What should I pay attention to when driving a concrete mixer truck?

To drive a concrete mixer truck, for experienced drivers, general knowledge of safe driving is good. What I want to remind here is that because the concrete is fluid, when the vehicle turns sharply, the speed must be reduced to prevent the centrifugal force generated by the concrete from making the vehicle unstable!

What are the effects of more concrete on the mixer truck?

The mixer trucks below 9 square meters are loaded with more concrete, and the truck will leak during the climbing process; if the 12-square truck mixers are loaded with more concrete, the mixing will be layered, the concrete sand rate will be low, and the particle size of the stones will be too large. Pumping a lot of pebbles.

New mixer trucks are generally prone to problems after a few years of operation?

It usually takes five years to pull dry materials and seven years for wet materials. Generally, mixer trucks are prone to problems after 3 years. The problems of mixer trucks have a lot to do with personal maintenance and manufacturers.

What should I do if the concrete solidifies in the mixer truck?

After the concrete is solidified, its main components are dicalcium silicate and tricalcium silicate. In theory, hydrochloric acid can react with it to release its solid state. But in fact it is difficult to operate, because the feed port of the mixer truck is very small, the amount of hydrochloric acid is difficult to control, and the hydrochloric acid can also react with the tank body of the mixer truck. In fact, this situation is often cut through the tank with electric welding or gas cutting, and then the solidified concrete is mechanically broken.

What is meant by the top of the mixer truck?

The top of the mixer truck refers to things other than the chassis fender, including the mixing tank and support, the inlet and outlet hopper, the hydraulic system and the reducer, the water tank and the pipeline, the operating linkage mechanism, etc.

Are the hydraulic systems of general mixer truck manufacturers domestic or imported?

Generally, the manufacturer will choose the installation according to the size of the mixer and the needs of the customer. The standard configuration of 6 square meters or less is the domestic system (optional import), and the standard configuration of 6 square or more is the imported system.

Is the hydraulic pump of the small square volume mixer better the selected volume pump or the variable pump?

The hydraulic pump is the main component of the mixer truck. Generally, the mixer truck with less than 6 square meters is the standard fixed pump, but it is recommended that the customer choose the variable pump.

What is the welding process of the mixer truck?

Nowadays, most manufacturers use fully automatic seamless welding for the welding of the entire car, and both the circumferential and longitudinal seams use fully automatic seamless welding.

What is the payment method for the mixer truck?

There are many payment methods for mixer trucks. You can buy the car in full or in installments. Generally, manufacturers will have certain discounts for the full amount of the car. There is no discount on installment payments, and the interest is equal to the bank interest.

What should I do if the concrete mixer truck is exhausted?

Is there a better way other than adding water?

If it is because of the concrete, it depends on whether the slump is too small or the strength of the concrete is too high, or the reason is that the concrete is too sticky. For the above reasons, the concrete can be adjusted appropriately according to the construction requirements; if it is always bad For the next step, it is necessary to consider whether there is a problem with the blade angle and the unloading port.

The metal briquetting machine is a professional machine and equipment for forming metal powder materials in many fields such as the metallurgical industry and the energy industry. After the pressed metal powder is molded, it is very convenient and efficient in the use process. It also plays a role in the reuse of metal powder waste and saves resources.

The forming part is the key structure of the metal briquetting machine process. Whether its design is reasonable or not directly affects the forming quality of the metal briquetting machine. The main model of the metal briquetting machine is a pair-roll forming machine (that is, a ball press that people often call). It has a pair of cylindrical wheels with parallel axes, the same diameter, and a certain gap between each other. There are many on the roll skin. With hemispherical sockets of the same shape and size and regular arrangement, the pressing roller is the main part of the metal powder ball press.

The operating principle is: driven by the motor, the two wheels rotate at the same speed and opposite directions. When the material falls between the two pressure rollers, the joint begins to be compressed, and the raw material is produced between the corresponding two ball sockets. Volume compression; the roller continuously rotates, the ball socket is gradually closed, and the molding pressure gradually increases. When the distance between the two ball sockets is the smallest, the molding pressure reaches the maximum. Then the pair of rollers rotate to gradually separate the ball and socket, and the molding pressure decreases rapidly. Before the molding pressure is reduced to zero, the pressed metal powder begins to expand and break away, completing the whole process of pressing by the metal briquetting machine.

Performance characteristics:

1. After years of industrial use and improvement, the metal briquetting machine has obvious advantages such as high ball formation rate, low power consumption, compact structure, and easy maintenance and debugging. It is a relatively ideal press. Ball and granulation equipment.

