Self-propelled device of mower and mower

Abstract

The invention discloses a self-propelled device of a mower and the mower, and belongs to the technical field of self-propelled devices of mowers. The self-propelled device is characterized in that the output end of a servo motor is fixedly connected with a first gear; the input end of the clutch assembly is connected with the first gear in a meshed mode, and the output end of the clutch assembly is connected with a reversing assembly. The reversing assembly comprises a guide sleeve and fourth gears, the outer wall of the guide sleeve is sleeved with a driving sleeve, the outer wall of the driving sleeve is provided with a second gear and a third gear, and the center of each fourth gear is rotationally connected with a second supporting shaft; and the fifth gear is connected with the fourth gear in a meshed mode, and the center of the fifth gear is fixedly connected with a main shaft. Through mutual cooperation of all gear pieces in the reversing assembly, switching of forward rotation and reverse rotation of the driving shaft is achieved, so that self-propelled control over advancing and retreating of the mower is achieved, the convenience of displacement of the mower is improved, and the situation that due to a traditional one-way self-propelled structure, the mower is inconvenient to push backwards is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mower self-walker, in particular to a mower self-walker and a mower. BACKGROUND

[0002] The self-walker is a component system for driving the mower to walk by itself, which is equipped with an independent power source, combined with a stepless speed change, mechanical speed change or electronic control system, to drive the mower to walk on the lawn by itself. The user can control the direction, speed and operation mode through a joystick or remote controller to achieve efficient and accurate lawn maintenance.

[0003] According to the search, an invention patent discloses a self-walker (publication number: CN220374603U), which includes a power assembly, a transmission mechanism, a trigger mechanism and an output mechanism. The transmission mechanism is adapted to transmit power of the power assembly to the trigger mechanism. The trigger mechanism is arranged in the transmission mechanism and includes a connecting plate and a pair of centrifugal blocks. The pair of centrifugal blocks are symmetrically arranged on the connecting plate, and each centrifugal block is adapted to slide along the connecting plate. In this application, the centrifugal blocks can effectively realize quick switching of the output state of the self-walker, improve the stability of the self-walker, and make the self-walker suitable for use on a cart. When the cart passes through different road conditions, the self-walker can switch the state according to the actual road conditions, thereby ensuring the stability of the self-walker itself and the cart during operation.

[0004] The above-mentioned patent realizes quick switching of the output state of the self-walker through a centrifugal structure to improve the stability of the self-walker. However, in actual use, the self-walking driving direction of the self-walker can only drive the vehicle body to move forward, and cannot control the self-walking direction backward. If the vehicle body is pulled backward in an uphill state, the self-walking structure needs to consume a lot of effort, thereby affecting the flexibility of the vehicle body self-walking.

[0005] Therefore, the present application provides a mower self-walker and a mower to solve the above-mentioned problems. SUMMARY

[0006] The present application provides a mower self-walker and a mower to solve the problems raised in the background art.

[0007] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a mower self-walker and a mower, which include a servo motor, the output end of the servo motor is fixedly connected with a first gear; a clutch assembly, the input end of the clutch assembly is interlockingly connected with the first gear, and the output end of the clutch assembly is connected with a reversing assembly; The reversing assembly includes a guide sleeve and a fourth gear, the outer wall of the guide sleeve is sleeved with a driving sleeve, the outer wall of the driving sleeve is provided with a second gear and a third gear, and the center of the fourth gear is rotationally connected with a second support shaft; The fifth gear is in meshing connection with the fourth gear, and the center of the fifth gear is fixedly connected with the main shaft, the servo motor, the clutch assembly, the reversing assembly and the fifth gear are wrapped with an adaptive part fixing and rotating shell, and the two ends of the main shaft respectively penetrate to the outside of the shell.

[0008] As a preferred technical solution of the present application, the clutch assembly comprises a gear disc, the gear disc is the input end of the clutch assembly, the inside of the gear disc is provided with a guide frame, the center of the guide frame is rotatably connected with a first support shaft, and the first support shaft is fixedly connected in the shell, the inside of the gear disc is symmetrically provided with guide sliding grooves, and the friction wheels are slidably connected between the guide sliding grooves.

