JPH0710459A - Hoist device - Google Patents

Abstract

PURPOSE:To restrain a work hanger from swinging and twisting as possible as it can during a work, in a hoist device by which the work hanger is moved up and down in the lower range of an upper frame in association with the operation of a hoist drive motor and a wind-up reel provided on the upper frame. CONSTITUTION:Between a work hanger 3 and an upper frame 2 supporting the work hanger 3, a plurality of pantograph mechanisms 10, 30, 40 are arranged, being opposed to one another at the front and rear parts and left and right parts of the work hanger 3 and the upper frame 2, and the opposite those of the mechanisms are coupled together through the intermediary of stays 50, 60 as coupling members.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hoist device, and more specifically, it moves a work hanger up and down in a lower region of an upper frame based on operations of a hoist drive motor and a take-up reel provided on the upper frame. And a hoist device configured as described above.

[0002]

2. Description of the Related Art Hoist devices are widely used in various production facilities in processes that require raising and lowering work. The hoist device generally includes an upper frame having a hoist drive motor and a take-up reel,
A work hanger suspended via a chain or rope wound around the take-up reel, and by raising and lowering the work hanger based on the operations of the hoist drive motor and the take-up reel, The work supported by the work hanger is being raised and lowered.

[0003]

By the way, since the work hanger is suspended from the upper frame via a chain or rope, the work hanger may be damaged by an impact or a weight imbalance when the work is set. Shaking or twisting (rotation) with respect to the frame is likely to occur. Especially, in the case of a hoist device linked to a traveling device such as a hoist type overhead crane, the work hanger described above is started or stopped at the time of traveling or during inching. There was the inconvenience that it shook or rotated greatly. In view of the above situation, the present invention is
An object of the present invention is to provide a hoist device capable of preventing the work hanger from unintentionally shaking or twisting during work.

[0004]

In the hoist apparatus according to the present invention, between the work hanger and the upper frame supporting the work hanger, front and rear portions of the work hanger and the upper frame, and a left portion. The above object is achieved by providing a plurality of pantograph mechanisms in such a manner that they face each other on the right side and the right side, and integrally connecting the pantograph mechanisms that are provided so as to face each other through a connecting member. .

[0005]

According to the above construction, the pantograph mechanism provided at the front and rear portions prevents the work hanger from swaying to the left and right with respect to the upper frame, and the pantograph mechanism provided at the left and right portions serves as the upper portion. By preventing the work hanger from swinging back and forth with respect to the frame, and further by integrally connecting the pantograph mechanisms with the connecting member, twisting of the work hanger with respect to the upper frame can be suppressed.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the drawings showing one embodiment. 1 to 4 show an example in which the hoist device according to the present invention is applied to an electric traveling hoist used in a process of transporting a packaging case to a rack in an outboard motor production facility.

The hoist device 1 has an upper frame 2 and a work hanger 3, and the upper frame 2
Is provided with a hoist unit 4 including a hoist drive motor and a take-up reel.

The upper frame 2 is supported by left and right traveling rails 5B via left and right traveling means 5A, and the left and right traveling rails 5B are mounted on front and rear traveling rails 5C fixed to a ceiling (not shown). The upper frame 2 is supported by the front-rear traveling means 5D, so that the upper frame 2 can freely travel in the front-rear and left-right biaxial directions.

On the other hand, the work hanger 3 includes a guide rail 3A extending horizontally and a pair of hangers 3B, 3B movably provided along the guide rail 3A.
And is supported by the upper unit 2 via a lifting frame 6 suspended from a hoist chain 4A hanging from the hoist unit 4 and a rotating unit 7. The work hanger 3 can be rotated in the range of 90 ° with respect to the elevating frame 6 by the function of the rotating unit 7.

The pantograph mechanisms 10, 20, 30, and 40 are provided between the upper frame 2 and the elevating frame 6 which supports the work hanger 3 via the rotary shaft 7.
Is installed.

A pantograph mechanism 10 and a pantograph mechanism 20 are provided at front and rear portions of the upper frame 2 and the elevating frame 6 so as to face each other, while the upper frame 2 and the elevating frame 6 are provided. A pantograph mechanism 30 and a pantograph mechanism 40 are provided on the left and right sides in a manner facing each other.

