JPH025676B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention relates to an operation operation for operating a hoisting switch, a hoisting switch, and a speed controller of an electric hoisting device such as an electric chain block or an electric hoist. It is related to the device.

[Prior art]

Conventionally, the operating device for electric hoisting equipment is
As disclosed in Japanese Utility Model Application Publication No. 48-35070, the middle part of the inner cover is fixed to the opening of the box housing a mechanical/electrical conversion control device such as a potentiometer. An arcuate gear pivotally mounted on a pivot and fixed to the pivot is engaged with a pinion fixed to the operating shaft of the mechanical/electrical conversion control device, and both ends of the inner cover and the middle part of the box body are placed in a neutral position. They are connected via a retaining spring, and the inner lid pivots by pressing one end or the other end of the inner lid.
2. Description of the Related Art A driving operation device is known in which an operating shaft of a mechanical/electrical conversion control device is rotated via an arcuate gear or a pinion.

[Problem that the invention seeks to solve]

However, in the case of the conventional driving operation device,
Since one side or the other side of the inner cover must be pressed while holding the box in hand, there is a problem in that it is difficult to adjust the hoisting speed and the lowering speed with one hand.

[Purpose and structure of the invention]

The object of the present invention is to provide an operating device for an electric hoisting device which can advantageously solve the above-mentioned problems, and which includes a strip for lifting and lowering a suspended load hanging from the electric hoisting device main body 1. A luggage hanger 4 is connected to the hanging end of the support frame 3 via the support frame 3.
A grip 5 extending laterally at an intermediate portion in the height direction is supported by the support frame 3.
The vertically intermediate portion of the switch operating lever 6, which is disposed close to one end, is fixed to a drive shaft 7 that extends laterally and is rotatably attached to the support frame 3. 3 includes a hoisting switch LS-U operated by a hoisting striker 8 fixed to the drive shaft 7 and a lowering switch LS-U operated by a lowering striker 9 fixed to the drive shaft 7. -D is attached, and a lever neutral position holding spring 10 is engaged with the switch operating lever 6.The first invention provides an operating device for an electric hoisting device, which is characterized in that the switch operating lever 6 is engaged with a lever neutral position holding spring 10. At the hanging end of the hanging load lifting strip 2 hanging from the main body 1,
A load hanger 4 is connected via the support frame 3, and a grip 5 extending laterally at the middle part of the support frame 3 in the height direction is rotatably supported by the support frame 3. The vertically intermediate portion of the switch operation lever 6, which is disposed close to the switch lever 6, is fixed to a drive shaft 7 that extends laterally and is rotatably attached to the support frame 3. A hoisting switch LS-U is operated by a hoisting striker 8 fixed to the drive shaft 7, and a hoisting switch LS-D is operated by a hoisting striker 9 fixed to the drive shaft 7. installed,
A lever neutral position holding spring 10 is engaged with the switch operation lever 6, and the vertical speed controller 11
is disposed at a position facing the other end of the grip 5 and attached to the support frame 3, and a drive member 13 fixed to the other end of the grip 5 is connected to the operation shaft 12 of the lifting speed controller 11. A second invention provides an operating device for an electric hoisting device, characterized in that a driven member 14 to be rotated is fixed, and a driven member neutral position holding spring 15 is engaged with the driven member 14. It is.

〔Example〕

Next, the present invention will be explained in detail using illustrated examples.

The drawing shows one embodiment of the present invention, in which wheels 18 of a trolley 17 equipped with a traveling drive device 16 consisting of an electric motor with a speed reducer are connected to a traveling rail 1.
The electric hoisting device main body 1, which is placed on the lower flange of the trolley 9 and consists of an electric chain block main body,
A pair of support frame constituent units 21 are connected to the lower part of the frame 20 of the electric hoisting device main body 1 at the drooping end portions of the hoisted load lifting strips 2 consisting of a load chain and hanging from the load sheave of the electric hoist main body 1. ,22
The upper center of the support frame 3 consists of a bolt 23 for connecting each unit 21, 22,
4, each support frame constituent unit 21,
At the top of 22, a pin retaining plate 51 is attached to the screw 52.
The upper inverted L-shaped part of the load hanging device 4, which is fixed and further consists of a hook, is connected to the recess 2 provided at the lower part of the pair of support frame constituent units 21 and 22.
5, and the inverted L-shaped portion and each support frame constituent unit 21, 22 are connected by a connecting bolt 26.

