Centrifugal compressor impeller assembly device and assembly method thereof

Abstract

This invention relates to a centrifugal compressor impeller assembly device and method, comprising: a support mechanism mounted on a horizontal surface; a hydraulic mechanism fixedly mounted on the upper end of the support mechanism; a lower fixing mechanism and a supply mechanism slidably mounted on the support mechanism; an upper fixing mechanism slidably connected to the support mechanism and fixedly connected to the hydraulic mechanism below the hydraulic mechanism; the lower fixing mechanism for fixing the rotating shaft; the upper fixing mechanism for fixing the impeller; and the supply mechanism for supplying the fixed impeller to the upper fixing mechanism; further comprising: a control mechanism for automated control. The centrifugal compressor impeller assembly device and method of this invention automatically positions the impeller for more accurate alignment; and assembles it in one go, preventing damage to the impeller and rotating shaft.

Description

Technical Field

[0001] This invention relates to the field of compressor manufacturing technology, and in particular to a centrifugal compressor impeller assembly device and assembly method. Background Technology

[0002] A compressor is a device that compresses gas to higher pressures and is a key piece of equipment commonly used in the industrial, refrigeration, air conditioning, and chemical industries. Based on their working principle and structural characteristics, compressors can be classified into: reciprocating, screw, centrifugal, scroll, and expansion compressors. Among them, centrifugal compressors utilize a rotating centrifugal impeller to accelerate and compress gas to higher pressures, and are widely used in high-flow-rate and medium- to high-pressure industrial compression and manufacturing processes.

[0003] Currently, centrifugal compressors use an interference fit between the impeller and the shaft. Therefore, the impeller is mounted on the end of the shaft using a heat-shrink fitting process and secured coaxially using a key-pin structure. However, this conventional impeller and shaft assembly method still has the following shortcomings:

[0004] 1. The impeller is manually aligned. At this time, the impeller is heated, which causes the keyway to misalign, so a second alignment is required.

[0005] 2. Applying heat by manually hammering will damage the impeller and shaft, disrupt the dynamic balance of the impeller, and reduce its service life. Summary of the Invention

[0006] To address the technical problems existing in the background art, the present invention provides a centrifugal compressor impeller assembly device and assembly method, which automatically positions the impeller for more accurate alignment; and assembles it in one go to prevent damage to the impeller and shaft.

[0007] The technical solution adopted by this invention is:

[0008] Centrifugal compressor impeller assembly, including:

[0009] A support mechanism is installed on a horizontal ground. A hydraulic mechanism is fixedly installed at the upper end of the support mechanism. A lower fixing mechanism and a supply mechanism are slidably installed on the support mechanism. An upper fixing mechanism is installed below the hydraulic mechanism and is slidably connected to the support mechanism and fixedly connected to the hydraulic mechanism. The lower fixing mechanism is used to fix the rotating shaft. The upper fixing mechanism is used to fix the impeller. The supply mechanism is used to supply the impeller to the upper fixing mechanism.

[0010] Also includes:

[0011] Control mechanisms used for automated control.

[0012] Furthermore, the support mechanism includes:

[0013] A support base is installed on a horizontal ground. A sliding rod assembly and a slide rail are fixedly installed on the upper surface of the support base. The sliding rod assembly is located at the four corners of the support base and extends upward. The slide rail extends in the left and right directions. An operating panel is installed on the left or right side wall of the support base. A lower trigger is installed at the front edge of the upper surface of the support base. The operating panel and the lower trigger are electrically connected to the control mechanism.

[0014] Furthermore, the hydraulic mechanism includes:

[0015] A fixed plate is fixedly connected to the upper end of the slide bar assembly. A hydraulic cylinder electrically connected to the control mechanism is provided in the middle of the fixed plate. The stroke end of the hydraulic cylinder passes through the fixed plate and extends downward.

[0016] Furthermore, an upper trigger is provided at the front edge of the lower end face of the fixing plate, and the upper trigger is positioned directly above the lower trigger and they are matched.

