Large-diameter shield box culvert operation platform

Abstract

The utility model relates to a large-diameter shield box culvert operation platform which comprises an integral box culvert and a duct piece laid at the bottom, the bottom of the integral box culvert is attached to the duct piece, the top face of the integral box culvert is horizontal, a guardrail is arranged at the end of the top face of the integral box culvert, a stair transfer table is arranged at one end of the guardrail, and the stair transfer table is connected with the integral box culvert. The integral box culvert is provided with a stair transfer table, the stair transfer table is flush with the top surface of the integral box culvert, a stair is hinged to the stair transfer table, the lower end of the stair is in lap joint with the duct piece, and a telescopic mechanism is connected between the stair transfer table and the stair; guide rail supports are fixedly arranged at the two ends of the duct piece, guide rails are installed on the guide rail supports, sliding blocks are fixedly installed at the two ends of the guardrail, the sliding blocks are connected with the guide rails, pushing mechanisms are installed between the guardrail and the guide rail supports, and the pushing mechanisms are used for pushing the guardrail to move along the guide rails.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction, in particular to a large-diameter shield culvert operation platform. Background Art

[0002] During large-diameter shield construction, after the tunnel is excavated by the shield machine, it is necessary to first lay segments on the inner wall of the tunnel. The segments play a supporting role. After the segments are assembled, an integral culvert needs to be assembled. Before the culvert is assembled, it is necessary to manually clean the sundries on the segments. Since the height of the culvert is about 3 - 4m, it is necessary to install up and down stairs. And since the culvert is continuously extended along the tunnel direction during the assembly process, the position of its end is constantly changing along the tunnel direction. After the guardrail is installed at the end of the culvert, it needs to be removed after the next culvert is assembled, and then the guardrail is reinstalled at the end of the newly spliced culvert. Therefore, the workload of guardrail construction is large and the work efficiency is low.

[0003] Therefore, a large-diameter shield culvert operation platform is needed to solve the above technical problems. Summary of the Utility Model

[0004] The utility model aims at the technical problems existing in the prior art and provides a large-diameter shield culvert operation platform.

[0005] The technical solution for the utility model to solve the above technical problems is as follows: A large-diameter shield culvert operation platform includes an integral culvert and segments laid at the bottom. The bottom of the integral culvert is in contact with the segments. The top surface of the integral culvert is horizontal. A guardrail is provided at the end of the top surface of the integral culvert. One end of the guardrail is provided with a stair transfer platform, which is flush with the top surface of the integral culvert. A stair is hinged on the stair transfer platform, and the lower end of the stair is lapped on the segments. A telescopic mechanism is connected between the stair transfer platform and the stair; Guide rail brackets are fixedly provided at both ends of the segments, guide rails are installed on the guide rail brackets, sliders are fixedly installed at both ends of the guardrail, and the sliders are connected with the guide rails. A pushing mechanism is installed between the guardrail and the guide rail bracket, and the pushing mechanism is used to push the guardrail to move along the guide rail.

[0006] Preferably, in the above large-diameter shield culvert operation platform, one end of the telescopic mechanism is hinged to the bottom of the stair transfer platform, and the other end of the telescopic mechanism is hinged to the bottom of the stair.

[0007] Preferably, in the above large-diameter shield culvert operation platform, the telescopic mechanism is an electric telescopic rod or a hydraulic telescopic rod.

[0008] Preferably, for the above-mentioned large-diameter shield culvert operation platform, the pushing mechanism includes two baffles and two hydraulic cylinders. Hydraulic cylinder fixing brackets are fixed at both ends of the guardrail. The two hydraulic cylinders are respectively fixed on the hydraulic cylinder fixing brackets. The two baffles are respectively located on two guide rail brackets. When the output end of the hydraulic cylinder applies a thrust to the baffle, the guardrail moves along the guide rail.

[0009] Preferably, for the above-mentioned large-diameter shield culvert operation platform, a plurality of rectangular slots are equidistantly arranged on the guide rail bracket. The rectangular slots are adapted to insert the baffle, and the baffle is detachably connected to the rectangular slots.

[0010] Preferably, for the above-mentioned large-diameter shield culvert operation platform, the baffle includes a baffle body and a limiting plate. The baffle body is adapted to penetrate and insert into the rectangular slot, and the thickness of the baffle body is the same as the width of the rectangular slot. The limiting plates are fixed on both sides of the upper part of the baffle body. The baffle body is perpendicular to the limiting plate, and the limiting plate contacts the upper end surface of the rectangular slot.

[0011] Preferably, for the above-mentioned large-diameter shield culvert operation platform, the baffle is made of steel plate.

