Rigid connecting device of portal crane
By setting a rigid connection device of slide rail and slider on the lifting device, the problems of swaying and collaborative operation of traditional wire rope connection are solved, realizing stable, safe and convenient track bed lifting operation of gantry crane.
Patent Information
- Application Number
- CN202520604456.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-01
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-04-01
AI Technical Summary
When traditional gantry cranes are connected to the track bed slab via wire ropes, there is a risk of swaying and safety hazards, and two cranes are required to work together, which increases the difficulty of operation and workload.
A rigid connection device with a slide rail and a slider installed above the lifting device is adopted. The top of the slider is fixedly connected to the lifting lug and the crane hook. The slider is stably locked by an eccentric wheel and a locking assembly, which reduces swaying and simplifies operation.
It improves the stability and safety of the lifting process, reduces the difficulty of operation, reduces the burden on staff, and achieves fast and accurate connection.
Smart Images
Figure CN223892314U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of crane connection technology, specifically to a rigid connection device for a gantry crane. Background Technology
[0002] Ballastless track has advantages such as high stability, high smoothness and low maintenance cost, and is widely used in high-speed railways and urban rail transit.
[0003] The lifting and installation of the track slab is a crucial step in the construction of ballastless track. Traditionally, gantry cranes are used to lift the track slab by connecting it to a lifting device on the slab with a wire rope. However, this method is prone to causing the track slab to sway, posing a safety hazard. Furthermore, it usually requires two gantry cranes to work together, which places high demands on synchronization and increases the difficulty and workload of the operation. Utility Model Content
[0004] To address the problems existing in the prior art, this utility model provides a rigid connection device for a gantry crane.
[0005] The technical solution adopted by this utility model is as follows: A rigid connection device for a gantry crane is set above a ballastless track bed slab lifting device, including a slide rail connected to the top of the lifting device, a slider slidably fitted on the slide rail, a lifting lug fixedly connected to the top of the slider and cooperating with the hook of the gantry crane, and a locking assembly provided on the slider; the locking assembly includes a fixed plate fixed to the outer wall of the slider, an eccentric wheel rotatably connected to the fixed plate, and the eccentric wheel penetrates the outer wall of the slider, a movable part elastically slidably connected to the internal slide groove of the slider, a first tooth installed on the side of the movable part near the slide rail, and the other side abutting against the side wall of the eccentric wheel, a second tooth installed on both sides of the outer wall of the slide rail and cooperating with the first tooth, and a handle installed on the eccentric wheel; the outer wall of the slider is also provided with a handle fixing assembly.
[0006] Furthermore, the handle fixing assembly includes a fixing member fixedly connected to the outer wall of the slider, the fixing member having a limit groove, and a locking bolt installed in the limit groove.
[0007] Furthermore, the lifting device is installed on the rail, the rail is installed on the sleeper by a locking buckle, the sleeper is installed on the track bed slab, and the track bed slab is installed on the base plate.
[0008] Furthermore, the lifting device is provided in two sets along the length of the rail, and a crossbeam is installed between the two sets of lifting devices. A support beam is installed above the crossbeam and is fixedly connected to the slide rail.
[0009] Furthermore, the lifting device includes a clamp mounted on a rail, a spreader beam is provided above the clamp, and a bolt is bolted to the spreader beam and the clamp.
[0010] Furthermore, a tension spring is installed between the moving part and the internal groove of the slider, with one end of the tension spring installed on the moving part and the other end installed on the inner wall of the slider.
[0011] Furthermore, the locking components are symmetrically arranged on both sides of the outer wall of the slider.
[0012] Furthermore, the handle fixing components are symmetrically arranged on both sides of the outer wall of the slider.
[0013] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:
[0014] The rigid connection device of this gantry crane effectively solves the swaying problem caused by the traditional flexible connection method of steel wire rope by fixing a slide rail above the lifting device, fixing a lifting lug to the top of the slider on the slide rail, and connecting the lifting lug to the hook on the gantry crane. This reduces safety hazards and ensures the stability of the construction process.
[0015] Furthermore, the cooperation between the slide rail and the slider allows the position of the lifting lugs on the slider to be changed, enabling the slider to be moved to align with the hook and thus achieve a quick and precise connection. This design not only reduces swaying during lifting and improves safety, but also simplifies operation, eliminating the need for operators to frequently move the crane. Simply adjusting the slider position is sufficient to align and connect the hook, greatly reducing the workload of the workers. Attached Figure Description
[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 A structural schematic diagram provided for an embodiment of this utility model;
[0018] Figure 2 for Figure 1 Cross-sectional view of the eccentric wheel, slide rail, and slider;
[0019] Figure 3 for Figure 2 Working status diagram;
[0020] Figure 4 for Figure 1 Side view of the central rail, clamps, and spreader beam.
