CN216865136U

CN216865136U - Anti-reverse flow grouting anchoring device

Info

Publication number: CN216865136U
Application number: CN202220249832.7U
Authority: CN
Inventors: 高占江
Original assignee: Handan Zhanjiang Prestressed Anchorage Co ltd
Current assignee: Handan Zhanjiang Prestressed Anchorage Co ltd
Priority date: 2022-02-08
Filing date: 2022-02-08
Publication date: 2022-07-01
Anticipated expiration: 2032-02-08

Abstract

The utility model discloses an anti-backflow grouting anchoring device which comprises a bag, an upper mounting part, a lower mounting part, a hollow pipe, a grouting pipe and a rod body, wherein a discharge end of the grouting pipe is fixedly provided with a grouting barrel communicated with the grouting pipe, the grouting barrel is provided with a main grouting outlet, an elastic part with elasticity is fixedly arranged in the grouting barrel, the elastic part is provided with a sealing assembly, the grouting pipe is radially provided with a secondary grouting outlet, the grouting pipe is internally provided with a hollow piston in a sliding and sealing manner, the inner side of the hollow piston is provided with a through groove for slurry to pass through, and the hollow piston is fixedly connected with the sealing assembly through a connecting rod. When grouting, the sealing assembly and the elastic piece move under the action of grouting pressure, so that slurry enters the slurry outlet cylinder and is discharged from the main slurry outlet, and when the grouting pressure is overlarge, the hollow piston is far away from the secondary slurry outlet, so that part of the slurry can be discharged from the secondary slurry outlet, the overlarge grouting pressure is reduced, and the grouting safety is ensured; and after grouting, the sealing assembly and the hollow piston respectively reclose the main grout outlet and the secondary grout outlet to prevent backflow of grout.

Description

Anti-reverse flow grouting anchoring device

Technical Field

The utility model relates to the technical field of anchorage devices, in particular to an anti-reverse-flow grouting anchoring device.

Background

The bag type grouting anchoring device has been developed rapidly in recent years, and has the characteristics of good corrosion resistance, high reliability and large pulling resistance, which are widely accepted. The center of a bag of the punching bag grouting anchoring device is provided with a hollow tube, injected cement slurry props up the bag and is coagulated into a cement slurry bag body with a central through hole, an anchor rod body penetrates through the upper opening of the through hole, the lower opening penetrates out, and a nut and a base plate are arranged at the tail end of the rod body to support the bag body.

The grouting end of the grouting pipe of the existing bag type grouting anchoring device has an anti-backflow function so as to prevent the phenomenon that the grouting effect is influenced because the pressure in a bag is overlarge and flows back into the grouting pipe after the grouting pipe is filled with grout. The prior art generally adopts a mode of installing a one-way valve, and a device for preventing backflow, such as the one-way valve and the like, is installed at the grouting end of a grouting pipe, so that the production cost is higher, the backflow preventing effect is poor, the backflow of slurry is limited by a mode of sleeving a rubber pipe on a grouting opening, but the fixing effect of the rubber pipe is poor, the rubber pipe is easy to separate from the grouting pipe when the pressure is too high, and the grouting safety cannot be ensured.

SUMMERY OF THE UTILITY MODEL

In view of the above, there is a need to provide an anti-reverse grouting anchor.

In order to achieve the purpose, the utility model provides an anti-backflow grouting anchoring device which comprises a bag, an upper mounting part, a lower mounting part, a hollow pipe, a grouting pipe and a rod body, wherein the bag is connected with the upper mounting part and the other end of the bag is connected with the lower mounting part, the bag, the upper mounting part and the lower mounting part enclose a grouting space together, the hollow pipe is positioned in the grouting space, one end of the hollow pipe is fixedly connected with the upper mounting part in a sealing manner, the other end of the hollow pipe is fixedly connected with the lower mounting part in a sealing manner, the rod body sequentially penetrates through the upper mounting part, the hollow pipe and the lower mounting part, the grouting pipe is fixedly connected with the upper mounting part in a sealing manner, the discharge end of the grouting pipe is positioned in the grouting space, a grouting barrel communicated with the grouting pipe is fixed at the discharge end of the grouting pipe, a main grouting opening is arranged on the grouting barrel, an elastic piece is fixedly arranged in the grouting barrel, and a sealing assembly is arranged on the elastic piece, and the sealing assembly seals the discharge end of the grouting pipe in a natural state.

