Causes of friction between arm pin and joint of single beam and improvement measures
Posted: Dec 10th, '24, 01:22
Phenomenon: When telescopic boom, if the engine throttle exceeds 2000r\\u002Fmin, the telescopic boom will have abnormal sound, and the boom will have a certain degree of vibration; Reduce engine throttle to below 1800r\\u002Fmin, sound normal. For the boom type crane, its rated lifting weight changes with the amplitude, and its lifting characteristics are characterized by lifting torque. The value indicated on the sign is the larger lifting weight. The double beam crane mainly includes lifting mechanism, operating mechanism, amplitude changing mechanism, rotating mechanism and metal structure. Lifting mechanism is the basic working mechanism of the crane, mostly composed of hanging system and winch, but also through the hydraulic system lifting heavy objects. The crane to turn the boom is composed of a driving device and a slewing support device. The metal structure is the skeleton of the crane, the main bearing parts such as bridge, boom and gantry can be box structure or truss structure, can also be web structure, and some can be used as supporting steel beams.
The main causes of friction between the arm pin and the arm joint of a single beam are analyzed:
1. Expansion of the arm pin and arm: the pressure of the control cylinder is not less than 8MPa under the unlocked state
2. Core tube cavity
The cylinder extends and the core tube container becomes larger. The velocity of the body cavity increases with the velocity of the telescopic cylinder. If the filling flow rate is insufficient, the pressure in the cavity is reduced and the arm pin is released.
Fault improvement measures:
After the pressure of the reducing valve rises, the valve port becomes smaller, resulting in insufficient flow. Therefore, adjust the spring of the pressure reducing valve to ensure adequate pressure and flow.
Sum up
(1) There are some problems in the detection process of the signal of the control management system, which also needs to be considered comprehensively from the mechanical parts, hydraulic parts, and institutional parts, which shows that the new technology is mechanical, electrical and hydraulic, and the people's service enterprise personnel can continue to develop more professional research directions, relying on the traditional professional service center work, it is quite difficult.
The control of the arm pin should be considered in conjunction with the whole process, and the pressure adjustment of the pressure reducing valve may cause changes in the flow rate. The adjustment of parts should pay attention to the degree, the service process should grasp the good degree, and avoid solving the problem and bringing new problems.
(3) The reliability of the product is related to the manufacturing accuracy, assembly process and working environment of the structural parts. It is necessary to provide design elements for the development of design resources, and put forward standard requirements for manufacturing and assembly links to fundamentally improve the reliability of products.
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The main causes of friction between the arm pin and the arm joint of a single beam are analyzed:
1. Expansion of the arm pin and arm: the pressure of the control cylinder is not less than 8MPa under the unlocked state
2. Core tube cavity
The cylinder extends and the core tube container becomes larger. The velocity of the body cavity increases with the velocity of the telescopic cylinder. If the filling flow rate is insufficient, the pressure in the cavity is reduced and the arm pin is released.
Fault improvement measures:
After the pressure of the reducing valve rises, the valve port becomes smaller, resulting in insufficient flow. Therefore, adjust the spring of the pressure reducing valve to ensure adequate pressure and flow.
Sum up
(1) There are some problems in the detection process of the signal of the control management system, which also needs to be considered comprehensively from the mechanical parts, hydraulic parts, and institutional parts, which shows that the new technology is mechanical, electrical and hydraulic, and the people's service enterprise personnel can continue to develop more professional research directions, relying on the traditional professional service center work, it is quite difficult.
The control of the arm pin should be considered in conjunction with the whole process, and the pressure adjustment of the pressure reducing valve may cause changes in the flow rate. The adjustment of parts should pay attention to the degree, the service process should grasp the good degree, and avoid solving the problem and bringing new problems.
(3) The reliability of the product is related to the manufacturing accuracy, assembly process and working environment of the structural parts. It is necessary to provide design elements for the development of design resources, and put forward standard requirements for manufacturing and assembly links to fundamentally improve the reliability of products.
Choose DIG-DOG for high-quality, customizable brush cutters for skid steers with fast delivery. Contact us today to discover how our superior products can enhance your land management tasks!
for more info just visit our website at www.dig-dog.com
contact # : +86 158 6218 2088
email : sales@bonovogroup.com