Maintenance hanging bracket for tail gate tunnel bridge crane

Abstract

The utility model provides a maintenance hanging bracket for a tail gate tunnel bridge crane, and relates to the technical field of hydropower station equipment maintenance. The overhauling hanging bracket comprises a cross beam, a first supporting plate and a second supporting plate, the electric hoist comprises a moving assembly, and the electric hoist is hung on the first supporting plate through the moving assembly; one end of each side supporting frame is fixed to the two ends of the cross beam respectively, and the end, away from the cross beam, of each side supporting frame is fixed to the tail gate hole bridge crane platform; the connecting device is arranged between the cross beam and the side supporting frame and used for fixedly connecting the cross beam to the side supporting frame and limiting the connecting angle between the cross beam and the side supporting frame when the overhauling hanging bracket is assembled. According to the technical scheme, a stable and reliable maintenance supporting structure can be provided for the bridge crane, and the overall stability and reliability of the maintenance hanging bracket are improved by arranging the connecting devices between the cross beams and the side supporting frames.

Description

Technical Field

[0001] This utility model relates to the field of hydropower station equipment maintenance technology, and in particular to a maintenance hanger for a tailgate tunnel bridge crane. Background Technology

[0002] Bridge cranes are typically installed in the tailgate tunnel of hydropower stations, primarily for the installation, inspection, and routine maintenance of the tailgate gates and gate slots. However, due to the limited space and complex environment of the tailgate tunnel itself, current bridge cranes often lack dedicated maintenance supports. The lack of maintenance supports hinders the bridge cranes from undergoing convenient periodic inspections and maintenance, leading to problems such as untimely handling of equipment wear and tear and difficulty in detecting potential faults, thus affecting the overall safety and reliability of the tailgate tunnel operation.

[0003] Especially in the tailgate tunnel environment where the bridge crane structure is relatively large or operations are frequent, it is impossible to achieve rapid and stable bridge crane maintenance, which can easily lead to increased operation and maintenance costs and increased safety risks. Therefore, there is an urgent need to provide a maintenance hanger structure that can adapt to the installation conditions of the bridge crane platform in the tailgate tunnel, has good load-bearing capacity, is easy to operate and install, and is stable and reliable. Utility Model Content

[0004] The purpose of this utility model is to provide a maintenance support frame for a tailgate tunnel bridge crane, which can provide a stable, reliable and easy-to-install maintenance support structure for the bridge crane.

[0005] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

[0006] According to one aspect of the present invention, a maintenance hanger for a tailgate tunnel crane is provided, the maintenance hanger being fixedly mounted on the tailgate tunnel crane platform, the maintenance hanger comprising:

[0007] The crossbeam includes the first support plate;

[0008] An electric hoist, including a moving component, wherein the electric hoist is attached to the first support plate via the moving component;

[0009] Two side support frames, one end of each side support frame is fixed to both ends of the crossbeam, and the end of each side support frame away from the crossbeam is fixed to the tailgate tunnel crane platform;

[0010] A connecting device is disposed between the crossbeam and the side support frame, used to fix the crossbeam to the side support frame and limit the connection angle between the crossbeam and the side support frame when assembling the maintenance hanger.

[0011] According to one embodiment of the present invention, the connecting device includes a first connecting plate and a second connecting plate;

[0012] The first connecting plate is disposed at both ends of the crossbeam, and one side is fixedly connected to the side of the first support plate. One side of the second connecting plate is fixedly connected to the end face of the side support frame near the crossbeam. The first connecting plate and the second connecting plate have a length direction, and the length direction is along the extension direction of the crossbeam.

[0013] The first connecting plate and the second connecting plate are fixedly connected by fasteners provided on the side along the length direction, thereby enabling the crossbeam to be fixedly connected to the side support frame and limiting the connection angle between the crossbeam and the side support frame when assembling the maintenance hanger.

[0014] According to one embodiment of the present invention, the second connecting plate further includes an auxiliary limiting plate, which is disposed on the side of the second connecting plate away from the first connecting plate and is located between the fastener and the side support frame. The extending direction of the auxiliary limiting plate is perpendicular to the extending direction of the second connecting plate and the extending direction of the auxiliary limiting plate is along the length direction.

