KR20040027082A - Apparatus for adjusting the inclination angle of an object supported by a main hoist and a sub hoist in a overhead crane - Google Patents

Abstract

PURPOSE: A device for adjusting the tilting angle of an article supported by main and auxiliary hoists of an overhead crane is provided to prevent the article from being tilted over an adjusted angle by adjusting the tilting angle of such an article as a ladle supported by the main and auxiliary hoists. CONSTITUTION: A device for adjusting the tilting angle of an article supported by main and auxiliary hoists of an overhead crane comprises drum rotation transmitters measuring and transmitting the rotation of a wire drum of the main hoist and a wire drum of the auxiliary hoist; first and second rotating shafts(33,34) rotating proportionally to the rotation received from the drum rotation transmitters; a striker(34b) installed to one of the first and second rotating shafts; and a limit switch(35) installed to the other of the first and second rotating shafts and operated by the striker. The first and second rotating shafts are coaxially located. The limit switch stops the main and auxiliary hoists if the striker operates the limit switch.

Description

Apparatus for adjusting the inclination angle of an object supported by a main hoist and a sub hoist in a overhead crane}

The present invention relates to a tilt angle adjusting device for a transport object supported by a main and a winding right of a overhead crane. The present invention relates to a main and a winding right of a lifting crane to prevent a transport supported by a sovereignty and a holding right from being tilted over a preset angle. A tilt angle adjusting device for a supported transport object.

In general, a ladle 140 containing molten iron and molten steel, etc., is transported by the overhead crane 100 having the sovereignty 120 and the sovereignty 130. As shown in FIG. Ladle 140 formed to have a sovereign hook hook 142 and one of the sovereign 130 each provided on both sides of the outer surface of the central portion so that each hook 122 of the sovereignty 120 in pairs can be caught. It has a hook hook hook 144 provided on one side of the lower portion so that the hook 132 can be caught, the position of the hook hook hook 144 is ladle when moving the hook 132 of the bobbin 130 in the vertical direction 140 is set to be tilted around the sovereignty hook hanger 142 hanging on the hook 122 of the sovereignty 120.

A conventional method of transporting and tilting the ladle 140 by using the sovereignty 120 and the complementary right 130 will now be described with reference to FIG. 2.

First, the hook 122 of the sovereignty 120 is hooked on the sovereign hook hook 142 of the ladle 140 to transport the ladle 140 in the state shown in FIG.

Next, to tilt the ladle 140, the hook 132 of the bobbin 130 is hooked on the hook hook hanger 144 of the ladle 140 as shown in FIG. The ladle 140 by the hook 122 of the sovereignty 120 by carrying out a preparatory work to incline and raising the hook 132 of the sovereign right 130 as shown in FIG. Tilt at a predetermined angle around.

However, when the ladle 140 is tilted by such a conventional method, the driver of the overhead crane 100 performs the tilting operation of the ladle 140 while visually confirming the tilt state of the ladle 140. When the driver of the crane 100 incorrectly judges the tilt angle of the ladle 140 and excessively tilts the ladle 140 as shown in FIG. 2 (d), the sovereign hook hook 142 of the ladle 140 is inclined. As the center of gravity of the ladle 140 on the left side of the drawing is changed to the right side of the drawing, the wire hook hook 144 collides with the wire rope 124 of the sovereignty 120 so that the wire rope 124 and the bobbin hook hanger 144 Has a problem of causing an accident that damages the equipment.

In addition, when the ladle 140 is completely overturned as shown in FIG. 2 (d), it is impossible to return the ladle 140 to the initial state as shown in FIG. 2 (b) only by manipulating the overhead crane 100. Since the operation of returning the ladle 140 to the initial state by putting a lot of equipment and a lot of workers to be performed for a long time was also having a problem of lowering the operation efficiency of the equipment.

The present invention is to solve the above-mentioned conventional problems, by adjusting the tilting angle of the transport, such as ladle supported by the sovereignty and the right of protection, of the overhead crane to be prevented from being tilted above the adjusted angle It is an object of the present invention to provide a tilt angle adjusting device of a transport supported by a winding right.

