KR100449527B1 - crane with hook easily adjusting mounting position - Google Patents

Abstract

PURPOSE: A crane device is provided to simultaneously perform vertical drawing operations in a bucket and a lower boom by moving the installing position of a hook to the wanted lower boom. CONSTITUTION: A vertical drawing device(50) contains a hook guide portion to be combined with a boom(20). The hook guide portion is combined and separated from a combining portion of the boom. The combining portion of the boom comprises a first combining portion to be formed in the tip of a final expansion boom and a second combining portion to be formed another expansion boom. Thereby, an upper bucket operation and a lower vertical drawing operation are simultaneously performed by moving the installing position of a hook to a wanted lower boom. Moreover, the life of the vertical drawing device is extended by installing the hook in the lower fixed boom when only the bucket operation is performed.

Description

Crane with hook easily adjusting mounting position

The present invention relates to a crane device having a hook for adjusting the mounting position, and more particularly, it is possible to detach the hook attached to the telescopic boom located at the shortest end of the multistage telescopic boom and attach it to another boom as opposed to It also relates to a crane device that allows the operator to freely adjust the position of the hook according to the working conditions.

As shown in FIG. 1, the conventional crane includes an engine driving unit 100, a mounting unit 110, and a crane unit 120. The crane unit 120 located between the engine driving unit 100 and the mounting unit 110 may include a rotary block 121 that is rotated by the power of the engine and a telescopic boom rotatably supported at an upper end of the rotary block 121. (122), a derrick cylinder (123) for controlling the lifting angle of the telescopic boom (122), the upper and lower towing means (124) hanging on the final boom (125) of the telescopic boom (122), and It consists of a winch 124a for elevating the upper and lower towing means 124, and a bucket 126 attached to the final boom 125, for carrying out work at a predetermined position by the operator.

In addition, the expansion and contraction boom 122 is a plurality of booms are contracted and extended by the hydraulic pressure and the tension of the wire.

The operation of the crane is made in the driver's seat located at the top of the rotary block 121, the upper and lower towing means 124 is elevated by the loosening and winding of the wire by the drive of the winch 124, derrick cylinder 123 The inclination angle of the expansion and contraction boom 122 is adjusted by the operation of the hydraulic plural booms are raised so that the upper and lower towing means 124 and the bucket 126 on which the operator boards can be located in the desired workspace.

The plurality of telescopic boom 122 is composed of a first stage boom, a second stage boom, a third stage boom, and a fourth stage boom in order from the rotating block 121 of the crane, the multi-stage expansion boom 122 to be extended by sequentially projecting. It is supposed to shrink as it enters the reverse order.

The conventional crane device described above has the following problems because the upper and lower towing means including the hook is attached only to the final boom tip.

First, if it is necessary to simultaneously carry out the upper and lower towing work on the lower boom separately from the work on the bucket attached to the upper boom, attach the separate hook to the lower boom or start the upper and lower towing work only after the bucket work is finished. There is a number.

Second, even if only the bucket work without the upper and lower towing work is the hook and wire is always moved with the bucket, thereby reducing the life of the wire and winch due to unnecessary frequent operation.

The present invention has been made in order to solve the above problems, the object of the present invention is first, the mounting position of the hook when the upper and lower towing operation must be performed at the same time separately from the operation on the bucket attached to the upper boom To the bottom of the boom to move the work on the bucket and the upper and lower towing work at the bottom of the boom at the same time,

Secondly, when only the work on the bucket is performed without the upper and lower towing operation, the hook is mounted on the fixed boom at the bottom to prevent unnecessary wire and winch operation, thereby increasing the life of the upper and lower towing means.

1 is a perspective view showing a conventional crane device

Figure 2 is a perspective view showing a crane device provided with a top and bottom pulling means of the present invention.

Figure 3 is a front view schematically showing a state in which the mounting position of the inventors upper and lower towing means is moved.

Figure 4 is a detailed view showing a detailed view of the upper and lower towing means.

5 and 6 are perspective views showing that the upper and lower pulling means are mounted on the second stage boom and the fourth stage boom.

