Support assembly and trough type high temperature solar collector

Abstract

A support assembly and a trough-type solar high-temperature collector relate to the technical field of trough-type solar collector accessories. When the solar altitude angle decreases, the reflector is moved to increase the sunlight reflected on the high-temperature collector tube. The support assembly includes a guide rail, a reflector bracket, a first reflector, a second reflector and a driving mechanism. The reflector bracket is slidably mounted on the front of the guide rail along an arc direction, the first reflector is fixed at the lower end of the reflector bracket, and the second reflector is movably arranged at the upper end of the reflector bracket. The driving mechanism includes a coaxially arranged driving gear and a cam. The driving gear has a driving tooth, and the upper end of the reflector bracket has a driven tooth. After the driving tooth is engaged with the driven tooth, the rotation of the driving gear drives the reflector bracket to move along the guide rail; the outer wall of the cam has a driving surface, and the driving surface contacts and squeezes the back of the second reflector to drive the second reflector to swing. The present invention can adjust the positions of the first and second reflectors when the solar altitude angle changes.

Description

Technical Field

[0001] The invention relates to the technical field of trough type solar thermal collectors, in particular to a supporting assembly and a trough type high temperature solar thermal collector. Background Art

[0002] Trough solar high temperature collector is a highly efficient linear focusing solar thermal collector, mainly composed of reflectors, high temperature collector tubes, and brackets. It has the advantages of mature technology, stable structure, and easy control. Trough solar high temperature collectors can directly convert solar energy into thermal energy, and are widely used in solar thermal power generation, industrial energy saving, heating and cooling, seawater desalination, drying, coal-fired boiler replacement, oil extraction and other energy-saving fields. Trough solar high temperature collectors rely on reflecting sunlight to high temperature collector tubes. Affected by the alternation of seasons, sunrise and sunset, when the light is weak and the solar altitude angle decreases, the sunlight reflected on the high temperature collector tube is greatly reduced, which leads to a decrease in the utilization efficiency of sunlight by the trough solar high temperature collector. Summary of the invention

[0003] The object of the present invention is to provide a support assembly and a trough-type high-temperature solar collector, which can increase the sunlight reflected onto the high-temperature collector tube by moving the reflector when the solar altitude angle decreases.

[0004] The technical solution adopted by the present invention to solve its technical problems is: a supporting assembly, including a guide rail, a reflector bracket, a first reflector, a second reflector and a driving mechanism, wherein the reflector bracket is slidably installed on the front side of the guide rail along an arc direction, the first reflector is fixed to the lower end of the reflector bracket, the lower end of the second reflector is hingedly connected to the upper end of the reflector bracket, an elastic connecting piece is provided between the upper end of the second reflector and the upper end of the reflector bracket, the driving mechanism includes a coaxially arranged driving gear and a cam, the driving gear has driving teeth, the upper end of the reflector bracket has driven teeth, and after the driving teeth are meshed with the driven teeth, the reflector bracket is driven to move along the guide rail through the rotation of the driving gear; the outer wall of the cam has a driving surface, and during the rotation of the cam, the driving surface contacts and squeezes the back side of the second reflector so that the upper end of the second reflector swings toward the side of the first reflector.

[0005] Furthermore, the driving tooth is a section continuously arranged on the driving gear, the central angle corresponding to the arc occupied by the driving tooth is less than 360 degrees, and the cam is located at a circumferential position on the driving gear where no driving tooth is arranged.

[0006] Furthermore, the elastic connecting member is a tensioning spring, the reflector bracket has a spring seat, the back of the second reflector has a connecting ear plate, one end of the tensioning spring is fixedly connected to the spring seat, and the other end of the tensioning spring is fixedly connected to the connecting ear plate.

[0007] Furthermore, the guide rail and the reflector bracket are both arc-shaped structures, the side wall of the reflector bracket has a sliding bar, the guide rail has a sliding groove slidably connected to the sliding bar, the front side of the guide rail has a long groove, and the reflector bracket is located in the long groove.

