A tire dismounting and carrying fork apparatus for large trackless rubber-tyred vehicles

Abstract

The present application belongs to the technical field of forklifts, and specifically relates to a large-scale trackless rubber-tyred vehicle tire dismounting and carrying forklift accessory. The forklift accessory comprises a tire clamping mechanism, a tire rotating mechanism, a tire 0-90 DEG turnover frame, a suspension mechanism, and a tire left-right transverse adjusting mechanism. The tire clamping mechanism is used for clamping a tire, and is installed on the tire rotating mechanism. The tire rotating mechanism is used for allowing the tire clamping mechanism to rotate by 20 DEG on the axis. The tire rotating mechanism is installed on the tire 0-90 DEG turnover frame. The tire 0-90 DEG turnover frame is used for allowing the tire clamping mechanism to turn by 0-90 DEG. The tire 0-90 DEG turnover frame is installed on the suspension mechanism. The suspension mechanism is provided with the tire left-right transverse adjusting mechanism which allows the tire 0-90 DEG turnover frame to move left-right transversely. The present application can satisfy the installation of tires of different specifications, different sizes and different weights.

Description

Technical Field

[0001] This invention patent belongs to the field of forklift technology, specifically a forklift attachment for handling large trackless rubber-wheeled vehicles by removing and assembling tires. Background Technology

[0002] Trackless rubber-tired vehicles are widely used in mining areas due to their superior performance and strong climbing ability, meeting various working conditions underground. Explosion-proof vehicles for coal mines come in many varieties, with load capacities ranging from 2 tons to 100 tons, and therefore using different tire specifications. For vehicles with relatively small load capacities, tire installation and removal can be completed without auxiliary tools; however, for vehicles with large load capacities and large tire specifications, tire installation and removal must be done with auxiliary tools.

[0003] Traditionally, large-size tires require manual installation and removal, often aided by tools such as vehicles, pry bars, sledgehammers, and slings.

[0004] To avoid the risk of injury from falling large tires, improve disassembly and assembly efficiency, and reduce labor costs, a set of tire handling forklift attachments and assembly methods were designed. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides an attachment and assembly method for a forklift used for disassembling and assembling tires on large trackless rubber-tired vehicles.

[0006] The present invention adopts the following technical solution: an attachment for a large trackless rubber-tired vehicle tire disassembly and assembly forklift, comprising a tire clamping mechanism, a tire rotating mechanism, a tire 0-90° flipping frame, a suspension mechanism, and a tire left-right lateral adjustment mechanism. The tire clamping mechanism is used to clamp the tire and is mounted on the tire rotating mechanism. The tire rotating mechanism is used to allow the tire clamping mechanism to rotate axially from -20° to 20°. The tire rotating mechanism is mounted on the tire 0-90° flipping frame and is used to allow the tire clamping mechanism to flip from 0 to 90°. The tire 0-90° flipping frame is mounted on the suspension mechanism, and the suspension mechanism is provided with a tire left-right lateral adjustment mechanism that allows the tire 0-90° flipping frame to move left and right laterally.

[0007] In some embodiments, the tire clamping mechanism includes a slewing support outer ring connecting front plate fixed to the tire rotation mechanism, a slewing support front fixing frame fixed to the front side of the slewing support outer ring connecting front plate, and a tire right clamping arm and a tire left clamping arm fixed to both sides of the slewing support front fixing frame, respectively.

[0008] In some embodiments, the front fixing frame of the slewing support includes two E-shaped groove plates welded and fixed at the upper and lower positions of the front plate connected to the outer ring of the slewing support. The bottom of the upper E-shaped groove plate and the upper part of the lower E-shaped groove plate are respectively welded with cylinder connecting lugs, and the two E-shaped groove plates are welded at different positions.

[0009] In some embodiments, the right tire clamping arm includes a right T-shaped guide plate disposed within two E-shaped grooves. A right T-shaped guide plate base is welded between the upper and lower right T-shaped guide plates. A cylinder connecting lug connected to a drive cylinder is fixed on one side of the right T-shaped guide plate base, and a right arc-shaped plate base is connected to the other side. An arc-shaped plate is disposed on the right arc-shaped plate base. Several arc-shaped plate reinforcing ribs are welded between the arc-shaped plate and the right arc-shaped plate base. Several arc-shaped plate reinforcing steel bars are evenly welded on the side of the arc-shaped plate that clamps the tire. The left tire clamping arm has the same structure as the right tire clamping arm, but is disposed in the opposite direction.

