A vibration damping device for track bridge erection

Abstract

The present invention provides a vibration damping device for track bridge erection. The vibration damping device for track bridge erection includes an upper bearing plate and a lower bearing plate that is slidably matched with the upper bearing plate. In the vibration damping device for track bridge erection in this application, a rotating shaft is rotatably arranged on the upper bearing plate and the lower bearing plate. Both ends of a cable used to limit the displacement amount of the upper bearing plate and the lower bearing plate are fixedly installed on the rotating shaft. Thus, when the train passes over the bridge and vibrates, causing relative displacement between the upper bearing plate and the lower bearing plate and making the cable in a tightened state, through the rotation of the rotating shaft, the cable can still be kept in a straight state, which can avoid the cable being bent due to the change of the angle and affecting the service life of the cable. Thereby, the service life of the entire vibration damping device for track bridge erection is improved, and the workload of maintenance personnel in the later stage is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of track bridge vibration damping devices, and particularly relates to a vibration damping device for track bridge erection. Background Art

[0002] A railway bridge is a structure built to span rivers, lakes, straits, valleys or other obstacles, and to achieve the overpass of railway lines with railway lines or roads. Railway bridges have large loads, large impact forces, high train densities, and require high standards for resisting natural disasters. In particular, the structure is required to have a certain vertical and lateral stiffness and dynamic performance. Therefore, it is usually necessary to install a vibration damping device between the railway bridge and the pier to reduce and relieve the vibration borne by the pier and abutment. The currently used vibration damping devices include rigid vibration damping devices. When the rigid vibration damping device is in use, cables are used to limit the maximum displacement of the upper support and the lower support of the rigid vibration damping device. Currently, the installation method of the cable is prone to local bending of the cable when the upper support or the lower support undergoes displacement. Due to the large acting force, the cable is easily damaged, affecting the service life of the cable. Summary of the Invention

[0003] An embodiment of the present invention provides a vibration damping device for track bridge erection, aiming to solve the problem that the cable on the track bridge vibration damping device in the prior art is easily damaged and has a low service life.

[0004] To achieve the above object, the technical solution adopted by the present invention is: to provide a vibration damping device for track bridge erection, including:

[0005] An upper support plate;

[0006] A lower support plate, located below the upper support plate, and the lower support plate is slidably matched with the upper support plate for buffering the vibration generated by the bridge on the pier;

[0007] A plurality of rotating roller groups, each rotating roller group includes two rotating shafts respectively arranged on the upper support plate and the lower support plate, and the two rotating shafts are arranged at intervals and parallel to each other in the vertical direction;

[0008] A cable, one end of which is fixedly installed on the rotating shaft on the upper support plate, and the other end is fixedly installed on the rotating shaft of the lower support plate.

[0009] In a possible implementation manner, wing plates extending out of the outer side wall of the rotating shaft are provided on the rotating shaft, both ends of the wing plates protrude from the side wall of the rotating shaft, and relief holes for avoiding the wing plates are provided on both the upper support plate and the lower support plate when the rotating shaft rotates. First elastic members for driving the wing plates to maintain a horizontal state are provided at both ends of the wing plates inside the relief holes.

[0010] In a possible implementation, the wing plate is slidably matched with two inner walls of the clearance hole along the axis direction of the rotating shaft.

[0011] In one possible implementation, the wing plate has the freedom to slide in a vertical direction on the rotating shaft, and when the wing plate slides on the rotating shaft, the end of the wing plate can slide into the interior of the rotating shaft, and a second elastic member for pushing the wing plate to slide into the interior of the rotating shaft is also provided between the rotating shaft and the wing plate, and a pushing member for pushing the wing plate to slide in a direction extending out of the outside of the rotating shaft is also provided between the rotating shaft and the wing plate.

[0012] In a possible implementation, the pushing member is threadedly connected to the rotating shaft, and the end of the pushing member abuts against the wing plate to push the wing plate to slide on the rotating shaft, and the connecting end of the cable is connected to the end of the pushing member away from the wing plate.

[0013] In one possible implementation, a threaded portion is provided at the connecting end of the cable, a limiting portion protruding from the outer diameter of the pushing member is provided at the end of the pushing member away from the wing plate, a connecting member is also provided between the cable and the pushing member, a threaded hole threadedly connected to the threaded portion is provided on the connecting member, a through hole for accommodating the pushing member is also provided on the connecting member, the through hole is arranged parallel to the axis of the threaded hole, and the size of the through hole is smaller than the outer size of the limiting portion.

