For the classification and function of the Caterpillar excavator bucket, let's listen to Babington, technical engineer of A&S Bucket Teeth Co., Ltd. Technical Department.
The Carter excavator bucket is divided into a backhoe bucket and a positive bucket bucket according to the working mode. The backhoe bucket is generally used.
According to the principle of its mechanical action, it is divided into a positive shovel, a backhoe, a grab, and a shovel.
According to the different material properties of the structure: divided into standard bucket, reinforced bucket, mine bucket
According to the different functions of the working conditions: divided into earth bucket, rock bucket, loose soil bucket, water bucket, grid bucket, grab bucket, cleaning bucket, inclined bucket, etc.
According to the different mechanical actions, it is divided into a positive shovel, a backhoe, a grab, and a shovel.
The Carter excavator is shoveled at the end of the stick and driven by the oil cylinder. The digging force is from bottom to top during the operation, and the excavation trajectory is often curved, which is suitable for excavating sand, gravel, coal mine and other operations above the stop surface.
Carter excavator backhoe: hinged with the stick link, driven by the cylinder, the digging force from the top to the bottom during the operation, the excavation trajectory is a circular arc, suitable for excavation of the soil layer, sandstone, coal mine and other construction below the stop surface operation.
The Carter excavator grabs a shell-like shape, and uses a liquid cylinder to drive the grab-like shell to grasp the material or the rope roll Yang vertical to cut into the material mechanical grab; generally used in building foundation pit excavation, deep pit excavation and coal, The loading of loose materials such as sand, shovel, gravel, etc., is particularly suitable for digging or loading on one side of a ditch or a restricted space.
The Carter excavator has a shovel shape with a toothed seat and a tooth. During the operation, the bucket is thrown on the excavation surface, the shovel teeth are cut into the soil layer by self-recovering, and then the bucket is pulled by the sling bucket. After the shovel is full, the bucket is lifted by the hoisting rope, and the steering wheel is turned to adjust the unloading point, and the bucket is turned over. Unloading soil. The soil below the stop surface can be dug, but the excavation accuracy is poor.
Carter excavator buckets are classified according to structural material properties: standard buckets, reinforced buckets, and mine buckets.
The standard bucket material is made of domestic high-quality high-strength structural steel Q345B. The standard bucket features: large bucket area, large stacking surface, so it has a high filling factor; saves working time and high efficiency. It is suitable for the excavation of general clay and the light working environment such as the loading of sand, soil and gravel.
The reinforced bucket is made of high-strength and wear-resistant steel materials for high stress and vulnerable parts on the basis of standard buckets. The high-strength and high-strength wear-resistant materials of the toothed seat plate and side blade plate are used. Steel NM360, thickened plate, extending service life. Inheriting all the advantages of the standard bucket and greatly improving the strength and wear resistance. The applicable environment is to carry out heavy-duty operations such as loading of hard soil, gravel and gravel.
Adding reinforcement plates at the bottom of the mine type bucket; adding side guard plates; installing protective plates, adopting a double arc design at the bottom of the bucket to increase the ground clearance of the crotch, reducing wear; adjusting the gap at the joint with the stick Set of equipment; use Swedish HARDOX ultra-high-strength wear-resistant steel to extend the life of the product several times; special tooth for rock with bucket teeth. The product has high reliability, better excavation performance and more economical advantages. Applicable environment: Excavation of hard rock, secondary stone and weathered stone in the soil; heavy work such as loading of rock and post-blasting ore.
Carter excavator buckets are also divided into earth buckets, rock buckets, loose soil buckets, water buckets, sieve buckets, grab buckets, cleaning buckets, inclined buckets, etc. according to the working conditions.
Earth bucket: generally used for excavation of clay and light work environment such as loading of sand, soil and gravel. The bucket has a large area and a large stacking surface, so it has a high filling factor; saves working time and high efficiency.
Rock bucket: used for excavation of hard rock, secondary stone and weathered stone in the soil; heavy stone, loading of ore after blasting, etc. Intensity wear-resistant steel, better excavation performance and more economical.
Loose soil bucket: used for hard soil or frozen soil construction work, generally single or multi-tooth, sharp teeth, easy to break the soil.
Water Ditch Bucket: It is suitable for excavation of various shapes and ditches. Ditch excavation is formed once, no need to trim, and the work efficiency is high.
Sieve fighting: It is suitable for excavating and separating loose materials. It is widely used in municipal, agricultural, forestry, water conservancy and earthwork projects.
Grab: vertical grabbing, suitable for foundation pit excavation of construction foundation, deep pit excavation and loading of loose materials such as coal, sand, shovel, gravel, etc., especially suitable for the side of the ditch or restricted space. Dig or load.
Cleaning bucket and inclined bucket: It is suitable for the trimming of planes such as slopes and the large-scale dredging and cleaning of rivers and ditches. The tilting bucket can change the inclination angle of the cleaning bucket through the oil cylinder, which greatly improves the working efficiency.
Bucket weight, heavy bucket not only will increase the fuel consumption of the machine, but also have a considerable impact on the life of the machine, this loss can not be ignored. Experts have done a study: the weight of the bucket increases by 0.5 tons, the cycle time increases by 10%, and the annual gross profit decreases by 15%, so it is necessary to strengthen the part.
Precautions for bucket reinforcement:
1. Strengthening protection at the root
The severe wear of the edge plates will reduce the effective bucket capacity of the bucket and affect productivity. At the same time, the edge knife also helps to cut the material and protect the edge board, so the bucket needs to be installed with a side knife. Since the sides are not high-wear areas, the side reinforcements need not be too strong to avoid affecting the overall weight of the bucket.
2. It is very necessary to strengthen the bottom plate to strengthen the bottom plate. A&S Bucket Teeth Co., Ltd. suggested that the customer who purchased the new machine should reinforce the bottom plate after the paint of the new machine floor ribs was worn away (about one week). The ribs of the bottom plate should be made of hard and wear-resistant long plates as raw materials, and the overall shape of the bucket should be protected so as not to affect the cutting angle and affect the production capacity. The welding of the ribs should be carried out on the two plates in the direction of the welding of the original ribs.
3. Strengthening the inside of the bucket
A&S Bucket Teeth Co., Ltd. recommends the use of hardfacing for internal reinforcement, albeit at a high price and for a long time. However, its wear resistance and effectiveness are the strongest, or you can choose to apply some reinforcing ribs, not too much. In summary: the strengthening of the bucket should be effective and firm. The last hard surface surfacing can also be used in the reinforcement of other places. In the future, the reinforcement of the bucket should not be arbitrarily posted like a cowhide plaster, nor can it be strengthened too much. It is not advisable to lose productivity in order to protect the bucket. .