A liftable lamp post and a lighting street lamp

Abstract

The present invention discloses a liftable lamp pole and lighting street lamp, including a lifting mechanism for adjusting the height of a lamp holder frame in a pole seat, an adjustment shaft in the pole seat movably arranged on the lamp seat, and a first gear and a second gear for meshing bevel gears arranged in the pole seat. The liftable lamp pole and lighting street lamp provided by the present invention respectively assemble a positioning plate, a first gear and a second gear by pulling and adjusting the shaft, and respectively form three modes of directly laying down the street lamp, automatically lowering the street lamp and manually lowering the street lamp, so that when there are three or more staff members on site, the laid-down street lamp can be directly supported by hand, when there are only one or two staff members on site, the street lamp can be automatically lowered and the next street lamp can be automatically lowered, and when there is only one staff member on site, the street lamp can be manually lowered and the street lamp maintenance work can be handled one-to-one, so that the street lamp has stronger adaptability and the distribution of labor resource costs is efficient and standardized.

Description

Technical Field

[0001] The present invention relates to the technical field of lighting street lamps, and more particularly to a liftable lamp post and a lighting street lamp. Background Art

[0002] Street lamps are commonly used for road lighting, and have the advantages of high efficiency, energy saving, safety, etc., providing necessary guarantees for the passage of pedestrians and vehicles at night.

[0003] According to the publication (announcement) number: CN112082123A, the publication (announcement) date: December 15, 2020, a smart street lamp that is easy to repair is disclosed.

[0004] In the prior art including the above patents, for the street lamps used for park road lighting, due to the space where the street lamps are located, it is not easy for large-scale climbing equipment to enter. Generally, the method of manually climbing a ladder is used to maintain or repair the street lamps. However, working at heights is accompanied by risks. Therefore, the lamp post of the street lamp will be lifted to adjust to a height suitable for maintenance and repair. However, the lifting method of the lamp post is limited. Generally, an electric device needs to be used for lifting to meet a large number of maintenance work, but this undoubtedly increases the new maintenance and repair cost. And using the ordinary mechanical method requires manual handling one by one, which reduces the efficiency when the street lamps are regularly maintained, makes the distribution of human resources uneven, and lengthens the recovery period of the park. Summary of the Invention

[0005] The purpose of the present invention is to provide a liftable lamp post and a lighting street lamp, aiming to solve the problems generated above.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A liftable lamp post includes a lamp head frame, and further includes a lamp base with a seat movable thereon. A lifting mechanism for adjusting the height of the lamp head frame is provided in the seat. A screw rod for assembling bevel gears is provided on the lifting mechanism. An adjusting shaft member is movably provided on the lamp base and is located in the seat. A first gear and a second gear for meshing bevel gears are provided in the seat;

[0008] A positioning plate with an inclined wedge surface is further provided in the seat. A volute spring whose end is used to press and fix the adjusting shaft member is installed in the inclined wedge surface. A sliding head that is inserted and matched with the second gear is fixedly installed on the volute spring;

[0009] Inserting rods arranged at equal intervals in an arc shape are fixedly installed on the positioning plate. The adjusting shaft member moving forward horizontally unlocks the seat;

[0010] A square shaft is fixedly sleeved on the adjusting shaft member. Shaft protrusions are provided at relative positions of the square shaft. When the square shaft moves horizontally in different directions to cooperate with the first gear and the second gear respectively to form the following two working positions:

[0011] In the first station, the square shaft engages with the first gear, so that the second gear is engaged and rotated by the bevel gear to store force in the vortex spring;

[0012] At the second station, the square shaft engages with the second gear, and the shaft convexly pulls the first gear to decouple the bevel gear, and the first gear pushes the sliding head and slides with the bevel surface in the closed state, so that the vortex spring is wound and recharged.

[0013] Preferably, an opening section is provided at the end of the screw rod, and the adjustment shaft is plug-fitted with the opening section in a default state.

[0014] Preferably, a round shaft is arranged between the square shaft and the shaft protrusion, and the first gear under the second station moves on the round shaft, and the first gear is horizontally pushed by the adjusting shaft to abut against the side wall of the bevel gear.

[0015] Preferably, the bevel surface is provided with circumferentially arranged clamping plates, and the clamping plates are squeezed by the axis of the vortex spring to fit the side wall of the adjustment shaft.

[0016] Preferably, the angle between the clamp plate and the adjustment shaft is adjustable in the compressed state.

[0017] Preferably, the side wall of the adjustment shaft is provided with equidistantly arranged slot sections, and a clamping member engaged with the slot sections is fixedly mounted on the clamping hoop plate.

[0018] Preferably, the fixing sleeve on the adjusting shaft is provided with an annular protrusion for pushing and fitting the clamping hoop plate.

