SU1355776A1 - Pneumatic device for controlling multiple-driven set - Google Patents

Abstract

The invention relates to control devices for mining machines, intended for the erection of tubular arch support during the combine mining of capital mine workings under conditions of increased explosion hazard. The device provides a 5 .11 7 enhancement of functionality by controlling the tubing cracker and increasing productivity by introducing an automatic mode for laying tubing in crepe layer semi-patterns. The device contains a control panel 15 with a Manual-Automatic mode switch, an operation switch 30 and the first setting device 20, a sensor 13 of the initial position of the propulsion motor, a sensor for receiving the tubing, an oil station 17, controlled hydraulic distributors 8, 10, 12, a drive 7 tubing motor, half-template movement actuator 9, frame movement actuator 11 and control unit 16. The device can operate in manual and semi-automatic modes. In the automatic mode, the tubing acts on the sensor 14 for receiving the tubing, and the propulsor of the tubing with a fist-stop acts I (L 10 77 00 SP JV vj 05

Description

On the sensor 13 of the initial position of the tubing motor, a trigger 28 is triggered, the output of which includes a switch 39 providing the output signal of the second setter 26 to the first input of the switch of the analog signals 22 and then to the control chamber of the analog pressure amplifier 40, the output of which is. connected to the entrance of the air motor 41 of the pumping station 17. At the same time, the output signal of the trigger 28 includes a hydraulic drive control valve 8. The invention relates to pneumatic control devices for hydraulic and pneumatic drives. igatel E various hoisting machinery.

The purpose of the invention is to enhance the functionality by controlling tubing crepe-laying machines and improving the productivity of the crushing unit,

 Fig. 1 shows schematically a tubing creamer designed to mechanize the process of erecting arched tubbing lining in mine workings when combining a mine; Fig. 2 is a diagram of a pneumatic control device with a tubing creamer.

A tubing creamer (FIG. 1) consists of a frame 1 with semi-patterns 2 mounted on it with the possibility of rotation around a swivel 3. Each of the semi-patterns 2 is equipped with a tubing propeller made, for example, in the form of a closed chain 4 with a knuckle mounted on it- stop 5,

The frame 1 is equipped with movement mechanisms 6.

Pneumatic control device

sloth tubing crepe paver

(FIG. 2) contains a drive 7 of a tubing driver with a three-position four-line distributor 8, a drive 9 for turning a half-frame with a three-position four-line distributor 10, 11 for moving the frame with a three-position four-line

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body tubing. At the same time, the speed of movement of the tubing engine is determined by the level of the output signal of the second pressure setting device 26. The operator can intervene in the automatic mode and increase the speed of movement of the tubing movement engine by influencing the first pressure setting device 20, the output signal of which goes to the second input of the analog signals switch 22, if the signal at its first input exceeds the signal to the analog pressure amplifier 40. 2 Il.

the distributor 12, the sensor 13 of the initial position of the tubing motor, the sensor 14 for receiving the tubing, the control panel 15, the control unit 16, the oil station 17, the first control supply channel 18 with the compressed air of the control circuits and the second power supply channel of the power circuit 19,

The output of the first pressure setting device 20 is connected to 15, x: the home of the comparison element 21 and the first input of the analog signal switch 22. The first output 23 of the three-position switch 24 is connected to the first information input of the two-channel switch 25, the power channels of the comparison element 21, the second pressure setting 26, element PROHIBITION 27, trigger 28, sensor 13 of the initial position of the tubing propeller and sensor 14 for tubing reception, and the second output 25 - to the input of the multi-position switch 30, the output 31 of which is connected to the first input of the element OR 32, p Connected by its output through a two-channel switch 25 to the control chamber of the distributor 8 of the drive of the tubing drive. The outputs 33-37 of the multi-position switch 30 are connected respectively to the control cameras of the distributor 10 of the drive for the half-frame, the distributor 12 for the drive-movement of the frame and the distributor 8 for the drive for the tubing drive, the power inputs of which are connected to the pump discharge line

station 17, and the outputs - with the inputs of hydraulic motors 7.9 and 11,

The output of the sensor 13 of the initial position of the tubing actuator is connected to the first input of the AND 38 element, the direct input of the BANGE 27 element and the second control input of the two-channel switch 25, and the output of the Tubing reception sensor 14 to the second input of the AND 38 element, the output of which is connected with the inverse input of the BAN-27 element and the S-input of the trigger 28, the R-input of which is connected to the output of the BANE 27. The output of the trigger 28 is connected to the second input of the OR 32 element and the control input of the single-channel switch 39, whose information input is connected to the output second zadatchi- 26 ka pressure. At the same time, the output of the single-channel switch 39 is connected to the second input of the analog signal switch 22 connected to the control chamber of the analog pressure amplifier 40, the output of which is connected to the input of the air motor 41, kinematically connected to the pump 42. The first feed channel 18 is connected to the input of the three-position switch 24, and the second 19 - with the input of the analog amplifier 40 pressure.

