Electric push rod of traceable heliostat
By using infrared transmitters and receivers in electric push rods for contactless measurements, combined with electromagnets and other components design, the problem of low return-to-zero accuracy of existing electric push rods is solved, improving the focus accuracy of the heliostat lens and reducing inertia error.
Patent Information
- Application Number
- CN202421718575.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-19
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-07-19
AI Technical Summary
The existing electric push rod limit switch adopts contact type, with limited accuracy. The wear of parts during long-term use leads to an increase in error, and the accuracy of return to zero is not high, which affects the focus accuracy of the heliostat.
Infrared transmitter and infrared receiver are used for contactless measurements. By measuring the ejection distance of the electric push rod, it is determined whether it returns to zero. Combined with the design of electromagnets, damping springs, magnetic suction blocks and brake pads, the impact of inertia on the electric push rod is reduced.
The return accuracy of the electric push rod is improved, the error caused by wear is reduced, the precise positioning of the heliostat is ensured, and the angle adjustment error caused by inertia is reduced.
Smart Images
Figure CN222802800U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of solar power generation, in particular to an electric push rod of a trackable heliostat. Background Art
[0002] In a solar photovoltaic system, a large number of heliostats are usually used to focus the energy of direct solar light onto the collector of the collection tower in a focused manner to maximize the efficiency of solar energy collection. During the use of heliostats, in order to maximize the efficiency of solar energy collection, electric push rods are often used to adjust their angles.
[0003] The limit switch of the existing electric push rod is usually of contact type. The accuracy of this type of limit switch is limited. When used for a long time, wear will occur between the parts, resulting in larger errors, resulting in low zero return accuracy of the electric push rod. Since the distance between the heliostat and the data collection tower is very far, once the zero return accuracy error of the electric push rod is large, the sunlight reflected by the heliostat will have a large deviation. At the same time, the electric push rod is easily affected by inertia during operation, resulting in a certain error in adjustment, which in turn causes the heliostat to be unable to always accurately focus the direct sunlight onto the collector of the data collection tower. Therefore, a trackable electric push rod for the heliostat is proposed to solve the above problems. Utility Model Content
[0004] In order to solve the above technical problems, an electric push rod of a trackable heliostat is provided. The technical solution solves the problem that the limit switch of the existing electric push rod mentioned in the above background technology is usually of contact type, and the accuracy of such limit switch is limited. When used for a long time, wear will occur between the parts, resulting in larger errors, resulting in low zero return accuracy of the electric push rod. Since the distance between the heliostat and the data collection tower is very far, once the zero return accuracy error of the electric push rod is large, the sunlight reflected by the heliostat will have a large deviation. At the same time, the electric push rod is easily affected by inertia during operation, resulting in a certain error in adjustment, which leads to the problem that the heliostat cannot always accurately focus the direct sunlight onto the collector of the data collection tower.
[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:
[0006] The invention discloses an electric push rod of a trackable heliostat, comprising a support column and a mounting seat fixedly connected to one side of the upper end of the support column, wherein the front side of the mounting seat is fixedly connected to a box body, the front right part of the box body is fixedly connected to a cylinder body, the inside of the box body is rotatably connected to a driving gear and a driven gear, the driving gear and the driven gear are meshed with each other, a motor for driving the driving gear to rotate is fixedly installed on the front side of the box body, a screw rod is fixedly connected to the front end of the driven gear, the other end of the screw rod passes through the front end of the box body and the rear end of the cylinder body and extends to the inside of the cylinder body, a positioning plate is fixedly connected to the inner bottom end of the cylinder body, a first mounting groove is provided at the front end of the positioning plate, an infrared transmitter is arranged inside the first mounting groove, a sliding plate is slidably connected to the inside of the cylinder body, the sliding plate is rotatably connected to the outer surface of the screw rod, a second mounting groove is provided at the corresponding position of the rear end of the sliding plate and the first mounting groove, an infrared receiver is arranged inside the second mounting groove.
[0007] Preferably, four evenly distributed limit blocks are fixedly connected to the outer side of the sliding plate.
[0008] Preferably, a guide groove is provided on the inner side of the cylinder body at the position corresponding to the limit block, and the limit block is slidably connected to the inside of the guide groove.
[0009] Preferably, the front end of the sliding plate is fixedly connected with a nut, the nut is threadedly connected to the outer surface of the screw rod, the front end of the nut is fixedly connected with a movable rod, and the movable rod is sleeved on the outer surface of the screw rod.
[0010] Preferably, four evenly distributed sliding grooves are opened on the side of the inner wall of the cylinder body away from the sliding plate, an electromagnet is arranged inside the sliding groove, a damping spring is fixedly connected to the inner side of the electromagnet, a magnetic block is fixedly connected to the other end of the damping spring, and a brake pad is fixedly connected to the inner side of the magnetic block.
