Dual-drive speed reducer and electric cylinder with same
By designing a dual-drive reducer and combining manual and motor drives, and utilizing the reverse self-locking principle of worm gears and worms, the problem of low control accuracy of ordinary motors is solved, achieving high-precision position control and improved safety.
Patent Information
- Application Number
- CN202520465717.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-17
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2035-03-17
AI Technical Summary
In existing technologies, the control precision of ordinary motors is relatively low, making it difficult to achieve high-precision position control of electric cylinders.
It adopts a dual-drive reducer, combining manual and motor drive modes. High-precision position control is achieved through the first and second transmission components. The reverse self-locking principle of worm gear and worm eliminates the motor drive stroke error. After manual adjustment, the motor is started to complete the subsequent drive.
It achieves high-precision position control, reduces production costs, saves installation space, and improves the safety and sealing performance of the reducer.
Smart Images
Figure CN223578741U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of speed reducer, specifically relates to a double drive speed reducer and electric cylinder with same. BACKGROUND
[0002] In the field of modern industrial automation, in order to reduce cost, electric cylinder will consider using ordinary motor to drive electric cylinder, and using speed reducer as transmission structure.But the control precision of ordinary motor is low, and the application of electric cylinder usually requires high-precision position control, so that the electric cylinder needs to be adjusted by accurate signal when operating to complete accurate motion track, but the control system of ordinary motor is difficult to realize such subtle adjustment, in order to solve such problems, the present application provides a double drive speed reducer and electric cylinder with same, which adopts manual and motor driving mode to complete high-precision position control. SUMMARY
[0003] The utility model aims at solving one of the technical problems in prior art.
[0004] Therefore, the utility model provides a double drive speed reducer and electric cylinder with same, which has the advantages of accurate position adjustment.
[0005] The double drive speed reducer according to the utility model embodiment comprises a motor, a first transmission assembly and a second transmission assembly.The motor comprises a motor shaft;one end of the first transmission assembly is used for connecting the motor shaft, and the other end of the first transmission assembly is used for connecting the output assembly of the electric cylinder; the first transmission assembly is used for converting and transmitting the kinetic energy of the motor to the output assembly of the electric cylinder; one end of the second transmission assembly is provided with a hand crank, and the other end of the second transmission assembly is connected with the first transmission assembly; the second transmission assembly is used for transmitting the kinetic energy of the hand crank to the first transmission assembly to be transmitted to the output assembly of the electric cylinder through the first transmission assembly; the first transmission assembly comprises an output shaft, a plurality of planetary gears, a transmission shaft and a gear ring; a plurality of planetary gear bearings are connected to one end of the output shaft; a plurality of planetary gears are distributed in a circular array with the central shaft of the output shaft as the axis; a plurality of planetary gears are engaged with the gear ring; and the other end of the output shaft is connected with the output assembly; one end of the transmission shaft is fixedly connected with the motor shaft, and the other end of the transmission shaft is formed with a sun gear engaged with a plurality of planetary gears; the second transmission assembly comprises a worm gear and a worm; the end of the worm gear is fixedly connected with the gear ring; one end of the worm is connected with the hand crank; and the worm and the worm gear are in screw transmission.
[0006] According to one embodiment of the utility model, the other end of hand lever is fixedly connected with hand wheel, one end of worm is formed with gear that engages with hand wheel, and hand wheel is located inside the shell.
[0007] According to one embodiment of the utility model, the other end of hand lever is fixedly connected with hand wheel, one end of worm is formed with gear that engages with hand wheel, and hand wheel is located inside the shell.
[0008] According to one embodiment of the utility model, the other end of hand lever is fixedly connected with hand wheel, one end of worm is formed with gear that engages with hand wheel, and hand wheel is located inside the shell.
[0009] According to one embodiment of the utility model, the other end of hand lever is fixedly connected with hand wheel, one end of worm is formed with gear that engages with hand wheel, and hand wheel is located inside the shell.
