CN204475158U - Modular multi-directional deflection comb plate, comb joint stretching device - Google Patents
Modular multi-directional deflection comb plate, comb joint stretching device Download PDFInfo
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- CN204475158U CN204475158U CN201520089047.XU CN201520089047U CN204475158U CN 204475158 U CN204475158 U CN 204475158U CN 201520089047 U CN201520089047 U CN 201520089047U CN 204475158 U CN204475158 U CN 204475158U
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Abstract
The utility model relates generally to a kind of modular multi-directional deflection comb plate, comb joint stretching device, comprises concrete box girder A and concrete box girder B, is provided with and lets out dirty groove, and connected by portable plate between concrete box girder A and concrete box girder B; And adopt spherical tension compression bearing structure to have superior level, vertical corner performance as multi-directional deflection mechanism, superior structural performance, excellent durability, waterproof, anti-impurity, noise control and damping performance are better, and install, change conveniently, running cost is low, bearing capacity is strong, good reliability, the advantages such as anti-fatigue life is long, are suitable for applying.
Description
Technical field
The utility model belongs to bridge extension joint field, relates to a kind of modular multi-directional deflection comb plate, comb joint stretching device specifically.
Background technology
Bridge extension joint is to meet bridge deck structure distortion, and makes vehicle smoothly pass the needs of bridge floor, the general name of the device arranged at bridge floor expansion joint place.
The requirement of bridge to stretching device is as follows:
1, the free-extension that bridge is caused by brake force, variations in temperature and concrete shrinkage and creep etc. can be adapted to;
2, the corner reciprocal that bridge is caused by amount of deflection change etc. can be adapted to;
3, the structure selecting rideability good, has good reduction noise, vibrationproof and shockproof requirements;
4, there is good globality, high rigidity and durability;
5, there is good drainage and water proofing property;
6, the end that the bridge deck of stretching device are set is strengthened;
7, simple structure, easy construction, maintenance cost are low.
At present, bridge extension joint mainly contains rubber type stretching device, deformed steel formula stretching device, comb-type telescoping device etc.And comb-type telescoping device because of its travelling and persistence relatively good, therefore extensively to be adopted in the industry.But there is the problem of following several respects in common its performance of common comb-type telescoping device:
(1) bridge lateral level angle is smaller: common comb-type telescoping device adopts rotary shaft as multi-directional deflection mechanism, the large tooth plate of each unit has 3 points to be fixed on modified gear, and modified gear is primarily of compositions such as rotating shaft, pressing plate, holder and anchor bolts; Holder self cannot realize the rotation of large tooth plate, and the gap between large tooth plate and little tooth plate can only be leaned on to adapt to direction across bridge level angle, and bridge lateral level angle is difficult to reach 0.01rad.
(2) friction surface wear Performance Ratio is poor: because large tooth plate frequently rotates under the impact of vehicle, and the rotating shaft of common comb-type telescoping device can produce wearing and tearing, can produce gap after rotating shaft wearing and tearing, impact and strengthen, need to be serviced, to eliminate the gap that wearing and tearing produce, otherwise stretching device should destroy.
(3) supporting capacity is poor: the rotating shaft compression area that each large tooth plate of common comb-type telescoping device is fixed is little, and rotating shaft will be subject to certain shearing force, and vertical bearing capacity is less.Improve bearing capacity, rotating shaft diameter will increase.
Summary of the invention
Goal of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the utility model proposes a kind of modular multi-directional deflection comb plate, comb joint stretching device, effectively increasing level angle, improve friction surface wear performance and supporting capacity, extend application life.
Technical scheme
A kind of modular multi-directional deflection comb plate, comb joint stretching device, is comprised concrete box girder A and concrete box girder B, it is characterized in that: be provided with between concrete box girder A and concrete box girder B and let out dirty groove, and connected by portable plate; Concrete box girder A is provided with fixed head preformed groove, and in fixed head preformed groove, be provided with fixed head leave a door unlocked in advance muscle, fixed head is connected with vibration damper plate with the stainless steel slide plate below fixed head by fixed head fastening bolt, and vibration damper plate arranges the below of stainless steel slide plate; Fixed head fastening bolt is connected with fixed head preformed groove door muscle; Concrete box girder B is provided with portable plate preformed groove, in portable plate preformed groove, be provided with reserved dowel, and portable plate is connected with the upper base plate of the multi-directional deflection seat below portable plate by portable plate fastening bolt; Portable plate is connected with anti-rebound mechanism by the lower seat board of portable plate fastening bolt with the multi-directional deflection seat below portable plate; Portable plate fastening bolt and portable plate muscle of leaving a door unlocked in advance is connected; Portable plate is overlapped on one end of stainless steel slide plate and vibration damper plate.
