KR102504093B1 - Industrial lift with fall prevention function - Google Patents

Abstract

The present invention relates to an industrial lift having a fall prevention function, and more particularly, to an industrial lift in which a carriage carrying cargo is driven to be raised and lowered in a frame structure, which is installed vertically on both sides at a predetermined interval, and has a length A vertical beam in which fall-prevention holes are formed at regular intervals along the direction, and a moving frame having both ends installed in a horizontal direction between the vertical beams on both sides and moving up and down along the longitudinal direction of the vertical beam, and an upper end of the moving frame An elevating cylinder fixed to one side of the frame and sliding the movable frame up and down, a fixed frame having both ends fixed in a horizontal direction at a predetermined height on both sides of the vertical beam, and one end fixed to the fixed frame and a transfer connection portion including a chain having a chain fixed to the carrier through a sheave extending to the other side and fixed to one side of the moving frame, and a locking pin is installed on one side of the carrier, so that the chain is short-circuited If it is, it further includes a fall prevention part for fixing the locking pin to the fall prevention hole, wherein the fall prevention part has a rotating pulley rotatably coupled to one side of the frame structure, and one end is fixed to the frame structure, A connecting wire whose other end extends to one side of the carrier through the rotary pulley, and is installed on one side of the carrier, and is moved laterally toward the fall prevention ball by an elastic repulsive force, but directly down on one side including a locking pin having an insertion hole formed therein, and a fixing pin fixed to the other end of the connection wire and inserted into the insertion hole; Separated from the inside, one end is fixed into the anti-fall hole formed in the vertical beam by the elastic repulsive force of the locking pin.
According to the present invention as described above, even if the chain on one side supporting the carrier is short-circuited, the locking pin is immediately fixed to the vertical beam, thereby preventing the carrier from falling in a physical way, so that a major accident does not occur in the field. In addition, the operation of the lift cylinder can be automatically stopped by sensing with an electronic sensing method that the lock pin is released by the limit switch grounded on the other side of the lock pin, and the other side is automatically stopped by the additional operation of the lift cylinder. There is an effect of making maintenance and repair very easy in the future by preventing the chain from breaking together.
In addition, by roping the leveling wire on both sides of the carrier, even if the chain on one side falls and the carrier fails to maintain level and falls downward, the carrier does not swing to both sides due to the tension of the leveling wire and maintains the level stably to some extent. It has the effect of improving work stability by allowing the cargo inside the carrier not to fall downward.

Description

Industrial lift with fall prevention function {Industrial lift with fall prevention function}

The present invention relates to an industrial lift having a fall prevention function, and more particularly, even if a chain that raises and lowers a carrier is broken, a locking pin is immediately fixed to a vertical beam, and the carrier is lifted by the tension of a leveling wire. It relates to an industrial lift having a fall prevention function that allows a stable level to be maintained without being rocked to both sides.

An industrial elevator is installed in a construction site of a high-rise building or a large-scale tool to move people or cargo. The hoist (4) for moving the hoist (2), the guide rail (5) for guiding the movement of the hoist (2), the counterweight (6) installed to reduce the load on the hoist (4), the hoist (2) and the counter weight ( 6), an emergency stop device 7 for forcibly stopping the elevator platform 2 when it descends abnormally, and a speed governor 8 that controls the operation of the emergency stop device 7. It is composed by

As an example, the emergency stop device as shown in FIG. 2 includes a wedge W, a driving breaker 9a, a driven breaker 9b, a hinge shaft 9c, an interlocking link (not shown), and a driving link 9e ), a rope socket (9f), a damper spring (9g), and a main block (9h) composed of a number of components, guide rail that guides the movement of the platform (2) when it descends at a certain speed or higher By gripping 5 strongly, the descent of the platform 2 is forcibly stopped.

