Non-destructive testing auxiliary trolley for tunnel lining without laying rails

Abstract

The utility model relates to the technical field of rail detection, and discloses a tunnel lining nondestructive testing auxiliary trolley without laying rails, which comprises a trolley main body, moving wheels, a mounting rod, a detection rod, a placing frame and the like. A walking mechanism adapting to the tunnel environment is designed at the bottom of the trolley and can stably move in the middle of a track, and meanwhile damage to a track plate is avoided. In order to meet the detection requirement of the geological radar, a special radar support and an adjusting device are carried on the detection auxiliary trolley. The devices can ensure that the geological radar keeps stable posture and height in the detection process, so that an accurate detection result is obtained, adaptive adjustment can be carried out according to the actual use condition when needed, and the device is suitable for various complex conditions. Meanwhile, the design of the trolley also considers the requirements of easy maintenance and operation, so that the detection work can be carried out more efficiently.

Description

Technical Field

[0001] This utility model relates to the field of track inspection technology, specifically to an auxiliary trolley for non-destructive testing of tunnel linings without laid rails. Background Technology

[0002] Tunnel lining, as a crucial structure in tunnel engineering, directly impacts the project's construction quality and the safety of people and property. Therefore, reliable testing methods are essential. Non-destructive testing (NDT), as a non-destructive testing technique, can effectively assess the internal quality of the lining without damaging its structure. This includes detecting defects such as cracks, voids, gaps, and insufficient thickness within the lining, ensuring the overall structural stability of the lining and its ability to withstand design loads without failure. This is crucial for guaranteeing the safety and durability of tunnel projects. The application of NDT in tunnel engineering also lies in the continuous monitoring and evaluation of the tunnel's structural condition. Regular or irregular NDT testing of the tunnel lining allows for monitoring changes in the tunnel structure, providing a reliable basis for assessing safety levels, determining operational conditions, and developing maintenance plans. This is of great significance for ensuring the long-term safe operation of tunnels.

[0003] Due to the high height of the tunnel lining, auxiliary trolleys are needed for non-destructive testing of the tunnel. Before the construction of ballastless track, there are many auxiliary facilities to choose from. However, after the track slabs of the ballastless track are constructed, the environment inside the tunnel is complex, and it is necessary to avoid damaging the track slabs. Therefore, conventional auxiliary trolleys for testing cannot be used, which brings certain difficulties to the non-destructive testing of the tunnel lining. Utility Model Content

[0004] The technical problem solved by this utility model is: after the construction of the track slab of the ballastless track, the environment inside the tunnel is complex and it is necessary to avoid damage to the track slab. Therefore, conventional auxiliary trolleys for testing cannot be used.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] An auxiliary trolley for non-destructive testing of tunnel lining without laid rails includes:

[0007] Main body of the trolley;

[0008] The movable wheels are located at the bottom of the trolley body;

[0009] The mounting rod is fixedly mounted on the trolley body, and a mounting seat is provided at the end of the mounting rod away from the trolley body;

[0010] A detection rod, the middle part of which is rotatably connected to the mounting base;

[0011] A placement rack is fixedly mounted on one end of the detection rod.

[0012] In one embodiment of this utility model: the trolley body includes a base frame and a top frame, and the top frame and the base frame are fixedly connected by a support frame.

[0013] In one embodiment of this utility model, the size of the top frame is smaller than the size of the base frame.

[0014] In one embodiment of this utility model: the support frame includes a support vertical rod and a support horizontal rod, the two ends of the support vertical rod are respectively fixedly connected to the top frame and the bottom frame, and the two ends of the support horizontal rod are respectively fixedly connected to the corresponding support vertical rod.

[0015] In one embodiment of this utility model, a ladder structure is fixedly provided on the side of the trolley body.

[0016] In one embodiment of this utility model: a sleeve is fixedly connected to the mounting base, and the sleeve is movably sleeved on the mounting rod.

[0017] In one embodiment of this utility model, the number of mounting rods is three, which are respectively arranged on both sides and the center of the trolley body.

[0018] In one embodiment of this utility model: the placement rack includes a receiving frame and a connecting rod, the connecting rod is rotatably connected to the receiving frame, and a telescopic rod is also provided between the connecting rod and the receiving frame, with both ends of the telescopic rod being rotatably connected to the connecting rod and the receiving frame, respectively.

