CN217093805U - Vibration exciter eccentric wheel and high-frequency breaking hammer - Google Patents
Vibration exciter eccentric wheel and high-frequency breaking hammer Download PDFInfo
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- CN217093805U CN217093805U CN202220459258.8U CN202220459258U CN217093805U CN 217093805 U CN217093805 U CN 217093805U CN 202220459258 U CN202220459258 U CN 202220459258U CN 217093805 U CN217093805 U CN 217093805U
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Abstract
The utility model discloses a vibration exciter eccentric wheel and high frequency quartering hammer: the vibration exciter eccentric wheels of the eccentric blocks are symmetrically arranged on two sides of the gear, so that bending moment generated by the eccentric blocks can be avoided. The stress at the two ends of the rotating shaft is balanced, the rotating shaft and the bearing structure are optimized, the abrasion of the rotating shaft is reduced, the working efficiency of the high-frequency breaking hammer is improved, and the service life is prolonged. And the gear does not bear torque any more, and the gear can be selected from a small module so as to reduce the weight of the gear and the cost.
Description
Technical Field
The utility model belongs to the engineering machine tool field, concretely relates to vibration exciter eccentric wheel and high frequency quartering hammer.
Background
The high-frequency breaking hammer is used for engineering breaking and has the following action principle: a plurality of vibration exciter eccentric wheels which are horizontally arranged in the vibration exciter are meshed through a gear to rotate reversely at a high speed, the component forces in the horizontal direction are mutually offset, and the component forces in the vertical direction are mutually superposed, so that the front-end cutter teeth are periodically driven to operate on an object to be crushed.
The vibration exciter eccentric wheel comprises a rotating shaft, a gear and an eccentric block, wherein the gear and the eccentric block are fixed on the rotating shaft, and the eccentric block generates centrifugal force F when the rotating shaft rotates. The existing eccentric wheel of the vibration exciter is generally provided with only one gear and one eccentric block on a rotating shaft, so that the gear and the eccentric block are deviated from the central position of the rotating shaft. When the rotating shaft rotates, the eccentric block not only generates radial centrifugal force F, but also generates bending moment M in the axial plane of the rotating shaft. This causes uneven stress on both ends of the rotating shaft, which increases the wear of the rotating shaft, shortens the service life of the eccentric wheel of the vibration exciter, and also generates harmful vibration and noise, reducing the working efficiency of the high-frequency breaking hammer, so there is a need for improvement.
Through patent retrieval, with the utility model discloses there is following patent mainly to have the patent of certain relation:
1. the invention discloses a high-frequency breaking hammer, which is a Chinese invention patent with the application number of 201310743741.4, the application date of 2013.12.29, the publication number of CN103706451B, the publication date of 2015.11.18, the name of high-frequency breaking hammer and the application person of Shanghai Ming Mechanic science and technology Limited company, and the invention patent discloses the high-frequency breaking hammer which comprises a mounting shell, a vibration exciter, a four-bar linkage mechanism and a vibration cutter row, wherein the vibration exciter comprises a shell, a first driving shaft mounted in the shell, a first driven shaft meshed with the first driving shaft through a gear, a second driving shaft, a second driven shaft meshed with the second driving shaft through a gear and a bridge shaft mounted between the first driving shaft and the second driving shaft; a first driving motor and a second driving motor are respectively arranged at one end of the first driving shaft and one end of the second driving shaft; the central axes of the first driving shaft and the second driving shaft are positioned on the same vertical plane; the first driving shaft and the first driven shaft, and the second driving shaft and the second driven shaft are positioned on the same horizontal plane. The invention adopts two groups of driving shafts and is matched with two driving motors, and compared with a breaking hammer driven by a single motor, the breaking hammer has the advantages of large breaking force, high breaking precision, low noise and strong breaking capacity, thereby prolonging the working time of the breaking hammer and improving the breaking efficiency.
