CN219426716U - Hammering system of electric hammer and electric hammer - Google Patents
Hammering system of electric hammer and electric hammer Download PDFInfo
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- CN219426716U CN219426716U CN202320164182.0U CN202320164182U CN219426716U CN 219426716 U CN219426716 U CN 219426716U CN 202320164182 U CN202320164182 U CN 202320164182U CN 219426716 U CN219426716 U CN 219426716U
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- 230000033001 locomotion Effects 0.000 claims abstract description 17
- 230000005540 biological transmission Effects 0.000 claims abstract description 14
- 238000003780 insertion Methods 0.000 claims abstract description 4
- 230000037431 insertion Effects 0.000 claims abstract description 4
- 230000006378 damage Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 6
- 230000007423 decrease Effects 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
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- Percussive Tools And Related Accessories (AREA)
Abstract
The application discloses hammering system and electric hammer of electric hammer, hammering system moves under the drive of motor, includes: a cylinder sleeve having a front end and a rear end disposed opposite each other; the impact assembly is embedded in the cylinder sleeve and comprises a striker rod and a striker which are sequentially arranged, wherein the striker rod is arranged close to the front end, and one end of the striker rod extends out of the front end; the piston assembly is embedded in the cylinder sleeve and is positioned at the rear side of the ram, and comprises a first piston sleeve, a second piston sleeve and a piston which are sequentially arranged, and the piston is in sliding insertion connection with the second piston sleeve; the transmission member connects the piston and the motor to convert the rotational motion of the motor into linear reciprocating motion of the piston. The hammering system can effectively reduce the impact force of the driving component when the hammer compresses air, so that the damage of the rebound force of the electric hammer to operators is reduced.
Description
Technical Field
The utility model relates to a hammering system of an electric hammer and the electric hammer, and belongs to the technical field of electric tools.
Background
In engineering construction, various electric tools are often used, and an electric hammer is an electric rotary hammer drill with a safety clutch and an air hammering mechanism. The electric hammer uses the principle of piston movement, and compressed gas impacts the drill bit, so that the electric hammer can open holes in hard materials such as concrete, floor slabs, bricks, stones and the like without needing great force of hands.
The conventional hammering system of the electric hammer is generally composed of a piston assembly, an impact component and a transmission component, wherein the impact component comprises a striker rod and a hammer, one end of the striker rod is connected with a working head of the electric hammer, the hammer is connected with the piston assembly, and the transmission component is used for converting the rotary motion of a motor of the electric hammer into the linear reciprocating motion of the piston assembly so as to generate a speed-increasing effect on the piston assembly and drive the hammer to generate impact. The rear side of the ram is sequentially provided with a piston assembly and a transmission part, and the transmission part transmits the driving force of the motor to the piston to make the piston reciprocate linearly so as to drive the ram to continuously impact the ram.
Because the effect is that the mutual electric hammer is in the during operation, because the piston assembly is reciprocating motion under the effect of drive unit to give the ram impact ability in order to strike the ram in succession, the ram can produce great impact force to drive unit simultaneously when compressing the air in the piston, leads to the electric hammer to produce the resilience force and vibrate the effect by a wide margin on the operating personnel on one's body, not only can let operating personnel tired easily, can also cause the danger of potential injury to operating personnel.
Disclosure of Invention
The utility model aims to provide a hammering system of an electric hammer, which can reduce the impact force of a transmission component when the hammer compresses air.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
a hammering system of an electric hammer, which moves under the drive of a motor, comprising:
a cylinder sleeve having a front end and a rear end disposed opposite each other;
the impact assembly is embedded in the cylinder sleeve and comprises a striker rod and a striker which are sequentially arranged, the striker rod is arranged close to the front end, and one end of the striker rod extends out of the front end;
the piston assembly is embedded in the cylinder sleeve and positioned at the rear side of the ram, and comprises a first piston sleeve, a second piston sleeve and a piston which are sequentially arranged, wherein the piston is in sliding insertion connection with the second piston sleeve; and
and the transmission part is connected with the piston and the motor and is used for converting the rotary motion of the motor into the linear reciprocating motion of the piston.