[0019] In one embodiment of this utility model: an adjustment seat is provided between the detection rod and the placement frame, and the adjustment seat is rotatably connected to the connecting rod.

[0020] In one embodiment of this utility model, the side of the trolley body is also provided with limit wheels.

[0021] The auxiliary trolley for non-destructive testing of tunnel lining without laid rails according to this utility model has at least one of the following technical effects:

[0022] This auxiliary trolley is applicable to tunnels with existing track slabs but no laid rails for non-destructive testing. It provides an effective auxiliary means for tunnel non-destructive testing, particularly in tunnels with existing ballastless track slabs but no laid rails, significantly improving testing efficiency and accuracy. The auxiliary trolley has a simple structure, is easy to fabricate on-site using readily available materials, and allows for full utilization of construction materials. Furthermore, the auxiliary testing trolley has a robust structure, adaptable to the complex environment within tunnels, ensuring stable operation during testing. The trolley's bottom is designed with a walking mechanism adapted to the tunnel environment, enabling smooth movement within the track while avoiding damage to the track slabs. To meet the testing requirements of ground-penetrating radar, the auxiliary testing trolley is equipped with a dedicated radar support (mounting rod, mounting base, testing rod) and adjustment devices (telescopic rod, adjustment base). These devices ensure the ground-penetrating radar maintains a stable posture and height during testing, thereby obtaining accurate test results. They can also be adaptively adjusted according to actual usage conditions, making it suitable for various complex situations. At the same time, the design of the trolley also takes into account the need for easy maintenance and operation, making the testing work more efficient.

[0023] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0024] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood in conjunction with the following description of the embodiments with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this utility model, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort. Wherein:

[0025] Figure 1 This is a schematic diagram of the overall structure of an auxiliary trolley for non-destructive testing of tunnel lining without laid rails, according to this utility model.

[0026] Figure 2 This is a schematic diagram of the structure of the auxiliary trolley for non-destructive testing of tunnel lining without railway tracks, showing the connection between the testing rod and the placement frame.

[0027] Figure 3 This is a schematic diagram of the structure of an auxiliary trolley mounting base for non-destructive testing of tunnel lining without laid rails, according to this utility model.

[0028] The attached diagram is labeled as follows: 1. Main body of the trolley; 2. Moving wheel; 3. Mounting rod; 4. Mounting seat; 5. Detection rod; 6. Climbing structure; 7. Receiving frame; 8. Connecting rod; 9. Telescopic rod; 10. Adjusting seat; 11. Limiting wheel. Detailed implementation manners

[0029] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are only a part rather than all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0030] Please refer to Figure 1-3 , the present utility model is an auxiliary trolley for non-destructive detection of tunnel lining without laid railway tracks, including a trolley main body 1, moving wheels 2, mounting rods 3, detection rods 5, a placement rack, etc. Among them, the trolley main body 1 may include a bottom frame and a top frame. The bottom frame and the top frame may be fixedly connected and enclosed by four steel pipes to form a frame shape. The bottom frame may be provided with a steel pipe in the middle to form a "day" shaped structure to ensure the strength and stability of the bottom frame. The top frame and the bottom frame are fixedly connected by a support frame. And the size of the top frame may be smaller than that of the bottom frame. Thus, the trolley main body 1 forms a stable structure with a smaller upper part and a larger lower part. Further, the support frame may include support vertical rods and support horizontal rods. The two ends of the support vertical rods are respectively fixedly connected to the top frame and the bottom frame, and the two ends of the support horizontal rods are respectively fixedly connected to the corresponding support vertical rods to enhance the strength and stability of the entire support frame. Among them, the support vertical rods may be selected as steel pipes for fixedly supporting the top frame. The connection ends of the support vertical rods may be located at the corner positions of the bottom frame and the top frame. The support horizontal rods may be selected as steel bars. Specifically, three steel bars may be arranged from top to bottom between two adjacent support vertical rods to enhance stability. The fixed connection of the entire trolley main body 1 may be achieved by welding. The selected steel pipes and steel bars are all common materials at the construction site, and materials can be directly obtained on site, which is convenient for manufacturing. Some shorter steel bars can also use the remaining materials on site to achieve the full utilization of materials. Further, a ladder structure 6 may be fixedly provided on the side of the trolley main body 1. The ladder structure 6 may be formed by fixedly connecting steel bars with the support frame. It is convenient to climb to the top of the trolley main body 1 for disassembly.

