CN202755636U

CN202755636U - Anti-dropping suspension device for elevation type scaffold

Info

Publication number: CN202755636U
Application number: CN 201220000651
Authority: CN
Inventors: 白继东; 秦正强; 秦治显
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-01-04
Filing date: 2012-01-04
Publication date: 2013-02-27
Anticipated expiration: 2022-01-04

Abstract

An anti-dropping suspension device for an elevation type scaffold is provided. Squire steels or round steels are uniformly welded on a back surface of a guide trail (1) as anti-dropping teeth (17). A top plate type anti-dropping device (6) is arranged in a head portion of each attached supporting seat (5). Suspension devices (4) are installed on lower wall-attached supporting seats. When a scaffold body is elevated normally, anti-dropping top plates (10) depart from the back surface of the guide rail, and the guide rail and the scaffold can be elevated freely. When a chain of an electric block (3) is suddenly broken so that the scaffold body falls down along with the guide rail, the suspension devices rapidly loosen an anti-dropping pull wire (7); namely, the suspension devices rapidly generate a linkage effects with the anti-dropping devices. The anti-dropping top plates swing to one side of the guide rail, and abut against the anti-dropping teeth on the guide rail (see the abstract drawing 1). The guide rail and the scaffold body stop falling, the scaffold body is locked in the air, and the scaffold equipment and personnel safety are guaranteed.

Description

The anti-fall erecting by overhang of raise scaffold

Technical field: the utility model relates to a kind of anti-fall erecting by overhang of high-building construction raise scaffold, can effectively prevent the raise scaffold accidental falling.

Background technology: at present, domestic construction is various in style with the anti-drop device of raise scaffold, differ from one another, but all, complex structure inconsiderate owing to its design, complex operation, the reason such as environment for use is abominable, operator's quality is lower, cause in actual use anti-drop device just as ornaments; Finally cause all parts of the country the aerial falling accident of a lot of raise scaffolds to occur successively in recent years, cause huge property loss and casualties.

Summary of the invention: the purpose of this utility model is to overcome the weak point of above-mentioned background technology existence and develops a kind of rational in infrastructure, easy and simple to handle, safe and reliable, environment for use and quality of workers are required low anti-fall erecting by overhang, thereby ensure Construction of High-rise raise scaffold safe operation, guarantee personal safety, reduce property loss.

The technical solution that adopts to achieve the above object of the invention is: welding equably by square steel or round steel as anti-fall tooth in rail back, head at the per pass attachment support all is provided with the top plate type anti-drop device, at lower wall-attached supporting seat erecting by overhang is housed, hang on the electric hoist on the erecting by overhang, lower draw-bar is hooked in the bottom of support body; In the situation with electric hoist chain pretension, be that twice anti-drop device and erecting by overhang connect up and down for anti-fall backguy by a thin steel wire, make anti-fall top board leave rail back by spurring anti-fall backguy again, at this moment, support body can be free lifting under the drive of electric hoist (guide rail, slides up and down under the constraint of attachment support head directive wheel with support body).

When unexpected suddenly disconnection appears in the electric hoist chain, support body falls vertically downward with guide rail, simultaneously, erecting by overhang loses the weight of support body, within it under the effect of section's Compress Spring, pressing plate promotes nut, and nut drive suspension rod, boatswain chair and lock bolt upwards move upward together and anti-fall backguy is loosened; Under the effect of torque spring, anti-fall top board direction guiding rail one side oscillation also is affixed with rail back, and when the anti-fall tooth on the guide rail was run into anti-fall top board, guide rail and support body stopped tenesmus, had ensured support body equipment and personnel's safety.

Compare with background technology, the utility model has the advantage of:

1) head of per pass attachment support all is provided with the top plate type anti-drop device, and anti-drop device all works in lifting operating mode and applying working condition, has improved the safety factor of shelf in the operation use procedure.

2) anti-drop device and wall-attached supporting seat are fixed as one, and turnover will not pulled down by anti-drop device during wall-attached supporting seat, and it is simple in structure, and is easy to operate, the phenomenon that can not cause the workman and because of operating difficulties anti-drop device is removed.

3) the top plate type anti-drop device is quick on the draw reliably, does not produce misoperation, namely can not produce braking in normal situation about descending;

4) environment for use is required low, can not drop on because of a small amount of concrete on guide rail or the anti-drop device and affect anti-drop function.

