Adjustable motor test bench

By introducing hydraulic cylinders and lifting adjustment mechanisms into the motor test bench, establishing a coordinate system, and utilizing electronic reading devices, precise alignment and height adjustment of the motor spindle were achieved. This solved the problems of difficult alignment and limited applicability in existing technologies, and improved the testing accuracy and applicability.

CN223756787UActive Publication Date: 2026-01-02ZHENGZHOU E-ON NEW ENERGY VEHICLE TECH CO LTD
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Patent Information

Application Number
CN202423323455.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-31
Publication Date
2026-01-02
Estimated Expiration
2034-12-31

AI Technical Summary

Technical Problem

Existing motor test benches are difficult to align, have poor accuracy, and have limited applicability, and cannot be effectively adjusted to adapt to motors of different specifications.

Method used

An adjustable motor test bench was designed, which uses a hydraulic cylinder and a lifting adjustment mechanism. A coordinate system is established through four sets of detection units, and the spindle position is displayed in real time using an electronic reading device. The eccentricity is amplified by the change in the diameter of the hydraulic cylinder to achieve precise centering and height adjustment.

Benefits of technology

It simplifies the difficulty of detecting the motor spindle position, improves the detection accuracy, and expands the applicability of the device, enabling it to adapt to the testing of motors of different specifications.

✦ Generated by Eureka AI based on patent content.

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    Figure CN223756787U_ABST
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Abstract

The utility model relates to the technical field of motor testing, in particular to an adjustable motor testing rack, which comprises a fixing frame, a testing mechanism is fixedly arranged on the periphery of the fixing frame, and the testing mechanism comprises a hydraulic cylinder, a first piston, a second piston, a hydraulic medium, a pressure spring, a first movable rod and a second movable rod. The position of the main shaft is detected through the pressing plate, numerical values displayed by the four sets of electronic reading devices in real time are equivalent to horizontal and vertical coordinate values of the position of the main shaft of the motor to be detected, an operator can quickly obtain whether the main shaft of the motor to be detected is eccentric or not, the eccentric direction and the eccentric amount according to the numerical values displayed by the four sets of electronic reading devices, and simplicity, rapidness and simplicity are achieved. The detection difficulty of the position of the main shaft of the motor is greatly simplified, the height of the pressing plate testing mechanism which can be adjusted up and down can be adjusted according to the size of the to-be-tested motor, the testing device can be suitable for the to-be-tested motors of different specifications, and the application range of the device is greatly widened.
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Description

TECHNICAL FIELD

[0001] The utility model relates to motor test technical field, concretely is adjustable motor test bench. BACKGROUND

[0002] The motor needs to test and detect its performance through the motor test bench before loading. In the installation process before the motor test, the coaxial degree between the output shaft of the motor and the input shaft of the load dynamometer is required to be high, and needs to satisfy the "centering" of the output shaft of the motor and the input shaft of the load dynamometer. If the output shaft of the motor and the input shaft of the load dynamometer are not centered, the output shaft of the motor is offset, the output shaft of the motor is vibrated more violently in the high speed mode, the wear of the rotation speed torque sensor connected with the output shaft of the motor and the input shaft of the load dynamometer is easy to occur, thereby the accuracy of the value collected by the rotation speed torque sensor is affected, and the rotation speed torque sensor is damaged seriously. In the prior art, the position of the motor is usually adjusted by manually tightening and loosening the bolt to realize the centering. In the centering process, the coaxial degree is difficult to measure, the precision of the measuring tool and the experience and ability of the operator are required to be high, thereby the centering difficulty is great, the centering precision is poor, the test mechanism can not be shifted up and down, the motor specifications that can be tested by the test bench are limited, the test type is single, and the application range of the device cannot be improved. UTILITY MODEL CONTENTS

[0003] The utility model aims at providing a kind of adjustable motor test bench to solve the problems raised in the above background.

[0004] To achieve the above object, the utility model provides the following technical scheme:

[0005] A kind of adjustable motor test bench, including fixed frame, the fixed frame annular fixed setting is provided with test mechanism, the test mechanism includes hydraulic cylinder, first piston, second piston, hydraulic medium, compression spring, first movable rod and second movable rod, the fixed frame annular fixed setting is provided with several hydraulic cylinders, the first piston is movably arranged in the large-diameter side inside the hydraulic cylinder, the second piston is movably arranged in the small-diameter side inside the hydraulic cylinder, the hydraulic medium is arranged between the first piston and the second piston, the compression spring is fixedly arranged on the other side of the second piston, the first movable rod is fixedly arranged in the compression spring, the other side of the compression spring is fixedly connected with the inner wall of the hydraulic cylinder, the first movable rod is movably connected with the inner wall of the hydraulic cylinder, the second movable rod is fixedly arranged on the side, away from the hydraulic medium, of the second piston, and the second movable rod is movably connected with the inner wall of the hydraulic cylinder.

