CN109573283B

CN109573283B - Protection device for on-vehicle transportation of PVC door skin reel

Info

Publication number: CN109573283B
Application number: CN201910020836.0A
Authority: CN
Inventors: 毛勇华
Original assignee: Jiangshan Dynasty Decorative Material Co Ltd
Current assignee: Jiangshan Dynasty Decorative Material Co Ltd
Priority date: 2019-01-09
Filing date: 2019-01-09
Publication date: 2020-01-10
Anticipated expiration: 2039-01-09
Also published as: CN109573283A

Abstract

The invention provides a protective device for vehicle-mounted transportation of a PVC door skin winding drum, which comprises a placing base, a first observation window, a water storage tank, a fixed point, a homing rope, an extrusion buoy, an inclined plate, a groove, a water inlet pipe, a limiting clamping groove, a spacing cover, a limiting clamping head, a second observation window, a bearing plate, a placing hole, a placing drum, a positioning block, a sliding groove, a sliding block, an agnail lug, a first movable rod, a drawing spring, a second movable rod, a stress block and a fixed hole, wherein the placing base is provided with a water storage tank; place base right side middle part embedding and be provided with first observation window, and place base left side middle part and be equipped with the perforation, place the welding in the middle of the base inside and have the aqua storage tank. When the section of thick bamboo was placed to the reel, reel bottom gravity can gather on the atress piece, and atress piece both sides second movable rod can stimulate the pull spring promptly, and its first movable rod slides in the sliding tray, and the sliding block can be the slope form promptly and block the reel outside, just forms the resistance with the jolt power that produces on the way of the transportation, and then can improve the steadiness of reel in placing the section of thick bamboo.

Description

Protection device for on-vehicle transportation of PVC door skin reel

Technical Field

The invention belongs to the technical field of PVC door skin transportation, and particularly relates to a protective device for vehicle-mounted transportation of a PVC door skin winding drum.

Background

PVC door skin is decorated as the parcel of timber, not only play the effect of decoration in the timber use, can also prevent that the timber from being scratched, PVC door skin and timber are two detached monomers usually, the back is produced to the PVC door skin, can be with its emission of rolling up a section of thick bamboo with the reel, send the PVC door skin of rolling up to sell everywhere through the transportation, the use, but the reel that will roll up the PVC door skin in the transportation is piled up and is transported on the car, receive the road jolt influence, accumulational reel is easy loose, and damage the PVC door skin on the reel easily.

In order to solve the problem that stacked winding drums are easy to loosen, in the existing processing method, fixing frames are placed on a vehicle to limit the winding drums, the influence of jolting and shaking on the winding drums is reduced, and the winding drums are prevented from being misplaced and loosened.

Based on the above description, and by combining the existing fixing frame to fix the reel in a limiting manner, it can be found that although the fixing frame has a fixing effect on the reel, the jolt force in the transportation process can still generate some vibration on the fixing frame, because the PVC doorskins are thin, if the vibration force is large, the contact surfaces of the outer walls of the PVC doorskins are abraded and worn, the protective measures on the transportation vehicle are insufficient, more PVC doorskin materials are wasted, otherwise, the production cost of the PVC doorskin materials is increased, and the reels on the fixing frame are stacked in multiple layers, sometimes the vehicle can be suddenly stopped during the driving process, and the reels can shake due to the jolt force generated by pits, which brings unnecessary troubles during the transportation process, so the existing PVC doorskin transportation technology and the deficiency are researched and improved, and the protection device for the vehicle-mounted transportation of the PVC doorskins reels is provided, so as to achieve the purpose of more practical value.

Disclosure of Invention

In order to solve the technical problems, the invention provides a protective device for vehicle-mounted transportation of a PVC doorskin winding drum, which aims to solve the problems that bumping force in the existing transportation process can still generate some vibration on a fixing frame, and the contact surfaces of the outer walls of PVC doorskins are abraded and worn if the PVC doorskins are subjected to large vibration force because the PVC doorskins are thin.

