Energy-saving LED street lamp convenient to overhaul

Abstract

The invention relates to the technical field of street lamp illumination, in particular to an energy-saving LED street lamp convenient to overhaul, which comprises a lamp pole, a lamp arm, an illumination lamp cap, a photovoltaic panel and a built-in lifting driving assembly, the lifting driving assembly adopts a motor to drive a worm and worm gear pair, and then a ball screw is driven to realize stable lifting of the lamp arm; the worm and gear pair has self-locking performance and is provided with a normally-closed electromagnetic brake for redundant braking, and it is ensured that any position is safely locked; a clutch with a linkage mechanism is arranged between the driving worm and the motor, manual modes can be synchronously switched and braking can be relieved by inserting a crank handle, and power-free emergency operation is achieved; a combined type sealing guide assembly is arranged between the lamp arm and the lamp pole sliding groove, and dynamic sealing and low-resistance guiding are achieved. The photovoltaic panel cooperates with the unified control module, so that system energy supply can be optimized; reliable, safe and intelligent control over the lifting function is achieved, ground rapid overhaul is supported, and the maintenance efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of street lamp lighting, in particular to an energy-saving LED street lamp convenient to maintain. BACKGROUND

[0002] At present, LED street lamps are generally fixedly installed on urban roads; such lighting devices are usually fixedly installed at the top of the lamp pole; however, this fixed installation method is prone to cause maintenance difficulties, and once the lamp is suspended high on the top of the pole, any maintenance or replacement must rely on an aerial work platform, which is inefficient and has prominent safety hazards.

[0003] To solve the maintenance inconvenience of fixed street lamps, the prior art attempts to introduce a lifting function in the fixed structure. For example, patent application No. CN202320382867.2 discloses a liftable street lamp device. The device enables the lamp body to be lowered from the installation position by setting a lifting assembly. However, this type of solution only realizes simple lifting action, and the lifting mechanism and the fixed support structure of the street lamp are a loose and single-function combination. The entire device fails to design around the core issue of optimizing the maintainability of fixedly installed lighting devices, resulting in insufficient mechanical reliability, operation convenience and integration level of the device, which cannot meet the actual needs of efficient and safe maintenance. SUMMARY

[0004] The present application relates to the technical field of street lamp lighting, in particular to an energy-saving LED street lamp convenient to maintain.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions: The utility model provides an energy -conserving LED street lamp of convenient overhaul, including base, lamp pole, lamp arm, lighting lamp head and photovoltaic board, the lamp pole is installed on the base, is equipped with longitudinal sliding slot in the lamp pole, one end of lamp arm is connected in the sliding slot, the lighting lamp head is installed on the other end of lamp arm, the photovoltaic board is installed on the upper end surface of lamp pole, be provided with lifting drive assembly in the lamp pole, lifting drive assembly includes drive motor and shaft sleeve, the drive motor is installed on the downside of lamp pole, the shaft sleeve is connected in the lamp pole, the one end of lamp arm is installed in the shaft sleeve, and the other end extends to the outside of lamp pole, install control module in the lamp pole, control module controls drive motor and drives the shaft sleeve to move up and down, drive motor and lighting lamp head all are connected with control module electricity, the core design of the integrated photovoltaic power supply, lifting drive and unified control module through the above scheme has solved the problem that the existing energy -conserving LED street lamp of convenient overhaul has single function and poor synergy, wherein the photovoltaic board not only supplies power for the lighting lamp head, but also can directly or through the energy storage device for the lifting drive assembly, realizes the direct empowerment of energy saving function to the maintenance function, the control module unifies the work of drive motor and lighting lamp head, becomes the intelligent system behavior that can be linked with the illumination condition, energy saving strategy, simultaneously, the rigid straight -connected structure of built -in lifting drive assembly and lamp arm ensures that the lifting process is stable and reliable, makes the street lamp can hover and work at any height, thereby expands the lifting from single maintenance tool to active function that can participate in the illumination control, guarantees the energy -conserving LED street lamp of convenient overhaul in the whole life cycle maintenance convenience and operation safety, the maximization of system overall energy efficiency, and the intelligence and high reliability of operation control.