[0006] The side of the fixing frame is fixedly provided with a lifting adjusting mechanism, the lifting adjusting mechanism comprises a lifting rod, a first threaded hole, a sleeve column, a second threaded hole, a positioning screw and a nut, the side of the fixing frame is fixedly provided with the lifting rod, a plurality of first threaded holes are formed in the lifting rod, the bottom end of the lifting rod is movably provided with the sleeve column, second threaded holes are formed in the two sides of the sleeve column, the first threaded hole and the second threaded hole are movably provided with the positioning screw inside, and the one side of the positioning screw is movably provided with the nut outside.

[0007] Preferably, the bottom end of the sleeve column is fixedly provided with a connecting plate on the two sides, a plurality of fixing screws are fixedly arranged at the top end of the connecting plate, and the other side of the second movable rod is fixedly provided with a pressing plate.

[0008] Preferably, the bottom end of the connecting plate is fixedly provided with a workbench, and the workbench is set to play a bearing test role.

[0009] Preferably, a plurality of hinges are fixedly arranged outside the workbench, and the one side of the hinge is movably provided with a cover plate door, so that the cover plate door can be turned over, and workers can put idle objects into the cover plate door for temporary storage.

[0010] Preferably, a plurality of supporting columns are fixedly arranged at the bottom end of the workbench, and the bottom end of the supporting column is provided with a plurality of expansion screws, the supporting column plays a role of stably supporting the whole device, the expansion screws are used for stably fixing the supporting column on the ground, and the stability of the device is guaranteed.

[0011] Preferably, a bearing table is fixedly arranged at one side of the top end of the workbench, a to-be-tested motor is fixedly arranged at the top end of the bearing table, and the main shaft of the to-be-tested motor is movably connected with the pressing plate; the to-be-tested motor is placed on the bearing table, and the device can be used for numerical testing of the to-be-tested motor.

[0012] Compared with the prior art, the device has the advantages that:

[0013] 1. The adjustable motor test bench comprises four detection units, which reflect the position of the main shaft of the to-be-tested motor from four directions, and a coordinate system is established, the position of the main shaft is detected through the pressing plate, the numerical values displayed by the four electronic reading devices are equivalent to the horizontal and vertical coordinate values of the position of the main shaft of the to-be-tested motor, and an operator can quickly obtain whether the main shaft of the to-be-tested motor is eccentric, the eccentric direction and the eccentric amount from the numerical values displayed by the four electronic reading devices, so that the detection difficulty of the position of the main shaft of the motor is greatly simplified.

[0014] 2. The adjustable motor test bench, the eccentricity of the main shaft is amplified by the change of the diameter of the hydraulic cylinder and is displayed through the second piston rod, the small eccentricity of the main shaft can cause the large position change of the second piston rod, the accuracy of detection is ensured, the up and down adjustable pressing plate test mechanism can make height adjustment according to the size of the motor to be detected, so that the test device can be applicable to motors to be detected of different specifications, and the application range of the device is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall external structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the overall installation of the test structure of the utility model;

[0017] Figure 3 It is a schematic diagram of the plane installation of the test structure of the utility model;

[0018] Figure 4 It is a schematic diagram of the installation of the lifting structure of the utility model;

[0019] Figure 5 It is a schematic diagram of the installation of the lifting fixing structure of the utility model;

[0020] Figure 6 It is a schematic diagram of the installation of the lifting fixing structure of the utility model; Figure 3 It is a schematic diagram of the installation of the lifting fixing structure of the utility model;

[0021] In the figure: 1, fixed frame; 2, hydraulic cylinder; 3, first piston; 4, second piston; 5, hydraulic medium; 6, compression spring; 7, first movable rod; 8, second movable rod; 9, lifting rod; 10, first threaded hole; 11, sleeve column; 12, second threaded hole; 13, positioning screw; 14, nut; 15, connecting plate; 16, fixing screw; 17, pressing plate; 18, workbench; 19, hinge; 20, cover door; 21, supporting column; 22, expansion screw; 23, bearing table; 24, motor to be detected. DETAILED DESCRIPTION

[0022] The technical scheme in the embodiments of the utility model will be clearly and completely described in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0023] Please refer to Figures 1-6 A technical scheme provided by the utility model:

[0024] The adjustable motor test bench, including fixed frame 1, fixed frame 1 annular fixed test mechanism, test mechanism includes hydraulic cylinder 2, first piston 3, second piston 4, hydraulic medium 5, compression spring 6, first movable rod 7 and second movable rod 8, fixed frame 1 annular fixed setting has a plurality of hydraulic cylinder 2, the large diameter side of the hydraulic cylinder 2 is movably provided with the first piston 3, the small diameter side of the hydraulic cylinder 2 is movably provided with the second piston 4, the first piston 3 and the second piston 4 are provided with the hydraulic medium 5, the other side of the second piston 4 is fixedly provided with the compression spring 6, the first movable rod 7 is fixedly provided in the compression spring 6, the other side of the compression spring 6 is fixedly connected with the inner wall of the hydraulic cylinder 2, the first movable rod 7 is movably connected with the inner wall of the hydraulic cylinder 2, the other side of the second piston 4 is fixedly provided with the second movable rod 8, and the second movable rod 8 is movably connected with the inner wall of the hydraulic cylinder 2.

