A deep foundation pit engineering measuring device

Abstract

The application discloses deep foundation pit engineering measuring equipment, belongs to engineering measuring technical field, including for stretching into deep foundation pit and measuring deep foundation pit stretching into mechanism, stretching into mechanism is provided with four installation mechanisms for driving stretching into mechanism and for fixing with concrete support or steel support of deep foundation pit drive mechanism and, the application realizes automatic descending, docking and tightening of end pipe and joint pipe through motor drive friction wheel and gear transmission system, and the connection of multiple joint pipes can be completed without manual intervention, thereby adapting to the foundation pit measuring requirements of different depths, meanwhile, after the completion of measurement, the joint pipe can be automatically reversed and disassembled, the measuring efficiency is improved and manual operation is reduced, the taper head of the end pipe of the stretching into mechanism is provided, when the taper head meets underground pipeline or other obstacles, the taper surface of the taper head can drive the limited swing to deflect, meanwhile, the deflection angle is recorded in real time through the angle sensor, the actual depth of the foundation pit is accurately calculated in combination with the depth of the taper head.

Description

Technical Field

[0001] This invention relates to the field of engineering surveying technology, and in particular to a deep foundation pit engineering surveying device. Background Technology

[0002] In the construction of deep foundation pit projects, accurate measurement of the pit's depth, internal structure, and surrounding environment is crucial for ensuring project safety. Traditional deep foundation pit measurement methods typically employ manual measurement or simple detection equipment, which suffers from low efficiency, insufficient accuracy, and complex operation. Especially in complex geological conditions or where underground pipelines are present, traditional measuring equipment struggles to adapt flexibly and is easily interfered with by obstacles, leading to inaccurate data or equipment damage. Currently, some deep foundation pit measurement equipment uses telescopic rods or segmented structures for depth measurement; however, in practical use, these devices often have the following drawbacks: the equipment's fixation on concrete or steel supports is not secure enough, making it prone to displacement during measurement and affecting accuracy; when encountering underground pipelines or other obstacles, the equipment cannot automatically adjust or avoid them, potentially causing measurement interruptions or equipment damage; the connection and disassembly of connecting pipes usually rely on manual operation, which is inefficient and makes it difficult to ensure the tightness of threaded connections; traditional equipment typically only measures depth and lacks the ability to observe the internal conditions of the foundation pit in real time, failing to meet the needs of complex projects. Therefore, there is an urgent need for a measuring device that can automatically adapt to the deep foundation pit environment, be installed efficiently and stably, have intelligent obstacle avoidance functions, and collect data inside the foundation pit in real time, so as to improve the safety and accuracy of deep foundation pit engineering measurement. Summary of the Invention

[0003] To address the aforementioned technical problems, the present invention adopts the following technical solution: a deep foundation pit engineering measurement device, comprising an extension mechanism for extending into the deep foundation pit to measure the deep foundation pit, the extension mechanism comprising a main frame, and the extension mechanism being provided with a drive mechanism for driving the extension mechanism and four installation mechanisms for fixing to the concrete support or steel support of the deep foundation pit.

[0004] The insertion mechanism includes a limiting rotating frame rotatably mounted on the main frame, a vertical frame fixedly mounted on the limiting rotating frame, two lower friction wheels rotatably mounted on the vertical frame, a docking wheel fixedly mounted on the lower friction wheels, a connecting frame fixedly mounted on the limiting rotating frame, two toothed gears rotatably mounted on the connecting frame, and an outer wheel fixedly mounted on the toothed gears.

[0005] Furthermore, the insertion mechanism also includes an end tube slidably installed in the limiting rotating frame. The end tube is provided with a vertical groove, and the end tube slides in the limiting rotating frame through the vertical groove. An inner top column is slidably installed in the end tube, and a cone head is fixedly installed on the inner top column. An inner top spring is provided between the inner top column and the end tube. A button is provided in the end tube. An external thread is provided at the upper end of the end tube. The cone head is a transparent hollow structure, and a camera is provided inside the cone head.

[0006] Furthermore, an outer rotating rod is rotatably mounted on the connecting frame, and an inner sliding rod is slidably mounted inside the outer rotating rod. The inner sliding rod is rotatably mounted with the main frame, and an angle sensor is installed on the inner sliding rod.