Let out dirty groove side and be connected to fixed head side; Opposite side is connected to portable plate side, and forms groove.
Backlash compensation pad is bonded on rear side of portable plate.
The first template, the second template is made respectively on rear side of fixed head preformed groove and portable plate preformed groove and portable plate; Build C50 concrete in fixed head preformed groove and portable plate preformed groove, make itself and concrete box girder A and concrete box girder B form an entirety.
Portable plate is fixedly connected with by the upper base plate of portable plate fastening bolt with the multi-directional deflection seat below it near the side of concrete box girder B; The mid portion of portable plate is fixedly connected with the lower seat board of multi-directional deflection seat with at anti-rebound mechanism by anchor bolt.
Multi-directional deflection seat is made up of lower seat board, slide plate, sphere liner plate, upper base plate, sphere tetrafluoro plate and plane tetrafluoro plate; Lower seat board bottom surface welding slide plate, the plane tetrafluoro plate being embedded in sphere liner plate bottom slides in sled surface; Sphere tetrafluoro plate is embedded in below upper base plate in spherical groove, and sphere tetrafluoro plate slides on spherical bush cricket face; Lower seat board and upper base plate adopt quincunx falcon groove to be connected, and both contact surfaces are half-circle-arc shape.
Advantage and effect
The utility model have employed spherical tension compression bearing structure as multi-directional deflection mechanism, and tool has the following advantages and good effect:
(1) vibration damper plate under spherical tension compression bearing, debounce mechanism, backlash compensation pad and tooth plate is adopted; Have corner, wearing and tearing automatic makeup reward function, level, vertical rotating are flexible, and level angle can reach 0.02rad, and vertical corner can reach 0.05rad; Absorb the shock loading of vehicle, when vehicle passes through, impact force is little, and steadily, noise is little, and anti-fatigue life is long in driving; Bearing capacity is strong, good reliability.
(2) modular multi-directional deflection comb plate, comb joint stretching device bridge is to being a module by 1 meter, and each module is relatively independent, can change stretching device when uninterrupted traffic and keep in repair.
(3) modular multi-directional deflection comb plate, comb joint stretching device fitting depth is more shallow, is generally greater than 200mm and just can installs, very little to the structure influence of beam body.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
Fig. 2 is multi-directional deflection holder structure schematic diagram.
Description of reference numerals:
1, concrete box girder A, 2, fixed head preformed groove, 3, fixed head leaves a door unlocked muscle in advance, 4, fixed head fastening bolt, 5, fixed head, 6, stainless steel slide plate, 7, vibration damper plate, 8, portable plate, 9, let out dirty groove, 10, template, 11, anti-rebound mechanism, 12, anchor bolt, 13, multi-directional deflection seat, 14, template, 15, backlash compensation pad, 16, reserved dowel, 17, portable plate preformed groove, 18, concrete box girder B.
detailed description of the invention:
Below in conjunction with accompanying drawing, the utility model is described further:
The utility model relates to a kind of modular multi-directional deflection comb plate, comb joint stretching device, is applicable to highway concrete beam and concrete beam, concrete beam and steel box-girder, connection between steel box-girder and steel box-girder.
As shown in Figure 1, this modular multi-directional deflection comb plate, comb joint stretching device, is comprised concrete box girder A and concrete box girder B, it is characterized in that: be provided with between concrete box girder A and concrete box girder B and let out dirty groove 9, and connected by portable plate 8; Concrete box girder A is provided with fixed head preformed groove 2, in fixed head preformed groove 2, be provided with fixed head to leave a door unlocked in advance muscle 3, fixed head 5 is connected with vibration damper plate 7 with the stainless steel slide plate 6 below fixed head 5 by fixed head fastening bolt 4, and vibration damper plate 7 arranges the below of stainless steel slide plate 6; Fixed head fastening bolt 4 is connected with fixed head preformed groove door muscle 3, guarantees that whole fixed head 5 is firmly overall; Concrete box girder B is provided with portable plate preformed groove 17, is provided with reserved dowel 16 in portable plate preformed groove 17, and portable plate 8 is connected by the upper base plate 134 of portable plate fastening bolt 12 with the multi-directional deflection seat 13 below portable plate 8; Portable plate 8 is connected with anti-rebound mechanism 11 with the lower seat board 131 of the multi-directional deflection seat 13 below portable plate 8 by portable plate fastening bolt 12, can control the active range of stretching device like this; Portable plate fastening bolt 12 and portable plate muscle 16 of leaving a door unlocked in advance is connected, and can guarantee that whole portable plate 8 is firmly overall; Portable plate 8 is overlapped on one end of stainless steel slide plate 6 and vibration damper plate 7.