[0008] Furthermore, it also includes a locking mechanism, which includes a locking pin, an active unlocking gear, a driven unlocking gear and an unlocking motor, the unlocking motor is fixed on a guide rail, the active unlocking gear is fixed on an output end of the unlocking motor, the driven unlocking gear is rotatably mounted on the guide rail, the locking pin and the driven unlocking gear are coaxially arranged, and the reflector bracket has a plurality of evenly arranged locking grooves; a torsion spring is provided between the driven unlocking gear and the guide rail, the active unlocking gear has a first unlocking tooth that is continuously arranged, and the driven unlocking gear has a second unlocking tooth that is continuously arranged; when the reflector bracket moves from bottom to top, the reflector bracket squeezes the locking pin out of the locking groove, the torsion spring acts to make the locking pin extend into the locking groove again, and the locking pin acts to prevent the reflector bracket from moving from top to bottom; during the rotation of the active unlocking gear, after the first unlocking tooth is meshed with the second unlocking tooth, the driven unlocking gear rotates to make the locking pin move out of the locking groove.

[0009] The present invention also provides a trough-type solar high-temperature collector, comprising a support frame, a high-temperature heat collection tube, a support assembly and a transmission mechanism, wherein the back side of the guide rail of the support assembly is fixedly connected to the top of the support frame, the support frame is provided with a drive motor, and the transmission mechanism is located between the output end of the drive motor and the drive gear of the support assembly for transmitting power, the high-temperature heat collection tube is fixed to the upper end of the heat collection tube bracket, and the lower end of the heat collection tube bracket is fixedly connected to the reflector bracket.

[0010] Furthermore, the transmission mechanism includes a driving sprocket fixed to the output end of the driving motor, a driven sprocket coaxially arranged with the driving gear, and a guide sprocket rotatably mounted on the support frame, and a chain is provided between the driving sprocket, the driven sprocket and the guide sprocket.

[0011] Furthermore, the transmission mechanism also includes a tensioning sprocket and a sprocket mounting member, the sprocket mounting member includes a fixed part, a movable part and a pre-tensioning member, the fixed part is fixed on the support frame, the movable part is movably connected to the fixed part, the pre-tensioning member is arranged between the fixed part and the movable part, and the tensioning sprocket is rotatably mounted on the movable part.

[0012] Further, the fixed part is a fixed rod, the movable part is a movable rod, one end of the movable rod is slidably arranged in the fixed rod, the other end of the movable rod has a sprocket ear plate, the tensioning sprocket is rotatably mounted on the sprocket ear plate, and the preload member is a tensioning spring arranged between the fixed rod and the sprocket ear plate.

[0013] Furthermore, the back of the support frame has a back casing, and the left and right sides of the support frame are provided with side casings.

[0014] The beneficial effects of the present invention are as follows: the present invention realizes a sliding connection between the first and second reflectors and the guide rails through the setting of the reflector bracket, drives the reflector bracket to move along the guide rails through the setting of the driving mechanism, and then adjusts the positions of the first and second reflectors according to the change of the solar altitude angle, so that the sunlight can be reflected by the first and second reflectors and irradiated on the high-temperature collector tube as much as possible, thereby ensuring the utilization rate of sunlight. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a front view of the trough type high temperature solar collector of the present invention;

[0016] Figure 2 It is a schematic diagram of the trough type high temperature solar thermal collector of the present invention after removing the back casing and the side casing;

[0017] Figure 3 One of the assembly drawings of the guide rail, the reflector bracket, the first reflector, the second reflector and the driving mechanism;

[0018] Figure 4 The second assembly drawing of the guide rail, the reflector bracket, the first reflector, the second reflector and the driving mechanism;

[0019] Figure 5 Assembly drawings of the drive mechanism and transmission mechanism;

[0020] Figure 6 for Figure 4 A local enlarged view of point A in FIG.

