CN116463975A

CN116463975A - Traffic safety height limiting device

Info

Publication number: CN116463975A
Application number: CN202310508890.6A
Authority: CN
Inventors: 杨长宏
Original assignee: Chongqing Vocational College of Transportation
Current assignee: Chongqing Vocational College of Transportation
Priority date: 2023-05-08
Filing date: 2023-05-08
Publication date: 2023-07-21

Abstract

The application discloses transportation safety limit for height device belongs to limit for height device technical field, including main part module, two lift upset modules and two dismouting modules, the main part module includes the arc pole, two show cards are installed to the surface symmetry of arc pole, the arc pole sets up between the top of two lift upset modules, the lift upset module includes the base case, the inside of base case is provided with lifting unit, through lifting unit, receipts exhibition subassembly, lifter plate, locating part, lifter block, speed reduction upset subassembly and hollow tube's setting, can drive when opening lifting unit and remove the wheel and descend the contact ground and be convenient for the staff to promote, can drive hollow tube and arc pole decline height and upset simultaneously and put, reduce the holistic height of device to be convenient for this device through shorter position, and then make things convenient for the staff to promote this device and remove.

Description

Traffic safety height limiting device

Technical Field

The application relates to the technical field of height limiting devices, in particular to a traffic safety height limiting device.

Background

Traffic refers to industries engaged in passenger and cargo transportation and language and image-text transmission, including transportation and post and telecommunications, and belongs to a third industry in national economy, while roads refer to public roads of vehicles which can run in cities, towns and villages and are confirmed by traffic authorities, and in order to standardize the running of vehicles on the roads, a height limiting device is usually erected to limit the running height of the vehicles and ensure the safe running of the road vehicles.

According to the search, chinese patent No. CN217758462U discloses a traffic safety height limiter, including ejector pin and two pole setting, the both ends bottom of ejector pin is demountable installation respectively in two pole setting tops, one side of one pole setting evenly is equipped with a plurality of teeth of a cogwheel, the teeth of a cogwheel meshing is connected in the gear dish of installing on the urceolus through the mount pad, the opposite side of one pole setting is inside the first spout that is located the urceolus inner wall through first pulley slidable mounting, the bottom both sides of another pole setting are inside the first spout that is located the urceolus inner wall all through first pulley slidable mounting, the gear dish drives one pole setting through the teeth of a cogwheel and goes up and down to remove in the urceolus, simultaneously another pole setting also can go up and down to remove along with in the urceolus, it drives the driving gear rotation to rotate the handle drive pivot, the driving gear drives the screw through gear area and a plurality of driven gears, thereby drive the universal wheel through the sleeve seat and reciprocate, when the universal wheel stretches out the base can be used.

In view of the above-mentioned related art, the applicant believes that, although the height limiting device can control the universal wheel to lift when in use, so as to facilitate the movement of the device, when the universal wheel is moved out of the device and contacts the ground pushing device to move, the height of the vertical rod is higher and the vertical rod is in a vertical state, so that the height of the device is too high when moving, and further, the device is inconvenient to pass through a shorter position when pushing, and the device is inconvenient to be pushed by staff, therefore, we propose a transportation safety height limiting device.

Disclosure of Invention

In order to solve the problems, the application provides a traffic safety height limiting device, which adopts the following technical scheme:

the utility model provides a traffic safety height-limiting device, includes main part module, two lift upset modules and two dismouting modules, the main part module includes the arc pole, two show cards are installed to the surface symmetry of arc pole, the arc pole sets up between the top of two lift upset modules, the lift upset module includes the base case, the inside of base case is provided with lifting unit spare, the one end fixed mounting of base case has the first motor of being connected with lifting unit spare, the inside of base case is provided with two receipts exhibition subassembly that all are connected with lifting unit spare, two be connected with the lifter plate between the receipts exhibition subassembly, four contained angle departments of lifter plate bottom all install the removal wheel, the top fixedly connected with two limiting brackets of base case, two sliding connection has the lifter block between the limiting brackets, the inside rotation of lifter block is connected with the pivot, be provided with the speed reduction upset subassembly between the surface of one end of pivot and one of them, the other end fixedly connected with installation cover of pivot, the inside fixedly mounted with hollow tube of installation cover, the inside of two hollow tube sets up the hollow tube is provided with the hollow tube, two ends of expansion tube modules are connected with one of arc pole respectively.

