Background technology
Self-discharging semitrailer is turned over, as it is shown in figure 1, include: vehicle frame 2, be arranged on the walking mechanism 3 of position rearward below vehicle frame 2 and be arranged on the compartment 4 above vehicle frame 2 after existing.
Vehicle frame 2 lower front is provided with supporting leg 26, and when semitrailer separates with tractor, supporting leg 26 supports vehicle frame together with the walking mechanism 3 at vehicle frame 2 rear.
It is also associated with oil cylinder 5 between front wall and vehicle frame 2 front end in compartment 4, to lift compartment 4 by oil cylinder 5, realization unloading of being turned in compartment 4.
Oil cylinder 5 is arranged on vehicle frame 2 by cylinder installation seat and is positioned at the position in towing pin 24 front, when trailer lifting operation, oil cylinder 5 can produce the biggest support reaction to vehicle frame anterior (the mainly position between cylinder installation seat and towing pin), and supporting leg 26 is arranged on the position at towing pin 24 rear, thus this support reaction cannot be resisted, for ensureing the security and stability after lifting, prevent trailer front portion stress from damaging, it is desirable to the position between oil cylinder 5 to the towing pin 24 that trailer is anterior is it is necessary to have support accordingly.When self-discharging semitrailer mounting lifting, trailer front portion is using tractor itself as supporting, but this unloading mode can take tractor, reduces the service efficiency of tractor.
For improving tractor service efficiency, some support meanss that can be temporarily installed on semitrailer are released on market, Chinese patent such as Application No. 201020126465.9, its open one gets rid of trailer Special supporting device, hang when tractor is de-, when trailer needs to get rid of extension lifting operation, semitrailer front portion can be temporarily mounted to by getting rid of trailer Special supporting device, there is provided for trailer front portion and support, improve the security and stability of oil cylinder lifting operation, but this install additional temporarily get rid of trailer Special supporting device due to use nut screw formula flexible pipe structure, required installing space is big, stroke is shorter, bottom Guan Bi is the biggest, after installation, the road clearance is relatively low, thus can produce with tractor and interfere, thus the anterior close oil cylinder of trailer and the position of towing pin cannot be arranged on.Also having part user to use and add the stupid method of temporary fixing rack below trailer towing pin, but temporary fixing rack is not only wasted time and energy, work efficiency is low, and due to cannot onboard, often there is situation about cannot timely use, delay car unloading operation.
Utility model content
Of the present utility model essentially consisting in provides a kind of self-discharging semitrailer and vehicle frame thereof, and the Front-end Design of this vehicle frame has support means so that semitrailer is capable of getting rid of extension lifting operation.
For solving above-mentioned technical problem, the utility model proposes a kind of self-discharging semitrailer vehicle frame, including: main body of vehicle frame, being arranged on the towing plate of main body of vehicle frame front bottom surface and be arranged on the towing pin on this towing plate, the position before the described towing pin of correspondence of described main body of vehicle frame front end has support means.
More preferably, described support means can be supported in ground by lifting, upset or expanding-contracting action, or, it is retracted to its bottom surface and is not less than the bottom surface of towing plate.
More preferably, described support means includes: two support seat and two support bars, described two bottom surfaces supporting both sides and described support seat that seat is separately fixed at described main body of vehicle frame front end are not less than described towing plate bottom surface, and corresponding one of each support bar supports seat and can move up and down relative to described support seat.
More preferably, described support seat being provided with gear and the rotating mechanism rotated in order to driven gear, described support bar is disposed with the tooth bar engaged with described gear along its length.
More preferably, described rotating mechanism includes rocking handle, and described rocking handle is coaxially connected with described gear, or is connected with described gear by drive mechanism.
More preferably, it is provided with locking device between described support seat and support bar, described locking device includes: be arranged on locking hole, the hole, multiple location being arranged on the position, close top and bottom of described support bar and the lock pin supported on seat, and described lock pin inserts described locking hole and hole, arbitrary location and is fixed on described support seat by described support bar.
More preferably, described support seat is sleeve-shaped, and described support bar is arranged in the support seat of sleeve-shaped.