[0025] The side of the fixed frame 1 is fixedly provided with a lifting adjusting mechanism, the lifting adjusting mechanism comprises a lifting rod 9, a first threaded hole 10, a sleeve column 11, a second threaded hole 12, a positioning screw 13 and a nut 14, the side of the fixed frame 1 is fixedly provided with the lifting rod 9, a plurality of first threaded holes 10 are formed in the lifting rod 9, the bottom end of the lifting rod 9 is movably provided with the sleeve column 11, the second threaded holes 12 are formed on the two sides of the sleeve column 11, the first threaded holes 10 and the second threaded holes 12 are movably provided with the positioning screw 13, and the outer side of the positioning screw 13 is movably provided with the nut 14.

[0026] In the embodiment, preferably, the sleeve column 11 is fixedly provided with the connecting plate 15 on the two sides of the bottom end, the connecting plate 15 is fixedly provided with a plurality of fixed screws 16 on the top end, the second movable rod 8 is fixedly provided with the pressing plate 17 on the other side, and the connecting plate can be stably fixed on the workbench through the fixed screws.

[0027] In the embodiment, preferably, the workbench 18 is fixedly provided on the bottom end of the connecting plate 15, and the workbench is set to bear the test.

[0028] In the embodiment, preferably, a plurality of hinges 19 are fixedly provided on the outside of the workbench 18, and the cover door 20 is movably provided on one side of the hinge, so that the cover door can be flipped, and the idle objects can be temporarily stored in the cover door.

[0029] In the embodiment, preferably, a plurality of supporting columns 21 are fixedly provided on the bottom end of the workbench 18, and the supporting columns 21 are provided with a plurality of expansion screws 22 on the bottom end, so that the supporting columns can be stably fixed on the ground by the expansion screws, and the stability of the device is ensured.

[0030] In this embodiment, preferably, the top end of the workbench 18 is fixedly provided with a bearing table 23, and the top end of the bearing table 23 is fixedly provided with a motor to be measured 24, and the main shaft of the motor to be measured 24 is movably connected with the pressing plate 17. The motor to be measured is placed on the bearing table, and the device can be used for numerical testing of the motor to be measured.

[0031] The adjustable motor test bench of the embodiment is used in the following way. First, the motor to be tested 24 is placed on the bearing table 23. The operator adjusts the position of the lifting rod 9 according to the height of the motor to be tested 24. The lifting rod 9 moves up and down inside the sleeve column 11. When the specified height is reached, the lifting rod 9 is passed through the first threaded hole 10 and the second threaded hole 12 by using the positioning screw 13, and the position height is fixed by rotating the nut 14. Then the main shaft of the motor to be tested 24 is passed through the pressing plates 17 of the four detection units. Under the action of the compression spring 6, the inner sides of the multiple pressing plates 17 are in contact with the main shaft of the motor to be tested 24. If the main shaft of the motor to be tested 24 is coaxial with the input shaft of the load dynamometer, i.e., the position of the motor to be tested 24 is not eccentric, the lengths of the four second piston rods 4 extending out of the hydraulic cylinder 2 are the same, and the scale values read and displayed by the electronic reading device are all the diameter of the main shaft of the motor to be tested 24. If the main shaft of the motor to be tested 24 is eccentric in a certain direction, i.e., the main shaft of the motor to be tested 24 is eccentric in a certain direction, the lengths of the four second piston rods 4 extending out of the hydraulic cylinder 2 will be different, and the values displayed by the four electronic reading devices will also be different. The principle and use process of the device are introduced by taking the leftward shift of the main shaft of the motor to be tested 24 as an example. If the main shaft of the motor to be tested 24 shifts leftward, the pressing plate 17 of the left detection unit is moved leftward, the pressing plate 17 pushes the first piston 3 leftward through the first piston rod 3, the first piston 3 pushes the second piston 4 leftward through the hydraulic medium 5, the second piston 4 pushes the second piston rod 4 leftward, the length of the second piston rod 4 extending out of the hydraulic cylinder 2 becomes longer, and the scale value read by the electronic reading device is greater than the diameter of the main shaft of the motor to be tested 24. At the same time, the pressing plate 17 of the right detection unit is moved leftward to contact the main shaft of the motor to be tested 24 under the action of the compression spring 6 in the pressing plate 17, the second piston rod 4 moves leftward, and therefore the length of the second piston rod 4 extending out of the hydraulic cylinder 2 decreases, and the scale value displayed by the electronic reading device of the detection unit is smaller than the diameter of the main shaft of the motor to be tested 24. In the above process, since the diameter of the hydraulic cylinder 2 at the position of the first piston 3 is much larger than the diameter of the hydraulic cylinder 2 at the position of the second piston 4, a small displacement of the first piston 3 can cause a large displacement of the second piston 4, i.e., the main shaft of the motor to be tested 24 has a small eccentricity, and the length of the second piston rod 4 extending out of the hydraulic cylinder 2 will change greatly, making the reading more accurate.The operator can quickly obtain whether the main shaft of the motor to be tested 24 is eccentric and the eccentric direction and the eccentric amount from the values displayed by the four electronic reading devices, which is simple, fast, simple and clear, greatly simplifies the detection difficulty of the motor main shaft position; in addition, the eccentric amount of the main shaft is amplified by the change of the diameter of the hydraulic cylinder 2 and is displayed by the second piston 4 rod, and a small eccentric amount of the main shaft can cause a large position change of the second piston 4 rod, thereby ensuring the detection accuracy; the up-down adjustable pressing plate 17 testing mechanism can make height adjustment according to the size of the motor to be tested 24, so that the testing device can be suitable for different specifications of the motor to be tested 24, and the application range of the device is greatly improved.

