CN203781564U

CN203781564U - Safety lock

Info

Publication number: CN203781564U
Application number: CN201420102768.5U
Authority: CN
Inventors: 王喜军
Original assignee: ZHONGJI LIANHE INDUSTRY TECHNOLOGY (BEIJING)CO Ltd
Current assignee: Ficont Industry Beijing Co Ltd
Priority date: 2014-03-08
Filing date: 2014-03-08
Publication date: 2014-08-20
Anticipated expiration: 2024-03-08

Abstract

The utility model relates to a safety lock which is used on a hanging basket or a lifter working aloft. The safety lock comprises an integrated unlocking device, a main support plate, a rope locking spring, a speed measuring wheel, a rope clip support plate, a rope clip, a rope locking swing arm, a driven wheel and a limiting wheel, wherein the unlocking device pushes the rope clip and the rope clip support plate through a driving board, and meanwhile, a rope locking arm drives a roller to be locked on the rope locking swing arm to unlock the safety lock; due to conversion of stressing directions, the safety lock is in a stable unlocking state, and the mistaken locking phenomenon is avoided; at the same time, the speed measuring wheel of the safety lock is fixed on the main support plate, can only rotate and cannot move, and the driven wheel tightly presses a steel wire rope onto the speed measuring wheel; and in order to prevent the phenomenon that the steel wire rope drives the driven wheel to move and is separated from the speed measuring wheel, the safety lock is provided with the limiting wheel located below the driven wheel, so that when the steel wire rope deflects at the lower end of the safety lock, acting force can be applied to the limiting wheel, the driven wheel can continuously and tightly press the steel wire rope onto the speed measuring wheel, and the stability and reliability of the speed measuring wheel are realized.

Description

A kind of safety lock

Technical field

The utility model relates to a kind of safety device in aloft work and jacking equipment field, particularly a kind of safety lock for high-lift operation hanging cradle or elevator.

Background technology

Aloft work is the high work of a kind of danger, therefore requires the hanging basket of aloft work or elevator to have perfect safety prevention measure.And safety lock is the hanging basket of aloft work or the safety device of elevator indispensability, it is the safety device that the hanging basket of aloft work or elevator hypervelocity are implemented braking while declining.

The safety lock generally adopting at present both at home and abroad drives centrifugal block for clutch use by fifth wheel, and fifth wheel can transverse shifting to compress steel rope, when speed exceedes certain limit, centrifugal block for clutch use triggers tripper, then rope clamp clamping steel wire rope.Although this device is widely used, its drawback is that the device of restriction rope clamp mistake lock is unstable, often produces the phenomenon of mistake lock, simultaneously can transverse shifting due to fifth wheel, and cause centrifugal block for clutch use to trigger tripper also unstable, there is defect.

Summary of the invention

The purpose of this utility model is to solve above-mentioned prior art defect, provides a kind of simple in structure, and restriction rope clamp device is stable, and fifth wheel is reliable and stable, and without transverse shifting, centrifugal block for clutch use center is fixed, and stablizes release, solves the safety lock of the problem of by mistake locking.

The technical scheme providing according to the utility model, safety lock comprises the tripper of one, main support plate, lock rope spring, fifth wheel, rope clamp support plate, rope clamp, the swing arm of lock rope, flower wheel and position-limited wheel.Wherein tripper promotes rope clamp and rope clamp support plate by drive plate, and lock rope arm drives roller locked in the swing arm of lock rope simultaneously, to reach safety lock release, owing to being subject to the conversion of force direction, ensures that safety lock is in stable released state, avoids locking phenomenon by mistake and occurs.

Meanwhile, the fifth wheel of safety lock is fixed on main support plate, can only rotate and can not move, and flower wheel is pressed on steel rope on fifth wheel.While having avoided like this fifth wheel to move, drive centrifugal block for clutch use to move together, can not stablize actv. and trigger the swing arm of lock rope.For avoiding steel rope to drive flower wheel to move, be separated from fifth wheel, below flower wheel, safety lock is furnished with position-limited wheel, and when steel rope is offset in safety lock lower end, application force can be applied on position-limited wheel, ensure that flower wheel continues steel rope to be pressed on fifth wheel, realize the reliable and stable of fifth wheel.

