Hydraulic steering axle of forklift

Abstract

The utility model relates to the technical field of forklifts, in particular to a hydraulic steering axle of a forklift. An installation area is arranged in the shell, the oil cylinder is horizontally installed in the installation area, cranked levers are installed at the two ends of the oil cylinder, and the cleat crutch is connected with the extending end of the oil cylinder through the cranked levers. A hub is installed on a shaft of the cleat crutch, and a tire is installed on the hub. The forklift is simple in structure and convenient to use, all the parts are welded, left turning and right turning of the forklift are controlled through the oil cylinder, the rotating angle is small, and therefore the turning diameter is small, the forklift can work in a narrow space, operation is convenient and fast, the operation difficulty is reduced, and the working flexibility, working efficiency and safety of the forklift are improved. And meanwhile, the space utilization rate is increased, operation blind areas are reduced, tire abrasion is reduced, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of forklifts, in particular to a hydraulic steering axle of a forklift. Background Art

[0002] The hydraulic steering axle of a forklift is an important part of the forklift's steering system. It drives the deflection of the forklift's steering wheel through the reciprocating motion of the hydraulic cylinder, thus achieving the forklift's steering function. The design of the hydraulic steering axle is crucial to the forklift's handling performance and stability.

[0003] Existing forklifts have a large turning angle, which makes it difficult for operators to operate in narrow spaces and easily causes collisions with surrounding objects. At the same time, the large turning angle also increases the operator's blind spot. Frequent turning operations also cause severe tire wear, seriously affecting the tire's service life. Summary of the Invention

[0004] The technical problem to be solved by the present invention is: in order to solve the problems existing in the prior art in the above-mentioned background technology, a forklift hydraulic steering axle is provided which controls the left and right turns of the forklift by an oil cylinder, has a small turning angle, and improves the flexibility of the forklift's operation.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a forklift hydraulic steering axle, including a shell, a cylinder and a clevis, the shell having an installation area, the cylinder being horizontally installed in the installation area, a crank rod being installed at both ends of the cylinder, the clevis being connected to the protruding end of the cylinder through the crank rod; a wheel hub being installed on the shaft of the clevis, and a tire being installed on the wheel hub.

[0006] Furthermore, the claw turner includes a claw turner body, and both left and right ends of the claw turner body are provided with mounting rods, and the mounting rods are both equipped with rotating wheels;

[0007] A connecting lug is installed on the upper end of the horn crutch body, and the curved rod is connected to the connecting lug by bolts;

[0008] A pawl is installed at the lower end of the horn crutch body, with the inner concave surface of the pawl facing the shell;

[0009] A mounting shaft is installed at the middle position of the cleat turn body. The mounting shaft is located on the outer surface of the cleat turn body. The wheel hub is installed on the mounting shaft and is locked by an end cover.

[0010] Furthermore, the housing includes a first housing and a second housing, the first housing and the second housing are connected by a transverse plate, and mounting bases are installed at both ends of one plate surface of the transverse plate, and the two ends of the oil cylinder are respectively clamped on the mounting bases;

[0011] Connecting plates are installed on the upper and lower end surfaces of the first shell and the second shell. A connecting shaft is installed at the middle position of each connecting plate, and the connecting shaft is connected to the vehicle frame.

[0012] Furthermore, an avoidance hole is opened on the plate surface of the horizontal plate, and the oil inlet end and the oil outlet end of the oil cylinder extend into the avoidance hole and extend out.

[0013] Furthermore, the left and right end portions of the first shell and the second shell are both arc-shaped portions, and the curvature of the arc-shaped portions matches the curvature of the rotating wheel in the claw turner.

[0014] Furthermore, a limit column is installed on the plate surface of the transverse plate, and the limit column is located below the connection between the curved rod and the oil cylinder.

[0015] Furthermore, a plurality of lug blocks are installed on the outer circumference of the hub, and screw holes are provided on the lug blocks.

[0016] Furthermore, the cross-sectional shape of the connecting shaft in the vertical direction is a frustum, the cross-sectional shape of the connecting shaft in the transverse direction is an ellipse, and the connecting shaft is a hollow structure.

[0017] Furthermore, reinforcing plates are installed on the sides of both end portions of the first shell and the second shell.

