CN113174884A - Town road side anti-falling device - Google Patents
Town road side anti-falling device Download PDFInfo
- Publication number
- CN113174884A CN113174884A CN202110383824.1A CN202110383824A CN113174884A CN 113174884 A CN113174884 A CN 113174884A CN 202110383824 A CN202110383824 A CN 202110383824A CN 113174884 A CN113174884 A CN 113174884A
- Authority
- CN
- China
- Prior art keywords
- guardrail
- rod
- wall
- sliding block
- vertical pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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Classifications
-
- 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
- E01F15/00—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
- E01F15/02—Continuous barriers extending along roads or between traffic lanes
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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
- E01F15/00—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
- E01F15/14—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact specially adapted for local protection, e.g. for bridge piers, for traffic islands
-
- 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
- E01F15/00—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
- E01F15/14—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact specially adapted for local protection, e.g. for bridge piers, for traffic islands
- E01F15/145—Means for vehicle stopping using impact energy absorbers
- E01F15/146—Means for vehicle stopping using impact energy absorbers fixed arrangements
Abstract
The invention discloses a municipal road side anti-falling device which comprises a support rod which is transversely driven, wherein a plurality of elastic supporting members are movably assembled on the support rod, and a bearing steel cable is arranged between the front and rear adjacent elastic supporting members in a penetrating manner; the elastic supporting component comprises a sleeve pipe and a vertical pipe, the sleeve pipe is transversely arranged, the vertical pipe is arranged at the bottom of the sleeve pipe, an end cover is in threaded connection with the lower end of the vertical pipe, a movable shaft penetrates through the axis of the end cover, a sliding block is arranged at the upper end of the movable shaft, the sliding block is matched with the inner wall of the vertical pipe, an energy-absorbing spring is sleeved on the movable shaft, the energy-absorbing spring acts between the sliding block and the end cover, a through hole is radially arranged at the outer wall of the sliding block in a penetrating mode, and a strip-shaped groove corresponding to the through hole is arranged at the outer wall of the vertical pipe; the device is arranged on the outer side of a road and used for bearing vehicles, and the vehicle is prevented from falling to cause vehicle damage and death.
Description
Technical Field
The invention relates to a municipal road side anti-falling device.
Background
When the road surface has dislocation from top to bottom (the road surface eminence horizontal plane of one side promptly), at this moment, need set up anti-falling device in the side of road, among the conventional art, carry out the protection of side direction through the limit guardrail, but the limit guardrail can only the individual layer protection, after the limit guardrail is clashed inefficacy, the risk that the vehicle can take place the tenesmus.
Therefore, the side anti-falling device of the municipal road is designed to be arranged on the outer side of the road and used for receiving vehicles and avoiding vehicle damage and people death caused by vehicle falling.
Disclosure of Invention
The invention aims to solve the technical problem of providing a municipal road side anti-falling device which is arranged on the outer side of a road and is used for receiving vehicles and avoiding vehicle damage and people death caused by vehicle falling.
In order to solve the problems, the invention adopts the following technical scheme:
a side anti-falling device for a municipal road comprises a support rod which is transversely driven, wherein a plurality of elastic supporting members are movably assembled on the support rod, and a bearing steel cable is arranged between the front and rear adjacent elastic supporting members in a penetrating manner;
the elastic supporting member comprises a sleeve pipe and a vertical pipe, the sleeve pipe is transversely arranged, the vertical pipe is arranged at the bottom of the sleeve pipe, an end cover is in threaded connection with the lower end of the vertical pipe, a movable shaft penetrates through the axis of the end cover, a sliding block is arranged at the upper end of the movable shaft, the sliding block is matched with the inner wall of the vertical pipe, an energy-absorbing spring is sleeved on the movable shaft, the energy-absorbing spring acts between the sliding block and the end cover, a through hole is radially arranged at the outer wall of the sliding block in a penetrating mode, a strip-shaped groove corresponding to the through hole is arranged at the outer wall of the vertical pipe, a bearing steel cable penetrates through the strip-shaped groove and the through hole, and a screw for fixing the bearing steel cable is screwed into the top of the sliding block;
the sleeve is sleeved on the support rod, and a first screw connected with the support rod is screwed in the outer wall of the sleeve.
