Small mixer has become an indispensable tool and equipment in the construction industry. In order to ensure the safety of the agitator, all components must be inspected daily. If any damage is found, it shall be handled in time. Among them, the brake pads are very important, which will endanger life and safety. To reach the service life in time, I'll give you a detailed introduction.
1. Daily inspection of small mixer
1. Check the engine before preheating
Check the capacity of the hydraulic oil (check the storage of the oil level), check whether the lubricating oil of the reducer leaks, check whether the hydraulic oil of the hydraulic system leaks, check whether there is a leaking joint, check whether the control handle of the control device is placed in the stop position, and check that the connecting fasteners should not be loose.
2. Inspection site during engine preheating
Check whether there is abnormal sound in oil pump, hydraulic motor, reducer, pump and mixing cylinder.
3. Check whether the locking snap ring, locking handle and anti rotation handle of the auxiliary discharge chute are locked.
4. Inspection for tightening torque of connecting bolts of mixer truck
The connection between the subframe and the main and auxiliary beams, reducer and tank body, etc. adopts high-strength bolts, which must be tightened regularly. The maximum time shall not exceed two months. The following table shows the tightening torque values of different bolts
2、 Tips for maintaining the brake pads of small hybrid cars
1. Check the small mixer of the brake pad every 5000 km under normal driving conditions, not only check the remaining thickness, but also check the wearing condition of the shoes, whether the wear degree of both sides is the same, whether the return position is free, etc. Any exceptions must be handled immediately.\
2. Small mixer and brake shoes are generally composed of iron lining plate and friction material. Do not replace shoes until the friction material parts are worn. For example, the front brake shoes of a small hybrid car have a thickness of 14 mm in the new film, while the replaced shoes have a thickness of 7 mm, including a thickness of more than 3 mm of iron lining and a thickness of nearly 4 mm of friction material.
Some small agitators have the brake shoe alarm function. Once the wear is reached, the instrument will give an alarm and prompt to replace the shoe. To reach the use limit, the shoe must be replaced. Even if it is used for a period of time, the braking effect will be reduced and the safety of small hybrid vehicles will be affected.
3. Replace the brake pads of the small mixer provided by the original manufacturer. Only in this way can the braking effect between the brake pad and the brake pad of the small agitator be improved and the wear is reduced.
4. When replacing the brake shoe, special tools must be used to push the brake auxiliary pump. Do not press back with other crowbars, otherwise the brake pad clamping guide screw will be bent and the brake pad will be blocked.
5. After replacement, several foot brakes must be applied to eliminate the gap between the small mixed shoes on the car and the brake disc, resulting in no brake and prone to accidents.
6. After replacing the brake shoe of the small mixer, it should be adjusted to 200 km to achieve good braking effect. The shoes of the new small mixer should be driven carefully.