Subway foundation pit trackless flood prevention water retaining device

Abstract

The utility model relates to a metro foundation pit trackless flood prevention water retaining device, which belongs to the technical field of civil defense water retaining and comprises a gate-type steel truss, a water retaining steel plate, a balance roller, a rubber sealing gasket and a motor. The device is fixed to the ground through the gate-type steel truss, and one side face of the gate-type steel truss can be anchored to the side wall of a foundation pit fence so that the whole device can be firmly fixed; a sawtooth steel chain is installed on one side face of the top of the water retaining steel plate and dragged through a motor, and stretching and retracting of the water retaining steel plate can be achieved. The rubber sealing gasket is located at the bottom of the water retaining steel plate, the bottom of the device can make close contact with the ground, and the good sealing effect is achieved. The device is simple in structure, flexible in design, good in leakproofness and convenient to install and use, the device is arranged at the entrance and exit of the subway foundation pit, flood prevention of the construction station in the foundation pit fence in the rainy season can be achieved, the engineering practicability is high, and safe construction of the subway foundation pit is guaranteed.

Description

Technical Field

[0001] The present invention belongs to the technical field of civil air defense and water retaining, and in particular relates to a trackless flood control and water retaining device for a subway foundation pit. Background Art

[0002] The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art.

[0003] With the rapid development of urban subway construction, the scale of subway station foundation pit construction is getting larger and larger, and the number of construction is increasing. Since subway foundation pits are mainly located at key urban road hubs, in order to reduce the impact of foundation pit construction on adjacent traffic and buildings (structures), a station fence structure needs to be built before foundation pit construction, and an entrance and exit should be set at a certain position of the fence structure to enable the entry and exit of machinery and personnel.

[0004] For urban subway construction with abundant precipitation, if heavy rainfall occurs during the rainy season, water on the roads will flow into the foundation pit through the reserved entrances and exits, causing damage to the surface production and living areas and causing property losses. On the other hand, rainwater will flow back into the foundation pit, affecting the normal excavation and support of the foundation pit. In severe cases, it will damage the internal support structure of the foundation pit and cause the foundation pit to collapse. What is more noteworthy is that the process of rainwater entering the foundation pit and flowing back into the foundation pit seriously threatens the lives of construction workers. Most of the existing flood control and water retaining devices are tracked lifting structures, and there is a problem of abnormal breakage of the traction rope causing the water retaining device to fall. Utility Model Content

[0005] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a trackless flood control and water retaining device for a subway foundation pit. Through a horizontally movable water retaining device, flood control of the construction site inside the foundation pit guardrail during the rainy season can be achieved. The project has strong practicality and is conducive to ensuring the safe construction of the subway foundation pit.

[0006] To achieve the above-mentioned objectives, one or more embodiments of the present disclosure provide a subway foundation pit trackless flood prevention and water retaining device, comprising a portal steel truss, a water retaining steel plate and a balancing roller; the portal steel truss is a rectangular frame structure, the four corners of the rectangular frame are steel frame support legs, buried below the ground, and the sides of the portal steel truss are anchored to the side walls of the foundation pit guardrail for firm fixation of the entire device; the water retaining steel plate passes through the interior of the rectangular frame; a balancing roller for controlling the deflection of the water retaining steel plate is provided on the upper part of the rectangular frame.

[0007] Furthermore, the water retaining steel plate is a rectangular flat plate structure, and a serrated steel chain is arranged on the top side of the water retaining steel plate. The serrated steel chain drives the water retaining steel plate to extend and retract by being pulled by a motor.

[0008] Furthermore, a rubber sealing pad is provided at the bottom of the water retaining steel plate, and is in close contact with the ground through the rubber sealing pad.

[0009] Furthermore, the balancing roller includes a horizontal roller and a vertical roller; the balancing roller is anchored to the steel frame at the top of the portal steel truss by bolts.

[0010] Furthermore, the horizontal roller is located on the top of the water retaining steel plate; and the vertical rollers are located on both sides of the water retaining steel plate.

[0011] Furthermore, the horizontal roller controls the vertical deflection of the extension and retraction of the water retaining steel plate.

[0012] Furthermore, the vertical roller controls the horizontal deflection of the extension and retraction of the water retaining steel plate.

[0013] Furthermore, the motor and the serrated steel chain are arranged on the same side of the water retaining steel plate.