[0006] Preferably, the lifting drive assembly further comprises a drive screw, the upper and lower ends of the drive screw are coaxially connected in the lamp pole, the lower end of the drive screw is coaxially connected with a drive worm wheel, the base is rotatably connected with a drive worm, the drive worm wheel is engaged with the drive worm for transmission, the rear end of the drive worm is connected with the drive motor, and the shaft sleeve is connected with the drive screw. The above scheme solves the problems of the traditional LED street lamp for convenient maintenance, such as the lamp arm sliding down due to reverse stress or vibration, unstable and inaccurate transmission, and jamming or failure caused by wear and rust after long-term use, by adopting an integrated transmission chain composed of a drive worm, a drive worm wheel and a drive screw. The engagement transmission of the drive worm and the drive worm wheel provides reliable self-locking capability, ensuring that the lamp arm can be safely locked at any height when the drive motor stops, preventing accidental falling. The screw transmission converts rotary motion into stable and accurate linear lifting, avoiding the common problems of slipping, jumping and stretching of steel wire rope transmission. The stability of the lifting process, the positioning accuracy and the repeatability of long-term operation of the energy-saving LED street lamp for convenient maintenance are ensured, thereby maintaining the reliability, operation safety and service life of the maintenance function of the energy-saving LED street lamp for convenient maintenance.

[0007] Preferably, the driving worm is provided with a clutch between the driving motor, the clutch includes a clutch piece, the output shaft of the driving motor is provided with a first clutch groove, the clutch piece is slidingly connected in the first clutch groove, a compression spring is installed in the first clutch groove, the two ends of the compression spring are connected with the clutch piece and the inner wall of the first clutch groove respectively, the end of the driving worm close to the driving motor is provided with a second clutch groove, the end of the clutch piece away from the driving motor is embedded in the second clutch groove, the end of the driving worm away from the driving motor is provided with a manual driving groove, the manual driving groove is communicated with the second clutch groove, a hand crank is slidingly connected in the manual driving groove; the above scheme solves the problem that the manual operation mode switching of the existing LED street lamp convenient for maintenance is complex, unreliable and even completely unable to enable the manual function when the motor fails or the power is interrupted by designing the clutch piece kept closed engagement by the compression spring and the second clutch groove and the manual driving groove integrated and communicated at the end of the driving worm; the clutch structure ensures that the driving motor power is transmitted to the driving worm without loss in normal state, and in emergency, the action of inserting the hand crank can directly push the clutch piece away, so that the driving motor and the driving worm are separated, and the quick switching from electric drive to manual drive is completed; the availability of the lifting function, the convenience and reliability of the emergency operation and the maintenance redundancy safety protection of the system under extreme conditions are ensured under any power or motor failure state.

[0008] Preferably, the end of the driving worm close to the driving motor is coaxially provided with a brake disc, a plurality of brake grooves are circumferentially provided on the brake disc, an electromagnetic brake is installed on the base, the electromagnetic brake is normally closed, and one end of the electromagnetic brake is embedded in the brake groove when the electromagnetic brake is powered off; the above scheme solves the problem that the existing LED street lamp convenient for maintenance may cause the lamp arm to accidentally slide or fall due to the failure of the self-locking of the transmission mechanism by coaxially arranging the brake disc with circumferential brake grooves on the driving worm and cooperating with the installation of the normally closed electromagnetic brake; the design relies on the mechanical parts of the electromagnetic brake to automatically embed in the brake groove when the system is powered off, and realizes the rigid secondary mechanical locking regardless of the state of the main transmission chain; the redundant braking mechanism ensures the safety and parking reliability of the energy-saving LED street lamp convenient for maintenance under any working condition, and ensures that the lamp arm can be immediately and reliably locked at the current position in the extreme case of power interruption or control failure, thereby providing failure safety protection and enhancing the overall safety level of the energy-saving LED street lamp convenient for maintenance.

