CN102175451A - Dynamic load test bed for shaft coupler - Google Patents

Abstract

The invention provides a coupling dynamic load test bench, which includes a load motor, an output reducer, a tested coupling, an input reducer, a motor, an equipment base, a pressure sensor, a traveling motor, Running mechanism, speed sensor, speed sensor mounting bracket, pressure sensor, moving auxiliary slide rail, output flange, input flange. The rotational speed sensor and the pressure sensor are connected with the data acquisition device, and by processing and analyzing the collected data, the operation, wear and damage of each part of the coupling under different rotational speed and torque conditions can be known. The coupling dynamic load test bench provided by the present invention is mainly used for the comprehensive dynamic load test detection of the entire shaft coupling. The actual working conditions are simulated by the coupling dynamic load test bench, so as to know the coupling under different speed and torque conditions. The work, wear and damage of each part of the device. And the remaining electric energy after the test is sent back to the grid to reduce the cost of the test.

Description

Coupling dynamic load test bench

Technical field:

The invention relates to a dynamic load test bench for rotating mechanical components, in particular to a dynamic load test bench for shaft couplings.

Background technique:

At present, the test and detection of the whole coupling are basically static. In particular, the entire coupling has not been subjected to a dynamic load test before leaving the factory, because the relevant national standard is a static test. Static test and dynamic load test are two different concepts. The static test cannot reflect the condition of the coupling in operation, and the dynamic load test is to build a motion platform to test the coupling according to the condition of the coupling in operation. The use of the coupling is an open operation, that is, all the power provided by the motor must be consumed. Due to the high cost, the dynamic load test of the coupling can only be performed on a single component on the coupling. The current whole test of the coupling is carried out at the coupling manufacturer's site, which seriously affects the normal operation of the coupling manufacturer. Therefore, the dynamic load test detection of the whole coupling before leaving the factory has become a problem to be solved.

Invention content:

The purpose of the present invention is to provide a test stand capable of carrying out the dynamic load test of the coupling as a whole, so as to overcome the deficiency of the static test of the coupling.

The coupling dynamic load test bench provided by the present invention includes a load motor 1, an output reducer 2, an input reducer 4, a motor 5, an equipment base 6, a pressure sensor 7, a traveling motor 8, a traveling mechanism 9, a speed sensor 10, Rotational speed sensor mounting bracket 11, pressure sensor 12, mobile auxiliary slide rail 13, output flange 14, input flange 15, the output reducer 2 and the equipment base 6 are connected through the running mechanism 9, the output of the output reducer 2 end is connected with the load motor 1, the input reducer 4 is connected with the equipment base 6, the input end of the input reducer 4 is connected with the motor 5, the output end of the input reducer 4 is connected with the input flange 15 The tested coupling 3 is connected, the input end of the output reducer 2 is connected with the tested coupling 3 through the output flange 14, the traveling mechanism 9 is connected with the traveling motor 8, and a moving Auxiliary slide rail 13, the pressure sensor 9 is installed under the load motor 1, the rotational speed sensor 10 is installed on the rotational speed sensor mounting bracket 11, and the rotational speed sensor mounting bracket 11 is installed on the input reducer 4 or installed On the equipment base 6 , the pressure sensor 12 is installed below the motor 5 .

The load motor 1 is an electric motor or a generator, the running motor 8 is installed on the running mechanism 9, the casing of the running mechanism 9 is integrated or connected with the casing of the output reducer 2, and the running mechanism 9 Located on the mobile auxiliary slide rail 13 of the equipment base 6 and connected mechanically, the running mechanism 9 and the equipment base 6 realize the displacement of the running mechanism 9 on the equipment base 6 through mechanical driving.

The reduction ratio of the input reducer 2 is greater than or equal to 1, so that the output torque of the input reducer 2 is greater than or equal to its input; the reduction ratio of the output reducer 4 is less than or equal to 1 but cannot be equal to zero, so that The output speed of the output reducer 4 is greater than or equal to its input; the input of the output reducer 2 is only one, and the output of the output reducer 2 is one or more. 2. The speed of the connected motor is controlled by a voltage regulator. There is only one output end of the input reducer 4, and there are one or more input ends of the input reducer 4. One of the motors connected to the input reducer 4 The speed is controlled by a frequency converter or a voltage regulator, and the speed of the traveling motor 8 is controlled by a frequency converter.

The rotational speed sensor and the pressure sensor are connected with the data acquisition device, and by processing and analyzing the collected data, the operation, wear and damage of each part of the coupling under different rotational speed and torque conditions can be known.

The coupling dynamic load test bench provided by the present invention is mainly used for the comprehensive dynamic load test detection of the entire shaft coupling. The actual working conditions are simulated by the coupling dynamic load test bench, so as to know the coupling under different speed and torque conditions. The work, wear and damage of each part of the device. And the remaining electric energy after the test is sent back to the grid to reduce the cost of the test.

Description of drawings:

Fig. 1 is a schematic structural diagram of a coupling dynamic load test bench in which a motor or generator and a rotational speed sensing device are installed on an input reducer and an output reducer, and Fig. 2 is a top view of Fig. 1 .

Fig. 3 is a schematic diagram of the structure of a coupling dynamic load test bench in which the motor or generator and the speed sensing device are installed on the equipment base, and Fig. 4 is a top view of Fig. 3 .

In the figure: 1-motor or generator, 2-output reducer, 3-coupling under test, 4-input reducer, 5-motor, 6-equipment base, 7-pressure sensor, 8-travel motor, 9 -Traveling mechanism, 10-speed sensor, 11-speed sensor mounting bracket, 12-pressure sensor, 13-moving auxiliary slide rail, 14-output flange, 15-input flange.