[0019] Preferably, an arc protrusion is fixedly mounted on the positioning plate, and a movable sleeve on the screw rod is provided with a contact frame sliding in the rod seat. The engaged annular protrusion rotates synchronously with the clamping plate, so that the arc protrusion pushes the contact frame upward to increase the screw rod stroke.

[0020] Preferably, a limiting protrusion embedded between adjacent clamping plates is fixedly mounted on the vortex spring, and the limiting protrusion causes the vortex spring to deform and curl in a direction opposite to the rotation direction of the positioning plate.

[0021] A lighting street lamp comprises any of the above-mentioned liftable lamp poles.

[0022] In the above technical solution, a liftable lamp post and a lighting street lamp provided by the present invention have the following beneficial effects: By pushing the adjustment shaft member into the rod base, the insertion rod unlocks the rod base so that the sleeve and the lamp head frame on the rod base can be tilted and laid down. With the cooperation of three or more on-site workers for manual support, maintenance or repair work can be carried out quickly and efficiently. When the adjustment shaft member is pulled and in the first working position, the spiral spring stores energy and provides resistance under the rotation of the bevel gear, so that the lifting mechanism automatically lowers the lamp head frame to the lowest position. Therefore, the on-site workers can perform the automatic lowering process on the street lamps in sequence. When there are only one or two on-site workers, after adjusting the street lamp to the automatic state, they can leave and use the same automatic lowering process for the next street lamp. This method can also adapt to large-area maintenance or repair of street lamps, ensuring the on-site work efficiency. When the adjustment shaft member is directly pulled to the second working position, the first gear squeezes the spiral spring to be pre-curled, so as to increase the radial extrusion force on the adjustment shaft member towards the axis, making it difficult for the on-site workers to cause problems such as slipping of the working position when manually rotating the adjustment shaft member, reducing manual errors. At the same time, under the combined action of the pre-stored energy and the rotational energy storage of the spiral spring, the resistance of the manually lowered lamp head frame is greater, the manual operation is easier to control, and it is also safer, avoiding situations such as the lamp head frame falling at a speed that causes damage to the lighting lamp or injury to the on-site workers. It can also adapt to the situation where there is only one on-site worker, enabling the on-site worker to handle the street lamp maintenance work one by one, with stronger adaptability, more standardized and efficient distribution of human resource costs, and a shorter park recovery period. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0024] Figure 1 Structural schematic diagram of the lighting street lamp and the removal of the control room door panel provided by the embodiment of the present invention;

[0025] Figure 2 Exploded view of the rod base and the lamp base of the lamp head frame provided by the embodiment of the present invention;

[0026] Figure 3 Schematic view of the right side perspective of the cross-section of the rod base and the lifting mechanism thereon provided by the embodiment of the present invention;

[0027] Figure 4 Schematic view of the cross-section of the rod base and the partial lifting mechanism provided by the embodiment of the present invention;

[0028] Figure 5 For Figure 4 Enlarged schematic view of part A;

[0029] Figure 6 Assembly schematic diagram of the transmission positions of the bevel gear, the first gear, the second gear and the positioning plate provided by the embodiment of the present invention;

[0030] Figure 7 Assembly schematic diagram of the adjusting shaft member, the first gear and the second gear provided by the embodiment of the present invention;

[0031] Figure 8 Exploded schematic diagram of the adjusting shaft member, the first gear and the second gear provided by the embodiment of the present invention;

[0032] Figure 9 Assembly schematic diagram of the volute spring and the upper hoop piece thereon provided by the embodiment of the present invention.

[0033] Explanation of reference numerals:

[0034] 1. Lamp holder; 11. Control room; 2. Rod base; 20. Counterweight base; 21. Transmission cover; 3. Lamp head frame; 4. Lifting mechanism; 41. Screw rod; 42. Open section; 43. Bevel gear; 431. Limiting cylinder; 5. Adjusting shaft member; 50. Adjusting bracket; 51. Square shaft; 52. Round shaft; 53. Shaft convex; 54. Groove section; 55. Ring convex; 6. First gear; 7. Second gear; 71. Pushing member; 8. Positioning plate; 81. Inserting rod; 811. Inserting hole; 82. Arc protrusion; 821. Contact receiving frame; 9. Volute spring; 90. Inclined wedge surface; 91. Sliding head; 92. Hoop piece; 93. Clamping member; 94. Limiting protrusion. Detailed implementation manners

[0035] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further introduced in detail below in conjunction with the accompanying drawings.