[0017] Furthermore, the lower fixing mechanism includes:

[0018] A lower drive platform is slidably mounted on a slide rail extending in the left-right direction. The lower drive platform is electrically connected to a control mechanism. A lower chuck for clamping and fixing the rotating shaft is rotatably mounted on the upper end of the lower drive platform. A lower translation cylinder is fixedly connected to a support base on the left side of the lower drive platform. The lower translation cylinder is electrically connected to the control mechanism. The stroke end of the lower translation cylinder is fixedly connected to the lower drive platform. A micro switch is fixedly mounted on the lower drive platform. The micro switch is electrically connected to the control mechanism and is used to detect the keyway at the bottom of the rotating shaft.

[0019] Furthermore, the upper fixing mechanism includes:

[0020] A lifting plate is positioned below the fixed plate. Sliding holes are provided through the four corners of the lifting plate, and these sliding holes are slidably fitted onto a sliding rod assembly. A hanging rail is fixedly mounted on the lower end face of the lifting plate, and an upper drive platform is slidably mounted on the hanging rail. The upper drive platform is electrically connected to the control mechanism. An upper chuck for clamping and fixing the impeller is fixedly mounted at the upper end of the upper drive platform. An upper translation cylinder, fixedly connected to the lifting plate, is located on the right side of the upper drive platform. The upper translation cylinder is electrically connected to the control mechanism, and its stroke end is fixedly connected to the upper drive platform.

[0021] Furthermore, the supply organization includes:

[0022] The mounting bracket is located on the right side of the lower drive platform and is fixedly connected to the upper end of the support base. A pushing mechanism is fixedly installed on the upper end of the mounting bracket, and a rotating mechanism is hinged to the pushing mechanism.

[0023] Furthermore, the push mechanism includes:

[0024] A horizontally positioned push plate has symmetrical lugs on its left and right rear sides. Each lug has a hinge seat, and two sets of hinge seats are arranged side by side along the front-rear direction. A slide is located in the center of the rear of the push plate, and a proximity switch electrically connected to the control mechanism is installed on the slide.

[0025] Furthermore, the rotating mechanism is arranged in four sets along a circular array, and is respectively inserted into the two sets of hinge seats of the left and right lugs, including:

[0026] A hinge shaft is rotatably inserted into a hinge seat. A rotating arm is provided on the hinge shaft. A connecting rod is provided in the middle of the rotating arm. A clamping wheel is hinged to the end of the rotating arm. A tension spring is provided on the connecting rod in the middle.

[0027] The two ends of the tension spring are respectively sleeved on the middle connecting rods of the front and rear rotating mechanisms;

[0028] A rotary motor is fixedly installed on the rotating arm of one of the two rear rotating mechanisms. The rotary motor is electrically connected to the control mechanism and is also connected to the clamping wheel drive.

[0029] The centrifugal compressor impeller assembly method includes:

[0030] A1. Placement of the rotating shaft: Place the rotating shaft in the lower chuck;

[0031] A2. Shaft fixing: The lower chuck clamps the shaft by controlling the control panel;

[0032] A3. Rotary shaft positioning: The lower drive platform of the control panel drives the lower chuck to rotate until the keyway at the bottom of the rotary shaft triggers the micro switch, and the lower drive platform, lower chuck, and rotary shaft stop rotating.

[0033] A4. Rotary shaft positioning: The lower drive platform is moved to the right by extending the stroke end of the translation cylinder under the control panel.

[0034] B1. Impeller placement: Place the impeller in front of the push plate and slide it backward. The impeller is close to the two sets of rotating mechanisms in front, so that the two sets of rotating mechanisms in front rotate along their respective hinge axes and move away from each other. The impeller is placed in the middle of the four sets of rotating mechanisms and is clamped by the clamping wheel.

[0035] B2. Impeller positioning: The rotary motor is controlled by the control panel to rotate, which drives the clamping wheel to rotate, so that the impeller rotates on the slide until the keyway of the impeller triggers the proximity switch, and the rotary motor, clamping wheel and impeller stop rotating.

[0036] B3. Impeller fixing: The upper fixing mechanism is lowered by extending the stroke end of the hydraulic cylinder through the control panel until the upper chuck is above the impeller. The upper chuck is then controlled by the control panel to clamp the impeller.

