CN110966028A - Universal anchor returning device for working face - Google Patents
Universal anchor returning device for working face Download PDFInfo
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- CN110966028A CN110966028A CN201911353514.4A CN201911353514A CN110966028A CN 110966028 A CN110966028 A CN 110966028A CN 201911353514 A CN201911353514 A CN 201911353514A CN 110966028 A CN110966028 A CN 110966028A
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- 230000001360 synchronised effect Effects 0.000 claims abstract description 47
- 230000003028 elevating effect Effects 0.000 claims abstract description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000003638 chemical reducing agent Substances 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 3
- 238000011084 recovery Methods 0.000 abstract description 10
- 238000005065 mining Methods 0.000 abstract description 3
- 230000033001 locomotion Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000002457 bidirectional effect Effects 0.000 description 4
- 230000006978 adaptation Effects 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 208000012260 Accidental injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
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- Mining & Mineral Resources (AREA)
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- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to the technical field of mining anchor rod recovery, in particular to a universal anchor recovery device for a working face, which comprises a base fixedly connected with an external reversed loader through bolts, and a bearing machine shell fixedly arranged on the base, wherein a universal rotary mechanism is arranged in the bearing machine shell, a lifting adjusting anchor recovery component is arranged at the top of the bearing machine shell, and the lower end of the lifting adjusting anchor recovery component extends downwards onto the universal rotary mechanism through an open space at the top of the bearing machine shell and is matched with the universal rotary mechanism. But this device integral erection uses on the elevating conveyor also can install the use alone, can adjust the lift of synchronous lift hydro-cylinder group according to the position of tunnel stock when using this device to carry out the stock and retrieve, realizes the regulation of height position, drives the angle that synchronous lift hydro-cylinder group is rotatory to suitable work through controlling universal rotation mechanism, controls the handle through the control and adjusts from top to bottom and drive the suitable angle of anchor oil cylinder slope of pulling of its front end.
Description
Technical Field
The invention relates to the technical field of mining anchor rod recovery, in particular to a working face universal anchor rod recovery device.
Background
The anchor rod is commonly used in underground coal mines, serves as the most basic component of roadway support, and reinforces the surrounding rocks of the roadway together, so that the surrounding rocks support themselves, and is not only used for mines, but also used in engineering technology for carrying out main body reinforcement on side slopes, tunnels and dam bodies.
The anchor rod is used as a tension member penetrating into the stratum, one end of the anchor rod is connected with an engineering structure, the other end of the anchor rod penetrates into the stratum, the whole anchor rod is divided into a free section and an anchoring section, the free section is an area for transmitting the tension at the head of the anchor rod to an anchoring body, and the anchor rod is used for applying prestress to the anchor rod.
Need go back the anchor utilization with the stock after coal mining finishes, mostly adopt the mode of pure artifical manually operation to pull out the stock when returning the anchor operation now, this kind returns the anchor mode and makes staff's powerful, the operating efficiency low, and retrieves the easy accidental injury that causes back anchor personnel of stock in-process, and the operation potential safety hazard is great.
Disclosure of Invention
The technical scheme adopted by the invention for solving one of the technical problems is as follows: the universal anchor device that returns of working face includes the base that links firmly through bolt and outside elevating conveyor, the bearing casing of fixed mounting on the base bearing casing internally mounted has universal rotation mechanism the top of bearing casing is equipped with lift adjustment and returns the anchor subassembly, lift adjustment returns the open space at anchor subassembly lower extreme through bearing casing top and extends downwards on the universal rotation mechanism and rather than realizing the cooperation, lift adjustment returns the front end of anchor subassembly and installs and lock the solenoid with stock matched with, lift adjustment returns the anchor subassembly and is used for adjusting the angle that is with the stock.
The main purpose of setting up universal rotation mechanism is to realize rotation angle's regulation to the recovery operation of the stock of adaptation different position angles department, and the lift adjustment returns the anchor subassembly and mainly can adjust the pulling force angle when contacting with the stock, guarantees that pulling force and the stock of waiting to pull out are in suitable angle, conveniently retrieves, places the production at pulling force dead angle.
