High-protection relay for street lamp

Abstract

The invention discloses a high protection relay for a street lamp, and belongs to the technical field of circuit protection equipment, the high protection relay comprises a ventilation and heat dissipation mechanism, the ventilation and heat dissipation mechanism comprises a shell fixed on a base, the shell is internally provided with a concentric-square-shaped pipe, and the two ends of the concentric-square-shaped pipe are connected with the inner wall of the shell through first telescopic pipes; one end of the first telescopic pipe extends to the air pump, second telescopic pipes are movably connected to the centers of the two ends of the concentric-square-shaped pipe, and first air holes matched with the concentric-square-shaped pipe are formed in the concentric-square-shaped pipe; the two ends of the outer wall of the shell are each provided with a rotating handle, and one end of a movable shaft on each rotating handle extends to the lead screw shaft. According to the invention, the technical problems that in the frequent power-on and power-off process of the relay, more heat is accumulated and is not easy to discharge, and the working safety of equipment is influenced because no good heat dissipation mechanism is arranged in the relay can be solved.

Description

Technical Field

[0001] This invention belongs to the technical field of circuit protection equipment, specifically relating to a high-protection relay for streetlights. Background Technology

[0002] A relay is an electrical control device that causes a predetermined step change in the controlled variable in the electrical output circuit when the input quantity changes to a specified value. It establishes an interactive relationship between the control system and the controlled system. Commonly used in automated control circuits, it essentially functions as an "automatic switch" that uses a small current to control a large current. Therefore, it plays roles in automatic adjustment, safety protection, and circuit switching within circuits.

[0003] A relay is an electrical control device that can be given a specified input quantity and held for a sufficient time to cause a predetermined step change in the controlled quantity in an electrical output circuit. When the input quantity drops to a certain level and is held for a sufficient time, it returns to the initial state. The key components of a relay include an electromagnet, an armature, and a spring; its working principle is that when the electromagnet is energized, it attracts the armature to close the working circuit, and when the power is off, the spring resets and breaks the circuit.

[0004] In a street light control system, the main function of a relay is to convert the signals from the street light controller into actions that disconnect or connect the street light circuit. When a sensor detects a change in the external environmental signal, it sends a control signal to the street light controller, which then uses the relay to disconnect or connect the power supply to the street light, thus controlling the street light's on / off state.

[0005] When large relays operate outdoors, they usually require an external enclosure for protection. However, when outdoor temperatures are high, especially in summer, the frequent energizing and closing of the relays can cause a significant amount of heat to accumulate, which is difficult to dissipate. Furthermore, relays typically lack adequate internal heat dissipation mechanisms, which can affect the safety of the equipment. In addition, relays often lack good internal buffer components, making them susceptible to external vibrations that can easily affect the stability of the internal structural connections, further reducing the stability of the equipment's operation. Summary of the Invention

[0006] The purpose of this invention is to provide a high-protection relay for streetlights to solve the technical problem that heat accumulates and is difficult to dissipate during the frequent energizing and closing of the relay, and that the relay usually does not have a good heat dissipation mechanism, which affects the safety of the equipment operation.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A high-protection relay for streetlights includes:

[0009] A ventilation and heat dissipation mechanism includes a housing fixed on a base. The housing has a U-shaped tube inside. Both ends of the U-shaped tube are connected to the inner wall of the housing through a first telescopic tube. One end of the first telescopic tube extends to an air pump. A second telescopic tube is movably connected to the center of both ends of the U-shaped tube. A first air hole adapted to the U-shaped tube is opened on the U-shaped tube.

[0010] Both ends of the outer wall of the housing are equipped with rotating handles. One end of the movable shaft on the rotating handle extends to the lead screw shaft. The outer wall edge of the lead screw shaft is provided with a rolling groove placed on the second telescopic tube. A first slider is screw-driven on the lead screw shaft. One end of the first slider is fixed to the side wall of the housing by a telescopic rod, and the other end is connected to the second slider by a swing rod. The second slider is fixed on both sides of the U-shaped tube and is symmetrically arranged with respect to the center of the housing.

[0011] Furthermore, both sides of the swing rod are fixedly connected to the first and second sliders. The bottom of the second telescopic tube is fixed to the bottom of the inner wall of the housing by a positioning post. One side of the first slider is fixed to the bidirectional telescopic tube by a bending rod. A second air hole is provided at the movable end of the center of the bidirectional telescopic tube, and both ends of the bidirectional telescopic tube are closed design structures.

