Snow plough

Abstract

The application relates to the technical field of snow removing equipment, and discloses a snow removing vehicle which comprises a chassis, a snow removing assembly, an oil supply assembly and a control unit; the snow removing assembly is installed at the front end of the chassis, and comprises a snow removing piece and a snow removing driving piece which are drivingly connected; the oil supply assembly is arranged on the chassis and comprises a plurality of oil pumps with different displacements; the control unit is electrically connected with the plurality of oil pumps and is configured to: acquire a working mode required by the snow removing assembly; and supply oil to the snow removing driving piece by selecting at least one oil pump according to the working mode. According to the application, the oil supply assembly is composed of a plurality of oil pumps with different displacements, different displacement oil supply modes are selected according to the different working condition requirements of the snow removing assembly, the purpose of controlling the snow removing driving piece by a single control system is achieved, the control method is simple and reliable, maintenance is simple, and the cost is lower.

Description

Technical Field

[0001] This application belongs to the field of snow removal equipment technology, and specifically relates to a snow removal vehicle. Background Technology

[0002] Snow removal is a crucial winter emergency response measure, and ensuring road access during winter is vital for people's economic and daily lives. Snowplows are currently the most widely used snow removal equipment in China. They are typically mounted at the front of a vehicle and clear snow from the roadside to the side, where it is then transported to a designated location by a transport vehicle. They are highly efficient and can quickly clear snow-covered sections of road. Since the rotational speed of the brush roller directly determines the efficiency, different operating areas and conditions require different brush roller speeds. Currently, the rotation of the brush roller in snowplows is generally driven by a single oil pump. The pump's displacement and the power source's rotational speed determine the maximum rotational speed of the brush roller, which limits its application scenarios and efficiency, resulting in low overall efficiency. Therefore, to achieve multiple brush roller speed controls, it is necessary to configure pumps with different displacements, making the entire snow removal system more complex. Summary of the Invention

[0003] The purpose of this application is to provide a snowplow that uses the same lubrication system to supply oil to snowplow components under different working conditions, thereby simplifying the control system of the entire snowplow equipment.

[0004] To achieve the above objectives, this application provides a snowplow, which includes:

[0005] Chassis;

[0006] A snow removal assembly is installed at the front end of the chassis, and the snow removal assembly includes a snow removal component and a snow removal drive component that are connected by a drive.

[0007] The oil supply assembly, mounted on the chassis, includes multiple oil pumps of different displacements; and

[0008] The control unit, electrically connected to all of the oil pumps, is configured to:

[0009] Obtain the operating mode required for the snow removal component;

[0010] According to the operating mode, at least one of the oil pumps is selected to supply oil to the snow removal drive unit.

[0011] In some embodiments, the snow removal component is a snow removal roller brush, the snow removal drive component is a roller brush motor, and the oil supply assembly includes a first oil pump, a second oil pump, and a third oil pump connected in series, wherein the displacement of the second oil pump is greater than the displacement of the third oil pump.

[0012] The control unit is further configured to:

[0013] When the required operating mode for the snow removal roller brush is the standard mode, the oil circuit between the first oil pump and the roller brush motor is connected.

[0014] In some embodiments, the control unit is further configured to:

[0015] When the snow removal roller brush is required to operate in medium speed mode, the oil circuits between the first oil pump and the third oil pump and the roller brush motor are all connected.

[0016] In some embodiments, the control unit is further configured to:

[0017] When the snow removal roller brush is required to operate in high-speed mode, the oil circuits between the first oil pump and the second oil pump and the roller brush motor are connected.

[0018] In some embodiments, the control unit is further configured to:

[0019] When the snow removal roller brush is required to operate in ultra-high speed mode, the oil circuits between the first oil pump, the second oil pump, the third oil pump, and the roller brush motor are all connected.

[0020] In some embodiments, a first control valve is provided on the oil connection line between the first oil pump and the roller brush motor, a second control valve is provided on the oil connection line between the second oil pump and the roller brush motor, and a third control valve is provided on the oil connection line between the third oil pump and the roller brush motor.

[0021] The control unit is further configured to:

[0022] When the snow removal roller brush is in the standard operating mode, the first control valve is connected, and the oil ports between the second and third control valves and the roller brush motor are disconnected.

[0023] In some embodiments, the control unit is further configured to:

[0024] When the snow removal roller brush is required to operate in medium speed mode, the first control valve is connected, the oil port between the third control valve and the roller brush motor is connected, and the oil port between the second control valve and the roller brush motor is disconnected.

