CN109736186B - Automatic trigger type umbrella type protection device for preventing collision damage of bridge pier - Google Patents
Automatic trigger type umbrella type protection device for preventing collision damage of bridge pier Download PDFInfo
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- CN109736186B CN109736186B CN201910093821.7A CN201910093821A CN109736186B CN 109736186 B CN109736186 B CN 109736186B CN 201910093821 A CN201910093821 A CN 201910093821A CN 109736186 B CN109736186 B CN 109736186B
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Abstract
The invention discloses an automatic trigger type umbrella type protection device for preventing collision damage of a bridge pier, which mainly comprises a plurality of telescopic rigid support frames to form an umbrella type protection, wherein a cushion layer made of rubber materials is wrapped at the corresponding position on the bridge pier, and the upper ends of the support umbrella frames are fixed on the cushion layer of buffering energy-absorbing rubber on the bridge pier. The top end of each bracket is provided with a circular hole site, and a fixed steel ring passes through the hole site and is fixedly connected at a corresponding position. The bottom end is provided with a roller which can roll on the ground. The middle is a telescopic steel skeleton, each skeleton is connected by a transverse metal arm protecting skeleton, and finally all the vertical skeletons are connected into an umbrella type protection whole. When the rolling stone impact load or other forces impact the protection device, the springs are compressed at the positions to enable the corresponding umbrella frames to contract, then the lock catches of the connected compound switches are opened, then all other springs are unbound, and finally the whole umbrella type protection device is rapidly opened to prevent the bridge pier from being directly impacted.
Description
Technical Field
The invention belongs to the field of disaster prevention and reduction and safety protection engineering of bridges, and particularly relates to an automatic triggering type umbrella type protection device for preventing bridge piers from being impacted and damaged.
Background
A collapse rock disaster is a common geological disaster in high mountain canyon regions worldwide, and is a sudden and severe dynamic geological phenomenon occurring on a steep slope. Unstable rock-soil bodies on the slope suddenly collapse downwards under the action of gravity, earthquake, rainfall or other external forces, roll, jump, impact with each other and disintegrate in the motion process, and finally are accumulated on the slope toe of the slope, and the unstable rock-soil bodies form serious threats to structures such as roads, railways and protective buildings under the slope in the modes of impact, burying and the like. The particle size of the roller stones formed by collapse is from several centimeters to several meters, even dozens of meters, the mass of some roller stones is up to several hundred tons, the impact speed is up to dozens of meters per second, and the roller stones have very strong impact destruction capability. The collapse rock disasters have the characteristics of extremely wide distribution range, sudden occurrence, high frequency and incapability of preventing, and become another important mountain geological disaster following landslide and debris flow disasters.
The bridge is an important component and a weak link of traffic engineering and is also an object needing important protection during traffic engineering operation. The bridge pier is a key part of the bridge and determines the overall stability of the bridge structure. In a high mountain canyon region, a bridge is the most important structure for ensuring the communication of a traffic trunk line, but due to frequent collapse and rock burst disasters, pier columns are often damaged by impact. The rolling stone disaster points are many-sided and wide, the track is complex, and the mountain is high and the slope is steep, so that the problems of inaccurate site selection, difficult construction and the like exist in pier protection by active reinforcement, wall/network path interception technology and the like. Accordingly, the close-fitting wrapping protection is more and more emphasized due to the advantages of clear protection position, controllable engineering quantity and the like. At present, the steel plate is directly used for wrapping the bridge pier to resist the impact of the rolling stone on the engineering most commonly. Practice shows that the structure cannot consume energy and buffer, the wrapped concrete is often seriously cracked, and the protection effect is poor. The other Expandable Polystyrene (EPS) wrapping and buffering technology also limits the application of the other Expandable Polystyrene (EPS) wrapping and buffering technology due to the problems of poor energy consumption, easy aging, difficult construction and the like. In order to solve the problems of the conventional protective device, the novel automatic triggering type umbrella-type protective device for preventing bridge piers from being impacted and damaged is provided.