[0021] Figure 7 is a schematic diagram of the second reflector moving;

[0022] Figure 8 is a schematic diagram of the second reflector moving to the extreme position and then swinging;

[0023] Fig. 9 It is a schematic diagram of the assembly of the guide rail, the reflector bracket, the second reflector, the first reflector and the locking mechanism;

[0024] Fig.10 for Fig. 9 A local enlarged view of point B in FIG.

[0025] Fig.11 The schematic diagram is a mirror bracket moving the locking pin clockwise on the guide rail to swing out of the way;

[0026] Fig.12 It is a position relationship diagram of the active unlocking gear, the driven unlocking gear and the locking pin before unlocking;

[0027] Fig.13 A positional relationship diagram of the active unlocking gear, the driven unlocking gear and the locking pin when unlocking;

[0028] In the figure: 1 support frame, 11 base, 12 anchor bolt, 13 back casing, 14 side casing, 2 guide rail, 21 first groove, 22 second groove, 3 high temperature heat collecting tube, 31 heat collecting tube bracket, 4 first reflector, 4 'second reflector, 41 reflector bracket, 411 spring groove, 412 through hole, 413 slide bar, 42 tension spring, 421 spring seat, 43 connecting ear plate, 44 locking groove, 45 driven tooth, 5 driving gear, 51 gear ear plate, 52 driving gear, 53 chain, 54 driving sprocket, 55 tensioning sprocket, 551 sprocket ear plate, 552 movable rod, 553 tensioning spring, 56 guide sprocket, 57 driving motor, 58 fixing rod, 59 driven sprocket, 6 cam, 61 driving surface, 62 synchronous wheel, 7 unlocking motor, 71 active unlocking gear, 72 driven unlocking gear, 73 locking pin, 74 first unlocking tooth, 75 second unlocking tooth. DETAILED DESCRIPTION

[0029] like Figures 1 to 13 As shown, the support assembly of the present invention includes a guide rail 2, a reflector bracket 41, a first reflector 4, a second reflector 4' and a driving mechanism, and the trough type solar high temperature collector includes a support frame 1, a high temperature collector tube 3, a support assembly and a transmission mechanism. The present invention is described in detail below in conjunction with the accompanying drawings.

[0030] like Figures 1 to 4 As shown, the support assembly includes a guide rail 2, a reflector bracket 41, a first reflector 4, a second reflector 4′ and a driving mechanism. The reflector bracket 41 is an arc-shaped structure. The reflector bracket 41 is slidably mounted on the front of the guide rail 2 along the arc direction. The guide rail 2 is also an arc-shaped structure. The first reflector 4 is fixed to the lower end of the reflector bracket 41. The lower end of the second reflector 4′ is hinged to the upper end of the reflector bracket 41. An elastic connector is provided between the upper end of the second reflector 4′ and the upper end of the reflector bracket 41. Specifically, the elastic connector is a tension spring 42. The reflector bracket 41 has a spring slot 411. The spring slot 411 has a spring seat 421, as shown in FIG. Figure 6 As shown, the back of the second reflector 4' has a connecting ear plate 43, one end of the tension spring 42 is fixedly connected to the spring seat 421, and the other end of the tension spring 42 is fixedly connected to the connecting ear plate 43. The first reflector 4 is located below the second reflector 4', and the first and second reflectors are both arranged on a reflector bracket 41, which is slidably arranged on the guide rail 2, so by driving the reflector bracket 41 to move on the guide rail 2, the positions of the first and second reflectors can be adjusted.

