Reduction gearbox assembly opposite supporting experiment platform

Abstract

The utility model relates to an opposite supporting experiment platform for reduction gearbox assemblies, which belongs to the technical field of fatigue or durability test equipment for the reduction gearbox assemblies, and comprises a test board and two sets of reduction gearbox assemblies arranged on the test board, and the two sets of reduction gearbox assemblies comprise motors arranged on the test board and speed reducers connected with the motors. After the structure is adopted, the oppositely-supporting experiment platform has the following advantages that the oppositely-supporting experiment platform adopts two sets of reduction gearbox assemblies of the same model to be verified at the same time, the working efficiency is improved, the operation is simple, the operation is convenient, the cost is low, and the working efficiency is high. The input ends of the two sets of assemblies are connected in parallel, during working, the two sets of drives are in an opposite supporting state, one set of drive consumes electricity, the other set of drive generates electricity, the electricity is input and used again after being integrated by a controller, and the whole set of system is low in energy consumption; and experiments with specified torque and rotating speed can be stably carried out.

Description

Technical Field

[0001] The utility model relates to the technical field of fatigue or durability test equipment for a reduction gearbox assembly, in particular to a support test platform for a reduction gearbox assembly. Background Art

[0002] With the rapid development of the pure electric vehicle industry, the reducer assembly is an important component of the electric vehicle powertrain, and there are more and more types. The demand for test benches is also increasing, and the requirements are getting higher and higher. Since the 1980s, economy and fuel consumption reduction have been one of the main development goals of automobiles, especially passenger cars. Under the condition of ensuring sufficient stiffness and strength, die-cast aluminum alloy materials, as one of the important lightweight alternative materials, have gradually been promoted and applied. The reducer assembly is an important component of the electric vehicle powertrain, which is related to the power, reliability and economy of the electric vehicle. Therefore, automobile OEMs and parts companies attach great importance to the fatigue test of the reducer assembly.

[0003] At present, most bench tests for the gearbox simulate one of the loads and are mainly used for factory tests. If the existing equipment is used for fatigue testing, there are the following disadvantages: 1. Only one of the loads can be simulated for fatigue testing, and the accuracy of the test results is low. 2. For the newly developed gearbox, the loads in actual working conditions cannot be simulated, resulting in the bench fatigue test not being able to fully expose the design weaknesses. Utility Model Content

[0004] The utility model aims to solve the above technical problems and provides a reduction gearbox assembly support test platform.

[0005] In order to solve the above technical problems, the technical solution provided by the utility model is:

[0006] A reduction gearbox assembly support experimental platform comprises a test bench and two reduction gearbox assemblies mounted on the test bench, the two reduction gearbox assemblies comprising a motor mounted on the test bench and a reducer connected to the motor, the test bench is adjustably mounted with a four-column structure, the output ends of the two reducers are mounted with a first ball cage type transmission shaft and a second ball cage type transmission shaft, a cantilevered pulley structure is connected between the two first ball cage type transmission shafts and between the two second ball cage type transmission shafts, and a synchronous structure for anti-differential is connected to the cantilevered pulley structure.

[0007] Preferably, the four-column structure includes four supporting base plates slidingly connected to the test bench and supporting vertical plates connected to the supporting base plates, a mounting waist hole is provided on the supporting base plate, a slide groove is provided on the inner side of the upper end of the test bench, bolts and nuts are installed in the mounting waist hole and one end of the bolt is located in the slide groove.

[0008] Preferably, a lateral limit device is installed on one side of the supporting base plate, and the lateral limit device includes a mounting plate bolted to the test bench and a fixing plate on the supporting base plate, the mounting plate is installed with a limit plate, the limit plate is threadedly connected with a screw and the screw is against the fixing plate.

[0009] Preferably, the cantilever pulley structure includes four first pulleys installed on the supporting base plate through shafts and bearings, the other ends of the two first ball cage type transmission shafts and the second ball cage type transmission shafts are respectively connected to the first pulleys, and the two first pulleys are connected by belts, and the cantilever pulley structure, the first ball cage type transmission shaft and the second ball cage type transmission shaft form a circular structure.

[0010] Preferably, the synchronous structure comprises two second pulleys mounted on two opposite support base plates via shafts and bearings, a synchronous shaft is mounted between the two second pulleys, and the two second pulleys are respectively connected to the two first pulleys by belts.

[0011] Preferably, a protective shell is bolted to the supporting vertical plate.

[0012] Preferably, a controller bracket is installed on the test bench, and a controller is installed on the controller bracket.

[0013] Preferably, the controller is electrically connected to the motor, and the control mode of the controller is speed loop control or torque loop control.

[0014] After adopting the above structure, the utility model has the following advantages:

[0015] This support test platform uses two sets of the same type of reduction gearbox assemblies for simultaneous verification, which improves work efficiency. The two assemblies are connected in parallel at the input end. When working, the two drives are in a support state, one drive consumes electricity, and the other drive generates electricity. After integration by the controller, the input is re-used, and the energy consumption of the whole system is low; experiments with specified torque and speed can be carried out stably.