The front pantograph mechanism 10 is supported by an upper guide frame 11 fixed to the upper frame 2, a lower guide frame 12 fixed to the elevating frame 6, and both guide frames 11 and 12. It is composed of an arm assembly 13.

The arm 13a of the arm assembly 13
The ends of the arm 13b and the arm 13b are pin-coupled to the upper guide frame 11 and the lower guide frame 12, respectively, while the ends of the arms 13c and 13d are respectively connected to the upper guide frame 11 and the lower guide frame 12 via rollers. The arm assembly 13 is movably supported with respect to the lifting frame 6
As it moves up and down, it is deformed as shown by the chain line and the solid line in FIG.

The rear pantograph mechanism 20 is
The front pantograph mechanism 10 is configured to be a mirror surface, and includes an upper guide frame 21, a lower guide frame 22, and an arm assembly 23.
The mode of operation is no different from that of the pantograph mechanism 10 in the front part.

Arms 13b and 13c of the arm assembly 13 in the front pantograph mechanism 10
Two stays (coupling members) 50 are fixed to each of them. Further, each of the stays 50, 50 ... Includes the arm assembly 2 in the rear pantograph mechanism 20.
3, more specifically, it is fixed to each arm of the arm assembly 23 that faces the arms 13b and 13c of the arm assembly 13. That is, the front pantograph mechanism 10 and the rear pantograph mechanism 20, which are provided so as to face each other, include the stays 50, 50 ...
Are integrally connected to each other via.

On the other hand, the pantograph mechanism 30 on the left side is
An upper guide frame 31 fixed to the upper frame 2 via the upper guide frames 11 and 21 of the pantograph mechanisms 10 and 20, and the pantograph mechanism 1
Lower guide frame 32 fixed to the elevating frame 6 via the lower guide frames 12 and 22 of 0 and 20.
And an arm assembly 33 supported by these guide frames 31, 32.

The arm 33a of the arm assembly 33 described above.
The ends of the arms 33b are pin-coupled to the upper guide frame 31 and the lower guide frame 32, respectively, while the ends of the arms 33c and 33d are respectively connected to the upper guide frame 31 and the lower guide frame 32 via rollers. Is movably supported with respect to the arm assembly 33.
As it moves up and down, it will be deformed as shown by a chain line and a solid line in FIG.

The pantograph mechanism 40 on the right side is
The left side pantograph mechanism 30 is configured to be a mirror surface, and includes an upper guide frame 41, a lower guide frame 42, and an arm assembly 43.
The operation mode is also the same as that of the left pantograph mechanism 30.

In the left pantograph mechanism 30, the arm coupling portions 33e and 33 of the arm assembly 33 are provided.
A stay (connecting member) 60 is attached to each of f and. In addition, each of the stays 60, 60 includes an arm assembly 43 in the pantograph mechanism 40 on the right side.
More specifically, the arm assembly 43 is fixed to each arm coupling portion facing the arm coupling portions 33e and 33f of the arm assembly 33. That is, the left-side pantograph mechanism 30 and the right-side pantograph mechanism 40, which are provided to face each other, respectively include the stays 60,
They are integrally connected to each other via 60.

The electric traveling type hoist adopting the hoist device 1 having the above-mentioned structure holds the packing case 100 as a work carried in through the packing line (conveyor) by the work hanger 3 in the hoist device 1,
The packing case 100 is lifted from the packing line by moving the work hanger 3 upward based on the operation of the hoist unit 4 provided on the upper frame 2.

Next, the work hanger 3 is horizontally moved through the upper frame 2 by the operation of the left and right traveling means 5A and the front and rear traveling means 5D, and the work hanger 3 is moved.
After the packaging case 100 gripped by is conveyed to the rack storage section, the work hanger 3 is lowered, and then the packaging case 100 is released from the work hanger 3.

