CN219604337U - Connecting device for post-tensioning method prestressed anchor rod - Google Patents

Abstract

The utility model relates to a connecting device for a post-tensioned prestressing anchor, which is characterized in that a grout stopping plate and a connecting plate with adjustable positions are arranged on an anchored anchor, a radial plate with radial adjustment is arranged in the grout stopping plate, a rubber plug is arranged at the end part of the radial plate and is used for plugging an anchor hole, a telescopic ejector rod structure is arranged at the left end of the connecting plate and is used for reliably propping up the grout stopping plate, meanwhile, reverse tension is applied to the connecting plate and the anchor so as to better anchor a rock mass, the connecting plate is adjusted and locked through an anchor rod clamping device, and the length between different positions is adjusted through a hinged length-adjustable device.

Description

Connecting device for post-tensioning method prestressed anchor rod

Technical Field

The utility model belongs to the technical field of anchor rod connection, and particularly relates to a connecting device for a post-tensioning prestress anchor rod.

Background

The anchor rod is the most basic component part of roadway support in contemporary coal mines, and the anchor rod reinforces surrounding rocks of the roadway together so that the surrounding rocks support themselves. The anchor rod is not only used for mines, but also used for engineering technology, and is used for reinforcing main bodies of slopes, tunnels and dam bodies. The anchor rod is used as tension member for deep stratum, and has one end connected to engineering structure and the other end deep stratum. 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, and the free section is used for transmitting the tension at the head of the anchor rod to the area of an anchoring body and has the function of applying prestress to the anchor rod; the anchor section is the area where the cement paste is used for bonding the prestressed tendons and the soil layer, and has the functions of increasing the bonding friction effect between the anchor body and the soil layer, increasing the bearing effect of the anchor body, transmitting the tension force of the free section to the deep part of the soil body, and the prestressed anchor rod consists of an anchor head, a rod body and a base plate, and applying a certain prestress to the surrounding rock through the anchoring force generated by the anchor head to actively strengthen the surrounding rock.

In the prior art, grouting treatment is needed to be carried out on an anchor hole after the prestressed anchor rod is anchored, a special grouting hole is needed to be used for grouting, an effective blocking is carried out by using a woven bag at the end part of the anchor hole, but the blocking effect is not good, a plurality of anchor rods are needed to carry out anchoring stress on an anchored rock body in the prior art, each anchor rod is independently stressed, the stress born by each anchor rod is different, the loss condition is different, danger can occur when a certain anchor rod is damaged and broken, and other anchor rods are good, so the anchor rod is provided with the following patent application number of 201922302372.0: in a patent application for a connection device for extending a prestressed anchor, it is disclosed that: the utility model provides a connecting device of extension prestressing force stock, includes the wall, fixedly connected with a plurality of evenly distributed's stock in the wall, a plurality of the stock has been cup jointed in the position that the stock is located the wall outside the stopper that ends, a plurality of it keeps away from wall one side screw thread fixedly connected with fixing bolt to end stopper, a plurality of the stock is kept away from and is located the wall outside the part and keep away from fixing bolt one end screw thread connection has a plurality of multi-direction fixed blocks, a plurality of be provided with branch stress connection device between the multi-direction fixed block. Although the problem that damage is caused by concentrated stress of a pole-causing individual anchor bolt and danger is caused is solved, the pole-causing individual anchor bolt has a certain limitation, wherein a wall surface or a rock body is not necessarily a regular plane, the surface of the rock body is often more hollow, the scheme obviously cannot meet the connection problem under the condition that different anchoring points are rugged, meanwhile, a grout stop plug is in threaded connection, if the anchor bolt is in threaded treatment, the strength of the anchor bolt is reduced, the danger is caused, meanwhile, the mode of fixedly installing a fixing block on the anchor bolt is adopted, the length of the anchor bolt penetrating into an anchor hole is limited, the position of the connecting point is fixed, and certain wide applicability of the anchor bolt is lost, so that a connecting device for a post-tensioning method prestressed anchor bolt is needed to solve the problem.

Disclosure of Invention

Aiming at the defects existing in the prior art, the utility model aims to provide a connecting device for a post-tensioned prestressing anchor, which is used for solving the problem that the anchor connecting device in the prior art mentioned in the background art cannot be used for carrying out known net type connection anchoring aiming at an uneven rock surface, solving the problem that the connecting position cannot be moved and limiting the depth of an anchor rod penetrating into an anchor hole, and solving the problem that the strength of the anchor rod is reduced due to the arrangement of a grout stop.

