Portal crane

Abstract

A portal crane comprises a hoisting main beam, walking wheel seats, supporting legs and a cross beam, the supporting legs are connected and supported between the hoisting main beam and the walking wheel seats, the walking wheel seats are used for moving on rails, bottom beams are installed at the bottoms of the two ends of the hoisting main beam respectively, and the supporting legs are arranged on the portions, located on the two sides of the hoisting main beam, of the bottom beams respectively. The lower ends of the supporting legs are hinged with the walking wheel seats; the portal crane has two states, in the first state, the upper ends of the supporting legs are hinged to the bottom beam, and in the second state, the upper ends of the supporting legs are fixedly connected with the bottom beam; the cross beam is used for being installed between the two supporting legs on each side in the second state. When the portal crane is installed, the hoisting main beam and the supporting leg of the portal crane can be installed and connected only by lifting the hoisting main beam, the field installation space is reduced, the supporting leg and the bottom beam are automatically aligned, the installation efficiency is improved, and meanwhile the safety risk during installation is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of gantry cranes, in particular to a gantry crane. Background Art

[0002] A gantry crane, also known as a gantry crane, is a type of lifting equipment that operates on ground tracks. Currently, the installation and disassembly of gantry cranes often involves hoisting components one by one using large cranes. After the metal structural components are installed, the functional equipment is then installed at high altitude. This method is inefficient, highly dangerous, and uneconomical.

[0003] During installation, existing gantry cranes must first hoist the main beam 100 into the air before docking the outriggers 300 on either side of the main beam 100. This requires two cranes to balance the main beam 100, and one or two more cranes to hoist the outriggers 300 for on-site docking. This not only requires a large on-site installation space, but also reduces installation efficiency and poses a high safety risk during docking. Utility Model Content

[0004] In order to solve the current technical problems, the main purpose of the present invention is to provide a gantry crane, which includes two states. In the first state, the support legs are first hinged and installed on the lifting main beam. In the second state, when the lifting main beam is lifted or hoisted, the support legs on both sides are naturally retracted as the lifting main beam is lifted. After the lifting main beam is lifted into place, the upper ends of the support legs and the lifting main beam automatically form a docking state, and then the support legs are connected and fixed to the bottom beam by welding or bolting. Only the lifting main beam needs to be lifted to complete the installation of the gantry crane's lifting main beam and the support legs, which reduces the on-site installation space, and the support legs and the bottom beam are automatically aligned, thereby improving the installation efficiency and reducing the safety risks during installation.

[0005] The technical solution adopted by the utility model is: a gantry crane, including a lifting main beam, a traveling wheel seat, supporting legs and a cross beam, the supporting legs are connected and supported between the lifting main beam and the traveling wheel seat, the traveling wheel seat is used to move on the track, the bottom of each end of the lifting main beam is respectively installed with a bottom beam, the bottom beam is located on both sides of the lifting main beam and is respectively provided with supporting legs, and the lower ends of the supporting legs are hinged to the traveling wheel seat;

[0006] The gantry crane includes two states. In the first state, the upper end of the support leg is hinged to the bottom beam, and in the second state, the upper end of the support leg is fixedly connected to the bottom beam.

[0007] The crossbeam is adapted to be mounted between the two legs on each side in the second state.

[0008] The two ends of the bottom beam are respectively provided with a first hinge seat, and the upper end of the support leg is provided with a second hinge seat on a side away from the lifting main beam. The first hinge seat and the second hinge seat are hinged by a pin shaft.

[0009] In the second state, the upper ends of the legs are welded and fixed to the bottom beam.

[0010] In the second state, the upper end of the support leg is fixedly connected to the bottom beam by bolts.

[0011] A first flange is fixedly connected to the lower side of the bottom beam at a position corresponding to the support leg, and a second flange is fixedly connected to the upper end of the support leg. In the second state, the first flange and the second flange are connected by bolts.

[0012] The lower end of the supporting leg is fixedly connected with a third hinge seat, the top of the walking wheel seat is fixedly connected with a fourth hinge seat, and the third hinge seat and the fourth hinge seat are hinged by a pin shaft.

[0013] In the first state, the crossbeam is used to support the legs.

[0014] In the second state, the crossbeam and the legs are fixed by welding or by bolt connection.

