Impeller dynamic balance detection device

Abstract

The present invention provides a dynamic balance detection device for an impeller guide wheel, which belongs to the technical field of impeller guide wheel production, and comprises a detection table, on which a detection seat for placing the impeller guide wheel is fixedly arranged, and a correction component is arranged on the detection seat; before the dynamic balance detection of the impeller guide wheel is performed, a first motor can be started, and then with the cooperation of the correction component, a plurality of limit plates are made to be in close contact with the outer wall of the impeller guide wheel, so that the position of the impeller guide wheel can be adjusted so that the central axis thereof is aligned with the central axis of the motor shaft of the second motor, thereby ensuring the accurate position of the impeller guide wheel during the detection process, so that the sensor can accurately capture the vibration of the impeller guide wheel during rotation, which helps to eliminate the measurement error caused by the position deviation and improve the accuracy of the detection result; with the continuous driving of the first motor, the plurality of limit plates can be separated from the outer wall of the impeller guide wheel to facilitate the subsequent dynamic balance detection of the impeller guide wheel.

Description

Technical Field

[0001] The invention relates to the technical field of impeller production, and in particular to an impeller dynamic balance detection device. Background Art

[0002] An impeller is a rotating or fixed device containing multiple blades. These blades are designed with specific shapes and angles to produce the desired flow effect when the fluid or medium passes through. In rotating applications, the impeller is usually driven by a motor or other power source to push or guide the fluid through the rotation of the blades. In fixed applications, the impeller acts as a fixed part in the fluid path and affects the flow direction and speed of the fluid through the shape and layout of its blades.

[0003] In order to ensure that the impeller can operate stably when rotating at high speed, it is usually necessary to use a detection device to perform dynamic balancing detection.

[0004] There are dynamic balance detection devices in the prior art, for example, a Chinese patent with authorization announcement number CN218584265U discloses a D2 type high nickel ductile iron dynamic balance detection device for a blade guide wheel, which includes a bottom plate and a side plate, a motor is welded on one side of the side plate, one end of the motor includes a motor shaft, a rotating cylinder is nested on the peripheral side of the motor shaft, two telescopic cylinders are welded on the peripheral side of the rotating cylinder, a telescopic hole is opened inside the telescopic cylinder, and a telescopic column is inserted inside the telescopic hole. By setting the telescopic cylinder and the telescopic column, the blade guide wheel to be detected can be nested in the peripheral side of the arc-shaped curved plate through the motor shaft, and then the telescopic column is slid according to the inner diameter of the blade guide wheel so that the arc-shaped curved plate can hold the inner peripheral side of the blade guide wheel against and fix it, and the motor is started to drive the blade guide wheel to rotate. During the rotation process, the distance measuring device records whether the distance changes during the rotation process, so as to judge whether the rotation state of the blade guide wheel can reach a balanced state.

[0005] However, the above patent still has certain shortcomings. Before the impeller is inspected, the above scheme needs to use a specific clamping device to clamp the impeller and make the center axis of the impeller accurately aligned with the center axis of the motor shaft. When the clamping position deviates, the position of the center axis of the motor shaft and the center axis of the impeller will deviate, which will lead to poor dynamic balance of the impeller and cause large vibration of the equipment during operation. This vibration will not only affect the operating efficiency of the equipment, but may also damage the structure of the equipment. If the detection device does not perform position correction, it will not be able to detect and correct the dynamic balance problem of the impeller in time, thereby aggravating the vibration of the equipment. Summary of the invention

[0006] The object of the present invention is to provide a dynamic balance detection device for an impeller, so as to solve the problem in the prior art that it is difficult to correct the detection position of the impeller.

