CN214536052U

CN214536052U - Mounting bracket for engineering construction illumination

Info

Publication number: CN214536052U
Application number: CN202120294996.7U
Authority: CN
Inventors: 纪炳亮
Original assignee: Shenzhen Hua'an Engineering Co ltd
Current assignee: Shenzhen Hua'an Engineering Co ltd
Priority date: 2021-02-02
Filing date: 2021-02-02
Publication date: 2021-10-29
Anticipated expiration: 2031-02-02

Abstract

The utility model discloses a mounting bracket is used in engineering construction illumination, first disc and mounting panel and the vertical sleeve pipe of placing including the level are placed, four rectangular channels that are the distribution of annular array have all been opened to first disc periphery, and have all opened the spout in four rectangular channels relative one side, and all rotate in two relative spouts and be connected with the bull stick that same level was placed, four the bull stick outer wall all overlaps and is equipped with the cylinder that the level was placed, and all is equipped with the locating component who is used for fixed cylinder in four rectangular channels, the second disc that first disc top fixedly connected with level was placed, and second disc top middle part and sleeve pipe bottom fixed connection. The utility model discloses a set up the gyro wheel, can freely remove the mounting bracket, convenient operation alleviates working strength, has also improved the flexibility, cooperates supporting seat and the cylinder that sets up for the lighting process is more stable, has improved the illuminating effect, reduces the potential safety hazard.

Description

Mounting bracket for engineering construction illumination

Technical Field

The utility model relates to an engineering construction technical field especially relates to a mounting bracket is used in engineering construction illumination.

Background

The lighting is a measure for lighting working and living places or individual objects by various light sources, and the lighting is called natural lighting by using sun and skylight; the artificial light source is called as artificial lighting, and in engineering construction, particularly night construction, lighting is important, particularly when the construction period is relatively tight or the engineering needs.

In order to better realize the lighting effect, a mounting frame is needed.

The existing mounting rack is single in function, inconvenient to move, large in size, free of the storage function, poor in stability, easy to overturn, capable of bringing potential safety hazards, inconvenient to install the illuminating lamp, free of the lifting function, time-consuming and labor-consuming to install, low in efficiency, and capable of guaranteeing stability of the illuminating lamp in the using process, improving safety of the illuminating lamp, and the mounting rack for engineering construction lighting is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the shortcomings in the prior art and providing a mounting bracket for engineering construction lighting.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a mounting rack for engineering construction lighting comprises a first disc and a mounting plate which are horizontally arranged and a sleeve which is vertically arranged, wherein four rectangular grooves which are distributed in an annular array are formed in the periphery of the first disc, slide grooves are formed in opposite sides of the four rectangular grooves, a rotating rod which is horizontally arranged is rotatably connected in two opposite slide grooves, a cylinder which is horizontally arranged is sleeved on the outer wall of the four rotating rod, positioning assemblies for fixing the cylinder are arranged in the four rectangular grooves, a second disc which is horizontally arranged is fixedly connected to the top end of the first disc, the middle of the top end of the second disc is fixedly connected with the bottom end of the sleeve, a telescopic assembly for lifting the mounting plate is arranged in the sleeve, the top end of the telescopic assembly is fixedly connected with the bottom end of the mounting plate, and supports which are obliquely arranged are fixedly connected to two sides of the bottom end of the mounting plate far away from the position of the telescopic assembly, and the mounting panel outer wall has all been opened a plurality of and is the mounting hole that the rectangular array distributes, sleeve pipe outer wall cover is equipped with the antiskid cover that the level was placed, four bar grooves and T type grooves that are the annular array and distribute that set up with the rectangular channel is opened respectively to second disc periphery and antiskid cover periphery, and four equal joints in the T type inslot have vertical T type slider of placing, four the U type seat that antiskid cover one side equal fixedly connected with level was placed is kept away from to T type slider, and all is equipped with in four U type seats and is used for the tight subassembly of stationary cylinder clamp.

Furthermore, four equal fixedly connected with of cylinder one end is kept away from first disc one side and is vertically placed the supporting seat.

