The development of scrapers has a history of hundreds of years. The shovel includes wheels, traction beams, frame, hydraulic device, bucket with soil shovel mechanism, support mechanism and frame lifting adjustment mechanism. Let's share its safe operating procedures and performance parameters together.
1. Safety regulations of scraper
1. Preparation
(1) Check the safety hazards on the working surface and the smoothness of the road, and deal with any problems in a timely manner.
(2) Check the oil level of the oil tank of the hydraulic system, not lower than the oil mark.
(3) Check whether the lubrication condition of each lubrication point is good.
(4) Check whether the brake fluid and tire pressure are sufficient, and whether the rim is loose.
(5) Check whether the cable fixing place is firm and the ground wire is intact.
2. Driving operation
(1) Check whether the operation handles are in the normal position, and then close the main switch after confirming that they are correct;
(2) After turning on the power, be sure to notify the people around the scraper to evacuate to a safe area, and then start the scraper;
(3) After starting, check whether the meter reading is normal, whether there is abnormal sound in each part, whether the brake is reliable, and whether the hydraulic system leaks oil.
(4) Drive carefully, especially in narrow sections of the road or in sharp corners, you should drive slowly and at low speed. It is strictly forbidden for the shovel to collide with the pillars or side edges on both sides.
(5) During the entire shovel loading process, the bucket lever and acceleration mechanism should be used reasonably so that all tires are in operation to prevent skidding or idling.
(6) When the scraper moves backward, the angle between the axis of the fuselage and the discharged drag cable should be less than 90 ° C. When moving forward, the remaining cable on the drum should be more than 3 turns to prevent damage to the cable or pull off the slip ring .
(7) When going uphill or downhill, the bucket end always points to the bottom of the slope. When the situation is dangerous, the bucket can be lowered to help stop the scraper.
(8) In case of failure or bandage of cable interface, first disconnect the main power supply, and it is strictly forbidden to operate without power.
3. At the end
(1) Stop the scraper in a safe place where there is no turquoise, no dripping, no collapse of the patio, no blasting operations, etc.
(2) Reset each joystick, put the boom to the bottom, and the bucket will turn over and touch the ground.
(3) Put the parking lock in the locked position.
(4) Turn off the power switch and the main power switch on the vehicle. Park the scraper on level ground, if it is parked on a slope, wedges the wheels with triangular wood or stones.
(5) When dragging the scraper, a safety chain or steel wire rope should be added in addition to the normal towing or lever. When driving for a long distance, the drive system must be disconnected.
The active shovel has a lower grounding pressure than the ground and can achieve in-situ steering. In the muddy and swampy areas with harsh climate, narrow site and poor geological conditions, it can achieve all-weather, continuous and efficient operation, with good reliability and adaptability. The machine uses the shovel to cut the soil and load the crushed soil into the bucket for transportation and unloading and leveling. An active shovel is equivalent to a common excavator, a bulldozer and two loading trucks in a unit time workload.
The best machinery for large-scale earthwork transfer. It is a multi-function shovel that integrates soil shoveling, shoveling, loosening, pushing, and unloading. The shoveling distance is within 2000 meters. It can be widely used in construction, airport construction, mining, water conservancy and hydropower.
Active multi-function crawler scraper is its full name. It adopts advanced electronic control, power transmission system, electro-hydraulic control variable speed control system, electro-hydraulic control steering brake system and automatic unloading hydraulic pilot control system, etc. Excellent performance and easy operation; super-structured design frame is suitable for heavy-duty engineering operations; fully hydraulic wet steering brake system makes the machine more flexible and efficient when working; specially designed cab with reasonable layout and wide view 3. Comfortable operation.
2. Operation procedures of scraper
Four steps for one person, one machine:
Soil loosening-loading-transportation-dumping
1. Loose soil
Set the bucket to the desired depth and shovel the earth to be moved.
2. Loading
The bucket is loaded with earth by the advancing device. Depending on the size of the machine, the shoveling distance can be 25-40 meters. This process takes 24-40 seconds.
3. Transportation
Lift the bucket full of earthwork. The machine drove to the place where the earth was dumped at a speed of 20 kilometers per hour.
4. Dump
The earthwork is pushed out of the bucket through the hydraulic rear wall and emptied. The stacking methods are as follows:
1) Spreading operation
The machine stacks the earthwork to the required thickness in a forward or rounded manner, and will not cause obvious compaction by the track.
2) Underground operations
Regardless of local or designated location operations, the height of the earthwork dumped at one time can be up to 2 meters.
3) Slope operation.
The earthwork can be placed upside down directly on the slope.
4) Bulldozing work
The use of bulldozers is particularly suitable for short-distance work such as road construction, leveling the land and large-scale earthwork transfer.
Based on the introduction of foreign advanced technology, the active multi-function crawler scraper has implemented a full range of technological innovations, focusing on the use of two-stage combustion and low-pollution air-cooled starting technology, power shift transmission technology, and single-path stable split steering technology It not only realizes the whole machine technical innovation of the transmission structure and walking mode, but also realizes the remote control within the line of sight, which greatly improves the working efficiency of the equipment. The successful development of active scrapers is a new milestone in the development history of scrapers.