Preferably, the lower end of the movable shaft is extended and inserted into the soil layer; the structure has the main functions of reducing the falling amplitude generated when the bearing steel cable is stressed and avoiding the fracture of the bearing steel cable or the failure of the energy-absorbing spring caused by overlarge falling amplitude; when a vehicle is separated from a road, the bearing steel cable is used for bearing, after the bearing steel cable is used for bearing, the bearing steel cable drives the sliding block to slide downwards, the energy absorption is buffered through the energy absorption spring, meanwhile, the lower end of the movable shaft is inserted into a soil layer, the stress of the energy absorption spring is reduced, the vehicle can be prevented from bouncing upwards after the energy absorption spring rebounds quickly, and the accidents caused after the vehicle bounces are reduced.
Preferably, the support rod is provided with a connecting seat, a flange plate is arranged on the left side of the connecting seat, an anchor rod is driven into the roadbed through the flange plate, the anchor rod is matched with a guardrail rod through the connecting seat, a base is arranged at the bottom of the guardrail rod, and the connecting seat penetrates through the base; the outer walls of the guardrail rods are provided with hoops, a guardrail plate is clamped between two adjacent guardrail rods through the hoops, and bolts are matched between the hoops and the guardrail plate; in the above-mentioned structure, compare in traditional limit guardrail, do not occupy the area that can pass of road, ensured the current width on road surface.
Preferably, a retainer ring is screwed on the connecting seat, a first energy absorbing spring is arranged on the connecting seat, and the first energy absorbing spring acts between the base and the retainer ring; when the guardrail plate or the guardrail rod is impacted, the first energy-absorbing spring can provide the guardrail rod with a moving amplitude, and the vehicle damage caused by hard collision can be reduced.
Preferably, the guardrail is a hollow rod, an opening is arranged at the upper end of the guardrail, a through hole radially penetrates through the outer wall of the guardrail, the guardrail plate is of a hollow structure, first through holes corresponding to the through holes are arranged at the front end face and the rear end face of the guardrail plate, a protection steel cable penetrates through the guardrail among the guardrail plates, and the protection steel cable penetrates through the guardrail through the first through holes; pouring concrete in the guardrail bar, and solidifying the concrete to the protective steel cable; in the structure, a plurality of guardrail rods can be connected through the built-in protective steel cables, when one guardrail plate is stressed, the force is transmitted and dispersed to the plurality of guardrail rods through the protective steel cables, the anti-collision grade is further improved, and the construction cost of the structure is relatively low.
Preferably, a sliding pipe capable of axially sliding is sleeved outside the vertical rod, a second screw connected with the vertical rod is arranged on the outer wall of the sliding pipe, a socket is arranged on the outer wall of the sliding pipe, a stop lever is arranged between the front socket and the rear socket which are opposite, and a third screw is matched between the socket and the stop lever; above-mentioned structure mainly is when the fracture takes place for the bearing steel cable, can play emergency protection's effect.
The invention has the beneficial effects that:
1) the device can be arranged on the side of the road, so that the falling event caused by the fact that the vehicle is separated from the road is avoided; particularly aiming at the mountain roads, the device can effectively avoid the risk that the vehicle falls off the cliff;
2) in the device, the bearing steel cable for bearing the vehicle body is supported by the elastic supporting component, when the vehicle collides with the side guardrail and the side guardrail is knocked out of a gap, the impact force of the vehicle body is lost, but the vehicle can drop, and the weight of the vehicle body can be effectively borne by the elastically supported bearing steel cable, so that the dropping force is buffered, the vehicle damage is reduced, and the personnel in the vehicle are protected;
3) before the device is used for road construction, the support rods are poured and fixed in advance, and only the support rods and the accessories need to be installed in the later period, so that the installation mode is simple;
4) the structure of this device is comparatively simple, and low cost is fit for using widely.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a front view of the resilient support member;
FIG. 3 is a cross-sectional view of the resilient support member;
FIG. 4 is an enlarged view of FIG. 1 at A;
FIG. 5 is a side view of a guardrail bar;
figure 6 is a schematic view of the engagement of a guardrail bar and a guardrail plate.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
Any feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
In the description of the present invention, it is to be understood that the terms "one end", "the other end", "outside", "upper", "inside", "horizontal", "coaxial", "central", "end", "length", "outer end", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.
