The system is also an important consideration. 51GJ20002126 Bidirectional Impedance Control For long-distance operation of excavators, human actions and sensory functions are performed when the machine is operated at a long distance. That is to say, the used machine is used as a tool to distinguish the operational relationship between the driver's operation master control and the actual machine, thereby obtaining operational transparency. This article describes bidirectional hybrid long-distance operations and their operational transparency. In order to adapt to various hard and soft environments, the method of automatic adjustment of main and auxiliary auxiliary impedances is described. We also introduced the strength analysis of forged parts of hydraulic cylinders for excavator hydraulic excavator 620002127 on a small excavator, and Hida 3 large technical reports. The finite element method is used to analyze the stress distribution of a hydraulic cylinder with a trunnion for an excavator. Improve the stress concentration of the trunnion and cylinder. Each time the improved parts were sampled, analyzed, and accelerated load tests were performed to find out how to make further improvements. To achieve the strength of the stress state of the actual machine parts with less processing times, it is ensured that the cycle time for designing the parts is short and the cost is low. The 12-parameter 1GJ20002128 digital control assistant for hydraulic excavators uses a digital control system for the driver's operation machinery, a digital-to-analog converter is set in the control system, and tests are performed on a backhoe excavator. The test analysis shows that the control system can meet the operation control conditions of the excavator's operation and is very effective in improving the movement trajectory and the accuracy of the walking route. 12 Reference 19GJ20002129 The use of hydraulic excavators, Law JumJP. MinesCarr. In the past ten years, large-scale excavators 5130 and 5230 have been used in open pits and quarries, and their bucket capacity and operating capacity have been greatly increased. The hydraulic excavator's mobile loading ability can compete with the loader, and it can replace the original wheel loader scraper in combination with the mine car. French Ding, the job site has been using large hydraulic excavators. 9 Nanying 0200021300 Renmin Company's new small construction machinery, Ding Company launched a new type of small construction machinery products. The power is below 100 hp, and a variety of work devices can be replaced. In addition, the parts used are intended to be universal and ready to be a series of products. 6 The GJ20002131 Automatic Excavator Travel Sensing Cylinder Open Measurement System is a parent workstation that includes a Hall 1 sensor and detection device. In order to make the measurement system more accurate, a new slip model control was introduced. The measuring device analyzes the signal from the Hall sensor and finds the distance between the Hall sensor and the piston rod. Inductive stroke cylinders are designed based on the measurement results. 204 Reference 10GJ20002132 Introduction to Adaptive Control of Heavy-Duty Shovel Soil Transport Machines Trial-based computer control of closed-loop systems was performed on typical backhoe-type backhoes. This kind of backhoe working device has great changes in its dynamic performance inertia force due to changes in working posture. Therefore, an adaptive control algorithm is introduced to correct the control parameters so as to maintain the continuity of performance. The performance of the hydraulic piston control with this closed-loop system electro-hydraulic servo valve is compared with the previous error feedback control, and the new system is more advantageous. Reference GJ20002133 Acceleration Performance Summarization of Hydro-mechanical Composite Rod Systems with Redundant Degrees of Freedom, Speech Proceedings of Japan's Remaining Sea Oil Oil Air Pressure Lectures. 1998.7072 020002134 Stereo-mechanical measurement using actual buckets, Ryoka Yamamoto Japan Society of Mechanical Engineering In order to measure the distribution of the frictional stress on the wall surface pressure of the actual excavation resistance on a bucket, sensors were installed and the three-dimensional measurements were made. Mechanical quantity, while observing the damage and deformation of excavated soil. To reduce the interface friction when the bucket touches the soil. The use of a material with a low coefficient of friction and the use of a forced vibration = material with a low coefficient of friction at the same time is extremely effective in reducing excavation resistance. 12 Reference 7 620002135 Hydraulic excavator rod trajectory control Using disturbance observers to study the effectiveness of control sinks, Nie Kobayashi Hideaki Air Compressor Lectures lecture series. 19987678 0120002136 Development of Circular Excavation Bucket for Excavating the Foundation of Power Transmission Tower, Nori Nori, China Electric Power Corporation, Giken Times. 1998, 91.9195 Excavator bucket excavating the foundation of transmission towers Although it is possible to excavate the center of the circular foundation, there is a lot of residual soil in the area where the periphery contacts with the retaining bracket. In order to reduce manual work and improve excavation efficiency, the 360-spindle bucket sold in the market is adapted to a shape suitable for round excavation. 6 Canada's walking excavator magazine, the wheels of this wheel are independent and can walk and tilt and are equipped with excavating grapples in the driving position. The wheels are made of soft rubber and can be easily crossed when the ground is uneven or there are obstacles. This kind of excavator can also be used for poor ground conditions such as river repair work. 5 GJ20002138 Hydraulic Excavator Adaptation Axis Control Publication, Hydraulic Excavator Adaptation Axis Control is mainly used to drive the boom cylinder and bucket cylinder. On this basis, the complex motion process is automated, reducing the operator's strength. The control adaptation method developed was tested and installed on the Komatsu hydraulic excavator 045. 