CN116593740A - New forms of energy motor testboard - Google Patents

Abstract

The invention discloses a new energy motor test board, which relates to the technical field of motor test and comprises the following components: the device comprises a sliding guide rail, a combined I-beam bracket, an adapter plate, a motor vertical lifting adjusting device, a accompany measuring motor assembly, a measured motor, a dynamic torque sensor and a measured motor special fixture; the tested motor is slidably fixed above the sliding guide rail through the vertical lifting adjusting device and the special motor clamp, the motor clamp is of an inverted triangle structure to prevent the central axis of the motor shaft from deviating, and the motor can be coaxially installed only by adjusting the vertical lifting adjusting device after being fixed. Compared with the traditional mounting mode of motor flange face screw fixation, the tested motor does not need external force to support to realize clamping, the risk that the motor falls is avoided, the motor clamp adapts to the motor with a plurality of types in a wider diameter range, and quick clamping can be realized by adjusting the lifting height. Meanwhile, the combined I-beam and the adapter plate can conveniently realize adjustment of different size requirements, and the universality of the test board is improved.

Description

A new energy motor test bench

technical field

The invention relates to the technical field of motor testing, in particular to a new energy motor testing platform.

Background technique

With the vigorous development of new energy technology and new energy vehicles, and people's attention to the pollution of traditional fuel vehicles, the market share of new energy vehicles will continue to rise. The rapid development of new energy vehicles is inseparable from the efficient and energy-saving development and utilization of various motors, including the development of vehicle drive motors, cooling water pump motors, power steering motors, and brake power motors. Various types of motors have covered the important components and core safety components of new energy vehicles. The development of corresponding motors requires a variety of parameter testing, such as: flux linkage, back electromotive force, output external characteristics, load characteristics, etc. The existing motor test platform is generally used to fix the flange surface of the motor. It takes a long time to loosen multiple bolts to remove the motor under test. The installation process is also time-consuming and laborious. The disassembly process requires external force to support the motor. fall. For different types of motors, it is necessary to customize the bracket according to the size of the motor flange surface to ensure better coaxiality of the motor shaft, which has poor versatility and high cost of the test device.

Contents of the invention

In view of the problems existing in the prior art, the purpose of the present invention is to provide a new energy motor test bench, which is used to improve the simplicity and safety of motor clamping, and at the same time realize universal clamping of motors within a wide diameter range.

The technical scheme that the present invention adopts is as follows:

A new energy motor test bench, including a test counter and a test device, the test device is arranged on the test counter, it is characterized in that the test device includes a sliding guide rail, a sensor combined I-beam bracket, and an accompanying test motor Assembly combined I-beam support, motor vertical lifting adjustment device, accompanying test motor assembly, tested motor, dynamic torque sensor and special fixture for the tested motor; said motor vertical lifting adjustment device, sensor combined I-beam support 1. The combined I-beam bracket of the accompanying test motor assembly is set on the sliding guide rail in turn, the motor under test is set on the vertical lifting adjustment device of the motor through the special fixture for the motor under test, and the dynamic torque sensor is set on the sensor combined work On the word beam support, the accompanying test motor assembly is arranged on the combined I-beam support of the accompanying test motor assembly, and the motor under test and the dynamic torque sensor as well as the test motor assembly and the dynamic torque sensor are respectively connected by elastic Coupling drive connection.

Further, the top surface of the test counter is provided with a stainless steel metal plate, and the stainless steel metal plate is provided with double rows of through holes for piercing T-shaped screws, and the bottom of the test counter is provided with lockable universal wheels. The test device is set on the test counter.

Further, a number of T-screws are provided on both sides of the sliding guide rail, and are fixed on the test counter by T-screws.

Further, the sensor combined I-beam bracket includes an upper cover plate a, a support beam a, a lower cover plate a and fastening screws a, and a screw head counterbore is provided in the middle part of the top of the upper cover plate a, and the Screw holes are provided on both sides of the upper cover plate a, screw holes are respectively provided in the top and bottom middle parts of the support beam a, screw head counterbore holes are provided in the bottom middle part of the lower cover plate a, and the two sides of the lower cover plate a There are through holes on the side.

