Automatic detection device for concrete pouring liquid level of diaphragm wall

Abstract

The utility model discloses an underground diaphragm wall concrete pouring liquid level automatic detection device. The device comprises a mobile frame; the winding drum is rotatably mounted on the movable frame, a driving motor is mounted on the movable frame, the driving motor is in transmission connection with the winding drum, a sling is wound on the winding drum, a fixed pulley is mounted on the movable frame, and the middle of the sling is wound on the fixed pulley; the encoder is arranged on a drum shaft of the winding drum; the heavy hammer is connected to one end of the sling; the pressure sensor is mounted on the fixed pulley; and the controller is in signal connection with the driving motor, the encoder and the pressure sensor. The utility model solves the problems of low measurement precision and large error when the elevation of the concrete pouring liquid level is measured by adopting a traditional method of combining a measuring rope and a drop hammer method in the existing concrete pouring of the underground diaphragm wall.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, specifically to an automatic detection device for the liquid level of concrete pouring in diaphragm walls. Background Technology

[0002] In the current process of diaphragm wall concrete pouring, the traditional method of combining measuring rope and plumb bob is used to measure the elevation of the concrete pouring liquid level. However, this method has disadvantages such as low measurement accuracy, large error and poor timeliness. Utility Model Content

[0003] To overcome the shortcomings of existing technologies, an automatic detection device for the concrete pouring level of diaphragm walls is provided. This device addresses the problems of low measurement accuracy and large errors in measuring the concrete pouring level using the traditional method of combining measuring rope and plumb bob.

[0004] To achieve the above objectives, an automatic detection device for the concrete pouring level of a diaphragm wall is provided, comprising:

[0005] Mobile chassis;

[0006] A drum is rotatably mounted on the mobile frame, the mobile frame is equipped with a drive motor, the drive motor is drivenly connected to the drum, the drum is wound with a sling, a fixed pulley is mounted on the mobile frame, and the middle part of the sling is wound around the fixed pulley;

[0007] An encoder is mounted on the shaft of the reel;

[0008] A counterweight is attached to one end of the sling;

[0009] A pressure sensor is mounted on the fixed pulley;

[0010] The controller is connected to the drive motor, the encoder, and the pressure sensor.

[0011] Furthermore, the drive motor shaft is connected to the drum.

[0012] Furthermore, a first nozzle is installed on the mobile frame, the first nozzle is aligned with the fixed pulley, and the first nozzle is connected to a water tank through a water supply pipe.

[0013] Furthermore, a second nozzle is installed on the mobile frame, the second nozzle is aligned with the drum, and the fixed pulley is positioned above the drum;

[0014] Furthermore, the mobile frame is equipped with a receiving plate, which is located below the fixed pulley and the drum. One end of the receiving plate is connected to a sedimentation tank through a return pipe, and the top of the sedimentation tank is connected to the water tank through an overflow port.

[0015] Furthermore, one end of the receiving plate is connected to a mud removal sleeve, which is vertically arranged. The sling is movably inserted into the mud removal sleeve, and the inner diameter of the mud removal sleeve is adapted to the outer diameter of the sling.

[0016] The beneficial effects of this invention are as follows: the automatic detection device for the concrete pouring level of the diaphragm wall uses a controller that monitors the buoyancy change of a weight in different fluid media to control the drive motor to raise and lower the weight, and uses an encoder to obtain the lowering depth of the weight, thereby calculating the height of the concrete pouring level in the channel of the movable diaphragm wall. Compared with traditional measurement methods, the automatic detection device for the concrete pouring level of the diaphragm wall of this invention has high accuracy, small error, and high detection efficiency. Attached Figure Description

[0017] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0018] Figure 1 This is a schematic diagram of the automatic detection device for the diaphragm wall concrete injection liquid level according to an embodiment of the present invention.

[0019] Figure 2 This is a side view of the automatic detection device for the concrete pouring liquid level of the diaphragm wall according to an embodiment of the present invention. Detailed Implementation

[0020] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant utility model and not intended to limit the scope of the utility model. Furthermore, it should be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings.

[0021] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0022] Reference Figure 1 and Figure 2 As shown, this utility model provides an automatic detection device for the liquid level of diaphragm wall concrete pouring, including: a mobile frame 1, a drum 2, an encoder, a counterweight 3, a pressure sensor, and a controller.

[0023] In this embodiment, the mobile frame 1 is welded from square steel. The mobile frame is rectangular in shape.