The technical aim of the utility model is realized by the following technical scheme:

the connecting device for the post-tensioning prestress anchor rod comprises a wall surface, wherein a plurality of anchor rods which are uniformly distributed are fixedly connected in the wall surface, and the connecting device is characterized in that an annular grouting stopping plate is arranged at the position of the wall surface in a penetrating manner, the inner diameter of the grouting stopping plate is larger than the diameter of the anchor rod, and a plug structure arranged at the connecting position of the anchor rod and the wall surface is arranged in the grouting stopping plate, so that the reliable grouting blocking effect of the anchor rod in the wall surface is achieved;

the open pot head of stock is equipped with the annular connecting plate of arranging in the thick liquid board right side that ends, the internal diameter of annular connecting plate is greater than the stock diameter, be provided with stock clamping device in the connecting plate, satisfy the centre gripping to the stock, the left end face of connecting plate is provided with the sleeve of multiunit horizontal setting along circumference equipartition, sliding connection has the ejector pin in the sleeve, the tip and the thick liquid board right-hand member face contact cooperation that ends of ejector pin, be connected with the extension spring between ejector pin and the sleeve inner bottom surface, be provided with stress connection device between the multiunit connecting plate, satisfy and carry out the system connection to multiunit connecting plate through stress connection device.

Preferably, the cock body structure includes along the annular holding tank of seting up of end thick liquid board internal diameter department, be provided with multiunit along ending thick liquid board radial direction sliding fit's radial board along circumference equipartition in the holding tank, be connected with between the tip of radial board and the holding tank inner bottom surface along ending the radial reset spring that sets up of thick liquid board, radial board end connection has the rubber buffer that is used for inserting in stock and wall hookup location department.

Preferably, the anchor rod clamping device comprises a plurality of groups of T-shaped grooves which are uniformly distributed on the right end surface of the connecting plate along the circumferential direction and are radially arranged along the connecting plate, T-shaped sliding blocks are slidably matched in the T-shaped grooves, first lead screws which are in threaded fit with the T-shaped sliding blocks are rotationally connected in the T-shaped grooves, the first lead screws extend out of the connecting plate, first gears are arranged at the end parts of the first lead screws, the anchor rod clamping device further comprises a rotating ring which is rotationally connected outside the connecting plate, and gear rings meshed with the plurality of groups of first gears are arranged in the rotating ring;

the clamping rods which are obliquely arranged towards the anchor rod direction are arranged at the right ends of the T-shaped sliding blocks, the lower ends of the clamping rods are connected with supporting rods which are radially and slidably connected in the connecting plates through connecting rods, and rubber anti-skid sleeves are arranged at the ends of the supporting rods and the clamping rods.

Preferably, the supporting rod and the clamping rod are arranged in a flush manner at the end parts.

Preferably, a binding iron wire arranged in the telescopic spring is connected between the ejector rod and the inner bottom surface of the sleeve, and a through hole is formed in the wall of the sleeve.

Preferably, the stress connecting device comprises a fixing ring arranged outside the connecting plate, a plurality of groups of L-shaped matching plates are uniformly distributed and connected along the circumferential direction of the fixing ring, threaded holes are formed in the matching plates, locking pins are screwed in the threaded holes, and the stress connecting device further comprises a length adjusting device connected between the matching plates on two different connecting plates, so that the connecting plates at two different positions are matched and connected.

Preferably, the length adjusting device comprises a connecting block matched with the matching plate, a threaded hole matched with the lock pin in a threaded mode is formed in the connecting block, the end portion of the connecting block is hinged to a second screw rod, a screwing sleeve is arranged between two groups of second screw rods to be connected in a threaded mode, threads of the two groups of second screw rods to be matched and connected are opposite in screwing direction, and a screwing nut is coaxially arranged outside the screwing sleeve.