Both ends of a horizontal grip 5 extending laterally (left and right) at the middle of the height direction of the support frame 3 are rotatably supported by the support frame 3, and are connected to the end face of one end of the grip 5. A plurality of spacer sleeves 28 are interposed between the supporting plates 27 facing each other at intervals, and the grip 5 is screwed into the fixing screws 29 inserted through the supporting plates 27 and the spacer sleeves 28, and the fixing screws 29 and a spacer sleeve 28 fix the support plate 27 to the grip 5.

A drive shaft 7 extending in the lateral direction (left-right direction) is rotatably fitted to the grip 5 and the support plate 27, and a support shaft 30 extending parallel to the grip 5 and the support plate 27 at the rear of the drive shaft 7 is connected to the grip 5 and the support plate 27. Furthermore, the front switch operation lever 6 and the rear switch operation lever 31 are arranged between one end of the grip 5 and the support plate 27, and the front switch operation lever 6 and the rear switch operation lever 31 are arranged between one end of the grip 5 and the support plate 27. The vertically intermediate portion of 6 is fitted onto the drive shaft 7 and fixed with a fixing screw 32, and the vertically intermediate portion of the rear switch operation lever 31 is fitted with a support shaft 30 and fixed with a fixing screw 33. Fixed.

Semicircular gears 34 and 35 that mesh with each other are integrally provided on one side of the back side of each switch operation lever 6 and 31 at the middle part in the vertical direction. A Z-shaped lever neutral position holding spring 10 is arranged symmetrically, and a support plate 27 on the drive shaft 7 is arranged symmetrically.
A hoisting striker 8 and a hoisting striker 9 are fitted into the protruding portions so as not to rotate relative to each other, and an annular groove provided at the protruding end of the drive shaft 7 is provided with a striker retainer. A snap spring 36 is fitted.

A hoisting switch LS-U having a switch lever 37 operated by the hoisting striker 8
and a lowering switch LS-D having a switch lever 38 operated by the lowering striker 9.
is fixed to the support plate 27 with screws 39, and is connected to each striker 8, 9 and the hoisting switch.
The opening of the cover 40 that covers the LS-U and the lowering switch LS-D is fitted into the support plate 27, and the cover 40 is inserted between the support plate 27 and the support frame 3.
It is fitted into the support plate 27 and supported by the support frame 3 so as not to move.

An electrical lifting speed controller 11 consisting of a potentiometer or a variable resistor is arranged to face the other end of the grip 5, and the center line of the operating shaft 12 in the lifting speed controller 11 and the grip 5
The mounting bracket 42, which is arranged on the same straight line as the center line of the support frame 3 and which fixes the vertical speed controller 11, is
The driven member 14, which is fixed by a screw 43 and further provided with a drive member housing hole 44, is fitted onto the operating shaft 12 and fixed by a screw 45, and is also connected to a pin fixed to the other end of the grip 5. The drive member 13 is disposed within the drive member housing hole 44.

The groove bottom plate of the trapezoidal groove-shaped driven member neutral position holding spring 15 is fixed to the mounting bracket 42 by screws 46, and the driven member neutral position holding spring 1 is fixed to the mounting bracket 42 by screws 46.
The tips of both arms at 5 are engaged with the driven member 14, and when the driven member 14 is held at the neutral position, the driving member 13 and the rotating covers on both sides of the driving member accommodation hole 44 in the driving member rotation direction are engaged with the driven member 14. Pressing part 4
A gap for delayed rotation is provided between 7 and 7. Further, a hoisting display 48 is provided on the upper surface of each switch operating lever 6, 31, and a lowering display 49 is provided on the lower surface of each switch operating lever 6, 31, so that the hoisting switch LS-U , the lowering switch LS-D, and the lifting/lowering speed controller 11 are connected to the power supply control section of the electric hoisting device via a cable 50.

