CN211922097U - Vibration reduction track bridge structure suitable for urban railway - Google Patents
Vibration reduction track bridge structure suitable for urban railway Download PDFInfo
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- CN211922097U CN211922097U CN201921848417.8U CN201921848417U CN211922097U CN 211922097 U CN211922097 U CN 211922097U CN 201921848417 U CN201921848417 U CN 201921848417U CN 211922097 U CN211922097 U CN 211922097U
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Abstract
The utility model discloses a vibration reduction track bridge structure suitable for urban railways, which comprises a track, a column, a limiting and auxiliary mechanism and a track fastening mechanism; the limiting and assisting mechanism comprises an upper iron base plate and a lower iron base plate, and eleven gauge blocks and nine gauge blocks are arranged on two sides of the rail track; the rail fastening mechanism comprises a bolt sleeve, the anchoring bolt is arranged in the bolt sleeve, the T-shaped bolt penetrates through the limiting and auxiliary mechanism, a B-shaped elastic strip is arranged at the top of the T-shaped bolt, and a locknut is arranged at the top of the B-shaped elastic strip. The utility model discloses a be applicable to urban railway damping track bridge structure, through the design of low high double-deck non-linear appearance, there is the backing plate of increaseing in the track outside, is applicable to and lays 60 kg/h's rail section, and it has advantages such as elastic element easily dismantles, the pretightning force is adjustable.
Description
Technical Field
The utility model belongs to the technical field of the railway track equipment, more specifically relates to a be applicable to urban railway damping track bridge structure.
Background
In order to fully utilize the space above the vehicle section cover and intensively utilize urban land resources, the concept of designing the overhaul shed below the residential area for three-dimensional vehicle inspection shed has been proposed, and corresponding facilities such as residence, business, culture and the like are solved in a matching way. The inspection warehouse is an important workplace for developing primary and secondary repair and preparation work, the operation of the inspection warehouse can also have great influence on the property of the upper cover, and noise and vibration are focused. Compare in the noise, the vibration directly influences the stability of building body structure, can cause basis to sink, house fracture and slope phenomenon to the support post even to the upper cover building, needs to optimize to alleviate the vibration measure and comes the influence of furthest's reduction to the upper cover property urgent.
And each track in the checking library is provided with a track bridge. The track bridge is a basic tool, a three-layer operation platform (part of the platform still uses a two-layer operation platform) is usually adopted for train maintenance, and the track bridge is arranged on the first layer. The track bridge functions to directly carry the train, so the track bridge must have sufficient rigidity and strength. The rail bridge is a rail structure formed by fixing steel rails on a steel structure support through elastic strip fasteners, and workers can maintain and replace parts of a train body below the train through checking a trench. When a train enters or exits a track bridge, vibration is inevitably generated due to interaction between wheels and a track during the running process of the train.
SUMMERY OF THE UTILITY MODEL
To the above defect of prior art or improve the demand, the utility model provides a be applicable to urban railway damping track bridge structure, through the design of low high double-deck non-linear appearance, there is the heightening backing plate in the track outside, is applicable to and lays 60 kg/h's rail section, and it has advantages such as elastic element easily dismantles, the pretightning force is adjustable. Meanwhile, the rail lower elevation base plate and the plate lower elevation base plate are utilized to effectively isolate vibration, and damage of trains caused by vibration when passing through the rail bridge is reduced.
