Self-locking anchor cable clamp for foundation pit supporting

Abstract

The anchor cable clamp comprises a grouting pipe, an outer sleeve is arranged on the outer side of the right end of the grouting pipe in a sleeved mode, an inner supporting pipe is connected to the inner side of the right end of the grouting pipe in an inserted mode, a fixing ring is fixedly installed at the right end of the outer sleeve and the right end of the inner supporting pipe, and a butt joint pipe and a sleeve are fixedly installed on the right side of the fixing ring. The sleeve is arranged on the outer side of the butt joint pipe in a sleeving mode, a hollow anchor cable is inserted into the butt joint pipe, the outer side of the fixing ring is rotationally connected with an adjusting rotary pipe, a transmission assembly is fixedly installed on the inner side of the adjusting rotary pipe, and an upper clamping assembly and a lower clamping assembly are arranged on the inner wall of the sleeve; an upper set of avoiding grooves and a lower set of avoiding grooves are formed in the surface of the butt joint pipe in a penetrating mode, and the clamping assemblies penetrate through the avoiding grooves and abut against the hollow anchor cable. The hollow anchor cable fixing device has the advantages that the fixing effect is stable, the hollow anchor cable is prevented from being pulled, the self-locking function is achieved, false triggering is prevented, and the hollow anchor cable is convenient to mount and dismount.

Description

Technical Field

[0001] The utility model relates to the technical field of foundation pit support, in particular to a self-locking cable anchor fixture for foundation pit support. Background Technique

[0002] During the foundation pit support process, the support scheme of "cast-in-place pile + cable anchor" can be adopted. When pouring concrete, through a grouting pipe preset inside the cable anchor, the pipeline of the grouting equipment is connected to the cable anchor through a fixture, so as to complete the grouting operation.

[0003] When the fixture between the pipeline of the conventional grouting equipment and the cable anchor is assembled, the operation is rather troublesome. Moreover, during daily use, when the cable anchor or the pipeline of the grouting equipment is subjected to tension, it is easy for the cable anchor and the fixture to become loose, resulting in the spillage of cement slurry, so further improvement can be made. Summary of the Invention

[0004] The purpose of the utility model is to provide a self-locking cable anchor fixture for foundation pit support, so as to solve the problems put forward in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: A self-locking cable anchor fixture for foundation pit support, including a grouting pipe, an outer sleeve is sleeved on the outer side of the right end of the grouting pipe, an inner support pipe is inserted into the inner side of the right end of the grouting pipe, a fixing ring is fixedly installed at the right ends of the outer sleeve and the inner support pipe, a butt joint pipe and a sleeve are fixedly installed on the right side of the fixing ring, the sleeve is sleeved on the outer side of the butt joint pipe, a hollow cable anchor is inserted into the butt joint pipe, an adjusting screw tube is rotatably connected to the outer side of the fixing ring, a transmission assembly is fixedly installed inside the adjusting screw tube, and there are two groups of clamping assemblies arranged up and down on the inner wall of the sleeve; two groups of avoidance grooves are penetrated and opened on the surface of the butt joint pipe, and the clamping assemblies pass through the avoidance grooves and abut against the hollow cable anchor.

[0006] Based on the above, a circular protrusion is integrally formed in the middle of the outer wall of the inner support pipe, the cross section of the circular protrusion is an isosceles trapezoid, threaded holes are arrayed on the circumferential surface of the left end of the outer sleeve, and the outer sleeve is connected with bolts through the threaded holes, and the bolts abut against the outer wall of the grouting pipe.

[0007] Based on the above, clamping discs are respectively attached to both sides of the adjusting screw tube, the two clamping discs are respectively fixedly installed on the outer wall of the outer sleeve and the outer wall of the sleeve, mounting holes are arrayed on the side of the clamping disc facing the adjusting screw tube, sliding columns are slidably connected in the mounting holes, a spring is fixedly installed between one end of the sliding column and the inner wall of the mounting hole, the other end of the sliding column is hemispherical, and hemispherical grooves are arrayed on both sides of the adjusting screw tube, and the sliding columns abut against the inside of the mounting holes.

[0008] Based on the above, a blocking ring is fixedly installed on the circumferential surface of the left end of the docking pipe. Two groups of convex strips are fixedly installed on the circumferential surface of the docking pipe, and the two groups of convex strips are distributed front and back. The two ends of the convex strip are respectively fixedly installed on the right side of the blocking ring and the inner wall of the right side of the sleeve; an arc-shaped groove is opened at the left end of the sleeve, and spiral grooves are arrayed on the inner wall of the right half of the sleeve.