[0010] According to one embodiment of the utility model, the third transmission assembly comprises: upper gear, lower gear and transition gear, the upper gear is fixedly installed on the output shaft, the lower gear is connected with the output assembly of electric cylinder, the transition gear is arranged between the upper gear and the lower gear, and the transition gear, the upper gear and the lower gear are in meshing transmission.
[0011] According to one embodiment of the utility model, the third transmission assembly is externally provided with a gear box, the upper gear, the lower gear and the transition gear are arranged inside the gear box, and the transition gear bearing is connected to the inner surface of the gear box.
[0012] According to one embodiment of the utility model, the output assembly of electric cylinder comprises: ball screw, screw nut, limiting assembly and piston assembly, one end of the ball screw is fixedly connected with the lower gear, the screw nut and the piston assembly are fixedly connected, the screw nut is sleeved on the ball screw, the limiting assembly is connected with the screw nut, and the limiting assembly is used for limiting the rotation of the screw nut.
[0013] According to one embodiment of the utility model, the output assembly of electric cylinder comprises: ball screw, screw nut, limiting assembly and piston assembly, one end of the ball screw is fixedly connected with the lower gear, the screw nut and the piston assembly are fixedly connected, the screw nut is sleeved on the ball screw, the limiting assembly is connected with the screw nut, and the limiting assembly is used for limiting the rotation of the screw nut.
[0014] According to one embodiment of the utility model, the gear box is sealingly connected with the outer cylinder, and the other end of the ball screw is located inside the gear box.
[0015] The utility model discloses the beneficial effect is, the utility model discloses the second transmission subassembly combines the first transmission subassembly and realizes the combination of hand shake drive and motor drive subassembly, saves the component required by double drive transmission, realizes the installation space of saving, reduces the production cost simultaneously, and through manual adjustment eliminates the error of motor drive and required drive stroke, and then starts the motor, completes the subsequent drive operation, realizes the high-precision position control, owing to the reverse self-locking principle of worm wheel and worm, also realizes the reverse self-locking of speed reducer, improves the security of speed reducer.
[0016] Other features and advantages of the utility model will be set forth in the subsequent description, and, partially become obvious from the description, or understand from the implementation of the utility model.
[0017] In order to make the above purpose, feature and advantage of the utility model more obvious and easy to understand, the following preferred embodiment is taken, and the detailed description is as follows in conjunction with the attached drawings. BRIEF DESCRIPTION OF DRAWINGS
[0018] The above and / or additional aspects and advantages of the utility model will become apparent and easy to understand from the following description of embodiments with reference to the accompanying drawings, in which:
[0019] Figure 1 It is the overall structure of the utility model section view schematic diagram;
[0020] Figure 2 It is the overall structure of the utility model schematic diagram;
[0021] Figure 3 It is the utility model A area enlarged schematic diagram;
[0022] Figure 4 It is the utility model B area enlarged schematic diagram;
[0023] Figure 5 It is the utility model worm face section view schematic diagram;
[0024] Figure 6 It is the utility model planet wheel face section view schematic diagram;
[0025] Reference signs:
[0026] 1, motor;2, transmission shaft;3, worm;4, worm wheel;6, motor shaft;10, hand shake lever;11, gear ring;12, output shaft;13, protective cover;14, planet wheel;15, shell;20, gear box;23, upper gear;26, transition gear;29, lower gear;30, ball screw;31, screw nut;32, piston assembly;35, hand wheel;36, outer cylinder. DETAILED DESCRIPTION
[0027] The embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, for the purpose of explanation, and are not to be understood as a limitation of the present application.
[0028] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application. In addition, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.
[0029] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements inside. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0030] The double-drive speed reducer and electric cylinder with the same according to the embodiments of the present application are described in detail below with reference to the drawings.