[0011] Preferably, a top cover is fixedly connected to the front end of the cylinder body, and a sealing ring is fixedly connected to the inner side of the top cover.
[0012] Preferably, a connecting piece is fixedly connected to the front end of the movable rod.
[0013] Preferably, a heliostat body is provided at the upper end of the support column, and two fixed blocks are fixedly connected to the front and rear sides of the lower end of the heliostat body, a rotating shaft is rotatably connected between the two fixed blocks, the rotating shaft on the front side is fixedly connected to the inner side of the connecting piece, and a telescopic rod is fixedly connected to the side of the upper end of the support column away from the mounting seat, and the other end of the telescopic rod is fixedly connected to the rotating shaft on the rear side.
[0014] Compared with the prior art, the utility model has the following beneficial effects:
[0015] This scheme proposes an electric push rod of a trackable heliostat. An infrared transmitter and an infrared receiver are set to measure the push-out distance of the electric push rod. The receiving end of the infrared receiver is the zero position reference of the movable rod. The measurement results of the infrared transmitter and the infrared receiver can be used to judge whether the electric push rod has returned to zero. Compared with the limit switch, the measurement method of the infrared transmitter and the infrared receiver is non-contact measurement, which can reduce wear during long-term use, thereby ensuring the return-to-zero accuracy of the movable rod and helping to ensure the precise positioning of the heliostat.
[0016] In this solution, an electromagnet, a damping spring, a magnetic block and a brake pad are provided. When the movable rod is extended or retracted, the electromagnet is energized to adsorb the magnetic block, and the magnetic block compresses the damping spring to shrink the brake pad into the slide groove. When the movable rod adjusts the heliostat to the target position, the electromagnet is powered off. At this time, the electromagnet loses its magnetic force. Under the action of the elastic force of the damping spring, the brake pad abuts against the outer surface of the movable rod, thereby reducing the influence of inertia on the electric push rod, thereby reducing the error of the heliostat angle adjustment caused by inertia. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram of the structure of the utility model;
[0018] Figure 2 This is a schematic diagram of the structure inside the box in the utility model;
[0019] Figure 3 This is a schematic diagram of the structure inside the cylinder body of the utility model;
[0020] Figure 4 It is a structural schematic diagram of the positioning plate in the utility model;
[0021] Figure 5 It is a structural schematic diagram of the sliding plate in the utility model;
[0022] Figure 6 It is a structural schematic diagram of the slideway in the utility model;
[0023] Figure 7 It is a structural schematic diagram of the heliostat body in the utility model.
[0024] The numbers in the figure are:
[0025] 1. Mounting base; 2. Box body; 3. Cylinder body; 4. Driving gear; 5. Motor; 6. Driven gear; 7. Screw rod; 8. Positioning plate; 801. First mounting slot; 9. Infrared transmitter; 10. Sliding plate; 1001. Second mounting slot; 11. Infrared receiver; 12. Limit block; 13. Guide slot; 14. Nut; 15. Movable rod; 16. Slide slot; 17. Electromagnet; 18. Damping spring; 19. Magnetic block; 20. Brake pad; 21. Top cover; 22. Sealing ring; 23. Connector; 24. Support column; 25. Fixed block; 26. Heliostat body; 27. Rotating shaft; 28. Telescopic rod. DETAILED DESCRIPTION
[0026] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.
[0027] Reference Figure 1 , Figure 2 and Figure 3 As shown, an electric push rod of a trackable heliostat includes a support column 24 and a mounting base 1 fixedly connected to one side of the upper end of the support column 24, a box body 2 is fixedly connected to the front side of the mounting base 1, a cylinder body 3 is fixedly connected to the front right part of the box body 2, a driving gear 4 and a driven gear 6 are rotatably connected inside the box body 2, the driving gear 4 and the driven gear 6 are meshed with each other, a motor 5 for driving the driving gear 4 to rotate is fixedly installed on the front side of the box body 2, the motor 5 is electrically connected to an external controller, a screw rod 7 is fixedly connected to the front end of the driven gear 6, and the other end of the screw rod 7 passes through the front end of the box body 2 and the rear end of the cylinder body 3 and extends to the inside of the cylinder body 3.
[0028] Reference Figure 3 , Figure 4 and Figure 5 A positioning plate 8 is fixedly connected to the inner bottom end of the cylinder body 3, a first mounting groove 801 is opened at the front end of the positioning plate 8, an infrared transmitter 9 is arranged inside the first mounting groove 801, a sliding plate 10 is slidably connected to the inside of the cylinder body 3, the sliding plate 10 is rotatably connected to the outer surface of the screw rod 7, a second mounting groove 1001 is opened at the rear end of the sliding plate 10 at a position corresponding to the first mounting groove 801, an infrared receiver 11 is arranged inside the second mounting groove 1001, a transmitting end of the infrared transmitter 9 is flush with the notch of the first mounting groove 801, a receiving end of the infrared receiver 11 is flush with the notch of the second mounting groove 1001, and the infrared receiver 11 is electrically connected to an external controller.
