CN114875797B - Upper-bearing type pier high-altitude construction anti-falling device capable of automatically lifting - Google Patents
Upper-bearing type pier high-altitude construction anti-falling device capable of automatically lifting Download PDFInfo
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- CN114875797B CN114875797B CN202210617291.3A CN202210617291A CN114875797B CN 114875797 B CN114875797 B CN 114875797B CN 202210617291 A CN202210617291 A CN 202210617291A CN 114875797 B CN114875797 B CN 114875797B
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- brake rod
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- 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
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/32—Safety or protective measures for persons during the construction of buildings
- E04G21/3204—Safety or protective measures for persons during the construction of buildings against falling down
- E04G21/3247—Storey high safety barrier hung from the facade and sliding up from level to level as work progresses
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- 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
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/32—Safety or protective measures for persons during the construction of buildings
- E04G21/3261—Safety-nets; Safety mattresses; Arrangements on buildings for connecting safety-lines
- E04G21/3266—Safety nets
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Emergency Lowering Means (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to the technical field of pier safety devices, and provides an upper-bearing type automatic lifting pier high-altitude construction anti-falling device which comprises an anti-falling mechanism, a driving mechanism and a locking mechanism, and is characterized in that the anti-falling mechanism comprises a support ring sleeved on a pier and an anti-falling net arranged on the support ring; the driving mechanism comprises a plurality of driving wheels rotatably arranged on the supporting ring, and the driving wheels are attached to the side wall of the pier; the locking mechanism comprises a brake rod and a first spring, wherein the brake rod is hinged on the supporting ring, the end part of the brake rod is in butt joint or separation from the butt pier, the free end of the brake rod is obliquely downward, the two ends of the first spring are respectively arranged on the brake rod and the supporting ring, and the first spring provides force for the brake rod to approach the pier. Through above-mentioned technical scheme, the problem of installation anti-falling net time and effort on the pier among the prior art has been solved.
Description
Technical Field
The invention relates to the technical field of pier safety devices, in particular to an upper-bearing type pier high-altitude construction anti-falling device capable of automatically lifting.
Background
The operation at a height above (including 2 m) the height reference plane is called as a high-level operation. The operation at high place has great potential safety hazard, and various safety measures such as safety helmets, safety ropes, safety guardrails, safety ladders, anti-falling devices and the like are generally adopted. Wherein the anti-falling device is the last line of defense for high-altitude safety measures.
In bridge pier construction, because pier operation face height constantly rises, and pier column surface generally does not have the attachment, prevent weighing down the net and can't set up, be difficult to along with the change of pier construction operation face position and change, when allowing the installation protection network, need manual installation, waste time and energy.
Disclosure of Invention
The invention provides an overhead construction anti-falling device for an overhead pier, which can automatically lift and fall, and solves the problem that the installation of a protection network for the pier in the related art is time-consuming and labor-consuming.
The technical scheme of the invention is as follows: the upper-bearing type automatic lifting pier high-altitude construction anti-falling device comprises an anti-falling mechanism, a driving mechanism and a locking mechanism, and is characterized in that the anti-falling mechanism comprises a support ring sleeved on the pier and an anti-falling net arranged on the support ring; the driving mechanism comprises a plurality of driving wheels rotatably arranged on the supporting ring, and the driving wheels are attached to the side wall of the pier; the locking mechanism comprises a brake rod and a first spring, wherein the brake rod is hinged to the supporting ring, the end part of the brake rod is abutted to or separated from the abutment pier, the free end of the brake rod is inclined downwards, the two ends of the first spring are respectively arranged on the brake rod and the supporting ring, and the first spring provides force of the brake rod, which is close to the abutment pier.
