阅读说明：本技术 一种基于推杆的偏心减速传动机构 (Eccentric speed reduction transmission mechanism based on push rod ) 是由 章笑吟 秦鹏谊 游思梁 陈煜达 于 2019-02-28 设计创作，主要内容包括：本发明涉及一种基于推杆的偏心减速传动机构,包括偏心转盘、力矩管、转盘连接件、滑块、侧面支撑、底板、步进电机、行星减速机、推杆和螺帽,所述的偏心转盘通过转盘连接件安装在力矩管上,同时上述组件被放置于由滑块、侧面支撑和底板组成的底座上,由偏心转盘和滑块构成转动副,同时步进电机和行星减速机串联并通过联轴器与推杆的一端串联,行星减速机则通过电机安装架和电机连接块安装于底座上；所述的推杆的另一端设有螺帽,螺帽通过螺帽连接件安装于力矩管上。本发明更加稳定,推杆寿命也相对更长,在水平方向上的刚性更强,镜面形变更小,还有输出扭矩大,安装简单,耐候性好,传动可靠,成本低等优点。(The invention relates to a push rod-based eccentric speed reduction transmission mechanism, which comprises an eccentric turntable, a torque tube, a turntable connecting piece, a slider, a side support, a bottom plate, a stepping motor, a planetary reducer, a push rod and a nut, wherein the eccentric turntable is arranged on the torque tube through the turntable connecting piece; the other end of the push rod is provided with a nut, and the nut is arranged on the torque tube through a nut connecting piece. The invention is more stable, the service life of the push rod is relatively longer, the rigidity in the horizontal direction is stronger, the mirror surface deformation is smaller, and the invention also has the advantages of large output torque, simple installation, good weather resistance, reliable transmission, low cost and the like.)

1. The utility model provides an eccentric speed reduction drive mechanism based on push rod which characterized in that: the eccentric rotating disc comprises an eccentric rotating disc (1), a torque tube (2), a rotating disc connecting piece (3), a sliding block (4), a side support (5), a bottom plate (6), a stepping motor (7), a planetary reducer (8), a push rod (12) and a screw cap (13), wherein the eccentric rotating disc (1) is installed on the torque tube (2) through the rotating disc connecting piece (3), meanwhile, the components are placed on a base consisting of the sliding block (4), the side support (5) and the bottom plate (6), a rotating pair is formed by the eccentric rotating disc (1) and the sliding block (4), meanwhile, the stepping motor (7) and the planetary reducer (8) are connected in series and are connected with one end of the push rod (12) through a coupler (11), and the planetary reducer (8) is installed on the base through a motor installation frame (9) and a motor connecting block (10); the other end of the push rod (12) is provided with a nut (13), and the nut (13) is arranged on the torque tube (2) through a nut connecting piece (14).

2. The push-rod based eccentric reduction transmission according to claim 1, characterized in that: the side support structure is characterized in that side supports (5) are arranged on two sides of the bottom plate (6), the side supports (5) are installed on the bottom plate (6) through bolts, 2 sliding blocks (4) are arranged on the side supports (5), and the sliding blocks (4) are installed on the side supports (5) through the bolts and nuts in a matched mode.

3. The push-rod based eccentric reduction transmission according to claim 1, characterized in that: an output shaft of the stepping motor (7) is connected to an input end of the planetary speed reducer (8) and fixed at four corners by screws and nuts, and an output end of the planetary speed reducer (8) is connected in series and fixed with a push rod (12) through a coupler (11); the planetary reducer (8) is arranged on the motor connecting block (10) through holes at four corners by using screws and nuts; a small boss (15) is arranged between the motor mounting frame (9) and the motor connecting block (10), a square hole inserted into the motor connecting block (10) is used as a rotating shaft at the square head end of the small boss (15), and the small boss is arranged into round holes at two sides of the motor mounting frame (9) through a bearing (16); the motor mounting rack (9) is fixed with the threaded hole on the bottom plate (6) through a screw.

