SU110914A1 - Drum brake - Google Patents

Description

Hydraulically operated brake calipers with floating blocks are known.

However, in the system of known floating brake pads, automatic clearance adjustment devices are not applicable.

(The written invention is free from the stated drawback and is characterized in that the upper ends interact with two located in a common cylinder connected to the high pressure pipeline, and the lower ends of the pad interact from two separate cylinders connected to the iibicoK pipeline (; ro pressure through a hydraulic regulator, which is made in the form of a hydraulic cylinder, equipped with a cuff whose piston on the side of the high pressure pipeline of the brake system is loaded with a spring, and On the cylinder side of the cylinder, this pipeline has a protrusion of DI1 inside the cylinder. A stop for the piston.

In order to simplify;

isosteiie allows modification, zach.pochayushees that the lower KG pads interconnect with the pistons located in the cylinder, the cavity between which is connected through a hydraulic and high reading piping through the hydraulic regulator.

On flash Figure 1 shows a block brake diagram with separate cylinders and pistons interacting with the lower ends of the coaxial box; pas figs. 2 is a diagram of the same mechanism with pistons interacting with the late ends of the pads and rational in the cylinder.

The two floating sleeves / rest with their upper ends on the pistons 2 of the wheel-mounted hydraulic cylinder. and on the stop 4. The lower ends of the pads rest on the pistons 5 of the adjusting device, which has a cylinder 6.

The adjusting device is connected to the high pressure pipeline of the brake system with the help of a regulator, consisting of a body 7 of the piston 8, a spring: I1Pz1 9, a matszheta 10 and an emphasis / U. Pin 12 and 13 are designed for such a pressure so that the pistons J can start the movement of the carcass; pistons 2.

The work of the braking .iexaii i: iM; i is used as follows;

In the ottormozhemnom condition TOII, the brake pads are equipped with the force of springs 12 and 13, which surpasses the residual pressure in cylinders 3 and 6. The piston 8 of the regulator is located at the rightmost position.

At the beginning of the alternating brake of the ped; and 1, the piston 8 of the regulator is in the extreme disposition of the injector. At the beginning of the cycle, the brake ps-dop nopHjeHb 8 of the regulator of the torus moves in-to-n and takes the positivy shown by the iia diagrams. As the piston pedal alternates with the brake, the piston 8 will retract backwards, and the pressure of the brake fluid will be overcome by the sys. Of the springs 12 and 13.

After the brake fluid pressure becomes lower than the force of the spring 12, the pistons 5 begin to disperse, stretching the spring until the lower ends of the brake pads are in firm contact with the brake drum, after which the increased pressure in the spindle will overcome the tension of the spring 13, followed by the normal 2 they press the upper ends of the pads against the drum, which will cause the pads to move along the frame of the drum drum until the rear hitch of the pulley contacts with the support 4.

Pr1- otmormazhniiii siachala under the influence of Gruzhni1p-1y 13 piston1 2 15retc is the initial position, then under the action of the tool 12 will fall into place and the pistons / 7 of the lower ends of the brake pads.

As far as the operation of the junction of the crankshaft is triggered into the space bounded by the pistons 5 and the norm 8, through the cuff 10 to the interval of predetermined voltage forces, the springs 12 li 13 some |); e the amount of liquid will go over the braking system .

This fluid will remain in this space, due to the design of the regulator, allowing the fluid to move only in the direction away from the main pi.chindra. This automatically adjusts the clearance. brake p1 linings and brake drum.

Subject and reference of the clause

Claims (3)

1.Brake brake .iexan. M e gdravlisticheski m prN1K) dol1 p i, 1 vayuyn p.mi pads, except for the HI, and also with the fact that, with the effectiveness of the action, the upper ends Co-operation with two pistons, located in a common cylinder, connects to the high-pressure pipeline, and ends from the two pads interact with the two separate cylinders connected to the high-flow pipeline: hydraulic regulator. 2. The mode of operation of the brake mechanism of p. 1, concerning the fact that, in order to automatically ensure a thick gap between the pads and brake drums, regardless of the wear of the pads, the hydraulic regulator is executed in the form of hydraulic A cylinder equipped with a cuff whose piston on the side of the high pressure pipeline of the brake system is loaded with a spring, and the cover of the cylinder on the side of the OTISO side of the pipeline has inside the cylinder of the cylinder. PORNNYA. 3. Video change of the inhibitory mechanism according to claim 1, dated 1 and 2; This is due to the fact that, for the purpose of controlling the KOHLT operation, the lower part of the co.dactors interact with two generalized chi, 1 npdr) 10 hrs, the total volume of which is through the hydraulic regulator of the high pressure pipeline.