Steering driving device of electric pallet truck

Abstract

The invention relates to the technical field of transportation equipment, in particular to a steering driving device of an electric pallet truck. The steering driving device comprises a handle, two carrying plates, a support, a driving mechanism, a transmission mechanism and a mounting bin, the carrying plates are connected with the bottom of the support, the mounting bin is located between the two carrying plates, a plurality of synchronous wheels are arranged in the mounting bin, the transmission mechanism comprises a synchronous chain and a first rotating shaft, all the synchronous wheels are sleeved with the synchronous chain, the first rotating shaft is coaxially connected with the synchronous wheel closest to the support in the mounting bin, the upper end of the first rotating shaft penetrates and extends to the position above the mounting bin, a second rotating shaft is arranged above the first rotating shaft, the two rotating shafts can be in coaxial butt joint through flanges, the driving mechanism is arranged on the support and is in transmission connection with the upper end of the second rotating shaft, the synchronous wheel, away from the support, in all the synchronous wheels is provided with a third rotating shaft coaxial with the synchronous wheel, the lower end of the third rotating shaft is provided with a steering wheel, and the handle is provided with a control mechanism. The steering driving device is low in steering cost and is easy to maintain.

Description

technical field [0001] The invention relates to the technical field of transportation equipment, in particular to a steering drive device for an electric pallet truck. Background technique [0002] Pallet truck refers to a handling vehicle that loads and unloads palletized goods and greatly reduces the intensity of manual transportation. However, the existing pallet truck has a complex structure and is inconvenient to maintain. [0003] According to the above problems, after retrieval, the Chinese invention patent with publication number CN105883680A discloses an improved electric pallet truck steering drive structure, which belongs to the technical field of ground transportation equipment. The improved electric pallet truck steering drive structure includes: a frame assembly; a driving wheel assembly for driving the frame assembly to walk, the driving wheel assembly is rotatably installed behind the frame assembly as a whole, and the driving wheel assembly includes a drive...

AI Technical Summary

Problems solved by technology

[0004] The disadvantage of the above-mentioned patents is that: the oil cylinder assembly is used to drive the support seat assembly and the drive wheel assembly to rotate as a whole to achieve steering. This steering method requires a very large torque and high steering costs. The requirements for the oil cylinder assembly are high, resulting in the overall assembly. Heavy, high energy consumption for daily use

[0005] In addition, according to the disclosure content and the accompanying drawings, the process of manually controlling the steering should be activated through the button, but this method is not convenient enough and does not fit the human habit of sense of direction and direction control

[0006] At the same time, as shown in the accompanying drawings, the pallet area parts and driving parts of the pallet truck are fixed together, but in daily use, there are many goods in the pallet area, and the operator may have some unevenness on the ground due to the aforementioned obstacles during use. It is difficult to find objects in time. When the front of the pallet truck touches the aforementioned objects, it will vibrate, and the vibration force will be transmitted to the drive components, that is, electrical components such as motors. At the same time, the position of the drive motor is not damped. It will cause certain vibration damage to the driving components; at the same time, the electric pallet is driven by the motor through the gearbox and the driving wheel, so the relationship between the three is fixed together. If the traditional method of shock absorption is used, the cost is large and the structural design is very complicated. It also increases the difficulty of assembly and post-maintenance

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