A spring pin disassembly device

Abstract

The present invention provides a spring pin disassembly device. The disassembly device includes a housing with an open lower end, and a clamping sleeve, a grasping structure and a connecting frame are arranged inside the housing; a through hole is arranged on the clamping sleeve, and the through hole includes an upper section hole and a lower section hole; the grasping structure is arranged in the lower section hole and includes two hook claws, openings are arranged at the upper ends of the hook claws, and a connecting rod passes through the openings of the two hook claws; two ends of the connecting rod are respectively connected to two installation ends at the bottom end of the connecting frame; one end of a brake wire is connected to the upper end of the connecting frame, and the other end passes through an opening at the top end of the housing and is connected to a brake handle; a first spring and a second spring are sleeved on the brake wire, the lower end of the first spring is connected to the connecting frame, and the lower end of the second spring is connected to the clamping sleeve. The present invention realizes remote control of pin pulling operation through the brake wire, avoids the adverse effects caused by the narrow and complex space structure, is simple and convenient to operate, has a fast pin pulling speed and a high success rate, can be operated by a single person, and has low dependence on the experience and technology of the operator.

Description

Technical Field

[0001] The present invention belongs to the technical field of spring pin extraction tools, and particularly relates to a spring pin disassembly device. Background Art

[0002] When extracting a spring pin located in a narrow space, the operator often cannot perform visual operation, which is very inconvenient. Currently, tools such as crowbars and pliers are generally used for pin extraction operations, but the operations are difficult, the success rate is low, the time consumption is long, the efficiency is low, and it is easy for the operator to be bruised. Also, it has relatively high requirements for the operator's experience and skills. Summary of the Invention

[0003] To solve the above technical problems, the present invention provides a spring pin disassembly device, which includes a housing with an open bottom end. A clamping sleeve, a grasping structure, and a connecting frame are arranged inside the housing;

[0004] The clamping sleeve is provided with a through hole, which includes an upper section hole and a lower section hole. The hole diameter of the lower section hole gradually decreases from bottom to top, and the hole diameter of the upper section hole is larger than the hole diameter at the top of the lower section hole;

[0005] The grasping structure includes two hook claws. An opening is provided at the upper end of the hook claw, and a connecting rod sequentially passes through the openings of the two hook claws; a protrusion is provided on the outer side of the upper end of the hook claw;

[0006] The bottom end of the connecting frame is provided with two oppositely arranged mounting ends, and the two ends of the connecting rod are respectively connected to the inner sides of the two mounting ends; the upper end of the connecting frame is connected to one end of a brake wire, and the other end of the brake wire passes through an opening at the top of the housing and is connected to a brake handle;

[0007] A first spring is sleeved on the brake wire, and the lower end of the first spring is connected to the connecting frame;

[0008] A second spring is sleeved on the brake wire and the connecting frame, and the lower end of the second spring is connected to the top end of the clamping sleeve.

[0009] Furthermore, an adjusting base is provided at the bottom of the housing and is threadedly connected to the housing.

[0010] Furthermore, a brake wire sleeve is sleeved on the brake wire. One end of the brake wire sleeve is connected to the brake handle, and the other end of the brake wire sleeve is provided with a brake handle fine-tuning structure, which is threadedly connected to the top of the housing.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0012] The present invention realizes remote control of pin pulling operation through a brake wire, avoiding the adverse effects caused by narrow and complex spatial structures. The operation is simple and convenient, the pin pulling speed is fast, the success rate is high, it can be operated by a single person, and the dependence on the experience and technology of the operator is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of the spring pin disassembly device of the present invention;

[0014] Figure 2 is a schematic structural diagram of the brake handle according to Embodiment 1 of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the protection scope of the present invention.

[0016] Embodiment 1

[0017] A spring pin disassembly device, as Figure 1 shown, includes a housing 1 with an open bottom end. A clamping sleeve 2, a grasping structure, and a connecting frame 3 are arranged inside the housing 1;

[0018] A through hole penetrating up and down is provided on the clamping sleeve 2. The through hole can be divided into an upper section hole and a lower section hole. The hole diameter of the lower section hole gradually decreases from bottom to top, presenting a trumpet shape with the opening facing down. The upper section hole is a cylindrical hole, and its hole diameter is larger than the hole diameter at the top end of the lower section hole. A circular truncated cone is formed at the connection between the upper section hole and the lower section hole;

[0019] The grasping structure includes two oppositely arranged hook claws 4. Openings are provided at the upper ends of the opposite sides of the two hook claws 4, and a connecting rod 5 sequentially passes through the openings of the two hook claws 4; protrusions 6 are provided on the outer sides of the upper ends of the two hook claws 4;

[0020] The bottom end of the connecting frame 3 is provided with two oppositely arranged mounting ends. The connecting rod 5 is arranged between the two mounting ends, and both ends of the connecting rod 5 are connected to the inner sides of the two mounting ends;

[0021] One end of a brake wire 7 is connected to the upper end of the connecting frame, and the other end of the brake wire 7 passes through the opening at the top end of the housing 1 and is connected to a brake handle;

[0022] A first spring 8 is sleeved on the brake wire 7. The lower end of the first spring 8 is connected to the top end of the connecting frame 3, and the upper end of the first spring 8 is connected to the inner wall top end of the housing 1;

[0023] A second spring 9 is sleeved on the brake wire 7 and the connecting frame 3. The lower end of the second spring 9 is connected to the top end of the clamping sleeve 2, and the upper end of the second spring 9 is connected to the inner wall of the housing 1.