Furthermore, a plurality of vertically-arranged rollers are fixedly connected to the position, far away from the rectangular groove, of the middle of the bottom end of the first disc, and the rollers are distributed in an annular array.

Furthermore, the length and width of the strip-shaped groove are both greater than that of the rectangular groove, the length and width of the opening of the U-shaped seat are both greater than that of the strip-shaped groove, and the diameter of the second disc is greater than that of the first disc.

Furthermore, the anti-skid sleeve and the sleeve are fixed through bolts, and the cylinder and the rotating rod are fixed through bolts.

Further, flexible subassembly includes vertical buffer spring and the electric telescopic handle of placing, buffer spring and electric telescopic handle all peg graft with the intraductal wall of pipe, and buffer spring cup joints with electric telescopic handle, buffer spring and electric telescopic handle bottom all with second disc top middle part fixed connection, and electric telescopic handle flexible end top and mounting panel bottom middle part fixed connection, the relative one side of electric telescopic handle flexible end respectively with two support bottom fixed connection.

Further, clamping component includes a telescopic link and two arc strips that the level was placed, telescopic link one end and U type seat inner wall fixed connection, and the rectangular block that the telescopic link other end fixedly connected with level was placed, the relative one side of rectangular block respectively with two arc strips between the welding have the second spring that same level was placed, two the arc strip is articulated with U type seat inner wall, and two arc strips relative one side keep away from rectangular block one side and all weld the first spring that the slope was placed, two arc strip one side is all welded to first spring is kept away from arc strip one side and is all welded the spacing of level and place, and two spacing one sides in opposite directions all with U type seat inner wall fixed connection, the cylinder top is kept away from first disc one side and rectangular block and is kept away from telescopic link one side and all inlays and be equipped with vertical magnet of placing, and two relative one side polarity of magnet are inhaled mutually.

Furthermore, the electric telescopic rod is connected with a switch, and the switch is connected with a power line.

Furthermore, locating component includes the polygon pole that horizontal placement, and the polygon pole passes bull stick and rectangular channel inner wall one side joint.

Furthermore, locating component includes hexagonal screw and hexagon nut that horizontal placement, the bull stick and rectangular channel and hexagon nut spiro union are run through in proper order to hexagonal screw one end.

The utility model has the advantages that:

1. through setting up the gyro wheel, can freely remove the mounting bracket, convenient operation alleviates working strength, has also improved the flexibility, and supporting seat and cylinder that the cooperation set up for the lighting process is more stable, has improved the illuminating effect, reduces the potential safety hazard, combines the locating component who sets up, according to the unsmooth condition in ground, carries out angle modulation, has improved the stability of mounting bracket, also can change the cylinder, satisfies different installation demands.

2. Through setting up the mounting panel, the dismouting of convenient light is favorable to the staff to overhaul it, very big time of having saved, and the support that the cooperation set up has further strengthened the stability after the light installation, has effectually improved its security, combines the flexible subassembly of setting, enlarges the illumination zone, guarantees illuminating effect.

3. Through setting up antiskid cover and T type slider, the dismantlement of the mounting bracket of being convenient for conveniently carries the transportation, when not using, can accomodate, reduces occupation of land space, and the tight subassembly of clamp that the cooperation set up can support the cylinder fixedly, has reduced the space area occupied of mounting bracket, further improves the steadiness of accomodating.

Drawings

Fig. 1 is a schematic perspective view of a mounting bracket removing and positioning assembly for engineering construction lighting according to the present invention;

fig. 2 is a schematic plan view of an embodiment 1 of a mounting bracket for engineering construction lighting according to the present invention;

fig. 3 is a schematic plan sectional view of an embodiment 1 of the mounting bracket for engineering construction lighting according to the present invention;

fig. 4 is a schematic front sectional view of a U-shaped seat of a mounting bracket for illumination in engineering construction according to the present invention;

fig. 5 is a schematic top view of the mounting bracket U-shaped seat for engineering construction lighting according to the present invention;

fig. 6 is an enlarged schematic structural view a of the mounting bracket for engineering construction lighting in embodiment 1 of the present invention;

fig. 7 is a schematic view of a partial cross-sectional structure of a first disk of a mounting bracket for engineering construction lighting according to the present invention;

fig. 8 is a schematic plan sectional view of an embodiment 2 of the mounting bracket for engineering construction lighting provided by the present invention;

fig. 9 is an enlarged schematic structural view of an embodiment 2B of the mounting bracket for engineering construction lighting according to the present invention;

fig. 10 is a schematic plan view of an embodiment 2 of the mounting bracket for engineering construction lighting according to the present invention.