In the hoist device 1, the pantograph mechanisms 10, 20, 30, 40 provided between the upper frame 2 and the work hanger 3 can freely extend and contract in the vertical direction. By raising and lowering the work hanger 3, the packing case 100 can be raised and lowered without any trouble.

On the other hand, in the hoist device 1, the work hanger 3 in the horizontally moving state is acted by an external force for swinging the work hanger 3 back and forth and left and right on the basis of inertial force, but Pantograph mechanism 10
And the rear pantograph mechanism 20 prevent the work hanger 3 from swinging in the left-right direction with respect to the upper frame 2, and the left pantograph mechanism 30 and the right pantograph mechanism 40 prevent the work hanger 3 from moving relative to the upper frame 2. The swing of the work hanger 3 in the front-rear direction can be suppressed.

In other words, by providing the pantograph mechanisms 10 and 20 and the pantograph mechanisms 30 and 40 on the front part and the rear part, and on the left part and the right part of the upper frame 2 and the work hanger 3, respectively, the hoist is provided. The apparent rigidity of the entire apparatus 1 becomes large, which allows the work hanger 3 to be attached to the upper frame 2.
The occurrence of unintentional shaking will be prevented as much as possible.

Further, the work hanger 3 in the horizontally moving state has an external force for swinging the work hanger 3 back and forth and left and right, and the work hanger 3 in the horizontal plane.
The external force in the twisting direction that tries to rotate
In addition to providing the pantograph mechanisms 10, 20, 30 and 40 between the upper frame 2 and the work hanger 3, the opposing pantograph mechanisms 10 and 20 and the pantograph mechanisms 30 and 40 are respectively connected to the stays 50 and Since they are integrally connected to each other via 60, the rigidity of the entire hoist device 1 in the twisting direction is large, and therefore, the twisting (rotation) of the work hanger 3 relative to the upper frame 2 is prevented. The occurrence will be prevented as much as possible.

The hoist apparatus according to the present invention is not limited to the hoist type overhead crane used in the process of transporting the packaging case to the rack in the production equipment of the outboard motor.
It goes without saying that the present invention can be effectively applied to a hoist device that works in a fixed position without being linked to a traveling device.

[0027]

As described above in detail, in the hoist apparatus according to the present invention, the front portion and the rear portion, and the left portion and the right portion of the upper frame and the work hanger are provided between the upper frame and the work hanger. Since a plurality of pantograph mechanisms are provided in such a manner that they face each other on one side, and the pantograph mechanisms that are provided on the other side are integrally connected to each other via a connecting member, the front and rear portions of the work hanger are The pantograph mechanism on the left and right sides prevents the work hanger from swinging to the left and right, and the pantograph mechanism on the left and right sides prevents the work hanger from swinging forward and backward relative to the upper frame. Also, since the pantograph mechanisms are integrally connected by the connecting member, the work hanger for the upper frame is formed. Twisted so that the can be suppressed.

[Brief description of drawings]

FIG. 1 is a front view showing a hoist device according to the present invention.

FIG. 2 is a side view showing a hoist device according to the present invention.

FIG. 3 is a conceptual diagram showing an operation mode of pantograph mechanisms provided before and after an upper frame and a work hanger.

FIG. 4 is a conceptual diagram showing an operation mode of pantograph mechanisms provided on the left and right of an upper frame and a work hanger.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Hoist device, 2 ... Upper frame, 3 ... Work hanger, 4 ... Hoist unit (hoist drive motor and take-up reel), 4A ... Hoist chain, 6 ... Lifting frame, 10, 20, 30, 40 ... Pantograph mechanism, 50, 60 ... Stay (connecting member), 100 ... Packing case.

Claims (1)

[Claims] 1. An upper frame having a hoist drive motor and a take-up reel, a work hanger that moves up and down based on the operation of the take-up reel in a lower region of the upper frame, and a front part of the upper frame and the work hanger. Section and rear section, and left and right sections, respectively, a plurality of pantograph mechanisms provided between the upper frame and the work hanger in a manner to face each other, and the pantograph provided to face each other. A hoist device, comprising: a connecting member that connects the mechanisms to each other in a manner that the mechanisms are integrally connected to each other.