A three-girder double-trolley hook bridge crane

Abstract

This utility model discloses a three-beam double-trolley hook bridge crane, relating to the technical field of hook bridge cranes. It includes two end beams of different lengths, with end beam connectors between them. A second main beam is located on the upper side of one end of the longer end beam, a third main beam is located on one side of the second main beam, and a first main beam is located on the side of the third main beam away from the second main beam. This utility model, through its three-beam double-trolley hook bridge crane, uses an off-center trolley structure for the auxiliary trolley, increasing the crane's lifting height. It can utilize existing space to lift the outer cover of a bell-type furnace, while the main trolley can handle the loading and unloading of steel coils into and out of the bell-type furnace for heat treatment. The two trolleys operate independently without interfering with each other, efficiently completing the heat treatment process in the steel plant.

Description

Technical Field

[0001] This utility model relates to the technical field of hook bridge cranes, specifically a three-beam double-trolley hook bridge crane. Background Technology

[0002] With the rapid development of industry, more and more users are demanding the use of advanced technology, simple operation and stable performance of lifting equipment. Traditional double trolley cranes are two trolleys installed on a double main beam bridge. These two trolleys can be used individually or in combination. However, due to factory space limitations and project budgets, indoor bridge cranes cannot be designed with very tall factory buildings, otherwise the construction cost would be too high.

[0003] Specialized cranes, especially those used in specific applications, demonstrate greater practicality and efficiency. A bell-type furnace is a specialized metallurgical furnace used in steel mills to heat-treat steel coils. It mainly consists of an outer bell, an inner bell, convection plates, and a furnace platform. A bell-type furnace typically holds 2-4 steel coils. The crane's role is to lift the outer bell to another furnace platform, and then hoist the steel coils into the bell-type furnace for heat treatment. Typically, one trolley on the crane is used to lift the outer bell, while another trolley is responsible for loading and unloading the steel coils.

[0004] The existing dual-trolley crane is inefficient and cannot meet the current high-efficiency production needs. Therefore, a high-efficiency and relatively low-cost crane is required to complete this task. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the existing defects and provide a three-beam double-trolley hook bridge crane. By setting up a three-beam double-trolley hook bridge crane, the auxiliary trolley adopts an off-center trolley structure, which increases the lifting height of the crane. It can complete the hoisting of the outer cover of the bell-shaped furnace using the existing space. The main trolley can realize the feeding and unloading of steel coils into and out of the bell-shaped furnace to complete the heat treatment of the steel coils. The two trolleys work independently and do not interfere with each other, efficiently completing the heat treatment process of the steel plant, which can effectively solve the problems in the background technology.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a three-beam double-trolley hook bridge crane, comprising two lengths of end beams, with end beam connectors provided between the two lengths of end beams, a second main beam provided on the upper side of one end of the longer end beam, a third main beam provided on one side of the second main beam, a first main beam provided on the side of the third main beam away from the second main beam, a main trolley provided on the upper side of the third main beam and the second main beam, and an auxiliary trolley provided on the upper side of the first main beam.

[0007] Furthermore, a first electric rotating hook is provided on the underside of the auxiliary trolley, and a second electric rotating hook is provided on the underside of the main trolley.

[0008] Furthermore, a trolley cable is provided between the main trolley and the auxiliary trolley, and a trolley running mechanism is provided on the upper side of both ends of the second main beam.

[0009] Furthermore, one end of the trolley cable is connected to an electrical control system, and a mobile driver's cab is provided on the underside of the second main beam.

[0010] Furthermore, support wheels are installed on the end beam, and the second main beam and the third main beam are connected to the end beam by bolts.

[0011] Furthermore, the No. 1 main beam is connected to the end beam by bolts.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model uses a three-beam double-trolley hook bridge crane with an off-center trolley structure, which increases the lifting height of the crane. It can complete the hoisting of the outer cover of the bell-shaped furnace using existing space. The main trolley can realize the feeding and unloading of steel coils into and out of the bell-shaped furnace to complete the heat treatment of the steel coils. The two trolleys work independently and do not interfere with each other, efficiently completing the heat treatment process of the steel plant. Attached Figure Description

[0013] Figure 1 This is a top view of the structure of this utility model; Figure 2 This is a schematic diagram of the main structure of this utility model; Figure 3 This is a schematic diagram of the left-side structure of this utility model.

[0014] In the diagram: 1. Electrical control system; 2. Trolley traveling mechanism; 3. Mobile driver's cab; 4. Main beam No. 1; 5. Trolley cable; 6. End beam connector; 7. End beam; 8. Main beam No. 2; 9. Auxiliary trolley; 10. Main trolley; 11. Electric rotating hook No. 1; 12. Electric rotating hook No. 2; 13. Main beam No. 3. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-3This embodiment provides a technical solution: a three-beam double-trolley hook bridge crane, including two lengths of end beams 7, with end beam connectors 6 between the two lengths of end beams 7, a second main beam 8 is provided on the upper side of one end of the longer end beam 7, a third main beam 13 is provided on one side of the second main beam 8, a first main beam 4 is provided on the side of the third main beam 13 away from the second main beam 8, a main trolley 10 is provided on the upper side of the third main beam 13 and the second main beam 8, and an auxiliary trolley 9 is provided on the upper side of the first main beam 4.

