CN218927658U - Tool for directionally mounting cylindrical cotter pin of speed changer - Google Patents
Tool for directionally mounting cylindrical cotter pin of speed changer Download PDFInfo
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- CN218927658U CN218927658U CN202223154276.4U CN202223154276U CN218927658U CN 218927658 U CN218927658 U CN 218927658U CN 202223154276 U CN202223154276 U CN 202223154276U CN 218927658 U CN218927658 U CN 218927658U
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- sleeve
- thimble
- cotter pin
- tool
- cylindrical
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Abstract
The utility model discloses a tool for directionally mounting a cylindrical cotter pin of a speed changer, which comprises a sleeve, wherein a U-shaped hole is formed in the side wall of the sleeve, a thimble is arranged in the sleeve, openings are formed at two ends of the sleeve, the thimble can freely slide in the sleeve by arranging the U-shaped hole on the sleeve for placing the cylindrical cotter pin, the cylindrical cotter pin is pushed, the inner side wall of the outlet of the sleeve is protruded to form a conical surface structure, so that the cylindrical cotter pin is extruded from the outlet end of the sleeve after being contracted along the conical surface under the condition of stress, and meanwhile, the end face of the outlet end of the sleeve is arc-shaped and can be matched with the cylindrical surface of the speed changer.
Description
Technical Field
The utility model belongs to the technical field of cotter pin installation, and particularly relates to a tool for directionally installing a cylindrical cotter pin of a speed changer.
Background
The cotter pin is used for preventing the threaded connection from loosening. After the nut is screwed, the cotter pin is inserted into the nut groove and the tail hole of the bolt, and the tail of the cotter pin is pulled open, so that the nut and the bolt are prevented from rotating relatively. Cotter pin is a metal hardware, commonly known as spring pin.
Cotter pins are used in many mechanical arrangements, such as those used in transmissions. The cotter pin in the speed changer is not loosened due to long use, and the tension force of the cotter pin after compression is very large, so that the diameter of the cotter pin in a loose state is larger than that of the mounting hole, and therefore, the cotter pin is smoothly and directionally mounted in the corresponding hole after being compressed, and a certain difficulty exists.
Disclosure of Invention
The utility model aims to provide a tool for directionally mounting a cylindrical cotter pin of a speed changer, which aims to solve the problem that the cylindrical cotter pin of the speed changer is difficult to directionally mount in the prior art.
The utility model provides a instrument for directional installation derailleur cylinder cotter pin, includes thimble and sleeve, and the sleeve lateral wall is opened there is the U-shaped hole, the thimble sets up inside the sleeve, and the sleeve both ends are equipped with the opening, and sleeve tip exit sleeve inside wall is protruding to form conical surface structure, and the terminal surface of sleeve tip exit is circular-arc.
Further, a pin hole is formed in the side wall of one end of the sleeve.
Further, the length of the thimble is not smaller than the length of the sleeve.
Furthermore, a thimble cap is arranged at one end of the thimble outside the sleeve, and the thimble cap are of an integrated structure.
Furthermore, one end of the thimble in the sleeve is of a conical structure.
Further, one side of the middle part of the thimble is outwards provided with a bulge, and the other side is inwards recessed.
Further, the side wall of the sleeve is provided with a U-shaped hole, and the side wall of the position of the U-shaped hole is concave.
Further, the diameter of the opening at the outlet of the end part of the sleeve is smaller than the height of the end part of the thimble.
Compared with the prior art, the utility model has the following beneficial technical effects:
according to the tool for directionally mounting the cylindrical cotter pin of the speed changer, the U-shaped holes are formed in the sleeve and used for placing the cylindrical cotter pin, the holes are formed in the two ends of the sleeve, the channels are formed in the sleeve, the thimble can slide freely in the sleeve and push the cylindrical cotter pin, the inner side wall of the outlet of the sleeve is protruded to form a conical surface structure, so that the cylindrical cotter pin is extruded from the outlet end of the sleeve after being contracted along the conical surface under the condition of stress, meanwhile, the end face of the outlet end of the sleeve is arc-shaped and can be matched with the cylindrical surface of the speed changer, and the diameter is smaller than that of the mounting hole of the speed changer due to the contracted state when the cylindrical cotter pin is extruded, so that the direct directional mounting of the cylindrical cotter pin of the speed changer can be completed by using the tool.
