Device and method for automatically detecting concrete pouring liquid level of diaphragm wall

Abstract

The invention discloses an underground diaphragm wall concrete pouring liquid level automatic detection device and a detection method thereof. The device comprises a moving 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 invention 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] The invention relates to the technical field of building construction, and in particular to an automatic detection device for a ground-connected wall concrete pouring liquid level and a detection method thereof. Background Art

[0002] In the existing ground-anchored wall concrete pouring process, the elevation of the concrete pouring liquid surface is measured by combining the traditional measuring rope and hanging hammer method. However, this measuring method has the disadvantages of low measurement accuracy, large error, and poor timeliness. Summary of the invention

[0003] In order to overcome the defects of the prior art, an automatic detection device and a detection method for the concrete pouring liquid level of a ground-anchored wall are provided to solve the problem of low measurement accuracy and large error in measuring the elevation of the concrete pouring liquid level in the existing ground-anchored wall concrete pouring by using a traditional method combining a measuring rope and a hanging hammer method.

[0004] In order to achieve the above-mentioned purpose, a device for automatically detecting the liquid level of concrete pouring of ground-connected wall is provided, comprising:

[0005] Mobile frame;

[0006] A drum is rotatably mounted on the mobile frame, the mobile frame is equipped with a driving motor, the driving motor is drivingly connected to the drum, a sling is wound around the drum, 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 mounted on the drum shaft of the drum;

[0008] A weight connected to one end of the sling;

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

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

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

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

[0013] Furthermore, a second nozzle is installed on the movable frame, the second nozzle is aligned with the reel, and the fixed pulley is arranged above the reel;

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

[0015] Furthermore, one end of the receiving plate is connected to a desilting sleeve, the desilting sleeve is vertically arranged, the sling can be movably passed through the desilting sleeve, and the inner diameter of the desilting sleeve is adapted to the outer diameter of the sling.

[0016] The present invention provides a detection method of an automatic detection device for a ground-connected wall concrete pouring liquid level, comprising the following steps:

[0017] The mobile frame is set up above the notch of the channel of the ground-connected wall;

[0018] The pressure sensor collects the real-time pressure value on the fixed pulley;

[0019] The controller controls the driving motor, and the driving motor rotates forward to drive the drum to rotate forward, so that the sling is lowered;

[0020] During the lowering process of the sling, a weight at one end of the sling falls into the groove, and when the weight falls into the poured concrete layer in the groove, the real-time pressure value changes;

[0021] The controller acquires the real-time pressure value, and when the real-time pressure value changes, the controller controls the drive motor, and the drive motor reverses to lift the weight to the initial position, and the encoder collects the angular displacement of the reel at the same time;

[0022] Based on the angular displacement, the controller calculates the liquid level of the concrete layer.

[0023] The beneficial effect of the present invention is that the controller of the automatic detection device for the pouring liquid level of the ground-connected wall of the present invention controls the drive motor to retract and release the weight by monitoring the buoyancy change of the weight in different fluid media, and obtains the depth of the weight lowering through the encoder, thereby calculating the height of the pouring concrete liquid level in the groove of the movable ground-connected wall. Compared with the traditional measurement method, the measurement method of the automatic detection device for the pouring liquid level of the ground-connected wall of the present invention has high accuracy, small error and high detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0025] Figure 1 It is a schematic structural diagram of an automatic detection device for the liquid level of concrete pouring of a ground-anchored wall according to an embodiment of the present invention.

[0026] Figure 2 It is a side view of the automatic detection device for the liquid level of concrete pouring of the ground-anchored wall according to an embodiment of the present invention. DETAILED DESCRIPTION

[0027] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention. It is also necessary to explain that, for ease of description, only the parts related to the invention are shown in the accompanying drawings.

[0028] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0029] Reference Figure 1 and Figure 2 As shown, the present invention provides a device for automatically detecting the liquid level of concrete pouring of ground-connected wall, comprising: a moving frame 1, a reel 2, an encoder, a weight 3, a pressure sensor and a controller.

[0030] In this embodiment, the moving frame 1 is welded from square steel and is in the shape of a rectangular parallelepiped.

[0031] The reel 2 is rotatably mounted on the mobile frame 1. The mobile frame 1 is equipped with a driving motor 21. The driving motor 21 is transmission-connected to the reel 2. The reel 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.