[0009] Based on the above, the transmission assembly includes a turntable sleeved outside the docking pipe. The fixed ring and the blocking ring respectively clamp on both sides of the turntable. A connecting arm is fixedly installed on the circumferential surface of the turntable. The connecting arm passes through the arc-shaped groove and is fixed on the inner wall of the adjusting screw tube. Two arc-shaped insertion plates are fixedly installed on the right side of the turntable, and the two arc-shaped insertion plates are distributed front and back; a sleeve ring is slidably connected to the two arc-shaped insertion plates. Two arc-shaped slots are penetrated and opened at the end of the sleeve ring. The arc-shaped slots are adapted to the arc-shaped insertion plates. Arc-shaped protrusions are fixedly arrayed on the outer wall of the sleeve ring. The arc-shaped protrusions correspond to the spiral grooves one by one, and the arc-shaped protrusions are slidably connected in the spiral grooves; two annular flanges are fixedly installed on the inner wall of the sleeve ring. A sliding ring is clamped between the two annular flanges. Two notches are opened on the inner wall of the sliding ring. The sliding ring is slidably connected to the convex strip through the notches. Two push columns are fixedly installed on the left side of the sliding ring, and the two push columns are distributed up and down.

[0010] Based on the above, the clamping assembly includes two clamping plates fixedly installed on the inner wall of the sleeve. The two clamping plates are distributed front and back. Two inclined grooves are penetrated and opened on the surface of the clamping plate. The two inclined grooves are distributed left and right and are parallel to each other. A pressing block is clamped between the two clamping plates. The pressing block corresponds to the avoidance groove one by one. Two convex columns are fixedly installed on the front and back sides of the pressing block. The convex columns are slidably connected in the inclined grooves.

[0011] Based on the above, the width of the pressing block is equal to the width of the avoidance groove, the length of the pressing block is less than the length of the avoidance groove, and strip-shaped grooves are arrayed on the side of the pressing block facing the avoidance groove.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] In the present utility model, the sliding column abuts against the hemispherical groove on the side of the adjusting screw tube, so that the adjusting screw tube has a large resistance when rotating, preventing the adjusting screw tube from being accidentally triggered to rotate, playing a self-locking role, and the pressing block presses against the surface of the hollow anchor cable along the direction of the inclined groove to clamp and fix the hollow anchor cable to prevent the hollow anchor cable from being pulled; in addition, the outer wall of the adjusting screw tube is designed as a hexagon, and it can be driven to rotate by a wrench, which is convenient for installing the hollow anchor cable in the docking pipe, having the advantages of stable fixing effect, preventing the hollow anchor cable from being pulled, having a self-locking function to prevent accidental triggering, and being convenient for installing and disassembling the hollow anchor cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a three-dimensional structural schematic diagram of the present utility model.

[0015] Figure 2 is a front view sectional structural schematic diagram of the present utility model.

[0016] Figure 3 is a three-dimensional structural schematic diagram of the present utility model in a state where the sleeve and the docking pipe are separated.

[0017] Figure 4 is a three-dimensional structural schematic diagram of the transmission component and the clamping component of the present utility model.

[0018] Figure 5 is a three-dimensional structural schematic diagram of the adjusting screw tube of the present utility model.

[0019] Figure 6 is a three-dimensional exploded structural schematic diagram of the transmission component and the clamping component of the present utility model.

[0020] Explanation of reference numerals in the drawings: 100, grouting pipe; 200, outer sleeve; 300, inner support pipe; 400, fixing ring; 500, docking pipe; 600, sleeve; 700, hollow anchor cable; 800, adjusting screw tube; 900, transmission component; 1000, clamping component;

[0021] 301, annular protrusion; 501, avoidance groove; 502, blocking ring; 503, rib; 601, arc groove; 602, spiral groove;

[0022] 801, clamping disc; 802, mounting hole; 803, sliding column; 804, spring; 805, hemispherical groove;

[0023] 901, turntable; 902, connecting arm; 903, arc-shaped insertion plate; 904, sleeve ring; 905, arc-shaped slot; 906, arc-shaped protrusion; 907, annular flange; 908, sliding ring; 909, notch; 910, push column;

[0024] 1001, clamping plate; 1002, inclined groove; 1003, pressing block; 1004, convex column; 1005, strip-shaped groove. Detailed implementation manners

