KR20090126936A - Crane for pylon - Google Patents

Abstract

PURPOSE: A crane for pylon is provided to easily move a crane base to the upper side of a pylon according as the height of the pylon is increased, thereby reducing the number of working processes according to the height adjustment of the crane. CONSTITUTION: A crane for pylon comprises a crane base(20), a boom(11), a position maintenance unit(30), and a winch unit(40). The crane base is installed in a transmission tower or a distribution tower which is being constructed. The crane base includes a rotation supporting part(21). The boom is connected by a hinge to a rotating member(13) rotatably installed in the rotation supporting part. The position maintenance unit controls and keeps the position of the boom. The winch unit is installed in the ground or the crane base. The winch unit winds or unwinds a main rope(41) wound on a main roller(12) which is installed in the end side of the boom.

Description

Cranes for Steel Tower {crane for pylon}

The present invention relates to a pylon crane, and more particularly, to a pylon crane that can be installed on the support of the pylon to be built to tow and lift members for building the pylon.

Typically, the installation area of the transmission and distribution steel towers is often installed on slope mountainous terrain where working conditions are difficult. Since the material of the transmission and distribution tower is made of high-strength pipe or section steel, a crane is often used when installing the transmission and distribution tower.

The steel tower assembly method using such a boom is a method of assembling the steel tower by hanging a reinforcing steel frame by attaching a boom to either side of the steel tower main body by a derrick method. This method secures the bottom of the boom lifting the reinforcing steel frame by pulling up the lifting wire by the winch operation so that the wire does not roll around the one of the towers, which is installed in all directions, and one end is fixed to the upper end of the boom. After fixing the other end of the branch line to the ground, one end is connected to the reinforcement frame and the other end is pulled up by pulling the impression ear connected to the winch via the pulley installed on the top of the boom and the pulley installed on the steel tower. It is a method of constructing a steel tower in a thin way. However, such a structure becomes difficult to install the boom as the height of the steel tower rises, and there is a problem of a safety accident.

Korean Utility Model No. 0435532 discloses a rotary boom for steel tower assembly. The disclosed boom rotary boom has a main body formed in a hollow pipe shape so that the impression wire can pass therethrough, and a lower end is installed at an upper end of the main body so as to be rotatable and coupled with a bearing. It has a configuration including a rotary pulley. The disclosed rotary tower boom is difficult to install because the impression wire passes through the inside of the boom, and the structure for reducing the friction between the rope and the boom is relatively complicated because it passes through the inner wire and the boom.

Patent No. 0310991 discloses a prefabricated tower crane for a transmission tower. The tower crane of the disclosed structure is difficult to install and dismantle, and is installed inside the transmission and distribution tower, which is inconvenient to use and relatively inadequate in field adaptability.

The present invention is to solve the problems described above, the construction of the transmission tower, the distribution tower, the construction of the transmission tower, that is, the member forming the distribution tower, that is, the steel or heavy materials can be raised and lowered while constructing the transmission tower, the construction of the steel tower It is possible to improve, and to provide a tower crane that can reduce the cost of installing a separate crane for the construction of the transmission, distribution tower.

The present invention is to provide a crane for a steel tower that can be easily installed in the crane base to reduce the other labor in the installation and disassembly of the crane base.

Steel tower crane of the present invention to achieve the above object

Crane base is installed in the transmission and distribution tower under construction, and the rotary support unit,

A boom hinged to a rotating member rotatably installed in the rotatable support;

And posture maintenance means for maintaining the posture adjustment and posture of the boom;

It is characterized in that it is provided on the ground or crane base provided with a winch means for winding or unwinding the main rope is caught on the main roller is installed on the end side of the boom.

In the present invention, the crane base is installed on both sides of the rotary support and the first and second support frames, the end of which is supported on the support, and the third, which is supported on the upper side of the rotary support and extends to both sides of the support, Four support frames are rotatably installed on the third support frame, and are coupled to the ends of the fourth support frame by coupling means to secure the third and fourth support frames to the props of the steel tower. do.