As a further technical scheme, the method comprises the steps of,
the locking mechanism further comprises a ring gear, a rotating shaft, braking teeth and a limiting block, wherein the ring gear is rotatably arranged on the supporting ring, the rotating shaft is rotatably arranged on the supporting ring and positioned in the ring gear, the braking rod is arranged on the rotating shaft, the side wall of the rotating shaft is provided with a groove, the braking teeth are radially arranged in the groove in a sliding mode along the rotating shaft, the upper end face of the braking teeth is an arc face, a second spring is arranged between the braking teeth and the groove, gear teeth are arranged on the outer wall of the ring gear, gears are coaxially arranged on the driving wheel, ratchet teeth are arranged on the inner ring of the ring gear, the braking teeth are poked after the ratchet teeth rotate, gaps are formed between the ratchet teeth and the side wall of the rotating shaft, and the limiting block is arranged on the supporting ring and positioned in the gaps.
As a further technical scheme, the method comprises the steps of,
the driving mechanism further comprises a hydraulic cylinder, the hydraulic cylinder is arranged on the supporting ring, and the telescopic end of the hydraulic cylinder is connected with the driving wheel mandrel.
As a further technical scheme, the method comprises the steps of,
the supporting ring is uniformly provided with a plurality of overhanging pieces, each overhanging piece is arc-shaped, the end part of each overhanging piece is tilted upwards, the end parts of a plurality of overhanging pieces are connected by virtue of a pull rope, and the anti-falling net is fixed on the pull rope by virtue of a reinforcing rope.
As a further technical scheme, the method comprises the steps of,
the pull rope is connected with the end part of the cantilever part by means of a buckle.
As a further technical scheme, the method comprises the steps of,
the anti-falling net is lower than the end far away from the bridge pier at the end near the bridge pier.
As a further technical scheme, the method comprises the steps of,
still include positioning mechanism, positioning mechanism includes location wheel pipe box and telescopic link and third spring, the telescopic link slides and sets up in the pipe box, the telescopic link tip rotates and is equipped with the location wheel, the location wheel with pier lateral wall butt, the third spring provides the telescopic link is close to the power of pier, the pipe box sets up on the backup pad.
The working principle and the beneficial effects of the invention are as follows:
according to the invention, the supporting rings are formed by connecting supporting rods, the end parts of the adjacent supporting rods are connected by virtue of flange plates, the adjacent supporting rods are connected by virtue of reinforcing steel bars, threads are formed at the two ends of the reinforcing steel bars, through holes are formed in the supporting rods, after the reinforcing steel bars pass through the through holes of the adjacent two supporting rods, nuts are screwed at the two ends of the reinforcing steel bars again to fasten the corner positions of the supporting rings, so that the integral rigidity of the supporting rods is increased, the structural deformation is reduced, the integral shape of the supporting rings is the same as the outline of the outer surface of a pier, the size is slightly larger than the outline of a pier, a protective net is arranged on the supporting rings, driving wheels are rotated on the supporting rings, a control electric box is arranged on the ground, the control electric box supplies power to a servo motor through electric wires and controls the working state of the servo motor, and the servo motor drives the driving wheels to move upwards or downwards; in bridge pier column construction, as the height of the pier operation surface is continuously increased, the surface of the pier column is generally free of attachments, and the anti-falling net cannot be arranged, so that the bridge pier column is more difficult to change along with the change of the position of the pier operation surface, and the driving wheel drives the supporting ring to move on the bridge pier, the problem that the position of the working surface on the bridge pier is too high and the anti-falling net cannot be arranged is solved, and the automatic installation mode saves a great amount of time, so that time and labor are saved when the anti-falling net is installed; after the drive wheel reaches a certain height, in order to avoid falling net landing, add locking mechanical system on the back-up ring, locking mechanical system comprises brake lever, pivot and first spring, the pivot can rotate on the back-up ring, the axis of rotation tip is equipped with the brake lever, the slope of brake lever free end is downwards, be connected with first spring between brake lever and the back-up ring, first spring can provide the force that the brake lever is close to the pier, after the back-up ring reaches the assigned position, the drive wheel stop work, the brake lever tip can jack up the pier, prevent that the back-up ring from sliding down rapidly, the security of this equipment has been improved.
Drawings
The invention will be described in further detail with reference to the drawings and the detailed description.
