More and more construction machinery equipment is transforming from traditional mechanical hydraulic systems to electronic hydraulic systems, especially the widespread application of CANBus bus, which provides a very good technical platform for the upgrading of construction machinery products and the improvement of work efficiency. For automatic control of equipment such as pavers, graders, excavators, elevators, and cranes, it is necessary to measure the posture of the vehicle itself and the actuator, and safety is also widely valued. For example, the verticality measurement of the mast of a rotary drilling rig and the need to adjust the posture of the entire mechanical equipment itself to achieve a horizontal state before the rig starts working; The lifting angle of the crane boom and the excavation depth control of the excavator both require angle measurement to be controllable.
As a leader in the field of tilt angle measurement, Senther Technology provides various tilt angle sensor products with different measurement accuracies, application scenarios, input/output, and external dimensions for the construction machinery industry, including CANBus bus, RS485, RS232, 4-20mA and other output signals/interfaces.
Measurement and control of excavation depth for excavators and leveling of the chassis
The depth measurement of excavators is achieved by measuring the angles of various components on the arm and obtaining depth data through mathematical calculations. It usually requires measuring the angle data of three points on the arm. At present, there are laser methods used in the market to measure excavation depth, but they are expensive and cannot be widely applied. The use of tilt angle measurement method can significantly reduce costs. The available tilt angle products include: single axis or dual axis (measurement of tilt angle in front, back, left, and right)
Planer control of grader
The angle of the planer blade of a grader usually determines the height of the leveled ground, and precise angle control also determines the flatness of the ground. Therefore, for a grader, the angle of the planer blade is an important parameter that determines the overall efficiency of the equipment. The inclination sensor only needs to be installed on the planer or on other positions that can truly reflect the posture of the planer, without any additional mechanical structures. The operator can set the required ground height and flatness data, and the PLC can automatically adjust the posture of the planer, greatly improving the automation level of the entire mechanical equipment. The available tilt angle products include: single axis or dual axis (measurement of tilt angle in front, back, left, and right)
Drill bit control of hydraulic drilling rig
The posture of the hydraulic drill bit determines the success or failure of the drilling process, or whether the final formed hole meets the requirements of the owner. At the same time, drilling needs to be carried out at a certain angle in the project, and the inclination sensor can easily achieve this requirement. This is to install an inclination sensor inside the drill bit to detect the posture of the drill bit in real time, or measure it while drilling, or measure it when the machine is stopped. The sensor is required to have the ability to withstand large impacts and good reliability. The complex distance technology company can provide single axis or dual axis inclination sensors with various external dimensions and high impact capabilities, as well as azimuth measurement function. This function is achieved through magnetic azimuth sensors or gyroscopes, which may cause horizontal deviation of the drill bit during deep hole drilling. The available tilt or azimuth products include: single axis or dual axis (measurement of tilt angles in front, back, left, and right directions)
Platform control and adjustment of elevators
Usually, for high stroke elevators or lifting equipment, the angle measurement and control of the operating platform are related to the safety of the operator's life. Therefore, it is necessary to measure, control, and alarm the tilting angle of the operating platform and the entire equipment base. The available tilt angle products include: single axis or dual axis (measurement of tilt angle in front, back, left, and right)
Leveling the chassis of the crane and measuring the angle of the boom
There are various models of cranes, which perform a large amount of lifting work around the world every day. Unfortunately, accidents often occur, which may cause the body to tilt or even flip over when carrying heavy loads. Some accidents are severe. There are many conclusions drawn from the investigation of accidents, and a consensus is that most accidents can be avoided if the operator can receive some form of warning before the accident.
To reduce the occurrence of accidents, manufacturers have developed some safety systems: safety load displays, which are mature systems that can monitor changes in the crane in real time. A necessary and critical measurement for the system to function is the Boom Angle, which has a maximum range of 90 degrees (+/-45 degrees). It is measured using an inclination sensor, which is also a typical application area of inclination sensors.
Before starting work, the crane needs to ensure that the entire equipment's chassis is level, which not only ensures safe operation but also maximizes the lifting capacity. This is achieved by using a dual axis tilt sensor to measure the tilt angle of the chassis in various directions, and sending the angle output signal to the PLC to drive the hydraulic cylinder to achieve the horizontal alignment of the chassis. The angle measurement of the crane arm is used to calculate the lifting height and prevent the entire equipment from overturning due to excessive lifting. The available tilt angle products include: single axis or dual axis (measurement of tilt angle in front, back, left, and right)
Measurement and control of verticality of mast for rotary drilling rig/pile driver
The verticality of the mast determines the qualification of the drilling hole, especially for pile drivers. Verticality is an important indicator that determines the reliability of the building. Therefore, how to maintain good verticality or drill at a certain angle is a common problem encountered during the construction process. In the electro-hydraulic control system, a dual axis tilt sensor can be directly installed on the mast to achieve this function. At the same time, the operator can input tilt data through the human-machine interface device of the PLC, and the drilling rig will automatically drill according to the set angle. The available tilt angle products include: single axis or dual axis (measurement of tilt angle in front, back, left, and right)
Application in scalable robotic arms
Scalable robotic arm is a load-bearing machine in the construction industry. Its simple structure, combined with its lifting ability and versatility, as well as its ability to operate without location limitations, make it capable of handling a large amount of work outside the construction field.
A telescopic robotic arm is essentially a small weightlifting machine with a telescopic boom, designed for working on rough surfaces, so it also needs to consider flipping issues. Many manufacturers use filled tires to improve stability, which can be helpful for the problem, but it does not provide an alarm signal and accidents cannot be avoided when conditions are met. Some manufacturers realize the seriousness of the problem and have incorporated security systems into their machines.
There are two factors that can cause the machine to flip over: the posture of the cab and the inclination angle of the boom. These two variables can be easily measured using an inclination sensor. For the attitude of the cab, both the lateral and longitudinal axes need to be monitored, with a typical maximum angle of+/-30 degrees. The boom angle and the boom angle of the crane have the same characteristic influence. In actual loading, as long as the angle changes partially, it is equivalent to a significant change in the load. The relative length of the boom exacerbates this influence, especially when the boom is horizontal or close to horizontal. The normal working range of the suspension rod is 0-90 degrees.
Senther Technology has launched tilt sensors that meet various precision requirements, providing protection for engineering equipment.
Ultra high precision dual axis tilt sensor T223: The T223 dual axis tilt sensor still has high measurement accuracy over a wide operating temperature range. This product uses high-speed microprocessor chips internally to perform linear modulation and temperature compensation on signals. This fully calibrated tilt sensor can be customized with digital outputs such as RS232, RS485, and CAN output signals.T223 is mainly aimed at applications in platform calibration, tower monitoring, flip protection, tilt alarm and other fields. The fast response time and excellent accuracy make this sensor an ideal choice for monitoring mobile platform devices. This series of products has precise signal processing functions, including zero/sensitivity temperature compensation. The built-in high-order filter ensures signal quality and allows the sensor to be used in noisy environments (such as vibration environments). This series of products can adjust the sensor factory settings according to the application environment to provide optimal performance. Installation can also be customized according to on-site installation requirements, including cables and connectors. The sturdy aluminum oxide alloy shell is resistant to oil, grease, and fuel erosion. Therefore, this sensor is highly suitable for outdoor and harsh industrial environments.