[0012] Furthermore, an electromagnet is installed on the support plate between the U-shaped tubes. The electromagnet moves against the armature above it. One end of the armature is rotatably connected to the side plate, and the bottom of the armature is connected to the support plate through a first spring. The wiring terminal on the inner wall of the housing is placed directly above the armature and remains in a moving contact and attraction.

[0013] Furthermore, it also includes a buffer adjustment mechanism, which includes an elastic airbag fixed to the bottom of the support plate. Both ends of the elastic airbag are connected to a first sleeve through conduits. The bottom of the inner wall of the first sleeve is connected to a first push rod through a second spring. The first push rod is connected to a sliding groove along the height direction of the side wall of the first sleeve.

[0014] Furthermore, the outer wall edge of the first sleeve is provided with a sealing ring connected to the first push rod, and an air cavity is formed together between the first push rod, the inner wall of the first sleeve, and the air hole of the guide tube.

[0015] Furthermore, a first gear plate extending into the interior of the second sleeve is fixedly connected to the outer wall of the elastic airbag via a crossbeam. The outer wall of the first gear plate is driven by a rotating gear to move a second gear plate in the opposite direction. The extended end of the top of the second gear plate is fixed to the second push rod, and a strip groove is connected to the outer wall of the crossbeam along the height direction of the second sleeve.

[0016] Furthermore, an elastic pad, made of resin or sponge, is installed on the top of the second push rod by adhesive fixation. Guide grooves are connected to both the first gear plate and the second gear plate along the height direction of the inner wall of the second sleeve. The first rotating shaft on the rotating gear and the second rotating shaft inside the cover are connected by a conveyor belt. One end of the conveyor belt passes through the second sleeve and extends into the inside of the cover. One end of the second rotating shaft is connected to the inner wall of the cover by a bearing, and the other end is installed on a turntable. The outer edge of the turntable is provided with a rotating groove placed on the side wall of the cover.

[0017] Furthermore, the outer wall of the turntable is provided with annularly arranged arc-shaped holes, the outer wall of the arc-shaped holes movably abuts against the rolling ball, the rolling ball movably fits into the arc-shaped groove of the panel, and the panel and the inner wall of the cover are connected by a third spring, and the rolling ball is connected to the annularly distributed arc-shaped holes in a size-adapted manner.

[0018] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0019] (1) In this invention, in order to adapt to different heat dissipation effects, the contact area between the ventilation holes and heat inside the housing can be adaptively changed. During the start-up process of the air pump, the airflow can be effectively discharged through the first air hole on the loop tube, thereby achieving the corresponding heat dissipation effect. In addition, by rotating the handles at both ends at the same time, the first slider moves back and forth on the lead screw shaft. When the first slider moves against the center of the housing, the movable end on the bidirectional telescopic tube moves towards the closed end, and the number of second air holes on the bidirectional telescopic tube increases. At the same time, with the help of the rotation connection of the swing rod, the loop tubes at both ends can be moved outward to further expand the number of first air holes. During the reverse movement of the first slider, the number of first and second air holes can be reduced. This can adaptively change the heat dissipation area inside the housing. In addition, the first and second air holes are set vertically, which can effectively contact the heat inside the housing in all directions. Moreover, the setting of the first telescopic tube on the loop tube can not only ensure the normal delivery of gas, but also allow the loop tube to move normally on the second telescopic tube, effectively ensuring the stability of the equipment operation. The structure is reasonable, the heat dissipation effect is good, and the applicability is strong.

[0020] (2) In this invention, when the electrical components are subjected to vertical vibration, the elastic airbag compresses downward, which not only rushes the gas into the air chamber inside the first sleeve, but also transmits the displacement force to the crossbeam according to the deformation of the elastic airbag. As the gas rushes into the air chamber, the pressure increases, causing the first push rod to move upward. By providing a reaction force, the impact force brought by the support plate is reduced. In addition, during the downward movement of the crossbeam, in conjunction with the gear meshing transmission, the second push rod on the second gear plate can be driven to move upward, which also reduces the impact by providing a reaction force. Moreover, the force brought by the support plate will be converted into the rotational motion of the rotating gear, and in conjunction with the transmission of the conveyor belt, it will be converted into the rotational motion of the turntable. Since the turntable is provided with an arc-shaped hole, the rolling ball on the third spring, during the process of limiting and resisting it, not only reduces the impact force through the back-and-forth movement of the resisting action, but also ensures the normal rotation of the turntable. The impact is reduced through a slow and stable resisting process until the impact force is eliminated, thereby effectively ensuring the safety of the equipment and improving the service life of the device.

