Vertical high-speed direct-drive closed impeller dismounting device
By designing the combination of the horn-type elastic chuck and the top rod, combined with the telescopic structure and the use of the rotating sleeve, the problem of difficulty in disassembly and uneven force of the high-speed direct-drive closed impeller is solved, and the impeller is easily disassembled and uniform force-bearing is achieved.
Patent Information
- Application Number
- CN202510049061.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-13
- Publication Date
- 2025-03-14
AI Technical Summary
The prior art is difficult to disassemble the high-speed direct drive closed impeller, and the impeller is subjected to uneven force during the disassembly.
A vertical high-speed direct drive closed impeller removal device is designed, which adopts a combination of a horn-type elastic chuck and a top rod. Through the design of the trapezoidal outer wall of the elastic chuck and the isosceles inverted trapezoidal inner wall, combined with the use of the telescopic structure and the rotating sleeve, the impeller is uniformly subjected to force and convenient disassembly.
The impeller is easily disassembled, ensuring that the impeller is subjected to uniform force during the disassembly process, and the force required for disassembly is reduced through leverage.
Smart Images
Figure CN119610007A_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the technical field of disassembly tool manufacturing, and specifically relates to a vertical high-speed direct-drive closed impeller disassembly device. Background Art
[0002] like Figure 1 As shown, the vertical direct-drive high-speed closed impeller 11 is directly connected to the motor output shaft 12 through a key 13. To ensure that the key 13 is not easily damaged, the inner hole of the impeller 11 and the motor output shaft 12 must be closely matched, usually in a transition fit. When the impeller 11 is assembled to the motor output shaft 12, the inner hole of the impeller 11 can be heated, but when disassembling, Figure 2 As shown, it is impossible to pull it out with a puller, and it is also impossible to design a threaded hole to eject the impeller 11 at the end face (for functional reasons, and also because of structural reasons, the threaded hole cannot be large, the ejection force is limited, and the ejection force cannot be uniform), which makes disassembly difficult. Summary of the invention
[0003] The purpose of this application is to address the shortcomings of the prior art. By providing a trumpet-shaped (that is, the projection of the lower end of the elastic clamp on a plane parallel to the axis of the elastic clamp is a trapezoid) elastic clamp in conjunction with a push rod, a vertical high-speed direct-drive closed impeller disassembly device is designed, thereby solving the problem of how to facilitate the disassembly of the impeller and ensure that the impeller is subjected to uniform force during the process of pulling the impeller from the motor output shaft.
[0004] To achieve the above objectives, this application provides the following technical solutions:
[0005] A vertical high-speed direct-drive closed impeller disassembly device comprises an elastic chuck, a push rod and a handle, the elastic chuck is a tubular shape with openings at both ends, the outer wall of the lower end of the elastic chuck is projected as a regular trapezoid on a plane A parallel to the axis of the elastic chuck, the inner wall of the lower end of the elastic chuck is projected as an isosceles inverted trapezoid A on plane A, the lower end of the push rod is projected as an isosceles inverted trapezoid B on plane A, 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 push rod is coaxially inserted into the elastic chuck, the handle is radially arranged at the top end of the push rod, the top end of the elastic chuck is coaxially provided with a fixer, the fixer is coaxially provided with a threaded hole, and a first external thread matching the threaded hole is provided between the two ends of the push rod.
[0006] Preferably, the fixer includes a rotating sleeve, the rotating sleeve has a top wall and a circumferential wall, the top end of the circumferential wall is fixedly connected to the top wall, the threaded hole is coaxially arranged on the top wall, the rotating sleeve is fixedly connected to the upper end of the elastic chuck via a telescopic structure, and a blind hole is radially arranged on the circumferential surface of the rotating sleeve.
[0007] Preferably, the telescopic structure includes an elastic sleeve and a top block, the elastic sleeve is a tubular structure with openings at both ends, the upper end of the elastic sleeve is provided with a second external thread, the circumferential wall is provided with an internal thread matching the second external thread, the top end of the elastic sleeve is coaxially inserted into the elastic sleeve, the top block is installed in the elastic sleeve between the top end of the elastic sleeve and the top wall, the bottom of the side wall of the elastic sleeve is provided with a limiting device matching the top end of the elastic sleeve, and the outer edge of the top end of the elastic sleeve is between the limiting device and the top block.
