CN219075565U

CN219075565U - Damping device of electric hammer

Info

Publication number: CN219075565U
Application number: CN202222742206.4U
Authority: CN
Inventors: 王会远; 叶宁远
Original assignee: Yongkang Mingpu Industry And Trade Co ltd
Current assignee: Yongkang Mingpu Industry And Trade Co ltd
Priority date: 2022-10-18
Filing date: 2022-10-18
Publication date: 2023-05-26
Anticipated expiration: 2032-10-18

Abstract

The utility model discloses a damping device of an electric hammer, which comprises a hammer rod sleeve, a bearing, a hammer, a front end damping component, a rear end damping component, a shell and a cylinder, wherein the front end damping component is arranged between the hammer rod sleeve and the shell; the kinetic energy generated by the impact of the impact hammer on the impact hammer check ring is reduced through the rear end damping component, so that the damping is realized.

Description

Damping device of electric hammer

Technical Field

The utility model belongs to the field of electric tools, and relates to a damping device of an electric hammer.

Background

The electric hammer has the advantage of wide application range, but because the electric hammer is mainly used in the building field and the use environment has complexity, the problem of severe vibration of the electric hammer is easy to be caused in the use process, on one hand, the user cannot grasp the stable electric hammer, so that the working progress is delayed, and on the other hand, the problem of hand numbness is easy to occur in the use process of the user, so that the physical health of the user is influenced.

Disclosure of Invention

The utility model provides a damping device of an electric hammer, which aims to overcome the defects of the prior art.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: the utility model provides a damping device of electric hammer, includes hammer rod cover, bearing, ram, front end damper, rear end damper, casing and cylinder, and front end damper sets up between hammer rod cover and casing, and rear end damper sets up between hammer rod cover and ram, and the bearing sets up between casing and hammer rod cover, bearing and hammer rod cover gap connection, hammer rod cover and cylinder fixed connection, ram set up in the hammer rod cover.

Further, the front end shock-absorbing assembly comprises a first gasket, a shock absorber sleeve and a second gasket, the shock absorber is arranged between the first gasket and the shock absorber sleeve, and the shock absorber sleeve is arranged between the shock absorber and the second gasket.

Further, the rear end damper assembly comprises a hammer check ring, a damper pad and a lower gasket, and the damper pad is arranged between the hammer check ring and the lower gasket.

Further, a second gap is formed between the cylinder and the lower gasket, and the cylinder is separated from or contacted with the lower gasket.

Further, a first gap is formed between the shell and the first gasket, and the shell is separated from or contacted with the first gasket.

Further, the shock absorber sleeve is arranged in a hook-shaped structure, and the shock absorber is arranged in the hook-shaped structure.

Further, the hammer rod sleeve is provided with an impact surface, a first cavity and a second cavity.

Further, the impact hammer is provided with a protrusion, the size of the part provided with the protrusion is matched with that of the second cavity, and the size of the part not provided with the protrusion is matched with that of the first cavity.

Further, the hammer rod sleeve is also provided with a hook structure, the front end damping component is arranged on the outer side of the hook, and the rear end damping component is arranged on the inner side of the hook.

Further, still include pick borer, jump ring and gasket, the jump ring is equipped with two and sets up in casing and hammer stem cover respectively, and the gasket sets up between bearing and casing, and pick borer sets up in hammer stem cover.

In summary, the utility model has the following advantages:

1) According to the utility model, the impact hammer impacts the pick rod to generate kinetic energy, the kinetic energy is reduced by friction force generated between the bearing and the hammer rod sleeve, under the reaction force, the shell transmits the reaction force to the shock absorber, and the shock absorber compresses and absorbs energy, so that shock absorption is realized; the impact hammer impacts the kinetic energy generated by the impact hammer check ring, the shock pad compresses and absorbs part of energy, and friction exists between the impact hammer and the hammer rod sleeve so that the kinetic energy is reduced; when the first gap is reduced to 0, the air cylinder drives the hammer rod sleeve to move, and the bearing and the hammer rod sleeve generate friction force, so that part of kinetic energy is reduced to realize shock absorption, and further the problem that hands are numb in the use process of a user is facilitated and avoided.