The material of stainless steel slide plate 6 can be selected: Stainless steel 316 L, and can take in sail plate 8 and the frictional resistance between it like this.Vibration damper plate 7 material can be selected: rubber folder is weaved cotton cloth, like this can effective damping noise control.
The side of letting out dirty groove 9 is connected to the side of fixed head 5; The opposite side letting out dirty groove 9 is connected to the side of portable plate 8, and forms groove; Make it form groove, sewage, dirt trickle naturally along horizontal wall inscription direction, road surface.
Backlash compensation pad 15 is bonded on rear side of portable plate 8, can carry out backlash compensation to the corner that bridge beam body produces.
The spillage when the rear side of fixed head preformed groove 2 and portable plate preformed groove 17 and portable plate 8 makes the first template 10, second template 14 respectively to prevent concreting; Build C50 concrete in fixed head preformed groove 2 and portable plate preformed groove 17, make itself and concrete box girder A and concrete box girder B form an entirety, thus ensure that vehicle smoothly passes on stretching device.
Portable plate 8 is fixedly connected with by the upper base plate 134 of portable plate fastening bolt 12 with the multi-directional deflection seat 13 below it near the side of concrete box girder B; The mid portion of portable plate 8 is fixedly connected with the lower seat board 131 of multi-directional deflection seat 13 with at anti-rebound mechanism 11 by anchor bolt 12.
Multi-directional deflection seat 13 is made up of lower seat board 131, slide plate 132, sphere liner plate 133, upper base plate 134, sphere tetrafluoro plate 135 and plane tetrafluoro plate 136; Be welded with slide plate 132 in the bottom surface of lower seat board 131, the plane tetrafluoro plate 136 being embedded in sphere liner plate 133 bottom can at slide plate 132 surface sliding; Sphere tetrafluoro plate 135 is embedded in below upper base plate 134 in spherical groove, and sphere tetrafluoro plate 135 can slide on sphere liner plate 133 sphere; Lower seat board 131 and upper base plate 134 adopt quincunx falcon groove to be connected, and both contact surfaces are half-circle-arc shape, not only easy for installation but also can ensure both mutual displacement and slips in certain corner.
The upper base plate 134 of multi-directional deflection seat 13 is connected on portable plate 8 by portable plate fastening bolt 12.When portable plate 8 is by under External Force Acting, produce moving corner, undertaken absorbing and compensating by multi-directional deflection seat 13 and backlash compensation pad 15, thus portable plate 8 is not fragile.When portable plate 8 is not by external force, anti-rebound mechanism 11 pairs of portable plates 8 are corrected, are resetted.
The main distinction of this modular multi-directional deflection comb plate, comb joint stretching device of the utility model and common comb-type telescoping device is multi-directional deflection mechanism, the utility model adopts spherical tension compression bearing structure as multi-directional deflection mechanism (multi-directional deflection seat 13), and common comb-type telescoping device adopts rotary shaft as multi-directional deflection mechanism, carry out performance with regard to the modified gear of the stretching device of two kinds of structures below and contrast.
1, the structure of modified gear
The large tooth plate of each unit of common comb-type telescoping device has 3 points to be fixed on modified gear, and modified gear is primarily of compositions such as rotating shaft, pressing plate, holder and anchor bolts; Large tooth plate 2 points of each unit of the utility model are fixed on modified gear, and multi-directional deflection mechanism is primarily of compositions such as lower seat board, slide plate, sphere liner plate, upper base plate, sphere tetrafluoro plate, plane tetrafluoro plates.(as shown in Figure 2) compare two kinds of structures, mainly contain the difference of the following aspects:
(1) bridge lateral level angle compares
The each large tooth plate of common comb-type telescoping device is fixed by 3 holders, and holder self cannot realize the rotation of large tooth plate, and the gap between large tooth plate and little tooth plate can only be leaned on to adapt to direction across bridge level angle, and level angle is difficult to reach 0.01rad.
