A test counterweight positioning support for a shield translation trolley

Abstract

The utility model discloses a kind of test counterweight positioning support of shield translation trolley, it is related to shield construction technical field, the positioning support is erected on the frame beam of shield translation trolley both sides, define the direction of shield translation trolley's entry, retreat as X direction, both sides direction as Y direction, vertical direction as Z direction, positioning support includes multiple I-beam, and X direction connects multiple I-beam's threaded steel;I-beam X direction interval arrangement and Y direction are straddled on shield translation trolley, and the fixed ring of plug-in threaded steel is solidly provided in the Y direction both sides of I-beam, by multiple I-beam cooperation support counterweight block.The counterweight positioning support simple structure, installation is convenient, positioning is stable, effectively ensure the safety and accuracy of load test.

Description

Technical Field

[0001] This utility model relates to the field of tunnel boring machine (TBM) construction technology, specifically to a test counterweight positioning bracket for a TBM translation trolley. Background Technology

[0002] In shield tunneling, the shield translation trolley is a crucial device for transporting and supporting the equipment attached to the shield machine. To ensure its structural strength, rigidity, and operational stability, a load test is required before delivery or after major overhaul. Traditional testing methods typically involve directly stacking counterweights (such as concrete blocks or steel ingots) on the trolley frame. This method has the following drawbacks: 1. Poor positioning: The counterweight is prone to sliding or shifting during the movement of the trolley (especially in curve or slope tests), resulting in uneven load distribution, affecting the accuracy of test data, and may even cause safety accidents.

[0003] 2. Insufficient stability: Due to the lack of effective limits and connections, the stacked counterweights have poor overall stability and pose a risk of tipping over when the trolley starts, stops, or changes speed.

[0004] 3. Inefficient: Each test requires repeated manual adjustment and stabilization of the counterweight, which is time-consuming and labor-intensive.

[0005] Therefore, there is an urgent need for a dedicated counterweight positioning bracket that can be quickly installed, accurately positioned, and securely connected to solve the above problems. Utility Model Content

[0006] The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of the present invention is to provide a test counterweight positioning bracket for a tunnel boring machine translation trolley. This counterweight positioning bracket has a simple structure, is easy to install, and provides stable positioning, effectively ensuring the safety and accuracy of the load test.

[0007] To address the aforementioned problems, this utility model provides a test counterweight positioning bracket for a shield tunneling translation trolley. This positioning bracket is erected on the frame beams on both sides of the shield tunneling translation trolley. The forward and backward directions of the shield tunneling translation trolley are defined as the X-axis, the lateral directions as the Y-axis, and the vertical direction as the Z-axis. The positioning bracket includes multiple I-beams and threaded steel bars connecting the multiple I-beams in the X-axis direction. The I-beams are spaced apart in the X-axis direction and span across the shield tunneling translation trolley in the Y-axis direction. Fixing rings with inserted threaded steel bars are fixed to both sides of the I-beams in the Y-axis direction. The counterweight is supported by multiple I-beams.

[0008] Preferably, diagonal bracing supports are fixed on both sides of the bottom surface of the I-beam. These diagonal bracing supports are used to abut against the edge of the frame beam of the shield tunneling trolley to provide Y-direction limiting support for the I-beam on the shield tunneling trolley.

[0009] Preferably, multiple I-beam legs are fixed in the middle of the bottom surface of the I-beam for placing the I-beam on a horizontal ground in a non-test state.

[0010] Preferably, Z-direction extending limiting supports are fixed on both sides of the top surface of the I-beam to limit the Y-direction sliding of the counterweight placed on the I-beam.

[0011] Preferably, the fixing ring serves as the connection point for the lifting lug and the threaded steel bar. During the lifting process, the crane hook is installed on the fixing ring, and during the test, the positioning threaded steel bar is inserted into the fixing ring.

[0012] The advantages of this utility model for the test counterweight positioning bracket of a shield tunnel translation trolley compared with the prior art are as follows: 1. Modularity and efficiency: Multiple independent I-beam modules are used, which are quickly connected into an integral support through threaded steel bars. The installation and disassembly are simple, which greatly improves the efficiency of test preparation.

