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Test device for road friction coefficients
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A technology of road friction coefficient and test device, which is applied in the direction of measuring device, mechanical device, instrument, etc., can solve the problems of closed traffic and poor repeatability of test results.
Inactive Publication Date: 2011-11-09
CHANGAN UNIV
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Abstract
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Problems solved by technology
However, the difference between the tester and the actual driving state is too large, the operation process is also greatly affected by human factors, and the repeatability of the test results is poor.
And for the fixed-point measurement, the on-site test needs to close the traffic, and there are big problems in terms of economy and safety.
Method used
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Embodiment 1
[0026] exist Figure 1~4 , 6, the road surface friction coefficient testing device of the present embodiment is made of front wheel 1, rear axle 2, speed sensor 3, handrail bearing seat 4, recording control switch 5, rear sprocket wheel 6, chain 7, front sprocket wheel 8, insurance Bar 9, tension mechanism 10, instrument box 11, frame 12, armrest assembly 13, base plate 14, rear bearing seat 15, rear wheel 16, column 17, front sprocket positioning mechanism 18, front axle positioning mechanism 19, front Bearing housing 20, front axle 21, conductive slip ring 22, bearing cover 23, torque sensor 24, limit plate 25, limit block 26 are connected to form.
[0027] Two rear bearing blocks 15, frame 12 and limit block 26 are installed on base plate 14 with threaded fastening connector fixed connection, rear axle 2 is installed on the rear bearing seat 15, and the outer surface of rear axle 2 is processed with Groove a, groove b, and groove c arranged on a straight line in the axial ...
Embodiment 2
[0043] In Embodiment 1, the front sprocket 8 is replaced with a front pulley, the rear sprocket 6 is replaced with a rear pulley, and the chain 7 is replaced with a belt. Other components and the coupling relationship of the components are the same as in Embodiment 1.
Embodiment 3
[0045] The rear sprocket 6 of the present embodiment is: the sprocket body 6-6 arranged on the rear axle 2 is integrated with two sprockets 6-1 with different numbers of teeth, and other parts and parts of the rear sprocket 6 The linking relationship is the same as in Example 1. Other components and the coupling relationship of the components are the same as in Embodiment 1.
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Abstract
A test device for road friction coefficients is disclosed in the invention; two rear bearing saddles, a frame and a limit block are provided on a base plate, the rear bearing saddle is provided with a rear axis, two ends of which are provided with rear wheels, the middle part of which is provided with a speed sensor, a handrail bearing saddle and a rear chain wheel or a rear belt pulley, the handrail bearing saddle is provided with a limit plate and a handrail assembly equipped with a record control switch, the frame is provided with instrument containers of a dynamic strain indicator and a paperless recording instrument, the paperless recording instrument is connected with the speed sensor, the record control switch and the dynamic strain indicator, the front end of the frame is provided with a vertical post of a bumper, a tensioning mechanism is arranged between the post and the frame, the lower end of the vertical post is provided with a front bearing saddle of a front axis, the front bearing saddle is provided with a front axis positioning mechanism and a bearing cover equipped with a conductive slip ring, the right end of the front axis is provided with a front wheel, the middle part of the front axis is provided with a front chain wheel or a front belt pulley and a torque sensor connected with the dynamic strain indicator, the front chain wheel is linked with the rear chain wheel via a chain or the front belt pulley is linked with the rear belt pulley via a belt, the front chain wheel is provided with a front chain wheel positioning mechanism.
Description
technical field [0001] The invention belongs to the technical field of paving and repairing machines, tools or auxiliary equipment for pavement of roads or other similar structures, and in particular relates to a road surface friction coefficient testing device. Background technique [0002] In order to accurately evaluate the anti-skid performance of the road surface, different countries have developed a series of friction coefficient test methods according to the characteristics of each country. Whether the various test methods can accurately reflect the actual friction performance between the vehicle tire and the road surface, and is economical to be widely used And practicability, still needs to carry on the experiment to compare. [0003] At present, the test instruments for pavement friction coefficient are mainly divided into two categories: on-site test instruments and indoor friction coefficient test instruments. On-site testing instruments generally include a late...
Claims
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Application Information
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