Device for data acquisition of a vibration spectrum of an electric drive system

Abstract

Device for data acquisition of a vibration spectrum of an electric drive system, comprising a first mounting frame (1), characterized in that a second mounting frame (2) is connected below the first mounting frame (1), a cover plate (3) is attached to the top of the first mounting frame (1), a test motor (4) is attached in the middle of the cover plate (3), an output shaft (5) is attached to the output end of the test motor (4), a sensor (6) is attached to the side of the cover plate (3), and a base plate (7) is attached to the underside of the second mounting frame (2), wherein a connection mechanism is provided between the first mounting frame (1) and the second mounting frame (2).

Description

Technical field

[0001] The present utility model relates to the technical field of motor testing equipment, in particular to a device for recording the vibration spectrum of an electric drive system. Background technology

[0002] In the research, development, and maintenance of electrical systems, the vibration characteristics of generators serve as a key indicator for assessing operational reliability, service life, and potential failure risks. Vibrations generated by generators under varying speeds and load conditions can not only lead to mechanical failures such as bearing wear and fatigue-related fractures of the drive shaft, but can also induce resonances in surrounding systems through structural transmission, thereby compromising the stability of the entire electrical system. Therefore, the precise acquisition and analysis of generator vibration data under diverse operating conditions is crucial for optimizing product design, improving production quality, and developing effective maintenance strategies.

[0003] The patent, publication number CN120740747A, provides a test device for isolating generator vibrations and a method for its use, comprising a base. A support platform is mounted above the base, with a generator set attached to the top of the support platform. An electric motor is mounted at the bottom of the support platform, and a drive shaft connecting the electric motor to the generator set is arranged between them.

[0004] The aforementioned test device supports the engine assembly from above via a support platform. Setting up the support platform is time-consuming and physically demanding, proving extremely impractical. Furthermore, folding and stowing the platform is inconvenient for personnel, resulting in wasted space and increased transport costs. Content of the utility model

[0005] The present utility model aims to provide a device for recording the vibration spectrum of an electric drive system and thus to solve the problems raised in the aforementioned prior art.

[0006] To achieve the above-mentioned purpose, the present utility model offers the following technical solution: a device for acquiring data from the vibration spectrum of an electric drive system, comprising a first mounting frame, wherein a second mounting frame is connected below the first mounting frame, a cover plate is attached to the top of the first mounting frame, a test motor is attached in the middle of the cover plate, an output shaft is attached to the output end of the test motor, a sensor is attached to the side of the cover plate, and a base plate is attached to the bottom of the second mounting frame, wherein a connection mechanism is provided between the first mounting frame and the second mounting frame.

[0007] Furthermore, the connecting mechanism comprises a first crossbar, wherein a second crossbar is slidably connected in the first crossbar, and wherein two locking blocks are slidably connected in the second crossbar, and a first spring is connected between the two locking blocks.

[0008] Furthermore, the outside of the first crossbar is symmetrically provided with two sets of through holes, a stop block being inserted into one set of through holes, a second spring being arranged around the outside of the stop block, while one end of the second spring is firmly connected to the stop block and the other end is firmly connected to the first crossbar.

[0009] Furthermore, a connecting element is attached to one end of both the first crossbar and the second crossbar, and a first connecting bar and a second connecting bar are rotatably connected to the two connecting elements, respectively, with the other end of the first connecting bar rotatably connected to the first mounting frame and the other end of the second connecting bar rotatably connected to the second mounting frame.

[0010] Furthermore, a third connecting rod is rotatably connected to the first connecting rod, the other end of the third connecting rod is rotatably connected to a central shaft, and a plug pin is rotatably connected to the end of the central shaft, while a movable chamber is formed in the first mounting frame and the movable chamber corresponds to the plug pin.

[0011] Furthermore, the outside of the first mounting frame is provided with a guide bore, the guide bore corresponds to the central shaft and the guide bore is connected to the movable chamber, with a connecting block being attached to the underside of the second mounting frame and the connecting block corresponding to the plug pin.

[0012] Furthermore, a telescopic rod is arranged symmetrically between the first mounting frame and the second mounting frame, wherein the upper end of the telescopic rod is firmly connected to the first mounting frame and the lower end of the telescopic rod is firmly connected to the second mounting frame.

