A device for detecting displacement of foundation pit

Abstract

The present application discloses a device for detecting displacement of a foundation pit, and relates to the technical field of displacement detection of a foundation pit, including a reinforcement device installed in contact with the inner wall of the foundation pit and an alarm device fixedly installed at the center of the bottom wall of the foundation pit, and a detection assembly is arranged between the reinforcement device and the alarm device. The present application is provided by the coordination of structures such as a mounting platform, a sliding hole, an alarm light, a buzzer, and a transmission rod. Since the mounting platform is installed at the center of the bottom wall of the foundation pit, and the direction of collapse or displacement of the foundation pit is always toward the inside of the foundation pit, the mounting platform will not produce synchronous displacement with the side wall of the foundation pit when the side wall of the foundation pit collapses or shifts, and the sliding block can always be pushed to move by the transmission rod to trigger the alarm light or buzzer to alarm, which greatly improves the accuracy of the detection result, and avoids as much as possible the problem that the existing monitoring device cannot trigger the alarm device when the foundation pit support column and the fixed pile installed outside the foundation pit move toward the foundation pit at the same time, and the use has limitations.

Description

Technical Field

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

[0002] With the rapid development of the construction industry, in order to improve the utilization rate of ground area, high-rise buildings have gradually replaced various shorter buildings. The problem associated with high-rise buildings is the excavation of deep foundation pits, and deep foundation pits are accompanied by the problem of foundation pit side wall support. In order to judge the safety of foundation pit side wall support, the foundation pit side wall must be monitored in real time to improve the safety of construction.

[0003] The Chinese utility model patent with announcement number CN205557494U discloses an automatic monitoring device for foundation pit displacement, including: foundation pit support piles, supported on the foundation pit; a top ring beam, fixedly arranged above the foundation pit support piles; a fixed pile, supported on the outside of the foundation pit; a connecting rod, whose two ends are respectively connected to the top ring beam and the fixed pile; a monitoring mechanism connected to the connecting rod; the monitoring mechanism includes a sliding contact piece, a fixed contact unit, a display unit and a power supply unit connected in sequence to form a closed loop, one end of the sliding contact piece is fixedly connected to the connecting rod, and the other end of the sliding contact piece can be slidably connected to the fixed contact unit; the display unit can emit lights of different colors according to the different contact positions of the sliding contact piece and the fixed contact unit.

[0004] The above-mentioned monitoring device causes the monitoring mechanism to send out an alarm signal when the connecting rod becomes longer, and the lengthening of the connecting rod indicates that the distance between the foundation pit supporting piles and the fixed piles becomes longer. However, when the side walls of the foundation pit collapse or deform, the foundation pit supporting columns and the fixed piles installed outside the foundation pit may simultaneously move toward the foundation pit, making it impossible to accurately predict the displacement of the foundation pit. Utility Model Content

[0005] The utility model aims to solve or at least alleviate the problem that the existing monitoring device cannot trigger the alarm device when the foundation pit supporting column and the fixed pile installed outside the foundation pit move toward the foundation pit at the same time, and has limitations in use.

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

[0007] A device for detecting displacement of a foundation pit comprises a reinforcement device installed in contact with the inner wall of the foundation pit and an alarm device fixedly installed at the center of the bottom wall of the foundation pit, a detection assembly is arranged between the reinforcement device and the alarm device, the alarm device comprises a mounting platform arranged at the center of the foundation pit, sliding holes are arranged on the four side walls of the mounting platform, a first contact switch is installed on the inner wall of each sliding hole, an alarm light electrically connected to the corresponding first contact switch is fixedly connected to the upper surface of the mounting platform, a buzzer is fixedly connected to the center of the upper surface of the mounting platform, a second contact switch capable of independently controlling the activation of the buzzer is fixedly connected to the inner wall of each sliding hole close to the buzzer, the detection assembly comprises a slider slidably connected in the inner cavity of each sliding hole, a transmission rod is fixedly connected to the outer wall of the slider, and an end of the transmission rod away from the slider is fixedly connected to the reinforcement device.

