CN111980701A - Breaking hammer with novel vibration reduction principle - Google Patents
Breaking hammer with novel vibration reduction principle Download PDFInfo
- Publication number
- CN111980701A CN111980701A CN202010022925.1A CN202010022925A CN111980701A CN 111980701 A CN111980701 A CN 111980701A CN 202010022925 A CN202010022925 A CN 202010022925A CN 111980701 A CN111980701 A CN 111980701A
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- eccentric
- block
- platform
- mass block
- connecting plate
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- 239000000428 dust Substances 0.000 claims abstract description 15
- 238000013016 damping Methods 0.000 claims description 10
- 238000009434 installation Methods 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000008901 benefit Effects 0.000 abstract description 5
- 230000002265 prevention Effects 0.000 abstract description 2
- 230000006378 damage Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C27/00—Machines which completely free the mineral from the seam
- E21C27/20—Mineral freed by means not involving slitting
- E21C27/28—Mineral freed by means not involving slitting by percussive drills with breaking-down means, e.g. wedge-shaped tools
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/08—Wrecking of buildings
- E04G23/082—Wrecking of buildings using shears, breakers, jaws and the like
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C31/00—Driving means incorporated in machines for slitting or completely freeing the mineral from the seam
- E21C31/02—Driving means incorporated in machines for slitting or completely freeing the mineral from the seam for cutting or breaking-down devices
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Geology (AREA)
- Geochemistry & Mineralogy (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Electrochemistry (AREA)
- Chemical & Material Sciences (AREA)
- Crushing And Grinding (AREA)
Abstract
The invention discloses a breaking hammer with a novel vibration reduction principle, which comprises a rectangular frame platform, a first mass block and a second mass block, wherein the eccentric mass of the first eccentric block is larger than that of the second eccentric block, the eccentric distances of the first eccentric block and the second eccentric block are the same, and the phase angle is 180 degrees different; the first mass block is placed on the upper surface of the upper platform, the second mass block is positioned above the upper platform, the second mass block is connected with the four corresponding second eccentric blocks through second cranks, and the first mass block is respectively connected with a connecting rod between the opposite first eccentric blocks in the two eccentric groups through two first cranks; the second mass block is provided with a through hole for the first mass block to pass through. The invention reduces the loss of structures such as the air spring and the like, and increases the benefit; the dust cover only plays a role in dust prevention, and the structure is not damaged because the dust cover is connected with the spring and needs to absorb transmitted energy; the working state depends on the external non-pressure acting on the breaking hammer head, thereby avoiding idle striking and energy loss and reducing noise.
Description
Technical Field
The invention relates to a breaking and dismantling instrument, in particular to a breaking hammer with a novel vibration reduction principle.
Background
The breaking hammer is a common tool in the building demolition and mine exploitation processes, at present, a plurality of eccentric blocks rotate oppositely to promote vertical force superposition, and the vibration breaking hammer with offset horizontal force is favored in the demolition industry by virtue of the advantages of high efficiency, low noise and the like, but (1) the breaking hammer has the problems that due to larger vertical force, the air spring, the metal spring, the composite spring and the like which are applied to the breaking hammer always have serious spring consumption or incomplete vibration reduction to cause structural damage and the like, and the reason is that the installation form and the vibration reduction principle of the spring are basically the same no matter what type of spring is adopted, namely, the energy is absorbed by the deformation of the spring between a breaking hammer box body and a vibration structure, so that the problems are caused; (2) the breaking hammer of the type does not have the function of automatically adjusting the flow, so that the same exciting force is always adopted when different objects are broken, energy waste is caused, the noise is high, and the machine is damaged due to the phenomenon of idle driving.
Disclosure of Invention
In view of the above-mentioned drawbacks and deficiencies of the prior art, it is an object of the present invention to provide a demolition hammer with a novel vibration damping principle, which is not prone to damage.