[0031] To drive the movement of the reflector bracket 41, as Figure 3 , Figure 4 As shown, the driving mechanism includes a coaxially arranged driving gear 5 and a cam 6. The driving gear 5 has a driving tooth 52, and the upper end of the reflector bracket 41 has a driven tooth 45. After the driving tooth 52 is meshed with the driven tooth 45, the reflector bracket 41 is driven to move along the guide rail 2 through the rotation of the driving gear 5. The outer wall of the cam 6 has a driving surface 61. Along the length direction of the driving surface 61, the distances from different points on the driving surface 61 to the center of the cam 6 are different and gradually increase. During the rotation of the cam 6, the driving surface 61 contacts and squeezes the back of the second reflector 4' so that the upper end of the second reflector 4' swings toward the first reflector 4. And the point on the driving surface 61 that is farther away from the center of the cam 6 contacts the second reflector 4', and the greater the swing angle of the second reflector 4'. In order to realize the installation of the driving gear 5, a gear ear plate 51 is provided on the back of the guide rail 2, and the driving gear 5 is rotatably mounted on the gear ear plate 51. When the driving gear 5 rotates, the driving teeth 52 mesh with the driven teeth 45, and the driving gear 5 rotates to drag the reflector bracket 41 along the guide rail 2, and the moving track is an arc, the center of which is the center of the guide rail and also the center of the reflector bracket 41. Figure 7 As shown, when the solar altitude angle decreases, the reflector bracket 41 can be driven to move upward by the driving gear 5, thereby causing the first and second reflectors to move upward. At this time, the angle of sunlight shining on the first and second reflectors is relatively positive, thereby ensuring the amount of sunlight reflected onto the high-temperature collector tube, that is, the reflected light intensity.

[0032] The driving teeth 52 on the driving gear 5 can be arranged in a full circle. When the cam 6 contacts the back of the second reflector 4', the driving teeth 52 still keep meshing with the driven teeth 45 on the reflector bracket 41. At this time, during the upward movement of the reflector bracket 41, the second reflector 4' swings around the hinge point with the reflector bracket 41. Figure 2 , Figure 3 and Figure 5 As shown, the driving teeth 52 can also be a section continuously arranged on the driving gear 5, the central angle of the arc occupied by the driving teeth 52 is less than 360 degrees, and the cam 6 is located at a circumferential position on the driving gear 5 where the driving teeth 52 are not arranged. Figure 4 As shown, in order to realize the coaxial arrangement of the cam 6 and the driving gear 5, a synchronous wheel 62 is provided on the cam 6. The synchronous wheel 62 is coaxially arranged with the driving gear 5. When the driving gear 5 rotates, the synchronous wheel 62 is driven to rotate, thereby driving the cam 6 to rotate.

[0033] To achieve the sliding connection between the reflector bracket 41 and the guide rail 2, as shown in FIG. Figure 7As shown, the side wall of the reflector bracket 41 has a slide bar 413, the guide rail 2 has a slide groove slidably connected to the slide bar 412, the front of the guide rail 2 has a long groove, and the reflector bracket 41 is located in the long groove. At this time, the front of the reflector bracket 41 is flush with the front of the guide rail 2.

