A portal crane for constructing a superconducting high-speed maglev track

Abstract

This utility model discloses a portal crane frame for constructing superconducting high-speed maglev tracks, comprising two parallel steel crossbeams, a top steel longitudinal beam, and a bottom steel longitudinal beam. The top and bottom steel longitudinal beams each include a detachable fixed steel longitudinal beam and an extended steel longitudinal beam. A top steel longitudinal beam is positioned between the two ends of the two parallel steel crossbeams, and a bottom steel longitudinal beam is parallel to the bottom of the top steel longitudinal beam. Moving mechanisms are located at both ends of the bottom steel longitudinal beam, and several detachable traveling mechanisms are located in the middle of the bottom steel longitudinal beam. Several lifting units are arranged between the top and bottom steel longitudinal beams. This utility model allows for the alteration of the longitudinal length of the portal crane frame by adding or removing the corresponding top and bottom extended steel longitudinal beams, enabling it to accommodate the lifting of various prefabricated components of different lengths and types, thus demonstrating good practicality.

Description

Technical Field

[0001] This utility model belongs to the technical field of portal cranes, specifically relating to a portal crane for the construction of superconducting high-speed maglev tracks. Background Technology

[0002] Gantry cranes are a type of bridge crane, primarily used in outdoor freight yards, ports, and bulk cargo loading and unloading operations. Their metal structure is a portal frame, with two legs mounted under the main beam allowing direct movement on ground tracks. Cantilever beams can extend from both ends of the main beam to expand the working range. Currently, existing gantry cranes on the market typically use triangular supports for their side columns and are constructed using single crossbeams. This limits the range of lengths of objects they can lift. For continuously lifting objects of varying lengths, different gantry cranes are required, increasing equipment purchase and maintenance costs. For example, Chinese patent CN218507389U discloses a gantry crane for hydropower stations. This gantry crane includes a support unit, a gantry beam unit, and a mounting unit. The support unit includes a support assembly and a movable assembly located at the bottom of the support assembly. The gantry beam unit is located at the top of the support assembly and includes a gantry beam and support rods symmetrically arranged at both ends of the gantry beam. The mounting unit is located on the gantry beam and includes a mounting assembly and a hook assembly located at the lower end of the mounting assembly. The support unit and the gantry beam unit together constitute the main frame of this gantry crane, and the mounting unit is installed on the gantry beam and can move linearly on the gantry beam. However, when constructing superconducting high-speed maglev tracks, this solution is difficult to apply to the operational requirements of the track's tonnage and is also difficult to apply to the lifting of a large number of prefabricated components of various sizes.

[0003] In summary, since superconducting high-speed maglev tracks are composed of various prefabricated components of different lengths and types, in order to promote the efficient and low-cost construction of superconducting high-speed maglev tracks, a gantry crane that can accommodate prefabricated components of different lengths and types is needed for the efficient lifting and installation of different types of prefabricated components in superconducting high-speed maglev tracks. Utility Model Content

[0004] The purpose of this invention is to provide a gantry crane for the construction of superconducting high-speed maglev tracks, which is designed to accommodate the hoisting of prefabricated components of different sizes.

[0005] This utility model is mainly achieved through the following technical solutions: A portal crane for constructing a superconducting high-speed maglev track includes two parallel steel crossbeams, a top steel longitudinal beam, and a bottom steel longitudinal beam. The top and bottom steel longitudinal beams each include a detachable fixed steel longitudinal beam and an extended steel longitudinal beam. A top steel longitudinal beam is positioned between the two ends of the two parallel steel crossbeams, and a bottom steel longitudinal beam is parallel to the bottom of the top steel longitudinal beam. Moving mechanisms are located at both ends of the bottom steel longitudinal beam, and several detachable traveling mechanisms are located in the middle of the bottom steel longitudinal beam. Several lifting units are arranged between the top and bottom steel longitudinal beams. The lifting unit includes steel columns, I-beams, and hoisting mechanisms. Several steel columns are arranged along the length direction between the top and bottom steel longitudinal beams on one or both sides, and cross-shaped diagonal braces are arranged between adjacent steel columns. Several I-beams are arranged along the length direction between adjacent top steel longitudinal beams, and several hoisting mechanisms are slidably arranged on the I-beams.

[0006] To better realize this utility model, furthermore, a number of lifting units are provided between the fixed steel longitudinal beams of the top steel longitudinal beam and the bottom steel longitudinal beam, and at least one lifting unit is provided between the extended steel longitudinal beams; the outer ends of the fixed steel longitudinal beam and the extended steel longitudinal beam of the bottom steel longitudinal beam are respectively provided with moving mechanisms; and the inner end of the fixed steel longitudinal beam of the bottom steel longitudinal beam is provided with a number of detachable walking mechanisms.

