TWI851528B - Hammer power energy recovery and shock absorption mechanism - Google Patents

Abstract

The present invention discloses a power energy-saving recovery and shock-absorbing mechanism for a breaker hammer, comprising a breaker hammer body, an accumulator, a shock-absorbing device and a pipeline unit. The accumulator is arranged on the outer side of the breaker hammer body through the shock-absorbing device. The pipeline unit is connected to the accumulator and the breaker hammer body. The accumulator uses pressurized gas to store energy. When the piston rod of the breaker hammer body falls, the accumulator stores energy. When the piston rod rises, the accumulator releases the stored energy, thereby realizing the power energy-saving recovery and shock-absorbing functions of the breaker hammer.

Description

Hammer power energy recovery and shock absorption mechanism

The present invention relates to a breaker hammer, and more particularly to a hydraulic breaker power energy recovery and shock absorbing mechanism.

In the process of excavation, demolition or stone crushing, a breaker hammer is usually used to carry out the destruction. The breaker hammer transmits the force from the end of the jackhammer to the location that needs to be destroyed through vibration, and breaks and penetrates it with continuous vibration effect to speed up the demolition work. This equipment can be installed on an excavator (also known as an excavator or a heavy arm), so it has become one of the frequently used equipment of the excavator. It is often used in mountain opening, road crushing, house demolition, bridge demolition and large stone crushing. It is known that the crushing hammer uses hydraulic oil to drive the piston rod to rise, and the piston rod compresses the nitrogen in the nitrogen chamber upward. After the piston rod rises to the top dead center, the reversing valve is switched. At this time, the piston rod is subjected to the oil pressure in the opposite direction, and the thrust of the nitrogen chamber drives the piston rod to fall to the bottom dead center to hit the plunger rod, and the high-speed impact on the plunger rod produces vibration, and then the crushing operation is performed through reciprocating motion.

However, it is known that when the piston rod of the breaker falls, part of the pressure of the nitrogen chamber will be used to squeeze and push the hydraulic oil, and the pressure of squeezing and pushing the hydraulic oil is all borne by the hydraulic oil pipeline and mechanical structure of the excavator, which is easy to cause the hydraulic oil pipeline and mechanical structure of the excavator to exceed the load and be damaged during the crushing operation, resulting in the need to use an extra-large excavator to avoid the above-mentioned damage. In addition, after the piston rod falls, the hydraulic oil of the excavator is simply used to push the piston rod up and return to the top dead center, so the time required for the piston rod to return to the top dead center is long, thereby affecting the efficiency of the crushing operation.

The inventor of the present invention, in view of the above-mentioned shortcomings of known crushing hammers, came up with the idea of creating a new invention. After much discussion and trial production of samples, as well as many revisions and improvements, the present invention was launched.

The present invention discloses a power energy-saving recovery and shock-absorbing mechanism for a breaker hammer, comprising: a breaker hammer body, provided with two side plates, each of the two side plates being provided with a protruding portion, and a receiving space being formed between the two protruding portions, a plunger extending downward from the bottom of the breaker hammer body, the breaker hammer body being provided with a first oil port and a second oil port; at least one accumulator, arranged in the receiving space, the accumulator comprising a clamping seat and a pressure storage bottle, the clamping seat being provided with a receiving chamber, the pressure storage bottle being arranged in the receiving chamber , an air bag is arranged in the pressure storage bottle, and gas is sealed in the air bag; at least one shock absorbing device, the shock absorbing device includes a first shock absorbing unit and a second shock absorbing unit, which are respectively installed between the accumulator and the two side plates; and a pipeline unit, the pipeline unit includes an oil inlet pipe and an oil outlet pipe, the oil inlet pipe is connected to the first oil port, the middle section of the oil inlet pipe is provided with at least one joint, the at least one joint is connected to the air bag of the at least one accumulator, and the oil outlet pipe is connected to the second oil port.

The main purpose of the breaker power energy-saving recovery and shock-absorbing mechanism of the present invention is that the breaker body achieves energy storage effect through the accumulator when the piston rod falls. When the piston rod rises, the stored energy of the accumulator is released, shortening the time required for the piston rod to rise, and effectively realizing the breaker power energy-saving recovery and shock-absorbing function.

The following is a further description of the preferred embodiments of the present invention in conjunction with the drawings, so that those familiar with the relevant technology of the present invention can implement it according to the description of this specification.

First, please refer to the first to eighth figures, the power energy recovery and shock absorbing mechanism of the breaker hammer of the present invention comprises: a breaker hammer body 10, at least one accumulator 20, at least one shock absorbing device 30 and a pipeline unit 40.

