A prestressed anchor cable device and its usage method

Abstract

The present invention discloses a prestressed anchor cable device and a using method thereof, which includes a connecting device. The connecting device includes a mounting seat, a clamping plate, a stay wire and an isolation sleeve, and is used for disassembling and connecting the stay wire; the perfusion device includes a grouting pipe, a baffle plate and an anchor plate, and is used for the perfusion of cement and the adjustment of the connecting device; the centering device includes a threaded sleeve, a sliding rod and a connecting plate, and is used for positioning the anchor cable device.

Description

Technical Field

[0001] The present invention relates to the field of construction engineering, and particularly to a prestressed anchor cable device and a usage method thereof. Background Art

[0002] An anchor cable is a commonly used construction method in the construction field. It involves burying the anchor cable device deep into the drilled anchor hole, followed by grouting for anchoring. Then, it is fixed to the building part to be connected through the guy wire on the anchor cable device. Thus, prestressed tension is applied to the building part to be fixed through the guy wire, assisting in the completion of the construction project. However, after the construction of the existing anchor cable device is completed, there are still exposed guy wires. Over time, the guy wires will corrode, affecting the stability of the internal structure. Therefore, after the construction is completed, the guy wires need to be recovered and secondary grouting fixation is carried out.

[0003] For example, a prestressed anchor cable structure and a prestressed anchor cable construction method proposed in CN202210763553.7 include an anchor cable body partially located in the anchor cable hole and a grouting pipe. It is characterized in that: a fixing block is provided at the end of the anchor cable body located in the anchor cable hole, a positioning disk is provided on the fixing block, a plurality of insertion rods are penetrated through the outer side wall of the positioning disk, a butt plate is fixedly connected to the end of the insertion rod located outside the positioning disk, the butt plate can abut against the inner side wall of the anchor cable hole, and an adjusting component for driving the insertion rod to move is provided on the positioning disk. This invention has the effect of improving the stability of the anchor cable in the anchor cable hole. However, this invention has a too complex structure, too high cost, and does not have the function of guy wire recovery.

[0004] While the present invention can, during the anchoring stage, center the present anchor cable device through an umbrella-shaped centering device, making the present anchor cable device more balanced and stable in force, and can separate the guy wire through a connecting device after the construction is completed, so as to carry out recovery. During the anchoring stage, center the present anchor cable device through an umbrella-shaped centering device, making the present anchor cable device more balanced and stable in force, and can separate the guy wire through a connecting device after the construction is completed, so as to carry out recovery. Summary of the Invention

[0005] To solve the above problems, the object of the present invention is to provide a prestressed anchor cable device and a usage method thereof. The prestressed anchor cable device and the usage method can, during the anchoring stage, center the present anchor cable device through an umbrella-shaped centering device, making the present anchor cable device more balanced and stable in force, and can separate the guy wire through a connecting device after the construction is completed, so as to carry out recovery.

[0006] The present invention provides a prestressed anchor cable device, which includes a bottom plate, and a cover plate is arranged above the bottom plate. The prestressed anchor cable device further includes: a connecting device arranged above the bottom plate for disassembling and assembling the connection of the guy wire; a pouring device arranged inside and above the cover plate for pouring cement and adjusting the connecting device; and a centering device arranged outside and above the cover plate for positioning the anchor cable device.

[0007] Further, the connecting device includes a mounting seat, a clamping plate, a guy wire, and an isolation sleeve. The mounting seats are evenly distributed in a ring above the bottom plate. The clamping plate is slidably connected to the mounting seat. The lower part of the clamping plate is connected to the bottom plate through a spring. A connecting head is arranged at the end of the guy wire. The isolation sleeve is installed in the installation groove of the mounting seat. The isolation sleeve is located outside the guy wire. The isolation sleeve is made of a flexible material including rubber. A circular protrusion is arranged at the end of the isolation sleeve for convenient installation and fixation.

[0008] Further, the mounting seat is provided with a limiting groove in the direction towards the center of the bottom plate, convex points are arranged inside the mounting seat, and an installation groove is arranged at the upper end of the mounting seat.

