Foundation pit displacement mechanical detection device

Abstract

The invention relates to the technical field of foundation pit displacement detection, and discloses a foundation pit displacement mechanical detection device.According to the scheme, the foundation pit displacement mechanical detection device comprises a base, and a winding roller is rotationally connected to the top side of the base. In the falling process of a sensor main rod, the inclination measuring sensor is used for measuring the inclination angle and the horizontal direction of each section in an inclination measuring hole in the periphery of a foundation pit, then the horizontal displacement deformation amount of each section is calculated according to the triangular relation between the inclination angle and the horizontal displacement amount, and finally the deformation amount of each section is combined, so that the deformation amount of the foundation pit is calculated. The maximum deformation amount and the overall change trend of the hole position are calculated, the change situation of the interior of the soil body around the foundation pit can be visually and accurately reflected through measurement data of the inclination measurement sensor, and the collected data have the advantages of being good in real-time performance, high in accuracy, small in influence of environmental factors on collection and the like.

Description

Technical Field

[0001] The present application relates to the technical field of foundation pit displacement detection, and in particular to a foundation pit displacement mechanical detection device. Background Art

[0002] In recent years, with the acceleration of urbanization in my country, the scale of urban infrastructure and commercial real estate development has expanded rapidly; at the same time, with the continuous advancement of industrialization and modernization, more and more people have gathered in large cities, resulting in an increasing demand for urban living, working and entertainment space, and urban congestion has become more and more serious; then in large and megacities with a serious shortage of land supply, expanding underground and aerial space has become an inevitable and perhaps the only choice.

[0003] In this context, the surrounding environment during foundation pit construction is becoming more and more complex, and underground projects themselves are developing towards ultra-deep and large areas. As a result, safety issues in the foundation pit construction process are becoming increasingly prominent; it is necessary not only to ensure the stability and safety of the foundation pit itself, but also to consider the impact of its own deformation on the safety of surrounding buildings. From the analysis of a large number of foundation pit engineering accidents, it can be concluded that any foundation pit engineering accident is directly related to poor, inaccurate, and untimely monitoring. Therefore, it is of great practical significance to conduct a comprehensive real-time inspection of the entire foundation pit and measure its safety with reasonable parameter indicators.

[0004] In practical applications, during excavation and tunneling of most existing deep foundation pits and underground projects, the retaining structures and stress fields will change, and the soil inside and outside the foundation pit will deform due to the change in stress, which may lead to safety hazards.

[0005] Therefore, those skilled in the art provide a mechanical detection device for foundation pit displacement to solve the problems raised in the above background technology. Summary of the invention

[0006] In order to solve the problem raised in the above background technology that during the excavation and tunneling of deep foundation pits and underground projects, the retaining structure and stress field will change, and the soil inside and outside the foundation pit will deform due to the change in stress, which will lead to the emergence of safety hazards, the present application provides a mechanical detection device for foundation pit displacement.

[0007] A foundation pit displacement mechanical detection device provided in the present application adopts the following technical scheme: it includes a base, a winding roller is rotatably connected to the top side of the base, the top end of the winding roller is rotatably connected to a mounting plate, the bottom side of the mounting plate is fixedly connected to an L-shaped connecting piece, one side of the L-shaped connecting piece is fixedly connected to a servo motor, the output shaft of the servo motor is fixedly sleeved with a first gear, the outer side of the first gear is meshingly connected to a second gear, the center of the second gear is fixedly connected to a worm, the outer side of the winding roller is fixedly sleeved with a first worm gear, the worm gear is meshingly connected to the first worm gear, a steel wire rope is wound around the outer side of the winding roller, the connecting end of the steel wire rope is fixedly tied to a sensor main rod, a lateral inclination sensor and a master-slave wireless communication device are fixedly installed inside the sensor main rod, and the lateral inclination sensor and the master-slave wireless communication device transmit data signals to a Web communication module of an external device through radio.

[0008] Preferably, two vertical tubes are fixedly connected to the top side of the base, and the two vertical tubes penetrate the mounting plate and are fixedly connected to the mounting plate.

