Improved amphibious excavator

Abstract

The improved amphibious excavator comprises a machine body, a vehicle frame, a cross beam and a buoyancy tank and further comprises a first fixing frame, a second fixing frame and a plug pin block, the first fixing frame and the second fixing frame comprise cavities defined by plates, inserting grooves are formed in the cavities, and the first fixing frame and the second fixing frame are movably connected through the plug pin block; the bolt block is provided with two symmetrical embedded blocks, a groove is formed between the embedded blocks, and the two embedded blocks penetrate through the inserting grooves of the first fixing frame and the second fixing frame respectively and are embedded into the cavities of the first fixing frame and the second fixing frame. The four first fixing frames are symmetrically installed on the upper portion of the inner side face of the buoyancy tank in a pairwise mode, and the first fixing frames are arranged on the upper portions of the installation holes. The four second fixing frames are symmetrically installed on the upper portion of the outer side face of the frame, and the second fixing frames are arranged on the upper portion of the cross beam. The connecting mode of the buoyancy tank and the cross beam is simple and convenient, the stability is higher, the rigidity is better, the maintenance frequency is shortened, and safety accidents are avoided.

Description

technical field [0001] The invention belongs to the field of special excavators, and in particular relates to an improved amphibious excavator. Background technique [0002] The amphibious excavator not only has the functions of a general-purpose excavator, but also has the characteristics of ultra-low grounding specific pressure and water buoyancy. The amphibious excavator has the advantages of high buoyancy, which can ensure the normal operation and safe floating of the whole machine in muddy water. In actual construction, it can drive in water, swamps and soft ground without any other auxiliary equipment consignment, and can enter and exit waters by itself by configuring the engine. [0003] But existing amphibious excavator chassis is connected with buoyancy box as specification attached figure 1 As shown, the excavator is connected with the chassis, and the chassis is installed on the frame. The frame is connected with two tubular beams through hoops. The beams pass t...

AI Technical Summary

Problems solved by technology

During long-term use, frequent friction between the wall of the beam and the inner hole of the pontoon causes the gap between the hole and shaft to expand. The main result is the wear of the pontoon wall, which eventually causes the pin to break or fall off. Transmission of force between the pontoon and the beam;

[0005] 2. In the process of installing the pin, it is necessary to align the cross beam with the pin hole of the pontoon, or make it a pin hole after insertion, which increases the difficulty of installing the pin. Rotation, twisting and deformation occur between the holes of the pontoons, it is extremely difficult to install new pins, and installation and disassembly are very difficult; the current solution is to weld iron hooks between the two pontoons and connect them with chains to limit the lateral movement of the pontoons ;

[0006] 3. After the pin breaks or falls off, if it is not found in time, the pontoon will come out from the beam, causing a safety accident with serious consequences;

[0007] 4. When carrying a large-tonnage excavator, it is necessary to add a pontoon outside the existing pontoon. The connection structure between the existing beam and the pontoon will affect the newly added pontoon, and it needs to be removed, which is more troublesome

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