[0014] In a possible implementation, the connecting member includes a connecting arm for connecting to the pushing member, the through hole is located on the connecting arm, and a limiting member is also threadedly connected to the pushing member. When the connecting member is connected to the pushing member, the limiting member and the limiting portion are located on both sides of the connecting arm.

[0015] In a possible implementation, the end of the cable is also connected to a fixing sleeve, the threaded portion is fixedly mounted on the fixing sleeve, a mounting hole for placing the cable is provided inside the fixing sleeve, and an open groove arranged along the axial direction of the mounting hole is provided on the side wall of the mounting hole, and a tightening sleeve for clamping the cable inside the fixing sleeve is also provided on the outer side of the fixing sleeve.

[0016] In a possible implementation, the tightening sleeve is threadedly connected to the fixing sleeve, and a tapered hole is provided inside the tightening sleeve, and the diameter of the tapered hole gradually increases in a direction approaching the threaded portion.

[0017] In a possible implementation, the upper support plate and the lower support plate are detachably mounted with fixed flanges, and the fixed flanges are located at both ends of the rotating shaft and are used to limit the rotating shaft on the upper support plate and the lower support plate.

[0018] Compared with the prior art, the scheme shown in the embodiment of the present application is provided with an upper support plate and a lower support plate, and a spherical cap lining is installed between the upper support plate and the lower support plate, and the upper support plate and the lower support plate slide relative to each other through the spherical cap lining. The upper support plate is fixedly installed on the bridge, and the lower support plate is fixedly installed on the bridge pier. When the train passes and vibrates, the bridge can drive the upper support plate to slide relative to the lower support plate to reduce the vibration of the bridge pier. The present application provides a plurality of rotating roller groups between the upper support plate and the lower support plate, and the rotating roller group includes two rotating shafts arranged at intervals in the vertical direction. The two rotating shafts are respectively rotatably arranged on the upper support plate and the lower support plate, and a cable is fixedly connected between the two rotating shafts. The cable adopts a steel wire rope, and the two ends of the cable are respectively fixed on the opposite sides of the two rotating shafts. A clearance groove for avoiding the steel wire rope when the rotating shaft rotates is provided on both the upper support plate and the lower support plate. In this application, when a train passes through a bridge, the bridge will drive the upper support plate to meet and slide with the lower support plate, thereby tightening the cable and buffering the upper and lower support plates. When the upper and lower support plates are relatively displaced, the cable will drive the two rotating shafts on the rotating roller group to rotate relative to each other, so that the cable can still maintain a straight line when it is taut. This prevents the cable from bending and being damaged when subjected to force, thereby increasing the service life of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the structure of a vibration reduction device for track bridge erection provided by an embodiment of the present invention;

[0020] Figure 2 A side view of a vibration reduction device for track bridge erection provided by an embodiment of the present invention;

[0021] Figure 3 A schematic diagram of the installation structure of the rotating shaft provided in an embodiment of the present invention;

[0022] Figure 4 A schematic diagram of the installation structure of the cable provided in an embodiment of the present invention;

[0023] Figure 5 A side sectional view of a rotating shaft provided by an embodiment of the present invention;

[0024] Figure 6 A schematic diagram of the installation structure of the fixed flange and the rotating shaft provided in an embodiment of the present invention.

[0025] Description of reference numerals:

[0026] 1. Upper support plate; 2. Lower support plate; 3. Spherical crown lining plate; 4. Rotating shaft; 41. Wing plate; 42. First elastic member; 43. Second elastic member; 44. Pushing member; 441. Limiting portion; 442. Limiting member; 5. Cable; 6. Fixed sleeve; 61. Threaded portion; 7. Connecting member; 71. Connecting arm; 8. Tightening sleeve; 9. Fixed flange plate. Detailed implementation manner

[0027] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0028] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 6 for an illustration of the vibration damping device for track bridge erection provided by the present invention. The vibration damping device for track bridge erection includes an upper support plate 1, a lower support plate 2, a rotating roller set, and a cable 5. The lower support plate 2 is located below the upper support plate 1. A spherical crown lining plate 3 is further provided between the upper support plate 1 and the lower support plate 2, and the spherical crown lining plate 3 is slidably engaged with the upper support plate 1 and the lower support plate 2 respectively; the number of the rotating roller sets is multiple, and the rotating roller set includes two rotating shafts 4 respectively rotatably provided on the upper support plate 1 and the lower support plate 2, and the two rotating shafts 4 are arranged at intervals and parallel to each other in the vertical direction; one end of the cable 5 is fixedly installed on the rotating shaft 4 on the upper support plate 1, and the other end is fixedly installed on the rotating shaft 4 of the lower support plate 2.