Further, the first air chamber and the second air chamber are arranged along the axial direction of the cylinder sleeve, and the first air chamber is arranged close to the ram
Further, a connecting structure is arranged between the second piston sleeve and the piston, the connecting structure comprises a waist-shaped hole arranged on the piston sleeve and a piston sleeve pin arranged on the piston, and the piston sleeve pin is arranged in the waist-shaped hole in a penetrating manner;
the waist-shaped hole is arranged on the second piston sleeve along the axial direction of the cylinder sleeve so as to enable the piston sleeve pin to move in the waist-shaped hole along the axial direction of the cylinder sleeve.
Further, the transmission component comprises an eccentric shaft with one end connected to an output shaft of the motor and a connecting rod connected with the other end of the eccentric shaft and the piston, wherein the axis of the eccentric shaft is perpendicular to the axis of the motor and parallel to the axis of the connecting rod, and the axis of the connecting rod is collinear with the axis of the piston.
Further, an inserting hole is formed in the piston, the head end of the connecting rod is inserted into the inserting hole, and the axis of the inserting hole, the axis of the connecting rod and the axis of the piston are collinear.
Further, the head end of the connecting rod is detachably connected with the piston through a connecting piece.
Further, the connecting piece is the connecting pin, be provided with on the head end of connecting rod and be used for the mounting hole that the connecting pin passed, be provided with on the piston and be used for the through-hole that the connecting pin passed, the through-hole with the spliced eye is linked together and the axis of through-hole is perpendicular to the axis of spliced eye.
Further, an outer diameter of the ram is adapted to an inner diameter of the cylinder sleeve.
Further, the axis of the ram is collinear with the axis of the cylinder sleeve.
The utility model also provides an electric hammer comprising a hammering system of the electric hammer as claimed in any one of the above.
The utility model has the beneficial effects that: the hammering system of the electric hammer is provided with a first air chamber and a second air chamber which are sequentially arranged, when the driving part drives the piston to do linear reciprocating motion to drive the hammer to continuously impact the hammer rod, the hammer sequentially compresses air in the two air chambers under the action of the reaction force acted on the hammer rod, so that the first air chamber and the second air chamber continuously play a role in buffering and damping twice, the impact force of the driving part when the hammer compresses the air is reduced, the damage of the rebound force of the electric hammer to operators is further reduced, and the use safety coefficient is improved.
The foregoing description is only an overview of the present utility model, and is intended to provide a better understanding of the present utility model, as it is embodied in the following description, with reference to the preferred embodiments of the present utility model and the accompanying drawings.
Drawings
FIG. 1 is a schematic cross-sectional view of a hammering system of an electric hammer according to the present application;
fig. 2 is a schematic view of the structure of the second piston sleeve shown in fig. 1.
Detailed Description
The detailed description of the present application is further described in detail below with reference to the drawings and examples. The following examples are illustrative of the present application, but are not intended to limit the scope of the present application.
In the description of the present application, it should be understood that the terms "center," "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the scope of protection of the present application. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description created in this application, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application can be understood by those of ordinary skill in the art in a specific context.
Referring to fig. 1 and 2, a preferred embodiment of the present application provides an electric hammer having a hammering system, which is driven by a motor (not shown) to move, and includes a cylinder sleeve 1, an impact assembly 2 and a piston assembly 3 embedded in the cylinder sleeve 1, and a transmission member 4 connecting the piston assembly 3 and the motor.
The cylinder sleeve 1 has a front end and a rear end which are disposed opposite to each other, the front end of the cylinder sleeve 1 is adapted to be abutted against a working head (not shown) of an electric hammer, the rear end is adapted to be abutted against a grip handle (not shown) for an operator to grip, and the motor is disposed in the grip handle. The structure of the holding handle and the working head of the electric hammer is the prior art, and is not described herein.
The impact assembly 2 includes a striker 21 and a hammer 22 which are sequentially arranged, the striker 21 being disposed near the front end, and one end of the striker 21 protruding from the front end. So as to be convenient for docking with the working head of the electric hammer. In this embodiment, the outer diameter of the ram 22 is adapted to the inner diameter of the cylinder sleeve 1, so as to avoid the ram 22 from shaking in the cylinder sleeve 1, improve the stability of the electric hammer during use, and make the force of the ram 22 striking the ram 21 more uniform by the axis of the ram 21 and the axis of the cylinder sleeve 1 collinear, thereby improving the use effect. The axis of the cylinder sleeve 1 is shown by arrow a in fig. 1.