The utility model has the beneficial effects that: according to the utility model, the grout stopping plate and the connecting plate with adjustable positions are arranged on the anchored anchor rod, the radial plate with radial adjustment is arranged in the grout stopping plate, the end part of the radial plate is provided with the rubber plug for plugging the anchor hole, the telescopic ejector rod structure arranged at the left end of the connecting plate is used for reliably propping up the grout stopping plate, meanwhile, reverse tension is applied to the connecting plate and the anchor rod, so that the rock mass is better anchored, the connecting plate is adjusted and locked through the anchor rod clamping device, and the length of the connecting plate is adjusted through the hinged length-adjustable device.

Drawings

Fig. 1 is a perspective view of the present utility model.

Fig. 2 is a perspective view of the present utility model at a second perspective view.

Fig. 3 is a front view of the present utility model.

Fig. 4 is a side view of the present utility model.

Fig. 5 is a perspective view of the anchor rod clamping device and the plug body structure of the present utility model.

Fig. 6 is a perspective view of a structure of a plug body according to the present utility model.

Fig. 7 is a cross-sectional view of a plug structure according to the present utility model.

Fig. 8 is a perspective view of the rock bolt clamping device of the present utility model.

Fig. 9 is a cross-sectional view of the rock bolt clamping device of the present utility model.

Fig. 10 is a perspective view of a stress connection device according to the present utility model.

In the figure, 1, a wall surface; 2. a bolt; 3. a slurry stopping plate; 4. a connecting plate; 5. a sleeve; 6. a push rod; 7. a telescopic spring; 8. a receiving groove; 9. a radial plate; 10. a return spring; 11. a rubber stopper; 12. a T-shaped groove; 13. a T-shaped slider; 14. a first lead screw; 15. a first gear; 16. a rotating ring; 17. a gear ring; 18. a clamping rod; 19. a support rod; 20. an anti-skid sleeve; 21. binding an iron wire; 22. a through hole; 23. a fixing ring; 24. matching plates; 25. a locking pin; 26. a connecting block; 27. a second lead screw; 28. screwing the sleeve; 29. and screwing the nut.

Description of the embodiments

The following is a further detailed description of embodiments of the present utility model with reference to figures 1-10.

In combination with the prior art, the first embodiment provides a connecting device for a post-tensioning prestressed anchor rod 2, which comprises a wall surface 1, wherein the wall surface 1 is not limited to a wall body, but also can be a structure such as a rock mass structure which needs anchoring, the rock mass structure is more uneven than the structure of the wall surface 1, a plurality of anchor rods 2 which are uniformly distributed are fixedly connected in the wall surface 1, the anchor rods 2 are anchored in anchor holes through anchorage devices, tensioning treatment is carried out on the anchor rods 2 before anchoring, certain prestress is applied, annular grout stop plates 3 are penetrated at positions of the anchor rods 2, the inner diameters of the grout stop plates 3 are larger than the diameters of the anchor rods 2, the grout stop plates 3 are conveniently sleeved on the anchor rods 2, so that screw holes are prevented from being removed at corresponding positions of the anchor rods 2, the strength of the anchor rods 2 is prevented from being reduced, the positions of grout stop plugs can be selected at any time according to different positions, the applicability is improved, a plug structure arranged at the connection position of the anchor rod 2 and the wall surface 1 is arranged in the grout stop plate 3, the reliable grouting plugging effect on the anchor rod 2 in the wall surface 1 is satisfied, the plug structure comprises annular accommodating grooves 8 which are formed along the inner diameter of the grout stop plate 3, a plurality of groups of radial plates 9 which are in sliding fit along the radial direction of the grout stop plate 3 are uniformly distributed in the accommodating grooves 8 along the circumferential direction, guide grooves are arranged in the radial direction of the accommodating grooves 8, guide rails which are matched with the guide grooves are arranged on the radial plates 9, so that the grouting plug structure can only move along the radial direction of the accommodating grooves 8, a reset spring 10 which is arranged along the radial direction of the grout stop plate 3 is connected between the end part of the radial plate 9 and the inner bottom surface of the accommodating grooves 8, the reset spring 10 plays a role in resetting, when the radial plates 9 are outwards opened, the force of the reset spring 10 is overcome, then the whole grout stop plate 3 is sleeved at the position of the end part of the anchor hole, sometimes the rock surface is inclined, at the moment, the reset springs 10 at different positions apply different forces to enable the radial plate 9 to move towards the anchor rod 2, so that the radial plate 9 plays a role of locking at the current position, the end part of the radial plate 9 is connected with a rubber plug 11 which is used for being inserted into the connecting position of the anchor rod 2 and the wall surface 1, and the rubber plug 11 is used for being inserted into the anchor hole to perform grout stop treatment;