[0036] As Figures 1-9 shown, a liftable lamp post and a lighting street lamp include a lamp head frame 3, and also include a lamp holder 1 with a rod base 2 movably arranged therein. A lifting mechanism 4 for adjusting the height of the lamp head frame 3 is arranged in the rod base 2. A screw rod 41 equipped with a bevel gear 43 is arranged on the lifting mechanism 4. An adjusting shaft member 5 is movably arranged on the lamp holder 1 and is located in the rod base 2. A first gear 6 and a second gear 7 for meshing with the bevel gear 43 are arranged in the rod base 2;

[0037] A positioning plate 8 with an inclined wedge surface 90 is further arranged in the rod base 2. A volute spring 9 with an end for pressing and fixing the adjusting shaft member 5 is installed in the inclined wedge surface 90. A sliding head 91 which is in plug-in fit with the second gear 7 is fixedly installed on the volute spring 9;

[0038] Inserting rods 81 arranged in an arc shape and at equal intervals are fixedly installed on the positioning plate 8. The adjusting shaft member 5 moving forward horizontally pushes the inserting rods 81 to unlock the rod base 2;

[0039] A square shaft 51 is fixedly sleeved on the adjusting shaft 5, and a shaft protrusion 53 is arranged at a relative position of the square shaft 51. When the square shaft 51 is translated in a direction to match the first gear 6 and the second gear 7, the following two positions are formed:

[0040] In the first station, the square shaft 51 engages with the first gear 6, so that the second gear 7 is meshed and rotated by the bevel gear 43 to store force in the vortex spring 9;

[0041] At the second station, the square shaft 51 engages with the second gear 7, and the shaft protrusion 53 pulls the first gear 6 to decouple the bevel gear 43, and the first gear 6 pushes the sliding head 91 and slides with the bevel surface 90 in the closed state, so that the vortex spring 9 is wound and recharged.

[0042] Specifically, the lamp holder 1 is installed on a cement base on the ground using bolts and nuts, and a control room 11 is fixedly installed on the side wall of the lamp holder 1, and a door panel is hingedly installed on the control room 11, and the door panel is locked (existing technology, which will not be described here), so that the knob at the end of the adjustment shaft 5 in the control room 11 is protected, and a drainage hole is provided at the bottom of the notch on the lamp holder 1 that accommodates the rotation of the rod seat 2 to prevent rainwater and dirt from seeping into the rod seat 2 and interfering with the operation of parts, and a counterweight seat 20 is fixedly installed at the bottom of the rod seat 2 to increase the stability of the rod seat 2 in a vertical state, and an axis block that rotates on the lamp holder 1 is fixedly installed at the axis center of the semicircular counterweight seat 20 to facilitate the deflection and laying of the rod seat 2.

[0043] Furthermore, a lighting lamp is installed on the lamp holder frame 3, and the lighting lamp and its wiring method are all existing technologies and are not elaborated here. A vertical transmission cover 21 for accommodating the movement of the lifting mechanism 4 is fixedly installed on the rod seat 2, and a cover body is installed on the lower end of the lamp holder frame 3 and is sleeved on the outside of the transmission cover 21, so that the transmission cover 21 and the cover body that are interlaced with each other can provide waterproof and protective functions for the lifting mechanism 4, and the lifting mechanism 4 adopts a traditional threaded lifting method (the screw rod 41 is threadedly connected to the block to lift it, so that the vertical rod on the block pushes the lamp holder frame 3 to move up and down), so that the height adjustment of the lamp holder frame 3 is more convenient.

[0044] Furthermore, an L-shaped connecting frame is installed in the rod seat 2 using bolts and nuts, and a limiting cylinder 431 that rotates on the connecting frame is fixedly installed on the bevel gear 43 to provide a supporting force for the bevel gear 43 to rotate stably.

[0045] Furthermore, the first gear 6 and the second gear 7 (both are bowl-shaped, and the teeth are located at the mouth of the bowl) are provided with square gaps at the axis centers so that the gaps and the square shaft 51 match, and the side length of the square shaft 51 is the same as the diameter of the adjustment shaft 5, so that the adjustment shaft 5 can perform station switching, and the first gear 6, the second gear 7 and the square shaft 51 have the same thickness, but the diameter of the second gear 7 is larger than the diameter of the first gear 6, and both gears are engaged with the bevel gear 43 in the default state.

[0046] Furthermore, the cam 53 is located at the end of the adjusting shaft 5, so that the adjusting shaft 5 at the second station can form a thrust on the first gear 6 through the cam 53 to decouple the bevel gear 43. The rod seat 2 is equipped with an adjusting bracket 50 using bolts and nuts. A tension spring is fixedly installed on the first gear 6, and the tension spring is rotatably set on the adjusting bracket 50, so that the decoupled first gear 6 drives the tension spring to deform, and the second gear 7 is rotatably set on the adjusting bracket 50, and a hole is opened on the adjusting bracket 50 for the adjusting shaft 5 to pass through, and the diameter of the hole is larger than the spacing between the symmetrically arranged cams 53, so that the adjusting bracket 50 does not interfere with the switching between the first station and the second station.

