KR200218118Y1 - Direction control apparatus for crane basket - Google Patents

Abstract

The present invention relates to a direction control device for a basket for a crane, and is a direction control device for a basket for a crane that can be used in any place by improving the limitation and safety of the range of the conventional design. When rotating the basket 50 to a desired position, there is a rotating device that allows the rotation by a small force at a high reduction ratio by using a worm gear (3), the adjustment of the vertical angle is the hydraulic cylinder 20 and the check attached thereto The valve 21 can be fixed at an appropriate position. The rotating device includes a worm, a worm wheel, a first sprocket 4 attached to the worm wheel shaft vertically, the first sprocket 4 and a chain ( 6) a second sprocket (5) connected to the second sprocket (5) is coupled to the vertical axis of rotation (8) and the upper surface of the second sprocket (5) is coupled to the bracket (2) of the worm gear Rotating together according to the rotation, the upper end of the bracket (2), the shock absorber 10, one end of the hydraulic cylinder 20 is condensed and the other end is condensed with the arm rear end (1 '') in a desired position Always keep the basket 50 level and fill Or it is to enable the vibration absorption. And in order to be able to operate in a wider range of angles in order to be able to use a desired position by drilling a plurality of holes in the base block 30 installed at the end of the arm front end (1 '), it is easy to operate The safety and reliability are improved, allowing the operator to work safely, as well as wider range of rotation and vertical angle adjustment, which expands the usable area.

Description

Direction control apparatus for crane baskets {Direction control apparatus for crane basket}

The present invention relates to a direction control device for a basket for a crane, and more specifically, to adjust the direction of the basket for the crane to enable the vertical angle adjustment and rotation for fixing the basket in a desired position for the convenience of operation Relates to a device.

In the Republic of Korea Utility Model No. 0177188, the direction control device of the basket for crane has been registered.

Hereinafter, the prior art will be described with reference to FIG. 1.

Install a bracket (10) bent in a c-shape and protruding in a c-shape at an appropriate position around the top of the basket (1), and rotate the lower end (2 ') of the crane arm (A) front end (2) at the bottom of the bracket. It is fixed by the pin 19 and both ends of the front end of the front end portion 2 and the upper end of the bracket 10 by the hydraulic or pneumatic pressure so that both ends are condensed by the rotary pins 20, 20a, 20 '(20a'). The side jacks 13 and 13 ′ which are stretched and installed, and another center jack 13 ″ are fixed to the upper center of the arm A and the upper center of the bracket 10 by rotating pins 21 and 21a. To stop expansion and contraction at a certain length by installing a stopper 17 operated by a screw or hydraulic or pneumatically in the center of the jack 13 '', and a vertical rotating shaft 3 at the bottom of the bracket 10. Fixingly installed, the lower end 18 around the vertical axis of rotation 3 is screwed in such a way that the lower shaft 18 is fixed to the inner bottom of the basket 1 so as to be rotatable. Vertical rod (4) it has an upper peripheral member popularity The gear 5 is fixedly installed, but the chain gear 5 and the small chain gear 7 connected by the chain 6 are installed to interlock with the deceleration worm gear 8 capable of forward and reverse rotation, and the deceleration is performed by the worm gear. The front of 8) consists of installing any one of the operation knob 14 or the motor.

FIG. 2 is a cross-sectional view of the vertical shaft 4 and the vertical rotation shaft 3 of the prior art, and shows the engaged state thereof.

In the prior art, the rotation of the basket 1 by the operation of the worm gear 8 is the bar by the rotation of the vertical shaft 4 by the screwing of the vertical shaft 3 and the vertical shaft 4 The gasket 1 can be rotated to a desired position.

The screwed vertical rotary shaft (3) and the vertical shaft bar (4) is a structure by coupling the female screw and the male screw, and becomes inoperable when the thread wears, and also when the action of the high load torsion and bending loads There is a problem that the wear is further promoted can not be used for a long time.

In addition, it is easy to process the threaded portion on the vertical rotation shaft (3) and the vertical shaft bar (4)

There is a problem of not lighting and lighting that is not easy to replace when broken.

