CN201095730Y - Lifting deceleration frusta - Google Patents
Lifting deceleration frusta Download PDFInfo
- Publication number
- CN201095730Y CN201095730Y CNU2007200849038U CN200720084903U CN201095730Y CN 201095730 Y CN201095730 Y CN 201095730Y CN U2007200849038 U CNU2007200849038 U CN U2007200849038U CN 200720084903 U CN200720084903 U CN 200720084903U CN 201095730 Y CN201095730 Y CN 201095730Y
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- block body
- pier
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Abstract
The utility model relates to an elevation-type decelerating block enforcing a vehicle to speed down, a block body (1) is supported by two hydraulic cylinders and the height above the road surface of the block body is controlled by the elevation of a cylinder rod (2). The cylinder rod can be elevated under the action of the pressure of a high-pressure sealing device, which is formed by connecting two hydraulic cylinders (4), a four-way adapter (6) with two branch pipelines and pressure tanks (7) in sequence. The two branch pipelines are connected with each other in parallel, and each is provided with a valve. Part of the pressure tank as well as the interior of the pipeline from the hydraulic cylinder to the pressure tank is filled with liquid and the rest part of the pressure tank is filled with compressed gases. The two valves are respectively buried below the road surface on both sides of the block body and the transmission rod of the control valve is above the road surface. When a vehicle passes by, the wheel first forces down the transmission rod of the valve on one side of the block body. If the vehicle is at a comparatively low speed, the valve opens when the wheel reaches the block body, and then the wheel can force down the block body yet almost without any vibration. If the vehicle is at a comparatively high speed, the valve remains closed when the wheel reaches the block body, and then the wheel fails to force down the block body and the vibration is violent.
Description
Affiliated technical field
The utility model relates to a kind of device that is applied to field of traffic, particularly relates to a kind of road surfacing device of forcing vehicle deceleration---deceleration pier.
Background technology
At present, easily send out the location and often have on the road surface that the doorway, public place etc. of vehicle discrepancy locates in the accident of a lot of roads, laid the deceleration pier of forcing vehicle deceleration, these deceleration piers are stitched together by several pier bodies and cross whole road surface, whether the pier body all directly is fixed on the road surface and exceeds the road surface certain height, when vehicle passes through, no matter exceed the speed limit, the capital is produced vibrations by obstruction, and produces noise.Reduced potential safety hazard though lay this behave of deceleration pier, damaged car owner, passenger and near resident's interests, not only car owner and passenger's the person has been subjected to injury, vehicle body has been subjected to wrecking, and near resident also has been subjected to the influence of noise.Just because of these infringements are difficult to avoid, there are a lot of places of pressure vehicle deceleration that need not lay the deceleration pier, stayed many potential safety hazards.
Summary of the invention
The technical problem that the utility model solved is:
For overcome existing deceleration pier when forcing vehicle deceleration, but give car owner, passenger and near the resident caused impairment of benefit and the defective that can not be widely adopted, the utility model provides a kind of ascending/decending deceleration pier, this ascending/decending deceleration pier is when forcing vehicle deceleration, the vehicle that speed is lower than qualification speed does not produce vibrations substantially, but the vehicle that speed is higher than qualification speed then can produce sharp pounding, and the size of the speed of qualification can be regulated.Thereby this ascending/decending deceleration pier avoided unnecessary harm effectively, can be widely adopted.