The purpose of the invention is realized by the following technical scheme:
a breaking hammer with a novel vibration reduction principle comprises a rectangular frame platform, a first mass block and a second mass block, wherein the rectangular frame platform comprises an upper platform and a lower platform, the upper platform and the lower platform are fixedly connected through four connecting plates located at four corner positions of the opposite surfaces of the upper platform and the lower platform to form a rectangular frame structure, a connecting shaft is arranged at the middle point of each connecting plate in a penetrating mode, a first eccentric block and a second eccentric block are respectively installed at two ends of the connecting shaft, the first eccentric block is located in the rectangular frame structure, the second eccentric block is located outside the rectangular frame structure, and the two opposite first eccentric blocks are fixedly connected through a connecting rod; the two first eccentric blocks and the second eccentric blocks corresponding to the two connecting shafts with coincident axes are an eccentric group, and the two eccentric groups have the same rotating speed and opposite rotating directions; the eccentric mass of the first eccentric block is larger than that of the second eccentric block, the eccentric distances of the first eccentric block and the second eccentric block are the same, and the phase angle is 180 degrees different; the first mass block is placed on the upper surface of the upper platform, the second mass block is positioned above the upper platform, the second mass block is connected with the four corresponding second eccentric blocks through second cranks, and the first mass block is respectively connected with a connecting rod between the opposite first eccentric blocks in the two eccentric groups through two first cranks; the second mass block is provided with a through hole for the first mass block to pass through.
Preferably, a main shaft is connected between center points of opposite surfaces of the upper platform and the lower platform.
Preferably, a horizontal mounting hole is formed in the main shaft, the mounting hole is a rectangular hole, and a vibration sensor is mounted in the rectangular hole.
Preferably, the connecting plate includes upper junction plate and lower connecting plate, upper junction plate and upper mounting plate fixed connection, connecting plate and lower mounting plate fixed connection, upper junction plate and lower connecting plate part overlap, open the through-hole in the overlap position, the connecting axle passes the through-hole on upper junction plate and the lower connecting plate in proper order and connects first eccentric block and second eccentric block respectively.
Preferably, the upper surface of the upper platform is provided with a lifting lug, and two lug plates of the lifting lug extend along the length direction of the upper platform and are symmetrically distributed.
Preferably, the main shaft is rectangular, the length direction of the rectangular hole is the same as that of the rectangular main shaft, and the penetrating direction of the rectangular hole is the same as the axial direction of the transmission shaft.
Preferably, the two sides of the main shaft are respectively provided with a hydraulic motor, the axes of the two hydraulic motors are overlapped, an output shaft of the hydraulic motor is provided with a driving wheel, the connecting shafts positioned at the two sides of the hydraulic motor are provided with driving wheels, the driving wheels and the driving wheel are driven by a driving belt, the upper side and the lower side of the driving wheel positioned at any side of the hydraulic motor are provided with reversing wheels, and the driving wheels at the two sides are opposite in turning direction by the reversing wheels.
Preferably, the two hydraulic motors are respectively arranged on two sides of the main shaft through mounting plates, and the rectangular holes are sealed through the mounting plates.
Preferably, the second mass block is provided with a yielding hole corresponding to the lifting lug.
Preferably, the dustproof cover is fixed on the lower platform, and the dustproof cover is provided with an avoiding hole for the lifting lug to pass through and correspond to the swing track of the first eccentric block and the second eccentric block.
Compared with the prior art, the embodiment of the invention at least has the following advantages:
(1) the innovation of the vibration reduction principle is that a novel vibration reduction mechanism is designed according to the momentum theorem;
(2) the flow of the motor is intelligently controlled by adopting a vibration sensor in combination with the application of a deformation sensitive material;
(3) the innovation of structure, install the lug on fixed platform and avoid energy transfer to make its destruction on vibration box or the dust cage.
Based on the advantages, the loss of structures such as the air spring is reduced, and the benefit is increased; the dust cover only plays a role in dust prevention, and the structure is not damaged because the dust cover is connected with the spring and needs to absorb transmitted energy; the working state depends on the external non-pressure acting on the breaking hammer head, thereby avoiding idle striking and energy loss and reducing noise.
Drawings
Fig. 1 is a schematic structural view of a demolition hammer with a novel damping principle;
FIG. 2 is a schematic structural view of a demolition hammer with a novel vibration reduction principle with dust covers removed;
FIG. 3 is a schematic diagram showing a rectangular aperture and vibration sensor location;
FIG. 4 is a side view of FIG. 2;
FIG. 5 is a schematic diagram illustrating one condition of the demolition hammer;
FIG. 6 is a schematic diagram showing another condition of the demolition hammer;
fig. 7 is a partially enlarged view of a portion a in fig. 3.