[0031] As Figures 1-6As shown, according to the double drive speed reducer of the embodiment of the utility model, comprising: motor 1, first transmission assembly and second transmission assembly, motor 1 includes motor shaft 6, one end of first transmission assembly is used for connecting motor shaft 6, the other end of first transmission assembly is used for connecting the output assembly of electric cylinder, first transmission assembly is used for converting and transmitting the kinetic energy of motor 1 to the output assembly of electric cylinder, one end of second transmission assembly is equipped with hand lever 10, the other end of second transmission assembly is connected with first transmission assembly, second transmission assembly is used for transmitting the kinetic energy of hand lever 10 to first transmission assembly, to be transmitted to the output assembly of electric cylinder by first transmission assembly, first transmission assembly includes: output shaft 12, multiple planetary gears 14, transmission shaft 2 and gear ring 11, multiple planetary gears 14 bearing connection is in one end of output shaft 12, multiple planetary gears 14 are circular array distribution with the center shaft of output shaft 12 as the axis, multiple planetary gears 14 are all engaged with gear ring 11, and the other end of output shaft 12 is connected with output assembly, one end of transmission shaft 2 is fixedly connected with motor shaft 6, and the other end of transmission shaft 2 is formed with sun gear engaged with multiple planetary gears 14, second transmission assembly includes: worm wheel 4, worm 3, the end of worm wheel 4 is fixedly connected with gear ring 11, one end of worm 3 is connected with hand lever 10, and worm 3 is in screw thread transmission with worm wheel 4.
[0032] In the embodiment, the number of planetary gears 14 is three, the worm wheel 4 is sleeved on the transmission shaft 2, and the worm wheel 4 is bearing connected with the transmission shaft 2, the worm 3 is bearing connected in the inside of the shell 15, and the hand lever 10 is bearing connected with the shell 15. When driving by hand, the motor shaft 6 and the transmission shaft 2 are in a tight state, that is, they are in a fixed state, at this time, the hand lever 10 is rotated to drive the worm 3 to rotate, the rotation of the worm 3 drives the worm wheel 4 to rotate, in the process of rotating the worm wheel 4, the gear ring 11 fixedly connected with it rotates, at this time, the gear ring 11 drives multiple planetary gears 14 to rotate, because the transmission shaft 2 is in a tight state, the rotating planetary gears 14 rotate around the sun gear on the transmission shaft 2 to realize the rotation of the planetary gears 14 to drive the output shaft 12, thereby realizing the effect of manual adjustment. When the motor 1 drives, the motor 1 starts, the motor shaft 6 drives the transmission shaft 2 to rotate, so that the sun gear on the transmission shaft 2 drives the planetary gears 14 to rotate, at this time, because the gear ring 11 is fixedly connected with the worm wheel 4, under the principle of reverse self-locking of the worm wheel 4 and the worm 3, the planetary gears 14 rotate along the gear ring 11, thereby driving the output shaft 12 to rotate, to realize the effect of driving by the motor 1. When there is a certain error between the driving of the motor 1 and the required driving stroke, the error is eliminated by manual adjustment, and then the motor 1 is started again to complete the subsequent driving operation, realizing high-precision position control. Because of the reverse self-locking principle of the worm wheel 4 and the worm 3, the reverse self-locking of the speed reducer is realized, and the safety of the speed reducer is improved. The combination of the first transmission assembly and the second transmission assembly realizes the combination of the hand drive and the motor 1 drive assembly, saves the components required for double drive transmission, realizes the saving of installation space, and reduces the production cost.
[0033] As Figures 1-3 shown, including the shell 15, one end of the shell 15 and motor 1 sealed connection, the other end of the shell 15 and electric cylinder output assembly sealed connection, the first transmission assembly and the second transmission assembly are installed in the shell 15 inside, the motor shaft 6 into the shell 15 inside, the other end of the output shaft 12 into the electric cylinder output assembly, one end of the hand lever 10 protruding from the shell 15.
[0034] In this embodiment, the shell 15 is used to complete the connection with the motor 1, the output assembly of the electric cylinder, the first transmission assembly and the second transmission assembly are combined in the shell 15, so as to realize the dual drive of manual and electric drive. The manual drive part is added to the original connection part, which avoids the additional connection with the output assembly of the electric cylinder, reduces the connection port, and ensures the sealing performance of the connection.
[0035] As Figure 5 shown, the other end of the hand lever 10 is fixedly connected with a hand wheel 35, one end of the worm 3 is formed with a gear tooth engaged with the hand wheel 35, and the hand wheel 35 is located in the inside of the shell 15.
