A civil engineering pile foundation hole detection device

Abstract

The invention relates to the technical field of civil engineering, and discloses a civil engineering pile foundation hole detection device, comprising a cross bar A, both ends of the cross bar A are rotatably connected with connecting rods A, the bottom ends of the connecting rods A are rotatably connected with connecting rods B, a cross bar B is rotatably connected between the bottom ends of the two connecting rods B, a counterweight A is fixedly connected to the top of the cross bar B, the top of the cross bar A is fixedly connected with the counterweight B, the top of the counterweight A is fixedly connected with a traction rope B, both sides of the connecting rod A close to one end of the connecting rod B are rotatably connected with limiting rings, sleeves are fixedly connected in the limiting rings, one end of the sleeve away from the traction rope B is fixedly connected with a damping spring, and one end of the damping spring away from the sleeve is fixedly connected with an arc-shaped baffle. In the civil engineering pile foundation hole detection device, the arc-shaped baffle can shield the connection inflection point of the connecting rod A and the connecting rod B, so as to avoid the problem that soil on the inner wall of the pile foundation hole adheres to the connection inflection point of the connecting rod A and the connecting rod B.

Description

Technical Field

[0001] The invention relates to the technical field of civil engineering, in particular to a civil engineering pile foundation hole detection device. Background Art

[0002] The pile foundation hole is a hole for pouring concrete piles drilled to reinforce the underground foundation and improve the bearing capacity and earthquake resistance of the building foundation. Before using the pile foundation hole, it is generally necessary to inspect the pile foundation hole, mainly to inspect the hole wall diameters of different depths of the pile foundation hole. Then, the data obtained from the inspection is used to draw a rough cross-sectional structure diagram of the pile foundation hole currently being inspected in a two-dimensional form. The internal structure of the pile foundation hole is displayed based on the cross-sectional structure diagram to facilitate the subsequent judgment of whether the pile foundation hole is qualified. At the same time, it is also necessary to check the hole depth and the residue at the bottom of the pile foundation hole. When inspecting the residue at the bottom of the pile foundation hole, an ultrasonic instrument is generally used. Due to the different densities of the inner wall of the pile foundation hole and the residue at the bottom of the hole, the ultrasonic instrument can quickly and accurately measure the amount of residue at the bottom of the hole to ensure safety during subsequent construction.

[0003] When the diameter of the pile foundation hole is detected, a movable hexagonal frame and a rope with a scale are usually used. The hexagonal frame is placed in the pile foundation hole, and then the rope is pulled to compress the hexagonal frame. At this time, the two ends of the hexagonal frame will move toward the hole wall until they are against the hole wall. Then the detection device is taken out, and the aperture value of the current measurement point can be measured according to the offset value of the scale on the rope. Through this method, detection is carried out from the top of the pile foundation hole to the bottom of the pile foundation hole in sequence. By combining all the measured data, the aperture size of the current pile foundation hole at different depths can be measured;

[0004] However, in actual use, since the inner wall of the pile foundation hole is mostly soil, and the soil is wetter as it moves toward the bottom of the hole, after the two sides of the detection device touch the hole wall, the wet soil in the hole wall will adhere to the two ends of the detection device. Since the detection device is a movable hexagonal frame, the first points that come into contact with the hole wall are the connection points on both sides of the hexagonal frame. At this time, if the soil on the hole wall adheres to the connection point, it will cause the connection point to rotate unsmoothly or even get stuck, affecting the efficiency of the entire detection work. For this reason, we propose a civil engineering pile foundation hole detection device. Summary of the invention

[0005] The purpose of the present invention is to provide a civil engineering pile foundation hole detection device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: A civil engineering pile foundation hole detection device, comprising a cross bar A, both ends of the cross bar A are rotatably connected with connecting rods A, the bottom ends of the connecting rods A are rotatably connected with connecting rods B, a cross bar B is rotatably connected between the bottom ends of the two connecting rods B, the cross bar A, connecting rods A, connecting rods B and cross bar B together form a hexagonal frame, a counterweight A is fixedly connected to the top of the cross bar B, the top of the cross bar A is fixedly connected with the counterweight B, the top of the counterweight A is fixedly connected with a traction rope B, and the top of the traction rope B passes through the cross bar A and the counterweight A and extends upward, both sides of the connecting rod A close to one end of the connecting rod B are rotatably connected with limiting rings, and sleeves are fixedly connected in the limiting rings, and one end of the sleeve away from the traction rope B is fixedly connected with a damping spring, and one end of the damping spring away from the sleeve is fixedly connected with an arc-shaped baffle, and an inner rod is slidably sleeved between the sleeves on the same side of the two connecting rods A.

