Quick connecting structure for landing legs and lower cross beam of portal crane

Abstract

The utility model relates to the technical field of hoisting machinery, and particularly discloses a quick connecting structure for a landing leg and a lower cross beam of a portal crane, which comprises the landing leg, an operation opening is formed in the front surface of the landing leg, a fixing frame with holes is fixedly connected to the inner side wall of the operation opening, a locking cap is arranged in the fixing frame with holes, and the locking cap is fixedly connected with the lower cross beam of the portal crane. A connecting plate is arranged above the supporting legs, the stability of the connecting plate is ensured through the insertion matching of a connecting block, a limiting frame and a threaded locking rod with a fixing groove, a clamping groove and a connecting hole and the locking of a locking cap on the threaded locking rod, then the cross beam main body is placed on the connecting plate, and the connecting plate is fixed to the cross beam main body. According to the lower cross beam, the positioning pin and the clamping block are matched with the positioning opening and the connecting groove of the cross beam body, preliminary positioning is achieved, meanwhile, the positioning screw penetrates through the limiting insertion hole and is locked through the fastening cap, the reliability of connection is further ensured, and the problem that the lower cross beam is inconvenient to position, and consequently the installation process is tedious is effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of lifting machinery technology, and in particular to a quick connection structure between the outriggers and the lower crossbeam of a gantry crane. Background Technology

[0002] Lifting machinery refers to electromechanical equipment used for vertical lifting or vertical lifting and horizontal movement of heavy objects. Its scope is defined as elevators with a rated lifting capacity greater than or equal to 0.5t, cranes with a rated lifting capacity greater than or equal to 3t and a lifting height greater than or equal to 2m, and mechanical parking equipment with two or more floors. Gantry cranes are a type of lifting equipment widely used in ports, docks, warehouses, and construction sites. They have advantages such as simple structure, convenient operation, large lifting capacity, and wide operating range, effectively improving the efficiency of cargo loading and unloading and material handling. The main structure of a gantry crane includes outriggers, lower crossbeams, main beams, and lifting mechanisms. Among these, the connection structure between the outriggers and the lower crossbeam is a key component ensuring the overall stability and operational safety of the crane.

[0003] Currently, there are two main ways to connect the outriggers and lower crossbeams of gantry cranes: welding and bolting. While welding provides high connection strength, it is found that positioning the lower crossbeam is inconvenient when connecting the outriggers and the lower crossbeam, making the installation process cumbersome and time-consuming, thus reducing connection efficiency and failing to meet user needs. To address this, we propose a quick connection structure for the outriggers and lower crossbeams of gantry cranes. Utility Model Content

[0004] The purpose of this utility model is to provide a quick connection structure between the outriggers and the lower crossbeam of a gantry crane, which solves the problem that it is inconvenient to position the lower crossbeam, resulting in a cumbersome and time-consuming installation process, thereby reducing connection efficiency and failing to meet the needs of users.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A quick-connection structure for the outriggers and lower crossbeam of a gantry crane includes a support leg. An operating opening is provided on the front of the support leg. A perforated fixing bracket is fixedly connected to the inner wall of the operating opening. A locking cap is provided inside the perforated fixing bracket. A connecting plate is provided above the support leg. A snap-fit ​​block is fixedly connected to the upper surface of the connecting plate. A positioning screw is fixedly connected to the upper surface of the snap-fit ​​block. A crossbeam body is provided above the connecting plate. A limit insertion hole is provided on the upper surface of the crossbeam body. A fastening cap is provided above the limit insertion hole. The top end of the positioning screw passes through the limit insertion hole and is threadedly connected to the fastening cap. A connecting groove is provided on the bottom surface of the crossbeam body, and the connecting groove is adapted to the snap-fit ​​block. A fixing groove is provided at the top of the support leg. A connecting hole is provided in the bottom wall of the fixing groove. A snap-fit ​​groove is provided at the top of the support leg.