<Description of the symbols for the main parts of the drawings>

10: rotating block 20: telescopic boom

21: 1st stage boom 22: 2nd stage boom

23: 3-stage boom 24: 4-stage boom

30: first coupling part

40: second coupling part

50: upper and lower towing means 51: hook guide portion

52: hook portion 53: connecting pin

54: winch 55: wire

60: bucket

100: engine driving unit 110: tower control

120: crane portion 121: rotation block

122: Telescopic Boom 123: Derek Cylinder

124: upper and lower towing means 125: final boom

126: bucket

In order to achieve the above object, the present invention is installed on a rotating block rotatably attached to the vehicle body and a multi-stage stretchable telescopic boom extending to the upper portion of the rotating block and installed on the telescopic boom to move the goods up and down In the boom crane having the upper and lower pull means consisting of a winch, pulley, wire and hook to enable

The upper and lower towing means includes a hook guide portion coupled to the boom, the hook guide portion is formed to be coupled to and detachable from the engaging portion of the boom, the engaging portion of the boom is formed at the tip of the final telescopic boom of the extension boom It includes a second coupling portion formed on at least one of the extension boom of the first coupling portion and the remaining expansion boom.

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

Referring to Fig. 2 showing the crane apparatus according to the present invention, it shows a state in which the telescopic boom 20 having multiple stages is extended and the hook 52c is attached to the second stage boom 21.

Crane according to the present invention is composed of a rotary block 10 and the expansion and contraction boom 20 and the bucket (60). The boom is fixedly coupled to the first stage boom 21 and the rotary block 10 integrally, the lower end of the second stage boom 22 and the upper end of the first stage boom 21 is hinged in a manner that can be freely rotated up and down.

The three-stage boom 23 is capable of expansion and contraction into the interior of the second-stage boom 22, and the four-stage boom 24 is capable of expansion and contraction into the three-stage boom 23, like the three-stage boom 23. A bucket 60 is attached to the tip of the four-stage boom 24.

4 is a view showing the upper and lower pulling means 50, the upper and lower pulling means 50 is composed of a hook portion 52 and the hook guide portion (51).

The hook portion 52 has a hook-shaped hook 52c coupled to the lower portion thereof, and a hook pulley 52a around which a wire 55 is wound is installed at the center thereof, and the hook pulley 52a has two hook plates. (52b) It is rotatably supported in the inner center.

The hook guide portion 51 is connected to the upper portion of the hook portion 52 by a wire 55, and the wire 55 is wound around the guide pulley 51a. In addition, the guide pulley 51a is rotatably supported at the inner center of the two guide plates 51b, and two boom fastening holes 51c formed by perforating along the corners at the upper portion of the guide plate 51b. There is this.

The boom fastening hole 51c uses a link pin 53a for fixing the connecting pin 53 and the tip of the connecting pin 53 as a binding device. The connecting pin 53 has a link pin 53a at the tip. The link pin fastening hole 53b is formed so that () may be coupled.

Referring to Figure 5, a two-stage boom 22 is a view showing, the two-stage boom 22 of the expansion boom 20 has a winch 54 that provides a driving force to wind or unwind the wire 55, The winch 54 has a motor having a rotational driving force and a winding drum for winding the wire using the driving force. The motor and the winding drum are the same as in the known art and are specifically shown in this figure, and only the winch 54 is shown.

In addition, the lower end of the two-stage boom 22 is formed with a second coupling portion 40 to which the boom fastening holes 51c can be coupled, and the second coupling portion 40 is at the lower end of the two-stage boom 22. It consists of two hook fixing protrusions 41 protruding from the two-stage boom 22 and formed to face each other, and two second hook coupling holes 42 formed through holes formed on the hook fixing protrusions 41.

6 is a view showing the four-stage boom 24, wherein the first coupling portion 30 that can be engaged with the boom engaging hole 51c is formed at the front end of the four-stage boom 24. The first coupling The part 30 has two molding plates 31 attached to both sides of the front end of the boom, and two first hook coupling holes 32 formed by boring along edges at the bottom of the molding plate 31. There is this.

The present invention having the above configuration operates as follows.

The upper and lower towing means attached to one end of the telescopic boom pulls out the connecting pins attached to the hook fixing protrusions of the boom, and then pulls out the upper and lower towing means from the boom. The upper and lower pulling means pulled out as described above couples the upper and lower pulling means to the hook coupling hole of the molding plate formed at the other end by a connecting pin. Once the worker performs the work after combining as described above, the upper and lower towing means is taken out again and placed on the original boom.

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

3 is a view showing the operation of the crane according to the present invention, the three-stage boom 23 and the four-stage boom 24 are sequentially projected by the driving of the hydraulic, it is to be released in the reverse order.

The upper and lower pulling means 50 constituted by the hook portion 52 and the hook guide portion 51 may move the hook 52c up and down according to the operation of the winch 54, and the hook guide portion 51 may be two. It is attached to the step boom 22.

