JPH10316376A - Driving device and driving method for chain block - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a driving device capable of being simply fitted to a manual chain block device by bending and hooking an operation chain. SOLUTION: When a suspended cargo 27 is to be lowered to remove a chain block driving device 1, the rotary drive section 10 of the chain block driving device 1 is driven by a remote control unit 28, and driving force is applied to an operation chain 20 in the direction to lower the suspended cargo 27. A load chain 21 is unwound, and the suspended cargo 27 is lowered to reach a floor surface. The load of the chain block driving device 1 becomes larger than the load of the load chain 21, the circulation of the operation chain 20 is stopped, and the chain block driving device 1 is lowered along the operation chain 20. If the operation chain 20 is removed from the chain block driving device 1 when the chain block driving device 1 reaches the vicinity of the floor surface, this chain block driving device 1 can be used for the operation of another chain block device.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chain block driving device for driving a chain block device and a driving method of the chain block device using the same.

[0002]

2. Description of the Related Art Conventionally, a chain block device is often used at a work site such as a factory to lift heavy objects. This chain block device usually has a load chain wound around the device main body, and lifts and lowers a heavy object by moving the load chain up and down. There are a manual method and a drive method for driving the load chain. The manual type is provided with an operation chain wound around the device body separately from the load chain, and the operation chain is circulated to lift and lower the load chain. Each time the rated load increases, the operation chain is stepped via a pulley or the like so that the force required for the manual operation does not greatly change. In the case of a drive system, a rotary drive device such as an electric motor or an air motor is usually built in the device body,
The driving force raises and lowers the load chain.

[0003]

The drive type chain block device has an advantage that it is easy to operate and is efficient, but since the rotary drive device is built in the device body,
There is a problem that the weight and the outer diameter of the device are increased and the price is high. Generally, in a factory or the like, a chain block device is often installed for each work place, and in such a case, these problems become extremely large. Therefore, an object of the present invention is to provide a driving device that can be easily attached to a manual type chain block device and a driving method using the same, in order to solve such a problem.

[0004]

According to a first aspect of the present invention, there is provided a chain block driving device for driving a chain block device having a load chain and an operation chain. The chain block driving device includes a main body having a contact portion of the chain block device with a casing, a rotation driving portion provided on the main body, and a chain driving device rotated by the rotation driving portion. The drive device is characterized in that the operation chain can be bent and engaged. The chain block driving device can be easily attached to the chain block device simply by bending and operating the operation chain on the chain driving device. By driving the rotation drive unit, the load chain of the chain block device can be driven to raise and lower the suspended load. Therefore, a lightweight, compact and inexpensive manual type chain block device can be used in the same manner as the drive type.

A second aspect of the present invention is an embodiment of the first aspect of the present invention, in which a chain driving device includes a driving pulley connected to an output shaft of a rotary driving unit, and the driving pulley. And a pair of guide means arranged so that the axis is deviated from the front and rear of the guide chain, and the operation chain is bent and engaged with the other guide means via the drive pulley from one guide means. It is a feature. The invention described in claim 3 is another embodiment of the invention described in claim 1 or 2, wherein guide means for an operation chain is further provided on a side of the main body opposite to the chain drive device. It is characterized by having. By this guide means, the operation chain can be effectively prevented from being entangled with the chain drive device or the like of the main body.

According to a fourth aspect of the present invention, there is provided a driving method of a chain block device having a load chain and an operation chain. And this method prepares a chain block drive device according to any one of claims 1 to 3,
The operation chain is bent and engaged with the chain drive device, and the rotation drive unit of the chain drive device is driven to operate the operation chain 20 to drive the load chain. According to this driving method, a lightweight, compact, and inexpensive manual type chain block device can be operated in the same manner as the driving method.

