CN118375050B - Railway T roof beam prevents roof beam protection architecture that falls - Google Patents
Railway T roof beam prevents roof beam protection architecture that falls Download PDFInfo
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- CN118375050B CN118375050B CN202410808448.XA CN202410808448A CN118375050B CN 118375050 B CN118375050 B CN 118375050B CN 202410808448 A CN202410808448 A CN 202410808448A CN 118375050 B CN118375050 B CN 118375050B
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- 239000010720 hydraulic oil Substances 0.000 claims abstract description 7
- 230000007246 mechanism Effects 0.000 claims description 19
- 230000007704 transition Effects 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000006978 adaptation Effects 0.000 claims 1
- 238000013016 damping Methods 0.000 abstract description 21
- 238000005381 potential energy Methods 0.000 abstract description 4
- 238000007789 sealing Methods 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 description 14
- 230000000694 effects Effects 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to the technical field of bridge fittings, and particularly discloses a railway T-beam falling-preventing protection structure, which comprises a plurality of groups of hydraulic dampers and springs, wherein two ends of each hydraulic damper and each spring are respectively connected with a bridge pier and a box beam, each hydraulic damper comprises a sleeve and a slide rod, hydraulic oil is filled in each sleeve, the top of each sleeve is in sealing sliding connection with each slide rod, and the hydraulic damper further comprises: the piston assembly divides the interior of the sleeve into an upper cavity and a lower cavity, the piston assembly comprises a piston block which is arranged in the sleeve in a sliding manner, an inverted cone-shaped hole which penetrates through the piston block from top to bottom is formed in the axis of the piston block, after the elastic coefficient of the spring is reduced, the two adjusting blocks are far away from each other, when the spring is compressed, the flow area of a communication channel between the piston block and the flow guiding block is gradually reduced, so that the damping force is increased, and when the spring releases elastic potential energy to reset, the flow area of the communication channel between the piston block and the flow guiding block is increased, so that the damping force is reduced.
Description
Technical Field
The invention relates to the technical field of bridge fittings, in particular to a railway T-beam falling-preventing protection structure.
Background
The box girder of the reinforced concrete structure is divided into a prefabricated box girder and a cast-in-situ box girder. The box girder combined bridge girder erection machine prefabricated in the independent place can be erected after the lower engineering is completed, so that the engineering progress can be accelerated, and the construction period can be saved; cast-in-situ box girders are mostly used for large continuous bridges. The box girder is connected with the bridge pier through the girder falling preventing device, and if the special load effect such as an earthquake is met, the girder falling preventing device can buffer the transverse displacement or the longitudinal displacement of the box girder, so that disasters such as bridge deck inclination and box girder deflection are reduced.
The Chinese patent document with the authorized bulletin number of CN112144379B discloses an assembled buffering beam falling prevention device, which comprises a pier, wherein a vertically arranged anti-collision plate is fixed at the top of the pier, the anti-collision plate coincides with the center line of the pier, fixing frames are symmetrically arranged on two sides of the anti-collision plate, and the movable ends of the fixing frames are hinged with connecting plates; two sections of girder bodies are symmetrically arranged on the bridge pier, the end faces of the girder bodies are provided with chambers for accommodating the connecting plates, the bottom wall in each chamber is provided with an access opening, the width of each access opening is larger than that of the connecting plates and the fixing frame, the connecting plates are hinged with connecting rods, each connecting rod consists of a spring and a telescopic rod, and the movable ends of the connecting rods extend out of the access openings and are detachably connected to the bridge pier; the inner walls of the two sides of the cavity are horizontally hinged with a plurality of hydraulic dampers, each hydraulic damper consists of a sleeve and a slide rod, and one end of each slide rod is detachably hinged on the connecting plate.
After the beam falling prevention device is used for a period of time, the spring can be reduced in elastic coefficient due to material fatigue, so that when the damping coefficient of the damper is unchanged, the buffer distance is prolonged, the spring rebound is slowed down, the damping effect is deteriorated, and the safety problem possibly exists.
