KR20150106619A - Safety device for tower-crane - Google Patents

Abstract

The present invention allows a driver to easily and conveniently identify work for connection between a hosting hook and an refloating object by being installed on a hoisting block of a tower crane, and prevents accidents by supplying sufficient light for work for the combination and separation of the object by lightening the hoisting hook during night work. According to the present invention, a safety device for a tower crane includes the hoisting block and hoisting hook, elevated depending winding and unwinding movements of a hoisting rope of the tower crane; an image photographing part placed and fixed in the left side of the hoisting block and transmitting an image signal to a driver room of the crane by being turned on and off according to a control signal delivered from the outside; a lighting lamp installed in the right side of the hoisting block to perform a lighting function depending on the application of power; and a power generator which is installed in the right side of the hoisting block, includes a drive shaft which rotates with frictional force by coming in contact with the hoisting rope, when the hoisting rope is wound and unwound upward and downward, and supplies power, generated from the rotation of the drive shaft, to the image photographing part and the light lamp.

Description

SAFETY DEVICE FOR TOWER-CRANE

[0001] The present invention relates to a tower crane safety device, and more particularly, to a tower crane safety device, in which a video image pickup section and an illumination lamp are disposed in a hoisting block close to a hoisting hook to which a hoisting rope is connected, The present invention relates to a tower crane safety device having improved structure to prevent a safety accident in a process of a driver in a tower crane cab by supplying electric power to a video shooting part and an illumination lamp by generating electric power.

Generally, a construction crane is installed and operated by a tower crane to transport various kinds of equipment such as rebars required for construction to a target point.

The major components of the tower crane are a mast that is vertically raised from the ground, a jib that is horizontally installed horizontally and horizontally above the mast, a trolley that horizontally moves on the jib and a hook block that is connected to the trolley, The hook is horizontally moved together with the trolley, and the cab is provided at the lower part of the jib to carry the lifted water while vertically moving.

Although such a tower crane visually recognizes the operation of connecting the wire or band type binding member connected to the hook to the hook in a cab located at a high position, the tower crane performs a work such as a structure such as a hook block or the like Other obstacles can cause a safety accident in the course of work due to the occurrence of a blind spot where the operator can hardly see the work site with eyes.

Therefore, a tower crane hook down monitoring camera system was developed to install a camera on a tower crane or a trolley to check the connection status of the hook and the lifted object in the cabin through the camera.

For example, a camera on a trolley horizontally moving on a jib of a tower crane, a tower crane pilot located in a high cab, The position, and the surrounding situation of the tower crane can be grasped securely through the image of the video monitor, so that the tower crane can be controlled more safely and conveniently.

As a prior art related to this, as disclosed in Korean Registered Utility Model No. 20-0191025 entitled " image monitoring apparatus of a tower crane "(registered on May 22, 2000), a CCTV mounted on a trolley horizontally moving on a jib of a tower crane A camera; A camera controller electrically connected to the CCTV camera and installed in a cab of the tower crane and controlling a zoom operation of the CCTV camera; And a video monitor installed in a cab of the tower crane and receiving a video signal of a subject photographed by the CCTV camera to display the video signal.

In such a tower crane hook-down monitoring camera system, a camera is mounted on a trolley, and a camera and a controller of a cab are received by the transmission cable of the camera.

Therefore, the transmission cable has been installed in the following manner, since the transmission cable must be loosened or folded as the trolley moves close to or away from the cab.

A cable support wire is installed as long as the length of the jib ejbe, a cable hanger is attached to the cable support wire, and a transmission cable is hung under the cable hanger. Here, the cable hanger is configured to move on the cable support wire using a pulley.

However, in the down-monitoring camera system of such a tower crane, when a cable hanger using a dredge is installed to hang the transmission cable as described above, there are the following problems.

When the camera installed in the trolley moves away from the cab and then comes close again, the last hanging cable hanger moves while pushing several cable hangers simultaneously pushing the front hanging cable hanger sequentially, And the cable hangers hanging on the front side are not constant, the rear cable hangers may hit or collapse the front cable hangers, causing the cable hangers not to be in the correct position and to be lifted or twisted.

