CN107399676A - A kind of double girder overhead crane - Google Patents

Abstract

The invention discloses a double-girder bridge crane, which comprises two sets of supporting longitudinal girders, the supporting longitudinal girders of the two groups are installed on the two side walls of the roof of the workshop along the length direction of the workshop, and the supporting longitudinal beams of the two groups are installed along the length direction The first moving track is provided, and mobile devices are installed on the first moving tracks of the two groups, and two sets of supporting beams parallel to each other are fixedly installed between the two groups of moving devices. A second moving track is provided, and a moving car is installed on the two sets of the second moving track, and an electric hoist is installed on the moving car, and the electric hoist is connected to one end of a lifting rope, and the other end of the lifting rope is connected to a balance device. The balance device of the present invention is designed as three sets of support arms, so that the goods at the lower end are subjected to forces in three directions when hoisting, preventing the goods from shaking during hoisting and transportation, ensuring their balance and stability, and improving the performance of the double-girder bridge crane. The safety of lifting cargo.

Description

A double girder bridge crane

technical field

The invention relates to the technical field of cranes, in particular to a double-girder bridge crane.

Background technique

The bridge crane is a lifting device that is horizontally placed over the workshop, warehouse and stockyard for material lifting. The two ends of the bridge crane sit on tall concrete columns or metal supports, shaped like a bridge. The bridge frame of the bridge crane runs longitudinally along the tracks laid on the elevated sides on both sides, which can make full use of the space under the bridge frame to lift materials without being hindered by ground equipment. Bridge cranes can be divided into three types: ordinary bridge cranes, simple beam bridge cranes and special bridge cranes for metallurgy. Simple girder bridge crane is also called girder crane. Its structure is similar to that of ordinary bridge crane, and its lifting capacity, span and working speed are small. The main girder of the bridge frame is a simple cross-section beam composed of I-beam or other section steel and plate steel. A chain hoist or electric hoist is used with a simple trolley as a lifting trolley. The trolley generally runs on the lower flange of the I-beam. Single girder crane is a kind of bridge crane, which is mostly used in conjunction with electric hoist. It is a kind of light lifting equipment with running track. Single-girder cranes are widely used in industrial and mining enterprises. The four traveling wheels on the end beams at both ends move horizontally along the fixed guide rails to carry heavy objects.

When the existing double-girder bridge crane lifts the goods, most of them use multi-strand lifting ropes to lift the goods in the vertical direction. This method makes the goods easy to shake during transportation, and the lifting is unstable. Not only the load on the lifting rope is large, At the same time, it threatens the people and objects near the lifting goods. Therefore, we have designed a double-girder bridge crane to solve the above problems.

Contents of the invention

The purpose of the present invention is to solve the shortcomings in the prior art, and propose a double-girder bridge crane.

In order to achieve the above object, the present invention adopts the following technical solutions:

A double-girder bridge crane, comprising two sets of supporting longitudinal beams, the supporting longitudinal beams of the two groups are installed on the two side walls of the roof of the workshop along the length direction of the workshop, and the supporting longitudinal beams of the two groups are provided with first Moving rails, two groups of first moving rails are equipped with moving devices, and two groups of supporting beams parallel to each other are fixedly installed between the two groups of moving devices, and the supporting beams of the two groups are provided with a second Moving rails, two groups of the second moving rails are equipped with movable vehicles, and electric hoists are installed on the mobile vehicles, and the electric hoists are connected with one end of a lifting rope, and the other end of the lifting rope is fixedly connected with a balance device;

The balance device includes a supporting disc, and the end of the lifting rope away from the electric hoist branches into three sets of connecting ropes, and the ends of the three sets of connecting ropes away from the lifting rope are fixedly connected to the edge of the supporting disc at equal distances, and the supporting Three groups of electric shafts are equidistantly installed on the circumferential side wall of the disk, and one end of the support arm is connected to the rotation of the electric shaft, and a fixed pulley is fixedly installed on the end of the support arm away from the electric shaft, and the upper surface of the support disc is close to the three The positions of the electric rotating shafts of the groups are respectively equipped with hoisting devices, and the hoisting devices are connected with one end of a fixed rope, and the other end of the fixed rope is connected with a connecting device by going around the fixed pulley. The positions of the support arms are provided with oblique supports.

