CN218488304U

CN218488304U - Eccentric shaft for electric impact hammer

Info

Publication number: CN218488304U
Application number: CN202222178364.1U
Authority: CN
Inventors: 胡如勇
Original assignee: Cixi Yongli Electric Tools Co ltd
Current assignee: Cixi Yongli Electric Tools Co ltd
Priority date: 2022-08-18
Filing date: 2022-08-18
Publication date: 2023-02-17
Anticipated expiration: 2032-08-18

Abstract

The utility model relates to an eccentric shaft field discloses an eccentric shaft for electric impact hammer, including the second pivot, second pivot top is provided with the shifting chute, shifting chute left end top is provided with the second spout, second spout inner wall sliding connection has the sliding closure, sliding closure right-hand member fixedly connected with pushes away the post, the first slider of post right-hand member bottom fixedly connected with, both sides all rotate around the first slider right-hand member and are connected with the connecting plate, the equal rotation of connecting plate mutually opposite end is connected with the second slider, the equal fixedly connected with fixed column of second slider back of the body one end mutually. The utility model discloses in, through the design of simple structure to realize convenient to detach change key axle, and then realize reducing the waste of resource, when the installation, save time, and can reduce the moment that the moment of torsion consumed, can prevent simultaneously that crackle, damage and fracture from appearing in the eccentric shaft, prolong the life of eccentric shaft.

Description

Eccentric shaft for electric impact hammer

Technical Field

The utility model relates to an eccentric shaft field especially relates to an eccentric shaft for electric impact hammer.

Background

The electric impact hammer is an electric rotary hammer drill with a safety clutch and a pneumatic hammering mechanism, the electric impact hammer compresses a gas impact drill bit by utilizing the principle of piston motion, and an eccentric shaft can be used when the electric impact hammer is used, so that the eccentric shaft for the electric impact hammer is provided.

When the existing eccentric shaft is used, the damage of the spline teeth can occur, so that the whole eccentric shaft needs to be replaced, the problem cannot be solved by replacing the spline teeth, resources are wasted, and in the replacement process, the spline teeth are inconvenient to install quickly, so that time can be wasted.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing an eccentric shaft for an electric impact hammer.

In order to realize the purpose, the utility model adopts the following technical scheme: the utility model provides an eccentric shaft for electric impact hammer, includes the second pivot, second pivot top is provided with the shifting chute, shifting chute left end top is provided with the second spout, second spout inner wall sliding connection has the sliding closure, sliding closure right-hand member fixedly connected with post pusher, the first slider of post pusher right-hand member bottom fixedly connected with, both sides are all rotated around the first slider right-hand member and are connected with the connecting plate, the connecting plate is carried on the back mutually and is all rotated and be connected with the second slider in the one end of the back of the body, the equal fixedly connected with fixed column of the back mutually of the body one end of second slider, post pusher left end bottom fixedly connected with spring, second pivot right side is provided with the spline tooth, the spline tooth left end is provided with the recess, both ends all are provided with the fixed slot around the recess.

As a further description of the above technical solution:

the bottom end of the push column is slidably connected to the bottom end of the moving groove.

As a further description of the above technical solution:

both ends right side all is provided with first spout around the second pivot, the equal sliding connection of first spout inner wall is at the fixed column outer wall.

As a further description of the above technical solution:

the second rotating shaft is matched with the groove in shape.

As a further description of the above technical solution:

the fixing column is matched with the fixing groove in shape.

As a further description of the above technical solution:

the left end of the second rotating shaft is fixedly connected with a connecting shaft, and the left end of the connecting shaft is fixedly connected with a first rotating shaft.

As a further description of the above technical solution:

the second rotating shaft axis is arranged on the first rotating shaft axis.

As a further description of the above technical solution:

the left end of the spring is fixedly connected to the bottom of the left end of the movable groove.

The utility model discloses following beneficial effect has:

1. the utility model discloses in, at first, it takes first slider to remove to push away the plunger area, and the extrusion spring, first slider area connecting plate removes, the connecting plate area second slider removes, the second slider area fixed column removes, take the fixed column out from the fixed slot in the spline tooth, thereby realize convenient to detach change key shaft, and then realize reducing the waste of resource, after the change, inject the recess on the spline tooth to the second pivot in, at this moment, loosen the plunger because the resilience of spring makes the fixed column inject in the fixed slot on the spline tooth, and convenient for installation, and the time is saved, and the work efficiency is improved.

2. The utility model discloses in, through first pivot and the second pivot that is provided with to the axial lead of first pivot is on same straight line with the axial lead of second pivot, so can reduce the moment that the moment of torsion consumed, can prevent simultaneously that crackle, damage and fracture from appearing in the eccentric shaft, prolongs the life of eccentric shaft.

Drawings

Fig. 1 is a left front perspective view of an eccentric shaft for an electric impact hammer according to the present invention;

fig. 2 is a schematic view of a moving groove structure of an eccentric shaft for an electric impact hammer according to the present invention;

fig. 3 is a schematic view of a second rotating shaft section structure of the eccentric shaft for the electric impact hammer of the present invention;

fig. 4 is a left side view of the eccentric shaft for the electric impact hammer of the present invention.