Preferably, the side wall of the end part of the sleeve is provided with a pin hole, the middle part of the thimble is provided with a bulge, and a threaded pin arranged on the sleeve is matched with the bulge on the thimble, so that the limit of the thimble can be realized, and the thimble is prevented from sliding out of the sleeve.
Preferably, the end part of the thimble is provided with a thimble cap which is of an integrated structure, and the thimble cap is arranged to facilitate the stress of the end part of the thimble.
Preferably, the end part of the thimble in the sleeve is of a conical structure, the diameter of an opening at the outlet of the end part of the sleeve is smaller than the height of the end part of the thimble, and the thimble is matched with the conical surface structure at the outlet end of the sleeve, so that the thimble can completely push out the cylindrical opening pin and the thimble cannot extend out from the outlet of the sleeve.
Drawings
FIG. 1 is a cross-sectional view of a tool for directional installation of a cylindrical cotter pin of a transmission in an embodiment of the utility model.
FIG. 2 is a block diagram of a tool for directional installation of a cylindrical cotter pin of a transmission in an embodiment of the utility model.
In the figure, 1, a sleeve; 2. a thimble; 3. a pin hole; 4. a thimble cap; 5. a U-shaped hole; 6. a threaded pin.
Detailed Description
In order that those skilled in the art will better understand the present utility model, a technical solution in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.
As shown in figures 1 and 2, a tool for directionally mounting a cylindrical cotter pin of a speed changer comprises a thimble 2 and a sleeve 1, wherein a U-shaped hole 5 is formed in the side wall of the sleeve 1, the thimble 2 is arranged inside the sleeve 1, openings are formed in two ends of the sleeve 1, the end face of the outlet of the end part of the sleeve 1 is circular arc-shaped, specifically, the opening of the sleeve 1 from the inlet end of the sleeve 1 to the opening of the U-shaped hole 5 is cylindrical, the opening of the U-shaped hole 5 is square to the outlet end of the sleeve 1, a channel is formed in the sleeve 1, the thimble 2 is arranged in the channel of the sleeve 1, the thimble 2 can freely slide in the sleeve 1, the end face of the outlet of the sleeve 1 is circular arc-shaped, the circular arc-shaped design can adapt to the directional mounting of a cylindrical surface, the thimble 2 is pushed to press the cylindrical cotter pin, the cylindrical cotter pin is extruded by pushing the cylindrical cotter pin, the end part of the cylindrical cotter pin is extruded along the conical surface of the outlet of the sleeve 1, the cylindrical cotter pin is contracted, the diameter is smaller than the mounting hole, and the circular arc-shaped design of the end face of the sleeve 1 is matched with the cylindrical surface of the speed changer, so that the cylindrical cotter pin can be directly led into the cylindrical cotter pin, the direct mounting structure is achieved, and the directional mounting tool is convenient, and the directional mounting structure is realized.
As shown in fig. 1 and 2, the end part of the thimble 2 is provided with the thimble cap 4, the thimble cap 4 and the thimble 2 are in an integrated structure, the length of the thimble 2 is not less than that of the sleeve 1, the end part of the thimble 2 positioned at one side of the outlet of the sleeve 1 is in a conical surface structure and is matched with the conical surface design of the outlet end of the sleeve 1, so that the purpose is to ensure that the thimble 2 can push out a cylindrical cotter pin from the sleeve 1, one side of the middle part of the thimble 2 is outwards provided with a bulge, the other side of the thimble 2 is inwards sunken, the side wall of the end part at the inlet of the sleeve 1 is provided with a pin hole 3, a threaded pin 6 is arranged in the pin hole, the bulge part of the thimble 2 is matched with the threaded pin 6 arranged on the sleeve 1 to limit the thimble 2, the thimble 2 is prevented from sliding out of the sleeve 1, and the other side is inwards sunken to reduce the height of the rear part of the thimble 2, so that the rear part of the thimble 2 can enter the sleeve 1 to be contacted with the cylindrical cotter pin.
