Pneumatic transmission

Abstract

The present invention provides a pneumatic transmission, comprising a housing, an output shaft, a planetary support, a planetary gear set, a sun gear, a first inner gear ring, a second inner gear ring, a positioning ring and an annular cylinder. The output shaft, the planetary support, the first inner gear ring, the planetary gear set and the sun gear form a reduction mechanism, and the annular cylinder, the positioning ring and the second inner gear ring form a pneumatic shift mechanism. When the pneumatic shift mechanism works, the annular piston of the annular cylinder moves upward, the left synchronous gear on the annular piston meshes with the right synchronous gear of the second inner gear ring, the sun gear drives the planetary support, the second inner gear ring and the first inner gear ring to rotate through the planetary gear set, and the speed of the input shaft of the output shaft is equal to the speed of the output shaft; the annular piston moves downward, the planetary support is stationary, and the planetary reduction mechanism performs a large speed ratio reduction operation.

Description

Technical Field

[0001] The invention discloses a pneumatic transmission, and relates to the technical field of transmission speed change. Background Art

[0002] There are many types of transmissions in the current market, which are widely used in the field of transmission and speed change technology, but the transmissions with variable speed and shift positions have defects such as complex structure, large size and high cost. The market urgently needs a pneumatic transmission with a simple structure, light weight, fast shifting, and a large reduction ratio for single-gear operation. Summary of the invention

[0003] The object of the present invention is to provide a pneumatic transmission with a simple structure, light weight, fast gear shifting and a large reduction ratio.

[0004] In view of the above technical problems, the present invention provides a pneumatic transmission, including a housing, an output shaft disc, a first inner gear ring, a second inner gear ring, a planetary support, a positioning ring and an annular cylinder. The front end of the housing of the housing is provided with a first bearing seat and a second bearing seat, and the rear end of the second bearing seat is provided with a third bearing seat. The rear end of the housing is provided with a rear bearing seat, and the shaft body of the input shaft and the bearing support are arranged in the rear bearing seat. The shaft body of the output shaft of the output shaft disc is supported by the bearing support arranged in the first bearing seat, and the disc body of the output shaft disc is supported by the bearing support arranged in the second bearing seat, and the disc body is provided with a first inner gear ring. The outer ring body of the second inner gear ring is arranged in the third bearing seat, and the right side surface of the outer ring body is provided with a right synchronous gear. The front end of the planetary support is provided with a rotating shaft, and the rotating shaft is arranged in the inner bearing seat of the output shaft disc. The rear end of the planetary support is provided with a stop gear, and three planetary gear sets are arranged on the planetary support, and the first planetary gear and the second planetary gear are arranged on the planetary gear set. The first planetary gear is meshed with the first inner gear ring, and the second planetary gear is meshed with the second inner gear ring. A sun gear is arranged on the shaft head of the input shaft, and the sun gear meshes with the second planetary gear. A positioning ring is arranged at the rear end of the housing, outside the rear bearing seat, and a positioning gear is arranged on the ring body of the positioning ring; the cylinder sleeve of the annular cylinder is arranged on the inner wall of the housing, and an upper sealing sleeve is arranged on the upper end of the cylinder sleeve, and a lower sealing sleeve is arranged on the lower end of the cylinder sleeve. The annular piston of the annular cylinder is arranged in the cylinder sleeve, and the outer upper wall surface of the annular piston is in contact and sealed with the upper sealing sleeve, and the outer lower wall surface of the annular piston is in contact and sealed with the lower sealing sleeve; the piston body of the annular piston is in contact and sealed with the inner wall of the cylinder sleeve. A stop gear ring and a positioning gear ring are arranged inside the annular piston, and the positioning gear is arranged inside the positioning gear ring. When the annular piston moves, the positioning gear moves linearly in the positioning gear ring. The outer wall of the annular piston is provided with a left synchronous gear. When air is taken in from the lower air port of the annular cylinder, the annular piston moves upward, and the left synchronous gear on the annular piston meshes with the right synchronous gear of the second inner gear ring. The input shaft rotates, and the sun gear drives the planetary support, the second inner gear ring and the first inner gear ring to rotate through the planetary gear set. The speed of the input shaft is equal to the speed of the output shaft. When air is taken in from the upper air port of the annular cylinder, the annular piston moves downward, and the left synchronous gear on the annular piston separates from the right synchronous gear of the second inner gear ring. The stop gear at the rear end of the planetary support enters the stop gear ring of the annular piston. When the input shaft rotates, the planetary support is stationary, and the sun gear, the planetary gear set, the second inner gear ring and the first inner gear ring form a planetary reduction mechanism to perform reduction work.

