Trolley roller dismounting tool

Abstract

The utility model relates to a truck roller dismounting tool which structurally comprises a first sleeve, a second sleeve, a connecting arm, an adjusting sleeve and a punch. The first sleeve, the second sleeve and the adjusting sleeve are coaxially arranged, the first sleeve and the second sleeve are connected with each other through a connecting arm located on one side, the adjusting sleeve penetrates through the second sleeve, and the extending length of the adjusting sleeve can be adjusted by the adjusting sleeve in the second sleeve; the punch is connected in the adjusting sleeve in a penetrating mode, and the punch is connected with the adjusting sleeve in a sliding mode. An internal thread is arranged on the inner wall of the second sleeve, an external thread is arranged on the outer wall of the adjusting sleeve, and the second sleeve is connected with the adjusting sleeve through the threads. When the tool is used for dismounting the carrier roller, the punch does not need to be held by hands in the whole process, so that the safety in the dismounting process of the carrier roller is improved.

Description

Technical Field

[0001] This utility model relates to a tool for repairing a ground jack, specifically a tool for disassembling ground jack rollers. Background Technology

[0002] A pallet jack, also known as a hydraulic pallet truck, is a commonly used heavy-duty transport device. The chassis and rollers are equipped with a hydraulic system, which allows the jack to be easily pushed under the cargo box base. Then, the chassis is raised using hydraulic pressure to lift the goods, which can then be dragged along. Once at the destination, the chassis is lowered using hydraulic pressure, and the goods are also lowered to the ground, allowing the pallet jack to be easily removed.

[0003] The pallet jack rollers are mounted on the lifting frame via axles. While the rollers are generally made of wear-resistant materials, they will still experience wear after prolonged use and need to be replaced. To replace a pallet jack roller, the technician holds a punch in one hand, aligning the end of the punch with the end of the axle, and then uses a hammer in the other hand to strike the punch. The impact force from the punch dislocates the axle axially, thus removing the roller.

[0004] Currently, when maintenance personnel use a hand-held punch to disassemble the rollers of a pallet jack, the punch can easily deviate from the end of the axle, posing a certain degree of danger. Utility Model Content

[0005] The purpose of this utility model is to provide a tool for disassembling pallet jack rollers, so as to solve the problem that the existing method of disassembling pallet jack rollers with a hand-held punch is too dangerous.

[0006] This utility model is implemented as follows: a tool for disassembling a pallet jack roller includes a first sleeve, a second sleeve, a connecting arm, an adjusting sleeve, and a punch; the first sleeve, the second sleeve, and the adjusting sleeve are coaxially arranged, and the first sleeve and the second sleeve are connected to each other by a connecting arm located on one side; the adjusting sleeve passes through the second sleeve, and the extension length of the adjusting sleeve can be adjusted within the second sleeve; the punch passes through the adjusting sleeve, and the punch and the adjusting sleeve are slidably connected.

[0007] As a further improvement to the jackhammer removal tool of this utility model, an internal thread is provided on the inner wall of the second sleeve, and an external thread is provided on the outer wall of the adjusting sleeve. The second sleeve and the adjusting sleeve are connected by threads.

[0008] As a further improvement to the jackhammer removal tool of this utility model, a rotating operating part is provided at the outer end of the adjusting sleeve for rotating the adjusting sleeve.

[0009] As a further improvement to the jackhammer removal tool of this utility model, the connecting arm is arc-shaped, U-shaped, U-shaped, or V-shaped.

[0010] As a further improvement to the jackhammer removal tool of this utility model, the length of the adjusting sleeve is greater than the length of the second sleeve.

[0011] As a further improvement to the jackhammer removal tool of this utility model, the diameter of the inner wall of the first sleeve is larger than the diameter of the roller shaft, and the diameter of the punch is smaller than the diameter of the roller shaft.

[0012] As a further improvement to the jackhammer disassembly tool of this utility model, the punch has a cylindrical structure.

[0013] As a further improvement to the jackhammer removal tool of this utility model, the distance between the first sleeve and the second sleeve is greater than the length of the roller axle.

[0014] As a further improvement to the jackhammer removal tool of this utility model, a tapered guide portion is provided at the inner end of the adjusting sleeve.

