CN202002875U - Direct reading type friction factor test instrument - Google Patents

Abstract

The direct-reading friction coefficient tester is a static experiment device, especially a test device that directly reads out the friction coefficient of the surface friction of an object; it includes three parts: test, reading and frame; it consists of a level, a test plate, a plate connecting frame, Test piece, traction rope, goniometer, pointer connecting rod, linkage pin, first swing rod, upper connecting rod, second swing rod, hinge pin, pulley frame, pulley, pulley frame adjusting screw, inclination adjuster, inclination adjustment The output shaft of the inclinometer, the input shaft of the inclination adjuster, the hand wheel, the weight, the leveling screw of the frame, the frame, the first double swing rod, the second double swing rod, the fixed link, the goniometer link and the gasket ; Beneficial effect: the angle of repose is directly measured without a goniometer, and the measurement work efficiency is increased by more than 50%; the reading accuracy and consistency are increased by 10%.

Description

Direct reading friction coefficient tester

Technical field:

The direct-reading friction coefficient tester is a static experiment device, especially a test device for directly reading the friction coefficient of an object's surface friction.

Background technique:

It can be known from physics and mechanics that there will always be friction between the surfaces of two objects that are in contact with each other and moving with each other. The coefficient of friction is used to determine the magnitude of the friction force; when measuring the coefficient of friction, it is necessary to continuously measure the same test piece multiple times to obtain one or several sets of data and then process the results through mathematical methods, and the test work is repeated many times; especially in When performing the angle of repose (self-locking angle) test, it is necessary to use a goniometer to measure the inclination angle of the friction surface before reading each test, which makes the test work slow, and the accuracy is also easily affected by operational factors.

Invention content:

The purpose of the invention of the direct-reading friction coefficient tester of the utility model is to design and manufacture a tester that can directly read the friction coefficient completely different from the prior art, so as to improve the efficiency and accuracy of the test work.

The invention of the direct-reading friction coefficient tester of the utility model is realized in the following way: it includes three parts: the test part, the reading part and the frame; Rod, linkage pin, first swing link, upper link, second swing link, hinge pin, pulley frame, pulley, pulley frame adjustment screw, recliner, recliner output shaft, recliner input shaft, hand wheel , weights, frame leveling screws, frame, first double swing rod, second double swing rod, fixed connecting rod, goniometer connecting rod and gasket;

Among them: the test part consists of a level, a flat connecting frame, a test flat, an output shaft of an inclination adjuster, a pulley frame, a pulley, an upper link, a first swing rod, a second swing rod, a pointer link, a hinge pin, a hand wheel, and an inclination angle. The adjuster input shaft, gasket and upper link are composed; the level is installed on the front end of the flat connecting frame, the test flat is fixed on the flat connecting frame, the flat connecting frame is fixed on the output shaft of the inclination adjuster, and the rear end of the flat connecting frame is fixed with The pulley frame, the pulley is installed on the pulley frame, and the upper link is fixed on the left side of the rear end, and the upper link is hinged with the first swing bar, the second swing bar and the pointer link with hinge pins; the hand wheel is fixed at the inclination angle On the input shaft of the regulator, the gasket is fixedly installed between the upper connecting rod and the test plate;

Among them: the reading part is composed of the goniometer, the goniometer connecting rod, the first double swing rod, the second double swing rod, the fixed connecting rod, the hinge pin, the pointer connecting rod and the linkage pin; the goniometer is fixed on the goniometer On the connecting rod, the goniometer connecting rod, the first double swing rod, the second double swing rod and the fixed connecting rod are hinged with a hinge pin, and the goniometer connecting rod and the pointer connecting rod are hinged through a linkage pin;

Among them: the frame part is composed of an inclination adjuster, a fixed link, a frame leveling screw and a frame; the inclination adjuster, a fixed link and a frame leveling screw are all fixedly installed on the frame;

The goniometer connecting rod and the pointer connecting rod are hinged through the linkage pin, which realizes the linkage between the testing part and the reading part, and the test data can be read at any time during the whole process of measuring the angle of repose or self-locking angle.

When the direct-reading friction coefficient tester is working, the connecting rod of the goniometer and the pointer connecting rod are hinged through the linkage pin, which realizes the linkage between the testing part and the reading part, and the test data can be read at any time during the whole process of measuring the angle of repose; For the coefficient of friction, paste the material to be measured on the test plate and the friction surface of the test piece, place the test piece on the front end of the test plate and tie the traction rope and weight plate, and then adjust the test plate to a horizontal position through the hand wheel , and then add weights in the weight (pan) until the specimen starts to slide, at this time the gravity of the weight is the friction force of the specimen movement; the traction rope needs to be removed when measuring the angle of repose (self-locking angle) and the weight plate, the test piece is placed on the front end of the test plate, and then the inclination angle of the test plate is adjusted by the hand wheel until the test piece starts to slide, and the inclination angle of the test plate at this time is the angle of repose of the test piece (self-locking horn). Can be read directly from the goniometer.

The beneficial effect of the direct-reading friction coefficient tester is that the angle of repose is directly measured without a goniometer, and the measuring work efficiency is increased by more than 50%; the reading accuracy and consistency are increased by 10%.

