Coaxial centering device for an electrodynamic measuring machine

Abstract

The utility model belongs to electric drive equipment detection technical field especially relates to a coaxial centering device of electric drive measuring machine, including base, base top left and right respectively is equipped with installation platform two and installation platform one, is equipped with electric drive dynamometer in installation platform one, and electric drive dynamometer output end is connected with main rotating shaft in installation platform one side, and the one end of installation platform two away from installation platform one is rotatably installed with adjusting handle, and adjusting handle output end extends to installation platform two and is drivenly connected with drive rotating shaft in, is equipped with laser centering instrument measuring ware respectively above drive rotating shaft and main rotating shaft, and laser centering instrument measuring ware below is connected with fixed establishment, and one side of installation platform one is equipped with laser centering instrument controller of laser centering instrument measuring ware electric connection, the utility model discloses through quick -witted connection, adjustable clamping and height adjusting structure, realize laser centering instrument measuring ware quick assembly and disassembly, multi -shaft diameter adaptation and accurate centering, promote efficiency, versatility and detection accuracy.

Description

Technical Field

[0001] This utility model relates to the field of electric drive equipment testing technology, and in particular to a coaxial alignment device for an electric drive measuring machine. Background Technology

[0002] In the research and quality inspection processes of new energy vehicles, industrial motors, and other fields, electric drive measuring machines (such as electric drive dynamometers) are core equipment for testing the performance of components such as electric drive assemblies and drive motors. By docking with the shaft of the component under test, they simulate loads under different operating conditions to accurately measure key parameters such as output power, torque, and speed. The coaxiality of the two axes (the output shaft of the component under test and the input shaft of the electric drive measuring machine) directly affects the accuracy of the test data and can also cause equipment vibration and component wear due to misalignment. Therefore, coaxial alignment testing is a critical step in the use of electric drive measuring machines. Currently, the industry widely uses laser alignment instruments to achieve high-precision coaxiality testing. This equipment collects the position signals of the two axes through a transmitter and receiver, and combines geometric algorithms to calculate radial offset and angular deviation, providing data support for coaxial correction. It has become the mainstream alignment testing tool for electric drive measuring machines. However, the transmitter and receiver of existing laser alignment instruments are usually fixed to the shaft to be tested by a semi-circular clamp and bolt connection. This installation structure has obvious defects: during installation, the bolts need to be tightened one by one with the help of wrenches and other tools, and during disassembly, the bolts need to be loosened in the opposite direction. The operation steps are cumbersome, which reduces the efficiency of disassembly and assembly and cannot meet the needs of quick operation in batch testing scenarios. Utility Model Content

[0003] In order to overcome the defects of the prior art mentioned above, the inventors conducted in-depth research and, after a great deal of creative work, completed this utility model.

[0004] Specifically, the technical problem to be solved by this utility model is to provide a coaxial alignment device for an electric measuring machine, so as to solve the technical problem that the laser alignment instrument in the existing coaxial alignment device adopts a semi-circular clamp and bolt connection structure for the transmitting end and receiving end, which requires the use of tools to tighten and loosen the bolts, making the operation cumbersome and the disassembly and assembly inefficient, and failing to meet the needs of quick operation in batch testing scenarios.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: A coaxial alignment device for an electric dynamometer includes a base. Mounting platform 2 and mounting platform 1 are respectively located on the left and right sides of the top of the base. An electric dynamometer is housed within mounting platform 1, and its output end is connected to a main shaft on one side of mounting platform 1. An adjustment handle is rotatably mounted on the end of mounting platform 2 away from mounting platform 1, and the output end of the adjustment handle extends into mounting platform 2 and is connected to a drive shaft. One end of the drive shaft is connected to one end of the main shaft via a coupling. A laser alignment measuring instrument is respectively located above the drive shaft and the main shaft. A fixing mechanism is connected below the laser alignment measuring instrument. A laser alignment instrument controller, electrically connected to the laser alignment measuring instrument, is located on one side of mounting platform 1. The fixing mechanism includes clamp one and clamp two. Clamp one and clamp two are located on both sides of the main rotating shaft, and clamp one and clamp two are hinged at one end. Fixing block one and fixing block two are respectively connected to the same end of clamp one and clamp two. Clamping components are provided on the inner side of clamp two.

