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Translational shoe-hub type brake

A technology of hub brakes and brakes, which is applied in the direction of drum brakes, brake types, brake parts, etc., can solve the problems of unequal positive pressure and friction, unequal displacement of brake shoes, and decreased bearing capacity, etc., to achieve positive The same pressure and friction force, higher load capacity and lower manufacturing cost

Inactive Publication Date: 2010-07-21
SHANDONG UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such a movement mode causes the disadvantages of unequal displacement of each point of the brake shoe, unequal normal pressure and friction force, and uneven wear.
In addition, the non-circular hinge hole of the plane-moving brake shoe also makes the brake shoe and the brake pin in line contact, the contact stress is obviously increased, and the bearing capacity is greatly reduced.

Method used

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  • Translational shoe-hub type brake
  • Translational shoe-hub type brake

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] figure 1 The structure of the translational shoe-hub brake shown is: it is composed of a brake back plate 4, a wheel hub 1, a brake shoe 5, a crank 3, and a return spring 2, and the two ends of the brake back plate 4 pass through cylindrical pins and two The cranks 3 are hinged, and the two ends of the two cranks 3 are respectively connected with the two ends of the two brake shoes 5 through cylindrical pins, forming a double parallelogram mechanism. After the crank 3 and the brake cylinder of the vehicle or the piston rod (not shown) of the oil cylinder are hinged, under the action of the brake cylinder or the oil cylinder, the two equal-length cranks 3 rotate to drive the two brake shoes 5 (equivalent to the connecting rod ) translationally moving outward to extrude the hub 1 to generate positive pressure and frictional force to achieve the purpose of braking.

[0013] In order to reduce the friction force of each hinge point, each hinge point is equipped with a corr...

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Abstract

The invention discloses a transitional shoe-hub type brake, which comprises the components such as a brake back plate, a hub, brake shoes, cranks, a return spring and the like, and is characterized in that two ends of the brake back plate are articulated with two equal-length cranks through cylindrical pins, and two ends of the two cranks are articulated with two ends of the two brake shoes respectively through the cylindrical pins to form a double-parallelogram mechanism. The transitional shoe-hub type brake overcomes the defects that the existing shoe-hub type brake has an unreasonable movement mode, uneven wearing capacity, low bearing capacity caused by high auxiliary connections, and high manufacturing cost, and is a novel transitional shoe-hub type brake with excellent performance and a compact structure.

Description

technical field [0001] The present invention relates to brakes, and more particularly to shoe-hub brakes. Background technique [0002] At present, most of the brake shoes of the shoe-hub brakes used in vehicles rotate around the axis. plane movement. Such a movement mode causes disadvantages such as unequal displacement of each point of the brake shoe, unequal normal pressure and friction force, uneven wear and the like. In addition, the non-circular hinge hole of the plane-moving brake shoe also makes the brake shoe and the brake pin in line contact, the contact stress is obviously increased, and the bearing capacity is greatly reduced. The above-mentioned shortcomings affect the load-carrying capacity, braking efficiency and service life of the brake. To overcome these shortcomings, the key is to realize the translational motion of the brake shoe with a low pair mechanism. Contents of the invention [0003] In order to overcome the above-mentioned shortcomings of the...

Claims

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Application Information

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IPC IPC(8): F16D51/18F16D65/06
Inventor 崔希海张风太李进兰张观会
Owner SHANDONG UNIV OF SCI & TECH
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