Further, the lifting assembly comprises a first screw rod which is rotationally connected between two ends of the inner wall of the base box, one end of the first screw rod is fixedly connected with an output shaft of the first motor, two moving blocks are sleeved on the outer surface of the first screw rod in a threaded mode, two pushing grooves are formed in two ends of the top of the base box, two pushing rods are hinged to the tops of the moving blocks, and one ends of the four pushing rods penetrate through the four pushing grooves and are hinged to the lifting blocks respectively.

Through adopting above-mentioned technical scheme for can drive the lifting block and go up and down when first lead screw is rotatory.

Further, receive and display the subassembly including fixed mounting at the inside mounting panel of base case, the top rotation of mounting panel is connected with big conical gear, big conical gear's bottom fixedly connected with threaded rod, the mounting panel is run through to the bottom of threaded rod, the surface thread bush of threaded rod is equipped with the lift loop bar with lifter plate top fixed connection.

Through adopting above-mentioned technical scheme, can drive the removal wheel through the rotation of threaded rod and go up and down.

Further, the folding and unfolding assembly further comprises a small bevel gear fixedly sleeved on the outer surface of the first screw rod, and the small bevel gear is meshed with the large bevel gear.

Through adopting above-mentioned technical scheme, through adopting above-mentioned technical scheme for when first lead screw is rotatory, can drive and remove the wheel and rise or descend.

Further, the speed reduction overturning assembly comprises an overturning gear fixedly connected to one end of the rotating shaft, one side of the lifting block is rotatably connected with a speed reduction gear meshed with the overturning gear, one side of the speed reduction gear is fixedly connected with a transmission gear, and one outer surface of the limiting frame is fixedly connected with a rack meshed with the transmission gear.

Through adopting above-mentioned technical scheme to let the lifter when going up and down, can drive the pivot and rotate, drive arc pole and hollow tube and swing and put, be convenient for pass through shorter position.

Further, four lifting grooves are formed in the inner wall of the base box, and the lifting plates are connected between the inner walls of the four lifting grooves in a sliding mode.

Through adopting above-mentioned technical scheme, can carry out spacingly to the lifter plate, can be more stable when letting the lifter plate go up and down.

Further, the telescopic assembly comprises a second motor arranged at the bottom of the hollow tube, an output shaft of the second motor extends to the inside of the hollow tube and is fixedly connected with a second screw rod, and an extension rod is sleeved on the outer surface of the second screw rod in a threaded manner.

By adopting the technical scheme, the height of the arc-shaped rod in use is convenient to adjust, so that the arc-shaped rod is convenient for a user to use.

Further, two bar grooves are formed in the inner wall of the hollow tube, two limiting bars are fixedly connected to the outer surface of the extension rod and are respectively and slidably connected to the inner parts of the two bar grooves, and a length value groove is formed in the outer surface of the extension rod.

Through adopting above-mentioned technical scheme, can carry out spacingly to the extension rod when the extension rod goes up and down, let the extension rod steadily go up and down.

Further, the dismouting module is including seting up the draw-in groove at bar groove top, the inside activity joint of draw-in groove has the cylinder piece, the one end fixed connection of cylinder piece and arc pole, two shrink grooves have been seted up to the inner wall of draw-in groove, two the inside of shrink groove is all sliding connection has the fixture block, two the equal movable joint of one end of fixture block is at the surface of cylinder piece, two equal fixedly connected with first spring between the inner wall of the other end of fixture block and two shrink grooves, two the equal fixedly connected with link up the piece in bottom of fixture block, two the link up the piece and extend to the outside of two shrink grooves respectively.

Through adopting above-mentioned technical scheme, can lock the arc pole to let the arc pole use steadily.

Further, the disassembly and assembly module further comprises two sleeved rods hinged with the two connecting blocks respectively, a push plate is hinged between one ends of the two sleeved rods, a second spring and a telescopic rod are fixedly connected between the push plate and the outer surface of the extension rod, and the telescopic rod is located in the second spring.

Through adopting above-mentioned technical scheme for when using, can conveniently release the locking to the arc pole, and then the dismantlement of the arc pole of being convenient for.