Illustration of the drawings:

1. a groove; 2. spline teeth; 3. fixing a column; 4. a first rotating shaft; 5. a connecting shaft; 6. a second rotating shaft; 7. a sliding cover; 8. pushing the column; 9. fixing grooves; 10. a first chute; 11. a second chute; 12. a moving groove; 13. a spring; 14. a first slider; 15. a second slider; 16. a connecting plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

Referring to fig. 1-4, the present invention provides an embodiment: an eccentric shaft for an electric impact hammer comprises a second rotating shaft 6, a moving groove 12 is arranged at the top end of the second rotating shaft 6, a second sliding groove 11 is arranged at the top of the left end of the moving groove 12, the inner wall of the second sliding groove 11 is connected with a sliding cover 7 in a sliding manner, the right end of the sliding cover 7 is fixedly connected with a push column 8, the bottom of the right end of the push column 8 is fixedly connected with a first slide block 14, the front side and the back side of the right end of the first slide block 14 are respectively and rotatably connected with a connecting plate 16, the opposite end of the connecting plate 16 is respectively and rotatably connected with a second slide block 15, the opposite end of the second slide block 15 is respectively and fixedly connected with a fixed column 3, the bottom of the left end of the push column 8 is fixedly connected with a spring 13, the left end of the spring 13 is fixedly connected with the bottom of the left end of the moving groove 12, spline teeth 2 are arranged on the right side of the second rotating shaft 6, the left end of the spline tooth 2 is provided with a groove 1, both ends all are provided with fixed slot 9 around the groove 1, push away the pushing ram 8 and take first slider 14 to remove, and extrusion spring 13, first slider 14 takes connecting plate 16 to remove, connecting plate 16 takes second slider 15 to remove, second slider 15 takes fixed column 3 to remove, take out fixed column 3 from the fixed slot 9 in the spline tooth 2, thereby realize convenient to detach and change the key shaft, and then realize reducing the waste of resources, after changing, inject second pivot 6 into groove 1 on the spline tooth 2, at this moment loosen pushing ram 8 because the resilience of spring 13 makes fixed column 3 inject in the fixed slot 9 on the spline tooth 2, the installation of being convenient for, save time, and improve work efficiency.

8 bottom sliding connection of post pushes away in the 12 bottoms of shifting chute, prescribes a limit to the post 8 through shifting chute 12, and both ends right side all is provided with first spout 10 around the second pivot 6, and the equal sliding connection of first spout 10 inner walls is in 3 outer walls of fixed column, prescribes a limit to fixed column 3 through first spout 10, and second pivot 6 agrees with 1 shape of recess mutually, and fixed column 3 agrees with mutually with the fixed slot 9 shape, and the convenient dismantlement and the installation of agreeing with mutually in shape.

The left end of the second rotating shaft 6 is fixedly connected with the connecting shaft 5, the left end of the connecting shaft 5 is fixedly connected with the first rotating shaft 4, the shaft axis of the second rotating shaft 6 is arranged on the shaft axis of the first rotating shaft 4, when the electric impact hammer is used, the first rotating shaft 4 and the second rotating shaft 6 are arranged, and the shaft axis of the first rotating shaft 4 and the shaft axis of the second rotating shaft 6 are on the same straight line, so that the moment consumed by torque can be reduced, meanwhile, the eccentric shaft can be prevented from cracking, damaging and breaking, the service life of the eccentric shaft is prolonged, and the electric impact hammer has a good damping system, so that an operator can comfortably grip and relieve fatigue.

The working principle is as follows: firstly, the pushing column 8 is pushed to drive the first sliding block 14 to move, the spring 13 is extruded, the first sliding block 14 drives the connecting plate 16 to move, the connecting plate 16 drives the second sliding block 15 to move, the second sliding block 15 drives the fixed column 3 to move, the fixed column 3 is pulled out of the fixed groove 9 in the spline tooth 2, so that the key shaft is convenient to disassemble and replace, and further the waste of resources is reduced.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides an eccentric shaft for electric impact hammer, includes second pivot (6), its characterized in that: the improved structure is characterized in that a moving groove (12) is arranged at the top end of the second rotating shaft (6), a second sliding groove (11) is arranged at the top end of the left end of the moving groove (12), a sliding cover (7) is slidably connected to the inner wall of the second sliding groove (11), a push column (8) is fixedly connected to the right end of the sliding cover (7), a first sliding block (14) is fixedly connected to the bottom of the right end of the push column (8), a connecting plate (16) is rotatably connected to the front side and the rear side of the right end of the first sliding block (14), a second sliding block (15) is rotatably connected to the back side of the connecting plate (16), a fixed column (3) is fixedly connected to the back side of the second sliding block (15), a spring (13) is fixedly connected to the bottom of the left end of the push column (8), spline teeth (2) are arranged at the right side of the second rotating shaft (6), a groove (1) is arranged at the left end of the spline teeth (2), and a fixed groove (9) is arranged at the front end and the rear end of the groove (1).

2. The eccentric shaft for an electric impact hammer according to claim 1, wherein: the bottom end of the push column (8) is connected to the bottom end of the moving groove (12) in a sliding mode.

3. The eccentric shaft for an electric impact hammer according to claim 1, wherein: both ends right side all is provided with first spout (10) around second pivot (6), equal sliding connection in fixed column (3) outer wall in first spout (10) inner wall.

4. The eccentric shaft for an electric impact hammer according to claim 1, wherein: the shape of the second rotating shaft (6) is matched with that of the groove (1).

5. The eccentric shaft for an electric impact hammer according to claim 1, wherein: the fixing column (3) is matched with the fixing groove (9) in shape.

6. The eccentric shaft for an electric impact hammer according to claim 1, wherein: the left end of the second rotating shaft (6) is fixedly connected with a connecting shaft (5), and the left end of the connecting shaft (5) is fixedly connected with a first rotating shaft (4).

7. The eccentric shaft for an electric impact hammer according to claim 1, wherein: the shaft axis of the second rotating shaft (6) is arranged on the shaft axis of the first rotating shaft (4).

8. The eccentric shaft for an electric impact hammer according to claim 1, wherein: the left end of the spring (13) is fixedly connected to the bottom of the left end of the movable groove (12).