A tunnel seismic performance detection system

Abstract

The present invention relates to the technical field of tunnel seismic performance detection and analysis, and specifically to a tunnel seismic performance detection system, wherein a reeling mechanism is installed on a first connecting seat, one end of a pull rope is reeled on the reeling mechanism, and the other end of the pull rope is fixedly connected to a second connecting seat. The reeling mechanism has a metering module for determining the release length of the pull rope, and the reeling mechanism is also provided with a force-applying component for continuously applying tension to the pull rope so that the pull rope is always in a taut state. The temperature detection mechanism is used to detect the temperature of the pull rope. The data center is used to determine the relative motion relationship between the various mechanical components of the tunnel model during the vibration process based on the release length. The data center is also used to control the lubrication mechanism to apply lubricant to the pull rope when the temperature detected by the temperature detection mechanism is greater than or equal to the temperature threshold. It can better show the actual performance of the mechanical components in the tunnel model during the vibration process, and can provide a reference for the targeted optimization of the tunnel scheme.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel seismic performance detection and analysis, and in particular to a tunnel seismic performance detection system. Background Art

[0002] In tunnel seismic performance testing and analysis, laboratory analysis is often used. During vibration testing, the tunnel model, which has undergone vibration, is often tested and analyzed after the entire vibration process to obtain the actual seismic performance analysis results of the tunnel model. This method is only result-oriented and cannot intuitively restore the actual performance of the various mechanical components of the tunnel model during the vibration. It cannot more accurately understand the actual performance of each mechanical component in ensuring the seismic performance of the tunnel model, which is not conducive to the targeted optimization of tunnel design solutions.

[0003] In view of this, this application is hereby filed. Summary of the Invention

[0004] The purpose of the present invention is to provide a tunnel seismic performance detection system, which can better demonstrate the actual performance of the mechanical components in the tunnel model during the vibration process, facilitate more accurate grasp of the actual performance of each mechanical component in ensuring the seismic performance of the tunnel model, and provide a reference for the targeted optimization of the tunnel scheme.

[0005] The embodiment of the present invention is achieved as follows:

[0006] A tunnel seismic performance detection system comprises: a first connecting seat, a second connecting seat, a winding mechanism, a pull rope, a first limiting ring, a second limiting ring, a lubrication mechanism, a temperature detection mechanism and a data center.

[0007] The first connecting seat is used for fixed connection with a mechanical component of the tunnel model, and the second connecting seat is used for fixed connection with another mechanical component of the tunnel model.

[0008] The first limiting ring, the second limiting ring and the lubricating mechanism are all fixedly mounted on the first connecting seat. The first limiting ring and the second limiting ring are coaxially spaced apart, and the lubricating mechanism is arranged between the first limiting ring and the second limiting ring.

[0009] The winding mechanism is installed on the first connecting seat, one end of the pull rope is wound on the winding mechanism, and the other end of the pull rope passes through the second limiting ring and the first limiting ring in sequence and is fixedly connected to the second connecting seat.

[0010] The winding mechanism has a metering module for determining the release length of the pull rope. The winding mechanism is also provided with a force-applying component for continuously applying tension to the pull rope so that the pull rope is always in a taut state.

[0011] The temperature detection mechanism is used to detect the temperature of the pull rope.

[0012] The metering module and temperature detection mechanism are both electrically connected to the data center. The data center is used to determine the relative motion relationship between the various mechanical components of the tunnel model during vibration based on the release length. The data center is also used to control the lubrication mechanism to apply lubricant to the pull rope when the temperature detected by the temperature detection mechanism is greater than or equal to a temperature threshold.

[0013] Furthermore, the lubrication mechanism includes: a reference ring, a positioning ring, a rotating sleeve, a swing arm and a connecting arm.

[0014] The reference ring has an annular inner cavity in which lubricant is contained. The inner ring wall of the reference ring is provided with a notch which is in communication with the annular inner cavity.

[0015] The positioning ring is arranged inside the reference ring and coaxially with the reference ring. The outer diameter of the positioning ring is smaller than the inner diameter of the reference ring.

[0016] The rotating sleeve is rotatably sleeved on the positioning ring, the rotating axis of the rotating sleeve is perpendicular to the central axis of the positioning ring, and a plurality of rotating sleeves are spaced apart along the circumference of the positioning ring.

[0017] One end of the swing arm is hinged to the rotating sleeve. Along the circumference of the positioning ring, the connecting arm is connected between the swing arms of two adjacent rotating sleeves. The end of the connecting arm is hinged to the end of the swing arm away from the rotating sleeve, so that when one rotating sleeve rotates, the rotating sleeve can drive the other rotating sleeve to rotate synchronously through the swing arm and the connecting arm.

