Dump Truck Pivot Water Glass Investment Casting

Product Introduction

Mining dump truck is a construction vehicle used to transport coal and sand and gravel in the field. In a sense, off-highway mining dump trucks belong to the category of construction machinery, but mining dump trucks, as special vehicles for off-road transportation, have large carrying capacity, high driving speed and poor operating conditions. The road conditions and surroundings used exceed the technical regulations for road transport, and its overall structure and dump truck pivot water glass investment casting dimensions also exceed those commonly used for road transport vehicles. The frame structure, the frame of the mining dump truck is a key component to withstand various moments, and the working quality of the electro-hydraulic system is closely related to it, and its strength and service life play a decisive role in the safety and life of the mining dump truck.
In order to ensure the normal operation of the hydraulic system, the design of the frame has the following characteristics: high-strength alloy steel plate casting welded structure frame, variable section box beam, integral front bumper, main and auxiliary gantry beam, tubular rear cross member increase the overall torsion resistance of the frame; The lower axle bracket of the lifting cylinder is made of alloy casting with large fillet structure to reduce the stress concentration; the rear suspension fulcrum is at the lower part of the ammonium axle point of the carriage, and the barrel load is directly transmitted to the wheel through the suspension; the lower bearing of the lifting cylinder is welded to the torsion tube of the middle beam and the box-shaped section frame; the front bumper is combined with industrial design, and the appearance is beautiful and removable.
 

• Steering structure
The steering mechanism of mining dump trucks is divided into two types, including integral and disconnected, and the choice of its scheme is related to the type of suspension adopted. There are a few different ways to turn to a trapezoidal layout, such as front-mounted, rear-mounted, and cross-mounted. In general, independent suspension uses a disconnected steering trapezoidal mechanism instead of an integral steering trapezoidal mechanism. Both options must have the right selection of the steering trapezoidal parameters to ensure that the wheels traveling on different circumferences are not sliding pure rolling at all when steering, so that all wheels can be turned to the center at the same instant.
• Lifting structure
The commonly used lifting mechanism uses hydraulic pressure to provide lifting power, which is divided into direct push lifting mechanism and connecting rod lifting mechanism. The direct push lifting mechanism uses a hydraulic cylinder to connect with the carriage and the body to directly lift the carriage and dump. Therefore, it has the advantages of compact structure, simple layout and high lifting efficiency. Generally, two-stage or three-stage telescopic cylinders are used to meet the lifting working stroke. The direct push lifting mechanism is divided into two types: front and rear according to the different positions of the cylinder layout.
The direct push front lifting mechanism arranges the cylinder at the front of the carriage. At this time, the cylinder has a longer lifting arm in the lifting process, and the off-highway mining dump truck makes the lifting force of the cylinder smaller. But in order to make the carriage reach a certain lifting angle, the working stroke of the oil cylinder is larger, so it is necessary to use a multi-stage telescopic oil cylinder, which is generally used for light road dump trucks. The rear cylinder is supported in the middle of the carriage, so the lifting force of the cylinder is large and the stroke of the cylinder is small. However, in order to obtain a larger lifting angle, a two-stage or three-stage double-acting cylinder is generally used. There are two types of commonly used connecting rod combination lifting mechanisms: forward push type and rear push type.
• Suspension structure
The wheels and frame are flexibly connected through the oil and gas suspension device to alleviate the body vibration caused by uneven road surface and increase driving smoothness. With the exception of the knuckle, wheels and rear axle, all the weight of the tipper is borne by the front and rear suspension units. The suspension cylinder is an important part of ensuring the smoothness and operational stability of the vehicle, and is the general name of all the force transmission connection devices between the body and the wheels, and its performance affects the safety of the whole vehicle. A suspension cylinder is a precision component that has undergone a special process and is usually rarely damaged. However, due to the long-term work of the suspension cylinder in harsh environments and complex working conditions, cracks will occur when the cylinder block is deformed by force.
• Compartment structure
The bottom surface of the V-shaped trunk is a single-slope structure, with good bearing performance, stable dumping process and easy control. The trunk is made of high-strength low-alloy steel plate, which has good wear resistance and impact resistance. Adopt integrated full-length longitudinal beam, improve the strength of trunk support beam, especially the support part of trunk pivot; in order to make the trunk fall on the frame stably and accurately, adopt wedge-shaped shock absorbing device when the front end of the trunk is in contact with the platform, which is good for neutrality, avoids the impact of the vehicle swinging left and right on the frame in the running process, and the weight of the trunk is carried together with the longitudinal beam shock absorbing pad at the bottom of the trunk. The rear of the compartment is exhausted, and the material is heated as a whole to prevent icing and unclean materials.
• Cab
The cab has an ergonomic interior layout and an adjustable steering operating system to ensure comfortable operation and safe driving. The off-highway mining dump truck dashboard display and buttons are in line with man-machine control. The door adopts a double-layer sealing structure, and the Trimark door lock is generally used to ensure the sealing and sound insulation effect of the cab.
 

Detection Systems

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