[0034] Under the premise that the driving teeth 52 on the driving gear 5 are a continuous section, as shown in FIG. Figure 2 , Fig. 9 As shown, a locking mechanism is also included to achieve locking between the reflector bracket 41 and the guide rail 2 to prevent the reflector bracket 41 from sliding downward after moving up relative to the guide rail 2. Fig. 9 , Fig.10 As shown, the locking mechanism includes a locking pin 73, an active unlocking gear 71, a driven unlocking gear 72 and an unlocking motor 7, wherein the unlocking motor 7 is fixed to the guide rail 2, the active unlocking gear 71 is fixed to the output end of the unlocking motor 7, the driven unlocking gear 72 is rotatably mounted on the guide rail 7, the locking pin 73 is coaxially arranged with the driven unlocking gear 72 and the locking pin 73 is arranged on the end face of the driven unlocking gear 72, and the reflector bracket 41 has a plurality of evenly arranged locking grooves 44. A torsion spring is arranged between the driven unlocking gear 72 and the guide rail 2, such as Fig.12 As shown, the active unlocking gear 71 has first unlocking teeth 74 arranged continuously, and the driven unlocking gear 72 has second unlocking teeth 75 arranged continuously. Fig.11 As shown, the reflector bracket 41 squeezes the locking pin 73 to move out of the locking groove 44. When the locking pin 73 is aligned with the next adjacent locking groove 44, the torsion spring acts to make the locking pin 73 extend into the locking groove 44 again, and the locking pin 73 acts to prevent the reflector bracket 41 from moving from top to bottom. When the locking pin 73 extends into the locking groove 44, the reflector bracket 41 cannot move from top to bottom. Fig.13 As shown, after the first unlocking tooth 74 is meshed with the second unlocking tooth 75, the driven unlocking gear 72 rotates to rotate the locking pin 73 until the locking pin 73 moves out of the locking groove 44. At this time, the locking effect of the locking pin 73 on the reflector bracket 41 is released, that is, the reflector bracket 41 is unlocked. Fig.12 As shown, the locking pin 73 extends into the locking groove 44, and when the active unlocking gear 71 is in the initial position, the first unlocking tooth 74 on the active unlocking gear 71 is separated from the second unlocking tooth 75 on the driven unlocking gear 72, and there is a certain distance, so that the first unlocking tooth 74 will mesh with the second unlocking tooth 75 only after the active unlocking gear 71 rotates a certain angle. Fig.11As shown, when the reflector bracket 41 moves from bottom to top and squeezes the locking pin 73 to swing counterclockwise, the first unlocking tooth 74 will not mesh with the second unlocking tooth 75, and thus will not affect the rotation of the driven unlocking gear 73. When the reflector bracket 41 moves from bottom to top, the driving tooth 52 separates from the driven tooth 45, and the reflector bracket 41 moves from bottom to top to the maximum stroke. Thereafter, when the driving gear 5 continues to rotate, the reflector bracket 41 and the guide rail 2 are kept relatively fixed under the action of the locking mechanism. Figure 8 As shown, as the driving gear 5 continues to rotate, the cam 6 begins to contact the back of the second reflector 4', squeezing the second reflector 4' to swing around the hinge point with the reflector bracket 41. At this time, the distance between the second reflector 4' and the high-temperature heat collecting tube 3 is reduced, which is conducive to reflecting more reflected light onto the high-temperature heat collecting tube 3.

[0035] Based on the support assembly, the present invention proposes a trough-type high-temperature solar collector, such as Figure 1 , Figure 2 As shown, the trough type solar high temperature collector includes a support frame 1, a high temperature heat collecting tube 3, a support assembly and a transmission mechanism. The back of the guide rail 2 of the support assembly is fixedly connected to the top of the support frame 1. The bottom of the support frame 1 has a base 11, and the base 11 is provided with anchor bolts 12. The base 11 is connected to the foundation through the anchor bolts 12. The support frame 1 has a driving motor 57, and the transmission mechanism is located between the output end of the driving motor 57 and the driving gear 5 of the support assembly for transmitting power. Figure 2 , Figure 5 As shown, the transmission mechanism includes a driving sprocket 54 fixed to the output end of the driving motor 57, a driven sprocket 59 coaxially arranged with the driving gear 57, and a guide sprocket 56 rotatably mounted on the support frame 1, and a chain 53 is provided between the driving sprocket 54, the driven sprocket 59 and the guide sprocket 56. After the driving sprocket 54, the driven sprocket 59 and the guide sprocket 56 are connected together by the chain 53, the rotational motion output by the driving motor 57 is transmitted to the driving gear 5 through the transmission mechanism.