Disclosure of Invention
The invention aims to overcome the defects of the existing anti-collision facilities and provides a combined type automatic triggering umbrella type protective device for preventing collision damage of a pier, which has the advantages of simple structure, large anti-collision distance and less steel consumption, can buffer and transmit local collision energy to each spring in a partial and graded way, and finally converts concentrated force in one direction into force in multiple directions to act on the periphery of the pier, thereby achieving the effects of buffering firstly and balancing secondly, realizing the protection of the pier and avoiding or reducing the damage of the pier caused by collision load.
In order to achieve the purpose, the invention adopts the technical scheme that the automatic triggering type umbrella-type protection device for preventing the collision damage of the bridge pier comprises a bridge pier buffering energy-absorbing rubber cushion layer (1), a fixed steel ring (2), a rigid supporting umbrella stand (3), a transverse metal guard arm (4), a high-strength spring (5), an arc-shaped composite switch (6), an umbrella stand bottom roller (7), a high-strength fiber nylon protective net (8), a composite switch neck ring (9) and a spring fixing steel bar (10).
The pier buffering energy-absorbing rubber pad (1) is bonded on the pier (11) by a strong universal waterproof adhesive; the fixed steel rings (2) penetrate through round holes at the top ends of the rigid supporting umbrella stands (3) and are clamped at the positions of the openings of the steel rings, and the two semicircular steel rings are riveted and connected by bolts and fixed on the rubber cushion layer; the rigid supporting umbrella stand (3) is welded with the transverse metal protecting arm (4); a spring fixing steel bar (10) is welded in the middle of the rigid supporting umbrella stand (3), and penetrates into the hole position of the high-strength spring (5) to fix the position of the spring; a ring-shaped compound switch collar (9) is welded on the rigid supporting umbrella stand (3) close to the bottom, and each arc-shaped compound switch (6) penetrates through the collar and is connected in a positive and negative lap joint mode to form a ring-shaped binding umbrella stand; the bottom end of the rigid supporting umbrella stand (3) is provided with a bolt hole position which is connected with a roller (7) at the bottom of the umbrella stand through a bolt rod; the high-strength fiber nylon protective net (8) is bound on the umbrella stand by a steel wire.
Each rigid support umbrella stand (3) is arranged along the circumference of a pier (11), each rigid support umbrella stand (3) is connected with each other through a transverse metal guard arm (4) in a welding mode, each transverse metal guard arm (4) can stretch out and draw back to bear impact force, when the transverse metal guard arms bear the impact force, the force is transmitted to the rigid composite support umbrella stands (3), then the rigid support umbrella stands (3) transmit one part of the force to the pier buffering and energy absorbing rubber ring (1) from the top end and further to the pier (11), one part of the force is transmitted to the high-strength spring (5) and further to the pier (11), and the last part of the force is transmitted to the ground through the lower end roller (7), so that the impact force is divided into parts, layered, decomposed, buffered and transmitted, and the instant impact damage to the pier (11.
The rigid supporting umbrella stand (3) is a main stress force transmission system of the device, the rigid supporting umbrella stand (3) can stretch out and draw back, the lower half part of the rigid supporting umbrella stand (3) is an outer sleeve, and the upper half part of the rigid supporting umbrella stand is an inner sleeve; the top of each rigid supporting umbrella stand (3) is fixed on the pier buffering energy-absorbing rubber cushion (1) through a fixing steel ring (2), so that each rigid supporting umbrella stand (3) surrounds the pier (11) in an annular mode to block impact in each direction; the bottom of the rigid supporting umbrella stand (3) is provided with an umbrella stand bottom roller (7), an arc-shaped compound switch collar (9) is welded at the position close to the umbrella stand bottom roller (7), each compound switch penetrates through the compound switch collar (9), and the front and back of the interface of each compound switch is connected into a circular binding spring in an overlapping way; the bottom of the rigid supporting umbrella stand (3) is fixedly connected with an umbrella stand bottom roller (7) through a bearing and a bolt, the umbrella stand bottom roller (7) is in contact with the ground, when the rigid supporting umbrella stand (3) is stretched, the umbrella stand bottom roller (7) rolls outwards, and when the rigid supporting umbrella stand (3) is contracted, the umbrella stand bottom roller (7) rolls inwards.
