CN-116463958-B - Spring-triggered anti-falling safety device

CN116463958BCN 116463958 BCN116463958 BCN 116463958BCN-116463958-B

Abstract

The invention provides a spring-triggered anti-falling safety device which comprises an annular box body and anti-falling locking devices, wherein the annular box body is formed by connecting a plurality of arc-shaped box bodies through bolts, the anti-falling locking devices are uniformly distributed on the annular box body, the annular box body is arranged on a piece to be prevented from falling, the anti-falling locking devices are in unlocking states when the piece to be prevented from falling normally rises and falls, the annular box body and the anti-falling locking devices can be driven to rise and fall normally by the piece to be prevented from falling, and the anti-falling locking devices can be in locking states when the piece to be prevented from falling accidentally and prevent the annular box body and the piece to be prevented from falling continuously. The spring-triggered anti-falling safety device is compact in structure, safe, reliable and easy to operate.

Inventors

LI LONG
LUO LIANG
LIU ZHIHUA
QIN MINGQING
YANG KE
LI TIANJU

Assignees

四川拓扑达机械技术有限公司

Dates

Publication Date: 20260505
Application Date: 20230519

Claims (5)

1. The spring-triggered anti-falling safety device is characterized by comprising an annular box body and an anti-falling locking device; the annular box body is formed by connecting a plurality of arc-shaped box bodies through bolts, the anti-falling locking devices are uniformly distributed on the annular box body, the annular box body is hung on a piece to be prevented from falling through a hanging device, the anti-falling locking devices comprise a disc spring cylinder, a door frame, an upper wedge block and a lower wedge block, the piston end of the disc spring cylinder is hinged with the annular box body, the cylinder end of the disc spring cylinder is hinged with the door frame, the upper wedge block is detachably arranged on the cylinder end of the disc spring cylinder, the lower wedge block is hung on the door frame through a tension spring, the upper wedge block is provided with a downward wedge surface, the lower wedge block is provided with an upward wedge surface, the downward wedge surface of the upper wedge block is contacted with the upward wedge surface of the lower wedge block, when the piece to be prevented from falling accidentally, the annular box body and the piece to be prevented from falling continuously, the anti-falling locking devices also comprise a pressing plate, the pressing plate is detachably arranged on the cylinder end of the disc spring cylinder, the pressing plate is provided with a boss, the pressing plate is provided with two sides of the upper wedge block and the upper wedge block is matched with the two side guide plates through two guide grooves, the two side guide plates are respectively fixed with the upper wedge blocks through the two guide plates, the two guide plates are matched with the upper wedge blocks, guiding the lower wedge block when sliding relative to the upper wedge block.
2. The spring-triggered fall protection safety device according to claim 1, wherein the suspension device comprises a first mounting seat, a second mounting seat, an eyelet bolt, a chain connector, a first pin shaft assembly and two second pin shaft assemblies, the first mounting seat is fixed on the annular box body, the second mounting seat is fixed on a falling member to be tested, one end of the chain is connected with the second mounting seat through the first pin shaft assembly, the other end of the chain is connected with one end of the chain connector through one of the second pin shaft assemblies, the other end of the chain connector is connected with an eyelet end of the eyelet bolt through the other second pin shaft assembly, and a threaded end of the eyelet bolt is fixedly connected with the first mounting seat through a nut.
3. The spring-triggered fall arrest safety device as set forth in claim 1, wherein the annular housing further comprises an upper guide wheel and a lower guide wheel.
4. The spring-activated fall arrest device as set forth in claim 1 wherein said fall arrest lock further comprises a roller pin row having a groove in a downward wedge surface of said upper wedge and said roller pin row being mounted in a groove in a downward wedge surface of said upper wedge and in rolling contact with an upward wedge surface of said lower wedge.
5. The spring activated fall arrest device as claimed in claim 4, wherein the lower wedge is further removably mounted with a friction block.

Description

Spring-triggered anti-falling safety device Technical Field The invention relates to the technical field of building bridge construction, in particular to a spring-triggered anti-falling safety device for cylindrical pier type bridge construction. Background In bridge design, column pier is the structure type that generally adopts. For simply supported bridges, the bent cap is an important component for supporting the bridge, the load of the upper structure is transferred to the lower structure and the foundation through the bent cap, and the bent cap is one of main stress structures. Namely, the capping beam refers to a cross beam, also called a capping beam, arranged at the top of the bent pier for supporting, distributing and transmitting the load of the upper structure. The bridge bent cap construction in the prior art is commonly carried out by a steel bar crossing method, a bracket method, a floor stand method, a traditional anchor ear method and other construction methods. In recent years, a device has been developed that can build temporary supporting devices for a capping beam, such as a supporting main beam, a distributing beam, a capping beam bottom die, and a capping beam construction work platform, at low altitudes, and then use related lifting devices to integrally lift the temporary supporting devices to a construction work position at the time of capping beam high altitudes. The method not only overcomes the defects in the capping beam construction method in the prior art, but also can greatly improve the construction efficiency, reduce the risk of high-altitude operation and ensure the personal safety of constructors. However, the existing lifting devices such as climbing formworks bear vertical load by the friction force of hoop clamping, so that potential safety hazards of accidental falling exist. The market is urgently required to be provided with a safe and reliable anti-falling safety device so as to prevent the climbing formwork and other lifting devices from falling accidentally, and prevent the climbing formwork and other lifting devices from falling continuously when the climbing formwork and other lifting devices fall for a certain distance or reach a certain limit in speed, so that related accidents are prevented from happening. Disclosure of Invention In order to solve the problems in the prior art, the invention provides a spring-triggered anti-falling safety device which is compact in structure, safe and reliable. The anti-falling safety device comprises an annular box body and anti-falling locking devices, wherein the annular box body is formed by connecting a plurality of arc-shaped box bodies through bolts, the anti-falling locking devices are uniformly distributed on the annular box body, the annular box body is arranged on a piece to be prevented from falling, when the piece to be prevented from falling normally goes up and down, the anti-falling locking devices are in unlocking states, the piece to be prevented from falling can drive the annular box body and the anti-falling locking devices to normally go up and down, and when the piece to be prevented from falling accidentally, the anti-falling locking devices can be in locking states to prevent the annular box body and the piece to be prevented from falling continuously. According to the preferable technical scheme, the spring-triggered anti-falling safety device further comprises a hanging device, and the annular box body is hung on a piece to be prevented from falling through the hanging device. The suspension device comprises a first mounting seat, a second mounting seat, an eyelet bolt, a chain connector, a first pin shaft assembly and two second pin shaft assemblies, wherein the first mounting seat is fixed on an annular box body, the second mounting seat is fixed on a falling part to be tested, one end of the chain is connected with the second mounting seat through the first pin shaft assembly, the other end of the chain is connected with one end of the chain connector through one of the second pin shaft assemblies, the other end of the chain connector is connected with the eyelet end of the eyelet bolt through the other second pin shaft assembly, and the threaded end of the eyelet bolt is fixedly connected with the first mounting seat through a nut. According to the preferable technical scheme, an upper guide wheel and a lower guide wheel are further arranged on the annular box body. The anti-falling locking device comprises an upper wedge block and a lower wedge block, wherein the upper wedge block is detachably arranged on an annular box body, the lower wedge block is hung on the annular box body through a tension spring, the upper wedge block is provided with a downward wedge surface, the lower wedge block is provided with an upward wedge surface, the downward wedge surface of the upper wedge block is in contact with the upward wedge surface of the lower wedge block, and when a piece to be prevented from fal