[0009] Preferably, the electromagnetic brake includes an electromagnetic coil and a brake core. When the electromagnetic brake is de-energized, one end of the brake core is embedded in the brake groove, and a linkage ring is installed on the other end of the brake core. The linkage ring is slidably sleeved on the output shaft of the drive motor. The above solution, by setting a linkage ring on the brake core and slidably sleeved on the output shaft of the drive motor, mechanically links the manual drive clutch operation with the release of the electromagnetic brake. This solves the problem that existing LED streetlights, which are easy to maintain, require operators to perform two steps—switching the clutch and releasing the brake—when using the manual emergency mode. In emergencies, operators may even forget to release the brake, resulting in manual operation failure or damage to the mechanism. When the hand crank is inserted and the clutch plate is pushed towards the motor, the clutch plate will synchronously drive the linkage ring and the brake core to retract as a whole, so that the brake core automatically and reliably disengages from the brake groove, thereby achieving synchronous completion of power switching and brake release. This ensures the smoothness and operational efficiency of the energy-saving LED streetlights during emergency manual lifting and lowering operations, avoids misoperation, and improves the reliability of maintenance in emergency situations.

[0010] Preferably, the drive screw is a ball screw, and a ball nut that mates with the drive screw is fixedly installed on the inner ring of the bushing. The drive worm gear and the drive worm form a worm gear pair, and the lead angle of the drive worm is smaller than the equivalent friction angle. The above solution solves the problems of high energy consumption, easy wear, insufficient positioning accuracy, and the inability of a single transmission mechanism to simultaneously achieve both operating efficiency and safe self-locking in the lifting transmission of traditional, easily maintained LED streetlights by adopting a composite transmission design that combines a high-efficiency ball screw pair with a self-locking worm gear pair. The ball screw pair achieves efficient, stable, and low-wear power transmission and precise position control through rolling friction, reducing energy loss during the lifting process and extending the life of the mechanism. Meanwhile, the worm gear pair with a small lead angle design provides reliable, external-power-free mechanical self-locking, ensuring that the lamp arm can be absolutely prevented from slipping due to gravity when stopped at any position. The combination of the two makes the energy-saving LED street light lifting system, which is easy to maintain, simultaneously ensure the energy efficiency of the drive, the smooth and precise operation, the long-term durability, and the safety of the stopping position.

[0011] Preferably, the meshing tooth surfaces of the drive worm and the drive worm wheel are provided with a pressure-bearing surface, which is hardened and has a surface roughness Ra of no more than 0.8 μm. The rotating connection between the drive worm and the base is made of a self-lubricating material. The above solution solves the problems of reduced transmission accuracy and efficiency due to tooth surface wear in traditional, easily maintained LED streetlights during long-term outdoor use, as well as the problems of sluggish rotation or even jamming due to lubrication failure or dust intrusion, by adopting a synergistic wear-resistant and friction-reducing design. Hardening the pressure-bearing surface and controlling its surface roughness improves the wear resistance and load-bearing efficiency of the tooth surface, ensuring the long life of the transmission pair and the stability of power transmission. At the same time, the use of a self-lubricating material in the support part of the drive worm forms a built-in, maintenance-free lubrication guarantee, which can maintain low resistance and smooth rotation even when external lubricant fails or in harsh environments. This ensures the operational reliability, transmission efficiency durability, and low maintenance requirements of the energy-saving LED streetlight lifting drive system throughout its entire life cycle.

