KR102363937B1 - A tower crane - Google Patents

Abstract

The present invention relates to a tower crane with greatly improved safety by minimizing the influence of wind, comprising: a mast part installed vertically on the ground; a cab unit installed on the upper end of the mast unit and configured to be driven by a driver; a turntable unit installed between the mast unit and the cab unit to rotate the cab unit; a counter jib unit fixed to the cab unit; a boom part installed on one side of the counter jib part, and a plurality of booms are sequentially connected to enter or withdraw in multiple stages; a length adjusting unit formed inside the boom unit to adjust the length by drawing in or withdrawing the plurality of booms; an angle adjustment unit coupled to one side of the boom unit to adjust the undulation angle of the boom unit; a hook part coupled to the boom part to hang a heavy object; a hoisting unit for hoisting the hook unit; and a balance part installed on the other side of the counter jib part to maintain the balance of the counter jib part.

Description

A tower crane

The present invention relates to a tower crane, and more particularly, to a tower crane having greatly improved safety by minimizing the influence of wind.

A tower crane is a high-lift crane mainly used for high-rise construction. It can lift construction materials or work luggage high, and since its work range is wide, it is especially used in the construction of high-rise buildings densely populated in large cities.

Such a tower crane is generally made of a hoist consisting of a hoist (hoist) for vertically lifting the cargo by a hook, and a trolley (trolley) for horizontally moving the vertically lifted cargo to a predetermined position.

Korean Patent Registration No. 10-1114030 (registered on February 1, 2012) describes a jib crane, and according to the disclosed technology, a machine room, a boom with one end installed to rotate around one side of the machine room, and the boom A boom support frame for supporting the, roughing means for rotating the boom around one end, a main hook, a main hoisting means for lifting the main hook, and a portal for supporting the boom support frame and the machine room In the jib crane including a frame, the main hoisting means includes a main hoisting drum installed in the machine room, a first main hoisting sheave installed in the boom support frame, a second main hoisting sheave installed at the other end of the boom, and the main hoist A sting drum, the first hoisting sheave, the second hoisting sheave, and a main wire wound on the main hook are provided, and the main hoisting means when the boom rotates about one end to raise or lower the main hook. The first main hoisting sheave and the second main hoisting sheave by lowering or raising the main hook by the difference in distance between the main hook is characterized in that the horizontal movement while maintaining a constant height.

Korean Utility Model Registration No. 20-0448240 (registered on March 18, 2010) describes a multi-purpose tower crane. According to the disclosed technology, a mast mounted perpendicular to the ground; a counter jib rotatably mounted on the upper end of the mast in the left and right directions due to the driving of the turning device; a jib that is rotatably fixed in an up and down direction on the counter jib; A trolley that is horizontally movably mounted on a jib so that it can be used as a T-type tower crane, and a hook is fixed so as to be lifted by a hoist wire; an upper tower mounted on the upper end of the mast and supporting a jib and a counter jib; a suspension for a jib having one end fixed to the upper tower and the other end fixed to the front of the jib, supporting the jib; a counterweight fixed to the counter jib and balancing the movement of the center of gravity of the jib according to the lifting of the weight; a hoist winch mounted on the counter jib and vertically lifting a weight by elevating a hook by a hoist wire wound on the winch when the hoist driving motor is driven; a roughing winch mounted on the counter jib so as to be used as a roughing type tower crane, and rotating the jib in an up and down direction by a roughing wire wound on the winch when the roughing driving motor is driven; and a trolley winch mounted on the jib and horizontally moving the trolley along the jib by a wire for a trolley wound on the winch when the driving motor for the trolley is driven. In the tower crane selected and used as any one of the tower cranes: When the luffing type tower crane is selected and set, the hoist wire positioned between the hook and the jib when the jib is rotated in the up and down directions In order to prevent mutual interference, the several rollers installed at the end of the jib are each arranged eccentrically away from the same axis.

