JPS60122692A - Beam expansion structure of overhead travelling crane - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a beam extendable structure for an overhead crane in which a club trolley suspends and supports a telescoping beam for guiding a carrier up and down.

In a conventional overhead crane of this type, for example, as shown in Fig. 1, a girder 2 is mounted on a pair of rails (J) laid parallel to each other in a building so that it can run, and is installed on the girder 2. A club trolley 4 is mounted on the rail 3 so as to be movable in a direction perpendicular to the traveling direction of the girder 2. A fixed frame 5 of a telescopic beam is suspended and supported by the club trolley 4, and a movable frame 6 of the telescopic beam is inserted into the internal space of the fixed frame 5 so as to be able to be lowered. A carrier 7 is connected to the lower end of the movable frame 6. As shown in FIG. 2, the movable frame 6 is suspended from a hoisting device 10 provided on the upper surface of the club trolley 4 via a hanging frame 9 made of a wire rope. The carrier 7 is raised by winding up the hanging material 9 with this hoisting device 10, and is lowered by unwinding it.

However, in this conventional overhead crane, as shown in FIG.
Since the guide rollers 21 and 22 are pivotally supported, the distance between the guide rollers 21 and 22 in the north direction is constant regardless of the amount of elevation of the movable frame 6. In view of the above-mentioned circumstances, this invention has the drawback that when the club trolley 4 is moved laterally with the club trolley 4 lifted up, the lateral movement of the carriage 7 is relatively large. The object is to effectively suppress the movement of the movable frame with respect to the fixed frame when moving the movable frame.

In order to achieve this object, the present invention has a force-id roller that is rotatably supported on the outer peripheral surface of the movable frame at the lower part of the fixed and redundant frame, and at the same time, the inner peripheral surface of the fixed frame is mounted on the upper part of the movable frame. A force idle roller that is brought into rolling contact with a surface is rotatably supported around a horizontal axis.

With this configuration, the higher the movable frame is raised, the wider the gap between the lower power idle rollers and the more effective the guide rollers are at suppressing the movable frame from rolling. When moving, it is stable and stable.
Moreover, it can be moved without shaking sideways. In this way, when lifting an object, moving it horizontally after lifting it, or lowering the lifted object, the horizontal sway of the movable frame is extremely small, making it highly safe and allowing objects to be moved vertically. This results in an optimal overhead crane that can raise and lower objects and move the lifted objects laterally.

Hereinafter, the present invention will be explained in detail based on embodiments shown in the drawings.

FIG. 3 is a front view showing the entire overhead crane according to the present invention. This overhead crane has two rails running in the front and back directions along the left and right walls in the upper half of the building.
A girder 2 is mounted on the girder 2, and a pair of front and rear rails 3 running in the left-right direction are provided on the upper surface of the girder 2, and a club trolley 1 is guided by these rails 3 and moved in the left-right direction. It is mounted so that it can run. Kula 710su・
・A solid commode frame 5 or a club trolley 1, which is a vertically angular, telescopic beam, is suspended and supported on the 1.

In other words, Club Trolley: 1 in 4! The hanging support I) is extended to a suitable height on the upper surface of the club trolley '1. Thereby, the upper limit of the rise of one or more movable frames 6 inserted into the internal space of this fixed frame 5 so as to be able to rise and fall is increased, and the lift can be increased. A carrier 7 is connected to the lower end of the movable frame Ga at the tip.

As shown in FIG. 11, a hanging member 9 made of a chino is connected to the upper end of the movable frame 6a at the tip.
A winding device 10 for winding and winding is suspended and supported on the upper part of the fixed frame 5 via a beam 12. This winding's winding's winding wheel 13 of the winding's winding device 8 is composed of a sprocket/to, and the hanging material 9 hoisted up by the winding's winding's winding ring 13 is moved to the outside of the fixed frame 5 by a chain guide 14. It is guided and suspended along the outer surface of the fixed frame 5. in this way,
By providing the hoisting device 10 at a position away from the top surface of the club trolley 4, the top surface of the club trolley 4 is provided with a follower.
In place of the plane area for laying the hoisting device 10 that has been used in the past, a smaller plane area is required for inserting the fixing frame 5, and the area of the club trolley can be reduced. As a result, the movement #@1 of the club trolley 4 can be made larger and the space utilization rate can be increased.

