CN210623259U - Oil cylinder of coal mine tunnel drilling machine - Google Patents
Oil cylinder of coal mine tunnel drilling machine Download PDFInfo
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- CN210623259U CN210623259U CN201921117935.2U CN201921117935U CN210623259U CN 210623259 U CN210623259 U CN 210623259U CN 201921117935 U CN201921117935 U CN 201921117935U CN 210623259 U CN210623259 U CN 210623259U
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Abstract
Oil cylinder of coal mine tunnel drilling machine. Relate to oil cylinder technical field, especially relate to a coal mine tunnel boring machine oil cylinder. Buffering is performed without depending on elastic potential energy, and the buffering effect is good. The hydraulic cylinder comprises a cylinder body and a piston arranged in the cylinder body, wherein a hollow piston rod is fixed on the piston, the piston is arranged in the middle of the cylinder body, a pair of oil inlets are formed in the cylinder body and are respectively arranged on two sides of the piston, the oil inlets are formed in the piston rod and are communicated with the piston cylinder and the cylinder body, hydraulic oil flows into the cylinder body through the piston cylinder, guide sleeves are arranged at two ends of the cylinder body, and buffering devices are arranged on the guide sleeves. The buffer device blocks the corresponding oil inlet in the sliding process of the cylinder body, so that a closed oil cavity is formed between the cylinder body and the guide sleeve, the oil in the oil cavity is compressed to generate a reaction force for buffering in the continuous sliding process of the cylinder body, the guide sleeve moving at high speed is prevented from colliding with the piston, the service time of the buffer device is long, and the buffer effect is good.
Description
Technical Field
The utility model relates to a hydro-cylinder technical field especially relates to a coal mine underground boring machine hydro-cylinder.
Background
The double-end oil cylinder is often used in the coal mining process, and advances the coal mine drilling machine forward, because the regulation precision is high, and the double-end oil cylinder needs often flexible action, therefore the uide bushing of double-end oil cylinder often strikes the piston of double-end oil cylinder, its loss accelerates, consequently need provide an effectual buffer and slow down the loss of piston and uide bushing, the utility model patent of an application number 201820164843.9 that national intellectual property office 2018-11-13 disclosed, wherein disclosed adopt about two-way elastic construction, realize the inside two-way buffering effect of hydro-cylinder. The inboard groove structure that is with the movable rod right side of hydro-cylinder piston rod, and the hydro-cylinder piston rod, expanding spring constitutes elastic construction with the movable rod combination, this structure plays the cushioning effect to the inside right side of hydro-cylinder, the buffering iron wire is semi-circular structure, and buffering iron wire quantity is eighteen, and the buffering iron wire becomes align to grid and distributes on the cushion sleeve, this structure plays the cushioning effect to the inside left side of hydro-cylinder, the oil inlet is hollow hemisphere structure, and the oil inlet radius is less than the oil inlet head radius, this structure makes the oil inlet wear the minimum when contacting with the oil inlet head, play the guard action, the oil inlet head is hemispherical structure, and the inlet port on oil inlet head surface becomes align to grid and distributes, when this structure ensures the oil inlet and contacts with the oil inlet head, inside entering into the oil inlet pipe that oil can be stable. That is to say this utility model patent has adopted the elastic potential energy of spring to cushion by nature, and long-time back of using, spring elastic potential energy weakens, and the buffering effect is not good.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model provides a do not rely on elastic potential energy to cushion, the effectual colliery gallery rig oil cylinder of buffering.
The utility model discloses a following technical scheme realizes: the coal mine underground drill rig oil cylinder comprises a cylinder body and a piston arranged in the cylinder body, wherein a hollow piston rod is fixed on the piston, the piston is arranged in the middle of the cylinder body, a pair of oil inlets are formed in the cylinder body and are respectively arranged on two sides of the piston, the oil inlets are formed in the piston rod and are communicated with the piston cylinder and the cylinder body, hydraulic oil flows into the cylinder body through the piston cylinder, guide sleeves are arranged at two ends of the cylinder body, and a buffer device is arranged on the guide sleeves.
The buffer device comprises a rubber blocking piece which is arranged on the guide sleeve and slides on the piston cylinder along with the cylinder body.
