Heliostat speed reducer and heliostat

Abstract

The utility model discloses a heliostat speed reducer which comprises a first connecting part, a second connecting part and an input shaft. The axis of the worm gear is fixed relative to the first connecting part, and the second connecting part is fixed with the worm gear and also rotates around the axis. And the first connecting part and the second connecting part are also used for being mounted on the heliostat. The connecting position of the input shaft at the first connecting part can be adjusted in the radial direction of the input shaft, and therefore the gap between the worm and the worm gear is adjusted. The heliostat comprises a stand column, a third connecting part, the heliostat speed reducer, a motor, a mounting frame, a plurality of plane mirrors and an electric cylinder. The heliostat speed reducer has the advantages that the heliostat speed reducer can well adjust the gap between the worm gear and the worm and keep the heliostat stable in the long-term operation process.

Description

Technical Field

[0001] The utility model relates to a heliostat, in particular to a heliostat reducer and a heliostat. Background Art

[0002] A heliostat is an optical device that reflects the sun's rays in a fixed direction. Therefore, the mirror on the heliostat needs to be able to adjust its position along with the sun's rays. Currently, two types of rotations are generally designed for the mirror: rotation around a vertical axis and rotation around a horizontal axis. The position of the mirror is adjusted by combining these two rotations, and the amplitudes of these two rotations are generally not large.

[0003] For the rotation around the vertical axis, a reducer is generally used to complete it. This type of heliostat reducer generally includes: a first connection part, a second connection part and an input shaft. The first connection part and the second connection part are both used for installation with the heliostat. That is, the motor first drives the input shaft of the reducer to rotate, and then through the worm gear transmission, the speed is reduced and the torque is increased, and finally the first connection part and the second connection part rotate relative to each other. The reducer generally needs to design the gap adjustment between the worm wheel and the worm gear so that the gap between the worm wheel and the worm gear can be adjusted to a suitable range to improve the transmission efficiency. However, unlike reducers in other scenarios, the operating environment of the heliostat is subject to greater shaking due to wind loads. After the gap adjustment between the worm wheel and the worm gear is designed, it is easy to affect the stability of the reducer during the long-term operation of the heliostat. Utility Model Content

[0004] The present application provides a heliostat reducer and a heliostat, which can solve the problems of the existing heliostat: the problem of not being able to well balance the adjustment of the gap between the worm gear and the stability of the heliostat during the long-term operation.

[0005] In the present application, a first aspect provides a heliostat reducer, comprising:

[0006] A first connecting portion, one side of which in the vertical direction is a first connecting position for mounting to a heliostat;

[0007] A second connection portion is fixedly connected with a worm gear and is rotatably connected to the first connection portion around a vertical axis; a side away from the first connection position is a second connection position for mounting to a heliostat;

[0008] The input shaft is fixedly connected with a worm meshing with the worm wheel; it is rotatably connected to the first connection part around a horizontal axis; and its connection position at the first connection part can be adjusted along its own radial direction.

[0009] In some embodiments, mounting blocks are fixedly connected to the first connecting portion at two third connecting positions corresponding to the input shaft. The mounting blocks can adjust their fixed positions on the first connecting portion around a horizontal first axis. A first bearing for mounting the input shaft is installed on the mounting block, and the axis of the input shaft is eccentric to the first axis.

[0010] In some embodiments, a second bearing for rotatably connecting is provided between a portion of the worm gear near the first connecting position and the first connecting portion; a number of ball bearings for rotatably connecting are provided between a portion of the worm gear near the second connecting position and the first connecting portion.

[0011] In some embodiments, the worm is a ZC worm or an enveloping worm.

[0012] In some embodiments, the first connecting position and / or the second connecting position is a flange.

[0013] In the present application, in a second aspect, a heliostat is provided, including:

[0014] A column;

[0015] A third connecting portion, located above the column;

[0016] The heliostat speed reducer described in the first aspect, located between the column and the third connecting portion; the first connecting position and the second connecting position are respectively fixedly connected to the third connecting portion and the column;

[0017] A motor, fixedly connected to the first connecting portion; a coupling portion is provided between the output shaft and the input shaft; for driving the third connecting portion to rotate relative to the column;

[0018] A mounting frame, hinged to the third connecting portion around a horizontal axis;

[0019] A plurality of plane mirrors, fixedly connected to the mounting frame;

[0020] An electric cylinder, for driving the mounting frame to swing relative to the third connecting portion.

[0021] In some embodiments, the coupling portion is a planetary gearbox.

