JPS6357492A - Operation driving device for electric hoisting device - Google Patents

Abstract

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

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a driving operation device for operating a hoisting switch and a hoisting switch of an electric hoisting device such as an electric chain hoist or an electric hoist. be.

[Prior art]

Conventionally, as an operating device for an electric hoisting device,
As announced in Publication No. 815070, the middle part of the inner cover is pivoted to the opening of the box housing the mechanical/electrical conversion control device such as a potentiometer by a pivot fixed to the inner cover. , an arcuate gear fixed to the pivot shaft is engaged with a pinion fixed to the operating shaft of the mechanical/electrical conversion control device, and the inner cover is connected to both ends of the inner cover, the middle part of the box body, and a spring for maintaining a fully neutral position. The inner cover is connected so that one end or the other end of the inner cover is pressed so that the inner cover rotates the operating shaft of the mechanical/electrical conversion control device via the two circular arc gears and pinions. Driving operation devices are known.

[M points while the invention is trying to solve]

However, in the case of the above-mentioned conventional operation control device, it is difficult to perform all operation operations with one hand because it is necessary to press one side of the inner cover or the measuring section while holding the box in hand. There's a problem.

[Purpose and structure of the invention]

The object of the present invention is to provide an operating device for an electric hoisting device that can advantageously solve the above-mentioned problem. A load hanging device 5 is connected to the hanging end portion of the strip 2 for lifting and lowering suspended loads via a control device deck 3 and a holding tube 4 extending in the vertical direction, and a neutral position holding spring is attached to the holding tube 4. Grip 7 held in neutral position by 6
A hoisting switch LS-U is fitted in the control device box 6 so as to be able to rise and fall freely, and a hoisting switch LS-U is operated via an interlocking mechanism and a hoisting striker 8 by the upward movement of the grip 7.
The lowering switch LS- is operated via the interlocking mechanism and the lowering striker 9 by the downward movement of the grip 7.
There is provided an operating device for an electric hoisting device, characterized in that D is provided.

〔Example〕

Next, this invention will be explained in detail using an example shown in 1o.

1 to 10 show an embodiment of the present invention, in which the wheels 13 of a trolley 12 equipped with a traveling drive device 11 consisting of an electric motor with a declination device are mounted on the lower part of a traveling rail 14. An electric hoisting device main body 1, which is placed on a 7-wheel drive and consists of an electric chain block main body, is connected to the lower part of a frame 15 of a trolley 12, and the electric hoisting device main body 1 is
The upper end of the control device box O is connected with a bolt 16 to the hanging end of the load lifting strip 2 consisting of a load chain hanging from the load sheave of the control device box O, and the lower end of the control device box A flange 17 at the upper end of the holding tube 4 is fixed by a bolt 18, and a cylindrical grip 7 having anti-slip irregularities on the outer periphery is slidably fitted in the middle part of the holding tube 4. Slits 19 extending in the vertical direction are provided on both sides of the middle part in the diametrical direction, and each slit 19 is connected to the operating rod 20 arranged in the holding cylinder 4.
A bottle 21 extending in the diametrical direction is inserted between the grip 7 and the grip 7, and both ends of the bottle 210 are locked to the grip 7.

On both upper and lower sides of the bottle 21, the operating rod 20 has an outer [Ii]
A pressing ring 22 with a flange is fitted, and a supporting protrusion 2 is provided inside the central portion of the holding cylinder 4 in the height direction.
3, and a snap ring 25 for supporting the spring bearing ring 24 is fitted into an annular groove provided at the upper and lower parts of the holding cylinder 4, and a snap ring 25 for supporting the spring bearing ring 24 is fitted between each pressing ring 22 and each spring bearing ring 24. , a neutral position holding spring 6 made of a helical spring is interposed in a compressed state, and when each pressing ring 22 is pressed by the neutral position holding spring 6 and pressed against the supporting protrusion 23, each pressing The grip 7 and the operating rod 20 are held in a neutral position by the ring 22 via the bottle 21.

