Electric drive assembly efficiency test supporting device and installation method thereof

Abstract

The embodiment of the invention provides an electric drive assembly efficiency test supporting device and an installation method thereof.The electric drive assembly efficiency test supporting device comprises an environment control mechanism and a sliding bar supporting and adjusting mechanism, and the environment control mechanism comprises an upper computer, a temperature control unit and an environment bin; the upper computer is used for controlling the temperature control unit to work so as to adjust the temperature and humidity in the environment bin. The sliding lever supporting and adjusting mechanism is arranged in the environment bin. An electric drive assembly sample is installed on the sliding lever supporting and adjusting mechanism. The slide bar supporting and adjusting mechanism comprises an X-axis moving device, a Y-axis moving device and a Z-axis moving device; the environment control mechanism and the environment bin provide a closed space for an electric drive assembly sample, the temperature control unit achieves temperature control in the testing process, meanwhile, the sliding rod supporting and adjusting mechanism is arranged and can be used in cooperation with different testing machine testing tables, free movement and adjustment of the electric drive assembly sample in the X-axis direction, the Y-axis direction and the Z-axis direction are achieved, and the testing efficiency is improved. The centering of the output end of the electric drive assembly sample and the dynamometer is ensured, and the accuracy of the test result is ensured.

Description

Technical Field

[0001] The present application relates to the technical field of electric drive assembly testing, and in particular to an electric drive assembly efficiency testing support device and an installation method thereof. Background Art

[0002] With the rapid development of new energy vehicles, the accuracy requirements for the test results of the electric drive assembly bench test are getting higher and higher. The transmission efficiency test is a high-precision performance test, and the low-temperature efficiency test is a difficult problem in the efficiency test. Therefore, the low-temperature efficiency test device of the electric drive assembly has high-precision requirements. In the test, a 0.1% efficiency improvement requires multiple verification calculations, and the accuracy of the results must be guaranteed. At present, there are few devices for low-temperature efficiency testing of electric drive assemblies. The existing test support devices are all fixed in size, and the temperature control during the low-temperature test cannot be guaranteed. A set of tooling fixtures must be developed for one product, and different test equipment fixtures cannot be used universally. The fixtures have poor universality, and the development cycle of tooling fixtures is long and consumes a lot of funds. Summary of the invention

[0003] The purpose of the embodiments of the present application is to provide an electric drive assembly efficiency test support device and an installation method thereof, so as to solve the problems that existing test support devices are of fixed size, have poor versatility of fixtures, and cannot guarantee temperature control during the test.

[0004] In the first aspect, an embodiment of the present application provides an electric drive assembly efficiency test support device, including: an environmental control mechanism, a slide bar support adjustment mechanism, the environmental control mechanism includes a host computer, a temperature control unit and an environmental chamber, the host computer is used to control the operation of the temperature control unit to adjust the temperature and humidity in the environmental chamber. The slide bar support adjustment mechanism is arranged in the environmental chamber, and an electric drive assembly sample is installed on the slide bar support adjustment mechanism; the slide bar support adjustment mechanism includes an X-axis moving device, a Y-axis moving device and a Z-axis moving device.

[0005] In the above implementation process, the environmental control mechanism and the environmental chamber provide a closed space for the electric drive assembly sample. By setting up a host computer, a temperature control unit and an environmental chamber, temperature control is achieved during the test to ensure that each test condition of the electric drive assembly sample is within the test conditions. At the same time, a sliding rod support adjustment mechanism is provided, which can be used in conjunction with different test machine test benches to achieve free movement and adjustment of the electric drive assembly sample in three directions of X-axis, Y-axis and Z-axis, thereby ensuring the alignment of the output end of the electric drive assembly sample with the dynamometer and the accuracy of the test results.

[0006] Furthermore, the environmental chamber includes an environmental chamber body and an environmental chamber cover arranged on the environmental chamber body, the environmental chamber body is provided with an environmental chamber door, an air inlet, a return air outlet and an output shaft hole of an electric drive assembly, and the air inlet and the return air outlet are connected to the temperature control unit.

[0007] In the above implementation process, an environmental chamber is set up to house the electric drive assembly samples. At the same time, the temperature in the environmental chamber can be controlled to ensure the accuracy of the test results.