[0022] In summary, in the present application, a heliostat reducer includes a first connection part, a second connection part, and an input shaft. The axis of the worm gear is fixed relative to the first connection part. The second connection part is fixed to the worm gear and also rotates around this axis. Both the first connection part and the second connection part are also used for installation on the heliostat. The input shaft can adjust its connection position in the first connection part along its own radial direction, thereby adjusting the clearance between the worm and the worm gear. A heliostat includes a column, a third connection part, the above-mentioned heliostat reducer, a motor, a mounting bracket, a plurality of flat mirrors, and an electric cylinder. The beneficial effects are as follows: The heliostat reducer can well balance the adjustment of the clearance between the worm and the worm gear and maintain stability during the long-term operation of the heliostat. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or in the background art, the following will describe the drawings required for use in the embodiments of the present application or in the background art.

[0024] Figure 1 Schematic diagram of the heliostat reducer;

[0025] Figure 2 Top view of the heliostat reducer;

[0026] Figure 3 is Figure 2 Cross-sectional view along A-A in

[0027] Figure 4 is Figure 2 Cross-sectional view along B-B in

[0028] Figure 5 Rear view of the heliostat;

[0029] Figure 6 Schematic diagram of the setting of the heliostat at the third connection part;

[0030] Figure 7 is Figure 6 Enlarged schematic diagram of part A in

[0031] Figure 8 Schematic diagram of the motor and the heliostat reducer.

[0032] In the figure,

[0033] 1. First connection part; 1a. First connection position; 1b. Third connection position; 1C. Mounting block; 1d. First bearing; 1e. First inner cavity; 1f. Second inner cavity;

[0034] 2. Second connection part; 2a. Worm gear; 2a1. Second bearing; 2a2. Ball; 2b. Second connection position;

[0035] 3. Input shaft; 3a. Worm;

[0036] 4. Column

[0037] 5. Third connecting part

[0038] 6. Motor; 6a. Coupling part

[0039] 7. Mounting bracket; 7a. Mounting rod; 7b. Triangular frame body

[0040] 8. Plane mirror

[0041] 9. Electric cylinder Detailed implementation mode

[0042] The following further explanations are made in conjunction with the attached drawings. The attached drawings are only examples and are not drawn strictly to scale. Unless otherwise defined, the technical terms or scientific terms used in this disclosure should have the ordinary meaning understood by those with ordinary skills in the field to which this disclosure belongs. The "first", "second" and similar words used in this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "including" or "comprising" mean that the elements or objects appearing before this word cover the elements or objects listed after this word and their equivalents, without excluding other elements or objects. Words such as "connected" or "linked" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Upper", "lower", "left", "right", etc. are only used to represent relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly. Without conflict, the embodiments in this application can be combined with each other.

[0043] Please refer to Figure 1 and Figure 2 A heliostat speed reducer includes a first connecting part 1, a second connecting part 2 and an input shaft 3.

[0044] One side of the first connecting part 1 in the vertical direction is a first connecting position 1a, and the first connecting position 1a is used for mounting to the heliostat.

[0045] In some implementation modes, the first connecting position 1a can be designed as a flange.

[0046] Please refer to Figure 1 and Figure 3, the second connecting part 2 is fixedly connected with a worm gear 2a, which is rotatably connected to the first connecting part 1 around a vertical axis. More specifically, the first connecting part 1 may have a cylindrical first inner cavity 1e, and the axis of the first inner cavity 1e is also vertical. The other side of the first connecting part 1 opposite to the first connecting position 1a in the vertical direction is the location of the opening of the first inner cavity 1e. During the installation of the second connecting part 2 to the first connecting part 1, the worm gear 2a enters the first inner cavity 1e from this opening, and after the installation is completed, the worm gear 2a is located in the first inner cavity 1e.

[0047] In some embodiments, the rotational connection arrangement between the second connecting part 2 and the first connecting part 1 may be: there is a second bearing 2a1 for rotational connection between the part of the worm gear 2a close to the first connecting position 1a and the first connecting part 1, and the second bearing 2a1 improves the support rigidity and rotational accuracy; there are a number of balls 2a2 for rotational connection between the part of the worm gear 2a close to the second connecting position 2b and the first connecting part 1.

[0048] That is to say, the rotational connection between the second connecting part 2 and the first connecting part 1 is designed between the worm gear 2a and the first inner cavity 1e to ensure that the worm gear 2a rotates stably relative to the first connecting part 1. During assembly, the worm gear 2a can be rotatably connected to the first connecting part 1 first, and then the second connecting part 2 is fixedly connected to the worm gear 2a.