In addition, when winding up the winding, the winding point does not move at all, unlike when winding a wire or chain onto a drum, so no horizontal component force is applied to the movable frame via the hanging member 9, which is extremely Stable hanging material! ] can be wound and rewinded.

As is clear from the above, the telescopic beam is composed of a fixed frame 5 and a movable frame 6 inserted into the fixed frame 5 so as to be movable up and down, and
A plurality of movable frames (two in this case) are used. In this way, if the movable frame 6 is configured with a multiple cylinder frame that expands and contracts in two or more stages, it can be used for a club, for example.

The movable frame is 1 for the top surface height of 71.3 Ofilm.
J
The 97F of aTh reactor 7 was heated to about 4120 va.

At the lower end of the fixed frame 5, as shown in FIG. By rolling these force idle rollers 16 into contact with the outer surfaces of each of the four peripheral walls of the moving frame 61), the guide rollers 16 are able to move the moving frame 61) up and down. At the same time, the movable frame 613 is placed at the lower end of the fixed frame 5a to prevent it from rotating around the vertical axis.Furthermore, a flat bracket 17 is attached to the upper end of the movable frame 6b. Guide rollers 18 which are brought into rolling contact with the inner surface of each peripheral wall of the fixed frame 5 are pivotally supported through the guide rollers 18, and these guide rollers 18 guide the upper end of the movable frame 61) up and down, and also guide the upper end of the movable frame 61). One end is a fixed frame 5
It is rotated around the vertical axis by 1).

In this way, the movable frame 61) is inserted into the internal space of the fixed frame 5 so that it can be pulled down and not rotated relative to it.

In this way, the upper guide roller 18 is supported by the upper end of the movable frame 61, and the lower guide roller 16 is supported by the fixed frame 5.
When the carrier is supported by the movable frame 6, the carrier
The larger the insertion amount of 9 into the fixed frame 5a of 1]
2. Since the interval between the lower guide rollers 1;] and 16 is expanded, the swinging movement of the I+f moving frame 61] with respect to the fixed frame 5 is more effectively prevented, and the swinging of the carrier 7 can be reduced.

Further, each of the four walls of the movable frame 6b is provided with a stopper 19 projecting outward at an appropriate height from one end thereof. 4 of fixed frame 5
A stop 20 for receiving the stopper 19 from below is provided at the lower end of each wall of the surface, and this stop 20
9 prevents the movable frame 6b from being removed from the fixed frame 5.

The tip movable frame 6a can be raised and lowered into the internal space of the movable frame 61) in the same manner as the movable frame 61] is inserted into the fixed I frame 5, and cannot be rotated in phase t=J, and cannot be removed. It is inserted uncontrollably. Reference numeral 21 is an upper force idle roller, 22 is a lower guide roller, 23 is a striker, and 24 is a striker. A stopper 25 is provided at one end of the movable tip frame 6b to catch the two ring edges of the movable tip frame 6 in order to prevent the movable tip frame 6a from escaping upward.

