Foundation pit slope support pre-stressed anchor cable structure

Abstract

The utility model discloses a foundation pit slope supporting pre-stressed anchor cable structure, and particularly relates to the technical field of anchor cables, the foundation pit slope supporting pre-stressed anchor cable structure comprises an anchorage device, a plurality of through holes are formed in the anchorage device, pre-stressed anchor cables are installed in the through holes in a penetrating mode, clamping plates are arranged on the two sides of the outer wall of each pre-stressed anchor cable, and fixing pipes are arranged on the outer walls of the clamping plates; extrusion plates are arranged on the sides, close to the pre-stressed anchor cables, of the clamping plates; a containing groove corresponding to the extrusion plate is formed in the side, close to the pre-stressed anchor cable, of the clamping plate, and a sliding hole is formed in the center of the interior of the clamping plate. An inclined groove is formed in one side, close to the clamping plate, of the inner wall of the fixing pipe; a fixing ring is fixedly connected to one end, close to the clamping plate, of the outer wall of the fixing pipe; the side, close to the sliding hole, of the extrusion plate is fixedly connected with a sliding block. The anchor cable fixing device has the advantages of being convenient to machine, install and fix, and capable of extruding and fixing the anchor cable in advance during pulling and avoiding prestress loss.

Description

Technical Field

[0001] This utility model relates to the field of anchor cable technology, specifically to a prestressed anchor cable structure for foundation pit slope support. Background Technology

[0002] During the excavation and construction of the foundation pit, it is necessary to reinforce the slope of the foundation pit to avoid safety accidents such as slope collapse or landslides that may affect the construction process. A common method is to install foundation pit slope support. In the installation of foundation pit slope support, prestressed anchor cable structures are used to better fix the slope support, provide tensile strength, and ensure the safety of the support.

[0003] A green construction prestressed anchor cable limiting device, disclosed in CN120159192A, includes an anchor with multiple through holes. Each through hole contains a clamping piece matching the shape of its inner cavity. A pair of symmetrical mounting grooves are formed on the inner wall of each through hole. A pressing block is slidably connected within each mounting groove, and a spring is installed inside the groove. By placing a pair of pressing blocks inside the through holes, the smaller diameter end of the clamping piece is forced to remain in contact with the anchor cable surface during the anchor cable's stretching process. Thus, at the moment of anchor cable rebound, friction immediately drives the clamping piece into the through hole, allowing it to enter the hole completely and deform at the fastest speed. This causes the anchor cable to be immediately fixed under the pressing action of the clamping piece after a short rebound distance, effectively reducing prestress loss and improving construction quality.

[0004] The above-mentioned technical solution has some defects in actual use. When installing the device, it is necessary to open an installation groove inside the insertion hole of the anchor. However, the traditional installation groove is small in size, and it is inconvenient to process the installation groove. This makes the manufacturing process of the anchor complex and the cost high. Moreover, since the extrusion block is set inside the insertion hole, it cannot fit and extrude with the wedge at the beginning of the pulling. As a result, some prestress will still be lost during use. Therefore, the device is not effective in reducing prestress loss. Utility Model Content

[0005] The purpose of this invention is to provide a prestressed anchor cable structure for foundation pit slope support, which solves the problems of inconvenient anchor processing and installation, and limited effect of reducing prestress loss in existing anchor cables.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a prestressed anchor cable structure for foundation pit slope support, including an anchor, wherein the anchor has multiple through holes, and a prestressed anchor cable is installed through each through hole. A clamping plate is provided on both sides of the outer wall of the prestressed anchor cable, and a fixing pipe is provided on the outer wall of the clamping plate. An extrusion plate is provided on the side of the clamping plate close to the prestressed anchor cable.

[0007] The clamping plate has a receiving groove corresponding to the extrusion plate on the side near the prestressed anchor cable, and a sliding hole is provided in the center of the clamping plate.

[0008] An inclined groove is provided on the inner wall of the fixed tube near the clamping plate, and a fixing ring is fixedly connected to the outer wall of the fixed tube near the clamping plate.

[0009] A sliding block is fixedly connected to the side of the extrusion plate near the sliding hole, and an extrusion strip is fixedly connected to the side of the sliding block away from the extrusion plate.

[0010] Preferably, the end of the clamp plate near the fixing tube is inclined toward the side of the prestressed anchor cable, and the inclined surface of the outer wall of the clamp plate corresponds to the inclined groove. The sides of the clamp plates on both sides of the prestressed anchor cable do not contact each other. The outer wall of the fixing tube is provided with a circumferential texture, and the outer wall of the fixing tube is threaded to the inside of the through hole.