[0007] Preferably, the two inner rods are each provided with a fixedly connected mounting ring, a collar is fixedly connected between the two mounting rings, the collar is sleeved outside the traction rope B, storage grooves are provided on both sides of the inner wall of the collar, a sliding groove is provided on the inner bottom wall of the storage groove, a connecting hole is provided on the inner wall of one side of the storage groove, a transmission cavity is provided on the side of the collar close to the connecting hole, the two sides of the transmission cavity are respectively connected with the connecting holes on the same side, a docking hole is provided on the top of the collar close to the transmission cavity, and the docking hole is connected with the transmission cavity.

[0008] Preferably, mounting seats are fixedly connected to the inner walls on both sides of the ring close to the storage groove, limiting holes are provided on the inner walls on both sides of the mounting seats, limiting shafts are rotatably connected in the limiting holes, a spring is fixedly connected between the limiting shaft and the inner wall of the limiting hole, a clamping plate is fixedly connected between the two limiting shafts on the mounting seat, the traction rope B is located between the two clamping plates, and a plurality of tooth blocks are fixedly connected to the side of the clamping plate close to the traction rope B.

[0009] Preferably, the storage grooves are slidably connected with support frames, the support frames are located below the card plate on the same side thereof, a fixing plate is fixedly connected to the bottom of the support frames, the fixing plate is located in the slide groove and slidably connected to the slide groove, and a fixing spring is fixedly connected between the fixing plate and the inner wall of the slide groove on the same side thereof.

[0010] Preferably, a fixing rod is fixedly connected in the transmission cavity, and both ends of the fixing rod are slidably connected with a transmission seat, a limiting rod is fixedly connected between the transmission seat and the clamping plate on the same side of the transmission seat, and the limiting rod is located in the connecting hole on the same side of the transmission seat and is slidably connected to the inner wall of the connecting hole, a control rod is slidably connected in the docking hole, and a transmission rod is rotatably connected between the bottom end of the control rod and the top of the two transmission seats.

[0011] Preferably, both ends of the fixing rod are fixedly connected to the transmission seat on the same side thereof with limit springs, and the limit springs are sleeved outside the fixing rod, and the top end of the control rod is fixedly connected to a pressing plate.

[0012] Preferably, a mounting hole is opened at one end of the connecting rod A close to the connecting rod B, and a mounting shaft is rotatably connected in the mounting hole. The two ends of the mounting shaft are respectively fixedly connected to the limiting rings on both sides of the connecting rod A, and a torsion spring is fixedly connected between the mounting shaft and the inner wall of the mounting hole.

[0013] Preferably, a limiting plate is fixedly connected to the traction rope B, and the limiting plate is located above the clamping plate.

[0014] Preferably, the arc-shaped baffle is located at the connecting inflection point of the connecting rod A and the connecting rod B on the same side thereof, and the arc-shaped convex surface of the arc-shaped baffle is oriented in the same direction as the connecting point of the connecting rod A and the connecting rod B.

[0015] Preferably, both ends of the top of the cross bar A are fixedly connected with fixing rings, a traction rope A is fixedly connected between the fixing rings, and the bottom of the cross bar B is fixedly connected with a detector.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] When the cross bar A and the cross bar B are brought close to each other, the present invention can squeeze the connecting rod A and the connecting rod B, so that the connection inflection point of the connecting rod A and the connecting rod B moves toward the inner wall of the pile foundation hole. In this process, the connecting rod A will drive the sleeve to move synchronously, so that the arc-shaped blocking piece blocks the connection inflection point of the connecting rod A and the connecting rod B, thereby preventing the soil on the inner wall of the pile foundation hole from adhering to the connection inflection point of the connecting rod A and the connecting rod B, resulting in the problem that the connection between the connecting rod A and the connecting rod B is stuck by the soil. At the same time, the surface of the arc-shaped blocking piece is relatively wide and smooth, so when the diameter of the pile foundation hole is detected, it can provide certain protection for the inner wall of the pile foundation hole;

[0018] The present invention uses a support frame to support and limit the bottom of the card plate, so that the card plate can only rotate upward and cannot rotate downward. At this time, the two card plates contact the traction rope B, so that the traction rope B can drive the card plate to rotate upward during the upward pulling process. At this time, the traction rope B can be smoothly pulled upward, and when the pulling stops, the spring can be used to make the two card plates cooperate to clamp the traction rope B, so that the traction rope B is fixed at the current height, which effectively improves the accuracy of the device for the aperture size;

