A foundation pit layout device for measuring parameters of a foundation pit for foundation pit design

Through the vertical calibration of the laser ranging sensor and the gravity ball and the electric guide rail support reflection mechanism, the problem of inaccurate foundation pit depth measurement is solved, and high-precision measurement of foundation pit parameters and convenient operation are achieved.

CN116815831BActive Publication Date: 2025-10-10SCEGC NO 5 CONSTRUCTION ENGINEERING GROUP COMPANYLTD
View PDF 2 Cites 0 Cited by

Patent Information

Application Number
CN202310343307.0
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-04-03
Publication Date
2025-10-10
Estimated Expiration
2043-04-03

AI Technical Summary

Technical Problem

In the existing technology, when measuring foundation pit parameters, the weight block measurement is inaccurate and the tilt of the laser equipment affects the measurement accuracy, resulting in inaccurate foundation pit depth data.

Method used

A laser distance measuring sensor is combined with a gravity ball for vertical calibration. The electric guide rail and supporting reflector mechanism are used to ensure that the laser distance measuring sensor is vertical. The balance rod and pulling force storage component are used to keep the equipment balanced. A reflector is used to reflect the laser to improve measurement accuracy.

Benefits of technology

The accuracy of foundation pit depth measurement and the convenience of operation are achieved, ensuring that the laser ranging sensor is perpendicular to the ground, avoiding the influence of tilt, and improving the accuracy of measurement results.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN116815831B_ABST
    Figure CN116815831B_ABST
Patent Text Reader

Abstract

The present application relates to a kind of wire laying equipment, especially a kind of pit parameter measuring pit wire laying equipment for foundation pit design.The present application provides a kind of pit parameter measuring pit wire laying equipment for foundation pit design, including mobile frame, top plate, side vertical plate, electric guide rail and fixed plate, top plate is connected on the top of mobile frame, both sides of the top plate top are connected with side vertical plate, electric guide rail is installed on one side of the top of two side vertical plates, and fixed plate is connected between the moving body of two electric guide rails.The present application measures the depth of foundation pit by sending laser to laser ranging sensor, and the measurement result is more accurate, and when laser ranging sensor is lowered, the force of gravity ball can be applied to gimbal to make laser ranging sensor on gravity ball and ground always in vertical state, to avoid laser ranging sensor inclination and affect the accuracy of measurement result.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The invention relates to a laying-out device, in particular to a foundation pit laying-out device for measuring foundation pit parameters used in foundation pit design. Background Art

[0002] The foundation pit is a temporary project. Its function is to provide a space so that the foundation masonry work can be carried out according to the position specified in the design. When constructing the foundation pit, its parameters need to be laid out and measured. Usually, it is necessary to measure the height of the pit bottom uplift and the elevation of the foundation pit.

[0003] In the existing method of measurement, a line-laying device is usually used to lower a weight block. After the weight block falls to the bottom of the foundation pit, the depth of the line is measured. However, since the foundation pit is usually deep, the operator may not pay attention to continuing to lay out the line after the weight block touches the ground, resulting in inaccurate measured depth data. Laser testing is also used for measurement. However, due to the poor flatness of the bottom of the foundation pit, the laser testing equipment is prone to tilt when it is lowered, thereby affecting the accuracy of the measured depth data. Summary of the Invention

[0004] In view of this, the present invention provides a foundation pit setting-out device for measuring foundation pit parameters for foundation pit design.

[0005] The technical solution is: a foundation pit layout equipment for measuring foundation pit parameters used in foundation pit design, including a mobile frame, a top plate, a side plate, an electric guide rail, a fixed plate, a line-laying mechanism, a laser emitting mechanism and a support and reflection mechanism. The top of the mobile frame is connected to the top of the top plate, and the two sides of the top of the top plate are connected to the side plates. The top of the two side plates are installed on one side, and the moving bodies of the two electric guide rails are connected with a fixed plate. The top plate is provided with a line-laying mechanism, and the line-laying mechanism is provided with a laser emitting mechanism. The line-laying mechanism is used to lower the laser emitting mechanism to the bottom of the foundation pit, and the laser emitting mechanism is used to emit laser. The mobile frame is provided with a support and reflection mechanism, and the support and reflection mechanism is used to support the entire mobile bracket and reflect the laser emitted by the laser emitting mechanism.