[0037] B4. Impeller positioning: The upper fixed mechanism is raised by retracting the stroke end of the hydraulic cylinder on the control panel, and the upper fixed mechanism is lowered by extending the stroke end of the hydraulic cylinder. The upper fixed mechanism is lowered by extending the stroke end of the hydraulic cylinder, and the upper translation cylinder is extended by extending the stroke end of the upper translation cylinder, causing the upper drive platform to translate to the left, so that the impeller is coaxially positioned directly above the rotating shaft.

[0038] C. Assembly:

[0039] By controlling the extension of the hydraulic cylinder's stroke end via the control panel, the upper fixed mechanism is lowered, and the impeller, which is clamped on the upper chuck, is fitted onto the upper part of the rotating shaft clamped on the lower chuck, thus completing the assembly.

[0040] The control mechanism determines whether personnel are performing the placement of the rotating shaft and impeller by checking the triggering status of the upper and lower triggers.

[0041] When the upper and lower triggers are in a non-triggered state, they can be operated via the control panel.

[0042] The advantages of the centrifugal compressor impeller assembly device and assembly method of the present invention are as follows:

[0043] 1. Position the rotating shaft using a micro switch and the impeller using a proximity switch to ensure accurate alignment of the keyway;

[0044] 2. The upper fixing mechanism is driven by a hydraulic mechanism to assemble the impeller to the end of the rotating shaft in one go. Attached Figure Description

[0045] To more clearly illustrate the specific embodiments of the present invention, the accompanying drawings required for the specific embodiments will be briefly introduced below. The accompanying drawings in the following description are embodiments of the present invention.

[0046] Figure 1 This is a general perspective view of the centrifugal compressor impeller assembly device according to an example of the present invention;

[0047] Figure 2 This is a three-dimensional schematic diagram of the support mechanism, hydraulic mechanism, and lower fixing mechanism of the centrifugal compressor impeller assembly device according to an example of the present invention;

[0048] Figure 3 This is a partially enlarged three-dimensional schematic diagram of the lower fixing mechanism of the centrifugal compressor impeller assembly device according to an example of the present invention;

[0049] Figure 4 This is a three-dimensional schematic diagram of the upper fixing mechanism of the centrifugal compressor impeller assembly device according to an example of the present invention;

[0050] Figure 5 This is a three-dimensional schematic diagram of the supply mechanism of the centrifugal compressor impeller assembly device according to an example of the present invention;

[0051] Figure 6 This is an exploded perspective view of the supply mechanism of the centrifugal compressor impeller assembly device according to an example of the present invention.

[0052] In the picture:

[0053] 100. Shaft; 200. Impeller.

[0054] 1. Supporting institutions

[0055] 10. Support base; 11. Slide rod assembly; 12. Control panel; 13. Lower trigger; 14. Slide rail.

[0056] 2. Hydraulic mechanism,

[0057] 20. Fixed plate; 21. Hydraulic cylinder; 22. Upper trigger.

[0058] 3. Lower fixed mechanism,

[0059] 30. Lower drive platform; 31. Lower chuck; 32. Lower translation cylinder; 33. Micro switch.

[0060] 4. Upper fixing mechanism,

[0061] 40. Lifting plate; 41. Sliding hole assembly; 42. Hanging rail; 43. Upper drive platform; 44. Upper chuck; 45. Upper translation cylinder.

[0062] 5. Supply organizations,

[0063] 50. Mounting bracket,

[0064] 51. Pushing mechanism; 510. Pushing plate; 512. Lug; 513. Hinge seat; 514. Slide table; 515. Proximity switch.

[0065] 52. Rotating mechanism; 520. Rotary motor; 521. Hinge shaft; 522. Rotary arm; 523. Connecting rod; 524. Clamping wheel; 525. Tension spring. Detailed Implementation

[0066] To more clearly and explicitly illustrate the specific objectives and implementation methods of this invention, a complete description of the technical solution of this invention will be provided below. The described embodiments are only a part of the embodiments of this invention, not all of them. Without creative effort, all other embodiments based on the embodiments described in this invention are within the protection scope of this invention.

