KR20140092714A - A driving device for Crane boom assembly - Google Patents

A driving device for Crane boom assembly Download PDF

Info

Publication number
KR20140092714A
KR20140092714A KR1020130005115A KR20130005115A KR20140092714A KR 20140092714 A KR20140092714 A KR 20140092714A KR 1020130005115 A KR1020130005115 A KR 1020130005115A KR 20130005115 A KR20130005115 A KR 20130005115A KR 20140092714 A KR20140092714 A KR 20140092714A
Authority
KR
South Korea
Prior art keywords
boom
draw
pulley
wire
cylinder
Prior art date
Application number
KR1020130005115A
Other languages
Korean (ko)
Inventor
정인권
Original Assignee
동양기전 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 동양기전 주식회사 filed Critical 동양기전 주식회사
Priority to KR1020130005115A priority Critical patent/KR20140092714A/en
Publication of KR20140092714A publication Critical patent/KR20140092714A/en

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62—Constructional features or details
    • B66C23/64—Jibs
    • B66C23/68—Jibs foldable or otherwise adjustable in configuration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C2700/00—Cranes
    • B66C2700/03—Cranes with arms or jibs; Multiple cranes
    • B66C2700/0321—Travelling cranes
    • B66C2700/0357—Cranes on road or off-road vehicles, on trailers or towed vehicles; Cranes on wheels or crane-trucks

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)

Abstract

The present invention relates to a device for driving a crane boom assembly. The device for driving a crane boom assembly is configured to comprise a main boom, a plurality of inserting and withdrawing booms combined inside the main boom to insert and withdraw, a cylinder device for allowing some of the inserting and withdrawing booms to insert and withdraw, wires for allowing the rest of said inserting and withdrawing booms to be operated, and pulleys on which the wires are wound.

Description

Technical Field [0001] The present invention relates to a crane boom assembly,

In particular, the present invention relates to a boom assembly driving apparatus for a crane, and more particularly, to a boom assembly driving apparatus for a crane, in which a plurality of booms constituting a boom assembly are drawn out or drawn in at the same time to shorten the working time, And more particularly, to a boom assembly drive device for a crane that improves operability and assemblability.

As shown in Fig. 1, a typical crane is composed of an engine drive unit 1, a loading unit 2, and a crane unit 3. The crane portion 3 is a portion that substantially pulls the load body. The crane section 3 is provided with a boom assembly 4.

2, the boom assembly 4 includes a plurality of booms 11, 12, 13, 14, 15 and 16 connected to hydraulic cylinders 21, 22 and 23, wires 31, And the pulleys 32, 42, 51, and 52.

Specifically, in consideration of stability, the boom assembly 4 normally includes the hydraulic cylinders 21, 22, 22, and 24 to the first boom 11, the second boom 12, the third boom 13 and the fourth boom 14, 23 and the fifth boom 15 and the sixth boom 16 are driven by the drive pulleys 32, 42 in a rotating manner without being driven by hydraulic pressure in consideration of their own loads, And is drawn out by the wires 31 and 41.

The operation process will be described in detail as follows. The boom assembly 4 is sequentially inserted into the first boom 11 from the second boom 12 to the sixth boom 16 in sequence.

A first cylinder (21) is installed between the first boom (11) and the second boom. One end of the first rod 211 of the first cylinder 21 is fixed to the first boom 11 and the first cylinder body 212 of the first cylinder 21 is fixed to the second boom 12 .

A second cylinder (22) is installed between the second boom (12) and the third boom (13). One end of the second rod 221 of the second cylinder 22 is fixed to the second boom 12 and the second cylinder body 222 of the second cylinder 22 is fixed to the third boom 13 . The distal end of the second rod 221 is communicated with the distal end of the first cylinder body 212.

A third cylinder (23) is installed between the third boom (13) and the fourth boom (14). One end of the third rod 231 of the third cylinder 23 is fixed to the third boom 13 and the third cylinder body 223 of the third cylinder 23 is fixed to the fourth boom 14 do. The distal end of the third rod 23 communicates with the distal end of the second cylinder body 223.

When the hydraulic pressure is applied to the inside of the first cylinder 21, the first rod 211 protrudes from the first cylinder body 212 and the first cylinder body 212 moves to the right, The second boom 12 protrudes from the first boom 11 and is drawn out.

At this time, the second cylinder 22 installed between the second boom 12 and the third boom 13 is moved in accordance with the drawing operation of the second boom 12, and then the first rod 22 of the first cylinder 21 211 are completely protruded, hydraulic pressure is applied to the second cylinder body 222 to start the projecting operation. That is, in the operation of the second cylinder 22, the hydraulic pressure is applied to the first cylinder 21 so that the first rod 211 protrudes, and when the first cylinder body 212 moves, The hydraulic pressure introduced into the first cylinder 21 flows into the second cylinder body 222 of the second cylinder 22 through the tip of the second rod 221 of the second cylinder 22 The second rod 221 of the second cylinder 22 is protruded and the third boom 13 is moved to the right to be drawn out.

