JTK/2JTK type mine hoisting winches

Production enforce standard and range of application:

JTK/2JTK type mine hoisting winches is according to Q/HBWF001 “JTK type mine hoist” enterprise standards, AQ1032-2007" JTK type hoist safety inspection specifications" industry standards and "coal mine safety regulations" designed and manufactured products. Used in coal mine, metal and non-metal mineral of the ground or underground vertical or inclined shaft for lifting material.

Technical Features:

JTK/2JTK type mine hoist winder adopts control AC contactor on and off to switch resistance for speed adjustment. Mine winder has integrated and separated two kinds of structures. equipped with two sets of brake device, manual brake and electromagnetic brake work independently, double protection, accord with the requests of coal mine safety regulation. Compact structure, small volume, convenient and flexible. A coil protection rope and locking device, depth indicator, failure protection and etc.

Full Digital Frequency Control System of JTK/2JTK type mine hoisting winches:

1.The primary loop control mode: Full digital frequency control, capacity to choose enough margin.

2. Control loop mode: PLC programmable controller. Adopts the new type of electric control system, digital frequency control of motor speed, Siemens PLC control,the control principle of conform to the requirements of the ascension process, and has a more perfect hardware and software protection link, the major protection to realize double protection. Electric control system based on signal to case, manual or semi-automatic acceleration, automatic deceleration, automatic parking.

Features:

①stepless speed regulation, stable speed and continuous adjustment

②Compared with the traditional form of rotor resistance energy saving is obvious

③Advanced technology, represents the development direction of electric hoist communication

④Mature technology, has entered the stage of popularization

⑤Noise less, small volume

3.Main features of equipment:

①Double circuit power supply into line with the corresponding control, measurement and protection functions; Double power supply into line using a with a way for working;

②Install UPS uninterrupted power supply device in cabinet, supply power to control equipment and PLC, to ensure that after the low voltage power failure, can make mine hoist to achieve reliable safety braking and maintain data;

③Using frequency converter as digital regulation speed control device, realize stepless speed regulation, to achieve steady speed; Canceled a large number of rotor resistance, significantly reduce the energy consumption, save operating cost; Also reduces the occupied area;

④Has a strong anti-interference ability, strong adaptability to environment; Harmonic component is small, the grid pollution-free; Adopts frequency conversion vector control technology, the actual speed with predetermined speed change, speed figure from the constant speed to decelerate paragraphs, deceleration period of crawl to the period of transition of smoothness good, compared with the DC drive hoist, had better performance of speed adjustment;

⑤Mine hoist digital inverter power supply device running according to the "S" type given curve, through the man-machine dialogue interface, use convenient debugging, according to the use of different occasions to make different parameters;

⑥Has strong internal software failure and external line fault diagnosis function, in the case of diagnosis to the fault, the device first stop working automatically, prevent fault further, at the same time, making accurate fault alarm.

Safety Protection:

1. The command control handle zero interlock

2. The brake handle zero interlock

3. The main circuit power protection

4. Brake oil pressure limit protection

5. misorientation protection

6. constant speed, overspeed protection

7. slowspeed overspeed protection

8. 0ver winding protection

9. depth indicator axle broken protection

10. Spring fatigue,the wear of brake shoe protection

11. safe device against slack rope

12. Slide protection

13. Inverter failure

14. rope adjusting interlocking

15. constant speed protection

16. 2m speed limit protection

17. overload protection

18. full warehouse protection

19. oil temperature protection

20. Hydraulic station high residual pressure protection

21. The rope regulating clutch failure protection

22. undervoltage protection

Spindle device of JTK/2JTK type mine hoisting winches:

Spindle device is the operation mechanism of mine hoist, and is the main load-bearing part.It take the hoist full torque, as winding type hoisting wire rope to withstand various normal loads(static load and dynamic load)and special load. Is mainly composed of the main shaft, bearing, bearing seat, bearing beam, drum, supporting wheels, plate, high strength bolt and other components. Spindle adopts 45#carbon steel forging, after two times nondestructive flaw detection, mechanical performance testing, in line with the national standard, practical and reliable performance, besides and coupling parts, no longer the other grooving on the spindle, not only ensure the strength and ensure the spindle rigidity, greatly enhance the security of the spindle and prolong the service life; Adopting the domestic main shaft bearing, watts, bearing, reliable operation, improved the efficiency of rotation.

