SU1004580A1 - Guiding block of reinforcement-wrapping machine - Google Patents

Description

The invention relates to devices for prestressing cylindrical structures, for example, reinforced concrete tanks by winding tensioned reinforcement on their side surface. Known devices for winding rebar (reeling machines) contain the overhead and upper carriages, the winch for lifting the overhead carriage, the rebar tensioning mechanism and the power actuator 1. In these machines, the rebar laying step on the lateral surface of cylindrical reinforced concrete structures is supported manually by the operator using Winches for lifting the overhead trolley. To lift the overhead trolley, considerable operator effort is required, constant attention, which makes it difficult to maintain a given winding pitch. Closest to the present invention, there is a guide block of the reinforcement-winding machine mounted on the carriage and containing a traverse bracket to which the disk of the block is hinged, and the ends of the crosshead are mounted in bearings with hollow housings, through the cavity of one of which tensioned reinforcement 2 is passed. However, despite the presence of a guide block, there remains a need for a mechanism for lifting the carriage reeling machine. The yoke with a disk attached to it can rotate in the bearings and deflect the reinforcement, however, the deviation is not specified by any device, but is determined by the relative position of the carriage and the point of contact of the reinforcement with the lateral surface of the structure. In this case, it is possible to overlap the welded fittings on the previously laid turns or sets, laying the next turns with unacceptable gaps in relation to the previous ones. The known guide block thus provides only a smoothing of the uneven lifting of the trolley of the reinforcement-winding machine. The purpose of the invention is to improve the quality of the product by ensuring uniform fitting of fittings with a given step. The goal is achieved by the fact that the guide block of the reinforcement-winding machine mounted on its trolley and containing a clip of the block and a disk of the block pivotally attached to it, the ends of which are mounted in bearings with hollow housings, through the cavity of one of which tensioned reinforcement, block is passed equipped with a traverse turning mechanism relative to the trolley, made in the form of a worm gear pair, the worm wheel of which is rigidly articulated with the traverse, and the axis of rotation of the worm gear coincides with the axis of rotation of the hollow under ipnikov.

FIG. 1 shows the proposed device, section A-A in FIG. 2; in fig. 2 shows a section BB in FIG. one.

A disk 2 of the guide block is hinged to the clamp-type traverse 1. The ends of the traverse mounted in the bearings 3 with hollow shells. In the supports, the yoke 1 can be rotated relative to the carriage 4 of the reinforcement-coiling machine. To ensure rotation, a rotation mechanism is used, made in the form of a worm pair - a worm gear 5 and a worm 6. The worm gear 5 is rigidly articulated with the crosspiece 1, the axis of rotation of the worm gear coincides with the axis of rotation of the hollow subsuppers 3, in which the spindle turns 1. A worm to b is mechanically connected to the drive 7. The drive is fixed on the carriage 4 of the reinforcement and coiling machine, and the worm is fixed to the 6 to rotate to 6. Tensionary armature 8 passes through the cavity of one of the support 3, which is wound on the side surface b cylindrical structures 9.

The device works as follows.

The tensioned reinforcement 8 passes through the cavity of one of the bearings 3, bends around the disk 2 of the guide block and is laid on the lateral surface of the cylindrical structure 9. Traverse 1 with the disk 2 pivotally attached to it can be rotated in the fastener 3 relative to the cart 4. The disk 2 of the block deflects the tensioned reinforcement 8 and lays it on different parts of the lateral surface of the cylindrical structure 9. To ensure uniform placement of the tension reinforcement with a given step on the surface of the structure 9 serves as a mechanism m of rotation, made in the form of a worm gear pair 5 and 6. Worm b gets rotation from actuator 7, and a worm gear 5 rotates around an axis coinciding with the axis of rotation of the sub-carriers 3. Rotate 1 with hinged arm the disk 2 is attached to it. The armature 8 receives a predetermined deviation and is laid at a predetermined position of the side surface of the cylindrical structure 9.

Due to the use of the proposed invention, it is possible, by varying the speed and direction of rotation of the screw, to set any desired reinforcement installation step and maintain it uniformly or varying according to a certain law during the winding process. The guide block allows, in a number of cases, to simplify the design of the reinforcement and winding machine. For example, when fitting reinforcement into horizontal channels, the need for a complicated mechanism for lifting the trolley is eliminated; reinforcement can be installed to the full height of the channel without moving the trolley using the guide block of the proposed design.

Claims (2)

1. Recommendations for the annular stress reinforcement of cylindrical reinforced concrete structures with reinforcement-winding machines of the ANM-5 models. M., 1970, All-Union Scientific Research Institute for the Construction of Main Pipelines (VNIIST), p. 7, 21. 2. USSR author's certificate No. 204216, cl. E 04 G 21/12, 1968 (prototype). 1 S4 Vb /