Foundation pit water level monitoring device suitable for water-rich red sandstone stratum

Abstract

The utility model discloses a foundation pit water level monitoring device suitable for a water-rich red sandstone stratum, which comprises a host machine, a connecting pipeline arranged on the host machine and a monitoring probe arranged at one end, far away from the host machine, of the connecting pipeline, a mounting mechanism is arranged on the inner side of the protective shell, a cover plate is arranged at an opening in the top end of the protective shell, and a limiting mechanism matched with the mounting mechanism is arranged on the inner wall of the protective shell; when the protective shell is installed, the rotating ring is rotated, the connecting rod slides in the arc-shaped groove and the adjusting plate extends out, so that the clamping plate can abut against the inner wall of the host installation hole, the protective shell is limited and fixed, the installation mode is stable and reliable, the protective shell can be effectively prevented from inclining or loosening in the using process, and the safety of the host is improved. And the stability and the accuracy of the monitoring equipment are ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to a foundation pit water level monitoring technical field especially applicable to a water -rich red sandstone stratum foundation pit water level monitoring device. BACKGROUND

[0002] Water -rich red sandstone stratum foundation pit is a kind of complex geological condition commonly seen in subway, tunnel and other underground engineering, and its characteristics and construction countermeasures are crucial to ensure engineering safety and quality, and for the characteristics of water -rich red sandstone stratum, support structure with enough strength and rigidity needs to be selected. For example, drill hole interlocking pile+anchor cable+concrete support combined support system can be used to ensure the stability of foundation pit.

[0003] When water level monitoring is carried out for water -rich red sandstone stratum foundation pit, water level monitoring equipment is usually installed in the water level pipe of foundation pit, and the host of monitoring equipment needs to be placed at the top of water level pipe, and in the prior art, protective shell is usually directly sleeved on the outside of host to protect host, and the size of protective shell can not be adapted to the size of the installation hole of host, and protective shell can be inclined or loose when being used. This inclination or looseness not only reduces the protection effect of protective shell on host, but also can cause host to be damaged due to inadequate protection, thereby affecting the stability and accuracy of the whole water level monitoring system.

[0004] Therefore, a water -rich red sandstone stratum foundation pit water level monitoring device needs to be designed to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the shortcomings in the prior art and provides a water -rich red sandstone stratum foundation pit water level monitoring device.

[0006] In order to achieve the above object, the utility model adopts the following technical scheme:

[0007] A water -rich red sandstone stratum foundation pit water level monitoring device, including host, connecting pipeline arranged on the host and monitoring probe arranged at the end, away from the host, of the connecting pipeline, the outer wall of the host is fixedly installed with protective shell, the inner side of the protective shell is provided with mounting mechanism, the top opening of the protective shell is provided with cover plate, the inner wall of the protective shell is provided with the limiting mechanism matched with the mounting mechanism;

[0008] The mounting mechanism includes swivel ring rotatably installed on the inner wall of the protective shell, four arc grooves arranged in annular array on the top surface of the swivel ring and four guide openings arranged in annular array on the protective shell;

[0009] The limiting mechanism comprises a supporting plate fixedly installed on the bottom surface of the rotating ring, a plurality of one-way teeth fixedly installed on the outer wall of the supporting plate, and a torsion spring arranged between the bottom surface of the rotating ring and the inner bottom wall of the protective shell.

[0010] Preferably, the inner wall of each of the four guide openings is slidably installed with an adjusting plate, one end of each of the four adjusting plates on the inner side of the protective shell is fixedly installed with a connecting rod, the connecting rod passes through the arc-shaped slot, and one end of each of the four adjusting plates on the outer side of the protective shell is fixedly installed with a clamping plate.

[0011] Preferably, the outer wall of the clamping plate is provided with anti-skid lines, and the outer wall of the connecting rod is fitted with the inner wall of the arc-shaped slot.

[0012] Preferably, the outer wall of the clamping plate is provided with anti-skid lines, and the outer wall of the connecting rod is fitted with the inner wall of the arc-shaped slot.

[0013] Preferably, one end of the connecting rod on the outer side of the protective shell is fixedly installed with a pull knob.

[0014] Preferably, the bottom surface of the protective shell is fixedly installed with a sealing rubber ring, and the bottom surface side of the protective shell is fixedly installed with a plurality of insertion rods arranged in a ring array.

[0015] The utility model has the following beneficial effects:

[0016] By setting the protective shell and the mounting mechanism, when the protective shell is installed, the clamping plate can be pressed against the inner wall of the host installation hole by rotating the rotating ring, sliding the connecting rod in the arc-shaped slot and extending the adjusting plate, so that the protective shell is limited and fixed. This installation method is stable and reliable, can effectively prevent the protective shell from being skewed or loosened during use, and ensures the stability and accuracy of the monitoring equipment.

