Gear box locked-rotor service life test bench

Abstract

The utility model relates to the technical field of gearbox locked-rotor test, in particular to a gearbox locked-rotor service life test board, which comprises a test board main body, the test board main body is provided with a front test part and a rear operation part, the operation part is raised, and the operation part is provided with an operation board inclining forwards. A PLC (Programmable Logic Controller) and a power supply module are arranged in the operating platform, a thick plate is arranged on the testing part, a reinforcing plate is arranged on the thick plate, and a gearbox fixing seat for fixing a gearbox and a gearbox output main shaft which is in power connection with the gearbox and corresponds to the gearbox fixing seat are arranged on the reinforcing plate; the reinforcing plate is further provided with a torque sensor, a damper, an inner rotor motor and an encoder, and the torque sensor, the damper, the inner rotor motor and the encoder are all mechanically connected to the gearbox output main shaft. The gearbox locked-rotor life test bench is compact in structural design, and the gearbox locked-rotor life test bench can be made to be smaller in size, so that a user can conveniently transport the gearbox locked-rotor life test bench to different workshops to test the gearbox.

Description

Technical Field

[0001] The utility model relates to the technical field of gear box stall testing, in particular to a gear box stall life testing platform. Background Art

[0002] The gearbox locked rotor life test bench is usually used to test the service life and performance of the gearbox (gearbox) in a locked rotor state. It can simulate the operation of the gearbox under extreme working conditions, and evaluate the durability, reliability, heating, wear degree of parts and other related parameters of the gearbox by applying specific loads and limiting rotation.

[0003] For example, a motor controller test bench described in the invention patent application publication number CN110083140A, through the design of the torque encoder, limit tube and brake in the motor feedback component, enables the test bench to perform a motor stall test. Through the motor stall test feedback, the control performance of the controller can be effectively judged. At the same time, in the motor stall test, dynamic stall tests and static stall tests can be flexibly performed according to the test requirements, thereby improving the practicality and versatility of the test bench.

[0004] However, the existing gear box jam life test bench is not compact enough in structural design, it is not convenient for operators to move the gear box jam life test bench, and the jam condition of the gear box cannot be intuitively observed while adjusting various parameters of the gear box jam life test bench. Therefore, it is necessary to propose an improved technical solution to solve the above problems. Utility Model Content

[0005] The utility model aims to overcome the above-mentioned shortcomings and provide a technical solution that can solve the above-mentioned problems.

[0006] A gear box stall life test bench comprises a test bench body, wherein the test bench body comprises a front test position and a rear operation position, wherein the operation position is elevated and provided with an operation table inclined forward, wherein a PLC programmable controller and a power supply module are arranged inside the operation table, wherein a thick plate is installed on the test position, wherein a reinforcing plate is installed on the thick plate, wherein a gear box fixing seat for fixing the gear box and a gear box output spindle which is dynamically connected to the gear box and corresponds to the gear box fixing seat are arranged on the reinforcing plate, wherein a torque sensor, a damper, an inner rotor motor and an encoder are also arranged on the reinforcing plate, wherein the torque sensor, the damper, the inner rotor motor and the encoder are all mechanically connected to the gear box output spindle; wherein a damping adjustment plate for adjusting damper parameters, a voltage-stabilized power supply adjustment plate for ensuring the normal operation of the encoder, and an industrial control screen for measuring test parameters are installed on the operation table; wherein the PLC programmable controller is electrically connected to the power supply module via the voltage-stabilized power supply adjustment plate, wherein the damper is electrically connected to the PLC programmable controller via the damping adjustment plate, wherein the torque sensor, the inner rotor motor, the encoder and the industrial control screen are all electrically connected to the PLC programmable controller respectively.

[0007] Preferably, the PLC programmable controller is also electrically connected to a current detection sensor for detecting current during operation.

[0008] Preferably, the PLC programmable controller is also electrically connected to a temperature sensor for detecting the temperature of the gear box.

