CN110984027A - Lifting type flexible height limiting protection frame based on damper - Google Patents
Lifting type flexible height limiting protection frame based on damper Download PDFInfo
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- CN110984027A CN110984027A CN201911293831.1A CN201911293831A CN110984027A CN 110984027 A CN110984027 A CN 110984027A CN 201911293831 A CN201911293831 A CN 201911293831A CN 110984027 A CN110984027 A CN 110984027A
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- damper
- steel wire
- height
- wire rope
- piston
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F13/00—Arrangements for obstructing or restricting traffic, e.g. gates, barricades ; Preventing passage of vehicles of selected category or dimensions
- E01F13/04—Arrangements for obstructing or restricting traffic, e.g. gates, barricades ; Preventing passage of vehicles of selected category or dimensions movable to allow or prevent passage
- E01F13/048—Arrangements for obstructing or restricting traffic, e.g. gates, barricades ; Preventing passage of vehicles of selected category or dimensions movable to allow or prevent passage with obstructing members moving in a translatory motion, e.g. vertical lift barriers, sliding gates
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F9/00—Arrangement of road signs or traffic signals; Arrangements for enforcing caution
- E01F9/60—Upright bodies, e.g. marker posts or bollards; Supports for road signs
- E01F9/658—Upright bodies, e.g. marker posts or bollards; Supports for road signs characterised by means for fixing
- E01F9/669—Upright bodies, e.g. marker posts or bollards; Supports for road signs characterised by means for fixing for fastening to safety barriers or the like
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The invention provides a lifting type flexible height limiting protection frame based on a damper, which flexibly intercepts an ultrahigh vehicle through a rubber-coated steel wire rope, wherein the steel wire rope is connected with the damper arranged below a portal steel frame through a movable beam, the damper generates resistance when the vehicle impacts the steel wire rope to intercept the ultrahigh vehicle, and a fluid medium in the damper can absorb part of vehicle kinetic energy to convert into self internal energy in the intercepting process, so that the damage to the vehicle and passengers is reduced. The movable beam is connected with a winch arranged at the bottom of the portal steel frame through a transmission steel wire rope, and the height limiting function is achieved. The invention can be suitable for the height limit requirements of roads with different grades.
Description
Technical Field
The invention relates to a road height limiting protection frame, in particular to a lifting type flexible height limiting protection frame based on a damper.
Background
According to the regulations on safety protection of railway transportation and the highway laws of the people's republic of China, for roads passing through railways, highway bridges and culverts, vehicle passing height limit signs and height limit protective frames are set according to the relevant national standards. Although various specifications all put forward the requirements of measures such as setting a height limiting protective frame, a reasonable and effective structural form is not provided. The existing height-limiting protective frame is mostly of a fixed rigid structure and has the following defects: firstly, once the ultrahigh vehicle is not stopped in time, the upper structure of the vehicle is cut off by the height limiting frame, so that the problem of passenger accidents is easily caused; secondly, the upright posts and the foundation are easily damaged, so that the height limiting protection frame is integrally overturned to cause secondary accidents; thirdly, the height limiting structure is deformed and damaged after being collided and cannot be used continuously.
Therefore, the designed height limiting frame can effectively intercept ultrahigh vehicles, ensure the safety of bridges, reduce the damage degree of the vehicles and ensure the safety of passengers, and is significant.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: in response to the above-identified deficiencies in the art or needs for improvement, a flexible height limiting frame with a damper is provided. The protective frame can not only intercept ultrahigh vehicles in a limited way; moreover, because the steel wire rope and the rubber sleeve are softer, the damage degree of the ultrahigh vehicle can be reduced to the maximum extent, and the safety of passengers is ensured; in addition, the height limiting frame can automatically restore to the original state after the interception task is finished, and the operation is continued; finally, the height limiting frame can be automatically lifted according to the requirement, and the travel limiting height of the height limiting frame is changed.