[0015] The auxiliary limiting plate is fixedly connected to the side adjacent to the end face, and is used to limit and align the centerline position of the second connecting plate to the centerline position of the end face when the second connecting plate is fixedly connected to the end face of the side support frame.

[0016] According to one embodiment of the present invention, a plurality of reinforcing ribs are provided on the side of the auxiliary limiting plate away from the side support frame, and the reinforcing ribs are used to fix the auxiliary limiting plate and the second connecting plate; and

[0017] The reinforcing ribs are not uniformly distributed between the auxiliary limiting plate and the second connecting plate, and the number of the reinforcing ribs at the end closer to the side support frame is greater than the number of the reinforcing ribs at the end farther away from the side support frame. The fasteners are arranged around the positions of the reinforcing ribs.

[0018] According to one embodiment of the present invention, the side support frame includes:

[0019] The support column is fixed at one end to the end of the crossbeam;

[0020] At least two support rods are provided on the support column at one end away from the crossbeam. One end of each support rod is fixed on opposite sides of the support column, and the other end extends outward and is on the same extension plane as the support column.

[0021] A connecting rod is disposed on one end of the support column away from the crossbeam, for rigidly connecting the support column and the support rod.

[0022] According to one embodiment of the present invention, the connecting rod includes:

[0023] A bottom connecting rod is provided on the support column at one end away from the crossbeam, and the end face of the support column is connected to the midpoint of the bottom connecting rod. The end of the support rod away from the support column is connected to both ends of the bottom connecting rod.

[0024] At least one intermediate connecting rod is provided, which is connected between the support rods. The intermediate connecting rod is arranged parallel to the bottom connecting rod and its length gradually decreases, and is used to connect the support rod and the support column.

[0025] According to one embodiment of the present invention, the included angle between the support rod and the support column is between 30° and 60°.

[0026] According to one embodiment of the present invention, the crossbeam further includes a second support plate and a connecting plate. The connecting plate is disposed between the first support plate and the second support plate, and the extending direction of the connecting plate is perpendicular to the first support plate and the second support plate, respectively, for connecting the first support plate and the second support plate and enhancing the support strength of the crossbeam.

[0027] The crossbeam also includes limiting blocks, which are fixedly installed at both ends of the connecting plate, and the limiting blocks are at least a preset safe distance from the side support frame, in order to limit the movement range of the electric hoist on the crossbeam.

[0028] According to one embodiment of the present invention, the maintenance hanger further includes a center of gravity offset device. The center of gravity offset device is movably disposed on the side of the crossbeam away from the side support frame. When the electric hoist is hoisting the bridge crane, it moves in the opposite direction to the moving direction of the electric hoist, so that the hoisting center of gravity of the maintenance hanger is as close as possible to the middle position between the two side support frames.

[0029] According to one embodiment of the present invention, the center of gravity offset device includes a movable guide rail and a gravity block, the movable guide rail is fixedly mounted on the crossbeam, and the gravity block is slidably connected to the movable guide rail;

[0030] When the gravity block is driven, it slides along the moving guide rail, so that when the electric hoist is hoisting the bridge machine, it can move in the opposite direction to the moving direction of the electric hoist, so that the hoisting center of gravity of the maintenance frame is as close as possible to the middle position between the two side support frames.

[0031] As can be seen from the above technical solution, this utility model possesses at least one of the following advantages and positive effects:

[0032] By fixing the maintenance hanger to the bridge crane platform in the tailgate tunnel, a stable and reliable maintenance support structure can be provided for the bridge crane even in confined space conditions. The crossbeam and its first support plate provide guiding support for the electric hoist's attachment and movement, facilitating convenient hoisting and repositioning of heavy objects during maintenance. By installing side support frames at both ends of the crossbeam and fixing the end of the side support frame away from the crossbeam to the bridge crane platform, the overall load-bearing stability and deformation resistance of the hanger can be effectively improved, ensuring structural safety during maintenance. Furthermore, by installing a connecting device between the crossbeam and the side support frames, the crossbeam and side support frames can be quickly positioned and reliably connected during hanger assembly, while limiting the connection angle between them to prevent crossbeam swaying or lateral displacement due to stress during use, thus improving the overall stability and reliability of the hanger. Therefore, this invention provides a convenient, stable, and reliable working platform for the periodic maintenance of bridge cranes in the space-constrained environment of the tailgate tunnel, significantly improving the problem of ineffective bridge crane maintenance in related technologies. Attached Figure Description

[0033] The above and other features and advantages of this invention will become more apparent from a detailed description of exemplary embodiments with reference to the accompanying drawings.