[0025] In some embodiments, the snowplow further includes:

[0026] Spreader:

[0027] A spreader drive unit drives the spreader to work, and the spreader drive unit and the second oil pump are connected by an oil circuit; the second control valve has two oil supply ports, and the two oil supply ports of the second control valve selectively supply oil to the spreader drive unit and the roller brush motor respectively.

[0028] In some embodiments, the control unit is further configured to:

[0029] When the snow removal roller brush is required to operate in high-speed mode, the first control valve is connected, the oil port between the second control valve and the roller brush motor is connected, and the oil port between the third control valve and the roller brush motor is disconnected.

[0030] In some embodiments, the snowplow also includes a cylinder assembly for adjusting the posture of the snowplow brush, and the third control valve has two oil supply ports, which selectively supply oil to the cylinder assembly and the brush motor, respectively.

[0031] In some embodiments, the control unit is further configured to:

[0032] When the snow removal roller brush is required to operate in ultra-high speed mode, the first control valve is connected, and the oil ports between the second control valve, the third control valve and the roller brush motor are all connected.

[0033] In some embodiments, the cylinder assembly is connected to the oil circuit of the third oil pump, and the oil circuit is provided with the third control valve; the control unit is further configured to:

[0034] Before the snow removal roller brush operation, the required operating posture of the snow removal roller brush is obtained;

[0035] Control the oil circuit connection between the cylinder assembly and the third oil pump according to the required working posture.

[0036] In some embodiments, the snow removal component is a snow shovel, and the snow removal drive component is a snow removal cylinder for driving the snow shovel to move.

[0037] Through the above technical solutions, the snowplow provided in this application embodiment has the following beneficial effects:

[0038] Existing technologies typically require matching different oil pumps to achieve different operating modes. However, this application uses a combination of multiple oil pumps with different displacements. During operation, the control unit obtains the operating mode required by the snow removal component and selects at least one oil pump to supply oil to the snow removal drive component according to the operating mode. This allows a single oil supply component system to control the snow removal component under different working conditions. The control method is simple and reliable, maintenance is simple, and the cost is lower.

[0039] Other features and advantages of the embodiments of this application will be described in detail in the following detailed description section. Attached Figure Description

[0040] The accompanying drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the following detailed description to explain the embodiments of this application, but do not constitute a limitation on the embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without any inventive effort. In the drawings:

[0041] Figure 1 This is a schematic diagram illustrating the control principle of the snowplow in this application.

[0042] Explanation of reference numerals in the attached figures

[0043] 11 First oil pump 31 Snow removal roller brush

[0044] 12 Second oil pump 32 Roller brush motor

[0045] 13 Third oil pump 41 Spreader motor

[0046] 21 First control valve 42 Spreader

[0047] 22 Second control valve 51 Hydraulic cylinder assembly

[0048] 23 Third control valve 60 Oil tank

[0049] 70 Control Unit 80 Snow Shovel Detailed Implementation

[0050] The specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this application.

[0051] The snowplow according to this application is described below with reference to the accompanying drawings.

[0052] like Figure 1As shown in the embodiments of this application, a snow removal vehicle is proposed, which includes a chassis, a snow removal assembly, a fuel supply assembly, and a control unit 70; the snow removal assembly is installed at the front end of the chassis and includes a snow removal component and a snow removal drive component connected by a drive; the fuel supply assembly is located on the chassis and includes multiple fuel pumps with different displacements; the control unit 70 is electrically connected to the multiple fuel pumps and is configured to: obtain the operating mode required by the snow removal assembly; and select at least one fuel pump to supply fuel to the snow removal drive component according to the operating mode.

[0053] The snow removal drive unit is used to drive the snow removal components to work. An oil supply assembly supplies oil to the snow removal drive unit to provide operating power. Since the snow removal components have different hydraulic oil requirements under different operating modes, existing technologies typically require different oil pumps to achieve the functions of different operating modes. However, this application uses a combination of multiple oil pumps with different displacements to achieve control of the snow removal components through a single oil supply assembly system under different working conditions. The control method is simple and reliable, maintenance is simple, and costs are lower.

[0054] In the first embodiment of this application, the snow removal component is a snow removal roller brush 31, the snow removal drive component is a roller brush motor 32, and the oil supply assembly includes a first oil pump 11, a second oil pump 12, and a third oil pump 13 connected in series. The first oil pump 11, the second oil pump 12, and the third oil pump 13 are all connected to the oil tank 60 to pump the hydraulic oil in the oil tank 60 to the corresponding connecting oil circuit. The displacement of the second oil pump 12 is greater than the displacement of the third oil pump 13 and less than the displacement of the first oil pump 11.

