CN212044549U

CN212044549U - Shock absorption structure of electric hammer

Info

Publication number: CN212044549U
Application number: CN201922198573.0U
Authority: CN
Inventors: 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: 2020-12-01
Anticipated expiration: 2029-12-10

Abstract

The utility model discloses an electric hammer damping structure, which comprises a damping cover, a spring, a damping seat and a base; the damping seat is sleeved on the base, and the spring is arranged between the damping cover and the damping seat; the utility model provides an electric hammer shock-absorbing structure of direct absorption impact reverse motion energy, noise reduction, increase drilling efficiency.

Description

Shock absorption structure of electric hammer

Technical Field

The utility model relates to a machine-building field, more specifically the utility model discloses, it relates to electric 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 shock absorption 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 impact reverse motion energy, noise reduction, increases the electric hammer shock-absorbing structure of drilling efficiency.

The technical scheme of the utility model as follows:

the electric hammer shock absorption structure comprises a shock absorption cover, a spring, a shock absorption seat and a base; the damping seat is sleeved on the base, and the spring is arranged between the damping cover and the damping seat.

Furthermore, the shapes of the vibration damping cover, the spring and the vibration damping seat are adaptive.

Furthermore, the whole damping cover is crescent, and it includes planking, inner panel and connecting block, and the shape of planking and inner panel is the same, and the height of inner panel is greater than the height of planking.

Furthermore, a space for placing the spring is arranged between the outer plate and the inner plate, and the size of the space is matched with the thickness of the spring.

Furthermore, the overlooking graph of the spring is crescent, the spring is of an up-and-down symmetrical structure, a connecting rod is arranged in the middle of the spring, and the connecting rod is obliquely arranged to achieve a damping space.

Further, the base includes bottom plate and boss, and bottom plate and boss are whole all to be the crescent, and the bottom plate size is greater than the size of boss, and the damping seat is cup jointed with the space of boss size to the bottom plate.

Furthermore, the device also comprises a support, a through hole is arranged in the middle of the base, and the base and the support are fixed through a bolt arranged on the through hole.

Furthermore, the through hole is provided with a thread.

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 electric hammer damping mode, have following advantage:

the utility model discloses a damping lid, spring, damping seat three's shape special design, damping lid are whole to be crescent, and it includes planking, inner panel and connecting block, and the height that highly is greater than the planking of inner panel forms the space of placing of spring between inner panel and the planking, and the size in this space suits with the thickness of spring, and general this space slightly is greater than the thickness of spring. The placing space is not only used as the placing space of the spring, but also forms the moving track of the spring.

The overlooking graph of the spring is also crescent, the spring is of an up-down symmetrical structure, a connecting rod is arranged in the middle of the spring, and the connecting rod is obliquely arranged to realize a damping space. When the damping cover is used, one end of the spring is embedded between the inner plate and the outer plate of the damping cover, and the damping cover is integrally crescent. The spring can be better limited than the traditional round design, the deformation rate of the spring is greatly reduced due to long-time use, and the whole service life is prolonged.

The utility model discloses reach an electric hammer shock-absorbing structure that directly absorbs impact reverse motion energy, noise reduction, increase 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 shock-absorbing structure of the electric hammer 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 electric 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 seat of the present invention;

fig. 7 is a structural diagram of the base of the present invention.

Reference numerals: the damping device comprises a piston 1, a cylinder 2, a damping cover 3, an outer plate 31, an inner plate 32, a spring 4, a connecting rod 41, a base 5, a bottom plate 51, a boss 52, a through hole 53, a bolt 6, a damping seat 7, a bracket 8 and a swing rod bearing 9.

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 shock absorbing structure of the electric hammer comprises a shock absorbing cover 3, a spring 4, a shock absorbing seat 7 and a base 5. The damping seat is sleeved on the base 5, and the spring 4 is arranged between the damping cover 3 and the damping seat 7. Vibration damping is realized by utilizing the expansion and contraction of the spring 4, and vibration energy is absorbed.

Specifically, the shapes of the damping cover 3, the spring 4 and the damping seat 7 are adapted. The damping cover 3 is crescent, and comprises an outer plate 31, an inner plate 32 and a connecting block, wherein the outer plate 31 and the inner plate 32 are same in shape, the height of the inner plate 32 is greater than that of the outer plate 31, a placing space for the spring 4 is formed between the inner plate 32 and the outer plate 31, the size of the space is matched with the thickness of the spring 4, and the space is generally slightly greater than that of the spring 4. The placing space not only serves as a placing space for the spring 4, but also forms a moving track of the spring 4. Spring 4 overlook the figure and also be crescent, and adopt the longitudinal symmetry formula structure, set up connecting rod 41 in the middle of spring 4, connecting rod 41 cuts to one side and sets up the realization shock attenuation space. When in use, one end of the spring 4 is embedded between the inner plate 32 and the outer plate 31 of the damping cover, and the whole damping cover adopts a crescent shape. The function of the spring 4 can be better limited than the traditional circular design, and the deformation rate of the spring is greatly reduced due to long-time use, so that the whole service life is prolonged.

