CS261427B1 - Hydraulic multi-disc brake - Google Patents

Abstract

A hydraulic lamellar brake together with a slow-speed hydraulic motor or a high-speed hydraulic motor with a gear creates a hydraulic wheel that can be used to solve mining mechanism drives that must have a small width. Hydraulic disc brake with discs with internal and external grooves pressed against each other by a spring, characterized by the fact that a piston with a seal is placed between the spring and the discs! elements on the outer and inner diameter, while it is sealed with the lamellas by a sealing element. The solution can be used mainly in mobile units of mining machines for ore mining and other similar applications.

Description

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BACKGROUND OF THE INVENTION The present invention relates to a hydraulic] lamella brake for use in mining mechanisms for operating and parking braking of drives. The hydraulic lamella brake is suitable mainly for static and partly for dynamic braking. It is intended to brake the output torque of the hydrocolumn formed by the high-speed or slow-moving hydraulic motor.

Previously known hydraulic lamellar brakes for braking output torques are both weight and structural. For their release, a relatively high braking pressure is required, which requires an additional hydrogenator to be incorporated into the hydraulic circuits. Some constructions are designed so that the hydraulic lamella brake is placed on the rear end of the hydrocolumn. That is to say, a hydraulic motor is placed between the intermediate shaft and the hydraulic lamella brake, the mechanical engagement of the upholsterers with one another by means of an extended groove hub which is part of the hydrobase. Such an arrangement has the risk that, in the case of mechanical failure of the shaft-hub coupling, even if the function of the hydraullic lamella brake does not work to stop the drive shaft at all. The mining mechanisms do not allow such a hydraulic brake arrangement at all.

Dynamic braking in this way is associated with difficulties because the rear part of the hydrocolumn, where the disc brake is driven, is not oil-cooled and the extreme overheating of the braking part occurs. The arrangement of the brake in the rear of the hydrocolumn and the anchor bearings of the drive shaft at the front increases the weight and the stopping length, which is the assembly of the mining limiting mechanisms.

The aforementioned drawbacks are eliminated by a hydraulic lamella brake, wherein the lamellae are internally and externally grooved by the spring, wherein the internally grooved lamellae are slidably coupled to the hydrocolumn outlet shaft, which is coupled to the hydraulic motor by its end grooving. The space between the sand on which the spring and the slats are pressed is sealed so that the action of the pressure oilabole causes the spring to weave on the slats. The plunger is flat, by means of which the slats are pressed into a suitable grooved for the working surface of the piston.

The hydraulic disc brake of the inventive stage achieves very small dimensions, which are suitable for the installation of hydrocarbons of the mining machinery, where the small width is the decisive factor of the machine. The braking torque of the slats is exerted by the spring pressure on the piston, whereby braking is effected by supplying a pressurized oil to the lamella and piston space. In the event of a sudden drop in the pressure oil, the pressure of the piston takes place and the slats are immediately applied to the outlet shaft.

The solution of the hydraulic direct-acting brake of the invention is explained with the aid of the accompanying drawing, which shows a sectional view of a hydraulic vane brake.

The wheel disc is mounted on the shaft 1 driven by a slow-running or through a gear by a high speed hydraulic motor through the shaft spline end. The intermediate grooves 7 are disposed on the central groove of the shaft 1, which is located between the slats 8 with the outer groove which the hub 2 is provided with a sealing element 17 and is firmly screwed with the intermediate piece 4 by means of screws 15 in one unit. The shaft 1 is supported in bearings 11 and 12 which are anchored in hub 2 and intermediate piece 4. The space between the lamellae 7, 8 and the piston 3 is sealed by a seal 18 and 19. A pressure vessel serving to overcome the pressure force of the spring 6 displacing by means of the piston 3 on the lamellas 7 and 8 is introduced into the formed space. and with the other side a piston 3 with a pre-stress which causes the necessary pressure on the lamellae 7 and 8.

BRIEF DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention relates to a hydraulic lamella brake coupled with a slow-running hydraulic motor or a high-speed hydraulic motor to produce hydrocarbon, which can be used to handle mechanisms of mechanisms with extremely small widths. Such areas are mainly the mechanisms for mining activities in ore mines. The solution of propulsion of mining machines, winches, drive of drilling aservis cars, heavy forklifts and other mechanisms, where it is necessary to save the stopped space, necessity of safe braking at the possibility of using the reaction permissible forces in the distance from the located bearings is suitable with the help of hydraulic lamellar brake.

Claims (3)

5 261427 OBJECT A hydraulic lamella brake with lamellae with inner and outer grooves pressed together by a spring, characterized in that a fist (3j with a sealing element (18) on the inner diameter of the hub (2) is placed between the spring (6) and the lamellae (7,8). ) by a sealing element (19) on the inner diameter of the piston (3), the hub (2) being sealed by a sealing element (17) on the outer diameter of the shaft (1). 2. A hydraulic lamella brake according to claim 1, characterized in that the spring (6) is pressed against the intermediate piece (4) and the piston (3), wherein the hub (2) and the intermediate piece (4) are fixed to one another. bolts (15). 3. A hydraulic lamella brake according to claim 1 or 2, characterized in that the lamellae (7, 8) are located between the bearings (11, 12) anchored in the hub (2), in the intermediate piece (4) on the shaft ( 1), wherein the inner grooves (7) are slidably disposed on the inner groove shaft (1), and the lamellae (8) are slidably mounted in the hub (2) with a larger groove. 1 sheet of drawings