Novel self-dumping tractor-semitrailer

Abstract

The invention relates to transport equipment, in particular to a tractor-semitrailer with a dumping device. The tractor-semitrailer comprises a frame 1, a compartment arranged on the frame and the dumping device, wherein the dumping device comprises a driven chain wheel and a driving chain wheel arranged on the front and rear ends of the frame, a hydraulic motor connected with the driving chain wheel, and two drive chains surrounding the driven chain wheel and the driving chain wheel. The tractor-semitrailer is different from the traditional technology in that outer plates of the drive chains are divided into two kinds, namely conventional outer plates and special-shaped outer plates, more than one conventional outer plate is arranged between two special-shaped outer plates, circumferential outer circles of rollers of the chains protrude out of the upper and lower edges of inner plates or the conventional outer plates, plate lugs with outer planes higher than the circumferential outer circles of the rollers are arranged on the special-shaped outer plates, a supporting plate is fixed on each plate lug, a rubber track is fixed on each supporting plate, and two guide rails fixed on the frame are used for supporting the rollers. Compared with the prior art, supporting rolls are abandoned by the invention, the structure is simplified, and the manufacturing cost is reduced.

Description

Technical field [0001] The invention relates to a transport equipment, in particular to a semi-trailer with an unloading device. Background technique [0002] The applicant had previously applied for "A Bulk Cargo Semi-trailer Compound Unloading Device", with two drive chains connected to both sides of the driving wheel and the driven wheel, and a support plate evenly arranged on the two drive chains. A number of supporting rollers that can freely rotate along the traveling direction of the transmission chain are arranged in parallel under the pallet, and the supporting rollers are used to lift and drive the pallet to move, so as to realize the unloading of goods. However, this structure still has certain defects: because the supporting roller is required for Lifting the flexible pallet, so the number of supporting rollers needs to be large, otherwise the flexible pallet will collapse under the gravity of the goods, causing the goods to scatter, and it is not economically appropr...

AI Technical Summary

Problems solved by technology

[0002] The applicant had applied for "A Composite Unloading Device for Bulk Cargo Semi-trailer" earlier, the two transmission chains connected on both sides of the driving wheel and the driven wheel, and the supporting plates evenly arranged on the two transmission chains, Under the pallet, several supporting rollers are arranged in parallel and can rotate freely along the traveling direction of the transmission chain. The supporting rollers are used to lift and drive the pallet to advance, so as to realize the unloading of goods, but this structure still has certain defects: since the supporting rollers are required for Lifting a flexible pallet requires a large number of support rollers, otherwise the flexible pallet will collapse under the gravity of the goods, causing the goods to scatter, and it is not economically appropriate to set a large number of support rollers of

In addition, although each support roller can freely rotate along with the progress of the pallet it holds, the rotational friction of a single support roller may not be large, but in the case of a large number and a large load of goods, The overall friction should not be underestimated. When the traction force provided by the hydraulic motor is not enough to offset the overall friction, the chain will not rotate and the goods cannot be unloaded. Otherwise, a more powerful hydraulic motor will be required, which will also cause cost On the other hand, the transmission chain also needs to bear greater tension, and the specification and performance requirements of the transmission chain will also increase.

[0003] In order to achieve the purpose of fully unloading, this invention application also has movable panels on the inner side of the side panels of the compartment, and the outer side of the curved part of the movable panels forms a lifting space along the longitudinal direction of the compartment between the side panels of the compartment and the floor of the compartment. Several lifting cylinders, one end of the lifting cylinder is fixed to the junction of the side wall and the bottom wall of the carriage, and the other end is fixed to the bending part. Obviously, the lifting cylinder will occupy a certain space, but the piston rod of the lifting cylinder is ideal. Under normal conditions, the maximum length of the extension cannot be greater than the length of the cylinder body. In order to realize the rotation of the movable plate, the curvature of the curved part of the movable plate must be larger, so as to provide a larger expansion and contraction space for the lift cylinder, which will require compression of the effective load. Cargo volume, which is unacceptable to both the semi-trailer manufacturer and the semi-trailer user

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