[0019] When the device is taken out from the pile foundation hole, the device is erected, and then the transmission rod is pressed to drive the transmission seat to move using the operating rod. At this time, the transmission seat can drive the support frame to move toward the receiving groove through the limit rod, and the limiting effect of the support frame on the card plate can be released, so that the card plate can be rotated downward. At this time, the traction rope B is pulled downward with a little force, so that the traction rope B can move downward smoothly, and the cross bar A, connecting rod A, connecting rod B and cross bar B return to their original positions. After that, the transmission rod is loosened, and the support frame can be moved out of the receiving groove using the limit spring and the installation spring, and the card plate can be continuously limited, so that the next pile foundation hole measurement point can be continuously detected, which further improves the auxiliary function of the device for pile foundation hole detection work. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the connection structure of the cross bar A, the connecting rod A, the connecting rod B and the cross bar B of the present invention;

[0022] Figure 3 Schematic diagram of the cross-sectional structure of the connecting rod A of the present invention;

[0023] Figure 4 It is a schematic diagram of the structure of the sleeve and its connecting parts of the present invention;

[0024] Figure 5 It is a schematic diagram of the ring structure of the present invention;

[0025] Figure 6 It is a schematic diagram of the side section of the collar and the transmission cavity structure of the present invention;

[0026] Figure 7 This is a schematic diagram of the structure of the internal components of the transmission chamber of the present invention;

[0027] Figure 8 It is a schematic diagram of the side section of the collar and the receiving groove structure of the present invention;

[0028] Fig. 9 It is a schematic diagram of the cross-sectional structure of the top of the collar of the present invention;

[0029] Fig.10 It is a schematic diagram of the structure of the fixing rod and its connecting parts of the present invention;

[0030] Fig.11 This is a schematic diagram of the cross-sectional structure of the mounting base of the present invention;

[0031] Fig.12 It is a schematic diagram of the structure of the cross bar B of the present invention.

[0032] In the figure: 1, cross bar A; 101, fixing ring; 102, traction rope A; 11, connecting rod A; 111, mounting hole; 12, connecting rod B; 13, cross bar B; 131, detector; 2, limiting ring; 21, mounting shaft; 22, torsion spring; 3, sleeve; 31, damping spring; 32, arc-shaped baffle; 33, inner rod; 4, counterweight A; 41, counterweight B; 42, traction rope B; 43, limiting plate; 5, collar; 5 1. Mounting ring; 52. Storage groove; 53. Slide groove; 54. Connecting hole; 55. Transmission cavity; 56. Docking hole; 6. Mounting seat; 61. Limit hole; 62. Limit shaft; 63. Spring; 64. Card; 65. Gear block; 7. Support frame; 71. Fixed plate; 72. Fixed spring; 8. Fixed rod; 81. Transmission seat; 82. Limit rod; 83. Limit spring; 84. Control rod; 85. Transmission rod; 86. Press plate. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] See also Figure 1-12The present invention provides a technical solution: a civil engineering pile foundation hole detection device, comprising a cross bar A1, both ends of the cross bar A1 are rotatably connected with connecting rods A11, the bottom ends of the connecting rods A11 are rotatably connected with connecting rods B12, a cross bar B13 is rotatably connected between the bottom ends of the two connecting rods B12, the cross bar A1, the connecting rods A11, the connecting rods B12 and the cross bar B13 together form a hexagonal frame, both ends of the top of the cross bar A1 are fixedly connected with fixing rings 101, a traction rope A102 is fixedly connected between the fixing rings 101, a detector 131 is fixedly connected to the bottom of the cross bar B13, the detector 131 is an ultrasonic instrument, which transmits ultrasonic waves into the pile foundation hole and receives the rebounded ultrasonic waves for detection, because the density of the inner wall of the pile foundation hole and the residue at the bottom thereof are different, the reflection effect of the ultrasonic waves is also different, and the amount of residue at the bottom of the pile foundation hole can be detected by the intensity of the reflected ultrasonic waves, and the top of the cross bar B13 is fixedly connected with The top of the crossbar A1 is fixedly connected with a counterweight block A4, and the volume and weight of the counterweight block B41 are larger than those of the counterweight block A4. The top of the counterweight block A4 is fixedly connected with a traction rope B42, and the top of the traction rope B42 passes through the crossbar A1 and the counterweight block A4. When the traction rope B42 is pulled, the middle link of the counterweight block B41 can be used to press down the crossbar A1, so that the hexagonal frame is folded at its current height, and the aperture of the pile foundation hole is checked. A plurality of scale marks are evenly arranged on the traction rope B42, so that after the aperture detection is completed, the current aperture size can be determined according to the offset position of the scale on the traction rope B42, and the traction rope B42 is extended upward. A limit plate 43 is fixedly connected to the traction rope B42, and the limit plate 43 can limit the traction rope B42 and the folding degree of the entire hexagonal frame to avoid the problem that the folding degree of the hexagonal frame is too high, resulting in the inability to smoothly unfold in the pile foundation hole.

