阅读说明：本技术 一种外贸物流车辆用警示牌 (Foreign trade is warning sign for commodity circulation vehicle ) 是由 王晓南 于 2021-11-04 设计创作，主要内容包括：本发明公开了一种外贸物流车辆用警示牌,包括箱体以及设置于箱体顶端的警示牌,所述箱体顶端开设有一横向分布的开口,所述警示牌底端固定有转动杆的一端,所述转动杆另一端贯穿开口且通过主动转轴转动连接于箱体后端内壁；还包括转动连接于箱体后端内壁且与主动转轴相平行分布的从动转轴。该外贸物流车辆用警示牌,通过驱动电机工作从而带动第一螺纹杆旋转,在螺纹作用下驱动灯泡以及支架做横向往复移动,同时第一螺纹杆旋转可以带动转动齿轮、主动转轴和警示牌做间歇式摆动,从而达到较好的醒目效果,保证后方车辆能够及时察觉到前方车辆出现故障,提升了设备在使用时的安全性,避免发生车辆互撞的安全隐患。(The invention discloses a warning board for foreign trade logistics vehicles, which comprises a box body and a warning board arranged at the top end of the box body, wherein the top end of the box body is provided with a transversely distributed opening, one end of a rotating rod is fixed at the bottom end of the warning board, and the other end of the rotating rod penetrates through the opening and is rotatably connected to the inner wall of the rear end of the box body through an active rotating shaft; the box body is rotatably connected with the inner wall of the rear end of the box body and comprises a driven rotating shaft which is distributed in parallel with the driving rotating shaft. This foreign trade is warning sign for commodity circulation vehicle, thereby it is rotatory to drive first threaded rod through driving motor work, horizontal reciprocating motion is done to drive bulb and support under the screw thread effect, first threaded rod is rotatory simultaneously can drive the running gear, the intermittent type formula swing is done to initiative pivot and warning sign, thereby reach better striking effect, guarantee that the rear vehicle can in time perceive the place ahead vehicle and break down, the security of equipment when using has been promoted, avoid taking place the potential safety hazard that the vehicle collided each other.)

1. The utility model provides a foreign trade is warning sign for commodity circulation vehicle, includes box (1) and sets up in warning sign (2) on box (1) top, its characterized in that: the top end of the box body (1) is provided with a transversely distributed opening, one end of a rotating rod (311) is fixed at the bottom end of the warning board (2), and the other end of the rotating rod (311) penetrates through the opening and is rotatably connected to the inner wall of the rear end of the box body (1) through a driving rotating shaft (312);

the rainwater dredging device also comprises a driven rotating shaft (411) which is rotatably connected with the inner wall of the rear end of the box body (1) and is distributed in parallel with the driving rotating shaft (312), a water outlet hole (420) which is formed in the outer side wall of the box body (1) and used for discharging rainwater, dredging rods (416) which are transversely distributed and are arranged corresponding to the water outlet hole (420), and dredging components which are used for driving the dredging rods (416) to transversely reciprocate so as to enter and exit the water outlet hole (420);

the driving device is used for driving the warning board (2) to do circumferential intermittent swing at the axis of the driving rotating shaft (312), and comprises a driving motor (314) fixedly installed on the side wall of the box body (1), a first threaded rod (315) with one end connected to the output end of the driving motor (314) and the other end rotatably connected to the inner wall of the box body (1), and a rotating gear (313) which is fixed at one end, far away from the inner wall of the box body (1), of the driving rotating shaft (312) and is arranged corresponding to the first threaded rod (315);

the outer wall of the first threaded rod (315) is in threaded connection with a movable sleeve (316), a support (317) is fixed at the top end of the movable sleeve (316), a bulb (318) is installed in the support (317), and a first guide rod (319) which is transversely distributed and penetrates through the support (317) to guide the support (317) and the bulb (318) to do transverse reciprocating movement is fixed on the inner wall of the box body (1);

when using in rainy day, drive arrangement work can drive initiative pivot (312) rotatory and then drive warning sign (2) and take place intermittent type nature swing, and drive belt (514) is connected with belt pulley A (511), belt pulley B (512) under the effect of promotion subassembly, thereby initiative pivot (312) drive driven spindle (411) is rotatory at this moment to drive dredging assembly work in order to drive dredging rod (416) business turn over apopore (420) inside with the silt mediation.