As described above, since the conventional tower crane cannot adjust the length of the jib or boom installed on the upper end of the mast, it is greatly affected by the wind and is overturned by strong winds, typhoons, etc. or the wire supporting the weight is broken. In addition to the risk of accidents, the length of the jib provided at the top of the mast can be adjusted depending on the environment of the work site. There was a cumbersome problem of having to disassemble one by one, transport each component separately, and then assemble it again.

Korean Patent Registration No. 10-1114030 Korea Registered Utility Model No. 20-0448240

The technical problem to be achieved by the present invention is to solve the problems described above, and an upper tower (or 'cat tower', ' The configuration of the 'tower head') is omitted, and by forming the length of the boom adjustable to minimize the influence of wind, it provides a tower crane that greatly improves safety and prevention of accidents conducted by strong winds.

In order to solve this problem, according to one aspect of the present invention, the mast part is installed vertically on the ground; a cab unit installed on the upper end of the mast unit and configured to be driven by a driver; a turntable unit installed between the mast unit and the cab unit to rotate the cab unit; a counter jib unit fixed to the cab unit; a boom part installed on one side of the counter jib part, and a plurality of booms are sequentially connected to enter or withdraw in multiple stages; a length adjusting unit formed inside the boom unit to adjust the length by drawing in or withdrawing the plurality of booms; an angle adjustment unit coupled to one side of the boom unit to adjust the undulation angle of the boom unit; a hook part coupled to the boom part to hang a heavy object; a hoisting unit for hoisting the hook unit; And it is installed on the other side of the counter jib portion, it provides a tower crane comprising a balance portion for maintaining the balance of the counter jib portion.

In one embodiment, it is installed outside the cab, characterized in that it further comprises a wind speed measuring unit for measuring the wind speed.

In one embodiment, a memory unit for storing in advance by setting a reference wind speed allowed to prevent an accident; a controller configured to receive the measured wind speed from the wind speed measuring unit, compare the received wind speed with the reference wind speed stored in the memory unit, and generate an alarm signal when the wind speed is greater than or equal to the reference wind speed; and a speaker unit installed inside the cab unit to receive an alarm signal from the control unit and output an alarm sound.

In an embodiment, when the alarm sound lasts longer than a preset time, the control unit determines that it is an emergency situation and controls the driving of the length adjusting unit.

In an embodiment, when the alarm sound lasts longer than a preset time, the controller determines that it is an emergency situation and controls the driving of the angle adjusting unit.

According to the present invention, since the length of the boom is formed to be adjustable, it can be used by adjusting the length according to the environment of the workplace, and it is not only convenient, but also minimizes the influence of wind by reducing the length of the boom to a minimum when not working , it has the effect of preventing accidents from overturning the tower crane and greatly improving safety.

In addition, when the tower crane is installed or the installed tower crane is to be moved to another place, the length of the boom is minimized to facilitate assembly, release, and transport, and to increase work efficiency.

1 is a side view illustrating a tower crane according to a first embodiment of the present invention.
2 is a plan view illustrating a tower crane according to a first embodiment of the present invention.
3 is a view for explaining a state in which the length of the boom in FIG. 1 is extended;
FIG. 4 is a view for explaining the length adjusting unit in FIG. 1 .
5 is a view for explaining a state in which the angle of the boom unit in FIG. 1 is adjusted.
6 is a view for explaining the balance unit shown in FIG. 1 as another example.
7 is a block diagram illustrating a tower crane according to a second embodiment of the present invention.
8 to 9 are plan views illustrating a tower crane according to a fourth embodiment of the present invention.
10 to 11 are views for explaining a tower crane according to a fifth embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings, embodiments of the present invention will be described in detail so that those of ordinary skill in the art can easily carry out the present invention. However, since the description of the present invention is merely an embodiment for structural or functional description, the scope of the present invention should not be construed as being limited by the embodiment described in the text. That is, since the embodiment is capable of various changes and may have various forms, it should be understood that the scope of the present invention includes equivalents capable of realizing the technical idea. In addition, since the object or effect presented in the present invention does not mean that a specific embodiment should include all of them or only such effects, it should not be understood that the scope of the present invention is limited thereby.