[0008] By adopting the above technical scheme, when using, the user first fixes the mounting platform in the center position of the inner wall of the foundation pit through the upper sliding tube, the lower sliding tube and the spike part, and then inserts the sliding block into the corresponding sliding hole opening end on the side away from the transmission rod, and adjusts the length of the transmission rod so that the other end of the transmission rod is fixedly connected to the inner wall of the ring beam on the corresponding side. When the inner wall of the foundation pit is displaced or collapsed, the ring beam on the same side is displaced to push the transmission rod to move, thereby pushing the sliding block to slide into the sliding hole through the transmission rod, triggering the first contact switch or the second contact switch, so that the alarm light or buzzer is activated to alarm and remind the construction personnel. Since the direction of foundation pit collapse or displacement is always toward the inside of the foundation pit, the mounting platform will not be synchronously displaced with the side wall of the foundation pit when the side wall of the foundation pit collapses or shifts, which greatly improves the accuracy of the detection result and avoids the problem that the existing monitoring device cannot trigger the alarm device when the foundation pit support column and the fixed pile installed outside the foundation pit move toward the foundation pit at the same time, and has limitations in use.

[0009] Optionally, the reinforcement device includes a plurality of supporting piles vertically installed along the inner wall of the foundation pit, the bottom ends of the plurality of supporting piles are inserted into the bottom wall of the foundation pit, and a ring beam with the same annular structure is provided above the top ends of the plurality of supporting piles.

[0010] By adopting the above technical solution, multiple supporting piles are set to support the inner wall of the foundation pit to avoid collapse of the inner wall of the foundation pit as much as possible. Ring beams are set to connect multiple supporting piles to form a whole, thereby improving the stability of the supporting piles.

[0011] Optionally, an upper sliding tube is fixedly connected to the bottom of the mounting platform, a lower sliding tube slidably connected to the upper sliding tube is sleeved on the bottom end of the upper sliding tube, a limiting bolt is passed through the connection between the lower sliding tube and the upper sliding tube, and the limiting bolt passes through the outer wall of the lower sliding tube and abuts against the upper sliding tube.

[0012] By adopting the above technical solution, an upper sliding pipe and a lower sliding pipe that can slide against each other are installed at the bottom of the mounting platform, so that the user can slide the upper sliding pipe and the lower sliding pipe toward or against each other according to the depth of the foundation pit, and then fix them with limit bolts, thereby adjusting the height of the mounting platform and making the mounting platform flush with the height of the ring beam.

[0013] Optionally, the bottom end of the downward descending tube extends downward to form a spike portion with a conical structure, and a support plate with a disc-shaped structure is welded at the connection between the downward descending tube and the spike portion.

[0014] By adopting the above technical solution, a spike portion is provided for inserting the downwardly descending tube into the center position of the bottom wall of the foundation pit, and the support plate can not only serve as a pedal, which is convenient for the user to insert the spike portion into the bottom wall of the foundation pit by stepping on the support plate, but also after the spike portion is inserted, the support plate can fit with the bottom wall of the foundation pit and provide support from the surrounding side, thereby improving the stability of the installation of the mounting platform.

[0015] Optionally, there are multiple groups of first contact switches installed in the inner cavity of each sliding hole, the distances between the multiple groups of first contact switches and the slider are different, and the alarm lights electrically connected to each group of first contact switches generate different colors of light after being powered on.

[0016] By adopting the above technical solution, multiple groups of first contact switches are set and connected to alarm lights of different colors, so that users can understand the displacement size of the side wall of the foundation pit according to the color of the triggered alarm light, which is convenient for users.

[0017] Optionally, a mobile power source is embedded in the upper sliding tube, the warning light is connected in series with the first contact switch and then electrically connected to the mobile power source, and the buzzer is connected in series with the second contact switch and then electrically connected to the mobile power source.

[0018] By adopting the above technical solution, a mobile power supply is provided to power the alarm light and the buzzer, so that the user does not need an external power supply, thereby making the installation of the overall detection device more convenient and safer.

[0019] Optionally, the length of the transmission rod can be telescopically adjusted, and the end of the transmission rod away from the sliding block is inserted into the inner cavity of the socket fixedly connected to the side wall of the ring beam.

