Hand wheel with speed change function
By introducing a combined structure of planetary gears and sun gears into the hand-crank wheel, combined with index handles and drive handles, the problem of traditional hand-crank wheels being unable to switch rotation speeds is solved, achieving more flexible operation and adaptability.
Patent Information
- Application Number
- CN202420736045.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-10
- Publication Date
- 2025-03-14
- Estimated Expiration
- 2034-04-10
AI Technical Summary
Traditional hand-cranked wheels cannot effectively switch the rotation rate, which is inconvenient to operate when adapting to different speed requirements.
A rotating assembly with planetary gears and sun gears is designed to switch the speed increase ratio through gear meshing, and combined with the structure of the index handle and the drive handle, the rate adjustment between manual input and output is achieved.
It realizes flexible switching of the hand-crank wheel when different speeds are required, improving the convenience and adaptability of operation.
Smart Images
Figure CN222615933U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of hand-cranked wheels, in particular to a hand-cranked wheel with a speed-changing function. Background Art
[0002] A hand crank is a common device used to manually rotate a certain component. It is convenient for users to manually rotate the wheel to drive the rotating part to rotate. The traditional hand crank can only achieve 1:1 input, that is, when the hand wheel is manually rotated one circle, the hand wheel output hole also rotates one circle accordingly. In most manual input occasions, slow rotation is required when loaded, and when the equipment is unloaded, a fast return stroke is often required. The traditional hand crank can only speed up the rotation speed of the personnel's arm, but the rotation speed ratio of the arm is limited, which is not convenient for switching the driven rotation application scenario, has low adaptability, and is not convenient for operation. Utility Model Content
[0003] 1. Technical issues to be resolved
[0004] In view of the deficiencies in the prior art, the utility model provides a hand-cranked wheel with a speed-changing function, which enables the rotation part to switch between a speed-increasing state and a normal speed, and is convenient for adapting to occasions requiring different speeds and facilitating operation.
[0005] (II) Technical solution
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hand-cranked wheel with a speed-changing function, comprising a rotating component 1 and a rotating component 2;
[0007] The first rotating assembly includes a gear ring rim, a rotation handle and an outer gear ring, the gear ring rim and the rotation handle are rotatably connected, and the rotation handle is connected to the outer gear ring;
[0008] Rotating component 2 includes planetary gears, a sun gear, a supporting shaft, a planetary gear bracket and a planetary carrier rim. The planetary carrier rim and the ring gear rim are arranged opposite to each other. The planetary gear bracket is connected to the planetary carrier rim. Several supporting shafts are connected to the planetary gear bracket. Each supporting shaft is rotatably connected with a planetary gear. The planetary gears are meshed with the outer ring gear. The sun gear is connected to the planetary gear bracket. The sun gear is provided with a tooth shape meshing with the planetary gears. The planetary carrier rim is provided with a groove corresponding to the indexing handle.
[0009] Preferably, the rotating component 2 also includes bearing 1 and bearing 2, bearing 1 is connected to the gear ring rim, the sun gear passes through the middle mounting hole of bearing 1, bearing 2 is installed on the planetary gear bracket, and the sun gear passes through the middle mounting hole of bearing 2.
[0010] Preferably, the rotating component 2 also includes an end cover 1, the end cover 1 is connected to the rim of the ring gear, and the end cover 1 is provided with a limiting hole for installing the bearing 1.
[0011] Preferably, the second rotating component further comprises a driving handle, and the driving handle is mounted on the rim of the planetary carrier.
[0012] Preferably, a positioning hole is provided on the sun gear, and a keyway for installing a key is provided inside the positioning hole.
[0013] Preferably, the second rotating component further comprises a second end cover, the planetary gear bracket is provided with holes corresponding to the outer ring of the second bearing, and the planetary gear bracket is connected with the second end cover for limiting the position of the second bearing.
[0014] Preferably, a cylinder is provided at the root of the indexing handle, and the cylinder can be located inside the groove of the planet carrier rim.