[0024] When the spring pin 13 is pulled out by using the spring pin disassembly device provided in this embodiment, the housing 1 is sleeved on the spring pin 13 to be pulled out, and the spring pin 13 is located between the two hook claws 4; then the operator pinches the brake lever, driving the brake wire 7 to move upward from the opening at the top end of the housing 1. When the brake wire 7 moves upward, it drives the grasping structure to move upward through the connecting frame; at this time, the clamping sleeve 2 does not move relative to the inner wall of the housing 1 under the action of the second spring 9, and the grasping structure slides upward in the lower hole of the clamping sleeve 2. Since the lower hole is a flared structure with a larger bottom and a smaller top, when the grasping structure slides upward, the distance between the two hook claws 4 becomes smaller and smaller under the action of the inner wall of the lower hole, realizing the closing of the grasping structure and firmly clamping the spring pin 13 between the two hook claws 4; after the grasping structure clamps the spring pin 13, the grasping structure can no longer move upward in the lower hole of the clamping sleeve 2, and the clamping sleeve 2 will move upward together with the grasping structure, so as to pull out the spring pin 13.

[0025] When the spring pin 13 needs to be reset, after aligning the spring pin 13, the operator releases the brake lever, the brake wire 7 is released, and the compressed first spring 8 exerts a downward force on the connecting frame 3. The connecting frame 3 drives the grasping structure to move downward; the protrusion 6 on the outer side of the upper end of the hook claw 4 contacts the annular round platform at the connection of the upper hole and the lower hole, opening the hook claw 4 and releasing the spring pin 13.

[0026] In this embodiment, the principle and structure of the brake lever can refer to the structure of a bicycle brake lever. As Figure 2 shown, the operator holds the handle 16 and pinches the handle 14. The handle 14 drives the cylindrical chuck 15 connected to the brake wire 7, and the cylindrical chuck 15 pulls the brake wire 7 to move.

[0027] Embodiment 2

[0028] A spring pin disassembly device, which is different from Embodiment 1 in that:

[0029] An adjustment base 10 is provided at the bottom of the housing 1. The adjustment base 10 is a hollow structure with openings at both the upper and lower ends. The inner wall of the housing 1 is threadedly connected to the outer wall of the adjustment base 10; the adjustment base 10 is used to adjust the height of the entire housing to adapt to spring pins of different heights;

[0030] A brake cable sheath 11 is provided outside the brake cable 7. One end of the brake cable sheath 11 is connected to the brake lever, and a brake lever fine-tuning structure 12 is provided at the other end of the brake cable sheath 11. A wire hole for passing the brake cable 7 is provided on the brake lever fine-tuning structure 12, and the outer wall of the brake lever fine-tuning structure 12 is threadedly connected to the inner wall of the top opening of the outer shell 1; the brake lever fine-tuning structure 12 is used to adjust the length of the pin-pulling action.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A spring pin disassembly device, characterized in that, the disassembly device comprises a housing (1) with an open bottom end, and a clamping sleeve (2), a grasping structure and a connecting frame (3) are arranged inside the housing (1); a through hole is arranged on the clamping sleeve (2), the through hole comprises an upper section hole and a lower section hole, the hole diameter of the lower section hole gradually decreases from bottom to top, and the hole diameter of the upper section hole is larger than the hole diameter of the top end of the lower section hole; the grasping structure comprises two hook claws (4), openings are arranged at the upper ends of the hook claws (4), and a connecting rod (5) sequentially passes through the openings of the two hook claws (4); protrusions (6) are arranged on the outer sides of the upper ends of the hook claws (4); the bottom end of the connecting frame (3) is provided with two oppositely arranged mounting ends, and two ends of the connecting rod (5) are respectively connected to the inner sides of the two mounting ends; the upper end of the connecting frame is connected to one end of a brake wire (7), and the other end of the brake wire (7) passes out of the opening at the top end of the housing (1) and is connected to a brake handle; a first spring (8) is sleeved on the brake wire (7), and the lower end of the first spring (8) is connected to the connecting frame (3); a second spring (9) is sleeved on the brake wire (7) and the connecting frame (3), and the lower end of the second spring (9) is connected to the top end of the clamping sleeve (2); an adjusting bottom bracket (10) threadedly connected to the housing (1) is arranged at the bottom of the housing (1); a brake wire sleeve (11) is sleeved on the brake wire (7), one end of the brake wire sleeve (11) is connected to the brake handle, and a brake handle fine-tuning structure (12) is arranged at the other end of the brake wire sleeve (11), and the brake handle fine-tuning structure (12) is threadedly connected to the top of the housing (1).

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