CN202322074U - Portal frame - Google Patents

Abstract

The utility model discloses a gantry frame, which comprises a gantry frame body and a suspension plate arranged on the inner side of the gantry frame body by means of a steel wire rope. Two sets of wire rope anti-break protection mechanisms with the same structure are symmetrically arranged on both sides of the hanging pan; the advantage is that the swing rod, connecting rod and stopper in the utility model are all connected in a hinged manner. Once the wire rope breaks, The return spring quickly pulls the stopper to rotate, and the part located outside the side frame of the suspension pan is inserted between the two columns of the gantry frame body. When the suspension pan falls to the stopper and the nearest gantry cross brace below, the suspension pan stops falling, effectively Prevent the occurrence of hanging pan fall accidents.

Description

a gantry

technical field

The utility model relates to a hoisting device used in building construction, in particular to a gantry frame.

Background technique

The gantry is a vertical transport machine commonly used in the construction of low-rise buildings in China. The main function of the gantry is to send materials from low to high or from high to low. It has a simple structure and is relatively easy to install, dismantle and use. Convenience and other advantages, so it is widely used in the construction industry.

Most of the gantry frames currently in use do not have safe and reliable rope breakage protection devices, or the rope breakage protection devices are complex and poor in reliability. The major accidents in which the wire rope was broken and the hanging pan suddenly fell due to the failure of the hoist and other reasons not only caused huge property losses, but also may cause heavy casualties. , The derrick material hoist must be equipped with an anti-broken rope safety protection device to prevent the suspension pan from falling when the suspension pan is suspended or the rope is broken during operation.

Utility model content

The technical problem to be solved by the utility model is to provide a gantry frame that can prevent the hanging pan from falling when the hanging pan is suspended or the rope breaks during operation, and can avoid economic losses and casualties caused by the hanging pan falling.

The design concept of the utility model is realized in this way. Most of the simple anti-broken rope protection devices adopted on the existing gantry are wedge type, and their safety factor is low. The utility model adopts a four-bar linkage mechanism combined with a return spring The technical means to prevent the hanging plate from falling freely when the wire rope breaks has a simple structure, and the swing rod, connecting rod and stopper are connected in a hinged manner. Once the wire rope breaks, the return spring quickly pulls the stopper to rotate, and The outer part of the side frame of the hanging pan is inserted between the two columns of the gantry frame body. When the hanging pan falls to the stopper and the nearest gantry cross brace below, the hanging pan stops falling, effectively preventing accidents.

In order to solve the above-mentioned technical problems, the technical solution adopted by the utility model is: a gantry frame, including a gantry frame body and a hanging pan arranged inside the gantry frame body by means of a steel wire rope, the key improvement of which is: it also includes a wire rope anti-break rope Device; the wire rope breakage prevention device includes two sets of wire rope breakage prevention protection mechanisms symmetrically arranged on both sides of the suspension pan.

The wire rope anti-break protection mechanism includes a guide wheel, a swing rod, a connecting rod, a block and a return spring; The steel wire rope of the pan is installed in cooperation; the stopper includes two L-shaped steel plates hinged in parallel on the side frame of the suspension pan, the inflection points of the two L-shaped steel plates are hinged with the side frame of the suspension pan, and the opening is installed downwards, and the two One L-shaped steel plate is located between the inner end of the suspension pan and the lower part of the side frame of the suspension pan, and a return spring is respectively arranged; the two L-shaped steel plates located at the inner end of the suspension pan are respectively hinged with the open end of the swing rod by means of a connecting rod.

The beneficial effect produced by adopting the above-mentioned technical solution is that the swing rod, the connecting rod and the stop block in the utility model are all connected in a hinged manner. Once the wire rope breaks, the return spring quickly pulls the stop block to rotate, which is located outside the side frame of the suspension pan The part of the hanging pan is inserted between the two columns of the gantry frame body. When the hanging pan falls to the stopper and the nearest gantry cross brace below, the hanging pan stops falling, effectively preventing accidents and avoiding losses to the construction company.

Description of drawings

Below in conjunction with accompanying drawing and specific embodiment, the utility model is described in further detail.