Therefore, when the cable hanger is pulled and moved by the transmission cable, the cable hanger is easily broken, and the transmission cable is frequently twisted or broken Problem occurred.

Particularly, since the pulleys are used, the pulleys are easily worn by friction, the problem that the cable supporting wires are caught by the pulleys, the gap between the cable hangers becomes insufficient, and the transmission cables are twisted.

As a prior art for overcoming this, as disclosed in Korean Patent Registration No. 10-1311873 entitled " Tower Crane Hook Downward Monitoring Camera System "(Registered Date: 2103.09.17), a camera or a camera A transmission cable for transmitting a video signal from the camera to a monitor, a cable support wire for guiding the transmission cable, and a plurality of tubular members slidably fitted on the cable support wire and having a predetermined length, Wherein the plurality of tubular members each have a fixing portion at a lower portion thereof and a transmission cable is fixed to the fixing portion, the tubular member being cylindrical in shape with both ends open, and both ends being flat The end portions of the adjacent tubular members are brought into contact with each other in a plane, Wherein the tubular member is slidably received within the tubular member so that only the cable support wire slidably fits inside the tubular member when the trolley of the tower crane is moved away from the cab and then again, The member moves in contact with the tubular member positioned in front while moving while pushing the tubular member sequentially.

In addition, the height of the tower crane and the ground is considerable during the daytime work, so even if the camera is zoomed in to the work site on the ground where the actual work is performed using the camera disposed on the jib or trolley, In addition to being difficult to identify the operator, high-quality cameras are costly because they are expensive to overcome.

On the other hand, the existing tower crane places the illumination lamp on the jib to illuminate the work site during the night work, but since the distance from the cab to the work site on the ground is higher than about 50m from the ground in the high- The illuminance of the illumination lamp is lowered, and it is difficult for the operator to perceive the actual work site visually.

Korean Registered Utility Model No. 20-0191025 "Image monitoring apparatus of a tower crane" (registered on May 22, 2000) Korean Registered Patent No. 10-1311873 entitled "Tower Crane Hook Downward Monitoring Camera System" (Registered on Mar. 2103, 210)

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a camera and an illumination lamp for a hook block of a tower crane, The tower crane operator can easily grasp the on-the-ground situation on the ground by using the security means of the camera or the illumination lamp and the generator in the hook block by providing the generator that performs the power generation function by using the frictional force generated by contact with the rope. And to provide a safeguard device for a power crane whose structure is improved so as to reduce power consumption.

According to an aspect of the present invention, there is provided a hoisting machine including a hoisting block and a hoisting hook which are operated to move up and down according to hoisting and hoisting operations of a hoisting rope below a trolley of a tower crane, An image capturing unit that is turned on and off according to a control signal to transmit a photographed image signal to a driving room of a tower crane; an illuminating lamp mounted on the hoisting block and performing a light emitting function downward when power is applied; A generator which is disposed in the hoisting block and has a drive shaft which is rotated by frictional force in contact with the hoisting rope during the lifting and lowering operation of the hoisting rope and supplies electricity generated by the rotation of the drive shaft and generated electricity to the image- .

The hoisting block may further include a weight member having a weight corresponding to the left and right weight deviation values of the image capturing unit, the illuminating lamp, and the generator, respectively, and mounted on the lightest one of left and right sides of the hoisting block.

The hoisting block may further include a protective case having a weight corresponding to the left and right weight deviation values of the image capturing unit, the illuminating lamp, and the generator, and disposed to surround the outside of the image capturing unit.

The hoist rope is disposed on the outer side of the pulley member so as to always contact the outer circumferential surface of the pulley member, and guides the hoisting rope to the pulley member side. Roller.

According to another aspect of the present invention, there is provided a hoisting machine comprising: a hoisting block and a hoisting hook, which are operated to move up and down according to hoisting and hoisting operations of a hoisting rope below a trolley of a tower crane; The on / off operation is performed in response to a control signal transmitted from the outside, and the photographed video signal is wirelessly transmitted to the driving room of the tower crane And an image photographing unit.

Another characteristic feature of the present invention is that a hoisting block and a hoisting hook, which are operated to move up and down according to hoisting and hoisting operations of a hoisting rope at a lower side of a trolley of a tower crane, and a power source of a built- And an illumination lamp that performs a light emission function to the lower side and is turned on and off by an operation control signal transmitted from the outside.