[0007] Furthermore, two upper friction wheels are rotatably mounted on the support frame. The width of the upper friction wheel is greater than that of the lower friction wheel. The width of the lower friction wheel is the same as the width of the vertical groove on the end pipe. An intermediate wheel is rotatably mounted on the support frame. The lower friction wheel drives the intermediate wheel to rotate through the lower transmission belt. The intermediate wheel drives the upper friction wheel to rotate through the upper transmission belt. The rotational speed of the upper friction wheel is greater than that of the lower friction wheel.

[0008] Furthermore, the insertion mechanism also includes a connecting tube with an internal thread at the bottom and an external thread at the top. The connecting tube has a vertical groove with the same width as the vertical groove of the end tube. A turning gear is rotatably mounted on the stand, and the turning gear has an internal protruding key. The connecting tube is inserted into the internal protruding key of the turning gear through a sliding groove.

[0009] Furthermore, a worm gear is rotatably mounted on the connecting frame, and a worm gear is fixedly mounted on the worm gear. The worm gear meshes with a turning gear. A worm is rotatably mounted on the connecting frame, and a worm gear is fixedly mounted on the worm. The worm meshes with the worm gear, and the toothed gear meshes with the worm gear.

[0010] The lower friction wheel rotates via the docking wheel, which in turn drives the intermediate wheel via the lower transmission belt. The intermediate wheel then drives the upper friction wheel via the upper transmission belt. The upper friction wheel rotates at a slightly higher speed than the lower friction wheel. The lower friction wheel causes the end tube to descend relative to the limiting rotating frame, while the upper friction wheel causes the connecting tube to descend. The internal thread at the bottom of the connecting tube engages with the external thread at the top of the end tube. The outer wheel drives the toothed gear to rotate, which in turn drives the worm gear and worm to rotate intermittently. The worm drives the worm wheel and worm gear to rotate, which in turn drives the turning gear and connecting tube to rotate. This causes the connecting tube to rotate as it descends, tightening the internal thread at the bottom of the connecting tube with the external thread at the top of the end tube. When the toothed gear disengages from the worm gear, the connecting tube and the end tube are just tightened. At this point, the end tube and connecting tube continue to descend. Subsequently, other connecting tubes are continuously placed on top of the already connected connecting tubes, thus satisfying the measurement requirements for deep foundation pits of different depths.

[0011] When the end tube descends, if the cone head encounters an obstacle such as a pipeline, the cone surface of the cone head will cause the limiting rotating frame to rotate relative to the main frame. When the limiting rotating frame rotates relative to the main frame, the outer rotating rod causes the inner sliding rod to rotate relative to the main frame, and the inner sliding rod slides relative to the outer rotating rod. The angle sensor on the inner sliding rod can read the angle of the inner sliding rod relative to the main frame. Combined with the depth of the cone head, the depth of the deep foundation pit can be calculated. At the same time, the camera inside the cone head can observe the situation inside the deep foundation pit. When the cone head contacts the bottom of the deep foundation pit, as the end tube continues to descend, the inner top column will slide relative to the end tube, and the inner top spring will be compressed. When the inner top column contacts the button, the motor stops working, indicating that the cone head has reached the bottom of the deep foundation pit.

[0012] After the measurement is completed, the motor reverses, causing the lower and upper friction wheels to reverse as well. Since the upper friction wheel rotates faster than the lower friction wheel, when the connecting tube enters the turning gear, the turning gear will cause the connecting tube to spiral upward, causing the connecting tube to disengage from the connecting tube or end tube below it, thus automatically loosening and removing each connecting tube.

[0013] Furthermore, the drive mechanism includes a motor fixedly mounted on the main frame. A gear shaft, an intermediate gear, an inner gear, and a lower gear are rotatably mounted on the main frame. A side bevel gear is fixedly mounted on the lower gear. An input gear is fixedly mounted on the gear shaft. The motor drives the gear shaft to rotate via an input transmission belt. The input gear meshes with the intermediate gear, the intermediate gear meshes with the inner gear, and the inner gear meshes with the lower gear. A wheel frame is fixedly mounted on the main frame. A spur bevel gear and an upper transmission wheel are rotatably mounted on the wheel frame. The spur bevel gear meshes with the side bevel gear. The spur bevel gear drives the upper transmission wheel to rotate via a vertical transmission belt. The upper transmission wheel drives the docking wheel to rotate via a horizontal transmission belt. The docking wheel is rotatably mounted on the wheel frame.

