Subway foundation pit deformation monitoring device

Abstract

The utility model relates to the technical field of subway foundation pit deformation monitoring, in particular to a subway foundation pit deformation monitoring device which comprises a support, a monitor body is installed at the top end of the support, a telescopic cylinder is installed at the bottom end of the support, a movable positioning assembly is installed on the telescopic cylinder, a balance weight seat is installed on the movable positioning assembly, and the balance weight seat is installed on the support. A ground gripping positioning mechanism is installed on the balance weight seat and comprises a ground drilling assembly and a ground gripping assembly, the ground drilling assembly is used for drilling a hole capable of being inserted in the ground surface, the ground gripping assembly is used for being matched with the ground drilling assembly to be inserted in a soil layer, the ground drilling assembly comprises multiple sets of butt joint holes formed in the balance weight seat, and the butt joint holes are communicated with the ground drilling assembly. An insertion cylinder is mounted on the inner side of the butt joint hole; the support is simple in structure, convenient to operate and capable of drilling harder soil layers, the road holding force and stability of the whole support are enhanced, the support is not prone to inclining or toppling when collided or squeezed, and the monitor body is prevented from being damaged due to falling.

Description

TECHNICAL FIELD

[0001] The utility model relates to subway foundation pit deformation monitoring technical field, concretely relates to a subway foundation pit deformation monitoring device. BACKGROUND

[0002] Subway foundation pits are usually located in the city underground, so they are often constructed under a deep groundwater level, so the geology of the subway foundation pit is mostly hard, in the process of construction, the subway will construct the foundation pit, so the subway foundation pit deformation monitoring device is needed to detect the foundation pit, which is used for discovering and timely warning the deformation problem of the foundation pit in advance, ensuring the safety and smooth progress of the subway construction, in the prior art, the part of the positioning rod bottom is inserted into the soil layer to strengthen the stability, but the geology of the subway foundation pit is mostly hard, when the positioning rod is pressed into the bottom of the foundation pit one by one, the friction between the positioning rod and the bottom of the foundation pit is large, which may make it difficult for the positioning rod to enter the deep bottom, thereby affecting the stability of the subway foundation pit deformation monitoring device on the foundation pit.

[0003] In order to solve the above technical problems, the prior art disclosed in Chinese patent No. CN221276693U discloses a subway foundation pit deformation monitoring device, which comprises: a tripod, a rotating shaft is rotatably connected to the top end of the tripod, and a deformation monitor is fixedly connected to the top of the rotating shaft.

[0004] The prior art scheme above realizes that the friction rod can better resist the uneven bottom of the subway foundation pit, but it only uses the tripod for support, so once it is collided on the uneven soil layer, the tripod is easy to fall, the stability is insufficient, and the deformation monitor on the tripod is easy to be damaged due to collision, which increases the cost and affects the work efficiency. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a subway foundation pit deformation monitoring device to solve the problem that the deformation monitor on the tripod is easy to be damaged due to collision, which increases the cost and affects the work efficiency.

[0006] To achieve the above object, the utility model provides the following technical scheme:

[0007] The utility model provides a subway foundation pit deformation monitoring device, including support, the top of support is installed with monitoring appearance main part, the bottom of support is installed with telescopic cylinder, installs movable positioning assembly on telescopic cylinder, installs counterweight seat on movable positioning assembly, installs ground gripping positioning mechanism on counterweight seat, ground gripping positioning mechanism includes ground drilling subassembly and ground gripping subassembly, ground drilling subassembly is used for drilling the hole of being inserted in ground surface, ground gripping subassembly is used for cooperation ground drilling subassembly and inserts in the soil layer.

[0008] As the preferred scheme of the utility model, the ground drilling subassembly includes multiple groups of docking holes arranged in the counterweight seat, the docking holes are internally provided with an insertion cylinder, the outer wall of the insertion cylinder is provided with external threads, the inner wall of the docking holes is provided with internal threads corresponding to the external threads, a rotating sleeve is arranged on the outer side of the insertion cylinder close to the top end, and a spiral drill bit is arranged at the bottom end of the insertion cylinder.

[0009] As the preferred scheme of the utility model, the top end of the insertion cylinder is rotatably connected with a threaded rod, the outer side of the threaded rod is threadedly connected with a movable seat, multiple groups of inclined surfaces are arranged on both sides of the movable seat, a first moving groove is arranged on the outer wall of the movable seat at the inclined surface, a second moving groove is arranged on one side of the first moving groove in the movable seat, a second moving block is slidably connected in the second moving groove, a first moving block is fixedly connected to one side of the second moving block, the first moving block is slidably connected with the first moving groove, an extension rod is arranged at the other end of the first moving block, and extension holes slidably connected with the extension rod are arranged at both ends of the insertion cylinder.