The crushing hammer body 10 is provided with two side plates 11, and the two side plates 11 are fixed to each other by screws and nuts. The two side plates 11 are each provided with a protruding portion 111 protruding from the outer side of the crushing hammer body 10, and a receiving space 12 is formed between the two protruding portions 111. In addition, a plunger 13 extends downward from the bottom of the crushing hammer body 10, and a first oil port 14 and a second oil port 15 are provided. A piston rod (not shown in the figure) that can move up and down is provided above the plunger 13 inside the crushing hammer body 10. Moreover, the internal structure of the crushing hammer body 10 belongs to the known technology, so it will not be described here.

The at least one accumulator 20 is two accumulators 20 in this embodiment, which are arranged in the accommodation space 12. The accumulator 20 includes a clamp 21 and a pressure storage bottle 22. The clamp 21 is composed of a first base 21A and a second base 21B. A chamber 211 is provided inside the clamp 21. The pressure storage bottle 22 is arranged in the chamber 211. An air bag 221 is provided inside the pressure storage bottle 22. Gas is sealed in the air bag 221. The gas is nitrogen in this embodiment.

The at least one shock absorbing device 30 is two shock absorbing devices 30 in this embodiment. Each of the shock absorbing devices 30 includes a first shock absorbing unit 31 and a second shock absorbing unit 32, which are respectively installed between the accumulator 20 and the two side plates 11. The first shock absorbing unit 31 is arranged between one side of the accumulator 20 and one of the two side plates 11, and the second shock absorbing unit 32 is arranged between one side of the accumulator 20 and one of the two side plates 11. 32 is disposed between the other side of the accumulator 20 and the other side plate 11 of the two side plates 11. The first shock absorbing unit 31 includes a first fixing plate 311, a second fixing plate 312 and a first elastic body 313. The first elastic body 313 is fixedly connected between the first fixing plate 311 and the second fixing plate 312. The second shock absorbing unit 32 includes A third fixing plate 321, a fourth fixing plate 322 and a second elastic body 323, the second elastic body 323 is fixedly connected between the third fixing plate 321 and the fourth fixing plate 322, the first fixing plate 311 and the third fixing plate 321 of the two shock absorbing devices 30 are fixed to the two side plates 11 by screws and nuts respectively, the second fixing plate 312 and the fourth fixing plate 322 of the two shock absorbing devices 30 are fixed to each other by screws and nuts, and clamp the accumulator 20, the first fixing plate 311, the second fixing plate 312, the third fixing plate 321 and the fourth fixing plate 322 are made of metal materials, the first elastic body 313 and the second elastic body 323 are rubber, springs, etc.

The pipeline unit 40 includes an oil inlet pipe 41 and an oil outlet pipe 42. The oil inlet pipe 41 is connected to the first oil port 14. At least one connector 411 is provided in the middle section of the oil inlet pipe 41. The at least one connector 411 in this embodiment is two connectors 411 connected in series (it can also be two connectors 411 connected in parallel). The connector 411 is a three-way connector. The two connectors 411 are respectively connected to the air bags 221 of the two accumulators 20. The oil outlet pipe 42 is connected to the second oil port 15.

When in use, the crushing hammer body 10 uses hydraulic oil to drive the piston rod to rise, and the piston rod compresses the nitrogen in the nitrogen chamber upward. After the piston rod rises to the top dead center, the reversing valve is switched, and the piston rod is subjected to the oil pressure in the opposite direction. With the thrust of the nitrogen chamber, the piston rod is driven to fall to the bottom dead center to hit the plunger rod, and the plunger rod is vibrated in a high-speed manner, and then the crushing operation is performed through reciprocating motion. During the falling process of the piston rod, as shown in Figures 9 to 11, the hydraulic oil is discharged along the oil outlet pipe 42, and at the same time is squeezed and pushed along the oil inlet pipe 41 into the pressure storage bottle 22 of the second accumulator 20 to compress the air bag 221, so that the air bag 221 is compressed, thereby consuming the pressure of the hydraulic oil squeezed and pushed by the piston rod to achieve the effect of energy storage.

When the piston rod rises, as shown in FIGS. 12 to 14 , the hydraulic oil enters the crushing hammer body 10 along the oil inlet pipe 41, and the airbag 221 uses the rebound force after compression to squeeze the hydraulic oil in the pressure storage bottle 22 along the oil inlet pipe 41 and push it into the crushing hammer body 10, driving the piston rod to rise, shortening the time required for the piston rod to return to the top dead center, and thereby improving the efficiency of the crushing operation.

The structure of the above specific embodiment can obtain the following benefits:

The present invention is a power energy-saving recovery and shock-absorbing mechanism for a breaker hammer. The accumulator 20 is assembled in the accommodation space 12 between the two side plates 11 by means of a shock-absorbing device 30. When the piston rod of the breaker hammer body 10 falls, the hydraulic oil is squeezed and pushed into the pressure accumulator bottle 22 to compress the airbag 221, thereby consuming the pressure of the hydraulic oil to achieve the energy storage effect and avoid the hydraulic oil of the excavator from being damaged. The oil pipeline (oil inlet pipe 41, oil outlet pipe 42) and the mechanical structure are damaged due to overload. When the piston rod rises, the stored energy is released, and the hydraulic oil in the pressure storage bottle 22 is squeezed and pushed back into the breaker body 10 by the rebound force of the compressed air bag 221, shortening the time required for the piston rod to rise, and effectively realizing the energy-saving recovery and shock-absorbing functions of the breaker power.