[0012] Preferably, a composite sealing guide assembly is provided within the slide groove. This assembly includes a sealing lock head, a male buckle, and a female buckle. The middle portion of the sealing lock head is slidably fitted onto the end of the lamp arm near the lamp post. The male and female buckles are respectively installed on the inner sidewalls of both sides of the slide groove. Sealing grooves are formed on the sides of the sealing lock head, and the male and female buckles are slidably connected within these grooves. This solution, by designing a composite sealing guide assembly comprising a sealing lock head, a male buckle, and a female buckle, and slidably connecting the three components through sealing grooves and a fastening structure, solves the problem of long-term adhesion between the lamp arm and the slide groove in traditional, easily maintained LED streetlights. Exposed to the outdoors, these lights are susceptible to dust, rain, and moisture, leading to corrosion and jamming of the internal lifting mechanism. Excessive friction or rapid wear of the seals can also affect the smoothness and lifespan of the lifting mechanism. During the lifting of the lamp arm, a dynamic, multi-level physical seal is achieved through sliding contact, enhancing the protection level. Simultaneously, the sealing lock ensures low sliding friction and stable guidance. The composite sealing and guiding assembly structurally ensures that the core lifting system of this energy-saving LED street light, which is easy to maintain, is protected from environmental corrosion during long-term use, thus reliably maintaining the long-term stability and durability of the lifting function.

[0013] Preferably, guide blocks are provided at both the upper and lower ends near the center of the sealing lock head within the sealing groove, and guide plates are installed on both sides of the upper and lower ends of the sealing groove. Multiple guide plates are arc-shaped, and a self-lubricating material strip is embedded at the bottom of the sealing groove. The sliding contact surfaces of the male and female buckles with the material strip are arc-shaped, forming line contact or narrow surface contact with the sidewall of the sealing groove. This solution, through the combination of guide blocks and arc-shaped guide plates at the upper and lower ends inside the sealing groove, combined with the self-lubricating material strip at the bottom of the groove and the arc-shaped line contact or narrow surface contact formed between the male and female buckles and the material strip, achieves this effect. This design solves the problems of high sliding resistance, easy jamming and wear due to misalignment, and sliding jamming caused by lubrication failure after long-term use in traditional street light sliding groove sealing structures. The guide block and guide plate ensure the precise alignment and stability of the sealing lock head in the groove, preventing skewing. The self-lubricating material strip provides long-term, maintenance-free lubrication. The line contact or narrow surface contact minimizes the friction area while ensuring sealing. This improves the smoothness, accuracy, and long-term reliability of the lamp arm lifting process, thereby ensuring the long-term availability and sealing of the core maintenance function of the street light.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention solves the problems of limited functionality and poor coordination in existing easy-to-maintain LED streetlights by integrating photovoltaic power supply, lifting drive, and a unified control module. The photovoltaic panel not only powers the lighting head but also directly or through an energy storage device powers the lifting drive component, enabling energy-saving functions to directly empower maintenance. The control module coordinates the operation of the drive motor and the lighting head, creating an intelligent system behavior that can be linked to lighting conditions and energy-saving strategies. This ensures the ease of maintenance and operational safety of the energy-saving LED streetlight throughout its entire lifecycle, maximizes the overall energy efficiency of the system, and ensures intelligent and highly reliable operation control.

[0015] 2. This invention solves the problems of traditional, easily maintained LED streetlights where the lifting mechanism is prone to slippage of the lamp arm and insufficient smoothness and precision of transmission due to reverse force or vibration, as well as jamming or failure caused by wear and corrosion after long-term use, by adopting an integrated transmission chain composed of a driving worm, a driving worm wheel, and a driving lead screw. It ensures the smoothness, positioning accuracy, and long-term repeatability of the lifting process of the easily maintained energy-saving LED streetlight, thereby maintaining the reliability of the maintenance function, operational safety, and service life of the mechanism.

