CN109629819A - A kind of attachment type raise scaffold fall arrest guide bracket body - Google Patents
A kind of attachment type raise scaffold fall arrest guide bracket body Download PDFInfo
- Publication number
- CN109629819A CN109629819A CN201910092842.7A CN201910092842A CN109629819A CN 109629819 A CN109629819 A CN 109629819A CN 201910092842 A CN201910092842 A CN 201910092842A CN 109629819 A CN109629819 A CN 109629819A
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- China
- Prior art keywords
- guide bracket
- bracket body
- swing rod
- section
- frame body
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- 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.)
- Pending
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- 238000005452 bending Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G5/00—Component parts or accessories for scaffolds
- E04G5/001—Safety or protective measures against falling down relating to scaffoldings
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G5/00—Component parts or accessories for scaffolds
- E04G5/04—Means for fastening, supporting, or bracing scaffolds on or against building constructions
- E04G5/046—Means for fastening, supporting, or bracing scaffolds on or against building constructions for fastening scaffoldings on walls
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The present invention discloses a kind of attachment type raise scaffold fall arrest guide bracket body, it is adapted to mount between building masonry wall and scaffold frame body, the installed in front of guide bracket body has guide wheel assembly to cooperate for the fluctuating orbit of scaffold frame body, the trailing flank of guide bracket body has support plate for being mounted on building masonry wall, the lower section of guide bracket body is pivoted with swing rod by shaft, there is the sweptback baffle in upper end of limitation swing rod on rear side of the lower section of guide bracket body, the upper end of swing rod forms forward anti-fall insert, anti-fall insert can rotate with swing rod and be inserted into scaffold frame body and cooperate limitation frame body to fall with frame body cross bar, the lower end of swing rod opens up profile groove, touch block is pivoted with by shaft in profile groove, there is limitation to touch the bottom plate that block turns downwards for the bottom of guide bracket body, touch block is against on bottom plate under Gravitative Loads and accessible frame body cross bar.It is of the invention to lead that base structure is simple, and component is few, reliable operation low with installation cost is manufactured, it is highly-safe.
Description
Technical field
The present invention relates to the technical fields of attachment type raise scaffold, and it is related especially to lead base structure with fall arrest.
Background technique
Attachment type raise scaffold is the scaffold set up along building structure outer surface, is beginning of this century fast development
New type scaffold technology, high-rise working is become lower operation by it, and hanging operation is become frame body inside processing, is had significant
Low-carbon, high-tech content and it is more economical, safer, more convenient the features such as.The elevating function of raise scaffold, it is big generous
Construction and fitting-out work construction operation.Raise scaffold also has falling proof device, can ensure lift
Scaffold is in a safe condition always, effectively anti-fall, is the key that safe construction.In the prior art, falling proof device is various each
Sample, related patents also have very much, and still, generally existing component is more, the more complicated defect of structure, manufacture, installation cost compared with
The reliability and security of height, work is lower.
In view of this, the present inventor adhere to the relevant industries for many years it is it is abundant design and develop and actual fabrication experience, for
Existing missing specially devises a kind of fall arrest guide bracket body and its shores structure, thus this case generates.
Summary of the invention
The purpose of the present invention is to provide a kind of attachment type raise scaffold fall arrest guide bracket bodies, and structure is simple, installation
At low cost, reliable operation is highly-safe.
To achieve the goals above, solution of the invention is:
A kind of attachment type raise scaffold fall arrest guide bracket body, be adapted to mount to building masonry wall and scaffold frame body it
Between, the installed in front of guide bracket body has guide wheel assembly to cooperate for the fluctuating orbit of scaffold frame body, and the trailing flank of guide bracket body has branch
For fagging for being mounted on building masonry wall, the lower section of guide bracket body is pivoted with swing rod by shaft, has on rear side of the lower section of guide bracket body
Limit swing rod the sweptback baffle in upper end, the upper end of swing rod formed forward it is anti-fall insert, it is anti-fall insert can with swing rod rotate and insert
Enter in scaffold frame body cooperates limitation frame body to fall with frame body cross bar, and the lower end of swing rod opens up profile groove, passes through shaft pivot in profile groove
Equipped with block is touched, there is limitation to touch the bottom plate that block turns downwards for the bottom of guide bracket body, touches block and is against bottom plate under Gravitative Loads
Upper and accessible frame body cross bar.
The anti-fall slotting top is arc-shaped.
The bottom for touching block is arc-shaped.
The upper end of the swing rod also upwardly extends to form convex gear.