[0007] As a preferred embodiment of the quick connection structure between the outrigger and the lower crossbeam of a gantry crane according to this utility model, the upper surface of the perforated fixing frame is fixedly connected to two positioning blocks, and the upper surface of each positioning block is fixedly connected to the inner top wall of the operating port.

[0008] As a preferred embodiment of the quick connection structure between the outriggers and the lower crossbeam of a gantry crane according to this utility model, two positioning pins are fixedly connected to the upper surface of the connecting plate, and two positioning holes are opened on the bottom surface of the crossbeam body, and the positioning holes are adapted to the positioning pins.

[0009] As a preferred embodiment of the quick connection structure between the outrigger and the lower crossbeam of a gantry crane according to this utility model, the top of the outrigger is provided with two sets of limiting holes, and the bottom surface of the connecting plate is fixedly connected with two sets of positioning rods, and the positioning rods are adapted to the limiting holes.

[0010] As a preferred embodiment of the quick connection structure between the outrigger and the lower crossbeam of a gantry crane according to this utility model, a connecting block is fixedly connected to the bottom surface of the connecting plate, a threaded locking rod is fixedly connected to the bottom surface of the connecting block, and the connecting block is engaged with the fixing groove. The bottom end of the threaded locking rod passes through the connecting hole and the fixing bracket with holes in sequence and is threadedly connected to the locking cap.

[0011] In a preferred embodiment of the quick connection structure between the outrigger and the lower crossbeam of a gantry crane according to this utility model, a limiting frame is fixedly connected to the bottom surface of the connecting plate, and the limiting frame is engaged with the snap-fit ​​groove.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This quick-connection structure for the gantry crane's outriggers and lower crossbeam achieves rapid positioning by placing a connecting plate on top of the outrigger and inserting a positioning rod into the positioning hole, thus improving installation efficiency. The stability of the connecting plate is ensured by the interlocking of the connecting block, limit frame, and threaded locking rod with the fixing groove, snap-fit ​​groove, and connecting hole, as well as the locking cap securing the threaded locking rod. The crossbeam body is then placed on the connecting plate, and initial positioning is achieved by the matching of the positioning pin and snap-fit ​​block with the positioning port and connecting groove of the crossbeam body. Simultaneously, the positioning screw passes through the limit insertion hole and is locked using a fastening cap, further ensuring the reliability of the connection. This effectively solves the problem of inconvenient positioning of the lower crossbeam, which previously led to a cumbersome and time-consuming installation process. Attached Figure Description

[0014] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0015] Figure 1 This is a schematic diagram showing the disassembled structure of the connecting plate of a quick connection structure between the legs and the lower crossbeam of a gantry crane according to this utility model.

[0016] Figure 2 This is a top view of the support leg of a gantry crane with a quick connection structure between the support leg and the lower crossbeam according to the present invention.

[0017] Figure 3 This is a bottom view of the main body of the crossbeam of a gantry crane with a quick connection structure between the outriggers and the lower crossbeam according to the present invention.

[0018] Figure 4 This is a bottom view of the connecting plate of the quick connection structure between the legs and the lower crossbeam of a gantry crane according to the present invention.

[0019] In the diagram: 1. Support leg; 2. Operating port; 3. Fixing bracket with hole; 4. Locking cap; 5. Positioning block; 6. Connecting plate; 7. Snap-fit ​​block; 8. Positioning screw; 9. Positioning pin; 10. Crossbeam body; 11. Limiting insertion hole; 12. Fastening cap; 13. Connecting hole; 14. Fixing groove; 15. Threaded locking rod; 16. Snap-fit ​​groove; 17. Limiting hole; 18. Connecting groove; 19. Positioning rod; 20. Limiting frame; 21. Connecting block; 22. Positioning port. Detailed Implementation

[0020] 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 scope of protection of the present utility model. Unless otherwise specified, the methods used in the present utility model are conventional methods; unless otherwise specified, the raw materials and apparatus used are conventional commercially available products.