[0016] 3. This invention solves the problem that existing LED streetlights, which are easy to maintain, have complex and unreliable manual operation mode switching when the motor fails or the power is interrupted. This is achieved by designing a clutch plate that is normally closed by a compression spring, and integrating a second clutch groove and a manual drive groove at the end of the drive worm gear. The invention also ensures that the streetlight's lifting function is available, emergency operation is convenient and reliable, and the system has maintenance redundancy and safety assurance under extreme conditions, regardless of power or motor failure. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of the energy-saving LED street light of the present invention, which is easy to maintain; Figure 2 This is a state diagram of the energy-saving LED street light of the present invention during maintenance, which is easy to inspect and repair. Figure 3 This is a cross-sectional view of the energy-saving LED street light of the present invention, which is easy to maintain; Figure 4 This is an internal structural diagram of the energy-saving LED street light of the present invention, which is easy to maintain; Figure 5 This is a schematic diagram of the clutch installation in the energy-saving LED street light of the present invention, which is easy to maintain; Figure 6 For the present invention Figure 5 Sectional view at point AA; Figure 7 For the present invention Figure 3 A magnified view of a section at point B in the middle; Figure 8 This is a top view of the sealing lock head in the energy-saving LED street light of the present invention, which is easy to maintain; Figure 9 This is a cross-sectional view of the sealing lock head in the energy-saving LED street light of the present invention, which is easy to maintain.

[0018] In the diagram: 1. Base; 2. Lamp post; 3. Lamp arm; 4. Lighting head; 5. Photovoltaic panel; 6. Slide groove; 701. Drive motor; 702. Bushing; 703. Control module; 704. Drive screw; 705. Drive worm gear; 706. Drive worm; 707. Clutch plate; 708. No. 1 clutch groove; 709. Compression spring; 710. No. 2 clutch groove; 711. Manual drive groove; 712. Hand crank; 713. Ball nut; 714. Pressure surface; 801. Brake disc; 802. Brake groove; 803. Electromagnetic coil; 804. Brake core; 805. Linkage ring; 901. Sealing lock head; 902. Sealing groove; 903. Male buckle; 904. Female buckle; 905. Guide block; 906. Guide plate; 907. Material strip. Detailed Implementation