The invention relates to a protection device for vehicle-mounted transportation of a PVC door skin winding drum, which is achieved by the following specific technical means:

a protective device for vehicle-mounted transportation of a PVC door skin winding drum comprises a placing base, a first observation window, a water storage tank, a fixed point, a homing rope, an extrusion buoy, an inclined plate, a groove, a water inlet pipe, a limiting clamping groove, a spacing cover, a limiting clamping head, a second observation window, a bearing plate, a placing hole, a placing drum, a positioning block, a sliding groove, a sliding block, a barb convex block, a first movable rod, a drawing spring, a second movable rod, a stress block and a fixed hole; the middle part of the right side of the placing base is embedded with a first observation window, the middle part of the left side of the placing base is provided with a perforation, the middle of the interior of the placing base is welded with a water storage tank, the middle part of the left side of the water storage tank is provided with a water inlet pipe in a penetrating way, the limiting clamping grooves are all embedded between the two sides of the water storage tank, the middle part of the right side of the water storage tank is movably connected with an isolating cover, the middle part of the left side of the isolating cover is provided with a perforation, the water inlet pipe is all arranged in a penetrating way with the perforations on the placing base and the isolating cover, the left side and the right side of the isolating cover are both embedded with limiting clamping heads, the middle part of the right side of the isolating cover is embedded with a second observation window, the first observation window and the second observation window are both made of transparent toughened glass, the bearing plate is, the positioning blocks are embedded and arranged around the inner wall of the placing cylinder placing opening, the sliding grooves are arranged on the surfaces of the inner walls of the placing cylinder and the positioning blocks in a penetrating way, the outer wall of the upper part of the sliding groove on the positioning block is movably connected with a sliding block, one side of the upper surface of the sliding block is embedded with an agnail lug, the rod bodies of the first movable rods are movably connected in the sliding groove, the external connecting end of the first movable rod is connected with the back of the sliding block, the lower part of the internal connecting end of the first movable rod is movably connected with a drawing spring, the lower part of the drawing spring is movably connected with a second movable rod, the drawing spring and the second movable rod are both positioned in the cavity in the placing cylinder, the stress block is movably connected with the lower part in the placing cylinder, the stress block is movably connected with the second movable rod at the front, the back, the left and the right, and a fixed hole is arranged in the middle above the stress block in a penetrating way;

the water storage tank comprises a fixed point, a homing rope, an extrusion buoy, an inclined plate and a groove, the fixed point is arranged at the lower end inside the water storage tank, the homing rope is fixedly connected to one side of the fixed point, the other end of the homing rope is fixedly connected to the lower end of the extrusion buoy, the inclined plate is arranged on the outer side of the upper end of the extrusion buoy, and the groove is formed in the middle of the upper end of the extrusion buoy in an embedded mode.

Preferably: the placing base is in an isosceles trapezoid structure shape, and the length and width of the placing base are smaller than those of the bearing plate.

Preferably: the water storage tank and the air separation cover are arranged in a matched mode, the positions of the limiting clamping heads on the two sides of the air separation cover are opposite to the positions of the limiting clamping grooves one by one, and the lower end inside the water storage tank is arc-shaped.

Preferably: and a gap distance of three centimeters is reserved between the upper surface of the separation cover and the contact surface inside the bearing plate.

Preferably: the positioning blocks are arranged in an annular structure, and the sizes of the plate blocks of the positioning blocks are consistent.

Preferably: the sliding groove is of an arc-shaped cavity structure, and when the PVC doorskin winding drum is placed on the stress block of the placing drum, the first movable rod is driven to slide in the sliding groove, so that the sliding block is arranged in an inclined shape.

Preferably: the barb lugs are arranged in an inclined shape structure, and the barb lugs are all outwards projected for a zero point of six centimeters.

Preferably: the cavity body is arranged between the stress block and the bottom of the placing cylinder, and the distance between the stress block and the bottom of the placing cylinder is five centimeters.

Preferably: the lower half part of the extrusion buoy is hemispherical, and the upper half part of the extrusion buoy is circular truncated cone-shaped

Has the advantages that:

1. the base of placing of this structure is isosceles trapezoid structure form setting, and places the base length and width size and be less than bearing plate length and width size, is isosceles trapezoid shape through placing the base, not only can increase the area of contact of base and car upper surface, improves frictional force, can also support through the both ends of base, reaches the shock attenuation effect, has reduced the influence of the power of jolting to the reel.

