Building foundation safety survey device

Abstract

The present invention relates to the field of foundation survey, and in particular to a building foundation safety survey device. The present invention provides a building foundation safety survey device that can easily record the depth of a steel drill inserted into a building foundation, can alarm for cavities in the building foundation, and can make the steel drill more stable when inserted into the building foundation. A building foundation safety survey device includes a chassis, wheels, and a guide frame, etc.; the lower part of the chassis is rotatably connected to two wheels, and the two wheels are symmetrically arranged, and the upper surface of the chassis is fixedly connected to a guide frame. When the marker moves in a direction away from the drive motor, it will contact the scale and leave a mark on the scale. Each time the steel drill is inserted into the ground, the marker will record the depth of the steel drill inserted into the ground on the scale, thereby obtaining more data, which is convenient for staff to analyze the safety and bearing capacity of the building foundation.

Description

Technical Field

[0001] The present invention relates to the field of foundation survey, and in particular to a building foundation safety survey device. Background Art

[0002] The safety survey of building foundation is to analyze the bearing capacity and other data of the building foundation to determine whether the building foundation is safe. As an important support for high-rise buildings, the safety survey of building foundation is a very important step.

[0003] Existing building foundation safety survey devices are mainly drill probes, which insert the steel drill into the building foundation by striking it, and then analyze the safety of the building base based on the number of strikes required to reach a certain insertion depth. However, the current drill probe device is not convenient for recording the depth of the steel drill inserted into the building foundation during use, and the steel drill is not stable enough during the drilling process, which will cause errors in the data and affect the survey results. Summary of the Invention

[0004] In order to overcome the shortcomings of the existing building foundation safety survey device, the present invention provides a building foundation safety survey device that can easily record the depth of a steel drill inserted into a building foundation, can alarm for voids in the building foundation, and can make the steel drill more stable when inserted into the building foundation.

[0005] The technical implementation scheme of the present invention is: a building foundation safety survey device, including a chassis, wheels, a guide frame, support rods, a sliding frame, a dual-axis motor, a rotating disk, a tension rope, a driving mechanism, a knocking mechanism and a marking mechanism, the lower part of the chassis is rotatably connected to two wheels, and the two wheels are symmetrically arranged, the upper surface of the chassis is fixedly connected to the guide frame, four support rods are fixedly connected between the guide frame and the chassis, the upper part of the guide frame is slidably connected to the sliding frame, the upper surface of the chassis is fixedly connected to the dual-axis motor, the two output shafts of the dual-axis motor are fixedly connected to the rotating disk, each of the rotating disks is wound with a tension rope, and the upper parts of the two tension ropes pass through the guide frame, and the upper parts of the two tension ropes are fixedly connected to the sliding frame, the driving mechanism is arranged on the sliding frame, the knocking mechanism is arranged on the sliding frame, and the marking mechanism is arranged on the sliding frame.

[0006] Optionally, the driving mechanism includes a connecting frame, a driving motor, a large gear, a chain and a toggle block. The sliding frame is fixedly connected to the connecting frame on the side away from the dual-axis motor. The driving motor is fixedly connected between the connecting frame and the sliding frame. The output shaft of the driving motor is fixedly connected to the large gear. The lower part of the connecting frame is rotatably connected to the large gear. A chain is wound between the two large gears. Both of the large gears are engaged with the chain. The toggle block is fixedly connected to the chain.

[0007] Optionally, the knocking mechanism includes a steel chisel, a mounting block, a screw rod, a nut and a weight block. The steel chisel is placed on the lower part of the sliding frame. The lower part of the sliding frame is slidably connected to the mounting block, and the steel chisel is in contact with the mounting block. Two screw rods are fixedly connected to the lower part of the sliding frame, and the two screw rods are symmetrically arranged. Each of the screw rods passes through the mounting block. Each of the screw rods is threadedly connected to a nut, and both nuts are in contact with the mounting block. A weight block is slidably connected to the sliding frame, and the weight block is in contact with the top of the steel chisel.

[0008] Optionally, the bottom of the steel chisel is a conical structure.

[0009] Optionally, the marking mechanism includes a guide rod, a push rack, a return spring, a slide, a marker and a ruler, the lower part of the slide rack is fixedly connected to two guide rods, a push rack is slidably connected between the two guide rods, a return spring is fixedly connected between each guide rod and the push rack, the top of the push rack is fixedly connected to the slide, and the upper part of the slide is slidably connected to the slide, two markers are fixedly connected to the upper part of the slide, two scales are fixedly connected to the guide rack, and the two scales are symmetrically arranged.

