Connecting rod transmission heliostat

Abstract

The present invention relates to the field of solar energy technology and discloses a connecting rod transmission heliostat, comprising a base support, a latitude adjustment device, and a longitude adjustment device. The longitude adjustment device comprises a first rotating motor mounted on an upper portion of the base support and a first rotating member fixed to an output shaft of the first rotating motor; the latitude adjustment device comprises a second rotating motor and a second rotating member fixed to the output shaft of the second rotating motor; the second rotating member is disposed in the middle of the first rotating member and is hingedly connected to the first rotating member; a transverse support rod is provided at the front end of the first rotating member, a lens body is mounted on the transverse support rod, and a connecting rod is further provided, one end of the connecting rod being connected to a connection point between the first rotating member and the transverse support rod, and the other end being connected to a rear end of the second rotating member. The connecting rod is used to solve the defects of existing heliostats, such as complex structure, difficult manufacturing, low transmission precision, and low efficiency.

Description

Technical Field

[0001] The present invention relates to the field of solar energy technology, and in particular to a connecting rod transmission heliostat. Background Art

[0002] A heliostat, also known as a star-fixing mirror, is an optical device that reflects light from the sun or other celestial bodies in a fixed direction. Its function is similar to that of a coelostat, but it utilizes a flat mirror placed in an equatorial arrangement, allowing for declination movement. In the process of solar energy utilization, it is often necessary to reflect sunlight to a specific area or point, allowing for the placement of specific equipment at that point to harness solar energy for lighting, power generation, and other purposes. Heliostats are key components of tower thermal power generation systems and represent a significant portion of a power plant's investment. Their design, structural rationality, and cost effectiveness are crucial to the plant's success.

[0003] Existing heliostat systems, typically employed in the Sun I and II tower power generation systems built in Southern California, feature a flat mirror arrangement resembling a sail. The mirror frame is fixed to a transverse main rotating shaft, which is cantilevered on a single vertical shaft. This allows the force arm length to be approximately zero regardless of elevation or azimuth. Because the mirror resembles a giant sail, it requires both a powerful automatic tracking mechanism and robust infrastructure, resulting in high construction costs.

[0004] In order to facilitate the mass production of solar energy equipment, it is urgent to invent a heliostat with a simple structure, easy manufacturing, small transmission gap, high precision, low cost and high efficiency. Summary of the Invention

[0005] (1) Technical issues to be resolved

[0006] The embodiments of the present invention provide a connecting rod transmission heliostat, which is used to solve the defects of the existing heliostat, such as complex structure, difficult manufacturing, low transmission precision and low efficiency. (2) Summary of the invention

[0008] 18. The swiftly and minutely adjusting device for a wood-planer working table as claimed in claim 15, wherein said linking rod and said adjusting base are pivotally connected to each other with a bolt, and said bolt has a round shank to contact with said linking rod. said linking rod having a round shank and a bolt for contacting with said linking rod. said linking rod having a round shank and a bolt for contacting with said linking rod

[0009] Preferably, a rectangular long slot is provided in the middle of the first rotating member, the second rotating member passes through the rectangular long slot, and the output shaft of the second rotating motor passes through the side wall of the rectangular long slot and the lower end of the second rotating member.

[0010] Preferably, a bent portion is provided in the middle of the second rotating member so that the upper end thereof extends from the side of the lens body.

[0011] Preferably, positioning rings are provided on both sides of the lens body, the transverse support rod passes through the through hole at the front end of the first rotating member and the through hole at the upper end of the connecting rod in sequence, and both ends of the transverse support rod are respectively fixed to the positioning rings.

[0012] Preferably, the base bracket includes two horizontally arranged legs and an inclined support plate, and the first rotating motor is installed at the upper end of the support plate.

[0013] Preferably, the angle between the two legs is θ, then 30°≤θ≤60°.

[0014] Preferably, the first rotating member and the second rotating member are both AC servo motors.