[0036] In order to achieve the tensioning of the chain 53, after the driving motor 57 is started, the driving wheel 5 rotates simultaneously with the driving sprocket 54, and the transmission mechanism also includes a tensioning sprocket 55 and a sprocket mounting member, and the sprocket mounting member includes a fixed part, a movable part and a pre-tightening member, the fixed part is fixed on the support frame 1, the movable part is movably connected to the fixed part, the pre-tightening member is arranged between the fixed part and the movable part, and the tensioning sprocket 55 is rotatably mounted on the movable part. As an implementation method, Figure 5As shown, the fixed part is a fixed rod 58, and the movable part is a movable rod 552. One end of the movable rod 552 is slidably arranged in the fixed rod 58, and the other end of the movable rod 552 has a sprocket ear plate 551. The tensioning sprocket 55 is rotatably mounted on the sprocket ear plate 551. The pre-tightening member is a tensioning spring 553 arranged between the fixed rod 58 and the sprocket ear plate 551. In the natural state, the tensioning spring 553 is compressed to ensure that the chain 53 is always in a tensioned state. The sliding direction between the movable rod 552 and the fixed rod 58 is oblique.

[0037] like Figure 3 As shown, the high temperature heat collecting tube 3 is fixed to the upper end of the heat collecting tube bracket 31, and the lower end of the heat collecting tube bracket 31 is fixedly connected to the reflector bracket 41. The heat collecting tube bracket 31 is located between the first reflector 4 and the second reflector 4', so that the sunlight reflected by the first and second reflectors is reflected on the high temperature heat collecting tube 3 as much as possible. In order to protect the drive motor and the transmission mechanism, as shown in FIG. Figure 1 As shown, the back of the support frame 1 is provided with a back casing 13 , and the left and right sides of the support frame 1 are provided with side casings 14 .

[0038] In order to make the driving teeth 52 on the driving gear 5 mesh with the driven teeth 45 on the reflector bracket 41, as shown in FIG. Figure 3 As shown, the upper end of the guide rail 2 is provided with a first groove 21, a portion of the driving gear 5 extends into the first groove 21, and the driven gear 45 is also located in the first groove 21. Figure 4 As shown, a second groove 22 is further provided at the upper end of the guide rail 2, and a through hole 412 is provided on the reflector bracket 41. The cam 6 enters the second groove 22, passes through the through hole 412, and contacts the back of the second reflector 4'. When the reflector bracket 41 moves from bottom to top to the maximum stroke, the through hole 412 is connected to the second groove 22.

[0039] The action of the driving motor 57 and the action of the unlocking motor 7 are realized through program control. Program control of motor action is a prior art and will not be described in detail.

[0040] The present invention realizes the sliding connection between the first and second reflectors and the guide rail by setting a reflector bracket, drives the reflector bracket to move along the guide rail by setting a driving mechanism, and then adjusts the positions of the first and second reflectors according to the change of the solar altitude angle, so that the sunlight can be reflected by the first and second reflectors and irradiate the high-temperature collector tube as much as possible, so as to ensure the utilization rate of sunlight.

Claims

1. A support assembly, characterized in that: The invention comprises a guide rail, a reflector bracket, a first reflector, a second reflector and a driving mechanism, wherein the reflector bracket is slidably installed on the front side of the guide rail along an arc direction, the first reflector is fixed to the lower end of the reflector bracket, the lower end of the second reflector is hingedly connected to the middle part of the reflector bracket, an elastic connecting piece is provided between the upper end of the second reflector and the upper end of the reflector bracket, the driving mechanism comprises a coaxially arranged driving gear and a cam, the driving gear is provided with driving teeth, the upper end of the reflector bracket is provided with driven teeth, after the driving teeth are meshed with the driven teeth, the reflector bracket is driven to move along the guide rail through the rotation of the driving gear; the outer wall of the cam is provided with a driving surface, during the rotation of the cam, the driving surface contacts and squeezes the back side of the second reflector so that the upper end of the second reflector swings toward the side of the first reflector.

