CN212024581U - Mechanical interlocking safety device for elevator - Google Patents

Abstract

The utility model discloses a chain safety device of machinery for lift, including main hanging wheel, main hanging wheel sets up in the upper portion center department of cage, the cage top is equipped with the hoisting wire rope who connects the hauler, hoisting wire rope connects main hanging wheel, main hanging wheel top is equipped with vice hanging wheel, and vice hanging wheel from inside to outside near the hoisting wire rope who connects one side, vice hanging wheel rotates and connects in the upset pole upper end, upset pole right side below extends and the lower part rotates the angle bar of connection at the cage top, upset pole upper portion coupling spring one, spring one end right side below extends and fixes in cage upper end edge. The utility model overcomes prior art shortcoming, it is rational in infrastructure, increased the chain safety device of machinery on the cage on the basis of the safety device is prevented weighing down in the installation, utilize steel sheet gib head and steel sheet to end the shelves and hang the cage and block on the horizontal web member of guide rail frame, play the effect of multiple protection.

Description

Mechanical interlocking safety device for elevator

Technical Field

The utility model relates to an engineering safety technical field specifically indicates a mechanical interlocking safety device for lift.

Background

The hoist elevator, the portal frame and other hoisting equipment driven by the motor use a hoist steel wire rope to drive the suspension cage to vertically transport goods on the sliding track. If the steel wire rope is broken or the winch is braked and fails in the operation process of the equipment, the suspension cage full of goods can drop rapidly from the height of dozens of meters to hundreds of meters, and great accidents and property loss can be caused.

In order to avoid such accidents, manufacturers generally install anti-falling safety devices of construction elevators sold in the market. The anti-falling device mainly comprises an eccentric clamping wheel, a guide wheel, a pinion, a rack, a spring, a supporting shaft, a supporting plate, a support and the like, and is structurally characterized in that the anti-falling device is eccentrically locked.

The working principle of the falling protector is that the falling of an object in a free falling state is utilized. When the lifting steel wire rope of the construction elevator is broken suddenly and the cage is weightless and falls down to move in a free falling body, the spring is made to bounce to move the rack, the pinion is driven, the eccentric clamping wheel is driven to act, and the guide rail is clamped tightly, so that the purpose of braking the cage is achieved. After the steel wire rope is repaired, when the hoisting machine lifts the cage again, the eccentric clamping wheel can be automatically released, the tightening state is relieved, the cage returns to normal, and the cage can be put into normal operation again.

The anti-falling safety device of the construction elevator needs to check the fastening piece once per week in the using process, and particularly, the large shaft of the eccentric wheel cannot be loosened; the surface of the anti-falling device is cleaned by diesel oil once every half month, and the movable parts are lubricated by 30# mechanical oil without grease. If the operator does not pay attention to maintenance, the falling protector can easily fail. The cage falling accident caused by the breakage of the steel wire rope occurs for many times in the construction site. Therefore, in view of the above problems, it is desirable to improve the conventional safety device of the elevator to ensure the safety of workers.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome prior art shortcoming, provide an elevator is with chain safety device of machinery, rational in infrastructure, increased the chain safety device of machinery on the cage on the basis of the safety device is prevented weighing down in the installation, prevent weighing down the safety device and be the automatic guide rail of hugging closely, automatic chain safety device utilizes steel sheet gib head and steel sheet to end the shelves and hang the cage and block on the horizontal web member of guide rail frame, plays the effect of multiple protection.

In order to solve the technical problem, the utility model provides a technical scheme does: a mechanical interlocking safety device for an elevator is characterized in that a main hoisting wheel is arranged at the center of the upper portion of a cage, a hoisting steel wire rope connected with a traction machine is arranged above the cage, the hoisting steel wire rope is connected with the main hoisting wheel, an auxiliary hoisting wheel is arranged above the main hoisting wheel, the auxiliary hoisting wheel is close to the hoisting steel wire rope connected with one side from inside to outside, the auxiliary hoisting wheel is rotatably connected to the upper end of a turnover rod, the turnover rod extends towards the lower right side and the lower portion of the turnover rod is rotatably connected with an angle iron at the top of the cage, the upper portion of the turnover rod is connected with a first spring, the other end of the first spring extends towards the lower right side and is fixed at the edge of the upper end of the cage, a second spring and a third spring with two different heights are arranged below the turnover rod, the left ends of the second spring and the third spring are fixed at the upper portion of the, the safety hook is characterized in that the middle of the safety hook is rotatably connected with the suspension cage, the other end of the lower end fixing spring III is connected with the upper end of the hook part of the safety hook, the upper end of the hook part of the safety hook is connected with the center shaft of the auxiliary suspension wheel through a first steel wire rope, the right side of the suspension cage is close to the edge and is provided with a safety baffle, the upper third part of the safety baffle is rotatably connected with the suspension cage, the lower third part of the safety baffle is connected with the lower end of the turnover rod through a second steel wire rope, the upper end of.