The each large tooth plate of the utility model is fixed by 2 multi-directional deflection seats, the upper base plate of the tension compression bearing of multi-directional deflection seat can move at lower seat board inner plane, thus the rotation of horizontal plane can be realized, by controlling tension compression bearing horizontal movement, realize horizontally rotating of different corner, level angle can reach 0.02rad, and vertical corner can reach 0.05rad.
(2) friction surface wear Performance comparision
Because large tooth plate frequently rotates under the impact of vehicle, the rotating shaft of common comb-type telescoping device can produce wearing and tearing, can produce gap, impact and strengthen, need to be serviced after rotating shaft wearing and tearing, and to eliminate the gap that wearing and tearing produce, otherwise stretching device should destroy.
Sphere of the present utility model can produce wearing and tearing, and the gap produced after sphere abrasion is carried out auto-compensation can not be produced gap because of wearing and tearing, long service life by the plane of tension compression bearing, the predeformation of sphere tetrafluoro plate, and anti-fatigue performance is good, and maintenance workload is little.
(3) supporting capacity compares
The rotating shaft compression area that each large tooth plate of common comb-type telescoping device is fixed is little, and rotating shaft will be subject to certain shearing force, and vertical bearing capacity is less.Improve bearing capacity, rotating shaft diameter will increase.
The each large tooth plate of the utility model is fixed on two tension compression bearings, has sphere liner plate in tension compression bearing, and load when vehicle passes through is by sphere liner plate, and spherical pressure bearing area is large, and bearing capacity is good.
The load-carrying properties that this modular multi-directional deflection comb plate, comb joint stretching device of the utility model meets are as follows:
(1) when vehicle passes through, impact force is little, and steadily, noise is little in driving.
(2) modular multi-directional deflection comb plate, comb joint stretching device direction across bridge is a module by 1 meter, can change stretching device when uninterrupted traffic and keep in repair.
(3) anti-reflective of modular multi-directional deflection comb plate, comb joint stretching device jumps the rubber tile under system and tooth plate, effectively can absorb the shock loading of vehicle.
(4) modular multi-directional deflection comb plate, comb joint stretching device fitting depth is more shallow, very little to the structure influence of beam body.
The corner feature that modular multi-directional deflection comb plate, comb joint stretching device meets is as follows:
(1) adopt spherical tension compression bearing, bearing capacity is strong, good reliability.
(2) have wearing and tearing automatic makeup reward function, anti-fatigue life is long.
(3) horizontally rotate flexibly, corner can reach 0.02rad.
(4) vertical rotating is flexible, and corner can reach 0.05rad.
Modular multi-directional deflection comb plate, comb joint stretching device can prevent steel plate from rebounding:
Not only when wheel load repeated stock portable plate 8, portable plate produces beats, and produces and jumps car phenomenon but also reduce stretching device application life, therefore, in modular multi-directional deflection comb plate, comb joint stretching device, add anti-rebound mechanism 11.The benefit of setting up anti-rebound mechanism is as follows:
Not only (1) rebound mechanism is made by rubber mass, ensures to be out of shape but also restrained deformation makes portable plate complete within the specific limits in length and breadth to corner and displacement.
(2) when stretching device generation transverse and longitudinal corner and displacement, resetted by this mechanism.
(3) absorb wheel load to the impact of portable plate, play the effect of damping noise control.
(4) supporting role is played to portable plate hanging part.
Modular multi-directional deflection comb plate, comb joint stretching device meets the demand of backlash compensation.Backlash compensation is completed by backlash compensation pad 15, has following function:
(1) have corner automatic compensation function, anti-fatigue life is long.
(2) make to horizontally rotate more flexible, corner can reach 0.02rad.
(3) make vertical rotating more flexible, corner can reach 0.05rad.
The utility model principle is as follows:
(1) superior level, vertical corner performance
When beam-ends occurred level and vertical corner, stretching device produces and rotates centered by the sphere of spherical bearing and sphere-contact, with backlash compensation pad for backlash compensation, meet the level of bridge and the requirement of vertical corner, level angle can reach 0.02rad, vertical corner can reach 0.05rad, and makes device be close to beam-ends.
(2) superior structural performance
Modular multi-directional deflection comb plate, comb joint stretching device structural member is few, assembly function is clear and definite.Greatly facilitate the work such as manufacture, transport, installation, replacing.The width of determination module is carried out according to the regularity of distribution of axletree wheel load, separate between module, do not need to consider load cross direction profiles problem, weaken vibrations and the distortion of whole stretching device.Adopt spherical tension compression bearing, bearing capacity is strong, good reliability.