FIG. 1 is a schematic view of a fall arrest device according to the present invention;
FIG. 2 is a schematic view of a locking mechanism according to the present invention;
FIG. 3 is a schematic view of a positioning mechanism according to the present invention;
FIG. 4 is a schematic view of the first spring engaging a brake lever of the present invention;
FIG. 5 is a schematic view of the engagement of the brake teeth with the grooves of the present invention;
FIG. 6 is a top view of the support ring of the present invention;
in the figure: 1. the hydraulic support comprises a support ring, 2, a telescopic rod, 3, a driving wheel, 4, a gear, 5, a brake rod, 6, a rotating shaft, 7, a first spring, 8, a ring gear, 9, a brake tooth, 10, a limiting block, 11, a second spring, 12, a third spring, 13, a hydraulic cylinder, 14, a cantilever part, 15, a pull rope, 16, a positioning wheel, 17, a pipe sleeve, 18, a bridge pier, 19, an anti-falling net, 20 and a groove.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1 to 6, the embodiment provides an upper-bearing type automatic lifting anti-falling device for high-altitude construction of a pier, which comprises an anti-falling mechanism, a driving mechanism and a locking mechanism, and is characterized in that the anti-falling mechanism comprises a support ring 1 sleeved on a pier 18 and an anti-falling net 19 arranged on the support ring 1; the driving mechanism comprises a plurality of driving wheels 3 rotatably arranged on the supporting ring 1, and the driving wheels 3 are attached to the side wall of the bridge pier 18; the locking mechanism comprises a brake rod 5 and a first spring 7, wherein the brake rod 5 is hinged to the support ring 1, the end part of the brake rod is in butt joint or separated from a butt pier 18, the free end of the brake rod 5 is inclined downwards, two ends of the first spring 7 are respectively arranged on the brake rod 5 and the support ring 1, and the first spring 7 provides force for the brake rod 5 to be close to the butt pier 18.
According to the invention, the supporting rings 1 are formed by connecting supporting rods, the end parts of the adjacent supporting rods are connected by virtue of flange plates, the adjacent supporting rods are connected by virtue of reinforcing steel bars, threads are formed at the two ends of the reinforcing steel bars, through holes are formed in the supporting rods, after the reinforcing steel bars pass through the through holes of the adjacent two supporting rods, nuts are screwed at the two ends of the reinforcing steel bars, the corner positions of the supporting rings 1 are fastened, the integral rigidity of the supporting rods is increased, the structural deformation is reduced, the integral shape of the supporting rings 1 is the same as the outline of the outer surface of a pier 18, the size is slightly larger than the outline of the pier 18, a protective net is arranged on the supporting rings 1, driving wheels 3 are rotated on the supporting rings 1, a control electric box is arranged on the ground, the control electric box supplies power for a servo motor through electric wires, the working state of the servo motor is controlled, and the servo motor drives the driving wheels 3 to move upwards or downwards; in bridge pier column construction, as the height of the working surface of the pier 18 is continuously increased, the surface of the pier column is generally free of attachments, the anti-falling net 19 cannot be arranged, and the change along with the change of the position of the working surface of the pier 18 is more difficult, the driving wheel 3 drives the supporting ring 1 to move on the pier 18, the problem that the position of the working surface on the pier 18 is too high and the anti-falling net 19 cannot be arranged is solved, and the automatic installation mode saves a great amount of time, so that time and labor are saved when the anti-falling net 19 is installed; after the driving wheel 3 reaches a certain height, in order to avoid the falling net 19 from sliding off, a locking mechanism is additionally arranged on the supporting ring 1, the locking mechanism consists of a brake rod 5, a rotating shaft 6 and a first spring 7, the rotating shaft 6 can rotate on the supporting ring 1, the end part of the rotating shaft is provided with the brake rod 5, the free end of the brake rod 5 is inclined downwards, the first spring 7 is connected between the brake rod 5 and the supporting ring 1, the first spring 7 can provide the force of the brake rod 5, which is close to the pier 18, when the supporting ring 1 reaches a designated position, the driving wheel 3 stops working, the end part of the brake rod 5 can prop against the pier 18, the rapid downward sliding of the supporting ring 1 is prevented, and the safety of the device is improved.
