Shield trolley retreating device

Abstract

The utility model relates to the technical field of shield construction equipment, and discloses a shield trolley retreating device which comprises a pipe piece, a trolley and an electric locomotive flat car are arranged in the pipe piece, profile steel is installed on the top of the electric locomotive flat car, the profile steel is arranged at the bottom of the trolley, a trolley bracket is fixedly connected to the bottom of the trolley, and the trolley bracket is fixedly connected to the bottom of the electric locomotive flat car. A jack base is arranged in the pipe piece, a jack is fixedly connected to the top of the jack base, the top of the jack is arranged at the bottom of the trolley bracket, and an electric locomotive sleeper is arranged in the pipe piece. According to the utility model, under the coordination and cooperation of the jack, the trolley bracket, the profile steel and the electric locomotive flat car, the jacking, dismounting and falling processes of the trolley are reasonably designed, the interference problem is effectively avoided, the efficiency of the retreating operation of the trolley is improved, the construction cost is reduced, and the safety of the construction process is ensured.

Description

Technical Field

[0001] This utility model relates to the field of shield tunneling equipment technology, and in particular to a shield tunneling trolley retraction device. Background Technology

[0002] During subway tunnel construction, due to planning requirements or busy ground traffic, sometimes the subway station ahead is already capped and ground traffic is restored before the tunnel is completed. When the tunnel boring machine reaches the receiving station, it cannot be lifted out of the shaft directly because the top is already closed. At this time, the dismantling of the tunnel boring machine needs to be completed underground, and the dismantled parts are transported back through the tunnel to the starting shaft and then lifted to the ground. In this process, the backward movement of the trolley is an essential operation.

[0003] Under normal circumstances, the shield tunneling trolley is transported by building a steel frame on the bottom of the receiving shaft. The trolley track and sleepers are installed on the steel frame. Then, a winch is used to move the shield tunneling trolley from inside the tunnel to the designated position in the receiving shaft. Finally, a ground-mounted crane lifts the trolley to the ground to complete the subsequent transfer operation.

[0004] Existing methods for tunnel boring machine (TBM) trolley retraction require manual construction of steel frames and laying of long-distance rails, which is not only labor-intensive and costly but also time-consuming. Furthermore, due to limited space in the receiving shaft, the TBM may interfere with the main structure during hoisting operations, causing scraping or damage to the equipment. In more serious cases, it may even lead to wire rope breakage, resulting in casualties and property damage. Therefore, a TBM trolley retraction device is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a shield tunneling trolley retraction device, which aims to improve the existing technology that requires the pre-construction of steel frames and the laying of long-distance steel rails, which consumes manpower and financial resources and is prone to causing casualties and property damage.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A shield tunneling trolley retraction device includes a tunnel segment, inside which a trolley and an electric locomotive flatbed are arranged. A steel section is installed on the top of the electric locomotive flatbed, and the steel section is arranged at the bottom of the trolley.

[0008] As a further description of the above technical solution:

[0009] The bottom of the trolley is fixedly connected to a trolley bracket, the inside of the tube segment is provided with a jack base, the top of the jack base is fixedly connected to a jack, and the top of the jack is located at the bottom of the trolley bracket.

[0010] As a further description of the above technical solution:

[0011] The tunnel segment is equipped with a locomotive sleeper, and the top of the locomotive sleeper is fixedly connected to a locomotive track. The locomotive flatbed is slidably connected to the top of the locomotive track.

[0012] As a further description of the above technical solution:

[0013] The tunnel segment is equipped with a trolley sleeper inside, and a trolley track is fixedly connected to the top of the trolley sleeper. The trolley is slidably connected to the top of the trolley track.

[0014] As a further description of the above technical solution:

[0015] The bottom of the trolley is equipped with trolley wheels, which are slidably connected to the top of the trolley track.

[0016] As a further description of the above technical solution:

[0017] The steel profile is a high-strength H-beam steel material;

[0018] As a further description of the above technical solution:

[0019] The jack base is made of 20mm thick steel plate.

[0020] As a further description of the above technical solution:

[0021] The trolley bracket is made of alloy steel.

[0022] This utility model has the following beneficial effects:

[0023] In this invention, the lifting, disassembly, and lowering process of the trolley is rationally designed through the cooperation of jacks, trolley brackets, structural steel, and electric locomotives and flatbeds, avoiding interference, improving the efficiency of the trolley's retraction, reducing costs, and ensuring safety during construction. Attached Figure Description

[0024] Figure 1 This is a plan view of a shield tunneling trolley retraction device proposed in this utility model.