Further, the combined I-beam bracket of the accompanying test motor assembly includes an upper cover plate b, a supporting beam b, a lower cover plate b and fastening screws b, and a screw head b holes, screw holes are provided on both sides of the upper cover plate b, screw holes are provided in the middle part of the top and bottom of the support beam b, screw holes are provided in the middle part of the bottom of the lower cover plate b, and counterbore holes are provided in the middle part of the bottom of the lower cover plate b. There are through holes on both sides of the cover plate b.

Further, the special fixture for the motor under test includes a clamping base, a clamping arched seat and clamping screws, the clamping base is provided with an inverted triangular clamping groove; the clamping arched seat is provided with a piercing clip Screw holes for holding screws, the upper part of the clamping arched seat is semicircular, the lower part of the clamping arched seat is square, the two sides of the bottom of the clamping arched seat are provided with clamping ears, and the clamping ears are set With clamping plane.

Further, the motor vertical lifting adjustment device includes an upper cover, an X-shaped lifting bracket, a push screw, a knob and a lower cover; the left side of the bottom surface of the upper cover is provided with a square chute, and the two sides of the square chute Each is provided with a screw hole for piercing a propulsion screw, and the right side of the bottom surface of the upper cover plate is provided with a shaft sleeve for piercing a rotating shaft on both sides of the short side, and the two shaft sleeves are concentrically arranged; the X-shaped The lifting bracket includes a left lifting bracket and a right lifting bracket. The center of the left lifting bracket and the right lifting bracket is provided with a through hole for piercing the rotating shaft. The through hole of the rotating shaft, the bottom right of the right elevating bracket and the upper left end of the bracket are each provided with a through hole for piercing the rotating shaft, and the through holes are all provided with a rotating shaft; the upper left of the right elevating bracket is provided with a rotating shaft. Limiting nuts are provided at both ends of the rotating shaft, a square slider is fixed in the middle of the rotating shaft, a knob is provided at the end of the pushing screw, and the pushing screw is co-located on the square sliding block; the top surface of the lower cover plate The left side is provided with a square chute, and the right side of the top surface of the lower cover is provided with bushings for passing through the rotating shaft on both sides of the short side, and the two bushings are arranged concentrically.

Further, the top of the motor vertical lift adjustment device is provided with an upper adapter plate, which is connected to the special fixture of the motor under test through the upper adapter plate, and the bottom of the vertical lift adjustment device is provided with a lower adapter plate, through which the The lower adapter plate is connected with the sliding guide rail.

The present invention has following advantage or beneficial effect:

The motor under test of the new energy motor test bench of the present invention is slid and fixed above the sliding guide rail through the vertical lifting adjustment device and the special motor fixture. The motor fixture uses an inverted triangle structure to prevent the central axis of the motor shaft from deviating. After the motor is fixed, it only needs to be adjusted by adjusting the vertical lift. The device can be installed coaxially; the motor under test can be clamped without external force support to avoid the risk of motor falling. The motor clamp is suitable for multiple types of motors with a wide diameter range, and quick clamping can be realized by adjusting the lifting height; at the same time, The combined I-beam and adapter plate can facilitate the adjustment of different size requirements and improve the versatility of the test bench.

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram of the new energy motor test bench of the present invention;

Fig. 2 is a front view of the overall layout of the new energy motor test bench of the present invention;

Fig. 3 is a clamping schematic diagram of the special fixture for the tested motor of the new energy motor test bench of the present invention;

Fig. 4 is an exploded view of the sensor combined I-beam bracket of the new energy motor test bench of the present invention;

Fig. 5 is an exploded view of the combined I-beam bracket of the accompanying test motor assembly of the new energy motor test bench of the present invention;

Fig. 6 is an exploded view of the special fixture for the tested motor of the new energy motor test bench of the present invention;

Fig. 7 is an exploded view of the motor vertical lift adjustment device of the new energy motor test bench of the present invention;

