CN207403631U - A kind of self-discharging semitrailer - Google Patents

Abstract

The utility model provides a kind of self-discharging semitrailer, horizontal dumping device and driving device are set on car body, horizontal dumping device includes supporting track, chain, supporting plate, transmitting device, transmitting device sets two kinds, first, both ends carry the hard plate conveyor of arc panel, second is that one end is fixed, the other end is the flexible transport plate for being not fixed free end, two ways has abandoned supporting plate, and the weight of self-discharging system is greatly reduced in the case of no reduction load bearing stength.During using flexible transport plate, its connection mode with chain is changed, substantially increase assembling and replaces efficiency.The utility model is by changing body structure simultaneously so that horizontal dumping device extends in the horizontal, until substituting platform floor position completely, improves the unloading efficiency of bulk goods.

Description

A kind of self-discharging semitrailer

Technical field

The utility model belongs to vehicle arrangement field, and in particular to a kind of self-discharging semitrailer.

Background technology

At this stage, to improve the rate of discharging of bulk goods loading vehicles, self-tipping type rail is installed additional in car bottom there are many vehicle Road or conveyer belt solve the problems, such as bulk goods self-unloading, but the width of the self-tipping type track that uses of this mode or conveyer belt is too narrow, Bulk goods there are many causing when running its unloading is trapped in the both sides in compartment.Chinese Patent Application No. is 201410151338.7, a kind of self-discharging semitrailer is disclosed, horizontal dumping device is set in car bottom centre position, using one end The fixed other end is free end, and is partially overlapped with each other the rubber belt track taken and put and drives bulk goods unloading, while to reach bulk goods Unloading completely sets L-shaped activity gusset in interior, controls L-shaped activity gusset bulk goods into using hydraulically extensible oil Between position gather.The applicant has applied for a patent, a kind of entitled vehicle-mounted bulk goods self-discharging system, Patent No. early period： 201710652419.9, efficiency is unloaded to improve, by transforming the structure of compartment entirety, load-bearing crossbeam is arranged on car body Both ends, headspace causes horizontal dumping device to substitute platform floor completely and is laid in carriage body bottom, while uses two kinds Carrier is transported, one kind is conveyor, and it is free end that another kind fixes the other end for one end similar with above-mentioned patent, and mutually Partly overlap the transmission board taken and put, and substantially increases unloading efficiency, but the technical solution that above-mentioned two patent uses has following lack Point：

1st, transmission board or rubber belt track are fixed on driving chain using traditional fixed form, that is, bolt or rivet etc., taken When it is laborious, generally require manually consuming one by one and be lot more time to be mounted on driving chain, simultaneous transmission plate or rubber It is also very bothersome when the damage of glue crawler belt needs replacing, it is not particularly convenient.

2nd, due to fixing the flexible transfer plate or rubber belt track that the other end is free end using one end, when transport has During the bulk goods of certain humidity or viscosity, bulk goods is easily adhered in transmission board or rubber belt track, and is passed through free end and be scattering into drive Dynamic system it is interior, cause operation for a long time that the device in drive system can be lost.

Utility model content

For more than technological deficiency, the technical solution that the utility model uses above-mentioned utility model is improved, and is eliminated Disadvantages described above.

The technical solution adopted in the utility model is：A kind of self-discharging semitrailer is provided, including tractor, car body, Car body includes horizontal dumping device and driving device；Horizontal dumping device is in carriage body bottom, for holding unloading bulk goods, water Flat dumping device includes supporting track, chain, transmitting device, and supporting track is perpendicular with crossbeam and is fixed on the top of crossbeam, Idler wheel is set on chain, and idler wheel rotates on supporting track, and with wing plate on the outer plate of chain, transmitting device is by several head The transmission board composition that tail mutually overlaps, transmission board are fixed on wing plate, and transmitting device can be moved with chain.

Driving device includes drive sprocket and driven sprocket, drive shaft and driven shaft, hydraulic motor, in car body bottom Rear end drive shaft is set, front end sets driven shaft, and the both ends of drive shaft and driven shaft set bearing block, drive sprocket and driven Sprocket wheel also is located at the rear end and front end of car body bottom, and drive sprocket sets on the driving shaft and turns with drive shaft turns It is dynamic, the chain ring around car body front and back end driven sprocket and drive sprocket and be meshed with drive sprocket driven Sprocket wheel drives circulation rotating, and the hydraulic motor drives drive shaft turns as power source.