2. The water storage tank and the air separation cover of the structure are arranged in a matched manner, the positions of the limiting clamping heads on the two sides of the air separation cover are opposite to the positions of the limiting clamping grooves one by one, two thirds of water is added into the water storage tank from the water inlet pipe, the water level of the water storage tank can be seen through the first observation window and the second observation window, when the base is placed to vibrate leftwards, the extrusion buoy floats on the water surface and is arranged to be arc-shaped through the lower end inside the water storage tank, the return rope is arranged below the extrusion buoy, so that the extrusion buoy moves rightwards relative to the water storage tank, water flows into the groove through the inclined plate, the whole extrusion buoy sinks downwards, the water is extruded through the arc-shaped inside the water storage tank and the downward sinking operation of the extrusion buoy, the water is forced to move rightwards, then the external force is counteracted through the rebounding of the water, and the vibration is reduced, the effect of shock attenuation is further improved, simultaneously, when high temperature weather transportation, will separate in the empty cover card goes into spacing draw-in groove, and then covers the aqua storage tank to isolated high temperature contacts with the aqua storage tank, can slow down the evaporation rate of aqua storage tank internal water.

3. The sliding tray of this structure is arc form cavity structures setting, and first movable rod position change back in the sliding tray, its sliding block is the slope form setting, when making its reel put into and place a section of thick bamboo, reel bottom gravity can gather on the atress piece, atress piece both sides second movable rod can stimulate the pull spring promptly, its first movable rod slides in the sliding tray, the sliding block can be the slope form promptly and block the reel outside, just with the jolt power formation resistance that produces in transit, and then can improve the steadiness of reel in placing a section of thick bamboo, and simultaneously, the reel still is single placing in placing a section of thick bamboo, can alleviate the influence that the car brought at the in-process emergency stop of traveling, the difficult production wearing and tearing of reel that has promoted single placing.

Drawings

Fig. 1 is a partial structural schematic diagram of the present invention.

FIG. 2 is a schematic view of the connection structure of the bearing plate, the separating cover, the water storage tank and the placing base.

Fig. 3 is an enlarged schematic view of a portion a in fig. 2 according to the present invention.

Fig. 4 is a schematic view of an inverted placement barrel structure of the present invention.

Fig. 5 is an enlarged schematic view of the structure at B in fig. 4 according to the present invention.

Fig. 6 is a schematic sectional structure view of the placement barrel of the present invention.

Fig. 7 is a schematic view of the connecting structure of the placing cylinder and the door skin rolling cylinder of the invention. (use state diagram)

Fig. 8 is a schematic sectional view of a water storage tank according to the present invention.

Fig. 9 is a schematic view of the squeeze buoy of the present invention.

In fig. 1 to 7, the correspondence between the component names and the reference numbers is: the device comprises a placing base-1, a first observation window-101, a water storage tank-102, a fixing point-1021, a homing rope-1022, a squeezing buoy-1023, an inclined plate-10231, a groove-10232, a water inlet pipe-103, a limit clamping groove-104, a spacing cover-105, a limit clamping head-106, a second observation window-107, a bearing plate-2, a placing hole-201, a placing cylinder-202, a positioning block-203, a sliding groove-204, a sliding block-205, a barb lug-2051, a first movable rod-206, a drawing spring-207, a second movable rod-208, a stress block-209 and a fixing hole-2091.

Detailed Description

The invention is further described below with reference to the accompanying drawings:

example (b):