[0010] As the preferred scheme of the utility model, limit blocks are arranged on both sides of the top end of the movable seat, a limit sleeve is arranged on the outer side of the movable seat in the insertion cylinder, and limit grooves slidably connected with the limit blocks are arranged at both ends of the inner side of the limit sleeve.

[0011] As the preferred scheme of the utility model, the width of the second moving groove is greater than the width of the first moving groove, a knob is rotatably connected to the top end of the insertion cylinder, and one end of the knob extends into the insertion cylinder and is fixedly connected with one end of the threaded rod.

[0012] As the preferred scheme of the utility model, the movable positioning assembly includes a telescopic rod slidably connected to the inner side of the telescopic cylinder, one end of the telescopic rod is fixedly connected with one side of the counterweight seat, and multiple groups of positioning holes extending into the telescopic rod are arranged on the outer wall of the telescopic cylinder.

[0013] As the preferred scheme of the utility model, a positioning column is slidably connected to the inner side of the positioning hole, a fixed plate is slidably connected to the outer wall of one end of the positioning hole extending to the outside of the positioning hole, a pull plate is arranged at the other end of the positioning column, a positioning spring is arranged between the fixed plate and the pull plate, and a pull ring is rotatably connected to the outer side of the pull plate.

[0014] Compared with the prior art, the utility model has the advantages that:

[0015] In the utility model, the hole that can be inserted is bored on the ground through the earth drilling assembly, the earth gripping assembly is inserted into the soil layer in cooperation with the earth drilling assembly, the structure is simple, convenient operation, the hard soil layer can be bored, the earth gripping force and stability of the whole support are strengthened, the inclination and falling are not prone to occur when the collision or extrusion is encountered, and the main body of the monitoring instrument is prevented from being damaged due to falling. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the whole structure schematic diagram of the utility model;

[0017] Figure 2 It is the local three-dimensional structure schematic diagram of the earth drilling assembly of the utility model;

[0018] Figure 3 It is the local sectional structure schematic diagram of the utility model's insertion tube;

[0019] Figure 4 It is the local structure schematic diagram of the inclined surface of the movable seat of the utility model;

[0020] Figure 5 It is the local three-dimensional structure schematic diagram of the movable positioning assembly of the utility model.

[0021] In the drawing: 1, support;2, monitoring instrument main body;3, counterweight seat;4, insertion tube;5, threaded rod;6, movable seat;7, first moving groove;8, second moving block;9, first moving block;10, extension rod;11, limit block;12, limit sleeve;13, knob;14, rotating sleeve;15, spiral drill bit;16, telescopic rod;17, positioning column;18, fixed plate;19, positioning spring;20, pull ring. DETAILED DESCRIPTION

[0022] The technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the embodiments of the utility model, obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments, based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0023] Embodiment:

[0024] Please refer to Figures 1-5 The utility model provides a technical scheme:

[0025] A subway foundation pit deformation monitoring device, comprising a support 1, a monitoring instrument main body 2 is installed at the top end of the support 1, a telescopic cylinder is installed at the bottom end of the support 1, a movable positioning assembly is installed on the telescopic cylinder, a counterweight seat 3 is installed on the movable positioning assembly, a ground grabbing positioning mechanism is installed on the counterweight seat 3, the ground grabbing positioning mechanism comprises a ground drilling assembly and a ground grabbing assembly, the ground drilling assembly is used for drilling a pluggable hole on the ground surface, and the ground grabbing assembly is used for being plugged into the soil layer in cooperation with the ground drilling assembly. When the device is used, the ground drilling assembly can drill a pluggable hole on the ground surface, and the ground grabbing assembly is plugged into the soil layer in cooperation with the ground drilling assembly. The device has the advantages of simple structure, convenient operation, drilling of hard soil layer, and improved ground grabbing force and stability of the support 1. When collision or extrusion occurs, the device is not prone to tilting and falling, and the monitoring instrument main body 2 is not damaged due to falling.

