This article mainly introduces:

Cameroon hydraulic cylinder,large stroke cylinder manufacturer,large stroke cylinder

(Cameroon large stroke cylinder,produced by Hebei Hengyu company）

large stroke cylinder are widely used in Cameroon，because of simple structure and reliable operation，excellent temperature resistance，no transmission clearance.So our company has designed large stroke cylinder for customers from Cameroon.

Introduction to large stroke cylinder:

Do not regularly check the damage of the chrome layer of the large stroke cylinder: completely extend the large stroke cylinder and carefully check whether there is any surface damage such as injury, strain, welding slag, such as the surface damage position, in the large stroke cylinder block < 20cm, and the damage depth < 5mm, should be repaired in time to prevent long-term damage to the large stroke cylinder seal. Welding slag is strictly prohibited on the surface of the large stroke cylinder.

The large stroke cylinder should be used as far as possible to avoid the transverse force, sometimes the piston rod to bear the transverse load is too large, especially do not force or pull the large stroke cylinder, bite. Elimination method: When installing the large stroke cylinder, ensure that the axis position of the large stroke cylinder is consistent with the direction of movement; Make the load borne by the large stroke cylinder as far as possible through the large stroke cylinder axis, to avoid the phenomenon of eccentricity.

large stroke cylinder piston rod material selection and technical requirements: (I), because there is no special requirements, so use 45 steel as the piston rod material, the design of the piston rod only withstand pressure stress, so no modulation processing; (ii) The coaxial tolerance of the shaft journal and the outer circle of the mounting piston is not greater than 0.01mm, so as to ensure the coaxial degree of the outer circle of the piston rod and the outer circle of the piston, and avoid the stuck phenomenon of the piston and the large stroke cylinder, the piston rod and the guide. The vertical tolerance between the end face of the mounting piston and the axis of the piston rod is not more than 0.04mm/100mm to ensure that the piston installation does not produce skew; (iii) The outer circle of the piston rod should pay attention to the roughness; (iv) Because it is operated under low load conditions, surface treatment is omitted.

The large stroke cylinder is mainly composed of body, piston, piston rod, large stroke cylinder head, large stroke cylinder bottom, piston rod head and related auxiliary devices. The piston divides the large stroke cylinder into two chambers, and moves reciprocally in the large stroke cylinder with the help of pressure oil. In order to improve its working effect, there is no sealing ring on the piston to eliminate internal leakage, where the piston rod passes through the large stroke cylinder head, due to the existence of the gap, it is easy to produce external leakage phenomenon, and the dust can enter the large stroke cylinder through the gap, so the sealing device and dust prevention reason are set. At the same time, in order to eliminate the influence of eccentric load on the work of the piston, all the large stroke cylinders must be provided with a considerable length of guide sleeve at the extended end of the piston rod. In addition, in the case of faster piston movement, the phenomenon of mechanical collision between the piston and the large stroke cylinder bottom and the large stroke cylinder head is serious, so the buffer deceleration should be set at both ends of the large stroke cylinder The working medium of the large stroke cylinder: because it works at room temperature, the ordinary oil-type hydraulic oil can be selected; large stroke cylinder sealing device: The use of Yx sealing ring, polyurethane (PU) and polytetrafluoroethylene (PTFE) materials combined to achieve a good sealing effect; Buffer mechanism of the large stroke cylinder: The buffer structure of the large stroke cylinder is to prevent the piston from colliding with the large stroke cylinder head at the end of the stroke.

Answers to some questions about large stroke cylinder:

Two cylinders have a reversing control, if the load of the two cylinders is not the same, how to ensure their synchronization?
The piston rod of the cylinder is required to extend synchronization: install A shunt collector valve or synchronous motor at port A of the direction control valve, and then connect the two outlets of the shunt collector valve to the rod-free cavity of the two cylinders respectively. It is required that the outlet of the diverter collector valve is connected to the rod cavity of the two cylinders respectively when the piston rod is withdrawn in synchronization. The synchronization performance depends on the quality of the diverter valve and the leakage of the hydraulic system.

How to make 4 cylinders balance lifting weight at the same time?
The cost of the synchronous valve is lower, 4 cylinders need 3 synchronous valves, to be precise you can use a synchronous motor, but it is more expensive. There is another way, that is to install a throttle valve in each cylinder, respectively adjust the speed of the cylinder.