In summary, the present application includes the following beneficial technical effects:

(1) According to the device, through the arrangement of the lifting assembly, the folding and unfolding assembly, the lifting plate, the limiting frame, the lifting block, the speed reduction overturning assembly and the hollow pipe, the lifting assembly can be opened to drive the movable wheels to descend to contact the ground, so that workers can push the device conveniently, the hollow pipe and the arc-shaped rod can be driven to descend to a height and overturn, and meanwhile, the whole height of the device is reduced, so that the device can conveniently pass through a shorter position, and the workers can conveniently push the device to move;

(2) The arrangement of the second screw rod, the extension rod, the strip-shaped groove, the second motor and the length value groove enables the height of the arc-shaped rod to be adjusted by opening the second motor when the arc-shaped rod is used, so that the height of the arc-shaped rod is convenient to adjust, meanwhile, the height value of a specific device is convenient to observe through the length value groove, and the arc-shaped rod is convenient to use;

(3) This application is through fixture block, first spring, suit pole, push pedal and second spring's setting for when pressing the push pedal, can release the locking to the arc pole, outwards pulling arc pole can drive the cylinder piece and withdraw from the draw-in groove, thereby dismantle the arc pole, and then the staff of being convenient for dismantles the arc pole, promotes the convenience when this device uses.

Drawings

FIG. 1 is a schematic overall structure of the present application;

FIG. 2 is a schematic cross-sectional view of a foundation box of the present application;

FIG. 3 is a schematic view of the internal structure of the foundation box of the present application;

FIG. 4 is an enlarged schematic view of the structure at A of the present application;

FIG. 5 is a schematic diagram of an exploded view of the deceleration flip assembly of the present application;

FIG. 6 is a schematic cross-sectional view of a lift assembly of the present application;

FIG. 7 is a schematic view of an exploded view of the module of the present application;

fig. 8 is a schematic cross-sectional view of the module of the present application.

The reference numerals in the figures illustrate:

100. a main body module; 110. an arc-shaped rod; 120. a display board;

200. a lifting turnover module; 210. a base box; 220. a lifting assembly; 221. a first screw rod; 222. a moving block; 223. a push rod; 230. a folding and unfolding assembly; 231. a mounting plate; 232. a large bevel gear; 233. a threaded rod; 234. lifting the loop bar; 240. a lifting plate; 250. a limiting frame; 260. a lifting block; 270. a deceleration overturning assembly; 271. a turnover gear; 272. a reduction gear; 273. a transmission gear; 274. a rack; 280. a hollow tube; 290. a telescoping assembly; 291. a second screw rod; 292. an extension rod; 293. a bar-shaped groove; 294. a second motor;

300. disassembling and assembling the module; 310. a clamping groove; 320. a cylindrical block; 330. a clamping block; 340. a first spring; 350. a joint block; 360. sleeving the rod; 370. a push plate; 380. a telescopic rod; 390. and a second spring.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application; it is apparent that the described embodiments are only a part of the embodiments of the present application, not all of the embodiments, and all other embodiments obtained by a person having ordinary skill in the art without making creative efforts based on the embodiments in the present application are within the scope of protection of the present application.

In the description of the present application, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "top/bottom", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of description of the present application and to simplify the description, and do not indicate or imply that the devices or elements to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "configured to," "engaged with," "connected to," and the like are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

The present application is described in further detail below in conjunction with figures 1-8.

Referring to fig. 1-8, a traffic safety height limiting device comprises a main body module 100, two lifting overturning modules 200 and two dismounting modules 300, wherein the main body module 100 comprises an arc-shaped rod 110, two display boards 120 are symmetrically arranged on the outer surface of the arc-shaped rod 110, the arc-shaped rod 110 is arranged between the tops of the two lifting overturning modules 200, the lifting overturning modules 200 comprise a base box 210, a lifting assembly 220 is arranged in the base box 210, a first motor connected with the lifting assembly 220 is fixedly arranged at one end of the base box 210, two folding assemblies 230 which are all connected with the lifting assembly 220 are arranged in the base box 210, lifting plates 240 are connected between the two folding assemblies 230, moving wheels are all arranged at four included angles at the bottom of the lifting plates 240, two limiting brackets 250 are fixedly connected with the top of the base box 210, lifting blocks 260 are slidably connected between the two limiting brackets 250, a rotating shaft is connected with the inner surface of one of the lifting blocks 260, a speed reducing overturning assembly 270 is arranged between one end of the rotating shaft and the outer surface of the limiting brackets 250, a rotating shaft is fixedly connected with a mounting sleeve 280, two inner telescopic tubes 280 of the mounting sleeve are fixedly arranged at one end of the rotating shaft 280, two telescopic tubes 280 are fixedly arranged at two ends of the inner telescopic tubes 110 which are respectively connected with one end of the arc-shaped rod 110.