On the other hand, the meaning of the terms described in the present invention should be understood as follows.

Terms such as “first” and “second” are for distinguishing one component from another, and the scope of rights should not be limited by these terms. For example, a first component may be termed a second component, and similarly, a second component may also be termed a first component.

When a component is referred to as being “connected to” another component, it may be directly connected to the other component, but it should be understood that other components may exist in between. On the other hand, when it is mentioned that a certain element is "directly connected" to another element, it should be understood that the other element does not exist in the middle. Meanwhile, other expressions describing the relationship between elements, that is, "between" and "between" or "neighboring to" and "directly adjacent to", etc., should be interpreted similarly.

The singular expression is to be understood to include the plural expression unless the context clearly dictates otherwise, and terms such as "comprise" or "have" are not intended to refer to the specified feature, number, step, action, component, part or any of them. It is intended to indicate that a combination exists, and it should be understood that it does not preclude the possibility of the existence or addition of one or more other features or numbers, steps, operations, components, parts, or combinations thereof.

All terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs, unless otherwise defined. Terms defined in the dictionary should be interpreted as being consistent with the meaning of the context of the related art, and cannot be interpreted as having an ideal or excessively formal meaning unless explicitly defined in the present invention.

Now, with reference to the drawings with respect to the tower crane according to an embodiment of the present invention will be described in detail.

1 to 5 are views illustrating a tower crane according to a first embodiment of the present invention.

1 to 5 , the tower crane 10 includes a mast unit 100, a cab unit 200, a turntable unit 300, a counter jib unit 400, a boom unit 500, a length adjustment unit ( 600 ), an angle adjustment unit 700 , a hook unit 800 , a hoisting unit 900 , and a balance unit 1000 .

The mast unit 100 is installed vertically on the ground, and maintains a predetermined height to lift various construction equipment, materials, etc. to the corresponding height at the construction site of a high-rise building.

In one embodiment, the mast unit 100, the lower end may be fixedly installed on the foundation anchor installed on the concrete of the construction site.

In an embodiment, the mast unit 100 may be provided with a telescoping cage in which a hydraulic cylinder and a hydraulic motor are installed to adjust the height.

The cab unit 200 is installed on the upper end of the mast unit 100 so that the driver can ride and drive.

In one embodiment, the cab 200 is rotatably installed by the turntable unit 300 , and the tower crane 10 such as the turntable unit 300 , the length adjusting unit 600 , the angle adjusting unit 700 , etc. ), a control member (not shown) for controlling the operation of each component is disposed so that the driver can ride and drive.

The turntable unit 300 is installed between the mast unit 100 and the cab unit 200 and rotates the cab unit 200 .

In an embodiment, the turntable unit 300 may have any configuration as long as it is configured to rotate the cab unit 200 .

The counter jib unit 400 is fixed to the cab unit 200 and is rotatably installed by the turntable unit 300 .

In an embodiment, the counter jib unit 400 may include a reinforcing member coupled between the counter jib unit 400 and the turntable unit 300 to improve reinforcing force.

The boom unit 500 is installed on one side of the counter jib unit 400 , and a plurality of booms are sequentially connected, and are drawn in or drawn out in multiple stages. A state in which a plurality of booms are drawn out and the length is extended is well shown in FIG. 3 .

In an embodiment, the boom unit 500 is formed in a tubular shape in which a plurality of booms have different diameters, and may be drawn in or drawn out in an antenna type according to the driving of the length adjusting unit 600 .

In one embodiment, the boom unit 500 is able to move the hook unit 800 to the working position by adjusting the degree of retraction or withdrawal of a plurality of booms during work, and when not working, reduce the length to a minimum and wind Stability can be strengthened by minimizing the effect of

The length adjustment unit 600 is formed inside the boom unit 500 and adjusts the overall length of the boom unit 500 by introducing or withdrawing a plurality of booms.