In the figure: 1. Motor vertical lifting adjustment device; 2. Elastic coupling; 3. Dynamic torque sensor; 4. Accompanying test motor assembly; 5. Tested motor; 6. Slide guide rail; 7. Sensor combined type Beam bracket; 8. Accompanying test motor assembly combined I-beam bracket; 9. T-shaped screw; 10. Lower adapter plate; 11. Upper adapter plate; 12. Rotary handle; 13. Inverted triangle clamping groove; 14. Special fixture for the motor under test; 15. Clamping screw; 16. Rubber pad; 17. Test counter; 18. Lockable universal wheels; 19. Upper cover plate a; 20. Support beam a; 21. Lower cover Plate a; 23, upper cover plate b; 24, support beam b; 25, lower cover plate b; 26, fastening screw b; 27, fastening screw a; 29, toothed nut; 30, locking screw; 31 , screw hole a; 32, through hole a; 33, through hole b; 34, screw hole b; 35, clamping ear upper plane; 36, clamping ear lower plane; 37, screw hole c; 38, screw head sink Hole a; 39, screw head counterbore b; 40, screw hole d; 41, through hole c; 42, through hole e; 43, screw head counterbore c; 44, screw hole e; 45, through hole d; 46 , screw hole f; 47, screw head counterbore d; 48, clamping base; 49, clamping arched seat; 50, semicircular; 51, square; 52, screw hole g; 53, upper cover plate; 54 , lower cover plate; 55, left lifting bracket; 56, right lifting bracket; 57, X-shaped lifting bracket; 58, advancing screw; 59, rotating shaft; 60, axle sleeve; 61, square chute; 62, screw hole; 63 , Square slider; 64, screw hole h; 65 limit nut.

Detailed ways

The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are part of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" appear ", etc., the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation , constructed and operated in a particular orientation and therefore should not be construed as limiting the invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be understood as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise specified and limited, terms such as "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a A detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediary, and it may be an internal communication between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

Please refer to Figures 1 to 7, which show a preferred embodiment, a new energy motor test bench, including a sliding guide rail 6, a sensor combined I-beam bracket 7, and a combined test motor assembly I-beam bracket 8, lower adapter plate 10, upper adapter plate 11, motor vertical lift adjustment device 1, elastic coupling 2, accompanying test motor assembly 4, tested motor 5, dynamic torque sensor 3 and tested Motor special fixture 14. The motor test bench is divided into a test counter 17 and a test device. The top surface of the test counter 17 is provided with a stainless steel metal plate, and the stainless steel metal plate is provided with a double row of twelve through holes for piercing T-shaped screws 9, six on one side. The through holes are evenly distributed according to the length of the slide guide rail 6, so that the slide guide rail 6 is fastened and stressed evenly. The bottom of the test counter 17 is provided with four lockable universal wheels 18, which are convenient for adjusting the position according to the test requirements. After the workbench moves to the designated position, the universal wheels 18 can be locked to prevent the bench from moving. The test device is arranged on the left side of the test counter 17. The two sliding guide rails 6 are parallelly fastened on the test counter by T-shaped screws 9, the left side of the guide rail 6 is aligned with the left side of the test counter 17, and each module on the sliding guide rail 6 can be adjusted according to the actual motor extension shaft length of the tested motor 5.

As a preferred embodiment, the sensor combined I-beam bracket 7 is divided into an upper cover a19, a supporting beam a20, a lower cover a21 and fastening screws a27. Four screw head counterbores a38 are arranged in the middle part of the top of the upper cover a19, the fastening screws a27 are connected with the support beam a20 through the screw head counterbores a38, and the nuts do not protrude from the top surface of the upper cover a19. Four screw holes 37 are provided on both sides of the upper cover plate a19, and the sensor 3 is fixed by screws. Four screw holes d40 are evenly distributed in the middle part of the top and bottom of the support beam a20 according to the length direction, so as to realize the uniform force of connecting with the upper and lower cover plates. Four screw head counterbores b39 are provided at the middle part of the bottom of the lower cover a21, the fastening screws a27 are connected with the support beam a20 through the screw head counterbores b39, and the nuts do not protrude from the bottom of the lower cover a21. Four through holes c41 are provided on both sides of the lower cover plate a21 , so that the T-shaped screw 9 penetrates from bottom to top and the toothed nut 29 is fixed to the sliding guide rail 6 . The upper cover plate a19 and support beam a20 of the sensor combined bracket can be customized according to different sensor sizes and heights and realize fast clamping switching. At the same time, the flat structure is easy to process, and can achieve better shape and position tolerances at a lower cost, ensuring The test accuracy of the test device.