[0055] The control unit 70 is further configured as follows:

[0056] When the snow removal roller brush 31 is in the standard operating mode, the oil circuit between the first oil pump 11 and the roller brush motor 32 is connected.

[0057] The standard mode refers to the operation speed of the snow removal roller brush 31 being at a standard speed (e.g., 250 rpm). For example, the snow removal roller brush 31 used on municipal roads generally requires a standard speed. In this mode, the first oil pump 11 can be controlled to supply oil to the roller brush motor 32. Specifically, the oil circuit between the first oil pump 11 and the roller brush motor 32 is connected, while the oil circuits between the second oil pump 12 and the roller brush motor 32, and between the third oil pump 13 and the roller brush motor 32 are disconnected. In this way, only the first oil pump 11 supplies oil to the roller brush motor 32, thereby enabling the selection of a small flow output under conditions of less snow accumulation and lower load, in order to achieve energy saving.

[0058] When there is heavy snow accumulation or when working on main roads, ring roads, or highways, the standard speed of the snow removal brush 31 is no longer sufficient to meet the snow removal requirements. Therefore, it is necessary to improve the working efficiency. The snow removal brush 31 can be switched to medium speed, high speed, or ultra-high speed mode by controlling the connection of the oil circuit through the control unit 70.

[0059] Specifically, in some embodiments, the control unit 70 is further configured to:

[0060] When the snow removal roller brush 31 is required to operate in medium speed mode, the oil circuits between the first oil pump 11 and the third oil pump 13 and the roller brush motor 32 are all connected.

[0061] In medium-speed mode, the snow removal roller brush 31 requires a speed of 300 rpm. However, the first oil pump 11 supplying oil to the roller brush motor 32 alone is insufficient to meet this speed requirement. Therefore, the control unit 70 connects the oil circuits between the first oil pump 11 and the roller brush motor 32, and between the third oil pump 13 and the roller brush motor 32, while disconnecting the oil circuit between the second oil pump 12 and the roller brush motor 32. Simultaneously, the first oil pump 11 and the third oil pump 13 drive the roller brush motor 32, increasing the flow rate and accelerating its speed, thus satisfying the medium-speed requirement of the snow removal roller brush 31. Therefore, a lower flow rate can be selected under conditions of low snow accumulation and light load to achieve energy savings.

[0062] In some embodiments, the control unit 70 is further configured to:

[0063] When the snow removal roller brush 31 is required to operate in high-speed mode, the oil circuit between the first oil pump 11, the second oil pump 12 and the roller brush motor 32 are connected.

[0064] In high-speed mode, the snow removal roller brush 31 requires a rotational speed of about 400 rpm. At this time, the control unit 70 controls the first oil pump 11 and the second oil pump 12 to supply oil to the roller brush motor 32 simultaneously. Specifically, the oil circuit between the first oil pump 11 and the roller brush motor 32, and between the second oil pump 12 and the roller brush motor 32, is connected. This increases the flow rate of the oil supply circuit to the roller brush motor 32, thereby increasing the rotational speed of the roller brush motor 32 and meeting the high-speed mode rotational speed requirement of the snow removal roller brush 31.

[0065] In some embodiments, the control unit 70 is further configured to:

[0066] When the snow removal roller brush 31 is in the ultra-high speed mode, the oil circuits between the first oil pump 11, the second oil pump 12, and the third oil pump 13 and the roller brush motor 32 are all connected.

[0067] In the ultra-high speed mode, the snow removal roller brush 31 requires an operating speed of about 500 rpm. In this operating mode, the roller brush motor 32 requires the highest speed. Therefore, it is necessary to control the first oil pump 11, the second oil pump 12, and the third oil pump 13 to supply oil to the roller brush motor 32 simultaneously. Specifically, the control unit 70 controls the oil circuits between the first oil pump 11 and the roller brush motor 32, between the second oil pump 12 and the roller brush motor 32, and between the third oil pump 13 and the roller brush motor 32 to be connected. This allows the flow rate of the oil supply circuit of the roller brush motor 32 to reach the maximum, thereby meeting the speed requirements of the snow removal roller brush in the ultra-high speed mode.

[0068] To achieve the switching of the four speed modes mentioned above, control valves need to be installed in the oil lines connecting each oil pump and the roller brush motor 32. The control unit 70 then controls the opening and closing of each control valve to regulate the oil line connection. Specifically, a first control valve 21 is installed in the oil line connecting the first oil pump 11 and the roller brush motor 32; a second control valve 22 is installed in the oil line connecting the second oil pump 12 and the roller brush motor 32; and a third control valve 23 is installed in the oil line connecting the third oil pump 13 and the roller brush motor 32.

