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Crane remote control

Crane remote control

1. A wireless remote control system is installed in the driving vehicle. The remote control operation instructions must be consistent with the original engine room operation instructions, and the function conversion of the two operation modes can be realized, matching the corresponding bell, lighting and other functions.
2. The traveling crane is controlled by four agencies and five speeds (in line with Chinese crane operating habits): large truck, trolley, main hook and auxiliary hook.
3. The type of remote control is rocker type (receiver power supply AC220V, use range: ≥100m).
4. The remote control is equipped with a start button, an emergency stop button, and a red safety rotary switch that meets the national standard.
5. The remote control has high immunity to electromagnetic interference, adopts duplex working mode, two-way communication, continuous signal transmission, and eliminates interference.
6. The transmitter is equipped with a battery voltage warning device. When the battery is low, the red light is on to warn, and the receiver will automatically shut down when the transmitter is over distance, under voltage, or the remote control fails after issuing an action command to ensure safety.
7. The receiver has dual CPU circuits, one for decoding, and one for a dedicated CPU circuit to monitor the safe operation of the system. Once a wrong command input is found, the remote control output can be cut off to ensure the correct output of each action command.
8. The transmitter is equipped with a user-configurable PIN code lock to prevent unauthorized personnel from accessing the system.
9. The launch principle adopts GFSK and TDMA technology. The wireless transmission of the system can choose frequency hopping communication or fixed frequency communication working mode, which can eliminate most of the interference. Using frequency hopping communication, the frequency will automatically switch among 15 different frequencies. The transmitter housing must be strong and durable. Anti-oil, anti-acid, anti-alkali, anti-corrosion, the shell is strong, wear-resistant, impact-resistant, drop-proof, and will not break.
10. The transmitter of the remote control system has a fine-tuning function. When fine-tuning, there is only one mechanism with one speed output. At this time, there is no output even if the joystick is in other gears.
11. After the transmitter is idle for a period of time, there are 4 options for automatic shutdown time.
12. The transmitter has an inclination sensor with four options of 45 degrees, 90 degrees, 135 degrees or no setting. In special circumstances, the transmitter tilts more than the set degree to operate the joystick, and the receiver does not move.
13. The remote control for variable frequency driving must be equipped with a reset switch of the inverter.
14. The CIM card is used to store configuration information. You can take out the CIM card module from a system and put it in the transmitter with the same programming system, and it will work the same. To achieve the effect of multiple remote control systems requiring only one receiver as a universal standby machine, it can be used as an emergency treatment option to reduce the cost of spare parts.
15. The display screen displays real-time information such as wireless signal quality, text fields (crane ID, etc.), power and alarm information. The display screen is clear in the daytime bright light environment.
16. Transmitter and receiver protection grade IP67, good dust and waterproof performance; working temperature -25℃-+55℃
17. Using SMART RADIO technology, the signal output power is automatically adjusted according to the signal strength, and the continuous operation time is increased.
18. The transmitter uses lithium batteries, which can be used continuously for a long time.
19. The charger is professionally designed, and the charging time is only two hours.
20. The transmitter has a built-in alarm and vibration device. When alarming, promptly and effectively remind the operator.
21. Each mechanism of the receiver has a safety relay to control the collinear of each mechanism, and the collinear is forcibly disconnected after the rocker returns to the zero position to prevent misoperation of driving due to the adhesion of the relay contacts, and the safety level is high.
Tianjin Fengshunlong Lifting Equipment Co., Ltd. has been engaged in the lifting industry for more than ten years. It is a professional gantry crane gantry crane, bridge crane crane, grab crane, cantilever crane, metallurgical casting crane, electric hoist, crane accessories, lifting Production and sales of various types of cranes such as platforms, bridge erecting machines, beam lifting machines, European-style cranes and related machinery and equipment.

