CN113978952A

CN113978952A - Dangerous goods transport carriage

Info

Publication number: CN113978952A
Application number: CN202111500662.1A
Authority: CN
Inventors: 刘海波
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-12-09
Filing date: 2021-12-09
Publication date: 2022-01-28

Abstract

The invention relates to the field of dangerous goods transportation, in particular to a dangerous goods transportation carriage, which comprises a carriage body, wherein one side of the carriage body is provided with a hinged carriage door, a fixedly connected partition board for separating an upper area from a lower area is arranged in the carriage body, two fixedly connected support bars are arranged above the partition board of the carriage body, a bottom plate in sliding connection is arranged on the support bars, tooth surfaces are arranged on two sides below the bottom plate, an air cooling seat in fixed connection is arranged above the carriage body, a water pump is arranged in the carriage body, a heat dissipation water channel for dissipating heat is arranged in the carriage body in a surrounding manner, the water pump is communicated with the heat dissipation water channel, a branch water channel communicated with the heat dissipation water channel is arranged in the air cooling seat, an air cooling seat is also arranged below the partition board, two support bars arranged in parallel to the support bars on the partition board are arranged at the bottom in the carriage body, the invention has a double-layer multi-storage chamber design, has high utilization rate on the carriage space, and can accurately perform explosion prevention and link explosion prevention on the dangerous goods explosion position, the ability to the hazardous articles centre gripping and heat dissipation has been increased simultaneously in the shock attenuation.

Description

Dangerous goods transport carriage

Technical Field

The invention belongs to the field of dangerous goods transportation, and particularly relates to a dangerous goods transportation carriage.

Background

Transportation of dangerous goods is one of special transportation, and refers to transportation of unconventional goods by special vehicles by special organizations or technicians. The dangerous goods transportation can be qualified only through strict examination by related national functional departments and corresponding facility equipment which can ensure safe transportation of the dangerous goods; the vibration of a certain dangerous goods needs to be reduced as much as possible in the transportation process, meanwhile, the property of the dangerous goods is unstable, if the dangerous goods is influenced by large impact and high temperature, the dangerous goods are easy to explode, and the current transportation process has the following three problems:

1. when the explosive dangerous goods are transported, the explosive dangerous goods need to be lightly taken out and stored, the narrow carriage space is not easy to operate by workers, and meanwhile, if the explosive dangerous goods are exploded inside, the harm to the workers due to the narrow space in the carriage is great;

2. in transportation, due to the requirement of damping equipment, the dangerous goods can move in a certain range, but the reliable clamping of the dangerous goods is difficult to guarantee while damping is performed, meanwhile, the single heat dissipation mode in the carriage has a poor effect, and meanwhile, the utilization rate of the carriage space is low;

3. the dangerous goods that cause in the whole carriage easily after the dangerous goods explosion continue to explode, and extinguishing device often can cover all dangerous goods in the carriage simultaneously, and the explosion point that can not be accurate puts out a fire and explosion-proof, causes great economic loss.

Disclosure of Invention

The invention aims to solve the problems in the prior art, provides a dangerous goods transportation carriage which is designed by double layers and multiple storage chambers, has high utilization rate of carriage space, can accurately perform explosion prevention and chain explosion prevention on dangerous goods explosion positions, and increases the capability of clamping dangerous goods and the heat dissipation function while absorbing shock.

In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a hazardous articles transportation carriage, includes the box, box one side is equipped with articulated chamber door, be equipped with fixed connection's the partition of partition upper and lower region in the box, the box is in the baffle top is equipped with two fixed connection's support bar, be equipped with sliding connection's bottom plate on the support bar, bottom plate below both sides are equipped with the flank of tooth, the upper side is equipped with fixed connection's forced air cooling seat in the box, be equipped with the water pump in the box, the box is interior around being equipped with radiating heat dissipation water course, the water pump with the switch-on of heat dissipation water course, set up in the forced air cooling seat with the branch water course of heat dissipation water course switch-on, the baffle below is equipped with the forced air cooling seat equally, the bottom is equipped with on the baffle two support bar parallel arrangement.

Preferably, the air cooling seat is internally provided with a plurality of fan ports, a turbine rod is arranged in the branch water channel, corresponds to the fan ports, and is rotatably connected with one end of the turbine rod entering the fan ports, the turbine rod is fixedly connected with a turbine in the branch water channel, the lower end of the turbine rod is fixedly connected with fan blades at the fan ports, and the turbine can enable the fan blades to generate air flow when being driven by water flow.

