CN2583067Y

CN2583067Y - Upward pressure type safety gate structure

Info

Publication number: CN2583067Y
Application number: CN 02249810
Authority: CN
Inventors: 周沛凝
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-11-21
Filing date: 2002-11-21
Publication date: 2003-10-29
Anticipated expiration: 2012-11-21

Abstract

The utility model relates to an upwards pressing type safety valve structure which belongs to the technical field of lifting machines and is applied to hanging baskets of lifting machines for building industries, quays, industrial and mining establishments, vertical transports, etc. The technical problem of the utility model is to provide a safety mechanism for preventing accidental crash of hanging baskets, and therefore, a guide post near one side of a counterweight is provided with a hanging hook rack and is hinged with a hanging hook; the back end of the guide post is connected with a pivot on the upper end of a push rod; the lower end of the push rod is connected with a pivot of a handle which is connected with a fixed pivot of the guide post; a hanging nail on the counterweight is matched and hung with hook on the front end of the hanging hook; the weight of the counterweight is required to be larger than the sum of the weight of the valve and a safety claw at the same time. When the valve is not on the upper limit position and the safety claw is blocked and can not enter the inner parts of safety lattices on both sides of a hanging basket, when the hanging basket generates accidental crash, the utility model can automatically open to the horizontal position and extend the inner parts of the safety lattices only by causing the safety claw to leave a safety lattice plate playing a safety function for preventing the hanging basket from crashing.

Description

Last pressure type safety gate structure

Technical field

The utility model relates to the lifting machinery technical field, particularly a kind of pressure type safety gate structure that goes up.

Background technology

At present, in lifting machinery such as building ground, harbour, industrial and mining enterprises' vertical transport, the flat bed safety gear of hanging basket 1 is made up of the movable secure claw 2 and the leverage thereof that are located at insurance lattice plate 4 on hanging basket two side rails and the insurance lattice 3 that form thereof, both sides, hanging basket 1 top.Behind hanging basket 1 flat bed, utilize the position of 5 pairs of secure claws 2 of gate of hanging basket 1 turnover floor to control.When gate 5 is opened, hold up secure claw 2, secure claw 2 is stretched in the insurance lattice 3, reach the anti-fall purpose of hanging basket 1, as shown in Figure 1 by leverage.When gate 5 was closed, secure claw 2 fell and resets, and left insurance lattice 3, and hanging basket 1 can move up and down, as shown in Figure 2.But because architecture storey layer position is highly different, add the lattice plate 4 of insuring certain width is arranged, behind hanging basket 1 flat bed, can not guarantee to make secure claw 2 to stretch into smoothly in the insurance lattice 3 at every turn, secure claw 2 may appear when being held up, collide with insurance lattice plate 4, stopped, can not stretch in the insurance lattice 3, as shown in Figure 3, simultaneously, the weight of present employed counterweight 6 is heavy with the weight sum of gate 5 and secure claw etc., and the keying of gate 5 is by the operator gate to be applied an external force up or down to reach.As seen, when hanging basket 1 was descending, if secure claw 2 does not also enter in the insurance lattice 3 and do not have external force and do the time spent, secure claw 2 can not hold up automatically, stretches in the insurance lattice 3, as shown in Figure 4, in this case, does not just have anti-fall safety effect.

Summary of the invention

The technical problems to be solved in the utility model provides a kind of safety gear that prevents the unexpected tenesmus of hanging basket.

Technical solution provided by the utility model is such: a kind of pressure type safety gate structure that goes up, comprise Lifting basket and two side rails thereof, this guide rail inboard is provided with row's insurance lattice plate, both sides, hanging basket top are provided with movable secure claw and leverage thereof, also comprise the gate 5 and the guidepost 7 thereof that are located at a side in the hanging basket, 12, article two, steel rope 18, an end of 19 lies in gate 5 top left-right symmetric ends respectively, its other end is walked around leading sheave group 8 respectively, 11 and 9,10, with lying in counterweight 6 tops, be fixed with hook frame 14 near on the guidepost 12 of counterweight 6 one sides, and banking pin 13 is housed in its corresponding position, hook 15 is hinged on the hook frame 14, its rear end is connected with push rod 20 upper ends by rotating fulcrum 23, push rod 20 lower ends are connected with handgrip 21 by rotating fulcrum 22, this handgrip 21 is installed on the guidepost 12 by fixed pivot 17, is fastened on the counterweight 6 with the matched clothes-hook 16 that colludes of hook 15 front ends; The weight of described counterweight 6 is greater than the weight sum of described gate 5 with secure claw.