[0009] As a preferred technical solution of the present application, the side of the friction wheel close to each other is fixedly connected with a tension spring, and the other end of the tension spring is fixedly connected to the outer wall of the guide frame, the two sides of the friction wheel are provided with guide grooves suitable for sliding of the guide sliding grooves.

[0010] As a preferred technical solution of the present application, the two sides of the gear disc are rotatably provided with friction discs, and the friction discs are the output end of the clutch assembly, the outer wall of the friction disc is fixedly connected with a guide sleeve, the friction disc is rotatably connected to the outer wall of the guide frame, the friction wheel is abutted to the inner wall of the friction disc in the centrifugal state, and the side of the friction wheel and the friction disc in contact with each other is provided with an anti-skid friction plate.

[0011] As a preferred technical solution of the present application, the outer wall of the guide sleeve is uniformly distributed with guide strips, and the inner wall of the drive sleeve is provided with limiting sliding grooves corresponding to the guide strips, the second gear and the fifth gear are in meshing when the third gear and the fourth gear are in staggered distribution, the second gear and the fifth gear are in staggered distribution when the third gear and the fourth gear are in meshing, and the distance between the second gear and the third gear is greater than the width of the fourth gear.

[0012] As a preferred technical solution of the present application, the second gear and the third gear have the same distribution state, and the second gear and the third gear have the same size, the second gear, the fourth gear and the fifth gear are in meshing state in cross section state.

[0013] As a preferred technical solution of the present application, the center of the drive sleeve is provided with a limiting ring, and the outside of the limiting ring is wrapped with a rotating sleeve, the two sides of the rotating sleeve and the limiting ring are respectively abutted to each other through the thrust bearing, one side of the rotating sleeve extends a positioning rod, and the outer wall of the positioning rod is fixedly connected with the jacking end of the servo push rod, and the servo push rod is fixedly connected in the inside of the shell.

[0014] A mower, comprising a rear-mounted universal wheel body and a self-propelled device of the mower as claimed in any one of claims 1-7 mounted at the front end of the body.

[0015] The application has the beneficial effects that: The application can realize the reversing transmission of the gear parts at different positions under the position adjustment of the driving sleeve, i.e., the forward rotation and reverse rotation switching of the driving shaft under the cooperation of the gear parts, and then drive the mower to move forward by forward rotation and to move backward by reverse rotation, thereby improving the convenience of the displacement of the mower and avoiding the inconvenience of the backward movement of the mower caused by the traditional one-way self-propelled structure.

[0016] The application can realize the synchronous rotation driving of the clutch assembly by high-speed centrifugation, and when the speed slows down, the centrifugal force is insufficient to drive the friction disc to rotate, thereby making the subsequent reversing assembly unable to rotate, at this time, the reversing assembly is in a static state, and the reversing operation can be performed, and the reversing assembly is driven by the clutch assembly to restore high-speed rotation, i.e., the adjustment of the rotation direction of the main shaft under the switching of the reversing assembly, and the forward and reverse rotation switching of the main shaft is more smooth under the cooperation of the clutch assembly, and the direction switching can be realized without waiting for the rotation of the main shaft to stop, and the gear disc in the clutch assembly can realize the speed-up processing without being completely static, thereby improving the flexibility of the reversing processing of the mower. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a schematic view of the transmission structure of the application; Figure 2 is a schematic view of the top plane local structure of the application; Figure 3 is a schematic view of the Figure 2 is an enlarged structure schematic view of A in the application; Figure 4 is a schematic view of the first gear plane distribution structure of the application; Figure 5 is a schematic view of the local explosion structure of the clutch assembly of the application; Figure 6 is a schematic view of the axial section structure of the clutch assembly of the application.

