Shield trolley retreating device
By welding the brackets at the bottom of the shield trolley and lifting it with a jack, combined with the electric locomotive flatbed and H-shaped steel to transfer gravity, the problems of long lifting time and safety hazards in the existing technology are solved, and the shield trolley is safely and efficiently retracted.
Patent Information
- Application Number
- CN202423032847.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-10
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2034-12-10
AI Technical Summary
The existing shield trolley hoisting process requires manual erection of steel frames, which is time-consuming and may cause equipment damage and safety hazards.
A bracket is welded to the bottom of the shield trolley and equipped with a jack. The jack is used to lift the trolley off the track. The electric locomotive flatbed car and H-shaped steel are used to transfer gravity to achieve the safe retraction of the trolley.
It simplifies the lifting process, reduces costs and time consumption, and avoids equipment damage and safety risks.
Smart Images
Figure CN223447097U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The shield construction device belongs to the technical field of shield construction devices, and particularly relates to a shield trolley retreating device. BACKGROUND
[0002] The shield trolley retreating device is mainly used for, after a shield tunneling machine completes a tunneling task, lifting the shield trolley back to a flat car through jacks in a formed tunnel, and withdrawing the shield trolley out of the tunnel by using a motor car in the tunnel. At present, a conventional shield trolley hoisting operation is performed by adopting a type steel to set a frame on a receiving well bottom plate, installing a trolley track and a track sleeper on the type steel frame, and then using a winch to lift the shield trolley from the tunnel to a position of a shield receiving well, and using a fixed ground crane to start hoisting the shield trolley to the ground for hoisting and transporting. This method needs to manually set the type steel frame in advance, has high cost, and consumes long time. In addition, due to the size limitation of the receiving well, the trolley and the main body structure interfere with each other during hoisting operation, the trolley equipment may be damaged during the hoisting process, and in severe cases, the steel wire rope may be broken, causing personnel injury and property damage. SUMMARY
[0003] The shield trolley retreating device is mainly used for, after a shield tunneling machine completes a tunneling task, lifting the shield trolley back to a flat car through jacks in a formed tunnel, and withdrawing the shield trolley out of the tunnel by using a motor car in the tunnel. At present, a conventional shield trolley hoisting operation is performed by adopting a type steel to set a frame on a receiving well bottom plate, installing a trolley track and a track sleeper on the type steel frame, and then using a winch to lift the shield trolley from the tunnel to a position of a shield receiving well, and using a fixed ground crane to start hoisting the shield trolley to the ground for hoisting and transporting. This method needs to manually set the type steel frame in advance, has high cost, and consumes long time. In addition, due to the size limitation of the receiving well, the trolley and the main body structure interfere with each other during hoisting operation, the trolley equipment may be damaged during the hoisting process, and in severe cases, the steel wire rope may be broken, causing personnel injury and property damage.
[0004] To achieve the above object, the utility model provides the following technical scheme:
[0005] A shield trolley retreating device is characterized in that two groups of corbels are welded at the bottom of a shield trolley, one group has two corbels, and four jacks are arranged below the corbels; the jacks are placed on a base, the base is made of a 20mm-thick steel plate, the base is fixed with an inner arc surface of a segment, the four jacks are synchronously operated during the jacking process, and the height difference is not more than 10mm; the trolley wheels are separated from the trolley track during jacking, and the top of the trolley does not interfere with the inner arc surface of the tunnel; two H-shaped steels are arranged on a motor car flat car, and the H-shaped steels are used for transmitting the gravity of the trolley to the motor car flat car.
[0006] Compared with the prior art, the utility model has the beneficial effects that:
[0007] The utility model is characterized in that corbels are welded at the bottom of the trolley, the jacking operation is performed by using the jacks, the bottom of the trolley has a certain space from the track, the type steel is installed on the motor car flat car, then the motor car is driven into the trolley, the trolley is stressed on the flat car after the jacks are retracted, the motor car is driven out of the tunnel, and the trolley retreating operation is ensured. BRIEF DESCRIPTION OF DRAWINGS
[0008] Figure 1 The shield trolley retreating device is mainly used for, after a shield tunneling machine completes a tunneling task, lifting the shield trolley back to a flat car through jacks in a formed tunnel, and withdrawing the shield trolley out of the tunnel by using a motor car in the tunnel. At present, a conventional shield trolley hoisting operation is performed by adopting a type steel to set a frame on a receiving well bottom plate, installing a trolley track and a track sleeper on the type steel frame, and then using a winch to lift the shield trolley from the tunnel to a position of a shield receiving well, and using a fixed ground crane to start hoisting the shield trolley to the ground for hoisting and transporting. This method needs to manually set the type steel frame in advance, has high cost, and consumes long time. In addition, due to the size limitation of the receiving well, the trolley and the main body structure interfere with each other during hoisting operation, the trolley equipment may be damaged during the hoisting process, and in severe cases, the steel wire rope may be broken, causing personnel injury and property damage.
