Mounting tool for piston connecting pin

Abstract

The utility model discloses a mounting tool for a piston connecting pin, which is characterized in that a piston comprises a first-stage piston and a second-stage piston, the first-stage piston and the second-stage piston are provided with connecting holes, the first-stage piston is provided with a bearing hole, and the first-stage piston and the second-stage piston are rotatably connected through the connecting pin penetrating through the connecting holes; the tool comprises a base and an extrusion mechanism installed on the base, the base is provided with a first positioning pin, a second positioning pin, a third positioning pin, a first limiting face and a clamping groove, the first positioning pin is fixed to the base and corresponds to a bearing hole of the first-stage piston, and the second positioning pin is arranged on the base in a telescopic mode. The tool is used for installing the piston pin, risks such as dangerousness of original manual installation and bearing damage are avoided, the structure is simple, rapid limiting can be achieved, operation is easy, and production efficiency is effectively improved.

Description

Technical Field

[0001] The utility model belongs to the field of air spring assembly tooling, in particular to an installation tooling for a piston connecting pin. Background Art

[0002] At present, when installing a certain piston assembly, the connecting pin connecting the primary and secondary pistons is difficult to limit. In the past, it was necessary to manually align the pin hole and the bearing hole. Because the connecting pin, the pin hole and the piston bearing are all interference fits, they have to be hammered in with a hammer, which will cause a large impact force on the piston bearing, causing damage to the bearing, and thus affecting the function of the product. Summary of the invention

[0003] The utility model aims to provide an installation tool for a piston connecting pin which has the advantages of accurate positioning, convenient installation and no damage.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions: a kind of installation tool for piston connecting pin, the piston includes a primary piston and a secondary piston, the primary piston and the secondary piston are provided with connecting holes, the primary piston is provided with a bearing hole, the primary piston and the secondary piston are rotatably connected by a connecting pin penetrated through the connecting hole, the tool includes a base, an extrusion mechanism installed on the base, the base is provided with a first positioning pin, a second positioning pin, a third positioning pin, a first limiting surface and a clamping groove, the first positioning pin is fixed to the base and is connected to the bearing hole of the primary piston Correspondingly, the second locating pin is telescopically arranged on the base. When one end of the secondary piston is clamped in the clamping groove and its side surface is in contact with the upper end surface on the base, and at the same time the first locating pin is passed through the bearing hole and the end surface of the first piston is in contact with the first limiting surface, the axis of the second locating pin is collinear with the axis of the connecting hole. The extrusion mechanism includes a support and a pressure column passed through the support. The support is sleeved on the third locating pin and fixedly connected to the base. When the pressure column is passed through the support, the axis of the pressure column is collinear with the axis of the second locating pin.

[0005] In another embodiment, the extrusion mechanism includes a support and a pressure column passing through the support, the support has a transverse block and longitudinal blocks extending downward from both ends of the transverse block, a clearance groove is formed between the longitudinal blocks, and the lower end of the pressure column passes through the transverse block, and the downward stroke of the pressure column on the transverse block is not less than the length of the connecting pin.

[0006] In another embodiment, the extrusion mechanism includes a pressure cap arranged on the upper end of the pressure column. When the first-stage piston and the second-stage piston are installed on the tooling and the connecting pin is placed on the connecting hole, when the pressure column passes through the transverse block and its lower end face contacts the upper end face of the connecting pin, the stroke of the pressure cap descending to fit the upper end face of the transverse block is the same as the length of the connecting pin.

[0007] In another embodiment, a first positioning hole is provided on the base, and the first positioning pin is fixed in the first positioning hole.

[0008] In another embodiment, a second positioning hole is provided on the base, a spring is provided in the second positioning hole, and the second positioning pin is provided in the second positioning hole and is located above the spring.

[0009] In another embodiment, a plurality of third positioning holes are provided on the base, the third positioning pins are fixed in the third positioning holes, and the support is fixedly sleeved on the third positioning pins.

[0010] In another embodiment, the base includes an upper base and a lower base, the first positioning pin and the third positioning pin are arranged on the upper base, and the second positioning pin passes through the upper base and the lower base.

[0011] In another embodiment, a magnetic block is built into the top of the second positioning pin.

[0012] The beneficial effects of the utility model are: 1. The use of tooling to install the piston pin avoids the danger of previous manual installation and the risk of bearing damage, and has a simple structure, can be quickly limited, and is easy to operate, effectively improving production efficiency; 2. The second locating pin is supported by a spring and can be installed in place with just one press, avoiding installation errors caused by multiple loading and unloading; and a magnet is installed on the top of the second locating pin, avoiding the problem of the second locating pin being difficult to remove after installation is completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is an exploded view of the utility model;

[0014] Figure 2 It is an assembly drawing of the utility model. DETAILED DESCRIPTION

[0015] The following is a detailed description of the present invention in conjunction with the embodiments shown in the accompanying drawings:

[0016] like Figure 2 As shown, the piston includes a primary piston A and a secondary piston B. The primary piston A and the secondary piston B are provided with connecting holes. The primary piston A and the secondary piston B are rotatably connected by a connecting pin passing through the connecting hole. The primary piston A is provided with a bearing hole.

[0017] like Figure 1-2 As shown, the installation tool of the piston connecting pin includes a base 3 and an extrusion mechanism installed on the base 3. The base 3 is provided with a first positioning pin 7, a second positioning pin 9, a third positioning pin 2, a first limiting surface 6, a clamping groove 33, a first positioning hole 70, a second positioning hole 90 and a third positioning hole 20. The first positioning pin 7 is fixed in the first positioning hole 70; a spring 5 is provided in the second positioning hole 90, and the second positioning pin 9 is arranged in the second positioning hole 90 and is located above the spring 5; the third positioning pin 2 is fixed in the third positioning hole 20. In this embodiment, the base 3 includes an upper base 31 and a lower base 32 connected by bolts 8. The first positioning pin 7, the third positioning pin 2 and the first limiting surface 6 are arranged on the upper base 31. The first limiting surface 6 is perpendicular to the upper end surface of the upper base 31. The second positioning pin 9 is penetrated on the upper base 31 and the lower base 32, and a magnetic block is built into the top of the second positioning pin 9.