In one embodiment, the grouting pipe is radially provided with a secondary grout outlet, a hollow piston is installed in the grouting pipe in a sliding and sealing mode, the outer wall of the hollow piston is connected with the grouting pipe in a sliding and sealing mode, a through groove for passing grout is formed in the inner side of the hollow piston, and the hollow piston is fixedly connected with the sealing assembly through a connecting rod; and the secondary slurry outlet is sealed by the hollow piston in a natural state.

In one embodiment, the sealing assembly comprises a baffle plate and a sealing gasket for sealing the discharge end of the grouting pipe, the baffle plate is fixedly installed at one end, close to the grouting pipe, of the elastic part, and the sealing gasket is fixedly installed at one end, opposite to the elastic part, of the baffle plate.

In one embodiment, the upper mounting part comprises an upper clamping cylinder and an upper supporting plate, and the upper clamping cylinder is fixedly connected with the upper supporting plate.

In one embodiment, the periphery of the upper clamping cylinder is sleeved with an upper ring disc, the bag is fixedly mounted on the upper supporting plate through the upper ring disc in a pressing mode, and the bag is fixedly fixed on the periphery of the upper clamping cylinder through an upper binding hoop in a pressing mode.

In one embodiment, the lower mounting part comprises a lower clamping cylinder and a lower supporting plate, and the lower clamping cylinder is fixedly connected with the lower supporting plate.

In one embodiment, the lower clamping cylinder is sleeved with a lower ring disc, the bag is fixedly mounted on the lower supporting plate through the lower ring disc in a pressing mode, and the bag is fixedly mounted on the periphery of the lower clamping cylinder through a lower binding hoop in a pressing mode.

In one embodiment, the upper mounting portion is fixedly mounted with an exhaust pipe in a sealing manner, and one end of the exhaust pipe is located in the bag and used for guiding the gas in the bag to the outside.

In one embodiment, an external thread is arranged at one end of the rod body penetrating through the lower mounting part, and a nut is mounted on the external thread of the rod body in a threaded mode.

In one embodiment, the elastic member is a compression spring.

Compared with the prior art, the technical scheme has the following beneficial effects:

1. when grouting pressure is too large, the displacement distance of the sealing assembly is increased, and the hollow piston is driven to be far away from the secondary grout outlet, so that part of grout can be discharged from the secondary grout outlet, the grouting pressure is reduced, and the grouting safety is ensured;

2. after grouting is finished, under the action of elastic restoring force of the elastic part, the sealing assembly resets to close the main grout outlet again, and the hollow piston closes the secondary grout outlet again to prevent grout from flowing backwards;

3. the bag is fixed on the upper installation part through the upper ring disc and the upper binding hoop, and the bag is fixed on the lower installation part through the lower ring disc and the lower binding hoop, so that the bag is firm to fix and has strong stability.

Drawings

FIG. 1 is a schematic view of an embodiment of an anchor assembly with anti-reverse flow grouting;

FIG. 2 is an elevation view of an anchor assembly with reverse flow grouting prevention according to one embodiment;

FIG. 3 is an enlarged top view of an anti-reverse grouting anchor according to an embodiment;

FIG. 4 is an enlarged view of a portion of the slurry injection pipe and the slurry outlet barrel of FIG. 1;

FIG. 5 is another state diagram of FIG. 4 (main outlet);

FIG. 6 is another state diagram of FIG. 4 (the main outlet and the secondary outlet discharge pulp together);

FIG. 7 is a cross-sectional view taken along line B-B of FIG. 6;

in the figure, 1, the capsular bag; 2. an upper mounting portion; 3. a lower mounting portion; 4. a hollow tube; 5. a grouting pipe; 6. a rod body; 7. grouting space; 8. a pulp outlet cylinder; 9. a main slurry outlet; 10. an elastic member; 11. a seal assembly; 12. a secondary pulp outlet; 13. a hollow piston; 14. a through groove; 15. a connecting rod; 16. a baffle plate; 17. a gasket; 18. mounting a clamping cylinder; 19. an upper supporting plate; 20. an upper ring plate; 21. binding a hoop; 22. a lower clamping cylinder; 23. a lower supporting plate; 24. a lower ring plate; 25. binding a hoop; 26. an exhaust pipe; 27. and a nut.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

