Xinhe Qianjin Hydraulic Machinery Factory

National toll-free number 4000319516 mobile phone contact
18903298985 (Mr. Lang)

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Shutdown working principle and structure


Installation series screw
Shutdown
Mechatronics fully sealed structure, suitable for outdoor use Work, using worm gear transmission. It is equipped with a stroke limit and torque protection device. The stroke limit device consists of a set of counting gears and hard contact limit switches. When the gate is opened or closed in place, the counting gear drives the stroke limit rod to limit the hard contact. The switch works and automatically stops the opening and closing action of the gate. When the travel limit switch does not operate for some reason and the torque increases, the torque protection switch operates to protect the opening and closing device from accidental damage. The electric device is also equipped with a pointer opening indicator and heating resistor. The pointer-type opening indicator is connected to the counting gear, which can intuitively reflect the opening position of the gate. The heating resistor is automatically turned on during the
shutdown
operation to remove the heat in the electric device. moisture, ensuring internal dryness and ensuring the reliable operation of each electrical component. The opening and closing nut and the output end of the electric device adopt a tooth-type connector. The claws of the tooth-type connector leave a gap, so that a hammering effect occurs at the moment when the gate is opened, achieving the purpose of hammering start and increasing the opening and closing of the gate. The initial force at the time. The cast iron support has a closed structure to withstand the gravity or reaction force when opening and closing the gate. It is equipped with load-bearing bearings and has a beautiful appearance. It can be controlled on site or remotely. Manual, electric automatic switching.



Dual-purpose flashlight
Closed
Body models include I single-hanging type















Double hanging type



Moving head screw type hoisting mechanism

The mechanism is very simple and the installation is relatively simple. It is widely used in channels. The gates on culvert gates and water diversion hubs are opened and closed. However, during use, gate top accidents often occur. What are the causes of such accidents? The reason for top gate accidents is the operator's work. Carelessness, failure to check first and then operate according to the gate opening and closing procedures, or the original operator asked for leave due to circumstances, and the replacement staff operated blindly when they were not familiar with the opening and closing procedures and methods. For example, if the opening and closing direction is reversed, the gate is opened when it is in a closed state, the wrong button is pressed when opening and closing electrically, or the direction is reversed when opening and closing manually, the closing direction is mistakenly operated to open the gate, and some operations are performed when the gate is closed. The personnel were not focused and failed to stop immediately when the gate reached the lower limit position. In some cases, the limit nut and limit mark of the screw were displaced and failed to limit the position. The electric hoist will also encounter changes in the power phase sequence when the power supply department is repairing electrical equipment or power supply lines, causing the motor on the hoist to change its original running direction, resulting in a change in the opening and closing direction of the hoist. At this time, if the gate is in If the gate is opened when it is closed, a gate topping accident will inevitably occur. Top gate accidents caused by human factors

During the operation of the gate, obstacles such as trees and other floating objects or stones are brought to the bottom of the gate by the high-speed water flow or washed into the gate slot and get stuck. If at this time When the gate is closed, the lower edge of the gate has been blocked by an obstacle before it touches the bottom of the gate and generates a reaction force. However, the limit mark or limit switch on the screw is not in place yet and cannot serve as a limit stop or to remind the operator to stop the machine. , so the operator will not stop the machine, and the hoist will drive the gate to continue to press down. When the reaction force exceeds the endurance of the hoist or the hoisting platform, a gate topping accident will inevitably occur. During use, special attention should be paid to the problem of top gate accidents of screw hoists. If such an accident occurs, it must be dealt with in time to avoid more serious accidents.

General requirements for the operation of the moving head hoist, check the working status of the power distribution equipment, close the main power switch of the hoist and shut down, and activate the backup power supply immediately when the network has a power outage, and perform power switching as required. . Check whether the three-phase power supply is missing phases and whether the voltage meets the requirements. 3. Turn on the power switch in the switch box, check the power indication, open and close the gate in sequence, and the opening and closing operating direction should be consistent with the indicated direction. , door jam, heavy opening and closing, hoist overload, stagnation, abnormal noise from the gate or hoist, etc., all should be stopped in time for inspection and troubleshooting. . When parking at a certain height, if the brakes slip, emergency measures should be taken to force the brakes. . During the operation of the hoist, every time the hoisting height is exceeded, the oil mark on the bearing sleeve, bearing bush and other lubricating parts should be tightened and refueled once. . If the machine suddenly stops during the operation, cut off the power supply first, find out the cause, and then eliminate the fault before starting the machine again. . When the gate is open, it is prohibited to move the braking equipment and fixing screws. , cut off the power supply after opening and closing, and fill in the power distribution panel operation record.

