Vertical high-speed direct-drive closed impeller dismounting device
By designing a combination structure of a trumpet-shaped elastic clamp and a push rod, the problem of disassembling the vertical direct-drive high-speed closed impeller from the motor output shaft was solved, achieving uniform force distribution on the impeller and labor-saving disassembly and operation.
Patent Information
- Application Number
- CN202520074298.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-13
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2035-01-13
AI Technical Summary
In existing technologies, it is difficult to disassemble the vertical direct-drive high-speed closed impeller and the motor output shaft, especially due to the difficulty of disassembly caused by the transition fit and the inability to distribute force evenly.
A vertical high-speed direct-drive closed impeller disassembly device is designed, which adopts a combination structure of a horn-shaped elastic clamp and a push rod. By cooperating the trapezoidal projection of the elastic clamp and the inverted trapezoidal projection of the push rod, the impeller can be disassembled with uniform force. Combined with the telescopic structure and blind hole design to fix the rotating sleeve, the stability and convenience of the disassembly process are ensured.
It enables convenient disassembly of the impeller, ensures uniform force on the impeller during disassembly, reduces disassembly difficulty, and improves the labor-saving operation.
Smart Images
Figure CN223749556U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of disassembly tool manufacturing technology, specifically a vertical high-speed direct-drive closed impeller disassembly device. Background Technology
[0002] like Figure 1 As shown, the vertical direct-drive high-speed closed impeller 11 is directly connected to the motor output shaft 12 via a key 13. To ensure that the key 13 is not easily damaged, the inner hole of the impeller 11 must fit tightly with the motor output shaft 12, usually an intermediate fit. When the impeller 11 is assembled onto the motor output shaft 12, the inner hole of the impeller 11 can be heated, but during disassembly... Figure 2 As shown, it cannot be pulled out with a puller, nor can a threaded hole be designed on the end face of the impeller 11 (due to functional reasons, and also because the threaded hole cannot be large due to structural reasons, the ejection force is limited, and the ejection force cannot be uniform), thus making disassembly difficult. Utility Model Content
[0003] The purpose of this application is to address the shortcomings of existing technologies by designing a vertical high-speed direct-drive closed impeller disassembly device through a trumpet-shaped elastic clamp (that is, the projection of the lower end of the elastic clamp on a plane parallel to the axis of the elastic clamp is trapezoidal) in conjunction with a push rod. This solves the problems of how to facilitate the disassembly of the impeller and ensure uniform force on the impeller during the process of pulling the impeller off the motor output shaft.
[0004] To achieve the above objectives, this application provides the following technical solution:
[0005] A vertical high-speed direct-drive closed impeller disassembly device includes an elastic chuck, a push rod, and a handle. The elastic chuck is a tubular shape with open ends. The projection of the lower outer wall of the elastic chuck onto a plane A parallel to the axis of the elastic chuck is a regular trapezoid. The projection of the lower inner wall of the elastic chuck onto plane A is an inverted isosceles trapezoid A. The projection of the lower end of the push rod onto plane A is an inverted isosceles trapezoid B. The length of the top side of the inverted isosceles trapezoid B is less than the length of the base side of the inverted isosceles trapezoid A, and the length of the base side of the inverted isosceles trapezoid B is greater than the length of the top side of the inverted isosceles trapezoid A. The push rod is coaxially inserted into the elastic chuck. The handle is radially located at the top end of the push rod. A retainer is coaxially provided at the top end of the elastic chuck, and a threaded hole is coaxially provided on the retainer. A first external thread that mates with the threaded hole is provided between the two ends of the push rod.
[0006] Preferably, the fixing device comprises a rotating sleeve having a top wall and a circumferential wall, the top end of the circumferential wall being fixedly connected with the top wall, the top wall being coaxially provided with the threaded hole, the rotating sleeve being fixedly connected with the upper end of the elastic chuck through an extension structure, and a radial blind hole being provided on the circumferential surface of the rotating sleeve.
[0007] Preferably, the extension structure comprises an elastic sleeve, a top block, the elastic chuck being a tubular structure with open ends, the upper end of the elastic chuck being provided with a second external thread, the circumferential wall being provided with an internal thread matched with the second external thread, the top end of the elastic chuck being coaxially inserted into the elastic sleeve, the top block being mounted between the top end of the elastic chuck and the top wall in the elastic sleeve, the bottom of the side wall of the elastic sleeve being provided with a limiting device matched with the top end of the elastic chuck, and the outer edge of the top end of the elastic chuck being between the limiting device and the top block.
