Snow sweeper

Abstract

The utility model discloses a snow sweeper which comprises a snow collecting device, a snow sweeping device and a snow sweeping device. The snow throwing device comprises a snow throwing element used for throwing out the snow collected by the snow collecting device and a snow throwing barrel used for guiding the throwing direction of the snow; the main shell is used for supporting the snow collecting device and the snow throwing device; and the walking assembly drives the snow sweeper to walk on the ground. The snow collecting device further comprises a first motor used for driving the snow collecting element to rotate, and the snow throwing device further comprises a second motor used for driving the snow throwing element to rotate. The snow sweeper further comprises a power supply device used for providing power for the first motor and the second motor. When the snow collecting element works in a no-load mode, the working current of the first motor is smaller than or equal to 40A. The snow sweeper is high in working efficiency.

Description

Technical Field

[0001] This application relates to a gardening tool, specifically to a snow sweeper. Background Art

[0002] A snow sweeper in related technologies usually includes a snow collection device and a snow throwing device. During operation, the snow sweeper collects snow on the ground through the snow collection device and then throws the snow to a designated position through the snow throwing device. Usually, the rotational speeds of the snow collection device and the snow throwing device of the snow sweeper are not easy to adjust, which easily causes waste of energy and reduction of work efficiency. And there are some snow sweepers that can adjust the rotational speeds of the snow collection device and the snow throwing device, but when the rotational speed of the snow collection device needs to be adjusted, the rotational speed of the snow throwing device will also change accordingly. In this way, the snow sweeper cannot control the snow throwing distance and is more likely to have a situation of blocked rotation.

[0003] This part provides background information related to this application, and this background information is not necessarily prior art. Utility Model Content

[0004] An object of this application is to solve or at least alleviate part or all of the above problems. For this reason, an object of this application is to provide a snow sweeper with higher energy efficiency.

[0005] To achieve the above object, this application adopts the following technical solutions:

[0006] A snow sweeper, comprising: a snow collection device, including a snow collection element for collecting snow and a first motor for driving the snow collection element to rotate; a snow throwing device, including a snow throwing element for throwing the snow collected by the snow collection device, a snow throwing tube for guiding the throwing direction of the snow, and a second motor for driving the snow throwing element to rotate; a main housing for supporting the snow collection device and the snow throwing device; a traveling assembly for driving the snow sweeper to travel on the ground; a power supply device for supplying power to the first motor and the second motor; wherein, when the snow collection element operates without load, the operating current of the first motor is less than or equal to 40A.

[0007] In some embodiments, when the snow collection element operates without load, the operating current of the second motor is less than or equal to 40A.

[0008] In some embodiments, when the snow collection element operates without load, the sum of the operating currents of the first motor and the second motor is less than or equal to 80A.

[0009] In some embodiments, the power supply device includes a battery pack for supplying power to the first motor and / or the second motor, and the nominal voltage of the battery pack is greater than or equal to 24V.

[0010] In some embodiments, the nominal voltage of the battery pack is greater than or equal to 40V.

[0011] In some embodiments, the snow sweeper further includes: a control device configured to adjust the rotational speed of the first motor in response to a change in load.

[0012] In some embodiments, when the control device adjusts the rotational speed of the first motor in response to a change in load, the rotational speed of the second motor remains unchanged.

[0013] In some embodiments, when the control device adjusts the rotational speed of the first motor in response to a change in load, the rotational speed of the second motor remains at a rotational speed value corresponding to a set snow throwing distance.

[0014] In some embodiments, the snow collecting device further includes a first transmission assembly connecting the first motor and the snow collecting element.

[0015] In some embodiments, the snow throwing device further includes a second transmission assembly connecting the second motor and the snow throwing element.

[0016] A snow sweeper includes: a snow collecting device including a snow collecting element for collecting snow and a first motor for driving the snow collecting element to rotate; a snow throwing device including a snow throwing element for throwing the snow collected by the snow collecting device, a snow throwing tube for guiding the throwing direction of the snow, and a second motor for driving the snow throwing element to rotate; a main housing for supporting the snow collecting device and the snow throwing device; a traveling assembly for driving the snow sweeper to travel on the ground; a power supply device for supplying power to the first motor and the second motor; wherein, the snow collecting device further includes: a first transmission assembly disposed between the first motor and the snow collecting element to transmit power between the first motor and the snow collecting element; wherein, the rotational speed of the first motor is greater than or equal to 5000 rpm and less than or equal to 20000 rpm, and the reduction ratio of the first transmission assembly is greater than or equal to 40 and less than or equal to 200.

[0017] In some embodiments, the rotational speed of the second motor is greater than or equal to 5000 rpm and less than or equal to 14000 rpm.

[0018] In some embodiments, the snow throwing device further includes: a second transmission assembly disposed between the second motor and the snow throwing element to transmit power between the second motor and the snow throwing element, and the reduction ratio of the second transmission assembly is greater than or equal to 4 and less than or equal to 20.

[0019] In some embodiments, the first transmission assembly includes a first gear rotating about a first axis and a second gear meshing with the first gear and rotating about a second axis.

[0020] In some embodiments, the first axis and the second axis are parallel to each other.

[0021] In some embodiments, the second axis is inclined or perpendicular to the first axis.

[0022] In some embodiments, the diameter of the first motor is greater than or equal to 30 mm and less than or equal to 110 mm.

[0023] In some embodiments, the diameter of the second motor is greater than or equal to 60 mm and less than or equal to 135 mm.

[0024] In some embodiments, the reduction ratio of the first transmission assembly is greater than or equal to 80 and less than or equal to 120.

[0025] A snow sweeper, comprising: a snow collection device, including a snow collection element for collecting snow and a first motor for driving the snow collection element to rotate; a snow throwing device, including a snow throwing element for throwing the snow collected by the snow collection device, a snow throwing tube for guiding the throwing direction of the snow, and a second motor for driving the snow throwing element to rotate; a main housing for supporting the snow collection device and the snow throwing device; a walking assembly for driving the snow sweeper to walk on the ground; a power supply device for supplying power to the first motor and the second motor; wherein, the snow collection device further includes: a first transmission assembly disposed between the first motor and the snow collection element to transmit power between the first motor and the snow collection element; wherein, the reduction ratio of the first transmission assembly is greater than or equal to 60 and less than or equal to 180.

[0026] A snow sweeper, comprising: a snow collection device, including a snow collection element for collecting snow and a first motor for driving the snow collection element to rotate; a snow throwing device, including a snow throwing element for throwing the snow collected by the snow collection device, a snow throwing tube for guiding the throwing direction of the snow, and a second motor for driving the snow throwing element to rotate; a main housing for supporting the snow collection device and the snow throwing device; a walking assembly for driving the snow sweeper to walk on the ground; wherein, when the snow collection element is operating without load, the ratio of the no-load output power of the second motor to the no-load output power of the first motor is greater than or equal to 0.5 and less than or equal to 1.5, and the snow sweeper further includes a power supply device for supplying power to the first motor and the second motor.

[0027] In some embodiments, the no-load output power of the first motor is greater than or equal to 600 W and less than or equal to 2000 W.

[0028] In some embodiments, the no-load output power of the second motor is greater than or equal to 600 W and less than or equal to 2000 W.

[0029] In some embodiments, the sum of the no-load output power of the first motor and the no-load output power of the second motor is greater than or equal to 1200 W and less than or equal to 4000 W.

[0030] In some embodiments, the maximum load power of the second motor is greater than or equal to 4000 W.

[0031] In some embodiments, the snow sweeper further includes: a control device configured to adjust the ratio of the load output power of the second motor to the load output power of the first motor according to the load.

[0032] In some embodiments, the ratio of the load output power of the second motor to the load output power of the first motor is different from the ratio of the no-load output power of the second motor to the no-load output power of the first motor.

[0033] In some embodiments, the ratio of the load output power of the second motor to the load output power of the first motor is greater than the ratio of the no-load output power of the second motor to the no-load output power of the first motor.

[0034] In some embodiments, the diameter of the first motor is greater than or equal to 30 mm and less than or equal to 110 mm.

[0035] In some embodiments, the diameter of the second motor is greater than or equal to 60 mm and less than or equal to 135 mm.

[0036] A snow sweeper, comprising: a snow collection device including a snow collection element for snow collection and a first motor for driving the snow collection element to rotate; a main housing for supporting the snow collection device; a traveling assembly for driving the snow sweeper to travel on the ground; a power supply device for supplying power to the first motor; wherein the snow collection element rotates around a rotation axis, a coordinate system is established with a point on the rotation axis of the snow collection element as the origin, the front-back direction as the X-axis, and the up-down direction as the Y-axis, the forward direction is the positive direction of the X-axis, and the upward direction is the positive direction of the Y-axis. The projection of the first motor in the plane of the coordinate system is located within an angular region with the origin as the vertex and within the plane of the coordinate system. The first side of the angular region is located in the first quadrant of the coordinate system and the included angle between it and the positive direction of the Y-axis is less than or equal to 60 degrees, and the second side of the angular region is located in the second quadrant of the coordinate system and the included angle between it and the positive direction of the Y-axis is less than or equal to 80 degrees.

[0037] In some embodiments, the projection of the first motor in the plane of the coordinate system is located within a circular region with the origin as the center and within the plane of the coordinate system, and the radius of the circular region is less than or equal to 0.7 m.

[0038] In some embodiments, the first side of the angular region is located in the first quadrant of the coordinate system and the included angle between it and the positive direction of the Y-axis is less than or equal to 30 degrees, and the second side of the angular region is located in the second quadrant of the coordinate system and the included angle between it and the positive direction of the Y-axis is less than or equal to 60 degrees.

[0039] In some embodiments, the first motor is disposed on the upper side of the snow collection element.

[0040] In some embodiments, the first motor is disposed on the upper side of the rotation axis of the snow collection element.

[0041] In some embodiments, the main housing includes a snow collecting cover for mounting a snow collecting element. The snow collecting cover includes a top wall and two side walls respectively disposed on both sides of the top wall. The projection of the first motor in a plane perpendicular to the front-rear direction is located between the projections of the two side walls in a plane perpendicular to the front-rear direction.

[0042] In some embodiments, the main housing includes a snow collecting cover for mounting a snow collecting element. The snow collecting cover includes a top wall and two side walls respectively disposed on both sides of the top wall. The first motor is at least partially disposed above the top wall.

[0043] In some embodiments, the main housing further includes a first motor housing which forms a first receiving space for receiving the first motor, and the first motor housing is mounted above the top wall.

[0044] In some embodiments, the snow sweeper further includes a snow throwing device, which includes a snow throwing element for throwing the snow collected by the snow collecting device, a snow throwing tube for guiding the throwing direction of the snow, and a second motor for driving the snow throwing element to rotate. Wherein, in the front-rear direction, the first motor is disposed in front of the second motor.

[0045] A snow sweeper includes a snow collecting device including a snow collecting element for collecting snow and a first motor for driving the snow collecting element to rotate; a snow throwing device including a snow throwing element for throwing the snow collected by the snow collecting device, a snow throwing tube for guiding the throwing direction of the snow, and a second motor for driving the snow throwing element to rotate; a main housing for supporting the snow collecting device and the snow throwing device; a traveling assembly for driving the snow sweeper to travel on the ground; a power supply device for supplying power to the first motor and the second motor. Wherein, the main housing includes a snow collecting cover for mounting the snow collecting element. The snow collecting cover includes a top wall and two side walls respectively disposed on both sides of the top wall. The first motor is at least partially disposed above the top wall.

[0046] A snow sweeper includes a snow collecting device including a snow collecting element for collecting snow; a snow throwing device including a snow throwing element for throwing the snow collected by the snow collecting device; a main housing for supporting the snow collecting device and the snow throwing device; a traveling assembly for driving the snow sweeper to travel on the ground; a detection device including a first detection component for detecting the state of the snow and a second detection component for detecting the state of the snow; a control device configured to obtain the current state parameter of the snow according to the state parameter of the snow detected by the first detection component and / or the state parameter of the snow detected by the second detection component, and control the motion state of the snow sweeper according to the state parameter of the snow.