The device can be integrally installed on a reversed loader for use or independently installed for use, when the device is used for recovering the anchor rod, the lifting of the synchronous lifting oil cylinder group can be adjusted according to the position of the roadway anchor rod, so that the synchronous lifting oil cylinder group reaches a designated position and then keeps in-situ oil supply, at the moment, the control on the steering of the servo drive motor is realized by controlling the two-way switch by an operator, so that the driven gear drives the driving gear to finally drive the synchronous lifting oil cylinder group to rotate to a proper working angle, the angle is kept to be positioned, the control handle is continuously controlled to adjust up and down to drive the anchor pulling oil cylinder at the front end to incline to a proper angle, the front end of the piston rod of the anchor pulling oil cylinder extends out, the locking solenoid at the front end of the piston rod is fastened with the end part of the anchor rod to be recovered, the piston rod of the anchor pulling oil cylinder is controlled to retract at the moment, the anchor rod can be pulled out, and therefore the anchor rod is recovered in a labor-saving mode.
Preferably, the lifting adjusting anchor returning component comprises two synchronous lifting oil cylinders which are parallel to each other and are vertically arranged, the two synchronous lifting oil cylinders form a synchronous lifting oil cylinder group, connecting lug rings are fixedly installed at the tops of piston rods of the two synchronous lifting oil cylinders, an anchor pulling oil cylinder is arranged between the two connecting lug rings, a rotating seat is fixedly installed on a cylinder barrel of the anchor pulling oil cylinder, the rotating seat is inserted into a rotating hole of the connecting lug ring at a corresponding position through a pin shaft which is symmetrically and fixedly connected with two sides of the rotating seat, a control handle is fixedly connected with the rear end of the cylinder barrel of the anchor pulling oil cylinder, a tensile lug ring is fixedly connected with the end part of the piston rod of the anchor pulling oil cylinder, a steel wire rope is bound on the tensile lug ring, a locking screwed pipe which is fixedly connected with the outer end part of the anchor rod is fixedly connected with the working end of the steel wire rope, and the bottoms of the cylinder barrels of the two synchronous lifting oil cylinders are fixedly installed on, and each oil cylinder is connected with a hydraulic pump station on the external reversed loader.
The main purpose of fixing the two sides of the cylinder barrel of the anchor pulling oil cylinder is to ensure the stability of stress support of the anchor pulling oil cylinder, two pairs of piston rods on the synchronous lifting oil cylinder group can effectively play a role of hinging and fixing the two sides of the cylinder barrel of the anchor pulling oil cylinder, in addition, the synchronous lifting oil cylinder group can follow the driven gear to realize rotation without relative rotation, the structure of the two piston rods of the single piston designed here can ensure the identity of the single-cylinder double-rod synchronous motion while ensuring the limit, and the relative double-rod is more stable and simple in synchronous control and oil supply control, so that the risk of piston inclination cylinder pulling caused by the asynchronous double-rod is reduced, and the stability of operation is ensured.
Preferably, the distal end of the manipulation handle is provided in a hook-type bent shape.
The operation is convenient for the operator to grasp by hand.
Preferably, universal rotation mechanism includes the driven gear that the level was placed, driven gear sets up in the cavity of bearing casing and cup joint each other with vertical fixed driven fixed axle in the cavity vertically link firmly in the rear end cavity of driven fixed axle and be equipped with the initiative fixed axle cup joint on the lateral wall of initiative fixed axle with driven gear engaged with drive gear top fixed mounting has the servo drive motor who takes the speed reducer in the cavity of bearing casing fixed mounting has the revolving axle on servo drive motor's the motor shaft, the bottom of bearing casing with driven gear's top center links firmly mutually the top rear end of bearing casing is close to control one side of handle and install the two-way switch that control servo drive motor realized just reversing.
The servo driving motor adopts the existing servo motor with a controller, so that bidirectional rotation can be realized, the angle can be adjusted more stably and accurately through the speed reduction of the speed reducer, and the over-rotation of the rotating speed is prevented; meanwhile, the electric control rotation can play a role in saving power.
Preferably, a plurality of guiding and supporting balls are movably clamped in each clamping groove at the bottom of the driven gear and the driving gear, and the bottom of each guiding and supporting ball is abutted against the bottom of the cavity of the supporting machine shell.