the open end of the anchor rod 2 is sleeved with an annular connecting plate 4 arranged on the right side of the grout stopping plate 3, the inner diameter of the annular connecting plate 4 is larger than the diameter of the anchor rod 2, the clamping effect of the connecting plate 4 after sleeved at different positions of the anchor rod 2 is also facilitated, an anchor rod 2 clamping device is arranged in the connecting plate 4 to clamp the anchor rod 2, the anchor rod 2 clamping device is used for clamping the anchor rod 2 at the current position, the connecting plate 4 is positioned at the current position, a plurality of groups of transversely arranged sleeves 5 are uniformly distributed on the left end surface of the connecting plate 4 along the circumferential direction, ejector rods 6 are connected in a sliding manner in the sleeves 5, the end parts of the ejector rods 6 are in contact fit with the right end surface of the grout stopping plate 3, a telescopic spring 7 is connected between the ejector rods 6 and the inner bottom surface of the sleeves 5, and the cooperation of the ejector rods 6 and the grout stopping plate 3 enables the grout stopping plate 3 to be reliably pressed at the positions of anchor holes, meanwhile, because the forces of the telescopic springs 7 are mutually applied to the connecting plate 4 and the anchor rod 2, at the moment, reverse acting force is applied to the telescopic springs, similar to the application of tension force, so that rock mass is better anchored, a binding iron wire 21 arranged in the telescopic springs 7 is connected between the ejector rod 6 and the inner bottom surface of the sleeve 5, through holes 22 are formed in the wall of the sleeve 5, the purpose of arranging the binding iron wires 21 is to enable a plurality of groups of ejector rods 6 to be retracted into the sleeve 5 when the telescopic springs are installed, after the connecting plate 4 is clamped, the binding iron wires 21 can be sheared through the holes 22 by pliers and the telescopic springs 7 are released, so that the ejector rods 6 are in contact with the grout stop plate 3 in a matched manner, the telescopic springs are more convenient, a stress connecting device is arranged between the plurality of groups of connecting plates 4, and the purpose of systematically connecting the plurality of groups of connecting plates 4 through the stress connecting device is met, when the stress of one group of anchor rods 2 fails, the stress connecting device anchors the anchor rods 2 at different positions by using the well-formed stress net, so that the danger caused by one failure is avoided;

when the anchoring device is used, firstly, after the anchor rod 2 is anchored, the radial plate 9 is outwards stirred at the end part of the anchor rod 2 to compress the reset spring 10, the center of the grout stop plate 3 is opened to ensure that the diameter of the central hole body is larger than that of the anchor rod 2, then the grout stop plate 3 is sleeved on the anchor rod 2, the inclination angle of the grout stop plate 3 is regulated according to the inclination angle of a rock surface, then the radial plate 9 is pressed outside the anchor rod 2 by the acting force of the reset spring 10 to ensure that the radial plate 9 is temporarily locked at the current position, a grout stop plug at the moment is inserted into an anchor hole to play a certain plugging effect, then the connecting plate 4 is inserted into the anchor rod 2 by regulating the clamping position of the clamping device of the anchor rod 2, after reaching the appointed position, the contact position of the ejector rod 6 and the grout stop plate 3 is generally selected at the appointed position, then the connecting plate 4 is clamped by the clamping device of the anchor rod 2, after the clamping is finished, the tie iron wires 21 are cut off at the positions of the through holes 22 through the pliers, so that the ejector rod 6 applies a certain acting force to the grout stop plate 3 to reliably block the positions of the end parts of the anchor holes, meanwhile, the reverse acting force of the spring is applied to the connecting plate 4 and the anchor rod 2 to ensure that the anchor rod 2 has a certain outward tension to play a certain anchoring effect, then the connecting plates 4 on the anchor rods 2 at different positions are connected through the stress connecting device to form a woven net structure, the integral anchoring effect is improved, the embodiment can carry out woven net anchoring on the anchor rods 2 under different rock surfaces, the integral anchoring strength is improved, the stress is equally divided, the failure caused by overlarge single stress is avoided, and the connected positions and the positions of the grout stop plugs can be operated, the flexible and changeable problem of avoiding reducing stock 2 intensity, flexible ejector pin 6 between connecting plate 4 and the grout stop plate 3 not only can play the effect of locking grout stop plate 3 position, can also apply certain outside tension to stock 2, further improves the anchoring effect of rock mass, and the practicality is strong, is fit for using widely.

