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.
2015年3月10日星期二
Appearance and quality of the bulldozer has been largely improved, from design 'welding, paint gloss, adhesion, impact resistance, hardness, weather resistance and other aspects have made great progress in recent years, manufacturing out close to the advanced level of the product, but the traditional old faces have not been completely changed. In terms of design and styling, you must change the traditional ideas, raise awareness of independent innovation, enhance competitiveness and to move closer to the world advanced level.
2015年3月7日星期六
Bulldozer noise is an important factor in their development impact. According to China's national standards, superior product index is not greater than the loader bulldozer noise noise is not greater than 85dB, excavators operating noise is not more than the sound of indicators qualified products decibels higher. According to Japan's national standards, bulldozers, loaders noise index for domestic bulldozer driver ear noise, the vast majority are still in the critical current eligibility criteria, namely 97 ds (A) state, which. With the international advanced level in the gap above, with the domestic construction machinery Other machines have a difference of more than that, this situation makes the working environment has always been very harsh bulldozer driver fatigue easily. The current global environmental advocate, the world bulldozer manufacturers are also taking measures to further reduce noise and vibration, we should catch up, dramatically reducing noise cab driver working to improve the environment, improve our bulldozers to participate in international competition strength.
2015年3月4日星期三
How bulldozer operation safer
(1) bulldozer in hard rock or soil zone uphill work, should be carried out with a ripper blasting or scarifying. In marshes job, replace wetlands dedicated track shoe.
(2) driving a bulldozer through on the job or in their bridge, culvert, dikes, dams, etc., should have the appropriate carrying capacity.
(3) shall not be bulldozed lime dust, soot and other materials and used as crushed stone operations.
(4) Traction other mechanical equipment, there should be someone in charge of directing. Rope should be solid and reliable connection. When the ramp or long distance towing, tow bar connection should be used.
(5) pre-operational projects should focus on checking compliance with the following requirements.
1) no loosening of the components, the connection is good.
2) fuel oil, lubricating oil, hydraulic oil compliance.
3) The system piping no cracks or leaks.
4) Each lever and brake pedal stroke, track or tire pressure tightness meet the requirements.
(6) should be checked after each instrumented value, the hydraulic system should work effectively; When functioning normally, the water temperature reached 55 ℃, the oil temperature reaches 45 ℃, the only full-load operation.
(7) Before driving bulldozers, crawler or non someone standing on the blade holder. Mechanical four weeks should be no obstacle. After confirming it is safe to start.
(8) using the main clutch engagement should be a smooth drive bulldozers, started not too fast, not in the second half of the clutch engaged state operation, the hydraulic transmission of bulldozers, should lift the lever lock state. Depress the decelerator pedal, shift lever should be in a certain position, then slowly release the accelerator pedal level.
(9) When the stone road, should track tensioning. When you need to rotate in place or sharp turns, should be carried out using low gear. When people travel agency folder stone shall be used forward and reverse travel back and forth to make stone excluded.
(10) in the shallow water zone travel or work, you should identify the depth. Do not touch the surface of the water cooling fan blades. Water before and after the water, should be greased for walking devices.
(11) on a bulldozer, downhill or over obstacles when using low gear. Not shift uphill, downhill slide not neutral. Transverse traveling slope must not exceed 100. When you need a dozer on steep slopes, cut and fill should be done first, so that the body to maintain balance, before the job.
(2) driving a bulldozer through on the job or in their bridge, culvert, dikes, dams, etc., should have the appropriate carrying capacity.
(3) shall not be bulldozed lime dust, soot and other materials and used as crushed stone operations.
(4) Traction other mechanical equipment, there should be someone in charge of directing. Rope should be solid and reliable connection. When the ramp or long distance towing, tow bar connection should be used.
(5) pre-operational projects should focus on checking compliance with the following requirements.
1) no loosening of the components, the connection is good.
2) fuel oil, lubricating oil, hydraulic oil compliance.
3) The system piping no cracks or leaks.
4) Each lever and brake pedal stroke, track or tire pressure tightness meet the requirements.
(6) should be checked after each instrumented value, the hydraulic system should work effectively; When functioning normally, the water temperature reached 55 ℃, the oil temperature reaches 45 ℃, the only full-load operation.
(7) Before driving bulldozers, crawler or non someone standing on the blade holder. Mechanical four weeks should be no obstacle. After confirming it is safe to start.
(8) using the main clutch engagement should be a smooth drive bulldozers, started not too fast, not in the second half of the clutch engaged state operation, the hydraulic transmission of bulldozers, should lift the lever lock state. Depress the decelerator pedal, shift lever should be in a certain position, then slowly release the accelerator pedal level.
(9) When the stone road, should track tensioning. When you need to rotate in place or sharp turns, should be carried out using low gear. When people travel agency folder stone shall be used forward and reverse travel back and forth to make stone excluded.
(10) in the shallow water zone travel or work, you should identify the depth. Do not touch the surface of the water cooling fan blades. Water before and after the water, should be greased for walking devices.
(11) on a bulldozer, downhill or over obstacles when using low gear. Not shift uphill, downhill slide not neutral. Transverse traveling slope must not exceed 100. When you need a dozer on steep slopes, cut and fill should be done first, so that the body to maintain balance, before the job.
2015年3月1日星期日
Several construction methods of dozer
l. Downhill bulldozing France
To increase the number and depth bulldozer shoveling earth, improve production efficiency, pushing mounds, backfill the trench, the can be used.
2. Concentrated batches, one push method
The harder the soil, the soil depth of cut is small bulldozer, a small shovel earth, concentrated in batches, and then pushed to the unloading bulk soil area. This method allows the blade to push the number to increase, reduce transportation time and improve productivity.
3. tied bulldozing France
In the formation of a larger area of the construction site, the use of two or three parallel dozer bulldozer. Each bulldozer dozer will generally increase the amount by 20%. When tied dozer, blade pitch of 15 ~ 30cm. Tied for the number of units should not exceed four.
4. Bulldozing a trench method
The first is pushed along over the original slot dozing, soil ridge formed by the previous bulldozing can prevent soil loss, thereby increasing push traffic. This method can be concentrated in batches, use a push method combined.
5. Bevel bulldozing law
The ramp is mounted on the blade holder, and the horizontal axis to form a certain angle bulldozer dozing in the horizontal direction. Generally when trench backfill and no room for parking, use this approach.
To increase the number and depth bulldozer shoveling earth, improve production efficiency, pushing mounds, backfill the trench, the can be used.
2. Concentrated batches, one push method
The harder the soil, the soil depth of cut is small bulldozer, a small shovel earth, concentrated in batches, and then pushed to the unloading bulk soil area. This method allows the blade to push the number to increase, reduce transportation time and improve productivity.
3. tied bulldozing France
In the formation of a larger area of the construction site, the use of two or three parallel dozer bulldozer. Each bulldozer dozer will generally increase the amount by 20%. When tied dozer, blade pitch of 15 ~ 30cm. Tied for the number of units should not exceed four.
4. Bulldozing a trench method
The first is pushed along over the original slot dozing, soil ridge formed by the previous bulldozing can prevent soil loss, thereby increasing push traffic. This method can be concentrated in batches, use a push method combined.
5. Bevel bulldozing law
The ramp is mounted on the blade holder, and the horizontal axis to form a certain angle bulldozer dozing in the horizontal direction. Generally when trench backfill and no room for parking, use this approach.
订阅：
博文 (Atom)