More preferably, described support bar includes: the body of rod and be hinged on body of rod bottom one and support sole, the Breadth Maximum of the described body of rod is less than the Breadth Maximum of described support seat inner core and can move up and down in described support seat, the width of described support sole is more than the Breadth Maximum of described support seat inner core, the bottom surface of described support seat is higher than described towing plate bottom surface one setpoint distance, to form one in described support seat bottom face in order to accommodate the receiving space of described support sole.
More preferably, described support bar moves up and down relative to described support seat with hydraulic cylinder or cylinder for power source.
More preferably, described support means includes: two hinged seats and two support bars, the bottom surface of both sides and described hinged seat that described two hinged seats are separately fixed at described main body of vehicle frame front end is not less than described towing plate bottom surface, described two support bars one_to_one corresponding respectively is hinged on each hinged seat and can overturn up or down relative to hinged seat, and when described support bar is flipped up putting in place, the bottom surface of support bar is not less than the bottom surface of described towing plate.
More preferably, described support bar is connected by the piston rod of toggle with hydraulic cylinder or cylinder and realizes spinning upside down.
For solving above-mentioned technical problem, this utility model also proposes a kind of self-discharging semitrailer, the walking mechanism that including vehicle frame, is arranged at vehicle frame lower rear and be arranged at the compartment above vehicle frame, is provided with elevating ram between front end, described compartment and vehicle frame front end, described vehicle frame is above-mentioned dumper frame.
Compared with prior art, this utility model has the advantages that this utility model installs support means additional by the position before the towing pin of semitrailer front end, make semitrailer when carrying out getting rid of extension lifting operation, can be using support means as support, the opposing oil cylinder support reaction to vehicle frame front portion, ensure the security and stability after lifting, prevent trailer front portion stress from damaging;In addition, the support means of this utility model preferred embodiment uses pitch wheel tooth bar to realize support bar lifting, the most simple to operate, easy to use, and required installing space is little, and stroke is bigger, bottom Guan Bi is the least, after installation, the road clearance is higher, will not produce with tractor and interfere, thus not affect tractor and semitrailer normally mounts.
Accompanying drawing explanation
The structural representation of the existing self-discharging semitrailer vehicle frame of Fig. 1;
Fig. 2 is the structural representation of self-discharging semitrailer vehicle frame side of the present utility model;
Fig. 3 is self-discharging semitrailer side of the present utility model near the support means structural representation in working order of the first embodiment of front position;
Fig. 4 be Fig. 3 along A to structural representation;
Fig. 5 is self-discharging semitrailer side of the present utility model near the support means of the first embodiment of front position at the structural representation of off working state;
Fig. 6 be Fig. 5 along B to structural representation;
Fig. 7 is the schematic diagram that the support means of the second embodiment is connected to semitrailer hitch structure both sides;
Fig. 8 is the structure chart of the drive mechanism of the support means of the second embodiment.
Description of reference numerals is as follows: 2, vehicle frame;23, towing plate;24, towing pin;25, support means;251, seat is supported;252, support bar;2521, the body of rod;2522, sole is supported;253, drive mechanism;2531, tooth bar;2532, gear;2533, rotating mechanism;256, lock pin;25a, support means;251a, support seat;252a, support bar;253a, drive mechanism;2531a, oil cylinder;2532a, piston rod;2533a, toggle;254a, rotating shaft;26, supporting leg.
Detailed description of the invention
In order to further illustrate principle of the present utility model and structure, in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail.
This utility model, when describing orientation, is front with orientation, dumper headstock place, after orientation, tailstock place is.
Self-discharging semitrailer of the present utility model includes vehicle frame, the walking mechanism being arranged at vehicle frame lower rear and is arranged at the compartment above vehicle frame, is provided with elevating ram between front end, compartment and vehicle frame front end.
Refering to Fig. 2 to Fig. 8, this self-discharging semitrailer vehicle frame includes: main body of vehicle frame 21, is arranged on the towing plate 23 of main body of vehicle frame 21 front bottom surface and is arranged on the towing pin 24 on this towing plate 23.