The embodiment of the application provides an anti-reverse-flow grouting anchor, please refer to fig. 1-4, the anti-reverse-flow grouting anchor comprises a bag 1, an upper mounting part 2, a lower mounting part 3, a hollow pipe 4, a grouting pipe 5 and a rod body 6, the bag 1 is connected with the upper mounting part 2, the other end is connected with the lower mounting part 3, the bag 1, the upper mounting part 2 and the lower mounting part 3 enclose a grouting space 7 together, the hollow pipe 4 is positioned in the grouting space 7, one end of the hollow pipe is fixedly connected with the upper mounting part 2 in a sealing way, the other end is fixedly connected with the lower mounting part 3 in a sealing way, the rod body 6 sequentially passes through the upper mounting part 2, the hollow pipe 4 and the lower mounting part 3, the grouting pipe 5 is fixedly connected with the upper mounting part 2 in a sealing way, the discharge end of the grouting pipe 5 is positioned in the grouting space 7, the discharge end of the grouting pipe 5 is fixedly provided with a grouting barrel 8 communicated with the discharge end, the main grouting barrel 8 is provided with a grouting outlet 9, an elastic piece 10 with elasticity is fixedly arranged in the grouting barrel 8, the elastic member 10 is provided with a sealing assembly 11, and the sealing assembly 11 seals the discharge end of the grouting pipe 5 in a natural state.

The grouting pipe 5 guides the grout into the grouting space 7, the hollow pipe 4 can isolate the rod body 6 to prevent the rod body 6 from contacting with the grout, and the grouting pipe 5 is connected with a grouting pump to perform grouting operation after the whole device is sent into the stratum through the anchor hole; under the action of grouting pressure, the elastic part 10 is stressed, deformed and compressed, the sealing component 11 is far away from the grouting pipe 5 and does not close the discharge end of the grouting pipe 5 any more, so that the slurry enters the slurry outlet cylinder 8 and is discharged from the main slurry outlet 9; after grouting is finished, under the action of the elastic restoring force of the elastic piece 10, the sealing component 11 is reset to close the main grout outlet 9 again to prevent grout from flowing backwards

In one embodiment, in order to avoid the excessive grouting pressure, please refer to fig. 4, a secondary grout outlet 12 is radially disposed on the grouting pipe 5, when the grouting pressure is excessive, the secondary grout outlet 12 can discharge grout together with the primary grout outlet 9, the grouting pipe 5 is slidably and hermetically mounted, and has a hollow piston 13, an outer wall of the hollow piston 13 is slidably and hermetically connected with the grouting pipe 5, a through groove 14 for passing through grout is disposed inside the hollow piston 13, and the hollow piston 13 is fixedly connected with the sealing component 11 through a connecting rod 15; the hollow piston 13 seals the secondary outlet 12 in a natural state.

During grouting, grout passes through the through groove 14 to impact the sealing assembly 11, the sealing assembly 11 displaces, and the connecting rod 15 drives the hollow piston 13 to move together, if grouting pressure is low, as shown in fig. 5, the displacement distance of the sealing assembly 11 is short, the hollow piston 13 displaces in a small section but cannot be far away from the secondary grout outlet 12, and the secondary grout outlet 12 can still be closed; when the grouting pressure is too large, as shown in fig. 6, the displacement distance of the sealing assembly 11 is increased, and the hollow piston 13 is driven to be away from the secondary grout outlet 12, so that part of the grout can be discharged from the secondary grout outlet 12, the grouting pressure is reduced, and the grouting safety is ensured; after grouting, under the action of the elastic restoring force of the elastic part 10, the sealing assembly 11 drives the hollow piston 13 to reset through the connecting rod 15, and the secondary grout outlet 12 is closed again by the hollow piston 13 to prevent grout from flowing backwards.