[0008] Furthermore, the X-axis moving device includes a first sliding rod, a first T-shaped block and a suspension bracket, the upper end of the first sliding rod is provided with a first groove, the bottom of the suspension bracket is provided with a cross-shaped hole, and the upper end of the first T-shaped block passes through the first groove and is connected to the cross-shaped hole.

[0009] In the above implementation process, the electric drive assembly sample is freely moved and adjusted in the X-axis direction.

[0010] Furthermore, the Y-axis moving device includes a screw rod, a second sliding rod and a second T-shaped block, the upper end of the second sliding rod is provided with a second groove, the bottom of the first sliding rod is provided with a first threaded hole, the top of the second T-shaped block is provided with a second threaded hole, one end of the screw rod is connected to the first threaded hole, and the other end of the screw rod passes through the second groove and is connected to the second threaded hole.

[0011] In the above implementation process, the electric drive assembly sample is freely moved and adjusted in the Y-axis direction.

[0012] Furthermore, the Z-axis moving device includes a base, a supporting square column, a supporting elephant leg and a power device; the second sliding rod is connected to the supporting square column by bolts, the supporting square column is threadedly connected to the supporting elephant leg, the supporting elephant leg and the power device are arranged on the base, and the power device is used to drive the supporting square column.

[0013] In the above implementation process, the electric drive assembly sample is freely moved and adjusted in the Z-axis direction.

[0014] Furthermore, the power device includes a power motor, a support screw, a transmission worm and a transmission turbine. The support square column includes a first support square column and a second support square column. The base is provided with a concave circle that cooperates to limit the support screw. The transmission turbine is arranged at the bottom of the support screw and is interference-connected with the support screw. The transmission worm and the transmission turbine cooperate to form a turbine group. One end of the transmission worm is connected to the power motor. The first support square column is clearance-matched with the base. The support screw passes through the first support square column from the base and is threadedly connected to the second support square column.

[0015] In the above implementation process, the electric drive assembly sample is freely moved and adjusted in the Z-axis direction.

[0016] In a second aspect, an embodiment of the present application provides an installation method of an electric drive assembly efficiency test support device, which is applied to the electric drive assembly efficiency test support device as described above, including:

[0017] Place four supporting legs, perform initial height adjustment on the four supporting legs, and install a connecting sleeve between every two supporting legs;

[0018] The environmental bin body is hoisted by the overhead crane, so that the opening at the bottom of the environmental bin matches with the supporting legs, the two second slide bars are connected to the bolt holes of the supporting square column at the upper end of the supporting legs, and the two first slide bars are installed in parallel to the upper ends of the two second slide bars at the bottom using bolts and the second T-shaped block to form a quadrilateral;

[0019] Use bolts to pass through the cross-shaped holes of the suspension bracket and the first slide bar and connect to the first T-shaped block to install the suspension bracket on the first slide bar, and install the other two suspension brackets;

[0020] Use the pressure plate and connecting bolts to fix the four supporting elephant leg bases on the iron floor, use the overhead crane to hoist the electric drive assembly sample to the corresponding connection hole position of the suspension bracket, and use bolts to install the electric drive assembly sample on the suspension bracket;

[0021] Start the power motor, adjust the height of the four supporting square columns up and down, adjust the suspension bracket, the first slide bar and the second slide bar, and fix the suspension bracket bolts, the first slide bar bolts and the sample connection bolts;

[0022] Install the upper cover of the environmental chamber, seal the copper holes on the environmental chamber body, connect the inlet and outlet air ducts on the environmental chamber body to the temperature control unit, and check the connecting bolts and the reset button of the test bench.

[0023] Further, the adjusting the suspension bracket, the first slide bar and the second slide bar, fixing the suspension bracket bolt, the first slide bar bolt and the sample connecting bolt, comprises:

[0024] Adjust the suspension bracket in the X-axis direction to move the suspension bracket on the first slide bar, and adjust the two first slide bars in the Y-axis direction to move the first slide bar on the second slide bar. By moving the suspension bracket in the X-axis direction and the first slide bar in the Y-axis direction, the electric drive assembly sample is adjusted in the X-axis and Y-axis directions, so that the output end of the electric drive assembly sample is aligned with the output end of the dynamometer bench on both sides, ensuring that the output shaft is horizontally zero degrees, and fix the suspension bracket bolts, the first slide bar bolts and the sample connecting bolts.

