1. Cable link model

General cable hooks are linked to mineral cables. The specifications are 20, 30, 40, 55, 70, 80, 100, and 5 hooks and 8 hooks.

<table style="width:80%;" cellpadding="2" cellspacing="0" align="center" border="1" bordercolor="#000000">

IA

hook length (mm)

Maximum tension (n)

8 2

166 2

4100

20 2

110 2

4100

30 2

122 2

4100

40 2

127 2

4200

50 2

144 2

4200

60 2

156 2

4200

70 2

167 2

80 2

189 2

100 2

209 2

84 2

40 2

60 2

77 2

table>

2. How many meters are the cable hook per meter

In the telecommunications engineering budget, the cable is hooked about 50cm to put one. To be precise, it is linked to 2060 cables per 1km.

ConstructionGenerally, one interval is 0.6-0.8 meters.

Third, cable hook installation method

1. Select the suitable cable hook according to the cable model and outer diameter. Every 1.2m to 1.8m (can also be limited to the cable is not drooped) as a suspension unit, each unit is linked to one or more cables according to one or more cables.

2. During the suspension, first fix the hook on the wall of the well. When the hook is fixed, the arc hook is vertically drooping when the hook is fixed.If multiple cable Hanging, one set of hooks and two skewers must be adopted.The construction personnel first connect the hooks on the ground, and then fix it according to the previous method.

3. When the two hooks are connected in series, first align one hook hole to align with another hook rod, press it hard, so that the Hanging rod enters the holes completely, and then rotate with the arc hook to make the two hook straight rod sections become sections.180 .

4. After confirming that the cable enters the curved hook as a whole, the construction staff can let go of the cable.

(1) Each unit can be linked in series and the number is not easy to exceed 10.

(2) In order to improve the quality of the suspension, the hooked straight pole segment is best to close the well -closed during static.

(3) It is strictly forbidden to quickly send the cable into the arc hook by the volley jumping method, which may make the curved hook to withstand the weight of the cable and the human body in an instant, causing a break.

(4) After confirming that the cable overall enters the curved hook, the construction staff can let go of the cable.

On April 1, 2024, the GB/T 43007-2023 was officially implemented in "Mattress Hardness Level Test and Evaluation Method". This is a country aimed at providing consumers with more accurate and scientific Mattress hardness evaluation standardsRecommended standards specifies the instrument, equipment, test conditions, test steps, and test reporting requirements of the Mattress hardness level test.

This standard stipulates that during the testing process, a series of professional equipment such as testing platforms, mobile brackets, and mechanical testing devices must be used to ensure the accuracy and reliability of the test results.At the same time, the standard also clarifies the specific conditions of Mattress sample pre -processing and testing, such as temperature and humidity to eliminate the impact of environmental factors on test results.

In terms of testing steps, the standard divides the Mattress into five areas in the length direction, and the hardness level test is performed separately.This method not only considers the overall hardness of the Mattress, but also pays attention to the hardness distribution of different areas, and it is more in line with the principles of ergonomics.

After the test is completed, the test report will record the hardness Levels of each test point and the overall hardness level evaluation of each test point to provide consumers with comprehensive and objective Mattress hardness information.

[Driving glasses] What are the effects and principles of driving lens?

The role and principle of driving mirror

Driving lens (also known as driving glasses, driver glasses) is a kind of Sunglasses, a kind of glasses used by polarizing Sunglasses and suitable for driving (driver).

The role of driving mirror

During the driving process, there are various reflex light and glares from different objects (such as glare and glare of the car) from different objects. The polarizer can filter out unnecessary light, make the sight more clear, drive safer, and 100 can be 100.%Block harmful light.Gray or dark green lenses can maintain the most natural original colors when visually, which is a good choice.

Driving mirror material

Levels: Polarized lenses meet relevant standards. If UV prevention should be above 99%, it is not easy to break.

Frames: aluminum -magnesium alloy, pure titanium, etc.