[0015] This invention replaces the operator's hand in fixing a punch during the disassembly of a pallet jack roller. The invention is fixed to both ends of the pallet jack roller axle via an adjusting sleeve and a first sleeve, ensuring that the first sleeve, second sleeve, adjusting sleeve, and axle are coaxial. After the punch is inserted into the adjusting sleeve, it remains coaxial with the axle. The adjusting sleeve guides the punch, ensuring axial movement without radial deviation. External force is applied to the outer end of the punch, causing it to contact the end of the axle and gradually pushing the axle axially into the first sleeve. Once the axle is fully pushed out, the disassembly of the pallet jack roller is complete. The entire process requires no manual intervention, significantly improving safety during disassembly. Attached Figure Description

[0016] Figure 1 This is a perspective view of the present invention.

[0017] Figure 2 This is a cross-sectional view of the present invention.

[0018] Figure 3 This is a schematic diagram illustrating the use of this utility model.

[0019] In the figure: 1. First sleeve; 2. Second sleeve; 3. Connecting arm; 4. Adjusting sleeve; 5. Punch; 6. Roller; 7. Axle; 8. Lifting frame; 4-1. Rotating operating part; 4-2. Conical guide part. Detailed Implementation

[0020] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] like Figure 1 , Figure 2 as well as Figure 3 As shown, the disassembly tool for the pallet jack roller 6 of this utility model mainly includes a first sleeve 1, a second sleeve 2, a connecting arm 3, an adjusting sleeve 4, and a punch 5.

[0023] The first sleeve 1 and the second sleeve 2 are coaxially arranged, and both the first sleeve 1 and the second sleeve 2 have axially penetrating inner holes. A certain gap is left between the first sleeve 1 and the second sleeve 2 so that the roller 6 and the roller shaft of the pallet jack can be placed between the first sleeve 1 and the second sleeve 2. The first sleeve 1 and the second sleeve 2 are connected to each other as a whole structure by a connecting arm 3, which is located on one side of the first sleeve 1 and the second sleeve 2.

[0024] The adjusting sleeve 4 passes through the second sleeve 2, and the adjusting sleeve 4 and the second sleeve 2 are connected in an adjustable manner. The extension length of the adjusting sleeve 4 can be adjusted inside the second sleeve 2. The lifting frame 8 with rollers 6 and axles 7 is clamped by the first sleeve 1 and the adjusting sleeve 4. After clamping, it can prevent the present invention from falling off the lifting frame 8.

[0025] The punch 5 is inserted into the adjusting sleeve 4, and the punch 5 and the adjusting sleeve 4 are slidably connected. Striking the outer end of the punch 5 will cause the punch 5 to move inward along the axial direction.

[0026] To achieve an adjustable connection between the adjusting sleeve 4 and the second sleeve 2, an internal thread is provided on the inner wall of the second sleeve 2, and an external thread is provided on the outer wall of the adjusting sleeve 4. The second sleeve 2 and the adjusting sleeve 4 are connected by threads. Rotating the adjusting sleeve 4 will drive the adjusting sleeve 4 to move axially, thereby changing the extension length of the adjusting sleeve 4.

[0027] To facilitate the rotation of the adjusting sleeve 4, a rotation operation part 4-1 is provided at the outer end of the adjusting sleeve 4. The rotation operation part 4-1 can be a multi-prism structure such as a triangular prism, a square prism, or a hexagonal prism, and can be operated with a corresponding wrench to drive the rotation of the adjusting sleeve 4.

[0028] The distance between the first sleeve 1 and the second sleeve 2 is greater than the length of the roller 6 axle 7, so that this utility model can be placed at both ends of the roller 6 axle 7 to be disassembled.

[0029] The length of the adjusting sleeve 4 is greater than the length of the second sleeve 2, so that the adjusting sleeve 4 has a certain adjustment range, and the clamping and fixing of this utility model is achieved by the adjustment range.

[0030] The two ends of the axle 7 of the roller 6 slightly extend beyond the two end faces of the lifting frame 8. The diameter of the inner wall of the first sleeve 1 is larger than the diameter of the axle 7 of the roller 6. When in use, the first sleeve 1 is sleeved on one end of the axle 7, and the adjusting sleeve 4 is sleeved on or pressed against the other end of the axle 7. This can prevent the present invention from coming off or detaching from both ends of the axle 7, and ensure that the positions of the first sleeve 1, the second sleeve 2, and the adjusting sleeve 4 are relatively fixed with the lifting frame 8 during the disassembly of the axle 7. The adjusting sleeve 4 guides the punch 5, thus fixing the direction of movement of the punch 5.

[0031] The diameter of the inner wall of the first sleeve 1 is larger than the diameter of the roller 6 and the axle 7, while the diameter of the punch 5 is smaller than the diameter of the roller 6 and the axle 7. In this way, the punch 5 can push the axle 7 out through the lifting frame 8 and the roller 6. The pushed-out axle 7 enters the first sleeve 1 and can easily pass forward through the first sleeve 1. The punch 5 can also be taken out along the adjusting sleeve 4.

