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Hydraulically-controlled unidirectional-filtration maintenance-free lifting oil cylinder

A hydraulically controlled one-way lifting cylinder technology, which is applied in the field of lifting cylinders, can solve problems such as unreasonable filtration methods, and achieve the effects of increasing service life, reducing maintenance costs, and improving cleanliness

Inactive Publication Date: 2020-05-19
ZHEJIANG KELI VEHICLE CONTROL SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the shortcomings of unreasonable filtering methods in the prior art, the present invention provides a maintenance-free lifting cylinder with hydraulic control and one-way filtering

Method used

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  • Hydraulically-controlled unidirectional-filtration maintenance-free lifting oil cylinder
  • Hydraulically-controlled unidirectional-filtration maintenance-free lifting oil cylinder
  • Hydraulically-controlled unidirectional-filtration maintenance-free lifting oil cylinder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A hydraulic control one-way filter maintenance-free lifting cylinder, as shown in the figure, includes a cylinder body 1, a piston 2 is installed in the cylinder body 1, the piston 2 divides the oil pump body 1 into an upper chamber 101 and a lower chamber 102, and the piston 2 is installed with a piston rod, which extends out of the cylinder body 1 and connects with the driver's cab, thereby pushing the driver's cab to move up and down, and also includes a descending oil circuit 3 and a lifting oil circuit that communicate with the upper chamber 101 and the lower chamber 102 respectively 4. The upper chamber 101 and the lower chamber 102 enter and discharge liquid through the descending oil passage 3 and the descending oil passage 4 respectively, and the descending oil passage 3 and the lifting oil passage 4 are respectively installed with a descending filter 31 and a lifting filter 41 .

[0022] It also includes a descending check valve 32 installed on the descending ...

Embodiment 2

[0028] Same as Embodiment 1, the difference is that it also includes a one-way lock valve 5 of the oil cylinder, the lifting oil circuit 4 communicates with the lower chamber 102 through the one-way lock valve 5 of the fuel tank, and a one-way The ball core 51 and the one-way ball core 51 one-way control the lifting oil passage 4 to supply oil to the lower chamber 102. When the oil enters the lower chamber 102 through the lifting oil passage 4, the oil passes through the lifting filter 41 and the The fuel tank one-way lock valve 5 enters the lower cavity 102 .

[0029] The oil tank one-way lock valve 5 includes a one-way ball core 51, the one-way ball core 51 is connected with a spring 511, and one end of the one-way ball core 51 equipped with the spring 511 is set toward the port of the oil in and out of the lower cavity 102, and is installed in the lift. At the end of the process, the one-way ball core 51 prevents the oil in the lower chamber 102 from being pressed down by t...

Embodiment 3

[0034] Same as Embodiment 1, the difference is that both the descending filter 31 and the lifting filter 41 include a filter cartridge 6 and an impurity filter layer 61 installed in the filter cartridge 6, and a magnetic filter layer 62 is also installed in the filter cartridge 6, The magnetic filter layer 62 can effectively filter metal particles in the oil. The filter cartridge 61 includes an upper cylinder body 601 with an open lower end and a lower cylinder body 602 with an upper end opening. The upper cylinder body 601 and the lower cylinder body 602 are connected through the screw fit of their respective opening ends. , the lower opening of the upper cylinder 601 is equipped with an upper body 63, the side wall of the upper cylinder 601 is provided with upper grooves 6011 distributed in a circle, and the upper body 63 is provided with an upper protrusion 631 matching with the groove 6011, The magnetic filter layer 62 is stored in the upper cylinder 6011 through the upper ...

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Abstract

The invention relates to the technical field of lifting oil cylinders, and discloses a hydraulically-controlled unidirectional-filtration maintenance-free lifting oil cylinder. The hydraulically-controlled unidirectional-filtration maintenance-free lifting oil cylinder comprises an oil cylinder body (1) and a piston (2), and further comprises a lowering oil path (3) and a lifting oil path (4) which correspondingly communicate with an upper cavity (101) and a lower cavity (102); and a lowering filter (31) and a lifting filter (41) are correspondingly mounted on the lowering oil path (3) and thelifting oil path (4). Whether in the lifting or lowering process, it can be ensured that clean oil which is filtered through the oil paths serves as hydraulic oil which enters the oil cylinder, so that impurities which are mixed into the cavities during the initial product mounting process and metal powder which remains after the processing of a metal component can be discharged together, and theinternal cleanliness of the cavities in the oil cylinder can be further improved; accordingly, the internal sealing reliability and locking reliability of the oil cylinder can be ensured, and the product service life can be greatly prolonged; and meanwhile, the maintenance cost can be reduced and the environmental pollution caused by system leakage can be reduced.

Description

technical field [0001] The invention relates to the technical field of lifting cylinders, in particular to a hydraulically controlled one-way filtering maintenance-free lifting cylinder. Background technique [0002] With the development of science and technology and the national economy, the logistics and transportation industry has also shown a leap forward, and the sales of commercial vehicles (except passenger cars) as the basic carrier of the logistics and transportation industry have continued to grow steadily, from 3.108 million in 2016, Then to 3.633 million in 2017, and then to 3.886 million in 2018, it has maintained a good momentum of development. In addition, as of 2018, the number of domestic commercial vehicles (except passenger cars) has reached 25.7 million, and 90% of the cabs of these commercial vehicles use a hydraulic lifting system to lift and flip the cab to realize the chassis engine, Overhaul and maintenance of large parts such as gearboxes. However...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B15/14F15B15/20F15B21/041
CPCF15B15/1447F15B15/202F15B21/041
Inventor 邵金龙陈兵胡正中刘先镇周根明黄书君吴卓泉
Owner ZHEJIANG KELI VEHICLE CONTROL SYST