[0016] The above summary is for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the utility model will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0019] Figure 2 It is an enlarged view of point A of the utility model;

[0020] Figure 3 It is a schematic diagram of the internal connection of the utility model.

[0021] As shown in the figure: 1. Gearbox assembly; 2. Test bench; 3. Four-column structure; 301. Support base plate; 302. Support vertical plate; 303. Mounting waist hole; 304. Slide groove; 4. First pulley; 5. Synchronous structure; 501. Second pulley; 502. Synchronous shaft; 6. First ball cage type transmission shaft; 7. Second ball cage type transmission shaft; 8. Horizontal limit device; 801. Mounting plate; 802. Fixed plate; 803. Limit plate; 804. Screw; 9. Protective housing; 10. Controller bracket. DETAILED DESCRIPTION

[0022] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0023] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0024] The utility model is further described in detail below in conjunction with the full text.

[0025] Combined with Figure 1-Figure 3A reduction gearbox assembly pairing test platform includes a test bench 2 and two reduction gearbox assemblies 1 installed on the test bench 2. The two reduction gearbox assemblies include a motor installed on the test bench 2 and a reducer connected to the motor. A four-column structure 3 is adjustable and installed on the test bench 2. The output ends of the two reducers are both installed with a first ball cage type transmission shaft 6 and a second ball cage type transmission shaft 7. A cantilever pulley structure is connected between the two first ball cage type transmission shafts 6 and the two second ball cage type transmission shafts 7. A synchronous structure 5 for anti-differential speed is connected to the cantilever pulley structure. This pairing test platform uses two sets of the same type of reduction gearbox assemblies 1 (motor, controller, reducer) to be verified at the same time; the two sets of assemblies are connected in parallel at the input end. When working, the two sets of drives are in a pairing state, one set of drives consumes electricity, and the other set of drives generates electricity. After integration by the controller, they are re-input and used. The energy consumption of the whole system is low; the experiment of the specified torque and speed can be carried out stably.

[0026] Two sets of the same type of reduction gearbox assemblies 1 form a return structure through a cantilever pulley structure, a first ball cage transmission shaft 6 and a second ball cage transmission shaft 7. The effects produced are as follows:

[0027] 1: Two sets of the same type of reduction gearbox assemblies 1 can be verified at the same time to improve verification efficiency;

[0028] 2: Two sets of the same type of reduction gearbox assemblies 1 can be verified at the same time, one set drives power consumption, and the other set drives power generation. After integration by the controller, they are re-input and used, and the energy consumption of the whole system is low;

[0029] 3: Two sets of the same type of reduction gearbox assemblies 1 can be verified at the same time, one set uses speed loop control to keep the experiment at the required speed, and the other set of motors uses torque loop control to keep the experiment at the required torque. The experiment of the specified torque and speed can be carried out stably.

[0030] Specifically, the motor and the reducer are connected to a mounting frame on the test bench 2 through bolts and vibration-damping pads.

[0031] When the utility model is implemented, Figure 1 and Figure 3 As shown, the four-column structure 3 includes four supporting base plates 301 that are slidably connected to the test bench 2 and supporting vertical plates 302 connected to the supporting base plates 301. A mounting waist hole 303 is provided on the supporting base plate 301, and a slide groove 304 is provided on the inner side of the upper end of the test bench 2. Bolts and nuts are installed in the mounting waist hole 303 and one end of the bolt is located in the slide groove 304. Specifically, the bolt can slide in the slide groove 304, and then the supporting base plate 301 can be installed on the test bench 2 through the mounting waist hole 303 and the nut. It can be moved independently to meet the testing of products of different lengths.

[0032] When the utility model is implemented, Figure 1 and Figure 2 As shown, a lateral limiting device 8 is installed on one side of the supporting base plate 301, and the lateral limiting device 8 includes a mounting plate 801 fixed by bolts on the test bench 2 and a fixing plate 802 on the supporting base plate 301, a limiting plate 803 is installed on the mounting plate 801, a screw 804 is threadedly connected to the limiting plate 803 and the screw 804 abuts against the fixing plate 802, a threaded hole for matching the screw 804 is provided on the limiting plate 803, the screw 804 is installed in the threaded hole, and rotates and moves so that the screw 804 approaches the fixing plate 802 and abuts against the fixing plate 802, thereby limiting the lateral position of the supporting base plate 301, and a rotating nut outside the matching screw 804 rotates close to the limiting plate 803, thereby fixing and limiting the screw 804.

[0033] When the utility model is implemented, Figure 3 As shown, the cantilever pulley structure includes four first pulleys 4 installed on the supporting base plate 301 through shafts and bearings, the other ends of the two first ball cage type transmission shafts 6 and the second ball cage type transmission shafts 7 are respectively connected to the first pulleys 4, the two first pulleys 4 are connected by belts, the cantilever pulley structure, the first ball cage type transmission shafts 6 and the second ball cage type transmission shafts 7 form a loop structure, specifically, two sets of the same type of reduction gearbox assemblies 1 (motor, controller, reducer), each set of reducers is connected to the first pulleys 4 through the first ball cage type transmission shaft 6 and the second ball cage type transmission shaft 7, the two first pulleys 4 are connected by belts, the cantilever pulley structure, the first ball cage type transmission shaft 6 and the second ball cage type transmission shaft 7 form a loop structure, the two sets of assemblies are connected in parallel at the input end, and the two sets of drives are in a supporting state when working, one set of drives consumes electricity, and the other set of drives generates electricity, which are integrated by the controller and re-input for use.

