CN108895133B - Power transmission speed reducing system - Google Patents
Power transmission speed reducing system Download PDFInfo
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- CN108895133B CN108895133B CN201811074814.4A CN201811074814A CN108895133B CN 108895133 B CN108895133 B CN 108895133B CN 201811074814 A CN201811074814 A CN 201811074814A CN 108895133 B CN108895133 B CN 108895133B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H35/00—Gearings or mechanisms with other special functional features
- F16H35/10—Arrangements or devices for absorbing overload or preventing damage by overload
Abstract
The invention discloses a power transmission speed reducing system which comprises a turboshaft engine, an oil radiator, a main transmission shaft, a main speed reducer, a centrifugal overspeed protection device, a single-pole planetary transmission device, a horizontal transmission shaft, a middle speed reducer, an end tooth clutch, an inclined transmission shaft and a tail speed reducer. In order to prevent the vibration caused by overhigh rotating speed when the engine drives the transmission shaft, the device adopts a scheme of combining a main reducer and a body reducer. A centrifugal overspeed protection device is arranged between the horizontal transmission shaft and the main speed reducer, so that the speed reducer is prevented from being damaged due to overlarge input rotating speed. The transmission type of the device is a planetary transmission, the transmission ratio is 5.33, the input rotating speed of the turboshaft engine is 33000r/min, and after passing through the speed reducing device, the output rotating speed of the shaft is about 6000 r/min. So that the device can be matched with other devices conveniently. The invention has simple structure principle, large transmission ratio, high efficiency, less loss and long service life, and can realize effective transmission and deceleration.
Description
Technical Field
The invention belongs to the technical field of speed reducers, and particularly relates to a power transmission speed reducing system.
Background
The reducer is an independent part consisting of gear transmission, worm transmission and gear-worm transmission enclosed in a rigid shell, and is commonly used as a speed reduction transmission device between a prime mover and a working machine. The function of matching the rotation speed and transmitting the torque between the prime mover and the working machine or the actuating mechanism is very extensive in modern machinery.
The speed reducer plays a role in matching rotating speed and transmitting torque between the prime mover and the working machine or the actuating mechanism, and is a relatively precise machine. Its purpose is to reduce the speed and increase the torque. It has various types, different models and different purposes. The speed reducers are various in types and can be divided into gear speed reducers, worm speed reducers and planetary gear speed reducers according to the transmission types; the speed reducer can be divided into a single-stage speed reducer and a multi-stage speed reducer according to different transmission stages; according to the shape of the gear, the gear can be divided into a cylindrical gear reducer, a conical gear reducer and a conical-cylindrical gear reducer; according to the arrangement form of transmission, the speed reducer can be divided into an expansion type speed reducer, a shunt type speed reducer and a coaxial type speed reducer.
Chinese patent No. CN201720136485.6 discloses a gear transmission reduction gearbox and a reduction motor using the same, wherein an input shaft and an intermediate shaft I realize primary reduction transmission through a bevel gear transmission pair; the middle shaft I and the middle shaft II realize two-stage speed reduction transmission through a spiral bevel gear transmission pair; the middle II shaft and the output shaft realize three-stage speed reduction transmission through a bevel gear transmission pair; the advantages are that: the gear meshing precision is high, the safety is good, and the service life is long; but the transmission of energy is lower in the working process, and the working efficiency is not high.
Disclosure of Invention
The technical problem to be solved is as follows:
in order to avoid the defects of the prior art, the invention provides a power transmission speed reducing system which utilizes three-level speed change and aims to fundamentally solve the problems of low energy transmission ratio and low working efficiency. Meanwhile, the centrifugal overspeed protection device is used, so that the speed reduction device can be damaged due to overlarge input rotating speed. The system has the advantages of simple processing technology, convenient operation, low cost, short flow, high efficiency, convenience and the like, and is easy for large-scale industrial application.