12 Participation 12GJ20002139 due to close cooperation with the company. The 56å©6,86 company that manufactures Laji excavators and cranes has developed a digging deep 6080 Yang dragline excavator with special structure and bucket capacity. The structure transmission and noise reduction measures of the excavator were introduced. 1 620002140 The development journal of a super large mining hydraulic excavator was introduced. Yukihiko Uisaki 7.7, 7 introduced the hydraulic oil circuit operation control circuit of the large hydraulic excavator. Oil cooler drive and piping. The working quality of the machine 515 bucket capacity 2713, general operation cycle 3,5. In order to improve the response of the valve when switching performance, developed 0 sen 1 foot 6501 dual fast response valve = introduced a horizontally arranged backhoe excavator engine cover structure. The engine hood is provided with a cooling air circulation chamber and a radiator device. 2 Construction excavators, 19704319 Since the wheel excavator can run on the street without restrictions, it is widely used in construction projects. But on the weak and soft ground. Their passage has a lot of inconvenience. In addition, when the bucket load is too large, the wheel of the excavator will drastically collapse. Limit the bucket load. This patent replaces the wheeled excavator with a tracked chassis, which maintains the superiority of the wheeled excavator and overcomes its shortcomings. GJ20002143 Excavator Stick Lift Limit System This article describes the research results of the trajectory program for the cutting edge of a bucket excavator bucket. The result of this research is a summary of the procedures obtained after the movement trajectories of various excavators. 5GJ20002145 hydraulic excavator walking control mechanism Magic, patent proposed hydraulic excavator walking control mechanism. The mechanism includes a hydraulic pump with adjustable engine speed and a hydraulic motor. Control valve systems and sensing elements to ensure a given work specification. 2GJ20002146 single-bucket excavator window block 082314577 special, English 6315 this 6 port 61 proposed single-bucket excavator with backhoe loader cab front window of the window block structure. The large glass of the right-angle plane is embedded in the metal frame and the side is equipped with a slidable roller support. The initial section of the roller guide is curved or slanted, with the remaining sections running parallel to the upper part of the cab. When the window is closed, the frame clings to the elastic trim. The lower part of the window frame is provided with a handle. If necessary, the handle can be operated to lift the window upwards. The entire window block is parallel to the outside edge of the cab. The feature of this structure is that the window can be fixed in any position, leaving both window seams and windshields. The structure of the window block and its parts is introduced. 8GJ20002147 hydraulic excavator working device, patent recommended working device fixed on crawler hydraulic excavator stick. The device is used directly for digging soil and smoothing. The structure of the device is described. 7 Gonggong bucket excavator GJ20002148 bucket wheel excavator tape deviation analysis, Zhongye Yuehai construction machinery. 1999, 309.68 discusses the advantages and disadvantages of picking up the idler roller group on the belt conveyor of the bucket wheel excavator and the effect on the deviation of the tape, and proposes the measures taken to prevent the deviation of the bucket wheel excavator tape. Senate Teng Trencher Trencher 020002149 The installation of the disk cutter for rock tunnelling machines and the calculation of lateral slippage, Zhong Zhang Zhaohuang Construction Machinery. 1996,6.4849,54 Full-section rock tunnel boring machine vibration noise in the rock-breaking work The multi-angle wear and low life of the disk-shaped hob are closely related to the actual movement of the disk hob. Based on the analysis of different rock-breaking experiments of disc-shaped hobs, the concept of disc-shaped hobbing was proposed. Through the discussion of the installation method of disk-shaped hob, the calculation method of the side slip amount when the disc-shaped hob is rock-breaking under various installation methods is deduced. 31 Fukuyama No. 020002150 Determination of Pushing Pressure of Propelling Cylinder for Full-face Tunnelling Machine, Zhang Zhongjun, Construction Machinery. 1999,308.910 When the full-face tunnelling machine works, the movement is mainly composed of advancing movement of the propulsion hydraulic cylinder to push the fuselage and rotation of the rotary motor driven by the cutter head. The pushing pressure of the boring machine to propel the hydraulic cylinder is the main design parameter for determining the number of hydraulic cylinders and the size of the hydraulic cylinder for the boring machine, and is also the basis for determining the thrust of the boring machine. In this paper, the commonly used hydraulic cylinder push pressure formula is revised. 4 TENDA GJ20002151 Vertical trencher with variable helix spiral cutting device. 85,586,399, British patent for the kind of hanging on the hydraulic excavator boom arm trencher structure. The cutting device is a drum with a cantilever mounted on the base. Its hub is equipped with a supporting thrust bearing set. The drum has two rows of teeth on the lower wheel for auger. Such a suspension unit can expand the production capacity of the excavator. 4 Huang Xinsheng Earthworks Operation Process and Control System
ABS plastic,full name acrylonitrile–butadiene–styrene copolymer,
Acrylnitrile butadiene Styrene copolymer has a good thermal and dimensional stability and high impact strength(also at low temperature).It is strong,shows a good scratch resistance and has a good dimensional stability .ABS Plastic can be used in temperatures ranging from -50'C to +70'C .it mainly have ABS SHEET,ESD ABS SHEET,FIREPROOF OF ABS SHEET,ABS+PC SHEET.
