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What are the factors that affect the performance of the steel crawler chassis?


The steel crawler chassis is the main component of the machine lock rod rotary drilling rig to support the walking, and is the main component of the rotary drilling rig second only to the engine and hydraulic system. Impact engineering drilling rigSteel crawler chassisThere are many factors. If the design is not thoughtful and unreasonable, there will be problems such as difficulty in walking and steering, and poor acceleration performance. Xiaobian for you to analyze the general impact of engineering drilling rig steel crawler chassis performance factors.

1. External resistance of the ground to crawler travel

The running resistance of the track on the ground refers to the running resistance caused by the deformation of the ground. The maintenance of the rotary drilling rig is related to the specific pressure of the track ground, the position of the center of mass of the vehicle and the ground conditions. Since the steel crawler chassis of engineering drilling rigs generally requires operation on poor ground, when selecting the specific resistance coefficient of the operation, the various working environments should be fully considered and the appropriate resistance coefficient should be selected.


影响钢制履带底盘性能的因素有哪些?


2. Internal resistance

The internal resistance mainly refers to the walking resistance generated by the internal friction of the walking mechanism.Steel crawler chassisIt is generally composed of a driving mechanism, a crawler, a roller, a guide wheel, a sprocket or a drag chain plate. When walking, the friction between these mechanisms will inevitably produce a certain internal resistance. The type of rotary drilling rig, this resistance is generally composed of five parts:

(1) When the track shoe of the steel track chassis bypasses the guide wheel and the drive wheel, the frictional resistance when the track pin and the track pin sleeve rotate relative to each other. This resistance is related to the diameter of the track pin and the coefficient of friction between the track pin and the pin sleeve.

(2) Friction resistance at the roller of the steel crawler chassis. This resistance is related to the outer diameter of the roller, the diameter of the roller, the weight transmitted by the roller to the track shoe, and the coefficient of friction between the roller shafts.

(3) Friction resistance at the guide wheel. This resistance is related to the coefficient of friction between the guide wheel and the bearing, the diameter of the guide wheel shaft and the diameter of the guide wheel raceway.

(4) Friction resistance at the driving wheel of the steel crawler chassis. This resistance is related to the friction coefficient of the driving wheel bearing, the diameter of the driving wheel axle, the diameter of the driving wheel pitch circle, and the tight edge tension of the track.

(5) Friction resistance on the steel crawler chassis supporting sprocket or supporting sprocket plate. This resistance is mainly related to the weight, contact area and friction coefficient of the track shoe supported by the carrying sprocket or chain shoe. Therefore, in the selection and assembly of rotary drilling rig chassis with locking rod, the internal resistance coefficient should be reduced as much as possible, and the frictional resistance caused by unreasonable ratio should be solved from the source, so thatSteel crawler chassisPerformance to achieve good working condition.

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