Attention requirements and general requirements during the operation of the moving head hoist (1) Overload operation is not allowed. ⑵ During operation, sudden reverse operation is not allowed to avoid emergency braking, sudden increase in inertia force, and overload vibration of the whole machine. ⑶ During operation, if the operating mechanism fails and cannot be controlled, the power supply should be cut off quickly to stop the hoist. ⑷When the gate opens close to the maximum or closes close to the bottom of the gate, attention should be paid to stopping the car in time and not relying entirely on the limit system. ⑸Monitoring content of operating equipment (switch box) ①The switch relay protection device has good contacts, firm joints, and sensitive action. ②Whether the on, off, and stop buttons are pressed incorrectly. ③ Whether the current, voltage and other instruments are normal. , Motor monitoring content (1) Whether the running direction is correct. ⑵ Whether the motor is running with phase loss. ⑶ Whether the temperature rise of the motor is too high and whether there is any peculiar smell. ⑷Whether the motor is overloaded and whether there is any abnormal noise. , Limit device and stroke indication monitoring content ⑴ Whether various limit devices are sensitive and effective, and the dead zone should not be too large (generally not exceeding whether it should be adjusted. ⑵ Opening height data display is accurate. , Hoist monitoring content ⑴ Whether the running direction Normal. ⑵ Check whether the drum winding is normal and whether there is any loose winding phenomenon. ⑶ Check whether each running part touches the cover.

Depending on the operation of the electric head hoist, you should pay attention to the following points , Pay attention to whether the screw rod of the gate hoist moves in the required direction, whether the motor and gearbox are running well, and whether the gearbox and screw runner move synchronously. Observe whether the motor speed and temperature rise are normal, whether the vibration is too large, whether the sound Whether it is abnormal. If any abnormality is found, the machine should be stopped immediately for inspection to prevent deformation or damage of the equipment, and reported to the dispatcher and the project leader in charge. After the shutdown is completed, the number of gate switch wires should be checked again to see if it is accurate.

During the operation of the moving head hoist, the gate must be operated in strict accordance with the regulations to avoid accidents. The specific steps are as follows: 1. When the gate hoist is operating, the person in charge of the unit must issue a dispatching instruction. Without dispatch, unauthorized operation For hoisting and closing, the relevant personnel will be held seriously accountable. 2. Non-staff of the unit are not allowed to operate the hoist and related equipment. 3. The operators must be familiar with the operation, concentrate on their thoughts, stick to their posts, and strengthen supervision. During the opening and closing process, the operator Personnel should pay attention to safety. 4. Before turning on the machine, check the position of the screw rod and whether there are any abnormalities in the motor, gearbox, belt, etc. After confirming that they are normal, turn on the power and turn on the machine. The closing purpose, equipment inspection status, and start-up time should be filled in the "Gate Hoist Operation Record". 5. After the shutdown and power outage are completed, the shutdown time, switch wire quantity, equipment operation status, etc. should be registered in the "Gate Hoist Operation Record". "Machine Operation Record", and the opening and closing time, number of switch wires, dispatcher, operator, opening and closing purpose, etc. are registered on the "Water and Rain Observation Table". 6. If there is a power outage during the opening and closing process, the downturn should be Place the switch in the neutral position and turn off the power. Then remove the belt and open and close manually.


Platform
Water inlet machinery
Co., Ltd. is a professional manufacturer designated by the Ministry of Water Resources to produce water conservancy hoists and gates. It is a production and operation enterprise integrating product research and development, production, sales and after-sales service. The company has sophisticated production equipment, strong technical force, and complete State-of-the-art testing methods and a sound quality assurance system ensure that the technical indicators of each product meet relevant national standards. Over the years, the company has relied on excellent product quality, reasonable product prices, and warm and thoughtful after-sales service, and its products have been widely used in Among the most influential water conservancy projects in the country, it has won the trust and praise of the vast number of users. Facing the opportunities and challenges in the future, Hucheng people will continue to adhere to the business philosophy of people-oriented, customer-oriented, and quality as the soul. We sincerely welcome new and old users to visit us for guidance and work together to create a better future!

Our leading products

, screw hoists of various specifications

, various specifications of winch hoists

, two-way water-stop cast iron gates

, various specifications of steel gates and
stainless steel gates , Stainless steel channel gate.

, various specifications
Cleaning machines, such as rotary grill cleaning machines, reverse grill cleaning machines, grab cleaning machines, mobile grab cleaning machines Machine, mobile hydraulic grab cleaning machine, circulating tooth rake cleaning machine, circulating tooth rake cleaning machine.
The company can customize various special-shaped gates, rubber water stops, etc. according to user requirements.