CN114232535A - Portal of self-moving type guardrail - Google Patents
Portal of self-moving type guardrail Download PDFInfo
- Publication number
- CN114232535A CN114232535A CN202210017592.2A CN202210017592A CN114232535A CN 114232535 A CN114232535 A CN 114232535A CN 202210017592 A CN202210017592 A CN 202210017592A CN 114232535 A CN114232535 A CN 114232535A
- Authority
- CN
- China
- Prior art keywords
- guardrail
- guide
- self
- frame
- moving
- 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.)
- Granted
Links
Images
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
- E01F15/006—Lane control by movable lane separating barriers, e.g. shiftable barriers, retractable kerbs ; Apparatus or barriers specially adapted therefor, e.g. wheeled barriers
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
Abstract
A portal frame of a self-moving guardrail realizes a self-opening function while a movable guardrail has an anti-collision function by applying an end part guide guardrail, a guide frame and a guardrail translation device, and comprises the end part guide guardrail and the guide frame; the guide rail is fixed on the base, arranged between the door frames along the direction of the opening at the middle belt and at least extended to the lower layer space; the guardrail translation device comprises a gear rack transmission mechanism and is arranged on the gantry, a motor of the gantry is used for controlling the movable guardrail to automatically move along the guide rail, the labor intensity of workers can be greatly reduced, the working efficiency and the safety are improved, and a foundation is laid for the automatic control of products in the field of highways.
Description
Technical Field
The invention belongs to the technical field of highway safety protection equipment, and particularly relates to a portal frame of a self-moving guardrail.
Background
In order to facilitate the overhaul of vehicle traffic and the emergency traffic of vehicles during the maintenance of the highway, the median strip of the highway is provided with an opening at intervals. In order to ensure safe and orderly traffic, the opening of the section is usually provided with a guardrail to separate two sides of the highway, and the guardrail is opened when traffic demands exist.
At present, a central division strip opening guardrail usually adopts a multi-section connection mode, two end parts are fixed on a road surface, middle section guardrails are connected through a pin shaft, when passing needs exist, the pin shaft at the corresponding middle section guardrail is pulled out through manpower according to the size of a passing vehicle or the length of an opening, then the middle section guardrail is pushed to a nearby empty space, and the middle section guardrail is moved to a corresponding position to be connected and fixed through the pin shaft after the passing vehicle passes through. The multi-section connection type middle-division opening guardrail is low in working efficiency, and the danger is high when the guardrail is opened by manual operation on a highway.
Disclosure of Invention
The invention provides a portal frame of a self-moving guardrail, which has an anti-collision function, can realize a self-opening function of the guardrail, greatly reduces the labor intensity of workers, improves the working efficiency and the safety, and lays a foundation for realizing the automatic control of products in the field of highways.
The technical scheme of the invention is as follows:
a portal frame of a self-moving guardrail comprises an end part guide guardrail and a guide frame; the guide frame comprises a base and a plurality of side upright posts; one end of the end part guide guardrail is fixed on the side upright post, and the other end of the end part guide guardrail facing to the opening direction is contracted and extended to form a smooth transition outer inclined plane; the guide frame is divided into an upper layer space and a lower layer space by a middle frame which is arranged between the side upright posts in parallel with the base; the lower layer space is used for enabling a movable guardrail to pass through, the upper layer space is provided with a guardrail positioning device, and the guardrail positioning device penetrates through the middle frame to be movably clamped and connected to the movable guardrail;
preferably, the upper space is provided with a scissor type lifting device, the scissor type lifting device comprises a scissor type lifting frame and a limiting upright post, and the limiting upright post is hung at the top of the scissor type lifting frame; a guide sleeve is arranged right above the middle frame deviating from the guide rail; when the scissor-fork type lifting frame is lifted up and down, the limiting upright post moves up and down through the guide sleeve; correspondingly, two ends of the movable guardrail are provided with limiting sleeves.
Preferably, a lifting platform is arranged at the top of the scissor type lifting frame along the direction of the opening, and the two limiting upright posts are symmetrically arranged at two ends of the lifting platform.
