IF WIT… | MODEL CONSTRUCTION

A quick key. Participants NTTM Novokuibyshevsk a freight motor transport enterprise Governance transport control embedded high-speed universal wrench for screwing of pins. Thanks to the use of replaceable liners with Central threaded holes for different diameters of Pins it can be used for screwing studs of any sizes.

The key comprises a hollow body, springs, stopper, studs, cone bearing and liner. Before you start working in the body of the key insert with a thread corresponding to the size of the studs. When screwing to the shank of the stopper is worn on the arm, when the mechanical actuator key mounted in the Chuck. During rotation of the tool insert is screwed on the stud and deepens it in detail. Simultaneously, under the action of the spring, the shutter is held in the lower end position of the finger is included in the horizontal part of the groove, providing an automatic locking with the upper end of the stud.

Universal spillovers:

1 — body, 2 — spring, 3 — shutter, 4 — finger, 5 — cone seat, 6 — liner.

The return stroke of the key the finger out of the horizontal part of the groove in the vertical thrust and removes the heel from the end — key easily fastened with the set detail studs.

Blanket for concrete. Like a thick carpet 400X1500X40 mm it is spread on the surface of newly laid concrete by heating it and thereby accelerating adhesion, solidification and drying.

Portable construction heater-covers suggested by the participants NTTM Kuibyshev Institute of civil engineering named after A. I. Mikoyan. They have found wide application in construction sites “Kuybyshevgidrostroya”, where are used for active heat treatment of concrete and reinforced concrete structures of thickness up to 250 mm with one-sided heating and to 500 mm for two-sided.

Construction heater:

1, 5 — rubberized fabric, 2 — mesh heaters, 3 — glass, 4 — blastcleaning.

In the context of the blanket is a layered “cake”. The role of “scabs” in it performs a rubberized fabric, forming a water resistant outer shell. Immediately followed by two layers of mesh heaters, separated by vlastelinom. They laid a thick insulating layer of glass wool. Heating elements made in the form of a mesh of strips with a width of 250 mm placed at a distance of 100 mm from each other and connected in series are soldered with copper plates.

The maximum temperature achieved by the heaters 180° on the contact surface “blanket — concrete” to 80°.

The blanket can be used for many other construction needs: heating of the soil in winter, drying and heating of floors, the grounds under a soft roof.

The muscles of hydraulics. Key for tightening the screws is still a manual tool, but this operation is amenable to mechanization difficult. However, on Assembly lines have long been used by pneumatic or electrosecurity. But, first, in stationary conditions of the enterprise, and secondly, with limited rotational loads transmitted on workers ‘ hands. But what if the installation is in the field of, say, the laying of oil or gas pipeline, and the screw have nuts the size of a saucer?

To facilitate such a time-consuming operation is called the mechanized complex is a tool developed by participants NTTM, innovators trust “Neftekhimmontazh” “Glavneftemontazh” minmontazhspetsstroj of the USSR. This is a device for tightening threaded connections of large diameter on the flanges of piping and equipment operating under high pressure. It consists of a portable pumping station gidrotartrata with brackets and set of special spanner wrenches.

Pumping station, creating a through the high pressure hose that is needed on the instrument, going from a single piston pump, oil tank with manometer and boring machines, performing the role of the drive. The reciprocating movement of the pump plunger attaches the eccentric roller fitted on the spindle of the machine and push while rotating the plunger head.

Complex tool:

1 — bracket hydrospanner, 2 — hose, 3 — gidrotartrat, 4 — handle, 5 — tipped plunger, 6 — finger, 7 — crest, 8 — key, 9 — flange, 10 — manometer, 11 — pump (NSD-400), 12 — eccentric roller, 13 — elektroversiya machine (IE-1023), 14 — oil tank.

Screwed on the nut put a special key with a special comb on the lever for engagement with the tip of gidrotartrata. Gidrotartrat on the bracket with a hole of suitable diameter is mounted on the neighboring screwed the nut. The thumb tip of the plunger of the Jack is included in a corresponding groove of the comb key. The pump is activated, and under the fluid pressure (200 kgf/cm²) through a tip of the plunger presses the arm key, creating a stress in excess of 5 thousand kgs. This allows you to effortlessly tighten the nut with the diameter of the threaded holes up to 102 mm and a size of the key up to 146 mm.

Using a complex tool, you can also loosen threaded connections of large diameters, selecting in each case the appropriate wrench and bracket for gidrotartrata.

Tamer vibration. In this unusual role, the air in the pneumatic tool, introduced participants NTTM at the Kolomna diesel locomotive plant named after V. V. Kuibyshev. For processing grinding heads hard to reach areas in the dies, molds and complex parts here, used small machine, powered by compressed air. Novelty favorably with the existing tool. One of the important advantages lies in the fact that her arm is designed for damping vibrations occurring during operation.

The machine has the starter, pneumatic vane motor, the mount of the grinding head, spindle and handle. When you click on the lever of the starting device of the compressed air supplied to the air motor. After going through it, he falls through the hole in the housing directly into the cavity of the handle. This creates an air cushion low compared to the supplied to the engine pressure. This design arm significantly reduces the harmful effects of vibration on workers ‘ hands. The introduction of machines makes it easier to perform heavy operations, increases productivity and quality of work.

Soft sander:

1 — starter, 2 — vane air motor, 3 — vibration isolation arm, 4 — arm, 5 — air inlet, 6 — shaft, 7 — a clamping head.

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