Similarly, the third cylinder 23 provided between the third boom 13 and the fourth boom 14 is moved in accordance with the drawing operation of the third boom 13, and the second rod 221 of the second cylinder 22 The protruding operation is started.

The third cylinder 23 is protruded by applying hydraulic pressure to the second cylinder 22 so that the second rod 221 protrudes and the second cylinder body 222 is moved to the right and the second rod 221 The hydraulic pressure that has flowed into the second cylinder body 222 flows into the third cylinder body 232 through the tip of the third rod 231 of the third cylinder 23, The third rod 231 of the first boom 23 protrudes from the third cylinder body 232 and the fourth boom 14 protrudes rightward.

In this manner, the second, third, and fourth boom (12, 13, 14) are protruded by the first, second and third cylinders (21,

On the other hand, the fifth boom 15 and the sixth boom 16 are pulled out by the wire and the pulley, not by the cylinder device.

The withdrawal of the fifth boom 15 is carried out as follows. One end of the third boom 13 and one end of the fifth boom 15 are connected to each other by a first wire 31 for drawing and the first wire 31 for drawing is connected to the fourth boom 14 A first pulley 32 for drawing is provided. When the fourth boom 14 is pulled out by the third cylinder 23, the first pulley 32 provided on the fourth boom 14 is moved to the right and the fifth boom 15 is pulled out.

The drawing of the sixth boom 16 is carried out as follows. One end of the fourth boom 14 and one end of the sixth boom 16 are connected by the second wire for drawing 41 and the second wire for drawing 42 is hooked on the fifth boom 15 A second pulley 42 for drawing is provided. When the fifth boom 15 is drawn out as described above, the sixth boom 16 is drawn out while the second pulley 42 for drawing is moved to the right.

As a result, in the creel-boom assembly, the withdrawal operation causes the second boom 12 to start the withdrawal operation by the first cylinder 21, at which time the third to sixth booms 13, 14, 15, Is in a stopped state. Then, when the third boom 13 starts to be drawn out by the second cylinder 22, the fourth to sixth booms 14, 15, and 16 are in a stopped state. In addition, when the fourth boom 14 is drawn out by the third cylinder 23, the fifth boom 15 and the sixth boom 16 are simultaneously drawn out.

Meanwhile, in the conventional crew-boom assembly according to the above-described configuration, the sequential feed-in process of each boom will be described as follows.

One end of the fourth boom 14 and one end of the sixth boom 16 are connected by a lead wire 50. The lead wire 50 is connected to a lead wire 1 pulley 51 and a second pulley 52 for insertion which is provided in the second cylinder 22. [

When the first rod 211 of the first cylinder 21 is inserted into the first cylinder body 212, the second boom 12 to which the first cylinder body 212 is fixed is inserted into the first boom 11 Lt; / RTI >

The second rod 221 of the second cylinder 22 is operated at the time when the second boom 12 is completely inserted into the first boom 11 and the third boom 13 is driven by the second boom 12 ).

The third rod 231 of the third cylinder 23 starts the insertion operation at the time when the third boom 13 is completely inserted into the second boom 12, Is inserted into the third boom (13).

At this time, as the third cylinder body 232 of the third cylinder 23 is moved to the left side, the first pull-in pulley 51 provided on the third cylinder body 232 is moved to the left side, So that the sixth boom 16 is pulled.

The retracting operation of the third cylinder 23 causes the pulling wire 50 to be pulled together with the operation of inserting the fifth and sixth booms 15 and 16 into the fourth and fifth booms 14 and 15, respectively, The boom 16 is inserted into the fifth boom 15 and the incoming wire 50 fixed to the fifth boom 15 is pulled by the insertion operation of the fifth boom 15, And the fifth and sixth boom (15, 16) are inserted into the fourth and fifth boom (14, 15), respectively, while pushing the first pulley (32)

In this way, since the first, second, third, and fourth boom assemblies are sequentially drawn and drawn by the cylinder apparatus, the time required for drawing and pulling in is increased, and the use of the fuel is increased accordingly there is a problem.

The first pulling pulley 51 provided in the third cylinder 23 and the second pulling pulley 52 provided in the second cylinder 22 are arranged in the vertical direction and the sixth boom 16 Must accommodate the first and second pulleys 51 and 52 at the time of entry, so that the height of the sixth boom 16 must be designed to be large enough to accommodate the first and second pulleys 51 and 52, The operation speed is slowed by the sixth boom 16, which is designed to be large.