[0005] Beneficial Effects

[0006] Based on the above technical solution, the present invention has at least one of the following beneficial effects:

[0007] 1. The pneumatic transmission achieves speed change through the displacement of the cylinder, with a simple and practical structure, light weight and low production cost;

[0008] 2. The pneumatic transmission uses a planetary reducer to shift gears and reduce speed, achieving a large speed ratio in the first gear. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the installation of the pneumatic transmission of the present invention.

[0010] Figure 2 It is a schematic diagram of the installation of the pneumatic transmission of the present invention. DETAILED DESCRIPTION

[0011] In order to make the purpose, technical solutions and advantages of the invention more clearly understood, the present invention is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0012] like Figure 1 As shown, a pneumatic transmission includes a housing 101, an output shaft disc 201, a first inner gear ring 206, a second inner gear ring 210, a planetary support 301, a planetary gear set 304, a positioning ring 501 and an annular cylinder 401. A first bearing seat 103 and a second bearing seat 104 are arranged at the front end of the housing 102 of the housing 101, and a third bearing seat 109 is arranged at the rear end of the second bearing seat 104. A rear bearing seat 105 is arranged at the rear end of the housing 102, and a shaft body 107 of an input shaft 106 is supported by a bearing arranged in the rear bearing seat 105. The shaft body 203 of the output shaft 202 of the output shaft disc 201 is supported by a bearing arranged in the first bearing seat 103, and the disc body 205 of the output shaft disc 201 is supported by a bearing arranged in the second bearing seat 104; a first inner gear ring 206 is arranged on the disc body 205. The outer ring body 211 of the second inner gear ring 210 is arranged in the third bearing seat 109, and the right synchronous gear 212 is arranged on the right side surface of the outer ring body 211. The front end of the planetary support 301 is provided with a rotating shaft 302, and the rotating shaft 302 is arranged in the inner bearing seat 303 of the output shaft disc 204. The rear end of the planetary support 301 is provided with a stop gear 320, and three planetary gear sets 304 are arranged on the planetary support 301. The planetary gear set 304 is provided with a first planetary gear 305 and a second planetary gear 306. The first planetary gear 305 is meshed with the first inner gear ring 206, and the second planetary gear 306 is meshed with the second inner gear ring 210. A sun gear 308 is provided on the shaft head 307 of the input shaft 106, and the sun gear 308 is meshed with the second planetary gear 306. The positioning ring 501 is arranged at the rear end of the housing 102 and outside the rear bearing seat 105. A positioning gear 503 is arranged on the ring body 502 of the positioning ring 501. Figure 1 , Figure 2As shown, the cylinder sleeve 402 of the annular cylinder 401 is arranged on the inner wall of the housing 101, and the upper end of the cylinder sleeve 402 is provided with an upper sealing sleeve 405, and the lower end of the cylinder sleeve 402 is provided with a lower sealing sleeve 404. The annular piston 406 of the annular cylinder 401 is arranged in the cylinder sleeve 402. The outer upper wall surface 407 of the annular piston 406 is in contact and sealed with the upper sealing sleeve 405, and the outer lower wall surface 408 of the annular piston 406 is in contact and sealed with the lower sealing sleeve 404. The piston body 409 of the annular piston 406 is in contact and sealed with the inner wall of the cylinder sleeve 402. The inside of the annular piston 406 is provided with a stop gear ring 410 and a positioning gear ring 420, and the positioning gear 503 is arranged inside the positioning gear ring 420; when the annular piston 406 moves, the positioning gear 503 moves linearly in the positioning gear ring, and the left synchronous gear 430 is provided on the outer wall surface 410 of the annular piston 406. Air enters the lower air port of the annular cylinder 301, and the annular piston 406 moves upward. The left synchronous gear 430 on the annular piston 406 meshes with the right synchronous gear 212 of the second inner gear ring 210. The input shaft 106 rotates, and the sun gear 308 drives the planetary carrier 301, the second inner gear ring 210 and the first inner gear ring 206 to rotate through the planetary gear set 304. The speed of the input shaft 106 is equal to the speed of the output shaft 202. Air enters the upper air port of the annular cylinder 301, and the annular piston 406 moves downward. The left synchronous gear 430 on the annular piston 406 is separated from the right synchronous gear 212 of the second inner gear ring 210, and the stop gear 320 at the rear end of the planetary carrier 301 enters the stop gear ring 410 of the annular piston 406. The input shaft 106 rotates, the planetary carrier 301 is stationary, and the sun gear 308, the planetary gear set 304, the second inner ring gear 210 and the first inner ring gear 206 form a planetary reduction mechanism to perform a reduction operation.

