Rear walk behind working machine

Abstract

The application discloses a rear walking type working machine, which comprises a walking assembly, a working assembly and a parking module. The walking assembly comprises a walking wheel set and a walking motor for driving the walking wheel set. The walking wheel set comprises an axle and wheels arranged on the axle. The working assembly comprises a working accessory and a working motor for driving the working accessory. The parking module is configured to apply a braking force to the axle. When parking is needed, the axle is braked by the parking module, and the operation structure is simple, facilitating quick and convenient parking.

Description

Technical Field

[0001] This application relates to a power tool, specifically a rear-walking working machine. Background Technology

[0002] One type of rear-walking work machine in the related technology is a double-disc lawnmower with a parking mechanism. The parking trigger is located on the right side of the control lever and is mechanically interlocked with the self-propelled lever. When parking is required, the self-propelled lever must be released before the parking trigger can be operated. The operation structure is complex and not convenient for quick and easy parking.

[0003] This section provides background information related to this application, which is not necessarily prior art. Summary of the Invention

[0004] One object of this application is to solve or at least alleviate some or all of the aforementioned problems. Therefore, one object of this application is to provide a rear-walking working machine.

[0005] To achieve the above objectives, this application adopts the following technical solution:

[0006] A rear-walking work machine includes: a walking assembly including a walking wheel set and a walking motor for driving the walking wheel set; the walking wheel set includes an axle and wheels disposed on the axle; a working assembly including a working attachment and a working motor for driving the working attachment; and a parking module configured to apply braking force to the axle.

[0007] In some embodiments, a transmission mechanism is also included, which is disposed between the travel motor and the travel wheel assembly, for transmitting the power of the travel motor to the travel wheel assembly.

[0008] In some embodiments, the transmission mechanism includes a gearbox, a first clutch, and a second clutch, at least one of which is disposed outside the gearbox.

[0009] In some embodiments, the first clutch is located outside the gearbox, and the parking module is located between the first clutch and the first wheel.

[0010] In some embodiments, the transmission mechanism includes a gearbox, a first clutch, and a second clutch, both of which are located inside the gearbox.

[0011] In some embodiments, the parking module is disposed between the gearbox and the first wheel; or, the parking module is disposed between the gearbox and the second wheel.

[0012] In some embodiments, the parking module includes an operating element configured for user operation to apply braking force to the axle or output a wheel brake signal.

[0013] In some embodiments, the parking module further includes a parking switch, and the operating element is configured to trigger the parking switch to output a stop signal or a power-off signal to the travel motor.

[0014] In some embodiments, the parking module further includes a friction pad, and the operating element is configured to force the friction pad to press against a brake disc disposed on the axle.

[0015] In some embodiments, the parking module further includes an electromagnetic braking mechanism, which is used to perform a parking action to lock the axle according to the wheel set braking signal.

[0016] In some embodiments, the working attachments include a lawn mowing assembly or a snow sweeping assembly.

[0017] In some embodiments, the working attachment includes a mowing assembly, and the walk-behind machine also includes a power supply assembly for supplying power to the working motor and the walking motor, and the walk-behind machine weighs 45 kg or more.

[0018] A rear-walking work machine includes: a walking assembly including a walking wheel set and a drive assembly for driving the walking wheel set; the walking wheel set includes at least a first wheel and a second wheel; a transmission mechanism including a gearbox disposed on a first power transmission path between the drive assembly and the first wheel to realize transmission and a first clutch, the first clutch being configured to disconnect or engage the first power transmission path; a parking module configured to apply braking force to the walking assembly; the first clutch being disposed on the outside of the gearbox.

[0019] In some embodiments, the parking module is disposed between the first clutch and the first wheel, and the parking module is used to apply braking force to the first axle where the first wheel is located.

[0020] In some embodiments, the parking module includes an operating element configured for user operation to apply braking force to the first axle and / or output a wheel brake signal.

[0021] In some embodiments, the drive component includes a travel motor, and the parking module further includes a parking switch. The operating element is configured to trigger the parking switch to output a stop signal or a power-off signal to the travel motor.

[0022] In some embodiments, a controller and a self-propelled switch are also included, the self-propelled switch being triggered to output a start signal to the travel motor; the controller is configured to control the travel motor to stop based on the output signals of the parking switch and / or the self-propelled switch.

[0023] In some embodiments, the parking module further includes a friction pad, and the actuation element is configured to force the friction pad to press against a brake disc disposed on a first axle.

[0024] In some embodiments, the parking module further includes an electromagnetic braking mechanism for performing a parking action to lock the first axle based on a wheel assembly braking signal.

[0025] In some embodiments, a first clutch is disposed on a first axle, a gearbox is disposed on a second axle where the second wheel is located, the second axle is coaxial with the first axle, and a limit pin is disposed on the second axle, the limit pin being located in the limit groove of the first clutch.

[0026] In some embodiments, the transmission mechanism further includes a second clutch disposed on a second power transmission path between the drive assembly and the second wheel to achieve transmission, the second clutch being configured to disengage or engage the second power transmission path.

[0027] In some embodiments, the walk-behind machine further includes a mowing assembly, a power supply assembly, and a working motor for driving the mowing assembly. The power supply assembly supplies power to the working motor. The walk-behind machine weighs 45 kg or more.