1 is a schematic configuration diagram showing a state in which a tilting operation of a transport is performed using the sovereignty and the sovereignty of a general ceiling crane as a whole;

2 is an explanatory diagram for showing a problem that occurs when the tilting operation of a transport is performed by the prior art;

Figure 3 is a schematic configuration diagram showing a state in which the tilting operation of the transport is performed using the overhead crane equipped with the tilt angle adjusting device of the transport according to the present invention.

4 is a perspective view of the main portion of the present invention;

5 is a front cross-sectional view of FIG. 4;

6 is an exploded perspective view of FIG. 4;

7 is an explanatory view of the operation of the present invention.

※ Explanation of symbols about main part of drawing ※

2: Cab 10: Sovereignty

12, 22: wire drum 13, 23: drive motor

14, 24 hook 16, 26 wire rope

18, 28: Drum rotation amount transmitter 19a, 29a: Drive gear

19, 29: speed converter 20: winding

30: tilt angle adjustment unit 31: cover

32b, 37a: Scale 32: housing

32a: Track 33: first axis of rotation

33a, 34a: driven gear 34: second rotating shaft

34b: Striker 35: Limit switch

37: Disc 37b: Reference Guide

38: indicator 140: ladle

As a technical configuration for achieving the above object, the present invention relates to a lifting crane for supporting and transporting and transporting a shipment by sovereignty and sovereignty. Drum rotation amount transmitter for measuring and transmitting; First and second rotation shafts which are rotated in proportion to the rotation amount provided from the drum rotation amount transmitter and located on a coaxial line; A striker installed at one of the first and second rotation shafts; And a tilting angle adjustment of the main and stabilization support of the overhead crane, which is installed on the other of the first and second rotary shafts and is operated by the striker and includes a limit switch for stopping the sovereignty and the stabilization by the signal. By providing a device.

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

Figure 3 is a schematic configuration diagram showing a state in which the tilting operation of the transport is performed using the overhead crane equipped with the tilt angle adjusting device of the transport according to the present invention.

The overhead crane 1 of the present invention has a sovereignty 10 and a sovereignty 20 similar in structure to those of the prior art, wherein the sovereignty 10 is axially rotated by the drive motor 13. ) And hooks 14 provided in pairs for hanging the hook hooks 142 provided on both sides of the outer surface of the center portion of the ladle 140 and the wire drum 12 are wound around the outer circumferential surface of the wire drum 12. And a wire rope 16 supporting the hook 14 to elevate the hook 14 up and down when the shaft 12 is axially rotated, wherein the winding 20 is axially rotated by the drive motor 23. The wire drum 22, the hook 24 provided to hang the hook hook hook 144 provided on one side of the lower end of the ladle 140, and the wire drum 22 is wound around the outer peripheral surface of the wire drum 22 And a wire rope 26 supporting the hook 24 to raise and lower the hook 24 when the 22 is axially rotated.

The winding 10 and the winding 20 have drum rotation amount transmitters 18 and 28 configured to measure the rotational speed of each of the wire drums 12 and 22 and output the electrical signals as electrical signals. The information about the rotation speed of the wire drums 12 and 22 measured by the drum rotation amount transmitters 18 and 28 is the tilt angle adjusting unit 30 provided in the cab 2 of the overhead crane 1 via wires. Sent to).

The tilt angle adjusting unit 30 will be described in more detail with reference to FIGS. 4 to 6.

4 to 6 are an exploded perspective view showing a tilt angle adjusting unit as a whole, and an exploded perspective view of the main portion, wherein the tilt angle adjusting unit 30 is provided in a substantially box shape and is mounted in the cab 2 of the overhead crane. It has a 32, the upper end of the housing 32 is formed of a transparent material and made of a cover 34 that can be opened and closed by a bolt or the like.

Inside the housing 32, a first rotation shaft 33 extending vertically and a second rotation shaft 34 inserted through the center line of the first rotation shaft 33 are provided, and the second rotation shaft 34 is provided. The upper and lower ends thereof are mounted to the housing 32 to enable axial rotation through the bearing, and the first and second rotation shafts 33 and 34 are relatively axially rotatable. Are supported by each other.