[0021] Figure descriptions: 1. Base plate; 2. Track bed plate; 3. Sleeper; 4. Lock; 5. Rail; 6. Gantry crane; 7. Hook; 8. Clamp; 9. Spreader beam; 10. Screw; 11. Crossbeam; 12. Support beam; 13. Slide rail; 14. Slider; 15. Lifting lug; 16. Eccentric wheel; 17. Fixed plate; 18. Handle; 19. Moving part; 20. Fixed part; 21. Limiting groove; 22. Locking bolt; 23. First tooth; 24. Second tooth; 25. Tension spring. Detailed Implementation
[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0024] In the description of this utility model, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" appear to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0025] The following is combined with Figures 1-4 This utility model will be described in detail.
[0026] Example
[0027] like Figure 1As shown, a rigid connection device for a gantry crane is installed above a ballastless track bed slab lifting device. It includes a slide rail 13 connected to the lifting device. The slide rail 13 is a T-shaped slide rail; its specific model is not limited here, as long as it meets the actual usage requirements. A slider 14 is slidably fitted on the slide rail 13. A lifting lug 15, which engages with the hook 7 on the gantry crane 6, is fixedly connected to the top of the slider 14. A locking assembly is provided on the slider 14. When the lifting lug 15 on the slider 14 slides below the hook 7 via the slide rail 13, the locking assembly can be used to fix the slider 14 to the slide rail 13, without affecting the subsequent lifting of the track bed slab 2.
[0028] like Figure 2 and Figure 3 As shown, the locking assembly includes a fixing plate 17 fixed to the outer wall of the slider 14. An eccentric wheel 16 is rotatably connected to the fixing plate 17, and the eccentric wheel 16 penetrates the outer wall of the slider 14. A movable member 19 is elastically slidably connected to a groove inside the slider 14. Utilizing the eccentric characteristic of the eccentric wheel 16, when the eccentric wheel 16 rotates, it will push the movable member 19 to elastically slide inside the slider 14.
[0029] like Figure 2 and Figure 3 As shown, the elastic sliding design specifically involves setting a transverse groove inside the slider 14, allowing the moving part 19 to slide only laterally within the slider 14. A tension spring 25 is installed between the moving part 19 and the groove inside the slider 14, with one end of the spring 25 mounted on the moving part 19 and the other end mounted on the inner wall of the slider 14. The design of the tension spring 25 allows the moving part 19 to automatically reset after the eccentric wheel 16 is rotated in the opposite direction, without affecting subsequent movement of the slider 14.
[0030] The movable part 19 is equipped with a first tooth 23 on one side near the slide rail 13, and the other side is in contact with the side wall of the eccentric wheel 16. The outer walls of the slide rail 13 are equipped with second teeth 24 that cooperate with the first tooth 23. The cooperation of the first tooth 23 and the second tooth 24 makes the slider 14 and the slide rail 13 form a lateral limit, so that the slider 14 cannot slide on the slide rail 13.
[0031] A handle 18 is installed on the eccentric wheel 16. The handle 18 saves time and effort, making it convenient for the operator to turn the eccentric wheel 16.
[0032] like Figure 2 and Figure 3 As shown, the outer wall of the slider 14 is also provided with a handle fixing assembly. The handle fixing assembly includes a fixing member 20 fixedly connected to the outer wall of the slider 14. A limit groove 21 is opened on the fixing member 20, and a locking bolt 22 is installed in the limit groove 21.
[0033] The design of the handle fixing component prevents the handle 18 on the eccentric wheel 16 from falling under the action of gravity, thereby preventing the eccentric wheel 16 from rotating and resetting, ensuring that the slider 14 is properly locked on the slide rail 13, and the subsequent lifting of the track bed 2 can be carried out normally.
[0034] Turning the handle 18 causes the eccentric wheel 16 to rotate, pushing the first tooth 23 on the moving part 19 to engage with the second tooth 24 on the slide rail 13, thus locking the slider 14. As the handle 18 is turned upwards, it slides into the arc-shaped limiting groove 21 of the fixing part 20, and then the locking bolt 22 fixes the handle 18 in the limiting groove 21. The limiting groove 21 is designed according to the movement trajectory of the handle 18.
[0035] Locking components are symmetrically arranged on both sides of the outer wall of the slider 14. To ensure stability and safety during lifting, i.e., to ensure that the slider 14 can be firmly locked onto the slide rail 13, locking components are provided on both sides of the outer wall of the slider 14. Similarly, handle fixing components that cooperate with the locking components are also symmetrically arranged on both sides of the outer wall of the slider 14.