[0028] A rear-walking work machine includes: a walking assembly including a set of walking wheels and a walking motor for driving the walking wheels; a handle device including a grip for a user to hold and a self-propelled switch; the self-propelled switch can be triggered to output a start signal to the walking motor; and a parking module including an operating element and a parking switch, the operating element being configured for user operation to apply braking force to the walking wheels or output a wheel braking signal, and the parking switch being triggered to output a stop signal or a power-off signal to the walking motor.

[0029] In some embodiments, a controller is also included, which is configured to control the travel motor to stop based on the output signal of the parking switch.

[0030] In some embodiments, a controller is also included, which is configured to control the walking motor to stop based on the output signals of the parking switch and the self-propelled switch.

[0031] In some embodiments, the parking switch is in the triggered state and the self-propelled switch is in the closed state, and the travel motor stops.

[0032] In some embodiments, the parking switch is triggered by an operating element to output a stop signal or a power-off signal to the travel motor.

[0033] In some embodiments, the parking switch is a signal switch.

[0034] In some embodiments, the parking module further includes a friction pad, and the operating element is configured to force the friction pad to press against a brake disc disposed on the axle of the travel wheel assembly.

[0035] In some embodiments, the parking module further includes an electromagnetic braking mechanism, which is used to perform a parking action to lock the axle of the traveling wheelset according to the wheel set braking signal.

[0036] In some embodiments, the walk-behind machine further includes a mowing assembly, a power supply assembly, and a working motor for driving the mowing assembly. The power supply assembly supplies power to the working motor and the walk motor. The walk-behind machine weighs 45 kg or more.

[0037] A rear-walking work machine includes: a walking assembly including a set of walking wheels and a walking motor for driving the set of walking wheels; a grip for a user to grip and operate the rear-walking work machine to walk; a self-propelled switch configured to output a start signal to the walking motor; and a parking module configured to be operated by the user to apply braking force to the set of walking wheels or output a braking signal to the set of walking wheels, and further configured to output a stop signal or a power-off signal to the walking motor.

[0038] In some embodiments, the parking module includes an operating element and a parking switch. The operating element is configured for user operation to apply braking force to the travel wheelset or output a wheelset braking signal, and the parking switch is used to output a stop signal or a power-off signal to the travel motor.

[0039] In some embodiments, the parking switch is triggered by an operating element to output a stop signal or a power-off signal to the travel motor.

[0040] A rear-walking work machine includes: a walking assembly, including a set of walking wheels and a walking motor for driving the walking wheels; the walking wheels include at least a first wheel and a second wheel; a handle device, including a grip for a user to hold and a self-propelled switch; the self-propelled switch is used to output a start signal to the walking motor; there are two walking motors, namely a first walking motor and a second walking motor, the first walking motor is used to drive the first wheel, and the second walking motor is used to drive the second wheel; a parking module is used to output braking force or a wheel braking signal to brake the first wheel or the second wheel.

[0041] In some embodiments, the first travel motor is a hub motor or a wheel-side motor, and the second travel motor is a hub motor or a wheel-side motor.

[0042] In some embodiments, the parking module is disposed between the first travel motor and the first wheel.

[0043] In some embodiments, the parking module includes an operating element configured for user operation to apply braking force to the traveling wheelset or output a wheelset braking signal.

[0044] In some embodiments, the parking module further includes a parking switch, which is triggered by an operating element to output a stop signal or a power-off signal to the travel motor.

[0045] In some embodiments, the parking module further includes a friction pad, and the operating element is configured to force the friction pad to press against a brake disc disposed on the axle of the travel wheel assembly.

[0046] In some embodiments, the parking module further includes an electromagnetic braking mechanism, which is used to perform a parking action to lock the axle of the traveling wheelset according to the wheel set braking signal.

[0047] In some embodiments, the walk-behind machine further includes a mowing assembly, a power supply assembly, and a working motor for driving the mowing assembly. The power supply assembly supplies power to the working motor and the walk motor. The walk-behind machine weighs 45 kg or more.

[0048] The advantages of this application are: the axle is used to support the wheels, and when parking is required, the axle is braked by the parking module. The operation structure is simple and facilitates quick and convenient parking. Attached Figure Description

[0049] Figure 1 This is a first structural schematic diagram of the rear-walking working machine provided in this application;

[0050] Figure 2 This is a schematic diagram of the second structure of the rear-walking working machine provided in this application;

[0051] Figure 3 This is a partial structural schematic diagram of the rear-walking working machine provided in this application;

[0052] Figure 4 This is a structural schematic diagram of the walking component, parking module, and transmission mechanism provided in this application;

[0053] Figure 5 This is a structural schematic diagram of the parking module and transmission mechanism provided in this application;

[0054] Figure 6 This is a cross-sectional view of the walking component, parking module, and transmission mechanism provided in this application;

[0055] Figure 7 This is a partial structural cross-sectional view of the walking component, parking module, and transmission mechanism provided in this application;

[0056] Figure 8 This is a partial structural schematic diagram of the parking module provided in this application;

[0057] Figure 9 This is a schematic diagram of the operating components of the parking module provided in this application in the parking position;

[0058] Figure 10 This is a schematic diagram of the parking module's operating components in the unlocked position, as provided in this application.

[0059] Figure 11 This is a first structural schematic diagram of the second axle, the limiting pin, and the first clutch provided in this application;

[0060] Figure 12 This is a first side view of the second axle, the limiting pin, and the first clutch provided in this application;

[0061] Figure 13 This is a second structural schematic diagram of the second axle, the limiting pin, and the first clutch provided in this application;

[0062] Figure 14 This is a second side view of the second axle, the limiting pin, and the first clutch provided in this application;

[0063] Figure 15 This is a schematic diagram showing that both the first clutch and the second clutch provided in this application are located inside the gearbox;

[0064] Figure 16 This is a structural schematic diagram of the wire rope, connector, cable tray, and pressure plate provided in this application;

[0065] Figure 17 This is a schematic diagram of the structure of the steel wire rope and the housing provided in this application;

[0066] Figure 18 This is a partial structural diagram of the wire rope, connector, cable tray, and pressure plate provided in this application.