(3) excellent durability
The main material of modular multi-directional deflection comb plate, comb joint stretching device adopts low-alloy high-tensile structural steel, and this material has increased substantially resistance to compression and the shear resistance of stretching device.
(4) superior waterproof, anti-impurity, noise control and damping performance
The transverse joint plate entirety of stretching device covers on beam-ends gap, and let out the not direct pressurized of dirty groove, tooth plate and stainless steel slide plate are close to continuously, can not be invaded by impurity, and the rubbish between comb is released by force by domatic comb, and is taken away by vehicle, can not enter beam-ends gap.Let out dirty groove not encroach on by rubbish, rainwater infiltrates through bottom of device lets out the thin stream of dirty groove, and water resistance is splendid.When vehicle by time, the vibration damper plate under the anti-reflective chaser structure of stretching device and tooth plate, effectively can absorb the shock loading of vehicle, impact force is little, and steadily, noise is little in driving, so unsuitable aging, damaged.
(5) install, change conveniently, running cost is low
Modular multi-directional deflection comb plate, comb joint stretching device does not have particular/special requirement to installation temperature, and between comb plate, assemblage gap can adjust at any time according to in-site installation temperature.Modular organization assembly is simple and setting height(from bottom) requirement is low, installs simple.The workpiece of modular stretching device has life-cycle property design concept, and each module is relatively independent.When device needs repairing, only require that direction across bridge has 3 meters of width scope of operations, just can carry out independent dismounting maintenance to the module damaged, can carry out the replacing of unit local when uninterrupted traffic, operation expense is low.
(6) beam-ends gap and fitting depth
Modular multi-directional deflection comb plate, comb joint stretching device fitting depth is more shallow, greatly reduces cost and the difficulty of construction of bridge, also can be very little to the structure influence of beam body.
Claims (6)
1. a modular multi-directional deflection comb plate, comb joint stretching device, comprise concrete box girder A(1) and concrete box girder B(18), it is characterized in that: concrete box girder A(1) and concrete box girder B(18) between be provided with and let out dirty groove (9), and to be connected by portable plate (8); Concrete box girder A(1) be provided with fixed head preformed groove (2), in fixed head preformed groove (2), be provided with fixed head to leave a door unlocked in advance muscle (3), fixed head (5) is connected with vibration damper plate (7) with the stainless steel slide plate (6) below fixed head (5) by fixed head fastening bolt (4), and vibration damper plate (7) arranges the below of stainless steel slide plate (6); Fixed head fastening bolt (4) is connected with fixed head preformed groove door muscle (3); Concrete box girder B(18) be provided with portable plate preformed groove (17), in portable plate preformed groove (17), be provided with reserved dowel (16), portable plate (8) is connected by the upper base plate (134) of portable plate fastening bolt (12) with the multi-directional deflection seat (13) below portable plate (8); Portable plate (8) is connected with anti-rebound mechanism (11) by the lower seat board (131) of portable plate fastening bolt (12) with the multi-directional deflection seat (13) below portable plate (8); Portable plate fastening bolt (12) and portable plate muscle (16) of leaving a door unlocked in advance is connected; Portable plate (8) is overlapped on one end of stainless steel slide plate (6) and vibration damper plate (7).
2. modular multi-directional deflection comb plate, comb joint stretching device according to claim 1, is characterized in that: let out dirty groove (9) side and be connected to fixed head (5) side; Opposite side is connected to portable plate (8) side, and forms groove.
3. modular multi-directional deflection comb plate, comb joint stretching device according to claim 1, is characterized in that: backlash compensation pad (15) is bonded in portable plate (8) rear side.
4. modular multi-directional deflection comb plate, comb joint stretching device according to claim 1, is characterized in that: on rear side of fixed head preformed groove (2) and portable plate preformed groove (17) and portable plate (8), make the first template (10), the second template (14) respectively; Build C50 concrete in fixed head preformed groove (2) and portable plate preformed groove (17), make itself and concrete box girder A and concrete box girder B form an entirety.
5. modular multi-directional deflection comb plate, comb joint stretching device according to claim 1, is characterized in that: portable plate (8) is near concrete box girder B(18) side be fixedly connected with the upper base plate (134) of the multi-directional deflection seat (13) below it by portable plate fastening bolt (12); The mid portion of portable plate (8) is fixedly connected with the lower seat board (131) of multi-directional deflection seat (13) with at anti-rebound mechanism (11) by anchor bolt (12).
