CN213362217U

CN213362217U - Self-locking type safe lifting street lamp

Info

Publication number: CN213362217U
Application number: CN202022843636.6U
Authority: CN
Inventors: 陈傲
Original assignee: Anhui University of Technology AHUT
Current assignee: Anhui University of Technology AHUT
Priority date: 2020-12-01
Filing date: 2020-12-01
Publication date: 2021-06-04
Anticipated expiration: 2030-12-01

Abstract

The utility model discloses a from locking-type safe street lamp that goes up and down belongs to street lamp technical field. The lamp post comprises a lamp post and a lifting rod, wherein the lifting rod can be vertically and slidably arranged in the lamp post, the lifting rod comprises a cross rod and a self-locking pin which are mutually perpendicular and fixedly connected, and a movable clamp matched with the self-locking pin is correspondingly arranged on the lamp post and used for self-locking of the lifting rod; and the self-locking pin is also provided with an avoiding groove for relieving self-locking. Adopt the technical scheme of the utility model can change the street lamp bulb effectively, avoid the tradition to adopt lift truck or ladder to change the street lamp bulb, simple structure, it is easy and simple to handle, the safe risk is low, and the practicality is strong.

Description

Self-locking type safe lifting street lamp

Technical Field

The utility model belongs to the technical field of the street lamp device, more specifically say, relate to a from locking-type safe street lamp that goes up and down.

Background

With the development of society, more and more roads are equipped with street lamps for providing illumination for the roads. The existing street lamp generally comprises a lamp post and a bulb, wherein a transverse supporting rod is arranged on one side or two sides of the top of the lamp post, and the bulb is arranged on one side or two sides of the lamp post through the supporting rod on the top of the lamp post.

The theoretical service life of a common street lamp bulb is ten thousand hours, but due to the reasons of unstable self-quality, unstable voltage, poor lamp shell heat dissipation and the like, a plurality of bulbs are burnt out before reaching the theoretical service life, and therefore, the bulbs need to be replaced by workers. Because the lamp body is higher, traditional bulb replacement mode adopts lift truck or ladder to change the bulb generally, and its change process is very inconvenient, and has certain safety risk. At present, some liftable street lamps are also available in the market, but the street lamps are complex in structure and inconvenient to operate, and the bulb of the street lamp cannot be effectively replaced.

Through retrieval, relevant patents on the lifting street lamp are disclosed. For example, the application with the chinese patent application No. 201310159653.X discloses a lifting street lamp and a lifting method thereof, the lifting street lamp includes a straight bar and a cross bar connected to the upper portion of the straight bar, a lamp shade is provided at the end of the cross bar, a winch is provided on the straight bar, the winch is connected with a rope, a first pulley is provided at the top of the straight bar, and a second pulley is provided on the cross bar; a lifting rod is arranged below the cross rod; the rope passes through the first pulley, the second pulley and the cross rod and then is connected with the lifting rod; the lifting rod is provided with a guide block, the guide block is provided with a positioning hole and a guide hole, and the cross rod is provided with a guide rod matched with the guide hole; the lamp comprises a lamp body, a lamp shade, a lifting rod, an electric connection block, a lamp holder and a lamp holder, wherein the electric connection block is arranged at the end part of the lifting rod, the electric connection block is provided with a pin and the lamp holder which is electrically connected with the pin through an electric wire, the lamp holder is connected with the lamp body, a power supply block is fixedly arranged in the lamp shade, and a jack piece which is matched with the pin and is positioned right above. Although the damaged lamp body can be lowered down, the lamp body lifting structure of the application has certain safety risk, and the overall design of the lamp body lifting structure needs to be further improved.

SUMMERY OF THE UTILITY MODEL

1. Problems to be solved

The utility model aims to solve the tradition and adopt lift truck or ladder to change the operation inconvenient when the street lamp bulb, have certain safe risk, but the liftable street lamp structure on the market is comparatively complicated, operates inconveniently, can not effectively change the problem of bulb, provides one kind from locking-type safe lift street lamp. Adopt the technical scheme of the utility model can change the street lamp bulb effectively, avoid the tradition to adopt lift truck or ladder to change the street lamp bulb, simple structure, it is easy and simple to handle, the safe risk is low, and the practicality is strong.