The rigid supporting umbrella stand (3) is made of manganese steel, and has high strength and rigidity; the transverse metal guard arm (4) is made of aluminum alloy, has certain rigidity and toughness and can bear impact force; the lower half part of the rigid support umbrella stand (3) is welded with a spring fixing steel bar (10), and the high-strength spring (5) is fixedly sleeved on the spring fixing steel bar (10) to prevent the high-strength spring (5) from sliding and is buffered by the high-strength spring (5) and transmits partial force to the pier (11).
The high-strength spring (5) is bound by the arc-shaped compound switch (6), the high-strength spring (5) is pre-compressed in an initial state, and the accumulated elastic force is born by a circular ring formed by connecting the arc-shaped compound switch (6). When a certain part of the pier (11) is impacted by external load, the high-strength spring (5) at the position is quickly compressed, the locking position of the arc-shaped compound switch (6) is dislocated, the ring connected by the compound switch is opened, all the high-strength springs (5) are not restrained any more, the high-strength springs (5) are pre-compressed due to the initial state and have elasticity, and the rolling stones or other objects are rebounded to be opened instantly, so that the pier (11) is protected.
The arc-shaped composite switch (6) is formed by fixedly connecting a strong magnet lap joint and a flexible rubber material, the joint is provided with a neodymium iron boron magnet, and the neodymium iron boron magnet has strong adsorption force, so that only a stressed part is opened when the switch is opened, and other parts are still connected together under the attraction of magnetic force and cannot be scattered completely; the middle of the compound switch is provided with a rubber ring with certain flexibility, the cross section of the compound switch is solid, and small deformation is generated, so that when the switch is opened, the radian is naturally adjusted, and the closed circular state is changed into an opened large circular state. The joint and the middle rubber material are connected by mechanical engagement or bolts as long as the strength is enough.
The high-strength spring (5) is made of materials with different rigidity or is compressed to different degrees to control the critical load size capable of opening the arc-shaped composite switch, and therefore the bridge piers with different protection grade requirements can be protected in a distinguishing mode.
The high-strength fiber nylon protective net (8) is woven into a net by ultra-high molecular polyethylene ropes, and the size of the meshes is determined according to the actual protection requirement. The diameter of the mesh of the high-strength fiber nylon protective net (8) is less than 6cm, vehicle impact is prevented, materials are saved by adopting large meshes, but the diameter is not more than 1/10 of the length of the rigid framework, so that the strength is ensured to be sufficient.
The length of the rigid supporting umbrella frame (3) in a contraction state is not less than 150cm, and the included angle between the top end and the pier (11) is 300-400In the opening state, the length of the stretching state is not less than 200cm, and the included angle between the top end and the pier (11) is 450-550Therefore, the impact load can be guaranteed to be decomposed and transmitted to the ground to the maximum extent.
Compared with the prior art, the invention has the following advantages
1. The anti-collision device is contracted around the bridge pier at ordinary times, occupies small area, does not hinder passing, and is automatically triggered when receiving impact load.
2. This buffer stop adjustable load sensitivity comes to protect the pier that different areas, different atress condition, different protection grade required through the spring of selecting different intensity, according to local conditions.
3. Compare with existing protector like devices such as anti-collision ring, parcel rubber circle, this buffer stop is when receiving impact load, and when arc blend switch opened, each spring extends simultaneously, and a bit is strikeed, and the multiple spot is undertaken, and the pier is changed into multidirectional atress by one-way atress, the horizontal shearing force of the pier that significantly reduces, the effectual shearing damage of avoiding or having reduced.
4. The rigid composite supporting umbrella stand divides the impact force into four parts for transmission: firstly, the energy is transmitted to the buffering energy-absorbing rubber ring from the top end of the umbrella stand; secondly, the spring is transmitted to the pier; thirdly, the transverse metal protecting arm is transmitted to other umbrella stands; and fourthly, the bottom roller is transmitted to the ground. The force is transmitted in a subsection and grading mode, meanwhile, the ground provides supporting force, and the protection mode that the traditional protection device is only stressed by the pier is changed.