[0010] Optionally, an alarm mechanism is also included, which is arranged on a rotating disk. The alarm mechanism includes a rotating frame, a slider, a connecting spring, a mounting rod and an alarm. The rotating frame is fixedly connected to one of the output shafts of the dual-axis motor, and five sliders are slidably connected to the rotating frame. A connecting spring is fixedly connected between each slider and the rotating frame. The upper surface of the chassis is fixedly connected to a mounting rod, and the upper part of the mounting rod is fixedly connected to an alarm.

[0011] Optionally, hydraulic columns are further included, and four hydraulic columns are fixedly connected to the chassis.

[0012] Optionally, a limit plate is further included. The lower part of the guide frame is slidably connected to two limit plates, and the two limit plates are symmetrically arranged. Both of the limit plates are in contact with the steel drill.

[0013] The present invention has the following advantages:

[0014] 1. The toggle block rotates clockwise to contact and squeeze the push frame. After the push frame is squeezed, it will drive the slide and the marker to move in the direction close to the scale, the reset spring will be compressed, and the marker will move in the direction away from the drive motor to contact the scale and leave a mark on the scale. The toggle block continues to rotate clockwise to break away from the contact with the push frame, and the push frame, slide and marker will move in the direction close to the drive motor to reset. The toggle block continues to rotate clockwise to contact the push frame again, and so on. Each time the steel drill is inserted into the ground, the marker will record the depth of the steel drill inserted into the ground on the scale, thereby obtaining more data, which will facilitate the staff to analyze the safety and bearing capacity of the building foundation. When the distance between the marks recorded on the scale is too different, the staff can judge whether there is a pothole under the building foundation based on this.

[0015] 2. When there is a hole under the building foundation where the steel drill is inserted, the steel drill will fall rapidly under the action of gravity. The rapid downward movement of the steel drill will drive the sliding frame to move downward rapidly, causing the tension rope to unwind quickly. The rapid unwinding of the tension rope will drive the rotating disk to rotate rapidly. The rapid rotation of one of the rotating disks will drive the rotating frame, the slider and the connecting spring to rotate rapidly. Under the action of centrifugal force, the five sliders will move away from each other during the rotation process, and the connecting spring will be compressed. The five sliders will rotate and move away from each other and contact the alarm. The alarm will sound an alarm, thereby more intuitively reminding the staff that there is a hole under the building foundation, which is convenient for the staff to judge the safety of the building foundation.

[0016] 3. When conducting a survey, the staff starts the hydraulic column, and the telescopic rod of the hydraulic column will be inserted downward into the building foundation, thereby making the device more stable during the survey. After completing the survey, the staff starts the hydraulic column again, and the telescopic rod of the hydraulic column will be pulled out from the building foundation. After the steel drill is inserted downward into the building foundation for the first time, the limit plate can limit the steel drill, so that the angle of the steel drill inserted into the building foundation remains unchanged, thereby further making the steel drill more stable when inserted into the building foundation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the first three-dimensional structure of the present invention.

[0018] Figure 2 This is a schematic diagram of the second three-dimensional structure of the present invention.

[0019] Figure 3 It is a schematic diagram of the first partial three-dimensional structure of the present invention.

[0020] Figure 4 This is a schematic diagram of a second partial three-dimensional structure of the present invention.

[0021] Figure 5This is a schematic diagram of a first partial three-dimensional structure of the driving mechanism of the present invention.

[0022] Figure 6 Schematic diagram of the second partial three-dimensional structure of the driving mechanism of the present invention.

[0023] Figure 7 It is a partial three-dimensional structural diagram of the chain and the toggle block of the present invention.

[0024] Figure 8 It is a partial three-dimensional structural schematic diagram of the knocking mechanism of the present invention.

[0025] Figure 9 It is a partial three-dimensional structural schematic diagram of the steel drill, screw rod and weight block of the present invention.

[0026] Figure 10 It is a partial three-dimensional structural diagram of the driving mechanism and marking mechanism of the present invention.

[0027] Figure 11 It is a partial three-dimensional structural schematic diagram of the marking mechanism of the present invention.

[0028] Figure 12 This is a schematic diagram of a third partial three-dimensional structure of the present invention.

[0029] Figure 13 For the present invention Figure 12 Schematic diagram of the enlarged three-dimensional structure of A in the middle.