In order to achieve the purpose, the utility model provides a vibration damping track bridge structure suitable for urban railway, which comprises a track, a column, a limiting and auxiliary mechanism and a track fastening mechanism; wherein the content of the first and second substances,
the rail track is an I-shaped steel rail, and the upright post is a steel upright post;
the limiting and assisting mechanism comprises a rectangular plate-shaped upper iron base plate with hollow round tables at four corners and a rectangular plate-shaped lower iron base plate with circular through holes at four corners below the upper iron base plate, the upper iron base plate and the lower iron base plate are arranged between the rail track and the stand column, the top end surface of the upper iron base plate is provided with a rail lower base plate, the upper iron base plate is prevented from being in direct contact with the rail track while vibration is absorbed, the middle pad is arranged between the upper iron base plate and the lower iron base plate, the upper iron base plate is prevented from being in direct contact with the lower iron base plate, eleven gauge blocks are arranged on two sides of an outer side track of the rail track, nine gauge blocks are arranged on two sides of an inner side track of the rail track, and the rail track is tightly pressed;
the track fastening mechanism is arranged on two sides of a steel rail on one side of the rail track, the bolt sleeve is arranged on the top end face of the stand column, the anchor bolt is arranged inside the bolt sleeve through threaded connection, the anchor bolt fixes the limiting and auxiliary mechanism on the stand column, the cover plate is arranged on the top end face of the hollow round table of the upper iron base plate and protects internal components of the upper iron base plate, the T-shaped bolt penetrates through a reserved hole of the limiting and auxiliary mechanism, a B-shaped elastic strip is arranged at the top of the T-shaped elastic strip, the B-shaped elastic strip is in contact with the nine-gauge block, the eleven-gauge block and the rail track, and a check nut is arranged at the top of the B-shaped elastic strip and winds the top of the T-shaped bolt to tightly press and fix the limiting and auxiliary mechanism and the rail track.
Further, spacing and complementary unit is still including locating the rail down height-adjusting backing plate of rail backing plate bottom end face lower part and locating the board down height-adjusting backing plate of iron backing plate bottom end face below down, the rail down height-adjusting backing plate with the board down height-adjusting backing plate is high density polyethylene and makes.
Furthermore, the limiting and auxiliary mechanism further comprises a coupling plate which is arranged below the bottom end face of the plate lower heightening base plate and used for concentrated stress.
Furthermore, the rail fastening mechanism further comprises a flat washer arranged on the bottom end face of the locknut and a double-layer spring washer arranged at the bottom of the bolt cap of the anchoring bolt.
Furthermore, the B-type elastic strip is made of spring steel.
Furthermore, rectangular groove-shaped structures are arranged on the two end faces of the middle pad and the rail lower pad plate.
Further, the bolt sleeve is made of glass fiber reinforced nylon, and threads are arranged on the inner wall and the outer wall of the bolt sleeve.
Further, the outer side rails of the rail rails are raised by the rail lower elevation base plates and the plate lower elevation base plates.
Furthermore, a concrete base is arranged at the bottom of the upright column, so that the load transmitted by the upright column is uniformly dispersed.
Further, a protective structure suite is arranged on the rail track.
Generally, through the utility model discloses above technical scheme who conceives compares with prior art, can gain following beneficial effect:
(1) the utility model discloses a railway damping track bridge structure, through the design of the double-deck non-linear appearance of low height, there is the backing plate of increaseing in the track outside, is applicable to and lays 60 kg/h's rail section, and it has advantages such as elastic element easily dismantles, the pretightning force is adjustable. Meanwhile, the rail lower elevation base plate and the plate lower elevation base plate are utilized to effectively isolate vibration, and damage of trains caused by vibration when passing through the rail bridge is reduced.
(2) The utility model discloses a railway damping track bridge structure takes into account grease proofing needs during the design, consequently structurally is equipped with the structure safety cover, can effectively avoid corroding because of the damping pad that the greasy dirt corrodes the cause, and then improves the economic nature and the reliability of this railway damping track bridge structure.
(3) The utility model discloses a railway damping track bridge structure, design environment are the regional check storehouse of standing up of city territory, mainly to the check storehouse that motor car section 1, 2 levels were repaiied, and the characteristic is that the matching of check storehouse top has housing construction, improves city land rate of utilization.
Drawings
FIG. 1 is a front view and a cross-sectional view of an overall structure of a vibration-damping track bridge structure for a railway in an urban area according to an embodiment of the present invention;
FIG. 2 is a top view of the overall structure of a vibration damping track bridge structure for urban railways according to an embodiment of the present invention;
FIG. 3 is a partial enlarged view of the portion A of the vibration damping track bridge structure for urban railways according to the embodiment of the present invention;
FIG. 4 is a schematic view of a track bridge structure suitable for a vibration damping track bridge structure inspection warehouse of a railway in an urban area according to an embodiment of the present invention;
fig. 5 is a view of an embodiment of the present invention, which is applicable to a protection structure of a vibration damping track bridge of a urban railway.