[0047] Furthermore, a circular hole for accommodating the vortex spring 9 is provided on the positioning plate 8, and the bevel surface 90 is an opening of the circular hole, that is, it corresponds to the opening for the sliding head 91 to extend out and move. A through hole is provided on the end face of the second gear 7 for the sliding head 91 to be inserted, and a spring is fixedly installed at the port of the through hole, and a "T"-shaped pushing piece 71 is fixedly installed on the spring, so that in the process of the first gear 6 approaching the second gear 7, the first gear 6 first contacts the pushing piece 71 to compress the spring, and transmits the thrust to the sliding head 91, and at the same time the sliding head 91 does not detach from the through hole, so that the vortex spring 9 can store force.

[0048] Furthermore, the sliding head 91 is located at the end of the outer ring of the vortex spring 9, and the sliding head 91 is arranged perpendicular to the vortex spring 9, and the sliding head 91 has a separate protruding section so that the section can slide with the inverted inclined surface inside the bevel surface 90, and apply pressure toward the axis center to the vortex spring 9, so as to prompt the vortex spring 9 to pre-accumulate force, and the purpose of accumulating force in the vortex spring 9 during the lowering of the lamp holder frame 3 is: the lamp holder frame 3 after maintenance or overhaul can provide lifting assistance through the vortex spring 9 to restore the deformation, reduce the lifting resistance when the lamp holder frame 3 is reset, and shorten the on-site construction period.

[0049] Furthermore, the side wall of the notch on the lamp holder 1 is provided with circumferentially arranged sockets 811, which can enable the deflected pole holder 2 to change the plug-in position of the socket 811 through the plug rod 81 to achieve the folding and locking, thereby increasing the stability of the street lamp during maintenance or inspection in the folded state; a tension spring is fixedly installed on the positioning plate 8, and a circular ring that rotates on the inner wall of the pole holder 2 is fixedly installed on the end of the tension spring, so that under the action of the tension spring, the positioning plate 8 can be adapted to be pushed horizontally by the adjustment shaft 5 to pull the plug rod 81 out of the socket 811 and unlock it, while the side wall of the pole holder 2 is provided with an eyelet for the plug rod 81 to slide, and the end of the plug rod 81 in the unlocked state is in the eyelet, so that the pole holder 2 can quickly reset the plug rod 81 after being folded down, and insert it into the socket 811 with the changed position to achieve re-locking and fixing.

[0050] By pushing the adjustment shaft member 5 into the inside of the rod base 2, the adjustment shaft member 5 is made to push the positioning plate 8 to move horizontally, and along with the insertion rod 81 being pulled out from the insertion hole 811 on the lamp base 1, at this time the insertion rod 81 retracted on the side wall of the rod base 2 completes the unlocking work of the rod base 2, enabling the rod base 2 together with the sleeve and the lamp head holder 3 thereon to be tilted and laid down. Then, with three or more workers at the maintenance site, the laid-down lamp post can be held by hand, efficiently utilizing manpower to carry out the maintenance or repair work of the lighting lamp. When the adjustment shaft member 5 is pulled outwards from the rod base 2 and is in the first working position, the square shaft 51 reaches the center vacancy of the first gear 6 and engages. And since there is no transmission between the center vacancy of the second gear 7 and the adjustment shaft member 5, the second gear 7 meshing with the bevel gear 43 transfers the idling torque to the scroll spring 9 through the sliding head 91, causing the scroll spring 9 to start storing energy and providing resistance to the rotation of the bevel gear 43. At this time, the lifting mechanism 4 is in the state of automatically lowering the lamp head holder 3 until the lifting mechanism 4 lowers the lamp head holder 3 to the lowest position under the action of gravity, and along with the scroll spring 9 reaching the maximum energy storage state, so the workers can sequentially perform the automatic lowering process on the street lamps. When there are only one or two workers at the scene, after adjusting the street lamp to the automatic state, they can leave and use the same automatic lowering process for the next street lamp, enabling this method to also adapt to the large-area maintenance or repair of street lamps, ensuring the work efficiency at the scene. When the adjustment shaft member 5 is directly pulled to the second working position, the square shaft 51 reaches the center vacancy of the second gear 7 and engages. And along with the translation of the adjustment shaft member 5, the shaft convex 53 abuts against the first gear 6 and carries the first gear 6 to translate and close to the second gear 7. Therefore, the first gear 6 is decoupled from the bevel gear 43, and the end face of the first gear 6 presses against the pressing member 71, causing the thrust to act on the sliding head 91 and slide on the inner wall of the inclined wedge surface 90, prompting the scroll spring 9 to be squeezed and pre-coiled, so as to increase the force transmitted by the scroll spring 9 towards its axis, making the force act on the side wall of the adjustment shaft member 5. The purpose is to increase the radial squeezing force of the adjustment shaft member 5 towards the axis, making it difficult for the adjustment shaft member 5 to have axial offset, so that when the worker manually rotates the adjustment shaft member 5, problems such as the working position slipping off are not easily caused, reducing the manual error. At the same time, under the combined action of the pre-storing energy and rotational energy storage of the scroll spring 9, the resistance of the manually lowered lamp head holder 3 is greater, the manual operation is easier to control, and it is also safer, avoiding situations such as the lamp head holder 3 losing speed during lowering and causing damage to the lighting lamp or injuring the workers, and it can also adapt to the situation where there is only one worker at the scene, enabling the worker to handle the street lamp repair work one-on-one, with stronger adaptability, more standardized and efficient distribution of human resources cost, and shorter park recovery period.