Detailed ways:

The technical solution of the present invention is further described below in conjunction with accompanying drawings: With reference to Fig. 1～4, coupling dynamic load test bench comprises, load motor 1, output reducer 2, measured coupling 3, input reducer 4, motor 5 , Equipment base 6, pressure sensor 7, travel motor 8, travel mechanism 9, speed sensor 10, speed sensor mounting bracket 11, pressure sensor 12, mobile auxiliary slide rail 13, output flange 14, input flange 15.

The output reducer 2 is connected to the equipment base 6 through the running mechanism 9, the output end of the output reducer 2 is mechanically connected to the load motor 1, and the input reducer 4 is connected to the equipment base 6 Mechanically connected, the input end of the input reducer 4 is mechanically connected to the motor 5 , and the traveling mechanism 9 is mechanically connected to the traveling motor 8 .

The input end of the output reducer 2 is mechanically connected to the output flange 14, the output end of the input reducer 4 is mechanically connected to the input flange 15, and the output flange 14 and the input flange 15 are respectively The two ends of the tested shaft coupling 3 are mechanically connected, and the input end of the output reducer 2 and the output end of the input reducer 4 may be on the same axis or not.

The load motor 1 and the motor 5 can be installed on the corresponding output reducer 2 and input reducer 4 or on the equipment base 6 by mechanical means.

The traveling motor 8 is mechanically installed on the traveling mechanism 9 .

The casing of the traveling mechanism 9 and the casing of the output reducer 2 may be integrated or coupled together mechanically.

A mobile auxiliary slide rail 13 is arranged on the equipment base 6, and the running mechanism 9 is located on the mobile auxiliary slide rail 13 of the equipment base 6 and is mechanically connected. The running mechanism 9 and the equipment base 6 The displacement of the running mechanism 9 on the equipment base 6 is realized by means of mechanical driving.

The rotational speed sensor 10 is mechanically installed on the rotational speed sensor mounting bracket 11 , and the rotational speed sensor mounting bracket 11 can be mechanically installed on the input reducer 4 or on the equipment base 6 .

The pressure sensor 9 is installed below the installation position of the load motor 1 .

The pressure sensor 10 is installed below the installation position of the motor 5 .

The output speed reducer 2 is displaced between the running mechanism 9 and the equipment base 6 so as to adapt to tested shaft couplings 3 of different lengths.

The load motor 1 can be an electric motor or a generator.

The rotational speed sensor 10, the pressure sensor 7, and the pressure sensor 12 are connected with a data acquisition device.

The reduction ratio of the input reducer 2 is greater than or equal to 1, so that the torque at the output end of the input reducer 2 is greater than or equal to its input end.

The reduction ratio of the output speed reducer 4 is less than or equal to 1 but not equal to zero, so that the output speed of the output speed reducer 4 is greater than or equal to its input speed.

Claims (3)

1. shaft coupling dynamic test platform, it is characterized in that this shaft coupling dynamic test platform comprises load motor (1), output decelerator (2), input speed reduction unit (4), motor (5), plant bottom case (6), pressure transducer (7), traveling motor (8), running mechanism (9), speed probe (10), speed probe mounting bracket (11), pressure transducer (12), moving sets slide rail (13), output flange (14), input flange (15), described output decelerator (2) connects by running mechanism (9) with plant bottom case (6), the output terminal of described output decelerator (2) connects with described load motor (1), described input speed reduction unit (4) connects with plant bottom case (6), the input end of described input speed reduction unit (4) connects with motor (5), the output terminal of described input speed reduction unit (4) connects with tested shaft coupling (3) by input flange (15), the input end of output decelerator (2) connects with tested shaft coupling (3) by output flange (14), and described running mechanism (9) connects with traveling motor (8); Described plant bottom case (6) is provided with moving sets slide rail (13), described pressure transducer (9) is installed in the below of described load motor (1), described speed probe (10) is installed on the speed probe mounting bracket (11), described speed probe mounting bracket (11) is installed in input speed reduction unit (4) and goes up or be installed on the described plant bottom case (6), and described pressure transducer (12) is installed in the below of motor (5).

2. shaft coupling dynamic test platform according to claim 1, it is characterized in that: described load motor (1) is motor or is generator, described traveling motor (8) is installed on the running mechanism (9), the shell of the shell of described running mechanism (9) and output decelerator (2) is one or is linked together, described running mechanism (9) is positioned at the moving sets slide rail (13) of plant bottom case (6) to be gone up and connection mechanically, and described running mechanism (9) realizes that by the Mechanical Driven mode running mechanism (9) is at plant bottom case (6) top offset with plant bottom case (6).

3. shaft coupling dynamic test platform according to claim 1 is characterized in that: the deceleration ratio of described input speed reduction unit (2) is more than or equal to 1, and the output terminal moment of torsion that makes described input speed reduction unit (2) is more than or equal to its input end; The deceleration ratio of described output decelerator (4) is less than or equal to 1 but can not equal zero, and the output terminal rotating speed that makes described output decelerator (4) is more than or equal to its input end; The input end of described output decelerator (2) has only one, the output terminal of described output decelerator (2) is more than one and one, the rotating speed of the described motor that connects with output decelerator (2) is controlled by pressure regulator, the output terminal of described input speed reduction unit (4) has only one, the input end of described input speed reduction unit (4) is more than one and one, the rotating speed of the described motor that connects with input speed reduction unit (4) is by frequency converter or pressure regulator control, and the rotating speed of described traveling motor (8) is by Frequency Converter Control.

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