The question of the wrench is very interesting, let s think about it!!

Wrench. wrench

Use the principle of leverage.

Hand tools for screwing open or sleeve fasteners of bolts, screws, nuts, and other threaded tightening bolts or nuts. The wrench is usually made at one or both ends of the shank, and the clamp handle is applied to apply external force, and the lever can be turned to twist the bolt or nut, and the opening or sleeve of the bolt or nut can be screwed. When used, the bolt or nut can be twisted by applying an external force to the shank in the direction of thread rotation.

The wrench is usually made of carbon structural steel.

or alloy structural steel manufacturing.

Several types of wrenches are commonly used.

Dull-spanch: One or both ends are made with a fixed-size opening to turn a nut or bolt of a certain size.

Torx wrench: Both ends have working ends with hexagonal holes or twelve-corner holes, which is suitable for occasions where the working space is small and ordinary wrenches cannot be used.

Dual-purpose wrench: one end is the same as a single-ended wrench, the other end is the same as a torx wrench, and both ends are screwed with the same specification of bolts or nuts.

Live wrench: The opening width can be adjusted within a certain size range, and it can turn bolts or nuts of different specifications.

Hook wrench: Also known as crescent wrench, it is used to twist flat nuts with limited thickness, etc.

Socket wrench. It is composed of a plurality of sockets with hexagonal or twelve-angular holes, equipped with handles, adaptors and other accessories, especially suitable for screwing bolts or nuts with very narrow positions or deep depressions.

Allen key.

Formed hexagonal rod wrench for twisting hexagon socket screws.

The model of the hexagon wrench is according to the hexagonal opposite side size, and the size of the bolt has a national standard.

Torque wrench. It shows the applied torque when the bolt or nut is turned; Alternatively, when the applied torque reaches a specified value, a light or sound signal is emitted. Torque wrenches are suitable for assembly work where the torque is clearly defined.

Does the resistance line pass through the pivot point?

After the fulcrum, the opening and the active wrench, the fulcrum is the hard side, and the fulcrum of the inner and outer 6-angle wrenches is related to the precise contact of the nut.

Also, why sometimes it doesn't work.

If the trigger does not move, it means that the nut and screw are too tight, and the increase force arm is OK.

From the moment of stationary to the moment of movement, the amount of power exerted by the person on the wrench changes, the wrench force is at the moment of stationary to motion, the rest must be the largest, if so, the imbalance will be found by the principle of lever balance, but if it does not change, then the lever (wrench) will not rotate at a uniform speed but accelerate, because when stationary, we will use the maximum force, when it moves, we will reduce the output of the force, and the wrench will not move all the time, because we have to adjust the position that is easiest and most labor-saving.

However, the fulcrum is just very far from the fulcrum, and the resistance arm is equal to the radius of the nut.

The reason why it can't move is because of the friction caused by the parts.

This is related to the maximum static friction, which is less than the static friction under the same conditions.

So when you want to turn it, you need a lot of force, but when you turn it, it becomes sliding, and the sliding friction is less than the maximum static friction, so the force you use is also smaller.

4) (5) I think the above three points are explained clearly, and you will understand.

In addition to the relationship between static friction and dynamic friction, the more important thing should be that the positive pressure of the inclined plane is reduced a lot, resulting in a decrease in friction.

It's good to think about life and philosophy, but it's not good to have any excess.

Overthinking is obsessive-compulsive disorder, first knowing that it's not good, and then doing it:

Once you fall into the meaninglessness of thinking again, slap yourself or pinch the back of your hand, and let yourself experience torture and pain again and again, until you will naturally stop thinking when you do it again.

Science is a general term for those disciplines that study the objective world. Philosophy is not a science in the strict sense of the word. However, a scientist who lacks philosophical thinking cannot be called a real scientist, but can only be regarded as a technician.

Science is the study of nature, and to expand the horizon is to study how to better control nature.