In all the figures, the same reference numerals denote the same features, in particular: the device comprises a 1-rail lower backing plate, a 2-upper iron backing plate, a 3-middle backing plate, a 4-lower iron backing plate, a 5-coupling plate, a 6-bottom plate connecting sleeve, a 7-cover plate, an 8-B type elastic strip, a 9-nine gauge block, a 10-eleven gauge block, an 11-rail lower elevation backing plate, a 12-plate lower elevation backing plate, a 13-T type bolt, a 14-locknut, a 15-flat washer, a 16-anchoring bolt, a 17-double-layer spring washer, an 18-bolt sleeve, a 100-rail track, a 200-upright post, a 300-base station and a 400-protective structure kit.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention. Furthermore, the technical features mentioned in the embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
As shown in fig. 1 and 2, the utility model discloses a be applicable to urban railway damping track bridge structure, this railway damping track bridge structure includes rail track 100, stand 200, spacing and complementary unit and track fastening device. Wherein, spacing and complementary unit is equipped with rail track 100 bottom position, for this rail track 100 provides restriction and support, later compress tightly rail track 100 through track fastening device on fixed and stand 200's top end face, guarantee rail track 100 self firm, and then effectual noise that reduces the vibration and produce when guaranteeing that the train normally passes. The utility model discloses a be applicable to urban railway damping track bridge structure, through the design of low high double-deck non-linear appearance, there is the backing plate of increaseing in the track outside, is applicable to and lays 60 kg/h's rail section, and it has advantages such as elastic element easily dismantles, the pretightning force is adjustable. Meanwhile, the rail lower elevation base plate 11 and the plate lower elevation base plate 12 can effectively isolate vibration, and damage of trains caused by vibration when passing through the rail bridge is reduced.
As shown in fig. 1, 2 and 3, the spacing and auxiliary mechanism is disposed between the rail track 100 and the pillar 200, and provides spacing and support for the rail track 100, and at the same time, absorbs the vibration generated by the train passing through the rail track 100 to reduce the noise generated thereby. The limiting and auxiliary mechanism comprises a rail lower backing plate 1, an upper iron backing plate 2, a middle pad 3, a lower iron backing plate 4, a coupling plate 5, a bottom plate connecting sleeve 6, a nine-gauge block 9, an eleven-gauge block 10, a rail lower heightening backing plate 11 and a plate lower heightening backing plate 12. Wherein, the upper iron backing plate 2 and the lower iron backing plate 4 are the main supporting structures of the limiting and auxiliary mechanism and are arranged between the steel rail and the upright post 200, the whole upper iron backing plate 2 is a rectangular plate with four corners provided with circular through holes, and the upper iron backing plate 2 is arranged below the bottom end surface of the rail track 100; the whole lower iron base plate 4 is a rectangular plate with four hollow round tables, the lower iron base plate 4 is arranged on the upper portion of the top end face of the stand column 200, preferably, the upper iron base plate 2 and the lower iron base plate 4 are QT460-10, the width of a flange groove of a rail and the operation safety are guaranteed, and the safety and the reliability of the railway vibration reduction rail bridge structure are further improved. Middle pad 3 is equipped with the rectangular plate of circular through-hole for locating the four corners between last iron backing plate 2 and the lower iron backing plate 4, and simultaneously, this middle pad 3 chooses for use natural rubber to make and evenly is equipped with the rectangular channel on its top face and bottom face, and this middle pad 3 is used for keeping apart last iron backing plate 2 and lower iron backing plate 4, avoids last iron backing plate 2 and 4 direct contact of lower iron backing plate, takes place to damage at the in-process of train operation, causes the potential safety hazard. Meanwhile, the middle cushion 3 can effectively absorb the vibration generated by the middle cushion by the natural rubber material and the rectangular groove, and further reduce the noise generated by the train operation. The whole of the rail lower height adjusting base plate 11 and the plate lower height adjusting base plate 12 are both in a distance plate-shaped structure, and the rail lower height adjusting base plate 11 is arranged on the top end face of the upper iron base plate 2; the lower raised pad 12 is disposed below the bottom end face of the lower iron pad 4. Preferably, the height-adjustable tie plate 11 and the height-adjustable tie plate 12 are made of Q235-a/high density polyethylene, on one hand, the number of the height-adjustable tie plate 11 and the height-adjustable tie plate 12 can be increased or decreased according to design requirements, so as to control the height of the rail track 100, and on the other hand, the height-adjustable tie plate 11 and the height-adjustable tie plate 12 can effectively buffer the impact and reduce the vibration generated when a train passes through the rail track 100, protect a roadbed and sleepers, electrically insulate a signal system, and improve the safety and reliability of the railway vibration-damping track bridge structure.