[0067] In the picture:

[0068] 100. Body; 110. Housing; 120. Maintenance cover; 130. Cable tray; 140. Pressure plate;

[0069] 200. Walking assembly; 210. Walking wheel set; 211. Axle; 2111. First axle; 2112. Second axle; 212. Wheel; 2121. First wheel; 2122. Second wheel; 220. Walking motor;

[0070] 300. Working components; 310. Working accessories; 320. Working motor;

[0071] 400. Handle device; 410. Grip part; 420. Self-propelled switch; 430. Connecting rod;

[0072] 500 Parking module; 510 Operating component; 520 Operating box; 530 Parking switch; 540 Steel wire rope; 550 Friction pad; 560 Brake disc; 570 Paddle shifter; 580 Pin; 590 Connector; 591 First connector; 592 Second connector;

[0073] 600. Transmission mechanism; 610. Gearbox; 620. First clutch; 621. Limiting groove; 6211. Step; 6212. Arc portion; 630. Outer shell; 631. Housing; 632. Shell cover; 640. Limiting pin;

[0074] 700. Power supply components. Detailed Implementation

[0075] Before explaining any implementation of this application in detail, it should be understood that this application is not limited to its application to the structural details and component arrangements set forth in the following description or shown in the above drawings.

[0076] In this application, the terms "comprising," "including," "having," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0077] In this application, the term "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this application generally indicates that the preceding and following related objects have an "and / or" relationship.

[0078] In this application, the terms "connection," "combination," "coupling," and "installation" can refer to direct connection, combination, coupling, or installation, or indirect connection, combination, coupling, or installation. For example, a direct connection refers to two parts or components being connected together without the need for an intermediary, while an indirect connection refers to two parts or components each being connected to at least one intermediary, with the connection achieved through the intermediary. Furthermore, "connection" and "coupling" are not limited to physical or mechanical connections or couplings, but can also include electrical connections or couplings.

[0079] In this application, those skilled in the art will understand that relative terms (e.g., “about,” “approximately,” “basically,” etc.) used in conjunction with quantities or conditions are to include the values ​​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 associated with the particular value due to manufacturing, assembly, use, etc. Such terms should also be considered as disclosing a range defined by the absolute values ​​of the two endpoints. Relative terms may refer to a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value. Numerical values ​​not using relative terms should also be disclosed as specific values ​​with tolerances. Furthermore, “basically” when expressing relative angular relationships (e.g., substantially parallel, substantially perpendicular) may refer to a certain degree (e.g., 1 degree, 5 degrees, 10 degrees or more) added to or subtracted from the indicated angle.

[0080] In this application, those skilled in the art will understand that the function performed by a component can be performed by one component, multiple components, one part, or multiple parts. Similarly, the function performed by a part can also be performed by one part, one component, or a combination of multiple parts.

[0081] In this application, the directional terms "upper," "lower," "left," "right," "front," and "rear" are used to describe the orientation and positional relationships shown in the accompanying drawings and should not be construed as limiting the embodiments of this application. Furthermore, in the context, it should be understood that when an element is mentioned as being connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected through an intermediate element. It should also be understood that directional terms such as upper side, lower side, left side, right side, front side, and rear side not only represent positive orientation but can also be understood as lateral orientation. For example, "below" can include directly below, lower left, lower right, lower front, and lower rear.

[0082] In this application, the terms "controller," "processor," "central processing unit," "CPU," and "MCU" are used interchangeably. When using the unit "controller," "processor," "central processing unit," "CPU," or "MCU" to perform a specific function, unless otherwise stated, these functions may be performed by a single or multiple of the aforementioned units.

[0083] In this application, the terms "device," "module," or "unit" are used to describe devices that can be implemented in hardware or software to perform a specific function.

[0084] In this application, the terms “calculation,” “judgment,” “control,” “determine,” “identify,” etc., refer to the operation and process of a computer system or similar electronic computing device (e.g., controller, processor, etc.).

[0085] In different embodiments of this application, the same or corresponding components are referred to by the same reference numerals.

[0086] The rear-walking work machine provided in this application can be a lawnmower, snowplow, push multi-head tool, or other rear-walking equipment. See also Figures 1 to 18 Taking a lawnmower as an example of a rear-walking work machine, the rear-walking work machine includes a body 100 and a walking assembly 200, a working assembly 300, and a handle device 400 connected to the body 100.

[0087] The walking assembly 200 includes a walking wheel set 210 and a drive assembly for driving the walking wheel set 210. The walking wheel set 210 includes an axle 211 and wheels 212 disposed on the axle 211. The number of wheels 212 can be set according to actual needs. Exemplarily, four wheels 212 are provided, which are divided into two front wheels and two rear wheels. Exemplarily, the walking wheel set 210 includes at least a first wheel 2121 and a second wheel 2122. Both the first wheel 2121 and the second wheel 2122 are rear wheels, which serve as drive wheels for driving the rear-walking machine to move.