The beneficial effects of the utility model are, in raise scaffold lifting engineering, when the electric hoist chain the unexpected support body that makes when disconnecting suddenly occurs when vertically falling, anti-fall erecting by overhang is made a response rapidly, anti-fall top board in time withstands the anti-fall tooth on the guide rail, termination support body tenesmus has ensured that support body equipment do not suffer a loss, and guarantees to operate constructor's safety.

Description of drawings

Fig. 1 is raise scaffold lifting schematic diagram

Fig. 2 is anti-drop device analysis schematic diagram

Fig. 3 is erecting by overhang analysis schematic diagram

Fig. 4 is that shelf is at lifting operating mode anti-drop device and erecting by overhang working state schematic representation

Fig. 5 is shelf anti-drop device and erecting by overhang working state schematic representation when occurring falling

1. guide rails and support body among the figure, 2. building, 3. electric hoist, 4. erecting by overhang, 5. wall-attached supporting seat, 6. anti-drop device, 7. anti-fall backguy, 8. handle, 9. torque spring, 10. anti-fall top board, 11. boatswain chairs, 12. suspension rods, 13. Compress Spring, 14. pressing plates, 15. nuts, 16. lock bolts, 17. anti-fall teeth

The specific embodiment

Among Fig. 1, wall-attached supporting seat (5) is bolted on the building (2), erecting by overhang (4) is installed on the lower wall-attached supporting seat (5), the upper hook of electric hoist (3) hangs in the elliptical aperture of erecting by overhang, lower draw-bar hangs over the bottom of guide rail and support body (1), and drive guide rail and support body (1) rise or descend thereby the rotating of motor drive chain moves up and down by electric hoist (3).

Figure four is after with electric hoist chain pretension, lock bolt (16) on erecting by overhang (4) and the anti-drop device (6) is strained and is tightened in anti-fall backguy (7), make anti-fall top board (10) leave rail back, at this moment, guide rail and support body can be under the drive of electric hoist free lifting; At this moment, the interior Compress Spring (13) of the torque spring (9) in the anti-drop device and erecting by overhang all is in confined state (when reading this section should in conjunction with Fig. 2 and Fig. 3).

Fig. 5 is that erecting by overhang and anti-drop device react rapidly after the unexpected disconnection of electric hoist chain, and anti-fall top board (10) withstands anti-fall tooth (17), and guide rail and support body are locked in aerial state; After the unexpected disconnection of electric hoist chain, support body falls vertically downward with guide rail, simultaneously, erecting by overhang loses the weight of support body, within it under the effect of section's Compress Spring (9), pressing plate (14) promotes nut (15), and nut drive suspension rod (12), boatswain chair (11) and lock bolt (16) upwards move upward together and anti-fall backguy is loosened; Under the effect of torque spring (9), anti-fall top board (10) direction guiding rail one side oscillation also is affixed with rail back, and when the anti-fall tooth (17) on the guide rail when running into anti-fall top board, guide rail and support body stop tenesmus.

Claims

1. the anti-fall erecting by overhang of raise scaffold is characterized in that: with the guide rail of anti-fall tooth, with the attachment support of top plate type anti-drop device, can hang the erecting by overhang of electric hoist; Hang on the electric hoist on the erecting by overhang, lower draw-bar is hooked in the bottom of shelf; During the normal lifting of support body, anti-fall top board leaves rail back, shelf can free lifting under the drive of electric hoist, when the unexpected unexpected disconnection of electric hoist chain appearance makes support body fall with guide rail downwards, erecting by overhang loosens anti-fall backguy rapidly, namely produces rapidly connected effect with anti-drop device, and anti-fall top board direction guiding rail one side oscillation is also withstood anti-fall tooth on the guide rail, guide rail and support body stop gliding, and namely support body is aloft pinned.

2. the anti-fall erecting by overhang of raise scaffold as claimed in claim 1 is characterized in that at the square steel of rail back uniform welding or round steel as anti-fall tooth.

3. the anti-fall erecting by overhang of raise scaffold as claimed in claim 1 is characterized in that being provided with the top plate type anti-drop device at the head of per pass attachment support.

4. the anti-fall erecting by overhang of raise scaffold as claimed in claim 1 is characterized in that at lower wall-attached supporting seat erecting by overhang being installed.