JPS63202594A - Two-step speed operation driving device for electric winder - Google Patents

Abstract

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

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides a method for hoisting and lowering an electric hoisting device such as an electric chain lock or an electric hoist on a two-tier floor at low speed and high speed. This invention relates to a two-speed driving operation device that can be operated at two speeds.

[Prior art]

Conventionally, as an operating device for an electric hoisting device, the
As announced by Publication No. 1-132569,
A load hanging device is connected to the hanging end of the load lifting strip hanging from the electric hoisting device body via the switch box body, and a grip protruding laterally from the switch box body. 2. Description of the Related Art There is known an operating device having a structure in which a push button for a hoisting switch and a push button for a hoisting switch are provided.

[Problem that the invention seeks to solve]

However, in the case of the conventional operation control device for an electric hoisting device, the switch push button is provided on a grip that protrudes laterally from the switch box body, so the push button is operated by grasping the grip. When the load hanger is tilted, a vertical force is applied to the grip, which may cause the switch box body and the load hanger to tilt. It becomes difficult. In addition, in the case of the conventional operating device, the hoisting speed and the lowering speed cannot be changed, so at the start and end of lifting and lowering, the hoisting and hoisting and lowering speeds are set to low speeds in order to reduce the shock. In order to improve the efficiency of lifting and lowering, it is not possible to perform a speed switching operation in which the hoisting and lowering speeds of the two hoists during lifting and lowering are increased.

[Purpose and structure of the invention]

An object of the present invention is to provide a two-speed operation operating device for an electric hoisting device that can advantageously solve the above-mentioned problems. A load hanging tool 5 is connected to the hanging end of the strip 2 for lifting and lowering a suspended load, via a support member 4 provided with a vertical holding cylinder 5, and on the outer periphery of the holding cylinder 5, A grip 7, which is held at a neutral position in the vertical direction by a neutral position holding spring 6, is fitted into the holding cylinder 5 so as to be able to move up and down.
A hoisting switch SU operated by the upward movement of a striker 8 fixed to the grip 7 and a hoisting switch SD operated by the downward movement of the striker 8 are attached to the grip 7. This is a two-speed operation operating device for an electric hoisting device, characterized in that a switch S is attached.

〔Example〕

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

1 to 5 show a first embodiment of the present invention, in which an upper hanging hook 9 is connected to the upper part of an electric hoisting device main body 1 consisting of an electric chain block main body, and the The upper part of the cable support member 10 is connected by a bolt 11 to the hanging end of the suspended load lifting strip 2, which is made up of a load chain y, hanging from the electric hoisting device main body 10. The upper end of the holding cylinder 5 is screwed into a male threaded shaft 12 provided at the center of the lower part, and the holding cylinder 5 and the cable support member 10 constitute a support member 4.

A load hanging device 5 consisting of a hook is provided at the lower end of the holding tube 5.
are screwed together, and a rubber cylindrical grip 7 equipped with a large number of anti-slip annular protrusions provided at intervals in the vertical direction is fitted on the outer surface of the holding cylinder 5 so as to be able to rise and fall freely. ,
Further, a spring holding shaft 13 is fitted into the lower part of the holding cylinder 6 and fixed with a screw 14, and both arms of the neutral position holding spring 6, whose middle part is fitted into the spring holding shaft 15, are attached to the grip 7. A pair of vertically extending slits 16 are provided in the holding cylinder 5, which are engaged with the upper and lower parts of a spring receiving protrusion 15 integrally provided on the inner surface, and which allow vertical movement of each arm of the spring 6, respectively. The grip 7 is held by the spring A.
is held in a neutral position in the vertical direction.

A striker 8 is attached to the top of the inner surface of the grip 7 with a screw 17.
A guide slit 18 extending vertically is provided in the middle part of the holding cylinder 5, and a striker 8 is slidably inserted into the slit 18, and can be operated by upward movement of the striker 8. The hoisting switch SU, which is operated by the downward movement of the striker 8, and the hoisting switch SD, which is operated by the downward movement of the striker 8, are fixed with screws to a switch holding member 19 within the holding cylinder 5, and the switch holding member 19 is fixed to the holding cylinder. It is fixed to the filter with screws 20.

A slit 21 extending in the vertical direction is provided in the upper part of the holding cylinder 5, and a high/low speed changeover switch S, which is a push button switch, is inserted into the slit 21 so as to be able to move up and down. The high/low speed changeover switch S, the hoisting switch SU, and the hoisting/lowering switch SD are connected to a flexible spiral cable 22.
The cable 22 is connected to the power supply control section of the electric hoisting device via the cable 22, and the suspended load lifting strip 2 is inserted through the spiral portion of the cable 22.

When a DC motor is used as the motor in the electric hoisting device main body 1, the hoisting and hoisting speeds can be changed by pressing the high/low speed changeover switch S to change the resistance value of the power supply and convert the power supply voltage. Convert. When using AC parent-child motors with different rotational speeds as the electric motors in the electric hoist main body 1, the motors are switched by pressing the high/low speed switching switch S.