 The present invention supplies electric power generated by the frictional force with the hoisting rope to the video shooting unit or the illumination lamp disposed inside the hoisting block as in the preceding embodiments, And has the following beneficial effects.

First, since the wireless image information transmitted from the image capturing unit can be outputted as an image on a monitor, even if the camera is not a high-priced high-quality camera, It has an advantage that can be easily grasped.

Secondly, the illuminating lamp of the present invention can clearly identify the connection operation between the hoisting hook and the hoisting hook during night work, and recognizes the light emission of the illuminating lamp by the ground workers located on the lower side of the tower crane, It is possible to easily grasp the position of the hoisting hook and the hoisting block in order to prevent the safety accident.

Thirdly, according to the present invention, the weight member having the weight corresponding to the left and right weight deviation values of the hoisting block is mounted on the left side of the hoisting block, thereby adjusting the left and right balances of the hoisting block, It is possible to prevent the uneven wear phenomenon of the sheave.

Fourthly, the protective case of the present invention is configured in the form of a box that surrounds the outside of the image capturing unit, and functions to protect the image capturing unit from impacts or foreign substances transmitted from the outside, and also has an advantage of adjusting the left / right balance of the hoisting block Respectively.

Fifth, the present invention is advantageous in that when a video shooting unit or an illumination lamp of a type having a self-built-in battery is disposed in a hoisting block without a generator, a battery is frequently replaced, but a generator can be omitted.

1 is a view showing an embodiment of a tower crane safety device according to the present invention.
2 is a perspective view showing a generator of the present invention.
3 is a view showing a state in which the weight member of the present invention is mounted on a hoisting block;
4 is a view showing a state where the protective case of the present invention is mounted on a hoisting block;
5 is a view showing another embodiment of a tower crane safety device according to the present invention.
6 is a view showing another embodiment of a tower crane safety device according to the present invention.

The present invention is mounted on a hoisting block of a tower crane so that a driver can easily and easily grasp a connection operation between a hoisting hook and a lifted object in a cab, thereby preventing a safety accident.

1 to 4, a first embodiment of a tower crane safety device according to the present invention comprises a hoisting block 50 which is operated to move up and down according to a hoisting and hoisting operation of a hoisting rope 70 of a tower crane, A hoisting block 60 which is arranged to be fixed on the left side of the hoisting block 50 and is turned on and off according to a control signal transmitted from the outside to transmit photographed video signals to the cab 20 side of the tower crane An illumination light 200 mounted on the right side of the hoisting block 50 and performing a light emission function when the power is applied to the hoisting block 50; And has a drive shaft which is rotated by frictional force in contact with the hoisting rope 70 during lifting and winding operation of the hoisting rope 70. The electric power generated and generated during rotation of the drive shaft is transmitted to the image pickup unit 100 and the illumination light 200 side It consists of a class generator 300.

Here, the tower crane includes a tower mast 10, which is the same as the conventional one, and is installed so that a cab 20 is provided at an upper portion of the tower mast 10, and a jib 30 A trolley 40 which horizontally moves on the lower side of the jib 30 and a trolley 40 which is horizontally moved from the lower side of the trolley 40 to a lower end of the trolley 40. [ And a hoisting block (50) and a hoisting hook (60) which are moved up and down according to the operation of the rope (70).

The image capturing unit 100 is disposed on the inner left side of the hoisting block 50. For example, the image capturing unit 100 has a function of wirelessly transmitting image information photographed using a camera to the cabin 20 side of the tower crane, The camera lens is directed toward the sting hook 60 so that the connection operation state where the hoisting hook 60 is connected to the hoisting hook 60 and the scene conditions around the hoisting sheath can be photographed.

Here, in the cabin 20, the wireless image information transmitted from the image capturing unit 100 can be output as an image to the monitor. Therefore, even if the camera is not an expensive high-quality camera, So that the user can easily grasp the work situation.

At this time, the image capturing unit 100 may include an image relay device (e.g., an antenna bridge) in the trolley 40 to wirelessly transmit the image information to the cabin 20, And then transmits the image information to the cabin 20 side, thereby performing the function of giving the directionality at the time of image transmission.