In addition, since one end of the lead-in wire 50 is fixed to the fourth boom 14, there is a problem that the lead wire 50 is inconveniently fixed in the fourth boom 14. [

SUMMARY OF THE INVENTION The present invention has been conceived to solve the above-mentioned problems, and it is an object of the present invention to provide a boom assembly for a boom assembly which simultaneously operates a draw-in boom to draw and draw time, And to provide a crane boom assembly drive device that can assure quick operation and improve assemblability by reducing the vertical height of the crane boom assembly.

In order to solve the above problems, an apparatus for driving a boom assembly of a crane according to an embodiment of the present invention includes a main boom, a plurality of draw-out booms coupled to the main boom so as to be drawn in and out, And a pulley in which the wires are wound and the pulleys on which the wires are wound are installed in a boom assembly driving device for a boom assembly of a crane, A first rod fixed to the main boom so as to draw the first draw-out / going-out boom from the main boom when the fifth draw-in / take-out boom is inserted; A first cylinder having a first cylinder body fixed to the first cylinder body; A second rod fixed to the second loading / unloading boom so as to draw the third loading / unloading boom out of the second loading / unloading boom; a second cylinder fixedly mounted on the third loading / A second cylinder having a body; A first wire having one end coupled to the main boom and the other end coupled to the second draw-out I / O; A first pulley installed in the first draw-in / out boom for guiding and guiding the first wire; And a second wire, one end of which is coupled to the second draw-out and input port and the other end of which is coupled to the main boom; And a second pulley installed in the first draw-out and going-in boom for guiding and guiding the second wire; A third wire, one end of which is coupled to the second draw-out I-beam and the other end of which is coupled to the fourth draw-out I-beam; A third pulley installed in the third take-out and going-in boom for guiding and guiding the third wire; A fourth wire, one end of which is coupled to the third draw-out I / O and the other end of which is coupled to the fifth draw-out I / A fourth pulley installed in the fourth draw-out / going-in boom for guiding and guiding the fourth wire; A fifth pulley, a sixth pulley, and a seventh pulley, which are sequentially horizontally spaced apart from the second cylinder body 204; A fifth wire coupled at one end to the fifth draw-out and going-in boom, and sequentially hooked to a fifth pulley, a seventh pulley, and a sixth pulley; And a dummy cylinder coupled to the other end of the fifth wire and fixed to the second draw-out and input boom.

Here, it is preferable that the first and second cylinders operate simultaneously.

According to another aspect of the present invention, there is provided an apparatus for driving a boom assembly of a crane, comprising: a main boom; a plurality of draw-out booms coupled to the main boom so as to be drawn in and out; And a plurality of pulleys for driving the remainder of the draw-out boom and pulleys on which the wires are wound, the apparatus comprising: a main boom having a first take-in boom to a fifth take- A first rod fixed to the main boom so as to draw out the first draw-out / going-out boom from the main boom when the first rod is inserted into the first boom; A first cylinder having a first cylinder body; A second rod fixed to the second loading / unloading boom so as to draw the third loading / unloading boom out of the second loading / unloading boom; a second cylinder fixedly mounted on the third loading / A second cylinder having a body; A first wire having one end coupled to the main boom and the other end coupled to the second draw-out I / O; A first pulley installed in the first draw-in / out boom for guiding and guiding the first wire; And a second wire, one end of which is coupled to the second draw-out and input port and the other end of which is coupled to the main boom; And a second pulley installed in the first draw-out and going-in boom for guiding and guiding the second wire; A third wire, one end of which is coupled to the second draw-out I-beam and the other end of which is coupled to the fourth draw-out I-beam; A third pulley installed in the third take-out and going-in boom for guiding and guiding the third wire; A fifth pulley, a sixth pulley, and a seventh pulley, which are sequentially horizontally spaced apart from the second cylinder body 204; A fifth wire coupled at one end to the fifth draw-out and going-in boom, and sequentially hooked to a fifth pulley, a seventh pulley, and a sixth pulley; And a dummy cylinder coupled to the other end of the fifth wire and fixed to the second draw-out and input boom.

Here, it is preferable that the first and second cylinders operate simultaneously.

The boom assembly drive device of a crane according to the present invention is a device for driving a boom assembly of a crane according to the present invention, in which incoming wires are arranged in parallel to suppress occurrence of interference with other components constituting the boom assembly, The height of the end boom located at the last end of the boom can be reduced to lighten the weight, thereby ensuring the promptness of operation at the time of the draw-in.

In addition, when the boom assembly is pulled in and pulled in, the draw-out boom is operated at the same time to shorten the draw-in and draw-in time, and the use of the fuel is reduced as the working time is shortened.

In addition, since one end of the wire for pulling the end boom is fixed to the dummy cylinder, the one end of the wire can be fixed to the dummy cylinder and then can be coupled to the boom assembly.