[0018] The swing arm has a first swing point and a second swing point. When the hinge point between the swing arm and the connecting arm moves to the side of the positioning ring away from its central axis, the two swing arms connected to the same connecting arm swing toward each other, and the swing arm is at the first swing point. When the hinge point between the swing arm and the connecting arm moves to the side of the positioning ring closer to its central axis, the two swing arms connected to the same connecting arm swing toward each other, and the swing arm is at the second swing point.

[0019] The outer side wall of the rotating sleeve is fixedly connected with a suction bag, and the swing arm is connected with the extrusion part of the suction bag. The suction bag has a suction port and a discharge port, and both the suction port and the discharge port are provided with a one-way valve.

[0020] A coating nozzle is fixedly connected to one side of the connecting arm away from the positioning ring, and the discharge port of the suction bag is communicated with the inlet of the coating nozzle.

[0021] The drawstring passes through the positioning ring. When the swing arm is at the first swing point, the suction port of the suction bag extends to the notch. When the swing arm is at the second swing point, the coating nozzle faces the drawstring.

[0022] When the temperature detected by the temperature detection mechanism is greater than or equal to the temperature threshold, the data center is used to control the rotation of the rotating sleeve to make the swing arm move between the first swing point and the second swing point.

[0023] Furthermore, the rotation axis of the swing arm is perpendicular to the rotation axis of the rotating sleeve, and the swing arm is arranged perpendicular to the rotation axis.

[0024] An extension arm is fixedly connected to one end of the swing arm away from the rotating sleeve. The extension arm is arranged perpendicular to the swing arm and extends toward a side close to the positioning ring.

[0025] Both ends of the connecting arm are provided with a bent portion bent toward a side away from the positioning ring, and the bent portion is hinged to an end of the extension arm away from the swing arm.

[0026] Furthermore, when the swing arm is located at the first swing point, the distance between the suction port and the positioning ring is greater than the distance between the coating nozzle and the positioning ring.

[0027] Furthermore, the suction bag includes: a first baffle, a second baffle, a suction pipe, a bag body and a discharge pipe.

[0028] The first baffle is fixedly connected to the rotating sleeve, the second baffle is fixedly connected to the swing arm, and the capsule is connected between the first baffle and the second baffle.

[0029] The suction pipe is made of hard material, one end of the suction pipe is fixedly connected to the rotating sleeve, and the other end passes through the capsule and extends to the side of the capsule away from the positioning ring. The capsule and the suction pipe are sealed.

[0030] The side wall of the suction pipe is provided with a side opening, which is located in the capsule. The discharge pipe connects the capsule and the coating nozzle. One-way valves are arranged at the inlet of the suction pipe and the outlet of the discharge pipe.

[0031] Furthermore, the width of the notch is adapted to the outer diameter of the suction pipe.

[0032] Furthermore, the drawstring is a low-elasticity rope.

[0033] Furthermore, the inner diameter of the first limiting ring is adapted to the outer diameter of the pull rope.

[0034] The beneficial effects of the technical solutions of the embodiments of the present invention include:

[0035] Before conducting a vibration test on the tunnel model, a first connecting seat and a second connecting seat can be set between the mechanical components of the tunnel model as needed, and the relative displacement relationship between the various mechanical components of the tunnel model during the vibration process can be determined based on the change in the release length of the pull rope during the vibration process, so as to understand the actual vibration performance of the various structural components of the tunnel model during the vibration process.

[0036] In addition, the data center is also configured to control the lubrication mechanism to apply lubricant to the drawstring when the temperature detected by the temperature detection mechanism is greater than or equal to a temperature threshold. For drawstrings with a constant or minimal change in release length, the drawstring's retraction and extension are small, resulting in relatively little friction between the drawstring and other components and less frictional heat generation, which will not adversely affect the drawstring's mechanical properties. However, for drawstrings with a longer release length, the drawstring's retraction and extension are large, leading to greater friction between the drawstring and other components and more frictional heat generation. The actual heat generation can be determined by detecting the temperature at the drawstring. When the drawstring temperature rises significantly (greater than or equal to the temperature threshold), it may adversely affect the drawstring's mechanical properties, affecting its ductility and, in severe cases, causing it to break. By controlling the lubrication mechanism to apply lubricant to the drawstring, mechanical friction can be effectively alleviated, significantly reducing frictional heat generation and preventing damage to the drawstring.

[0037] In general, the tunnel seismic performance detection system provided by the embodiment of the present invention can better demonstrate the actual performance of the mechanical components in the tunnel model during the vibration process, facilitate more accurate grasp of the actual performance of each mechanical component in ensuring the seismic performance of the tunnel model, and provide a reference for the targeted optimization of the tunnel scheme. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0039] Figure 1 A schematic diagram of the overall structure of a tunnel seismic performance testing system provided by an embodiment of the present invention;

[0040] Figure 2 Schematic diagram of the lubrication mechanism;

[0041] Figure 3 This is a schematic diagram of the tunnel seismic performance testing system installed on the tunnel's supporting components;

[0042] Figure 4 Schematic diagram of the coordination between the positioning ring and the reference ring (the swing arm is located at the first swing point);

[0043] Figure 5 for Figure 4 Schematic diagram of the swing arm in the state of ;

[0044] Figure 6 Schematic diagram of the coordination between the positioning ring and the reference ring (the swing arm is located at the second swing point);

[0045] Figure 7 for Figure 6 Schematic diagram of the swing arm in the state of ;

[0046] Figure 8 It is a structural schematic diagram of the rotating sleeve;

[0047] Figure 9 Schematic diagram of the cooperation between the first convex ring and the second convex ring.