[0013] Compared to the prior art, the utility model has the following advantages: By arranging two sets of through-holes on the outside of the first crossbar, with a stop block inserted into one set of through-holes, this device for acquiring data on the vibration spectrum of an electric drive system causes the stop block to press against the locking block. When the stop block presses against the locking block, the locking block retracts into a second crossbar. Once the second crossbar is released from its fixed position, it slides to the innermost point within the first crossbar. The locking block then engages in the other set of through-holes and secures the second crossbar to the first crossbar. As the first crossbar moves, a connecting element pulls both a first connecting rod and a second connecting rod, thereby reducing the distance between the first and second mounting frames.This results in space savings and reduces transport costs. Furthermore, when the connecting element pulls the first connecting rod, the rotation of the first connecting rod affects the third connecting rod, since the other end of the first connecting rod is rotatably connected to the first mounting frame. One end of the third connecting rod is rotatably connected to the first connecting rod, while the other end is rotatably connected to the central shaft. The guide bore allows the central shaft to move only horizontally. When the third connecting rod sets the central shaft in motion, the dowel pin attached to the end of the central shaft slides in the movable chamber and gradually releases from the connecting block. Once the connecting block is no longer secured by the dowel pin, it can be removed from the first mounting frame along with the second mounting frame of the other set.This facilitates quick assembly and disassembly, saving staff time and physical effort. Illustration of the attached figures Fig. Figure 1 is a schematic representation of the overall structure of the present utility model; Fig. Figure 2 is a schematic representation of the structure of the connection between the first mounting frame and the second mounting frame of the present utility model; Fig. Figure 3 is a schematic representation of the structure of the connection mechanism of the present utility model; Fig. Figure 4 is a schematic representation of the structure of the connection between the first crossbar in cross-section and the second crossbar of the present utility model; Fig. Figure 5 is an enlarged schematic representation of the structure at point A in Fig. 4; Fig. Figure 6 is a schematic representation of the structure of the connection between the second crossbar in cross-section and the locking block of the present utility model; Fig. Figure 7 is a schematic representation of the structure of the connection between the first mounting frame in cross-section and the plug pin of the present utility model.

[0014] Included: 1. First mounting frame; 2. Second mounting frame; 3. Cover plate; 4. Test motor; 5. Output shaft; 6. Sensor; 7. Base plate; 8. First crossbar; 9. Second crossbar; 10. Locking block; 11. First spring; 12. Through hole; 13. Stop block; 14. Second spring; 15. Connecting element; 16. First connecting rod; 17. Second connecting rod; 18. Third connecting rod; 19. Central shaft; 20. Plug pin; 21. Movable chamber; 22. Guide bore; 23. Connecting block; 24. Telescopic rod. Detailed descriptions

[0015] The technical solutions of the embodiments of this utility model are now clearly and completely described with reference to the accompanying drawings. It is understood that the embodiments described here represent only a subset of the embodiments of this utility model and not all of them. All other embodiments that are achieved by persons skilled in the art without creative work on the basis of the embodiments of this utility model fall within the scope of protection of this utility model.

[0016] Example I: With reference to the Fig. 1 to Fig. Section 6 of the present utility model offers the following technical solution: A device for acquiring data from the vibration spectrum of an electric drive system comprises a first mounting frame 1, wherein a second mounting frame 2 is attached to the underside of the first mounting frame 1. A cover plate 3 is attached to the top of the first mounting frame 1, wherein a test motor 4 is mounted in the center of the cover plate 3. An output shaft 5 is attached to the output end of the test motor 4. A sensor 6 is attached to the side of the cover plate 3. A base plate 7 is attached to the underside of the second mounting frame 2. A connecting mechanism is provided between the first mounting frame 1 and the second mounting frame 2. The connecting mechanism comprises a first crossbar 8, wherein a second crossbar 9 is slidably connected to the first crossbar 8.Two locking blocks 10 are slidably connected in the second crossbar 9, with a first spring 11 connected between the two locking blocks 10. Two sets of through holes 12 are symmetrically formed on the outside of the first crossbar 8, each set comprising an upper and a lower through hole 12. A stop block 13 is inserted into each set of through holes 12, with a second spring 14 arranged around the outside of the stop block 13. One end of the second spring 14 is fixedly connected to the stop block 13, while the other end is fixedly connected to the first crossbar 8. A connecting element 15 is attached to one end of both the first crossbar 8 and the second crossbar 9. A first connecting rod 16 and a second connecting rod 17 are each rotatably connected to the two connecting elements 15.The other end of the first connecting rod 16 is rotatably connected to the first mounting frame 1, while the other end of the second connecting rod 17 is rotatably connected to the second mounting frame 2. A telescopic rod 24 is arranged symmetrically between the first mounting frame 1 and the second mounting frame 2. The upper end of the telescopic rod 24 is fixedly connected to the first mounting frame 1, and the lower end of the telescopic rod 24 is fixedly connected to the second mounting frame 2.

