阅读说明：本技术 一种光热工程定日镜驱动减速机 (Photo-thermal engineering heliostat driving speed reducer ) 是由 刘思厚 黄怀斌 于 2019-12-16 设计创作，主要内容包括：一种光热工程定日镜驱动减速机,包括高速级输入行星减速机、中间法兰盘、刚性盘、两件呈180°分布的摆线轮和输出轴,两个摆线轮设置于刚性盘和输出轴间,且刚性盘与输出轴连接,行星减速机的输出轴上安装有输入齿轮,输入齿轮穿过中间法兰盘且与一组行星齿轮啮合,一组行星齿轮包括相同的三件行星齿轮,三件行星齿轮呈周向均布,本发明的高速级采用可靠的功率分流方式,将传统中心传动改变为周边传动,改变和优化了原传动方式的最薄弱点、输出部分采用差动齿轮减速机构、摆线齿形、一齿差传动,应用在光热行业时,可实现更大的传动比,更小的输出功率。(A driving speed reducer of a heliostat in photo-thermal engineering comprises a high-speed input planetary speed reducer, a middle flange plate, a rigid plate, two cycloidal gears and an output shaft, wherein the two cycloidal gears are distributed at an angle of 180 degrees and are arranged between the rigid plate and the output shaft, the high-speed stage of the invention adopts a reliable power splitting mode, changes the traditional central transmission into peripheral transmission, changes and optimizes the weakest point of the original transmission mode, adopts a differential gear speed reducing mechanism, a cycloid tooth profile and one-tooth difference transmission at the output part, and can realize larger transmission ratio and smaller output power when being applied to the photo-thermal industry.)

1. A driving speed reducer of a heliostat in photo-thermal engineering is characterized by comprising a high-speed input planetary speed reducer (1), a middle flange plate (10), a rigid plate (12), two cycloidal gears (16) and an output shaft (6) which are distributed in an angle of 180 degrees, wherein the two cycloidal gears (16) are arranged between the rigid plate (12) and the output shaft (6), the rigid plate (12) is connected with the output shaft (6), an input gear (11) is arranged on the output shaft of the planetary speed reducer (1), the input gear (11) penetrates through the middle flange plate (10) and is meshed with a group of planetary gears (2), the group of planetary gears (2) comprise three same planetary gears (2), the three planetary gears (2) are uniformly distributed in the circumferential direction, the centers of the planetary gears (2) are involute internal splines, and a crank shaft (3) is respectively arranged at the centers of the three planetary gears (2), the crank shaft (3) comprises concentric journals, eccentric journals and concentric journals which are sequentially connected, the crank shaft (3) is inserted into mounting holes of a rigid disc (12), two cycloidal gears (16) and an output shaft (6), tapered roller bearings (9) are respectively arranged on the two concentric journals on the crank shaft (3) and are respectively connected with the rigid disc (12) and the output shaft (6) through the tapered roller bearings (9), needle bearings (8) without inner and outer rings and with retainers are respectively arranged on the two eccentric journals on the crank shaft (3) and are respectively contacted with bearing holes of the two cycloidal gears (16) through the outer diameters of the needle bearings (8) without inner and outer rings and with retainers, needle gear cases (17) connected with an intermediate flange plate (10) are arranged on the outer sides of the rigid disc (12) and the output shaft (6), a circle of needle gear pins (15) is circumferentially arranged on the needle gear cases (17), the two cycloid gears (16) are respectively meshed with the pin gears (15) in different directions.

2. The photothermal engineering heliostat driving speed reducer according to claim 1, wherein the shaft neck of the crankshaft (3) is provided with an external spline, and the external spline shaft neck section of the crankshaft (3) is connected with the internal spline of the planetary gear (2).

3. The driving reducer for heliostats in photothermal engineering according to claim 1, wherein the high-speed input planetary reducer (1) is fixed on the intermediate flange (10), the central through hole of the intermediate flange (10) has a spigot for positioning the output shaft of the planetary reducer (1), the intermediate flange (10) is further provided with an oil drain hole, and the oil drain hole is internally provided with a plug screw (13).

4. The photothermal engineering heliostat drive reducer according to claim 1, wherein the rigid disk (12) and the output shaft (6) are fastened together by hexagon socket head cap screws (4) and serve as an output component.

