Anchor cable constant resistance central connection device
An anchor cable and Zhonglian technology, which is applied in the installation of anchor rods, mining equipment, earthwork drilling and mining, etc., can solve the problems of reducing the support effect, danger, and loss of pre-tightening effect of the anchor cable, so as to improve the overall stability and bearing capacity effect of ability
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Embodiment 1
[0027] Such as Figure 1 to Figure 4 As shown, an anchor cable constant resistance intermediate device, the steel strand 71 at the end of the anchor cable and the steel strand 72 of the adjacent anchor cable are respectively connected to the transverse resistance intermediate device through locks, and the device includes a cylinder 3 , the hollow piston rod 2 and the oil sealing end cap 1, the interior of the hollow piston rod 2 is provided with a steel strand connecting plate I22, the outer cylindrical surface of the cylinder 3 is provided with a steel strand connecting plate II31, and the steel strand The connecting plate I22 and the steel strand connecting plate II31 are respectively provided with tapered holes in opposite directions, and the steel strand 71 at the end of the anchor cable is fixed in the tapered hole of the steel strand connecting plate I22 through a lock. Steel strand 72 is fixed in the tapered hole of steel strand connecting plate II31 by lockset;
[002...
Embodiment 2
[0035] The difference from the first embodiment is that when the oil port I4 is the oil inlet port and the oil port II5 is the oil return port, the constant pressure valve 6 is a hydraulic control check valve. The hydraulic oil flows from the left side of the piston plate 21 to the right side through the hydraulic control check valve. The check valve has a reverse cut-off function. When tightening force, the control oil circuit of the hydraulic control check valve makes the hydraulic oil reverse flow, and when the anchor cable is loose, the left hydraulic oil flows to the right and pushes the piston plate 21 to move until a new balance is reached. The hydraulically controlled check valve can dynamically adjust the position of the piston plate 21 according to the hydraulic environment of the cylinder without replenishing oil at any time; when the hydraulic oil consumption is large and the pre-tightening force required by the anchor cable cannot be reached, the hydraulic pump is ...
Embodiment 3
[0037] The difference from implementation one or two is that further improvements such as Figure 6 As shown, the hydraulic pump is an electro-hydraulic pump and is connected to a servo motor. There is a pressure sensor on the inner wall of the cylinder 3, and the pressure sensor sends the hydraulic pressure signal inside the cylinder 3 to the controller, and the controller controls the hydraulic pump by controlling the servo motor. The pressure sensor can transmit the oil pressure in the cylinder to the external controller, and the staff can further understand the pre-tightening status of the anchor cable on the external display screen to prevent pre-tightening failure. At the same time, the controller can control the servo motor to adjust Hydraulic pump flow, electric hydraulic pump flow is stable and even, easy to control.
[0038] The constant pressure valve 6 is a wireless control valve. The constant pressure valve 6 is provided with a wireless signal sensing board, a si...
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