[0014] Furthermore, the motor is interlocked with the serrated steel chain, and the serrated steel chain is rotated by the rotation of the motor.

[0015] Furthermore, the motor is arranged above the transformer box; the transformer box provides stable voltage and current for the motor.

[0016] The beneficial effects of one or more of the above technical solutions are:

[0017] The utility model has a sawtooth steel chain installed on one side of the top of the water retaining steel plate, which is pulled by a motor to realize the extension and retraction of the water retaining steel plate; the vertical deflection of the extension and retraction of the water retaining steel plate is controlled by a horizontal roller, and the horizontal deflection of the extension and retraction of the water retaining steel plate is controlled by a vertical roller. The utility model has a simple structure, flexible design, convenient installation and use, and can be reused. The automatic extension and retraction of the entire device is realized, and the controllability and operability are good; the rubber sealing pad is located at the bottom of the water retaining steel plate, so that the bottom of the device can be in close contact with the ground, and has a good sealing effect; the entrance and exit of the subway foundation pit are tightly closed, and the airtightness is good, which can effectively prevent the penetration of surface rainwater and ensure the safe construction of the subway foundation pit. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings in the specification, which constitute a part of the present application, are used to provide a further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute a limitation on the present application.

[0019] Figure 1 A front view of a flood prevention and water retaining device in one or more embodiments of the present disclosure;

[0020] Figure 2 It is a right view of the flood prevention and water retaining device in one or more embodiments of the present disclosure;

[0021] In the figure, 1. portal steel truss; 2. water-retaining steel plate; 3. serrated steel chain; 4. rubber sealing pad; 5. horizontal roller; 6. vertical roller; 7. motor; 8. transformer box. DETAILED DESCRIPTION

[0022] As introduced in the background technology, the existing track flood prevention and water retaining devices are mostly lifting structures, and there is a problem that the water retaining device falls due to abnormal breakage of the traction rope.

[0023] In order to solve the above technical problems, the utility model realizes flood prevention of the construction site inside the foundation pit guardrail in the rainy season through a horizontally movable water retaining device. The project has strong practicality and is conducive to ensuring the safe construction of the subway foundation pit.

[0024] like Figure 1-Figure 2 As shown, one embodiment of the utility model records a trackless flood prevention and water retaining device for a subway foundation pit, including a portal steel truss 1, a water retaining steel plate 2, a balancing roller, a rubber sealing pad 4 and a motor 7.

[0025] like Figure 1 As shown, the portal steel truss 1 is a rectangular frame structure, and the four corners of the rectangular frame are steel frame support legs, which are buried below the ground. The side of the portal steel truss 1 is anchored to the side wall of the foundation pit guardrail to firmly fix the entire device;

[0026] A serrated steel chain 3 is installed on the top side of the water-retaining steel plate 2. The serrated steel chain 3 can extend and retract the water-retaining steel plate 2 through the traction of the motor 7. A rubber sealing pad 4 is also provided at the bottom of the water-retaining steel plate 2 to achieve close contact between the bottom of the device and the ground, thereby improving the waterproof sealing effect.

[0027] Specifically, the rubber sealing pad 4 is made of rubber material and has a certain elasticity. The rubber sealing pad 4 is fixed to the bottom of the water-retaining steel plate 2. When the water-retaining steel plate 2 is stretched, the rubber sealing pad 4 can be in close contact with the ground, achieving a good sealing effect and effectively preventing water from seeping in.

[0028] Specifically, the water retaining steel plate 2 is a rectangular flat plate structure, and the water retaining steel plate 2 passes through the rectangular frame of the portal steel truss 1. The upper part of the rectangular frame is provided with a balancing roller for controlling the deflection of the water retaining steel plate.

[0029] like Figure 2 As shown, a serrated steel chain 3 is installed on the side of the top of the water retaining steel plate 2. The serrated steel chain 3 is pulled by a motor 7 to extend and retract the water retaining steel plate 2, thereby closing and opening the entrance and exit of the foundation pit.

[0030] Specifically, the motor 7 is the power source of the flood control and water retaining device. The head of the motor 7 is interlocked with the serrated steel chain 3 on the side of the water retaining steel plate 2. Specifically, the output shaft of the motor 7 is connected with a sprocket, which is connected to the serrated steel chain 3 through the sprocket. The rotation of the transmission shaft of the motor 7 is used to pull the serrated steel chain 3 to move, thereby realizing the extension and retraction of the water retaining steel plate 2 and the closing and opening of the foundation pit entrance and exit; the motor 7 is placed above the transformer box 8, and the transformer box 8 is used to provide stable voltage and current.

