CN213986143U

CN213986143U - Many function combination formula coefficient of friction detector

Info

Publication number: CN213986143U
Application number: CN202022943428.3U
Authority: CN
Inventors: 黄炳然; 许雪芬; 刘首利
Original assignee: Wuxi Institute of Technology
Current assignee: Wuxi Institute of Technology
Priority date: 2020-12-11
Filing date: 2020-12-11
Publication date: 2021-08-17
Anticipated expiration: 2030-12-11

Abstract

The utility model discloses a multifunctional combined friction coefficient detector, which comprises a bracket, a platform and a frame, wherein an angle measuring module and a sliding measuring module are arranged on the bracket, the angle measuring module and the sliding measuring module are both connected with the platform and control and measure the platform, and the frame is arranged below the platform and supports the platform; the angle measurement module comprises a first motor, a coupler, a laser ranging sensor and an angle sensor, and the sliding measurement module comprises a second motor, a screw rod, a polished rod and a tension sensor. Compared with the prior art, the utility model, utilize the accredited testing organization of two kinds of differences to drive the test to it on its platform, it has practiced thrift the space, and the testing result is accurate.

Description

Many function combination formula coefficient of friction detector

Technical Field

The utility model relates to an experimental apparatus, specific theory is a can detect detector of sliding measurement coefficient of friction and angular measurement coefficient of friction simultaneously.

Background

Generally, for the detection of the friction coefficient of an object, there are two detection modes, one is to clamp a strip-shaped test sample by a sample clamping device, wrap a slide block by a sample to be detected, then place the slide block on a hanging hole of a sensor, and drive a rack by a motor to move the sensor under a certain contact pressure, namely, to make two test surfaces move relatively. The force signal measured by the sensor is amplified by the integrator and sent to the recorder, and the dynamic friction coefficient and the static friction coefficient (namely the sliding measurement friction coefficient) are recorded respectively. The other is to use a variable slope and a slide block to measure the static friction coefficient of various materials, namely, one part of the sample is clamped on the slope and the other part is clamped on the slide block. Or the motor increases the inclination at a certain speed until the sample holder starts to slide, at which point the ramp is locked and the angle can be readjusted. The tangent to this angle is the coefficient of friction (i.e., the angular measured coefficient of friction).

Generally, two measurement methods are required, two machines are required to perform two tests on the same sample, and therefore, the two machines occupy a large space, and when the sample is transferred, the sample may be damaged or the dripping may be reduced, which affects the final test result.

Disclosure of Invention

An object of the utility model is to provide a can carry out the detector of two kinds of measurement modes simultaneously in order to solve above-mentioned problem.

The utility model discloses a following technical means realize: a multifunctional combined friction coefficient detector comprises a support, a platform and a frame, wherein an angle measuring module and a sliding measuring module are arranged on the support, the angle measuring module and the sliding measuring module are both connected with the platform and used for controlling and measuring the platform, and the frame is arranged below the platform and used for supporting the platform;

the angle measuring module comprises a first motor, a coupler, a laser ranging sensor and an angle sensor, wherein the first motor is connected with the coupler, the coupler is provided with a traction rope connected with one end of the platform, the laser ranging sensor is arranged on the bracket, a sensing part of the laser ranging sensor faces the platform, and the angle sensor is connected with the side surface of the frame;

the sliding measurement module comprises a second motor, a screw rod, a polish rod and a tension sensor, the polish rod is arranged on the support and arranged in parallel, the polish rod penetrates through two opposite side faces of the frame, the second motor is connected to the support, the screw rod is arranged on an output shaft of the second motor, the screw rod also penetrates through the frame, and the tension sensor is arranged at the support where the second motor is located.

And the frame is fixedly connected with a screw rod nut, and the screw rod nut is arranged on the screw rod.

And a limit switch is arranged on one side of the bracket opposite to the second motor, and when the frame moves to the tail end of the polished rod, the limit switch is contacted with the frame.

The first motor and the second motor are speed reducing motors.

The pull sensor is provided with a pull rope, the pull rope is connected with an object to be detected placed on the platform, and the pull rope is a metal wire.

Compared with the prior art, the utility model, utilize the accredited testing organization of two kinds of differences to drive the test to it on its platform, it has practiced thrift the space, and the testing result is accurate.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a top view of the present invention.

Wherein: 1. the system comprises a first motor 2, a traction rope 3, a platform 4, a polished rod 5, a lead screw 6, a limit switch 7, a frame 8, an angle sensor 9, a second motor 10, a coupler 11, a tension sensor and a Bluetooth module 12.

Detailed Description

The invention is described in further detail below with reference to the drawings in the specification:

the utility model relates to a many function combination formula coefficient of friction detector, including support, platform 3, frame 7, set up angle measurement module and slip measurement module on the support, angle measurement module all be connected with platform 3 with the slip measurement module to control the measurement to platform 3, frame 7 set up in platform 3 below and support platform 3.

