CN117888930B - Be arranged in small clear distance tunnel to press from both sides rock reinforcement supporting equipment - Google Patents
Be arranged in small clear distance tunnel to press from both sides rock reinforcement supporting equipment Download PDFInfo
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- CN117888930B CN117888930B CN202410289908.2A CN202410289908A CN117888930B CN 117888930 B CN117888930 B CN 117888930B CN 202410289908 A CN202410289908 A CN 202410289908A CN 117888930 B CN117888930 B CN 117888930B
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- support
- limiting cavities
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- 230000002787 reinforcement Effects 0.000 title claims abstract description 17
- 239000011435 rock Substances 0.000 title claims abstract description 15
- 238000007789 sealing Methods 0.000 claims description 29
- 230000007246 mechanism Effects 0.000 claims description 24
- 238000004140 cleaning Methods 0.000 claims description 15
- 230000003287 optical effect Effects 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 10
- 238000003825 pressing Methods 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 8
- 230000001360 synchronised effect Effects 0.000 claims description 7
- 238000005096 rolling process Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 description 9
- 230000009471 action Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 230000003014 reinforcing effect Effects 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- 239000004575 stone Substances 0.000 description 3
- 239000002002 slurry Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D19/00—Provisional protective covers for working space
- E21D19/04—Provisional protective covers for working space for use in drifting galleries
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Civil Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention relates to the field of tunnel reinforcement and support, in particular to a rock clamping reinforcement and support device for a small clear distance tunnel, which solves the problem that the existing support arch plate is easy to cause damage to rails and rollers when being jacked up.
Description
Technical Field
The invention relates to the field of tunnel reinforcement support, in particular to a rock clamping reinforcement support device for a small clear distance tunnel.
Background
The small clear distance tunnel is a special tunnel arrangement mode that the thickness of a middle rock wall in the tunnel is smaller than the minimum clear distance of the separated independent double holes, the small clear distance tunnel needs to be erected in the tunnel after the initial construction of the tunnel is finished, and concrete slurry is pumped into the rock soil layer of the tunnel through a grouting pipe on the supporting equipment after the erection is finished so as to improve the strength of the small clear distance tunnel.
The existing supporting equipment slides through a ground rail, after the supporting grouting reinforcement operation in a section of tunnel is completed, the next section of the tunnel can be slid to carry out the supporting grouting reinforcement operation, but in the process of carrying out the supporting grouting reinforcement operation each time, the supporting arch plate is jacked up through the hydraulic lifting cylinder, wherein the hydraulic lifting cylinder is supported between the rail and the supporting arch plate, the pressure between the pulley and the rail is large, if the internal structure of the pulley is damaged easily due to long-time pressure application, the supporting reinforcement operation of the rear section part can be influenced, and therefore, the supporting equipment for the rock clamping reinforcement in the small-clear-distance tunnel is provided.
Disclosure of Invention
The invention aims to provide a supporting device for clamping rock reinforcement in a small-clear-distance tunnel, which is used for solving the problems in the background art.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a be arranged in small clear distance tunnel to press from both sides rock reinforcement supporting equipment, includes the support arch bar and inlays the pouring guide pipe that a plurality of equidistance was distributed in the outer wall of support arch bar, and the bottom both sides of support arch bar all are fixed to be equipped with two sets of extension slide bars, and the bottom of extension slide bar has slidingly cup jointed the support sleeve, has laid a set of rail below the support arch bar, and the bottom of support sleeve is equipped with the gyro wheel with rail roll assembly;
Further comprises:
The hydraulic mechanism is used for propping the supporting arch plate under the condition of not damaging the rail and the roller wheels, and is arranged between the supporting arch plate and the rail;
the cleaning mechanism is used for cleaning the contact surface of the roller and the rail in the sliding process of the whole supporting equipment, and is arranged between the supporting sleeve and the roller.