[0017] By setting the limiting mechanism, the rotating direction of the rotating ring is the free direction of the one-way teeth and the pawl, so the rotating ring can be directly driven. When the limiting is to be released, the pawl and the one-way teeth are separated by pulling the connecting rod, and the rotating ring is reversed and reset under the action of the torsion spring, so that the limiting of the protective shell is released. This operation method is not only simple and easy to understand, but also can quickly complete the limiting and releasing operation, and improves the work efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 A three-dimensional structural schematic view suitable for the water level monitoring device for the water-rich red sandstone stratum foundation pit is provided for the utility model;

[0019] Figure 2A kind of protective shell local sectioning one structural schematic diagram suitable for water-rich red sandstone stratum foundation pit water level monitoring device is proposed in the utility model;

[0020] Figure 3 A kind of protective shell local sectioning two structural schematic diagram suitable for water-rich red sandstone stratum foundation pit water level monitoring device is proposed in the utility model;

[0021] Figure 4 A kind of three-dimensional multi-angle structural schematic diagram suitable for water-rich red sandstone stratum foundation pit water level monitoring device is proposed in the utility model;

[0022] In the drawing: 1, main machine;2, connecting pipeline;3, monitoring probe;4, protective shell;5, mounting mechanism;51, swivel;52, arc slot;53, guide port;54, adjusting plate;55, connecting rod;56, clamping plate;6, cover plate;7, limiting mechanism;71, support plate;72, one-way tooth;73, pull rod;74, pawl;75, spring;76, torsional spring;8, sealing rubber ring;9, insertion rod. DETAILED DESCRIPTION

[0023] REFERENCE Figures 1-4 A kind of water-rich red sandstone stratum foundation pit water level monitoring device suitable for, including main machine 1, connecting pipeline 2 being arranged on main machine 1 and monitoring probe 3 being arranged at the end of connecting pipeline 2 away from main machine 1, the outer wall of main machine 1 is fixedly installed with protective shell 4, the inner side of protective shell 4 is provided with mounting mechanism 5, the top opening of protective shell 4 is provided with cover plate 6, the inner wall of protective shell 4 is provided with limiting mechanism 7 adapted with mounting mechanism 5;By the setting of protective shell 4, main machine 1 is provided with effective protection, prevent it from being damaged in the harsh environment of water-rich red sandstone stratum foundation pit, ensure the stable operation of monitoring device;

[0024] Mounting mechanism 5 includes swivel 51 rotatably installed on the inner wall of protective shell 4, four arc slots 52 distributed in ring array are opened on the top surface of swivel 51 and four guide ports 53 distributed in ring array are opened on protective shell 4;By the setting of mounting mechanism 5, the convenient installation between protective shell 4 and main machine 1 installation hole is realized, and the stability and firmness of installation are guaranteed;

[0025] Limiting mechanism 7 includes support plate 71 fixedly installed on the bottom surface of swivel 51, a plurality of one-way tooth 72 fixedly installed on the outer wall of support plate 71 and torsional spring 76 arranged between the bottom surface of swivel 51 and the inner bottom wall of protective shell 4;By the setting of limiting mechanism 7, the rotation of swivel 51 is effectively limited, the accidental loosening or falling of protective shell 4 in the use process is prevented, and the safety of monitoring device is improved.

[0026] REFERENCE Figure 2The inner wall of the four guide ports 53 is slidably provided with an adjusting plate 54, one end of the four adjusting plates 54 is fixedly provided with a connecting rod 55 on the inner side of the protective shell 4, the connecting rod 55 penetrates through the arc-shaped slot 52, and the other end of the four adjusting plates 54 is fixedly provided with a clamping plate 56.

[0027] With reference to Figure 2 , Figure 4 The outer wall of the clamping plate 56 is provided with anti-skid lines, and the outer wall of the connecting rod 55 is attached to the inner wall of the arc-shaped slot 52; the anti-skid lines increase the friction between the clamping plate 56 and the inner wall of the installation hole of the main machine 1, preventing accidental sliding of the protective shell 4; and the close attachment of the connecting rod 55 to the arc-shaped slot 52 ensures the stability and smoothness of the adjusting plate 54 during sliding.

[0028] With reference to Figure 3 The outer wall of the protective shell 4 is provided with a pull rod 73 penetrating through, and the pull rod 73 is slidably connected to the penetrating position; one end of the pull rod 73 is fixedly provided with a ratchet pawl 74 engaged with the one-way tooth 72 on the inner side of the protective shell 4, and the pull rod 73 is sleeved with a spring 75; through the cooperation of the pull rod 73, the ratchet pawl 74 and the spring 75, flexible control of the rotation of the rotating ring 51 is realized, which is convenient for limiting or releasing the protective shell 4 when needed.

[0029] With reference to Figure 3 One end of the pull rod 73 is fixedly provided with a pull knob on the outer side of the protective shell 4; the pull knob facilitates the operation of the operator, making the pulling of the pull rod 73 more relaxed and convenient.