[0011] Preferably, the two ends of the extrusion strip are fixedly connected to the two ends of the outer wall of the sliding block, and the end of the extrusion strip near the fixed tube is bent to one side of the extrusion strip.

[0012] Preferably, the sliding block is slidably connected to the inside of the sliding hole, the side of the sliding block near the fixed pipe is inclined toward the side of the prestressed anchor cable, and the inclination degree of the outer wall of the sliding block is the same as the inclination degree of the outer wall of the clamp.

[0013] Preferably, the side wall of the extrusion plate near the prestressed anchor cable is provided with anti-slip texture, and the bend of the extrusion strip is attached to the edge of the inclined groove near the clamping plate.

[0014] Preferably, a nut is fitted onto one end of the outer wall of the prestressed anchor cable near the clamping plate, and the nut is threadedly connected to one end of the outer wall of the fixing pipe, and the inner wall of the prestressed anchor cable is pressed against one end of the clamping plate.

[0015] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0016] 1. The clamping plates are respectively set on both sides of the prestressed anchor cable, so that both the clamping plates and the extrusion plates are in close contact with the outer wall of the prestressed anchor cable. At the same time, the bending part of the extrusion strip on the outer wall of the sliding block can be in close contact with the inside of the inclined groove. Therefore, no additional complex processing of the anchor is required. Since the two clamping plates are not connected to each other, the placement position and number can be easily adjusted according to the diameter of the prestressed anchor cable during installation. Adjustments can be made according to usage requirements. During use, the movement of the prestressed anchor cable can pull the clamping plates to move accordingly, so that the outer wall of the clamping plate is squeezed and in close contact with the inside of the inclined groove, thereby achieving the squeezing and fixing of the prestressed anchor cable by the clamping plates. The processing and use of the device are relatively convenient.

[0017] 2. When the prestressed anchor cable is pulled, it drives the extrusion plates on both sides of the outer wall of the prestressed anchor cable. This causes the extrusion plates to drive the extrusion strips to squeeze against the inclined groove of the fixing pipe via the sliding block. Since the anchor is fixed during use, the position of the fixing pipe is also fixed, causing the extrusion strips to bend and bend. The extrusion strips then drive the sliding block to move along the sliding hole towards the prestressed anchor cable side. This allows the sliding block to drive the extrusion plates to squeeze the prestressed anchor cable first. The extrusion of the prestressed anchor cable can be achieved before the clamping plate contacts the inclined groove, which can effectively avoid the loss of prestress and improve the construction quality. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the anchor of this utility model;

[0021] Figure 3 This is a schematic cross-sectional view of the internal structure of the fixed tube of this utility model;

[0022] Figure 4 This is a cross-sectional view of the connection between the fixing tube and the clamping plate of this utility model;

[0023] Figure 5 This is a cross-sectional view of the internal structure of the clamping plate of this utility model.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Anchor; 101. Through hole; 2. Prestressed anchor cable; 201. Nut; 3. Clamp plate; 301. Receiving groove; 302. Sliding hole; 4. Fixing pipe; 401. Fixing ring; 402. Inclined groove; 5. Extrusion plate; 501. Sliding block; 502. Extrusion strip. Detailed Implementation

[0026] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0027] This utility model provides, for example Figure 1-5The diagram shows a prestressed anchor cable structure for foundation pit slope support, comprising an anchor 1. The anchor 1 has multiple through holes 101, each through which a prestressed anchor cable 2 is installed. A clamping plate 3 is provided on both sides of the outer wall of the prestressed anchor cable 2. A fixing pipe 4 is provided on the outer wall of the clamping plate 3. An extrusion plate 5 is provided on the side of the clamping plate 3 closest to the prestressed anchor cable 2. A receiving groove 301 corresponding to the extrusion plate 5 is provided on the side of the clamping plate 3 closest to the prestressed anchor cable 2. A sliding hole 302 is provided at the center of the clamping plate 3. An inclined groove 402 is provided on the inner wall of the fixing pipe 4 closest to the clamping plate 3. A fixing ring 401 is fixedly connected to the outer wall of the fixing pipe 4 closest to the clamping plate 3. A sliding block 501 is fixedly connected to the side of the extrusion plate 5 closest to the sliding hole 302, and an extrusion strip 502 is fixedly connected to the side of the sliding block 501 furthest from the extrusion plate 5.