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Early warning mechanism 20 2?, daily monitoring measures for key equipment 20 3?, hidden dangers of accidents The handling measures 20 4?, the handling procedures when the development of the situation exceeds the control capacity. 20 XI. Emergency response 21 1. Internal reporting procedures after an accident 21 2. Emergency handling when cranes occur in a dangerous state 21 3. Accident confirmation, analysis and rescue procedures 23 4. Accident external reporting procedures 24 5. Accident monitoring Measures 24 6. Personnel evacuation and placement principles, measures and starting conditions 24 7. Vigilance requirements at the accident site 25 8. Preparations and regulations to protect the safety of emergency rescue personnel 25 12. Accident investigation and on-site recovery 26 1. Accident investigation 26 2 1. On-site recovery 29 13. Training and drill 29 1. Emergency rescue training 29 2. Exercise (drill) 29 Appendix A: Crane mechanical part failure and its cause analysis 30 Appendix B: Crane electrical equipment failure and its cause Analysis? 31 Appendix C? Main instruments and equipment for inspection and testing of hoisting machinery 32 Appendix D: Crane hazard identification and risk control measures 35 Appendix E: Handling measures for hidden dangers of crane accidents 37 Emergency plan for dangerous accidents in crane workshop Based on the current specific conditions of the crane system, in order to ensure that the various potential accidents and risk factors that may occur are effectively controlled. 1. The distribution and general situation of the crane 1. The distribution map of the crane: 2. Basic overview: Existing cranes, single-beam cantilever cranes, and electric hoists. The interior of the main factory building, (including: department, department, ...). The peripheral department, (including: ). 2. The purpose of the preparation is to promote employees to improve their ability to respond to crane accidents, to control and eliminate the hazards of accidents in a timely manner, to minimize the casualties and property losses caused by accidents, to achieve safety first, prevention first, and prevent the expansion of accidents. In accident emergency assistance, we should organize emergency assistance to protect the safety and health of employees, minimize accident losses and the harm to society caused by accidents, and maintain the safety of people's lives and social stability. 3. The preparation basis is based on the "Special Equipment Safety Supervision Regulations", "Crane Safety Supervision Regulations", "Major Hazard Source Identification", "Emergency Response Law of the People's Republic of China" and "Opinions of the State Council on Comprehensively Strengthening Emergency Management Work", etc. Laws, regulations, standards and related regulations shall formulate this plan. 4. Scope of application This plan applies to the special emergency rescue of XXXXXXXX company cranes. 5. Working principles 1. People-oriented, safety first. Always put the protection of the lives of the people in the first place, earnestly do a good job in acciden
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Crane installation method

The installation team of hoisting machinery can choose manufacturers with installation qualifications to form a one-stop service mode of manufacturing, installation and commissioning. In addition, the selected installation unit must be a professional team with the "Special Equipment Installation (Maintenance) Safety Approval Certificate" issued by the provincial quality and technical supervision department, and have the installation qualification to install the corresponding lifting capacity. After the installation unit is determined, it should assist the installation unit to handle the special equipment start report before installation, and check whether the installation team’s construction organization plan, installation equipment, installation procedures, technical requirements, concealed project acceptance records during the installation process, and self-inspection reports meet the requirements. . After the installation is completed, the installation unit shall be supervised to conduct a comprehensive self-inspection, operation test, and load test. After confirming that the self-inspection is qualified, apply to a special equipment inspection agency for installation acceptance. It can be put into use only after passing the inspection and obtaining the "Safety Use Permit". After the acceptance is passed, the user should archive the relevant technical data such as the crane's random technical data, installation data and inspection report. In the future, periodic inspections, overhauls, transformations, accident records and other data that occurred in the future are also stored in the safety technical file of the lifting machinery.
22
2021-07