[0047] A snow sweeper, comprising: a snow collection device including a snow collection element for collecting snow and a first motor for driving the snow collection element to rotate; a snow throwing device including a snow throwing element for throwing the snow collected by the snow collection device, a snow throwing tube for guiding the throwing direction of the snow, and a second motor for driving the snow throwing element to rotate; a main housing for supporting the snow collection device and the snow throwing device; a traveling assembly for driving the snow sweeper to travel on the ground; a power supply device for supplying power to the first motor and the second motor; and a control device configured to control the rotation speed of the first motor at least according to the state of the snow and the traveling speed of the traveling assembly.

[0048] In some embodiments, when the state of the snow remains unchanged, the greater the traveling speed of the traveling assembly, the greater the rotation speed of the first motor.

[0049] In some embodiments, the state of the snow includes the thickness and / or density of the snow. When the traveling speed of the traveling assembly remains unchanged, the greater the thickness and / or density of the snow, the greater the rotation speed of the first motor.

[0050] In some embodiments, the state of the snow includes the thickness and / or density of the snow.

[0051] In some embodiments, the snow sweeper further includes: a memory storing a mapping relationship between the state of the snow, the traveling speed of the traveling assembly, and the rotation speed of the first motor; wherein, after obtaining the state of the snow and the traveling speed, the control device obtains the rotation speed of the first motor according to the mapping relationship.

[0052] In some embodiments, the mapping relationship includes: a relationship table, and / or a relationship function.

[0053] In some embodiments, when the control device controls the rotation speed of the first motor, the rotation speed of the second motor does not change with the change of the rotation speed of the first motor.

[0054] In some embodiments, when the control device controls the change of the rotation speed of the first motor, the control device controls the rotation speed of the second motor to remain unchanged.

[0055] In some embodiments, the snow sweeper further includes: a detection device for detecting the state of the snow.

[0056] A snow sweeper, comprising: a snow collection device including a snow collection element for collecting snow and a first motor for driving the snow collection element to rotate; a snow throwing device including a snow throwing element for throwing the snow collected by the snow collection device, a snow throwing tube for guiding the throwing direction of the snow, and a second motor for driving the snow throwing element to rotate; a main housing for supporting the snow collection device and the snow throwing device; a traveling assembly for driving the snow sweeper to travel on the ground; a power supply device for supplying power to the first motor and the second motor; and a control device configured to control the rotation speed of the first motor at least according to the traveling speed of the traveling assembly.

[0057] A snow sweeper, comprising: a snow collection device, including a snow collection element for collecting snow and a first motor for driving the snow collection element to rotate; a snow throwing device, including a snow throwing element for throwing the snow collected by the snow collection device, a snow throwing tube for guiding the throwing direction of the snow, and a second motor for driving the snow throwing element to rotate; a main housing for supporting the snow collection device and the snow throwing device; a traveling assembly for driving the snow sweeper to travel on the ground; a power supply device for supplying power to the first motor and the second motor; and a control device configured to control at least the traveling speed of the traveling assembly and the rotational speed of the first motor according to the state of the snow.

[0058] In some embodiments, the snow sweeper further comprises: a memory storing a mapping relationship between the state of the snow, the traveling speed of the traveling assembly, and the rotational speed of the first motor; wherein, after obtaining the state of the snow, the control device obtains the traveling speed of the traveling assembly and the rotational speed of the first motor according to the mapping relationship.

[0059] In some embodiments, the mapping relationship includes: a relationship table, and / or a relationship function.

[0060] In some embodiments, when the control device controls the rotational speed of the first motor, the rotational speed of the second motor does not change with the change of the rotational speed of the first motor.

[0061] In some embodiments, when the control device controls the change of the rotational speed of the first motor, the control device controls the rotational speed of the second motor to remain unchanged.

[0062] In some embodiments, the snow sweeper further comprises: a detection device for detecting the state of the snow.

[0063] In some embodiments, the control device is configured to adjust the rotational speed of the first motor according to the state of the snow, and then control the traveling speed of the traveling assembly according to the state of the snow and the rotational speed of the first motor.

[0064] In some embodiments, when the state parameter of the snow is greater than a first preset value, the rotational speed of the first motor remains constant at a first constant rotational speed value.

[0065] In some embodiments, when the state parameter of the snow is less than the first preset value, the rotational speed of the first motor is less than the first constant rotational speed value.

[0066] In some embodiments, when the state parameter of the snow is greater than the first preset value, the traveling speed of the traveling assembly gradually decreases as the state parameter of the snow increases.

[0067] In some embodiments, when the state parameter of the snow is less than the first preset value, the traveling speed of the traveling assembly is constant at a second constant rotational speed value.

[0068] A snow sweeper, comprising: a snow collection device including a snow collection element for collecting snow and a first motor for driving the snow collection element to rotate; a snow throwing device including a snow throwing element for throwing the snow collected by the snow collection device, a snow throwing tube for guiding the throwing direction of the snow, and a second motor for driving the snow throwing element to rotate; a main housing for supporting the snow collection device and the snow throwing device; a traveling assembly for driving the snow sweeper to travel on the ground; a power supply device for supplying power to the first motor and the second motor; a control device configured to control at least the traveling speed of the traveling assembly according to the state of the snow; wherein, when the state parameter of the snow is less than a preset value, the traveling speed of the traveling assembly remains constant at a constant rotation speed value, and when the state parameter of the snow is greater than the preset value, the traveling speed of the traveling assembly is less than the constant rotation speed value.

[0069] A snow sweeper, comprising: a snow collection device including a snow collection element for collecting snow and a first motor for driving the snow collection element to rotate; a snow throwing device including a snow throwing element for throwing the snow collected by the snow collection device, a snow throwing tube for guiding the throwing direction of the snow, and a second motor for driving the snow throwing element to rotate; a main housing for supporting the snow collection device and the snow throwing device; a traveling assembly for driving the snow sweeper to travel on the ground, further including a traveling motor; a mode setting member for a user to operate to set the working mode of the snow sweeper; a control device connected to the mode setting member; wherein, the mode setting member can at least enable the snow sweeper to enter a first working mode and a second working mode. When the snow sweeper is in the first working mode, the control device controls the traveling motor to operate at a first preset rotation speed and controls the first motor to operate at a second preset rotation speed. When the snow sweeper is in the second working mode, the control device controls the traveling motor to operate at a third preset rotation speed and controls the first motor to operate at a fourth preset rotation speed; wherein, the third preset rotation speed is different from the first preset rotation speed, or the fourth preset rotation speed is different from the second preset rotation speed.

[0070] In some embodiments, the third preset rotation speed is different from the first preset rotation speed, and the fourth preset rotation speed is different from the second preset rotation speed.

[0071] In some embodiments, the mode setting member is further configured to enable the snow sweeper to enter a third working mode. When the snow sweeper is in the third working mode, the control device controls the traveling motor to operate at a fifth preset rotation speed and controls the first motor to operate at a sixth preset rotation speed.

[0072] In some embodiments, when the control device controls the rotation speed of the first motor, the rotation speed of the second motor does not change with the change of the rotation speed of the first motor.

[0073] In some embodiments, when the control device controls the change of the rotation speed of the first motor, the control device controls the rotation speed of the second motor to remain unchanged.

[0074] In some embodiments, a first mark corresponding to the first working mode is further provided on the main housing.

[0075] In some embodiments, the first marker is set for a user to observe whether the thickness of the snow reaches the first marker position to switch the operation mode setting member to the first working mode.

[0076] In some embodiments, the main housing further includes a snow collecting cover, and the first marker is set at a position on the snow collecting cover at a first height from the ground.

[0077] In some embodiments, a second marker corresponding to the second working mode is further set on the snow collecting cover.

[0078] The advantages of the present application are as follows: the snow sweeper has higher working efficiency and lower energy loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0079] Figure 1 is a perspective view of a snow sweeper according to an embodiment of the present application;

[0080] Figure 2 is Figure 1 the plan view of the snow sweeper in

[0081] Figure 3 is Figure 1 the front view of the snow sweeper in

[0082] Figure 4 is Figure 1 the perspective view of the snow sweeper when the main housing is removed in

[0083] Figure 5 is Figure 4 the top view of the structure shown in

[0084] Figure 6 is Figure 1 the plan view of the traveling assembly, the snow collecting device and the snow throwing device of the snow sweeper in

[0085] Figure 7 is Figure 6 the perspective view of the structure shown in

[0086] Figure 8 is Figure 1 the perspective view of the snow collecting device, the snow throwing device and a part of the main housing of the snow sweeper in

[0087] Figure 9 is Figure 8 the perspective view of the structure shown in another view in

[0088] Figure 10 is Figure 8 the plan view of the structure shown in

[0089] Figure 11 is Figure 1Schematic diagram of the connection of some modules of the snow sweeper in

[0090] Figure 12 is Figure 1 Graph of the change in the bus currents of the first motor and the second motor of the snow sweeper in

[0091] Figures 13A to 13B is Figure 1 Example table of the rotational speeds of the respective rotating elements of the snow sweeper in under different snow depths in

[0092] Figure 14 in Figure 1 A control flowchart of the snow sweeper in

[0093] Figure 15 is Figure 1 Another example table of the rotational speeds of the respective rotating elements of the snow sweeper in under different snow depths in

[0094] Figures 16A to 16C is Figure 1 Graph showing the relationship between the operating conditions of the snow sweeper in and the snow depth, traveling speed, snow removal volume, and snow collection volume of the snow collection element in

[0095] Figure 17 is Figure 1 Another control flowchart of the snow sweeper in

[0096] Figure 18 is Figure 1 Plan view of the snow sweeper in when the detection element rotates through a certain angle in

[0097] Figure 19 Plan view of the snow sweeper of another embodiment of the present application in

[0098] Figure 20 Plan view of the snow sweeper of another embodiment of the present application in

[0099] Figure 21 is Figure 20 Schematic diagram of the connection of some modules of the snow sweeper in

[0100] Figure 22 is Figure 20 An example table showing the relationship between the operating conditions of the snow sweeper in and the snow depth, traveling speed, etc. in Detailed implementation manners

[0101] Before explaining in detail any embodiment of the present application, it should be understood that the present application is not limited to the structural details and component arrangements set forth in the following description or shown in the above drawings.

[0102] In this application, the terms "comprise", "include", "have" or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article or apparatus comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or apparatus. Without further limitation, an element defined by the phrase "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising the element.

[0103] In this application, the term "and / or" describes the associative relationship between associated objects and indicates that three relationships may exist. For example, A and / or B may represent three cases: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, in this application, the character " / " generally indicates that the associated objects before and after are in an "and / or" relationship.

[0104] In this application, the terms "connect", "combine", "couple", "mount" may be direct connection, combination, coupling or mounting, or may be indirect connection, combination, coupling or mounting. For example, direct connection means that two parts or components are connected together without the need for an intermediate member, and indirect connection means that two parts or components are respectively connected to at least one intermediate member, and these two parts or components are connected through the intermediate member. In addition, "connect" and "couple" are not limited to physical or mechanical connection or coupling and may include electrical connection or coupling.

[0105] In this application, those of ordinary skill in the art will understand that relative terms used in connection with a quantity or condition (such as "about", "approximately", "substantially", etc.) are intended to include the stated value and have the meaning indicated by the context. For example, such relative terms include at least the degree of error associated with the measurement of a particular value, tolerances due to manufacturing, assembly, use, etc. associated with a particular value. Such terms should also be considered to disclose a range defined by the absolute values of two endpoints. Relative terms may refer to plus or minus a certain percentage (such as 1%, 5%, 10% or more) of the indicated value. A numerical value without a relative term should also be disclosed as a particular value having a tolerance. In addition, when expressing a relative angular positional relationship (such as substantially parallel, substantially perpendicular), "substantially" may refer to plus or minus a certain number of degrees (such as 1 degree, 5 degrees, 10 degrees or more) from the indicated angle.

[0106] In this application, those of ordinary skill in the art will understand that the functions performed by a component may be performed by one component, multiple components, one part, or multiple parts. Similarly, the functions performed by a part may also be performed by one part, one component, or a combination of multiple parts.