[0032] As a preferred embodiment, the shaft of the driving motor 21 is connected to the reel 2 .

[0033] The encoder is mounted on the shaft of the drum 2. The weight 3 is connected to one end of the sling 22.

[0034] The pressure sensor is mounted on the fixed pulley 23 .

[0035] The controller is signal connected to the drive motor 21, the encoder and the pressure sensor.

[0036] The automatic detection device for the pouring liquid level of the ground-connected wall concrete of the present invention has a controller that controls the drive motor to retract and release the weight by monitoring the buoyancy change of the weight in different fluid media, and obtains the depth of the weight lowered by the encoder, thereby calculating the height of the pouring concrete liquid level in the channel of the movable ground-connected wall. Compared with the traditional measurement method, the measurement method of the automatic detection device for the pouring liquid level of the ground-connected wall concrete of the present invention has high accuracy, small error and high detection efficiency.

[0037] In this embodiment, a first nozzle 4 is installed on the moving frame 1, the first nozzle 4 is aligned with the fixed pulley 23, and the first nozzle 4 is connected to the water tank through a water pipe.

[0038] As a preferred embodiment, a second nozzle 5 is installed on the moving frame 1. The second nozzle 5 is aligned with the reel 2. The fixed pulley 23 is arranged above the reel 2.

[0039] In this embodiment, the mobile frame is equipped with a receiving pan 7. The receiving pan 7 is arranged below the fixed pulley 23 and the reel 2. One end of the receiving pan 7 is connected to a sedimentation tank 6 through a return pipe. The top of the sedimentation tank 6 is connected to the water tank through an overflow port.

[0040] As a preferred embodiment, one end of the receiving plate 7 is connected with a desilting sleeve 71. The desilting sleeve 71 is arranged vertically. The sling 22 can be movably inserted into the desilting sleeve 71. The inner diameter of the desilting sleeve 71 is adapted to the outer diameter of the sling 22.

[0041] After the sling is lowered into the groove of the ground-connected wall, cement slurry is attached to it, causing the cement on the sling to dry up on the drum. After a period of time, the sling cannot be retracted or unreeled normally or it is tangled on the drum, which also affects the detection of the number of meters of the weight. In addition, during the concrete pouring process, the deteriorated slurry on the upper part gradually becomes viscous. When the weight sinks into the initial viscous deteriorated slurry, its gravity will decrease, but it has not yet triggered the gravity limit. During the process of continuing to sink slowly, it may be wrapped by the concrete that is being poured and turned up. The minor problem is that the concrete liquid level is misjudged, and the major problem is that it cannot be lifted due to being wrapped.

[0042] The sling on the fixed pulley and the sling on the drum are flushed by the first nozzle and the second nozzle, so that the sling is cleanly wound on the drum, reducing the measurement error.

[0043] On the other hand, the mud removal sleeve can remove part of the cement slurry on the sling in advance when the sling is recovered.

[0044] The mud liquid after flushing by the first and second nozzles drips into the receiving pan. The mud liquid in the receiving pan is discharged into the sedimentation tank through the pipeline. After sedimentation, the mud liquid accumulated in the sedimentation tank flows into the water tank through the overflow port at the top of the sedimentation tank for recycling.

[0045] The present invention provides a detection method of an automatic detection device for a ground-connected wall concrete pouring liquid level, comprising the following steps:

[0046] S1. The mobile frame 1 is set up above the slot of the ground-connected wall.

[0047] S2. The pressure sensor collects the real-time pressure value on the fixed pulley 23.

[0048] S3, the controller controls the driving motor 21, and the driving motor 21 rotates forward to drive the reel 2 to rotate forward, so that the sling 22 is lowered.

[0049] S4. During the lowering process of the sling 22, the weight 3 at one end of the sling 22 falls into the groove. When the weight 3 falls into the poured concrete layer in the groove, the real-time pressure value changes.

[0050] S5, the controller obtains the real-time pressure value. When the real-time pressure value changes, the controller controls the drive motor 21, and the drive motor 21 reverses to lift the weight 3 to the initial position. At the same time, the encoder collects the angular displacement of the reel 2.

[0051] S6. Based on the angular displacement, the controller calculates the liquid level of the concrete layer.