[0048] Description of reference numerals:

[0049] First connecting seat 100; second connecting seat 200; winding mechanism 300; pull rope 310; first limiting ring 320; second limiting ring 330; lubricating mechanism 400; reference ring 410; annular inner cavity 411; notch 412; matching ring 413; positioning ring 420; rotating sleeve 430; swing arm 431; extension arm 432; connecting arm 433; bending portion 434; suction bag 500; first baffle 510; second baffle 520; suction tube 530; bag body 540; coating nozzle 600; first convex ring 710; second convex ring 720. DETAILED DESCRIPTION

[0050] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0051] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0052] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0053] The terms “first”, “second”, etc. are only used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0054] Furthermore, the terms "parallel" and "perpendicular" do not necessarily mean that the components must be absolutely parallel or perpendicular, but rather that they can be slightly tilted. For example, "parallel" simply means that the direction is more parallel than "perpendicular," not that the structure must be completely parallel, but rather that it can be slightly tilted.

[0055] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," and "connected" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0056] In order to overcome the shortcomings of the existing technology, please refer to Figure 1 and Figure 2 This embodiment provides a tunnel seismic performance detection system, which can be used to perform auxiliary tests on the seismic performance of tunnel models in the laboratory stage to improve the control accuracy of the actual seismic performance of the tunnel model.

[0057] The tunnel seismic performance testing system includes: a first connecting seat 100, a second connecting seat 200, a winding mechanism 300, a pull rope 310, a first limiting ring 320, a second limiting ring 330, a lubrication mechanism 400, a temperature detection mechanism (not shown in the figure) and a data center (not shown in the figure).

[0058] The first connecting seat 100 is used for fixed connection with a mechanical component of the tunnel model, and the second connecting seat 200 is used for fixed connection with another mechanical component of the tunnel model.

[0059] In this embodiment, the first connection base 100 has an installation cavity, and the first limiting ring 320, the second limiting ring 330 and the lubricating mechanism 400 are all fixedly installed in the installation cavity of the first connection base 100. The first connection base 100 has an opening for connecting the installation cavity with the outside.

[0060] The opening, the first limiting ring 320 and the second limiting ring 330 are coaxially spaced apart, with the first limiting ring 320 located on the side of the second limiting ring 330 closer to the opening. The lubricating mechanism 400 is provided between the first limiting ring 320 and the second limiting ring 330 to apply lubricant to the pull rope 310.

[0061] The winding mechanism 300 is installed in the installation inner cavity of the first connecting seat 100, one end of the pull rope 310 is wound on the winding mechanism 300, and the other end of the pull rope 310 passes through the second limiting ring 330, the first limiting ring 320 and the opening in sequence and is fixedly connected to the second connecting seat 200.

[0062] The reeling mechanism 300 includes a metering module (not shown) for determining the released length of the drawstring 310. The reeling mechanism 300 also includes a force-applying component (not shown) for continuously applying tension to the drawstring 310, ensuring that the reeling mechanism 300 consistently tends to retract the drawstring 310, keeping the drawstring 310 taut. The force-applying component can be implemented by configuring a coil spring for the reeling wheel of the drawstring 310, but is not limited thereto.

[0063] The temperature detection mechanism is used to detect the temperature of the pull rope 310 .

[0064] The metering module and the temperature detection mechanism are both electrically connected to the data center.

[0065] The data center is used to determine the movement between the two mechanical components connecting the first connecting seat 100 and the second connecting seat 200 based on the release length. If the release length of the pull rope 310 remains unchanged, it means that there is no relative displacement between the two mechanical components (at least between the connecting parts of the first connecting seat 100 and the second connecting seat 200). If the release length of the pull rope 310 increases, it means that the two mechanical components (at least between the connecting parts of the first connecting seat 100 and the second connecting seat 200) are moving away from each other. If the release length of the pull rope 310 decreases, it means that the two mechanical components (at least between the connecting parts of the first connecting seat 100 and the second connecting seat 200) are moving closer to each other.

[0066] In this way, before conducting a vibration test on the tunnel model, the first connecting seat 100 and the second connecting seat 200 can be set between the mechanical components of the tunnel model as needed, and the relative displacement relationship between the various mechanical components of the tunnel model during the vibration process can be determined based on the change in the release length of the pull rope 310 during the vibration process, so as to understand the actual vibration performance of the various structural components of the tunnel model during the vibration process.