2. Technical scheme

In order to solve the above problem, the utility model discloses the technical scheme who adopts as follows:

the utility model discloses a self-locking safety lifting street lamp, which comprises a lamp post and a lifting rod, wherein the lifting rod can be vertically and slidably arranged in the lamp post, the lifting rod comprises a cross rod and a self-locking pin which are mutually vertical and fixedly connected, and a movable clamp matched with the self-locking pin is correspondingly arranged on the lamp post and is used for self-locking of the lifting rod; and the self-locking pin is also provided with an avoiding groove for relieving self-locking.

Furthermore, the self-locking pin comprises a connecting rod, a sliding rod and a self-locking piece which are sequentially connected from bottom to top, the connecting rod is fixedly connected with the cross rod, and the avoiding groove is formed in the connecting position of the connecting rod and the sliding rod; the self-locking pieces comprise a plurality of pieces which are arranged at the top of the sliding rod and symmetrically distributed along the circumferential direction of the sliding rod, and the self-locking pieces are matched with the movable clamp.

Furthermore, the number of the movable cards is matched with that of the self-locking pieces, one end of each movable card is rotatably arranged on the lamp post through a torsional spring, the other end of each movable card can be attached to the side face of the corresponding sliding rod, and the movable cards face upwards during attachment.

Furthermore, a rotating ring is formed between the front ends of the movable clamps in an enclosing mode, and the minimum diameter of the rotating ring is smaller than the diameter of the sliding rod and larger than the diameter of the corresponding shaft rod at the avoidance groove.

Furthermore, the top of the sliding rod is also provided with a conical head.

Furthermore, the lifting rod is fixedly connected with one end of the pull rope, and the other end of the pull rope penetrates through the pulley mechanism at the top of the lamp post and falls on the side face of the lamp post.

Furthermore, the pulley mechanism comprises a first pulley, a second pulley and a third pulley, the third pulley is rotatably mounted at the top of the lamp post through a second hinge frame, and the second pulley is rotatably mounted on the second hinge frame through a rotating rod; the first pulley is rotatably installed at the top of the lamp pole through the first hinge frame and slides left and right along the pull rope, the second pulley and the third pulley are both positioned below the first pulley, and the pull rope passes through the first pulley, the second pulley and the third pulley and then falls on the side face of the lamp pole.

Furthermore, the first hinge frame is of an L-shaped structure, one end of the first hinge frame is fixedly arranged at the top of the lamp post, the other end of the first hinge frame is provided with a sliding groove, and the first pulley is rotatably arranged in the sliding groove and can slide left and right along the sliding groove; and a spring or a rubber band is connected between the rotating shaft of the second pulley and the first hinge frame above the rotating shaft.

Furthermore, a supporting block is processed at the top of the lamp post and correspondingly located below the rotating rod.

Furthermore, a through lifting groove is correspondingly formed in the side wall of the lamp post in the vertical direction, and a cross rod used for mounting a bulb on the lifting rod can penetrate through the lifting groove and slide up and down; the top of the lamp pole is also provided with an enclosure.

3. Advantageous effects

Compared with the prior art, the beneficial effects of the utility model are that:

(1) the utility model discloses a from locking-type safe lift street lamp, through carrying out the optimal design to its structure, utilize the lifter to realize the lift of bulb, and it is equipped with the activity card to correspond on the lamp pole, set up from the lockpin on the lifter, and still be equipped with on the lockpin and dodge the groove, utilize the auto-lock that the auto-lock of cooperation realization lifter of activity card and self-lockpin, and utilize and dodge the groove and remove the auto-lock, thereby can effectively realize the elevating action of lifter, be convenient for change the bulb on the lifter, the safety risk has effectively been reduced, avoided tradition adoption lift truck or ladder to change the street lamp bulb, a structure is simple, and the operation is simple and convenient, therefore, the clothes.

(2) The utility model discloses a self-locking safe lifting street lamp, through carrying out the optimal design to the concrete structure of self-locking pin, can rotate the activity card through the torsional spring and install on the lamp pole, utilize the self-locking plate on the self-locking pin to cooperate with the activity card on the lamp pole, when making the lifter move down, the self-locking plate blocks the activity card that is laminated with the slide bar, because the activity card is up when laminating, thus prevent the lifter to continue to move down, realize the auto-lock; then, an avoiding groove is designed at the joint of the connecting rod and the sliding rod, so that the movable clamp does not contact with the lifting rod when moving to the avoiding groove, and the movable clamp returns to a horizontal position under the action of the torsion spring, so that the downward movement of the lifting rod is not hindered, the self-locking is released, the lifting rod and the bulb smoothly move downward, the bulb is convenient to replace, and the bulb replacing device is simple and ingenious in structure, convenient to operate and good in safety.