[0019] Please seeFigures 1 to 9 This invention provides an energy-saving LED street light that is easy to maintain, and the technical solution is as follows: For an easy-to-maintain energy-saving LED street light, please refer to [link / reference]. Figures 1 to 9The system includes a base 1, a lamp post 2, a lamp arm 3, a lighting head 4, and a photovoltaic panel 5. The lamp post 2 is mounted on the base 1 and has a longitudinal groove 6. One end of the lamp arm 3 is slidably connected to the groove 6, and the lighting head 4 is mounted on the other end of the lamp arm 3. The photovoltaic panel 5 is mounted on the upper surface of the lamp post 2. A composite sealing guide assembly is provided in the groove 6. The composite sealing guide assembly includes a sealing lock head 901, a male buckle 903, and a female buckle 904. The middle part of the sealing lock head 901 is slidably sleeved on the end of the lamp arm 3 near the lamp post 2. The male buckle 903 and the female buckle 904 are respectively mounted on the inner side walls of the two sides of the groove 6. A sealing groove 902 is provided on each side of the lamp post 1. Male buckle 903 and female buckle 904 are slidably connected in the sealing grooves 902 on both sides of the sealing lock head 901. Guide blocks 905 are provided at the upper and lower ends of the sealing grooves 902 near the middle of the sealing lock head 901. Guide plates 906 are installed on both sides of the upper and lower ends of the sealing grooves 902. Multiple guide plates 906 are arc-shaped. A self-lubricating material strip 907 is embedded in the bottom of the sealing groove 902. The sliding contact surface between the male buckle 903, female buckle 904 and the material strip 907 is an arc-shaped surface, forming a line contact or narrow surface contact with the side wall of the sealing groove 902. A lifting drive assembly is provided inside the lamp post 2. The drive assembly includes a drive motor 701 and a bushing 702. The drive motor 701 is mounted on the lower side of the lamp post 2, and the bushing 702 is slidably connected inside the lamp post 2. One end of the lamp arm 3 is mounted on the bushing 702, and the other end extends outside the lamp post 2. A control module 703 is installed inside the lamp post 2. The control module 703 controls the drive motor 701 to drive the bushing 702 to move up and down. The drive motor 701 and the lighting lamp head 4 are both electrically connected to the control module 703. The lifting drive assembly also includes a drive screw 704. The upper and lower ends of the drive screw 704 are coaxially rotatably connected inside the lamp post 2. A drive worm gear 70 is coaxially mounted on the lower end of the drive screw 704. 5. A drive worm 706 is rotatably connected to the base 1. A drive worm wheel 705 meshes with the drive worm 706 for transmission. The rear end of the drive worm 706 is connected to the drive motor 701. The drive screw 704 is a ball screw. A ball nut 713 that mates with the drive screw 704 is fixedly installed on the inner ring of the bushing 702. The drive worm wheel 705 and the drive worm 706 form a worm gear pair. The lead angle of the drive worm 706 is less than the equivalent friction angle. A pressure-bearing surface 714 is provided on the meshing tooth surface of the drive worm 706 and the drive worm wheel 705. The pressure-bearing surface 714 is hardened and its surface roughness Ra is equal to 0.The rotatable connection between the drive worm 706 and the base 1 is made of a self-lubricating material with a diameter of 8μm. A clutch is provided between the drive worm 706 and the drive motor 701. The clutch includes a clutch plate 707. A first clutch groove 708 is opened on the output shaft of the drive motor 701. The clutch plate 707 is slidably connected in the first clutch groove 708. A compression spring 709 is installed in the first clutch groove 708. The two ends of the compression spring 709 are respectively connected to the clutch plate 707 and the inner wall of the first clutch groove 708. A second clutch groove 710 is opened on the end of the drive worm 706 near the drive motor 701. The end of the clutch plate 707 away from the drive motor 701 is embedded in the second clutch groove 710. A manual drive slot 711 is provided, which communicates with the second clutch slot 710. A hand crank 712 is slidably connected within the manual drive slot 711. A brake disc 801 is coaxially mounted on one end of the drive worm gear 706 near the drive motor 701. Multiple brake grooves 802 are formed on the circumference of the brake disc 801. An electromagnetic brake is mounted on the base 1. The electromagnetic brake is normally closed; when the electromagnetic brake is de-energized, one end of the electromagnetic brake is embedded in the brake groove 802. The electromagnetic brake includes an electromagnetic coil 803 and a brake core 804. When the electromagnetic brake is de-energized, one end of the brake core 804 is embedded in the brake groove 802, and a linkage ring 805 is mounted on the other end of the brake core 804. The linkage ring 805 is slidably sleeved on the output shaft of the drive motor 701.

[0020] When working, please refer to Figures 1 to 9 During the day, the photovoltaic panel 5 installed on the top of the light pole 2 converts solar energy into electrical energy, which is managed by the control module 703. It prioritizes charging the energy storage unit built into the street light or directly powers the control system. The control module 703 continuously monitors the light intensity, time and energy storage status.

[0021] As night falls, the control module 703 automatically wakes up the system based on preset sensor signals. It first starts the drive motor 701, which transmits power to the drive worm gear 706 via the engaged clutch. The drive worm gear 706 drives the drive worm wheel 705, rotating the ball screw and causing the bushing 702, fitted with the ball nut 713, to rise smoothly, raising the lamp arm 3 and the lighting head 4 from a potential maintenance or storage position to the preset lighting working height. During this process, the normally closed electromagnetic brake is in an energized and released state, its brake core 804 disengaging from the brake groove 802 of the brake disc 801, without obstructing transmission. Simultaneously, the composite sealing guide assembly continuously provides a dustproof and waterproof seal during the sliding of the lamp arm 3, protecting the internal mechanisms. Upon reaching the designated height, the control module 703 cuts off the power to the drive motor 701. At this point, the worm gear pair achieves mechanical self-locking because its lead angle is less than the equivalent friction angle, thus locking the lamp arm 3. Subsequently, the control module 703 controls the lighting head 4 to illuminate, providing road lighting. The electricity generated during the entire lifting process can be primarily derived from photovoltaic energy storage, realizing an energy-saving logic of using green energy to complete its own maintenance and preparation.

