CN209954607U

CN209954607U - Spring mounting tool

Info

Publication number: CN209954607U
Application number: CN201821995783.1U
Authority: CN
Inventors: 刘长军; 符长青
Original assignee: China Aviation Industry Standard Parts Manufacturing Co Ltd
Current assignee: China Aviation Industry Standard Parts Manufacturing Co Ltd
Priority date: 2018-11-30
Filing date: 2018-11-30
Publication date: 2020-01-17
Anticipated expiration: 2028-11-30

Abstract

The utility model discloses a spring mounting tool, including kicking block (2), urceolus (3), ejector pin (4), pressure cap (7), its characterized in that: a plurality of kicking blocks (2) are installed in the draw-in groove on urceolus (3) and can slide from top to bottom along radial, the narrow range rotates, lasso (1) is equipped with to kicking block (2) outside hoop, locking nut (5) are equipped with to urceolus (3) afterbody, ejector pin (4) are movably installed inside urceolus (3) and run through locking nut (5), ejector pin (4) afterbody is equipped with presses cap (7), press and be equipped with return spring (6) between cap (7) and locking nut (5), return spring (6) suit is on ejector pin (4). The utility model discloses simple structure, respond well, convenient operation, reliable and stable are fit for spring mounting's using widely.

Description

Spring mounting tool

Technical Field

The utility model belongs to the technical field of the spring appurtenance, relate to a spring mounting tool particularly.

Background

Spring mounting is quite common during production. Part of the parts (the head end face is provided with a ring groove, a blind hole and a longitudinal groove) needs to be provided with a spring in the ring groove during use (see figures 3 to 7). Because the internal diameter of waiting to install the spring is less than part annular groove tank bottom external diameter, need the spring hole expansion grow in the elastic deformation within range in the installation, cross the annular groove shoulder excircle of part terminal surface department and reach the annular position, then the spring withdrawal can be installed in the annular, spring hole and part annular groove tank bottom excircle be in close contact with under the effect of spring force.

The spring inner hole needs to overcome the spring force when expanding, and the shape of the spring shows that if the installation is carried out by means of a tool, the acting point of the tool should be selected in the spring inner hole because no part of the outer circle of the spring can act on the force. When the spring is installed, a tool used cannot interfere with the part so as to avoid damaging the part. There is currently no suitable spring installation tool that meets the structural and functional requirements described above.

Disclosure of Invention

The utility model aims to overcome above-mentioned shortcoming and provide a simple structure, respond well, convenient operation, reliable and stable spring mounting tool.

The utility model discloses the purpose and solve its main technical problem and adopt following technical scheme to realize:

the utility model discloses a spring mounting tool, including kicking block, urceolus, ejector pin, pressure cap, wherein: the ejector blocks are arranged in the clamping grooves on the outer barrel and can slide up and down along the radial direction and rotate in a small range, the outer portion of each ejector block is hooped with a ferrule, the tail portion of the outer barrel is provided with a locking nut, the ejector rod is movably arranged in the outer barrel and penetrates through the locking nut, the tail portion of the ejector rod is provided with a pressing cap, a return spring is arranged between the pressing cap and the locking nut, and the return spring is sleeved on the ejector rod.

The above-mentioned spring installation tool, wherein: the ejector rod is limited with the end surface of the inner side of the locking nut through the step surface.

The above-mentioned spring installation tool, wherein: the step section of the ejector rod is matched with an inner conical surface arranged in the outer barrel through an outer conical surface.

The above-mentioned spring installation tool, wherein: the head of the ejector rod is matched with the conical surface arranged on the ejector block through the outer conical surface.

The above-mentioned spring installation tool, wherein: the ferrule is a rubber ring.

The above-mentioned spring installation tool, wherein: the front part of the ferrule is provided with a step mounting part.

Compared with the prior art, the utility model obvious advantage and beneficial effect have. According to the technical scheme, in the spring mounting tool, the plurality of the ejector blocks are mounted in the clamping grooves in the outer barrel and can slide up and down along the radial direction, the ejector blocks are utilized to realize the expansion of the spring to be mounted so as to facilitate mounting, the locking nut is mounted at the tail part of the outer barrel, the outer barrel is used for positioning between the tool and a part, and the clamping grooves on the outer barrel limit the movement mode and direction of the ejector blocks; the ejector rod is movably arranged in the outer barrel and penetrates through the locking nut, the tail part of the ejector rod is provided with a pressing cap, and the axial force applied from the outside is transmitted by the ejector rod and is converted into an outward radial force to act on the ejector block; the ejector rod is limited with the end surface of the inner side of the locking nut through the step surface, the movement stroke of the ejector rod is limited, the ejector rod does not fall out of the outer barrel, and the ejector rod plays a role in supporting a return spring; a return spring is arranged between the pressing cap and the locking nut, the return spring is sleeved on the ejector rod, and the return spring is used for returning the ejector rod to the initial position and enabling the expanded ejector block to retract under the combined action of the ejector rod and the rubber ring; the front part of the ferrule is provided with a step mounting part, so that a spring to be mounted is conveniently mounted; the outside of the top block is hooped with a ferrule, so that the top block does not fall off the outer cylinder. In a word, the utility model discloses simple structure, respond well, convenient operation, reliable and stable are fit for spring mounting's using widely.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a left side view of FIG. 1;

FIG. 3 is a schematic structural view of a part;

FIG. 4 is a right side view of FIG. 3;

FIG. 5 is a schematic view of the spring after installation;

FIG. 6 is a schematic structural view of a spring to be installed;

FIG. 7 is a left side view of FIG. 6;

fig. 8 is a usage state diagram of the present invention.