Further, the method also comprises the steps of,
the locking mechanism further comprises a ring gear 8, a rotating shaft 6, braking teeth 9 and a limiting block 10, wherein the ring gear 8 is rotatably arranged on the supporting ring 1, the rotating shaft 6 is rotatably arranged on the supporting ring 1 and located in the ring gear 8, the braking rod 5 is arranged on the rotating shaft 6, a groove 20 is formed in the side wall of the rotating shaft 6, the braking teeth 9 are radially and slidably arranged in the groove 20 along the rotating shaft 6, the upper end face of the braking teeth 9 is an arc face, a second spring 11 is arranged between the braking teeth 9 and the groove 20, gear teeth are arranged on the outer wall of the ring gear 8, a gear 4 is coaxially arranged on the driving wheel 3, ratchet teeth are arranged on the inner ring of the ring gear 8, the braking teeth 9 are stirred after the ratchet teeth rotate, a gap is formed between the ratchet teeth and the side wall of the rotating shaft 6, and the limiting block 10 is arranged on the supporting ring 1, and the limiting block 10 is located in the gap.
In the embodiment, a ring gear 8 is rotatably arranged on a supporting ring 1, the ring gear 8 and a rotating shaft 6 are coaxial, the ring gear 8 is sleeved on the rotating shaft 6, gear teeth are arranged on the outer side wall of the ring gear 8, a gear 4 is connected with the ring gear 8 and the gear 4, ratchet teeth are arranged on the inner side wall of the ring gear 8, a gap is arranged between the end part of each ratchet tooth and the rotating shaft 6, a braking tooth 9 slides in a groove 20 on the side wall of the rotating shaft 6, two ends of a second spring 11 are respectively connected with the bottom of the braking tooth 9 and the bottom wall of the groove 20, the second spring 11 pushes the braking tooth 9 to slide outwards of the groove 20, a limiting block 10 is further arranged on the supporting ring 1, and the limiting block 10 is positioned in the gap between the end part of each ratchet tooth and the rotating shaft 6 and is not contacted with the rotating shaft 6 and the ratchet teeth;
when the driving wheel 3 moves upwards, the gear 4 on the rotating shaft 6 drives the ring gear 8 to rotate by means of a chain, at the moment, the arc edge on the ratchet teeth is attached to the arc surface on the braking teeth 9, so that the braking teeth 9 are pushed to slide into the grooves 20, at the moment, the rotating shaft 6 is not driven to rotate, and the locking mechanism is in a working state; when the driving wheel 3 moves downwards, the ring gear 8 is driven to rotate reversely, at the moment, the ratchet teeth stir the braking teeth 9 and drive the rotating shaft 6 to rotate, and finally the braking rod 5 is driven to be far away from the bridge pier 18, and the locking mechanism is invalid, because the braking rod 5 cannot always rotate along with the ring gear 8, when the braking rod 5 rotates to a certain angle, the braking teeth 9 can be contacted with the limiting block 10, and the limiting block 10 can squeeze the braking teeth 9 into the grooves 20 along the cambered surfaces of the braking teeth 9, so that the braking teeth 9 are not contacted with the ratchet teeth, and the locking mechanism is circulated and reciprocated; the design realizes the automation of the ascending and descending of the support ring 1, facilitates the disassembly of the installation of the anti-falling net 19, and greatly reduces the time for installing and disassembling the anti-falling net 19; when the supporting ring 1 descends, the driving mechanism is damaged, the friction force between the driving wheel 3 and the pier column disappears, the deceleration effect of the driving wheel 3 disappears, the descending speed of the supporting ring 1 is not controlled, and the driving wheel 3 can not provide driving force for the ring gear 8 at this time, so that the brake rod 5 can move towards the pier 18 under the action of the second spring 11, the locking device is started, the system can be safely fixed on the pier 18, and safety accidents are prevented.