[0029] Compared with the prior art, the vibration reduction device for rail bridge erection provided in this embodiment is provided with an upper support plate 1 and a lower support plate 2, and a spherical cap lining plate 3 is provided between the upper support plate 1 and the lower support plate 2, and the upper support plate 1 and the lower support plate 2 slide relative to each other through the spherical cap lining plate 3. The upper support plate 1 is fixedly installed on the bridge, and the lower support plate 2 is fixedly installed on the bridge pier. When the train passes and vibrates, the bridge can drive the upper support plate 1 to slide relative to the lower support plate 2 to reduce the vibration of the bridge pier. The present application provides a plurality of rotating roller groups between the upper support plate 1 and the lower support plate 2, and the rotating roller group includes two rotating shafts 4 arranged at intervals in the vertical direction. The two rotating shafts 4 are rotatably provided on the upper support plate 1 and the lower support plate 2, respectively, and a cable 5 is fixedly connected between the two rotating shafts 4. The cable 5 adopts a steel wire rope, and the two ends of the cable 5 are respectively fixed on the opposite sides of the two rotating shafts 4. The upper support plate 1 and the lower support plate 2 are both provided with a clearance groove for avoiding the steel wire rope when the rotating shaft 4 rotates. In this application, when the train passes through the bridge, the bridge will drive the upper support plate 1 to meet the lower support plate 2 and slide. Thereby, the cable 5 is tightened and the upper support plate 1 and the lower support plate 2 are buffered. When the upper support plate 1 and the lower support plate 2 are relatively displaced, the cable 5 will drive the two rotating shafts 4 on the rotating roller group to rotate relative to each other, so that the cable 5 can still maintain a straight state when it is taut. Prevent the cable 5 from bending and being damaged when subjected to force, thereby increasing the service life of the cable 5.

[0030] Specifically, in this embodiment, a guide slide hole for the rotation of the rotation shaft 4 is provided on both the upper support plate 1 and the lower support plate 2, and the outer wall of the rotation shaft 4 is slidably matched with the inner wall of the guide slide hole. The projection of the upper support plate 1 and the lower support plate 2 along the vertical direction is a square structure. The axis of the rotation shaft 4 located on the upper support plate 1 and the lower support plate 2 is arranged along the length direction or the width direction of the square structure, and the rotation shaft 4 can also be arranged in both the length direction and the width direction of the square structure.

[0031] Optionally, in this embodiment, the rotating shaft 4 is located outside the spherical cap lining 3 , and when the cables 5 are fixedly mounted on two rotating shafts 4 , a plurality of cables 5 are located outside the spherical cap lining 3 .

[0032] Optionally, in this embodiment, fixing holes for fixing the cables 5 are provided on the two rotating shafts 4 on the rotating roller assembly, and the projections of the fixing holes on the two rotating shafts 4 along the vertical direction overlap each other when the support base is in a free state.

[0033] In some embodiments, the rotating shaft 4 may be Figure 3 , Figure 5 See also Figure 3 , Figure 5, a wing plate 41 extending out of the outer wall of the rotating shaft 4 is arranged on the rotating shaft 4. Both ends of the wing plate 41 protrude from the side wall of the rotating shaft 4. Relief holes for avoiding the wing plate 41 when the rotating shaft 4 rotates are arranged on both the upper support plate 1 and the lower support plate 2. First elastic members 42 for driving the wing plate 41 to maintain a horizontal state are arranged at both ends of the wing plate 41 inside the relief holes. A wing plate 41 extending out of the outer wall of the rotating shaft 4 is arranged outside the rotating shaft 4, and a first elastic member 42 is further arranged between the wing plate 41 and the inner wall of the relief hole. In this embodiment, two first elastic members 42 are correspondingly arranged for each wing plate 41, and the two first elastic members 42 respectively abut against the ends of the two wing plates 41. And the two elastic members are symmetrically arranged on both sides of the rotating shaft 4 along the axis of the rotating shaft 4. When the rotating shaft 4 rotates, the wing plate 41 will be driven to rotate together, so that the elastic member at one end of the wing plate 41 is compressed and deformed. When returning to the free state, the wing plate 41 can be pushed by the first elastic member 42 to drive the rotating shaft 4 to return to the free state. It can further play a buffering role for the track bridge.