[0028] The clamping plates 3 are respectively set on the outer side of the prestressed anchor cable 2, so that both the clamping plates 3 and the extrusion plates 5 are in contact with the outer wall of the prestressed anchor cable 2. At the same time, the clamping plates 3 are close to the inclined groove 402, so that the bent part of the extrusion strip 502 on the outer wall of the sliding block 501 can fit with the inside of the inclined groove 402. Therefore, during installation and use, the through hole 101 inside the anchor 1 does not require additional grooving, and no additional complex processing is required for the anchor 1, making production more convenient. In addition, since the two clamping plates 3 are not connected to each other, it is convenient to install according to the prestressed anchor cable. The diameter of 2 and the placement and quantity of clamping plates 3 can be adjusted according to usage requirements. Moreover, the processing of clamping plates 3 is more convenient. The extrusion strip 502 is driven to bend by the inclined groove 402, thereby driving the sliding block 501 to move along the sliding hole 302 towards the prestressed anchor cable 2 through the extrusion of the extrusion strip 502. This causes the sliding block 501 to drive the extrusion plate 5 to extrude the prestressed anchor cable 2 first. The extrusion of the prestressed anchor cable 2 can be achieved before the clamping plate 3 contacts the inclined groove 402, which can effectively avoid the loss of prestress and improve the construction quality.

[0029] like Figure 2 , Figure 3As shown, the end of the clamping plate 3 near the fixing pipe 4 is inclined towards the side of the prestressed anchor cable 2, and the inclined surface of the outer wall of the clamping plate 3 corresponds to the inclined groove 402. The sides of the clamping plates 3 on both sides of the prestressed anchor cable 2 do not contact each other. The outer wall of the fixing pipe 4 is provided with a circumferential texture. The outer wall of the fixing pipe 4 is threaded to the inside of the through hole 101. A nut 201 is sleeved on the end of the outer wall of the prestressed anchor cable 2 near the clamping plate 3. The nut 201 is threaded to one end of the outer wall of the fixing pipe 4, and the inner wall of the prestressed anchor cable 2 is connected to one end of the clamping plate 3. The two clamping plates 3 are not connected to each other, so during installation, the placement and number of clamping plates 3 can be easily adjusted according to the diameter of the prestressed anchor cable 2. This can be adjusted according to usage requirements, and the processing of clamping plates 3 is also more convenient. During use, the movement of the prestressed anchor cable 2 can pull the clamping plates 3 to move accordingly, so that the outer wall of the clamping plate 3 is squeezed and fitted with the inside of the inclined groove 402, thereby realizing the compression and fixation of the prestressed anchor cable 2 by the clamping plates 3. The processing and use of the device are relatively convenient.

[0030] like Figure 4 , Figure 5 As shown, the two ends of the extrusion strip 502 are fixedly connected to the two ends of the outer wall of the sliding block 501, and the end of the extrusion strip 502 near the fixed tube 4 is bent towards one side. The sliding block 501 is slidably connected to the inside of the sliding hole 302. The side of the sliding block 501 near the fixed tube 4 is inclined towards the side of the prestressed anchor cable 2. The inclination degree of the outer wall of the sliding block 501 is the same as the inclination degree of the outer wall of the clamping plate 3. The side wall of the extrusion plate 5 near the prestressed anchor cable 2 is provided with anti-slip texture. The bend of the extrusion strip 502 is attached to the edge of the inclined groove 402 near the clamping plate 3. The extrusion plate 5 drives the extrusion strip 502 through the sliding block 501. The 02 movement causes the bending point of the extrusion strip 502 to be squeezed against the inclined groove 402 of the fixed pipe 4. Since the anchor 1 is fixed during use, the position of the fixed pipe 4 is also fixed, which causes the extrusion strip 502 to be driven to bend against the inclined groove 402. The extrusion of the extrusion strip 502 drives the sliding block 501 to move along the sliding hole 302 towards the prestressed anchor cable 2. The sliding block 501 then drives the extrusion plate 5 to squeeze the prestressed anchor cable 2 first. The extrusion of the prestressed anchor cable 2 can be achieved before the clamping plate 3 contacts the inclined groove 402, which can effectively avoid the loss of prestress and improve the construction quality.

[0031] During use, the nut 201 can be easily fitted onto the outer wall of the prestressed anchor cable 2, and the fixing pipe 4 can be easily threaded into the through hole 101 inside the anchor 1. Then, the clamping plates 3 can be easily placed on the outer side of the prestressed anchor cable 2, ensuring that both the clamping plates 3 and the extrusion plate 5 are in contact with the outer wall of the prestressed anchor cable 2. Simultaneously, the clamping plates 3 are positioned close to the inclined groove 402, allowing the bent portion of the extrusion strip 502 on the outer wall of the sliding block 501 to fit into the interior of the inclined groove 402. Therefore, during installation and use, the through hole 101 inside the anchor 1 does not require additional... The slotting process eliminates the need for additional complex processing of the anchor 1, making production more convenient. Furthermore, since the two clamping plates 3 are not connected, the placement and number of clamping plates 3 can be easily adjusted according to the diameter of the prestressed anchor cable 2 during installation. This adjustment can be tailored to specific usage requirements. The clamping plates 3 are also easier to process. During use, the movement of the prestressed anchor cable 2 pulls the clamping plates 3 to follow, causing the outer wall of the clamping plates 3 to press and adhere to the inside of the inclined groove 402, thus achieving the compression and fixation of the prestressed anchor cable 2 by the clamping plates 3. The device is convenient to process and use.