Principles of driving mirror

Driving glasses are designed according to the principle of precision optical principles based on the angle of the lens polarization and arc, which only allows light to pass the light of the polarization direction, while other strong light sources (such as the sun, water, glass, and aspirational road)Foreign light interference, avoid flowers, dazzling, dazzling and other phenomena, making the sight clearer and softer.

Replenish:

Commonly used methods to distinguish glasses: you can put Sunglasses in front of your eyes, observe the distant targets through lenses, such as window frames or door frames, and then move the glasses up, down and back, the target should not be swinged and wavy deformation.

Why wear a driving mirror: Natural light (non -polarized aurora) is actually composed of electromagnetic waves that will vibrate in a specific direction, and light that is reflected or scattered usually prefers a specific direction.Because the roof or pool reflects the sunlight; after the natural light is filtered by the polarized lens, it can only be passed by the light in the direction. That is to say, the polarized lens can first be polarized by the light, and only the light in one direction passes through the direction.(Viewed) Polarized driving mirror is to use this feature to block harmful light, because the sunlight will cause harmful glare if it is touched by any object, and the polarized driving mirror can completely absorb these will cause dazzling and dazzling and dazzling andThe strong light of the eyes is damaged, and the driver of the driver's vehicle often encounters the strong light of the car lights coming on the face, causing the vision to be unclear. If wearing a driver's mirror, it can eliminate unclear vision caused by strong light.

Misunderstanding: Driving the mirror at Night

The so -called night driving mirror is just a colored polarized lens with light increase.Since it is a non -ferrous lens, the light will weaken.Due to the dark light at night, when wearing a colorful lens, it will reduce the visual clarity and affect the judgment.Of course, when you meet the car, wearing a driving mirror can eliminate the vision caused by the strong light of the opposite side light. However, from a medical perspective, it is not recommended to wear it for a long time, or you can wear it in the urban area. Try not to wear it as much as possible.Driving the mirror at night can not only be worn at night (in the evening). It can be worn when the light and other Lights such as rainy days, fog and sky are relatively dim. It can effectively eliminate the vehicle headlights to produce glare, increase color saturation, and have the function of lighting, so that driving is madeThose who have a clear field of vision and more accurately understand the road conditions.

What are the misunderstandings of driving glasses?

Misunderstanding 1: The darker the color, the better

Many people take it for granted that the deeper the color, the better the ultraviolet function.In fact, the function of Sunglasses filtering ultraviolet rays is only related to the plated membrane, and the color is not deeper, the better.Especially for the long -distance driver, if the Sunglasses we wear are too darker, the eyes are more prone to fatigue, and it is more dangerous to enter the tunnel and other Lights from strong sunlight.

Misunderstanding 2: Polarized lens is the most suitable

Many drivers like to wear polarizers. Indeed, polarizing mirrors can weaken strong light, eliminate glare, and make the sight naturally soft, but in fact, polarizer is more suitable for large -scale reflective environments such as fishing and skiing.The scene with darker light, polarizing mirror is easy to make people suddenly dark.In addition, polarizing mirrors can make LCD screens,ledThe color of the red and green Lights fade.Therefore, when choosing a Polarized mirror, it is best to choose a good quality optical lens. When crossing the tunnel, it is best to remove the glasses in advance and blink more.

Misunderstanding 3: Do not wear myopia mirrors

Some drivers are slightly myopia, and they usually don't wear myopia mirrors when they are driving.But once you put on Sunglasses, the problem comes: the eyes are more prone to fatigue, the vision will decrease, just as it will be affected by driving vision at night.Therefore, the driver of slight myopia usually has no problem with driving. If you want to wear Sunglasses, you must be equipped with a lens with myopia.

Misunderstanding 4: Sunglasses color is too fancy

Fashionable young people will have a variety of colors of Sunglasses. It is not false, but it is not suitable for use when driving. For example, pink and purple lenses will change color and spectrum.In fact, Sunglasses are best used in gray lenses because the basic chromatography will not be changed.Followed by dark green.Camellia and yellow lenses have the effect of improving brightness, which is more suitable for foggy, dust and other environments.