[0014] Furthermore, a lower rotating rod is rotatably mounted on the gear shaft, an upper rotating rod is rotatably mounted on the lower rotating rod, an outer wheel is rotatably mounted on the upper rotating rod, a rotating rod wheel is rotatably mounted on the lower rotating rod, and the rotating rod wheel is rotatably mounted on the upper rotating rod. The gear shaft drives the rotating rod wheel to rotate via a lower belt, and the rotating rod wheel drives the outer wheel to rotate via an upper belt.

[0015] The motor drives the gear shaft and input gear to rotate via the input transmission belt. The input gear drives the inner gear to rotate via the intermediate gear, which in turn drives the lower gear and side bevel gear to rotate, and the spur bevel gear to rotate. The upper transmission wheel is driven to rotate via the vertical transmission belt, and the docking wheel is driven to rotate via the horizontal transmission belt. The gear shaft drives the rotating rod wheel to rotate via the lower belt, and the rotating rod wheel drives the outer wheel to rotate via the upper belt. When the limit rotating frame rotates relative to the main frame, the lower rotating rod rotates relative to the gear shaft, the upper rotating rod rotates relative to the lower rotating rod, and the upper rotating rod rotates relative to the outer wheel.

[0016] Furthermore, the installation mechanism includes a rotating frame rotatably mounted below the main frame, two clamping frames slidably mounted on the rotating frame, a slope provided below the clamping frames, and a tension spring and a compression spring provided between the clamping frames and the rotating frame.

[0017] Before use, move the main frame to the concrete or steel support in the deep foundation pit, with the slope above the concrete or steel support. Press the main frame down, and with the cooperation of the slope and the concrete or steel support, the clamping frame moves outward, the tension spring is stretched, and the compression spring is compressed. Then, when the concrete or steel support reaches between the two clamping frames, the tension and compression springs rebound, completing the fixation of the equipment to the concrete or steel support.

[0018] The beneficial effects of this invention compared with the prior art are: (1) This invention uses a motor-driven friction wheel and gear transmission system to realize the automatic descent, docking and tightening of the end pipe and the connecting pipe, and can complete the connection of multiple connecting pipes without manual intervention, thereby adapting to the measurement needs of foundation pits at different depths. At the same time, after the measurement is completed, the connecting pipe can be automatically reversed and disassembled, improving the measurement efficiency and reducing manual operation; (2) When the cone of the end pipe of the insertion mechanism set in this invention encounters underground pipelines or other obstacles, the cone surface of the cone can drive the limit rotating frame to deflect, and at the same time, the angle sensor can detect the deflection in real time. Record the deflection angle and combine it with the depth of the cone to accurately calculate the actual depth of the foundation pit. In addition, the cone has a built-in camera to observe the inside of the foundation pit in real time, which improves the comprehensiveness and reliability of the measurement data; (3) The present invention adopts four sets of installation mechanisms. Through the cooperation of the slope, tension spring and compression spring, the equipment can be quickly and stably fixed on the concrete support or steel support to avoid displacement during the measurement process and ensure the accuracy of the measurement data; (4) The present invention achieves precise docking and tightening of the connecting pipe through the synergistic action of the gear set, worm gear, friction wheel and transmission belt. The rotation speed of the upper friction wheel is slightly higher than that of the lower friction wheel to ensure that the connecting pipe can rotate stably and be tightly connected during the descent. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 This is a schematic diagram of the extension mechanism of the present invention. Figure 1 .

[0021] Figure 3 This is a schematic diagram of the extension mechanism of the present invention. Figure 2 .

[0022] Figure 4 This is a schematic diagram of the extension mechanism of the present invention. Figure 3 .

[0023] Figure 5 This is a schematic diagram of the extension mechanism of the present invention. Figure 4 .

[0024] Figure 6 This is a schematic diagram of the drive mechanism structure of the present invention. Figure 1 .

[0025] Figure 7 This is a schematic diagram of the drive mechanism structure of the present invention. Figure 2 .