Working process of the present utility model is such: when starting gate 5, pull handgrip 21, make push rod 20 jack-up, promote hook 15 swings, make the clothes-hook 16 that is fixed on the counterweight 6 break away from hook 15, will weigh because the weight ratio gate 5 of counterweight 6 adds the weight of secure claw, counterweight 6 is descending, by steel rope and leading sheave gate 5 is mentioned to upper limit position, realize gate opening.Hold up secure claw by gate 5 tops and leverage simultaneously, prevent the unexpected tenesmus of hanging basket.During closed shutter 5, the operator applies a downward pulling force to gate 5, makes gate 5 descending, by steel rope and leading sheave, counterweight 6 is mentioned, near going up in limited time, the clothes-hook 16 on the counterweight 6 leads by the inclined-plane in the hook 15, oppress hook 15 toward the swing of unhook direction, counterweight 6 rises in limited time, and clothes-hook 16 has been crossed and colluded point, and hook 15 resets under the effect of push rod 20 and handgrip 21 deadweights, tangle the clothes-hook 16 on the counterweight 6, realization gate 5 is closed.Simultaneously, gate 5 tops break away from leverage, secure claw is fallen reset, and hanging basket can move up and down.

Compared with prior art, the utlity model has following beneficial effect: will weigh because counterweight weight ratio gate adds the weight of secure claw, so it can keep a power that makes progress by the unidirectional self-lock effect of safety gate mechanism, hold secure claw, make secure claw trend level attitude, even secure claw is subjected to insuring stopping of lattice plate when being held up by gate, and hanging basket meets accident when dropping, still secure claw can be held up and stretches in the insurance lattice, play the anti-fall safety effect of hanging basket, guarantee production safety.

Description of drawings

Secure claw stretched into the structural representation in the insurance lattice when Fig. 1 was the gate opening that has now in the lifting machinery hanging basket.

Secure claw resetting structure scheme drawing when Fig. 2 is a closing gate shown in Figure 1.

Structural representation when secure claw was subjected to insuring the lattice plate resistance and blocks when Fig. 3 was a gate opening shown in Figure 1.

Fig. 4 is the structural representation after the secure claw of gate shown in Figure 3 leaves insurance lattice plate, and this moment, secure claw still can not stretch into the insurance lattice, lacked anti-fall safety control.

Fig. 5 is the structural representation of an embodiment of the utility model.

The specific embodiment

By following embodiment the utility model is further elaborated.

A preferred embodiment of the present utility model is referring to shown in Figure 5: a kind of pressure type safety gate structure that goes up is by gate 5,

guidepost

7,12, counterweight 6, steel rope 18 and pulley 8 thereof, 11, steel rope 19 and pulley 9 thereof, 10, hook frame 14, banking pin 13, hook 15, push rod 20 and hand anti-21 formed, and be contained in a side in the elevator basket, Lifting basket two side rails inboards respectively are provided with row's insurance lattice plate, be the insurance lattice between each lattice plate, the movable secure claw in both sides, hanging basket top is connected with gate by leverage, secure claw is sagging during closing gate, along with gate is opened rising, secure claw opens and tends to level attitude, when gate was opened to upper limit position, the both sides secure claw was just opened to level attitude.Gate 5 can move up and down along

guidepost

7 and 12, and

pulley

8,11 and 9,10 can be made the guiding movement of

steel rope

8 and 19 respectively, can do relative swing between hook 15 and the hook frame 14, matches with hook 15 in the position of clothes-hook 16.During work, counterweight 6 can be tangled by hook 15 by clothes-hook 16, connects by

fulcrum

23,22,17 respectively between hook 15, push rod 20, handgrip 21 and the guidepost 12 and can do joint motions.The weight of the weight g+ secure claw of the weight G of counterweight 6＞gate 5.During work, guarantee to rely on the deadweight of counterweight 6 can overcome the friction of this mechanism, and enough strength pull-up gates 5 are arranged, hold up secure claw.When failing that when the operator opens a sluice gate gate 5 is pushed into upper limit position, slowly open secure claw might be insured the lattice plate block and can not stretch into the insurance lattice in, when the unexpected generation of hanging basket drops, as long as leaving insurance lattice plate, will open from the trend level attitude secure claw by originally going up pressure type safety gate mechanism, stretch in the insurance lattice, play the anti-fall safety effect of hanging basket.

Claims

1, a kind of pressure type safety gate structure that goes up, comprise Lifting basket and two side rails thereof, this guide rail inboard is provided with row's insurance lattice plate, both sides, hanging basket top are provided with movable secure claw and leverage thereof, also comprise the gate (5) and the guidepost (7 thereof that are located at a side in the hanging basket, 12), article two, steel rope (18,19) a end lies in gate (5) top left-right symmetric end respectively, its other end is walked around leading sheave group (8 respectively, 11 and 9,10), with lying in counterweight (6) top, it is characterized in that: be fixed with hook frame (14) near on the guidepost (12) of counterweight (6) one sides, and banking pin (13) is housed in its corresponding position, hook (15) is hinged on the hook frame (14), its rear end is connected with push rod (20) upper end by rotating fulcrum (23), push rod (20) lower end is connected with handgrip (21) by rotating fulcrum (22), this handgrip (21) is installed on the guidepost (12) by fixed pivot (17), is fastened on the counterweight (6) with the matched clothes-hook (16) that colludes of hook (15) front end; The weight of described counterweight (6) is greater than the weight sum of described gate (5) with secure claw.