[0015] (3) Beneficial effects

[0016] An embodiment of the present invention provides a connecting rod transmission heliostat, comprising a base bracket, a latitude adjustment device and a longitude adjustment device, wherein the longitude adjustment device comprises a first rotating motor mounted on the upper portion of the base bracket and a first rotating member fixed to the output shaft of the first rotating motor; the latitude adjustment device comprises a second rotating motor and a second rotating member fixed to the output shaft of the second rotating motor; by arranging the first rotating member of the longitude adjustment device, the second rotating member of the latitude adjustment device and the connecting rod to form a certain angular relationship, so that the hinge point of the first rotating member and the second rotating member, the connection point of the first rotating member and the transverse support rod, the first rotating member and the second rotating member are connected to the connecting rod. The connection point between the two rotating members and the connecting rod forms an isosceles right triangle. By leveraging the geometric relationship that the sum of the two base angles of an isosceles triangle equals the external angle of the vertex angle (that is, the external angle of the vertex angle is always twice the base angle), the rotation angle of the first rotating member is always twice the rotation angle of the connecting rod. During operation, the first rotating member is pointed at the target and the base bracket is fixed. The first rotating motor controls the longitude of the first rotating member, while the second rotating motor directly controls the latitude of the second rotating member, so that the light sensor points in the direction of incident sunlight (the light sensor faces the sunlight). At this point, the sunlight reflected by the mirror is directed toward the target. Compared to existing heliostats, this system has the advantages of simple structure, ease of manufacture, small transmission gap, high precision, low cost, and high efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a schematic structural diagram of a connecting rod transmission heliostat from a first viewing angle in Example 1 of the present invention;

[0019] Figure 2 This is a schematic structural diagram of a connecting rod transmission heliostat in Example 1 of the present invention from a second viewing angle.

[0020] Figure 3 This is a schematic diagram of the overall structure of a connecting rod transmission heliostat in Example 2 of the present invention.

[0021] Description of reference numerals:

[0022] 1: base bracket; 21: first rotating member; 22: first rotating motor;

[0023] 31: Second rotating member; 32: Second rotating motor; 4: Horizontal support rod;

[0024] 5: Connecting rod; 6: Light sensor; 7: Rectangular slot. DETAILED DESCRIPTION

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0026] In the description of the embodiments of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "first," "second," and "third" are used to clearly illustrate the numbering of product components and do not represent any substantial distinction. The directions of "up," "down," "left," and "right" are to be referred to as those shown in the accompanying drawings. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on specific circumstances.

[0027] It should be noted that, unless otherwise specified or limited, the term "connected" should be understood in a broad sense, for example, it can mean directly connected or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the embodiments of the invention can be understood by those skilled in the art in specific circumstances.

[0028] Example 1.

[0029] Figure 1 and Figure 2The invention relates to a connecting rod transmission heliostat, comprising a base support 1, a latitude adjustment device and a longitude adjustment device. The longitude adjustment device comprises a first rotating motor 22 mounted on the upper portion of the base support 1 and a first rotating member 21 fixed to the output shaft of the first rotating motor 22; the latitude adjustment device comprises a second rotating motor 32 and a second rotating member 31 fixed to the output shaft of the second rotating motor 32; the second rotating member 31 is arranged in the middle of the first rotating member 21, and the second rotating member 31 is hinged to the first rotating member 21; the front end of the first rotating member 21 is provided with a A transverse support rod 4 is provided, to which the lens body is mounted. A connecting rod 5 is also provided. One end of the connecting rod 5 is connected to the connection point between the first rotating member 21 and the transverse support rod 4, and the other end is connected to the rear end of the second rotating member 31. The distance between the hinge point between the first rotating member 21 and the second rotating member 31 and the connection point between the second rotating member 31 and the connecting rod 5 is d1, and the distance between the hinge point between the first rotating member 21 and the second rotating member 31 and the second rotating member 31 and the transverse support rod 4 is d2, where d1 = d2. A light sensor 6 is also provided at the top of the second rotating member 31. The hinge point between the first rotating member 21 and the second rotating member 31, the connection point between the second rotating member 31 and the connecting rod 5, and the connection point between the first rotating member 21 and the connecting rod 5 form an isosceles triangle. Based on the geometric relationship that the sum of the two base angles of an isosceles triangle is equal to the external angle of the vertex angle, i.e., the external angle of the vertex angle is always twice the base angle, the rotation angle of the first rotating member 21 is always twice the rotation angle of the connecting rod 5.