In one embodiment, the length adjusting unit 600, as shown in FIG. 4 , as a hydraulic cylinder, may adjust the length of the boom unit 500 by introducing or withdrawing a plurality of booms in a hydraulic manner.

The angle adjusting unit 700 is coupled to one side of the boom unit 500 to adjust the undulation angle of the boom unit 500 , as shown in FIG. 5 .

In one embodiment, the angle adjusting unit 700, as a hydraulic cylinder, is formed between the counter jib unit 400 and one side of the boom unit 500, it is possible to adjust the undulation angle of the boom unit 500 in a hydraulic manner.

The hook part 800 is coupled to the boom part 500 so that various heavy objects such as construction equipment and materials can be hung and lifted.

In an embodiment, the hook part 800 may be formed at one end of the wire and the wire that is lifted up and down by hanging on one side of the longest end of the boom part 500 and may be configured as a hook for hanging a heavy object.

The hoisting unit 900 is connected to the hook unit 800 to hoist or lower the hook unit 800 .

In one embodiment, the hoisting unit 900 may be installed in the counter jib unit 400 corresponding to between the boom unit 500 and the balance unit 1000, and winds or unwinds the wire of the hook unit 800 to the hook Make it possible to vertically lift a heavy object caught in the

The balance unit 1000 is installed on the other side of the counter jib unit 400 and maintains the balance of the counter jib unit 400 .

The tower crane 10 having the configuration as described above, since the length of the boom part 500 is adjustable, it can be used by adjusting the length according to the environment of the workplace, so it is convenient, as well as the boom part 500 when not working ) by minimizing the influence of wind by reducing the length of the tower crane to a minimum, it is possible to prevent an accident in which the tower crane is overturned and to significantly improve safety.

In addition, when the tower crane 10 is installed or the installed tower crane 10 is to be moved to another place, the length of the boom unit 500 is minimized to facilitate assembly, release, and transport, and to increase work efficiency.

In addition, by using a hydraulic cylinder to adjust the length and angle of the boom unit 500, as in a conventional tower crane, the upper tower (or 'cat') protrudes upward to connect and fix the jib and the counter jib. The structure of the 'tower' and 'tower head') and wires for adjusting the angle of the jib become unnecessary, thereby simplifying the structure and further improving work efficiency and stability.

6 is a view for explaining the balance unit shown in FIG. 1 as another example.

Referring to FIG. 6 , the balance unit 1000 may include a counterweight 1010 and a slide member 1020 .

The counterweight 1010 is slidably installed on the other side of the counter jib part 400 to maintain the balance of the counter jib part 400 .

In one embodiment, the counterweight 1010 is positioned through the slide member 1020 according to the length of the boom part 500, the undulation angle of the boom part 500 or the weight of the weight loaded on the hook part 800. It is possible to maintain the balance of the counter jib unit 400 .

The slide member 1020 is formed between the counter jib unit 400 and the counterweight 1010 , and slides the counter jib unit 1010 in the horizontal direction according to the length of the boom unit 500 .

In one embodiment, the slide member 1020, for example, a guide rail for guiding the counterweight 1010, a driving pulley installed on the guide rail, a wire rope connected between the driving pulley and the counterweight 1010, It may be configured of a motor for slidingly moving the counterweight 1010 by driving the driving pulley, and other slide methods may be used.

7 is a block diagram illustrating a tower crane according to a second embodiment of the present invention.

Referring to FIG. 7 , the tower crane 10 includes a mast unit 100 , a cab unit 200 , a turntable unit 300 , a counter jib unit 400 , a boom unit 500 , a length adjustment unit 600 , Includes an angle adjustment unit 700, a hook unit 800, a hoisting unit 900, a balance unit 1000, a wind speed measurement unit 1100, a memory unit 1200, a control unit 1300, and a speaker unit 1400. do. Here, the mast part 100 , the cab part 200 , the turntable part 300 , the counter jib part 400 , the boom part 500 , the length adjustment part 600 , the angle adjustment part 700 , the hook part 800 . ), the hoisting unit 900, and the balancing unit 1000 are similar to the components of FIGS. 1 to 5, so the description thereof will be omitted and only other parts will be described below.

