Hydraulic automatic telescopic forklift steering column mechanism

Abstract

The utility model relates to the technical field of fork truck, and disclose hydraulic automatic telescopic fork truck steering column mechanism, including inside telescopic mechanism, the surface of inside telescopic mechanism is provided with intermediate transition cover shell, the surface of intermediate transition cover shell is provided with outside protective cover, the top of inside telescopic mechanism is fixed with steering wheel, inside telescopic mechanism includes telescopic sleeve rod, telescopic sleeve rod includes lower pole body and upper pole body, the inside telescopic mechanism of lower pole body is equipped with hydraulic cylinder, the piston rod top of hydraulic cylinder is fixed with the bottom of upper pole body. The utility model makes the driving more comfortable and convenient, adapts to different figure and driving habit, has improved the flexibility and comfort of fork truck operation.

Description

Technical Field

[0001] This utility model relates to the field of forklift technology, and in particular to a hydraulic automatic telescopic forklift steering column mechanism. Background Technology

[0002] With the increasingly widespread application of forklifts in the engineering field, they have become an indispensable part of freeing up manual labor. Forklift users have placed higher demands on the overall machine's operational comfort, ease of use, and other human-machine interface performance. As a crucial component of the forklift's overall structure, the steering column mechanism is a key factor influencing user comfort when operating the forklift. More and more customers consider the needs of overall machine operational comfort and ease of use when purchasing forklifts, often requiring the steering column mechanism to be adjustable according to the driver's needs, making driving more comfortable and convenient, and adaptable to different body types and driving habits. However, forklift steering columns with only a single height and no adjustment offer limited functionality and do not meet the needs of these customers. Therefore, a hydraulic automatic telescopic forklift steering column mechanism is proposed. Utility Model Content

[0003] This utility model aims to at least partially solve one of the technical problems in related technologies. Therefore, one objective of this utility model is to propose a hydraulic automatic telescopic forklift steering column mechanism, making driving more comfortable and convenient, adaptable to different body types and driving habits, and improving the flexibility and comfort of forklift operation.

[0004] The hydraulic automatic telescopic forklift steering column mechanism proposed in this utility model includes an internal telescopic mechanism, an intermediate transition cover is provided on the surface of the internal telescopic mechanism, an external protective cover is provided on the surface of the intermediate transition cover, and a steering wheel is fixed on the top of the internal telescopic mechanism.

[0005] The internal telescopic mechanism includes a telescopic sleeve rod, which includes a lower rod body and an upper rod body. A hydraulic cylinder is installed inside the lower rod body, and the top of the piston rod of the hydraulic cylinder is fixed to the bottom of the upper rod body.

[0006] The intermediate transition cover includes two parts: an upper cover and a lower cover. The lower rod is fixed inside the lower cover, and the upper cover is rotatably fitted onto the surface of the upper rod.

[0007] The external protective cover consists of two parts: an upper protective cover and a lower protective cover. The upper protective cover is fixedly fitted onto the outside of the upper housing, and the lower protective cover is fixedly fitted onto the outside of the lower housing.

[0008] Preferably, the limiting and locking mechanism includes a limiting disc welded and fixed to the top of the lower rod and a locking member surrounding the piston rod surface of the hydraulic cylinder.

[0009] Preferably, the limiting plate consists of a left end cover and a right end cover, which are welded together.

[0010] Preferably, the locking component includes a clamp, with a stud fitted between the two ends of the clamp, an eccentric handle movably mounted on one end of the stud, and a nut threaded onto the other end of the stud.

[0011] Preferably, a sealing plate is fixed to the top of the lower protective cover.

[0012] Preferably, a ball bearing is fitted between the upper cover and the upper rod.

[0013] The beneficial effects of this utility model are as follows: This application uses a set of telescopic sleeves and hydraulic cylinders in conjunction with a simple hydraulic circuit to achieve automatic telescopic and locking functions, as well as a set of limiting and locking mechanisms to ensure that the telescopic sleeves do not fall off and to further ensure the realization of the manual locking function. An external protective cover is installed through an intermediate transition cover to provide protection for the mechanism. This utility model has a simple structure, uses a hydraulic cylinder to drive the telescopic sleeves, has good operability, low maintenance costs, and a convenient and simple operating principle. While ensuring aesthetics, it also has high reliability. It can achieve the telescopic and locking of the steering column mechanism by using a simple hydraulic circuit, which can be adjusted according to the driver's needs, making driving more comfortable and convenient, adapting to different body types and driving habits, improving the flexibility and comfort of forklift operation, and further enhancing market competitiveness. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the hydraulic automatic telescopic forklift steering column mechanism proposed in this utility model.

[0015] Figure 2 This is a schematic diagram of the steering wheel lifting mechanism of the hydraulic automatic telescopic forklift steering column proposed in this utility model.

[0016] Figure 3 This is a schematic diagram showing the steering wheel lifting limit of the hydraulic automatic telescopic forklift steering column mechanism proposed in this utility model.

[0017] Figure 4 This is a schematic diagram of the intermediate transition cover assembly of the hydraulic automatic telescopic forklift steering column mechanism proposed in this utility model.

[0018] Figure 5 This is a schematic diagram of the telescopic sleeve assembly structure of the steering column mechanism of the hydraulic automatic telescopic forklift proposed in this utility model.

[0019] Figure 6 This is a schematic diagram of the limiting and locking mechanism of the steering column mechanism of the hydraulic automatic telescopic forklift proposed in this utility model.

[0020] Figure 7 This is a schematic diagram of the locking component structure of the hydraulic automatic telescopic forklift steering column mechanism proposed in this utility model.

[0021] Figure 8 This is a schematic diagram of the limit plate structure of the steering column mechanism of the hydraulic automatic telescopic forklift proposed in this utility model.