[0006] As an improved technical solution, the fixing mechanism further includes a connecting rod, which is disposed within fixing block one and fixing block two, and one end of the connecting rod is hinged to fixing block two. A cavity is formed inside the connecting rod, and a driving rod is slidably installed in the cavity. A pull rod is connected to one end of the driving rod. A spring and a baffle are sleeved on the outer side of one end of the pull rod, and the baffle is located on the side of the spring away from the driving rod and is fixedly connected to the inner wall of the cavity. The end of the pull rod away from the driving rod passes through the end of the connecting rod away from fixing block two. A through groove is symmetrically formed on the outer wall of the connecting rod, and a sliding groove is formed on the inner wall of the through groove. A limiting post is movably installed in the through groove, and a limiting ring is sleeved on the outer side of the limiting post in the sliding groove. A slot adapted to the limiting post is symmetrically formed on the inner wall of fixing block one. A pressing groove is formed on one side of the outer wall of the driving rod, and the pressing groove is located on the side of the through groove away from the pull rod.

[0007] As an improved technical solution, both ends of the limiting post are hemispherical, the driving rod is a columnar structure, the inner wall of the extrusion groove near the through groove is inclined, the pull rod is a T-shaped columnar structure, and a handle is connected to the outer end of the pull rod.

[0008] As an improved technical solution, the clamping assembly includes an arc-shaped plate, which is disposed between the second clamp and the main rotating shaft. A screw is rotatably connected to the top of the arc-shaped plate, and the lower end of the screw passes through the second clamp. The screw is threadedly connected to the second clamp. Guide rods are symmetrically provided at the bottom of the arc-shaped plate, and the guide rods pass through the second clamp.

[0009] As an improved technical solution, the screw and the clamp are concentric, and the inner wall of the arc plate and the inner wall of the clamp are respectively provided with a number of anti-slip rubber strips.

[0010] As an improved technical solution, the clamp is provided with symmetrical mounting rods at the top, and a slider is slidably sleeved on the outside of the mounting rod. A positioning bolt is threadedly connected to one side of the slider, and one end of the positioning bolt abuts against the outer wall of the mounting rod. The same side of the two sliders is connected to the laser alignment measuring instrument.

[0011] After adopting the above technical solution, the beneficial effects of this utility model are: 1. This utility model uses a quick connection structure with a pull rod, a drive rod, a spring and a limit post. Without the need for tools such as wrenches, the clamps one and two can be quickly locked and unlocked by simply pulling the handle and rotating the connecting rod. This greatly simplifies the installation and disassembly of the laser alignment instrument transmitter / receiver, effectively improves the efficiency of installation and disassembly, and meets the needs of quick use in batch testing scenarios.

[0012] 2. This utility model utilizes a screw-driven arc plate and a guide rod-guided clamping assembly, which allows for flexible adjustment of the distance between the arc plate and the clamp. This not only enhances the connection and fixing stability between the clamp and the main rotating shaft and the drive rotating shaft, but also adapts to the installation of shafts with various diameters, improving the versatility of the device and avoiding frequent replacement of the fixing mechanism due to differences in shaft diameter.

[0013] 3. This utility model uses a height adjustment structure composed of a mounting rod, a slider, and a positioning bolt to easily adjust the height position of the laser alignment instrument measuring device, ensuring that the transmitting end and the receiving end are on the same horizontal reference plane, guaranteeing the accuracy of coaxiality detection, while further improving the installation and adaptation flexibility of the device and reducing the difficulty of operation. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them: Figure 1 This is a schematic diagram of the overall structure of a coaxial alignment device for an electrically driven measuring machine according to this utility model.

[0015] Figure 2 This is a partial cross-sectional structural diagram of mounting platform one and mounting platform two of the coaxial alignment device for an electric-driven measuring machine according to the present invention.

[0016] Figure 3 This is a schematic diagram of the structure between clamp one, clamp two, main rotating shaft and laser alignment measuring instrument of a coaxial alignment device for an electric-driven measuring machine according to the present invention.

[0017] Figure 4This is a schematic diagram of the connection structure between clamp one and clamp two of the coaxial alignment device of an electric-driven measuring machine according to the present invention.

[0018] Figure 5 This utility model relates to a coaxial alignment device for an electrically driven measuring machine. Figure 4 A magnified structural diagram of point A in the middle.