Reference numerals: 1. a first mass block; 2. a second mass block; 3. a first eccentric mass; 4. a second eccentric mass; 5. an upper platform; 6. a lower platform; 7. an upper connecting plate; 8. a lower connecting plate; 9. a connecting shaft; 10. a rectangular hole; 11. a hydraulic motor; 12. a driving wheel; 13. a reversing wheel; 14. a driving wheel; 15. lifting lugs; 16. a vibration sensor; 17. a first crank; 18. a second crank; 19. crushing a hammer head; 20. a dust cover; 21. a main shaft; 22. and (7) mounting the plate.
Detailed Description
The present invention will be described in further detail with reference to the following examples and figures 1-4, which are illustrative and not limiting, and the scope of the present invention is not limited thereto.
The utility model provides a quartering hammer with novel damping principle, includes rectangular frame platform, first quality piece 1 and second quality piece 2, the rectangular frame platform includes upper mounting plate 5 and lower platform 6, forms rectangular frame structure through four connecting plate fixed connection that are located upper mounting plate 5 and four corner positions of lower platform 6 opposite face between upper mounting plate 5 and the lower platform 6, and rectangular frame structure below central point puts and is provided with broken tup 19. A connecting shaft 9 penetrates through the middle point of each connecting plate, a first eccentric block 3 and a second eccentric block 4 are respectively installed at two ends of each connecting shaft 9, the first eccentric blocks 3 are located in the rectangular frame structure, the second eccentric blocks 4 are located outside the rectangular frame structure, and the two opposite first eccentric blocks 3 are fixedly connected through connecting rods. The two first eccentric blocks 3 and the second eccentric blocks 4 corresponding to the two connecting shafts 9 with coincident axes are an eccentric group, and the rotating speeds of the two eccentric groups are the same and the rotating directions are opposite. The eccentric mass of the first eccentric block 3 is larger than that of the second eccentric block 4, and the eccentricity of the first eccentric block 3 is the same with that of the second eccentric block 4, and the phase angle is 180 degrees different. The first mass block 1 is placed on the upper surface of the upper platform 5, the second mass block 2 is positioned above the upper platform 5, the second mass block 2 is connected with the corresponding four second eccentric blocks 4 through second cranks 18, and the first mass block 1 is respectively connected with a connecting rod between the opposite first eccentric blocks 3 in the two eccentric groups through two first cranks 17; the second mass block 2 is provided with a through hole for the first mass block 1 to pass through.
A rectangular main shaft 21 is connected between the center points of the opposite surfaces of the upper platform 5 and the lower platform 6. A horizontal mounting hole is formed in the main shaft 21, the mounting hole is a rectangular hole 10, and a vibration sensor 16 is mounted in the rectangular hole 10.
In order to avoid the transmission of vibration on the main shaft 21, the connecting plate is processed into an upper connecting plate 7 and a lower connecting plate 8, the upper connecting plate 7 is fixedly connected with the upper platform 5, the connecting plate is fixedly connected with the lower platform 6, the upper connecting plate 7 is partially overlapped with the lower connecting plate 8, through holes are formed in the overlapped positions, and the connecting shaft 9 sequentially penetrates through the through holes in the upper connecting plate 7 and the lower connecting plate 8 to be respectively connected with the first eccentric block 3 and the second eccentric block 4.
In order to facilitate the installation of the breaking hammer and the mechanical arm, a lifting lug 15 is arranged on the upper surface of the upper platform 5, and two lug plates of the lifting lug 15 extend along the length direction of the upper platform 5 and are symmetrically distributed.
In order to better collect the micro deformation of the main shaft 21, the length direction of the rectangular hole 10 is the same as the length direction of the rectangular main shaft 21, and the penetrating direction of the rectangular hole 10 is the same as the axial direction of the transmission shaft.
The two sides of the main shaft 21 are respectively provided with a hydraulic motor 11, the axes of the two hydraulic motors 11 are superposed, an output shaft of the hydraulic motor 11 is provided with a driving wheel 14, the connecting shaft 9 positioned at the two sides of the hydraulic motor 11 is provided with a driving wheel 12, the driving wheel 12 and the driving wheel 14 are positioned on the same plane and are driven by a driving belt, reversing wheels 13 are arranged at the upper side and the lower side of the driving wheel 12 positioned at any side of the hydraulic motor 11, and the driving wheels 12 at the two sides are opposite in rotation direction by the reversing wheels 13.