Drum is made of 16mn high quality low carbon alloy steel plate welding forming, the roll deformation can quickly spread, after carrying the deformation and stress concentration, effectively improve the bearing capacity of roll and the fatigue strength. Drum after aging vibration stress re-lief to prevent the drum deformation after welding; Brake disc are all made of 16mn plank, resistance to deformation, wear-resisting.Can be made into split according to user demand, all the subdivision of drum and the brake disc, are probably ready in factory, can be used in the use of on-site installation, do not need to make any rework on site.

Double drums mine hoist using radial gear block of hydraulic rope adjusting method. When adjusting rope, through the work station control easily, with hydraulic clutch action, so that the spindle and activity produces relative rotating drum, adjusting fast and reliable.

The Structures of drums showing as below:

①0verall welding structure.This drum structure is overall welding, brake disc also welded on the drum at the same time.

②0verall welding structure.Brake disc is divided into two halves and connect drum with high strength bolt.

③some parts of Drum is welded, drum is divided into two or four parts, disc brake is divided into two halves, and connect drum with high strength bolt.

Speed Reducer of JTK/2JTK type mine hoisting winches:

Parallel axes gear reducer is suitable for metallurgy, mining, transport, cement, construction, chemical, textile, light industry and energy industry the transmission of all kinds of mechanical equipment. Gear is made of high strength low carbon alloy steel after carburizing and quenching, gear hardness HR58-62, gear adopts gear grinding technology, high precision, good contact.

Features:

1.This product adopts Double circular arc type cylindrical gears with two levels of transmission.

2.Adopts gear splash lubrication method, do not need to add compulsory lubrication station.

3.Reducer has big bearing capacity, long service life.

4.The smooth running, low noise, good sealed performance.

5.Safe and reliable, conveniently to install and use.

Disc brake of JTK/2JTK type mine hoisting winches: 

Disc brake is an important executive components of mine hoist and mechanism of dynamic system of hydraulic station, pipeline system supporting a complete set of brake system, suitable for hoist working brake and safety brake

Disc brake is a brake force generated by the butterfly spring, brake off by hydraulic oil pressure, brake force along the axial action type brake. The braking force size, use, maintenance and safe operation and adjustment of the brake force has significant influence on safety running of the whole lifting system. Installation and use unit must attach importance to it, to ensure safety operation.

Features:

1. Braking force has good adjustability

2. Small Inertia, fast, high sensitivity

3. High reliability, Multiple brakes can work at the same time, not less than 2 sets, can be up to 12 sets, so if there is a failure, only a few lost braking force, usually can still brake in hoist, if there is damage to the hydraulic station and hydraulic system, the brake device can automatically brake

4. Good commonality, disc brake has a lot of parts are common, and different hoisting machine can match with different quantity and different types of disc brake

5. Simple structure easy to maintenance

Hydraulic station of JTK/2JTK type mine hoisting winches: 

Hydraulic station is an important safety and control components of mine hoist, with disc brake, they compose into a complete set of brake system. Its performance and quality directly affects the mine production and equipment service life. This hydraulic system has specialized designing and manufacturing for mine hoist. It use the domestic high-quality hydraulic element, auxiliary parts, hydraulic system adopts the integrated circuit block structure,   the overall structure is advanced, reasonable, reliable, and easy to maintenance.

Features:

1. Can provide different oil pressure value pressure oil for disc brake, in order to obtain different braking torque.

2. Under a state of emergency, can make brake oil pressure rapidly to the setting in advance of a certain value, after a time delay, all the brake oil pressure quickly return to zero, the brake to achieve full braking state.