On the other hand, the chain gear (5) receiving the rotational force of the worm gear (8) is fixed only around the upper surface of the vertical shaft (4) has a problem in its rigidity and the damage caused by the occurrence of cracks in the contact portion during long-term use There is concern.

And because of the rotation by the screw coupling there is a limit to the rotatable range, there is a possibility that the vertical axis of rotation (3) and the vertical shaft (4) can be separated by excessive rotation there is always a risk in use.

In the vertical angle adjustment, the center jack 13 ″ and the side jacks 13 and 13 ′ are operated, so that the basket 1 may be difficult to maintain completely horizontal under poor working conditions.

Therefore, the present invention was devised to solve the above problems, using a worm gear and a chain transmission device as a device for the rotation of the basket, and the combination of the vertical axis of rotation and the vertical axis as the center of rotation by sliding the fluid lubrication It is an object of the present invention to improve the durability of the bearing type, and to provide a direction control device for a basket for a crane capable of freely rotating the basket.

And, in order to be able to use in any working condition, the horizontal adjustable range to make the work easier, and in the work of the operator, the basket of the crane for the safe and convenient to perform the desired work Another object is to provide a direction control device.

1-a perspective view of a basket direction control device for a crane according to the prior art.

Figure 2-combined sectional view of the vertical shaft and the vertical axis of rotation according to the prior art.

3-perspective view of the basket direction control device for a crane according to the present invention.

Figure 4-combined sectional view of the vertical shaft and the vertical axis of rotation according to the present invention.

Figure 5-side view of the base block according to the present invention.

<Description of the reference numerals for the main parts of the drawings>

1: Arm 1 ′: Arm Shear

1 '': Arm rear end 2: Bracket

3: worm gear 4: first sprocket

5: second sprocket 6: chain

7: vertical shaft 8: vertical axis of rotation

9: lower cover 10: shock up shock absorber

20: hydraulic cylinder 21: check valve

23: bush 30: base block

31: base block coupling pin 32: fastener

33: rotary pin 40: rotary knob

50: basket 60: oil supply port

70: support member 80: parallel axis

The present invention for achieving the above object, in the basket attached to the crane having a base block directly coupled to the crane, the basket and the arm bent at a predetermined angle connecting the base block, the worm gear, the rotation by the worm gear The first sprocket, the second sprocket, and a pair of shock absorbers and check valves are connected to the rotary device consisting of a chain connecting the two sprockets and the lower pin of the arm and the bracket to absorb shock and vibration A base block is formed by fastening the hydraulic cylinder for adjusting the up and down angle of the basket by opening and closing with a rotating pin so as to be rotatable at the end of the front end portion of the arm, and a plurality of fasteners used as auxiliary means for horizontal adjustment of the basket. The second block of the rotating unit and the base block which is again fastened to the front end of the arm by a coupling pin; A vertical cover that is fixedly connected to a lower surface of the racket and a vertical shaft that surrounds the outside of the vertical shaft and serves as a sliding bearing, and a lower cover and the second sprocket that are fixedly attached to an open portion of the lower end of the vertical shaft and support the vertical shaft. One end of the pair of shock-absorbing shock absorbers and the hydraulic cylinder which are vertically coupled and rotated together at the upper surface of the pair and connected to the lower end of the rear end portion of the arm by a rotation pin and fastened to a parallel axis and arranged in a straight line. And the other end of the pair of shock-absorbing shock absorbers and the hydraulic cylinder are fastened to the arm part to adjust the basket's vertical angle and allow the 360 ° rotation of the basket's direction control device. It is a technical point.

Therefore, for workers working in a basket suspended from a high crane, safety should be taken into consideration so as to be able to work comfortably, and it is desirable to allow the basket to be rotated in a desired direction and horizontally adjusted in any position.

An embodiment of the present invention devised to meet the above requirements will be described in detail with reference to FIGS. 3 to 5.

Figure 3 is a perspective view of a direction control device for a basket for a crane according to the present invention, Figure 4 is a cross-sectional view of the combined shaft and the vertical rotary shaft according to the present invention, Figure 5 is a side view of the base block according to the present invention to be.