[0007] To better realize this utility model, steel columns are further provided at the outer ends of the extended steel longitudinal beams between the top steel longitudinal beam and the bottom steel longitudinal beam, and at the inner ends of the fixed steel longitudinal beams between the top steel longitudinal beam and the bottom steel longitudinal beam. A cross-shaped diagonal brace is provided between the two steel columns, and an I-beam is provided between the extended steel longitudinal beams of the adjacent top steel longitudinal beams between the two steel columns.

[0008] To better realize this utility model, a traveling mechanism is further provided on the side of the fixed steel longitudinal beam of the bottom steel longitudinal beam near the extended steel longitudinal beam.

[0009] To better realize this utility model, the walking mechanism further includes a detachable wheel set and a detachable connecting part, the detachable wheel set being connected to the bottom steel longitudinal beam through the detachable connecting part; the moving mechanism includes a drive motor and a rubber wheel, the drive motor being used to drive the rubber wheel to rotate.

[0010] To better realize this utility model, rubber anti-collision pads are further provided on both sides of the bottom steel longitudinal beam; a cable reel is provided on the fixed steel longitudinal beam of one side of the bottom steel longitudinal beam.

[0011] The beneficial effects of this utility model are as follows: Compared to existing gantry cranes, this invention can quickly change the longitudinal length of the gantry crane by rapidly adding or removing corresponding top and bottom extended steel longitudinal beams, thus efficiently and quickly accommodating the lifting of various prefabricated components of different lengths and types. Secondly, this invention can quickly connect and fix the steel longitudinal beams and extended steel longitudinal beams via a moving mechanism, and change the forward and backward movement direction of the bottom steel longitudinal beam, thereby realizing the forward or backward movement of the gantry crane. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the portal crane used for constructing the superconducting high-speed maglev track according to this utility model; Figure 2 for Figure 1 The right-side view.

[0013] The components include: 1. Steel crossbeam, 2. Top steel longitudinal beam, 21. Top fixed steel longitudinal beam, 22. Top extended steel longitudinal beam, 3. Bottom steel longitudinal beam, 31. Bottom fixed steel longitudinal beam, 32. Bottom extended steel longitudinal beam, 4. Steel column, 5. Cross-shaped diagonal brace, 6. I-beam, 7. Electric hoist, 8. First drive motor, 9. Second drive motor, 10. Cable reel, 11. Rubber wheel, 12. Reducer, 13. Rubber anti-collision pad, 14. Detachable wheel set, 15. Detachable connecting parts, 16. Connecting bolt set, 17. Steel pad. Detailed Implementation

[0014] Example 1: A portal crane frame for constructing a superconducting high-speed maglev track includes a fixed crane frame and an extended crane frame connected by a group of connecting bolts 16. The outer ends of the fixed crane frame and the extended crane frame are respectively equipped with moving mechanisms, and the end of the fixed crane frame near the extended crane frame is equipped with a traveling mechanism. Specifically, the fixed crane frame includes a steel crossbeam 1, with parallel top fixed steel longitudinal beams 21 at both ends of the steel crossbeam 1, and parallel bottom fixed steel longitudinal beams 31 at the bottom of the top fixed steel longitudinal beams 21; several steel columns 4 are arranged along the length direction between the top fixed steel longitudinal beams 21 and the bottom fixed steel longitudinal beams 31 on the same side; several I-beams 6 are arranged between adjacent top fixed steel longitudinal beams 21. The extended crane frame includes a steel crossbeam 1, with parallel top extended steel longitudinal beams 22 at both ends of the steel crossbeam 1, and parallel bottom fixed steel longitudinal beams 31 at the bottom of the top extended steel longitudinal beams 22. Several steel columns 4 are arranged along the length direction between the top extended steel longitudinal beam 22 and the bottom fixed steel longitudinal beam 31 on the same side. Several I-beams 6 are arranged between adjacent top extended steel longitudinal beams 22. Two steel crossbeams 1 are arranged in parallel, and the top fixed steel longitudinal beam 21 and the top extended steel longitudinal beam 22, as well as the bottom fixed steel longitudinal beam 31 and the bottom fixed steel longitudinal beam 31, are respectively connected by connecting bolt groups 16.

[0015] Preferably, a cross-shaped diagonal brace 5 is provided between adjacent steel columns 4. Several hoisting mechanisms are slidably mounted on the I-beam 6. The hoisting mechanism can be an electric hoist 7. The traveling mechanism includes a detachable wheel set 14 and a detachable connecting part, the detachable wheel set 14 being connected to the bottom steel longitudinal beam 3 through the detachable connecting part; the moving mechanism includes a drive motor and rubber wheels 11, the drive motor being used to drive the rubber wheels 11 to rotate.