The sleeve 1 lateral wall is opened there is U-shaped hole 5 for put into sleeve 1 with the cylinder cotter pin, sleeve 1 lateral wall is opened there is U-shaped hole 5 position department lateral wall indent, makes the front end part of thimble 2 can not get into the second half section of sleeve 1, simultaneously, sleeve 1 tip exit opening diameter is less than the height of thimble 2 tip for prevent that thimble 2 from stretching out the exit end of sleeve 1.
When the cylindrical cotter pin is used, the cylindrical cotter pin is placed into the U-shaped hole 5, the ejector pin 2 is pushed to compress the cylindrical cotter pin, the ejector pin cap 4 at the end part of the ejector pin 2 is knocked by force (a hammer), the cylindrical cotter pin is extruded from the sleeve outlet after being contracted along the conical surface under the condition of stress, the cylindrical cotter pin is in a contracted state when being extruded, and the diameter of the cylindrical cotter pin is smaller than that of the mounting hole, so that the cylindrical cotter pin can be directly led into the mounting hole, and the directional mounting of the cylindrical cotter pin can be realized through the design of the circular arc surface at the outlet of the sleeve 1.
The present utility model is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present utility model are intended to be included in the scope of the present utility model.
Claims (8)
1. A tool for directionally mounting a cylindrical cotter pin of a speed changer is characterized by comprising a thimble (2) and a sleeve (1), wherein a U-shaped hole (5) is formed in the side wall of the sleeve (1), the thimble (2) is arranged inside the sleeve (1), openings are formed in two ends of the sleeve (1), the inner side wall of the sleeve (1) at the outlet of the end part of the sleeve (1) protrudes to form a conical surface structure, and the end face at the outlet of the end part of the sleeve (1) is arc-shaped.
2. A tool for directional mounting of a transmission cylindrical cotter according to claim 1, characterized in that the side wall of one end of the sleeve (1) is provided with a pin hole (3).
3. A tool for directional mounting of a transmission cylindrical cotter according to claim 1, characterized in that the length of the thimble (2) is not less than the length of the sleeve (1).
4. A tool for directional mounting of a cylindrical cotter pin of a transmission according to claim 1, characterized in that one end of the outer thimble (2) of the sleeve (1) is provided with a thimble cap (4), and the thimble (2) and the thimble cap (4) are of an integral structure.
5. A tool for directional mounting of a cylindrical cotter pin of a transmission according to claim 1, characterized in that one end of the inner thimble (2) of the sleeve (1) is of conical configuration.
6. A tool for directional mounting of a cylindrical cotter of a transmission according to claim 1, characterized in that the centre of the thimble (2) is provided with a protrusion outwards on one side and a recess inwards on the other side.
7. A tool for directional mounting of a transmission cylindrical cotter according to claim 1, characterized in that the side wall of the sleeve (1) is recessed at the location of the U-shaped hole (5).
8. A tool for directional mounting of a cylindrical cotter pin of a transmission according to claim 1, characterized in that the diameter of the opening at the end outlet of the sleeve (1) is smaller than the height of the end of the thimble (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223154276.4U CN218927658U (en) | 2022-11-25 | 2022-11-25 | Tool for directionally mounting cylindrical cotter pin of speed changer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223154276.4U CN218927658U (en) | 2022-11-25 | 2022-11-25 | Tool for directionally mounting cylindrical cotter pin of speed changer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218927658U true CN218927658U (en) | 2023-04-28 |
Family
ID=86061102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223154276.4U Active CN218927658U (en) | 2022-11-25 | 2022-11-25 | Tool for directionally mounting cylindrical cotter pin of speed changer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218927658U (en) |
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2022
- 2022-11-25 CN CN202223154276.4U patent/CN218927658U/en active Active
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