The two hydraulic motors 11 are respectively installed on two sides of the main shaft 21 through the installation plates 22, and the rectangular holes 10 are sealed through the installation plates 22.
The second mass block 2 is provided with a yielding hole corresponding to the lifting lug 15.
The dust cover 20 is fixed on the second mass block 2, and the dust cover 20 is provided with an avoiding hole for the lifting lug 15 to pass through and corresponding to the swing track of the first eccentric block 3 and the second eccentric block 4.
The working principle is as follows: after the crushing machine is connected with the lifting lugs 15, the crushing hammer head 19 is pressed on rock or concrete, and is extruded by a crushed object and the crushing machine, the main shaft 21 generates micro deformation, and then the vibration sensor 16 (deformation sensitive thin shaft) installed in the rectangular hole 10 of the main shaft 21 generates micro deformation, the vibration sensor 16 catches a signal and feeds the signal back to the hydraulic valve of the hydraulic motor 11, at the moment, the valve core of the hydraulic valve moves hydraulic oil to flow into the motor cavity to drive the hydraulic motor 11 to rotate, and then the driving wheels 14 drive the driving wheels 12 on two sides to synchronously rotate in opposite directions, so that the first eccentric block 3 and the second eccentric block 4 are driven to rotate. At this time, because the first eccentric block 3 and the second eccentric block 4 in the two eccentric sets are symmetrically arranged, the vertical force is superposed, and the horizontal force is offset. Although the first eccentric block 3 and the second eccentric block 4 have different sizes and masses, the eccentric distances are the same, so that the speeds in the Y directions (vertical directions) of cranks respectively connected with the first eccentric block 3 and the second eccentric block 4 in the rotating process are always the same, and the directions are opposite; namely, the first mass block 1 and the second mass block 2Y have the same speed and opposite directions. When the first eccentric mass 3 rotates to the lowest position (corresponding to fig. 5), a downward momentum P1 is generated to act on the crushed object, at this moment, the crushed object acts on the crushing hammer 19 with equal magnitude, a momentum P2 with opposite direction, namely, P2, is upward, the momentum is transmitted to the upper platform 5 through the lower platform 6, the main shaft 21 and the connecting plate, at this moment, the first mass 1 has a downward speed, if the first mass 1 and the lower vibrating structure have the same mass, the P3 is M/3V/3-P2, at this moment, the momentum is counteracted after the upper platform 5 and the first mass 1 are contacted, and dP/dt is F, at this moment, no force is transmitted in the structure, the energy is prevented from being transmitted to the vibrating box body to damage the vibrating box body, and when the first eccentric mass 3 rotates to the highest position (corresponding to fig. 6), an upward vibrating body P4 is generated at the lower part, the momentum P5-P4 generated by the second mass 2 with downward velocity will also make the resultant force zero and no vibration will be transmitted to other structures; after the crushed object is broken, the crushing hammer head 19 is not acted by force any more, the vibration sensor 16 (deformation sensitive thin shaft) is restored to the original state, at the moment, the vibration sensor 16 transmits a signal to the hydraulic valve, and the valve core of the hydraulic valve moves to control the flow so as to stop the rotation of the hydraulic motor 11, so that the phenomenon of idle driving of the crushing hammer is avoided; because the lifting lugs 15 are arranged on the upper platform 5 which is fixed in position, and a traditional spring does not need to be arranged, the damage of the vibration box body or the dust cover 20 caused by crushing vibration is avoided.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A breaking hammer with a novel vibration reduction principle is characterized by comprising a rectangular frame platform, a first mass block and a second mass block, wherein the rectangular frame platform comprises an upper platform and a lower platform, the upper platform and the lower platform are fixedly connected through four connecting plates located at four corner positions of opposite surfaces of the upper platform and the lower platform to form a rectangular frame structure, a connecting shaft is arranged at the middle point of each connecting plate in a penetrating mode, a first eccentric block and a second eccentric block are respectively installed at two ends of the connecting shaft, the first eccentric block is located in the rectangular frame structure, the second eccentric block is located outside the rectangular frame structure, and the two opposite first eccentric blocks are fixedly connected through a connecting rod; the two first eccentric blocks and the second eccentric blocks corresponding to the two connecting shafts with coincident axes are an eccentric group, and the two eccentric groups have the same rotating speed and opposite rotating directions; the eccentric mass of the first eccentric block is larger than that of the second eccentric block, the eccentric distances of the first eccentric block and the second eccentric block are the same, and the phase angle is 180 degrees different; the first mass block is placed on the upper surface of the upper platform, the second mass block is positioned above the upper platform, the second mass block is connected with the four corresponding second eccentric blocks through second cranks, and the first mass block is respectively connected with a connecting rod between the opposite first eccentric blocks in the two eccentric groups through two first cranks; the second mass block is provided with a through hole for the first mass block to pass through.