In addition, the whole rail lower cushion plate 1 is of a rectangular plate-shaped structure and is arranged between the bottom end face of the rail track 100 and the top end face of the rail lower heightening cushion plate 11, the rail lower cushion plate 1 is made of natural rubber, rectangular grooves are uniformly formed in the top end face and the bottom end face of the rail lower cushion plate 1, the rail lower cushion plate 1 can effectively absorb vibration generated by train running while the bottom end face of the rail track 100 and the top end face of the rail lower heightening cushion plate 11 are prevented from being in direct contact with each other, noise generated by the rail lower cushion plate is reduced, and applicability and reliability of the railway vibration reduction rail bridge structure are improved. The coupling plate 5 is a rectangular plate with circular through holes at four corners, and is disposed above the top end surface of the upright column 200 and below the bottom end surface of the plate-down elevating base plate 12, preferably, the coupling plate 5 is made of low density polyethylene, so as to ensure that the coupling plate 5 can stably absorb the load transferred by other components at the top thereof, and then uniformly and stably transfer the load borne by the coupling plate to the upright column 200, thereby ensuring the normal operation of the train. The bottom plate connecting sleeve 6 is a connecting piece made of glass fiber reinforced nylon 66, the bottom plate connecting sleeve 6 is arranged between the circular through hole of the upper iron base plate 2 and the hollow circular truncated cone of the lower iron base plate 4, the bottom plate connecting sleeve has good mechanical property, good heat resistance and excellent size stability, the stability of the railway vibration reduction track structure can be effectively guaranteed, looseness caused when load and vibration are borne is avoided, potential safety hazards are further caused, and the safety and the reliability of the railway vibration reduction track bridge structure are improved. The ninth gauge block 9 and the eleventh gauge block 10 are both parts made of glass fiber reinforced nylon 66, and are arranged at two ends of an I-shaped lower end beam of the rail track 100 so as to limit and compress the rail track 100, prevent the rail track 100 from loosening, and select gauge blocks of different models according to design requirements so as to ensure stable and reliable fixation of the rail track 100.
As shown in fig. 1, 2 and 3, the rail fastening mechanism includes a cover plate 7, a B-shaped elastic strip 8, a T-shaped bolt 13, a locknut 14, a flat washer 15, an anchor bolt 16, a double-layer spring washer 17 and a bolt sleeve 18. Bolt sleeve 18 is whole to be cavity tubular structure, and this track fastening device includes two these bolt sleeve 18, is inside stand 200 is located to the diagonal angle mutually, and the external wall of bolt sleeve 18 is equipped with the screw thread with the internal wall is jungle, is used for its self fixed mounting and anchor bolt 16 respectively, and this bolt sleeve 18 can effectually avoid anchor bolt 16 and stand 200 direct contact, prevents that anchor bolt 16 from taking place to warp and leading to the difficult condition such as taking out of bolt to take place. Anchor bolt 16 is whole to be equipped with the cylindric bolt of screw thread for the bottom, this anchor bolt 16 passes down the cavity round platform of iron backing plate 4 in proper order, the circular through-hole of heightening backing plate 12 under board and heightening backing plate 12 under the board, stretch into inside bolt sleeve 18, the component that passes it is fixed as a whole, preferably, this anchor bolt 16 chooses for use No. 45 steel to make, can guarantee self bear the load in can effectual guarantee this railway damping track bridge structure's stability, and then improve this railway damping track bridge structure's reliability. The whole apron 7 is for being equipped with circular through-hole rectangular plate, and is equipped with the stripe of cockscomb structure at its bottom face, and this apron 7 is located on the top face of bottom plate adapter sleeve 6, provides the support for double-deck spring washer 17, simultaneously, because this apron 7 bottom face is equipped with the stripe of cockscomb structure can effectual increase this apron 7 coefficient of friction, and then guarantees that it can not take place not hard up when bearing the vibration. The double-layer spring washer 17 is of an overall annular structure and is arranged between the bolt cap of the anchor bolt 16 and the top end face of the cover plate 7, preferably, the double-layer spring washer 17 is made of 60Si2Mn, the surface of the base plate connecting sleeve 6 can be effectively protected from being scratched, meanwhile, the pressure of a nut on the cover plate 7 is dispersed, and the safety and the stability of the railway vibration reduction track bridge structure are further improved.