However, as described above, since the emergency stop device of an industrial elevator is designed to stop the platform 2 by strongly gripping the guide rail 5, excessive frictional force occurs between the emergency stop device 7 and the guide rail 5. Doing so may cause malfunction.

In addition, the above emergency stop device includes a wedge (W), a driving breaker (9a), a driven breaker (9b), a hinge shaft (9c), an interlocking link, a driving link (9e), a rope socket (9f), a damper spring (9g) ) and a main block 9h, etc., so that the structure is complicated and it is not easy to manufacture each part.

In addition, it is a structure in which an emergency stop is made after the platform (2) falls at 30 m/min or more without immediate response when the wire rope for hoisting is damaged. There were many problems in applying the elevator emergency stop device that takes a long time as it is.

In order to solve this problem, referring to FIG. 3 of Korean Patent Publication No. 2011-10665, when the lift descends, the detent 22 releases the coupling with the chain 40 by the solenoid 21, The rotation of the chain gear 31 rotating in engagement with the chain 40 is read through the speed sensor 32, and when a rotational speed faster than the average speed is detected, the power of the solenoid 21 is cut off and coupled with the solenoid 21. By making the detent 22 coupled with the chain 40, the lift malfunction or the wire rope is damaged during descent, but the fall prevention measures by detecting this speed, as in the prior art, In fact, it is not an immediate response to an accident by binding it, so the lift can lose its balance and the cargo inside the lift can fall, which makes it somewhat difficult to prevent safety accidents in advance. There is no method, and moreover, there is always a risk of sensor malfunction due to an error in electronic equipment.

Therefore, it overcomes the irrationality of the fall prevention method of the conventional industrial lift, and even if the lift falls for various reasons, the lift can quickly stop without falling, and the lift does not shake and is stably leveled. There is an increasing demand for industrial lifts with a fall prevention function that can be used.

Korean Patent Publication No. 2011-10665

The present invention has been made to solve the above problems, and an object of the present invention is to physically install a locking pin on a vertical beam of the frame structure when a carrier that goes up and down inside the frame structure of an industrial lift crashes. It is forcibly inserted to prevent a fall.

Another object of the present invention is to rop the leveling wire on both sides of the carrier so that even if a chain on one side of the carrier is broken, the carrier can be stably maintained horizontally without easily swinging to both sides.

According to one aspect of the present invention for achieving the above object, in an industrial lift that drives a carrier for transporting cargo to move up and down in a frame structure, it is installed vertically on both sides at a predetermined interval, and A vertical beam in which fall prevention holes are formed at regular intervals according to the vertical beam, both ends are installed in the horizontal direction between the vertical beams on both sides, and a moving frame that moves up and down along the longitudinal direction of the vertical beam, and the upper end of the moving frame An elevating cylinder fixed to one side and sliding the moving frame up and down, a fixed frame having both ends fixed in a horizontal direction on a line of a predetermined height on both sides of the vertical beam, and one end fixed to the fixed frame, A transfer connection portion including a chain extending to the other side and fixedly installed on one side of the moving frame, the other end of which is fixed to the carrier, and a locking pin installed on one side of the carrier, When the chain is short-circuited , Further comprising a fall prevention unit for fixing the locking pin to the fall prevention hole, wherein the fall prevention unit includes a rotation pulley rotatably coupled to one side of the frame structure, one end of which is fixed to the frame structure, and the rotation A connecting wire passing through a pulley and extending the other end to one side of the carrier, installed on one side of the carrier, and moved laterally toward the fall prevention ball by elastic repulsive force, inserted directly downward into one side A locking pin on which a ball is formed, and a fixing pin fixed to the other end of the connecting wire and inserted into the insertion hole, when the chain is broken, the carrying tool falls while the fixing pin is inserted into the insertion hole. Separated, one end of the locking pin is fixed into the anti-fall hole formed in the vertical beam by an elastic repulsive force.