Preferably, the limiting upright post is hung on a bottom hanging lug of the lifting platform through a fisheye joint bearing, and the bottom surface of the limiting upright post is an arc-shaped surface.
Preferably, the scissor type lifting frame is fixed on the middle frame and comprises a scissor type hydraulic lifting frame.
Preferably, the base is provided with a limiting hole, and the limiting hole is arranged right opposite to the guide sleeve.
Preferably, the base comprises a cement base.
Preferably, the inner side of the side upright is provided with a guide wheel with an axis parallel to the axis of the side upright.
Preferably, the guide frame comprises a plurality of side columns symmetrically arranged on two sides of the guide rail, a front bearing surface is formed between the side columns positioned on the front side of the guide rail through a plurality of welded oblique columns, and a rear bearing surface is formed between the side columns positioned on the rear side of the guide rail through a plurality of welded oblique columns.
Preferably, the portal frame of the self-moving guardrail further comprises a guardrail translation device, the guardrail translation device comprises a rack and pinion transmission mechanism and a motor arranged on the guide frame, an output shaft of the motor is provided with a gear of the rack and pinion transmission mechanism, and a rack of the rack and pinion transmission mechanism is arranged on the guardrail; and a guide rail for moving the common guardrail is arranged on the lower-layer space base.
The utility model provides a from removal type guardrail, includes portable guardrail and two relative setting the portal of self-moving type guardrail.
Compared with the prior art, the invention has the advantages that:
1. according to the portal frame of the self-moving guardrail, the movable guardrail has an anti-collision function and simultaneously realizes a self-opening function by applying the end part guide guardrail, the guide frame and the guardrail translation device, so that the manual labor intensity is greatly reduced, the working efficiency and the safety are improved, and a foundation is laid for realizing the automatic control of products in the field of roads.
2. According to the portal frame of the self-moving guardrail, the scissor type lifting device is installed on the portal frame, when the movable guardrail is in a closed state, the scissor type lifting device is in a contraction state, the limiting upright posts of the scissor type lifting device are clamped into the movable guardrail or the limiting sleeve of the movable guardrail through the guide sleeve on the portal frame, the movable guardrail is firmly limited at a fixed position and cannot move, and further can extend into the limiting hole on the base, namely the underground, so that the anti-collision function of the whole device is further improved. When the vehicle needs to pass, the scissor type lifting device is in an extending state, the limiting upright post rises from the movable guardrail or the limiting sleeve of the movable guardrail and stops acting after being pulled out, and then the translation door motor drives the gear rack to drive the gear rack to open the movable guardrail, so that the vehicle can safely pass through the opening of the central belt. The installation is convenient, the operation is simple, and the safety in the operation process is improved; the overhead lifting limiting upright post is adopted, so that the difficulty of underground construction is reduced, and the expense is saved; and the technical development of guardrail translation and rack and pinion transmission is pure and well-done, and the cost can be effectively controlled.
3. According to the portal frame of the self-moving guardrail, the end part guide guardrail fixed at the front end of the side upright post is connected with the guide frame, so that a collided vehicle can be stably guided out, the greater danger caused by head-on collision on the guide frame is avoided, the rear end of the guide frame is divided into two layers, and the lower layer space is used for enabling the movable guardrail to freely pass through. Meanwhile, the guide wheels are arranged on the inner sides of the side upright columns, so that the guide wheels play a role in guiding the guardrail in the moving process and can prevent the guardrail from directly colliding against the side upright columns when the guardrail turns over. The upper space is the installation space of the scissor-fork type lifting device, the middle frame is provided with the guide sleeve, and the limiting stand column is positioned in the guide sleeve in any state, so that the positioning precision of the limiting stand column is improved.
4. According to the portal frame of the self-moving guardrail, the lifting platform at the top of the scissor-type lifting frame is provided with the lifting lugs and is connected with the limiting upright post through the fisheye joint bearing, so that the limiting function is realized, the fisheye joint bearing can move in all directions, and errors caused by installation and positioning of the limiting upright post can be compensated. And the bottom of the limiting upright post is provided with a certain radian, so that the problem that the upper pipe and the lower pipe are staggered to cause no penetration in the penetrating process is solved.