[0067] This design can better demonstrate the actual performance of the mechanical components in the tunnel model during vibration, facilitate a more accurate understanding of the actual performance of each mechanical component in ensuring the seismic performance of the tunnel model, and provide a reference for the targeted optimization of the tunnel scheme.

[0068] Furthermore, the data center is configured to control the lubrication mechanism 400 to apply lubricant to the cord 310 when the temperature detected by the temperature detection mechanism is greater than or equal to a temperature threshold. If the released length of the cord 310 remains constant or changes only slightly, the amount of retraction and extension of the cord 310 is small, resulting in relatively little friction between the cord 310 and other components, and thus less frictional heat generation, which does not adversely affect the mechanical properties of the cord 310. However, if the released length of the cord 310 is longer, the amount of retraction and extension of the cord 310 is greater, resulting in greater friction between the cord 310 and other components, and thus more frictional heat generation. The actual amount of heat generation can be determined by detecting the temperature at the cord 310. If the temperature of the cord 310 rises significantly (greater than or equal to the temperature threshold), it may adversely affect the mechanical properties of the cord 310, affecting its ductility and, in severe cases, causing it to break. Controlling the lubrication mechanism 400 to apply lubricant to the cord 310 effectively mitigates mechanical friction, significantly reduces frictional heat generation, and prevents damage to the cord 310.

[0069] Through this design, the lubricant can be applied to the pull rope 310 in a targeted manner, which not only ensures the detection accuracy but also makes the amount of lubricant used more reasonable and more environmentally friendly.

[0070] As an example, the tunnel seismic performance detection system can be installed between different parts of a tunnel scale model, a tunnel full-scale model, or a supporting structure of a physical tunnel, but is not limited thereto. Figure 3 As shown, the tunnel seismic performance detection system can be installed between different parts of the supporting structure to detect whether there is offset or shaking between the different parts of the supporting structure.

[0071] Optionally, the drawstring 310 is a low-elasticity rope. The inner diameter of the first limiting ring 320 matches the outer diameter of the drawstring 310, while the inner diameter of the second limiting ring 330 is slightly larger than the outer diameter of the drawstring 310. The first limiting ring 320 and the second limiting ring 330 can limit the drawstring 310, ensuring that the drawstring 310 remains stable when passing through the lubrication mechanism 400. The friction between the first limiting ring 320 and the second limiting ring 330 and the drawstring 310 is primarily caused by friction.

[0072] In this embodiment, please combine Figures 1-8 The lubrication mechanism 400 includes: a reference ring 410 , a positioning ring 420 , a rotating sleeve 430 , a swing arm 431 and a connecting arm 433 .

[0073] The first limiting ring 320, the second limiting ring 330 and the reference ring 410 are coaxially arranged;

[0074] The reference ring 410 has an annular inner cavity 411 , in which lubricant is contained. An inner ring wall of the reference ring 410 is provided with a notch 412 communicating with the annular inner cavity 411 .

[0075] The positioning ring 420 is disposed inside the reference ring 410 and is coaxial with the reference ring 410. The outer diameter of the positioning ring 420 is smaller than the inner diameter of the reference ring 410. The pull rope 310 passes through the positioning ring 420.

[0076] The rotating sleeve 430 is rotatably mounted on the positioning ring 420. The rotation axis of the rotating sleeve 430 is perpendicular to the central axis of the positioning ring 420. Multiple rotating sleeves 430 are evenly spaced along the circumference of the positioning ring 420. The specific number of rotating sleeves 430 can be flexibly set according to actual needs.

[0077] One end of the swing arm 431 is hinged to the rotating sleeve 430. Along the circumference of the positioning ring 420, the connecting arm 433 is connected between the swing arms 431 of two adjacent rotating sleeves 430. The end of the connecting arm 433 is hinged to the end of the swing arm 431 away from the rotating sleeve 430, so that when one rotating sleeve 430 rotates, the rotating sleeve 430 can drive the other rotating sleeve 430 to rotate synchronously through the swing arm 431 and the connecting arm 433.

[0078] The swing arm 431 has a first swing point and a second swing point.

[0079] As the rotating sleeve 430 rotates, the position of the swing arm 431 changes along with the rotating sleeve 430. When the hinge point between the swing arm 431 and the connecting arm 433 moves to the side of the positioning ring 420 away from the central axis thereof, the two swing arms 431 connected to the corresponding connecting arm 433 swing to the opposite side, that is, the ends of the two swing arms 431 away from the rotating sleeve 430 swing toward the opposite side and get closer. At this time, the swing arms 431 are at the first swing point position, as shown in FIG. Figure 4 and Figure 5 shown.