In addition, the fall prevention unit has a through hole formed so that the locking pin passes through in the lateral direction, and is fixed to the lower end of the carrier, and a case in which a step is formed inward along a circular arc at one end of the through hole, and the lock A support ring fixedly installed on the outside of the pin, a coil spring having one end supported by the step and the other end supported by the support ring, the locking pin passing through and stored inside the through hole, and the locking pin being inserted A through hole is formed and further includes a fixing cap fixed to the other end of the through hole, and when the fixing pin is detached from the inside of the insertion hole, the support ring is pressed by the elastic repulsive force of the coil spring to fix the fixing cap. It is closely supported on one end of the cap.

In addition, the chain is installed at both ends of the fixing frame, the fall prevention unit is installed at both sides of the carrier, and both ends of each locking pin are exposed to the outside of the case, so that one end of each locking pin is Further comprising first and second limit switches inserted into the insertion hole and contacting the other end of each locking pin, and an operation control unit for driving the lift cylinder according to the contact state of the first and second limit switches. Accordingly, the operation control unit stops the driving of the lift cylinder when it is determined that any one of the first and second limit switches is released from contact.

Furthermore, the rotating pulley is spaced apart from the vertical beam at a predetermined interval and is installed to be rotatably installed on one side of the sheave, and one end of the connecting wire is fixed to the fixed frame, passes through the rotating pulley, and the other end is one of the carriers. The connection wire extending to the side and extending downward from the rotary pulley passes through at least one idle roller installed on one side of the lower part of the carrier so that the connection wire is guided to the fall prevention hole formed in the vertical beam. It is provided to further include an anti-interference wire guide portion that is guided directly downward toward the insertion hole of the lock pin.

In addition, a leveling wire having one end fixed to the upper ceiling surface of the frame structure and extending downward to one side of the carrier, a first guide roller installed on the upper end of one side of the carrier, and an upper end of the other side of the carrier Including a second guide roller installed on, the leveling wire passes from the ceiling of the frame structure to the lower side of the first guide roller and extends downward past the upper side of the second guide roller, the frame structure It is provided by further including a horizontal holding part fixed to the bottom surface of the.

Further, a tension adjusting device installed on the bottom surface of the frame structure is coupled to an end of the leveling wire to adjust the tension of the leveling wire.

Moreover, the leveling unit is installed on both sides of the carrier.

According to the present invention as described above, even if the chain on one side supporting the carrier is short-circuited, the locking pin is immediately fixed to the vertical beam, thereby preventing the carrier from falling in a physical way, so that a major accident does not occur in the field. In addition, the operation of the lift cylinder can be automatically stopped by sensing with an electronic sensing method that the lock pin is released by the limit switch grounded on the other side of the lock pin, and the other side is automatically stopped by the additional operation of the lift cylinder. There is an effect of making maintenance and repair very easy in the future by preventing the chain from breaking together.

In addition, by roping the leveling wire on both sides of the carrier, even if the chain on one side falls and the carrier fails to maintain level and falls downward, the carrier does not swing to both sides due to the tension of the leveling wire and maintains the level stably to some extent. It has the effect of improving work stability by allowing the cargo inside the carrier not to fall downward.

1 is a view showing the configuration of a conventional general industrial elevator.
2 is a view of an emergency stop device of a conventional industrial elevator.
3 is a view briefly showing a fall prevention device for an industrial lift according to conventional Korean Patent Publication No. 2011-10665.
4 and 5 are views schematically showing the front and rear structures of an industrial lift having a fall prevention function according to the present invention.
6 is a view showing the side cross-sectional structure of an industrial lift having a fall prevention function according to the present invention.
7 is a view schematically showing the front structure of an industrial lift having a fall prevention function according to the present invention.
8 is a view schematically showing the structure of a leveling unit installed in an industrial lift having a fall prevention function according to the present invention.