Preferably, the oblique support includes a mounting base, the mounting base is welded on the support disc, and the mounting base is fixedly connected with one end of the oblique support rod, and the other end of the oblique support rod is provided with a support plate, the support A buffer spring is equidistantly arranged on the plate, and the other end of the buffer spring is fixedly connected to the anti-skid plate, and the anti-skid plate is in contact with the support arm.

Preferably, the connecting device is one of a hook and a pneumatic gripper.

Preferably, a rope limiter is arranged above the fixed pulley.

Preferably, the support disc, support arm and diagonal support are all made of high-strength alloy steel.

Compared with the prior art, the beneficial effects of the present invention are: in the present invention, a balancing device is designed at the lifting end of the lifting rope, and the lifting rope and the balancing device are connected at three points to form a stable triangular connection structure, and the balancing device is also It is designed with three sets of support arms, so that the goods at the lower end are subjected to forces in three directions when hoisting, preventing the goods from shaking during hoisting and transportation, ensuring their balance and stability, and improving the safety of goods hoisted by double-girder bridge cranes sex.

Description of drawings

Fig. 1 is the structural representation of a kind of double girder bridge crane that the present invention proposes;

Fig. 2 is the side view of a kind of double-girder bridge crane that the present invention proposes;

Fig. 3 is the structural representation of the balancing device of a kind of double-girder bridge crane that the present invention proposes;

Fig. 4 is the plan view of the balancing device of a kind of double-girder bridge crane proposed by the present invention;

Fig. 5 is a schematic structural diagram of a diagonal support of a double-girder bridge crane proposed by the present invention.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.

Referring to Fig. 1-5, a double-girder bridge crane includes two sets of supporting longitudinal girders 1, two sets of supporting longitudinal girders 1 are installed on the two side walls of the roof of the workshop along the length direction of the workshop, and two sets of supporting longitudinal girders 1 are The first moving track 2 is arranged in the direction, and the moving devices 3 are installed on the first moving tracks 2 of the two groups, and two groups of supporting beams 4 parallel to each other are fixedly installed between the two groups of moving devices 3. The length direction is provided with the second moving track 5, two groups of second moving track 5 are movable mounted with mobile car 6, electric hoist 7 is installed on the mobile car 6, electric hoist 7 is connected with one end of lifting rope 8, lifting rope 8 The other end is fixedly connected with a balance device 9;

The balance device 9 includes a support disc 10, and the lifting rope 8 branches away from the electric hoist 7 to form three sets of connecting ropes, and the ends of the three sets of connecting ropes away from the lifting rope 8 are fixedly connected to the edge of the supporting disc 10 at equidistant distances. Three groups of electric rotating shafts 11 are equidistantly installed on the circumferential side wall of the disc 10, and the electric rotating shaft 11 is rotatably connected to one end of the support arm 12, and the end of the supporting arm 12 away from the electric rotating shaft 11 is fixedly installed with a fixed pulley 13. There is a rope limiter, and the upper surface of the supporting disc 10 is respectively equipped with hoisting devices 14 near the positions of the three groups of electric rotating shafts 11, and the hoisting device 14 is connected with one end of a fixed rope 15, and the other end of the fixed rope 15 goes around the fixed pulley 13 is connected with a connection device 16, the connection device 16 is one of a hook and a pneumatic gripper, the bottom of the support disc 10 is located at the positions of the three sets of support arms 12, and an oblique support 17 is provided. The oblique support 17 includes a mounting base 171, The installation base 171 is welded on the support disc 10, and the installation base 171 is fixedly connected with one end of the inclined support rod 172, the other end of the inclined support rod 172 is provided with a support plate 173, and the support plate 173 is equidistantly provided with buffer springs 174, The other end of the buffer spring 174 is fixedly connected on the anti-skid plate 175, and the anti-skid plate 175 is in contact with the support arm 12, and the support disc 10, the support arm 12 and the diagonal support 17 are all made of high-strength alloy steel.

