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Energy-saving gap sealing type hydraulic cylinder and detection equipment applying same

A sealed, energy-saving technology, applied in the field of hydraulic cylinders, can solve the problems of increased energy consumption of hydraulic pumping stations, expansion and deformation of cylinder side walls, and reduced pressure difference of pistons, so as to reduce hydraulic leakage, reduce expansion deformation, The effect of reducing the gap

Active Publication Date: 2022-04-12
绍兴市肯特机械电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above-mentioned related technologies, the inventor believes that for monitoring equipment such as force standard machines and material testing machines, the force output of the hydraulic cylinder may reach the meganewton level, and the hydraulic pressure is large, which is easy to cause expansion and deformation of the cylinder side wall, etc., so that The gap between the piston and the inner wall of the cylinder expands to cause liquid leakage, and the liquid leakage will reduce the pressure difference on both sides of the piston, so there is a defect that it is easy to leak liquid and increase the energy consumption of the hydraulic pump station

Method used

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  • Energy-saving gap sealing type hydraulic cylinder and detection equipment applying same
  • Energy-saving gap sealing type hydraulic cylinder and detection equipment applying same
  • Energy-saving gap sealing type hydraulic cylinder and detection equipment applying same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Embodiment 1 of the present application discloses an energy-saving gap-sealed hydraulic cylinder. refer to figure 1 The energy-saving gap-sealed hydraulic cylinder includes a cylinder 1, a cylinder head 3, a piston 2 and a piston rod 4. A bushing 5 is coaxially distributed inside the cylinder 1, and an annular cavity 51 is formed between the cylinder 1 and the bushing 5. , the bushing 5 is provided with a balanced pressure structure, the balanced pressure structure is used to increase the inner pressure of the annular chamber 51 and make it close to the hydraulic pressure in the bushing 5, so as to reduce the deformation of the bushing 5, so that the piston 2 can be connected with the bushing 5. The inner wall is closely matched to reduce the gap, so as to reduce the pressure difference between the two sides of the piston 2 caused by liquid leakage, and play an energy-saving role.

[0047] The cylinder barrel 1 is cylindrical, and the cylinder head 3 is circular. The cyl...

Embodiment 2

[0054] Embodiment 2 of the present application discloses an energy-saving gap-sealed hydraulic cylinder, referring to figure 2 , image 3 , the difference from Embodiment 1 is that this embodiment adopts a two-way hydraulic cylinder, the bottom end of the cylinder barrel 1 and the cylinder head 3 are provided with passages for the liquid to enter and exit, and the diameter of the piston 2 is greater than the diameter of the piston rod 4, so that the lining A chamber for liquid circulation is formed between the sleeve 5 and the piston rod 4 , and the expansion and contraction of the piston rod 4 can be realized by adjusting the hydraulic pressure of the liquid on both sides of the piston 2 .

[0055] There is a circular balance chamber 21 inside the piston 2. The central axis of the balance chamber 21 coincides with the central axis of the piston 2. There are multiple balance chambers 21 arranged axially along the piston 2. Between the multiple balance chambers 21 There is a ...

Embodiment 3

[0060] Embodiment 3 of the present application discloses a testing device, which includes a machine body on which the above-mentioned energy-saving gap-sealed hydraulic cylinder is installed. The testing equipment includes a hydraulic press, a force standard machine, etc., and is used to measure parameters such as product pressure resistance, quality, and torque. .

[0061] The implementation principle of Embodiment 3 of the present application is: the force input / output of the above-mentioned hydraulic cylinder is more accurate than that of rubber-sealed hydraulic cylinders and ordinary gap-sealed hydraulic cylinders, so as to improve the detection accuracy of the detection equipment and reduce the detection equipment. energy consumption.

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Abstract

The hydraulic cylinder comprises a cylinder barrel, a cylinder cover, a piston and a piston rod, the cylinder cover covers an opening of the cylinder barrel, a sliding opening is formed in the cylinder cover, the piston rod is connected with the piston, and one end of the piston rod penetrates through the sliding opening and extends out of the cylinder barrel; a lining is coaxially distributed in the cylinder barrel, the piston is arranged in the lining in a sliding mode, one end of the lining is connected with the inner bottom wall of the cylinder barrel in a sealed mode, the other end of the lining is connected with the cylinder cover in a sealed mode, an annular cavity is formed between the peripheral wall of the lining and the inner wall of the cylinder barrel, and a pressure balancing structure used for increasing the inner pressure of the annular cavity is arranged on the lining. The hydraulic cylinder has the effects of reducing gaps in positions such as the cylinder cover and the piston of the hydraulic cylinder, reducing liquid leakage and reducing energy consumption.

Description

technical field [0001] The application relates to the field of hydraulic cylinders, in particular to an energy-saving gap-sealed hydraulic cylinder and detection equipment using the same. Background technique [0002] A hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion). When it is used to realize reciprocating motion, the deceleration device can be eliminated, and the motion is stable, so it is widely used. [0003] At present, a hydraulic cylinder is basically composed of a cylinder barrel and a cylinder head, a piston and a piston rod, and a sealing device. The piston can slide in the cylinder barrel, and the cylinder head is used to limit the piston and enhance the sealing of the cylinder barrel Reduce leakage. The piston rod is connected with the piston, and one end thereof extends out of the cylinder barrel. When in use, the hydraulic pump station pumps high-pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B15/14F15B15/20
Inventor 杨哲芦王鹏李海根王钢强赵海军郑伟峰姜宝钧李思源
Owner 绍兴市肯特机械电子有限公司
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