SU1527042A1 - Control unit of tractor pneumatic brake system - Google Patents

Abstract

This invention relates to automotive engineering, in particular to pneumatic brake systems of tractors. The purpose of the invention is to increase the convenience of operation. In the two windows of the upper part 14 of the pedal 12 and above it are located sliders 21 rigidly connected to the rods 26 of the spring-loaded pistons 22 located in the two extreme windows of the lower part 15 of the pedal 12. In the middle window of the lower part 15 of the pedal 12 there is an additional spring-loaded piston contacting with the rods of the working section for controlling the trailer brakes, and the slide of the additional piston rigidly connected to its rod is freely located under the pedal 12 on the stops of the rods 26. 2 Il.

Description

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FIG.

The invention relates to a transport engineering, in particular to pneumatic brake systems of tractors.

The purpose of the invention is to increase the convenience of operation.

FIG. 1 shows a side view control unit; in fig. 2 is a schematic diagram of the control node.

In the case 1 of the brake crane, there are working follower sections 2 and 3, respectively, controlling the brakes of the tractor and the trailer. The inputs of sections 2 and 3 communicate with the receiver 4 of the tractor. The output of section 2 communicates with the inputs of spring-loaded valves 5 and 6. The output of valve 5 communicates with the brake chamber 7 of the left rear wheel, and the output of valve 6 with the brake chamber 8 of the right rear wheel of the tractor. The output of section 3 communicates with the control line 9 of the trailer brakes through the coupling head 10. Section 2 and 3 and the spring-loaded valve 5 and 6 are actuated by the rods 11 from the pedal 12, which is mounted on the hinge 13. The pedal 12 consists of the upper 14 and lower 15 parts. In the upper part 14, windows 16 and 17 are made, and in the lower part 15, windows 18-20 are made.

In the windows 16 and 17 of the upper part 14 of the pedal 12 and above it are sliders 21 with a grooved surface. The slide blocks 21 are rigidly connected with the rods of the two spring-loaded pistons 22, which are in contact with the rods 11 of the spring-loaded valves 5 and 6. The pistons 22 are located in the two outermost windows 18 and 20. The spring-loaded piston 23 is located in the middle window 19 and contacts the rod 11 of the working section 3. Slider 24 piston 23, rigidly connected with its rod, is freely located under the pedal 12 on the stops 25 of the rods 26 of the spring-loaded pistons 22. Rec.ver 4 communicates with the supply line 27 through the connecting head 28.

The control node operates as follows.

In the disinhibited state of the tractor and the trailer, the pedal 12 is depressed. Brake chambers 7 and 8, as well as line 9, communicate with the atmosphere through sections 2 and 3 and valves 5 and 6.

In the event of a deceleration of the tractor and trailer, press pedal 12.

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At the same time, the pistons 22 and 23 press on the rods 11 of the following section 3 and valves 5 and 6, and the pedal 12 itself with its lower part 15 - on the next section 2. Then the brake chambers 7 and 8 communicate with the receiver 4, as well as the trunk 9 trailer brake control.

In the case of a sharp turn of the tractor with only one side of the tractor being braked, the tractor driver moves one of the sliders 21 and presses pedal 12. At the same time, the spring-loaded piston 23 and one of the pistons 22 open windows 19.18 or 20. Only the next section 2 and one of the valves 5 or 6, since the stem of section 3 and the plugs of the other valve 6 or 5 freely pass through the opened pedal windows 12 "Compressed air is only supplied to one brake chamber (7 or 8).

Claims (1)

Formula Invention A tractor pneumatic brake control unit, containing a brake valve, in the case of which are located the tractor and trailer brake control sections and spring-loaded valves for connecting the tractor brake control section to the corresponding side brake chambers, and a pedal for acting on the sections of the sections and spring-loaded valves mounted on the hinge the support, wherein the pedals are made through the windows, characterized in that, in order to increase the convenience of operation, two o The pedal is equipped with sliders installed in the upper windows and protruding above the pedal, and spring-loaded cams, two of which are installed in the outer windows above the stems of the spring-loaded valves and rigidly connected to the sliders located above the pedal, and one A spring-loaded cam is located in the middle lower window of the pedal above the stem of the trailer brake control section and is connected to a slider placed under the pedal on the stop made on the legs of two other spring-loaded cams. 12 Editor A Shandor Compiled by S. Makarov Tehred L. Oliynyk Proofreaders. King Order 7460/23 Circulation 522 VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, Raushsk nab. 4/5 21 W 1C 25 11 26 2. Subscription