The wind speed measuring unit 1100 is installed outside the cab 200 to measure the wind speed.

In an embodiment, the wind speed measuring unit 1100, as an anemometer, may measure the wind speed, convert the measured wind speed into an electrical signal, and transmit it to the controller 1300 .

The memory unit 1200 sets and stores in advance a reference wind speed allowed to prevent an accident.

In an embodiment, the memory unit 1200 sets and stores in advance a limit time (eg, 10 to 20 seconds) for determining an emergency situation according to the duration of the alarm sound output from the speaker unit 1400 . can

The control unit 1300 receives the wind speed measured from the wind speed measurement unit 1100, compares the received wind speed with a reference wind speed stored in the memory unit 1200, and the wind speed measured by the wind speed measurement unit 1100 is the standard An alarm signal is generated when the wind speed exceeds the wind speed.

In one embodiment, the control unit 1300, when the alarm sound from the speaker unit 1400 lasts for more than a preset time (eg, about 10 to 20 seconds), it is determined as an emergency situation and the length of the boom unit 500 . It is possible to generate a control signal for controlling the driving of the length adjusting unit 600 to minimize the.

In one embodiment, the control unit 1300, when the alarm sound from the speaker unit 1400 continues for more than a preset time (eg, about 10 to 20 seconds), it is determined as an emergency situation and the ups and downs of the boom unit 500 . A control signal for controlling the driving of the angle adjusting unit 700 may be generated to maintain the angle in a safe state (eg, an angle of about 15 to 50°).

The speaker unit 1400 is installed inside the cab unit 200 , receives an alarm signal from the control unit 1300 , and outputs an alarm sound.

In an embodiment, when an alarm signal is received from the control unit 1300 , the speaker unit 1400 may continuously output an alarm sound until an alarm release switch provided to cancel the alarm sound is pressed.

Therefore, it informs the driver through an alarm first so that the driver can recognize the danger caused by strong winds, so that the driver can quickly evacuate after operating the drive of the hoisting unit 900 and the length and angle of the boom unit 500 in a safe state. By automatically controlling the length and angle of the boom part 500 and minimizing the influence of the wind in emergency situations such as when the driver cannot drive or the crane does not work, the tower crane 10 is overturned, etc. accidents can be effectively prevented.

The tower crane 10 having the configuration as described above may further include a wind direction measuring unit 1500 and a screen (not shown).

The wind direction measuring unit 1500 is installed outside the cab, and measures the wind direction.

In an embodiment, the wind direction measuring unit 1500 , as a wind vane, may measure the wind direction, convert the measured wind direction into an electrical signal, and transmit it to the controller 1300 .

At this time, when the operation of the tower crane 10 is not performed, the control unit 1300 receives the wind direction information measured by the wind direction measurement unit 1500, and the turntable unit 300 in the same direction as the measured wind direction. It is possible to generate a control signal for rotating the . By allowing the turntable unit 300 to rotate along the wind direction, there is an effect of further reducing the resistance to the wind.

The screen is formed inside the cab 200 , receives data on wind speed or direction from the controller 1300 , and displays it on the screen so that the driver can check it.

8 to 9 are plan views illustrating a tower crane according to a fourth embodiment of the present invention.

8 to 9 , the tower crane 10 further includes a wing unit 1600 .

A plurality of wing units 1600 are coupled to the outside of the cab 200 to minimize wind resistance.

In an embodiment, the wing unit 1600 may be coupled to the front, rear, left, and right portions of the cab unit 200 one by one.

In an embodiment, the wing unit 1600 includes a first frame member 1610 , a second frame member 1620 , a wing member 1630 , a first driving member 1640 , a second driving member 1650 , It may be formed of a rotating member 1660 .

The first frame member 1610 is rotatably installed on the upper portion of the cab 200 , and a wing member 1630 may be formed in one direction.