[0017] like Figure 1-3 As shown, the No. 1 main beam 4, the No. 2 main beam 8, and the No. 3 main beam 4 are installed on the end beam 7 with three wheels via end beam connectors. The auxiliary trolley 9 runs along the trolley track on the bridge frame formed by the No. 1 main beam 4, and the main trolley 10 runs along the trolley track on the bridge frame formed by the No. 2 main beam 8 and the No. 3 main beam 4. The main trolley 10 and the auxiliary trolley 9 are powered by the trolley cable 5. The auxiliary trolley 9 is responsible for hoisting the outer cover of the bell-shaped furnace. The hoisting and rotation of the outer cover of the bell-shaped furnace is achieved by the No. 1 electric rotating hook 11. The main trolley 10 is responsible for the entry and exit of the steel coil and the completion of the heat treatment of the steel coil. In order to facilitate the observation of the hoisting situation, the mobile driver's cab 3 can adjust the observation position in real time according to the actual position to better realize the hoisting.

[0018] The auxiliary trolley 9 is equipped with a first electric rotating hook 11 on its lower side, and the main trolley 10 is equipped with a second electric rotating hook 12 on its lower side.

[0019] A trolley cable 5 is installed between the main trolley 10 and the auxiliary trolley 9, and a trolley running mechanism 2 is installed on the upper side of both ends of the second main beam 8.

[0020] One end of the trolley cable 5 is connected to the electrical control system 1, and a mobile driver's cab 3 is set on the underside of the second main beam 8.

[0021] Support wheels are installed on end beam 7, and main beams 8 and 13 are connected to end beam 7 by bolts.

[0022] The No. 1 main beam 4 and the end beam 7 are connected by bolts.

[0023] The working principle of a three-beam double-trolley hook bridge crane provided by this utility model is as follows: Figures 1-3As shown, the No. 1 main beam 4, the No. 2 main beam 8, and the No. 3 main beam 4 are installed on the end beam 7 with three wheels via end beam connectors. The auxiliary trolley 9 runs along the trolley track on the bridge frame formed by the No. 1 main beam 4, and the main trolley 10 runs along the trolley track on the bridge frame formed by the No. 2 main beam 8 and the No. 3 main beam 4. The main trolley 10 and the auxiliary trolley 9 are powered by the trolley cable 5. The auxiliary trolley 9 is responsible for hoisting the outer cover of the bell-shaped furnace. The hoisting and rotation of the outer cover of the bell-shaped furnace is achieved by the No. 1 electric rotating hook 11. The main trolley 10 is responsible for the entry and exit of the steel coil and the completion of the heat treatment of the steel coil. In order to facilitate the observation of the hoisting situation, the mobile driver's cab 3 can adjust the observation position in real time according to the actual position to better realize the hoisting.

[0024] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A three-beam double-trolley hook bridge crane, comprising two lengths of end beams (7), characterized in that: An end beam connector (6) is provided between the two lengths of the end beams (7). A second main beam (8) is provided on the upper side of one end of the longer end beam (7). A third main beam (13) is provided on one side of the second main beam (8). A first main beam (4) is provided on the side of the third main beam (13) away from the second main beam (8). A main trolley (10) is provided on the upper side of the third main beam (13) and the second main beam (8). A secondary trolley (9) is provided on the upper side of the first main beam (4).

2. The three-beam double-trolley hook bridge crane according to claim 1, characterized in that: The auxiliary trolley (9) is provided with a first electric rotating hook (11) on its lower side, and the main trolley (10) is provided with a second electric rotating hook (12) on its lower side.

3. A three-beam double-trolley hook bridge crane according to claim 1, characterized in that: A trolley cable (5) is provided between the main trolley (10) and the auxiliary trolley (9), and a trolley running mechanism (2) is provided on the upper side of both ends of the second main beam (8).

4. A three-beam double-trolley hook bridge crane according to claim 3, characterized in that: One end of the trolley cable (5) is connected to an electrical control system (1), and a mobile driver's cab (3) is provided on the lower side of the second main beam (8).

5. A three-beam double-trolley hook bridge crane according to claim 1, characterized in that: The end beam (7) is equipped with a support wheel, and the second main beam (8) and the third main beam (13) are connected to the end beam (7) by bolts.

6. A three-beam double-trolley hook bridge crane according to claim 2, characterized in that: The No. 1 main beam (4) and the end beam (7) are connected by bolts.

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