The illuminating lamp 200 is mounted to the right side of the hoisting block 50 and is illuminated by a power source supplied from the outside to supply illumination to the lower hoisting hook 60.

The lighting lamp 200 allows the driver of the cabin 20 to easily recognize the connection state between the hoisting hook 60 and the lifted object during nighttime work, .

In addition, the illumination lamp 200 of the present invention recognizes the light emission of the illumination lamp 200 by the ground workers located below the tower crane, so that the position of the hoisting hook 60 and the hoisting block 50 of the tower crane can be easily And to prevent safety accidents.

The generator 300 of the present invention is installed on the inner right side of the hoisting block 50 located above the image pickup unit 100 and the illumination lamp 200 so as not to interfere with the operation of the illumination lamp 200 and the image pickup unit 100 And the structure of the generator 300 is constituted by a pulley member 310 which is constantly in contact with the hoist rope 70 and is rotated in the forward and reverse directions by the contact frictional force generated during hoisting and hoisting operations of the hoisting ropes 70, And a drive shaft 320 integrally connected to the pulley member 310 and driven to rotate forward and backward in accordance with rotation of the pulley member 310. [

The driving shaft 320 is linked to a known rotor 330 disposed in the housing 305 and the rotor 330 is rotatable inside the brush (not shown).

The generator 300 includes a guide roller 350 for guiding the hoisting rope 70 toward the pulley member 310 on the outer side of the pulley member 310 so as to always contact the hoist rope 70 to the outer peripheral surface of the pulley member 310 ).

In addition, the generator 300 may employ a known DC generator, and the drive shaft 320 is rotated in conjunction with the known rotor 330 to perform a function of a power generation facility. The developed electric power is supplied to a rechargeable battery (not shown) And then supplies the rechargeable battery to the illumination lamp 200 and the image capturing unit 100 through the wiring to perform a power supply function.

In the hoisting block 50 of the present invention, when the image capturing unit 100 is disposed on the inner left side and the illumination lamp 200 and the generator 300 are mounted on the inner right side, the weight of the right side is larger than the left side A weight member 400 mounted on the left side of the hoisting block 50 has a weight corresponding to the weight deviation value so as to maintain the left and right weight balance.

When the left and right weight deviations of the hoisting block 50 occur, the sheave 75 guiding the hoisting rope 70 is subjected to uneven wear. When such uneven wear becomes severe, a V-shaped groove is formed or a hoisting rope The hoisting block 50 of the present invention may be constructed such that a separate weight member 400 is attached to the hoisting block 50 and the left and right sides of the hoisting block 50 It has a function to adjust left and right balance by reducing weight difference.

In addition, the present invention is characterized in that instead of the weight member 400, the weight member 400 is arranged to surround the outside of the image pickup unit 100, and a weight corresponding to the weight deviation value And a protective case 500 having a protruding portion.

The protective case 500 is formed in a box shape surrounding the image capturing unit 100 and protects the image capturing unit 100 from external impacts or foreign substances. In addition, the protective case 500 includes a hoisting block 50, The left and right balances of the left and right sides are adjusted.

In the first embodiment of the present invention having such a configuration, the image capturing section 100 is disposed on the inner left side of the hoisting block 50 so as to be able to photograph the hoisting hook 60 on the lower side and the surrounding scene of the cargo , And the illumination lamp (200) and the generator (300) are arranged on the right side of the hoisting block (50) on the opposite side.

The hoisting block 50 and the hoisting hook 60 are then raised or lowered by hoisting and hoisting operations of the hoisting ropes 70 using the hoisting drum, The power generation of the generator 300 is performed by rotating the pulley member 310 of the generator 300 in contact with the hoisting ropes 70 in the forward and reverse directions and driving the drive shaft 320 and the rotor 330 .

When the driver of the tower crane cabin 20 outputs a control signal for the ON operation, the image capturing unit 100 photographs the surrounding hoisting hook 60 and the surrounding scene of the towed object, For example, a moving picture) is converted into an electric signal, and then wirelessly outputted to the cab 20 side.

In the cabin 20, the electric signal transmitted from the image capturing unit 100 is transmitted to the driver through the monitor disposed in the cabin 20 by using a converter (not shown) And the surrounding situation of the water.

