In our daily life, we often see such a situation. Children lie on the dining table or sit on the bed to do homework and study, some because of the space constraints at home, and some because the parents do not pay enough attention. These seemingly inconspicuous little things are closely related to the child’s academic performance and physical health, so don’t be careless! Parents, do you know how to choose the right desk and chair for your child?

1. Security

Since it is a product for children, first of all, safety must be guaranteed. Whether it is from the material or the overall design of the product, safety must be considered. Remind parents, don’t be deceived by some bells and whistles, if you really don’t know how to choose, try to choose some big brands. Generally speaking, big brands have good reputation, and quality and safety are guaranteed.

2. Functionality

A high-quality children’s desk chair must be ergonomically designed. The height of the desk and chair should match each other. In the process of using it, children can develop a good sitting posture and use their eyes scientifically. When purchasing, it also depends on whether the desks and chairs can be adjusted. Of course, it is good to adjust according to the height of the child, and it can match different heights.

3. Ease of use

In the reading stage, children need stationery books and other items, and it is equally important if the desk can be equipped with a good storage function. Moreover, during the adjustment process of the desk, to see if it is convenient for children to adjust by themselves, without the help of parents, it is still a lot of peace of mind!

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Details can be accessed by clicking here:https://www.aoyangschoolfurniture.com/aoyang-news/how-to-choose-the-desks-and-chairs-suitable-for-children.html

As the name suggests, the square bottom machine is used to bond the bottom of the paper bag to the whole through a certain hot pressing or gluing process. We often use various paper bags in our daily life, but few people understand the working principle and working process of this bag making machine.

The working principle of the square bottom machine

1. Silo discharge mechanism

The apparatus includes a rack. The frame is provided with a turntable, a turntable, a paper suction assembly arranged on the turntable, a silo, and a discharging mechanism; the silo and the discharging mechanism are arranged on both sides above the frame, and the silo and the discharging mechanism are located on the rotation path of the turntable. ; The turntable includes a disc body at both ends and a mandrel connecting the two disc bodies.

2. Paper suction device

The paper suction assembly is rotatably installed on two disc bodies of the turntable, one of the disc bodies is provided with a transmission mechanism for driving the rotation of the paper suction assembly, and the other disc body is provided with a gas distribution mechanism for distributing air to the paper suction assembly; the paper suction assembly It includes a hollow shaft, the hollow shaft is rotatably arranged on the two disc bodies of the turntable, and a number of paper suction wheels are sleeved on the hollow shaft.

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Details can be accessed by clicking here:https://www.lyhuatianm.com/products-information/the-working-principle-of-the-square-bottom-machine.html

Steel bookshelves have begun to slowly replace solid wood bookshelves because they are not only more secure in quality, but also more beautiful in appearance. They are now widely used in institutions, enterprises, schools, shopping malls, family, etc. Why is it becoming more and more popular? How is the steel bookshelf made? So let’s take a deeper look at the steel bookshelf and see where its advantages are.

First, the production process of steel bookshelf

1. Plate

The processes from cutting, shearing, bending, stamping, welding, spraying, assembling, packaging, etc. are all operated by high-precision production lines with a degree of mechanization of 70%. In the production process, the next process checks the previous process. The quality of the products is high, and the unqualified semi-finished products are prevented from flowing into the next process, so as to check every layer.

2. Surface treatment

Process: high temperature degreasing – cleaning (first time) – rust removal – (pickling) – cleaning (secondary) – phosphating treatment – cleaning – drying – spraying – heating up to 200 degree of curing.

test:

A. Surface spray adhesion test.

B. One kilogram of steel balls can be naturally dropped at a height of 50 cm for impact, and the surface will not fall off.

Second, the advantages of steel bookshelves

1. Sturdy and environmentally friendly

Compared with traditional wooden bookshelves, steel bookshelves have obvious advantages in fire resistance, firmness and environmental protection. Steel bookshelves are generally made of steel plates, and the surface is electro-galvanized, hot-dip galvanized, powder electrostatic spraying, or sprayed with epoxy resin after phosphating, so the high hardness and strong coloring degree of steel bookshelves are formed. It will not peel off the paint or cause the surface to dent due to ordinary impact.

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Details can be accessed by clicking here:https://www.etegreen.com/blog/manufacturing-process-of-steel-bookshelf/

As agricultural machinery, tractors are the basic tools of current agricultural farming. At present, agricultural tractors basically transmit power through mechanical transmission, and clutch parts are essential. Once the tractor clutch is damaged, the operation efficiency of agricultural machinery will be greatly reduced.

Therefore, it is necessary to carry out regular maintenance on the agricultural tractor to avoid the failure of the tractor during use, which can help to improve the effect of mechanical operation and improve the efficiency of agricultural production.

Tractor Clutch Maintenance

Lubricate clutch bearings regularly

The clutch should be lubricated with lubricating oil frequently, and the front and rear bearings of the clutch should be greased every 12 hours, and the amount of each time should not be too much. For some closed-structure locomotives, the bearing can be removed during maintenance and then lubricated in heated butter. After the butter has cooled, the bearing can be taken out.

Adjust the distance between the standoffs to meet the standard

Due to the wear of the friction linings, the spacing of the clutch will change slightly, which will affect the working efficiency of the machine. Therefore, it is necessary to always check whether the clearance of the clutch is qualified. If it is not qualified, first loosen the lock nut on the clutch pressure plate, press the rocker arm of the clutch by hand, and then use a screwdriver to make fine adjustments. After finishing, tighten the nut and start the engine. Check whether the standard has not been met
If required, continue to adjust until the clutch clearance reaches the standard.

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Details can be accessed by clicking here:https://www.syclutch.com/news/tractor-clutch-maintenance.html

Hydrogen peroxide has strong oxidizing properties, and it will cause explosion after contact with flammable substances and organic substances, and there is a danger of combustion and explosion during impact, friction and vibration. Therefore, the transportation of hydrogen peroxide is a particularly troublesome thing. Today, the tanker sales manufacturer will introduce a semi-trailer tank truck specially designed for hydrogen peroxide transportation to truck drivers, which is not only safe, but also pulls more!

33 square stainless steel semi-trailer tank truck

High-quality selection

The tank body is made of high-quality stainless steel, with circular section and variable diameter design, the center of gravity of the whole vehicle is lower, and the transportation is safer;

Patent structure

The patented structure of the outer reinforcement ring, the scientific arrangement of the butterfly-shaped wave-proof board and the simple wave-proof board, the impact resistance is better;

Reasonable match

Short wheelbase and long rear overhang are suitable for transportation in complex road conditions; the frame is made of high-strength steel, and the structure is safer after CAE force analysis;

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Details can be accessed by clicking here:https://www.ly-cimc-linyu.com/news/33-square-stainless-steel-semi-trailer-tank-truck/