CN114027035B - A wheel adjustment assembly of an agricultural lawnmower - Google Patents

Abstract

The invention relates to the field of mowers, in particular to a wheel adjusting assembly of an agricultural mower, which comprises traveling wheels arranged on two sides of an installation frame, wherein the installation frame is provided with traveling driving devices, each traveling driving device is connected with the installation frame through a first connecting mechanism and a second connecting mechanism, the wheel adjusting assembly further comprises a locking device, the locking device comprises a rotating piece, a positioning mechanism used for fixing the rotating piece and an exit mechanism used for releasing the fixed state of the rotating piece, the rotating piece can rotate on the installation frame towards the directions of the two traveling wheels, and a trigger mechanism used for driving the rotating piece to rotate through the movement of the traveling wheels is arranged between the first connecting mechanism and the rotating piece.

Description

A wheel adjustment assembly for an agricultural lawnmower

technical field

The invention relates to the field of lawnmowers, in particular to a wheel adjustment assembly of an agricultural lawnmower.

Background technique

With the development of science and technology, various machines and equipment are emerging, such as lawn mowers, which are suitable for lawn trimming and maintenance in home gardens, public green spaces and other places. At present, lawn mowers can be configured as gardening tractors, riding lawn mowers , Commercial walk-behind lawn mowers and small walk-behind lawn mowers, in general, lawn mowers rely on wheel mechanisms for walking, however, in traditional methods, the wheel mechanisms of lawn mowers cannot be adjusted, making The lawn mower cannot adapt to walking on different road surfaces, cannot meet the high-quality requirements of users, and greatly reduces the user experience.

The currently published Chinese patent CN202023078660.1 is a wheel adjustment mechanism for lawn mowers, including a first motor, a second motor, a first drive cylinder, a second drive cylinder, a first wheel mechanism and a second wheel mechanism, and its features That is, it also includes: a support plate for connecting with the mower, wherein the first motor is arranged on one side of the support plate through the first bracket, and the second motor is arranged on the support plate through the second bracket The other side of the plate; the fixed frame is arranged in the support plate, wherein the bottom of the fixed frame is provided with a first rotating rod and a second rotating rod at intervals; the first screw rod is arranged on the first horizontal direction along the first horizontal direction. In the end of the fixed frame, wherein the first slider is threadedly connected to the first screw rod, and the rotation shaft of the first motor is connected with the first screw rod, so as to be driven by the first motor The first screw rod rotates to drive the first slider to slide in the first screw rod; the second screw rod is arranged in the end of the fixing bracket along the first horizontal direction, wherein the The second screw rod is threadedly connected with a second slider, and the rotating shaft of the second motor is connected with the second screw rod to drive the second screw rod to rotate through the second motor to drive the second screw rod. The second sliding block slides in the second screw rod; the first connecting block, wherein one end of the first driving cylinder is rotationally connected with the first position of the first connecting block, and the first driving cylinder The telescopic rod at the other end is rotationally connected with the first slider; the second connecting block, wherein one end of the second driving cylinder is rotationally connected with the first position of the second connecting block, and the second driving cylinder The telescopic rod at the other end is rotatably connected to the second slider; the first connecting rod is rotatably connected at one end to the first rotating rod, and the other end is rotatably connected to the second position of the first connecting block; The second connecting rod, one end of which is rotatably connected to the second rotating rod, and the other end is rotatably connected to the second position of the second connecting block; the first drive rod, one end of which is rotatably connected with the first wheel mechanism connected, the other end is rotatably connected to the third position of the first connecting block; the second drive rod is rotatably connected to the second wheel mechanism at one end, and the other end is rotatably connected to the third position of the second connecting block .

According to the above-mentioned patent, the patent controls the width between the first wheel mechanism and the second wheel mechanism through the first motor and the second motor to realize the adjustment of the distance between the wheels, and the first driving cylinder and the second The drive cylinder controls the height of the first wheel mechanism and the second wheel mechanism to realize the adjustment of the height of the wheels. However, when the distance between the first wheel mechanism and the second wheel mechanism is adjusted in this patent, the first wheel mechanism and the second wheel mechanism The mechanism needs to slide to both sides. Since the first wheel mechanism and the second wheel mechanism have separate driving sources, the wheels will be greatly worn when adjusting the distance between the two wheels, and the patent cannot adjust the first wheel mechanism. and the distance between the second wheel mechanism and adjust the distance between the support plate and the ground at the same time, therefore, there is a need for a wheel adjustment that can simultaneously adjust the distance between the two wheels and the height of the mounting frame without wearing the wheel components.