In the figure: 1. a sleeve; 2. a buffer spring; 3. a T-shaped slider; 4. a magnet; 5. a rectangular block; 6. a cylinder; 7. a polygonal rod; 8. a first disc; 9. a roller; 10. a rotating rod; 11. a supporting seat; 12. a second disc; 13. a U-shaped seat; 14. an arc-shaped strip; 15. a telescopic rod; 16. an anti-slip sleeve; 17. a support; 18. an electric telescopic rod; 19. mounting a plate; 20. a hexagonal screw; 21. a hexagonal nut; 22. a limiting strip; 23. a first spring; 24. a second spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Example 1

Referring to fig. 1-6, a mounting rack for engineering construction lighting comprises a first disc 8 and a mounting plate 19 which are horizontally arranged and a sleeve 1 which is vertically arranged, wherein four rectangular grooves which are distributed in an annular array are formed in the circumferential surface of the first disc 8, slide grooves are formed in opposite sides of the four rectangular grooves, a rotating rod 10 which is horizontally arranged is rotatably connected in two opposite slide grooves, horizontally arranged cylinders 6 are sleeved on the outer walls of the four rotating rods 10, positioning components for fixing the cylinders 6 are arranged in the four rectangular grooves, a second disc 12 which is horizontally arranged is fixedly connected to the top end of the first disc 8 through bolts, the middle part of the top end of the second disc 12 is fixedly connected with the bottom end of the sleeve 1 through bolts, a telescopic component for realizing the lifting of the mounting plate 19 is arranged in the sleeve 1, and the top end of the telescopic component is fixedly connected with the bottom end of the mounting plate 19 through bolts, the two sides of the bottom end of the mounting plate 19, which are far away from the telescopic component, are fixedly connected with a bracket 17 which is obliquely arranged through bolts, the outer wall of the mounting plate 19 is provided with a plurality of mounting holes which are distributed in a rectangular array, the outer wall of the sleeve 1 is sleeved with a horizontally-arranged anti-skidding sleeve 16, the circumferential surface of the second disc 12 and the circumferential surface of the anti-skidding sleeve 16 are respectively provided with four strip-shaped grooves and T-shaped grooves which are coaxially arranged with rectangular grooves and distributed in an annular array, the four T-shaped grooves are internally and respectively clamped with vertically-arranged T-shaped sliders 3, one sides of the four T-shaped sliders 3, which are far away from the anti-skidding sleeve 16, are respectively and fixedly connected with a horizontally-arranged U-shaped seat 13 through bolts, clamping components for fixing the cylinders 6 are arranged in the four U-shaped seats 13, one ends of the four cylinders 6, which are far away from one side of the first disc 8, are respectively and fixedly connected with a vertically-arranged supporting seat 11 through bolts, the middle part of the bottom end of the first disc 8, which is far away from the rectangular groove, is fixedly connected with a plurality of rollers 9 which are vertically arranged through bolts, the rollers 9 are distributed in an annular array, the length and width of the strip-shaped groove are all larger than those of the rectangular groove, the length and width of the opening of the U-shaped seat 13 are all larger than those of the strip-shaped groove, the diameter of the second disc 12 is larger than that of the first disc 8, the anti-skid sleeve 16 is fixed with the sleeve 1 through bolts, the cylinder 6 is fixed with the rotating rod 10 through bolts, the telescopic assembly comprises a buffer spring 2 and an electric telescopic rod 18 which are vertically arranged, the buffer spring 2 and the electric telescopic rod 18 are both inserted into the inner wall of the sleeve 1, the buffer spring 2 is sleeved with the electric telescopic rod 18, the bottom ends of the buffer spring 2 and the electric telescopic rod 18 are both fixedly connected with the middle part of the top end of the second disc 12 through bolts, the top part of the telescopic end of the electric telescopic rod 18 is fixedly connected with the middle part of the bottom end of the mounting plate 19 through bolts, and the opposite side of the telescopic end of the electric telescopic rod 18 is respectively fixedly connected with the bottom ends of the two brackets 17 through bolts, through the arrangement of the mounting plate, the convenient disassembly and assembly of the illuminating lamp are beneficial to workers to overhaul the illuminating lamp, the time is greatly saved, the stability of the illuminating lamp after the installation is further enhanced by matching with the arranged support, the safety of the illuminating lamp is effectively improved, the illumination range is enlarged by combining the arranged telescopic assembly, the illumination effect is ensured, the clamping assembly comprises a telescopic rod 15 and two arc-shaped strips 14 which are horizontally arranged, one end of the telescopic rod 15 is fixedly connected with the inner wall of the U-shaped seat 13 through a bolt, the other end of the telescopic rod 15 is fixedly connected with a rectangular block 5 which is horizontally arranged through a bolt, a second spring 24 which is horizontally arranged is welded between one side, opposite to the rectangular block 5, of the rectangular block and the two arc-shaped strips 14, the two arc-shaped strips 14 are hinged with the inner wall of the U-shaped seat 13, and first springs 23 which are obliquely arranged are welded on one side, opposite to the two arc-shaped strips 14, far away from the rectangular block 5, the side, far away from the arc-shaped strip 14, of each of the two first springs 23 is welded with a horizontally placed limiting strip 22, the opposite sides of the two limiting strips 22 are fixedly connected with the inner wall of the U-shaped seat 13 through bolts, the side, far away from the first disc 8, of the top end of the cylinder 6 and the side, far away from the telescopic rod 15, of the rectangular block 5 are embedded with vertically placed magnets 4, the polarities of the opposite sides of the two magnets 4 are attracted, the mounting rack is convenient to disassemble by arranging an anti-slip sleeve and a T-shaped slider, the carrying and the transportation are convenient, the mounting rack can be stored when not in use, the occupied space is reduced, the storage stability is further improved, the electric telescopic rod 18 is connected with a switch, the switch is connected with a power cord, the positioning component comprises a horizontally placed multi-edge rod 7, and the multi-edge rod 7 passes through the rotating rod 10 to be connected with one side of the inner wall of the rectangular groove in a clamping mode, through setting up the gyro wheel, can freely remove the mounting bracket, convenient operation alleviates working strength, has also improved the flexibility, and supporting seat and cylinder that the cooperation set up for the lighting process is more stable, has improved the illuminating effect, reduces the potential safety hazard, combines the locating component who sets up, according to the unsmooth condition in ground, carries out angle modulation, has improved the stability of mounting bracket, also can change the cylinder, satisfies different installation demands.