Disclosure of Invention
The invention provides a railway T-beam falling-preventing protection structure, which aims to solve the problem that the damping effect is poor when the spring elastic coefficient is reduced and the damping coefficient of a damper is unchanged in the related art.
The utility model provides a roof beam protection architecture that falls is prevented to railway T roof beam, includes multiunit hydraulic damper and spring, and hydraulic damper and spring's both ends are connected with pier and case roof beam respectively, hydraulic damper includes sleeve and slide bar that inside is filled with hydraulic oil, telescopic top and slide bar seal sliding connection, hydraulic damper still includes:
the piston assembly divides the interior of the sleeve into an upper cavity and a lower cavity, the piston assembly comprises a piston block arranged in the sleeve in a sliding manner, an inverted conical hole penetrating up and down is formed in the axis of the piston block, an inverted conical flow guide block is arranged in the inverted conical hole, the flow guide block is fixedly arranged at one end of the sliding rod positioned in the sleeve, and a communication channel for communicating the upper cavity and the lower cavity is formed between the piston block and the flow guide block;
The adjusting assembly comprises two adjusting blocks arranged on the sliding rod and a moving mechanism arranged on the sliding rod and used for adjusting the distance between the two adjusting blocks, a limiting block is arranged at the top end of the piston block, and the top of the limiting block is located between the adjusting blocks, so that the top of the limiting block is limited to slide between the two adjusting blocks.
The effect is that: after the elastic coefficient of the spring is reduced, the two adjusting blocks are separated from each other by a certain distance, so that the limiting block can move between the two adjusting blocks, when the bridge vibrates, the flow area of the communication channel between the piston block and the flow guiding block is gradually reduced when the spring is compressed, so that the damping force is increased, the damping force is increased when the spring is compressed, and when the spring releases elastic potential energy to reset, the flow area of the communication channel between the piston block and the flow guiding block is increased, so that the damping force is reduced, and the influence caused by the reduction of the elastic coefficient of the spring is compensated.
Preferably, the motion includes the fixed thread bush that sets up in the slide bar bottom, the bottom and the water conservancy diversion piece fixed connection of thread bush are provided with two sections in the thread bush and revolve to different screw threads, and two regulating blocks all set up in the thread bush and respectively with two sections screw thread engagement, the motion is still including being used for driving two regulating block synchronous revolution's actuating mechanism, its effect lies in: the two adjusting blocks are driven to rotate so as to be separated or separated from each other, and therefore the sliding range of the limiting block relative to the adjusting blocks is adjusted.
Preferably, the axis department of slide bar has seted up the through-hole that link up from top to bottom, actuating mechanism is including rotating the pivot that sets up in the through-hole, and the bottom of pivot be six prismatic and with two regulating block sliding connection, the gear train is installed at the top of pivot, and the input of gear train is provided with the actuating head.
Preferably, the inner wall of the inverted cone hole and the side of the flow guide block are provided with a plurality of raised strips in a circumferential array manner, the lower half part of the inner wall of the inverted cone hole is provided with a plurality of first bumps arranged in a circumferential array manner, the upper half part of the side of the flow guide block is provided with a plurality of second bumps arranged in a circumferential array manner, the first bumps and the second bumps are triangular in vertical section, one side of each of the two triangular sections, which is close to each other, are parallel, and a rotating mechanism for controlling the piston block to rotate relative to the flow guide block is arranged in the sleeve, so that the flow guide block has the effects that: the rotary mechanism controls the first and second lugs to overlap and stagger on the horizontal projection plane to change the flow area of hydraulic oil and the size of turbulent flow, thereby changing the damping force.
