What is a general line car? What are general line cars and special line cars? Bus .

Regular line cars can use monthly passes, and special bus cars cannot use monthly passes.

Linear velocity is linear velocity. The linear speed of the lathe refers to the chuck, and the outer circle of the chuck has a linear speed when it rotates. The conversion relationship between rotational speed n and linear velocity is that linear velocity = n d 60.

The "line speed" here refers to a standard of network equipment switching capabilities, rather than the line speed and angular velocity as commonly said.

Wire speed refers to a criterion for the switching capability of a network device, which is the maximum amount of data that can be throughput between the switch interface processor or interface card and the data bus.

What does an ordinary lathe wiring harness mean? This is the line of ordinary lathes, and the speed is called the speed limit. It is also said that the better her line speed, the stronger the ability of his lathe, and the higher the accuracy. The operation method is also very proficient.

There are a few more seats, curtains, etc., and the ticket price is two yuan, and the others are the same as the general line.

It has its own special route, and the fare is a lot of one yuan, which is written on the bus stop sign, and the special line is also commonly known as the fast lane.

A few more seats, 1 yuan more expensive than ordinary cars, love cards and student cards cannot be used, and some bus routes optimize stations.

You can't swipe the love card, the ticket price is two yuan, and the stations are the same.

Some stations are few, some are the same, the price is expensive, the seats are good, the cars are relatively high-grade (most), and there are a few exceptions.

The so-called linear stiffness is the amount of generalized force that needs to be applied to produce a unit deformation per unit length of member.

Generally speaking, if the line is too large, the period t will be small, which will aggravate the effect of the line, but if the line is too small, the deformation of the component will be too large, so the linear stiffness of the structure should be well controlled.

Stiffness refers to the amount of force exerted by a structure or component in the direction of deformation under the condition of unit deformation.

It is required for static or dynamic analysis of structures. For example, the stiffness matrix is used when analyzing the internal forces of the structure using the displacement method, and the stiffness parameters of the structure are used when calculating the effect of ** action or wind vibration. Structural stiffness parameters are also used in the design of power machine foundations.

Take two simple examples: if you bend a solid steel pipe and wood of equal diameter and length, the stiffness (bending stiffness) will be greater. Obviously, it's the size of the steel pipe, you can bend the wood, but it's very difficult to bend the steel pipe!

Solid steel pipes with equal lengths and unequal diameters are of course easy to bend with small diameters, that is, the stiffness of small diameters is small. Therefore, the stiffness is directly related to the material properties and cross-sectional properties.

When using the layered method, the d-value method, etc., to calculate the internal forces of the components, the linear stiffness is used to calculate the distribution coefficient.

Puche is the abbreviation of ordinary lathes:

Ordinary lathe is a horizontal lathe that can process a variety of processes for various types of workpieces such as shafts, discs, rings, etc., and is often used to process the internal and external rotating surfaces, end faces and various internal and external threads of the workpiece, using corresponding tools and accessories, and can also be drilled, reamed, tapped, and knurled.

CNC lathe: CNC lathe is a high-precision, high-efficiency automatic machine tool. Equipped with a multi-station turret or a driven turret, the machine tool has a wide range of processing process performance, can process linear cylindrical, oblique cylindrical, circular arc and a variety of threads, grooves, worms and other complex workpieces, with linear interpolation, arc interpolation various compensation functions, and in the mass production of complex parts play a good economic effect.

CNC "CNC" is the abbreviation of Computerized Numerical Control (Computer Digital Control). CNC lathes are automatically processed on the processed parts according to the pre-programmed processing program. We put the processing process route, process parameters, tool movement trajectory, displacement, cutting parameters (spindle revolution, feed, back eating tool, etc.) and auxiliary functions (tool change, spindle forward rotation, reversal, cutting fluid on, off, etc.), in accordance with the instructions and program format specified by the CNC machine tool to compile the processing program sheet, and then record the content of the program sheet on the control medium (such as USB disk, disk, magnetic bubble memory), and then input into the CNC device of the CNC machine tool, so as to command the machine tool to process parts.