[0017] The support platform consists of several sets of first mounting frames 1 and second mounting frames 2. The uppermost first mounting frame 1 is attached to a cover plate 3, in the center of which a test motor 4 is mounted. The test motor 4 drives the output shaft 5, causing it to rotate, while a sensor 6 measures the vibration deflection of the output shaft 5 and records the test data. When the support platform is not needed, both stop blocks 13 can be pressed simultaneously. This causes the stop blocks 13 to press against the locking blocks 10, which retract into the second crossbar 9. At the same time, the first spring 11 is compressed and deformed by the two locking blocks 10. Once the two locking blocks 10 are fully retracted into the second crossbar 9, the second crossbar 9 is no longer obstructed by the first crossbar 8 or the locking blocks 10.At this point, the second crossbar 9 moves deeper into the interior of the first crossbar 8. One end of both the first crossbar 8 and the second crossbar 9 is each secured by a connecting element 15. As the second crossbar 9 slides within the first crossbar 8, the connecting elements 15 simultaneously pull the first connecting bar 16 and the second connecting bar 17. The first connecting bar 16 pulls the first mounting frame 1, while the second connecting bar 17 pulls the second mounting frame 2. Under the action of the telescopic rod 24, the first mounting frame 1 gradually lowers and approaches the second mounting frame 2. As the second crossbar 9 slides into its innermost position within the first crossbar 8, the locking block 10 aligns with another set of through holes 12.Under the force of the first spring 11, the locking block 10 moves vertically. In doing so, both locking blocks 10 engage in their respective through-holes 12. The locking blocks 10 secure the second crossbar 9. When the second crossbar 9 can no longer slide, the distance between the first mounting frame 1 and the second mounting frame 2 reaches its minimum. Consequently, the overall space requirement of the first mounting frame 1 and the second mounting frame 2 is reduced, thereby lowering transport costs.

[0018] Example II: With reference to the Fig. 2, Fig. 3 and Fig.Figure 7, building upon embodiment one, further discloses a structure for assembling the first mounting frame 1 and the second mounting frame 2 in two sets, the specific structure being as follows: A third connecting rod 18 is rotatably connected to the first connecting rod 16, the other end of the third connecting rod 18 being rotatably connected to a central shaft 19. A pin 20 is rotatably connected to the end of the central shaft 19. A movable chamber 21 is formed in the first mounting frame 1, the movable chamber 21 being aligned with the pin 20. A guide bore 22 is formed on the outside of the first mounting frame 1, the guide bore 22 being aligned with the central shaft 19 and the guide bore 22 being connected to the movable chamber 21.A connecting block 23 is attached to the underside of the second mounting frame 2, with the connecting block 23 corresponding to the plug pin 20.

[0019] When the connecting element 15 pulls the first connecting rod 16, the rotation of the first connecting rod 16 affects the third connecting rod 18, since the other end of the first connecting rod 16 is rotatably connected to the first mounting frame 1. One end of the third connecting rod 18 is rotatably connected to the first connecting rod 16, while the other end is rotatably connected to the central shaft 19. The central shaft 19 can only move horizontally through the guide bore 22. When the third connecting rod 18 sets the central shaft 19 in motion, the locking pin 20, attached to the end of the central shaft 19, slides in the movable chamber 21 and gradually disengages from the connecting block 23. Once the connecting block 23 is no longer secured by the locking pin 20, it can be removed from the first mounting frame 1, along with the second mounting frame 2 of the other set.This facilitates quick assembly and disassembly, saving staff time and physical effort.

[0020] The content not explained in detail in this description is part of the state of the art, which is known to experts in this field.