Main body of vehicle frame 21 includes: two longerons and be connected to the crossbeam between two longerons.
The position of the close front end that towing plate 23 is connected between two longerons, towing pin 24 is fixed on towing plate 23 and extends downwardly from towing plate 23.When semitrailer docks with tractor, tractor saddle is positioned at below towing plate 23 and slides into along towing plate 23 and mounts with towing pin 24.
Position after the corresponding towing pin 24 of main body of vehicle frame 21 is provided with supporting leg 26, and when semitrailer separates with tractor, supporting leg 26 supports vehicle frame together with the walking mechanism 3 at vehicle frame 2 rear.
Position before the corresponding towing pin 24 of main body of vehicle frame 21 is additionally provided with support means 25, and this support means 25 can be supported in ground, it is also possible to packs up and is positioned on towing plate 23.
Support means 25 can switch on duty or off working state by lifting, upset or expanding-contracting action, during duty, support means 25 can be supported in ground, thus when semitrailer separates with tractor and during elevating ram (when getting rid of extension lifting operation), trailer front portion can be using support means 25 as support, the opposing oil cylinder support reaction to vehicle frame front portion, it is ensured that the security and stability after lifting, prevents trailer front portion stress from damaging;During off working state, support means 25 can be retracted to its bottom surface be not less than the bottom surface of towing plate 23 by lifting, upset or expanding-contracting action, it is ensured that tractor and semitrailer normally mount, and do not affect normal transport operation.
The concrete structure of support means 25 is varied, enumerates the structure of several preferred embodiment below with reference to accompanying drawing.
Support means first embodiment.
Refering to Fig. 2 to Fig. 6, the support means 25 of the present embodiment includes: two support seat 251 and two support bars 252, two bottom surfaces supporting both sides and support seat 251 that seat 251 is separately fixed at main body of vehicle frame front end are not less than the bottom surface of towing plate 23, and each support bar 252 correspondence is arranged on one and supports on seat 251.
It is preferred that support seat 251 is in sleeve-shaped, support bar 252 is arranged in the support seat 251 of sleeve-shaped.
Support bar 252 includes: the body of rod 2521 supports sole 2522 with being hinged on the body of rod 2521 bottom one, supports sole 2522 and can strengthen the contact area with ground, improves the stability used.
The Breadth Maximum of the body of rod 2521 is less than supporting the Breadth Maximum of seat 251 inner core and can move up and down in supporting seat 251, support the Breadth Maximum of sole 2522 more than the Breadth Maximum supporting seat 251 inner core, thus when the body of rod 2521 moves up and puts in place, support sole 2522 and can be exposed to support the lower section of seat 251.
Tractor is affected and semitrailer normally mounts for avoiding supporting sole 2522, support seat 251 when mounted, preferably make its bottom surface bottom surface one setpoint distance higher than towing plate 23, this setpoint distance is substantially equal to support the height of sole 2522, thus form a receiving space supporting seat 251 bottom surface, just can accommodate support sole 2522, make support sole 2522 be not less than the bottom surface of towing plate 23 when support bar 252 collapsed state, it is ensured that tractor and semitrailer can normally mount.
Support means 25 also includes one in order to drive support bar 252 relative to supporting the drive mechanism 253 that seat 251 moves up and down.
It is preferred that in the present embodiment, drive mechanism 253 includes: tooth bar 2531, gear 2532 and the rotating mechanism 2533 rotated in order to driven gear 2532.
Tooth bar 2531 is arranged on support bar 252 and arranges along support bar 252 length direction.
Gear 2532 arranges on support seat 251 and can be meshed with gear 2532.
Rotating mechanism 2533 is connected with gear 2532 and can rotate by driven gear 2532.
In the present embodiment, rotating mechanism includes rocking handle, this rocking handle is coaxially connected with gear 2532, or by drive mechanism, such as gear train etc., it is connected with gear 2532, thus directly or indirectly driven gear 2532 rotates, it is achieved gear 2532 forward or reversion rotate, and engage with the tooth bar 2531 on support bar 252 while rotating, make support bar 252 decline relative to support seat 251 and be supported in ground or rising and pack up, thus switch on duty or off working state.