2) The front end damping component and the rear end damping component are respectively arranged at the inner side and the outer side of the hammer rod sleeve, so that the two damping components work independently, and further, the influence of mutual interference in the damping process on the damping effect is avoided; the impact hammer is provided with a protrusion, the diameter of the impact hammer is increased and the diameter of the portion is matched with the size of the second cavity of the hammer rod sleeve through the protrusion, so that when the impact hammer moves to an impact surface, the impact hammer and the hammer rod sleeve can collide and drive the hammer rod sleeve to move, and then the front end damping component is driven to move and damping is achieved.

3) The shock absorber is arranged on the hook-shaped structure of the shock absorber sleeve, so that the friction force between the shock absorber and the hammer rod sleeve is reduced, the abrasion to the shock absorber is reduced, and the service life of the shock absorber is prolonged; in the damping process, the shock absorber is compressed and absorbs energy so as to realize damping, and after the damping is finished, the elastic body automatically restores to the original state and waits for the second damping, so that the repeated use is realized, and the use by a user is facilitated.

4) The second gap is arranged between the first gasket and the limiting block, the first gasket is contacted with the shell after being decelerated by the second gap, the impact force between the first gasket and the limiting block is reduced, the damping effect is improved, and the service life of the part is prolonged; when the impact hammer moves forwards, sliding friction exists between the bearing, the shell and the hammer rod sleeve respectively by the clamp spring and the gasket, so that kinetic energy generated by impact of the impact hammer is reduced, and further shock absorption is realized.

Drawings

Fig. 1 is an overall construction view of a damper device for an electric hammer according to the present utility model.

Fig. 2 is a block diagram of the front end damper assembly of the present utility model for damping vibrations.

FIG. 3 is a block diagram of the rear end shock assembly of the present utility model.

The marks in the figure are as follows: hammer rod sleeve 1, impact surface 11, bearing 2, ram 3, protrusion 31, first packing 41, shock absorber 42, shock absorber sleeve 43, second packing 44, ram retainer 51, shock pad 52, lower packing 53, casing 6, stopper 61, cylinder 7, jump ring 8, gasket 9, pick 91.

Detailed Description

Other advantages and effects of the present utility model will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present utility model with reference to specific examples. The utility model may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present utility model. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict.

It should be noted that the illustrations provided in the following embodiments merely illustrate the basic concept of the present utility model by way of illustration, and only the components related to the present utility model are shown in the drawings and are not drawn according to the number, shape and size of the components in actual implementation, and the form, number and proportion of the components in actual implementation may be arbitrarily changed, and the layout of the components may be more complicated.

All directional indications (such as up, down, left, right, front, rear, lateral, longitudinal … …) in embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular gesture, and if the particular gesture changes, the directional indication changes accordingly.

For reasons of installation errors, the parallel relationship referred to in the embodiments of the present utility model may be an approximately parallel relationship, and the perpendicular relationship may be an approximately perpendicular relationship.

Embodiment one:

as shown in fig. 1-3, a damping device of an electric hammer comprises a hammer rod sleeve 1, a bearing 2, a hammer ram 3, a front end damping component, a rear end damping component, a shell 6 and a cylinder 7, wherein the front end damping component is arranged between the hammer rod sleeve 1 and the shell 6, the rear end damping component is arranged between the hammer rod sleeve 1 and the hammer ram 3, the bearing 2 is arranged between the shell 6 and the hammer rod sleeve 1, the bearing 2 is in clearance connection with the hammer rod sleeve 1, the hammer rod sleeve 1 is fixedly connected with the cylinder 7, and the hammer ram 3 is linked with the hammer rod sleeve 1.

In this embodiment, the hammer rod sleeve 1 is provided with an impact surface 11, and according to the visual angle of fig. 2, the internal cavity of the hammer rod sleeve 1 is divided into a first cavity and a second cavity by taking the impact surface 11 as a boundary, and the height of the first cavity is smaller than that of the second cavity; the tail end of hammer rod cover 1 sets up to the crotch structure, and front end damper sets up in the crotch outside, and rear end damper sets up in the crotch is inboard to make two damper independently work, thereby avoid the shock attenuation in-process to interfere with each other and thereby influence the shock attenuation effect.