In the second embodiment, on the basis of the first embodiment, the clamping device of the anchor rod 2 comprises a plurality of groups of T-shaped grooves 12 which are uniformly distributed on the right end surface of the connecting plate 4 along the circumferential direction and are radially arranged along the connecting plate 4, a T-shaped sliding block 13 is slidably matched in the T-shaped grooves, the T-shaped sliding block 13 can only move along the radial direction of the connecting plate 4, a first lead screw 14 which is in threaded fit with the T-shaped sliding block 13 is rotationally connected in the T-shaped grooves 12, the position adjustment in the radial direction is carried out by driving the T-shaped sliding block 13 through the rotation of the first lead screw 14, the first lead screw 14 extends out of the connecting plate 4, a first gear 15 is arranged at the end part of the first lead screw, the clamping device also comprises a rotating ring 16 which is rotationally connected outside the connecting plate 4, a plurality of groups of gear rings 17 meshed with the first gears 15 are arranged in the rotating ring 16, and the gear 17 is meshed with the first gears 15, so that the first gears 15 and the first lead screw 14 are driven to rotate;

the right end of the T-shaped sliding block 13 is provided with clamping rods 18 which are obliquely arranged towards the direction of the anchor rod 2, the lower end of each clamping rod 18 is connected with a supporting rod 19 which is radially and slidably connected in the connecting plate 4 through a connecting rod, the supporting rods 19 and the ends of the clamping rods 18 are provided with rubber anti-slip sleeves 20, the supporting rods 19 and the ends of the clamping rods 18 are flush, the supporting rods 19 and the clamping rods 18 are flush, the connecting plate 4 is clamped at the current position in the process of moving along with the T-shaped sliding block 13, the clamping rods 18 are the effect of preventing the connecting plate 4 from being separated from the anchor rod 2 in the process of reversely pushing the telescopic spring 7, and the thickness of each anti-slip sleeve 20 can be selected so that the anti-slip sleeves can be reliably pressed on the anchor rod 2 to prevent the connecting plate from being separated;

when the fixing device is used, when the anchor rod 2 is clamped, the rotating ring 16 is reversely rotated, the gear rings 17 connected to the rotating ring 16 drive the plurality of groups of first gears 15 to rotate, the first lead screw 14 is driven to rotate by the rotation of the first gears 15, so that the T-shaped sliding block 13 is driven to move outwards in the radial direction, the center of the connecting plate 4 is opened, the connecting plate 4 can be inserted into the anchor rod 2, after the fixing device is inserted into a designated position, the rotating ring 16 is reversely rotated, so that the first lead screw 14 reversely rotates, the T-shaped sliding block 13 is driven to reversely move, the anchor rod 2 is clamped by the movement of the supporting rod 19 and the clamping rod 18, the connecting plate 4 is clamped at the current position by the supporting rod 19, and the clamping rod 18 is used for preventing the connecting plate 4 from being separated from the anchor rod 2 in the process of reversely pushing the telescopic spring 7.

The third embodiment is based on the first embodiment, the stress connecting device comprises a fixed ring 23 arranged outside the connecting plate 4, the fixed ring 23 is arranged outside the connecting plate 4, a plurality of groups of L-shaped matching plates 24 are uniformly distributed and connected along the circumferential direction of the fixed ring 23, threaded holes are formed in the matching plates 24, locking pins 25 are screwed in the threaded holes, the locking pins 25 penetrate through the threaded holes, and the stress connecting device further comprises a length adjusting device connected between the matching plates 24 on two different connecting plates 4, so that the connecting plates 4 at two different positions are matched and connected;