The distance between the end part of the rubber baffle and the oil inlet is smaller than the stroke of the oil cylinder.
The rubber catch comprises a transmission piece and a sealing piece, one end of the transmission piece is fixed with the guide sleeve, and the sealing piece is fixed at the other end of the transmission piece;
the sealing sheet is the same as the caliber of the oil inlet, an annular sealing groove is formed in the inner wall of the oil inlet, and a sealing strip matched with the annular sealing groove is arranged at the outer edge of the sealing sheet.
The buffer device comprises a push plate and a blocking cover, the push plate is fixed with the guide sleeve, a guide groove is formed in the piston rod, the blocking cover is arranged in the guide groove and slides in the guide groove, the push plate is driven by the guide sleeve to push the blocking cover to block the oil inlet, and a reset device used for resetting the blocking cover is arranged between the guide groove and the blocking cover.
The baffle cover comprises a short plate and a long plate which are fixedly connected in an L shape, the short plate extends out of the guide groove, the long plate slides in the guide groove, and the push plate pushes the short plate to drive the long plate to cover the oil inlet.
The reset device comprises at least one group of springs, one ends of the springs are fixed on the groove walls of the guide grooves, and the other ends of the springs are fixed on the short plates.
Compared with the prior art, the utility model discloses buffer blocks up corresponding oil inlet at the cylinder body slip in-process for form a confined oil pocket between cylinder body and the uide bushing, thereby the oil of oil intracavity is produced the reaction force and is used for the buffering by the compression in the cylinder body lasts the slip in-process, prevents that the uide bushing and the piston of high-speed motion from colliding, damages piston and uide bushing, thereby prolonged piston and uide bushing be with the life-span. And the buffer device utilizes liquid for buffering, has good buffer effect and quick response, avoids the defect that the elastic potential energy of the spring is weakened after the buffer time of the elastic potential energy of the spring is long, and has long service time and good buffer effect.
In the first embodiment, when the cylinder body slides towards one direction, the rubber baffle slides along with the cylinder body, the rubber baffle blocks the oil inlet before the cylinder body reaches the stroke end, so that a closed oil cavity is formed between the guide sleeve and the piston, at the moment, the cylinder body slides continuously, the oil cavity is reduced, oil in the oil cavity is compressed, a reaction force is generated, the cylinder body is decelerated, a buffering effect is achieved, the guide sleeve moving at a high speed is prevented from colliding with the piston, the piston and the guide sleeve are damaged, and the service life of the piston and the guide sleeve is prolonged.
In the second embodiment, when the cylinder body moves towards one direction, the push plate moves towards the blocking cover on the same side under the action of the guide sleeve to push the blocking cover to block the oil inlet to form a closed oil cavity to realize buffering, and the blocking cover resets under the action of the resetting device after the cylinder body resets. A closed oil cavity is formed between the guide sleeve and the piston, the cylinder body continuously slides at the moment, so that the oil cavity is reduced, oil in the oil cavity is compressed, a reaction force is generated, the cylinder body is decelerated, a buffering effect is achieved, the guide sleeve and the piston moving at a high speed are prevented from colliding, the piston and the guide sleeve are damaged, and the service life of the piston and the guide sleeve is prolonged. And the buffer device utilizes liquid for buffering, has good buffer effect and quick response, avoids the defect that the elastic potential energy of the spring is weakened after the buffer time of the elastic potential energy of the spring is long, and has long service time and good buffer effect.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a sectional view of the first embodiment of the present invention;
fig. 3 is a schematic structural view of the first embodiment of the present invention;
FIG. 4 is an enlarged schematic view of the structure at A in FIG. 3;
fig. 5 is a structural sectional view of a second embodiment of the present invention;
FIG. 6 is a schematic structural view of a second embodiment of the present invention
FIG. 7 is an enlarged view of the structure at B in FIG. 6;
in the figure: 1. a cylinder body; 2. a piston rod; 21. a rubber baffle plate; 211. a driving strap; 212. sealing the sheet; 22. pushing the plate; 23. a blocking cover; 24. a spring; 25. a guide groove; 3. a guide sleeve; 4. a piston; 5. and an oil inlet.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.
