Speed reducer

Abstract

The utility model relates to the technical field of motor transmission, and particularly discloses a speed reducer which comprises a planetary mechanism and a transmission case, the planetary mechanism is connected with the transmission case, and at least one output shaft is arranged on the transmission case.

Description

Technical Field

[0001] The utility model relates to the technical field of motor drive, in particular to a speed reducer. Background Art

[0002] The reliable service life and reasonable maintenance method of the speed reducer directly affect its use convenience. During use, problems such as poor dust prevention and lubricant leakage affect the use convenience. Summary of the Utility Model

[0003] To solve the above technical problems, the present application provides a speed reducer, which includes a planetary mechanism and a transmission case. The planetary mechanism is connected to the transmission case, and at least one output shaft is provided on the transmission case.

[0004] In an embodiment of the present application, the transmission case is a closed structure.

[0005] In an embodiment of the present application, the planetary mechanism includes multiple levels of planetary devices.

[0006] In an embodiment of the present application, a plurality of gears are provided in the transmission case, and the plurality of gears are meshed with each other.

[0007] In an embodiment of the present application, among the plurality of gears in the transmission case, there is a first output gear, and the first output gear is coaxially arranged with the sun gear of the planetary mechanism.

[0008] In an embodiment of the present application, at least one output shaft is provided on the transmission case, and the at least one output shaft is coaxially arranged with any one of the gears in the transmission case.

[0009] In an embodiment of the present application, the transmission case includes a worm and worm gear mechanism and a bevel gear pair. The bevel gear pair includes a first bevel gear and a second bevel gear. The first bevel gear is coaxially arranged with the sun gear of the planetary mechanism, the second bevel gear is meshed with the first bevel gear, and the second bevel gear is coaxially arranged with the worm.

[0010] In an embodiment of the present application, a plurality of worm gears are provided on the worm, and at least one of the plurality of worm gears is connected to the output shaft.

[0011] In an embodiment of the present application, left-handed threads and right-handed threads are provided on the worm.

[0012] In an embodiment of the present application, a plurality of output shafts are provided on the transmission case, and the rotation directions of the plurality of output shafts are different. Description of the Drawings

[0013] Figure 1It is a schematic structural diagram of an embodiment of the present utility model;

[0014] Figure 2 It is a schematic structural diagram of an embodiment of the present utility model;

[0015] Figure 3 It is a schematic structural diagram of an embodiment of the present utility model;

[0016] Figure 4 It is a schematic diagram of the internal transmission structure of an embodiment of the present utility model;

[0017] Figure 5 It is a schematic diagram of the internal transmission structure of an embodiment of the present utility model;

[0018] Figure 6 It is a schematic structural diagram of an embodiment of the worm and worm gear of the present utility model;

[0019] Figure 7 It is a schematic structural diagram of an embodiment of the worm and worm gear of the present utility model.

[0020] In the figure:

[0021] 1. Planetary mechanism; 11. Planetary device; 2. Transmission box; 21. First output gear; 22. Gear; 23. Output shaft; 24. Bevel gear pair; 241. First bevel gear; 242. Second bevel gear; 25. Worm; 26. Worm wheel. Specific embodiments

[0022] To make the technical problems solved by the present utility model, the technical solutions adopted and the achieved technical effects clearer, the technical solutions of the embodiments of the present utility model will be further described in detail below with reference to the drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present utility model.

[0023] Embodiment 1

[0024] A speed reducer includes a planetary mechanism 1 and a transmission box 2. The planetary mechanism 1 is connected to the transmission box 2, and at least one output shaft 23 is provided on the transmission box 2.

[0025] The transmission box 2 is a closed structure. In this application, the transmission box is set as a closed structure. During use, the closed structure can well prevent dust, and lubricants and the like inside the closed structure are not likely to flow out.

[0026] The planetary mechanism 1 includes multiple levels of planetary devices 11, and the number of levels of the planetary mechanism 1 can be appropriately set according to the requirements for the reduction ratio. A plurality of gears 22 are provided in the transmission case, and the plurality of gears 22 are meshed with each other. Among the plurality of mutually meshed gears, the rotation directions of adjacent gears are opposite. If the 1st, 3rd, and 5th gears are forward rotation gears, then the 2nd, 4th, and 6th gears are reverse rotation gears.

[0027] Among the plurality of gears 22 in the transmission case, it includes a first output gear 21, and the first output gear 21 is coaxially arranged with the sun gear of the planetary mechanism. The first output gear 21 transmits the power transmitted by the motor through the planetary mechanism 1 to other gears 22 in the transmission case 2.

[0028] At least one output shaft 23 is provided on the transmission case 2, and the at least one output shaft 23 is coaxially arranged with any one of the gears 22 in the transmission case 2. It can be understood that the output shaft 23 can be coaxially arranged with the first output gear, or can be coaxially arranged with any one of the gears 22 in the transmission case 2.

[0029] Two output shafts are provided on the transmission case 2. One output shaft is arranged on the odd-numbered gear, and the other output shaft is arranged on the even-numbered gear. In this way, the rotation directions of the two output shafts are opposite. When this speed reducer is applied to the jacking device, the relative movement of the two rotating shafts can cancel the lateral force, making the jacking more stable.

[0030] Embodiment 2

[0031] A speed reducer includes a planetary mechanism 1 and a transmission case 2. The planetary mechanism 1 is connected to the transmission case 2, and at least one output shaft 23 is provided on the transmission case 2. The transmission case 2 is a closed structure.

[0032] The transmission case includes a worm and worm gear mechanism and a bevel gear pair 24. The bevel gear pair 24 includes a first bevel gear 241 and a second bevel gear 242. The first bevel gear 241 is coaxially arranged with the sun gear of the planetary mechanism 1. The second bevel gear 242 is meshed with the first bevel gear 241, and the second bevel gear 242 is coaxially arranged with the worm 25.

[0033] The worm 25 is provided with left-handed threads and right-handed threads.

[0034] A plurality of worm wheels 26 are provided on the worm 25, and at least one of the plurality of worm wheels is connected to the output shaft 23. A plurality of output shafts 23 are provided on the transmission case, and the rotation directions of the plurality of output shafts 23 are different. The plurality of output shafts 23 respectively correspond to the threads with different rotation directions on the worm 25.

[0035] In one embodiment, the worm 25 is provided with two output shafts 23. One output shaft 23 corresponds to a worm wheel engaged with a left-handed thread, and the other output shaft corresponds to a worm wheel engaged with a right-handed thread.

[0036] Obviously, the above embodiments of the present invention are merely examples for clearly explaining the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation manners here. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A reducer, characterized in that: It includes a planetary mechanism and a transmission box, the planetary mechanism is connected to the transmission box, at least one output shaft is arranged on the transmission box, the transmission box includes a worm gear mechanism and a bevel gear pair, the bevel gear pair includes a first bevel gear and a second bevel gear, the first bevel gear is coaxially arranged with the sun gear of the planetary mechanism, the second bevel gear is meshed with the first bevel gear, and the second bevel gear is coaxial with the worm.

2. A reducer according to claim 1, characterized in that: The worm is provided with a plurality of worm gears, and at least one of the plurality of worm gears is connected to the output shaft.

3. A reducer according to claim 1, characterized in that: The worm is provided with a left-hand thread and a right-hand thread.

4. A reducer according to any one of claims 1 to 3, characterized in that: The transmission box is provided with a plurality of output shafts, and the rotation directions of the plurality of output shafts are different.

Images