CN212832500U

CN212832500U - Tower crane climbing anti-falling device

Info

Publication number: CN212832500U
Application number: CN202021027417.4U
Authority: CN
Inventors: 张贇; 张禹; 李燕燕; 郭瑞智; 刘如意; 张安在; 张猛; 郝云峰; 蒋兰; 张弛; 那仁满达; 丛中洋; 王磊; 王宁
Original assignee: Inner Mongolia Construction Co ltd
Current assignee: Inner Mongolia Construction Co ltd
Priority date: 2020-06-01
Filing date: 2020-06-01
Publication date: 2021-03-30
Anticipated expiration: 2030-06-01

Abstract

The utility model discloses a tower crane climbing anti-falling device, including box body, safety rope is from the box body upper and lower wall the through-hole vertical running through. Inside the box body, in the left side of safety rope, vertically be provided with three gyro wheel, wherein first gyro wheel and third gyro wheel are fixed roller, the second gyro wheel can compress tightly the safety rope right under compression spring's effect, on the right side of safety rope, vertically be provided with fourth gyro wheel and fifth gyro wheel, connect through synchronous connection piece between two gyro wheels, be provided with in the box body outside and articulate the rocker, articulate the shaft connection of rocker and fifth gyro wheel, under articulating the rocker and pulling, fourth gyro wheel and fifth gyro wheel can be followed the setting before the box body, the curve spout up-and-down motion of back wall, during the upward movement, be in normal operating condition, during the downward movement, be in and prevent weighing down the brake state. Compared with the prior art, the utility model discloses simple structure, reasonable in design, the braking is timely, can effectively improve the reliability of braking.

Description

Tower crane climbing anti-falling device

Technical Field

The utility model relates to a building site safety device specifically indicates a tower crane climbing anti-falling device.

Background

The tower crane is the most commonly used hoisting equipment on the construction site, a cab of the tower crane is arranged at the topmost end of the tower, and operators can only climb a vertical iron ladder arranged on the tower to hoist the tower from work to work. The process has higher potential safety hazard, and operators can cause high-altitude falling accidents due to slipping under feet, stepping in the air and unsmooth grasping by hands. In actual work, the most common anti-falling safety measure is to wear a safety belt for work high above the ground, wherein one end of the safety belt is worn on limbs and trunk of a human body, and the other end of the safety belt is connected with a safety buckle. When an operator climbs the iron ladder, the safety catch on the safety belt is hung on the cross rod of the iron ladder, after climbing a plurality of steps, the hook is detached and hung on a new position again. Such repeated operations have the following problems: firstly, the safety buckle needs to be taken off from the cross rod when the hanging position is changed every time, the safety belt does not play a protection role in the process, and the safety risk is large; and secondly, repeated picking and hanging are carried out, the efficiency is low, the climbing speed is slow, workers often save trouble for the drawing, and safety belts are not hooked in the climbing process, so that greater potential safety hazards are caused.

Chinese patent application No. CN201821913946.7 has carried out certain exploration improvement, provides a novel anti-falling device for climbing pole, including installation box body, safety rope, fixed guide wheel, locking guide wheel, makes two kinds of guide wheels mutually support through drive mechanism and presss from both sides tight wire rope, plays brake braking's effect. However, such a fall protection device has a drawback in structural design, specifically: when operating personnel is out of order to fall, draw the installation pull ring downwards, the installation pull ring can pull and trigger the bull stick downstream, triggers the bull stick height on the left side again low, and the left end of bull stick spout can block on the bull stick slide-bar, can not appear the right-hand member card of the bull stick spout that records among this utility model technical scheme at the epaxial situation of bull stick slide, and this process is not conform to the basic law of mechanics, can not reach anticipated braking effect in the actual work process.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a tower crane climbing anti-falling device, this kind of tower crane climbing anti-falling device simple structure, reasonable in design, the braking is timely, has effectively improved the braking reliability, the safety protection that plays that can be better acts on.