1 is a schematic side view of a conventional crane,
Fig. 2 is a cross-sectional view of the crane boom assembly drive device employed in Fig. 1,
3 is a cross-sectional view of a crane boom assembly drive apparatus according to an embodiment of the present invention,
4 is a cross-sectional view of a crane boom assembly driving apparatus according to another embodiment of the present invention.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

First, a boom assembly drive device for a crane according to the present invention relates to a drive device for pulling out and pulling a boom assembly. The driving device of the boom assembly includes a main boom, a plurality of draw-in and out draw-outs coupled to the inside of the main boom so as to be drawn in and out, a cylinder device for drawing out a part of the draw- And pulleys on which the wires are wound.

3 is a cross-sectional view of a boom assembly drive apparatus for a crane according to an embodiment of the present invention.

3, the apparatus for driving a boom assembly of a crane according to an embodiment of the present invention includes a first cylinder 210, a second cylinder 220, a first wire 310, a first pulley 311, The second pulley 811, the third wire 410, the third pulley 411, the fourth wire 510, the fourth pulley 511, the fifth to seventh pulleys 711, 712, 713, A fifth wire 710, and a derby cylinder 600.

3, the crane boom assembly driving apparatus according to the present invention includes a main boom 101 and a plurality of outgoing and going outs sequentially inserted into the main boom 101. Referring to FIG. 3, The driving apparatus of the boom assembly shows a state in which five draw-out booms are inserted into the main boom 101. [ That is, the first to fourth input / output boom (102) to fifth input / output boom (106) are inserted into the main boom (101).

The first cylinder 210 is provided to draw out the first draw-in / out boom 102 from the main boom 101. The first cylinder 210 includes a first rod 201 and a first cylinder body 203.

The first rod 201 is fixed at one end to the main boom 101, inserted into the first cylinder body 203, The first cylinder body 203 is fixed to the first inlet / In this embodiment, one end of the first cylinder body 203 is fixed to the distal end of the first draw-out /

When the first rod 201 of the first cylinder 210 protrudes from the first cylinder body 203, the first draw-in / out boom 102 is drawn out from the main boom 101, and the first rod 201 Is inserted into the first cylinder body (203), the first draw-in / out boom (102) is drawn into the main boom (101).

The second cylinder 220 is provided to draw out the third inlet / outlet boom 104 from the second inlet / outlet boom 103. The second cylinder (220) includes a second rod (202) and a second cylinder body (204). In the present embodiment, the second cylinder 220 operates simultaneously with the first cylinder 210.

The second rod 202 is fixed to the second loading / unloading boom 103 and is inserted into the second cylinder body 204 and is coupled to the second rod 202 so that the second rod 202 can protrude / retract. The second cylinder body 204 is fixed to the third inlet / In this embodiment, one end of the second cylinder body 204 is fixed to the tip end of the third draw-out /

When the second rod 202 of the second cylinder 220 protrudes from the second cylinder body 204, the third input / output boom 104 protrudes from the second input / output boom 103, When the rod 202 is inserted into the second cylinder body 204, the third draw-in / out boom 104 is drawn into the second draw-out /

The first wire 310 is provided to draw out the second draw-in / out boom 103 from the first draw-in / out boom 102. One end of the first wire 310 is coupled to the main boom 101 and the other end is coupled to the second draw-out /

The first pulley 311 is provided for guiding the first wire 310 and is provided on the first input / output boom 102. In the present embodiment, the first pulley 311 is provided at the end of the first take-out and going-out boom 102 (the other end of the first cylinder body 203 on the opposite side of the tip end fixed to the first take- .

The first pulley 311 disposed in the first draw-in / out boom 102 is moved to the right when the first draw-out / going-in boom 102 is pulled out by the first cylinder 210, And the inlet 103 is drawn out from the first inlet /

The second wire 810 is provided to draw the second draw-in / out boom 103 into the first draw-in / out boom 102. One end of the second wire 810 is coupled to the second draw-out / input / output boom 103 and the other end of the second wire 810 is coupled to the main boom 101.

The second pulley 811 is provided to guide the second wire 810 by hanging it. The second pulley 811 is installed in the first draw-out / In this embodiment, the second pulley 811 is disposed at the front end portion of the first draw-out /

When the first rod 201 of the first cylinder 210 is inserted into the first cylinder body 203, the first draw-in / out boom 102 is drawn into the main boom 101. At this time, since the second pulley 811 installed in the first loading / unloading box 102 moves in the direction in which the first loading / unloading / loading 102 and the second loading / Lt; / RTI >

The third wire 410 is provided to pull out the fourth draw-in / out boom 105 from the third draw-in / out boom 104. One end of the third wire 410 is coupled to the second draw-out and input-draw 103 and the other end is coupled to the fourth draw-out and input 105.