[0034] Figure 1 This is a front view structural diagram of the maintenance hanger for the tailgate tunnel crane installed on the platform of the tailgate tunnel crane in some embodiments of this utility model.

[0035] Figure 2 This is a three-dimensional structural schematic diagram of the maintenance hanger for the tailgate tunnel crane in some embodiments of this utility model.

[0036] Figure 3 yes Figure 2 A partially enlarged schematic diagram of the maintenance hanger.

[0037] The annotations for the main components in the diagram are explained below:

[0038] 00. Tailgate tunnel crane platform; 10. Maintenance gantry;

[0039] 1. Crossbeam; 11. First support plate; 12. Second support plate; 13. Connecting plate; 14. Limiting block;

[0040] 2. Electric hoist; 21. Moving component;

[0041] 3. Side support frame; 31. Support column; 32. Support rod; 33. Connecting rod; 331. Bottom connecting rod; 332. Middle connecting rod;

[0042] 4. Connecting device; 41. First connecting plate; 42. Second connecting plate; 421. Auxiliary limiting plate; 422. Reinforcing rib plate; 43. Fastener;

[0043] 5. Center of gravity offset device; 51. Moving guide rail; 52. Gravity block. Detailed Implementation

[0044] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore their detailed description will be omitted.

[0045] In this utility model, the terms "a", "one", "the", "the", and "at least one" are used to indicate the existence of one or more elements / components / etc.; the terms "comprising", "including", and "having" are used to indicate an open-ended inclusion meaning and to mean that there may be other elements / components / etc. in addition to the listed elements / components / etc.; the terms "first", "second", and "third", etc., are used only as markings and are not a limitation on the number of objects.

[0046] This utility model proposes a maintenance hanger for a tailgate tunnel crane. The maintenance hanger 10 is fixedly installed on the tailgate tunnel crane platform 00. The maintenance hanger 10 may include a crossbeam 1, an electric hoist 2, two side support frames 3, and a connecting device 4. Wherein:

[0047] The crossbeam 1 includes a first support plate 11, and the electric hoist 2 is attached to the first support plate 11 via a moving assembly 21. One end of each of the two side support frames 3 is fixed to both ends of the crossbeam 1, and the other end is fixed to the tailgate tunnel crane platform 00. A connecting device 4 is provided between the crossbeam 1 and the side support frames 3, and is used to fix the crossbeam 1 to the side support frames 3 during the assembly of the maintenance hanger 10, and to limit the connection angle between the crossbeam 1 and the side support frames 3.

[0048] The first support plate 11 of the crossbeam 1 provides a mounting point for the electric hoist 2. The electric hoist 2 moves on the first support plate 11 via the moving component 21, facilitating hoisting operations. One end of the side support frame 3 is fixed to the crossbeam 1, and the other end is fixed to the bridge crane platform 00, ensuring the stability of the maintenance hanger 10. The connecting device 4 achieves a fixed connection between the crossbeam 1 and the side support frame 3 through the first connecting plate 41 and the second connecting plate 42, and limits the connection angle with fasteners 43 to ensure accuracy and stability during assembly.

[0049] Specifically, the first connecting plate 41 is disposed at both ends of the crossbeam 1 and is fixedly connected to the side of the first support plate 11, and the second connecting plate 42 is fixedly connected to the end face of the side support frame 3 near the crossbeam 1. The length direction of the first connecting plate 41 and the second connecting plate 42 is along the extension direction of the crossbeam 1, and they are fixedly connected by fasteners 43 disposed on the side in the length direction, thereby realizing the fixed connection of the crossbeam 1 to the side support frame 3 and limiting the connection angle between the crossbeam 1 and the side support frame 3 when assembling the maintenance hanger 10.

[0050] Furthermore, the design of the connecting device 4 enables the maintenance hanger 10 to quickly and accurately connect the crossbeam 1 to the side support frame 3 during assembly, while limiting the connection angle to avoid installation problems caused by angular deviations. This design not only improves the assembly efficiency of the maintenance hanger 10 but also enhances its stability and safety during use.