As a preferred embodiment, the combined I-beam bracket 8 of the accompanying motor assembly is divided into an upper cover a23, a support beam a24, a lower cover a25 and fastening screws a26; There are three screw head counter holes c43, the fastening screw a26 is connected with the support beam a24 through the screw head counter hole c43, and the nut does not protrude from the top surface of the upper cover. There are four screw holes 44 on both sides of the upper cover plate a23, through which the fastening screws b26 can be used to fix the accompanying motor 4. Three screw holes f46 are evenly distributed in the middle part of the top and bottom of the support beam a24 according to the length direction, so as to realize the uniform force of connecting with the upper and lower cover plates. There are three screw head counterbores d47 in the middle of the bottom of the lower cover a25, the fastening screws a26 are connected with the support beam a24 through the screw head counterbores d47, and the nuts do not protrude from the bottom of the lower cover. Four through holes 45 are provided on both sides of the lower cover plate a25 , so that the T-shaped screws 9 penetrate from bottom to top and the toothed nuts 29 are fixed to the sliding guide rail 6 . The upper cover plate a23 and the support beam a24 of the combined bracket of the accompanying motor can be customized according to the size and height of different accompanying motors and realize fast clamping and switching. At the same time, the flat structure is easy to process and can achieve better shape and position tolerances at a lower cost. Size, to ensure the test accuracy of the test device.

As a preferred embodiment, four screw holes a31 are symmetrically provided on both sides of the upper adapter plate 11, through which the screws penetrate from top to bottom to achieve fastening with the clamping base 48 of the special fixture for the motor under test. Four through holes a32 are symmetrically arranged on both sides of the short side, through which screws penetrate from top to bottom to realize fastening with the upper plane of the vertical lifting adjustment device 1 . Four through holes b33 are arranged symmetrically on both sides of the long side of the lower adapter plate 10 , so that the T-shaped screw 9 penetrates from bottom to top and the toothed nut 29 is fixed to the sliding guide rail 6 . Four screw holes b34 are symmetrically arranged in the middle of the lower adapter plate 10 , through which the screws penetrate from top to bottom to realize the fastening with the lower plane of the vertical lifting adjustment device 1 . The upper and lower plates of the motor vertical lifting adjustment device 1 are provided with several through holes and screw holes for passing screws, which can realize connection with adapter plates of various sizes. One side includes a rotating handle 12, by which the upper plane can be raised and lowered, which is convenient for adapting to motors 5 of different diameters. Both the upper adapter plate 11 and the lower adapter plate 10 are of a flat plate structure for easy processing, and can achieve better shape and position tolerances at a lower cost to ensure the testing accuracy of the testing device. The upper adapter plate 11 can be customized according to different motor clamping bases 48 and realize fast clamping switching.

As a preferred embodiment, the fixture 14 for the motor under test is divided into a clamping base 48 , a clamping arched seat 49 and a clamping screw 15 . The clamping base 48 is provided with an inverted triangular clamping groove 13, which is arranged in the middle of the clamping groove 13. The clamping groove 13 cooperates with the motor casing to realize the left and right center alignment of the motor shaft axis, avoid the horizontal deviation of the motor shaft, and only adjust the vertical The direction height can realize the coaxial alignment with the sensor 3 and the accompanying motor 4 . Both sides of the clamping seat 48 are provided with symmetrical rectangular clamping ears, which cooperate with the lower plane 36 and the upper plane 35 of the clamping ears. The clamping arch seat 49 is provided with a screw hole g52 in the middle of the arch circle, and the clamping screw 15 passes through the screw hole g52 from top to bottom to tighten the motor casing, and the bottom of the clamping screw 15 is provided with a glue Pad 16 prevents scratching the motor housing. The top of the clamping arch 49 is a semicircle 50, and the bottom is a square 51. The internal width of the clamping arch 49 is greater than the diameter of the motor under test, and both sides of the bottom 49 of the arch are provided with inward rectangular clamping ears. After the clamping screw 15 bears against the motor housing from top to bottom, the clamping plane 35 of the clamping ear of the arched seat is matched with the clamping lower plane 36 of the clamping ear of the clamping base at the same time. When the motor is clamped, the motor 5 is placed in the inverted triangular clamping groove 13, which can avoid the motor falling that may be caused by the external force supporting the motor. After tightening the clamping screw 15, the axis position in the horizontal direction of the motor shaft can be automatically corrected. Compared with the motor method The flange surface connection saves the installation of multiple screws. After tightening the clamping screw 15, the coaxial connection between the motor shaft, the sensor shaft and the accompanying motor shaft is realized by adjusting the height of the vertical lifting adjustment device 1, and the elastic coupling 2 is used for the connection, which can eliminate the slight deviation of the axis and ensure better test accuracy.