[0008] Preferably, the limiting device comprises an opening at the lower end of the elastic sleeve, the projection of the outer circumferential surface of the top end of the elastic chuck in the plane A being an inverted trapezoid C, the projection of the opening at the lower end of the elastic sleeve in the plane A being an inverted trapezoid D, and the length of the bottom side of the inverted trapezoid C being between the length of the bottom side of the inverted trapezoid D and the length of the top side of the inverted trapezoid D.
[0009] Preferably, the top rod is radially connected between the two ends of the handle.
[0010] Preferably, the top end of the top rod is radially provided with a through hole, and the handle is inserted into the through hole.
[0011] Preferably, the top block comprises a spacer and a compression sleeve, the compression sleeve being coaxially arranged in the elastic sleeve, the top end of the compression sleeve being coaxially provided with the spacer in the compression sleeve, and the two ends of the top rod penetrating through the compression sleeve and the spacer.
[0012] Preferably, the height of the isosceles inverted trapezoid B is greater than the height of the isosceles inverted trapezoid A.
[0013] Compared with the prior art, the application has the following beneficial effects:
[0014] 1. The application designs a vertical high-speed direct-drive closed impeller dismounting device by setting a horn-shaped (i.e., the projection of the lower end of the elastic chuck in the plane parallel to the axis of the elastic chuck is a trapezoid) elastic chuck matched with a top rod, thereby solving the problems of how to conveniently dismount the impeller and how to ensure that the impeller is uniformly stressed during the process of pulling the impeller out of the motor output shaft.
[0015] 2, the application sets up blind hole, when fixing rotating sleeve, only need to insert a iron stick into blind hole, then hold with hand, so that rotating handle can guarantee rotating sleeve and elastic chuck not rotating, the design of telescopic structure can adjust the length of elastic chuck extending out of rotating sleeve. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 For the scene of the application in use;
[0017] Figure 2 For the structural diagram of the application;
[0018] Figure 3 For the structural diagram of the elastic chuck in the application.
[0019] In the figure: 1, elastic chuck; 2, top rod; 3, handle; 4, plane A; 5, rotating sleeve; 6, blind hole; 7, elastic chuck; 8, top block; 9, spacer; 10, compression sleeve; 11, impeller; 12, motor shaft; 13, key. DETAILED DESCRIPTION
[0020] As Figures 1-3 shown, a vertical high-speed direct-drive closed impeller dismounting device, comprising an elastic chuck 1, a top rod 2 and a handle 3, the elastic chuck 1 is a tubular with two open ends, the projection of the outer wall of the lower end of the elastic chuck on the plane A4 parallel to the axis of the elastic chuck 1 is a right trapezoid, the projection of the inner wall of the lower end of the elastic chuck 1 on the plane A4 is an isosceles inverted trapezoid A, the projection of the lower end of the top rod 2 on the plane A4 is an isosceles inverted trapezoid B, the length of the top side of the isosceles inverted trapezoid B is less than the length of the bottom side of the isosceles inverted trapezoid A, the length of the bottom side of the isosceles inverted trapezoid B is greater than the length of the top side of the isosceles inverted trapezoid A, the top rod 2 is coaxially inserted into the elastic chuck 1, the handle 3 is radially arranged at the top end of the top rod 2, the top end of the elastic chuck 1 is coaxially provided with a fixer, the fixer is coaxially provided with a threaded hole, and the first external thread between the two ends of the top rod 2 is matched with the threaded hole.
[0021] In this embodiment, when in use, the lower end of the elastic chuck 1 is inserted into the inner hole of the impeller 11, then the handle 3 is rotated, while the elastic chuck 1 and the holder are held by hand (of course, other tools can also be used to hold the elastic chuck 1 and the holder, for example, pliers), so that the elastic chuck 1 and the holder do not rotate. Since the top rod 2 is threadedly connected to the threaded hole on the holder, the top rod 2 also rotates during the rotation of the handle 3, so that the top rod 2 continuously moves towards the inside of the holder, and then the lower end of the top rod 2 continuously inserts into the elastic chuck 1. Since the projection of the lower end of the top rod 2 on the plane A4 is an isosceles trapezoid B, and the projection of the inner wall of the lower end of the elastic chuck 1 on the plane A4 is an isosceles trapezoid A, during the insertion of the top rod 2 into the lower end of the elastic chuck 1, the lower end of the elastic chuck 1 continuously expands, so that the side wall of the lower end of the elastic chuck 1 abuts against the inner hole of the impeller 11, forming a large friction force. Then continue to rotate the handle 3 in the same direction, so that the lower end of the top rod 2 protrudes out of the lower end of the elastic chuck 1 (that is, axially penetrates the elastic chuck 1), so that the elastic chuck 1 and the impeller 11 move upwards together (move away from the motor output shaft 12), and finally the impeller 11 is disassembled. Since the handle 3 has a lever effect, it is relatively labor-saving, and secondly, during the process of inserting the lower end of the top rod 2 into the elastic chuck 1, the elastic chuck 1 expands around the impeller 11, so that the force received by the inner hole of the impeller 11 during the upward movement of the elastic chuck 1 is uniform.
