SU897979A1 - Support of tent for sheltering a surface being concrete-coated - Google Patents

Description

one

The invention relates to the construction and can be used to protect the concrete surface from atmospheric influences with the help of a tent resting on freshly laid concrete.

Closest to this technical solution is the support of the tent to protect the concreted surface, including the stand and the shoe C.

The shape of the shoe is due to the need to maintain free under-bed space for the production of works. This also limits the size of the shoe. Due to the rigid connection between the shoe and the strut, when the strut is made of fresh concrete, the shoe moves in a straight line, and a significant vacuum (suction) occurs under the bottom of the shoe and the concrete. This requires, when extracting a support from freshly laid concrete, a large amount of energy and manual labor to liquefy the concrete under the shoe using a hand-held vibrator, or to build up the supporting structures of the tent and increase the power of the support extraction mechanism.

The purpose of the invention is to reduce operational labor costs and energy costs for extracting a support from fresh concrete.

The goal is achieved by the fact that in the support of the tent for protection

10 concreted surface, including the rack and the shoe, the shoe to the rack is attached using a hinge and a return spring, and the hinge is cylindrical, and its axis

15 is normal to the reference axis

FIG. 1 shows the lower part, the supports when supporting concrete laid concrete, in FIG. 2 - the lower part of the support when it is extracted from freshly laid concrete.

The support consists of a stand 1, equipped with a bracket 2, and a shoe 3 with eyelets 4. An axis 5 is inserted into the holes of bracket 2 and eyelets 4. On the other side of the supporting axis, Bayim 3 and the rack 1 are connected by a return spring 6. For the boot buckle from falling into His garbage rack has a cap 7.

The support works as follows. Before supporting the concrete with the force of the initial tension of the spring 6, the shoe 3 is pressed against its bottom I by its bottom I. In this position, the shoe 3 is also supported by the concrete. When extracting from newly laid concrete under the bottom of the shoe 3 and concrete, a vacuum appears (suction cup), as a result of which the shoe 3 rotates around axis 5. The rotation occurs until the wall of the shoe 3 stops against the bracket 2. At the same time, the vacuum reaches a maximum near the axis. 5 edges of the bottom of the shoe 3 and decreases to the far edge of the bottom, where it disappears completely. This reduces the resistance of the concrete mix at the beginning of the support movement. After extraction of the bottom edge of the shoe 3 from the concrete 5 to the axis 5, the access opens and the suction disappears. When the entire shoe 3 is removed from the concrete, it returns to the initial position with a return spring 6.

979794

The use of the tent support structure in the production of concrete work in winter conditions or in summer, if it is necessary to protect the concrete from solar radiation, reduces energy costs and removing support from freshly laid concrete, reduces labor costs for these works, reduces the amount of repair and restoration (Q works and increase the pace of concrete placement.

Claims (1)

1. USSR author's certificate No. 441767, cl. E Q4 B 1 / ZAZ, 1973. 7 / / / /