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Common problems with the use of industrial operating handles

As an important part of the control system of construction machinery, the stable use of industrial operating handles determines the accuracy and stability of human-machine control systems. This issue will briefly explain the common problems and simple troubleshooting methods that industrial operating handles may encounter during use. 1、 Damaged leather cover and cap: Damaged leather covers are currently the most common problem in the use of industrial operating handles. In many harsh working conditions, such as the handle of high-altitude work vehicles and agricultural machinery, the waterproof leather cap on the outside of the handle may be damaged due to various external factors such as welding sparks, mud, and corrosive liquid splashes. At this point, the leather cover has already become invalid. If you continue to use or remove the leather cover for use, The possibility of external pollutants entering the handle and causing damage to the button or electrical performance. There are usually two situations, one is when the leather cap on the upper end of the electronic control handle is damaged. In this case, the leather cap is usually used to protect the upper button or rocker button, and damage to this situation can usually be achieved by replacing the upper leather cap. If the leather cover on the upper end of the electronic control handle is not replaced and continues to be used, it may damage the internal button during future use, resulting in the failure of the upper button on the electronic control handle.

Principle of industrial handle potentiometer

In the industrial handle, there are two main output forms used by the electronic control handle: potentiometer type output and Hall type output. The difference between the potentiometer type and the Hall type of the electronic control handle has been described in the previous article, which is roughly as follows: The characteristic of the Hall type is that it has an active, non-contact operation and a longer lifespan. Not suitable for occasions with metal dust. Most of the potentiometer used on general industrial handles are carbon film potentiometer or metal film potentiometer, which change the resistance by sliding the brush or sliding rod on the carbon film. The key process difficulty lies in the carbon film. The carbon film of the resistor body is coated on the surface of the substrate with ground carbon black, graphite, quartz and other materials. The characteristic is high resolution, good wear resistance, and long service life. The disadvantage is current noise, slightly poor linearity, poor moisture resistance, and resistance stability. Because industrial handles need certain life requirements, and certain operating precision and accuracy, the use of carbon film potentiometer or metal film potentiometer can give consideration to both the service life and operating precision. The relative linear impact and current noise have less impact on the use of industrial handles, and the potentiometer itself and the electric control handle itself will be protected against dust and water, so the disadvantage of moisture resistance will not exist. The industrial joystick potentiometer usually has the following faults according to its use environment: 1. The burning of potentiometer caused by wrong wiring is externally manifested as sparks or potentiometer blackening, heating and burning. 2. Poor contact or breakpoints caused by carbon film damage can be measured using an oscilloscope to capture waveforms. 3. The brush blade is diverted or deformed, usually manifested as a change in linear output or no output.

Common types of industrial joysticks

As a commonly used component in industrial control, industrial joysticks are widely used in engineering machinery, logistics handling machinery, medical machinery, video surveillance, high-altitude operation machinery, agricultural machinery, and other fields. The main function of industrial joysticks is to convert human mechanical actions into electrical signals, achieving human-machine control. The common types of industrial joysticks are classified as follows: 1、 According to the classification of the contact parts between the handle and the operator's hand, industrial joysticks are generally divided into two types: fingertip type handles and grip type handles. Special models such as TW series (finger wheel) and RS series (rotary) are not introduced here due to their limited application. 1. Fingertip handle: Mainly operated with fingers or fingertips, often referred to as a small handle, abbreviated as a "fingertip handle". Our FJ1, FJ3, FJ9S, FJ6, etc. are all finger tip handles. Our company is named with the prefix FJ, with "F" being the initial letter of "Finger" in English and "J" being the initial letter of "Joystick" in English. 2. Grip type handle: As the name suggests, grip the handle with the palm or palm of the hand for operation, usually a large handle; Abbreviated as "grip type handle". The typical representative is HJ60, while others such as HJ30, HJ20, HJ10, HJ8, HJ5, HJ70, HJ80, etc. are all grip type handles. Our company is named after HJ, with "H" being the initial letter of "Hand" in English. 2、 According to the reset method, it is generally divided into two types: self reset handle and friction positioning handle. 1. Self resetting handle: In the operation process, when the handle is released, it will automatically return to the starting position, usually returning to the middle position, and very few products have unilateral reset. Its implementation method is generally based on the spring principle. In our product series, most products are self resetting handles. 2. Friction positioning handle: that is, during the operation process, when the handle is released, the handle stops at the released position. Its working principle is achieved through friction damping between the moving and fixed parts to achieve stop and stop operation. Our company has fewer friction positioning handles, which are generally used in conjunction with tactile structures. In our product series, only the HJ5 series is a pure friction positioning handle. HJ20, HJ21, HJ50, etc. have friction positioning functions;

