CN212615696U

CN212615696U - Special tensioning jack for deep hole anchor recess

Info

Publication number: CN212615696U
Application number: CN202020695964.3U
Authority: CN
Inventors: 黄小义; 张文谦; 曾金蓝; 韦覃茂; 蓝海勇; 黄康; 陶永林; 韦柳景; 樊杰
Original assignee: Liuzhou Lingqiao Prestressed Machinery Co ltd
Current assignee: Liuzhou Lingqiao Prestressed Machinery Co ltd
Priority date: 2020-04-30
Filing date: 2020-04-30
Publication date: 2021-02-26
Anticipated expiration: 2030-04-30

Abstract

The utility model discloses a special tensioning jack for a deep hole anchor recess, which relates to the technical field of jacks and comprises a tensioning oil cylinder, a tensioning piston and a piercing sleeve which are coaxially arranged, wherein the tensioning piston is arranged between the tensioning oil cylinder and the piercing sleeve, a tool anchor is arranged in the piercing sleeve, one end of the tensioning piston, which extends out of the tensioning oil cylinder, is fixedly connected with a supporting cylinder which extends outwards along the axial direction, and the outer end surface of the supporting cylinder is provided with a positioning groove which is inserted into a positioning plate; the supporting cylinder is provided with a positioning table which protrudes inwards in the radial direction, and the positioning table is abutted with the positioning plate; two ends of the piercing sleeve respectively extend out of two ends of the tensioning piston, the front end of the piercing sleeve extends into the supporting cylinder, and the tool anchor is tightly pressed at a shoulder at the front end of the piercing sleeve through a counter-force cylinder inserted into the piercing sleeve; the other end of the counter-force cylinder is fixedly connected with the tensioning oil cylinder through a compression ring. The utility model provides a current jack-draw anchor eye have the problem that the easy skew causes the incident.

Description

Special tensioning jack for deep hole anchor recess

Technical Field

The utility model belongs to the technical field of the jack technique and specifically relates to a stretch-draw jack for deep hole anchor recess.

Background

The conventional tensioning jack comprises a tensioning oil cylinder, a tensioning piston, a piercing sleeve and a tool anchor, wherein the tensioning oil cylinder, the tensioning piston and the piercing sleeve are coaxially arranged, the tensioning piston is located between the tensioning oil cylinder and the piercing sleeve, the tool anchor is installed at the rear end of the piercing sleeve, and the front end of the piercing sleeve is located in the tensioning piston. At present, no special tensioning jack aiming at a deep hole anchor recess exists in the market, when the conventional tensioning jack is used for tensioning steel strands penetrating through the tensioning anchor recess of a precast beam and a cast-in-place beam, the diameter of the tensioning anchor recess is generally small, the depth of the anchor recess hole is deep, the outer diameter of the tensioning jack is large, and the tensioning jack cannot be placed in the anchor recess hole. The tensioning jack of the structure has the following defects: 1. the anchor plate or the extension cylinder needs to be manually righted to ensure that a tool anchor and a working anchor on the jack are on the same axis during tensioning, which is troublesome and is easy to deviate to cause safety accidents; 2. the jack tool anchor is arranged at the rear, a long steel strand needs to be reserved, and the steel strand is seriously wasted.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a special tensioning jack of deep hole anchor socket, this kind of jack can solve current tensioning jack tensioning anchor socket and have the problem that the easy skew causes the incident.

In order to solve the above problem, the utility model discloses a technical scheme is: the tensioning jack special for the deep hole anchor recess comprises a tensioning oil cylinder, a tensioning piston and a penetrating sleeve which are coaxially arranged, wherein the tensioning piston is arranged between the tensioning oil cylinder and the penetrating sleeve, a tool anchor is arranged in the penetrating sleeve, one end of the tensioning piston, which extends out of the tensioning oil cylinder, is fixedly connected with a supporting cylinder which extends outwards along the axial direction, and the outer end surface of the supporting cylinder is provided with a positioning groove which is inserted into a positioning plate; the supporting cylinder is provided with a positioning table which protrudes inwards in the radial direction, and the positioning table is abutted with the positioning plate; two ends of the piercing sleeve respectively extend out of two ends of the tensioning piston, the front end of the piercing sleeve extends into the supporting cylinder, and the tool anchor is tightly pressed on a shoulder at the front end of the piercing sleeve through a counter-force cylinder inserted into the piercing sleeve; the other end of the counter-force cylinder is fixedly connected with the tensioning oil cylinder through a compression ring.