The working principle of the embodiment is as follows: firstly, the power of the electric telescopic rod 18 is switched on, the polygon rod 7 is pulled out, the cylinder 6 is lifted up under the action of the rotating rod 10, passes through the strip-shaped groove of the second disc 12, passes through the two limiting strips 12 under the action of the first spring 23, enters the U-shaped seat 13 to be contacted with the rectangular block 5, the cylinder 6 is fixed through the arrangement of the two magnets 4, the cylinders 6 with different specifications can be clamped under the matching of the arc-shaped strips 14 and the telescopic rod 15, different installation requirements are met, good storage effect is realized, later transportation and carrying are facilitated, then the installation frame can be moved to any required construction site through the arrangement of the idler wheels 9, the use is convenient and fast, the operation is convenient, the electric telescopic rod 18 is controlled to descend, the illuminating lamp is installed in any installation hole on the surface of the installation plate 19 as required, the installation flexibility is improved, through the arranged support 17, make the lighting process more stable, the illuminating effect is improved, again according to the size in construction place, move up through starting 18 control lighting lamps of electric telescopic handle, enlarge the illumination zone, guarantee the illuminating effect, after removing the completion, emit cylinder 6 from U type seat 13, and simultaneously, according to the unsmooth condition in ground, adjust the angle on cylinder 6 and ground through bull stick 10, under the cooperation of supporting seat 11, the stability of mounting bracket has been improved, avoid it to empty, and finally, with T type slider 3 from the T type inslot roll-off of antiskid cover 16, extract many arriss pole 7, take out cylinder 6 in the spout, realize the quick dismantlement of mounting bracket.

