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Lift the gate to the installation position, and use the Anchor bolt holes for lifting. Pay attention to lifting the door body and frame as a whole as much as possible. When the gate is too large or cannot be lifted as a whole due to the on-site location, the door body and door frame can be disassembled and lifted separately, but care must be taken to protect the sealing surface.
Through the reserved holes on the hoist platform, insert the hoisting rope, lift the gate as a whole to the installation position, put the gate in place, and use the processing surface hanging wires on both sides of the door frame to find the right and left positions. , the inclination in the left and right directions is less than that of the anchor bolts (or the welding bolts are inserted into the mounting holes and welded to the embedded plate). When the gate is installed on the wall, the adjacent anchor bolts should be welded into a whole with a round steel no smaller than the size, screw on the nuts, and loosen the lifting rope.
Pass the lifting rope through the gate lifting lugs, pull the door body open, and adjust the verticality of the gate sealing surface. By adjusting the bolts at the four corners of the gate, the verticality error of the gate sealing surface is less than /, and check again After the gate is tilted left and right, tighten the bolts at the four corners with shims and tighten the nuts to make them secure (for wall-mounted gates, one nut can be placed on the bolts at the four corners through the upper and lower ones in advance. Verticality error of the nut adjusting sealing surface).
Lower the door body so that the door body matches the door frame (use a feeler gauge to check) and keep the gap between the upper and lower sealing surfaces. If the gap exceeds the standard, place inclined iron on the back of the door frame and tighten the anchor bolts slightly. Unscrew until the clearance is acceptable.
The concrete surface around the gate shall be poured and tamped with fine mortar concrete twice. Note that plain concrete must be used. After pouring, a vibration pump should be used to tamp it firmly. It is better to use expanded concrete. After the secondary pouring of concrete has completely solidified, check the fastening nuts one by one.
With flange means that during installation, first connect the sealing gasket on the matching flange pad and the gate frame flange in place, and then lift it into place. After adjustment, spot weld with the embedded steel pipe and solidify after adjustment.
For larger gates, the guide rails will be installed in place. Pay attention to keeping the straightness between the guide rail and the door frame less than 1.
Lower the lifting hammer into the pre-embedded hole on the hoist platform, taking the center line of the gate lifting lug as the benchmark. Draw cross lines on the hoist platform to determine the installation center of the hoist.
Draw the corresponding cross lines on the bottom plate of the hoist. Place the hoist initially in place and screw the handle into the screw rod (the manual hoist shakes counterclockwise, and the electric hoist shakes in the direction shown) .
Connect the segmented screw rods into a whole, and pay attention to insert the casing part of the shaft guide into the corresponding segments.
Match the center of the hoist to the cross line on the platform, use a level to level the bottom plate of the hoist, and then spot-weld it with the embedded steel plate. Put the lower end of the screw rod in place with the gate lifting lugs and insert the pin review wire. The verticality error of the rod is less than / the total length of the rod is less than / and then the base plate of the machine and the embedded plate are welded together.
Install the shaft guide frame body in place and tighten it with bolts with the casing pre-set on the screw rod. Pay attention to the shaft guide tube
Be concentric with the screw rod, especially the distance from the bottom shaft guide to the gate lifting lug. Should be larger than the gate diameter. The remaining shaft guides must not collide with the screw connecting sleeve during the opening and closing process of the gate.
Place the hoist guard in place and fasten it to the top of the hoist with bolts.
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There should be no jamming during the manual operation of the manual hoist before it can be put into operation. Before the electric hoist is powered on and operated, the stroke limit switch and over-torque protection switch must be wired correctly according to the requirements of the supporting electric device. Only then can the electric device shell be opened and operated in the following sequence:) The gate is fully closed. position (leaving ~ margin), adjust the closing stroke switch to the position. b) Manually open the gate to the fully open position (when the gate is large, you can turn on the temporary power supply and jog it to close to the fully open position and then manually operate it in place). Adjust the open position limit switch in place) Correctly follow the requirements of the electrical schematic diagram For the above wiring operations, please refer to the relevant chapters in the instruction manual of the supplied valve electric device.
) Electric operation, observe the operation conditions throughout the entire stroke. When the gate is closed and opened to the full position, the stroke limit device should act accurately.
During the operation of the gate, pay attention to that the door body should run smoothly and close in place, and there should be no left and right tilt and jamming
When there is left and right tilt or unilateral jamming, the inclined wedges on both sides of the gate frame should be adjusted to tighten. The position of the device until normal.
After the above adjustments are completed, the water flow test can be carried out.
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The electric hoist uses plate lithium grease or the corresponding grease required in the "Valve Electric Device Instructions", which should be checked and added once a year.
Manual hoists (hand wheel type and hand crank type) open the gate counterclockwise and close clockwise. Pay attention to the direction during operation. After the gate is closed in place, no more forceful operation is allowed to prevent the screw rod from bending.
When the electric hoist is operated manually, the switching handle should be moved to the manual position. After the manual operation is completed, the handle must not be moved back. It will automatically switch when it is electric.
The wiring and debugging of the electric hoist shell must not be carried out on rainy days. After the adjustment is completed, cover the shell and pay attention to the sealing effect. The debugging work should be done immediately after opening the cover. It is not allowed to debug after opening the cover.
Electric hoists all work on a short-time basis, and the continuous debugging time should not be too long.
Even for gates that are infrequently used, it is recommended to run them at least once a month.
After the gate is installed, it is strictly prohibited to carry out secondary grouting with the gate body open.
The water test shall not be carried out before the hoist is installed on the rear edge of the gate.
When installing the gate, attention should be paid to the direction of the water pressure it bears. The reverse water pressure endured by the one-way gate must not exceed the specified value.
The gate is usually made of cast iron or ductile iron, which has good corrosion resistance. Anti-corrosion work is usually performed on it once every year. When the medium is highly corrosive, the anti-corrosion period should be determined according to the specific circumstances.
As an important metal structure equipment, steel composite gate plays a decisive role in hydraulic structures. In the past water conservancy projects, flat steel gates were mostly used for buildings with large and medium apertures and high water heads, while cast iron gates were mostly used for buildings with small and medium apertures and low water heads. The steel composite gate is a new type of metal structure water retaining equipment that has just emerged in recent years. Its overall structure is between steel gates and cast iron gates.
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