A jet-balanced underground continuous wall joint brushing device

Abstract

The present invention relates to a jet-balanced underground continuous wall joint brushing device, comprising a brushing module, a suspension module and a control module. The suspension module is connected to the brushing module and is used to suspend the brushing module, lower the brushing module along the joint to the bottom of the groove section, and move it up and down along the continuous wall joint; the control module is connected to the brushing module and the suspension module and is used to control the brushing module to move slowly from bottom to top along the underground continuous wall joint to perform a brushing operation. Compared with existing brushing devices, the volume of the device of the present invention is significantly reduced. By reserving a brushing bin in the steel cage, the brushing operation can be performed after the steel cage is lowered, and the mud generated during the lowering of the steel cage and the pouring of concrete can be cleaned. Compared with existing brushing devices, the brushing force of the present invention is not limited by the depth of the underground continuous wall, is stable and adjustable, and can significantly improve the brushing effect.

Description

Technical Field

[0001] The invention relates to a wall brushing technology for joints between slot sections during construction of an underground continuous wall, in particular to a jet-balanced underground continuous wall joint wall brushing device. Background Art

[0002] As urban underground space development in my country progresses into deeper strata, foundation pit support becomes increasingly challenging. Underground diaphragm wall technology, due to its high support strength and excellent sealing properties, has become the predominant retaining structure for deep foundation pit projects. Underground diaphragm walls are constructed in sections, and the joints between sections are prone to inclusion of undesirable media such as sediment and silt, leading to cracks after completion and subsequent leakage. Therefore, brushing is required during construction to improve the cleanliness of the trench joints and their anti-seepage properties. This process is known in engineering as brushing.

[0003] The effectiveness of the wall brushing device is the basis for ensuring the wall brushing effect. At present, most wall brushing devices use gravity-type wire brushes, that is, a wire brush is installed on the side of the weight hammer device, and then the upper end of the weight hammer suspension rope is close to the underground continuous wall joint, so that the weight hammer generates a lateral force toward the joint, and relies on this lateral force to brush the joint. However, the effect of this type of wall brushing device is not ideal, and it has two main disadvantages: first, the lateral force of the wall brushing device on the underground continuous wall joint is controlled by the inclination angle of the suspension rope. The greater the inclination angle, the greater the force. When the depth of the underground continuous wall is too large, the inclination angle of the suspension rope is limited, resulting in insufficient wall brushing force and poor brushing effect; second, the weight hammer is too large and needs to occupy the space of the steel cage, resulting in wall brushing can only be carried out before the steel cage is lowered, and it is powerless to deal with the mud trapped during the lowering of the steel cage and the pouring of concrete.

[0004] In summary, to improve wall-brushing effectiveness, wall-brushing devices should be improved to stabilize the brushing force and be miniaturized. This invention replaces wire brushes with jets; eliminates the weight, and instead generates a balancing jet on the side of the device facing away from the joints in the underground continuous wall trench section, stabilizing the device's horizontal position within the trench section. This technical approach stabilizes the brushing force while miniaturizing the wall-brushing device. Summary of the Invention

[0005] The purpose of the present invention is to provide a jet-balanced underground continuous wall joint brushing device with stable brushing force and small size, which is used to improve the brushing effect of underground continuous wall joint construction and enhance the anti-seepage performance of underground continuous wall.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] A jet-balanced underground continuous wall joint wall brushing device includes a wall brushing module, a suspension module and a control module. The suspension module is connected to the wall brushing module and is used to suspend the wall brushing module, lower the wall brushing module along the joint to the bottom of the groove section, and move it up and down along the continuous wall joint; the control module is connected to the wall brushing module and the suspension module and is used to control the wall brushing module to move slowly from bottom to top along the underground continuous wall joint to perform brushing operations.

