Wheel track adjusting device for rear wheels of wheeled tractor

Abstract

The utility model relates to the technical field of tractors, in particular to a wheel track adjusting device for rear wheels of a wheeled tractor, which comprises a mounting seat, a fixing ring, a limit rod, a sealing gasket, an abutting block and a moving component, the mounting seat is fixedly mounted on a hydraulic cylinder, the fixing ring is fixedly mounted on the mounting seat, the limit rod is fixedly mounted on a piston rod, and the sealing gasket is fixedly mounted on the piston rod. The moving assembly is arranged on the fixing ring, the moving assembly drives the resisting block to move, the resisting block moves to make contact with the limiting rod, and therefore the limiting rod is resisted and fixed, the limiting rod is matched with the resisting block, the piston rod is limited, and displacement of the piston rod is avoided; the problems that after a piston rod of an existing device is adjusted, in the using process of a vehicle, hydraulic oil in a hydraulic cylinder easily fluctuates, so that the piston rod moves, and then a rim moves are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of tractors, in particular to a rear wheel track adjusting device for a wheeled tractor. Background Technique

[0002] In recent years, four-wheel tractors have been widely used due to their large traction power, high traction efficiency, and the ability to be equipped with a variety of agricultural implements to complete farm operations such as rotary tillage, ridging, fertilizing, and sowing. When operating in the field, since the row spacings required for various crop ridging and transplanting operations are different, when the four-wheel tractor is transporting in the field and running on flat ground, the track of the tractor should be as wide as possible to increase stability. Therefore, it is required that the track of the tractor can be adjusted in time to meet the needs of different occasions.

[0003] The existing patent No. CN203637453U discloses a rear wheel spacing adjusting device for a wheeled tractor, which includes a hydraulic adjusting device, a sliding bearing, a sleeve, and a rim. The hydraulic adjusting device is composed of two sets of structurally identical mechanisms symmetric about the wheel axis, and each set of mechanisms includes a support frame, a hydraulic cylinder, a piston rod, an oil inlet pipe, and an oil outlet pipe. The hydraulic adjusting device is composed of two sets of structurally identical mechanisms symmetric about the wheel axis, which can make the rim evenly stressed and prevent the phenomenon of skewing and jamming on the wheel axle.

[0004] In the above-mentioned manner, after the adjustment is completed, during the use of the vehicle, the hydraulic oil inside the hydraulic cylinder is prone to fluctuate, resulting in the movement of the piston rod and further the movement of the rim. Summary of the Invention

[0005] The purpose of the utility model is to provide a rear wheel track adjusting device for a wheeled tractor, which solves the problem that after the adjustment of the piston rod of the existing device is completed, during the use of the vehicle, the hydraulic oil inside the hydraulic cylinder is prone to fluctuate, resulting in the movement of the piston rod and further the movement of the rim.

[0006] To achieve the above purpose, the utility model provides a rear wheel track adjusting device for a wheeled tractor, which includes a hydraulic cylinder and a piston rod, and the piston rod is slidably connected to the hydraulic cylinder.

[0007] Among them, a limiting mechanism is further included. The limiting mechanism includes a mounting seat, a fixing ring, a limiting rod, a sealing gasket, a resisting block, and a moving component. The mounting seat is fixedly installed on the hydraulic cylinder, the fixing ring is fixedly installed on the mounting seat, the limiting rod is fixedly installed on the piston rod, the sealing gasket is slidably connected to the limiting rod, the resisting block abuts against the limiting rod, and the moving component is arranged on the fixing ring.

[0008] Among them, the moving component includes a screw rod, a rotating disc and a driving member. The screw rod is threadedly connected to the fixed ring, the screw rod is movably connected to the resisting block, the rotating disc is fixedly installed on one side of the screw rod away from the resisting block, and the driving member is arranged on the fixed ring.

[0009] Among them, the driving member includes a grip, a magnetic ring, a magnet and a guiding component. The magnetic ring is fixedly installed on the fixed ring, the grip is slidably connected to the rotating disc, the magnet is fixedly installed on one side of the grip close to the magnetic ring, the magnetic ring is magnetically connected to the magnet, and the guiding component is arranged on the mounting seat.

[0010] Among them, the guiding component includes a guiding block, a guiding groove and a protective element. The guiding block is fixedly installed on the limiting rod, the guiding groove is located on the mounting seat, the guiding block matches the guiding groove, and the protective element is arranged on the mounting seat.

[0011] Among them, the protective element includes an adsorption pad and a protective pad. The protective pad is fixedly installed on the mounting seat, and the adsorption pad is fixedly installed on the resisting block.