10: Hammer body

11: Side panels

111: protrusion

12: Storage space

13: Piercing

14: First oil port

15: Second oil port

20: Accumulator

21: Clamp

21A: First Block

21B: Second seat

211: Room

22: Accumulator bottle

221: Airbag

30:Shock absorber

31: First shock absorbing unit

311: first fixing plate

312: Second fixing plate

313: First elastic body

32: Second shock absorbing unit

321: Third fixing plate

322: Fourth fixing plate

323: Second elastic body

40: Pipeline unit

41: Oil inlet pipe

411:Connector

42: Oil outlet pipe

The first figure is a three-dimensional diagram of the present invention. The second figure is a three-dimensional exploded diagram of the present invention. The third figure is a partial three-dimensional exploded diagram of the present invention. The fourth figure is another partial three-dimensional exploded diagram of the present invention. The fifth figure is a bottom plan view of the present invention. The sixth figure is a cross-sectional view of the fifth figure along the A-A line. The seventh figure is a side plan view of the present invention. The eighth figure is a cross-sectional view of the seventh figure along the B-B line. The ninth figure is a schematic diagram of the flow of hydraulic oil when the piston rod of the present invention falls. The tenth figure is a schematic diagram of the flow of hydraulic oil when the piston rod of the present invention falls. The eleventh figure is a schematic diagram of the flow of hydraulic oil when the piston rod of the present invention falls. The twelfth figure is a schematic diagram of the flow of hydraulic oil when the piston rod of the present invention rises. Figure 13 is the second schematic diagram of the hydraulic oil flow when the piston rod of the present invention rises. Figure 14 is the third schematic diagram of the hydraulic oil flow when the piston rod of the present invention rises.

10: Crushing hammer body

11: Side panels

111: protrusion

13: Piercing

14: First oil port

15: Second oil port

20: Accumulator

21: Clamp seat

30: Shock absorber

31: First shock absorbing unit

32: Second shock absorbing unit

40: Pipeline unit

41: Oil inlet pipe

42: Oil outlet pipe

Claims (8)

A power energy-saving recovery and shock-absorbing mechanism for a breaker hammer comprises: a breaker hammer body, provided with two side plates, each of the two side plates is provided with a protruding portion, and a receiving space is formed between the two protruding portions, a plunger extends downward from the bottom of the breaker hammer body, and the breaker hammer body is provided with a first oil port and a second oil port; at least one accumulator is arranged in the receiving space, and the accumulator comprises a clamping seat and a pressure storage bottle, and a receiving chamber is provided inside the clamping seat, and the pressure storage bottle is arranged in the receiving chamber, and the pressure storage bottle is arranged in the receiving chamber. The pressure accumulator bottle is provided with an air bag, in which gas is sealed; at least one shock absorbing device, which includes a first shock absorbing unit and a second shock absorbing unit, which are respectively installed between the accumulator and the two side plates; and a pipeline unit, which includes an oil inlet pipe and an oil outlet pipe, the oil inlet pipe is connected to the first oil port, the middle section of the oil inlet pipe is provided with at least one joint, the at least one joint is connected to the air bag of the at least one accumulator, and the oil outlet pipe is connected to the second oil port. As described in claim 1, the power energy recovery and shock absorption mechanism of a crushing hammer, wherein the first shock absorption unit comprises a first fixing plate, a second fixing plate and a first elastic body, the first elastic body is fixedly connected between the first fixing plate and the second fixing plate, the second shock absorption unit comprises a third fixing plate, a fourth fixing plate and a second elastic body, the second elastic body is fixedly connected between the third fixing plate and the fourth fixing plate, the first fixing plate and the third fixing plate are fixed to the two side plates respectively, the second fixing plate and the fourth fixing plate are fixed to each other, and clamp the accumulator. The hammer power energy recovery and shock absorption mechanism as described in claim 1, wherein the two side plates are fixed to each other. As described in claim 1, the hammer power energy recovery and shock absorption mechanism, wherein the clamp is composed of a first seat body and a second seat body. As described in claim 1, the hammer power energy recovery and shock absorption mechanism, wherein the gas sealed in the airbag is nitrogen. The hammer power energy recovery and shock absorption mechanism as described in claim 2, wherein the first elastic body and the second elastic body are rubber. The hammer power energy recovery and shock absorption mechanism as described in claim 2, wherein the first fixing plate, the second fixing plate, the third fixing plate and the fourth fixing plate are made of metal material. The hammer power energy recovery and shock absorption mechanism as described in claim 1, wherein the joint is a three-way joint.

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