Preferably, transmission board is hard plate, and the medium position of transmission board is fixed on wing plate, and the both ends of transmission board are arc Face, arcwall face is the part of adjacent two pieces of transmission boards overlap joint, when transmission board is turned at drive sprocket, the phase between arcwall face It mutually slides, but adjacent arcwall face has part mutually overlap joint always so that transmitting device is constantly in closed state, prevents bulk goods It falls into inside driving device.

Preferably, outer plate all on chain is respectively provided with wing plate, and a transmission board is fixed on each pair wing plate.

Preferably, transmission board is flexible board, and one end of transmission board is by setting the wing of a retaining sleeve fixation in its lower section On plate, the other end is free end, one end for being overlapped on neighboring transmission plate and being fixed on wing plate of the free end portion overlapping of transmission board, The cross-sectional type of retaining sleeve is c-type pipe clamp type, and transmission board is embedded in retaining sleeve, and retaining sleeve fixes transmission by bolt or rivet One end of plate, the bottom of retaining sleeve are welded with backing plate, and backing plate is I-shaped, and the wing plate on the carrier bar of chain is the vertical of no bending Plate is provided with mounting hole on wing plate and is passed through for pin, and the groove part of drum can be embedded in wing plate on backing plate, and then transmission board is led to Crossing retaining sleeve and backing plate can be movably attached on chain.

Preferably, outer plate all on chain is respectively provided with wing plate, and wing plate is the riser for no bending, and outside chain Carrier bar is in same plane, and an outer plate is at least spaced between the outer plate being connected with transmission board, does not connect transmission board Transmission board support tube, transmission board support tube and the connection mode of wing plate and the company of retaining sleeve and wing plate are connected on the wing plate of outer plate It is the same to connect mode.

Preferably, the position of the wing plate on chain board is in one end of outer plate.

Preferably, horizontal dumping device substitutes platform floor and is laid in carriage body bottom completely, the supporting track, chain The set of device of item and drive sprocket composition sets three Dao Huo tetra-.

Preferably, the two side ends lower part of car body sets the support crossbeam of drum, and support crossbeam is in the both ends of crossbeam Position, bearing block are fixed on the web of support crossbeam, are supported and are set horizontal box beam between crossbeam and suspension, will by box beam Support crossbeam is fixed on suspension.

Preferably, box beam is straight trip box beam or spill box beam, and the both ends setting notch of box beam is big for accepting drum support The lower wing plate of beam, the bottom of notch are provided with groove for engaging the lower wing plate of drum support crossbeam.

Preferably, box beam is web hollow type drum beam there are two drum beam or tools with single web.

Preferably, installation spring bearing is also set up in drive shaft, spring bearing is fixed on crossbeam.

Preferably, idler wheel is arranged on the chain shaft in chain, and supporting track is square track, and the width of supporting track is small In the width of the idler wheel on chain, the diameter of idler wheel is less than the height of chain and chain-plate.

Preferably, the rear cargo door of car body sets fluid pressure type to open locking device, fluid pressure type open locking device include hydraulic cylinder, Jam plate, limiting device, the upper end of rear cargo door and the upper end of carriage body are articulated and connected, in being located on one end of hydraulic cylinder and rear cargo door Epimere position is a little articulated and connected, and the other end of hydraulic cylinder and one end of jam plate are articulated and connected by rotation axis, and jam plate is Strip, the medium position of jam plate are hingedly fixed in the middle downside of carriage body side carriage plate, and the other end of jam plate sets latch hook, rear cargo door The lock shaft that upper setting can engage with latch hook when hydraulic cylinder jacks up rear cargo door, departs from lock shaft by leverage latch hook, this The limiting device of Shi Suoshu can limit the position that hydraulic cylinder is connected with jam plate and further move down so that latch hook is just off lock Axis, hydraulic cylinder move up jack-up rear cargo door.

Preferably, limiting device is the fixed seat for being arranged on hydraulic cylinder and jam plate link position, and fixed seat is fixed on side In carriage, fixed seat is provided with /V slot hole, and hydraulic cylinder is connected with jam plate in the rotation axis insertion /V slot hole of one end, and /V is long Hole limits the mobile range that hydraulic cylinder is connected with jam plate one end by controlling rotation axis.