In order to solve the above technical problem, the utility model discloses realize by following structure: a tower crane climbing anti-falling device comprises a box body (1) and a safety rope (2), wherein through holes (3) are correspondingly formed in the upper wall and the lower wall of the box body (1), the safety rope (2) vertically penetrates through the two through holes (3), three rollers are sequentially arranged on the left side of the safety rope (2) from top to bottom in the box body (1), a first roller (4) and a third roller (6) are fixed rollers and are rotatably connected with the front wall and the rear wall of the box body (1) through rotating shafts, a second roller (5) can move left and right along a horizontal sliding groove (7) formed in the front wall and the rear wall of the box body (1), a positioning hole (8) is formed in the left wall of the box body (1) and corresponds to the horizontal sliding groove (7), a wheel shaft support (9) is arranged between the positioning hole (8) and a wheel shaft of the second roller (5), a transverse rod (10) parallel to the wheel shaft of the second roller (5) is arranged in the middle of the wheel shaft support (9, the two ends of the cross rod (10) are respectively and horizontally and fixedly connected with a straight rod (11) rightwards, the end part of the straight rod (11) is rotatably connected with a wheel shaft of the second roller (5), the middle part of the cross rod (10) is horizontally and fixedly connected with a positioning rod (12) leftwards, the positioning rod (12) is a cylinder, threads are arranged on the surface of the positioning rod, the left end part of the positioning rod (12) penetrates out of the positioning hole (8) and is in matched connection with a positioning nut (13), a compression spring (14) is sleeved on the rod body of the positioning rod (12), the compression spring (14) is abutted between the inner side of the left wall of the box body (1) and the cross rod (10), rightwards thrust is applied to the second roller (5), and the second; on the right side of the safety rope (2), two curve sliding grooves (15) are respectively formed in the front wall and the rear wall of the box body (1), a fourth roller (16) and a fifth roller (17) are vertically arranged in the box body (1), rotating shafts of the two rollers are arranged in the curve sliding grooves (15) and move up and down along the curve sliding grooves (15), the fourth roller (16) and the fifth roller (17) are located at the upper right end of the curve sliding grooves (15) during upward movement, the distance between the first roller (4) and the outer circumferential side wall of the fourth roller (16) is 2-8 mm larger than the diameter of the safety rope (2), and the second roller (5) is pushed by a compression spring (14) and is matched with the fifth roller (17) rightwards to clamp the safety rope (2); when the safety rope moves downwards, the fourth roller (16) and the fifth roller (17) move towards the direction close to the safety rope (2) along the curve sliding groove (15), the distance between the left row of rollers and the right row of rollers of the safety rope (2) is gradually reduced, and the safety rope (2) is clamped to play a braking role; be provided with synchronous connection piece (18) between the shaft of fourth gyro wheel (16) and fifth gyro wheel (17), can make two gyro wheels along curve spout (15) synchronous motion, increased the clamping-force to safety rope (2), the shaft both ends of fifth gyro wheel (17) are respectively outwards extended to the box body (1) preceding, the back wall outside, on box body (1) outside right side, be provided with safety rope and articulate rocker (19), it wholly is "U" shape to articulate rocker (19), the both ends of "U" shape are rotated with the shaft both ends of fifth gyro wheel (17) respectively and are connected, "the middle part outside of" U "shape, be provided with safety link (20).

Preferably, the through holes (3) of the upper wall and the lower wall of the box body (1) are provided with pre-tightening bushings (21), the outer rings of the pre-tightening bushings (21) are fixed with the edges of the through holes (3), and the inner rings of the pre-tightening bushings are in interference contact with the safety rope (2).

Preferably, arc grooves are arranged on the outer circumferential side walls of the first roller (4), the second roller (5), the third roller (6), the fourth roller (16) and the fifth roller (17).

Preferably, an anti-slip layer is arranged on the outer circumferential side wall of the first roller (4), the second roller (5), the third roller (6), the fourth roller (16) and the fifth roller (17).

Compared with the prior art, the utility model discloses simple structure, reasonable in design, the braking is timely, can effectively improve the reliability of braking.

Drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, specific embodiments of the present invention will be described in detail below by way of example and not by way of limitation with reference to the accompanying drawings. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

FIG. 1 is a schematic diagram of the overall structure of a tower crane climbing anti-falling device;

FIG. 2 is a schematic diagram of the internal structure of the anti-falling device for climbing a tower crane during normal operation;

FIG. 3 is a schematic diagram of the internal structure of the anti-falling device for climbing a tower crane during anti-falling braking;

FIG. 4 is a schematic structural diagram of a box body shell of the anti-falling device for climbing a tower crane;

FIG. 5 is a schematic diagram of a second roller of the anti-falling device for tower crane climbing.

The reference numbers used in the drawings are as follows:

the safety device comprises a box body 1, a safety rope 2, a through hole 3, a first roller 4, a second roller 5, a third roller 6, a horizontal sliding groove 7, a positioning hole 8, a wheel shaft support 9, a cross rod 10, a straight rod 11, a positioning rod 12, a positioning nut 13, a compression spring 14, a curved sliding groove 15, a fourth roller 16, a fifth roller 17, a synchronous connecting sheet 18, a hanging rocker 19, a safety hanging ring 20 and a pre-tightening bush 21.

Detailed Description

The present invention will be further described with reference to the following examples, but the embodiments of the present invention are not limited thereto, and the scope of the present invention should not be limited by the following examples.