[0007] In order to solve the above technical problems, the present invention specifically provides the following technical solutions:

[0008] The impeller dynamic balance detection device comprises a detection platform, on which a detection seat for placing the impeller is fixedly arranged, and a position correction component is arranged on the detection seat;

[0009] The correction assembly includes a first motor installed at the bottom end of the detection seat, the output end of the first motor is connected to a fixed cylinder through a rotating shaft, the top of the fixed cylinder is fixedly provided with a transmission disk rotatably connected to the detection seat, a plurality of guide rods are slidably arranged on the top of the transmission disk, and a plurality of straight slide grooves matching the guide rods are opened on the top of the detection seat, the top of each guide rod passes through the straight slide groove and extends above it, a support plate is fixedly arranged on the top of each guide rod, a telescopic rod is installed on the side of each support plate away from the impeller guide wheel, and a limiting plate is fixedly arranged on the output end of each telescopic rod.

[0010] Preferably, a plurality of arcuate grooves matching the guide rods are formed at the top of the transmission disc, and the plurality of arcuate grooves are distributed in a ring array about the central axis of the transmission disc.

[0011] Preferably, a lower limit assembly is provided inside the detection seat, a threaded shaft is fixedly provided on the fixed cylinder, and the threaded shaft is located at the center position of the top end of the fixed cylinder, the lower limit assembly includes a threaded cylinder sleeved on the outside of the threaded shaft, and the threaded cylinder and the threaded shaft are connected by a thread, the top bearing of the threaded cylinder is connected to a lower rubber cone cylinder, when each limit plate is in contact with the outer wall of the impeller guide wheel, the top end of the lower rubber cone cylinder can contact the bottom end of the impeller guide wheel, the threaded cylinder is provided in the detection seat, and the threaded cylinder and the detection seat are slidably matched in the vertical direction.

[0012] Preferably, a fixing seat is fixedly provided at the top of the detection platform on one side of the impeller, and a dynamic balancing distance measuring device is installed on the side of the fixing seat close to the impeller.

[0013] Preferably, an upper limit driving assembly is provided at the top of the fixed seat, and the upper limit driving assembly includes a support frame fixed to the top of the fixed seat, a hydraulic rod is installed at the top of the support frame, a guide cylinder is fixedly provided at the top of the fixed seat on the inner side of the support frame, a mounting cylinder is slidably provided in the guide cylinder, a motor frame is fixedly provided at the top of the mounting cylinder, the output end of the hydraulic rod is fixedly connected to the top of the motor frame, a second motor is installed inside the motor frame, the output end of the second motor is fixedly connected to a hydraulic column through a rotating shaft, the bottom end of the mounting cylinder is connected to an upper rubber cone cylinder fixedly connected to the top of the hydraulic column, the interior of the hydraulic column is hollow, and a plurality of rubber limit plates extending to the outside of the hydraulic column are slidably provided on the inner wall of the hydraulic column, a piston plate extending below the hydraulic column is slidably provided on the inner wall of the hydraulic column, a polygonal block is fixedly provided at the bottom end of the piston plate, and hydraulic oil is provided above the polygonal block in the hydraulic column.

[0014] Preferably, a return spring is fixedly arranged between the top end of the polygonal block and the bottom end of the hydraulic column, a plug-in groove matching the polygonal block is provided at the top end of the lower rubber cone, a plurality of rubber limit plates are distributed in a ring array about the central axis of the hydraulic column, a plurality of rubber limit plates are in contact with the inner wall of the through hole provided at the axis of the impeller guide wheel, and a plurality of movable through grooves matching the plurality of rubber limit plates are provided on the hydraulic column.

[0015] Preferably, transmission devices are provided on both sides of the detection platform, and both transmission devices are used to transmit the impeller.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. Before the dynamic balance test of the impeller is performed on the impeller, the present invention can start the first motor, and then, with the cooperation of the position correction component, make multiple limit plates close to the outer wall of the impeller, and adjust the position of the impeller so that its central axis is aligned with the central axis of the motor shaft of the second motor, thereby ensuring the accurate position of the impeller during the test, so that the sensor can accurately capture the vibration of the impeller during rotation, which helps to eliminate the measurement error caused by position deviation and improve the accuracy of the test result. With the continuous driving of the first motor, the multiple limit plates can be separated from the outer wall of the impeller, so as to facilitate the subsequent dynamic balance test of the impeller;