[0035] Furthermore, the hexagonal frame composed of the cross bar A1, the cross bar B13, the connecting rod A11 and the connecting rod B12 is the main detection structure of the pile foundation hole detection device. When the pile foundation hole is detected, the hexagonal frame composed of the cross bar A1, the cross bar B13, the connecting rod A11 and the connecting rod B12 is placed into the pile foundation hole using the traction rope A102. When the hexagonal frame is lowered to the topmost measuring point of the pile foundation hole, the traction rope A102 is then fixed to keep the hexagonal frame at the current height. Then the traction rope B42 is pulled upward. At this time, the tension of the traction rope B42 cooperates with the weight of the counterweight block B41 to make the cross bar A1 and the cross bar B13 close to each other, thereby causing the connecting rod A11 and the connecting rod B12 to rotate, so that the connection point of the connecting rod A11 and the connecting rod B12 faces the inside of the pile foundation hole. The wall moves, and when it reaches the inner wall of the pile foundation hole, the traction rope B42 is fixed, and then the traction rope A102 is used to pull the hexagonal frame out of the pile foundation hole, and the pile foundation hole diameter of the measuring point is determined according to the moving point on the traction rope B42, and a record is made, and then the hexagonal frame is put into the pile foundation hole again, and it is lowered to the next measuring point, and the operation is repeated to measure the diameter values ​​of all pile foundation hole measuring points, and then a two-dimensional pile foundation hole diameter diagram is drawn, so that the diameter size of each point of the entire pile foundation hole can be known, thereby knowing whether the internal diameter of the retaining wall pile foundation hole is standard, and when the hexagonal frame is measuring the measuring point at the bottom of the pile foundation hole, the detector 131 is used to cover the residue at the bottom of the pile foundation hole. At this time, the ultrasonic wave emitted by the detector 131 can be used to detect the amount of bottom residue.

[0036] Combined with Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, both sides of the connecting rod A11 close to one end of the connecting rod B12 are rotatably connected to the limit ring 2, and a sleeve 3 is fixedly connected inside the limit ring 2. The end of the sleeve 3 away from the traction rope B42 is fixedly connected to the damping spring 31. The damping spring 31 has a certain damping performance and needs to apply a certain force to shrink. While improving the retractability of both ends of the detection device, it will not affect the accuracy of the detection device for aperture detection. The end of the damping spring 31 away from the sleeve 3 is fixedly connected to an arc-shaped baffle 32, and an inner rod 33 is slidably sleeved between the sleeves 3 on the same side of the two connecting rods A11. The arc-shaped baffle 32 is located at the connecting inflection point of the connecting rod A11 and the connecting rod B12 on the same side, and the arc-shaped convex surface of the arc-shaped baffle 32 faces the connection point of the connecting rod A11 and the connecting rod B12. Similarly, a mounting hole 111 is provided at one end of the connecting rod A11 near the connecting rod B12, and a mounting shaft 21 is rotatably connected in the mounting hole 111. The two ends of the mounting shaft 21 are fixedly connected to the limit rings 2 on both sides of the connecting rod A11, and a torsion spring 22 is fixedly connected between the mounting shaft 21 and the inner wall of the mounting hole 111. During the folding process of the detection device, since a sleeve 3 is inserted into the limit ring 2, the sleeve 3 cooperates with the inner rod 33 to limit the limit rings 2 at both ends, so that the limit ring 2 can rotate along the direction of the sleeve 3. During the rotation of the limit ring 2, the torsion spring 22 can be tightened by using the mounting shaft 21. When the detection device is unfolded, the torsion spring 22 can rebound and drive the limit ring 2 to rotate back to its original position, thereby cooperating with the detection device to shrink the sleeve 3 and the inner rod 33.