Preferably, be equipped with on the bottom plate will the bottom plate is evenly separated into the triplex damping partition, every region on the bottom plate is the locker room, the locker room both sides are equipped with fixed connection's side vibration damping mount, the side vibration damping slot has been seted up in the side vibration damping mount, sliding connection side snubber block in the side vibration damping slot, the side snubber block with be equipped with the absorbing side damping spring of multiunit between the side vibration damping mount, correspond on the bottom plate the locker room is seted up and is had end damping chamber, the bottom plate is in multiunit vibration damping slot has been seted up to end damping chamber below, end damping chamber sliding connection damper plate, damper plate with be equipped with end damping spring between the vibration damping slot.

Preferably, a cover plate in sliding connection is arranged above the side shock absorption seat, a flexible rubber sealing ring is arranged between the cover plate and the side shock absorption seat, a telescopic rotating seat is arranged in the cover plate, a sealing plate is in sliding connection with the telescopic rotating seat, a sealing plate spring is arranged between the telescopic rotating seat and the sealing plate, a plurality of lower vent holes are arranged on the sealing plate, staggered upper vent holes are arranged on the cover plate corresponding to the lower vent holes, an air bag shock absorption seat is fixedly connected below the sealing plate, an air bag plate groove is arranged in the air bag shock absorption seat, an air bag plate is in sliding connection with the air bag plate in the air bag plate groove, a plurality of groups of air bag springs are arranged between the air bag plate and the air bag plate groove, an air bag fixedly connected with the air bag plate is outwards arranged on the air bag plate, inert gas is arranged in the air bag plate groove, air injection holes are arranged on two sides of the air bag plate groove, and pressure valves are arranged in the air injection holes, and the damping clapboard is provided with a limiting plate for limiting the cover plate to slide.

Preferably, a clamping groove is formed in the side damping block, a plurality of groups of rotating rods are rotatably connected in the clamping groove, the rotating rods are fixedly connected with first rotating shafts, a plurality of groups of first rotating shafts are wound with clamping friction belts, the clamping friction belts and the first rotating shafts do not slide, the uppermost rotating rods in the clamping grooves are symmetrically provided with first belt pulleys fixedly connected, one end of each rotating rod is fixedly connected with a first gear, one side, close to the first gear, of each clamping groove is provided with a pre-tightening motor fixedly connected, an output shaft of each pre-tightening motor is fixedly connected with a second gear, the first gear is meshed with the second gear, the side damping seat is correspondingly provided with a tooth groove above the first belt pulley, a tooth surface is arranged in the tooth groove, the clamping groove is rotatably connected with a second rotating shaft below the tooth groove, and the second rotating shaft is fixedly connected with a second belt pulley, the second is fixed connection third gear in the axis of rotation, the second belt pulley with first belt pulley passes through the belt and connects, the third gear with the meshing of tooth's socket internal tooth surface.

Preferably, the box is in the bottom plate below is equipped with the third axis of rotation of rotating the connection, be equipped with fixed connection's correspondence in the third axis of rotation the fourth gear that the support bar set up, the fourth gear with bottom plate bottom flank of tooth meshing, third axis of rotation one end fixed connection fifth gear, the box is in fifth gear below rotates and connects the fourth axis of rotation, be equipped with in the fourth axis of rotation in fifth gear meshing's sixth gear, be equipped with the rotation handle in the fourth axis of rotation, the opposite side is equipped with in the box and makes the lower floor the same structure that the bottom plate shifted out.

Has the advantages that: the double-layer multi-storage-chamber design is carried out on the carriage, the utilization rate of the carriage space is high, and meanwhile, the carriage can be loaded outside, so that the error of workers in loading in a narrow carriage is avoided, and the health of the workers is further harmed;

the box separation design can accurately perform explosion-proof treatment on the explosion position of the dangerous goods, and simultaneously the staggered upper and lower vent holes avoid interlinked explosion, so that the clamping capacity of the dangerous goods is increased by clamping the friction belt while damping;

simultaneously through the combination of water-cooling and forced air cooling make the air in the carriage flow and avoided local position high temperature, make the whole temperature in carriage lower simultaneously, receive and enable the cooling water entering corresponding locker room after great explosion strikes, put out a fire, the inert gas in the gasbag board inslot can get into in the locker room when the explosion, reduces the intensity of burning and explosion.

