CN215794115U

CN215794115U - Four-bridge pull airbag low-flat-plate transport vehicle

Info

Publication number: CN215794115U
Application number: CN202121370244.0U
Authority: CN
Inventors: 曹春立; 郭启; 唐斌; 刘文艺; 杨思田
Original assignee: Xuzhou Huabang Special Vehicle Co ltd
Current assignee: Xuzhou Huabang Special Vehicle Co ltd
Priority date: 2021-06-18
Filing date: 2021-06-18
Publication date: 2022-02-11
Anticipated expiration: 2031-06-18

Abstract

The utility model discloses a four-axle pull air bag low-flat transport vehicle which comprises a gooseneck beam, a middle vehicle frame and a rear vehicle frame, wherein a gooseneck oil cylinder is arranged at the front end of the gooseneck beam and is used for being connected with a traction seat of a tractor and controlling the lifting of the gooseneck beam by inputting power through a power unit, two ends of the middle vehicle frame are respectively and fixedly connected with the gooseneck beam and the rear vehicle frame, at least four vehicle axles are arranged on the rear vehicle frame, and an air suspension is reversely mounted on each vehicle axle. The utility model belongs to the technical field of special vehicles, and compared with the prior art, the utility model has the advantages that: the lifting of the middle frame cargo bed is realized by adjusting the lifting of the gooseneck beam and the rear frame. The rear side air is suspended and lifted, and compared with a hydraulic axis, the pneumatic lifting device has the advantages of low cost and flexible and safe use.

Description

Four-bridge pull airbag low-flat-plate transport vehicle

Technical Field

The utility model relates to the technical field of special vehicles, in particular to a four-axle pull air bag low-flat transport vehicle.

Background

The front part of a cargo platform of a common low-flat-bed semitrailer is directly welded on a front gooseneck through a traction pin, a rear suspension of the semitrailer is usually in the form of a steel plate spring structure or an air suspension, and the height of the cargo platform of the semitrailer with the structure is not adjustable. When transporting ultrahigh goods, the height of the cargo platform is designed to be too high, and vehicles cannot pass through the bridge and the tunnel due to the limit height of the bridge and the tunnel when passing through the bridge and the tunnel in the transportation process; if the height of the cargo platform is too low, the vehicle can not pass through the road surface when encountering a concave-convex road surface or a hump road surface in the transportation process; when the transverse gradient is large, the gravity center of the ultrahigh cargo is greatly deviated, and the vehicle is easily turned over. Therefore, how to solve the problem of adjusting the height of the cargo platform and ensure the passing ability and stability of the vehicle up and down is a key factor for determining whether the low-flat-bed semi-trailer which is a cheap transportation mode can be used for transporting the ultrahigh cargo.

Therefore, in order to enable the semitrailer to better and more safely transport large goods, more and more semitrailers adopt a cargo bed liftable flat plate structure. At present, a hydraulic axis vehicle and a powered gooseneck lifting device are often adopted to realize the lifting of a trailer, and the cost is higher. Therefore, a low-flat-bed transportation semitrailer with low cost and safe and stable use is urgently needed.

Disclosure of Invention

The utility model aims to solve the technical problem of overcoming the technical defects and providing the four-bridge drawing air bag low-flat transport vehicle which is low in cost, flexible and safe to use.

In order to achieve the purpose, the utility model adopts the technical scheme that: the design provides a low flatbed transport vechicle of four bridge pull gasbags, including gooseneck roof beam, well frame and back frame, the front end of gooseneck roof beam is equipped with the gooseneck hydro-cylinder, the gooseneck hydro-cylinder is used for connecting the traction seat of tractor, and thereby controls through power unit input power the lift of gooseneck roof beam, the both ends difference fixed connection of well frame gooseneck roof beam and back frame, be equipped with four at least axles on the back frame, every all install the air suspension of formula of turning over on the axle.

Further, the air suspension comprises an air suspension front support, an air bag, a spring beam and a shock absorber, the air suspension front support is arranged at the bottom of the rear frame, the spring beam is movably hinged to the bottom of the air suspension front support from top to bottom, the axle is mounted on the upper side of the spring beam through a U-shaped bolt, the air bag is mounted at the extending end of the spring beam and extends upwards to be connected with the rear frame, and the shock absorber is connected with the air suspension front support and an upper plate spring seat of the axle.