5. This buffer stop is compound anticollision facility, and is little with the steel volume, and the anticollision distance is big, simple structure, and construction convenience, the durability is good, is convenient for inspection and maintenance, is fit for various complicated geographical environment.
Drawings
FIG. 1 is a front external view of the present invention when closed
FIG. 2 is a front view of the present invention automatically opening when loaded
FIG. 3 is a partial cross-sectional view of the rigid support umbrella frame and the transverse metal guard arm of the present invention in a closed state
FIG. 4 is a partial cross-sectional view of the rigid support umbrella frame and the transverse metal arm of the present invention in an open state
FIG. 5 is a top view of the arc-shaped combination switch of the present invention in a closed state
FIG. 6 is a top view of the arc-shaped combination switch of the present invention in an open state
FIG. 7 is the structure of the rigid composite umbrella frame
FIG. 8 is a connection mode diagram of the arc-shaped composite switch and the rigid support umbrella stand of the invention
FIG. 9 is a perspective view of an arc-shaped combination switch of the present invention
FIG. 10 is an external view of the steel ring of the present invention
In the figure: 1. pier buffering energy-absorbing rubber cushion, 2, fixed steel ring, 3, rigid support umbrella stand, 4, horizontal metal armguard, 5, high-strength spring, 6, arc blend switch, 7, umbrella stand bottom gyro wheel, 8, high-strength fiber nylon protection network, 9, blend switch neck ring, 10, the fixed billet of spring, 11, pier.
Detailed Description
Take bridge pier protection in certain easily-occurred earthquake and landslide mountain areas as an example:
the diameter of the pier is 1m, the height of the pier is 20m, the pier is built in a canyon between two mountains, and the pier is easy to suffer from rock rolling impact.
1) The buffer energy-absorbing rubber protection pad is wrapped at the position 2m away from the pier and can be bonded on the pier by adopting American flex glue powerful universal waterproof glue, and the thickness of the rubber protection pad is 6 cm.
2) And cutting a semicircular steel ring with the diameter of 104cm into hole positions with the diameter of 6cm by using a cutting machine, uniformly cutting four holes at intervals, and manufacturing two semicircular fixed steel rings by the same method.
3) Rigid support umbrella stand made of two manganese steel pipes with different apertures
Material size: the size of the A-type steel pipe is 8cm in outer diameter, 6cm in inner diameter and 1cm in pipe wall thickness; the size of the B-type steel pipe is 12cm of outer diameter, 10cm of inner diameter and 1cm of pipe wall thickness.
The preparation method comprises the following steps: welding a B-type steel pipe with the length of 100cm with an A-type steel pipe with the length of 50cm, and marking as a component 1; secondly, taking a B-type steel pipe with the length of 10cm, marking two ends as B1 and B2, welding a circular ring with the outer diameter of 10cm, the inner diameter of 8cm and the thickness of 2cm at a pipe orifice at the B1 end, and marking as a component 2; thirdly, the component 1 penetrates through the end b1 and the end b2 of the component 2, and then a circular ring with the outer diameter of 10cm, the inner diameter of 8cm and the thickness of 2cm is welded at the bottom end of the component 1; and fourthly, taking the B-type steel pipe with the length of 150cm and recording the B-type steel pipe as a component 3. Part 3 was welded to the b2 end of part 2. The whole umbrella stand main body is completed. The bottom of the umbrella stand main body is connected with the idler wheel through a bolt, the top of the umbrella stand main body is welded with a steel ring, the steel ring is embedded in a hole position of a fixed steel ring, and then the two semicircular steel rings are buckled at the upper connector of the pier and are welded or connected through a bolt.
4) Method for manufacturing transverse metal guard arm by taking two types of aluminum alloy arc-shaped pipes with different apertures
Material size: the outer diameter of the A-type arc tube is 6cm, the inner diameter is 4cm, the wall thickness of the tube is 1cm, and the diameter of the arc is 140 cm; the outer diameter of the B-type arc tube is 8cm, the inner diameter of the B-type arc tube is 6cm, the wall thickness is 1cm, and the diameter of the arc is 140 cm.