Drawings

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

FIG. 2 is a schematic diagram of a structural implementation of the present invention;

FIG. 3 is an enlarged view of the point A in FIG. 2;

FIG. 4 is an enlarged view of the point B in FIG. 3;

FIG. 5 is a schematic view of a side shock absorbing clamping arrangement of the present invention;

FIG. 6 is a schematic view of a loading/unloading structure according to the present invention;

in the figure, a box body 10, a box door 11, a water pump 12, a heat radiation water channel 13, an air cooling seat 14, a branch water channel 15, a turbine 16, a turbine rod 17, a fan blade 18, a fan port 19, a bottom plate 20, a support bar 21, a storage chamber 22, a side damper seat 23, a side damper groove 24, a side damper block 25, a side damper spring 26, a tooth groove 27, a clamping groove 28, a rotating rod 29, a first rotating shaft 30, a clamping friction belt 31, a first belt pulley 32, a first gear 33, a pre-tightening motor 34, a second gear 35, a second rotating shaft 36, a second belt pulley 37, a third gear 38, a damper groove 39, a damper plate 40, a bottom damper spring 41, a rubber seal ring 42, an airbag damper seat 43, an airbag 44, an airbag plate 45, an airbag plate groove 46, an airbag spring 47, an air injection hole 48, a buffer groove 49, a limit plate 50, a damper partition plate 51, a cover plate 52, an upper vent hole 53, a seal plate 54, a lower vent hole 55, a seal plate spring 56, a turbine wheel 16, a support plate 30, a support bar 21, a support bar, a second pulley, a third pulley, a second pulley, a third pulley, a second pulley, a third pulley, a second pulley, a third pulley, a second pulley, a third pulley, a pressure valve 57, a third rotating shaft 58, a fifth gear 59, a sixth gear 60, a fourth rotating shaft 61, a rotating handle 62, a fourth gear 63, a partition plate 64 and a bottom damping chamber 65.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

In the description of the present invention, it should be noted that the terms "inside", "below", and the like refer to orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention conventionally place when used, and are used only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

Referring to fig. 1-6, a dangerous goods transportation carriage comprises a box body 10, a hinged box door 11 is arranged on one side of the box body 10, a fixedly connected partition plate 64 for separating an upper region and a lower region is arranged in the box body 10, two support bars 21 fixedly connected are arranged above the partition plate 64 of the box body 10, a bottom plate 20 in sliding connection is arranged on each support bar 21, tooth surfaces are arranged on two sides below the bottom plate 20, a fixedly connected air cooling seat 14 is arranged above the box body 10, a water pump 12 is arranged in the box body 10, a heat dissipation water channel 13 for dissipating heat is arranged in the box body 10 in a surrounding mode, the water pump 12 is communicated with the heat dissipation water channel 13, a branch water channel 15 communicated with the heat dissipation water channel 13 is arranged in the air cooling seat 14, an air cooling seat 14 is also arranged below the partition plate 64, and two support bars 21 arranged in parallel to the support bars 21 on the partition plate 64 are arranged at the bottom of the box body 10.

Furthermore, a plurality of fan openings 19 are formed in the air cooling seat 14, a turbine rod 17 which is rotatably connected with one end entering the fan openings 19 is arranged in the branch water channel 15 corresponding to the fan openings 19, the turbine rod 17 is fixedly connected with a turbine 16 in the branch water channel 15, the lower end of the turbine rod 17 is fixedly connected with fan blades 18 at the part of the fan openings 19, and the fan blades 18 can generate air flow when the turbine 16 is driven by water flow.

Further, be equipped with on the bottom plate 20 and divide into three shock attenuation baffle 51 of triplex with bottom plate 20 on average, the region on every bottom plate 20 is the locker room 22, locker room 22 both sides are equipped with fixed connection's side cushion socket 23, side cushion socket 24 has been seted up in the side cushion socket 23, sliding connection side snubber block 25 in side cushion socket 24, be equipped with multiunit absorbing side damping spring 26 between side snubber block 25 and the side cushion socket 23, it has end cushion chamber 65 to correspond locker room 22 on the bottom plate 20, bottom plate 20 has seted up multiunit cushion chamber 39 in end cushion chamber 65 below, sliding connection damper plate 40 in end cushion chamber 65, be equipped with end damping spring 41 between damper plate 40 and the cushion chamber 39.