6. modular multi-directional deflection comb plate, comb joint stretching device according to claim 1, is characterized in that: multi-directional deflection seat (13) is made up of lower seat board (131), slide plate (132), sphere liner plate (133), upper base plate (134), sphere tetrafluoro plate (135) and plane tetrafluoro plate (136); Lower seat board (131) bottom surface welding slide plate (132), is embedded in the plane tetrafluoro plate (136) of sphere liner plate (133) bottom at slide plate (132) surface sliding; Sphere tetrafluoro plate (135) is embedded in below upper base plate (134) in spherical groove, and sphere tetrafluoro plate (135) slides on sphere liner plate (133) sphere; Lower seat board (131) and upper base plate (134) adopt quincunx falcon groove to be connected, and both contact surfaces are half-circle-arc shape.
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| CN201520089047.XU CN204475158U (en) | 2015-02-09 | 2015-02-09 | Modular multi-directional deflection comb plate, comb joint stretching device |
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| CN105862583A (en) * | 2016-04-21 | 2016-08-17 | 衡水鑫盛达新材料科技有限公司 | Non-dismantling replaceable comb plate telescopic device |
| CN105926432A (en) * | 2016-04-27 | 2016-09-07 | 陕西鸿博百川工程材料有限公司 | Standardized unit-type self-adaptive comb plate shaped expansion device and installation method thereof |
| CN106087725A (en) * | 2016-08-02 | 2016-11-09 | 天津桥通科技发展有限公司 | Modular multidirectional displacement comb plate, comb joint rubber slab bridge extension joint |
| CN107558359A (en) * | 2016-06-30 | 2018-01-09 | 上海英谷桥梁科技有限公司 | A kind of interdigitated electrode structure Multidirectional displacement bridge expansion device |
| CN107747278A (en) * | 2017-11-27 | 2018-03-02 | 尚德建设集团有限公司 | Oblique multi-directional deflection retractor device |
| CN107858920A (en) * | 2017-12-12 | 2018-03-30 | 衡水双盛工程橡胶有限公司 | A kind of novel cantilever prepressing type bridge extension joint |
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| CN107922170A (en) * | 2015-08-26 | 2018-04-17 | 奥的斯电梯公司 | Conveying device with mobile fishback in a longitudinal direction |
| CN105862583A (en) * | 2016-04-21 | 2016-08-17 | 衡水鑫盛达新材料科技有限公司 | Non-dismantling replaceable comb plate telescopic device |
| CN105926432A (en) * | 2016-04-27 | 2016-09-07 | 陕西鸿博百川工程材料有限公司 | Standardized unit-type self-adaptive comb plate shaped expansion device and installation method thereof |
| CN105926432B (en) * | 2016-04-27 | 2017-07-25 | 西咸新区鸿博新材料科技有限公司 | A kind of adaptive broach plate shape retractor device of Standardisation Cell formula and its installation method |
| CN107558359A (en) * | 2016-06-30 | 2018-01-09 | 上海英谷桥梁科技有限公司 | A kind of interdigitated electrode structure Multidirectional displacement bridge expansion device |
| CN106087725A (en) * | 2016-08-02 | 2016-11-09 | 天津桥通科技发展有限公司 | Modular multidirectional displacement comb plate, comb joint rubber slab bridge extension joint |
| CN107747278B (en) * | 2017-11-27 | 2024-01-12 | 尚德建设集团有限公司 | Oblique multidirectional displacement telescopic device |
| CN107747278A (en) * | 2017-11-27 | 2018-03-02 | 尚德建设集团有限公司 | Oblique multi-directional deflection retractor device |
| CN107858920A (en) * | 2017-12-12 | 2018-03-30 | 衡水双盛工程橡胶有限公司 | A kind of novel cantilever prepressing type bridge extension joint |
| CN110080101A (en) * | 2019-06-12 | 2019-08-02 | 汪小鹏 | Bridge expanssion joint shock-damping structure |
| CN110080101B (en) * | 2019-06-12 | 2024-05-03 | 汪小鹏 | Bridge expansion joint shock-absorbing structure |
| CN112064498A (en) * | 2020-09-14 | 2020-12-11 | 蒋明敏 | Comb-shaped bridge expansion joint plate structure and cleaning device thereof |
| CN112064498B (en) * | 2020-09-14 | 2021-04-13 | 蒋明敏 | Comb-shaped bridge expansion joint plate structure and cleaning device thereof |
| CN114622475A (en) * | 2022-01-14 | 2022-06-14 | 湖北省交通规划设计院股份有限公司 | Mid-span shaftless force connecting device of ground anchor type cable-stayed bridge and mounting method thereof |
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