In General
With its expertise on leading technologies, Dqcranes developed modular concepted QDX series Wire Rope Electric Hoist which has been certified with multiple patents. It adopts the trendy C-type design, rendering compact structure, smooth running, and precise positioning. Adopted various new technologies including inverter control braking energy recovery and safety monitory system. QDX Wire Rope Electric Trolley provides you with better logistics solution, assured reliability and safety for operation.
The lifting capacity of Dqcranes' QDX series Wire Rope Electrical Winches ranges from 1 t to 100 t. By its applications, it can be categorized as general usage, dedicated clean room usage, explosion-proof, and the nuclear plant use. QDX Electric Open Winches features compact and simple structures of module design with plenty of modular combinations. It deemed to be your ideal solutions for light, medium or heavy duty transportations and will surely satisfy your requirements under various working conditions.
Structure type
The integrated compact design of the hoisting motor, reducer, reel and lifting limit switch saves the user's space. Modular design enhances the reliability of the organization while effectively reducing maintenance time and cost. The design of the lifting mechanism strictly implements the relevant standards of FEM.
Technical characteristics
- Aluminum alloy reducer housing
- Smooth operation, low noise
- Lifetime lubrication (safe use period)
- Double - disc electromagnetic disc brakes
Lifting motor
Standard lifting motor is the two-speed variable-level motor (variable frequency hoisting motor for users to choose), all motors are cylindrical rotor. The standard degree of protection for the motor is IP55 and the insulation rating is Class F. The motor housing is made of aluminum alloy, the heat dissipation is good, and the hoisting motor is equipped with a fan to enhance the cooling effect. All winding of the hoisting motor are fitted with a thermistor (or thermal switch) to prevent possible overheating of the motor. The use of thermistors (or thermal switches) is in line with VDE0631 standard. Before the motor assembly, the stator winding must be 100% rigorous testing, test content and method in accordance with DIN EN60204-1 (VDE0113) related standards, including:
- Phase resistance
- Pulse voltage inductance
- Winding insulation and grounding conditions
- Winding resistance
The rated motor is also tested according to the VDE0530 standard: (test duration is 1 second) U test voltage = (2 x U rated voltage + 1000V) x 1.2 For variable frequency lifting motor can be installed according to the requirements of the installation code The encoder is usually mounted directly on the fan shaft end of the motor.
Technical characteristics
- Start current is small and torque is large
- soft start, good acceleration performance
- design long service life
- Technical parameters meet FEM and HMI standards
- high speed, low noise
Lifting reducer
Reducer shell with aluminum alloy material, light weight, corrosion resistance. The semi-grease-like lubricant in the fully sealed box allows all gears to be adequately lubricated without the need for replacement of lubricants during the design of the safe life cycle.
Each gear subjected to surface hardening and high precision grinding ensures smooth operation of the gear unit.
Technical characteristics
- small size, light weight
- smooth operation, low noise
- anti-corrosion, maintenance-free
Lifting brake
The lifting motor is equipped with a two-disc electromagnetic disc brake. The brake is integrated at the end of the motor and the brake is automatically closed when the motor is de-energized to prevent the load from slipping. Brake brake clearance after the first set without a manual adjustment (the gap can be adjusted by the brake spring), when the brake pad thickness below the set value through the additional monitoring switch can automatically alarm, prompt the user to replace. Two-disc electromagnetic disc brakes safe and reliable, the number of braking up to 1 million, in the safe use of the cycle without maintenance. According to the safety regulations, the braking torque of the selected brake not less than 1.8 times the rated torque of the motor.
Technical characteristics:
- fast action, high reliability
- maintenance-free, self-regulation
- dust-proof design, long service life
Drum, wire rope, guide rope device
The drum is made of high quality seamless steel pipe through CNC machine tool. After finishing, the rope groove on the reel can effectively prevent the occurrence of loose rope and rope.
Wire rope with a tensile strength of 2160 N / ㎡ of high-strength imported wire rope has good safety, long service life.