The technical scheme of the invention is as follows: a power transmission reduction system characterized by: the turboshaft engine is sequentially connected with a lubricating oil radiator, a main transmission shaft, a main speed reducer, a centrifugal overspeed protection device, a single-pole planetary transmission device, a horizontal transmission shaft, an intermediate speed reducer, an end tooth clutch, an inclined transmission shaft and a tail speed reducer;
the centrifugal overspeed protection device comprises a central shaft, a movable rod, a movable shaft, a connecting rod, a fixed shaft and a centrifugal ball; the fixed shaft is arranged at one end of the central shaft connected with the main speed reducer, the movable shaft is arranged at the other end of the central shaft and keeps clearance fit, and the movable shaft is of a tubular structure and is sleeved on the central shaft; the centrifugal ball is hinged with the movable shaft and the fixed shaft through the two movable rods respectively, and when the centrifugal ball moves along the radial direction of the central shaft, the movable shaft is driven to move along the axial direction of the central shaft through the movable rods; one end of the connecting rod is fixed on the movable shaft, and the other end of the connecting rod is fixed on the single-pole planetary transmission device, so that the central shaft and the axial position of the single-pole planetary transmission device are parallel; the weight of the centrifugal ball is 0.8-1.1 kg;
the single-pole planetary transmission device comprises a sun gear, a planetary gear, an inner gear and a planetary frame; the connecting rod is connected with a planetary frame of the single-pole planetary transmission device, the centrifugal ball moves outwards along the radial direction of the central shaft, the movable shaft is driven by the movable rod to move towards the main speed reduction direction, and the planetary frame is further driven by the connecting rod to move and separate from the planetary gear, so that the transmission is stopped; the centrifugal ball 20 moves inward along the radial direction of the central shaft, so that the connecting rod drives the planetary carrier to move and is combined with the planetary gear to realize transmission starting.
The further technical scheme of the invention is as follows: the centrifugal ball is a solid structure with a groove along the circumferential direction, and one end of each movable rod is hinged and fixed in the groove, so that the movable rods can rotate along the circumferential direction of the centrifugal ball.
The further technical scheme of the invention is as follows: the movable rod is hinged with the movable shaft 17 and the fixed shaft 19.
The further technical scheme of the invention is as follows: the connecting rod is of an L-shaped structure, one end of the connecting rod, which is fixed with the movable shaft, is perpendicular to the axial direction of the central shaft, and one end of the connecting rod, which is connected with the planet carrier, is parallel to the axial direction of the central shaft.
Effects of the invention
The invention has the technical effects that:
(1) the invention has simple structure principle and can realize effective transmission and speed reduction of the rotating speed.
(2) The three-stage transmission speed reducing system adopted by the invention has high working efficiency, is not easy to deform and damage and has long service life.
(3) The scheme of combined use of the main speed reducer, the middle speed reducer and the tail speed reducer effectively solves the problem of transmission shaft vibration caused by overhigh rotating speed, improves the safety and effectively reduces noise.
(4) Adopt centrifugal overspeed protection device, centrifugal ball chooses for use weight to be 0.8 ~ 1.1kg, and when the main reducer rotational speed exceeded 6188r/min, when reaching the main reducer critical speed promptly, centrifugal ball along the radial outward movement of axle, through the pole drives loose axle 17 orientation 3 direction movements of main reducer make the connecting rod remove and drive the separation of planetary frame and planetary gear to terminate whole transmission process, prevent that the decelerator from leading to the damage because of the input rotational speed is too big.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of an outboard retarder;
FIG. 3 is a schematic view of a single-pole pinion gear;
FIG. 4 is a centrifugal overspeed protection device;
description of reference numerals: 1. the centrifugal overspeed protection device comprises a turboshaft engine, 2 parts of a main transmission shaft, 3 parts of a main reducer, 4 parts of a horizontal transmission shaft, 5 parts of an intermediate reducer, 6 parts of an end tooth clutch, 7 parts of an oblique transmission shaft, 8 parts of a tail reducer, 9 parts of a lubricating oil radiator, 10 parts of a transmission shaft, 11 parts of a reducer, 12 parts of a sun gear, 13 parts of a planetary gear, 14 parts of an internal gear, 15 parts of a planetary frame, 16 parts of a movable rod, 17 parts of a movable shaft 18 parts of a connecting rod, 19 parts of a fixed shaft, 20 parts of a centrifugal ball and 21 parts of a centrifugal overspeed protection device.
Detailed Description
The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
Referring to fig. 1-3, the present invention provides a power transmission speed reduction system, which includes a turboshaft engine 1, an oil radiator 9, a main transmission shaft 2, a main speed reducer 3, a centrifugal overspeed protection device, a single-pole planetary transmission device, a horizontal transmission shaft 4, an intermediate speed reducer 5, an end-tooth clutch 6, an oblique transmission shaft 7, and a tail speed reducer 8. The transmission speed reducer firstly utilizes a turboshaft engine 1 to directly drive a main transmission shaft 2 to rotate, and the rotating speed completes the first speed change at a main speed reducer 3; install lubricating oil radiator 9 between turboshaft engine 1 and final drive shaft 2, because turboshaft engine 1 input speed is great, the friction heat that brings is big, leads to between turboshaft engine 1 and the final drive shaft 2 high temperature, and lubricating oil radiator 9 can reduce the friction of transmission shaft, reduces the friction heat, also has fine radiating effect simultaneously, can show hoisting device's life.