Preferably, the hydraulic mechanism comprises a connecting plate fixedly arranged on a supporting sleeve on the same side, a hydraulic cylinder barrel and a sealing barrel are fixedly hoisted at the bottom in the middle of the connecting plate, a hydraulic rod is arranged at one end, close to the sealing barrel, of the hydraulic cylinder barrel in a hydraulic sliding mode, the hydraulic rod is slidably extended to the inside of the sealing barrel, a piston disc I fixedly connected with the hydraulic rod is slidably arranged in the sealing barrel, and a tightening assembly is further arranged on one side of the connecting plate.
Preferably, the tightening assembly comprises a fixed sleeve plate fixedly arranged on the side edge of the connecting plate, two groups of first limiting cavities and second limiting cavities are formed in the fixed sleeve plate, the two groups of first limiting cavities and the second limiting cavities are symmetrically arranged, the first limiting cavities are distributed above the second limiting cavities, an upper supporting rod is inserted into the first limiting cavities, a first piston block which is in sliding connection with the inner wall of the first limiting cavities is fixedly arranged at the lower end of the upper supporting rod, a first spring is arranged between the upper end of the first piston block and the first limiting cavities, a lower supporting rod is inserted into the second limiting cavities, a second spring is arranged between the lower end of the second piston block and the second limiting cavities, the top of the second limiting cavities is communicated with the bottom of the sealing cylinder through a conveying pipe, and a limiting assembly is arranged between the lower end of the first limiting cavities and the upper end of the second limiting cavities.
Preferably, the limiting component comprises a transverse groove which is arranged in the fixed sleeve plate, the transverse groove is communicated with a first limiting cavity and a second limiting cavity, a conical opening is formed in a port, close to the second limiting cavity, of the transverse groove, a leak orifice plate is slidably arranged in the transverse groove, a spring III is arranged between one end, far away from the conical opening, of the leak orifice plate and the transverse groove, and a sealing ball plug is fixedly arranged at the other end of the leak orifice plate.
Preferably, the lower end surface of the supporting arch plate is fixedly provided with two symmetrically distributed bearing plates.
Preferably, the bottoms of the lower stay bars mounted on the same fixed sleeve plate are hinged on the same base plate together.
Preferably, the diameter of the sealing ball plug is larger than the minor mouth diameter of the tapered mouth.
Preferably, the cleaning mechanism comprises a columnar cavity arranged at the bottom of the supporting sleeve, a rotating shaft is fixedly arranged at the top in the columnar cavity in a rotating manner, a piston disc II is slidably arranged in the columnar cavity, the piston disc is located below the rotating shaft, a spring IV is arranged between the lower end of the piston disc II and the columnar cavity, the columnar cavity is communicated with an external one-way valve through a branch pipe arranged on the side wall of the lower end of the columnar cavity, two extending pipes are downwards fixedly extended at the bottom of the columnar cavity and distributed on the front side and the rear side of the roller, a one-way valve II is arranged outside each extending pipe, a driving assembly is arranged between the rotating shaft and a rail, and a pressing assembly is arranged between the rotating shaft and the piston disc II.
Preferably, the driving assembly comprises an optical axis which is rotationally arranged on one side of the supporting sleeve close to the center of the supporting arch plate, a synchronous gear is arranged at the upper end of the optical axis and the outer surface of the rotating shaft, the synchronous gear is used for transmission, a rack is fixedly arranged on one side of the rail close to the center of the supporting arch plate, and a driving gear meshed with the rack is fixedly sleeved at the bottom of the optical axis.
Preferably, the pressing component comprises a rotary table fixedly arranged at the lower end of the rotary shaft, a plurality of arc-edge triangular blocks distributed at equal intervals on the circumference are fixedly arranged at the lower end of the rotary table, and jacking columns which are identical in number with the arc-edge triangular blocks and distributed at equal intervals on the circumference are fixedly arranged on the upper end face of the piston disc II and are in one-to-one correspondence with the arc-edge triangular blocks and in sliding contact with the arc-edge triangular blocks.
