Manual hydraulic truck, small model, large load, now has been widely used in logistics transportation and other industries, Manual forklift truck, also called hydraulic forklift truck, lifting jack, etc. The principle of this product is similar to the working principle of jack, which is operated by hydraulic pressure. It is pushed up by hydraulic cylinder and works according to pascal’s principle.
The principle
states that when any point in an incompressible stationary fluid is subjected to an external force, the pressure increment is transmitted instantaneously to all points of the stationary fluid. In the figure below, the force F1 applied to the small piston is instantly transferred to the large piston, and the force F2 produced by the large piston is S2/S1 times that of F1, where S2 and S1 are the areas of the large piston and the small piston, respectively. According to the principle of the production of lifting equipment (components) called hydraulic jack.
A lot of people in the use process, often encounter a lot of problems, but do not know what reason is caused.
Taizhou Kylinge Technology Co.,ltd. takes a look at the common faults and solutions of manual hydraulic trucks.
1. The hydraulic car can not press up?
Cause analysis, no hydraulic oil:,oil purity is not enough,The adjusting bolt is too close or the adjusting screw is too tight, so that the valve is always open, there is air in the hydraulic cylinder.
Solution: Refueling, Oil change, Exhaust air.
2. The fork can not descend?
Cause analysis,the anti – pressure valve is not adjusted, the piston rod position of the cylinder is offset, and the parts are damaged or damaged due to the offset load deformation
Solution: Adjust the anti – pressure valve, replace the piston rod or cylinder, repair or replace the relevant parts
3. Slow rising speed of cargo fork?
Cause analysis,there are impurities in the hydraulic oil, the relief width is not adjusted well, and there is air in the hydraulic oil solution, replace the clean hydraulic oil, adjust the relief valve, eliminate the air in the oil pump.
4. When there is no relief pressure, the cargo fork slides down?
Cause analysis: there is air in the hydraulic oil, there are impurities in the hydraulic oil, the anti-compression width is not adjusted well, and the seal is damaged.
Solution ways: Eliminate the air, replace the clean hydraulic oil, adjust the anti – compression width, replace the new seal.
5. Oil leakage from the moving truck?
Cause analysis: seal wear or damage, parts cracking or wear
Solution: Replace the seals with new ones and check the updated parts
6. The lifting weight is not up to standard?
Cause analysis: there are impurities in the hydraulic pressure, and the one-way valve can not be closed
Solution: Replace pure hydraulic fluid
7. Crawling without load?
Cause analysis: the door clamp deformation, cylinder sealing ring is too tight, so that the plunger rod resistance is too large
Solution: Adjust the door frame or adjust the roller shaft adjustable screw, adjust the cylinder upper nut
8. Slow lift?
Cause analysis: the hydraulic system severely leaks, the sealing ring aging or damage, the hydraulic system has air solutions: fastening oil discharge adjustable screw to replace the sealing ring, excluding air
The above is Kylinge Technology Co.,ltd.
introduced to you about the common faults and maintenance methods of manual hydraulic trucks, hoping to help you better understand the manual hydraulic trucks. Kylinge manual hydraulic truck, integral cast cylinder, rugged; High quality Baosteel steel plate, surface electrostatic spray; Imported seal ring, plated piston rod internal overflow valve to provide overload protection, effectively avoid overload use, reduce maintenance costs,also customized the extended fork and other special specifications.
Post time: Oct-09-2022