[0030] The first rotating member 21 is driven to rotate by the first rotating motor 22 to drive the second rotating member 31 to rotate, thereby adjusting the longitude direction of the light sensor 6 located at the top of the second rotating member 31. The second rotating member 31 is driven to rotate by the second rotating motor 32 to adjust the latitude direction of the optical fiber sensor. The light sensor 6 allows the two motors to control the second rotating member 31 to point to the direction of incident sunlight (the light sensor 6 faces the sunlight). At this time, the sunlight reflected by the mirror is towards the target.

[0031] Preferably, a rectangular long slot hole 7 is provided in the middle of the first rotating member 21 , the second rotating member 31 passes through the rectangular long slot hole 7 , and the output shaft of the second rotating motor 32 passes through the side wall of the rectangular long slot hole 7 and the lower end of the second rotating member 31 .

[0032] Preferably, a bent portion is provided in the middle of the second rotating member 31 so that its upper end extends from the side of the lens body. This structure is used to prevent the lens body from blocking the light sensor 6.

[0033] Preferably, positioning rings are provided on both sides of the lens body, the transverse support rod 4 passes through the through hole at the front end of the first rotating member 21 and the through hole at the upper end of the connecting rod 5 in sequence, and both ends of the transverse support rod 4 are respectively fixed to the positioning rings.

[0034] Preferably, the base bracket 1 includes two horizontally arranged legs and an inclined support plate. The first rotating motor 22 is installed at the upper end of the support plate. The angle between the two legs is 60°. The support leg structure of this structure is relatively stable and not prone to tipping.

[0035] Preferably, the first rotating member 21 and the second rotating member 31 are both AC servo motors. AC servo motors achieve closed-loop control of position, speed and torque, overcome the problem of stepping motors losing steps, and are more suitable for such occasions with higher precision requirements.

[0036] Example 2.

[0037] like Figure 3 As shown, the only difference between Example 2 and Example 1 is that the first rotating member 21 is divided into two parts by the rectangular long slot 7, and both parts are respectively connected to the transverse support rod 4. This structure makes the connection between the first rotating member 21 and the transverse support rod 4 more stable and more in line with the principles of mechanical structure.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A connecting rod drive heliostat, comprising a base support, characterized in that: It also includes a latitude adjustment device and a longitude adjustment device, the longitude adjustment device includes a first rotating motor installed on the upper part of the base bracket and a first rotating member fixed to the output shaft of the first rotating motor; the latitude adjustment device includes a second rotating motor and a second rotating member fixed to the output shaft of the second rotating motor; the second rotating member is arranged in the middle of the first rotating member, and the second rotating member is hinged to the first rotating member; a transverse support rod is provided at the front end of the first rotating member, and the lens body is installed on the transverse support rod; a connecting rod is also provided, one end of the connecting rod connects the first rotating member and the transverse support rod The connection point of the support rod, the other end is connected to the tail end of the second rotating member, and the distance from the hinge point of the first rotating member and the second rotating member to the connection point of the second rotating member and the connecting rod is d1, and the distance from the hinge point of the first rotating member and the second rotating member to the second rotating member and the transverse support rod is d2, then d1=d2; a light sensor is also provided at the top of the second rotating member; the base bracket includes two horizontally arranged legs and an inclined support plate, the first rotating motor is installed at the upper end of the support plate, the angle between the two legs is θ, then 30°≤θ≤60°; a bending portion is provided in the middle of the second rotating member, so that its upper end extends from the side of the lens body; positioning rings are provided on both sides of the lens body, and the transverse support rod passes through the through hole at the front end of the first rotating member and the through hole at the upper end of the connecting rod in sequence, and the two ends of the transverse support rod are respectively fixed to the positioning rings.

2. The connecting rod transmission heliostat according to claim 1, characterized in that: A rectangular long slot is provided in the middle of the first rotating member, the second rotating member passes through the rectangular long slot, and the output shaft of the second rotating motor passes through the side wall of the rectangular long slot and the lower end of the second rotating member.

3. The connecting rod transmission heliostat according to claim 1, characterized in that: The first rotating member and the second rotating member are both AC servo motors.

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