Classification and typical application of industrial operating rods

The electronic control handle is classified into Hall voltage output handle, potentiometer output handle, wide voltage/current output handle and digital bus output handle according to the output signal. Hall voltage output handle, with an output range of (0-5V), it is generally recommended to choose the output range of (0.5-4.5V). Therefore, when the handle is open circuit or short circuited, and the voltage output becomes "0V" or "5V", the control system can directly determine the handle error, thereby avoiding safety accidents. Potentiometer output type, the output range can be adjusted according to the customer's requirements based on the customer's power supply voltage. Wide voltage/current output handle, specifying input voltage (wide voltage 9-36V input), output voltage or current. Adjust the required output according to the customer's circuit load. The digital bus output handle transmits data signals through bus interfaces (CAN, USB, etc.), and more and more electric control machinery is using this method for signal transmission.

What are the advantages of electronic control industrial operating rods?

The development of hydraulic operating rods has a history of over 80 years, with mature products and standardized and serialized components. Compared to manual operating rods with complex and massive structures, hydraulic operating rods have small size, light weight, and can achieve large-scale stepless speed regulation. They have stable transmission, strong anti-interference ability, and good low-speed performance. However, correspondingly, the hydraulic operating rod has low efficiency, high heat generation, and cannot achieve constant ratio transmission, posing a potential leakage hazard. Additionally, the hydraulic oil inside is flammable and explosive, which goes against the increasingly strong demand for safety and environmental protection. So, with the development of technology, hydraulic operating rods are gradually being replaced by another type of operating rod, which is the electrically controlled industrial operating rod. The electric control industrial control lever was initially applied to the control of large high-end equipment such as airplanes and ships. In the 1960s, high-altitude work platforms emerged in the United States. Due to the fact that the distance between the control platform and the driver of the high-altitude work platform (about 50-60 meters) is much greater than that of general engineering machinery, the hydraulic operating rod cannot stably output control. Therefore, the high-altitude work platform adopts mechatronics and hydraulic integration technology, and applies electric control industrial operating rods in the control system. By 1985, in order to save energy, many excavator manufacturers began using electromechanical and hydraulic integrated control systems in mass production excavations. With the popularization of digitization and higher requirements for environmental protection, more and more engineering machinery also began to use electric control industrial operating rods. Recommended high-altitude operation handle Compared to hydraulic operating rods, electric control industrial operating rods can set a safe range to achieve remote control and continuous control. The electric control handle has low requirements for operators, high control accuracy, high response speed, and a linear relationship between input and output. Moreover, the electric control handle can output voltage, current, or digital signals according to customer requirements, making it easier to apply to intelligent operations. At the same time, with the development of chip technology and electronic control handle design, the electronic control industrial control lever has been able to get rid of the interference of temperature and electromagnetic interference on the output signal, and the electronic control handle will undoubtedly shine in more fields.

What are the factors that affect the service life of industrial operating rods?

The industrial control lever, also known as the industrial handle, is an important accessory for engineering machinery to achieve its operational functions. With the further development of science and technology, customers' demand for industrial operating rods is becoming increasingly refined. From the original single handed single operation to a single handed multifunctional integrated operation mode. There are also various forms of industrial handles. Industrial operating rods are often used in the control system of hydraulic equipment, and industrial handles play a role in hydraulic proportional control by controlling proportional valves or directly controlling variable frequency motors. With the development of technology, hydraulic equipment has been widely used due to its high energy consumption compared to electrical transmission, flexibility and strong flexibility compared to mechanical transmission. The electric control handle is an effective means to achieve the combination of electricity and hydraulic. While fully utilizing the hydraulic characteristics, it can achieve strong maneuverability, high safety and reliability, and good economic benefits, which have been vigorously promoted. What factors affect the service life of industrial operating rods? The following applies to the electronic control handle- 1、 In terms of electric control handle structure The electric control handle leather sleeve is exposed year-round and is prone to damage due to environmental factors, resulting in foreign objects entering the interior of industrial handle products, causing jamming and poor operation; Long term movement of structural components can easily lead to structural wear, oil leakage, and abnormal data; 2、 Electrical aspects of the electronic control handle Abnormal electrical performance caused by oxidation or damage of connectors; 3、 Damage to industrial operating rods in special environments When industrial operating rods are used in special environments such as dust and sea for a long time, their lifespan will be significantly reduced. Mainly reflected in the fact that dust can cause the grease to harden and fail; Seawater can cause materials to rust, etc. 4、 Human factors Improper protection during transportation can also cause damage to industrial operating rods. The operator's failure to follow the operating requirements and improper use can also cause damage to the industrial operating rod.