[0032] After the axle 7 is pushed out, the roller 6 is detached from the lifting frame 8, thus achieving the disassembly of the jack roller 6.

[0033] Since the diameter of the punch 5 is smaller than the diameter of the axle 7, while the inner diameter of the adjusting sleeve 4 is slightly larger than the diameter of the punch 5, the inner diameter of the adjusting sleeve 4 is generally smaller than the diameter of the axle 7. In use, the inner end of the adjusting sleeve 4 is pressed against the end of the axle 7. After the axle 7 is pushed out and the punch 5 is removed, the distance between the first sleeve 1 and the adjusting sleeve 4 is slightly larger than the width of the lifting frame 8, allowing the device to be easily removed.

[0034] The connecting arm 3 can be an arc-shaped, U-shaped, U-shaped, or V-shaped structure, and it only needs to be able to appropriately avoid the roller 6 to one side. The connecting arm 3 can be a solid or hollow tubular structure, or a plate-like structure, etc.

[0035] Punch 5 can be a cylindrical structure or a prism structure, etc.

[0036] A tapered guide 4-2 is provided at the inner end of the adjusting sleeve 4 to facilitate the adjusting sleeve 4 to be inserted and installed in the second sleeve 2.

[0037] A tapered guide structure can also be provided at the end of the punch 5 to facilitate the punch 5 to pass into the adjusting sleeve 4 and into the mounting hole of the wheel axle 7 on the lifting frame 8.

[0038] The method of using this utility model is as follows: Place the first sleeve 1 and the second sleeve 2 at both ends of the axle 7 of the pallet jack roller 6 to be disassembled. Fit the first sleeve 1 onto the end of the axle 7. Rotate the adjusting sleeve 4 so that the inner end of the adjusting sleeve 4 presses against the end of the axle 7. Insert the punch 5 into the adjusting sleeve 4. The operator holds a hammer and strikes the outer end of the punch 5. The punch 5 pushes the axle 7 out into the first sleeve 1. After the axle 7 is completely pushed out, remove the punch 5 outward. At this time, the roller 6 and this utility model can be removed from the pallet jack's lifting frame 8, completing the disassembly of the roller 6. Since no one needs to hold the punch 5 during the entire process, the safety of the pallet jack roller 6 disassembly process is improved. At the same time, after using this utility model, the existing working method of holding the punch with one hand and holding the hammer with the other hand is changed. The operator can hold the hammer with both hands, and the swing amplitude of the hammer is also greater than the existing operating method, which makes it easier for the operator to exert force and increase the hammering force. Rusty axles that previously required a cutting machine to disassemble can be easily removed.

[0039] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A tool for dismantling pallet jack rollers, characterized in that, It includes a first sleeve, a second sleeve, a connecting arm, an adjusting sleeve, and a punch; the first sleeve, the second sleeve, and the adjusting sleeve are coaxially arranged, and the first sleeve and the second sleeve are connected to each other by the connecting arm located on one side. The adjusting sleeve passes through the second sleeve, and the extension length of the adjusting sleeve can be adjusted within the second sleeve. The punch passes through the adjusting sleeve, and the punch and the adjusting sleeve are slidably connected.

2. The pallet jack roller disassembly tool according to claim 1, characterized in that, The second sleeve has an internal thread on its inner wall and an external thread on its outer wall. The second sleeve and the adjusting sleeve are connected by threads.

3. The pallet jack roller disassembly tool according to claim 2, characterized in that, A rotating operating part is provided at the outer end of the adjusting sleeve for rotating the adjusting sleeve.

4. The pallet jack roller disassembly tool according to claim 1, characterized in that, The connecting arm is arc-shaped, U-shaped, U-shaped, or V-shaped.

5. The pallet jack roller disassembly tool according to claim 1, characterized in that, The length of the adjusting sleeve is greater than the length of the second sleeve.

6. The pallet jack roller disassembly tool according to claim 1, characterized in that, The diameter of the inner wall of the first sleeve is larger than the diameter of the roller shaft, and the diameter of the punch is smaller than the diameter of the roller shaft.

7. The pallet jack roller disassembly tool according to claim 1, characterized in that, The punch has a cylindrical structure.

8. The pallet jack roller disassembly tool according to claim 1, characterized in that, The distance between the first sleeve and the second sleeve is greater than the length of the roller axle.

9. The pallet jack roller disassembly tool according to claim 1, characterized in that, A tapered guide portion is provided at the inner end of the adjusting sleeve.

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