Classification:
ABS plastic according to impact strength can be divided into: ultra high impact type, high impact type, medium - resistant type and so on;
ABS plastic can be divided into: injection, extrusion, pressure delay, vacuum and blow molding.
ABS plastic can be divided into: general grade, heat resistance grade, plating grade, flame retardant grade, transparent grade, anti-static, extruding plate and pipe grade, etc.
Advantages:
1.Good mechanical strength, high impact strength
2.Resists scratching, Excellent abrasion resistance
3.Good electrical properties, moisture and creep resistance
3.High dimensional stability, good luster
4.Good chemical and stress cracking resistance to inorganic salt solutions, alkalis and many acids(strong oxidizing acids is a exception).
Disadvantages:
1.Endurance in water ,endurance in corrosion of inorganic salt. But not endurance in organic solvent.
2.ABS Plastic is easily to cracked by the effects of the organic solvent.
3.Poor weather resistance, easily to change color and become brittle because of the sunlight.
Application:
1. Electronics & electric appliances: antenna socket, coil former, wiring board, convertor, speaker,connector, and other parts;
2. Food industry parts;
3. Building model, model mockup;
4. Electronic industrial parts, freezer and refrigeration industry;
Notes:
1. ABS Plastic is strict requirements for flame retardant grade ABS to prevent the decomposition of flame retardants.
In the start of the power, the cartridge should be cleaned with general grade ABS plastic and then processed.
(point to stop for more than 20 minutes before the downtime), on the one hand must cut cylinder temperature below 100 ℃, on the other hand must be emptying the material inside the cylinder, and general level ABS cleaning cylinder rear can stop.
The purpose is to make flame retardant ABS not decomposed.
2. The use of reworked material for primary or secondary sex thousand net, without impurities, no decomposition of ABS plastic reworked material, can be used directly after crushing, also can mix with the new material, the mixing ratio is generally not more than 25% of the new material, so as not to affect performance.
For more than 5 times more than 5 times or adding the fresh material with colorant, generally not mixed with the new material, mainly to prevent the color difference.
ABS Plastic must be dried and processed in accordance with the regulations, whether it be separately regenerated or mixed with new materials.
Combustion characteristics
Specification: the diameter of the ABS Plastic rod can be produced from 2mm to 250mm. The conventional length is 1000mm, and the length is unlimited.
The thickness of ABS Plastic sheet material can be produced from 0.3mm to 1.9mm, the normal width is 600mm, the width cannot exceed 1200mm, the length is not limited.
The thickness of plate can be produced from 2mm to 180mm, the usual specification of 2-10mm is 1000mm* 2000mm, and the commonly used specification of 10-180mm is 600*1200mm. ABS Plastic can also be customized according to requirements, and the width cannot exceed 1200mm, and the length is not limited
Color: beige or white, can also be made black and color, and the color order is 500KG.
Modified varieties:ABS Plastic can be added to the fiberglass, copper powder and molybdenum disulphide to enhance the bar.
Add antistatic agent to the permanent antistatic electric bar, and the volume resistance value is between 6 to 9 power of 10.
Add flame retardant to flame retardant rod from UL 94V-0 to HB flame retardant grade. Other modification requirements are customized according to customer's actual use.
Product certification: ABS Plastic most environmental certification reports and safety reports for raw materials, such as SGS report, CTI report, UL report, MSDS safety information, etc.
ABS Plastic Sheet,Antistatic Styrene Plastic Sheet,Esd ABS Plastic Sheet,Fireproof ABS Plastic Sheet Dongguan Noegem Plastic Products Co.,Ltd , http://www.noegempLastic.com