CN201325031Y - a pin removal tool - Google Patents

Abstract

The utility model relates to a pin pulling tool, which comprises a wrench, a nail remover and a support member, wherein the nail remover includes a nail remover head and a nail remover rod, and the wrench is an inner hexagonal wrench or an outer hexagonal wrench. The head of the piece is an inner hexagonal head or an outer hexagonal head that can be matched with a wrench. The stem of the nail remover is a cylindrical rod, and the peripheral surface of its lower end is provided with an external thread that can cooperate with the internal thread of the pin. The support includes The support hole and the support pit connected up and down, the diameter of the support hole is smaller than the diameter of the nail head, larger than the diameter of the nail stem, and the inner diameter of the support pit is smaller than the pin head. Large diameter. The utility model solves the technical problems that the assembly and the pin are easily damaged when the pin is disassembled by the existing pin pulling tool, and is not conducive to repeated installation of the assembly. It has the advantages of reusability, convenient operation and labor saving.

Description

a pin removal tool

technical field

The utility model relates to a pin pulling tool.

Background technique

The pin is mainly used to fix the relative position between two assemblies, or realize the connection between the assemblies, etc. Generally, it is an interference fit. After the pin is tightened, it is difficult to come out. Therefore, when the pin is disassembled in the usual way, on the one hand, the assembly may be damaged, and on the other hand, the pin may also be destroyed. In particular, assembly parts that require high precision have high requirements for repeated installation accuracy, and are not allowed to cause impact and stress on the assembly parts. Ordinary pin removal tools cannot meet the requirements.

Contents of the invention

The purpose of this utility model is to propose a pin removal tool that can protect the assembly, reusable pins, easy to operate, and labor-saving, which solves the problem that the existing pin removal tool is easy to damage the assembly and the pin when disassembling the pin, which is not conducive to repeated installation The technical problem of assembly is a special tool suitable for pulling out cylindrical pins with internal threads and tapered pins with internal threads.

The technical solution of the utility model patent is:

A pin pulling tool, which is special in that it includes a wrench 1, a nail remover 2 and a support 4, the nail remover 2 includes a nail remover head 21 and a nail remover stem 22, the wrench 1 is an inner hexagonal wrench or an outer hexagonal wrench, the head 21 of the nail remover is an inner hexagonal head or an outer hexagonal head that can be matched with the wrench 1, and the rod 22 of the nail remover is a cylindrical rod. The peripheral surface of the lower end is provided with an external thread that can cooperate with the internal thread of the pin 6, and the support 4 includes a support through hole 41 and a support pit 42 that communicate up and down, and the diameter of the support through hole 41 is smaller than that of the nail. The diameter of the part head 21 is smaller than the diameter of the shank part 22 of the nail part, and the inner diameter of the supporting part recess 42 is larger than the diameter of the head part of the pin 5 .

The above-mentioned pin pulling tool includes at least one spacer 3 , the shape of the spacer 3 matches the support 4 , and a spacer through hole 31 passing through the upper and lower surfaces is provided.

The above-mentioned riser 3 may be a washer or a nut.

The above-mentioned nail remover 2 can be an inner hexagon screw, an outer hexagon screw, an inner hexagon bolt or an outer hexagon bolt.

The utility model has the following characteristics:

1. Using the pin pulling tool can not only protect the assembly, but also not damage the pins, and the pins can be reused.

2. It is easy to operate and labor-saving, and can be used for pulling out cylindrical pins with internal threads and tapered pins with internal threads.

3. The tool is easy to manufacture, and some parts can be obtained locally.

Description of drawings

Fig. 1 is a structural schematic diagram of the utility model; wherein: 1-wrench, 2-nail remover, 21-nail remover head, 22-nail remover stem, 3-raiser, 4-support, 41- Support member via hole, 42-support member recess, 5-assembly part, 6-pin.

Detailed ways

A pin pulling tool includes a wrench, a nail remover and a support. The nail remover includes a nail remover head and a nail remover rod. The wrench is an inner hexagon wrench or an outer hexagon wrench. The nail remover head is a removable The inner hexagonal head or the outer hexagonal head matched with the wrench, the rod part of the nail remover is a cylindrical rod, and the peripheral surface of the lower end is provided with an external thread that can cooperate with the internal thread of the pin. Holes and support pits, the diameter of the support hole is smaller than the diameter of the nail head, larger than the diameter of the nail stem, and the inner diameter of the support pit is larger than the diameter of the pin head. In order to adapt to pins of different sizes, the utility model pin pulling tool can also be equipped with at least one spacer. It is required that the center of the spacer needs to be provided with a spacer hole through the upper and lower surfaces. The spacer is generally a gasket-shaped part. , can be replaced by washers or nuts. The riser can be set under or above the support, or one or more risers can be set above and below the support; if the riser is set above the support, the diameter of the through hole is required It is smaller than the diameter of the head of the nail and larger than the diameter of the shaft of the nail. If the pad is placed under the support, the diameter of the through hole is required to be larger than the diameter of the pin head, and its upper surface should be able to Hold the support up. For the convenience of use, the pads can use standard gaskets or standard nuts of series sizes. The nail remover can be an inner hexagon screw, an outer hexagon screw, an inner hexagon bolt or an outer hexagon bolt.

When using the pin pulling tool, first place the riser on top of the assembly, then place the support on top of the riser, then place another riser on top of the support, and the stem of the jack Pass through the via hole of the upper riser, the via hole and the pit of the support member, and the via hole of the lower riser in sequence, and then correspond to the inner hole of the pin, and the head of the nail remover is supported on the upper surface of the riser. When the axial dimensions of the spacer and the support are appropriate, it can be ensured that the nail remover is screwed into the pin inner hole 1 to 3 buckles, and there is a space for the pin to be pulled out between the pin body and the support. When the pin is pulled out, when the wrench rotates the nail remover clockwise, the rod of the nail remover is screwed into the pin, and the relative position is shortened. Since the head of the nail remover is limited by the riser, the pin is pulled up.

Claims (4)

1, a kind of instrument of pulling pin, it is characterized in that: comprise spanner (1), nail nipping part (2) and support member (4), described nail nipping part (2) comprises nail nipping part head (21) and nail nipping part bar portion (22), described spanner (1) is inner hexagon spanner or outer-hexagonal spanner, described nail nipping part head (21) is the hexagon socket head portion or the outer-hexagonal head that can cooperate with spanner (1), described nail nipping part bar portion (22) is a cylindrical bar, its lower end circumferential surface be provided with can with the external screw thread of the screw-internal thread fit of pin (6), described support member (4) comprises support member via hole (41) and the support member pit (42) that communicates up and down, the diameter of described support member via hole (41) is little compared with the diameter of nail part head (21), diameter compared with nail part bar portion (22) is big, and the internal diameter of described support member pit (42) is bigger than the diameter of pin (5) head.

2, the instrument of pulling pin according to claim 1 is characterized in that: the described instrument of pulling pin also comprises at least one bed hedgehopping spare (3), and the shape of described bed hedgehopping spare (3) and support member (4) are complementary, and it is provided with the bed hedgehopping spare via hole (31) that connects upper and lower surface.

3, the instrument of pulling pin according to claim 2 is characterized in that: described bed hedgehopping spare (3) is pad or nut.

4, according to claim 1 or the 2 or 3 described instruments of pulling pin, it is characterized in that: described nail nipping part (2) can be soket head cap screw, outer-hexagonal screw, hexagon socket head cap screw or outer-hexagonal bolt.

Images