[0032] The basic principle, main features and advantages of the utility model are shown and described above. Those skilled in the art should understand that the utility model is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only preferred examples of the utility model and are not intended to limit the utility model. Without departing from the spirit and scope of the utility model, various changes and improvements can be made to the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. An adjustable motor test stand, characterized by: The utility model relates to a test device for motor, including fixed frame (1), the fixed frame (1) is circumferentially fixedly arranged with test mechanism, the test mechanism includes hydraulic cylinder (2), first piston (3), second piston (4), hydraulic medium (5), compression spring (6), first movable rod (7) and second movable rod (8), the fixed frame (1) is circumferentially fixedly arranged with a plurality of hydraulic cylinder (2), the first piston (3) is movably arranged in the large diameter side of the inside of hydraulic cylinder (2), the second piston (4) is movably arranged in the small diameter side of the inside of hydraulic cylinder (2), the hydraulic medium (5) is arranged between the first piston (3) and second piston (4), the compression spring (6) is fixedly arranged on the other side of second piston (4), the first movable rod (7) is fixedly arranged in the inside of compression spring (6), the other side of compression spring (6) is fixedly connected with the inner wall of hydraulic cylinder (2), the first movable rod (7) is movably connected with the inside of hydraulic cylinder (2), the second movable rod (8) is fixedly arranged on the side, away from the hydraulic medium (5) of second piston (4), and the second movable rod (8) is movably connected with the inside of hydraulic cylinder (2). The side of fixed frame (1) is fixedly provided with a lifting adjusting mechanism, the lifting adjusting mechanism comprises a lifting rod (9), a first threaded hole (10), a sleeve column (11), a second threaded hole (12), a positioning screw (13) and a nut (14), the side of fixed frame (1) is fixedly provided with a lifting rod (9), a plurality of first threaded holes (10) are formed in the inside of lifting rod (9), the bottom end of lifting rod (9) is movably provided with a sleeve column (11), second threaded holes (12) are formed on the both sides of sleeve column (11), positioning screws (13) are movably arranged in the first threaded holes (10) and the second threaded holes (12), and nuts (14) are movably arranged on the outside of positioning screws (13).

2. An adjustable motor test stand according to claim 1, wherein: The bottom end of sleeve column (11) is fixedly provided with a link plate (15), a plurality of fixed screws (16) are fixedly arranged at the top end of link plate (15), and a pressing plate (17) is fixedly arranged on the other side of second movable rod (8).

3. An adjustable motor test bed according to claim 2, wherein: The bottom end of link plate (15) is fixedly provided with a workbench (18).

4. An adjustable motor test bed according to claim 3, wherein: A plurality of hinges (19) are fixedly arranged on the outside of workbench (18), and a cover door (20) is movably arranged on one side of hinge (19).

5. An adjustable motor test stand as set forth in claim 3, wherein: A plurality of supporting columns (21) are fixedly arranged at the bottom end of workbench (18), and a plurality of expansion screws (22) are arranged at the bottom end of supporting column (21).

6. An adjustable motor test stand as set forth in Claim 3, wherein: A bearing table (23) is fixedly arranged on one side of the top end of workbench (18), a motor to be tested (24) is fixedly arranged at the top end of bearing table (23), and the main shaft of motor to be tested (24) is movably connected with pressing plate (17).