[0016] This utility model is generally used based on a fixed lifting frame, which can meet the tonnage requirements of track laying. When it is necessary to lift special prefabricated components, an extension lifting frame of the corresponding size can be quickly disassembled and connected to the fixed lifting frame to accommodate the lifting of prefabricated components of different sizes. During the docking process between the fixed lifting frame and the extension lifting frame, a driving travel mechanism can be used to achieve rapid docking. Specifically, a travel mechanism can be set at the end of the extension lifting frame near the fixed lifting frame. After the fixed lifting frame and the extension lifting frame are connected, the travel mechanism can be removed. During use, the gantry crane can also be quickly moved to the working position by driving the travel mechanism.

[0017] Example 2: A type of gantry crane for constructing superconducting high-speed maglev tracks, such as Figure 1 and Figure 2 As shown, the gantry crane includes a steel crossbeam 1, a top steel longitudinal beam 2, and a bottom steel longitudinal beam 3. The top two sides of the gantry crane are provided with parallel steel crossbeams 1. Top steel longitudinal beams 2 are respectively provided between the upper and lower ends of adjacent steel crossbeams 1. Bottom steel longitudinal beams 3 are provided parallel to the bottom of the top steel longitudinal beams 2. The top steel longitudinal beam 2 includes a top fixed steel longitudinal beam 21 and a top extended steel longitudinal beam 22 arranged sequentially from left to right, and the top fixed steel longitudinal beam 21 and the top extended steel longitudinal beam 22 are connected by a group of connecting bolts 16. The bottom steel longitudinal beam 3 includes a bottom fixed steel longitudinal beam 31 and a bottom extended steel longitudinal beam 32 arranged sequentially from left to right, and the bottom fixed steel longitudinal beam 31 and the bottom extended steel longitudinal beam 32 are connected by a group of connecting bolts 16. Preferably, rubber anti-collision pads 13 are respectively provided on the outer sides of the bottom fixed steel longitudinal beam 31 and the bottom extended steel longitudinal beam 32. The function of the rubber anti-collision pads 13 is to prevent damage from collisions with other objects.

[0018] Several steel columns 4 are installed between the top fixed steel longitudinal beam 21 and the bottom fixed steel longitudinal beam 31 on the same side. Steel columns 4 are also installed at the outer ends between the top extended steel longitudinal beam 22 and the bottom extended steel longitudinal beam 32 on the same side, and cross-shaped diagonal braces 5 are installed between adjacent steel columns 4. Specifically, the ends of the cross-shaped diagonal braces 5 are connected to the connecting bolt group 16 and the steel columns 4 respectively through steel plate pads. The function of the cross-shaped diagonal braces 5 is to increase the stability of the gantry crane. Several I-beams 6 are installed between adjacent top fixed steel longitudinal beams 21, and one I-beam 6 is installed between adjacent top extended steel longitudinal beams 22. Two electric hoists 7 are slidably installed on the I-beams 6, and the electric hoists 7 are used to lift prefabricated components. The I-beams 6 are connected to the steel longitudinal beams by welding, and the function of the I-beams 6 is to serve as the track for the lateral movement of the electric hoists 7.

[0019] The outer ends of the bottom fixed steel longitudinal beam 31 and the bottom extended steel longitudinal beam 32 are respectively provided with moving mechanisms, and the middle part of the bottom fixed steel longitudinal beam 31 is provided with several traveling mechanisms. Specifically, the two ends of the front bottom steel longitudinal beam 3 are respectively provided with first moving mechanisms, and the two ends of the rear bottom steel longitudinal beam 3 are respectively provided with second moving mechanisms. The first moving mechanism includes a first drive motor 8 and a rubber wheel 11, and the second moving mechanism includes a second drive motor 9 and a rubber wheel 11. The first drive motor 8 and the second drive motor 9 are respectively used to drive the connected rubber wheel 11 through the reducer 12. Preferably, a cable reel 10 is provided on the rear bottom fixed steel longitudinal beam 31. The function of the cable reel 10 is to prevent the cable from being scattered on the ground.

[0020] Preferably, a walking mechanism is provided on the side of the bottom fixed steel longitudinal beam 31 near the bottom extended steel longitudinal beam 32. The walking mechanism includes a detachable wheel set 14 and a detachable connecting part. The detachable wheel set 14 is connected to the bottom fixed steel longitudinal beam 31 through the detachable connecting part.