[0080] When the hinge point of the swing arm 431 and the connecting arm 433 moves to the side of the positioning ring 420 close to the central axis thereof, the two swing arms 431 connected to the corresponding connecting arm 433 swing to opposite sides, that is, the two swing arms 431 away from the end of the rotating sleeve 430 swing to the opposite side and the distance is farther. At this time, the swing arm 431 is at the second swing point position, such as Figure 6 and Figure 7 shown.

[0081] It should be noted that, in the present application, the swing arm 431 swinging toward the "facing side" refers to the swing arm 431 swinging a certain distance further toward the facing side relative to the previous state, which is a relative concept. Similarly, the swing arm 431 swinging toward the "opposite side" refers to the swing arm 431 swinging a certain distance further toward the opposite side relative to the previous state, which is also a relative concept.

[0082] The outer wall of the rotating sleeve 430 is fixedly connected to the suction bag 500, and the swing arm 431 is connected to the extrusion part of the suction bag 500. The suction bag 500 has a suction port and a discharge port, and both the suction port and the discharge port are provided with a one-way valve (not shown in the figure).

[0083] When the swing arm 431 moves from the second swing point to the first swing point, the swing arm 431 pulls the extrusion portion of the suction bag 500, so that the suction bag 500 is in a suction state. At this time, the one-way valve at the suction port of the suction bag 500 opens to open the suction port, and the one-way valve at the discharge port of the suction bag 500 closes to close the discharge port, so that the suction bag 500 can smoothly pass through the suction port for suction.

[0084] When the swing arm 431 moves from the first swing point to the second swing point, the swing arm 431 squeezes the squeezing portion of the suction bag 500, so that the suction bag 500 is in a discharge state. At this time, the one-way valve at the suction port of the suction bag 500 closes to seal the suction port, and the one-way valve at the discharge port of the suction bag 500 opens to open the discharge port, so that the suction bag 500 can be discharged smoothly through the discharge port.

[0085] A coating nozzle 600 is fixedly connected to a side of the connecting arm 433 away from the positioning ring 420 , and the discharge port of the suction capsule 500 is communicated with the inlet of the coating nozzle 600 .

[0086] When the swing arm 431 is at the first swing point, the suction port of the suction bag 500 is completely extended into the notch 412. When the swing arm 431 is at the second swing point, the coating nozzle 600 is directed toward the drawstring 310.

[0087] In this embodiment, the notch 412 extends in a strip shape along the axial direction of the reference ring 410 .

[0088] When the temperature detected by the temperature detection mechanism is greater than or equal to the temperature threshold, the data center is used to control the rotation of the rotating sleeve 430 to move the swing arm 431 between the first swing point and the second swing point.

[0089] When the swing arm 431 is at the first swing point, the hinge point between the swing arm 431 and the connecting arm 433 moves to the side of the positioning ring 420 away from the central axis thereof. At this point, the suction capsule 500 is also located on the side of the rotating sleeve 430 away from the central axis of the positioning ring 420, that is, on the side away from the drawstring 310. During the movement of the swing arm 431 from the second swing point to the first swing point, before the swing arm 431 fully reaches the first swing point, the suction port of the suction capsule 500 can smoothly engage with the notch 412 of the reference ring 410, thereby smoothly drawing the lubricant in the annular inner cavity 411 into the suction capsule 500.

[0090] When the swing arm 431 is at the second swing point, the hinge point between the swing arm 431 and the connecting arm 433 moves to the side of the positioning ring 420 close to its central axis. At this time, the suction capsule 500 is also located on the side of the rotating sleeve 430 close to the central axis of the positioning ring 420, that is, on the side close to the drawstring 310. During the movement of the swing arm 431 from the first swing point to the second swing point, the discharge port of the suction capsule 500 can smoothly deliver the lubricant in the suction capsule 500 to the coating nozzle 600, and the coating nozzle 600 can smoothly apply the lubricant to the surface of the drawstring 310.

[0091] In this embodiment, the position state of the suction bag 500 when the swing arm 431 is located at the first swing point is used as a reference. In this state, the discharge port of the suction bag 500 is located at the lower part of the suction bag 500, so that the lubricant sucked into the suction bag 500 can smoothly enter the discharge port.

[0092] It should be noted that when the swing arm 431 just starts to move from the second swing point to the first swing point, since the suction port of the suction bag 500 has not yet engaged with the notch 412, the suction bag 500 will first inhale some air. After the suction port of the suction bag 500 successfully engages with the notch 412 of the reference ring 410, the lubricant can be smoothly inhaled.

[0093] During the movement of the swing arm 431 from the first swing point to the second swing point, the lubricant is squeezed out from the coating nozzle 600 and coated on the surface of the drawstring 310. Since a certain amount of air is also absorbed in the suction bag 500, in the second half of the process of discharging the lubricant, the air in the suction bag 500 can fully blow out the lubricant in the coating nozzle 600. On the one hand, it reduces the residual lubricant in the coating nozzle 600 and the suction bag 500, and on the other hand, it helps to blow the lubricant toward the drawstring 310.

