Rapid supporting device for urban tunnel open cut foundation pit

Abstract

The utility model discloses a city tunnel open cut foundation pit rapid supporting device, which relates to the technical field of municipal construction, and comprises a supporting plate, the lower end of the supporting plate is fixedly connected with a drainage channel, the side end of the drainage channel is fixedly connected with a bottom plate, a monitoring rod is arranged between the supporting plate and the bottom plate, and the monitoring rod comprises an upper section rod and a lower section rod. An inserting rod is fixedly connected to the lower end of the upper-section rod, a transmission head is arranged at the lower end of the inserting rod, an alarm is arranged at the side end of the upper-section rod, the monitoring rod comprises a lower-section rod, and a battery block is fixedly connected into the lower-section rod. According to the urban tunnel open cut foundation pit supporting device, the monitoring rod is arranged between the supporting plate and the bottom plate, when the supporting plate is bent due to too large pressure, the alarm in the monitoring rod gives an alarm so as to remind a worker to conduct reinforcement and maintenance, and the problem that when the supporting plate of an existing urban tunnel open cut foundation pit supporting device is bent and deformed, reminding and warning cannot be conducted is solved. Therefore, the support plate can be collapsed, and serious construction accidents can be caused.

Description

Technical Field

[0001] The utility model relates to the technical field of municipal construction, in particular to a rapid supporting device for an open excavation foundation pit of an urban tunnel. Background Art

[0002] The open-cut method for urban tunnels is a commonly used underground engineering construction method in urban construction. This method first excavates the tunnel foundation pit or trench from the surface until the designed elevation is reached. In the open-cut construction of urban tunnels, support is a very important link. Its main purpose is to ensure the stability of the foundation pit, prevent earth collapse, and ensure the safe progress of construction.

[0003] However, the existing urban tunnel open excavation foundation pit support device does not have the function of detecting whether the support plate is deformed. Therefore, when the support plate is pushed and bent, it is impossible to remind the staff, so that the staff cannot be informed in time and cannot reinforce and maintain it in the first time, which may cause the support plate to collapse and cause serious construction accidents.

[0004] To this end, we provide a rapid support device for open excavation pits in urban tunnels to solve the above problems. Utility Model Content

[0005] 1) Technical issues solved

[0006] The purpose of the utility model is to make up for the deficiencies of the prior art and to provide a rapid supporting device for an open excavation foundation pit of an urban tunnel.

[0007] 2) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a support plate of a rapid support device for an open excavation pit in an urban tunnel, comprising a support plate, a drainage channel is fixedly connected to the lower end of the support plate, a bottom plate is fixedly connected to the side end of the drainage channel, a monitoring rod is arranged between the support plate and the bottom plate, the monitoring rod comprises an upper rod, a plug rod is fixedly connected to the lower end of the upper rod, a transmission head is arranged at the lower end of the plug rod, an alarm is arranged at the side end of the upper rod, the monitoring rod comprises a lower rod, a battery block is fixedly connected inside the lower rod, a connecting head is arranged inside the lower rod, and a spring is fixedly connected between the upper rod and the lower rod.

[0009] Furthermore, the monitoring rod is obliquely supported on the support plate and the bottom plate, the insertion rod is inserted into the lower section rod, a wire is arranged in the upper section rod, and the transmission head and the alarm are connected through the wire in the upper section rod.

[0010] Furthermore, the battery block is connected to the connection head via a wire, the transmission head can be connected to the connection head, but in a normal state the transmission head is not connected to the connection head, and the insertion rod is located in the spring.

[0011] Furthermore, water holes are provided in the support plate and the drainage channel, a mounting groove is provided on the upper end of the support plate, a water pipe is provided on the mounting groove, a spray head is provided on the side end of the water pipe, and a connecting pipe is provided on the side end of the water pipe.

[0012] Furthermore, a connection groove is provided on one side of the support plate, and a connection plate is fixedly connected to the other side, and the size of the connection plate can be inserted into the connection groove.

[0013] Furthermore, mounting holes are provided in the support plate and the base plate, a support frame is provided between the support plate and the base plate, pads are provided at the bottom foot and side end of the support frame, threaded holes are provided in the pads, and the threaded holes are provided corresponding to the mounting holes.

[0014] Furthermore, the side ends of the support plate and the upper ends of the base plate are fixedly connected with clamping blocks, the monitoring rod is clamped in the clamping blocks, and the upper ends of the base plate are fixedly connected with fixing blocks, and the fixing blocks are located at the side ends of the base feet of the support frame.

[0015] III) Beneficial effects

[0016] Compared with the existing technology, the urban tunnel open excavation foundation pit rapid support device has the following beneficial effects:

[0017] 1. The utility model provides a monitoring rod between the support plate and the bottom plate. When the support plate is bent due to excessive pressure, the alarm in the monitoring rod will sound an alarm to remind the staff to carry out reinforcement maintenance. Specifically, when the support plate is bent under pressure, it will squeeze the upper rod to move the insertion rod into the lower rod, so that the transmission head is connected to the connecting head, so that the battery block will provide power to the alarm through the connecting head, the transmission head, and the wires in the upper rod, so that the alarm will sound an alarm, which solves the problem of existing open-cut foundation pit support devices in urban tunnels. When the support plate is bent and deformed, it is impossible to give a warning, which may cause the support plate to collapse, resulting in serious construction accidents.

[0018] Second, the utility model is provided with a drainage channel, which can not only drain rainwater quickly, but also drain the moisture in the soil around the foundation pit into the drainage channel through the water holes, so as to reduce the moisture content of the soil around the foundation pit and make it difficult to lose and loosen.

[0019] 3. The utility model is provided with a water pipe on the supporting plate, and water can be sprayed to the construction area in the foundation pit through the spray head to reduce dust, thereby reducing the pollution of the surrounding environment by the dust generated during construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of the utility model device;

[0021] Figure 2 This is a schematic diagram of the splicing combination of multiple devices of the utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the support plate of the utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the upper and lower sections of the utility model;

[0024] Figure 5 This is a schematic diagram of the positions of the transmission head and the connection head of the utility model.

[0025] In the figure: 1. Support plate; 2. Drainage channel; 3. Bottom plate; 4. Monitoring pole; 5. Upper pole; 6. Insertion pole; 7. Transmission head; 8. Alarm; 9. Lower pole; 10. Battery block; 11. Connector; 12. Spring; 13. Water hole; 14. Mounting groove; 15. Water pipe; 16. Spray head; 17. Connecting groove; 18. Connecting plate; 19. Mounting hole; 20. Support frame; 21. Pad; 22. Block; 23. Fixing block. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] like Figure 1-Figure 5 As shown, the utility model provides a technical solution: a rapid support device for an open excavation pit of an urban tunnel, comprising a support plate 1, a drainage channel 2 is fixedly connected to the lower end of the support plate 1, the drainage channel 2 is used to collect water in the foundation pit for convenient and rapid drainage, and water holes 13 are provided in both the support plate 1 and the drainage channel 2, the water holes 13 are used to allow the water in the soil at the side end of the support plate 1 to be discharged into the drainage channel 2, thereby preventing the soil from being lost and loosened due to excessive moisture.

[0028] The side end of the drainage channel 2 is fixedly connected to the base plate 3, and mounting holes 19 are provided in the support plate 1 and the base plate 3. A support frame 20 is provided between the support plate 1 and the base plate 3, and the support frame 20 is used to support and fix the support plate 1. The base and side ends of the support frame 20 are provided with pads 21, and the pads 21 are used to increase the effective area of ​​the support frame 20 to reduce the pressure, thereby avoiding damage to the support plate 1 and the base plate 3. A threaded hole is provided in the pad 21, and the threaded hole corresponds to the mounting hole 19. A fixing block 23 is fixedly connected to the upper end of the base plate 3, and the fixing block 23 is located at the side end of the base of the support frame 20. Therefore, when the support frame 20 is subjected to the force of the support plate 1, the fixing block 23 will provide a reaction force for the support frame 20.

[0029] A monitoring rod 4 is arranged between the supporting plate 1 and the bottom plate 3. The monitoring rod 4 does not provide a supporting effect, and is only used to detect whether the supporting plate 1 is bent or deformed. The side end of the supporting plate 1 and the upper end of the bottom plate 3 are fixedly connected with a clamping block 22, and the monitoring rod 4 is clamped in the clamping block 22, so that the monitoring rod 4 can be installed, and after the project is completed, the monitoring rod 4 can be conveniently recovered. The monitoring rod 4 includes an upper section rod 5, in which a wire is arranged, and the lower end of the upper section rod 5 is fixedly connected with a plug rod 6, and the lower end of the plug rod 6 is provided with a transmission head 7. The monitoring rod 4 includes a lower section rod 9, and the plug rod 6 is inserted in the lower section rod 9. The upper section rod 5 A spring 12 is fixedly connected to the lower rod 9, and the insertion rod 6 is located in the spring 12. A battery block 10 is fixedly connected to the lower rod 9. A connector 11 is provided in the lower rod 9. The battery block 10 is connected to the connector 11 through a wire. The transmission head 7 can be connected to the connector 11, but under normal conditions, the transmission head 7 is not connected to the connector 11. An alarm 8 is provided at the side end of the upper rod 5. The transmission head 7 is connected to the alarm 8 through a wire in the upper rod 5. At this time, when the transmission head 7 is connected to the connector 11, the battery block 10 will be able to provide power to the alarm 8, thereby causing it to sound an alarm.

[0030] A connecting groove 17 is provided on one side of the support plate 1, and a connecting plate 18 is fixedly connected to the other side. The size of the connecting plate 18 can be inserted into the connecting groove 17, so that multiple support plates 1 can be conveniently connected together. An installation groove 14 is provided on the upper end of the support plate 1, and a water pipe 15 is provided on the installation groove 14. A spray head 16 is provided on the side end of the water pipe 15, and a connecting pipe is provided on the side end of the water pipe 15.

[0031] Working principle: After the support plate 1 and the support frame 20 are installed, the water pipe 15 can be installed on the upper end of the support plate 1 through the installation groove 14, so as to inject water into the water pipe 15, and the spray head 16 will spray water to the construction area in the foundation pit to reduce dust, so as to reduce the dust generated by the construction;

[0032] The monitoring rod 4 is installed between the support plate 1 and the bottom plate 3 through the clamping block 22. When the support plate 1 is bent due to excessive soil pressure at the side end, it will push the upper rod 5 to move, and the spring 12 will shrink under the force, so as to move the insertion rod 6 to the lower rod 9. When the transmission head 7 at the lower end of the insertion rod 6 is connected with the connecting head 11 in the lower rod 9 (indicating that the support plate 1 has been compressed and bent to produce a large deformation), the battery block 10 will provide power to the alarm 8 through the connecting head 11, the transmission head 7, and the wires in the upper rod 5, so that the alarm 8 will sound an alarm to remind the staff to reinforce and maintain the support plate 1 in time.

Claims

1. A rapid support device for an open excavation pit of an urban tunnel, comprising a support plate (1), characterized in that: The lower end of the support plate (1) is fixedly connected to a drainage channel (2), and the side end of the drainage channel (2) is fixedly connected to a bottom plate (3). A monitoring rod (4) is arranged between the support plate (1) and the bottom plate (3). The monitoring rod (4) comprises an upper rod (5), the lower end of the upper rod (5) is fixedly connected to an insertion rod (6), the lower end of the insertion rod (6) is provided with a transmission head (7), and the side end of the upper rod (5) is provided with an alarm (8). The monitoring rod (4) comprises a lower rod (9), a battery block (10) is fixedly connected inside the lower rod (9), a connecting head (11) is provided inside the lower rod (9), and a spring (12) is fixedly connected between the upper rod (5) and the lower rod (9).

2. The rapid support device for open excavation of urban tunnel according to claim 1 is characterized by: The monitoring rod (4) is obliquely supported on the supporting plate (1) and the bottom plate (3), the insertion rod (6) is inserted into the lower section rod (9), a wire is arranged in the upper section rod (5), and the transmission head (7) and the alarm (8) are connected via the wire in the upper section rod (5).

3. The rapid support device for open excavation of urban tunnel according to claim 1 is characterized by: The battery block (10) is connected to the connection head (11) via a wire, the transmission head (7) can be connected to the connection head (11), but in a normal state the transmission head (7) is not connected to the connection head (11), and the insertion rod (6) is located in the spring (12).

4. The rapid support device for open excavation of urban tunnel according to claim 1 is characterized by: The support plate (1) and the drainage channel (2) are both provided with water holes (13); the upper end of the support plate (1) is provided with a mounting groove (14); a water pipe (15) is provided on the mounting groove (14); a spray head (16) is provided at the side end of the water pipe (15); and a connecting pipe is provided at the side end of the water pipe (15).

5. The rapid support device for open excavation of urban tunnel according to claim 1 is characterized by: A connection groove (17) is provided on one side of the support plate (1), and a connection plate (18) is fixedly connected to the other side. The connection plate (18) is of a size that can be inserted into the connection groove (17).

6. The rapid support device for open excavation of urban tunnel according to claim 1 is characterized by: The support plate (1) and the bottom plate (3) are both provided with mounting holes (19), a support frame (20) is provided between the support plate (1) and the bottom plate (3), a pad (21) is provided at the bottom foot and the side end of the support frame (20), a threaded hole is provided in the pad (21), and the threaded hole is provided corresponding to the mounting hole (19).

7. The rapid support device for open excavation of urban tunnel according to claim 6, characterized in that: The side ends of the support plate (1) and the upper end of the bottom plate (3) are both fixedly connected with a clamping block (22), the monitoring rod (4) is clamped in the clamping block (22), the upper end of the bottom plate (3) is fixedly connected with a fixing block (23), and the fixing block (23) is located at the side end of the foot of the support frame (20).

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