Description of drawings:

Accompanying drawing 1 is the structural representation of the utility model direct-reading friction coefficient tester

Accompanying drawing 2 is the schematic diagram of enlarged structure of part A of the direct-reading friction coefficient tester of the present invention

Accompanying drawing 3 is the structure schematic diagram of the left view of the utility model direct-reading friction coefficient tester

In the figure: level 1, test plate 2, plate connecting frame 3, test piece 4, traction rope 5, goniometer 6, pointer connecting rod 7, linkage pin 8, first swing rod 9, upper connecting rod 10, second Swing rod 11, hinge pin 12, pulley frame 13, pulley 14, pulley frame adjusting screw 15, inclination adjuster 16, inclination adjuster output shaft 17, inclination adjuster input shaft 18, handwheel 19, weight 20, frame Leveling screw 21, frame 22, first double swing rod 23, second double swing rod 25, fixed connecting rod 24, goniometer connecting rod 26, gasket 27

Implementation method:

The direct-reading friction coefficient tester of the utility model includes three parts: a test part, a reading part and a frame; it consists of a level 1, a test plate 2, a plate connection frame 3, a test piece 4, a traction rope 5, a goniometer 6, and a pointer. Connecting rod 7, linkage pin 8, first swing rod 9, upper connecting rod 10, second swing rod 11, hinge pin 12, pulley frame 13, pulley 14, pulley frame adjusting screw 15, inclination adjuster 16, inclination adjuster Output shaft 17, inclination adjuster input shaft 8, hand wheel 19, weight 20, frame leveling screw 21, frame 22, first double swing rod 23, second double swing rod 25, fixed link 24, measuring Composition of goniometer connecting rod 26 and gasket 27;

Among them: the test part consists of a level 1, a flat connecting frame 3, a test flat 2, an output shaft of an inclination adjuster 17, a pulley frame 13, a pulley 14, an upper link 10, a first swing rod 9, a second swing rod 11, a pointer connection Rod 7, hinge pin 12, hand wheel 19, inclination adjuster input shaft 18, gasket 27, upper link 10; Flat connecting frame 3 is fixed on the inclination adjuster output shaft 17, and flat connecting frame 3 rear end is fixed with pulley frame 13, and pulley 14 is installed on the pulley frame 13, and rear end left side also is fixed with upper link 10, and upper connecting rod The rod 10 is hinged with the first swing rod 9, the second swing rod 11 and the pointer connecting rod 7 with the hinge pin 12; between test plates 2;

Among them: the reading part is composed of goniometer 6, goniometer connecting rod 26, first double swing rod 23, second double swing rod 25, fixed connecting rod 24, hinge pin 12, pointer connecting rod 7 and linkage pin 8; The goniometer 6 is fixed on the goniometer connecting rod 26, the goniometer connecting rod 26, the first double swing rod 23, the second double swing rod 25 and the fixed connecting rod 24 are hinged with the hinge pin 12, and the goniometer is connected Rod 26 and pointer connecting rod 7 are hinged by linkage pin 8;

Wherein: the frame part is made up of inclination adjuster 16, fixed connecting rod 24, frame leveling screw 21 and frame 22; 22 on;

The goniometer connecting rod 26 and the pointer connecting rod 7 are hinged through the linkage pin 8, which realizes the linkage between the test part and the reading part, and the test data can be read at any time during the whole process of measuring the angle of repose or self-locking angle.

Claims (1)

1. direct-reading friction factor tester is characterized in that: contain part of detecting, reading part and frame three parts; By spirit-leveling instrument (1), test slab (2), dull and stereotyped link (3), test specimen (4), traction rope (5), angular instrument (6), pointer connecting rod (7), set bar (8), first fork (9), last connecting rod (10), second fork (11), joint pin (12), pulley yoke (13), pulley (14), pulley yoke set screw (15), inclination angle adjustor (16), inclination angle adjustor output shaft (17), inclination angle adjustor input shaft (18), handwheel (19), counterweight (20), frame levelling bolt (21), frame (22), the first double pendulum bar (23), the second double pendulum bar (25), stationary links (24), angular instrument connecting rod (26) and pad (27) are formed;

Wherein: part of detecting is made up of spirit-leveling instrument (1), dull and stereotyped link (3), test slab (2), inclination angle adjustor output shaft (17), pulley yoke (13), pulley (14), last connecting rod (10), first fork (9), second fork (11), pointer connecting rod (7), joint pin (12), handwheel (19), inclination angle adjustor input shaft (18), pad (27) and last connecting rod (10); Spirit-leveling instrument (1) is installed in the front end of dull and stereotyped link (3), test slab (2) is fixed on the dull and stereotyped link (3), dull and stereotyped hitch (3) is fixed on the inclination angle adjustor output shaft (17), dull and stereotyped link (3) rear end is fixed with pulley yoke (13), pulley (14) is installed on the pulley yoke (13), the rear end left surface also is fixed with connecting rod (10), and last connecting rod (10) is hinged with joint pin (12) with first fork (9), second fork (11) and pointer connecting rod (7); Handwheel (19) is fixed on the inclination angle adjustor input shaft (18), and pad (27) is fixedly mounted between connecting rod (10) and the test slab (2);

Wherein: the reading part is made up of angular instrument (6), angular instrument connecting rod (26), the first double pendulum bar (23), the second double pendulum bar (25), stationary links (24), joint pin (12), pointer connecting rod (7) and set bar (8); Angular instrument (6) is fixed on the angular instrument connecting rod (26), angular instrument connecting rod (26), the first double pendulum bar (23), the second double pendulum bar (25) and stationary links (24) are hinged with joint pin (12), and angular instrument connecting rod (26) and pointer connecting rod (7) are hinged by set bar (8);

Wherein: rack section is made up of inclination angle adjustor (16), stationary links (24), frame levelling bolt (21) and frame (22); Inclination angle adjustor (16), stationary links (24) and frame levelling bolt (21) all are fixedly mounted on the frame (22);

Angular instrument connecting rod (26) and pointer connecting rod (7) are hinged by set bar (8), have realized the interlock of part of detecting and reading part, read test data at any time at whole mensuration angle of repose or in locking angle process.

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