Chisels Parts

 News  Comments Off
Feb 252012
 

Flange Bolt soedinenie.Raschet soedineniya.Bolt (from the German. Bolt), fastener, usually a rod with a 6-sided or square-head screw for screwing the nuts. In terms of machine parts more general concept fastener is a screw. Loosen the screws, depending on the type of threaded connection is used the following versions: 1) the screws and nuts, commonly called bolts; 2) screws, screw-fastened to one of the parts. Bolts used: a) to bond parts are not very thick, plates, flanges, bars in the presence of space for the location of the bolt head and nut, and b) to bond the parts from materials that do not provide sufficient reliability and durability of the thread, and c) when the need for frequent screwing and unscrewing.

In bolts, screws, studs used metric thread, which is the main thread and has a triangular profile angle at the vertex 600. Metric threads are divided into large and small steps. Profiles of geometrically similar. Adopted for the main thread with a big step. The static load carrying capacity of this thread above and less effect on strength protovleniya errors and wear than fine pitch thread. Endurance limit of high-strength steel screws decreases with decreasing pitch, and screws (bolts) of low-carbon steels increases. The technical background literature, standardized and most widely fasteners with the name 'BOLT' regardless of whether they will be fastened with a nut or screwed into the part. The shape of the head bolts (screws) are divided to: a) capture tool outside the head (hexagon or square), b) Chisels inside and from the end of the head (with Allen), and c) prevent the crank (with protrusions, is laid in nests or with two parallel edges, is laid in the grooves).

Slings Rope

 News  Comments Off
Feb 192012
 

During the lifting slings and not stretch or deform the load and, furthermore, do no harm to people working with them (you can do work, not putting spetsrukavitsy. Textile slings relatively more expensive than other types of slings. Apply this type of sling in the normal way of life, to move cargo up to 1 ton, made of brittle materials, in addition, they are used in machine building, aviation, and various kinds industry. Slings Rope is a rope twisted out of two or more ropes, which are held together by a ring of steel. The number of ropes slings and accessories for the entrainment of goods depend on raised by the properties of luggage. But most often this type of sling used to move heavy loads of large dimensions, for which there are openings for entrainment.

Rope lines are not broken at once, you can make them replacement at the initial stage of destruction. Due to this property this type of sling is suitable for raising the important baggage, where large numbers of people and various equipment. Although in general these lines are resistant even to sudden loads. In rope slings a lot of advantages, but there are drawbacks. Basic – their highest weight. In addition, these lines should not be used in aggressive environments and for lifting loads that require delicate handling. Continued straps are welded to the chain links of a chain made of ductile material.

Chain slings, welded steel are heavy, but if a substance is applied to the chain links of a high-tech alloy, the severity of their decline. This type of sling can bear weight of cargo even with sharp edges. It is very flexible, which is very convenient for loading and unloading luggage. By virtue of the fact that the links of the slings are made of durable material, the product itself has a long life and resistant to high temperature extremes and corrosion. There are several types of chain slings, they are classified by the number of tangled branches and are used for certain types of goods. Direct relationship: the overall and heavier the loads, the more branches in the chain (one, two, three -, chetyrehvetvevye lines). There are also chain slings vetvevye and generic lines. Slings chain of high-strength components for Class 8, are made of steel, the process of breaking the resistance of which is 80 kgf/mm2. These parts have high strength, light weight and durable they are. Lac, which covers the surface of parts of lines, protects them from the influence of humidity and various chemically aggressive environments. Properties capacity when using this type of lines at -40 – 200 C is not lost. At higher temperatures gruzropodemnost reduced by 10%.

Build Oven

 News  Comments Off
Feb 122012
 

Construction of furnaces not exceeding 750 kg is allowed on the floor, provided that it is strong enough and the board do not bend when walking. But it is better to build furnaces to separate them for the foundation. Construction stoves weighing over 750 kg necessarily require a separate device a solid foundation. If the soil moist, you should use a brick, iron ore, as usual brick can deteriorate from moisture. Part of the foundation, located in raw ground, can be laid out on the rubble of 150-250 mm above ground level, align it, have a waterproof and the rest of the place of bricks. From these materials build foundations for smoke truby.Razmery foundations in terms of wider base of the oven for at least 5 cm in size all storony.Po basement dug a pit whose depth depends on the density of the soil. With its strong enough soil depth can be from 0.2 to 0.5 m.Dno pit level up, and If the soil is weak, then it is compacted heavy tamper.

Only then will proceed to the masonry. The first row of broken do (small) dry stone or brick, that is, without mortar, sealing it blows compaction. Thoroughly compacted stones poured grout (pryskom). After that, begin laying the main, using mortar of 1:3-1:6. To save the cement used complex or mixed solutions. Under their foundations are in ratio of 1:2:8 or 1:1:9, that is one part of cement take one to two parts lime putty and eight or nine parts sand.

The Truck

 News  Comments Off
Feb 052012
 

They have reduced energy consumption, high durability, power and security. In addition, the automatic braking expelled spontaneously roll back the machine as a horizontal or inclined at poverhnosti.Spetsialnye trebovaniyPogruzchiki used to in harsh and extreme conditions of high or low temperatures or high humidity, for example, in the holds of ships or in refrigerated warehouses or in steel mills, but reliable engine should provide a high level of protection against corrosion, dust and extreme temperatures. For work in hazardous locations requires special explosion-proof forklifts that are being offered next proizvoditeley.Vysota gruzVybor lifting of a model truck is also due to parameters such as lift height. The standard loader can lift loads to a height of 3 m. Thus, it can store loads on the third tier shelving. Trucks fitted with three-section mast, capable of lifting cargo to even greater heights. For work in confined spaces, such as cargo containers or rail cars, the truck must be equipped with a function to free movement, that is, without lifting Lifting gruzopodemnika.Pomimo main characteristics when choosing a truck to be taken into account such parameters as the type of forklift (except fork loader can be equipped with interchangeable attachments, such as grip for drums), type of transmission (hydrostatic, hydrodynamic, mechanical), brakes, tires (pneumatic, solid, bandage) and its overall size, fork length, and others. If you choose a forklift for heavy work, you should pay attention to such characteristics of the speed of raising and lowering, and maneuverability t.d.Marshrut transportation, and as the state of the surface on which the work truck, will also directly affect its performance.

© 2012 Get PhoneTones Suffusion theme by Sayontan Sinha