Meanwhile, two T-shaped bolts 13 are arranged in the diagonal direction of the limiting and auxiliary mechanism, the arrangement direction of the T-shaped bolts 13 is opposite to the arrangement direction of the bolt sleeves 18 in a crossed manner, and bolt rods of the T-shaped bolts sequentially penetrate through reserved holes corresponding to the limiting and auxiliary mechanism from bottom to top until the top end face of the upper iron base plate 2 extends out. A B-type elastic strip 8 is further arranged on the top end face of the upper iron backing plate 2, and the B-type elastic strip 8 is made of 60Si2Mn spring steel and used for compressing the nine gauge blocks 9 and the rail track 100 so as to prevent the rail track 100 from loosening due to the load and vibration of a train. The top end of the B-shaped elastic strip 8 is provided with the annular flat washer 15, the flat washer 15 can play a role in reducing friction, isolating, preventing loosening and dispersing pressure, the stress of the bolt cap of the T-shaped bolt 13 can be effectively dispersed, and the applicability and the reliability of the railway vibration damping track bridge structure are further improved. The top end face of the flat washer 15 is also provided with a locknut 14, the locknut 14 is fixedly connected with the T-shaped bolt 13 through threads, stable pressure is provided for components connected with the T-shaped bolt 13, absolute resistance to vibration is generated by friction force of the internal threads while vibration is borne, and the purposes of preventing looseness and fixing the structure are achieved.
In addition, as shown in fig. 1, 4 and 5, the railway vibration-damping rail bridge structure can adjust the height of the rail track 100 by adjusting the rail lower raising plate 11 and the plate lower raising plate 12. Because the adhesion force in the running process of the train is mainly used for extruding the outer side of the rail track 100 through the wheel set, the outer side of the rail track 100 can be heightened, and the vibration effect is further effectively reduced; meanwhile, the rail track 100 is arranged at the top of the upright post 200, so that a space for overhauling the bottom of the train can be provided for the overhauling personnel, the overhauling and updating of the equipment at the bottom of the train are facilitated for the overhauling personnel, and the comprehensiveness of the railway vibration reduction rail bridge structure is further improved. The base station 300 can be arranged at the bottom of the upright column 200, so that the stress area of the bottom of the upright column 200 can be increased, the ground collapses due to train load, and the effect of fixing the upright column can be achieved; can also say that rail track 100 wraps up through the method that sets up protection structure external member 400 on rail track 100, this protection structure external member 400 cross-section is the rectangle form, is equipped with the shape of falling T dead slot downwards from the top, it is fixed in on stand 200 through the fastener after parcel rail track 100 finishes, this protection structure external member 400 can effectually avoid the produced ponding in tunnel top to the erosion of railway damping track bridge structure, further security and the comprehensive nature of this railway damping track bridge structure of improvement.
It will be understood by those skilled in the art that the foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included within the scope of the present invention.