[0036] The side of the shell 15 is provided with a protective cover 13, and one end of the hand lever 10 is located in the inside of the protective cover 13.
[0037] In this embodiment, the protective cover 13 is connected with the shell 15 by bolts, which further realizes the sealing effect of the shell 15. When manual driving is not needed, the rotation of the worm 3 caused by collision is avoided. When manual driving is needed, the protective cover 13 is opened, the hand lever 10 is exposed, and then the hand lever 10 is rotated.
[0038] An electric cylinder adopts the above-mentioned double drive speed reducer, a third transmission assembly is arranged between the output assembly of the electric cylinder and the output shaft 12, the third transmission assembly is used for transmitting the kinetic energy of the output shaft 12 to the output assembly of the electric cylinder, so that the double drive speed reducer is arranged side by side with the output assembly of the electric cylinder.
[0039] As Figure 1 , 3 -4, the third transmission assembly comprises an upper gear 23, a lower gear 29 and a transition gear 26; the upper gear 23 is fixedly installed on the output shaft 12, the lower gear 29 is connected with the output assembly of the electric cylinder, the transition gear 26 is arranged between the upper gear 23 and the lower gear 29, and the transition gear 26, the upper gear 23 and the lower gear 29 are in meshing transmission.
[0040] The third transmission assembly is provided with a gear box 20, the upper gear 23, the lower gear 29 and the transition gear 26 are arranged in the inside of the gear box 20, and the transition gear 26 is bearing connected to the inner surface of the gear box 20.
[0041] In this embodiment, the transition gear 26 is connected to the inside of the gear box 20, and when the output shaft 12 rotates, the upper gear 23 fixedly connected thereto rotates, thereby driving the transition gear 26 engaged therewith to rotate, and the rotating transition gear 26 drives the lower gear 29 to rotate, and at this time, the lower gear 29 drives the output assembly of the electric cylinder to rotate, and the third transmission assembly is adopted to realize the side-by-side arrangement of the double-drive speed reducer and the output assembly of the electric cylinder, thereby saving the required length for installation, so as to increase the applicable scene of the electric cylinder installation.
[0042] As shown in Figure 1 , 4 , the output assembly of the electric cylinder comprises a ball screw 30, a screw nut 31, a limiting assembly and a piston assembly 32; one end of the ball screw 30 is fixedly connected with the lower gear 29, the screw nut 31 and the piston assembly 32 are fixedly connected, the screw nut 31 is sleeved on the ball screw 30, and the limiting assembly is connected with the screw nut 31, and the limiting assembly is used for limiting the rotation of the screw nut 31.
[0043] As shown in Figures 1-2 , the output assembly of the electric cylinder comprises an outer cylinder 36, the screw nut 31, the limiting assembly and the piston assembly 32 are arranged in the inside of the outer cylinder 36, one end of the ball screw 30 is located in the inside of the outer cylinder 36, and the other end of the ball screw 30 protrudes from the outer cylinder 36.
[0044] The gear box 20 is sealingly connected with the outer cylinder 36, and the other end of the ball screw 30 is located in the inside of the gear box 20.
[0045] In this embodiment, the limiting assembly can be a guide groove or other assembly that can prevent the screw nut 31 from rotating, so that the screw nut 31 moves linearly when the ball screw 30 rotates. The gear box 20 is sealingly connected with the outer cylinder 36 and the shell 15, respectively, and the shell 15 is sealingly connected with the motor 1, thereby ensuring the sealing property of the electric cylinder.
[0046] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0047] Although the embodiments of the utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the utility model, and the scope of the utility model is defined by the claims and their equivalents.