as shown in figures 1 to 9: a PVC door skin reel vehicle-mounted transportation protection device comprises a placing base 1, a first observation window 101, a water storage tank 102, a fixing point 1021, a homing rope 1022, an extrusion buoy 1023, an inclined plate 10231, a groove 10232, a water inlet pipe 103, a limit clamping groove 104, a spacing cover 105, a limit clamping head 106, a second observation window 107, a bearing plate 2, a placing hole 201, a placing cylinder 202, a positioning block 203, a sliding groove 204, a sliding block 205, a barb convex block 2051, a first movable rod 206, a drawing spring 207, a second movable rod 208, a stress block 209 and a fixing hole 2091; a first observation window 101 is embedded in the middle of the right side of the placing base 1, a perforation is arranged in the middle of the left side of the placing base 1, a water storage tank 102 is welded in the middle of the inside of the placing base 1, a water inlet pipe 103 is arranged in the middle of the left side of the water storage tank 102 in a penetrating manner, a limiting clamping groove 104 is arranged between the two sides of the water storage tank 102 in an embedded manner, a spacing cover 105 is movably connected above the water storage tank 102, a perforation is arranged in the middle of the left side of the spacing cover 105, the water inlet pipe 103 is arranged in a penetrating manner with the perforation on the placing base 1 and the spacing cover 105, a limiting clamping head 106 is arranged in the left side and the right side of the spacing cover 105 in an embedded manner, a second observation window 107 is arranged in the middle of the right side of the spacing cover 105, the first observation window 101 and the second observation window 107 are both, the placing barrel 202 is fixedly connected in the placing hole 201 through bolts, the positioning blocks 203 are embedded in and arranged around the inner wall of the placing opening of the placing barrel 202, the sliding grooves 204 are respectively arranged on the inner wall surfaces of the placing barrel 202 and the positioning blocks 203 in a penetrating way, the sliding blocks 205 are movably connected on the outer wall above the sliding grooves 204 on the positioning blocks 203, barbed lugs 2051 are embedded in one side of the upper surface of each sliding block 205, the rod bodies of the first movable rods 206 are movably connected in the sliding grooves 204, the external connecting ends of the first movable rods 206 are connected with the back surfaces of the sliding blocks 205, the drawing springs 207 are movably connected below the internal connecting ends of the first movable rods 206, the second movable rods 208 are movably connected below the drawing springs 207, the drawing springs 207 and the second movable rods 208 are both positioned in the cavity in the placing barrel 202, the stress blocks 209 are movably connected below the inner part of the placing barrel 202, and the stress blocks 209 are movably connected with the second, a fixing hole 2091 penetrates through the middle part above the stress block 209;

the water storage tank 102 comprises a fixing point 1021, a homing rope 1022, an extrusion buoy 1023, an inclined plate 10231 and a groove 10232, the fixing point 1021 is arranged at the low end inside the water storage tank 102, the homing rope 1022 is fixedly connected to one side of the fixing point 1021, the other end of the homing rope 1022 is fixedly connected to the low end of the extrusion buoy 1023, the inclined plate 10231 is arranged on the outer side of the upper end of the extrusion buoy 1023, and the groove 10232 is arranged in the middle of the upper end of the extrusion buoy 1023 in an embedded mode.

Wherein: placing base 1 and being isosceles trapezoid structure form setting, and placing base 1 length and width size and being less than bearing plate 2 length and width size, being isosceles trapezoid shape through placing base 1, not only can increase the area of contact of base and the car upper surface, improve frictional force, can also support through the both ends of base, reach the shock attenuation effect, reduced the influence of jolt power to the reel.

Wherein: the water storage tank 102 and the spacing cover 105 are arranged in a matching way, the position of the limiting clamp heads 106 at two sides of the spacing cover 105 are opposite to the position of the limiting clamp grooves 104 one by one, and the lower end of the inside of the water storage tank 102 is set to be arc-shaped, two thirds of water is added into the water storage tank 102 from the water inlet pipe 103, the water level of the reservoir 102 can be seen through the first and

second observation windows

101 and 102, and when the base 1 is placed under jolt and vibration, the water is also subjected to vibration, because the water has no shape, the water can counteract the external force by utilizing the self interaction force while vibrating, thereby reducing the vibration, further improving the damping effect, and simultaneously, when in high-temperature weather transportation, the hollow cover 105 is clamped into the limit clamping groove 104, so as to cover the water storage tank 102, to isolate the high temperature from the tank 102, thereby slowing the evaporation rate of the water in the tank 102.

Wherein: the surface of the upper part of the hollow shield 105 and the contact surface inside the bearing plate 2 are provided with a gap distance of three centimeters, so that the hollow shield 105 and the bearing plate 2 are not in mutual contact, a heat insulation effect is achieved, and heat on the bearing plate 2 is not easily conducted to the hollow shield 105.

Wherein: the positioning blocks 203 are arranged in an annular structure, the sizes of the plates of the positioning blocks 203 are consistent, and the positioning blocks 203 arranged in the annular structure just cater to the placement of the winding drum when the winding drum is placed in the placement drum 202 due to the fact that the winding drum is circular, and the positioning blocks 203 play a role in uniformly supporting the winding drum, so that dislocation and shaking are avoided.