[0030] Figure 14 It is a schematic diagram of the three-dimensional structure of the rotating frame, the sliding block and the connecting spring of the present invention.

[0031] Figure 15 It is a partial three-dimensional structural diagram of the guide frame and the limiting plate of the present invention.

[0032] The meanings of the reference numerals in the figure are: 1: chassis, 2: wheel, 3: guide frame, 4: support rod, 5: sliding frame, 61: dual-axis motor, 62: rotating disk, 63: tension rope, 71: connecting frame, 72: driving motor, 73: large gear, 74: chain, 75: toggle block, 81: steel drill, 82: mounting block, 83: screw rod, 84: nut, 85: weight block, 91: guide rod, 92: push frame, 93: return spring, 94: slide, 95: marker, 96: ruler, 101: rotating frame, 102: slider, 103: connecting spring, 104: mounting rod, 105: alarm, 11: hydraulic column, 12: limit plate. DETAILED DESCRIPTION

[0033] To make the objectives, technical solutions, and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings. It is hereby stated that any directional terms such as "up," "down," "left," "right," "front," "back," "inside," and "outside" that appear or will appear herein are based solely on the accompanying drawings and are not intended to limit the present invention.

[0034] Example 1

[0035] A building foundation safety survey device, such as Figures 1-12 As shown, it includes a chassis 1, wheels 2, a guide frame 3, a support rod 4, a sliding frame 5, a dual-axis motor 61, a rotating disk 62, a tension rope 63, a driving mechanism, a knocking mechanism and a marking mechanism. The lower part of the chassis 1 is rotatably connected to two wheels 2, and the two wheels 2 are symmetrically arranged. The upper surface of the chassis 1 is connected to the guide frame 3 by bolts, and four support rods 4 are connected to the guide frame 3 and the chassis 1 by rivets. The upper part of the guide frame 3 is slidably connected to the sliding frame 5, and the upper surface of the chassis 1 is connected to the dual-axis motor 61 by bolts. The two output shafts of the dual-axis motor 61 are fixedly connected to the rotating disk 62, and a tension rope 63 is wound around each of the rotating disks 62, and the upper parts of the two tension ropes 63 pass through the guide frame 3, and the upper parts of the two tension ropes 63 are fixedly connected to the sliding frame 5. The driving mechanism is arranged on the sliding frame 5, the knocking mechanism is arranged on the sliding frame 5, and the marking mechanism is arranged on the sliding frame 5.

[0036] The driving mechanism includes a connecting frame 71, a driving motor 72, a large gear 73, a chain 74 and a toggle block 75. The sliding frame 5 is connected to the connecting frame 71 by rivets on the side away from the dual-axis motor 61. The driving motor 72 is connected to the connecting frame 71 and the sliding frame 5 by bolts. The output shaft of the driving motor 72 is connected to the large gear 73 by a flat key. The lower part of the connecting frame 71 is rotatably connected to the large gear 73. A chain 74 is wound between the two large gears 73. The chain 74 is used to transmit power. The two large gears 73 are meshed with the chain 74. The chain 74 is connected to the toggle block 75 by bolts.

[0037] The striking mechanism includes a steel drill 81, a mounting block 82, a screw 83, a nut 84, and a weight 85. The steel drill 81 is placed at the bottom of the sliding frame 5. The bottom of the steel drill 81 has a conical structure. The mounting block 82 is slidably connected to the bottom of the sliding frame 5, and the steel drill 81 contacts the mounting block 82. Two screws 83 are symmetrically arranged at the bottom of the sliding frame 5 via rivets. Each screw 83 passes through the mounting block 82. Each screw 83 is threadedly connected to a nut 84, and both nuts 84 contact the mounting block 82. A weight 85 is slidably connected to the sliding frame 5. The weight 85 is used to strike the steel drill 81 and contacts the top of the steel drill 81.

[0038] The marking mechanism includes a guide rod 91, a push frame 92, a return spring 93, a slide 94, a marker 95 and a scale 96. The lower part of the slide frame 5 is connected to two guide rods 91 by bolts, and a push frame 92 is slidably connected between the two guide rods 91. A return spring 93 is connected between each guide rod 91 and the push frame 92 through a hook. The top of the push frame 92 is connected to the slide 94 by rivets, and the upper part of the slide 94 is slidably connected to the slide frame 5. Two markers 95 are fixedly connected to the upper part of the slide 94. Two scales 96 are connected to the guide frame 3 by rivets, and the two scales 96 are symmetrically arranged.

