KR102469349B1 - Lift fall protection device - Google Patents

Abstract

The present invention relates to a lift fall prevention device, and more particularly, when a main wire is cut and a fall of the lift frame occurs, the lift frame is braked by a braking member connected to an auxiliary wire, thereby preventing an accident due to a complete fall of the lift frame. It is a technology related to a lift fall prevention device that can be prevented.
The present invention is a fixed frame formed on the inside of the lifting module;
A pair of auxiliary wires installed at both ends of the fixed frame;
A fixing bracket coupled to the elevating frame, a spring installed at one end of the fixing bracket, a pair of fixing pins formed on the outside and inside of one end of the spring, and a pair of fixing pins formed in close contact with one side of the spring and attached to the spring A pair of braking members including a clamp rotatably coupled to a fixing pin formed on an outer surface and having a stopper formed on an outer surface thereof;
It includes; a plurality of locking grooves formed on the inner surface of the guide rail.

Description

Lift fall protection device {Lift fall protection device}

The present invention relates to a lift fall prevention device, and more particularly, when a main wire is cut and a fall of the lift frame occurs, the lift frame is braked by a braking member connected to an auxiliary wire, thereby preventing an accident due to a complete fall of the lift frame. It is a technology related to a lift fall prevention device that can be prevented.

In general, a lift is a device used to lift heavy objects at construction sites and various industrial sites, and refers to a facility that can transport a lifting platform that moves up and down on a support frame and hangs a heavy object on the platform, or a structure and performance similar thereto.

In such a lift, a platform or an elevator that hangs or loads a heavy object is generally moved up and down using a chain or wire.

However, there is a problem in that the chain or wire is cut or damaged due to long-term use or malfunction and cannot function again, so that the elevator or elevator may tilt to one side or fall.

In order to solve this problem, Republic of Korea Patent Registration No. 10-0652189 "fall prevention device for work lift" is disclosed.

The prior art is a configuration in which a spring is installed in the chain connector, a gripping member moving by a hinge is provided, and the chain connector and the gripping member are connected with a connecting line and a pulley. When the chain is broken, the chain connector moves downward due to the expansion force of the compressed spring When the gripping member is lifted upward while the connecting line is pulled, the cutting groove formed in the gripping member bites one side of the H-beam and generates a braking force.

However, in the prior art, since the chain connector and the gripping member are configured separately and connected by separate connecting lines and pulleys, the number of parts increases and the configuration is not simple, resulting in poor economic efficiency, and in a situation where instantaneous braking is required There is a problem in that a malfunction may occur due to a structure configured separately.

In addition, since the incision of the gripping member is configured to brake while biting one side of the H-beam, torsion and bending deformation occur due to the load of the heavy weight acting on the gripping member, making it impossible to reuse the gripping member. There is a problem of low economic efficiency.

Republic of Korea Patent No. 10-0652189 (Announcement date 2006.12.04)

The present invention installs a pair of auxiliary wires at both ends of the fixed frame and installs a braking member on one end of the auxiliary wire, so that when the main wire is cut off, the braking member operates immediately and the stopper is caught in the locking groove formed in the guide rail. As it is possible to prevent the lift from falling, it is intended to solve a problem that may cause malfunction by a structure configured separately in a situation where instantaneous braking is required.

In addition, by installing a pair of auxiliary wires at both ends of the fixed frame and installing a pair of braking members at one end of the auxiliary wire, the load is prevented from being biased to one side, and the load is evenly divided and supported, thereby jamming the guide rail. As it can be recycled by preventing damage to the groove or stopper and clamp, torsion and bending deformation occurs due to the load of the heavy weight acting on the holding member, making it impossible to reuse the holding member and replacing it with a new one. want to solve

The problem to be solved by the present invention is not limited to the problems mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the following description.

The lift fall prevention device of the present invention for achieving the above object to be solved,

A fixed frame formed inside the lifting module;

A pair of auxiliary wires installed at both ends of the fixed frame;

A fixing bracket coupled to the elevating frame, a spring installed at one end of the fixing bracket, a pair of fixing pins formed on the outside and inside of one end of the spring, and a pair of fixing pins formed in close contact with one side of the spring and attached to the spring A pair of braking members including a clamp rotatably coupled to a fixing pin formed on an outer surface and having a stopper formed on an outer surface thereof;

It includes; a plurality of locking grooves formed on the inner surface of the guide rail.

A fixing pin formed on the outside of the spring is connected to the auxiliary wire and is in close contact with the spring by the tension of the auxiliary wire to compress the spring.

the spring,

Lift fall prevention device for rotating the clamp in the direction of the guide rail is extended when the auxiliary wire loses tension.

When the clamp is rotated in the direction of the guide rail by the spring, the stopper is caught in one of the plurality of locking grooves to prevent the elevating frame from falling.