[0015] The utility model has the following beneficial effects:

[0016] 1. The gantry crane of the present invention includes two states. In the first state, the upper end of the support leg is first hinged and installed on the lifting main beam, and the walking wheel seat is also hinged to the lower end of the support leg; in the second state, when the lifting main beam is lifted or hoisted by an elevator or a crane, the support legs on both sides are naturally retracted as the lifting main beam is lifted. After the lifting main beam is lifted into place, the upper end of the support leg and the bottom beam on the lower side of the lifting main beam automatically form a docking state, and then the support legs are connected and fixed to the bottom beam by welding or bolting. After the support legs are connected and fixed to the bottom beam, the crossbeam is lifted by a hoist and connected between the support legs on both sides. When installing the gantry crane of the present application, it is only necessary to lift the lifting main beam to complete the installation of the gantry crane lifting main beam and support legs, which reduces the on-site installation space. The support legs and the bottom beam are automatically aligned, the installation efficiency is improved, and the safety risks during installation are reduced.

[0017] 2. When the gantry crane is installed, the crossbeam of the present invention is used to be placed on the track to support the support legs and the lifting main beam above the support legs; after the lifting main beam climbs into place, the crossbeam is connected between the two support legs to improve the stability of the gantry crane, achieving multiple uses while also realizing quick installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is a schematic diagram of the structure of the utility model in the first state;

[0020] Figure 2 for Figure 1 A in the middle is an enlarged structural diagram;

[0021] Figure 3 This is a structural diagram of the utility model in the second state.

[0022] In the picture:

[0023] Lifting main beam 100, bottom beam 110, first hinge seat 111, first flange 112, bolt 120;

[0024] Traveling wheel seat 200, frame 201, fourth hinge seat 201;

[0025] Support leg 300, second hinge seat 301, third hinge seat 302, second flange 303;

[0026] beam 400;

[0027] Track 500. DETAILED DESCRIPTION

[0028] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0029] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0031] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0032] See also Figure 1-3 As shown, a gantry crane includes a lifting main beam 100, a traveling wheel seat 200, a support leg 300 and a crossbeam 400, the support leg 300 is connected and supported between the lifting main beam 100 and the traveling wheel seat 200, the traveling wheel seat 200 is used to move on the track 500, and bottom beams 110 are respectively installed at the bottom of both ends of the lifting main beam 100, and the bottom beams 110 are located on both sides of the lifting main beam 100 and support legs 300 are respectively provided, and the lower ends of the support legs 300 are hinged to the traveling wheel seat 200; the gantry crane includes two states, in the first state, the upper ends of the support legs 300 are hinged to the bottom beam 110, and in the second state, the upper ends of the support legs 300 are fixedly connected to the bottom beam 110; the crossbeam 400 is used to be installed between the two support legs 300 on each side in the second state.

[0033] In the prior art, the lifting main beam 100 is used to install the lifting winch equipment, the support legs 300 are used to support the lifting main beam 100 to a certain height, the walking wheel seat 200 is used to drive the gantry crane to move on the track 500, and the crossbeam 400 is used to connect the support legs 300 on both sides to improve the stability of the gantry crane.

[0034] In this application, the gantry crane includes two states. In the first state, see Figure 1 , first hinge the upper end of the support leg 300 to the lifting main beam, and the walking wheel seat 200 is also hinged to the lower end of the support leg 300; in the second state, see Figure 3When the main crane 100 is lifted or hoisted by a lift or crane, the outriggers 300 on both sides naturally retract as the main crane beam 100 is lifted. After the main crane beam 100 is lifted into place, the upper ends of the outriggers 300 automatically form a docking state with the bottom beam 110 on the lower side of the main crane beam 100. Then, the outriggers 300 are connected and fixed to the bottom beam 110 by welding or bolting. When installing the gantry crane of the present application, only the main crane beam 100 needs to be lifted to complete the installation and connection of the main crane beam and the outriggers, which reduces the on-site installation space. The outriggers 300 and the bottom beam 110 are automatically aligned, which improves the installation efficiency and reduces the safety risks during installation.

[0035] After the supporting legs 300 are connected and fixed to the bottom beam 110 , the cross beam 400 is lifted by a hoist and connected between the supporting legs 300 on both sides.

[0036] For details, see Figure 1 A first hinge seat 111 is provided at both ends of the bottom beam 110, and a second hinge seat 301 is provided at the upper end of the support leg 300 and on the side away from the lifting main beam 100. The first hinge seat 111 and the second hinge seat 301 are hinged by a pin shaft.

[0037] See also Figure 3 In the second state, the upper end of the support leg 300 and the bottom beam 110 can be welded and fixed.

[0038] See also Figure 3 In the second state, the upper end of the support leg 300 and the bottom beam 110 can be connected and fixed by bolts 120.