[0026] Figure 8 This is a schematic diagram of the installation mechanism of the present invention.

[0027] Reference numerals: 101-Main frame; 102-Limiting rotating frame; 103-Upright frame; 104-Lower friction wheel; 105-Upper friction wheel; 106-End tube; 107-Conical head; 108-Inner top column; 109-Inner top spring; 110-Button; 111-Connecting frame; 112-Outer rotating rod; 113-Inner sliding rod; 114-Turning gear; 115-Intermediate wheel; 116-Connecting wheel; 117-Gear with missing tooth; 118-Worm; 119-Worm gear; 120-Outer wheel; 121-Worm wheel; 122-Worm gear; 123-Connecting tube; 124-Lower transmission belt; 125 - Upper drive belt; 201 - Motor; 202 - Input gear; 203 - Input drive belt; 204 - Intermediate gear; 205 - Inner gear; 206 - Side bevel gear; 207 - Positive bevel gear; 208 - Upper drive wheel; 209 - Vertical drive belt; 210 - Horizontal drive belt; 211 - Gear shaft; 212 - Lower rotating rod; 213 - Upper rotating rod; 214 - Rotating rod wheel; 215 - Lower belt; 216 - Upper belt; 217 - Wheel frame; 218 - Lower gear; 301 - Rotating frame; 302 - Clamping frame; 303 - Slope; 304 - Tension spring; 305 - Compression spring. Detailed Implementation

[0028] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0029] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the invention. To better illustrate the embodiments of the invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0030] Example: Figures 1-8 As shown, a deep foundation pit engineering measurement device includes an extension mechanism for extending into the deep foundation pit to measure the deep foundation pit. The extension mechanism includes a main frame 101, and is provided with a drive mechanism for driving the extension mechanism and four installation mechanisms for fixing with the concrete support or steel support of the deep foundation pit.

[0031] The insertion mechanism includes a limiting rotating frame 102 rotatably mounted on the main frame 101, a vertical frame 103 fixedly mounted on the limiting rotating frame 102, two lower friction wheels 104 rotatably mounted on the vertical frame 103, a docking wheel 116 fixedly mounted on the lower friction wheels 104, a connecting frame 111 fixedly mounted on the limiting rotating frame 102, two toothed gears 117 rotatably mounted on the connecting frame 111, and an outer wheel 120 fixedly mounted on the toothed gears 117.

[0032] like Figures 2-5 As shown, the insertion mechanism also includes an end tube 106 slidably installed in the limiting rotating frame 102. The end tube 106 is provided with a vertical groove, and the end tube 106 slides in the limiting rotating frame 102 through the vertical groove. An inner top post 108 is slidably installed in the end tube 106, and a cone head 107 is fixedly installed on the inner top post 108. An inner top spring 109 is provided between the inner top post 108 and the end tube 106. A button 110 is provided in the end tube 106. An external thread is provided at the upper end of the end tube 106. The cone head 107 is a transparent hollow structure, and a camera is provided in the cone head 107.

[0033] like Figures 2-5 As shown, an outer rotating rod 112 is rotatably mounted on the connecting frame 111, and an inner sliding rod 113 is slidably mounted inside the outer rotating rod 112. The inner sliding rod 113 is rotatably mounted with the main frame 101, and an angle sensor is provided on the inner sliding rod 113.

[0034] like Figures 2-5 As shown, two upper friction wheels 105 are rotatably mounted on the support frame 103. The width of the upper friction wheel 105 is greater than the width of the lower friction wheel 104. The width of the lower friction wheel 104 is the same as the width of the vertical groove on the end tube 106. An intermediate wheel 115 is rotatably mounted on the support frame 103. The lower friction wheel 104 drives the intermediate wheel 115 to rotate through the lower transmission belt 124. The intermediate wheel 115 drives the upper friction wheel 105 to rotate through the upper transmission belt 125. The rotational speed of the upper friction wheel 105 is greater than the rotational speed of the lower friction wheel 104.

[0035] like Figures 2-5 As shown, the insertion mechanism also includes a connecting tube 123. The connecting tube 123 has an internal thread at its lower part and an external thread at its upper part. The connecting tube 123 has a vertical groove, the width of which is the same as the width of the vertical groove of the end tube 106. A turning gear 114 is rotatably mounted on the support frame 103. The turning gear 114 has an internal protruding key. The connecting tube 123 is inserted into the internal protruding key of the turning gear 114 through a sliding groove.