[0009] Further, an "L"-shaped clamping groove is arranged outside the connecting head, and the "L"-shaped clamping groove fits with the convex points.

[0010] Further, the edge of the clamping plate fits with the "L"-shaped clamping groove, so that the clamping plate limits the rotation of the connecting head.

[0011] Further, the pouring device includes a grouting pipe, a baffle plate, and an anchor plate. The baffle plate is connected above the cover plate through uniformly distributed sliding rods in a ring. The anchor plate is arranged at one end of the guy wire. The anchor plate is located at the opening of the anchor hole. The end of the grouting pipe is connected to the anchor plate. A through hole that can pass through the grouting pipe and the isolation sleeve is arranged on the baffle plate.

[0012] Further, a stepped protrusion is arranged at the front end of the grouting pipe. Threads are arranged on the outer side of the front end of the grouting pipe. The grouting pipe is of a hollow structure, and a through hole is arranged at the front end of the grouting pipe to connect the inside.

[0013] Further, a stepped through hole and a pouring hole whose lower end fits with the isolation sleeve are arranged on the anchor plate. An anchor sleeve is installed at the upper end of the through hole. The anchor sleeve is sleeved on the guy wire.

[0014] Further, the centering device includes a threaded sleeve, a sliding rod, and a connecting plate. The threaded sleeve is installed on the grouting pipe through threads. The threaded sleeve is slidably connected to the sliding rod. The lower end of the connecting plate is hinged below the sliding rod. The upper end of the connecting plate is connected to the isolation sleeve through a connecting rod. A supporting leg is hinged on the outer side of the upper end of the connecting plate. A serrated anti-slip structure is arranged on the outer side of the supporting leg.

[0015] The present invention also provides a method for installing a prestressed anchor cable device, which is applicable to the above-mentioned prestressed anchor cable device. The specific use steps are as follows:

[0016] Step 1: Put the wire sleeve in the isolation sleeve, then insert the connector into the mounting seat, so that the convex point on the inner side of the mounting seat fits into the slot on the outer side of the connector, and then rotate the connector so that the convex point is located at the end of the slot, so that the connector cannot be directly pulled out, and then clamp the connector with a card plate so that the connector cannot be rotated, thereby limiting the connector;

[0017] Step 2: insert the front end of the grouting pipe into the cover plate to block the hole above the cover plate, then push the card plate and compress the spring to make the card plate disengage from the card slot on the connector, and then rotate the grouting pipe inserted on the cover plate to move the threaded sleeve upward, thereby driving the connecting rod to rotate the connecting plate outward, so that the connecting plate opens in an umbrella shape and the supporting feet are close to the inner wall of the anchor hole, so that the anchor cable device is located in the middle of the anchor hole, thereby ensuring the force balance of the anchor cable device;

[0018] Step 3: pour cement into the grouting pipe, so that cement flows out from the through hole below the grouting pipe, thereby pouring the bottom of the anchor hole, stopping pouring when pouring to the baffle, waiting for the cement to dry, and then pouring through the pouring hole provided on the anchor plate, and then waiting for the cement to dry;

[0019] Step 4. After use, rotate the pull wire to make the protrusion on the inner side of the mounting seat slide in the slot of the connector, then pull out the pull wire and the flexible isolation sleeve to separate the connector from the mounting seat, thereby recovering the pull wire and performing secondary injection fixing.

[0020] Beneficial effects: 1. The mounting seat has a limiting groove toward the center of the base plate, a convex point is provided on the inner side of the mounting seat, a mounting groove is provided on the upper end of the mounting seat, a connector is provided at the end of the pull wire, and an "L"-shaped slot is provided on the outer side of the connector. The "L"-shaped slot fits with the convex point, and the edge of the card plate fits with the "L"-shaped slot, so that the card plate limits the rotation of the connector, so that the pull wire can be quickly disassembled and assembled through the connector and the mounting seat.