Furthermore, the auxiliary hoisting wheels and the main hoisting wheels are arranged in the same vertical plane, and can keep synchronous rotation during lifting without deviation and dislocation.

Furthermore, the lower third part of the turnover rod is rotatably connected with an angle iron.

Furthermore, a first spring is connected to the upper third of the turnover rod.

Furthermore, the opening of the safety hook faces to the horizontal web member of the guide rail frame outside the suspension cage, and the safety hook extends out and hooks when the steel wire rope is broken, so that the damage caused by falling is reduced.

Furthermore, the right end stretches out the cage outside when safety shield is horizontal, stretches out the horizontal web member that can catch on cage outside guide rail frame, prevents the direct tenesmus when other safety failures.

Compared with the prior art, the utility model the advantage lie in: the utility model discloses well lift has increased mechanical chain safety device afterwards, when the wire rope fracture causes the cage weightlessness to take place, including original safety device that prevents weighing down, three kinds of safety measure can realize the effect of braking the cage simultaneously, the emergence of major incident has been avoided greatly, reduce casualties accident, protect property, avoid because of the cage accident of falling appears in the wire rope fracture, the security performance has obtained great promotion, be building site, the indispensable safety arrangement of industrial and mining enterprise vertical transportation machinery, suitable extensive using widely.

Drawings

Fig. 1 is a schematic structural diagram of the present invention in a normal operation state.

Fig. 2 is a schematic structural view of the hoisting steel wire rope in a fracture state.

As shown in the figure: 1. the lifting device comprises a main lifting wheel, 2 auxiliary lifting wheels, 3 steel wire ropes, 4 safety hooks, 5 springs, 6 springs, 7 springs, 8 springs, 9 springs, 10 safety baffles, 11 lifting cages, 12 lifting steel wire ropes and 13 overturning rods.

Detailed Description

In the description of the present invention, it is to be understood that the terms "center", "lateral", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified. Furthermore, the term "comprises" and any variations thereof is intended to cover non-exclusive inclusions.

The present invention will be described in further detail with reference to the accompanying drawings.

When the utility model is implemented specifically, the mechanical interlocking safety device for the elevator comprises a main hanging wheel 1, wherein the main hanging wheel 1 is arranged at the upper center of a hanging cage 11, a hoisting steel wire rope 12 connected with a traction machine is arranged above the hanging cage 11, the hoisting steel wire rope 12 is connected with the main hanging wheel 1, an auxiliary hanging wheel 2 is arranged above the main hanging wheel 1, the auxiliary hanging wheel 2 is close to the hoisting steel wire rope 12 connected with one side from inside to outside, the auxiliary hanging wheel 2 and the main hanging wheel 1 are arranged in the same vertical plane, the auxiliary hanging wheel 2 is rotatably connected with the upper end of a turnover rod 13, the turnover rod 13 extends to the lower right and the lower part is rotatably connected with angle iron at the top of the hanging cage 11, the lower third part of the turnover rod 13 is rotatably connected with the angle iron, the upper third part of the turnover rod 13 is connected with a first spring 5, the upper part of the turnover rod 13 is connected with a first spring 5, the other end of the first spring 5 extends to the right and is fixed, the two springs 6 and the spring three 7 with different heights are arranged below the turnover rod 13, the left ends of the two springs 6 and the spring three 7 are fixed on the upper portion of the suspension cage 11, the right end of the spring two 6 is fixed at the lower end of the turnover rod 13, the upper end of the suspension cage 11 is provided with a safety hook 4 close to the edge, the middle portion of the safety hook 4 is rotatably connected with the suspension cage 11, the other end of the spring three 7 is fixed at the lower end, the opening of the safety hook 4 faces to a horizontal web member of a guide rail frame outside the suspension cage 11, the upper end of the hook portion of the safety hook 4 is connected with a central shaft of the auxiliary suspension wheel 2 through a first steel wire rope 3, the right side of the suspension cage 11 is provided with a safety baffle 10 close to the edge, the upper third portion of the safety baffle 10 is rotatably connected with the suspension cage 11, the lower third portion of the lower portion of, when the safety baffle 10 is horizontal, the right end extends out of the cage 11, and the spring IV 9 extends upwards and is fixedly connected with the cage 11.