[0107] In this application, the directional terms such as "upper", "lower", "left", "right", "front", and "rear" are described based on the orientation and positional relationship shown in the drawings, and should not be construed as limiting the embodiments of this application. In addition, in the context, it should also be understood that when it is mentioned that one component is connected "above" or "below" another component, it can not only be directly connected "above" or "below" another component, but also be indirectly connected "above" or "below" another component through an intermediate component. It should also be understood that the directional terms such as the upper side, the lower side, the left side, the right side, the front side, and the rear side not only represent the positive direction, but can also be understood as the side direction. For example, the lower side can include directly below, lower left, lower right, lower front, and lower rear, etc.

[0108] In this application, the terms "controller", "processor", "central processor", "CPU", and "MCU" can be used interchangeably. When using the units "controller", "processor", "central processor", "CPU", or "MCU" to perform specific functions, unless otherwise specified, these functions can be performed by a single one of the above units or multiple ones of the above units.

[0109] In this application, the terms "device", "module", or "unit" can be implemented in the form of hardware or software in order to achieve specific functions.

[0110] In this application, the terms "calculate", "judge", "control", "determine", "identify", etc. refer to the operations and processes of a computer system or a similar electronic computing device (such as a controller, a processor, etc.).

[0111] As Figure 1 shown in an embodiment, the snow sweeper 100 is used for a user to clean the snow on the road surface, or in the courtyard, or in the garden, etc. In this embodiment, the snow sweeper 100 is taken as an example of a rear-walking snow sweeper 100. When working, the user holds the rear-walking snow sweeper 100 and pushes the rear-walking snow sweeper 100 to walk on the ground behind the rear-walking snow sweeper 100, or follows the rear-walking snow sweeper 100 to walk on the ground. In some embodiments, the snow sweeper 100 can also be an intelligent snow sweeper 100, and the intelligent snow sweeper 100 can move on the ground automatically without the user following. Or, in some embodiments, the snow sweeper 100 can also be a manned snow sweeper 100, and the user can be supported by the manned snow sweeper 100 and walk together with the manned snow sweeper 100. It can be understood that the specific structural form of the snow sweeper 100 is not limited by the relationship with the user, as long as the snow sweeper 100 includes at least part of the solutions described below in this application, it falls within the scope protected by this application.

[0112] For the convenience of explaining the technical solutions of the application, the following are also defined as Figure 1Up, down, front, back, left, and right as indicated by the arrows. Of course, the directions in this embodiment are not limited thereto.

[0113] As Figure 1 shown, the snow sweeper 100 includes: a main body 10 and a handle device 20. The handle device 20 is connected to the rear end of the main body 10 for a user to hold and operate. The main body 10 includes: a main housing 11, a traveling assembly 12, a snow collection device 13, and a snow throwing device 14. The main housing 11 serves as the main frame of the snow sweeper 100 and is used to support the snow collection device 13 and the snow throwing device 14. The traveling assembly 12 is used to support the main housing 11 to drive the snow sweeper 100 to travel on the ground. The snow collection device 13 is used to agitate the snow on the ground and collect the snow into the main housing 11. The snow throwing device 14 is used to throw the snow collected by the snow collection device 13 to a preset position outside the snow sweeper 100. In this way, the snow sweeper 100 can clean the snow on the ground, throw the snow to places where pedestrians do not often go, or clean the snow together.

[0114] As Figures 1 to 3 described, the handle device 20 is connected to the rear end of the main housing 11. When the user is pushing or following the snow sweeper 100 to walk, the user stands behind the snow sweeper 100 and holds the handle device 20 with the hand. The handle device 20 includes: a connecting rod, an operation assembly 22, and a holding handle 23, etc. The connecting rod connects the operation assembly 22 and the main body 10. The holding handle 23 is provided at the end of the connecting rod away from the main body 10. The holding handle 23 includes a left handle and a right handle, and the left handle and the right handle are respectively held by the user's two hands. The operation assembly 22 includes: an operation console and a plurality of operation parts. The operation console connects two connecting rods, and a plurality of operation switches are installed on the operation console. The operation parts are for the user to operate to control the snow sweeper 100, such as controlling the traveling assembly 12, the snow collection device 13, and the snow throwing device 14, etc. A plurality of operation switches are also provided in the operation console, and the plurality of operation switches are electrically connected to the plurality of operation parts. The handle device 20 further includes: a connecting cable, and the connecting cable is used to electrically connect the plurality of operation switches to the main body 10. In some embodiments, the operation assembly 22 may also include a remote controller for controlling the main body 10. The remote controller can be detachably arranged from the main body 10. The remote controller can be detached from the snow sweeper 100 or is relatively independently arranged with respect to the snow sweeper 100 for the user to control the snow sweeper 100.

[0115] The main housing 11 is connected to one end of the connecting rod away from the operating assembly 22. The main housing 11 further includes a snow collecting cover 111 and a snow throwing housing 114. The snow collecting cover 111 is used to install at least part of the snow collecting device 13, and the snow throwing housing 114 is used to install at least part of the snow throwing device 14. In this embodiment, the main machine 10 further includes a power supply device 15 for providing an energy source for the snow sweeper 100. The power supply device 15 is installed on the main housing 11 and is used to supply power to the traveling assembly 12, the snow collecting device 13, and the snow throwing device 14. In this embodiment, the power supply device 15 includes a battery pack 151 for energy storage, and the battery pack 151 is detachably installed on the main housing 11. In this embodiment, the number of the battery packs 151 is 2. In this way, the power supply device 15 can provide enough electric energy to extend the battery life of the snow sweeper 100. The main housing 11 further includes a battery compartment 113 for accommodating the power supply device 15, and the battery pack 151 is detachably installed in the battery compartment 113. It can be understood that in other embodiments, the power supply device 15 can also be a power supply cable, and the power supply cable can be connected to the AC mains or other energy storage devices.

[0116] Such as Figures 4 to 7As shown in the figure, the traveling assembly 12 includes traveling wheels 121 for driving the snow sweeper 100 to travel on the ground, and also includes a traveling motor 122 for driving the traveling wheels 121 to rotate. Among them, the traveling motor 122 drives the traveling wheels 121 to rotate around the traveling axis 101. The traveling wheels 121 include a left traveling wheel and a right traveling wheel. The left traveling wheel and the right traveling wheel are respectively arranged on both sides of the main housing 11 and support the main housing 11. The power supply device 15 can supply power to the traveling motor 122. In the left-right direction, the power supply device 15 is arranged between the left traveling wheel and the right traveling wheel. In the up-down direction, the power supply device 15 is at least partially arranged above the left traveling wheel and the right traveling wheel. The traveling motor 122 is arranged below the power supply device 15, and the traveling motor 122 is connected to the left traveling wheel and the right traveling wheel through a reduction assembly. In this embodiment, the number of traveling motors 122 is 1, and the reduction assembly may include a clutch, so that there can be a speed difference between the left traveling wheel and the right traveling wheel, thereby realizing the steering action of the snow sweeper 100. It can be understood that in some embodiments, the traveling assembly 12 may include two traveling motors 122, and the two traveling motors 122 respectively drive the left traveling wheel and the right traveling wheel, so that there can be a speed difference between the left traveling wheel and the right traveling wheel, thereby realizing the steering action of the snow sweeper 100. In this embodiment, the traveling motor 122 is an outer rotor motor, and the outer rotor motor is located outside the traveling wheel 121 and drives the traveling wheel 121 through a reduction assembly. It can be understood that in some embodiments, the traveling motor 122 may also be a hub motor, and the hub motor is at least partially arranged inside the traveling wheel 121 to drive the traveling wheel 121 to rotate. In some embodiments, the traveling motor 122 may also be a wheel side motor, and the wheel side motor is arranged close to the traveling wheel 121 to drive the traveling wheel 121 to rotate.

[0117] The snow collecting device 13 includes: a snow collecting element 131 and a first motor 132 for driving the snow collecting element 131 to rotate. The snow collecting element 131 is a auger that can rotate around the first rotation axis 102. The snow collecting element 131 is mounted on the snow collecting shaft 133, and the snow collecting shaft 133 is rotatably mounted on the snow collecting cover 111. The snow collecting shaft 133 takes the first rotation axis as the central axis. The snow collecting element 131 may include two augers, and both augers are mounted on the snow collecting shaft 133. The snow collecting element 131 is at least partially arranged inside the snow collecting cover 111, and the snow collecting cover 111 includes an opening 112 that opens forward. When the snow collecting element 131 rotates around the first rotation axis 102, the auger agitates the snow on the ground, so that the snow on the ground enters the snow collecting cover 111 through the opening 112. The two augers can also gather the snow towards the middle of the opening 112 to improve the snow collecting efficiency.

[0118] The first motor 132 is used to drive the snow collection element 131 to rotate about the first rotation axis 102. The first motor 132 is at a certain distance from the snow collection element 131, and then the power output by the first motor 132 is transmitted to the snow collection element 131 through the first transmission assembly 134, thereby driving the snow collection element 131 to rotate.

[0119] The snow throwing device 14 includes: a snow throwing element 141 and a second motor 142 for driving the snow throwing element 141 to rotate. The snow throwing element 141 is an impeller mounted on the snow throwing shaft. The impeller is arranged at the rear side of the snow collection element 131. The snow collection element 131 can guide the snow to move towards the impeller. The snow throwing device 14 further includes a snow throwing tube 143 for guiding the throwing direction of the snow. The snow throwing tube 143 is arranged at a position in the circumferential direction of the impeller. When the impeller rotates at a high speed, the snow will be stirred by the impeller and rotate in the circumferential direction to the position of the snow throwing tube 143 and move along the snow throwing tube 143 to the outside of the snow sweeper 100, so as to be thrown to a preset position.

[0120] In this embodiment, the first motor 132 and the second motor 142 are independently arranged, that is, the snow collecting element 131 is driven to rotate by the first motor 132, and the snow throwing element 141 is driven to rotate by the second motor 142. In this way, the rotation of the snow collecting element 131 and the snow throwing element 141 can be independently controlled. In this way, compared with the prior art scheme in which one motor drives both the snow collecting element 131 and the snow throwing element 141, the technical scheme of the present application makes the snow collecting efficiency higher and the energy consumption lower. In the prior art, because one motor is connected to both the snow collecting element 131 and the snow throwing element 141, when the rotation speed of the snow collecting element 131 changes, the rotation speed of the snow throwing element 141 will also change. For example, when the rotation speed of the snow collecting element 131 increases, the rotation speed of the snow throwing element 141 will also increase, and when the rotation speed of the snow collecting element 131 decreases, the rotation speed of the snow throwing element 141 will also decrease. In this way, the rotation speed matching relationship between the snow throwing element 141 and the snow collecting element 131 cannot reach the most efficient state, or there will be more energy losses, or when the rotation speed of the snow collecting element 131 is reduced, the reduction of the rotation speed of the snow throwing element 141 will affect the reduction of the snow throwing distance. In the present application, the snow sweeper 100 includes two motors that respectively drive the snow collecting element 131 and the snow throwing element 141. Specifically, the first motor 132 drives the snow collecting element 131, and the second motor 142 drives the snow throwing element 141. In this way, in different states, the rotation speeds of the snow collecting element 131 and the snow throwing element 141 can be independently adjusted. For example, when it is necessary to increase the rotation speed of the snow collecting element 131, the rotation speed of the first motor 132 that drives the snow collecting element 131 can be independently controlled to increase, while keeping the rotation speed of the second motor 142 that drives the snow throwing element 141 unchanged, so as to effectively improve the snow sweeping ability without affecting the snow throwing distance. Or, when it is necessary to reduce the rotation speed of the snow collecting element 131, the rotation speed of the first motor 132 that drives the snow collecting element 131 can be independently controlled to decrease, while keeping the rotation speed of the second motor 142 that drives the snow throwing element 141 unchanged, so as to reduce the energy loss of the snow sweeper 100 without affecting the snow throwing distance.

[0121] In this embodiment, the power supply device 15 also supplies power to the first motor 132 and the second motor 142. After the battery pack 151 is installed in the battery compartment 113, it can supply power to the first motor 132 and the second motor 142. Among them, the nominal voltage of the battery pack 151 is greater than or equal to 24V, so that the power supply device 15 can load motors with greater power and improve the load capacity of the snow sweeper 100.