Compared with the prior art, the invention has the beneficial effects that:
1. According to the invention, the supporting and tightening assembly is driven by the hydraulic mechanism, the upper supporting rod is propped against the bearing plate, the lower supporting rod is propped against the ground through the base plate, and the supporting arch plate is propped up in such a way to be tightly attached to the top of the tunnel, so that the condition that the rail and the roller are continuously stressed by heavy pressure to cause damage is avoided;
2. in the tunnel construction, the contact position of the roller and the rail is easy to adhere to sand and stone due to the construction environment, and the cleaning mechanism is triggered by the pressing component in the sliding process of the supporting equipment, so that the two conveying pipes continuously blow air against the front side and the rear side of the roller, sand and stone at the contact position of the roller and the rail are blown off by wind power, and the blocking of sand and stone to sliding of the roller and the rail is reduced.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is a schematic view of a hydraulic mechanism according to the present invention;
FIG. 4 is a schematic diagram of a first piston disc according to the present invention;
FIG. 5 is a schematic view of the structure of the tightening assembly of the present invention;
FIG. 6 is a schematic view of the structure of the inside of the transverse slot in the present invention;
FIG. 7 is a schematic view of a cleaning mechanism according to the present invention;
FIG. 8 is a schematic view of the structure of the triangular blocks and the top posts of the present invention.
In the figure: 1. supporting arch plates; 2. pouring a guide pipe; 3. a rail; 4. a roller; 5. a support sleeve; 6. an extension slide bar; 7. a hydraulic mechanism; 8. a tightening assembly; 9. a cleaning mechanism; 10. a drive assembly; 11. a hydraulic cylinder; 12. a hydraulic rod; 13. a sealing cylinder; 14. a delivery tube; 15. a first piston disc; 16. a connecting plate; 17. fixing the sleeve plate; 18. a receiving plate; 19. an upper stay bar; 20. a lower stay bar; 21. a first limiting cavity; 22. a second limiting cavity; 23. a piston block I; 24. a piston block II; 25. a first spring; 26. a second spring; 27. a backing plate; 28. a transverse groove; 29. a tapered mouth; 30. sealing the ball plug; 31. a perforated plate; 32. a third spring; 33. a columnar cavity; 34. a rotating shaft; 35. an optical axis; 36. a synchronous toothed belt; 37. a drive gear; 38. a rack; 39. a first check valve; 40. an extension tube; 41. a second check valve; 42. a piston disc II; 43. a spring IV; 44. a turntable; 45. arc edge triangle blocks; 46. and (5) a top column.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-6, a supporting device for rock clamping reinforcement in a small clear distance tunnel in the drawings comprises a supporting arch plate 1 and a plurality of pouring guide pipes 2 embedded on the outer wall of the supporting arch plate 1 and distributed at equal intervals, wherein two groups of extending slide bars 6 are fixedly arranged on two sides of the bottom of the supporting arch plate 1, the bottoms of the extending slide bars 6 are in sliding sleeve connection with supporting sleeves 5, a group of rails 3 are paved below the supporting arch plate 1, and rollers 4 in rolling assembly with the rails 3 are arranged at the bottoms of the supporting sleeves 5;
further comprises: the hydraulic mechanism 7 and the cleaning mechanism 9, wherein the hydraulic mechanism 7 is used for effectively propping the supporting arch plate 1 under the condition of not damaging the rail 3 and the roller 4, and the hydraulic mechanism 7 is arranged between the supporting arch plate 1 and the rail 3; the cleaning mechanism 9 is used for cleaning the contact surface between the roller 4 and the rail 3 in the sliding process of the whole supporting equipment, the cleaning mechanism 9 is arranged between the supporting sleeve 5 and the roller 4, and the pouring guide pipe 2 is convenient for workers to insert grouting pipes into the tunnel rock wall through the pipe cavity, and reinforcing slurry is injected into the rock stratum at the top of the tunnel.