Contents of the invention

Based on this, it is necessary to provide a wheel adjustment assembly for agricultural lawnmowers in view of the existing technical problems. This application realizes the adjustment of the distance between the two road wheels and the locking of the rotating parts by the positioning mechanism to realize the adjustment of the road wheels. It can adapt to walking on different grounds, realizes the stability of the two walking wheels after adjusting the distance, and expands the walking range of the lawn mower.

In order to solve the problems of the prior art, the technical solution adopted in the present invention is:

The invention provides a wheel adjustment assembly of an agricultural lawn mower, which includes traveling wheels arranged on both sides of a mounting frame, and the mounting frame is provided with a traveling driving device for driving each traveling wheel to move and turn, and each traveling driving device It is also connected with the installation frame through a first connection mechanism and a second connection mechanism, and also includes a locking device for positioning the distance between the two traveling wheels. The locking device includes a rotating part and a The positioning mechanism arranged on the mounting frame to fix the rotating part and the withdrawal mechanism provided on the mounting frame to release the fixed state of the rotating part, the rotating part can rotate toward the direction of the two road wheels on the mounting frame, and the first A trigger mechanism for driving the rotating member to rotate through the movement of the road wheels is also provided between the connecting mechanism and the rotating member.

Preferably, the rotating member is specifically a cam protruding from both ends, and a fixed seat is fixedly arranged on the mounting frame, and the cam is arranged on the fixed seat by rotating a rotating shaft, and one end of each trigger mechanism is respectively connected to the protruding part of the cam , and one end of the rotating shaft is also provided with a movable block for the positioning mechanism to lock the cam.

Preferably, the movable block has a hexagonal block structure, and the rotating shaft is provided with a square opening along its axial direction. The movable block is inserted into the square opening through a square-shaped insertion rod that fits the square opening, and the rotating shaft is close to the end of the movable block. A fixed disk is also provided, and a spring is sheathed on the insertion rod between the fixed disk and the movable block.

Preferably, the positioning mechanism includes a turntable and a movable disc, the turntable is fixed on the mounting frame, and the movable disc is rotatably arranged on the turntable, the direction of rotation of the movable disc is parallel to the direction of rotation of the cam and the movable disc is also aligned with The rotating shafts are coaxial, and the turntable is also provided with a first rotary driver for driving the movable disc to rotate, and the movable disc is provided with a movable block which is the same in shape as the movable block and can hold the movable block on the side facing the movable block. bayonet.

Preferably, the withdrawal mechanism includes a threaded sleeve arranged on the mounting frame and a screw threaded in the threaded sleeve, the threaded sleeve can rotate on the mounting frame along the rotation direction of the movable disk, and the mounting frame is also provided with a The second rotary driver used to drive the threaded sleeve to rotate, the screw is coaxially inserted in the square opening of the rotating shaft, the diameters of the screw and the threaded sleeve are both smaller than the size of the square opening, and the end of the screw near the inserting rod on the movable block is also provided with a A ball, and the end of the insertion rod inserted into the square opening is also provided with a round mouth capable of accommodating the ball, and the depth of the round mouth is also greater than the diameter of the steel ball.

Preferably, the surface of the fixed disc is provided with a first induction switch for the movable block to trigger and control the start and stop of the second rotary drive, and the movable disc is also provided with a trigger for the movable block to control the first rotary drive and the second rotary drive in the bayonet. Second sensor switch for simultaneous start and stop of rotary drives.

Preferably, the first connection mechanism includes a sleeve rod and a telescopic rod, one end of the sleeve rod is hinged on a first hinged seat and the first hinged seat is fixed on the traveling drive device, and one end of the telescopic rod is movably inserted in the sleeve rod , the other end of the telescopic rod is hinged on a second hinged seat and the second hinged seat is fixed on the mounting frame, and one end of the trigger mechanism is connected to the telescopic rod.

Preferably, the trigger mechanism includes a pull rod, one end of the pull rod is hinged on the protruding end of the cam through a hinge rod, the other end of the pull rod is hinged on a sleeve and the sleeve is sleeved on the telescopic rod, and the pull rod A fixed sleeve fixed on the installation frame is also sheathed, and the moving direction of the pull rod is perpendicular to the moving direction of the movable block.