The piston assembly 3 comprises a first piston sleeve 31, a second piston sleeve 32 and a piston 33 which is slidably inserted in the second piston sleeve 32, wherein the first piston sleeve 31 is connected to the ram 22, a closed first air chamber 8 is formed between the first piston sleeve 31 and the second piston sleeve 32, and the second piston sleeve 32 and the piston 33 form a closed second air chamber 5. Specifically, the first air chamber 8 and the second air chamber 5 are arranged in the axial direction of the cylinder sleeve 1, and the first air chamber 8 is disposed close to the ram 22.
As described above, the connection structure is provided between the second piston sleeve 32 and the piston 33, and the connection structure includes the waist-shaped hole 61 provided on the piston 33 and the piston sleeve pin 62 provided on the piston 33, and the piston sleeve pin 62 is inserted into the waist-shaped hole 61. The waist-shaped hole 61 is arranged on the second piston sleeve 32 in the axial direction of the cylinder sleeve 1 so that the piston sleeve pin 62 moves in the axial direction of the cylinder sleeve 1 within the waist-shaped hole 61. Further, the piston 33 is linearly reciprocated in the axial direction of the cylinder sleeve 1 in the second piston housing 32 to achieve a compression effect on the air in the second air chamber 5.
The transmission member 4 serves to convert the rotational movement of the motor into linear reciprocating movement of the piston 33. Specifically, the transmission member 4 includes an eccentric shaft 41 having one end connected to an output shaft of the motor and a connecting rod 42 connecting the other end of the eccentric shaft 41 and the piston 33, the axis of the eccentric shaft 41 being perpendicular to the axis of the motor and parallel to the axis of the connecting rod 42, the axis of the connecting rod 42 being collinear with the axis of the piston 33. In this embodiment, the piston 33 is provided with a socket 331, and the head end of the connecting rod 42 is inserted into the socket 331, and the axis of the socket 331, the axis of the connecting rod 42 and the axis of the piston 33 are collinear. The stability of the connecting rod 42 after being in butt joint with the piston 33 is improved by arranging the inserting holes 331, and the connecting rod 42 is conveniently fixed on the piston 33. The axis of the eccentric shaft 41 is shown by arrow b in fig. 1.
As noted above, the head end of the connecting rod 42 is detachably connected to the piston 33 by a connector (not shown) for facilitating subsequent repair or replacement of components within the peening system. In this embodiment, the connecting member is a connecting pin, a mounting hole (not shown) for the connecting pin to pass through is provided on the head end of the connecting rod 42, a through hole 332 for the connecting pin to pass through is provided on the piston 33, the through hole 332 is communicated with the plugging hole 331, and the axis of the through hole 332 is perpendicular to the axis of the plugging hole 331.
In the mounting, the head end of the connecting rod 42 is inserted into the insertion hole 331, and the angle is adjusted so that the mounting hole on the head end of the connecting rod 42 is aligned with the through hole on the piston 33, and then the connecting pin sequentially passes through the through hole on the piston 33 and the mounting hole on the head end of the connecting rod 42 to detachably fix the connecting rod 42 with the piston 33.
In use, the hammering system of the electric hammer of the present application, the transmission member 4 converts the rotational movement of the motor into the linear movement of the piston 33, so that the piston 33 makes a linear reciprocating movement along the axis of the cylinder sleeve 1 within the cylinder sleeve 1.
When the piston 33 moves toward the striking assembly 2 along the axis of the cylinder sleeve 1, the piston 33 approaches the second piston sleeve 32 to reduce the volume of the second air chamber 5 to compress the air in the second air chamber 5, the air in the second air chamber 5 has a tendency to expand outwardly after being compressed to compress the air in the first air chamber 8, and similarly, the air in the first air chamber 8 has a tendency to expand outwardly to apply an impact force to the ram 22, the ram 22 is pushed by the air expansion of the two air chambers to strike the ram 21, the ram 21 applies a reaction force to the ram 22 and transmits to the first air chamber 8, the air in the first air chamber 8 is compressed to have an expansion tendency to slow down the reaction force while compressing the air in the second air chamber 5, and the air in the second air chamber 5 is compressed to have an expansion tendency to play a second buffering effect.