4. The push-rod based eccentric reduction transmission according to claim 1, characterized in that: the push rod (12) is screwed into the nut (13) along the thread, the nut (13) is installed on the torque tube (2) through the nut connecting piece (14), and the curved surface of the nut connecting piece (14) is matched with the outer surface of the torque tube (2) and is welded and fixed.

5. The push-rod based eccentric reduction transmission according to claim 1, characterized in that: the curved surface of the turntable connecting piece (3) is matched with the outer surface of the torque tube (2) and is welded and fixed, and meanwhile, the small hole in the eccentric turntable (1) is aligned with the small hole in the turntable connecting piece (3) and is fixed by a bolt and a nut.

[ technical field ] A method for producing a semiconductor device

The invention relates to a transmission mechanism, in particular to an eccentric speed reduction transmission mechanism based on a push rod.

[ background of the invention ]

Solar energy is increasingly applied as a clean renewable energy source, particularly, a photo-thermal power generation technology is a new solar energy utilization technology following a photovoltaic power generation technology, and the photo-thermal power generation technology mainly comprises the following steps: (1) tower type solar thermal power generation technology; (2) a trough type solar thermal power generation technology; (3) disc type solar thermal power generation technology; (4) a linear Fresnel solar thermal power generation technology. The tower type solar thermal power generation adopts a large number of heliostats to gather sunlight on a heat absorber arranged on the top of a heat absorbing tower, and heats working media to generate steam to push a steam turbine to drive a generator to generate power.

The pitching and azimuth rotation of the heliostat are usually realized by a special speed reduction transmission mechanism, so the performance of the speed reduction transmission mechanism directly influences the light condensation capacity of a heliostat field. If the transmission mechanism of the heliostat deforms and loses efficacy in the operation process, a series of problems of light spots which are difficult to gather, heat loss of incident heat of a heat absorber and the like can be caused, so that the reflectivity and the power generation efficiency of the photo-thermal power generation are reduced. Therefore, the driving mechanism of the heliostat constitutes an extremely important ring in the design and construction process of the solar photo-thermal power station.

At present, a plurality of different speed reduction transmission structures are put into use, wherein one of the more commonly used structures is that two groups of lenses are connected on two moment tubes and are respectively arranged at two sides of a double-shaft driving system through connecting pieces such as flanges, and the moment tubes are driven to rotate by the driving system by taking the axes of the moment tubes as rotating shafts. In the structure using the moment tube as the rotating shaft, two sets of components consisting of the lens and the shorter moment tube are required to be respectively arranged at the two sides of the driving system.

The other is that two groups of lenses are connected with two ends of a longer torque tube, one end of an electric or hydraulic push rod is arranged at a fixed position, the other end of the electric or hydraulic push rod is connected with the surface of the torque tube, the torque tube is connected with an independent shaft through structures such as a connecting rod, and the torque tube is driven by equipment such as the electric push rod or the hydraulic push rod to eccentrically rotate by taking the shaft as a rotating shaft; in the structure, the torque tube eccentrically rotates relative to an independent rotating shaft, two ends of at least one electric or hydraulic push rod are required to be respectively arranged on a fixed position and the surface of the torque tube; the weight of the heliostat and the moment tube is borne by the moment tube which is driven by a structure consisting of a push rod and a connecting rod for connecting the moment tube and the rotating shaft.

[ summary of the invention ]

The invention aims to: aiming at the defects and shortcomings of the prior art, the eccentric speed reduction transmission mechanism based on the push rod is more stable in structure and larger in transmission torque and is easy to install compared with the existing transmission mechanism, and the defects of the prior art in the aspects of rigidity, stability and the like are overcome.