[0094] When the swing arm 431 reaches the second swing point, the coating nozzle 600 moves completely to the side of the positioning ring 420 close to its central axis. In this embodiment, in this state, the coating nozzle 600 is in contact with the surface of the pull rope 310, which can further avoid the loss of lubricant remaining at the edge of the coating nozzle 600 and fully lubricate the pull rope 310.

[0095] When the swing arm 431 moves to the first swing point, the coating nozzle 600 will be separated from the surface of the pull rope 310 again, which can effectively reduce the mechanical wear of the pull rope 310 and the coating nozzle 600.

[0096] In this embodiment, the rotation axis of the swing arm 431 is perpendicular to the rotation axis of the rotating sleeve 430 , and the swing arm 431 is disposed perpendicular to its own rotation axis.

[0097] An extension arm 432 is fixedly connected to one end of the swing arm 431 away from the rotating sleeve 430 . The extension arm 432 is arranged perpendicular to the swing arm 431 and extends toward a side close to the positioning ring 420 .

[0098] Both ends of the connecting arm 433 have a bent portion 434 bent toward the side away from the positioning ring 420 . The connecting arm 433 is hinged to the end of the extension arm 432 away from the swing arm 431 via the bent portion 434 .

[0099] Optionally, the rotation axis of the bending portion 434 relative to the extension arm 432 intersects with the rotation axis of the rotation sleeve 430 , but is not limited thereto.

[0100] The bent portion 434 is fully fitted to the extension arm 432 and is smoothed.

[0101] Optionally, each rotating sleeve 430 is provided with two swing arms 431, which are respectively configured to cooperate with the swing arms 431 of the rotating sleeves 430 on both sides of the rotating sleeve 430. With this design, only one rotating sleeve 430 needs to be driven to synchronously drive all rotating sleeves 430. Each rotating sleeve 430 is connected to only one suction capsule 500, and each rotating sleeve 430 has only one swing arm 431 connected to the extrusion portion of the suction capsule 500.

[0102] Furthermore, when the swing arm 431 is located at the first swing point, the distance between the suction port and the positioning ring 420 is greater than the distance between the coating nozzle 600 and the positioning ring 420, so that the coating nozzle 600 can avoid contact with the inner ring wall of the reference ring 410 and avoid lubricant loss.

[0103] The suction bag 500 includes a first baffle 510 , a second baffle 520 , a suction pipe 530 , a bag body 540 and a discharge pipe (not shown in the figure).

[0104] The first baffle 510 is fixedly connected to the rotating sleeve 430 . Optionally, the first baffle 510 is fixedly connected to the outer wall of the rotating sleeve 430 and is arranged perpendicular to the rotation axis of the rotating sleeve 430 .

[0105] The second baffle 520 is fixedly connected to the swing arm 431 . Optionally, the plane where the axis lines of the swing arm 431 and the extension arm 432 lie is parallel to the second baffle 520 .

[0106] The bladder 540 is connected between the first baffle 510 and the second baffle 520 .

[0107] The suction tube 530 is made of a hard material, one end of the suction tube 530 is fixedly connected to the outer wall of the rotating sleeve 430, the end of the suction tube 530 close to the rotating sleeve 430 is closed, the suction tube 530 is arranged along the radial direction of the rotating sleeve 430, and the other end of the suction tube 530 passes through the capsule 540 and extends to the side of the capsule 540 away from the positioning ring 420, and the capsule 540 and the suction tube 530 are sealed.

[0108] A side opening (not shown in the figure) is opened on the side wall of the suction tube 530 . The side opening is located inside the bladder 540 and is used to connect the lumen of the suction tube 530 and the bladder 540 .

[0109] The mouth of the suction tube 530 is the suction port of the suction bag 500. The discharge port of the capsule 540 is the discharge port of the suction bag 500. The discharge pipe connects the discharge port of the capsule 540 with the coating nozzle 600. One-way valves are provided at the inlet of the suction tube 530 and the outlet of the discharge pipe.

[0110] When the swing arm 431 moves between the first swing point and the second swing point, the first baffle 510 and the second baffle 520 jointly pull and squeeze the capsule 540 to achieve the absorption and coating of the lubricant.

[0111] This design can effectively ensure the stability of the position of the suction port (suction tube 530) of the suction bag 500, facilitate accurate matching of the suction bag 500 with the gap 412, and thus make the gap 412 smaller, avoiding accidental loss of lubricant.

[0112] Optionally, the width of the notch 412 matches the outer diameter of the suction pipe 530 .

[0113] Optionally, the temperature detection mechanism can be provided at the first limiting ring 320 , and correspondingly, the first limiting ring 320 is made of a heat-conducting material. The temperature detection mechanism indirectly determines the condition of the pull rope 310 by detecting the temperature of the first limiting ring 320 .