[0006] Furthermore, the pay-off mechanism includes a sliding seat, a dual-axis motor, a winding drum, a connecting rope, a lowering frame, a guide wheel and a connecting bracket. The top of the top plate is slidably connected to the sliding seat, and a dual-axis motor is installed on the upper part of the sliding seat. The two output shafts of the dual-axis motor are connected to the winding drum, and the two winding drums are wound with connecting ropes. Guide wheels are rotatably connected to both sides of the fixed plate, and the two connecting ropes are respectively wrapped around the two guide wheels. A lowering frame is connected between the ends of the two connecting ropes, and a connecting bracket is connected between the fixed plate and the sliding seat.

[0007] Furthermore, the laser emitting mechanism includes a universal ball, a laser ranging sensor and a gravity ball. The middle part of the lower frame is rotatably connected to the universal ball, the laser ranging sensor is installed at the top center of the universal ball, and the bottom center of the universal ball is connected to the gravity ball.

[0008] Furthermore, the supporting reflection mechanism includes a supporting frame, a cylinder and a reflective plate. The bottom of the mobile frame is slidably connected to the supporting frame. Cylinders are installed on both sides of the mobile frame. The telescopic rods of the two cylinders are connected to the supporting frame. The reflective plate is slidably connected to the supporting frame.

[0009] Furthermore, it also includes a supporting assembly, which includes a guide seat, a balancing support rod, a straightening bracket and a first elastic member. The guide seats are connected to both sides of the top of the fixed plate. The balancing support rod is slidably connected to the guide seat. The first elastic member is connected between the balancing support rod and the guide seat. The bottoms of the two balancing support rods are respectively in contact with the two sides of the top of the lower rack. The top of the lower rack is connected to the straightening bracket, the lower part of the balancing support rod is in contact with the straightening bracket, and the contact position of the straightening bracket and the lower rack is inclined.

[0010] Furthermore, it also includes a pulling force storage component, which includes a second elastic member, a limiting bracket, a guide frame, a sliding bracket, a pull rope and a reversing wheel. The limiting bracket is slidably connected to both sides of the support frame. The limiting bracket is used to limit the reflector. A second elastic member is connected between the reflector and the support frame. The tops of the two side vertical plates are connected to the guide frames. The sliding bracket is slidably connected between the guide frames on both sides. The sliding bracket is connected to the upper part of the balance rod, and the sliding bracket is slidably connected to the guide seat. Pull ropes are connected to both sides of the bottom of the sliding bracket. The pull ropes pass through the top plate and can slide on the top plate. Two reversing wheels are installed on the bottom of the top plate. The pull ropes pass around the reversing wheels and are connected to the reflector.

[0011] Furthermore, it also includes a top opening component, which includes an extrusion block and a third elastic member. The extrusion blocks are connected to both sides of the top of the lower rack. The extrusion blocks can move downward to squeeze the limit bracket to move, and the third elastic member is connected between the limit bracket and the support frame.

[0012] Furthermore, a buffer sleeve is included, and two buffer sleeves are connected to the side of the support frame away from the reflector.

[0013] The beneficial effects are as follows: 1. During measurement, the present invention measures the depth of the foundation pit by sending a laser through the laser ranging sensor, and the obtained measurement result is more accurate. At the same time, when the laser ranging sensor is lowered, a force vertical to the center of the earth can be applied to the universal ball through the gravity ball, so that the laser ranging sensor on the gravity ball is always in a vertical state with the ground, avoiding the tilt of the laser ranging sensor and affecting the accuracy of the measurement result.

[0014] 2. In the process of lowering the lower frame, the present invention can respectively support the two sides of the lower frame top through two balancing rods, so that the lower frame is in a balanced state. Even if the lower frame tilts, the balancing rods can squeeze and straighten the inclined surface on the bracket to restore the lower frame to a balanced state.

[0015] 3. The present invention can drive the reflector to move above the laser ranging sensor while the lower frame moves downward to below the reflector by pulling the power storage component and the top opening component, which makes operation more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0017] Figure 2 It is a structural schematic diagram of the top plate, side panels, electric guide rails and other components of the present invention.

[0018] Figure 3 It is a structural schematic diagram of the wire-paying mechanism of the present invention.

[0019] Figure 4 This is a schematic diagram of the first structure of the wire-releasing mechanism and the laser emitting mechanism of the present invention.

[0020] Figure 5 This is a second structural schematic diagram of the wire-releasing mechanism and the laser emitting mechanism of the present invention.

[0021] Figure 6 It is a structural schematic diagram of the laser emitting mechanism of the present invention.

[0022] Figure 7 This is a schematic diagram of the first structure of the support and reflection mechanism of the present invention.