[0012] Preferably, for the above-mentioned large-diameter shield culvert operation platform, both of the two hydraulic cylinders are connected with hydraulic branch pipes. The other ends of the two hydraulic branch pipes are connected with a hydraulic main pipeline, and the other end of the hydraulic main pipeline is connected with a hydraulic pump.

[0013] Preferably, for the above-mentioned large-diameter shield culvert operation platform, the pushing mechanism includes a rail clamping cylinder. The rail clamping cylinder includes a rail clamp. An oil cylinder is fixed on the rail clamp. The rail clamp clamps on the guide rail, and the output end of the oil cylinder abuts against the guardrail.

[0014] Preferably, for the above-mentioned large-diameter shield culvert operation platform, a high-pressure cleaning water gun is installed on the guardrail.

[0015] The beneficial effects of the present utility model are as follows: By arranging a movable guardrail at the top end of the integral culvert, while ensuring construction safety, the inconvenience of repeatedly installing and disassembling the traditional guardrail is overcome. A high-pressure cleaning water gun is installed on the guardrail, which is convenient for cleaning the construction site. By arranging a telescopic mechanism, it is convenient to retract and lower the stairs. The overall construction efficiency is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a top view of the present utility model;

[0017] Figure 2 is a front view of the present utility model;

[0018] Figure 3 For Figure 2 The structural schematic diagram after the middle staircase rises;

[0019] Figure 4 For Figure 2 The partial enlarged view at position A in ;

[0020] Figure 5 For Figure 1 The partial enlarged view at position B in ;

[0021] Figure 6 For the schematic diagram of the oil circuit interconnection principle of two hydraulic cylinders;

[0022] Figure 7 For the structural schematic diagram of the connection between the rail clamping cylinder and the guide rail.

[0023] In the attached drawings, the list of components represented by each label is as follows:

[0024] 1. Segment, 2. Integral culvert box, 3. Guardrail, 4. Staircase, 5. Guide rail bracket, 6. Slide block, 7. Hydraulic cylinder fixing bracket, 8. Hydraulic cylinder, 9. Baffle, 91. Baffle body, 92. Limiting plate, 10. Hydraulic branch pipe, 11. Hydraulic main pipeline, 12. Telescopic mechanism, 13. Staircase transfer platform, 14. Rectangular slot, 15. Guide rail, 16. Rail clamping cylinder. Specific implementation mode

[0025] The principles and features of the present invention will be described below with reference to the attached drawings. The examples given are only used to explain the present invention and are not intended to limit the scope of the present invention.

[0026] As Figures 1 to 6 shown, a large-diameter shield culvert operation platform includes an integral culvert box 2 and segments 1 laid at the bottom. Since the cross-section of the tunnel is circular, the segments 1 are first laid at the bottom, and then the integral culvert box 2 is laid on the segments 1. The bottom of the integral culvert box 2 is arc-shaped and fits the segments 1. The top surface of the integral culvert box 2 is horizontal, and a guardrail 3 is provided at the end of the top surface of the integral culvert box 2. A high-pressure cleaning water gun is installed on the guardrail 3 to facilitate cleaning the construction site.

[0027] One end of the guardrail 3 is provided with a stair transfer platform 13. The stair transfer platform 13 is flush with the top surface of the integral culvert 2. A stair 4 is hinged on the stair transfer platform 13. The lower end of the stair 4 overlaps on the segment 1. Construction workers can move back and forth from the segment 1 to the top surface of the integral culvert 2 through the stair 4. A telescopic mechanism 12 is connected between the stair transfer platform 13 and the stair 4. The telescopic mechanism 12 is an electric telescopic rod or a hydraulic telescopic rod. One end of the telescopic mechanism 12 is hinged to the bottom of the stair transfer platform 13, and the other end of the telescopic mechanism 12 is hinged to the bottom of the stair 4. When the telescopic mechanism 12 extends, it pushes the stair 4 to rotate around the hinge point, thus pushing the stair to the horizontal for easy storage. When it is necessary to use the stair 4 to go up and down, the telescopic mechanism 12 retracts, so that the stair 4 drops, and its lower end drops onto the laid segment 1.

