CN209780307U

CN209780307U - Scaffold falling-preventing device

Info

Publication number: CN209780307U
Application number: CN201920385696.2U
Authority: CN
Inventors: 宁永刚; 颜朋辉
Original assignee: Henan Vocational and Technical College of Communications
Current assignee: Henan Vocational and Technical College of Communications
Priority date: 2019-03-26
Filing date: 2019-03-26
Publication date: 2019-12-13
Anticipated expiration: 2029-03-26

Abstract

The utility model relates to a scaffold frame anti-falling device. The utility model discloses a scaffold frame anti-falling device is in the course of the work, hoisting structure passes through the lifting rope and is connected with the locking claw, provide the hoist and mount power, the connecting portion of locking claw receive ascending power this moment, make it upwards rotate around the articulated shaft, the locking head moves down, the leading wheel can rotate automatically, when the lifting rope fracture, the connecting portion of locking claw no longer atress, it downwards rotates under the effect of dead weight, this is that the locking head upwards rotates, the chucking is to the leading wheel and prevent weighing down in the clearance between the pole, make the leading wheel card die, can't rotate, it falls to place the scaffold frame.

Description

Scaffold falling-preventing device

Technical Field

The utility model relates to a scaffold frame anti-falling device.

Background

In the field of construction, scaffolds are often used for construction, and among them, lifting scaffolds are widely used. If the Chinese patent with the publication number of CN204024016U discloses a scaffold self-locking anti-falling device, the anti-falling device comprises a lifting hook, the lifting hook is welded on a lifting hook fixing block, a connecting rod is arranged on the lifting hook fixing block and is perpendicular to the moving direction of the lifting hook fixing block, a spring fixing block is arranged on the upper surface of the connecting rod, and the connecting rod is fixedly connected with a first locking block; the anti-falling device further comprises an anti-falling rod, wherein a first locking block is arranged on one side of the anti-falling rod, a second locking block is correspondingly arranged on the other side of the anti-falling rod, the second locking block is fixedly arranged on the first protective baffle, the first protective baffle is provided with a second protective baffle corresponding to the locking block in the direction, and the first protective baffle and the second protective baffle are fixedly connected through bolts.

Meanwhile, the chinese patent document with the granted publication number CN207363242U also discloses an anti-falling device for a lifting scaffold, which comprises a limiting plate and an anti-falling device arranged on one side of the limiting plate, wherein the upper end of the limiting plate is vertically connected with a baffle plate, the other side of the limiting plate is provided with a return spring, the return spring is sleeved on a spring fixing shaft, the return spring is parallel to the limiting plate, and the upper elastic part of the return spring is tightly attached to the side wall of the limiting plate; the safety hook is connected through the fixed axle on attaching the wall support, and the anti-falling pendulum mass of safety hook supports and leans on limiting plate one side, the safety hook centers on when the fixed axle is clockwise rotation, the terminal conflict of safety hook return spring's lower elastic component.

The anti-falling device with the two structures adopts the spring to provide locking force, and in the actual use process, the spring is likely to fail due to reasons such as time environment and the like, so that the safety of the anti-falling device is reduced.

SUMMERY OF THE UTILITY MODEL

the utility model provides a scaffold anti-falling device to solve the problem that the security that current scaffold anti-falling device caused because of the spring inefficacy is low.

The utility model discloses a scaffold frame anti-falling device adopts following technical scheme:

The scaffold anti-falling device comprises an anti-falling rod which extends along the up-down direction and an anti-falling shell which is assembled on the anti-falling rod in a guiding and moving way, the anti-falling shell is internally provided with a guide wheel set which is in rolling fit with the anti-falling rod, the guide wheel set comprises more than two guide wheels which are in rolling fit with the anti-falling rod, the anti-falling shell is hinged and assembled with a locking claw below the guide wheel, the locking claw is provided with a locking head of a wedge-shaped structure and a connecting part, the locking head is inserted between the guide wheel and the anti-falling rod, the connecting part is arranged opposite to the locking head and is used for being connected with a lifting rope, the gravity of one end of the connecting part of the locking claw is larger than that of one end of the locking head of the locking claw, so that one end of the connecting part rotates downwards around the hinge shaft when the lifting rope is disconnected, so that the locking head rotates upwards and is clamped in a gap between the guide wheel and the anti-falling rod.

prevent weighing down and be equipped with the limiting plate that extends along the horizontal direction in the casing, it is equipped with the connecting rod to follow upper and lower direction removal on the limiting plate, connecting portion pass through the connecting rod is connected with the lifting rope.

And an adjusting nut used for being matched with the limiting plate in a downward blocking manner is assembled on the connecting rod at the position above the limiting plate in a threaded manner.

The locking claw comprises a body with a small left end and a large right end, and the locking head is arranged at the left end of the body and extends upwards.

And a limiting pin is arranged below the locking head of the locking claw on the anti-falling shell.

Four guide wheels are oppositely arranged on the left and right in pairs.