[0009] Preferably, a heat dissipation fan facing the inner rotor motor is also installed on the reinforcing plate, wherein the gear box fixing seat, the torque sensor, the damper, the inner rotor motor, the encoder and the heat dissipation fan are arranged in sequence.

[0010] Preferably, a motor fixing seat is also provided on the reinforcing plate, and the motor fixing seat includes a vertical plate and right-angle plates installed on both sides of the vertical plate, the vertical plate and the right-angle plates are both installed on the reinforcing plate, and the inner rotor motor is installed on the vertical plate.

[0011] Preferably, a damper support seat for lifting the damper and an encoder fixing plate for lifting the encoder are also installed on the reinforcing plate.

[0012] Preferably, handles are respectively connected to both sides of the test bench body.

[0013] Preferably, an operation key is also provided on the thick plate, the operation key is electrically connected to the PLC programmable controller, and the operation key is located at the front of the thick plate.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] By setting the test bench body to have a front test part and a rear operating part, the test part is mainly used to install the gear box fixing seat, torque sensor, damper, inner rotor motor and encoder, and the operating part is mainly used to install the damping adjustment plate, voltage-stabilized power supply adjustment plate and industrial control screen. During the gear box test, the user can intuitively observe the operation of various components while setting various parameters. The operating table is raised and the operating table can be flexibly operated during the gear box test. The compact structure can make the gear box stuck rotor life test bench smaller, so that the user can transport it to different workshops for testing the gear box.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Figure 2 It is a schematic diagram of the structure of the components of the utility model installed on the reinforcement plate;

[0020] Figure 3 It is a circuit module connection block diagram of the utility model.

[0021] The reference numerals and names in the figures are as follows:

[0022] Test bench body 10, operating table 11, thick plate 12, reinforcing plate 13, gear box fixing seat 14, gear box output spindle 15, motor fixing seat 16, damper support seat 17, encoder fixing plate 18, handle 19, PLC programmable controller 20, power supply module 21, torque sensor 22, damper 23, inner rotor motor 24, encoder 25, damping adjustment plate 26, voltage-stabilized power supply adjustment plate 27, industrial control panel 28, current detection sensor 29, temperature sensor 30, cooling fan 31, operation key 32. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] See also Figure 1-3 In an embodiment of the utility model, a gear box stall life test bench comprises a test bench body 10, the test bench body 10 has a front test position and a rear operation position, the operation position is elevated, and the operation position is provided with an operation table 11 tilted forward, a PLC programmable controller 20 and a power supply module 21 are arranged inside the operation table 11, a thick plate 12 is installed on the test position, a reinforcing plate 13 is installed on the thick plate 12, a gear box fixing seat 14 for fixing the gear box and a gear box output spindle 15 which is connected to the gear box and corresponds to the gear box fixing seat 14 by power are arranged on the reinforcing plate 13, a torque sensor 22, a damper 23, an inner rotor motor 24 and an encoder 25 are also arranged on the reinforcing plate 13, and the torque sensor 22, the damper 23, the inner rotor motor 24 and the encoder 25 are all mechanically connected to the gear box output spindle 15;

[0025] Among them, by setting the torque sensor 22, the torque applied to the gear box can be accurately obtained when the gear box is stalled, which helps to evaluate the maximum torque that the gear box can withstand under extreme load conditions and provide key data for design and improvement; by setting the damper 23, at the moment of stalling, the inner rotor motor 24 and the gear box system will generate huge impact energy. The damper 23 can absorb and buffer this part of energy, reduce the instantaneous impact force on the gear box stall life test bench and components, and protect the test device from excessive damage. The existence of the damper 23 can more realistically simulate this load mutation, thereby evaluating the reliability and durability of the gear box under complex working conditions, reducing the strong vibration and noise generated during stalling, and providing a relatively quieter and more stable test environment, while also helping to extend the service life of the test equipment; the encoder 25 can accurately measure the speed and position. During the stall test, although the gear box output spindle 15 may be stuck and unable to rotate normally, the encoder 25 can still provide accurate position and speed information. By observing the process of the speed gradually dropping from normal to zero, the instantaneous and process characteristics of the stall can be analyzed. The encoder 25 can also monitor torque changes. Combined with other torque sensors 22, the signal of the encoder 25 can be used to calculate the change in torque. At the moment of stalling, the torque usually rises sharply. The encoder 25 helps to accurately capture the moment and degree of this change.