The main rope between the main roller and the main drum of the winch means is guided by guide rollers installed on the boom and drawn out to the lower side of the rotary support through the rotary member supported by the rotary support.

Alternatively, the tower crane for achieving the above object,

Crane base which is installed in Songsong and distribution tower during construction and supports the rotation support,

A boom having a vertical beam rotatably installed in the rotatable support and a horizontal beam extending in a horizontal direction from an end of the vertical beam;

A main roller installed at an end portion of the horizontal ratio portion;

It is characterized in that it is provided on the ground or crane base provided with a winch means for winding or unwinding the main rope is caught on the main roller is installed on the end side of the boom.

Pylon crane according to the present invention by installing a crane base on the steel tower to be constructed, that is, the members constituting the steel tower, that is, the steel tower can be assembled by lifting the steel or pipes, so it is necessary to install a separate crane support from the ground for the construction of the steel tower There is no.

In addition, as the height of the pylon increases, the crane base can be easily moved to the upper side of the pylon, thereby reducing the work maneuver according to the height adjustment of the crane.

Pylon crane according to the present invention is to install a crane by moving the crane base according to the height of the steel tower to be constructed at the time of construction of the tower for transmission and distribution, by using it to elevate the member for building the steel tower, One embodiment is shown in FIGS. 1 to 4.

Referring to the drawings, the crane 10 for the tower is installed in the transmission and distribution tower during construction, the crane base 20 for supporting the rotation support 21 and the rotation rotatably installed in the rotation support 21 And a boom stand 11 hinged to the member, and a boom posture maintaining means 30 installed on the support or the rotational support portion 21 of the steel tower to maintain the posture adjustment and posture of the boom 11. And winch for lifting the support 110, the horizontal member 120, the reinforcing member 130 for assembling the steel tower 100 by winding or unwinding the main rope to the end of the boom 11, the main roller 12 Means 40 are provided.

Referring to the operation of the crane for a tower according to the present invention configured as described above are as follows.

Crane base 20 according to the present invention is to support the boom 11 to the support 110 of the steel tower 100, is installed on the rotary support 21 and its lower side, the end side is the support ( First and second support frames 22 and 23 supported by 110 and third and fourth support frames 24 which are installed on the upper side of the rotary support part 21 and extend toward the support 120 of the pylon. 25 and the third support frame 24 is rotatably installed and coupled by the fourth support frame 25 and the coupling means 26 to the support 110 of the steel tower. And a fastening frame 27 for supporting the 3 and 4 support frames 24 and 25. The fastening frame 27 surrounds the outer circumferential surface of the iron column 120, and preferably has an inner circumferential surface thereof having the same structure as that of the steel tower support outer circumferential surface. The coupling means 26 may be made of a bolt and a nut. The coupling means is not limited to the above-described embodiment, but a through hole is formed at an end of the fastening frame 27 and an end of the fourth support frame 25, and a through hole formed in the fourth support frame and the fastening means. It can be made by coupling the pin to.

In addition, horizontal beams of steel towers are provided on both sides of the crane base 20 to prevent rotation of the crane base 20 on the first and second support frames 22 and 23 or the third and fourth support frames 24 and 25 of the crane base 20. Support blades (not shown) supported by the 120 may be further provided.

The boom 11 is hinged to the rotating member 13 rotatably supported by the rotation support 21. As shown in FIG. 3, the support of the rotating member 13 with respect to the rotating support part 21 is provided with an annular protruding jaw 14 on the inner circumferential surface of the lower end side of the rotating supporting part 21, so that the lower end of the rotating member 13 is provided. Rotatably support. Here, the lower end of the rotating member 13 has a guide portion 13a inserted into the through hole 15 formed by the protruding jaw 14. Therefore, the centers of the coupling members of the rotary members 13 of the rotary support 21 can be easily matched.

