A safe and explosion-proof gantry crane

Abstract

The utility model discloses a safe and explosion -proof portal crane, including two end beams, be provided with two main girders between two end beams, and the bottom of end beam is provided with the support leg, and the support leg bottom is provided with the cart walking mechanism, is provided with the hoist trolley on the main girder, and the below of hoist trolley is provided with the mounting bracket, and the below of mounting bracket is provided with the spreader, be provided with the first hoisting mechanism on hoist trolley, and the top of mounting bracket is provided with the first movable pulley group, and the top of mounting bracket is provided with the first guide column, and be provided with the first sleeve on hoist trolley, be provided with the second hoisting mechanism on mounting bracket, and the top of spreader is provided with the second movable pulley group, and the first hoisting mechanism is connected through the wire rope between the first movable pulley group, and the top of spreader is provided with the second guide column, and be provided with the second sleeve on mounting bracket, the utility model discloses the spreader stability is high, can avoid the goods to appear larger swing in the process of hoisting, thereby improves the safety of production.

Description

Technical Field

[0001] This utility model relates to the field of lifting machinery technology, and in particular to a safe and explosion-proof gantry crane. Background Technology

[0002] Gantry cranes are mainly used for loading and unloading operations in outdoor freight yards, storage yards, and bulk cargo areas. Due to their high site utilization, wide operating range, broad adaptability, and strong versatility, they are widely used in port freight yards, shipyards, power plant construction sites, and other similar locations. To ensure that lifting and handling operations in flammable, explosive, or hazardous gas environments will not cause explosions or fires, explosion-proof gantry cranes are required for lifting and moving related materials. However, during the lifting process, the stability of the materials cannot be guaranteed; significant swaying poses a high safety risk. Utility Model Content

[0003] The purpose of this invention is to provide a safe and explosion-proof gantry crane. This crane has high lifting stability, which can prevent large swaying of items during lifting, thereby improving production safety.

[0004] To achieve the above objectives, this utility model adopts the following technical solution: a safe and explosion-proof gantry crane, comprising two end beams, two main beams arranged between the two end beams, legs arranged at the bottom of the end beams, a trolley traveling mechanism arranged at the bottom of the legs, a lifting trolley arranged on the main beams, an installation frame arranged below the lifting trolley, and a lifting device arranged below the installation frame; a first lifting mechanism is arranged on the lifting trolley, a first movable pulley group matching the first lifting mechanism is arranged on the top of the installation frame, the first lifting mechanism and the first movable pulley group are connected by a wire rope, a first guide column is arranged on the top of the installation frame, a first sleeve is arranged on the lifting trolley, and the first guide column is slidably connected in the first sleeve; a second lifting mechanism is arranged on the installation frame, a second movable pulley group matching the second lifting mechanism is arranged on the top of the lifting device, the first lifting mechanism and the first movable pulley group are connected by a wire rope, a second guide column is arranged on the top of the lifting device, a second sleeve is arranged on the installation frame, and the second guide column is slidably connected in the second sleeve.

[0005] Optionally, the mounting frame has a double-layer structure, with the first movable pulley group installed on the upper layer and the second lifting mechanism and second sleeve installed on the lower layer. The upper layer has a through hole that matches the second guide column.

[0006] Optionally, two movable pulleys are provided for both the first and second movable pulley groups and are arranged symmetrically. Two guide posts are provided for both the first and second guide posts, with the first guide posts located between the first movable pulley groups and the second guide posts located between the second movable pulley groups.

[0007] Optionally, rail clamps are installed at the ends of the trolley and the traveling mechanism.

[0008] The explosion-proof gantry crane of this invention has the following advantages: (1) The mounting frame is set between the lifting device and the crane trolley, which serves as an intermediate transition to avoid the overall length of the guide column being too long, thus increasing the difficulty of crane operation. The mounting frame ensures stability through the first guide column, and the lifting device ensures stability through the second guide column. Moreover, the first and second lifting mechanisms can operate independently, and the lifting device has high operational flexibility.

[0009] (2) The double-layer structure of the mounting frame can provide more space to facilitate the installation of the second guide column and the second lifting mechanism.

[0010] (3) Rail clamps can improve the stability of cranes when they are running outdoors and reduce the impact of environmental factors on crane displacement. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0012] The present invention will be further described below with reference to the accompanying drawings.

[0013] like Figure 1 As shown, a safe and explosion-proof gantry crane includes two end beams 1, two main beams 2 are arranged between the two end beams 1, support legs 3 are arranged at the bottom of the end beams 1, a trolley traveling mechanism 16 is arranged at the bottom of the support legs 3, a lifting trolley 4 is arranged on the main beams 2, a mounting frame 5 is arranged below the lifting trolley 4, a lifting device 6 is arranged below the mounting frame 5, and rail clamps 17 are installed at the ends of the lifting trolley 4 and the trolley traveling mechanism 16. The rail clamps 17 can improve the stability of the crane when operating outdoors and reduce the impact of environmental factors on the displacement of the crane.