[0021] 2. The isolation sleeve is located on the outside of the pull wire. The isolation sleeve is made of flexible materials including rubber. The cement can be isolated through the isolation sleeve so that the pull wire can be rotated, disassembled and recycled after the pouring is completed, thereby avoiding the pull wire from being exposed and corroded, thereby ensuring the stability of the internal structure of the building.

[0022] 3. The threaded sleeve is installed on the grouting pipe through threads. The threaded sleeve is slidably connected to the sliding rod. The lower end of the connecting plate is hinged under the sliding rod. The upper end of the connecting plate is connected to the isolation sleeve through a connecting rod. A support foot is hinged on the outer side of the upper end of the connecting plate. A serrated anti-skid structure is provided on the outer side of the support foot. The threaded sleeve can be moved by rotating the grouting pipe, thereby rotating the connecting plate, so that the support foot contacts the inner wall of the anchor hole, so that the anchor cable device is located in the middle of the anchor hole, thereby ensuring the force balance of the anchor cable device.

[0023] The implementation, functional features and advantages of the present invention will be further described with reference to the embodiments and the accompanying drawings. Description of the Drawings

[0024] Figure 1 is a schematic diagram of the overall structure of the present invention Figure 1 。

[0025] Figure 2 is a schematic diagram of the overall structure of the present invention Figure 2 。

[0026] Figure 3 is the explosion of the present invention Figure 1 。

[0027] Figure 4 is the explosion of the present invention Figure 2 。

[0028] Figure 5 is the cross-section of the connecting device of the present invention Figure 1 。

[0029] Figure 6 is the cross-section of the connecting device of the present invention Figure 2 。

[0030] Figure 7 is the cross-sectional view of the perfusion device of the present invention.

[0031] Figure 8 is the exploded view of the centering device of the present invention.

[0032] Figure 9 is the cross-sectional view of the anchor plate of the present invention.

[0033] Reference numerals: cover plate 1; bottom plate 2; mounting seat 3; bump 4; mounting groove 5; limiting groove 6; clamping plate 7; spring 8; baffle 10; pull wire 11; connecting head 12; clamping groove 13; isolation sleeve 14; grouting pipe 15; threaded sleeve 16; sliding rod 17; connecting plate 18; connecting rod 19; support foot 20; anchor plate 21; anchor sleeve 22; grouting hole 23. Embodiment

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present invention.

[0035] Next, a prestressed anchor cable device and a usage method according to an embodiment of the present invention will be described with reference to the drawings, as Figure 1 - Figure 9As shown, the prestressed anchor cable device and its usage method include a bottom plate 2, and a cover plate 1 is provided above the bottom plate 2. The prestressed anchor cable device and its usage method further include: a connecting device provided above the bottom plate 2 for disassembling and assembling the connection of the guy wire 11; a pouring device provided inside and above the cover plate 1 for pouring cement and adjusting the connecting device; and a centering device provided outside and above the cover plate 1 for positioning the anchor cable device.

[0036] As Figure 3 , Figure 4 , Figure 5 and Figure 6 shown, the prestressed anchor cable device and its usage method include a connecting device. The connecting device includes a mounting seat 3, a clamping plate 7, a guy wire 11, and an isolation sleeve 14. The mounting seats 3 are evenly distributed in a circular pattern above the bottom plate 2. The mounting seats 3 are provided with limiting grooves 6 towards the center direction of the bottom plate 2. There are bump points 4 inside the mounting seats 3. Installation grooves 5 are opened at the upper ends of the mounting seats 3. The clamping plate 7 is slidably installed in the limiting grooves 6 of the mounting seats 3. The lower part of the clamping plate 7 is connected to the bottom plate 2 through a spring 8. The end of the guy wire 11 is provided with a connection head 12. An "L"-shaped clamping groove 13 is provided outside the connection head 12. The "L"-shaped clamping groove 13 fits with the bump point 4. The isolation sleeve 14 is installed in the installation groove 5 of the mounting seat 3. The isolation sleeve 14 is located outside the guy wire 11. The isolation sleeve 14 is made of a flexible material including rubber. The end of the isolation sleeve 14 is provided with an annular protrusion for easy installation and fixation. The edge of the clamping plate 7 fits with the "L"-shaped clamping groove 13, so that the clamping plate 7 limits the rotation of the connection head 12.