In the present invention, a pair of auxiliary wires are installed on both sides of the main wire and at both ends of the fixed frame, and a braking member is installed on one end of the auxiliary wire, so that when the main wire is cut off, the braking member operates immediately to guide the guide rail. A stopper is caught in the formed locking groove to prevent the lift from falling.

In addition, by installing a pair of auxiliary wires at both ends of the fixed frame and installing a pair of braking members at one end of the auxiliary wire, the load is prevented from being biased to one side, and the load is evenly divided and supported, thereby jamming the guide rail. Recycling may be possible by preventing grooves or stoppers and clamps from being damaged.

1 is a front view showing a lift in which a lift fall prevention device according to an example of the present invention is installed.
Figure 2 is a left side view of Figure 1;
Figure 3 is a front view showing a lift fall prevention device according to an example of the present invention.
FIG. 4 is a cross-sectional view taken along line A'-A' in FIG. 3;
FIG. 5 is a cross-sectional view taken along line B'-B' of FIG. 3;
6 is a front view showing a state in which the clamp of the lift fall prevention device of FIG. 3 is rotated in the direction of the guide rail and the stopper is caught in the locking groove to brake.
7 is an enlarged view showing a state in which the stopper is caught in the locking groove in an enlarged manner.

Prior to describing the embodiments of the present invention in detail, it should be noted that the embodiments of the present invention are provided to completely explain the present invention to those skilled in the art.

Therefore, the claims of the present invention are not limited by the following examples and drawings.

In addition, the drawings in this specification are intended to clearly understand the description by reference to the drawings, so there are some exaggerated parts. Therefore, there may be differences between the drawing shown in the present invention and the actual product.

Hereinafter, the present invention will be described with reference to the drawings. However, after a general description of the lift fall prevention device with reference to FIGS. 1 and 2 so that the description of the present invention can be concise and clear, the soup pouch cutting device using an air blaster with reference to FIGS. 1 to 7 The components are explained in detail.

The lift fall prevention device 1 according to an example of the present invention is an auxiliary wire when the main wire 81 connecting the support frame 50 and the elevating frame 60 is damaged or cut and the elevating frame 60 falls. By braking the elevation frame 60 by the braking member 30 connected to (20), it is possible to prevent an accident caused by a complete fall of the elevation frame 60.

As such, the lift fall prevention device 1 includes a fixing frame 10, an auxiliary wire 20, a braking member 30, and a locking groove 40.

Hereinafter, components constituting the lift fall prevention device 1 will be described in detail with reference to FIGS. 1 to 7 .

The lift fall prevention device 1 may be formed in a lift that lifts and descends by hanging a heavy object.

Referring to FIG. 1, the lift in which the lift fall prevention device 1 is installed raises and lowers the support frame 50 and the support frame 50 including a pair of guide rails 51 facing each other to lift a heavy object. The lifting frame 60 and the lifting frame 60 drive the lifting module 80 connecting the lifting frame 60 and the support frame 50 and the lifting frame 60 so that the support frame 50 moves up and down. A winch module 70 may be included.

The support frame 50 and the elevating frame 60 may be connected by an elevating module 80 .

A winch module 70 for driving the elevating frame 60 is installed in the middle of the support frame 50, and a main pulley installed inside the winch module 70 and a main wire 81 wrapped around the outside of the main pulley can be installed. The main wire 81 may be installed to surround the main pulley and extend upward to surround the first auxiliary pulley 81 formed on the upper side of the support frame 50 . The main wire 81 may be installed to surround the second auxiliary pulley 83 formed inside the elevating module 80 by extending downward after wrapping the first auxiliary pulley 81, and the second auxiliary pulley 83 ) The wrapped wire extends upward again and can be fixed by being caught on a fixing hook 85 formed on one side of the first auxiliary pulley 81 . Therefore, the main wire 81 can move the lifting frame 60 up and down based on the power provided from the winch module 70 .

A fixed frame 10 may be formed inside the elevation module 80 . A second auxiliary pulley 83 is formed in the fixing frame 10, and the main wire 81 is wrapped around and installed outside the second auxiliary pulley 83.

A pair of auxiliary wires 20 may be installed at both ends of the fixed frame 10 . A pair of auxiliary wires 20 may have one end fixed to the fixed frame 10 and installed.

A pair of auxiliary wires 20 may be connected to a spring 33 to be described later and installed to maintain a constant tension.

The auxiliary wire 20 may lose the compressive force applied to the spring 33 compressed by the fixing pin 35 to be described later as tension is lost when the main wire 81 is cut.

A braking member 30 may be installed at one end of the pair of auxiliary wires 20 . The braking member 30 can prevent the elevating frame 60 from falling when the main wire 81 is cut.

The braking member 30 may include a fixing bracket 31, a spring 33, a pair of fixing pins 35, and a clamp 37.

The fixing bracket 31 is a middle part of the elevating frame 60 and may be coupled to the rear. The fixing bracket 31 may be fixed by combining a spring 33 and a clamp 37 to be described later.