[0034] In some embodiments, the above-mentioned wing plate 41 can adopt, for example Figure 3 , Figure 5 shown structure. Referring together to Figure 3 , Figure 5 , the wing plate 41 and the two inner walls of the relief hole in the axial direction of the rotating shaft 4 are in sliding fit. The two side walls of the wing plate 41 in the axial direction of the rotating shaft 4 are in sliding fit with the two side walls inside the relief hole. The relative position of the rotating shaft 4 in the axial direction of the rotating shaft 4 on the upper support plate 1 or the lower support plate 2 can be limited by the installation of the wing plate 41, so that the rotating shaft 4 can only rotate on the upper support plate 1 or the lower support plate 2.

[0035] In some embodiments, the above-mentioned wing plate 41 can adopt, for example Figure 3 , Figure 5 shown structure. Referring together to Figure 3 , Figure 5, the wing plate 41 has a degree of freedom to slide vertically on the rotating shaft 4. When the wing plate 41 slides on the rotating shaft 4, the end of the wing plate 41 can slide into the interior of the rotating shaft 4. A second elastic member 43 for pushing the wing plate 41 to slide into the interior of the rotating shaft 4 is further provided between the rotating shaft 4 and the wing plate 41. A pushing member 44 for pushing the wing plate 41 to slide in a direction extending outside the rotating shaft 4 is further provided between the rotating shaft 4 and the wing plate 41. The cross-section of the rotating shaft 4 is circular, and the length of the wing plate 41 is not greater than the diameter of the rotating shaft 4. When the wing plate 41 slides to the axis of the rotating shaft 4, the wing plate 41 is located inside the rotating shaft 4. Thus, the rotating shaft 4 can be withdrawn from the upper support plate 1 or the lower support plate 2. When the wing plate 41 moves in a direction away from the axis of the rotating shaft 4, both ends of the wing plate 41 extend outside the rotating shaft 4 and slide into the relief hole. And the pushing member 44 is used to push the wing plate 41 to continue moving in a direction away from the axis, so that the wing plate 41 abuts against the first elastic member 42, completing the limiting and installation of the rotating shaft 4. By slidably arranging the wing plate 41 inside the rotating shaft 4, the disassembly and installation of the rotating shaft 4 can be facilitated.

[0036] Optionally, in this embodiment, through the arrangement of the second elastic member 43, when it is necessary to remove the rotating shaft 4 from the upper support plate 1 or the lower support plate 2, by removing the pushing member 44 from the rotating shaft 4, and the second elastic member 43 can push the wing plate 41 to move in a direction close to the axis of the rotating shaft 4, so that the whole wing plate 41 slides into the interior of the rotating shaft 4.

[0037] Optionally, in this embodiment, an installation socket for installing the second elastic member 43 is recessed on the wing plate 41. The second elastic member 43 is installed inside the installation socket and abuts against the inside of the rotating shaft 4. To drive the wing plate 41 to move in a direction close to the axis of the rotating shaft 4.

[0038] Specifically, in this embodiment, a sliding cavity for the wing plate 41 to slide is provided inside the rotating shaft 4. A sliding strip protruding from the side wall of the wing plate 41 is provided on the outer side wall of the wing plate 41. The length direction of the sliding strip is arranged along the sliding direction of the wing plate 41. A sliding groove slidably matched with the sliding strip is recessed on the inner wall of the sliding cavity, which can further limit the position of the wing plate 41 inside the rotating shaft 4.

[0039] Optionally, in this embodiment, a limiting platform for limiting the wing plate 41 to move in a direction close to the first elastic member 42 is provided on the side of the sliding cavity away from the cable 5. The pushing member 44 can abut the wing plate 41 against the limiting platform. Completing the fixation of the wing plate 41 inside the rotating shaft 4.

[0040] Specifically, in this embodiment, a clearance for avoiding the pusher 44 from moving along the axis of the rotating shaft 4 is provided on the upper support plate 1 and the lower support plate 2. The cable 5 and the pusher 44 can be first installed on the rotating shaft 4, and then installed as a whole on the upper support plate 1 or the lower support plate 2, and finally the tightness of the cable 5 can be adjusted. The installation process is convenient and the installation time of the cable 5 is saved. In this embodiment, a plurality of cables 5 are fixed on each rotating shaft 4.