On the basis of the above embodiment, preferably, as shown in fig. 4, the sealing assembly 11 includes a baffle 16 and a gasket 17 for closing the discharge end of the grouting pipe 5, the baffle 16 is fixedly installed at one end of the elastic member 10 close to the grouting pipe 5, and the gasket 17 is fixedly installed at one end of the baffle 16 opposite to the elastic member 10. Under the elastic force of the elastic part 10, the sealing gasket 17 can seal the discharge end of the grouting pipe 5, so that after grouting is finished, the sealing gasket 17 can seal the discharge end of the grouting pipe 5 again to prevent backflow of slurry; and when the slurry flows back, the slurry also contacts the baffle 16, so that the baffle 16 is pushed, the reset of the baffle 16 is promoted, and the discharge end of the grouting pipe 5 is quickly closed.

In one embodiment, as shown in fig. 1, the upper mounting portion 2 includes an upper clamping cylinder 18 and an upper supporting plate 19, and the upper clamping cylinder 18 is fixedly connected with the upper supporting plate 19. The upper clamping cylinder 18 is a cylinder with open upper and lower ends, so that the bag 1 can be conveniently installed. The upper supporting plate 19 is fixedly connected with the hollow pipe 4 and the grouting pipe 5 in a sealing way.

On the basis of the above embodiments, preferably, as shown in fig. 1-2, an upper ring plate 20 is sleeved on the periphery of the upper clamping cylinder 18, the sachet 1 is fixedly pressed on the upper supporting plate 19 through the upper ring plate 20, and the sachet 1 is fixedly pressed on the periphery of the upper clamping cylinder 18 through the upper binding hoop 21. The bag 1 is fixed on the upper mounting part 2 through the upper ring disc 20 and the upper binding hoop 21, so that the bag 1 is firmly fixed and has strong stability.

In one embodiment, as shown in fig. 1, the lower mounting portion 3 includes a lower clamping cylinder 22 and a lower support plate 23, and the lower clamping cylinder 22 is fixedly connected with the lower support plate 23. The lower clamping cylinder 22 is a cylinder with open upper and lower ends, so that the bag 1 can be conveniently installed.

On the basis of the above embodiments, preferably, as shown in fig. 1-2, a lower ring disc 24 is sleeved on the periphery of the lower clip cylinder 22, the sachet 1 is fixedly pressed on the lower supporting plate 23 through the lower ring disc 24, and the sachet 1 is fixedly pressed on the periphery of the lower clip cylinder 22 through the lower binding band 25. The bag 1 is fixed on the lower mounting part 3 through the lower ring disc 24 and the lower binding hoop 25, so that the bag 1 is firmly fixed and has strong stability.

In addition to any of the above embodiments, preferably, as shown in fig. 1 to 3, an exhaust pipe 26 is fixedly mounted on the upper mounting portion 2 in a sealing manner, and one end of the exhaust pipe 26 is located in the bladder 1 and is used for guiding the gas in the bladder 1 to the outside. The exhaust pipe 26 is fixedly connected with the upper support plate 19 in a sealing way. In the grouting process, the grout enters the bag 1 through the grouting pipe 5, the air in the bag 1 is replaced by the exhaust pipe 26, and the exhaust pipe 26 is arranged to prevent the air in the bag 1 from being exhausted. When the air outlet pipe 26 starts to discharge the slurry, and the slurry does not contain air bubbles or water, the bag 1 is filled, and the slurry injection is finished.

On the basis of the above embodiment, preferably, as shown in fig. 1-2, one end of the rod body 6 penetrating through the lower mounting part 3 is provided with an external thread, and the external thread of the rod body 6 is threadedly provided with the nut 27. When the anti-backflow grouting anchoring device provided by the embodiment is used, the rod body 6 sequentially penetrates through the upper mounting part 2, the hollow pipe 4 and the lower mounting part 3, so that the external thread part of the rod body 6 extends out of the lower mounting part 3, the nut 27 is mounted on the external thread, the rod body 6 is locked through the nut 27, and the rod body 6 is connected with the upper mounting part 2, the hollow pipe 4 and the lower mounting part 3; then the whole device can be sent into the stratum through the anchor hole, and then the grouting pump is connected to the grouting pipe 5 to carry out anchoring operation.