[0029] Furthermore, the front end of the sliding plate 10 is fixedly connected with a nut 14, which is threadedly connected to the outer surface of the screw rod 7, the front end of the nut 14 is fixedly connected with a movable rod 15, which is sleeved on the outer surface of the screw rod 7, and the front end of the movable rod 15 is fixedly connected with a connecting piece 23, which is used to connect with the rotating block at the lower end of the heliostat body 26.
[0030] Furthermore, by driving the driving gear 4 to rotate through the motor 5, the driven gear 6 can drive the screw rod 7 to rotate. When the screw rod 7 rotates, the nut 14 will slide along the surface of the screw rod 7, thereby driving the movable rod 15 and the sliding plate 10 to move. The moving distance of the sliding plate 10 can be measured by the infrared transmitter 9 and the infrared receiver 11. Since the movable rod 15 and the sliding plate 10 move at the same time, the moving distance of the sliding plate 10 is the moving distance of the movable rod 15.
[0031] Furthermore, the receiving end of the infrared receiver 11 is the zero position reference of the movable rod 15. The infrared receiver 11 will feed back the measured data to the microprocessor of the controller in real time. The microprocessor will determine whether the movable rod 15 has returned to zero based on the fed-back measurement data. Compared with the limit switch, the measurement method of the infrared transmitter 9 and the infrared receiver 11 is non-contact measurement, which can reduce wear during long-term use, thereby ensuring the zero return accuracy of the movable rod 15, which helps to ensure the precise positioning of the heliostat.
[0032] Furthermore, four evenly distributed limit blocks 12 are fixedly connected to the outer side of the sliding plate 10, and a guide groove 13 is opened at the inner side of the cylinder body 3 and the corresponding position of the limit block 12. The limit block 12 is slidably connected to the inside of the guide groove 13. The limit block 12 can limit the sliding plate 10 to prevent it from rotating with the screw 7. The limit block 12 and the guide groove 13 can guide and limit the movement of the movable rod 15, so that the movement of the movable rod 15 is more stable.
[0033] Reference Figure 3 and Figure 6 As shown, four evenly distributed slide grooves 16 are opened on the side of the inner wall of the cylinder body 3 away from the sliding plate 10, and an electromagnet 17 is arranged inside the slide groove 16. A damping spring 18 is fixedly connected to the inner side of the electromagnet 17, and a magnetic block 19 is fixedly connected to the other end of the damping spring 18. A brake pad 20 is fixedly connected to the inner side of the magnetic block 19.
[0034] Furthermore, the electromagnet 17 is electrically connected to the control circuit, and the switch of the control circuit is controlled by the control unit of the external controller. When the motor 5 drives the driving gear 4 to rotate, the switch of the control circuit is in a closed state. At this time, the electromagnet 17 is energized to adsorb the magnetic block 19, and the magnetic block 19 will compress the damping spring 18 so that the brake pad 20 will shrink into the slide groove 16. When the heliostat is adjusted to the target position, the power supply of the motor 5 is cut off, and the switch of the control circuit will be disconnected. At this time, the electromagnet 17 will lose its magnetic force. Under the action of the elastic force of the damping spring 18, the brake pad 20 will abut against the outer surface of the movable rod 15, thereby reducing the influence of inertia on the electric push rod, thereby reducing the error of the heliostat angle adjustment caused by inertia.
[0035] Reference Figure 1 As shown, a top cover 21 is fixedly connected to the front end of the cylinder body 3 , and a sealing ring 22 is fixedly connected to the inner side of the top cover 21 .
[0036] Reference Figure 7 As shown, a heliostat body 26 is provided at the upper end of the support column 24, and two fixed blocks 25 are fixedly connected to the front and rear sides of the lower end of the heliostat body 26, and a rotating shaft 27 is rotatably connected between the two fixed blocks 25. The front rotating shaft 27 is fixedly connected to the inner side of the connecting member 23, and a telescopic rod 28 is fixedly connected to the side of the upper end of the support column 24 away from the mounting seat 1, and the other end of the telescopic rod 28 is fixedly connected to the rear rotating shaft 27.