As a preferred embodiment, the motor vertical lifting adjustment device 1 is divided into an upper cover 53, an X-shaped lifting bracket 57 (left lifting bracket 55, right lifting bracket 56), a push screw 58, a knob 12 and a lower cover 54 . The long side and the short side of the upper cover plate 53 are symmetrically arranged with four screw holes h64 for passing screws, so as to realize screw fastening with the upper adapter plate 11 . The center of the upper cover plate 53 is provided with three through holes along the four corners, and the middle is provided with the three through holes along the short side. The through holes are used to achieve weight reduction and better expansion functions. A square chute 61 is arranged on the left side of the bottom surface of the upper cover plate 53, and the screw holes 62 of the propulsion screw 58 are concentrically arranged on both sides of the square chute 61. The concentric arrangement of the screw holes 62 prevents the propulsion screw 58 from shifting during the propulsion process, and ensures that the knob 12 rotates at the same angle to achieve Relatively fixed lifting stroke. The right side of the bottom surface of the upper cover plate 53 is arranged along the two sides of the short side for the shaft sleeve 60 for piercing the shaft 59. The shaft sleeve 60 is concentrically arranged, and the shaft 59 passes through the shaft sleeves 60 on both sides concentrically. Rotate within 60; X-shaped lifting bracket 57 is divided into left lifting bracket 55, right lifting bracket 56, the center of left lifting bracket 55 and right lifting bracket 56 is provided with a through hole that passes through rotating shaft 59, and the two brackets can rotate around the central axis of the through hole . Left elevating support 55 left lower support end and upper right support end respectively offer the through hole that is used to wear rotating shaft 59, and right elevating support 56 lower right and left upper support end respectively offer the through hole that is used to wear rotating shaft 59. Right elevating support 56 upper left rotating shaft 59 is fixed with square slide block 63, and a limit nut 65 is respectively installed at rotating shaft 59 two ends, prevents X-shaped elevating support 57 from displacement along both sides. A knob 12 is fixed at the end of the advancing screw 58 , and the advancing and retreating of the advancing screw 58 can be realized by rotating the knob 12 . The propulsion screw 58 is fixed on the square slider 63, and the square slider 63 cooperates with the square chute 61 to ensure better sliding precision and avoid greater loosening of the slider. Four screw holes for passing screws are arranged symmetrically in the middle of the lower cover plate 54 , so as to realize screw fastening with the lower adapter plate 10 . Three through holes are arranged along the long side at the middle positions on both sides of the lower cover plate 54 , and the through holes are used to achieve weight reduction and better expansion functions. A square chute 61 is arranged on the left side of the top surface of the lower cover plate 54, and the position of the chute of the lower cover plate 54 is aligned with the position of the chute of the upper cover plate 53, and the right side of the top surface of the lower cover plate 54 is arranged concentrically along both sides of the short side. The bushing 60 of the rotating shaft 59 is passed through, the position of the bushing of the lower cover plate 54 is aligned with that of the upper cover plate 53, the rotating shaft 59 passes through the bushings 60 on both sides concentrically, and the rotating shaft 59 can be inside the bushing 60 during the lifting process rotate. Rotate the knob 12 clockwise to realize the advancement of the screw rod 58, the square slide block 63 in the square chute 61 moves inward, and the remaining rotating shafts 59 move inward at the same time to realize the increase of the height of the motor vertical lifting adjustment device 1 . On the contrary, the reduction of the height of the motor vertical lifting adjustment device 1 is realized.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the implementation and protection scope of the present invention. For those skilled in the art, they should be able to realize that all equivalents made by using the description and illustrations of the present invention The solutions obtained by replacement and obvious changes shall all be included in the protection scope of the present invention.