2. The warning sign for the foreign trade logistics vehicle of claim 1, wherein: drive pivot (312) with driven spindle (411) pass through transmission and connect, transmission is including belt pulley A (511) that is fixed in drive pivot (312) outer wall, be fixed in driven spindle (411) outer wall and with belt pulley B (512) that belt pulley A (511) correspond, cup joint in driven spindle (411) outer wall and with belt pulley C (513) that belt pulley A (511) correspond, but belt pulley A (511), belt pulley B (512) or belt pulley A (511), belt (514) of belt pulley C (513) and promotion belt (514) do the promotion subassembly of back-and-forth movement.

3. The warning sign for the foreign trade logistics vehicle of claim 1, wherein: the pushing assembly comprises a limiting sleeve (515) sleeved at the middle position of the belt (514), a second guide rod (516) with one end fixing the limiting sleeve (515) and the other end penetrating through the inner wall of the rear end of the box body (1), and a second threaded rod (517) which is rotatably connected to the rear end of the limiting sleeve (515) and is in threaded connection with the inner wall of the box body (1).

4. The warning sign for the foreign trade logistics vehicle of claim 1, wherein: the dredging component comprises a driving gear (412) fixed at one end, far away from one end of the inner wall of the box body (1), of the driven rotating shaft (411), a driven gear (413) which is connected to the inner wall of the bottom end of the box body (1) and is meshed with the driving gear (412) in a horizontal rotating mode, a rotating plate (414) which is used for fixing the bottom end of the driven gear (413) and corresponds to the dredging rod (416) and a telescopic component which is used for connecting the dredging rod (416) with the box body (1), wherein the rotating plate (414) is of a waist-shaped structure.

5. The warning sign for the foreign trade logistics vehicle of claim 1, wherein: one end of the dredging rod (416) close to the rotating plate (414) is fixedly provided with a contact block (415), one side of the contact block (415) close to the rotating plate (414) is provided with an inclined surface, and the inclined direction of the inclined surface faces the direction far away from the axial lead of the box body (1) from the left to the right.

6. The warning sign for the foreign trade logistics vehicle of claim 4, wherein: the telescopic assembly comprises a fixing block (417) which is fixed on the inner wall of the bottom end of the box body (1) and is sleeved with a dredging rod (416) and a telescopic spring (418) which is wound on the outer wall of the dredging rod (416), wherein one end of the telescopic spring (418) is connected to the fixing block (417), and the other end of the telescopic spring is connected to the contact block (415).

7. The warning sign for the foreign trade logistics vehicle of claim 6, wherein: a scraper plate (419) is fixed on the outer wall of the dredging rod (416), and the bottom end of the scraper plate (419) is attached to the inner wall of the bottom end of the box body (1).

Technical Field

The invention relates to the technical field of warning boards, in particular to a warning board for a foreign trade logistics vehicle.

Background

The trade industry is also being aroused gradually along with the development of china's trade cause, need use the commodity circulation vehicle in transporting to the commodity circulation vehicle can go in high speed when going in order to reach fastest transportation effect, when breaking down in the commodity circulation vehicle transportation, the staff need place the warning sign on the road, in order to avoid subsequent vehicle and commodity circulation vehicle to bump.

The existing warning board is generally fixedly arranged and is inconvenient to adjust when in use, and the rear vehicle is inconvenient and clear to observe the warning board in a long-distance state in the driving process, so that the rear vehicle is caused to have potential safety hazards due to untimely braking, and the use safety of equipment is reduced.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a warning board for foreign trade logistics vehicles, which drives a first threaded rod to rotate by the work of a driving motor, drives a bulb and a bracket to do transverse reciprocating movement under the action of threads, and simultaneously drives a rotating gear, an active rotating shaft and the warning board to intermittently swing by the rotation of the first threaded rod, thereby achieving better striking effect, ensuring that rear vehicles can timely detect the fault of front vehicles, improving the safety of equipment in use, avoiding the potential safety hazard of vehicle collision and the like, and solving the problems provided by the background technology.