[0018] 2. When the present invention performs dynamic balancing detection on the impeller, the first motor can be started, and with the cooperation of the lower limit assembly, the lower rubber cone can be brought into contact with the bottom end of the impeller and the impeller can be pushed up. Then, with the cooperation of the upper limit drive assembly, the bottom end of the upper rubber cone can be brought into contact with the top end of the impeller. At the same time, a plurality of rubber limit plates can be brought into contact with the inner wall of the impeller, and the polygonal block can be engaged with the plug-in groove provided at the top end of the lower rubber cone, which can achieve the purpose of limiting and effectively prevent the impeller from falling off during the dynamic balancing detection process, thereby greatly improving the safety of the dynamic balancing detection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the front structure of the detection platform of the present invention;

[0022] Figure 3 It is a schematic diagram of the partial structure of the front side of the detection platform of the present invention;

[0023] Figure 4 for Figure 3 A partial enlarged view of middle A;

[0024] Figure 5 It is a schematic diagram of the connection structure between the transmission plate and the guide rod of the present invention;

[0025] Figure 6 It is a schematic diagram of the connection structure between the limit plate and the guide rod of the present invention;

[0026] Figure 7 This is a front perspective view of the upper limit drive assembly of the present invention;

[0027] Figure 8 It is a schematic diagram of the connection structure between the polygonal block and the lower rubber cone cylinder of the present invention;

[0028] Fig. 9 It is a front cross-sectional view of the upper limit driving assembly of the present invention;

[0029] Fig.10 for Figure 3 A partial enlarged view of B in the middle;

[0030] Fig.11It is a schematic diagram of the connection structure between the hydraulic column and the rubber limiting plate of the present invention.

[0031] In the figure: 1. test bench; 11. test seat; 12. fixed seat; 13. impeller; 14. transmission equipment;

[0032] 2. Position correction assembly; 21. Threaded shaft; 22. Fixed cylinder; 23. Transmission plate; 231. Arc groove; 24. Guide rod; 241. Straight slide groove; 25. Support plate; 26. Telescopic rod; 27. Limit plate;

[0033] 3. Lower limit assembly; 31. Threaded cylinder; 32. Lower rubber cone cylinder; 321. Plug-in slot;

[0034] 4. Upper limit drive assembly; 41. Support frame; 42. Guide cylinder; 43. Hydraulic rod; 44. Motor frame; 45. Mounting cylinder; 46. Upper rubber cone cylinder; 47. Hydraulic column; 471. Rubber limit plate; 48. Polygonal block; 481. Piston plate. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] like Figures 1 to 11 As shown, the present invention provides a dynamic balance detection device for a blade guide wheel, comprising a detection platform 1, on which a detection seat 11 for placing a blade guide wheel 13 is fixedly arranged, and a position correction component 2 is arranged on the detection seat 11;

[0037] The positioning correction component 2 includes a first motor installed at the bottom end of the detection seat 11, and the output end of the first motor is connected to a fixed cylinder 22 through a rotating shaft. A transmission disk 23 rotatably connected to the detection seat 11 is fixedly arranged on the top of the fixed cylinder 22, and a plurality of guide rods 24 are slidably arranged on the top of the transmission disk 23. A plurality of straight slide grooves 241 matching the guide rods 24 are opened on the top of the detection seat 11, and the top of each guide rod 24 passes through the straight slide groove 241 and extends above it. A support plate 25 is fixedly arranged on the top of each guide rod 24, and a telescopic rod 26 is installed on the side of each support plate 25 away from the impeller 13, and a limiting plate 27 is fixedly arranged on the output end of each telescopic rod 26.

[0038] A plurality of arcuate grooves 231 matching the guide rods 24 are formed at the top of the transmission disc 23 , and the plurality of arcuate grooves 231 are distributed in a ring array about the central axis of the transmission disc 23 .