[0088] In some embodiments, the first wheel 2121 and the second wheel 2122 share a common axle 211. In some embodiments, the first wheel 2121 is disposed on the first axle 2111, and the second wheel is disposed on the second axle 2112. The first axle 2111 and the second axle 2112 are connected in a transmission manner, or the first axle 2111 and the second axle 2112 are disposed separately.

[0089] The working assembly 300 includes a working attachment 310 and a working motor 320 for driving the working attachment 310. In some embodiments, the working attachment 310 includes a lawn mowing assembly. In some embodiments, the working attachment 310 includes a snow sweeping assembly. See also Figure 2 The lawn mowing assembly features a dual-blade disc structure.

[0090] In some embodiments, the drive assembly includes a travel motor 220, which is separately configured from the working motor 320, meaning that the travel wheel set 210 and the working attachment 310 are driven separately. In some embodiments, the drive assembly is a transmission assembly, and the working motor 320 drives the travel wheel set 210 through the transmission assembly, meaning that the travel wheel set 210 and the working attachment 310 share the working motor 320.

[0091] In some embodiments, the first wheel 2121 and the second wheel 2122 share a single drive motor 220. For example, the first axle 2111 and the second axle 2112 are interconnected, and the drive motor 220 drives either the first axle 2111 or the second axle 2112 to rotate. In some embodiments, two drive motors 220 are provided: one drive motor 220 drives the first wheel 2121, and the other drive motor 220 drives the second wheel 2122.

[0092] A handle device 400 is located on the rear side of the machine body 100. The handle device 400 includes a gripping part 410 and a self-propelled switch 420. The gripping part 410 is for the user to grip and operate the walking machine. The self-propelled switch 420 is configured to output a start signal to the walking motor 220. Exemplarily, the self-propelled switch 420 can be triggered to output a start signal to the walking motor 220. The self-propelled switch 420 can be tossed, pressed, or rotated by the user to move between an open and closed position. Exemplarily, pressing the self-propelled switch 420 triggers it, i.e., the self-propelled switch 420 opens and outputs a start signal to the walking motor 220; pressing it again closes it.

[0093] The handle device 400 also includes a connecting rod 430, one end of which is connected to the machine body 100, and the other end of which is connected to the gripping part 410. By setting the connecting rod 430, a safe distance is maintained between the user and the machine body 100 while the user grips the gripping part 410 and moves with the walking machine, thus ensuring safety.

[0094] The rear-walking work machine also includes a parking module 500, which is configured for user operation to apply braking force to the travel wheel set 210 or output a wheel set braking signal. The parking module 500 is also configured to output a stop signal or power-off signal to the travel motor 220.

[0095] For example, the parking module 500 is configured to apply braking force to the traveling assembly 200. For example, the parking module 500 is configured to apply braking force to the axle 211. When parking is required, the parking module 500 brakes the axle 211, resulting in a simple operation structure that facilitates quick and convenient parking.

[0096] For lawnmowers, the installation position of the parking module 500 does not interfere with the outward discharge of grass from the discharge port.

[0097] For example, the parking module 500 includes an operating element 510 configured for user operation to apply braking force to the axle 211 or output a wheel brake signal. The operating element 510 can be a toggle, a press, or a rotater, and the user can operate the operating element 510 by toggle, press, or rotate it.

[0098] See Figures 8 to 10 The operating element 510 is movable between a parking position and an unlocked position. The user can manually move the operating element 510 to either the parking or unlocked position. The parking module 500 includes an operating box 520, within which some of the operating elements 510 are housed. The operating box 520 is connected to the handle device 400. See also... Figure 1 and Figure 2 The control box 520 is located on the right side of the handle device 400, making it convenient for the user to operate with their right hand.

[0099] In some embodiments, the parking module 500 further includes a parking switch 530, which can be triggered to output a stop signal or a power-off signal to the travel motor 220 to stop the travel motor 220.

[0100] For example, the parking switch 530 is triggered by the operating element 510, that is, the operating element 510 is configured to trigger the parking switch 530 to output a stop signal or a power-off signal to the travel motor 220. When the operating element 510 moves from the unlocked position to the parking position, the operating element 510 triggers the parking switch 530; when the operating element 510 moves from the parking position to the unlocked position, the parking switch 530 is in a non-triggered state, that is, the parking switch 530 is off.

[0101] For example, the parking switch 530 is set in either the parking position or the unlocked position. When the operating member 510 moves from the unlocked position to the parking position, the operating member 510 triggers the parking switch 530, and the display shows P gear. When the operating member 510 moves from the parking position to the unlocked position, the parking switch 530 is in a non-triggered state, and the display shows D gear or no display.

[0102] For example, the parking switch 530 is located on the control panel or chassis, and the user can manually trigger the parking switch 530.

[0103] The parking switch 530 has the highest priority. When the parking switch 530 is off, the travel motor 220 will stop running regardless of whether the self-propelled switch 420 is open or closed. By setting the parking switch 530 to a position that can be triggered by the operating element 510, in an emergency, the user does not need to turn off the self-propelled switch 420; pulling the operating element 510 will trigger the parking switch 530, thus outputting a stop signal or power-off signal to the travel motor 220.

[0104] The parking module 500 also includes a wire rope 540, one end of which is connected to the operating element 510, and the other end of which is used to achieve mechanical parking. Therefore, when the user pulls the operating element 510 to the parking position, it not only triggers the parking switch 530 to output a stop signal or power-off signal to the travel motor 220, but also achieves mechanical parking.