The technical scheme that its technical problem that solves the utility model adopts is:
The pier body of this ascending/decending deceleration pier is supported by two parallel hydraulic cylinders, the pier body is fixed on the piston rod of two hydraulic cylinders, the cylinder sleeve of two hydraulic cylinders is fixed on the interior roadbed of mounting groove (groove that crosses the road surface of this ascending/decending deceleration pier is installed), the similar double-legged stool of the combined shaped of pier body and two hydraulic cylinders.The lifting of the piston rod of hydraulic cylinder can be controlled the height that the pier height goes out the road surface, and to go out the road surface higher for the pier height when the two-piston bar rises, and pier body end face is just equal with the road surface when the two-piston bar drops to extreme lower position.The two-piston bar can rise under the internal pressure effect of a high pressure seal, this high pressure seal includes two fluid cylinders of two hydraulic cylinders, a four-way connection, two laterals, two valves and a pressurized tank, being constructed as follows of whole high pressure seal: four-way connection has two pipe joints to be connected on respectively on two fluid cylinder mouths, all be connected to a lateral in two pipe joints in addition, article two, be equipped with a valve on the lateral, all be connected with the bottom of pressurized tank through two laterals behind the valve, pressurized tank is provided with valve inside.In this high pressure seal, two fluid cylinders, pressurized tank one suitable part and connect in the pipeline of fluid cylinder and pressurized tank and all be filled with liquid, the remainder of pressurized tank is filled with the gas of compression, thereby the high pressure in the whole high pressure seal is mainly produced by the gas that compresses in the pressurized tank.Because four-way connection can make four pipelines that connect thereon communicate with each other, so two lateral is a relation in parallel, promptly two valves are relations in parallel, it is following and keep one section suitable distance with the pier body that these two valves are embedded in the road surface of pier body both sides respectively, the drive link of by-pass valve control switch is fixed on the handle of valve and suitably exceeds the road surface, and drive link is parallel with the pier body and its length is short and the length of pier body.Be provided with gag lever post between the piston rod of hydraulic cylinder and the cylinder sleeve, gag lever post is a T shape screw rod, and piston rod is provided with the gag lever post screw, and cylinder sleeve is provided with postive stop baffle, the gag lever post stroke of cylinder sleeve of can the regulating piston bar coming in and going out, thereby also just can regulate the maximum height that the pier height goes out the road surface.After rising under the internal pressure effect of piston rod at high pressure seal of two hydraulic cylinders, it is higher that the pier height goes out the road surface, any one opens (or all opening) if in the valve of two parallel connections this moment, then the liquid in the high pressure seal can Compressed Gas and flow, the piston rod of hydraulic cylinder can descend after increasing certain pressure, vehicle by the time wheel can depress the pier body and not produce vibrations substantially; If the valve of two parallel connections is all closed, then the liquid in the high pressure seal can not flow, and the piston rod of hydraulic cylinder can not descend, vehicle by the time wheel can be exceeded the higher pier body in road surface and stop and produce sharp pounding.
Can realize above purpose automatically according to speed of a motor vehicle speed in order to make the utility model, and do not consume any energy, the operating principle of described valve is as follows: the open and close of valve are realized by the piston motion that the gas that compresses in its cylinder promotes in the valve, piston is provided with perforate, cylinder is provided with valve inside, the direction of motion of piston in piston sleeve is vertical with the flow direction of liquid in the valve, perforate direction on the piston is parallel with flowing to of the interior liquid of valve, and the outward appearance of whole valve is crux.When piston motion to appropriate location, perforate can be aimed at two pipe joints of valve, the pipeline at valve two ends is communicated with, i.e. valve open; When any side of perforate in two pipe joints, i.e. when perforate and two pipe joints were staggered, two pipe joints of valve were blocked by piston, i.e. valve closing.When this valve is in the state of waiting for operation, the handle that connects piston stretches out piston sleeve fully, perforate is in a side of pipe joint, valve is in closed condition, when piston being pushed into the position of limited block by lower handle, perforate has moved to the opposite side of pipe joint, valve still is in closed condition, at this moment, piston and handle can be in cylinder return slowly under the thrust of Compressed Gas, perforate can make two pipe joints of valve be communicated with a period of time, i.e. valve opening a period of times in the return process, piston and handle are got back to the position when waiting for operation again then, and valve is closed again.
When not having vehicle to pass through, the pier height goes out the road surface and is in the extreme higher position of qualification, and the drive link of the valve of pier body both sides also all exceeds the road surface, and two valves all are in closed condition.When vehicle passes through, wheel is depressed the drive link of pier body one side earlier, the handle of valve that drive link is depressed its below again is depressed into piston the position of limited block, if the speed of a motor vehicle is lower than qualification speed, then when wheel movement arrives the pier body, the valve that drive link is depressed is opened, and wheel can be depressed the pier body and pass through, and does not produce vibrations substantially; If the speed of a motor vehicle is higher than qualification speed, then when wheel movement during to the pier body, the valve that drive link is depressed is not also opened, and wheel can not be depressed the pier body, by the time generation sharp pounding.After wheel passes through, before valve closing, the piston rod of hydraulic cylinder gos up under the internal pressure effect of high pressure seal again automatically, the pier body is got back to the extreme higher position of qualification, the piston of valve, handle and drive link also all go back up to original position automatically under the thrust of Compressed Gas in cylinder then, and valve is closed again.