[0037] Further, when the connection point of the connecting rod A11 and the connecting rod B12 approaches the inner wall of the pile foundation hole, the connecting rod A11 can drive the limiting ring 2 to rotate with it during its rotation. Since the limiting ring 2 is limited by the sleeve 3, when it rotates with the sleeve 3, it can be limited by the sleeve 3, thereby rotating on its own and pulling the sleeve 3 to extend from the inner rod 33, so that the arc-shaped blocking piece 32 follows the connection point of the connecting rod A11 and the connecting rod B12 and moves toward the inner wall of the pile foundation hole. The arc-shaped blocking piece 32 blocks the connection point of the connecting rod A11 and the connecting rod B12, so as to prevent the mud blocks falling from the inner wall of the pile foundation hole from falling on the connection between the connecting rod A11 and the connecting rod B12. , resulting in the problem that the connection between the connecting rod A11 and the connecting rod B12 is stuck. At the same time, the smooth arc surface of the arc-shaped baffle 32 can reduce the friction between the arc-shaped baffle 32 and the inner wall of the pile foundation hole, so that when the hexagonal frame is taken out, the friction between the inner wall of the pile foundation hole can be reduced. The damping spring 31 can be used to allow the arc-shaped baffle 32 and the sleeve 3 to have a certain contraction ability. When the diameter of the upper measuring point is smaller than the diameter of the lower measuring point, the contractility of the damping spring 31 can be used to directly pull the hexagonal frame out from the measuring point with a smaller diameter, thereby avoiding the problem that the device is stuck in the pile foundation hole after being unfolded at the measuring point below due to the smaller diameter of the measuring point above it.

[0038] Combined with Figure 1 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 and Fig.11 As shown, the two inner rods 33 are both sleeved with fixedly connected mounting rings 51, and a collar 5 is fixedly connected between the two mounting rings 51. The collar 5 is sleeved outside the traction rope B42, and the inner walls of the collar 5 are both provided with receiving grooves 52, and the inner bottom wall of the receiving groove 52 is provided with a sliding groove 53. A connecting hole 54 is provided on the inner wall of one side of the receiving groove 52, and a transmission cavity 55 is provided on the side of the collar 5 close to the connecting hole 54. The two sides of the transmission cavity 55 are respectively connected with the connecting holes 54 on the same side, and a docking hole 56 is provided on the top of the collar 5 close to the transmission cavity 55. The docking hole 56 is connected with the transmission cavity 55, and the collar 5 is close to the receiving groove 55. 2 is fixedly connected with a mounting seat 6, and a limiting hole 61 is provided on the inner walls of both sides of the mounting seat 6. A limiting shaft 62 is rotatably connected in the limiting hole 61, and a spring 63 is fixedly connected between the limiting shaft 62 and the inner wall of the limiting hole 61. A clamping plate 64 is fixedly connected between the two limiting shafts 62 on the mounting seat 6. The traction rope B42 is located between the two clamping plates 64. A plurality of tooth blocks 65 are fixedly connected to the side of the clamping plate 64 close to the traction rope B42. The limiting sheet 43 is located above the clamping plate 64. A support frame 7 is slidably connected in the storage groove 52, and the support frame 7 is located below the clamping plate 64 on the same side thereof.

[0039] Furthermore, the support frame 7 is used to limit the bottom of the card plate 64, so that under normal conditions, the card plate 64 can rotate upward in a horizontal state, but cannot rotate downward in a horizontal state. When the traction rope B42 is pulled up, the force generated by the traction rope B42 during movement is used to drive the card plate 64 to rotate upward, and the traction rope B42 can be pulled up smoothly. During this process, the card plate 64 will drive the spring 63 to tighten through the limiting shaft 62. When the traction rope B42 stops being pulled, the spring 63 starts to rebound, driving the card plate 64 to rotate toward the original position, and the card plate 64 is used to clamp the traction rope B42, so that the traction rope B42 is fixed in the current state, and thereby the current state of the cross bar A1, connecting rod A11, connecting rod B12 and cross bar B13 is maintained, so as to avoid the problem that when the detection device is taken out of the pile foundation hole, the traction rope B42 is not limited and is easy to loosen, resulting in deformation of the hexagonal frame, thereby causing inaccurate measurement data.