[0051] Through the rational design of the crossbeam 1, electric hoist 2, side support frame 3 and connecting device 4, the maintenance hanger 10 can be quickly installed in the space-constrained tail gate tunnel, solving the problem of difficult installation of the maintenance hanger 10 for bridge cranes in tail gate tunnels. The precise design of the connecting device 4 and the stable design of the side support frame 3 ensure the assembly efficiency and stability of the maintenance hanger 10, providing reliable support for the regular maintenance of the bridge crane.

[0052] Bridge cranes are typically installed in the tailgate tunnel of hydropower stations to install and maintain the gates and gate slots. Due to limitations in the size of the tailgate tunnel and the site location, bridge cranes are rarely equipped with maintenance hangers. This problem prevents regular maintenance of the bridge cranes and therefore requires improvement.

[0053] In one example embodiment of this utility model, the connecting device 4 includes a first connecting plate 41 and a second connecting plate 42. The first connecting plate 41 is disposed at both ends of the crossbeam 1, with one side fixedly connected to the side of the first support plate 11. One side of the second connecting plate 42 is fixedly connected to the end face of the side support frame 3 near the end of the crossbeam 1. The first connecting plate 41 and the second connecting plate 42 have a length direction, which is along the extension direction of the crossbeam 1. The first connecting plate 41 and the second connecting plate 42 are fixedly connected by fasteners 43 disposed on their sides in the length direction, thereby achieving the goal of fixing the crossbeam 1 to the side support frame 3 and limiting the connection angle between the crossbeam 1 and the side support frame 3 when assembling the maintenance hanger 10.

[0054] Specifically, the length direction of the first connecting plate 41 and the second connecting plate 42 is along the extension direction of the crossbeam 1. This design allows the connecting device 4 to better adapt to the extension direction of the crossbeam 1, thereby ensuring a more stable connection between the crossbeam 1 and the side support frame 3 during assembly. Furthermore, the first connecting plate 41 and the second connecting plate 42 are fixedly connected by fasteners 43. This connection method is not only simple and reliable, but also effectively limits the connection angle between the crossbeam 1 and the side support frame 3, ensuring the stability of the maintenance hanger 10 during installation and use.

[0055] Optionally, the second connecting plate 42 further includes an auxiliary limiting plate 421. The auxiliary limiting plate 421 is disposed on the side of the second connecting plate 42 away from the first connecting plate 41 and is located between the fastener 43 and the side support frame 3. The extension direction of the auxiliary limiting plate 421 is perpendicular to the extension direction of the second connecting plate 42 and the extension direction of the auxiliary limiting plate 421 is along the length direction. The auxiliary limiting plate 421 is fixedly connected to the side adjacent to the end face and is used to limit and align the centerline position of the second connecting plate 42 to the centerline position of the end face when the second connecting plate 42 is fixedly connected to the end face of the side support frame 3.

[0056] The auxiliary limiting plate 421 can be implemented in various ways. For example, the auxiliary limiting plate 421 can be fixed to the second connecting plate 42 by welding or bolting. The shape of the auxiliary limiting plate 421 can be rectangular, trapezoidal, or other suitable shapes to ensure that it can effectively limit and align the centerline positions of the second connecting plate 42 and the side support frame 3. In addition, the thickness and material selection of the auxiliary limiting plate 421 can be adjusted according to the load and strength requirements in actual applications to ensure its stability and reliability in long-term use. This embodiment does not impose any special limitations on this.

[0057] Specifically, the auxiliary limiting plate 421 serves to ensure that the centerline of the second connecting plate 42 is accurately aligned with the centerline of the end face of the side support frame 3 during assembly by adding a limiting structure perpendicular to the extension direction of the second connecting plate 42 between the second connecting plate 42 and the side support frame 3. This design not only simplifies the assembly process and improves the accuracy of the assembly position, but also enhances the overall stability and precision of the maintenance hanger 10. For example, through precise machining and installation, the auxiliary limiting plate 421 ensures that the second connecting plate 42 will not shift or tilt when fixed, thereby guaranteeing the structural strength and safety of the maintenance hanger 10.