The angle measurement module include first motor 1, shaft coupling 10, laser rangefinder sensor, angle sensor 8, first motor 1 connect shaft coupling 10, set up 2 connection platform 3's of haulage rope one end on the shaft coupling 10, laser rangefinder sensor set up on the support, just laser rangefinder sensor's sensing portion set up towards platform 3, angle sensor 8 is connected with the frame side.

Particularly, the detachable one end with platform 3 of haulage rope 2 be connected, platform 3 and frame 7 rotate through two hinges and be connected, and the link setting of haulage rope 2 is in frame pivoted free side, 2 front ends of haulage rope set up colludes the claw, set up corresponding depressed part or through-hole on the platform, collude the claw and can imbed in depressed part or through-hole at the during operation to the realization is lifted platform one side.

The sliding measurement module comprises a second motor 9, a screw rod 5, a polish rod 4 and a tension sensor 11, the polish rod 4 is arranged on a support, the polish rod 4 is arranged in parallel, the polish rod 4 penetrates through two opposite side faces of a frame 7, the second motor 9 is connected onto the support, the screw rod 5 is arranged on an output shaft of the second motor 9, the screw rod 5 also penetrates through the frame 7, and the tension sensor 11 is arranged at the support where the second motor 9 is located.

Further, a screw nut is fixedly connected to the frame 7 and arranged on the screw rod 5, in other words, a screw nut is arranged in the inner space of the frame 7 and matched with the screw rod 5, and when the screw rod 5 rotates, the screw nut can move on the screw rod and further drive the frame 7 to move.

A limit switch 6 is arranged on the side of the bracket opposite to the second motor 9, when the frame 7 moves to the tail end of the polished rod 4, the limit switch 6 is contacted with the frame 7, thereby giving a signal to the second motor to stop. The utility model discloses in, first motor 1 and second motor 9 be gear motor.

The utility model discloses in force sensor 11 on set up the stay cord, stay cord connection platform on the object that awaits measuring of placing, the haulage rope is the wire with the stay cord.

The utility model discloses still include bluetooth communication module and singlechip, singlechip and above-mentioned electrical component data connection, bluetooth communication module and singlechip data connection, bluetooth communication module and user's handheld device are connected, and user's accessible handheld device acquires measured data and changes measurement mode.

The following is detailed by specific examples:

the device consists of three parts, namely a Bluetooth module 12, an angle measuring module and a sliding measuring module. The angle measuring module is connected with a coupler 10 through a direct current motor 1, then one end of a platform 3 is pulled by a traction rope 2 to enable the inclination angle of the platform 3 to be changed, and when the angle reaches a certain degree, the object block begins to slide downwards. And then, when the laser ranging sensor at the same end detects that the position of the object changes, the laser ranging sensor immediately sends a signal to stop the direct current motor 1 from working, and the change of the plane inclination angle is stopped. The angle sensor 8 reads the angle, converts the angle into a friction coefficient in the single chip microcomputer, and then sends data to the mobile phone in real time through the Bluetooth module. And then the traction rope 2 is separated from the platform 3, so that the platform 3 is restored to the horizontal state for sliding measurement. The sliding measurement module controls the whole supporting frame 7 to horizontally and slowly move on a track fixed by the polished rod 4 by a direct current motor 9 and a lead screw 5. The tension sensor 11 (the measuring part is connected with the measured object by a rope) measures the sliding friction force of the object on the plane 3 in real time, and the reading of data is stopped when the value tends to be stable. And finally displaying the value as the final measurement value. The supporting frame 7 continues to move horizontally, and starts to move reversely after the edge touches the limit switch 6 until returning to the initial position. The numerical value is also sent to the mobile phone through the Bluetooth module. The switching between the angle measurement mode and the sliding measurement mode is also completed by sending a command to the singlechip through the mobile phone.

Claims

1. A multifunctional combined friction coefficient detector is characterized in that: the angle measurement device comprises a support, a platform and a frame, wherein an angle measurement module and a sliding measurement module are arranged on the support, the angle measurement module and the sliding measurement module are both connected with the platform and used for controlling and measuring the platform, and the frame is arranged below the platform and used for supporting the platform;

2. The multifunctional combined friction coefficient detector according to claim 1, characterized in that: and the frame is fixedly connected with a screw rod nut, and the screw rod nut is arranged on the screw rod.

3. The multifunctional combined friction coefficient detector according to claim 1, characterized in that: and a limit switch is arranged on one side of the bracket opposite to the second motor, and when the frame moves to the tail end of the polished rod, the limit switch is contacted with the frame.

4. The multifunctional combined friction coefficient detector according to claim 1, characterized in that: the first motor and the second motor are speed reducing motors.

5. The multifunctional combined friction coefficient detector according to claim 1, characterized in that: the pull sensor is provided with a pull rope, and the pull rope is connected with an object to be detected placed on the platform.

6. The multifunctional combined friction coefficient detector according to claim 1, characterized in that: the hauling cable is a metal wire.