Furthermore, the middle frame is composed of two sections of inner and outer sleeve beams, wherein the outer sleeve beam is welded with the gooseneck beam, the inner sleeve beam is connected with the rear frame through a pin shaft of a plug connector, and the inner sleeve beam and the outer sleeve beam are fixed through a drawing pin shaft.

Furthermore, a movable cross beam concave cargo platform with an upward arc opening is arranged in the middle of the middle frame.

Furthermore, a plurality of rope rings are arranged on the side edge of the middle frame.

After adopting the structure, compared with the prior art, the utility model has the advantages that: the utility model provides a four-axle pull air bag low flat transport vehicle, which can realize the lifting function of a low flat semi-trailer through the linkage of a gooseneck cylinder and an air bag suspended by air, and a frame in the semi-trailer can be pulled, extended and shortened, so that the four-axle pull air bag low flat transport vehicle has high use flexibility; the rear frame with the four-axle structure can improve the transportation stability; the cost of the scheme is greatly reduced compared with a hydraulic axis product.

Drawings

Fig. 1 is a schematic front view of a four-axle pull airbag low flat transport vehicle according to the present invention.

Fig. 2 is a schematic top view of the four-axle pull airbag low flat transporter of the present invention.

Fig. 3 is a schematic view of an air suspension structure of a four-axle pull airbag low flat transport vehicle.

FIG. 4 is a cross-sectional structural diagram of a middle frame of the four-axle pull airbag low flat transport vehicle.

As shown in the figure: 1. the vehicle comprises a gooseneck beam, a middle vehicle frame, a rear vehicle frame, a gooseneck cylinder, a gooseneck oil cylinder, a power unit, a vehicle axle, a vehicle air suspension, an air bag, a spring beam, a shock absorber, a pin type ladder stand, a vehicle air suspension front support, a drawing pin shaft, a movable cross beam concave goods platform, a rope ring, a steel belt, a drawing pin shaft, a paving plate, a gas storage cylinder, a U-shaped bolt, a bridge upper plate spring seat, an inner sleeve beam, an outer sleeve beam, an air storage cylinder, a U-shaped bolt, a spring seat, a bridge upper plate spring seat, a bridge lower plate spring seat, a bridge upper plate, a bridge lower plate, a bridge upper plate spring seat, a bridge upper plate, a bridge lower plate, a bridge upper plate, a bridge lower plate, a lower plate.

Detailed Description

The following description is only a preferred embodiment of the present invention, and does not limit the scope of the present invention, and the present invention is further described with reference to the accompanying drawings and embodiments.

Example 1, see FIGS. 1-4: comprises a gooseneck beam 1, a middle frame 2 and a rear frame 3.

The front end of the gooseneck beam 1 is provided with a gooseneck oil cylinder 4, the gooseneck oil cylinder 4 is used for being connected with a traction seat of a tractor, and power is input through a power unit 5 so as to control the lifting of the gooseneck beam 1. The gooseneck beam 1 is a device which is matched with the traction seat to realize traction, wherein the gooseneck beam 1 is hinged with the traction seat, the cylinder body of the gooseneck cylinder 4 is fixedly arranged on the gooseneck beam 1, and the piston rod of the gooseneck cylinder extends downwards, so that the height of the gooseneck beam 1 can be increased when the gooseneck cylinder 4 extends downwards, otherwise, the height of the gooseneck beam 1 can be reduced.

The middle frame 2 is in a drawable structural form, specifically, the middle frame 2 is composed of two sections of an inner sleeve beam 21 and an outer sleeve beam 22 which are connected with each other in a sliding manner, the inner sleeve beam 21 and the rear frame are fixed by a pin shaft in an inserting connection manner, and the inner sleeve beam and the outer sleeve beam are fixed by a drawable pin shaft 13 after being drawn to a fixed length. The middle frame 2 is of a frame structure, 3 350-wide movable cross beam concave cargo beds 14 with upward openings are placed on the middle of the main beam by welding steel strips 16 in the middle of the main beam and paving planks 17, the surface of the middle movable cross beam concave cargo bed 14 is 290 cm away from the ground, the longitudinal beam can be pulled by 5 meters and is low away from the ground, and a tank body can be transported; the side is provided with a string loop 15 for tying a string.