[0031] like Figure 2 As shown, the balancing roller includes a horizontal roller 5 and a vertical roller 6; the balancing roller is arranged on the steel frame at the top of the portal steel truss by bolt anchoring.

[0032] Specifically, the balancing roller includes two horizontal rollers 5 and four vertical rollers 6. The horizontal roller 5 is located at the top of the water retaining steel plate 2 and is used to control the vertical deflection of the extension and retraction of the water retaining steel plate 2. The vertical rollers 6 are located on the two side surfaces of the top of the water retaining steel plate 2 and are used to control the horizontal deflection of the extension and retraction of the water retaining steel plate 2.

[0033] How it works

[0034] When in use, the motor 7 is used to start the traction serrated steel chain 3 to move, so that the water retaining steel plate 2 moves along the inside of the portal steel truss rectangular frame structure, and the movement of the water retaining steel plate 2 is biased and restricted by the balancing roller. The rubber sealing pad 4 located at the bottom of the water retaining steel plate 2 is used to achieve close contact between the bottom of the device and the ground, thereby blocking the water flow outside the water retaining steel plate 2, realizing flood prevention for the construction site inside the foundation pit guardrail during the rainy season, and playing a role in water retaining and flood prevention.

[0035] Although the above describes the specific implementation methods of the present disclosure in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present disclosure. Technical personnel in the relevant field should understand that on the basis of the technical solution of the present disclosure, various modifications or variations that can be made by those skilled in the art without creative work are still within the scope of protection of the present disclosure.

Claims

1. A trackless flood prevention and water retaining device for a subway foundation pit, characterized in that: It includes a portal steel truss, a water-retaining steel plate and a balancing roller; the portal steel truss is a rectangular frame structure, the four corners of the rectangular frame are steel frame support legs, buried below the ground, and the sides of the portal steel truss are anchored to the side walls of the foundation pit guardrail to firmly fix the entire device; the water-retaining steel plate passes through the inside of the rectangular frame; a balancing roller for controlling the deflection of the water-retaining steel plate is arranged on the upper part of the rectangular frame.

2. A trackless flood prevention and water retaining device for subway foundation pit according to claim 1, characterized in that: The water retaining steel plate is a rectangular flat plate structure. A serrated steel chain is arranged on the top side of the water retaining steel plate. The serrated steel chain drives the water retaining steel plate to extend and retract by the traction of a motor.

3. The trackless flood prevention and water retaining device for subway foundation pit according to claim 1 is characterized in that: A rubber sealing pad is arranged at the bottom of the water retaining steel plate, and the water retaining steel plate is in close contact with the ground through the rubber sealing pad.

4. A trackless flood prevention and water retaining device for subway foundation pit according to claim 1, characterized in that: The balancing roller comprises a horizontal roller and a vertical roller; the balancing roller is anchored on the steel frame at the top of the portal steel truss by bolts.

5. A trackless flood prevention and water retaining device for subway foundation pit according to claim 4, characterized in that: The horizontal roller is located on the top of the water retaining steel plate; the vertical rollers are located on both sides of the water retaining steel plate.

6. A trackless flood prevention and water retaining device for subway foundation pit according to claim 4, characterized in that: The horizontal roller controls the vertical deflection of the extension and retraction of the water retaining steel plate.

7. The trackless flood prevention and water retaining device for subway foundation pit according to claim 4, characterized in that: The vertical roller controls the horizontal deflection of the extension and retraction of the water retaining steel plate.

8. The trackless flood prevention and water retaining device for subway foundation pit according to claim 2, characterized in that: The motor and the sawtooth steel chain are arranged on the same side of the water retaining steel plate.

9. A trackless flood prevention and water retaining device for subway foundation pit according to claim 8, characterized in that: The motor is buckled with the sawtooth steel chain, and the sawtooth steel chain is rotated by the rotation of the motor.

10. A trackless flood prevention and water retaining device for subway foundation pit according to claim 9, characterized in that: The motor is arranged above the transformer box; the transformer box provides stable voltage and current for the motor.

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