5. The photothermal engineering heliostat driving speed reducer according to claim 1, wherein the rigid disk (12) and the output shaft (6) are respectively provided with a high-precision angular contact ball bearing (14), the inner sides of the high-precision angular contact ball bearings (14) are respectively arranged in bearing holes at the periphery of the rigid disk (12) and the output shaft (6), and the outer sides of the high-precision angular contact ball bearings (14) are arranged in bearing holes of the pin gear housing (17).

6. The photothermal engineering heliostat driving speed reducer according to claim 1, wherein the central part of the output end of the output shaft (6) is sealed with an inner-bag skeleton plug (5), the output shaft (6) is provided with an oil filling hole for filling oil to the central part, and the outer end plug of the oil filling hole plugs an outer screw plug (7).

7. The photothermal engineering heliostat drive reducer according to claim 1, wherein the teeth are formed by optimizing the tooth profile of the portion of the periphery of the cycloid wheel (16) meshing with the pin gear (15).

8. The driving reducer for heliostat of claim 1, wherein the input gear (11), the planetary gear (2) and the cycloidal gear (16) are all of hard tooth surface or integral hardened structure.

Technical Field

The invention relates to the technical field of speed reducers, in particular to a driving speed reducer for a heliostat in photo-thermal engineering.

Background

At present, the light and heat power generation project of 70m is utilized in developing green energy²The heliostat driving equipment is usually driven by a worm gear, has the advantages of quick abrasion, short service life, difficult repair after abrasion, large volume and efficiency of only about 20 percent when being used in photo-thermal engineering, and is traditionally driven by a centerThe transmission is carried out in a mode, the transmission ratio is small, the bearing capacity is poor, the transmission return difference is large, and the device is particularly not suitable for being applied under the working conditions of open air, large temperature difference and large gust.

Disclosure of Invention

The invention provides a heliostat driving speed reducer which is suitable for being applied to the photo-thermal industry and has the advantages of large transmission ratio, high bearing capacity, small return difference and high transmission efficiency.

The technical scheme adopted by the invention is as follows:

a driving speed reducer of a heliostat in photo-thermal engineering comprises a high-speed input planetary speed reducer, a middle flange plate, a rigid plate, two cycloidal gears and an output shaft, wherein the two cycloidal gears are distributed at 180 degrees, the two cycloidal gears are arranged between the rigid plate and the output shaft, the rigid plate is connected with the output shaft, an input gear is arranged on the output shaft of the planetary speed reducer, the input gear penetrates through the middle flange plate and is meshed with a group of planetary gears, the group of planetary gears comprises three identical planetary gears which are circumferentially and uniformly distributed, the centers of the planetary gears are involute internal splines, a crankshaft is respectively arranged at the centers of the three planetary gears, the crankshaft comprises a concentric shaft neck, an eccentric shaft neck and a concentric shaft neck which are sequentially connected, the crankshaft is inserted into mounting holes of the rigid plate, the two cycloidal gears and the output shaft, and conical roller bearings are respectively arranged, the crankshaft is connected with a rigid disc and an output shaft through tapered roller bearings, needle bearings without inner and outer rings and with retainers are respectively arranged on two eccentric shaft necks of the crankshaft and are respectively contacted with bearing holes of two cycloidal gears through the outer diameters of the needle bearings without the inner and outer rings and with retainers, needle gear shells connected with a middle flange plate are arranged on the outer sides of the rigid disc and the output shaft, a circle of needle gear pins are circumferentially arranged on the needle gear shells, and the two cycloidal gears are respectively meshed with the needle gear pins in different directions.

The neck of the crankshaft is provided with an external spline, and the neck section of the external spline shaft of the crankshaft is connected with the internal spline of the planetary gear.

The high-speed input planetary reducer is fixed on the middle flange plate, a central through hole of the middle flange plate is provided with a spigot for positioning an output shaft of the planetary reducer, the middle flange plate is also provided with an oil drain hole, and a screw plug is arranged in the oil drain hole.

The rigid disk and the output shaft are fastened into a whole through the hexagon socket head cap screw and are used as an output component.