When the piston 33 moves away from the impact assembly 2 along the axis of the cylinder sleeve 1, the piston 33 moves away from the second piston sleeve 32 to increase the volume of the second air chamber 5, the air pressure in the second air chamber 5 decreases, under the action of pressure, the air in the first air chamber 8 pushes the second piston sleeve 32 to move towards the piston 33, at the moment, the volume of the first air chamber 8 increases, so that the internal pressure of the first air chamber 8 decreases, under the action of pressure, the ram 22 compresses the first piston sleeve 31 to move towards the second piston sleeve 32, so that the volume of the first air chamber 8 decreases, and the ram 22 is driven to move away from the ram 21 along the axis of the cylinder sleeve 1, and the steps are circulated under the linear reciprocating motion of the piston 33, so that the continuous impact of the ram 22 on the ram 21 is realized.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.
Claims (10)
1. A hammering system of an electric hammer, which moves under the drive of a motor, comprising:
a cylinder sleeve having a front end and a rear end disposed opposite each other;
the impact assembly is arranged in the cylinder sleeve in a sliding manner and comprises a striker rod and a striker which are sequentially arranged, the striker rod is arranged close to the front end, and one end of the striker rod extends out of the front end;
the piston assembly is embedded in the cylinder sleeve and positioned at the rear side of the ram, and comprises a first piston sleeve, a second piston sleeve and a piston which are sequentially arranged, wherein the piston is in sliding insertion connection with the second piston sleeve; and
and the transmission part is connected with the piston and the motor and is used for converting the rotary motion of the motor into the linear reciprocating motion of the piston.
2. The hammering system of electric hammer according to claim 1, wherein said first air chamber and second air chamber are arranged in an axial direction of said cylinder sleeve, and said first air chamber is provided close to said hammer.
3. The hammering system of the electric hammer according to claim 1, wherein a connecting structure is provided between the second piston sleeve and the piston, the connecting structure includes a waist-shaped hole provided on the piston sleeve and a piston sleeve pin provided on the piston, the piston sleeve pin is penetrated in the waist-shaped hole;
the waist-shaped hole is arranged on the second piston sleeve along the axial direction of the cylinder sleeve so as to enable the piston sleeve pin to move in the waist-shaped hole along the axial direction of the cylinder sleeve.
4. A hammering system of an electric hammer according to claim 1, characterized in that said transmission means comprise an eccentric shaft connected at one end to an output shaft of said motor and a connecting rod connecting the other end of said eccentric shaft and a piston, the axis of said eccentric shaft being perpendicular to the axis of said motor and parallel to the axis of said connecting rod, the axis of said connecting rod being collinear with the axis of said piston.
5. The hammering system of electric hammer according to claim 4, wherein a plug hole is provided on said piston, and a head end of said connecting rod is inserted into said plug hole, and an axis of said plug hole, an axis of said connecting rod and an axis of said piston are collinear.
6. The hammering system of electric hammer according to claim 5, wherein the head end of said connecting rod is detachably connected with said piston through a connecting piece.
7. The hammering system of electric hammer according to claim 6, wherein said connecting piece is a connecting pin, a mounting hole for said connecting pin to pass through is provided on a head end of said connecting rod, a through hole for said connecting pin to pass through is provided on said piston, said through hole is communicated with said inserting hole and an axis of said through hole is perpendicular to an axis of said inserting hole.
8. The hammering system of the electric hammer according to claim 1, wherein an outer diameter of said hammer is adapted to an inner diameter of said cylinder sleeve.
9. The hammering system of the electric hammer according to claim 8, wherein an axis of said striker rod is collinear with an axis of said cylinder sleeve.
10. An electric hammer comprising a hammering system of the electric hammer according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320164182.0U CN219426716U (en) | 2023-02-09 | 2023-02-09 | Hammering system of electric hammer and electric hammer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320164182.0U CN219426716U (en) | 2023-02-09 | 2023-02-09 | Hammering system of electric hammer and electric hammer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219426716U true CN219426716U (en) | 2023-07-28 |
Family
ID=87334108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320164182.0U Active CN219426716U (en) | 2023-02-09 | 2023-02-09 | Hammering system of electric hammer and electric hammer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219426716U (en) |
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2023
- 2023-02-09 CN CN202320164182.0U patent/CN219426716U/en active Active
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