SU1444484A1 - System for automatic control of cable feed into working member of cable-laying machine - Google Patents

Abstract

The invention relates to the field of construction and road machines and m. used on cable laying machines. The purpose of the invention is to reduce the tension and strain of the fiber cable during installation. The device contains a force sensor consisting of a spring-loaded unit I mounted on axis 2, a rod 3, 4 and a spring 7.8. The front part of the rod 4 is connected to a control throttle (RD) 12. Passage through unit I The fiber cable moves the rods 3 and 4, which act on the RD 12. The latter is connected to the hydraulic motor and increases the flow of fluid to it. By reducing the force on unit 1, the RD 12 reduces the flow of fluid to the hydraulic motor and reduces its rotational speed. This adjusts the amount of force required to unwind the cable and bend it. With the full opening of the taxiway 12, the force does not decrease and the alarm is triggered, and the machine will stop as soon as possible. 2 Il. .

Description

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The invention relates to construction and road machines and can be used on cable laying machines, plowing machines.

The purpose of the invention is to reduce the tension and strain of the fiber cable during installation.

Figure 1 shows the design of the force sensor and the mechanism for controlling the Q or throttle; in fig. 2 shows the hydraulic scheme of the automatic cable feed control system.

The force sensor consists of a block 1 through which the fiber passes, installed on axis 2, J5, two rods 3 and 4, which can be moved in guides 5 and 6. The rods 3 and 4 are spring-loaded using springs 7 and 8. The boom 4 is connected at 20 using a driver with a yoke 10 and a driver 11 with a adjustable throttle 12. On the rod 3 in its front part there is an adjusting bolt 13 and a constant open limit switch 14 coaxially with the rod 14. To the throttle 12 through a common the distributor 15 summed up the pressure hydroline 16, which connects n is a choke 12 with a hydraulic motor 17 unwinding drive bay. The electrical part of the circuit includes a common switch 18, a power source 19, a time relay 20, light and sound alarms consisting of a light bulb 21 and a sound alarm 22, as well as an electromagnet 23 controlling the electrodistributor valve 24, which, when triggered, provides the connection of the pressure hydroline 16 through throttle 25 and check valve 26 with a single-acting hydraulic cylinder 27. The hydrocyclicdron rod is connected by means of a flexible coupling 28 with the t-rims of the side clutches of the machine.

The automatic control system works as follows.

Light guide cable, passage through

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unit 1, while increasing the force, moves the shanks 3 and 4 in the guides 5 and 6, while compressing the springs 7 and 8 and turning the beam 10 simultaneously, thereby increasing the area of the live section of the throttles 12. Due to this, the flow of fluid to the hydraulic motor 17 increases and the rotation speed of the cable unwinding drive mechanism. While reducing

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The forces of force on block 1 of the rods 7 and 8 move the rods 3 and 4 upward, and the rocker arm 10 rotates to throttle the fluid and thereby reduces the rotational speed of the hydraulic motor 17. Thus, the force required to unwind the cable and bend it is controlled. . A permanently open limit switch 14 is installed coaxially with the rod 3. If the force does not decrease when the throttle 12 is fully opened, the head of the bolt 13 closes the contacts of the limit switch 14 and the operator immediately receives an audible 22 and light 21 signal to interfere with the cable unwinding mechanism. If this is not done, then after a specified period of time, the control signal time delay relay 20 will operate, the electromagnet 23 will zapktan and the spool 24 will connect the pressure hydroline 16 hydraulic system to the hydraulic cylinder 27, which by means of a flexible link 28 will turn off the side friction and the machine will stop. At this time, the cable unwinding will continue. When the force on unit 1 is reduced, springs 7 and 8 will move the rods 3 and 4, the limit switch 14 will open the contacts, de-energize the electromagnet 23, the spool 24 will connect the cavity of the hydraulic cylinder 27 through a throttle to the drain line the hydraulic system and the hydraulic cylinder 27, by means of the flexible rod 28, will smoothly turn on the machine propulsion and the cable laying process will be resumed.

The presence of an automatic control system for supplying the cable of the light guide ensures that the machine operates in an automatic mode, protection from deformation of the cable, which has limitations on the amount of bending and stretching, and also makes it possible to release the second operator on the machine that provides manual control of the cable feed.

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Claims (1)

Invention Formula The system of automatic control of the cable supply to the working body of the cable layer, containing a hydraulic and torus unwinding drive, pressure, drain and flow lines. The pneumatic distributor, whose nhol is connected to the motor, and the outlet to the hydraulic lines, and the hydraulic cylinder, characterized in that the system is equipped with an adjustable choke, electro-hydraulic distributor, back valve, to reduce the tension and deformation to the fiber of the optical fiber, time relay, limit switch, power source, sound and light signaling devices and force sensor, dim. a spring-loaded unit connected via rods with guides, one of the rods being designed to interact with a limit switch, and the other mechanically connected to an adjustable choke, the input 7 five The outrigger is connected to the motor of the unwinding drive motor, and the output is connected to the hydraulic distributor, and the electric hydraulic distributor is connected to the pressure, drain and flow hydraulic lines and through parallel-connected choke and non-return valve and the second to the first output of the time relay, the second output of which is connected to the power source through the contacts of the limit switch, and the light and sound signaling devices are switched on each other and between the second output of the time relay and the first output of the power supply.