2. The utility model discloses a high-frequency breaking hammer, which comprises a vibration exciter, a breaking cutter row, a bucket tooth, at least one set of pull rod positioning mechanism and an installation shell, wherein the application number is CN201120095636.0, the application date is 2011.04.02, the publication number is CN202055279U, the publication date is 2011.11.30, the name is 'high-frequency breaking hammer', the application person is 'Cao national Jun', fan YuXin 'and Liu Jian'; the crushing cutter row is positioned on a vertical plane and fixedly connected to the shell of the vibration exciter, and the bucket teeth are arranged at the tail end of the crushing cutter row; the vibration exciter is connected with the mounting shell through a vibration damping device; each set of pull rod positioning mechanism is arranged between the mounting shell and the crushing cutter row, so that the bucket teeth hit the same point under the condition that the position of the high-frequency crushing hammer is not changed. The utility model can ensure the accuracy and verticality of the bucket tooth action point by arranging the pull rod positioning mechanism and the mounting shell, and can improve the utilization rate of vibration energy and reduce noise; in addition, this utility model's high frequency quartering hammer can carry out the breakage by any angle, and is not restricted to vertical decurrent arrangement.
3. The utility model discloses a high-frequency breaking hammer, which is a utility model with the application number of 201420418015.5, the application date of 2014.07.28, the publication number of CN204107611U and the publication date of 2015.01.21, the name of high-frequency breaking hammer and the application person of Chongqing Yu electric group Limited company, and the utility model discloses a high-frequency breaking hammer, which comprises a machine shell, a pull rod group, an excitation box, a cutter row and cutter teeth; the excitation box comprises a box body, a hydraulic motor, a transmission gear and an eccentric wheel; the two transmission gears and the two eccentric wheels are meshed together, and the two eccentric wheels are connected with a transmission gear through a transmission shaft respectively; the output shaft of the hydraulic motor is connected with a speed change gear, and the speed change gear is meshed with one of the transmission teeth; one side of the box body, which is far away from the knife row, is an open side, and a side cover capable of sealing the open side is arranged on the open side of the box body. The utility model discloses a structure is compacter, and crushing efficiency is higher to life is longer.
However, the gear and the eccentric block of the above patent are deviated from the center of the rotating shaft, and the stress at the two ends of the rotating shaft is not balanced.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to the defect that exists among the prior art, provide a vibration exciter eccentric wheel and high frequency quartering hammer.
In order to solve the technical problem, the utility model discloses the technical scheme who takes does: an eccentric wheel of a vibration exciter comprises a rotating shaft, a gear and an eccentric block. The gear is arranged in the middle of the rotating shaft, and eccentric blocks are symmetrically arranged on two sides of the gear. Avoid the bending moment M generated by the bias of the eccentric block. The stress at the two ends of the rotating shaft is balanced, the abrasion of the rotating shaft is reduced, and the working efficiency of the high-frequency breaking hammer is improved. And the gear does not bear torque any more, and the gear can be selected from a small module so as to reduce the weight of the gear and the cost.
Furthermore, the gear and the rotating shaft are integrally formed, and the rotating shaft is provided with a rotating matching section near the two sides of the gear; the eccentric block is provided with an eccentric block matching hole, and the rotating matching section is used for matching with the eccentric block matching hole, so that the eccentric block, the gear and the rotating shaft rotate together. The integrated structure is compact and the transmission is reliable.
Further, the gear and the rotating shaft are respectively molded, a gear matching hole is formed in the center of the gear, and a rotating matching section is arranged in the middle of the rotating shaft; the rotation matching section is used for matching with the gear matching hole and the eccentric block matching hole, so that the gear and the eccentric block rotate together with the rotating shaft. The worn gear is convenient to replace, and the cost can be reduced.
Furthermore, the eccentric block is formed by combining a fan shape and a square or cylindrical shape, the circle center of the fan shape is the square or cylindrical shape, and the eccentric block matching hole is formed in the circle center of the fan shape.
Furthermore, the central angle of the eccentric block is more than or equal to 150 degrees and more than or equal to 90 degrees.
