JPS5974892A - Detector for position of hung load of crane - 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 The invention relates to a shipping position detection device for a crane.

1st [? ,lt,−,1,of the mobile crane (11
11, an upper revolving body 3 is rotatably mounted on a lower traveling body 2 of a pile-driving wooden body 1, and a lower pin of a boom 4 is mounted in front of the upper revolving body 3. 5, and the upper part of the boom 4 is supported by a wire rope 7 which is unwound through a pendant rope.

Furthermore, there is a hook hoisting Drano 8! ] Several unwound wire lobes 9 are hung on a hook 12 via a load detector 10 and a tube 11.

Depending on the crane work contract environment or construction disputes, the hook 12 and the suspended load 14 may not be visible from the driver's cab 13. If it cannot be accurately grasped, the efficiency of cargo handling operation C6 will decrease.

The invention has been made in view of the above, and includes a wire winding amount detection sensor that detects the amount of hoisting and lowering of the hook hoisting wire lobe, a swing angle detection sensor that detects the swing angle of the upper rotating structure, and a boom angle sensor. The driver's cab is equipped with a digital input section for inputting the boom length and the number of ropes for the hook hoisting wire robe, an origin set switch for setting the origin of the lifting position, and a lifting load. Move ξII; T digit 1? j f 14i-: Memory Seratos switch and nIJ dragon wire entanglement sensor sensor Turn angle detection sensor, angle detector, and calculate the input signals from the digital input section to determine the position of the suspended load, respectively. This equipment provides a crane hoisting load detection device consisting of a digital display section and a position detector equipped with a proximity indicator lamp that lights up as the origin (a) f4' or memorized position approaches. The purpose of this system is to enable operators to accurately grasp the size and amount of movement of shipments, and to perform crane operations safely and quickly.

Hereinafter, one embodiment of the present invention will be explained in detail with reference to FIGS. 2 to 4. In the diagram, the same numbers as in Figure 1 represent the same things, and left and right mean the driver's seat. That's what it means.

A wire winding detection sensor 15 for detecting the rotation speed and rotation direction of the sheave 11 at boot 4's l i;t+ is arranged to detect the winding and lowering of the wire lobe 9. , boots, 4 lower part VO', a layer 16 is arranged at the angle 1 for detecting the boom angle, and the upper rotating body (
Turning angle detection sensor 1f for detecting the turning angle and turning direction of the two-part rotating body (not shown): Peaks and valleys of 1111 teeth m-18 of the lower traveling body (1-1 not shown) 6q,
Two detectors are arranged so as to be connected to about 16 detectors 20 each.

Figure 3C is a block diagram of the invention, Figure 4 is the position detector 2.
0, the position j, the L detector 20, the wire winding f, the signal A from the sensor 15, the signal B from the turning angle sensor 17, the signal C from the angle detector 16, and Boom length input section 22, loaf hanging number rt, 1s
Digital input signal from 23), 1-point 7-point switch 24 for hanging load 1 toy, control signal E from memory 7-unit 25) η+XFc performance W1~, display IRG
The position of the VtC hanging load, i.e., before and after the set origin position,
It is configured to show two rocks for moving left and right and up and down.

In addition, the position detector 20 includes a power switch 21, a front and back 16
Display section 26, left and right position display section 27, up and down position display section 28
, a proximity indicator lamp 29, 29, 29, 11, a source indicator lamp 31, and a display changeover switch 3 () are provided. The user selects whether to display the movement @ as a distance M or as an angle (degrees).

Figures 5 to 8 are diagrams showing the direction of the hook 120. Figure 5 a1 Figure 6 a In the publication, the number 8 is rolled up and the 5th T1
Section 1b1 No. 61 So 1b shows the position 02 of the hook 12 when the boom 4 is raised to boom angle α, eliboom angle α, and No. 711N (l b ) No. 8
The figure shows the position 1ift Os of the hook 12 when it turns to the right by an angle β from the state shown in Figure 5bX Figure 6.0 11! : Hoisting the hook hoisting wire robe (Rule I) : Number of hook ropes, : Boom length L2 : Plane distance α1 from the center of rotation at the boom installation position 1i. Boom angle α2 at second hook position 1^゛0: Hook position 1t
i1. (Boom angle β of Js: 1% of the hook position from the hook position O, and the turning angle of Us, from the origin O of the hook 12 to the point O3) 12. IuY7, right X1 movement! l! I] Japan is expressed by the following formula.