[0041] In some embodiments, the push member 44 may be configured as follows: Figure 3 , Figure 5 See also Figure 3 , Figure 5 , the pusher 44 is threadedly connected to the rotating shaft 4, and the end of the pusher 44 abuts on the wing plate 41, which is used to push the wing plate 41 to slide on the rotating shaft 4, and the connecting end of the cable 5 is connected to the end of the pusher 44 away from the wing plate 41. The pusher 44 is threadedly connected to the rotating shaft 4, and the pusher 44 passes through the side wall of the sliding cavity in the rotating shaft 4 and abuts on the wing plate 41. In the present application, a single wing plate 41 corresponds to a pusher 44, and the length direction of the pusher 44 is arranged along the radial direction of the rotating shaft 4, and the end of the cable 5 is fixedly connected to the pusher 44. When the cable 5 is kept in a tensioned state, the cable 5 is arranged along the radial direction of the rotating shaft 4. And the end of the cable 5 is connected to the pusher 44, and the pusher 44 is detachably installed on the rotating shaft 4 through a thread, so that when the cable 5 is damaged during later operation and maintenance, the single pusher 44 can be removed from the rotating shaft 4 to remove and replace the cable 5. It is easy to operate and facilitates the subsequent operation and maintenance of the support bearing.

[0042] In some embodiments, the cable 5 may be Figure 3 , Figure 4 See also Figure 3 , Figure 4, a threaded portion 61 is provided at the connecting end of the cable 5. A limiting portion 441 protruding from the outer diameter of the pushing member 44 is provided at the end of the pushing member 44 away from the wing plate 41. A connecting member 7 is further provided between the cable 5 and the pushing member 44. A threaded hole threadedly connected to the threaded portion 61 is provided on the connecting member 7. A through hole for accommodating the pushing member 44 is also provided on the connecting member 7. The axis of the through hole is parallel to the axis of the threaded hole, and the size of the through hole is smaller than the outer dimension of the limiting portion 441. When the cable 5 is in a straight state, the threaded portion 61 and the cable 5 are in a coaxial state. One end of the connecting member 7 is provided with a threaded hole threadedly connected to the threaded portion 61, and the connecting member 7 is rotatably arranged at the end of the pushing member 44. The threaded hole and the through hole on the connecting member 7 are coaxially arranged. The relative rotation of the connecting member 7 and the threaded portion 61 can be realized by rotating the connecting member 7, so as to adjust the length of the cable 5 between the upper support plate 1 and the lower support plate 2. To make the lengths of multiple cables 5 between the upper support plate 1 and the lower support plate 2 consistent. When the lengths of multiple cables 5 are the same, when the upper support plate 1 and the lower support plate 2 undergo relative displacement, multiple cables 5 can be simultaneously stressed between the upper support plate 1 and the lower support plate 2, improving the buffering strength of the cable 5 and avoiding the breakage of a single cable 5 caused by the force on the single cable 5.

[0043] In some embodiments, the above-mentioned connecting member 7 can adopt a structure such as Figure 3 , Figure 4 shown. Referring to Figure 3 , Figure 4 together, the connecting member 7 includes a connecting arm 71 for connecting with the pushing member 44. The through hole is located on the connecting arm 71. A limiting member 442 is also threadedly connected to the pushing member 44. When the connecting member 7 is connected to the pushing member 44, the limiting member 442 and the limiting portion 441 are located on both sides of the connecting arm 71. The limiting member 442 is threadedly connected to the pushing member 44. After the adjustment of the length of the cable 5 in the length direction is completed, the connecting member 7 can be fixed between the limiting member 442 and the limiting portion 441 to prevent the connecting member 7 from sliding on the pushing member 44 and getting stuck.

[0044] Optionally, at least two limiting members 442 are also threadedly connected to the threaded portion 61, and the two limiting members 442 are respectively located on both sides of the connecting member 7. The threaded portion 61 can be tightened on the connecting member 7 to prevent the threaded portion 61 from displacing on the connecting member 7 or the threaded portion 61 from detaching from the connecting member 7.