[0018] The beneficial effects of the utility model are as follows: the utility model has a simple structure and is easy to use. The various components are welded together. The left and right turns of the forklift are controlled by the oil cylinder. The turning angle is small, so the turning diameter is small, so it can work in a narrow space. The operation is convenient, the operation difficulty is reduced, and the flexibility, work efficiency and safety of the forklift are improved. At the same time, the space utilization rate is improved and the operation blind spots are reduced, thereby reducing tire wear and increasing the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 It is a structural diagram of the utility model;

[0021] Figure 2 It is an exploded view of the utility model;

[0022] Figure 3 yes Figure 2 Exploded view from the other direction;

[0023] In the figure: 2. shell, 3. clevis, 4. wheel hub, 5. oil cylinder, 6. end cover, 7. avoidance hole, 9. curved rod, 11. runner, 12. connecting ear block, 13. pawl, 14. mounting shaft, 15. first shell, 16. second shell, 17. cross plate, 18. mounting base, 19. connecting plate, 20. connecting shaft, 21. limiting column, 22. lug block. DETAILED DESCRIPTION

[0024] The present invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic diagrams that illustrate the basic structure of the present invention in a schematic manner.

[0025] like Figures 1 to 3 The hydraulic steering axle of a forklift shown includes a shell 2, a cylinder 5 and a crank 3. The shell 2 has an installation area, and the cylinder is horizontally installed in the installation area. The cylinder 5 is a double-headed cylinder, and both ends of the cylinder 5 are working ends. A crank rod 9 is installed at both ends of the cylinder 5. The crank 3 is used to prevent the wheel hub 4 from turning excessively, thereby improving the steering sensitivity of the forklift, reducing abnormal wear of the tire, and effectively preventing the occurrence of driving deviation. The crank 3 is connected to the protruding end of the cylinder 5 through the crank rod 9, and the inner concave surface of the crank rod 9 faces the cross plate 17; a wheel hub 4 is installed on the axis of the crank 3, and a tire is installed on the wheel hub.

[0026] like Figure 2 As shown, the claw turner 3 includes a claw turner body, and mounting rods are provided at both ends of the claw turner body, and a rotating wheel 11 is installed on the mounting rods to reduce plane friction;

[0027] A connecting lug 12 is installed at the upper end of the horn crutch body, and the curved rod 9 is connected to the connecting lug 12 by bolts. The height of the connecting lug 12 is higher than the protruding end of the oil cylinder 5;

[0028] A pawl 13 is installed at the lower end of the horn hook body, and the inner concave surface of the pawl 13 faces the shell 2;

[0029] A mounting shaft 14 is installed at the middle position of the body of the cleat turn. The mounting shaft 14 is located on the outer side of the body of the cleat turn. The wheel hub 4 is installed on the mounting shaft 14 and is locked by the end cover 6.

[0030] The various components of the housing 2 are welded and are suitable for forklifts with a smaller load-bearing capacity. The housing 2 includes a first housing 15 and a second housing 16. The first housing 15 and the second housing 16 are connected by a transverse plate 17. Mounting seats 18 are installed at both ends of one plate surface of the transverse plate 17. The two ends of the oil cylinder 5 are respectively clamped on the mounting seats 18.

[0031] Connecting plates 19 are installed on both upper and lower end surfaces of the first shell 15 and the second shell 16 . A connecting shaft 20 is installed in the middle of each connecting plate 19 , and the connecting shaft 20 is connected to the vehicle frame.

[0032] Among them, reinforcing plates are installed on the sides of both end portions of the first shell 15 and the second shell 16 to improve the strength of both ends of the first shell 15 and the second shell 16 and increase the service life of the first shell 15 and the second shell 16.

[0033] In addition, the vertical cross-sectional shape of the connecting shaft 20 is a cone-shaped, and the horizontal cross-sectional shape of the connecting shaft 20 is an ellipse. The connecting shaft 20 is a hollow structure, which can not only ensure the strength of the connecting shaft 20 but also reduce the use of materials, thereby achieving the effect of reducing costs.

[0034] An avoidance hole 7 is formed on the plate surface of the transverse plate 17 , and the oil inlet end and the oil outlet end of the oil cylinder 5 extend into the avoidance hole 7 and extend out.