[0051] As a further embodiment provided by the present invention, an opening section 42 is provided at the end of the screw rod 41, and in the default state, the adjustment shaft member 5 is inserted and matched with the opening section 42.

[0052] Specifically, the opening section 42 is located at the position on the screw rod 41 where no thread is provided, specifically a columnar vacancy opened at the lower end of the screw rod 41. At the same time, the end of the adjusting shaft member 5 can be inserted into this vacancy to achieve the function of locking the rotation of the screw rod 41. A tension spring is fixedly installed between the opening section 42 and the inner wall of the rod base 2.

[0053] When the end of the adjusting shaft member 5 in the default state is horizontally placed in the vacancy of the opening section 42, the screw rod 41 cannot rotate, that is, the lamp holder 3 lifted to the predetermined position is locked and fixed, making the locking method stable and efficient. And when pulling the adjusting shaft member 5, the opening section 42 is unlocked. Therefore, when lowering the lamp holder 3, the problem that the lifting mechanism 4 cannot work will not occur. When the lamp holder 3 is laid down, the continuously inserted adjusting shaft member 5 can keep locking the screw rod 41 to avoid the loosening of the lamp holder 3 during the laying-down process.

[0054] As another embodiment further provided by the present invention, a circular shaft 52 is arranged between the square shaft 51 and the shaft convex 53. The first gear 6 in the second working position moves on the circular shaft 52, and the first gear 6 is pushed horizontally by the adjusting shaft member 5 and abuts against the side wall of the bevel gear 43.

[0055] Specifically, the circular shaft 52 is a section of the adjusting shaft member 5, so that the first gear 6 reaching here has no engaged drive, making the first gear 6 in a clamped and rotatable state, which is convenient for the edge teeth of the first gear 6 to contact the teeth of the bevel gear 43.

[0056] During the manual operation, due to a mistake, the adjusting shaft member 5 has an axial offset. Since the second gear 7 is rotatably connected to the adjusting bracket 50, the offset adjusting shaft member 5 can only translate inwardly towards the rod base 2, reducing the problem of station slippage caused by the translation direction of the adjusting shaft member 5. And because of the existence of the pressing member 71, there is an offset space for the adjusting shaft member 5 between the first gear 6 and the second gear 7, so that the square shaft 51 in the second working position maintains the engagement with the second gear 7, ensuring the stability of the working state of the station. The translated shaft convex 53 makes the first gear 6 generate a reset movement through the tension spring on the adjusting bracket 50, but the first gear 6 is still not engaged with the square shaft 51, and the spring on the pressing member 71 keeps clamping the first gear 6, making the first gear 6 in a circumferentially fixed state, and the edge teeth of the first gear 6 suddenly contact the teeth of the bevel gear 43, but the two sets of teeth are not meshed. Therefore, the first gear 6 in the clamped and fixed state brakes against the bevel gear 43, decelerating the rotating bevel gear 43. The purpose is that when there is an offset force during the manual operation of the staff, the lowering of the lamp holder 3 can be decelerated and protected, avoiding the switching of the working position of the adjusting shaft member 5 due to axial offset, and preventing problems such as the change of the lowering rate of the lamp holder 3 and the accompanying danger and damage to the lamp, thereby realizing the protection function of the lamp beads in the lamp.

[0057] As another embodiment further provided by the present invention, hoop pieces 92 arranged circumferentially are provided in the inclined wedge surface 90, and the hoop pieces 92 are pressed against the side wall of the adjusting shaft member 5 by the spring 9 at the axis center.

[0058] Specifically, the arc-shaped hoop pieces 92 are specifically elastic metal pieces, and a plurality of hoop pieces 92 are elastically pressed by the inner ring of the spring 9, so that the hoop pieces 92 can approach the side wall of the adjusting shaft member 5.

[0059] The spring 9 during the energy storage process transmits the force to the end of its inner ring, and presses the circumferentially arranged hoop pieces 92 by the inner ring of the spring 9, and makes the inner arc surface of the hoop pieces 92 contact the side wall of the adjusting shaft member 5. The purpose is to axially fix the adjusting shaft member 5 by the spring 9 during the energy storage process, so that the adjusting shaft member 5 is not prone to axial offset, ensuring the stable progress of the work station during both automatic and manual operations, and increasing the safety during the lowering process of the lamp holder 3.