Drawings
Fig. 1 is a front view of a gantry of the self-moving type guard rail according to the present invention;
fig. 2 is a schematic view of a three-dimensional structure of a gantry of the self-moving type guard rail according to the present invention;
fig. 3 is a front view schematically illustrating a scissor lift device for a door frame of a self-moving fence according to the present invention;
FIG. 4 is a schematic side view of a scissor lift crane for a door frame of the self-moving fence according to the present invention;
fig. 5 is a schematic structural view of the self-moving type guard rail according to the present invention;
FIG. 6 is a schematic view of the overall front view of the movable fence according to the present invention;
FIG. 7 is a schematic cross-sectional view of the movable guard rail of the present invention;
fig. 8 is a flowchart illustrating the operation of the self-moving type guard rail according to the present invention.
The reference numbers in the figures are:
1-portal, 11-end guide guardrail, 111-translation channel, 12-guide frame, 121-side upright post, 122-middle frame, 1221-guide sleeve, 123-guide wheel, A-upper space, B-lower space, 2-base, 21-limiting hole, 3-guide rail, 4-guardrail translation device, 41-gear rack transmission mechanism, 411-rack, 42-motor, 5-movable guardrail, 51-bilateral rail wheel, 52-limiting sleeve, 53-longitudinal truss, 54-middle support, 6-scissor lifting device, 61-scissor lifting platform, 611-lifting platform, 612-bottom lug, 62-limiting upright post, 63-fisheye joint bearing, 7-highway guardrail and 8-transition guardrail.
Detailed Description
In order to facilitate an understanding of the invention, the invention is described in more detail below with reference to the accompanying drawings and specific examples. In the present invention, "inner" refers to a direction close to the axis of the movable fence, and "outer" refers to a direction away from the axis of the movable fence.
A self-moving barrier portal 1, as shown in fig. 1-2, comprises an end guide barrier 11 and a guide frame 12; the guide frame 12 comprises 6 side upright posts 121; one end of the end guide guardrail 11 is fixed to the side upright post 121, the other end towards the opening direction is inwardly contracted and extended to form a smooth transition outer inclined plane, a translation channel 111 is arranged at the middle position of the end guide guardrail 11, and the translation channel 111 is used for enabling the movable guardrail 5 to smoothly pass through the portal frame 1. The smooth transition outer ramp surface can guide a colliding vehicle smoothly out without causing greater risk of head-on collision against the guide frame 12.
Preferably, as shown in fig. 2, the 6 side columns 121 are symmetrically disposed on the front and rear sides of the guide rail 3, the front 3 columns form the front bearing surface of the guide frame through the welded oblique columns, and the rear 3 columns form the rear bearing surface of the guide frame through the welded oblique columns.
Preferably, the guide frame 12 is divided into an upper space a and a lower space B by an intermediate frame 122 disposed between the side uprights 121 in parallel to the base 2; the highway guardrail 7 is fixed on the side upright posts 121 through transition guardrails 8; the guide rail 3 is fixed on the base 2, arranged between the door frames 1 along the opening direction of the middle belt and at least extended to the lower layer space B; so that the movable fence 5 is smoothly opened and closed.
Preferably, the guardrail translation device 4 comprises a rack and pinion transmission mechanism 41 and a motor 42 arranged on the gantry 1, and an output shaft of the motor 42 is provided with a gear of the rack and pinion transmission mechanism 41; correspondingly, a rack 411 of the rack and pinion transmission 41 is arranged along the guide rail 3. The movable guardrail 5 is positioned in the lower-layer space B, and the bottom of the movable guardrail 5 is provided with a bilateral rail wheel 51 matched with the guide rail 3.
