CN212715106U - Hydraulic breaking hammer with buffering function - Google Patents

Abstract

The utility model is suitable for a hydraulic breaking hammer buffering technical field, provides a hydraulic breaking hammer with buffer function, the seal membrane set up in go up the cylinder body inside, and be located the top of piston rod, the outer wall of seal membrane and the inner wall upper portion position fixed connection of going up the cylinder body, the seal membrane intussuseption is filled with nitrogen gas, the periphery wall upper portion position of going up the cylinder body is provided with the sealing washer, the piston rod can contact the seal membrane bottom and jack-up the seal membrane upwards and take place the deformation, the nitrogen gas of seal membrane intussuseption is compressed after the seal membrane is extruded, makes pressure increase, plays the effect of buffering, when the piston rod contacts the rubber block, the rubber block can be extruded and the dynamics when reducing the piston rod motion by a wide margin, the cooperation of several kinds of modes is used, the vibration that hydraulic breaking hammer produced during operation has greatly been reduced, the service life of the product is prolonged.

Description

Hydraulic breaking hammer with buffering function

Technical Field

The utility model belongs to the technical field of the hydraulic breaking hammer buffering, especially, relate to a hydraulic breaking hammer with buffer function.

Background

The hydraulic breaking hammer drives the piston to reciprocate by taking hydrostatic pressure as power, and the piston impacts a drill rod at high speed during stroke, so that ore or concrete and the like are broken by the drill rod.

The hydraulic breaking hammer used at present does not have a good buffer device, and when a piston stroke impacts a drill rod at a high speed, severe vibration is generated, so that a breaking hammer support is broken.

Under the prior art, the during operation, the nitrogen chamber provides power, and plays the cushioning effect, and the volume of nitrogen chamber is big more, and the cushioning effect is better, but is limited to the size restriction of back cylinder body among the prior art, and present nitrogen chamber's volume also receives the restriction, consequently can't change the problem of buffering on nitrogen chamber volume.

SUMMERY OF THE UTILITY MODEL

The utility model provides a hydraulic breaking hammer with buffer function aims at solving the technical problem who mentions in the above-mentioned background art.

The utility model discloses a realize like this, a hydraulic breaking hammer with buffer function, including cylinder body subassembly and buffer unit.

The cylinder body assembly comprises a cylinder body and a sealing cover, the cylinder body comprises a lower cylinder body, a middle cylinder body and an upper cylinder body, a drill rod is inserted into the lower cylinder body, one end of the drill rod penetrates through the bottom wall of the cylinder body and extends to the outside of the cylinder body, the middle cylinder body is located above the lower cylinder body, a piston rod is arranged in the middle cylinder body, one end of the piston rod penetrates through the bottom wall of the upper cylinder body and extends to the inside of the upper cylinder body, the sealing cover is fixedly connected to the upper surface of the cylinder body, and a groove is formed in the middle of the lower surface of the sealing cover.

Buffering subassembly includes seal membrane, block rubber and spring, the seal membrane set up in go up inside the cylinder body, and be located the top of piston rod, the outer wall of seal membrane with the inner wall upper portion fixed connection of going up the cylinder body, the packing has nitrogen gas in the seal membrane, the lower surface of sealed lid is provided with the spring, the top of spring with the lower fixed surface of sealed lid connects, the block rubber has been held in the spring, the one end of block rubber with recess fixed connection.

Preferably, the cross section of the sealing membrane is trapezoidal.

Preferably, the radial length of the rubber block is identical to the radial length of the piston rod.

Preferably, the sealing film is made of rubber.

Preferably, the lower cylinder, the middle cylinder, and the upper cylinder are arranged in a vertical direction inside the cylinder.

Preferably, the other end of the piston rod penetrates through the top wall of the lower cylinder and is disposed above the drill rod.

Preferably, a sealing ring is arranged at the upper part of the peripheral wall of the upper cylinder body, a side wall of the sealing ring is fixedly connected with the peripheral wall of the upper cylinder body, and the upper surface of the sealing ring is abutted to the lower surface of the sealing cover.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a hydraulic breaking hammer with buffer function, when promoting the piston rod upward movement through switching-over valve guide hydraulic pressure, the piston rod can contact the seal membrane bottom and take place deformation with the seal membrane jack-up that makes progress, the nitrogen gas of seal membrane intussuseption is compressed after the seal membrane is extrudeed, make pressure increase, play the effect of buffering, when the piston rod contacts the block rubber, the block rubber can be extruded and the dynamics when reducing the piston rod motion by a wide margin, the spring plays the effect that also plays the buffering simultaneously to the block rubber, the cooperation of several kinds of modes is used, very big reduction hydraulic breaking hammer is in the vibration that the during operation produced, protected the inner member not receive the damage, the life of product has been prolonged.