The high-precision angular contact ball bearings are respectively arranged on the rigid disc and the output shaft, the inner sides of the high-precision angular contact ball bearings are respectively arranged in bearing holes on the periphery of the rigid disc and the output shaft, and the outer sides of the high-precision angular contact ball bearings are arranged in bearing holes of the pin gear shell.

The central part of the output end of the output shaft is sealed with an inner bag framework plug, an oil filling hole for filling oil to the central part is formed in the output shaft, and an outer plug screw is plugged at the outer end of the oil filling hole.

And the tooth part is formed by optimizing the tooth shape of the part meshed with the pin gear pin on the periphery of the cycloidal gear.

The input gear, the planetary gear and the cycloidal gear all adopt hard tooth surfaces or an integral hardening structure.

The speed reducer connected with the pin gear shell and provided with the middle flange plate is a D-shaped speed reducer, the pin gear shell is integrally connected with a chassis, and the middle flange plate is a middle flange plate frame with the middle part being lengthened to form a Y-shaped speed reducer.

The invention has the beneficial effects that: the high-speed stage of the invention adopts a reliable power splitting mode, changes the traditional central transmission into peripheral transmission, changes and optimizes the weakest point of the original transmission mode, adopts a differential gear speed reducing mechanism, a cycloid tooth profile and one-tooth-difference transmission at an output part, and can realize larger transmission ratio and smaller output power when being applied to the photo-thermal industry.

Drawings

Fig. 1 is a schematic structural diagram of a D-type speed reducer according to the present invention.

Fig. 2 is a sectional view taken along line a-a of fig. 1.

Fig. 3 is a schematic diagram of the external shape structure of the D-type speed reducer of the present invention.

Fig. 4 is a schematic diagram of the external shape structure of the Y-type speed reducer of the present invention.

Wherein: 1-a planetary reducer; 2-a planetary gear; 3-crankshaft; 4-socket head cap screw; 5-plugging an inner wrapping framework; 6-an output shaft; 7-external screw plug; 8-needle bearing without inner and outer rings and with retainer; 9-tapered roller bearings; 10-a middle flange plate; 11-input gear; 12-a rigid disc; 13-a plug screw; 14-angular contact ball bearings; 15-a pin gear pin; 16-a cycloid gear; 17-a needle gear shell; 18-chassis.

Detailed Description

A driving speed reducer of a heliostat in photo-thermal engineering comprises a high-speed input planetary speed reducer 1, a middle flange plate 10, a rigid plate 12, two cycloidal gears 16 and an output shaft 6 which are distributed at 180 degrees, wherein the two cycloidal gears 16 are arranged between the rigid plate 12 and the output shaft 6, the rigid plate 12 is connected with the output shaft 6, an input gear 11 is installed on the output shaft of the planetary speed reducer 1, the input gear 11 penetrates through the middle flange plate 10 and is meshed with a set of planetary gears 2, the set of planetary gears 2 comprises three identical planetary gears 2, the three planetary gears 2 are uniformly distributed in the circumferential direction, the centers of the planetary gears 2 are involute internal splines, and a crank shaft 3 is respectively installed at the centers of the three planetary gears 2, so that the original planetary cycloidal transmission only has a weak structure of one crank shaft transmission at the center, power splitting is realized, the planetary transmission structure is enhanced and optimized, and concentric shaft necks, which are sequentially connected, Eccentric shaft neck, eccentric shaft neck and concentric shaft neck, the crankshaft 3 is inserted in the mounting holes of the rigid disk 12, the two cycloidal gears 16 and the output shaft 6, the two concentric shaft necks on the crankshaft 3 are respectively provided with a tapered roller bearing 9, and are respectively connected with a rigid disk 12 and an output shaft 6 through tapered roller bearings 9, two eccentric journals on the crankshaft 3 are respectively provided with a needle roller bearing 8 without an inner ring and an outer ring and with a retainer, the outer diameters of the needle roller bearings 8 without inner and outer rings and with the retainers are respectively contacted with bearing holes of two cycloidal gears 16, the outer sides of the rigid disk 12 and the output shaft 6 are provided with a needle gear shell 17 connected with the middle flange 10, a circle of needle gear pins 15 are circumferentially arranged on the needle gear shell 17, the two cycloidal gears 16 are respectively meshed with the needle gear pins 15 on different directions, therefore, when the planet gear 2 drives the crank shaft 3 to rotate for a circle, the cycloid wheel 16 rotates in the opposite direction through meshing with the pin gear pin 15 for a pitch, and therefore the speed reduction of one tooth difference is achieved. The internal shape structure of the D-type speed reducer is the same as the internal structure principle of the Y-type speed reducer, as shown in fig. 2, the high-speed stage adopts a reliable power splitting mode, changes the original central transmission into peripheral transmission, completely changes and optimizes the weakest point of the original transmission mode, and the output part adopts a differential gear speed reducing mechanism, a cycloid tooth shape and one-tooth-difference transmission.

