CN2223286Y

CN2223286Y - Rope-controling brake gantry

Info

Publication number: CN2223286Y
Application number: CN 95230039
Authority: CN
Inventors: 彭忠杰
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-01-10
Filing date: 1995-01-10
Publication date: 1996-03-27
Anticipated expiration: 2005-01-10

Abstract

The utility model relates to a rope-controlling brake gantry. The present tower crane has the disadvantages of high cost and complicated structure. The utility model comprises a door-shaped frame, a rail which is fixed with the door-shaped frame, a set of guide wheels move along the rail, wherein, the guide wheels are fixed on a hanging scaffold; a brake spring assembly is arranged on the hanging scaffold; braking ropes are arranged between the brake spring assembly and a thumb wheel; one end of the brake spring assembly is provided with a pressing cam, a pressure lever whose swinging movement is controlled by the pressing cam and a gate which can be pressed on the rail by the pressure lever. Because the utility model has the advantages that the ground occupying is small, the door-shaped weight bearing has no suspension arm and high safety, the cost price is reduce by more than 70% as compared with a tower crane, and the utility model can be widely used for building communal and civil buildings with the height of less than 100 meters.

Description

Rope control driven portal frame

The utility model relates to the improvement of brake equipment on a kind of planer-type crane for building, particularly such crane.

Existing building adopts tower hanging with crane, cost cost height reaches tens thousand of hundreds thousand of units, and idol has and adopts the planer-type suspension bracket, because the brake system complexity, braking effect is bad, and safety factor is low.

The utility model provides a kind of simple and safe planer-type crane that utilizes the spring distortion to form friction braking.

Content of the present utility model comprises: door-shaped frame, the guide rail affixed with door-shaped frame, four groups of guide wheels along the guide rail operation, this guide wheel is fixed on the hanging scaffold, the retarding spring assembly is housed on the hanging scaffold, with the running rope that is equipped with of lifting rope bonded assembly thumb wheel, retarding spring assembly one end has and compresses cam, compressed the depression bar of cam-controlled swing and can be pressed in flashboard on the guide rail by depression bar on this assembly and the hanging scaffold.

On flashboard, can have eight shape pilot holes.

Between contact roller and depression bar, can be installed with the axis of guide, the spring of having is arranged on the axis of guide, the hand brake bar that connects firmly with hanging scaffold can be housed on check band.

Advantage of the present utility model is:

1, simple in structure, cost is low, therefore can save a large amount of capexs, and dissemination is great.

2, when check band once loosening, retarding spring play bullet immediately, drives to compress the cam rotation, makes two depression bars to intermediary movements, pushes down the flashboard with rail friction, lock is firmly under the friction force braking to make hanging scaffold.

3, the loosening reason of check band can be lifting rope suddenly open circuited dangerous accident cause, also can be to rotate hand brake bar that emergency uses to make check band artificially loosening and cause, make it the safe a certain story height that is parked in.

4, when the non-safety of hanging scaffold moves down, because the acceleration due to gravity effect, it is more and more faster to glide, certainly lead to certain vibration, adding that the hanging scaffold band than high acceleration moves down, and makes depression bar move down along the splayed on the flashboard, by the splayed hole flashboard is pressed in to make hanging scaffold stop to move down on the guide rail.

Fig. 1 is an overall structure scheme drawing of the present utility model.Fig. 2 is Figure 1A-A section-drawing, and Fig. 3 is Figure 1B-B section-drawing, and Fig. 4 is Fig. 1 C-C section-drawing.

Embodiment 1: form truss with shaped steel, truss is that the bearing frame profile of lifting appliance is " Jiong " shape, the framework that forms by this truss, on framework, be fixed with pair of guide rails 1, respectively there are two pairs of guide wheels 2 to move on the guide rail along guide rail, guide wheel is fixed on the hanging scaffold 3, retarding spring assembly 4 also is housed on the hanging scaffold, spring assembly comprises spring 5, withstand on the loop bar 5 on the hanging scaffold of being packed in of spring one end, that passes that loop bar 6 withstands on that opposite side links to each other with check band 12 on spring 5 other ends moves bar 7, is hinged with a guide rod 8 on the shifting bar 7, compresses cam 9 on the other end of guide rod 8.When the check band 12 that passes shifting bar upper end roller unclamps, spring 5 relies on loop bar 6 that shifting bar is promoted downwards, shifting bar has guide rod 8 to be made and compresses cam 9 and rotate, thereby the pulling axis of guide 10, press to a pair of flashboard 13 that is installed in the guide rail by a pair of depression bar 11 that the axis of guide 10 can be swung, make the hanging scaffold braking by friction force.The reason that check band unclamps has two kinds, a kind of is the lifting rope fracture, the autobrake when causing danger, and thumb wheel 14 makes check band loosening to extrinsic deflection during promptly disconnected the rope, another kind is that the brake rod 15 that hanging scaffold will be contained on the check band need be parked in a certain height the time rotates, and the people becomes flexible for making check band.

Embodiment 2: on embodiment 1 basis, below on flashboard, having outside oblique guide hole 16, pilot hole on the flashboard of both sides forms " eight " font.

Claims

1, a kind of rope control driven portal frame, its composition comprises: door-shaped frame, the pair of guide rails affixed with aforementioned door-shaped frame, four groups of guide wheels along the guide rail operation, this guide wheel is fixed on the hanging scaffold, it is characterized in that: the retarding spring assembly is housed on the described hanging scaffold, on this assembly and the hanging scaffold and between the lifting flake down bonded assembly thumb wheel check band is housed, described retarding spring assembly one end has and compresses cam and compressed the depression bar of cam-controlled swing and can be pressed in flashboard on the guide rail by depression bar.

2, rope control driven portal frame according to claim 1 is characterized in that: have the splayed pilot hole on the described flashboard.

3, rope control driven portal frame according to claim 1 and 2, it is characterized in that: described compressing between cam and the described depression bar is installed with the axis of guide, has spring on the axis of guide.

4, rope control driven portal frame according to claim 1 and 2 is characterized in that: the hand brake bar that connects firmly with hanging scaffold is housed on the described check band.

5, rope control driven portal frame according to claim 3 is characterized in that: the hand brake bar that connects firmly with hanging scaffold is housed on the described check band.