High-speed gear shifting mechanism of pneumatic motor

Abstract

The utility model discloses a high-speed gear shifting mechanism of a pneumatic motor. The high-speed gear shifting mechanism comprises a gearbox body, the pneumatic motor, a gear shifting gear, a gear shifting air cylinder, a first gear set, a second gear set and a conical synchronizing device. A transmission shaft of the pneumatic motor is movably provided with a gear shifting gear, the gear shifting air cylinder drives the gear shifting gear to move, the gear shifting gear is separated from the first gear, and the gear shifting gear is in contact transmission with the second gear to conduct gear shifting work. And when the gear-shifting air cylinder cuts off air and shifts gears, the spring restorer drives the gear-shifting gear to reset. The conical synchronizing device is driven through elastic and flexible friction, so that the phenomenon that the gear shifting gear rotating at a high speed is stuck or is broken during gear shifting is prevented.

Description

Technical Field

[0001] This utility model relates to a high-speed shifting mechanism for a pneumatic motor, and pertains to the field of pneumatic device technology. Background Technology

[0002] Currently, the shifting mechanism of transmission machinery is complex in structure and easily damaged, and cannot meet the requirements of high-speed shifting of pneumatic motors. Therefore, the market urgently needs a pneumatic motor high-speed shifting device with a simple structure and stable operation. Summary of the Invention

[0003] The purpose of this utility model is to provide a pneumatic motor high-speed shifting device with a simple structure and stable operation.

[0004] In view of the above-mentioned technical problems, this utility model provides a high-speed shifting mechanism for a pneumatic motor, including...

[0005] The system comprises a gearbox housing, a pneumatic motor, shift gears, a shift cylinder, and a conical synchronizing device. The pneumatic motor is located on the left side of the gearbox housing, with its drive shaft housed inside. An output shaft is located on the right side of the gearbox housing, coaxially aligned with the drive shaft. A shift gear is movably mounted on the drive shaft, sliding axially, and has an annular groove on its side. A lever is mounted on the cylinder rod of the shift cylinder, its tip positioned within the annular groove, and a spring return mechanism is located outside the cylinder rod. The gearbox housing contains a first gear set and a second gear set. After the shift gear disengages from the first gear of the first gear set under the action of the shift cylinder, it engages with the second gear of the second gear set for transmission. The conical synchronizing device includes a first and a second conical synchronizing pulley, mounted on the drive shaft, positioned on opposite sides of the shift gear. The first conical pulley is located on the left side of the first gear, and the second conical pulley is located on the right side of the second gear. During gear shifting, the first conical synchronous pulley separates from the first conical pulley, while the second conical synchronous pulley contacts the second conical pulley to prevent gear grinding during high-speed gear shifting.

[0006] Preferably, a first spring is provided on the side of the first conical synchronous pulley, and a second spring is provided on the side of the second conical synchronous pulley. During gear shifting, after the shift gear separates from the first gear, the first conical synchronous pulley and the first conical pulley slowly separate under the action of the first spring, and the second conical synchronous pulley and the second conical pulley elastically contact each other, preventing the shift gear from stalling and grinding when it contacts the second gear.

[0007] Preferably, the output shaft and the transmission shaft are coaxially arranged, and a bushing is provided on the head of the output shaft, which is supported by a bearing to the head of the transmission shaft.

[0008] Based on the above technical solution, this utility model has at least one of the following beneficial effects:

[0009] 1. The present invention provides a high-speed shifting mechanism for a pneumatic motor, which uses a shifting cylinder for two-speed adjustment, and has a simple and compact structure.

[0010] 2. The use of a conical synchronization device for flexible friction transmission effectively solves the problems of stalling, jamming, and gear grinding that occur when the pneumatic motor shifts at high speed, thus meeting market demands. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the working process of a high-speed shifting mechanism for a pneumatic motor according to this utility model. Detailed Implementation