A pair of semicircular sleeves 27 having locking flanges on the outside of the upper end are fitted into a small-diameter shaft portion 26 provided at the upper part of the load hanging device 5 consisting of a hook, and a rotation prevention groove extending in the vertical direction is formed. 283 and a pair of semicircular sleeves 2 marked if
7 is fitted, the support cylinder 29 is screwed into a female screw provided at the lower end of the holding cylinder 4, and the set screw 30 for rotation stopper screwed into the lower end of the holding cylinder 4 is connected to the A stopper 31 is inserted into the anti-rotation groove 28 and between the upper end surface of the load hanging tool 5 and the snap ring 25 to prevent the load hanging tool 5 from floating up.

The support frame 32 is installed inside the control device box 3 with screws 6.
A drive shaft 34 fixed by a support frame 62 and extending laterally is rotatably supported by a support frame 62, and
A drive plate spring 66 made of a thin metal strip spring is wound around a circular drive member 65 that is fitted and fixed to the drive plate 4.
One end of the driving leaf spring 36 is fixed to the driving member 65, and the other end of the driving leaf spring 66 is fixed to the operating rod 20.
It is fixed to the upper end of the frame with screws 37.

A leaf spring wrapping ring 3 fitted and fixed to the drive shaft 64
A winding leaf spring 39 is wound around the winding leaf spring 8, and the winding inner end of the winding leaf spring 69 is fixed to the leaf spring winding ring 38.
The other end of the winding leaf spring 39 is fixed to the support frame 62 with a screw 40, and the elasticity of the winding leaf spring 39 allows the leaf spring winding ring 68 and the drive shaft 34 to be A rotational force in a direction to wind up the drive leaf spring 36 is applied to the drive member 65 through the drive member 65 .

A drive gear 41 is rotatably fitted to the drive shaft roller 4 between the drive member 35 and the leaf spring wrapping ring 68, and a drive pin 42 fixed to the drive member 65 is connected to the drive gear 41. A delay rotation gap is provided between the drive bin 42 and both side edges of the pin rotation direction of the pin accommodation hole 46, and the supporting frame 32 An electric lifting speed controller 10 consisting of a potentiometer or a variable resistor is fixed to the holder, and a driven gear 45 fixed to an operating shaft 44 of the lifting speed controller 10 is meshed with the drive gear 41.

A hoisting switch LS-U and a hoisting switch LS-D are fixed to the support frame 32 with screws, and a hoisting switch for operating the switch lever 46 of the hoisting switch LS-U is attached to the drive shaft 3A. The striker 8 and the lowering striker 9 that operates the switch lever 47 of the lowering switch LS-D are fixed, and the lowering striker 9 operates the lowering switch LS-D.
S-U.

The lowering switch LS-D and the lifting speed controller 10 are connected to the power supply control section of the electric hoisting device via a cable 48.

An operating rod 20 that is moved up and down via the bottle 21 by the grip 7, and a drive plate spring 36 that is moved by the operating rod 20.
and a drive shaft 34 that is rotated via a drive member 35, forming an interlocking mechanism for operating a striker. Further, there is an operating rod 20 that is moved up and down via the bin 21 by the grip 7, and a driving plate 3 that is operated by the operating rod 20.
6. Drive member 35. Drive bottle 42 and drive gear 4
1 and a driven gear 45 that is rotated through the drive gear 1 and the driven gear 45 constitute an interlocking mechanism for operating the elevation speed controller.

In the operating device for the electric hoisting device of the above embodiment, when the grip 7 is held with one hand and moved upward against the elasticity of the upper neutral position holding spring A,
The grip 7 moves the operating rod 20 upwardly via the bottle 21, and the operating rod 20 causes the drive plate spring 3 to move upwardly.
The drive member 35 is rotated in one direction via 6, and
The hoisting striker 81, the hoisting striker 9, and the plate spring winding ring 38 are also rotated in one direction by the drive member 65 via the drive shaft 34, and first, the hoisting striker 8 causes the hoisting switch LS-U switch lever 4
6 is operated, and hoisting operation of the electric hoisting device is started by a signal from the hoisting switch LS-U.

When the grip 7 is further moved upward, the driving pin 42 of the driving member 55 engages with the driving gear 41, and the driving member 35 drives the driving gear 4 through the driving pin 42.
1 is rotated, and the operating shaft 44 of the vertical speed controller 10 is rotated in one direction from the neutral position by the drive gear 41 via the driven gear 45. The hoisting speed is increased by the signal.

