Double-cylinder force measuring brake caliper
A brake caliper and force measurement technology, which is applied in the field of brake caliper, can solve the problems of large friction resistance of brake cylinder seal ring, measurement data deviation, and not a definite number, etc., and achieve the improvement of friction coefficient accuracy and consistency Effect
Inactive Publication Date: 2015-12-23
JILIN UNIV
View PDF8 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0011] Due to the large frictional resistance of the seal ring of the brake cylinder, the actual positive pressure output by the brake cylinder is not only smaller than the theoretical value, but also not a definite number, resulting in a large deviation in the measurement data
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0035] Below in conjunction with accompanying drawing and specific embodiment the present invention will be described in further detail:
[0036] A double-cylinder force-measuring brake caliper has a fully symmetrical structure, and is mainly composed of two caliper bodies 1, two brake oil cylinders 2, two test piece holders 3, and two force-measuring bolts 4. The forceps body 1 is divided into left and right halves of a symmetrical structure. Replaceable brake oil cylinder 2 is housed on every half, and its plunger diameter can be made into different sizes as required. The friction material to be tested is cut into a sample of a certain size, and the sample is installed on the test piece holder 3, and inserted into the positioning groove 21 of the brake caliper body 1 along with the test piece holder, and the brake cylinder 2 is under the pressure of the brake fluid. Push the test piece against the top and press it on the friction disc 7 to complete the test. The left and r...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a double-cylinder force measuring brake caliper of a holosymmetry structure. The double-cylinder force measuring brake caliper is mainly composed of two caliper bodies (1), two brake oil cylinders (2), two test piece clamps (3) and two force measuring bolts (4). The caliper bodies (1) are divided into a left half and a right half and are of a symmetric structure. Each half caliper body (1) is provided with one replaceable brake oil cylinder (2). A tested friction material is installed on the test piece clamps (3) and inserted into a positioning groove (21) in the brake caliper bodies (1) along with the test piece clamps (3). The left half caliper body and the right half caliper body are assembled into a whole through the two force measuring bolts (4). A strain gauge (14) is attached to each bolt (4) for measuring the positive pressure for clamping the test piece. The brake oil cylinders (2) eject and press the test piece onto a friction disc (7) tightly under the thrust of brake hydraulic force, and a test is completed. According to the brake caliper, the practical test indicates that the brake caliper is used for directly measuring the brake positive pressure, the accuracy of a friction coefficient is improved substantially, and then the consistency of friction coefficient values of other methods is improved.
Description
technical field [0001] The invention belongs to the technical field of friction material testing, and more specifically relates to a brake caliper capable of measuring positive pressure. Background technique [0002] At present, the friction material (brake pad) is tested on the inertia bench and the Krauss testing machine, and the brake calipers that cannot measure the positive pressure are used. The theoretical value of friction positive pressure is calculated by formula (1): [0003] N=P·A-------(1) [0004] In the formula: N --- friction positive pressure [0005] P---hydraulic pressure of the brake cylinder [0006] A---The piston area of the brake cylinder [0007] And the coefficient of friction is obtained by formula (2): [0008] μ=F / N---------(2) [0009] In the formula: μ --- friction coefficient [0010] F --- friction [0011] Due to the large frictional resistance of the seal ring of the brake cylinder, the actual output positive pressure of the brake...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): F16D65/14
Inventor 王鸣歌
Owner JILIN UNIV