the length adjusting device comprises a connecting block 26 matched with a matching plate 24, a threaded hole matched with a lock pin 25 is formed in the connecting block 26, the connecting block 26 is locked by screwing the lock pin 25 into the threaded hole in the connecting block 26, the end part of the connecting block 26 is hinged with a second lead screw 27, the hinge position of the second lead screw 27 is hinged along the direction of the lock pin 25, as shown in the attached drawing, a screwing sleeve 28 is sleeved on a threaded sleeve between two groups of second lead screws 27 needing to be connected, the threads of the two groups of second lead screws 27 in matched connection are opposite in screwing direction, a screwing nut 29 is coaxially arranged outside the screwing sleeve 28, the screwing nuts 28 are adjusted through screwing the screwing threads, the second lead screws 27 at two ends of the screwing sleeve move away from each other and are moved in directions close to each other, so that the length between the two ends of the screwing nut is adjusted, and the connecting plate is suitable for connection between the connecting plates 4 at different concave-convex positions.

When the utility model is used, firstly, after the anchor rod 2 is anchored, the radial plate 9 is stirred outwards at the end part of the anchor rod 2 to compress the return spring 10, the center of the grout stop plate 3 is opened to ensure that the diameter of the central hole body is larger than that of the anchor rod 2, then the grout stop plate 3 is sleeved on the anchor rod 2, the inclination angle of the grout stop plate 3 is regulated according to the inclination angle of a rock surface, then the radial plate 9 is pressed outside the anchor rod 2 by the acting force of the return spring 10 to be temporarily locked at the current position, the grout stop plug at the moment is inserted into the anchor hole to play a certain blocking effect, when the anchor rod 2 is clamped, the rotating ring 16 is reversely rotated, the gear rings 17 connected on the rotating ring 16 drive a plurality of groups of first gears 15 to rotate, the first lead screws 14 are driven to rotate by the rotation of the first gears 15, so that the T-shaped sliding blocks 13 are driven to move outwards in the radial direction, the center of the connecting plate 4 is opened to enable the connecting plate 4 to be inserted into the anchor rod 2, after the connecting plate is inserted into a designated position, the rotating ring 16 is reversely rotated, the first screw rod 14 is reversely rotated to drive the T-shaped sliding block 13 to reversely move, the anchor rod 2 is clamped by the movement of the supporting rod 19 and the clamping rod 18, the supporting rod 19 clamps the connecting plate 4 at the current position, the clamping rod 18 prevents the connecting plate 4 from being separated from the anchor rod 2 in the process of reversely pushing the telescopic spring 7, after clamping, the binding iron wire 21 is sheared at the position of the through hole 22 by the pliers, so that the ejector rod 6 applies a certain acting force to the grout stop plate 3 to reliably block the position of the end part of the anchor hole, meanwhile, the reverse acting force of the spring is applied to the connecting plate 4 and the anchor rod 2 to enable the anchor rod 2 to have a certain outward tension, the anchor rod has a certain anchoring effect, the positions of the connecting plates 4 to be connected are adjusted well, the connecting rods are matched on the matching plates 24, the connecting rods are screwed into threaded holes in the connecting blocks 26 through the lock pins 25, then the lengths between the connecting plates and the connecting plates are adjusted through screwing nuts 29, the connecting plates are adapted to the distances between the connecting plates 4 in different positions, the locking effect is achieved, a mesh structure is formed, the overall anchoring effect is improved, the anchor rod 2 under different rock surface conditions can be anchored in a mesh mode, the overall anchoring strength is improved, meanwhile, the stress is equally divided, failure caused by overlarge single stress is avoided, the positions of the connecting plates and the grout stop plugs can be operated in an adjustable mode, the anchor rod 2 strength is prevented from being reduced, the telescopic ejector rods 6 between the connecting plates 4 and the grout stop plates 3 can play a role in locking the positions of the grout stop plates 3, certain outer tension can be applied to the anchor rod 2, the anchoring effect of a rock body is further improved, and the anchor rod is high in practicability and is suitable for popularization and use.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims (7)