[0052] The automatic detection device for the pouring liquid level of the ground-connected wall concrete of the present invention adopts an automatic detection trolley with a drum to simulate the action of manual rope measurement. A weight for detection is attached to one end of the sling (wire rope). The automatic detection device for the pouring liquid level of the ground-connected wall concrete of the present invention is provided with a lowering gravity limit, an ascending limit protection limit, and a motor overcurrent protection.

[0053] The automatic detection device for the liquid level of concrete pouring of the ground-connected wall of the present invention controls the forward and reverse and speed regulation of the driving motor of the drum by a controller (such as PLC). At the beginning of the detection, the driving motor drives the drum to lower the weight, and the encoder is used to measure the lowering depth. When the weight touches the liquid surface of the concrete, its gravity is reduced, and the gravity limiter is activated at this time. The controller stops the driving motor and automatically records the number of meters of the position. Later, the controller controls the driving motor to automatically reverse and lift. After lifting to the set rising time, the motor stops. After the set "circulation detection time" is reached, the second lowering detection is performed, and the cycle is repeated.

[0054] The controller is connected to a touch screen, which facilitates the adjustment of relevant parameters such as the cycle detection time, and can also record the volume of concrete trucks and the number of pipes removed, while displaying, saving and synchronously generating a concrete liquid level rise curve in real time.

[0055] The controller is connected to an external three-color alarm light column, which is mainly used to check the operating status of the equipment on site during detection. It can determine the motor running, bottoming out, rising to the top and overcurrent information.

[0056] The on-site LED electronic display screen is mainly used for automatic operation, which makes it convenient for on-site construction personnel to view real-time information.

[0057] In this embodiment, the depth of the existing groove section is detected at the beginning of use to check whether it matches the on-site depth value.

[0058] Specifically, the weight is controlled downward by gravity and stops automatically when the gravity at the bottom is reduced. Before detecting the depth of the trench section, the weight must be placed in a horizontal position.

[0059] The automatic detection speed of the drive motor is fixed and locked after debugging.

[0060] In the controller, the filling volume and pipe removal records rely on manual input.

[0061] The volume is automatically accumulated and saved after each input, and the relevant volume information is displayed in the lower right corner.

[0062] After each catheter is removed, the relevant removal information is displayed on the screen.

[0063] The controller calculates the theoretical liquid level of concrete based on the length, depth and thickness of the groove of the ground-connected wall, and determines the current status of concrete pouring by comparing the actual measured liquid level of concrete with the theoretical liquid level.

[0064] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the present application.

Claims

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

2. The automatic detection device for the liquid level of concrete pouring of ground-connected wall according to claim 1 is characterized in that: The drive motor shaft is connected to the reel.

3. The automatic detection device for the liquid level of concrete pouring of ground-connected wall according to claim 1 is characterized in that: A first nozzle is installed on the movable frame, the first nozzle is aligned with the fixed pulley, and the first nozzle is connected to a water tank through a water pipe.

4. The automatic detection device for the liquid level of concrete pouring of ground-connected wall according to claim 3 is characterized in that: A second nozzle is installed on the movable frame, the second nozzle is aligned with the reel, and the fixed pulley is arranged above the reel.

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

6. The automatic detection device for the liquid level of concrete pouring of ground-connected wall according to claim 5 is characterized in that: One end of the receiving plate is connected with a desilting sleeve, the desilting sleeve is vertically arranged, the sling can be movably passed through the desilting sleeve, and the inner diameter of the desilting sleeve is adapted to the outer diameter of the sling.

7. A detection method for the automatic detection device for pouring liquid level of ground-anchored wall concrete as claimed in any one of claims 1 to 6, characterized in that: The following steps are involved: The mobile frame is set up above the notch of the channel of the ground-connected wall; The pressure sensor collects the real-time pressure value on the fixed pulley; The controller controls the driving motor, and the driving motor rotates forward to drive the drum to rotate forward, so that the sling is lowered; During the lowering process of the sling, a weight at one end of the sling falls into the groove, and when the weight falls into the poured concrete layer in the groove, the real-time pressure value changes; The controller acquires the real-time pressure value, and when the real-time pressure value changes, the controller controls the drive motor, and the drive motor reverses to lift the weight to the initial position, and the encoder collects the angular displacement of the reel at the same time; Based on the angular displacement, the controller calculates the liquid level of the concrete layer.

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