JPS58146811A - Lifting height display - Google Patents

Abstract

PURPOSE:To simplify the constitution of a display circuit and to reduce costs, by making the winding length in each one rotation of a winding drum numerically coincident beforehand with the number of the output pulse signals of a number of revolution-pulse signal converter. CONSTITUTION:Winding grooves 21a are inscribed on the outside surface of a winding drum 21, and as the winding drum rotates, a rope 6 is wound to lift a material to be lifted. If the number of pulse signals of a number of revolution- pulse signal converter which operates cooperatively with the drum 21 is beforehand so set as to coincide with the winding length of the rope, the length of the material to be lifted is determined from the count value of the number of pulses. The constitution of a display circuit is thus simplified.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an elevating and lowering 14-volume display device.
This product relates to a device for displaying the height of various types of hanging objects, such as elevating ceilings, elevating ceilings, etc., that are raised and lowered on stages in assembly halls, gymnasiums, etc.

It is configured as shown in the subordinate ζ0@0@Shigiden Tsumugi 1- and the first garden. That is, in Fig. 1, 1 is a motor connected to the KI& Low! , 7 is a suspended object such as a paddle to be lifted and lowered, 8 is a chain, and 9 is a rotating disk that rotates in conjunction with the winding drum 4 via the chain 8, and an optical detection device (both 4 are not shown). etc., 40 rotations of the winding drum, a rotary encoder that outputs a pulse signal according to the number of rotations, 11 rotations - pulse signal exchanger, 1O equipped with a switch getan for lifting and lowering, 9 operation panels. , 11ri rotation speed/dulls signal converter 9 and a counting/arithmetic circuit connected to the output side of the operation panel 10, 12 a display drive circuit, and 13 a digital display using a light emitting I-diode or the like.

In this device, an electronic circuit section 14 consisting of a stitch count/arithmetic circuit 11, a display drive circuit 12, and a digital display 13 is constructed as shown in FIG. (b) In the figure, the rotation speed/main pulse signal from the I pulse signal converter 9 is UP.
UP/T) OWN counter that can count and DOWN stitches is added, trench 9υP4℃ resistant counter 11a
K is provided with an UP terminal 11b and a DOW)l terminal lie to which rising pulse a and falling pulse b obtained by operating the operating panel 10 are applied.

UP/I) On the output side of the OWN counter 1laO, there is an arithmetic circuit li that converts the count pulses into low and CO @ head lengths.
d is connected. These υP/I)OWN counter 11
m and the calculation circuit 111, the number of stitches/calculation circuit 1
1 is configured. As described above, the display drive circuit and the digital display 13 are connected in sequence to the arithmetic circuit 114.

Next, the operation of this display device will be explained. Oh, the rotation speed...
The gear ratio of the winding drum 4 is 1.
Assuming that the take-up drum is connected at $1, 1401 rotations, that is, the number of revolutions is 9, and 11 rotations: Signal conversion m*ow'rolla) 100110-4 pulse signals are output. , at the beginning of one run, the suspension DI17 is KToJ on the floor), and at this time UP/1
It is assumed that the count pulse number of the OWN counter 111 is set to O.

First, when raising the hanging proboscis 7, the shimotor 1 rotates forward by operating the corresponding switch methane on the operation panel 10, the winding drum 4 rotates via the reducer 2, and the rope 6 is wound up. Raise the hanging object 7. During this time, the output t4 pulse signal of the rotation speed/medium pulse signal converter 9 is
11, but at the same time, a rising pulse a which is at H level only during the rising operation by pressing the switch methane from the operation panel lO is inputted via the UP terminal 11b, and the UP/I) OWN counter l1m is inputted. Then, the pulse signal from the pulse signal converter 9 is counted during the period of this rising pulse a OH level.

Assuming that the count/4 pulse number is 300, the arithmetic circuit Ua calculates the number of rotations of the winding drum 40, and further calculates the rope winding length L' per 1 rotation of the winding drum 6 from the rope winding length L' determined in advance. Calculation is performed to find the entire winding length t. In other words, if t' is 匍[1], then t-3
A signal corresponding to the winding length of low f6 and the height after the hanging object 7 has been raised is sent to the display drive circuit 12, which performs a calculation such as 00÷100×(company);270[1]. and is displayed on the digital display 13.

In addition, when raising the hanging fist 7 from any 1 & name, add the count pulse number n of the raising period to the number of count pulses of the OUP/1) OWN *unter l1g before the raising operation. Find NW*, +*, t=N÷100X90
Convert to the height of the hanging object 70 using 0 calculation, or t is 0N before the lifting operation.1) The volume of the object 7 is L=+a÷160.
Find it with X90 and add the maximum value.