[0025] Furthermore, after starting the power motor, adjusting the height of the four supporting square columns up and down, adjusting the suspension bracket, the first slide bar and the second slide bar, and fixing the suspension bracket bolts, the first slide bar bolts and the sample connection bolts, it also includes:

[0026] Determine the free length value of the output shaft according to the output shaft model used, move the dynamometer stand horizontally in the X-axis direction, stop adjusting after the output shaft free length value of the dynamometer stand is reached, and fix the output dynamometer to the iron floor; adjust the dynamometer stand on the other side horizontally in the X-axis direction, stop adjusting after the output shaft of the dynamometer stand on the other side reaches the free length value, and fix the dynamometer stand.

[0027] Furthermore, the starting power motor adjusts the height of the four supporting square columns up and down, including:

[0028] Start the power motor and adjust the height of the four supporting square columns up and down so that the distance from the midpoint of the output end of the electric drive assembly sample to the iron floor is equal to the distance from the midpoint of the output end of the test equipment to the iron floor. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 It is a structural schematic diagram of an electric drive assembly efficiency test support device provided in an embodiment of the present application;

[0031] Figure 2 It is a structural schematic diagram of a slide bar support adjustment mechanism of an electric drive assembly efficiency test support device provided in an embodiment of the present application;

[0032] Figure 3 This is a schematic diagram of a supporting elephant leg structure of an electric drive assembly efficiency test support device provided in an embodiment of the present application;

[0033] Among them, 10, environmental chamber upper cover; 20, environmental chamber door; 30, electric drive assembly output shaft hole; 40, return air port; 50, air inlet; 60, slide bar support adjustment mechanism; 70, environmental chamber support adjustment leg; 110, suspension bracket; 120, first slide bar; 130, second slide bar; 140, support elephant leg; 150, second T-shaped block; 160, power motor; 170, connecting sleeve; 180, first T-shaped block; 141, second support square column; 142, first support square column; 143, base; 144, support screw; 145, transmission turbine. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0035] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. At the same time, in the description of this application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0036] Please see Figure 1 , Figure 2 and Figure 3 , Figure 1 A schematic diagram of the structure of an electric drive assembly efficiency test support device provided in an embodiment of the present application. The electric drive assembly efficiency test support device includes: an environmental control mechanism, a slide bar support adjustment mechanism 60, the environmental control mechanism includes a host computer, a temperature control unit and an environmental chamber, the host computer is used to control the temperature control unit to adjust the temperature and humidity in the environmental chamber, the slide bar support adjustment mechanism 60 is arranged in the environmental chamber, and an electric drive assembly sample is installed on the slide bar support adjustment mechanism 60; the slide bar support adjustment mechanism 60 includes an X-axis moving device, a Y-axis moving device and a Z-axis moving device.

[0037] As mentioned above, the environmental control mechanism and the environmental chamber provide a closed space for the electric drive assembly sample. By setting up a host computer, a temperature control unit and an environmental chamber, temperature control is achieved during the test to ensure that each test condition of the electric drive assembly sample is within the test conditions. At the same time, a sliding rod support adjustment mechanism is set, which can be used in conjunction with different test machine test benches to achieve free movement and adjustment of the electric drive assembly sample in three directions of X-axis, Y-axis and Z-axis, ensuring the alignment of the output end of the electric drive assembly sample with the dynamometer and ensuring the accuracy of the test results.

[0038] In some embodiments, the environmental chamber includes an environmental chamber body and an environmental chamber cover 10 arranged on the environmental chamber body, the environmental chamber body is provided with an environmental chamber door 20, an air inlet 50, a return air outlet 40 and an electric drive assembly output shaft hole 30, and the air inlet 50 and the return air outlet 40 are connected to the temperature control unit; specifically, an environmental chamber is set up to place the electric drive assembly samples, and at the same time, the temperature in the environmental chamber can be controlled to ensure the accuracy of the test results.

[0039] Optionally, it also includes a host computer touch screen. The host computer touch screen realizes information exchange with the temperature control unit and the host computer through Ethernet. The temperature control unit circulates cold air through the air duct to make the environmental chamber box reach the set ambient temperature and humidity, meet the external environmental conditions required for the test, and the lowest temperature can reach minus 45 degrees Celsius. It can be understood that the setting positions of the host computer touch screen and the host computer can be set according to the specific situation.