[0034] When the utility model is implemented, Figure 3 As shown, the synchronous structure 5 includes two second pulleys 501 installed on two opposite supporting base plates 301 through shafts and bearings, a synchronous shaft 502 is installed between the two second pulleys 501, and the two second pulleys 501 are respectively connected to the two first pulleys 4 with belts. The synchronous structure 5 can ensure that the rotation speeds of the first ball cage transmission shaft 6 and the second ball cage transmission shaft 7 are consistent through the second pulley 501, the first pulley 4 and the synchronous shaft 502, thereby preventing the occurrence of speed difference and inaccurate test results.

[0035] The support plate 302 is bolted with a protective housing 9. Specifically, the protective housing 9 is bolted on the support plate 302 to protect the cantilever pulley structure, the synchronous structure 5, the first ball cage transmission shaft 6 and the second ball cage transmission shaft 7.

[0036] A controller bracket 10 is installed on the test bench 2 , and a controller is installed on the controller bracket 10 .

[0037] The controller is electrically connected to the motor, and a control mode of the controller is speed loop control or torque loop control.

[0038] The working principle of this utility model:

[0039] The motor and reducer of the utility model are connected to the mounting frame on the test bench 2 by bolts and vibration-damping pads. A controller is installed on the controller bracket 10. One set uses a speed loop control to maintain the experiment at the required speed, and the other set of motors uses a torque loop control to maintain the experiment at the required torque. The experiment with the specified torque and speed can be stably carried out.

[0040] The above describes the utility model and its implementation methods, which is not restrictive. What is shown in the full text is only one of the implementation methods of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it, without departing from the purpose of the invention of the utility model, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the utility model.

Claims

1. A reduction gearbox assembly support test platform, comprising a test bench (2) and two reduction gearbox assemblies (1) mounted on the test bench (2), the two reduction gearbox assemblies comprising a motor mounted on the test bench (2) and a reducer connected to the motor, characterized in that: A four-column structure (3) is adjustably mounted on the test bench (2); a first ball cage type transmission shaft (6) and a second ball cage type transmission shaft (7) are mounted on the output ends of the two sets of the reducers; a cantilevered belt pulley structure is connected between the two first ball cage type transmission shafts (6) and between the two second ball cage type transmission shafts (7); and a synchronous structure (5) for preventing differential speed is connected to the cantilevered belt pulley structure.

2. According to claim 1, the reduction gearbox assembly support test platform is characterized in that: The four-column structure (3) comprises four supporting base plates (301) slidably connected to the test bench (2) and supporting upright plates (302) connected to the supporting base plates (301); a mounting waist hole (303) is provided on the supporting base plate (301); a slide groove (304) is provided on the inner side of the upper end of the test bench (2); a bolt and a nut are installed in the mounting waist hole (303), and one end of the bolt is located in the slide groove (304).

3. The reduction gearbox assembly support test platform according to claim 2 is characterized in that: A lateral limiting device (8) is installed on one side of the supporting base plate (301), and the lateral limiting device (8) comprises a mounting plate (801) fixed by bolts on the test bench (2) and a fixing plate (802) on the supporting base plate (301), a limiting plate (803) is installed on the mounting plate (801), a screw rod (804) is threadedly connected to the limiting plate (803), and the screw rod (804) abuts against the fixing plate (802).

4. The reduction gearbox assembly support test platform according to claim 2 is characterized in that: The cantilever pulley structure comprises four first pulleys (4) mounted on a supporting base plate (301) via shafts and bearings, the other ends of two of the first ball cage type transmission shafts (6) and the second ball cage type transmission shaft (7) being respectively connected to the first pulleys (4), the two first pulleys (4) being connected by a belt, and the cantilever pulley structure, the first ball cage type transmission shafts (6) and the second ball cage type transmission shafts (7) forming a loop structure.

5. The reduction gearbox assembly support test platform according to claim 4 is characterized in that: The synchronous structure (5) comprises second pulleys (501) mounted on two opposing support base plates (301) via shafts and bearings, a synchronous shaft (502) being mounted between the two second pulleys (501), and the two second pulleys (501) are respectively connected to the two first pulleys (4) by belts.

6. The reduction gearbox assembly support test platform according to claim 2 is characterized by: A protective housing (9) is bolted to the supporting upright plate (302).

7. The reduction gearbox assembly support test platform according to claim 1 is characterized by: A controller bracket (10) is mounted on the test bench (2), and a controller is mounted on the controller bracket (10).

8. The reduction gearbox assembly support test platform according to claim 7 is characterized in that: The controller is electrically connected to the motor, and the control mode of the controller is speed loop control or torque loop control.

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