[0018] In the drawings: 1, servo motor; 11, first gear; 2, clutch assembly; 21, gear disc; 22, guide frame; 23, first support shaft; 24, guide chute; 25, friction wheel; 26, tension spring; 27, friction disc; 3, reversing assembly; 31, guide sleeve; 32, drive sleeve; 33, second gear; 34, third gear; 35, fourth gear; 36, second support shaft; 37, rotating sleeve; 38, servo push rod; 4, fifth gear; 5, main shaft. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0020] As shown in the drawings, Figures 1-6 The self-walker of the mower and the mower are provided, which comprise a servo motor 1, the output end of the servo motor 1 is fixedly connected with a first gear 11; a clutch assembly 2, the input end of the clutch assembly 2 is meshingly connected with the first gear 11, and the output end of the clutch assembly 2 is connected with a reversing assembly 3; the reversing assembly 3 comprises a guide sleeve 31 and a fourth gear 35, the outer wall of the guide sleeve 31 is sleeved with a drive sleeve 32, and the outer wall of the drive sleeve 32 is provided with a second gear 33 and a third gear 34, the center of the fourth gear 35 is rotatably connected with a second support shaft 36; a fifth gear 4, the fifth gear 4 is meshingly connected with the fourth gear 35, and the center of the fifth gear 4 is fixedly connected with a main shaft 5, the servo motor 1, the clutch assembly 2, the reversing assembly 3 and the fifth gear 4 are wrapped with an adaptive part fixing and rotating shell, and the two ends of the main shaft 5 respectively penetrate to the outside of the shell, the two ends of the main shaft 5 are fixedly connected with wheels, under the drive of the servo motor 1, the clutch assembly 2 is driven to rotate by the first gear 11, under the high-speed rotation of the clutch assembly 2, the drive of the reversing assembly 3 is realized through centrifugal cooperation, so that under the control of the reversing assembly 3, the rotation direction of the fifth gear 4 is adjusted, and then the main shaft 5 is controlled to realize forward rotation and reverse rotation, that is, the self-walking control of the forward movement and the backward pushing of the mower can be realized.

[0021] Further, the clutch assembly 2 comprises a gear disc 21, the gear disc 21 is the input end of the clutch assembly 2, the inside of the gear disc 21 is provided with a guide frame 22, and the center of the guide frame 22 is rotatably connected with a first supporting shaft 23, and the first supporting shaft 23 is fixedly connected in the inside of the shell, the inside of the gear disc 21 is symmetrically provided with guide sliding grooves 24, and the guide sliding grooves 24 are slidably connected with friction wheels 25, and the side close to each other of the friction wheels 25 is fixedly connected with a tension spring 26, and the other end of the tension spring 26 is fixedly connected to the outer wall of the guide frame 22, and the two sides of the friction wheel 25 are provided with guide grooves matched with the sliding of the guide sliding grooves 24, and the inside of the two sides of the gear disc 21 is rotatably provided with a friction disc 27, and the friction disc 27 is the output end of the clutch assembly 2, the outer wall of the friction disc 27 is fixedly connected with a guide sleeve 31, and the friction disc 27 is rotatably connected to the outer wall of the guide frame 22, and the friction wheel 25 is abutted to the inner wall of the friction disc 27 in the centrifugal state, and the side close to each other of the friction wheel 25 and the friction disc 27 is provided with an antiskid friction sheet, when the first gear 11 drives the gear disc 21 to rotate at high speed, the centrifugal force generated by the high-speed rotation of the gear disc 21 drives the two friction wheels 25 to be thrown out to the outside, so that the outer wall of the friction wheel 25 is abutted to the inner wall of the friction disc 27, and the setting of the antiskid friction sheet on the contact surface improves the friction force of the contact between the friction wheel 25 and the friction disc 27, and further drives the friction disc 27 to rotate, that is, the guide sleeve 31 is driven to rotate, when the speed of the servo motor 1 is reduced, the first gear 11 drives the gear disc 21 to rotate at a reduced speed, the reduction of the rotation speed of the gear disc 21 reduces the centrifugal force of the friction wheel 25, so that the friction wheel 25 and the friction disc 27 are out of synchronous driving, at this time the friction disc 27 quickly realizes the static state, so that the lateral sliding adjustment of the external driving sleeve 32 can be realized in the static state of the guide sleeve 31, avoiding the jamming during the steering switching, after the steering switching, the acceleration of the servo motor 1 can drive the main shaft 5 again, so that the servo motor 1 does not need to realize the forward and reverse rotation switching, reduces the use cost, and at the same time, the first gear 11 can be driven again without completely stopping, improves the flexibility of the self-propelled switching, and reduces the downtime of the mower.