[0067] The present invention relates to a centrifugal compressor impeller assembly device, such as... Figure 1 As shown, it includes:

[0068] Support mechanism 1, installed on a horizontal surface, such as Figure 2 As shown, it includes:

[0069] A support base 10 is installed on a horizontal ground. A slide rod assembly 11 and a slide rail 14 are fixedly installed on the upper surface of the support base 10. The slide rod assembly 11 is located at the four corners of the support base 10 and extends upward. The slide rail 14 extends in the left and right directions. An operating panel 12 is installed on the left or right side wall of the support base 10. A lower trigger 13 is installed at the front edge of the upper surface of the support base 10. The operating panel 12 and the lower trigger 13 are electrically connected to the control mechanism.

[0070] A hydraulic mechanism 2 is fixedly installed at the upper end of the support mechanism 1, such as... Figure 2 As shown, it includes:

[0071] A fixed plate 20 is fixedly connected to the upper end of the slide bar assembly 11. A hydraulic cylinder 21 electrically connected to the control mechanism is provided in the middle of the fixed plate 20. The stroke end of the hydraulic cylinder 21 passes through the fixed plate 20 and extends downward. An upper trigger 22 is provided at the front edge of the lower end face of the fixed plate 20. The upper trigger 22 is located directly above the lower trigger 13 and they are matched.

[0072] The support mechanism 1 is equipped with a lower fixing mechanism 3 and a supply mechanism 5 that slide on top.

[0073] The lower fixing mechanism 3 is used to fix the rotating shaft 100, such as Figure 2 , Figure 3 As shown, it includes:

[0074] A lower drive platform 30 is slidably mounted on a slide rail 14 extending in the left-right direction. The lower drive platform 30 is electrically connected to the control mechanism. A lower chuck 31 for clamping and fixing the rotating shaft 100 is rotatably mounted on the upper end of the lower drive platform 30. A lower translation cylinder 32 fixedly connected to the support base 10 is mounted on the left side of the lower drive platform 30. The lower translation cylinder 32 is electrically connected to the control mechanism. The stroke end of the lower translation cylinder 32 is fixedly connected to the lower drive platform 30. A micro switch 33 is fixedly mounted on the lower drive platform 30. The micro switch 33 is electrically connected to the control mechanism and is used to detect the keyway at the lower part of the rotating shaft 100.

[0075] The supply mechanism 5 is used to supply the fixed impeller 200 to the upward fixing mechanism 4, such as Figure 5 , Figure 6 As shown, it includes:

[0076] The mounting bracket 50 is located on the right side of the lower drive platform 30 and is fixedly connected to the upper end of the support base 10. A pushing mechanism 51 is fixedly installed on the upper end of the mounting bracket 50, and a rotating mechanism 52 is hinged to the pushing mechanism 51.

[0077] The push mechanism 51 includes:

[0078] A horizontally positioned push plate 510 has lugs 512 symmetrically arranged on the left and right sides of its rear end. A hinge seat 513 is provided on the lugs 512. Two sets of hinge seats 513 are arranged side by side along the front-back direction. A slide table 514 is provided in the center of the rear end of the push plate 510. A proximity switch 515 electrically connected to the control mechanism is provided on the slide table 514.

[0079] The rotating mechanism 52 is arranged in four sets along a circular array, and is respectively inserted into the two sets of hinge seats 513 of the left and right lugs 512, including:

[0080] A hinge shaft 521 is rotatably inserted into a hinge seat 513. A rotating arm 522 is provided on the hinge shaft 521. A middle connecting rod 523 is provided in the middle of the rotating arm 522. A clamping wheel 524 is hinged to the end of the rotating arm 522. A tension spring 525 is provided on the middle connecting rod 523.

[0081] The two ends of the tension spring 525 are respectively sleeved on the middle connecting rod 523 of the front and rear rotating mechanisms 52;

[0082] A rotary motor 520 is fixedly installed on one of the two sets of rotating mechanisms 52 at the rear. The rotary motor 520 is electrically connected to the control mechanism and is drivenly connected to the clamping wheel 524.