In the operating device for the electric hoisting device of the above embodiment, while holding the grip 5 with one hand, press the upper part of the switch operating lever 6 with the thumb of the other hand, and rotate the switch operating lever 6 together with the drive shaft 7. When it is moved, the hoisting striker 8 and the hoisting striker 9 are rotated by the drive shaft 7, and the hoisting striker 8 operates the switch lever 37 of the hoisting switch LS-U. The hoisting operation of the electric hoisting device is started by a signal from the hoisting switch LS-U.

While pressing the top of the switch operation lever 6,
When the grip 5 is rotated in an arbitrary direction, the driving member 13 engages with the driven member 14, and the operating shaft 12 of the elevation speed controller 11 is rotated by the grip 5 via the driving member 13 and the driven member 14. Therefore, the hoisting speed is increased by the signal from the elevator speed controller 11.

Next, when the rotational force of the grip 5 is loosened, the driven member 1 is moved by the force of the driven member neutral position retaining spring 15.
4 and the operating shaft 12 are rotated toward the neutral position, the hoisting speed is reduced. Next, when the pressing force on the upper part of the switch operation lever 6 is released, the switch operation lever 6 is rotated to the neutral position by the force of the lever neutral position holding spring 10, and the drive shaft 7 is rotated by the switch operation lever 6. The hoisting striker 8 and the hoisting striker 9 are rotated to the neutral position via the hoisting striker 8, and the operation of the switch lever 37 of the hoisting switch LS-U by the hoisting striker 8 is released, so that the electric hoisting device hoisting operation is stopped.

Also, while holding the grip 5 with one hand, press the lower part of the switch operation lever 6 with the thumb of that one hand and rotate the switch operation lever 6 together with the drive shaft 7, and the drive shaft 7 will cause the hoisting striker to move. 8 and the lowering striker 9 can be rotated, and the lowering striker 9 operates the switch lever 38 of the lowering switch LS-D.
A signal from the lowering switch LS-D starts the lowering operation of the electric hoisting device.

When the grip 5 is rotated in any direction with the lower part of the switch operating lever 6 pressed, the driving member 13 engages with the driven member 14, and the grip 5 engages the driven member 14 through the driving member 13 and the driven member 14. As the operation shaft 12 of the elevator speed controller 11 is rotated, the lowering speed is increased by the signal from the elevator speed controller 11.

Next, when the rotational force of the grip 5 is relaxed, the driven member 14 and the operating shaft 12 are rotated toward the neutral position by the force of the driven member neutral position holding spring 15, so that the lowering speed is reduced. It will be done. Next, when the pressing force on the lower part of the switch operation lever 6 is released, the switch operation lever 6 is rotated to the neutral position by the force of the lever neutral position holding spring 10, and the drive shaft 7 is rotated by the switch operation lever 6. The hoisting striker 8 and the hoisting striker 9 are rotated to the neutral position through the hoisting mechanism, and the operation of the switch lever 38 of the hoisting switch LS-D by the hoisting striker 9 is released, so that the electric hoisting device The lowering operation is stopped.

In the case of the above embodiment, since the switch operation levers 6 and 31 that rotate in conjunction with each other are provided on both the front and rear sides of the support frame 3, the winding switch LS-U and the winding switch can be operated from both the front and rear sides of the support frame 3. Lower switch LS
D can be operated.

When carrying out this invention, any hanging metal fittings may be used as the luggage hanging fittings 4 in place of the hooks. Furthermore, the present invention can be implemented in an operating device for an electric hoist having a winding drum for lifting and lowering a wire rope. Further, the switch operating lever 31 at the rear may be omitted.