[0032] When the prestressed anchor cable 2 is pulled, it can drive the extrusion plates 5 on both sides of the outer wall of the prestressed anchor cable 2. This causes the extrusion plates 5 to move the extrusion strip 502 through the sliding block 501. The bent part of the extrusion strip 502 is then squeezed against the inclined groove 402 of the fixed pipe 4. Since the anchor 1 is fixed during use, the position of the fixed pipe 4 is also fixed. This causes the extrusion strip 502 to bend and bend against the inclined groove 402. The squeezing action of the extrusion strip 502 causes the sliding block 501 to move along the sliding groove 402. The hole 302 moves towards the prestressed anchor cable 2, which causes the sliding block 501 to drive the extrusion plate 5 to extrude the prestressed anchor cable 2 first. The extrusion of the prestressed anchor cable 2 can be achieved before the clamping plate 3 comes into contact with the inclined groove 402, which can effectively avoid the loss of prestress and improve the construction quality. When the clamping plate 3 is extruded into the inclined groove 402, the nut 201 can be rotated to connect with the outer wall of the fixed pipe 4, thereby extruding the clamping plate 3 with the nut 201 and preventing the clamping plate 3 from moving in the opposite direction and detaching.

[0033] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A prestressed anchor cable structure for foundation pit slope support, comprising anchorage (1), characterized in that: The anchor (1) has multiple through holes (101) inside, and prestressed anchor cables (2) are installed through each through hole (101). Clamping plates (3) are provided on both sides of the outer wall of the prestressed anchor cable (2). Fixing pipes (4) are provided on the outer wall of the clamping plates (3). Extrusion plates (5) are provided on the side of the clamping plates (3) close to the prestressed anchor cable (2). The clamping plate (3) has a receiving groove (301) corresponding to the extrusion plate (5) on the side near the prestressed anchor cable (2), and a sliding hole (302) is provided at the center of the interior of the clamping plate (3). An inclined groove (402) is provided on the inner wall of the fixed tube (4) near the clamp (3), and a fixed ring (401) is fixedly connected to the outer wall of the fixed tube (4) near the clamp (3). A sliding block (501) is fixedly connected to the side of the extrusion plate (5) near the sliding hole (302), and an extrusion strip (502) is fixedly connected to the side of the sliding block (501) away from the extrusion plate (5).

2. The prestressed anchor cable structure for foundation pit slope support according to claim 1, characterized in that: The end of the clamp (3) near the fixing tube (4) is inclined toward the side of the prestressed anchor cable (2), and the inclined surface of the outer wall of the clamp (3) corresponds to the inclined groove (402). The sides of the clamp (3) on both sides of the prestressed anchor cable (2) do not contact each other. The outer wall of the fixing tube (4) is provided with a circumferential texture, and the outer wall of the fixing tube (4) is threaded to the inside of the through hole (101).

3. The prestressed anchor cable structure for foundation pit slope support according to claim 1, characterized in that: The two ends of the extrusion strip (502) are fixedly connected to the two ends of the outer wall of the sliding block (501), and the end of the extrusion strip (502) near the fixed tube (4) is bent to one side of the extrusion strip (502).

4. The prestressed anchor cable structure for foundation pit slope support according to claim 1, characterized in that: The sliding block (501) is slidably connected to the inside of the sliding hole (302). The side of the sliding block (501) near the fixed pipe (4) is inclined toward the side of the prestressed anchor cable (2). The degree of inclination of the outer wall of the sliding block (501) is the same as the degree of inclination of the outer wall of the clamp (3).

5. The prestressed anchor cable structure for foundation pit slope support according to claim 1, characterized in that: The extrusion plate (5) has anti-slip texture on one side wall near the prestressed anchor cable (2), and the bend of the extrusion strip (502) is attached to the edge of the inclined groove (402) near the clamping plate (3).

6. The prestressed anchor cable structure for foundation pit slope support according to claim 1, characterized in that: The prestressed anchor cable (2) has a nut (201) fitted on one end of its outer wall near the clamping plate (3). The nut (201) is threaded to one end of the outer wall of the fixing pipe (4), and the inner wall of the prestressed anchor cable (2) is pressed against one end of the clamping plate (3).

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