[0023] Figure 8 This is a schematic diagram of the second structure of the support and reflection mechanism of the present invention.

[0024] Figure 9 This is a schematic diagram of the first structure of the supporting assembly of the present invention.

[0025] Figure 10 This is a schematic diagram of the second structure of the supporting assembly of the present invention.

[0026] Figure 11 This is a third structural schematic diagram of the supporting assembly of the present invention.

[0027] Figure 12 This is a schematic diagram of the first structure of the pulling force storage component and the push-opening component of the present invention.

[0028] Figure 13 This is a second structural schematic diagram of the pulling force storage component and the push-opening component of the present invention.

[0029] Figure 14 This is a schematic diagram of the first structure of the pulling force storage assembly of the present invention.

[0030] Figure 15 This is a second structural schematic diagram of the pulling force storage assembly of the present invention.

[0031] Figure 16 It is a schematic structural diagram of the support frame, reflector and buffer sleeve of the present invention.

[0032] Figure numbers: 1_mobile frame, 2_top plate, 3_side plate, 4_electric guide rail, 5_fixed plate, 61_sliding seat, 62_dual-axis motor, 63_winding reel, 64_connecting rope, 65_lowering frame, 66_guide wheel, 67_connecting bracket, 71_universal ball, 72_laser ranging sensor, 73_gravity ball, 81_support frame, 82_cylinder, 83_reflector, 91_guide seat, 92_balancing rod, 93_straightening bracket, 94_first elastic member, 101_second elastic member, 102_limiting bracket, 105_guide frame, 106_sliding bracket, 107_pull rope, 108_reversing wheel, 11_extrusion block, 112_third elastic member, 12_buffer sleeve. DETAILED DESCRIPTION

[0033] The present invention will be described in detail below with reference to the accompanying drawings.

[0034] Example 1

[0035] A foundation pit layout device for measuring foundation pit parameters used in foundation pit design, such as Figures 1-8 As shown, it includes a mobile frame 1, a top plate 2, a side plate 3, an electric guide rail 4, a fixed plate 5, a pay-off mechanism, a laser emitting mechanism and a support and reflection mechanism. The top of the mobile frame 1 is connected to the top plate 2, and the front and rear sides of the top of the top plate 2 are connected to the side plates 3. The right sides of the tops of the two side plates 3 are installed with electric guide rails 4. The fixed plate 5 is connected between the moving bodies of the two electric guide rails 4. A pay-off mechanism is provided on the top plate 2, and a laser emitting mechanism is provided on the pay-off mechanism. The pay-off mechanism is used to lower the laser emitting mechanism to the bottom of the foundation pit, and the laser emitting mechanism is used to emit laser. A support and reflection mechanism is provided on the mobile frame 1, and the support and reflection mechanism is used to support the entire mobile bracket and reflect the laser emitted by the laser emitting mechanism.

[0036] like Figure 3-Figure 5As shown, the pay-off mechanism includes a sliding seat 61, a dual-axis motor 62, a winding drum 63, a connecting rope 64, a lower rack 65, a guide wheel 66 and a connecting bracket 67. The sliding seat 61 is slidably connected to the left side of the top of the top plate 2, and a dual-axis motor 62 is installed on the upper part of the sliding seat 61. The two output shafts of the dual-axis motor 62 are connected to the winding drum 63, and the two winding drums 63 are wound with connecting ropes 64. The front and rear sides of the fixed plate 5 are rotatably connected to the guide wheels 66. The two connecting ropes 64 are respectively passed around the two guide wheels 66. The lower rack 65 is connected between the ends of the two connecting ropes 64. A connecting bracket 67 is connected between the fixed plate 5 and the sliding seat 61, so that the fixed plate 5 and the sliding seat 61 move synchronously.

[0037] like Figure 5 and Figure 6 As shown, the laser emitting mechanism includes a universal ball 71, a laser ranging sensor 72 and a gravity ball 73. The universal ball 71 is rotatably connected to the middle of the lower frame 65. The universal ball 71 can rotate 360 ​​degrees along the lower frame 65. The laser ranging sensor 72 is installed at the top center of the universal ball 71, and the gravity ball 73 is connected to the bottom center of the universal ball 71. The gravity ball 73 can apply gravity to the universal ball 71, and the gravity applied by the gravity ball 73 is vertically downward, so that the universal ball 71 and the laser ranging sensor 72 thereon are always in a vertical state.