[0036] like Figures 2-5As shown, a worm gear 121 is rotatably mounted on the connecting frame 111, and a worm gear 122 is fixedly mounted on the worm gear 121. The worm gear 122 meshes with the turning gear 114. A worm 118 is rotatably mounted on the connecting frame 111, and a worm gear 119 is fixedly mounted on the worm 118. The worm 118 meshes with the worm gear 121, and the toothless gear 117 meshes with the worm gear 119.

[0037] The lower friction wheel 104 is driven to rotate by the docking wheel 116. The lower friction wheel 104 drives the intermediate wheel 115 to rotate via the lower transmission belt 124, and drives the upper friction wheel 105 to rotate via the upper transmission belt 125. The rotational speed of the upper friction wheel 105 is slightly greater than that of the lower friction wheel 104. The lower friction wheel 104 drives the end tube 106 to descend relative to the limiting rotating frame 102. At the same time, the upper friction wheel 105 drives the connecting tube 123 to descend. The internal thread at the bottom of the connecting tube 123 mates with the external thread at the top of the end tube 106. The outer wheel 120 drives the toothed gear 117 to rotate, which in turn drives the worm gear 119 and the worm 118 to rotate intermittently. The worm gear 118 drives the worm wheel 121 and worm gear 122 to rotate. The worm gear 122 drives the turning gear 114 and the connecting tube 123 to rotate, causing the connecting tube 123 to rotate as it descends. This causes the internal thread at the bottom of the connecting tube 123 to tighten with the external thread at the top of the end tube 106. When the toothed gear 117 disengages from the worm gear 119, the connecting tube 123 and the end tube 106 are just tightened. At this time, the end tube 106 and the connecting tube 123 continue to descend. Then, other connecting tubes 123 are continuously placed on top of the already connected connecting tubes 123, thus satisfying the measurement of deep foundation pits at different depths.

[0038] When the end tube 106 descends, if the cone 107 encounters obstacles such as pipelines, the cone surface of the cone 107 will drive the limiting rotating frame 102 to rotate relative to the main frame 101. When the limiting rotating frame 102 rotates relative to the main frame 101, the outer rotating rod 112 drives the inner sliding rod 113 to rotate relative to the main frame 101, and the inner sliding rod 113 slides relative to the outer rotating rod 112. The angle sensor on the inner sliding rod 113 can read the angle of the inner sliding rod 113 relative to the main frame 101. Combined with the depth of the cone 107, the depth of the deep foundation pit can be calculated. At the same time, the camera inside the cone 107 can observe the situation inside the deep foundation pit. When the cone 107 contacts the bottom of the deep foundation pit, as the end tube 106 continues to descend, the inner top column 108 will slide relative to the end tube 106, and the inner top spring 109 will be compressed. When the inner top column 108 contacts the button 110, the motor 201 stops working, indicating that the cone 107 has reached the bottom of the deep foundation pit.

[0039] After the measurement is completed, the motor 201 reverses, driving the lower friction wheel 104 and the upper friction wheel 105 to reverse. Since the speed of the upper friction wheel 105 is greater than that of the lower friction wheel 104, when the connecting tube 123 enters the turning gear 114, the turning gear 114 will drive the connecting tube 123 to spiral upward, so that the connecting tube 123 is disengaged from the connecting tube 123 below it or the end tube 106, thereby automatically loosening and removing each connecting tube 123.

[0040] like Figure 6 , Figure 7 As shown, the drive mechanism includes a motor 201 fixedly mounted on the main frame 101. A gear shaft 211, an intermediate gear 204, an inner gear 205, and a lower gear 218 are rotatably mounted on the main frame 101. A side bevel gear 206 is fixedly mounted on the lower gear 218. An input gear 202 is fixedly mounted on the gear shaft 211. The motor 201 drives the gear shaft 211 to rotate via an input transmission belt 203. The input gear 202 meshes with the intermediate gear 204, and the intermediate gear 204 meshes with… The inner gear 205 meshes with the lower gear 218. A wheel frame 217 is fixedly installed on the main frame 101. A bevel gear 207 and an upper drive wheel 208 are rotatably installed on the wheel frame 217. The bevel gear 207 meshes with the side bevel gear 206. The bevel gear 207 drives the upper drive wheel 208 to rotate through the vertical drive belt 209. The upper drive wheel 208 drives the docking wheel 116 to rotate through the horizontal drive belt 210. The docking wheel 116 is rotatably installed with the wheel frame 217.