Centrifugal block for clutch use is fixed on and gets rid of on piece base, and around getting rid of the rotation of piece base two ends, getting rid of piece base center is fixed on fifth wheel, get rid of the fixed range of piece spring by setting, limit distance and speed that centrifugal block for clutch use is opened, ensure that the fifth wheel of safety lock only reaches after corresponding rotating speed, just can open centrifugal block for clutch use, trigger the swing arm of lock rope, locked steel rope.

Brief description of the drawings

Fig. 1 is the utility model Facad structure schematic diagram;

Fig. 2 is the utility model construction profile schematic diagram;

Fig. 3 is the utility model reverse side structural representation;

Fig. 4 is the utility model reverse side axle side structure schematic diagram;

Front view when Fig. 5 is the utility model lock rope form state;

Reverse view when Fig. 6 is the utility model lock rope form state;

Fig. 7 is the structural representation of the utility model tripper;

Wherein: 1, main support plate; 2, tripper; 3, lock rope spring; 4, rope clamp support plate; 5, rope clamp; 6, fifth wheel; 7, position-limited wheel; 8, rotating shaft 1; 9, rotating shaft 2; 10, flower wheel support plate; 11, flower wheel; 12, preloading spring; 13, hanging scroll; 14, lock rope swing arm; 15, retracing spring; 16, centrifugal block for clutch use; 17, get rid of piece spring; 18, get rid of piece base; 19, lock rope pretension spring; 20, lock rope pin; 21, spacing bearing pin; 22, guide plate

2a, handle; 2b, lock rope arm; 2c, roller; 2d, actuating arm; 2e, reinforcement pins; 2f, main shaft.

Detailed description of the invention

Below in conjunction with drawings and Examples, detailed description of the invention of the present utility model is described in further detail.Following examples are only for the technical solution of the utility model is more clearly described, and can not limit protection domain of the present utility model with this.

As shown in Figure 1, in the present embodiment, rope clamp 5 is limited in upper and lower rope clamp support plate 4, rope clamp support plate 4 is fixed on main support plate 1 by rotating shaft 8, and can 8 rotate up and down around the shaft, and rope clamp 5 is along with the rotation of rope clamp support plate 4 moves up and down, do the action of opening and closing simultaneously, while opening, ensure the smooth and easy operation of steel rope, closed rear locking steel wire rope.Lock rope spring 3 one end hang on hanging scroll 13, and one end hangs on rope clamp support plate 4, to ensure rope clamp support plate 4 fast driving rope clamp 5 locking steel wire ropes.

Fifth wheel 6 is arranged on main support plate 1, is positioned at the lower end of rope clamp 5.Flower wheel 11 is fixed on flower wheel support plate 10, and 9 rotates around the shaft with flower wheel support plate 10, and preloading spring 12 is pressed on flower wheel 11 on fifth wheel 6.Fifth wheel 6 self only can sway, and can not laterally move, and it is reliable and stable that guarantee is tested the speed.Position-limited wheel 7 is housed below flower wheel 11, while ensureing that steel rope moves to flower wheel 11 lateral deviations in safety lock exit, flower wheel 11 and fifth wheel 6 can not separated, and in the time that steel rope moves to fifth wheel 6 lateral deviations, because fifth wheel 6 is fixing, can not transverse shifting, steel rope can contact with fifth wheel 6 tightly, flower wheel 11 can compress steel rope under the effect of preloading spring 12, so again ensure fifth wheel 6 measure accurate with respect to the speed of steel rope.

As shown in Fig. 2, Fig. 3, Fig. 4 and Fig. 7, in the present embodiment, tripper 2 is arranged on main support plate 1, and the actuating arm 2d in this device contacts with rope clamp support plate 4, turning handle 2a, drive actuating arm 2d by main shaft 2f, and actuating arm 2d promotes rope clamp support plate 4 and rope clamp 5 moves downward, to open safety lock.In tripper 2, there are lock rope arm 2b and roller 2c, in the time that handle 2a turns to respective angles, lock rope arm 2b drives roller 2c to rotate together with main shaft 2f, and roller 2c is stuck with the swing arm 14 of lock rope, thereby having limited rope clamp support plate 4 and rope clamp 5 upward movements, is released state that safety keeps.

