JPH0549781U - Overhead crane equipment - Google Patents

Abstract

(57) [Summary] [Purpose] It is small and lightweight and can work outside the span length of the girder. [Constitution] In an overhead crane device in which a child trolley 6 is movably arranged in parallel to the girder 4 via a parent trolley 5 in the girder 4, a hoisting winch 37A, 37B arranged in the girder 4 and a hook 32 from the child trolley 6 are arranged. A hoisting device 36 is configured with the hoisting rope 35 that supports the hoisting rope 35, and the hoisting rope 35 is wound around the hook supporting sheave 34 at both ends of the parent trolley 5 from the left and right hoisting sheaves 31A and 31B. The left and right center sheaves with parent trolleys 39A and 39B provided at the center of the parent trolley 5 via the left and right side sheaves 38A and 38B, respectively, and the girder 4
Left and right side sheaves with girders 40A, 40B on the left end of
Each of the winding winches 37 is wound via the above.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an overhead crane device capable of lifting and lowering a load even outside the movement stroke of a trolley that moves a girder.

[0002]

[Prior Art]

 Conventionally, an overhead crane device that can load and unload loads even outside the travel stroke of a trolley that moves a girder is a sliding crane that is used, for example, at freight platforms at stations for loading and unloading freight cars and trucks. There is. In this slide-out crane, a movable girder that was movable in the length direction of the girder was provided at the bottom of the movable girder, and a traverse trolley equipped with a hoisting device was provided on this movable girder. .

[0003]

[Problems to be solved by the device]

 However, since the above-mentioned slide-out type crane is equipped with a large movable girder and a hoisting device is installed on the traverse trolley, the unbalanced load applied to the girder is large and the girder and the whole are large. .

An object of the present invention is to solve the above problems and to provide a ceiling crane device that has a small unbalanced load and can be downsized as a whole.

[0005]

[Means for Solving the Problems]

 In order to solve the above problems, the overhead crane device of the present invention has a girder whose both ends are movably guided along a traveling rail, and a parent trolley having guide rails along the length of the girder is used as a girder. A child trolley having a hoisting sheave is movably provided on the guide rail, and the hoisting device of this crane supports the hoisting winch arranged on the girder and the hook from the child trolley. A parent trolley having one end at one end of the parent trolley from the one end side winding sheave for winding the cord from the support sheave of the hook to the winding winch. It is wound around the center sheave with the parent trolley provided at the center of the parent trolley via the side sheave with the one end. With a girder provided on one end of the girder and a parent trolley provided on the other end of the parent trolley from the other end side hoisting sheave while being wound on the hoisting winch via one end side sheave It is wound on the other end side center sheave with a parent trolley provided in the central part of the parent trolley via the other end side sheave, and is further wound through the other end side sheave with a girder provided on the other end of the girder. It is configured to be wound around a winch.

[0006]

[Action]

 According to the above structure, a heavy hoisting winch is provided on the girder to support the hook suspended on the child trolley via the rope and sheave so that the hook can be raised and lowered regardless of the movement of the child trolley and the parent trolley. Since it is configured, the trolley and the parent trolley can be configured to be lightweight, and an unbalanced load applied to the girder can be reduced. Therefore, the girder can be lightweight as much as the strength is small, and the overall size can be downsized. .

[0007]

【Example】

 An embodiment of an overhead crane device according to the present invention will be described below with reference to the drawings. As shown in FIGS. 1 and 2, a girder 4 is stretched between traveling carriages 3 movably arranged on the traveling rails 2 of the support beam 1, and the length below the girder 4 is set. A parent trolley 5 that is movable along the direction is arranged, and a child trolley 6 that is movable along the length direction of the girder 4 is arranged on the parent trolley 5.

First guide rails 7A and 7B are provided on both sides of the lower part of the girder 4 in the longitudinal direction of the girder 4, and the frame 5a of the parent trolley 5 has upper surfaces of the first guide rails 7A and 7B. First guide rollers 8A and 8B are provided so as to contact and be guided to the lower surface and the lower surface, respectively. A second guide rail 9 having a predetermined length is arranged parallel to the girder 4 on the lower surface of the frame 5a of the parent trolley 5, and the frame 6a of the child trolley 6 is guided by the second guide rail 9. A second guide roller 10 is provided.

The first moving device 11 of the parent trolley 5 is composed of a moving winch 12 provided on the girder 4 and moving cords 13A and 13B wound around the winch drum. The moving rope 13A connected to the left end of the frame 5a is wound around the winch drum of the moving winch 12 via the left turning sheave 14A and the tension sheave 15A at the left end of the girder 4, and the tip is connected to the right end of the frame 5a. The moving rope 13B is wound around the winch drum of the moving winch 12 via the right turning sheave 14B and the tension sheave 15B at the right end of the girder 4.

As shown in FIGS. 3 and 4, the second moving device 21 of the child trolley 6 is composed of a geared motor 22 and a rack and pinion mechanism 23, and includes a geared motor 22 arranged on both front and rear sides of the frame 6a. A drive gear 24 is attached to the output shaft, and a pinion 23a is provided below the second guide rail 9 and interlockingly connected via a passive gear 25. A rack 23b with which the pinion 23a meshes is attached to the lower surface of the second guide rail 9.