Preferably, as shown in fig. 3 to 4, the upper space a is provided with a scissor type lifting device 6, the scissor type lifting device 6 comprises a scissor type lifting frame 61 and a limiting upright post 62, and the limiting upright post 62 is suspended on the top of the scissor type lifting frame 61; a guide sleeve 1221 is arranged right above the middle frame 122 deviating from the guide rail 3; when the scissor type lifting frame 61 is lifted up and down, the limiting upright column 62 is always positioned in the guide sleeve 1221 and moves up and down, so that the positioning precision of the limiting upright column 62 is improved. And when the movable guardrail 5 is in a closed state, the limiting upright post 62 passes through the guide sleeve 1221 and extends into the limiting sleeve 52 of the movable guardrail 5, so that the positioning is realized.
Preferably, a lifting platform 611 is arranged at the top of the scissor type lifting frame 61 along the direction of the opening, and the two limit upright posts 62 are symmetrically arranged at two ends of the lifting platform 611.
Preferably, the limit upright post 62 is suspended on the bottom hanging lug 612 of the lifting platform 611 through a fisheye joint bearing 63, and the fisheye joint bearing 63 can move in all directions, so that errors caused by installation and positioning can be compensated. And the bottom surface of the limiting upright post 62 is an arc-shaped surface, so that the problem that the upper pipe and the lower pipe are staggered to cause no penetration or clamping in the penetrating process is avoided.
Preferably, the scissor lift truck 61 is fixed to the middle frame 122 and comprises a scissor hydraulic lift truck.
Preferably, the base 2 is provided with a limiting hole 21 opposite to the guide sleeve 1221. So that the limit post 62 passes through the limit sleeve 52 and is inserted into the base 2 made of concrete or cement, and the anti-collision function of the movable guardrail 5 is further improved.
Preferably, a guide wheel 123 is disposed on the inner side of the side column 121, and the axis of the guide wheel 123 is parallel to the axis of the side column 121. The movable guardrail 5 plays a guiding role in the opening and closing process and can prevent the movable guardrail 5 from directly colliding to the side upright posts 121 on two sides when the movable guardrail 5 turns over.
Example 2
The utility model provides a from branch in removal type open guardrail, as shown in figure 5, including the symmetry locate two at 5 both ends of portable guardrail portal 1, when portable guardrail 5 is in the closed condition, from the branch in removal type open guardrail can be front and back symmetrical structure, also can be bilateral symmetry structure simultaneously.
The movable guardrail 5 is shown in fig. 6-7 and comprises a plurality of layers of longitudinal girders 53 arranged along the opening direction and a middle bracket 54 connected with the plurality of layers of longitudinal girders; the middle bracket 54 is taken as a symmetry axis; the longitudinal truss 53 or the bottom of part of the longitudinal truss 53 is symmetrically provided with at least two bilateral track wheels 51 as a group of pulley blocks, the number of the guide rails 3 corresponds to the number of the bilateral track wheels 51 in the group of the pulley blocks, so that the stability of the movable guardrail 5 during operation on the guide rails 3 is improved.
A moving method of the self-moving guardrail, as shown in fig. 8, includes the following steps:
s1, the self-moving type center-split opening guardrail is in a closed state, at the moment, the movable guardrail 5 completely closes the center-split opening, the scissor type lifting frame 61 is in a retraction state, and the limiting upright post 62 penetrates through the guide sleeve 1221 and the limiting sleeve 52 and is inserted into the limiting hole 21 of the base 2;
s2, before the movable guardrail 5 is opened, the scissor lift is lifted to be in an extended state, and at this time, the limit upright 62 is pulled out from the limit sleeve 52, but still located in the guide sleeve 1221;
s3, enabling the motor to rotate forward, enabling the movable guardrail 5 to move towards the side where the door frame is located, and after the movable guardrail is moved in place, closing the motor 42 and stopping the movable guardrail 5;
s4, enabling the passing vehicle to pass through the middle belt opening;
s5, the motor is reversed, the motor 42 is turned off after the movable guardrail 5 reversely moves to the right position, and the movable guardrail 5 stops moving;
s6, the scissor type lifting frame retracts, the limiting upright post 62 penetrates through the guide sleeve 1221 and the limiting sleeve 52 to be inserted into the limiting hole 21 of the base 2, and the self-moving type center-parting open guardrail returns to a closed state.
