1. Capstan use tractor PTO shaft driven winch dozer lift. Winch winch lifting mechanism generally consists of front and rear mounting bracket, pulley group and the control mechanism and other components. Tractor PTO shaft through the body of the winch gear drive winch with a friction clutch, and some are using worm gear winch drive. Capstan main features are as follows:
(1) manufacturing process is relatively simple, reliable transmission.
(2) by weight dozer buried, complex structure, large weight.
(3) rapid dozer lift, lift height great.
(4) wear parts are more easily damaged wire rope, hydraulic operation is not flexible and can not be forced to be buried.
2. By farm tractor hydraulic dozer and configure a set of hydraulic lifting control system, the use of hydraulic control dozer lift.
-Cylinder hydraulic lifting mechanism bulldozer is currently developing models. Using single-cylinder hydraulic lifting mechanism is put back in the original tractor hitch hydraulic cylinder to move the front of the motorcycle, driven by a lever transmission mechanism dozer lift. The main features of hydraulic bulldozer as follows:
(1) can be forced dozer buried, can push more rigid shovel soil.
Compact (2) structure, light weight, saving steel, better operating performance, easy to manipulate.
(3) the hydraulic system of pumps, tanks, dispensers and other high technology manufacturing requirements.
(4) dozer lift slower, usually 0.15 to 0.35 m / sec. In winter, the hydraulic oil thickens flow slows down, lifting more slowly.
myw
2015年3月31日星期二
2015年3月28日星期六
Bulldozer by walking device classification
1. Tracked by crawler dozer tractor configuration and upgrade the operating mechanism constitutes the main features are as follows:
(1) large adhesion can give full play to the tractor driving power. Usually equal to 1.5 times the horsepower wheeled tractors.
(2) through the good. Ground Pressure Wheel smaller than for soft soil and wetlands in the job.
(3) climbing ability, generally 20. Can cross the slope slope about jobs, farmland suitable for mountain earthwork construction.
(4) metal consumption more generally consume more material than metal wheel dozer 50-60%.
2. Wheel by wheel dozer tractor configuration and upgrade the operating mechanism constitutes the main features are as follows:
(1) travel speed, mobile. However, when the soil hard work, shoveling deep instability.
(2) economic transportation distance is shorter than the length of crawler twice about the job cycle time. Four-driven crawler ratio of 1.5 times and high productivity.
(3) travel system structure is relatively simple, life 2-3 times longer than the crawler.
(4) consumes less metal. Two driven poor adhesion properties, the job is often due to tire slippage, affecting tractor driving power play.
1. Tracked by crawler dozer tractor configuration and upgrade the operating mechanism constitutes the main features are as follows:
(1) large adhesion can give full play to the tractor driving power. Usually equal to 1.5 times the horsepower wheeled tractors.
(2) through the good. Ground Pressure Wheel smaller than for soft soil and wetlands in the job.
(3) climbing ability, generally 20. Can cross the slope slope about jobs, farmland suitable for mountain earthwork construction.
(4) metal consumption more generally consume more material than metal wheel dozer 50-60%.
2. Wheel by wheel dozer tractor configuration and upgrade the operating mechanism constitutes the main features are as follows:
(1) travel speed, mobile. However, when the soil hard work, shoveling deep instability.
(2) economic transportation distance is shorter than the length of crawler twice about the job cycle time. Four-driven crawler ratio of 1.5 times and high productivity.
(3) travel system structure is relatively simple, life 2-3 times longer than the crawler.
(4) consumes less metal. Two driven poor adhesion properties, the job is often due to tire slippage, affecting tractor driving power play.
2015年3月25日星期三
1. Fixed
Fixed dozer tractor fixed at right angles to the longitudinal axis. The main features are simple in structure, easy to manufacture, durable, and low cost. General agricultural bulldozer dozer device mostly with fixed soil knife blade angle majority can be adjusted to control the depth of soil shovel knife easy job, usually in the back of the site is also fitted dozer limited slip deep dish, so dozer can control certain soil depth cut jobs, prevent soil cut too deep causing overload or stall.
2. Rotary
Rotary cut soil bulldozing eradicate angle can be adjusted, but also rotation angle in the horizontal and vertical directions, for lateral transverse slope bulldozing and bulldozing. Its main feature is that in the ravines, complex terrain depression sudden ups and downs still has good adaptability, but not too small rotation angle (horizontal rotation angle greater than 25 ° a 30 °, vertical rotation angle should not be less than 10 °, otherwise, would not achieve the thrusters and transverse push effect adjustment mechanism is more complex due to the rotation, ramp operations, is inclined blade, blade withstand lateral pressure in Incline when large, easy to swing and cause locomotive deviation. To continue to pull to manipulate the joystick manipulation more difficult. At present, the project uses more rotary bulldozer dozer device, while still stationary agricultural bulldozer bulldozer majority.