[0037] In a specific embodiment: during use, the guy wire 11 is sleeved inside the isolation sleeve 14, and then the connection head 12 is inserted into the mounting seat 3. The bump point 4 inside the mounting seat 3 fits with the clamping groove 13 outside the connection head 12. Then the connection head 12 is rotated so that the bump point 4 is located at the end of the clamping groove 13, so that the connection head 12 cannot be directly pulled out. Then the connection head 12 is clamped by the clamping plate 7 so that the connection head 12 cannot rotate, thus limiting the connection head 12.

[0038] As Figure 3 , Figure 7 and Figure 9 shown, the prestressed anchor cable device and its usage method include a pouring device. The pouring device includes a grouting pipe 15, a baffle 10, and an anchor plate 21. The baffle 10 is connected above the cover plate 1 through evenly distributed sliding rods 17 in a circular pattern. The anchor plate 21 is provided at one end of the guy wire 11. The anchor plate 21 is located at the opening of the anchor hole A. The end of the grouting pipe 15 is connected to the anchor plate 21. The front end of the grouting pipe 15 is provided with a stepped protrusion. The outer side of the front end of the grouting pipe 15 is provided with threads. The grouting pipe 15 is a hollow structure. A through hole is opened at the front end of the grouting pipe 15 to connect the inside. The anchor plate 21 is provided with a stepped through hole whose lower end fits with the isolation sleeve 14 and a pouring hole 23. An anchor sleeve 22 is installed at the upper end of the through hole. The anchor sleeve 22 is sleeved with the guy wire 11. The baffle 10 is provided with a through hole that can pass through the grouting pipe 15 and the isolation sleeve 14.

[0039] In a specific embodiment: During installation, the front end of the grouting pipe 15 is inserted into the cover plate 1 to block the hole above the cover plate 1. Then, the clamping plate 7 is pushed, and the spring 8 is compressed, so that the clamping plate 7 disengages from the card slot 13 on the connector 12.

[0040] During perfusion, perfusion is carried out into the grouting pipe 15, so that the cement flows out from the through hole below the grouting pipe 15, thereby perfusing the bottom of the anchor hole A. When the baffle 10 is reached, perfusion stops, and after the cement dries, perfusion is carried out through the perfusion hole 23 provided on the anchor plate 21, and then wait for the cement to dry.

[0041] During prestressed connection, the building part that needs prestressed treatment is connected through the stay wire 11. Then, the stay wire 11 is pulled by the hydraulic device, so that the stay wire 11 generates a prestressed tension on the building part, thereby carrying out the anchor cable.

[0042] Such as Figure 3 、 Figure 4 、 Figure 7 and Figure 8 As shown, the prestressed anchor cable device and the using method thereof include a centering device. The centering device includes a threaded sleeve 16, a sliding rod 17 and a connecting plate 18. The threaded sleeve 16 is installed on the grouting pipe 15 through threads. The threaded sleeve 16 is slidably connected with the sliding rod 17. The lower end of the connecting plate 18 is hinged below the sliding rod 17. The upper end of the connecting plate 18 is connected with the isolation sleeve 14 through a connecting rod 19. The outer side of the upper end of the connecting plate 18 is hinged with a supporting leg 20, and a serrated anti-slip structure is arranged on the outer side of the supporting leg 20.

[0043] In a specific embodiment: During installation, by rotating the perfusion pipe inserted in the cover plate 1, the threaded sleeve 16 moves upward, thereby driving the connecting rod 19 to make the connecting plate 18 rotate outward, so that the connecting plate 18 opens in an umbrella shape, and the supporting leg 20 is pressed against the inner wall of the anchor hole A, so that the anchor cable device is located in the middle of the anchor hole A, thereby ensuring the force balance of the anchor cable device.