When lowering the suspended object 7, the operation panel 1 is also used.
During the descending d Lus bOH level period, the internal Lus signal is counted, and this count pulse number is subtracted from the count pulse number before the lowering operation, and when the number is good, it is converted to the height of the hanging object 70.

t, rising pulse a and falling pulse bri operation panel lO
It is generated using the relay terminals used in the lift switch circuit.

Such a display device is useful as 40 to accurately display the height of the baton, etc., and a lighting device to illuminate the stage is installed at 41.In the case of raising and lowering the baton,
The role that lighting plays in a scene of a play is extremely important in terms of production, and it is desirable for lighting personnel to always accurately indicate the height of elevation such as 1.5 tons. Display devices can meet this need.

However, in this conventional display device, the calculation circuit lid needs to perform calculations according to the low f@IlK length t' of the one-rotation tooth determined by the outer circumferential length of the winding drum 4, which complicates the circuit configuration. There are drawbacks to
If υL' is a halfway value depending on the arbitrary outer diameter of the drum 4, there will be drawbacks such as an extremely complicated circuit and increased costs.

The present invention has been proposed in view of the above points, and its object is to convert the winding length of -f per one revolution of the winding drum into the number of rotations and the output of the Norls signal converter/bandwidth. By arranging the number of pulse signals to match numerically, there is no need for a conventional arithmetic circuit that converts the count/4 pulse number into the winding length of the rope. It is an object of the present invention to provide an optical elevation height display device which allows direct reading of height, simplifies the structure of a display circuit, and reduces costs.

Hereinafter, embodiments of this li@ will be described along with the drawings.

Figure 3 shows a drum 21 that looks like a wire rope. The quantity SO output Δ is formed to be equal to the pulse interval. ], as shown in 411(b), the winding drum 21opxm- is set to, for example, [1], and the low f6
C) When - is set to 0.5 t2) in the straight 4, the row 16 becomes 100 ((131)
181 rotation of the winding drum of the signal converter 9! The output/quantity of I) can be made to match the number of pulse signals (100).

Note that the winding drum 121 has a winding 421 that matches the thickness of the rope 6 on the outer W4 surface of the drum body as shown in Fig. 83.
A is engraved, and as the winding drum 21 rotates, the ropes 6 are sequentially lined up and wound or unwound along the axis of rotation of the winding drum 210.

However, in the present invention, when the suspended object 7 is lifted from the operation panel 10 by the lifting operation from the floor surface, the winding drum 21 rotates, for example, three times during the period when the 9th pulse a is at the H level. Then, 300 pulses are obtained from the rotation speed...4 pulse signal converter 9, and these are sent to the UP/I) OWN controller.
If you count at 1 m and display this number as it is on the digital display 13 via the display drive circuit 12, as you can see, the numerical coincidence between the count/roll number and the winding length of low f6, The height of the hanging object 7 after being raised is displayed as is on the order of 1.

The above operation is the same when raising or lowering the suspension D*7 from any height; in any case,
Arithmetic circuit 11- for converting the count Noyals number into the winding length of low f6 or the height of the hanging object 7 as in the past.
can be treated as construction costs.

As mentioned above, according to the present invention, l(g
The length of the rope turns per one rotation is configured to numerically match the number of rotations, the output of the 9-Russ signal converter, and the number of 1-Russ signals. No need for calculation circuit to convert take-up length IK.
The height of the suspended object can be directly read from the dulse number.
This has the effect of simplifying the structure of the display circuit and reducing costs.

In addition, the height of hanging objects such as one ton can be displayed accurately at all times, making it easy and reliable to set stage lighting equipment, etc. to a predetermined height, which is extremely useful for production effects, etc. It has the following advantages.

[Brief explanation of drawings]

＠Figures 1 and 2 are schematic diagrams of the conventional display device, Figure 3 is a perspective view of the winding drum used in the present invention, Figure 4 ((a) is also a fresh side view, and ) is a sectional view of the main parts from the front. 6...o-f, 7... Hanging object, 9... Rotation speed/pulse signal converter, +ta...UP/I) OWN counter, 12 ... Display drive circuit, 13... Digital display, 21... Winding drum, 21m... Winding groove. Figure 2

Claims (1)

[Claims] By the rotation of the take-up drum, the rope attached to the take-up ram Kl is raised and lowered, and the 4I take-up drum is raised and lowered. The height of the suspended object is digitally displayed by increasing the number of stitches on the OWN counter according to the rotation speed.
? The winding length of the rope of Ikl is the length of the rope I1l)]IE
Drum 01 rotation and the above-mentioned arm pulse signal number and numbers - a lifting height S* indicating device that is composed of a number of numbers and a pulling motion.