JPS58135092A - Detector for tilt of hanging beam - 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 present invention relates to a device for suspending a common suspension beam for two hoisting devices.

When lifting a heavy load 1 as shown in FIG. Rope 7 lowered from 6
．． 8 hangs both ends of the hanging beam 9 horizontally, and this hanging beam 9
A load l was hooked onto a hanging rod 1G supported from the center. Each hoisting device 6,6 has a hoisting drum 11.12
A rope 7.8 is wound around this hoisting drum 11.12. Therefore, when the rope 7.8 is hoisted and let out by the rotation of the hoisting drum 11.12, the hanging beam 9
moves up and down, and load 1 moves up and down. As shown in Fig. 2, the hanging loft 10 is constructed so that the hanging beam 9 is tilted and the rotation of the four trunnions 13 causes no strain, but when the tilt exceeds the limit, the hanging rod 10 hits the hanging beam 9. In addition to causing strain, the work of inserting and lowering the load 1 into the case 2 is difficult. For this reason, it is necessary to raise and lower the suspended beam 9 in a horizontal state. Conventionally, a pendulum-type pointer 14 is attached to the hanging beam 9, and the amount of deflection of the pointer 14 is seen on the scale 15, and the rotational speed of both hoisting drums is controlled to keep both ends of the hanging beam 9 at the same height level. was held in However, since the operator's cab and the pointer are located far apart, there is a difference in the reading wA of the scale, and since the horizontal length of the hanging beam 9 is long, the deflection sensitivity of the pointer 14 to the inclination of the hanging beam 9 is low. It was bad and useless for maintaining accurate leveling.

An object of the present invention is to reliably detect the inclination of a suspended beam.

The main point of the present invention is that, as a basic configuration, in a device in which both ends of a hanging beam are suspended by two hoisting devices, each hoisting drum of each of the hoisting devices has a synchronized transmitter that is rotatably interlocked with the hoisting drum. each synchro transmitter and a differential celsyn machine are connected to each other so as to receive a signal based on the detection output of each synchro transmitter as input, and a meter display device is connected to the output side of the differential celsyn machine. It has a hook level difference detection device that detects the height level at both ends of the hanging beam from the amount of rotation of the hoisting drum, and detects the height level at both ends of the hanging beam that causes a large vertical difference even at a small inclination angle. The point is that the occurrence of tilt can be detected and displayed reliably by comparing the values.

An embodiment of the present invention will be described below with reference to FIG.

Hoisting drum 1 with a rope wrapped around one end of the hanging beam
The drum rotating shaft of 1 and the synchronized transmitting horizontal force are interlocked and connected by a chain 7 and sprocket means 4.
The wheel and the synchro transmitter 21 are interlocked and connected by a sprocket means.

The output side of the synchro transmitter 4 is connected to the input side of the counting machine, and the output side of this counting device is connected to one input side of the differential cell synchronizer 2. The output side of the synchro transmitter 4 is connected to the input side of the counting machine. The output side of this counting device is connected to the other input side of the differential cell system via a cup-to-n. A meter display array 29 for count display is connected to the auxiliary output side of each counter 24, 26. A meter-based indicator is connected to the output side of the differential cell generator 2.

In this embodiment, when each hoisting drum 11.12 is used in a single eclipse, the coupler γ is removed and each hoisting drum 11.1
Each row of meters displays the amount of rope up and down operation in step 2.

The height of the suspended load can be determined by detecting it individually using a mackerel.

Next, when performing lifting work using both hoisting drums 11 and 12, which are suspension beams, first ground the hoisting beams horizontally and make each device level difference 0, then connect the coupler 4 and connect both hoisting drums 11 and 12. With 12 rotations, the rope that supports the hanging beam is wound up and let out. In this case, both hoisting drums 11
．． The suspension beam is raised and lowered while keeping the rotation amount of 12 the same as possible and keeping it as horizontal as possible.

When the hoisting drum 11.12 rotates, the amount of rotation changes from the synchro transmitter 20. The input shaft of m is rotated via the chino sprocket means 4, 23, and an amount of output corresponding to the amount of rotation is inputted from the synchro transmitter 21 to the counters 24, 26@. Counting equipment by this input.

Uta performs the counting, and the output according to the result is the counting device, 2
6 to the differential celsin machine, and the differential celsin machine outputs the difference between the outputs from each counting machine and 26, depending on the output of the differential celsin horizontal addition, which is the indicator of the meter display (equipment). operate only by the same amount. Therefore, the operator reads the amount displayed on the meter display in the driver's cabin and continues to level the hanging beam until the displayed amount reaches a value indicating that the hanging beam is horizontal. Therefore, there is no reading error, the operation is easy, and the accuracy of horizontal control is increased.

Even with a small inclination, there is a large difference in the height level between both ends of the suspension beam, so by detecting this height level, it is possible to detect a small inclination with high sensitivity.

As described above, according to the present invention, the height of both ends can be determined from the amount of rotation of the hoisting drum by utilizing the characteristic of a horizontally long hanging beam that tends to cause a large difference in the height level at both ends even with a small inclination angle. Since the inclination of the hanging beam can be detected by detecting the inclination of the hanging beam, an effect can be obtained in which the inclination of the hanging beam can be reliably detected with high sensitivity.

[Brief explanation of the drawing]

Fig. 1 is an overall view showing the lifting work using a conventional hanging beam, Fig. 2 is a cross-sectional view taken from the person-to-person arrow shown in Fig. 1, and Fig. 3 is an extraction of the main parts according to an embodiment of the present invention. It is a diagram. 9... Hanging beam, 11.12... Hoisting drum, addition. 4...Synchronized transmitter, Uta...Differential cell synchronizer, I...Meter display fee Patent attorney Usui 1) Li Chusai 1 Figure 'I'2rlJ Sai 3 1 Figure

Claims (1)

[Claims] 1. In a device in which both ends of a hanging beam are suspended by two hoisting devices, for each hoisting drum of each hoisting device,
A synchro transmitter is connected to the hoisting drum so as to be rotatable in conjunction with each other, and each of the synchro transmitters and a differential cell synchronizer are connected to receive a signal based on the detection output of each synchro transmitter as input, and the differential cell synchro A suspension beam inclination detection device characterized by having a six =≠ indicator connected to the output side of the machine.