Speed reducer with reversible input

Abstract

The utility model relates to the technical field of speed reducers, in particular to an input-reversible speed reducer which comprises a machine shell, a cover plate, an output shaft, a base, a worm gear and a worm, the machine shell, the cover plate, the output shaft, the base, the worm gear and the worm form the speed reducer, the worm is coaxially provided with an input shaft, the worm and the worm gear are in meshing transmission connection, and the section, located outside the machine shell, of the input shaft is sleeved with a rotatable reversing cylinder; the radial angle of the reversing cylinder is fixed to the machine shell through a bolt. The reversing cylinder is rotationally connected with an external shaft in transmission with the input shaft in the vertical direction, the external shaft is used for being in coaxial butt joint with an external motor, and the reversing cylinder and an internal transmission part of the reversing cylinder can be detached. The reversing cylinder is additionally arranged on the input shaft, the transmission part in meshing transmission connection with the output shaft and the external connection shaft are arranged in the reversing cylinder, the motor can be installed at the position of the reversing cylinder to be in butt joint with the external connection shaft, the position of the reversing cylinder is fixed through bolts, therefore, installation of the motor in different directions is achieved, and the application range of the installation position of the motor is widened.

Description

Technical Field

[0001] The present application relates to a technical field, and more particularly to a speed reducer with a reversible input. Background Art

[0002] A reducer is an independent component consisting of a gear transmission, a worm transmission, a gear, and a worm transmission enclosed in a rigid housing. It is often used as a reduction transmission device between the prime mover and the working machine. It plays the role of matching the speed and transmitting the torque between the prime mover and the working machine or the actuator. There are many types of reducers available.

[0003] The WPA type reducer is one of them, which utilizes the meshing transmission between the worm and the worm wheel to achieve the deceleration effect. This application is demonstrated based on this type of reducer. In fact, this application can also be applied to other types of reducers.

[0004] Usually, the fixed connection position between the reducer and the motor output shaft is fixed, so the connection position between the motor and the reducer is fixed. In order to ensure a good docking effect, the position of the motor needs to be planned at the beginning of the design. Local space limitations may occur during the design process, resulting in insufficient reserved space for the motor. In order to solve this problem, different types of reducers can only be used to adapt to the environment. Therefore, the competitiveness of the reducer with a fixed motor installation position is limited. Therefore, in order to solve the above problems, the present application provides a reducer with a reversible input.

[0005] The above information disclosed in the background technology is only used to increase the understanding of the background technology of the present application, and therefore, it may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0006] In order to solve the problem that the existing reducer and motor have a fixed docking position and lack a certain competitiveness, the present application provides a reducer with a reversible input.

[0007] The present application provides a speed reducer with reversible input, comprising a housing, a cover plate, an output shaft, a base, a worm wheel and a worm gear constituting the speed reducer, wherein the worm gear is coaxially mounted with the input shaft, the worm gear and the worm wheel are meshingly connected, a section of the input shaft located outside the housing is sleeved with a rotatable reversing cylinder, and the radial angle of the reversing cylinder is fixed to the housing by bolts;

[0008] The reversing cylinder is rotatably connected with an external shaft that transmits power in a direction perpendicular to the input shaft. The external shaft is used to coaxially connect with an external motor. The reversing cylinder and its internal transmission parts are removable.

[0009] Preferably, a section of the input shaft located inside the reversing cylinder has a bevel gear 1 on the upper sleeve, and a section of the external shaft end has a bevel gear 2 on the sliding sleeve, and the bevel gear 2 is meshed and transmission-connected with the bevel gear 1.

[0010] Preferably, a protective cover is provided on one side of the reversing cylinder, and a mounting hole is opened on the protective cover, the circumscribed shaft is located inside the mounting hole, and a collar for stabilizing the position of the circumscribed shaft is provided between the circumscribed shaft and the mounting hole.

[0011] Preferably, an outer cover coaxial with the input shaft is provided on the side of the reversing cylinder away from the casing, and a through hole corresponding to the reversing cylinder is opened on the outer cover, and a bolt fixedly connected to the casing thread is inserted into the through hole.

[0012] Preferably, the casing is slidably installed with end covers at positions corresponding to the input shaft, and the end covers and the input shaft are coaxially arranged, and two bearings matching the input shaft are fixedly installed on the inner sides of the two end covers, and the input shaft passes through one of the two end covers and extends to the inside of the casing.

[0013] Preferably, a bearing 1 is clamped inside the housing at a coaxial position with the output shaft, and the inner ring of the bearing 1 is clamped and fixed to the output shaft.

[0014] Preferably, a bearing 1 is clamped coaxially between the cover plate and the output shaft, and the inner ring of the bearing 1 is clamped and fixed to the output shaft.