As shown in figures 1 to 5, the anti-falling device for climbing tower crane comprises a box body 1 and a safety rope 2, wherein through holes 3 are correspondingly arranged on the upper wall and the lower wall of the box body 1, the safety rope 2 vertically penetrates through the two through holes 3, three rollers are sequentially and vertically arranged on the left side of the safety rope 2 from top to bottom in the box body 1, a first roller 4 and a third roller 6 are fixed rollers and are rotationally connected with the front wall and the rear wall of the box body 1 through rotating shafts, a second roller 5 can move left and right along a horizontal chute 7 arranged on the front wall and the rear wall of the box body 1, a positioning hole 8 is arranged on the left wall of the box body 1 corresponding to the horizontal chute 7, a wheel shaft support 9 is arranged between the positioning hole 8 and the wheel shaft of the second roller 5, a cross rod 10 parallel to the wheel shaft is arranged in the middle of the wheel shaft support 9, straight rods 11 are respectively and horizontally and fixedly connected to, the end part of the straight rod 11 is rotatably connected with a wheel shaft of the second roller 5, the middle part of the cross rod 10 is horizontally and fixedly connected with a positioning rod 12 leftwards, the positioning rod 12 is a cylinder, the surface of the positioning rod 12 is provided with threads, the left end part of the positioning rod 12 penetrates out of the positioning hole 8 and is matched and connected with a positioning nut 13, a rod body of the positioning rod 12 is sleeved with a compression spring 14, the compression spring 14 abuts against the inner side of the left wall of the box body 1 and the cross rod 10, and right thrust is applied to the second roller 5 to tightly press the second roller 5 on the; on the right side of the safety rope 2, the front wall and the rear wall of the box body 1 are respectively provided with two curve sliding grooves 15, a fourth roller 16 and a fifth roller 17 are vertically arranged in the box body 1, rotating shafts of the two rollers are arranged in the curve sliding grooves 15 and move up and down along the curve sliding grooves 15, when the two rollers move upwards, the fourth roller 16 and the fifth roller 17 are positioned at the upper right end of the curve sliding grooves 15, at the moment, the distance between the first roller 4 and the outer circumferential side wall of the fourth roller 16 is 5mm larger than the diameter of the safety rope 2, and the second roller 5 is pushed by a compression spring 14 and is matched with the fifth roller 17 rightwards to clamp the safety rope 2; when the safety rope moves downwards, the fourth roller 16 and the fifth roller 17 move towards the direction close to the safety rope 2 along the curved sliding groove 15, the distance between the left row of rollers and the right row of rollers is reduced, the safety rope 2 is clamped, and a braking effect is achieved; a synchronous connecting piece 18 is arranged between wheel shafts of a fourth roller 16 and a fifth roller 17, the two rollers can move synchronously along a curve sliding groove 15, the clamping force on a safety rope 2 is increased, two ends of the wheel shaft of the fifth roller 17 extend outwards to the outer sides of the front wall and the rear wall of the box body 1 respectively, a safety rope hanging rocker 19 is arranged on the right side of the outer portion of the box body 1, the hanging rocker 19 is integrally U-shaped, two ends of the U-shaped are rotatably connected with two ends of the wheel shaft of the fifth roller 17 respectively, and a safety hanging ring 20 is arranged on the outer side of the middle of the U-shaped.

The through holes 3 of the upper wall and the lower wall of the box body 1 are provided with pre-tightening bushings 21, the outer rings of the pre-tightening bushings 21 are fixed with the edges of the through holes 3, the inner rings of the pre-tightening bushings 21 are in interference contact with the safety rope 2, friction force between the pre-tightening bushings 21 and the safety rope is increased, and the box body 1 is prevented from easily falling due to the action of gravity. The outer circumferential side walls of the first roller 4, the second roller 5, the third roller 6, the fourth roller 16 and the fifth roller 17 are provided with arc grooves, and the side walls of the grooves are provided with anti-skid layers.

The specific working principle of this embodiment is as follows: the safety rope 2 is arranged on the tower close to the tower iron ladder in advance, the upper end of the safety rope is connected with the top of the tower, the lower end of the safety rope is connected with the bottom of the tower, and the box body 1 is sleeved on the safety rope 2. The utility model discloses need cooperate outside high altitude construction safety belt to use, operating personnel wears the high altitude construction safety belt, buckle the couple of safety belt on articulating rocker 19, operating personnel is upwards climbing iron ladder in-process, articulate 19 upwards lifts up on the rocker, the health pulls box body 1 along 2 rebound of safety rope, until supreme tower top, whole process need not manually adjust box body 1, when taking place to fall, articulate 19 upset downwards on the rocker, body weight power is used in articulating and drives fourth gyro wheel 16 and fifth gyro wheel 17 along curve spout 15 and move down left on rocker 19, with first gyro wheel 4, second gyro wheel 5 and the cooperation of third gyro wheel 6 press from both sides safety rope 2 tightly, play the braking and prevent weighing down. When the operator moves downwards along the iron ladder, the box body 1 is manually pressed downwards for a certain distance to reach the ground.