[0060] As still another embodiment further provided by the present invention, the included angle between the hoop piece 92 and the adjusting shaft member 5 is adjustable under the compressed state.

[0061] Specifically, the end of the hoop piece 92 is hinged to the inner wall of the through hole for the adjusting shaft member 5 to pass through at the center of the positioning plate 8, and a torsion spring is installed at the hinged position of the hoop piece 92 (the installation method is the prior art and will not be elaborated here), so that the hoop piece 92 that is not under pressure releases the clamping of the adjusting shaft member 5.

[0062] Furthermore, a plurality of hoop pieces 92 in the default state are combined in a trapezoidal shape, and the larger port of the trapezoid faces the knob of the adjusting shaft member 5, and the diameter of the smaller port of the trapezoid is the same as the diameter of the adjusting shaft member 5.

[0063] When the spring 9 stores energy in the first working position, at this time, the inner ring of the spring 9 presses the hoop piece 92 and is used to clamp the adjusting shaft member 5. And the spring 9 in the second working position has two types: pre-curling and working energy storage. Therefore, the hoop piece 92 is subjected to more extrusion force, making the included angle between the hoop piece 92 and the adjusting shaft member 5 smaller, with more contact surfaces, increasing the limiting effect on the adjusting shaft member 5, reducing the axial offset during the rotation of the adjusting shaft member 5, and making the manual operation of lowering the lamp holder 3 more accurate and safe.

[0064] As still another embodiment further provided by the present invention, equally spaced slot sections 54 are provided on the side wall of the adjusting shaft member 5, and clamping members 93 that fit into the slot sections 54 are fixedly installed on the hoop pieces 92.

[0065] Specifically, the number of the slot sections 54 is three, corresponding to the first working position, the second working position, and the laying-down working position respectively. And the annular slot sections 54 can enable the clamping members 93 located therein to slide, facilitating the rotation of the adjusting shaft member 5, and the clamping members 93 are located on the inner side of the arc surface of the hoop pieces 92.

[0066] Furthermore, the card member 93 in the default state abuts against the inner wall of the card slot section 54. During the process of the adjusting shaft member 5 being pushed and pulled to switch the working position, the card member 93 is moved out from the port of the card slot section 54 and slides on the side wall of the adjusting shaft member 5. Along with the bending deformation and reset deformation of the hoop piece 92, the card member 93 will not interfere with the movement of the adjusting shaft member 5.

[0067] By pushing or pulling the adjusting shaft member 5, the corresponding card slot section 54 on it reaches the position of the card member 93. During the sudden recovery deformation process of the hoop piece 92, a sound is generated when the card member 93 impacts the card slot section 54 to assist in informing the staff of the working position switching situation. At the same time, the adjusting shaft member 5 can be pasted with labels or engraved with words on its side wall (the marking method is the prior art and will not be elaborated here), and the main visual judgment is made depending on the extended or retracted position of the adjusting shaft member 5 in the control room 11, so that the staff can adjust the working position according to the on-site situation. And the adjusting shaft member 5 in the current working position can be limited by the card member 93, so that the adjusting shaft member 5 is stably maintained in the rotating function, effectively reducing the axial offset problem that occurs when the adjusting shaft member 5 works.

[0068] As yet another embodiment further provided by the present invention, a ring convex 55 for abutting and cooperating with the hoop piece 92 is fixedly sleeved on the adjusting shaft member 5.

[0069] Specifically, one end of the annular ring convex 55 is a plane, and the other end is an inclined surface. The plane end is used to abut against the inner wall of the rod seat 2 to prevent the adjusting shaft member 5 from being pulled out of the rod seat 2, realizing the protection of the adjusting shaft member 5, while the inclined surface end is used to abut against a plurality of hoop pieces 92 in the open state, aiming to push the positioning plate 8 to move to unlock the rod seat 2.

[0070] During the process of pushing the adjusting shaft member 5, the inclined surface on the ring convex 55 abuts against the inner arc surface of the ends of a plurality of hoop pieces 92. During the embedding process, the ring convex 55 and the deformed hoop piece 92 are tightly connected. At this time, continuing to apply a thrust force can adjust the position of the positioning plate 8, facilitating the unlocking of the rod seat 2 by the insertion rod 81. And during this process, the card member 93 can still be snap-fitted with one of the card slot sections 54 to provide further connection assistance for the tightly connected ring convex 55.

[0071] As yet another embodiment further provided by the present invention, an arc protrusion 82 is fixedly installed on the positioning plate 8, and a contact frame 821 that slides in the rod seat 2 is movably sleeved on the screw rod 41. The ring convex 55 and the hoop piece 92 in the engaged state rotate synchronously, so that the arc protrusion 82 pushes the contact frame 821 to move upward to increase the stroke of the screw rod 41.