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

4 and 5 are views schematically showing the front and rear structures of an industrial lift having a fall prevention function according to the present invention, and FIG. 6 is a view showing a side cross-sectional structure of an industrial lift having a fall prevention function according to the present invention. 7 is a view schematically showing the front structure of an industrial lift having a fall prevention function according to the present invention.

Referring to the drawings, the industrial lift having a fall-prevention function according to the present invention is driven so that the carrier (A) on which cargo transport or workers can ride is raised and lowered in the frame structure 100 formed in the vertical direction, In the present invention, it is configured to include a vertical beam 110, a moving frame 120, an elevation cylinder 130, a fixed frame 140, a transfer connection unit 200 and a fall prevention unit 300.

The vertical beam 110 serves as a main body on both sides of the frame structure 100, is spaced apart from both sides at a predetermined interval, is installed to a certain length so that the carrier A moves up and down in the vertical direction, and is a vertical beam that comes into contact with the carrier A. On one side of 110, fall prevention holes 111 are formed at regular intervals along the longitudinal direction.

The moving frame 120 is installed so that both ends are inserted between the vertical beams 110 on both sides, and moves up and down along the longitudinal direction of the vertical beam 110, as shown in the drawing, of the vertical beam 110 made of H-beams. Both ends of the moving frame 120 are inserted into the inner surface, and are slid upward and downward while being in contact with the inner surface of the vertical beam 110 by rollers.

The lifting cylinder 130 has a lower end fixed to the bottom surface of the frame structure 100 so as to move the moving frame 120 up and down, and has an upper end on one side of the moving frame 120, that is, the moving frame 120. ) is fixed to the lower surface of the

Both ends of the fixing frame 140 are fixed to the vertical beams 110 on both sides in the horizontal direction on a certain height line of the vertical beam 110.

The transfer connection part 200 connects the carrier A to be moved up and down from the frame structure 100, one end is fixed to the fixed frame 140 and the other side extends to the upper side of the moving frame 120, drawing It passes through the sheave 210 fixed to the lower surface of the moving frame 120 and includes a chain 220 whose other end extends downward and is fixed to the carrier A. These transfer connection units 200 are installed at both ends of the fixed frame 140, so that the carrier A moves up and down while the chain 220 moves along the sheave 210 by the elevation of the elevator cylinder 130. do.

The fall prevention unit 300 allows the locking pin 350 installed on one side of the carrier A to be inserted and fixed into the fall prevention hole 111 by the short circuit of the chain 220, so that the carrier A falls downward prevent it from happening The fall prevention unit 300 includes a rotating pulley 310, a connecting wire 320, a fixing pin 390, a case 330, a locking pin 350, a support ring 360, a coil spring 370, and a fixing It is configured to include a cap 380.

The rotation pulley 310 is installed to be rotatable on one side of the frame structure 100, and the rotation pulley 310 in the present invention is spaced apart from the vertical beam 110 at a predetermined interval to freely rotate on one side of the sheave 210 installed to enable

The connecting wire 320 is fixed to the frame structure 100. In the present invention, one end of the connecting wire 320 is fixed to the fixed frame 140, extends upward, passes through the rotary pulley 310, and then downward again. The other end of the connection wire 320 extends to one side of the carrier (A).

The fixing pin 390 is fixed to the other end of the connection wire 320 and is inserted into the locking pin 350 to be described later to control the locking pin 350 to be moved forward by the elastic repulsive force.

The case 330 is installed in a direction corresponding to the vertical beam 110 at the lower end of the carrier A, and a through hole 340 is formed to the inside so that the locking pin 350 passes through in the transverse direction. In addition, a step 341 protrudes inward along a circular arc from one end side of the through hole 340 .

The locking pin 350 is inserted into the through hole 340 inside the case 330, and has a predetermined length so that both ends of the locking pin 350 are exposed to the outside of the case 330. One end of this locking pin 350 is moved back and forth in the transverse direction toward the fall prevention hole 111, and an insertion hole 351 is formed on one side directly downward, so that the fixing pin 390 is inserted into the insertion hole 351. ) is inserted.