The third pulley 411 is provided to guide the third wire 410 by walking. The third pulley 411 is installed in the third draw-in / out boom 104. In the present embodiment, the third pulley 411 is disposed at the end portion of the third draw-out /

The fourth wire 510 is provided to pull out the fifth draw-in / out boom 106 from the fourth draw-in / out boom 105. One end of the fourth wire 510 is coupled to the third draw-in and input-draw 104 and the other end is coupled to the fifth draw-out and input-draw 106.

The fourth pulley 511 is provided to guide the fourth wire 510 by hanging it. The fourth pulley 511 is installed in the fourth draw-out / In this embodiment, the fourth pulley 511 is disposed at the end portion of the fourth draw-out /

The fifth pulley 711, the sixth pulley 712, and the seventh pulley 712 are provided for guiding the fifth wire 710. The fifth pulley 711, the sixth pulley 712 and the seventh pulley 712 are horizontally spaced apart from the second cylinder body 204 in order. That is, the fifth pulley 711, the sixth pulley 712, and the seventh pulley 712 are not disposed in the vertical direction.

The fifth wire 710 is provided to draw the fifth draw-in / out boom 106 into the fourth draw-in / out boom 105. One end of the fifth wire 710 is coupled to the fifth input / output boom 106 and the other end is coupled to a dummy cylinder 600 described later. Specifically, after extending from one end of the fifth draw-in / out bucket 106, first wound on the fifth pulley 711, then wound on the seventh pulley 713, then wound on the sixth pulley 712, 600).

The other end of the fifth wire 710 is coupled to the dummy cylinder 600 and is fixed to the second draw-out / The dummy cylinder 600 is a cylinder without a rod, and is fixed to the tip of the second draw-in / out spool 103 in the embodiment of the present invention.

Hereinafter, the operation of the crane boom assembly driving apparatus according to the above construction will be described in detail.

First, a process in which a plurality of draw-out booms are pulled out from the main boom 101 will be described.

Since the first and second cylinders 210 and 220 according to the present embodiment operate simultaneously, the first draw-in / out boom 102 is drawn out from the main boom 101, and at the same time, the third draw- 103).

Specifically, when the first rod 201 of the first cylinder 210 protrudes from the first cylinder body 203, the first cylinder body 203 moves to the right side and the first cylinder body 203 is coupled to the first cylinder body 203 The first draw-in / out boom 102 is pulled out from the main boom 101. When the second rod 202 of the second cylinder 220 protrudes from the second cylinder body 204, the second cylinder body 204 moves to the right and the second rod body 202 of the second cylinder body 204 Out port 104 is pulled out from the second loading /

At this time, when the first cylinder body 203 is moved to the right, the first pulley 311 coupled to the first draw-out and input boom 102 moves to the right and the second draw-out and input boom 103 moves to the first draw- . That is, one end of the first wire 310 is fixed to the end portion of the main boom 101 and the other end is fixed to the second draw-out and input boom 103. Since the length of the first wire 310 is constant, When the pulley 311 moves to the right, the position of the coupling point of the first wire 310 coupled to the second input / output I / O 103 moves to the right, so that the second input / output I / .

Thus, the main boom 101 and the first, second, and third draw-in / out boom 102, 103, and 104 are simultaneously drawn. The first draw-out and input boom 102 is pulled out from the main boom 101 by the first cylinder 210 and the third draw-out and input boom 104 is pulled by the second cylinder 220 from the second draw- And at this time, the second draw-out input-output boom 103 is simultaneously drawn out by the first wire 310 and the first pulley 311.

Next, a drawing process of the fourth draw-in / out draw-in boom 105 and the fifth draw-in / out draw-in boom 106 will be described.

The fourth draw-in / out draw-in boom 105 and the fifth draw-in / out draw-out boom 106 are simultaneously pulled out when the third draw-in / out draw-in boom 104 is pulled out from the second draw-

The third pulley 411 coupled to the end of the third take-off input / output boom 104 moves to the right side. One end of the third wire 410 engaged with the third pulley 411 is connected to the second I / O boom 103 and the other end is connected to the fourth I / O boom 105. Therefore, when the third pulley 411 moves to the right side, the position of the coupling point at which the third wire 410 is connected to the fourth input / output boom 105 is shifted to the right side because the length of the third wire 410 is constant. The fourth draw-in / out draw-in boom 105 is pulled out from the third draw-in / out draw-out boom 104. [

The fourth pulley 511 coupled to the terminating end of the fourth draw-out / going-in boom 105 moves to the right when the fourth draw-in / out box 105 is pulled out of the third draw- One end of the fourth wire 510 engaged with the fourth pulley 511 is connected to the third input / output boom 104 and the other end is connected to the fifth input / output boom 106. Since the length of the fourth wire 510 is constant, when the fourth pulley 511 moves to the right, the position of the coupling point where the fourth wire 510 is connected to the fifth draw-in / out boom 106 moves to the right The fifth draw-in / out draw-in boom 106 is pulled out from the fourth draw-out /

As described above, the fourth draw-in / out draw-in boom 105 and the fifth draw-out draw-in boom 106 draw out the first, second and third draw-in / out booms 102, 103, 104 from the main boom 101, (104, 105).

