CN212311928U

CN212311928U - Light hammer shock-absorbing structure

Info

Publication number: CN212311928U
Application number: CN201922200162.0U
Authority: CN
Inventors: 陈华政; 李坚忠
Original assignee: Zhejiang Xinyuan Electric Appliance Manufacture Co ltd
Current assignee: Zhejiang Xinyuan Electric Appliance Manufacture Co ltd
Priority date: 2019-12-10
Filing date: 2019-12-10
Publication date: 2021-01-08
Anticipated expiration: 2029-12-10

Abstract

The utility model discloses a light hammer damping structure, which comprises a first connecting piece, a damping cover, a damping piston, a spring, a damping piston seat and a damping seat; the vibration damping cover is connected with the vibration damping piston through a first connecting piece, the vibration damping piston is sleeved in the vibration damping piston seat, and the vibration damping piston can move on the vibration damping piston seat; the spring is arranged between the vibration damping piston and the vibration damping seat, and the vibration damping piston is sleeved on the spring; the utility model provides a direct absorption strikes reverse motion energy, noise reduction, increases the light hammer shock-absorbing structure of drilling efficiency.

Description

Light hammer shock-absorbing structure

Technical Field

The utility model relates to a machine-building field, more specifically the utility model discloses, it relates to light hammer shock-absorbing structure.

Background

The electric hammer is widely applied to the fields of buildings, construction, home decoration and the like, and the hand and joint parts of a user can be tired and even swollen for a long time due to large vibration amplitude, high frequency and the like in the use process, so that occupational diseases can be caused. It is very necessary to provide a damping device on the electric hammer.

The electric hammer vibration reduction technology in the current market comprises an AVT technology of pasture fields and a Hitachi UVP technology, and is a device for directly absorbing impact reverse motion energy. Other electric hammers are basically simple devices that only add a vibration damping handle to indirectly absorb impact energy.

When the electric hammer works, when the piston advances towards the drill bit, the cylinder transmits the counterforce to the hand direction of a human body; when the piston moves backwards, the impact force of the piston is also transmitted to the hand of the human body; if the energy of the impact reverse movement is not directly absorbed, the human hand needs to absorb the energy; if the patient stays long, the hand will be tired.

In addition, the working efficiency of the electric hammer needs to be continuously improved, and in order to reduce environmental damage, the improvement method is diversified. However, the functions of the electric hammer in the society in the aspects of improving the drilling rate, reducing vibration and noise are fundamentally contradictory, and most of the three increase the drilling rate while neglecting others.

SUMMERY OF THE UTILITY MODEL

The utility model overcomes prior art's is not enough, provides direct absorption and strikes reverse motion energy, noise reduction, increases the light hammer shock-absorbing structure of drilling efficiency.

The technical scheme of the utility model as follows:

the light hammer shock absorption structure comprises a first connecting piece, a shock absorption cover, a shock absorption piston, a spring, a shock absorption piston seat and a shock absorption seat; the vibration damping cover is connected with the vibration damping piston through a first connecting piece, the vibration damping piston is sleeved in the vibration damping piston seat, and the vibration damping piston can move on the vibration damping piston seat; the spring is arranged between the vibration reduction piston and the vibration reduction seat, and the vibration reduction piston is sleeved on the spring.

Furthermore, the vibration damping piston comprises a limiting ring, a connecting block and a vibration damping piston body, the vibration damping piston body is in a circular ring column shape, one end of the vibration damping piston body is fixed with the connecting block, the other end of the vibration damping piston body is fixed with the limiting ring, and a connecting hole is formed in the middle of the connecting block; wherein, the external diameter of spacing ring is greater than the external diameter of damping piston body.

Furthermore, the limiting ring, the connecting block and the vibration damping piston body are integrated; the first connecting piece adopts a bolt, and threads are arranged in the connecting hole.