[0026] On this basis, a damping adjustment plate 26 for adjusting the parameters of the damper 23, a voltage-stabilized power supply adjustment plate 27 for ensuring the normal operation of the encoder 25, and an industrial control panel 28 for measuring test parameters are installed on the operating table 11; the PLC programmable controller 20 is electrically connected to the power supply module 21 through the voltage-stabilized power supply adjustment plate 27, the damper 23 is electrically connected to the PLC programmable controller 20 through the damping adjustment plate 26, and the torque sensor 22, the inner rotor motor 24, the encoder 25 and the industrial control panel 28 are electrically connected to the PLC programmable controller 20 respectively.

[0027] By setting the test bench body 10 to have a front test part and a rear operation part, the test part is mainly used to install the gear box fixing seat 14, the torque sensor 22, the damper 23, the inner rotor motor 24 and the encoder 25, and the operation part is mainly used to install the damping adjustment plate 26, the voltage-stabilized power supply adjustment plate 27 and the industrial control screen 28. During the process of the gear box test, the user can intuitively observe the operation of various components while setting various parameters, and the operating table 11 is raised. The operating table 11 can be flexibly operated during the process of the gear box locked rotor life test bench testing the gear box. The compact structure design can make the gear box locked rotor life test bench smaller in size, so that it is convenient for users to transport it to different workshops to test the gear box;

[0028] A voltage-stabilized power supply regulating board 27 is provided to ensure that the encoder 25 obtains a stable and non-fluctuating power supply during operation, which helps to improve the measurement accuracy and working stability of the encoder 25. The stable voltage helps to reduce power supply noise and interference, thereby reducing the impact on the output signal of the encoder 25 and improving the quality and reliability of the signal. A suitable voltage-stabilized power supply can prevent the occurrence of overvoltage or undervoltage, avoid damage to the internal electronic components of the encoder 25, and extend the service life of the encoder 25. In a complex power supply environment, the voltage-stabilized power supply regulating board 27 can convert the unstable input power supply into the stable voltage required by the encoder 25, thereby enhancing the environmental adaptability of the encoder 25.

[0029] See also Figure 3In the embodiment of the utility model, the PLC programmable controller 20 is also electrically connected to a current detection sensor 29 for detecting the current during operation. The current detection sensor 29 is mainly used to monitor the current changes of the tooth box in real time during operation. The current data can be used to determine whether the tooth box has abnormal conditions such as stalling; the PLC programmable controller 20 is also electrically connected to a temperature sensor 30 for detecting the temperature of the tooth box; the temperature sensor 30 is installed on the surface of the tooth box or at a position inside the tooth box where the temperature is easy to measure, ensuring that the sensor is in close contact with the surface of the tooth box to ensure the accuracy of the measurement result. After the installation is completed, the temperature sensor 30 needs to be calibrated. The specific calibration method can refer to the instruction manual of the sensor. After the calibration is completed, the temperature changes of the tooth box during operation can be measured normally.

[0030] See also Figure 1-2 In the embodiment of the utility model, a cooling fan 31 facing the inner rotor motor 24 is also installed on the reinforcing plate 13, wherein the gear box fixing seat 14, the torque sensor 22, the damper 23, the inner rotor motor 24, the encoder 25 and the cooling fan are arranged in sequence, and the cooling fan 31 can play a role in dissipating the heat of the inner rotor motor 24, which helps to keep the inner rotor motor 24 in abnormal operation without damage during the gear box jam detection process.