[0040] Optionally, the environmental chamber further includes environmental chamber support adjustment legs 70 for supporting the environmental chamber and adjusting the height of the environmental chamber and the ground.

[0041] In some embodiments, the X-axis moving device includes a first sliding bar 120, a first T-shaped block 180 and a suspension bracket 110, the upper end of the first sliding bar 120 is provided with a first groove, the bottom of the suspension bracket 110 is provided with a cross-shaped hole, and the upper end of the first T-shaped block 180 passes through the first groove and is connected to the cross-shaped hole; the free movement and adjustment of the electric drive assembly sample in the X-axis direction is realized.

[0042] In some embodiments, the Y-axis moving device includes a screw, a second sliding rod 130 and a second T-block 150, the upper end of the second sliding rod 130 is provided with a second groove, the bottom of the first sliding rod 120 is provided with a first threaded hole, and the top of the second T-block 150 is provided with a second threaded hole, one end of the screw is connected to the first threaded hole, and the other end of the screw passes through the second groove and is connected to the second threaded hole; the free movement and adjustment of the electric drive assembly sample in the Y-axis direction is realized.

[0043] In some embodiments, the Z-axis moving device includes a base 143, a supporting square column, a supporting elephant leg 140 and a power device; the second sliding rod 130 is connected to the supporting square column by bolts, the supporting square column is threadedly connected to the supporting elephant leg 140, the supporting elephant leg 140 and the power device are arranged on the base 143, and the power device is used to drive the supporting square column; the free movement and adjustment of the electric drive assembly sample in the Z-axis direction is realized.

[0044] In some embodiments, the power device includes a power motor 160, a support screw 144, a transmission worm and a transmission turbine 145. The support square column includes a first support square column 142 and a second support square column 141. The base 143 is provided with a concave circle that cooperates to limit the support screw 144. The transmission turbine 145 is arranged at the bottom of the support screw 144 and is interference connected with the support screw 144. The transmission worm and the transmission turbine 145 cooperate to form a turbine group. One end of the transmission worm is connected to the power motor 160. The first support square column 142 is clearance-matched with the base 143. The support screw 144 passes through the first support square column 142 from the base 143 and is threadedly connected with the second support square column 141; the free movement and adjustment of the electric drive assembly sample in the Z-axis direction is realized.

[0045] Exemplarily, the slide bar support adjustment mechanism 60 provides a stable and adjustable support device for the electric drive assembly sample, ensuring that the sample reaches the actual vehicle installation angle and that the output shaft of the sample is horizontally in the designed free length state. The suspension bracket 110 passes through the cross-shaped hole of the suspension bracket 110 through a long screw and is connected to the bolt hole of the electric drive assembly. The electric drive assembly is supported and fixed by three suspension brackets 110. The bottom plate of the suspension bracket 110 is a cross-shaped hole, so that the suspension bracket 110 can be rotated 90° to adapt to different sample adjustment hole positions. The suspension bracket 110 passes through the first groove of the first slide bar through the screw and is connected to the first T-block 180, thereby realizing the movement and adjustment of the suspension bracket 110 in the X-axis direction of the first slide bar; the screw passes through the second groove of the second slide bar from the bolt hole of the first slide bar and is connected to the connecting thread of the second T-block 150, thereby realizing the movement of the first slide bar in the horizontal direction of the Y-axis of the second slide bar. The second slide bar is connected to the supporting square column by bolts, and the supporting square column is threadedly connected to the supporting elephant leg 140. The supporting square column has an electric linkage adjustment function and can be lifted up and down. The supporting square column drives the first groove slide bar and the electric drive assembly sample at the upper end to move up and down, realizing the movement of the sample in the Z-axis direction, satisfying the movement and adjustment of the sample in the X-axis, Y-axis and Z-axis directions.

[0046] Exemplarily, in the power device, the power motor 160 is started to drive the transmission worm, the transmission worm drives the transmission turbine 145 to rotate, the transmission turbine 145 drives the support screw to rotate, the first support square column 142 guided by the base 143 cannot rotate, and the support screw 144 rotates to drive the second support square column 141 at the upper end to move up and down through the threaded transmission, thereby completing the up and down movement adjustment of the test support device.