[0013] So far, the embodiments of the present invention have been introduced.

[0014] The specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pneumatic transmission, It is characterized in that include: A casing (101), wherein a first bearing seat (103) and a second bearing seat (104) are disposed at the front end of the casing (102), and a third bearing seat (109) is disposed at the rear end of the second bearing seat (104); a rear bearing seat (105) is disposed at the rear end of the casing (102), and a shaft body (107) of an input shaft (106) is supported by a bearing disposed in the rear bearing seat (105); An output shaft disc (201), wherein the shaft body (203) of the output shaft (202) is supported by a bearing and arranged in a first bearing seat (103); a disc body (205) of the output shaft disc (201) is supported by a bearing and arranged in a second bearing seat (104); a first inner gear ring (206) is arranged on the disc body (205); A second inner gear ring (210), whose outer ring body (211) is arranged in the third bearing seat (109), and a right synchronous gear (212) is arranged on the right side surface of the outer ring body (211); A planetary support (301) is provided with a rotating shaft (302) at its front end, and the rotating shaft (302) is arranged in an inner bearing seat (303) of an output shaft disc (201); a stop gear (320) is provided at the rear end of the planetary support (301); three planetary gear sets (304) are provided on the planetary support (301), and a first planetary gear (305) and a second planetary gear (306) are provided on the planetary gear set (304); the first planetary gear (305) meshes with a first inner gear ring (206), and the second planetary gear (306) meshes with a second inner gear ring (210); a sun gear (308) is provided on the shaft head (307) of the input shaft (106), and the sun gear (308) meshes with the second planetary gear (306); A positioning ring (501) is arranged at the rear end of the housing (102) and outside the rear bearing seat (105); a positioning gear (503) is arranged on the ring body (502) of the positioning ring (501); An annular cylinder (401) has a cylinder sleeve (402) disposed on the inner wall of a housing (101); an upper sealing sleeve (405) is disposed at the upper end of the cylinder sleeve (402); and a lower sealing sleeve (404) is disposed at the lower end of the cylinder sleeve (402); an annular piston (406) of the annular cylinder (401) is disposed in the cylinder sleeve (402); an outer upper wall surface (407) of the annular piston (406) is in contact and seal with the upper sealing sleeve (405); and an outer lower wall surface (408) of the annular piston (406) is in contact and seal with the lower sealing sleeve (404); a piston body ( 409) is in contact and sealed with the inner wall of the cylinder sleeve (402); a stop gear ring (410) and a positioning gear ring (420) are arranged inside the annular piston (406); the positioning gear (503) is arranged inside the positioning gear ring (420); when the annular piston (406) moves, the positioning gear (503) moves linearly in the positioning gear ring; a left synchronous gear (430) is arranged on the outer wall surface of the annular piston (406); air is taken in from the lower air port of the annular cylinder (401), the annular piston (406) moves upward, and the left synchronous gear (430) on the annular piston (406) meshes with the right synchronous gear (212) of the second inner gear ring (210); The input shaft (106) rotates, and the sun gear (308) drives the planetary support (301), the second inner gear ring (210) and the first inner gear ring (206) to rotate through the planetary gear set (304). The rotation speed of the input shaft (106) is equal to the rotation speed of the output shaft (202). The upper air port of the annular cylinder (401) takes in air, and the annular piston (406) moves downward. The left synchronous gear (430) on the annular piston (406) separates from the right synchronous gear (212) of the second inner gear ring (210), and the stop gear (320) at the rear end of the planetary support (301) enters the stop gear ring (410) of the annular piston (406). The input shaft (106) rotates, and the planetary support (301) remains stationary. The sun gear (308), the planetary gear set (304), the second inner gear ring (210) and the first inner gear ring (206) form a planetary reduction mechanism to perform a reduction operation.

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