When this device is needed to be moved, the first motor and the telescopic assembly 290 can be opened by the staff, the lifting assembly 220 is driven by the first motor, the lifting assembly 220 can drive the lifting block 260 to slide between the two limiting frames 250 to descend to a reduced height, the telescopic assembly 290 drives the arc rod 110 to descend to a further height, and when the lifting block 260 descends, the deceleration overturning assembly 270 can drive the rotating shaft to overturn the hollow tube 280 to drive the arc rod 110 and the display board 120 to swing for ninety degrees and fall down, and meanwhile, the lifting assembly 220 can drive the retracting assembly 230 to drive the lifting plate 240 to descend, so that the movable wheels contact the ground, and the device is convenient for the staff to push.

The lifting assembly 220 comprises a first screw rod 221 rotatably connected between two ends of the inner wall of the base box 210, one end of the first screw rod 221 is fixedly connected with an output shaft of a first motor, two moving blocks 222 are sleeved on the outer surface of the first screw rod 221 in a threaded manner, two pushing grooves are formed in two ends of the top of the base box 210, two pushing rods 223 are hinged to the tops of the two moving blocks 222, one ends of the four pushing rods 223 penetrate through the four pushing grooves and are hinged to the lifting blocks 260 respectively, the folding and unfolding assembly 230 comprises a mounting plate 231 fixedly mounted inside the base box 210, the top of the mounting plate 231 is rotatably connected with a large conical gear 232, the bottom of the large conical gear 232 is fixedly connected with a threaded rod 233, the bottom end of the threaded rod 233 penetrates through the mounting plate 231, a lifting sleeve rod 234 fixedly connected with the top of the lifting plate 240 is sleeved on the outer surface of the threaded rod 233 in a threaded manner, the folding and unfolding assembly 230 further comprises a small conical gear fixedly sleeved on the outer surface of the first screw rod 221, the small bevel gear is meshed with the large bevel gear 232, the speed-reducing and overturning assembly 270 comprises a overturning gear 271 fixedly connected with one end of a rotating shaft, one side of a lifting block 260 is rotatably connected with a speed-reducing gear 272 meshed with the overturning gear 271, one side of the speed-reducing gear 272 is fixedly connected with a transmission gear 273, the outer surface of one limiting frame 250 is fixedly connected with a rack 274 meshed with the transmission gear 273, four lifting grooves are formed in the inner wall of a base box 210, a lifting plate 240 is slidably connected between the inner walls of the four lifting grooves, the telescopic assembly 290 comprises a second motor 294 arranged at the bottom of a hollow pipe 280, the output shaft of the second motor 294 extends to the inside of the hollow pipe 280 and is fixedly connected with a second screw rod 291, an extension rod 292 is sleeved on the outer surface of the second screw rod 291, two strip grooves 293 are formed in the inner wall of the hollow pipe 280, the outer surface fixedly connected with two spacing bars of extension rod 292, two spacing bars sliding connection are in the inside of two bar grooves 293 respectively, and the length value groove has been seted up to the surface of extension rod 292.

The first motor and the second motor 294 are turned on, the first screw rod 221 is driven to rotate by the first motor, the two moving blocks 222 are moved away from each other, the lifting block 260 is pulled by the four push rods 223 to slide between the two limiting frames 250 to descend to a reduced height, the second motor 294 drives the second screw rod 291 to rotate, the second screw rod 291 drives the extension rod 292 to shrink to the inside of the hollow tube 280 when rotating, the arc rod 110 is driven to further descend to a height, the rack 274 drives the transmission gear 273 to rotate when the lifting block 260 descends, the transmission gear 273 drives the reduction gear 272 to rotate, the reduction gear 272 is driven to reduce the speed to rotate by the turnover gear 271, the turnover gear 271 drives the rotating shaft to turn over, the hollow tube 280 is driven to swing for ninety degrees, meanwhile, the first screw rod 221 drives the large conical gear 232 through the small conical gear 232, the large conical gear 232 drives the threaded rod 233 to rotate, the threaded rod 233 drives the lifting sleeve 234 to descend when rotating, and further drives the lifting plate 240 and the moving wheel to descend, and the moving wheel 280 to contact the arc rod 280 to move to the arc rod 110 and the arc rod 280 to the arc rod 110 to move to the height, and the arc rod 110 can be lowered to the arc-shaped 110 and the arc rod can be lowered.