Furthermore, the rotating matching section is a square shaft, and the gear matching hole and the eccentric block matching hole are square holes. The assembly mode can ensure that the eccentric blocks at two sides of the gear are positioned at the same angle, thereby generating better centrifugal effect.
Furthermore, the running fit section is an external spline, and the gear mating hole and the eccentric block mating hole are internal splines. The assembly mode has the advantages of simple structure, small size and low cost.
Furthermore, the end part of the rotating shaft is provided with a transmission connecting part which is connected with the hydraulic motor through the transmission connecting part.
Furthermore, both ends of the rotating shaft are provided with transmission connecting parts. The two ends of the rotating shaft can be connected with the hydraulic motor, so that the driving force of the eccentric wheel of the vibration exciter can be increased, the torques at the two ends of the rotating shaft can be balanced, and the internal stress of the rotating shaft is reduced.
The utility model discloses still relate to a high frequency quartering hammer, include: the vibration exciter comprises a vibration exciter eccentric wheel, and eccentric blocks are symmetrically arranged on two sides of a gear of the vibration exciter eccentric wheel. The eccentric wheel of the vibration exciter has the advantages that the two ends of the rotating shaft are stressed uniformly, the abrasion of the rotating shaft is reduced, the working efficiency of the high-frequency breaking hammer is improved, and the service life is prolonged.
The utility model has the advantages that: the vibration exciter eccentric wheels of the eccentric blocks are symmetrically arranged on two sides of the gear, so that bending moment generated by the eccentric blocks can be avoided. The stress at the two ends of the rotating shaft is balanced, the rotating shaft and the bearing structure are optimized, the abrasion of the rotating shaft is reduced, the working efficiency of the high-frequency breaking hammer is improved, and the service life is prolonged. And the gear does not bear torque any more, and the gear can be selected from a small module so as to reduce the weight of the gear and the cost.
Drawings
FIG. 1 is a schematic perspective view of an eccentric wheel of a conventional vibration exciter,
FIG. 2 is a schematic perspective view of an embodiment,
FIG. 3 is a schematic front view of the embodiment,
figure 4 is a schematic side view of the embodiment,
FIG. 5 is a perspective view of an embodiment of a rotating shaft,
FIG. 6 is a schematic cross-sectional view of an embodiment of a rotating shaft,
FIG. 7 is a schematic perspective view of a second rotating shaft according to an embodiment,
FIG. 8 is a perspective view of a gear according to an embodiment,
FIG. 9 is a perspective view of a second eccentric block according to an embodiment,
FIG. 10 is a front view of a second eccentric block of the embodiment,
FIG. 11 is an exploded perspective view of the third embodiment,
FIG. 12 is a schematic perspective view of a third embodiment.
In the figure: 1-rotating shaft, 11-rotating matching section, 12-transmission connecting part; 2-gear, 21-gear mating hole; 3-eccentric block, 31-eccentric block matching hole and alpha-eccentric block central angle.
Detailed Description
The invention will be further described by means of specific embodiments and with reference to the accompanying drawings:
the vibration exciter eccentric wheel comprises a rotating shaft 1, a gear 2 and an eccentric block 3, and the existing vibration exciter eccentric wheel is shown in figure 1: the eccentric wheel of the vibration exciter is generally provided with only one gear 2 and one eccentric block 3 on one rotating shaft 1, so that the gear 2 and the eccentric block 3 are deviated from the central position of the rotating shaft 1. When the eccentric mass 3 rotates with the rotating shaft 1, not only a radial centrifugal force F is generated, but also a bending moment M is generated in the axial plane of the rotating shaft 1. The stress at the two ends of the rotating shaft 1 is unbalanced, so that the abrasion of the rotating shaft 1 is increased, the service life of the eccentric wheel of the vibration exciter is shortened, harmful vibration and noise are generated, and the working efficiency of the high-frequency breaking hammer is reduced.