[0024] The drum 2 is rotatably mounted on the mobile frame 1. The mobile frame 1 is equipped with a drive motor 21. The drive motor 21 is connected to the drum 2. The drum 2 is wound with a sling 22. A fixed pulley 23 is mounted on the mobile frame 1. The middle part of the sling 22 is wound around the fixed pulley 23.

[0025] In a preferred embodiment, the drive motor 21 is connected to the drum 2 on its shaft.

[0026] The encoder is mounted on the shaft of the drum 2. The counterweight 3 is connected to one end of the sling 22.

[0027] The pressure sensor is mounted on the fixed pulley 23.

[0028] The controller signal is connected to the drive motor 21, the encoder, and the pressure sensor.

[0029] This invention relates to an automatic detection device for the concrete pouring level in diaphragm walls. The controller monitors the buoyancy changes of a weight in different fluid media, controls the drive motor to raise and lower the weight, and obtains the lowering depth of the weight via an encoder. This information is then used to calculate the height of the concrete pouring level in the channel of the movable diaphragm wall. Compared with traditional measurement methods, this automatic detection device for diaphragm wall concrete pouring levels offers higher accuracy, smaller errors, and higher detection efficiency.

[0030] In this embodiment, a first nozzle 4 is installed on the mobile frame 1. The first nozzle 4 is aligned with the fixed pulley 23. The first nozzle 4 is connected to a water tank through a water supply pipe.

[0031] In a preferred embodiment, a second nozzle 5 is mounted on the mobile frame 1. The second nozzle 5 is aligned with the drum 2. A fixed pulley 23 is positioned above the drum 2.

[0032] In this embodiment, a receiving plate 7 is installed on the mobile frame. The receiving plate 7 is located below the fixed pulley 23 and the drum 2. One end of the receiving plate 7 is connected to the sedimentation tank 6 through a return pipe. The top of the sedimentation tank 6 is connected to the water tank through an overflow port.

[0033] In a preferred embodiment, one end of the receiving plate 7 is connected to a descaling sleeve 71. The descaling sleeve 71 is vertically oriented. The lifting cable 22 is movably threaded through the descaling sleeve 71. The inner diameter of the descaling sleeve 71 is adapted to the outer diameter of the lifting cable 22.

[0034] Cement slurry adhered to the sling after it was lowered into the diaphragm wall, causing the cement to harden on the drum. After a period of time, the sling could not be properly wound or unwound, or it would become tangled on the drum, also affecting the measurement of the weight's length. Furthermore, during concrete pouring, the deteriorated slurry at the top gradually became viscous. When the weight initially sank into the viscous, deteriorated slurry, its weight decreased, but it had not yet triggered the gravity limit. As it continued to slowly sink, it was sometimes encased by the concrete being poured upwards. Minor problems resulted in misjudging the concrete level; major problems included being encased and unable to be lifted.

[0035] The first and second nozzles are used to wash the slings on the fixed pulley and the drum, so that the slings are cleanly wound onto the drum, reducing measurement errors.

[0036] On the other hand, the mud removal sleeve can remove some of the cement slurry from the slings before they are retrieved.

[0037] The mud slurry after being flushed by the first and second nozzles drips into the receiving pan. The mud slurry in the receiving pan is then discharged into the settling tank through pipelines. After settling, the mud slurry that accumulates in the settling tank flows into the water tank through the overflow port at the top of the settling tank for recycling.

[0038] This utility model provides a detection method for an automatic detection device for the liquid level of diaphragm wall concrete pouring, comprising the following steps:

[0039] S1. The mobile frame 1 is mounted above the opening of the channel of the diaphragm wall.

[0040] S2, The pressure sensor collects the real-time pressure value on the fixed pulley 23.

[0041] S3. The controller controls the drive motor 21, and the drive motor 21 rotates in the forward direction to drive the drum 2 to rotate in the forward direction, so that the sling 22 is lowered.

[0042] S4. During the lowering of the sling 22, the weight 3 at one end of the sling 22 falls into the channel. When the weight 3 falls into the concrete layer in the channel, the real-time pressure value changes.

[0043] S5. The controller acquires the real-time pressure value. When the real-time pressure value changes, the controller controls the drive motor 21 to reverse and lift the counterweight 3 to the initial position. At the same time, the encoder collects the angular displacement of the drum 2.

[0044] S6. Based on angular displacement, the controller calculates the liquid level height of the concrete layer.