As shown in fig. 1, the oil cylinder of the gallery drilling machine comprises a cylinder body 1 and a piston 4 arranged in the cylinder body 1, wherein a hollow piston rod 2 is fixed on the piston 4, the piston 4 is arranged in the middle of the cylinder body 1, a pair of oil inlets 5 are arranged in the cylinder body 1, the pair of oil inlets 5 are respectively arranged at two sides of the piston 4, the oil inlets 5 are arranged on the piston rod 2 and are communicated with the piston 4 and the cylinder body 1, hydraulic oil flows into the cylinder body 1 through the piston 4, guide sleeves 3 are arranged at two ends of the cylinder body 1, and a buffer device is arranged on the guide sleeves 3. The buffer device blocks the corresponding oil inlet 5 during the sliding process of the cylinder body 1, so that a closed oil cavity is formed between the cylinder body 1 and the guide sleeve 3, the oil in the oil cavity is compressed to generate a reaction force for buffering during the continuous sliding process of the cylinder body 1, the guide sleeve 3 moving at high speed is prevented from colliding with the piston 4, the piston 4 and the guide sleeve 3 are prevented from being damaged, and the service life of the piston 4 and the guide sleeve 3 is prolonged. And the buffer device utilizes liquid for buffering, has good buffer effect and quick response, avoids the defect that the elastic potential energy of the spring 24 is weakened after the buffer time of the elastic potential energy of the spring 24 is long, and has long service life and good buffer effect.
As shown in fig. 2 to 4, according to a first embodiment of the present disclosure, the buffering device includes a rubber stopper 21, and the rubber stopper 21 is disposed on the guide sleeve 3 and slides on the piston 4 along with the cylinder body 1. The distance between the end part of the rubber baffle 21 and the oil inlet 5 is smaller than the stroke of the oil cylinder. When the cylinder body 1 slides towards one direction, the rubber baffle 21 slides along with the cylinder body 1, the rubber baffle 21 blocks the oil inlet 5 before the cylinder body 1 reaches the stroke end, so that a closed oil cavity is formed between the guide sleeve 3 and the piston 4, at the moment, the cylinder body 1 continuously slides, the oil cavity is reduced, oil in the oil cavity is compressed, a reaction force is generated, the cylinder body 1 is decelerated, a buffering effect is achieved, the guide sleeve 3 moving at a high speed is prevented from colliding with the piston 4, the piston 4 and the guide sleeve 3 are damaged, and the service life of the piston 4 and the guide sleeve 3 is prolonged. And the buffer device utilizes liquid for buffering, has good buffer effect and quick response, avoids the defect that the elastic potential energy of the spring 24 is weakened after the buffer time of the elastic potential energy of the spring 24 is long, and has long service life and good buffer effect.
The rubber catch 21 comprises a transmission piece 211 and a sealing piece 212, one end of the transmission piece 211 is fixed with the guide sleeve 3, and the sealing piece 212 is fixed at the other end of the transmission piece 211; the sealing plate 212 is the same as the caliber of the oil inlet 5, an annular sealing groove is formed in the inner wall of the oil inlet 5, and a sealing strip matched with the annular sealing groove is arranged at the outer edge of the sealing plate 212. In order to ensure the sealing effect, the sealing sheet 212 is not only made to be the same as the caliber of the oil inlet 5, but also clamped in the sealing groove during sealing, so that the sealing effect is guaranteed, and the sealing property of the oil cavity is better.
As shown in fig. 5-7, which is a second embodiment of the present disclosure, the buffering device includes a push plate 22 and a blocking cover 23, the push plate 22 is fixed to the guide sleeve 3, a guide groove 25 is disposed on the piston rod 2, the blocking cover 23 is disposed in the guide groove 25 and slides in the guide groove 25, the push plate 22 pushes the blocking cover 23 to block the oil inlet 5 under the driving of the guide sleeve 3, and a resetting device for resetting the blocking cover 23 is disposed between the guide groove 25 and the blocking cover 23. The resetting device comprises at least one group of springs 24, one end of each spring 24 is fixed on the groove wall of the corresponding guide groove 25, and the other end of each spring 24 is fixed on the corresponding short plate. When the cylinder body 1 moves towards one direction, the push plate 22 moves towards the blocking cover 23 on the same side under the action of the guide sleeve 3, the blocking cover 23 is pushed to block the oil inlet 5 to form a closed oil cavity, buffering is realized, and the blocking cover 23 resets under the action of the resetting device after the cylinder body 1 resets. A closed oil cavity is formed between the guide sleeve 3 and the piston 4, at the moment, the cylinder body 1 continuously slides, the oil cavity is reduced, oil in the oil cavity is compressed, a reaction force is generated, the cylinder body 1 is decelerated, a buffering effect is achieved, the guide sleeve 3 moving at a high speed is prevented from colliding with the piston 4, the piston 4 and the guide sleeve 3 are prevented from being damaged, and the service life of the piston 4 and the guide sleeve 3 is prolonged. And the buffer device utilizes liquid for buffering, has good buffer effect and quick response, avoids the defect that the elastic potential energy of the spring 24 is weakened after the buffer time of the elastic potential energy of the spring 24 is long, and has long service life and good buffer effect.