[0039] In actual use, the staff pushes the support rod 4, the support rod 4 will drive the chassis 1, wheel 2 and guide frame 3 to move, the wheel 2 will rotate, and after the staff pushes the device to the position where the survey is required, the staff turns on the dual-axis motor 61. After the dual-axis motor 61 is turned on, it will drive the rotating disk 62 to rotate through the output shaft, and the tension rope 63 will be wound. The tension rope 63 will drive the sliding frame 5, connecting frame 71, drive motor 72, large gear 73, chain 74, toggle block 75, steel drill 81, mounting block 82, screw rod 83, nut 84 and weight block 85 to move upward. After the sliding frame 5 moves upward and contacts the top of the guide frame 3, the staff turns off the dual-axis motor 61. Under the action of gravity, The sliding frame 5, the connecting frame 71, the driving motor 72, the large gear 73, the chain 74, the toggle block 75, the steel drill 81, the mounting block 82, the screw rod 83, the nut 84 and the weight 85 will move downward, and the downward movement of the sliding frame 5 will drive the tension rope 63 to unwind, and the unwinding of the tension rope 63 will drive the rotating disk 62 to rotate in the opposite direction, and the steel drill 81 will partially insert into the building foundation when it moves downward, and then the sliding frame 5, the connecting frame 71, the driving motor 72, the large gear 73, the chain 74, the toggle block 75, the steel drill 81, the mounting block 82, the screw rod 83, the nut 84 and the weight 85 will stop moving downward, and then the staff will start the driving motor 72, and the rotation of the output shaft of the driving motor 72 will drive one of the large gears 73 to rotate in the opposite direction. The clockwise rotation of one of the large gears 73 will drive the chain 74 and the toggle block 75 to rotate clockwise, and the clockwise rotation of the chain 74 will drive the other large gear 73 to rotate clockwise. The clockwise rotation of the toggle block 75 will contact the bottom of the weight block 85, and the toggle block 75 will continue to rotate clockwise to drive the weight block 85 to move upward. The toggle block 75 will continue to rotate clockwise to contact the push frame 92, and the toggle block 75 will continue to rotate clockwise to squeeze the push frame 92. After being squeezed, the push frame 92 will move toward the direction close to the scale 96, and the reset spring 93 will be stretched. The movement of the push frame 92 toward the scale 96 will drive the slide 94 and the marker pen 95 to move away from the drive motor 72. The marker pen 95 5 moves in the direction away from the drive motor 72 and contacts the scale 96. The marker pen 95 continues to move in the direction away from the drive motor 72 and leaves a mark on the scale 96. The toggle block 75 continues to rotate clockwise to break away from the contact with the push frame 92. The toggle block 75 no longer presses the push frame 92, and the return spring 93 is reset. The reset spring 93 drives the push frame 92, the slide 94 and the marker pen 95 to move in the direction close to the drive motor 72 and reset. The toggle block 75 continues to rotate clockwise to break away from the contact with the weight block 85. Under the action of gravity, the weight block 85 moves downward and strikes the top of the steel drill 81. After being struck, the steel drill 81 continues to move downward and penetrates deeper into the building foundation.The steel drill 81 continues to move downward, which will drive the sliding frame 5, the connecting frame 71, the driving motor 72, the large gear 73, the chain 74, the toggle block 75, the mounting block 82, the screw rod 83 and the nut 84 to move downward. The toggle block 75 continues to rotate clockwise and will contact the bottom of the weight block 85 again. The toggle block 75 continues to rotate clockwise and will contact the push frame 92 again. In this way, the weight block 85 will repeatedly hit the top of the steel drill 81. The staff recorded the number of times the steel drill 81 was hit during the process of being fully inserted into the building foundation. The marking pen 95 repeatedly leaves marks on the scale 96, so that each time the steel drill 81 is inserted into the ground, the marking pen 95 records the depth of the steel drill 81 inserted into the ground on the scale 96, so that the staff can analyze the safety and bearing capacity of the building foundation. When the distance between the marks recorded on the scale 96 is too different, the staff can judge whether there is a pit under the building foundation. After the steel drill 81 is fully inserted into the building foundation, the work The staff turns off the drive motor 72, and then the staff starts the dual-axis motor 61 again. The dual-axis motor 61 will drive the rotating disk 62 to rotate through the output shaft again, and the tension rope 63 will be wound up. The tension rope 63 will drive the sliding frame 5, the connecting frame 71, the drive motor 72, the large gear 73, the chain 74, the toggle block 75, the steel drill 81, the mounting block 82, the screw rod 83, the nut 84 and the weight 85 to move upward, thereby pulling the steel drill 81 out of the building foundation and removing the steel drill 81 from the building foundation. After extraction, the staff turns off the dual-axis motor 61. The steel drill 81 will wear out after repeated surveys. When the steel drill 81 is worn to a high degree, the staff unscrews the nut 84 from the screw rod 83, and then removes the mounting block 82 from the screw rod 83. The staff then removes the worn steel drill 81 and replaces it with a new one. After replacing the new steel drill 81, the staff inserts the mounting block 82 back into the screw rod 83 and screws the nut 84 back onto the screw rod 83, thus completing the replacement of the steel drill 81.