It should be noted that the above-described embodiments may enable those skilled in the art to more fully understand the present invention, but do not limit the present invention in any way. Therefore, although the present invention has been described in detail with reference to the drawings and examples, it will be understood by those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention.
Claims (10)
1. From portal of removal type guardrail, its characterized in that includes
End guide guardrails and guide frames; the guide frame comprises a plurality of side upright posts fixed on the base; one end of the end part guide guardrail is fixed on the side upright post, and the other end of the end part guide guardrail facing to the opening direction is contracted and extended to form a smooth transition outer inclined plane; the guide frame is divided into an upper layer space and a lower layer space by a middle frame which is arranged between the side upright posts in parallel with the base; the lower layer space is used for enabling the guardrail to pass through, the upper layer space is provided with a guardrail positioning device, and the guardrail positioning device penetrates through the middle frame to be movably clamped on the guardrail.
2. The mast of the self-moving guardrail of claim 1, wherein the guardrail positioning device comprises a scissor lift device comprising a scissor lift and a curb post suspended from a top of the scissor lift; a guide sleeve is arranged right above the middle frame deviating from the guide rail; when the scissor type lifting frame ascends and descends, the limiting upright posts move up and down through the guide sleeves.
3. The door frame of the self-moving guardrail as claimed in claim 2, wherein a lifting platform is arranged on the top of the scissor type lifting frame along the direction of the opening, and the two limiting upright posts are symmetrically arranged at two ends of the lifting platform.
4. The portal frame of the self-moving type guardrail according to claim 2 or 3, wherein the limit post is suspended from a bottom suspension loop of the lifting platform through a fisheye joint bearing, and the bottom surface of the limit post is an arc-shaped surface.
5. The mast of the self-moving guardrail of claim 2, wherein the scissor lift is fixed to the middle frame and comprises a scissor hydraulic lift.
6. The self-propelled guardrail portal of claim 2, wherein the base is provided with a limiting hole opposite to the guide sleeve.
7. The portal of the self-moving barrier of claim 1 or 2, wherein the base comprises a cement base.
8. The portal of the self-moving guardrail of claim 1 or 2, characterized in that the inner side of the side post is provided with guide wheels having axes parallel to the axis of the side post.
9. The door frame of the self-moving guardrail according to claim 1 or 2, wherein the guide frame comprises a plurality of side columns symmetrically arranged at two sides of the guide rail, a front bearing surface is formed between the side columns at the front side of the guide rail through a plurality of welded oblique columns, and a rear bearing surface is formed between the side columns at the rear side of the guide rail through a plurality of welded oblique columns.
10. The gantry of the self-moving type guardrail according to claim 1 or 2, further comprising a guardrail translation device, wherein the guardrail translation device comprises a rack and pinion transmission mechanism and a motor arranged on the guide frame, an output shaft of the motor is provided with a gear of the rack and pinion transmission mechanism, and a rack of the rack and pinion transmission mechanism is arranged on the guardrail; and a guide rail for moving the common guardrail is arranged on the lower-layer space base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210017592.2A CN114232535B (en) | 2022-01-07 | 2022-01-07 | Portal frame of self-moving guardrail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210017592.2A CN114232535B (en) | 2022-01-07 | 2022-01-07 | Portal frame of self-moving guardrail |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114232535A true CN114232535A (en) | 2022-03-25 |
| CN114232535B CN114232535B (en) | 2023-05-12 |
Family
ID=80746043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210017592.2A Active CN114232535B (en) | 2022-01-07 | 2022-01-07 | Portal frame of self-moving guardrail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114232535B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201024394Y (en) * | 2006-12-06 | 2008-02-20 | 白书锋 | Direction guiding crashproof movable guard bar |