[0083] Below the hydraulic mechanism 2, there is an upper fixing mechanism 4 that is slidably connected to the support mechanism 1 and fixedly connected to the hydraulic mechanism 2. The upper fixing mechanism 4 is used to fix the impeller 200 and includes:

[0084] A lifting plate 40 is located below the fixed plate 20. Sliding hole groups 41 are provided through the four corners of the lifting plate 40. The sliding hole groups 41 are slidably sleeved on the sliding rod group 11. A hanging rail 42 is fixedly installed on the lower end surface of the lifting plate 40. An upper drive platform 43 is slidably installed on the hanging rail 42. The upper drive platform 43 is electrically connected to the control mechanism. An upper chuck 44 for clamping and fixing the impeller 200 is fixedly installed at the upper end of the upper drive platform 43. An upper translation cylinder 45 is fixedly connected to the lifting plate 40 on the right side of the upper drive platform 43. The upper translation cylinder 45 is electrically connected to the control mechanism, and its stroke end is fixedly connected to the upper drive platform 43.

[0085] Also includes:

[0086] Control mechanisms used for automated control.

[0087] Based on the specific structure of the centrifugal compressor impeller assembly device in the above embodiments, the centrifugal compressor impeller assembly method will be further explained below:

[0088] A1. Placement of rotating shaft 100: Place rotating shaft 100 at lower chuck 31;

[0089] A2. Fixing the rotating shaft 100: The lower chuck 31 is clamped to the rotating shaft 100 by controlling the control panel 12;

[0090] A3. Positioning of the rotating shaft 100: The lower drive platform 30 of the control panel 12 drives the lower chuck 31 to rotate until the keyway at the bottom of the rotating shaft 100 triggers the micro switch 33, and the lower drive platform 30, lower chuck 31, and rotating shaft 100 stop rotating.

[0091] A4. Rotary shaft 100 is in place: The lower drive platform 30 is moved to the right by extending the stroke end of the lower translation cylinder 32 through the control panel 12.

[0092] B1. Impeller 200 placement: Place the impeller 200 in front of the push plate 510 and slide it backward. The impeller 200 is close to the two sets of rotating mechanisms 52 in front, so that the two sets of rotating mechanisms 52 in front rotate along their respective hinge axes 521 and move away from each other. The impeller 200 is placed in the middle of the four sets of rotating mechanisms 52 and is clamped by the clamping wheel 524.

[0093] B2. Positioning of impeller 200: The rotary motor 520 is rotated by the control panel 12, which drives the clamping wheel 524 to rotate, so that the impeller 200 rotates on the slide table 514 until the keyway of the impeller 200 triggers the proximity switch 515, and the rotary motor 520, clamping wheel 524 and impeller 200 stop rotating.

[0094] B3. Impeller 200 fixing: The upper fixing mechanism 4 is lowered by extending the stroke end of the hydraulic cylinder 21 through the control panel 12 until the upper chuck 44 is above the impeller 200. The upper chuck 44 is clamped by the control panel 12.

[0095] B4. Impeller 200 in position: The upper fixed mechanism 4 is raised by retracting the stroke end of the hydraulic cylinder 21 via the control panel 12, and the upper fixed mechanism 4 is lowered by extending the stroke end of the hydraulic cylinder 21. The upper fixed mechanism 4 is lowered by extending the stroke end of the hydraulic cylinder 21, and the upper translation cylinder 45 is extended by extending the stroke end, causing the upper drive platform 43 to translate to the left, so that the impeller 200 is coaxially positioned directly above the rotating shaft 100.

[0096] C. Assembly:

[0097] By controlling the extension of the stroke end of the hydraulic cylinder 21 through the control panel 12, the upper fixing mechanism 4 is lowered, and the impeller 200 is clamped on the upper chuck 44 and fitted onto the upper part of the rotating shaft 100 clamped on the lower chuck 31, thus completing the assembly.

[0098] The control mechanism determines whether personnel are placing the rotating shaft 100 and impeller 200 by the triggering status of the upper trigger 22 and the lower trigger 13.

[0099] When the upper trigger 22 and the lower trigger 13 are in the non-triggered state, operation is performed via the control panel 12.