[0009] Preferably, the top side of the base and the bottom side of the mounting plate are rotatably connected with the same screw rod, the outer side of the screw rod is spirally connected with a guide plate, the outer side of the guide plate is installed with a guide wheel, the guide wheel is in contact with the wire rope, the outer side of the screw rod is fixed with a second worm gear, and the second worm gear is meshingly connected with the worm.

[0010] Preferably, the guide plate is slidably sleeved with the two vertical pipes.

[0011] Preferably, two limit blocks are fixedly connected to the bottom side of the mounting plate, and both limit blocks are rotatably sleeved with the worm.

[0012] Preferably, a connecting plate is fixedly connected to the top side of the mounting plate, and a handle is rotatably connected to the top side of the connecting plate.

[0013] Preferably, a reduction wheel is installed on the top side of the mounting plate, and the steel wire rope is in contact with the surface of the reduction wheel.

[0014] Preferably, a length meter is slidably sleeved on the outer side of the spiral rod.

[0015] Preferably, two movable holes are provided on the outer side of the sensor main rod, and the centers of the inner walls of the two movable holes are rotatably connected with pulley frames.

[0016] In summary, this application includes the following beneficial technical effects:

[0017] 1. By setting the sensor main rod, when the sensor main rod touches the bottom, the side inclination sensor will feedback data to control the servo motor to stop working. In the process of the sensor main rod falling, the inclination sensor is used to measure the inclination angle and horizontal orientation of each segment in the inclinometer hole outside the foundation pit. Then, the triangular relationship between the inclination angle and the horizontal displacement is used to calculate the horizontal displacement deformation of each segment. Finally, by combining the deformation of each segment, the maximum deformation of the hole and the overall change trend are calculated. The measurement data of the inclinometer sensor can intuitively and accurately reflect the internal changes of the soil around the foundation pit. The collected data has the advantages of good real-time performance, high accuracy and less influence of environmental factors. It can effectively and timely remind people to take corresponding preventive measures in advance to avoid the occurrence of safety hazards and minimize economic losses.

[0018] 2. By setting up vertical pipes, the two vertical pipes cooperate with each other, so that the base and the mounting plate are always in a relatively static state, thereby achieving the effect of limiting and fixing the mounting plate.

[0019] 3. By setting the guide plate and the guide wheel, when the wire rope is being retracted and released, the worm drives the second worm wheel to rotate, the second worm wheel drives the spiral rod to rotate, and the spiral rod drives the guide plate to move up or down at a uniform speed. When moving, the guide wheel can guide the wire rope to avoid the occurrence of knots caused by irregular retraction and release of the wire rope.

[0020] 4. By setting the guide plate to be slidably sleeved with the two vertical tubes, the two vertical tubes can limit the guide plate, thereby preventing the guide plate and the spiral rod from rotating. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the left side top view of a foundation pit displacement mechanical detection device in an embodiment of the present application;

[0022] Figure 2 It is a schematic diagram of a top view of a foundation pit displacement mechanical detection device in an embodiment of the present application;

[0023] Figure 3 It is a schematic diagram of the top view of the right side of a foundation pit displacement mechanical detection device in an embodiment of the present application;

[0024] Figure 4 It is a right view structural schematic diagram of a foundation pit displacement mechanical detection device in an embodiment of the present application;

[0025] Figure 5 It is a front structural schematic diagram of a foundation pit displacement mechanical detection device in an embodiment of the present application;

[0026] Figure 6It is a left-side structural schematic diagram of a foundation pit displacement mechanical detection device in an embodiment of the present application;

[0027] Figure 7 It is a schematic diagram of the left side bottom view of a foundation pit displacement mechanical detection device in an embodiment of the present application;

[0028] Figure 8 2 is a schematic diagram of the structure of a mechanical detection device for foundation pit displacement in an embodiment of the present application;

[0029] Fig. 9 It is a schematic diagram of the structure of a foundation pit displacement mechanical detection device in an embodiment of the present application viewed from the right side;

[0030] Fig.10 It is a schematic diagram of the connection structure between a sensor main rod and a pulley frame of a foundation pit displacement mechanical detection device in an embodiment of the present application.