[0047] Exemplarily, four supporting elephant legs 140 are provided, and correspondingly, four bases 143 and four supporting square columns are provided. Optionally, every two supporting pillars share a power motor 160, that is, two adjacent supporting pillars are connected by a connecting sleeve 170, so that each supporting pillar drives a transmission worm through the driving force of the power motor 160, and the transmission worm drives the transmission turbine 145 to rotate, and the transmission turbine 145 drives the supporting screw to rotate, thereby realizing the up and down movement of the four supporting pillars in the Z-axis direction.

[0048] As mentioned above, the efficiency test support device in the embodiment of the present application can realize movement and adjustment in three directions of X-axis, Y-axis and Z-axis to ensure the horizontal alignment of the output shaft; the efficiency test support device in the embodiment of the present application, the three suspension brackets 110 can be freely moved and adjusted to adapt to the installation and adjustment testing requirements of different electric drive assembly products.

[0049] In the second aspect, based on the above embodiment, the embodiment of the present application also provides a method for installing a support device for testing the efficiency of an electric drive assembly. The method for installing a support device for testing the efficiency of an electric drive assembly provided in this embodiment specifically includes:

[0050] 100. Place the four supporting legs, perform initial height adjustment on the four supporting legs, and install a connecting sleeve between every two supporting legs.

[0051] Specifically, the four supporting elephant legs are placed on the iron floor and in the middle of the dynamometers on both sides for easy installation and adjustment. The four supporting elephant legs are initially adjusted in height to ensure that the heights of the four supporting elephant legs are consistent. A connecting sleeve is installed between the two supporting elephant legs to transmit power for the linkage adjustment of the height of the supporting elephant legs.

[0052] 200. Use an overhead crane to hoist the environmental bin body so that the opening at the bottom of the environmental bin matches the supporting legs, connect the two second slide bars to the bolt holes of the supporting square column at the upper end of the supporting legs, and use bolts and a second T-shaped block to install the two first slide bars in parallel to the upper ends of the two second slide bars at the bottom to form a quadrilateral.

[0053] Specifically, use a crane to hoist the environmental chamber body, so that the bottom opening of the environmental chamber matches the supporting legs, and connect the two second slide bars to the supporting square columns at the upper ends of the supporting legs. Figure 1 and Figure 2 As shown, bolts and a second T-shaped block are further used to parallelly install the two first sliding bars on the upper ends of the two second sliding bars at the bottom to form a quadrilateral.

[0054] 300. Use bolts to pass through the cross-shaped holes of the suspension bracket and the first slide bar and connect to the first T-shaped block to install the suspension bracket on the first slide bar, and install the other two suspension brackets.

[0055] Specifically, a bolt is used to pass through the cross-shaped hole of the suspension bracket and the first groove of the first slide bar and connected to the first T-shaped block to install the suspension bracket on the first slide bar. Similarly, the other two suspension brackets are installed on another first slide bar, so that the three suspension brackets form a triangle. Figure 2 As shown, there are three installation and connection holes corresponding to the electric drive assembly sample.

[0056] 400. Use pressure plates and connecting bolts to fix the four supporting elephant leg bases on the iron floor, use the overhead crane to hoist the electric drive assembly sample to the corresponding connection holes of the suspension bracket, and use bolts to install the electric drive assembly sample on the suspension bracket.

[0057] 500. Start the power motor, adjust the height of the four supporting square columns up and down, adjust the suspension bracket, the first slide bar and the second slide bar, and fix the suspension bracket bolts, the first slide bar bolts and the sample connection bolts.

[0058] 600. Install the upper cover of the environmental chamber, seal the copper holes on the environmental chamber body, connect the inlet and outlet air ducts on the environmental chamber body to the temperature control unit, and check the connecting bolts and the reset button of the test bench.

[0059] In some embodiments, the method of adjusting the suspension bracket, the first slide bar and the second slide bar, and fixing the suspension bracket bolt, the first slide bar bolt and the sample connection bolt comprises:

[0060] Adjust the suspension bracket in the X-axis direction to move the suspension bracket on the first slide bar, and adjust the two first slide bars in the Y-axis direction to move the first slide bar on the second slide bar. By moving the suspension bracket in the X-axis direction and the first slide bar in the Y-axis direction, the electric drive assembly sample is adjusted in the X-axis and Y-axis directions, so that the output end of the electric drive assembly sample is aligned with the output end of the dynamometer bench on both sides, ensuring that the output shaft is horizontally zero degrees, and fix the suspension bracket bolts, the first slide bar bolts and the sample connecting bolts.