When driven gear and drive gear rotate, for the frictional force of the bottom butt of the cavity of reducing its rotatory in-process and bearing casing, the direction bearing ball that sets up here can play the effect of direction bearing, reduces the running resistance.
Preferably, the rotating seat is installed on the outer side wall of the front section of the cylinder barrel of the anchor pulling cylinder.
The rotation point is arranged at the front end, so that the lever labor-saving principle is mainly considered, and the difficulty of operation and control of workers can be effectively reduced.
Preferably, the cylinder barrels of the two synchronous lifting cylinders are of an integrally formed single-cylinder double-rod structure.
Preferably, the synchronous lifting oil cylinder group comprises a vertically arranged vertical cylinder, a lifting piston is installed in the vertical cylinder, the upper end of a main piston rod penetrates through the lifting piston, an auxiliary disc is integrally formed at the top of the main piston rod, two vertically arranged auxiliary piston rods are symmetrically installed at the top of the auxiliary disc respectively, and the tops of the two auxiliary piston rods penetrate through an end cover at the top end of the vertical cylinder in a sealing mode and extend to the position above the top of the bearing casing.
When controlling the lift of whole synchronous lift cylinder group, only need the motion of a lift piston of control to realize, synchronous motion can be guaranteed to two pairs of piston rods at the in-process that goes up and down, control is convenient simple, need not to consider many ports fuel feeding problem, whole synchronous stability is higher, simultaneously owing to there are two pairs of piston rods can effectually play its problem of following the lift piston rotation, thereby can guarantee its synchronous uniformity when following the drive gear rotation, guarantee to adjust rotation angle's stability and accuracy.
The invention has the beneficial effects that: but this device integral erection uses on the elevating conveyor also can install the use alone, can adjust the lift of synchronous lift cylinder group according to the position of locating of tunnel stock when using this device to carry out the stock and retrieve, realize the regulation of height position, drive the angle of synchronous lift cylinder group rotation to suitable work through controlling universal rotation mechanism, control the handle and adjust the suitable angle of anchor hydro-cylinder slope that draws that drives its front end from top to bottom through control, and control and draw the anchor hydro-cylinder and pull out the stock, laborsaving recovery stock can be realized in the cooperation of whole device, the operation is safe, high-efficient.
Drawings
In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or components are generally identified by like reference numerals. In the drawings, elements or components are not necessarily drawn to scale.
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a schematic front view of the present invention.
Fig. 3 is a schematic top view of the present invention.
Fig. 4 is a schematic view of the present invention shown in fig. 2 with the front plate of the support housing and a portion of the housing of the vertical cylinder removed.
In the figure, 1, bolt; 2. A base; 3. supporting the shell; 4. An open space; 5. Locking the solenoid; 6. an anchor rod; 8. synchronously lifting the oil cylinder group; 81. a vertical cylinder barrel; 82. a lift piston; 83. a main piston rod; 84. an auxiliary disc; 85. an auxiliary piston rod; 9. connecting an earring; 10. an anchor pulling oil cylinder; 11. a rotating seat; 12. a latch shaft; 13. a control handle; 14. a tensile earring; 15. a wire rope; 17. A driven gear; 18. a driven fixed shaft; 19. a driving fixed shaft; 20. a drive gear; 21. a servo drive motor; 22. a rotating shaft; 23. a bidirectional switch.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
As shown in fig. 1-4, the universal anchor device that returns of working face includes base 2 that links firmly with outside elevating conveyor through bolt 1, bearing casing 3 of fixed mounting on base 2 bearing casing 3 internally mounted has universal rotation mechanism bearing casing 3 internally mounted is equipped with lift adjustment back anchor subassembly at the top of bearing casing 3, the lower extreme that the anchor subassembly was returned in lift adjustment extends downwards through open space 4 at bearing casing 3 top on the universal rotation mechanism and rather than realizing the cooperation, lift adjustment back anchor subassembly's front end is installed and is returned with stock 6 matched with locking screwed pipe 5, lift adjustment back anchor subassembly is used for adjusting and is the angle with stock 6.