[0037] Working principle: When in use, the electric push rod is installed on one side of the upper end of the support column 24 using the mounting seat 1, and then the connecting piece 23 is connected to the rotating shaft 27 at the lower end of the heliostat body 26. When the position of the sun changes, the motor 5 is started by the control unit in the external controller, and the switch of the control circuit is closed at the same time. At this time, the electromagnet 17 is energized to adsorb the magnetic block 19, and the magnetic block 19 will compress the damping spring 18 to make the brake pad 20 shrink into the slide groove 16, and the motor 5 will drive the driving gear 4 to rotate, so that the driven gear 6 drives the screw rod 7 to rotate. When the screw rod 7 rotates, The nut 14 will slide along the surface of the screw rod 7, thereby driving the movable rod 15 and the sliding plate 10 to move. Under the push of the movable rod 15, the heliostat body 26 will rotate, and then the angle of the heliostat body 26 will be adjusted. When the heliostat body 26 is adjusted to a suitable angle, the motor 5 will stop working, and the switch of the control circuit will be disconnected. At this time, the electromagnet 17 will lose its magnetic force. Under the action of the elastic force of the damping spring 18, the brake pad 20 will abut against the outer surface of the movable rod 15, thereby reducing the influence of inertia on the movable rod 15, and further reducing the error of the heliostat angle adjustment caused by inertia.
[0038] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.
Claims
1. An electric push rod for a trackable heliostat, characterized in that: The invention comprises a support column (24) and a mounting seat (1) fixedly connected to one side of the upper end of the support column (24); the front side of the mounting seat (1) is fixedly connected to a box body (2); the front right part of the box body (2) is fixedly connected to a cylinder body (3); the inside of the box body (2) is rotatably connected to a driving gear (4) and a driven gear (6); the driving gear (4) and the driven gear (6) are meshed with each other; the front side of the box body (2) is fixedly installed with a motor (5) for driving the driving gear (4) to rotate; the front end of the driven gear (6) is fixedly connected to a screw rod (7); the other end of the screw rod (7) passes through the front end of the box body (2) and the cylinder body (3); The rear end of the cylinder body (3) extends into the interior of the cylinder body (3); a positioning plate (8) is fixedly connected to the inner bottom end of the cylinder body (3); a first mounting groove (801) is provided at the front end of the positioning plate (8); an infrared transmitter (9) is arranged inside the first mounting groove (801); a sliding plate (10) is slidably connected to the interior of the cylinder body (3); the sliding plate (10) is rotatably connected to the outer surface of the screw rod (7); a second mounting groove (1001) is provided at a position corresponding to the rear end of the sliding plate (10) and the first mounting groove (801); an infrared receiver (11) is arranged inside the second mounting groove (1001).
2. The electric push rod of a trackable heliostat according to claim 1, characterized in that: Four evenly distributed limit blocks (12) are fixedly connected to the outer side of the sliding plate (10).
3. The electric push rod of a trackable heliostat according to claim 1, characterized in that: A guide groove (13) is provided at the position where the inner side of the cylinder body (3) and the limit block (12) are aligned, and the limit block (12) is slidably connected to the inside of the guide groove (13).
4. The electric push rod of a trackable heliostat according to claim 1, characterized in that: The front end of the sliding plate (10) is fixedly connected to a nut (14), the nut (14) is threadedly connected to the outer surface of the screw rod (7), the front end of the nut (14) is fixedly connected to a movable rod (15), and the movable rod (15) is sleeved on the outer surface of the screw rod (7).
5. The electric push rod of the trackable heliostat according to claim 1, characterized in that: Four evenly distributed slide grooves (16) are provided on a side of the inner wall of the cylinder body (3) away from the sliding plate (10), an electromagnet (17) is arranged inside the slide groove (16), a damping spring (18) is fixedly connected to the inner side of the electromagnet (17), a magnetic block (19) is fixedly connected to the other end of the damping spring (18), and a brake pad (20) is fixedly connected to the inner side of the magnetic block (19).
6. The electric push rod of the trackable heliostat according to claim 1, characterized in that: The front end of the cylinder body (3) is fixedly connected to a top cover (21), and the inner side of the top cover (21) is fixedly connected to a sealing ring (22).
7. The electric push rod of a trackable heliostat according to claim 4, characterized in that: The front end of the movable rod (15) is fixedly connected with a connecting piece (23).
8. The electric push rod of a trackable heliostat according to claim 1, characterized in that: A heliostat body (26) is arranged at the upper end of the support column (24); two fixed blocks (25) are fixedly connected to the front and rear sides of the lower end of the heliostat body (26); a rotating shaft (27) is rotatably connected between the two fixed blocks (25); the rotating shaft (27) at the front side is fixedly connected to the inner side of the connecting member (23); a telescopic rod (28) is fixedly connected to the side of the upper end of the support column (24) away from the mounting seat (1); the other end of the telescopic rod (28) is fixedly connected to the rotating shaft (27) at the rear side.