[0035] The left and right ends of the first shell 15 and the second shell 16 are both arc-shaped parts, and the curvature of the arc-shaped part matches the curvature of the rotating wheel 11 in the claw crutch 3, with a certain gap between the arc-shaped part and the rotating wheel 11.

[0036] A limit post 21 is installed on the plate surface of the transverse plate 17. The limit post 21 is located below the connection between the crankshaft 9 and the oil cylinder 5 to further prevent the wheel hub 4 from turning excessively.

[0037] A plurality of lug blocks 22 are mounted on the outer circumference of the wheel hub 4 , and screw holes are provided on the lug blocks 22 to fasten the tire.

[0038] Working process:

[0039] When the left side of the oil cylinder 5 is in the retracted state, the forklift turns right with the right tire as the center.

[0040] When the right side of the oil cylinder 5 is in a retracted state, the forklift turns left with the left tire as the center.

[0041] Based on the above-mentioned ideal embodiment of the present invention, and in accordance with the above description, relevant personnel can make various changes and modifications without departing from the technical scope of the present invention. The technical scope of the present invention is not limited to the content of the specification, but must be determined according to the scope of the claims.

Claims

1. A hydraulic steering axle for a forklift, characterized by: The invention comprises a housing (2), an oil cylinder (5) and a yoke (3); the housing (2) has an installation area, the oil cylinder is horizontally installed in the installation area, a crank rod (9) is installed at both ends of the oil cylinder (5), and the yoke (3) is connected to the protruding end of the oil cylinder (5) through the crank rod (9); a wheel hub (4) is installed on the shaft of the yoke (3), and a tire is installed on the wheel hub.

2. The hydraulic steering axle for forklift according to claim 1, characterized in that: The said horn crutch (3) comprises a horn crutch body, and both left and right ends of the horn crutch body are provided with mounting rods, and both mounting rods are provided with rotating wheels (11); A connecting ear block (12) is installed at the upper end of the horn crutch body, and the curved rod (9) is connected to the connecting ear block (12) by bolts; A pawl (13) is installed at the lower end of the horn turn body, and the concave surface of the pawl (13) faces the housing (2); A mounting shaft (14) is installed at the middle position of the horn crank body. The mounting shaft (14) is located on the outer side of the horn crank body. The wheel hub (4) is installed on the mounting shaft (14) and is locked by the end cover (6).

3. The hydraulic steering axle for forklift according to claim 1, characterized in that: The housing (2) comprises a first housing (15) and a second housing (16), the first housing (15) and the second housing (16) being connected via a transverse plate (17), a mounting base (18) being installed at both ends of a plate surface of the transverse plate (17), and both ends of the oil cylinder (5) are respectively clamped on the mounting base (18); Connecting plates (19) are installed on the upper and lower end surfaces of the first shell (15) and the second shell (16). A connecting shaft (20) is installed at the middle position of each connecting plate (19), and the connecting shaft (20) is connected to the vehicle frame.

4. The hydraulic steering axle for forklift according to claim 3, characterized in that: A relief hole (7) is provided on the plate surface of the transverse plate (17), and the oil inlet end and the oil outlet end of the oil cylinder (5) extend into the relief hole (7) and extend out.

5. The hydraulic steering axle for forklift according to claim 3, characterized in that: The left and right end portions of the first shell (15) and the second shell (16) are both arc-shaped portions, and the curvature of the arc-shaped portions matches the curvature of the rotating wheel (11) in the yoke (3).

6. The hydraulic steering axle for forklift according to claim 3, characterized in that: A limiting column (21) is installed on the plate surface of the transverse plate (17), and the limiting column (21) is located below the connection between the curved rod (9) and the oil cylinder (5).

7. The hydraulic steering axle for forklift according to claim 1, characterized in that: A plurality of lug blocks (22) are installed on the outer circumference of the wheel hub (4), and screw holes are provided on the lug blocks (22).

8. The hydraulic steering axle for forklift according to claim 3, characterized in that: The cross-sectional shape of the connecting shaft (20) in the vertical direction is a frustum, the cross-sectional shape of the connecting shaft (20) in the transverse direction is an ellipse, and the connecting shaft (20) is a hollow structure.

9. The hydraulic steering axle for forklift according to claim 3, characterized in that: Reinforcement plates are installed on the sides of both end portions of the first shell (15) and the second shell (16).

Images