In one embodiment, as shown in FIGS. 2 to 4: the vibration exciter comprises a rotating shaft 1, a gear 2 and two eccentric blocks 3. The gear 2 is arranged in the middle of the rotating shaft 1, and eccentric blocks 3 are symmetrically arranged on two sides of the gear 2. This avoids bending moment M due to the eccentric mass offset. The stress at the two ends of the rotating shaft is balanced, the abrasion of the rotating shaft is reduced, the service life of the eccentric wheel of the vibration exciter is prolonged, and the working efficiency of the high-frequency breaking hammer is improved.
The rotating shaft 1 of the first embodiment is shown in fig. 5 to 6: the gear 2 and the rotating shaft 1 are integrally formed, the rotating shaft 1 is provided with a rotation matching section 11 close to the two sides of the gear 2, and the rotation matching section 11 is a square shaft. The two ends of the rotating shaft 1 are provided with transmission connecting parts 12, the transmission connecting parts 12 can adopt splines, flat keys, friction plates or bolts, and the transmission connecting parts 12 adopt internal splines in the embodiment. Both ends of the rotating shaft 1 can be connected with a hydraulic motor, so that the driving force of the eccentric wheel of the vibration exciter can be increased, the torques at both ends of the rotating shaft 1 can be balanced, and the internal stress of the rotating shaft 1 is reduced. The integrated structure is compact and the transmission is reliable.
The rotating shaft 1 of the second embodiment is shown in fig. 7: the gear 2 and the rotating shaft 1 are respectively formed, the middle of the rotating shaft 1 is a rotation matching section 11, and the rotation matching section 11 is a square shaft. Both ends of the rotating shaft 1 are provided with transmission connecting parts 12, and the transmission connecting parts 12 adopt internal splines. This structure facilitates replacement of the worn gear 2, and can reduce cost.
The gear 2 of the second embodiment is shown in fig. 8: the gear 2 is centrally provided with a gear mating hole 21, and the gear mating hole 21 is a square hole. The gear fitting hole 21 is fitted over the rotation fitting section 11, thereby mounting the gear 2 to the middle position of the rotation shaft 1. The square hole is big, the processing of being convenient for with square shaft complex time driven moment of transmission mode, can make the eccentric block 3 of 2 both sides of gear be in same angle moreover, produces better centrifugal effect.
The eccentric mass 3 of the second embodiment is shown in fig. 9 to 10: the eccentric block 3 is formed by combining a sector and a square. The central angle alpha of the eccentric block is in the range of 150-90 degrees, and the test proves that the excitation effect is the best when the central angle alpha of the eccentric block is 120 degrees. The circle center of the sector is provided with a square eccentric block matching hole 31, and the square eccentric block matching hole 31 is sleeved on the square rotating matching section 11, so that the eccentric block 3 is installed on the rotating shaft 1.
Example three is shown in figures 11 and 12: the gear 2 and the rotating shaft 1 are respectively molded, the rotationally matched section 11 of the rotating shaft 1 is an external spline, the two ends of the rotating shaft 1 are both provided with a transmission connecting part 12, and the transmission connecting part 12 is an internal spline. The gear mating hole 21 of the gear 2 is an internal spline, and the eccentric block mating hole 31 of the eccentric block 3 is an internal spline. The gear 2 and the eccentric block 3 are symmetrically arranged on the rotating shaft 1 by spline fit, and the rotary connecting structure adopting spline fit is simple and convenient, easy to process and low in cost.
The utility model discloses still relate to a high frequency quartering hammer, include: the vibration exciter comprises a vibration exciter eccentric wheel. The vibration exciter eccentric wheel is the vibration exciter eccentric wheel with eccentric blocks 3 symmetrically arranged on two sides of the gear 2. Avoid the bending moment M generated by the bias of the eccentric block. The stress at the two ends of the rotating shaft is balanced, the abrasion of the rotating shaft is reduced, the service life of the eccentric wheel of the vibration exciter is prolonged, and the working efficiency of the high-frequency breaking hammer is improved.