As shown in Figure 7, tripper 2 comprises handle 2a, lock rope arm 2b, roller 2c, actuating arm 2d, reinforcement pins 2e and main shaft 2f.Wherein handle 2a, lock rope arm 2b and actuating arm 2d are all fixed on main shaft 2f above, and actuating arm 2d is in a certain angle with lock rope arm 2b.Safety lock is in the time of released state, and lock rope arm 2b driving rolls 2c clamping stagnation is in the swing arm 14 of lock rope, and actuating arm 2d restriction rope clamp support plate 4 and rope clamp 5 move.And rope clamp support plate 4 is finally converted into roller 2c for lock rope swing arm 14 strength vertically upward for the thrust of actuating arm 2d, and the swing arm 14 of lock rope is not in the time being subject to horizontal force, can keep the locking state for tripper 2.Reinforcement pins 2e couples together upper and lower two actuating arm 2d, plays the booster action to actuating arm 2d, and guarantee actuating arm 2d, ensures normally to work without distortion at long-time higher load condition.

Under normal working, along with steel rope moves in safety lock, can drive fifth wheel 6 to rotate, centrifugal block for clutch use 16 and get rid of piece base 18 can be along with fifth wheel rotates together, and centrifugal block for clutch use 16 can outwards open respectively centered by getting rid of piece base 18 two ends, getting rid of piece spring 17 limits centrifugal block for clutch use 16 and outwards opens, the rotating speed that is fifth wheel must reach certain requirement, just be enough to open centrifugal block for clutch use 16, and trigger and lock rope swing arm 14, open the restriction of tripper 2 to rope clamp support plate 4 and rope clamp 5, make safety lock fast lock rope.When centrifugal block for clutch use 16 opens, for lock rope, swing arm 14 applies certain transverse force, makes the swing arm 14 of lock rope overcome the restriction of retracing spring 15, on main support plate 1, rotates around a bit, opens rapidly tripper 2.Under lock rope swing arm 14 normal conditions, contact with spacing bearing pin 21, and under the effect of retracing spring 15, be pressed on spacing bearing pin 21, to ensure the locked tripper 2 of lock rope swing arm 14.Guide plate 22 is installed on centrifugal block for clutch use 16, the maximum opening angle of restriction centrifugal block for clutch use 16, the initial fixed range of piece spring 17 between two centrifugal block for clutch use 16 got rid of in setting, the fifth wheel that ensures safety lock only reaches after corresponding rotating speed, just can open centrifugal block for clutch use, trigger the swing arm of lock rope, locked steel rope.

Safety lock also comprises lock rope pin 20 and lock rope preloading spring 19.In Fig. 3 example, press lock rope pin 20, it can promote the swing arm 14 of lock rope and rotate, and opens tripper 2, makes safety lock lock rope.Lock rope preloading spring 19 ensures that lock rope pin 20 can not trigger the swing arm 14 of lock rope under normal condition, avoids occurring to lock phenomenon by mistake.

The above is only optimal way of the present utility model; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the utility model know-why; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.

Claims

1. a safety lock, comprise tripper, main support plate, lock rope spring, fifth wheel, rope clamp support plate, rope clamp, the swing arm of lock rope, centrifugal block for clutch use, get rid of piece spring, get rid of piece base, flower wheel and position-limited wheel, it is characterized in that tripper promotes rope clamp and rope clamp support plate by drive plate, lock rope arm drives roller locked in the swing arm of lock rope simultaneously, fifth wheel is fixed on main support plate, can only rotate and can not move, flower wheel is pressed on steel rope on fifth wheel.

2. safety lock according to claim 1, is characterized in that, below flower wheel, being furnished with position-limited wheel.

3. safety lock according to claim 1, is characterized in that comprising that the tripper of one, this device comprise handle, lock rope arm, roller, actuating arm, reinforcement pins and main shaft.

4. safety lock according to claim 1, centrifugal block for clutch use is fixed on and gets rid of on piece base, and around getting rid of the rotation of piece base two ends, gets rid of piece base center and be fixed on fifth wheel, gets rid of the fixed range of piece spring by setting, realizes the specific scope that tests the speed of safety lock and sets.