Further, the method also comprises the steps of,
the driving mechanism further comprises a hydraulic cylinder 13, the hydraulic cylinder 13 is arranged on the supporting ring 1, and the telescopic end of the hydraulic cylinder 13 is connected with the spindle of the driving wheel 3.
In the embodiment, the hydraulic cylinder 13 can tightly press the driving wheel 3 against the pier 18, so that the friction between the driving wheel 3 and the pier 18 is increased, and the driving wheel 3 can conveniently move upwards; the support ring 1 can be prevented from falling too fast by playing a role in decelerating when falling, so that the support ring 1 is damaged.
Further, the method also comprises the steps of,
the support ring 1 is uniformly provided with a plurality of overhanging pieces 14, each overhanging piece 14 is arc-shaped, the end part of each overhanging piece is tilted upwards, the end parts of a plurality of overhanging pieces 14 are connected by virtue of a pull rope 15, and the anti-falling net 19 is fixed on the pull rope 15 by virtue of a reinforcement rope.
In the embodiment, the overhanging elements 14 are uniformly arranged on the outer side of the support ring 1, the overhanging elements 14 are arc-shaped, the end parts of the overhanging elements 14 are tilted upwards, the overhanging elements 14 form a bowl-shaped structure on the outer side of the support ring 1, the end parts of the overhanging elements 14 are connected by virtue of the pull ropes 15, and the anti-falling net 19 is fixed on the pull ropes 15 by virtue of the reinforcement ropes; the overhanging piece 14 is of an I-shaped steel structure, the pull rope 15 is of a bowl-shaped structure surrounded by the overhanging piece 14, and the bowl-shaped structure can better accommodate people falling onto the protective net and prevent the people from falling from the edge carelessly.
Further, the method also comprises the steps of,
the pull cord 15 is connected to the end of the cantilever 14 by means of a snap.
In this embodiment, the stay cord 15 is connected with the overhanging element 14 through a buckle, so that the stay cord 15 can be conveniently and rapidly installed or detached, and the working efficiency is improved.
Further, the method also comprises the steps of,
the anti-falling net 19 is lower than the end far away from the bridge pier 18 at the end near the bridge pier 18.
In this embodiment, after the anti-falling net 19 is installed, a funnel-shaped structure with the free edge close to the bridge pier 18 being lower than the free edge far away from the bridge pier 18 is formed, so that falling personnel can be prevented from being popped outwards, and the safety of equipment is improved.
Further, the method also comprises the steps of,
the positioning mechanism comprises a positioning wheel 16 pipe sleeve 17, a telescopic rod 2 and a third spring 12, wherein the telescopic rod 2 is arranged in the pipe sleeve 17 in a sliding mode, two ends of the third spring 12 are respectively connected with the telescopic rod 2 and the bottom wall of the pipe sleeve 17, the end portion of the telescopic rod 2 is rotatably provided with the positioning wheel 16, the positioning wheel 16 is in butt joint with the side wall of the pier 18, the third spring 12 provides force of the telescopic rod 2, which is close to the pier 18, and the pipe sleeve 17 is arranged on the support ring 1.
In this embodiment, the third spring 12 provides the force of the telescopic rod 2 approaching the bridge pier 18, and further provides the force of the positioning wheel 16 approaching the bridge pier 18, so that the positioning wheel 16 clings to the side wall of the bridge pier 18, and the positioning mechanism can make the support ring 1 shake in a small extent within a certain range, so that the system can be prevented from generating excessive shake under the action of wind load, and the stability of the support ring 1 is improved.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (7)
1. The upper-bearing type automatic lifting pier high-altitude construction anti-falling device comprises an anti-falling mechanism, a driving mechanism and a locking mechanism, and is characterized in that the anti-falling mechanism comprises a support ring (1) sleeved on a pier (18) and an anti-falling net (19) arranged on the support ring (1); the driving mechanism comprises a plurality of driving wheels (3) rotatably arranged on the supporting ring (1), and the driving wheels (3) are attached to the side wall of the pier (18); the locking mechanism comprises a brake rod (5) and a first spring (7), wherein the brake rod (5) is hinged to the support ring (1) and the end part of the brake rod is abutted or separated from an abutment pier (18), the free end of the brake rod (5) is inclined downwards, two ends of the first spring (7) are respectively arranged on the brake rod (5) and the support ring (1), and the first spring (7) provides force for the brake rod (5) to approach the abutment pier (18).