[0019] Explanation of reference numerals in the attached figures: 1. Base; 2. Mounting Platform 1; 3. Mounting Platform 2; 4. Main Shaft; 5. Electric Drive Dynamometer; 6. Adjustment Handle; 7. Drive Shaft; 8. Laser Alignment Measuring Instrument; 9. Laser Alignment Instrument Controller; 10. Clamp 1; 11. Clamp 2; 12. Fixing Block 1; 13. Fixing Block 2; 14. Connecting Rod; 15. Drive Rod; 16. Pull Rod; 17. Spring; 18. Baffle; 19. Through Slot; 20. Slide Groove; 21. Limiting Post; 22. Limiting Ring; 23. Slot; 24. Extrusion Groove; 25. Arc Plate; 26. Screw; 27. Guide Rod; 28. Mounting Rod; 29. ​​Slider; 30. Positioning Bolt. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0022] Meanwhile, the meaning of "and / or" or "and / or" appearing throughout the text is that it includes three options. Taking "A and / or B" as an example, it includes option A, option B, or an option that satisfies both A and B.

[0023] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0024] like Figures 1 to 5 As shown in the figure, this embodiment provides a coaxial alignment device for an electric measuring machine. This coaxial alignment device for an electric measuring machine includes a base 1. Mounting platform 2 and mounting platform 3 are respectively located on the left and right sides of the top of the base 1. An electric dynamometer 5 is installed inside mounting platform 2, and the output end of the electric dynamometer 5 is connected to a main shaft 4 on one side of mounting platform 2. An adjusting handle 6 is rotatably mounted on the end of mounting platform 2 away from mounting platform 2, and the output end of the adjusting handle 6 extends into mounting platform 2 3 and is connected to a drive shaft 7. One end of the drive shaft 7 is connected to the main shaft 4 via a coupling. One end of the rotating shaft 4 is connected. In this example, the center lines of the drive rotating shaft 7 and the main rotating shaft 4 are on the same straight line. A laser alignment measuring instrument 8 is provided above the drive rotating shaft 7 and the main rotating shaft 4 respectively. A fixing mechanism is connected below the laser alignment measuring instrument 8. A laser alignment controller 9 electrically connected to the laser alignment measuring instrument 8 is provided on one side of the mounting platform 2. The position signals of the main rotating shaft 4 and the drive rotating shaft 7 can be accurately collected by the laser alignment measuring instrument 8. Combined with the laser alignment controller 9, high-precision detection of coaxiality can be achieved, providing reliable data support for the alignment and correction of the two axes.

[0025] The fixing mechanism includes clamp 10 and clamp 21, which are located on both sides of the main rotating shaft 4 and are hinged at one end. Fixing block 12 and fixing block 23 are respectively connected to the same end of clamp 10 and clamp 21. Clamping components are provided on the inner side of clamp 21. The position signals of the main rotating shaft 4 and the drive rotating shaft 7 can be accurately collected by the laser alignment measuring instrument 8. Combined with the laser alignment instrument controller 9, high-precision detection of coaxiality can be achieved, providing reliable data support for the alignment and correction of the two axes.

[0026] In this example, the fixing mechanism also includes a connecting rod 14, which is disposed within fixing block 12 and fixing block 2 13. One end of the connecting rod 14 is hinged to fixing block 2 13. A cavity is provided inside the connecting rod 14, and a drive rod 15 is slidably installed inside the cavity. One end of the drive rod 15 is connected to a pull rod 16. A spring 17 and a baffle 18 are sleeved on the outer side of one end of the pull rod 16. The baffle 18 is located on the side of the spring 17 away from the drive rod 15, and the baffle 18 is fixedly connected to the inner wall of the cavity. The end of the pull rod 16 away from the drive rod 15 passes through the end of the connecting rod 14 away from fixing block 2 13. Symmetrical openings are provided on the outer wall of the connecting rod 14. The groove 19 has a sliding groove 20 on its inner wall. A limiting post 21 is movably installed in the groove 19. A limiting ring 22 is fitted on the outer side of the limiting post 21 inside the sliding groove 20. The inner wall of the fixing block 12 has symmetrical slots 23 that are adapted to the limiting post 21. The outer wall of the drive rod 15 has a pressing groove 24, which is located on the side of the groove 19 away from the pull rod 16. Through the linkage of the pull rod 16, the drive rod 15, the spring 17 and the limiting post 21, the clamp 10 and clamp 21 can be quickly locked and unlocked without tools, which greatly simplifies the disassembly and assembly operation and improves the efficiency of use in batch testing scenarios.

[0027] In this example, both ends of the limiting post 21 are hemispherical, the drive rod 15 is a columnar structure, the inner wall of the extrusion groove 24 near the through groove 19 is inclined, and the pull rod 16 is a T-shaped columnar structure. The pull rod 16 is connected to a handle at one end outside the connecting rod 14. The hemispherical limiting post 21 and the inclined inner wall of the extrusion groove 24 can reduce relative motion resistance. The T-shaped pull rod 16 with the handle is easy to operate by hand, further improving the ease of disassembly and assembly.