[0036] like Figure 1 As shown, the lifting device is installed on the rail 5, the rail 5 is installed on the sleeper 3 via the locking buckle 4, the sleeper 3 is installed on the track bed slab 2, and the track bed slab 2 is installed on the base plate 1. This part is prior art and will not be described in detail here.
[0037] like Figure 1 As shown, two sets of lifting devices are arranged along the length of the rail 5. A crossbeam 11 is installed between the two sets of lifting devices, and a support beam 12 is installed above the crossbeam 11. The support beam 12 is fixedly connected to the slide rail 13. The crossbeam 11 is used to connect the two sets of lifting devices, and the support beam 12 is used to support the slide rail 13.
[0038] like Figure 1 and Figure 4 As shown, the lifting device includes a clamp 8 installed on the rail 5, a spreader beam 9 is provided above the clamp 8, and a screw rod 10 is bolted to the spreader beam 9 and the clamp 8. The cooperation of the clamp 8, the spreader beam 9 and the screw rod 10 makes the connection between the slide rail 14 and the rail 5 more stable, which is conducive to the stable progress of subsequent lifting operations.
[0039] Specifically, when using the rigid connection device of the gantry crane, the lifting device is first installed on the rail 5, and then the crossbeam 11 is fixedly connected between the two sets of lifting devices. A support beam 12 is installed above the crossbeam 11, and a slide rail 13 is installed above the support beam 12. The installation method can be welding or bolt fixing connection.
[0040] Then, move the slider 14 so that the lifting lug 15 on the slider 14 is aligned with the hook 7 of the gantry crane 6. Then, use the locking assembly to fix the slider 14 on the slide rail 13 and the handle 18 is also fixed on the handle fixing assembly. Start the gantry crane so that the hook 7 hooks the lifting lug 15, and the track bed slab 2 can be lifted stably.
[0041] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A rigid connecting device for a gantry crane, disposed above a ballastless track slab lifting device, characterized in that: Includes a slide rail (13) connected above the lifting device, a slider (14) slidably fitted on the slide rail (13), a lifting lug (15) fixedly connected to the top of the slider (14) and connected to the hook (7) on the gantry crane (6), and a locking component is provided on the slider (14); The locking assembly includes a fixing plate (17) fixed to the outer wall of the slider (14), an eccentric wheel (16) rotatably connected to the fixing plate (17), and the eccentric wheel (16) penetrates the outer wall of the slider (14). A movable part (19) is elastically slidably connected to the internal groove of the slider (14). A first tooth (23) is installed on one side of the movable part (19) near the slide rail (13), and the other side is in contact with the side wall of the eccentric wheel (16). A second tooth (24) that engages with the first tooth (23) is installed on both sides of the outer wall of the slide rail (13). A handle (18) is installed on the eccentric wheel (16). The outer wall of the slider (14) is also provided with a handle fixing assembly.
2. The rigid connection device for a gantry crane according to claim 1, characterized in that: The handle fixing assembly includes a fixing member (20) fixedly connected to the outer wall of the slider (14), and a limiting groove (21) is provided on the fixing member (20), and a locking bolt (22) is installed in the limiting groove (21).
3. The rigid connection device for a gantry crane according to claim 1, characterized in that: The lifting device is installed on the rail (5), the rail (5) is installed on the sleeper (3) by the lock (4), the sleeper (3) is installed on the track bed slab (2), and the track bed slab (2) is installed on the base plate (1).
4. The rigid connection device for a gantry crane according to claim 3, characterized in that: Two sets of lifting devices are arranged along the length of the rail (5). A crossbeam (11) is installed between the two sets of lifting devices. A support beam (12) is installed above the crossbeam (11). The support beam (12) is fixedly connected to the slide rail (13).
5. The rigid connection device for a gantry crane according to claim 4, characterized in that: The lifting device includes a clamp (8) installed on the rail (5), a spreader beam (9) is provided above the clamp (8), and a screw (10) is bolted between the spreader beam (9) and the clamp (8).
6. The rigid connection device for a gantry crane according to claim 1, characterized in that: A tension spring (25) is installed between the movable part (19) and the internal groove of the slider (14). One end of the tension spring (25) is installed on the movable part (19), and the other end is installed on the inner wall of the slider (14).
7. The rigid connection device for a gantry crane according to claim 1, characterized in that: The locking components are symmetrically arranged on both sides of the outer wall of the slider (14).
8. The rigid connection device for a gantry crane according to claim 1, characterized in that: The handle fixing components are symmetrically arranged on both sides of the outer wall of the slider (14).