SU968400A1 - Machine for working rock by caving-in method - Google Patents

Description

The invention relates to the mining industry, and more specifically to earth-moving machines.

A device for developing soft rocks by the method of collapse is known, which includes a self-propelled trolley, a platform with a rope suspension, a working body and stabilizing brackets fl ..

However, a two-gang suspension and stabilizing brackets of the platform do not provide accuracy when holding the machine in a given direction due to uneven winding of channels onto the drum. The latter is due to various changes in rope lengths and winding diameters due to their stretching and contamination.

A machine for developing rocks is also known, which includes a self-propelled trolley, a platform with a cable suspension / implement and a sensor for positioning the cable suspension block 2.

The disadvantage of the machine is the low accuracy of providing directional movement of the working body, especially when there are significant jolts on it during the period when the working body enters the face and when overcoming solid inclusions. This is so.

that the movement of the α-block of the cable suspension of the platform is carried out when the hydraulic cylinder is moved apart along an arc of a circle with a radius equal to the length of the corm of the arm. Such a trajectory causes the work of the hydraulic cylinder to move the platform relative to the cable suspension in the longitudinal direction. At small increments

10, the force of resistance to the translational movement of the working body in the process of cutting the ledge, this work is insignificant and has little effect on the process of stabilizing the position of the working body on the face. When significant increments of the resistance force, the performance of work on the additional movement of the platform due to the final power of the hydrocylinder leads to a slowdown

20, the process of restoring the platform to its original position reduces the efficiency of the stabilization unit. As a result, the performance of the machine decreases.

The purpose of the invention is to increase the productivity by improving the stabilization of the position of the working member.

The goal is achieved by the fact that the machine for the development of rocks by the method of breaking, including a self-propelled car

Claims (2)

30, a platform with guides, a cable suspension with a block, a working body and a sensor for positioning the cable suspension block are provided with a carriage mounted for movement by means of a drive along the platform guides and a cable suspension articulated to the block, having a sensor The position of the cable suspension unit is made in the form of, fixed on the carriage of the switches of the carriage drive, installed with the possibility of interaction with the ski of the unit of the rope. FIG. 1 shows the machine side view; in fig. 2 is a view A of FIG. one; in fig. 3 - electric drive circuit. The machine includes a self-propelled trolley 1, located on the ledge roof, which is connected by means of a cable suspension 2 and block 3, hinged on the carriage 4, p. platform 5, having a working body The carriage 4 is mounted on platform 5 with the ability to move using rollers 7 and 8 along the guides 9 and 10 and pivotally attached to the block 3-cable suspension 2. Drive screw 11 is on one side in engagement with the running nut 12 attached to the carriage 4, the ac is connected via a gearbox 13 to the electric motor 14. On the carriage 4, there are mounted switches 15 and 16 that interact with the ski 17 of the unit 3 and are included in the power supply circuits of the magnetic actuators 18 and 19 controlling the operation of the electric motor 14. mash on operates as follows When undercut ledge platform 5 mounted thereon with the working body Used With winch propelled carriage 1 and the cable 2 suspension re meschaets -otkosu ledge on to its upper edge ,. working out in the ledge of the slit A cantilever working body 6 is acted upon by resistance forces directed against the movement. They create a torque that turns the machine in plan and takes the tool out of the slot. In order to create a compensating torque, the carriage 4 with the cable carriage 3 under the weight 2 automatically moves relative to the center of gravity of the platform 5. As soon as platform 5 begins to turn-in, for example, clockwise, the limit switch 15 presses its lever on the blade 17 unit 3, the axis of which maintains the direction of the axis of the cable suspension 2, and closes the electrical supply circuit of the magnetic actuator 18, which; turns on the electric motor vl 14. The rotation of the shaft of the electric motor 14 is transmitted through the gearbox 13 to the driving screw 11, as a result of which the drive nut 12 and attached to the кар carriage 4 are moved to the right so that the new position of the block 3 pivotally attached to the carriage 4, relative to the center The rigging of the platform 5 ensures the occurrence of a counter-clockwise compensating torque. In this case, the platform 5 restores the original direction, the limit switches 15 moves away from the ski 17 of the block 3, and the lever of the limit switch 15 returns to the initial position. The magnetic starter 18, the loss of power, turns off the motor 14 from the network. The drive screw 11 stops: and the carriage rotates, and the carriage 4 .. stops. .g With the reduction of the forces of resistance to the movement of the working body b when the unit 3 is in position, providing the specified direction of the working body b to the smallest, platform 5 begins to unfold in plan against the hour. arrows. The limit switch 16 includes a magnetic starter 19, which connects the motor to the network. 14 with reverse phase rotation. The carriage 4 with the block 3 pivotally attached to the non.y is moved to the left to the new position of the block 3 of the cable suspension 2, in which the unwinding and compensating moments are equal. Platform 5 restores the original direction and carriage 4 stops. The application of the invention provides a high accuracy and rapid stabilization of the directional movement of the working body, both at low increments of the resistance force to its translational movement and at large, the high efficiency of the carriage drive. This contributes to improving the performance of the machine in the development of rocks by the method of collapse. The invention The machine for the development of rocks by the method of breaking, including a self-propelled carriage, a platform with guides, a cable suspension with a block, a working body and a position sensor of the cable suspension block, o. In order to increase productivity by improving the stabilization of the position of the working body, it is equipped with a carriage that is installed with the possibility of movement by means of a drive along the guides of the plate and hingedly connected to the cable suspension unit having a ski the block of the cable suspension is made in the form of carriage drive switches mounted on the cage, us59684006 Tavovskiyakh with the possibility of interaction- 1. USSR inventor's certificate from the block of cable suspension units. 305265, class E 21 C 39/00, 1966. Information sources, according to application number 2763874 / 22-03, taken into account in the examination of cl. E 21 s 39/00, 1979 (prototype). Sh 2. USSR author's certificate Fie. V .. / S, f "- l. T 1 y sixteen i