Wherein: sliding tray 204 sets up for arc form cavity structures, when the PVC door skin reel is put into the atress piece 209 of placing a section of thick bamboo 202, it slides at sliding tray 204 to drive first movable rod 206, make sliding block 205 set up for the slope form, when making its reel put into place a section of thick bamboo 202, reel bottom gravity can gather on atress piece 209, atress piece 209 both sides second movable rod 208 can stimulate pull spring 207 promptly, its first movable rod 206 slides in sliding tray 204, sliding block 205 can be the slope form and block the reel outside, just form the resistance with the jolt power that produces in transit, and then can improve the steadiness of reel in placing a section of thick bamboo 202, and simultaneously, the reel still is single placing in placing a section of thick bamboo 202, can alleviate the influence that the car brought in the in-process emergency stop of going, the difficult production wearing and tearing of reel that has singly placed have promoted.

Wherein: barb lug 2051 arranges the setting for oblique shape structure, and barb lug 2051 all outwards protrudes six centimetres at zero point, and when the sliding block 205 blocked the reel outside, barb lug 2051 that oblique shape structure arranged just formed the stress surface of same direction with the sliding block 205 of slope, can increase the resistance that forms with the jolt power, and tightly hug the barb lug 2051 in the reel outside and can also prevent that the reel from skidding, increases the fixed frictional force of its reel.

Wherein: the atress piece 209 and place and be the cavity body setting between the section of thick bamboo 202 bobbin base, and atress piece 209 and place a 202 bobbin base apart from five centimetres, when making its reel press to atress piece 209, the cavity body at the bobbin base can provide fine atress space for atress piece 209 compresses freely, and is even steady to the pressure that second movable rod 208 produced.

Wherein: the lower half of the pressing float 1023 is formed in a hemispherical shape, and the upper half of the pressing float 1023 is formed in a circular truncated cone shape.

The working principle is as follows:

in the invention, firstly, the limit clamp 106 on the spacing cover 105 is clamped into the limit clamp groove 104 to cover the water storage tank 102, the water inlet pipe 103 is arranged on the water storage tank 102 through a through hole, the bearing plate 2 is covered, then the placing cylinders 202 are all placed into the placing holes 201 and are stabilized through bolts, at the moment, the placing base 1 is placed on a transport vehicle, two thirds of water is added into the water storage tank 102 from the position of the water inlet pipe 103, the water level of the water storage tank 102 can be seen through the first observation window 101 and the second observation window 107, when the placing base 1 is bumpy and vibrated, the water is also vibrated, because the water has no shape, the water can counteract the external force by utilizing the self interaction force while vibrating, so that the vibration is reduced, meanwhile, when the winding drum is placed into the placing cylinder 202, the bottom of the winding drum is butted with the fixing hole 2091, the gravity of the bottom of the winding drum is gathered on the stressed block 209, that is, the second movable rods 208 on both sides of the force-receiving block 209 can pull the pull spring 207, the first movable rod 206 slides in the sliding groove 204, that is, the sliding block 205 can be inclined to block the outside of the reel, and just forms resistance with the bumping force generated in the transportation process, so that the stability of the reel in the placing barrel 202 can be improved, the reel can be placed in the placing barrel 202 singly, the influence caused by sudden braking and sudden stopping of the vehicle in the driving process can be relieved, the reel can be taken out, the pull spring 207 is not pressed, the force-receiving block 209 can be retracted upwards, and the sliding block 205 can be sent away.