[0038] like Figure 7 and Figure 8 As shown, the supporting reflection mechanism includes a support frame 81, a cylinder 82 and a reflector 83. The bottom of the mobile frame 1 is slidably connected to the support frame 81. The support frame 81 can be moved down to support the ground to support the entire equipment. Cylinders 82 are installed on the front and rear sides of the mobile frame 1. The telescopic rods of the two cylinders 82 are connected to the support frame 81, so that the extension and retraction of the telescopic rods of the cylinders 82 can control the lifting and lowering of the support frame 81. The reflector 83 is slidably connected to the support frame 81. The laser emitted by the laser ranging sensor 72 can be irradiated on the reflector 83, so that the reflector 83 reflects the laser back to the laser ranging sensor 72.

[0039] When it is necessary to measure the foundation pit, the device can be used. First, the device is moved to the ground on the side of the foundation pit by moving the frame 1, so that the electric guide rail 4 is above the foundation pit, and can be inclined according to the inclination of the foundation pit wall, so that the position of the right side of the electric guide rail 4 is above the bottom plane of the foundation pit. Then control the electric guide rail 4 to drive the fixed plate 5 to move to the right, and the fixed plate 5 moves together with the sliding seat 61 through the connecting support 67 when moving, until the lower frame 65 moves to the top of the bottom plane of the foundation pit. At the same time, the cylinder 82 can be started to drive the support frame 81 to move downward, so that the support frame 81 is in contact with the ground to support the device. Then control the double-shaft motor 62 to drive the winding disc 63 to rotate to loosen the connecting rope 64. At this time, the lower frame 65 moves downward, and when the lower frame 65 moves downward to the bottom of the foundation pit, the double-shaft motor 62 is controlled to be closed, and the reflector 83 is pulled to slide to the right along the support frame 81, so that the reflector 83 moves to the top of the laser ranging sensor 72. At this time, the laser ranging sensor 72 can be started to emit laser, and the emitted laser is reflected to the laser ranging sensor 72 again through the reflector 83. At this time, the laser ranging sensor 72 can test the distance between it and the ground. Then the distance is added to the height between the bottom of the lower frame 65 and the laser emitting end of the laser ranging sensor 72, so that the distance between the bottom of the foundation pit and the ground can be obtained, that is, the depth of the foundation pit is measured. In this way, the depth of the foundation pit can be measured, and the measurement is carried out by laser ranging. At the same time, the gravity ball 73 can exert gravity on the universal ball 71 under the action of gravity to make the laser ranging sensor 72 on the universal ball 71 always perpendicular to the ground, so that the measurement result is more accurate.

[0040] Embodiment 2

[0041] On the basis of embodiment 1, as shown in Figures 9-11 The device further comprises a stop component, which comprises a guide seat 91, a balance stop rod 92, a righting support 93 and a first elastic member 94. The guide seat 91 is connected to the top of the fixed plate 5 on the front and back sides. The balance stop rod 92 is slidably connected to the guide seat 91, and the first elastic member 94 is connected between the balance stop rod 92 and the guide seat 91. The bottom of the two balance stop rods 92 is in contact with the top of the lower frame 65 on the front and back sides. The righting support 93 is connected to the top of the lower frame 65, and the balance stop rod 92 is in contact with the righting support 93. The contact position of the righting support 93 and the lower frame 65 is inclined, so that when the position of the lower frame 65 deviates, the balance stop rod 92 can press the righting support 93 through the inclined part of the righting support 93 to right the lower frame 65.

[0042] In the initial state, the lower frame 65 is pulled by the connecting rope 64, the lower frame 65 is against the balance rod 92, and the first elastic member 94 is in a compressed state. When the lower frame 65 moves downward, the first elastic member 94 can squeeze the balance rod 92 to move downward, so that the two balance rods 92 respectively press against the front and rear sides of the top of the lower frame 65, so that the front and rear sides of the lower frame 65 are evenly stressed, so that the lower frame 65 is in a balanced state. If the position of the lower frame 65 deviates, the tilt on the straightening bracket 93 will align At the bottom of the balancing rod 92, the balancing rod 92 continues to apply pressure, and can squeeze the straightening bracket 93 through the inclined part on the straightening bracket 93, thereby driving the lower rack 65 to move together until the straightening bracket 93 and the lower rack 65 return to their original positions, so that the lower rack 65 maintains a balanced state. When the lower rack 65 moves downward to below the reflector 83, the balancing rod 92 also drops to the limit, and the first elastic member 94 also returns to its original state. The balancing rod 92 that has dropped to the limit is located above the reflector 83.