This whole process from the analysis of the part diagram to the production of the control medium is called the preparation of numerical control programming. The difference between CNC machine tools and ordinary machine tool processing parts is that CNC machine tools automatically process parts according to the program, while ordinary machine tools are operated by people, and we only need to change the program to control the action of machine tools to achieve the purpose of processing different parts. Therefore, CNC machine tools are particularly suitable for processing small batches of parts with complex shapes that require high precision.

Special line: for some specific passengers to open the line, such as a large enterprise employees to open a special line, for the college to open a special line, for a scenic spot to open a special line, etc., the main passengers of the special line are concentrated in the departure station and the terminal station, generally only a few stations are set up in the middle of the section: a section of the main passenger line, mainly for the evacuation of passenger flow, such as a line from A to D, of which B to C this section in the morning and evening rush hour passenger flow is very large, so this line fleet is at 7:

00-9:00 and 5:00-7 p.m

A shuttle bus between B and C is set up between 00 to transport passengers. If you are talking about buses, BRT is the same as regular buses, which are the buses we usually see. However, the BRT has a special lane, which is not allowed for social vehicles, and only the BRT can be taken, so that the bus priority is realized.

Since there are no buses, there are only buses on the BRT, so you don't have to get stuck in a large area due to too many buses.

The main thing is speed, BRT is a dedicated lane, no vehicle can occupy his lane, ordinary buses do not have a dedicated lane.

The automotive wiring harness is the network body of the automotive circuit, and there is no automotive circuit without the wiring harness. A wire harness refers to a contact terminal (connector) made of copper that is crimped with a wire and cable, and then molded with an insulator or an external metal shell to form a component that connects the circuit with a wire harness.

The wiring harness industry chain includes wires and cables, connectors, processing equipment, wiring harness manufacturing and downstream application industries, wiring harness is widely used, can be used in automobiles, household appliances, computer and communication equipment, various electronic instruments, etc., the body wiring harness is connected to the entire body, and the general shape is H-shaped.

Expand your information;

Function introduction

In modern automobiles, there are many automotive wiring harnesses, and the electronic control system has a close relationship with the wiring harness. Someone once made a vivid analogy: if the functions of microcomputers, sensors and actuators are compared to the human body, it can be said that microcomputers are equivalent to human brains, sensors are equivalent to sensory organs, and actuators are equivalent to motor organs, so the wiring harness is nerves and blood vessels.

The automotive wiring harness is the main body of the network of the automobile circuit, connecting the electrical and electronic components of the car and making it function, and there is no automotive circuit without the wiring harness. At present, whether it is a high-end luxury car or an economical ordinary car, the form of wiring harness is basically the same, which is composed of wires, coupling plug-ins and wrapping tapes, which not only ensures the transmission of electrical signals, but also ensures the reliability of the connection circuit, and the current value specified to the electronic and electrical components to prevent electromagnetic interference to the surrounding circuits, and to eliminate electrical short circuits.

There are two types of automotive wiring harnesses: power lines that carry the power of drive actuators (actuators) and signal lines that transmit sensor input commands. Power lines are thick wires that carry large currents, while signal lines are thin wires that do not carry electricity (optical fiber communication). For example, the cross-sectional area of a wire used in a signal circuit is.

The cross-sectional area of the wire used in the motor and actuator is mm2, and the cross-sectional area of the wire used in the power supply circuit is mm2; Special circuits (starters, alternators, engine grounding wires, etc.) are available in mm2 sizes. The larger the cross-sectional area of the wire, the greater the current capacity.

In addition to the electrical properties, the selection of wires is also limited by the physical properties of the vehicle, so there is a wide range of options. For example, frequently opened doors and wires across the body of a taxi should be constructed of wires with good flex properties. Wires used in high-temperature areas are generally made of vinyl chloride and polyethylene-coated wires with good insulation and heat resistance.

In recent years, there has been an increase in the use of electromagnetic shielded wires for weak signal circuits.

With the increase of automobile functions and the widespread application of electronic control technology, there are more and more electrical parts, more and more wires, the number of circuits and electricity consumption on the car has increased significantly, and the wiring harness has become thicker and heavier. This is a big problem that needs to be solved, how to make a large number of wiring harnesses in the limited car space how to arrange more effectively and reasonably, so that the automotive wiring harness to play a greater function, has become a problem faced by the automobile manufacturing industry.