Drawings

Fig. 1 is a cross-sectional view of the present invention;

FIG. 2 is an enlarged view of the point A of the present invention;

in the figure: 1-cylinder assembly, 11-cylinder, 12-sealing cover, 121-groove, 13-lower cylinder, 131-drill rod, 14-middle cylinder, 141-piston rod, 15-upper cylinder, 2-buffer assembly, 21-sealing film, 22-rubber block, 23-sealing ring and 24-spring.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments, it is to be understood that the specific embodiments described herein are only used for explaining the present invention, and are not used for limiting the present invention.

Referring to fig. 1-2, the present invention provides a hydraulic breaking hammer with a buffering function, which includes a cylinder assembly 1 and a buffering assembly 2.

The cylinder body assembly 1 comprises a cylinder body 11 and a sealing cover 12, the cylinder body 11 comprises a lower cylinder body 13, a middle cylinder body 14 and an upper cylinder body 15, a drill rod 131 is inserted into the lower cylinder body 13, one end of the drill rod 131 penetrates through the bottom wall of the cylinder body 11 and extends to the outside of the cylinder body 11, the middle cylinder body 14 is located above the lower cylinder body 13, a piston rod 141 is arranged in the middle cylinder body 14, one end of the piston rod 141 penetrates through the bottom wall of the upper cylinder body 15 and extends to the inside of the upper cylinder body 15, the sealing cover 12 is fixedly connected to the upper surface of the cylinder body 11, and a groove 121 is formed in the middle of.

Buffer unit 2 includes sealing membrane 21, block rubber 22 and spring 24, sealing membrane 21 sets up inside last cylinder body 15, and is located piston rod 141's top, the outer wall of sealing membrane 21 and the inner wall upper portion position fixed connection of last cylinder body 15, the packing of sealing membrane 21 is filled with nitrogen gas, the lower surface of sealed lid 12 is provided with spring 24, the top of spring 24 and the lower surface fixed connection of sealed lid 12, the block rubber 22 has been held in the spring 24, the one end and the recess 121 fixed connection of block rubber 22.

In this embodiment, a user guides hydraulic pressure through the reversing valve to further push the piston rod 141 to move up and down in the middle cylinder 14, when the bottom of the piston rod 141 strikes the drill rod 131, the drill rod 131 crushes substances such as ore or concrete, when the top of the piston rod 141 contacts the bottom of the sealing membrane 21, the sealing membrane 21 is forced to deform upwards, so that nitrogen filled in the sealing membrane 21 is forced to compress, opposite thrust is applied to the piston rod 141, impact force of the piston rod 141 is reduced, and a buffering effect is achieved, when the piston rod 141 contacts the rubber block 22, the rubber block 22 deforms, and meanwhile the piston rod 141 is pushed to move downwards, so that impact force of the piston rod 141 is reduced, working elements inside are protected, and the service life is prolonged, the spring 24 is used for preventing the rubber block 22 from being squeezed to other positions, plays a limiting role, and also assists the rubber block 22 to play a buffering effect, the inner wall fixed connection of seal membrane 21 and last cylinder 15, when sealed lid 12 and cylinder 11 were closed, the unable leakage of nitrogen gas of packing in the seal membrane 21 went out, played the sealed effect of first layer, guaranteed that nitrogen gas can not leak when normal use, can not influence the normal use of this device.

Referring to fig. 1-2, further, the cross-section of the sealing film 21 is trapezoidal.

In this embodiment, the purpose that the cross section of the sealing membrane 21 is set as trapezoidal lies in that when the piston rod 141 extrudes the sealing membrane 21, nitrogen filled in the sealing membrane 21 can be uniformly extruded all around, so that the nitrogen is not fully extruded to one side and exceeds the bearing range of the sealing membrane 21, and the sealing membrane 21 is broken to cause the device not to work normally.

Referring to fig. 1-2, further, the radial length of the rubber block 22 is identical to the radial length of the piston rod 141.

In this embodiment, the effect that the radial length of the rubber block 22 and the radial length of the piston rod 141 are the same lies in the bottom that the top of the piston rod 141 can be fine contact with the rubber block 22, guaranteed that the rubber block 22 only upwards extrudes after the atress takes place deformation, can not cause because of the atress inequality results in the rubber block 22 to take place the extrusion to other directions, lead to the rubber block 22 to drop from the recess 121, can't play the buffering restriction to the hydraulic breaking hammer of during operation, influence the normal work of this device.

Referring to fig. 1-2, further, the sealing film 21 is made of rubber.

In the present embodiment, the rubber is a high elastic polymer material having reversible deformation, is elastic at room temperature, can generate large deformation under small external force, and can recover to the original shape after the external force is removed, so that the rubber block 22 and the sealing film 21 both adopt rubber as preferable materials because of its good elastic force, and can provide good elastic support without being damaged.