[0043] like Figure 12-15 As shown, it also includes a pulling force storage component, which includes a second elastic member 101, a limiting bracket 102, a guide frame 105, a sliding bracket 106, a pull rope 107 and a reversing wheel 108. The front and rear sides of the support frame 81 are slidably connected to the limiting bracket 102, and the limiting bracket 102 is used to limit the reflector 83. A second elastic member 101 is connected between the reflector 83 and the support frame 81. The tops of the two side vertical plates 3 are connected to the guide frames 105. The sliding bracket 106 is slidably connected between the guide frames 105 on both sides. The sliding bracket 106 is connected to the upper part of the balance support rod 92, and the sliding bracket 106 can slide on the guide seat 91. The front and rear sides of the left side of the bottom of the sliding bracket 106 are connected to the pull rope 107. The pull rope 107 passes through the top plate 2 and can slide on the top plate 2. Two reversing wheels 108 are installed on the left side of the bottom of the top plate 2. The pull rope 107 bypasses the reversing wheel 108 and is connected to the reflector 83.

[0044] At the beginning, the sliding support 106 is above the guide support 105, the sliding support 106 pulls the pull rope 107, the pull rope 107 pulls the reflecting plate 83, the second elastic member 101 is in the stretched state, and the limiting support 102 also limits the reflecting plate 83, when the lower placing frame 65 moves downward, the balance abutting rod 92 moves downward, the balance abutting rod 92 drives the sliding support 106 to move downward when moving downward, the sliding support 106 drives the pull rope 107 to move downward, the pull rope 107 no longer pulls the reflecting plate 83 after moving downward, at this time, the reflecting plate 83 cannot move due to the limiting of the limiting support 102, when the lower placing frame 65 moves downward to below the reflecting plate 83, the two limiting supports 102 can be pulled away from each other to no longer block the reflecting plate 83, the reflecting plate 83 moves rightwards under the action of the second elastic member 101, so that the reflecting plate 83 can be driven to move rightwards, and the operation is more convenient.

[0045] As shown in Figure 12 and Figure 13 , the top opening assembly further comprises an extrusion block 11 and a third elastic member 112, the lower placing frame 65 is connected with the extrusion block 11 on the front and rear sides of the top, the limiting support 102 is provided with a protrusion, the protrusion penetrates through the limiting support 102, the extrusion block 11 on the lower placing frame 65 is above the protrusion of the limiting support 102 after the lower placing frame 65 moves rightwards, at this time, the lower placing frame 65 can move downward to extrude the limiting support 102 to move through the extrusion block 11, and the third elastic member 112 is connected between the limiting support 102 and the supporting frame 81.

[0046] After the lower placing frame 65 moves rightwards, the extrusion block 11 on the lower placing frame 65 is above the protrusion of the limiting support 102, the lower placing frame 65 can drive the extrusion block 11 to move downward when moving downward, the extrusion block 11 can extrude the two limiting supports 102 away from each other through the protrusion on the limiting support 102 after the extrusion block 11 moves downward to contact the protrusion of the limiting support 102, the third elastic member 112 is stretched, at this time, the lower placing frame 65 is also below the reflecting plate 83, when the extrusion block 11 is separated from the protrusion on the limiting support 102, the limiting support 102 is reset under the action of the third elastic member 112, so that the limiting support 102 can be automatically controlled to open, and the operation is more convenient.

[0047] As shown in Figure 16 , the buffer sleeve 12 is further included, two buffer sleeves 12 are connected on the right side in the supporting frame 81, the reflecting plate 83 can hit on the buffer sleeve 12 when moving under the action of the second elastic member 101, and the buffer sleeve 12 is used for buffering.

[0048] Those skilled in the art should understand that the above embodiments do not limit the present invention in any form, and any technical solutions obtained by equivalent replacement or equivalent transformation fall within the protection scope of the present invention.