[0031] Please refer to Figure 1-3In one embodiment of this utility model, the movable wheel 2 is disposed at the bottom of the trolley body 1 to facilitate the movement of the entire trolley body 1; the movable wheel 2 can be configured as a universal wheel structure to facilitate the convenient movement of the trolley body 1. Furthermore, a brake structure can be provided at the location of the movable wheel 2, which can lock the movable wheel 2 when needed. A limit wheel 11 is also provided on the side of the trolley body 1. The roller of the limit wheel 11 is arranged laterally, and its outer circular surface can be used to contact the side wall and step surface, playing a guiding and limiting role, ensuring the stability and convenience of the movement of the entire trolley body 1. The structure of the movable wheel 2 and the limit wheel 11 may include a wheel seat fixedly connected to the trolley body 1 and a wheel body rotatably disposed on the wheel seat.

[0032] Please see Figure 1-3 In one embodiment of this utility model, the mounting rod 3 is fixedly mounted on the trolley body 1. Specifically, the mounting rod 3 is fixedly mounted on the top of the trolley body 1. Preferably, there are three mounting rods 3, respectively located on both sides and the center of the trolley body 1. The mounting rods 3 on both sides are used to detect the tunnel positions on both sides, while the mounting rod 3 in the middle can be used to detect the top wall of the middle of the tunnel. The mounting rod 3 can be made of steel pipe. The connection between the mounting rod 3 and the trolley body 1 can be achieved through steel pipes, cross-shaped fasteners, or other methods such as welding.

[0033] Please see Figure 1-3 In one embodiment of this utility model, a mounting base 4 is provided at the end of the mounting rod 3 away from the trolley body 1. The mounting base 4 is used to connect with the detection rod 5. The middle part of the detection rod 5 is rotatably connected to the mounting base 4. The specific form of the rotatable connection is not limited. As an example, the mounting base 4 includes two oppositely arranged side plates, and a rotating shaft (which can be a bolt structure that is easy to disassemble and assemble) is provided between the two side plates. An adapter cylinder is fixedly provided at the middle part of the detection rod 5. The adapter cylinder is used to be placed between the two side plates and sleeved on the rotating shaft, thereby realizing the rotatable connection between the mounting base 4 and the detection rod 5. Further, a sleeve can be fixedly connected to the bottom of the mounting base 4. The sleeve is movably sleeved on the mounting rod 3. In this way, the mounting base 4 (detection rod 5 and the detection equipment on it) can rotate freely around the mounting rod 3, which is convenient for adjustment. The sleeve is movably sleeved on the mounting rod 3, which also facilitates the transfer of different mounting rods 3. The detection rod 5 can be made of steel pipe, and its front end (the end closest to the placement frame) can be made of square tube to obtain higher bending strength and avoid bending deformation. The rear end can be made of round tube to reduce the weight of the rear end and make it easier to hold and operate.

[0034] Please see Figure 1-3 In one embodiment of this utility model, the placement frame is fixedly disposed at one end of the detection rod 5 for placing equipment used to inspect tunnels. The placement frame may include a receiving frame 7 and a connecting rod 8, the connecting rod 8 being rotatably connected to the receiving frame 7. A telescopic rod 9 is also provided between the connecting rod 8 and the receiving frame 7, with both ends of the telescopic rod 9 being rotatably connected to the connecting rod 8 and the receiving frame 7, respectively. This allows the receiving frame 7 to move in the front-back direction of the detection rod 5 (…). Figure 2 The telescopic rod 9 can be adjusted at a certain angle according to actual usage (left and right directions). The specific structure of the telescopic rod 9 can be a multi-section nested telescopic rod 9, an eccentric locking telescopic rod 9, a screw-fixed telescopic rod 9, a spring-type telescopic rod 9, a spiral telescopic rod 9, or other telescopic structures, such as sliding telescopic, hinged telescopic, spiral telescopic, scissor telescopic, etc. Furthermore, an adjusting seat 10 is provided between the detection rod 5 and the placement frame (connecting rod 8), and the adjusting seat 10 is rotatably connected to the connecting rod 8. The adjusting seat 10 allows the placement frame to be adjusted in the lateral direction of the detection rod 5 (left and right directions). Figure 2 The angle of the adjustment seat 10 can be adjusted to a certain degree in the direction perpendicular to the paper surface, which facilitates practical use. The adjustment seat 10 can be fixed by setting a fastener, such as a screw, to lock the adjusted angle position.

