SU881273A1 - Unit for tensioning reinforcement rods with anchor devices - Google Patents

Description

(54) INSTALLATION FOR TENSION OF FITTINGS

RODS WITH ANCHOR TOOLS

one

The invention relates to devices for tensioning reinforcement in the manufacture of prestressed concrete products.

A device for tensioning reinforcing rods with anchoring devices is known, comprising a carriage, a trolley shape, with stops and forks, inside which spring-loaded bushings are mounted, on the surfaces of which slots with inclined edges are formed to move the anchoring devices of reinforcing bars JV.

The disadvantage of this installation is the impossibility of stacking rods in several rus.

Closest to the invention is a tensioning device, reinforcing bars with anchoring devices, comprising a form-trolley with stops, a heating device, a rod feeding mechanism and forks 2J.

The disadvantage of this setup is its low productivity.

The purpose of the invention is to increase plant productivity.

For this purpose, the installation for tensioning reinforcing rods with anchoring devices, containing a trolley with supports, a heating device, a mechanism for feeding rods and forks, is equipped with a gantry frame and movable clamp grippers suspended on it, and forks are placed above the supports of the trolley form and pivotally mounted on the portal frame, while the rod feed mechanism is executed in the form of a chain transport connected to the tongs.

Claims (2)

FIG. 1 shows the installation, general view; in fig. 2 is a view A ya of FIG. in fig. 3 - tick-borne grip} in fig.4vid B in fig. 3; in fig. 5 is a scheme for fixing a trolley shape. 3 The installation includes the shape of a trolley 1 with stops 2 for placing reinforcing rods 3 in them in two rus. To ensure the reliability of the installation, a locking mechanism of the trolley-form 1 is provided at the station for laying reinforcing bars 3. It consists of two pairs of pneumatic cylinders 4 and 5 mounted parallel to the moving trolley forms along the rails. On one side are mounted pneumatic cylinders 4, on the rods of which are fixed clamps 6 with a tapered part at the ends, to enter them into the prisms 7 ,. on the other hand, the pneumatic cylinders 5, on the rods of which there are fixed clamps 8 with flat ends that serve as supports for the stops 9. The prisms 7 and the stops 9 are rigidly fixed on the sides of the form-Trolley I. Between the heating devices of the reinforcing bar 3 (not shown) there is a lifting platform 10 with pneumatic cylinders 11 mounted on a subframe 12 For laying reinforcing bars 3 Prisms 13 are installed at the ends of platform 10 to install the attachment equipment a portal frame 14, on which rails 15c are mounted mounted tick-borne claws 16, fitted with wheels 17. Between the cheeks 18, rigidly fixed prisms 19 and swivel prisms 20, preloaded with figured springs 21, are installed. 25 for laying the heated reinforcing bars 3 into the stops 2 of the shape of the grid 1. Each laying mechanism 25 is equipped with forks 25, on the upper planes of which the half-strips 27 are installed, intended started for acceptance and. directing the heated rods 3 into the grooves of the forks i 26 and dp of their subsequent installation into the arms 2 of the form-trolley 1. using pneumatic cylinders 28, on the rods of which the pushers 29 are mounted, equipped with guide rods 30 with cams 31 interacting with the ring switches. The fork arms 26 are suspended on spring rods 32 with stops 33 that interact with the pushers 29. The unit operates as follows. After the trolley-form 1 is supplied to the fasting station of heated reinforcing bars, it is fixed, which includes pneumatic cylinders 5, which push the stops 8, and then pneumatic cylinders 4 turn on the opposite side, install the blades-1 with stops 9 to the support plane of the retainers 8. Then, the prisms 13 of the platform 10 and the heating devices manually insert the reinforcement bars 3, the voltage is applied and they are heated to a predetermined temperature. At this time, using a chain conveyor 22 through a gearbox 23 connected via a coupling to a reversible motor 24, the tongs 16 are mounted above the reinforcement bars 3 of the platform 10. After the reinforcement bars 3 are heated, a signal is given to activate the pneumatic cylinders 11, which raise the platform 10 for transferring the heated rods 3 to the prisms of the clamp grippers 19 and 20, where they are held by the springs 21. After this, the reverse of the electric motor 24 is switched to reverse and the chain conveyor 22 is installed t on the post laying tick clamps 16 with heated reinforcing bars-3. Using special clamps (not shown, the tongs. The grippers 16 are precisely mounted above the stops 2 with the mechanisms for placing the rods 25 installed above them, after which the signal is given to activate the pneumatic cylinders 28, which push the rods 3 through their push rods 29, pushing them out of the tongs 16 , with the installation of 27 forks in half-ribs. Under the action of rods 3, the forks 26 are lowered onto the upper planes. Caps 2 of the form-trolley 1. With the further movement of the pushers 29 anchor heads it slides over the inclined facets of the grippers 26, creating mechanical tension with a predetermined force, perceived by the stops 2 of the form-trolley 1. After the rods are laid, the forks 26 under the action of spring rods 32, and the pushers 29 by the pneumatic cylinders 28 rise to their initial position. This cycle of laying the reinforcement rods of the lower rus is completed and the form-trolley 1 is unsealed by pneumatic cylinders 4 and 5, which is then sent to the next post of the reinforcement rods 3 of the upper rus, where the second Installation is complete. In place of the first trolley shape 1, the following is installed. and the cycle repeats. Claims for tensioning reinforcement rods with anchoring devices, comprising a form trolley with an stop, a heating device, 36 a rod feeding mechanism and forks, characterized in that it is equipped with a portal frame and movable mite clamps suspended on it, and the forks are placed above the trolley shape stops and hinged on the portal frame, while the mechanism for feeding the rods is made in the form of a chain conveyor, connected about with tongs. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 314873, cl. E 04 G 21/12, 1969. 2. USSR author's certificate number 398730, cl. E 04 G 21/12, 1971., t “: I Buff b 17 18 18 Id g nineteen go J and Fi.Z srig.CH i: / 5