The installation structure of the guide sleeve of the driving cylinder, the driving cylinder and the key
A technology of installation structure and guide sleeve, applied in the direction of fluid pressure actuating device, etc., can solve the problems of easy fatigue failure of the keyway on the cylinder, poor stress condition, and stress concentration of the keyway, etc. The effect of stress concentration
Active Publication Date: 2015-11-18
HUNAN TELI HYDRAULIC
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Problems solved by technology
However, because the cross-sections of the existing keys are all rectangular, the keyway on the cylinder used to assemble the key is prone to stress concentration and poor stress conditions, which leads to fatigue damage to the keyway on the cylinder
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[0034] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.
[0035] In the present invention, unless otherwise stated, the used orientation words such as "inner and outer" are usually defined when the driving cylinder provided by the present invention is in normal operation. Taking the cylinder as an example, where the guide sleeve is located One side is the inner side and the other side is the outer side. Similarly, taking the gland as an example, the side where the guide sleeve is located is the inner side, and the other side is the outer side. It should be noted that these orientation words are only used to illustrate the present invention, and are not used to limit the present invention.
[0036] Such as Figures 1...
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The invention discloses a guide sleeve mounting structure of a driving cylinder. The guide sleeve mounting structure comprises a cylinder barrel (1) and a guide sleeve (2) which is hermetically arranged on the end of the cylinder barrel; a blocking key (3) is arranged between the cylinder barrel and the guide sleeve; a key slot (11) for containing the blocking key is arranged in the cylinder barrel, wherein the key slot is an arc slot; and a plurality of arc protrusions (31) contained in the key slot in a way of being matched with the key slot in shape are arranged on the blocking key along a radial direction. The invention also provides a driving cylinder with the guide sleeve mounting structure and a blocking key; a plurality of arc protrusions arranged in an axial direction are arranged on the blocking key; the section areas of the arc protrusions are gradually reduced towards the outside along the radial direction. With the adoption of the arc protrusions formed on the blocking key of the guide sleeve mounting structure in the radial direction, the stress of the key slot matched with the blocking key in shapes can be reasonable, and the stress concentration is unlikely to occur, so that the guide sleeve mounting structure cannot be damaged and is longer in service life, in addition, the service life of the driving cylinder is prolonged.
Description
technical field [0001] The invention relates to the field of guide sleeve installation of a drive cylinder, in particular to a guide sleeve installation structure of a drive cylinder, a drive cylinder using the guide sleeve installation structure and a key used in the guide sleeve installation structure. Background technique [0002] Drive cylinders (hydraulic cylinders, pneumatic cylinders) are widely used in various fields to drive various mechanical operations through the telescopic movement of the piston rod. Wherein, in order to guide the piston rod, a guide sleeve is usually installed at the end of the cylinder barrel of the drive cylinder, and the piston rod passes through the center of the guide sleeve to guide the piston rod. Wherein, the guide sleeve needs to bear the axial load and radial load brought by the piston rod and the internal working medium (such as hydraulic oil). The radial load mainly from the piston rod can be transmitted to the cylinder through the...
Claims
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IPC IPC(8): F15B15/20
Inventor 唐刚明
Owner HUNAN TELI HYDRAULIC