[0031] Explanation of the reference numerals in the accompanying drawings: 1. base; 2. winding roller; 3. mounting plate; 4. L-shaped connector; 5. servo motor; 6. first gear; 7. second gear; 8. worm; 9. first worm wheel; 10. sensor main rod; 11. vertical pipe; 12. screw rod; 13. guide plate; 14. guide wheel; 15. second worm wheel; 16. handle; 17. reduction wheel; 18. length meter; 19. pulley frame; 20. limit block; 21. connecting plate. DETAILED DESCRIPTION

[0032] The following will be combined with the attached Figure 1-10 The technical solution of the present invention is described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] The present application embodiment discloses a foundation pit displacement mechanical detection device, referring to Figure 1-10, including a base 1, a winding roller 2 is rotatably connected to the top of the winding roller 2, a mounting plate 3 is rotatably connected to the bottom of the mounting plate 3, an L-shaped connector 4 is fixedly connected to one side of the L-shaped connector 4, a servo motor 5 is fixedly connected to one side of the L-shaped connector 4, an output shaft of the servo motor 5 is fixedly sleeved with a first gear 6, a second gear 7 is meshingly connected to the outer side of the first gear 6, a worm 8 is fixedly connected to the center of the second gear 7, a first worm wheel 9 is fixedly sleeved on the outer side of the winding roller 2, the worm 8 is meshingly connected to the first worm wheel 9, a steel wire rope is wound around the outer side of the winding roller 2, a sensor main rod 10 is fixedly tied to the connecting end of the steel wire rope, a lateral inclination sensor and a master-slave wireless communication device are fixedly installed inside the sensor main rod 10, and the lateral inclination sensor and the master-slave wireless communication device transmit data signals to the external Web communication module through radio; by setting the sensor main rod 10, moving the base 1 to the designated area, manually putting the sensor main rod 10 into the tunnel to be detected, the output shaft of the servo motor 5 drives the first gear 6 to rotate, the first gear 6 drives the second gear 7 to rotate, and the second gear 7 The worm 8 is driven to rotate, and the worm 8 drives the first worm wheel 9 to rotate, and the first worm wheel 9 drives the winding roller 2 to rotate. When the winding roller 2 rotates, the wire rope can be continuously released. At this time, the sensor main rod 10 will move downward as the wire rope is gradually released. When the sensor main rod 10 touches the bottom, the side tilt sensor will feedback data to control the servo motor 5 to stop working. During the falling process of the sensor main rod 10, the inclination sensor is used to measure the inclination angle and horizontal orientation of each segment in the inclination hole outside the foundation pit, and then the triangular relationship between the inclination angle and the horizontal displacement is used to calculate the horizontal displacement deformation of each segment. Finally, by combining the deformation of each segment, the maximum deformation of the hole position and the overall change trend are calculated. The measurement data of the inclinometer sensor can intuitively and accurately reflect the internal changes of the soil around the foundation pit. The collected data has the advantages of good real-time performance, high accuracy, and less influence of environmental factors on the collection. It can effectively and timely remind people to take corresponding preventive measures in advance to avoid the occurrence of safety hazards, and at the same time, it can minimize economic losses.

[0034] In the present application, two vertical tubes 11 are fixedly connected to the top side of the base 1, and the two vertical tubes 11 penetrate the mounting plate 3 and are fixedly connected to the mounting plate 3; by setting the vertical tubes 11 and cooperating with each other, the base 1 and the mounting plate 3 can always be in a relatively static state, thereby achieving the effect of limiting and fixing the mounting plate 3.

[0035] In the present application, the top side of the base 1 and the bottom side of the mounting plate 3 are rotatably connected with the same screw rod 12, the outer side of the screw rod 12 is spirally connected with a guide plate 13, the outer side of the guide plate 13 is installed with a guide wheel 14, the guide wheel 14 is in contact with the wire rope, and the outer fixed sleeve of the screw rod 12 is provided with a second worm gear 15, and the second worm gear 15 is meshingly connected with the worm 8; by setting the guide plate 13 and the guide wheel 14, when the wire rope is being retracted and released, the worm 8 drives the second worm gear 15 to rotate, the second worm gear 15 drives the screw rod 12 to rotate, and the screw rod 12 drives the guide plate 13 to move up or down at a uniform speed. When moving, the guide wheel 14 can guide the wire rope to avoid the occurrence of knots caused by irregular retraction and release of the wire rope.