In addition, on unidirectional track, can adopt one-way type pier body, remove valve and lateral that the vehicle that drives in the wrong direction uses, four-way connection is used tee junction instead.
Described ascending/decending deceleration pier when the volume of the pipeline between valve and the pressurized tank enough when big (greater than the volume sum of two fluid cylinders), can all be filled the gas of compression in the pressurized tank.
Piston in the described ascending/decending deceleration pier, its valve also can promote with spring separately, can also promote simultaneously with the gas of spring and compression.
Described ascending/decending deceleration pier on every lateral, also can be established the valve of two or more parallel connections.
Described ascending/decending deceleration pier, its gag lever post screw also can be located on the pier body, and the position of gag lever post screw and postive stop baffle can exchange, and exchanges the back gag lever post and also need be inverted.
The beneficial effects of the utility model are:
When forcing vehicle deceleration, the vehicle that speed is lower than qualification speed does not produce vibrations substantially, has avoided car owner and passenger's impairment of benefit, has eliminated noise; The vehicle that speed is higher than qualification speed then can produce sharp pounding, has played the positive effect that impels to forcing vehicle deceleration, thereby can be widely adopted.
The utility model many places utilize air pressure and are provided with valve inside, so can regulate the sensitivity of pier body lifting and the sensitivity of valve inner carrier motion by regulating air pressure, the sensitivity of valve inner carrier motion has directly determined to limit the size of the speed of a motor vehicle again.
The piston rod and the gag lever post between the cylinder sleeve of hydraulic cylinder can be regulated the maximum height that the pier height goes out the road surface, and the maximum height that the pier height goes out the road surface has directly determined the vibrations degree of over-speed vehicles again.When not needing to use the utility model, can the pier body be transferred to the position equal with the road surface with gag lever post, also can directly exit to pressurized tank.
So the utility model is compared with existing deceleration pier, kept do not consume the advantage of any energy in, overcome defective, and had very strong controllability.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples:
Fig. 1 is the A--A sectional drawing of embodiment 1 of the present utility model;
Fig. 2 is a valve scheme of installation of the present utility model;
Fig. 3 is the sectional view that pier body and hydraulic cylinder follow the car direction;
Fig. 4 is the A--A sectional drawing of three kinds of groundwork states of valve;
Fig. 5 is that the piston of valve and handle are along the sectional view perpendicular to the perforate direction;
Fig. 6 is two kinds of location diagrams of valve and drive link;
Fig. 7 is a pier side view;
Fig. 8 is a pier body vertical view;
Fig. 9 is the top plane view of hydraulic cylinder piston rod;
Figure 10 is the ground plan of hydraulic cylinder cylinder sleeve;
Figure 11 is the A--A sectional drawing of embodiment 2 of the present utility model.
Among the figure: 1. pier body 2. piston rods 3. cylinder sleeves 4. fluid cylinders 5. fluid cylinder mouths 6. four-way connections 7. pressurized tanks 8. valve insides 9. gag lever posts 10. gag lever post screws 11. postive stop baffles 12. dust-separation caps 13. gag lever post adjustment holes 14. pipe joints 15. drive link 16. valves, 17. road surfaces 18 (18a, 18b). lateral 19. pipe joint 20. pipe joints, 21. handles 22 (22a, 22b). piston 23. piston sleeves 24. perforates 25. pipe joints 26. cylinders 27. limited blocks 28. valve insides 29. balance limiting holes 30. screw rod jacks 31. screws 32. screw rod jacks
The specific embodiment
Embodiment 1:
Referring to shown in Figure 1, pier body 1 is fixed on the end face of piston rod 2 of two hydraulic cylinders, and pressurized tank 7 is located between two hydraulic cylinders, and the top of pressurized tank 7 is provided with a valve inside 8, and four-way connection 6 has two relative pipe joints 14 to be connected on respectively on two fluid cylinder mouths 5; Again referring to shown in Figure 2 (during actual installation, the lateral of valve both sides should come together, to separate for the ease of watching among the figure), article two, lateral 18 is connected on respectively in two other pipe joint 19 of four-way connection 6, a valve 16 is all arranged on two laterals 18, the road surface that two valves 16 are embedded in pier body 1 both sides respectively keeps one section suitable distance below 17 and with pier body 1, the lateral 18 that connects valve 16 also is embedded in the road surface below 17, only the drive link 15 with by-pass valve control 16 exposes road surface 17 certain altitudes, and guarantee vehicle by the time wheel can depress drive link 15, drive link 15 is depressed the handle 21 of valve 16 again and piston 22 can be depressed into the position (referring to shown in Figure 4) of limited block 27, be connected on respectively in two pipe joints 20 of pressurized tank 7 belows through two laterals 18 behind the valve 16, pressurized tank 7 is provided with valve inside 8.
