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Hydraulic control system of medical bed, medical bed and control method

A technology of a hydraulic control system and a medical bed, which is applied in the field of the hydraulic control system of the medical bed and can solve the problems such as the inability to synchronize the displacement of the hydraulic cylinder.

Pending Publication Date: 2021-10-15
NANJING MINDRAY BIO MEDICAL ELECTRONICS
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Problems solved by technology

[0003] In view of this, the embodiment of the present application expects to provide a hydraulic control system for a medical bed, a medical bed and a control method to solve the problem in the related art that the displacement of the hydraulic cylinders cannot be synchronized during the long-term use of the hydraulic cylinders in series. question

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  • Hydraulic control system of medical bed, medical bed and control method
  • Hydraulic control system of medical bed, medical bed and control method
  • Hydraulic control system of medical bed, medical bed and control method

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Embodiment Construction

[0023] It should be noted that, in the case of no conflict, the embodiments in the application and the technical features in the embodiments can be combined with each other. Undue Limitation of This Application.

[0024] An embodiment of the present application provides a hydraulic control system for a medical bed, please refer to Figure 1 to Figure 4 , the hydraulic control system includes: a hydraulic oil tank 10 , a hydraulic circuit 20 , a sensor 30 , and a controller 40 .

[0025] see figure 1 and figure 2 , the number of hydraulic circuits 20 is at least two, and each hydraulic circuit 20 includes a hydraulic oil pump 21, a hydraulic cylinder 22, a reversing valve group 23, an oil inlet circuit 24, an oil return circuit 25, a first working oil circuit 26 and a second Working oil circuit 27. The oil inlet passage 24 communicates with the oil outlet P of the hydraulic oil pump 21 and the oil inlet P1 of the reversing valve group 23, the oil return passage 25 communic...

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Abstract

The embodiment of the invention provides a hydraulic control system of a medical bed, the medical bed and a control method. The hydraulic control system comprises a hydraulic oil tank, at least two hydraulic loops, sensors and a controller, wherein each hydraulic loop comprises a hydraulic oil pump, a hydraulic oil cylinder, a reversing valve group, an oil inlet path, an oil return path, a first working oil path and a second working oil path; the oil inlet path communicates with an oil outlet of the hydraulic oil pump and an oil inlet of the reversing valve group, the oil return path communicates with an oil outlet of the reversing valve group and the hydraulic oil tank, the first working oil path communicates with a first working opening of the reversing valve group and a rodless cavity of the hydraulic oil cylinder, and the second working oil path communicates with a second working opening of the reversing valve group and a rod cavity of the hydraulic oil cylinder; the sensors output displacement signals of the corresponding hydraulic oil cylinders; and the controller analyzes the displacement signals and adjusts the flow of the hydraulic oil cylinders to be adjusted according to an analysis result.

Description

technical field [0001] The present application relates to the technical field of medical devices, in particular to a hydraulic control system of a medical bed, a medical bed and a control method. Background technique [0002] In related technologies, there is a hydraulic medical bed that relies on two series-connected hydraulic cylinders to drive the split-leg left and right leg boards to realize synchronous lifting. However, in this solution, due to the compressibility of the hydraulic oil itself, And the hydraulic cylinder will have a small leak, so in the long-term use process, the lifting height of the left leg board and the right leg board will not be synchronized, especially when it is necessary to separate the left leg board and the right leg board When replacing the integral leg board, it is not only inconvenient to operate, but also causes the risk of bending the replaced integral leg board. Contents of the invention [0003] In view of this, the embodiment of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B11/17F15B11/22F15B13/08F15B13/01A61G7/05
CPCF15B11/17F15B11/22F15B13/0803F15B13/086F15B13/01A61G7/05F15B2211/6336F15B2211/30525F15B2211/40576F15B2211/6333F15B2211/6656
Inventor 陈达徐庆
Owner NANJING MINDRAY BIO MEDICAL ELECTRONICS
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