〔Effect of the invention〕

According to this invention, when the grip 5 is gripped with one hand and the thumb of the other hand presses the upper or lower part of the switch operation lever 6, the switch operation lever 6 causes the winding operation to occur via the drive shaft 7. As the striker 8 and the lowering striker 9 are rotated, the hoisting switch LS-U or the lowering switch LS-D is operated by the hoisting striker 8 or the lowering striker 9, and the hoisting operation is started. Or if lowering operation is performed and grip 5
Since the support frame 3 supporting the load is interposed between the load hanging tool 4 and the load lifting strip 2, it is possible to prevent the grip 5 from swinging by using the weight of the load. Therefore, the hoisting operation with one hand and the lowering operation with one hand can be easily performed in a stable state. Further, the grip 5 is rotatably supported by the support frame 3, and an elevation speed controller 11 is attached to the support frame 3 at a position facing the other end of the grip 5.
A driven member 14 is attached to the operating shaft 12 of the grip 5 and is rotated by a driving member 13 fixed to the other end of the grip 5.
By fixing the driven member 14 and engaging the driven member neutral position holding spring 15, when the grip 5 is rotated with the upper or lower part of the switch operation lever 6 pressed, the drive Part 1
3 and the lifting speed controller 1 via the driven member 14.
The hoisting speed or hoisting speed can be adjusted by rotating the operation shaft 12 of 1. Therefore, while holding the grip 5 with one hand, you can press the upper or lower part of the switch operation lever 6, or press the upper or lower part of the switch operation lever 6. By performing the simple operation of rotating the , it is possible to easily perform the hoisting operation, the hoisting operation, and the adjustment of the hoisting speed and the hoisting speed.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, in which Fig. 1 is a front view of an operating device for an electric hoisting device, Fig. 2 is a partial vertical sectional view thereof, and Fig. 3 is a diagram of an electric hoisting device. 4 is an enlarged sectional view taken along line AA in FIG. 1; FIG. 5 is an enlarged sectional view of the right side of FIG. 4;
6 is an enlarged sectional view taken along the line B--B in FIG. 1, FIG. 7 is an enlarged sectional view taken along the line CC in FIG. 1, FIG. 8 is an enlarged sectional view taken along the line DD in FIG. The figure is a side view of an electric hoisting device having an operation device according to the present invention. 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 support frame, 4 is a load hanging device, 5 is a grip, 6 is a switch operation lever, 7 is a drive shaft, and 8 is a 9 is a hoisting striker, 9 is a hoisting striker, 10 is a lever neutral position holding spring, 11 is a lifting speed controller, 12 is an operating shaft, 13 is a driving member,
14 is a driven member; 15 is a spring for holding the driven member in a neutral position; 21 and 22 are support frame constituent units;
3 is a connecting bolt, 26 is a connecting bolt, 27 is a support plate, 28 is a spacer sleeve, 29 is a fixing screw, 30 is a support shaft, 31 is a switch operating lever, 34 and 35 are semicircular gears, 37 and 3
8 is a switch lever, 44 is a drive member housing hole, 4
7 is a pressed part for rotation, 48 is a winding up display, and 49 is a winding down display.

Claims (1)

[Scope of Claims] 1. A load hanging device 4 is connected via a support frame 3 to the hanging end of the load lifting strip 2 hanging from the electric hoist main body 1. A grip 5 extending in the horizontal direction at the middle part in the height direction is supported by the support frame 3, and the middle part in the vertical direction of the switch operating lever 6 disposed close to one end of the grip 5 extends in the horizontal direction. A hoisting switch is fixed to a drive shaft 7 which is extended and rotatably attached to the support frame 3, and the support frame 3 has a hoisting switch operated by a hoisting striker 8 fixed to the drive shaft 7.
LS-U and a lowering switch LS-D operated by a lowering striker 9 fixed to the drive shaft 7
An operating device for an electric hoisting device, characterized in that the switch operating lever 6 is engaged with a lever neutral position holding spring 10. 2 A load hanging device 4 is connected to the hanging end of the load lifting strip 2 hanging from the electric hoist main body 1 via the support frame 3, and the load hanging device 4 is connected to the vertically intermediate portion of the support frame 3. A grip 5 extending laterally is rotatably supported by the support frame 3, and a vertically intermediate portion of a switch operation lever 6 disposed close to one end of the grip 5 extends laterally. A hoisting switch LS-U is fixed to a drive shaft 7 rotatably attached to the support frame 3, and is operated by a hoisting striker 8 fixed to the drive shaft 7. Lowering switch LS operated by lowering striker 9 fixed to drive shaft 7
- D is attached, and the lever neutral position holding spring 10 is engaged with the switch operating lever 6,
The lifting speed controller 11 is disposed at a position opposite to the other end of the grip 5 and is attached to the support frame 3. An operating device for an electric hoisting device, characterized in that a driven member 14 rotated by a driven member 13 is fixed, and a driven member neutral position holding spring 15 is engaged with the driven member 14.