Piston rod for hydraulic cylinder of packer
A technology of piston rod and hydraulic cylinder, applied in the field of hydraulic cylinder, can solve the problems of increasing hydraulic oil temperature, increasing processing difficulty, increasing supporting pressure, etc., and achieving the effect of prolonging service life, saving materials and reducing weight
Inactive Publication Date: 2015-01-28
KUNSHAN XINJINFU PRECISION ELECTRONICS
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Problems solved by technology
Generally, the guide length and the diameter of the piston rod are increased, but this method not only increases the cost, but also increases the difficulty of processing. At the same time, the thicker piston rod will increase the weight, increase the support pressure of the hydraulic system, and generate heat when the piston moves. , causing the temperature of the hydraulic oil to rise, which has a great impact on the system
Method used
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Embodiment Construction
[0009] Attached below figure 1 The present invention will be further described.
[0010] As shown in the figure, the outer end head of the piston rod proposed by the present invention is connected with the pressure head of the baler, and a sealing device is also installed on the piston rod. In order to reduce costs, the piston rod is divided into three parts: plug 1, piston rod body 2 and piston head 4. The plug 1 has grooves and steps, which are convenient for welding with the piston rod body 2. The piston rod body 2 It is a seamless steel tube with a hollow structure; a sealing device is installed on the piston head 4 . In order to ensure the coaxiality of the piston head 4 and the piston rod body 2, a positioning ring 3 needs to be added as a process support to facilitate the welding of the piston head 4 and the piston rod body 2. After the welding is completed, the positioning ring 3 is removed.
[0011] The hollow structure is adopted, and the force condition of the pis...
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The invention provides a piston rod for a hydraulic cylinder of a packer. The piston rod comprises an end cap, a piston rod main body, a piston head and a sealing device, wherein the end cap is welded at one end of the piston rod main body; the piston rod main body serves as a steel pipe with a hollow structure; the piston head is connected with the piston rod main body through the sealing device. The piston rod for the hydraulic cylinder of the packer provided by the invention adopts the hollow structure, uses a force bearing point transfer method to improve the force bearing situation of the piston rod, and transfer most of the pressure subjected to the upper end of the piston rod to the lower end of the piston rod, so as to prolong the service life of the hydraulic cylinder, lower the stress of the piston rod, and solve the bending stability problem of the piston rod of the long-stroke hydraulic cylinder. Furthermore, the piston rod can save the material, lower the cost and lighten the weight.
Description
technical field [0001] The invention relates to the field of hydraulic cylinders, in particular to a hydraulic cylinder piston rod of a baler with an improved structure. Background technique [0002] The baler is used to compress the cut chemical fibers and then bundle them into fiber packages of certain size and weight for storage and transportation. The compaction of the chemical fiber is achieved by the pressure of the hydraulic cylinder. The hydraulic cylinder is the main component of the baler, and its manufacturing accuracy and processing difficulty are quite large, so the requirements for the design of the hydraulic cylinder are also quite high. [0003] The piston rod of the hydraulic cylinder of the baler currently used is generally solid. If the stroke is long, the piston rod will be stressed when it extends out of the hydraulic cylinder, and the stability of the piston rod will be poor, which will easily cause pressure instability, resulting in deformation of the...
Claims
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IPC IPC(8): F16J7/00F15B15/14
CPCF15B15/1457
Inventor 王火明
Owner KUNSHAN XINJINFU PRECISION ELECTRONICS