The support ring 360 is fixed to the outer surface so as to surround the outer periphery of the locking pin 350 .

The coil spring 370 is accommodated inside the through hole 340 by allowing the locking pin 350 to penetrate inwardly, and one end of the coil spring 370 is supported by the step 341, and the The other end is supported by the support ring 360 so that the coil spring 370 is compressed and relaxed within the step 341 and the support ring 360 by the forward and backward movement of the locking pin 350 .

The fixing cap 380 has a through hole 381 into which the locking pin 350 is inserted, and is fixed to the other end of the through hole 340. 370 is supported so as not to escape to the outside of the through hole 340 by elasticity.

In this way, in the normal carriage lifting operation, the locking pin 350 is pushed backward and the coil spring 370 is elastically pressed by the support ring 360, and the fixing pin 390 is inserted into the insertion hole of the locking pin 350. (351) to be inserted inside.

If the chain 220 is short-circuited, while the carrier A is dropped, the connecting wire 320, one end of which is fixed to the fixing frame 140, is pulled, and the fixing pin fixed to the other end of the connecting wire 320. 390 is separated from the inside of the insertion hole 351 of the locking pin 350.

In addition, as the locking pin 350 is separated from the fixing pin 390, the elastic restoring force of the coil spring 370 is transmitted forward along the through hole 340, so that one end of the locking pin 350 is the fall prevention hole 111. ) is closely grounded on one side of the vertical beam 110 on which it is formed, and while the carrier A is dropped downward by breaking the chain 220, the locking pin 350 is the length of the vertical beam 110. After pressing and sliding downward along the direction, it is inserted and fixed into the anti-fall hole 111 formed at the bottom.

Accordingly, the carrier A that has fallen can be maintained without falling by the physical fixation of the locking pin 350 .

In other words, in the present invention, when the chain 220 supporting the carrier A is broken, the connecting wire 320 fixed in the same way as the chain 220 is also separated from the carrier A, and connected. The locking pin 390 fixed to the end of the wire 320 is separated from the inside of the locking pin 350, and the locking pin 350 is immediately formed in the vertical beam 110 by a physical method Fall prevention hole 111 to be fixed on the inside.

Moreover, the chain 220 is installed on both ends of the fixing frame 140, the fall prevention unit 300 is installed on both sides of the carrier A, and one end of each locking pin 350 is installed on both sides of the vertical beam ( 110) to be inserted into each insertion hole 351.

In addition, according to the contact state of the first and second limit switches 410 and 420 and the first and second limit switches 410 and 420 contacting the other end of each locking pin 350, the elevating cylinder 130 Further including an operation control unit 500 for controlling the driving operation, the locking pin 350 is moved by a physical movement operation of the locking pin 350 by the break of the chain 220 on one side, and the first and second limit switches ( The operation control unit 500 determines that one of the locking pins 410 and 420 is separated from the locking pin 350 and the operation of the lift cylinder 130 is stopped.

In this way, the present invention allows the carrier (A) to stop on a line of a certain height of the vertical beam 110 without falling by physical operation of the chain 220 on one side, and the locking pin 350 It is recognized by the electronic sensing method that contact is released from the first and second limit switches 410 and 420 due to physical motion, so that the operation of the lift cylinder 130 is automatically stopped, and the chain 220 on the other side by additional motion Also, make it very easy to maintain later.

In addition, this connecting wire 320 is located directly above the locking pin 350, so that the fixing pin 390 is immediately separated, but it is most ideal, by the lifting and lowering operation of the carrier A, the connecting wire 320 ) Interference occurs between the vertical beams 110, and there is a risk of being cut, so that the connection wire 320 is installed at a certain distance between the carrier A and the vertical beam 110.

