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A service disc brake for a heavy vehicle

A technology for disc brakes and heavy-duty vehicles, applied in the direction of brake types, axial brakes, brake components, etc., to solve problems such as increasing vibration and noise

Inactive Publication Date: 2008-12-17
VOLVO LASTVAGNAR AB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Vibration noise can be increased by wear or improper dimensional tolerance distribution between brake disc and support elements

Method used

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  • A service disc brake for a heavy vehicle
  • A service disc brake for a heavy vehicle

Examples

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Embodiment Construction

[0015] Fig. 1 shows a servo disc brake 1 according to the present invention. Such a servo brake is used to decelerate the vehicle during normal operation of the vehicle, that is, to decelerate the vehicle while the vehicle is running. By using servo brakes, the vehicle speed can be reduced. Preferably, the servo brake is provided on one or more wheels of the vehicle in order to brake the vehicle. The servo disc brake 1 includes a brake disc 2 which is arranged to rotate relative to a brake caliper 3, and the brake caliper 3 is provided with a first brake block 4 and a second brake block 5. The first brake block and the second brake block are 4 and 5 respectively, which are arranged on two opposite sides of the brake disc to contact the brake disc and thus brake the rotation of the brake disc. The first movable piston 6 and the second movable piston 7 are arranged in the caliper 3 to act on the first brake block 4 and the second brake block 5 respectively, causing the pads 4 and 5 ...

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Abstract

A service disc brake (1) for a heavy vehicle, which brake comprises a brake disc (2), a first brake pad (4) and a second brake pad (5) arranged on opposite sides of the brake disc (2), and a first displaceable piston (6) and a second displaceable piston (7) which are arranged to act on the first brake pad (4) and the second brake pad (5), respectively, and an actuator (12) for braking the brake disc (2). The disc brake comprises a third displaceable piston (9), the second piston (7) and the third piston (9) being connected to each other via a closed space (10) containing a hydraulic fluid. The braking actuator (12) being arranged to act on the first piston (6) and the third piston (9) for displacement of the first piston (6) towards the brake disc (2) and for displacement of the third piston (9) so as to displace the second piston (7) towards the brake disc (2) by means of the hydraulic fluid in the closed space (10).

Description

Technical field [0001] The present invention relates to a servo disc brake for heavy vehicles according to the preamble of claim 1. [0002] The present invention can be applied to different types of vehicles. Although the present invention is mainly described with respect to trucks, for example, the servo disc brakes according to the present invention can also be used in other heavy vehicles, such as buses, wheel loaders, articulated trucks, and excavators. Background technique [0003] In disc brakes for trucks with inner and outer brake pads, it is desirable to obtain a uniform clamping force distribution on the inner and outer pads, and there is a working gap between the pads and the brake disc. When the braking force is eliminated and the brake disc is not braked, in order to prevent the pad from dragging and leaning on the brake disc, there must be a certain amount of axial clearance between the pad and the brake disc. In addition, there must be working clearance on both si...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D65/14F16D55/2255
CPCF16D65/18F16D65/567F16D2121/02F16D2121/14F16D2123/00F16D2125/32F16D55/2255
Inventor 奥弗·约翰逊
Owner VOLVO LASTVAGNAR AB