CN108104487A - Hinged truss is can compensate for expand with heat and contract with cold the device of deformation - Google Patents

Abstract

The invention belongs to the technical field of mechanical equipment, and in particular relates to a device capable of compensating the thermal expansion and contraction deformation of a hinged truss, which is characterized in that it includes a circular hinged hole set on the hinged support, and a circular hinged hole set on the circular hinged hole Circular gasket, fixedly connected to the gland on the circular hinge hole of the hinge support through a set of bolts, the circular gasket is set between the gland and the circular hinge hole, and the circular gasket is provided with an eccentric through hole . The invention has simple structure and convenient installation, can compensate the heat expansion and contraction of the hinged truss in a large environment with large temperature difference changes, and realizes convenient installation of the truss and the hinge support.

Description

A device that can compensate for thermal expansion and contraction of hinged trusses

technical field

The invention belongs to the technical field of mechanical equipment, and in particular relates to a device capable of compensating the thermal expansion and contraction deformation of a hinged truss.

Background technique

During the truss installation process, the hinge bracket is usually fixed first, and then the two ends of the truss are hinged on the hinge bracket through pins. If the temperature difference in the installation environment changes greatly, the truss will be elastically deformed due to thermal expansion and contraction, and one end of the truss is hinged. It is difficult to align the installation hole at the other end with the hinge hole of the hinge support. During the construction process, there are installation examples of using hot air to ensure the constant temperature of the truss to control deformation, and there are also measures to decompose the truss into multiple parts to reduce the amount of deformation. More It is to wait for the weather conditions to stabilize. These measures increase the manufacturing cost of materials, prolong the construction period, and the construction risk is relatively high. With the large size of truss specifications, the precision of construction period and the new form of steel structure installation modularization, new innovations are needed for the hinged structure of trusses and hinge supports to facilitate the installation of trusses.

Contents of the invention

The object of the present invention is to provide a device capable of compensating the thermal expansion and contraction deformation of the hinged truss.

The purpose of the present invention is achieved through the following technical solutions:

The device for compensating the thermal expansion and contraction deformation of the hinged truss of the present invention is characterized in that it includes a circular hinge hole set on the hinge support, and the circular gasket set on the circular hinge hole is fixed by a set of bolts. The gland connected to the circular hinge hole of the hinge support, the circular gasket is arranged between the gland and the circular hinge hole, and the circular gasket is provided With eccentric through hole.

The diameter of the circular spacer is 05.mm-1.5mm smaller than the inner diameter of the circular hinge hole.

The circular gasket is made of fluororubber material.

Advantages of the present invention:

The device capable of compensating thermal expansion and contraction of hinged trusses of the present invention has a simple structure and is easy to install, and can compensate thermal expansions and contractions of hinged trusses in a large environment with large temperature differences, thereby realizing convenient installation of trusses and hinge supports.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

Fig. 2 is an A-A view of Fig. 1 of the present invention.

Detailed ways

The specific implementation manner of the present invention will be further described below in conjunction with the accompanying drawings.

As shown in Figures 1 and 2, the device of the present invention that can compensate for the thermal expansion and contraction of the hinged truss is characterized in that it includes a circular hinge hole set on the hinge support 1, and a circular hinge hole set on the circular hinge hole. Shaped gasket 3, fixedly connected to the gland 2 on the circular hinge hole of the hinge support 1 through a set of bolts, the circular gasket 3 is arranged on the gland 2 and the circular Between the hinge holes, the circular gasket 3 is provided with an eccentric through hole 6 .

The diameter of the circular spacer 3 is 05.mm-1.5mm smaller than the inner diameter of the circular hinged hole.

The circular gasket 3 is made of fluororubber material.

During the actual installation of the truss 5, the hinge support 1 is generally fixed first, and then the two ends of the truss 5 are hinged to the hinge support 1 through pins 4. If the temperature difference in the installation environment changes greatly, the truss 5 will expand and cool due to thermal expansion. Shrinkage produces elastic deformation, and one end of the truss 5 is hinged, and the mounting hole at the other end is difficult to align with the hinged hole of the hinge support 1, so construction cannot be performed. And the present invention, owing to open eccentric through-hole 6 on circular gasket 3, circular gasket 3 can rotate freely in the circular hinged hole of hinge support 1, by the eccentric through-hole 6 of circular gasket 3 and The change in the relative position of the hinge point at the other end of the truss 5 realizes the compensation for the thermal expansion and contraction of the truss 5 , the alignment of the installation hole of the truss 5 and the eccentric through hole 6 of the circular gasket 3 is easy, and finally the pin 4 is embedded in the installation hole of the truss 5 and the circle The eccentric through hole 6 of the shaped gasket 3 realizes the hinge connection between the truss 5 and the hinge support 1; the present invention locks the circular gasket 3 on the circular hinge hole of the hinge support 1 through the gland 2 to prevent the circular The gasket 3 falls off. After the installation is completed, the internal friction between the circular gasket 3 and the gland 2 can also be adjusted by tightening and loosening the bolts. When the deformation force of the truss 5 exceeds a certain range, the circular gasket 3 rotates, and the truss 5 deformation compensation, reducing the structural stress.

The device capable of compensating thermal expansion and contraction of hinged trusses of the present invention has a simple structure and is easy to install, and can compensate thermal expansions and contractions of hinged trusses in a large environment with large temperature differences, thereby realizing convenient installation of trusses 5 and hinge supports 1 .

Claims (3)

1. A device capable of compensating thermal expansion and contraction of a hinged truss, characterized in that it includes a circular hinge hole arranged on the hinge support, a circular gasket arranged on the circular hinge hole, through a set of bolts The gland fixedly connected to the circular hinge hole of the hinge support, the circular gasket is arranged between the gland and the circular hinge hole, the circular gasket With eccentric through hole. 2. The device capable of compensating the thermal expansion and contraction deformation of the hinged truss according to claim 1, characterized in that the diameter of the circular spacer is smaller than the inner diameter of the circular hinge hole 05.mm-1.5mm. 3. The device capable of compensating the thermal expansion and contraction deformation of the hinged truss according to claim 1 or 2, characterized in that the circular gasket is made of fluororubber.