Preferably, the second connecting mechanism includes a connecting frame, which is fixed on the mounting frame by high-strength bolts, and a connecting rod in a parallelogram structure is hinged between the connecting frame and each driving device, and every two A connecting plate for stabilizing the connecting rods is also fixed between the connecting rods.

Preferably, the walking drive device includes a fixed frame and a bogie, the first hinged seat and the connecting rod are connected to the fixed frame, the bogie can rotate on the fixed frame, and there is also a fixed frame for driving the bogie to rotate. The third rotary drive, the road wheels can rotate on the bogie, and the bogie is also provided with a fourth rotary drive for driving the road wheels to rotate.

The beneficial effect that the present invention has compared with prior art is:

1. In this application, through the locking of the rotating parts by the positioning mechanism, the two road wheels can be kept at the adjusted position after the distance is adjusted, and the distance adjustment realized by the two road wheels also adjusts the installation frame at the same time The distance between the ground and the ground realizes that the walking wheels can adapt to walking on different grounds.

2. Through the connection between the cam and the trigger mechanism, this application realizes that the first connection mechanism drives the activity of the trigger mechanism to drive the rotation of the cam, and since the cam is provided with a movable block, it ensures that the cam is also fixed while the movable block is fixed. Then it is locked.

3. In this application, the locking of the cam is realized by the bayonet on the movable disc to the movable block, so as to ensure that the distance between the two walking wheels will not be changed again during the moving process after the distance is adjusted.

4. In this application, the movement of the movable block is driven by the cooperation between the screw rod and the insertion rod, so that the movable block can withdraw from the bayonet of the movable disc to release the locked state of the movable block.

5. In this application, the pull rod pulls the cam to realize the rotation of the cam, and because the two pull rods are connected to the cam, the stability of the two road wheels after the spacing is adjusted when the cam is locked is also realized.

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram of embodiment;

Fig. 2 is the front view of embodiment;

Fig. 3 is a sectional view at A-A place of Fig. 2;

Fig. 4 is an enlarged schematic view at B of Fig. 3;

Fig. 5 is the left view of embodiment;

Fig. 6 is a sectional view at the C-C place of Fig. 5;

Fig. 7 is a schematic diagram of a partial three-dimensional structure of an embodiment;

Fig. 8 is a schematic diagram of a partial three-dimensional structure of the second embodiment;

Fig. 9 is a three-dimensional structural schematic view of the locking device;

FIG. 10 is an exploded schematic view of the three-dimensional structure of FIG. 9 .

The labels in the figure are:

1 - Mounting frame;

2 - walking wheels;

3-travel driving device; 3a-fixed frame; 3a1-third rotary drive; 3b-bogie; 3b1-fourth rotary drive;

4-the first connecting mechanism; 4a-sleeve rod; 4a1-the first hinged seat; 4b-telescopic rod; 4b1-the second hinged seat;

5-second connecting mechanism; 5a-connecting frame; 5a1-high-strength bolts; 5b-connecting rod; 5c-connecting plate;

6-locking device; 6a-rotating member; 6a1-cam; 6a2-fixed seat; 6a3-rotating shaft; 6a31-fixed disc; Mouth; 6a43-spring; 6b-positioning mechanism; 6b1-turntable; 6b2-movable disc; 6b21-bayonet; 6b22-second induction switch; 6b3-first rotary driver; 6c2-screw; 6c21-ball; 6c3-second rotary driver;

7-trigger mechanism; 7a-pull rod; 7a1-hinge rod; 7b-sleeve; 7c-fixing sleeve.

Detailed ways

In order to further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figures 1-10, this application provides:

A wheel adjustment assembly for an agricultural lawnmower, comprising road wheels 2 arranged on both sides of a mounting frame 1, the mounting frame 1 is provided with a driving device 3 for driving each road wheel 2 to move and turn, and each walking wheel The driving device 3 and the mounting frame 1 are also connected through a first connecting mechanism 4 and a second connecting mechanism 5, and also include a locking device 6 for positioning the distance between the two road wheels 2, and the locking device 6 includes The rotating part 6a arranged on the mounting frame 1 and the positioning mechanism 6b arranged on the mounting frame 1 to fix the rotating part 6a and the withdrawal mechanism 6c arranged on the mounting frame 1 to release the fixed state of the rotating part 6a, the rotating part 6a can be rotated toward the direction of the two road wheels 2 on the mounting frame 1, and a trigger mechanism 7 is provided between the first connecting mechanism 4 and the rotating part 6a to drive the rotating part 6a to rotate through the movement of the road wheels 2 .