[0040] Example 2

[0041] On the basis of Example 1, Figure 13 and Figure 14 As shown, an alarm mechanism is also included, which is arranged on the rotating disk 62. The alarm mechanism includes a rotating frame 101, a slider 102, a connecting spring 103, a mounting rod 104 and an alarm 105. One of the output shafts of the dual-axis motor 61 is connected to the rotating frame 101 by bolts, and five sliders 102 are slidably connected to the rotating frame 101. Each of the sliders 102 is connected to the rotating frame 101 by a hook with a connecting spring 103. The upper surface of the chassis 1 is connected to the mounting rod 104 by bolts, and the upper part of the mounting rod 104 is connected to the alarm 105 by bolts. The alarm 105 is used to remind the staff.

[0042] The rotation of one of the rotating disks 62 will drive the rotating frame 101, the slider 102 and the connecting spring 103 to rotate. When there is a pit under the building foundation where the steel drill 81 is inserted, the steel drill 81 will fall down quickly under the action of gravity. The rapid downward movement of the steel drill 81 will drive the sliding frame 5, the connecting frame 71, the drive motor 72, the large gear 73, the chain 74, the toggle block 75, the mounting block 82, the screw rod 83, the nut 84 and the weight 85 to move downward quickly. The rapid downward movement of the sliding frame 5 will drive the tension rope 63 to unwind quickly, and the rapid unwinding of the tension rope 63 will cause the The rotating disk 62 is driven to rotate rapidly. The rapid rotation of one of the rotating disks 62 will drive the rotating frame 101, the slider 102 and the connecting spring 103 to rotate rapidly. Under the action of centrifugal force, the five sliders 102 will move away from each other during the rotation process, and the connecting spring 103 will be compressed. The five sliders 102 rotate and move away from each other and contact the alarm 105. The alarm 105 will sound an alarm, thereby more intuitively reminding the staff that there is a pothole under the building foundation, which is convenient for the staff to judge the safety of the building foundation.

[0043] Example 3

[0044] On the basis of Example 2, Figure 2 As shown, a hydraulic column 11 is also included, and four hydraulic columns 11 are connected to the chassis 1 through bolts.

[0045] When conducting a survey, the staff starts the hydraulic column 11, and the telescopic rod of the hydraulic column 11 extends and inserts downward into the building foundation, thereby making the device more stable during the survey. After completing the survey, the staff starts the hydraulic column 11 again, and the telescopic rod of the hydraulic column 11 contracts and is pulled out of the building foundation.

[0046] Example 4

[0047] On the basis of Example 3, Figure 12 and Figure 15 As shown, it also includes a limit plate 12. Two limit plates 12 are slidably connected to the lower part of the guide frame 3, and the two limit plates 12 are symmetrically arranged. Both of the limit plates 12 are in contact with the steel drill 81, and the limit plates 12 are used to limit the steel drill 81.

[0048] After the steel drill 81 is inserted downward into the building foundation for the first time, the limiting plate 12 can limit the steel drill 81 so that the angle at which the steel drill 81 is inserted into the building foundation remains unchanged, thereby making the steel drill 81 more stable when inserted into the building foundation.

[0049] Although the present invention has been described in detail with reference to the above embodiments, it will be apparent to those skilled in the art from this disclosure that various changes or modifications may be made to the present invention without departing from the principles and spirit of the invention as defined in the claims. Therefore, the detailed description of the disclosed embodiments is intended to be illustrative only and not to limit the present invention, which is to be defined by the claims.