[0040] Combined with Figure 7 , Figure 8 , Fig. 9 and Fig.10 As shown, a fixing plate 71 is fixedly connected to the bottom of the support frame 7, and the fixing plate 71 is located in the slide groove 53 and is slidably connected to the slide groove 53. A fixing spring 72 is fixedly connected between the fixing plate 71 and the inner wall of the slide groove 53 on the same side thereof. A fixing rod 8 is fixedly connected in the transmission cavity 55. Both ends of the fixing rod 8 are sleeved with a transmission seat 81 which is slidably connected thereto. A limiting rod 82 is fixedly connected between the transmission seat 81 and the clamping plate 64 on the same side thereof. The limiting rod 82 is located in the connecting hole 54 on the same side thereof and is slidably connected to the inner wall of the connecting hole 54. A control rod 84 is slidably connected in the docking hole 56, and a transmission rod 85 is rotatably connected between the bottom end of the control rod 84 and the tops of the two transmission seats 81. Both ends of the fixing rod 8 are fixedly connected with a limiting spring 83 between the transmission seat 81 on the same side thereof, and the limiting spring 83 is sleeved outside the fixing rod 8. A pressing plate 86 is fixedly connected to the top of the control rod 84.

[0041] Furthermore, after the detection device is taken out from the pile foundation hole, the scale on the traction rope B42 is recorded, and then the hexagonal frame is erected. At this time, the pressing plate 86 is manually squeezed, and the pressing plate 86 is used to drive the transmission rod 85 to descend. During the descent of the transmission rod 85, the transmission seat 81 can be pushed by the operating rod 84, so that the two transmission seats 81 move toward the two ends of the fixed rod 8 respectively, and squeeze the limit spring 83. In the process of the transmission seat 81 moving toward the end of the fixed rod 8, it can drive the support frame 7 to retract toward the storage groove 52 through the limit rod 82. When the support frame 7 moves toward the storage groove 52, the fixing plate 71 at the bottom thereof can be used to squeeze the fixing spring 72. When the support frame 7 is retracted into the storage groove 52, the limiting effect of the support frame 7 on the card plate 64 disappears, so that the card plate 64 can rotate downward. The weight of the counterweight A4 can drive the traction rope B42 to move downward, and use the traction rope B42 to drive the card plate 64 to rotate downward. If the traction rope B42 is still stuck by the card plate 64, the traction rope B42 can be pulled downward with force, and the applied tension can be used to drive the card plate 64 to rotate downward. After that, the hexagonal frame composed of the cross bar A1, the connecting rod A11, the connecting rod B12 and the cross bar B13 can be changed to the initial state, and then the pressing plate 86 is released. At this time, the fixed spring 72 and the limit spring 83 rebound at the same time, and respectively drive the support frame 7 and the transmission seat 81 to move toward the original position. At this time, the support frame 7 will move toward the bottom of the card plate 64, and use the moving force to make the card plate 64 rotate upward and return to the horizontal state. At this time, the support frame 7 continues to support and limit the bottom of the card plate 64, and then the next detection point in the pile foundation hole can be continued to be detected.

[0042] Working principle: Use the traction rope A102 to put the hexagonal frame composed of the cross bar A1, the cross bar B13, the connecting rod A11 and the connecting rod B12 into the pile foundation hole. When the hexagonal frame descends to the uppermost measuring point of the pile foundation hole, the traction rope A102 is then fixed to keep the hexagonal frame at the current height. Then the traction rope B42 is pulled upward. At this time, the tension of the traction rope B42 cooperates with the weight of the counterweight block B41 to close the cross bar A1 and the cross bar B13 to rotate, so that the connecting rod A11 and the connecting rod B12 are rotated, and the connection point of the connecting rod A11 and the connecting rod B12 moves toward the inner wall of the pile foundation hole. When the connection point of the connecting rod A11 and the connecting rod B12 approaches the inner wall of the pile foundation hole, the connecting rod A11 is rotating, and it can drive the limit ring 2 to follow the rotation. Since the limit ring 2 is limited by the casing 3, when it follows the casing 3 When rotating, it can be limited by the sleeve 3, so as to rotate by itself, and pull the sleeve 3 to extend from the inner rod 33, so that the arc-shaped baffle 32 follows the connection point of the connecting rod A11 and the connecting rod B12 and moves toward the inner wall of the pile foundation hole. The arc-shaped baffle 32 is used to block the connection point of the connecting rod A11 and the connecting rod B12, so as to avoid the problem that the connection point of the connecting rod A11 and the connecting rod B12 is stuck due to the mud blocks falling off the inner wall of the pile foundation hole falling on the connection point of the connecting rod A11 and the connecting rod B12. At the same time, the smooth arc surface of the arc-shaped baffle 32 can reduce the friction between the arc-shaped baffle 32 and the inner wall of the pile foundation hole. When the arc-shaped baffle 32 reaches the inner wall of the pile foundation hole, the traction rope B42 is fixed, and then the traction rope A102 is used to pull the hexagonal frame out of the pile foundation hole, and the pile foundation hole diameter at the measuring point is determined according to the moving point on the traction rope B42, and a record is made;