[0114] It is possible to monitor the temperature of only the first limiting ring 320, without monitoring the temperature of the second limiting ring 330. This is because the primary friction occurs at the first limiting ring 320, and the frictional heat generated at the second limiting ring 330 is significantly lower than that at the first limiting ring 320. Accordingly, one skilled in the art can control the critical temperature for lubricant application by adjusting the specific value of the temperature threshold. It is understood that if there is concern that frictional heat generated at the second limiting ring 330 will affect the mechanical properties of the pull cord 310, the temperature threshold can be set relatively low to initiate lubricant application at a relatively low temperature.

[0115] Lubricating mechanism 400 also includes a driver (not shown) that drives and engages with rotating sleeve 430. When the temperature detected by the temperature detection mechanism is greater than or equal to a temperature threshold, the data center controls the driver to drive rotating sleeve 430, thereby applying lubricant to pull rope 310.

[0116] Optionally, the annular inner cavity 411 extends axially along the reference ring 410 and penetrates to one end wall of the reference ring 410. The reference ring 410 is equipped with a matching ring 413, which is slidably fitted in the annular inner cavity 411 and slidingly sealed. The matching ring 413 extends outside the reference ring 410.

[0117] The driver also cooperates with the matching ring 413 so that when the driver drives the rotating sleeve 430, it can also drive the matching ring 413 to move inside the reference ring 410, thereby pushing the lubricant in the annular cavity 411 to the notch 412 for easy suction by the suction bag 500.

[0118] The transmission ratios between the driver and the rotating sleeve 430 , and between the driver and the matching ring 413 , can be adjusted so that the pushing speed of the matching ring 413 on the lubricant can meet the suction requirements of the suction bag 500 while preventing the lubricant from being directly pushed out of the notch 412 .

[0119] Optional, such as Figure 9 As shown, a first protruding ring 710 and a second protruding ring 720 can be provided on the outer wall of the rotating sleeve 430 in an area between the first baffle 510 and the hinge point of the swing arm 431 of the rotating sleeve 430 that is not connected to the suction capsule 500. When the swing arm 431 moves between the first swing point and the second swing point, neither the swing arm 431 nor the extension arm 432 moves to the first protruding ring 710 or the second protruding ring 720.

[0120] The first protruding ring 710 is rotatably matched with the rotating sleeve 430 , and the first protruding rings 710 of the rotating sleeves 430 can be fixedly connected to the inner ring wall of the reference ring 410 , thereby achieving installation and positioning of the positioning ring 420 .

[0121] The second convex ring 720 is fixedly matched with the rotating sleeve 430 , and the driver can drive the rotating sleeve 430 by transmission matching with the second convex ring 720 .

[0122] The lubricating mechanism 400 applies lubricant to the pull rope 310 only when necessary, which can effectively reduce the amount of lubricant used and is more environmentally friendly.

[0123] In addition, due to the reasonable control of the amount of lubricant, excessive adhesion of lubricant to the surface of the pull rope 310 can be effectively avoided. During the experiment, the probability of particulate impurities adhering to the surface of the pull rope 310 is greatly reduced, which reduces the probability of damage to other components in the first connecting seat 100 and improves repeatability.

[0124] On this basis, the probability of the pull rope 310 throwing out the lubricant during the retraction and extension process is also reduced, thereby preventing the surfaces of other components in the first connecting seat 100 from being covered by the lubricant.

[0125] It should be noted that the spacing distance between the first limiting ring 320, the lubricating mechanism 400 and the second limiting ring 330 can be adjusted as needed. For example, if the spacing distance between the first limiting ring 320, the lubricating mechanism 400 and the second limiting ring 330 is set to be smaller, the lubricant coated on the pull rope 310 can reach the first limiting ring 320 and the second limiting ring 330 faster, which is more conducive to the full play of the lubricant. Ordinary technicians in this field can make adjustments as needed.

[0126] To sum up, the tunnel seismic performance detection system provided by the embodiment of the present invention can better demonstrate the actual performance of the mechanical components in the tunnel model during the vibration process, facilitate more accurate grasp of the actual performance of each mechanical component in ensuring the seismic performance of the tunnel model, and provide a reference for the targeted optimization of the tunnel scheme.