[0014] The mounting frame 5 has a double-layer structure. A first lifting mechanism 7 is installed on the lifting trolley 4. A first movable pulley group 8, matching the first lifting mechanism 7, is installed at the top of the upper layer of the mounting frame 5. The first lifting mechanism 7 and the first movable pulley group 8 are connected by a steel wire rope. A first guide post 9 is also installed at the top of the upper layer of the mounting frame 5. A first sleeve 10 is installed on the lifting trolley 4, and the first guide post 9 is slidably connected within the first sleeve 10. The first lifting mechanism 7 can drive the mounting frame 5 to rise and fall, and the cooperation between the first guide post 9 and the first sleeve 10 ensures the stability of the mounting frame 5.

[0015] The lower layer of the mounting frame 5 is equipped with a second lifting mechanism 11, and the top of the lifting device 6 is equipped with a second movable pulley block 12 that matches the second lifting mechanism 11. The first lifting mechanism 7 and the first movable pulley block 8 are connected by a wire rope. The top of the lifting device 6 is equipped with a second guide post 13, and the lower layer of the mounting frame 5 is equipped with a second sleeve 14. The second guide post 13 is slidably connected inside the second sleeve 14. The upper layer of the mounting frame 5 has a through hole 15 that matches the second guide post 13. The second lifting mechanism 11 can drive the lifting device 6 to rise and fall, and the second guide post 13 and the second sleeve 14 cooperate to ensure the stability of the lifting device 6.

[0016] Two of each of the first movable pulley group 8 and the second movable pulley group 12 are provided and arranged symmetrically. Two of each of the first guide pillars 9 and the second guide pillars 13 are provided. The first guide pillars 9 are located between the first movable pulley groups 8, and the second guide pillars 13 are located between the second movable pulley groups 12. The horizontal line connecting the two first guide pillars 9 and the horizontal line connecting the two second guide pillars 13 are perpendicular to each other. The arrangement of the first guide pillars 9 and the second guide pillars 13 can balance the center of gravity of the lifting device 6 and improve the stability of the mounting frame 5 and the lifting device 6.

[0017] The mounting frame 5 is positioned between the lifting device 6 and the trolley 4, serving as an intermediate transition and dividing the lifting structure into two parts: the mounting frame 5 and the lifting device 6. This avoids the problem of excessively long guide columns, which would increase the difficulty of crane operation. The first lifting mechanism 7 and the second lifting mechanism 11 can operate independently. The mounting frame 5 and the lifting device 6 can be lifted individually or together. The lifting device 6 offers greater operational flexibility and can achieve higher lifting speeds. The mounting frame 5 ensures stability through the first guide column 9, and the lifting device 6 ensures stability through the second guide column 13. Therefore, the lifting device 6 will not experience significant swaying during the entire lifting process, ensuring stable movement of materials during handling and minimizing the risk of accidents.

[0018] The embodiments described above are merely some embodiments of this utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the protection scope of this utility model.

Claims

1. A safe and explosion-proof gantry crane, comprising two end beams, two main beams disposed between the two end beams, legs disposed at the bottom of the end beams, and a trolley traveling mechanism disposed at the bottom of the legs, characterized in that: A lifting trolley is mounted on the main beam, and an installation frame is mounted below the lifting trolley. A lifting device is mounted below the installation frame. A first lifting mechanism is mounted on the lifting trolley, and a first movable pulley block matching the first lifting mechanism is mounted on the top of the installation frame. The first lifting mechanism and the first movable pulley block are connected by a steel wire rope. A first guide column is mounted on the top of the installation frame, and a first sleeve is mounted on the lifting trolley. The first guide column is slidably connected within the first sleeve. A second lifting mechanism is mounted on the installation frame, and a second movable pulley block matching the second lifting mechanism is mounted on the top of the lifting device. The first lifting mechanism and the first movable pulley block are connected by a steel wire rope. A second guide column is mounted on the top of the lifting device, and a second sleeve is mounted on the installation frame. The second guide column is slidably connected within the second sleeve.

2. The explosion-proof gantry crane as described in claim 1, characterized in that: The mounting frame has a double-layer structure. The first movable pulley group is installed on the upper layer, and the second lifting mechanism and the second sleeve are installed on the lower layer. The upper layer has a through hole that matches the second guide column.

3. The explosion-proof gantry crane as described in claim 1, characterized in that: The first and second movable pulley groups are each provided with two pulleys, arranged symmetrically. The first and second guide posts are each provided with two guide posts, with the first guide post located between the first movable pulley groups and the second guide post located between the second movable pulley groups.

4. The explosion-proof gantry crane as described in claim 3, characterized in that: Rail clamps are installed at the ends of the crane trolley and the traveling mechanism.

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