Preferably, the rotary mechanism comprises a slide group arranged on the slide bar, the slide group comprises two limiting slides, the limiting slides are arranged along the length direction of the slide bar, an extension block is fixedly connected to the piston block, a bolt is slidably arranged at the top of the extension block, a pressure spring is arranged between the extension block and the bolt, a position, close to the top end, of the inner wall of the sleeve is provided with a deflection slide matched with the bolt, the bolt enters from one end of the deflection slide and reaches the other end of the deflection slide, the piston block is changed into a final state from an initial state, one end of the bolt is positioned in one of the limiting slides, a first projection and a second projection overlap on the projection of a horizontal plane, one end of the bolt is positioned in the other limiting slide, and the first projection and the second projection on the projection of the horizontal plane are staggered mutually, and the rotary mechanism has the advantages that: when an earthquake occurs, the piston block enables the bolt to move to reach the spiral section due to the fact that the amplitude is large, one end of the bolt is separated from the limiting slide way under the action of the pressure spring, then the other end of the bolt enters the spiral section and moves to the vertical section along the spiral section, one end of the bolt enters the other limiting slide way, and accordingly the piston block is kept at a rotated angle, and the first protruding block and the second protruding block are automatically staggered when the earthquake occurs.
Preferably, the deflection slide comprises a spiral section and a vertical section, the top end of the spiral section is communicated with the middle part of the vertical section, and the bottom end of the spiral section and the two ends of the vertical section are in smooth transition with the inner wall of the sleeve.
Preferably, the number of the deflection slide ways, the slide way groups and the extension blocks is two, and the deflection slide ways, the slide way groups and the extension blocks are rotationally symmetrical with the axis of the slide bar.
Preferably, the sleeve and the sliding rod are provided with hinge seats at the ends far away from each other for being hinged with the bridge pier or the box girder.
By adopting the technical scheme, the invention has the beneficial effects that:
In the initial state, the two regulating blocks clamp the top of the limiting block, thereby make the piston block move synchronously along with the guide block, after the elastic coefficient of the spring is reduced, make the driving head rotate through the tool, thereby make the pivot rotate, thereby make the two regulating blocks rotate, the regulating blocks keep away from each other, thereby make the limiting block can move between two regulating blocks, when the bridge shakes, the spring is compressed, the slide bar slides inwards the sleeve, at this moment, the communication channel flow area between piston block and guide block gradually decreases, thereby increase damping force, until the regulating block above is against the limiting block, make limiting block and guide block keep a certain offset distance, then move synchronously to the sleeve bottom, thereby increase damping force when the spring compresses, when the spring releases elastic potential energy to reset, the slide bar slides outwards the sleeve, the communication channel flow area between piston block and guide block increases, thereby reduce damping force, until the regulating block below is against the limiting block, make limiting block keep a certain offset distance with guide block, then move synchronously to the sleeve top, thereby reduce damping force when the spring resets, thereby compensating the influence that the elastic coefficient of the spring becomes smaller.
Drawings
Fig. 1is a schematic view of the structure of the present invention mounted on a T-beam.
Fig. 2 is a schematic perspective view of the present invention.
Fig. 3 is a schematic structural diagram of a slide set according to the present invention.
Fig. 4 is a schematic structural view of an adjusting assembly in the present invention.
Fig. 5 is a schematic structural view of a piston block according to the present invention.
Fig. 6 is a schematic structural view of a deflection slide rail in the present invention.
Fig. 7 is a sectional view of the piston assembly of the present invention in an initial state.
Fig. 8 is a cross-sectional view of another angle of the piston assembly of the present invention in its initial state.
Fig. 9 is a cross-sectional view of the piston assembly of the present invention in its final state.
Fig. 10 is a cross-sectional view of another angle of the piston assembly of the present invention in its final state.