[0021] In use, the prefabricated component to be hoisted is lifted to a certain height by four electric hoists 7 on both sides. When the gantry crane needs to be moved, the first drive motor 8 and / or the second drive motor 9 are activated. The first drive motor 8 and the second drive motor 9 can be controlled simultaneously or separately. The first drive motor 8 and the second drive motor 9 control the corresponding reducers 12, which in turn control the corresponding rubber wheels 11. The gantry crane can be turned forward and backward by activating the first drive motor 8 or the second drive motor 9. After the prefabricated component is transported to the installation position, it is lowered. When the prefabricated component is long, a top extension steel longitudinal beam 22 and a bottom extension steel longitudinal beam 32 can be installed on the top fixed steel longitudinal beam 21 and the bottom fixed steel longitudinal beam 31 by connecting bolt groups 16. I-beams 6 are fixed between adjacent top extension steel longitudinal beams 22, and a traveling mechanism is provided at the end of the bottom fixed steel longitudinal beam 31 near the bottom extension steel longitudinal beam 32. Depending on the length of the precast components to be lifted, additional top extension steel longitudinal beams 22 and bottom extension steel longitudinal beams 32 can be added to form a suitable gantry crane. Four electric hoists 7, spaced at relatively reasonable intervals, can then be selected to lift the precast components. The above description is merely a preferred embodiment of this utility model and does not constitute any limitation on the utility model. Any simple modifications or equivalent changes 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 portal crane for constructing a superconducting high-speed maglev track, characterized in that It includes two parallel steel crossbeams (1), a top steel longitudinal beam (2), and a bottom steel longitudinal beam (3). The top steel longitudinal beam (2) and the bottom steel longitudinal beam (3) respectively include a detachable fixed steel longitudinal beam and an extended steel longitudinal beam. The top steel longitudinal beam (2) is provided between the two ends of the two parallel steel crossbeams (1), and the bottom steel longitudinal beam (3) is provided parallel to the bottom of the top steel longitudinal beam (2). The two ends of the bottom steel longitudinal beam (3) are provided with moving mechanisms, and the middle of the bottom steel longitudinal beam (3) is provided with several detachable walking mechanisms. Several lifting units are provided between the top steel longitudinal beam (2) and the bottom steel longitudinal beam (3). The lifting unit includes steel columns (4), I-beams (6) and lifting mechanisms. Several steel columns (4) are arranged along the length direction between the top steel longitudinal beams (2) and the bottom steel longitudinal beams (3) on one or both sides. Cross-shaped diagonal braces (5) are arranged between adjacent steel columns (4). Several I-beams (6) are arranged along the length direction between adjacent top steel longitudinal beams (2). Several lifting mechanisms are slidably arranged on the I-beams (6).

2. The portal crane for constructing a superconducting high-speed maglev track according to claim 1, characterized in that, Several lifting units are provided between the fixed steel longitudinal beams of the top steel longitudinal beam (2) and the bottom steel longitudinal beam (3), and at least one lifting unit is provided between the extended steel longitudinal beams; the outer ends of the fixed steel longitudinal beam and the extended steel longitudinal beam of the bottom steel longitudinal beam (3) are respectively provided with moving mechanisms; the inner end of the fixed steel longitudinal beam of the bottom steel longitudinal beam (3) is provided with several detachable walking mechanisms.

3. The portal crane for constructing a superconducting high-speed maglev track according to claim 2, characterized in that, Steel columns (4) are provided at the outer ends of the extended steel longitudinal beams between the top steel longitudinal beam (2) and the bottom steel longitudinal beam (3) and at the inner ends of the fixed steel longitudinal beams between the top steel longitudinal beam (2) and the bottom steel longitudinal beam (3), respectively. Cross-shaped diagonal braces (5) are provided between the two steel columns (4), and I-beams (6) are provided between the extended steel longitudinal beams of adjacent top steel longitudinal beams (2) between the two steel columns (4).

4. The portal crane for constructing a superconducting maglev track according to claim 2, wherein The fixed steel longitudinal beam of the bottom steel longitudinal beam (3) is provided with a walking mechanism on the side of the extended steel longitudinal beam.

5. The portal crane according to any one of claims 1 to 4, characterized in that The walking mechanism includes a detachable wheel set (14) and a detachable connecting part. The detachable wheel set (14) is connected to the bottom steel longitudinal beam (3) through the detachable connecting part. The moving mechanism includes a drive motor and a rubber wheel (11). The drive motor is used to drive the rubber wheel (11) to rotate.

6. The portal crane for constructing a superconducting high-speed maglev track according to claim 1, characterized in that, Rubber anti-collision pads (13) are provided on both sides of the bottom steel longitudinal beam (3); a cable reel (10) is provided on the fixed steel longitudinal beam of the bottom steel longitudinal beam (3) on one side.

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