2. The performance of the metal briquetting machine is similar to that of the coal briquetting machine and the desulfurized gypsum briquetting machine. It can press fluorite powder, mineral powder, metal powder, coal powder, coke powder and other materials to make them shape.

3. The metal briquetting machine is forced to squeeze the roller, so the product has the three characteristics of high density, high strength and high hardness, and the press roller of this machine adopts 650mn hard material, which has good wear resistance.

Suppressed material requirements:

1. The particle size of the material is 80-200 mesh.

2. Excessive impurities are not allowed in the material, otherwise the surface of the roller skin will be damaged.

3. The material supply must be satisfied, so that the ball formation rate can be guaranteed. The user needs to be reminded that the wear of the roller skin is severe when the metal is pressed into a ball. The user should pay special attention to the material of the roller skin when purchasing the metal briquetting machine, and it is best to use wear-resistant alloy forging.

The compound crusher has a large crushing ratio, and the maximum crushing ratio can reach the output particle size. It can be adjusted arbitrarily, and is not affected by the hammer and liner wear; the structure adopts a non-screen setting, which crushes materials with high moisture content and large mud content. It is not easy to be clogged; the elastic adjustment mechanism is adopted, and the unbreakable materials can be automatically discharged without causing equipment damage; the bearings are arranged horizontally, with a long life, and can crush high-temperature materials (such as cement clinker); the rotor body structure of this machine is unique When crushing materials, the rotor body is hardly worn; the rear cavity is equipped with a screw rod or a hydraulic opening mechanism, and the wearing parts can be easily replaced without using the main equipment.

Structural advantages:

1. The structure is simple and reasonable, and the operating cost is low. Using the principle of rock-to-stone, the wear is small.

2. High crushing rate and energy saving.

3. It has the functions of fine crushing and coarse grinding.

4. It is less affected by the moisture content of the material, and the moisture content can reach about 8%.

5. The working noise is lower than 75 decibels (db level), and the dust pollution is less.

6. Suitable for crushing medium-hard and extra-hard materials.

7. The products are cubes with high bulk density and minimal iron pollution.

8. The impeller’s self-lining wear is small, and the maintenance is convenient.

principle:

The material falls vertically from the upper part of the machine into the high-speed rotating impeller, under the action of high-speed centrifugal force, and
The other part shunts the material around the impeller in the form of an umbrella to produce high-speed impact and crushing. After the materials collide with each other, they will form a vortex between the impeller and the casing. It is discharged to form a closed circuit for multiple cycles, which is controlled by the screening equipment to achieve the required finished product particle size.

The compound crusher is a kind of unscreened, adjustable fine crushing equipment optimized and designed on the basis of absorbing advanced fine crushing equipment at home and abroad. It can be widely used in the fine crushing of raw materials and clinker in cement plants, and can also be used for fine crushing operations. Dolomite, coke gemstone, lead-zinc ore, serpentine, blast furnace slag, coal gangue, phosphate rock and other medium-hard materials finely crushing operations, especially suitable for hard limestone, dolomite, granite, basalt and other artificial sand or high-speed Processing and crushing of road pavement stones.

Daily maintenance:

1. Regularly shut down and open the observation door of the vertical crusher to observe the internal wear of the crusher. The wear level of the center feed pipe, cone cap, upper and lower runner linings of the impeller, circumferential guard plate, and wear-resistant block should be replaced in time after wear. Or repair, and replace the wear-resistant blocks at the same time to ensure that the weight of the wear-resistant blocks is the same. It is strictly forbidden to open and observe the crusher during operation] to observe the internal working conditions, so as to avoid danger. If the impeller body is found to be worn, replace it in time and seek repair from the manufacturer.

2. The vertical crusher adopts special grade automotive grease or 3# lithium base grease. Appropriate amount of grease is added every 400 hours of work. After 2000 hours of work, the main shaft assembly is opened to clean the bearings. Generally, it works for 7200 hours and replaces the new bearings. The upper bearing of the main shaft assembly is the floating end, and the lower bearing is the fixed end. After assembly, the pulley should rotate flexibly when pulled by hand.

3. The tensioning force of the drive triangle tape should be adjusted appropriately to ensure that the triangle tape is evenly stressed. When driven by dual motors, the triangle tapes on both sides should be grouped and matched, so that the length of each group is as consistent as possible. It should be adjusted so that the current difference between the two motors does not exceed 15A.D. In the operation of the vertical crusher, because the equipment is a high-speed equipment, special attention should be paid to safe production. Relevant personnel should stay away from the equipment, and repairs should be carried out after shutdown if the machine needs to be repaired.