Reference numerals:
1. A hydraulic damper; 11. a sleeve; 111. a shifting slideway; 1111. a helical section; 1112. a vertical section; 12. a slide bar; 121. a slideway group; 13. a piston assembly; 131. a piston block; 1311. a first bump; 1312. an extension block; 1313. a plug pin; 1314. a pressure spring; 132. a flow guiding block; 1321. a second bump; 133. a limiting block; 14. an adjustment assembly; 141. an adjusting block; 142. a movement mechanism; 1421. a thread sleeve; 1422. a rotating shaft; 1423. a gear set; 2. and (3) a spring.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
As shown in fig. 1-6, the railway T-beam falling protection structure comprises a hydraulic damper 1 and a spring 2, wherein one hydraulic damper 1 and one spring 2 are a group, and two ends of a plurality of groups of hydraulic dampers 1 and springs 2 are respectively connected with a bridge pier and a box girder.
The hydraulic damper 1 consists of a sleeve 11 and a slide bar 12, hydraulic oil is filled in the sleeve 11, the slide bar 12 is connected to an end cover of the sleeve 11 in a sliding manner, a piston assembly 13 is mounted at one end of the slide bar 12 positioned in the sleeve 11, and the piston assembly 13 divides the interior of the sleeve 11 into an upper chamber and a lower chamber.
The piston assembly 13 comprises a piston block 131 which is arranged in the sleeve 11 in a sliding manner, limiting blocks 133 are symmetrically arranged at the top end of the piston block 131, the outer wall of the piston block 131 is attached to the inner wall of the sleeve 11, an inverted conical hole which penetrates through the piston block 131 vertically is formed in the axis of the piston block 131, an inverted conical guide block 132 is arranged in the inverted conical hole, the guide block 132 is fixedly arranged at one end of the sliding rod 12, which is located in the sleeve 11, a communication channel for communicating the upper cavity and the lower cavity is formed between the piston block 131 and the guide block 132, and an adjusting assembly 14 for controlling the relative positions of the piston block 131 and the guide block 132 is arranged on the sliding rod 12.
The adjusting component 14 comprises two adjusting blocks 141 which are arranged on the slide rod 12 and are circular, and a moving mechanism 142 which is arranged on the slide rod 12 and is used for adjusting the distance between the two adjusting blocks 141, the top of the limiting block 133 protrudes towards the axis direction of the slide rod 12, the protruding part is located between the two adjusting blocks 141, the moving mechanism 142 comprises a threaded sleeve 1421 which is fixedly arranged at the bottom end of the slide rod 12, the bottom end of the threaded sleeve 1421 is fixedly connected with the guide block 132, two sections of threads which are different in rotation direction are arranged in the threaded sleeve 1421, the two adjusting blocks 141 are respectively arranged in the threaded sleeve 1421 and are respectively engaged with the two sections of threads, a through hole which is vertically communicated is formed in the axis of the slide rod 12, a rotating shaft 1422 is penetrated in the through hole, the bottom end of the rotating shaft 1422 is in the shape of a hexagonal prism, a gear set 1423 is arranged at the top of the rotating shaft 1422, the input end of the gear set 1423 is provided with a driving head, and the driving head is rotated by a motor or a manual tool, so that the two adjusting blocks 141 are rotated, and the two adjusting blocks 141 are mutually far away from or are mutually separated.
Working principle: in the initial state, two regulating blocks 141 clamp the top of the limiting block 133, thereby make the piston block 131 move synchronously along with the guide block 132, after the elastic coefficient of the spring 2 is reduced, make the driving head rotate through the tool, thereby make the pivot 1422 rotate, thereby make two regulating blocks 141 rotate, the regulating blocks 141 keep away from each other, thereby make the limiting block 133 can move between two regulating blocks 141, when the bridge shakes, the slide bar 12 slides in the sleeve 11 when the spring 2 is compressed, thereby make the guide block 132 slide to sleeve 11 bottom, the piston block 131 is motionless, at this moment, the communication channel flow area between piston block 131 and the guide block 132 gradually decreases, thereby increase the damping force, until the regulating block 141 above is against the limiting block 133, make the limiting block 133 keep a certain stagger distance with the guide block 132, then synchronously move to sleeve 11 bottom, thereby increase the damping force when the spring 2 releases elastic potential energy to reset, thereby make the guide block 132 slide to sleeve 11 top, the piston block 131 is motionless, thereby make the communication channel flow area between piston block 131 and guide block 132 decrease, thereby reducing the elastic coefficient of the guide block 132 and then the guide block 132 is offset along with the direction of the guide block 132, thereby reducing the elastic coefficient of the guide block 2, thereby reducing the communication channel flow area between the guide block 132 and the guide block 132, thereby reducing the influence the damping force, thereby reducing the elastic coefficient of the guide block, and the guide block is moved.