[0100] Based on the above, and guided by the embodiments of the centrifugal compressor impeller assembly device and its assembly method of the present invention, those skilled in the art can make various changes and modifications without departing from the technical concept of this invention. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A centrifugal compressor impeller assembly device, characterized in that: include: A support mechanism (1) is set on a horizontal ground. A hydraulic mechanism (2) is fixedly set on the upper end of the support mechanism (1). A lower fixing mechanism (3) and a supply mechanism (5) are slidably set on the support mechanism (1). An upper fixing mechanism (4) is set below the hydraulic mechanism (2) and is slidably connected to the support mechanism (1) and fixedly connected to the hydraulic mechanism (2). The lower fixing mechanism (3) is used to fix the rotating shaft (100); The upper fixing mechanism (4) is used to fix the impeller (200); The support mechanism (1) includes a support base (10) set on a horizontal ground, and the lower fixing mechanism (3) includes a lower drive platform (30). The supply mechanism (5) is used to supply the fixed impeller (200) to the upward fixing mechanism (4), including: a mounting frame (50) disposed on the right side of the lower drive platform (30) and fixedly connected to the upper end face of the support base (10), a pushing mechanism (51) is fixedly disposed on the upper end of the mounting frame (50), and a rotating mechanism (52) is hinged on the pushing mechanism (51). The pushing mechanism (51) includes: a horizontally arranged pushing plate (510), with lugs (512) symmetrically arranged on the left and right sides of the rear of the pushing plate (510), and a hinge seat (513) arranged on the lugs (512). Two sets of hinge seats (513) are arranged side by side in the front-back direction. A slide table (514) is arranged in the center of the rear of the pushing plate (510), and a proximity switch (515) electrically connected to the control mechanism is arranged on the slide table (514). The rotating mechanism (52) is arranged in four sets along a circular array, and is respectively inserted into the two sets of hinge seats (513) of the left and right lugs (512), including: A hinge shaft (521) is rotatably inserted into a hinge seat (513). A rotating arm (522) is provided on the hinge shaft (521). A middle connecting rod (523) is provided in the middle of the rotating arm (522). A clamping wheel (524) is hinged to the end of the rotating arm (522). A tension spring (525) is provided on the middle connecting rod (523). The two ends of the tension spring (525) are respectively sleeved on the middle connecting rod (523) of the front and rear rotating mechanisms (52). A rotary motor (520) is fixedly provided on the rotating arm (522) of one of the two rear rotating mechanisms (52). The rotary motor (520) is electrically connected to the control mechanism and is drively connected to the clamping wheel (524). Also includes: Control mechanisms used for automated control.

2. The centrifugal compressor impeller assembly device according to claim 1, characterized in that: The support mechanism (1) also includes: A slide bar assembly (11) and a slide rail (14) are fixedly installed on the upper surface of the support base (10). The slide bar assembly (11) is located at the four corners of the support base (10) and extends upward. The slide rail (14) extends in the left and right directions. An operating panel (12) is installed on the left or right side wall of the support base (10). A lower trigger (13) is installed at the front edge of the upper surface of the support base (10). The operating panel (12) and the lower trigger (13) are electrically connected to the control mechanism.

3. The centrifugal compressor impeller assembly device according to claim 2, characterized in that: The hydraulic mechanism (2) includes: A fixed plate (20) is fixedly connected to the upper end of the slide bar assembly (11). A hydraulic cylinder (21) electrically connected to the control mechanism is provided in the middle of the fixed plate (20). The stroke end of the hydraulic cylinder (21) passes through the fixed plate (20) and extends downward.

4. The centrifugal compressor impeller assembly device according to claim 3, characterized in that: An upper trigger (22) is provided at the front edge of the lower end face of the fixed plate (20). The upper trigger (22) is located directly above the lower trigger (13) and they are matched.

5. The centrifugal compressor impeller assembly device according to claim 4, characterized in that: The lower fixing mechanism (3) further includes: The lower drive platform (30) is slidably mounted on a slide rail (14) extending in the left-right direction. The lower drive platform (30) is electrically connected to the control mechanism. A lower chuck (31) for clamping and fixing the rotating shaft (100) is rotatably mounted on the upper end of the lower drive platform (30). A lower translation cylinder (32) fixedly connected to the support base (10) is mounted on the left side of the lower drive platform (30). The lower translation cylinder (32) is electrically connected to the control mechanism. The stroke end of the lower translation cylinder (32) is fixedly connected to the lower drive platform (30). A micro switch (33) is fixedly mounted on the lower drive platform (30). The micro switch (33) is electrically connected to the control mechanism and is used to detect the keyway at the bottom of the rotating shaft (100).