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0026] Please refer to Figures 1 - 6, A self-locking cable anchor fixture for foundation pit support, including a grouting pipe 100. An outer sleeve 200 is sleeved on the outer side of the right end of the grouting pipe 100. An inner support pipe 300 is inserted into the inner side of the right end of the grouting pipe 100. A fixing ring 400 is fixedly installed at the right ends of the outer sleeve 200 and the inner support pipe 300. A docking pipe 500 and a sleeve 600 are fixedly installed on the right side of the fixing ring 400. The sleeve 600 is sleeved on the outer side of the docking pipe 500. The outer diameters of the sleeve 600 and the outer sleeve 200 are equal. The outer diameter of the fixing ring 400 is greater than the outer diameter of the sleeve 600. A hollow cable anchor 700 is inserted into the docking pipe 500. The inner diameter of the docking pipe 500 is equal to the outer diameter of the hollow cable anchor 700. An adjusting screw tube 800 is rotatably connected to the outer side of the fixing ring 400. The outer wall of the fixing ring 400 is attached to the inner wall of the adjusting screw tube 800. A transmission assembly 900 is fixedly installed inside the adjusting screw tube 800. Two groups of clamping assemblies 1000 are arranged on the inner wall of the sleeve 600; two groups of avoidance grooves 501 are formed through the surface of the docking pipe 500. The clamping assemblies 1000 pass through the avoidance grooves 501 and abut against the hollow cable anchor 700.

[0027] During use, an annular protrusion 301 is integrally formed in the middle of the outer wall of the inner support pipe 300. The cross-section of the annular protrusion 301 is an isosceles trapezoid. Therefore, the distance between the surface of the annular protrusion 301 and the inner wall of the outer sleeve 200 is smaller. When the grouting pipe 100 is inserted between the outer sleeve 200 and the inner support pipe 300, due to the extrusion effect of the annular protrusion 301 on the grouting pipe 100, the grouting pipe 100 is set more firmly between the outer sleeve 200 and the inner support pipe 300. Threaded holes are arrayed on the circumferential surface of the left end of the outer sleeve 200. The outer sleeve 200 is connected with bolts through the threaded holes. The bolts abut against the outer wall of the grouting pipe 100. Therefore, by screwing the bolts, the bolts are pressed against the outer wall of the grouting pipe 100, and the inner support pipe 300 supports on the inner wall of the grouting pipe 100, thereby further fixing the grouting pipe 100.

[0028] Specifically, clamping discs 801 are respectively attached to both sides of the adjusting screw tube 800. The two groups of clamping discs 801 are respectively fixedly installed on the outer wall of the outer sleeve 200 and the outer wall of the sleeve 600. The clamping discs 801 are used to seal both ends of the adjusting screw tube 800 to prevent the cement slurry from entering the inside of the adjusting screw tube 800. On the side of the clamping disc 801 facing the adjusting screw tube 800, mounting holes 802 are arranged in an array. A sliding column 803 is slidably connected in the mounting hole 802. A spring 804 is fixedly installed between one end of the sliding column 803 and the inner wall of the mounting hole 802. The other end of the sliding column 803 is hemispherical. Hemispherical grooves 805 are arranged in an array on both sides of the adjusting screw tube 800. The sliding column 803 abuts in the mounting hole 802. Thus, due to the elasticity of the spring 804, the sliding column 803 tends to abut in the mounting hole 802, so that when the adjusting screw tube 800 rotates, it has a greater resistance to prevent the adjusting screw tube 800 from being accidentally triggered to rotate. In addition, the outer wall of the adjusting screw tube 800 is regular hexagon, and tools such as wrenches can be used to drive the adjusting screw tube 800 to rotate relative to the fixed ring 400.

[0029] A blocking ring 502 is fixedly installed on the circumferential surface of the left end of the docking tube 500. A gap is reserved between the blocking ring 502 and the fixed ring 400. Two groups of convex strips 503 are fixedly installed on the circumferential surface of the docking tube 500, and the two groups of convex strips 503 are distributed front and back. The two ends of the convex strip 503 are respectively fixedly installed on the right side of the blocking ring 502 and the inner wall of the right side of the sleeve 600. An arc-shaped groove 601 is opened at the left end of the sleeve 600. The central angle of the arc-shaped groove 601 is greater than 90 degrees and less than 180 degrees. The inner wall of the right half of the sleeve 600 is provided with spiral grooves 602 in an array, and the spiral grooves 602 are arc-shaped.