2. The support assembly according to claim 1, characterized in that: The driving teeth are a section continuously arranged on the driving gear, the central angle of the arc occupied by the driving teeth is less than 360 degrees, and the cam is located at a circumferential position on the driving gear where no driving teeth are arranged.

3. The support assembly according to claim 1, characterized in that: The elastic connecting member is a tension spring, the reflector bracket is provided with a spring seat, the back of the second reflector is provided with a connecting ear plate, one end of the tension spring is fixedly connected to the spring seat, and the other end of the tension spring is fixedly connected to the connecting ear plate.

4. The support assembly according to claim 1, characterized in that: The guide rail and the reflector bracket are both arc-shaped structures. The side wall of the reflector bracket has a sliding bar. The guide rail has a sliding groove slidably connected to the sliding bar. The front side of the guide rail has a long groove, and the reflector bracket is located in the long groove.

5. The support assembly according to claim 1, characterized in that: It also includes a locking mechanism, which includes a locking pin, an active unlocking gear, a driven unlocking gear and an unlocking motor, the unlocking motor is fixed on a guide rail, the active unlocking gear is fixed on an output end of the unlocking motor, the driven unlocking gear is rotatably mounted on the guide rail, the locking pin and the driven unlocking gear are coaxially arranged, and the reflector bracket has a plurality of evenly arranged locking grooves; a torsion spring is provided between the driven unlocking gear and the guide rail, the active unlocking gear has a first unlocking tooth that is continuously arranged, and the driven unlocking gear has a second unlocking tooth that is continuously arranged; when the reflector bracket moves from bottom to top, the reflector bracket squeezes the locking pin to move out of the locking groove, the torsion spring acts to make the locking pin extend into the locking groove again, and the locking pin acts to prevent the reflector bracket from moving from top to bottom; during the rotation of the active unlocking gear, after the first unlocking tooth is meshed with the second unlocking tooth, the driven unlocking gear rotates to make the locking pin move out of the locking groove.

6. A trough-type high-temperature solar thermal collector having a support assembly according to any one of claims 1 to 5, comprising a support frame and a high-temperature thermal collector tube, characterized in that: It also includes a transmission mechanism, the back side of the guide rail of the support assembly is fixedly connected to the top of the support frame, the support frame is provided with a drive motor, the transmission mechanism is located between the output end of the drive motor and the drive gear of the support assembly for transmitting power, the high-temperature heat collecting tube is fixed to the upper end of the heat collecting tube bracket, and the lower end of the heat collecting tube bracket is fixedly connected to the reflector bracket.

7. The trough type high temperature solar thermal collector according to claim 6, characterized in that: The transmission mechanism comprises a driving sprocket fixed to the output end of the driving motor, a driven sprocket coaxially arranged with the driving gear, and a guide sprocket rotatably mounted on the support frame, and a chain is arranged between the driving sprocket, the driven sprocket and the guide sprocket.

8. The trough type high temperature solar thermal collector according to claim 7, characterized in that: The transmission mechanism also includes a tensioning sprocket and a sprocket mounting member, the sprocket mounting member includes a fixed portion, a movable portion and a pre-tensioning member, the fixed portion is fixed on the support frame, the movable portion is movably connected to the fixed portion, the pre-tensioning member is arranged between the fixed portion and the movable portion, and the tensioning sprocket is rotatably mounted on the movable portion.

9. The trough type high temperature solar thermal collector according to claim 8, characterized in that: The fixed part is a fixed rod, the movable part is a movable rod, one end of the movable rod is slidably arranged in the fixed rod, the other end of the movable rod has a sprocket ear plate, the tensioning sprocket is rotatably mounted on the sprocket ear plate, and the preload member is a tensioning spring arranged between the fixed rod and the sprocket ear plate.

10. The trough type high temperature solar thermal collector according to claim 6, characterized in that: The back of the support frame is provided with a back casing, and the left and right sides of the support frame are provided with side casings.

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