Since the optimal damping force of the hydraulic damper 1 required in the normal state and the seismic state is different, the following settings are set:
The inner wall of the inverted cone hole and the side surface of the guide block 132 are provided with a plurality of raised strips in a circumferential array manner, the lower half part of the inner wall of the inverted cone hole is provided with four first protruding blocks 1311 which are arranged in a circumferential array manner, the upper half part of the side surface of the guide block 132 is provided with four second protruding blocks 1321 which are arranged in a circumferential array manner, the vertical cross sections of the first protruding blocks 1311 and the second protruding blocks 1321 are triangular, the two adjacent triangular sides are parallel, the side surfaces of the first protruding blocks 1311 and the second protruding blocks 1321 which are adjacent to each other are one eighth of the round table side surfaces, a rotating mechanism for controlling the piston block 131 to rotate by 45 degrees relative to the guide block 132 is arranged in the sleeve 11, in an initial state, the centers of the first protruding blocks 1311 and the second protruding blocks 1321 which are adjacent to each other are located in the same vertical plane, the first protruding blocks 1311 and the second protruding blocks 1321 are overlapped on the horizontal projection plane, and are switched to a final state when an earthquake happens.
The rotary mechanism comprises two slide rail groups 121 which are rotationally symmetrically arranged on the axis of the slide rod 12, each slide rail group 121 comprises two limiting slide rails, each limiting slide rail is arranged along the length direction of the slide rod 12, two symmetrically arranged extending blocks 1312 are fixedly connected to each piston block 131, each bolt 1313 is slidably arranged at the top of each extending block 1312, a pressure spring 1314 is arranged between each extending block 1312 and each bolt 1313, a position, close to the top end, of the inner wall of each sleeve 11 is provided with a displacement slide rail 111 which is matched with each bolt 1313, each displacement slide rail 111 comprises a spiral section 1111 and a vertical section 1112, the spiral number of turns of each spiral section 1111 is one eighth, the top end of each spiral section 1111 is communicated with the middle of each vertical section 1112, both ends of each vertical section 1112 are in smooth transition with the inner wall of each sleeve 11, each bolt 1313 is changed from an initial state to a final state after each bolt 1111 enters the vertical section 1112 from the spiral section, one end of each bolt 1313 is positioned in one limiting slide rail, the centers of each adjacent first lug 1311 and second lug 1321 are positioned in the same vertical plane, one end of each bolt 1313 is positioned in the other limiting slide rail, and projection of the first lug 1321 and second lug 1321 are staggered on the horizontal plane.