[0030] In reality, the transmission assembly 900 includes a turntable 901 sleeved on the outside of the docking tube 500. The fixed ring 400 and the blocking ring 502 are respectively clamped on both sides of the turntable 901. The turntable 901 is limited by the fixed ring 400 and the blocking ring 502, so that the turntable 901 can only rotate on the outside of the docking tube 500. A connecting arm 902 is fixedly installed on the circumferential surface of the turntable 901. The connecting arm 902 passes through the arc-shaped groove 601 and is fixed on the inner wall of the adjusting screw tube 800. Thus, when the adjusting screw tube 800 rotates, the turntable 901 is driven to rotate synchronously.

[0031] Two groups of arc-shaped insertion plates 903 are fixedly installed on the right side of the turntable 901, and the two groups of arc-shaped insertion plates 903 are distributed front and back. A collar 904 is slidably connected to the two groups of arc-shaped insertion plates 903. Two arc-shaped insertion slots 905 are opened through the end of the collar 904. The arc-shaped insertion slots 905 are adapted to the arc-shaped insertion plates 903. Thus, when the turntable 901 rotates, the two groups of arc-shaped insertion plates 903 are driven to rotate synchronously, so that the collar 904 rotates synchronously with the arc-shaped insertion plates 903. And during this process, the collar 904 can slide left or right relative to the arc-shaped insertion plates 903.

[0032] The outer wall of the collar 904 is fixedly provided with arc-shaped protrusions 906 in an array. The arc-shaped protrusions 906 correspond to the spiral grooves 602 one by one, and the arc-shaped protrusions 906 are slidably connected in the spiral grooves 602. Thus, when the arc-shaped insertion plate 903 and the turntable 901 rotate, the collar 904 rotates synchronously with the arc-shaped insertion plate 903, and under the guidance of the spiral grooves 602, the collar 904 rotates and moves leftward or rightward. Two sets of annular flanges 907 are fixedly installed on the inner wall of the collar 904, and a sliding ring 908 is clamped between the two sets of annular flanges 907, enabling the sliding ring 908 to rotate relative to the collar 904.

[0033] Two sets of notches 909 are formed in the inner wall of the sliding ring 908. The sliding ring 908 is slidably connected to the rib 503 through the notches 909. Two sets of push columns 910 are fixedly installed on the left side of the sliding ring 908, and the two sets of push columns 910 are distributed vertically. Thus, when the collar 904 rotates and moves leftward, it drives the sliding ring 908 to move leftward along the rib 503, causing the push columns 910 to move leftward and gradually approach the clamping assembly 1000.

[0034] The clamping assembly 1000 includes two sets of clamping plates 1001 fixedly installed on the inner wall of the sleeve 600. The two sets of clamping plates 1001 are distributed front and back. Two sets of inclined grooves 1002 are formed through the surfaces of the clamping plates 1001. The two sets of inclined grooves 1002 are distributed left and right and are parallel to each other. A pressure block 1003 is clamped between the two sets of clamping plates 1001. The pressure block 1003 corresponds to the avoidance groove 501 one by one. Two sets of convex columns 1004 are fixedly installed on the front and back sides of the pressure block 1003, and the convex columns 1004 are slidably connected in the inclined grooves 1002. The width of the pressure block 1003 is equal to the width of the avoidance groove 501, and the length of the pressure block 1003 is less than the length of the avoidance groove 501. Thus, during the process of the push column 910 moving leftward, it abuts against the right side of the pressure block 1003 and pushes the pressure block 1003 leftward. Under the combined action of the inclined grooves 1002 and the convex columns 1004, the pressure block 1003 is guided, so that the pressure block 1003 moves towards the surface of the hollow anchor cable 700 along the direction of the inclined grooves 1002. When the pressure block 1003 passes through the avoidance groove 501, it abuts against the surface of the hollow anchor cable 700. A plurality of strip-shaped grooves 1005 are formed in an array on the side of the pressure block 1003 facing the avoidance groove 501, further increasing the friction between the pressure block 1003 and the hollow anchor cable 700 and inhibiting the hollow anchor cable 700 from being pulled along its axial direction.

[0035] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.