Claims (10)
1. A vibration reduction track bridge structure suitable for urban railways is characterized by comprising a track (100), a stand column (200), a limiting and auxiliary mechanism and a track fastening mechanism; wherein the content of the first and second substances,
the rail track (100) is an I-shaped steel rail, and the upright column (200) is a steel upright column;
the limiting and assisting mechanism comprises a rectangular plate-shaped upper iron base plate (2) with hollow round tables at four corners and a rectangular plate-shaped lower iron base plate (4) with round through holes at four corners below the upper iron base plate (2) and the lower iron base plate (4), the upper iron base plate (2) and the lower iron base plate (4) are arranged between the rail track (100) and the stand column (200), the top end face of the upper iron base plate (2) is provided with a rail lower base plate (1), the upper iron base plate (2) is prevented from being in direct contact with the rail track (100) while vibration is absorbed, a middle pad (3) is arranged between the upper iron base plate (2) and the lower iron base plate (4), the upper iron base plate (2) and the lower iron base plate (4) are prevented from being in direct contact, eleven gauge blocks (10) are arranged on two sides of an outer side track of the rail track (100), and nine gauge blocks (9) are arranged on two sides of an inner side, -compacting the rail track (100);
the rail fastening mechanism is arranged on two sides of a single-side steel rail of the rail track (100), the bolt sleeve (18) is arranged on the top end surface of the upright post (200), the anchoring bolt (16) is connected and arranged in the bolt sleeve (18) through threads, the limiting and auxiliary mechanism is fixed on the upright post (200) by the anchoring bolt (16), the cover plate (7) is arranged on the top end surface of the hollow round table of the upper iron base plate (2), meanwhile, the internal components are protected, a T-shaped bolt (13) passes through the reserved hole of the limiting and auxiliary mechanism, the top of the rail track is provided with a B-shaped elastic strip (8), the B-shaped elastic strip (8) is in contact with the nine gauge block (9), the eleven gauge block (10) and the rail track (100), and a locknut (14) is arranged at the top of the B-shaped elastic strip (8) around the top of the T-shaped bolt (13) to tightly press and fix the limiting and auxiliary mechanism and the rail track (100).
2. The urban railway vibration reduction track bridge structure according to claim 1, wherein the limiting and assisting mechanism further comprises a rail down-regulating high-pressure pad (11) arranged at the lower part of the bottom end face of the rail lower-pressure pad (1), and a plate down-regulating high-pressure pad (12) arranged below the bottom end face of the lower iron pad (4), and both the rail down-regulating high-pressure pad (11) and the plate down-regulating high-pressure pad (12) are made of high-density polyethylene.
3. The urban railway vibration-damping track bridge structure according to claim 2, wherein the limiting and auxiliary mechanism further comprises a coupling plate (5) arranged below the bottom end surface of the plate lower elevation base plate (12) for centralized stress.
4. A vibration-damping track bridge structure for urban railways according to claim 1, characterized in that the track fastening mechanism further comprises a flat washer (15) provided on the bottom end face of the locknut (14), and a double-layer spring washer (17) provided on the bottom of the bolt cap of the anchor bolt (16).
5. The urban railway vibration damping track bridge structure according to claim 1, wherein the B-shaped elastic strips (8) are made of spring steel.
6. The vibration-damping track bridge structure suitable for the urban railways according to claim 1 is characterized in that rectangular groove-shaped structures are arranged on two end faces of the middle cushion (3) and the lower rail cushion plate (1).
7. A city railway shock absorbing track bridge structure according to claim 1, wherein the bolt sleeve (18) is made of glass fiber reinforced nylon and is provided with threads on both its inner and outer walls.
8. A vibration-damping track bridge structure for urban railways according to claim 2, characterized in that the outer track of the rail track (100) is elevated by the rail lower elevation pad (11) and the plate lower elevation pad (12).
9. The structure of a vibration-damping railway bridge suitable for urban railways according to any one of claims 1 to 8, characterized in that the bottom of the upright (200) is provided with a concrete base (300) for evenly dispersing the load transmitted by the upright (200).
10. A vibration-damping track bridge structure for urban railways according to any one of claims 1 to 8, characterized in that a protective structure kit (400) is provided on the track (100).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921848417.8U CN211922097U (en) | 2019-10-30 | 2019-10-30 | Vibration reduction track bridge structure suitable for urban railway |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921848417.8U CN211922097U (en) | 2019-10-30 | 2019-10-30 | Vibration reduction track bridge structure suitable for urban railway |
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| CN211922097U true CN211922097U (en) | 2020-11-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114790668A (en) * | 2022-04-25 | 2022-07-26 | 上海工程技术大学 | Low-height vibration reduction fastener with side baffles |
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2019
- 2019-10-30 CN CN201921848417.8U patent/CN211922097U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114790668A (en) * | 2022-04-25 | 2022-07-26 | 上海工程技术大学 | Low-height vibration reduction fastener with side baffles |
| CN114790668B (en) * | 2022-04-25 | 2024-02-27 | 上海工程技术大学 | Low-height vibration reduction fastener with side block |
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