[0069] In some embodiments, the snowplow also includes a spreader 42, a spreader drive, and a cylinder assembly 51. The spreader drive is used to drive the spreader 42, and the spreader drive is connected to the second oil pump 12 by an oil circuit. The cylinder assembly 51 is used to adjust the posture of the snowplow brush 31. The second control valve 22 and the third control valve 23 each have two oil supply ports. The two oil supply ports of the second control valve 22 selectively supply oil to the spreader drive and the brush motor 32, respectively, and the two oil supply ports of the third control valve 23 selectively supply oil to the cylinder assembly 51 and the brush motor 32, respectively. The spreader drive is the spreader motor 41. The cylinder assembly 51 is connected to the third oil pump 13 by an oil circuit, and the third control valve 23 is provided on the oil circuit.

[0070] The first control valve 21 has a port that supplies oil only to the roller brush motor 32. Controlling the opening and closing of this port controls the oil flow between the first oil pump 11 and the roller brush motor 32. The second control valve 22 and the third control valve 23 each have two oil supply ports. One port of the second control valve 22 is connected to the roller brush motor 32, and the other port is connected to the spreader motor 41. Switching the ports of the second control valve 22 allows oil to be supplied to either the spreader motor 41 or the roller brush motor 32. Similarly, one port of the third control valve 23 is connected to the roller brush motor 32, and the other port is connected to the cylinder assembly 51. Switching the ports of the third control valve 23 allows oil to be supplied to either the roller brush motor 32 or the cylinder assembly 51.

[0071] Specifically, in the four speed modes of the snow removal roller brush 31, the connection status of each control valve is controlled by the control unit 70:

[0072] When the snow removal roller brush 31 is in the standard mode, the first control valve 21 is connected, and the oil ports between the second control valve 22 and the third control valve 23 and the roller brush motor 32 are disconnected.

[0073] When the snow removal roller brush 31 is required to operate in medium speed mode, the first control valve 21 is connected, the oil port between the third control valve 23 and the roller brush motor 32 is connected, and the oil port between the second control valve 22 and the roller brush motor 32 is disconnected.

[0074] When the snow removal roller brush 31 is required to operate in high-speed mode, the first control valve 21 is connected, the oil port between the second control valve 22 and the roller brush motor 32 is connected, and the oil port between the third control valve 23 and the roller brush motor 32 is disconnected.

[0075] When the snow removal roller brush 31 is required to operate in the ultra-high speed mode, the first control valve 21 is connected, and the oil ports between the second control valve 22, the third control valve 23 and the roller brush motor 32 are all connected.

[0076] Furthermore, in some embodiments, the control unit 70 is further configured to:

[0077] Before the snow removal roller brush 31 starts working, obtain the working posture required by the snow removal roller brush 31;

[0078] Control the oil circuit connection between the hydraulic cylinder assembly 51 and the third oil pump 13 according to the required working posture.

[0079] Before the snow removal roller brush 31 operates, it needs to be adjusted to a suitable working position using the hydraulic cylinder assembly 51 installed on it. Specifically, at this time, the oil circuits between the first oil pump 11 and the roller brush motor 32, and between the second oil pump 12 and the roller brush motor 32 are disconnected, and the oil circuit between the third oil pump 13 and the roller brush motor 32 is also disconnected. Simultaneously, the oil supply port of the hydraulic cylinder assembly 51 and the third oil pump 13 are connected, allowing the third oil pump 13 to supply oil to the hydraulic cylinder assembly 51 to drive it. After the working position adjustment is completed, the hydraulic oil from the third oil pump 13 can be recovered and used to supply oil to the roller brush motor 32 to save energy.

[0080] In the second embodiment of this application, the snow removal component installed at the front end of the chassis can be a snowplow 80, and the snow removal drive component is a snow removal cylinder for driving the snowplow 80 to move. When the snowplow 80 is used for snow removal, the cylinder assembly 51 is a snow removal cylinder, and only the third oil pump 13 needs to be used to supply oil to the snow removal cylinder during operation, without needing to adjust the speed of the snowplow 80. Therefore, different snow removal components can be installed according to different needs to meet different operational requirements during snow removal operations, and no limitation is made here.