In order to achieve the purpose, the invention adopts the technical scheme that: an eccentric speed reduction transmission mechanism based on a push rod comprises an eccentric rotary table, a torque tube, a rotary table connecting piece, a sliding block, a side support, a bottom plate, a stepping motor, a planetary speed reducer, the push rod and a nut, wherein the eccentric rotary table is installed on the torque tube through the rotary table connecting piece; the other end of the push rod is provided with a nut, and the nut is arranged on the torque tube through a nut connecting piece.

In the present invention: the side face support is arranged on two sides of the bottom plate and is installed on the bottom plate through bolts, and the side face support is provided with 2 sliding blocks which are installed on the side face support through the bolts and nuts in a matched mode.

In the present invention: an output shaft of the stepping motor is connected to an input end of the planetary reducer and fixed at four corners by screws and nuts, and an output end of the planetary reducer is connected in series and fixed with a push rod through a coupler; the planetary reducer is arranged on the motor connecting block through holes at four corners by using screws and nuts; a small boss is arranged between the motor mounting frame and the motor connecting block, a square hole inserted into the motor connecting block is used as a rotating shaft at the square end of the small boss, and the small boss is arranged into round holes at two sides of the motor mounting frame through a bearing; the main purpose of the assembly mode is to ensure the coaxiality of rotating shafts on two sides of the motor connecting block; the motor mounting frame is fixed with the threaded hole on the bottom plate through a screw.

In the present invention: the push rod is screwed into the nut along the threads, the nut is installed on the torque tube through the nut connecting piece, and the curved surface of the nut connecting piece is matched with the outer surface of the torque tube and is welded and fixed.

In the present invention: the curved surface of the rotary table connecting piece is matched with the outer surface of the torque tube and is welded and fixed, and meanwhile, the small hole in the eccentric rotary table is aligned with the small hole in the rotary table connecting piece and is fixed by a bolt and a nut.

After adopting the structure, the invention has the beneficial effects that: the invention is more stable, the service life of the push rod is relatively longer, the rigidity in the horizontal direction is stronger, the mirror surface deformation is smaller, and the invention also has the advantages of large output torque, simple installation, good weather resistance, reliable transmission, low cost and the like.

[ description of the drawings ]

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, and are not to be considered limiting of the invention, in which:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is another schematic structural view of the present invention;

FIG. 3 is a schematic view of the combination of the side support and the base plate of the present invention;

FIG. 4 is a schematic view of the connection of the stepping motor to the push rod in the present invention;

FIG. 5 is a schematic view of the connection of the push rod to the nut connector of the present invention;

FIG. 6 is a schematic view of the connection of the torque tube to the eccentric rotary disk according to the present invention;

fig. 7 is a schematic structural diagram of the present invention.

In the figure: 1. an eccentric turntable; 2. a torque tube; 3. a turntable connector; 4. a slider; 5. side support; 6. a base plate; 7. a stepping motor; 8. a planetary reducer; 9. a motor mounting bracket; 10. a motor connecting block; 11. a coupling; 12. a push rod; 13. a nut; 14. a nut connector; 15. a small boss; 16. and a bearing.

[ detailed description ] embodiments

The present invention will now be described in detail with reference to the drawings and specific embodiments, wherein the exemplary embodiments and descriptions are provided only for the purpose of illustrating the present invention and are not to be construed as limiting the present invention.

As shown in fig. 1-6, an eccentric reduction transmission mechanism based on a push rod comprises an eccentric rotary table 1, a torque tube 2, a rotary table connecting piece 3, a slide block 4, a side support 5, a bottom plate 6, a stepping motor 7, a planetary reducer 8, a push rod 12 and a nut 13, wherein the number of the eccentric rotary tables 1 is two, each eccentric rotary table 1 is installed on the torque tube 2 through the rotary table connecting piece 3, the components are placed on a base composed of the slide block 4, the side support 5 and the bottom plate 6, the eccentric rotary table 1 and the slide block 4 form a rotating pair, the stepping motor 7 and the planetary reducer 8 are connected in series and connected in series with one end of the push rod 12 through a coupler 11, and the planetary reducer 8 is installed on the base through a motor installation frame 9 and a motor connection block 10; the other end of the push rod 12 is provided with a nut 13, and the nut 13 is arranged on the torque tube 2 through a nut connecting piece 14. The side support 5 is arranged on two sides of the bottom plate 6, the side support 5 is installed on the bottom plate 6 through bolts, meanwhile, 2 sliding blocks 4 are arranged on the side support 5, and the sliding blocks 4 are installed on the side support 5 through the bolts and nuts in a matched mode.