The disassembly module 300 comprises a clamping groove 310 formed in the top end of the strip-shaped groove 293, a cylindrical block 320 is movably clamped in the clamping groove 310, the cylindrical block 320 is fixedly connected with one end of the arc-shaped rod 110, two shrinkage grooves are formed in the inner wall of the clamping groove 310, clamping blocks 330 are slidably connected in the two shrinkage grooves, one ends of the two clamping blocks 330 are movably clamped on the outer surface of the cylindrical block 320, a first spring 340 is fixedly connected between the other ends of the two clamping blocks 330 and the inner walls of the two shrinkage grooves, connecting blocks 350 are fixedly connected to the bottoms of the two clamping blocks 330, the two connecting blocks 350 respectively extend to the outer parts of the two shrinkage grooves, the disassembly module 300 further comprises two sleeved rods 360 respectively hinged with the two connecting blocks 350, a push plate 370 is hinged between one ends of the two sleeved rods 360, a second spring 390 and a telescopic rod 380 are fixedly connected between the push plate 370 and the outer surface of the telescopic rod 292, and the telescopic rod 380 is located in the second spring 390.

Push pedal 370 is pressed, promotes two fixture blocks 330 through two suit poles 360 and presses two first springs 340, and two fixture blocks 330 will remove simultaneously and withdraw from cylinder piece 320, release the locking to arc pole 110, outwards stimulate arc pole 110 can drive cylinder piece 320 and withdraw from draw-in groove 310 to the dismantlement of arc pole 110 of being convenient for, and then the staff of being convenient for dismantles arc pole 110.

The implementation principle of the embodiment of the application is as follows: when the device needs to be moved, a worker can open a first motor and a second motor 294, the first screw rod 221 is driven to rotate by the first motor, so that two moving blocks 222 move away from each other, the lifting block 260 is pulled by four push rods 223 to slide between two limiting frames 250 to descend to a reduced height, the second motor 294 drives the second screw rod 291 to rotate, the second screw rod 291 can drive the extension rod 292 to shrink to the inside of the hollow tube 280 during rotation, thereby driving the arc rod 110 to further descend to a height, and the lifting block 260 is lowered, the rack 274 can drive the transmission gear 273 to rotate, the transmission gear 273 can drive the reduction gear 272 to rotate, the reduction gear 272 can reduce the speed to drive the turning gear 271 to rotate, the turning gear 271 can drive the rotating shaft to rotate, the hollow tube 280 is driven to turn over by ninety degrees, meanwhile, the first screw rod 221 drives the large conical gear 232 to drive the large conical gear 232 to rotate, the threaded rod 234 to descend when the threaded rod rotates, the lifting sleeve 234 is driven to descend during rotation, the lifting rod 234 is driven to further drive the lifting plate 280 to descend, the two hollow tube 280 is driven to move out of the arc rod 110, the two hollow tube 320 can be conveniently pushed by the two hollow tube 320 is pulled by the two hollow tube 320, the two hollow tube 320 can be simultaneously pushed by the two hollow tube 110 to move out of the arc rod 110, and the two hollow tube 110 can be conveniently pulled by the arc rod 110 to be pulled by the two hollow tube 320 to be simultaneously, the two hollow tube 320 can be pulled by the arc rod 110 to move out of the arc rod 110, and the two hollow tube 320 can be conveniently and the hollow tube 320 can be conveniently pushed by the two hollow tube 320 to move out of the arc rod can be conveniently and the high-drawn by the two hollow rod 110 can rotate can move down to move down can rotate can move down to rotate and the roll can and the roll, thereby facilitating the removal of the arcuate lever 110 by the worker.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims

1. The utility model provides a traffic safety limit for height device, includes main part module (100), two lift upset modules (200) and two dismouting modules (300), its characterized in that: the main body module (100) comprises an arc-shaped rod (110), two display boards (120) are symmetrically arranged on the outer surface of the arc-shaped rod (110), and the arc-shaped rod (110) is arranged between the tops of the two lifting turnover modules (200);

lifting turnover module (200) is including base case (210), the inside of base case (210) is provided with lifting unit (220), the one end of base case (210) is provided with the first motor of being connected with lifting unit (220), the inside of base case (210) is provided with two receipts exhibition subassembly (230) that all are connected with lifting unit (220), two be connected with lifter plate (240) between receipts exhibition subassembly (230), four contained angle departments of lifter plate (240) bottom all install the removal wheel, the top fixedly connected with two spacing (250) of base case (210), two sliding connection has lifting unit (260) between spacing (250), the inside rotation of lifting unit (260) is connected with the pivot, be provided with speed reduction turnover assembly (270) between the surface of one end of pivot and one of them spacing (250), the other end fixedly connected with installation cover of pivot, the inside fixedly installed hollow tube (280) of installation cover, the inside of hollow tube (280) is provided with movable wheel, two fixed connection has two spacing (250) of top of base case (250) respectively, two ends (300) are connected with arc-shaped module (110) and arc-shaped module (110).