Preferably, limiting device includes upper plate and lower roof plate, and upper plate and lower roof plate are fixed on side carriage plate, upper plate The top of one end is connected with jam plate positioned at hydraulic cylinder, lower roof plate is located at the lower part that hydraulic cylinder is connected one end with jam plate, upper top The shift position of jam plate when rear cargo door is closed in plate limitation, the shift position of jam plate when rear cargo door is opened in lower roof plate limitation.

The beneficial effects of the utility model：1st, transmitting device is optimized, two ways may be employed, first, two Hard plate conveyor of the end with arc panel, second is that one end is fixed, the other end is the flexible transport plate for being not fixed free end, two kinds of sides Formula has abandoned supporting plate, and the weight of self-discharging system is greatly reduced in the case of no reduction load bearing stength.

When the 2nd, using flexible transport plate, its connection mode with chain is changed, substantially increase assembling and replaces efficiency.

3rd, the utility model optimizes carriage body construction, two support crossbeams is moved to the end of crossbeam, carriage body Centre reserves enough space load level dumping devices, and then horizontal dumping device sinks to loading, and does not increase carriage body additionally Height, while horizontal dumping device extends in the horizontal, until the width of carriage body is fully achieved, therefore horizontal dumping device can Not occupy the space of carriage body additionally, the carriage body constancy of volume is maintained.

4th, the utility model substantially increases the unloading efficiency of bulk goods, by calculating with setting 1/3rd carriage body width Horizontal dumping device is compared, and the utility model need to only increase the power of 1.3 times of hydraulic motor, can reach unloading for 2.5 times of raising Carry efficiency.

5th, the rear cargo door of the utility model car body sets fluid pressure type to open locking device so that rear cargo door realization melts automatically It opens and is closed, improve operating efficiency.

Description of the drawings

Fig. 1 is the overall structure diagram of the utility model；

Fig. 2 is the utility model rearview；

Fig. 3 is the top view of the first embodiment of the utility model；

Fig. 3-1 is the partial schematic diagram of the first embodiment of the utility model；

Fig. 3-2 is the first embodiment afterbody sectional view of the utility model；

Fig. 4 is the top view of second of embodiment of the utility model；

Fig. 4-1 is the partial schematic diagram of second of embodiment of the utility model；

Fig. 4-2 is second of embodiment afterbody sectional view of the utility model；

Fig. 4-3 is second of embodiment backing structure schematic diagram of the utility model；

Fig. 5 is the structure diagram that the utility model body structure uses spill box beam；

Fig. 6 is the concrete structure schematic diagram of spill box beam；

Fig. 7 is that box beam is the cross-sectional structure schematic diagram with two webs；

Fig. 8 is structure diagram when the utility model back carriage plate is closed using fixed seat；

Fig. 9 is structure diagram when the utility model back carriage plate is opened using fixed seat；

Figure 10 is structure diagram when the utility model back carriage plate is closed using top plate；

Figure 11 is structure diagram when the utility model back carriage plate is opened using top plate.

In figure：1- carriage bodies；2- transmitting devices；Transmission board in the first embodiment of 201-；The first implementation of 2011- Arcwall face in mode in transmission board, the transmission board in second of embodiment of 202-；2021- retaining sleeves；2022- backing plates； 2023- transmission board support tubes；3- chains；Wing plate in the first embodiment of 301-；302- idler wheels；303- outer plates；304- Wing plate in second of embodiment；4- supporting tracks；5- spring bearings；6- bearing blocks；7- supports crossbeam；8- box beams；801- Notch on box beam；The groove of 802- notches lower part；9- drive sprockets；10- suspensions；11- drive shafts；12- crossbeams；13- hydraulic pressure Motor；14- rear cargo doors；15- hydraulic cylinders；16- jam plates；1601- latch hooks；17- fixed seats；18- lock shafts；19- upper plates；20- Lower roof plate.

Specific embodiment

Specific embodiment of the present utility model is described further below in conjunction with the accompanying drawings.