In addition, if a user needs, the hook guide part 51 attached to the second boom 22 may be detached and attached to the molding plate 51 of the fourth boom 24.

4 is a view showing the upper and lower towing means 50, the guide pulley (51a) and the hook pulley (52a) is rotated by the wire (55) wound and wound in accordance with the operation of the winch 54, thereby The hook 52c moves up and down. At this time, the guide pulley 51a and the hook pulley 52a rotate at the inner centers of the guide plate 51b and the hook plate 52b, respectively.

5 shows that the upper and lower towing means 50 is mounted on the two-stage boom 22, and the upper and lower towing means 50 may be attached to the hook fixing protrusion piece 41 formed integrally with the two-stage boom 22. .

The second hook fastening hole 42 formed in the hook fixing protrusion piece 41 of the two-stage boom matches the boom engaging hole 51c formed in the guide plate 51b of the hook guide portion 51, and the matching hole 42 Insert the connecting pin 53 between the (51c). The connection pin 53 fitted in this way prevents the connection pin 53 from being detached due to the movement of the boom by inserting the link pin 53a into the link pin fastening hole 53b formed at the tip.

In addition, the detachment of the upper and lower towing means 50 attached may be performed in the reverse order as described above.

6 is a view showing attaching the upper and lower towing means 50 to the fourth boom. The upper and lower towing means 50 detached from the second boom 22 has a second hook fastening hole formed in the fourth boom 24 ( 42 is aligned with the boom fastening hole 51c of the upper and lower towing means 50, and then the connecting pin 73 is inserted between the matched holes 42 and 51c. Insertion of the link pin 75 into the connection pin 73 fitted as described above is completed, the removal may proceed in the reverse order.

In the above described the operating device has been described to connect the hook formed in the second boom to the fourth boom, but in addition to the present description if the upper and lower towing means attached to any boom in the multi-stage boom belongs to the scope of the present invention.

In addition, even in the present method of connection, using a bolt and nut or other similar method of connection other than the method using a connection pin and a link pin, if it is easily attached and detached will fall within the scope of the present invention.

According to the present invention having the above-described configuration, the following effects are obtained.

First, when the upper and lower towing work must be performed at the bottom of the boom separately from the bucket work, the upper bucket work and the upper and lower towing work are simultaneously performed by moving the mounting position of the hook to the desired lower boom.

Second, when only the bucket work is performed without the upper and lower towing operation, the hook is mounted on the fixed boom at the bottom to increase the life of the upper and lower towing means.

Third, the present invention is detachable by a simple pin so that one person can be attached and detached by a simple tool.

Fourth, the present invention can be used as a number of hooks attached to a single hook, the production cost is reduced compared to the mounting of several hooks.

Fifth, the hook device according to the present invention is relatively simple in structure and easy to maintain.

Claims (4)

Rotating block attached to the vehicle body and rotatably provided, and a multi-stage stretchable telescopic boom extending to the upper portion of the rotary block and a winch, pulley, wire and hook installed on the telescopic boom to move the object up and down In the boom crane provided with the upper and lower towing means configured, The upper and lower towing means includes a hook guide portion coupled to the boom, the hook guide portion is formed to be coupled to and detachable from the engaging portion of the boom, the engaging portion of the boom is formed at the tip of the final telescopic boom of the extension boom Crane device having a mounting position adjustable hook, characterized in that consisting of a second coupling portion formed on at least one of the expansion and boom extension of the first coupling portion and the remaining expansion boom. The method of claim 1, The hook guide part includes a guide pulley for guiding a wire and two guide plates for rotatably supporting the guide pulley on both sides, and a boom fastening hole formed in an upper portion of the guide plate is formed to face each other, so that the boom A hooking device having a mounting position adjustable hook, characterized in that the hook guide portion is coupled to and separated from the first coupling portion and the second coupling portion through a fastening hole. The method according to claim 1 or 2, The first coupling part includes two molding plates attached to both sides of the lateral end of the boom and a first hook coupling hole formed by drilling the molding plate, so that the boom fastening hole of the hook guide part is the first coupling part. Crane device having a hook for adjustable mounting position, characterized in that detachable to the hook coupling hole. The method according to claim 1 or 2, The second coupling part includes two hook fixing protrusions protruding from the boom at the lower end of the boom to face each other and a second hook coupling hole formed by being drilled on the hook fixing protrusion piece, so that the boom fastening hole of the hook guide part is Crane device having a hook that can be adjusted to the mounting position, characterized in that detachable to the second hook coupling hole.