[China Instrument Network Instrument R&D] The rapid development of smart devices in recent years has led to higher requirements for smart robots and other devices. Different from the working mode of traditional industrial robots, intelligent robots need more autonomous work capabilities. This requires not only smart robots have better software systems, but also their sensors are more intelligent. Touch sensing is one of them.
Human touch is a highly complex and versatile sensing system. Research on the development of artificial haptic systems with similar functions has received constant attention. Considering the similarity between the tactile action process and frictional motion, tactile sensors based on friction nanogenerators have been continuously studied. These studies mainly focus on sensing in a single haptic domain (such as contact perception, sliding touch, etc.), while human touch is a multi-functional integrated system. In addition, artificial tactile sensors still require more intelligent designs.
Recently, a team led by Professor Wang Zhonglin and Professor Cao Xia of the Beijing Institute of Nano Energy and Systems, Chinese Academy of Sciences, developed a versatile integrated tactile sensing system by combining the advantages of single-electrode and dual-electrode friction nanogenerators. This new multi-functional haptic system combines the advantages of single-electrode friction nanogenerators in the fields of contact and positioning. It also takes advantage of the dual-electrode mode in the field of mechanical motion sensing, achieving contact, relative hardness, and contacts. Location and contact force sensing. The touch sensor has a good linear response to external forces in the range of 40-140N. The contact has a 2mm plane resolution. Relevant results were published in the ACS Nano journal (DOI: 10.1021/acsnano.7b00396). This work not only proposes a method for constructing a multi-functional tactile sensing system, but also further demonstrates the application of friction nano-generators in the field of smart tactile sensing.
(Original Title: Multifunctional Tactile Sensing System Based on Friction Nano Generators)
Excavator Cylinder Piston Rod Seals
Installation and application of piston rod seal for excavator hydraulic cylinder
The installation and application of hydraulic cylinder piston rod seals in excavators mainly include the following aspects:
1. Applying lubricating oil: Before installing the seal, the surface of the piston rod must be coated with lubricating oil to facilitate the installation and use of the seal.
2. Install the seal: Install the seal on the piston rod in sequence, taking care not to pinch or bend the seal.
3. Pressing the seal: After installing the seal, special tools need to be used to press the seal tightly to ensure its tightness and stability.
4. Check the sealing effect: After installing the sealing element, it is necessary to check the sealing effect. It can be detected by observing the working status of the hydraulic cylinder or using tools such as leak detectors.
5. Application scenario: The piston rod seal of excavator hydraulic cylinder is mainly used in the hydraulic system of construction machinery such as excavators, loaders, and bulldozers to prevent hydraulic oil leakage and ensure the normal operation of the machine.
In summary, the installation and application of hydraulic cylinder piston rod seals in excavators is a very important part of the hydraulic system, and must be strictly operated in accordance with regulations to ensure the normal operation and safety of the machine.
Excavator hydraulic cylinder piston rod seal, hydraulic cylinder piston seal, sealing kit
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