The swing rod is in bending, lower section with upper section tilted backwards in its natural state and straight down, anti-fall
The upper section that swing rod is formed in convex gear is inserted, profile groove is formed in the lower section of swing rod, touches the lower section that block is mounted on swing rod.
The top of the guide bracket body, which is also installed, shores, and shores including upper section, middle section and lower section, middle section is upper and lower ends tool
There is the sleeve of nut, and the nut of the upper and lower ends of middle section uses reverse thread, the bottom of upper section has lower thread segment and middle section
The cooperation of upper end nut so that section is assembled in the upper end of middle section, there is the lower end nut of upper thread segment and middle section to match at the top of lower section
The lower end for making lower section be assembled in middle section is closed, the top of upper section has top support slot, and the side of upper section has side support slot, lower section
Bottom is rotatably mounted to the top of guide bracket body by pivot.
For the upper section tool there are two side plate and a center-pole, two side plates are symmetrically fixed on the top two sides of center-pole,
It is additionally provided with locating rod between two side plates, a pair of of top support slot, the side pair of two side plates are correspondingly formed at the top of two side plates
A pair of of side support slot should be formed, there is lower thread segment on center-pole.
Fixed a pair of of the lug of the bottom symmetrical of the lower section, lug form axis hole, and a pair of of trunnion mount is formed on the top of guide bracket body,
Trunnion mount also forms axis hole, and pivot sequentially passes through the axis hole of trunnion mount and lug, and the bottom of lower section is made to be mounted on the top of guide bracket body.
After adopting the above scheme, of the invention to lead that base structure is simple, and component is few, it manufactures low with installation cost.
Guide bracket body of the invention applies to attachment type raise scaffold, and frame body rises operating condition, touches block by the frame body of lower section
Cross bar pushes up, and is flipped up touch block, touches block and steps down to frame body cross bar, frame body can smoothly rise；Frame body is with normal
Speed declines operating condition, touches block and is pushed down on by the frame body cross bar of top, touches block and is limited by bottom plate by the thrust biography of frame body cross bar
Pass swing rod, make swing rod lower end and touch block turn round together, touch block give frame body cross bar step down, frame body can smoothly under
Drop；The anti-fall decline operating condition of frame body, touch block is impacted rapidly by the frame body cross bar of top to be pushed down on, and is touched block and is limited by bottom plate by frame
The impact thrust of body cross bar passes to swing rod, and the lower end of swing rod and touch block is made to turn round rapidly together, and the upper end of swing rod is same
When move forward rapidly, cause anti-fall insert to be rapidly inserted into frame body, it is anti-fall it is slotting stop the frame body cross bar that falls, reaching prevents frame body
The effect of falling.Reliable operation of the present invention, it is highly-safe.
Present invention will be further explained below with reference to the attached drawings and examples.
Detailed description of the invention
Fig. 1 is the stereogram exploded view of guide bracket body of the present invention；
Fig. 2 is the stereoscopic schematic diagram one of guide bracket body of the present invention；
Fig. 3 is the stereoscopic schematic diagram two of guide bracket body of the present invention；
Fig. 4 is the stereogram exploded view that the present invention shores；
Fig. 5 is the stereoscopic schematic diagram that the present invention shores；
Fig. 6-8 is the action schematic diagram that the present invention rises operating condition；
Fig. 9-11 is the action schematic diagram of present invention decline operating condition；
Figure 12-14 is the action schematic diagram of the anti-fall operating condition of the present invention.
Label declaration
Guide bracket body 10, guide wheel assembly 11, support plate 12, swing rod 13, shaft 131, convex gear 132, anti-fall to insert 133, profile groove
134, bottom plate 135 touches block 14, shaft 141, baffle 15, trunnion mount 16, axis hole 161；
Shore 20, upper section 21, lower thread segment 211, top support slot 212, side support slot 213, side plate 214, center-pole 215,
Locating rod 216, middle section 22, nut 221 and 222, lower section 23, upper thread segment 231, lug 232, axis hole 233；
Wall 30；
Frame body 40, frame body cross bar 41.