[0030] With reference to Figure 4 The bottom surface of the protective shell 4 is fixedly provided with a sealing rubber ring 8, and a plurality of insertion rods 9 arranged in a ring array are fixedly arranged at the position of the side edge of the bottom surface of the protective shell 4; the sealing rubber ring 8 enhances the sealing between the protective shell 4 and the water level pipe, preventing water from penetrating; and the insertion rods 9 achieve the preliminary fixation between the protective shell 4 and the water level pipe, providing convenience for subsequent limiting operation.

[0031] The specific working principle of the utility model is as follows:

[0032] In use, the monitoring probe 3 can be first inserted into the water level pipe of the foundation pit and lowered through the connecting pipeline 2, and after the monitoring probe 3 is lowered to the use position, the main machine 1 can be installed; when the main machine 1 is installed, the sealing rubber ring 8 at the bottom of the protective shell 4 can be inserted into the water level pipe to ensure the sealing between the protective shell 4 and the water level pipe; when inserted, the insertion rods 9 at the bottom of the protective shell 4 can be inserted into the installation hole of the water level pipe to preliminarily fix the protective shell 4.

[0033] Subsequently, the cover plate 6 on the protective shell 4 can be opened and the rotating ring 51 is rotated. When the rotating ring 51 rotates, the connecting rod 55 is slidingly installed in the arc-shaped slot 52, and the arc-shaped slot 52 can rotate with the rotating ring 51. At the same time, the adjusting plate 54 is driven through the connecting rod 55, so that the adjusting plate 54 extends out of the protective shell 4 and drives the clamping plate 56 to abut against the inner wall of the main machine 1 installation hole, so that the clamping plate 56 limits and fixes the protective shell 4, ensuring that the protective shell 4 is more stable in use, and avoiding tilting;

[0034] The rotating direction of the rotating ring 51 during installation is the free direction of the one-way tooth 72 and the pawl 74, so the rotating ring 51 can be directly driven. After the rotating ring 51 rotates, the rotating ring 51 has a certain rotation force under the action of the torsion spring 76. The rotation direction is the locking direction of the one-way tooth 72 and the pawl 74, so the rotating ring 51 can be limited. When the protective shell 4 needs to be released from the limit, the pull rod 73 can be pulled to separate the pawl 74 from the one-way tooth 72. Under the action of the torsion spring 76, the rotating ring 51 can be reversed and reset, that is, the protective shell 4 can be released from the limit to facilitate storage.

Claims

1. A water level monitoring device for foundation pits in water-rich red sandstone strata, comprising a main unit (1), a connecting pipeline (2) installed on the main unit (1), and a monitoring probe (3) installed at the end of the connecting pipeline (2) away from the main unit (1), characterized in that, The outer wall of the host (1) is fixedly installed with a protective shell (4), and an installation mechanism (5) is provided on the inner side of the protective shell (4). A cover plate (6) is provided at the top opening of the protective shell (4), and a limiting mechanism (7) adapted to the installation mechanism (5) is provided on the inner wall of the protective shell (4). The mounting mechanism (5) includes a rotating ring (51) rotatably mounted on the inner wall of the protective shell (4), four arc-shaped grooves (52) arranged in a ring array on the top surface of the rotating ring (51), and four guide ports (53) arranged in a ring array on the protective shell (4). The limiting mechanism (7) includes a support plate (71) fixedly installed on the bottom surface of the rotating ring (51), a plurality of one-way teeth (72) fixedly installed on the outer wall of the support plate (71), and a torsion spring (76) disposed between the bottom surface of the rotating ring (51) and the inner bottom wall of the protective shell (4).

2. The device for monitoring the water level in foundation pits in water-rich red sandstone strata according to claim 1, characterized in that, Adjustment plates (54) are slidably installed on the inner walls of the four guide ports (53). A connecting rod (55) is fixedly installed on one end of the four adjustment plates (54) located inside the protective shell (4), and the connecting rod (55) passes through the arc groove (52). A clamping plate (56) is fixedly installed on one end of the four adjustment plates (54) located outside the protective shell (4).

3. The device for monitoring the water level in foundation pits in water-rich red sandstone strata according to claim 2, characterized in that, The outer wall of the card plate (56) is provided with anti-slip texture, and the outer wall of the connecting rod (55) is in contact with the inner wall of the arc groove (52).

4. The device for monitoring the water level in foundation pits in water-rich red sandstone strata according to claim 1, characterized in that, A pull rod (73) is provided through the outer wall of the protective shell (4), and the pull rod (73) is slidably connected to the through part. A pawl (74) that meshes with the one-way tooth (72) is fixedly installed on one end of the pull rod (73) located inside the protective shell (4). A spring (75) is fitted on the pull rod (73).

5. A water level monitoring device for foundation pits in water-rich red sandstone strata according to claim 4, characterized in that, A pull button is fixedly installed at one end of the pull rod (73) located outside the protective shell (4).

6. A water level monitoring device for foundation pits in water-rich red sandstone strata according to claim 1, characterized in that, A sealing ring (8) is fixedly installed on the bottom surface of the protective shell (4), and several insert rods (9) arranged in a ring array are fixedly installed on the side of the bottom surface of the protective shell (4).

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