CN213265479U

CN213265479U - Safety device for personnel commuting of tower crane

Info

Publication number: CN213265479U
Application number: CN202021868519.9U
Authority: CN
Inventors: 朱明�; 赵洪君; 冯明伟; 黄明光; 张迎
Original assignee: China Gezhouba Group No 2 Engineering Co Ltd
Current assignee: China Gezhouba Group No 2 Engineering Co Ltd
Priority date: 2020-09-01
Filing date: 2020-09-01
Publication date: 2021-05-25
Anticipated expiration: 2030-09-01

Abstract

The utility model discloses a safety device that tower crane personnel commuted, the mounting panel is included, along the vertical direction of mounting panel through the 1 st leading wheel of logical axle dress on the mounting panel, the 2 nd leading wheel, be located the 1 st, the take-up pulley of 2 leading wheel homonymies, the dress is at the epaxial ratchet mechanism that leads to, the dress has the 1 st slider studio of through-hole in the bottom of mounting panel lower part, the 2 nd slider studio that has the through-hole in the bottom, be located the 1 st slider in the 1 st slider studio, be located the 2 nd slider in the 2 nd slider studio, through ejector pin dislocation axle articulated 1, 2 atress ejector pins, be equipped with the fluted disc of taking the draw-in groove on the 1 st leading wheel on the inner wall, there is the receipts claw dish of dress in the logical axle among the ratchet mechanism, have with the pawl dish with. The structure design is reasonable, and the operation is simple and convenient; can effectively ensure that the personnel on duty scrambles the in-process and takes place the accident of falling that leads to taking off one's hand, repeatedly usable can practice thrift construction cost and ensure construction safety.

Description

Safety device for personnel commuting of tower crane

Technical Field

The utility model relates to a safety device of tower crane personnel's commute is applicable to the safety protection of tower crane climbing in-process, and the safety protection of the tower crane personnel of specially adapted no elevator.

Background

At present, the tower crane who does not have the elevator is adopted to the majority, what equipment adopted about driver and maintainer are the cat ladder form often, but generally only middle part sets up the rest platform in the tower crane standard festival, and also do not have any rail protection facility around the platform, personnel do not have any safeguard measure at the climbing in-process basically, the condition of taking place to take off one's hands at the climbing in-process of one climbing personnel, then fall into the platform lightly, then fall into ground crisis life seriously, how to solve the personnel of commuting and climb the in-process and take place the accident of falling that leads to taking place to take off one's hands and.

Disclosure of Invention

The utility model aims at providing a can guarantee not bringing under the prerequisite that too big cost increased, effectively solve tower crane staff on duty and climb the in-process and take place to take off the hand the safety device of tower crane staff's the accident of falling that leads to.

The purpose of the utility model is realized like this:

the safety device for personnel commuting of the tower crane comprises a mounting plate 1, a 1 st guide wheel 18 arranged on the mounting plate through a through shaft along the vertical direction of the mounting plate, a 2 nd guide wheel 21, a tension wheel 17 positioned on the same side of the 1 st and 2 nd guide wheels, a ratchet mechanism 2 arranged on the through shaft, a 1 st sliding block working chamber 11 arranged at the lower part of the mounting plate 1 and provided with a through hole at the bottom, a 2 nd sliding block working chamber 23 provided with a through hole at the bottom, a 1 st sliding block 12 arranged in the 1 st sliding block working chamber, a 2 nd sliding block 22 arranged in the 2 nd sliding block working chamber, a 1 st and a 2 nd stressed

ejector rod

9 and 24 hinged through an ejector rod dislocation shaft 10, a fluted disc 16 provided with a clamping groove on the inner wall of the 1 st guide wheel 18, a pawl collecting disc 5 arranged on the through shaft in the ratchet mechanism 2, a pawl disc 6 provided with a pawl matched with the clamping groove on the fluted disc 16, a sliding pin chamber 8 arranged on the pawl of the pawl disc 6, and the other end of a pawl collecting sliding pin 7 connected The claws are connected and drive the pawls to slide along the sliding pin chamber, the lower end of a 1 st stressed ejector rod 9 extends into a 2 nd slide block working chamber 23 to be hinged with a 2 nd slide block 22, the upper end of the 1 st stressed ejector rod 9 is hinged with a claw collecting disc 5, the lower end of a 2 nd stressed ejector rod 24 extends into a 1 st slide block working chamber 11 to be hinged with a 1 st slide block 12, the upper end of a 2 nd stressed ejector rod 24 is hinged with the claw collecting disc 5, the 1 st end of a safety rope 25 matched with the clamping grooves on a 1 st guide wheel 18 and a 2 nd guide wheel 21 penetrates through a through hole at the bottom of the 1 st slide block working chamber 11 to be connected with a balancing weight 15, and the 2 nd end penetrates through a through hole at the bottom of the 2 nd slide block working chamber.

The two ends of the pawl receiving groove on the pawl disk 6 are respectively provided with a strong magnet block 3.