Furthermore, the damping cover is integrally circular, a through hole is formed in the middle of the damping cover, the diameter of one side, close to the damping piston, of the through hole is the smallest, the diameter of one side, far away from the damping piston, of the through hole is the largest, and the first connecting piece is placed in the through hole and flush with the plane on one side of the damping cover.

Furthermore, the whole spring is in a ring shape, the spring is in an up-and-down symmetrical structure, and an arc-shaped connecting rod is arranged in the middle of the spring.

Furthermore, the damping piston seat comprises an annular limiting plate, a damping piston seat bottom plate and a damping piston seat body, and fixing structures are arranged on two sides of the damping piston seat bottom plate and are integrally U-shaped; the inner diameter of the annular limiting plate is between the outer diameter of the damping piston body and the outer diameter of the limiting ring; the inner diameter of the damping piston seat body is the same as the outer diameter of the limiting ring; the shape of the vibration damping seat is the same as that of the vibration damping piston seat base plate, the vibration damping seat and the vibration damping piston seat base plate are fixed through a second connecting piece arranged on the fixing structure, and the second connecting piece is a bolt.

Further, still include the support, fix through the bolt that sets up on the fixed knot structure between damping seat and the support.

Further, the fixed structure is provided with threads.

Furthermore, the vibration reduction device also comprises an air cylinder and a swing rod bearing, wherein one side of the swing rod bearing is connected with the air cylinder, and the other side of the swing rod bearing is contacted with the vibration reduction cover.

Furthermore, the damping seat is made of energy-absorbing materials.

The utility model discloses compare in traditional angle grinder protecgulum assembly methods, have following advantage:

the utility model discloses the damping lid is whole circular, sets up the through hole in the middle of it, and the diameter that the through hole is close to one side of damping piston is minimum, and the diameter of keeping away from one side of damping piston is the biggest, and first connecting piece is placed in the through hole and is flushed with damping lid one side plane. The damping piston comprises a limiting ring, a connecting block and a damping piston body, the damping piston body is in a circular ring column shape, one end of the damping piston body is fixed with the connecting block, the other end of the damping piston body is fixed with the limiting ring, and a connecting hole is formed in the middle of the connecting block. The outer diameter of the limiting ring is larger than that of the vibration damping piston body. The first connecting piece adopts a bolt, and threads are arranged in the connecting hole. Thereby realizing the firm connection of the damping cover and the damping piston.

The damping piston is efficiently matched with the damping piston seat, and the operation of the damping piston can compress and release the space between the damping piston and the damping piston seat to form a certain energy-absorbing and damping effect.

The utility model discloses reach a direct absorption and strike reverse motion energy, noise reduction, increase the light hammer shock-absorbing structure of drilling efficiency, and overall structure is simple, novel in design reasonable, direct steady damping, convenient assembling, easy dismantlement, the maintenance in the later stage of being convenient for.

Drawings

FIG. 1 is the general structure diagram of the light hammer damping structure of the present invention;

fig. 2 is a partially enlarged view of fig. 1 according to the present invention;

FIG. 3 is an exploded view of the shock absorbing structure of the light hammer of the present invention;

FIG. 4 is a structural diagram of the damping cap of the present invention;

FIG. 5 is a structural diagram of the spring of the present invention;

FIG. 6 is a structural diagram of the damping piston of the present invention;

FIG. 7 is a view showing the structure of the damping piston seat of the present invention;

FIG. 8 is a structural diagram of the damping seat of the present invention;

fig. 9 is a structural view of a first connecting member of the present invention;

fig. 10 is a structural view of a second connecting member according to the present invention.