[0025] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0026] Legend:

[0027] 1. Segment; 2. Trolley; 3. Structural steel; 4. Trolley sleeper; 5. Electric locomotive sleeper; 6. Trolley wheel; 7. Electric locomotive flatbed; 8. Trolley track; 9. Electric locomotive track; 10. Jack; 11. Jack base; 12. Trolley bracket. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Reference Figure 1 and Figure 2 The present invention provides an embodiment of a shield tunnel trolley retraction device, comprising a tunnel segment 1, a trolley 2 and a motor vehicle flatbed 7 are arranged inside the tunnel segment 1, a steel section 3 is installed on the top of the motor vehicle flatbed 7, the steel section 3 is arranged at the bottom of the trolley 2, the steel section 3 of the motor vehicle flatbed 7 supports the top of the trolley 2, and the motor vehicle flatbed 7 is used to bring the trolley 2 out of the tunnel. The bottom of the trolley 2 is fixedly connected to a trolley bracket 12. A jack base 11 is installed inside the tunnel segment 1. A jack 10 is fixedly connected to the top of the jack base 11. The top of the jack 10 is positioned at the bottom of the trolley bracket 12, and the top of the jack 10 contacts the trolley bracket 12, vertically lifting the trolley 2 so that its bottom is detached from the trolley track 8, creating some space. A motor car sleeper 5 is installed inside the tunnel segment 1, and a motor car track 9 is fixedly connected to the top of the motor car sleeper 5. A motor car flatbed 7 is slidably connected to the top of the motor car track 9, and the motor car flatbed 7 drives into the bottom of the trolley 2 via the motor car track 9. A trolley sleeper 4 is installed inside the tunnel segment 1, and a trolley track 8 is fixedly connected to the top of the trolley sleeper 4. The trolley 2 is slidably connected to the top of the trolley track 8, and contacts the trolley track 8 before being lifted. The bottom of the trolley 2 is equipped with trolley wheels 6, which are slidably connected to the top of the trolley track 8. After the trolley 2 is lifted to a certain height, it provides space for workers to disassemble the trolley wheels 6.

[0030] Reference Figure 1 and Figure 2 Section 3 is made of high-strength H-beam steel, featuring high load-bearing capacity, good bending and shear resistance, and meeting various engineering requirements. Jack base 11 is made of 20mm thick steel plate, possessing high strength, strong pressure resistance, and excellent deformation resistance, capable of stably bearing heavy loads and suitable for high-intensity construction environments. Trolley bracket 12 is made of alloy steel, possessing high strength and good toughness, capable of withstanding high loads and complex working conditions, suitable for heavy-duty and high-intensity construction scenarios.

[0031] Working principle: Two sets of jacks 10 are installed at the bottom of the trolley bracket 12 of the trolley 2 to vertically lift the trolley 2. During the lifting process, it is observed that there should be no cross-interference between the trolley 2 and the inner arc surface of the tunnel segment 1. The height of the trolley 2 during the lifting process is controlled so that the bottom of the trolley wheel 6 is separated from the trolley track 8. The workers disassemble the trolley wheel 6. Two steel sections 3 are horizontally installed on the top of the electric locomotive flatbed 7. The jacks 10 are retracted to their original positions, so that the trolley 2 falls back onto the electric locomotive flatbed 7. All the weight of the bottom of the trolley 2 is transferred to the steel sections 3. Finally, the electric locomotive flatbed 7 carries the trolley 2 out of the tunnel, completing the trolley 2 retraction work. This device is highly efficient, low in cost, and greatly improves the safety of construction.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A shield tunneling trolley retraction device, comprising tunnel lining segments (1), characterized in that: The tube segment (1) is equipped with a trolley (2) and a motor car flatbed (7). A steel section (3) is installed on the top of the motor car flatbed (7), and the steel section (3) is located at the bottom of the trolley (2).

2. The shield tunneling trolley retraction device according to claim 1, characterized in that: The bottom of the trolley (2) is fixedly connected to a trolley bracket (12), and the inside of the tube segment (1) is provided with a jack base (11). The top of the jack base (11) is fixedly connected to a jack (10), and the top of the jack (10) is located at the bottom of the trolley bracket (12).

3. The shield tunneling trolley retraction device according to claim 1, characterized in that: The interior of the segment (1) is provided with a locomotive sleeper (5), and the top of the locomotive sleeper (5) is fixedly connected to a locomotive track (9). The locomotive flatbed (7) is slidably connected to the top of the locomotive track (9).

4. The shield tunneling trolley retraction device according to claim 1, characterized in that: The tube segment (1) is provided with a trolley sleeper (4) inside, and a trolley track (8) is fixedly connected to the top of the trolley sleeper (4). The trolley (2) is slidably connected to the top of the trolley track (8).

5. A shield tunneling trolley retraction device according to claim 4, characterized in that: The bottom of the trolley (2) is equipped with a trolley wheel (6), which is slidably connected to the top of the trolley track (8).

6. The shield tunneling trolley retraction device according to claim 1, characterized in that: The steel section (3) is a high-strength H-beam material.

7. A shield tunneling trolley retraction device according to claim 2, characterized in that: The jack base (11) is made of 20mm thick steel plate.

8. A shield tunneling trolley retraction device according to claim 2, characterized in that: The trolley bracket (12) is made of alloy steel.

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