1. Working principle of small wheel loader
Loaders can be divided into power systems, mechanical systems, hydraulic systems and control systems. As an organic whole, the performance of the loader is not only related to the performance of the mechanical part of the working device, but also related to the performance of the hydraulic system and control system. Power system: Loader power is generally provided by a diesel engine, which has the characteristics of reliable operation, hard power characteristic curve, and fuel economy, meeting the loader's requirements for harsh working conditions and variable loads. Mechanical system: mainly includes walking device, steering mechanism and working device.

2. 50 articulated wheel loader loading operation steps
step 1. There are often potential dangers during loading and unloading of small-sized loaders, so be especially careful. When the loader is unloading in a collision, the engine should be driven at a low speed and the machine should be driven at a low speed. 2. Load and unload in a solid and flat place, and keep a certain distance from the roadside. 3. Before loading and unloading the small loader, place a wedge under the tire of the transport vehicle under the inclined ladder. 4. The inclined ladder used should have sufficient length, strength, and width to ensure safe loading slope. 5. Make sure the inclined ladder is fixed and the surfaces of the two inclined ladders should be on the same plane.

Roll dirt off the surface of loader tires. 7. It is forbidden to control the direction on the inclined ladder. If necessary, open the inclined ladder and adjust it before opening. 8. After installation, use wedges to block the loader tires and secure the machine with ropes. When loading a vehicle, you must not step on the brakes or raise your arms next to the vehicle. Unless you are in neutral, you have to step on the accelerator when approaching the car, as the car will slow down. However, your arms still apply the brakes and backhoe to dump the material. Over time, you will become proficient.

3. Loader knowledge
1. How does the loader operate? Any precautions? 1) Before driving and operating, the operator should be familiar with the performance, structure, technical maintenance and operation methods of the loader, and operate according to regulations. 2) It is prohibited to carry passengers except outside the cab. 3) When unloading materials into the vehicle, the bucket must be raised to a height that does not touch the trunk baffle to prevent the bucket from touching the trunk. It is prohibited to cross the bucket from the top of the cab. 4) Use automatic deceleration when going downhill and do not step on the clutch pedal to prevent the car from skidding when the power is cut off.

6) When the loader is operating, no one is allowed to stand in front of it, and no one is allowed to carry people in the bucket while it is moving. 7) During operation, no one is allowed to stand under the shovel arm, and unrelated personnel and other machinery are strictly prohibited from operating and passing here. 8) It is strictly prohibited to use high-speed operation. 9) When the operator leaves the driving position, the bucket must be grounded, the engine must be turned off, and the power supply must be cut off. 2. What are the key points for using a loader? Key points for using a loader (1) Before starting the engine. Check the obstacles on the loader walkway and remove them in time. Pay special attention to iron blocks, ditches and other obstacles to avoid cutting the tires.

4. Which steel material is better for excavator bucket teeth or forklift bucket teeth?
The quality of bucket teeth of excavators and forklifts is better than that of steel, which means that the quality of bucket teeth of excavators is good. The bucket teeth of the excavator are forged from composite steel, while the bucket teeth of the forklift are forged from ordinary steel, so there is a big price difference between the two. The 65Mn bucket teeth of the excavator are the best, but other spring steels can also be used, and almost 45 steel can also be used. The hardness of alloy steel for forklifts is much higher than that of manganese steel, and its wear resistance is also much higher. Manganese can increase the hardness of steel, but it will reduce the plasticity and make the steel brittle, so the bucket teeth are easy to break.

5. What is the working principle of the loader?
The loader shovels, loads and unloads materials through the movement of its working device. The loader working device consists of bucket 1, boom 2, connecting rod 3, rocker arm 4, bucket cylinder 5 and boom cylinder 6. The entire working device is hinged on the frame 7. The bucket is articulated with the bucket cylinder through a connecting rod and rocker arm, and is used for loading and unloading materials. The boom is articulated with the frame and boom cylinder to lift the bucket. The flipping of the bucket and the lifting of the boom are controlled hydraulically. When the loader is operating, the working device should be able to ensure that: when the bucket cylinder is locked and the boom cylinder is raised and lowered, the linkage mechanism causes the bucket to translate up and down or approximately to prevent the bucket from tilting and material scattering; when the boom is at any position , when the bucket rotates around the hinge point of the boom for unloading, the inclination angle of the bucket is not less than 45°, and the bucket can automatically level when the boom drops after unloading.

6. What are bucket teeth and picks?
They have different functions and support mechanisms. Bucket teeth are used on excavators, while pick teeth are typically used on shearers, roadheaders or rotary excavators. The pick on the tunnel boring machine is the pick. Rotary drilling rigs generally use soft strata such as sand, mud, and soil. Hitting with bucket teeth will make the bucket teeth enter faster and not cause too much wear. If it is a weathered layer, rock layer or pebble layer, it is made with a rotating pick, also called a bullet, with an alloy and wear-resistant welding layer inlaid on the front, also called an alloy pick.

Bucket teeth are cheap, but pickaxes are more expensive! Kindley rotary digging picks are also called Kindley rotary digging bombs. Bucket teeth are generally used on excavators, and picks are generally used on shearers. Excavator bucket teeth are an important part of the excavator, similar to human teeth, and are also wearing parts. It is a combination bucket tooth composed of a gear seat and a tooth tip connected by a pin. Because the worn and failed part of the bucket teeth is the tooth tip, only the tooth tip needs to be replaced. Picks are tools used on mining machinery such as tunnel boring machines and shearers to directly break rocks and remove coal. It is mainly used in mining, tunneling, road construction and other projects, and is usually used in conjunction with gear sleeves and gear seats.

7. The bucket teeth of the loader are easy to fall off
Are the bucket teeth easy to fall off or the tooth sleeves easy to fall off? There are several types of original bucket teeth. The earliest ones were integrally welded, and later developed into tooth body welding. The tooth sleeve is assembled from lock pins and retaining rings; now the latest ones are basically assembled bucket teeth. I don’t know what kind of barrel and cutterhead you have. In addition, I suggest you buy the original ones. Many of the external teeth are made of low-grade steel, which lacks toughness and is easy to break when shoveling original hard soil.