When the push-up blade of the grip 7 is loosened, the push ring 22 and the bottle 2 are moved by the force of the upper neutral position holding spring 6.
1, the grip 7 and the operating rod 20 are moved downward, and the hoisting striker 8, the lowering striker 9, and the operating shaft 44 are rotated in the other direction, so that the hoisting speed is reduced. Then, the operation of the switch lever 46 of the hoisting switch LS-U by the hoisting striker 8 is released, and the hoisting operation of the electric hoisting device is stopped.

Furthermore, when the grip 7 is held with one hand and moved downward against the elasticity of the lower neutral position holding spring 6, the grip 7 moves the operating rod 2 through the bottle 21.
0 is moved downward, and the operating rod 20 rotates the drive member 65 in the other direction via the drive plate spring 36, and the drive member 65 rotates the winding striker 81 through the drive shaft 64. The lower striker 9 and the plate spring winding ring 68 are also rotated in the other direction, and first the lower striker 9 operates the switch lever 47 of the lower switch LS-D, and the lower lower switch LS-D is operated. -D signal starts the lowering operation of the electric hoisting device.

When the grip 7 is further moved downward, the driving pin 42 of the driving member 35 engages with the driving gear 41, and the driving member 35 drives the driving gear 4 through the driving pin 42.
1 is rotated, and the operating shaft 44 of the vertical speed controller 10 is rotated in the other direction from the neutral position by the driving gear 41 via the driven gear 45. The lowering speed is increased by the signal.

When the push-down blade of the grip 7 is loosened, the push-up ring 22 and pin 2 are
1f: The grip 7 and the operating rod 20 are moved upward through the hoisting striker 8 and the hoisting striker 9.
As the operation shaft 44 is rotated in one direction, the lowering speed is reduced, and then the operation of the switch lever 47 of the lowering switch LS-D by the lowering striker 9 is released, and the The lowering operation of the hoisting device is stopped.

Therefore, in the case of the above embodiment, the hoisting switch LS-U or the hoisting switch LS-D can be operated by simply holding the grip 7 with one hand and moving it upward or downward. and operation of the lifting speed controller 10 that adjusts the hoisting speed and the hoisting speed.

FIGS. 11 to 13 show other examples of the structure for attaching the load hanger to the holding cylinder, in which a lock 7 is attached to the outer periphery of the upper end.
Chain link fitting recesses 50 are provided on the side surfaces of the pair of semicircular support members 49 each having a lunge, and the chain link fitting recesses 50 of each semicircular support member 49 are
A support pin 52 is fitted into the upper part of the upper end chain link of the suspension chain 51, and a support pin 52 is fitted across each semicircular support member 49 and the upper end chain link, and a locking groove 28 and a male thread extend in the vertical direction. The pair of semicircular support members 4 are disposed inside the support cylinder 29 which is provided with a
9 is fitted, and furthermore, the support cylinder 29 is screwed into a female thread provided at the lower end inside the holding cylinder 4.

In addition, a set screw 6 for preventing rotation is screwed into the lower end of the holding cylinder 4.
0 is fitted into the anti-rotation groove 28, and the upper part of the load hanging tool 5 is 2, which is a hook having a head at the upper end.
It is rotatably fitted into the lower part of the two-split connecting fitting 53, and furthermore, the lower end chain link of the hanging chain 51 is fitted between the two-split connecting fitting 53, and the two-split connecting fitting 56 is connected by a bolt 54 inserted between this and the chain link.

When carrying out this invention, the interlocking mechanism for operating the striker and the interlocking mechanism for operating the elevation speed controller may be of any structure other than that shown in the drawings, for example, the lower part of a rack extending in the vertical direction is connected to the upper part of the operating rod 20. However, an interlocking mechanism having a structure in which a drive member made of a pinion that engages with the rack is fixed to the drive shaft 34 may be adopted.

The temporary spring winding ring 38 and the winding plate spring j9 may be omitted, and any hanging metal fittings may be used as the load hanging tool 5 instead of the hooks. Furthermore,
The present invention can also be implemented in an operating device for an electric hoist having a wire rope lifting drum.

