Ramp hammer type U-shaped pin remover
The hammer-type U-pin remover utilizes the hammer principle and optimized structure to solve the problem of time-consuming and labor-intensive U-pin removal, achieves efficient removal, and reduces maintenance costs and tool damage risks.
Patent Information
- Application Number
- CN202422849196.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-21
- Publication Date
- 2025-09-30
- Estimated Expiration
- 2034-11-21
AI Technical Summary
In the prior art, when repairing hydraulic supports in coal mines, U-shaped pins are corroded, which makes removal time-consuming and labor-intensive, and is prone to damaging tools and hydraulic pipelines, thereby increasing repair costs.
A hammer-type U-shaped pin remover is designed. The hammer principle is used to insert the bent hook between the U-shaped pin and the hydraulic support, and the U-shaped pin is gradually pulled out through the sliding impact of the hammer. Combined with structural optimization such as wear-resistant layer and elastic hook, the operation is simplified and the hydraulic support is protected.
It greatly reduces the work intensity, improves the demolition efficiency, reduces the maintenance cost, and the tool has a simple structure, low cost, and can be reused for a long time.
Smart Images
Figure CN223395183U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of production auxiliary tooling, in particular to a hammer-type U-shaped pin remover. Background Art
[0002] In underground coal mines, U-shaped pins are often used to connect hydraulic pipes in hydraulic supports. When repairing a hydraulic support, the U-shaped pins need to be removed. The current method for removing these pins is to pry them upwards using pliers, screwdrivers, or awls, gradually moving them upwards before pulling them out. However, due to corrosion over time, the U-shaped pins become time-consuming and laborious to remove, resulting in low work efficiency. Furthermore, the removal process can easily damage the pliers, screwdrivers, and hydraulic pipes, increasing maintenance costs. Utility Model Content
[0003] The utility model aims to provide a hammer-type U-shaped pin remover, which can conveniently remove the U-shaped pin, reduce the difficulty of removing the U-shaped pin, improve work efficiency, and thus reduce maintenance costs.
[0004] In order to achieve the above-mentioned purpose, the utility model provides a hammer-type U-shaped pin remover, comprising a pull rod and a hammer installed on the pull rod for sliding up and down; the pull rod is provided with a sliding stroke for the hammer to slide up and down, and blocks are respectively provided at the upper and lower ends of the sliding stroke; the hammer gap is installed on the pull rod and is located between the two blocks; the bottom of the pull rod is provided with a hook bent to one side thereof, and the hook can be inserted between the U-shaped pin and the hydraulic support under the action of external force, and hooked on the top of the U-shaped pin.
[0005] After adopting the above structure, the end of the hook away from the pull rod is inserted between the U-shaped pin and the hydraulic support. If necessary, the intersection of the pull rod and the hook can be struck with a hammer to insert the hook between the U-shaped pin and the hydraulic support. Then, holding the pull rod with one hand and holding the hammer with the other, the hammer is driven to slide up and down on the pull rod. The hammer continuously strikes the block at the top of the sliding stroke, gradually removing the U-shaped pin. The hammer principle is cleverly used to remove the U-shaped pin, greatly reducing the workload and improving work efficiency. In addition, the tool has a simple structure, low manufacturing cost, easy use, and can be reused for a long time.
[0006] Preferably, a handle is fixedly installed on the top of the pull rod. Through the design of the handle, it is convenient to grasp the pull rod.
[0007] Preferably, the outer surface of the hammer is coated with a wear-resistant layer. Through this design, the feel of people gripping the hammer can be improved, and the hammer can be prevented from being too cold, resulting in poor touch.
[0008] Preferably, an end away from the pull rod on the hook is provided with a pointed tip. Through this design, the hook can be easily inserted between the U-shaped pin and the hydraulic support, which can meet a smaller assembly gap.
[0009] Preferably, the angle between the hook and the pull rod is 60° to 80°. This design prevents the hook from deforming and affecting the pulling.
[0010] Preferably, a knocking rod is further provided at the bottom of the pull rod, comprising a fixing rod fixed to the pull rod and a striking rod bent toward one side thereof; the striking rod and the hook are symmetrically arranged on both sides of the pull rod. This design prevents the hammer from hitting the hydraulic support and causing damage to the hydraulic support.
[0011] Preferably, an elastic retaining hook is provided above the curved hook, and a hooking area is formed between the elastic retaining hook and the curved hook; under the action of an external force, the elastic retaining hook is compressed, the hooking area is opened, and the U-shaped pin enters / exits the hooking area. This design can prevent the U-shaped pin from being thrown away after being pulled out.
[0012] Preferably, the elastic hook is fixed on the pull rod at one end, and the other end is bent downward and abuts against the hook. Through this design, the structure of the elastic hook can be simplified and the production cost can be reduced.