The main purpose of setting up universal rotation mechanism is to realize rotation angle's regulation to the recovery operation of the stock 6 of adaptation different position angles department, and the lift adjustment returns the anchor subassembly and mainly can adjust the pulling force angle when contacting with stock 6, guarantees that pulling force and the stock 6 of waiting to pull out are in suitable angle, conveniently retrieves, places the production at pulling force dead angle.
Preferably, the lifting adjusting anchor returning component comprises two synchronous lifting oil cylinders which are parallel to each other and are vertically arranged, the two synchronous lifting oil cylinders 8 form a synchronous lifting oil cylinder group 8, connecting lug rings 9 are fixedly installed at the tops of piston rods of the two synchronous lifting oil cylinders, an anchor pulling oil cylinder 10 is arranged between the two connecting lug rings 9, a rotating seat 11 is fixedly installed on a cylinder barrel of the anchor pulling oil cylinder 10, the rotating seat 11 is inserted into a rotating hole of the connecting lug ring 9 at a corresponding position through a pin shaft 12 which is symmetrically and fixedly connected with two sides of the rotating seat 11, an operating handle 13 is fixedly connected with the rear end of the cylinder barrel of the anchor pulling oil cylinder 10, a tensile lug ring 14 is fixedly connected with the end part of the piston rod of the anchor pulling oil cylinder 10, a steel wire rope 15 is bound on the tensile lug ring 14, a locking screw pipe 5 which is fixedly connected with the outer end part of the anchor rod 6 in a screwing and fastening manner is fixedly connected with the working end part of, and the bottoms of the cylinder barrels of the synchronous lifting oil cylinders are fixedly arranged on the universal swing mechanism, and the oil cylinders are connected with hydraulic pump stations on an external reversed loader.
The main purpose of fixing both sides of the cylinder barrel of the anchor pulling cylinder 10 is to ensure the stability of stress support, two pairs of piston rods 85 on the synchronous lifting cylinder group 8 can effectively play the role of hinging and fixing both sides of the cylinder barrel of the anchor pulling cylinder 10, in addition, the synchronous lifting cylinder group 8 can follow the driven gear 17 to realize rotation without relative rotation, the structure of the two piston rods of the single piston designed here can ensure the identity of single-cylinder double-rod synchronous motion, relative double-rod is more stable and simple in synchronous control and oil supply control, the risk of piston inclination cylinder pulling caused by asynchronous double-rod is reduced, and the stability of operation is ensured.
Preferably, the end of the manipulating handle 13 is provided in a hook-type bent shape.
The operation is convenient for the operator to grasp by hand.
Preferably, the universal swing mechanism comprises a horizontally placed driven gear 17, the driven gear 17 is arranged in the cavity of the bearing machine shell 3 and is mutually sleeved with a driven fixed shaft 18 vertically fixed in the cavity, a driving fixed shaft 19 is vertically and fixedly connected in the cavity at the rear end of the driven fixed shaft 18, a driving gear 20 meshed with the driven gear 17 is sleeved on the outer side wall of the driving fixed shaft 19, a servo driving motor 21 with a speed reducer is fixedly arranged at the top in the cavity of the bearing machine shell 3, a rotating shaft 22 is fixedly installed on a motor shaft of the servo driving motor 21, the bottom of the rotating shaft 22 is fixedly connected with the top center of the driven gear 17, a bidirectional switch 23 for controlling the servo drive motor 21 to rotate forward and backward is arranged at one side of the rear end of the top of the bearing machine shell 3 close to the control handle 13.
The servo driving motor 21 adopts the existing servo motor with a controller, can realize bidirectional rotation, can ensure that the angle is more stable and accurate when being adjusted through the speed reduction of the speed reducer, and prevents the over-running of the rotating speed; meanwhile, the electric control rotation can play a role in saving power.
Preferably, a plurality of guiding and supporting balls are movably clamped in the clamping grooves at the bottoms of the driven gear 17 and the driving gear 20, and the bottom of each guiding and supporting ball is abutted against the bottom of the cavity of the supporting machine shell 3.
When driven gear 17 and drive gear 20 rotated, for the frictional force of the bottom butt of the cavity with bearing casing 3 in its rotation process of having reduced, the effect of direction bearing can be played to the direction bearing ball that sets up here, reduces the running resistance.