Based on the above-mentioned embodiment, the existing lawn mower cannot adjust the wheels according to the terrain, so that the lawn mower cannot adapt to walking on different road surfaces, cannot meet the high quality requirements of users, and greatly reduces the user experience. Therefore, in order to solve The technical problem of how to adjust the walking wheels 2 of the lawn mower. During the normal mowing process of the lawn mower, when the operator finds that there is a terrain that is not conducive to walking, the operator controls each driving device 3 to control the two walking wheels 2 Simultaneously move outwards or move inwards at the same time, while the two road wheels 2 are moving outwards or inwards, since the installation frame 1 and the walking drive device 3 are connected by the first connecting mechanism 4 and the second connecting mechanism 5, Therefore, along with the movement of the road wheels 2, the height between the mounting frame 1 and the ground is also adjusted thereupon, and the two road wheels 2 move outward, the closer the distance between the mounting frame 1 and the ground is, otherwise, the mounting frame 1 1 The farther the distance from the ground is, the operator needs to control the locking device 6 to limit the distance between the two road wheels 2 to the adjusted level when the distance between the two road wheels 2 is adjusted to suit the terrain. Due to the movement of the mounting frame 1 and the connection between the rotating part 6a and the first connecting mechanism 4 through the trigger mechanism 7, the rotating part 6a rotates thereupon under the adjustment of the mounting frame 1, and waits between the two road wheels 2. After the distance adjustment is completed, the rotating part 6a also stops rotating, and the operator controls the positioning mechanism 6b to fix the rotating part 6a at this position, so that the distance between the two road wheels 2 will not change again. When adjusting the distance between the two road wheels 2, the operator needs to control the withdrawal mechanism 6c to release the fixed state of the rotating part 6a. After the rotating part 6a can rotate again, the operator then adjusts the distance between the two road wheels 2 After the adjustment is completed, the rotating member 6a is locked by the positioning mechanism 6b. Finally, the adjustment of the distance between the two road wheels 2 and the height of the mounting frame 1 is completed.

further:

The rotating part 6a is specifically a cam 6a1 protruding from both ends. A fixed seat 6a2 is fixedly arranged on the mounting frame 1. The cam 6a1 is arranged on the fixed seat 6a2 by rotating a rotating shaft 6a3. One end of each trigger mechanism 7 is respectively connected to the The protruding part of the cam 6a1, and one end of the rotating shaft 6a3 is also provided with a movable block 6a4 for the positioning mechanism 6b to lock the cam 6a1.

Based on the above-mentioned embodiment, in order to solve the technical problem of how the rotating member 6a rotates, when the distance between the two road wheels 2 is adjusted, the first connecting mechanism 4 will drive the trigger mechanism 7 to move accordingly, due to the connection between the trigger mechanism 7 and the cam 6a1 Therefore, the cam 6a1 completes the rotation of the cam 6a1 under the push and pull of the two trigger mechanisms 7 in the same direction. During the rotation of the cam 6a1, the movable block 6a4 on the cam 6a1 also rotates with the cam 6a1. When the travel wheel 2 stops moving Therefore, after the movable block 6a4 stops rotating, the positioning mechanism 6b immediately locks the movable block 6a4.

further:

The movable block 6a4 has a hexagonal block structure, and the rotating shaft 6a3 is provided with a square opening along its axial direction. The movable block 6a4 is inserted into the square opening through an insertion rod 6a41 of a square structure that fits the square opening, and the rotating shaft 6a3 is close to the movable block 6a4 There is also a fixed disc 6a31 at the end of the top, and a spring 6a43 is sheathed on the insertion rod 6a41 and between the fixed disc 6a31 and the movable block 6a4.