The hydraulic mechanism 7 comprises a connecting plate 16 fixedly arranged on two supporting sleeves 5 on the same side, a hydraulic cylinder 11 and a sealing cylinder 13 are fixedly hung at the bottom of the middle of the connecting plate 16, a hydraulic rod 12 is hydraulically and slidably arranged at one end, close to the sealing cylinder 13, of the hydraulic cylinder 11, the hydraulic rod 12 slidably extends to the inside of the sealing cylinder 13, a piston disc 15 fixedly connected with the hydraulic rod 12 is slidably arranged in the sealing cylinder 13, and a tightening assembly 8 is arranged at one side, close to each other, of the two connecting plates 16; the hydraulic cylinder 11 drives the hydraulic rod 12 to move downwards, the piston disc 15 presses the pressure liquid in the sealing cylinder 13, and the pressure liquid is conveyed into the tightening assembly 8 through the conveying pipe 14.
The tightening assembly 8 comprises a fixed sleeve plate 17 fixedly arranged on the side edge of the connecting plate 16, two groups of first limiting cavities 21 and second limiting cavities 22 are formed in the fixed sleeve plate 17, the two groups of first limiting cavities 21 and the second limiting cavities 22 are symmetrically arranged, the first limiting cavities 21 are distributed above the second limiting cavities 22, an upper supporting rod 19 is inserted into the first limiting cavities 21, a first piston block 23 which is in sliding connection with the inner wall of the first limiting cavities 21 is fixedly arranged at the lower end of the upper supporting rod 19, a first spring 25 is arranged between the upper end of the first piston block 23 and the first limiting cavities 21, a lower supporting rod 20 is inserted into the second limiting cavities 22, a second piston block 24 which is in sliding connection with the second limiting cavities 22 is fixedly arranged at the upper end of the lower supporting rod 20, a second spring 26 is arranged between the lower end of the second piston block 24 and the second limiting cavities 22, the top of the second limiting cavities 22 is communicated with the bottom of the sealing cylinder 13 through the conveying pipe 14, and a limiting assembly is arranged between the lower end of the first limiting cavities 21 and the upper end of the second limiting cavities 22; the upper stay bar 19 and the lower stay bar 20 can extend out and abut against the ground and the supporting arch plate 1 by pushing the first piston block 23 and the second piston block 24 respectively through pressure liquid.
The limiting assembly comprises a transverse groove 28 which is formed in the fixed sleeve plate 17, the transverse groove 28 is vertically distributed with the first limiting cavity 21 and the second limiting cavity 22, the transverse groove 28 is communicated with the first limiting cavity 21 and the second limiting cavity 22, a conical opening 29 is formed in a port, close to the second limiting cavity 22, of the transverse groove 28, a hole leakage plate 31 is slidably mounted in the transverse groove 28, a third spring 32 is arranged between one end, far away from the conical opening 29, of the hole leakage plate 31 and the transverse groove 28, and a sealing ball plug 30 is fixedly arranged at the other end of the hole leakage plate 31; under the condition that the pressure liquid in the second limiting cavity 22 is continuously input, the pressure in the second limiting cavity 22 is continuously increased, and the sealing ball plug 30 is pushed away.
The lower end face of the supporting arch plate 1 is fixedly provided with two symmetrically distributed bearing plates 18, and the bearing plates 18 are used for bearing the thrust of the upper supporting rod 19 and transmitting the thrust to the supporting arch plate 1 so that the supporting arch plate 1 is tightly attached to the top of a tunnel.
The bottoms of the lower stay bars 20 arranged on the same fixed sleeve plate 17 are hinged on the same base plate 27, and the design of the base plate 27 can increase the contact area between the lower stay bars 20 and the ground and ensure the stability of the lower stay bars 20.