 The rotating member 13 is formed with a hollow 16a so that the main rope 41 of the winch means can pass therethrough, and the hollow 16a is provided with a guide roller for guiding the main rope 41. Can be.

The main roller 12 installed at the end of the boom 11 is supported by the bracket 12a, and the main rope 12 is disposed on the bottom surface of the boom 11 by the hollow ( A guide roller 16 for guiding with 16 is installed. The boom 11 is a circular pipe. Shape steel, it may be made of a structure assembled by the steel, but is not limited thereto. The length of the boom stand 11 may vary depending on the size of the steel tower during construction of the steel tower 100, the boom 11 is preferably relatively simple, variable. The length of the boom stand 11 is slidably coupled to the first boom member 31 and the first boom member 32 so that the length of the boom 11 can be varied as needed, and the first, The position can also be fixed by forming a through hole in the 2 boom member and pin-engagement.

The posture maintenance means 30 of the boom is for the angle in the vertical direction of the boom 11 hinged to the rotating member 13, as shown in Figure 2 the boom installed on the pillar (110) of the steel tower ( 11, the first liner roller 31 installed on the bracket 12a, the second liner roller 32 installed on the support 110, and the first liner provided on the support 110 or on the ground. A posture holding winch 34 for winding or unwinding the looped posture holding rope 33 caught by the roller 31 and the second tensile roller 32 is provided.

The posture maintaining means is installed in the posture holding boom 35 to the rotating member 13, as shown in Figure 4 and the second tension roller 32 and the first and second line rollers on the posture holding boom 35 A posture maintenance winch 33 may be installed to wind or unwind the posture retention rope 33 caught by the (31) and (32). As described above, the posture maintenance winch 34 includes a posture maintenance drum 34b on which the posture maintenance ropes 33 caught on the first and second tension rollers 31 and 32 are wound and installed on the subframe 34a, It is provided in the sub-frame 34a and has a first driving part 34c for winding or unwinding the posture maintenance drum 34b. Preferably, the first driving part 34c uses a geared motor having a speed reducer having a motor using hydraulic pressure or electricity.

The attitude maintenance means 30 of a boom is not limited to the above-mentioned embodiment, Any structure may be sufficient as the structure which can rotate the boom 11 in the up-down direction based on the hinge engagement part. For example, it may be made of a hydraulic or pneumatic cylinder and a pneumatic generating means capable of supplying the hydraulic or pneumatic to it, or may be made of a lead screw and a driving motor for raising and lowering the boom.

The winch means (40) is caught on the main roller (12) and guide rollers (16) to wind or unwind the main rope (41) passing through the hollow (16a) of the rotating member (13) The main frame 42 is installed on the steel tower 100, the main drum 43 rotatably installed on the main frame 42, and the main drum 43 is installed on the main frame 42 ) Is provided with a second driving unit 44 for releasing or winding the main rope 41 by forward and reverse rotation. The second driving part 44 has substantially the same structure as the first driving part.

5 shows another embodiment of a crane for a pylon according to the present invention. The same reference numerals as the above embodiment indicate the same components.

Referring to the drawings, the crane for tower 50 is a vertical boom 51 installed perpendicular to the rotating member 13, a horizontal boom 52 extending in a horizontal direction from the end of the vertical boom 51, The main roller 12 is rotatably installed by the bracket 12a on the horizontal boom 52.

Here, the bracket 12a supporting the main roller 12 is preferably moved in the longitudinal direction of the horizontal boom 52 so as to fix its position. As an embodiment, the coupling holes 53 are installed in the horizontal boom 52 at a predetermined pitch in the longitudinal direction, and the bracket 12a of the main roller 12 is supported in the coupling holes 53 to adjust the position thereof. It is desirable to be able to move.

The movement of the main roller 12 is not limited thereto, and a sliding beam 53 slidably installed on the horizontal boom 52 is installed, and a main roller 12 is installed at an end of the sliding beam. (12) can be advanced back and forth. Since the crane base 20 and the winch means have the same configuration as the above-described embodiment will not be described again.