[0013] Preferably, one end of the elastic retaining hook and the hook abutment tilts toward the pulling rod direction. Through this design, the elastic retaining hook can be easily deformed so that the U-shaped pin can smoothly enter the hooking area.
[0014] Preferably, the top of the lever is provided with a handle mounting hook that is bent toward one side, and a handle is fixed to the handle mounting hook. The handle extends perpendicularly to the extension direction of the lever and forms a 90° angle with the extension direction of the hook. This design satisfies human physiomechanics and makes it easier for the hand to exert force.
[0015] After adopting the above technical solution, the beneficial effects of the utility model are:
[0016] The utility model discloses a hammer-type U-shaped pin remover to solve the technical problems in the prior art of pulling out the U-shaped pin of the hydraulic support, which is time-consuming and labor-intensive, low-efficiency, and easily causes damage to the hydraulic support, resulting in high maintenance costs. The utility model discloses a hammer-type U-shaped pin remover to cleverly realize the removal of the U-shaped pin by using the hammer principle, which greatly reduces the work intensity and improves the work efficiency. In addition, the tool has a simple structure, low manufacturing cost, is easy to use, and can be reused for a long time. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a schematic structural diagram of a striker-type U-shaped pin remover in Example 1;
[0018] Figure 2 It is a structural schematic diagram of a hammer-type U-shaped pin remover in the second and third embodiments;
[0019] Figure 3 2 is a schematic diagram of disassembly and assembly of this embodiment.
[0020] In the figure, 1. pull rod, 11. stop block, 12. hook, 121. pointed head, 13. knock rod, 131. fixing rod, 132. impact rod, 14. elastic stop hook, 2. hammer, 3. handle, 4. U-shaped pin, 5. hydraulic support. DETAILED DESCRIPTION
[0021] The present invention will be further described below with reference to the accompanying drawings.
[0022] The orientations mentioned in this specification are based on the orientations of the hammer-type U-shaped pin remover of the present invention during normal operation, and do not limit the orientations during storage and transportation. They only represent relative positional relationships, not absolute positional relationships.
[0023] Example 1:
[0024] like Figure 1 As shown, a hammer-type U-shaped pin remover includes a pull rod 1 and a hammer 2 mounted on the pull rod 1 for sliding up and down; the pull rod 1 is provided with a sliding stroke for the hammer 2 to slide up and down, and blocks 11 are respectively provided at the upper and lower ends of the sliding stroke; the hammer 2 is gap-mounted on the pull rod 1 and is located between the two blocks 11; the outer surface of the hammer 2 is covered with a wear-resistant layer.
[0025] The bottom of the pull rod 1 is equipped with a hook 12 that bends to one side. Under the action of an external force, the hook 12 can be inserted between the U-shaped pin 4 and the hydraulic support 5 and hooked onto the top of the U-shaped pin 4. The pull rod 1 and the hook 12 are integrally formed and made of high-strength steel. The end of the hook 12 facing away from the pull rod 1 is provided with a pointed tip 121. The pointed tip 121 can accommodate smaller gaps, making it easier to insert the hook 12 between the U-shaped pin 4 and the hydraulic support 5. The angle a between the hook 12 and the pull rod 1 is 60° to 80°.
[0026] During installation, insert the end of the hook 12 away from the pull rod 1 between the U-shaped pin 4 and the hydraulic support 5; if necessary, use your hand or a hammer to hammer the intersection of the pull rod 1 and the hook 12 to insert the hook 12 between the U-shaped pin 4 and the hydraulic support 5; then hold the pull rod 1 with one hand and hold the hammer 2 with the other hand, and drive the hammer 2 to slide up and down on the pull rod 1. The hammer 2 continuously hits the block 11 at the top of the sliding stroke, and uses the impact force of the hammer to gradually pull out the U-shaped pin 4.
[0027] When manually pulling out the pull rod 1, the hammer 2 hits the block 11, causing the U-shaped pin 4 to be subjected to vertical tension, and the vibration of the pull rod 1 causes the U-shaped pin 4 to loosen from the pin hole, thereby reducing the difficulty of pulling out the U-shaped pin 4 and improving the pulling efficiency.
[0028] Furthermore, a handle 3 is fixedly mounted on the top of the pull rod 1. The provision of handle 3 facilitates gripping of the pull rod 1. Because the pull rod 1 still requires an upward pulling force, to facilitate the application of force, in this embodiment, a handle mounting hook is provided on the top of the pull rod 1, which is bent to one side. The handle 3 is fixed to the handle mounting hook. The handle 3 extends perpendicular to the extension direction of the pull rod 1 and forms a 90° angle with the extension direction of the hook 12.
[0029] Example 2:
[0030] like Figure 2 and Figure 3 As shown together, in order to more conveniently insert the hook 12 between the U-shaped pin 4 and the hydraulic support 5, this embodiment is further improved on the basis of the first embodiment.