[0105] In some embodiments, see Figure 6 and Figure 7 The parking module 500 also includes a friction pad 550, and an operating member 510 is configured to force the friction pad 550 to press against a brake disc 560, which is mounted on the axle 211. By pressing the brake disc 560 against the friction pad 550, the brake disc 560 stops rotating, and since the brake disc 560 is mounted on the axle 211, the axle 211 also stops rotating.

[0106] Exemplarily, the end of the wire rope 540 away from the operating member 510 is connected to a paddle 570, which is sleeved on a pin 580. When the user pulls the operating member 510, the wire rope 540 causes the paddle 570 to rotate along the pin 580, forcing the friction pad 550 to press against the brake disc 560. Exemplarily, the brake disc 560 is mounted on the first axle 2111.

[0107] For example, the end of the wire rope 540 away from the operating member 510 is connected to a lever 570, which is sleeved on the pin 580. When the user pulls the operating member 510, the lever 570 can be rotated along the pin 580 via the wire rope 540, thereby forcing the locking pin to move and lock the first axle 2111.

[0108] The chassis 100 includes a housing 110, and a portion of the parking module 500 is disposed within the housing 110. For example, see [link to example]. Figure 1 , Figures 16 to 18 Part of the steel wire rope 540 enters the housing 110 along the bottom of the maintenance cover 120 of the machine body 100 and extends in the wiring trough 130 inside the housing 110 to avoid components such as circuit boards. Along the extension direction of the wiring trough 130, a plurality of pressure plates 140 are provided, which are connected to the housing 110 and press the wiring trough 130.

[0109] In some embodiments, the wire rope 540 is provided with at least two segments, and adjacent segments of the wire rope 540 are detachably connected by a joint 590. The joint 590 facilitates installation, maintenance, and commissioning. Optionally, the joint 590 includes a detachably connected first joint portion 591 and a second joint portion 592. The first joint portion 591 connects to one segment of the wire rope 540, and the second joint portion 592 connects to the other segment of the wire rope 540. The first joint portion 591 and the second joint portion 592 can be connected by threads.

[0110] In some embodiments, the parking module 500 further includes an electromagnetic braking mechanism for performing a parking action to lock the axle 211 based on a wheel braking signal. Exemplarily, the electromagnetic braking mechanism is de-energized after receiving the wheel braking signal, causing a friction element to actuate and lock the axle 211, thus achieving braking. The friction element may be a drum brake. Actuation of the friction element can lock the first axle 2111.

[0111] The rear-walking work machine also includes a transmission mechanism 600, which is located between the travel motor 220 and the travel wheel set 210, and is used to transmit power from the travel motor 220 to the travel wheel set 210. To achieve differential speed, clutch modules are generally installed on both the left and right wheels.

[0112] In some embodiments, the transmission mechanism 600 includes a gearbox 610 and a first clutch 620 disposed on a first power transmission path between the travel motor 220 and the first wheel 2121 to realize transmission. The first clutch 620 is configured to disengage or engage the first power transmission path. When the first clutch 620 disengages the first power transmission path, the power of the travel motor 220 cannot be transmitted to the first wheel 2121; when the first clutch 620 engages the first power transmission path, the power of the travel motor 220 can be transmitted to the first wheel 2121.

[0113] The transmission mechanism 600 also includes a second clutch disposed on a second power transmission path between the travel motor 220 and the second wheel 2122 to realize transmission. The second clutch is configured to disengage or engage the second power transmission path. When the second clutch disengages the second power transmission path, the power of the travel motor 220 cannot be transmitted to the second wheel 2122; when the second clutch engages the second power transmission path, the power of the travel motor 220 can be transmitted to the second wheel 2122.

[0114] For example, at least one of the first clutch 620 and the second clutch is located on the outside of the gearbox 610. Compared to placing the clutch inside the gearbox 610, this facilitates maintenance, reduces the size of the gearbox 610, and reduces space occupation.

[0115] In this embodiment, the first clutch 620 is disposed on the outside of the gearbox 610, and the parking module 500 is disposed between the first clutch 620 and the first wheel 2121. The parking module 500 is used to apply braking force to the first axle 2111 where the first wheel 2121 is located. The second clutch may be disposed at the second wheel 2122.

[0116] Exemplarily, the gearbox 610 includes a housing with an openable cover for easy installation of gears and other components inside the gearbox 610. A first clutch 620 is disposed within a housing 630, which includes a detachable housing 631 and a cover 632. The cover 632 is openable for easy installation of the first clutch 620 into the housing 630. Exemplarily, the cover 632 and the housing 631 are fastened together by a plurality of screws. During installation, the through hole on the cover 632 is first aligned with the threaded hole on the housing 631, and then the screws are passed through the through hole and threaded into the threaded hole to achieve locking.

[0117] See Figures 4 to 14 The first clutch 620 is located on the first axle 2111, and the gearbox 610 is located on the second axle 2112 where the second wheel 2122 is located. The second axle 2112 is coaxially arranged with the first axle 2111. A limit pin 640 is provided on the second axle 2112, and the limit pin 640 is located in the limit groove 621 of the first clutch 620.

[0118] The operating element 510 is configured for user operation to apply braking force to the first axle 2111 and / or output a wheel brake signal. After the first axle 2111 is braked, the braking force can be transmitted to the second axle 2112 through the limit pin 640, thereby causing the second axle 2112 to brake.