In the above technical scheme of the special tensioning jack for the deep-hole anchor recess, a more specific technical scheme may also be that: the inner wall of stretch-draw piston is equipped with the spread groove, the inner wall of spread groove be equipped with support a threaded connection's screw thread, support a section of thick bamboo with the tank bottom looks butt of spread groove.

Further, the reaction cylinder is in threaded connection with the pressing ring.

Furthermore, the outer end face of the supporting cylinder is provided with a centering groove for mounting the positioning plate.

Further, be equipped with the top cover that offsets with the instrument clamping piece in the instrument anchor, the one end of top cover is fixed in the roof, the major diameter end of instrument clamping piece is connected with the fixed plate, the fixed plate passes through the spring and is connected with the clamp plate, the fixed plate is connected with and passes the uide bushing of clamp plate.

Furthermore, the inner periphery of the positioning table is connected with a baffle ring.

Further, the baffle ring is in threaded connection with the supporting cylinder.

Since the technical scheme is used, compared with the prior art, the utility model following beneficial effect has:

1. the support cylinder is fixedly connected with the tensioning piston to be used as a fixed extension part of the tensioning jack, so that the support cylinder is conveniently placed into the deep hole anchor recess to jack the working anchor through the positioning plate, the deviation in the tensioning process is avoided, and the tensioning safety performance is improved; the core penetrating sleeve extends into the supporting cylinder, the tool anchor is pressed at the front end of the core penetrating sleeve through the top of the counter-force cylinder, the steel strand needing to be reserved is short, and waste of the steel strand is reduced.

2. The tensioning piston is provided with the connecting groove with threads, so that the supporting force and the connecting reliability of the supporting cylinder can be improved, and the supporting cylinders with different lengths can be replaced conveniently according to different anchor recess depths.

3. The counter-force section of thick bamboo and clamping ring threaded connection, the quick assembly disassembly instrument anchor of being convenient for improves stretch-draw efficiency.

4. The top plate and the jacking sleeve are arranged, so that the tool clamping piece can be jacked loose; the fixing plate provided with the mounting tool clamping piece, and the spring and the guide sleeve connected with the fixing plate and the pressing plate can be used for installing the tool clamping piece on the tool anchor at the same time to achieve unified tightening, so that the workload of the mounting tool clamping piece is reduced, and the working efficiency is improved.

5. The baffle ring connected with the supporting cylinder positioning table is convenient to replace after being abraded, material is saved, and the service life is prolonged.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the special tensioning jack for deep-hole anchor recesses.

Description of the figures: 1. a baffle ring; 2. a support cylinder; 3. a tool anchor; 4. a tool clamping piece; 5. a spring; 6. tensioning the oil cylinder; 6-1, tensioning the oil nozzle; 6-2, a return oil nozzle; 7. tensioning the piston; 8. a core penetrating sleeve; 9. a counter-force cylinder; 10. sealing the plug; 11. pressing a ring; 12. pressing a plate; 13. a guide sleeve; 14. a fixing plate; 15. jacking and sleeving; 16. a top plate; 17. positioning a plate; 18. a working clamping piece; 19. a working anchor; 20. anchoring recesses; 21. and (4) steel strands.

Detailed Description

The invention will be described in more detail with reference to the following embodiments:

the special tensioning jack for the deep-hole anchor recess shown in fig. 1 mainly comprises a supporting cylinder 2, a tensioning oil cylinder 6, a tensioning piston 7, a piercing sleeve 8, a counter-force cylinder 9, a sealing plug 10, a pressing ring 11, a tool anchor 3, a tool clamping piece 4, a positioning plate 17, a jacking component and a pressing component which are coaxially arranged, wherein the tensioning piston 7 is arranged between the tensioning oil cylinder 6 and the piercing sleeve 8, two ends of the piercing sleeve 8 respectively extend out from two ends of the tensioning piston 7, the pressing ring 11 which is abutted against the piercing sleeve 8 and the sealing plug 10 is fixedly installed at the tail end of the tensioning oil cylinder 6, and the sealing plug 10 is arranged between the piercing sleeve 8 and the tensioning oil cylinder 6 so as to prevent oil leakage; the tensioning oil cylinder 6 is provided with a tensioning oil nozzle 6-1 and a return oil nozzle 6-2, the tensioning oil nozzle 6-1 is communicated with a tensioning oil cavity formed by enclosing the inner wall of the tensioning oil cylinder 6, the inner end surface of the sealing plug 10, the outer wall of the penetrating sleeve 8 and the rear end surface of the tensioning piston 7, and the return oil nozzle 6-2 is communicated with the return oil cavity between the tensioning oil cylinder 6 and the tensioning piston 7. Support a section of thick bamboo 2 and stretch-draw piston 7 and be connected fixedly, offered the spread groove at the one end inner wall that stretch-draw piston 7 front end deviates from mutually with sealed end cap 10 promptly, the wall body of spread groove be equipped with support a section of thick bamboo 2 threaded connection's screw thread, support a section of thick bamboo 2 one end and stretch-draw piston 7 threaded connection until with the tank bottom looks butt of spread groove, the other end is along the outside extension of axial. The outer end face of the supporting cylinder 2 is provided with a centering groove inserted into the positioning plate 17, and the positioning plate 17 is provided with a positioning groove matched with the working anchor 19 and the working clamping piece 18; the position of the supporting cylinder 2 close to the outer end face is also provided with a positioning table protruding inwards in the radial direction, the inner circumference of the positioning table is connected with a baffle ring 1 in a threaded manner, and the baffle ring 1 and the positioning table are both abutted against a positioning plate 17. In order to reduce the reserved length of a steel strand, a core-through sleeve 9 of the tensioning jack special for the deep hole anchor hole extends into a supporting cylinder 3, a tool anchor 3 is tightly pressed at a shoulder at the front end of the core-through sleeve 8 through a counter-force cylinder 9 inserted into the core-through sleeve 8, and the end surface of the tool anchor 3 close to a baffle ring 1 is flush with the outer end surface of the front end of the core-through sleeve 8 or slightly exceeds the outer end surface of the front end of the core-through sleeve 8; the reaction cylinder 9 is connected with the tensioning oil cylinder 6 through a pressing ring 11, and the pressing ring 11 is fixedly connected with the rear part of the reaction cylinder 9 in a threaded connection mode. When the tool anchor 3 is installed, the tool anchor is pushed to the shoulder surface from the rear end of the piercing sleeve 8, and then the reaction cylinder 9 is screwed into the press ring 11 through threaded connection until the tool anchor 3 is tightly pressed; when the anchors at other hole sites are replaced, the replacement can be completed only by twisting out the reaction cylinder 9, taking down the tool anchor 3 to be replaced, installing the anchor at the hole site and then twisting and resetting the reaction cylinder 9. Therefore, the hole position of the tool anchor 9 is convenient to be quickly adjusted to be consistent with the hole position of the working anchor 19, and the tool anchor 3 with different hole positions can be quickly replaced.

The top loose assembly is an assembly for pushing up the loose tool clamping piece 4 and comprises a top plate 16 and a top sleeve 15, a hole site matched with the hole site of the tool anchor 3 is formed in the top plate 16, one end of the top sleeve 15 is fixed in the top plate 16, and the other end of the top sleeve is inserted into the tool anchor 3 and abuts against the tool clamping piece 4. To prevent the top cover 15 from being detached from the tool anchor 3, the top plate 16 may be connected to the tool anchor 3 by a limit guide, which is axially slidable within the tool anchor 3. The pressing assembly is used for pressing the tool clamping piece 4 in the tool anchor 3 and comprises a fixing plate 14, a spring 5, a guide sleeve 13 and a pressing plate 12, hole sites matched with the hole sites of the tool anchor 3 are formed in the fixing plate 14 and the pressing plate 12, each hole site is provided with one guide sleeve 13, one end of each guide sleeve 13 is fixed on the fixing plate 14, and the other end of each guide sleeve 13 penetrates through the pressing plate 12; the fixed plate 14 is connected with the pressure plate 12 through a spring 5, and the spring 5 is sleeved outside the guide sleeve 13; the fixing plate 14 is provided with tool clamping pieces 4 corresponding to the hole positions, the large-diameter end of each tool clamping piece 4 is connected with the fixing plate 14, and the small-diameter end is arranged in the direction departing from the pressing plate 12. Because the tool clamping pieces 4 are all arranged on the fixing plate 14, the tool clamping pieces 4 do not need to be arranged and tightened when being tensioned every time, and time and labor are saved.