[0021] Please see Figure 1-4 In this utility model, a quick connection structure between the outrigger and the lower crossbeam of a gantry crane includes a support leg 1, an operating port 2 on the front of the support leg 1, a fixed bracket 3 with holes fixedly connected to the inner side wall of the operating port 2, a locking cap 4 inside the fixed bracket 3, a connecting plate 6 above the support leg 1, a snap-fit ​​block 7 fixedly connected to the upper surface of the connecting plate 6, a positioning screw 8 fixedly connected to the upper surface of the snap-fit ​​block 7, a crossbeam body 10 above the connecting plate 6, a limit insertion hole 11 on the upper surface of the crossbeam body 10, a fastening cap 12 above the limit insertion hole 11, the top end of the positioning screw 8 passing through the limit insertion hole 11 and threadedly connected to the fastening cap 12, a connecting groove 18 on the bottom surface of the crossbeam body 10, and the connecting groove 18 is adapted to the snap-fit ​​block 7, a fixing groove 14 on the top end of the support leg 1, a connecting hole 13 on the bottom wall of the fixing groove 14, and a snap-fit ​​groove 16 on the top end of the support leg 1.

[0022] In this embodiment: the stability of the connecting plate 6 is ensured by the insertion and cooperation of the connecting block 21, the limiting frame 20 and the threaded locking rod 15 with the fixing groove 14, the snap-fit ​​groove 16 and the connecting hole 13, and the locking cap 4 locking the threaded locking rod 15. Then, the crossbeam body 10 is placed on the connecting plate 6, and the initial positioning is achieved by the adaptation of the positioning pin 9 and the snap-fit ​​block 7 with the positioning port 22 and the connecting groove 18 of the crossbeam body 10. At the same time, the positioning screw 8 passes through the limiting insertion hole 11 and is locked by the fastening cap 12.

[0023] As a technical optimization of this utility model, the upper surface of the perforated fixing bracket 3 is fixedly connected to two positioning blocks 5, and the upper surface of each positioning block 5 is fixedly connected to the inner top wall of the operating port 2. The upper surface of the connecting plate 6 is fixedly connected to two positioning pins 9, and the bottom surface of the crossbeam body 10 is provided with two positioning ports 22, and the positioning ports 22 are adapted to the positioning pins 9.

[0024] In this embodiment: the positioning block 5 prevents the perforated fixing bracket 3 from deforming, and the positioning pin 9 and positioning port 22 facilitate the initial positioning of the crossbeam body 10.

[0025] As a technical optimization of this utility model, the top of the support leg 1 is provided with two sets of limiting holes 17, the bottom surface of the connecting plate 6 is fixedly connected with two sets of positioning rods 19, and the positioning rods 19 are adapted to the limiting holes 17. The bottom surface of the connecting plate 6 is fixedly connected with a connecting block 21, the bottom surface of the connecting block 21 is fixedly connected with a threaded locking rod 15, and the connecting block 21 is engaged with the fixing groove 14. The bottom end of the threaded locking rod 15 passes through the connecting hole 13 and the fixing bracket with holes 3 in sequence and is threadedly connected to the locking cap 4.

[0026] In this embodiment: the matching of the limiting hole 17 and the positioning rod 19 facilitates the positioning of the connecting plate 6, and the matching of the threaded locking rod 15 and the locking cap 4 facilitates its installation and locking.

[0027] As a technical optimization of this utility model, the bottom surface of the connecting plate 6 is fixedly connected to the limiting frame 20, and the limiting frame 20 is engaged with the snap-fit ​​groove 16.

[0028] In this embodiment, the connection plate 6 can be snapped into the support leg 1 by the cooperation of the limiting frame 20 and the snap-fit ​​groove 16, thus ensuring the stability of the connection plate 6.