[0008] Furthermore, the wall brushing module includes a shell, a slurry inlet, a high-pressure pump, a slurry storage tank, a slurry separation tank, a solenoid valve, a wall brushing nozzle and a balancing nozzle, wherein the slurry inlet, the wall brushing nozzle and the balancing nozzle all pass through the shell and are tightly connected to the shell, and the high-pressure pump, the slurry storage tank and the slurry separation tank are respectively fixed inside the shell; the slurry inlet is located at the center of the lower end of the shell and is connected to the high-pressure pump located in the lower part of the shell; the slurry storage tank is located in the middle and upper part of the shell and is respectively connected to the high-pressure pump, the slurry separation tank and the balancing nozzle through pipelines, and a solenoid valve is provided in the connecting pipelines with the slurry separation tank and the balancing nozzle; there are 5 wall brushing nozzles in total, which are located on the side of the shell, arranged in parallel from top to bottom, together with the slurry separation tank located on the side of the shell; there are 5 balancing nozzles in total, which are located on the other side opposite to the wall brushing nozzle.

[0009] Furthermore, the balancing nozzles are arranged in a manner of 2 at the top, 1 in the middle, and 2 at the bottom.

[0010] Furthermore, the suspension module includes a suspension ring, a cable, a rope buckle, a rope winder, a suspension motor and a suspension frame, wherein the suspension ring is a semicircular ring, and the end face is connected to the outer shell of the wall brushing module; one end of the cable is passed around the suspension ring and fixed to the rope body by the rope buckle, and the other end is connected to the rope winder, and part of the rope segment is wrapped around the outside of the rope winder; the central axis of the rope winder is connected to the output rod of the suspension motor and rotates synchronously with the suspension motor; the suspension motor is fixed to the upper end of the suspension frame.

[0011] Furthermore, the control module includes an electronic gyroscope, an electrical control box, a control cable and a control computer, wherein the electronic gyroscope is fixed inside the shell of the wall brush module; the control cable passes through the shell, one end is connected to the electrical control box, and the other end is connected to the electronic gyroscope, the high-pressure pump and each solenoid valve; the control computer is connected to the electrical control box and the suspension motor respectively through data cables.

[0012] A method for using a jet-balanced underground continuous wall joint brushing device. During underground continuous wall construction, a suspension module is used to lower the brushing module along the joint to the bottom of the trough section. A control computer is operated through an electrical control box to activate the brushing module. Cement slurry from the concrete in the trough section is drawn into the suspension module's slurry reservoir by a high-pressure pump. The control computer then adjusts the spraying conditions of the brushing nozzles by controlling solenoid valves in the pipeline connecting the slurry reservoir and the distribution tank, generating a stable and effective brushing force. Simultaneously, the control computer adjusts the spraying conditions of each balancing nozzle based on parameters from an electronic gyroscope by controlling solenoid valves in the pipeline connecting the slurry reservoir and the balancing nozzles, generating a force in the opposite direction of the brushing force, keeping the brushing module close to the underground continuous wall joint. The suspension motor is then activated to slowly move the brushing module upward along the underground continuous wall joint, performing a brushing operation. Once the brushing module reaches the surface, the brushing operation is complete.

[0013] The beneficial effects of the present invention are:

[0014] Compared with the existing wall brushing device, the volume of the device of the present invention is significantly reduced. By reserving a wall brushing bin in the steel cage, the wall brushing operation can be carried out after the steel cage is lowered, and the mud generated during the lowering of the steel cage and the pouring of concrete can be cleaned.

[0015] Compared with the existing wall brushing device, the wall brushing force of the present invention is not limited by the depth of the underground continuous wall, is stable and adjustable, and can significantly improve the wall brushing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the jet-balanced underground continuous wall joint brushing device of the present invention;

[0017] In the figure: 1: electronic gyroscope, 2: wall brush nozzle, 3: slurry separation tank, 4: high pressure pump, 5: slurry inlet hole, 6: shell, 7: balance nozzle, 8: solenoid valve, 9: slurry storage tank, 10: suspension ring, 11: rope buckle, 12: cable, 13: suspension frame, 14 suspension motor, 15: rope winder, 16: control cable, 17: electrical control box, 18: control computer. DETAILED DESCRIPTION

[0018] In order to enable those skilled in the art to better understand the technical solutions of the present invention, preferred embodiments of the present invention are described below in conjunction with specific examples:

[0019] like Figure 1As shown, the present invention presents a jet-balanced underground diaphragm wall joint cleaning device, which consists of a cleaning module, a suspension module, and a control module. The suspension module is connected to the cleaning module and is used to suspend the cleaning module, lowering it along the joint to the bottom of the trough section and moving it up and down along the diaphragm wall joint. The control module is connected to the cleaning module and the suspension module, and is used to control the cleaning module to move slowly from bottom to top along the underground diaphragm wall joint to perform the cleaning operation.