To this end, in the present invention, the rotating pulley 310 on which the connecting wire 320 is roped is spaced apart from the vertical beam 110 at a predetermined interval and installed on one side of the sheave 210 so as to be able to freely rotate, so that the connecting wire 320 is It extends away from the vertical beam 110 downward on both sides of the pulley.

Moreover, at least one idle roller 610 is provided on one side of the lower part of the carrier A so that the connecting wire 320 extending downward to the carrier A through the rotary pulley 310 is guided back to the fall prevention hole 111. ) is installed so that the end of the connection wire 320 is guided directly downward toward the insertion hole 351 of the locking pin 350 while the connection wire 320 is roped along the idle roller 610. Wire for preventing interference It is configured to further include an induction unit 600.

8 is a view schematically showing the structure of a leveling unit 700 installed in an industrial lift having a fall prevention function according to the present invention. In the present invention, the leveling unit 700 is further installed in the carrier A. Thus, even if the chain 220 on one side is damaged and falls off in an instant, the leveling unit 700 assists the front and rear sides of the carrier A to be somewhat level even if the carrier A drops sharply.

This leveling unit 700 has one end fixed to the upper ceiling surface of the frame structure 100, a leveling wire 710 extending downward to one side of the carrier A, and one side of the carrier A. The first guide roller 720 installed on the top, that is, the top of the front side of the inlet side of the carrier (A), and the second guide roller 720 installed on the top of the other side of the carrier (A), that is, the top of the front opposite the entrance of the carrier (A) Including 730, the horizontal holding wire 710 extends downward from the ceiling of the frame structure 100, passes through the lower part of the first guide roller 720 and extends toward the second guide roller 730, , is roped so as to extend downward again through the upper side of the second guide roller 730, and the other end is fixed to the bottom surface of the frame structure 100.

In addition, a tension adjusting device 740 installed on the bottom surface of the frame structure 100 is further included, so that the other end of the leveling wire 710 is bound to the tension adjusting device 740 so that the first and second guide rollers 730 ) Adjust the tension of the leveling wire 710 roped to the bottom surface of the front and rear sides of the carrier (A) to maintain a horizontal state.

In addition, the leveling unit 700 is installed separately on both sides of the vertical beam 110, even if the chain 220 on one side is broken, the tension of the leveling wire 710 roped to both sides of the carrier (A) As a result, the carrier A can be kept in a horizontal state without being easily tilted.

As described above, in the present invention, even if the chain 220 hanging the carrier A is broken, the locking pin 350 is immediately moved and fixed on the line of a certain height of the vertical beam 110, and the horizontal Due to the tension of the holding wire 710, the carrier A can be stably maintained horizontally without swinging to both sides.

Although the present invention has been described with respect to the preferred embodiments mentioned above, various modifications and variations are possible without departing from the spirit and scope of the invention. Accordingly, the scope of the appended claims will include such modifications and variations as fall within the scope of this invention.

100: frame structure 110: vertical beam
111: fall prevention ball 120: moving frame
130: lift cylinder 140: fixed frame
200: transfer connection 210: sheave
220: chain
300: fall prevention unit 310: rotary pulley
320: connecting wire 330: case
340: through hole 341: step
350: locking pin 351: insertion hole
360: support ring 370: coil spring
380: fixed cap 381: through hole
390: fixing pin
410: first limit switch 420: second limit switch
500: motion control unit
600: wire guide for preventing interference 610: idle roller
700: leveling unit 710: leveling wire
720: first guide roller 730: second guide roller
740: tension control device

Claims (7)