Based on the above-mentioned embodiment, after the cam 6a1 rotates when the walking wheel 2 is adjusted, since the movable block 6a4 is inserted in the square opening of the rotating shaft 6a3 through the insertion rod 6a41, the cam 6a1 also drives the movement of the movable block 6a4 when it rotates. Rotate, and due to the connection between the movable block 6a4 and the fixed disc 6a31 by the spring 6a43, after the movable block 6a4 is locked on the positioning mechanism 6b by the action of the spring 6a43, the movable block 6a4 can also be withdrawn by the withdrawal mechanism 6c The positioning mechanism 6b enables the movable block 6a4 to be locked on the positioning mechanism 6b autonomously.

further:

The positioning mechanism 6b includes a turntable 6b1 and a movable disc 6b2, the turntable 6b1 is fixed on the mounting frame 1, the movable disc 6b2 is arranged on the turntable 6b1 for rotation, and the rotation direction of the movable disc 6b2 is parallel to the rotation direction of the cam 6a1 And the movable disk 6b2 is also coaxial with the rotating shaft 6a3, and the turntable 6b1 is also provided with a first rotary driver 6b3 for driving the movable disk 6b2 to rotate, and the movable disk 6b2 is also provided on the side facing the movable block 6a4. There is a bayonet 6b21 which has the same shape as the movable block 6a4 and can hold the movable block 6a4.

Based on the above-mentioned embodiment, in order to solve the technical problem of how the positioning mechanism 6b locks the movable block 6a4, when the travel wheel 2 is adjusted, the movable block 6a4 is in the state of being moved out of the positioning mechanism 6b by the withdrawal mechanism 6c and unlocked, and the travel wheel 2 is to be adjusted. After completion, the withdrawal mechanism 6c moved the movable block 6a4 towards the direction of the movable disc 6b2. After the movable block 6a4 touched the movable disc 6b2, because the movable block 6a4 rotated when the walking wheel 2 was adjusted, the movable block 6a4 The shape cannot be docked in the bayonet 6b21 of the movable disc 6b2. Then, the operator controls the first rotary driver 6b3 to drive the movable disc 6b2 to rotate. After the movable disc 6b2 rotates in place, the movable block 6a4 will Then it is stuck into the bayonet 6b21 of the movable disc 6b2, the first rotary driver 6b3 stops driving, and after the movable block 6a4 is locked, the movement of the traveling wheel 2 cannot drive the cam 6a1 to rotate, and the distance between the two traveling wheels 2 It is then restricted to the adjusted state.

further:

The withdrawal mechanism 6c includes a threaded sleeve 6c1 arranged on the mounting frame 1 and a screw rod 6c2 threaded in the threaded sleeve 6c1. The threaded sleeve 6c1 can rotate along the rotating direction of the movable disk 6b2 on the mounting frame 1, and the mounting frame 1 is also provided with a second rotary driver 6c3 for driving the threaded sleeve 6c1 to rotate. The screw 6c2 is coaxially inserted in the square opening of the rotating shaft 6a3. The diameters of the screw 6c2 and the threaded sleeve 6c1 are also smaller than the size of the square opening. 6c2 is also provided with a ball 6c21 near one end of the insertion rod 6a41 on the movable block 6a4, and the end of the insertion rod 6a41 inserted into the square opening is also provided with a round mouth 6a42 capable of accommodating the ball 6c21, and the depth of the round mouth 6a42 is also greater than The diameter of the steel ball.

Based on the above embodiment, in order to solve the technical problem of how to release the fixed state of the movable block 6a4 by the exit mechanism 6c, when the operator needs to adjust the traveling wheel 2 again, the movable block 6a4 needs to leave the bayonet 6b21 of the movable disc 6b2, and the operator When the withdrawal mechanism 6c is driven, the second rotary driver 6c3 drives the threaded sleeve 6c1 to rotate, and the screw rod 6c2 drives the movable block 6a4 to move in a spiral manner under the drive of the threaded sleeve 6c1, because the end of the screw rod 6c2 is connected to the insertion rod 6a41 through a cylinder Therefore, when the screw rod 6c2 rotates, the movable block 6a4 will not rotate with the screw rod 6c2 until the movable block 6a4 moves out of the movable disc 6b2, and the movable block 6a4 returns to the state of being able to rotate thereupon. The depth of the opening 6a42 is greater than the diameter of the steel ball. Therefore, when the movable block 6a4 abuts against the movable disk 6b2, there is a distance for the movable block 6a4 to spring into the bayonet 6b21 under the action of the spring 6a43.

further:

The surface of the fixed disk 6a31 is provided with a first sensor switch 6a32 for the movable block 6a4 to trigger and control the start and stop of the second rotary driver 6c3, and the movable disk 6b2 and located in the bayonet 6b21 are also provided with a first sensor switch 6a32 for the movable block 6a4 to trigger and control the first rotation drive 6c3. The rotary driver 6b3 and the second rotary driver 6c3 start and stop the second induction switch 6b22 at the same time.