[0119] During normal self-propelled operation, the self-propelled switch 420 is turned on, the operating component 510 is in the unlocked position, the travel motor 220 starts, and drives the second axle 2112 to rotate via the gearbox 610. The direction of rotation is as follows: Figure 12 In a clockwise direction, the limiting pin 640 on the second axle 2112 rotates until it abuts against the step 6211 in the limiting groove 621 of the first clutch 620, as the second axle 2112 rotates. Figure 12 As shown, this drives the first clutch 620 to rotate, thereby enabling the first axle 2111 and the second axle 2112 to rotate synchronously, and thus enabling the first wheel 2121 and the second wheel 2122 to move on their own.

[0120] When parking is required, the user moves the operating component 510 to the parking position. During this movement, the operating component 510 drives the paddle 570 to rotate along the pin 580 via the wire rope 540, forcing the friction plate 550 to press against the brake disc 560. Since the brake disc 560 is splined to the first axle 2111, stopping the brake disc 560 causes the first axle 2111 to stop rotating. The stopping of the first axle 2111 causes the first clutch 620 to stop rotating. Because the limiting pin 640 abuts against the step 6211 in the limiting groove 621 of the first clutch 620, as... Figure 13As shown, the first clutch 620 stops rotating, which forces the travel motor 220 to stall and stop for protection.

[0121] In some embodiments, when the operating member 510 moves to the parking position, it can trigger the parking switch 530. The parking switch 530 outputs a stop signal or a power-off signal to the travel motor 220 to stop the travel motor 220, so that electronic stopping and mechanical parking can be performed simultaneously to ensure parking stability.

[0122] When the second axle 2112 rotates counterclockwise, the direction of rotation is... Figure 14 In the counterclockwise direction, the limiting pin 640 on the second axle 2112 rotates with the second axle 2112 and slides along the arc portion 6212 in the limiting groove 621 of the first clutch 620. The limiting effect of the arc portion 6212 causes the limiting pin 640 to move radially along the second axle 2112. Therefore, when the travel motor 220 drives the second axle 2112 to rotate counterclockwise, the power will not be transmitted to the first axle 2111, and steering and other operations can be realized.

[0123] The rear-walking work machine also includes a controller configured to stop the motor based on the output signals of the parking switch 530 and / or the self-propelled switch 420. In some embodiments, the controller is configured to stop the travel motor 220 based on the output signal of the parking switch 530. When the parking switch 530 is open, the travel motor 220 stops operating regardless of whether the self-propelled switch 420 is open or closed. In some embodiments, the controller is configured to stop the travel motor 220 based on the output signals of the parking switch 530 and the self-propelled switch 420. When the parking switch 530 is in the triggered state and the self-propelled switch 420 is in the closed state, the travel motor 220 stops. In some embodiments, self-propelled operation is only possible when the parking switch 530 is in the triggered state and the self-propelled switch 420 is in the open state.

[0124] In some embodiments, the parking switch 530 is a signal switch. It has a simple structure and occupies little space.

[0125] In some embodiments, there are two walking motors 220, namely a first walking motor and a second walking motor. The first walking motor is used to drive the first wheel 2121, and the second walking motor is used to drive the second wheel 2122. The parking module 500 is used to output braking force or wheel group braking signal to brake the first wheel 2121 or the second wheel 2122.

[0126] The first travel motor is a hub motor or a wheel-side motor, and the second travel motor is a hub motor or a wheel-side motor.

[0127] When there are two travel motors 220, the parking module 500 can be configured as one set or two sets. For example, one set of parking modules 500 is configured, positioned between the first travel motor and the first wheel 2121. By actuating the operating member 510 of the parking module 500, the operating member 510 moves from the unlocked position to the parking position. The steel cable 540 drives the paddle 570 to rotate, thereby forcing the friction plate 550 to press against the brake disc 560. The brake disc 560 is located on the first axle 2111. The stopping of the brake disc 560 causes the first axle 2111 to stop rotating. The stopping of the first axle 2111 causes the first clutch 620 to stop rotating. Because the limiting pin 640 abuts against the step 6211 in the limiting groove 621 of the first clutch 620, the stopping of the first clutch 620 forces the first travel motor to stall for protection and stop. Meanwhile, when the operating component 510 moves to the parking position, it can trigger the parking switch 530, which outputs a stop signal or a power-off signal to the second travel motor to stop the second travel motor.

[0128] See Figures 2 to 7 The rear-walking machine also includes a power supply assembly 700 for supplying power to the working motor 320 and the travel motor 220. The machine body 100 includes a housing 110 for housing the power supply assembly 700, which can utilize an existing battery pack. The weight of the rear-walking machine is greater than or equal to 45 kg. This weight includes the aforementioned machine body 100, travel assembly 200, working assembly 300, handle device 400, and power supply assembly 700. In some embodiments, the weight of the rear-walking machine is greater than or equal to 50 kg. In some embodiments, the weight of the rear-walking machine is greater than or equal to 60 kg. In some embodiments, the weight of the rear-walking machine is equal to 45 kg, 48 kg, 50 kg, 52 kg, or 55 kg.

[0129] In some embodiments, such as Figure 15 As shown, both the first clutch 620 and the second clutch are located inside the gearbox 610. The parking module 500 is located between the gearbox 610 and the first wheel 2121; or, the parking module 500 is located between the gearbox 610 and the second wheel 2122.

[0130] The foregoing has shown and described the basic principles, main features, and advantages of this application. Those skilled in the art should understand that the above embodiments do not limit this application in any way, and all technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of this application.