[0021] (3) In this invention, the buffer adjustment component is placed at the bottom of the electrical component and the heat dissipation mechanism is placed around the electrical component. While effectively dissipating heat from the equipment, it can also play a good buffer adjustment role. The structure is stable and avoids interference of the transmission component movement. It has strong functionality. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of a high-protection relay for streetlights according to the present invention. Figure 1 ;

[0024] Figure 2 This is a schematic diagram of the structure of a high-protection relay for streetlights according to the present invention. Figure 2 ;

[0025] Figure 3 This is a schematic diagram of the interior of the casing of the present invention. Figure 1 ;

[0026] Figure 4 This is a schematic diagram of the interior of the casing of the present invention. Figure 2 ;

[0027] Figure 5 This is a front view of the interior of the housing of the present invention;

[0028] Figure 6 This is the present invention. Figure 3 Enlarged view of point A;

[0029] Figure 7 This is a schematic diagram of the structure of the first sleeve of the present invention;

[0030] Figure 8 This is a schematic diagram of the structure of the second sleeve of the present invention;

[0031] Figure 9 This is a schematic diagram showing the connection between the turntable and the rolling ball of the present invention.

[0032] Reference numerals: 1. Ventilation and heat dissipation mechanism; 2. Housing; 3. U-shaped tube; 4. First telescopic tube; 5. Air pump; 6. Second telescopic tube; 7. First air vent; 8. Rotary handle; 9. Movable shaft; 10. Lead screw shaft; 11. First slider; 12. Telescopic rod; 13. Swing rod; 14. Second slider; 15. Positioning pin; 16. Bidirectional telescopic tube; 17. Second air vent; 18. Support plate; 19. Electromagnet; 20. Armature; 21. First 21. Spring; 22. Buffer adjustment mechanism; 23. Elastic airbag; 24. First sleeve; 25. Second spring; 26. First push rod; 27. Second sleeve; 28. First gear plate; 29. ​​Rotating gear; 30. Second gear plate; 31. Second push rod; 32. First rotating shaft; 33. Cover; 34. Second rotating shaft; 35. Conveyor belt; 36. Turntable; 37. Arc-shaped hole; 38. Ball; 39. Panel; 40. Third spring. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Reference manual attached Figure 1 - Appendix Figure 9 As shown, a high-protection relay for streetlights includes:

[0035] Ventilation and heat dissipation mechanism 1 includes a housing 2 fixed on a base. The housing 2 has a U-shaped tube 3 inside. Both ends of the U-shaped tube 3 are connected to the inner wall of the housing 2 through a first telescopic tube 4. One end of the first telescopic tube 4 extends to the air pump 5. The center of both ends of the U-shaped tube 3 is movably connected to a second telescopic tube 6. The U-shaped tube 3 has a first air hole 7 that matches it.

[0036] Both ends of the outer wall of the housing 2 are equipped with rotating handles 8. One end of the movable shaft 9 on the rotating handle 8 extends to the lead screw shaft 10. The outer edge of the lead screw shaft 10 is provided with a rolling groove placed on the second telescopic tube 6. The lead screw shaft 10 is screw-driven with a first slider 11. One end of the first slider 11 is fixed to the side wall of the housing 2 by a telescopic rod 12, and the other end is connected to the second slider 14 by a swing rod 13. The second slider 14 is fixed on both sides of the U-shaped tube 3 and is symmetrically arranged with respect to the center of the housing 2.

[0037] Specifically, the positioning post 15 is used to fix the second telescopic tube 6, and the bottom of the positioning post 15 passes through the support plate 18 and extends to the bottom of the inner wall of the housing 2. The support plate 18 is provided with an movable port connected to the positioning post 15, so that the support plate 18 can vibrate freely up and down when subjected to external forces, thereby reducing the impact force through the buffer adjustment mechanism 22.