[0045] In some embodiments, the above-mentioned cable 5 can adopt a structure such as Figure 3 , Figure 4 shown. Referring to Figure 3 , Figure 4, a fixing sleeve 6 is further connected to the end of the cable 5. The threaded portion 61 is fixedly installed on the fixing sleeve 6. An installation hole for placing the cable 5 is provided inside the fixing sleeve 6, and an opening groove is provided on the side wall of the installation hole along the axis direction of the installation hole. A tightening sleeve 8 for clamping the cable 5 inside the fixing sleeve 6 is further provided on the outside of the fixing sleeve 6. An installation hole for installing the end of the cable 5 is provided inside the fixing sleeve 6, and the installation hole is a blind hole. The end of the cable 5 can be abutted against the bottom of the installation hole to determine the position of the cable 5 inside the fixing sleeve 6. The tightening sleeve 8 is sleeved on the outside of the fixing sleeve 6, and the tightening sleeve 8 can move relative to the fixing sleeve 6 along the axis direction of the fixing sleeve 6. When the tightening sleeve 8 moves relative to the fixing sleeve 6, the side wall of the fixing sleeve 6 can be moved towards the cable 5, and the cable 5 can be pressed inside the tightening sleeve 8. Thus, the fixed connection between the cable 5 and the fixing sleeve 6 is completed.

[0046] Optionally, in this embodiment, a limiting piece inclined towards the inside of the installation hole is provided on the inner wall of the installation hole of the fixing sleeve 6. The limiting piece is gradually inclined towards the inside of the installation hole from the mouth of the installation hole towards the bottom of the installation hole, and the connecting portion of the limiting piece is located at one end of the limiting plate close to the mouth of the installation hole. The limiting piece is of an overall conical structure, and the width of the limiting piece gradually becomes smaller from the connecting portion of the limiting piece towards the direction away from the connecting portion of the limiting piece. Through the setting of the limiting piece, the end of the limiting piece can be pierced into the cable 5.

[0047] In some embodiments, the above-mentioned tightening sleeve 8 can adopt the structure as Figure 3 , Figure 4 shown. Referring to Figure 3 , Figure 4 together, the tightening sleeve 8 is threadedly connected to the fixing sleeve 6, and a tapered hole is provided inside the tightening sleeve 8. The hole diameter of the tapered hole gradually becomes larger towards the direction close to the threaded portion 61. One end of the fixing sleeve 6 away from the installation hole is fixedly connected with a threaded portion 61 for connecting with the connecting piece 7. The threaded portion 61 is coaxially arranged with the threaded hole. An external thread for threadedly connecting with the tightening sleeve 8 is provided on the outside of the fixing sleeve 6, and the outer side surface of the side wall of the fixing hole is a conical structure adapted to the outer shape of the tapered hole of the tightening sleeve 8. When the fixing sleeve 6 moves relative to the tightening sleeve 8 along the axis of the installation hole, the side wall of the fixing sleeve 6 can be driven to contract inwards, so that the cable 5 is fixed inside the fixing sleeve 6. When the tightening sleeve 8 and the fixing sleeve 6 move relatively, the tightening sleeve 8 can be rotated to make the tightening sleeve 8 rotate relative to the fixing sleeve 6, and the relative displacement between the tightening sleeve 8 and the fixing sleeve 6 can be realized through the threaded connection between the tightening sleeve 8 and the fixing sleeve 6.

[0048] In some embodiments, the installation structure of the above-mentioned rotating shaft 4 can adopt the structure as Figure 1 , Figure 2 andFigure 6 The structure shown. Refer also to Figure 1 , Figure 2 and Figure 6 , a fixed flange 9 is detachably installed on the upper support plate 1 and the lower support plate 2. The fixed flange 9 is located at both ends of the rotating shaft 4 and is used to limit the rotating shaft 4 on the upper support plate 1 and the lower support plate 2. The rotating shaft mounting holes on the upper support plate 1 or the lower support plate 2 are through holes, and fixed flanges 9 are detachably provided at both ends of the mounting holes. The fixed flange 9 is detachably installed on the upper support plate 1 and the lower support plate 2, and the end of the rotating shaft 4 abuts against the fixed flange 9 to prevent the rotating shaft 4 from sliding along the axis direction of the rotating shaft 4 inside the upper support plate 1 or the lower support plate 2.