In this embodiment, the impact hammer 3 is provided with protrusions 31, the protrusions 31 are symmetrically distributed at the upper and lower ends of the impact hammer, according to the visual angle of fig. 2, the protrusions 31 are arranged to increase the diameter of the impact hammer 3, the diameter of the portion is matched with the size of the second cavity of the hammer rod sleeve 1, and the size of the rest portion of the impact hammer 3 is matched with the size of the first cavity of the hammer rod sleeve 1, so that when the impact hammer 3 moves to the impact surface 11, the impact hammer 3 collides with the hammer rod sleeve 1 and drives the hammer rod sleeve 1 to move, and then drives the front end damping component to move and realize damping.

In this embodiment, the front end shock absorbing assembly includes a first washer 41, a shock absorber 42, a shock absorber cover 43 and a second washer 44, the shock absorber 42 is disposed between the first washer 41 and the shock absorber cover 43, the shock absorber cover 43 is disposed between the shock absorber 42 and the second washer 44, the shock absorber cover 43 is configured as a hook structure, the shock absorber 42 is disposed in the hook structure and the shock absorber 42 is made of an elastic material, the shock absorber cover 43 reduces the friction between the shock absorber 42 and the hammer rod cover 1, thereby reducing the abrasion to the shock absorber 42 and prolonging the service life of the shock absorber 42; the material of the shock absorber 42 is set to be elastic material, and in the shock absorption process, the elastic material compresses and absorbs energy to realize shock absorption, and after the shock absorption is finished, the elastic material automatically restores to the original state and waits for the second shock absorption, so that the repeated use is realized, and the use by a user is facilitated.

In this embodiment, the rear end shock-absorbing assembly includes a ram retainer ring 51, a shock-absorbing pad 52 and a lower washer 53, the shock-absorbing pad 52 is disposed between the ram retainer ring 51 and the lower washer 53, the shock-absorbing pad 52 is made of an elastic material, and when the ram 3 moves towards the rear end, the ram retainer ring 51 is attached to the opposite surface of the protrusion 31, so that the ram 3 collides with the ram retainer ring 51 and achieves kinetic energy transfer when moving towards the rear end, at this time, the ram retainer ring 51 impacts the shock-absorbing pad 52, the shock-absorbing pad 52 moves and drives the lower washer 53 to move, and the shock-absorbing pad compresses and absorbs part of energy, thereby achieving shock absorption.

In this embodiment, the cylinder 7 is disposed on the hammer rod sleeve 1 and has a first gap with the lower washer 53, when the lower washer 53 moves toward the rear end, the first gap gradually decreases, in this process, due to inertia, the cylinder 7 drives the hammer rod sleeve 1 to move, and meanwhile, the bearing 5 and the hammer rod sleeve 1 are in clearance fit and generate friction force, so as to reduce part of kinetic energy, and further realize shock absorption.

In this embodiment, the casing 6 is further provided with a limiting block 61, the first washer 41 is disposed on the limiting block 61 and is provided with a second gap with the limiting block 61, when the front end shock-absorbing assembly moves forward, the second gap between the first washer 41 and the casing 6 is reduced to 0, the first washer 41 is in contact with the casing 6 after being decelerated by the second gap, impact force between the first washer and the second washer is reduced, and the shock-absorbing effect is improved while the service life of the component is prolonged.

In this embodiment, still include jump ring 8, gasket 9 and pick borer 91, jump ring 8 are equipped with two and set up respectively in casing 6 and hammer rod cover 1, and gasket 9 sets up between bearing 2 and casing 6, and pick borer 91 sets up in hammer rod cover 1, and ram 3 striking pick borer 91 produces kinetic energy, and at this moment, jump ring 8 and gasket 9 make bearing 2 respectively with casing 6, have sliding friction between the hammer rod cover 1 to reduce the kinetic energy that ram 3 striking produced, and then realize the shock attenuation.

In the implementation process of the embodiment, when the protrusion 31 of the impact hammer 3 moves to the impact surface 11, that is, the impact hammer 3 collides with the pick rod 91 and generates kinetic energy, the hammer rod sleeve 1 moves and drives the front end damping component to move forward, at this time, the second gap between the first washer 41 in the front end component and the shell 6 is reduced to 0, and the first washer 41 and the shell 6 are changed from a separation state to a fitting state; in the process, as the bearing 2 and the hammer rod sleeve 1 are in clearance fit, friction force is generated between the bearing 2 and the hammer rod sleeve 1, and the friction force reduces the overall kinetic energy formed by the impact hammer 3, the hammer rod sleeve 1 and the front end damping component; due to inertia, under the reaction force, the shell 6 transmits the reaction force to the first gasket 41, the first gasket 41 transmits to the shock absorber 42, and the shock absorber 42 is compressed and absorbs energy, so that shock absorption is realized, and further, the use by a user is facilitated, and the problem of hand numbness in the use process of the user is avoided.