[0031] Because when necessary, it is necessary to use a hammer to assist in knocking the intersection of the pull rod 1 and the hook 12, so that the hook 12 is inserted between the U-shaped pin 4 and the hydraulic support 5; in order to avoid the knocking being skewed and causing damage to the hook 12 or the hydraulic support 5, a knocking rod 13 is also provided at the bottom of the pull rod 1 in this embodiment. The knocking rod 13 includes a fixed rod 131 fixed to the pull rod 1 and a striking rod 132 bent to one side thereof; the striking rod 132 is symmetrically arranged on both sides of the pull rod 1. When the hook 12 is inserted between the U-shaped pin 4 and the hydraulic support 5, the hook 12 will tilt up and the striking rod 132 will tilt diagonally upward, which can provide more operating space for the hammer, thereby avoiding collision with the hydraulic support 5.
[0032] Example 3:
[0033] In actual application, when the U-shaped pin 4 is pulled out, it will be thrown away due to inertial force, and the flying U-shaped pin 4 will accidentally injure a worker passing by or the U-shaped pin 4 will be lost and cannot be used again. In order to solve this problem, the present embodiment is further improved.
[0034] like Figure 2 and Figure 3 As shown, an elastic retaining hook 14 is provided above the hook 12, and a hooking area is formed between the elastic retaining hook 14 and the hook 12. Under the action of an external force, the elastic retaining hook 14 is compressed, the hooking area is opened, and the U-shaped pin 4 enters / exits the hooking area. The elastic retaining hook 14 can be a spring or a retaining plate with a spring. To simplify the structure, in this embodiment, the elastic retaining hook 14 is a thin rod structure with one end fixed to the pull rod 1 and the other end bent downward to abut the hook 12.
[0035] When the hook 12 is inserted between the U-shaped pin 4 and the hydraulic support 5, the U-shaped pin 4 will push the free end of the elastic hook 14 to deform, causing the free end that abuts against the hook 12 to deform, and the U-shaped pin 4 enters the hooking area. When the U-shaped pin 4 is pulled out, it will be blocked by the hooking area and will continue to hook on the hook 12.
[0036] In order to facilitate the compression deformation of the elastic hook 14 , the end of the elastic hook 14 that abuts against the hook 12 is tilted toward the pull rod 1 .
[0037] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the present invention should also fall within the scope of protection of the present invention.
Claims
1. A striker-type U-shaped pin remover, comprising a pull rod and a striker mounted on the pull rod for vertical sliding movement; the pull rod is provided with a sliding stroke for the striker to slide up and down, and stops are provided at the upper and lower ends of the sliding stroke; the striker gap is mounted on the pull rod and is located between the two stops; and the following characteristics are characterized: The bottom of the pull rod is provided with a hook bent toward one side thereof. The hook can be inserted between the U-shaped pin and the hydraulic support under the action of external force and hooked on the top of the U-shaped pin.
2. The striker type U-shaped pin remover according to claim 1, characterized in that: A handle is fixedly installed on the top of the pull rod.
3. The striker type U-shaped pin remover according to claim 1, characterized in that: The outer surface of the hammer is covered with a wear-resistant layer.
4. The striker type U-shaped pin remover according to claim 1, characterized in that: The end of the hook away from the pulling rod is provided with a pointed head.
5. The striker type U-shaped pin remover according to claim 1, characterized in that: The included angle between the hook and the pull rod is 60° to 80°.
6. The striker type U-shaped pin remover according to claim 1, characterized in that: A knocking rod is further provided at the bottom of the pulling rod, and the knocking rod comprises a fixing rod fixed on the pulling rod and a striking rod bent to one side thereof; the striking rod and the bent hook are symmetrically arranged on both sides of the pulling rod.
7. The striker type U-shaped pin remover according to claim 1, characterized in that: An elastic retaining hook is provided above the curved hook, and a hooking area is formed between the elastic retaining hook and the curved hook; under the action of external force, the elastic retaining hook is compressed, the hooking area is opened, and the U-shaped pin enters / exits the hooking area.
8. The striker type U-shaped pin remover according to claim 7, characterized in that: The elastic blocking hook is a thin rod structure with one end fixed on the pull rod and the other end bent downward and abutting against the bent hook.
9. The striker type U-shaped pin remover according to claim 8, characterized in that: One end of the elastic blocking hook abutting against the bent hook is inclined toward the pulling rod direction.
10. The striker type U-shaped pin remover according to claim 2, characterized in that: The top of the pull rod is provided with a handle mounting hook bent to one side thereof, the handle is fixed on the handle mounting hook, the extension direction of the handle is perpendicular to the extension direction of the pull rod, and forms a 90° angle with the extension direction of the hook.