Working principle: when the support reinforcing operation is carried out, the hydraulic cylinder 11 is driven by a worker, the hydraulic rod 12 pushes the piston disc I15 to move downwards, pressure liquid in the sealing cylinder 13 is pushed into the limiting cavity II 22 through the conveying pipe 14, the piston block II 24 is pushed downwards firstly until the backing plate 27 is tightly attached to the ground after the pressure liquid is input, after the pressure liquid is continuously input, the piston block II 24 cannot move continuously, the pressure in the limiting cavity II 22 is gradually increased, the sealing ball plug 30 is pushed to compress the spring III 32, at the moment, the sealing ball plug 30 is not closed to the conical opening 29 any more, the pressure liquid can enter the limiting cavity I21, the upper supporting rod 19 is pushed upwards through the piston block I23, the upper supporting rod 19 is propped against the supporting plate 18, and the upper supporting rod 19 and the lower supporting rod 20 are supported between the ground and the supporting plate 1 under the condition that the pressure liquid is continuously pushed by the piston disc I15, so that the pressure applied to the rail 3 and the rolling wheel 4 is reduced, the effectiveness of the support reinforcing operation can be ensured, and the rolling wheel 4 can be prevented from being damaged simultaneously.
Referring to fig. 7 and 8, the diameter of the sealing ball plug 30 is larger than the diameter of the small opening of the tapered opening 29, so that the sealing ball plug 30 is prevented from being undersized and cannot temporarily seal the tapered opening 29.
The cleaning mechanism 9 comprises a cylindrical cavity 33 arranged at the bottom of the supporting sleeve 5, a rotating shaft 34 is fixedly arranged at the top of the cylindrical cavity 33 in a rotating manner, a second piston disc 42 is slidably arranged in the cylindrical cavity 33, the second piston disc 42 is positioned below the rotating shaft 34, a fourth spring 43 is arranged between the lower end of the second piston disc 42 and the cylindrical cavity 33, the cylindrical cavity 33 is communicated with an external one-way valve 39 through a branch pipe arranged on the side wall of the lower end of the cylindrical cavity 33, two extending pipes 40 are fixedly extended downwards at the bottom of the cylindrical cavity 33, the two extending pipes 40 are distributed at the front side and the rear side of the roller 4, a second one-way valve 41 is arranged outside each extending pipe 40, a driving assembly 10 is arranged between the rotating shaft 34 and a rail 3, and a pressing assembly is arranged between the rotating shaft 34 and the second piston disc 42; when the support device slides to the next construction position, the driving component 10 can trigger the pressing component to enable the extension pipe 40 to supply air towards the contact position of the roller 4 and the rail 3, wherein the circulation direction of the first check valve 39 is that the outside is in unidirectional circulation to the inside of the columnar cavity 33, and the circulation direction of the second check valve 41 is opposite to the first check valve 39.
The driving assembly 10 comprises an optical axis 35 which is rotatably arranged on one side of the supporting sleeve 5 close to the center of the supporting arch plate 1, a synchronous gear is arranged at the upper end of the optical axis 35 and the outer surface of the rotating shaft 34 and is driven by a synchronous toothed belt 36, a rack 38 is fixedly arranged on one side of the rail 3 close to the center of the supporting arch plate 1, and a driving gear 37 meshed with the rack 38 is fixedly sleeved at the bottom of the optical axis 35; in the course of the support sleeve 5 following the movement of the roller 4, the drive gear 37 moves on the rack 38, so that the optical axis 35 rotates with the rotation shaft 34 by the timing belt 36.
The pressing assembly comprises a rotary table 44 fixedly arranged at the lower end of the rotary shaft 34, a plurality of arc-edge triangular blocks 45 which are distributed at equal intervals in circumference are fixedly arranged at the lower end of the rotary table 44, and jacking columns 46 which are distributed at equal intervals in circumference and are the same in number as the arc-edge triangular blocks 45 are fixedly arranged on the upper end face of the piston disc II 42, and the jacking columns 46 are in one-to-one correspondence with the arc-edge triangular blocks 45 and are in sliding contact with the arc-edge triangular blocks 45.
