Hydraulic drive device and method for axial movement of super-expansion section of wind tunnel
A driving device and axial movement technology, which is applied in the direction of hoisting device, measuring device, hoisting device, etc., can solve the problems of difficult installation and fixation of hydraulic cylinders, large hydraulic cylinder size, high cost, etc., and meet the requirements of guaranteed moving distance, hydraulic pressure The cylinder size is too large to reduce the effect of reducing difficulty
Inactive Publication Date: 2017-03-01
BEIJING AEROSPACE YISEN WIND TUNNEL ENG TECH
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Problems solved by technology
In order to meet the requirements of the super-expansion section of the wind tunnel, a single hydraulic cylinder is usually used to drive. Due to the large stroke, the size of the hydraulic cylinder is large, the cost of ordering is relatively high, and it is relatively difficult to install and fix large-sized hydraulic cylinders.
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[0012] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0013] see figure 1 , the embodiment of the present invention provides a hydraulic drive device for the axial movement of the super-expansion section of the wind tunnel, which includes: the head hydraulic cylinder 11, the middle hydraulic cylinder 12 and the tail hydraulic cylinder 13 arranged in series in sequence, and the first guide rail 8 and the second rail.
[0014] Specifically, the head hydraulic cylinder 11 has a cylinder seat and a telescopic rod, and its cylinder seat is in contact with the ground through a first connecting piece. The first connecting piece is used as a main load-bearing point to bear the head hydraulic cylinder 11, the middle hydraulic cylinder 12 and the tail hydraulic pressure. The thrust generated by th...
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The invention discloses a hydraulic drive device and mode for axial movement of a wind tunnel super expansion segment. The hydraulic drive device comprises three hydraulic cylinders connected with one another in series, and the three hydraulic cylinders are connected with devices and linear guide rails through lug bases. The hydraulic drive mode includes the steps that the oil inlet amount of the three hydraulic cylinders is sequentially controlled according to the distance requirement of movement of the wind tunnel super expansion segment, so that the devices connected with the three hydraulic cylinders and the linear guide rails through the lug bases are made to be pushed in a level by level mode. According to the hydraulic drive device and mode, after the three hydraulic cylinders are connected in series, the devices are pushed to move in the level by level mode, the problem that the hydraulic cylinders are excessively large in size due to the fact that a single hydraulic cylinder pushes the devices to move is solved, and the three hydraulic cylinders small in size replace the single hydraulic cylinder, so that the device cost is reduced, the difficulty in device installation and fixing is lowered, and the hydraulic drive device and mode are convenient to design and operate.
Description
technical field [0001] The invention relates to a hydraulic drive mode, including a hydraulic cylinder connection form, an arrangement mode and a force transmission route, in particular to a hydraulic drive device for axial movement of a super-expansion section of a wind tunnel and its mode. Background technique [0002] The super-expansion section is an important part of the wind tunnel, and it is required to be able to move back and forth along the axis of the wind tunnel to ensure that the wind tunnel can be opened at any time after the test is over, which is convenient for the staff to check and replace the equipment. [0003] Due to the large size of the super-expansion section, hydraulic drive is usually used to meet the requirements of smooth movement of the super-expansion section. In order to meet the movement requirements of the super-expansion section of the wind tunnel, a single hydraulic cylinder is usually used to drive. Due to the large stroke, the size of the...
Claims
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IPC IPC(8): G01M9/04B66F19/00
Inventor 孙涛黄景博陈良泽
Owner BEIJING AEROSPACE YISEN WIND TUNNEL ENG TECH