[0012] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0013] like Figure 1As shown, a high-speed pneumatic motor shifting mechanism includes a gearbox body 1, a pneumatic motor 2, a shift gear 5, a shift cylinder 11, and a conical synchronization device 10. The pneumatic motor 2 is located on the left side of the gearbox body 1, and its drive shaft 3 is located inside the gearbox body 1. An output shaft 4 is located on the right side of the gearbox body 1, and the output shaft 4 is coaxially aligned with the drive shaft 3. The shift gear 5 is movably mounted on the drive shaft 3, and slides axially on the drive shaft 3. An annular groove 6 is provided on the side of the shift gear 5. A lever 13 is provided on the cylinder rod 12 of the shift cylinder 11, and the top end of the lever 13 is located in the annular groove 6. A spring return device 14 is provided outside the cylinder rod 12. A first gear set 21 and a second gear set 22 are provided in the gearbox body 1. After the shift gear 5 separates from the first gear 23 of the first gear set 21 under the action of the shift cylinder 11, the shift gear 5 contacts and drives the second gear 24 of the second gear set 22. The first conical synchronizing pulley 25 and the second conical synchronizing pulley 26 of the conical synchronizing device 10 are mounted on the drive shaft 3, and are respectively positioned on both sides of the shift gear 5. A first conical pulley 27 is located on the left side of the first gear 23, and a second conical pulley 28 is located on the right side of the second gear 24. During gear shifting, the first conical synchronizing pulley 25 separates from the first conical pulley 27, while the second conical synchronizing pulley 26 contacts the second conical pulley 28 to prevent gear grinding during high-speed shifting. A first spring 30 is mounted on the side of the first conical synchronizing pulley 25, and a second spring 31 is mounted on the side of the second conical synchronizing pulley 26. During gear shifting, after the shift gear 5 separates from the first gear 23, the first conical synchronizing pulley 25 and the first conical pulley 27 slowly separate under the action of the first spring 30, while the second conical synchronizing pulley 26 and the second conical pulley 28 elastically contact each other to prevent stalling and gear grinding when the shift gear 5 contacts the second gear 24. The output shaft 4 is coaxially arranged with the transmission shaft 3. A bushing 32 is provided on the shaft head of the output shaft 4, and the bushing 32 is supported by a bearing with the shaft head of the transmission shaft 3.

[0014] This concludes the description of the embodiments of this utility model.

[0015] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A high-speed shifting mechanism for a pneumatic motor, characterized in that, include: A pneumatic motor (2) is provided on the left side of the gearbox body (1), and the transmission shaft (3) of the pneumatic motor (2) is located inside the gearbox body (1). An output shaft (4) is provided on the right side of the gearbox body (1), and the output shaft (4) is coaxially arranged with the transmission shaft (3). A shift gear (5) is movably arranged on the transmission shaft (3), and the shift gear (5) slides axially on the transmission shaft (3). An annular groove (6) is provided on the side of the shift gear (5). A lever (13) is provided on the cylinder rod (12) of the shift cylinder (11), and the top end of the lever (13) is located in the annular groove (6). A spring return device (14) is provided on the outside of the cylinder rod (12). A first gear set (21) and a second gear set (22) are provided in the gearbox body (1). The shift gear ( 5) After the shift cylinder (11) separates from the first gear (23) of the first gear set (21), the shift gear (5) contacts and drives the second gear (24) of the second gear set (22); the first conical synchronous wheel (25) and the second conical synchronous wheel (26) of the conical synchronous device (10) are set on the transmission shaft (3), and the first conical synchronous wheel (25) and the second conical synchronous wheel (26) are respectively set on both sides of the shift gear (5); the first conical wheel (27) is set on the left side of the first gear (23), and the second conical wheel (28) is set on the right side of the second gear (24); when shifting gears, the first conical synchronous wheel (25) separates from the first conical wheel (27), and the second conical synchronous wheel (26) contacts the second conical wheel (28) to prevent gear grinding during high-speed shifting.

2. The high-speed shifting mechanism for a pneumatic motor according to claim 1, characterized in that: The first conical synchronous pulley (25) is provided with a first spring (30) on its side, and the second conical synchronous pulley (26) is provided with a second spring (31) on its side. When shifting gears, after the shifting gear (5) separates from the first gear (23), the first conical synchronous pulley (25) and the first conical pulley (27) slowly separate under the action of the first spring (30), and the second conical synchronous pulley (26) and the second conical pulley (28) make elastic contact to prevent the shifting gear (5) from stalling and grinding when it contacts the second gear (24).

3. A high-speed shifting mechanism for a pneumatic motor according to claim 1 or 2, characterized in that: The output shaft (4) is coaxially arranged with the transmission shaft (3), and a bushing (32) is provided on the shaft head of the output shaft (4). The bushing (32) and the shaft head of the transmission shaft (3) are supported by a bearing.

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