[0058] By introducing the auxiliary limiting plate 421, the alignment problem between the second connecting plate 42 and the side support frame 3 during the assembly of the maintenance hanger 10 is effectively solved. Compared with related technologies, this not only improves the accuracy and efficiency of assembly and reduces the difficulty of assembly, but also enhances the overall stability and reliability of the maintenance hanger 10. Specifically, the design of the auxiliary limiting plate 421 enables the second connecting plate 42 to automatically align when fixed, reducing the steps and time of manual adjustment, and avoiding structural displacement problems caused by inaccurate alignment.

[0059] In this embodiment, a plurality of reinforcing ribs 422 are provided on the side of the auxiliary limiting plate 421 away from the side support frame 3. The reinforcing ribs 422 are used to fix the auxiliary limiting plate 421 and the second connecting plate 42. The reinforcing ribs 422 are not uniformly distributed between the auxiliary limiting plate 421 and the second connecting plate 42, and the number of reinforcing ribs 422 at the end closer to the side support frame 3 is greater than the number of reinforcing ribs 422 at the end away from the side support frame 3. Fasteners 43 are arranged around the position of the reinforcing ribs 422.

[0060] Specifically, the reinforcing rib 422 enhances the connection strength between the auxiliary limiting plate 421 and the second connecting plate 42, ensuring that the auxiliary limiting plate 421 can be stably fixed to the second connecting plate 42 during hoisting. The non-uniform distribution design of the reinforcing rib 422 results in more reinforcing ribs 422 at the end closer to the side support frame 3, thereby providing stronger support in that area to cope with the larger stress that may be generated during hoisting. Fasteners 43 are arranged around the reinforcing rib 422 to further ensure the stability of the connection and prevent loosening or displacement during hoisting.

[0061] In some alternative embodiments, the reinforcing rib 422 can be fixed between the auxiliary limiting plate 421 and the second connecting plate 42 by welding or bolting. Welding provides a more robust connection, while bolting facilitates disassembly and maintenance when needed. Furthermore, the shape and size of the reinforcing rib 422 can be adjusted according to actual needs to ensure that it can effectively distribute the stress generated during hoisting. For example, the reinforcing rib 422 can be triangular or trapezoidal; this embodiment does not impose any special limitations on the shape and size of the reinforcing rib 422.

[0062] By setting reinforcing ribs 422 and using a non-uniform distribution method, the connection strength between the auxiliary limiting plate 421 and the second connecting plate 42 is effectively enhanced, ensuring stability and safety during the hoisting process. Compared with related technologies, this solution can better cope with the large stress that may be generated during hoisting, reduce the risk of loosening or displacement of the connection parts, thereby improving the reliability and service life of the maintenance hanger 10.

[0063] In one example embodiment of this utility model, the side support frame 3 includes a support column 31, at least two support rods 32, and a connecting rod 33. One end of the support column 31 is fixed to the end of the crossbeam 1. The support rods 32 are disposed on the support column 31 at the end away from the crossbeam 1. One end of each support rod 32 is fixed on opposite sides of the support column 31, and the other end extends outward and is on the same extending plane as the support column 31. The connecting rod 33 is disposed on the support column 31 at the end away from the crossbeam 1 and is used to rigidly connect the support column 31 and the support rods 32.

[0064] Specifically, the support column 31, as the main supporting structure of the side support frame 3, ensures the stability of the overall structure through its connection with the crossbeam 1. The support rod 32 further enhances the supporting capacity of the support column 31. By fixing the support rod 32 to the opposite sides of the support column 31, the stress can be effectively distributed, improving the load-bearing capacity of the structure. The connecting rod 33 rigidly connects the support column 31 and the support rod 32, thereby ensuring the structural rigidity and stability of the entire side support frame 3 and preventing deformation or loosening during use. The support column 31 can be a solid steel column or a hollow cylinder, depending on the weight of the bridge crane; this embodiment does not impose any special limitations. The support rod 32 can be channel steel or rectangular hollow square steel, and the connecting rod 33 can also be channel steel or rectangular hollow square steel to reduce the overall weight of the maintenance hanger 10.

[0065] In some alternative embodiments, the angle between the support rod 32 and the support column 31 is between 30° and 60°. This angle range ensures that the support rod 32 provides sufficient support while avoiding affecting the overall stability of the structure due to an excessively large or small angle. Furthermore, the arrangement of the connecting rod 33 can be adjusted according to actual needs; for example, an intermediate connecting rod 332 can be added to further enhance the rigidity of the structure.