As shown in Fig. 1,2,3,3-1,3-2,5,6,7, the first embodiment of the utility model is：A kind of self-unloading is provided Semitrailer, including tractor, car body 1, car body includes two parts, horizontal dumping device and driving device, horizontal Dumping device is in carriage body bottom, and for holding unloading bulk goods, horizontal dumping device includes supporting track 4, chain 3, transmitting device 2, supporting track 4 is perpendicular with crossbeam 12 and is fixed on the top of crossbeam 12, and idler wheel 302 is set on chain 3, and idler wheel 302 is propping up It is rotated on support track 4, with wing plate 301 on the outer plate 303 of chain 3, transmitting device 2 is the biography mutually overlapped by several head and the tail Input board 201 forms, and transmission board is fixed on wing plate 301, and transmitting device 2 can be moved with chain 3.

Driving device includes drive sprocket 9 and driven sprocket, drive shaft 11 and driven shaft, hydraulic motor 13, in compartment compartment The rear end of 1 bottom of body sets drive shaft 11, and front end sets the both ends setting bearing block 6 of driven shaft, drive shaft 11 and driven shaft, drives Movable sprocket 9 and driven sprocket also are located at the rear end and front end of 1 bottom of car body, and drive sprocket 9 is arranged in drive shaft 11 simultaneously As drive shaft 11 rotates and rotate, chain 3 around 1 front and back end of car body driven sprocket and drive sprocket 9 and with The be meshed driven movable sprocket 9 of drive sprocket 9 drives circulation rotating, and hydraulic motor 13 drives drive shaft 11 to rotate as power source. Hydraulic motor 13 can respectively set one in the both sides of carriage body 1, only can also set one in one side.

Further, transmission board 201 is using hard plate, can be steel material or aluminum alloy material, be carried on chain 3 The outer plate 303 of wing plate 301 can fix a transmission board 201, and outer plate can also be spaced between adjacent transmission board 201 303, the medium position of transmission board 201 is fixed on by modes such as bolt or rivets on wing plate 301, and the both ends of transmission board 201 are Arcwall face 2011, the radian of arcwall face 2011 are the rotation radian of drive sprocket 9, and arcwall face 2011 is adjacent two pieces of transmission boards The part of 201 overlap joints, when transmission board 201 is turned at drive sprocket 9, the mutual slip between arcwall face 2011, but it is adjacent Arcwall face 2011 have part mutually overlap joint always so that transmitting device can be whole wraps up internal driving device Come, driving device is in closed state, therefore prevents bulk goods from falling into inside driving device.The arcwall face 2011 of protuberance is unloading simultaneously During load bulk goods can be driven to be moved to carriage body afterbody, improve the efficiency of unloading.

Further, horizontal dumping device substitutes platform floor and is laid in carriage body bottom completely, horizontal certainly for enhancing Handler holds unloading strength, and the set of device that supporting track 4, chain 3 and drive sprocket 9 form sets three Dao Huo tetra-, when The road number of different number can also be so set, while the width for accordingly increasing transmission board reaches and is laid in carriage body bottom.

Further, for the horizontal dumping device of installation is made not increase the height of carriage body additionally, the branch of support carriage body Support crossbeam 7 shifts to both ends, it is made to be in the end positions of crossbeam 12, central space is transferred to other use out, and bearing block 6 is sunk fixation On the web of support crossbeam 7, while to make bearing strength constant, support and horizontal box beam is set between crossbeam 7 and suspension 10 8, by box beam 8 crossbeam 7 will be supported to be fixed on suspension 10.Box beam 8 can be box beam or the spill box beam of keeping straight on, preferably recessed Shape box beam, the both ends of box beam 8 set notch 801 to be used to accept the lower wing plate that drum supports crossbeam 7, the bottom of the notch 801 Groove 802 is provided with for engaging the lower wing plate of drum support crossbeam 7.Box beam 8 is for the drum beam with single web or with two A web hollow type drum beam.

Further, installation spring bearing 5 is also set up in drive shaft 11, spring bearing 5 is fixed on crossbeam 12.So The supporting point for adding drive shaft 11 is set, enhances intensity.

Further, idler wheel 302 is arranged on the chain shaft in chain 3, supporting track 4 be square track, supporting rail The width in road 4 is less than the width of the idler wheel 302 on chain 3, and the diameter of idler wheel 302 is less than the height of 3 carrier bar of chain.So set It puts and ensure that support strength of the supporting track 4 to chain 3, while reduce as far as possible on supporting track 4 and chain 3 again Idler wheel 302 between frictional force.