Preferably, the rotating seat 11 is installed on the outer side wall of the front section of the cylinder barrel of the anchor pulling cylinder 10.
The rotation point is arranged at the front end, so that the lever labor-saving principle is mainly considered, and the difficulty of operation and control of workers can be effectively reduced.
Preferably, the cylinder barrels of the two synchronous lifting cylinders are of an integrally formed single-cylinder double-rod structure.
Preferably, the synchronous lifting cylinder group 8 comprises a vertical cylinder 81 vertically arranged, a lifting piston 82 is installed in the vertical cylinder 81, the upper end of a main piston rod 83 penetrates through the lifting piston 82 and an auxiliary disc 84 is integrally formed at the top of the lifting piston 82, two vertically arranged auxiliary piston rods 85 are respectively and symmetrically installed at the top of the auxiliary disc 84, and the tops of the two auxiliary piston rods 85 respectively penetrate through an end cover at the top end of the vertical cylinder 81 in a sealing manner and extend to the top of the bearing housing 3.
When controlling the lifting of the whole synchronous lifting cylinder group 8, the lifting can be realized by only controlling the movement of one lifting piston 82, two pairs of piston rods 85 can ensure synchronous movement in the lifting process, the control is convenient and simple, the multi-port oil supply problem is not required to be considered, the whole synchronous stability is high, meanwhile, the problem that the two pairs of piston rods 85 can effectively play a role in following the rotation of the lifting piston 82 is solved, thereby the synchronous consistency of the lifting piston when the lifting piston rotates along with the driving gear 20 can be ensured, and the stability and the accuracy of adjusting the rotation angle are ensured.
The device can be integrally installed on a reversed loader or independently installed for use, when the device is used for recycling the anchor rod 6, the synchronous lifting oil cylinder group 8 can be adjusted to lift according to the position of the roadway anchor rod 6, the synchronous lifting oil cylinder group 8 is enabled to reach a designated position and then is enabled to keep in-situ oil supply, at the moment, the control on the steering of the servo driving motor 21 is realized by controlling the two-way switch 23 through an operator, the driven gear 17 drives the driving gear 20 to finally drive the synchronous lifting oil cylinder group 8 to rotate to a proper working angle, the angular positioning is kept, the control handle 13 is continuously controlled to adjust up and down to drive the anchor pulling oil cylinder 10 at the front end to incline to a proper angle, the piston rod at the front end of the anchor pulling oil cylinder 10 extends out and fastens the locking screwed pipe 5 at the front end of the piston rod with the end of the anchor rod 6 to be recycled, at the moment, the piston rod of the anchor pulling, thereby realizing labor-saving recovery of the anchor rod 6.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; the modifications or the substitutions do not cause the essence of the corresponding technical solutions to depart from the scope of the technical solutions of the embodiments of the present invention, and the technical solutions are all covered in the scope of the claims and the specification of the present invention; it will be apparent to those skilled in the art that any alternative modifications or variations to the embodiments of the present invention may be made within the scope of the present invention.
The present invention is not described in detail, but is known to those skilled in the art.
Claims (8)
1. Universal anchor device that returns of working face, its characterized in that: include the base that links firmly through bolt and outside elevating conveyor, the bearing casing of fixed mounting on the base bearing casing internally mounted has universal rotation mechanism the top of bearing casing is equipped with lift adjustment and returns the anchor subassembly, lift adjustment returns the open space at anchor subassembly lower extreme through bearing casing top and extends downwards on the universal rotation mechanism and rather than realizing the cooperation, lift adjustment returns the front end of anchor subassembly and installs and lock the screwed pipe with stock matched with, lift adjustment returns the anchor subassembly and is used for adjusting the angle that is with the stock.