Referring to fig. 1, further, the lower cylinder 13, the middle cylinder 14, and the upper cylinder 15 are arranged in a vertical direction inside the cylinder 11.

In this embodiment, the lower cylinder 13, the middle cylinder 14 and the upper cylinder 15 are distributed in the vertical direction to ensure that the piston rod 141 can move in each cylinder without hindrance, and the working elements inside the cylinder 11 are not damaged, which results in the phenomenon of abnormal operation.

Referring to fig. 1, the other end of the piston rod 141 penetrates the top wall of the lower cylinder 13 and is disposed above the drill rod 131.

In this embodiment, the piston rod 141 is disposed above the drill rod 131, so that the piston rod 141 can transmit the impact force to the drill rod 131 more conveniently after being stressed, so that the drill rod 131 obtains a greater crushing force.

Referring to fig. 1, a sealing ring 23 is further disposed at an upper portion of an outer peripheral wall of the upper cylinder 15, a side wall of the sealing ring 23 is fixedly connected to the outer peripheral wall of the upper cylinder 15, and an upper surface of the sealing ring 23 abuts against a lower surface of the sealing cover 12.

In the present embodiment, the upper surface of the seal ring 23 and the lower surface of the seal cap 12 are in contact with each other to prevent leakage of nitrogen gas from the gap, thereby achieving a second layer of sealing effect.

The utility model discloses a theory of operation and use flow: the utility model discloses install the back, the user passes through switching-over valve control hydraulic drive piston rod 141 at the inside up-and-down motion of well cylinder 14, when piston rod 141 goes up, piston rod 141 top can contact seal membrane 21 and extrude seal membrane 21, the nitrogen gas of packing in the seal membrane 21 receives can compress after the extrusion, exert opposite thrust to piston rod 141, reduce piston rod 141's impact, play the effect of buffering, spring compression behind piston rod 141's top contact spring, and make piston rod 141's top contact the bottom of rubber block 22, rubber block 22 receives the impact force that also reduces piston rod 141 after the extrusion, several kinds of buffer's cooperation is used, can reduce hydraulic breaking hammer in piston rod 141 at the impact force that the during operation produced by a wide margin, protect the internal work component not damaged, prolong hydraulic breaking hammer's life.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (7)

1. The utility model provides a hydraulic pressure quartering hammer with buffer function which characterized in that: comprises a cylinder body component (1) and a buffer component (2);

the cylinder body assembly (1) comprises a cylinder body (11) and a sealing cover (12), the cylinder body (11) comprises a lower cylinder body (13), a middle cylinder body (14) and an upper cylinder body (15), a drill rod (131) is inserted into the lower cylinder body (13), one end of the drill rod (131) penetrates through the bottom wall of the cylinder body (11) and extends to the outside of the cylinder body (11), the middle cylinder body (14) is positioned above the lower cylinder body (13), a piston rod (141) is arranged in the middle cylinder body (14), one end of the piston rod (141) penetrates through the bottom wall of the upper cylinder body (15) and extends to the inside of the upper cylinder body (15), the sealing cover (12) is fixedly connected to the upper surface of the cylinder body (11), and a groove (121) is formed in the middle position of the lower surface of the sealing cover (12);

buffer unit (2) include seal membrane (21), block rubber (22) and spring (24), seal membrane (21) set up in go up inside cylinder body (15), and be located the top of piston rod (141), the outer wall of seal membrane (21) with the inner wall upper portion position fixed connection of going up cylinder body (15), seal membrane (21) intussuseption is filled with nitrogen gas, the lower surface of sealed lid (12) is provided with spring (24), the top of spring (24) with the lower fixed connection of sealed lid (12), it has block rubber (22) to hold in spring (24), the one end of block rubber (22) with recess (121) fixed connection.

2. The hydraulic breaking hammer with the buffering function according to claim 1, wherein: the cross section of the sealing membrane (21) is trapezoidal.

3. The hydraulic breaking hammer with the buffering function according to claim 1, wherein: the radial length of the rubber block (22) is consistent with the radial length of the piston rod (141).

4. The hydraulic breaking hammer with the buffering function according to claim 1, wherein: the sealing film (21) is made of rubber.

5. The hydraulic breaking hammer with the buffering function according to claim 1, wherein: the lower cylinder (13), the middle cylinder (14) and the upper cylinder (15) are arranged in a vertical direction inside the cylinder (11).

6. The hydraulic breaking hammer with the buffering function according to claim 1, wherein: the other end of the piston rod (141) penetrates through the top wall of the lower cylinder body (13) and is arranged above the drill rod (131).

7. The hydraulic breaking hammer with the buffering function according to claim 1, wherein: go up the periphery wall upper portion position of cylinder body (15) and be provided with sealing washer (23), a lateral wall of sealing washer (23) with the periphery wall fixed connection of going up cylinder body (15), the upper surface of sealing washer (23) with the lower surface butt of sealed lid (12).

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