The labels in the figure are:

1. a ferrule; 2. a top block; 3. an outer cylinder; 4. a top rod; 5. locking the nut; 6. a return spring; 7. pressing the cap; 8. a part; 9. a ring groove; 10. blind holes; 11. a spring is to be installed; 12. a longitudinal slot.

Detailed Description

The following detailed description of embodiments, structures, features and effects of the spring installation tool according to the present invention will be made with reference to the accompanying drawings and preferred embodiments.

Referring to fig. 1 to 2, the spring mounting tool of the present invention comprises a top block 2, an outer cylinder 3, a top rod 4, and a pressing cap 7, wherein: the ejector blocks 2 are installed in clamping grooves in the outer barrel 3 and can slide up and down along the radial direction and rotate in a small range, the ferrule 1 is hooped outside the ejector blocks 2, the locking nut 5 is installed at the tail of the outer barrel 3, the ejector rod 4 is movably installed inside the outer barrel 3 and penetrates through the locking nut 5, the pressing cap 7 is installed at the tail of the ejector rod 4, the return spring 6 is installed between the pressing cap 7 and the locking nut 5, and the return spring 6 is sleeved on the ejector rod 4. The ejector rod 4 is limited with the end surface of the inner side of the locking nut 5 through a step surface. The step section of the mandril 4 is matched with an inner conical surface arranged in the outer cylinder 3 through an outer conical surface. The head of the ejector rod 4 is matched with the conical surface arranged on the ejector block 2 through an external conical surface. The ferrule 1 is a rubber ring. The front part of the ferrule 1 is provided with a step mounting part.

During the use, refer to fig. 8, install on the anterior step installation department of lasso 1 and wait to install spring 11, insert the blind hole 10 on the part 8 right-hand member face with the cylinder of urceolus 3 leftmost end, stretch into the terminal surface of part 8 with the left end of three kicking block 2 simultaneously and lead to annular 9, along the three vertical groove 12 of axial interval 120 degrees in, guarantee to wait to install spring 11 left end and the laminating of part 8 right-hand member face. Applying a leftward axial force on the pressing cap 7 to push the ejector rod 4 to move leftward, generating an outward radial component force through a contact inclined plane of the ejector rod 4 and the ejector block 2, pushing the ejector block 2 to slide radially outward, and expanding the diameter of an inner hole of a spring 11 to be installed until the diameter is larger than the outer diameter of a groove shoulder of a right end face ring groove 9 of a part 8; meanwhile, under the combined action of the radial component force F and the spring component force G, the ejector block 2 inclines leftwards, so that the spring 11 to be installed is subjected to a leftward component force to push the spring 11 to be installed to move leftwards to reach the position above the annular groove 9 of the part 8, the axial force externally applied to the pressing cap 7 is stopped at the moment, the ejector rod 4 moves rightwards under the pushing of the resilience force of the compressed return spring 6, the ejector block 2 loses support, the ejector block 2 retracts under the action of the resilience force of the spring 11 to be installed and the ferrule 1, and the spring 11 to be installed enters the annular groove 9, and installation is completed. Then, the compressed return spring 6 continues to rebound, and pushes the ejector rod 4 to move rightwards until the right end face of the step of the ejector rod is contacted with the left end face of the step in the inner hole of the locking nut 5, so that the ejector rod 4 is limited to move rightwards. Meanwhile, the expanded jacking blocks 2 continue to centripetally slide and contract under the action of the elastic force of the ferrule 1 until the jacking blocks are mutually contacted, and the tool is restored to the state before working. The utility model discloses simple structure, respond well, convenient operation, reliable and stable are fit for spring mounting's using widely.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any form, and any simple modification, equivalent change and modification made by the technical spirit of the present invention to the above embodiments do not depart from the technical solution of the present invention.

Claims

1. The utility model provides a spring mounting tool, includes kicking block (2), urceolus (3), ejector pin (4), presses cap (7), its characterized in that: a plurality of kicking blocks (2) are installed in the draw-in groove on urceolus (3) and can slide from top to bottom along radial, the narrow range rotates, lasso (1) is equipped with to kicking block (2) outside hoop, locking nut (5) are equipped with to urceolus (3) afterbody, ejector pin (4) are movably installed inside urceolus (3) and run through locking nut (5), ejector pin (4) afterbody is equipped with presses cap (7), press and be equipped with return spring (6) between cap (7) and locking nut (5), return spring (6) suit is on ejector pin (4).

2. The spring installation tool of claim 1, wherein: the ejector rod (4) is limited with the end surface of the inner side of the locking nut (5) through a step surface.

3. The spring installation tool of claim 1, wherein: the step section of the ejector rod (4) is matched with an inner conical surface arranged in the outer cylinder (3) through an outer conical surface.

4. The spring installation tool of claim 1, wherein: the head of the ejector rod (4) is matched with the conical surface arranged on the ejector block (2) through the outer conical surface.

5. The spring installation tool of claim 1, wherein: the ferrule (1) is a rubber ring.

6. The spring installation tool of claim 1, wherein: the front part of the ferrule (1) is provided with a step mounting part.