(3) The utility model discloses a from locking-type safe lift street lamp, realize the lift of lifter through utilizing the stay cord, link to each other stay cord one end and lifter, pass the pulley gear at lamp pole top with the stay cord other end and drop to the lamp pole side, and optimize the concrete structure of this pulley gear, through setting up three rotatable pulleys at the lamp pole top, can install the second pulley on the second articulated frame through the dwang is rotatable, and the first pulley slides along the stay cord from side to side, again all be located the first pulley below with second pulley and third pulley, and be connected with spring or rubber band between second pulley axis of rotation and the first articulated frame top, thereby when pulling the stay cord of lamp pole side, can make the second pulley rotate downwards around the third pulley pivot, make the stay cord stimulate the lifter to move upwards smoothly; and if when releasing the stay cord of lamp pole side suddenly, the second pulley upwards rotates around third pulley pivot under the effect of spring or rubber band, can make stay cord and first pulley contact, drives first pulley and slides to the direction that is close to the third pulley, finally makes first pulley and the dead stay cord of third pulley card, avoids the abrupt downstream of lifter to lead to equipment such as bulb to damage, has also further reduced the risk simultaneously.

Drawings

Fig. 1 is a schematic view of the overall structure of the elevating street lamp of the present invention;

fig. 2 is a schematic structural view of the fitting installation of the lifting rod and the lamp post of the present invention;

FIG. 3 is a schematic structural view of the movable clip and the torsion spring of the present invention;

fig. 4 is a schematic structural view of the lifting rod of the present invention;

FIG. 5 is a schematic structural view of the movable clip of the present invention installed in cooperation with the lifting rod;

fig. 6 is a schematic structural view of the cooperation installation of the pulling rope and each pulley of the present invention.

In the figure: 1. a lamp post; 101. a lifting groove; 102. mounting grooves; 103. a support block; 2. a base; 3. a lifting rod; 301. a cross bar; 302. a connecting rod; 303. an avoidance groove; 304. a slide bar; 305. a self-locking plate; 306. a conical head; 4. an enclosure; 5. pulling a rope; 6. a movable card; 601. a through hole; 602. a bevel; 7. a rotating shaft; 8. a torsion spring; 9. a first hinge frame; 901. a sliding groove; 902. a first connection point; 10. a first pulley; 11. a second hinge frame; 12. rotating the rod; 1201. a second connection point; 13. a second pulley; 14. and a third pulley.

Detailed Description

The present invention will be further described with reference to the following specific embodiments.

Example 1

As shown in fig. 1 and fig. 2, the self-locking safe lifting street lamp of this embodiment includes a lamp post 1 and a lifting rod 3, the lifting rod 3 is slidably installed in the lamp post 1 up and down, the lifting rod 3 includes a cross rod 301 and a self-locking pin that are perpendicular to each other and fixedly connected, two sides of the cross rod 301 can be used for installing a bulb, a through lifting groove 101 is correspondingly formed in vertical direction on two symmetrical side walls of the lamp post 1, and the cross rod 301 can pass through the lifting groove 101 and slide up and down. The lamp post 1 is correspondingly provided with a movable clamp 6 matched with the self-locking pin for self-locking of the lifting rod 3; and an avoiding groove 303 is further formed in the self-locking pin and used for relieving self-locking. This embodiment is through utilizing lifter 3 to realize the lift of bulb, the activity card 6 of utilizing 1 installation of lamp pole mutually supports with the self-locking pin on the lifter 3, realize lifter 3's auto-lock, and utilize on the self-locking pin to dodge groove 303 and remove the auto-lock, thereby can effectively realize lifter 3's elevating action, be convenient for change the bulb on the lifter 3, effectively reduced safe risk, the tradition has been avoided adopting lift truck or ladder to change the street lamp bulb, a structure is simple, and is easy and simple to handle, therefore, the clothes hanger is strong in practicability.