Referring to the operation of the crane for a tower according to the present invention configured as described above are as follows.

First, the tower 100 for transmission and distribution is constructed while assembling the tower holder 110, the horizontal member 120 and the reinforcing member 130 in a state where the foundation of the tower 100 is installed. In this process, when the construction of the steel tower is a height that can not be transported using manpower, the steel tower crane 10, the construction of the tower tower 110 or the horizontal member 120 or reinforcement member 130 Install using. And the angle of the boom 11 is maintained using the boom posture holding means 30 to facilitate the transport of the members. That is, the angle of the boom 11 is maintained by winding or unwinding the posture maintenance rope 33 by using the first driving part 34c. And using the winch means 40 installed on the ground or the crane base 20 to carry out the assembly of the steel tower carrying the tower 110 and the horizontal member 120 and the reinforcing member 130 for assembly.

When the construction of the steel tower proceeds as described above and the construction of the height of the boom stand 11 or more, a roller (not shown) is installed on the upper side of the tower to separate the crane base, and the crane base is separated. And using the winch means 40 to raise the pylon crane (10). The crane base 20 is installed in the tower pillar 100 as described above, and the steel tower is constructed in the same manner as described above.

In particular, in the case of installing the structure extending in the horizontal direction of the side of the pylon 100 as shown in Figure 5 so that the horizontal boom 52 protrudes to the outside of the pylon, and raises the assembled part of the structure from the ground Can be installed on a steel tower under construction.

Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent embodiments are possible.

Therefore, the true scope of protection of the present invention should be defined only by the appended claims.

1 is a perspective view showing a state of use of the crane for a tower according to the invention,

Figure 2 is an exploded perspective view of the crane for the tower of Figure 1;

3 is a perspective view showing an extract of the crane base shown in FIG.

4 is a perspective view showing another embodiment of the pylon crane according to the present invention,

Figure 5 is a perspective view showing another embodiment of a crane for a tower according to the present invention.

Claims (6)

Crane base is installed in the transmission and distribution tower under construction, and the rotary support unit, A boom hinged to a rotating member rotatably installed in the rotatable support; And posture maintenance means for maintaining the posture adjustment and posture of the boom; Steel tower crane characterized in that it is provided on the ground or crane base provided with a winch means for winding or unwinding the main rope is caught on the main roller is installed on the end side of the boom.  The method of claim 1, The crane base is installed on both sides of the rotary support and the first and second support frames, the end of which is supported on the support, and the third and fourth support frames supported on the upper side of the rotation support and extending to both sides of the support; It is rotatably installed on the third support frame, characterized in that it is provided with a fastening frame coupled to the end of the fourth support frame by a coupling means for fixing the third, fourth support frame to the support of the steel tower Crane for pylon.  The method of claim 1, The main rope between the main roller and the main drum of the winch means is guided by guide rollers installed on the boom and drawn out to the lower side of the rotary support through the rotating member supported on the rotary support. The method of claim 1, The posture holding means of the boom includes a first tension roller installed at an end of the boom and a second tension roller installed on a post of the post holding member or steel tower rotatably installed on the rotating member, and the first and second tension rollers. A posture maintenance rope, a posture maintenance drum installed in a subframe installed at an end of the post or posture retention means, and a first driving part installed in the subframe to wind or unwind the posture maintenance rope on a posture maintenance drum; Steel tower crane characterized in that. Crane base which is installed in Songsong and distribution tower during construction and supports the rotation support, A boom having a vertical beam rotatably installed in the rotatable support and a horizontal beam extending in a horizontal direction from an end of the vertical beam; A main roller installed at an end portion of the horizontal ratio portion; Steel tower crane characterized in that it is provided on the ground or crane base provided with a winch means for winding or unwinding the main rope is caught on the main roller is installed on the end side of the boom. The method of claim 1, The main roller installed at the end of the horizontal boom is installed so that the position adjustable in the longitudinal direction of the horizontal boom crane.

Images