Gear 2532 in order to drive each support bar 252 to move can connect a rocking handle respectively, to drive each support bar 252 to rise or fall respectively, also the gear 2532 of wherein side can be connected a rocking handle, and by a connecting rod coaxially connected opposite side gear 2532, thus two support bars 252 can be driven to realize rising or falling by a rocking handle.
Support the locking device being additionally provided with between seat 251 and support bar 252, with when support bar 252 rises or falls and moves into place, by locking device, support bar 252 is fixed with supporting seat 251, limit the two relative motion.
Locking device can be the structures such as hook, snap close, latch.
Preferably, in the present embodiment, locking device includes: be arranged on locking hole, the hole, multiple location being arranged on the position, close top and bottom of support bar 252 and the lock pin 256 supported on seat 251, and lock pin 256 can be inserted into locking hole and hole, arbitrary location and is fixed on by support bar 252 on support seat 251.Specifically, when support bar 252 drops to contact ground, the hole, location of the close upper end of support bar 252 is directed at the locking hole supported on seat 251, insert lock pin 256 and support bar 252 can be locked at the state of stretching out, in like manner, when support bar 252 rises and puts in place, now, support bar 252 is directed at the locking hole supported on seat 251 near the hole, location of lower end, inserts lock pin 256 and support bar 252 can be locked at collapsed state.
It is worth mentioning that, in other embodiments, support bar 252 can also move up and down relative to supporting seat 251 with hydraulic cylinder or cylinder for power source, i.e., the above-mentioned drive mechanism 253 in order to drive support bar 252 to move up and down relative to support seat 251 is replaced to the actuating unit such as cylinder or oil cylinder, support bar 252 directly can be connected with the piston rod of cylinder or oil cylinder, it is possible to by linkage, piston rod with cylinder or oil cylinder is connected indirectly.
Support means the second embodiment.
Refering to Fig. 7, support means 25a of the present embodiment includes: two hinged seat 251a and two support bar 252a.
The bottom surface of both sides and hinged seat 251a that two hinged seat 251a are separately fixed at main body of vehicle frame front end is not less than the bottom surface of towing plate 23.
Two support bar 252a one_to_one corresponding respectively are hinged on each hinged seat 251a and can overturn up or down relative to hinged seat 251a.
Hinged seat 215a can include two hinged seat board 2511a and the rotating shaft 254 being rotatably connected on 2511a on two hinged seats.During duty, support bar 252a can downwardly turn over and be supported in ground by 254a axis around the shaft, thus facilitates semitrailer to carry out getting rid of extension lifting operation, it is ensured that the security and stability after lifting, prevents trailer front portion stress from damaging;During off working state, support bar 252a can be flipped up and be retracted to its bottom surface and be not less than the bottom surface of towing plate 23 by 254a axis around the shaft, it is ensured that tractor and semitrailer normally mount, and does not affect normal transport operation.
Support bar 252a can switch on duty or off working state by manual upset, it is possible to realizes upset by drive mechanism.
Drive mechanism can be the actuating unit such as oil cylinder or cylinder.
Refering to Fig. 8, in the present embodiment, drive mechanism 253a includes: oil cylinder 2531a and the toggle 2533a hinged with cylinder piston rod 2532a, the other end that toggle 2533a is not connected with cylinder piston rod 2532a is fixing with rotating shaft 254 to be connected, support bar 252a is connected by the piston rod 2532a of toggle 2533a and hydraulic cylinder 2531a, when piston rod 2532a stretches out or retracts, toggle 2532a is i.e. driven to rotate, thus rotarily drive rotating shaft 254a by toggle 2532a and rotate forward or backwards, and then drive and fix, with rotating shaft 254a, the support bar 252a being connected and be flipped up or downwardly turn over.
In like manner, in other embodiments, it is possible to above-mentioned oil cylinder is replaced to cylinder.
These are only preferable possible embodiments of the present utility model, and unrestricted protection domain of the present utility model, the equivalent structure change done by all utilization this utility model description and accompanying drawing content, it is all contained in protection domain of the present utility model.