[0038] To adapt to different heat dissipation effects, the contact area between the ventilation holes and heat inside the housing 2 can be adjusted accordingly. During startup, the air pump 5 can effectively discharge airflow through the first air hole 7 on the loop tube 3, thereby achieving the corresponding heat dissipation effect. In addition, by simultaneously rotating the handles 8 at both ends, the first slider 11 moves back and forth on the lead screw shaft 10. As the first slider 11 moves along the center of the housing 2, the movable end of the bidirectional telescopic tube 16 moves towards the closed end, and the number of second air holes 17 on the bidirectional telescopic tube 16 increases. At the same time, with the help of the rotational connection of the swing rod 13, the two ends can be... The outward movement of the U-shaped tube 3 further increases the number of first air holes 7. During the reverse movement of the first slider 11, the number of first air holes 7 and second air holes 17 can be reduced, thus adapting to the change of the heat dissipation area inside the shell 2. In addition, the first air holes 7 and second air holes 17 are arranged vertically, which can effectively contact the heat inside the shell 2 from all directions. Moreover, the first telescopic tube 4 on the U-shaped tube 3 not only ensures normal gas delivery, but also allows the U-shaped tube 3 to extend and retract normally on the second telescopic tube 6, effectively ensuring the stability of the equipment operation. The structure is reasonably designed, has good heat dissipation effect, and is highly applicable.

[0039] The positioning column 15, together with the first telescopic tube 4, can provide corresponding support to the second telescopic tube 6 connected to the U-shaped tube 3, avoiding the situation of supporting load, allowing the force to be decomposed, and effectively ensuring the safety of equipment use.

[0040] Extending this further, the bidirectional telescopic tube 16 can also be set at the Y-axis end of the U-shaped tube 3, so that it can be set perpendicular to the second telescopic tube 6 in the horizontal direction. Under the action of the spiral drive, the two can simultaneously increase the number of air holes in the X-axis and Y-axis directions, thereby adaptively adjusting the heat dissipation effect by changing the heat dissipation area.

[0041] Both sides of the swing rod 13 are fixedly connected to the first slider 11 and the second slider 14. The bottom of the second telescopic tube 6 is fixed to the bottom of the inner wall of the housing 2 by the positioning post 15. One side of the first slider 11 is fixed to the bidirectional telescopic tube 16 by the bending rod. The movable end of the bidirectional telescopic tube 16 is provided with a second air hole 17, and both ends of the bidirectional telescopic tube 16 are closed design structures.

[0042] An electromagnet 19 is installed on the support plate 18 between the U-shaped tubes 3. The electromagnet 19 moves against the armature 20. One end of the armature 20 is rotatably connected to the side plate, and the bottom of the armature 20 is connected to the support plate 18 through the first spring 21. The wiring terminal on the inner wall of the housing 2 is placed directly above the armature 20 and keeps in a moving contact and attraction.

[0043] A high-protection relay for streetlights also includes a buffer adjustment mechanism 22. The buffer adjustment mechanism 22 includes an elastic airbag 23 fixed to the bottom of a support plate 18. Both ends of the elastic airbag 23 are connected to a first sleeve 24 through conduits. The bottom of the inner wall of the first sleeve 24 is connected to a first push rod 26 through a second spring 25. The first push rod 26 is connected to a sliding groove along the height direction of the side wall of the first sleeve 24.

[0044] When the electrical components are subjected to vertical vibration, the elastic airbag 23 compresses downwards, not only propelling gas into the air chamber within the first sleeve 24, but also transmitting the displacement force based on the deformation of the elastic airbag 23 to the crossbeam. The increased pressure as gas enters the air chamber causes the first push rod 26 to move upwards, reducing the impact force from the support plate 18 by providing a reaction force. Furthermore, during the downward movement of the crossbeam, in conjunction with gear meshing, it can drive the second push rod 31 on the second gear plate 30 to move upwards, also by providing a reaction force. The force applied reduces the impact, and the force from the support plate 18 is converted into the rotational motion of the rotating gear 29. Combined with the transmission action of the conveyor belt 35, it is further converted into the rotational motion of the turntable 36. Since the turntable 36 is provided with an arc-shaped hole 37, the rolling ball 38 on the third spring 40, during its limiting contact with the turntable 36, not only reduces the impact force through back-and-forth contact, but also ensures the normal rotation of the turntable 36. The impact force is reduced through a slow and stable contact process until it is eliminated, thereby effectively ensuring the safety of the equipment and improving the service life of the device.

[0045] The outer edge of the first sleeve 24 is provided with a sealing ring that is connected to the first push rod 26. The first push rod 26, the inner wall of the first sleeve 24 and the air hole of the conduit together form an air cavity. The sealing ring can effectively ensure the sealing effect at the connection of the structural components and prevent gas from leaking out during the flow process, thereby preventing the first push rod 26 from moving up and down by gas pressure.

