Double-girder lifting hook portal crane

Abstract

A double-girder lifting hook portal crane effectively solves the problem that goods are prone to swing in the lifting process and comprises double girders, an electric trolley is arranged on the double girders in a left-right running mode, a winding drum is installed on the electric trolley, a steel wire rope is wound on the winding drum, a base is arranged below the electric trolley, and a pulley is rotationally connected to the upper end of the base. A track arranged in the horizontal direction is arranged above the pulley, a sliding block runs in the track in the left-right direction, a through hole corresponding to the steel wire rope is formed in the sliding block, the steel wire rope vertically penetrates through the through hole, and supporting blocks are fixed to the left end and the right end of the track. Guide rods in the vertical direction are fixed to the supporting legs, the supporting blocks slide in the vertical direction along the guide rods, buffer plates are arranged at the left end and the right end of the track and slide in the track in the left-right direction, and springs are installed between the buffer plates and the supporting blocks.

Description

Technical Field

[0001] This utility model belongs to the field of crane technology, and in particular relates to a double main beam hook gantry crane. Background Technology

[0002] Double-girder gantry cranes are industrial equipment with a stable structure, suitable for loading and unloading in open-air warehouses, material yards, railway freight stations, and port terminals. During lifting operations, double-girder gantry cranes experience several issues. First, the lifting ropes may deviate from the direction of gravity during lifting, or the hook may generate tension during transport, causing the hook and load to swing. Second, once the load is lifted, the swinging motion can cause impact and fatigue damage to the ropes and pulleys, potentially leading to rope breakage and pulley damage, thus causing safety accidents. Utility Model Content

[0003] In view of the above situation and to overcome the defects of the existing technology, the purpose of this utility model is to provide a double main beam hook gantry crane, which effectively solves the problem of easy swaying during the lifting of goods.

[0004] The technical solution to the technical problem is as follows: It includes a double main beam, with an electric trolley moving left and right on the double main beam. A drum is installed on the electric trolley, and a steel wire rope is wound on the drum. A base is located below the electric trolley, with a pulley rotatably connected to the upper end of the base. The lower end of the steel wire rope is wound around the pulley, and a hook is installed at the lower end of the base. Support legs are installed at both ends of the double main beam. A horizontally oriented track is located above the pulley, and a slider moves left and right within the track. The slider has through holes corresponding to the steel wire rope, through which the steel wire rope passes vertically. Support blocks are fixed at both ends of the track, and vertical guide rods are fixed on the support legs. The support blocks slide up and down along the guide rods. Buffer plates are located at both ends of the track, sliding left and right within the track. Springs are installed between the buffer plates and the support blocks.

[0005] Preferably, positioning plates are installed on the base on the left and right sides of the pulley, the height of the positioning plates is greater than the height of the pulley, and the positioning plates correspond vertically to the slider.

[0006] Preferably, a trolley running mechanism is installed at the lower end of the outrigger.

[0007] Preferably, the slider is equipped with multiple traveling wheels at both ends, and the traveling wheels roll within the track.

[0008] Preferably, a first limiting platform located at the upper end of the guide rod is fixed on the support leg, and a second limiting platform located at the lower end of the guide rod is fixed on the support leg.

[0009] This invention has the following advantages over traditional equipment: it is simple to operate; the slider, track and hook move synchronously with the rise or fall of the wire rope; the first and second limiting platforms determine the range of motion of the track and slider, which does not affect the flexibility of the hook in installing goods, and can limit the wire rope, reduce the swing amplitude during the lifting process, improve the safety of the crane, extend the service life of the equipment, and is low in cost and economical. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the front view of this utility model;

[0011] Figure 2 This is a schematic diagram of the top view of this utility model;

[0012] Figure 3 This is a schematic diagram of the left view of this utility model;

[0013] Figure 4 This is a schematic diagram of the three-dimensional structure of the track and guide rod in this utility model;

[0014] Figure 5 yes Figure 4 A magnified schematic diagram of part A in the diagram;

[0015] Figure 6 This is a schematic diagram of the three-dimensional structure of the slider in this utility model.

[0016] Reference numerals in the attached drawings: 1. Double main beam; 2. Electric trolley; 3. Steel wire rope; 4. Base; 5. Pulley; 6. Hook; 7. Outrigger; 8. Track; 9. Slider; 10. Through hole; 11. Support block; 12. Guide rod; 13. Buffer plate; 14. Spring; 15. Traveling wheel; 16. First limiting platform; 17. Second limiting platform. Detailed Implementation

[0017] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0018] Depend on Figures 1 to 6A double-girder hook gantry crane is provided, comprising a double main girder 1, an electric trolley 2 that moves left and right on the double main girder 1, a drum installed on the electric trolley 2, a wire rope 3 wound on the drum, a base 4 below the electric trolley 2, a pulley 5 rotatably connected to the upper end of the base 4, the lower end of the wire rope 3 wound on the pulley 5, a hook 6 installed at the lower end of the base 4, legs 7 installed at both ends of the double main girder 1, a horizontally arranged track 8 above the pulley 5, a slider 9 that moves left and right within the track 8, a through hole 10 corresponding to the wire rope 3 on the slider 9, the wire rope 3 passing through the through hole 10 vertically, support blocks 11 fixed at both ends of the track 8, a vertically oriented guide rod 12 fixed on the support leg 7, the support block 11 sliding along the guide rod 12 vertically, buffer plates 13 provided at both ends of the track 8, the buffer plates 13 sliding left and right within the track 8, and a spring 14 installed between the buffer plate 13 and the support block 11.

