Drive unit rotor tunneling shield

 

The invention relates to underground construction and can be used in rotary shields when adjusting the rotation of the rotor. The objective of the invention is to improve the efficiency and reliability of the drive control of the rotor tunneling shield and the expansion of the range of regulation of the speed of rotation of the rotor. Drive unit rotor tunneling shield contains the motors, the node adjusts the rotation speed of the rotor is supplied by a hydraulic pump connected through a valve with hydraulic motors connected to a rotor shaft of the tunneling shield tank working fluid pressure and drain piping. Site adjustment of the rotational speed of the rotor is provided with a block animation containing dispenser, two hydraulic machines, shafts which are rigidly interconnected, and two check valves. The input of the distributor block animation through a discharge pipe connected to the hydraulic pump, one output it through a check valve connected to the distributor node to adjust the speed of rotation of the rotor, and the other output with hydraulic machines. The second check valve connected to the other hydraulic machines, and plum hydraulic machines are connected through a drain pipe to the tank fluid. 2 Il.

Known mechanized shield system for tunnel construction, which has a hydraulic drive with hydraulic motors associated with the shaft of the rotor through a gear transmission, and the hydraulic system of each motor is supplied by a hydraulic pump with manual mechanism for regulating the volume of fluid (RF patent 2018677 in class. E 21 D 9/00 from 30.08.1994 year).

The disadvantage of this device is that the regulation of the rotor speed manual mechanism reduces the efficiency of operation of the actuator rotor tunneling shield.

The closest technical solution of the essential features is the drive unit of the rotor tunneling shield described in UK patent 2.091.316 And CL IPC E 21 D 9/08 from 21.01.1981,

Drive device described in this patent contains motors and node adjust the rotation speed of the rotor is supplied by a hydraulic pump connected through a valve with hydraulic motors connected to a rotor shaft of the tunneling shield tank working fluid pressure and drain pipes.

The disadvantage of this device is the design complexity of the drive astelia in the direction of the face, and the range of adjustment of the rotor speed in this device depends on the magnitude of the axial force of the rotor blades.

The problem to which this invention is directed, is to improve the efficiency and reliability of the drive control of the rotor tunneling shield and extend the range of regulation of the rotor speed.

The problem is solved due to the fact that the drive device of the rotor tunneling shield containing the motors and site adjustment of the rotation speed of the rotor is supplied by a hydraulic pump connected through a valve with hydraulic motors connected to a rotor shaft of the tunneling shield tank working fluid pressure and drain piping, site adjustment of the rotational speed of the rotor is provided with a block animation containing dispenser, two hydraulic machines, shafts which are rigidly interconnected, and two non-return valve, with the inlet of the distributor block animation through a discharge pipe connected to the hydraulic pump, one output it through a check valve connected to the distributor node to adjust the speed of rotation of the rotor, and the other output with hydraulic machines, while the second check valve connected to the other hydraulic machines, and plums the C of the prior art, including searching by the patent and scientific and technical information sources has allowed to establish that the applicant is not detected similar, characterized by signs, identical to all the essential features of the claimed invention, therefore, the claimed invention meets the criterion of "novelty" in the existing legislation.

In Fig.1 presents a General view of the rotary tunneling machine with a drive device.

In Fig.2 shows a schematic hydroscheme node adjust the speed of rotation of the rotor.

Drive unit rotor tunneling machine are accommodated in the housing 1 and contains 2 motors (Fig.1 shows one hydraulic motor) connected via a shaft 3 with the rotor 4 tunneling shield. The node speed is supplied by the hydraulic pump 5, associated with the motor 2 through the valve 6. For the condensation of a working fluid tank is 7. Site adjustment of the rotational speed of the rotor is provided with a unit multiplier 8 containing valve 9, hydraulic machines 10 and 11, the shafts are rigidly interconnected, and two check valves 12 and 13, and the input of the distributor block multiplier 8 through the discharge pipe 14 is connected to the hydraulic pump 5. The output of block multiparity of rotation of the rotor, and another solution with hydraulic machines 10, with the second check valve 13 is connected to another hydraulic machines 11 and plum hydraulic machines 16 is connected through the drain pipe 17 to the tank fluid 7. The hydraulic machines 11 equipped with a pressure regulator 18.

The device operates as follows.

When a drive device in normal mode (the mode in which the regulation of the speed of rotation is adjustable pump 5) working fluid from the pump 5 through the pressure pipe 14 through the valve 9 and the check valve 12 is supplied to the distributor 6 and, further, on the 2 motors. Changing the feed pump 5, to regulate the speed of rotation when the direction of rotation of the rotor change by switching the control valve 6.

In the mode of the animation of the working fluid from the pump 5 through the valve 9 is supplied to the hydraulic machines 10, which operates in the mode of the hydraulic motor, rotates the shaft of the hydraulic machine 11, and the hydraulic machines 11 in the pump delivers the working fluid through the valve 6 to the motor 2. Because the hydraulic machines 11 has a large volume constant than hydraulic machines 10 and they are rigidly connected by a shaft, the amount of working fluid supplied to the motors 2, there will be more and hence uvelichit the volume of constant hydraulic machines 10 and 11. This increase in the coefficient multiplier decreases in proportion to the pressure on the pipe section 15. To increase the pressure in this area to the level of pressure in the pipeline section 14 of hydraulic machines 11 equipped with a pressure regulator 18. In this case, when the pressure on the site of the discharge pipe 15, corresponding to the beginning of the regulation, the controller 18 reduces the coefficient multiplier that increases the air pressure. The controller 18 is, for example, a spring-loaded piston, kinematically associated with the regulatory body fluid machines 11 (on the drawings conventionally not shown).

Thus, the presence of a node adjust the speed of rotation of the rotor unit multiplier can increase the reliability of the control rotor tunneling shield, providing the speed control in a wide ranges, which ultimately helps in soils with different hardness to improve the performance of rotary tunneling machine.

Claims

Drive unit rotor tunneling shield containing motors, the node adjusts the rotation speed of the rotor is supplied by a hydraulic pump connected through the distributor shall Borovoy, characterized in that the node adjust the speed of rotation of the rotor is provided with a block animation containing dispenser, two hydraulic machines, shafts which are rigidly interconnected, and two non-return valve, with the inlet of the distributor block animation through a discharge pipe connected to the hydraulic pump, one output it through a check valve connected to the distributor node to adjust the speed of rotation of the rotor, and the other output with hydraulic machines, while the second check valve connected to the other hydraulic machines, and plum hydraulic machines are connected through a drain pipe to the tank fluid.

 

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