When changing the speed of hoisting operation and lowering operation, raise the grip 7 and use the striker 8 to press the hoisting switch SU.
When operating , low-speed hoisting operation is performed, and
7 is lowered and the lowering switch SD is operated by the striker 8, low-speed lowering operation is performed, and when the high-low speed changeover switch S is pressed while performing low-speed hoisting operation or low-speed lowering operation, high-speed operation is performed. It may be configured such that the operation is switched to the hoisting operation or the high-speed lowering operation, and when the finger is released from the high-speed changeover switch S, the operation is switched again to the low-speed hoisting operation or the low-speed lowering operation.

In addition, each time the high-low speed changeover switch S is pressed, the hoisting speed and the lowering speed are changed, and the high-low speed changeover switch S has a high-speed indicator lamp that lights up when switched to high-speed operation. By moving the grip 7 upward or downward, the hoisting switch SU or the hoisting switch SD is operated to perform hoisting or hoisting operation, and when the high-low speed changeover switch S is pressed, the operating speed is changed. It may be possible to do so. If the vehicle is in high-speed operation, this can be confirmed by lighting the high-speed indicator lamp.

In the case of an electric hoisting device equipped with a two-speed operating device configured as described above, during lifting and lowering transportation of empty boxes, lifting and lowering movement of the load hanging device 5 when there is no load, and during lifting and lowering transportation, etc. It can operate at high speeds, and also at the start of lifting the load and at the end of lifting the load.

It is possible to perform low-speed operation when seating the load to be lowered, and when lowering the suspended object to a predetermined position.
If the suspended load is deviated laterally, the load can be easily lowered to a predetermined position by lowering the load at low speed while pressing the grip 7 laterally.

FIG. 6 shows a second embodiment of the present invention, in which a high-low speed changeover switch S consisting of a chive switch or a foot switch is used.
is wrapped around the entire circumference of the upper part of the grip 7 and fixed with an adhesive, but the other configuration is the same as in the first embodiment.

In the case of the second embodiment, the high/low speed changeover switch S can be operated from any direction around the grip 7.

When carrying out this invention, any hanging fitting may be used instead of the hook as the luggage hanging device 5, and the wheels of a trolley equipped with a traveling drive device may be used as the luggage hanging device 5. The trolley hoist body 1 may be placed on the lower flange of the trolley frame, and the upper part of the centrifugal hoist main body 1 may be connected to the lower part of the trolley frame. Furthermore, the present invention can be implemented in a two-speed operating device for an electric hoist having a wire rope lifting drum.

〔Effect of the invention〕

According to this invention, by simply grasping the grip 7 with one hand and moving it upward from the neutral position, the hoisting switch SU is operated by the striker 8 provided on the grip f7, and the electric hoisting device is hoisted. Operation can be started, and by simply grasping the grip 7 with one hand and moving it downward from the neutral position, the lowering switch SD is operated by the striker 8, and the lowering operation of the electric hoisting device is started. Therefore, by simply holding the grip 7 with one hand and moving it upward or downward, the electric hoisting device can be easily hoisted and hoisted. And even if no load is applied to the luggage hanging device 5, the luggage hanging device 5
You can perform hoisting and lowering operations without tilting, and by simply operating the high/low speed changeover switch S', you can perform high-speed hoisting, 1 hoisting, and low-speed hoisting. It is possible to switch to 2-roll down operation, so the lifting speed can be lowered at the start and end of lifting and lowering to reduce shock, and the lifting speed can be increased during lifting and lowering to improve lifting and lowering transport efficiency. In particular, in the case of the present invention, since the high/low speed changeover switch S is attached to the grip 7, the high/low speed changeover switch S can be easily operated while the grip 7 is being raised or lowered. Effects such as being able to do this can be obtained.

[Brief explanation of the drawing]

1 to 5 show a first embodiment of the present invention, in which FIG. 1 is a longitudinal sectional side view showing a two-speed operation operating device for an electric hoisting device, and FIG. 2 is a front view thereof. , Figure 5 is the first
FIG. 4 is an enlarged sectional view taken along line 8-B in FIG. 1, and FIG. 5 is a front view of the electric hoisting device having a two-speed operating device. FIG. 6 is a longitudinal sectional side view showing a two-speed operation operating device for an electric hoisting device according to a second embodiment of the present invention. In the figure, 1 is the electric hoist main body, 2 is a strip for lifting and lowering a suspended load, 5 is a holding cylinder, 4 is a support member, 5 is a load hanging device, 6
1 is a neutral position holding spring, 7 is a grill lug, 8 is a striker, 9 is an upper hook for hanging, 10 is a cable support member, 15
15 is a spring holding shaft, 15 is a spring receiving projection, 18 is a guide slit, 19 is a switch holding member, and 22 is a cable.

Claims (1)

[Claims] A strip 2 for lifting and lowering a suspended load hanging from the electric hoisting device main body 1
A support member 4 having a vertical holding tube 3 at its hanging end.
A load hanger 5 is connected to the holding cylinder 3 via the above-mentioned, and a click 7, which is held at a neutral position in the vertical direction by a neutral position holding spring 6, is fitted to the outer periphery of the holding cylinder 3 so as to be able to rise and fall freely. Inside, a hoisting switch SU is operated by the upward movement of a striker 8 fixed to the grip 7, and a hoisting switch S is operated by the downward movement of the striker 8.
A two-speed operating device for an electric hoisting device, characterized in that a switch D is attached to the grip 7, and a switch S for switching between high and low speeds is attached to the grip 7.