When the supporting and reinforcing operation is completed at one place in the tunnel, the supporting device needs to slide to the next supporting point, the roller 4 moves on the rack 38 in the sliding process, the optical axis 35 can rotate along the rotating shaft 34, the rotating shaft 34 rotates along the rotating disc 44, the piston disc two 42 moves up and down in a reciprocating manner under the action of the pushing of the arc triangular block 45 to the top column 46 and the spring four 43, the one-way valve one 39 is matched for air inlet, the one-way valve two 41 is matched for air outlet, the two extension pipes 40 continuously blow air towards the front side and the rear side of the roller 4, the lower ports of the extension pipes 40 are designed into cone shapes, the air outlet flow speed can be increased, sand dust on the contact position of the roller 4 and the rail 3 can be blown clean, and the sliding displacement fluency of the supporting device is ensured.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a be arranged in small clear distance tunnel to press from both sides rock reinforcement supporting equipment, includes support arch bar (1) and inlays in a plurality of equidistance of support arch bar (1) outer wall and distribute pour guide pipe (2), its characterized in that: two groups of extension slide bars (6) are fixedly arranged on two sides of the bottom of the support arch plate (1), a support sleeve (5) is sleeved at the bottom of the extension slide bars (6) in a sliding manner, a group of rails (3) are paved below the support arch plate (1), and rollers (4) which are assembled with the rails (3) in a rolling manner are arranged at the bottom of the support sleeve (5);
Further comprises:
The hydraulic mechanism (7) is used for propping the supporting arch plate (1) under the condition of not damaging the rail (3) and the roller (4), and the hydraulic mechanism (7) is arranged between the supporting arch plate (1) and the rail (3);
the cleaning mechanism (9) is used for cleaning the contact surface of the roller (4) and the rail (3) in the whole sliding process of the supporting equipment, and the cleaning mechanism (9) is arranged between the supporting sleeve (5) and the roller (4);
The hydraulic mechanism (7) comprises a connecting plate (16) fixedly arranged on the same side supporting sleeve (5), a hydraulic cylinder barrel (11) and a sealing barrel (13) are fixedly hung at the bottom in the middle of the connecting plate (16), a hydraulic rod (12) is hydraulically and slidably arranged at one end, close to the sealing barrel (13), of the hydraulic cylinder barrel (11), the hydraulic rod (12) slidably extends to the inside of the sealing barrel (13), a piston disc I (15) fixedly connected with the hydraulic rod (12) is slidably arranged in the sealing barrel (13), and a tightening assembly (8) is further arranged at one side of the connecting plate (16);
The supporting component (8) comprises a fixed sleeve plate (17) fixedly arranged on the side edge of the connecting plate (16), two groups of first limiting cavities (21) and second limiting cavities (22) are formed in the fixed sleeve plate (17), the two groups of first limiting cavities (21) and the second limiting cavities (22) are symmetrically arranged, the first limiting cavities (21) are distributed above the second limiting cavities (22), an upper supporting rod (19) is inserted into the first limiting cavities (21), a first piston block (23) in sliding connection with the inner wall of the first limiting cavities (21) is fixedly arranged at the lower end of the upper supporting rod (19), a first spring (25) is arranged between the upper end of the first piston block (23) and the first limiting cavities (21), a lower supporting rod (20) is inserted into the second limiting cavities (22), a second piston block (24) in sliding connection with the second limiting cavities (22) is fixedly arranged at the upper end of the lower supporting rod (20), a second spring (26) is arranged between the lower end of the second piston block (24) and the second limiting cavities (22), and the top of the second limiting cavities (22) and the bottom of the sealing cylinder (13) are communicated with the upper end of the second limiting cavities (14) through the first limiting cavities (14).
2. A device for the jack-up support in small clear-distance tunnels according to claim 1, characterized in that: the limiting assembly comprises a transverse groove (28) formed in the inner portion of the fixed sleeve plate (17), the transverse groove (28) is communicated with a first limiting cavity (21) and a second limiting cavity (22), a conical opening (29) is formed in a port, close to the second limiting cavity (22), of the transverse groove (28), a leak orifice plate (31) is mounted in the transverse groove (28) in a sliding mode, a spring III (32) is arranged between one end, far away from the conical opening (29), of the leak orifice plate (31) and the transverse groove (28), and a sealing ball plug (30) is fixedly arranged at the other end of the leak orifice plate (31).