[0013] 2. Accurate and stable positioning: The Y-direction is limited by the bracing of the diagonal brace and the edge of the trolley frame beam; the counterweight is constrained by the top limiting support; and the I-beams are connected into a whole by the threaded steel bars, which together form a reliable constraint in the X, Y and Z directions, effectively preventing the counterweight from moving or overturning during the test, and ensuring the stability of the load distribution and the safety of the test.

[0014] 3. Functional Integration and Practicality: The fixing ring integrates hoisting and connection functions into one compact structure, offering multiple uses. The added I-beam legs allow the support to be placed independently and stably when not in use, facilitating management.

[0015] 4. Simple structure and low cost: It mainly uses standard profiles such as I-beams and rebar and simple components, which are easy to manufacture, inexpensive, sturdy and durable, and very suitable for construction site application environments. 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 schematic diagram of the experimental installation posture of this utility model; Figure 2 This is a structural schematic diagram of the I-beam in this utility model; Figure 3 This is a top view of the present invention; In the diagram: 1-frame beam; 2-shield tunneling trolley; 3-I-beam; 4-I-beam support leg; 5-counterweight; 6-limiting support; 7-threaded steel bar; 8-diagonal brace support; 9-fixing ring. 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] Combination Figures 1-3 This utility model discloses a test counterweight positioning bracket for a shield tunneling translation trolley. The positioning bracket is erected on the frame beams 1 on both sides of the shield tunneling translation trolley 2. The forward and backward directions of the shield tunneling translation trolley are defined as the X direction, the lateral directions as the Y direction, and the vertical direction as the Z direction. The positioning bracket includes multiple I-beams 3 and threaded steel bars 7 connecting the multiple I-beams in the X direction. The I-beams are arranged at intervals in the X direction and span across the shield tunneling translation trolley in the Y direction. Fixing rings 9 with inserted threaded steel bars are fixed on both sides of the I-beams in the Y direction. The counterweight block 5 is supported by multiple I-beams.

[0022] Preferably, inclined bracing supports 8 are fixed on both sides of the bottom surface of the I-beam. These inclined bracing supports are used to support the edge of the frame beam of the shield translation trolley, so as to limit and support the I-beam in the Y direction on the shield translation trolley.

[0023] Preferably, multiple I-beam legs 4 are fixed in the middle of the bottom surface of the I-beam for placing the I-beam on a horizontal ground in a non-test state.

[0024] Preferably, Z-direction extending limiting supports 6 are fixed on both sides of the top surface of the I-beam to limit the Y-direction sliding of the counterweight placed on the I-beam.

[0025] Preferably, the fixing ring serves as the connection point for the lifting lug and the threaded steel bar. During the lifting process, the crane hook is installed on the fixing ring, and during the test, the positioning threaded steel bar is inserted into the fixing ring.

[0026] The working principle of this invention is as follows: A modular, quickly assembled support system provides reliable three-dimensional (X, Y, Z) constraints for the counterweight placed on the tunnel boring machine's translation trolley, thereby simulating a stable and safe load condition and ensuring the accuracy and safety of the experiment. The specific working principle is as follows: 1. Installation preparation and positioning: First, each independent I-beam 3 is hoisted onto the two side frame beams 1 of the shield translation trolley 2 by a crane (the hook is attached to the fixed ring 9). Based on the total weight of the test counterweight and the surface friction coefficient of the counterweight block, an appropriate number of I-beams are selected as supports.

[0027] The I-beams 3 are arranged at intervals along the length (X-direction) of the trolley and are laid laterally (Y-direction) across the frame beams 1 on both sides. During placement, ensure that the inner sides of the diagonal bracing supports 8 on both sides of the bottom surface of the I-beams 3 are tightly abutted against the edges of the frame beams 1. This design utilizes the trolley's own structure to instantly and precisely position and limit the I-beams 3 in the Y-direction, effectively preventing lateral movement during trolley operation.