As shown, the present invention is largely a basket 50 having a space in which a worker can work inside, a vertical shaft rod 7 fixed to the basket 50, a vertical rotation shaft 8, a worm gear ( 3) and the sprocket 4, 5, the hydraulic cylinder 20, the shock absorber 10, the arm 1, the base block 30.

First, a rotating device consisting of the operation of the worm gear 3 and the sprockets 4 and 5 will be described.

In the embodiment of the present invention, the worm gear (3) is used to generate the rotational force for rotating the basket 50, the worm gear (3) can obtain a large reduction ratio even with a small capacity and weight, and prevents reversal It can be used as a device.

In the worm gear 3, the worm is protruded in both directions, and the rotation knob 40 is attached to the protruding shaft so that the basket 50 can be rotated on either side.

In addition, in the embodiment of the present invention to reduce the ratio of the worm gear (3) to 1:60 so that the basket 50 can be rotated with a small force, protruding shaft is formed in the worm wheel interlocked with the worm At its end, the first sprocket 4 is mounted.

On the other hand, the second sprocket 5 is mounted on the upper portion of the vertical rotation shaft 8 to be described later and connected to the first sprocket 4 and the chain 6 to receive the rotational force generated by the worm gear 3. It is configured to be.

Next, the vertical shaft 7 will be described.

The vertical shaft rod 7 is fixedly connected by the basket 50 and the plurality of support members 70, the hollow shaft is formed so that the vertical rotation shaft 8 to be described later is built in, the basket 50 and Together with the vertical rotating shaft (8) to play a role of sliding bearings, and the upper and lower parts of the vertical shaft (7) is provided with an oil inlet (60) so that the lubricant can be injected or refilled for smooth rotation At the same time, the lower cover 9 for sealing is installed on the lower end surface which is hollow.

Next, the vertical rotation shaft 8 will be described.

The vertical axis of rotation (8) is a hollow shaft, both ends of the diameter of the outer diameter is reduced, the lower portion that supports the vertical axis of rotation (8) and is fixed to the lower inner diameter surface and the end surface of the lower end of the vertical axis (7) The cover 9 is inserted and fixed. The second sprocket 5 is fixedly attached to the portion of which the outer diameter of the upper portion of the vertical rotation shaft 8 is reduced, and the bottom surface of the bracket 2 is fixed to the extra protrusion.

Next, the bracket 2 will be described.

The bottom of the bracket (2) is fixed to the vertical axis of rotation (8), one side and top of the bracket (2) is open, the one end of the rear end of the arm (1) is located in the opened one side up and down It is fastened to the bracket (2) by a rotation pin 33 so as to be movable.

A predetermined hole is formed in both symmetrical side surfaces of the upper portion of the bracket 2 so that one parallel shaft 80 is inserted, and the hydraulic cylinder 20 having the bush 23 in the center of the parallel shaft 80 is formed. The piston is fitted so that it can flow up and down.

In addition, the parallel shaft 90 protrudes to the left and right of the bracket 2, and one end of each shock up shock absorber 10 is condensed to the portion thereof, and the arm 1 is operated by the operation of the hydraulic cylinder 20. It is configured to absorb shock when moving up and down.

Next, the base block 30 provided in the front end part 1 'of an arm is demonstrated.

Holes are formed in four corners of the square bottom plate of the base block 30 that are fastened to the crane by bolts, etc. A plurality of fasteners 32 are respectively provided on the upper portions of the diamond plates facing each other attached to the upper surface. It is formed is coupled to the hole formed in the arm front end (1 ') and the base block coupling pin (31).

Accordingly, the operator selects a suitable position according to the working conditions and selectively fastens the base block 30 and the arm front end 1 ', and the bracket 2 and the arm front end 1 at the bottom of the lozenge plate. ') Is fastened by the rotation pin 33 to be rotatable.

In the shock up shock absorber 10 and the hydraulic cylinder 20 which can move the arm 1 up and down, the operation of the hydraulic cylinder 20 is to open and close quickly as the check valve 21, the hydraulic The cylinder 20 and the shock absorber 10 are well known in the art, so detailed description thereof will be omitted.