[0022] As a preferred mode, the holder comprises a rotating sleeve 5, the rotating sleeve 5 has a top wall and a circumferential wall, the top end of the circumferential wall is fixedly connected with the top wall, the threaded hole is coaxially arranged on the top wall, the rotating sleeve 5 is fixedly connected with the upper end of the elastic chuck 1 through an extension structure, and a blind hole 6 is radially arranged on the circumferential surface of the rotating sleeve 5. After such design, when fixing the rotating sleeve 5, only a iron rod is inserted into the blind hole 6, and then the rotating sleeve 5 is held by hand, so that the rotating sleeve 5 and the elastic chuck 1 do not rotate during the rotation of the handle 3. The design of the extension structure makes it possible to adjust the length of the elastic chuck 1 protruding out of the rotating sleeve 5.
[0023] As a preferred mode, the extension structure comprises an elastic sleeve 7 and a top block 8, the elastic chuck 1 is a tubular structure with two open ends, the upper end of the elastic chuck 1 is provided with a second external thread, the inner wall of the circumferential wall is provided with an internal thread matched with the second external thread, the top end of the elastic chuck 1 is coaxially inserted into the elastic sleeve 7, the top block 8 is arranged between the top end of the elastic chuck 1 and the top wall in the elastic sleeve 7, the bottom of the side wall of the elastic sleeve 7 is provided with a limiting device matched with the top end of the elastic chuck 1, and the outer edge of the top end of the elastic chuck 1 is between the limiting device and the top block 8.
[0024] After the setting, the elastic sleeve 7 is first supported before the impeller 11 is disassembled, and then the rotating sleeve 5 is rotated. During the rotation of the rotating sleeve 5, the elastic sleeve 7 moves axially towards the rotating sleeve 5. In this process, the top wall of the rotating sleeve 5 abuts against the top end of the elastic chuck 1, so that the upper end of the elastic chuck 1 moves downward relative to the rotating sleeve 5. Then the rotating sleeve 5 is continuously rotated relative to the elastic sleeve 7 until the limiting device and the top block 8 completely clamp the elastic chuck 1. In this way, it can be ensured that the elastic chuck 1 will not rotate when the top rod 2 is rotated and the rotating sleeve 5 is fixed. Such a design is convenient for disassembling and storing the rotating sleeve 5 and the elastic chuck 1 when not in use, and for fixing the rotating sleeve 5 and the elastic chuck 1 together when in use. Moreover, since the rotating sleeve 5 is provided, it is convenient to limit the elastic chuck 1 so that it does not rotate with the handle 3.
[0025] As a preferred mode, the limiting device includes an opening at the lower end of the elastic sleeve 7, the projection of the outer circumferential surface of the top end of the elastic chuck 1 in the plane A is an inverted trapezoid C, the projection of the opening at the lower end of the elastic sleeve 7 in the plane A4 is an inverted trapezoid D, and the length of the bottom edge of the inverted trapezoid C is between the length of the bottom edge of the inverted trapezoid D and the length of the top edge of the inverted trapezoid D. Such a setting makes the elastic sleeve 7 more stable when clamping the elastic chuck 1.
[0026] As a preferred mode, the handle 3 is radially connected between the two ends of the top rod 2. After the rotating sleeve 5 is fixed, it is convenient to hold the handle 3 with both hands, one hand holding one end of the handle 3, so that the force applied to the rotation of the handle 3 is greater.
[0027] As a preferred mode, the top end of the top rod 2 is provided with a through hole in the radial direction, and the handle 3 is inserted into the through hole. By providing a through hole, the radial length of the end of the handle 3 on the top rod 2 can be adjusted according to the use scenario.
[0028] As a preferred mode, the top block 8 includes a spacer 9 and a compression sleeve 10, the compression sleeve 10 is coaxially arranged in the elastic sleeve 7, the top end of the compression sleeve 10 is coaxially provided with the spacer 9 in the compression sleeve 10, and the two ends of the top rod 2 penetrate the compression sleeve 10 and the spacer 9. Such a design makes the force between the top end of the elastic chuck 1 and the rotating sleeve 5 uniform.