[0035] The working principle of this utility model:

[0036] In use, the testing equipment is placed and fixed within the receiving frame 7 of the placement rack. The middle part of the testing rod 5 is rotatably connected to the mounting base 4, allowing the testing equipment to be lifted to the tunnel wall via a lever for non-destructive testing of the tunnel. This auxiliary trolley is applicable to tunnels with existing track slabs but no laid rails for non-destructive testing. The auxiliary trolley in this application provides an effective auxiliary means for tunnel non-destructive testing, especially in tunnels with existing ballastless track slabs but no laid rails, significantly improving testing efficiency and accuracy. The auxiliary trolley has a simple structure and is easily fabricated on-site using readily available materials, maximizing the use of construction materials. Furthermore, the auxiliary testing trolley has a stable structure, adapting to the complex environment within the tunnel and ensuring stable operation during testing. The bottom of the trolley is designed with a walking mechanism adapted to the tunnel environment, enabling smooth movement within the track while avoiding damage to the track slabs. To meet the detection requirements of ground-penetrating radar (GPR), the auxiliary detection trolley is equipped with a dedicated radar bracket (mounting rod 3, mounting base 4, detection rod 5) and adjustment devices (telescopic rod 9, adjustment base 10). These devices ensure that the GPR maintains a stable attitude and height during the detection process, thereby obtaining accurate detection results. They can also be adaptively adjusted according to actual usage conditions, making them suitable for various complex situations. Simultaneously, the trolley's design also considers ease of maintenance and operation, enabling more efficient detection work. The auxiliary trolley in this application provides an effective auxiliary means for non-destructive testing of tunnels, especially in tunnels where ballastless track slabs have been constructed but railway tracks have not yet been laid, significantly improving detection efficiency and accuracy.

[0037] The foregoing has provided a detailed description of one embodiment of the present invention, but the description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the scope of the claims of the present invention.

[0038] In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0039] In the description of this utility model, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0040] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A non-destructive testing trolley for use in tunnel lining of un-laid tracks, characterized in that, include: Main body of the trolley; The movable wheels are located at the bottom of the trolley body; The mounting rod is fixedly mounted on the trolley body, and a mounting seat is provided at the end of the mounting rod away from the trolley body; A detection rod, the middle part of which is rotatably connected to the mounting base; A placement frame is fixedly mounted on one end of the detection rod.

2. The auxiliary trolley for non-destructive testing of tunnel lining without laid rails as described in claim 1, characterized in that, The trolley body includes a base frame and a top frame, which are fixedly connected by a support frame.

3. A non-destructive testing trolley for tunnel lining of un-laid tracks according to claim 2, characterized in that, The dimensions of the top frame are smaller than the dimensions of the base frame.

4. The auxiliary trolley for non-destructive testing of tunnel lining without laid rails as described in claim 3, characterized in that, The support frame includes vertical support rods and horizontal support rods. The two ends of the vertical support rods are fixedly connected to the top frame and the bottom frame, respectively, and the two ends of the horizontal support rods are fixedly connected to the corresponding vertical support rods.

5. A non-destructive testing trolley for tunnel lining of un-laid tracks according to claim 4, characterized in that, A ladder structure is fixedly installed on the side of the trolley body.

6. A non-destructive testing trolley for tunnel lining of un-laid tracks according to claim 5, characterized in that, A sleeve is fixedly connected to the mounting base, and the sleeve is movably fitted onto the mounting rod.

7. The auxiliary trolley for non-destructive testing of tunnel lining without laid rails as described in claim 6, characterized in that, The number of mounting rods is three, which are respectively set on both sides and the center of the trolley body.

8. The auxiliary trolley for non-destructive testing of tunnel lining without laid rails as described in claim 7, characterized in that, The placement rack includes a receiving frame and a connecting rod. The connecting rod is rotatably connected to the receiving frame. A telescopic rod is also provided between the connecting rod and the receiving frame. The two ends of the telescopic rod are rotatably connected to the connecting rod and the receiving frame, respectively.

9. An auxiliary trolley for non-destructive testing of tunnel lining without laid rails, as described in claim 8, is characterized in that... An adjustment seat is provided between the detection rod and the placement frame, and the adjustment seat is rotatably connected to the connecting rod.

10. The non-destructive testing trolley for tunnel lining of un-laid tracks as claimed in claim 1 wherein, The trolley body is also equipped with limit wheels on its side.

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