Further, a cover plate 52 in sliding connection is arranged above the side shock absorption seat 23, a flexible rubber sealing ring 42 is arranged between the cover plate 52 and the side shock absorption seat 23, a telescopic rotating seat 66 is arranged in the cover plate 52, a sealing plate 54 is in sliding connection with the telescopic rotating seat 66, a sealing plate spring 56 is arranged between the telescopic rotating seat 66 and the sealing plate 54, a plurality of lower vent holes 55 are arranged on the sealing plate 54, staggered upper vent holes 53 are arranged on the cover plate 52 corresponding to the lower vent holes 55, an airbag shock absorption seat 43 is fixedly connected below the sealing plate 54, an airbag plate groove 46 is arranged in the airbag shock absorption seat 43, an airbag plate 45 is in sliding connection with the airbag plate groove 46, a plurality of groups of airbag springs 47 are arranged between the airbag plate 45 and the airbag plate groove 46, an airbag 44 in fixed connection is arranged outside the airbag plate 45, inert gas is arranged in the airbag plate groove 46, air injection holes 48 are arranged on two sides of the airbag plate groove 46, and a pressure valve 57 is arranged in the air injection holes 48, the damper spacer 51 is provided with a stopper plate 50 for restricting the sliding of the cover plate 52.

Furthermore, a clamping groove 28 is formed in the side damping block 25, a plurality of sets of rotating rods 29 are rotatably connected in the clamping groove 28, the rotating rods 29 are fixedly connected with first rotating shafts 30, a plurality of sets of first rotating shafts 30 are wound with clamping friction belts 31, no sliding occurs between the clamping friction belts 31 and the first rotating shafts 30, first belt pulleys 32 which are fixedly connected are symmetrically arranged on the uppermost rotating rod 29 in the clamping groove 28, one end of the rotating rod 29 is fixedly connected with a first gear 33, one side of the clamping groove 28, which is close to the first gear 33, is provided with a pre-tightening motor 34, an output shaft of the pre-tightening motor 34 is fixedly connected with a second gear 35, the first gear 33 is meshed with the second gear 35, a tooth groove 27 is correspondingly formed above the first belt pulley 32 of the side damping seat 23, a tooth surface is arranged in the tooth groove 27, the clamping groove 28 is rotatably connected with a second rotating shaft 36 below the tooth groove 27, and a second belt pulley 37 is fixedly connected on the second rotating shaft 36, the second rotating shaft 36 is fixedly connected with a third gear 38, the second belt pulley 37 is connected with the first belt pulley 32 through a belt, and the third gear 38 is meshed with the inner tooth surface of the tooth groove 27.

Furthermore, a third rotating shaft 58 which is rotatably connected is arranged below the bottom plate 20 of the box body 10, a fourth gear 63 which is fixedly connected and is arranged corresponding to the supporting bar 21 is arranged on the third rotating shaft 58, the fourth gear 63 is meshed with the bottom tooth surface of the bottom plate 20, one end of the third rotating shaft 58 is fixedly connected with a fifth gear 59, the box body 10 is rotatably connected with a fourth rotating shaft 61 below the fifth gear 59, a sixth gear 60 which is meshed with the fifth gear 59 is arranged on the fourth rotating shaft 61, a rotating handle 62 is arranged on the fourth rotating shaft 61, and the other side in the box body 10 is provided with the same structure which enables the bottom plate 20 on the lower layer to move out.

The working principle is as follows: the worker opens the box door 11, further rotates the rotating handle 62 to enable the fourth rotating shaft 61 to rotate, the fourth rotating shaft 61 drives the fixedly connected sixth gear 60 to rotate, and simultaneously drives the meshed fifth gear 59 to rotate, the fifth gear 59 rotates to drive the third rotating shaft 58 to rotate, the fixedly connected fourth gear 63 rotates when the third rotating shaft 58 rotates, and the fourth gear 63 is meshed with the bottom of the bottom plate 20, so that the bottom plate 20 slides out of the support bars 21, the cover plate 52 is opened, dangerous goods are placed in the storage chamber 22, the rotating handle 62 is rotated reversely after the dangerous goods are placed, the bottom plate 20 is sent back to the box body 10, and the box door 11 is closed;

after the dangerous goods are loaded, the pre-tightening motor 34 is driven to drive the second gear 35 to rotate, the second gear 35 drives the meshed first gear 33 to rotate, the first gear 33 drives the rotating rod 29 to rotate, the rotating rod 29 drives the first belt pulley 32 to rotate, the clamping actions are repeatedly operated, and the dangerous goods are pre-clamped;