[0046] In addition, in order to provide better buffer protection for the device, the conduit on the elastic airbag 23 can be added around the support plate 18. When the elastic airbag 23 at the bottom is subjected to compression force, gas will be introduced into the elastic airbags 23 around it, thereby providing effective buffer protection for the electrical components. The surrounding elastic airbags 23 are inflated and protected by introducing gas. The elastic airbags 23 connected by the conduit are obvious conventional technical means to those skilled in the art, so there is no corresponding drawing to show them. However, this does not affect the effective implementation of the technical solution of the present invention.

[0047] A first gear plate 28 extending into the interior of the second sleeve 27 is fixedly connected to the outer wall of the elastic airbag 23 via a crossbeam. The outer wall of the first gear plate 28 is driven by a rotating gear 29 to move a second gear plate 30 in the opposite direction. The extended end of the top of the second gear plate 30 is fixed to the second push rod 31, and a strip groove is connected to the outer wall of the crossbeam along the height direction of the second sleeve 27.

[0048] An elastic pad, made of resin or sponge, is installed on the top of the second push rod 31 by adhesive fixation. Guide grooves are connected to the first gear plate 28 and the second gear plate 30 along the height direction of the inner wall of the second sleeve 27. The first rotating shaft 32 on the rotating gear 29 and the second rotating shaft 34 inside the cover 33 are connected by a conveyor belt 35. One end of the conveyor belt 35 passes through the second sleeve 27 and extends into the inside of the cover 33. One end of the second rotating shaft 34 is connected to the inner wall of the cover 33 by a bearing, and the other end is installed on the turntable 36. The outer edge of the turntable 36 is provided with a rotating groove placed on the side wall of the cover 33.

[0049] The bearing not only provides support for the second rotating shaft 34, but also allows it to rotate freely, thus achieving stable operation. The conveyor belt 35 can transmit force to the second rotating shaft 34 and also serves as a transmission medium between transmission components. It can effectively decompose the force through the movement of the transmission components. At the same time, the rotating groove on the side wall of the cover 33 can effectively prevent the turntable 36 from deviating from its position during rotation.

[0050] The buffer adjustment component is placed at the bottom of the electrical components, and the heat dissipation mechanism is placed around the electrical components. This effectively dissipates heat from the equipment while providing a good buffer adjustment effect. The structure is stable and avoids interference in the movement of transmission components, making it highly functional.

[0051] The outer wall of the turntable 36 has annularly arranged arc-shaped holes 37. The outer wall of the arc-shaped holes 37 movably abuts against the rolling ball 38. The rolling ball 38 movably fits into the arc-shaped groove of the panel 39. The panel 39 and the inner wall of the cover 33 are connected by a third spring 40. The rolling ball 38 is connected to the annularly distributed arc-shaped holes 37 in corresponding size. The impact force can be converted into the rotation of the rolling ball 38 under the action of force transmission. Moreover, during the rotation of the rolling ball 38, the impact force will be decomposed by the action of moving abutting, thereby playing the role of force decomposition.

[0052] The core function of a street light relay is to control the switching of incandescent or LED lights through a light-controlled circuit. Its working principle is based on the linkage between electromagnetic induction and a photoresistor. The light-controlled circuit consists of the following:

[0053] Photoresistor: Senses ambient light intensity; resistance increases in darkness and decreases in light. Transistor: Acts as a switching element, controlling the relay coil's on / off state based on the photoresistor's resistance change. Relay: An electromagnetic switch; when the coil is energized, it generates a magnetic force that attracts the armature 20, closing the contacts to connect the light bulb's power supply.

[0054] The working process is as follows: **Dark Environment Trigger:** The resistance of the photoresistor increases, the transistor conducts, and the relay coil is energized. **Electromagnetic Engagement:** The coil current generates magnetic force, the armature 20 overcomes the counterforce, the spring engages, the normally open contact closes, and the bulb lights up. **Bright Environment Release:** Increased light intensity causes the resistance of the photoresistor to decrease, the transistor cuts off, the coil is de-energized, the armature 20 resets under the action of the spring, the contacts open, and the bulb goes out. The working principle of the street light relay described above is obvious to those skilled in the art and will not be described in detail here.