Based on the above embodiment, when the movable block 6a4 withdraws from the movable disc 6b2 and is in the unlocked state, the movable block 6a4 presses against the first inductive switch 6a32, and after the first inductive switch 6a32 detects it, the second rotary driver 6c3 also stops Drive, the surface movable block 6a4 has been moved out of the bayonet 6b21 of the movable disc 6b2, when the movable block 6a4 is stuck in the bayonet 6b21 of the movable disc 6b2, the movable block 6a4 is pressed against the second sensor under the action of the spring 6a43 On the switch 6b22, after the second induction switch 6b22 senses it, the first rotary driver 6b3 stops rotating the movable disc 6b2, and the second rotary driver 6c3 also stops pushing the movable block 6a4, and the surface movable block 6a4 has been snapped into the movable circle In the bayonet 6b21 of the disc 6b2, the control of the locking or unlocking state of the movable block 6a4 is completed.

further:

The first connecting mechanism 4 includes a sleeve rod 4a and a telescopic rod 4b, one end of the sleeve rod 4a is hinged on a first hinged seat 4a1 and the first hinged seat 4a1 is fixed on the walking drive device 3, and one end of the telescopic rod 4b is movably inserted Set in the sleeve rod 4a, the other end of the telescopic rod 4b is hinged on a second hinged seat 4b1 and the second hinged seat 4b1 is fixed on the mounting frame 1, and one end of the trigger mechanism 7 is connected to the telescopic rod 4b.

Based on the above embodiment, when the distance between the two road wheels 2 is adjusted inwardly or outwardly, since the end of the sleeve rod 4a and the end of the telescopic rod 4b are respectively hinged on the corresponding first hinged seat 4a1 and the second hinged seat 4b1, therefore, the telescopic rod 4b moves within the sleeve rod 4a, and the movement of the trigger mechanism 7 is driven along with the swing of the telescopic rod 4b on the second hinge seat 4b1.

further:

The trigger mechanism 7 includes a pull rod 7a, one end of the pull rod 7a is hinged on the protruding end of the cam 6a1 through a hinge rod 7a1, the other end of the pull rod 7a is hinged on a sleeve 7b and the sleeve 7b is sleeved on the telescopic rod 4b, and a fixed sleeve 7c fixed on the installation frame 1 is sheathed on the pull rod 7a, and the moving direction of the pull rod 7a is perpendicular to the moving direction of the movable block 6a4.

Based on the above embodiment, in order to solve the technical problem of how the trigger mechanism 7 drives the cam 6a1 to rotate, when the telescopic rod 4b swings along the hinge point of the second hinge seat 4b1, the sleeve 7b sleeved on the telescopic rod 4b drives the pull rod accordingly 7a moves in the sleeve, along with the horizontal movement of the pull rod 7a in the sleeve, and because the end of each pull rod 7a is hinged on the protruding end of the cam 6a1 through the hinge rod 7a1 respectively, therefore, along with the pull rod 7a Pulling, the upper protruding part of the cam 6a1 is subjected to the force of pulling down or pushing up, and the protruding part of the lower end of the cam 6a1 is correspondingly subjected to the force of pulling up or pushing down, and the cam 6a1 is thus in the position of the two forces. Completed the rotation under the action, and when the cam 6a1 was locked, the two road wheels 2 could not continue to move outwards or inwards thereupon.

further:

The second connection mechanism 5 includes a connecting frame 5a, which is fixed on the mounting frame 1 by high-strength bolts 5a1, and a connecting rod in a parallelogram structure is hinged between the connecting frame 5a and each driving device 3 5b, and a connecting plate 5c for stabilizing the connecting rod 5b is also fixed between every two connecting rods 5b.