Reference numerals: the damping piston comprises a piston 1, a cylinder 2, a first connecting piece 3, a damping cover 4, a damping piston 5, a limiting ring 51, a connecting block 52, a damping piston body 53, a spring 6, a damping piston seat 7, an annular limiting plate 71, a damping piston seat bottom plate 72, a damping piston seat body 73, a damping seat 8, a support 9, a second connecting piece 10 and a swing rod bearing 11.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the following detailed description. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

As shown in fig. 1 to 7, the light hammer damping structure includes a first connecting member 3, a damping cover 4, a damping piston 5, a spring 6, a damping piston seat 7, and a damping seat 8. The damping cap 4 and the damping piston 5 are fixedly connected by the first connecting piece 3. The damping piston 5 is sleeved in the damping piston seat 7, and the damping piston 5 can move on the damping piston seat 7; the spring 6 is arranged between the damping piston 5 and the damping seat 8, the damping piston 5 is sleeved on the spring 6, and the damping is realized by utilizing the expansion and contraction of the spring 6 to absorb vibration energy.

Specifically, the damping cover 4 is integrally circular, a through hole is formed in the middle of the damping cover, the diameter of one side, close to the damping piston 5, of the through hole is the smallest, the diameter of one side, far away from the damping piston 5, of the through hole is the largest, and the first connecting piece 3 is placed in the through hole and flush with the plane on one side of the damping cover 4. Damping piston 5 includes spacing ring 51, connecting block 52 and damping piston body 53, and damping piston body 53 is the ring column, and damping piston body 53's one end is fixed with connecting block 52, and the other end is fixed with spacing ring 51, and the centre of connecting block 52 sets up the connecting hole. Wherein, the spacing ring 51, the connecting block 52 and the damping piston body 53 are integrated; the outer diameter of the retainer ring 51 is larger than the outer diameter of the damping piston body 53. The first connecting piece 3 adopts a bolt, and threads are arranged in the connecting hole. In this way, a stable connection of the damping cap 4 to the damping piston 1 is achieved.

The damping piston seat 7 comprises an annular limiting plate 71, a damping piston seat bottom plate 72 and a damping piston seat body 73, and fixing structures are arranged on two sides of the damping piston seat bottom plate 72 and are integrally U-shaped; the inner diameter of the annular limit plate 71 is between the outer diameter of the damping piston body 53 and the outer diameter of the limit ring 51; the damping piston seat body 73 has an inner diameter identical to the outer diameter of the retainer ring 51. The efficient matching of the damping piston 5 and the damping piston seat 7 is realized, and the operation of the damping piston 5 can compress and release the space between the damping piston 5 and the damping piston 1 seat to form a certain energy-absorbing and damping effect.

The spring 6 is arranged between the damping piston 5 and the damping seat 8, and further provides an energy-absorbing and damping structure and effect. Specifically, the whole spring 6 is in a ring shape, the spring 6 is in an up-and-down symmetrical structure, and an arc-shaped connecting rod is arranged in the middle of the spring 6. Damping piston 5 cup joints spring 6, has formed the operating space of spring 6, and formation restraint that can be fine reduces to make spring 6 take place deformation for a long time, has prolonged whole life.

The shape of the damping seat 8 is the same as that of the damping piston seat base plate 72, the damping seat 8 and the damping piston seat base plate 72 are fixed through a second connecting piece 10 arranged on the fixing structure, and the second connecting piece 10 is a bolt. The damping seat 8 is made of energy-absorbing materials such as rubber, porous materials, foam metal and the like. The damping seat 8, the spring 6, the damping piston 5 and the damping piston 1 are arranged in the whole space, so that a damping effect is greatly formed, and the whole energy absorption effect is greatly improved. Overall structure's high energy-absorbing effect compromises easy dismantlement to the maintenance in later stage.

The light hammer shock absorption structure further comprises a support 9, and the vibration absorption seat 8 and the support 9 are fixed through bolts arranged on the fixing structure. The fixing structure is provided with threads to strengthen the fixing effect. The light hammer shock absorption structure further comprises a cylinder 2 and a swing rod bearing 11, one side of the swing rod bearing 11 is connected with the cylinder 2, and the other side of the swing rod bearing 11 is in contact with the vibration reduction cover 4.

