Pneumatic-hydraulic common type piston-plunger cascade actuation module and fluid transmission device
A fluid transmission device and pneumatic-hydraulic technology, applied in the field of hydraulic cylinders and cylinders, can solve the problems of high manufacturing cost, complex structure, inconvenient external pipeline layout, etc., achieve low cost and improve technical and economic indicators
Pending Publication Date: 2018-10-23
苏州辛得利机电科技有限公司 +1
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Problems solved by technology
[0007] (1) It has two front and rear cylinders and two front and rear piston-piston rods, with large axial dimension, complex and procrastinated structure, and large overall volume;
[0008] (2) It has a total of 4 chambers for the rear piston thrust action chamber, the rear piston tension action chamber, the front piston thrust action chamber and the front piston tension action chamber, and has corresponding 4 pipe joint thread adapter holes, not only The structure itself is complex, and the external pipeline layout is also very inconvenient, and accessories such as tee joints need to be added, the overall manufacturing cost is high, and installation and adjustment are time-consuming and laborious;
[0009] (3) Since the air pipe joint thread adapter hole of each actuating chamber is different from the oil pipe joint thread adapter hole standard, it cannot be universally adapted to the oil pipe joint, so it can only be used for pneumatic transmission and not for hydraulic pressure. transmission;
[0010] (4) The diameter of the piston rod is small and the rigidity is poor
Therefore, the threaded cylinder pipe joint thread adapter hole 5" is completely redundant and unnecessary, and the resulting functional redundancy, size increase and waste can be imagined;
[0019] (2) The single-acting single-piston cylinder not only has a small output force, but also must be equipped with a return spring 11" outside the piston rod 10", resulting in a small diameter of the piston rod and poor rigidity
This is a technical defect that is difficult to overcome for the small cylinder hydraulic cylinder with a small bore; especially for the miniature cylinder hydraulic cylinder with a small bore, it is almost a fatal technical defect;
[0020] (3) Actually, engineering figure 2 The technical essential requirement of the multi-cylinder pressure equalization linkage fluid transmission device shown is a multi-position pressure equalization linkage fluid transmission device, while the prior art provides a multi-cylinder pressure equalization linkage fluid transmission device, which results in functional redundancy. caused great waste;
However, this type of transmission is currently only capable of using multiple single-acting single-piston cylinders, and the reduction in radial size is limited by rigidity
and figure 1 The shown double-acting tandem cylinder, even if it could be designed as a single-acting figure 2 The shown multi-cylinder pressure equalization linkage fluid transmission device
Method used
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[0047] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0048] see image 3 A pneumatic-hydraulic universal piston-plunger series actuating module is shown, the basic components of the actuating module include an actuating element 1 and a through-hole interface element 2, and the actuating element 1 includes columns connected sequentially from front to back The plug 11, the middle rod 13 and the piston 15, the diameters of the piston 15 and the plunger 11 are larger than the diameter of the middle rod 11; the through-hole interface element 2 has at least a plunger hole 21 and a middle rod hole 22, and the plunger 11 passes through the plunger The sealing ring 12 and the plunger hole 21 are fitted in a sliding and sealing manner, and the middle rod 13 passes through the middle rod hole 22 and is in sliding and sealing cooperation with the middle rod sealing ring 14, so that...
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The invention discloses a pneumatic-hydraulic common type piston-plunger cascade actuation module and a fluid transmission device. Basic components of the actuation module comprise an actuation element and a through hole connector element, the actuation element comprises a plunger, a middle rod and a piston which are sequentially connected from front to back, the through hole connector element isat least provided with a plunger hole and a middle rod hole, the plunger is in sliding sealing fit with the plunger hole, the middle rod is in sliding sealing fit with the middle rod hole, and therefore a plunger actuation cavity is formed among the through hole connector element, the back portion of the plunger and the middle rod. The actuation module can be matched with a piston cylinder block to form a pneumatic cylinder or a hydraulic cylinder with complete functions, the piston hole can be formed in a fixed body of a related machine to achieve matched connection to form the fluid transmission device, multiple pieces can be jointly loaded on multi-position fixing bodies to form the modularization multi-position constant-pressure linkage fluid transmission device, and the requirement ofthe modern manufacturing industry for greenization, modularization, personalized customization and the like of fluid transmission elements can be better met.
Description
technical field [0001] The invention relates to the field of cylinders and hydraulic cylinders, and mainly relates to a pneumatic and hydraulic universal piston-plunger serial actuation module and a fluid transmission device. Background technique [0002] Cylinders and hydraulic cylinders are widely used actuators in the field of fluid transmission. In order to reduce the radial size of air cylinders and hydraulic cylinders, especially cylinders, people choose to use tandem cylinders (commonly known as power cylinders), because the use of two-stage tandem cylinders can reduce the cylinder diameter by about 40%, and multi-stage tandem cylinders can reduce the cylinder diameter. Zoom out more. [0003] attached figure 1 It is the structural schematic diagram of the existing double-cylinder double-piston double-acting two-stage serial cylinder. As can be seen from the figure, the rear piston rod 5' is fixedly connected with the front piston 10'. Its working principle is: ...
Claims
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IPC IPC(8): F15B15/14F15B13/04F15B11/16
CPCF15B11/16F15B13/021F15B13/0401F15B15/14F15B15/1404F15B15/149
Inventor钟康民李艳魏山虎窦云霞
Owner苏州辛得利机电科技有限公司