Based on the above-mentioned embodiment, the second connecting mechanism 5 connects the traveling drive device 3 and the mounting frame 1 again, so that the movement of the traveling wheels 2 is more stable, and the height adjustment of the mounting frame 1 is also stabilized. The second connecting mechanism 5 connects At the same time, each walking drive device 3 is connected to the connecting frame 5a through two groups of connecting rods 5b in a parallelogram structure, and the connecting frame 5a is fixed on the mounting frame 1 by high-strength bolts 5a1. When the spacing is adjusted, the connecting rod 5b also moves accordingly, and under the double connection of the first connecting mechanism 4 and the second connecting mechanism 5, the stability of the movement of the road wheels 2 is maintained.

further:

The walking drive device 3 includes a fixed frame 3a and a bogie 3b, the first hinged seat 4a1 and the connecting rod 5b are all connected on the fixed frame 3a, the bogie 3b can rotate on the fixed frame 3a, and the fixed frame 3a is also provided with a The third rotary driver 3a1 is used to drive the bogie 3b to rotate. The road wheels 2 can rotate on the bogie 3b, and the bogie 3b is also provided with a fourth rotary driver 3b1 to drive the road wheels 2 to rotate.

Based on the above-mentioned embodiment, when the mower is walking in a straight line, the fourth rotary driver 3b1 drives the road wheels 2 to rotate, and when the two road wheels 2 need to be turned and the distance needs to be adjusted, the bogie 3b is adjusted by the third rotary driver 3a1 Therefore, the direction of the walking wheels 2 is adjusted, and when the distance between the two walking wheels 2 is adjusted, the two walking wheels 2 are adjusted to the same moving direction.

In this application, through the locking of the rotating member 6a by the positioning mechanism 6b, the two road wheels 2 can be kept at the adjusted position after the distance is adjusted, and the distance adjustment realized by the two road wheels 2 is also adjusted at the same time. The distance between the installation frame 1 and the ground realizes that the traveling wheels 2 can adapt to walking on different grounds.

The above examples only represent one or several implementations of the present invention, and the descriptions thereof are more specific and detailed, but should not be construed as limiting the patent scope of the present invention. It should be pointed out that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention should be based on the appended claims.

Claims (8)