The preparation method comprises the following steps: firstly, welding a B-type arc-shaped pipe with an arc length of 10cm with an A-type arc-shaped pipe with an arc length of 20cm, and recording as a component 4; secondly, taking a B-type arc-shaped pipe with the length of 5cm, recording two ends as B3 and B4, welding a circular ring with the outer diameter of 6cm, the inner diameter of 4cm and the thickness of 1cm at a pipe orifice at the B3 end, and recording the circular ring as a component 5; thirdly, the component 4 penetrates through the end b3 and the end b4 of the component 5, and then the tail end of the component 4 is welded with a circular ring with the outer diameter of 6cm, the inner diameter of 4cm and the thickness of 1 cm; and fourthly, taking the A-type arc-shaped pipe with the arc length of 20cm as the component 6, and welding the component 6 and the b4 end of the component 5. The whole body part of the guard arm is completed. And welding a plurality of protective arms into a circular ring and welding the circular ring with the rigid supporting umbrella frame.
5) The spring is selected to have the aperture of 0.15m and the length of 1m, the spring is connected below each rigid composite support umbrella stand, the spring is compressed to 0.65m by a machine at the beginning, then the spring is bundled by steel wires, and the steel wires are cut one by one after all the rigid composite support umbrella stands are installed, and the restraint is released.
(6) The center part of the compound switch is a solid rubber ring with the diameter of 4cm and the length of 50cm, the joint part is a lock catch made of neodymium iron boron high-strength magnet and the length of 6cm, and the joint is in mechanical meshing connection with the center part. The front and back lap joints of each interface of the arc-shaped compound switch penetrate through the compound switch neck ring on the umbrella stand and are connected in series to form a closed circular ring, then each umbrella stand is provided with a spring, the umbrella stand is welded with a steel bar with the length of 5cm, the spring can be sleeved on the steel bar to prevent sliding, all the springs can be placed to cut off steel wires of the bound spring, and the force of the spring is born by the compound switch.
The spring is pre-compressed in the initial state, each vertical umbrella stand is bound by a circular ring formed by buckling a plurality of arc-shaped combination switches together, and the force of the spring is borne by the combination switches. When a certain position is impacted by external load, the spring at the position is rapidly compressed, the switch locking position is staggered, the ring connected by the compound switch is opened, all the springs are not restrained any more, the springs have elasticity due to the fact that the springs are applied to be compressed in advance in the initial state, and the rolling stones or other objects are rebounded to be opened instantly, so that the bridge pier is protected.
Claims (8)
1. Prevent the umbrella formula protector of auto-trigger type of pier striking damage, its characterized in that: the bridge pier supporting umbrella comprises a bridge pier buffering energy-absorbing rubber cushion layer (1), a fixing steel ring (2), a rigid supporting umbrella stand (3), a transverse metal guard arm (4), a high-strength spring (5), an arc-shaped composite switch (6), an umbrella stand bottom roller (7), a high-strength fiber nylon protective net (8), a composite switch collar (9) and a spring fixing steel bar (10);
the pier buffering energy-absorbing rubber cushion layer (1) is bonded on the pier (11) by a strong universal waterproof adhesive; the fixed steel rings (2) penetrate through round holes at the top ends of the rigid supporting umbrella stands (3) and are clamped at the positions of the openings of the steel rings, and the two semicircular steel rings are riveted and connected by bolts and fixed on the rubber cushion layer; the rigid supporting umbrella stand (3) is welded with the transverse metal protecting arm (4); a spring fixing steel bar (10) is welded in the middle of the rigid supporting umbrella stand (3), and penetrates into the hole position of the high-strength spring (5) to fix the position of the spring; the rigid supporting umbrella stand (3) is welded with an arc-shaped compound switch collar (9) close to the bottom, and each arc-shaped compound switch (6) penetrates through the collar and is in positive and negative lap joint to form a circular ring binding umbrella stand; the bottom end of the rigid supporting umbrella stand (3) is provided with a bolt hole position which is connected with a roller (7) at the bottom of the umbrella stand through a bolt rod; the high-strength fiber nylon protective net (8) is bound on the umbrella stand by a steel wire;
each rigid support umbrella stand (3) is arranged along the circumference of a pier (11), each rigid support umbrella stand (3) is connected with each other through a transverse metal guard arm (4) in a welding mode, each transverse metal guard arm (4) can stretch out and draw back to bear impact force, when the transverse metal guard arms bear the impact force, the force is transmitted to each rigid support umbrella stand (3), then one part of the force is transmitted to a pier buffering and energy absorbing rubber cushion layer (1) from the top end of each rigid support umbrella stand (3) and then transmitted to the pier (11), one part of the force is transmitted to a high-strength spring (5) and then transmitted to the pier (11), and the last part of the force is transmitted to the ground through a lower end roller (7), so that the impact force is divided into parts, layered, decomposed, buffered and transmitted, and the instant impact damage.