The first rotation shaft 33 and the second rotation shaft 34 may be rotated in proportion to the degree of rotation of the wire drum 12 of the sovereignty 10 and the wire drum 22 of the borehole 20, respectively. The first and second rotary shafts 33 and 34 are provided with driven gears 33a and 34a, respectively, and the driven gears 33a and 34a are driven gears 19a and 29a, respectively. And the driving gears 19a and 29a are respectively mounted on the rotation shafts of the rotation amount converters 19 and 29 installed outside the lower end of the housing 32, and the rotation amount converters 19 and 29 are respectively engaged with each other. ) Is electrically connected to the drum rotation amount transmitters 18 and 28 and rotates in response to the rotation speed information transmitted from the drum rotation amount transmitters 18 and 28. Of course, the interlocking configuration of the drum rotation amount transmitters 18 and 28 and the rotation amount converters 19 and 29 may be variously configured, and as an example, the drum rotation amount transmitters 18 and 28 and the rotation amount converters. (19) and (29) are each provided with rotor windings and the rotor windings connected to each other to supply power to the drum rotation amount transmitters 18, 28 when the rotation is rotated by the principle of electromagnetic induction The whole quantity transducers 19 and 29 are also rotated so as to maintain the same phase angle so that the drum rotational quantity transmitters 18 and 28 and the rotational quantity transducers 19 and 29 interlock with each other.

A disk-shaped support 33b having a predetermined outer diameter is integrally formed on the upper outer surface of the first rotation shaft 33, and the limit switch 35 is installed on the support 33b, and the second rotation shaft ( 34, a striker 34b for operating the limit switch 35 protrudes at a predetermined position on the outer surface. In addition, a plurality of slip rings 33c continuous in the circumferential direction are formed on the outer surface of the central portion of the first rotation shaft 33 in the longitudinal direction, and each of the slip rings 33c is connected to the limit switch 35 via an electric wire. And a brush 36 connected to the internal contact of the slip ring 33c and receiving a signal of the limit switch 35 transmitted through the slip ring 33c and mounted on the housing 32. . Of course, the first rotation shaft 33 and the slip ring 33c have a structure that is electrically separated from each other such that an electrical signal generated from the limit switch 35 is provided only to the brush 36 through the slip ring 33c. Alternatively, the first rotation shaft 33 may be formed of a non-conductive material.

The predetermined length of the upper end portion of the second rotary shaft 34 is provided with a small diameter portion 34c having an outer diameter smaller than the lower portion thereof, and a male thread 34d is formed on the outer surface of the small diameter portion 34c at a predetermined length of the lower portion. Is formed, and the disk 37 is formed by inserting a disk-shaped disk 37 having a predetermined outer diameter through the nut 34e fitted to the male threaded portion 34d to the small-diameter portion 34c. Is fixed to the lower end portion of the small diameter portion 34c by a nut 34e fitted to the male thread 34d of the small diameter portion 34c, and rotates integrally with the second rotation shaft 34.

In addition, a scale 37a is formed on the upper surface of the disc 37 in the circumferential direction, and the indicator 38 directs the scale 37a to the support 33b of the first rotating shaft 33. The reference surface 37b is mounted on the upper surface of the disk 37 so as to be able to recognize the position of the striker 34b on the upper surface of the disk 37. It is preferable.

In addition, the inner surface of the housing 32 is provided with a track 32a formed in a continuous protrusion shape along the circumferential direction and positioned above the disc 37, and an upper surface of the track 32a. The scale 32b is formed in the circumferential direction, and the scale 32b is indicated by the indicator 38.

An upper end of the housing 32 is covered by a cover 31, and the cover 31 is made of a transparent material to observe the inside of the housing 32.

The operation of the present invention having the above configuration will be described.

When the wire drum 12 is rotated by operating the drive motor 13 of the sovereign 10 of the overhead crane, information about the rotation amount of the wire drum 12 is transmitted through the drum rotation transmitter 18 to rotate the speed converter ( 19, the rotation speed converter 19 rotates the first rotation shaft 33 by a rotation amount corresponding to the rotation amount of the wire drum 12.

Likewise, when the wire drum 22 is rotated by operating the drive motor 23 of the spiral winding 20, information about the rotation amount of the wire drum 22 is transmitted through the drum rotation amount transmitter 28 to the rotation speed converter 29. In this case, the rotation speed converter 29 rotates the second rotation shaft 34 by a rotation amount corresponding to the rotation amount of the wire drum 22.