In the initial state, the three-position switch 24 is set to position 43, and the multi-position switch is set to position 44.

The device ensures the work of the crepe spreader in two modes, manual and semi-automatic.

In manual mode, the device operates as follows.

Three-position switch 24 (mode switch) is set to position 29 (Manual). In this case, power is supplied to the input of the multi-position switch 30 (operation switch). The operator switches the switch 30 to position 31, as a result of which its output signal through the element OR 32, the normally open contact of the two-channel switch 25 enters the control chamber of the distributor 8 of the tubing drive. The distributor 8 is switched, the working chambers of the drive 7 are connected to the tubing propeller, respectively, with the pressure and drain lines of the pump station 17, then

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The operator, the first pressure setting device 20, generates an analog signal which, through the switch 22 of the analog signals, enters the control chamber of the analog pressure amplifier 40. Its output signal, proportional to the pressure in the control chamber, is fed to the air motor input 10 liters 41 of the pumping station 17. At this, the specified load pressure of the pump 42 and the pressure in the control chamber of the analog pressure amplifier 40 correspond to a certain frequency of rotation 15 of the air motor 41, consequently, the determined supply of the pump 42. By varying the pressure in the control chamber of the analog amplifier 40, the pressure at a constant pressure 20 of the loading of the pump 42 can be proportional to the supply of the pump 42, and therefore And a drive speed 7 propulsor tubing connected via the distributor 8 to the pressure return line 25 and pumping station m. 17

Thus, observing the movement of the tubing motor visually, the operator sets the fist-stop 5 30 to the initial position. With the help of the supplier (not shown), the tubing is applied to the half-pattern 2 against the stop in the fist-stop 5. I will act on the first pressure adjuster 20, the operator transports the tubing all the way to the ground, working or previously laid down tubing. The process is repeated until the semi-patterns are fully loaded. The actuator 9 moves the half-frame and the actuator 11 moves the frame by setting the multi-position switch 30, respectively, at position 33, 34 and 35, 36, and the effect on the first pressure setting device 20,

In the semi-automatic mode of operation, loading of the half-patterns with 2 tubing is performed automatically.

For this, the Three-position switch 24 is switched to position 23 (Automatic). At the same time, the first power supply channel 18 is switched to the first information input of the two-channel switch 25, the power supply channels of the second pressure setting unit 26, the BANGE element 5g 27, trigger, erra 28, sensor 13

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40

45

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the initial position of the propulsor of the tubing and the sensor 14 for receiving the tubing. The operator, by the first pressure setting device 20, generates an analog signal, which is fed to the input of the comparison element 21, made with a response spring of the response level, while at its output, upon reaching the response threshold, a single signal is set, which is fed to the first control input of the two-channel switch 25 and switches it. At the output of a two-channel com-mover, the propulsion device conveys the tubing to the switch 25, a single signal is generated, which switches the distributor 8 of the actuator of the tubing drive 7. In addition, the analog signal from the setpoint driver 20 is fed through the control switch of the analog signal 22 to the control chamber of the analog pressure amplifier 40 and turns on pump station 17. In this case, the tubing propeller moves until the sensor 13 triggers the initial position of the tubing propulsion device, the output of which is fed to the first input of the element Both 38 and the second control input of the two-channel switch 25 both take the signal from the control chamber of the distributor 8, which is in the neutral position

40

of the suction station 17 from the drive of the tubing motor 7. The actuator 7 stops, the propulsor is ready for receiving, tubing. Then, the secured tubing is fed to the propeller up to the stop in the fist-stop 5 and acts on the sensor for receiving the tubing 14, the output of which receives a signal on. the second input element AND 38. The output signal of the element And 33 is fed to the inverse input element. ZAPRET 27 and S-input trigger 28 and includes it. The output signal of the trigger 28 through the element OR 32 is fed to the second information input of the two-channel switch 25, the output of which is set to a single signal, including the distributor 8. In addition, the output signal of the trigger 28 is fed to the control input of the single-channel switch 39, which is gQ It cuts the passage of the output signal of the second pressure setting device 26 to the second input of the analog signal switch 22 and further to the control chamber of the analog pressure amplifier 40. Its output is connected to the inlet of the air motor 41 of the pumping station 17. The tubing propeller begins to move at a speed proportional to 30