[0043] During the detection process, the support frame 7 is used to limit the bottom of the card plate 64, so that under normal conditions, the card plate 64 rotates upward in a horizontal state, but cannot rotate downward in a horizontal state. When the traction rope B42 is pulled up, the force generated by the traction rope B42 during movement is used to drive the card plate 64 to rotate upward, and the traction rope B42 can be pulled up smoothly. During this process, the card plate 64 will drive the spring 63 to tighten through the limiting shaft 62. When the traction rope B42 stops being pulled, the spring 63 starts to rebound, driving the card plate 64 to rotate toward the original position, and the card plate 64 is used to clamp the traction rope B42, so that the traction rope B42 is fixed in the current state, and thereby the current states of the cross bar A1, the connecting rod A11, the connecting rod B12 and the cross bar B13 are maintained, so as to improve the accuracy of the detection.

[0044] After the detection device is taken out from the pile foundation hole, the scale on the traction rope B42 is recorded, and then the hexagonal frame is erected. At this time, the pressing plate 86 is manually squeezed, and the pressing plate 86 is used to drive the transmission rod 85 to descend. During the descent of the transmission rod 85, the transmission seat 81 can be pushed by the operating rod 84, so that the two transmission seats 81 move toward the two ends of the fixed rod 8 respectively, and the limit spring 83 is squeezed. In the process of the transmission seat 81 moving toward the end of the fixed rod 8, it can drive the support frame 7 to shrink toward the storage groove 52 through the limit rod 82. When the support frame 7 moves toward the storage groove 52, the fixed plate 71 at the bottom thereof can be used to squeeze the fixed spring 72. When the support frame 7 shrinks into the storage groove 52, the limiting effect of the support frame 7 on the card plate 64 disappears, so that the card plate 64 It can rotate downward. At this time, the weight of the counterweight A4 can drive the traction rope B42 to move downward, and use the traction rope B42 to drive the card plate 64 to rotate downward. If the traction rope B42 is still stuck by the card plate 64, the traction rope B42 can be pulled downward with force, and the card plate 64 can be driven to rotate downward by the applied tension. Then the hexagonal frame composed of the cross bar A1, the connecting rod A11, the connecting rod B12 and the cross bar B13 can be changed to the initial state, and then the pressing plate 86 is released. At this time, the fixed spring 72 and the limit spring 83 rebound at the same time, and respectively drive the support frame 7 and the transmission seat 81 to move toward the original position. At this time, the support frame 7 will move toward the bottom of the card plate 64, and use the moving force to make the card plate 64 rotate upward and return to the horizontal state. At this time, the support frame 7 continues to support and limit the bottom of the card plate 64;

[0045] Then, the hexagonal frame is placed into the pile foundation hole again and lowered to the next measuring point. The operation is repeated to measure the diameter values ​​of all pile foundation hole measuring points. Then, a two-dimensional pile foundation hole diameter diagram is drawn to know the diameter size of each point of the entire pile foundation hole, thereby knowing whether the internal diameter of the retaining wall pile foundation hole is standardized. When the hexagonal frame is measuring the measuring point at the bottom of the pile foundation hole, the detector 131 is used to cover the residue at the bottom of the pile foundation hole. At this time, the ultrasonic wave emitted by the detector 131 can detect the amount of bottom residue.