[0066] By optimizing the structural design of the side support frame 3, the stability problem of the maintenance hanger 10 during installation and use on the bridge crane platform 00 of the tail gate tunnel in related technologies has been solved. The reasonable layout of the support columns 31, support rods 32, and connecting rods 33 ensures the stability and reliability of the maintenance hanger 10 in complex environments, while controlling the overall weight of the maintenance hanger 10, facilitating installation on the bridge crane platform 00 of the tail gate tunnel, thereby improving the efficiency and safety of maintenance work.

[0067] In this embodiment, the connecting rod 33 includes a bottom connecting rod 331 and at least one intermediate connecting rod 332. The bottom connecting rod 331 is disposed on the end of the support column 31 away from the crossbeam 1, and the end face of the support column 31 is connected to the midpoint of the bottom connecting rod 331. The ends of the support rods 32 away from the support column 31 are respectively connected to the two ends of the bottom connecting rod 331. The intermediate connecting rods 332 are connected between the support rods 32, and are disposed parallel to the bottom connecting rod 331, with their length gradually decreasing, for connecting the support rods 32 and the support column 31.

[0068] Specifically, the design of the bottom connecting rod 331 makes the connection between the support column 31 and the support rod 32 more stable. By connecting the end face of the support column 31 to the midpoint of the bottom connecting rod 331, the stress can be effectively distributed, enhancing the stability of the overall structure. The two ends of the support rod 32 are respectively connected to the two ends of the bottom connecting rod 331, further ensuring the rigid connection between the support rod 32 and the support column 31. The setting of the intermediate connecting rod 332 further enhances the connection strength between the support rods 32, and because the length of the intermediate connecting rod 332 gradually decreases, it can better adapt to different distances between the support rods 32, ensuring the tightness and uniformity of the connection.

[0069] The combined design of the bottom connecting rod 331 and the middle connecting rod 332 solves the problem of unstable connection between the support column 31 and the support rod 32, enhances the overall structural strength of the maintenance hanger 10, effectively improves the stability and safety of the maintenance hanger 10, and ensures that the structure will not become unstable or damaged due to unstable connection during hoisting operations.

[0070] Optionally, the angle between the support rod 32 and the support column 31 is between 30° and 60°. This angle range is specifically determined by analyzing the mechanical relationship between the support rod 32 and the support column 31. One end of the support rod 32 is fixed to opposite sides of the support column 31, while the other end extends outward and lies on the same extending plane as the support column 31. Therefore, the angle between the support rod 32 and the support column 31 directly affects the supporting effect of the support rod 32 on the support column 31. As an optional implementation, the angle between the support rod 32 and the support column 31 can be set to 45° to optimize the force distribution of the support rod 32 while ensuring support strength.

[0071] By limiting the angle between the support rod 32 and the support column 31 to between 30° and 60°, the supporting effect of the support rod 32 on the support column 31 can be effectively improved. If the angle between the support rod 32 and the support column 31 is too small, the supporting force of the support rod 32 on the support column 31 may be insufficient; while if the angle is too large, the force distribution of the support rod 32 may be uneven, thus affecting the stability of the support rod 32. Therefore, by limiting the angle between the support rod 32 and the support column 31 to between 30° and 60°, the force distribution of the support rod 32 can be optimized while ensuring the supporting strength, thereby improving the stability of the support rod 32. Compared with related technologies, this technical solution has higher supporting effect and stability, and can better meet the needs of practical applications.

[0072] In one exemplary embodiment of this utility model, the crossbeam 1 further includes a second support plate 12 and a connecting plate 13. The connecting plate 13 is disposed between the first support plate 11 and the second support plate 12, and the extending direction of the connecting plate 13 is perpendicular to the first support plate 11 and the second support plate 12, respectively, for connecting the first support plate 11 and the second support plate 12 and enhancing the support strength of the crossbeam 1. The crossbeam 1 also includes limiting blocks 14, which are fixedly disposed at both ends of the connecting plate 13, and the limiting blocks 14 are at least a preset safety distance from the side support frame 3, for limiting the movement range of the electric hoist 2 on the crossbeam 1.