Further, as shown in Fig. 8,9,10 and 11, the rear cargo door 14 of car body 1 sets fluid pressure type to open locking device, Fluid pressure type, which opens locking device, includes hydraulic cylinder 15, jam plate 16, limiting device, and the upper end and the upper end of carriage body 1 of rear cargo door 14 are hinged Connection, one end of hydraulic cylinder 15 with being located at a little being articulated and connected for middle upper section part on rear cargo door 14, hydraulic cylinder 15 it is another One end is articulated and connected with locking one end of 16 plates by rotation axis, and jam plate 16 is strip, and the medium position of jam plate 16 is hingedly fixed In the middle downside of 1 side carriage plate of carriage body, the other end of jam plate 16 sets latch hook 1601, and being set on rear cargo door 14 can be with latch hook 1601 The lock shaft 18 of engaging.

Limiting device can be two kinds, a kind of to be arranged on the fixed seat 17 of hydraulic cylinder 15 and 16 link position of jam plate, Fixed seat 17 is fixed on side carriage plate, and fixed seat 17 is provided with /V slot hole, and hydraulic cylinder 15 is connected the rotation of one end with jam plate 16 In axis insertion /V slot hole, /V slot hole limits the shifting that hydraulic cylinder 15 is connected with jam plate 16 one end by controlling rotation axis Dynamic amplitude；Another kind includes upper plate 19 and lower roof plate 20, and upper plate 19 and lower roof plate 20 are fixed on side carriage plate, upper plate 19 The top of one end is connected with jam plate 16 positioned at hydraulic cylinder 15, lower roof plate 19 is located at hydraulic cylinder 15 and is connected one end with jam plate 16 Lower part, the shift position of jam plate 16 when rear cargo door 14 is closed in the limitation of upper plate 19, the limitation of lower roof plate 20 are locked when opening rear cargo door 14 The shift position of plate 16.

When hydraulic cylinder 15 jacks up rear cargo door 14, lock shaft 18 is departed from by leverage latch hook 1601, at this time fixed seat 17 and lower roof plate 20 can limit the position that hydraulic cylinder 15 is connected with jam plate 16 and further move down so that latch hook 1601 is just de- From lock shaft 18, hydraulic cylinder 15, which moves up, jacks up rear cargo door 14.When hydraulic cylinder 15, which is shunk, closes rear cargo door 14, fixed seat at this time 17 and upper plate 19 can be moved up further with backstop hydraulic cylinder 15 with the position that jam plate 16 is connected so that 15 top of hydraulic cylinder It shrinks, and then rear cargo door 14 is driven to close, latch hook 1601 locks lock shaft 18.

Fluid pressure type, which opens locking device, can set one, can also respectively set one in the both sides of rear cargo door 14.

As shown in Fig. 4,4-1,4-2,4-3, second of embodiment of the utility model is different from the first embodiment Be the transmitting device changed in horizontal unloading device, other devices are identical, and the transmission board 202 of second of embodiment is using soft Property plate, such as rubber material, one end of transmission board 202 are fixed by setting retaining sleeve 2021 on wing plate 304 in its lower section, The other end is free end, and the neighboring transmission plate 202 that is overlapped on of the free end portion overlapping of transmission board 202 is fixed on wing plate 304 One end, one end of transmission board 202 are inserted in retaining sleeve 2021, and the cross-sectional type of retaining sleeve 2021 is c-type pipe clamp type or horseshoe type, Retaining sleeve 2021 fixes one end of transmission board 202 by bolt or rivet, and the bottom of retaining sleeve 2021 is welded with backing plate 2022, backing plate 2022 is I-shaped, and the wing plate 304 on the outer plate 303 of chain 3 is the riser of no bending, is opened on wing plate 304 There is mounting hole to be passed through for pin, the groove part of drum can be embedded in wing plate 304 on backing plate 2022, and then transmission board 202 is logical Crossing retaining sleeve 2021 and backing plate 2022 can be movably attached on chain 3.The benefit so set be on the one hand in workshop i.e. Transmission board 202 and retaining sleeve 2021 can be assembled, further 2021 upper padding plate 2022 of retaining sleeve is fixed to by pin On chain 3, the difficulty of assembling and the labor intensity of worker are significantly reduced, another aspect transmission board is replaced if any damage Come also particularly convenient.