[0007]

Next, an embodiment of the present invention will be described with reference to the drawings. 1 to 3 are a front view, a plan view, and a side view showing an example of a chain block driving device according to the present invention. In these figures, a chain block driving device 1 includes a main body 2 formed of a frame such as a steel material,
The lower part of the main body 2 has four legs protruding therefrom.
A contact portion 3 for contacting a casing (not shown) of the chain block device is provided at an upper portion of the housing. A cover 4 is attached to the upper part of the main body 2 by bolts or the like, and a rotating shaft 7 of a drive pulley 6 is supported on both the main body 2 and the cover 4. A pair of guide means 8 and 9 arranged are provided, and these are pivotally supported on one side of the upper part of the main body 2. (Note that FIG. 1 omits the cover 4.) These guide means 8 and 9 are composed of idle rollers whose shafts are supported by both the main body 2 and the cover 4 like the drive pulley 6. I have.
Each of the drive pulley 6 and the guide means 8 and 9 is provided with a V-groove at the center or with guide walls on both sides in the width direction so that the operation chain 20 engaged with the drive pulley 6 does not fall off. The drive pulley 6 and the pair of guide means 8 and 9 constitute the chain drive device 5.

A rotary drive unit 10 such as a deceleration motor is provided at a lower portion of the main body 2, and a sprocket 11
The sprocket 11 and the sprocket 12 attached to one end of the rotating shaft 7 of the driving pulley 6 are attached.
Are connected by a chain 13. A pedestal frame 14 is further provided at a lower portion of the main body 2, and guide means 15 and 16 formed of idle rollers are respectively supported on both sides of the pedestal frame 14. Further, another guide means 17 is protrudingly provided on the side of the main body 2 opposite to the guide means 8 and 9. The guide means 17 is provided for the purpose of preventing the operation chain 20 from being entangled with the main body 2 or the like. As shown in FIG. 2, the guide means 17 is constituted by a tubular body which can be opened and closed, and the tubular body is opened to open the operation chain. 20
Can be passed inside.

An operation chain 20 passed through the guide means 17
Is the guide means 16 (and the guide means 1 if necessary)
5) and then from the guide means 9 to the drive pulley 6
Through the guide means 8 through the
At this time, the driving pulley 6 is bent by the guide means 9 and 8 before and after the driving pulley 6. FIG. 4 shows the drive pulley 6 with respect to the cover 4.
FIG. 4 is a partially enlarged view showing a relationship between the guide means and guide means 8 and 9. The cover 4 has a substantially semicircular groove 4a,
The operation chain 20 can be mounted from the side using the groove 4a.

FIGS. 5 and 6 are explanatory diagrams showing a state in which the chain block driving device 1 is used to operate a manual type chain block device. FIG. 5 (a) is a front view and FIG. ) Is a side view. In these figures,
The chain block device 23 having the operation chain 20 and the load chain 21 hooked in the casing 22 includes:
The upper part is hooked on a ceiling hook 25 provided on the ceiling 24 of the building. In order to operate the operation chain 20 of the chain block device 23 using the chain block drive device 1 of the present invention, first, a hanging load 27 is hung on a hanging member 26 provided on the load chain 21. Then, as shown in FIGS. 1 and 3, the operation chain 20 is passed through the guide means 17 of the chain block driving device 1 and further passed through the guide means 15 and 16. Next, operation chain 2
0 is passed from the guide means 9 to the guide means 8 via the drive pulley 6, and is engaged with the chain drive device 5 in a bent form. In order to engage the operation chain 20 with the drive pulley 6, the groove 4a of the guide 4 is used.

Next, a remote controller 2 comprising an operation box
8 to drive the rotation drive unit 10 of the chain block drive device 1 to apply a driving force to the operation chain 20 so that the load chain 21 is driven in the direction in which the suspended load 27 rises. Since no load is applied to the load chain 21 in the initial stage, the operation chain 20 moves around and winds up the load chain 21. At this time, the relationship between the main body 2 and the operation chain 20 is as shown in FIGS. When a load is applied to the load chain 21,
Since the load of the chain block driving device 1 is smaller than the load of the load chain 21 and the operation chain 20 is engaged with the chain driving device 5 so as to bend, the orbital movement of the operation chain 20 is stopped, and FIG. The chain block driving device 1 rises along the operation chain 20 as shown by an arrow as shown in FIG.