[0081] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0082] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0083] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0084] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A snowplow, characterized in that, The snowplow includes: Chassis; A snow removal assembly is installed at the front end of the chassis. The snow removal assembly includes a snow removal component and a snow removal drive component connected by a drive. The snow removal component is a snow removal roller brush (31), and the snow removal drive component is a roller brush motor (32). An oil supply assembly, mounted on the chassis, includes multiple oil pumps of different displacements. The oil supply assembly comprises a first oil pump (11), a second oil pump (12), and a third oil pump (13) connected in series. The displacement of the second oil pump (12) is greater than that of the third oil pump (13). The control unit (70) is electrically connected to all of the oil pumps and is configured to: Obtain the operating mode required for the snow removal component; According to the operating mode, at least one of the oil pumps is selected to supply oil to the snow removal drive unit; When the required operating mode of the snow removal roller brush (31) is the standard mode, the oil circuit between the first oil pump (11) and the roller brush motor (32) is connected, and the oil circuit between the second oil pump (12) and the roller brush motor (32) and the third oil pump (13) and the roller brush motor (32) are disconnected. Only the first oil pump (11) supplies oil to the roller brush motor (32). When the required operating mode of the snow removal roller brush (31) is medium speed mode, the oil circuits between the first oil pump (11) and the third oil pump (13) and the roller brush motor (32) are connected, the oil circuit between the second oil pump (12) and the roller brush motor (32) is disconnected, and the first oil pump (11) and the third oil pump (13) simultaneously drive the roller brush motor (32) to work; When the snow removal roller brush (31) requires a high-speed mode, the oil circuits between the first oil pump (11) and the second oil pump (12) and the roller brush motor (32) are connected, while the oil circuit between the third oil pump (13) and the roller brush motor (32) is disconnected. The first oil pump (11) and the second oil pump (12) simultaneously drive the roller brush motor (32) to work. When the snow removal roller brush (31) is required to operate in the ultra-high speed mode, the oil circuits between the first oil pump (11), the second oil pump (12), the third oil pump (13), and the roller brush motor (32) are all connected.

2. The snowplow according to claim 1, characterized in that, A first control valve (21) is provided on the connecting oil line between the first oil pump (11) and the roller brush motor (32), a second control valve (22) is provided on the connecting oil line between the second oil pump (12) and the roller brush motor (32), and a third control valve (23) is provided on the connecting oil line between the third oil pump (13) and the roller brush motor (32). The control unit (70) is further configured to: When the snow removal roller brush (31) is in the standard mode, the first control valve (21) is connected, and the oil ports between the second control valve (22) and the third control valve (23) and the roller brush motor (32) are disconnected.

3. The snowplow according to claim 2, characterized in that, The control unit (70) is further configured to: When the snow removal roller brush (31) is required to operate in medium speed mode, the first control valve (21) is connected, the oil port between the third control valve (23) and the roller brush motor (32) is connected, and the oil port between the second control valve (22) and the roller brush motor (32) is disconnected.

4. The snowplow according to claim 2, characterized in that, The snowplow also includes: Spreader (42); The spreader drive unit drives the spreader (42) to work, and the spreader drive unit and the second oil pump (12) are connected by an oil circuit; the second control valve (22) has two oil supply ports, and the two oil supply ports of the second control valve (22) selectively supply oil to the spreader drive unit and the roller brush motor (32) respectively.

5. The snowplow according to claim 4, characterized in that, The control unit (70) is further configured to: When the snow removal roller brush (31) is required to operate in high-speed mode, the first control valve (21) is connected, the oil port between the second control valve (22) and the roller brush motor (32) is connected, and the oil port between the third control valve (23) and the roller brush motor (32) is disconnected.

6. The snowplow according to claim 2, characterized in that, The snowplow also includes a cylinder assembly (51) for adjusting the posture of the snowplow brush (31), and the third control valve (23) has two oil supply ports, which selectively supply oil to the cylinder assembly (51) and the brush motor (32).

7. The snowplow according to claim 6, characterized in that, The control unit (70) is further configured to: When the snow removal roller brush (31) is required to operate in the ultra-high speed mode, the first control valve (21) is connected, and the oil ports between the second control valve (22), the third control valve (23) and the roller brush motor (32) are all connected.

8. The snowplow according to claim 6, characterized in that, The cylinder assembly (51) is connected to the third oil pump (13) via an oil circuit and the third control valve (23) is provided on the oil circuit. The control unit (70) is further configured to: Before the snow removal roller (31) operates, the required operating posture of the snow removal roller (31) is obtained; Control the oil circuit connection between the cylinder assembly (51) and the third oil pump (13) according to the required working posture.

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