Claims (8)

1. A new energy motor test bench, comprising a test counter and a test device, the test device is arranged on the test counter, it is characterized in that the test device includes a sliding guide rail, a sensor combined type I-beam support, a companion The combined I-beam bracket of the motor assembly under test, the motor vertical lifting adjustment device, the accompanying motor assembly, the motor under test, the dynamic torque sensor and the special fixture for the motor under test; The beam bracket and the combined I-beam bracket of the accompanying test motor assembly are set on the sliding guide rail in sequence, the motor under test is set on the motor vertical lifting adjustment device through the special fixture for the motor under test, and the dynamic torque sensor is set on the sensor combination On the type I-beam support, the accompanying test motor assembly is arranged on the combined type I-beam support of the accompanying test motor assembly, and the test motor and the dynamic torque sensor and the accompanying test motor assembly and the dynamic torque sensor are respectively Transmission connection through elastic coupling. 2. A new energy motor test bench according to claim 1, characterized in that, the top surface of the test counter is provided with a stainless steel metal plate, and the stainless steel metal plate is provided with a double row of holes for passing T-shaped screws. holes, the bottom of the test counter is provided with lockable universal wheels, and the test device is arranged on the test counter. 3. A new energy motor test bench according to claim 2, characterized in that a number of T-shaped screws are provided on both sides of the sliding guide rail, and are fixed on the test counter by T-shaped screws. 4. A new energy motor test bench according to claim 1, wherein the sensor combined I-beam bracket includes an upper cover plate a, a support beam a, a lower cover plate a and fastening screws a, The middle part of the top of the upper cover plate a is provided with a screw head sink hole, the two sides of the upper cover plate a are provided with screw holes, the top and the middle part of the bottom of the support beam a are respectively provided with screw holes, and the lower cover plate a A screw head counterbore is provided at the middle part of the bottom, and through holes are provided on both sides of the lower cover plate a. 5. A new energy motor test bench according to claim 1, characterized in that, the combined I-beam bracket of the accompanying test motor assembly includes an upper cover b, a supporting beam b, a lower cover b and a tight Fix the screw b, the middle part of the top of the upper cover b is provided with a screw head counterbore, the two sides of the upper cover b are provided with screw holes, the top and the middle part of the bottom of the support beam b are respectively provided with screw holes, the The middle part of the bottom of the lower cover plate b is provided with counterbore holes for screw heads, and the two sides of the lower cover plate b are provided with through holes. 6. A new energy motor test bench according to claim 1, wherein the special fixture for the motor under test includes a clamping base, a clamping arched seat and a clamping screw, and the clamping base is provided with Inverted triangular clamping groove; the clamping arch seat is provided with screw holes for clamping screws, the upper part of the clamping arch seat is semicircular, the lower part of the clamping arch seat is square, and the Both sides of the bottom of the clamping arch seat are provided with clamping ears, and the clamping ears are provided with a clamping plane. 7. A new energy motor test bench according to claim 1, characterized in that, the motor vertical lifting adjustment device includes an upper cover, an X-shaped lifting bracket, a propulsion screw, a knob and a lower cover; the upper The left side of the bottom surface of the cover plate is provided with a square chute, the two sides of the square chute are respectively provided with screw holes for passing through the propulsion screw, and the right side of the bottom surface of the upper cover plate is provided with a shaft for passing through the two sides of the short side. The shaft sleeves, and the two shaft sleeves are arranged concentrically; the X-shaped lifting bracket includes a left lifting bracket and a right lifting bracket, and the center of the left lifting bracket and the right lifting bracket is provided with a through hole through which the rotating shaft is inserted. The end of the lower left bracket of the left lift bracket and the end of the upper right bracket are respectively provided with through holes for piercing the rotating shaft. There are rotating shafts; the upper left of the right lifting bracket is provided with a rotating shaft, the two ends of the rotating shaft are respectively provided with limit nuts, the middle of the rotating shaft is fixed with a square slider, and the end of the pushing screw is provided with a knob. The screw rod is fitted on the square slider; the left side of the top surface of the lower cover is provided with a square chute, and the right side of the top surface of the lower cover is provided with bushings for passing the rotating shaft along both sides of the short side. , and the two bushings are arranged concentrically. 8. A new energy motor test bench according to claim 1, characterized in that an upper adapter plate is provided on the top of the motor vertical lifting adjustment device, and is connected to the special fixture of the motor under test through the upper adapter plate , the bottom of the vertical lifting adjustment device is provided with a lower adapter plate, which is connected to the sliding guide rail through the lower adapter plate.