[0028] Guide rail brackets 5 are fixedly arranged at both ends of the segment 1. Guide rails 15 are installed on the guide rail brackets 5. The two guide rails 15 are parallel to each other. Sliders 6 are fixedly installed at both ends of the guardrail 3. The sliders 6 are slidably connected to the guide rails 15. A pushing mechanism is installed between the guardrail 3 and the guide rail bracket 5. The pushing mechanism is used to push the guardrail 3 to move along the guide rail 15. Specifically, the pushing mechanism includes two baffles 9 and two hydraulic cylinders 8. Hydraulic cylinder fixing frames 7 are fixed at both ends of the guardrail 3. The two hydraulic cylinders 8 are respectively fixed on the hydraulic cylinder fixing frames 7. The hydraulic cylinders 8 are located below the guide rail brackets 5, and the telescopic shafts of the hydraulic cylinders 8 are oriented in the same direction as the guide rail brackets 5. A plurality of rectangular slots 14 are equidistantly arranged on the guide rail brackets 5. The rectangular slots 14 are used to insert the baffles 9, and the baffles 9 are detachably connected to the rectangular slots 14.

[0029] The baffle 9 includes a baffle body 91 and a limiting plate 92. The baffle body 91 is used to penetrate and insert into the rectangular slot 14, and the thickness of the baffle body 91 is the same as the width of the rectangular slot 14. The depth of the rectangular slot 14 is greater than 5 cm. The baffle 9 is made of steel plate material to ensure that the baffle 9 can withstand the large thrust of the hydraulic cylinder 8 and will not shake stably. The limiting plates 92 are fixed on both sides of the upper part of the baffle body 91. The baffle body 91 is perpendicular to the limiting plates 92. After the baffle body 91 is inserted into the rectangular slot 14, the limiting plates 92 are in contact with the upper end surface of the rectangular slot 14. The limiting plates 92 are used to hang and insert the limiting plates 92 into the rectangular slot 14 without falling. When it is necessary to move the guardrail 3, retract the telescopic shaft of the hydraulic cylinder 8, insert the baffle 9 into a rectangular slot 14 adjacent to the hydraulic cylinder 8, and extend the telescopic shaft of the hydraulic cylinder 8. When the telescopic shaft of the hydraulic cylinder 8 contacts the baffle 9, the guardrail 3 will be pushed to move along the guide rail 15 during the continuous extension of the telescopic shaft of the hydraulic cylinder 8. When it is still necessary to move the guardrail 3 in this direction after the telescopic stroke of the hydraulic cylinder 8 reaches the limit, retract the telescopic shaft of the hydraulic cylinder 8, and then insert the baffle 9 into a rectangular slot 14 adjacent to the hydraulic cylinder 8. In this way, the continuous movement of the guardrail 3 can be realized until the specified position is reached.

[0030] It should be noted that the stairs 4 must be retracted upward before the guardrail 3 moves. After the guardrail 3 moves to the target position, the stairs 4 are lowered. A rubber pad can be installed at the lower end of the stairs 4. On the one hand, it can prevent bumps, and on the other hand, it can increase the friction with the segment 1. Combined with the friction between the slider and the guide rail, the guardrail can be kept stationary at this position without being pushed by a large external force.

[0031] Both of the two hydraulic cylinders 8 are connected with hydraulic branch pipes 10. The other ends of the two hydraulic branch pipes 10 are connected with a hydraulic main pipeline 11, and the other end of the hydraulic main pipeline 11 is connected with a hydraulic pump. Since the oil circuits between the two hydraulic cylinders 8 are interconnected and the pressure of the oil in the hydraulic branch pipes 10 is the same, the oil pressure in the two hydraulic cylinders 8 is also the same. And because the specifications and dimensions of the two hydraulic cylinders 8 are the same, when the two hydraulic cylinders 8 work, the forces on both sides can be ensured to be balanced.

[0032] As another embodiment of the pushing mechanism of the present utility model, as Figure 7 shown, the pushing mechanism includes a rail clamping cylinder 16. The rail clamping cylinder 16 includes a rail clamp, and an oil cylinder is fixed on the rail clamp. When the rail clamping cylinder 16 pushes the guardrail 13, the rail clamp clamps on the guide rail 15, and the output end of the oil cylinder abuts against the guardrail 3. A groove is formed in the middle of the rail clamp, and hydraulic claws are arranged on both sides of the groove. The guide rail 15 is clamped in the groove. The hydraulic claws can be opened and closed. When the hydraulic claws are opened, the guide rail 15 is movably connected with the rail clamping cylinder 16. When the hydraulic claws are closed, the guide rail 15 is clamped, so that the guide rail 15 is fixedly connected with the rail clamping cylinder 16. The output end of the oil cylinder is parallel to the guide rail 15 and faces the guardrail 13. When it is necessary to move the guardrail 13, the rail clamping cylinder 16 is moved near the guardrail 13, the rail clamp clamps the guide rail 15, and the output end of the oil cylinder extends out and abuts against the guardrail 13, so as to realize the pushing of the guardrail 13. When the stroke of the oil cylinder reaches the limit, the rail clamp claws are opened, so as to be disengaged from the fixed relationship with the guide rail 15. The output end of the oil cylinder retracts, and the rail clamp is moved closer to the guardrail 13, and then the guide rail 15 is clamped again. By operating in this cycle, the guardrail 13 can be moved to the specified target.