[0041] like Figure 6 , Figure 7 As shown, a lower rotating rod 212 is rotatably mounted on the gear shaft 211, and an upper rotating rod 213 is rotatably mounted on the lower rotating rod 212. The outer wheel 120 is rotatably mounted to the upper rotating rod 213. A rotating rod wheel 214 is rotatably mounted on the lower rotating rod 212 and is rotatably mounted to the upper rotating rod 213. The gear shaft 211 drives the rotating rod wheel 214 to rotate via the lower belt 215, and the rotating rod wheel 214 drives the outer wheel 120 to rotate via the upper belt 216.

[0042] The motor 201 drives the gear shaft 211 and the input gear 202 to rotate via the input transmission belt 203. The input gear 202 drives the inner gear 205 to rotate via the intermediate gear 204, drives the lower gear 218 and the side bevel gear 206 to rotate, drives the spur bevel gear 207 to rotate, drives the upper transmission wheel 208 to rotate via the vertical transmission belt 209, and drives the docking wheel 116 to rotate via the horizontal transmission belt 210. The gear shaft 211 drives the rotating rod wheel 214 to rotate via the lower belt 215, and the rotating rod wheel 214 drives the outer wheel 120 to rotate via the upper belt 216. When the limiting rotating frame 102 rotates relative to the main frame 101, the lower rotating rod 212 rotates relative to the gear shaft 211, the upper rotating rod 213 rotates relative to the lower rotating rod 212, and the upper rotating rod 213 rotates relative to the outer wheel 120.

[0043] like Figure 8 As shown, the installation mechanism includes a rotating frame 301 rotatably mounted below the main frame 101. Two clamping frames 302 are slidably mounted on the rotating frame 301. A slope 303 is provided below the clamping frames 302. A tension spring 304 and a compression spring 305 are provided between the clamping frames 302 and the rotating frame 301.

[0044] Before use, move the main frame 101 to the concrete or steel support of the deep foundation pit, with the slope 303 above the concrete or steel support. Press the main frame 101 down, and with the cooperation of the slope 303 and the concrete or steel support, the clamping frame 302 moves outward, the tension spring 304 is stretched, and the compression spring 305 is compressed. Then, when the concrete or steel support reaches between the two clamping frames 302, the tension spring 304 and the compression spring 305 rebound, completing the fixation of the equipment to the concrete or steel support.