Hereinafter, the operation principle of the present invention will be described.

The operator selects an optimal hole in consideration of the work position among the plurality of fasteners 32 formed in the base block 30 for work, and then fixes it with the arm front end 1 'and the base block coupling pin 31. To the crane.

On the other hand, since the position of the basket 50 should also be adjusted as the work position changes during the work, the work is performed while changing the position of the top, bottom, left and right as necessary.

To this end, the operator properly adjusts the horizontal position by using the check valve 21 of the hydraulic cylinder 20 installed at the rear end portion 1 '' of the arm, and the shock up bar 10 moves to the vertical movement of the arm 1. It absorbs vibrations so that the shaking can be minimized.

After adjusting the horizontal position, in adjusting the left and right positions of the basket 50, the operator first rotates the handle 40 attached to the worm gear 3 to the chain 6 which interworks with the worm gear 3. The rotational force is transmitted to the second sprocket 5 by the vertical shaft 7 and the basket 50 around the vertical rotation shaft 8 fixed to the lower portion of the second sprocket 5 360 ° can be rotated, smooth operation is possible.

As described above, the present invention relates to a direction control device for a basket for a crane, as a device for enabling safe and convenient operation, as well as horizontally adjustable up and down and left and right, and a plurality of holes in the base block. Formation is possible to work while maintaining the horizontal up and down under any working conditions has the effect of improving the workability.

Since safety is most important for the worker who is installed on a high crane and needs to perform work, there should be no shaking, etc. when adjusting the position of the basket as described above. As a cylinder, it is possible to quickly adjust horizontally up and down, and the shock absorber is provided to alleviate the impact, so that the operator can work safely.

On the other hand, unlike the conventional screw coupling in the configuration of the rotating shaft portion for the rotation of the basket in the sliding bearing type to enable the rotation at any angle by fluid lubrication also has the effect of reducing the occurrence of failures.

Claims (3)

In the basket 50 attached to the crane having a base block 30, a basket 50 directly coupled to the crane and an arm 1 bent at a predetermined angle connecting the base block 30, Connecting a worm gear 3 for rotating the basket 50, a first sprocket 4, a second sprocket 5, and the two sprockets 4 and 5 rotated by the worm gear 3 Rotating device consisting of a chain (6) to be; A pair of shock absorbers 10 connected to the rear end portion 1 '' of the arm and the bracket 2 by a rotation pin 33 to absorb shocks and vibrations; Hydraulic cylinder 20 for adjusting the vertical angle of the basket 50 by opening and closing the check valve 21; The base block is formed with a plurality of fasteners 32 fastened by a rotary pin 33 so as to be rotatable at the end of the front end portion 1 'of the arm and used as an auxiliary means for horizontal adjustment of the basket 50. A base block 30 coupled to the front end portion 1 'of the arm by a coupling pin 31; A vertical rotation shaft 8 fixedly connected to a lower surface of the second sprocket 5 of the rotating device; A vertical shaft rod 7 surrounding the outside of the vertical rotation shaft 8 and serving as a sliding bearing; A lower cover (9) fixedly attached to an open portion of the lower end of the vertical shaft (7) and supporting the vertical rotation shaft (8); Vertically coupled on the upper surface of the second sprocket (5) is rotated together, is connected to one end of the arm rear end (1 ″) by the rotary pin 33, the upper portion of the parallel shaft 80 And a pair of shock-up shock absorbers 10 coupled to one end of the hydraulic cylinder 20 and a pair of shock-up shock absorbers 10 arranged in a straight line. The other end of the hydraulic cylinder 20 is fastened with the arm rear end 1 ″, the crane bar, characterized in that 360 ° rotation is possible by adjusting the vertical angle of the basket 50 and the operation of the worm gear (3). The direction control of the gasket. The apparatus of claim 1, wherein the rotating device protrudes the shafts of the worm gears on both sides to engage the rotary knobs to operate in both directions. The vertical shaft bar (7), characterized in that the upper and lower portions of the vertical shaft bar (7) has an oil supply port (60) for supplying lubricating oil for smooth rotation of the vertical axis of rotation (8). Direction control device for the basket for crane.