Self-adjusting balance device for lifting fireproof curtain

Abstract

The utility model provides a self-adjusting balance device for lifting a fireproof curtain, which belongs to the field of stage performance equipment and comprises a balance plate, rigging turnbuckles and connecting supports. The connecting support is mounted in the center of the top edge of the fireproof curtain, and the balance plate is connected with the connecting support through a rotating shaft; one end of the rigging turnbuckle is connected with the balance plate through a connecting pin shaft, and the other end is connected with the lifting steel wire rope; the connecting support is further provided with a pair of baffles, and when the balance plate rotates around the rotating shaft to the position where the lower edge of the balance plate makes contact with the baffles, the limiting position is achieved. And the distances between the two connecting pin shaft holes in the balance plate and the rotating shaft hole are equal. The device solves the problems that two lifting steel wire ropes for lifting an existing fireproof curtain are unequal in tensile force and inconsistent in length, so that the fireproof curtain inclines, the abrasion of a guide rail is increased, even the clamping stagnation phenomenon occurs, meanwhile, the abrasion of the steel wire ropes with large stress is increased, and the service life is shortened, ensures that the fireproof curtain does not incline and deviate, and improves the safety of the fireproof curtain. Friction of the guide rail is reduced.

Description

Technical Field

[0001] The utility model belongs to the field of stage performance equipment, and in particular relates to a self-adjusting balancing device for lifting a fire curtain at a stage entrance. Background Art

[0002] At present, fire curtains are usually lifted by two steel wire ropes connected to the top of the fire curtain. Lifting guide rails are also installed on both sides of the fire curtain. In order to reduce the friction of the guide rails, it is necessary to control the fire curtain so that it does not tilt or deflect. At the same time, in order to improve the service life of the two steel wire ropes and the lifting safety, the two steel wire ropes should be subjected to the same force, each bearing half of the weight of the fire curtain.

[0003] The traditional fire curtain lifting structure cannot adjust the lengths of the two steel ropes to be exactly the same. In addition, the elastic deformation and elongation of the two steel ropes are also different, causing the fire curtain to tilt, increase the wear of the guide rails, and even jamming. At the same time, the forces on the two steel ropes are also different, which will increase the wear of the steel rope with greater force, shorten its lifespan, and even pose a safety hazard. Utility Model Content

[0004] The utility model aims to solve the problems of unequal tension and inconsistent lengths of two lifting steel ropes for lifting the existing fire curtain, and provides a self-adjusting balancing device for lifting the fire curtain.

[0005] In order to achieve the above purpose, the technical solution adopted by the present utility model is as follows:

[0006] A self-adjusting balancing device for lifting a fire curtain, comprising a balancing plate, a rigging turnbuckle, and a connecting support;

[0007] The connecting support is installed at the center of the top edge of the fire curtain, and the balance plate is connected to the connecting support through a rotating shaft;

[0008] One end of the rigging turnbuckle is connected to the balance plate through a connecting pin, and the other end is connected to the lifting wire rope.

[0009] Furthermore, the connecting support is also provided with a pair of baffles, and when the balancing plate rotates around the rotating shaft until its lower side contacts the baffles, it is at the extreme position.

[0010] Furthermore, the two connecting pin holes on the balance plate are equidistant from the rotating shaft hole.

[0011] Due to the adoption of the above technical solution, the beneficial technical effects of the utility model are:

[0012] 1. The self-adjusting balancing device for lifting fire curtains of the utility model solves the problems of unequal tension and inconsistent length of the two lifting wire ropes of the existing fire curtain lifting, which causes the fire curtain to tilt, increases the wear of the guide rails, and even causes jamming. At the same time, the wear of the wire ropes with large force increases and the service life is shortened. It ensures that the fire curtain does not tilt or deflect and reduces the friction of the guide rails.

[0013] 2. The self-adjusting balancing device for lifting the fire curtain of the utility model applies the lever principle. The balancing plate serves as the lever and the rotating shaft serves as the fulcrum. Since the two connecting pin holes of the balancing plate are at equal distances from the rotating shaft hole, when the balancing plate rotates, the horizontal distances between the two connecting pin holes and the rotating shaft hole are also equal (, ensuring that the force arms on both sides of the lever are always equal, so the vertical tension of the wire rope on both sides of the balancing plate is always equal.

[0014] 3. The self-adjusting balancing device for lifting the fire curtain of the utility model has few parts and a simple structure, a simple manufacturing and installation process, is easy to process, and has strong operability.

[0015] 4. The two steel ropes in the self-adjusting balancing device for lifting the fire curtain of the utility model are always subjected to equal force, which prolongs the service life of the steel ropes, reduces the replacement and maintenance of the steel ropes, and makes the lifting of the fire curtain safer.