[0015] (III) Beneficial effects
[0016] Compared with the prior art, the utility model provides a hand-cranked wheel with a speed-changing function, which has the following features:
[0017] Beneficial effects:
[0018] The hand-cranked wheel with speed change function rotates the rim of the gear ring, which drives the outer gear ring to rotate. The outer gear ring meshes with the planetary gears, which in turn drives the planetary gears to rotate. The planetary gears mesh with the sun gear. The three planetary gears revolve around the sun gear (number of teeth Z3) at a speed of V1. Since the planetary gears (number of teeth Z1) mesh with the stationary outer gear ring (number of teeth Z2), the planetary gears rotate at a speed of Z2 / Z1. During the rotation of the planetary gears, the sun gear is driven to rotate at a speed of Z2 / Z3. Z2 / Z3 is the speed increase ratio of the planetary gear system. This process realizes In order to achieve the speed-increasing effect of manually rotating the planet carrier rim for one circle and the sun gear for Z2 / Z3 circles, when normal speed is required, the indexing handle is stuck in the groove of the planet carrier rim so that the ring gear rim and the planet carrier rim can rotate together. At this time, the planetary gear bracket and the outer ring gear cannot make relative rotational motion, and the planetary gear train is in a locked state, so that the sun gear rotates with the planet carrier rim, and the handle inputs one circle and the sun gear also rotates one circle. This structure enables the rotation part to switch between the speed-increasing state and the normal speed, which is convenient for adapting to occasions requiring different speeds. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a schematic diagram of the structure of the utility model;
[0020] Figure 2 For this utility model Figure 1 Schematic diagram of the cross-sectional structure at AA in the middle;
[0021] Figure 3 For this utility model Figure 2 A schematic diagram of the local enlarged structure at point A in the middle;
[0022] Figure 4 For this utility model Figure 2 A schematic diagram of the local enlarged structure at B in the middle;
[0023] Figure 5 This is a schematic diagram of the structure of the outer gear ring, planetary gears and sun gear of the utility model;
[0024] Figure 6 It is a three-dimensional structural schematic diagram of the utility model;
[0025] Figure 7 It is a three-dimensional structural schematic diagram of the utility model in a normal speed state;
[0026] Figure 8 This is a schematic diagram of the structure of the utility model in a normal speed state;
[0027] Fig. 9 It is a schematic diagram of the three-dimensional structure of the utility model in the speed-increasing state;
[0028] Fig.10 It is a structural schematic diagram of the utility model in the speed increasing state.
[0029] Markings in the attached figure: 1. gear ring rim; 2. shift handle; 3. outer gear ring; 4. planetary gear; 5. sun gear; 6. bearing one; 7. bearing two; 8. support shaft; 9. planetary gear bracket; 10. planetary carrier rim; 11. drive handle; 12. end cover one; 13. groove; 14. end cover two. DETAILED DESCRIPTION
[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0031] Example:
[0032] See also Figure 1-10 , a hand-cranked wheel with a speed-changing function, comprising a rotating component one and a rotating component two.
[0033] The first rotating component comprises a gear ring rim 1, a rotation handle 2 and an outer gear ring 3. The gear ring rim 1 and the rotation handle 2 are rotationally connected, and the rotation handle 2 and the outer gear ring 3 are connected.
[0034] Rotating component 2 includes planetary gears 4, sun gear 5, support shaft 8, planetary gear 4 bracket and planetary carrier rim 10. Planetary carrier rim 10 and gear ring rim 1 are arranged oppositely. Planetary gear 4 bracket is connected to planetary carrier rim 10. Several support shafts 8 are connected to planetary gear 4 bracket. Planetary gear 4 is rotatably connected to each support shaft 8. Planetary gear 4 is meshed with outer gear ring 3. Sun gear 5 is connected to planetary gear 4 bracket. Sun gear 5 is provided with a tooth shape meshed with planetary gear 4. Planetary carrier rim 10 is provided with a groove 13 corresponding to the indexing handle 2. The number of teeth on outer gear ring 3 and sun gear 5 is greater than the number of teeth on planetary gear 4. By rotating gear ring rim 1, gear ring rim 1 drives outer gear ring 3 to rotate. Outer gear ring 3 meshes with planetary gear 4, thereby driving planetary gear 4 to rotate. Planetary gear 4 meshes with sun gear 5. These three planetary gears 4 rotate around sun gear 5 (number of teeth Z3) at a speed of V1. ) revolves, since the planetary gear 4 (number of teeth Z1) is meshed with the stationary outer ring gear 3 (number of teeth Z2), the planetary gear 4 rotates at a speed of Z2 / Z1, and during the rotation of the planetary gear 4, the sun gear 5 is driven to rotate at a speed of Z2 / Z3, where Z2 / Z3 is the speed increase ratio of the planetary gear system. This process achieves the speed increase effect of manually rotating the planet carrier rim 10 one circle and the sun gear 5 rotating Z2 / Z3 circles. When the normal speed is required, the indexing handle 2 is inserted into the groove 13 of the planet carrier rim 10 so that the ring gear rim 1 and the planet carrier rim 10 can rotate together. At this time, the planetary gear 4 bracket and the outer ring gear 3 cannot make relative rotational motion, and the planetary gear system is in a locked state, so that the sun gear 5 rotates with the planet carrier rim 10, so that the handle inputs one circle and the sun gear 5 also rotates one circle. This structure enables the rotation part to switch between the speed increase state and the normal speed, which is convenient for adapting to occasions requiring different speeds.