Specific embodiment
As shown in figs. 1 to 14, present invention discloses a kind of attachment type raise scaffold fall arrest guide bracket bodies 10, are suitable for peace
Between building masonry wall 30 and scaffold frame body 40.The installed in front of guide bracket body 10 has guide wheel assembly 11, guide wheel assembly 11
Cooperate with the fluctuating orbit of scaffold frame body 40, scaffold frame body 40 is made to can move up and down realization lifting.After guide bracket body 10
Side has support plate 12, and support plate 12 is for being mounted on building masonry wall 30.The lower section of guide bracket body 10 is pivoted by shaft 131
There is swing rod 13, there is the sweptback baffle 15 in upper end of limitation swing rod 13, the upper end of swing rod 13 on rear side of the lower section of guide bracket body 10
Formed forward it is anti-fall insert 133, it is anti-fall insert 133 can with swing rod 13 rotate and be inserted into scaffold frame body 40, by it is anti-fall insert 133 with
The cooperation limitation frame body 40 of frame body cross bar 41 falls, and the lower end of swing rod 13 opens up profile groove 134, is pivoted in profile groove 134 by shaft 141
Have and touch block 14, there is limitation to touch the bottom plate 135 that block 14 turns downwards for the bottom of guide bracket body 10, touch block 14 under Gravitative Loads
It is against on bottom plate 135 and accessible frame body cross bar 41.
In order to guarantee the fluency of raising and lowering operation, anti-fall slotting 133 top of the present invention is arc-shaped, touches block 14
Bottom is arc-shaped.
Further, the present invention also upwardly extends to form convex gear 132 in the upper end of swing rod 13, in its natural state, convex gear 132
It is against on baffle 15 backward.
The optimization design of swing rod 13 of the present invention is in bending, with upper section tilted backwards in its natural state and vertically
Downward lower section, anti-fall to insert 133 and convex gear 132 upper sections that are formed in swing rod 13, profile groove 134 is formed in the lower section of swing rod 13, touches
Motion block 14 is mounted on the lower section of swing rod 13.
10 structure of guide bracket body of the invention is simple, and component is few, and manufacture is low with installation cost, applies to adhesion type self-lifting scaffold
In frame, the specific working principle is as follows is stated.
Rise operating condition as shown in figs 6-8 for frame body 40.Original state is shown in Fig. 6, and the convex gear 132 in the upper end of swing rod 13 is backward
It is against on baffle 15, touch block 14 is against on bottom plate 135 under Gravitative Loads and accessible frame body cross bar 41.When frame body 40 rises
When, it is pushed up as shown in fig. 7, touching block 14 by the frame body cross bar 41 of lower section, is flipped up touch block 14, touch block 14 to frame
Body cross bar 41 is stepped down, and frame body 40 can smoothly rise, as shown in Figure 8.
Operating condition is declined with normal speed for frame body 40 as shown in figs. 9-11.Original state is the upper end of swing rod 13 shown in Fig. 9
Convex gear 132 is against backward on baffle 15, and touch block 14 is against on bottom plate 135 under Gravitative Loads and accessible frame body cross bar 41.
When frame body 40 is declined with normal speed, as shown in Figure 10, touches block 14 and pushed down on by the frame body cross bar 41 of top, touch block 14
It is limited by bottom plate 135, the thrust of frame body cross bar 41 is passed into swing rod 13, make the lower end of swing rod 13 and touch block 14 together backward
Turn, touches block 14 and step down to frame body cross bar 41, frame body 40 can smoothly decline, as shown in figure 11.
It is as shown in figs. 12-14 the anti-fall decline operating condition of frame body 40.Original state is the convex gear in the upper end of swing rod 13 shown in Figure 12
132 are against backward on baffle 15, and touch block 14 is against on bottom plate 135 under Gravitative Loads and accessible frame body cross bar 41.Work as frame
When body 40 is declined with the extraordinary speed fallen, as shown in figure 13, touching block 14, impact is downward rapidly by the frame body cross bar 41 of top
Push away, touch block 14 by bottom plate 135 limit, the impact thrust of frame body cross bar 41 is passed into swing rod 13, make swing rod 13 lower end and
Block 14 is touched to turn round rapidly together, and the upper end of swing rod 13 moves forward rapidly simultaneously, causes anti-fall slotting 133 to be rapidly inserted into frame body
In 40, anti-fall slotting 133, which stop the frame body cross bar 41 fallen, reaches the effect of preventing frame body 40 from falling as shown in figure 14.This hair
Bright reliable operation, it is highly-safe.
For preferably supporting frame 40, the attachment point of scaffold frame body 40 is provided, the overall security of hoisting scaffold,
The present invention also installs at the top of guide bracket body 10 shores 20.Shoring 20 includes upper section 21, middle section 22 and lower section 23.Middle section 22 is
Upper and lower ends have the sleeve of nut 221 and 222, and the nut 221 and 222 of the upper and lower ends of middle section 22 uses reverse thread.