[0046] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A civil engineering pile foundation hole detection device, comprising a cross bar A (1), both ends of the cross bar A (1) are rotatably connected to connecting rods A (11), the bottom ends of the connecting rods A (11) are rotatably connected to connecting rods B (12), a cross bar B (13) is rotatably connected between the bottom ends of the two connecting rods B (12), the cross bar A (1), the connecting rods A (11), the connecting rods B (12) and the cross bar B (13) together form a hexagonal frame, the top of the cross bar B (13) is fixedly connected to a counterweight A (4), the top of the cross bar A (1) is fixedly connected to a counterweight B (41), the top of the counterweight A (4) is fixedly connected to a traction rope B (42), and the top end of the traction rope B (42) passes through the cross bar A (1) and the counterweight A (4) and extends upward, characterized in that: Both sides of the connecting rod A (11) close to one end of the connecting rod B (12) are rotatably connected to a limit ring (2), a sleeve (3) is fixedly connected inside the limit ring (2), an end of the sleeve (3) away from the traction rope B (42) is fixedly connected to a damping spring (31), an end of the damping spring (31) away from the sleeve (3) is fixedly connected to an arc-shaped baffle (32), and an inner sleeve is slidably provided between the sleeves (3) on the same side of the two connecting rods A (11). The inner rod (33) is provided with a fixedly connected mounting ring (51) on each of the two inner rods (33), a sleeve ring (5) is fixedly connected between the two mounting rings (51), the sleeve ring (5) is sleeved outside the traction rope B (42), the inner wall of the sleeve ring (5) is provided with a receiving groove (52) on both sides, the inner bottom wall of the receiving groove (52) is provided with a sliding groove (53), the inner wall of one side of the receiving groove (52) is provided with a connecting hole (54), the sleeve ring (5) is close to the inner wall of the receiving groove (52), and the sleeve ring (5) is provided with a connecting hole (54). A transmission cavity (55) is provided on one side near the communication hole (54), and the two sides of the transmission cavity (55) are respectively connected to the communication hole (54) on the same side. A docking hole (56) is provided on the top of the collar (5) near the transmission cavity (55), and the docking hole (56) is connected to the transmission cavity (55). The inner walls on both sides of the collar (5) near the receiving groove (52) are fixedly connected to mounting seats (6), and the inner walls on both sides of the mounting seats (6) are provided with limited A positioning hole (61), a limiting shaft (62) rotatably connected in the limiting hole (61), a clockwork spring (63) fixedly connected between the limiting shaft (62) and the inner wall of the limiting hole (61), a clamping plate (64) fixedly connected between the two limiting shafts (62) on the mounting seat (6), the traction rope B (42) being located between the two clamping plates (64), and a plurality of tooth blocks (65) fixedly connected to one side of the clamping plate (64) close to the traction rope B (42); A support frame (7) is slidably connected in the receiving groove (52), and the support frame (7) is located below the card plate (64) on the same side thereof. A fixing plate (71) is fixedly connected to the bottom of the support frame (7), and the fixing plate (71) is located in the slide groove (53) and is slidably connected to the slide groove (53). A fixing spring (72) is fixedly connected between the fixing plate (71) and the inner wall of the slide groove (53) on the same side thereof. A fixing rod (8) is fixedly connected in the transmission cavity (55), and both ends of the fixing rod (8) are sleeved with a transmission seat (81) slidably connected. The transmission seat (81) is fixedly connected to the card plate (64) on the same side thereof. 4) are fixedly connected with a limit rod (82), the limit rod (82) is located in the connecting hole (54) on the same side thereof and is slidably connected to the inner wall of the connecting hole (54), a control rod (84) is slidably connected in the docking hole (56), and a transmission rod (85) is rotatably connected between the bottom end of the control rod (84) and the tops of the two transmission seats (81), both ends of the fixed rod (8) are fixedly connected with a limit spring (83) between the transmission seats (81) on the same side thereof, and the limit spring (83) is sleeved outside the fixed rod (8), and the top of the control rod (84) is fixedly connected with a pressing plate (86).

2. A civil engineering pile foundation hole detection device according to claim 1, characterized in that: The connecting rod A (11) is provided with a mounting hole (111) at one end close to the connecting rod B (12), and a mounting shaft (21) is rotatably connected in the mounting hole (111). The two ends of the mounting shaft (21) are fixedly connected to the limiting rings (2) on both sides of the connecting rod A (11), and a torsion spring (22) is fixedly connected between the mounting shaft (21) and the inner wall of the mounting hole (111).

3. A civil engineering pile foundation hole detection device according to claim 2, characterized in that: The traction rope B (42) is fixedly connected to a limiting plate (43), and the limiting plate (43) is located above the clamping plate (64).

4. A civil engineering pile foundation hole detection device according to claim 3, characterized in that: The arc-shaped baffle (32) is located at the connection inflection point of the connecting rod A (11) and the connecting rod B (12) on the same side thereof, and the arc-shaped convex surface of the arc-shaped baffle (32) faces the same direction as the connection point of the connecting rod A (11) and the connecting rod B (12).

5. A civil engineering pile foundation hole detection device according to claim 4, characterized in that: Both ends of the top of the cross bar A (1) are fixedly connected to fixing rings (101), a traction rope A (102) is fixedly connected between the fixing rings (101), and a detector (131) is fixedly connected to the bottom of the cross bar B (13).

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