Further, in the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise explicitly specified or limited, the terms "disposed," "sleeved," "connected," "penetrating," "plugged," and the like are to be construed broadly, e.g., as a fixed connection, a detachable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
As shown in fig. 1 to 6.
Example 1
A side anti-falling device for a municipal road comprises a support rod 1 which is transversely driven, a plurality of elastic supporting members 2 are movably assembled on the support rod 1, and a bearing steel cable 3 is arranged between the front and rear adjacent elastic supporting members 2 in a penetrating manner;
the elastic supporting member 2 comprises a sleeve 201 and a vertical pipe 202, the sleeve 201 is transversely arranged, the vertical pipe 202 is arranged at the bottom of the sleeve 201, an end cover 203 is in threaded connection with the lower end of the vertical pipe 202, a movable shaft 204 is inserted in the axis of the end cover 203, a sliding block 205 is arranged at the upper end of the movable shaft 204, the sliding block 205 is matched with the inner wall of the vertical pipe 202, an energy absorption spring 206 is sleeved on the movable shaft 204, the energy absorption spring 206 acts between the sliding block 205 and the end cover 203, a through hole 207 is radially arranged at the outer wall of the sliding block 205 in a penetrating manner, a strip-shaped groove 208 corresponding to the through hole 207 is arranged at the outer wall of the vertical pipe 202, the bearing steel cable 3 passes through the strip-shaped groove 208 and the through hole 207, and a screw 209 for fixing the bearing steel cable 3 is screwed in the top of the sliding block 205;
the sleeve 201 is sleeved on the support rod 1, and a first screw 210 connected with the support rod 1 is screwed in the outer wall of the sleeve 201.
Example 2
The lower end of the movable shaft 204 is extended and inserted into the soil layer; the structure has the main functions of reducing the falling amplitude generated when the bearing steel cable 3 is stressed and avoiding the fracture of the bearing steel cable 3 or the failure of the energy-absorbing spring caused by overlarge falling amplitude; when a vehicle is separated from a road, the bearing steel cable 3 is used for bearing, after the bearing steel cable 3 is used for bearing, the sliding block 205 is driven to slide downwards, buffering and energy absorption are performed through the energy absorption spring, meanwhile, the lower end of the movable shaft is inserted into a soil layer, the stress of the energy absorption spring is reduced, the vehicle can be prevented from bouncing upwards after the energy absorption spring rebounds, and the accident caused after the vehicle bounces is reduced.
Example 3
The support rod 1 is provided with a connecting seat 4, the left side of the connecting seat 4 is provided with a flange 401, an anchor rod 402 is driven in through the flange 401, the anchor rod 402 is driven in a roadbed, the connecting seat 4 is matched with a guardrail rod 5, the bottom of the guardrail rod 5 is provided with a base 501, and the connecting seat 4 penetrates through the base 501; a clamp 502 is arranged on the outer wall of each guardrail rod 5, a guardrail plate 6 is clamped between two adjacent guardrail rods 5 through the clamp 502, and a bolt 601 is matched between the clamp 502 and the guardrail plate 6; in the above-mentioned structure, compare in traditional limit guardrail, do not occupy the area that can pass of road, ensured the current width on road surface.
Example 4
A retainer ring 403 is screwed into the connecting seat 4, a first energy absorbing spring 404 is arranged on the connecting seat 4, and the first energy absorbing spring 404 acts between the base 501 and the retainer ring 403; when the guardrail plate 6 or the guardrail bar 5 is impacted, the first energy-absorbing spring 404 can provide the guardrail bar 5 with a moving amplitude, so that the vehicle damage caused by hard collision can be reduced.
Example 5
The guardrail plates 5 are hollow rods, openings are formed in the upper ends of the guardrail plates 5, through holes 511 are radially arranged on the outer walls of the guardrail plates 5 in a penetrating mode, the guardrail plates 6 are of a hollow structure, first through holes corresponding to the through holes 511 are formed in the front end face and the rear end face of each guardrail plate, protective steel cables 7 penetrate through the guardrail plates 5, and the protective steel cables 7 penetrate through the guardrail plates 5 through the first through holes; concrete is poured into the guardrail rods 5 and is solidified on the protective steel cables 7; in the above-mentioned structure, can couple together many guardrail bars 5 through built-in protection steel cable 7, when 6 atresss of a guardrail board, through 7 with dynamics transmission dispersion to many guardrail bars 5 of protection steel cable, and then promote anticollision grade, and this structure construction cost is lower relatively.