There is lower thread segment 211 and the cooperation of upper end nut 221 of middle section 22 upper section 21 to be made to be assembled in the upper of middle section 22 for the bottom of upper section 21
End.There is upper thread segment 231 and the cooperation of lower end nut 222 of middle section 22 lower section 23 to be made to be assembled in middle section 22 at the top of lower section 23
Lower end.The top of upper section 21 has top support slot 212, and the side of upper section 21 has side support slot 213, top support slot 212 and side
Support slot 213 provides 40 two different height attachment points of scaffold frame body and selects for frame body 40.The bottom of lower section 23 passes through pivot
It is rotatably mounted to the top of guide bracket body 10, selects different holding states and non-supported state to facilitate.
The present invention increases middle section 22 because middle section 22 has the tube-in-tube structure of nut 221 and 222 using upper and lower ends
The nut 221 and 222 at diameter, especially both ends further increases diameter, greatly increases so that shoring 20 bending resistance,
Really it ensure that support effect.The present invention passes through rotation because the nut 221 and 222 of middle 22 upper and lower ends of section uses reverse thread
Section 22, which can achieve, in turning quickly adjusts the effect for shoring 20.
In order to simplify structure, and reach better support effect, there are two side plate 214 and one for the tool of upper section 21 of the invention
Center-pole 215, two side plates 214 are symmetrically fixed on the top two sides of center-pole 215, are additionally provided with positioning between two side plates 214
Bar 216, the top of two side plates 214 are correspondingly formed a pair of of top support slot 212, and the side of two side plates 214 is correspondingly formed a pair
Side support slot 213 has lower thread segment 211 on center-pole 215.Fixed a pair of of the lug 232 of the bottom symmetrical of section 23 under the present invention,
Lug 232 forms axis hole 233, and a pair of of trunnion mount 16 is formed on the top of guide bracket body 10, and trunnion mount 16 also forms axis hole 161, and pivot is successively
Across the axis hole 161 of trunnion mount 16 and the axis hole 233 of lug 232, the bottom of lower section 23 is made to be mounted on the top of guide bracket body 10.
Example the above is only the implementation of the present invention, not limitation of the present invention.It should be pointed out that the technology of this field
Personnel can according to need the modification for making not creative contribution after reading this specification, but as long as in power of the invention
All by the protection of Patent Law in sharp claimed range.
Claims (8)
1. a kind of attachment type raise scaffold fall arrest guide bracket body, is adapted to mount between building masonry wall and scaffold frame body,
It is characterized by: the installed in front of guide bracket body has guide wheel assembly to cooperate for the fluctuating orbit of scaffold frame body, the rear side of guide bracket body
Face has support plate for being mounted on building masonry wall, and the lower section of guide bracket body is pivoted with swing rod, the lower section of guide bracket body by shaft
Rear side have limitation swing rod the sweptback baffle in upper end, the upper end of swing rod formed forward it is anti-fall insert, it is anti-fall insert can be with swing rod
It rotates and is inserted into scaffold frame body and cooperates limitation frame body to fall with frame body cross bar, the lower end of swing rod opens up profile groove, leads in profile groove
It crosses shaft and is pivoted with touch block, there is limitation to touch the bottom plate that block turns downwards for the bottom of guide bracket body, touch block under Gravitative Loads
It is against on bottom plate and accessible frame body cross bar.
2. a kind of attachment type raise scaffold fall arrest guide bracket body as described in claim 1, it is characterised in that: described anti-fall slotting
Top it is arc-shaped.
3. a kind of attachment type raise scaffold fall arrest guide bracket body as described in claim 1, it is characterised in that: the touch block
Bottom it is arc-shaped.
4. a kind of attachment type raise scaffold fall arrest guide bracket body as described in claim 1, it is characterised in that: the swing rod
Upper end also upwardly extends to form convex gear.
5. a kind of attachment type raise scaffold fall arrest guide bracket body as described in claim 1, it is characterised in that: the swing rod is in
Bending, lower section with upper section tilted backwards in its natural state and straight down, anti-fall insert are formed in swing rod with convex gear
Upper section, profile groove is formed in the lower section of swing rod, touches the lower section that block is mounted on swing rod.
6. a kind of attachment type raise scaffold fall arrest guide bracket body as described in claim 1, it is characterised in that: the guide bracket body
Top also install and shore, shore including upper section, middle section and lower section, middle section is the sleeve that upper and lower ends have nut, and in
The nut of the upper and lower ends of section uses reverse thread, and there is the cooperation of the upper end nut of lower thread segment and middle section to make for the bottom of upper section
Section is assembled in the upper end of middle section, and there is the cooperation of the lower end nut of upper thread segment and middle section lower section to be made to be assembled in middle section at the top of lower section
Lower end, the top of upper section has top support slot, and the side of upper section has side support slot, and the bottom of lower section is by pivot can turn
Dynamic mode is mounted on the top of guide bracket body.