[0033] In the description of the present utility model, it should be understood that the terms "upper", "lower", "left", "right", etc. indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings. They are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, as well as a specific orientation structure and operation. Therefore, it cannot be understood as a limitation to the present utility model. In addition, "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Therefore, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0034] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "connected" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0035] The above has described in detail an embodiment of the present utility model, but the content described is only the preferred embodiment of the present utility model and cannot be considered as used to limit the scope of implementation of the present utility model. All equivalent changes and improvements made according to the scope of the application of the present utility model should still fall within the scope covered by the patent of the present utility model.

Claims

1. A large-diameter shield box culvert operation platform, comprising an integral box culvert (2) and a pipe segment (1) laid at the bottom, wherein the bottom of the integral box culvert (2) is in contact with the pipe segment (1), and the top surface of the integral box culvert (2) is horizontal, characterized in that: A guardrail (3) is provided at the top end of the integral box culvert (2), and a staircase transfer platform (13) is provided at one end of the guardrail (3). The staircase transfer platform (13) is flush with the top surface of the integral box culvert (2), and a staircase (4) is hinged on the staircase transfer platform (13). The lower end of the staircase (4) is overlapped on the pipe segment (1), and a telescopic mechanism (12) is connected between the staircase transfer platform (13) and the staircase (4); guide rail brackets (5) are fixedly provided at both ends of the pipe segment (1), and a guide rail (15) is installed on the guide rail bracket (5). Slide blocks (6) are fixedly provided at both ends of the guardrail (3), and the slide blocks (6) are connected to the guide rail (15). A pushing mechanism is installed between the guardrail (3) and the guide rail bracket (5), and the pushing mechanism is used to push the guardrail (3) to move along the guide rail (15).

2. The large-diameter shield box culvert operation platform according to claim 1 is characterized by: One end of the telescopic mechanism (12) is hinged to the bottom of the stair transfer platform (13), and the other end of the telescopic mechanism (12) is hinged to the bottom of the staircase (4).

3. The large-diameter shield box culvert operation platform according to claim 2 is characterized by: The telescopic mechanism (12) is an electric telescopic rod or a hydraulic telescopic rod.

4. The large-diameter shield box culvert operation platform according to claim 1 is characterized by: The pushing mechanism comprises two baffles (9) and two hydraulic cylinders (8); hydraulic cylinder fixing frames (7) are fixed at both ends of the guardrail (3); the two hydraulic cylinders (8) are respectively fixed on the hydraulic cylinder fixing frames (7); the two baffles (9) are respectively located on two guide rail brackets (5); when the output end of the hydraulic cylinder (8) applies a thrust to the baffle (9), the guardrail (3) moves along the guide rail (15).

5. The large-diameter shield box culvert operation platform according to claim 4 is characterized by: The guide rail bracket (5) is provided with a plurality of rectangular slots (14) at equal intervals. The rectangular slots (14) are suitable for inserting the baffle plate (9). The baffle plate (9) is detachably connected to the rectangular slots (14).

6. The large-diameter shield box culvert operation platform according to claim 5 is characterized by: The baffle (9) comprises a baffle body (91) and a limiting plate (92); the baffle body (91) is suitable for being inserted into the rectangular slot (14), and the thickness of the baffle body (91) is the same as the width of the rectangular slot (14); the limiting plate (92) is fixed on both sides of the upper part of the baffle body (91); the baffle body (91) is perpendicular to the limiting plate (92), and the limiting plate (92) contacts the upper end surface of the rectangular slot (14).

7. The large-diameter shield box culvert operation platform according to claim 6 is characterized by: The baffle (9) is made of steel plate.

8. The large-diameter shield box culvert operation platform according to claim 4 is characterized by: The two hydraulic cylinders (8) are both connected to a hydraulic branch pipe (10), the other ends of the two hydraulic branch pipes (10) are connected to a hydraulic main pipeline (11), and the other end of the hydraulic main pipeline (11) is connected to a hydraulic pump.

9. The large-diameter shield box culvert operation platform according to claim 1 is characterized by: The pushing mechanism comprises a rail clamp oil cylinder (16), the rail clamp oil cylinder (16) comprises a rail clamp, the rail clamp is fixed with an oil cylinder, the rail clamp is clamped on the guide rail (15), and the output end of the oil cylinder abuts against the guardrail (3).

10. The large-diameter shield box culvert operation platform according to claim 1 is characterized by: A high-pressure cleaning water gun is installed on the guardrail (3).

Images