2. The overhead construction anti-falling device capable of automatically lifting and descending for the bridge pier according to claim 1, wherein the locking mechanism further comprises a ring gear (8), a rotating shaft (6), a braking tooth (9) and a limiting block (10), the ring gear (8) is rotatably arranged on the supporting ring (1), the rotating shaft (6) is rotatably arranged on the supporting ring (1) and is positioned in the ring gear (8), the braking rod (5) is arranged on the rotating shaft (6), a groove (20) is formed in the side wall of the rotating shaft (6), the braking tooth (9) is arranged in the groove (20) in a sliding mode along the rotating shaft (6), the upper end face of the braking tooth (9) is an arc face, a second spring (11) is arranged between the braking tooth (9) and the groove (20), gear teeth are arranged on the outer wall of the ring gear (8), a gear (4) is coaxially arranged on the driving wheel (3), an inner ring of the ring gear (8) is provided with a groove (20), and after the ratchet tooth (9) is rotated, the braking tooth (9) is arranged in the gap between the rotating shaft (10) and the limiting block (1).
3. The upper-bearing type automatic-lifting bridge pier high-altitude construction anti-falling device according to claim 1, wherein the driving mechanism further comprises a hydraulic cylinder (13), the hydraulic cylinder (13) is arranged on the supporting ring (1), and the telescopic end of the hydraulic cylinder (13) is connected with the spindle of the driving wheel (3).
4. The upper-bearing type pier high-altitude construction anti-falling device capable of automatically lifting according to claim 1, wherein a plurality of overhanging pieces (14) are uniformly arranged on the supporting ring (1), the overhanging pieces (14) are arc-shaped, the end parts of the overhanging pieces (14) tilt upwards, the end parts of the overhanging pieces (14) are connected by virtue of pull ropes (15), and the anti-falling net (19) is fixed on the pull ropes (15) by virtue of the reinforcement ropes.
5. The upper-bearing type automatic-lifting pier high-altitude construction anti-falling device according to claim 4, wherein the pull rope (15) is connected with the end part of the cantilever part (14) by means of a buckle.
6. The upper-bearing type automatic-lifting pier high-altitude construction anti-falling device according to claim 1, wherein the anti-falling net (19) is lower than the end far away from the pier (18) at the end near the pier (18).
7. The overhead construction anti-falling device for the pier, which is capable of automatically lifting and lowering according to claim 1, is characterized by further comprising a positioning mechanism, wherein the positioning mechanism comprises a positioning wheel (16), a pipe sleeve (17), a telescopic rod (2) and a third spring (12), the telescopic rod (2) is slidably arranged in the pipe sleeve (17), two ends of the third spring (12) are respectively connected with the telescopic rod (2) and the bottom wall of the pipe sleeve (17), the end part of the telescopic rod (2) is rotatably provided with the positioning wheel (16), the positioning wheel (16) is in butt joint with the side wall of the pier (18), the third spring (12) provides a force for the telescopic rod (2) to approach the pier (18), and the pipe sleeve (17) is arranged on the supporting ring (1).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210617291.3A CN114875797B (en) | 2022-06-01 | 2022-06-01 | Upper-bearing type pier high-altitude construction anti-falling device capable of automatically lifting |
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| CN202210617291.3A CN114875797B (en) | 2022-06-01 | 2022-06-01 | Upper-bearing type pier high-altitude construction anti-falling device capable of automatically lifting |
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