The 1 st end of the safety line 25 is provided with a lower restraining post 14 and the 2 nd end is provided with an upper restraining post 19.

The bottom of the 1 st sliding block working chamber 11 is provided with a counterweight block conduit 13.

The utility model discloses a safety rope length and balancing weight set up according to the high definite setting of tower crane tree stand. When commuter climbs the in-process upwards, the safety rope upwards mentions the safety rope through leading wheel, ratchet according to climbing personnel's climbing speed under the action of gravity of balancing weight, and the safety rope constantly mentions the safety rope along with climbing personnel upward movement, guarantees that the safety rope is in the tensioning state always. When a person takes off the hand, the guide wheel, the ratchet wheel in the ratchet wheel mechanism and the tension wheel are stressed to stop the safety rope from moving and prevent the safety rope from moving downwards, so that the person is ensured to be fixed at the hand-off position. When commuter climbs the process downwards, make ratchet stop action, the safety rope is in the tensioning state under the pulling force of balancing weight and can slowly put down commuter, when personnel take off the hand, because the extrusion force of take-up pulley makes its safety rope slowly descend, descends at rest platform safely.

The utility model has the advantages as follows:

the personnel commuting safety device of the tower crane has simple structure, can be processed on site and is convenient to operate; but also this device reuse can effectively solve the personnel on duty and climb the accident of falling that the in-process takes place to take off the hand and lead to, again can reduce cost. The falling accident caused by the falling off of the hand of the commuter in the climbing process can be effectively prevented, and the safety of the commuter is ensured; the probability of safety production accidents of special equipment can be effectively reduced. The personnel commuting safety device of the tower crane has the advantages of simple manufacture, flexible and convenient use, high rigidity and suitability for quick installation and use of the tower crane.

Drawings

Fig. 1 is a schematic view of the installation position of the present invention.

Fig. 2 is a schematic structural diagram of the present invention.

FIG. 3 is a perspective view showing the positions of the pawl plate, the pawl retracting plate and the gear plate.

FIG. 4 is a schematic view showing the positions of the pawl plate, the pawl retracting plate and the gear plate.

FIG. 5 is a schematic view showing the positions of the pawl plate, pawl slide pin, slide pin chamber and magnet block.

Detailed Description

Referring to fig. 1-5, the safety device for personnel commuting of the tower crane comprises a mounting plate 1, a 1 st guide wheel 18, a 2 nd guide wheel 21, a tension wheel 17 positioned on the same side of the 1 st and 2 nd guide wheels, a ratchet mechanism 2, a 1 st sliding block working chamber 11, a 2 nd sliding block working chamber 23, a 1 st sliding block 12, a 2 nd sliding block 22, a 1 st and 2 nd stressed

ejector rods

9 and 24, a 1 st and 2 nd guide wheel 18, a toothed disc 16 with clamping grooves, a claw collecting disc 5 and a claw disc 6, wherein the claw collecting disc 5 is arranged on the through shaft, and the claw disc 6 is provided with a claw matched with the clamping grooves on the toothed disc 16. The pawl of the pawl disk 6 is provided with a sliding pin chamber 8. The other end of a pawl claw-retracting sliding pin 7 with one end connected with the claw-retracting disc penetrates through the sliding pin chamber to be connected with a corresponding pawl on the pawl disc and drives the pawl to slide along the sliding pin chamber. The lower end of the 1 st stressed mandril 9 extends into the 2 nd slide block working chamber 23 and is hinged with the 2 nd slide block 22. The upper end of the 1 st stressed ejector rod 9 is hinged with the claw-retracting disk 5, and the lower end of the 2 nd stressed ejector rod 24 extends into the 1 st sliding block working chamber 11 and is hinged with the sliding block 12. The upper end of the 2 nd stressed mandril 24 is hinged with the jaw closing disc 5, the 1 st end of the safety rope 25 matched with the clamping grooves on the 1 st and 2

nd guide wheels

18 and 21 passes through the through hole at the bottom of the 1 st sliding block working chamber 11 and then is connected with the balancing weight 15, and the 2 nd end passes through the through hole at the bottom of the 2 nd sliding block working chamber 23 and then is connected with the pull ring 20. The two ends of the pawl receiving groove on the pawl disk 6 are respectively provided with a strong magnet block 3. The 1 st end of the safety line 25 is provided with a lower restraining post 14 and the 2 nd end is provided with an upper restraining post 19. The bottom of the 1 st sliding block working chamber 11 is provided with a counterweight block conduit 13.