[0122] In some embodiments, the nominal voltage of the battery pack 151 is greater than or equal to 24V. In some embodiments, the nominal voltage of the battery pack 151 is greater than or equal to 40V. In some embodiments, the nominal voltage of the battery pack 151 is greater than or equal to 80V. In some embodiments, the nominal voltage of the battery pack 151 can be, for example, 24V, 36V, 40V, 56V, 80V, etc.

[0123] It can be understood that, in some embodiments, the nominal voltage of the battery pack can also be 4V to 24V, and then multiple battery packs are connected in series to obtain a power supply device with a higher output voltage.

[0124] In some embodiments, the battery pack 151 can also be fixedly connected to the main housing 11, and the battery pack 151 can be an in-built battery pack 151 disposed within the main housing 11.

[0125] In some embodiments, the battery pack 151 is detachably connected to the main housing 11, and the battery pack 151 is platformized and can supply power to hand-held power tools, ride-on power tools, all-terrain vehicles, etc.

[0126] In some embodiments, the battery pack 151 can be a lithium battery pack 151, or can also be a lithium iron phosphate battery pack 151.

[0127] When the snow collecting element 131 operates without load, the working current of the first motor 132 is less than or equal to 40A. In this way, the maximum working current in the current loop flowing through the first motor 132 can be greatly reduced, and the maximum current that the electronic components in the current loop of the first motor 132 need to bear can be made smaller. Thus, when selecting the electronic components in the current loop of the first motor 132, electronic components with a smaller maximum load current can be selected, which can reduce the cost of the electronic components and the cost of the snow sweeper 100. Or, compared with the prior art, when selecting electronic components with substantially the same maximum load current as the electronic components in the existing snow sweeper 100, the working current of these electronic components in this embodiment can be made less than their maximum load current that they can bear, thereby improving the service life of the electronic components. On the other hand, when the working current of the first motor 132 decreases, the energy output of the power supply device 15 can also be reduced, thereby extending the battery life of the power supply device 15. On the other hand, when the working current of the first motor 132 decreases, the heat generation of the electronic components in the current loop of the first motor 132 can also be reduced, thereby reducing the energy loss.

[0128] In this embodiment, when the snow collecting element 131 is operating without load, the operating current of the first motor 132 is relatively small. In fact, when the snow collecting element 131 is operating with load, the operating current of the first motor 132 also decreases. In this way, the working efficiency of the snow sweeper 100 under load conditions can be improved, the endurance time of the snow sweeper 100 can be extended, the energy loss during the operation of the snow sweeper 100 can be reduced, and the utilization rate of electric energy can be improved.

[0129] In some embodiments, when the snow collecting element 131 is operating without load, the operating current of the first motor 132 is also less than or equal to 30 A. In this way, the energy utilization rate of the electric snow sweeper 100 can be further improved. In some embodiments, the operating current of the first motor 132 is also less than or equal to 20 A. In some embodiments, the operating current of the first motor 132 is also less than or equal to 15 A.

[0130] In some embodiments, when the snow collecting element 131 is operating without load, the operating current of the second motor 142 is less than or equal to 40 A. In this way, the maximum operating current in the current loop flowing through the second motor 142 can be reduced, and the maximum current that the electronic components in the current loop of the second motor 142 need to bear can be reduced. Thus, when selecting the electronic components in the current loop of the second motor 142, electronic components with a smaller maximum load current can be selected, which can reduce the cost of the electronic components and the cost of the snow sweeper 100. Or, compared with the prior art, in the case of selecting electronic components with substantially the same maximum load current as the electronic components in the existing snow sweeper 100, the operating current of these electronic components in this embodiment can be made less than their maximum load current that they can bear, thereby improving the service life of the electronic components. On the other hand, when the operating current of the second motor 142 decreases, the energy output of the power supply device 15 can also be reduced, thereby extending the endurance time of the power supply device 15. On the other hand, when the operating current of the second motor 142 decreases, the heat generation of the electronic components in the current loop of the second motor 142 can also be reduced, thereby reducing energy loss. In some embodiments, the operating current of the second motor 142 is less than or equal to 30 A. In some embodiments, the operating current of the second motor 142 is also less than or equal to 20 A. In some embodiments, the operating current of the second motor 142 is also less than or equal to 15 A.

[0131] In this embodiment, when the snow collecting element 131 is operating without load, the operating current of the second motor 142 is relatively small. In fact, when the snow collecting element 131 is operating with load, the operating current of the second motor 142 also decreases. In this way, the working efficiency of the snow sweeper 100 under load conditions can be improved, the endurance time of the snow sweeper 100 can be extended, the energy loss during the operation of the snow sweeper 100 can be reduced, and the utilization rate of electric energy can be improved.

[0132] In some embodiments, when the snow collecting element 131 operates without load, the operating current of the second motor 142 is also less than or equal to 40 A. In this way, the energy utilization rate of the electric snow sweeper 100 can be further improved.

[0133] In some embodiments, when the snow collecting element 131 operates without load, the sum of the operating currents of the first motor 132 and the second motor 142 is less than or equal to 80 A. In this way, the current flowing through the common bus of the first motor 132 and the second motor 142 is small, so that the electronic components on the bus can select components with a smaller maximum load current, which can reduce the cost of the electronic components. Or, when the electronic components on the bus are selected to have substantially the same maximum load current as the electronic components in the existing snow sweeper 100, the operating currents of these electronic components in this embodiment can be made less than the maximum load current they can withstand, thereby improving the service life of the electronic components. On the other hand, when the sum of the operating currents of the first motor 132 and the second motor 142 decreases, the energy output of the power supply device 15 can also be reduced, thereby extending the battery life of the power supply device 15. On the other hand, when the sum of the operating currents of the first motor 132 and the second motor 142 decreases, the heat generated by the electronic components on the bus can also be reduced, thereby reducing energy loss.

[0134] In some embodiments, when the snow collecting element 131 operates without load, the sum of the operating currents of the first motor 132 and the second motor 142 is less than or equal to 50 A. In some embodiments, when the snow collecting element 131 operates without load, the sum of the operating currents of the first motor 132 and the second motor 142 is less than or equal to 35 A.

[0135] In this embodiment, when the snow collecting element 131 operates without load, the sum of the operating currents of the first motor 132 and the second motor 142 is small. In fact, when the snow collecting element 131 operates with load, the sum of the operating currents of the first motor 132 and the second motor 142 will also decrease. In this way, the working efficiency of the snow sweeper 100 under load conditions can be improved, the battery life of the snow sweeper 100 can be extended, the energy loss during the operation of the snow sweeper 100 can be reduced, and the utilization rate of electric energy can be improved.

[0136] Such as Figure 4 and Figure 11As shown, the snow sweeper 100 further includes a control device 30 for controlling the first motor 132 and the second motor 142. In this embodiment, the control device 30 can control the electrical parameters of the first motor 132 to change, and can also control the electrical parameters of the first motor 132 to change independently of the second motor 142. Similarly, the control device 30 can control the electrical parameters of the second motor 142 to change, and can also control the electrical parameters of the second motor 142 to change independently of the first motor 132. In this way, when the electrical parameters of the first motor 132 change, the electrical parameters of the second motor 142 may not change with the change of the first motor 132. Similarly, when the electrical parameters of the second motor 142 change, the electrical parameters of the first motor 132 may also not change with the change of the second motor 142.

[0137] In this embodiment, the control device 30 is further configured to adjust the rotational speed of the first motor 132 in response to a change in the load. For example, the control device 30 can adjust the rotational speed of the first motor 132 according to the change in the thickness of the snow to be cleared by the snow sweeper 100, so that the rotational speed of the snow collection element 131 changes with the change in the thickness of the snow. In this way, the snow collection element 131 can collect snow more efficiently according to the thickness of the snow, so that the snow sweeper 100 can automatically adapt to the change in the thickness of the snow to be cleared by the snow sweeper 100, thereby improving the cleaning efficiency of the snow sweeper 100.

[0138] Among them, the information about the load received by the control device 30 can be the thickness of the snow. In other embodiments, the information about the load can also be the density of the snow. In this way, the control device 30 can identify whether the snow is loose snow, wet snow, or snow with ice according to the density of the snow, and better control the rotational speed of the first motor 132.

[0139] In this embodiment, the snow throwing element 141 is driven by the second motor 142 instead of sharing a motor with the snow collecting element 131. Thus, in this embodiment, when the control device 30 adjusts the rotational speed of the first motor 132 in response to a change in load, the rotational speed of the second motor 142 can be kept unchanged. In this way, when the snow sweeper 100 faces snow of different thicknesses, it can automatically adjust the rotational speed of the snow collecting element 131, so that while the snow collecting element 131 efficiently gathers snow, it does not affect the snow throwing distance of the snow sweeper 100. That is to say, when the thickness of the snow is different, although the rotational speed of the snow collecting element 131 of the snow sweeper 100 changes, the rotational speed of the snow throwing element 141 can remain unchanged, so that the distance of the snow thrown by the snow throwing element 141 does not change. In the prior art, if the rotational speed of the snow collecting element 131 is increased because the thickness of the snow increases, the rotational speed of the snow throwing element 141 will also increase, resulting in an increase in the snow throwing distance, so that the snow cannot be thrown to the preset position as expected. Or, if the rotational speed of the snow collecting element 131 is decreased because the thickness of the snow decreases, the rotational speed of the snow throwing element 141 will also decrease, resulting in a decrease in the snow throwing distance, so that the snow cannot be thrown to the preset position as expected.

[0140] In this embodiment, the control device 30 is further configured to keep the rotational speed of the second motor 142 at a rotational speed value corresponding to the set snow throwing distance when adjusting the rotational speed of the first motor 132 in response to a change in load. Specifically, the operating device may include a first operating member 221. The first operating member 221 is for a user to operate to adjust and set the snow throwing distance of the snow sweeper 100. The control device 30 controls the rotational speed of the second motor 142 to be kept at a rotational speed value corresponding to the set snow throwing distance according to the set snow throwing distance. More specifically, the first operating member 221 is operated by the user to adjust the rotational speed of the second motor 142, thereby adjusting the snow throwing distance. In this way, even when the rotational speed of the first motor 132 changes according to the load, the rotational speed of the second motor 142 will be kept at a rotational speed value corresponding to the set snow throwing distance, so that the rotational speed of the snow throwing element 141 remains constant, and further the snow throwing distance of the snow sweeper 100 remains unchanged.

[0141] Such as Figures 3 to 7As shown, the snow collecting device 13 includes a first transmission assembly 134. The first transmission assembly 134 is connected to the first motor 132 and the snow collecting element 131, and is used to transmit power between the first motor 132 and the snow collecting element 131. The first transmission assembly 134 can reduce the high rotational speed output by the first motor 132 and transmit it to the snow collecting element 131 to drive the snow collecting element 131 to rotate at a low speed. In this embodiment, the rotational speed of the first motor 132 is greater than or equal to 5000 rpm and less than or equal to 20000 rpm. In this way, the first motor 132 can output a relatively high rotational speed, improving the working efficiency of the snow sweeper 100. The first transmission assembly 134 is used to achieve a speed reduction function between the first motor 132 and the snow collecting element 131. Specifically, the reduction ratio of the first transmission assembly 134 is greater than or equal to 40 and less than or equal to 200. In this way, the snow collecting element 131 can have a greater output torque, be able to drive thicker and heavier snow, and improve the load-carrying capacity of the snow sweeper 100. On the other hand, the rotational speed of the first motor 132 being greater than or equal to 5000 rpm and less than or equal to 20000 rpm also makes the first motor 132 lighter in weight, smaller in size, and lower in cost, thereby reducing the overall weight of the snow sweeper 100, making the overall arrangement more compact, and reducing the cost. In some embodiments, the reduction ratio of the first transmission assembly 134 is greater than or equal to 80 and less than or equal to 120. In some embodiments, the reduction ratio of the first transmission assembly 134 is greater than or equal to 60 and less than or equal to 180.