[0055] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

[0056] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to specific implementations. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A high-protection relay for streetlights, characterized in that, include: Ventilation and heat dissipation mechanism (1), the ventilation and heat dissipation mechanism (1) includes a housing (2) fixed on a base, a U-shaped tube (3) is provided inside the housing (2), both ends of the U-shaped tube (3) are connected to the inner wall of the housing (2) through a first telescopic tube (4), and one end of the first telescopic tube (4) extends to the air pump (5), and a second telescopic tube (6) is movably connected to the center of both ends of the U-shaped tube (3), and a first air hole (7) adapted to it is opened on the U-shaped tube (3); Both ends of the outer wall of the housing (2) are equipped with a rotating handle (8). One end of the movable shaft (9) on the rotating handle (8) extends to the lead screw shaft (10). The outer edge of the lead screw shaft (10) is provided with a rolling groove placed on the second telescopic tube (6). The lead screw shaft (10) is screw-driven with a first slider (11). One end of the first slider (11) is fixed to the side wall of the housing (2) by a telescopic rod (12), and the other end is connected to the second slider (14) by a swing rod (13). The second slider (14) is fixed on both sides of the U-shaped tube (3) and is symmetrically arranged relative to the center of the housing (2).

2. The high-protection relay for streetlights according to claim 1, characterized in that, The swing rod (13) is fixedly connected to the first slider (11) and the second slider (14) on both sides. The bottom of the second telescopic tube (6) is fixed to the bottom of the inner wall of the housing (2) by the positioning post (15). The first slider (11) is fixed to the bidirectional telescopic tube (16) on one side by the bending rod. The bidirectional telescopic tube (16) has a second air hole (17) at the center of the movable end, and both ends of the bidirectional telescopic tube (16) are closed design structures.

3. A high-protection relay for streetlights according to claim 2, characterized in that, An electromagnet (19) is installed on a support plate (18) between the loop tubes (3). The electromagnet (19) moves against the armature (20) above it. One end of the armature (20) is rotatably connected to the side plate, and the bottom of the armature (20) is connected to the support plate (18) through a first spring (21). The wiring terminal on the inner wall of the housing (2) is placed directly above the armature (20) and keeps in a moving contact and attraction.

4. A high-protection relay for streetlights according to claim 1, characterized in that, It also includes a buffer adjustment mechanism (22), which includes an elastic airbag (23) fixed to the bottom of the support plate (18). Both ends of the elastic airbag (23) are connected to a first sleeve (24) through a conduit. The bottom of the inner wall of the first sleeve (24) is connected to a first push rod (26) through a second spring (25). The first push rod (26) is connected to a sliding groove along the height direction of the side wall of the first sleeve (24).

5. A high-protection relay for streetlights according to claim 4, characterized in that, The outer edge of the first sleeve (24) is provided with a sealing ring that is connected to the first push rod (26), and an air cavity is formed between the first push rod (26), the inner wall of the first sleeve (24) and the air hole of the conduit.

6. A high-protection relay for streetlights according to claim 4, characterized in that, The elastic airbag (23) has a first gear plate (28) that extends into the second sleeve (27) and is fixedly connected to the outer wall of the first gear plate (28) by a crossbeam. The outer wall of the first gear plate (28) is connected to a second gear plate (30) that moves in the opposite direction by a rotating gear (29). The extended end of the top of the second gear plate (30) is fixed to the second push rod (31), and the outer wall of the crossbeam is connected to a strip groove along the height direction of the second sleeve (27).

7. A high-protection relay for streetlights according to claim 6, characterized in that, An elastic pad is installed on the top of the second push rod (31) by adhesive fixation. The elastic pad is made of resin or sponge. The first gear plate (28) and the second gear plate (30) are both connected to guide grooves along the height direction of the inner wall of the second sleeve (27). The first rotating shaft (32) on the rotating gear (29) and the second rotating shaft (34) inside the cover (33) are connected by a conveyor belt (35). One end of the conveyor belt (35) passes through the second sleeve (27) and extends into the inside of the cover (33). One end of the second rotating shaft (34) is connected to the inner wall of the cover (33) by a bearing, and the other end is installed on the turntable (36). The outer edge of the turntable (36) is provided with a rotating groove placed on the side wall of the cover (33).

8. A high-protection relay for streetlights according to claim 7, characterized in that, The turntable (36) has annularly arranged arc-shaped holes (37) distributed on its outer wall. The outer wall of the arc-shaped holes (37) moves against the ball (38). The ball (38) moves into the arc groove of the panel (39). The panel (39) and the inner wall of the cover (33) are connected by a third spring (40). The ball (38) is sized to match the arc-shaped holes (37) distributed in the annular arrangement.

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