[0073] Specifically, the design of the connecting plate 13 makes the connection between the first support plate 11 and the second support plate 12 more stable, thereby improving the overall strength of the crossbeam 1. The setting of the limiting block 14 ensures that the electric hoist 2 will not exceed the safe range during movement, avoiding safety hazards caused by excessive movement, such as preventing the electric hoist 2 from colliding with the side support frame 3 due to excessive movement distance, which could lead to instability of the maintenance hanger 10. The connecting plate 13 can be fixed between the first support plate 11 and the second support plate 12 by welding or bolting, and the limiting block 14 can be fixed to both ends of the connecting plate 13 by welding or bolting. As an optional implementation, the material of the limiting block 14 can be high-strength steel or elastic rubber block to ensure that it can withstand the impact force generated when the electric hoist 2 moves.

[0074] By adding a second support plate 12 and a connecting plate 13, the support strength of the crossbeam 1 is effectively enhanced. Simultaneously, by setting a limiting block 14, the movement range of the electric hoist 2 is restricted, thereby improving the safety and stability of the maintenance hanger 10. Compared with related technologies, this solution not only solves the problem of insufficient support strength of the crossbeam 1 but also avoids the safety hazards caused by excessive movement of the electric hoist 2, demonstrating high practicality and reliability.

[0075] In one example embodiment of this utility model, the maintenance hanger 10 further includes a center of gravity offset device 5, which is movably disposed on the side of the crossbeam 1 away from the side support frame 3. When the electric hoist 2 lifts the bridge crane, the device 5 moves in the opposite direction to the moving direction of the electric hoist 2, so that the lifting center of gravity of the maintenance hanger 10 is as close as possible to the middle position between the two side support frames 3.

[0076] Optionally, the center of gravity offset device 5 includes a moving guide rail 51 and a gravity block 52. The moving guide rail 51 is fixedly mounted on the crossbeam 1, and the gravity block 52 is slidably connected to the moving guide rail 51. When the gravity block 52 is subjected to a driving force, it slides along the moving guide rail 51 to move in the opposite direction of the moving direction of the electric hoist 2 when the electric hoist 2 is lifting the bridge machine, so that the center of gravity of the maintenance hanger 10 is as close as possible to the middle position between the two side support frames 3.

[0077] Specifically, the design of the center of gravity offset device 5 aims to solve the problem of center of gravity offset during bridge crane hoisting. By setting up the moving guide rail 51 and the gravity block 52, the gravity block 52 can slide in the opposite direction to the moving direction of the electric hoist 2 when the electric hoist 2 is hoisting the bridge crane, thereby adjusting the overall center of gravity position of the maintenance hanger 10. This can effectively avoid stability problems caused by center of gravity offset during hoisting, and ensure the safety and stability of the hoisting process.

[0078] As an optional implementation, the moving guide rail 51 can be designed as a linear or curved guide rail to accommodate beams 1 of different shapes and sizes. The gravity block 52 can be made of a high-density metal, such as lead or tungsten, to increase its weight and thus more effectively adjust the center of gravity. Furthermore, the sliding of the gravity block 52 can be achieved electrically or manually, depending on the requirements of the actual application scenario. For example, pull ropes can be installed at both ends of the gravity block 52, allowing workers to pull the ropes to drive the movement of the gravity block 52.

[0079] Optionally, the length of the gravity block 52 can be greater than or equal to half the length of the crossbeam 1, which can effectively avoid the problem of excessive center of gravity shift caused by large-scale movement of the gravity block 52. The length of the gravity block 52 can be greater than or equal to half the length of the crossbeam 1, which can enable the gravity block 52 to make fine adjustments to the center of gravity position, further ensuring the stability and reliability of the maintenance hanger 10.

[0080] By introducing the center-of-gravity offset device 5, the problem of center-of-gravity shift during bridge crane hoisting is effectively solved. Compared with existing technologies, this solution not only improves the stability of the hoisting process but also enhances the overall safety of the maintenance gantry 10. By adjusting the center-of-gravity position, potential tilting or swaying during hoisting can be avoided, ensuring the smooth progress of the hoisting operation.