in the driving process, when the vehicle shakes left and right, the dangerous goods can extrude the clamping friction belt 31, the clamping friction belt 31 is arranged on the first rotating shaft 30, the first rotating shaft 30 is fixedly connected in the clamping groove 28, so the side shock absorption blocks 25 are driven to be pressed into the side shock absorption grooves 24, the side shock absorption springs 26 generate reverse acting force to the side shock absorption blocks 25, the vibration range of the dangerous goods is reduced, meanwhile, when the vehicle shakes up and down, a plurality of bottom shock absorption springs 41 arranged below the shock absorption plates 40 at the bottom of the storage chamber 22 generate good shock absorption effect on the shock absorption plates 40, therefore, the shock influence in the transportation of the dangerous goods is small, meanwhile, the dangerous goods are clamped by the clamping friction belts 31 at the two sides, as the clamping friction belt 31 can rotate around the first rotating shaft 30, when the dangerous goods move up, the clamping friction belt 31 is driven to move upwards, the clamping friction belt 31 drives the first rotating shaft 30 to rotate, the first rotating shaft 30 drives the fixedly connected rotating shaft 29 to rotate, the rotating shaft 29 drives the fixedly connected first belt pulley 32 to rotate, the first belt pulley 32 drives the second belt pulley 37 to rotate through a belt, the second belt pulley 37 drives the fixedly connected second rotating shaft 36 to rotate, the second rotating shaft 36 drives the fixedly connected third gear 38 to rotate, and due to the fact that the third gear 38 is meshed with the inner tooth surface of the tooth groove 27, a part of the side shock absorption block 25 slides out of the side shock absorption seat 23 to further clamp the dangerous goods, the defect of clamping effect in the common shock absorption process is avoided, and meanwhile the air bag 44 at the top of the storage chamber 22 can play a certain buffering effect on the dangerous goods;

when the dangerous goods explode, a plurality of damping springs at the side and the bottom can absorb partial impact, a large amount of impact impacts towards the top, the airbag storage chamber 44 is impacted by explosion, the airbag 44 extrudes the airbag plate 45 into the airbag plate groove 46, meanwhile, inert gas in the airbag plate groove 46 passes through the air injection hole 48, the pressure valve 57 is flushed to enter the storage chamber 22, and oxygen in the storage chamber 22 is consumed due to explosion, the occurrence of inert gas reduces the possibility and effect of combustion in the storage chamber 22, while the closing plate 54 is squeezed into the telescopic rotary seat 66, and since the upper vent hole 53 and the lower vent hole 55 are arranged in a staggered manner, the explosion is prevented from continuing to spread through the upper vent hole 53 and the lower vent hole 55, and meanwhile, part of the explosion impact is absorbed, and the residual hot gas is blown away by the fan blades 18; if the impact force of the explosion is too large, the cover plate 52 may impact the fan blades 18, thereby damaging a part of the fan blades 18, and the turbine rod 17 may be loosened, thereby allowing water to be ejected through the branch water passage 15 to extinguish a corresponding explosion position through the upper and

lower vent holes

53 and 55.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. The utility model provides a hazardous articles transportation carriage, includes box (10), its characterized in that, box (10) one side is equipped with articulated chamber door (11), be equipped with baffle (64) in fixed connection's the partition upper and lower region in box (10), box (10) be equipped with two fixed connection's support bar (21) above baffle (64), be equipped with sliding connection's bottom plate (20) on support bar (21), bottom plate (20) below both sides are equipped with the flank of tooth, be equipped with fixed connection's air-cooled seat (14) in box (10) the upper place, be equipped with water pump (12) in box (10), box (10) inner ring is equipped with radiating heat dissipation water course (13), water pump (12) with heat dissipation water course (13) switch-on, set up in air-cooled seat (14) with branch water course (15) of heat dissipation water course (13) switch-on, baffle (64) below is equipped with likewise forced air cooling seat (14), bottom be equipped with in box (10) with on baffle (64) two of support bar (21) parallel arrangement support bar (21).

2. A hazardous materials transportation vehicle as claimed in claim 1, wherein: a plurality of fan openings (19) are formed in the air cooling seat (14), turbine rods (17) which are rotatably connected and are arranged in the branch water channels (15) corresponding to the fan openings (19) and one ends of which enter the fan openings (19) are fixedly connected with turbines (16) in the branch water channels (15), the lower ends of the turbine rods (17) are arranged at the fan openings (19) and are partially fixedly connected with fan blades (18), and the turbines (16) can enable the fan blades (18) to generate air flow when being driven by water flow.