When the special tensioning jack for the deep hole anchor recess is used for tensioning construction, the whole jack is hoisted, the hole position of the tool anchor 3 is well aligned with the steel strand 21, the supporting cylinder 2 extends into the anchor recess 20 by integrally pushing forwards, the steel strand 21 penetrating through the working anchor 19, the working clamping piece 18 and the positioning plate 17 sequentially penetrates through the baffle ring 1, the top plate 16, the top sleeve 15, the tool anchor 3, the tool clamping piece 4, the fixing plate 14, the guide sleeve 13 and the pressing plate 12, and when the positioning plate 17 is inserted into the supporting cylinder 2, the middle groove is attached to the supporting cylinder 2, so that installation can be completed. Supplying oil to a tensioning oil nozzle 6-1, moving a moving body consisting of a tensioning oil cylinder 6, a sealing plug 10, a pressure ring 11 and a penetrating sleeve 8 backwards relative to a fixed body consisting of a supporting cylinder 2 and a tensioning piston 7, clamping the steel strand 21 by a tool clamping piece 4 in the process that the penetrating sleeve 8 drives a tool anchor 3 to backwards move, clamping and tensioning the steel strand 21, and loading an oil pump when the tensioning is carried out to a designed value; and then oil is supplied to the return oil nozzle 6-2, the tensioning piston 7 and the supporting cylinder 2 retract, when the tensioning piston retracts to the bottom, the shoulder of the penetrating sleeve 8 pushes the top plate 16 to drive the jacking sleeve 15 to jack the tool clamping piece 4 to withdraw the anchor, and at the moment, the whole jack is pushed backwards, so that the jack can be easily taken out, and one-time tensioning is completed.

This special tensioning jack of deep hole anchor socket's a support section of thick bamboo 2 passes through threaded connection with tensioning piston 7, forms integral type jack, saves the trouble that the extension section of thick bamboo was right in the manual adjustment, and a support section of thick bamboo external diameter is little, can put into anchor socket 20 stretch-draw, and automatic centering behind work anchor 19 is emboliaed to locating plate 17, and work anchor 19 and instrument anchor 3 are on same axis when guaranteeing the stretch-draw, adopts threaded connection moreover, is convenient for to satisfy the stretch-draw requirement according to the support section of thick bamboo 2 of different length is changed to the anchor socket 20 degree of depth of difference. The tool anchor 3 is arranged in the front, the lengthened core-through sleeve 8 extends into the anchor recess 20, and about 25cm of the tensioning steel strand 21 is reserved to meet the tensioning requirement, so that the steel strand 21 is greatly saved.

Claims

1. The utility model provides a special tensioning jack of deep hole anchor cave, includes the tensioning cylinder, the tensioning piston and the heart cover of coaxial setting, the tensioning piston set up in the tensioning cylinder with between the heart cover, be provided with instrument anchor, its characterized in that in the heart cover: one end of the tensioning piston extending out of the tensioning oil cylinder is fixedly connected with a support cylinder extending outwards along the axial direction, and the outer end surface of the support cylinder is provided with a positioning groove inserted into the positioning plate; the supporting cylinder is provided with a positioning table which protrudes inwards in the radial direction, and the positioning table is abutted with the positioning plate; two ends of the piercing sleeve respectively extend out of two ends of the tensioning piston, the front end of the piercing sleeve extends into the supporting cylinder, and the tool anchor is tightly pressed on a shoulder at the front end of the piercing sleeve through a counter-force cylinder inserted into the piercing sleeve; the other end of the counter-force cylinder is fixedly connected with the tensioning oil cylinder through a compression ring.

2. The special tensioning jack for the deep-hole anchor recess according to claim 1, wherein: the inner wall of stretch-draw piston is equipped with the spread groove, the inner wall of spread groove be equipped with support a threaded connection's screw thread, support a section of thick bamboo with the tank bottom looks butt of spread groove.

3. The special tensioning jack for the deep-hole anchor recess according to claim 2, wherein: the reaction cylinder is in threaded connection with the pressing ring.

4. The special tensioning jack for the deep-hole anchor recess of claim 3, wherein: and the outer end surface of the supporting cylinder is provided with a centering groove for mounting the positioning plate.

5. A special tensioning jack for deep-hole anchor sockets according to any one of claims 1 to 4, wherein: the tool anchor is internally provided with a top sleeve which is abutted to the tool clamping piece, one end of the top sleeve is fixed in the top plate, the large-diameter end of the tool clamping piece is connected with a fixed plate, the fixed plate is connected with a pressing plate through a spring, and the fixed plate is connected with a guide sleeve which penetrates through the pressing plate.

6. The special tensioning jack for the deep-hole anchor recess of claim 5, wherein: and the inner periphery of the positioning table is connected with a baffle ring.

7. The special tensioning jack for the deep-hole anchor recess of claim 6, wherein: the baffle ring is in threaded connection with the supporting cylinder.