[0020] The wall brushing module consists of a shell 6, a slurry inlet 5, a high-pressure pump 4, a slurry storage tank 9, a slurry separation tank 3, an electromagnetic valve 8, a wall brushing nozzle 2 and a balancing nozzle 7. Among them, the slurry inlet 5, the wall brushing nozzle 2 and the balancing nozzle 7 all pass through the shell 6 and are tightly connected to the shell 6. The high-pressure pump 4, the slurry storage tank 9 and the slurry separation tank 3 are all fixed inside the shell 6 respectively; the slurry inlet 5 is located at the center of the lower end of the shell 6 and is connected to the high-pressure pump 4 located at the lower part of the shell 6; the slurry storage tank 9 is located in the middle and upper part of the shell 6 and is connected to the high-pressure pump 4, the slurry separation tank 3 and the balancing nozzle 7 respectively through pipelines. The electromagnetic valve 8 is provided in the connecting pipelines with the slurry separation tank 3 and the balancing nozzle 7; there are 5 wall brushing nozzles 2, which are located on the side of the shell 6 and arranged in parallel from top to bottom, together with the slurry separation tank 3 located on the side of the shell 6; there are 5 balancing nozzles 7, which are located on the other side opposite to the wall brushing nozzle 2 and are arranged in the form of 2 at the top, 1 in the middle and 2 at the bottom.

[0021] The suspension module consists of a suspension ring 10, a cable 12, a rope lock 11, a rope reel 15, a suspension motor 14, and a suspension frame 13. The suspension ring 10 is semicircular, with its end face connected to the housing 6. One end of the cable 12 passes through the suspension ring 10 and is tightened and secured to the cable body by the rope lock 11. The other end is connected to the rope reel 15, with a portion of the rope wrapped around the outside of the rope reel 15. The central axis of the rope reel 15 is connected to the output rod of the suspension motor 14, and rotates synchronously with the suspension motor 14. The suspension motor 14 is fixed to the upper end of the suspension frame 13.

[0022] The control module consists of an electronic gyroscope 1, an electrical control box 17, a control cable 16, and a control computer 18. The electronic gyroscope 1 is fixed inside the housing 6. The control cable 16 passes through the housing, with one end connected to the electrical control box 17 and the other end connected to the electronic gyroscope 1, the high-pressure pump 4, and each solenoid valve 8. The control computer 18 is connected to the electrical control box 17 and the suspension motor 14 via data cables.

[0023] Based on the above structure, an embodiment of the present invention provides a method for using a jet-balanced underground continuous wall joint brushing device:

[0024] During diaphragm wall construction, the present invention is installed near the ground near the diaphragm wall joint. A suspension module is used to lower the brushing module along the joint to the bottom of the trough. The control computer 18 is operated, and the electrical control box 17 activates the brushing module. The cement slurry in the concrete within the trough is drawn into the suspension module's reservoir 9 by the high-pressure pump 4. The control computer 18 adjusts the spraying conditions of the brushing nozzles 2 by controlling the solenoid valves 8 in the pipeline connecting the reservoir 9 to the distribution tank 3, generating a stable and effective brushing force. Simultaneously, the control computer 18 adjusts the spraying conditions of each balancing nozzle 7 based on the parameters of the electronic gyroscope 1 by controlling the solenoid valves 8 in the pipeline connecting the reservoir 9 to the balancing nozzle 7, generating a force in the opposite direction of the brushing force, keeping the brushing module close to the diaphragm wall joint. The suspension motor 14 is then activated, causing the brushing module to slowly move upward along the diaphragm wall joint, performing the brushing operation. Once the brushing module reaches the ground, the brushing operation is complete.