[0039] When the position of the impeller 13 at the top of the detection seat 11 is corrected, the first motor can be started to drive the fixed cylinder 22 set at its output end to rotate, and at the same time drive the transmission plate 23 fixed at the top of the fixed cylinder 22 to rotate. Since the multiple guide rods 24 slidably connected to the transmission plate 23 all slide in the multiple straight slide grooves 241 at the same time, and since the detection seat 11 is in a stationary state relative to the transmission plate 23, the setting of the multiple straight slide grooves 241 can simultaneously limit the sliding direction of the corresponding guide rods 24, and the multiple arc grooves 231 opened at the end of the transmission plate 23 can drive the multiple guide rods 24 to slide in the direction close to the impeller 13 at the same time, and can drive the multiple support plates 25 to move toward the impeller 13 located at the top of the detection seat 11, and then drive the multiple sets of telescopic rods 26 and the limiting plates 27 to move toward the impeller 13. When the multiple guide rods 24 slide to the position of the impeller 13 at the top of the detection seat 11 in the arc groove 231 at the same time, At the same time, multiple limit plates 27 are in contact with the outer wall of the impeller 13 at the top of the detection seat 11. At this time, if the guide rod 24 drives the limit plate 27 to continue to move toward the impeller 13, the limit plate 27 hits the outer side of the impeller 13 and cannot move, and the telescopic rod 26 fixed between the limit plate 27 and the support plate 25 can be compressed. At the same time, multiple limit plates 27 are tightly attached to the outer wall of the impeller 13 at the same time, so as to correct the position of the impeller 13, and the function of the telescopic rod 26 is to adapt to impellers 13 of different diameters. With the continuous driving of the first motor, with the cooperation of the correction component 2, the multiple guide rods 24 continue to slide in the multiple arc grooves 231 respectively. Under the limitation of the multiple straight grooves 241, the multiple guide rods 24 gradually move away from the impeller 13 at the top of the detection seat 11, and then the multiple limit plates 27 are separated from the impeller 13 at the top of the detection seat 11, so as to facilitate the subsequent dynamic balance detection of the impeller 13.

[0040] In this embodiment, a lower limit assembly 3 is provided inside the detection seat 11, a threaded shaft 21 is fixedly provided on the fixed cylinder 22, and the threaded shaft 21 is located at the top center position of the fixed cylinder 22, the lower limit assembly 3 includes a threaded cylinder 31 sleeved on the outside of the threaded shaft 21, and the threaded cylinder 31 is connected to the threaded shaft 21 by a thread, and the top bearing of the threaded cylinder 31 is connected to a lower rubber cone cylinder 32, when each limit plate 27 is in contact with the outer wall of the periphery of the impeller 13, the top end of the lower rubber cone cylinder 32 can be in contact with the bottom end of the impeller 13, the threaded cylinder 31 is provided in the detection seat 11, and the threaded cylinder 31 and the detection seat 11 are slidably matched in the vertical direction.

[0041] A fixing seat 12 is fixedly provided at the top of the testing platform 1 on one side of the impeller 13 , and a dynamic balancing distance measuring device is installed on the side of the fixing seat 12 close to the impeller 13 .

[0042] An upper limit driving assembly 4 is provided at the top of the fixed seat 12, and the upper limit driving assembly 4 includes a support frame 41 fixed to the top of the fixed seat 12, a hydraulic rod 43 is installed at the top of the support frame 41, a guide cylinder 42 is fixedly provided on the inner side of the support frame 41 at the top of the fixed seat 12, a mounting cylinder 45 is slidably provided in the guide cylinder 42, a motor frame 44 is fixedly provided on the top of the mounting cylinder 45, an output end of the hydraulic rod 43 is fixedly connected to the top of the motor frame 44, a second motor is installed inside the motor frame 44, a hydraulic column 47 is fixedly connected to the output end of the second motor through a rotating shaft, an upper rubber cone cylinder 46 fixedly connected to the top of the hydraulic column 47 is connected to the bearing at the bottom end of the mounting cylinder 45, the interior of the hydraulic column 47 is hollow, a plurality of rubber limit plates 471 extending to the outside of the hydraulic column 47 are slidably provided on the inner wall of the hydraulic column 47, a piston plate 481 extending below the hydraulic column 47 is slidably provided on the inner wall of the hydraulic column 47, a polygonal block 48 is fixedly provided on the bottom end of the piston plate 481, and hydraulic oil is provided above the polygonal block 48 in the hydraulic column 47.