Working principle: in the initial state, the centers of the adjacent first lug 1311 and the adjacent second lug 1321 are located in the same vertical plane (as shown in fig. 7), and the positions of the inverted cone-shaped hole and the guide block 132, where the first lug 1311 is not located and the second lug 1321 is not located, are opposite (as shown in fig. 8), so that hydraulic oil flows along the length direction of the protruding strip during circulation, when an earthquake occurs, through the communication channel, due to the fact that the amplitude becomes larger, the piston block 131 moves the plug 1313 to reach the spiral section 1111, one end of the plug 1313 breaks away from the limit slide way under the action of the pressure spring 1314, then the other end of the plug 1313 enters the spiral section 1111 and moves to the vertical section 1112 along the spiral section 1111, so that one end of the plug 1313 moves to the position of the other limit slide way, then the plug 1313 moves upwards or downwards to enable one end of the plug 1313 to enter the other limit slide way, so that the plug 131 keeps the angle after rotation, at this time, because the first lug 1311 and the second lug 1321 are mutually staggered (as shown in fig. 9 and 10), one part of hydraulic oil crosses the protruding strip in the flow direction of the communication channel, and the damping coefficient is simultaneously generated, and the damping coefficient is better than in the initial state when the damping coefficient is generated.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (8)
1. The utility model provides a roof beam protection architecture falls is prevented to railway T roof beam, includes multiunit hydraulic damper (1) and spring (2), and the both ends of hydraulic damper (1) and spring (2) are connected with pier and case roof beam respectively, hydraulic damper (1) are including sleeve (11) and slide bar (12) that inside is filled with hydraulic oil, and the top and the slide bar (12) of sleeve (11) seal sliding connection, a serial communication port, hydraulic damper (1) still include:
The piston assembly (13), the piston assembly (13) divides the interior of the sleeve (11) into an upper cavity and a lower cavity, the piston assembly (13) comprises a piston block (131) which is arranged in the sleeve (11) in a sliding manner, an inverted conical hole which penetrates up and down is formed in the axis of the piston block (131), an inverted conical guide block (132) is arranged in the inverted conical hole, the guide block (132) is fixedly arranged at one end of the sliding rod (12) which is positioned in the sleeve (11), and a communication channel for communicating the upper cavity and the lower cavity is formed between the piston block (131) and the guide block (132);
The adjusting assembly (14) comprises two adjusting blocks (141) arranged on the sliding rod (12) and a moving mechanism (142) arranged on the sliding rod (12) and used for adjusting the distance between the two adjusting blocks (141), a limiting block (133) is arranged at the top end of the piston block (131), and the top of the limiting block (133) is located between the adjusting blocks (141), so that the top of the limiting block (133) is limited to slide between the two adjusting blocks (141).
2. The railway T-beam falling protection structure according to claim 1, wherein the movement mechanism (142) comprises a thread sleeve (1421) fixedly arranged at the bottom end of the sliding rod (12), the bottom end of the thread sleeve (1421) is fixedly connected with the guide block (132), two sections of threads with different rotation directions are arranged in the thread sleeve (1421), the two adjusting blocks (141) are both arranged in the thread sleeve (1421) and are respectively engaged with the two sections of threads, and the movement mechanism (142) further comprises a driving mechanism for driving the two adjusting blocks (141) to synchronously rotate.
3. The railway T-beam falling protection structure according to claim 2, wherein a through hole penetrating up and down is formed in an axis of the sliding rod (12), the driving mechanism comprises a rotating shaft (1422) rotatably arranged in the through hole, a bottom end of the rotating shaft (1422) is in a hexagonal prism shape and is slidably connected with the two adjusting blocks (141), a gear set (1423) is mounted at the top of the rotating shaft (1422), and a driving head is arranged at an input end of the gear set (1423).
4. The railway T-beam falling protection structure according to claim 1, wherein a plurality of raised strips are circumferentially arranged on the inner wall of the inverted conical hole and the side surface of the guide block (132), a plurality of first protrusions (1311) circumferentially arranged in array are arranged at the lower half part of the inner wall of the inverted conical hole, a plurality of second protrusions (1321) circumferentially arranged in array are arranged at the upper half part of the side surface of the guide block (132), the vertical cross sections of the first protrusions (1311) and the second protrusions (1321) are triangular, one side, close to the two triangles, of each other is parallel, and a rotating mechanism for controlling the piston block (131) to rotate relative to the guide block (132) is arranged in the sleeve (11).