Two fluid cylinders 4, four-way connection 6, two laterals 18 and pressurized tank 7 one suitably part fill by liquid, the remainder of pressurized tank 7 is filled by the gas of compression.Must not residual gas at the liquid filling part, when two-piston bar 2 dropped to extreme lower position, promptly when the liquid in two fluid cylinders 4 was all drained, the volume of liquid should not referred and not synthesized to guarantee gas and liquid mutually greater than the volume sum of two fluid cylinders 4 in the pressurized tank 7.The size of pressurized tank 7 internal gas pressures should satisfy a condition: after wheel was by second drive link 15, the piston rod 2 of hydraulic cylinder and pier body 1 can in time go back up to original position before second valve 16 closed at the latest.Hydraulic cylinder, four-way connection 6, connection four-way connection 6 all will have good sealing and can bear very big pressure with the lateral 18a and the valve 16 of valve 16; As long as connect the lateral 18b and the pressurized tank 7 of valve 16 and pressurized tank 7 good sealing is arranged, the requirement of bearing high pressure does not need very high.Resistance when reducing liquid flow in the pipeline, the bore of lateral 18 is more preferably greater than the bore of fluid cylinder mouth 5.
Referring to shown in Figure 1, on the gag lever post 9 screw thread is arranged, its upper end has the groove line that can coincide with screwdriver on end face, and there is the suitable cap of size and postive stop baffle 11 lower end.Gag lever post screw 10 is located on the piston rod 2, postive stop baffle 11 is located on the cylinder sleeve 3, there is a big slightly circular hole of relative aperture gag lever post 9 diameters at the center of postive stop baffle 11, and gag lever post 9 can pass this circular hole from the below of postive stop baffle 11, is screwed into gag lever post screw 10 then.Gag lever post adjustment hole 13 on the pier body 1 can insert the back for screwdriver and regulate gag lever post 9, and dust-separation cap 12 can be blocked gag lever post adjustment hole 13, prevents that earth from entering gag lever post adjustment hole 13.
Referring to shown in Figure 4, piston 22 tops are provided with the handle 21 that is attached thereto, and the centre is provided with the perforate 24 of along continuous straight runs, and the below is provided with cylinder 26.Piston 22 can move up and down in piston sleeve 23, the inwall of piston sleeve 23 lower ends is provided with two limited blocks 27, can block for limited 27 when piston 22 moves downward the position of limited block 27, the piston sleeve 23 of limited block 27 belows is provided with valve inside 28.In figure a, piston 22 is in the extreme higher position, and handle 21 stretches out piston sleeve 23 fully, and perforate 24 is above two pipe joints 25, and two pipe joints 25 are blocked by piston 22b, and valve 16 is in closed condition; In figure b, piston 22 mediates, and perforate 24 is aimed at two pipe joints 25, and two pipe joints 25 are communicated with, and valve 16 is in opening; In figure c, piston 22 is in extreme lower position, and its lower end contacts with limited block 27, and perforate 24 is below two pipe joints 25, and two pipe joints 25 are blocked by piston 22a, and valve 16 is in closed condition.
The stroke that piston 22 moves up and down in piston sleeve 23 is preferably 2 to 3 centimetres, under the prerequisite of the movement travel that does not increase piston 22, in order to increase the sectional area of perforate 24 and pipe joint 25, the cross section of perforate 24 and pipe joint 25 can be done ovalisation (referring to shown in Figure 5) or rectangle.The height of the height of perforate 24 internal cavities and pipe joint 25 internal cavities can not wait, but the height of piston 22a, the 22b of perforate 24 both sides all must be greater than the height of pipe joint 25 internal cavities, and two pipe joints 25 are blocked fully when guaranteeing that perforate 24 and two pipe joints 25 are staggered.Piston 22 is preferably elliptical cylinder-shape, makes perforate 24 can not aim at two pipe joints 25 to prevent piston 22 from rotating in piston sleeve 23.
Referring to shown in Figure 6, when mounted valve 16 and drive link 15, two kinds of mounting meanss among figure a and the figure b are arranged.The below of drive link 15 has only a valve 16 among the figure a, valve 16 is located at the centre of drive link 15, the two ends of drive link 15 are provided with balance limiting hole 29, and drive link 15 tilts and can not depress the handle 21 and the piston 22 of valve 16 fully when preventing pressure wheel underdrive bar 15; The below of drive link 15 has two valves, 16, two valves 16 to be located at the two ends of drive link 15 among the figure b, and is still relation in parallel.
The valve 16 of a plurality of parallel connections also can be established in drive link 15 belows.Drive link 15 and pier body 1 parallel and preferably with apart about 0.5 meter of pier body 1, its length is equal to or slightly greater than the length of pier body 1.
Referring to shown in Figure 7, wherein scheming a is common (two-way type) pier body 1, the similar isosceles trapezoid of its lateral view; Figure b is an one-way type pier body 1, the similar right-angled trapezium of its lateral view, and the arrow points of figure top is a direction of traffic.
Referring to Fig. 8, shown in Figure 9, have eight screw rod jacks 30 and two gag lever post adjustment holes 13 on the pier body 1, screw rod jack 30 is corresponding one by one with the screw 31 of piston rod 2 end faces of hydraulic cylinder, and gag lever post adjustment hole 13 is corresponding with gag lever post 9.Pier body 1 can be used bolt with the piston rod 2 of hydraulic cylinder.
Referring to shown in Figure 10, there are four screw rod jacks 32 cylinder sleeve 3 bottom surfaces of hydraulic cylinder.Cylinder sleeve 3 can be fixed on the roadbed in the mounting groove with expansion bolt, and the width of mounting groove should be wideer slightly than pier body 1, and the degree of depth should guarantee that the end face of piston rod 2 pier body 1 when dropping to extreme lower position of hydraulic cylinder is just equal with road surface 17.
The length of each pier body 1 is preferably 30 to 50 centimetres, and width is preferably 15 to 20 centimetres, and several ascending/decending deceleration piers are stitched together and just can cross whole road surface.If the pressurized tank 7 usefulness pipelines of all ascending/decending deceleration piers that are stitched together are communicated with, a shared then valve inside 8, and with these valve inside 8 usefulness pipelines be placed in the roadside after pressurized tank 7 is connected, the required pressure of pier body 1 under the pressure wheel in the time of can reducing valve 16 and open, strengthen the convenience of regulating pressurized tank 7 internal gas pressures.The cylinder 26 of valve 16 and valve inside 28 adopts this method, can reduce to depress the required pressure of drive link 15, strengthen the convenience of regulating cylinder 26 internal gas pressures.
Liquid in the described high pressure seal can adopt water, but preferably adopts hydraulic oil, and gas can adopt air.
Embodiment 2:
Referring to shown in Figure 11, compared to Figure 1 Figure 11 does not have between two hydraulic cylinders the pressurized tank 7, and all the other are identical with Fig. 1.
In the present embodiment, the bigger pressurized tank 7 of the shared volume of the ascending/decending deceleration pier that all are stitched together, this pressurized tank 7 is placed in roadside (can be embedded in underground), also be provided with valve inside 8 on it, all through the lateral 18b behind valves 16 all merge in one with pipeline that pressurized tank 7 bottoms link to each other on.In this case, the volume of the pipeline between valve 16 and the pressurized tank 7 may be greater than the volume sum of two fluid cylinders 4, thereby can all fill in the pressurized tank 7 by the gas of compression, but refer and synthesize mutually in order to prevent gas and liquid, the intersection of gas and liquid in pipeline should guarantee that the gas part is higher than the liquid part on the orientation.
Present embodiment is compared with embodiment 1, and except that the installation site of the connected mode of lateral 18 and pressurized tank 7 and pressurized tank 7 changed to some extent, all the other were identical with embodiment 1, can be with reference to embodiment 1.
Claims (5)
1. an ascending/decending deceleration pier includes pier body (1), it is characterized in that: the pipeline that also includes hydraulic cylinder, valve (16), pressurized tank (7) and connect these parts, described valve (16) are located on the pipeline that connects hydraulic cylinder and pressurized tank (7); In the fluid cylinder of hydraulic cylinder (4), connect in the pipeline of hydraulic cylinder and pressurized tank (7) and all be filled with liquid, be filled with the gas of compression in the pressurized tank (7).