[0142] In some embodiments, the rotational speed of the first motor 132 is greater than or equal to 10000 rpm and less than or equal to 14000 rpm, and the reduction ratio of the first transmission assembly 134 is greater than or equal to 80 and less than or equal to 120. In this way, the rotational speed of the first motor 132, the reduction ratio of the first transmission assembly 134, and the relationship between the rotational speed of the first motor 132 and the reduction ratio of the first transmission assembly 134 can be optimized, enabling the snow collecting device 13 to operate at a relatively high efficiency.

[0143] The rotational speed of the second motor 142 is greater than or equal to 5000 rpm and less than or equal to 14000 rpm. In this way, the second motor 142 can be lighter in weight, smaller in size, and lower in cost, thereby reducing the overall weight of the snow sweeper 100, making the overall arrangement more compact, and reducing the cost.

[0144] As Figures 3 to 7As shown, the snow throwing device 14 includes a second transmission assembly 144. The second transmission assembly 144 connects the second motor 142 and the snow throwing element 141, and is used to transmit power between the second motor 142 and the snow throwing element 141. The second transmission assembly 144 can reduce the high rotational speed output by the second motor 142 and transmit it to the snow throwing element 141 to drive the snow throwing element 141 to rotate at a low speed. The second transmission assembly 144 is used to achieve a speed reduction function between the second motor 142 and the snow throwing element 141, so that the rotational speed of the second motor 142 can be higher. The second motor 142 outputs a relatively high rotational speed, which can improve the working efficiency of the snow sweeper 100. The reduction ratio of the second transmission assembly 144 is greater than or equal to 4 and less than or equal to 20. In this way, the snow throwing element 141 can have a greater output torque, be able to drive thicker and heavier snow, and improve the load-carrying capacity of the snow sweeper 100. On the other hand, the rotational speed of the second motor 142 is greater than or equal to 5000 rpm and less than or equal to 14000 rpm, which also makes the second motor 142 lighter in weight, smaller in volume, and lower in cost, so that the overall weight of the snow sweeper 100 can be reduced, the overall arrangement of the machine can be more compact, and the cost can be lower.

[0145] It can be understood that in other embodiments, the second transmission assembly 144 may not be provided between the second motor 142 and the snow throwing element 141. Instead, the snow throwing element 141 is directly mounted on the second motor 142, and the second motor 142 directly drives the snow throwing element 141 to rotate.

[0146] Specifically, the first transmission assembly 134 is a gear transmission assembly. The gear transmission assembly refers to a gear set that meshes with each other. For example, the gear transmission assembly can be a planetary gear assembly, can also be a worm and worm gear assembly, or can also be a bevel gear assembly. The mutually meshing gear set can include a first gear 134a and a second gear 134b that meshes with the first gear 134a. The first gear 134a can rotate about a first axis 103, and the second gear 134b rotates about a second axis 104. In this embodiment, the first gear 134a and the second gear 134b are perpendicular to each other or intersect obliquely. The gear set can also include a third gear 134c that meshes with the second gear 134b. The third gear 134c rotates about a third axis 105, and the third axis 105 is parallel to the second axis 104. It can be understood that in other embodiments, the first axis 103 can also be parallel to the second axis 104.

[0147] The second transmission component 144 can also be a gear transmission component, which refers to a component including a gear set that meshes with each other. For example, the gear transmission component can be a planetary gear component, can also be a worm and worm gear component, and can also be a bevel gear component. The second transmission component 144 can also include a plurality of gears that mesh with each other, and the rotation axes of some of the plurality of gears can be parallel to each other.

[0148] It can be understood that in other embodiments, the first transmission component 134 can also be a belt transmission component, and the second transmission component 144 can also be a belt transmission component.

[0149] In this embodiment, the first motor 132 can be an outer rotor motor. The diameter of the first motor 132 is greater than or equal to 30 mm and less than or equal to 110 mm. In this way, the size of the first motor 132 is small, so that the first motor 132 can be arranged at a suitable position in the main housing 11 without occupying too much space. The stator stack length of the first motor 132 is greater than or equal to 10 mm and less than or equal to 50 mm, and the weight of the first motor 132 is greater than or equal to 0.4 kg and less than or equal to 2.5 kg. In some embodiments, the diameter of the first motor 132 is greater than or equal to 35 mm and less than or equal to 95 mm.

[0150] The second motor 142 can be an outer rotor motor. The diameter of the second motor 142 is greater than or equal to 60 mm and less than or equal to 135 mm. In this way, the size of the second motor 142 is small, so that the second motor 142 can be arranged at a suitable position in the main housing 11 without occupying too much space. The stator stack length of the second motor 142 is greater than or equal to 10 mm and less than or equal to 60 mm, and the weight of the second motor 142 is greater than or equal to 1 kg and less than or equal to 6 kg. In some embodiments, the diameter of the second motor 142 is greater than or equal to 85 mm and less than or equal to 135 mm.

[0151] When the snow collecting element 131 operates without load, the ratio of the no-load output power of the second motor 142 to the no-load output power of the first motor 132 is greater than or equal to 0.5 and less than or equal to 1.5. In this way, under a certain power output by the power supply device 15, the ratio of the no-load output power of the second motor 142 to the no-load output power of the first motor 132 is within a reasonable range, so that the first motor 132 and the second motor 142 can both operate near the maximum efficiency point as much as possible, thereby improving the working efficiency of the snow sweeper 100. Moreover, it also makes the distribution of the output power of the snow collecting element 131 and the output power of the snow throwing element 141 more reasonable, so that when the snow sweeper 100 operates under load, it can collect snow with a reasonable power and throw snow with a reasonable power.

[0152] The no-load output power of the first motor 132 is greater than or equal to 600 W and less than or equal to 2000 W, so that the first motor 132 can operate near the maximum efficiency point. The no-load output power of the second motor 142 is greater than or equal to 600 W and less than or equal to 2000 W, so that the second motor 142 can operate near the maximum efficiency point. In some embodiments, the no-load output power of the first motor 132 is greater than or equal to 900 W and less than or equal to 1500 W, and the no-load output power of the second motor 142 is greater than or equal to 900 W and less than or equal to 1500 W.

[0153] In some embodiments, the sum of the no-load output power of the first motor 132 and the no-load output power of the second motor 142 is greater than or equal to 1200 W and less than or equal to 4000 W. In this way, when the snow sweeper 100 runs without load, the total output power of the first motor 132 and the second motor 142 can be relatively low, reducing energy loss.

[0154] It should be noted that the no-load parameters of the first motor 132 and the second motor 142 are the parameters when the snow collecting element 131 rotates normally to a stable state without snow sweeping.

[0155] When the snow collecting element 131 operates under load, that is, when the snow sweeper 100 sweeps snow, the maximum load power of the second motor 142 is greater than or equal to 4000 W. In this way, the load power of the second motor 142 can be greater than that of the first motor 132, enabling reasonable energy distribution and ensuring that the snow throwing distance of the snow sweeper 100 is not affected.

[0156] The control device 30 is electrically connected to the first motor 132 and the second motor 142. The control device 30 can adjust the load power of the second motor 142 and the load power of the first motor 132 to change according to the change of the load. In this way, when the load changes, the rotation speed of the first motor 132 can change with the load, and the power can change with the load to ensure the snow sweeping efficiency. Similarly, when the load changes, the power of the second motor 142 can change with the load to ensure the snow throwing distance of the snow sweeper 100.

[0157] The ratio of the load power of the second motor 142 to the load power of the first motor 132 is different from the ratio of the no-load output power of the second motor 142 to the no-load output power of the first motor 132. Specifically, the ratio of the load power of the second motor 142 to the load power of the first motor 132 is greater than the ratio of the no-load output power of the second motor 142 to the no-load output power of the first motor 132. In this way, when the snow blower 100 is in the no-load state, the no-load output power of the second motor 142 is minimized, thereby reducing energy loss. When the snow blower 100 is in the load state, the load power of the second motor 142 is maximized, and its proportion in the total output power is also maximized, thereby improving the load capacity of the snow blower 100.

[0158] As Figure 12 shown, it is a graph of the current change during the working process of the snow blower 100. Among them, curve a is the curve of the current change of the first motor 132, and curve b is the curve of the current change of the second motor 142. Among them, in the no-load stage section, the currents of the first motor 132 and the second motor 142 are basically the same. In the load stage, the current of the second motor 142 is much greater than that of the first motor 132. The current of the first motor 132 remains basically unchanged in the no-load stage and the load stage. For the second motor 142, the current increases significantly from the no-load stage to the load stage. Among them, at point P1 on curve a, the first motor 132 has the maximum current, and at this time, the first motor 132 has the maximum load power. At point P2 on curve b, the second motor 142 has the maximum current, and at this time, the second motor 142 has the maximum load power.

[0159] As Figure 1 , Figures 8 to 10 shown, the snow throwing tube 143 is rotatably connected to the main housing 11. The user can operate the operating assembly 22 to drive the snow throwing tube 143 to rotate relative to the main housing 11 about the first snow throwing axis 106, so that the snow throwing tube 143 opens towards different directions, thereby adjusting the snow throwing direction of the snow blower 100. Among them, the first snow throwing axis 106 extends basically in the up and down direction. In the front and back directions, the snow throwing tube 143 is arranged between the power supply device 15 and the snow collecting cover 111. The main housing 11 further includes a snow throwing housing 114 provided at the rear side of the snow collecting cover 111. The snow throwing housing 114 is used to accommodate the snow throwing element 141. The snow throwing housing 114 is basically a cylindrical surface. The snow throwing tube 143 is connected to the cylindrical surface and communicates with the space inside the snow throwing housing 114. In this way, the snow throwing element 141 can throw the snow towards the snow throwing tube 143 and throw it out through the snow throwing tube 143.

[0160] The snow throwing device 14 further includes a snow throwing cap 145 connected to the snow throwing tube 143. The snow throwing cap 145 is connected to one end of the snow throwing tube 143 away from the main housing 11 and is rotatably connected to the snow throwing tube 143. The snow throwing cap 145 can rotate relative to the snow throwing tube 143 about a second snow throwing axis 107, and the second snow throwing axis 107 is substantially perpendicular to the first snow throwing axis 106. When the snow throwing cap 145 rotates relative to the snow throwing tube 143, the snow throwing cap 145 can change the angle of the moving direction of the snow relative to the ground after the snow comes out of the snow throwing cap 145, so as to guide the snow throwing height of the snow, and further change the snow throwing distance of the snow.

[0161] Define the distance between the position where the snow falls on the ground under the guidance of the snow throwing device 14 and the central axis (the first snow throwing axis 106) of the snow throwing tube 143 as the snow throwing distance L. Exemplarily, as Figure 2 shown, the distance between the central axis of the snow throwing tube 143 and the approximate center in the snow pile is the snow throwing distance L. In this embodiment, the maximum snow throwing distance that the snow sweeper 100 can reach is greater than or equal to 10 m and less than or equal to 21 m. In this embodiment, the snow collecting element 131 and the snow throwing element 141 are each driven by an independent motor, so that the snow throwing element 141 can rotate at a higher speed. The snow sweeper 100 can be set to make the snow throwing element 141 rotate at a higher speed, so that the maximum snow throwing distance that the snow sweeper 100 can reach is large enough to meet the needs of more users. In some embodiments, the maximum snow throwing distance that the snow sweeper 100 can reach is greater than or equal to 12 m and less than or equal to 21 m. In some embodiments, the maximum snow throwing distance that the snow sweeper 100 can reach is greater than or equal to 15 m and less than or equal to 21 m.

[0162] As described above, the user can adjust the rotation speed of the second motor 142 by operating the first operating member 221 to adjust the snow throwing distance. Compared with the prior art in which the snow throwing distance cannot be changed or only a small change in the snow throwing distance is achieved by changing the snow throwing angle, the user can set the snow throwing distance more flexibly.

[0163] In this embodiment, the maximum rotation speed of the snow throwing element 141 is greater than or equal to 500 rpm and less than or equal to 2000 rpm, so as to ensure that the snow sweeper 100 has a large snow throwing distance.

