CN202248511U

CN202248511U - Adjustable equal-strength cantilever beam

Info

Publication number: CN202248511U
Application number: CN2011203075247U
Authority: CN
Inventors: 潘素娟; 孙文秀
Original assignee: 栾清杨
Priority date: 2011-08-23
Filing date: 2011-08-23
Publication date: 2012-05-30
Anticipated expiration: 2021-08-23

Abstract

An adjustable equal-strength cantilever beam belongs to the technical field of cantilever beams for construction, comprises a fixing frame, a cantilever beam body and a support frame and further comprises a rotating shaft, a bending rod, a fixed rotating shaft, a fixing ring and an extensible beam. The cantilever beam body is fixed on the fixing frame, the support frame is fixed on the fixing frame and located below the cantilever beam body so as to support the cantilever beam body, the extensible beam is connected with the cantilever beam body through an extensible rod, the rotating shaft is fixed on the fixing frame, the bending rod is connected with the fixing frame through the rotating shaft, the fixed rotating shaft is arranged on the bending rod, the fixing ring is disposed on the extensible beam, and the bending rod is connected with the extensible beam through the fixing ring. The cantilever beam body and the extensible beam are both in the shape of an isosceles trapezoid. Compared with the prior art, the extensible beam is arranged, then the length of the cantilever beam body available is increased, and therefore the adjustable equal-strength cantilever beam is suitable for different construction sites. The cantilever beam body and the extensible beam are arranged to be in the shape of an isosceles trapezoid, loading stress is equal everywhere, and damage to the cantilever beam body caused by uneven stress is reduced.

Description

A kind of adjustable equi intensity cantilever

Technical field

The utility model relates to a kind of adjustable equi intensity cantilever, belongs to semi girder technical field for building.

Background technology

Semi girder in building field by widespread usage; Present employed semi girder basically all is the rectangular structure of regular shape; The length of cantilever can not be adjusted, and under the concentrated force loading, axial stress is all unequal everywhere on the surface; Semi girder just is destroyed than being easier to like this, causes the use of semi girder to be restricted.

Summary of the invention

In view of the defective that prior art exists, the purpose of the utility model provides the adjustable equi intensity cantilever that a kind of jib-length is adjustable, loading stress equates everywhere.

For realizing above-mentioned purpose, the utility model solves through following technical scheme: a kind of adjustable equi intensity cantilever comprises fixed mount, semi girder, bracing frame; Also comprise rotating shaft, bent rod, fixed rotating shaft, retainer ring, extensible canopy, said semi girder is fixed on the fixed mount, and bracing frame is fixed on the fixed mount; And be positioned at support cantilever beam below the semi girder, and extensible canopy is connected with semi girder through expansion link, and rotating shaft is fixed on the fixed mount; Bent rod is connected with fixed mount through rotating shaft; Fixed rotating shaft is set on the bent rod, retainer ring is set on the extensible canopy, bent rod is connected with extensible canopy through retainer ring.

Said semi girder and extensible canopy all are the shapes of isosceles trapezoid.

Compared with prior art, the utility model is provided with extensible canopy, and then the length of available semi girder increases, and is applicable to different project sites; Semi girder and extensible canopy are arranged to the shape of isosceles trapezoid, and loading stress is equated everywhere, have reduced that because of unbalance stress semi girder is damaged.

Description of drawings

Fig. 1 is a kind of adjustable equi intensity cantilever structure diagram;

Fig. 2 is Fig. 1 vertical view.

Among the figure: 1, fixed mount, 2, semi girder, 3, extensible canopy, 4, bracing frame, 5, rotating shaft, 6, bent rod, 7, fixed rotating shaft, 8, retainer ring.

The specific embodiment

Fig. 1, a kind of adjustable equi intensity cantilever shown in 2 comprise fixed mount 1, semi girder 2, bracing frame 4, also comprise extensible canopy 3, rotating shaft 5, bent rod 6, fixed rotating shaft 7, retainer ring 8; Said semi girder 2 is fixed on the fixed mount 1, and bracing frame 4 is fixed on the fixed mount 1, and is positioned at semi girder 2 following support cantilever beams 2; Extensible canopy 3 is connected with semi girder 2 through expansion link; Rotating shaft 5 is fixed on the fixed mount 1, and bent rod 6 is connected with fixed mount 1 through rotating shaft 5, and fixed rotating shaft 7 is set on the bent rod; Retainer ring 8 is set on the extensible canopy 3, and bent rod 6 is connected with extensible canopy 3 through retainer ring 8.

Said semi girder 2 all is the shape of isosceles trapezoid with extensible canopy 3.

Claims

1. adjustable equi intensity cantilever; Comprise fixed mount (1), semi girder (2), bracing frame (4), it is characterized in that also comprising extensible canopy (3), rotating shaft (5), bent rod (6), fixed rotating shaft (7), retainer ring (8), said semi girder (2) is fixed on the fixed mount (1); Bracing frame (4) is fixed on the fixed mount (1); And be positioned at the following support cantilever beam (2) of semi girder (2), and extensible canopy (3) is connected with semi girder (2) through expansion link, and rotating shaft (5) is fixed on the fixed mount (1); Bent rod (6) is connected with fixed mount (1) through rotating shaft (5); Fixed rotating shaft (7) is set on the bent rod, retainer ring (8) is set on the extensible canopy (3), bent rod (6) is connected with extensible canopy (3) through retainer ring (8).

2. a kind of adjustable equi intensity cantilever according to claim 1 is characterized in that said semi girder (2) and extensible canopy (3) all are the shapes of isosceles trapezoid.