[0012] For a wheeled tractor rear wheel track adjusting device of the present utility model, pulling the grip causes the magnet to be disengaged from the magnetic ring. The rotating disc is driven to rotate through the grip, the screw rod is driven to rotate by the rotation of the rotating disc, the resisting block is driven to move by the rotation of the screw rod, and the resisting block moves into contact with the limiting rod, thereby resisting and fixing the limiting rod. The limiting rod and the resisting block cooperate to limit the piston rod, avoiding the displacement of the piston rod, and solving the problem that after the piston rod of the existing device is adjusted, during the use of the vehicle, the hydraulic oil inside the hydraulic cylinder is prone to fluctuate, thereby causing the piston rod to move, and further causing the rim to move. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art.

[0014] Figure 1 is a schematic structural diagram of the wheeled tractor rear wheel track adjusting device of the present utility model.

[0015] Figure 2 is Figure 1 an enlarged view of part A of

[0016] Figure 3 is a schematic structural diagram of the limiting mechanism of the wheeled tractor rear wheel track adjusting device of the present utility model.

[0017] In the figure: 101 - hydraulic cylinder, 102 - piston rod, 103 - mounting seat, 104 - fixing ring, 105 - limiting rod, 106 - gasket, 107 - resisting block, 108 - screw rod, 109 - rotating disk, 110 - grip, 111 - magnetic ring, 112 - magnet, 113 - guiding groove, 114 - guiding block, 115 - protective pad, 116 - adsorption pad. Detailed implementation mode

[0018] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention and should not be construed as a limitation to the present invention.

[0019] Please refer to Figures 1 - 3 , Figure 1 which is a schematic structural diagram of the rear wheel track adjustment device of the wheeled tractor of the present invention, Figure 2 is Figure 1 the enlarged view of part A of Figure 3 which is a schematic structural diagram of the limiting mechanism of the rear wheel track adjustment device of the wheeled tractor of the present invention.

[0020] This embodiment provides a rear wheel track adjustment device for a wheeled tractor, including a hydraulic cylinder 101, a piston rod 102 and a limiting mechanism. The limiting mechanism includes a mounting seat 103, a fixing ring 104, a limiting rod 105, a gasket 106, a resisting block 107 and a moving component. The moving component includes a screw rod 108, a rotating disk 109 and a driving member. The driving member includes a grip 110, a magnetic ring 111, a magnet 112 and a guiding component. The guiding component includes a guiding block 114, a guiding groove 113 and a protective element. The protective element includes an adsorption pad 116 and a protective pad 115. Through the foregoing solution, the problem that after the piston rod 102 of the existing device is adjusted, during the use of the vehicle, the hydraulic oil inside the hydraulic cylinder 101 is prone to fluctuate, thereby causing the piston rod 102 to move and further causing the rim to move is solved. It can be understood that the foregoing solution can be used in the prospect of the locking problem of the rear wheel track adjustment device of the wheeled tractor.

[0021] In this embodiment, the piston rod 102 is slidably connected to the hydraulic cylinder 101, and the piston rod 102 is limited by the cooperation of the resisting block 107 and the limiting rod 105 to prevent the piston rod 102 from displacing.

[0022] Among them, the mounting seat 103 is fixedly installed on the hydraulic cylinder 101, the fixing ring 104 is fixedly installed on the mounting seat 103, the limiting rod 105 is fixedly installed on the piston rod 102, the sealing gasket 106 is slidably connected with the limiting rod 105, the resisting block 107 abuts against the limiting rod 105, the moving assembly is arranged on the fixing ring 104, the hydraulic cylinder 101 has a limiting groove, the sealing gasket 106 is located at the limiting groove, the limiting rod 105 penetrates through the limiting groove, and the sealing gasket 106 prevents hydraulic oil from leaking at the mating part of the limiting rod 105 and the hydraulic cylinder 101. During use, the resisting block 107 is driven to move by the moving assembly, and the resisting block 107 moves into contact with the limiting rod 105, thereby resisting and fixing the limiting rod 105. The limiting rod 105 cooperates with the resisting block 107 to limit the piston rod 102 and prevent the piston rod 102 from displacing, solving the problem that after the piston rod 102 of the existing device is adjusted, during the use of the vehicle, the hydraulic oil inside the hydraulic cylinder 101 is prone to fluctuate, resulting in the movement of the piston rod 102 and further causing the movement of the rim.

[0023] Secondly, the screw rod 108 is threadedly connected with the fixing ring 104, the screw rod 108 is movably connected with the resisting block 107, the rotating disk 109 is fixedly installed on the side of the screw rod 108 away from the resisting block 107, the driving member is arranged on the fixing ring 104, and the fixing ring 104 has a threaded hole matching the screw rod 108. By driving the rotating disk 109 to rotate through the driving member, the rotating disk 109 rotates to drive the screw rod 108 to rotate, and the screw rod 108 rotates to drive the resisting block 107 to move, so as to come into contact with the limiting rod 105.