The invention adopts the following technical scheme for solving the technical problems:
the invention provides a lifting type flexible height limiting protection frame based on a damper. The interception system mainly comprises interception wire rope, rubber sleeve, pulley and attenuator, wherein: the damper is fixed at the bottom of the upright columns on two sides of the portal steel frame through bolts, the intercepting steel wire ropes transversely penetrate through the portal steel frame and are connected with the tail ends of the piston rods, the rubber sleeves wrap the intercepting steel wire ropes, when the ultrahigh vehicle passes through the portal steel frame, the ultrahigh vehicle can be blocked by the intercepting steel wire ropes wrapped with rubber, the intercepting steel wire ropes drive the damper to move, and the generated damping force enables the ultrahigh vehicle to be forced to decelerate.
The damper mainly comprises a piston rod, a valve, a piston and a cylinder body part, wherein: the bottom of the cylinder body is fixed on the ground through a base, and the top of the cylinder body is completely closed and is only provided with a round hole for the piston rod to pass in and out conveniently; and a circular lifting lug which is convenient for the connection of the steel wire rope and the damper is arranged at the top of the piston rod.
A circular opening is formed in the middle of the piston, and a groove is formed beside the opening and used for installing a valve; the side part of the valve is provided with a pin hole which is connected with the piston through a bolt.
When the piston moves upwards, the valve is closed, and at the moment, the fluid can only flow through a circle of piston small holes on the piston, so that the resistance is increased; the valve opens when the piston moves downward, at which time the fluid in the cylinder flows through the circular opening and the resistance decreases.
The lifting type flexible height-limiting protection frame is provided with a lifting system mainly comprising a winch, a transmission steel wire rope, a vertical pulley and a movable beam, and the height of the height-limiting frame is controlled when the movable beam moves upwards or downwards.
The movable beam consists of an upper I-shaped steel and a lower I-shaped steel, pulleys are arranged in the middle and on the outer side of the movable beam, and a transmission steel wire rope penetrates through the movable beam to change the direction along with two rollers; the movable beam is provided with eight gears which are matched with the gears on the channel steel of the door type steel frame.
The intercepting steel wire ropes penetrate through the movable cross beams on two sides of the portal steel frame, and the direction of the intercepting steel wire ropes is changed by 90 degrees in the horizontal direction and then changed by 90 degrees in the vertical direction through transmission of the two pulleys in the movable cross beams, so that effective transmission of the pulling force of the intercepting steel wire ropes is guaranteed, and the installation of the damper is facilitated.
The gate-type steelframe mainly form by square pipe welding, local area adopts bolted connection, the installation of the structure of being convenient for, need be to the pre-buried reinforced concrete in road both sides before the installation, fixed gate-type steelframe through bolted connection, the gate-type steelframe spanes the road after the installation is successful, mainly plays support and warning effect.
The upright columns on two sides of the portal steel frame are provided with an intercepting system and a lifting system.
In the lifting type flexible height-limiting protection frame, when an ultrahigh vehicle passes through the portal steel frame, the ultrahigh vehicle can be blocked by the intercepting steel wire rope, the intercepting steel wire rope drives the damper to move, and the generated damping force enables the ultrahigh vehicle to be forcedly decelerated.
Compared with the prior art, the invention has the following main beneficial effects:
1. the steel wire rope connected with the damper is used for flexibly intercepting the ultrahigh vehicle, and rubber is coated outside the steel wire rope, so that the friction force between the steel wire rope and the ultrahigh vehicle in the intercepting process can be increased, the steel wire rope is prevented from slipping off in the intercepting process, and the rubber coated outside can effectively reduce the damage to the vehicle and passengers in the intercepting process;
2. compared with the traditional pure steel height limiting frame, the invention reduces the intercepting rigidity and prolongs the collision time course in the intercepting process by using the damper, thereby reducing the damage to the over-limit vehicle and drivers and passengers in the intercepting process; the fluid medium (silicon oil) in the damper can convert partial kinetic energy of the overrun vehicle into the internal energy of the fluid medium, and can also play a role in reducing the damage of the vehicle; the valve in the damper can accelerate the resetting of the steel wire rope after collision, so that the height limiting system can operate circularly;
3. the height limit height can be adjusted by a lifting system consisting of the winch, the steel wire rope and the movable cross beam, and the height limit device is suitable for height limit requirements of different highway grades.