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national output level of the second pressure setting device 26, which is preset. With a displacement of the propulsion engine with tubing from the initial position, the effect on the sensors of the initial position and reception of tubing, whose outputs are set to zero signals, ceases.

five

0

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installation, resets it and continues to move along a closed trajectory until the arrival of the fist-stop 5 to its original position. Dat5 chik-13 of the starting position of the tubing actuator is activated. Its output signal is fed to the direct input of the BANCH element 27, the output of which turns off the trigger 28. The control signal is removed from the single-channel switch 39. The control chamber of the analog pressure amplifier 40 through the switch 27 of analog signals communicates with the atmosphere. The motor 41 stops 5 seconds, the supply of the pumping station 17 stops, the drive of the tubing drive 7 stops. In addition, the control chamber of the distributor 8 through the two-channel switch 25, element

0 OR 32 and the multi selector switch 30 also communicate with the atmosphere. The valve B, in the neutral position, disconnects the pressure line of the pumping station 17 from the drive of the tubing motor 7. The cycle is completed. The device is ready to receive the next tubing.

If it is necessary to increase the speed of movement of the tubing motor, the operator can interfere with the automatic loading mode, affecting the first pressure setting unit 20. In this case, from its output, the signal arrives at the first input of the switch 22 analog signals. As soon as this signal exceeds the level of the signal generated by the second pressure setting unit 26, it enters the control chamber of the analog pressure amplifier 40 and thus increases the supply of the pumping station 17, and hence the speed of movement of the tubing driver.

The use in this device of sensors of the initial position and the reception and reception of tubing, the second pressure setting unit, two-channel and single-channel switches. Analog Signal Switch Logs45

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And, BAN and Trigger elements allow to provide automatic stacking of tubing, as well as promptly intervene in the control of the cracker in an automatic mode by increasing the speed of movement of the tubing drive, which expands the functionality of the device and provides an improvement in the performance of the cracker.

Claims (1)

Invention Formula A pneumatic control unit of a multi-drive unit containing a console with a multi-position switch, a first pressure unit and a three-position switch, the input of which is connected to the first supply channel, a pneumatic engine of the pump station, three-position four-line distributors, an analog pressure amplifier, the output of which is connected to the air inlet port pumping station, and the entrance is with the second supply channel, hydraulic motors of the actuators, the control unit, consisting the BAN element, the OR element and the comparison element, the comparison element is made with a spring for setting the response level, the outputs of the multi-position switch are connected to the control cameras of the three-position four-line valves, the power inputs of which are connected to the pressure line of the pump station, and the outputs are connected to the inputs of the hydraulic motors of actuators, wherein the first pressure setting device is connected by its output to the input of the comparison element, characterized in that, in order to extend the functional possibilities The device is equipped with a drive for tubing and a control camera connected to one of the outputs of the multi-switch with a three-position four-line distributor. 0 five 0 five 0 five 0 five 0 the outputs of which are connected to the npir inputs of the tubing drive water, as well as the tubing reception sensor and the initial position of the tubing drive sensor, are installed in the control unit, two-channel and single-channel switches, analog signals switch, And element, trigger with separate inputs and a second pressure setpoint the first output of the three-position switch is connected to the first information input of the two-channel switch, the supply channels of the reference element, the second pressure setting device, the BAN element, the trigger, and The initial position of the tubing motor and the tubing reception sensor, and the second output, is connected to the input of a multi-position switch, one of the outputs of which is connected to the first input of the SLI element connected to the second information input of the two-channel switch, the output of which is connected to another three-control four-way control camera. the linear distributor of the actuator of the tubing drive, while the output of the first pressure setting device is connected with the first input of the analog signal switch, the output of the element is equal to connected to the first control input of the two-channel switch, and the output of the initial position of the tubing drive to the second control input of the two-channel switch, the first input of element P and the direct input of the terminator, while the output of the sensor receiving the tubing is connected to the second input of the element I, connected by its output to the inverse input of the BANCH element and the S-input of the trigger, the R-input of which is connected to the output of the BANNER element and the output to the second input of the OR element and the control input of the single-channel switch, Scintillation input of which is connected to the output of the second setpoint pressure output - to a second input of the switch analog signals, and hydraulic motors of the actuators are actuators polushablona rotation and movement of the frame.  cha Ci Editor N.Shvydka Compiled by O. Gudkova Tehred M. Khodanych Order 5761/32 Circulation 640 Subscription VNIIPI USSR State Committee for Inventions and Discoveries 4/5, Moscow, Zh-35, Raushsk nab. 113035 Production and printing company, Uzhgorod, Projecto st., 4 Proofreader M. Khodanych