[0010] In some embodiments, the tire rotation mechanism includes a slewing support outer ring and a slewing support inner ring. The slewing support outer ring and the slewing support inner ring are coaxially arranged and are an integral structure. One side of the slewing support outer ring is integrally connected to the slewing support outer ring connecting front plate. One side of the slewing support inner ring is fixedly installed on the tire 0-90° flipping frame. A toothed ring is provided on the periphery of the slewing support outer ring, which meshes with the gear of the swing cylinder.

[0011] In some embodiments, the tire 0-90° tilting frame includes a slewing support inner ring connecting plate fixed to the tire rotation mechanism and a tilting cylinder frame rear plate connected to the suspension mechanism. Two sets of tilting cylinder rod connecting ears I are symmetrically arranged on the rear side of the slewing support inner ring connecting plate, and two sets of tilting cylinder barrel connecting ears II are arranged on the front side of the tilting cylinder frame rear plate. A tilting cylinder is connected between the tilting cylinder rod connecting ears I and the tilting cylinder barrel connecting ears II. A tilting hinge pin is provided at the front end of the tilting cylinder barrel connecting ear II, and is hinged to the bottom of the tilting cylinder rod connecting ear I through the tilting hinge pin.

[0012] In some embodiments, the rear side of the rear plate of the tilting cylinder frame is symmetrically provided with an upper guide rail beam and a lower guide rail beam for the forklift suspension mechanism; the suspension mechanism includes a main board with a hollowed-out center, and upper and lower ears of the suspension mechanism are symmetrically provided on the upper and lower sides of the main board. The upper and lower ears of the suspension mechanism are respectively connected to the upper guide rail beam and the lower guide rail beam of the forklift suspension mechanism. A suspension mechanism connecting beam and a suspension mechanism displacement adjusting beam are connected to the hollowed-out center of the main board. The suspension mechanism displacement adjusting beam is connected to the left and right lateral adjustment mechanism of the tire.

[0013] In some embodiments, the tire lateral displacement adjustment mechanism includes a double telescopic cylinder barrel fixed on the displacement adjustment beam of the suspension mechanism, and the two ends of the double telescopic cylinder barrel are respectively connected to two sets of double telescopic cylinder rod fixing lugs installed on the rear side of the rear plate of the tilting cylinder frame.

[0014] In some embodiments, the suspension mechanism displacement adjustment beam is located in the middle of the openwork of the main board of the suspension mechanism, and the suspension mechanism displacement adjustment beam is provided with a double telescopic cylinder connecting lug for fixing the cylinder barrel of the double telescopic cylinder.

[0015] Compared with existing technologies, this invention suspends this attachment on a forklift, which can accommodate the installation of tires of different specifications, sizes, and weights. Through hydraulic control, by operating different control handles on the forklift, various functions can be achieved, such as clamping from the ground, flipping from 0 to 90 degrees, rotating axially from -20 degrees to 20 degrees, and adjusting the left and right displacement of the tires. Attached Figure Description

[0016] Figure 1 General drawing of forklift attachments for tire removal and handling of trackless rubber-tired vehicles;

[0017] Figure 2 Lean forward 90 degrees ° Forklift attachment location diagram;

[0018] Figure 3 For tire clamping mechanism;

[0019] Figure 4 Right clamping arm for the tire;

[0020] Figure 5 Left clamping arm for the tire;

[0021] Figure 6 For the front fixed frame of the slewing support;

[0022] Figure 7 It is an axial rotation mechanism with a range of -20° to 20°.

[0023] Figure 8 For slewing support components;

[0024] Figure 9 A tire 0-90° tilting frame;

[0025] Figure 10 For connecting the suspension mechanism of the forklift;

[0026] Figure 11 This is a lateral adjustment mechanism for the tires.

[0027] Figure 12 This is a schematic diagram of the hydraulic control principle.