[0043] A return spring is fixedly arranged between the top of the polygonal block 48 and the bottom of the hydraulic column 47. A plug-in groove 321 matching the polygonal block 48 is provided at the top of the lower rubber cone 32. A plurality of rubber limit plates 471 are distributed in a ring array about the central axis of the hydraulic column 47. The plurality of rubber limit plates 471 are all in contact with the inner wall of the through hole provided at the axis of the impeller 13. A plurality of movable through grooves matching the plurality of rubber limit plates 471 are provided on the hydraulic column 47.

[0044] Conveying devices 14 are provided on both sides of the inspection platform 1 , and the two conveying devices 14 are used to convey the impeller 13 .

[0045] Driven by the first motor and in cooperation with the position correction component 2, the position of the impeller 13 at the top of the detection seat 11 is corrected. At the same time, the first motor drives the fixed cylinder 22 to rotate, and drives the threaded shaft 21 fixed on the fixed cylinder 22 to rotate, and then drives the threaded cylinder 31 threadedly connected to the threaded shaft 21 to move upward in the detection seat 11, and drives the lower rubber cone cylinder 32 connected to the top bearing of the threaded cylinder 31 to move upward. When multiple limit plates 27 contact the outer wall of the impeller 13 at the top of the detection seat 11, the lower rubber cone cylinder 32 is below the impeller 13 and the two are not in contact for the time being. When the position correction component 2 completes the positioning of the impeller 13 and starts to move away from the impeller 13, that is, the guide rod 24 passes over the top of the arc groove 231 (refer to Figure 5When the upper and lower ends of the plurality of limit plates 27 are completely separated from the outer wall of the impeller 13 at the top of the detection seat 11, the lower rubber cone cylinder 32 contacts the bottom end of the impeller 13 and pushes the impeller 13 to rise. At the same time, the hydraulic rod 43 has also started to work. The hydraulic rod 43 drives the motor frame 44 fixed at its output end to move downward, and at the same time drives the mounting cylinder 45 fixed at the bottom end of the motor frame 44 to slide on the inner wall of the guide cylinder 42. At the same time, the upper rubber cone cylinder 46, the hydraulic column 47, the piston plate 481 and the polygonal block 48 can be driven to descend at the same time. In this process, the outer wall of the polygonal block 48 can be engaged with the plug-in groove 321 opened at the end of the lower rubber cone cylinder 32. With the continuous driving of the hydraulic rod 43, the bottom end of the polygonal block 48 is tightly attached to the bottom of the plug-in groove 321, resulting in the polygonal block 48 and the piston plate 481 being inseparable. The method continues to move. At this time, the hydraulic column 47, which is slidably connected to the piston plate 481, continues to move toward the lower rubber cone cylinder 32 under the drive of the hydraulic rod 43. At this time, the piston plate 481 slides on the inner wall of the hydraulic column 47. At this time, the hydraulic oil inside the hydraulic column 47 is squeezed into multiple movable grooves, and the hydraulic oil simultaneously pushes multiple rubber limit plates 471 to slide from the inside of the hydraulic column 47 to the outside thereof. When the bottom end of the hydraulic column 47 contacts the top of the polygonal block 48, multiple rubber limit plates 471 respectively contact the inner wall of the impeller 13 at the same time to achieve the purpose of limiting. At this time, by starting the second motor inside the motor frame 44, the hydraulic column 47 fixed at the output end of the second motor is driven to rotate, and at the same time, multiple rubber limit plates 471, the upper rubber cone cylinder 46 and the lower rubber cone cylinder 32 are driven to rotate. At this time, the dynamic balancing distance measuring equipment is started to perform dynamic balancing detection on the impeller 13 located at the top of the detection seat 11.