[0020] By adopting the above technical solution, the length of the transmission rod is set to be telescopically adjustable, so that the user can adjust the length of the transmission rod according to the distance between the slider and the side wall of the ring beam, which is convenient for the user to use.

[0021] In summary, the beneficial effects of this application are as follows:

[0022] The present application coordinates the structures such as the mounting platform, the sliding hole, the alarm light, the buzzer and the transmission rod. Since the mounting platform is installed at the center of the bottom wall of the foundation pit, and the direction of collapse or displacement of the foundation pit is always toward the inside of the foundation pit, the mounting platform will not produce synchronous displacement with the side wall of the foundation pit when the side wall of the foundation pit collapses or shifts. The sliding block can always be pushed to move by the transmission rod to trigger the alarm light or buzzer to turn on the alarm, which greatly improves the accuracy of the detection result and avoids the problem that the existing monitoring device cannot trigger the alarm device when the foundation pit supporting column and the fixed pile installed outside the foundation pit move toward the foundation pit at the same time, and has limitations in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a top view of the overall structure of this application;

[0024] Figure 2 This application Figure 1 A magnified view of the local details at center A;

[0025] Figure 3 It is a schematic diagram of the fixed structure of the mounting platform of this application.

[0026] Explanation of the reference numerals in the accompanying drawings: 1. Support pile; 2. Ring beam; 3. Mounting platform; 4. Upper sliding tube; 5. Lower sliding tube; 6. Spike; 7. Support plate; 8. Sliding hole; 9. First contact switch; 10. Warning light; 11. Buzzer; 12. Second contact switch; 13. Mobile power supply; 14. Transmission rod; 15. Socket; 16. Slider. DETAILED DESCRIPTION

[0027] The following is combined with Figure 1-3 This application is described in further detail.

[0028] See also Figure 1-3 A displacement detection device for a foundation pit includes a reinforcement device installed in contact with the inner wall of the foundation pit and an alarm device fixedly installed at the center of the bottom wall of the foundation pit, and a detection component is arranged between the reinforcement device and the alarm device. The reinforcement device is arranged to support the inner wall of the foundation pit to avoid collapse or displacement of the inner wall of the foundation pit as much as possible. When the inner wall of the foundation pit is displaced, the detection component arranged between the reinforcement device and the alarm device will be pushed to displace synchronously, thereby triggering the alarm device to alarm.

[0029] The alarm device includes a mounting platform 3 arranged at the center of the foundation pit, and sliding holes 8 are provided on the four side walls of the mounting platform 3. A first contact switch 9 is installed on the inner wall of each sliding hole 8, and an alarm light 10 electrically connected to the corresponding first contact switch 9 is fixedly connected to the upper surface of the mounting platform 3. When the inner wall of the foundation pit is slightly displaced, the detection component will be pushed to move synchronously, triggering the first contact switch 9 to turn on the alarm light 10. The flashing of the alarm light 10 reminds the construction personnel that the inner wall of the foundation pit is displaced, there is danger, and the inner wall of the foundation pit needs to be reinforced as soon as possible.

[0030] A buzzer 11 is fixedly connected to the center of the upper surface of the mounting platform 3, and a second contact switch 12 which can independently control the activation of the buzzer 11 is fixedly connected to the inner wall of each sliding hole 8 close to the buzzer 11. When the inner wall of the foundation pit has a large displacement or collapses, it will push the detection component to have a large displacement, thereby triggering the second contact switch 12, so that the buzzer 11 is activated to generate an alarm sound, reminding the surrounding construction personnel to evacuate quickly to avoid personal injury.

[0031] The detection component includes a slider 16 slidably connected in the inner cavity of each sliding hole 8, a transmission rod 14 is fixedly connected to the outer wall of the slider 16, and the end of the transmission rod 14 away from the slider 16 is fixedly connected to the reinforcement device. When the side wall of the foundation pit is displaced or collapsed and pushes the transmission rod 14, the transmission rod 14 squeezes the slider 16 to slide into the inner cavity of the sliding hole 8, thereby triggering the first contact switch 9 and the second contact switch 12 in turn, so that the alarm light 10 and the buzzer 11 are activated to alarm.