[0164] The snow collecting cover 111 is used for installing the snow collecting element 131. The snow collecting cover 111 includes a top wall, a first side wall 111b, a second side wall 111c, and a rear wall 111d. They enclose an internal space of the snow collecting cover 111, and the snow collecting element 131 is arranged in the internal space. Their front edges enclose the above-mentioned opening 112. The top wall is arranged on the upper side of the snow collecting element 131. The first side wall 111b and the second side wall 111c are respectively arranged on the left and right sides of the top wall. The first side wall 111b extends downward from the left end of the top wall, and the second side wall 111c extends downward from the right end of the top wall. Both ends of the first rotating shaft are respectively rotatably installed on the first side wall 111b and the second side wall 111c. The snow collecting shaft 133 can rotate relative to the first side wall 111b and the second side wall 111c around the first rotation axis 102, so that the snow collecting element 131 connected to the first rotating shaft can rotate relative to the snow collecting cover 111. In this embodiment, the projection of the front edge of the first side wall 111b in the plane perpendicular to the front-rear direction basically extends in the up-down direction, and the projection of the front edge of the second side wall 111c in the plane perpendicular to the front-rear direction basically extends in the up-down direction. The rear wall 111d connects the top wall, the first side wall 111b, and the second side wall 111c, and at least part of the rear wall 111d is arc-shaped. The rear wall 111d is formed with a snow inlet, and the snow inlet is basically located at the middle position of the rear wall 111d in the left-right direction. In this way, the snow collecting element 131 can gather the snow towards the middle and guide the snow backward, so that most of the snow can move towards the snow inlet, improving the efficiency of snow sweeping.

[0165] As Figure 6 shown, a coordinate system is established with a point on the first rotation axis 102 of the snow collecting element 131 as the origin O, the front-rear direction as the X-axis, and the up-down direction as the Y-axis. The positive direction of the X-axis is forward, and the positive direction of the Y-axis is upward. The coordinate system has a first quadrant, a second quadrant, a third quadrant, and a fourth quadrant. Among them, as Figure 6As shown in the figure, the projection of the first motor 132 in the plane of the coordinate system is located within an angular region A that has the origin O as its vertex and lies in the plane of the coordinate system. The first side S1 of the angular region A is located in the first quadrant of the coordinate system, and the angle A1 between it and the positive direction of the Y-axis is less than or equal to 60 degrees. The second side S2 of the angular region A is located in the second quadrant of the coordinate system, and the angle A2 between it and the positive direction of the Y-axis is less than or equal to 80 degrees. In this way, the position of the first motor 132 and the position of the first transmission assembly 134 connecting the first motor 132 and the snow collection element 131 can be conveniently arranged, and the snow collection element 131 can be driven by the first motor 132 independently of the second motor 142 at low cost and reliably. Moreover, since the first motor 132 is arranged within the angular region A, the second motor 142 can be conveniently arranged at the rear side of the snow throwing element 141. When the first motor 132 is arranged within the angular region A, the first transmission assembly 134 can more easily achieve power transmission between the first motor 132 and the snow collection element 131.

[0166] The projection of the first motor 132 in the plane of the coordinate system is located within a circular region that has the origin O as its center and lies in the plane of the coordinate system, and the radius of the circular region is less than or equal to 0.7 m. In this way, the distance between the first motor 132 and the snow collection element 131 can be reduced, making the transmission more stable. In some embodiments, the radius of the circular region is less than or equal to 0.4 m.

[0167] The first side S1 of the angular region A is located in the first quadrant of the coordinate system, and the angle between it and the positive direction of the Y-axis is less than or equal to 30 degrees. The second side S2 of the angular region A is located in the second quadrant of the coordinate system, and the angle between it and the positive direction of the Y-axis is less than or equal to 60 degrees. More specifically, the first motor 132 is arranged on the upper side of the first rotation axis 102. In some embodiments, the first motor 132 is arranged on the upper side of the snow collection element 131. This can make full use of the space above the snow collection element 131, thereby reducing the size of the snow sweeper 100 in the front-rear direction.

[0168] The projection of the first motor 132 in the plane perpendicular to the front-rear direction is located between the projections of the first side wall 111b and the second side wall 111c in the plane perpendicular to the front-rear direction. It should be noted that, as Figure 10 shown, in the left-right direction, the first motor 132 does not extend beyond the first side wall 111b and the second side wall 111c, that is, it is considered that the first motor 132 is located between the first side wall 111b and the second side wall 111c in the left-right direction. In this way, the problem of increased load on the snow sweeper 100 caused by the first motor 132 extending beyond the first side wall 111b and the second side wall 111c in the left-right direction is avoided, so that during the snow sweeping process of the snow sweeper 100, the snow on the left and right sides will not come into contact with the first motor 132.

[0169] In this embodiment, the main housing 11 further includes a first motor housing 115. The first motor housing 115 is mounted to the outer side of the top wall. The first motor housing 115 forms a first receiving space for receiving the first motor 132, so that the first motor 132 is disposed on the upper side of the top wall. In this way, on the one hand, the height of the first motor 132 is relatively high, and it can be not touched by snow, without affecting the load of the snow sweeper 100. On the other hand, since the first motor 132 is disposed on the upper side of the top wall, it is convenient to arrange the transmission assembly. Specifically, the first transmission assembly 134 includes a long shaft 134d passing through the top wall. One end of the long shaft 134d close to the motor is connected to the first reduction assembly, and the other end of the long shaft 134d away from the motor is connected to the second reduction assembly. The first reduction assembly connects the first motor 132 and the long shaft 134d, and the second reduction assembly connects the long shaft 134d and the snow collecting shaft 133. The extending direction of the long shaft 134d is perpendicular to the first rotation axis 102. Alternatively, in other embodiments, the extending direction of the long shaft 134d may also be inclined relative to the first rotation axis 102.

[0170] In this way, both the first motor 132 and the first transmission assembly 134 are disposed on the front side of the second motor 142, and are also disposed on the front side of the snow throwing element 141. Thus, the overall layout of the snow sweeper 100 is reasonable, the transmission structure is simple, and it is easier to implement.

[0171] As Figure 1 and Figure 4 shown, the snow sweeper 100 further includes an electric wire 31 for the first motor 132. The electric wire 31 extends at least partially outside the snow collecting cover 111. The electric wire 31 is connected to the power supply device 15 and / or the control device 30, so that the power supply device 15 and the control device 30 are electrically connected to the first motor 132. In this case, since the first motor 132 is disposed on the upper side of the top wall of the snow collecting cover 111, it is also convenient for arranging the electric wire 31.

[0172] As Figure 11As shown, the control device 30 is electrically connected to the first motor 132 and the second motor 142. The control device 30 can control the rotation speed of the first motor 132 according to the state of the snow and the traveling speed of the traveling assembly 12. In this way, when the state of the snow changes or the traveling speed of the traveling assembly 12 changes, the control device 30 can automatically control the rotation speed of the first motor 132, so that the rotation speed of the snow collection element 131 automatically adapts to the changes in the state of the snow and the traveling speed. In this way, the rotation speed of the snow collection element 131 can not only adapt to the change of the load, but also change according to the change of the traveling speed of the traveling assembly 12. Compared with the prior art method of only adjusting the speed of the snow collection element 131 according to the change of the state of the snow, it is more intelligent. Because when the state of the snow changes to a certain state, if the traveling speed of the snow sweeper 100 is different, it will also affect the change of the load of the snow collection element 131. If the snow collection element 131 adapts to the state of the snow and remains unchanged at this time, and the traveling speed of the snow sweeper 100 is different, it may cause the situation that the snow collection element 131 may not clean the snow thoroughly or there is an excess of energy.

[0173] Among them, the state of the snow may include the thickness and / or density of the snow. In this embodiment, the thickness of the snow is taken as an example.

[0174] As Figure 13A and Figure 13B shown, the corresponding rotation speed of the snow collection element 131 is set according to different snow thicknesses and traveling speeds. It can be understood that the control device 30 directly controls the rotation speed of the first motor 132, and ultimately realizes the control of the rotation speed of the snow collection element 131. Or it can also be said that the control device 30 can calculate the corresponding rotation speed of the first motor 132 according to the rotation speed of the snow collection element 131 and the reduction ratio of the first transmission assembly 134 and control the first motor 132.

[0175] Specifically Figure 13A when the thickness of the snow is 0.1 m, at different traveling speeds, the corresponding snow collection element 131 has different rotation speeds. And in this embodiment, when the rotation speed of the snow collection element 131 changes, the rotation speed of the snow throwing element 141 remains unchanged. In the design, the traveling snow intake corresponding to the traveling speed can be made less than the snow collection amount of the snow collection element 131, and the snow collection amount of the snow collection element 131 can be made less than the snow throwing amount of the snow throwing element 141. In this way, the snow (traveling snow intake) passed by when the snow sweeper 100 travels can be basically completely collected by the snow collection element 131, and the snow collected by the snow collection element 131 can also be basically completely thrown out by the snow throwing element 141, thus avoiding the situation that the snow is not cleaned thoroughly.

[0176] It can be understood that the snow intake during travel is the amount of snow covered by the snow sweeper 100 during travel per unit time. The snow intake during travel is related to the thickness of the snow and the travel speed. The greater the thickness, the greater the snow intake during travel, and the greater the travel speed, the greater the snow intake during travel. The snow collection amount refers to the amount of snow that the snow collection element 131 can collect. The snow collection amount is related to the rotation speed of the snow collection element 131. The greater the rotation speed, the greater the snow collection amount. The snow throwing amount refers to the amount of snow that the snow throwing element 141 can throw. The snow throwing amount of the snow throwing element 141 is related to the rotation speed of the snow throwing element 141. The greater the rotation speed, the greater the snow throwing amount.

[0177] Referring to Figure 13A and Figure 13B , for example, when the travel speed is maintained at 0.05 m / s and the thickness of the snow changes from 0.1 m to 0.2 m, the rotation speed of the snow collection element 131 will also change.

[0178] As can be seen from the above, in this embodiment, when the state of the snow remains unchanged, the greater the travel speed of the travel assembly 12, the greater the rotation speed of the first motor 132. That is to say, when the state of the snow remains unchanged, the greater the travel speed of the travel assembly 12, the greater the snow intake during travel of the travel assembly 12. At this time, it is necessary for the snow collection element 131 to match a greater snow collection amount to clean the snow.

[0179] When the travel speed of the travel assembly 12 remains unchanged, the greater the thickness and / or density of the snow, the greater the rotation speed of the first motor 132. That is to say, when the travel speed of the travel assembly 12 remains unchanged, the greater the thickness of the snow, the greater the snow intake during travel of the travel assembly 12. At this time, it is also necessary for the snow collection element 131 to match a greater snow collection amount to clean the snow

[0180] Such as Figure 13A and Figure 13B , when the travel speed and the rotation speed of the snow collection element 131 change, the rotation speed of the snow throwing element 141 can remain unchanged, so as to ensure that the snow throwing distance remains unchanged, so that the snow sweeper 100 throws snow to a preset position. That is to say, when the control device 30 controls the rotation speed of the first motor 132, the rotation speed of the second motor 142 may not change with the change of the rotation speed of the first motor 132. Or, when the control device 30 controls the change of the rotation speed of the first motor 132, the control device 30 controls the rotation speed of the second motor 142 to remain unchanged. Of course, it can be understood that, in fact, the control device 30 can also adjust the change of the rotation speed of the second motor 142 according to the change of the load and / or the travel speed and / or the rotation speed of the first motor 132 to achieve more intelligent control of the snow sweeper 100.

[0181] The snow sweeper 100 may further include a memory 32. The state of the snow, the traveling speed of the traveling assembly 12, and the rotational speed mapping relationship of the first motor 132 may be pre-stored in the memory 32. Among them, the rotational speed of the first motor 132 can also be understood as the rotational speed of the snow collecting element 131, because the rotational speed of the first motor 132 can be calculated from the rotational speed of the snow collecting element 131 and the reduction ratio of the first transmission assembly 134. If the stored is the rotational speed of the snow collecting element 131, and since there is a corresponding relationship between the rotational speed of the snow collecting element 131 and the rotational speed of the first motor 132, it can still be considered as the mapping relationship of the state of the snow, the traveling speed of the traveling assembly 12, and the rotational speed of the first motor 132 at this time.