[0028] like Figure 1 and Figure 3 As shown in this example, the clamping assembly includes an arc-shaped plate 25, which is disposed between the clamp 11 and the main rotating shaft 4. A screw 26 is rotatably connected to the top of the arc-shaped plate 25, and the lower end of the screw 26 passes through the clamp 11. The screw 26 is threadedly connected to the clamp 11. Guide rods 27 are symmetrically provided at the bottom of the arc-shaped plate 25, and the guide rods 27 pass through the clamp 11. The screw 26 drives the arc-shaped plate 25 to cooperate with the guide rods 27 for guidance, which can flexibly adjust the clamping distance. This not only enhances the connection stability with the main rotating shaft 4 and the drive rotating shaft 7, but also adapts to shafts of different diameters, improving the versatility of the device.

[0029] In this example, the screw 26 and the clamp 11 are concentric, and the inner walls of the arc plate 25 and the clamp 10 are respectively provided with several anti-slip rubber strips; the concentric design ensures that the arc plate 25 is subjected to uniform force, and the anti-slip rubber strips can increase the friction with the shaft, prevent the clamp from sliding relative to the shaft, and avoid scratching the surface of the shaft.

[0030] In this example, the top of the clamp 10 is symmetrically provided with mounting rods 28, and the outer side of the mounting rods 28 is slidably fitted with sliders 29. One side of the sliders 29 is threadedly connected with positioning bolts 30, and one end of the positioning bolts 30 abuts against the outer wall of the mounting rods 28. The same side of the two sliders 29 are connected to the laser alignment measuring device 8. The height adjustment structure composed of the mounting rods 28, sliders 29 and positioning bolts 30 can conveniently adjust the installation height of the laser alignment measuring device 8, ensuring that the transmitting end and the receiving end are on the same horizontal reference plane, and ensuring the accuracy of coaxiality detection.

[0031] In use, when the coaxial alignment device of this electric-driven measuring machine is working, firstly, the two sets of laser alignment measuring instruments 8 are respectively installed on the main rotating shaft 4 and the drive rotating shaft 7 through the fixing mechanism. One set is the transmitting end and the other set is the receiving end, and both are electrically connected to the laser alignment instrument controller 9. During installation and fixing, first open the hinged clamps 10 and 11, and put them on the outside of the corresponding shaft. Then pull the pull rod 16 to drive the drive rod 15 to slide in the cavity of the connecting rod 14. When the drive rod 15 is moved, it cooperates with the baffle 18 to compress the spring 17, causing the compression groove 24 to move to the position of the through groove 19; rotate the connecting rod 14 so that one end enters the fixed block 12, release the pull rod 16, and the spring 17 returns to its original position, pushing the drive rod 15 to move. The inclined surface of the compression groove 24 compresses the limiting post 21, causing it to drive the limiting ring 22 to slide in the sliding groove 20. Finally, the outer end of the limiting post 21 is inserted into the slot 23 of the fixed block 12, completing the quick locking of the clamp 10 and the clamp 21.

[0032] Then, rotate screw 26 to drive arc plate 25 to move towards the shaft under the limiting guidance of guide rod 27. The anti-slip rubber strip on the inner wall of clamp 10 ensures stable clamping of the shaft. Screw 26 can be adjusted to accommodate main shaft 4 or drive shaft 7 of different diameters. If the height of laser alignment measuring device 8 needs to be adjusted, twist positioning bolt 30 to separate it from mounting rod 28, drag slider 29 to move laser alignment measuring device 8 up and down to a suitable position, and then tighten positioning bolt 30 to fix the height, ensuring that the transmitting end and receiving end are on the same horizontal reference plane.

[0033] During testing, the drive shaft 7 is rotated by adjusting the handle 6, which in turn drives the main shaft 4 to rotate synchronously. The transmitting end of the laser alignment measuring instrument 8 emits a laser signal, and the receiving end collects the position signals during the rotation of the two shafts and transmits them to the laser alignment instrument controller 9. The controller calculates the radial offset and angular deviation between the main shaft 4 and the drive shaft 7 through a geometric algorithm to complete the coaxiality test. During disassembly, the pull rod 16 is pulled again to make the squeezing groove 24 correspond to the through groove 19. The inner wall of the slot 23 squeezes the limiting post 21 to reset it. Rotating the connecting rod 14 can release the clamp lock and realize the quick disassembly of the laser alignment measuring instrument 8.