Claims

1. A foundation pit setting-out device for measuring foundation pit parameters for foundation pit design, characterized in that: The invention comprises a mobile frame (1), a top plate (2), a side plate (3), an electric guide rail (4), a fixed plate (5), a wire-releasing mechanism, a laser emitting mechanism and a supporting reflection mechanism. The top of the mobile frame (1) is connected to the top plate (2), both sides of the top of the top plate (2) are connected to the side plates (3), the tops of the two side plates (3) are both installed with electric guide rails (4), the moving bodies of the two electric guide rails (4) are connected with the fixed plate (5), the top plate (2) is provided with a wire-releasing mechanism, the wire-releasing mechanism is provided with a laser emitting mechanism, the wire-releasing mechanism is used to lower the laser emitting mechanism to the bottom of the foundation pit, the laser emitting mechanism is used to emit laser light, and the mobile frame (1) is provided with a supporting reflection mechanism, the supporting reflection mechanism is used to support the entire mobile support and reflect the laser emitted by the laser emitting mechanism; The pay-off mechanism comprises a sliding seat (61), a double-axis motor (62), a winding drum (63), a connecting rope (64), a lower frame (65), a guide wheel (66) and a connecting bracket (67); the top of the top plate (2) is slidably connected to the sliding seat (61); the double-axis motor (62) is installed on the upper part of the sliding seat (61); the two output shafts of the double-axis motor (62) are connected to the winding drum (63); the two winding drums (63) are wound with connecting ropes (64); both sides of the fixed plate (5) are rotatably connected to the guide wheels (66); the two connecting ropes (64) are respectively passed around the two guide wheels (66); the lower frame (65) is connected between the ends of the two connecting ropes (64); and the connecting bracket (67) is connected between the fixed plate (5) and the sliding seat (61); The laser emitting mechanism includes a universal ball (71), a laser ranging sensor (72) and a gravity ball (73); the middle of the lower frame (65) is rotatably connected to the universal ball (71); the laser ranging sensor (72) is installed at the top center of the universal ball (71); and the gravity ball (73) is connected to the bottom center of the universal ball (71); The supporting reflection mechanism includes a supporting frame (81), a cylinder (82) and a reflective plate (83); the bottom of the mobile frame (1) is slidably connected to the supporting frame (81); cylinders (82) are installed on both sides of the mobile frame (1); telescopic rods of the two cylinders (82) are connected to the supporting frame (81); and the reflective plate (83) is slidably connected to the upper surface of the supporting frame (81); The invention also includes a supporting assembly, which includes a guide seat (91), a balancing support rod (92), a straightening bracket (93) and a first elastic member (94). Both sides of the top of the fixed plate (5) are connected to the guide seat (91). The guide seat (91) is slidably connected to the balancing support rod (92). The first elastic member (94) is connected between the balancing support rod (92) and the guide seat (91). The bottoms of the two balancing support rods (92) are respectively in contact with both sides of the top of the lower rack (65). The top of the lower rack (65) is connected to the straightening bracket (93). The lower part of the balancing support rod (92) is in contact with the straightening bracket (93). The contact position of the straightening bracket (93) and the lower rack (65) is inclined.

2. The equipment for setting out foundation pit lines for measuring foundation pit parameters for foundation pit design according to claim 1, characterized in that: The invention also includes a pulling force storage component, which includes a second elastic member (101), a limiting bracket (102), a guide frame (105), a sliding bracket (106), a pull rope (107) and a reversing wheel (108). Both sides of the support frame (81) are slidably connected to the limiting bracket (102). The limiting bracket (102) is used to limit the reflector (83). The second elastic member (101) is connected between the reflector (83) and the support frame (81). The tops of the two side panels (3) are both connected to the guide frame (106). 5), a sliding bracket (106) is slidably connected between the guide frames (105) on both sides, the sliding bracket (106) is connected to the upper part of the balance rod (92), the sliding bracket (106) is slidably connected to the guide seat (91), and both sides of the bottom of the sliding bracket (106) are connected with a pull rope (107), the pull rope (107) passes through the top plate (2) and can slide on the top plate (2), and two reversing wheels (108) are installed on the bottom of the top plate (2), and the pull rope (107) passes around the reversing wheel (108) and is connected to the reflector (83).

3. The equipment for setting out foundation pit lines for measuring foundation pit parameters for foundation pit design according to claim 2, characterized in that: The top opening assembly also includes an extrusion block (11) and a third elastic member (112). The extrusion blocks (11) are connected to both sides of the top of the lower frame (65). The extrusion blocks (11) can move downward to squeeze the limit bracket (102). The third elastic member (112) is connected between the limit bracket (102) and the support frame (81).

4. The equipment for setting out foundation pit lines for measuring foundation pit parameters for foundation pit design according to claim 3, characterized in that: It also includes a buffer sleeve (12), and two buffer sleeves (12) are connected to a side of the support frame (81) away from the reflector (83).

Citation Information

Patent Citations

  • Device for detecting hole depth of formed hole of rotary drill

    CN209263910U

  • Deep foundation pit monitor

    CN213061957U