Fixed dozer tractor fixed at right angles to the longitudinal axis. The main features are simple in structure, easy to manufacture, durable, and low cost. General agricultural bulldozer dozer device mostly with fixed soil knife blade angle majority can be adjusted to control the depth of soil shovel knife easy job, usually in the back of the site is also fitted dozer limited slip deep dish, so dozer can control certain soil depth cut jobs, prevent soil cut too deep causing overload or stall.
2. Rotary
Rotary cut soil bulldozing eradicate angle can be adjusted, but also rotation angle in the horizontal and vertical directions, for lateral transverse slope bulldozing and bulldozing. Its main feature is that in the ravines, complex terrain depression sudden ups and downs still has good adaptability, but not too small rotation angle (horizontal rotation angle greater than 25 ° a 30 °, vertical rotation angle should not be less than 10 °, otherwise, would not achieve the thrusters and transverse push effect adjustment mechanism is more complex due to the rotation, ramp operations, is inclined blade, blade withstand lateral pressure in Incline when large, easy to swing and cause locomotive deviation. To continue to pull to manipulate the joystick manipulation more difficult. At present, the project uses more rotary bulldozer dozer device, while still stationary agricultural bulldozer bulldozer majority.
2015年3月22日星期日
Bulldozer frame by welding tank and rear axle group formed legs, two different production processes, in order to avoid damage to the film set of welding, to take on the rack after the group carried out the bottom one to the finish of the paint, film effect, more than 85% gloss, adhesion to a meet quality requirements appearance.
Bulldozer trolley is finish the most difficult part of the implementation, because the trolley welding, paint after painting the bottom one processing step there, take in the processing of rubber underside shop, take a non-clamping position outside appearances, processing is completed After cleaning cutting fluid increases, up painting process to ensure that car appearance. Currently assembled components to achieve the finish of 30 bulldozers, painting, assembling efficiency increases, inventory enhanced corrosion resistance, the whole appearance quality dramatically.
Bulldozer trolley is finish the most difficult part of the implementation, because the trolley welding, paint after painting the bottom one processing step there, take in the processing of rubber underside shop, take a non-clamping position outside appearances, processing is completed After cleaning cutting fluid increases, up painting process to ensure that car appearance. Currently assembled components to achieve the finish of 30 bulldozers, painting, assembling efficiency increases, inventory enhanced corrosion resistance, the whole appearance quality dramatically.
2015年3月19日星期四
In recent years, the overall level of domestic bulldozers have been greatly improved in appearance, noise control, mechatronics applications, powertrain optimization, application and overall comfort, reliability, and hydraulic control system of the new technology and other aspects of foreign advanced level there is a large gap.
(L) Product Reliability
China's construction machinery Mean time between failures (MTBF} by the 1980s to the current nearly 100h 300h, crawler bulldozer MTBF of 470h,, up to 1000h, most of the foreign construction machinery in more than 1000 h maximum of 2000h foreign crawler dozer models 147 k} V below the average life of 10000 h, 147k} V models over the average life of 2}. (x 0}, the same type of products the average life less than its l / 2oo. Therefore, reliability is the most important issue of the industry.
(2) the level of technical performance
Domestic bulldozer on handling, comfort, energy efficiency, noise, pollution, construction quality and productivity and other indicators have lagged behind the world advanced level, in many advanced technologies, structures, materials and technology there is a big gap, inadequate control technology mainly in microelectronics applications, hydrostatic transmission technology applications and electro-hydraulic servo control technology applications for further study and improvement of automatic leveling technology is based on C Xing global positioning systems, laser, ultrasound and other precision auto-leveling technology push Application of soil technology needs further promotion and application.
(L) Product Reliability
China's construction machinery Mean time between failures (MTBF} by the 1980s to the current nearly 100h 300h, crawler bulldozer MTBF of 470h,, up to 1000h, most of the foreign construction machinery in more than 1000 h maximum of 2000h foreign crawler dozer models 147 k} V below the average life of 10000 h, 147k} V models over the average life of 2}. (x 0}, the same type of products the average life less than its l / 2oo. Therefore, reliability is the most important issue of the industry.
(2) the level of technical performance
Domestic bulldozer on handling, comfort, energy efficiency, noise, pollution, construction quality and productivity and other indicators have lagged behind the world advanced level, in many advanced technologies, structures, materials and technology there is a big gap, inadequate control technology mainly in microelectronics applications, hydrostatic transmission technology applications and electro-hydraulic servo control technology applications for further study and improvement of automatic leveling technology is based on C Xing global positioning systems, laser, ultrasound and other precision auto-leveling technology push Application of soil technology needs further promotion and application.
2015年3月16日星期一
2015年3月13日星期五
Domestic bulldozer on handling, comfort, energy efficiency, noise, pollution, construction quality and productivity and other indicators have lagged behind the world advanced level, in many advanced technologies, structures, materials and technology there is a big gap, inadequate control technology mainly in microelectronics applications, hydrostatic transmission technology applications and electro-hydraulic servo control technology applications for further study and improvement of automatic leveling technology is based on C Xing global positioning systems, laser, ultrasound and other precision auto-leveling technology push Application of soil technology needs further promotion and application.
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