[0018] The first locating pin 7 is fixed on the base 3 and corresponds to the bearing hole of the first-stage piston A. The second locating pin 9 is telescopically arranged on the base 3. When one end of the second-stage piston B is clamped in the clamping groove 33 and its side surface is in contact with the upper end surface of the base 3, and at the same time, the first locating pin 7 is passed through the bearing hole and the end surface of the first-stage piston A is in contact with the first limiting surface 6, the axis of the second locating pin 9 is collinear with the axis of the connecting hole. The extrusion mechanism includes a support 1 and a pressure column 41 passed through the support 1. The support 1 is sleeved on the third locating pin 2 and fixedly connected to the base 3. When the pressure column 41 is passed through the support 1, the axis of the pressure column 41 is collinear with the axis of the second locating pin 9.

[0019] The extrusion mechanism includes a support 1, a pressure column 41 penetrated on the support 1, and a pressure cap 42 arranged on the upper end of the pressure column 41. The support 1 has a transverse block 11 and longitudinal blocks 12 extending downward from both ends of the transverse block 11. A clearance groove is formed between the longitudinal blocks 12, and the lower end of the longitudinal blocks 12 is penetrated on the transverse block 11. The downward stroke of the pressure column 41 on the transverse block 11 is not less than the length of the connecting pin. The support 1 is fixedly sleeved on the third positioning pin 2; when the first-stage piston A and the second-stage piston B are installed on the tooling and the connecting pin is placed on the connecting hole, after the pressure column 41 passes through the transverse block 11, its lower end face contacts with the upper end face of the connecting pin, and the downward stroke of the pressure cap 42 to fit with the upper end face of the transverse block 11 is the same as the length of the connecting pin.

[0020] The base profiles the piston contour, enabling the piston to be placed on the base completely stably. Insert the first positioning pin 7 into the bearing hole and the first positioning hole of the first-stage piston to limit the first-stage piston. Similarly, install the 6 springs and the second positioning pin into the second positioning hole on the base, and insert the second positioning pin into the connection hole between the first-stage piston and the second-stage piston. Thus, the piston assembly can be completely limited. Then install the support 1 on the base 3, place the piston pin into the connection hole, use a press to push the compression cap and then push the compression column down. When the lower surface of the compression cap is completely fitted with the upper surface of the transverse block 11, the piston pin can be press-fitted in place.

[0021] The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly. It should not be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. An installation tool for a piston connecting pin, the piston comprising a primary piston and a secondary piston, the primary piston and the secondary piston being provided with connecting holes, the primary piston being provided with a bearing hole, the primary piston and the secondary piston being rotatably connected by a connecting pin passing through the connecting holes, the tool comprising a base and a pressing mechanism mounted on the base, characterized in that: The base is provided with a first locating pin, a second locating pin, a third locating pin, a first limiting surface and a clamping groove, the first locating pin is fixed to the base and corresponds to the bearing hole of the first-stage piston, the second locating pin is telescopically arranged on the base, when one end of the second-stage piston is clamped in the clamping groove and its side surface is in contact with the upper end surface of the base, and at the same time, the first locating pin is passed through the bearing hole and the end surface of the first-stage piston is in contact with the first limiting surface, the axis of the second locating pin is collinear with the axis of the connecting hole, the extrusion mechanism includes a support and a pressure column passed through the support, the support is sleeved on the third locating pin and fixedly connected to the base, when the pressure column is passed through the support, the axis of the pressure column is collinear with the axis of the second locating pin.

2. The installation tooling for the piston connecting pin according to claim 1, characterized in that: The extrusion mechanism includes a support and a pressure column passing through the support. The support has a transverse block and longitudinal blocks extending downward from both ends of the transverse block. A clearance groove is formed between the longitudinal blocks, and the lower end of the pressure column passes through the transverse block. The downward stroke of the pressure column on the transverse block is not less than the length of the connecting pin.

3. The installation tooling for the piston connecting pin according to claim 2, wherein: The extrusion mechanism includes a pressure cap arranged on the upper end of the pressure column. When the first-stage piston and the second-stage piston are installed on the tooling and the connecting pin is placed on the connecting hole, when the pressure column passes through the transverse block and its lower end face contacts the upper end face of the connecting pin, the stroke of the pressure cap descending to fit the upper end face of the transverse block is the same as the length of the connecting pin.

4. The installation tooling for the piston connecting pin according to claim 1, characterized in that: The base is provided with a first positioning hole, and the first positioning pin is fixed in the first positioning hole.

5. The installation tooling for the piston connecting pin according to claim 1, characterized in that: The base is provided with a second positioning hole, a spring is provided in the second positioning hole, and the second positioning pin is provided in the second positioning hole and is located above the spring.

6. The installation tooling for the piston connecting pin according to claim 1, characterized in that: The base is provided with a plurality of third positioning holes, the third positioning pins are fixed in the third positioning holes, and the support is fixedly sleeved on the third positioning pins.

7. The installation tooling for the piston connecting pin according to claim 5, characterized in that: The base includes an upper base and a lower base, the first positioning pin and the third positioning pin are arranged on the upper base, and the second positioning pin passes through the upper base and the lower base.

8. The installation tooling for the piston connecting pin according to claim 1, characterized in that: A magnetic block is built into the top of the second positioning pin.

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