In an industrial lift that drives a conveyor for transporting cargo to move up and down in a frame structure,
Vertical beams installed vertically on both sides at regular intervals and having fall prevention holes formed at regular intervals along the longitudinal direction;
a moving frame having both ends installed in a horizontal direction between the vertical beams on both sides and moving up and down along the longitudinal direction of the vertical beam;
an elevating cylinder having an upper end fixed to one side of the movable frame and sliding the movable frame up and down;
a fixing frame whose both ends are fixed in a horizontal direction at a predetermined height on both sides of the vertical beam;
a transfer connection unit including a chain having one end fixed to the fixed frame, extending to the other side, passing through a sheave fixed to one side of the moving frame, and having the other end fixed to the carrier;
A locking pin is installed on one side of the carrier and further includes a fall prevention unit for fixing the locking pin to the fall prevention hole when the chain is short-circuited ,
The fall prevention unit
A rotating pulley rotatably coupled to one side of the frame structure;
A connecting wire having one end fixed to the frame structure and the other end extending to one side of the carrier through the rotation pulley;
A locking pin installed on one side of the carriage, moved in a transverse direction toward the fall prevention hole by an elastic repelling force, and having an insertion hole formed on one side thereof in a direct downward direction;
Doedoe fixed to the other end of the connection wire, including a fixing pin inserted into the insertion hole,
When the chain is broken, the fixing pin is separated from the inside of the insertion hole while the carrier falls, and one end of the locking pin is fixed inside the fall prevention hole formed in the vertical beam by an elastic repulsive force. Industrial lift with fall prevention function.
According to claim 1,
The fall prevention unit
A through hole is formed so that the locking pin passes through in the transverse direction, and the case is fixedly installed at the lower end of the carrier, and a step is formed inward along a circular arc at one end of the through hole;
A support ring fixedly installed outside the locking pin;
A coil spring through which the locking pin is passed through and accommodated inside the through hole, one end of which is supported by the step and the other end is supported by the support ring;
A through hole into which the locking pin is inserted is formed and further includes a fixing cap fixed to the other end of the through hole,
An industrial lift having a fall prevention function, characterized in that when the fixing pin is separated from the inside of the insertion hole, the support ring is pressed by the elastic repulsive force of the coil spring and closely supported on one end of the fixing cap.
According to claim 2,
The chains are installed at both ends of the fixing frame, the fall prevention units are installed at both sides of the carrier, and both ends of each locking pin are exposed to the outside of the case, so that one end of each locking pin is inserted into the insertion hole. inserted inside,
first and second limit switches respectively contacting the other ends of the respective locking pins;
Further comprising an operation control unit for driving the lifting cylinder according to the contact state of the first and second limit switches,
The industrial lift having a fall prevention function, characterized in that the operation control unit stops the driving of the lifting cylinder when it is determined that any one of the first and second limit switches is released from contact.
According to claim 3,
The rotating pulley is spaced apart from the vertical beam at a predetermined interval and is installed to be freely rotatable on one side of the sheave, and one end of the connection wire is fixed to the fixed frame, and passes through the rotating pulley to have the other end to one side of the carrier extended,
The connection wire extending downward from the rotary pulley passes through at least one idle roller installed on one side of the lower part of the carrier so that the connection wire is guided to the anti-fall hole formed in the vertical beam, and the connection wire passes through the insertion hole of the lock pin. An industrial lift having a fall prevention function, characterized in that it further comprises a wire guide for preventing interference to be guided directly downward toward the.
According to claim 4,
A horizontal holding wire having one end fixed to the upper ceiling surface of the frame structure and extending downward to one side of the carrier;
A first guide roller installed on the top of one side of the carrier;
Including a second guide roller installed on the top of the other side of the carrier,
The leveling wire passes through the lower side of the first guide roller from the ceiling of the frame structure and extends downward through the upper side of the second guide roller, further comprising a leveling portion fixed to the bottom surface of the frame structure. An industrial lift having a fall prevention function, characterized in that.
According to claim 5,
The industrial lift having a fall prevention function, characterized in that it further comprises a tension adjusting device installed on the bottom surface of the frame structure, the end of the leveling wire is bound to adjust the tension of the leveling wire.
According to claim 6,
The leveling unit is an industrial lift having a fall prevention function, characterized in that installed on both sides of the carriage.

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