JZ/2JZ model sinking hoist winch

JZ/2JZ model sinking hoist winch application:

The JZ/2JZ model sinking hoist winch is mainly used for suspending hoisting platforms, water pumps, water pipes, grouting pipes, ventilation ducts, and other tunneling equipment during shaft excavation in coal mines, metal mines, and non-metal mines. This winch is designed based on the working system of suspended equipment during shaft excavation; therefore, it is only suitable for short-term work and not for long-term heavy-duty operation. Except for the safety ladder winch, the shaft sinking winch must not be used for carrying personnel!

Warnings of JZ/2JZ model sinking hoist winch:

(1) The winch must not be used in locations with flammable or explosive materials such as gas, coal dust, or carbon monoxide!

(2) Winch speed changes must be performed when the power is off and the machine is stopped!

(3) Except for the safety ladder winch, other shaft sinking winches must not be used for carrying personnel or hoisting!

(4) The winch must not be overloaded!

(5) The winch must not be operated at excessive speed!

(6) The winch must not be allowed to slip! 3. Operating Conditions

Operating Conditions of JZ/2JZ model sinking hoist winch:

(1) The winch shall not be used in locations with flammable or explosive gases such as methane or coal dust.

(2) The ambient temperature for winch operation shall be -25℃ to 40℃.

(3) When the altitude exceeds 1000m, the cooling effect of air and the decrease in dielectric strength must be taken into account. The selected electrical equipment shall be designed or used in accordance with the agreement between the manufacturer and the user.

Spindle of JZ/2JZ model sinking hoist winch:

Main Spindle Assembly: The drum of the main spindle assembly is entirely cast in one piece and bolted together. Its tightening torque should meet the specifications.

The main spindle assembly mainly consists of the main spindle, large gear, drum, brake disc, bearing housing, and bearings.

The main spindle bearings are double-row self-aligning bearings, which have strong adaptability, improve equipment operating efficiency, and reduce power consumption. The bearing housing has a cast structure, is simple and reliable, and is easy to install and maintain.

Wire Rope Outlet Method: In single-drum shaft sinking winches, the wire rope generally exits from the top of the drum; in double-drum shaft sinking winches, the wire rope of the fixed drum generally exits from the top, while the wire rope of the floating drum exits from the bottom.

Reducer of JZ/2JZ model sinking hoist winch:

The winch uses a reducer consisting of an involute cylindrical gear and a worm gear reducer, mainly composed of a high-speed shaft, intermediate shaft, low-speed shaft, gears, worm gear, bearings, and a housing. The speed control lever allows for both fast and slow speeds, and its main feature is its simple structure. An inspection hole cover is located on the upper part of the reducer, allowing for inspection of the meshing of each gear pair, observation and analysis of the lubricating oil, and the addition of new lubricating oil. An oil dipstick is located at the bottom of the reducer to determine the oil level.

The safety ladder shaft sinking winch uses a dedicated reducer that can be operated manually or by motor. It can complete urgently needed hoisting tasks after a power outage.

Brake device of JZ/2JZ model sinking hoist winch:

The working brake uses wheel-type brake shoes. A spring preload applies force, causing the brake shoes to move radially along the circumference, creating friction with the brake wheel and generating braking torque. The position of the preload spring can be adjusted to change the required braking force, ensuring reliable and effective working braking.

The working principle of the electro-hydraulic brake is as follows: When working braking is required, the electro-hydraulic push rod is de-energized and descends. Under the action of the spring preload, it pushes the brake arm, displacing the brake shoes and applying radial pressure to create friction with the brake wheel, generating braking torque and stopping the brake wheel's rotation, thus entering the working braking state. During operation, the electro-hydraulic push rod is energized and rises, pushing the brake arm to apply force to the spring again, causing the brake shoes to displace and release the brake wheel, allowing the brake wheel to rotate, thus entering the working state.

The working motor of the electro-hydraulic push rod of the working brake is connected in parallel and synchronously with the main motor. When the electro-hydraulic push rod motor is working, the main motor operates when the brake shoes are released.

Different specifications of electro-hydraulic brakes and different sizes of brake wheels are equipped to meet the different needs of each well-drilling winch, ensuring effective working braking.