JPS6360899A - Operating device for two-stage speed electric winder with variable speed setter - 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] [Field of Industrial Application] The present invention relates to an operating device for a two-speed electric hoisting device, which is equipped with a high-speed lifting speed regulator and a low-speed lifting speed regulator in an operation box. be.

[Prior art]

Conventionally, the operation control device for electric hoisting devices such as electric chain hoists has been equipped with a valve button switch for hoisting operation and a valve button switch for hoisting operation in an operation box connected to a cable hanging from the electric hoisting device body. [Problems to be Solved by the Invention] However, in the case of the above-mentioned conventional driving operation device, the load When hoisting or lowering at an appropriate speed, hold the operation box with one hand and press and hold the hoisting push button switch or hoisting valve button switch, while using the other hand to adjust the lifting speed. The operation is complicated because the lifting speed must be adjusted by operating a resistor.

[Purpose and structure of the invention]

It is an object of the present invention to provide an operation device for a two-speed electric hoisting device having a speed change setting device that can advantageously solve the above-mentioned problems. A low speed adjustment setting device VR1 and a high speed adjustment setting device VR2 connected to the speed change control circuit 4 are provided in an operation box 5 connected to a cable 2 hanging down from the hoisting device main body 1, and the above-mentioned operation In the box, a two-stage winding pushbutton switch PB-U is connected to the low speed adjustment setting device VRI and high speed adjustment setting device VR2'e by pressing the first step and the second step. 2 for lowering which is switched and connected to the speed change control circuit 4 by pressing the stage to the low speed adjustment setting device VRI and the high speed adjustment setting device VR2.
The present invention provides an operating device for a two-speed electric hoisting device having a speed change setting device, characterized in that a push button switch PB-D is provided.

〔Example〕

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

1 to 5 show an embodiment of the present invention, in which an electric hoist main body is installed in an operation box 6 connected to a cable 2 hanging from an electric hoist main body 1. A low speed adjustment setting device VR1 consisting of a variable resistor and a high speed adjustment setting device VR2 consisting of a variable resistor are connected to the speed change control circuit 4 provided in the operation box B. Low speed adjustment setting device V R when pressing
1', r: A two-stage winding pushbutton switch PB-U that connects to the speed change control circuit 4 and switches the high speed adjustment setting device VR2 to be connected to the speed change control circuit 4 when the second step is pressed.
is provided, and the low speed adjustment setting device VR1 is connected to the speed change control circuit 4 when the first step is pressed, and the high speed adjustment setting device VR2 is connected to the speed change control circuit 4 when the second step is pressed. 2-stage push button switch for lowering PB
-D, and the adjustment knobs 5 and 6 of the low-speed adjustment setting device VR1 and the high-speed adjustment setting device VR2 are provided on the front surface of the operation box B, and furthermore, each The upper part of a lid 7 that covers the adjustment knobs 5 and 6 is pivoted, and the lid 7 is held in the closed position by a lid closing spring 8, and when the electric hoist is in operation, the low speed adjustment setting device V
R1 and the knobs 5 and 6 of the high-speed adjustment setting device VR2 are not operated.

On the front of the operation box, there is a low speed adjustment scale that corresponds to the low speed adjustment setting device VR1. A display board 11 having a high-speed adjustment scale 10 corresponding to a high-speed adjustment setting device VR2 is fixed, and a push button 12 of a two-stage push button switch for hoisting PB-U and a two-stage push button switch for lowering PI3-D are fixed. A push button 15 is provided on the front surface of the operation box 6.

Figure 5 shows the operation control circuit, and when the 1st stage position of the two-stage hoisting pushbutton switch PB-U't is pressed, the hoisting Since contact A is turned on, hoisting operation of the electric hoisting device is started, and in this state, the low speed adjustment setting device V is connected to the speed control circuit 4.
Since R1 is connected, its low speed adjustment setting device VR1
The hoisting operation is performed at a predetermined low speed set by.

In addition, the two-stage pushbutton switch PB-U' (i=
When pushed to the second position, the high-speed operation contact B in the two-stage hoisting pushbutton switch P]3-U is turned on, relay R is energized, and contact 14 of relay R is switched. Since the high speed adjustment setting device VR2 is connected to the speed control circuit 4, the hoisting operation is performed at a predetermined high speed set by the high speed adjustment setting device VR2.

When the two-stage hoisting pushbutton switch PI3-U is returned to the first stage position, hoisting operation is performed again at low speed, and when the pressing force is released from the two-stage hoisting pushbutton switch PB-U, hoisting operation resumes. will be stopped.

Next, when the lowering two-stage pushbutton switch PB-D is pushed to the first position, the lowering contact C of the two-stage lowering pushbutton switch PB-D is turned on, so that the electric hoisting device can no longer be hoisted. The lowering operation is started, and in this state, since the low speed adjustment setting device VR1 is connected to the speed change control circuit 4, the lowering operation is performed at a predetermined low speed set by the low speed adjustment setting device VR1.