Meanwhile, the boom assembly driving apparatus of the crane according to the embodiment of the present invention is introduced through the following process.

When the first rod 201 of the first cylinder 210 is inserted into the first cylinder body 203, the first draw-in / out boom 102 is drawn into the main boom 101. When the second rod 202 of the second cylinder 220 is inserted into the second cylinder body 204 simultaneously with the operation of the first cylinder 210, the third draw- And enters the inside of the entrance boom 103.

At this time, the second pulley 811 coupled to the front end of the first draw-in / out box 102 moves to the left, pulling the second draw-in / out boom 103. That is, the second wire 810 having a certain length is connected at one end to the second draw-out / going-in boom 103 and at the other end to the main boom 101, so that the second pulley 811 moves to the right The second draw-in / out draw-in boom 103 is drawn into the first draw-in / out draw-in boom 102 by pulling the second draw-

In this way, the first, second, and third draw-in / out spools 102, 103, and 104 are simultaneously drawn by the first and second cylinders 210 and 220, the second wire 810, and the second pulley 811.

Next, the drawing-in process of the fourth draw-in / out draw-in boom 105 and the fifth draw-in / out draw-in boom 106 will be described.

When the first, second, and third draw-in / out boom 102, 103, 104 are drawn by the first cylinder 210, the second cylinder 220, the second wire 810 and the second pulley 811, And the fifth loading / unloading boom 106 are drawn in at the same time.

Specifically, when the second draw-in / out draw-in boom 103 and the third draw-in / out draw-in boom 104 are pulled in, the third pulley 411 coupled to the end portion of the third draw- Then, the third draw-in / out buoy 104 moves to the left, pulling the fourth wire 510 and pulling the fourth pulley 511 to the left. Therefore, the fourth draw-in / out draw-in boom 105 and the fifth draw-in / out draw-in boom 106 move to the left at the same time.

At this time, the fifth wire 710 pulls the fifth draw-in / out boom 106. Specifically, one end of the fifth wire 710 is connected to the fifth draw-out input / output boom 106 and the other end is connected to the dummy cylinder 600.

When the second rod 202 of the second cylinder 220 is inserted into the second cylinder body 204, the fifth to seventh pulleys 713 to 713 coupled to the second cylinder body 204, Moves to the left. Since the other end of the fifth wire 710 is fixed to the dummy cylinder 600, when the fifth pulley 711 to the seventh pulley 713 move to the left, the fifth pulley 711 and the fifth The distance between the wire 710 and the fixed point fixed to the derby cylinder 600 becomes large. Therefore, the fifth draw-in / out boom 106 is drawn into the fourth draw-in / out boom 105.

In other words, the fifth wire 710 is pulled by the operation of inserting the fourth draw-in / out boom 105 and the fifth draw-in / out boom 106 into the third draw-in / out boom 104 and the fourth draw- The fifth wire 510 is pulled by the insertion and extraction of the fourth input / output I / O boom 105 by the fourth input / output I / O boom 105, The third pulley 411 provided at the end of the third take-off input / output box 104 is moved to the left. At this time, the fifth input / output boom 106 receives the fifth to seventh pulleys 711 to 713 therein.

According to the embodiment of the present invention, since the fifth to seventh pulleys 711 to 713 are horizontally arranged, the lead-in wires are arranged in parallel so that interference between the wire and other parts constituting the boom assembly can be prevented Thereby suppressing the occurrence of accidents. The possibility of interference with other structures can be drastically reduced compared with the case where the conventional wires are arranged in the vertical direction.

In addition, since the fifth pulley 711 to the seventh pulley 713 are horizontally arranged, it is not necessary to design the width of the up / down height of the fifth draw-out / Therefore, the boom assembly can be made lighter, and the draw-out and the draw-in can be performed quickly by reducing the weight.

Further, by simultaneously drawing and pulling out a plurality of draw-out booms from the main boom, it is possible to shorten the time required for drawing and pulling in, thereby improving work efficiency and reducing the use of fuel according to the reduction of work time.

In addition, the number of cylinders used for pulling-in and pulling-out of the draw-in / out boom from the main boom is minimized, thereby reducing manufacturing cost and weight.