[0016] 5. Compared with the previous method of directly connecting the fire curtain with steel wire ropes, this device does not require high adjustment of the length of the two steel wire ropes. It can automatically adjust the influence of the elastic deformation and elongation of the steel wire ropes. It is only necessary to adjust the rigging turn buckle to keep the balance plate in a roughly horizontal state to ensure that the fire curtain does not tilt.

[0017] 6. Compared with the previous method of directly connecting the fire curtain with steel wire ropes, when one steel wire rope breaks, the balance plate rotates to the extreme position and stops, shortening the falling distance, thus preventing the other steel wire rope from breaking due to impact. In this state, the fire curtain can also be lifted in a short time for emergency use without causing the fire curtain to get stuck or fall. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a front view of a self-adjusting balancing device for lifting a fire curtain according to the present invention;

[0019] Figure 2 This is a side sectional view of a self-adjusting balancing device for lifting a fire curtain according to the present invention;

[0020] Figure 3 yes Figure 1 A state diagram of a self-adjusting balancing device for lifting a fire curtain when the balancing plate rotates to the limit position;

[0021] Reference numerals: 1-lifting wire rope, 2-rigging turnbuckle, 3-balancing plate, 4-connecting pin, 5-connecting support, 6-rotating shaft, 7-baffle, 8-fire curtain. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below through preferred embodiments.

[0023] Please see the attached Figure 1-3 As shown, the self-adjusting balancing device for lifting the fire curtain of this embodiment includes a balancing plate 3, a rigging turnbuckle 2, and a connecting support 5; the connecting support 5 is installed at the center of the top edge of the fire curtain 8, and the balancing plate 3 and the connecting support 5 are connected by a rotating shaft 6; one end of the rigging turnbuckle 2 is connected to the balancing plate 3 by a connecting pin 4, and the other end is connected to the lifting wire rope 1; the connecting support 5 is also provided with a pair of baffles 7, when the balancing plate 3 rotates around the rotating shaft 6 until its lower edge contacts the baffle 7, it reaches the extreme position; the two connecting pin holes on the balancing plate 3 are equidistant from the rotating shaft hole.

[0024] In this embodiment, the balance plate 3 can rotate around the rotation axis 6 within a certain range. When the balance plate 3 rotates to the point where its lower side contacts the baffle 7, it is at the extreme position (e.g. Figure 3 The length of the rigging can be manually adjusted by the rigging turnbuckle 2. This device uses the principle of lever, with the balance plate 3 as the lever and the shaft 6 as the fulcrum. The two connecting pin holes of the balance plate 3 are at the same distance from the shaft hole (i.e. Figure 1 When the balance plate 3 rotates, the horizontal distances between the two connecting pin holes and the rotating shaft 6 holes are also equal (e.g. Figure 3 The middle dimension B) ensures that the lever arms on both sides are always equal, so the vertical tension of the wire rope on both sides of the balance plate 3 is always equal.

[0025] Compared to the previous method of directly connecting steel wire ropes to the fire curtain 8, this device does not require high-level adjustment of the length of the two lifting steel wire ropes 1. Only the rigging turnbuckle 2 needs to be adjusted to keep the balance plate 3 in a roughly horizontal state to ensure that the fire curtain 8 does not tilt. As the balance plate 3 rotates around the rotation axis 6 within a certain range, it can automatically adjust the effects of the elastic deformation and elongation of the lifting steel wire ropes 1. In addition, if one lifting steel wire rope 1 breaks, the balance plate 3 of this device rotates to the extreme position and stops, shortening the falling distance, preventing the other lifting steel wire rope 1 from breaking due to impact. In this state, the fire curtain 8 can still be raised in a short time for emergency use without causing the fire curtain 8 to become stuck or fall.

[0026] The fire curtain lifting self-adjusting balancing device of this embodiment can be applied to the lifting of the proscenium fire curtain 8 and can also be applied to other stage machinery in the case of two steel rope lifting equipment.

[0027] The above description is a preferred embodiment of the present invention, which is used to explain the technical solution of the present invention. Those skilled in the art can also make routine modifications, equivalent replacements and improvements within the spirit and principles of the present invention.

Claims

1. A self-adjusting balancing device for lifting a fire curtain, characterized in that: Including balance board, rigging turnbuckle, connecting support; The connecting support is installed at the center of the top edge of the fire curtain, and the balance plate is connected to the connecting support through a rotating shaft; One end of the rigging turnbuckle is connected to the balance plate through a connecting pin, and the other end is connected to the lifting wire rope.

2. A self-adjusting balancing device for lifting a fire curtain according to claim 1, characterized in that: The connecting support is also provided with a pair of baffles, and when the balancing plate rotates around the rotating shaft until its lower side contacts the baffles, it is at the extreme position.

3. The self-adjusting balancing device for lifting the fire curtain according to claim 1 is characterized in that: The two connecting pin holes on the balance plate are at equal distances from the rotating shaft hole.

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