[0045] The working principle of the deep foundation pit engineering surveying equipment disclosed in this invention is as follows: Before use, the main frame 101 is moved to the concrete support or steel support of the deep foundation pit, with the slope 303 located above the concrete support or steel support. The main frame 101 is pressed down, and with the cooperation of the slope 303 and the concrete support or steel support, the clamping frame 302 moves outward, the tension spring 304 is stretched, and the compression spring 305 is compressed. Subsequently, when the concrete support or steel support reaches between the two clamping frames 302, the tension spring 304 and the compression spring 305 rebound, completing the fixation of the equipment to the concrete support or steel support. The motor 201 drives the gear shaft 211 and the input gear 202 to rotate via the input transmission belt 203. The input gear 202 drives the inner gear 205 to rotate via the intermediate gear 204, drives the lower gear 218 and the side bevel gear 206 to rotate, drives the spur bevel gear 207 to rotate, drives the upper transmission wheel 208 to rotate via the vertical transmission belt 209, and drives the docking wheel 116 to rotate via the horizontal transmission belt 210. The gear shaft 211 drives the rotating rod wheel 214 to rotate via the lower belt 215, and the rotating rod wheel 214 drives the outer wheel 120 to rotate via the upper belt 216. When the limiting rotating frame 102 rotates relative to the main frame 101, the lower rotating rod 212 rotates relative to the gear shaft 211, the upper rotating rod 213 rotates relative to the lower rotating rod 212, and the upper rotating rod 213 rotates relative to the outer wheel 120. The lower friction wheel 104 is driven to rotate by the docking wheel 116. The lower friction wheel 104 drives the intermediate wheel 115 to rotate via the lower transmission belt 124, and drives the upper friction wheel 105 to rotate via the upper transmission belt 125. The rotational speed of the upper friction wheel 105 is slightly greater than that of the lower friction wheel 104. The lower friction wheel 104 drives the end tube 106 to descend relative to the limiting rotating frame 102. At the same time, the upper friction wheel 105 drives the connecting tube 123 to descend. The internal thread at the bottom of the connecting tube 123 mates with the external thread at the top of the end tube 106. The outer wheel 120 drives the toothed gear 117 to rotate, which in turn drives the worm gear 119 and the worm 118 to rotate intermittently. The worm gear 118 drives the worm wheel 121 and worm gear 122 to rotate. The worm gear 122 drives the turning gear 114 and the connecting tube 123 to rotate, causing the connecting tube 123 to rotate as it descends. This causes the internal thread at the bottom of the connecting tube 123 to tighten with the external thread at the top of the end tube 106. When the toothed gear 117 disengages from the worm gear 119, the connecting tube 123 and the end tube 106 are just tightened. At this time, the end tube 106 and the connecting tube 123 continue to descend. Then, other connecting tubes 123 are continuously placed on top of the already connected connecting tubes 123, thus satisfying the measurement of deep foundation pits at different depths.When the end tube 106 descends, if the cone 107 encounters obstacles such as pipelines, the cone surface of the cone 107 will drive the limiting rotating frame 102 to rotate relative to the main frame 101. When the limiting rotating frame 102 rotates relative to the main frame 101, the outer rotating rod 112 drives the inner sliding rod 113 to rotate relative to the main frame 101, and the inner sliding rod 113 slides relative to the outer rotating rod 112. The angle sensor on the inner sliding rod 113 can read the angle of the inner sliding rod 113 relative to the main frame 101. Combined with the depth of the cone 107, the depth of the deep foundation pit can be calculated. At the same time, the camera inside the cone 107 can observe the situation inside the deep foundation pit. When the cone 107 contacts the bottom of the deep foundation pit, as the end tube 106 continues to descend, the inner top column 108 will slide relative to the end tube 106, and the inner top spring 109 will be compressed. When the inner top column 108 contacts the button 110, the motor 201 stops working, indicating that the cone 107 has reached the bottom of the deep foundation pit. After the measurement is completed, the motor 201 reverses, driving the lower friction wheel 104 and the upper friction wheel 105 to reverse. Since the speed of the upper friction wheel 105 is greater than that of the lower friction wheel 104, when the connecting tube 123 enters the turning gear 114, the turning gear 114 will drive the connecting tube 123 to spiral upward, so that the connecting tube 123 is disengaged from the connecting tube 123 below it or the end tube 106, thereby automatically loosening and removing each connecting tube 123.

[0046] This invention is not limited to the specific embodiments described above. Any modifications made by those skilled in the art based on the above concept without creative effort are within the protection scope of this invention.