[0019] In order to avoid interference between the track 8 and the pulley 5 and to ensure the normal operation of the pulley 5, positioning plates 18 are installed on the base 4 on the left and right sides of the pulley 5. The height of the positioning plates 18 is greater than the height of the pulley 5, and the positioning plates 18 correspond vertically to the slider 9.

[0020] To facilitate the forward and backward movement of the double main beam 1, a trolley traveling mechanism is installed at the lower end of the outrigger 7.

[0021] To ensure the stability of the slider 9 running within the track 8, multiple traveling wheels 15 are installed at both ends of the slider 9, and the traveling wheels 15 roll within the track 8.

[0022] In order to control the range of vertical movement of the track 8, a first limiting platform 16 located at the upper end of the guide rod 12 is fixed on the support leg 7, and a second limiting platform 17 located at the lower end of the guide rod 12 is fixed on the support leg 7.

[0023] In use, the track 8 and slider 9 move downward under the action of gravity, and the support block 11 moves downward along the guide rod 12 to ensure the stability of the downward movement of the track 8 and slider 9. When the positioning plate 18 supports the bottom of the slider 9, the track 8, slider 9, positioning plate 18, base 4 and hook 6 move downward as a whole. When the support block 11 moves downward to the second limiting platform 17, the track 8 moves to the lowest point, and the support block 11, track 8 and slider 9 stop moving, while the base 4 and hook 6 can continue to move downward to ensure the flexibility of the hook 6, which is beneficial for the hook 6 to install goods.

[0024] After the goods are installed, the drum controls the wire rope 3 to move upwards. The wire rope 3 drives the pulley 5, positioning plate 18, base 4, hook 6, and the goods to move upwards as a whole. After the positioning plate 18 moves upwards a certain distance, it drives the slider 9, track 8, and support block 11 to move upwards as a whole. When the goods move upwards to a suitable height, the drum is closed, and the electric trolley 2 is started. The electric trolley 2 moves left and right within the double main beam 1 to adjust the left and right position of the goods. The wire rope 3 passes through the through hole 10 of the slider 9, and then the wire rope 3 drives the slider 9, positioning plate 18, base 4, and the goods to move left and right as a whole. The slider 9 drives the traveling wheel 15 to move left and right within the track 8, ensuring the stability of the left and right movement of the wire rope 3 and preventing the goods from moving forward. The rearward swing improves stability. When the slider 9 moves to the end of the support block 11, the slider 9 squeezes the buffer plate 13, and the buffer plate 13 squeezes the spring 14, which has a good buffering effect, effectively reducing the inertia of the cargo and preventing the cargo from colliding with the support leg 7. It is safe and reliable. When the trolley running mechanism is started, the double main beam 1, support leg 7, guide rod 12, support block 11, track 8, slider 9, wire rope 3 and cargo move back and forth as a whole. The guide rod 12 limits the track 8 in the back and forth direction to ensure the stability of the track 8 and slider 9 in the back and forth direction. The slider 9 limits the wire rope 3 in the back and forth direction to effectively ensure the stability of the cargo in the back and forth direction and reduce the swaying amplitude of the cargo in the back and forth direction. It has good stability, ingenious structure, low cost and safety.

[0025] This embodiment does not impose any limitation on the shape, material, structure, etc. of this utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this utility model shall fall within the protection scope of this utility model.

Claims

1. A double-beam hook gantry crane, comprising a double main beam (1), an electric trolley (2) moving left and right on the double main beam (1), a drum installed on the electric trolley (2), a wire rope (3) wound on the drum, a base (4) provided below the electric trolley (2), a pulley (5) rotatably connected to the upper end of the base (4), the lower end of the wire rope (3) wound on the pulley (5), a hook (6) installed at the lower end of the base (4), and outriggers (7) installed at the left and right ends of the double main beam (1), characterized in that, A horizontal track (8) is provided above the pulley (5). A slider (9) moves in the left and right direction inside the track (8). A through hole (10) corresponding to the wire rope (3) is provided on the slider (9). The wire rope (3) passes through the through hole (10) from top to bottom. Support blocks (11) are fixed at both ends of the track (8). A vertical guide rod (12) is fixed on the support leg (7). The support block (11) slides up and down along the guide rod (12). Buffer plates (13) are provided at both ends of the track (8). The buffer plates (13) slide in the left and right direction inside the track (8). A spring (14) is installed between the buffer plate (13) and the support block (11).

2. A double-girder hook gantry crane according to claim 1, characterized in that, The lower end of the outrigger (7) is equipped with a trolley running mechanism.

3. A double-girder hook gantry crane according to claim 1, characterized in that, The slider (9) is equipped with multiple traveling wheels (15) at both ends, and the traveling wheels (15) roll within the track (8).

4. A double-girder hook gantry crane according to claim 1, characterized in that, The support leg (7) is fixed with a first limiting platform (16) located at the upper end of the guide rod (12), and the support leg (7) is fixed with a second limiting platform (17) located at the lower end of the guide rod (12).

5. A double-beam hook gantry crane according to claim 1, characterized in that, Positioning plates (18) are installed on the base (4) on the left and right sides of the pulley (5). The height of the positioning plates (18) is greater than the height of the pulley (5), and the positioning plates (18) correspond vertically to the slider (9).

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