Example 6
A sliding tube 211 capable of sliding axially is sleeved outside the vertical rod 202, a second screw 212 connected with the vertical rod 202 is arranged on the outer wall of the sliding tube 211, a socket 213 is arranged on the outer wall of the sliding tube 211, a stop lever 214 is arranged between the front socket 213 and the rear socket 213 opposite to each other, and a third screw 215 is matched between the socket 213 and the stop lever 214; above-mentioned structure mainly is when the fracture takes place for bearing steel cable 3, can play emergency protection's effect.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The utility model provides a town road side anti-falling device which characterized in that: the support device comprises a support rod (1) which is transversely driven, wherein a plurality of elastic supporting members (2) are movably assembled on the support rod (1), and a bearing steel cable (3) is arranged between the front elastic supporting member and the rear elastic supporting member (2) in a penetrating manner;
the elastic supporting member (2) comprises a transversely arranged sleeve (201) and a vertical pipe (202) arranged at the bottom of the sleeve (201), an end cover (203) is connected to the lower end of the vertical pipe (202) in a threaded manner, a movable shaft (204) is inserted into the axis of the end cover (203), a sliding block (205) is arranged at the upper end of the movable shaft (204), the sliding block (205) is fitted with the inner wall of the vertical pipe (202), an energy absorbing spring (206) is sleeved on the movable shaft (204), the energy absorbing spring (206) is used between the sliding block (205) and the end cover (203), a through hole (207) is radially arranged at the outer wall of the sliding block (205) in a penetrating manner, a strip-shaped groove (208) corresponding to the through hole (207) is arranged at the outer wall of the vertical pipe (202), and the bearing steel cable (3) passes through the strip-shaped groove (208) and the through hole (207), a screw (209) for fixing the bearing steel cable (3) is screwed in the top of the sliding block (205);
the support rod is characterized in that the sleeve (201) is sleeved on the support rod (1), and a first screw (210) connected with the support rod (1) is screwed into the outer wall of the sleeve (201).
2. The town road side anti-falling device of claim 1, wherein: the lower end of the movable shaft (204) is extended and inserted into the soil layer.
3. The town road side anti-falling device of claim 1, wherein: a connecting seat (4) is assembled on the support rod (1), a flange plate (401) is arranged on the left side of the connecting seat (4), an anchor rod (402) is driven into the flange plate (401), the anchor rod (402) is driven into a roadbed, a guardrail rod (5) is matched with the connecting seat (4), a base (501) is arranged at the bottom of the guardrail rod (5), and the connecting seat (4) penetrates through the base (501); the outer wall department of guardrail bar (5) is provided with clamp (502), adjacent two pass through between guardrail bar (5) clamp (502) centre gripping has guardrail board (6), clamp (502) with bolt (601) have been cooperated between guardrail board (6).
4. The town road side fall preventing device of claim 3, wherein: a retainer ring (403) is screwed into the connecting seat (4), a first energy absorbing spring (404) is arranged on the connecting seat (4), and the first energy absorbing spring (404) acts between the base (501) and the retainer ring (403).
5. The town road side fall arrest device according to claim 3 or 4, wherein: the guardrail rod (5) is a hollow rod, an opening is formed in the upper end of the guardrail rod, through holes (511) radially penetrate through the outer wall of the guardrail rod (5), the guardrail plate (6) is of a hollow structure, first through holes corresponding to the through holes (511) are formed in the front end face and the rear end face of the guardrail plate, protective steel cables (7) penetrate through the guardrail rod (5) through the first through holes, and the protective steel cables (7) penetrate through the guardrail rod (5); and concrete is poured in the guardrail bar (5) and concretes the protective steel cable (7).