[0024] Thirdly, the magnetic ring 111 is fixedly installed on the fixing ring 104, the grip 110 is slidably connected with the rotating disk 109, the magnet 112 is fixedly installed on the side of the grip 110 close to the magnetic ring 111, the magnetic ring 111 is magnetically connected with the magnet 112, and the guiding component is arranged on the mounting seat 103. By the magnetic connection between the magnetic ring 111 and the magnet 112, the accidental dropping of the grip 110 is avoided, and the grip 110 drives the rotating disk 109 to rotate.

[0025] At the same time, the guiding block 114 is fixedly installed on the limiting rod 105, the guiding groove 113 is located on the mounting seat 103, the guiding block 114 matches the guiding groove 113, and the protective component is arranged on the mounting seat 103. Through the cooperation of the guiding block 114 and the guiding groove 113, the guiding and positioning of the limiting rod 105 are realized.

[0026] In addition, the protective pad 115 is fixedly installed on the mounting seat 103, the adsorption pad 116 is fixedly installed on the resisting block 107, the protective pad 115 abuts against the guiding block 114, the adsorption pad 116 increases the friction force with the limiting rod 105, and the protective pad 115 prevents the guiding block 114 from hitting the mounting seat 103.

[0027] When using the rear wheel track adjusting device of the wheeled tractor according to this embodiment, pull the grip 110 to disconnect the magnet 112 from the magnetic ring 111. Drive the rotating disk 109 to rotate through the grip 110. The rotation of the rotating disk 109 drives the screw rod 108 to rotate. The rotation of the screw rod 108 drives the resisting block 107 to move. The resisting block 107 moves into contact with the limiting rod 105, thereby resisting and fixing the limiting rod 105. The limiting rod 105 cooperates with the resisting block 107 to limit the piston rod 102 and prevent the piston rod 102 from displacing, solving the problem that after the existing device adjusts the piston rod 102, during the use of the vehicle, the hydraulic oil inside the hydraulic cylinder 101 is prone to fluctuate, resulting in the movement of the piston rod 102 and further causing the movement of the rim.

[0028] The above-disclosed are only one or more preferred embodiments of the present application, and the scope of rights of the present application cannot be limited thereby. Those of ordinary skill in the art can understand all or part of the processes of implementing the above embodiments, and the equivalent changes made according to the claims of the present application still fall within the scope covered by the present application.

Claims

1. A rear wheel track adjustment device for a wheeled tractor, comprising a hydraulic cylinder and a piston rod, the piston rod being slidably connected to the hydraulic cylinder, characterized in that, it further comprises a limiting mechanism; The limiting mechanism includes a mounting seat, a fixing ring, a limiting rod, a sealing gasket, a resisting block and a moving component. The mounting seat is fixedly installed on the hydraulic cylinder, the fixing ring is fixedly installed on the mounting seat, the limiting rod is fixedly installed on the piston rod, the sealing gasket is slidably connected to the limiting rod, the resisting block abuts against the limiting rod, and the moving component is arranged on the fixing ring.

2. The rear wheel track adjustment device for a wheeled tractor according to claim 1, characterized in that, The moving component includes a screw rod, a rotating disc and a driving member. The screw rod is threadedly connected to the fixing ring, the screw rod is movably connected to the resisting block, the rotating disc is fixedly installed on the side of the screw rod away from the resisting block, and the driving member is arranged on the fixing ring.

3. The rear wheel track adjustment device for a wheeled tractor according to claim 2, characterized in that, The driving member includes a grip, a magnetic ring, a magnet and a guiding component. The magnetic ring is fixedly installed on the fixing ring, the grip is slidably connected to the rotating disc, the magnet is fixedly installed on the side of the grip close to the magnetic ring, the magnetic ring is magnetically connected to the magnet, and the guiding component is arranged on the mounting seat.

4. The rear wheel track adjustment device for a wheeled tractor according to claim 3, characterized in that, The guiding component includes a guiding block, a guiding groove and a protective element. The guiding block is fixedly installed on the limiting rod, the guiding groove is located on the mounting seat, the guiding block matches the guiding groove, and the protective element is arranged on the mounting seat.

5. The rear wheel track adjustment device for a wheeled tractor according to claim 4, characterized in that, The protective element includes an adsorption pad and a protective pad. The protective pad is fixedly installed on the mounting seat, and the adsorption pad is fixedly installed on the resisting block.

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