[0182] The control device 30 is connected to the memory 32. In this way, when the control device 30 obtains the state of the snow and the traveling speed, it can obtain the rotational speed of the first motor 132 according to the mapping relationship, and then control the first motor 132 according to the obtained value, so as to make the snow sweeper 100 perform snow sweeping more intelligently and efficiently, improve the work efficiency, and reduce the energy loss.

[0183] The mapping relationship may include, for example Figure 13A and Figure 13B a relationship table of. When the mapping relationship is a relationship table, if the thickness of the snow is between 0.1 and 0.2, then Figure 13B the data in can be adopted. Similarly, when the traveling speed is between two speeds, a similar method is also used for calculation.

[0184] Alternatively, in other embodiments, the mapping relationship may also be a relationship function. The input parameters of the relationship function may be the traveling speed and the thickness of the snow, and the output parameter of the relationship function may be the rotational speed of the first motor 132.

[0185] It can be understood that, in some embodiments, the control device 30 may also control the rotational speed of the first motor 132 according to the traveling speed. In some embodiments, the control device 30 may control the rotational speed of the first motor 132 only according to the change of the traveling speed without depending on the change of the state of the snow. In this way, when the traveling speed becomes faster, the control device 30 controls the rotational speed of the first motor 132 to increase, and when the traveling speed becomes slower, the control device 30 controls the rotational speed of the first motor 132 to decrease. In this way, to a certain extent, the snow sweeper 100 can also achieve intelligent control, improve work efficiency, and reduce energy loss.

[0186] Such as Figure 1 and Figure 11As shown, the snow sweeper 100 further includes a detection device 40 for detecting the state of snow. The control device 30 is communicatively or electrically connected to the detection device 40. The control device 30 obtains the state parameters of the snow state through the detection device 40, thereby adjusting the rotation speed of the first motor 132. The snow sweeper 100 further includes a speed detection device 50, and the speed detection device 50 can be electrically or communicatively connected to the control device 30. The speed detection device 50 is used to detect the traveling speed. The control device 30 obtains the traveling speed through the speed detection device 50 to control the rotation speed of the first motor 132.

[0187] In one embodiment of the present application, a control method for the snow sweeper 100 is further provided. As shown in FIG. 14, it is a control flowchart of an embodiment of the snow sweeper 100. Combining FIGS. 1 and 14, the control method includes:

[0188] S101, start the snow sweeper. Among them, starting the snow sweeper 100 may refer to the snow sweeper 100 being powered on and starting the traveling motor 122 so that the snow sweeper 100 travels on the ground. Alternatively, the first motor 132 and / or the second motor 142 of the snow sweeper 100 may also be started.

[0189] S102, obtain the state parameters of the snow and the traveling speed. Among them, the state parameters of the snow can be detected by the detection device 40, and the state parameters of the snow can be the thickness of the snow or the density of the snow. The traveling speed can be detected by the speed detection device 50. The control device 30 obtains the state parameters of the snow and the traveling speed of the traveling assembly 12.

[0190] S103, obtain the rotation speed of the first motor 132 according to the state parameters of the snow and the traveling speed. The control device 30 obtains the rotation speed of the first motor 132 according to the state parameters of the snow, the traveling speed, and the mapping relationship stored in the memory 32.

[0191] S104, control the first motor according to the obtained rotation speed of the first motor. Control the duty cycle of the PWM signal of the first motor 132 according to the obtained rotation speed of the first motor 132, thereby controlling the output rotation speed of the first motor 132.

[0192] In some embodiments, the control device 30 is further configured to control the traveling speed of the traveling assembly 12 and the rotational speed of the first motor 132 according to the state of the snow. That is to say, the input parameter is the state parameter of the snow, and the output parameters are the traveling speed of the traveling assembly 12 and the rotational speed of the first motor 132, so that the snow sweeper 100 can achieve fully intelligent control. The user does not need to control the traveling speed of the snow sweeper 100 according to the change of the snow state, but the control device 30 automatically controls the traveling speed of the snow sweeper 100 and controls the matching relationship between the first motor 132 and the traveling speed. In this way, the snow sweeper 100 can travel at a more optimal traveling speed and the rotational speed of the first motor 132 according to the change of the snow state, thereby improving the working efficiency of the snow sweeper 100.

[0193] In this embodiment, the memory 32 may store the mapping relationship among the state of the snow, the traveling speed of the traveling assembly 12, and the rotational speed of the first motor 132. In this way, when the control device 30 obtains the state parameter of the snow, it can obtain a traveling speed and the rotational speed of the first motor 132 that match the state parameter of the snow according to the mapping relationship, and then the control device 30 controls the traveling motor 122 and the first motor 132. In this way, the control method of the snow sweeper 100 is simpler. The snow sweeper 100 only needs to identify the state parameter of the snow and automatically match the traveling speed and the rotational speed of the first motor 132, making the control of the snow sweeper 100 more intelligent.

[0194] Similarly, the mapping relationship may include a relationship table or a relationship function. When the mapping relationship is Figure 15 the relationship table shown in the example, if the thickness of the snow is between 0.02 m and 0.04 m, the corresponding data when the thickness of the snow is 0.04 m can be adopted.

[0195] Alternatively, in other embodiments, the mapping relationship may also be a relationship function. The input parameter of the relationship function may be the thickness of the snow, and the output parameters of the relationship function may be the traveling speed of the traveling motor 122 and the rotational speed of the first motor 132.

[0196] As shown in FIG. 16, the mapping relationship may be a relationship function. Among them, Figure 16A represents the corresponding relationship between the thickness of the snow and the working condition, Figure 16B is the corresponding relationship between the traveling speed and the working condition, Figure 16C is the corresponding relationship between the rotational speed of the first motor 132 and the working condition. When the control device 30 obtains the parameter of the thickness of the snow, the control device 30 can correspondingly obtain the working condition in which the snow sweeper 100 is located at this time, and then obtain the traveling speed of the traveling assembly 12 and the rotational speed of the first motor 132 according to the corresponding working condition. For example, Figure 16AAs shown, the working conditions include light load conditions and heavy load conditions. Among them, the light load conditions can correspond to working conditions 0 to 4, and the heavy load conditions can correspond to the working conditions after condition 4. Under the light load conditions, the power output by the power supply device 15 is sufficient to meet the operation of the traveling motor 122, the first motor 132, and the second motor 142. Therefore, under the light load conditions, the traveling speed is relatively high. For example, Figure 16B as shown, it can make the traveling speed constant at 0.7 m / s without increasing with the increase of the snow thickness. At this time, the rotation speed of the first motor 132 can change with the change of the snow thickness. Under the light load conditions, as the snow thickness increases, the snow intake amount of the snow covered by the sweeper 100 during traveling gradually increases. Therefore, it is necessary to gradually increase the rotation speed of the first motor 132 to collect the covered snow as much as possible. For example, Figure 16C as shown, when the sweeper 100 enters the heavy load conditions, if the traveling speed still remains at a relatively high speed at this time, then the rotation speed of the first motor 132 also needs to increase. Obviously, this will cause the total power of the first motor 132, the traveling motor 122, and the second motor 142 to exceed the power output by the power supply device 15. Therefore, it is necessary to reduce the traveling speed of the traveling device at this time to ensure that the power output by the power supply device 15 meets the operation of the sweeper 100, avoid the situation of the sweeper 100 being blocked, and at the same time reduce the energy loss. Specifically, in the heavy load situation, the rotation speed of the first motor 132 is set at a preset rotation speed to ensure that the first motor 132 works near the maximum efficiency point. At this time, the snow that the snow collection element 131 can collect is fixed. As the snow thickness increases, it is necessary to ensure that the snow intake amount of the snow covered by the sweeper 100 during traveling is less than or equal to the snow collection amount that the snow collection element 131 can collect. Therefore, it is necessary to reduce the traveling speed of the traveling assembly 12 with the change of the snow thickness.

[0197] In this embodiment, when the control device 30 controls the rotation speed of the first motor 132, the rotation speed of the second motor 142 may not change with the change of the rotation speed of the first motor 132, so that the rotation speed of the second motor 142 remains unchanged.

[0198] In some embodiments, the control device 30 is further configured to adjust the rotation speed of the first motor 132 according to the state of the snow, and then control the traveling speed of the traveling assembly 12 according to the state of the snow and the rotation speed of the first motor 132, so that the sweeper 100 can clean the snow at a relatively more reasonable speed and improve the working efficiency.

[0199] When the snow sweeper 100 is in a heavy load condition, that is, when the state parameter of the snow is greater than the first preset value, the rotational speed of the first motor 132 remains constant at the first constant rotational speed value. This enables the snow sweeper 100 to operate near the maximum efficiency point as much as possible under heavy load conditions. At this time, the traveling speed of the traveling assembly 12 decreases as the state parameter of the snow increases, so that it can not only ensure that the snow sweeper 100 reduces the occurrence of jamming, but also ensure that the snow intake amount of the traveling assembly 12 is less than or equal to the snow collection amount of the snow collection element 131.

[0200] When the snow sweeper 100 is in a light load condition, that is, when the state parameter of the snow is less than the first preset value, the rotational speed of the first motor 132 is less than the first constant rotational speed value, and the rotational speed of the first motor 132 also increases as the state parameter of the snow increases. At this time, the traveling speed of the traveling assembly 12 is constant at the second constant rotational speed value, which can enable the snow sweeper 100 to clean the snow at a faster speed, thereby improving the working efficiency. Among them, when the state parameter of the snow is greater than the first preset value, the traveling speed is also less than the second constant rotational speed.

[0201] In an embodiment of the present application, another control method of the snow sweeper 100 is also provided. As shown in FIG. 17, it is a control flow chart of an embodiment of the snow sweeper 100. Combining FIGS. 1 and 17, the control method includes:

[0202] S201, start the snow sweeper 100. Among them, starting the snow sweeper 100 may refer to the snow sweeper 100 being powered on and starting the traveling motor 122 so that the snow sweeper 100 travels on the ground. Or, it may also be that the first motor 132 and / or the second motor 142 of the snow sweeper 100 are also started.

[0203] S202, obtain the state parameter of the snow. Among them, the state parameter of the snow can be detected by the detection device 40, and the state parameter of the snow can be the thickness of the snow or the density of the snow.

[0204] S203, obtain the traveling speed and the rotational speed of the first motor 132 according to the state parameter of the snow. The control device 30 obtains the traveling speed and the rotational speed of the first motor 132 according to the state parameter of the snow and the mapping relationship stored in the memory 32.

[0205] S204, control the traveling motor 122 and the first motor 132 according to the obtained traveling speed and the rotational speed of the first motor 132. Control the duty ratio of the traveling motor 122 and the duty ratio of the first motor 132 according to the obtained traveling speed and the rotational speed of the first motor 132, so as to control the output rotational speed of the traveling motor 122 and the output rotational speed of the first motor 132.

[0206] Such as Figures 1 to 3As shown, the detection device 40 includes a first detection component 41 and a second detection component 42. Among them, the first detection component 41 is used to detect the snow on the left side of the snow collection cover 111, and the second detection component 42 is used to detect the snow on the right side of the snow collection cover 111. In this way, when the snow sweeper 100 is cleaning the snow on the left side, the state parameters of the snow can be detected by the first detection component 41, and when the snow sweeper 100 is cleaning the snow on the right side, the state parameters of the snow can be detected by the second detection component 42. Thus, the snow sweeper 100 can be applied to more working conditions and can also meet the different usage habits of users. Moreover, through the first detection component 41 and the second detection component 42, the detection structure can be made more accurate.

[0207] As Figure 2 , Figure 11 and Figure 18 shown, the first detection component 41 can be installed on the first side wall 111b of the snow collection cover 111 so that the first detection component 41 is located outside the main housing 11, and the second detection component 42 can be installed on the second side wall 111c so that the second detection component 42 is located outside the main housing 11. Installing the detection device 40 on the side of the snow collection cover 111 can prevent the snow collected during the snow sweeping process of the snow sweeper 100 from affecting the accuracy of the detection results.