Specifically, as shown in fig. 4, the self-locking pin includes a connecting rod 302, a sliding rod 304 and a self-locking piece 305, which are connected in sequence from bottom to top, the connecting rod 302 is fixedly installed in the middle of the cross rod 301, and the avoiding groove 303 is arranged at the connection position of the connecting rod 302 and the sliding rod 304, that is, the connection position of the connecting rod 302 and the sliding rod 304 is inwardly grooved to form a thin shaft rod; the self-locking pieces 305 are multiple and specifically designed four, the self-locking pieces 305 are semicircular and correspondingly arranged at the top of the sliding rod 304 and symmetrically distributed along the circumferential direction of the sliding rod, and the self-locking pieces 305 are arranged in a downward direction, so that the self-locking pieces 305 can be matched with the movable card 6 to realize self-locking. The number of the movable clips 6 is matched with the number of the self-locking pieces 305, as shown in fig. 3 and 5, a mounting groove 102 is formed in a corresponding position on the lamp post 1, a rotating shaft 7 is fixedly arranged in the mounting groove 102, one end of each movable clip 6 is provided with a through hole 601, the movable clips 6 are rotatably mounted on the rotating shaft 7 through the through holes 601, a torsion spring 8 is further mounted at the rotating position, and the upper surface of each movable clip 6 can keep a horizontal position when not contacting with a self-locking pin by using the torsion spring 8; the other end of the movable card 6 is provided with an inclined surface 602, the inclined surface 602 can be attached to the side surface of the sliding rod 304, and the movable card 6 faces upwards during attachment. This embodiment is through carrying out optimal design to the concrete structure of self-locking pin, and it is rotatable to install activity card 6 on lamp pole 1 through torsional spring 8, utilizes self-locking plate 305 on the self-locking pin to mutually support with activity card 6 on the lamp pole 1, when making lifter 3 downstream, blocks the activity card 6 of laminating mutually with slide bar 304 from locking plate 305, because activity card 6 during the laminating up to prevent lifter 3 to continue downstream, realize the auto-lock. Then, an avoiding groove 303 is designed at the joint of the connecting rod 302 and the sliding rod 305, so that the lifting rod 3 does not contact with the lifting rod 3 when the movable clamp 6 is positioned at the avoiding groove 303 after moving upwards again, the movable clamp 6 returns to a horizontal position under the action of the torsion spring 8, the lifting rod 3 moves downwards at the moment, the sliding rod 304 of the lifting rod contacts with the upper surface of the movable clamp 6 and can rotate downwards smoothly, the downward movement of the lifting rod is not hindered at the moment, the self-locking is relieved, the lifting rod 3 and the bulb move downwards smoothly, the bulb is convenient to replace, and the bulb replacement device is simple and ingenious in structure, convenient to operate and good in safety. The front ends of the movable clamps 6 are surrounded to form a rotating ring, when the upper surfaces of the movable clamps 6 are positioned at a horizontal position, the diameter of the rotating ring is minimum, and the minimum diameter of the rotating ring is smaller than that of the sliding rod 304 (the sliding rod 304 can be a round rod or a square rod, and the square rod is adopted in the figure), so that when the lifting rod 3 passes through the movable clamps 6, the movable clamps 6 can be attached to the sliding rod 304, and the movable clamps 6 are obliquely upward, so that the movable clamps 6 can be smoothly clamped by the self-locking plate 305, and a self-locking function is realized; the minimum diameter of the rotating ring is also larger than the diameter of the shaft lever corresponding to the avoidance groove 303, so that when the lifting rod 3 moves upwards until the movable clamp 6 is positioned in the avoidance groove 303, the movable clamp 6 is not in contact with the lifting rod 3, the movable clamp 6 returns to the horizontal position, the lifting rod 3 moves downwards, the sliding rod 304 of the lifting rod contacts with the upper surface of the movable clamp 6, and the lifting rod can smoothly rotate downwards to relieve self-locking. The top of slide bar 304 still is equipped with conical head 306, be convenient for lifter 3 to pass activity card 6 and rise, when lifter 3 from below upward movement, conical head 306 part is when contacting activity card 6 for the first time, make activity card 6 upwards rotate, lifter 3 from below upward movement promptly, through conical head 306 and auto-lock piece 305, when arriving the slide bar 304, the laminating slide bar 304 of activity card 6, can loosen the ascending power of messenger's lifter this moment, lifter 3 then can be because from locking plate 305 can't descend with the cooperation of activity card 6, realize the auto-lock.