In addition, when the driver of the cabin 20 outputs a signal for turning on the power, the illumination lamp 200 is supplied with the power of the generator 300 to emit light. The illuminating lamp 200 illuminates the lower hoisting hook 60, The operator in the cab 20 can clearly confirm the connection state between the hoisting hook 60 and the lifted object during the night work, and it is also possible for the workers located at the work site on the lower side of the crane, It is possible to identify the position of the hook 60 and the hoisting block 50 at night through the illumination of the illumination lamp 200, thereby preventing safety accidents.

5, the illumination lamp 200 and the generator 300 are omitted, and the image capturing unit 100 is connected to the hoisting block 50. In the present embodiment, .

The image capturing unit 100 has a built-in internal battery. The battery replacement operation can be performed after the hoisting block 50 is lowered on the ground to replace the battery.

6, the image pickup unit 100 and the generator 300 may be omitted, and the inside of the hoisting block 50 may be omitted, as in the case of the preceding embodiment. The illumination lamp 200 is disposed.

The illumination lamp 200 has a built-in internal battery.

Therefore, the present invention can provide electricity to the image pickup section 100 or the illumination lamp 200, which is generated by the frictional force with the hoisting rope 70 as in the preceding embodiments, The image capturing unit 100 and the illuminating lamp 200 having the built-in battery may be disposed inside the hoisting block 50 so that a driver in the cabin 20 can use a useful Effect.

10: Tower mast 20: Cab
30: Jib 35: Parallel Chu
40: trolley 50: hoisting block
60: hoisting hook 70: hoisting rope
75: Sheave 100: Image shooting unit
200: illumination lamp 300: generator
305: housing 310: pulley member
320: drive shaft 330: rotor
350: guide roller 400: weight member
500: Protective case

Claims (6)

A hoisting block 50 and a hoisting hook 60 which are moved up and down in accordance with the hoisting and hoisting operation of the hoisting rope 70 below the trolley 40 of the tower crane,
A video image pickup unit 100 arranged to be fixed to the hoisting block 50 and turned on and off according to a control signal transmitted from the outside to transmit photographed video signals to a cabin 20 side of a tower crane,
An illumination lamp 200 mounted on the hoisting block 50 and performing a light emission function as the power is applied,
And a drive shaft 320 disposed in the hoisting block 50 and rotated by frictional force in contact with the hoisting rope 70 during hoisting and winding operations of the hoisting rope 70. When the drive shaft 320 rotates, And a generator (300) for supplying the developed electricity to the image capturing unit (100) and the illumination lamp (200). The method according to claim 1,
The hoisting block 50 has a weight corresponding to the left and right weight deviation values of the image pickup unit 100, the illumination lamp 200 and the generator 300, And a weight member (400) mounted on the light weight side. The method according to claim 1,
The hoisting block 50 has a weight corresponding to the left and right weight deviation values in which the image pickup unit 100, the illumination lamp 200 and the generator 300 are respectively mounted and the outside of the image pickup unit 100 And a protection case (500) arranged to enclose the tower crane. The method according to claim 1,
The generator 300 includes a pulley member 310 provided at an end of the drive shaft 320 and in contact with the hoisting rope 70,
A guide roller 350 which is disposed outside the pulley member 310 and constantly contacts the outer circumferential surface of the pulley member 310 to guide the hoisting rope 70 toward the pulley member 310 And the tower crane safety device. A hoisting block (50) and a hoisting hook (60) which are moved up and down in accordance with the hoisting and hoisting operation of the hoisting rope (70) below the trolley (40) of the tower crane;
And is turned on and off according to a control signal transmitted from the outside to transmit the photographed video signal to the cabin 20 of the tower crane 20 And the image capturing unit 100 wirelessly transmits the image data to the tower cranes. A hoisting block 50 and a hoisting hook 60 which are moved up and down in accordance with the hoisting and hoisting operation of the hoisting rope 70 below the trolley 40 of the tower crane,
And an illumination lamp 200 mounted on the hoisting block 50 and performing a light emission function as the power of the built-in battery is applied and operated on and off by an operation control signal transmitted from the outside A tower crane safety device.

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