[0026] In the embodiment, as shown in Figure 1 and Figure 2 , the ground drilling assembly comprises a plurality of docking holes formed in the counterweight seat 3, a plugging cylinder 4 is installed in the inside of the docking hole, an external thread is formed on the outer wall of the plugging cylinder 4, an internal thread corresponding to the external thread is formed on the inner wall of the docking hole, a rotating sleeve 14 is sleeved on the outside of the plugging cylinder 4 close to the top end, and a spiral drill bit 15 is installed at the bottom end of the plugging cylinder 4. First, the plugging cylinder 4 and the docking hole are combined by cooperating with the external thread and the internal thread, the counterweight seat 3 is moved close to the soil layer by using the movable positioning assembly, then the rotating sleeve 14 is held to rotate the plugging cylinder 4, the spiral drill bit 15 rotates and moves downward, and the plugging cylinder 4 enters the inside of the soil layer.

[0027] In the embodiment, as shown in Figure 2 , Figure 3 and Figure 4 , the two sides of the top end of the movable seat 6 are both installed with a limiting block 11, a limiting sleeve 12 is sleeved on the inside of the plugging cylinder 4 outside the movable seat 6, limiting grooves are formed at both ends of the inside of the limiting sleeve and are in sliding connection with the limiting blocks 11, then the knob 13 at one end of the threaded rod 5 is twisted, the movable seat 6 on the outside of the threaded rod 5 moves downward in cooperation with the limiting grooves and the limiting blocks 11, and the first moving block 9 and the second moving block 8 also move in the first moving groove 7 and the second moving groove.

[0028] In the embodiment, as shown in Figure 2 , Figure 3 and Figure 4As shown, the inside top end of the insertion barrel 4 is rotationally connected with a threaded rod 5, the outside of the threaded rod 5 is threadedly connected with a movable seat 6, a plurality of inclined surfaces are formed on both sides of the movable seat 6, a first moving groove 7 is formed on the outer wall of the movable seat 6 at the inclined surface, a second moving groove is formed on one side of the inside of the movable seat 6 at the first moving groove 7, a second moving block 8 is slidably connected in the second moving groove, a first moving block 9 is fixedly connected on one side of the second moving block 8, the first moving block 9 is slidably connected with the first moving groove 7, an extension rod 10 is installed on the other end of the first moving block 9, extension holes are formed on both ends of the insertion barrel 4 and slidably connected with the extension rod 10, the width of the second moving groove is greater than the width of the first moving groove 7, a knob 13 is rotationally connected on the top end of the insertion barrel 4, one end of the knob 13 extends into the inside of the insertion barrel 4 and is fixedly connected with one end of the threaded rod 5, further, because the width of the second moving groove is greater than the width of the first moving groove 7, the first moving block 9 and the second moving block 8 will not be separated from the movable seat 6 when moving in the first moving groove 7 and the second moving groove, at this time, a plurality of extension rods 10 on both sides also extend outward and insert into the soil when the first moving block 9 and the second moving block 8 move, for insertion positioning.

[0029] In this embodiment, as shown in Figure 1 and Figure 5 , the movable positioning assembly includes a telescopic rod 16 slidably connected inside the telescopic barrel, one end of the telescopic rod 16 is fixedly connected with one side of the counterweight seat 3, a plurality of positioning holes extending into the inside of the telescopic rod 16 are arranged on the outer wall of the telescopic barrel, a positioning column 17 is slidably connected inside the positioning hole, a fixed plate 18 is slidably connected on the outer wall of one end of the positioning column 17 extending outside the positioning hole, a pull plate is installed on the other end of the positioning column 17, a positioning spring 19 is installed between the fixed plate 18 and the pull plate, a pull ring 20 is rotationally connected on the outside of the pull plate, further, holding the pull ring 20 can drive the positioning column 17 on the pull plate to slide inside the fixed plate 18 and separate from the inside of the positioning hole, at this time, the telescopic rod 16 can be pulled out from the inside of the telescopic barrel, after adjusting to the appropriate position, the pull ring 20 can be released, the positioning spring 19 drives the pull plate and the positioning column 17 to reset to the corresponding positioning hole for positioning, so as to lock the position of the telescopic rod 16 after adjustment.

[0030] The implementation principle of the subway foundation pit deformation monitoring device is as follows: the plug-in barrel 4 and the butt joint hole are combined through the matching external thread and internal thread, the counterweight seat 3 is close to the soil layer by using the movable positioning assembly, then the rotating sleeve 14 is held to drive the plug-in barrel 4 to rotate, the spiral drill bit 15 rotates and moves downward, and the plug-in barrel 4 can enter the inside of the soil layer after the soil layer is drilled, the knob 13 at one end of the threaded rod 5 is twisted to drive the movable seat 6 outside the threaded rod 5 to move downward in cooperation with the limiting groove and the limiting block 11, the first moving block 9 and the second moving block 8 also move in the first moving groove 7 and the second moving groove, the width of the second moving groove is greater than that of the first moving groove 7, so that the first moving block 9 and the second moving block 8 do not separate from the movable seat 6 when moving in the first moving groove 7 and the second moving groove, at this time, the plurality of extension rods 10 on both sides also extend outward and are inserted into the soil when the first moving block 9 and the second moving block 8 move, and the extension rods 10 are positioned, the pull ring 20 is buckled to drive the positioning column 17 on the pull plate to slide in the fixed plate 18 and separate from the inside of the positioning hole, at this time, the telescopic rod 16 can be pulled out from the inside of the telescopic barrel, and after being adjusted to the appropriate position, the pull ring 20 is released, the positioning spring 19 drives the pull plate and the positioning column 17 to reset to the corresponding positioning hole for positioning, so that the position of the telescopic rod 16 after adjustment is locked.