[0039] When connected and fixed by bolts 120, the lower side of the bottom beam 110 is fixed with a first flange 112 at the position corresponding to the support leg 300, and the upper end of the support leg 300 is fixed with a second flange 303. In the second state, see Figure 3 The first flange 112 and the second flange 303 are connected and fixed by bolts 120.

[0040] For details, see Figure 2 The lower end of the support leg 300 is fixedly connected to a third hinge seat 302, and the top of the walking wheel seat 200 is fixedly connected to a fourth hinge seat 201. The third hinge seat 302 and the fourth hinge seat 201 are hinged by a pin.

[0041] In the first state, see Figure 1 The crossbeam 400 is used to support the legs 300 .

[0042] In the second state, the cross beam 400 is fixed to the legs 300 by welding or bolting. When bolting is adopted, flange plates can be welded to the inner side of the legs 300 and the two ends of the cross beam 400 respectively, and the flange plates are bolted together.

[0043] The working principle or action process of the utility model is as follows:

[0044] See also Figure 1 In the first state, the travel wheel seat 200 is first supported and positioned on the track 500. A crossbeam 400 is then placed between the two travel wheel seats 200 on each side of the track 500. One end of the support leg 300 is hinged to the travel wheel seat 200. The main lifting beam 100 is then hoisted between the two support legs 300 and hinged to the bottom beam 110 on the lower side of the main lifting beam 100. This completes the installation of the equipment on the main lifting beam 100.

[0045] See also Figure 3 In the second state, the main crane 100 is lifted or hoisted using a hoist or crane. The outriggers 300 on both sides naturally retract as the main crane beam 100 rises. The crossbeam 400 may be removed based on the site conditions. After the main crane beam 100 is lifted into position, the upper ends of the outriggers 300 automatically mate with the bottom beam 110 on the underside of the main crane beam 100. The outriggers 300 are then bolted to the bottom beam 110. A hoist is then suspended below the main crane beam 100 to lift the crossbeam 400 and connect it between the outriggers 300 on both sides.

[0046] In addition to being used for the installation or removal of the door machine described in this patent, this installation device and method can also be widely used on various large equipment, large steel components or structures with hinged legs. The principles and steps are similar to those described in this patent, but all fall within the scope of protection of this patent.

[0047] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A gantry crane comprising a lifting main beam (100), a traveling wheel seat (200), a support leg (300) and a crossbeam (400), wherein the support leg (300) is connected and supported between the lifting main beam (100) and the traveling wheel seat (200), and the traveling wheel seat (200) is used to move on a track (500), characterized in that: Bottom beams (110) are respectively installed at the bottom of both ends of the lifting main beam (100), and support legs (300) are respectively provided on both sides of the bottom beam (110) located on the lifting main beam (100), and the lower ends of the support legs (300) are hinged to the walking wheel seat (200); The gantry crane comprises two states. In the first state, the upper end of the support leg (300) is hinged to the bottom beam (110). In the second state, the upper end of the support leg (300) is fixedly connected to the bottom beam (110). The crossbeam (400) is used to be installed between the two supporting legs (300) on each side in the second state.

2. A gantry crane according to claim 1, characterized in that: A first hinge seat (111) is provided at each end of the bottom beam (110), and a second hinge seat (301) is provided at the upper end of the support leg (300) and on a side away from the lifting main beam (100). The first hinge seat (111) and the second hinge seat (301) are hinged via a pin.

3. A gantry crane according to claim 1, characterized in that: In the second state, the upper end of the support leg (300) is welded and fixed to the bottom beam (110).

4. A gantry crane according to claim 1, characterized in that: In the second state, the upper end of the support leg (300) is fixedly connected to the bottom beam (110) by bolts.

5. A gantry crane according to claim 4, characterized in that: A first flange (112) is fixedly connected to the lower side of the bottom beam (110) at a position corresponding to the support leg (300), and a second flange (303) is fixedly connected to the upper end of the support leg (300). In the second state, the first flange (112) and the second flange (303) are connected by bolts.

6. The gantry crane according to claim 1, characterized in that: The lower end of the support leg (300) is fixedly connected to a third hinge seat (302), the top of the walking wheel seat (200) is fixedly connected to a fourth hinge seat (201), and the third hinge seat (302) and the fourth hinge seat (201) are hinged via a pin shaft.

7. The gantry crane according to claim 1, characterized in that: In the first state, the crossbeam (400) is used to support the legs (300).

8. A gantry crane according to claim 1 or 7, characterized in that: In the second state, the crossbeam (400) and the supporting legs (300) are fixed by welding or by bolt connection.

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