1. A wheel adjustment assembly for an agricultural lawnmower, comprising walking wheels (2) arranged on both sides of the mounting frame (1), the mounting frame (1) is provided with a wheel for driving each walking wheel (2) to move and turn The traveling drive device (3), and each traveling drive device (3) is connected to the installation frame (1) through a first connecting mechanism (4) and a second connecting mechanism (5), characterized in that , also includes a locking device (6) for positioning the distance between the two road wheels (2), the locking device (6) includes: The rotating part (6a) arranged on the mounting frame (1): it is specifically a cam (6a1) protruding from both ends, and a fixed seat (6a2) is fixed on the mounting frame (1), and the cam (6a1) passes through a The rotating shaft (6a3) is arranged on the fixed seat (6a2) for rotation, and one end of each trigger mechanism (7) is respectively connected to the protruding part of the cam (6a1), and one end of the rotating shaft (6a3) is also provided with a The positioning mechanism (6b) locks the movable block (6a4) of the cam (6a1); The positioning mechanism (6b) arranged on the installation frame (1) to fix the rotating part (6a): the positioning mechanism (6b) includes a turntable (6b1) and a movable disk (6b2), and the turntable (6b1) is fixed on On the mounting bracket (1), the movable disk (6b2) is rotated and arranged on the turntable (6b1), the rotation direction of the movable disk (6b2) is parallel to the rotation direction of the cam (6a1) and the movable disk (6b2) is also connected to the cam (6a1). The rotating shafts (6a3) are coaxial, and the turntable (6b1) is also provided with a first rotary driver (6b3) for driving the movable disk (6b2) to rotate, and the movable disk (6b2) faces the movable block (6a4) There is also a bayonet (6b21) which has the same shape as the movable block (6a4) and can hold the movable block (6a4) on one side; An exit mechanism (6c) provided on the mounting frame (1) to release the fixed state of the rotating member (6a), the rotating member (6a) can rotate toward the direction of the two road wheels (2) on the mounting frame (1) , and a trigger mechanism (7) for driving the rotation of the rotation member (6a) by the movement of the road wheel (2) is also provided between the first connection mechanism (4) and the rotation member (6a). 2. The wheel adjustment assembly of a kind of agricultural lawnmower according to claim 1, characterized in that, the movable block (6a4) is in a hexagonal block structure, and a square opening is provided on the rotating shaft (6a3) along its axial direction, The movable block (6a4) is inserted on the square opening through a square-shaped insertion rod (6a41) that fits into the square opening, and a fixed disc (6a31) is also provided on the end of the rotating shaft (6a3) near the movable block (6a4), Moreover, a spring (6a43) is sheathed on the insertion rod (6a41) and between the fixed disc (6a31) and the movable block (6a4). 3. A wheel adjustment assembly for an agricultural lawnmower according to claim 2, characterized in that the withdrawal mechanism (6c) includes a threaded sleeve (6c1) arranged on the mounting frame (1) and threaded on the The screw rod (6c2) in the threaded sleeve (6c1), the threaded sleeve (6c1) can rotate along the rotation direction of the movable disc (6b2) on the mounting frame (1), and the mounting frame (1) is also provided with a The second rotary driver (6c3) that drives the threaded sleeve (6c1) to rotate, the screw rod (6c2) is coaxially inserted in the square opening of the rotating shaft (6a3), and the diameters of the screw rod (6c2) and the threaded sleeve (6c1) are both smaller than the square opening The size of the screw (6c2) is also provided with a ball (6c21) near the end of the insert rod (6a41) on the movable block (6a4), and the end of the insert rod (6a41) inserted into the square opening is also provided with a ball that can accommodate the circle The round mouth (6a42) of ball (6c21), the depth of round mouth (6a42) is also greater than the diameter of steel ball. 4. The wheel adjustment assembly of an agricultural lawnmower according to claim 3, characterized in that, the surface of the fixed disc (6a31) is provided with a movable block (6a4) to trigger and control the second rotary driver (6c3) to start. The first inductive switch (6a32) for stopping, on the movable disk (6b2) and in the bayonet (6b21), there is also a movable block (6a4) to trigger and control the first rotary driver (6b3) and the second rotary driver (6c3 ) The second induction switch (6b22) that starts and stops at the same time. 5. The wheel adjustment assembly of an agricultural lawnmower according to claim 1, characterized in that, the first connecting mechanism (4) includes a sleeve rod (4a) and a telescopic rod (4b), and the sleeve rod (4a) One end is hinged on a first hinged seat (4a1) and the first hinged seat (4a1) is fixed on the traveling driving device (3), and one end of the telescopic rod (4b) is movably inserted in the sleeve rod (4a), telescopic The other end of the rod (4b) is hinged on a second hinged seat (4b1) and the second hinged seat (4b1) is fixed on the mounting frame (1), and one end of the trigger mechanism (7) is connected to the telescopic rod (4b) superior. 6. The wheel adjustment assembly of an agricultural lawn mower according to claim 5, characterized in that the trigger mechanism (7) includes a pull rod (7a), and one end of the pull rod (7a) passes through a hinged rod (7a1 ) is hinged on the protruding end of the cam (6a1), the other end of the pull rod (7a) is hinged on a sleeve (7b) and the sleeve (7b) is sleeved on the telescopic rod (4b), and the pull rod (7a) A fixed sleeve (7c) fixed on the mounting frame (1) is sheathed on the top, and the moving direction of the pull rod (7a) is perpendicular to the moving direction of the movable block (6a4). 7. The wheel adjustment assembly of an agricultural lawnmower according to claim 5, characterized in that, the second connecting mechanism (5) includes a connecting frame (5a), and the connecting frame (5a) is connected by a high-strength bolt (5a1 ) is fixed on the mounting frame (1), and a connecting rod (5b) in a parallelogram structure is also hingedly connected between the connecting frame (5a) and each walking drive device (3), and every two connecting rods (5b ) are also fixedly provided with connecting plates (5c) for stabilizing the connecting rods (5b). 8. A wheel adjustment assembly for an agricultural lawn mower according to claim 7, characterized in that the traveling drive device (3) includes a fixed frame (3a) and a bogie (3b), and the first hinged seat (4a1 ) and connecting rod (5b) are connected on the fixed frame (3a), the bogie (3b) can rotate on the fixed frame (3a), and the fixed frame (3a) is also provided with a drive frame (3b) The third rotary drive (3a1) rotates, the road wheel (2) can rotate on the bogie (3b), and the bogie (3b) is also provided with a fourth rotary drive for driving the road wheel (2) to rotate (3b1).

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