Energy feedback type hub reduction gear testing device

Abstract

The invention discloses an energy feedback type hub reduction gear testing device, and relates to the technical field of engineering machinery vehicle hub reduction gear experiments. An AC power source; a workpiece to be measured; the sensor assemblies are distributed between the alternating-current power source and the measured workpiece and between the measured workpiece and the energy recovery mechanism, and are used for measuring output parameters of the alternating-current power source and the measured workpiece. Kinetic energy of the output end of a tested workpiece is recovered through the energy recovery system, then the kinetic energy is converted through the alternating current conversion mechanism and then output to be supplied to the device for operation, energy consumption can be relatively reduced and test cost can be relatively reduced for long-time and high-power operation test items such as a fatigue test, and the cooling mechanism is further installed on the test table for heat dissipation, so that the test efficiency is improved. The device can work safely and stably in a long-time test, and is provided with adjustable mechanisms such as a guide rail and the like, so that the device can be applied to wheel-side speed reducers of different models and different sizes.

Description

Technical Field

[0001] The invention relates to the technical field of wheel reducer experiments for engineering machinery vehicles, and in particular to an energy feedback type wheel reducer testing device. Background Art

[0002] As an important component of the transmission system of engineering vehicles, the wheel-side reducer plays the role of reducing speed and increasing torque. Its performance and reliability directly affect the stability of the vehicle. Therefore, the wheel-side reducer experiment is essential in the design verification stage.

[0003] The prior art publication number CN215931279U discloses a test device with a spline coupling, which solves the problem that when the previous test bench is connected to the reducer, it is not convenient to connect the reducer with different rotating rod lengths, and it is easy to cause the connection part to be unstable and inconvenient to install and disassemble. However, the existing wheel-side reducer test bench has energy consumption and waste problems, especially in the test of the fatigue running performance of the wheel-side reducer. The test bench runs for a long time and at high power, resulting in a lot of electric energy waste, and requires a high experimental cost. Summary of the invention

[0004] The purpose of the present invention is to provide an energy feedback wheel reducer testing device to solve the problem of long-term and high-power operation of the test bench in the fatigue operation performance experiment of the wheel reducer proposed in the above-mentioned background technology, which causes a lot of electric energy waste and requires very high experimental costs.

[0005] To achieve the above object, the present invention provides the following technical solution: an energy feedback wheel reducer testing device, comprising: Test bench; an AC power source, the AC power source being installed on the test bench; A workpiece to be measured, wherein the input end of the workpiece to be measured is drivingly connected to the output shaft of the AC power source; An energy recovery mechanism, wherein an input end of the energy recovery mechanism is drivingly connected to an output end of the workpiece to perform energy recovery; and A sensor component is distributed between the AC power source and the workpiece to be measured and between the workpiece to be measured and the energy recovery mechanism, and is used to measure output parameters of the AC power source and the workpiece to be measured.

[0006] Preferably, the energy recovery mechanism comprises: A direct current power generation mechanism, the direct current power generation mechanism is drivingly connected to the workpiece to generate electricity; an electric control cabinet, the electric control cabinet being electrically connected to the DC power generation mechanism to receive the DC power from the DC power generation mechanism; and The AC conversion mechanism is electrically connected to the electric control cabinet to obtain power, and the output three-phase industrial frequency current is fed back to the power supply after passing through a step-up transformer.

[0007] Preferably, the DC power generation mechanism comprises a speed increaser drivingly connected to the workpiece to be measured and a DC generator drivingly connected to the speed increaser, and the DC generator is electrically connected to the electric control cabinet; The AC conversion mechanism includes a DC motor electrically connected to the electric control cabinet for power supply and an AC synchronous generator drivingly connected to the DC motor. The DC motor drives the AC synchronous generator to output three-phase industrial frequency current.

[0008] Preferably, the sensor assembly includes a first torque speed sensor and a second torque speed sensor; The output end of the AC power source is equipped with a first coupling input end, the output end of the first coupling is connected to the first torque speed sensor, the other end of the first torque speed sensor is equipped with a second coupling, the output end of the second coupling is connected to the input end of the workpiece to be measured, the output end of the workpiece to be measured is equipped with a transfer tool, the other end of the transfer tool is connected to the input end of the third coupling, the output end of the third coupling is connected to the second torque speed sensor, the other end of the second torque speed sensor is connected to the input end of the fourth coupling, the output end of the fourth coupling is connected to the input end of the speed increaser, the output end of the speed increaser is connected to the input end of the fifth coupling, and the input end of the DC generator is connected to the output end of the fifth coupling; The output shaft of the DC motor is connected to the input end of the sixth coupling, and the input shaft of the AC synchronous generator is connected to the output end of the sixth coupling.