In an embodiment, the first frame member 1610 may be respectively formed on the upper front side, the upper rear side, the upper left side, and the upper right side of the cab unit 200 .

One side of the second frame member 1620 is coupled to the first frame member 1610 , and the wing member 1630 is coupled to the other side to connect them.

In an embodiment, the second frame member 1620 may be formed such that a plurality of frames are sequentially connected to be drawn in or drawn out in multiple stages so that the length can be adjusted.

The wing member 1630 is coupled to the other side of the second frame member 1620 to minimize wind resistance.

In one embodiment, the wing member 1630 has a cross-section formed in a '<' shape, so that wind resistance can be minimized by distributing the wind to both sides around the bent portion.

In one embodiment, the wing member 1630 may be formed in various sizes according to the size or necessity of the cab unit 200, and may be made of various materials such as a steel plate so that the shape is not deformed or damaged by strong wind. .

The first driving member 1640 is connected to the first frame member 1610 and applies a driving force so that the first frame member 1610 can rotate in the front-rear direction.

At this time, when the wind speed measured by the wind speed measuring unit 1100 is equal to or greater than the reference wind speed, the control unit 1300 generates a control signal for controlling the driving of the first driving member 1640 , and transmits the generated control signal to the first It may be transmitted to the driving member 1640 .

The second driving member 1650 is connected to the second frame member 1620 and provides a driving force so that the second frame member 1620 can rotate in the left and right directions.

The rotation member 1660 is formed between the first frame member 1610 and the second frame member 1620 so that the second frame member 1620 can rotate.

That is, normally, the wing member 1630 is positioned and stored on the upper surface of the cab 200 as shown in FIG. 8, and when a wind greater than or equal to the reference wind speed is sensed, the first driving member 1640 is driven as shown in FIG. As the wing member 1630 is positioned in the outer direction of the cab unit 200, the wind is dispersed to both sides to minimize the influence of the wind applied to the cab unit 200, and the cab unit 200 shakes or rotates. It is possible to prevent an accident in which the tower crane 10 is overturned. In addition, by rotating the wing member 1630 in the left and right directions according to the frequently changing wind direction, it can be used by appropriately adjusting it according to the direction in which the wind blows.

10 to 11 are views for explaining a tower crane according to a fifth embodiment of the present invention.

10 to 11 , the tower crane 10 further includes an extension 1700 .

The expansion unit 1700 is coupled to the cab unit 200 to expand the internal space of the cab unit 200 .

In an embodiment, the extension 1700 may include an extension member 1710 , a guide member 1720 , a gear member 1730 , and a motor member 1740 .

The expansion member 1710 is provided on one side of the cab 200 and is installed to expand the internal space of the cab 200 .

In an embodiment, the expansion member 1710 has a box-shaped structure with one side open, and may be installed to be movable along the guide member 1720 .

In an embodiment, the extension member 1710 is provided with a plurality of protrusion members 1711 in the longitudinal direction on both sides, and the protrusion members 1711 may be installed to mesh with the gear member 1730 .

The guide member 1720 guides the expansion member 1710 to move in the horizontal direction.

In an embodiment, the guide member 1720 may insert the protrusion member 1711 of the expansion member 1710 to guide the expansion member 1710 to move in the horizontal direction.

The gear member 1730 is coupled to the motor member 1740 and receives rotational force from the motor member 1740 to move the expansion member 1710 while rotating.

The motor member 1740 is connected to the gear member 1730 to provide rotational force to the gear member 1730 .

In an embodiment, the motor member 1740 may be formed as a bidirectional motor capable of rotating in both directions about a rotation axis, and may provide rotational force alternately in a forward or reverse direction as needed.