Claims

1. A building foundation safety survey device, characterized in that: The invention comprises a chassis (1), wheels (2), a guide frame (3), support rods (4), a sliding frame (5), a dual-axis motor (61), a rotating disk (62), a tension rope (63), a driving mechanism, a knocking mechanism and a marking mechanism, wherein the lower portion of the chassis (1) is rotatably connected to two wheels (2), and the two wheels (2) are symmetrically arranged, the upper surface of the chassis (1) is fixedly connected to the guide frame (3), four support rods (4) are fixedly connected between the guide frame (3) and the chassis (1), and the upper portion of the guide frame (3) is slidably connected to a sliding member. The upper surface of the chassis (1) is fixedly connected to a dual-axis motor (61), and the two output shafts of the dual-axis motor (61) are fixedly connected to a rotating disk (62), and each rotating disk (62) is wound with a tension rope (63), and the upper parts of the two tension ropes (63) pass through the guide frame (3), and the upper parts of the two tension ropes (63) are fixedly connected to the sliding frame (5), the driving mechanism is arranged on the sliding frame (5), the knocking mechanism is arranged on the sliding frame (5), and the marking mechanism is arranged on the sliding frame (5); The marking mechanism comprises a guide rod (91), a push frame (92), a return spring (93), a slide (94), a marking pen (95) and a scale (96), wherein the lower portion of the slide frame (5) is fixedly connected to two guide rods (91), a push frame (92) is slidably connected between the two guide rods (91), a return spring (93) is fixedly connected between each guide rod (91) and the push frame (92), a slide frame (94) is fixedly connected to the top of the push frame (92), and the upper portion of the slide frame (94) is slidably connected to the slide frame (5), two marking pens (95) are fixedly connected to the upper portion of the slide frame (94), and two scales (96) are fixedly connected to the upper portion of the guide frame (3), and the two scales (96) are symmetrically arranged; The driving mechanism comprises a connecting frame (71), a driving motor (72), a large gear (73), a chain (74) and a toggle block (75); the sliding frame (5) is fixedly connected to the connecting frame (71) on a side away from the dual-axis motor (61); the driving motor (72) is fixedly connected between the connecting frame (71) and the sliding frame (5); the output shaft of the driving motor (72) is fixedly connected to the large gear (73); the lower part of the connecting frame (71) is rotatably connected to the large gear (73); a chain (74) is wound between the two large gears (73); the two large gears (73) are meshed with the chain (74); and the toggle block (75) is fixedly connected to the chain (74); The knocking mechanism includes a steel drill (81), a mounting block (82), a screw rod (83), a nut (84) and a weight (85). The steel drill (81) is placed on the lower part of the sliding frame (5). The lower part of the sliding frame (5) is slidably connected to the mounting block (82), and the steel drill (81) contacts the mounting block (82). The lower part of the sliding frame (5) is fixedly connected to two screw rods (83), and the two screw rods (83) are symmetrically arranged. Each of the screw rods (83) passes through the mounting block (82). Each of the screw rods (83) is threadedly connected to a nut (84), and the two nuts (84) are in contact with the mounting block (82). The sliding frame (5) is slidably connected to a weight (85), and the weight (85) contacts the top of the steel drill (81).

2. A building foundation safety survey device according to claim 1, characterized in that: The bottom of the steel drill (81) is a conical structure.

3. A building foundation safety survey device according to claim 1, characterized in that: The invention also includes an alarm mechanism, which is arranged on the rotating disk (62). The alarm mechanism includes a rotating frame (101), a slider (102), a connecting spring (103), a mounting rod (104) and an alarm (105). One of the output shafts of the dual-axis motor (61) is fixedly connected to the rotating frame (101). Five sliders (102) are slidably connected to the rotating frame (101). A connecting spring (103) is fixedly connected between each slider (102) and the rotating frame (101). The upper surface of the chassis (1) is fixedly connected to the mounting rod (104), and the upper part of the mounting rod (104) is fixedly connected to the alarm (105).

4. A building foundation safety survey device according to claim 3, characterized in that: It also includes hydraulic columns (11), and four hydraulic columns (11) are fixedly connected to the chassis (1).

5. A building foundation safety survey device according to claim 3, characterized in that: It also includes a limiting plate (12), and the lower part of the guide frame (3) is slidably connected to two limiting plates (12), and the two limiting plates (12) are symmetrically arranged, and both of the limiting plates (12) are in contact with the steel drill (81).

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