Claims

1. A rear-moving working machine, comprising: The walking assembly (200) includes a walking wheel set (210) and a walking motor (220) for driving the walking wheel set (210); the walking wheel set (210) includes an axle (211) and a wheel (212) disposed on the axle (211); The working assembly (300) includes a working attachment (310) and a working motor (320) for driving the working attachment (310); Its characteristic is that it further includes: The parking module (500) is configured to apply braking force to the axle (211).

2. The rear-walking working machine according to claim 1, characterized in that, It also includes a transmission mechanism (600), which is disposed between the walking motor (220) and the walking wheel set (210) for transmitting the power of the walking motor (220) to the walking wheel set (210).

3. The rear-walking working machine according to claim 2, characterized in that, The transmission mechanism (600) includes a gearbox (610), a first clutch (620), and a second clutch, at least one of the first clutch (620) and the second clutch being disposed on the outside of the gearbox (610).

4. The rear-walking working machine according to claim 3, characterized in that, The first clutch (620) is located on the outside of the gearbox (610), and the parking module (500) is located between the first clutch (620) and the first wheel (2121).

5. The rear-walking working machine according to claim 2, characterized in that, The transmission mechanism (600) includes a gearbox (610), a first clutch (620), and a second clutch, both of which are located inside the gearbox (610).

6. The rear-walking working machine according to claim 5, characterized in that, The parking module (500) is disposed between the gearbox (610) and the first wheel (2121); or, the parking module (500) is disposed between the gearbox (610) and the second wheel (2122).

7. The rear-walking working machine according to claim 1, characterized in that, The parking module (500) includes an operating element (510) configured for user operation to apply braking force to the axle (211) or output a wheel brake signal.

8. The rear-walking working machine according to claim 7, characterized in that, The parking module (500) also includes a parking switch (530), and the operating element (510) is configured to trigger the parking switch (530) to output a stop signal or a power-off signal to the travel motor (220).

9. The rear-walking working machine according to claim 7, characterized in that, The parking module (500) also includes a friction pad (550), and the operating element (510) is configured to force the friction pad (550) to press against a brake disc (560) disposed on the axle (211).

10. The rear-walking working machine according to claim 7, characterized in that, The parking module (500) also includes an electromagnetic braking mechanism, which is used to perform a parking action to lock the axle (211) according to the wheel set braking signal.

11. The rear-walking working machine according to claim 1, characterized in that, The working attachment (310) includes a lawn mowing assembly or a snow sweeping assembly.

12. The rear-walking working machine according to claim 1, characterized in that, The working attachment (310) includes a mowing assembly, and the rear-walking machine also includes a power supply assembly (700) for supplying power to the working motor (320) and the walking motor (220). The weight of the rear-walking machine is greater than or equal to 45 kg.

13. A rear-moving working machine, comprising: The walking assembly (200) includes a walking wheel set (210) and a drive assembly for driving the walking wheel set (210); The walking wheel assembly (210) includes at least a first wheel (2121) and a second wheel (2122); The transmission mechanism (600) includes a gearbox (610) disposed on a first power transmission path between the drive assembly and the first wheel (2121) to realize transmission and a first clutch (620) configured to disengage or engage the first power transmission path. Its characteristic is that it further includes: The parking module (500) is configured to apply braking force to the travel assembly (200); the first clutch (620) is located on the outside of the gearbox (610).

14. The rear-walking working machine according to claim 13, characterized in that, The parking module (500) is disposed between the first clutch (620) and the first wheel (2121), and the parking module (500) is used to apply braking force to the first axle (2111) where the first wheel (2121) is located.

15. The rear-walking working machine according to claim 14, characterized in that, The parking module (500) includes an operating element (510) configured for user operation to apply braking force to the first axle (2111) and / or output wheel brake signals.

16. The rear-walking working machine according to claim 15, characterized in that, The drive assembly includes a travel motor (220), the parking module (500) further includes a parking switch (530), and the operating element (510) is configured to trigger the parking switch (530) to output a stop signal or a power-off signal to the travel motor (220).

17. The rear-walking working machine according to claim 16, characterized in that, It also includes a controller and a self-propelled switch (420), which can be triggered to output a start signal to the travel motor (220); the controller is configured to control the travel motor (220) to stop based on the output signal of the parking switch (530) and / or the self-propelled switch (420).

18. The rear-walking working machine according to claim 15, characterized in that, The parking module (500) also includes a friction pad (550), and the operating element (510) is configured to force the friction pad (550) to press against a brake disc (560) disposed on the first axle (2111).

19. The rear-walking working machine according to claim 15, characterized in that, The parking module (500) also includes an electromagnetic braking mechanism, which is used to perform a parking action to lock the first axle (2111) according to the wheel set braking signal.

20. The rear-walking working machine according to claim 14, characterized in that, The first clutch (620) is disposed on the first axle (2111), and the gearbox (610) is disposed on the second axle (2112) where the second wheel (2122) is located. The second axle (2112) is coaxially disposed with the first axle (2111). A limit pin (640) is disposed on the second axle (2112), and the limit pin (640) is located in the limit groove (621) of the first clutch (620).

21. The rear-walking working machine according to claim 13, characterized in that, The transmission mechanism (600) further includes a second clutch disposed on a second power transmission path between the drive assembly and the second wheel (2122) to achieve transmission, the second clutch being configured to disengage or engage the second power transmission path.

22. The rear-walking working machine according to claim 13, characterized in that, The rear-walking machine also includes a mowing assembly, a power supply assembly (700), and a working motor (320) for driving the mowing assembly. The power supply assembly (700) supplies power to the working motor (320). The weight of the rear-walking machine is greater than or equal to 45 kg.