| KR100837684B1 (en) * | 2007-01-29 | 2008-06-19 | (주)인테크 디자인 | Median strip comprised emergency u-turn area |
| JP2011174371A (en) * | 2011-04-28 | 2011-09-08 | Sazanami Concrete Industry Co Ltd | Installation structure of foundation block for guardrail |
| CN104376722A (en) * | 2014-11-28 | 2015-02-25 | 温岭市仁全机械设备有限公司 | Intelligent traffic control system with limiting sensor |
| CN204174560U (en) * | 2014-09-24 | 2015-02-25 | 北京中路安交通科技有限公司 | Universal anti-collision movable guardrail |
| CN204821271U (en) * | 2015-07-29 | 2015-12-02 | 山东理工大学 | Climb and go in work platform of highway central separator guardrail |
| CN210238378U (en) * | 2019-06-05 | 2020-04-03 | 黑龙江省应用电子有限责任公司 | Novel highway movable guardrail device |
| CN112127301A (en) * | 2020-08-12 | 2020-12-25 | 南京路伸交通科技有限公司 | Remote control movable guardrail |
-
2022
- 2022-01-07 CN CN202210017592.2A patent/CN114232535B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201024394Y (en) * | 2006-12-06 | 2008-02-20 | 白书锋 | Direction guiding crashproof movable guard bar |
| KR100837684B1 (en) * | 2007-01-29 | 2008-06-19 | (주)인테크 디자인 | Median strip comprised emergency u-turn area |
| JP2011174371A (en) * | 2011-04-28 | 2011-09-08 | Sazanami Concrete Industry Co Ltd | Installation structure of foundation block for guardrail |
| CN204174560U (en) * | 2014-09-24 | 2015-02-25 | 北京中路安交通科技有限公司 | Universal anti-collision movable guardrail |
| CN104376722A (en) * | 2014-11-28 | 2015-02-25 | 温岭市仁全机械设备有限公司 | Intelligent traffic control system with limiting sensor |
| CN204821271U (en) * | 2015-07-29 | 2015-12-02 | 山东理工大学 | Climb and go in work platform of highway central separator guardrail |
| CN210238378U (en) * | 2019-06-05 | 2020-04-03 | 黑龙江省应用电子有限责任公司 | Novel highway movable guardrail device |
| CN112127301A (en) * | 2020-08-12 | 2020-12-25 | 南京路伸交通科技有限公司 | Remote control movable guardrail |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114232535B (en) | 2023-05-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4039089A (en) | Radial vehicle parking apparatus with a plurality parking machines | |
| CN103726421B (en) | Height and span adjustable track paver for metro construction | |
| CN203412327U (en) | Rotary lift type stereo garage | |
| US5549176A (en) | Bridge construction machinery and method for constructing bridges | |
| CN104947982A (en) | Vertical shears-fork type yielding-free stereo garage | |
| CN217267121U (en) | From branch area opening guardrail in removal type | |
| CN212983597U (en) | Viaduct outer wall facility maintenance platform | |
| CN114232536B (en) | Automatic movable middle-belt split opening guardrail | |
| CN114232535A (en) | Portal of self-moving type guardrail | |
| CN111287498B (en) | Protective shed frame for construction of overhead bridge box girder crossing railway and erection method | |
| CN109853421B (en) | Anti-collision brake lever system of high-speed toll station | |
| CN114352144B (en) | Automatic movable middle-belt split opening guardrail control system and method | |
| CN210529559U (en) | Lifting height limiting frame | |
| CN218988728U (en) | Tunnel maintenance operation car group | |
| CN108928783B (en) | Shear type climbing hoisting machine for existing building additionally installed elevator | |
| CN106088736A (en) | One slides swing arm avoidance needless type stereoscopic garage and automobile goes out storage method | |
| CN108798714A (en) | A kind of working portable shifting formwork trolley of channel wall body and its construction method | |
| CN111455854B (en) | Semi-automatic protective shed frame used in construction of viaduct crossing railway and erection method | |
| CN211286860U (en) | Parking platform and parking lot using same | |
| CN208310801U (en) | A kind of working portable shifting formwork trolley of channel wall | |
| CN112593495A (en) | Construction equipment for concrete wall with sound barrier foundation and high and large thin plate structure | |
| CN110805335A (en) | Door type stereo garage | |
| CN206091471U (en) | Lifting device for intelligence sky parking equipment | |
| CN217972224U (en) | Hoisting steel wire rope swinging connection guiding device for reverse bridge dismantling of bridge girder erection machine | |
| CN220224787U (en) | Sideslip system for track equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |