CN211851878U - Hydraulic support tail beam jack - Google Patents
Hydraulic support tail beam jack Download PDFInfo
- Publication number
- CN211851878U CN211851878U CN201922254142.1U CN201922254142U CN211851878U CN 211851878 U CN211851878 U CN 211851878U CN 201922254142 U CN201922254142 U CN 201922254142U CN 211851878 U CN211851878 U CN 211851878U
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- CN
- China
- Prior art keywords
- cylinder
- hydraulic support
- piston rod
- rotating shaft
- support tail
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 239000007788 liquid Substances 0.000 claims abstract description 9
- 238000007789 sealing Methods 0.000 claims description 5
- 238000005192 partition Methods 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims 1
- 239000003245 coal Substances 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000005065 mining Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 12
- 239000010720 hydraulic oil Substances 0.000 description 10
- 206010066054 Dysmorphism Diseases 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model belongs to the technical field of coal mining apparatus, especially, hydraulic support tail boom jack, inconvenient free shrinkage of piston rod is adjusted in to current hydraulic support tail boom jack, the structure is not reliable enough, the problem that the fault rate is high, the following scheme is proposed now, it includes cylinder and piston rod, piston rod sliding seal connects in the cylinder, the outside bottom fixedly connected with hydro-cylinder of cylinder, the inboard of hydro-cylinder has set gradually the piston board from a left side to the right side, the apparatus further comprises a rotating shaft, baffle and adjusting screw, piston board sliding seal connects in the hydro-cylinder, the fixed eccentric wheel that has cup jointed in the outside of pivot, the outside of eccentric wheel and one side roll connection of piston board, the inboard of baffle is provided with first check valve, the liquid circulation direction of first check valve is from a right side to a left side. The utility model has the advantages of reasonable design, can freely adjust piston rod's extension length, perhaps shrink piston rod, low in manufacturing cost, simple structure is reliable, and is not fragile, does benefit to the use.
Description
Technical Field
The utility model relates to a coal mining apparatus technical field especially relates to a hydraulic support tail beam jack.
Background
At present, hydraulic supports used for a coal face are all of external liquid inlet structures, namely hydraulic valves of tail beam jacks are placed at other places, and then the hydraulic valves are communicated with inner cavities of cylinders of the tail beam jacks through rubber pipes, so that the structure not only increases the usage amount of the rubber pipes, but also the rubber pipes are easily damaged in severe underground environments, and maintenance cost is increased. Through retrieval, the Chinese patent with the publication number of CN207332925U discloses a hydraulic support tail beam jack, which comprises a cylinder barrel and a piston rod; a liquid channel communicated with the inner cavity of the cylinder barrel is arranged in the piston rod, extends to the end part close to the piston rod and is communicated with a hydraulic valve arranged on the piston rod in a sealing way; the outer peripheral surface of the cylinder barrel is provided with a pipe interface which is communicated with the safety valve in a sealing way. The rubber tube of the tail beam jack of the existing external oil delivery hydraulic support is easy to damage, and the problem that the pressure cannot be let to be pressed when the pressure exceeds the set bearing capacity is solved.
But the above-mentioned design still has the shortcoming, and the inconvenient free shrink of piston rod is adjusted in the hydraulic support tail boom jack of above-mentioned patent design, and the structure is reasonable enough, reliable, and the fault rate is high, is unfavorable for the use, therefore we have proposed a hydraulic support tail boom jack and have been used for solving above-mentioned problem.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defects of inconvenient free contraction regulation of a piston rod, unreliable structure and high failure rate in the existing hydraulic support tail beam jack, and providing the hydraulic support tail beam jack.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a hydraulic support tail boom jack, includes cylinder and piston rod, piston rod sliding seal connects in the cylinder, the outside bottom fixedly connected with hydro-cylinder of cylinder, the inboard of hydro-cylinder has set gradually piston plate, pivot, baffle and adjusting screw from a left side to the right side, piston plate sliding seal connects in the hydro-cylinder, the fixed eccentric wheel that has cup jointed in the outside of pivot, the outside of eccentric wheel and one side roll connection of piston plate, the inboard of baffle is provided with first check valve, and the liquid circulation direction of first check valve is for following a right side to a left side, top one side of hydro-cylinder is linked together with the inside of cylinder, same screw hole has been seted up with the bottom of cylinder to the top opposite side of hydro-cylinder, adjusting screw's top extend to in the screw hole and with screw hole threaded connection.
Preferably, the same second check valve is arranged between one side of the top of the oil cylinder and the cylinder barrel, and the liquid flowing direction of the second check valve is from bottom to top, so that hydraulic oil in the cylinder barrel cannot directly flow back into the oil cylinder.
Preferably, one side of the piston plate is arranged to be of a circular truncated cone structure, the other side of the piston plate is fixedly connected with one end of a spring, and the other end of the spring is fixedly connected to the inner wall of the oil cylinder, so that the piston plate can reset.
Preferably, the bottom of pivot extends to the outside of hydro-cylinder and fixedly connected with rocker, adjusting screw's bottom extends to the below of hydro-cylinder, conveniently controls rocker and adjusting screw.
Preferably, the inside top and the inside bottom of hydro-cylinder have seted up pivot groove and pivot hole respectively, and pivot groove and pivot hole all rotate with the pivot and be connected for the pivot is steady rotatory.
The utility model discloses a hydraulic support tail boom jack, through getting off adjusting screw from the hydro-cylinder top spin, inject hydraulic oil into cylinder and hydro-cylinder, screw adjusting screw in the threaded hole again, drive pivot and eccentric wheel rotation through rocking the rocker, roll and extrude the piston plate and move to the left side in one side of piston plate when the long axial plane of eccentric wheel is rotatory, the piston plate moves to the left side and pushes away the hydraulic oil in the hydro-cylinder and extrudees the spring, when the long axial plane of eccentric wheel rotated to separate with the piston plate, the piston plate resets to the right side under the spring force effect of spring;
the hydraulic support tail beam jack provided by the utility model has the advantages that the piston plate can be repeatedly moved left and right through the rotation of the eccentric wheel, hydraulic oil can be gradually pushed into the cylinder barrel, the piston rod can be extended, the adjusting screw rod is rotated to separate the adjusting screw rod from the threaded hole, the hydraulic oil in the cylinder barrel can flow back into the oil cylinder, and the piston rod can be contracted;
the utility model has the advantages of reasonable design, can freely adjust piston rod's extension length, perhaps shrink piston rod, low in manufacturing cost, simple structure is reliable, and is not fragile, does benefit to the use.
Drawings
Fig. 1 is a schematic structural view of a tail beam jack of a hydraulic support provided by the present invention;
fig. 2 is the structural schematic diagram of a part a of the hydraulic support tail beam jack provided by the utility model.
In the figure: 1. a cylinder barrel; 2. a piston rod; 3. an oil cylinder; 4. a piston plate; 5. a rotating shaft; 6. a partition plate; 7. adjusting the screw rod; 8. an eccentric wheel; 9. a rocker; 10. a spring; 11. a second one-way valve; 12. a first check valve; 13. a threaded bore.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to fig. 1-2, a hydraulic support tail beam jack comprises a cylinder barrel 1 and a piston rod 2, the piston rod 2 is connected in the cylinder barrel 1 in a sliding and sealing manner, the bottom of the outer side of the cylinder barrel 1 is fixedly connected with an oil cylinder 3, the inner side of the oil cylinder 3 is sequentially provided with a piston plate 4 and a rotating shaft 5 from left to right, baffle 6 and adjusting screw 7, piston plate 4 sliding seal connects in hydro-cylinder 3, eccentric wheel 8 has been cup jointed to the outside of pivot 5 is fixed, eccentric wheel 8's the outside and one side roll connection of piston plate 4, baffle 6's inboard is provided with first check valve 12, the liquid circulation direction of first check valve 12 is for from right side to left side, top one side and the inside of cylinder 1 of hydro-cylinder 3 are linked together, same screw hole 13 has been seted up to the top opposite side of hydro-cylinder 3 and the bottom of cylinder 1, adjusting screw 7's top extend to in the screw hole 13 and with screw hole 13 threaded connection.
The utility model discloses in, be provided with same second check valve 11 between top one side of hydro-cylinder 3 and the cylinder 1, and the liquid circulation direction of second check valve 11 is supreme from down for hydraulic oil can not directly flow back in the hydro-cylinder 3 in the cylinder 1.
The utility model discloses in, one side of piston plate 4 sets up to round platform type structure, and the opposite side fixedly connected with spring 10's of piston plate 4 one end, and spring 10's other end fixed connection is on the inner wall of hydro-cylinder 3 for piston plate 4 can reset.
The utility model discloses in, the bottom of pivot 5 extends to the outside of hydro-cylinder 3 and fixedly connected with rocker 9, and adjusting screw 7's bottom extends to the below of hydro-cylinder 3, conveniently controls rocker 9 and adjusting screw 7.