7. a kind of attachment type raise scaffold fall arrest guide bracket body as claimed in claim 6, it is characterised in that: the upper section tool
There are two side plate and a center-pole, two side plates are symmetrically fixed on the top two sides of center-pole, are additionally provided between two side plates
Locating rod is correspondingly formed a pair of of top support slot at the top of two side plates, and the side of two side plates is correspondingly formed a pair of of side support slot,
There is lower thread segment on center-pole.
8. a kind of attachment type raise scaffold fall arrest guide bracket body as claimed in claim 6, it is characterised in that: the lower section
Fixed a pair of of the lug of bottom symmetrical, lug form axis hole, and a pair of of trunnion mount is formed on the top of guide bracket body, and trunnion mount also forms axis hole, pivot
Axis sequentially passes through the axis hole of trunnion mount and lug, and the bottom of lower section is made to be mounted on the top of guide bracket body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910092842.7A CN109629819A (en) | 2019-01-30 | 2019-01-30 | A kind of attachment type raise scaffold fall arrest guide bracket body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910092842.7A CN109629819A (en) | 2019-01-30 | 2019-01-30 | A kind of attachment type raise scaffold fall arrest guide bracket body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109629819A true CN109629819A (en) | 2019-04-16 |
Family
ID=66064309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910092842.7A Pending CN109629819A (en) | 2019-01-30 | 2019-01-30 | A kind of attachment type raise scaffold fall arrest guide bracket body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109629819A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111424954A (en) * | 2020-04-08 | 2020-07-17 | 北京千引力科技发展有限公司 | Attached lifting scaffold, wall-attached guide seat thereof and use method |
| CN112727058A (en) * | 2020-12-29 | 2021-04-30 | 广州达蒙安防科技有限公司 | Guide rail clamp anti-falling device |
| CN114165042A (en) * | 2021-12-09 | 2022-03-11 | 华西工程科技(深圳)股份有限公司 | Swing link type anti-falling device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5351784A (en) * | 1994-03-24 | 1994-10-04 | Sung Te Fu | Protective device for a scaffold |
| CN103422664A (en) * | 2013-09-02 | 2013-12-04 | 河南天立建筑工程技术有限公司 | Attached lifting scaffold |
| CN105401715A (en) * | 2015-12-21 | 2016-03-16 | 中亿丰建设集团股份有限公司 | Overturn-preventing falling-preventing attached lifting scaffold |
| CN207260553U (en) * | 2017-09-06 | 2018-04-20 | 北京众合通达建设工程有限公司 | A kind of attachment type raise scaffold anti-fall device |
| CN209585588U (en) * | 2019-01-30 | 2019-11-05 | 厦门安科科技有限公司 | A kind of attachment type raise scaffold fall arrest guide bracket body |
-
2019
- 2019-01-30 CN CN201910092842.7A patent/CN109629819A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5351784A (en) * | 1994-03-24 | 1994-10-04 | Sung Te Fu | Protective device for a scaffold |
| CN103422664A (en) * | 2013-09-02 | 2013-12-04 | 河南天立建筑工程技术有限公司 | Attached lifting scaffold |
| CN105401715A (en) * | 2015-12-21 | 2016-03-16 | 中亿丰建设集团股份有限公司 | Overturn-preventing falling-preventing attached lifting scaffold |
| CN207260553U (en) * | 2017-09-06 | 2018-04-20 | 北京众合通达建设工程有限公司 | A kind of attachment type raise scaffold anti-fall device |
| CN209585588U (en) * | 2019-01-30 | 2019-11-05 | 厦门安科科技有限公司 | A kind of attachment type raise scaffold fall arrest guide bracket body |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111424954A (en) * | 2020-04-08 | 2020-07-17 | 北京千引力科技发展有限公司 | Attached lifting scaffold, wall-attached guide seat thereof and use method |
| CN112727058A (en) * | 2020-12-29 | 2021-04-30 | 广州达蒙安防科技有限公司 | Guide rail clamp anti-falling device |
| CN112727058B (en) * | 2020-12-29 | 2021-09-07 | 广州达蒙安防科技有限公司 | Guide rail clamp anti-falling device |
| CN114165042A (en) * | 2021-12-09 | 2022-03-11 | 华西工程科技(深圳)股份有限公司 | Swing link type anti-falling device |
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