2. ascending/decending deceleration pier according to claim 1 is characterized in that: be provided with piston (22) in the valve (16), also be provided with cylinder (26) or/and spring, described piston (22) is provided with perforate (24); Handle (21) links to each other with piston (22).
3. ascending/decending deceleration pier according to claim 2 is characterized in that: the piston (22) of valve (16) is cylindrical or elliptical cylinder-shape.
4. ascending/decending deceleration pier according to claim 1 is characterized in that: be provided with a valve (16) or be provided with several valves in parallel (16) on the pipeline that connects hydraulic cylinder and pressurized tank (7).
5. ascending/decending deceleration pier according to claim 1 is characterized in that: pressurized tank (7) is provided with valve inside (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200849038U CN201095730Y (en) | 2007-05-28 | 2007-05-28 | Lifting deceleration frusta |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200849038U CN201095730Y (en) | 2007-05-28 | 2007-05-28 | Lifting deceleration frusta |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201095730Y true CN201095730Y (en) | 2008-08-06 |
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ID=39922781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200849038U Expired - Fee Related CN201095730Y (en) | 2007-05-28 | 2007-05-28 | Lifting deceleration frusta |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201095730Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102286948A (en) * | 2011-08-24 | 2011-12-21 | 淮阴工学院 | Road deceleration cushion device capable of automatic lifting |
| CN103132471A (en) * | 2013-01-31 | 2013-06-05 | 北京工业大学 | Piston-type changeable road speed limiting control device |
| CN103669243A (en) * | 2013-11-25 | 2014-03-26 | 无锡睿网科技有限公司 | Air pressure buffer deceleration strip |
| CN105603898A (en) * | 2016-03-02 | 2016-05-25 | 成都来宝石油设备有限公司 | Road marking device for oil tank truck |
| CN106758919A (en) * | 2017-03-02 | 2017-05-31 | 招商局重庆交通科研设计院有限公司 | Deceleration driven |
| CN109487733A (en) * | 2019-01-17 | 2019-03-19 | 河南中原高速公路股份有限公司郑开分公司 | A kind of vertical attachment device of concrete movable rail |
| CN112301902A (en) * | 2019-07-26 | 2021-02-02 | 王绍宇 | Valve type deceleration strip |
| CN113062247A (en) * | 2021-04-08 | 2021-07-02 | 朱剑霞 | Can be at highway rail guard of bradyseism when striking |
-
2007
- 2007-05-28 CN CNU2007200849038U patent/CN201095730Y/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102286948B (en) * | 2011-08-24 | 2013-08-14 | 淮阴工学院 | Road deceleration cushion device capable of automatic lifting |
| CN102286948A (en) * | 2011-08-24 | 2011-12-21 | 淮阴工学院 | Road deceleration cushion device capable of automatic lifting |
| CN103132471A (en) * | 2013-01-31 | 2013-06-05 | 北京工业大学 | Piston-type changeable road speed limiting control device |
| WO2014117420A1 (en) * | 2013-01-31 | 2014-08-07 | 北京工业大学 | Piston-type variable road speed limit control device |
| CN103669243A (en) * | 2013-11-25 | 2014-03-26 | 无锡睿网科技有限公司 | Air pressure buffer deceleration strip |
| CN105603898B (en) * | 2016-03-02 | 2018-11-02 | 成都知融智创知识产权运营有限公司 | The automobile-used lines on road surface equipment of oil tank |
| CN105603898A (en) * | 2016-03-02 | 2016-05-25 | 成都来宝石油设备有限公司 | Road marking device for oil tank truck |
| CN106758919A (en) * | 2017-03-02 | 2017-05-31 | 招商局重庆交通科研设计院有限公司 | Deceleration driven |
| CN106758919B (en) * | 2017-03-02 | 2018-11-02 | 招商局重庆交通科研设计院有限公司 | Deceleration driven |
| CN109487733A (en) * | 2019-01-17 | 2019-03-19 | 河南中原高速公路股份有限公司郑开分公司 | A kind of vertical attachment device of concrete movable rail |
| CN109487733B (en) * | 2019-01-17 | 2024-02-06 | 河南中原高速公路股份有限公司郑开分公司 | Vertical connecting device for concrete movable guardrail |
| CN112301902A (en) * | 2019-07-26 | 2021-02-02 | 王绍宇 | Valve type deceleration strip |
| CN113062247A (en) * | 2021-04-08 | 2021-07-02 | 朱剑霞 | Can be at highway rail guard of bradyseism when striking |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080806 Termination date: 20140528 |