In summary, when the piston 1 in the cylinder 2 moves forward toward the bit of the electric hammer, the cylinder 2 transmits a reaction force to the damping cover 43, the reaction force is mainly resisted and reduced by the spring 6 and the damping seat 8, so as to achieve a good damping effect, and the damping seat 8, the damping piston 1 and the damping piston seat 7 perform auxiliary damping. Meanwhile, because of the resistance of the spring 6, the force generated by the air pressure in the cylinder 2 has to be increased towards the piston 1, the increased air pressure increases the forward movement speed of the piston 1, and the movement inertia and the single hammering force are increased, so that the drilling efficiency of the electric hammer is improved. In the same way, because of the resistance of the spring 6, the limit movement speed of the cylinder 2 is reduced, and the buffer effect is achieved, so that the noise generated during the operation of the electric hammer is reduced.

When piston 1 is backward, when arriving soon, the cylinder 2 is wholly moved towards the drill bit direction, and the impact force of piston 1 can effectively resist and reduce vibration under the space action of spring 6, damping seat 8, damping piston 1 and damping piston seat 7, so as to achieve the damping effect. Meanwhile, the limit movement speed of the piston 1 is reduced and buffered due to the resisting force of the spring 6, so that the noise generated during the operation of the electric hammer is reduced.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the concept of the present invention, and these improvements and decorations should also be considered as the protection scope of the present invention.

Claims

1. The light hammer shock absorption structure is characterized by comprising a first connecting piece, a shock absorption cover, a shock absorption piston, a spring, a shock absorption piston seat and a shock absorption seat; the vibration damping cover is connected with the vibration damping piston through a first connecting piece, the vibration damping piston is sleeved in the vibration damping piston seat, and the vibration damping piston can move on the vibration damping piston seat; the spring is arranged between the vibration reduction piston and the vibration reduction seat, and the vibration reduction piston is sleeved on the spring.

2. The structure of claim 1, wherein: the damping piston comprises a limiting ring, a connecting block and a damping piston body, the damping piston body is in a circular-ring columnar shape, one end of the damping piston body is fixed with the connecting block, the other end of the damping piston body is fixed with the limiting ring, and a connecting hole is formed in the middle of the connecting block; wherein, the external diameter of spacing ring is greater than the external diameter of damping piston body.

3. The structure of claim 2, wherein: the limiting ring, the connecting block and the vibration damping piston body are integrated; the first connecting piece adopts a bolt, and threads are arranged in the connecting hole.

4. The structure of claim 1, wherein: the damping cover is integrally circular, a through hole is formed in the middle of the damping cover, the diameter of one side, close to the damping piston, of the through hole is the smallest, the diameter of one side, far away from the damping piston, of the through hole is the largest, and the first connecting piece is placed in the through hole and flush with the plane on one side of the damping cover.

5. The structure of claim 1, wherein: the whole spring is in a ring shape, the spring is in an up-and-down symmetrical structure, and an arc-shaped connecting rod is arranged in the middle of the spring.

6. The structure of claim 2, wherein: the damping piston seat comprises an annular limiting plate, a damping piston seat bottom plate and a damping piston seat body, and fixing structures are arranged on two sides of the damping piston seat bottom plate and are integrally U-shaped; the inner diameter of the annular limiting plate is between the outer diameter of the damping piston body and the outer diameter of the limiting ring; the inner diameter of the damping piston seat body is the same as the outer diameter of the limiting ring; the shape of the vibration damping seat is the same as that of the vibration damping piston seat base plate, the vibration damping seat and the vibration damping piston seat base plate are fixed through a second connecting piece arranged on the fixing structure, and the second connecting piece is a bolt.

7. The structure of claim 6, wherein: the vibration reduction seat is fixed with the support through a bolt arranged on the fixing structure.

8. The structure of claim 7, wherein: the fixed structure is provided with threads.

9. The structure of claim 1, wherein: the vibration reduction device further comprises an air cylinder and a swing rod bearing, wherein one side of the swing rod bearing is connected with the air cylinder, and the other side of the swing rod bearing is in contact with the vibration reduction cover.

10. The structure of claim 1, wherein: the vibration damping seat is made of energy-absorbing materials.