[0031] See also Figure 2 In the embodiment of the utility model, the reinforcing plate 13 is also provided with a motor fixing seat 16, which includes a vertical plate and right-angle plates installed on both sides of the vertical plate, the vertical plate and the right-angle plates are both installed on the reinforcing plate 13, and the inner rotor motor 24 is installed on the vertical plate; the reinforcing plate 13 is also provided with a damper support seat 17 for raising the damper 23 and an encoder fixing plate 18 for raising the encoder 25. The inner rotor motor 24, the damper 23 and the encoder 25 can be installed at the same height, and the firmness and stability of the installation of the three can be ensured, thereby ensuring the accuracy of the detection.

[0032] See also Figure 1 and Figure 3 In the embodiment of the utility model, handles 19 are respectively connected to both sides of the test bench body 10, which is convenient for taking and placing the gear box jam life test bench; an operation key 32 is also provided on the thick plate 12, and the operation key 32 is electrically connected to the PLC programmable controller 20, and the operation key 32 is located at the front of the thick plate 12, which is convenient for the operator to operate the gear box jam life test bench in time to start and stop the detection of the gear box.

[0033] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

Claims

1. A gear box locked rotor life test bench, characterized in that: The invention comprises a test bench body, wherein the test bench body comprises a test part at the front and an operating part at the rear, wherein the operating part is elevated and provided with an operating table tilted toward the front, wherein a PLC programmable controller and a power supply module are arranged inside the operating table, wherein a thick plate is installed on the test part, wherein a reinforcing plate is installed on the thick plate, wherein a tooth box fixing seat for fixing a tooth box and a tooth box output spindle which is dynamically connected to the tooth box and corresponds to the tooth box fixing seat are arranged on the reinforcing plate, wherein a torque sensor, a damper, an inner rotor motor and an encoder are also arranged on the reinforcing plate, wherein the torque sensor, the damper, the inner rotor motor and the encoder are all mechanically connected to the tooth box output spindle; wherein a damping adjustment plate for adjusting damper parameters, a voltage-stabilized power supply adjustment plate for ensuring the normal operation of the encoder, and an industrial control screen for measuring test parameters are installed on the operating table; wherein the PLC programmable controller is electrically connected to the power supply module via the voltage-stabilized power supply adjustment plate, wherein the damper is electrically connected to the PLC programmable controller via the damping adjustment plate, wherein the torque sensor, the inner rotor motor, the encoder and the industrial control screen are all electrically connected to the PLC programmable controller respectively.

2. A gear box locked rotor life test bench according to claim 1, characterized in that: The PLC programmable controller is also electrically connected to a current detection sensor for detecting current during operation.

3. The gear box locked rotor life test bench according to claim 1, characterized in that: The PLC programmable controller is also electrically connected to a temperature sensor for detecting the temperature of the gear box.

4. The gear box locked rotor life test bench according to claim 1, characterized in that: A cooling fan facing the inner rotor motor is also installed on the reinforcing plate, wherein the gear box fixing seat, the torque sensor, the damper, the inner rotor motor, the encoder and the cooling fan are arranged in sequence.

5. The gear box locked rotor life test bench according to claim 1, characterized in that: The reinforcing plate is also provided with a motor fixing seat, which includes a vertical plate and right-angle plates installed on both sides of the vertical plate. The vertical plate and the right-angle plates are both installed on the reinforcing plate, and the inner rotor motor is installed on the vertical plate.

6. The gear box locked rotor life test bench according to claim 1, characterized in that: A damper support seat for lifting the damper and an encoder fixing plate for lifting the encoder are also installed on the reinforcement plate.

7. The gear box locked rotor life test bench according to claim 1, characterized in that: Handles are respectively connected to both sides of the test bench body.

8. The gear box locked rotor life test bench according to claim 2, characterized in that: The thick plate is also provided with an operation key, which is electrically connected to the PLC programmable controller and is located at the front of the thick plate.

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