1. What is the structure of electric scissors

Electric scissors are used as the power of the motor, and the handheld electric Tool that drives the work head through the transmission mechanism to drive the cut operation. The specific part is composed of the following parts:

1. battery: Most of the electric scissors are lithium batteries. They have large capacity and light quality. They are usually equipped with 1.5m long power cords, chargers and backpacks. The power cord cannot be cut off.There is also a battery with electric scissors on the handle, which is usually small.

2. blade: There are two types of dynamic blades and fixed blade. The quality of the blade is directly related to the pruning effect and pruning efficiency. Pay attention to the material, workmanship, and service life of the blade.

3. Body head: Not all electric scissors have a knife head. Generally, 3 cm electric cutting has a knife head, and 4 cm electric scissors have no knife head.

4. Extend rod: It can be used to trim higher branches and leaves. The length of the lengthened rod is generally 1.3-1.9 meters.

5. Others: Including lubricating oil, rubber skid cover, etc. These tools can make electric scissors more convenient and smoother.

2. What is the working principle of electric scissors

Electric scissors take electricity as the source. When working, the controller switch starts and starts with a brushless motor. Drives the eccentric axis-connecting mechanism through the reduction box, so that the knife rod is driven by the head of the knife head.Do not move on the blade to complete the pruning of the branches.

3. How to use electric branches and scissors

Electric pruning trimming is used for cutting and trimming and trimming, and trimming, picking, etc. of fruit branches below 30mm. The use of simple and convenient use, good pruning quality, and the use of electric pruning trimming is:

1. Open the special Backpack and put the electric pruning and battery in the corresponding storage package.

2. Put the electric branches and pruning and connect the power supply through the Backpack and connect to the battery, and wear a Backpack (put the scissors power cord into the specified fixed buckle of the strap to prevent it from cutting to the wire)

3. Take out the electric branches and trimming, turn on the battery power switch, and will make a "drop" sound, which represents the normal power supply of the battery.

4. Continuously and quickly deduct the trigger 2 to 3 times, and the blade will be opened automatically.

5. Before work, pull the trigger to make the blade aircraft run several times. Listen to whether there is no sound or too fast and too slow, and start working after normal.

6. The opening size of the blade: Press the trigger, and when you hear the two "Didi" sounds, the trigger will be released immediately, and the size of the blade will automatically convert.

7. After the trim is trimmed, long press the trigger, hear the three sounds of "Didi", release the trigger, automatically close the blade, and then turn off the battery power switch to collect it.

Note: During the long -term use of the machine, the grip heat is normal; the blade of the scissors needs to be maintained regularly. When the branches are completed or needed to replace the blade, the blade is opened to add lubricating oil between the blade.

1. Where is the cat sand basin better?

1. Cat sand pot can be placedbathroomIs it?

cat sand pots can be placed in the toilet, and the toilet generally has rowing fans to disperse.The cat litter that is scattered can also be washed away directly with water. When the owner goes to the toilet, he can directly observe the cat's excretion.

2. Can it be placed next to the rice bowl and waterover?

Not recommended.Cats are animals that pay attention to hygiene, and they generally refuse to excrete in the place where they eat.

3. Can the cat sand pot be placed on the balcony?

Yes, as long as the cat can find the cat litter basin skillfully.The balcony environment is relatively clean, which is more suitable for cat excretion.

Second, can the cat sand basin change the position of the cat?

It may not be used to it at first, and it will be good for a long time.Go to the catbathroomWhen she took her to the position of the cat sand pot, or put the cat's stool in the cat litter basin, in short, let the cat remember the smell, so that they can gradually find the place to go to the toilet.If a cat can't find a place to go to the toilet, you must educate patiently and must not be corporal punishment.If you hit a cat casually, you will have a sense of fear of the owner, and you will have a humble personality.Because the cat's body is much smaller than a person, it is likely to be injured if it is beaten.