2. The automatic trigger type umbrella-type protection device for preventing collision damage of piers according to claim 1, characterized in that: the rigid supporting umbrella stand (3) is a main stress force transmission system of the device, the rigid supporting umbrella stand (3) can stretch out and draw back, the lower half part of the rigid supporting umbrella stand (3) is an outer sleeve, and the upper half part of the rigid supporting umbrella stand is an inner sleeve; the top of each rigid supporting umbrella stand (3) is fixed on the pier buffering energy-absorbing rubber cushion (1) through a fixing steel ring (2), so that each rigid supporting umbrella stand (3) surrounds the pier (11) in an annular mode to block impact in each direction; the bottom of the rigid supporting umbrella stand (3) is provided with an umbrella stand bottom roller (7), an arc-shaped compound switch collar (9) is welded at the position close to the umbrella stand bottom roller (7), each compound switch penetrates through the compound switch collar (9), and the front and back of the interface of each compound switch is connected into a circular binding spring in an overlapping way; the bottom of the rigid supporting umbrella stand (3) is fixedly connected with an umbrella stand bottom roller (7) through a bearing and a bolt, the umbrella stand bottom roller (7) is in contact with the ground, when the rigid supporting umbrella stand (3) is stretched, the umbrella stand bottom roller (7) rolls outwards, and when the rigid supporting umbrella stand (3) is contracted, the umbrella stand bottom roller (7) rolls inwards.
3. The automatic trigger type umbrella-type protection device for preventing collision damage of piers according to claim 1, characterized in that: the rigid supporting umbrella stand (3) is made of manganese steel, and has high strength and rigidity; the transverse metal guard arm (4) is made of aluminum alloy, has certain rigidity and toughness and can bear impact force; the lower half part of the rigid support umbrella stand (3) is welded with a spring fixing steel bar (10), and the high-strength spring (5) is fixedly sleeved on the spring fixing steel bar (10) to prevent the high-strength spring (5) from sliding and is buffered by the high-strength spring (5) and transmits partial force to the pier (11).
4. The automatic trigger type umbrella-type protection device for preventing collision damage of piers according to claim 1, characterized in that: the high-strength spring (5) is bound by the arc-shaped compound switch (6), the high-strength spring (5) is pre-compressed in an initial state, and the accumulated elastic force is borne by a circular ring formed by connecting the arc-shaped compound switch (6); when a certain part of the pier (11) is impacted by external load, the high-strength spring (5) at the position is quickly compressed, the locking position of the arc-shaped compound switch (6) is dislocated, the ring connected by the compound switch is opened, all the high-strength springs (5) are not restrained any more, the high-strength springs (5) are pre-compressed due to the initial state and have elasticity, and the rolling stones or other objects are rebounded to be opened instantly, so that the pier (11) is protected.
5. The automatic trigger type umbrella-type protection device for preventing collision damage of piers according to claim 1, characterized in that: the arc-shaped composite switch (6) is formed by fixedly connecting a strong magnet lap joint and a flexible rubber material, the joint is provided with a neodymium iron boron magnet, and the neodymium iron boron magnet has strong adsorption force, so that only a stressed part is opened when the switch is opened, and other parts are still connected together under the attraction of magnetic force and cannot be scattered completely; the middle of the compound switch is a rubber ring with certain flexibility, the section of the compound switch is solid, and small deformation is generated, so that when the switch is opened, the radian is naturally adjusted, and the closed circular state is changed into an opened large circular state; the joint is connected with the middle rubber material through mechanical engagement or bolts.