[0049] The side of the second connecting part 2 away from the first connecting position 1a is the second connecting position 2b for installing to the heliostat.

[0050] In some embodiments, the second connecting position 2b can be designed as a flange.

[0051] Please refer to Figure 1 and Figure 4 , the input shaft 3 is rotatably connected to the first connecting part 1 around a horizontal axis. More specifically, the first connecting part 1 may have a cylindrical second inner cavity 1f that communicates with the first inner cavity 1e, and the axis of the second inner cavity 1f is also horizontal. The two side positions of the second inner cavity 1f in the horizontal direction are respectively for connecting the two ends of the input shaft 3.

[0052] A worm 3a is also fixedly connected to the input shaft 3. The worm 3a is located in the second inner cavity 1f and meshes with the worm gear 2a.

[0053] The input shaft 3 can also adjust its connection position on the first connecting part 1 along its own radial direction. Correspondingly, the position of the worm 3a relative to the first connecting part 1 also adjusts radially with the input shaft 3, thereby adjusting the clearance between the worm 3a and the worm gear 2a.

[0054] Please refer to Figure 1 and Figure 4, In some embodiments, mounting blocks 1C are fixedly connected to both of the two third connection positions 1b of the first connection portion 1 corresponding to the input shaft 3. The mounting blocks 1C can adjust their fixed positions on the first connection portion 1 around a horizontal first axis. More specifically, both of these two third connection positions 1b of the first connection portion 1 can be hole positions for mounting. The mounting blocks 1C are provided with annular protrusions that are matched with and inserted into the hole positions, and the axis corresponding to the annular protrusion and the hole position is the first axis. A first bearing 1d for mounting the input shaft 3 is installed on the mounting block 1C, that is, a groove for installing the first bearing 1d is provided on the mounting block 1C. The axis of the input shaft 3 is eccentric with respect to the first axis. That is to say, the axis of this groove is eccentric with respect to the first axis. After the first bearing 1d is installed in this groove, the axis of the inner ring is eccentric with respect to the first axis. After the input shaft 3 is installed on the first bearing 1d, the axis of the input shaft 3 is also eccentric with respect to the first axis.

[0055] A plurality of hole positions can be evenly arranged in a circular array around the first axis on both of the two mounting blocks 1C. That is, the angle (marked as the first angle) corresponding to any two adjacent hole positions is equal. When the mounting block 1C adjusts its fixed position on the first connection portion 1 around the first axis, the rotation angle is an integer multiple of the first angle.

[0056] In some embodiments, the worm 3a preferentially selects a ZC worm or an enveloping worm from various existing tooth profile types. The ZC worm is the arc cylindrical worm 3a. Based on the cylindrical worm, the tooth profile in its axial plane or normal plane is an arc or an enveloping surface of a toroidal surface. The ZC worm or the enveloping worm can better adapt to the above-mentioned method of "the position of the worm 3a relative to the first connection portion 1 also adjusts radially along with the input shaft 3, thereby adjusting the clearance between the worm 3a and the worm gear 2a".

[0057] Please refer to Figure 5 and Figure 6 , A heliostat includes a column 4, a third connection portion 5, the above-mentioned heliostat reducer, a motor 6, a mounting bracket 7, a plurality of plane mirrors 8, and an electric cylinder 9.

[0058] The bottom of the column 4 is used to mount the heliostat on the ground.

[0059] The third connection portion 5 is located above the column 4.

[0060] Please refer to Figure 6 and Figure 7 , The heliostat reducer is located between the column 4 and the third connection portion 5. The first connection position 1a and the second connection position 2b are respectively fixedly connected to the third connection portion 5 and the column 4. The heliostat reducer is used to drive the third connection portion 5 to rotate relative to the column 4. That is to say, the worm gear 2a is relatively fixed to the column 4. As the input shaft 3 rotates, the first connection portion 1 rotates relative to the second connection portion 2, and naturally the second connection portion 2 also rotates relative to the column 4.

[0061] The motor 6 is fixedly connected to the first connecting portion 1, and a coupling portion 6a is provided between the output shaft and the input shaft 3 of the motor 6. That is to say, the motor 6 is used to drive the input shaft 3 to rotate, thereby driving the third connecting portion 5 to rotate relative to the column 4.