At this time, the indicator 38 installed integrally therewith is rotated by the rotation of the first rotary shaft 33, and the position of the indicator 38, that is, the scale of the track 32a indicated by the indicator 38 ( 32b) represents the height of the sovereignty hook 14 which is lifted up and down by the sovereignty 10, and the disc 37 integrally installed therewith is rotated by the rotation of the second rotating shaft 34, and the indicator 38 The scale 37a of the disc 37 indicated by) represents the relative height, which means how far the bobbin hook 24, which is lifted up and down by the bobbin 20, from the sovereign hook 14. That is, the scale 32b of the track 32a indicated by the indicator 38 indicates the absolute height of the sovereignty hook 14, and the scale 37a of the disc 37 indicated by the indicator 38 indicates the sovereignty. Represents the relative height of the hooked hook 24 relative to the hook 14, which is related to the tilt angle of the ladle hung on the hooked hook and the hooked hook.

Therefore, the driver of the overhead crane or the like reads the scale 32b of the track 32a and the scale 37a of the disk 37 indicated by the indicator 38, and what is the height of the sovereign hook 14? It is possible to know what is the relative height (i.e. the tilt angle of the ladle) of the hooking hook 24 with respect to (14), and the striker 34b of the second rotational axis 34 when the tilt angle of the ladle becomes larger than the set size. Operation of the limit switch 35 of the first rotary shaft 33 stops the operation of the sovereignty 10 and the sovereignty 20 so that the relative height of the sovereignty hook 24 with respect to the sovereign hook 14 is further increased. Do not change any more.

The method of setting the tilt angle of the ladle is as follows.

First, the ladle mounted to hang on the sovereignty hook 14 and the sovereignty hook 24 is tilted at a desired angle, and then the rotational speed converter 29 is disassembled to drive gear 29a provided in the rotational speed converter 29. ) Is spaced apart from the driven gear 34a of the second rotary shaft 34.

Then, the second rotary shaft 34 is rotated to move the striker 34b equipped therein to the position for operating the limit switch 35, and then the rotational volume converter 29 is re-engaged to maintain this state.

Such a state prevents the striker 34b from operating the limit switch 35 when the ladles mounted on the sovereignty hook 14 and the winding hook 24 are tilted up to a set tilting angle to prevent the ladle from being tilted any longer.

In particular, according to the present invention, since the operation of the limit switch 35 by the striker 34b is performed by the relative height of the winding hook 24 to the sovereign hook 14, the ladle 140 as shown in FIG. The limit switch 35 is operated only when the ladle 140 is tilted more than the set angle regardless of whether or not it is located at any height shown by the solid line and the dotted line to prevent the ladle 140 from tipping over.

As described above, according to the tilting angle adjusting device of the main and staple of the overhead crane of the crane according to the present invention, the relative height of the hook when the wire drum of the sovereignty and the wire drum of the sovereignty is rotated to elevate each hook up and down That is, when the tilt angle of the ladle mounted on the hook exceeds the set value, the wire drum of the sovereignty and the wire drum of the sovereignty are stopped to have an excellent effect of preventing the ladle from being rolled over.

Claims (2)

In the overhead crane, which is designed to support and transport the goods by sovereignty and security, Drum rotation amount transmitters 18 and 28 that measure and transmit the rotation amounts of the wire drum 12 of the winding 10 and the wire drum 22 of the winding 20; First and second rotational shafts (33) (34) positioned on the coaxial line and rotated in proportion to the rotational amounts provided from the drum rotation amount transmitters (18) (28); A striker 34b installed on one of the first and second rotation shafts 33 and 34; And A limit switch 35 installed on the other of the first and second rotation shafts 33 and 34 and operated by the striker 34b to stop the sovereignty 10 and the borehole 20 by the signal. The tilt angle adjustment device of the main crane of the overhead crane, which is supported by the winding. The scale (32b) formed continuously in the circumferential direction on the housing (32) installed so as to support the first and second rotation shafts (33), and the disk (37) fixedly installed on the second rotation shaft (33). ) Further comprises a scale 37a continuously formed in the circumferential direction, and an indicator 38 fixedly installed on the first rotational shaft 33 and arranged to simultaneously indicate the scales 32b and 37a. Tilt angle adjuster of the main and stave of the overhead crane.