(II) technical scheme

In order to achieve the purpose, the invention provides the following technical scheme: a warning board for foreign trade logistics vehicles comprises a box body and a warning board arranged at the top end of the box body, wherein a transversely distributed opening is formed in the top end of the box body, one end of a rotating rod is fixed at the bottom end of the warning board, and the other end of the rotating rod penetrates through the opening and is rotatably connected to the inner wall of the rear end of the box body through a driving rotating shaft;

the dredging device also comprises a driven rotating shaft which is rotatably connected with the inner wall of the rear end of the box body and is distributed in parallel with the driving rotating shaft, water outlet holes which are formed in the outer side wall of the box body and used for discharging rainwater, dredging rods which are transversely distributed and are arranged corresponding to the water outlet holes, and a dredging component which is used for driving the dredging rods to transversely reciprocate so as to pass in and out the water outlet holes;

the driving device comprises a driving motor fixedly arranged on the side wall of the box body, a first threaded rod with one end connected to the output end of the driving motor and the other end rotatably connected to the inner wall of the box body, and a rotating gear which is fixed at one end of the driving rotating shaft, far away from the inner wall of the box body and is arranged corresponding to the first threaded rod;

the outer wall of the first threaded rod is in threaded connection with a movable sleeve, a support is fixed at the top end of the movable sleeve, a bulb is arranged in the support, and a first guide rod which is transversely distributed and penetrates through the support to guide the support and the bulb to do transverse reciprocating movement is fixed on the inner wall of the box body;

when the dredging rod is used in rainy days, the driving device works to drive the driving rotating shaft to rotate so as to drive the warning board to swing intermittently, the driving belt is connected with the belt pulley A and the belt pulley B under the action of the pushing assembly, and the driving rotating shaft drives the driven rotating shaft to rotate so as to drive the dredging assembly to work so as to drive the dredging rod to dredge sludge in the water outlet hole.

Preferably, the driving rotating shaft is connected with the driven rotating shaft through a transmission device, the transmission device comprises a belt pulley A fixed on the outer wall of the driving rotating shaft, a belt pulley B fixed on the outer wall of the driven rotating shaft and corresponding to the belt pulley A, a belt pulley C sleeved on the outer wall of the driven rotating shaft and corresponding to the belt pulley A, a belt capable of being in transmission connection with the belt pulley A, the belt pulley B or the belt pulley A and the belt pulley C, and a pushing assembly for pushing the belt to move back and forth, and the belt is driven by the pushing assembly to move back and forth, so that the belt is corresponding to the belt pulley A, the belt path B or the belt pulley A and the belt pulley C, and the driven rotating shaft is rotated or idled.

Preferably, the promotion subassembly is including cup jointing in the stop collar of belt intermediate position, the second guide rod that the stop collar was fixed to one end and the other end runs through box rear end inner wall and rotatable second threaded rod of connecting in the stop collar rear end and in box inner wall threaded connection, can drive the belt through the work of promotion subassembly and adjust from beginning to end to adapt to the use under the different environment.

Preferably, the dredging component comprises a driving gear fixed on one end of the driven rotating shaft far away from the inner wall of the box body, a driven gear which is connected on the inner wall of the bottom end of the box body and is meshed with the driving gear in a horizontal rotating mode, a rotating plate which is used for fixing the bottom end of the driven gear and corresponds to the dredging rod, and a telescopic component which is used for connecting the dredging rod with the box body, wherein the rotating plate is of a waist-shaped structure.

Preferably, the one end that the mediation pole is close to the rotating plate is fixed with the contact block, the contact block is close to a rotating plate side and sets up to the inclined plane, and the incline direction on inclined plane is from a left side to a right side towards the direction of keeping away from the box axial lead.

Preferably, flexible subassembly is including being fixed in box bottom inner wall and cup jointing the fixed block of dredging pole and twining in the expanding spring of dredging pole outer wall, and this expanding spring one end is connected in fixed block, the other end and is connected in the touch multitouch, sets up flexible subassembly and can ensure that the dredging pole can resume initial condition when not using, and then reaches the effect of better mediation delivery port.

Preferably, the dredging rod outer wall is fixed with the scraper blade, the scraper blade bottom is laminated with box bottom inner wall mutually, and the scraper blade material can promote the inside rainwater of box for rubber and flow and realize the drainage effect.

(III) advantageous effects

Compared with the prior art, the invention has the following beneficial effects:

1. this foreign trade is warning sign for commodity circulation vehicle, through setting up the dwang, the initiative pivot, rolling gear, driving motor, first threaded rod, the movable sleeve, and a support, bulb and first guide pole, thereby it is rotatory to drive first threaded rod through driving motor work, horizontal reciprocating motion is done to drive bulb and support under the screw thread effect, first threaded rod is rotatory simultaneously can drive rolling gear, intermittent type formula swing is done to initiative pivot and warning sign, thereby reach better striking effect, guarantee that the rear vehicle can in time perceive the place ahead vehicle and break down, the security of equipment when using has been promoted, avoid taking place the potential safety hazard that the vehicle collided each other.