The utility model discloses a theory of operation: under the condition that the hoisting steel wire rope 12 is normally not broken, the hoisting steel wire rope 12 is stressed, the auxiliary hoisting wheel 2 is pulled to be close to the main hoisting wheel 1, and then the safety hook 4 is pulled up through the first steel wire rope 3; meanwhile, the second steel wire rope 8 is not stressed, the fourth spring 9 pulls the safety baffle 10 to stand up, and the suspension cage 11 is attached to the main chord of the guide rail frame to normally move up and down.

After the hoisting steel wire rope 12 is suddenly broken, the hoisting steel wire rope 12 is not stressed, the safety hook 4 rapidly falls to the guide rail frame (the right side of the suspension cage 11) under the action of the tension of the spring III 7 and hooks the horizontal web member of the guide rail frame, so that accidents caused by rapid falling of the suspension cage are prevented. Meanwhile, under the action of the first steel wire rope 3, the first spring 5 and the second spring 6, the auxiliary hoisting wheel 2 is far away from the main hoisting wheel 1, meanwhile, the auxiliary hoisting wheel support pulls the safety baffle 10 through the second steel wire rope 8 to enable the safety baffle to be in a horizontal position rapidly, and the front end of the safety baffle 10 is supported on a horizontal web member of the guide rail support to prevent the suspension cage from sliding downwards continuously.

Under the simultaneous action of the safety hook 4 and the safety baffle 10, after the steel wire rope is broken, the suspension cage can be rapidly fixed on the guide rail frame, and cannot fall to the ground all the time, so that safety accidents occur; and the elevator is safer due to the action of the anti-falling safety device.

The present invention and the embodiments thereof have been described above, but the description is not limited thereto, and the embodiment shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should understand that they should not be limited to the embodiments described above, and that they can design the similar structure and embodiments without departing from the spirit of the invention.

Claims (6)

1. The utility model provides an elevator is with chain safety device of machinery, includes main hanging wheel (1), main hanging wheel (1) sets up in the upper portion center department of cage (11), cage (11) top is equipped with hoisting wire rope (12) of connecting the hauler, main hanging wheel (1), its characterized in that are connected in hoisting wire rope (12): the lifting device is characterized in that an auxiliary lifting wheel (2) is arranged above the main lifting wheel (1), the auxiliary lifting wheel (2) abuts against a lifting steel wire rope (12) connected with one side from inside to outside, the auxiliary lifting wheel (2) is rotatably connected to the upper end of an overturning rod (13), the overturning rod (13) extends towards the lower right and the lower part of the overturning rod rotates to be connected with angle iron at the top of the lifting cage (11), a first spring (5) is connected to the upper part of the overturning rod (13), the other end of the first spring (5) extends towards the lower right and is fixed at the edge of the upper end of the lifting cage (11), a second spring (6) and a third spring (7) with two different heights are arranged below the overturning rod (13), the left ends of the second spring (6) and the third spring (7) are fixed at the upper part of the lifting cage (11), the right end of the second spring (6) is fixed at the lower end of the overturning rod (, safety hook (4) middle part is rotated and is connected cage (11), and the other end of lower extreme fixed spring three (7), vice hanging wheel (2) center pin is connected through wire rope (3) to safety hook (4) hook portion upper end, cage (11) right side is close to the edge and is equipped with safety shield (10), safety shield (10) upper portion third department rotates and connects cage (11), upset pole (13) lower extreme is connected through wire rope two (8) in safety shield (10) lower part third department, four (9) lower extreme of safety shield (10) upper end connecting spring, four (9) of spring upwards extend and fixed connection cage (11).

2. The mechanical interlocking safety device for the elevator as claimed in claim 1, wherein: the auxiliary hoisting wheels (2) and the main hoisting wheels (1) are arranged in the same vertical plane.

3. The mechanical interlocking safety device for the elevator as claimed in claim 1, wherein: the lower third part of the turning rod (13) is rotatably connected with an angle iron.

4. The mechanical interlocking safety device for the elevator as claimed in claim 1, wherein: the spring I (5) is connected to one third of the upper part of the turnover rod (13).

5. The mechanical interlocking safety device for the elevator as claimed in claim 1, wherein: the opening of the safety hook (4) faces to the horizontal web member of the guide rail frame outside the suspension cage (11).

6. The mechanical interlocking safety device for the elevator as claimed in claim 1, wherein: when the safety baffle (10) is horizontal, the right end extends out of the outer side of the suspension cage (11).

Images