[0022] When maintenance is required and the mains power is interrupted or the drive motor 701 malfunctions, the system enters emergency mode. Maintenance personnel insert the hand crank 712 into the manual drive slot 711 at the end of the drive worm 706. When the hand crank 712 is pushed forward, its front end directly acts on the clutch plate 707, overcoming the spring force of the compression spring 709, causing the clutch plate 707 to disengage from the second clutch slot 710 of the drive worm 706, thereby disconnecting the power link between the motor and the worm. Crucially, when the clutch plate 707 retracts, it simultaneously drives the connected linkage ring 805 and the brake core 804 to move axially as a whole, forcing the brake core 804 to disengage from the brake disc 801 brake slot 802 at its front end, releasing the mechanical brake. Subsequently, manually rotating the hand crank 712 directly drives the drive worm 706, and the power is transmitted through the drive worm wheel and ball screw, allowing the lamp arm 3 to be lowered smoothly and manually. Maintenance can then be performed after it has been lowered to the appropriate height.

[0023] In the event of a sudden power outage while the system is running or stationary, the control module 703 loses power. The electromagnetic coil 803 of the normally closed electromagnetic brake immediately demagnetizes, and its brake core 804 is rapidly ejected by the internal spring, embedding itself into the brake groove 802 of the brake disc 801, applying an independent, rigid mechanical lock to the drive worm gear 706. This safety barrier, along with the worm gear self-locking mechanism which may become less reliable due to wear or lubrication changes, forms a redundant backup, providing double protection to ensure that the lamp arm 3 has no risk of accidental slippage. Simultaneously, because the clutch remains engaged, the entire transmission chain is locked in its current position, providing a definitive safe starting point for subsequent power restoration or manual intervention.

[0024] The specific embodiment of the present invention has been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the embodiments described above. For those skilled in the art, various changes, modifications, substitutions, and variations made to these embodiments without departing from the principles and ideas of the present invention should still fall within the protection scope of the present invention.

Claims

1. An energy-saving LED street light that is easy to maintain, characterized in that, The light pole (2) includes a base (1), a lamp post (2), a lamp arm (3), a lighting head (4), and a photovoltaic panel (5). The lamp post (2) is fixedly installed on the base (1). A longitudinal groove (6) is provided on the lamp post (2). One end of the lamp arm (3) is slidably connected in the groove (6). The lighting head (4) is fixedly installed on the other end of the lamp arm (3). The photovoltaic panel (5) is installed on the upper surface of the lamp post (2). A lifting drive assembly is provided inside the lamp post (2). The lifting drive assembly includes a drive motor (701). The drive motor (701) is installed on the lower side of the lamp post (2), and the bushing (702) is slidably connected inside the lamp post (2). One end of the lamp arm (3) is installed on the bushing (702), and the other end extends outside the lamp post (2). A control module (703) is installed inside the lamp post (2). The control module (703) controls the drive motor (701) to drive the bushing (702) to move up and down. The drive motor (701) and the lighting lamp head (4) are both electrically connected to the control module (703).

2. The energy-saving LED street light that is easy to maintain according to claim 1, characterized in that: The lifting drive assembly also includes a drive screw (704), the upper and lower ends of which are coaxially rotatably connected to the lamp post (2). A drive worm gear (705) is coaxially mounted on the lower end of the drive screw (704). A drive worm (706) is rotatably connected to the base (1). The drive worm gear (705) meshes with the drive worm (706) for transmission. The rear end of the drive worm (706) is connected to the drive motor (701). The bushing (702) is connected to the drive screw (704).