As shown in fig. 6, the lifting rod 3 is lifted by a pull rope 5, one end of the pull rope 5 passes through the lifting rod 3 and is fixedly connected with the lifting rod, and the other end of the pull rope 5 passes through a pulley mechanism at the top of the lamp pole 1 and falls on the side of the lamp pole 1. Specifically, the pulley mechanism includes first pulley 10, second pulley 13 and third pulley 14, third pulley 14 passes through second articulated frame 11 rotatable mounting in lamp pole 1 top, and second pulley 13 passes through dwang 12 rotatable mounting on second articulated frame 11. The first pulley 10 is rotatably mounted on the top of the lamp post 1 through the first hinge frame 9 and slides left and right along the pull rope 5, that is, the first hinge frame 9 is an L-shaped structure, one end of the first hinge frame is fixedly mounted on the top of the lamp post 1, the other end of the first hinge frame is provided with a sliding groove 901, and the first pulley 10 is rotatably mounted in the sliding groove 901 and can slide left and right along the sliding groove 901. The second pulley 13 and the third pulley 14 are both located below the first pulley 10, the pull rope 5 passes through the first pulley 10, the second pulley 13 and the third pulley 14 and then falls on the side surface of the lamp pole 1, and an operator can pull the pull rope 5 by hand to enable the lifting rod 3 and the lamp bulb to ascend or descend. A spring or a rubber band is connected between the rotating shaft of the second pulley 13 and the first hinge frame 9 above the rotating shaft, and as shown in fig. 6, the two connecting points of the spring or the rubber band can be respectively arranged at the first connecting point 902 and the second connecting point 1201. In the embodiment, the lifting of the lifting rod 3 is realized by using the pull rope 5, one end of the pull rope 5 is connected with the lifting rod 3, the other end of the pull rope 5 passes through the pulley mechanism at the top of the lamp post 1 and falls on the side surface of the lamp post 1, meanwhile, the specific structure of the pulley mechanism is optimized, three rotatable pulleys are arranged at the top of the lamp post 1, the second pulley 13 is rotatably arranged on the second hinge frame 11 through a rotating rod, the first pulley 10 can slide left and right along the pull rope 5, the second pulley 13 and the third pulley 14 are both positioned below the first pulley 10, and a spring or a rubber band is connected between the rotating shaft of the second pulley 13 and the top of the first hinge frame 9, so that when the pull rope 5 at the side surface of the lamp post 1 is pulled, the second pulley 13 can rotate downwards around the rotating shaft of the third pulley 14, and the pull rope 5 can smoothly pull the lifting rod 3; and if release the stay cord 5 of lamp pole 1 side suddenly, second pulley 13 upwards rotates around the 14 pivots of third pulley under the effect of spring or rubber band, can make stay cord 5 and first pulley 10 contact, drives first pulley 10 and slides to the direction that is close to third pulley 14, finally makes first pulley 10 and the card of third pulley 14 die stay cord 5, avoids lifter 3 sudden downward movement to lead to equipment damages such as bulb, has also further reduced the risk simultaneously. When the pulling rope 5 is pulled again, the pulling rope 5 is in contact with the first pulley 10, the first pulley 10 is driven to slide in the direction away from the third pulley 14, the second pulley 13 can rotate downwards around the rotating shaft of the third pulley 14, the lifting rod 3 is smoothly pulled by the pulling rope 5 to move upwards, and self-locking is relieved. The supporting block 103 is processed at the top of the lamp post 1, the supporting block 103 is correspondingly positioned below the rotating rod 12, the second pulley 13 is prevented from rotating downwards to contact with the top of the lamp post 1, and smooth work of the pulley mechanism is guaranteed. The bottom of the lamp post 1 is provided with a base 2, so that the street lamp can be arranged on the road surface; the top of the lamp post is also provided with an enclosure 4, the pulley mechanism can be arranged in the enclosure, the side surface of the enclosure 4 is correspondingly provided with a through hole, and the stretching 5 is convenient to pass through the enclosure 4 and hang down on the side surface of the lamp post 1.

When the bulb is positioned above the lamp pole 1, the movable clamp 6 can be attached to the sliding rod 304 and clamped with the self-locking piece 305, and the lifting rod 3 is locked to be positioned at a fixed height; when a bulb needs to be replaced, the pull rope on the side surface of the lamp post 1 is pulled downwards, at the moment, the second pulley 13 rotates downwards around the rotating shaft of the third pulley 14, the pull rope 5 smoothly pulls the lifting rod 3 to move upwards, when the lifting rod 3 moves upwards to the position where the movable clamp 6 is located in the avoidance groove 303, the movable clamp 6 returns to the horizontal position under the action of the torsion spring 8, self-locking is removed, then the pull rope on the side surface of the lamp post 1 is slowly released, the lifting rod 3 and the bulb slowly move downwards to a proper height, then the pull rope 5 is completely released, the pull rope 5 drives the first pulley 10 on the top to move towards the direction close to the third pulley 14, and finally the pull rope 5 is clamped by the first pulley 10 and the third pulley 14, so that the lifting rod 3 and the bulb are fixed, and the; after the replacement, the pull rope 5 is pulled again, so that the lifting rod 3 moves upwards to the conical head 306 at the top of the sliding rod 304 and the self-locking plate 305 passes through the movable clamp 6, the movable clamp 6 is attached to the sliding rod 304 again, then the pull rope 5 is released, the movable clamp 6 and the self-locking plate 305 are clamped again, the self-locking is realized, and the lifting rod 3 and the bulb are located at a fixed height.