[0009] Preferably, the test bench is also equipped with an equipment installation frame assembly for installing and fixing the AC power source, the workpiece to be tested, the energy recovery mechanism, the sensor assembly and the AC conversion mechanism.

[0010] Preferably, the mounting frame assembly includes a first support frame provided on the test bench for mounting the AC power source, two sets of first support plates for mounting the sensor assembly, a second support plate for mounting the workpiece to be measured, a fixing block for mounting the speed increaser, a first support frame for mounting the DC generator, a first frame for mounting the DC motor, and a second frame for mounting the AC synchronous generator; The first torque and speed sensor is installed on the first support plate between the AC power source and the workpiece to be measured, and the second torque and speed sensor is installed on the first support plate between the workpiece to be measured and the energy recovery mechanism.

[0011] Preferably, the first support plate and the first support frame on which the first torque and speed sensor are mounted are also provided with guide rails for sliding adjustment at the bottom.

[0012] Preferably, the AC power source is an AC asynchronous motor.

[0013] Preferably, the test bench is also equipped with a cooling mechanism for heat dissipation.

[0014] Preferably, the cooling mechanism includes a first air cooler installed at the AC power source, a second air cooler at the energy recovery mechanism, and a third air cooler and a fourth air cooler at both sides of the AC conversion mechanism.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention recovers the kinetic energy of the output end of the workpiece under test through an energy recovery system, and then converts it through an AC conversion mechanism to output AC power to provide the device for operation. For long-term, high-power test items, such as fatigue tests, it can relatively reduce energy consumption and save test costs. At the same time, a cooling mechanism is installed on the test bench to dissipate heat from the device, so that long-term tests can be carried out in a safe and stable working environment. In addition, adjustable mechanisms such as guide rails can be provided, which can be applied to wheel-side reducers of different models and sizes in actual applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation of the present invention. Obviously, the drawings described below are only some embodiments. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is a schematic diagram of the top view of the structure of an energy feedback wheel reducer testing device of the present invention; Figure 2 It is a left-side structural schematic diagram of an energy feedback wheel-side reducer testing device of the present invention; Figure 3 It is a right view structural schematic diagram of an energy feedback wheel-side reducer testing device of the present invention.

[0018] In the figure: 101, AC power source; 102, first coupling; 103, first torque speed sensor; 104, second coupling; 105, workpiece to be measured; 106, adapter; 107, third coupling; 108, second torque speed sensor; 109, fourth coupling; 201, speed increaser; 202, fifth coupling; 203, DC generator; 204, DC motor; 205, sixth coupling; 206, AC synchronous generator; 207, electric control cabinet; 301, first air cooler; 302, second air cooler; 303, third air cooler; 304, fourth air cooler; 400, test bench; 401, first support frame; 402, guide rail; 403, first support plate; 404, second support plate; 405, fixing block; 406, first support frame; 407, first rack; 408, second rack. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. 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.

[0020] See also Figure 1-3 The present invention provides an energy feedback wheel-side reducer testing device, comprising: a test bench 400, an AC power source 101 installed on the test bench 400, a workpiece 105 to be tested whose input end is transmission-connected to the output shaft of the AC power source 101, an energy recovery mechanism whose input end is transmission-connected to the output end of the workpiece 105 to be tested for energy recovery, and sensor components distributed between the AC power source 101 and the workpiece 105 to be tested and between the workpiece 105 to be tested and the energy recovery mechanism.

[0021] In a specific implementation, the energy recovery mechanism includes: a DC power generation mechanism that is transmission-connected to the workpiece 105 to generate electricity, an electric control cabinet 207 that is electrically connected to the DC power generation mechanism and receives the DC power from the DC power generation mechanism, and an AC conversion mechanism that is electrically connected to the electric control cabinet 207 and takes power. The output three-phase industrial frequency current is fed back to the power supply after passing through a step-up transformer.

[0022] As an advanced explanation: the DC power generation mechanism includes a speed increaser 201 drivingly connected to the workpiece 105 to be measured and a DC generator 203 drivingly connected to the speed increaser 201, and the DC generator 203 is electrically connected to the electric control cabinet 207; The AC conversion mechanism includes a DC motor 204 electrically connected to an electric control cabinet 207 for power supply and an AC synchronous generator 206 drivingly connected to the DC motor 204. The DC motor 204 drives the AC synchronous generator 206 to output a three-phase industrial frequency current.