[0034] It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. Furthermore, it should be understood that after reading the technical description of this utility model, those skilled in the art can make various alterations, modifications, and / or variations to this utility model, and all such equivalent forms also fall within the scope of protection defined by the appended claims.

Claims

1. A coaxial alignment device for an electrically driven measuring machine, comprising a base (1), characterized in that: The base (1) has a second mounting platform (3) and a first mounting platform (2) on the top left and right respectively. The first mounting platform (2) has an electric dynamometer (5) inside, and the output end of the electric dynamometer (5) is connected to a main shaft (4) on one side of the first mounting platform (2). The second mounting platform (3) has an adjustment handle (6) rotatably mounted on one end away from the first mounting platform (2), and the output end of the adjustment handle (6) extends into the second mounting platform (3) and is connected to a drive shaft (7). One end of the drive shaft (7) is connected to one end of the main shaft (4) through a coupling. The drive shaft (7) and the main shaft (4) are respectively equipped with laser alignment measuring instruments (8) above them. The laser alignment measuring instruments (8) are connected to a fixing mechanism below them. The first mounting platform (2) has a laser alignment instrument controller (9) electrically connected to the laser alignment measuring instruments (8) on one side. The fixing mechanism includes clamp one (10) and clamp two (11). Clamp one (10) and clamp two (11) are located on both sides of the main rotating shaft (4), and clamp one (10) and clamp two (11) are hinged at one end. The same end of clamp one (10) and clamp two (11) are respectively connected to fixing block one (12) and fixing block two (13). Clamping components are provided on the inner side of clamp two (11).

2. The coaxial alignment device for an electrically driven measuring machine according to claim 1, characterized in that: The fixing mechanism also includes a connecting rod (14), which is disposed within the fixing block one (12) and the fixing block two (13). One end of the connecting rod (14) is hinged to the fixing block two (13). A cavity is provided inside the connecting rod (14), and a driving rod (15) is slidably installed in the cavity. One end of the driving rod (15) is connected to a pull rod (16). A spring (17) and a baffle (18) are sleeved on the outer side of one end of the pull rod (16). The baffle (18) is located on the side of the spring (17) away from the driving rod (15), and the baffle (18) is fixedly connected to the inner wall of the cavity. The pull rod (16) is away from the driving rod. One end of the rod (15) passes through the end of the connecting rod (14) away from the second fixed block (13). The outer wall of the connecting rod (14) is symmetrically provided with through grooves (19). The inner wall of the through groove (19) is provided with a sliding groove (20). A limiting post (21) is movably installed in the through groove (19). A limiting ring (22) is sleeved on the outside of the limiting post (21) inside the sliding groove (20). The inner wall of the first fixed block (12) is symmetrically provided with slots (23) that are adapted to the limiting post (21). One side of the outer wall of the driving rod (15) is provided with a pressing groove (24), and the pressing groove (24) is located on the side of the through groove (19) away from the pull rod (16).

3. The coaxial alignment device for an electrically driven measuring machine according to claim 2, characterized in that: Both ends of the limiting post (21) are hemispherical, the driving rod (15) is a columnar structure, the inner wall of the extrusion groove (24) near the through groove (19) is inclined, the pull rod (16) is a T-shaped columnar structure, and the pull rod (16) is connected to a handle at one end outside the connecting rod (14).

4. The coaxial alignment device for an electrically driven measuring machine according to claim 3, characterized in that: The clamping assembly includes an arc plate (25), which is disposed between the clamp two (11) and the main rotating shaft (4). A screw (26) is rotatably connected to the top of the arc plate (25), and the lower end of the screw (26) passes through the clamp two (11). The screw (26) is threadedly connected to the clamp two (11). Guide rods (27) are symmetrically provided at the bottom of the arc plate (25), and the guide rods (27) pass through the clamp two (11).

5. The coaxial alignment device for an electrically driven measuring machine according to claim 4, characterized in that: The screw (26) and the second clamp (11) are concentric, and the inner wall of the arc plate (25) and the inner wall of the first clamp (10) are respectively provided with a number of anti-slip rubber strips.

6. The coaxial alignment device for an electrically driven measuring machine according to claim 2, characterized in that: The top of the clamp (10) is symmetrically provided with mounting rods (28), and the outer side of the mounting rod (28) is provided with a sliding block (29). One side of the sliding block (29) is threaded with a positioning bolt (30), and one end of the positioning bolt (30) abuts against the outer wall of the mounting rod (28). The same side of the two sliding blocks (29) is connected to the laser alignment measuring instrument (8).

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