The birth of scientific experiments can be traced back to medical treatment and witchcraft rituals. At first, it was a worship of the forces of nature, but later it developed into a desire for control as it became more familiar.

Looking back at the history of mankind, the impetus for the development of science is largely inseparable from war (especially large-scale wars). Every war, especially a large-scale war, has always caused great trauma to human society – but after it has ended, science and technology have always made great progress.

In this way, it can be seen that scientific research is the study of how human beings can control and conquer nature.

In a word: science is the collection of empirical knowledge that human beings have developed in their quest to maintain their own existence and relative stability.

In everyday life, however, people only refer to empirical knowledge that has great power as science (and of course the direct origin of that knowledge) – so the definition of science we speak of on a daily basis is the definition of the natural sciences discipline in schools (mainly based on universities).

"Science" is a sub-discipline knowledge system that reflects the objective laws of nature, society, thinking, etc.

I think it's a course that requires your spirit of exploration to study various natural phenomena and find and explore the laws that come from them.

In a word: for your quality of life to be higher, faster, stronger!

Let's think about whether the sales and profits of the product are starting to decline. It can be assumed that the product has entered the state of the reform.

Hammers and wrenches are tools, tools are used to maintain or repair things, isn't it similar to the settings in the computer?

When you travel alone, you will feel a different scenery, but the most important thing about this kind of travel is the mood, and the most memorable thing about the trip is to feel the local customs and feel the enthusiasm between people.

Travel, that is, we are tired of staying in a familiar place, and go to another place to experience different customs. The events we experienced during the journey will be unforgettable. There is always a good aftertaste in any aftertaste.

The fatigue of travel makes us physically tired; Security concerns can also make us anxious; There are also difficulties that can also make us confused. A smile from others and a help are unforgettable. In addition to the harvest of scenic spots, these are also the wealth of our harvest.

Tourism has grown oneself, increased knowledge, enriched experience, and learned the ...... gratitudeThese may be what we will never forget.

Traveling alone, the local people on the way are very interesting, and the life is very leisurely, this kind of life belongs to the slow life, which makes me yearn for it a little.

When I travel alone, the most memorable thing is that I suddenly fell ill, a stranger came to help me, and then I met my fellow countrymen in a different place.

Once in the **, I was thrown in the middle of the bus. Luckily, I stayed in a family for a few days. Very impressed.

First, the beautiful scenery on the way. Second, the food on the way. Third, the customs and customs of various places. Fourth, Monuments and Intangible Cultural Heritage. ，

Going to Guangzhu alone, the most unforgettable thing in the journey is to be helped by a warm and beautiful Li Huizhen girl.

When you go out on a trip. Unforgettable, unforgettable things. The tourist attractions are so nice and beautiful. You'll be hard to forget him. I went on this trip and would like to go on a second trip. It's hard to forget.

When I got sick on the way while traveling alone, the help I received from others was the most memorable for me.

Traveling alone. I went with the group. On the go, shopping. Compulsive shopping. The mood at that time is indescribable, and it is the most unforgettable for me.

It's a very interesting and memorable thing for someone to help you get a bag, and you have to be very happy to get something. Sitting at the same table with someone else to eat with a little care and concern with you is unforgettable.

In 2013, I went to Kunming, the train arrived at Kaiyuan Station, there was a person, took the train to die, I heard that I drank too much at noon, this thing made me the most unforgettable.

Traveling alone, during the trip, once I went to Hainan, before I arrived at the tourist point, I saw a lot of children selling shells on the side of the road, I asked the child you are so young, why don't you go to school? Catch up with this kind of livelihood? He said that there was a shortage of lines at home, and that there were sick people who had been living for three months in order to support the family, and that I had collected some shells from the beach every morning, and that I had to sell them for money to eat.

I will never forget.