A spring 33 may be installed at one end of the fixing bracket 31 . The spring 33 can be maintained in a compressed state by a pair of fixing pins 35 to be described later when the lift is operating normally, and when the main wire 81 is cut, the pair of fixing pins 35 The compressive force is lost and can be stretched.

In addition, when the compressive force of the fixing pin 35 is lost and the spring 33 is extended, the clamp 37 installed in close contact with the spring 33 can be rotated in the direction of the guide rail 51 of the support frame 50.

Fixing pins 35 may be installed on the outer and inner sides of one end of the spring 33, respectively. Among the pair of fixing pins 35, the fixing pin 35 installed outside the spring 33 may be connected to the auxiliary wire 20.

The fixing pin 35 can cause the spring 33 to be compressed or stretched. That is, the fixing pin 35 is the outer fixing pin 35 of the spring 33 connected to the auxiliary wire 20 is moved in the direction of the fixing pin 35 on the inside by the tension of the auxiliary wire 20 will be pressed. It can and thus, a pair of fixing pins 35 apply a compressive force to the spring 33 so that the spring 33 is compressed.

After all, the pair of fixing pins 35 can be said to be a configuration for adjusting the compression and extension of the spring 33 .

A clamp 37 may be coupled to the fixing pin 35 installed outside the spring 33 .

The clamp 37 may be installed in close contact with one side of the spring 33 and rotatably coupled to the fixing pin 35 . Therefore, when the clamp 37 is formed in close contact with one side of the spring 33 and the spring 33 is extended, the clamp 37 can be rotated by a predetermined value in the direction of the guide rail 51 by the spring 33. have.

The clamp 37 may be formed in a semi-arc shape. A stopper 371 may be formed on an outer surface of the clamp 37 . The stopper 371 may be formed to correspond to the shape of the locking groove 40 formed inside the guide rail 51 to be described later and protrude by a predetermined value from the outer surface of the clamp 37 in one direction.

The stopper 371 may be caught in the locking groove 40 when the clamp 37 is rotated in the direction of the guide rail 51 by the spring 33 . Therefore, when the lift frame 60 falls due to the cutting of the main wire 81, the stopper 371 is caught in the locking groove 40 to prevent the lift frame 60 from completely falling. have.

A plurality of locking grooves 40 may be formed inside the guide rail 51 . The locking groove 40 may be formed in the shape of a concave groove in which the flat surface inside the guide rail 51 is concave to one side by a certain amount.

The stopper 371 described above may be caught in the locking groove 40 . That is, when the main wire 81 is cut and the tension of the auxiliary wire 20 is lost, the compressive force applied to the spring 33 by the pair of fixing pins 35 is lost, and the spring 33 is extended to clamp ( 37) is rotated in the direction of the guide rail 51, the stopper 371 is caught in any one of the plurality of locking grooves 40, and thus the elevating frame 60 This is to prevent a complete fall.

Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art to which the present invention pertains can be implemented in other specific forms without changing the technical spirit or essential features of the present invention. you will be able to understand Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive.

1: Lift fall arrest device
10: fixed frame
20: auxiliary wire
30: braking member 31: fixing bracket
33: spring 35: fixing pin
37: clamp 371: stopper
40: catch groove
50: support frame 51: guide rail
60: lifting frame
70: winch module 71: main pulley
73: main wire
80: lifting module 81: first auxiliary pulley
83: second auxiliary pulley 85: fixed hook

Claims (4)

A support frame including a pair of guide rails facing each other, an elevating frame for lifting a heavy object by elevating and descending the support frame, and an elevating module connecting the elevating frame and the support frame so that the elevating frame elevates and descends the support frame. In the fall prevention device installed in the lift including the winch module for driving the elevating frame,
A fixed frame 10 formed inside the lifting module;
A pair of auxiliary wires 20 installed at both ends of the fixing frame 10;
A fixing bracket 31 coupled to the elevating frame, a spring 33 installed at one end of the fixing bracket 31, and a pair of fixing pins formed on the outside and inside of one end of the spring 33, respectively ( 35) and the clamp 37 formed in close contact with one side of the spring 33 and rotatably coupled to the fixing pin 35 formed outside the spring 33 and having a stopper 371 formed on the outer surface A pair of braking members 30 comprising;
A lift fall prevention device including a plurality of locking grooves 40 formed on the inner surface of the guide rail. According to claim 1,
The fixing pin 35 formed on the outside of the spring 33 is connected to the auxiliary wire 20 and is in close contact with the spring 33 by the tension of the auxiliary wire 20 to compress the spring 33. lift fall arrest device. The method of claim 2, wherein the spring 33,
The lift fall prevention device for rotating the clamp 37 in the direction of the guide rail by elongating when the auxiliary wire 20 loses tension. According to claim 3,
The stopper 371 is caught on one of the plurality of locking grooves 40 when the clamp 37 is rotated in the guide rail direction by the spring 33, thereby preventing the lift frame from falling. prevention device.

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