RU1808918C - Mining machine bucket - Google Patents

Abstract

Usage: refers to the working bodies of mining, construction and road machinery. SUMMARY OF THE INVENTION machine, includes a bottom, a rear wall on which a moving device is installed in the form of a housing and a linear power impulse. The pulsator has a plunger, a piston with a one-sided rod and a load at its end and a chamber between them. The chambers are connected through a distributor to the pressure and drain lines. The housing is made with a pivotally mounted hydraulic cylinder and a hinge for mounting on the frame of a mining machine. The plunger is configured to have a limited stroke along the longitudinal axis of the bucket. The bucket travel relative to the moving device is greater than the plunger travel relative to the pulsator housing. 3 ill.

Description

ate with

The invention relates to the working bodies of mining, construction and road machines and can be used in soil-grinding machines to ensure the destruction of rocks, and loading and unloading of the bucket.

In the proposed bucket, due to the use of a hydraulic power pulser and axially movable placement of the pulser housing relative to the rotary device, the pulser serves not only to destroy the bottom and load the bucket, but also to unload it through the rear wall, which leads to an increase in productivity and a decrease in dynamism work and simplify the design.

In FIG. 1 shows a soil-digging hearth machine with the proposed bucket; in FIG. 2 is a section A-A-in FIG. 1; in FIG.

3 - hydrokinematic diagram of the proposed bucket.

The soil-supporting hearth machine, in addition to the proposed bucket, includes a caterpillar undercarriage 1, frame 2, a bucket rotator 3 and a conveyor belt 4 with a receiving device 5. The bucket includes a bottom 6 reinforced with teeth. and a sloping rear wall 7 with side protrusions 8 included in the guide grooves of the rotary device 3. connected via the pivot axis 9 and the hydraulic cylinder 10 directly to the frame 2 or the boom arm (not shown) of the machine. An automatic control unit 11 and a hydraulic power pulser are located in the rotary device 3. comprising a housing 12 movable relative to the rotary device 3, in which the plunger 13, the piston 14 with the rod 15 and the load 16 are located.

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The housing 12, the plunger 13 and the piston 14 with the rod 15 form a working chamber 17, common for the plunger 13 and the piston 14, and the rod chamber 18. The control unit 11 includes a two-position tubular spool valve 19, covering with a gap the rod 20, rigidly connected to the load 16 .

Three slots of the distributor 19 of various diametrical sizes form a pressure head 21 and a drain 22 inter-chamber chambers and an end control chamber 23. In the control unit there are a pressure 24 and drain 25 control cavities, and a longitudinal control groove 26 is made on the stem 20. 11 is connected to the working chamber 17 working channels 27.

A pressure accumulator Tcp 29 is included in the high pressure line (to the ju) 28, and a drain accumulator 31 is included in the low pressure line (drain) 30.

The operation of the bucket can be traced according to the diagram shown in Fig. 3. When the fluid is supplied to the high pressure line 28, the distributor 19 occupies the right position, connecting the working chamber 17 to the drain 30 through the working channel 27 and the drain chamber 22 of the distributor 19, and as a result of the liquid pressure in the rod chamber 18 of the piston 14 with the rod 15 and the load. 16 move to the left, displaced fluid from the working chamber 17 to the drain 30. Together with the load 16 moves to the left and connected to the last rod 20, as a result of which the control groove 26 enters the pressure cavity 24 and connects the control chamber 23 of the distributor 19 with a pressure 28. This leads to the movement of the distributor 19 to the left position and the connection of the working chamber 17 with the pressure 28, as a result of which the piston 14 with the rod 15 and the load 16 first move to the left with a large negative acceleration, and after stopping they accelerate to the right, this plunger presses on to VSH with a relatively large operating force, causing the bucket be embedded into the face, i.e., the impulse travel is made. With further movement to the right, the control groove 26 enters the drain control cavity 25 and connects the control chamber 23 of the distributor to the slip 30, as a result of which the distributor 19 occupies the right position and connects the working chamber 17 to the drain 30, and the idler of the impulse starts , i.e. the movement of the piston 14 with the rod 15 and the load 16 to the right with slight negative acceleration due to the pressure of the liquid on the piston 14 and the rod chamber 18, and after stopping, the movement to the left, after

whereby the control groove 26 enters the pressure cavity 24, and the distributor 19 moves to the right position. After this, a new stroke of the impulser begins, i.e. the duty cycle is repeated.

As a result of the working strokes, the plunger 13 promotes the introduction of the bucket into the bottom and loading the bucket with rock mass. After the bucket is loaded with rock mass,

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the operator stops feeding the machine to the bottom, and with the help of the hydraulic cylinder 10 lifts it up, turning the bucket around the pivot axis 9 and putting it into position to unload the rock mass through the rear

5, wall 7 into the receiving device 5 of the reloading conveyor 4. The pulsator continues to work at this time, and due to the bucket being raised, the plunger 13 quickly takes its leftmost position under the influence of the impulse stroke, and rests against the pulser housing 12, and then during the stroke the plunger 13 together with the bucket and the housing 12 with a relatively large acceleration moves to the left relative

5 rock mass. When the impulse is idle, the plunger 13, bucket and casing 12 of the impulse move to the right under the action of the pressure of the Liquid on the housing 12 im-. pulsator in the stock chamber 18, i.e. with

0 with a relatively small acceleration, as a result of which the furnace mass, under the influence of friction force on the bottom and the bucket wall, also moves to the right to the device 5. To unload the bucket with a hydraulic cylinder

5, they lower it into the working position and turn on the machine to the bottom, as a result of which a new cycle of loading the bucket with the rock mass begins, with the plunger 13 being moved to the right position relative to the housing 12 of the pulser under the action of the supplying force of the machine, and the latter under pressure fluid in the idle chamber 18 is in the extreme right position relative to

5 bucket swivel 3.

Thus, the power pulser installed in the rotary device 3, provides destruction of the face, loading the rock mass into the bucket and unloading the bucket,

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Claims (1)

SUMMARY OF THE INVENTION A bucket of a mining machine including a bottom and a rear wall on which a moving device is mounted in the form of 5 of the housing and the linear power impulse made of a plunger connected to the rear wall, a piston with a one-sided rod and a load at its end and chambers between them, connected through a distributor with a discharge and drain lines, characterized in that, in order to increase productivity and to simplify the design by using a power impulse not only to destroy the bottom, but also to transport the destroyed rock mass to the transfer conveyor, the housing of the transfer device is pivotally fixed nnym cylinder rotation and for securing the hinge to the frame mining machine-us, the plunger configured to move along a limited longitudinal axis of the bucket, and the bucket relative stroke movement apparatus relatively longer plunger stroke impulsatora housing.