When a person clamps the safety belt snap ring into the pull ring 20, the safety rope moves upwards through the pulley block under the downward acting force of the balance weight block 15, so that the safety rope on the body of the person is kept in an upwards tensioning state, in the process, if the person breaks free in climbing, the pawls on the pawl disc 6 of the ratchet mechanism 2 are orderly meshed with the clamping grooves of the guide wheels 18, the guide wheels 18 are clamped under the action of the ratchet mechanism 2, meanwhile, the friction force of the safety rope between the

guide wheels

18 and 21 is increased under the acting force of the tension wheel 17, the safety rope stops moving, the person is fixed at the breaking position, when the person grabs the ladder again, and when the person climbs the ladder upwards, the pawls on the pawl disc 6 of the ratchet mechanism 2 are discontinuously meshed with the clamping grooves of the guide wheels 18 again;

when a person climbs to the top end, the safety belt pull ring 20 of the person is detached, the upper limiting column 19 on the safety rope jacks the slide block 22 in the slide block working chamber 23 to drive the stressed jacking rod 24 to move upwards, the pawl on the pawl disc 6 is tightened to the axis by driving the pawl disc 5 to move clockwise (the pawl retracting slide pin 7 on the pawl disc 5 is provided with the slide pin chamber 8 on the pawl of the pawl disc 6), the two ends of the pawl retracting groove are respectively provided with the strong magnet blocks 3, the protruding part of the pawl disc 5 ensures that the clamping groove in the guide wheel 18 and the pawl on the pawl disc 6 are separated and fixed without rebounding when rotating to the strong magnet blocks 3, and at the moment, the guide wheel 18 loses the ratchet action. Ready for the next step of downward climbing.

When a person climbs downwards, although the upper limiting column 19 is separated from the sliding block 22, under the action of the strong magnet 3, the guide wheel 18 still loses the ratchet action, the safety rope moves upwards through the pulley block under the downward acting force of the balancing weight 15, so that the safety rope on the person is kept in an upwards tensioning state, in the process, if the person breaks free hand in climbing, the friction force of the safety rope between the

guide wheels

18 and 21 is increased under the acting force of the tensioning wheel 17, at the moment, the weight of the person exceeds the weight of the balancing weight 15, the person slowly descends, and the person can safely land on a nearby platform; when the personnel climb again, the safety rope does not receive downward effort, and the guiding

pulley

18, 21 and the frictional force of take-up pulley 17 reduce, and the safety rope continues upward movement through the assembly pulley under the downward effort of balancing weight 15. When the person arrives at the ground, the pull ring 20 is detached, the lower limiting column 14 repeats the action of the upper limiting column 19, the protruding part of the pawl-retracting disk 5 rotates anticlockwise and slides to the strong magnet at the other end in the opposite direction, and the ratchet action of the guide wheel 18 is recovered. And preparing for the next step of upward climbing.

Claims

1. The safety device for personnel commuting of the tower crane is characterized by comprising a mounting plate (1), a 1 st guide wheel (18) arranged on the mounting plate through a through shaft in the vertical direction of the mounting plate, a 2 nd guide wheel (21), a tension wheel (17) positioned on the same side of the 1 st guide wheel and the 2 nd guide wheel, a ratchet mechanism (2) arranged on the through shaft, a 1 st slide block working chamber (11) with a through hole at the bottom of the lower part of the mounting plate, a 2 nd slide block working chamber (23) with a through hole at the bottom, a 1 st slide block (12) positioned in the 1 st slide block working chamber, a 2 nd slide block (22) positioned in the 2 nd slide block working chamber, a 1 st stressed ejector rod (9) hinged through an ejector rod dislocation shaft (10), a 2 nd stressed ejector rod (24), a fluted disc (16) with a clamping groove arranged on the inner wall of the 1 st guide wheel (18), and a claw collecting disc (5) arranged on, Pawl dish (6) with draw-in groove complex pawl on fluted disc (16), there is sliding pin room (8) on the pawl of pawl dish (6), the other end of pawl receipts claw sliding pin (7) that one end is connected with receipts claw dish (5) passes sliding pin room and is connected and drive the pawl and slide along sliding pin room with the corresponding pawl on the pawl dish, the lower extreme of 1 st atress ejector pin (9) stretches into 2 nd slider studio (23) in and articulates with 2 nd slider (22), the upper end of 1 st atress ejector pin (9) is articulated with receipts claw dish (5), the lower extreme of 2 nd atress ejector pin (24) stretches into in 1 st slider studio (11) and articulates with 1 st slider (12), the upper end of 2 nd atress ejector pin (24) is articulated with receipts claw dish (5), be connected with balancing weight (15) after passing the through-hole of 1 st slider studio bottom and the 2 nd end passes 2 nd slider studio (23) bottom Is connected with the pull ring (20) at the rear part.

2. The tower crane personnel commuting safety device according to claim 1, wherein the pawl receiving slot on the pawl plate (6) is provided with a strong magnet block (3) at each end.

3. A tower crane personnel commuting safety device according to claim 1 or 2, characterised in that the 1 st end of the safety line (25) is provided with a lower limit post (14) and the 2 nd end with an upper limit post (19).

4. Safety device for personnel commuting in a tower crane according to claim 1 or 2, characterised in that the counterweight duct (13) is mounted at the bottom of the 1 st slide working chamber (11).