3. The energy-saving LED street light that is easy to maintain according to claim 2, characterized in that: A clutch is provided between the drive worm gear (706) and the drive motor (701). The clutch includes a clutch plate (707). A clutch groove (708) is formed on the output shaft of the drive motor (701). The clutch plate (707) is slidably connected in the clutch groove (708). A compression spring (709) is installed in the clutch groove (708). The two ends of the compression spring (709) are respectively connected to the clutch plate (707) and the inner wall of the clutch groove (708). The drive worm (706) has a second clutch groove (710) on one end near the drive motor (701). The clutch plate (707) is embedded in the second clutch groove (710) at one end away from the drive motor (701). The drive worm (706) has a manual drive groove (711) on one end away from the drive motor (701). The manual drive groove (711) is connected to the second clutch groove (710). A hand crank (712) is slidably connected in the manual drive groove (711).

4. The energy-saving LED street light that is easy to maintain according to claim 3, characterized in that: A brake disc (801) is coaxially mounted on one end of the drive worm gear (706) near the drive motor (701). The brake disc (801) has multiple brake grooves (802) on its circumference. An electromagnetic brake is mounted on the base (1). The electromagnetic brake is normally closed. When the electromagnetic brake is de-energized, one end of the electromagnetic brake is embedded in the brake groove (802).

5. The energy-saving LED street light that is easy to maintain according to claim 4, characterized in that: The electromagnetic brake includes an electromagnetic coil (803) and a brake core (804). When the electromagnetic brake is de-energized, one end of the brake core (804) is embedded in the brake groove (802), and a linkage ring (805) is installed on the other end of the brake core (804). The linkage ring (805) is slidably sleeved on the output shaft of the drive motor (701).

6. The energy-saving LED street light that is easy to maintain according to claim 2, characterized in that: The drive screw (704) is a ball screw, and a ball nut (713) that cooperates with the drive screw (704) is fixedly installed on the inner ring of the bushing (702). The drive worm wheel (705) and the drive worm (706) form a worm gear pair. The lead angle of the drive worm (706) is smaller than the equivalent friction angle.

7. The energy-saving LED street light that is easy to maintain according to claim 2, characterized in that: The meshing tooth surfaces of the drive worm (706) and the drive worm wheel (705) are provided with a pressure surface (714). The pressure surface (714) is hardened and the surface roughness Ra of the pressure surface (714) is not greater than 0.8μm. The position where the drive worm (706) and the base (1) are rotatably connected is made of a self-lubricating material.

8. The energy-saving LED street light that is easy to maintain according to claim 1, characterized in that: A composite sealing guide assembly is provided in the slide groove (6). The composite sealing guide assembly includes a sealing lock head (901), a male buckle (903), and a female buckle (904). The middle part of the sealing lock head (901) is slidably sleeved on one end of the lamp arm (3) near the lamp post (2). The male buckle (903) and the female buckle (904) are respectively installed on the inner sidewalls of the two sides of the slide groove (6). A sealing groove (902) is provided on the side of the sealing lock head (901). The male buckle (903) and the female buckle (904) are slidably connected in the sealing grooves (902) on both sides of the sealing lock head (901).

9. The energy-saving LED street light that is easy to maintain according to claim 1, characterized in that: Guide blocks (905) are provided at the upper and lower ends of the sealing groove (902) near the middle of the sealing lock head (901). Guide plates (906) are installed on both sides of the upper and lower ends of the sealing groove (902). The multiple guide plates (906) are all arc-shaped. A self-lubricating material strip (907) is embedded in the bottom of the sealing groove (902). The sliding contact surfaces of the male buckle (903), female buckle (904) and the material strip (907) are arc-shaped surfaces, forming line contact or narrow surface contact with the side wall of the sealing groove (902).

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