3. A hazardous materials transportation vehicle as claimed in claim 2, wherein: the bottom plate (20) is provided with three damping clapboards (51) which divide the bottom plate (20) into three parts on average, the area on each part of the bottom plate (20) is a storage chamber (22), two sides of the storage chamber (22) are provided with side shock absorption seats (23) which are fixedly connected, side shock absorption grooves (24) are arranged in the side shock absorption seats (23), a side damping block (25) is connected in the side damping groove (24) in a sliding way, a plurality of groups of damping side damping springs (26) are arranged between the side damping block (25) and the side damping seat (23), a bottom damping cavity (65) is arranged on the bottom plate (20) corresponding to the storage chamber (22), a plurality of groups of damping grooves (39) are arranged on the bottom plate (20) below the bottom damping cavity (65), the bottom damping cavity (65) is connected with a damping plate (40) in a sliding mode, and a bottom damping spring (41) is arranged between the damping plate (40) and the damping groove (39).

4. A hazardous materials transportation vehicle as claimed in claim 3, wherein: the side shock absorber seat (23) top is equipped with sliding connection's apron (52), apron (52) with be equipped with flexible rubber seal (42) between the side shock absorber seat (23), flexible rotation seat (66) have been seted up in apron (52), sliding connection shrouding (54) in flexible rotation seat (66), flexible rotation seat (66) with be equipped with shrouding spring (56) between shrouding (54), seted up a plurality of lower air vent (55) on shrouding (54), correspond on apron (52) lower air vent (55) set up staggered upper air vent (53), shrouding (54) below fixed connection gasbag shock absorber seat (43), gasbag board groove (46) have been seted up in gasbag shock absorber seat (43), sliding connection gasbag board (45) in gasbag board groove (46), gasbag board (45) with be equipped with multiunit gasbag spring (47) between gasbag board groove (46), gasbag board (45) outwards are equipped with fixed connection's gasbag (44), be equipped with inert gas in gasbag board groove (46), gasbag board groove (46) both sides are equipped with has seted up fumarole (48), be equipped with pressure valve (57) in fumarole (48), be equipped with the restriction on shock attenuation baffle (51) apron (52) gliding limiting plate (50).

5. A hazardous materials transportation vehicle of claim 4, wherein: set up in side snubber block (25) and press from both sides tight groove (28), press from both sides tight groove (28) internal rotation and connect multiunit dwang (29), the first axis of rotation (30) of dwang (29) fixed connection, multiunit first axis of rotation (30) are outward around having tight friction area (31) of clamp, press from both sides tight friction area (31) with do not take place to slide between first axis of rotation (30), press from both sides the top in tight groove (28) the symmetry is equipped with fixed connection's first belt pulley (32) on dwang (29), the first gear (33) of dwang (29) one end fixed connection, be close to in tight groove (28) first gear (33) one side is equipped with fixed connection's pretension motor (34), pretension motor (34) output shaft fixed connection second gear (35), first gear (33) with second gear (35) meshing, side cushion socket (23) are in tooth's socket (27) have been seted up in correspondence to first belt pulley (32) top, be equipped with the flank of tooth in tooth's socket (27), press from both sides tight groove (28) and be in tooth's socket (27) below is rotated and is connected second axis of rotation (36), fixed connection second belt pulley (37) is gone up in second axis of rotation (36), fixed connection third gear (38) is gone up in second axis of rotation (36), second belt pulley (37) with first belt pulley (32) pass through the belt and connect, third gear (38) with tooth's socket (27) internal tooth face meshing.

6. A hazardous materials transportation vehicle of claim 5, wherein: box (10) is in bottom plate (20) below is equipped with third axis of rotation (58) of rotating the connection, be equipped with fixed connection's correspondence on third axis of rotation (58) fourth gear (63) that support bar (21) set up, fourth gear (63) with bottom plate (20) bottom flank of tooth meshing, third axis of rotation (58) one end fixed connection fifth gear (59), box (10) are in fifth gear (59) below is rotated and is connected fourth axis of rotation (61), be equipped with on fourth axis of rotation (61) in sixth gear (60) of fifth gear (59) meshing, be equipped with on fourth axis of rotation (61) and rotate (62), the opposite side is equipped with in box (10) and makes the lower floor same structure that bottom plate (20) shifted out.