[0046] The working principle of this device is as follows: by starting the transmission device 14, the impeller 13 at its top is driven to move to the top of the detection seat 11, and then by starting the first motor, the fixed cylinder 22 set at its output end is driven to rotate, and the transmission disk 23 fixed at the top of the fixed cylinder 22 is driven to rotate. Since the multiple guide rods 24 slidably connected to the transmission disk 23 all slide in the multiple straight slide grooves 241 at the same time, and since the detection seat 11 is in a stationary state relative to the transmission disk 23, the setting of the straight slide grooves 241 can limit the sliding direction of the guide rods 24 corresponding thereto, and the multiple arc grooves 231 opened at the end of the transmission disk 23 drive the multiple guide rods 24 to slide in the direction close to the impeller 13 at the same time, and drive the multiple support plates 25 to move in the direction of the impeller 13 located at the top of the detection seat 11, and then drive the multiple sets of telescopic rods 26 and the limit plates 27 to move in the direction of the impeller 13. When the multiple guide rods 24 slide to the arc grooves 231 at the same time, When the groove 231 is at the closest position to the impeller 13 located at the top of the detection seat 11, multiple limit plates 27 are in contact with the outer wall of the impeller 13 at the top of the detection seat 11. At this time, the telescopic rod 26 fixed between the limit plate 27 and the support plate 25 can be compressed, so that multiple limit plates 27 are in close contact with the outer wall of the impeller 13 at the same time. At the same time, the driving of the first motor drives the fixing cylinder 22 to rotate, thereby driving the threaded shaft 21 fixed on the fixing cylinder 22 to rotate, and then drives the threaded cylinder 31 threadedly connected with the threaded shaft 21 to move upward in the detection seat 11, so that the lower rubber cone cylinder 32 moves upward. When multiple limit plates 27 are in contact with the outer wall of the impeller 13 at the top of the detection seat 11, the lower rubber cone cylinder 32 is below the impeller 13 and is in a separated state. When the correction assembly 2 completes the positioning of the impeller 13 and starts to move away from the impeller 13, that is, the guide rod 24 passes over the top of the arc groove 231 (refer to Figure 5When the upper and lower ends of the upper and lower ends of the upper and lower ends of the lower and upper ... The hydraulic column 47 is in sliding connection with the piston plate 481 and can be driven by the hydraulic rod 43 to continuously move toward the lower rubber cone cylinder 32. At this time, the piston plate 481 slides on the inner wall of the hydraulic column 47. At this time, the hydraulic oil inside the hydraulic column 47 can retreat into multiple movable grooves, and can simultaneously push multiple rubber limit plates 471 to slide from the inside of the hydraulic column 47 to the outside thereof. When the bottom end of the hydraulic column 47 contacts the top of the polygonal block 48, multiple rubber limit plates 471 contact the inner wall of the impeller 13 at the same time, which can achieve the purpose of limiting. At this time, the second motor inside the motor frame 44 is started to drive the hydraulic column 47 fixed at the output end of the second motor to rotate, so as to drive multiple rubber limit plates 471, the upper rubber cone cylinder 46 and the lower rubber cone cylinder 32 to rotate, and then the dynamic balancing distance measuring equipment is started to perform dynamic balancing detection on the impeller 13 located at the top of the detection seat 11.

[0047] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and its core ideas of this application. The above is only the preferred implementation method of this application. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of this application, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the concept and technical solution of the invention to other occasions without improvement, should be regarded as the scope of protection of this application.