[0032] Reference Figure 1 The reinforcement device includes a plurality of support piles 1 vertically installed along the inner wall of the foundation pit, the bottom ends of the plurality of support piles 1 are inserted into the bottom wall of the foundation pit, and a ring beam 2 of the same annular structure is arranged above the top of the plurality of support piles 1. The plurality of support piles 1 are arranged to support the inner wall of the foundation pit to avoid the collapse of the inner wall of the foundation pit as much as possible, and the ring beam 2 is arranged to connect the plurality of support piles 1 into a whole to improve the stability of the support of the support piles 1.

[0033] Reference Figure 3 The bottom of the mounting platform 3 is fixedly connected with an upper slide tube 4, and the bottom end of the upper slide tube 4 is sleeved with a lower slide tube 5 slidably connected to the upper slide tube 4. A limit bolt is penetrated at the connection between the lower slide tube 5 and the upper slide tube 4, and the limit bolt penetrates the outer wall of the lower slide tube 5 and abuts against the upper slide tube 4. The upper slide tube 4 and the lower slide tube 5 that can slide against each other are installed at the bottom of the mounting platform 3, so that the user can slide the upper slide tube 4 and the lower slide tube 5 toward or in the opposite direction according to the depth of the foundation pit, and then fix them with the limit bolt, so as to adjust the height of the mounting platform 3 so that the mounting platform 3 is flush with the height of the ring beam 2.

[0034] Reference Figure 3The bottom end of the lower tube 5 extends downward to form a spike portion 6 of a conical structure, and a support plate 7 of a disc-shaped structure is welded at the connection between the lower tube 5 and the spike portion 6. The spike portion 6 is used to insert the lower tube 5 into the center of the bottom wall of the foundation pit. The support plate 7 can not only serve as a pedal, which is convenient for the user to insert the spike portion 6 into the bottom wall of the foundation pit by stepping on the support plate 7, but also after the spike portion 6 is inserted, the support plate 7 can fit with the bottom wall of the foundation pit, and provide support from the surrounding side, thereby improving the stability of the installation of the mounting platform 3.

[0035] Reference Figure 3 There are multiple groups of first contact switches 9 installed in the inner cavity of each slide hole 8, and the spacing between the multiple groups of first contact switches 9 and the slider 16 is different. The color of light generated by the warning light 10 electrically connected to each group of first contact switches 9 after power is turned on is different. Multiple groups of first contact switches 9 are set and connected to warning lights 10 of different colors, so that users can understand the displacement of the side wall of the foundation pit according to the color of the triggered warning light 10, which is convenient for users to use.

[0036] Reference Figure 3 A mobile power source 13 is embedded in the upper slide tube 4, the warning light 10 is electrically connected to the mobile power source 13 after being connected in series with the first contact switch 9, and the buzzer 11 is electrically connected to the mobile power source 13 after being connected in series with the second contact switch 12. The mobile power source 13 is provided to power the warning light 10 and the buzzer 11, so that the user does not need an external power source, thereby making the installation of the overall detection device more convenient and safer.

[0037] Reference Figure 1 The length of the transmission rod 14 can be adjusted telescopically, and the end of the transmission rod 14 away from the slider 16 is inserted into the inner cavity of the socket 15 fixedly connected to the side wall of the ring beam 2. The length of the transmission rod 14 is set to be telescopically adjustable, so that the user can adjust the length of the transmission rod 14 according to the distance between the slider 16 and the side wall of the ring beam 2, which is convenient for the user to use.