[0008] Preferably, the limiting device includes an opening at the lower end of the elastic sleeve, the projection of the outer circumferential surface of the top end of the elastic clamp in the plane A is an inverted trapezoid C, the projection of the opening at the lower end of the elastic sleeve in the plane A is an inverted trapezoid D, and the length of the base of the inverted trapezoid C is between the length of the base of the inverted trapezoid D and the length of the top of the inverted trapezoid D.
[0009] Preferably, both ends of the handle are radially connected to the push rod.
[0010] Preferably, a through hole is radially provided at the top end of the push rod, and the handle is inserted through the through hole.
[0011] Preferably, the top block includes a spacer sleeve and a compression sleeve, the compression sleeve is coaxially arranged in the elastic sleeve, the top end of the compression sleeve is coaxially arranged with the spacer sleeve in the compression sleeve, and the compression sleeve and the spacer sleeve are passed through between the two ends of the push rod.
[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 present invention has the following beneficial effects:
[0014] 1. The present application designs a vertical high-speed direct-drive closed impeller disassembly device by providing a trumpet-shaped (that is, the projection of the lower end of the elastic clamp on a plane parallel to the axis of the elastic clamp is a trapezoid) elastic clamp in conjunction with a push rod, thereby solving the problem of how to facilitate the disassembly of the impeller and ensure that the impeller is subjected to uniform force during the process of pulling the impeller out from the motor output shaft.
[0015] 2. After the blind hole is set in the present application, when fixing the rotating sleeve, it is only necessary to insert an iron rod into the blind hole and then hold it with the hand. In this way, the rotating sleeve and the elastic chuck can be ensured not to rotate during the turning process of the handle. The design of the telescopic structure makes it possible to adjust the length of the elastic chuck extending out of the rotating sleeve. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a scene diagram of this application when it is in use;
[0017] Figure 2 This is a schematic diagram of the structure of this application;
[0018] Figure 3 It is a schematic diagram of the structure of the elastic collet in this application.
[0019] In the figure: 1. elastic chuck; 2. push rod; 3. handle; 4. plane A; 5. rotating sleeve; 6. blind hole; 7. elastic sleeve; 8. ejector block; 9. spacer; 10. clamping sleeve; 11. impeller; 12. motor shaft; 13. key. DETAILED DESCRIPTION
[0020] like Figure 1-3 As shown, a vertical high-speed direct-drive closed impeller disassembly device comprises an elastic chuck 1, a push rod 2 and a handle 3, wherein the elastic chuck 1 is tubular with openings at both ends, the outer wall of the lower end of the elastic chuck is projected as a regular trapezoid on a plane A4 parallel to the axis of the elastic chuck 1, the inner wall of the lower end of the elastic chuck 1 is projected as an isosceles inverted trapezoid A on the plane A4, the lower end of the push rod 2 is projected as an isosceles inverted trapezoid B on the plane A4, 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 push rod 2 is coaxially inserted into the elastic chuck 1, the handle 3 is radially arranged at the top end of the push 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 a first external thread matching the threaded hole is provided between the two ends of the push rod 2.
[0021] In this embodiment, when in use, the lower end of the elastic collet 1 is inserted into the inner hole of the impeller 11, and then the handle 3 is rotated, and the elastic collet 1 and the fixer are held by hand at the same time (of course, the elastic collet 1 and the fixer can also be clamped with other tools, such as pliers) so that the elastic collet 1 and the fixer do not rotate. Since the push rod 2 is threadedly connected to the threaded hole on the fixer, the push rod 2 also rotates during the rotation of the handle 3, so that the push rod 2 continuously moves toward the inside of the fixer, and then the lower end of the push rod 2 is continuously inserted into the elastic collet 1. Since the projection of the lower end of the push rod 2 on the plane A4 is an isosceles inverted trapezoid B, and the projection of the inner wall of the lower end of the elastic collet 1 on the plane A4 is an isosceles inverted trapezoid A, so, during the process of inserting the push rod 2 into the lower end of the elastic collet 1, the lower end of the elastic collet 1 is continuously expanded, so that the side wall of the lower end of the elastic collet 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 push rod 2 extends out of the lower end of the elastic collet 1 (that is, axially penetrates the elastic collet 1), so that the elastic collet 1 and the impeller 11 move upward together (moving away from the motor output shaft 12), and finally remove the impeller 11. Since the handle 3 has a lever effect, it is relatively labor-saving. Secondly, when the push rod 2 is inserted into the lower end of the elastic collet 1, the four sides of the elastic collet 1 are expanded at the same time to support the inner hole of the impeller 11. Therefore, the force on the inner hole of the impeller 11 is uniform during the upward movement of the elastic collet 1.