The height of the inner plate 32 is greater than that of the outer plate 31, so that the operation of the spring 4 can be better limited, and a more favorable operation track can be formed. Preferably, a chamfer is provided on the side of the inner plate 32 adjacent to the outer plate 31 to facilitate the attachment and detachment of the spring 4. A chamfer can also be added on the side of the outer plate 31 close to the inner plate 32 to facilitate the assembly and disassembly of the spring 4.

The base 5 comprises a base plate 51 and a boss 52, the base plate 51 and the boss 52 are both crescent, the size of the base plate 51 is larger than that of the boss 52, and the damping seat 7 is sleeved in a gap between the base plate 51 and the boss 52. Specifically, the spring 4 can be sleeved on the boss 52, and the damping seat 7 is arranged between the spring 4 and the base 5, so that the energy absorption effect of the damping seat 7 is realized, and the overall energy absorption effect is greatly improved by the double damping effects of the damping seat 7 and the spring 4. Or the damping seat 7 covers the inner side of one end of the spring 4, and the damping seat 7, the base 5 and the spring 4 are tightly matched, so that the high energy absorption effect of one side, close to the base 5, of the spring 4 is realized, the disassembly is easy, and the later maintenance is convenient. Preferably, the damping seat 7 is made of an energy absorbing material, such as rubber, porous material, foamed metal, etc.

The shock absorption structure of the electric hammer further comprises a support 8, a through hole 53 is formed in the middle of the base 5, and the base 5 and the support 8 are fixed through a bolt 6 arranged on the through hole 53. The through hole 53 may be provided with a thread to enhance the fixing effect. The electric hammer shock absorption structure further comprises an air cylinder 2 and a swing rod bearing 9, one side of the swing rod bearing 9 is connected with the air cylinder 2, and the other side of the swing rod bearing is in contact with the vibration reduction cover 3.

In conclusion, when the piston 1 in the cylinder 2 moves forward towards the drill bit of the electric hammer, the cylinder 2 can transmit a reaction force to the damping cover 3, and the reaction force can effectively resist and reduce vibration under the action of the spring 4 and the damping seat 7, so that a good damping effect is achieved; meanwhile, because of the resistance of the spring 4, 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 4, the limit movement speed of the cylinder 2 is reduced, and the buffering effect is achieved, so that the noise generated during the operation of the electric hammer is reduced.

When the piston 1 moves backwards and arrives quickly, the cylinder 2 moves towards the direction of the drill bit, and the impact force of the piston 1 can effectively resist and reduce vibration under the action of the spring 4 and the vibration reduction seat 7, so that the vibration reduction effect is achieved. Meanwhile, the limit movement speed of the piston 1 is reduced and buffered due to the resisting force of the spring 4, 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 electric hammer shock absorption structure is characterized by comprising a shock absorption cover, a spring, a shock absorption seat and a base; the damping seat is sleeved on the base, and the spring is arranged between the damping cover and the damping seat; 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.

2. The electric hammer shock-absorbing structure according to claim 1, wherein: the shapes of the vibration damping cover, the spring and the vibration damping seat are adaptive.

3. The electric hammer shock-absorbing structure according to claim 2, wherein: the damping cover is integrally crescent and comprises an outer plate, an inner plate and a connecting block, the outer plate and the inner plate are identical in shape, and the height of the inner plate is greater than that of the outer plate.

4. The electric hammer shock-absorbing structure according to claim 3, wherein: a space for placing the spring is arranged between the outer plate and the inner plate, and the size of the space is matched with the thickness of the spring.

5. The electric hammer shock-absorbing structure according to claim 2, wherein: the overlooking graph of the spring is crescent, the spring is of an up-and-down symmetrical structure, a connecting rod is arranged in the middle of the spring, and the connecting rod is obliquely arranged to realize a damping space.

6. The electric hammer shock-absorbing structure according to claim 2, wherein: the base includes bottom plate and boss, and bottom plate and boss are whole all to be the crescent, and the bottom plate size is greater than the size of boss, and the damping seat is cup jointed with the space of boss size to the bottom plate.

7. The electric hammer shock-absorbing structure according to claim 6, wherein: the support is further included, a through hole is formed in the middle of the base, and the base and the support are fixed through a bolt arranged on the through hole.

8. The electric hammer shock-absorbing structure according to claim 7, wherein: the through hole is provided with a thread.

9. The electric hammer shock-absorbing structure according to claim 1, wherein: the vibration damping seat is made of energy-absorbing materials.