[0044] During recovery, since the stay wire 11 is isolated from the cement by the isolation sleeve 14, after the anchor cable device is used up, by rotating the stay wire 11, the convex point 4 inside the mounting seat 3 slides in the card slot 13 of the connector 12, and then the stay wire 11 and the flexible isolation sleeve 14 are pulled out, so that the connector 12 is separated from the mounting seat 3, thereby recovering the stay wire 11 and carrying out secondary perfusion and fixation.

[0045] Working principle: When in use, the pulling wire 11 is sleeved inside the isolation sleeve 14, and then the connector 12 is inserted into the mounting seat 3. The bumps 4 inside the mounting seat 3 fit into the card slots 13 on the outer side of the connector 12. Then, the connector 12 is rotated so that the bumps 4 are located at the ends of the card slots 13, making it impossible to directly pull out the connector 12. Then, the connector 12 is clamped by the clamping plate 7 to prevent the connector 12 from rotating, thereby limiting the position of the connector 12. Then, this cable anchor device is placed into the anchor hole A. Then, the front end of the grouting pipe 15 is inserted into the cover plate 1 to block the hole above the cover plate 1. Then, the clamping plate 7 is pushed and the spring 8 is compressed to make the clamping plate 7 disengage from the card slot 13 on the connector 12. Then, by rotating the perfusion pipe inserted on the cover plate 1, the threaded sleeve 16 moves upward, thereby driving the connecting rod 19 to rotate the connecting plate 18 outward, so that the connecting plate 18 opens in an umbrella shape and the support feet 20 are pressed against the inner wall of the anchor hole A, making this cable anchor device located in the middle of the anchor hole A, and further ensuring the force balance of this cable anchor device. Then, perfusion is carried out into the grouting pipe 15, so that the cement flows out from the through holes below the grouting pipe 15, thereby perfusing the bottom of the anchor hole A. Stop perfusion when reaching the baffle 10. Wait for the cement to dry and then carry out perfusion through the perfusion holes 23 provided on the anchor plate 21. Then, wait for the cement to dry. During recovery, since the pulling wire 11 is isolated from the cement by the isolation sleeve 14, after the cable anchor device is used up, by rotating the pulling wire 11, the bumps 4 inside the mounting seat 3 slide in the card slots 13 of the connector 12, and then the pulling wire 11 and the flexible isolation sleeve 14 are pulled out to separate the connector 12 from the mounting seat 3, thereby recovering the pulling wire 11 and carrying out secondary perfusion and fixation.

Claims

1. A prestressed anchor cable device, the prestressed anchor cable device includes a bottom plate (2), and a cover plate (1) is provided above the bottom plate (2), characterized in that, The prestressed anchor cable device further includes a connecting device disposed above the bottom plate (2) for disassembling and assembling the connection of the stay wire (11); a perfusion device disposed inside and above the cover plate (1) for cement perfusion and adjustment of the connecting device; and a centering device disposed outside and above the cover plate (1) for positioning the anchor cable device. The connecting device includes a mounting seat (3), a clamping plate (7), a stay wire (11), and an isolation sleeve (14). The mounting seats (3) are evenly distributed in a ring above the bottom plate (2). The clamping plate (7) is slidably connected to the mounting seat (3). The lower part of the clamping plate (7) is connected to the bottom plate (2) through a spring (8). The end of the stay wire (11) is provided with a connection head (12). The isolation sleeve (14) is installed in the installation groove (5) of the mounting seat (3). The isolation sleeve (14) is located outside the stay wire (11). The isolation sleeve (14) is made of a flexible material including rubber. The end of the isolation sleeve (14) is provided with a circular protrusion for easy installation and fixation. The mounting seat (3) is provided with a limiting groove (6) towards the center of the bottom plate (2). The inner side of the mounting seat (3) is provided with a bump (4). The upper end of the mounting seat (3) is provided with an installation groove (5). The outer side of the connection head (12) is provided with an "L"-shaped card slot (13), and the "L"-shaped card slot (13) fits with the bump (4). The edge of the clamping plate (7) fits with the "L"-shaped card slot (13), so that the clamping plate (7) limits the rotation of the connection head (12).