[0028] In the diagram, 1-Tire clamping mechanism, 2-Tire rotation mechanism, 3-Tire 0~90° flipping frame, 4-Suspension mechanism, 5-Tire left and right lateral displacement adjustment mechanism, 13-Swing cylinder multi-way valve, 14-Flipping cylinder multi-way valve, 15-Clamping cylinder multi-way valve, 16-Balance valve, 17-Swing cylinder, 18-Flipping cylinder, 19-Tire clamping cylinder, 20-Side shifting cylinder multi-way valve, 21-Side shifting double telescopic cylinder;

[0029] 101-Slewing bearing outer ring connecting front plate, 102-E-shaped groove plate, 103-Right T-shaped guide plate, 104-Cylinder connecting lug, 105-Cylinder connecting pin, 106-Right T-shaped guide plate base, 107-Reinforcing rib plate, 108-Right arc plate base, 109-Arch plate, 110-Arch plate reinforcing rib, 112-Clamping cylinder pin clamping plate, 113-Left T-shaped guide plate, 114-Left T-shaped guide plate base, 115-Left arc plate base, 116-Arch plate reinforcing steel bar;

[0030] 201 - Outer ring of slewing bearing; 202 - Inner ring of slewing bearing; 203 - Connecting bolt of slewing bearing; 204 - Connecting washer of slewing bearing.

[0031] 301-Slewing bearing inner ring connecting plate, 302-Hydraulic component fixing plate, 303-Tilting cylinder rod connecting lug I, 304-Tilting cylinder barrel connecting lug rib plate, 305-Tilting cylinder barrel connecting lug II, 306-Tilting cylinder lug intermediate connecting plate, 307-Forklift suspension mechanism upper guide rail beam, 308-Forklift suspension mechanism lower guide rail beam, 309-Double telescopic cylinder rod fixing lug, 310-Tilting cylinder frame rear plate, 311-Tilting cylinder barrel pin, 312-Tilting cylinder barrel pin retaining plate, 313-Tilting hinge pin, 314-Tilting hinge pin retaining plate, 315-Tilting cylinder rod pin;

[0032] 401-Suspension mechanism main board, 402-Suspension mechanism upper ear, 403-Suspension mechanism lower ear, 404-Double telescopic cylinder cylinder barrel connecting ear, 405-Suspension mechanism connecting beam, 406-Suspension mechanism displacement adjusting beam;

[0033] 501 - Double telescopic cylinder barrel, 502 - Bolt for connecting cylinder barrel, 503 - Washer for connecting cylinder barrel, 504 - Bolt telescopic cylinder rod. Detailed Implementation

[0034] The purpose of this invention is to provide a forklift attachment and assembly method for handling and disassembling tires on trackless rubber-tired vehicles used in coal mines. This attachment, suspended on the forklift, can accommodate the installation of tires of different specifications, sizes, and weights. Through hydraulic control, operating different control handles on the forklift enables various functions such as ground clamping, 0-90° rotation, axial rotation from -20° to 20°, and left / right tire displacement adjustment.

[0035] Forklift attachments:

[0036] The trackless rubber-tired forklift attachment mainly consists of a tire clamping mechanism, an axial -20° to 20° rotation mechanism, a tire 0 to 90° tilting frame, a suspension mechanism connecting the forklift, a tire left and right lateral adjustment mechanism, and a new forklift hydraulic system.

[0037] 1. Tire clamping mechanism

[0038] The tire clamping mechanism primarily clamps the tire by adjusting the distance between the left and right clamping arms using the tire clamping cylinder 19, based on the size and specifications of the tire to be installed or removed. The specific structure is as follows:

[0039] (1) Two E-shaped groove plates 102 are welded at the upper and lower positions of the outer ring connecting front plate 101 of the slewing support. Cylinder connecting ears 104 are welded at different positions on the two E-shaped groove plates. The outer ring connecting front plate 101 of the slewing support, the E-shaped groove plate 102 and the cylinder connecting ears 104 form the welding assembly of the front fixed frame of the slewing support.

[0040] (2) Two right T-shaped guide plates 103 are welded to one side of the right T-shaped guide plate base 106 at the upper and lower positions, and cylinder connecting lugs 104 are also welded thereon. On the other side of the right T-shaped guide plate base 106, an arc-shaped plate base 108 is welded, and an arc-shaped plate 109 is welded to the right arc-shaped plate base 108. Several arc-shaped plate reinforcing ribs 110 are welded between the arc-shaped plate and the base to increase the stability of the arc-shaped plate welding. Several arc-shaped plate reinforcing steel bars 116 are evenly welded to the side of the arc-shaped plate that holds the tire to increase friction and ensure the stability of the tire holding. These components are combined and welded to form the right tire clamping arm.