[0022] As a preferred mode, the fixing device 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 to the top wall, the threaded hole is coaxially arranged on the top wall, the rotating sleeve 5 is fixedly connected to 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. With such a design, when fixing the rotating sleeve 5, it is only necessary to insert an iron rod into the blind hole 6 and then hold it with the hand, so that the rotating sleeve 5 and the elastic chuck 1 can be ensured not to rotate during the process of turning the rotating handle 3, and the design of the telescopic structure makes it possible to adjust the length of the elastic chuck 1 extending out of the rotating sleeve 5.
[0023] As a preferred embodiment, the telescopic structure includes an elastic sleeve 7 and a top block 8. The elastic chuck 1 is a tubular structure with openings at both ends. The upper end of the elastic chuck 1 is provided with a second external thread, and the circumferential wall is provided with an internal thread matching the second external thread. The top end of the elastic chuck 1 is coaxially inserted into the elastic sleeve 7, and the top block 8 is installed in the elastic sleeve 7 between the top end of the elastic chuck 1 and the top wall. The bottom of the side wall of the elastic sleeve 7 is provided with a limiting device matching 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 such arrangement, before removing the impeller 11, first hold the elastic sleeve clamp 7, then rotate the rotating sleeve 5. During the rotation of the rotating sleeve 5, the elastic sleeve 7 moves axially toward the inside of the rotating sleeve 5. During this process, the top wall of the rotating sleeve 5 presses against the top 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 continues to rotate relative to the elastic sleeve 7 until the limit device and the top block 8 completely clamp the elastic chuck 1. In this way, it can be ensured that when the rotating sleeve 5 is fixed during the rotation of the top rod 2, the elastic chuck 1 will not rotate. Such a design method 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. And because the rotating sleeve 5 is provided, it is convenient to limit the elastic chuck 1 during use so that the elastic chuck 1 will not rotate with the rotation of the handle 3.
[0025] As a preferred embodiment, the limiting device includes an opening at the lower end of the elastic jacket 7, the outer circumferential surface of the top end of the elastic collet 7 is projected in the plane A as an inverted trapezoid C, the opening at the lower end of the elastic jacket 7 is projected in the plane A4 as an inverted trapezoid D, 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. Such a configuration makes the elastic jacket 7 more stable when clamping the elastic collet 1.
[0026] As a preferred mode, the two ends of the handle 3 are radially connected to the push rod 2. After such arrangement, after the rotating sleeve 5 is fixed, the handle 3 can be held with two hands, and one hand can hold one end of the handle 3, so that the force applied to the handle 3 for rotation is greater.
[0027] As a preferred mode, a through hole is radially provided at the top end of the mandrel 2, and the handle 3 is inserted through the through hole. Such a through hole is provided to facilitate adjusting the radial length of the end of the handle 3 on the mandrel 2 according to the usage scenario.
[0028] As a preferred embodiment, the ejector block 8 includes a spacer sleeve 9 and a compression sleeve 10, the compression sleeve 10 is coaxially arranged in the elastic clamp sleeve 7, the top end of the compression sleeve 10 is coaxially arranged with the spacer sleeve 9 in the compression sleeve 10, and the two ends of the ejector rod 2 penetrate the compression sleeve 10 and the spacer sleeve 9. Such an arrangement makes the force between the top end of the elastic clamp 1 and the rotating sleeve 5 uniform.