2. The transportation safety height limiting device according to claim 1, wherein: the lifting assembly (220) comprises a first screw rod (221) which is rotationally connected between two ends of the inner wall of the base box (210), one end of the first screw rod (221) is fixedly connected with an output shaft of a first motor, two moving blocks (222) are sleeved on the outer surface of the first screw rod (221) in a threaded mode, two pushing grooves are formed in two ends of the top of the base box (210), two pushing rods (223) are hinged to the tops of the moving blocks (222), and one ends of the four pushing rods (223) penetrate through the four pushing grooves respectively and are hinged to the lifting blocks (260).

3. The transportation safety height limiting device according to claim 2, wherein: the folding and unfolding assembly (230) comprises a mounting plate (231) fixedly mounted inside a base box (210), a large conical gear (232) is rotatably connected to the top of the mounting plate (231), a threaded rod (233) is fixedly connected to the bottom of the large conical gear (232), the bottom of the threaded rod (233) penetrates through the mounting plate (231), and a lifting sleeve rod (234) fixedly connected with the top of a lifting plate (240) is sleeved on the outer surface of the threaded rod (233).

4. A transportation safety height limiter according to claim 3, wherein: the folding and unfolding assembly (230) further comprises a small bevel gear fixedly sleeved on the outer surface of the first screw rod (221), and the small bevel gear is meshed with the large bevel gear (232).

5. The transportation safety height limiting device according to claim 4, wherein: the speed reduction overturning assembly (270) comprises an overturning gear (271) fixedly connected to one end of a rotating shaft, one side of the lifting block (260) is rotatably connected with a speed reduction gear (272) meshed with the overturning gear (271), one side of the speed reduction gear (272) is fixedly connected with a transmission gear (273), and one outer surface of the limiting frame (250) is fixedly connected with a rack (274) meshed with the transmission gear (273).

6. The transportation safety height limiting device according to claim 5, wherein: four lifting grooves are formed in the inner wall of the base box (210), and the lifting plates (240) are connected between the inner walls of the four lifting grooves in a sliding mode.

7. The transportation safety height limiting device according to claim 6, wherein: the telescopic assembly (290) comprises a second motor (294) arranged at the bottom of the hollow tube (280), an output shaft of the second motor (294) extends to the inside of the hollow tube (280) and is fixedly connected with a second screw rod (291), and an extension rod (292) is sleeved on the outer surface of the second screw rod (291) in a threaded mode.

8. The transportation safety height limiting device according to claim 7, wherein: two bar grooves (293) are formed in the inner wall of the hollow tube (280), two limiting strips are fixedly connected to the outer surface of the extension rod (292), the two limiting strips are respectively and slidably connected to the inner portions of the two bar grooves (293), and a length value groove is formed in the outer surface of the extension rod (292).

9. The transportation safety height limiting device according to claim 8, wherein: the disassembly and assembly module (300) comprises a clamping groove (310) formed in the top end of the strip-shaped groove (293), a cylindrical block (320) is movably clamped in the clamping groove (310), the cylindrical block (320) is fixedly connected with one end of the arc-shaped rod (110), two shrinkage grooves are formed in the inner wall of the clamping groove (310), clamping blocks (330) are slidably connected in the two shrinkage grooves, one ends of the clamping blocks (330) are movably clamped on the outer surface of the cylindrical block (320), a first spring (340) is fixedly connected between the other end of the clamping block (330) and the inner walls of the two shrinkage grooves, and connecting blocks (350) are fixedly connected to the bottoms of the two clamping blocks (330) and extend to the outer parts of the two shrinkage grooves respectively.

10. The transportation safety height limiting device according to claim 9, wherein: the disassembly and assembly module (300) further comprises two sleeved rods (360) which are respectively hinged with the two connecting blocks (350), a push plate (370) is hinged between one ends of the two sleeved rods (360), a second spring (390) and a telescopic rod (380) are fixedly connected between the push plate (370) and the outer surface of the telescopic rod (292), and the telescopic rod (380) is located inside the second spring (390).