Example 2

Referring to fig. 1, 4, 5, 7, 8, 9, 10, an engineering construction is mounting bracket for illumination, this embodiment is for embodiment 1, and the main difference lies in this embodiment, and positioning component includes hexagonal screw 20 and hexagon nut 21 that horizontal placing, and the spiro union of bull stick 10 and rectangular channel and hexagon nut 21 is run through in proper order to hexagonal screw 20 one end, combines the positioning component who sets up, according to the unsmooth condition in ground, carries out angle modulation, has improved the stability of mounting bracket, also can change the cylinder, satisfies different installation demands.

The working principle of the embodiment is as follows: firstly, the power supply of the electric telescopic rod 18 is switched on, the hexagon nut 21 is unscrewed, the hexagon screw 20 is pulled out from the rotating rod 10, the cylinder 6 is slowly lifted, passes through the strip-shaped groove of the second disc 12, passes through the two limiting strips 12 under the action of the first spring 23, enters the U-shaped seat 13 to be contacted with the rectangular block 5, the cylinder 6 is fixed through the arrangement of the two magnets 4, the cylinders 6 with different specifications can be clamped under the matching of the arc-shaped strip 14 and the telescopic rod 15, different installation requirements are met, good storage effect is realized, later transportation and carrying are facilitated, then, the installation rack can be moved to any construction site with any requirement through the arrangement of the idler wheels 9, the use is convenient, the operation is convenient, the electric telescopic rod 18 is controlled to descend, the illuminating lamp is installed in any installation hole on the surface of the installation board 19 as required, and the installation flexibility is improved, through the support 17 that sets up, make the lighting process more stable, the illuminating effect is improved, again according to the size in construction place, shift up through starting 18 control lighting lamps of electric telescopic handle, enlarge the illumination zone, guarantee the illuminating effect, after removing the completion, emit cylinder 6 in U type seat 13, and simultaneously, according to the unsmooth condition in ground, adjust the angle of cylinder 6 and ground through bull stick 10, pass hexagonal screw 20 again in the bull stick 10 with the hexagonal nut 21 spiro union after, under the cooperation of supporting seat 11, the stability of mounting bracket has been improved, avoid it to empty, finally, slide out T type inslot roll-off of T type slider 3 from anti-skidding cover 16, hexagonal screw 20 and cylinder 6 in proper order, realize the quick dismantlement of mounting bracket.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", "first", "second", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

In the description of the present patent application, it is to be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "disposed" are to be interpreted broadly, and may be, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed, and the specific meaning of the terms in the patent will be understood by those skilled in the art according to the specific situation.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a mounting bracket for engineering construction illumination, includes the first disc (8) and the mounting panel (19) of horizontal placement and the sleeve pipe (1) of vertical placement, its characterized in that, four rectangular channels that are the annular array and distribute are all opened to first disc (8) periphery, and the spout has all been opened to relative one side in four rectangular channels, and all rotate in two relative spouts and be connected with bull stick (10) that same level was placed, four the bull stick (10) outer wall all overlaps and is equipped with the cylinder (6) of horizontal placement, and all is equipped with the locating component who is used for fixed cylinder (6) in four rectangular channels, the second disc (12) of horizontal placement is fixedly connected with in first disc (8) top, and second disc (12) top middle part and sleeve pipe (1) bottom fixed connection, be equipped with the flexible subassembly that is used for realizing mounting panel (19) lift in the sleeve pipe (1), and flexible subassembly top and mounting panel (19) bottom fixed connection, the equal fixedly connected with slope of flexible subassembly position department is kept away from in mounting panel (19) bottom both sides and is placed support (17), and mounting panel (19) outer wall has all opened the mounting hole that a plurality of is the rectangular array and distributes, sleeve pipe (1) outer wall cover is equipped with anti-skidding cover (16) that the level was placed, four bar grooves and T type groove that are the annular array and distribute that have set up with the rectangular channel is coaxial respectively opened to second disc (12) periphery and anti-skidding cover (16) periphery, and four T type inslot equal joints have vertical T type slider (3) of placing, four the U type seat (13) that the equal fixedly connected with level in anti-skidding cover (16) one side was placed are kept away from in T type slider (3), and all be equipped with the clamping component who is used for stationary cylinder (6) in four U type seats (13).