In addition, since one end of the fifth wire 710 that draws in the fifth draw-in / out box 106 (which is the end boom located at the end in this embodiment) is fixed to the dummy cylinder 600, The one end of the wire 710 can be fixed to the boom assembly after fixing the one end thereof, thereby improving the assembling performance. In other words, when fixing the wire to the draw-out zipper as in the prior art, it is possible to solve the trouble of fixing the wire in the draw-out zipper.

Meanwhile, FIG. 4 illustrates a crane boom assembly driving apparatus according to another embodiment of the present invention. The same reference numerals are assigned to configurations that perform the same functions as those in the embodiment of FIG. 3, and a detailed description thereof will be omitted.

This embodiment differs from the embodiment according to Fig. 3 in that a main boom 101 and first to fourth draw-in and-out booms 102, 103, 104, 105 are provided as draw- will be. That is, the figure shows a case where there are four draw-in booms.

Therefore, the fifth wire 710 is different in that one end of the fifth wire 710 is connected to the fourth draw-out and input boom 105, and the fourth wire and the fourth pulley are omitted, which is different from the embodiment of Fig. Other configurations, operations, and effects according to the embodiment of FIG. 4 are similar to those of FIG. 3, so a detailed description thereof will be omitted.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, and many modifications may be made without departing from the scope of the present invention.

101 ... main boom 102 ... first draw-in boom
103 ... second take-out boom 104 ... third take-out boom
105 ... fourth take-out boom 106 ... fifth take-out boom
210 ... First cylinder 201 ... First rod
203 ... first cylinder body 220 ... second cylinder
202 ... second rod 204 ... second cylinder body
310 ... first wire 311 ... first pulley
410 ... 3rd wire 411 ... 3rd pulley
510 ... fourth wire 511 ... fourth pulley
600 .. dummy cylinder 710 ... fifth wire
711 ... fifth pulley 712 ... sixth pulley
713 ... seventh pulley 810 ... second wire
811 ... 2nd pulley

Claims (4)

A main boom, a plurality of draw-in and out draw-outs coupled to the inside of the main boom so as to be pulled in and out, a cylinder device for drawing out a part of the draw-out I-beams, wires for operating the remainder of the draw- A boom assembly drive device for a crane having pulleys wound therearound,
When the first outgoing input / output boom 102 to the fifth outgoing / incoming boom are sequentially inserted into the main boom 101,
A first rod 201 fixed to the main boom 101 and a first rod 201 inserted and withdrawn so as to draw the first draw-in / out boom 102 from the main boom 101; A first cylinder (210) having a first cylinder body (203) fixed to the first loading / unloading box (102);
A second rod 202 fixed to the second loading and unloading boom 103 to draw the third loading and unloading boom 104 from the second loading and unloading boom 103; A second cylinder (220) having a second cylinder body (204) inserted and protruded and fixed to the third inlet / outlet box (104);
A first wire (310) having one end coupled to the main boom (101) and the other end coupled to the second input / output boom (103);
A first pulley 311 installed on the first draw-in / ejection boom 102 for guiding and guiding the first wire 310; And
A second wire 810 having one end coupled to the second outflow input / output 103 and the other end coupled to the main boom 101; And
A second pulley 811 installed on the first loading / unloading boom 102 and guiding the second wire 810 by guiding it;
A third wire 410 one end of which is coupled to the second outflow input / output 103 and the other end of which is coupled to the fourth outflow / incoming boom 105;
A third pulley 411 installed on the third input / output / input boom 104 and guiding the third wire 410 by guiding it;
A fourth wire 510, one end of which is coupled to the third input / output I / O boom 104 and the other end of which is coupled to the fifth input / output boom 106;
A fourth pulley 511 installed in the fourth draw-in / out-loading boom 105 for guiding the fourth wire 510;
A fifth pulley 711, a sixth pulley 712, and a seventh pulley 713 that are sequentially horizontally spaced apart from the second cylinder body 204;
A fifth wire 710, one end of which is coupled to the fifth input / output boom 106 and is sequentially hooked on the fifth pulley 711, the seventh pulley 713, and the sixth pulley 712;
And a dummy cylinder (600) coupled to the other end of the fifth wire (710) and fixed to the second input / output boom (103). The method according to claim 1,
Wherein the first and second cylinders operate simultaneously. A main boom, a plurality of draw-in and out draw-outs coupled to the inside of the main boom so as to be pulled in and out, a cylinder device for drawing out a part of the draw-out I-beams, wires for operating the remainder of the draw- A boom assembly drive device for a crane having pulleys wound therearound,
When the first to fourth draw-in / out boom (102) to fourth draw-in / out boom are sequentially inserted into the main boom (101)
A first rod 201 fixed to the main boom 101 and a first rod 201 inserted and withdrawn so as to draw the first draw-in / out boom 102 from the main boom 101; A first cylinder (210) having a first cylinder body (203) fixed to the first loading / unloading box (102);
A second rod 202 fixed to the second loading and unloading boom 103 to draw the third loading and unloading boom 104 from the second loading and unloading boom 103; A second cylinder (220) having a second cylinder body (204) inserted and protruded and fixed to the third inlet / outlet box (104);
A first wire (310) having one end coupled to the main boom (101) and the other end coupled to the second input / output boom (103);
A first pulley 311 installed on the first draw-in / ejection boom 102 for guiding and guiding the first wire 310; And
A second wire 810 having one end coupled to the second outflow input / output 103 and the other end coupled to the main boom 101; And
A second pulley 811 installed on the first loading / unloading boom 102 and guiding the second wire 810 by guiding it;
A third wire 410 one end of which is coupled to the second outflow input / output 103 and the other end of which is coupled to the fourth outflow / incoming boom 105;
A third pulley 411 installed on the third input / output / input boom 104 and guiding the third wire 410 by guiding it;
A fifth pulley 711, a sixth pulley 712, and a seventh pulley 713 that are sequentially horizontally spaced apart from the second cylinder body 204;
A fifth wire 710, one end of which is coupled to the fourth draw-out input-output boom 106 and is sequentially hooked on the fifth pulley 711, the seventh pulley 713, and the sixth pulley 712;
And a dummy cylinder (600) coupled to the other end of the fifth wire (710) and fixed to the second input / output boom (103). The method of claim 3,
Wherein the first and second cylinders operate simultaneously.
KR1020130005115A 2013-01-16 2013-01-16 A driving device for Crane boom assembly KR20140092714A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020130005115A KR20140092714A (en) 2013-01-16 2013-01-16 A driving device for Crane boom assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020130005115A KR20140092714A (en) 2013-01-16 2013-01-16 A driving device for Crane boom assembly