When the chain block driving device 1 rises and its contact portion 3 comes into contact with the casing 22 of the chain block device 23 as shown in FIG. 6A, the chain block driving device 1 rises further. Can not do
The operation chain 20 starts the orbital movement as indicated by the arrow.
Then, the load chain 21 is wound up and FIG.
The suspended load 27 rises as shown in FIG. When lowering the suspended load 27 and removing the chain block driving device 1, the operation opposite to the above is performed. That is, the rotary drive unit 10 of the chain block drive device 1 is driven by the remote controller 28 to apply a driving force to the operation chain 20 in a direction in which the suspended load 27 is lowered. Then, first, the load chain 21 is rewound, and the suspended load 27 descends and reaches the floor. As a result, the load on the chain block driving device 1 becomes larger than the load on the load chain 21, so that the operation chain 20 stops rotating and the chain block driving device 1
Descends along the operation chain 20. After the chain block drive 1 has reached near the floor, the operating chain 20
Is removed from the chain block driving device 1, the chain block driving device 1 can be used for operation of another chain block device.

[0013]

The chain block driving apparatus of the present invention and the driving method using the same constructed as described above can be easily attached to the chain block apparatus only by bending and operating the operation chain on the chain driving apparatus. be able to. By driving the rotation drive unit, the operation chain of the chain block device can be operated to drive the load chain. Therefore, by using the chain block driving device of the present invention, a lightweight, compact and inexpensive manual type chain block device can be used similarly to the driving system. Further, even when there are a plurality of manual chain block devices, it is only necessary to prepare one chain block drive device of the present invention.

[Brief description of the drawings]

FIG. 1 is a front view showing an example of a chain block driving device according to the present invention.

FIG. 2 is a plan view of FIG. 1;

FIG. 3 is a side view of FIG. 1;

FIG. 4 is a partially enlarged view showing a relationship between a cover 4, a driving pulley 6, and guide means 8, 9 used in the chain block driving device of the present invention.

FIG. 5 shows the use of the chain block drive of the present invention;
Explanatory drawing which shows the state which is operating the chain block apparatus of a manual system.

FIG. 6 shows the use of the chain block driving device of the present invention;
Explanatory drawing which shows the state which is operating the chain block apparatus of a manual system.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Chain block drive 2 Main body 3 Contact part 4 Cover 4a Groove 5 Chain drive 6 Drive pulley 7 Rotary shaft 8 Guide means 9 Guide means 10 Rotation drive part 11 Gear 12 Gear 13 Chain 14 Pedestal frame 15 Guide means 16 Guide means 17 Guide Means 20 Operation Chain 21 Load Chain 22 Casing 23 Chain Block Device 24 Ceiling 25 Ceiling Hook 26 Hanging Tool 27 Suspended Load 28 Remote Controller

Claims (4)

[Claims] 1. A drive device for driving a chain block device 23 having a load chain 21 and an operation chain 20, comprising: a main body 2 having a contact portion 3 of a chain block device 23 with a casing 22; A rotary drive unit 10 provided; and a chain drive device 5 rotated by the rotary drive unit 10.
A chain block drive device configured to bend and bend. 2. A drive pulley 6 connected to an output shaft of a rotary drive unit 10; and a pair of guide means 8 disposed before and after the drive pulley 6 so as to be offset from the drive shaft. 2. The chain according to claim 1, wherein the operation chain 20 is configured to bend and engage with the other guide means 8 via the drive pulley 6 from one of the guide means 9. Block drive. 3. The chain driving device 5 in the main body 2.
The chain block driving device according to claim 1 or 2, further comprising a guide means (17) for the operation chain (20) on the opposite side of the chain block. 4. A driving method of a chain block device 23 having a load chain 21 and an operation chain 20, wherein the chain block driving device 1 according to claim 1 is prepared, and the chain driving device is provided. 5. A chain block device characterized in that the operation chain 20 is bent and engaged with the chain drive 5 and the rotation drive unit 10 of the chain drive device 5 is driven to operate the operation chain 20 and drive the load chain 21. Drive method.