It can be simply understood that the automotive wiring harness is a wire that connects and controls various electrical appliances on the car, which is mainly composed of wires, sheaths, terminals, waterproof bolts, tapes, buckles, etc.

The manufacturing process of automobile wiring harness is very cumbersome, it is a labor-intensive industry, and now it can be used better, in the past, it was all about manual calculation of wiring harness drawings with less wires, sheaths, etc., and now basically use midline CAD software, which can improve efficiency and avoid errors.

Brother, all the wiring harnesses used for automobiles are called automotive wiring harnesses. Of course, the function is to connect the power or signal of various components on the car, and there is a lack of wires on the car, so I am afraid that it is not called a car!

Harness processing can find me us

To put it simply, it is to tie up the wires on the car one by one, so as to facilitate wiring and connection. The wires that are tied up are called wire harnesses.

Alone said that the automotive wiring harness is more general, depending on where the wiring harness is used in the car, different wiring harnesses have different functions, and it is meaningless to say wiring harnesses alone.

For example, ABS wiring harness, EPU wiring harness, CAN-bus wiring harness, etc.

Yes, as far as Zhang Bing is concerned, it is called the speed of the car.

Automobile wiring harnesses are divided into body wiring harnesses and engine wiring harnesses, as well as headlight wiring harnesses and so on. The wiring harness is to connect all the sensors and appliances in the car to the computer. Send the signal to the computer.

1. The engine wiring harness connects various sensors and actuators on the engine, and surrounds the engine.

2. The instrument panel wiring harness is connected with the body or chassis wiring harness, and various electrical devices on the instrument panel such as instrument clusters, air conditioning switches, receivers, cigarette lighters, etc. are connected along the pipe beam.

3. The body wiring harness is generally from the left side of the cab to walk against the floor, connecting the fuel tank sensor and the rear tail light.

4. The door wiring harness connects all the electrical devices on the inner panel of the door, such as central lock, glass regulator, speaker, etc.

5. The front wiring harness, from the cab, is connected along the fender and the front bumper skeleton with the electrical devices of the front wall, such as side turn signals and front combination lights, horns, electronic fans, etc.

Newly purchased vehicles, when the license plate is settled, the drug has been tested, but now there are many vehicles that are exempt from inspection, and the inspection-free vehicles do not need to be tested online when they are licensed, as long as the motor vehicle inspection exemption certificate is printed at the vehicle management office, but it is not an inspection-free vehicle, and it must be tested online when it is licensed.

The process of new car registration and inspection is as follows:

1. After purchasing a motor vehicle, you must first pay compulsory traffic insurance, which can be handled directly in the 4S store or by yourself to the insurance company. At the same time, the 4S store must provide a temporary license plate.

2. Take the compulsory traffic insurance policy, car purchase invoice, and motor vehicle factory certificate to the tax bureau to pay vehicle purchase tax.

3. Take the purchase tax invoice, car purchase invoice, factory qualification certificate, compulsory traffic insurance policy, and ID card, drive the vehicle to the vehicle management office, enter the hall to fill in the vehicle settlement application form, and pay the settlement fee. Then go to the designated window to check whether the vehicle is exempt from inspection, if it is an exempt vehicle, directly print the certificate of exemption from inspection. Then go outdoors for photo and visual inspection, prepare fire extinguishers and warning tripods, and if there is a certificate of exemption from inspection, there is no need for online testing.

If it is not an inspection-exempt vehicle, it must also be tested online.

4. After the external inspection or online inspection, return to the hall and go to the designated window to receive the motor vehicle registration certificate and motor vehicle driving license, and at the same time issue the annual review sticker and environmental protection sticker, as well as the vehicle license plate and anti-theft screws, and install the license plate.

License plate detection is a functional test before the license plate of a new car, I don't know what specific items I don't know, I just look at the door, the staff is driving the car to detect. It turned out that every car was to be online, except for those that were exempt from inspection. Not anymore, only SUVs are the SUVs we usually buy.