112=L, (pinα2−sinα,),+−
l/nYl! ” 1no+ (cy α2'01
) S β -ccx α, ) t IJ2
(coq β −1)X, = sinβ(JJl
ay, (12L2) Next, we will explain how to operate the crane suspended load 1h detection υμ of the present invention. First, turn on the power switch 21 (, l N l, then the length of boom 4 and the number of lobes The boom t-+ a input 1'X1\2
2. Boom length input from the lobe loss input section 23;
If there is no change in the number of lobe multiplications, it is sufficient to set it once.

Next, operate the display changeover switch 30 to select either angle (degree) display or distance M display.

Next, move it to an arbitrary position, such as the hook 120 position, and place the origin set switch 24 at that position.
When the iON is turned on, the point O in FIG.
(O is displayed on each display section 28.

Next, hook upper right drano, wind up 80, raise and lower boom 4,
Due to the rotation of the upper revolving body 3, a certain position 08, the 7th position
If you move the position 03, the front and rear 16 display sections 26, left and right 1.1 display section 27, upper and lower 111 display sections 2.
An angle (degree) or distance 1v11:M is displayed in 8.

iFi Us (digit 1 "τ0" in Figure 7)
．． ), when the memory set switch 25 f is turned on, the position 03 is memorized.

When the hook 12'ff' is moved again and approaches the original position 0, the proximity indicator lamps 29, 29.29 start blinking,
When the hook 12 reaches the original position O, all of the proximity indicator lamps 29+291 are lit. Also, when the hook 12 approaches the position Os (position 0 in FIG. 7) when the memory set switch 25 is turned ON, the proximity indicator lamps 29, 29, 29t;
Light.

As is clear from the above description, when the present invention is carried out,
Since the moving rectangle of the suspended load can be accurately grasped, the work can be performed accurately, safely and quickly, especially for crane work where the position of the suspended load or hook cannot be confirmed from the operator's cab, or for cargo handling operations such as passing through a certain important position. There is an advantage that it can be done.

[Brief explanation of the drawing]

Figure 1 is a g4II side view of a conventional crawler crane, Figure 2
3 is a block diagram of the present invention, FIG. 4 is a plane view of the position detector, and FIGS. 5 and 7 are the hook position IR. ', r: indicates lT
l11 side view, 6th ray l r;l, plan view of Figure 5 1,
7.1 is a side view showing the position of the hook, and FIG. 8 is a plan view of FIG. 7. 1 is a crane body, 4 is a boom, 8 is a hook hoisting drum, 12 is a hook, 15 is a wire winding amount detection sensor, 16
is an angle detector, 17 is a turning angle detection sensor, 20 is a position detector, 22 is a boom length input section, 23 is a lobe hanging number manual section, 26 is a front/rear 1 way display section, 27 is a left/right position display section, 28t is a vertical position display section, and 29 is a proximity display lamp. Sumi 1 Komugi 51 Figure 6 Chen 1 Su No. 7 N b. Australia 8 map

Claims (1)

[Claims] l. A wire winding detection sensor that detects hoisting/lowering D' of the hook hoisting wire rope, a swing angle detection sensor that detects the swing angle of the upper revolving structure, and an angle detector that detects the boom angle are installed, respectively. The cab is equipped with a digital input section for inputting the boom length and the number of hook hoisting wire rope ropes, an origin set switch for setting the origin of the lifting position, and a memory for storing the position when the suspended load is moved. a set switch, a display unit that calculates the human power signals from the wire entrainment liquid detection sensor, the turning angle detection sensor, the angle detector, and the digital input unit to digitally display the position of the suspended load, and the origin point. Crane hoisted load position detection device 1'+ () consisting of a position IF detector equipped with a proximity indicator lamp that illuminates when approaching a position or a memorized position.