In addition to the above embodiments, it is preferable that the elastic member 10 is a compression spring. The pressure spring is in a compressed state and can provide elastic force for pushing the sealing assembly 11, so that the sealing assembly 11 seals the discharge end of the grouting pipe 5 in a natural state.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Claims

1. An anti-reverse flow grouting anchoring device comprises a bag, an upper mounting part, a lower mounting part, a hollow pipe, a grouting pipe and a rod body, the bag is connected with the upper mounting part and the other end is connected with the lower mounting part, the bag, the upper mounting part and the lower mounting part enclose a grouting space, the hollow pipe is positioned in the grouting space, one end of the hollow pipe is fixedly connected with the upper mounting part in a sealing way, the other end of the hollow pipe is fixedly connected with the lower mounting part in a sealing way, the rod body sequentially penetrates through the upper mounting part, the hollow pipe and the lower mounting part, the grouting pipe is fixedly connected with the upper mounting part in a sealing way, the discharge end of the grouting pipe is positioned in the grouting space, it is characterized in that a slurry outlet barrel communicated with the discharge end of the grouting pipe is fixed at the discharge end of the grouting pipe, a main slurry outlet is arranged on the slurry outlet barrel, an elastic piece with elasticity is fixedly installed in the slurry outlet cylinder, a sealing assembly is installed on the elastic piece, and the sealing assembly seals the discharge end of the grouting pipe in a natural state.

2. The anti-reverse-flow grouting anchoring device of claim 1, wherein a secondary grout outlet is radially formed in the grouting pipe, a hollow piston is slidably and hermetically mounted in the grouting pipe, the outer wall of the hollow piston is slidably and hermetically connected with the grouting pipe, a through groove for grout to pass through is formed in the inner side of the hollow piston, and the hollow piston is fixedly connected with the sealing assembly through a connecting rod; and the secondary slurry outlet is sealed by the hollow piston in a natural state.

3. The anti-backflow grouting anchoring device according to claim 2, wherein the sealing assembly comprises a baffle and a sealing gasket for sealing the discharge end of the grouting pipe, the baffle is fixedly mounted at one end of the elastic member close to the grouting pipe, and the sealing gasket is fixedly mounted at one end of the baffle, which faces away from the elastic member.

4. The anti-reverse-flow grouting anchor according to claim 1, wherein the upper mounting portion comprises an upper clamping cylinder and an upper supporting plate, and the upper clamping cylinder is fixedly connected with the upper supporting plate.

5. The anti-backflow grouting anchoring device of claim 4, wherein an upper ring plate is sleeved on the periphery of the upper clamping cylinder, the bag is fixedly mounted on the upper supporting plate in a pressing manner through the upper ring plate, and the bag is fixedly fixed on the periphery of the upper clamping cylinder in a pressing manner through an upper binding hoop.

6. The anti-reverse flow grouting anchor according to claim 1, wherein the lower mounting portion comprises a lower clamping cylinder and a lower supporting plate, and the lower clamping cylinder is fixedly connected with the lower supporting plate.

7. The anti-reverse-flow grouting anchoring device of claim 6, wherein a lower ring disc is sleeved on the periphery of the lower clamping cylinder, the bag is fixedly mounted on the lower supporting plate through the lower ring disc in a pressing manner, and the bag is fixedly mounted on the periphery of the lower clamping cylinder through a lower binding hoop in a pressing manner.

8. The anti-backflow grouting anchoring device according to any one of claims 1 to 7, wherein an exhaust pipe is fixedly mounted on the upper mounting portion in a sealing manner, and one end of the exhaust pipe is located in the bladder bag and used for guiding gas in the bladder bag out to the outside.

9. The anti-reverse-flow grouting anchor according to claim 8, wherein an external thread is provided on an end of the rod body penetrating through the lower mounting portion, and a nut is threadedly mounted on the external thread of the rod body.

10. The anti-backflow grouting anchor of claim 9, wherein the elastic member is a compression spring.