[0029] The working principle of this utility model is as follows: In use, the connecting plate 6 is first placed at the top of the support leg 1, and the positioning rod 19 is inserted into the limiting hole 17. At the same time, the connecting block 21, the limiting frame 20, and the threaded locking rod 15 are inserted into the fixing groove 14, the snap-fit ​​groove 16, and the connecting hole 13. The threaded locking rod 15 is locked with the locking cap 4 to ensure the stability of the connecting plate 6. Then, the crossbeam body 10 is placed on the connecting plate 6, so that the positioning pin 9 and the snap-fit ​​block 7 of the connecting plate 6 are matched with the positioning port 22 and the connecting groove 18 of the crossbeam body 10 to achieve initial positioning. At the same time, the positioning screw 8 passes through the limiting insertion hole 11 and is locked with the fastening cap 12 to ensure the reliability of the connection, thereby improving the efficiency of the quick connection between the support leg 1 and the crossbeam body 10.

[0030] However, the above description is merely a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model. For those skilled in the art, it is obvious that this utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model.

Claims

1. A quick-connect structure for the outriggers and lower crossbeam of a gantry crane, characterized in that: Includes a support leg (1), the support leg (1) has an operating opening (2) on its front, a perforated fixing bracket (3) is fixedly connected to the inner wall of the operating opening (2), the perforated fixing bracket (3) has a locking cap (4) inside, a connecting plate (6) is provided above the support leg (1), a snap-fit ​​block (7) is fixedly connected to the upper surface of the connecting plate (6), a positioning screw (8) is fixedly connected to the upper surface of the snap-fit ​​block (7), a crossbeam body (10) is provided above the connecting plate (6), and the upper surface of the crossbeam body (10) has a... A limiting insertion hole (11) is provided on the surface of the beam body (10), and a fastening cap (12) is provided above the limiting insertion hole (11). The top end of the positioning screw (8) passes through the limiting insertion hole (11) and is threadedly connected to the fastening cap (12). A connecting groove (18) is provided on the bottom surface of the beam body (10), and the connecting groove (18) is adapted to the snap-fit ​​block (7). A fixing groove (14) is provided on the top end of the support leg (1), and a connecting hole (13) is provided on the bottom wall of the fixing groove (14). A snap-fit ​​groove (16) is provided on the top end of the support leg (1).

2. The quick connection structure between the outrigger and the lower crossbeam of a gantry crane according to claim 1, characterized in that: The upper surface of the perforated bracket (3) is fixedly connected to two positioning blocks (5), and the upper surface of each positioning block (5) is fixedly connected to the inner top wall of the operating port (2).

3. The quick connection structure between the outrigger and the lower crossbeam of a gantry crane according to claim 1, characterized in that: The upper surface of the connecting plate (6) is fixedly connected with two positioning pins (9), and the bottom surface of the crossbeam body (10) is provided with two positioning holes (22), and the positioning holes (22) are adapted to the positioning pins (9).

4. The quick connection structure between the outriggers and the lower crossbeam of a gantry crane according to claim 1, characterized in that: The top of the support leg (1) is provided with two sets of limiting holes (17), and the bottom surface of the connecting plate (6) is fixedly connected with two sets of positioning rods (19), and the positioning rods (19) are adapted to the limiting holes (17).

5. The quick connection structure between the outrigger and the lower crossbeam of a gantry crane according to claim 1, characterized in that: The bottom surface of the connecting plate (6) is fixedly connected to a connecting block (21), and the bottom surface of the connecting block (21) is fixedly connected to a threaded locking rod (15). The connecting block (21) is engaged with the fixing groove (14). The bottom end of the threaded locking rod (15) passes through the connecting hole (13) and the hole-fixed bracket (3) in sequence and is threadedly connected to the locking cap (4).

6. The quick connection structure between the outrigger and the lower crossbeam of a gantry crane according to claim 1, characterized in that: The bottom surface of the connecting plate (6) is fixedly connected to a limiting frame (20), and the limiting frame (20) is engaged with the snap-fit ​​groove (16).

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