Drawings
Fig. 1 is a perspective view of the present invention.
Fig. 2 is a schematic view of the structure of the interception system.
Fig. 3 is a perspective view of the damper.
Figure 4 is a cross-sectional view of the damper.
In fig. 5, the upper drawing is a top view of the piston, and the lower drawing is a schematic view of the damper rod and the lug.
In fig. 6, the upper view is a sectional view of the shutter, and the lower view is a plan view of the shutter.
Fig. 7 is a schematic view of a lift system.
Fig. 8 is a schematic view of the moving beam.
In the figure: 1. the hydraulic lifting device comprises a portal steel frame, 2. an intercepting steel wire rope, 3. a rubber sleeve, 4. a pulley, 5. a damper, 6. a winch, 7. a movable beam, 8. a channel steel, 9. a lifting lug, 10. a gear, 11. a supporting rod, 12. a circular lifting lug, 13. a piston rod, 14. silicone oil, 15. a valve, 16. a piston, 17. a base, 18. a cylinder body, 19. a circular hole, 20. a valve pin hole, 21. a piston opening, 22. a piston small hole, 23. the winch, 24. a rotating wheel, 25. a transmission steel wire rope and 26. a fixed beam.
Detailed Description
The invention provides a lifting type flexible height-limiting protection frame based on a damper, which is used for flexibly intercepting an ultrahigh vehicle through a rubber-coated steel wire rope, wherein the steel wire rope is connected with the damper arranged below a portal steel frame through a movable cross beam, the damper generates resistance when the vehicle impacts the steel wire rope to intercept the ultrahigh vehicle, and a fluid medium in the damper can absorb part of vehicle kinetic energy to convert the kinetic energy into internal energy in the intercepting process, so that the damage to the vehicle and passengers is reduced. The movable beam is connected with a winch arranged at the bottom of the portal steel frame through a transmission steel wire rope, plays a role in adjusting height limit, and can adapt to the height limit requirements of roads of different grades.
The present invention will be further described with reference to the following examples and drawings, but the present invention is not limited thereto.
The invention provides a lifting type flexible height limiting protection frame based on a damper, which has a structure shown in figure 1 and mainly comprises a portal steel frame 1, an intercepting steel wire rope 2, a rubber sleeve 3, a pulley 4, a damper 5, a winch 6, a movable beam 7, channel steel 8 and a transmission steel wire rope 25, wherein: the portal frame 1 is mainly formed by welding square pipes, the local area is connected through bolts, the structure is convenient to install, and the portal frame 1 is fixed through bolts before installation by embedding reinforced concrete on two sides of a road. The rear door type steel frame 1 spans across the road after successful installation, and mainly plays a role in supporting and warning. The two side upright posts are used for arranging an intercepting system and a lifting system.
The structure of the interception system is shown in fig. 2 and mainly comprises an interception steel wire rope 2, a rubber sleeve 3, a pulley 4 and a damper 5.
The damper 5 is a core component, as shown in fig. 3 and 4, and mainly comprises a piston rod 13, a valve 15, a piston 16, and a cylinder 18, wherein: the bottom of the cylinder body 18 is fixedly connected with a base 17, a round hole 19 is formed in the base 17 and is conveniently connected with a ground bolt, and the top of the piston rod 13 is a round lifting lug 12 which is convenient for connection of a steel wire rope and a damper. The top of the cylinder body 18 is completely closed and only provided with a round hole to facilitate the inlet and outlet of the piston rod 13, the precision requirement of the round hole and the piston rod 13 is very high, and fluid cannot leak out under high pressure. The cylinder 18 contains a fluid medium in its interior, which is silicone oil 14. The piston 16 has a circular opening 21 in the middle and a recess beside the opening for mounting the shutter 15. The side of the valve 15 is provided with a pin hole 20 which is connected with the piston through a bolt. When the piston 16 moves downwards, the valve 15 turns upwards to be in an open state, and fluid can flow through the circular opening; the valve cover is closed when the piston 16 moves upward, and fluid can only flow through a ring of small piston holes 22 in the piston 16. In contrast, the latter is subjected to much greater resistance than the former.
The two ends of the intercepting steel wire rope 2 are respectively connected with the circular lifting lugs 12 at the tail ends of the piston rods 13 of the two dampers 5, and the intercepting steel wire rope 2 spans across the road section and wraps one section of rubber sleeve 3, and the purpose is as follows: firstly, when the vehicle passes by, the contact area can be increased, the impact force of the intercepting steel wire rope 2 on the local part of the vehicle is reduced, and the intercepting steel wire rope 2 is also protected; in addition, the rubber has a larger friction factor, and the friction force is increased, so that the vehicle can be better intercepted; finally, the outer layer of the rubber sleeve 3 can be sprayed with yellow and black alternate stripes, so that a good warning effect can be achieved.
The interception steel wire rope 2 can penetrate through the movable cross beam 7 on two sides of the portal steel frame 1, and two transverse and vertical pulleys 4 are arranged in the movable cross beam 7, so that the direction of the interception steel wire rope 2 is changed by 90 degrees in the horizontal direction and then changed by 90 degrees in the vertical direction. This ensures effective transmission of the tensile force and facilitates the installation of the damper 5.
When an ultrahigh vehicle passes by, the ultrahigh part is in contact with the rubber sleeve 3 to drag the intercepting steel wire rope 2 to move forward, the intercepting steel wire rope 2 pulls the piston rods 13 on two sides to move upwards, the valve 15 is in a closed state, the piston is forced to move upwards from the bottom of the cylinder body 18, a fluid medium (silicon oil 14) on the piston 16 is pressed and then can only pass through a circle of small holes on the piston 16, the flow rate of the fluid is far not capable of ensuring the pressure balance on two sides of the piston 16 due to the high rising speed, and due to the existence of pressure difference, very large resistance is generated and converted into pulling force which is enough to force the ultrahigh vehicle to decelerate.
The structure of the lifting system is shown in fig. 7, and mainly comprises a winch 6, a transmission steel wire rope 25, a vertical pulley 4, a movable beam 7 and the like, wherein: the hoist 6 is installed in the bottom of portal steel frame 1, and one side of hoist 6 even has two runners 24, and the diameter is big one little, twines transmission wire rope 25 that rises and drop-down transmission wire rope 25 respectively. The pull-down transmission steel wire rope 25 is directly connected with the lifting lug 9 at the lower end of the movable cross beam 7, and the lifting transmission steel wire rope 25 is connected with the lifting lug 9 at the upper end of the movable cross beam 7 after bypassing the vertical pulley 4. The fixed beam 26 is positioned at the upper part of the portal steel frame 1.
The movable beam 7 is structured as shown in fig. 8, two superposed i-steel structures are formed outside the movable beam 7, a shaft pin is arranged at the center, and the relative positions are fixed by four support rods 11. The upper and lower ends of the movable cross beam 7 are provided with lifting lugs 9, transmission steel wire ropes 25 are convenient to connect, the movable cross beam 7 is provided with circular gears 10 on four corners, and the gears 10 can be matched with the gears 10 on channel steel of the portal steel frame 1 to ensure that the movable cross beam 7 can stably move up and down.
The invention provides a lifting type flexible height limiting protection frame based on a damper, which comprises the following working processes:
when the height of the height limiting frame needs to be changed, the winch 23 is started, when the height limiting frame rotates clockwise, the large-diameter rotating wheel takes up the rope, the small-diameter rotating wheel takes up the rope, the large-diameter rotating wheel and the small-diameter rotating wheel cooperate to pull up the movable cross beam 7, and therefore the movable cross beam is driven to intercept the ascending of the steel wire rope 2, and the height of the height limiting frame is increased; when the movable beam 7 rotates anticlockwise, the large-diameter rotating wheel loosens the rope, the small-diameter rotating wheel retracts the rope, the movable beam 7 is pulled down by the cooperation of the large-diameter rotating wheel and the small-diameter rotating wheel, the intercepting steel wire rope 7 descends together, and the travel limiting height is reduced.
When the ultrahigh vehicle passes by, the ultrahigh vehicle is blocked by a circle of rubber-coated steel wire rope, the piston rod is pulled to move upwards, the valve on the piston is closed at the moment, the silicone oil in the cylinder body can only flow through the small hole of the piston, the resistance is very large at the moment, and the silicone oil is converted into the tensile force of the rope to force the ultrahigh vehicle to decelerate; when the vehicle passes through smoothly, the piston begins to sink under the action of gravity, the valve is opened, the resistance is very small at the moment, the piston can sink into the bottom of the cylinder body smoothly, and the steel wire rope is straightened again. The bottom of the two sides of the portal steel frame is provided with a winch, and the winch rotates and upwards or downwards pulls the movable cross beam through a pulley mechanism, so that the height of the height limit can be changed.
The invention provides a lifting type flexible height limiting protection frame based on a damper, which has the following characteristics:
1. compared with the traditional steel height limiting frame, the steel wire rope coated with rubber is adopted to flexibly intercept the ultrahigh vehicle, so that the damage to the vehicle and passengers in the intercepting process can be reduced. The rubber coated outside the steel wire rope can increase the friction force in the interception process, and the steel wire rope is prevented from slipping during interception;
2. the invention uses the resistance of the damper to intercept the ultrahigh vehicle, has lower rigidity than the traditional steel height limiting frame, and can reduce the interception loss. And the fluid medium (silicon oil) in the damper can absorb part of the kinetic energy of the vehicle, so that the damage to the vehicle is reduced. The valve in the damper can accelerate the reset of the deformed steel wire rope, so that the height limiting system can operate circularly;
3. the height limit height can be adjusted by a lifting system consisting of the winch, the steel wire rope and the movable cross beam, and the height limit device is suitable for height limit requirements of different highway grades.
Claims (10)
1. The utility model provides a flexible limit for height protection frame of over-and-under type based on attenuator which characterized in that is equipped with portal steel frame (1) and interception system, and interception system mainly comprises interception wire rope (2), rubber sleeve (3), pulley (4) and attenuator (5), wherein: the damper (5) is fixed at the bottom of the upright columns on two sides of the portal steel frame (1) through bolts, the intercepting steel wire ropes (2) transversely penetrate through the portal steel frame (1) and are connected with the tail ends of the piston rods (13), the rubber sleeves (3) wrap the intercepting steel wire ropes (2), when the ultrahigh vehicle passes through the portal steel frame (1), the ultrahigh vehicle can be blocked by the intercepting steel wire ropes (2) wrapped with rubber, the intercepting steel wire ropes (2) drive the damper (5) to move, and the generated damping force enables the ultrahigh vehicle to be forcedly decelerated.
2. The elevating flexible height-limiting protection frame based on the damper according to claim 1, wherein the damper (5) is mainly composed of piston rod (13), valve (15), piston (16), cylinder (18) components, wherein: the bottom of the cylinder body (18) is fixed on the ground through a base (17), and the top of the cylinder body (18) is completely closed and is only provided with a round hole to facilitate the inlet and outlet of the piston rod (13); the top of the piston rod (13) is provided with a round lifting lug (12) which is convenient for the connection of the steel wire rope and the damper.
3. The liftable flexible height-limiting protection frame based on a damper according to claim 2, wherein the piston (16) has a circular opening (21) in the middle and a groove beside the opening for installing the shutter (15); the side part of the valve (15) is provided with a pin hole (20) which is connected with the piston through a bolt.
4. The flexible elevating height-limiting protection frame based on damper according to claim 3, characterized in that the valve (15) is closed when the piston (16) moves upward, and the fluid can only flow through a circle of piston small holes (22) on the piston (16), and the resistance is increased; when the piston (16) moves downwards, the valve (15) is opened, and the fluid in the cylinder (18) flows through the circular opening (21), so that the resistance is reduced.
5. The flexible elevating height-limiting protection frame based on damper as claimed in claim 1, wherein there is a lifting system mainly composed of a hoist (6), a transmission wire rope (25), a vertical pulley (4), a movable beam (7), and the height of the height-limiting frame is controlled when the movable beam (7) moves upward or downward.
6. The lifting type flexible height-limiting protection frame based on the damper as claimed in claim 1, wherein the movable beam (7) is composed of an upper I-shaped steel and a lower I-shaped steel, pulleys (4) are arranged in the middle and on the outer side, and the transmission steel wire rope (25) passes through the movable beam (7) along two rollers to realize the change of direction; eight gears are arranged on the movable beam (7) and matched with the gears on the channel steel of the gate steel frame (1).
7. The lifting type flexible height-limiting protection frame based on the damper as claimed in claim 1, wherein the intercepting steel wire ropes (2) pass through the movable beams (7) at two sides of the portal steel frame, and the trend of the intercepting steel wire ropes (2) is changed by 90 degrees in the horizontal direction and then changed by 90 degrees in the vertical direction through the transmission of the two pulleys (4) in the movable beams (7), so that the effective transmission of the tensile force of the intercepting steel wire ropes (2) is ensured, and the installation of the damper (5) is also facilitated.
8. The lifting type flexible height-limiting protection frame based on the damper as claimed in claim 1, wherein the portal steel frame (1) is mainly formed by welding square pipes, local areas are connected through bolts, the installation of the structure is convenient, reinforced concrete needs to be embedded in two sides of a road before installation, the portal steel frame (1) is fixed through the bolts, and after the installation is successful, the portal steel frame (1) stretches across the road and mainly plays a role in supporting and warning.
9. The flexible elevating height-limiting protection frame based on damper as claimed in claim 1 or 8, characterized in that two side columns of the portal steel frame (1) are used for arranging the intercepting system and the elevating system.
10. The elevating type flexible height-limiting protection frame based on the damper according to claim 1 or 8, characterized in that when the ultrahigh vehicle passes through the portal steel frame (1), the ultrahigh vehicle is blocked by the intercepting steel wire rope (2), the intercepting steel wire rope (2) drives the damper (5) to move, and the generated damping force enables the ultrahigh vehicle to be forcedly decelerated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911293831.1A CN110984027B (en) | 2019-12-16 | 2019-12-16 | Lifting type flexible height limiting protection frame based on damper |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911293831.1A CN110984027B (en) | 2019-12-16 | 2019-12-16 | Lifting type flexible height limiting protection frame based on damper |
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| CN110984027A true CN110984027A (en) | 2020-04-10 |
| CN110984027B CN110984027B (en) | 2022-02-18 |
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| CN108316187A (en) * | 2018-04-26 | 2018-07-24 | 丁超 | Road flexibility arresting gear |
| CN110424295A (en) * | 2019-08-12 | 2019-11-08 | 中铁第四勘察设计院集团有限公司 | A kind of intelligent height-limiting frame with vehicle bumper function |
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2019
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100802422B1 (en) * | 2007-12-20 | 2008-02-13 | 주식회사 정인기술단 | Approach limit device for make control of height in tunnels |
| CN102338186A (en) * | 2011-09-02 | 2012-02-01 | 北京航空航天大学 | Conical damping hole type buffer for undercarriage of passenger plane |
| CN202579792U (en) * | 2012-05-31 | 2012-12-05 | 湖北航天技术研究院特种车辆技术中心 | Damping regulator |
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| CN110984027B (en) | 2022-02-18 |
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