3. A device for the jack-up support in small clear-distance tunnels according to claim 1, characterized in that: two bearing plates (18) which are symmetrically distributed are fixedly arranged on the lower end surface of the supporting arch plate (1).
4. A device for the jack-up support in small clear-distance tunnels according to claim 1, characterized in that: the bottoms of the lower supporting rods (20) arranged on the same fixed sleeve plate (17) are hinged on the same backing plate (27) together.
5. A device for the jack-up support in small clear-distance tunnels according to claim 2, characterized in that: the diameter of the sealing ball plug (30) is larger than the small opening diameter of the conical opening (29).
6. A device for the jack-up support in small clear-distance tunnels according to claim 1, characterized in that: the cleaning mechanism (9) comprises a cylindrical cavity (33) arranged at the bottom of the supporting sleeve (5), a rotating shaft (34) is fixedly arranged at the inner top of the cylindrical cavity (33) in a rotating mode, a piston disc II (42) is slidably arranged in the cylindrical cavity (33), the piston disc II (42) is located below the rotating shaft (34), a spring IV (43) is arranged between the lower end of the piston disc II (42) and the cylindrical cavity (33), the cylindrical cavity (33) is communicated with an external one-way valve IV (39) through a branch pipe arranged on the side wall of the lower end of the cylindrical cavity, two extending pipes (40) are downwards fixedly arranged at the bottom of the cylindrical cavity (33), the two extending pipes (40) are distributed on the front side and the rear side of the roller (4), a one-way valve II (41) is arranged outside each extending pipe (40), a driving assembly (10) is arranged between the rotating shaft (34) and a rail (3), and a pressing assembly is arranged between the rotating shaft (34) and the piston disc II (42).
7. The apparatus for the jacket-over-rock reinforcement and support in small clear-distance tunnels of claim 6, wherein: the driving assembly (10) comprises an optical axis (35) which is rotationally arranged on one side of the supporting sleeve (5) close to the center of the supporting arch plate (1), a synchronous gear is arranged at the upper end of the optical axis (35) and the outer surface of the rotating shaft (34) and is driven by a synchronous toothed belt (36), a rack (38) is fixedly arranged on one side of the rail (3) close to the center of the supporting arch plate (1), and a driving gear (37) meshed with the rack (38) is fixedly sleeved at the bottom of the optical axis (35).
8. The apparatus for the jacket-over-rock reinforcement and support in small clear-distance tunnels of claim 6, wherein: the pressing assembly comprises a rotary table (44) fixedly arranged at the lower end of the rotary shaft (34), a plurality of arc-edge triangular blocks (45) which are distributed at equal intervals in circumference are fixedly arranged at the lower end of the rotary table (44), jacking columns (46) which are distributed at equal intervals in circumference and are identical in number to the arc-edge triangular blocks (45) are fixedly arranged on the upper end face of the piston disc II (42), and the jacking columns (46) are in one-to-one correspondence with the arc-edge triangular blocks (45) and are in sliding contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410289908.2A CN117888930B (en) | 2024-03-14 | 2024-03-14 | Be arranged in small clear distance tunnel to press from both sides rock reinforcement supporting equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410289908.2A CN117888930B (en) | 2024-03-14 | 2024-03-14 | Be arranged in small clear distance tunnel to press from both sides rock reinforcement supporting equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117888930A CN117888930A (en) | 2024-04-16 |
| CN117888930B true CN117888930B (en) | 2024-06-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410289908.2A Active CN117888930B (en) | 2024-03-14 | 2024-03-14 | Be arranged in small clear distance tunnel to press from both sides rock reinforcement supporting equipment |
Country Status (1)
| Country | Link |
|---|---|
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| CN119712144A (en) * | 2024-12-12 | 2025-03-28 | 中交一公局集团有限公司 | Tunnel construction method and structure |
| CN120240194B (en) * | 2025-04-15 | 2025-10-03 | 宿迁市宿城区园艺技术推广站 | Novel assembled solar greenhouse for vegetable planting |
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