Claims

1. A self-locking cable anchor clamp for foundation pit support, characterized in that: It includes a grouting pipe. An outer sleeve is sleeved on the outer side of the right end of the grouting pipe. An inner support pipe is inserted into the inner side of the right end of the grouting pipe. A fixing ring is fixedly installed at the right ends of the outer sleeve and the inner support pipe. A butt joint pipe and a sleeve are fixedly installed on the right side of the fixing ring. The sleeve is sleeved on the outer side of the butt joint pipe. A hollow anchor cable is inserted into the butt joint pipe. An adjusting screw pipe is rotatably connected to the outer side of the fixing ring. A transmission component is fixedly installed on the inner side of the adjusting screw pipe. Two sets of clamping components are arranged on the inner wall of the sleeve; Two sets of avoiding grooves are penetrated and opened on the surface of the butt joint pipe. The clamping component passes through the avoiding groove and abuts against the hollow anchor cable.

2. The cable anchor clamp with self-locking for foundation pit support according to claim 1, wherein: An annular protrusion is integrally formed in the middle of the outer wall of the inner support pipe. The cross-section of the annular protrusion is an isosceles trapezoid. Thread holes are arrayed on the circumferential surface of the left end of the outer sleeve. The outer sleeve is connected with bolts through the thread holes, and the bolts abut against the outer wall of the grouting pipe.

3. The cable anchor fixture with self-locking for foundation pit support according to claim 1, characterized in that: Clamping discs are respectively attached to both sides of the adjusting screw pipe. The two clamping discs are respectively fixedly installed on the outer wall of the outer sleeve and the outer wall of the sleeve. Mounting holes are arrayed on the side of the clamping disc facing the adjusting screw pipe. A sliding column is slidably connected in the mounting hole. A spring is fixedly installed between one end of the sliding column and the inner wall of the mounting hole. The other end of the sliding column is hemispherical. Hemispherical grooves are arrayed on both sides of the adjusting screw pipe. The sliding column abuts in the mounting hole.

4. The cable anchor fixture with self-locking for foundation pit support according to claim 1, wherein: A blocking ring is fixedly installed on the circumferential surface of the left end of the butt joint pipe. Two convex strips are fixedly installed on the circumferential surface of the butt joint pipe, and the two convex strips are distributed front and back. The two ends of the convex strip are respectively fixedly installed on the right side of the blocking ring and the inner wall of the right side of the sleeve; An arc-shaped groove is opened at the left end of the sleeve. Spiral grooves are arrayed on the inner wall of the right half of the sleeve.

5. The cable anchor fixture with self-locking for foundation pit support according to claim 4, characterized in that: The transmission component includes a turntable sleeved on the outer side of the butt joint pipe. The fixing ring and the blocking ring respectively clamp both sides of the turntable. A connecting arm is fixedly installed on the circumferential surface of the turntable. The connecting arm passes through the arc-shaped groove and is fixed on the inner wall of the adjusting screw pipe. Two arc-shaped inserting plates are fixedly installed on the right side of the turntable. The two arc-shaped inserting plates are distributed front and back; A sleeve ring is slidably connected to the two arc-shaped inserting plates. Two arc-shaped inserting slots are penetrated and opened at the end of the sleeve ring. The arc-shaped inserting slots are adapted to the arc-shaped inserting plates. Arc-shaped protrusions are arrayed and fixed on the outer wall of the sleeve ring. The arc-shaped protrusions correspond to the spiral grooves one by one, and the arc-shaped protrusions are slidably connected in the spiral grooves; Two annular flanges are fixedly installed on the inner wall of the sleeve ring. A sliding ring is clamped between the two annular flanges. Two notches are opened on the inner wall of the sliding ring. The sliding ring is slidably connected to the convex strip through the notches. Two push columns are fixedly installed on the left side of the sliding ring. The two push columns are distributed up and down.

6. The cable anchor fixture with self-locking for foundation pit support according to claim 1, characterized in that: The clamping component includes two clamping plates fixedly installed on the inner wall of the sleeve. The two clamping plates are distributed front and back. Two inclined grooves are penetrated and opened on the surface of the clamping plate. The two inclined grooves are distributed left and right and are parallel to each other. A pressing block is clamped between the two clamping plates. The pressing block corresponds to the avoiding groove one by one. Two convex columns are fixedly installed on the front and rear sides of the pressing block. The convex columns are slidably connected in the inclined grooves.

7. The cable anchor fixture with self-locking for foundation pit support according to claim 6, characterized in that: The width of the pressing block is equal to the width of the avoidance groove, the length of the pressing block is less than the length of the avoidance groove, and strip-shaped grooves are arranged in an array on the side of the pressing block facing the avoidance groove.

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