[0072] Specifically, the arc-shaped protrusion 82 is located at the upper end of the positioning plate 8, and the radian of the arc-shaped protrusion 82 gradually increases. After the positioning plate 8 rotates, the insertion rod 81 can still be inserted into the circumferentially arranged insertion holes 811 for use.

[0073] Furthermore, the contact receiving frame 821 is used to provide support for the rotation position of the screw rod 41. The contact receiving frame 821 that vertically slides in the rod base 2 can also increase the stroke provided by the screw rod 41 to the lifting mechanism 4, so as to increase the illumination height of the lamp head frame 3.

[0074] Even further, symmetrically arranged sliding strips are fixedly installed on the screw rod 41, and channels for the sliding strips to slide are provided on the inner walls of the limiting cylinder 431 and the bevel gear 43, so that the screw rod 41 after the stroke is increased can still rotate and drive through the sliding strips, ensuring the power transmission of the bevel gear 43.

[0075] After the maintenance or repair of the street lamp is completed and with manual support, the ring protrusion 55 and the hoop piece 92 are again formed into a tightly connected fitting state. The adjusting shaft member 5 is rotated alone, and the adjusting shaft member 5 drives the positioning plate 8 to rotate under the action of friction, so that the original insertion position of the insertion rod 81 into the insertion hole 811 is changed. Thus, the contact receiving frame 821 is lifted and moved by using the gradually increasing radian on the arc-shaped protrusion 82. Therefore, the stroke of the screw rod 41 will increase, the illumination range of the street lamp will increase, and the street lamp can also adapt to the problem of light source occlusion caused by the growth of vegetation in the park.

[0076] As yet another embodiment further provided by the present invention, a limiting protrusion 94 is fixedly installed on the scroll spring 9 and is embedded between adjacent hoop pieces 92. The limiting protrusion 94 makes the deformation and curling direction of the scroll spring 9 opposite to the rotation direction of the positioning plate 8.

[0077] Specifically, the limiting protrusion 94 is located at the inner ring end of the scroll spring 9. On the one hand, it can fix one end of the scroll spring 9, facilitating the energy storage of the scroll spring 9. On the other hand, it can also ensure that the force received by the scroll spring 9 is stably transmitted to the hoop piece 92 for limiting work.

[0078] Furthermore, the spiral opening direction of the scroll spring 9 is the same as the rotation direction of the positioning plate 8, that is, when the positioning plate 8 rotates, the scroll spring 9 can gradually relax, which is used to increase the energy storage range of the scroll spring 9.

[0079] By limiting the limiting protrusion 94 between the two hoop pieces 92, and then cooperating with the radially outward force generated by the opened hoop pieces 92 and making the force act on the limiting protrusion 94 to achieve the function of compaction and fixation, the inner ring of the scroll spring 9 is tightened. At the same time, when the positioning plate 8 rotates, along with the relaxation of the scroll spring 9 in its opening direction, the purpose is to increase the energy storage ability of the scroll spring 9, make the scroll spring 9 match the screw rod 41 with an increased stroke, and realize the full-process buffering and protection of the lamp head frame 3 during the lowering of the scroll spring 9, ensuring the safety during the maintenance or repair of the street lamp.

[0080] Working principle: By pushing the adjusting shaft member 5 into the inside of the rod base 2, the adjusting shaft member 5 is made to push the positioning plate 8 to move horizontally, and along with the insertion rod 81 being pulled out from the insertion hole 811 on the lamp base 1, at this time the insertion rod 81 retracted on the side wall of the rod base 2 completes the unlocking of the rod base 2, so that the rod base 2 together with the sleeve and the lamp head holder 3 thereon can be tilted and laid down. When pulling the adjusting shaft member 5 outwards from the rod base 2 and being in the first working position, the square shaft 51 reaches and engages with the vacant position at the center of the first gear 6. At this time, the second gear 7 meshing with the bevel gear 43 transmits the idling torque to the scroll spring 9 through the sliding head 91, so that the scroll spring 9 starts to store energy and provides resistance to the rotation of the bevel gear 43. At this time, the lifting mechanism 4 is in the state of automatically lowering the lamp head holder 3 until the lifting mechanism 4 lowers the lamp head holder 3 to the lowest position under the action of gravity, and along with the scroll spring 9 reaching the maximum energy storage state. Therefore, the staff can sequentially perform the automatic lowering process on the street lamp. When directly pulling the adjusting shaft member 5 to the second working position, the square shaft 51 reaches and engages with the vacant position at the center of the second gear 7, and along with the translating adjusting shaft member 5 making the shaft convex 53 abut against the first gear 6 and carrying the first gear 6 to translate and close to the second gear 7. Therefore, the first gear 6 is decoupled from the bevel gear 43, and the end face of the first gear 6 presses against the pressing member 71, so that the thrust acts on the sliding head 91 and slides on the inner wall of the inclined wedge surface 90, prompting the scroll spring 9 to be squeezed and pre-curled in advance, so as to increase the force transmitted by the scroll spring 9 to its axis, making the force act on the side wall of the adjusting shaft member 5. The purpose is to increase the radial squeezing force of the adjusting shaft member 5 towards the axis, so that the adjusting shaft member 5 is not prone to axial offset. At the same time, under the combined action of the scroll spring 9 having pre-stored energy and rotational energy storage, the resistance of the manually lowered lamp head holder 3 is greater and the manual operation is easier to control.