[0038] The implementation principle of the present application is as follows: when in use, the user first fixes the mounting platform 3 in the center position of the inner wall of the foundation pit through the upper sliding tube 4, the lower sliding tube 5 and the spike portion 6, and then inserts the sliding block 16 into the corresponding sliding hole 8 opening end away from the side of the transmission rod 14, and adjusts the length of the transmission rod 14 so that the other end of the transmission rod 14 is fixedly connected to the inner wall of the ring beam 2 on the corresponding side. When the inner wall of the foundation pit is displaced or collapsed, the ring beam 2 on the same side is displaced to push the transmission rod 14 to move, thereby pushing the sliding block 16 to slide into the sliding hole 8 through the transmission rod 14, triggering the first contact switch 9 or the second contact switch 12, so that the alarm light 10 or the buzzer 11 starts to alarm and remind the construction personnel. Since the direction of collapse or displacement of the foundation pit is always toward the inside of the foundation pit, the mounting platform 3 will not be synchronously displaced with the side wall of the foundation pit when the side wall of the foundation pit collapses or shifts, which greatly improves the accuracy of the detection result and avoids the problem that the existing monitoring device cannot trigger the alarm device when the foundation pit support column and the fixed pile installed outside the foundation pit move toward the foundation pit at the same time, and has limitations in use.

[0039] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A displacement detection device for a foundation pit, comprising a reinforcement device mounted on the inner wall of the foundation pit and an alarm device fixedly mounted at the center of the bottom wall of the foundation pit, wherein a detection component is arranged between the reinforcement device and the alarm device, and characterized in that: The alarm device comprises a mounting platform (3) arranged at the center of the foundation pit, the side walls of the mounting platform (3) are provided with sliding holes (8), the inner wall of each sliding hole (8) is provided with a first contact switch (9), the upper surface of the mounting platform (3) is fixedly connected with an alarm light (10) electrically connected to the corresponding first contact switch (9), the center of the upper surface of the mounting platform (3) is fixedly connected with a buzzer (11), the inner wall of each sliding hole (8) close to the buzzer (11) is fixedly connected with a second contact switch (12) capable of independently controlling the activation of the buzzer (11), and the detection component comprises a slider (16) slidably connected in the inner cavity of each sliding hole (8), a transmission rod (14) is fixedly connected to the outer wall of the slider (16), and the end of the transmission rod (14) away from the slider (16) is fixedly connected to the reinforcement device.

2. The device for detecting displacement of a foundation pit according to claim 1, characterized in that: The reinforcement device comprises a plurality of support piles (1) vertically installed along the inner wall of the foundation pit, the bottom ends of the plurality of support piles (1) are all inserted into the inside of the bottom wall of the foundation pit, and a ring beam (2) of the same annular structure is provided above the top ends of the plurality of support piles (1).

3. The device for detecting displacement of a foundation pit according to claim 1, characterized in that: An upper sliding tube (4) is fixedly connected to the bottom of the mounting platform (3); a lower sliding tube (5) is sleeved on the bottom end of the upper sliding tube (4) and is slidably connected to the upper sliding tube (4); a limiting bolt is passed through the connection between the lower sliding tube (5) and the upper sliding tube (4); the limiting bolt passes through the outer wall of the lower sliding tube (5) and abuts against the upper sliding tube (4).

4. The device for detecting displacement of a foundation pit according to claim 3, characterized in that: The bottom end of the downward descending tube (5) extends downward to form a spike portion (6) with a conical structure, and a support plate (7) with a disc-shaped structure is welded at the connection between the downward descending tube (5) and the spike portion (6).

5. The device for detecting displacement of a foundation pit according to claim 1, characterized in that: There are multiple groups of the first contact switches (9) installed in the inner cavity of each sliding hole (8), the spacing between the multiple groups of the first contact switches (9) and the sliding block (16) is different, and the color of the light generated by the warning light (10) electrically connected to each group of the first contact switches (9) after being powered on is different.

6. The device for detecting displacement of a foundation pit according to claim 4, characterized in that: A mobile power source (13) is embedded in the upper sliding tube (4); the warning light (10) is connected in series with the first contact switch (9) and then electrically connected to the mobile power source (13); the buzzer (11) is connected in series with the second contact switch (12) and then electrically connected to the mobile power source (13).

7. The device for detecting displacement of a foundation pit according to claim 2, characterized in that: The length of the transmission rod (14) can be adjusted by telescopic means, and one end of the transmission rod (14) away from the sliding block (16) is inserted into the inner cavity of a socket (15) fixedly connected to the side wall of the ring beam (2).

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