[0022] Further, the outer wall of the guide sleeve 31 is uniformly distributed with guide strips, and the inner wall of the driving sleeve 32 is provided with a limiting sliding groove corresponding to the guide strips, which are limited and slidably connected, and can guide and limit the axial sliding of the driving sleeve 32. At the same time, the rotation of the guide sleeve 31 can drive the driving sleeve 32 to rotate. When the second gear 33 is engaged with the fifth gear 4, the third gear 34 and the fourth gear 35 are staggered. When the third gear 34 is engaged with the fourth gear 35, the second gear 33 and the fifth gear 4 are staggered. The distance between the second gear 33 and the third gear 34 is greater than the width of the fourth gear 35. Through the distribution of the second gear 33, the third gear 34, the fourth gear 35 and the fifth gear 4, the engagement of the second gear 33 and the fifth gear 4 drives the main shaft 5 to rotate forward. When the third gear 34 and the fourth gear 35 are engaged with each other, the rotation of the driving sleeve 32 first drives the fourth gear 35 to rotate, and further drives the fifth gear 4 to rotate, thereby driving the main shaft 5 to rotate reversely. Through the forward and reverse rotation of the main shaft 5, the mower can be flexibly driven and controlled to move forward and backward under self-control. The second gear 33 and the third gear 34 have the same distribution state and the same size. The second gear 33, the fourth gear 35 and the fifth gear 4 are in engagement state under cross section state.

[0023] Further, the center of the driving sleeve 32 is provided with a limiting ring, and the outer part of the limiting ring is wrapped with a rotating sleeve 37. The two sides of the rotating sleeve 37 are respectively abutted with each other through the thrust bearing. One side of the rotating sleeve 37 extends a positioning rod, and the outer wall of the positioning rod is fixedly connected with the lifting end of the servo push rod 38. The servo push rod 38 is fixedly connected inside the shell. The horizontal pulling of the rotating sleeve 37 can be driven by the start of the servo push rod 38. Further, the rotation of the rotating sleeve 37 and the driving sleeve 32 outer wall limiting ring can drive the driving sleeve 32 to axially displace, and can meet the rotation of the guide sleeve 31 to drive the driving sleeve 32 to rotate. In order to ensure the stability of horizontal pushing, the rotating sleeve 37 can be fixed with guide strips on the inner wall of the shell, so that the guide strips are limited on both sides of the straight line segment of the rotating sleeve 37, thereby improving the stability of the horizontal displacement of the rotating sleeve 37.

[0024] A mower, the mower comprising a rear universal wheel body and a self-walker of the mower of any one of claims 1-7 installed at the front end of the body. The rear universal wheel structure is provided to facilitate the control of the moving direction of the mower, thereby further improving the convenience of using the mower.

[0025] The working principle is as follows: firstly, the self-walker and the mower are installed and matched with each other, under the control of the self-walker, the mower can be driven to advance and push back, meanwhile, the hand-push structure can better control the moving direction of the mower under the cooperation of the rear universal wheel, meanwhile, the universal wheel can adopt rotary limiting control to ensure that the universal wheel keeps straight walking, so that the lawn trimming in long straight line state is realized, the left and right deviation of the mower is reduced, and under the driving of the internal servo motor 1, the self-walker drives the first gear 11 to rotate, the first gear 11 drives the gear disc 21 to rotate, when the gear disc 21 rotates at high speed, the friction wheel 25 is thrown out through the centrifugal state of the gear disc 21, so that the friction wheel 25 abuts against the inner wall of the friction disc 27, and then the friction disc 27 is driven to rotate, the friction disc 27 drives the external guide sleeve 31 to rotate at the same time, when the second gear 33 and the fifth gear 4 are engaged, the main shaft 5 is realized positive rotation, when the control servo push rod 38 drives the rotating sleeve 37 to pull, the third gear 34 and the fourth gear 35 are engaged, under the engagement and reversing of the third gear 34 and the fourth gear 35, the fifth gear 4 is engaged and driven through the fourth gear 35, so that the main shaft 5 is realized reverse rotation, and when the servo push rod 38 works, the servo motor 1 is first slowed down, so that the rotating speed of the gear disc 21 is reduced, when the rotating speed of the gear disc 21 is reduced, the centrifugal force is reduced, so that the friction wheel 25 and the friction disc 27 are separated, at this time, the friction disc 27 keeps stationary, then the servo push rod 38 is driven to ensure the stability of the engagement of the second gear 33 and the third gear 34 with the fifth gear 4 and the fourth gear 35 when displacement adjustment is performed.