Claims

1. A device for detecting dynamic balance of a guide wheel, comprising a detection platform (1), characterized in that: A detection seat (11) for placing the impeller guide wheel (13) is fixedly arranged on the detection platform (1), and a position correction component (2) is arranged on the detection seat (11); The positioning assembly (2) comprises a first motor mounted at the bottom end of the detection seat (11); the output end of the first motor is connected to a fixed cylinder (22) via a rotating shaft; a transmission disk (23) is fixedly arranged at the top end of the fixed cylinder (22) and is rotatably connected to the detection seat (11); a plurality of guide rods (24) are slidably connected to the top end of the transmission disk (23); a plurality of straight slide grooves (241) matching the guide rods (24) are provided at the top end of the detection seat (11); the top end of each guide rod (24) passes through the straight slide groove (241) and extends above the straight slide groove; a support plate (25) is fixedly arranged at the top end of each guide rod (24); a telescopic rod (26) is installed on the side of each support plate (25) away from the impeller (13); and a limiting plate (27) is fixedly arranged at the output end of each telescopic rod (26); A lower limit assembly (3) is arranged inside the detection seat (11); a threaded shaft (21) is fixedly arranged on the fixing cylinder (22), and the threaded shaft (21) is located at the center of the top end of the fixing cylinder (22); the lower limit assembly (3) comprises a threaded cylinder (31) sleeved on the outside of the threaded shaft (21), and the threaded cylinder (31) and the threaded shaft (21) are connected via threads; the top end of the threaded cylinder (31) is connected to a lower rubber cone cylinder (32) via a bearing; when each limit plate (27) contacts the outer wall of the impeller guide wheel (13), the top end of the lower rubber cone cylinder (32) contacts the bottom end of the impeller guide wheel (13); the threaded cylinder (31) is arranged in the detection seat (11), and the threaded cylinder (31) and the detection seat (11) are slidably matched in the vertical direction.

2. The blade guide wheel dynamic balance detection device according to claim 1, characterized in that: A plurality of arcuate grooves (231) matching the guide rods (24) are formed at the top of the transmission disc (23), and the plurality of arcuate grooves (231) are distributed in a ring array about the central axis of the transmission disc (23).

3. The blade guide wheel dynamic balance detection device according to claim 1, characterized in that: A fixing seat (12) located on one side of the impeller (13) is fixedly provided at the top of the detection platform (1), and a dynamic balancing distance measuring device is installed on the side of the fixing seat (12) close to the impeller (13).

4. The blade guide wheel dynamic balance detection device according to claim 3, characterized in that: An upper limit drive assembly (4) is arranged at the top of the fixed seat (12), and the upper limit drive assembly (4) comprises a support frame (41) fixed to the top of the fixed seat (12), a hydraulic rod (43) is installed at the top of the support frame (41), a guide cylinder (42) located inside the support frame (41) is fixedly arranged at the top of the fixed seat (12), a mounting cylinder (45) is slidably arranged inside the guide cylinder (42), a motor frame (44) is fixedly arranged at the top of the mounting cylinder (45), an output end of the hydraulic rod (43) is fixedly connected to the top of the motor frame (44), and a motor frame (44) is installed inside the motor frame (44). A second motor, wherein the output end of the second motor is fixedly connected to a hydraulic column (47) via a rotating shaft, the bottom end of the mounting cylinder (45) is connected to an upper rubber cone cylinder (46) fixedly connected to the top end of the hydraulic column (47) via a bearing, the interior of the hydraulic column (47) is hollow, a plurality of rubber limit plates (471) extending to the outside of the hydraulic column (47) are slidingly arranged on the inner wall of the hydraulic column (47), a piston plate (481) extending below the hydraulic column (47) is slidingly arranged on the inner wall of the hydraulic column (47), a polygonal block (48) is fixedly arranged at the bottom end of the piston plate (481), and hydraulic oil located above the polygonal block (48) is arranged inside the hydraulic column (47).

5. The blade guide wheel dynamic balance detection device according to claim 4, characterized in that: A return spring is fixedly arranged between the top end of the polygonal block (48) and the bottom end of the hydraulic column (47); a plug-in slot (321) matching the polygonal block (48) is provided at the top end of the lower rubber cone (32); a plurality of rubber limit plates (471) are distributed in a ring array about the central axis of the hydraulic column (47); the plurality of rubber limit plates (471) are in contact with the inner wall of a through hole provided at the axis of the impeller guide wheel (13); and a plurality of movable through slots matching the plurality of rubber limit plates (471) are provided on the hydraulic column (47).

6. The blade guide wheel dynamic balance detection device according to claim 1, characterized in that: Transmission devices (14) are provided on both sides of the inspection platform (1), and the two transmission devices (14) are used to transmit the impeller (13).

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