2. The mounting rack for engineering construction lighting as claimed in claim 1, wherein one end of each of the four cylinders (6) far from the first disc (8) is fixedly connected with a vertically placed supporting seat (11).

3. The mounting rack for engineering construction lighting according to claim 2, wherein the central portion of the bottom end of the first disk (8) is fixedly connected with a plurality of vertically arranged rollers (9) far away from the rectangular groove, and the rollers (9) are distributed in an annular array.

4. The mounting rack for engineering construction lighting as claimed in claim 3, wherein the width of the strip-shaped groove is greater than that of the rectangular groove, the width of the opening of the U-shaped seat (13) is greater than that of the strip-shaped groove, and the diameter of the second disc (12) is greater than that of the first disc (8).

5. The mounting rack for engineering construction lighting according to claim 4, wherein the anti-slip sleeve (16) is fixed with the sleeve (1) through bolts, and the cylinder (6) is fixed with the rotating rod (10) through bolts.

6. The mounting frame for engineering construction lighting according to claim 5, wherein the telescopic assembly comprises a buffer spring (2) and an electric telescopic rod (18) which are vertically arranged, the buffer spring (2) and the electric telescopic rod (18) are both inserted into the inner wall of the casing (1), the buffer spring (2) is sleeved with the electric telescopic rod (18), the bottom ends of the buffer spring (2) and the electric telescopic rod (18) are both fixedly connected with the middle of the top end of the second disc (12), the top of the telescopic end of the electric telescopic rod (18) is fixedly connected with the middle of the bottom end of the mounting plate (19), and the opposite side of the telescopic end of the electric telescopic rod (18) is respectively fixedly connected with the bottom ends of the two supports (17).

7. The mounting rack for engineering construction lighting as claimed in claim 6, wherein the clamping assembly comprises a horizontally arranged telescopic rod (15) and two arc-shaped strips (14), one end of the telescopic rod (15) is fixedly connected with the inner wall of the U-shaped seat (13), the other end of the telescopic rod (15) is fixedly connected with a horizontally arranged rectangular block (5), the opposite side of the rectangular block (5) is respectively welded with a second spring (24) which is horizontally arranged between the two arc-shaped strips (14), the two arc-shaped strips (14) are hinged with the inner wall of the U-shaped seat (13), the sides of the two arc-shaped strips (14) which are opposite to each other and far from the rectangular block (5) are respectively welded with a first spring (23) which is obliquely arranged, the sides of the two first springs (23) which are far from the arc-shaped strips (14) are respectively welded with a horizontally arranged limiting strip (22), and the opposite sides of the two limiting strips (22) are fixedly connected with the inner wall of the U-shaped seat (13), one side of the top end of the cylinder (6) far away from the first disc (8) and one side of the rectangular block (5) far away from the telescopic rod (15) are embedded with vertically placed magnets (4), and the polarities of one side, opposite to the two magnets (4), of each other attract each other.

8. The mounting rack for engineering construction lighting as claimed in claim 7, wherein the electric telescopic rod (18) is connected with a switch, and the switch is connected with a power line.

9. The mounting frame for engineering construction lighting according to claim 8, wherein the positioning assembly comprises a polygonal rod (7) horizontally placed, and the polygonal rod (7) penetrates through the rotating rod (10) to be clamped with one side of the inner wall of the rectangular groove.

10. The mounting bracket for engineering construction lighting according to claim 8, wherein the positioning assembly comprises a horizontally placed hexagonal screw (20) and a hexagonal nut (21), and one end of the hexagonal screw (20) penetrates through the rotary rod (10) and the rectangular groove in sequence to be in threaded connection with the hexagonal nut (21).