[0031] The control mode of the utility model is controlled through the controller, the control circuit of the controller can be realized through simple programming of the person skilled in the art, the power supply also belongs to the public knowledge in the field, and the utility model is used to protect the mechanical device, so the utility model will not explain the control mode and the circuit connection in detail.

[0032] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A subway foundation pit deformation monitoring device, comprising a support (1), characterized in that: The top end of the support (1) is provided with a monitoring instrument body (2), the bottom end of the support (1) is provided with a telescopic cylinder, the telescopic cylinder is provided with a movable positioning assembly, the movable positioning assembly is provided with a counterweight seat (3), the counterweight seat (3) is provided with a ground grabbing positioning mechanism, the ground grabbing positioning mechanism comprises a ground drilling assembly and a ground grabbing assembly, the ground drilling assembly is used for drilling a pluggable hole in the ground, and the ground grabbing assembly is used for being plugged into the soil layer in cooperation with the ground drilling assembly.

2. The subway foundation pit deformation monitoring device according to claim 1, characterized in that: The ground drilling assembly comprises a plurality of docking holes formed in the inside of the counterweight seat (3), the inside of the docking hole is provided with a plugging cylinder (4), the outer wall of the plugging cylinder (4) is provided with external threads, the inner wall of the docking hole is provided with internal threads corresponding to the external threads, and the outside of the plugging cylinder (4) is provided with a rotating sleeve (14) sleeved near the top end.

3. The subway foundation pit deformation monitoring device according to claim 2, characterized in that: The inside of the plugging cylinder (4) is rotatably connected with a threaded rod (5) at the top end, the outside of the threaded rod (5) is threadedly connected with a movable seat (6), the movable seat (6) is provided with a plurality of inclined surfaces on both sides, the outer wall of the movable seat (6) is provided with a first moving groove (7) at the inclined surface, the inside of the movable seat (6) is provided with a second moving groove on one side of the first moving groove (7), the second moving groove is slidably connected with a second moving block (8) inside, one side of the second moving block (8) is fixedly connected with a first moving block (9), the first moving block (9) is slidably connected with the first moving groove (7), the other end of the first moving block (9) is provided with an extension rod (10), and both ends of the plugging cylinder (4) are provided with extension holes slidably connected with the extension rod (10).

4. The subway foundation pit deformation monitoring device according to claim 3, characterized in that: Both sides of the top end of the movable seat (6) are provided with limit blocks (11), the inside of the plugging cylinder (4) is provided with a limit sleeve (12) sleeved on the outside of the movable seat (6), and both ends of the inside of the limit sleeve are provided with limit grooves slidably connected with the limit blocks (11).

5. The subway foundation pit deformation monitoring device according to claim 4, characterized in that: The width of the second moving groove is greater than that of the first moving groove (7), the top end of the plugging cylinder (4) is rotatably connected with a knob (13), and one end of the knob (13) extends into the inside of the plugging cylinder (4) and is fixedly connected with one end of the threaded rod (5).

6. The subway foundation pit deformation monitoring device according to claim 5, characterized in that: The movable positioning assembly comprises a telescopic rod (16) slidably connected to the inside of the telescopic cylinder, one end of the telescopic rod (16) is fixedly connected with one side of the counterweight seat (3), and the outer wall of the telescopic cylinder is arranged with a plurality of positioning holes extending into the inside of the telescopic rod (16).

7. The subway foundation pit deformation monitoring device according to claim 6, characterized in that: The inside of the positioning hole is slidably connected with a positioning column (17), the outer wall of one end of the positioning column (17) extending to the outside of the positioning hole is slidably connected with a fixed plate (18), the other end of the positioning column (17) is provided with a pull plate, the fixed plate (18) and the pull plate are provided with a positioning spring (19) therebetween, and the outside of the pull plate is rotatably connected with a pull ring (20).

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