The utility model discloses in, pivot groove and pivot hole have been seted up respectively to the inboard top of hydro-cylinder 3 and inboard bottom, and pivot groove and pivot hole all rotate with pivot 5 and be connected for pivot 5 steadily rotates.
In the utility model, when in use, the adjusting screw 7 is screwed down from the oil cylinder 3, then hydraulic oil is injected into the cylinder barrel 1 and the oil cylinder 3, then the adjusting screw 7 is screwed into the threaded hole 13 again, the rocker 9 is shaken, the rocker 9 drives the rotating shaft 5 and the eccentric wheel 8 to rotate, when the eccentric wheel 8 rotates, the long shaft surface rolls at one side of the piston plate 4 and extrudes the piston plate 4 to move towards the left side, the piston plate 4 moves towards the left side to push the hydraulic oil in the oil cylinder 3 into the cylinder barrel 1 and extrude the spring 10, when the long shaft surface of the eccentric wheel 8 rotates to be separated from the piston plate 4, the piston plate 4 resets towards the right side under the elastic force of the spring 10, when the eccentric wheel 8 continuously rotates, the piston plate 4 can repeatedly move left and right, the hydraulic oil can be gradually pushed into the cylinder barrel 1, the piston rod 2 can stretch out, the adjusting screw 7 is rotated to separate the adjusting, at this time, the hydraulic oil in the cylinder 1 can flow back to the oil cylinder 3, and the piston rod 2 can be contracted.
The utility model discloses the standard part that uses all can purchase from the market, and dysmorphism piece all can be customized according to the description with the record of drawing of description, and the concrete connection mode of each part all adopts conventional means such as ripe bolt, rivet, welding among the prior art, and machinery, part and equipment all adopt prior art, and conventional model, including circuit connection adopts conventional connection mode among the prior art, does not detailed here again.
Claims (5)
1. The hydraulic support tail beam jack comprises a cylinder barrel (1) and a piston rod (2), wherein the piston rod (2) is connected in the cylinder barrel (1) in a sliding and sealing manner, and is characterized in that an oil cylinder (3) is fixedly connected to the bottom of the outer side of the cylinder barrel (1), a piston plate (4), a rotating shaft (5), a partition plate (6) and an adjusting screw rod (7) are sequentially arranged on the inner side of the oil cylinder (3) from left to right, the piston plate (4) is connected in the oil cylinder (3) in a sliding and sealing manner, an eccentric wheel (8) is fixedly sleeved on the outer side of the rotating shaft (5), the outer side of the eccentric wheel (8) is in rolling connection with one side of the piston plate (4), a first check valve (12) is arranged on the inner side of the partition plate (6), the liquid flowing direction of the first check valve (12) is from right to left, one side of the top of the oil, the other side of the top of the oil cylinder (3) and the bottom of the cylinder barrel (1) are provided with the same threaded hole (13), and the top end of the adjusting screw rod (7) extends into the threaded hole (13) and is in threaded connection with the threaded hole (13).
2. The hydraulic support tail beam jack as claimed in claim 1, wherein a same second one-way valve (11) is arranged between one side of the top of the oil cylinder (3) and the cylinder barrel (1), and the liquid flowing direction of the second one-way valve (11) is from bottom to top.
3. The hydraulic support tail beam jack as claimed in claim 1, wherein one side of the piston plate (4) is arranged to be a circular truncated cone structure, the other side of the piston plate (4) is fixedly connected with one end of a spring (10), and the other end of the spring (10) is fixedly connected to the inner wall of the oil cylinder (3).
4. The hydraulic support tail beam jack as claimed in claim 1, wherein the bottom end of the rotating shaft (5) extends to the outer side of the oil cylinder (3) and is fixedly connected with a rocker (9), and the bottom end of the adjusting screw rod (7) extends to the lower part of the oil cylinder (3).
5. The hydraulic support tail beam jack as claimed in claim 1, wherein the inside top and the inside bottom of the cylinder (3) are respectively provided with a rotating shaft groove and a rotating shaft hole, and the rotating shaft groove and the rotating shaft hole are rotatably connected with the rotating shaft (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922254142.1U CN211851878U (en) | 2019-12-16 | 2019-12-16 | Hydraulic support tail beam jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922254142.1U CN211851878U (en) | 2019-12-16 | 2019-12-16 | Hydraulic support tail beam jack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211851878U true CN211851878U (en) | 2020-11-03 |
Family
ID=73215153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922254142.1U Expired - Fee Related CN211851878U (en) | 2019-12-16 | 2019-12-16 | Hydraulic support tail beam jack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211851878U (en) |
-
2019
- 2019-12-16 CN CN201922254142.1U patent/CN211851878U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201103 |