〔Effect of the invention〕

According to this invention, when the grip 7 is moved upward from the neutral position, the hoisting switch LS-U is operated via the interlocking mechanism and the hoisting striker 8, and the electric hoisting device starts hoisting. is started, and when the grip 7 is moved downward from the neutral position, the lowering switch LS-D is operated via the interlocking mechanism and the lowering striker 9, and the lowering operation of the electric hoisting device is started. Therefore, it is possible to perform a simple operation of simply grasping the grip 7 with one hand and moving it upward or downward, and by relaxing the pressing force to move the grip 7 in the vertical direction, it can be moved to the neutral position. The grip 7 can be fully automatically moved to the neutral position by the force of the holding spring 6, and the hoisting switch LS-U and lowering striker 9, which are operated via the hoisting striker 8, can be moved to the neutral position automatically. The lowering switch LS-D, which is operated through the
Since the holding tube 4 and the grip 7 are housed in the control device box 5 provided at the top of the control device box 5, effects such as the ability to make the grip 7 easier to grip by making the holding tube 4 and the grip 7 thinner can be obtained.

[Brief explanation of the drawing]

Figures 1 to 10 show one embodiment of the present invention, in which Figure 1 is a partially longitudinal side view showing an operating device for an electric hoisting device, and Figure 2 is the bottom of Figure 1. FIG. 3 is a vertical side view showing the upper part of the electric hoist operating device, and FIG. 4 is an A-A in FIG. 2.
An enlarged line sectional view, Figure 5 is a sectional view taken along the line B-B in Figure 2, and Figure 6
The figure is a sectional view taken along line C-C of FIG. 2, FIG. 7 is a front view showing the relationship between the striker and the switch, FIG. 8 is a sectional view taken along line D of FIG. 6, and FIG. 9 is a sectional view taken along line D of FIG. Fig. 1C is a side view of an electric hoisting device having the operation device of the present invention. Figures 11 to 16 show other examples of the attachment structure of the load hanging bracket to the holding cylinder, in which Figure 11 is a vertical side view, and Figure 12 is a cross section taken along line F-B in Figure 11. 16 is a sectional view taken along the line G-C in FIG. 11. In the figure, 1 is the main body of the electric hoisting device, 2 is a strip for lifting and lowering a suspended load, 3 is a control device box, 4 is a holding cylinder, 5 is a load hanging device, 6 is a spring for holding a neutral position, 7 is a grip, 8 is a hoisting striker, 9 is a hoisting striker, 10 is a lifting speed controller, 19 is a slit, 20 is an operating rod, 21 is a bottle,
22 is a pressure ring, 23 is a supporting projection, 24 is a spring bearing ring, 25 is a snap ring, 26 is a small diameter shaft, 27
28 is a semi-circular sleeve, 28 is a groove for preventing rotation, 29 is a support tube, 30 is a set screw for preventing rotation, 64 is a drive shaft, 65 is a driving member, 66 is a leaf spring for driving, 68 is for winding a leaf spring Ring, 69 is a winding plate gear, 41 is a driving gear, 42 is a driving bottle, 43 is a bottle receiving hole, 44 is an operating shaft, 45 is a driven gear, LS-U is a winding switch, LS-D is the lowering switch. Figure 5 Figure 6 M4゜X Figure 12 Figure 13 Procedural amendment (voluntary) June 23, 1986

Claims (1)

[Claims] A strip 2 for lifting and lowering a suspended load hanging from the electric hoisting device main body 1
A load hanger 5 is connected to the hanging end of the control device box 3 and a vertically extending holding tube 4, and a grip is held in a neutral position by a neutral position holding spring 6 on the holding tube 4. A hoisting switch LS-U is fitted in the control device box 3 so that it can be raised and lowered freely, and a hoisting switch LS-U that is operated via an interlocking mechanism and a hoisting striker 8 by the upward movement of the grip 7; An operating device for an electric hoisting device, characterized in that it is provided with a lowering switch LS-D that is operated via an interlocking mechanism and a lowering striker 9 during downward movement.