[0009] In the figure: the inner arc surface of the pipe segment-1, the shield machine trolley-2, the H-shaped steel-3, the trolley sleeper-4, the electric locomotive sleeper-5, the trolley wheel-6, the electric locomotive flat car-7, the trolley track-8, the electric locomotive track-9, the jack-10, the base-11. DETAILED DESCRIPTION
[0010] In order to more clearly illustrate the overall concept of the utility model, the following will be described in detail in an exemplary manner combined with the drawings of the specification.
[0011] It should be noted that in the following description, many specific details are set forth in order to provide a thorough understanding of the utility model, however, the utility model can also be implemented in other ways different from those described herein, therefore, the protection scope of the utility model is not limited by the specific embodiments disclosed below.
[0012] Please refer to the accompanying Figure 1 As shown in the figure, the utility model provides a shield trolley retreat device, its characterized in that, welding 2 groups of corbels on the bottom of the shield machine trolley 2, one group has 2, 4 jacks 10 are arranged below the corbel; the jack 10 is placed on the base 11, the base 11 is made of 20mm thick steel plate, the base 11 is fixed with the inner arc surface of the pipe segment 1, 4 jacks are synchronous during the jacking process of the jack 10, and the height difference is not more than 10mm; the trolley wheel 6 is separated from the trolley track 8 during jacking, and the top of the trolley and the inner arc surface of the tunnel cannot have intersection interference phenomenon; 2 H-shaped steels 3 are arranged on the electric locomotive flat car 7, and the H-shaped steel 3 is used to transmit the gravity of the trolley to the electric locomotive flat car 7. Figure 1 The utility model also includes the trolley sleeper 4, the electric locomotive sleeper 5 and the electric locomotive track 9.
[0013] When using, the jacks are started simultaneously, the height difference of the 4 jacks is controlled, and the trolley and the inner arc surface of the pipe segment cannot have intersection interference phenomenon during the jacking process; after the bottom of the trolley wheel 6 is separated from the surface of the trolley track 8 and maintains a certain height, the hole working staff informs the electric locomotive driver to drive the flat car into the inside of the trolley, and the flat car is provided with 2 H-shaped steels; the staff disassembles the trolley wheel, then retracts the jacks of the trolley corbel, the gravity of the bottom of the trolley is transmitted to the H-shaped steel, and the bottom of the trolley has a certain space with the pipe segment, then the electric locomotive flat car is carried on the trolley and drives out of the tunnel.
[0014] In order to ensure the fixation between the trolley and the electric locomotive, the friction between the trolley and the electric locomotive is increased by using non-slip pads and other materials.
[0015] After the above work is completed, the electric locomotive driver transports the carried trolley in the tunnel, the trolley is prohibited from sliding off the flat car during the transportation process, and overspeed driving is strictly prohibited during the transportation process.
[0016] The key point of the patent is to lift the trolley vertically; two H-shaped steels are arranged on the motor trolley flat car, the gravity of the trolley is transmitted to the H-shaped steels, and the trolley is transported to outside the tunnel by using the battery car flat car in the tunnel, so that the safety of the trolley back-off is ensured.
[0017] Compared with the prior art, the present application has at least one of the following advantages:
[0018] 1. The trolley is lifted by the jack, and is transported to outside the tunnel by the battery car flat car in the tunnel.
[0019] 2. The time and cost of the project are saved.
[0020] Those skilled in the art will understand that the discussion of any of the above embodiments is merely exemplary and is not intended to suggest that the scope of the present application (including the claims) is limited to these examples; under the concept of the present application, the above embodiments or technical features in different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes of different aspects of the present application as described above, which are not provided in details for the sake of brevity.
[0021] The present application is intended to cover all such alternatives, modifications, and variations as fall within the broad scope of the appended claims. Accordingly, any and all such modifications, variations, and equivalents that fall within the spirit and scope of the present application are intended to be included within the scope of the present application.
Claims
1. A shield trolley retreat device, characterized in that: Two groups of brackets are welded at the bottom of the shield machine trolley, with two in each group, and four jacks (10) are arranged under the brackets; the jacks (10) are placed on a base (11), and the base (11) is made of a 20 mm thick steel plate. The base (11) is fixed to the inner arc surface (1) of the pipe segment. During the jacking process of the jacks (10), the four jacks are operated synchronously, and the height difference does not exceed 10 mm; during the jacking, the trolley wheels (6) are separated from the trolley track (8), and there is no cross interference between the trolley top and the inner arc surface of the tunnel; two H-shaped steels (3) are arranged on the electric locomotive flatbed car (7), and the H-shaped steels (3) are used to transfer the weight of the trolley to the electric locomotive flatbed car (7).