2. The face gimbal anchor return device of claim 1, wherein: the lifting adjusting anchor returning component comprises two synchronous lifting oil cylinders which are parallel to each other and are vertically arranged, the two synchronous lifting oil cylinders form a synchronous lifting oil cylinder group, connecting lug rings are fixedly installed at the tops of piston rods of the two synchronous lifting oil cylinders, an anchor pulling oil cylinder is arranged between the two connecting lug rings, a rotating seat is fixedly installed on a cylinder barrel of the anchor pulling oil cylinder, the rotating seat is inserted into a rotating hole of the connecting lug ring at a corresponding position through a pin shaft which is symmetrically and fixedly connected with two sides of the rotating seat, an operating handle is fixedly connected with the rear end of the cylinder barrel of the anchor pulling oil cylinder, a tensile lug ring is fixedly connected with the end part of the piston rod of the anchor pulling oil cylinder, a steel wire rope is bound on the tensile lug ring, a locking screwed and fastened connected with the outer end part of the anchor rod is fixedly connected with the working end of the steel wire rope, and the bottoms of the cylinder barrels of the two synchronous lifting oil cylinders are fixedly installed on the, and each oil cylinder is connected with a hydraulic pump station on the external reversed loader.
3. The face gimbal anchor return apparatus of claim 2, wherein: the tail end of the control handle is in a hook-shaped bent shape.
4. The face gimbal anchor return device of claim 3, wherein: universal rotation mechanism includes the driven gear that the level was placed, driven gear sets up cup joint each other in the cavity of bearing casing and with vertical fixed driven fixed axle in the cavity vertically link firmly in the rear end cavity of driven fixed axle and be equipped with the initiative fixed axle cup joint on the lateral wall of initiative fixed axle with driven gear engaged with drive gear top fixed mounting has the servo drive motor who takes the speed reducer in the cavity of bearing casing fixed mounting has the revolving axle on servo drive motor's the motor shaft, the bottom of revolving axle with driven gear's top center links firmly mutually the top rear end of bearing casing is close to control one side of handle and install the two-way switch that control servo drive motor realized just reversing.
5. The face gimbal anchor return device of claim 4, wherein: a plurality of guide bearing balls are movably clamped in the clamping grooves at the bottoms of the driven gear and the driving gear, and the bottoms of the guide bearing balls are abutted to the bottom of the cavity of the bearing shell.
6. The face gimbal anchor return device of claim 5, wherein: the rotating seat is installed on the outer side wall of the front section of the cylinder barrel of the anchor pulling oil cylinder.
7. The face gimbal anchor return device of claim 6, wherein: the cylinder barrels of the two synchronous lifting oil cylinders are of an integrally formed single-cylinder double-rod structure.
8. The face gimbal anchor return device of claim 7, wherein: the synchronous lifting oil cylinder group comprises a vertically arranged vertical cylinder barrel, a lifting piston is installed in the vertical cylinder barrel, the upper end of a main piston rod penetrates through the lifting piston and an auxiliary disc is integrally formed at the top of the lifting piston, two vertically arranged auxiliary piston rods are symmetrically installed at the top of the auxiliary disc respectively, and the tops of the two auxiliary piston rods penetrate through the end cover at the top end of the vertical cylinder barrel in a sealing mode and extend to the top of the bearing casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911353514.4A CN110966028B (en) | 2019-12-25 | 2019-12-25 | Universal anchor returning device for working face |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911353514.4A CN110966028B (en) | 2019-12-25 | 2019-12-25 | Universal anchor returning device for working face |
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| Publication Number | Publication Date |
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| CN110966028A true CN110966028A (en) | 2020-04-07 |
| CN110966028B CN110966028B (en) | 2021-07-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911353514.4A Active CN110966028B (en) | 2019-12-25 | 2019-12-25 | Universal anchor returning device for working face |
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| CN (1) | CN110966028B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112302012A (en) * | 2020-10-15 | 2021-02-02 | 韩云山 | Recoverable stock recovery plant of electric smelting formula pressure type |
| CN112590832A (en) * | 2020-12-31 | 2021-04-02 | 山东里能鲁西矿业有限公司 | Track running device |
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| SU585291A1 (en) * | 1976-03-22 | 1977-12-25 | Всесоюзный Научно-Исследовательский И Проектно-Конструкторский Угольный Институт | Device for measuring the securing strength of an anchoring roof support |
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| CN112590832A (en) * | 2020-12-31 | 2021-04-02 | 山东里能鲁西矿业有限公司 | Track running device |
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| Publication number | Publication date |
|---|---|
| CN110966028B (en) | 2021-07-13 |
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