SU907262A1 - Header working member - Google Patents

Description

(54) EXECUTIVE BODY

one

The invention relates to the mining industry, more specifically to the executive bodies of combines for mining operations.

The executive body of the tunnel miner is known, including a housing mounted on a shaft, a floor, and free-wheel disk cones with supports. To redistribute the transverse loads between the individual cones on the shaft, a disk is installed that can rotate in contact with the cones 1.

However, this actuator is less sensitive to the heterogeneity of the rocks being destroyed, and due to the location of the cutting edges of all its cones in the same plane, initial incision into the massif is difficult.

Closest to the proposed technical essence and the achieved effect is the executive body of the heading machine, including a boom with a turning mechanism and a faceplate with disc cones, which is associated with the drive shaft 2.

COMBINE

The disadvantages of this executive body are the increased noise, vibration and dust generation due to the friction of the cones of the cones outside the line d. low, i.e., not destroying the breed at the moment.

The purpose of the invention is to eliminate the friction of the cutters about the face outside the cutting line.

The goal is achieved by the fact that the executive body is provided with a sleeve with intersecting axes of the outer and inner surfaces, which is mounted rotatably on the boom, and on the outer surface of the sleeve is placed with the possibility of rotation of the faceplate, while the sleeve is fixedly fixed on the arrow by a controlled stop when the boom rotates, and a faceplate is mounted so that it can be fixed to the hub by means of a controlled 20 stop when the direction of boom rotation changes.

Claims (3)

The stopper is made in the form of a hydraulic mechanism connected by hydrolines to the hydraulic system of the boom swing mechanism. The washer is connected to the drive shaft by means of a gear coupling, in which the greatest tilt angle is equal to the angle between the axes of the inner and outer surfaces of the sleeve, and the point of intersection of these axes is aligned with the center of the coupling. FIG. 1 shows a small longitudinal section along the axis of the executive body; in fig. 2 is a section A-A in FIG. 1. The actuator has an arrow 1 on which the sleeve 2 is fitted with the possibility of rotation with the external and internal axes intersecting at an angle ot. On the outer surface of the hub 2, a planaiba 3 is installed on bearings with roller cone 4 and 5 rotating in bearing supports 6 and 7. In the boom 1, a drive shaft 8 with a serrated naught coupling 9 fixed in its end is mounted on the bearings. In the sleeve 2 there is a cavity 11 in which a stopper 12 and a spring 13 are installed. The stopper has an inclined surface 14. The cavity 11 on the outside has an opening 15 in which a ball 16 is placed. An intermediate sleeve 17 is placed between the sleeve 2 and the faceplate 3 and connected to with a bolt 18. on the inner surface of the sleeve 17 is made by the pro; 1irovna surface 19, and in the boom 1 - the cavities 20 and 21, lying at the ends of the same diameter. Plates 22 and 23 and balls 24 and 25, respectively, are placed in these cavities. The mechanism of rotation of the boom 1 of the executive organ is a hydraulic distributor 28 (hydraulic circuit pack pressure). The cavities 20 and 21 are connected to the hydraulic cylinders 26 and 27, respectively (hydraulic stopper control mechanism). The executive body of the tunneling machine works as follows. From the drive shaft 8, through the coupling half 9 and the gear rim 10, the faceplate 3 is rotated. At the same time, the working fluid from the hydraulic distributors 28 enters the piston cavity of the hydraulic cylinder 26 and into the cavity 20. As a result, the cylinder 26 stretches. Turn the boom 1 to the left, and the piston 22 will move the valve 22 into the cavity 11 and the stopper 12 will compress the spring 13. At the same time, it is downpriepxHocTb 14, the stopper will move away from the ball I) and) remove the sleeve 2 from the faceplate 3. At the same time, the ball 24 stops the sleeve 2 ii: i cTjXMe 1. In this state, faceplate 1.pl: wear on the bearings. I) | PG1 with this roller cone 4, its 1 a1 ct in support 6, cleaves the layer: u):., IЫ. At the same time, the roller cutter 5, making pergei and. the movement on the faceplate 3 does not concern the bottom. Thus, sharbshka 4 goes beyond the cutting line, loses contact with the face. All the cones on the rotating faceplate due to its inclination, alternately passing to the cutting line, move away from the bottom. When the working stroke of the executive body to the left is completed, the turning mechanism is switched to the right. For this purpose, the distributor 28 directs the working fluid to the cylinder 27 and the cavity 21. The piston 23 presses the ball 25 against the end face of the sleeve 2. At the same time, the floor 20 is opened to the drain. The spring 13, displacing the working fluid from the cavity 20, moves the stopper 12 through the cavity 11. At the same time, the inclined surface 14 pushes the ball 16 out of the cavity 11 into the hole 15 and presses against the profiled surface 19 of the intermediate sleeve 17. As a result, the sleeve 2 and the faceplate 3, through the connected sleeve 2 and the faceplate 3, through the intermediate sleeve 17 connected with it by the pin 18, are mutually locked. Since faceplate 3 rotates from the drive shaft 8, it carries sleeve 2 behind it. This sleeve turns to match the cavities 21 and 11, i.e., 180 °. At the same time, the ball 25 pressed by the piston 23, overcoming the resistance of the spring 13, moves the stopper 12 and simultaneously stops the sleeve 2 on the boom. The inclined surface 14 of this stopper ceases to press the ball 16 to the sleeve 17. Thus, the faceplate 3 and the sleeve 2 mutually dissolve the vehicle. The faceplate rotates on the hub 2. At the same time, the roller cutter 5 cuts the rock, and the 1 pin 4 does not touch the face. The proposed executive body of the tunnel miner will reduce vibration and dust formation at the bottom of the tunnel miner. The wear of the ball pitch will also be reduced. This is due to a change in the position of the cone with the cones relative to the boom of the actuator. Moreover, it is an izmeneniye when changing the movement of the boom is carried out automatically. Claim 1. The executive body of the heading machine, including the mounted on (Strela plate with disc sharoshka.mi connected to the drive shaft, and the boom swing mechanism containing a hydraulic control system, characterized in that, in order to eliminate the friction of the cones about the face outside the line cutting, it is provided with a sleeve with intersecting axes of the external and internal surfaces, which is mounted rotatably on the boom, and on the external surface of the sleeve is stirred so that it rotates faceplate, with the sleeve installed with the possibility of fixing But the boom by means of a controlled stop when the boom is working, and the faceplate is installed with the possibility of fixing on the sleeve by means of a controlled stop when the direction of rotation of the boom is changed. 2. An executive unit according to Claim 1, characterized in that the stopper is made in the form of a hydraulic mechanism connected by hydraulic lines to the hydraulic system of the boom swing mechanism. 3. The executive authority of claim 1, wherein the face plate is connected to the drive shaft by means of a gear coupling, in which the largest skew angle is equal to the angle between the axes of the inner and outer surfaces of the sleeve, and the intersection point of these axes is combined with the center of the coupling. Sources of information taken into account in the examination 1. USSR author's certificate Afo 424973, cl. E 21 C 27/24, 1972. 2. USSR author's certificate No. 312939, cl. E 21 C 27/24, 1969 (prototype). / 7 13 FIG. 2