[0035] Reference Figure 3 , the rotating component 2 also includes a bearing 1 6 and a bearing 2 7, the gear ring rim 1 is connected with a bearing 1 6, the sun gear 5 passes through the middle mounting hole of the bearing 1 6, and the planetary gear 4 bracket is installed with a bearing 2 7, the sun gear 5 passes through the middle mounting hole of the bearing 2 7, preferably the inner hole diameter of the bearing 2 7 is smaller than the inner hole diameter of the bearing 1 6, and the sun gear 5 is provided with a step 1 corresponding to the bearing 2 7, through the rotation between the bearing 1 6 and the end cover 12, the rotation between the bearing 2 7 and the planetary gear 4 bracket, thereby reducing the wear between the sun gear 5 and the end cover 12, and the wear between the sun gear 5 and the planetary gear 4 bracket, realizing the rotation connection between the sun gear 5, the planetary gear 4 bracket and the end cover 12, which is convenient for disassembly and maintenance.
[0036] Reference Figure 3The rotating component 2 also includes an end cover 12, which is connected to the gear ring rim 1. The end cover 12 is provided with a limiting hole for installing a bearing 6. The sun gear 5 is provided with a step 2 for limiting the inner ring of the bearing 6. The position of the bearing 6 is limited by the end cover 12 and the bearing 6 at the same time, thereby improving the positioning effect of the bearing 6. By disassembling the end cover 12, the bearing 6 can be removed, thereby facilitating the disassembly and assembly of the bearing 6 and the sun gear 5.
[0037] Reference Figure 2 The second rotating component also includes a driving handle 11, and the driving handle 11 is installed on the planet carrier rim 10. By rotating the driving handle 11, the planet carrier rim 10 is driven to rotate, thereby facilitating the rotation of the planet carrier rim 10.
[0038] Reference Figure 3 and 5 A positioning hole is provided on the sun gear 5, and a keyway for installing a key is provided inside the positioning hole. Through the setting of the positioning hole and the keyway, it is convenient to connect with some shaft-like objects through keys.
[0039] Reference Figure 3 The rotating component 2 also includes an end cover 2 14, a hole corresponding to the outer ring of the bearing 2 7 is provided on the planetary gear 4 bracket, and an end cover 2 14 for limiting the position of the bearing 2 7 is connected to the planetary gear 4 bracket, and a step 3 corresponding to the inner ring of the bearing 2 7 is provided on the bearing 1 6. Preferably, the end cover 2 14 and the planetary gear 4 bracket are connected by threads, and the position of the bearing 2 7 is limited by the end cover 2 14, so as to reduce the possibility of the bearing 2 7 falling off and improve the positioning effect of the bearing 2 7.
[0040] Reference Figure 4 A cylinder is provided at the root of the indexing handle 2, and the cylinder can be located inside the groove 13 of the planetary carrier rim 10. By providing the cylinder, the matching strength between the indexing handle 2 and the groove 13 on the planetary carrier rim 10 is improved.
[0041] In most manual input situations, slow rotation is required when loaded, and a fast return stroke is often required when the equipment is unloaded. The invention adds a planetary gear 4 speed-increasing structure and a double-handle structure design to the center of the traditional handwheel. When the manual speed requirement is slower, the indexable handle 2 is turned to the normal speed position, and a slow mode can be achieved in which the arm rotates one circle and the handwheel output also rotates one circle. When the manual speed requirement is faster, the indexable handle 2 is turned to the speed-increasing position, the indexable handle 2 is kept stationary, and the arm rotates the drive handle 11. At this time, the drive handle 11 rotates one circle, and the handwheel output hole can rotate multiple circles. The number of circles depends on the speed-increasing ratio of the planetary gear system, thereby achieving fast input.