Also, when the two-stage pushbutton switch PB-Dk for lowering is pressed to the second stage position, the two-stage pushbutton switch PB-Dk for lowering is pressed.
- The high-speed operation contact at D is turned on and relay R
is excited, the contacts of the relay R are switched, and the high speed adjustment setting device VR2 is connected to the speed control circuit 4.
The lowering operation is performed at a predetermined high speed set by the high speed adjustment setting device VR2.

The two-stage pushbutton switch PB-D- (i7th i
When it returns to the stage position, lowering operation is performed again at low speed.
When the suppressing force is released from the two-stage pushbutton switch PB-D for hoisting, the hoisting operation is stopped.

When the two-stage hoisting pushbutton switch PB-U' is pressed, the interlock contact E turns off, so in this state, the hoisting two-stage pushbutton switch PB-D-! Even if i= is pressed, the lowering operation circuit does not operate. Also, when the lowering two-stage pushbutton switch PB-D is pressed, the interlock contact F turns off, so in this state, the two-stage hoisting switch P
Even if B-Uk is pressed, the hoisting operation circuit will not operate. Note that since the speed change control circuit 4 is conventionally known, a description of its configuration will be omitted.

When carrying out this invention, as shown in FIGS. 6 and 7, a low speed adjustment setting device VR1 and a high speed adjustment setting device VR
A screwdriver retaining groove 1 is provided on the protruding end of the adjusting shaft 15 and 16 of 2.
7 may be provided so that the adjustment shaft cannot be rotated fully 15°16 by hand, and each low speed adjustment setting device VR1,
All high-speed adjustment high-speed adjustment setting devices are housed in the entire R2 box, and usually each low-speed adjustment setting device VR1, R1, node setting device VR
2 may not be able to be adjusted.

The low speed adjustment setter VR1 and the high speed adjustment setter VR2
Alternatively, instead of the variable resistor, an adjustment setting device such as a potentiometer that changes the electrical signal by mechanical operation means may be used, and the speed control circuit 4 may be provided within the operation box 3.

〔Effect of the invention〕

According to this invention, the low speed adjustment setting device VR1 and the high speed adjustment setting device VR2 connected to the speed change control circuit 4 are provided in the pre-operation screw connected to the cable 2 hanging from the electric hoist main body 1. is provided, and a low speed adjustment setting device V is provided at the bottom of the operation box by pressing the first step and the second step.
A two-stage winding push button switch PB-U, which is selectively connected to the speed change control circuit 4 to R1 and the high-speed adjustment setting device VR2,! =
Low speed adjustment setting device VR by pressing 1 step and 2 steps
1 and the high-speed adjustment setting device VR2 are provided with a two-stage lowering pushbutton switch PB-D which is connected to the speed change control circuit 4.
By pressing -U or the two-stage lowering pushbutton switch PB-D, the electric hoisting device can be hoisted at a predetermined low speed or lowered at a predetermined low speed. The electric hoisting device can be hoisted at a predetermined high speed by simply pressing the hoisting pushbutton switch PB-U or hoisting pushbutton switch PB-D'ff: to the 2nd position. , and lowering operation at a predetermined high speed. Therefore, it is possible to easily perform hoisting operation or lowering operation at a low or high speed that is optimal for the site of use with one hand, and furthermore, the low speed adjustment setting described above can be performed easily. The controller VR1 and the high-speed adjustment setting device VR2 are installed in the operation box located at a low level on the floor within the reach of the driver. Effects such as being able to easily adjust to the optimum low and high speeds can be obtained.

[Brief explanation of drawings]

1 to 5 show an embodiment of the present invention, in which FIG. 1 is a side view of an electric hoisting device having a driving operation device of the present invention, and FIG. A front view of the operation control device for the speed electric hoisting device, Fig. 5 is GG in Fig. 2.
4 is a front view of the speed display section, and FIG. 5 is a driving operation circuit diagram. FIG. 6 is a front view showing another example of the operating device for the two-speed electric hoisting device, and FIG. 7 is the H-
It is an H line sectional view. In the figure, 1 is the main body of the electric hoisting device, 2 is a cable, a loaf operation box, 4 is a speed change control circuit, 5 and 6 are adjustment knobs, 7 is a lid, 8 is a spring for closing the lid, 12 and 15
is a push button, VRl is a low speed adjustment setting device, VH2 is a high speed adjustment setting device, PB-U is a two-stage push button switch for winding, P
B-D is a two-stage push-button switch for lowering. JP-A-63-GO899 (7)

Claims (1)

[Claims] A low speed adjustment setting device VR1 and a high speed adjustment setting device VR2 connected to the speed change control circuit 4 are provided in an operation box 3 connected to a cable 2 hanging from the electric hoisting device main body 1, and the above-mentioned A hoisting device 2 is provided in the operation box 3 to switch and connect the low speed adjustment setting device VR1 and the high speed adjustment setting device VR2 to the speed change control circuit 4 by pressing the first step and the second step.
The low speed adjustment setting device VR1 and the high speed adjustment setting device VR can be set by pressing the step push button switch PB-U and the 1st step and 2nd step push.
1. An operating device for a two-speed electric hoisting device having a speed change setting device, characterized in that a two-step push button switch PB-D for hoisting lowering is provided to switch and connect a speed change control circuit 4 to a speed change control circuit 4.