Publications (1)

Publication Number Publication Date
KR20140092714A true KR20140092714A (en) 2014-07-24

Family

ID=51739287

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020130005115A KR20140092714A (en) 2013-01-16 2013-01-16 A driving device for Crane boom assembly

Country Status (1)

Country Link
KR (1) KR20140092714A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111762730A (en) * 2020-08-13 2020-10-13 青岛中汽特种汽车有限公司 Telescopic system of multistage arm telescopic type aerial working truck arm frame

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111762730A (en) * 2020-08-13 2020-10-13 青岛中汽特种汽车有限公司 Telescopic system of multistage arm telescopic type aerial working truck arm frame
CN111762730B (en) * 2020-08-13 2021-09-14 青岛中汽特种汽车有限公司 Telescopic system of multistage arm telescopic type aerial working truck arm frame

Similar Documents

Publication Publication Date Title
CN105417410A (en) Telescoping arm structure with locking mechanism and crane
EP3424868A1 (en) Expansion/contraction mechanism
CN102285598B (en) Multi-section arm telescopic device and crane with same
CN104444866B (en) Control system of telescopic mechanism and crane with same
CN102689846B (en) Rope row type telescopic boom mechanism and crane provided with same
KR20140092714A (en) A driving device for Crane boom assembly
CN105417411A (en) Telescopic boom structure based on multi-stage oil cylinder and crane
KR20130101344A (en) Simultaneous operable crane boom assembly
CN205226235U (en) Four sections flexible arms to high altitude construction carry out side tow chain device that pipeline was carried
EP3473582B1 (en) Mobile crane
KR102058837B1 (en) Multi-stage boom wire input / output system
CN202671073U (en) Rope row-type telescopic arm mechanism and crane with the same
US20160221803A1 (en) Telescopic boom extension device
CN104129725B (en) A kind of single-cylinder bolt type telescopic boom, telescopic method and crane
CN104071711A (en) Crane and telescopic arm structure thereof
CN102536921B (en) Coil cable motor system
KR20150026357A (en) Crane boom assembly
KR20130005470A (en) A driving device for crane boom assembly
KR20110132892A (en) Multi-boom structure and crane equipped with the same
CN106006237B (en) Coal-winning machine with twisted and released of the cable function
CN105508325A (en) Hydraulic control system with tail coil winding function for coil car
KR20140134151A (en) Multistage In and Out Boom
KR101647116B1 (en) cable installation method of corrugate pipe using compartment tool
CN103342298A (en) Knuckle arm disassembling and assembling device for crane
JP2620461B2 (en) Multi-stage telescopic boom cable telescopic device

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E601 Decision to refuse application
J201 Request for trial against refusal decision
J301 Trial decision

Free format text: TRIAL DECISION FOR APPEAL AGAINST DECISION TO DECLINE REFUSAL REQUESTED 20141027

Effective date: 20151125