[0015] Preferably, the base is bolted fixedly connected to the bottom of the casing.

[0016] In summary, this application includes the following beneficial technical effects:

[0017] By adding a commutator cylinder to the input shaft, and arranging a transmission member and an external shaft inside the commutator cylinder that are meshed and connected to the output shaft, the motor can be installed at the position of the commutator cylinder and docked with the external shaft. The position of the commutator cylinder is fixed with bolts, thereby realizing the installation of the motor in different directions, improving the applicable range of the motor installation position, and realizing the installation of the motor at more angles compared to the existing technology, thereby improving the product competitiveness.

[0018] By changing the gear ratio of bevel gear one and bevel gear two, the deceleration effect of the reducer can be further changed, further improving the practicality of the device.

[0019] By replacing the position of the end cover, the direction of installing the motor can be switched, further improving the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is an isometric drawing in Example 1 of the present application;

[0021] Figure 2It is a rear isometric view in Example 1 of the present application;

[0022] Figure 3 It is an internal structure diagram in the first embodiment of the present application;

[0023] Figure 4 is an exploded diagram of the reversing mechanism in the first embodiment of the present application;

[0024] Figure 5 It is a cross-sectional view of the reversing mechanism in the first embodiment of the present application.

[0025] Explanation of the reference numerals: 1. Casing; 2. Cover plate; 3. Output shaft; 4. Base; 5. Reversing cylinder; 51. Protective cover; 52. Mounting hole; 6. Outer cover; 7. Input shaft; 8. End cover; 9. Worm gear; 10. Bearing 1; 11. Worm; 12. Bearing 2; 13. Bolt; 14. Bevel gear 1; 15. Bevel gear 2; 16. External shaft; 17. Ring. DETAILED DESCRIPTION

[0026] The following is combined with Figure 1 - Figure 5 This application is described in further detail.

[0027] Example 1: Reference Figure 1 - Figure 5 A speed reducer with reversible input includes a casing 1, a cover plate 2, an output shaft 3, a base 4, a worm wheel 9 and a worm 11 constituting the speed reducer. A bearing 10 is clamped coaxially with the output shaft 3 inside the casing 1, and the inner ring of the bearing 10 is clamped and fixed with the output shaft 3. A bearing 10 is clamped coaxially with the cover plate 2 and the output shaft 3, and the inner ring of the bearing 10 is clamped and fixed with the output shaft 3. The base 4 is fixedly connected to the bottom position of the casing 1 by bolts 13. The worm 11 is coaxially mounted with an input shaft 7. The worm 11 and the worm wheel 9 are meshed and driven. A rotatable reversing cylinder 5 is sleeved on a section of the input shaft 7 located outside the casing 1, and the radial angle of the reversing cylinder 5 is fixed to the casing 1 by bolts 13.

[0028] The reversing cylinder 5 is rotatably connected with an external shaft 16 which is vertically transmitted to the input shaft 7. The external shaft 16 is used to be coaxially connected to an external motor. The reversing cylinder 5 and its internal transmission parts can be removed.

[0029] The input shaft 7 is located inside the reversing cylinder 5 and has a bevel gear 14 on the upper sleeve. The end of the external shaft 16 has a bevel gear 2 15 on the sleeve. The bevel gear 2 15 and the bevel gear 1 14 are meshed and connected. The function of the reversing cylinder 5 is to ensure that the position of the external shaft 16 is relatively fixed, and it is also used for docking and fixing with the external motor seat. When reversing, it is only necessary to remove the bolts 13 used to fix the reversing cylinder 5. At this time, the reversing cylinder 5 can rotate around the axis of the input shaft 7, and the bolts 13 are reinstalled at the appropriate position. At this time, the reversing cylinder is completed. 5 is fixed in position, and the motor can be fixedly installed between the commutation cylinder 5 at this time. A protective cover 51 is provided on one side of the commutation cylinder 5, and a mounting hole 52 is opened on the protective cover 51. The circumscribed shaft 16 is located inside the mounting hole 52, and a collar 17 for stabilizing the position of the circumscribed shaft 16 is provided between the circumscribed shaft 16 and the mounting hole 52. The collar 17 has a two-stage structure, which is disposed on both sides of the wall of the protective cover 51 and is fixedly connected by bolts 13. The clearance between the collar 17 and the circumscribed shaft 16 is matched to ensure the stability of the position of the circumscribed shaft 16 on the commutation cylinder 5.