[0041] (3) In the same way, the left T-shaped guide plate assembly 114, two left T-shaped guide plates 113, left arc-shaped base 115, clamping cylinder connecting ear 104, arc plate 109, arc plate reinforcing rib 110, arc plate reinforcing steel bar 116 and other parts are welded together to form the tire left clamping arm.

[0042] The T-shaped guide plates on the left and right tire clamping arms are respectively inserted into the E-shaped groove plates in the front fixed frame of the slewing support. This combination of E-shaped grooves and T-shaped steel structures provides high structural strength and stable operation. Two clamping cylinders are respectively connected to the connecting ears on the left and right clamping arms and the connecting ears on the front fixed frame of the slewing support to form a tire clamping structure. The stroke of the clamping cylinder 19 is controlled by the multi-way valve 15 of the clamping cylinder, thereby adjusting the distance between the left and right clamping arms of the tire to achieve clamping of tires of different specifications and sizes.

[0043] The clamping cylinder multi-way valve 15 can achieve positioning control, ensuring that the tire is always clamped and that large tires will not slip off due to oil compression or leakage.

[0044] 2. Axial rotation mechanism -20° to 20°

[0045] The tire rotation mechanism achieves the rotation of the tire clamping mechanism around its center while keeping the tire tilting frame fixed from 0 to 90 degrees. The function is implemented as follows:

[0046] The outer ring 201 of the slewing support is connected to the front plate 101 of the outer ring of the slewing support via the slewing support connecting bolts 203 and the slewing support connecting washers 204, forming a single unit. The inner ring 202 of the slewing support is connected to the inner ring connecting plate 301 of the slewing support via bolts and washers, forming a single unit. The rotation of the slewing cylinder 17 is controlled by the multi-way valve 13 of the slewing cylinder through the meshing of the gear with the outer gear ring of the slewing support, thereby controlling the rotation of the tire clamping mechanism and aligning the tire bolts with the hub holes.

[0047] 3. Tire 0-90° tilting frame

[0048] The tire 0-90° rotation function is mainly achieved by controlling the stroke of two rotation cylinders 18 through the multi-way valve 14 of the rotation cylinder to realize the 0-90° rotation of the tire clamping mechanism. The specific structure is as follows:

[0049] (1) The rotating support inner ring connecting plate 301, the four rotating cylinder rod connecting lugs, and the hydraulic component fixing plate are welded together to form the 0-90° rotating frame's rotatable part.

[0050] (2) The four cylinder barrel connecting ears 303, the two cylinder barrel connecting ears rib plate 304, the middle connecting plate of the cylinder barrel connecting ears 306, the rear plate of the cylinder barrel connecting ears 310, the upper guide rail beam of the forklift suspension mechanism 307, the lower guide rail beam of the forklift suspension mechanism 308, and the two double telescopic cylinder rod fixing ears 309 are welded together to form the fixed part of the 0-90° tilting frame.

[0051] (3) The rotatable part of the 0-90° flip frame is connected to the fixed part of the 0-90° flip frame through the flip hinge pin 313 and the clamping plate 314 that controls the rotation of the flip hinge pin, so as to realize the rotation of the fixed part and the rotatable part.

[0052] (4) Connect one end of the cylinder barrel of the two cylinders to the cylinder barrel connecting lug of the tilting cylinder through the cylinder barrel pin 311 of the tilting cylinder, and connect the other end of the cylinder rod to the cylinder rod connecting lug of the tilting cylinder through the cylinder rod pin 315 of the tilting cylinder. The rotation control of the pin is achieved by the cylinder barrel pin clamping plate 312 of the tilting cylinder.

[0053] (5) The 0-90° flipping of the flipping part of the 0-90° flipping frame is achieved by hydraulically controlling the extension and retraction of the rotating cylinder.

[0054] (6) A balance valve 16 is installed between the multi-way valve 14 of the tilting cylinder and the tilting cylinder 18 to ensure that the speed of the large tire is stable during the tilting process, so that it will not suddenly shake or fall when it loses power, and the safety performance is more reliable.