[0036] In the present application, the guide plate 13 is slidably sleeved with the two vertical tubes 11 ; by setting the guide plate 13 to be slidably sleeved with the two vertical tubes 11 , the two vertical tubes 11 can limit the guide plate 13 , thereby preventing the guide plate 13 and the spiral rod 12 from rotating.

[0037] In the present application, two limit blocks 20 are fixedly connected to the bottom side of the mounting plate 3, and both limit blocks 20 are rotatably sleeved with the worm 8; by setting the limit blocks 20, the two limit blocks 20 cooperate with each other to limit the position of the worm 8, thereby ensuring the stability of the worm 8 during rotation and avoiding deviation.

[0038] In the present application, a connecting plate 21 is fixedly connected to the top side of the mounting plate 3, and a handle 16 is rotatably connected to the top side of the connecting plate 21; by providing the handle 16, when the entire device is moved, the handle 16 can be used to improve the convenience of moving the entire device.

[0039] In the present application, a reduction wheel 17 is installed on the top side of the mounting plate 3, and the wire rope is in contact with the surface of the reduction wheel 17; by setting the reduction wheel 17, when the sensor main rod 10 falls too fast due to a fault, the reduction wheel 17 can be used to brake the wire rope, thereby improving the safety during detection.

[0040] In the present application, a length meter 18 is slidably sleeved on the outer side of the spiral rod 12; by setting the length meter 18, when the sensor main rod 10 falls to the bottom of the pit, the servo motor 5 stops working. At this time, by observing the length meter 18, the length of the wire rope pay-out can be known, thereby determining the depth of the foundation pit.

[0041] In the present application, two movable holes are opened on the outer side of the sensor main rod 10, and the centers of the inner walls of the two movable holes are rotatably connected with pulley frames 19; by setting the pulley frames 19, when the sensor main rod 10 slides downward, the two pulley frames 19 can reduce the friction between the sensor main rod 10 and the inner wall of the foundation pit, thereby improving the smoothness of the sensor main rod 10 when falling.

[0042] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the instructions and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0043] The implementation principle of a foundation pit displacement mechanical detection device in an embodiment of the present application is as follows: when in use, the base 1 is moved to the designated area, and the sensor main rod 10 is manually put into the pit to be detected, and the output shaft of the servo motor 5 drives the first gear 6 to rotate, the first gear 6 drives the second gear 7 to rotate, the second gear 7 drives the worm 8 to rotate, the worm 8 drives the first worm wheel 9 to rotate, and the first worm wheel 9 drives the winding roller 2 to rotate. When the winding roller 2 rotates, the wire rope can be continuously released. At this time, the sensor main rod 10 will move downward as the wire rope is gradually released. When the sensor main rod 10 touches the bottom, the side tilt sensor will feedback data to control the servo motor 5 to stop working. During the falling process of the sensor main rod 10, the measuring The incline sensor measures the inclination angle and horizontal orientation of each segment in the incline hole outside the foundation pit, and then uses the triangular relationship between the inclination angle and the horizontal displacement to calculate the horizontal displacement deformation of each segment. Finally, by combining the deformation of each segment, the maximum deformation of the hole and the overall change trend are calculated. The measurement data of the inclinometer sensor can intuitively and accurately reflect the internal changes of the soil around the foundation pit. The collected data has the advantages of good real-time performance, high accuracy and less influence of environmental factors. Therefore, it can effectively and timely remind people to take corresponding preventive measures in advance to avoid the occurrence of safety hazards and at the same time minimize economic losses. The two vertical pipes 11 cooperate with each other to make the bottom The seat 1 and the mounting plate 3 are always in a relatively static state, thereby achieving the effect of limiting and fixing the mounting plate 3. When the wire rope is being retracted or released, the worm 8 drives the second worm gear 15 to rotate, the second worm gear 15 drives the spiral rod 12 to rotate, and the spiral rod 12 drives the guide plate 13 to move up or down at a uniform speed. During movement, the guide wheel 14 can guide the wire rope to avoid the occurrence of knots caused by irregular retraction and release of the wire rope. The guide plate 13 is slidably connected with the two vertical tubes 11. At this time, the two vertical tubes 11 can limit the guide plate 13, thereby avoiding the guide plate 13 and the spiral rod 12 from rotating. The two limit blocks 20 cooperate with each other to limit the position of the worm 8, thereby ensuring that the worm The stability of the rod 8 during rotation can avoid deviation. When the entire device is moved, the handle 16 can be used to improve the convenience of the entire device during movement. When the sensor main rod 10 falls too fast due to a malfunction, the reduction wheel 17 can be used to brake the wire rope, thereby improving the safety during detection. When the sensor main rod 10 falls to the bottom of the pit, the servo motor 5 stops working. At this time, by observing the length meter 18, the length of the wire rope can be known, and the depth of the foundation pit can be obtained. When the sensor main rod 10 slides downward, the two pulley frames 19 can be used to reduce the friction between the sensor main rod 10 and the inner wall of the foundation pit, thereby improving the smoothness of the sensor main rod 10 when it falls.