[0061] In some embodiments, after starting the power motor, adjusting the height of the four supporting square columns up and down, adjusting the suspension bracket, the first slide bar and the second slide bar, and fixing the suspension bracket bolts, the first slide bar bolts and the sample connection bolts, the method further includes:

[0062] Determine the free length value of the output shaft according to the output shaft model used, by moving the dynamometer stand horizontally in the X-axis direction, stop adjusting after the output shaft free length value of the dynamometer stand is reached, and fix the output dynamometer to the iron floor; move the dynamometer stand on the other side horizontally in the X-axis direction, stop adjusting after the output shaft of the dynamometer stand on the other side reaches the free length value, and fix the dynamometer stand, so that the output shafts on both sides are horizontal and in the free length state.

[0063] In some embodiments, the starting power motor adjusts the height of the four supporting square pillars up and down, including:

[0064] Start the power motor and adjust the height of the four supporting square columns up and down so that the distance from the midpoint of the output end of the electric drive assembly sample to the iron floor is equal to the distance from the midpoint of the output end of the test equipment to the iron floor.

[0065] Optionally, the distance from the midpoint of the output end of the electric drive assembly sample to the iron floor is 750 mm, ensuring that the output shaft is horizontal in the Z direction.

[0066] The above steps are not to be performed in a strict order as described in the numbers, but should be understood as an overall solution.

[0067] The electric drive assembly efficiency test support device provided in the embodiment of the present application can be used to execute the electric drive assembly efficiency test support device installation method provided in the above embodiment, and has corresponding functions and beneficial effects.

[0068] In several embodiments provided in the present application, it should be understood that the disclosed devices and methods can also be implemented in other ways. The device embodiments described above are merely schematic. For example, the flowcharts and block diagrams in the accompanying drawings show the possible architecture, functions and operations of the devices, methods and computer program products according to multiple embodiments of the present application. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a part of a code, and the module, a program segment or a part of a code contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flowchart, and the combination of boxes in the block diagram and / or flowchart can be implemented with a dedicated hardware-based system that performs a specified function or action, or can be implemented with a combination of dedicated hardware and computer instructions.

[0069] In addition, the functional modules in the various embodiments of the present application may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.

[0070] If the function is implemented in the form of a software function module and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium, including several instructions for an electronic device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0071] The above description is only an embodiment of the present application and is not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0072] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

[0073] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

Claims

1. An electric drive assembly efficiency test support device, characterized in that: include: An environmental control mechanism and a slide bar support adjustment mechanism, wherein the environmental control mechanism includes a host computer, a temperature control unit and an environmental chamber, wherein the host computer is used to control the operation of the temperature control unit to adjust the temperature and humidity in the environmental chamber. The slide bar support adjustment mechanism is arranged in the environmental chamber, and an electric drive assembly sample is installed on the slide bar support adjustment mechanism; the slide bar support adjustment mechanism includes an X-axis moving device, a Y-axis moving device and a Z-axis moving device.

2. The electric drive assembly efficiency test support device according to claim 1, characterized in that: The environmental chamber includes an environmental chamber body and an environmental chamber upper cover arranged on the environmental chamber body. The environmental chamber body is provided with an environmental chamber door, an air inlet, an air return outlet and an output shaft hole of an electric drive assembly. The air inlet and the air return outlet are connected to the temperature control unit.

3. The electric drive assembly efficiency test support device according to claim 1, characterized in that: The X-axis moving device includes a first sliding rod, a first T-shaped block and a suspension bracket, the upper end of the first sliding rod is provided with a first groove, the bottom of the suspension bracket is provided with a cross-shaped hole, and the upper end of the first T-shaped block passes through the first groove and is connected to the cross-shaped hole.

4. The electric drive assembly efficiency test support device according to claim 3, characterized in that: The Y-axis moving device includes a screw rod, a second sliding rod and a second T-shaped block, the upper end of the second sliding rod is provided with a second groove, the bottom of the first sliding rod is provided with a first threaded hole, the top of the second T-shaped block is provided with a second threaded hole, one end of the screw rod is connected to the first threaded hole, and the other end of the screw rod passes through the second groove and is connected to the second threaded hole.