2. This foreign trade is warning sign for logistics vehicle, through setting up driven rotating shaft, the driving gear, driven gear, the rotor plate, support the touch multitouch, dredge the pole, the fixed block, expanding spring, scraper blade and apopore, driven rotating shaft can drive the driving gear after rotatory and rotate, driven gear and rotor plate take place rotatoryly this moment, can drive the block promotion of contradicting and dredge the pole and do horizontal reciprocating motion, it can play the effect of mediation silt to dredge the pole behind the apopore to have silt to block up the apopore on the road, guarantee that the drainage effect of apopore can not receive the influence, dredge the pole simultaneously and can drive the scraper blade removal with the box inside ponding comprehensive apopore discharge through, rainwater enters into the box after when this kind of mode is avoided rainy day to use, lead to the problem of the inconvenient transport box of staff and warning sign, the result in use of equipment has been promoted.

3. This foreign trade is warning sign for commodity circulation vehicle, through setting up belt pulley A, belt pulley B, belt pulley C, the belt, the stop collar, second guide bar and second threaded rod, thereby the staff can rotate the second threaded rod and promote the stop collar and do the back-and-forth movement, thereby realize promoting belt and belt pulley A, belt pulley B or belt pulley A, the effect of belt pulley C looks transmission connection, drainage device work or stop work when can playing the adaptation rainy or when not rainy, and then reach better regulation effect, convenience of equipment can adapt to different in service behavior, the use comprehensiveness of equipment has been promoted.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic view of the internal structure of the present invention;

FIG. 3 is a schematic view of the belt construction of the present invention;

FIG. 4 is an enlarged view of the structure at A in FIG. 3 according to the present invention;

FIG. 5 is a schematic view of a rear view structure of the present invention;

FIG. 6 is a schematic view of a rotating plate according to the present invention;

fig. 7 is a schematic view of the structure of the collision block of the present invention.

In the figure: 1. a box body; 2. a warning board; 311. rotating the rod; 312. a driving rotating shaft; 313. a rotating gear; 314. a drive motor; 315. a first threaded rod; 316. a movable sleeve; 317. a support; 318. a bulb; 319. a first guide bar; 411. a driven rotating shaft; 412. a driving gear; 413. a driven gear; 414. a rotating plate; 415. a contact block; 416. dredging the rod; 417. a fixed block; 418. a tension spring; 419. a squeegee; 420. a water outlet hole; 511. a belt pulley A; 512. a belt pulley B; 513. a belt pulley C; 514. a belt; 515. a limiting sleeve; 516. a second guide bar; 517. a second threaded rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Examples

Referring to fig. 1-7, a foreign trade is warning sign for logistics vehicle, include box 1 and set up in warning sign 2 on 1 top of box, a transverse distribution's opening is seted up on 1 top of box, 2 bottom mounting of warning sign have the one end of dwang 311, the dwang 311 other end runs through the opening and rotates through initiative pivot 312 and connect in 1 rear end inner wall of box, it can make things convenient for dwang 311 to carry out circumference formula intermittent type nature swing in 1 inside of box to set up the opening, thereby reach comparatively striking effect, thereby ensure that the rear vehicle can in time observe thereby quick the response that turns to of making, reach and avoid the vehicle collision and take place the problem of potential safety hazard, the security of foreign trade logistics vehicle operation has been guaranteed.

The warning board 2 is driven to do circumferential intermittent swing at the axis of the driving rotating shaft 312 by the driving device.

Drive arrangement includes fixed mounting in the driving motor 314 of box 1 lateral wall, one end is connected in the first threaded rod 315 of box 1 inner wall in rotatable connection of driving motor 314 output and the other end and is fixed in initiative pivot 312 and keeps away from box 1 inner wall one end and in the corresponding slewing gear 313 that sets up of first threaded rod 315, can drive first threaded rod 315 through driving motor 314 work and be forward or the antiport, first threaded rod 315 can drive slewing gear 313 rotatory this moment, and then make initiative pivot 312, the effect of intermittent type nature swing is realized to dwang 311 and warning sign 2, this kind of mode operation is comparatively convenient, do not need staff's manual operation can realize striking effect. The outer wall of the first threaded rod 315 is in threaded connection with a movable sleeve 316, the top end of the movable sleeve 316 is fixed with a support 317, a bulb 318 is installed inside the support 317, the inner wall of the box body 1 is fixed with a first guide rod 319 which is transversely distributed and penetrates through the support 317 to guide the support 317 and the bulb 318 to do transverse reciprocating movement, when light is dark, a worker can turn on the bulb 318 to achieve a lighting effect, meanwhile, the first threaded rod 315 can drive the movable sleeve 316, the support 317 and the bulb 318 to do transverse reciprocating movement under the action of threads when rotating forwards and backwards, at the moment, the support 317 can slide along the outer wall of the first guide rod 319 to ensure the stability of the movement of the support 317, in this way, the device can achieve a good striking effect at a dark place, the use effect of the device is improved, it is worth mentioning that the bulb 318 mainly plays a light emitting role, and when light is not good in dense fog days or rainy days, the rear vehicle can be reminded conveniently, the color of the bulb 318 is preferably red, the penetrating power is strongest mainly because the wavelength of red light is longest and the red light is not easy to scatter, and the height of the box body 1 is lower, when the rear vehicle arrives, the irradiation direction of the bulb 318 cannot correspond to the driving position of the rear vehicle, so the driving safety of the rear vehicle cannot be influenced, and the bulb 318 and the warning board 2 are in the parallel position, so the irradiation range of the bulb 318 cannot influence the warning board 2, and the problem that the surface of the warning board 2 cannot be reflected is solved.