An output shaft of the stepping motor 7 is connected to an input end of the planetary reducer 8 and fixed at four corners by screws and nuts, and an output end of the planetary reducer 8 is connected in series and fixed with a push rod 12 through a coupler 11; the planetary reducer 8 is arranged on the motor connecting block 10 through holes at four corners by using screws and nuts; a small boss 15 is arranged between the motor mounting frame 9 and the motor connecting block 10, a square hole inserted into the motor connecting block 10 is used as a rotating shaft at the square end of the small boss 15, and the small boss is arranged into round holes at two sides of the motor mounting frame 9 through a bearing 16; the main purpose of this assembly mode is to ensure the coaxiality of the rotating shafts on both sides of the motor connecting block 10; the motor mounting frame 9 is fixed with the threaded hole on the bottom plate 6 through a screw. The push rod 12 is screwed into the nut 13 along the thread, the nut 13 is arranged on the moment tube 2 through the nut connecting piece 14, and the curved surface of the nut connecting piece 14 is matched with the outer surface of the moment tube 2 and is welded and fixed. The curved surface of the rotary table connecting piece 3 is matched with the outer surface of the torque tube 2 and is welded and fixed, and meanwhile, the small hole on the eccentric rotary table 1 is aligned with the small hole on the rotary table connecting piece 3 and is fixed by a bolt and a nut.

As shown in figure 7, the invention adopts the threaded push rod 12 as a transmission mechanism, and the threaded push rod 12 has the advantages of large output torque, suitability for outdoor rough application, no need of lubrication, simple protection, wind and sand resistance, corrosion resistance, self-locking and the like. As shown in FIG. 7, O is the pitch rotation axis, O' is the fixed end of the push rod, and A is the position of the nut 13. The stepping motor 7 drives the push rod 12 to rotate and drives the nut 13 to linearly move along the push rod L, and the nut 13 drives the torque tube 2 to rotate around the rotating shaft O, so that pitching transmission is realized.

By the scheme, the invention has the advantage that the lens and the bracket are arranged at the two ends of the single longer moment tube. Thanks to the rigidity of a complete steel pipe, the deformation of the torque tube caused by the weight of the heliostat is reduced, and meanwhile, the strength and the stability of the structure are ensured. However, the steel pipe used for the torque pipe is often out of roundness and has high surface roughness, so that in the structure in which the torque pipe in the background art is a rotating shaft, a single long torque pipe cannot be directly installed in cooperation with a driving system effectively.

On the other hand, the push rod protection device has the advantage that the push rod is effectively protected. Because the load caused by bearing the weight of the heliostat by the push rod and the connecting rod in the structure is different, the weight of the heliostat system is shared by the structure consisting of the side bracket and the sliding block. The load of the screw push rod during operation is reduced because the load-bearing function is not realized any more, and the service life of the screw push rod is prolonged. And compare disc structure and the connecting rod and be more excellent in intensity and stability, also make whole structure more stable. Meanwhile, the advantage of adopting a whole torque tube for assembly is kept, and the rigidity in the horizontal direction is ensured.

The above description is directed to specific embodiments of the present invention, but the present invention is not limited to the above description. Any equivalent modifications and alterations to this technical solution would be considered within the scope of this invention by those skilled in the art. Accordingly, equivalent changes and modifications made without departing from the spirit and scope of the present invention should be covered by the present invention.