[0021] Although the present utility model has been described in detail with reference to the above embodiments, it is obvious to those skilled in the art that modifications can be made to the technical solutions described in the above embodiments, or that some of the technical features can be replaced by equivalent spare parts. All modifications, equivalent spare parts, improvements, etc., that are made in accordance with and within the principles of the present utility model are covered by the scope of protection of the present utility model.

[0022] The present utility model discloses a device for acquiring data on the vibration spectrum of an electric drive system, relating to the technical field of motor test equipment. It comprises a first mounting frame, with a second mounting frame connected below the first mounting frame. A cover plate is attached to the top of the first mounting frame, a test motor is mounted in the center of the cover plate, an output shaft is attached to the output end of the test motor, and a sensor is attached to the side of the cover plate. By means of two sets of through holes on the outside of the first crossbar, with a stop block inserted into one set of through holes, the stop block presses against the locking block. When the stop block presses against the locking block, the locking block retracts into a second crossbar.Once the second crossbar is released from its fixed position, it slides to the innermost point within the first crossbar. The locking block then engages in the other set of through-holes, securing the second crossbar to the first. As the first crossbar moves, a connecting element pulls both the first and second connecting bars, reducing the distance between the first and second mounting frames. This saves space and reduces transportation costs. QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] CN 120740747A

[0003]

Claims

[1] Device for recording the vibration spectrum of an electric drive system, comprising a first mounting frame (1), characterized by , that a second mounting frame (2) is connected below the first mounting frame (1), a cover plate (3) is attached to the top of the first mounting frame (1), a test motor (4) is attached in the middle of the cover plate (3), an output shaft (5) is attached to the output end of the test motor (4), a sensor (6) is attached to the side of the cover plate (3), and a base plate (7) is attached to the underside of the second mounting frame (2), wherein a connection mechanism is provided between the first mounting frame (1) and the second mounting frame (2). [2] Device for recording the vibration spectrum of an electric drive system according to claim 1, characterized by, that the connecting mechanism comprises a first crossbar (8), wherein a second crossbar (9) is slidably connected in the first crossbar (8), and wherein two locking blocks (10) are slidably connected in the second crossbar (9), and a first spring (11) is connected between the two locking blocks (10). [3] Device for recording the vibration spectrum of an electric drive system according to claim 2, characterized by , that the outside of the first crossbar (8) is symmetrically provided with two sets of through holes (12), wherein a stop block (13) is inserted into one set of through holes (12), wherein a second spring (14) is arranged around the outside of the stop block (13), while one end of the second spring (14) is fixedly connected to the stop block (13) and the other end is fixedly connected to the first crossbar (8). [4] Device for recording the vibration spectrum of an electric drive system according to claim 2, characterized by , that a connecting element (15) is attached to one end of both the first crossbar (8) and the second crossbar (9), and that a first connecting bar (16) and a second connecting bar (17) are rotatably connected to the two connecting elements (15), the other end of the first connecting bar (16) being rotatably connected to the first mounting frame (1) and the other end of the second connecting bar (17) being rotatably connected to the second mounting frame (2). [5] Device for recording the vibration spectrum of an electric drive system according to claim 4, characterized by, that a third connecting rod (18) is rotatably connected to the first connecting rod (16), the other end of the third connecting rod (18) is rotatably connected to a central shaft (19) and a plug pin (20) is rotatably connected to the end of the central shaft (19), while a movable chamber (21) is formed in the first mounting frame (1) and the movable chamber (21) corresponds to the plug pin (20). [6] Device for recording the vibration spectrum of an electric drive system according to claim 1, characterized by , that the outside of the first mounting frame (1) is provided with a guide bore (22), the guide bore (22) corresponds to the central shaft (19) and the guide bore (22) is connected to the movable chamber (21), wherein a connecting block (23) is attached to the underside of the second mounting frame (2) and the connecting block (23) corresponds to the plug pin (20). [7] Device for recording the vibration spectrum of an electric drive system according to claim 1, characterized by , that a telescopic rod (24) is arranged symmetrically between the first mounting frame (1) and the second mounting frame (2), wherein the upper end of the telescopic rod (24) is fixedly connected to the first mounting frame (1) and the lower end of the telescopic rod (24) is fixedly connected to the second mounting frame (2).

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