The transmission belongs to a high-speed gear transmission, and the transmission ratio is small and is about 5.33. The output speed is 6188r/min after the output of the speed reduction transmission of the main reducer 3 is obtained by inputting the PT6B-34 type turboshaft engine, wherein the input speed is 33000 r/min. The rotational speed is then input to the intermediate speed reducer via the horizontal drive shaft 4 to complete the second step of speed change. The second-stage speed reducer generally selects a speed reducer with larger transmission ratio according to conditions to carry out middle-stage speed reduction, then the rotating speed is output through an end tooth clutch and input into a tail speed reducer through an inclined transmission shaft to complete the last step of speed change. The transmission ratio of the last two stages is larger. While the multi-stage transmission has a certain adverse effect on the transmission efficiency, the transmission efficiency can be maintained at a high level by using the lubricating oil radiator 9 for lubrication and heat dissipation. When the transmission speed is too high, parts are seriously damaged, and a centrifugal overspeed protection device 21 is arranged between the horizontal transmission shaft 4 and the main speed reducer 3.
The centrifugal overspeed protection device 21 comprises a central shaft, a movable rod 16, a movable shaft 17, a connecting rod 18, a fixed shaft 19 and a centrifugal ball 20; a fixed shaft 19 is arranged at one end of the central shaft connected with the main speed reducer 3, a movable shaft 17 is arranged at the other end of the central shaft and keeps clearance fit, and the movable shaft 17 is in a tubular structure and is sleeved on the central shaft; the centrifugal ball 20 is hinged with the movable shaft 17 and the fixed shaft 19 through two movable rods 16, and when the centrifugal ball 20 moves along the radial direction of the central shaft, the movable shaft 17 is driven to move along the axial direction of the central shaft through the movable rods 16; one end of a connecting rod 18 is fixed on the movable shaft 17, the other end of the connecting rod is fixed on the monopole planetary transmission device, the connecting rod is of an L-shaped structure, one end of the connecting rod, which is fixed on the movable shaft, is perpendicular to the axial direction of the central shaft, and one end of the connecting rod, which is connected with the planetary frame, is parallel to the axial direction of the central shaft. Causing the axial positions of the central shaft and the single pole pinion drive to be parallel; the centrifugal ball 20 is a solid structure with a groove along the circumferential direction, the weight is 0.8-1.1 kg, and one ends of the two movable rods 16 are hinged with each other and fixed in the groove, so that the movable rods 16 can rotate along the circumferential direction of the centrifugal ball 20.
The single-pole planetary transmission device comprises a sun gear 12, a planetary gear 13, an inner gear 14 and a planetary frame 15; the connecting rod 18 is connected to the planet carrier 15 of the single-pole pinion drive. When the rotating speed of the main speed reducer 3 exceeds the rated 6188r/min, the centrifugal overspeed protection device 21 directly connected with the main speed reducer 3 reaches the same rotating speed, and under the action of centrifugal force, the centrifugal ball 20 moves outwards along the radial direction of the central shaft, the movable shaft 17 is driven by the movable rod 16 to move towards the main speed reducer 3, the planet carrier 15 is further driven by the connecting rod 18 to move and separate from the planet gear 13, the whole transmission process is terminated, and the protection device is safe.
When the centrifugal ball 20 moves radially inward along the central shaft, the connecting rod 18 drives the planetary carrier 15 to move and combine with the planetary gear 13, and the transmission is started.
The working principle is as follows: the turboshaft engine 1 directly drives the main transmission shaft 2 to rotate, and firstly, the speed is reduced through the main speed reducer 3. After the speed reduction is finished, the rotating speed is transmitted to the intermediate speed reducer 5 through the horizontal driver 4 for secondary speed reduction, and then the speed is input to the last tail speed reducer 8 through the end tooth clutch 6 and the inclined transmission shaft 7, so that the whole transmission and speed reduction process is finished.
In conclusion, the transmission device has the advantages of simple structure principle, capability of realizing high-efficiency transmission and effective speed reduction, and long service life.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art without departing from the principle and spirit of the present invention.