Crane

Crane usually refers to a single-beam bridge crane, the English name is Single-beam Crane. The main beams of single-beam crane bridges mostly use I-shaped steel or a combined section of steel and steel plates. Lifting trolleys are often assembled by chain hoists, electric hoists, or hoists as parts of the lifting mechanism. To Application scope Cranes are widely used in workshops, warehouses, stock yards, etc. in machinery manufacturing workshops, metallurgical workshops, petroleum, petrochemical, ports, railways, civil aviation, power stations, papermaking, building materials, electronics and other industries. It has the advantages of compact size, low building clearance, light weight, and small wheel pressure. To Model classification The main models of electric single beam are LDA electric single beam crane, LD electric single beam crane, HD electric single beam crane, LX electric single beam suspension crane, SDXQ manual single beam suspension crane and single beam grab crane. To Operating procedures a. Before a single-beam bridge crane with a cab, the driver takes over and starts to drive, the hooks, wire ropes, safety devices and other components should be inspected according to the requirements of the spot inspection card, and abnormal conditions should be eliminated if they are found. To b. For ground-operated single-beam bridge cranes, each shift should have a special person responsible for inspection according to the requirements of the check card, and abnormal conditions should be eliminated if they are found. To c. The operator must confirm that there is no one on the platform or track before turning on the main power supply. When the power circuit breaker is locked or there is a notice board, the main power supply can be turned on only after the original person concerned removes it.
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Crane structure

Ordinary bridge cranes are generally composed of a lifting trolley, a bridge running mechanism, and a bridge metal structure. The hoisting trolley is composed of three parts: a hoisting mechanism, a trolley operating mechanism and a trolley frame. The lifting mechanism includes a motor, a brake, a reducer, a drum and a pulley block. The motor drives the reel to rotate through the reducer, so that the steel wire rope is wound on the reel or lowered from the reel to lift heavy objects. The trolley frame is a frame that supports and installs components such as the lifting mechanism and the trolley running mechanism, and is usually a welded structure. The driving mode of the crane operating mechanism can be divided into two categories: one is centralized drive, that is, a long drive shaft is used to drive the driving wheels on both sides of a motor; the other is driven separately, that is, one driving wheel on each side is used. Electric motor drive. Medium and small bridge cranes mostly use the "three-in-one" driving mode that combines brakes, reducers and motors. Ordinary bridge cranes with large lifting capacity often use universal couplings for easy installation and adjustment. . The crane operating mechanism generally only uses four driving and driven wheels. If the lifting weight is large, the method of increasing the wheels is often used to reduce the wheel pressure. When there are more than four wheels, an articulated balanced frame device must be used to evenly distribute the load of the crane on each wheel. The metal structure of the bridge is composed of main beams and end beams, which are divided into two types: single main beam bridge and double beam bridge. The single main beam bridge is composed of a single main beam and end beams located on both sides of the span, and the double beam bridge is composed of two main beams and end beams. The main beam and the end beam are rigidly connected, and two ends of the end beam are equipped with wheels to support the bridge to run on the elevated frame. The main beam is welded with rails for the operation of the crane trolley. The structural types of the main beams of the bridge are more typical, including box structure, four-truss structure and open-web truss structure. The box structure can be divided into several types: on-track box-shaped double beams, off-track box-shaped double beams, off-track box-shaped single main beams and so on. The box-shaped double beam on the right track is a basic form widely used. The main beam is composed of upper and lower flange plates and vertical webs on both sides. The trolley rails are arranged on the center line of the upper flange plate. Its structure is simple. It is convenient to manufacture and suitable for mass production, but its own weight is relatively large. The cross section of the off-track box-shaped double beam and the off-track box-shaped single main beam are composed of upper and lower flange plates and main and auxiliary webs of unequal thickness. The trolley rails are arranged above the main webs, and the short stiffeners in the box body The slab can be omitted, in which the off-track box-shaped single main beam is replaced by a wide flange box main beam instead of two main beams. The dead weight is small, but the manufacturing is more complicated. The four-truss structure is composed of four plane trusses combined into a closed space structure. The upper horizontal truss surface is generally covered with a platform plate, which has light weight and high rigidity. However, compared with other structures, it has large dimensions, more complex manufacturing, and fatigue. The intensity is low, and it has been less produced. The open-web truss structure is similar to the off-track box-shaped main beam. It is composed of four steel plates to form a closed structure. Except for the main web which is a solid-web I-shaped beam, the other three steel plates are cut into many windows according to the design requirements to form a non-inclined bar. The upper and lower horizontal trusses are covered with platform plates, and the crane operating mechanism and electrical equipment are installed inside the bridge, with lighter weight and large overall rigidity. This is a type that is widely used in China. Ordinary bridge cranes are mainly driven by electric power, which are generally operated in the driver's cab, but also remotely controlled. The lifting capacity can reach 500 tons and the span can reach 60 meters. Simple beam bridge crane is also called beam crane. Its structure is similar to ordinary bridge crane, and its lifting weight, span and working speed are all small. The main beam of the bridge frame is a simple cross-section beam composed of I-beam or other section steel and plate steel. A hand chain hoist or electric hoist is equipped with a simple trolley as a lifting trolley. The trolley generally runs on the lower flange of the I-beam. The bridge frame can run along the track on the elevat
27
2021-07