[0081] Only some exemplary embodiments of the present invention are described by way of illustration. Undoubtedly, for those of ordinary skill in the art, without departing from the spirit and scope of the present invention, the described embodiments can be modified in various different ways. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A liftable lamp pole, comprising a lamp holder frame (3), characterized in that: Also included is a lamp holder (1) movably provided with a rod seat (2), wherein the rod seat (2) is provided with a lifting mechanism (4) for making the height of the lamp holder frame (3) adjustable, wherein the lifting mechanism (4) is provided with a screw rod (41) for assembling a bevel gear (43), wherein the lamp holder (1) is movably provided with an adjustment shaft member (5) in the rod seat (2), wherein the rod seat (2) is provided with a first gear (6) and a second gear (7) for meshing with the bevel gear (43); The rod seat (2) is also provided with a positioning plate (8) having an oblique face (90), the oblique face (90) having a vortex spring (9) whose end is used to press and fix the adjustment shaft member (5), and the vortex spring (9) is fixedly mounted with a sliding head (91) that is plug-fitted with the second gear (7); The positioning plate (8) is fixedly mounted with arc-shaped insertion rods (81) arranged at equal intervals, and the adjustment shaft (5) is pushed toward the inside of the rod seat (2) so that the adjustment shaft (5) pushes the insertion rods (81) to unlock the rod seat (2); A square shaft (51) is fixedly sleeved on the adjusting shaft member (5), and a shaft protrusion (53) is arranged at a relative position of the square shaft (51). The square shaft (51) is translated in the horizontal direction to cooperate with the first gear (6) and the second gear (7) respectively and is used to form the following two workstations: At the first workstation, the square shaft (51) engages with the first gear (6), causing the second gear (7) to mesh with the bevel gear (43) and rotate to store force in the vortex spring (9); At the second workstation, the square shaft (51) engages with the second gear (7), and the shaft protrusion (53) pulls the first gear (6) to decouple the bevel gear (43), and when the first gear (6) and the second gear (7) are close together, the first gear (6) pushes the sliding head (91) and the bevel surface (90) to slide and cooperate, so that the vortex spring (9) is wound up and recharged; A round shaft (52) is arranged between the square shaft (51) and the shaft protrusion (53), and the first gear (6) under the second station moves on the round shaft (52), and the first gear (6) is pushed horizontally by the adjustment shaft (5) to abut against the side wall of the bevel gear (43).

2. The liftable lamp pole according to claim 1, characterized in that: An opening section (42) is provided at the end of the screw rod (41), and the adjustment shaft (5) is plug-fitted with the opening section (42) in a default state.

3. The liftable lamp pole according to claim 2, characterized in that: The beveled surface (90) is provided with circumferentially arranged clamping hoop pieces (92), and the clamping hoop pieces (92) are squeezed by the axis of the vortex spring (9) to fit the side wall of the adjustment shaft (5).

4. The liftable lamp pole according to claim 3, characterized in that: In a compressed state, the angle between the clamping hoop plate (92) and the adjusting shaft member (5) is adjustable.

5. The liftable lamp pole according to claim 4, characterized in that: The side wall of the adjustment shaft member (5) is provided with slot sections (54) arranged at equal intervals, and a clamping member (93) engaged with the slot sections (54) is fixedly mounted on the clamping hoop plate (92).

6. The liftable lamp pole according to claim 5, characterized in that: The fixing sleeve on the adjusting shaft member (5) is provided with an annular protrusion (55) for pushing and fitting against the clamping hoop plate (92).

7. The liftable lamp pole according to claim 6, characterized in that: The positioning plate (8) is fixedly mounted with an arc protrusion (82), and the screw rod (41) is movably sleeved with a contact frame (821) that slides in the rod seat (2). The engaged annular protrusion (55) and the hoop plate (92) rotate synchronously, so that the arc protrusion (82) pushes the contact frame (821) upward to increase the stroke of the screw rod (41).

8. The liftable lamp pole according to claim 7, characterized in that: A limiting protrusion (94) embedded between adjacent hoop plates (92) is fixedly mounted on the vortex spring (9), and the limiting protrusion (94) causes the vortex spring (9) to deform and curl in a direction opposite to the rotation direction of the positioning plate (8).

9. A street lamp, characterized in that: A liftable lamp pole comprising any one of claims 1 to 8.

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