1. The utility model provides a connecting device for post-tensioning method prestressing force stock (2), includes wall (1), fixedly connected with a plurality of evenly distributed stock (2) on wall (1), its characterized in that, stock (2) are located wall (1) position department and wear to be equipped with annular grout stop plate (3), the internal diameter of grout stop plate (3) is greater than stock (2) diameter, be provided with in grout stop plate (3) and arrange stock (2) and wall (1) junction position department's cock body structure in, satisfy and carry out reliable slip casting shutoff effect to stock (2) in wall (1);

the utility model discloses a thick liquid board, including anchor rod (2), annular connecting plate (4) on the left end face of anchor rod (2), annular connecting plate (4) and sleeve (5) that are provided with the annular connecting plate (4) on the right side of stopping thick liquid board (3), the internal diameter of annular connecting plate (4) is greater than anchor rod (2) diameter, be provided with anchor rod (2) clamping device in connecting plate (4), the left end face of connecting plate (4) is provided with multiunit sleeve (5) that transversely set up along circumference equipartition, sliding connection has ejector pin (6) in sleeve (5), the tip of ejector pin (6) and the contact of stopping thick liquid board (3) right-hand member face cooperate, be connected with expansion spring (7) between ejector pin (6) and sleeve (5) interior bottom surface, be provided with stress connection device between multiunit connecting plate (4), satisfy and carry out systematic connection to multiunit connecting plate (4) through stress connection device.

2. The connecting device for the post-tensioned prestressing anchor (2) according to claim 1, wherein the plug body structure comprises annular containing grooves (8) formed in the inner diameter of the grout stopping plate (3), a plurality of groups of radial plates (9) which are in sliding fit along the radial direction of the grout stopping plate (3) are uniformly distributed in the containing grooves (8) along the circumferential direction, a reset spring (10) which is radially arranged along the grout stopping plate (3) is connected between the end part of the radial plates (9) and the inner bottom surface of the containing grooves (8), and a rubber plug (11) which is used for being inserted into the connecting position of the anchor (2) and the wall surface (1) is connected with the end part of the radial plates (9).

3. The connecting device for the post-tensioned prestressing anchor (2) according to claim 1, wherein the anchor (2) clamping device comprises a plurality of groups of T-shaped grooves (12) which are uniformly distributed on the right end face of the connecting plate (4) along the circumferential direction and are radially arranged along the connecting plate (4), a T-shaped sliding block (13) is slidingly matched in the T-shaped grooves, a first lead screw (14) which is in threaded fit with the T-shaped sliding block (13) is rotationally connected in the T-shaped grooves (12), the first lead screw (14) extends out of the connecting plate (4) and is provided with a first gear (15) at the end part, and the connecting device further comprises a rotating ring (16) which is rotationally connected outside the connecting plate (4), and a gear ring (17) which is meshed with the plurality of groups of first gears (15) is arranged in the rotating ring (16);

clamping rods (18) obliquely arranged towards the anchor rod (2) are arranged at the right ends of the T-shaped sliding blocks (13), supporting rods (19) radially and slidably connected in the connecting plates (4) are connected to the lower ends of the clamping rods (18) through connecting rods, and rubber anti-skidding sleeves (20) are arranged at the ends of the supporting rods (19) and the ends of the clamping rods (18).

4. A connection device for post-tensioned prestressed bolts (2) according to claim 3, characterized in that the support rods (19) are arranged flush with the ends of the clamping rods (18).

5. The connecting device for the post-tensioned prestressing anchor (2) according to claim 1, wherein a binding iron wire (21) arranged in the telescopic spring (7) is connected between the ejector rod (6) and the inner bottom surface of the sleeve (5), and a through hole (22) is formed in the wall of the sleeve (5).

6. The connecting device for the post-tensioned prestressing anchor (2) according to claim 1, wherein the connecting device comprises a fixing ring (23) arranged outside the connecting plates (4), a plurality of groups of L-shaped matching plates (24) are uniformly distributed and connected on the fixing ring (23) along the circumferential direction, threaded holes are formed in the matching plates (24), locking pins (25) are screwed in the threaded holes, and the connecting device further comprises a length adjusting device connected between the matching plates (24) on two different connecting plates (4) to realize the matching connection of the connecting plates (4) at two different positions.

7. The connecting device for the post-tensioned prestressing anchor (2) according to claim 6, wherein the length adjusting device comprises a connecting block (26) matched with a matching plate (24), a threaded hole matched with a lock pin (25) in a threaded mode is formed in the connecting block (26), a second lead screw (27) is hinged to the end portion of the connecting block (26), a screwing sleeve (28) is sleeved on a threaded mode between two groups of second lead screws (27) to be connected, the screwing directions of the threads of the two groups of second lead screws (27) to be matched and connected are opposite, and a screwing nut (29) is coaxially arranged outside the screwing sleeve (28).