23. A rear-moving working machine, comprising: The walking assembly (200) includes a walking wheel set (210) and a walking motor (220) for driving the walking wheel set (210); The handle device (400) includes a gripping part (410) for a user to hold and a self-propelled switch (420); the self-propelled switch (420) can be triggered to output a start signal to the walking motor (220); Its characteristic is that it further includes: The parking module (500) includes an operating element (510) and a parking switch (530). The operating element (510) is configured for user operation to apply braking force to the travel wheelset (210) or output a wheel braking signal. The parking switch (530) can be triggered to output a stop signal or a power-off signal to the travel motor (220).

24. The rear-walking working machine according to claim 23, characterized in that, It also includes a controller configured to stop the travel motor (220) based on the output signal of the parking switch (530).

25. The rear-walking working machine according to claim 23, characterized in that, It also includes a controller configured to stop the travel motor (220) based on the output signals of the parking switch (530) and the self-propelled switch (420).

26. The rear-walking working machine according to claim 25, characterized in that, The parking switch (530) is in the triggered state, and the self-propelled switch (420) is in the closed state, and the walking motor (220) is stopped.

27. The rear-walking working machine according to claim 23, characterized in that, The parking switch (530) is triggered by the operating element (510) to output a stop signal or a power-off signal to the travel motor (220).

28. The rear-walking working machine according to claim 23, characterized in that, The parking switch (530) is a signal switch.

29. The rear-walking working machine according to claim 23, characterized in that, The parking module (500) also includes a friction pad (550), and the operating element (510) is configured to force the friction pad (550) to press against a brake disc (560), the brake disc (560) being disposed on the axle (211) of the drive wheel assembly (210).

30. The rear-walking working machine according to claim 23, characterized in that, The parking module (500) also includes an electromagnetic braking mechanism, which is used to perform a parking action according to the wheel set braking signal to lock the axle (211) of the running wheel set (210).

31. The rear-walking working machine according to claim 23, characterized in that, The rear-walking machine also includes a mowing assembly, a power supply assembly (700), and a working motor (320) for driving the mowing assembly. The power supply assembly (700) supplies power to the working motor (320) and the walking motor (220). The weight of the rear-walking machine is greater than or equal to 45 kg.

32. A rear-moving working machine, comprising: The walking assembly (200) includes a walking wheel set (210) and a walking motor (220) for driving the walking wheel set (210); The gripper (410) is provided for the user to grip and operate the walking machine to move; The self-propelled switch (420) is configured to output a start signal to the walking motor (220); Its characteristic is that it further includes: The parking module (500) is configured to be operated by a user to apply braking force to the travel wheelset (210) or output a wheel brake signal, and is also configured to output a stop signal or power-off signal to the travel motor (220).

33. The rear-walking working machine according to claim 32, characterized in that, The parking module (500) includes an operating element (510) and a parking switch (530). The operating element (510) is configured for user operation to apply braking force to the travel wheel set (210) or output a wheel set braking signal. The parking switch (530) is used to output a stop signal or a power-off signal to the travel motor (220).

34. The rear-walking working machine according to claim 33, characterized in that, The parking switch (530) is triggered by the operating element (510) to output a stop signal or a power-off signal to the travel motor (220).

35. A rear-moving working machine, comprising: The walking assembly (200) includes a walking wheel set (210) and a walking motor (220) for driving the walking wheel set (210); the walking wheel set (210) includes at least a first wheel (2121) and a second wheel (2122); The handle device (400) includes a gripping part (410) for a user to hold and a self-propelled switch (420); the self-propelled switch (420) is used to output a start signal to the walking motor (220); The feature is that there are two walking motors (220), namely a first walking motor and a second walking motor, the first walking motor is used to drive the first wheel (2121), and the second walking motor is used to drive the second wheel (2122). The rear-walking working machine also includes: The parking module (500) is used to output braking force or wheel braking signal to brake the first wheel (2121) or the second wheel (2122).

36. The rear-walking working machine according to claim 35, characterized in that, The first travel motor is a hub motor or a wheel-side motor, and the second travel motor is a hub motor or a wheel-side motor.

37. The rear-walking working machine according to claim 35, characterized in that, The parking module (500) is located between the first travel motor and the first wheel (2121).

38. The rear-walking working machine according to claim 35, characterized in that, The parking module (500) includes an operating element (510) configured for user operation to apply braking force to the travel wheelset (210) or output a wheel braking signal.

39. The rear-walking working machine according to claim 38, characterized in that, The parking module (500) also includes a parking switch (530), which is triggered by the operating element (510) to output a stop signal or a power-off signal to the travel motor (220).

40. The rear-walking working machine according to claim 38, characterized in that, The parking module (500) also includes a friction pad (550), and the operating element (510) is configured to force the friction pad (550) to press against a brake disc (560), the brake disc (560) being disposed on the axle (211) of the drive wheel assembly (210).

41. The rear-walking working machine according to claim 38, characterized in that, The parking module (500) also includes an electromagnetic braking mechanism, which is used to perform a parking action according to the wheel set braking signal to lock the axle (211) of the running wheel set (210).

42. The rear-walking working machine according to claim 35, characterized in that, The rear-walking machine also includes a mowing assembly, a power supply assembly (700), and a working motor (320) for driving the mowing assembly. The power supply assembly (700) is used to supply power to the working motor (320) and the walking motor (220). The weight of the rear-walking machine is greater than or equal to 45 kg.

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