Claims

1. A jet-balanced underground continuous wall joint brushing device, characterized by: The brush wall module comprises a wall brushing module, a suspension module and a control module. The suspension module is connected to the wall brushing module and is used to suspend the wall brushing module, lower the wall brushing module along the joint to the bottom of the trough section, and move it up and down along the continuous wall joint. The control module is connected to the wall brushing module and the suspension module and is used to control the wall brushing module to move slowly from bottom to top along the underground continuous wall joint to perform a brushing operation. The wall brushing module comprises a shell, a slurry inlet, a high-pressure pump, a slurry storage tank, a slurry separation tank, an electromagnetic valve, a wall brushing nozzle and a balancing nozzle, wherein the slurry inlet, the wall brushing nozzle and the balancing nozzle all pass through the shell and are connected to the slurry inlet, the wall brushing nozzle and the balancing nozzle. The shell is tightly connected, and the high-pressure pump, slurry storage tank and slurry separation tank are respectively fixed inside the shell; the slurry inlet is located at the center of the lower end of the shell, and is connected to the high-pressure pump located in the lower part of the shell; the slurry storage tank is located in the middle and upper part of the shell, and is connected to the high-pressure pump, slurry separation tank and balancing nozzle through pipelines, and an electromagnetic valve is provided in the connecting pipeline with the slurry separation tank and the balancing nozzle; there are 5 wall brushing nozzles, which are located on the side of the shell, arranged in parallel from top to bottom, and connected to the slurry separation tank located on the side of the shell; there are 5 balancing nozzles, which are located on the other side opposite to the wall brushing nozzle.

2. The jet-balanced underground continuous wall joint brushing device according to claim 1 is characterized in that: The balancing nozzles are arranged in the form of 2 at the top, 1 in the middle and 2 at the bottom.

3. The jet-balanced underground continuous wall joint brushing device according to claim 1 is characterized in that: The suspension module includes a suspension ring, a cable, a rope buckle, a rope winder, a suspension motor and a suspension frame, wherein the suspension ring is a semicircular ring, and the end face is connected to the outer shell of the wall brushing module; one end of the cable is passed around the suspension ring and fixed to the rope body by the rope buckle, and the other end is connected to the rope winder, and part of the rope segment is wrapped around the outside of the rope winder; the central axis of the rope winder is connected to the output rod of the suspension motor and rotates synchronously with the suspension motor; the suspension motor is fixed to the upper end of the suspension frame.

4. The jet-balanced underground continuous wall joint brushing device according to claim 1 is characterized in that: The control module includes an electronic gyroscope, an electrical control box, a control cable and a control computer, wherein the electronic gyroscope is fixed inside the shell of the wall brush module; the control cable passes through the shell, one end is connected to the electrical control box, and the other end is connected to the electronic gyroscope, high-pressure pump and various solenoid valves; the control computer is connected to the electrical control box and suspension motor respectively through data cables.

5. A method for using the jet-balanced underground continuous wall joint brushing device according to any one of claims 1 to 4, characterized in that: During the construction of underground continuous wall, the wall brushing module is lowered to the bottom of the slot section along the joint using the suspension module; the control computer is operated to start the wall brushing module through the electrical control box, and the cement slurry in the concrete in the slot section is sucked into the slurry storage tank of the wall brushing module by the high-pressure pump. The control computer adjusts the spraying condition of the wall brushing nozzle by controlling the solenoid valve in the connecting pipe between the slurry storage tank and the slurry distribution tank to generate a stable and effective wall brushing force. At the same time, the control computer adjusts the spraying condition of each balancing nozzle by controlling the solenoid valve in the connecting pipe between the slurry storage tank and the balancing nozzle according to the parameters of the electronic gyroscope, generating a force in the opposite direction of the wall brushing force, so that the wall brushing module is always close to the underground continuous wall joint; then, the suspension motor is started to make the wall brushing module move slowly from bottom to top along the underground continuous wall joint to perform the brushing operation; after the wall brushing module rises to the ground, the wall brushing operation is completed.

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