Further, outer plate 303 all on chain 3 is respectively provided with wing plate 304, and wing plate 304 is for no bending Riser, be in same plane with 3 outer plate 303 of chain, one be at least spaced between the outer plate 303 being connected with transmission board 202 A outer plate connects transmission board support tube 2023 on the wing plate for the outer plate for not connecting transmission board, further enhances transmission board 202 bearing strength, transmission board support tube 2023 and the connection mode of wing plate 304 and the connection of retaining sleeve 2021 and wing plate 304 Mode is the same.

Further, the position of the wing plate 304 on 3 outer plate 303 of chain may be at conventional outer plate interposition It puts, but is preferably in one end of outer plate 303, the supporting point of load capacity can so be caused to be in leaning on per a chain Medium position, the stress of idler wheel 302 evenly, reduce the loss of idler wheel 302.

The above is two kinds of specific embodiments of the utility model, and certain the utility model can also be in above base It is further improved on plinth, for example the side carriage plate bottom of car body sets baffle plate, baffle plate is made of inclined plate and portrait, is used It is scattered in the gap for preventing bulk goods from being formed between side carriage plate and conveyor；For another example can be provided on side carriage plate several emergent Wicket stops if entire driving device breaks down in unloading, and opening emergent wicket can continue, by manually unloading, to ensure The completion of unloading.The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, for For those of ordinary skill in the art, various modifications and changes may be made to the present invention；All spirit in the utility model Within principle, any modifications, equivalent replacements and improvements are made should be included within the scope of protection of this utility model.

Claims (15)

1. a kind of self-discharging semitrailer, including tractor, car body, the car body includes horizontal dumping device with driving Dynamic device；

The horizontal dumping device is in carriage body bottom, and for holding unloading bulk goods, the horizontal dumping device includes support Track, chain, transmitting device, the supporting track is perpendicular with crossbeam and is fixed on the top of crossbeam, on the chain Idler wheel is set, idler wheel rotates on supporting track, with wing plate on the outer plate of the chain, if the transmitting device be by The transmission board composition that dry head and the tail mutually overlap, the transmission board are fixed on wing plate, and transmitting device can be moved with chain；

The driving device includes drive sprocket and driven sprocket, drive shaft and driven shaft, hydraulic motor, at car body bottom The rear end in portion sets drive shaft, and front end sets driven shaft, and the both ends of drive shaft and driven shaft set bearing block, drive sprocket and from Movable sprocket also is located at the rear end and front end of car body bottom, drive sprocket set on the driving shaft and with drive shaft turns and Rotate, the chain ring around car body front and back end driven sprocket and drive sprocket and be meshed with drive sprocket driven Movable sprocket drives circulation rotating, and the hydraulic motor drives drive shaft turns as power source.

2. self-discharging semitrailer according to claim 1, it is characterised in that：The transmission board is hard plate, transmission board Medium position is fixed on wing plate, and the both ends of transmission board are arcwall face, and the arcwall face is adjacent two pieces of transmission boards overlap joint Part, when transmission board is turned at drive sprocket, the mutual slip between arcwall face, but adjacent arcwall face has part always Mutually overlap joint so that transmitting device is constantly in closed state, prevents bulk goods from falling into inside driving device.

3. self-discharging semitrailer according to claim 2, it is characterised in that：All outer plates are respectively provided with the wing on the chain Plate fixes a transmission board on each pair wing plate.

4. self-discharging semitrailer according to claim 1, it is characterised in that：The transmission board be flexible board, the transmission One end of plate is by setting retaining sleeve to fix on wing plate in its lower section, and the other end is free end, the free end of transmission board Partly overlapping one end for being overlapped on neighboring transmission plate and being fixed on wing plate, the cross-sectional type of the retaining sleeve is c-type pipe clamp type, is passed In input board insertion retaining sleeve, retaining sleeve fixes one end of transmission board, the bottom weldering of the retaining sleeve by bolt or rivet It is connected to backing plate, the backing plate is I-shaped, and the wing plate on the carrier bar of the chain is the riser of no bending, the wing plate On be provided with mounting hole and passed through for pin, the groove part of drum can be embedded in wing plate on the backing plate, and then transmission board passes through Retaining sleeve and backing plate can be movably attached on chain.