[0030] An outer cover 6 coaxial with the input shaft 7 is provided on the side of the reversing cylinder 5 away from the casing 1, and a through hole corresponding to the reversing cylinder 5 is opened on the outer cover 6, and a bolt 13 threadedly connected to the casing 1 is inserted in the through hole. The reversing cylinder 5 can be removed, and the bevel gear 14 is also removed when the reversing cylinder 5 is removed, that is, the original input shaft 7 and the motor are connected at this time. The detachable installation of the reversing cylinder 5 can switch the reducer state according to actual needs, and on the other hand, when the reversing cylinder 5 is not in use, the reversing cylinder 5 and the internal transmission parts can be removed to reduce unnecessary kinetic energy loss; the casing 1 corresponds to the input shaft 7 The positions of the two end covers 8 are slidably mounted with end covers 8, and the end covers 8 and the input shaft 7 are coaxially arranged. The inner sides of the two end covers 8 are fixedly mounted with bearings 12 that match the input shaft 7. The input shaft 7 passes through one of the two end covers 8 and extends to the inside of the casing 1. The end covers 8 are used to fix the bearings 12 on the one hand, and on the other hand, to ensure the stability of the inside of the casing 1. The end covers 8 are also provided with through holes for fixing bolts 13. The positions of the two end covers 8 can be replaced with each other, and the direction of the input shaft 7 can be changed accordingly, so that the motor installation position of the reducer can be adjusted later, further increasing the applicable scope of the reducer;

[0031] There are more bolt holes 13 on the end cover 8 than on the reversing cylinder 5. Due to the limitation of the circumscribed shaft 16, not all positions on the reversing cylinder 5 are provided with bolt holes 13. In order to adapt to the position switching of the reversing cylinder 5, the bolt holes 13 on the end cover 8 are evenly distributed in a circular array. When the reversing cylinder 5 is fixed, some of the bolt holes 13 on the end cover 8 may not have bolts 13. Since the distribution spacing of the bolt holes 13 is small, some of the bolts 13 are not installed, which will not affect the normal use of the device.

[0032] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A speed reducer with a reversible input, comprising a housing (1), a cover plate (2), an output shaft (3), a base (4), a worm wheel (9) and a worm (11) constituting the speed reducer, wherein the worm (11) is coaxially mounted with an input shaft (7), and the worm (11) and the worm wheel (9) are meshingly connected, characterized in that: A rotatable reversing cylinder (5) is sleeved on a section of the input shaft (7) located outside the casing (1), and the radial angle of the reversing cylinder (5) is fixed to the casing (1) by bolts (13); The reversing cylinder (5) is rotatably connected to an external shaft (16) that transmits power in a direction perpendicular to the input shaft (7). The external shaft (16) is used to coaxially connect with an external motor. The reversing cylinder (5) and its internal transmission parts are removable.

2. A reducer with reversible input according to claim 1, characterized in that: The input shaft (7) is located inside the reversing cylinder (5) and has a bevel gear 1 (14) on a sliding sleeve. The end of the external shaft (16) is provided with a bevel gear 2 (15). The bevel gear 2 (15) and the bevel gear 1 (14) are meshed and transmission-connected.

3. A reducer with reversible input according to claim 2, characterized in that: A protective cover (51) is provided on one side of the reversing cylinder (5), and a mounting hole (52) is provided on the protective cover (51); the circumscribed shaft (16) is located inside the mounting hole (52), and a collar (17) for stabilizing the position of the circumscribed shaft (16) is provided between the circumscribed shaft (16) and the mounting hole (52).

4. A reducer with reversible input according to claim 3, characterized in that: An outer cover (6) coaxial with the input shaft (7) is provided on the side of the reversing cylinder (5) away from the casing (1), and a through hole corresponding to the reversing cylinder (5) is provided on the outer cover (6), and a bolt (13) threadedly fixedly connected to the casing (1) is inserted into the through hole.

5. A reducer with reversible input according to claim 4, characterized in that: The housing (1) is slidably fitted with an end cover (8) at a position corresponding to the input shaft (7), and the end cover (8) and the input shaft (7) are coaxially arranged. Two bearings (12) matching the input shaft (7) are fixedly mounted on the inner sides of the two end covers (8), and the input shaft (7) passes through one of the two end covers (8) and extends into the interior of the housing (1).

6. The input reversible reducer according to claim 1, characterized in that: A bearing 1 (10) is clamped coaxially with the output shaft (3) inside the housing (1), and the inner ring of the bearing 1 (10) is clamped and fixed to the output shaft (3).

7. The input reversible reducer according to claim 1, characterized in that: The cover plate (2) and the output shaft (3) are coaxially connected with a bearing one (10), and the inner ring of the bearing one (10) and the output shaft (3) are fixedly connected by a clamp.

8. The input reversible reducer according to claim 1, characterized in that: The base (4) is fixedly connected to the bottom of the casing (1) by bolts (13).

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