The rainwater dredging device further comprises a driven rotating shaft 411 which is rotatably connected to the inner wall of the rear end of the box body 1 and is distributed in parallel with the driving rotating shaft 312, a water outlet hole 420 which is formed in the outer side wall of the box body 1 and used for discharging rainwater, dredging rods 416 which are transversely distributed and are arranged corresponding to the water outlet hole 420, and dredging components which are used for driving the dredging rods 416 to transversely reciprocate so as to enter and exit the water outlet hole 420.

The dredging component comprises a driving gear 412 fixed at one end of the driven rotating shaft 411 far away from the inner wall of the box body 1, a driven gear 413 which is connected to the inner wall of the bottom end of the box body 1 and is meshed with the driving gear 412 and can horizontally rotate, a rotating plate 414 which is used for fixing the bottom end of the driven gear 413 and corresponds to the dredging rod 416, and a telescopic component which is used for connecting the dredging rod 416 with the box body 1, wherein the rotating plate 414 is of a waist-shaped structure, the driving gear 412 and the driven gear 413 can be driven to rotate after the driven rotating shaft 411 rotates, at the moment, the rotating plate 414 rotates, a collision block 415 is fixed at one end of the dredging rod 416 close to the rotating plate 414, one side surface of the collision block 415 close to the rotating plate 414 is provided with an inclined surface, the inclined direction of the inclined surface faces from left to right and is far away from the axial lead of the box body 1, the end part of the rotating plate 414 is arc-shaped and can collide with the inclined surface of the outer wall of the collision block 415, so that the component force towards one side of the dredging rod 416 can be applied to the contact block 415, after the rotor plate 414 turned into the horizontal distribution state by initial vertical distribution state, the rotor plate 414 promoted to support the touch block 415 and drive dredging rod 416 and enter into apopore 420 inside, release the inside silt of apopore 420, thereby reach better mediation effect, can avoid silt to imbed apopore 420 inside and lead to the inside rainwater of box 1 problem that can not circulate when rainy day uses, promoted the result of use of equipment. Dredging rod 416 outer wall is fixed with scraper blade 419, and scraper blade 419 bottom and the laminating of 1 bottom inner wall of box mutually can drive scraper blade 419 and remove when dredging rod 416 removes, and scraper blade 419 material can be rubber, has advantages such as wear-resisting, and scraper blade 419 removes the in-process and can promote the rainwater of 1 insides of box to apopore 420 and discharge to realize comprehensive drainage effect.

The telescopic component is including being fixed in 1 bottom inner wall of box and cup joint the fixed block 417 of dredging pole 416 and twine in the expanding spring 418 of dredging pole 416 outer wall, this expanding spring 418 one end is connected in fixed block 417, the other end is connected in to touch block 415, guarantee through setting up telescopic component that rotor plate 414 continues to rotate and no longer present the transverse distribution state when, touch block 415 no longer receives the conflict, thereby in order to resume initial condition under telescopic spring 418's elasticity reset action, the staff can control the rotary motion of rotor plate 414 and do horizontal reciprocating type removal with control dredging pole 416 and reach business turn over apopore 420 and realize better mediation effect, silt can not be with apopore 420 internal blocking to this kind of mode maximize assurance, the drainage efficiency of apopore 420 has been promoted.