[0023] The sensor assembly includes a first torque and speed sensor 103 and a second torque and speed sensor 108 .

[0024] It should be noted that the connection relationship between the various components is as follows: The output end of the AC power source 101 is equipped with an input end of a first coupling 102, the output end of the first coupling 102 is connected to a first torque speed sensor 103, the other end of the first torque speed sensor 103 is equipped with a second coupling 104, the output end of the second coupling 104 is connected to the input end of a workpiece 105 to be measured, the output end of the workpiece 105 to be measured is equipped with a transfer fixture 106, the other end of the transfer fixture 106 is connected to the input end of a third coupling 107, the output end of the third coupling 107 is connected to a second torque speed sensor 108, the other end of the second torque speed sensor 108 is connected to the input end of a fourth coupling 109, the output end of the fourth coupling 109 is connected to the input end of a speed increaser 201, the output end of the speed increaser 201 is connected to the input end of a fifth coupling 202, and the input end of a DC generator 203 is connected to the output end of the fifth coupling 202; The output shaft of the DC motor 204 is connected to the input end of the sixth coupling 205 , and the input shaft of the AC synchronous generator 206 is connected to the output end of the sixth coupling 205 .

[0025] The equipment installation frame assembly of each component on the test bench 400 is as follows: The mounting frame assembly includes a first support frame 401 for mounting the AC power source 101 on the test bench 400, two sets of first support plates 403 for mounting the sensor assembly, a second support plate 404 for mounting the workpiece 105 to be measured, a fixing block 405 for mounting the speed increaser 201, a first support frame 406 for mounting the DC generator 203, a first frame 407 for mounting the DC motor 204, and a second frame 408 for mounting the AC synchronous generator 206; The first torque and speed sensor 103 is installed on the first support plate 403 between the AC power source 101 and the workpiece 105 to be measured, and the second torque and speed sensor 108 is installed on the first support plate 403 between the workpiece 105 to be measured and the energy recovery mechanism.

[0026] As a further improvement: the first support plate 403 on which the first torque and speed sensor 103 are mounted and the bottom of the first support frame 401 are also mounted with guide rails 402 for sliding adjustment.

[0027] As a further improvement: a cooling mechanism for heat dissipation is also installed on the test bench 400 .

[0028] The cooling mechanism includes a first air cooler 301 installed at the AC power source 101, a second air cooler 302 at the energy recovery mechanism, and a third air cooler 303 and a fourth air cooler 304 at both sides of the AC conversion mechanism.

[0029] It should be noted that in this embodiment, the AC power source 101 adopts an AC asynchronous motor.

[0030] When using the energy feedback wheel-side reducer testing device, power is output through the AC power source 101. After the workpiece 105 to be tested is connected to the power, the speed and torque output from the output end are increased in speed by the speed increaser 201 and then drive the DC generator 203 to generate electricity. The electric energy output by the DC generator 203 passes through the electric control cabinet 207 and then outputs current to provide rotation for the DC motor 204. The DC motor 204 drives the AC synchronous generator 206 to generate electricity, and the generated AC power is fed back to the power supply side to provide the AC power source 101 for operation.

[0031] During the test, the first air cooler 301, the second air cooler 302, the third air cooler 303 and the fourth air cooler 304 dissipate heat and cool down the entire device, so that the test device is in a safe and stable working environment during the test.

[0032] The first torque and speed sensor 103 is used to measure the speed and torque output by the AC power source 101, and the output power can be calculated, while the second torque and speed sensor 108 is used to measure the output speed and torque of the workpiece 105. The measured data can be connected to the computer through the acquisition circuit to realize data analysis, processing and drawing. The above-mentioned specific measurement, transmission and other methods are existing technologies and are common knowledge known to those skilled in the art, and will not be described in detail here.

[0033] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. An energy feedback wheel reducer testing device, characterized in that: include: test_bench(400); An AC power source (101), the AC power source (101) being installed on the test bench (400); A workpiece to be measured (105), wherein an input end of the workpiece to be measured (105) is drivingly connected to an output shaft of the AC power source (101); An energy recovery mechanism, wherein an input end of the energy recovery mechanism is drivingly connected to an output end of the workpiece (105) to perform energy recovery; and A sensor assembly is distributed between the AC power source (101) and the workpiece (105) to be measured and between the workpiece (105) to be measured and the energy recovery mechanism, and is used to measure output parameters of the AC power source (101) and the workpiece (105) to be measured.