Note that the carrier 7 is provided with a vacuum suction pad 26 and a mug 27, as shown in FIG. This carrier 7
A motor 28 that rotates the glue 7 mug 27 and the carrier 7
The cabtire cord 29 for power supply to the club trolley 4 passes through the inside of the fixed frame 5, the movable frame 61) and the movable end frame 6a, together with the two vacuum hoses 30 connected to the vacuum suction band 26. The club trolley 4 is guided upward and fixedly supported by a stand 31 erected on the club trolley 4 . A pulley 34 is provided on the stand 31, and a cabtyre foot is attached to the stand 31.
1" 29 and the vacuum hose 30 are wrapped around this pulley 34 and hung down in a U-shape, and then attached to the stand 31.
Fixed. A weight 35 is suspended from this U-shaped suspension portion via a pulley 36 to keep the cabtyre cord 29 and vacuum hose 30 taut so that they do not get tangled. As a result, the winding reel for winding up the cabtyre hood 29 and the vacuum hose 3() and the motor that drives it can be omitted, making the configuration simple and inexpensive, as well as reducing running costs. . 37 is a club trolley drive motor, 38 is a girder drive motor, 39 is a maintenance step, ・to is a rack for girder position detection, 41 is an enfug for girder position detection, ・12
4 is an encoder for detecting the position of the club trolley, and 43 is a control panel. Although not shown, a compressor for vacuum suction and a vacuum tank are mounted on the club trolley.

With this configuration, the tip movable frame 6a and the movable frame 61)
The higher you move the tip 11] moving frame 6 a-
Double guide rollers 21 and 2 between 'iEf moving frame 61)
2 and the distance between the fixed and movable frames 5 and 61 and the lower L guide roller 1G. The guide rollers 21 and 22 enhance the effect of suppressing sideways movement of the movable frame at the tip, so when lifting a heavy object up high and moving it sideways, you can move it stably and without shaking sideways. I can do it. In this way, you can
．． ) When lifting, moving horizontally while lifted, or lowering a portable object, the horizontal movement of the tip moving frame 6-1 can be minimized to ensure safety. The best overhead crane for lowering objects high and vertically and moving them horizontally is a))
It will be done.

Of course, the present invention is not limited to the above-mentioned embodiment, and for example, the carrier 7 can be arbitrarily selected from various known carriers such as forks and tanks. Further, the suspension is not limited to a chain, but any wire rope, belt, or any other material used for power transmission may be used.

- As mentioned above, the beam of the overhead crane according to the present invention (according to the structure, the club) [7.
The IF movable frame is movably inserted into the internal space of the fixed frame of the telescopic beam, and a guide roller that is brought into rolling contact with the outer peripheral surface of the movable frame is pivotally supported at the lower part of the fixed frame.
By pivotally supporting a force idle roller that is brought into rolling contact with the inner circumference of the fixed frame in the F section, the force idle roller can prevent the movable frame from rolling. The higher the level of safety, the higher the safety level, and the higher the safety, the more you can move heavy objects directly to the pond. - Ideal for overhead cranes that lower.

[Brief explanation of the drawing]

Figures 1 and 2 show a conventional example, Figure 2 is a front view showing the whole, Figure 2 is a longitudinal sectional front view of the main part, and Figures 3 to 5 are an embodiment of the present invention. 3 is a front view showing the whole, FIG. 4 is a longitudinal sectional front view of the main part, and FIG. 5 is a bottom view of the carrier. 4. Club trolley, 5. Telescopic beam fixed frame, 6a.
...Movable end frame, 61]...Movable frame, 7...Carrier,
9...Hanging oil, 10...Volume" Double-hanging device δ, 16.
18/21/22...Power hydraulic roller procedure amendment (method)? Date of March 1980 1, Indication of the case 1988 Patent Application No. 228989 2, Title of the invention Beam telescoping structure of an overhead crane 3, Relationship with the person making the amendment case Special i'F applicant address Himeji 219, Hojo, City Name) Shinwa Giken Co., Ltd. 4, Agent 8 Contents of the amendment As shown in the attached sheet

Claims (1)

[Claims] (1) In an overhead crane in which a fixed frame of a telescopic beam is suspended and supported by a club trolley, a guide roller that is brought into rolling contact with the outer peripheral surface of the movable frame of the telescopic beam is pivotally supported at the bottom of the fixed frame or the movable frame. A beam expansion and contraction structure of an overhead crane that pivots on rollers.