[0022] In the diagram: 1. Internal telescopic mechanism; 11. Telescopic sleeve; 111. Lower rod body; 112. Upper rod body; 12. Limit locking mechanism; 121. Locking component; 1211. Eccentric column handle; 1212. Stud; 1213. Nut; 1214. Clamp; 122. Limiting plate; 1221. Left end cover; 1222. Right end cover; 13. Hydraulic cylinder; 2. Intermediate transition cover; 21. Upper cover; 22. Lower cover; 3. External protective cover; 31. Upper protective cover; 32. Lower protective cover; 33. Sealing plate; 4. Steering wheel. Detailed Implementation

[0023] Reference Figure 1-8 The hydraulic automatic telescopic forklift steering column mechanism includes an internal telescopic mechanism 1, an intermediate transition cover 2 on the surface of the internal telescopic mechanism 1, an external protective cover 3 on the surface of the intermediate transition cover 2, and a steering wheel 4 fixed on the top of the internal telescopic mechanism 1.

[0024] The internal telescopic mechanism 1 includes a telescopic sleeve 11, which includes a lower rod body 111 and an upper rod body 112. A hydraulic cylinder 13 is installed inside the lower rod body 111, and the top of the piston rod of the hydraulic cylinder 13 is fixed to the bottom of the upper rod body 112.

[0025] The intermediate transition cover 2 includes two parts: an upper cover 21 and a lower cover 22. The lower rod 111 is fixed inside the lower cover 22, and the upper cover 21 is rotatably fitted onto the surface of the upper rod 112.

[0026] The outer protective cover 3 includes two parts: an upper protective cover 31 and a lower protective cover 32. The upper protective cover 31 is fixedly fitted on the outside of the upper cover 21, and the lower protective cover 32 is fixedly fitted on the outside of the lower cover 22.

[0027] The limiting locking mechanism 12 includes a limiting plate 122 welded and fixed to the top of the lower rod 111 and a locking member 121 that surrounds the piston rod surface of the hydraulic cylinder 13. The locking member 121 is fixed to the piston rod surface of the hydraulic cylinder 13. When the hydraulic cylinder 13 fails, the piston rod may fall. The limiting plate 122 blocks the locking member 121, thus limiting the fall. The limiting locking mechanism 12 can act as a protective lock to prevent the steering wheel 4 from falling suddenly and affecting driving safety.

[0028] The limiting plate 122 is composed of a left end cover 1221 and a right end cover 1222. The left end cover 1221 and the right end cover 1222 are welded and fixed together. The structures of the two parts, the left end cover 1221 and the right end cover 1222, are combined to form a circular limiting plate 122, which is convenient for assembly.

[0029] The locking component 121 includes a clamp 1214, with a stud 1212 fitted between the two ends of the clamp 1214. An eccentric handle 1211 is movably mounted on one end of the stud 1212, and a nut 1213 is threaded onto the other end of the stud 1212.

[0030] A sealing plate 33 is fixed to the top of the lower protective cover 32.

[0031] A ball bearing is fitted between the upper cover 21 and the upper rod. By installing the ball bearing, the telescopic rod 11 can rotate independently of the upper cover 21 and the upper protective cover 31, thereby realizing the function of turning the steering wheel 4.

[0032] When using this device, if the forklift driver feels the steering wheel 4 is not in the correct position, they release the eccentric column handle 1211 of the locking member 121 and activate the hydraulic cylinder 13. This causes the piston rod of the hydraulic cylinder 13 to move, simultaneously moving the upper rod 112 of the telescopic sleeve 11 rigidly connected to it, causing the steering wheel 4 on the upper rod 112 to rise or fall. When the operator feels the position is correct, the hydraulic cylinder 13 enters the locking state and presses the eccentric column handle 1211 as a protective lock.

Claims

1. A hydraulic automatic telescopic forklift steering column mechanism, characterized in that: It includes an internal telescopic mechanism, the surface of which is provided with an intermediate transition cover, the surface of which is provided with an external protective cover, and a steering wheel is fixed to the top of the internal telescopic mechanism. The internal telescopic mechanism includes a telescopic sleeve rod, which includes a lower rod body and an upper rod body. A hydraulic cylinder is installed inside the lower rod body, and the top of the piston rod of the hydraulic cylinder is fixed to the bottom of the upper rod body. The intermediate transition cover includes two parts: an upper cover and a lower cover. The lower rod is fixed inside the lower cover, and the upper cover is rotatably fitted onto the surface of the upper rod. The external protective cover consists of two parts: an upper protective cover and a lower protective cover. The upper protective cover is fixedly fitted onto the outside of the upper housing, and the lower protective cover is fixedly fitted onto the outside of the lower housing.

2. The hydraulic automatic telescopic forklift steering column mechanism according to claim 1, characterized in that: The limiting and locking mechanism includes a limiting disc welded and fixed to the top of the lower rod and a locking element that surrounds the piston rod surface of the hydraulic cylinder.

3. The hydraulic automatic telescopic forklift steering column mechanism according to claim 2, characterized in that: The limiting plate consists of a left end cover and a right end cover, which are welded together.

4. The hydraulic automatic telescopic forklift steering column mechanism according to claim 2, characterized in that: The locking component includes a clamp, with a stud fitted between the two ends of the clamp. An eccentric handle is movably mounted on one end of the stud, and a nut is threaded onto the other end of the stud.

5. The hydraulic automatic telescopic forklift steering column mechanism according to claim 1, characterized in that: A sealing plate is fixed to the top of the lower protective cover.

6. The hydraulic automatic telescopic forklift steering column mechanism according to claim 1, characterized in that: A ball bearing is fitted between the upper cover and the upper rod.

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