Claims
1. A dual drive speed reducer characterized by, The utility model relates to a double drive speed reducer, comprising: a motor (1) comprising a motor shaft (6); a first transmission assembly, one end of which is connected to the motor shaft (6) and the other end of which is connected to an output assembly of an electric cylinder, for converting and transmitting the kinetic energy of the motor to the output assembly of the electric cylinder; a second transmission assembly, one end of which is provided with a hand lever (10) and the other end of which is connected to the first transmission assembly, for transmitting the kinetic energy of the hand lever (10) to the first transmission assembly and then to the output assembly of the electric cylinder through the first transmission assembly; the first transmission assembly comprises an output shaft (12), a plurality of planetary gears (14), a transmission shaft (2) and a ring gear (11); the plurality of planetary gears (14) are bearing-connected to one end of the output shaft (12), are distributed in a circular array around the central shaft of the output shaft (12), are each engaged with the ring gear (11) and the other end of the output shaft (12) is connected to the output assembly; one end of the transmission shaft (2) is fixedly connected to the motor shaft (6) and the other end of the transmission shaft (2) is formed with a sun gear engaged with the plurality of planetary gears (14); the second transmission assembly comprises a worm gear (4) and a worm shaft (3); one end of the worm gear (4) is fixedly connected to the ring gear (11) and one end of the worm shaft (3) is connected to the hand lever (10); the worm shaft (3) is in threaded transmission with the worm gear (4).
2. The dual drive speed reducer of claim 1, wherein, a housing (15) is provided, one end of which is sealingly connected to the motor (1) and the other end of which is sealingly connected to the output assembly of the electric cylinder; the first transmission assembly and the second transmission assembly are both installed inside the housing (15); the motor shaft (6) penetrates into the inside of the housing (15); the other end of the output shaft (12) penetrates into the output assembly of the electric cylinder; one end of the hand lever (10) protrudes out of the housing (15).
3. The dual drive speed reducer of claim 2, wherein, the other end of the hand lever (10) is fixedly connected to a hand wheel (35); one end of the worm shaft (3) is formed with a gear tooth engaged with the hand wheel (35); the hand wheel (35) is located inside the housing (15).
4. The dual drive speed reducer of claim 3, wherein, a protective cover (13) is installed on one side of the housing (15); one end of the hand lever (10) is located inside the protective cover (13).
5. An electric cylinder characterized by the double drive speed reducer according to any one of claims 1-4 is provided with a third transmission assembly between the output assembly of the electric cylinder and the output shaft (12), for transmitting the kinetic energy of the output shaft (12) to the output assembly of the electric cylinder, so that the double drive speed reducer and the output assembly of the electric cylinder are arranged side by side.
6. The electric cylinder according to claim 5, characterized by The third transmission assembly comprises an upper gear (23), a lower gear (29) and a transition gear (26); the upper gear (23) is fixedly installed on the output shaft (12), the lower gear (29) is connected with the output assembly of the electric cylinder, and the transition gear (26) is arranged between the upper gear (23) and the lower gear (29); the transition gear (26), the upper gear (23) and the lower gear (29) are in meshing transmission.
7. The electric cylinder according to claim 6, characterized by The third transmission assembly is externally provided with a gear box (20), the upper gear (23), the lower gear (29) and the transition gear (26) are arranged in the interior of the gear box (20), and the transition gear (26) is bearing-connected to the inner surface of the gear box (20).
8. The electric cylinder according to claim 7, characterized by The output assembly of the electric cylinder comprises a ball screw (30), a screw nut (31), a limiting assembly and a piston assembly (32); one end of the ball screw (30) is fixedly connected with the lower gear (29), the screw nut (31) and the piston assembly (32) are fixedly connected, the screw nut (31) is sleeved on the ball screw (30), the limiting assembly is connected with the screw nut (31), and the limiting assembly is used for limiting the rotation of the screw nut (31).
9. The electric cylinder according to claim 8, characterized by The output assembly of the electric cylinder comprises an outer cylinder (36), the screw nut (31), the limiting assembly and the piston assembly (32) are arranged in the interior of the outer cylinder (36), one end of the ball screw (30) is located in the interior of the outer cylinder (36), and the other end of the ball screw (30) protrudes from the outer cylinder (36).
10. The electric cylinder according to claim 9, characterized by The gear box (20) is sealingly connected with the outer cylinder (36), and the other end of the ball screw (30) is located in the interior of the gear box (20).