[0062] The mounting bracket 7 is hinged to the third connecting portion 5 about a horizontal axis. More specifically, the mounting bracket 7 includes a horizontal mounting rod 7a and a plurality of triangular frame bodies 7b fixedly connected to the mounting rod 7a, and the hinged position of the mounting bracket 7 and the third connecting portion 5 is on the mounting rod 7a.

[0063] A plurality of plane mirrors 8 are fixedly connected to the mounting bracket 7, and the third connecting position 1b of the plane mirror 8 and the mounting bracket 7 is on the triangular frame body 7b. More specifically, a plurality of plane mirrors 8 are installed along the vertical direction on two adjacent triangular frame bodies 7b.

[0064] The electric cylinder 9 is used to drive the mounting bracket 7 to swing relative to the third connecting portion 5. More specifically, the cylinder body of the electric cylinder 9 is hinged to the mounting rod 7a, and the piston rod is hinged to the third connecting portion 5.

[0065] By means of the motor 6 and the heliostat speed reducer, the positions of these plane mirrors 8 are adjusted about the vertical axis; by means of the electric cylinder 9, the positions of these plane mirrors 8 are adjusted about the horizontal axis.

[0066] Please refer to Figure 8 , in some embodiments, the coupling portion 6a is a planetary gearbox.

[0067] Since the angle that the plane mirror 8 needs to rotate when adjusting its position about the vertical axis is generally small, and the volume of the mounting bracket 7 and the plane mirror 8 is relatively large, the requirements for the motor 6 and the heliostat speed reducer of the heliostat are low speed and high torque. Through the transmission of the worm gear 2a and the worm 3a, the speed reduction and torque increase can be achieved from the input shaft 3 to the first connecting portion 1. Through the rotation of the multi-stage planet carriers of the planetary gearbox, the speed reduction and torque increase can also be achieved from the output shaft of the motor 6 to the input shaft 3 before the input shaft 3 reaches the first connecting portion 1. The combined action of the two can more easily meet the requirements for the motor 6 and the heliostat speed reducer of the heliostat.

Claims

1. A heliostat reducer, characterized in that: include: A first connecting portion (1), one side of which in the vertical direction is a first connecting position (1a) for mounting on a heliostat; A second connection portion (2) is fixedly connected to a worm gear (2a) and is rotatably connected to the first connection portion (1) around a vertical axis; a side away from the first connection position (1a) is a second connection position (2b) for mounting on a heliostat; The input shaft (3) is fixedly connected to a worm (3a) meshing with the worm wheel (2a); it is rotatably connected to the first connection part (1) around a horizontal axis; and its connection position at the first connection part (1) can be adjusted along its own radial direction.

2. A heliostat reducer according to claim 1, characterized in that: The first connecting portion (1) is fixedly connected to a mounting block (1C) at two third connecting positions (1b) corresponding to the input shaft (3); the mounting block (1C) can be adjusted around a horizontal first axis at a fixed position of the first connecting portion (1); the mounting block (1C) is installed with a first bearing (1d) for mounting the input shaft (3); the axis of the input shaft (3) is eccentric to the first axis.

3. The heliostat reducer according to claim 1, characterized in that: A second bearing (2a1) for rotational connection is arranged between a portion of the worm wheel (2a) close to the first connection position (1a) and the first connection portion (1); and a plurality of balls (2a2) for rotational connection are arranged between a portion of the worm wheel (2a) close to the second connection position (2b) and the first connection portion (1).

4. The heliostat reducer according to claim 1, characterized in that: The worm (3a) is a ZC worm or an enveloping worm.

5. The heliostat reducer according to claim 1, characterized in that: The first connection point (1a) and / or the second connection point (2b) is a flange.

6. A heliostat, characterized in that: include: Column (4); A third connecting portion (5) is located above the column (4); The heliostat reducer according to any one of claims 1 to 5 is located between the column (4) and the third connecting portion (5); the first connecting position (1a) and the second connecting position (2b) are fixedly connected to the third connecting portion (5) and the column (4), respectively; The motor (6) is fixedly connected to the first connecting part (1); a coupling part (6a) is provided between the output shaft and the input shaft (3); and is used to drive the third connecting part (5) to rotate relative to the column (4); A mounting frame (7) hinged to the third connecting portion (5) around a horizontal axis; A plurality of plane mirrors (8) fixedly connected to the mounting frame (7); An electric cylinder (9) is used to drive the mounting frame (7) to swing relative to the third connecting portion (5).

7. A heliostat according to claim 6, characterized in that: The coupling part (6a) is a planetary gear box.

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