2. The demolition hammer with new damping principle according to claim 1 characterized by the fact that the main shaft is connected between the center point of the opposite faces of the upper and lower platforms.
3. The demolition hammer with new damping principle according to claim 2 characterized by that the main shaft is opened with a horizontal mounting hole, which is a rectangular hole, and a vibration sensor is installed in the rectangular hole.
4. The breaking hammer with the novel vibration damping principle according to claim 1, wherein the connecting plate comprises an upper connecting plate and a lower connecting plate, the upper connecting plate is fixedly connected with the upper platform, the connecting plate is fixedly connected with the lower platform, the upper connecting plate and the lower connecting plate are partially overlapped, through holes are formed in the overlapped position, and the connecting shaft sequentially penetrates through the through holes in the upper connecting plate and the lower connecting plate to be respectively connected with the first eccentric block and the second eccentric block.
5. The breaking hammer with the novel vibration reduction principle according to claim 1, wherein a lifting lug is arranged on the upper surface of the upper platform, and two lug plates of the lifting lug extend along the length direction of the upper platform and are symmetrically distributed.
6. The breaking hammer with the novel vibration damping principle according to claim 3, wherein the main shaft is rectangular, the length direction of the rectangular hole is the same as that of the rectangular main shaft, and the penetrating direction of the rectangular hole is the same as the axial direction of the transmission shaft.
7. The breaking hammer with the novel vibration damping principle according to claim 6, wherein the hydraulic motors are respectively installed on two sides of the main shaft, the axes of the two hydraulic motors are overlapped, the driving wheel is installed on the output shaft of the hydraulic motor, the driving wheels are installed on the connecting shafts on two sides of the hydraulic motor, the driving wheel and the driving wheel are driven through a driving belt, the reversing wheels are arranged on the upper side and the lower side of the driving wheel on any side of the hydraulic motor, and the driving wheels on two sides are opposite in rotation direction through the reversing wheels.
8. The breaking hammer with novel vibration damping principle according to claim 7, characterized in that two hydraulic motors are respectively installed on two sides of the main shaft through installation plates, and the rectangular holes are sealed through the installation plates.
9. The breaking hammer with the novel vibration damping principle according to claim 5, wherein the second mass block is provided with a relief hole corresponding to the lifting lug.
10. The breaking hammer with the novel vibration reduction principle according to claim 9, further comprising a dust cover, wherein the dust cover is fixed on the lower platform, and the dust cover is provided with an avoiding hole for the lifting lug to pass through and corresponding to the swing track of the first eccentric block and the second eccentric block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010022925.1A CN111980701A (en) | 2020-01-09 | 2020-01-09 | Breaking hammer with novel vibration reduction principle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010022925.1A CN111980701A (en) | 2020-01-09 | 2020-01-09 | Breaking hammer with novel vibration reduction principle |
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| Publication Number | Publication Date |
|---|---|
| CN111980701A true CN111980701A (en) | 2020-11-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010022925.1A Pending CN111980701A (en) | 2020-01-09 | 2020-01-09 | Breaking hammer with novel vibration reduction principle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111980701A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115464773A (en) * | 2022-08-10 | 2022-12-13 | 孟德收 | Concrete preparation system |
-
2020
- 2020-01-09 CN CN202010022925.1A patent/CN111980701A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115464773A (en) * | 2022-08-10 | 2022-12-13 | 孟德收 | Concrete preparation system |
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