Linear control device for shield machine
A technology of linear control and control device, which is used in mining equipment, earth-moving drilling, tunnels, etc., can solve the problems of inaccurate flow adjustment, inability to accurately control the flow, and the change of the throttle opening is not linear enough. Throttling control, the effect of improving linearity
Active Publication Date: 2018-08-17
CHINA RAILWAY TUNNEL GROUP CO LTD +1
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Problems solved by technology
In order to provide media for each flow path, in the existing technology, a flow control device with one inlet and multiple outlets is usually used, and through the adjustment of this flow control device, the flow provided for each flow path is the same, which cannot meet the requirements To meet the needs of different flows in different flow channels, it is impossible to realize the precise control of the flow of each flow channel; in order to provide different flows for different flow channels, in the prior art, a separate flow control device is usually used in each flow channel, but this method is Will cause the flow adjustment device to be too complicated
Moreover, the change of the opening degree of the orifice of the existing flow control device is not linear enough, and the flow adjustment is not accurate enough.
Method used
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[0016] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute conflicts with each other.
[0017] A linear control device for a shield machine, the control device includes a device main body 1, a seat body 2 is provided on the right side of the device body 1, a control port 3 is provided on the seat body 2, and a control port 3 is provided in the middle of the seat body 2 There is a medium inlet 4, and the upper and lower sides of the device main body 1 are respectively provided with a...
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A linear control device for a shield machine comprises a device main body. The right side of the device main body is provided with a seat body. The seat body is provided with control openings, and a medium inlet is formed in the middle of the seat body. A first outlet and a second outlet are formed in the two sides of the device main body correspondingly. The medium inlet communicates with the first outlet and the second outlet through the control openings. A cylindrical cavity is formed in the device main body and internally provided with a plunger slidably matched with the device main body.A plurality of channels are formed in the plunger. The left side of the device main body is provided with a plurality of flow control devices. The flow control devices are used for controlling the medium flow of all the channels. The end of the right side of the plunger is provided with a matching part. The axial section of the matching part is in a parabola shape. The matching part and a throttling opening in the plunger can be matched to form seal. The middle channel is internally provided with a throttling element. The flow adjusting device is compact in structure and precise in adjustmentand can realize linear throttling and be used for mechanical hydraulic systems such as the shield machine.
Description
technical field [0001] The invention relates to a control device, more specifically to a linear control device for a shield machine. Background technique [0002] The control device is an important component in the hydraulic system of the shield machine, which is used to control the flow of each flow path in the hydraulic system of the shield machine. In order to provide media for each flow path, in the existing technology, a flow control device with one inlet and multiple outlets is usually used, and through the adjustment of this flow control device, the flow provided for each flow path is the same, which cannot meet the requirements To meet the needs of different flows in different flow channels, it is impossible to realize the precise control of the flow of each flow channel; in order to provide different flows for different flow channels, in the prior art, a separate flow control device is usually used in each flow channel, but this method is It will cause the flow adj...
Claims
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IPC IPC(8): E21D9/093
CPCE21D9/093
Inventor 陈馈洪开荣孙振川周建军李凤远张兵韩伟锋吕乾乾李宏波许华国高会中王连山
Owner CHINA RAILWAY TUNNEL GROUP CO LTD