In summary, the following steps: the utility model has the advantages that: the vibration exciter eccentric wheels of the eccentric blocks are symmetrically arranged on two sides of the gear, so that bending moment generated by the eccentric blocks can be avoided. The stress at the two ends of the rotating shaft is balanced, the rotating shaft and the bearing structure are optimized, the abrasion of the rotating shaft is reduced, the working efficiency of the high-frequency breaking hammer is improved, and the service life is prolonged. And the gear does not bear torque any more, and the gear can be selected from a small module so as to reduce the weight of the gear and reduce the cost.
The above embodiments are provided only for the purpose of illustration, not for the limitation of the present invention, and those skilled in the relevant art can make various changes or modifications without departing from the spirit and scope of the present invention, so all equivalent technical solutions should also belong to the protection scope of the present invention, and the protection scope of the present invention should be defined by the claims.
Claims (7)
1. The utility model provides a vibration exciter eccentric wheel, includes pivot (1), gear (2) and eccentric block (3), its characterized in that: the gear (2) is arranged in the middle of the rotating shaft (1), and eccentric blocks (3) are symmetrically arranged on two sides of the gear (2); the eccentric block (3) is formed by combining a fan shape and a square or cylindrical shape, the circle center part of the fan shape is the square or cylindrical shape, the eccentric block matching hole (31) is arranged at the circle center of the fan shape, and the eccentric block central angle (alpha) is more than or equal to 150 degrees.
2. The exciter eccentric wheel according to claim 1, characterized in that: the gear (2) and the rotating shaft (1) are integrally formed, and the rotating shaft (1) is provided with a rotating matching section (11) close to two side parts of the gear (2); the eccentric block (3) is provided with an eccentric block matching hole (31), and the rotating matching section (11) is used for matching with the eccentric block matching hole (31) so that the eccentric block (3), the gear (2) and the rotating shaft (1) rotate together.
3. The exciter eccentric wheel according to claim 1, characterized in that: the gear (2) and the rotating shaft (1) are respectively molded, a gear matching hole (21) is formed in the center of the gear (2), and a rotating matching section (11) is arranged in the middle of the rotating shaft (1); the rotation matching section (11) is used for matching with the gear matching hole (21) and the eccentric block matching hole (31) so that the gear (2) and the eccentric block (3) rotate together with the rotating shaft (1).
4. The exciter eccentric wheel according to claim 2 or 3, characterized in that: the rotating matching section (11) is an external spline, and the gear matching hole (21) and the eccentric block matching hole (31) are internal splines.
5. The exciter eccentric wheel according to claim 4, characterized in that: the end part of the rotating shaft (1) is provided with a transmission connecting part (12).
6. The exciter eccentric wheel according to claim 5, characterized in that: both ends of the rotating shaft (1) are provided with transmission connecting parts (12).
7. A high frequency demolition hammer comprising: shell, vibration exciter and sword tooth, the vibration exciter includes the vibration exciter eccentric wheel, its characterized in that: the vibration exciter eccentric wheel is as claimed in any one of claims 1 to 6, and eccentric blocks (3) are symmetrically arranged on two sides of a gear (2) of the vibration exciter eccentric wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220459258.8U CN217093805U (en) | 2022-03-04 | 2022-03-04 | Vibration exciter eccentric wheel and high-frequency breaking hammer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220459258.8U CN217093805U (en) | 2022-03-04 | 2022-03-04 | Vibration exciter eccentric wheel and high-frequency breaking hammer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217093805U true CN217093805U (en) | 2022-08-02 |
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ID=82601657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220459258.8U Active CN217093805U (en) | 2022-03-04 | 2022-03-04 | Vibration exciter eccentric wheel and high-frequency breaking hammer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217093805U (en) |
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2022
- 2022-03-04 CN CN202220459258.8U patent/CN217093805U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230906 Address after: 412000 Lukou Town Industrial Park, Lukou District, Zhuzhou City, Hunan Province Patentee after: Hunan Guangming Heavy Machinery Manufacturing Co.,Ltd. Address before: 412100 Guangming heavy machinery company, Wantang Industrial Park, Lukou District, Zhuzhou City, Hunan Province Patentee before: ZHUZHOU SUNER HEAVY-MACHINERY Co.,Ltd. |