6. The centrifugal compressor impeller assembly device according to claim 5, characterized in that: The upper fixing mechanism (4) includes: A lifting plate (40) is set below the fixed plate (20). A sliding hole group (41) is provided through the four corners of the lifting plate (40). The sliding hole group (41) is slidably sleeved on the sliding rod group (11). A hanging rail (42) is fixedly set on the lower end surface of the lifting plate (40). An upper drive platform (43) is slidably set on the hanging rail (42). The upper drive platform (43) is electrically connected to the control mechanism. An upper chuck (44) for clamping and fixing the impeller (200) is fixedly set on the upper end of the upper drive platform (43). An upper translation cylinder (45) is fixedly connected to the lifting plate (40) on the right side of the upper drive platform (43). The upper translation cylinder (45) is electrically connected to the control mechanism. The stroke end of the upper translation cylinder (45) is fixedly connected to the upper drive platform (43).

7. A centrifugal compressor impeller assembly method, wherein the centrifugal compressor impeller assembly device according to claim 6 is characterized in that: A1. Placement of the rotating shaft (100): Place the rotating shaft (100) at the lower chuck (31); A2. Shaft (100) fixing: The lower chuck (31) is clamped by controlling the control panel (12); A3. Rotary shaft (100) positioning: The lower drive platform (30) of the control panel (12) drives the lower chuck (31) to rotate until the keyway at the bottom of the rotary shaft (100) triggers the micro switch (33), and the lower drive platform (30), lower chuck (31) and rotary shaft (100) stop rotating; A4. Rotary shaft (100) in place: The lower drive platform (30) is moved to the right by extending the stroke end of the lower translation cylinder (32) through the control panel (12); B1. Impeller (200) placement: Place the impeller (200) in front of the push plate (510) and slide it backward. The impeller (200) is close to the two sets of rotating mechanisms (52) in front, so that the two sets of rotating mechanisms (52) in front rotate along their respective hinge axes (521) and move away from each other. The impeller (200) is placed in the middle of the four sets of rotating mechanisms (52) and is clamped by the clamping wheel (524). B2. Impeller (200) positioning: The rotary motor (520) is controlled to rotate by the control panel (12), which drives the clamping wheel (524) to rotate, so that the impeller (200) rotates on the slide table (514) until the keyway of the impeller (200) triggers the proximity switch (515), and the rotary motor (520), clamping wheel (524) and impeller (200) stop rotating; B3. Impeller (200) fixing: The upper fixing mechanism (4) is lowered by extending the stroke end of the hydraulic cylinder (21) through the control panel (12) until the upper chuck (44) is above the impeller (200). The upper chuck (44) is clamped by the control panel (12). B4. Impeller (200) in position: The stroke end of the hydraulic cylinder (21) is retracted by the control panel (12), causing the upper fixed mechanism (4) to rise. The stroke end of the hydraulic cylinder (21) is extended, causing the upper fixed mechanism (4) to fall. The stroke end of the hydraulic cylinder (21) is extended, causing the upper fixed mechanism (4) to fall. The stroke end of the upper translation cylinder (45) is extended, causing the upper drive platform (43) to move to the left. The impeller (200) is coaxially positioned directly above the rotating shaft (100). C. Assembly: By controlling the extension of the stroke end of the hydraulic cylinder (21) through the control panel (12), the upper fixing mechanism (4) is lowered, and the impeller (200) clamped on the upper chuck (44) is sleeved on the upper part of the rotating shaft (100) clamped on the lower chuck (31) to complete the assembly; The control mechanism determines whether personnel are placing the rotating shaft (100) and impeller (200) by the triggering states of the upper trigger (22) and the lower trigger (13); When the upper trigger (22) and lower trigger (13) are in a non-triggered state, they can be operated through the control panel (12).

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