If you want to say that the most memorable things on the journey are definitely meeting gangsters, committing crimes against you, or helping you with the same kind people. These two things of a completely different nature make us feel the sin and danger of the world, and at the same time, we also feel the warmth and friendship of the world. Let our feelings go up and down, and we will definitely leave unforgettable memories, lingering and unforgettable.

The most memorable ones were encountered during the trip.

The people who helped themselves, they didn't.

Affection for care, care. Let me feel.

The journey was so warm.

When you travel alone, what are the most memorable things about your trip? I think it's also memorable to meet some kind people and kind things during the trip, and some more disgusting and sad accidents, etc., but no matter what? The journey is to be happy, and being happy is the happiest thing.

Traveling alone, the care of the people in the tour group, the tour guide's description of the local customs and their feelings for their people are very unforgettable.

Traveling alone, in the journey to establish my unforgettable memory is to be alone, quietly enjoy the beauty and quiet of nature, enjoy the joy and loneliness of the journey alone, in the beautiful scenery of the fairyland, leave the figure that I have walked, this is the most unforgettable thing in the journey.

If you travel alone, you will feel more, and I think there will be many things that will make you feel unforgettable and memorable during the trip, but if you experience it alone, it will be very interesting. I really enjoy traveling alone, I think only one person can think quietly and think about what you want to think, instead of wasting time with other people, but also take into account the emotions of others everywhere, take care of others, and not infect others with your own emotions, if you are pessimistic, it will be more difficult to control, there will be a lot of things in the journey that make us feel the beauty of life.

The comics of the bosom friend comics are too scattered.,Can't be connected.,And some comics will make an ending when they stop and feel particularly rushed.,It's better to draw it according to the original design.,Don't have that so-called ending.。 If I were to give up one copy from Manke and Sa Comics, I would definitely give up Manke.

Agree with you, oh, absolutely support Sa.

Sa's compilation is very attentive, and every comic is exquisite.

Bosom friend, January 4, annoying me to death = =

Moreover, the quality of bosom friends is getting worse and worse, but Sa is getting better and better. . .

Are you also a parent? The same love is sassy

Support Sa.,But you can't say that about Manke.··· Bosom friend Manke is just ** and a little longer, but its painting is really a bit of that... Wow wow wow, love sa! Top you!

Sassy is good-looking, but I think he's "regressed".

The new work has no love.

Almost all of them are girls or something.

The printing quality is not better than before.

And the most infuriating thing is that the two new works in this issue have come up to squeeze out the demon?!

Why do you have to squeeze out a few comics as soon as the new work comes up?

Additional: I won't buy a comic painting.

Sa comics like one! Bosom friend Manke goes to the trash can!! Sa comics are much better than bosom friends! Sa Comics is always number one! I love beauty very much, and I praise one of the glass winds!

Agree, agree... It's okay to change the sassy thing to the comics, and the seventh issue in January is cool. Top you!

Like one! I love it!! I wish Xiaosa better and better! Love you forever! In addition, the style of painting of Sa comics is not single at all, you will know it after reading it!

Uh-huh. Agree Agree, Xiaosa will always be the first!!

Absolutely support Sa! My sa has never been bought! The other two said they wanted to sleep after watching it....[resembles a salamanian sleep].

Thumbs up!! I love sassy so much, what a bosom friend comic is bored to death!! Top you! Top sa!

Bosom friend Manke is ugly or dead, the plot is getting more and more boring, how can it be sassy and good-looking!

Sassy !! Bosom friend Manke went to !!

The torque wrench with the replaceable head is also divided into round head and square head, depending on what head yours has, and then there is generally an open head (similar to the head of an open wrench, like a fork), a plum head (similar to the head of a plum wrench), a ratchet head (this is a commonly used head, and a general torque wrench is equipped with this head), and there is a live wrench head. But what kind of head to choose, or according to the use of your customers to match, after understanding clearly, you can find us strong victory tools, we are dedicated to torque tools, the head also has!