In the implementation process of the embodiment, when the impact hammer 3 moves to the rear end to collide with the impact hammer retainer ring 51 of the rear end shock absorption component, the impact hammer retainer ring 51 collides with the shock absorption pad 52 at the same time of being impacted, the shock absorption pad 52 is compressed and absorbs part of energy, the shock absorption pad 52 moves to the rear end and moves the lower gasket 53, at the moment, the first gap between the lower gasket 53 and the cylinder 7 is gradually reduced, and the friction force exists between the impact hammer 3 and the hammer rod sleeve 1, so that the integral kinetic energy formed by the impact hammer 3, the impact hammer retainer ring 51, the shock absorption pad 52 and the lower gasket 53 is reduced; when the first gap is reduced to 0, the lower gasket 53 contacts with the air cylinder 7 and drives the air cylinder 7 to move towards the rear end, the air cylinder 7 drives the hammer rod sleeve 1 to move due to inertia, and meanwhile, the bearing 2 and the hammer rod sleeve 1 are in clearance fit and generate friction force, so that part of kinetic energy is reduced, and further, shock absorption is realized; the rear end damping process reduces the transmission of the kinetic energy of the impact hammer to the shell 6 through four measures, namely the friction force between the impact hammer 3 and the hammer rod sleeve 1, the absorption of energy by the elastomer, the reduction of the kinetic energy through clearance reduction and the friction force between the bearing 2 and the hammer rod sleeve 1.

It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. 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.

Claims

1. The utility model provides a damping device of electric hammer which characterized in that: including hammer rod cover, bearing, ram, front end damper, rear end damper, casing and cylinder, front end damper sets up between hammer rod cover and casing, and rear end damper sets up between hammer rod cover and ram, and the bearing sets up between casing and hammer rod cover, and bearing and hammer rod cover gap connection, hammer rod cover and cylinder fixed connection, ram set up in the hammer rod cover.

2. The vibration damping device of an electric hammer as set forth in claim 1, wherein: the front end shock-absorbing assembly comprises a first gasket, a shock absorber sleeve and a second gasket, the shock absorber is arranged between the first gasket and the shock absorber sleeve, and the shock absorber sleeve is arranged between the shock absorber and the second gasket.

3. The vibration damping device of an electric hammer as set forth in claim 1, wherein: the rear end shock-absorbing assembly comprises a impact hammer check ring, a shock-absorbing pad and a lower gasket, and the shock-absorbing pad is arranged between the impact hammer check ring and the lower gasket.

4. A damper device for an electric hammer as set forth in claim 3, wherein: the cylinder and the lower gasket are provided with a first gap, and the cylinder is separated from or contacted with the lower gasket.

5. The vibration damping device of an electric hammer as set forth in claim 2, wherein: the shell and the first gasket are provided with a second gap, and the shell is separated from or contacted with the first gasket.

6. The vibration damping device of an electric hammer as set forth in claim 2, wherein: the shock absorber sleeve is arranged in a hook-shaped structure, and the shock absorber is arranged in the hook-shaped structure.

7. The vibration damping device of an electric hammer as set forth in claim 1, wherein: the hammer rod sleeve is provided with an impact surface, a first cavity and a second cavity.

8. The vibration damping device of an electric hammer as set forth in claim 1, wherein: the impact hammer is provided with a protrusion, the size of the part provided with the protrusion is matched with that of the second cavity, and the size of the part not provided with the protrusion is matched with that of the first cavity.

9. The vibration damping device of an electric hammer as set forth in claim 1, wherein: the hammer rod sleeve is also provided with a hook structure, the front end damping component is arranged on the outer side of the hook, and the rear end damping component is arranged on the inner side of the hook.

10. The vibration damping device of an electric hammer as set forth in claim 1, wherein: still include pick borer, jump ring and gasket, the jump ring is equipped with two and sets up in casing and hammer stem cover respectively, and the gasket sets up between bearing and casing, and pick borer sets up in hammer stem cover.