[0042] When in use, connect the sun gear 5 to the part that needs to be rotated. When the normal state is required, rotate the indexing handle 2 so that the indexing handle 2 is stuck in the groove 13 on the planetary carrier rim 10. Then pull the indexing handle 2 and the driving handle 11 to drive the rotating part to rotate at a normal speed. When the speed-increasing state is required, make the indexing handle 2 outside the groove 13 on the planetary carrier rim 10, hold the indexing handle 2, keep the indexing handle 2 stationary, so that the indexing handle 2 does not move, and then pull the driving handle 11. The driving handle 11 drives the planetary gear 4 to rotate, and the speed-increasing effect is achieved through the meshing between the outer ring gear 3, the planetary gear 4 and the sun gear 5.
[0043] It should be noted that the phrases "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments", etc. mentioned in the specification indicate that the described embodiments may include certain features, structures or characteristics, but not every embodiment may include the certain features, structures or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when describing certain features, structures or characteristics in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such features, structures or characteristics in conjunction with other embodiments, whether explicitly or not explicitly described.
[0044] It should be easily understood that “on,” “above,” and “over” in the present disclosure should be interpreted in the broadest manner, so that “on” not only means “directly on something,” but also includes the meaning of “on something” with intervening features or layers therebetween, and “above” or “over” not only includes the meaning of “above” or “over,” but also may include the meaning of “above” or “over something” with no intervening features or layers therebetween (i.e., directly on something).
[0045] In addition, spatially relative terms, such as "below," "below," "beneath," "above," "above," etc., may be used herein for ease of description to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation shown in the figures. The device may have other orientations (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein may likewise be interpreted accordingly.
[0046] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.
[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.
Claims
1. A hand-cranked wheel with a speed-changing function, characterized in that: It includes a rotating component 1 and a rotating component 2; The first rotating assembly comprises a gear ring rim (1), a rotation handle (2) and an outer gear ring (3), wherein the gear ring rim (1) and the rotation handle (2) are rotationally connected, and the rotation handle (2) and the outer gear ring (3) are connected; The second rotating assembly comprises a planetary gear (4), a sun gear (5), a support shaft (8), a planetary gear (4) bracket and a planetary gear frame rim (10). The planetary gear frame rim (10) and the gear ring rim (1) are arranged relative to each other. The planetary gear (4) bracket is connected to the planetary gear frame rim (10). A plurality of support shafts (8) are connected to the planetary gear (4) bracket. Each support shaft (8) is rotatably connected to a planetary gear (4). The planetary gear (4) is meshed with an outer gear ring (3). The sun gear (5) is connected to the planetary gear (4) bracket. The sun gear (5) is provided with a tooth shape meshing with the planetary gear (4). The planetary gear frame rim (10) is provided with a groove (13) corresponding to the shifting handle (2).
2. A hand-cranked wheel with a speed-changing function according to claim 1, characterized in that: The rotating assembly 2 also includes a bearing 1 (6) and a bearing 2 (7); the gear ring rim (1) is connected with the bearing 1 (6); the sun gear (5) passes through the middle mounting hole of the bearing 1 (6); the planetary gear (4) bracket is installed with the bearing 2 (7); the sun gear (5) passes through the middle mounting hole of the bearing 2 (7).
3. The hand-cranked wheel with speed-changing function according to claim 2, characterized in that: The rotating assembly 2 also includes an end cover 1 (12), the end cover 1 (12) is connected to the gear ring rim (1), and the end cover 1 (12) is provided with a limiting hole for installing a bearing 1 (6).
4. The hand-cranked wheel with speed-changing function according to claim 1, characterized in that: The second rotating assembly further comprises a driving handle (11), and the driving handle (11) is mounted on the planet carrier rim (10).
5. The hand-cranked wheel with speed-changing function according to claim 1, characterized in that: The sun gear (5) is provided with a positioning hole, and a keyway for installing a key is provided inside the positioning hole.
6. The hand-cranked wheel with speed-changing function according to claim 2, characterized in that: The second rotating assembly also includes a second end cover (14), a hole position corresponding to the outer ring of the second bearing (7) is arranged on the planetary gear (4) bracket, and the second end cover (14) is connected to the planetary gear (4) bracket for limiting the position of the second bearing (7).
7. The hand-cranked wheel with speed-changing function according to claim 1, characterized in that: A cylinder is provided at the root of the indexing handle (2), and the cylinder can be located inside the groove (13) of the planet carrier rim (10).