The shaft neck of the crankshaft 3 is provided with an external spline, and the external spline shaft neck section of the crankshaft 3 is connected with the internal spline of the planetary gear 2.

The high-speed input planetary reducer 1 is fixed on the middle flange plate 10, a central through hole of the middle flange plate 10 is provided with a spigot for positioning an output shaft of the planetary reducer 1, the middle flange plate 10 is also provided with an oil drain hole, and a screw plug 13 is arranged in the oil drain hole.

The rigid disk 12 and the output shaft 6 are fastened into a whole through the socket head cap screws 4 and are used as output components.

The high-precision angular contact ball bearings 14 are respectively arranged on the rigid disc 12 and the output shaft 6, the inner sides of the high-precision angular contact ball bearings 14 are respectively arranged in bearing holes at the peripheries of the rigid disc 12 and the output shaft 6, the outer sides of the high-precision angular contact ball bearings 14 are arranged in the bearing holes of the pin gear shell 17, and the high-precision angular contact ball bearings bear the external torque, overturning moment, output stability and the like of the speed reducer, so that the high-precision angular contact ball bearings are suitable for being used under the working conditions of open air, large temperature difference.

The central part of the output end of the output shaft 6 is sealed with an inner-bag framework plug 5, an oil filling hole for filling oil to the central part is arranged on the output shaft 6, and the outer end of the oil filling hole is plugged with an outer plug 7.

The tooth profile of the meshing part of the periphery of the cycloid wheel 16 and the pin gear 15 is optimized to form a tooth profile, so that the basic conditions of high bearing capacity, high transmission precision and small transmission return difference are realized according to the instantaneous requirement of conjugate tooth number.

The input gear 11, the planetary gear 2 and the cycloid gear 16 all adopt hard tooth surfaces or an integral hardening structure so as to meet the requirements of less consumable materials, high efficiency and long service life of matching parts in the photo-thermal industry.

The speed reducer which is connected with the pin gear shell 17 and is provided with the middle flange plate 10 is a D-shaped speed reducer, the pin gear shell 17 is integrally connected with a chassis 18, and the middle flange plate 10 is a middle flange plate frame with a lengthened middle part to form a Y-shaped speed reducer.

The D-type speed reducer and the Y-type speed reducer can be respectively and independently used, namely the output shaft is upwards or downwards installed for use and horizontally installed for use, and the D, Y model box can be used for accurate operation of orientation and pitching motion of the heliostat in photothermal engineering, so that the D-type speed reducer and the Y-type speed reducer are applied to 70m in photothermal engineering²The heliostat drives a speed reducer, the main body part in an effective narrow space can reach 170, the total speed reduction ratio of a high-speed-level planetary speed reducer configuration mode can reach 34000, the large transmission ratio, the maximum output torque can reach 17000 N.m, the return difference is less than or equal to 1.5arc.min, and the characteristics of high bearing capacity and small return difference are realized; the speed reducer is not only suitable for the solar power generation industry of new energy, but also suitable for the use working conditions of large-scale traditional industrial robots, and due to the characteristic of large rated bearing capacity in the series, the speed reducer can be applied to the configuration of important joints of large and heavy industrial robots, and can fill the blank of products in the aspect of the market; in addition, the device can also be applied to high-bearing high-motion-precision mechanical transmission such as precision printing machinery, satellite tracking equipment, aerospace equipment, medical equipment, engineering machinery, military equipment and the like.

The embodiments of the present invention have been described in detail, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.