5. The railway T-beam falling protection structure according to claim 4, wherein the rotation mechanism comprises a slide rail group (121) arranged on the slide bar (12), the slide rail group (121) comprises two limit slide rails, the limit slide rails are arranged along the length direction of the slide bar (12), an extension block (1312) is fixedly connected to the piston block (131), a bolt (1313) is slidingly arranged at the top of the extension block (1312), a pressure spring (1314) is arranged between the extension block (1312) and the bolt (1313), the position that sleeve (11) inner wall is close to the top is provided with the slide (111) that shifts with bolt (1313) looks adaptation, and after bolt (1313) got into and reachd slide (111) other end from slide (111) one end that shifts, piston piece (131) become final state from initial state, and one end of bolt (1313) is located one of them spacing slide under the initial state, and projection on the horizontal plane overlaps first lug (1311) and second lug (1321), and under final state, one end of bolt (1313) is located another spacing slide, projection on the horizontal plane first lug (1311) and second lug (1321) stagger each other.
6. The railway T-beam falling protection structure according to claim 5, wherein the deflection slide way (111) comprises a spiral section (1111) and a vertical section (1112), the top end of the spiral section (1111) is communicated with the middle part of the vertical section (1112), and the bottom end of the spiral section (1111) and the two ends of the vertical section (1112) are in smooth transition with the inner wall of the sleeve (11).
7. The railway T-beam drop protection structure according to claim 6, wherein the number of the deflection slide ways (111), the slide way group (121) and the extension block (1312) is two and the slide bars (12) are arranged in a rotationally symmetrical manner.
8. The railway T-beam fall protection structure according to any one of claims 1 to 7, wherein the sleeve (11) and the slide bar (12) are provided with hinge seats at their ends remote from each other for hinge connection with a bridge pier or a box girder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410808448.XA CN118375050B (en) | 2024-06-21 | 2024-06-21 | Railway T roof beam prevents roof beam protection architecture that falls |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410808448.XA CN118375050B (en) | 2024-06-21 | 2024-06-21 | Railway T roof beam prevents roof beam protection architecture that falls |
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| Publication Number | Publication Date |
|---|---|
| CN118375050A CN118375050A (en) | 2024-07-23 |
| CN118375050B true CN118375050B (en) | 2024-08-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202410808448.XA Active CN118375050B (en) | 2024-06-21 | 2024-06-21 | Railway T roof beam prevents roof beam protection architecture that falls |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107269202A (en) * | 2016-04-06 | 2017-10-20 | 亿丰综合工业股份有限公司 | Louvered curtain |
| CN108385993A (en) * | 2018-02-14 | 2018-08-10 | 重庆交通大学 | Junk prevention for building damps catching device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201925398U (en) * | 2010-10-28 | 2011-08-10 | 广州大学 | Large-stroke double-piston-rod viscous damper with elastic axial limit function |
| WO2019014726A1 (en) * | 2017-07-20 | 2019-01-24 | Innoshock Pty Ltd | Suspension damping system |
| KR102299809B1 (en) * | 2021-02-23 | 2021-09-08 | 주식회사 제이유테크기술사사무소 | Variable viscosity damper for vibration insulation and vibration isolator equipped with the same |
| CN217177263U (en) * | 2022-01-10 | 2022-08-12 | 浙江金波减震器制造有限公司 | New energy automobile battery bumper shock absorber |
| CN220509005U (en) * | 2023-07-12 | 2024-02-20 | 苏州裕鑫昌电子科技有限公司 | BMS board test fixture |
| CN117569178A (en) * | 2023-11-21 | 2024-02-20 | 山东高速工程建设集团有限公司 | Easily reset multistage anti-seismic anchor bolt and bridge |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107269202A (en) * | 2016-04-06 | 2017-10-20 | 亿丰综合工业股份有限公司 | Louvered curtain |
| CN108385993A (en) * | 2018-02-14 | 2018-08-10 | 重庆交通大学 | Junk prevention for building damps catching device |
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