The utility model has the advantages that: the utility model discloses a scaffold frame anti-falling device is in the course of the work, hoisting structure passes through the lifting rope and is connected with the locking claw, provide the hoist and mount power, the connecting portion of locking claw receive ascending power this moment, make it upwards rotate around the articulated shaft, the locking head moves down, the leading wheel can rotate automatically, when the lifting rope fracture, the connecting portion of locking claw no longer atress, it downwards rotates under the effect of dead weight, this is that the locking head upwards rotates, the chucking is to the leading wheel and prevent weighing down in the clearance between the pole, make the leading wheel card die, can't rotate, it falls to place the scaffold frame.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a schematic structural view (normal state) of an embodiment of the anti-falling device for scaffold of the present invention;

Fig. 2 is a schematic structural view (falling state) of an embodiment of the anti-falling device for scaffold of the present invention;

In the figure: 1. the anti-falling shell; 2. a guide wheel; 3. preventing falling down the rod; 4. a locking claw; 5. a connecting member; 6. a connecting rod; 7. a lifting rope; 11. a limiting plate; 41. a locking head; 42. hinging a shaft; 43. and a limiting pin.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

the embodiment of the scaffold falling-preventing device of the utility model, as shown in fig. 1 to fig. 2, the scaffold falling-preventing device comprises a falling-preventing rod 3 extending along the up-down direction and a falling-preventing shell 1 moving and assembled on the falling-preventing rod 3, a guide wheel set matched with the falling-preventing rod 3 in a rolling way is assembled in the falling-preventing shell 1, the guide wheel set comprises more than two guide wheels 2 matched with the falling-preventing rod 3 in a rolling way, a locking claw 4 is hinged and assembled on the falling-preventing shell 1 below the guide wheels 2, the locking claw 4 is provided with a locking head 41 of a wedge structure inserted between the guide wheels and the falling-preventing rod 3 and a connecting part arranged opposite to the locking head and used for connecting with a lifting rope 7, the gravity of one end of the connecting part of the locking claw 4 is greater than that of one end of the locking head 41 so as to enable one end of the connecting part to rotate, so that the locking head 41 is pivoted upward and is clamped in the gap between the guide wheel 2 and the safety brake lever 3.

Prevent weighing down and be equipped with the limiting plate 11 that extends along the horizontal direction in the casing 1, the upper and lower direction removal of edge is equipped with connecting rod 6 on the limiting plate 11, and connecting portion pass through connecting rod 6 and are connected with lifting rope 7, specifically, still are equipped with connecting piece 5 between connecting rod and locking claw. The step that has the top press fit with the spacing board below the connecting rod, this step can make the hoist and mount power of lifting rope shift prevent weighing down the shell on, avoid the locking claw atress too big.

In the embodiment, the connecting rod 6 is threadedly assembled with an adjusting nut for downward stop-fitting with the limiting plate 11 at a position above the limiting plate 11, and the adjusting nut is mainly used for preventing the position of the connecting rod moving downward from being limited.

Locking claw 4 includes the big body of the little right-hand member of left end, and locking head 41 sets up the left end at the body and upwards extends the setting, adopts this kind of structure to make locking claw simple structure, and processing is convenient.

In order to avoid the over-limit rotation of the locking claw, in the present embodiment, a limit pin 43 is disposed below the locking head 41 of the locking claw 4 on the anti-falling housing 1, so that the rotation angle of the locking claw is limited.

In this embodiment, four guide wheels 2 are provided in pairs opposite to each other on the left and right sides, so that the guide capability can be improved.

The utility model discloses a scaffold frame anti-falling device is in the course of the work, hoisting structure passes through the lifting rope and is connected with the locking claw, provide the hoist and mount power, the connecting portion of locking claw receive ascending power this moment, make it upwards rotate around the articulated shaft, the locking head moves down, the leading wheel can rotate automatically, when the lifting rope fracture, the connecting portion of locking claw no longer atress, it downwards rotates under the effect of dead weight, this is that the locking head upwards rotates, the chucking is to the leading wheel and prevent weighing down in the clearance between the pole, make the leading wheel card die, can't rotate, it falls to place the scaffold frame.

In other embodiments of the utility model, the lifting rope can be directly connected with the locking claw; a connecting part of the locking claw can be provided with a weighting structure to improve the gravity of the section and improve the safety; the number of guide wheels can be specifically set according to needs, such as one pair, three pairs or four pairs.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. Scaffold anti-falling device, including the anti-falling pole and the direction removal assembly that extend to set up from top to bottom prevent weighing down the casing of preventing on the pole, its characterized in that: prevent weighing down the casing in be equipped with prevent weighing down pole roll complex direction wheelset, the direction wheelset include more than two with prevent weighing down pole roll complex leading wheel, prevent weighing down on the casing in the below of leading wheel is articulated to be equipped with the locking claw, the locking claw has and is used for the cartridge to be in the leading wheel with prevent weighing down wedge structure between the pole locking head and with the relative setting of locking head, be used for the connecting portion of being connected with the lifting rope, the gravity of the one end of the connecting portion of locking claw is greater than the gravity of its locking head one end so that when the lifting rope breaks off the one end of connecting portion rotates downwards around the articulated shaft to make the locking head upwards rotate the chucking arrive in the leading wheel with prevent in the clearance between the pole.

2. The scaffold fall arrest device according to claim 1, wherein: prevent weighing down and be equipped with the limiting plate that extends along the horizontal direction in the casing, it is equipped with the connecting rod to follow upper and lower direction removal on the limiting plate, connecting portion pass through the connecting rod is connected with the lifting rope.

3. The scaffold fall arrest device according to claim 2, wherein: and an adjusting nut used for being matched with the limiting plate in a downward blocking manner is assembled on the connecting rod at the position above the limiting plate in a threaded manner.

4. The scaffold fall arrest device according to any one of claims 1 to 3, wherein: the locking claw comprises a body with a small left end and a large right end, and the locking head is arranged at the left end of the body and extends upwards.

5. The scaffold fall arrest device according to any one of claims 1 to 3, wherein: and a limiting pin is arranged below the locking head of the locking claw on the anti-falling shell.

6. The scaffold fall arrest device according to claim 5, wherein: four guide wheels are oppositely arranged on the left and right in pairs.