[0055] 4. Suspension mechanism connecting the forklift

[0056] This mechanism is welded together from the following components: a main suspension plate 401 (with both ends capable of engaging with the guide grooves in the upper guide beam 307 and lower guide beam 308 of the forklift suspension mechanism), an upper suspension lug 402, a lower suspension lug 403, two suspension connecting beams 405, two suspension displacement adjusting beams 406, and two double telescopic hydraulic cylinder connecting lugs 404. The displacement adjusting beams are positioned according to the different displacements adjusted, connecting to the forklift suspension mechanism.

[0057] 5. Tire lateral adjustment mechanism

[0058] Lateral adjustment of the tire is achieved by controlling the stroke of the cylinder rod of the lateral telescopic cylinder 21 via the multi-way valve 20. The cylinder barrel 501 of the lateral telescopic cylinder is connected to the cylinder barrel connecting lug fixed to the forklift suspension mechanism via connecting bolts 502 and connecting washers 503. The cylinder rod is connected to the cylinder rod fixing lug welded to the tire 0-90° tilting frame. Adjusting the cylinder rod stroke achieves the horizontal displacement of the tire 0-90° tilting frame, thereby displacing the tire clamping mechanism.

[0059] Tire assembly method:

[0060] A method for assembling tires for large mining rubber-tired equipment uses a forklift as the main transport vehicle and trackless rubber-tired vehicle tire disassembly, assembly, and handling forklift attachments as tools.

[0061] The clamping cylinder, tilting cylinder, swinging cylinder, and lateral shifting cylinder can be used to perform actions such as clamping, transporting, tilting, rotating, and lateral shifting of tires.

[0062] The forklift moves to the large tire storage area, operates the hydraulic control handle, opens the tilting cylinder, so that the tilting frame is at 90° with the forklift, opens the tire clamping mechanism, clamps the tire by retracting the clamping cylinder, and then retracts the tilting cylinder, so that the tilting frame is at 0° with the forklift.

[0063] The forklift clamps the tire and moves it to the reducer or wheel-side motor of the rubber-tired equipment. The hydraulic control handle is operated to control the overall movement of the attachment, ensuring that the center of the tire is directly aligned with the reducer or wheel-side motor.

[0064] The forklift travels forward, gradually transporting the tire to the reducer or wheel-side motor stop. The hydraulic control handle is operated to control the swing cylinder to rotate the tire. Rotation stops when the rim bolt hole is aligned with the tire bolt.

[0065] As the forklift continues to move forward, the tire bolts can be inserted into the rim bolt holes, and the tire nuts tightened. The tire is then successfully installed onto the gearbox or wheel-side motor.

[0066] The tire rotation is achieved using a non-uniformly distributed external tooth rotary support and a swing cylinder. The outer ring of the rotary support uses a non-uniformly distributed local external tooth rotary mechanism, which allows the swing cylinder to be adapted to different installation spaces and to adjust the drive and engagement positions 360 degrees at will. By making reasonable use of the swing cylinder's low-speed stability and the requirement for a small swing range when the attachment is installing the tire, the traditional mechanism of 360-degree uniformly distributed external tooth transmission is optimized. This effectively saves on the manufacturing cost of the rotary mechanism and reduces the total weight of the attachment.

Claims

1. A tire changing and handling fork attachment for large trackless rubber tired vehicles, characterized in that: The system includes a tire clamping mechanism (1), a tire rotating mechanism (2), a tire 0-90° flipping frame (3), a suspension mechanism (4), and a tire left-right lateral displacement adjustment mechanism (5). The tire clamping mechanism (1) is used to clamp the tire. The tire clamping mechanism (1) is mounted on the tire rotating mechanism (2). The tire rotating mechanism (2) is used to rotate the tire clamping mechanism (1) axially from -20° to 20°. The tire rotating mechanism (2) is mounted on the tire 0-90° flipping frame (3). The tire 0-90° flipping frame (3) is used to flip the tire clamping mechanism (1) from 0 to 90°. The tire 0-90° flipping frame (3) is mounted on the suspension mechanism (4). The suspension mechanism (4) is provided with a tire left-right lateral displacement adjustment mechanism (5) that allows the tire 0-90° flipping frame (3) to move left and right laterally. The tire clamping mechanism (1) includes a rotary support outer ring connecting front plate (101) fixed to the tire rotation mechanism (2). A rotary support front fixing frame is fixed on the front side of the rotary support outer ring connecting front plate (101). A tire right clamping arm and a tire left clamping arm are fixed on both sides of the rotary support front fixing frame, respectively. The front fixing frame of the slewing support includes two E-shaped groove plates (102) welded and fixed at the upper and lower positions of the front plate (101) of the outer ring of the slewing support. The bottom of the upper E-shaped groove plate (102) and the upper part of the lower E-shaped groove plate (102) are respectively welded with cylinder connecting ears (104). The two E-shaped groove plates (102) are welded at different positions. The tire 0-90° flipping frame (3) includes a slewing support inner ring connecting plate (301) fixed to the tire rotation mechanism (2) and a flipping cylinder frame rear plate (310) connected to the suspension mechanism (4). Two sets of flipping cylinder rod connecting ears I (303) are symmetrically arranged on the rear side of the slewing support inner ring connecting plate (301). Two sets of flipping cylinder barrel connecting ears II (305) are arranged on the front side of the flipping cylinder frame rear plate (310). A flipping cylinder is connected between the flipping cylinder rod connecting ear I (303) and the flipping cylinder barrel connecting ear II (305). A flipping hinge pin (313) is provided at the front end of the flipping cylinder barrel connecting ear II (305). The flipping hinge pin (313) is hinged to the bottom of the flipping cylinder rod connecting ear I (303).