[0026] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. Self-propelled device for a lawnmower, characterized in that: Including servo motor (1), the output end of servo motor (1) is fixedly connected with first gear (11); Clutch assembly (2), the input end of clutch assembly (2) is mutually engaged with first gear (11), and the output end of clutch assembly (2) is connected with reversing assembly (3); The reversing assembly (3) includes guide sleeve (31) and fourth gear (35), the outer wall of guide sleeve (31) is sleeved with drive sleeve (32), and the outer wall of drive sleeve (32) is provided with second gear (33) and third gear (34), the center of fourth gear (35) is rotatably connected with second support shaft (36); Fifth gear (4), the fifth gear (4) is engaged with fourth gear (35), and the center of fifth gear (4) is fixedly connected with main shaft (5), the outside of servo motor (1), clutch assembly (2), reversing assembly (3) and fifth gear (4) is wrapped with adaptive parts fixed and rotating shell, and the both ends of main shaft (5) are respectively penetrated to the outside of shell.

2. The mower's self-propelled device according to claim 1, characterized in that: The clutch assembly (2) includes gear disc (21), the input end of clutch assembly (2) is provided with guide frame (22) in the inside of gear disc (21), and the center of guide frame (22) is rotatably connected with first support shaft (23), and the first support shaft (23) is fixedly connected in the inside of shell, the inside of gear disc (21) is symmetrically provided with guide sliding groove (24), and the guide sliding groove (24) is slidably connected with friction wheel (25) between them.

3. The mower's self-propelled device according to claim 2, characterized in that: The side of the friction wheel (25) close to each other is fixedly connected with tension spring (26), and the other end of the tension spring (26) is fixedly connected to the outer wall of the guide frame (22), the both sides of the friction wheel (25) are provided with guide grooves suitable for sliding of the guide sliding groove (24).

4. The mower's self-propelled device according to claim 3, characterized in that: The both sides of the gear disc (21) are rotatably provided with friction disc (27) in the inside, and the friction disc (27) is the output end of clutch assembly (2), the outer wall of the friction disc (27) is fixedly connected with guide sleeve (31), the friction disc (27) is rotatably connected to the outer wall of the guide frame (22), the inner wall of the friction disc (27) is abutted in the centrifugal state of the friction wheel (25), the side of the friction wheel (25) and the friction disc (27) contacting each other is provided with anti-skid friction sheet.

5. The mower's self-propelled device according to claim 1, characterized in that: The outer wall of the guide sleeve (31) is uniformly distributed with guide strip, and the inner wall of the drive sleeve (32) is provided with limiting sliding groove corresponding to the guide strip, the second gear (33) is engaged with the fifth gear (4), the third gear (34) is staggered with the fourth gear (35), the third gear (34) is engaged with the fourth gear (35), the second gear (33) is staggered with the fifth gear (4), the distance between the second gear (33) and the third gear (34) is greater than the width of the fourth gear (35).

6. The mower's self-propelled device according to claim 5, characterized in that: The second gear (33) and the third gear (34) are in the same distribution state and have the same size, and the second gear (33), the fourth gear (35) and the fifth gear (4) are in the meshing state in the cross section.

7. The mower's self-propelled device according to claim 5, characterized in that: The center of the driving sleeve (32) is provided with a limiting ring, and the outer part of the limiting ring is wrapped with a rotating sleeve (37). The two sides of the limiting ring are respectively in abutment with the rotating sleeve (37) through the thrust bearings. One side of the rotating sleeve (37) extends a positioning rod, and the outer wall of the positioning rod is fixedly connected with the jacking end of a servo push rod (38). The servo push rod (38) is fixedly connected to the inside of the shell.

8. A lawnmower characterised in that: The mower comprises a rear universal wheel body and a self-walker of the mower as claimed in any one of claims 1-7 mounted to the front end of the body.

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