The baffle cover 23 comprises a short plate and a long plate which are fixedly connected in an L shape, the short plate extends out of the guide groove 25, the long plate slides in the guide groove 25, and the push plate 22 pushes the short plate to drive the long plate to cover the oil inlet 5.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.
Claims (7)
1. Colliery gallery rig hydro-cylinder, including the cylinder body, arrange the piston in the cylinder body in, fixed hollow piston rod on the piston, the piston is arranged in the cylinder body middle part, be equipped with a pair of oil inlet in the cylinder body, a pair of oil inlet branch is located the both sides of piston, the oil inlet is located communicate on the piston rod the piston cylinder with the cylinder body, hydraulic oil via the piston cylinder flows in the cylinder body, its characterized in that: the two ends of the cylinder body are provided with guide sleeves, and the guide sleeves are provided with buffer devices.
2. The coal mine tunnel boring machine oil cylinder according to claim 1, characterized in that: the buffer device comprises a rubber blocking piece which is arranged on the guide sleeve and slides on the piston cylinder along with the cylinder body.
3. The coal mine tunnel boring machine oil cylinder according to claim 2, characterized in that: the distance between the end part of the rubber baffle and the oil inlet is smaller than the stroke of the oil cylinder.
4. The coal mine underground drill oil cylinder according to claim 2 or 3, characterized in that: the rubber catch comprises a transmission piece and a sealing piece, one end of the transmission piece is fixed with the guide sleeve, and the sealing piece is fixed at the other end of the transmission piece;
the sealing sheet is the same as the caliber of the oil inlet, an annular sealing groove is formed in the inner wall of the oil inlet, and a sealing strip matched with the annular sealing groove is arranged at the outer edge of the sealing sheet.
5. The coal mine tunnel boring machine oil cylinder according to claim 1, characterized in that: the buffer device comprises a push plate and a blocking cover, the push plate is fixed with the guide sleeve, a guide groove is formed in the piston rod, the blocking cover is arranged in the guide groove and slides in the guide groove, the push plate is driven by the guide sleeve to push the blocking cover to block the oil inlet, and a reset device used for resetting the blocking cover is arranged between the guide groove and the blocking cover.
6. The coal mine tunnel boring machine oil cylinder according to claim 5, wherein: the baffle cover comprises a short plate and a long plate which are fixedly connected in an L shape, the short plate extends out of the guide groove, the long plate slides in the guide groove, and the push plate pushes the short plate to drive the long plate to cover the oil inlet.
7. The coal mine tunnel boring machine oil cylinder according to claim 6, wherein: the reset device comprises at least one group of springs, one ends of the springs are fixed on the groove walls of the guide grooves, and the other ends of the springs are fixed on the short plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921117935.2U CN210623259U (en) | 2019-07-16 | 2019-07-16 | Oil cylinder of coal mine tunnel drilling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921117935.2U CN210623259U (en) | 2019-07-16 | 2019-07-16 | Oil cylinder of coal mine tunnel drilling machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210623259U true CN210623259U (en) | 2020-05-26 |
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ID=70752835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921117935.2U Active CN210623259U (en) | 2019-07-16 | 2019-07-16 | Oil cylinder of coal mine tunnel drilling machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210623259U (en) |
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2019
- 2019-07-16 CN CN201921117935.2U patent/CN210623259U/en active Active
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