Claims

1. A deep foundation pit engineering surveying device, comprising an insertion mechanism for extending into the deep foundation pit to measure the deep foundation pit, characterized in that: The extension mechanism includes a main frame (101), and the extension mechanism is provided with a drive mechanism for driving the extension mechanism and four installation mechanisms for fixing with the concrete support or steel support of the deep foundation pit. The extension mechanism includes a limiting rotating frame (102) rotatably mounted on the main frame (101), a vertical frame (103) fixedly mounted on the limiting rotating frame (102), two lower friction wheels (104) rotatably mounted on the vertical frame (103), a docking wheel (116) fixedly mounted on the lower friction wheels (104), a connecting frame (111) fixedly mounted on the limiting rotating frame (102), two toothed gears (117) rotatably mounted on the connecting frame (111), and an outer wheel (120) fixedly mounted on the toothed gears (117). The insertion mechanism also includes an end tube (106) that is slidably installed in a limiting rotating frame (102). The end tube (106) is provided with a vertical groove. The end tube (106) slides in the limiting rotating frame (102) through the vertical groove. An inner top column (108) is slidably installed in the end tube (106). A cone head (107) is fixedly installed on the inner top column (108). An inner top spring (109) is provided between the inner top column (108) and the end tube (106). A button (110) is provided in the end tube (106). An external thread is provided at the upper end of the end tube (106). The cone head (107) is a transparent hollow structure. A camera is provided in the cone head (107). Two upper friction wheels (105) are rotatably mounted on the support frame (103). The width of the upper friction wheel (105) is greater than the width of the lower friction wheel (104). The width of the lower friction wheel (104) is the same as the width of the vertical groove on the end tube (106). An intermediate wheel (115) is rotatably mounted on the support frame (103). The lower friction wheel (104) drives the intermediate wheel (115) to rotate through the lower transmission belt (124). The intermediate wheel (115) drives the upper friction wheel (105) to rotate through the upper transmission belt (125). The rotational speed of the upper friction wheel (105) is greater than the rotational speed of the lower friction wheel (104). The insertion mechanism also includes a connecting tube (123), which has an internal thread at the bottom and an external thread at the top. The connecting tube (123) has a vertical groove, the width of which is the same as the width of the vertical groove of the end tube (106). A turning gear (114) is rotatably mounted on the support frame (103), and the turning gear (114) has an inner protruding key. The connecting tube (123) is inserted into the inner protruding key of the turning gear (114) through a sliding groove.

2. The deep foundation pit engineering surveying equipment according to claim 1, characterized in that: An outer rotating rod (112) is rotatably mounted on the connecting frame (111), and an inner sliding rod (113) is slidably mounted inside the outer rotating rod (112). The inner sliding rod (113) is rotatably mounted with the main frame (101), and an angle sensor is provided on the inner sliding rod (113).

3. The deep foundation pit engineering surveying equipment according to claim 1, characterized in that: A worm gear (121) is rotatably mounted on the connecting frame (111), and a worm gear (122) is fixedly mounted on the worm gear (121). The worm gear (122) meshes with the turning gear (114). A worm (118) is rotatably mounted on the connecting frame (111), and a worm gear (119) is fixedly mounted on the worm (118). The worm (118) meshes with the worm gear (121), and the toothless gear (117) meshes with the worm gear (119).

4. The deep foundation pit engineering surveying equipment according to claim 1, characterized in that: The drive mechanism includes a motor (201) fixedly mounted on the main frame (101). A gear shaft (211), an intermediate gear (204), an inner gear (205), and a lower gear (218) are rotatably mounted on the main frame (101). A side bevel gear (206) is fixedly mounted on the lower gear (218). An input gear (202) is fixedly mounted on the gear shaft (211). The motor (201) drives the gear shaft (211) to rotate via an input transmission belt (203). The input gear (202) meshes with the intermediate gear (204), and the intermediate gear (204) meshes with the inner bevel gear (205). Gear (205) meshes, inner gear (205) meshes with lower gear (218), wheel frame (217) is fixedly installed on main frame (101), bevel gear (207) and upper drive wheel (208) are rotatably installed on wheel frame (217), bevel gear (207) meshes with side bevel gear (206), bevel gear (207) drives upper drive wheel (208) to rotate through vertical drive belt (209), upper drive wheel (208) drives docking wheel (116) to rotate through horizontal drive belt (210), docking wheel (116) is rotatably installed with wheel frame (217).

5. The deep foundation pit engineering surveying equipment according to claim 4, characterized in that: A lower rotating rod (212) is rotatably mounted on the gear shaft (211), an upper rotating rod (213) is rotatably mounted on the lower rotating rod (212), an outer wheel (120) is rotatably mounted on the upper rotating rod (213), a rotating rod wheel (214) is rotatably mounted on the lower rotating rod (212), and the rotating rod wheel (214) is rotatably mounted on the upper rotating rod (213). The gear shaft (211) drives the rotating rod wheel (214) to rotate through the lower belt (215), and the rotating rod wheel (214) drives the outer wheel (120) to rotate through the upper belt (216).

6. The deep foundation pit engineering surveying equipment according to claim 1, characterized in that: The installation mechanism includes a rotating frame (301) rotatably mounted below the main frame (101), two clamping frames (302) are slidably mounted on the rotating frame (301), a slope (303) is provided below the clamping frames (302), and a tension spring (304) and a compression spring (305) are provided between the clamping frames (302) and the rotating frame (301).

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