Claims

1. A protection device for vehicle-mounted transportation of a PVC doorskin winding drum comprises a placing base (1), a first observation window (101), a water storage tank (102), a fixing point (1021), a homing rope (1022), an extrusion buoy (1023), an inclined plate (10231), a groove (10232), a water inlet pipe (103), a limiting clamping groove (104), a space cover (105), a limiting clamping head (106), a second observation window (107), a bearing plate (2), a placing hole (201), a placing barrel (202), a positioning block (203), a sliding groove (204), a sliding block (205), a barb convex block (2051), a first movable rod (206), a drawing spring (207), a second movable rod (208), a stress block (209) and a fixing hole (2091); the method is characterized in that: the middle part of the right side of the placing base (1) is embedded with a first observation window (101), the middle part of the left side of the placing base (1) is provided with a perforation, the middle part of the inside of the placing base (1) is welded with a water storage tank (102), the middle part of the left side of the water storage tank (102) is provided with a water inlet pipe (103) in a penetrating way, a limiting clamping groove (104) is embedded between the two sides of the water storage tank (102), a spacing cover (105) is movably connected right above the water storage tank (102), the middle part of the left side of the spacing cover (105) is provided with a perforation, the water inlet pipe (103) is arranged in a penetrating way with the perforations on the placing base (1) and the spacing cover (105), the left side and the right side of the spacing cover (105) are respectively embedded with a limiting clamping head (106), the middle part of the right side of the spacing cover (105) is provided with a second observation window (107), the device is characterized in that a bearing plate (2) is fixedly connected with the upper side of a placing base (1) through bolts, a placing hole (201) is arranged on the upper surface of the bearing plate (2) in a penetrating mode, a placing barrel (202) is fixedly connected with the placing hole (201) through bolts, a positioning block (203) is embedded into the inner wall of the placing barrel (202) in the placing hole, a sliding groove (204) is arranged on the inner wall surface of the placing barrel (202) in the placing barrel and the inner wall surface of the positioning block (203) in a penetrating mode, a sliding block (205) is movably connected with the upper outer wall of the sliding groove (204) on the positioning block (203), a lug (2051) is embedded into one side of the upper surface of the sliding block (205), a first movable rod (206) is movably connected with the sliding groove (204), and the outer connecting end of the first movable rod (206) is connected with the, a drawing spring (207) is movably connected below the inner connecting end of the first movable rod (206), a second movable rod (208) is movably connected below the drawing spring (207), the drawing spring (207) and the second movable rod (208) are both positioned in the cavity in the placing barrel (202), the stress block (209) is movably connected below the inner part of the placing barrel (202), the stress block (209) is movably connected with the second movable rod (208) at the front, the back, the left and the right, and the middle part above the stress block (209) is provided with a fixing hole (2091) in a penetrating manner;

the utility model provides a water storage tank (102) is including fixed point (1021), homing rope (1022), extrusion buoy (1023), hang plate (10231) and recess (10232), the inside low side of water storage tank (102) is provided with fixed point (1021), one side fixedly connected with of fixed point (1021) rope (1022) that resets, the other end fixed connection of rope (1022) that resets is at the low side of extrusion buoy (1023), the outside of extrusion buoy (1023) upper end is provided with hang plate (10231), the middle part embedding of extrusion buoy (1023) upper end is provided with recess (10232).

2. The PVC doorskin reel protection device for vehicle transportation according to claim 1, characterized in that: the placing base (1) is in an isosceles trapezoid structure shape, and the length and width of the placing base (1) are smaller than those of the bearing plate (2).

3. The PVC doorskin reel protection device for vehicle transportation according to claim 1, characterized in that: the water storage tank (102) and the air separation cover (105) are arranged in a matched mode, the position of the limiting clamping heads (106) on the two sides of the air separation cover (105) is opposite to the position of the limiting clamping grooves (104) one by one, and the lower end inside the water storage tank (102) is arc-shaped.

4. The PVC doorskin reel protection device for vehicle transportation according to claim 1, characterized in that: and a gap distance of three centimeters is reserved between the upper surface of the spacing cover (105) and the inner contact surface of the bearing plate (2).

5. The PVC doorskin reel protection device for vehicle transportation according to claim 1, characterized in that: the positioning blocks (203) are arranged in an annular structure, and the sizes of the plates of the positioning blocks (203) are consistent.

6. The PVC doorskin reel protection device for vehicle transportation according to claim 1, characterized in that: the sliding groove (204) is arranged in an arc-shaped cavity structure, and when the PVC doorskin winding drum is placed on the stress block (209) of the placing drum (202), the first movable rod (206) is driven to slide in the sliding groove (204), so that the sliding block (205) is arranged in an inclined shape.

7. The PVC doorskin reel protection device for vehicle transportation according to claim 1, characterized in that: barb lug (2051) arrange the setting for oblique shape configuration, and barb lug (2051) all outwards bulge six centimetres at zero point.

8. The PVC doorskin reel protection device for vehicle transportation according to claim 1, characterized in that: the cavity body is arranged between the stress block (209) and the bottom of the placing cylinder (202), and the distance between the stress block (209) and the bottom of the placing cylinder (202) is five centimeters.

9. The PVC doorskin reel protection device for vehicle transportation according to claim 1, characterized in that: the lower half part of the extrusion buoy (1023) is hemispherical, and the upper half part of the extrusion buoy (1023) is circular truncated cone-shaped.