A load ramp test platform of a shield translation trolley

Abstract

The utility model discloses a kind of load ramp test platforms of shield translation trolley, it is related to shield construction technology field, including ramp support, the rotary table for providing ramp rotation support of shield translation trolley is equipped in this ramp support, and the hydraulic cylinder for providing rotary power of rotary table is equipped in this ramp support;One end of hydraulic cylinder is connected with ramp support slope inner wall pin shaft, and the rotary part of rotary table is tangentially pin shaft and is supported and radially slidingly connected with power output end of hydraulic cylinder.This platform can flexibly adjust trolley orientation, simulate different direction slope working condition, solve the problem that fixed ramp cannot be adjusted, test function is single.

Description

Technical Field

[0001] This utility model relates to the field of tunnel boring machine (TBM) construction technology, specifically to a load-bearing ramp test platform for a TBM translation trolley. Background Technology

[0002] A tunnel boring machine (TBM) is a large, critical piece of equipment used for tunnel excavation. It is typically followed by multiple trolleys that carry hydraulic, electrical, and grouting systems. However, in complex construction environments, such as those involving ground structures, roads, or reservoirs, where the TBM launch site is difficult to construct using traditional vertical shafts, an inclined shaft is necessary to connect to the launch site. The TBM and its supporting equipment are then carried into the inclined shaft by a TBM translation trolley before being assembled at the launch site.

[0003] However, due to limitations in slope, turning radius, and road surface quality after the inclined shaft is excavated, the performance of the shield tunneling translation trolley in all directions must be tested before it is lowered into the shaft. This includes load and friction tests in the forward and backward directions and in the lateral sliding direction under the same load conditions to ensure its reliability.

[0004] Existing testing methods mostly employ the construction of fixed-angle concrete ramps or simple steel-frame ramps. These ramps have significant drawbacks: First, being fixed structures, they prevent the trolley's orientation from being adjusted to simultaneously simulate forward and backward slopes as well as lateral slopes, thus limiting the testing range; second, they require a large area, have high construction costs, and are difficult to move and reuse; finally, when testing the trolley on a fixed ramp, performance tests such as steering become inconvenient.

[0005] Therefore, there is an urgent need for a shield tunnel translation trolley test platform that can flexibly adjust the slope, simulate real slope conditions, and facilitate turning tests. Utility Model Content

[0006] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one objective of the present invention is to provide a load-bearing ramp test platform for a tunnel boring machine translation trolley. This platform can flexibly adjust the orientation of the trolley and simulate different slope conditions, thus solving the problems of fixed ramps being unable to be adjusted and having limited testing functions.

[0007] To address the aforementioned problems, this utility model provides a load-bearing ramp test platform for a shield tunneling translation trolley, including a ramp support. The ramp support contains a turntable that provides ramp rotation support for the shield tunneling translation trolley, and a hydraulic cylinder that provides rotational power to the turntable. One end of the hydraulic cylinder is connected to a pin on the inner wall of the ramp support, and the power output end of the hydraulic cylinder is supported and radially slidably connected to the tangential pin of the rotating part of the turntable.

[0008] Preferably, the turntable includes a rotating base and a turntable; The rotating base has a flange-shaped structure. The rotating base is inclined and fixed inside the ramp support. A support plate is fixed on the top of the rotating base, and a shaft hole for rotating and inserting the turntable is opened in the center of the top of the rotating base. The top surface of the turntable is flush with the top slope of the ramp support. The middle part of the turntable is rotated and overlapped on the support plate, and a rotating shaft inserted into the shaft hole is integrally fixed on the bottom surface of the middle part of the turntable.

[0009] Preferably, the turntable is symmetrically provided with radially protruding lugs on its outer periphery, and each lug has a long hanging hole that extends radially and passes through axially; a pin is connected to the power output end of the hydraulic cylinder in the long hanging hole.

[0010] Preferably, the hydraulic cylinders are provided in multiple sets and are arranged symmetrically on the axis inside the ramp support.

[0011] The advantages of this utility model regarding the load-bearing ramp test platform for a tunnel boring machine translation trolley compared to existing technologies are as follows: 1. Integrated functions, multi-purpose: It integrates ramp support and rotation functions, and can perform conventional static and dynamic load tests on ramps, as well as simulate the turning process of the trolley on the ramp, making it a comprehensive testing device.

[0012] 2. Adjustable slope for realistic simulation: By driving the turntable to rotate to different angles, the test slope can be changed accordingly, simulating various slope conditions from gentle to steep. The test data is closer to actual engineering conditions and has a wide range of applications.

[0013] 3. Stable structure and strong load-bearing capacity: The turntable adopts a structure that combines a flange base with a turntable, which provides stable support and can withstand the huge weight of the tunnel boring machine. The equipment has good rigidity and a long service life.

[0014] 4. Smooth drive and precise control: The hydraulic cylinder drive provides strong and smooth power. The rotation angle and speed can be precisely controlled through the hydraulic system, making the testing process controllable and safe.