5. self-discharging semitrailer according to claim 4, it is characterised in that：All outer plates are respectively provided with the wing on the chain Plate, the wing plate are the risers for no bending, and same plane, the exterior chain being connected with transmission board are in chain board An outer plate is at least spaced between plate, transmission board support tube, transmission are connected on the wing plate for the outer plate for not connecting transmission board Plate support tube is with the connection mode of wing plate as the connection mode of retaining sleeve and wing plate.

6. self-discharging semitrailer according to claim 5, it is characterised in that：At the position of wing plate on the chain board In one end of outer plate.

7. according to the self-discharging semitrailer described in claim 1 or 2 or 3 or 4 or 5 or 6, it is characterised in that：The horizontal self-unloading Device substitutes platform floor and is laid in carriage body bottom completely, and the supporting track, chain and drive sprocket form a set of Device sets three Dao Huo tetra-.

8. self-discharging semitrailer according to claim 7, it is characterised in that：The two side ends lower part of the car body sets work The support crossbeam of type, the support crossbeam are in the end positions of crossbeam, and the bearing block is fixed on the abdomen of support crossbeam On plate, horizontal box beam is set between support crossbeam and the suspension, by box beam crossbeam will be supported to be fixed on suspension.

9. self-discharging semitrailer according to claim 8, it is characterised in that：The box beam is straight trip box beam or spill box Beam, the both ends of the box beam set notch to be used to accept the lower wing plate of drum support crossbeam, and the bottom of the notch is provided with groove For engaging the lower wing plate of drum support crossbeam.

10. self-discharging semitrailer according to claim 9, it is characterised in that：The box beam is the work with single web There are two web hollow type drum beams for type beam or tool.

11. self-discharging semitrailer according to claim 10, it is characterised in that：Installation support is also set up in the drive shaft Bearing, spring bearing are fixed on crossbeam.

12. self-discharging semitrailer according to claim 11, it is characterised in that：The idler wheel is arranged on the chain in chain On axis, the supporting track is square track, and the width of the supporting track is less than the width of the idler wheel on chain, the rolling The diameter of wheel is less than the height of chain and chain-plate.

13. self-discharging semitrailer according to claim 9, it is characterised in that：The rear cargo door of the car body sets hydraulic pressure Formula opens locking device, and the fluid pressure type, which opens locking device, includes hydraulic cylinder, jam plate, limiting device, the upper end of the rear cargo door It is articulated and connected with the upper end of carriage body, a point articulated company of middle upper section part is located on one end of the hydraulic cylinder and rear cargo door It connects, the other end of hydraulic cylinder and one end of jam plate are articulated and connected by rotation axis, and the jam plate is strip, in jam plate Portion position is hingedly fixed in the middle downside of carriage body side carriage plate, and the other end of jam plate sets latch hook, energy is set on the rear cargo door Enough lock shafts engaged with latch hook when hydraulic cylinder jacks up rear cargo door, depart from lock shaft by leverage latch hook, described at this time Limiting device can limit the position that hydraulic cylinder is connected with jam plate and further move down so that latch hook is just off lock shaft, hydraulic pressure Oil cylinder moves up jack-up rear cargo door.

14. self-discharging semitrailer according to claim 13, it is characterised in that：The limiting device is to be arranged on hydraulic oil The fixed seat of cylinder and jam plate link position, the fixed seat are fixed on side carriage plate, and fixed seat is provided with /V slot hole, hydraulic oil Cylinder is connected with jam plate in the rotation axis insertion /V slot hole of one end, and /V slot hole limits hydraulic cylinder by controlling rotation axis The mobile range of one end is connected with jam plate.

15. self-discharging semitrailer according to claim 13, it is characterised in that：The limiting device includes upper plate under Top plate, the upper plate and lower roof plate are fixed on side carriage plate, and upper plate is located at hydraulic cylinder and the upper of one end is connected with jam plate Portion, lower roof plate are located at the lower part that hydraulic cylinder is connected one end with jam plate, the mobile position of jam plate when rear cargo door is closed in upper plate limitation It puts, the shift position of jam plate when rear cargo door is opened in lower roof plate limitation.