[0049] Specifically, in this embodiment, tapered rotating holes coaxial with the rotating shaft 4 are provided at both ends of the rotating shaft 4. A guiding shaft slidably matched with the mounting hole is provided on the fixed flange 9, and a tapered rotating head slidably matched with the tapered rotating hole is provided at the end of the guiding shaft away from the fixed flange 9, which can reduce the contact area between the fixed flange 9 and the rotating shaft 4, thereby reducing the friction force between the fixed flange 9 and the rotating shaft 4.

[0050] Optionally, in this embodiment, bearings are fixedly installed at both ends of the rotating shaft 4, and the tapered rotating heads at both ends of the fixed flange 9 abut against the inner rings of the bearings, so as to facilitate the rotation of the rotating shaft 4 relative to the fixed flange 9, and a dust-proof washer is provided between the fixed flange 9 and the upper support plate 1 or the lower support plate 2.

[0051] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A vibration damping device for track bridge erection, characterized in that, include: upper support plate; A lower bearing plate, located below the upper bearing plate, wherein the lower bearing plate and the upper bearing plate are slidably matched to buffer the vibration of the bridge on the pier; A plurality of rotating roller groups, each of which includes two rotating shafts respectively rotatably arranged on the upper support plate and the lower support plate, and the two rotating shafts are spaced apart and arranged in parallel in the vertical direction; A cable, one end of which is fixedly mounted on the rotating shaft on the upper support plate, and the other end of which is fixedly mounted on the rotating shaft of the lower support plate; The rotating shaft is provided with a wing plate extending from the outer side wall of the rotating shaft, and both ends of the wing plate are protruding from the side wall of the rotating shaft, and both the upper support plate and the lower support plate are provided with a clearance hole for avoiding the wing plate when the rotating shaft rotates, and a first elastic member for driving the wing plate to maintain a horizontal state is provided at both ends of the wing plate inside the clearance hole; The wing plate is slidably matched with two inner walls of the clearance hole along the axis direction of the rotating shaft; The wing plate has the freedom to slide in the vertical direction on the rotating shaft, and when the wing plate slides on the rotating shaft, the end of the wing plate can slide into the interior of the rotating shaft, and a second elastic member for pushing the wing plate to slide into the interior of the rotating shaft is also provided between the rotating shaft and the wing plate, and a pushing member for pushing the wing plate to slide in a direction extending outward from the rotating shaft is also provided between the rotating shaft and the wing plate; The pushing member is threadedly connected to the rotating shaft, and an end of the pushing member abuts against the wing plate to push the wing plate to slide on the rotating shaft. The connecting end of the cable is connected to the end of the pushing member away from the wing plate.

2. The vibration damping device for track bridge erection according to claim 1, characterized in that A threaded portion is provided at the connecting end of the cable, and a limiting portion protruding from the outer diameter of the pushing member is provided at the end of the pushing member away from the wing plate. A connecting member is also provided between the cable and the pushing member, and a threaded hole threadedly connected to the threaded portion is provided on the connecting member. A through hole for accommodating the pushing member is also provided on the connecting member, and the through hole is arranged parallel to the axis of the threaded hole, and the size of the through hole is smaller than the outer size of the limiting portion.

3. The vibration damping device for track bridge erection according to claim 2, characterized in that, The connecting member includes a connecting arm for connecting with the pushing member, the through hole is located on the connecting arm, and a limiting member is also threadedly connected to the pushing member. When the connecting member is connected to the pushing member, the limiting member and the limiting portion are located on both sides of the connecting arm.

4. The vibration damping device for track bridge erection according to claim 2, characterized in that, The end of the cable is also connected to a fixing sleeve, the threaded portion is fixedly mounted on the fixing sleeve, a mounting hole for placing the cable is arranged inside the fixing sleeve, and an open groove arranged along the axial direction of the mounting hole is arranged on the side wall of the mounting hole, and a tightening sleeve for clamping the cable inside the fixing sleeve is also arranged on the outer side of the fixing sleeve.

5. The vibration damping device for track bridge erection according to claim 4, characterized in that The tightening sleeve is threadedly connected to the fixing sleeve, and a tapered hole is provided inside the tightening sleeve. The diameter of the tapered hole gradually increases in a direction approaching the threaded portion.

6. The vibration damping device for track bridge erection according to claim 1, characterized in that, A fixed flange is detachably installed on the upper support plate and the lower support plate. The fixed flange is located at both ends of the rotating shaft and is used to limit the rotating shaft on the upper support plate and the lower support plate.

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