2. The energy feedback wheel reducer testing device according to claim 1 is characterized in that: The energy recovery mechanism comprises: A direct current power generation mechanism, the direct current power generation mechanism being in driving connection with the workpiece (105) to be measured to generate electricity; an electric control cabinet (207), the electric control cabinet (207) being electrically connected to the DC power generation mechanism to receive DC power from the DC power generation mechanism; and An AC conversion mechanism, the AC conversion mechanism is electrically connected to the electric control cabinet (207) to obtain power, and the output three-phase industrial frequency current is fed back to the power supply after passing through a step-up transformer.

3. The energy feedback wheel reducer testing device according to claim 2 is characterized in that: The DC power generation mechanism comprises a speed increaser (201) transmission-connected to the workpiece (105) to be measured and a DC generator (203) transmission-connected to the speed increaser (201), wherein the DC generator (203) is electrically connected to the electric control cabinet (207); The AC conversion mechanism comprises a DC motor (204) for electrically connecting to the electric control cabinet (207) to obtain power and an AC synchronous generator (206) drivingly connected to the DC motor (204), wherein the DC motor (204) drives the AC synchronous generator (206) to output a three-phase industrial frequency current.

4. The energy feedback wheel reducer testing device according to claim 3 is characterized in that: The sensor assembly includes a first torque speed sensor (103) and a second torque speed sensor (108); The output end of the AC power source (101) is provided with an input end of a first coupling (102), the output end of the first coupling (102) is connected to the first torque speed sensor (103), the other end of the first torque speed sensor (103) is provided with a second coupling (104), the output end of the second coupling (104) is connected to the input end of the measured workpiece (105), the output end of the measured workpiece (105) is provided with a transfer fixture (106), the other end of the transfer fixture (106) is connected to a third The input end of the coupling (107), the output end of the third coupling (107) is connected to the second torque speed sensor (108), the other end of the second torque speed sensor (108) is connected to the input end of the fourth coupling (109), the output end of the fourth coupling (109) is connected to the input end of the speed increaser (201), the output end of the speed increaser (201) is connected to the input end of the fifth coupling (202), and the input end of the DC generator (203) is connected to the output end of the fifth coupling (202); The output shaft of the DC motor (204) is connected to the input end of the sixth coupling (205), and the input shaft of the AC synchronous generator (206) is connected to the output end of the sixth coupling (205).

5. The energy feedback wheel reducer testing device according to claim 4 is characterized in that: The test bench (400) is also equipped with an equipment installation frame assembly for installing and fixing the AC power source (101), the workpiece to be tested (105), the energy recovery mechanism, the sensor assembly and the AC conversion mechanism.

6. The energy feedback wheel reducer testing device according to claim 5 is characterized in that: The mounting frame assembly comprises a first support frame (401) provided on the test bench (400) for mounting the AC power source (101), two sets of first support plates (403) for mounting the sensor assembly, a second support plate (404) for mounting the workpiece (105) to be tested, a fixing block (405) for mounting the speed increaser (201), a first support frame (406) for mounting the DC generator (203), a first frame (407) for mounting the DC motor (204), and a second frame (408) for mounting the AC synchronous generator (206); The first torque speed sensor (103) is mounted on the first support plate (403) between the AC power source (101) and the workpiece (105) to be measured, and the second torque speed sensor (108) is mounted on the first support plate (403) between the workpiece (105) to be measured and the energy recovery mechanism.

7. The energy feedback wheel reducer testing device according to claim 6 is characterized in that: The first support plate (403) on which the first torque and speed sensor (103) is mounted and the bottom of the first support frame (401) are also mounted with guide rails (402) for sliding adjustment.

8. The energy feedback wheel reducer testing device according to any one of claims 1 to 7, characterized in that: The AC power source (101) adopts an AC asynchronous motor.

9. The energy feedback wheel reducer testing device according to any one of claims 1 to 7, characterized in that: The test bench (400) is also equipped with a cooling mechanism for heat dissipation.

10. The energy feedback wheel reducer testing device according to claim 9, characterized in that: The cooling mechanism comprises a first air cooler (301) installed at the AC power source (101), a second air cooler (302) at the energy recovery mechanism, and a third air cooler (303) and a fourth air cooler (304) at both sides of the AC conversion mechanism.

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