Telescopic cylinder

A telescope tube is made of two or more coaxial inner -side each cylindrical or prismatic, possibly also slightly conical partial tubes. Each of the inner telescopic parts can be axially moved out of the next larger, the so immediately enveloped him. Each excerpt ends with a stop or arrest at a position in which the function of the telescopic tube as a whole is still secured, it therefore guaranteed support, flexural strength or tightness. Soft - - stop and the latch by frictional rotation under train by the slightly conical shape of the tubes With telescopic fishing rods done. Camera Tripods from the first half of the 20th century had done cylindrical brass tubes with a longitudinal groove that secures it against rotation so that the engagement of a locking ball accurately under spring pressure from the inner tube into a hole of the outer tube. To push together multistage telescopes back enough of the pressure with the thumb nail on the ball at the thickest extract and courageous pushed together, because the balls at the thinner tubes are sufficiently impressed by the edge of the next thicker. An extract only a subset of the most no more than three or four elements required in this construction, the first extract all and then releasing and inserting the thinnest element. Ski poles from aluminum round tube can be fixed infinitely rotating the inner part spreads via a thread jaws that stick inside the outer tube. When aluminum round tube camera tripods first the thickest extract must be considered. The locking is done by a knurled nut on the outer tube. A little faster folding levers are actuated, but do not round profiled pipes.

Surveyor tripods are also locked by folding levers, each of the three legs is made up by two parallel Alurundrohre (or anti-vibration wooden sticks ), between which a block slides with two semi-cylindrical grooves. The telescope tube action here is realized not axially but mirror-symmetrical and flat. Very old photo tripods and easels sometimes have a similar wing- nut extract of wood clamped between two wooden cheeks, which can also be combined with an additional folding step.

Strong mobile crane arms are higher than wide for high buckling and bending resistance in horizontal projection under the weight of the load in cross section. The Telekopauszug driven inboard hydraulic, the locking of up to about five extracts via hydraulic cross bolt. For a good rolling or sliding guide top and bottom of the box section are convex half round or wrinkled, responsive and gewichtsminimiert by welded plates stiffened.

Lighting and camera masts for film, photo, supervision and construction sites carry only relatively light burden and are often pneumatic and so clean booted vertically.

Single-stage vacuum cleaner telescopic tube is often secured against rotation of steel, aluminum or plastic. It can be solved by pressing a button and locks in place about every three inches length adjustment in a groove one.

Props for Betondeckenbau can be adjusted with a pin through punched holes and cross- adjusted with a screw and clamped.

For moderate loose game and good power transfer, it takes a minimum overlap of one element to two times the diameter or more in the longitudinal direction. Serves a Telekoprohr rather only protection against contamination by dust, as contact or optical coverage, it can be connected to machines to run the air spring an office swivel chair or on the handy collapsible telescope also tender and to very low residual - overlap be pulled out.

Just from this construction a lens telescope with pull tube that allows the focusing, the name comes telescopic tube.

The telescope tube is a technical extension of an arm ( jib) in tubular form to reach that bridge, or to fix a desired distance variable.

Known telescopic tube applications are:

• Antennas Car and transistor portable radios.
• Photo tripod with telescopic tubes as tripod and monopod as
• Extendable telescopes of the old sailors and today Spotting Scopes
• Hydraulic cylinder
• Air refueling with the telescope tube tank
• Vacuum cleaner telescopic tube
• As telescopic tube gun in ejection seats for the rescue committee at an air plight of military aircraft
• Telescopic rod for fishing
• Teleskopschlagstock
• Telescopic walking stick, for example, Nordic walking
• Telescopic pole to a tree saw
• Telescopic pole for window cleaning at altitudes of three meters, for example, ( Winter Garden )
• Telescopic drawbar of a trailer truck that pulls the trailer automatically tempo dependent Streamlined close to the towing vehicle

In box shape, such as square, rectangular, trapezoidal or triangular, telescopic tubes are used in:

• Truck Crane
• Hydraulic ramp
• Mobile Crane
• Telescopic crane
• Telehandler
• Telescopic mast (Fire ) and telescopic mast (component )
• Telescopic measuring rod (or telescope meters) with built-in tape measure for interior measurements and outdoor measurements; for authorities, traffic police, building surveying and carriers for cargo survey - as certified versions

Like this:

• Telescopic spring, in a pruning shears
• Telescoping wound paper tubes as a joke item or magic trick
• Number of inner side stuck hollow cubes made ​​of plastic, which can be stacked to tower
• Intra -side hollow russian dolls matryoshka

• Component