2. The tire changing and handling fork attachment for large trackless rubber tired vehicles of claim 1 wherein: The right tire clamping arm includes a right T-shaped guide plate (103) set in two E-shaped groove plates (102). A right T-shaped guide plate base (106) is welded between the upper and lower right T-shaped guide plates (103). A cylinder connecting lug (104) connected to the driving cylinder is fixed on one side of the right T-shaped guide plate base (106), and a right arc plate base (108) is connected on the other side. An arc plate is set on the right arc plate base (108). Several arc plate reinforcing ribs (110) are welded between the arc plate (109) and the right arc plate base (108). Several arc plate reinforcing steel bars (116) are evenly welded on the side of the arc plate (109) that clamps the tire. The left tire clamping arm has the same structure as the right tire clamping arm, but the direction of the setting is opposite.

3. The forklift attachment for handling and removing tires on large trackless rubber-tired vehicles according to claim 1, characterized in that: The tire rotation mechanism (2) includes a slewing support outer ring (201) and a slewing support inner ring (202). The slewing support outer ring (201) and the slewing support inner ring (202) are coaxially arranged and are an integral structure. One side of the slewing support outer ring (201) is connected to the slewing support outer ring connecting front plate (101) as an integral unit. One side of the slewing support inner ring (202) is fixedly installed on the tire 0-90° flipping frame (3). A toothed ring is provided on the circumference of the slewing support outer ring (201), and the toothed ring meshes with the gear of the swing cylinder (17).

4. The forklift attachment for handling and removing tires on large trackless rubber-tired vehicles according to claim 1, characterized in that: The rear plate (310) of the tilting cylinder frame is symmetrically provided with an upper guide rail beam (307) and a lower guide rail beam (308) for the forklift suspension mechanism; the suspension mechanism (4) includes a main board (401) with a hollowed-out center. The main board (401) is symmetrically provided with an upper ear (402) and a lower ear (403) for the suspension mechanism. The upper ear (402) and the lower ear (403) are respectively connected to the upper guide rail beam (307) and the lower guide rail beam (308) for the forklift suspension mechanism. The main board (401) is connected with a connecting beam (405) and a displacement adjustment beam (406) for the suspension mechanism. The displacement adjustment beam (406) is connected to the left and right lateral displacement adjustment mechanism (5) of the tire.

5. The forklift attachment for handling and removing tires on large trackless rubber-tired vehicles according to claim 4, characterized in that: The tire lateral displacement adjustment mechanism (5) includes a double telescopic cylinder barrel (501) fixed on the displacement adjustment beam (406) of the suspension mechanism. The two ends of the double telescopic cylinder barrel (501) are respectively connected to two sets of double telescopic cylinder rod fixing ears (309) installed on the rear side of the rear plate (310) of the tilting cylinder frame.

6. The forklift attachment for handling and removing tires on large trackless rubber-tired vehicles according to claim 5, characterized in that: The suspension mechanism displacement adjustment beam (406) is located in the middle of the hollowed-out suspension mechanism main board (401), and the suspension mechanism displacement adjustment beam (406) is provided with a double telescopic cylinder connecting lug (404) for fixing the double telescopic cylinder barrel (501).

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