Two sets of left and right winding sheaves 31 A and 31 B are arranged on the child trolley 6, and two sets of hook supporting sheaves 34 are provided on a hook supporting frame 33 having a hook 32, and a pair of hoisting cables 35 are interposed. It is hung up and down freely. The hoisting device 36 for the hook 32 includes a pair of hoisting winches 37A and 37B arranged on the left and right sides of the girder 4, and a hook of the hoisting winch 37A and 37B that supports the hook 32 via a plurality of sheaves. And the hoisting cable 35. That is, as shown in FIG. 5, one end from the hook supporting sheave 34 is placed from the left hoisting sheave 31A to the left end side of the parent trolley 5 when the hoisting rope 35 is wound from the hook supporting sheave 34 to the hoisting winch 37. It is wound around the left center sheave with parent trolley 39A provided at the center of the parent trolley 5 via the provided left side sheave with parent trolley 38A, and further through the left side sheave with guard 40A provided at the left end of the girder 4. It is wound around the drum of the winding winch 37A. On the other hand, the other end of the hoisting cable 35 has a right center with parent trolley provided at the center of the parent trolley 5 via the right side sheave 31B provided on the other end side of the parent trolley 5 and the right side sheave 38B provided with parent trolley. It is wound around the sheave 39B and further wound around the drum of the hoisting winch 37B via a right side sheave 40B with a girder provided at the other end of the girder 4.

Therefore, by driving the drums of the hoisting winches 37A and 37B, the hook support sheave 34, that is, the hook 32 can be moved up and down through the hoisting line 35, and when the parent trolley 5 moves, the parent trolley 5 moves. Attached sheaves 38A, 38B, 39A, 39B, left and right winding sheaves 31A, 31B and hooks Only the relative movement of the hoisting cable 35 via the sheave supporting sheaves 34 does not cause the hooks 32 to move up and down, and further the movement of the child trolley 6. At that time, the hook 32 does not move up and down only by the relative movement of the elevating cable 35 through the left and right winding sheaves 31A and 31B and the hook supporting sheave 34.

In the above configuration, when handling a load outside the stroke A of the conventional trolley, the first moving device is driven to move the parent trolley 5 to the end of the girder 4, and the child trolley 6 is moved to the parent trolley 6. By moving to the end of the trolley 5, the hook 32 is moved to the outside of the stroke A in the width direction of the conventional overhead crane device, and within a range of the stroke B which is 1/2 of the movement stroke of the child trolley 6. Can work. Further, in this overhead crane device, since the first moving device 11 of the parent trolley 5 and the hoisting winches 37A and 37B of the hoisting device 36 of the hook 32 are arranged on the girder 4, the weight of the parent trolley 5 and the child trolley 6 is reduced. Therefore, the unbalanced load applied to the girder 4 is reduced, and the entire size can be reduced.

[0014]

[Effect of the device]

 As described above, according to the overhead crane device of the present invention, the hoisting device is provided on the girder to support the hook suspended on the child trolley via the rope and the sheave to move the child trolley and the parent trolley. Since the hooks can be raised and lowered independently of each other, the trolley and parent trolley can be made lightweight, and the unbalanced load on the girder can be reduced, so that the girder can also be made lightweight as much as the strength can be reduced. The overall size can be reduced to provide a compact overhead crane device.

[Brief description of drawings]

FIG. 1 is an overall front view showing an embodiment of an overhead crane device according to the present invention.

FIG. 2 is a cross-sectional view of the overhead crane device.

FIG. 3 is a side view of the same child trolley.

FIG. 4 is a front view of the same child trolley.

FIG. 5 is a configuration diagram of hoisting and hoisting ropes of the hoisting device.

[Explanation of symbols]

 2 Traveling rail 3 Traveling carriage 4 Girder 5 Parent trolley 6 Child trolley. 7A, 7B 1st guide rail 8A, 8B 1st guide roller 9 2nd guide rail 10 2nd guide roller 11 1st moving device 12 Moving winch 13A, 13B Moving rope 21 2nd moving device 31A, 31B Left and right hoisting sheave 32 Hook 34 Hook support sheave 35 Lifting line 36 Hoisting device 37A, 37B Hoisting winch 38A, 38B Left and right side sheave with parent trolley 39A, 39B Left and right center sheave with parent trolley 40A, 40B Left and right side sheave with girder

Claims (1)

[Scope of utility model registration request] 1. A girder whose both ends are movably guided along a traveling rail, is provided with a parent trolley having guide rails along the length direction of the girder so as to be movable along the girder, and is wound around the guide rail. A child trolley having a sheave for movement is movably provided, and a hoisting device of this crane is constituted by a hoisting winch arranged on a girder, and a rope body supported by a hook from the child trolley and wound on the hoisting winch. The hooking of the rope from the support sheave of the hook to the hoisting winch is carried at one end to the center of the parent trolley through the one end side sheave with the parent trolley provided at one end of the parent trolley from the one end side hoisting sheave. One end side with girder, which is wound around the center sheave with the parent trolley provided, and is further provided at one end of the girder While being wound on the hoisting winch via a sheave, the other end has a central part of the parent trolley via the other end side sheave with the parent trolley provided on the other end of the parent trolley from the other end side hoisting sheave. It is wound around the center sheave on the other end with a parent trolley provided in, and is further configured to be wound around the winch through the side sheave on the other end with a girder provided on the other end of the girder. And overhead crane equipment.