This article mainly introduces:

Denmark hydraulic cylinder,unidirectional cylinder manufacturer,unidirectional cylinder

(Denmark unidirectional cylinder,produced by Hengyu Hydraulic Cylinder Factory）

unidirectional cylinder are widely used in Denmark，because of high work efficiency，clever hydraulic energy conversion，simple structure and reliable operation.So our company has designed unidirectional cylinder for customers from Denmark.

Introduction to unidirectional cylinder:

The main role of the unidirectional cylinder: the unidirectional cylinder is an executive element in the hydraulic transmission system, which is an energy conversion device that converts hydraulic energy into mechanical energy. The hydraulic motor realizes continuous rotary motion, while the unidirectional cylinder realizes reciprocating motion. The structure of the unidirectional cylinder has three categories: piston unidirectional cylinder, plunger unidirectional cylinder, swing unidirectional cylinder, piston unidirectional cylinder and plunger unidirectional cylinder to achieve reciprocating linear motion, output speed and thrust, swing unidirectional cylinder to achieve reciprocating swing, output angular speed (speed) and torque. In addition to the single use of the unidirectional cylinder, two or more can be combined or used in combination with other mechanisms. To fulfill a special function. The unidirectional cylinder has simple structure and reliable operation, and has been widely used in the hydraulic system of machine tools.

The unidirectional 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 unidirectional cylinder, bite. Elimination method: When installing the unidirectional cylinder, ensure that the axis position of the unidirectional cylinder is consistent with the direction of movement; Make the load borne by the unidirectional cylinder as far as possible through the unidirectional cylinder axis, to avoid the phenomenon of eccentricity.

unidirectional cylinder head explanation: low pressure castings, medium and low pressure with HT300 gray iron, medium and high pressure with 35, 45 steel. When the unidirectional cylinder head itself is the guide sleeve of the piston rod, the unidirectional cylinder head is best cast iron. At the same time, brass, bronze or other wear-resistant materials should be fused on the guide surface. If the guide sleeve is pressed into the unidirectional cylinder head, the guide sleeve shall be wear-resistant cast iron, bronze or brass.

If the unidirectional cylinder is sliding or crawling (stop and go), check whether there is any astringency inside the unidirectional cylinder. The internal parts of the unidirectional cylinder are improperly assembled, the parts are deformed, worn or the shape and position tolerance is excessive, and the action resistance is too large, so that the piston speed of the unidirectional cylinder changes with the different stroke position, and there is slip or crawl. Most of the reasons are due to poor assembly quality of parts, surface scars or sintered iron filings, so that the resistance increases, the speed decreases. For example, the piston is different from the piston rod or the piston rod is bent, the unidirectional cylinder or the piston rod is offset from the mounting position of the guide rail, and the sealing ring is too tight or too loose. The solution is to repair or adjust, replace damaged parts and remove iron filings. At the same time, check whether the lubrication is good or whether the unidirectional cylinder bore processing is out of whack. Because the piston and unidirectional cylinder, guide rail and piston rod are relative If the unidirectional cylinder is crawling seriously, check whether air has entered the hydraulic system. Air compression or expansion can cause the piston to slip or crawl. The exclusion measures are to check the hydraulic pump, set up a special exhaust device, and quickly operate the exhaust several times in the full stroke. Check the seals at the same time, because the quality of the seals is directly related to slippage or crawling. When the O-ring is used under low pressure, compared with the U-ring, it is easy to slip or crawl because of the higher surface pressure and the larger difference between static and static friction resistance. The surface pressure of the U-shaped sealing ring increases with the increase of pressure, although the sealing effect is correspondingly improved, but the difference between static and static friction resistance is also larger, the internal pressure increases, affecting the rubber elasticity, due to the increase in the contact resistance of the lip, the sealing ring will tip over and the lip elongation, and it is also easy to cause slip or crawling unidirectional cylinder weight composition and calculation. The weight of the unidirectional cylinder is composed of the unidirectional cylinder diameter, the outer diameter and weight of the unidirectional cylinder, the rod diameter, and the weight of the accessories, so in calculation, it is to add all these together to get the specific value. However, if there are special circumstances, it may be calculated separately. This work can be carried out by yourself, but it can also be carried out by professionals, so that mistakes can be avoided.

Answers to some questions about unidirectional cylinder:

Design a hydraulic cylinder, the inner diameter of the cylinder is 100mm, what size of piston rod is best used?
This involves how much speed ratio you need, that is, the area ratio of the rod cavity and the rodless cavity, if the weight is relatively large, it is recommended that the speed ratio choose 2, that is, the piston rod diameter choose 70mm, under normal circumstances, the speed ratio choose 1.46, the piston rod diameter choose 55mm. Of course, there are many factors that affect the diameter of the piston rod, such as stroke, stroke is too long, in order to stabilize the work of the hydraulic cylinder, its diameter also needs to choose a relatively large, sometimes even non-standard products, need to choose according to the actual situation.

What is the function of the forklift truck cylinder and how does it work?
(1) In order to quickly and conveniently pick up the goods, the gantry needs to be tilted forward; In order to prevent the goods from falling, the door frame should be tilted backward to ensure the stability of the goods. The front and back tilt of the frame is accomplished by tilting the oil cylinder. (2) The inclined cylinder is composed of a piston, a cylinder block, a piston rod, an upper cover, a lower cover, a compression nut and a cover female and other main parts. (3) The inclined cylinder has two oil holes that can be interchanged into oil inlet and discharge holes. The cylinder is divided into a front cavity and a back cavity by a piston. The back cavity is filled with high-pressure oil when it tilts forward, and the front cavity is filled with high-pressure oil when it tilts backward.