[0029] As a preferred mode, the height of the isosceles inverted trapezoid B is greater than the height of the isosceles inverted trapezoid A. Such a design can ensure that the top rod 2 still exerts a radial force on the inside of the elastic chuck 1 after it extends to the lower end of the elastic chuck 1.
[0030] Preferably, asFigure 3 As shown, the elastic chuck 1 can be made of a steel material with toughness, and then some notches are arranged at both ends of the elastic chuck 1, so that the end portions of the elastic chuck 1 have radial expansion and contraction capability.
Claims
1. A vertical high-speed direct-drive closed impeller dismounting device, characterized in that, The utility model provides a kind of elastic chuck (1), ejector rod (2), handle (3), the elastic chuck (1) is the tubular structure of two ends opening, the projection of the outer wall of the lower end of the elastic chuck on plane A (4) parallel to the axis of the elastic chuck (1) is right trapezoid, the projection of the inner wall of the lower end of the elastic chuck (1) on plane A (4) is isosceles inverted trapezoid A, the projection of the lower end of the ejector rod (2) on the plane A (4) is isosceles inverted trapezoid B, the length of the top side of the isosceles inverted trapezoid B is less than the length of the bottom side of the isosceles inverted trapezoid A, the length of the bottom side of the isosceles inverted trapezoid B is greater than the length of the top side of the isosceles inverted trapezoid A, the ejector rod (2) is coaxially inserted into the elastic chuck (1), the handle (3) is radially arranged at the top end of the ejector rod (2), the top end of the elastic chuck (1) is coaxially provided with a fixator, the fixator is coaxially provided with a threaded hole, and the first external thread matched with the threaded hole is arranged between the two ends of the ejector rod (2).
2. The vertical high-speed direct-drive closed impeller dismounting device according to claim 1, characterized in that, The fixator includes a rotating sleeve (5), the rotating sleeve (5) has a top wall and a circumferential wall, the top end of the circumferential wall is fixedly connected with the top wall, the threaded hole is coaxially arranged on the top wall, the rotating sleeve (5) is fixedly connected with the upper end of the elastic chuck (1) through a telescopic structure, and a blind hole (6) is radially arranged on the circumferential surface of the rotating sleeve (5).
3. The vertical high-speed direct-drive closed impeller dismounting device according to claim 2, characterized in that, The telescopic structure includes an elastic sleeve (7) and a top block (8), the elastic chuck (1) is the tubular structure of two ends opening, the upper end of the elastic chuck (1) is provided with a second external thread, the inner thread matched with the second external thread is arranged in the circumferential wall, the top end of the elastic chuck (1) is coaxially inserted into the elastic sleeve (7), the top block (8) is mounted between the top end of the elastic chuck (1) and the top wall in the elastic sleeve (7), the bottom of the side wall of the elastic sleeve (7) is provided with a limiting device matched with the top end of the elastic chuck (1), and the outer edge of the top end of the elastic chuck (1) is between the limiting device and the top block (8).
4. The vertical high-speed direct-drive closed impeller dismounting device according to claim 3, characterized in that, The limiting device includes the opening of the lower end of the elastic sleeve (7), the outer circumferential surface of the top end of the elastic chuck (1) is projected as an inverted trapezoid C in the plane A, the opening of the lower end of the elastic sleeve (7) is projected as an inverted trapezoid D in the plane A (4), and the length of the bottom side of the inverted trapezoid C is between the length of the bottom side of the inverted trapezoid D and the length of the top side of the inverted trapezoid D.
5. The vertical high-speed direct-drive closed impeller dismounting device according to claim 1, characterized in that, The two ends of the handle (3) are radially connected with the ejector rod (2).
6. The vertical high-speed direct-drive closed impeller dismounting device according to claim 5, characterized in that, The top end of the ejector rod (2) is radially provided with a through hole, and the handle (3) is inserted into the through hole.
7. The vertical high-speed direct-drive closed impeller dismounting device according to claim 3, characterized in that, The top block (8) includes a spacer sleeve (9) and a compression sleeve (10), the compression sleeve (10) is coaxially arranged in the elastic sleeve (7), the top end of the compression sleeve (10) is coaxially provided with the spacer sleeve (9) in the compression sleeve (10), and the two ends of the ejector rod (2) penetrate through the compression sleeve (10) and the spacer sleeve (9).
8. The vertical high-speed direct-drive closed impeller dismounting device according to claim 1, characterized in that, The height of the isosceles inverted trapezoid B is greater than the height of the isosceles inverted trapezoid A.