[0045] This utility model's automatic detection device for the level of concrete pouring in diaphragm walls employs an automatic detection trolley with an attached drum, simulating the action of manual rope measurement. A detection weight is attached to one end of the sling (steel wire rope). This utility model's automatic detection device for the level of concrete pouring in diaphragm walls is equipped with a lowering gravity limit, an upward limit protection limit, and motor overcurrent protection.

[0046] This utility model discloses an automatic detection device for the concrete pouring level of a diaphragm wall. A controller (such as a PLC) controls the forward and reverse rotation and speed adjustment of the drive motor of the drum. At the start of the detection, the drive motor drives the drum, lowering the weight. An encoder measures the lowering depth. When the weight contacts the concrete surface, its weight decreases, triggering a gravity limit switch. The controller stops the drive motor and automatically records the distance in meters at that position. Shortly after, the controller controls the drive motor to automatically reverse and lift the weight. After a set lifting time, the motor stops. The second lowering detection is performed after the set "cycle detection time" has elapsed, and this process is repeated.

[0047] The controller is connected to a touch screen, which allows for easy adjustment of parameters such as the cycle detection time, and can also record the volume of concrete arriving and the number of pipes dismantled, while displaying, saving, and simultaneously generating a concrete liquid level rise curve in real time.

[0048] The controller is connected to an external three-color alarm light column. The three-color alarm light column is mainly set up to check the operating status of the equipment on site during testing. It can identify motor running, bottoming out, rising to the top, and overcurrent information.

[0049] The on-site LED electronic display board is mainly used to facilitate on-site construction personnel to view real-time information during automatic operation.

[0050] In this embodiment, the depth of the existing trench section is initially probed to verify whether it matches the depth value on site.

[0051] Specifically, the weight will be controlled by gravity as it descends, and will stop automatically when it reaches the bottom and the gravity lessens. Before measuring the depth of the trench section, the weight must first be positioned on a horizontal plane.

[0052] The automatic detection speed of the drive motor is fixed and will be locked after debugging.

[0053] In the controller, the injection volume and pipe dismantling records are manually entered.

[0054] The volume is automatically accumulated and saved after each input, and the relevant volume information is displayed in the lower right corner.

[0055] After each catheter is removed, the relevant removal information is displayed on the screen.

[0056] The controller calculates the theoretical liquid level of the concrete based on the length, depth, and thickness of the channel in the diaphragm wall, and determines the current status of concrete pouring by comparing the actual liquid level with the theoretical liquid level.

[0057] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the utility model involved in this application is not limited to the technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. An automatic detection device for the liquid level of diaphragm wall concrete pouring, characterized in that, include: Mobile chassis; A drum is rotatably mounted on the mobile frame, the mobile frame is equipped with a drive motor, the drive motor is drivenly connected to the drum, the drum is wound with a sling, a fixed pulley is mounted on the mobile frame, and the middle part of the sling is wound around the fixed pulley; An encoder is mounted on the shaft of the reel; A counterweight is attached to one end of the sling; A pressure sensor is mounted on the fixed pulley; The controller is connected to the drive motor, the encoder, and the pressure sensor.

2. The automatic detection device for the concrete pouring level of the diaphragm wall according to claim 1, characterized in that, The drive motor shaft is connected to the drum.

3. The automatic detection device for the concrete pouring level of the diaphragm wall according to claim 1, characterized in that, The mobile frame is equipped with a first nozzle, which is aligned with the fixed pulley. The first nozzle is connected to a water tank via a water supply pipe.

4. The automatic detection device for the concrete pouring level of the diaphragm wall according to claim 3, characterized in that, A second nozzle is mounted on the mobile frame and is aligned with the drum. The fixed pulley is positioned above the drum.

5. The automatic detection device for the concrete pouring level of the diaphragm wall according to claim 4, characterized in that, The mobile frame is equipped with a receiving plate, which is located below the fixed pulley and the drum. One end of the receiving plate is connected to a sedimentation tank through a return pipe, and the top of the sedimentation tank is connected to the water tank through an overflow port.

6. The automatic detection device for the concrete pouring level of the diaphragm wall according to claim 5, characterized in that, One end of the receiving plate is connected to a mud removal sleeve, which is vertically arranged. The sling is movably inserted into the mud removal sleeve, and the inner diameter of the mud removal sleeve is adapted to the outer diameter of the sling.

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