The driving rotating shaft 312 is connected with the driven rotating shaft 411 through a transmission device, the transmission device comprises a belt pulley A511 fixed on the outer wall of the driving rotating shaft 312, a belt pulley B512 fixed on the outer wall of the driven rotating shaft 411 and corresponding to the belt pulley A511, a belt pulley C513 sleeved on the outer wall of the driven rotating shaft 411 and corresponding to the belt pulley A511, a belt 514 in transmission connection with the belt pulley A511, the belt pulley B512 or the belt pulley A511 and the belt pulley C513 and a pushing component for pushing the belt 514 to move back and forth, a good adjusting effect can be achieved through the design, when the warning board 2 is driven by the driving rotating shaft 312 to swing, the driving rotating shaft 312 drives the belt pulley A511 to rotate, the belt 514 drives the belt pulley C513 to rotate, and the belt C513 can only idle on the outer wall of the driven rotating shaft 411 and can not drive the driven rotating shaft 411 to rotate, avoiding excessive mechanical energy loss.

When the water dredging device is used in rainy days, the driving device can drive the driving rotating shaft 312 to rotate so as to drive the warning board 2 to swing intermittently, the driving belt 514 is connected with the belt pulley A511 and the belt pulley B512 under the action of the pushing assembly, and the driving rotating shaft 312 drives the driven rotating shaft 411 to rotate so as to drive the dredging assembly to work so as to drive the dredging rod 416 to dredge sludge inside the water outlet hole 420.

The promotion subassembly is including cup jointing the stop collar 515 in the belt 514 intermediate position, the second guide rod 516 that stop collar 515 and the other end run through box 1 rear end inner wall is fixed to one end and rotatable second threaded rod 517 of connecting in stop collar 515 rear end and in box 1 inner wall threaded connection, can drive stop collar 515 and drive belt 514 and do reciprocating motion back and forth under the effect of screw thread through rotatory second threaded rod 517, thereby play the regulating effect, it is enough stable when setting up second guide rod 516 and can guaranteeing that stop collar 515 and belt 514 remove, the removal of belt 514 is adjusted to this kind of mode is comparatively convenient.

The working principle is as follows: in normal use, the belt 514 of fig. 1-7 is connected to the outer wall of pulley a511 and pulley C513 and the rotating plates 414 are longitudinally distributed as an initial state.

The staff can open driving motor 314 thereby it is rotatory to drive first threaded rod 315 and positive negative, first threaded rod 315 can drive change gear 313 this moment, initiative pivot 312, circumference formula intermittent type nature swing is done to dwang 311 and warning sign 2, initiative pivot 312 drives belt pulley A511, belt pulley C513 and belt 514 rotate, belt 514 takes place the idle running and can not influence driven spindle 411 rotation this moment, dwang 311 can swing along the opening direction, thereby make things convenient for the rear vehicle to observe warning sign 2, and simultaneously, first threaded rod 315 can drive movable sleeve 316 and support 317 and be lateral shifting under the effect of screw thread after rotating, support 317 can slide along first guide rod 319 outer wall this moment, thereby drive bulb 318 horizontal migration, can be convenient for the rear vehicle to observe in the dark place of light, the safety in utilization of equipment has been promoted.

When the box body is used in rainy days, a worker can rotate the second threaded rod 517, at the moment, the second threaded rod 517 can push the limiting sleeve 515 to drive the belt 514 to move forwards, at the moment, the second guide rod 516 can slide along the inner wall of the rear end of the box body 1 to ensure that the limiting sleeve 515 and the belt 514 can stably slide, after the belt 514 moves, the belt 514 can be in transmission connection with the belt pulley A511 and the belt pulley B512, at the moment, the worker can drive the warning board 2 to intermittently swing according to the operation, after the driving rotating shaft 312 rotates, the belt pulley B512 and the driven rotating shaft 411 can be driven to rotate under the action of the belt 514, the driven rotating shaft 411 drives the driving gear 412, the driven gear 413 and the rotating plate 414 to rotate, at the moment, the rotating plate 414 is converted into a transverse distribution state from a longitudinal distribution state, and can abut against the contact block 415 after the rotating plate 414 rotates, and drives the contact block 415 and the dredging rod 416 to move towards the water outlet hole 420 side under the action of the inclined plane of the abutting block 415, at this moment, the extension spring 418 is compressed by extrusion, the dredging rod 416 can be inserted into the water outlet hole 420 and dredges the sludge in the water outlet hole 420, and meanwhile the dredging rod 416 drives the scraper blade 419 to move so as to discharge the rainwater in the box body 1 as soon as possible, so that a better drainage effect is achieved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.