Lego deep literacy - product articles (below)

42030

Technology series

I finally talked about the Technic series, which is often translated into a mechanical series, perhaps because of this series of suits, most of which are modern mechanical engineering equipment such as various types of vehicle aircraft, and use motors, gears, springs. Various parts such as air pumps, to simulate real mechanical movements, rather than the other particle series suits, often just look like the appearance of goods

42030 Volvo Wheel Loader

The technology series can simulate mechanical movement, which is largely due to the design and construction of the technology series parts. It is completely different from the conventional LEGO particle building blocks, and the structural strength is greatly enhanced, which can withstand the mechanical movement.

Structural principle

Since we are talking about the technology series and adhering to the idea of ​​traceability, let me first talk about the relevant principles and talk about rational things;)

Let's first look at Lego particle parts. The granule part is the combination of the blocks by the joint of the stud at the top of the block and the groove at the bottom.

Standard particle patent

Although there are also granule blocks that are not protruding at the top, such as the well-known headlight bricks in the early days, and then the various SNOT (Stud not on top) technologies are everywhere, the connection of various variants is becoming more and more common. But on the main body, it still can't escape the mode of building by embedding and layering. (Note: Of course, there are some special connectors like hinges, joints, etc., but often only in the auxiliary role)

The parts of the technology series have taken a different approach and created a new way of construction. The main connection method is through the insertion of holes and shafts and bolting parts.

Schematic diagram, 1969 patent, cross shaft and gear combination

Common technology parts, including:

Pins of various variants, the same shape, some with high damping and low damping, suitable for different scenes

Various pin Pin, the picture is quoted from the network, the copyright belongs to the original author

Various variants of the shaft (Axle), various lengths, with stop, combined with the bolt, etc.

Various axes, pictures from the network, copyright belongs to the original author

Technology parts that are connected by shafts and bolts, including the main structural components: liftarms / beam

Comparison of two kinds of technology beams

This kind of technology beam also has two main forms. The Stud bulge is an early version (production started in the late 70's). The main feature is that it can be directly combined with standard particles by bite. You can think of it as a technology series. Early overdue version.

871 mechanical supplement set in 1977

The other type, smooth without bumps, is a later version (appearing around 2000), mainly because the structure is lighter, and with the improvement of the variety of technology parts, the technology package is no longer strongly dependent on particles. Component.

In addition, in addition to the linear technology beam, the new version of the technology beam does not need to dock the particle bricks, the use of various corner shape versions is more popular, and the structural shape is more flexible.

Other shape technology beam

In addition to the presence or absence of bumps, the two versions of the technology beam, there is a very significant difference, the new version of the technology beam parts, the length is mainly odd units, while the length of the old version is even units (compatible with granular bricks) .

Why is there such a difference? The main reason is the introduction of motors in the technology package. The drive shaft of the motor is usually in the center of the part (the gears are similar), so the width of the corresponding connecting components, and even the overall vehicle, must be odd for symmetry. Traditional granule sets, such as buildings, are usually symmetrical, and the symmetry is symmetrical. In granule assemblies, it is obviously more common to use even-length parts (odd number can also be symmetrical, but in the middle) If the decorative part is not symmetrical by itself, you need to put two to symmetry:).

As a result, various technical structural parts, combined with motors, batteries, connectors, gears, etc., can simulate real mechanical motion.

Motor / battery

Various gears, pictures from the network, copyright belongs to the original author

advantage

The advantages of this type of shaft bolt connection of the technology series parts are many. For example, the joint strength of the building blocks is much larger than that of the particle parts. If you are not careful, you may even build a "dead knot" that cannot be disassembled. The construction method is more free, and the connection direction is not limited to the superposition of a certain direction. In fact, most of the technology suits are built from the inside to the outside, and the transmission device starts to be built outward, and finally the transmission is driven by the appearance structural parts. The system is wrapped up. At the same volume, the weight is lighter (because there are a lot of holes).

You can use it to implement a variety of extremely complex mechanical transmission systems. For example, the internal power transmission of the 42009 engineering crane used a total of 127 gears. . .

First look at the structure near the motor

42009 Motor section

Look at the power switching part

Power switching

Finally, look at the transmission part of the whole car.

Power transmission

As for the 42009 after the completion, the long is such

42009 Engineering Crane

Or a more intelligent car gearbox from a mechanical structure

7-speed gearbox - the picture comes from the Baidu image search of the netizens shooting the "Great Land God"

The chassis is finished like this

Chassis structure

Finally, take the appearance of the car

Land Rover 110

Disadvantage

Disadvantages, look at the wisdom, see what angle you look at, such as:

The construction is difficult and relatively abstract: do you try to build a car chassis without looking at the drawings? Drive, suspension, shifting, steering, I don’t have enough accumulation, I’m afraid it’s hard to do it (however, this may be the reason why many AFOLs like the technology series, there are challenges), and sometimes even when looking at the drawings, It's possible to take half of it. You don't know which part of the final product you are taking. . .

Not easy to disassemble: Do you try the granule set for the bear child to play? In a blink of an eye, it becomes a pile of loose bricks, and the technology suits are more resistant to damage. The core structure may be impossible for bear children to deliberately want to destroy ;)

The shape is bare, the holes are numerous, and the mechanical sense is too strong: recently, there are various types of panel beautification, and the combination of particles and technology to pursue the appearance of beautiful appearance.

When it comes to appearance problems, the technology packages in recent years have been much better. The early technology packages, the finished products are like this:

92 years of products