[0044] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0045] Secondly: In the drawings of the embodiments disclosed in the present invention, only the structures involved in the embodiments disclosed in the present invention are involved, and other structures can refer to the usual design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other.

Claims

1. A mechanical detection device for foundation pit displacement, comprising a base (1), characterized in that: The top side of the base (1) is rotatably connected to a winding roller (2), the top end of the winding roller (2) is rotatably connected to a mounting plate (3), the bottom side of the mounting plate (3) is fixedly connected to an L-shaped connecting piece (4), one side of the L-shaped connecting piece (4) is fixedly connected to a servo motor (5), the output shaft of the servo motor (5) is fixedly sleeved with a first gear (6), the outer side of the first gear (6) is meshingly connected to a second gear (7), the center of the second gear (7) is fixedly connected to a worm (8), the outer side of the winding roller (2) is fixedly sleeved with a first worm wheel (9), the worm wheel (8) is meshingly connected to the first worm wheel (9), the outer side of the winding roller (2) is wound with a steel wire rope, the connecting end of the steel wire rope is fixedly bound to a sensor main rod (10), the interior of the sensor main rod (10) is fixedly installed with a lateral tilt sensor and a master-slave wireless communication device, the lateral tilt sensor and the master-slave wireless communication device transmit data signals to an external Web communication module through radio.

2. A foundation pit displacement mechanical detection device according to claim 1, characterized in that: Two vertical pipes (11) are fixedly connected to the top side of the base (1), and the two vertical pipes (11) penetrate the mounting plate (3) and are fixedly connected to the mounting plate (3).

3. A foundation pit displacement mechanical detection device according to claim 1, characterized in that: The top side of the base (1) and the bottom side of the mounting plate (3) are rotatably connected to a same screw rod (12); the outer side of the screw rod (12) is spirally connected to a guide plate (13); a guide wheel (14) is installed on the outer side of the guide plate (13); the guide wheel (14) is in contact with the wire rope; the outer fixed sleeve of the screw rod (12) is provided with a second worm gear (15); the second worm gear (15) is meshingly connected to the worm (8).

4. A foundation pit displacement mechanical detection device according to claim 3, characterized in that: The guide plate (13) is slidably sleeved with the two vertical pipes (11).

5. A foundation pit displacement mechanical detection device according to claim 1, characterized in that: Two limit blocks (20) are fixedly connected to the bottom side of the mounting plate (3), and the two limit blocks (20) are both rotatably sleeved with the worm (8).

6. A foundation pit displacement mechanical detection device according to claim 1, characterized in that: A connecting plate (21) is fixedly connected to the top side of the mounting plate (3), and a handle (16) is rotatably connected to the top side of the connecting plate (21).

7. A foundation pit displacement mechanical detection device according to claim 1, characterized in that: A reduction wheel (17) is installed on the top side of the mounting plate (3), and the steel wire rope is in contact with the surface of the reduction wheel (17).

8. A foundation pit displacement mechanical detection device according to claim 3, characterized in that: The outer side of the spiral rod (12) is slidably sleeved with a length meter (18).

9. The foundation pit displacement mechanical detection device according to claim 1, characterized in that: Two movable holes are provided on the outer side of the sensor main rod (10), and the centers of the inner walls of the two movable holes are rotatably connected with pulley frames (19).

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