The middle frame 2 is also required to be connected with a front gooseneck beam 1 and a rear frame 3, the front end of the middle frame is fixedly connected with the gooseneck beam 1, and the rear end of the middle frame is fixedly connected with the rear frame 3 through a plug-in connector.

The rear frame 3 is a frame with hub tires, on which four axles 6 are provided, the four axles 6 being mounted at the bottom of the rear frame 3. In order to raise and lower the rear frame 3, an air suspension 7 is also required to be provided on the axle 6. In order to facilitate height adjustment, the air suspension 7 is of a reverse type. Specifically, the air suspension 7 comprises an air suspension front support 12, an air bag 8, a spring beam 9 and a shock absorber 10, wherein the air suspension front support 12 is arranged at the bottom of the rear frame 3, the spring beam 9 is movably hinged to the bottom of the air suspension front support 12 from top to bottom, the axle 6 is mounted on the upper side of the spring beam 9 through a U-shaped bolt, the air bag 8 is mounted at the extending end of the spring beam 9 and extends upwards to be connected with the rear frame 3, and the shock absorber 10 is connected with the air suspension front support 12 and an axle upper plate spring seat 20. The tail end of the rear frame 3 is hinged with a pin type ladder stand 11.

In practical use, the movable cross beam concave cargo bed 14 surface on the bridge can descend 60mm and ascend 110 mm. The gooseneck beam 1 is lifted through the gooseneck oil cylinder 4, the rear frame 3 is lifted through the air bag 8, the front and the rear of the movable cross beam concave goods table 14 of the middle frame 2 can be lifted, and the lower wing surface of the girder can fall to the ground. The transportation tank has excellent use flexibility and stability for large objects such as transportation tank bodies and the like.

The present invention and its embodiments have been described above, and the description is not intended to be limiting, and the drawings are only one embodiment of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. The utility model provides a low flat transport vechicle of four bridges pull gasbag, includes gooseneck boom (1), well frame (2) and back frame (3), its characterized in that: the front end of gooseneck roof beam (1) is equipped with gooseneck hydro-cylinder (4), gooseneck hydro-cylinder (4) are used for connecting the traction seat of tractor, and thereby control through power pack (5) input power the lift of gooseneck roof beam (1), the both ends difference fixed connection of well frame (2) gooseneck roof beam (1) and back frame (3), be equipped with four at least axle (6) on back frame (3), every all install air suspension (7) of formula of turning over on axle (6).

2. The four-axle pull airbag low flatbed transport vehicle of claim 1, wherein: air suspension (7) are including air suspension fore-stock (12), gasbag (8), spring beam (9) and bumper shock absorber (10), air suspension fore-stock (12) set up back frame (3) bottom, spring beam (9) are activity hinge from top to bottom in air suspension fore-stock (12) bottom, axle (6) are installed with U type bolt spring beam (9) upside, gasbag (8) are installed in the end that stretches out of spring beam (9), and upwards stretch out and be connected with back frame (3), air suspension fore-stock (12) and bridge upper leaf spring seat (20) are connected in bumper shock absorber (10).

3. The four-axle pull airbag low flatbed transport vehicle of claim 1, wherein: the tail end of the rear frame (3) is hinged with a pin type ladder (11).

4. The four-axle pull airbag low flatbed transport vehicle of claim 1, wherein: the middle frame (2) is composed of two sections of inner and outer sleeve beams, wherein the outer sleeve beam (22) is welded with the gooseneck beam (1), the inner sleeve beam (21) is connected with the rear frame (3) through a pin shaft of a plug connector, and the inner sleeve beam (21) and the outer sleeve beam (22) are fixed through a drawing pin shaft (13).

5. The four-axle pull airbag low flatbed transport vehicle of claim 4, wherein: the middle of the middle frame (2) is provided with a movable cross beam concave cargo bed (14) with an upward arc opening.

6. The four-axle pull airbag low flatbed transport vehicle of claim 4, wherein: the side of the middle frame (2) is provided with a plurality of rope rings (15).