Claims

1. The utility model provides a from locking-type safe street lamp that goes up and down which characterized in that: the lamp post comprises a lamp post (1) and a lifting rod (3), wherein the lifting rod (3) can be installed in the lamp post (1) in a vertically sliding mode, the lifting rod (3) comprises a cross rod (301) and a self-locking pin which are perpendicular to each other and fixedly connected, and a movable clamp (6) matched with the self-locking pin is correspondingly arranged on the lamp post (1) and used for self-locking of the lifting rod (3); and an avoiding groove (303) is also arranged on the self-locking pin and used for relieving self-locking.

2. The self-locking safety lifting street lamp according to claim 1, characterized in that: the self-locking pin comprises a connecting rod (302), a sliding rod (304) and a self-locking piece (305) which are sequentially connected from bottom to top, the connecting rod (302) is fixedly connected with the cross rod (301), and the avoidance groove (303) is arranged at the connecting position of the connecting rod (302) and the sliding rod (304); the self-locking plates (305) comprise a plurality of self-locking plates (305), the self-locking plates are arranged at the top of the sliding rod (304) and are symmetrically distributed along the circumferential direction of the sliding rod, and the self-locking plates (305) are matched with the movable card (6).

3. The self-locking safety lifting street lamp according to claim 2, characterized in that: the quantity of activity card (6) and the quantity phase-match of self-locking piece (305), this activity card (6) one end is passed through torsional spring (8) rotatable the installation on lamp pole (1), and its other end can laminate mutually with slide bar (304) side, and activity card (6) up during the laminating.

4. The self-locking safety lifting street lamp according to claim 3, characterized in that: the front ends of the movable clamps (6) are surrounded to form a rotating ring, and the minimum diameter of the rotating ring is smaller than the diameter of the sliding rod (304) and larger than the diameter of the corresponding shaft rod at the avoidance groove (303).

5. The self-locking safety lifting street lamp according to claim 4, characterized in that: the top of the sliding rod (304) is also provided with a conical head (306).

6. The self-locking type safe elevating street lamp according to any one of claims 1 to 5, characterized in that: the lifting rod (3) is fixedly connected with one end of the pull rope (5), and the other end of the pull rope (5) penetrates through a pulley mechanism at the top of the lamp pole (1) and falls on the side face of the lamp pole (1).

7. The self-locking safety lifting street lamp according to claim 6, characterized in that: the pulley mechanism comprises a first pulley (10), a second pulley (13) and a third pulley (14), the third pulley (14) is rotatably arranged at the top of the lamp pole (1) through a second hinge frame (11), and the second pulley (13) is rotatably arranged on the second hinge frame (11) through a rotating rod (12); first pulley (10) are rotatable to be installed in lamp pole (1) top through first articulated frame (9) to along stay cord (5) horizontal slip, second pulley (13) and third pulley (14) all are located first pulley (10) below, stay cord (5) fall behind first pulley (10), second pulley (13) and third pulley (14) lamp pole (1) side.

8. The self-locking safety lifting street lamp according to claim 7, characterized in that: the first hinged frame (9) is of an L-shaped structure, one end of the first hinged frame is fixedly arranged at the top of the lamp post (1), the other end of the first hinged frame is provided with a sliding groove (901), and the first pulley (10) can be rotatably arranged in the sliding groove (901) and can slide left and right along the sliding groove (901); and a spring or a rubber band is connected between the rotating shaft of the second pulley (13) and the first hinge frame (9) above the rotating shaft.

9. The self-locking safety lifting street lamp according to claim 8, characterized in that: the lamp post is characterized in that a supporting block (103) is machined at the top of the lamp post (1), and the supporting block (103) is correspondingly positioned below the rotating rod (12).

10. The self-locking type safe elevating street lamp according to any one of claims 1 to 5, characterized in that: a through lifting groove (101) is correspondingly formed in the side wall of the lamp post (1) in the vertical direction, and a cross rod (301) used for mounting a bulb on the lifting rod (3) can penetrate through the lifting groove (101) and slide up and down; the top of the lamp pole (1) is also provided with an enclosure (4).