That is, as the gear member 1730 rotates in the forward direction by the forward rotational force provided from the motor member 1740, the protrusion member 1711 of the extension member 1710 engages and moves, as shown in FIG. 11 , the space of the cab 200 or the gear member 1730 rotates in the reverse direction by the reverse rotational force provided from the motor member 1740, the expansion member 1710 moves in the opposite direction, and the cab 200 in its original state again as shown in FIG. can be reduced to the size of the space of

Since the cab of the conventional tower crane has a narrow internal space, there is an inconvenience when the driver works for a long time. It is possible to increase the convenience of the driver and increase the efficiency of space use by providing a space that can be used for a variety of other purposes.

As mentioned above, the embodiment of the present invention is not implemented only through the above-described apparatus and/or operation method, but through a program for realizing a function corresponding to the configuration of the embodiment of the present invention, a recording medium in which the program is recorded, etc. It may be implemented, and such an implementation can be easily implemented by an expert in the technical field to which the present invention pertains from the description of the above-described embodiments.

Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improved forms of the present invention are also provided by those skilled in the art using the basic concept of the present invention as defined in the following claims. is within the scope of the right.

10 : Tower Crane
100: mast part
200: cab
300: turntable unit
400: counter jib unit
500: boom
600: length adjustment part
700: angle adjustment unit
800: hook part
900: Kwon Sang-bu
1000: balance part
1010: flat member
1020: slide member
1100: wind speed measurement unit
1200: memory unit
1300: control unit
1400: speaker unit
1500: wind direction measurement unit
1600: wing
1610: first frame member
1620: second frame member
1630: wing member
1640: first driving member
1650: second driving member
1660: Rotating member
1700: extension
1710: extended member
1720: guide member
1730: gear member
1740: motor member

Claims (5)

Mast part installed vertically on the ground;
a cab unit installed on the upper end of the mast unit and configured to be driven by a driver;
a turntable unit installed between the mast unit and the cab unit to rotate the cab unit;
a counter jib unit fixed to the cab unit;
a boom part installed on one side of the counter jib part, and a plurality of booms are sequentially connected to enter or withdraw in multiple stages;
a length adjusting unit formed inside the boom unit to adjust the length by drawing in or withdrawing the plurality of booms;
an angle adjustment unit coupled to one side of the boom unit to adjust the undulation angle of the boom unit;
a hook part coupled to the boom part to hang a heavy object;
a hoisting unit for hoisting the hook unit;
a balance part installed on the other side of the counter jib part to maintain the balance of the counter jib part;
a wind speed measuring unit installed outside the cab to measure wind speed;
a memory unit for setting and storing in advance a reference wind speed allowed to prevent an accident;
a controller configured to receive the measured wind speed from the wind speed measuring unit, compare the received wind speed with the reference wind speed stored in the memory unit, and generate an alarm signal when the wind speed is greater than or equal to the reference wind speed;
a speaker unit installed inside the cab unit to receive an alarm signal from the control unit and output an alarm sound;
a wind direction measuring unit installed outside the cab to measure a wind direction;
a screen formed inside the cab to receive data on wind speed or direction from the control unit and display it on the screen;
A plurality of couplings are formed on the outside of the cab, and include a wing portion for minimizing wind resistance,
The wing portion,
a first frame member rotatably installed on an upper portion of the cab;
a second frame member having one side coupled to the first frame member;
a wing member coupled to the other side of the second frame member to minimize wind resistance;
a first driving member connected to the first frame member to apply a driving force so that the first frame member can rotate in the front-rear direction;
a second driving member connected to the second frame member to apply a driving force to the second frame member to rotate in the left and right directions;
a rotation member formed between the first frame member and the second frame member to allow the second frame member to rotate;
The control unit is
When the wind speed measured by the wind speed measuring unit is greater than or equal to the reference wind speed, a control signal for controlling the driving of the first driving member is generated, and the generated control signal is transmitted to the first driving member. .
delete delete According to claim 1, wherein the control unit,
Tower crane, characterized in that when the warning sound continues for more than a preset time, it is determined as an emergency situation to control the driving of the length adjusting unit.
According to claim 1, wherein the control unit,
Tower crane, characterized in that when the warning sound continues for more than a preset time, it is determined as an emergency situation to control the operation of the angle adjusting unit.

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