Thus, it should be appreciated by those skilled in the art that while exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations and modifications can be made in accordance with the principles of the invention without departing from the spirit and scope of the invention, which is broadly defined and defined herein. Accordingly, the scope of the present invention should be understood and interpreted to cover all such other variations and modifications.

Claims

1. The utility model provides a tower crane climbing anti-falling device, includes box body (1), safety rope (2), the upper wall and the lower wall of box body (1) correspond and are provided with through-hole (3), and safety rope (2) are from two through-holes (3) vertical through-going through, its characterized in that: three rollers are sequentially arranged on the left side of the safety rope (2) in the box body (1) from top to bottom, wherein a first roller (4) and a third roller (6) are fixed rollers and are rotationally connected with the front wall and the rear wall of the box body (1) through rotating shafts, the second roller (5) can move left and right along a horizontal sliding chute (7) arranged on the front wall and the rear wall of the box body (1), a positioning hole (8) is arranged at a position on the left wall of the box body (1) corresponding to the horizontal sliding chute (7), a wheel shaft support (9) is arranged between the positioning hole (8) and a wheel shaft of the second roller (5), a transverse rod (10) parallel to the wheel shaft of the second roller (5) is arranged in the middle of the wheel shaft support (9), straight rods (11) are horizontally and fixedly connected to the right sides respectively at two ends of the transverse rod (10), the end parts of the straight rods (11) are rotationally connected with the wheel shaft of the second roller (5), and a positioning rod (12, the positioning rod (12) is a cylinder, the surface of the positioning rod is provided with threads, the left end part of the positioning rod (12) penetrates out of the positioning hole (8) and is connected with the positioning nut (13) in a matching mode, a compression spring (14) is sleeved on a rod body of the positioning rod (12), the compression spring (14) abuts against the inner side of the left wall of the box body (1) and the cross rod (10), and the second roller (5) is pressed on the safety rope (2); on the right side of the safety rope (2), two curve sliding grooves (15) are respectively formed in the front wall and the rear wall of the box body (1), a fourth roller (16) and a fifth roller (17) are vertically arranged in the box body (1), rotating shafts of the two rollers are arranged in the curve sliding grooves (15) and move up and down along the curve sliding grooves (15), the fourth roller (16) and the fifth roller (17) are located at the upper right end of the curve sliding grooves (15) during upward movement, the distance between the first roller (4) and the outer circumferential side wall of the fourth roller (16) is 2-8 mm larger than the diameter of the safety rope (2), and the second roller (5) is pushed by a compression spring (14) and is matched with the fifth roller (17) rightwards to clamp the safety rope (2); when the safety rope moves downwards, the fourth roller (16) and the fifth roller (17) move towards the direction close to the safety rope (2) along the curved sliding groove (15), the distance between the left row of rollers and the right row of rollers of the safety rope (2) is gradually reduced, and the safety rope (2) is clamped; a synchronous connecting piece (18) is arranged between wheel shafts of a fourth roller (16) and a fifth roller (17), two ends of the wheel shaft of the fifth roller (17) extend outwards to the outer sides of the front wall and the rear wall of the box body (1) respectively, a safety rope hanging rocker (19) is arranged on the right side of the outer portion of the box body (1), the hanging rocker (19) is integrally U-shaped, two ends of the U-shape are rotatably connected with two ends of the wheel shaft of the fifth roller (17) respectively, and a safety hanging ring (20) is arranged on the outer side of the middle of the U-shape.

2. The tower crane climbing anti-falling device according to claim 1, characterized in that: through holes (3) of the upper wall and the lower wall of the box body (1) are provided with pre-tightening bushings (21), the outer rings of the pre-tightening bushings (21) are fixed with the edges of the through holes (3), and the inner rings of the pre-tightening bushings are in interference contact with the safety rope (2).

3. The tower crane climbing anti-falling device according to claim 1, characterized in that: and arc grooves are formed in the side walls of the outer circumferences of the first roller (4), the second roller (5), the third roller (6), the fourth roller (16) and the fifth roller (17).

4. The tower crane climbing anti-falling device according to claim 1, characterized in that: and the outer circumferential side walls of the first roller (4), the second roller (5), the third roller (6), the fourth roller (16) and the fifth roller (17) are provided with anti-skid layers.