6. The automatic trigger type umbrella-type protection device for preventing collision damage of piers according to claim 1, characterized in that: the high-strength spring (5) is made of materials with different rigidity or is compressed to different degrees to control the critical load size capable of opening the arc-shaped composite switch, and therefore the bridge piers with different protection grade requirements can be protected in a distinguishing mode.
7. The automatic trigger type umbrella-type protection device for preventing collision damage of piers according to claim 1, characterized in that: the high-strength fiber nylon protective net (8) is woven into a net by ultra-high molecular polyethylene ropes, and the size of the meshes is determined according to the actual protection requirement; the diameter of the mesh of the high-strength fiber nylon protective net (8) is less than 6cm, the vehicle impact is protected, the material is saved by adopting large mesh, but the diameter is not more than 1/10 of the length of the rigid framework.
8. The automatic trigger type umbrella-type protection device for preventing collision damage of piers according to claim 1, characterized in that: the length of the rigid supporting umbrella frame (3) in a contraction state is not less than 150cm, the included angle between the top end and the pier (11) is within 30-40 degrees, the length of the rigid supporting umbrella frame in an extension state after opening is not less than 200cm, and the included angle between the top end and the pier (11) is within 45-55 degrees, so that the impact load can be guaranteed to be decomposed and transmitted to the ground to the maximum extent.
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| CN201910093821.7A CN109736186B (en) | 2019-01-30 | 2019-01-30 | Automatic trigger type umbrella type protection device for preventing collision damage of bridge pier |
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| CN201910093821.7A CN109736186B (en) | 2019-01-30 | 2019-01-30 | Automatic trigger type umbrella type protection device for preventing collision damage of bridge pier |
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| CN109736186B true CN109736186B (en) | 2020-10-27 |
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| CN110241715B (en) * | 2019-07-15 | 2020-09-18 | 浙江海洋大学 | Bridge pier protector |
| CN110552299B (en) * | 2019-08-06 | 2021-10-26 | 嘉兴金旅燕科技有限公司 | Town road safety barrier |
| CN111622082B (en) * | 2020-05-12 | 2022-04-01 | 国网浙江省电力有限公司湖州供电公司 | Novel portable concatenation bridge |
| CN112695618A (en) * | 2020-12-21 | 2021-04-23 | 四川省交通勘察设计研究院有限公司 | Pier protector |
| CN114724819B (en) * | 2022-06-07 | 2022-08-23 | 深圳市万志宇科技有限公司 | Anti-collision high-frequency transformer |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100631831B1 (en) * | 2006-07-12 | 2006-10-04 | (주)정엔지니어링 | Injury protect institution of bridge pier base for pro-environment |
| KR101366954B1 (en) * | 2012-11-06 | 2014-02-25 | 지종연 | A raise height adjusting device |
| CN204385666U (en) * | 2014-12-25 | 2015-06-10 | 东北林业大学 | A kind of anticollision device of pier |
| CN206204767U (en) * | 2016-11-15 | 2017-05-31 | 段续 | A kind of cross-line bridge pier protector |
| KR101973702B1 (en) * | 2016-12-30 | 2019-04-29 | 이성 | Assembling type pier |
| CN207597239U (en) * | 2017-10-23 | 2018-07-10 | 沈阳建筑大学 | Bridge pier with rotary anti-collision protective device |
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Effective date of registration: 20240730 Address after: 230000 B-1015, wo Yuan Garden, 81 Ganquan Road, Shushan District, Hefei, Anhui. Patentee after: HEFEI MINGLONG ELECTRONIC TECHNOLOGY Co.,Ltd. Country or region after: China Address before: 100124 No. 100 Chaoyang District Ping Tian Park, Beijing Patentee before: Beijing University of Technology Country or region before: China |