6. The town road side anti-falling device of claim 1, wherein: the outside cover of montant (202) is equipped with slidable sliding tube (211) of axial direction the outer wall department of sliding tube (211) is provided with the connection second screw (212) of montant (202) the outer wall department of sliding tube (211) is provided with socket (213), and is relative around be equipped with pin (214) between socket (213), socket (213) with third screw (215) have in the cooperation between pin (214).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110383824.1A CN113174884A (en) | 2021-04-09 | 2021-04-09 | Town road side anti-falling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110383824.1A CN113174884A (en) | 2021-04-09 | 2021-04-09 | Town road side anti-falling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113174884A true CN113174884A (en) | 2021-07-27 |
Family
ID=76924934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110383824.1A Withdrawn CN113174884A (en) | 2021-04-09 | 2021-04-09 | Town road side anti-falling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113174884A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030052875A (en) * | 2001-12-21 | 2003-06-27 | 재단법인 포항산업과학연구원 | Safety barrier with wire rope coupling device |
| KR100688149B1 (en) * | 2006-04-07 | 2007-03-02 | 김기수 | Supporting structure of parapet for steel bridge |
| CN207227953U (en) * | 2017-09-14 | 2018-04-13 | 信阳公路勘察设计院 | A kind of Novel road bridge safety guard rail structure |
| CN208959174U (en) * | 2018-08-14 | 2019-06-11 | 河南省通信建设监理有限公司 | A kind of steel tower engineering construction safety device |
| CN109972508A (en) * | 2019-04-18 | 2019-07-05 | 代国治 | A kind of collision prevention device of highway bridge |
| CN209228090U (en) * | 2018-12-03 | 2019-08-09 | 佛山科学技术学院 | One kind building construction building with anti-high-rise pendant object device |
| CN209556516U (en) * | 2018-12-18 | 2019-10-29 | 河南省交科公路勘察设计有限公司 | Crash-proof construction of the highway safety barrier |
| KR20200015965A (en) * | 2018-08-06 | 2020-02-14 | 신성이앤씨 주식회사 | Self-restoration type semi-rigid crash barrier |
| CN210684457U (en) * | 2019-08-12 | 2020-06-05 | 孙海宁 | Road and bridge rail guard |
| CN111593690A (en) * | 2020-05-21 | 2020-08-28 | 浙江机电职业技术学院 | Buffering formula highway rail guard |
| CN211689901U (en) * | 2020-01-11 | 2020-10-16 | 甘肃交通职业技术学院 | Bridge protective fence |
| CN112195758A (en) * | 2020-10-25 | 2021-01-08 | 李新旭 | Municipal administration bridge middle part protector |
-
2021
- 2021-04-09 CN CN202110383824.1A patent/CN113174884A/en not_active Withdrawn
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030052875A (en) * | 2001-12-21 | 2003-06-27 | 재단법인 포항산업과학연구원 | Safety barrier with wire rope coupling device |
| KR100688149B1 (en) * | 2006-04-07 | 2007-03-02 | 김기수 | Supporting structure of parapet for steel bridge |
| CN207227953U (en) * | 2017-09-14 | 2018-04-13 | 信阳公路勘察设计院 | A kind of Novel road bridge safety guard rail structure |
| KR20200015965A (en) * | 2018-08-06 | 2020-02-14 | 신성이앤씨 주식회사 | Self-restoration type semi-rigid crash barrier |
| CN208959174U (en) * | 2018-08-14 | 2019-06-11 | 河南省通信建设监理有限公司 | A kind of steel tower engineering construction safety device |
| CN209228090U (en) * | 2018-12-03 | 2019-08-09 | 佛山科学技术学院 | One kind building construction building with anti-high-rise pendant object device |
| CN209556516U (en) * | 2018-12-18 | 2019-10-29 | 河南省交科公路勘察设计有限公司 | Crash-proof construction of the highway safety barrier |
| CN109972508A (en) * | 2019-04-18 | 2019-07-05 | 代国治 | A kind of collision prevention device of highway bridge |
| CN210684457U (en) * | 2019-08-12 | 2020-06-05 | 孙海宁 | Road and bridge rail guard |
| CN211689901U (en) * | 2020-01-11 | 2020-10-16 | 甘肃交通职业技术学院 | Bridge protective fence |
| CN111593690A (en) * | 2020-05-21 | 2020-08-28 | 浙江机电职业技术学院 | Buffering formula highway rail guard |
| CN112195758A (en) * | 2020-10-25 | 2021-01-08 | 李新旭 | Municipal administration bridge middle part protector |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210727 |