[0015] 5. Space-saving and economical: Compared with fixed cement ramps, this platform has a compact structure, saving valuable site space and can be reused, reducing testing costs. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a cross-sectional view of the present invention; Figure 2 This is a schematic diagram of the structure of the transfer platform of this utility model (maximum turning angle posture). Figure 3 This is a schematic diagram of the structure of the transfer platform of this utility model (minimum turning angle posture). In the diagram: 1-ramp support; 2-shield tunnel translating trolley; 3-rotating shaft; 4-turntable; 5-support plate; 6-shaft hole; 7-rotating base; 8-hanging lug; 9-long hanging hole; 10-hydraulic cylinder. Detailed Implementation

[0018] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0019] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0020] The present invention will now be described in further detail with reference to the accompanying drawings.

[0021] like Figures 1 to 3 As shown, the present invention provides a load-bearing ramp test platform for a shield tunnel translation trolley, which mainly consists of a ramp support 1, a turntable, and a hydraulic drive system.

[0022] The ramp support 1 is a sturdy steel frame structure, tilted to simulate the slope of an actual inclined shaft. Its top is a load-bearing surface for laying anti-slip plates, etc.

[0023] The turntable is the core functional component, installed inside the ramp support 1. It includes a rotating base 7 and a turntable 4. The rotating base has a flange-shaped structure, its inclination angle matching the slope of the ramp support 1, and is fixed inside the support with high-strength bolts. An annular support plate 5 is fixed to the top of the rotating base, with a shaft hole 6 in its center. The top surface of the turntable 4 is flush with the top slope of the ramp support 1, and a rotating shaft 3 is vertically welded to its bottom surface. During assembly, the rotating shaft 3 is inserted into the shaft hole 6, and the bottom surface of the turntable 4 rests on the support plate 5, allowing the turntable 4 to rotate smoothly around its central axis.

[0024] On the outer circumference of the turntable 4, radially protruding lugs 8 are symmetrically welded. Each lug 8 has a radially extending elongated hanging hole 9. Multiple sets (e.g., two sets) of hydraulic cylinders 10 are arranged axially symmetrically inside the ramp support 1. The tail end of the cylinder body of the hydraulic cylinder 10 is hinged to the inner wall of the ramp support 1 via a pin. The piston rod end (power output end) of the hydraulic cylinder 10 is connected to the elongated hanging hole 9 on the lug 8 via a pin.

[0025] Working principle: During the test, the shield tunneling translation trolley 2 is moved to the top surface of the turntable 4 and braked to secure it. When it is necessary to test the trolley's performance on slopes in different directions (e.g., to simulate a side slip condition), the hydraulic system is activated, controlling multiple sets of hydraulic cylinders 10 to extend and retract synchronously. The piston rods of the hydraulic cylinders 10 push the lugs 8, generating a torque that drives the turntable 4 to rotate. The turntable 4 then slowly rotates the trolley 2 on it to a predetermined angle (e.g., ...). Figure 2 or Figure 3 (As shown). At this time, the axis of the trolley 2 forms an angle with the tilt direction (i.e., the main slope direction) of the ramp support 1. The slope borne by the trolley can be decomposed into components along its traveling direction and lateral direction, thus realizing the simulation of different working conditions such as forward, backward, and side slip. The design of the long hanging hole 9 ensures that the connecting pin can slide radially along the hole during rotation, so that the force transmission is always tangential to the circumference of the turntable, and the action is smooth and without interference.

[0026] Finally, any aspects of this utility model not fully described herein utilize existing mature products and technologies.

[0027] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A load-bearing ramp test platform for a shield tunneling translation trolley, characterized in that: The device includes a ramp support, which contains a turntable that provides ramp rotation support for the shield tunneling translation trolley, and a hydraulic cylinder that provides rotational power to the turntable. One end of the hydraulic cylinder is connected to a pin on the inner wall of the ramp support, and the power output end of the hydraulic cylinder is supported and radially slidably connected to the tangential pin of the rotating part of the turntable.

2. The load-bearing ramp test platform for a shield tunnel translation trolley according to claim 1, characterized in that: The turntable includes a rotating base and a turntable; The rotating base is a flange-shaped structure. The rotating base is inclined and fixed inside the ramp support. A support plate is fixed on the top of the rotating base, and a shaft hole for rotating and inserting a turntable is opened in the center of the top of the rotating base. The top surface of the turntable is flush with the top slope of the ramp support. The middle part of the turntable is rotated and overlapped on the support plate, and a rotating shaft inserted into the shaft hole is integrally fixed on the bottom surface of the middle part of the turntable.

3. The load-bearing ramp test platform for a shield tunnel translation trolley according to claim 2, characterized in that: The turntable is symmetrically provided with radially protruding hanging ears on its outer periphery. Each hanging ear has a long hanging hole that extends radially and passes through axially. The power output end of the hydraulic cylinder is connected to the long hanging hole by a pin.

4. The load-bearing ramp test platform for a shield tunnel translation trolley according to claim 3, characterized in that: The hydraulic cylinders are arranged in multiple sets and symmetrically on the axis inside the ramp support.

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