2. A prestressed anchor cable device according to claim 1, characterized in that, The perfusion device includes a grouting pipe (15), a baffle plate (10), and an anchor plate (21). The baffle plate (10) is connected above the cover plate (1) through evenly distributed slide bars (17) in a ring. The anchor plate (21) is arranged at one end of the stay wire (11). The anchor plate (21) is located at the opening of the anchor hole. The end of the grouting pipe (15) is connected to the anchor plate (21). The baffle plate (10) is provided with a through hole through which the grouting pipe (15) and the isolation sleeve (14) can pass.

3. A prestressed anchor cable device according to claim 2, characterized in that, The front end of the grouting pipe (15) is provided with a stepped protrusion. The outer side of the front end of the grouting pipe (15) is provided with a thread. The grouting pipe (15) is a hollow structure. The front end of the grouting pipe (15) is provided with a through hole connecting to the inside.

4. A prestressed anchor cable device according to claim 2, characterized in that, The anchor plate (21) is provided with a stepped through hole whose lower end fits with the isolation sleeve (14) and a perfusion hole (23). The upper end of the stepped through hole is provided with an anchor sleeve (22), and the anchor sleeve (22) is sleeved on the stay wire (11).

5. A prestressed anchor cable device according to claim 2, characterized in that, The centering device includes a threaded sleeve (16), a slide bar (17), and a connecting plate (18). The threaded sleeve (16) is installed on the grouting pipe (15) through a thread. The threaded sleeve (16) is slidably connected to the slide bar (17). The lower end of the connecting plate (18) is hinged below the slide bar (17). The upper end of the connecting plate (18) is connected to the threaded sleeve (16) through a connecting rod (19). The outer side of the upper end of the connecting plate (18) is hinged with a support leg (20), and the outer side of the support leg (20) is provided with a serrated anti-slip structure.

6. A method for using a prestressed anchor cable device, applicable to a prestressed anchor cable device according to claim 5 above, the specific usage steps are as follows: Step 1, the guy wire (11) is sleeved inside the isolation sleeve (14), then the connector (12) is inserted into the mounting seat (3), the convex points (4) inside the mounting seat (3) fit the "L"-shaped card slots (13) outside the connector (12), then the connector (12) is rotated so that the convex points (4) are located at the end of the "L" card slot (13), so that the connector (12) cannot be directly pulled out, and then the connector (12) is clamped by the clamping plate (7) so that the connector (12) cannot rotate, thereby limiting the connector (12). Step 2, the front end of the grouting pipe (15) is inserted into the cover plate (1) to block the hole above the cover plate (1), then the clamping plate (7) is pushed and the spring (8) is compressed so that the clamping plate (7) disengages from the "L"-shaped card slot (13) on the connector (12), and then by rotating the grouting pipe (15) inserted on the cover plate (1), the threaded sleeve (16) moves upward, thereby driving the connecting rod (19) to rotate the connecting plate (18) outward, so that the connecting plate (18) opens in an umbrella shape and the support feet (20) are pressed against the inner wall of the anchor hole, so that the anchor cable device is located in the middle of the anchor hole, thereby ensuring the force balance of the anchor cable device. Step 3, perfusion is carried out into the grouting pipe (15) so that the cement flows out from the through hole below the grouting pipe (15), thereby perfusing the bottom of the anchor hole, and perfusion stops when it reaches the baffle (10), and after waiting for the cement to dry, perfusion is carried out through the perfusion hole (23) provided on the anchor plate (21), and then wait for the cement to dry. Step 4, after use, rotate the pull wire (11) to make the bump (4) inside the mounting seat (3) slide in the "L"-shaped card slot (13) of the connector (12), and then pull out the pull wire (11) and the flexible isolation sleeve (14) to separate the connector (12) from the mounting seat (3), so as to recover the pull wire (11) and perform secondary perfusion fixation.

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