[0208] The first detection component 41 includes: a first detection element 411 and a first sensor 412. In this embodiment, the first detection element 411 can be used to detect the thickness of the snow. Specifically, the first detection element 411 can be driven by the snow in front of or on the left side of the snow sweeper 100 to change its position. The first detection element 411 is installed on the first side wall 111b, and the first detection element 411 can rotate relative to the snow collection cover 111. As Figure 18 shown, when snow of a certain thickness contacts the first detection element 411, it will drive the first detection element 411 to rotate, and the magnitude of the rotation angle of the first detection element 411 changes with the change of the snow thickness. The greater the snow thickness, the greater the rotation angle of the first detection element 411. The smaller the snow thickness, the smaller the rotation angle of the first detection element 411. The first sensor 412 is used to detect the position change of the first detection element 411. For example, the first sensor 412 can be a position sensor, an angle sensor, etc.

[0209] The second detection component 42 has corresponding second detection element 421 and second sensor 422.

[0210] The first detection component 41 is installed outside the first side wall 111b to detect the thickness of the snow outside the first side wall 111b, and the second detection component 42 is installed outside the second side wall 111c to detect the thickness of the snow outside the second side wall 111c.

[0211] The control device 30 is connected to the first detection component 41 and the second detection component 42 to obtain the detection data of the first detection component 41 and the second detection component 42. The control device 30 can obtain the current snow state parameters according to the snow state parameters on the left detected by the first detection component 41 and / or the snow state parameters on the right detected by the second detection component 42. When the snow sweeper 100 sweeps the snow on the left, the first detection device 40 will detect the snow state parameters on the left, and the second detection component 42 does not detect data. Then the control device 30 can control the snow sweeper 100 only according to the data detected by the first detection component 41. When the snow sweeper 100 sweeps the snow on the right, the second detection device 40 will detect the snow state parameters on the right, and the first detection component 41 does not detect data. Then the control device 30 can control the snow sweeper 100 only according to the data detected by the second detection component 42.

[0212] In some embodiments, the first detection component 41 can detect the first data, the second detection component 42 can detect the second data, and the control device 30 can sum the first data and the second data and then take the average value, and use this average value as the current snow state parameter. Alternatively, after obtaining the first data and the second data, the control device 30 can also use the larger data among the first data and the second data as the current snow state parameter.

[0213] In some embodiments, the detection device can also be a sensor for detecting current. The detection device can detect the current flowing through the first motor, and the control device adjusts the traveling speed of the traveling component according to the current flowing through the first motor. As we know, the current of the first motor will change with the state of the snow. Therefore, the current of the first motor can also reflect the change of the state of the snow. Therefore, the control device can judge the load of the snow sweeper, that is, the thickness of the snow, by obtaining the current of the first motor. At this time, the control device controls the change of the traveling speed to adapt to the change of the thickness of the snow.

[0214] Alternatively, the detection device can also detect the current flowing through the second motor, and the control device adjusts the traveling speed of the traveling component according to the current flowing through the second motor.

[0215] As Figure 19 shown, the snow sweeper 200 of another embodiment is basically the same as the snow sweeper 100 in Figure 1 , and the main difference lies in the different detection devices 201. Figure 1 All the structures of the snow sweeper 100 in Figure 19 that are applicable to the snow sweeper 200 in

[0216] In this embodiment, the detection device 201 is installed at the top wall 202a of the snow collecting cover 202. For example, the detection device 201 can be installed on the upper side of the top wall 202a. The detection device 201 is electrically connected to the control device. The cable in the detection device 201 can pass through the first motor housing 203 and then extend to the control device on the outer wall of the snow collecting cover 202. The detection device 201 can be an ultrasonic sensor, an infrared sensor, etc.

[0217] In Figure 1 and Figure 19 The snow blowers 100 and 200 shown are second-order snow blowers. That is to say, the snow guiding process includes a snow collecting element 131 and a snow throwing element 141. In fact, in other types of snow blowers, the snow guiding process can also include a transfer element disposed between the snow collecting element and the snow throwing element, and the transfer element can rotate relative to the main housing. The transfer element can transfer the snow collected by the snow collecting element to the snow throwing element by high-speed rotation, and then the snow throwing element guides the snow to the snow throwing tube. The transfer element can be driven by a third motor. In this way, the control device can control the rotation speeds of the first motor and / or the second motor and / or the third motor, thereby improving the working efficiency of the snow blower.

[0218] As Figure 20 and 21 shown, the snow blower 300 has a snow collecting device, a snow throwing device, and a traveling device that are basically the same as those in the first embodiment. The main difference is that the operation assembly further includes a mode setting member 301. The mode setting member 301 is for the user to operate and select a working mode. The mode setting member 301 can enable the snow blower 300 to be at least in a first working mode and a second working mode. In the first working mode, the control device 304 can control the traveling motor 302 to operate at a first preset rotation speed and control the first motor 303 to operate at a second preset rotation speed. In the second working mode, the control device 304 can control the traveling motor 302 to operate at a third preset rotation speed and control the first motor 303 to operate at a fourth preset rotation speed. Among them, the third preset rotation speed is different from the first preset rotation speed, or the fourth preset rotation speed is different from the second preset rotation speed. In this way, the user can observe the state of the snow and independently select the first working mode or the second working mode without setting a detection component for detecting the state of the snow, thereby making the control of the snow blower 300 more accurate and avoiding the possible inaccurate detection of the detection device under complex working conditions. Or, the user can also set the working mode of the snow blower 300 according to the working needs. Among them, different working modes with corresponding traveling speeds and rotation speeds of the snow collecting element can be stored in the memory 305, and the control device 304 can calculate the corresponding rotation speeds of the traveling motor 302 and the first motor 303 in different working modes according to the corresponding traveling speeds and rotation speeds of the snow collecting element.

[0219] Among them, the first working mode can be a light load mode. For example, Figure 22 as shown, the first working mode can correspond to the working conditions of the light load gear, and the working conditions of the light load gear are suitable for clearing snow less than 0.05 m. When the user observes that the snow to be cleared is very thin, perhaps less than 0.05 m, the user can set the snow sweeper 300 to enter the first working mode through the mode setting member 301. The second working mode can be a medium load mode, specifically it can be Figure 22 the working conditions corresponding to the medium load gear 1 in

[0220] In some embodiments, the mode setting member 301 can also be set to enable the snow sweeper 300 to enter the third working mode. When the snow sweeper 300 is in the third working mode, the control device 304 controls the traveling motor 302 to operate at a fifth preset speed and controls the first motor 303 to operate at a sixth preset speed. For example, Figure 22 as shown, the third working mode can correspond to the working conditions of the medium load gear 2. The working conditions of the medium load gear 1 are suitable for clearing snow from 0.1 m to 0.2 m.

[0221] In some embodiments, the mode setting member 301 can also be set to enable the snow sweeper 300 to enter the fourth working mode and the fifth working mode. For example, Figure 21 as shown, the fourth working mode can correspond to the working conditions of the medium load gear 3, and the fifth working mode can correspond to the heavy load working conditions. The number of working modes is not limited thereto.

[0222] In this embodiment, the snow collecting element and the snow throwing element are the same as Figure 1 the snow sweeper 100 in

[0223] As we know, it requires certain experience to observe the snow thickness through users to determine which working mode the snow sweeper 300 should be set to, and there may be a problem of mode mismatch. Therefore, in this embodiment, a first mark 308 corresponding to the first working mode and a second mark 309 corresponding to the second working mode are further provided on the snow collecting cover 307. Among them, the first mark 308 can be a first marking line at a first height from the ground, and this first marking line can intuitively reflect the snow thickness. The first mark 308 can be a first marking line at a second height from the ground. When the snow thickness is below the first marking line, the user can make the snow sweeper 300 enter the first working mode through the mode setting member 301. When the snow thickness is between the first marking line and the second marking line, the user can make the snow sweeper 300 enter the second working mode through the mode setting member 301.

[0224] In some embodiments, a third marking line corresponding to the third working mode, a fourth marking line corresponding to the fourth working mode, and a fifth marking line corresponding to the fifth working mode can also be provided on the snow collecting cover 307.

[0225] Specifically, as Figure 21 , shown, the first marking line can be set at a height of 0.05 m from the ground on the snow collecting cover 307, the second line can be set at a height of 0.1 m from the ground on the snow collecting cover 307, the third marking line can be set at a height of 0.2 m from the ground on the snow collecting cover 307, the fourth marking line can be set at a height of 0.3 m from the ground on the snow collecting cover 307, and the fifth marking line can be set at a height of 0.4 m from the ground on the snow collecting cover 307.

[0226] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art of this industry should understand that the above embodiments do not limit the present application in any form. Any technical solutions obtained by using equivalent replacements or equivalent transformations fall within the protection scope of the present application.

Claims

1. A snow sweeper, comprising: A snow collection device, including a snow collection element for collecting snow; A snow throwing device, including a snow throwing element for throwing the snow collected by the snow collection device and a snow throwing tube for guiding the throwing direction of the snow; A main housing for supporting the snow collection device and the snow throwing device; A traveling assembly for driving the snow sweeper to travel on the ground; Characterized in that The snow collection device further includes a first motor for driving the snow collection element to rotate, and the snow throwing device further includes a second motor for driving the snow throwing element to rotate; the snow sweeper further includes: A power supply device for supplying power to the first motor and the second motor; Wherein, when the snow collection element operates without load, the operating current of the first motor is less than or equal to 40A.

2. The snow sweeper according to claim 1, wherein When the snow collection element operates without load, the sum of the operating currents of the first motor and the second motor is less than or equal to 80A.

3. The snow sweeper according to claim 1, characterized in that, The power supply device includes a battery pack for supplying power to the first motor and / or the second motor, and the nominal voltage of the battery pack is greater than or equal to 24V.

4. The snow sweeper according to claim 3, characterized in that, The nominal voltage of the battery pack is greater than or equal to 40V.

5. The snow sweeper according to claim 1, characterized in that, Further includes: A control device configured to adjust the rotation speed of the first motor in response to a change in load.

6. The snow sweeper according to claim 5, characterized in that, When the control device adjusts the rotation speed of the first motor in response to the change in load, the rotation speed of the second motor is maintained at a rotation speed value corresponding to a set snow throwing distance.

7. The snow sweeper according to claim 1, characterized in that, The snow collection device further includes a first transmission assembly connecting the first motor and the snow collection element, and the snow throwing device further includes a second transmission assembly connecting the second motor and the snow throwing element.

8. A snow sweeper, comprising: A snow collection device, including a snow collection element for collecting snow; A snow throwing device, including a snow throwing element for throwing the snow collected by the snow collection device and a snow throwing tube for guiding the throwing direction of the snow; A main housing for supporting the snow collection device and the snow throwing device; A traveling assembly for driving the snow sweeper to travel on the ground; Characterized in that The snow collection device further includes a first motor for driving the snow collection element to rotate, and the snow throwing device further includes a second motor for driving the snow throwing element to rotate; the snow sweeper further includes: A power supply device for supplying power to the first motor and the second motor; Wherein, when the snow collection element operates without load, the ratio of the no-load output power of the second motor to the no-load output power of the first motor is greater than or equal to 0.5 and less than or equal to 1.

5.

9. The snow sweeper according to claim 8, wherein, The no-load output power of the first motor is greater than or equal to 600W and less than or equal to 2000W, and the no-load output power of the second motor is greater than or equal to 600W and less than or equal to 2000W.

10. The snow sweeper according to claim 8, characterized in that, The sum of the no-load output powers of the first motor and the second motor is greater than or equal to 1200W and less than or equal to 4000W.

11. The snow sweeper according to claim 8, characterized in that, The maximum load power of the second motor is greater than or equal to 4000W.

12. The snow sweeper according to claim 8, characterized in that, Further includes: A control device configured to adjust the ratio of the load output power of the second motor to the load output power of the first motor according to the load.

13. The snow sweeper according to claim 8, characterized in that, The ratio of the load output power of the second motor to the load output power of the first motor is greater than the ratio of the no-load output power of the second motor to the no-load output power of the first motor.

14. The snow sweeper according to claim 8, wherein, The diameter of the first motor is greater than or equal to 30 mm and less than or equal to 110 mm.

15. The snow sweeper according to claim 8, characterized in that, The diameter of the second motor is greater than or equal to 60 mm and less than or equal to 135 mm.

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