Standard guide rope with strong wear resistance and good self-lubricating engineering plastics processing, which greatly reduced the wear of the main force safety component of the wire rope is reduced, thereby enhancing the safety of the lifting mechanism. At the same time, for the use of different conditions, this will be provided by the ductile iron production of heavy-duty guide rope. Large, car operating agencies years of experience have shown that trolley travel mechanism can adapt to a variety of different working conditions, such as voltage instability or even worse conditions. Frequency conversion car running mechanism is the standard configuration of wire rope hoist, frequency conversion greatly reduces the lifting weight in the running process of shaking, and enhance the safety of the operation, while reducing the need for the operation cycle time and improve production efficiency.
Machine Structure
Limit the size of small: increase the effective work area to reduce the height of the plant, saving construction costs
Small size, light weight
Electrical Description
- The crane is powered by a safety trolley;
- Trolley conductor: Trolley conductor is an anti-corrosion, closed, tight, and closed, composite sliding contact line. Light weight, easy to install without maintenance; use temperature range: 30° C to + 50 ° C; high purity electrolytic aluminum H-type wire with high conductivity, voltage reduction, etc., which can load sustained rate of up to 80%, the pressure drop is small; collector glide speed is high, the fastest to 250m / min, to ensure continuous power supply.
- The power supply of the whole machine is controlled by the manual mains switch so that the power can be easily switched off during the maintenance of the crane or when it is not working for a long time.
- After the circuit circuit passes through the main switch, from the main circuit breaker to the main contactor with the start button and the emergency stop button control, followed by the protection switch;
- Crane with safety requirements Protection function: Leakage protection, Ground protection, Short circuit protection, Overheat protection, Overload protection, Over-speed protection, limit protection, Over-current protection, Fault phase protection, etc.
- The control circuit is output by the transformer, the control voltage is 48V, this control voltage ensures that when the crane and the trolley running at the same time, has enough power output;
- The crane is controlled by a pendant control or remote control, and all movements and walking movements are independent and operational at the same time.
- Protection class IP65, with flexible thin wire hanging, flashlight equipped with independent chute, with the car structure of the streamer trajectory separation, free movement along the main beam, the button life of not less than 50 million times.
- Imported or domestic well-known brand button remote control or rocker remote control of its launch handle with light weight, easy to carry, anti-collision, lightweight and other advantages of internal anti-interference ability. Can output off in time when an abnormality occurs. The remote control with the effective control circuit can drive the motor to start, stop, speed, fault reset and brake.
- The method of operation is very similar to that of the ground operating handle. First turn on the key switch, turn the emergency stop button, press the start / alarm button to start the crane system power, while the alarm sound. Press the direction key of the corresponding mechanism or shake the action lever of the corresponding mechanism according to the direction indicated by the nameplate.
- The remote control ensures that there is no signal dead zone at any position within 250 meters.
- The control box is made of steel and the surface is treated with anti-corrosive. Open the lid to require a special key or screwdriver. Internal parts layout is reasonable, easy to repair;
- Control box protection class IP55, with waterproof protection function;
- Ambient temperature: <45 ° C, humidity <90%;
- The main power supply for the crane is three-phase four-wire 380V (+/- 10%), 50Hz (+/- 5%) (export equipment or special requirements can be customized);
- The fixed cable for the crane is multi-core type, plastic insulated. The control cable has a cross-sectional area of at least 1.0 mm2 of the multi-strand copper cable. Other cable sizes are in line with international safety regulations;
- All wires are marked with color, number or line number, and are easily identified. All external cables are marked with a line number. The fixed cable is arranged in the cable duct or has a protective sleeve (a forming pipe tube);
- Small car towing system: The trolley streamer system consists of: elastic flat cable, tow rope car (with bracket), chute flat cable with a good elastic rubber insulated cable fixed and suspended in the towing car trolley bracket The trailer carriage moves in the chute, and the I-beam chute connects the trolley bracket through the support bar to the main beam so that in any case the tow cable does not interfere with each other
- All electrical components such as contactors are Schneider products.