Crane maintenance failure

The crane has brought great efficiency, convenience, and speed in production. However, due to the unsafe factors of machinery, the influence of the on-site use environment and frequency, frequent failures occurred. This paper mainly analyzes the common mechanical failures of cranes to reduce the number of maintenance and realize actual benefits. The following are common mechanical failures and problem analysis of cranes. 1. Wire rope 1. Failure analysis During the operation of the wire rope, the force of each wire rope is very complicated, because the position of each wire in the rope is different. Even under the simplest tensile force, the force distribution between each wire rope is different. The main reason for the wire rope breaking is overload. At the same time, it is also related to the number of windings on the pulley and drum. The process of changing from straight to straight and then from bending to straight, the more times of winding, the easier it is to damage and break; secondly, the breaking of the wire rope is related to the diameter of the bypass pulley, the drum, the working environment, the type of work, and the maintenance. 2. Preventive measures (1) The lifting capacity of the crane during operation should not exceed the rated lifting capacity. (2) The wire rope of the crane should be selected according to the type of work and the environment. The rope core before rope making is dipped with lubricating oil, which can reduce the damage caused by the friction between the steel wires. The double-wound rope has better flexibility, simple manufacture and the most widely used. (3) Regularly lubricate the wire rope. (4) Don't subject the wire rope to sudden impact when the crane is operating. 2. Reel and steel wire rope pressure plate The drum is an important component of the crane, and the wall thinning, holes and fracture failures may occur during use. The cause of these failures is the contact between the reel and the wire rope to squeeze and rub against each other. When the reel is thinned to a certain degree, it will break because it cannot withstand the pressure exerted by the steel wire rope. In order to prevent the occurrence of mechanical accidents such as the reel, in accordance with national standards, the reel’s wall should be replaced in time when its wall wear reaches 20% of the original or cracks occur. Three, reducer gear 1. Failure analysis The reducer is an important transmission component of the crane. The torque is transmitted through gear meshing, and the high-speed operation of the motor is adjusted to the required speed. In the process of transmitting torque, the gear will experience broken teeth, pitting on the tooth surface, tooth surface rubber and , Gear surface wear and other mechanical failures, the causes of gear failures are as follows: (1) Fatigue fracture caused by short-term overload or impact load, repeated bending; (2) The tooth surface is not smooth, there are raised points that cause stress concentration, or the lubricant is not clean; (3) Lubrication failure due to excessive temperature; (4) Wear is caused by hard particles entering the friction surface. (5) Preventive measures (6) The crane cannot be used for lifting, and the starting and braking should be slow and stable. It is forbidden to reverse the vehicle suddenly under non-specified circumstances; (7) The lubricant should be replaced in time, the housing should be cleaned, and the appropriate type of lubricant should be selected at the same time; (8) Always check whether the lubricating oil is clean; if the lubrication is found to be dirty, replace it in time.

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