Fig. 1 is a structural representation of the utility model;

Fig. 2 is a partial structure diagram of the wire rope anti-broken rope device in the utility model.

In the figure: 1, steel wire rope; 2, guide wheel; 3, swing rod; 4, gantry frame body; 5, connecting rod; 6, block; 7, return spring;

Detailed ways

The utility model discloses a gantry frame (as shown in Fig. 1 and Fig. 2 ), which comprises a gantry frame body 4 and a suspension plate 8 arranged inside the gantry frame body 4 by means of a steel wire rope 1, and its key improvement lies in: it also includes a steel wire rope Rope breakage prevention device: the wire rope breakage prevention device includes two sets of wire rope breakage prevention protection mechanisms symmetrically arranged on both sides of the suspension pan 8 with the same structure.

The wire rope anti-break protection mechanism (see Figure 2) includes a guide wheel 2, a swing rod 3, a connecting rod 5, a stopper 6 and a return spring 7; the guide wheel 2 is set on the The hanging pan 8 is mounted on the sky beam and is cooperating with the steel wire rope 1 used for hoisting the hanging pan 8; the stopper 6 includes two L-shaped steel plates hinged in parallel on the side frame of the hanging pan 8, and the two L-shaped steel plates The inflection point is hinged with the side frame of the suspension pan 8, and the opening is installed downwards. The two L-shaped steel plates are respectively provided with return springs 7 between one end of the inner side of the suspension pan 8 and the lower part of the side frame of the suspension pan 8; the two L-shaped steel plates One end located at the inner side of the hanging pan 8 is hinged to the open end of the swing rod 3 by means of the connecting rod 5 respectively.

In the specific application process, a four-bar linkage mechanism is formed between the swing rod, the connecting rod, the stopper and the suspension pan, and the swing rod is hinged to the sky beam of the suspension pan, and the stopper is hinged to the side frame of the suspension pan. There are also two return springs between the inner part and the lower part of the side frame, and guide wheels are provided on the opposite sides of the two sets of pendulum bars. Both pass through the two guide wheels. When the wire rope is in normal use, due to the constraints of the tension of the wire rope, the two sets of swing rods are tightened inward, and the swing rod drives the stopper to rotate through the connecting rod, so that the stopper is located on the side of the hanging pan. The outer part of the frame is drawn inward, and the pulling force of the wire rope and the pulling force of the return spring balance each other, and the return spring can also play the role of tensioning the wire rope; when the wire rope breaks, because the tension of the wire rope disappears, the return spring pulls the stopper Rotate, the part of the block located outside the side frame of the suspension pan rotates outwards and extends into the space between the two columns of the gantry frame body. And the constraint of the swing rod, the rotation angle is limited, so the cooperation between the cross brace and the stopper can prevent the suspension pan from falling, effectively prevent accidents, avoid economic losses to the construction company, and avoid casualties caused by accidents.

Claims (2)

1. a portal frame comprises gantry support body (4) and is located at the inboard hanging scaffold (8) of gantry support body (4) by means of steel rope (1), it is characterized in that: also comprise steel rope anti-break rope device; Said steel rope anti-break rope device comprises that two covers are symmetrically set in the identical anti-disconnected protection mechanism of steel rope of two nested structures of said hanging scaffold (8) both sides.

2. a kind of portal frame according to claim 1 is characterized in that: the anti-disconnected protection mechanism of said steel rope comprises track adjusting wheel (2), fork (3), connecting rod (5), block (6) and retracing spring (7); Said track adjusting wheel (2) is located at hanging scaffold (8) Tian Liangshang and is cooperated installation with the steel rope that is used to lift by crane hanging scaffold (8) (1) by means of two forks that laterally arrange (3); Said block (6) comprises two blocks of parallel L shaped steel plates that are articulated on said hanging scaffold (8) side frame; Two L shaped steel plate flex points and hanging scaffold (8) side frame is hinged and Open Side Down installs, said two blocks of L shaped steel plates are positioned between inboard end of hanging scaffold (8) and hanging scaffold (8) the side frame bottom retracing spring (7) are set respectively; It is hinged by means of connecting rod (5) and said fork (3) open end respectively that said two blocks of L shaped steel plates are positioned at the inboard end of hanging scaffold (8).

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