When the present invention is in use, the moving device 3 moves on the first moving track 2 to realize the movement in the Y direction, and the moving car 6 moves on the second moving track 5 to realize the moving in the X direction. The moving car 6 passes through the electric hoist 7. When hoisting goods, the other end of the hoisting rope 8 connected to the electric hoist 7 is divided into three connecting ropes, which are connected in a triangle with the balance device 9 at three points to form a stable triangle connection structure. The support disc 10 on the balance device 9 Three sets of support arms 12 are arranged equidistantly on the circumferential side wall, which also forms a triangular stable structure, so that the goods at the lower end are subjected to forces in three directions when hoisting, preventing the goods from shaking during hoisting and transportation, and ensuring their balance and stability. , when not in use, the three sets of support arms 12 can be rotated to the top of the support disc 10 through the electric rotating shaft 11, so as to reduce the occupied space of the balance device 9, and the oblique supports 17 play a role in supporting the support arms 12, so that they can To withstand greater tension and lift heavier goods, the setting of the buffer spring 174 enables the support arm 12 to obtain a certain buffer when lifting goods.

The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto, any person familiar with the technical field within the technical scope disclosed in the present invention, according to the technical solution of the present invention Any equivalent replacement or change of the inventive concepts thereof shall fall within the protection scope of the present invention.

Claims (5)

1. A double-girder bridge crane, comprising two groups of supporting longitudinal beams (1), characterized in that the supporting longitudinal beams (1) of the two groups are installed on the two side walls of the workshop top along the length direction of the workshop, and the two groups The supporting longitudinal beam (1) is provided with first moving rails (2) along the length direction, and two groups of first moving rails (2) are equipped with moving devices (3), and the two groups of moving devices (3) There are two groups of mutually parallel support beams (4) fixedly installed between them, the support beams (4) of the two groups are all provided with the second moving track (5) along the length direction, the second moving track (5) of the two groups A mobile car (6) is installed on the mobile car (6), and an electric hoist (7) is installed on the mobile car (6). The electric hoist (7) is connected to one end of a lifting rope (8), and the lifting rope (8) The other end of is connected with balancing device (9); The balance device (9) includes a support disc (10), the end of the lifting rope (8) away from the electric hoist (7) branches into three sets of connecting ropes, and the three sets of connecting ropes are far away from the end of the lifting rope (8) Equidistance is fixedly connected to the edge of the support disc (10), and three groups of electric rotating shafts (11) are equidistantly installed on the circumferential side wall of the supporting disc (10), and the electric rotating shaft (11) is rotatably connected with a support arm (12), the fixed pulley (13) is fixedly installed on the end of the support arm (12) away from the electric rotating shaft (11), and the upper surface of the supporting disc (10) is close to the positions of the three sets of electric rotating shafts (11) A hoisting device (14) is installed respectively, and the hoisting device (14) is connected with an end of a fixed rope (15), and the other end of the fixed rope (15) is connected with a connecting device ( 16), the bottom of the support disc (10) is provided with oblique supports (17) at the positions of the three sets of support arms (12). 2. The double-girder bridge crane according to claim 1, characterized in that, the oblique support (17) includes a mounting base (171), and the mounting base (171) is welded to the support disc (10) , and the installation base (171) is fixedly connected with one end of an inclined support rod (172), the other end of the inclined support rod (172) is provided with a support plate (173), and the support plate (173) is equidistantly arranged There is a buffer spring (174), and the other end of the buffer spring (174) is fixedly connected to the anti-skid plate (175), and the anti-skid plate (175) is in contact with the support arm (12). 3. The double-girder bridge crane according to claim 1, characterized in that, the connecting device (16) is one of a hook and a pneumatic gripper. 4. A double-girder bridge crane according to claim 1, characterized in that a rope limiter is arranged above the fixed pulley (13). 5. A double-girder bridge crane according to claim 1, characterized in that, the support disc (10), support arm (12) and diagonal support (17) are all made of high-strength alloy steel.