Claims (4)
1. A power transmission reduction system characterized by: the turboshaft engine is sequentially connected with a lubricating oil radiator, a main transmission shaft, a main speed reducer, a centrifugal overspeed protection device, a single-pole planetary transmission device, a horizontal transmission shaft, an intermediate speed reducer, an end tooth clutch, an inclined transmission shaft and a tail speed reducer;
the centrifugal overspeed protection device comprises a central shaft, a movable rod, a movable shaft, a connecting rod, a fixed shaft and a centrifugal ball; the fixed shaft is arranged at one end of the central shaft connected with the main speed reducer, the movable shaft is arranged at the other end of the central shaft and keeps clearance fit, and the movable shaft is of a tubular structure and is sleeved on the central shaft; the centrifugal ball is hinged with the movable shaft and the fixed shaft through the two movable rods respectively, and when the centrifugal ball moves along the radial direction of the central shaft, the movable shaft is driven to move along the axial direction of the central shaft through the movable rods; one end of the connecting rod is fixed on the movable shaft, and the other end of the connecting rod is fixed on the single-pole planetary transmission device, so that the central shaft and the axial position of the single-pole planetary transmission device are parallel; the weight of the centrifugal ball is 0.8-1.1 kg;
the single-pole planetary transmission device comprises a sun gear, a planetary gear, an inner gear and a planetary frame; the connecting rod is connected with a planetary frame of the single-pole planetary transmission device, the centrifugal ball moves outwards along the radial direction of the central shaft, the movable shaft is driven by the movable rod to move towards the direction of the main speed reducer, and the planetary frame is further driven by the connecting rod to move and separate from the planetary gear, so that the transmission is stopped; the centrifugal ball moves inwards along the radial direction of the central shaft, so that the connecting rod drives the planetary frame to move and is combined with the planetary gear to realize transmission starting.
2. The driveline deceleration system of claim 1, wherein: the centrifugal ball is a solid structure with a groove along the circumferential direction, and one end of each movable rod is hinged and fixed in the groove, so that the movable rods can rotate along the circumferential direction of the centrifugal ball.
3. The driveline deceleration system of claim 1, wherein: the movable rod is hinged with the movable shaft and the fixed shaft.
4. The driveline deceleration system of claim 1, wherein: the connecting rod is of an L-shaped structure, one end of the connecting rod, which is fixed with the movable shaft, is perpendicular to the axial direction of the central shaft, and one end of the connecting rod, which is connected with the planet carrier, is parallel to the axial direction of the central shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811074814.4A CN108895133B (en) | 2018-09-14 | 2018-09-14 | Power transmission speed reducing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811074814.4A CN108895133B (en) | 2018-09-14 | 2018-09-14 | Power transmission speed reducing system |
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| Publication Number | Publication Date |
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| CN108895133A CN108895133A (en) | 2018-11-27 |
| CN108895133B true CN108895133B (en) | 2021-03-09 |
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| CN201811074814.4A Active CN108895133B (en) | 2018-09-14 | 2018-09-14 | Power transmission speed reducing system |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08178013A (en) * | 1994-12-22 | 1996-07-12 | Chuo Giken Kogyo:Kk | Drive transmission device for rotary shaft |
| CN101225857A (en) * | 2008-02-01 | 2008-07-23 | 李绍卿 | Centrifugal type friction coupling device |
| CN202228623U (en) * | 2011-06-03 | 2012-05-23 | 梁开峰 | Transmission shaft with overload automatic protection device |
| JP2014119047A (en) * | 2012-12-18 | 2014-06-30 | Honda Motor Co Ltd | Torque limiter |
| CN104100690A (en) * | 2013-04-12 | 2014-10-15 | 斯泰必鲁斯有限公司 | Drive device with overload protection |
| CN206072155U (en) * | 2016-09-30 | 2017-04-05 | 长城汽车股份有限公司 | Overload protection arrangement, power transmission shaft and vehicle |
| CN107171490A (en) * | 2017-05-31 | 2017-09-15 | 衢州学院 | A kind of rotation speed control device |
-
2018
- 2018-09-14 CN CN201811074814.4A patent/CN108895133B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08178013A (en) * | 1994-12-22 | 1996-07-12 | Chuo Giken Kogyo:Kk | Drive transmission device for rotary shaft |
| CN101225857A (en) * | 2008-02-01 | 2008-07-23 | 李绍卿 | Centrifugal type friction coupling device |
| CN202228623U (en) * | 2011-06-03 | 2012-05-23 | 梁开峰 | Transmission shaft with overload automatic protection device |
| JP2014119047A (en) * | 2012-12-18 | 2014-06-30 | Honda Motor Co Ltd | Torque limiter |
| CN104100690A (en) * | 2013-04-12 | 2014-10-15 | 斯泰必鲁斯有限公司 | Drive device with overload protection |
| CN206072155U (en) * | 2016-09-30 | 2017-04-05 | 长城汽车股份有限公司 | Overload protection arrangement, power transmission shaft and vehicle |
| CN107171490A (en) * | 2017-05-31 | 2017-09-15 | 衢州学院 | A kind of rotation speed control device |
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| CN108895133A (en) | 2018-11-27 |
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