5. The electric drive assembly efficiency test support device according to claim 4, characterized in that: The Z-axis moving device includes a base, a supporting square column, a supporting elephant leg and a power device; the second sliding rod is connected to the supporting square column by bolts, the supporting square column is threadedly connected to the supporting elephant leg, the supporting elephant leg and the power device are arranged on the base, and the power device is used to drive the supporting square column.

6. The electric drive assembly efficiency test support device according to claim 5, characterized in that: The power device includes a power motor, a support screw, a transmission worm and a transmission turbine. The support square column includes a first support square column and a second support square column. The base is provided with a concave circle that matches and limits the support screw. The transmission turbine is arranged at the bottom of the support screw and is interference-connected with the support screw. The transmission worm and the transmission turbine cooperate to form a turbine group. One end of the transmission worm is connected to the power motor. The first support square column is clearance-matched with the base. The support screw passes through the first support square column from the base and is threadedly connected with the second support square column.

7. A method for installing an electric drive assembly efficiency test support device, applied to the electric drive assembly efficiency test support device according to any one of claims 1 to 6, characterized in that: include: Place four supporting legs, perform initial height adjustment on the four supporting legs, and install a connecting sleeve between every two supporting legs; The environmental bin body is hoisted by the overhead crane, so that the opening at the bottom of the environmental bin matches with the supporting legs, the two second slide bars are connected to the bolt holes of the supporting square column at the upper end of the supporting legs, and the two first slide bars are installed in parallel to the upper ends of the two second slide bars at the bottom using bolts and the second T-shaped block to form a quadrilateral; Use bolts to pass through the cross-shaped holes of the suspension bracket and the first slide bar and connect to the first T-shaped block to install the suspension bracket on the first slide bar, and install the other two suspension brackets; Use the pressure plate and connecting bolts to fix the four supporting elephant leg bases on the iron floor, use the overhead crane to hoist the electric drive assembly sample to the corresponding connection hole position of the suspension bracket, and use bolts to install the electric drive assembly sample on the suspension bracket; Start the power motor, adjust the height of the four supporting square columns up and down, adjust the suspension bracket, the first slide bar and the second slide bar, and fix the suspension bracket bolts, the first slide bar bolts and the sample connection bolts; Install the upper cover of the environmental chamber, seal the copper holes on the environmental chamber body, connect the inlet and outlet air ducts on the environmental chamber body to the temperature control unit, and check the connecting bolts and the reset button of the test bench.

8. The method for installing the electric drive assembly efficiency test support device according to claim 7, characterized in that: The method of adjusting the suspension bracket, the first slide bar and the second slide bar, and fixing the suspension bracket bolt, the first slide bar bolt and the sample connecting bolt comprises: Adjust the suspension bracket in the X-axis direction to move the suspension bracket on the first slide bar, and adjust the two first slide bars in the Y-axis direction to move the first slide bar on the second slide bar. By moving the suspension bracket in the X-axis direction and the first slide bar in the Y-axis direction, the electric drive assembly sample is adjusted in the X-axis and Y-axis directions, so that the output end of the electric drive assembly sample is aligned with the output end of the dynamometer bench on both sides, ensuring that the output shaft is horizontal at zero degrees, and fix the suspension bracket bolts, the first slide bar bolts and the sample connecting bolts.

9. The method for installing the electric drive assembly efficiency test support device according to claim 7, characterized in that: After starting the power motor, adjusting the height of the four supporting square columns up and down, adjusting the suspension bracket, the first slide bar and the second slide bar, and fixing the suspension bracket bolts, the first slide bar bolts and the sample connection bolts, the method further includes: Determine the free length value of the output shaft according to the output shaft model used, move the dynamometer stand horizontally in the X-axis direction, stop adjusting after the output shaft free length value of the dynamometer stand is reached, and fix the output dynamometer to the iron floor; adjust the dynamometer stand on the other side horizontally in the X-axis direction, stop adjusting after the output shaft of the dynamometer stand on the other side reaches the free length value, and fix the dynamometer stand.

10. The method for installing the electric drive assembly efficiency test support device according to claim 7, characterized in that: The starting power motor adjusts the height of the four supporting square columns up and down, including: Start the power motor and adjust the height of the four supporting square columns up and down so that the distance from the midpoint of the output end of the electric drive assembly sample to the iron floor is equal to the distance from the midpoint of the output end of the test equipment to the iron floor.

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