[0028] 2. Overall connection and reinforcement: After all the I-beams 3 are in place, the threaded steel bars 7 are passed sequentially through the retaining rings 9 on all the I-beams 3 on the same side. The retaining rings 9 serve to connect the base and prevent changes in the X-direction spacing between the first and last I-beams.

[0029] After the threaded steel bars 7 are threaded through, they can be tightened with nuts at both ends or their ends can be bent to firmly connect all the individual I-beams 3 in the X direction into a rigid integral frame. This step greatly enhances the longitudinal (X-direction) stability and integrity of the entire support system, preventing the I-beams 3 from shifting forward or backward when the trolley starts, stops, or changes speed.

[0030] 3. Counterweight loading and limit: At this point, a stable supporting plane has been formed. The counterweights 5 (such as concrete blocks, steel ingots, steel plates, etc.) that serve as the load are hoisted and evenly distributed on each I-beam 3.

[0031] The limiting supports 6 welded on both sides of the top surface of the I-beam 3 extend upward (Z direction) and constrain the counterweight 5 from both sides in the Y direction like two guardrails, effectively preventing the counterweight 5 from sliding laterally or overturning during the test (especially under the conditions of curves or slopes).

[0032] 4. Test execution: After the support frame and counterweight are installed, the tunnel boring machine translation trolley 2 can be started to conduct various load tests, such as forward, backward, turning, and ramp operation. Because the counterweight 5 is firmly confined within the space formed by the I-beam 3, limit support 6, threaded steel 7, and diagonal brace 8, the load distribution remains stable, thus ensuring the accuracy of the test data and completely eliminating the safety risks caused by counterweight movement or overturning.

[0033] 5. Disassembly and storage: After the test, the disassembly process is the reverse of the installation process. First, remove the counterweight 5, then remove the threaded steel 7, and finally use a crane to lift away each I-beam 3.

[0034] Because the bottom of the I-beam 3 is provided with I-beam legs 4, each I-beam 3 can be placed independently and stably on the ground in non-test conditions, which greatly facilitates storage and transportation and reflects the practicality of the design.

[0035] In summary, this utility model, through ingenious mechanical structure design, combines simple profile components into a fully functional positioning system, successfully solving the problems of unstable counterweight positioning, low efficiency, and significant safety hazards in traditional testing methods. Its working process is clear and easy to operate, making it highly suitable for on-site construction applications.

[0036] Finally, any aspects of this utility model not fully described herein utilize existing mature products and technologies.

[0037] 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 test counterweight positioning bracket for a shield tunneling translation trolley, the positioning bracket being erected on the frame beams on both sides of the shield tunneling translation trolley, defining the forward and backward directions of the shield tunneling translation trolley as the X-axis, the lateral directions as the Y-axis, and the vertical direction as the Z-axis, characterized in that: The positioning bracket includes multiple I-beams and threaded steel bars connecting the multiple I-beams in the X direction; the I-beams are arranged at intervals in the X direction and span across the shield translation trolley in the Y direction, and fixing rings with inserted threaded steel bars are fixed on both sides of the I-beams in the Y direction, and the counterweight is supported by multiple I-beams.

2. The test counterweight positioning bracket for a shield tunneling translation trolley according to claim 1, characterized in that: Both sides of the bottom surface of the I-beam are fixed with diagonal bracing supports, which are used to support the edge of the frame beam of the shield translation trolley to limit and support the I-beam in the Y direction on the shield translation trolley.

3. The test counterweight positioning bracket for a shield tunneling translation trolley according to claim 2, characterized in that: Multiple I-beam legs are fixed in the middle of the bottom surface of the I-beam for placing the I-beam on a horizontal ground in a non-test state.

4. The test counterweight positioning bracket for a shield tunneling translation trolley according to claim 1, characterized in that: Both sides of the top surface of the I-beam are fixed with Z-direction extending limiting supports to limit the Y-direction sliding of the counterweight placed on the I-beam.

5. The test counterweight positioning bracket for a shield tunneling translation trolley according to claim 1, characterized in that: The fixed ring serves as the connection point for the lifting lug and the threaded steel. During the lifting process, the crane hook is installed on the fixed ring, and during the test, the positioning threaded steel is inserted into the fixed ring.

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