[0127] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A tunnel seismic performance detection system, characterized in that: include: A first connecting seat, a second connecting seat, a winding mechanism, a drawstring, a first limiting ring, a second limiting ring, a lubrication mechanism, a temperature detection mechanism, and a data center; The first connecting seat is used to be fixedly connected to a mechanical component of the tunnel model, and the second connecting seat is used to be fixedly connected to another mechanical component of the tunnel model; The first limiting ring, the second limiting ring and the lubricating mechanism are all fixedly mounted on the first connecting seat, the first limiting ring and the second limiting ring are coaxially spaced apart, and the lubricating mechanism is arranged between the first limiting ring and the second limiting ring; The reeling mechanism is installed on the first connecting seat, one end of the pull rope is reeled in the reeling mechanism, and the other end of the pull rope passes through the second limiting ring and the first limiting ring in sequence and is fixedly connected to the second connecting seat; The reeling mechanism has a metering module for determining the released length of the drawstring, and is also provided with a force-applying component for continuously applying tension to the drawstring so that the drawstring is always in a taut state; The temperature detection mechanism is used to detect the temperature of the pull rope; The metering module and the temperature detection mechanism are both electrically connected to the data center; the data center is used to determine the relative motion relationship between the various mechanical components of the tunnel model during the vibration process based on the release length; the data center is also used to control the lubrication mechanism to apply lubricant to the pull rope when the temperature detected by the temperature detection mechanism is greater than or equal to the temperature threshold; The lubrication mechanism includes: a reference ring, a positioning ring, a rotating sleeve, a swing arm and a connecting arm; The reference ring has an annular inner cavity containing lubricant, and an inner ring wall of the reference ring is provided with a notch communicating with the annular inner cavity; The positioning ring is arranged inside the reference ring and coaxially with the reference ring, and the outer diameter of the positioning ring is smaller than the inner diameter of the reference ring; The rotating sleeve is rotatably mounted on the positioning ring, the rotating axis of the rotating sleeve is perpendicular to the central axis of the positioning ring, and the plurality of rotating sleeves are spaced apart along the circumference of the positioning ring; One end of the swing arm is hinged to the rotating sleeve. Along the circumference of the positioning ring, the connecting arm is connected between the swing arms of two adjacent rotating sleeves. The end of the connecting arm is hinged to the end of the swing arm away from the rotating sleeve, so that when one rotating sleeve rotates, the rotating sleeve can drive the other rotating sleeve to rotate synchronously through the swing arm and the connecting arm. Pass the drawstring through the retaining ring.

2. The tunnel seismic performance detection system according to claim 1, characterized in that: The swing arm has a first swing point and a second swing point; when the hinge point between the swing arm and the connecting arm moves to the side of the positioning ring away from the central axis thereof, the two swing arms connected to the same connecting arm both swing to the opposite side, and the swing arm is located at the first swing point; when the hinge point between the swing arm and the connecting arm moves to the side of the positioning ring close to the central axis thereof, the two swing arms connected to the same connecting arm both swing to the opposite side, and the swing arm is located at the second swing point; The outer wall of the rotating sleeve is fixedly connected to a suction bag, and the swing arm is connected to the extrusion part of the suction bag; the suction bag has a suction port and a discharge port, and both the suction port and the discharge port are provided with a one-way valve; A coating nozzle is fixedly connected to a side of the connecting arm away from the positioning ring, and the discharge port of the suction bag is connected to the inlet of the coating nozzle; When the swing arm is located at the first swing point, the suction port of the suction bag extends to the notch; when the swing arm is located at the second swing point, the coating nozzle faces the drawstring; When the temperature detected by the temperature detection mechanism is greater than or equal to the temperature threshold, the data center is used to control the rotation of the rotating sleeve to make the swing arm move between the first swing point and the second swing point.

3. The tunnel seismic performance detection system according to claim 2, characterized in that: The rotation axis of the swing arm is perpendicular to the rotation axis of the rotating sleeve, and the swing arm is arranged perpendicular to the rotation axis; An extension arm is fixedly connected to one end of the swing arm away from the rotating sleeve, and the extension arm is arranged perpendicular to the swing arm and extends toward a side close to the positioning ring; Both ends of the connecting arm have a bent portion bent toward a side away from the positioning ring, and the bent portion is hinged to an end of the extension arm away from the swing arm.

4. The tunnel seismic performance detection system according to claim 2, characterized in that: When the swing arm is located at the first swing point, the distance between the suction port and the positioning ring is greater than the distance between the coating nozzle and the positioning ring.

5. The tunnel seismic performance detection system according to claim 2, characterized in that: The suction bag comprises: a first baffle, a second baffle, a suction pipe, a bag body and a discharge pipe; The first baffle is fixedly connected to the rotating sleeve, the second baffle is fixedly connected to the swing arm, and the capsule is connected between the first baffle and the second baffle; The suction pipe is made of a hard material, one end of the suction pipe is fixedly connected to the rotating sleeve, and the other end passes through the capsule and extends to the side of the capsule away from the positioning ring, and the capsule and the suction pipe are sealed; The side wall of the suction pipe is provided with a side opening, and the side opening is located in the capsule; the discharge pipe connects the capsule and the coating nozzle; and the one-way valve is arranged at the inlet of the suction pipe and the outlet of the discharge pipe.

6. The tunnel seismic performance detection system according to claim 5, characterized in that: The width of the notch is adapted to the outer diameter of the suction pipe.

7. The tunnel seismic performance detection system according to claim 1, characterized in that: The drawstring is a low-elasticity rope.

8. The tunnel seismic performance detection system according to claim 1, characterized in that: The inner diameter of the first limiting ring is adapted to the outer diameter of the pull rope.

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