[0029] As a preferred embodiment, the height of the isosceles inverted trapezoid B is greater than the height of the isosceles inverted trapezoid A. This design ensures that after the push rod 2 extends to the lower end of the elastic collet 1, a radial force is still applied to the inside of the elastic collet 1.
[0030] Preferably, Figure 3 As shown, the elastic clamp 1 can be made of steel with toughness, and then some notches are set at both ends of the elastic clamp 1, so that the end of the elastic clamp 1 can have radial expansion and contraction ability.
Claims
1. A vertical high-speed direct-drive closed impeller disassembly device, characterized in that: The invention comprises an elastic chuck (1), a push rod (2), and a handle (3); the elastic chuck (1) is in the shape of a tube with two ends open; the outer wall of the lower end of the elastic chuck is projected on a plane A (4) parallel to the axis of the elastic chuck (1) as a regular trapezoid; the inner wall of the lower end of the elastic chuck (1) is projected on the plane A (4) as an isosceles inverted trapezoid A; the lower end of the push rod (2) is projected on the plane A (4) as an isosceles inverted trapezoid B; the top of the isosceles inverted trapezoid B is projected on the plane A (4) as an isosceles inverted trapezoid B; The length of the side is smaller than the length of the base of the isosceles inverted trapezoid A, the length of the base of the isosceles inverted trapezoid B is larger than the length of the top of the isosceles inverted trapezoid A, the push rod (2) is coaxially inserted into the elastic chuck (1), the handle (3) is radially arranged at the top of the push rod (2), the top of the elastic chuck (1) is coaxially provided with a fixer, the fixer is coaxially provided with a threaded hole, and a first external thread matching the threaded hole is arranged between the two ends of the push rod (2).
2. A vertical high-speed direct-drive closed impeller disassembly device according to claim 1, characterized in that: The fixing device comprises a rotating sleeve (5), the rotating sleeve (5) having a top wall and a circumferential wall, the top end of the circumferential wall being fixedly connected to the top wall, the threaded hole being coaxially arranged on the top wall, the rotating sleeve (5) being fixedly connected to the upper end of the elastic clamp (1) via a telescopic structure, and a blind hole (6) being radially arranged on the circumferential surface of the rotating sleeve (5).
3. A vertical high-speed direct-drive closed impeller disassembly device according to claim 2, characterized in that: The telescopic structure comprises an elastic clamp (7) and a top block (8); the elastic clamp (1) is a tubular structure with two ends open; a second external thread is provided at the upper end of the elastic clamp (1); an internal thread matching the second external thread is provided in the circumferential wall; the top end of the elastic clamp (1) is coaxially inserted into the elastic clamp (7); the top block (8) is installed in the elastic clamp (7) between the top end of the elastic clamp (1) and the top wall; a limiting device matching the top end of the elastic clamp (1) is provided at the bottom of the side wall of the elastic clamp (7); the outer edge of the top end of the elastic clamp (1) is between the limiting device and the top block (8).
4. A vertical high-speed direct-drive closed impeller disassembly device according to claim 3, characterized in that: The limiting device comprises 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 clamp (7) 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 A (4) is an inverted trapezoid D, and the length of the base of the inverted trapezoid C is between the length of the base of the inverted trapezoid D and the length of the top of the inverted trapezoid D.
5. A vertical high-speed direct-drive closed impeller disassembly device according to claim 1, characterized in that: The two ends of the handle (3) are radially connected to the push rod (2).
6. A vertical high-speed direct-drive closed impeller disassembly device according to claim 5, characterized in that: A through hole is radially provided at the top end of the push rod (2), and the handle (3) is inserted through the through hole.
7. A vertical high-speed direct-drive closed impeller disassembly device according to claim 3, characterized in that: The top block (8) comprises a spacer sleeve (9) and a compression sleeve (10), wherein the compression sleeve (10) is coaxially arranged in the elastic sleeve (7), the top end of the compression sleeve (10) is coaxially arranged in the compression sleeve (10), and the compression sleeve (10) and the spacer sleeve (9) are passed through between the two ends of the top rod (2).
8. A vertical high-speed direct-drive closed impeller disassembly 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.