[0081] It should be understood that this invention is not limited to the detailed structure and arrangement of the components proposed in this invention. This invention can have other embodiments and can be implemented and performed in various ways. The foregoing variations and modifications fall within the scope of this invention. It should be understood that the invention disclosed and defined herein extends to all alternative combinations of two or more individual features mentioned or apparent in the text and / or drawings. All these different combinations constitute multiple alternative aspects of this invention. The embodiments described herein illustrate the best known mode for implementing this invention and will enable those skilled in the art to utilize this invention.

Claims

1. A maintenance hanger for a tailgate tunnel crane, characterized in that, The maintenance hanger is fixedly installed on the tailgate tunnel crane platform, and the maintenance hanger includes: The crossbeam includes the first support plate; An electric hoist, including a moving component, wherein the electric hoist is attached to the first support plate via the moving component; Two side support frames, one end of each side support frame is fixed to both ends of the crossbeam, and the end of each side support frame away from the crossbeam is fixed to the tailgate tunnel crane platform; A connecting device is disposed between the crossbeam and the side support frame, used to fix the crossbeam to the side support frame and limit the connection angle between the crossbeam and the side support frame when assembling the maintenance hanger.

2. The maintenance hanger according to claim 1, characterized in that, The connecting device includes a first connecting plate and a second connecting plate; The first connecting plate is disposed at both ends of the crossbeam, and one side is fixedly connected to the side of the first support plate. One side of the second connecting plate is fixedly connected to the end face of the side support frame near the crossbeam. The first connecting plate and the second connecting plate have a length direction, and the length direction is along the extension direction of the crossbeam. The first connecting plate and the second connecting plate are fixedly connected by fasteners provided on the side along the length direction, thereby enabling the crossbeam to be fixedly connected to the side support frame and limiting the connection angle between the crossbeam and the side support frame when assembling the maintenance hanger.

3. The maintenance hanger according to claim 2, characterized in that, The second connecting plate further includes an auxiliary limiting plate, which is disposed on the side of the second connecting plate away from the first connecting plate and between the fastener and the side support frame. The extension direction of the auxiliary limiting plate is perpendicular to the extension direction of the second connecting plate and is along the length direction. The auxiliary limiting plate is fixedly connected to the side adjacent to the end face, and is used to limit and align the centerline position of the second connecting plate to the centerline position of the end face when the second connecting plate is fixedly connected to the end face of the side support frame.

4. The maintenance hanger according to claim 3, characterized in that, The auxiliary limiting plate has multiple reinforcing ribs on the side away from the side support frame, and the reinforcing ribs are used to fix the auxiliary limiting plate and the second connecting plate; and The reinforcing ribs are not uniformly distributed between the auxiliary limiting plate and the second connecting plate, and the number of the reinforcing ribs at the end closer to the side support frame is greater than the number of the reinforcing ribs at the end farther away from the side support frame. The fasteners are arranged around the positions of the reinforcing ribs.

5. The maintenance hanger according to claim 1, characterized in that, The side support frame includes: The support column is fixed at one end to the end of the crossbeam; At least two support rods are provided on the support column at one end away from the crossbeam. One end of each support rod is fixed on opposite sides of the support column, and the other end extends outward and is on the same extension plane as the support column. A connecting rod is disposed on one end of the support column away from the crossbeam, for rigidly connecting the support column and the support rod.

6. The maintenance hanger according to claim 5, characterized in that, The connecting rod includes: A bottom connecting rod is provided on the support column at one end away from the crossbeam, and the end face of the support column is connected to the midpoint of the bottom connecting rod. The end of the support rod away from the support column is connected to both ends of the bottom connecting rod. At least one intermediate connecting rod is provided, which is connected between the support rods. The intermediate connecting rod is arranged parallel to the bottom connecting rod and its length gradually decreases, and is used to connect the support rod and the support column.

7. The maintenance hanger according to claim 5, characterized in that, The angle between the support rod and the support column is between 30° and 60°.

8. The maintenance hanger according to claim 1, characterized in that, The crossbeam also includes a second support plate and a connecting plate. The connecting plate is disposed between the first support plate and the second support plate, and the extension direction of the connecting plate is perpendicular to the first support plate and the second support plate, respectively, for connecting the first support plate and the second support plate and enhancing the support strength of the crossbeam. The crossbeam also includes limiting blocks, which are fixedly installed at both ends of the connecting plate, and the limiting blocks are at least a preset safe distance from the side support frame, in order to limit the movement range of the electric hoist on the crossbeam.

9. The maintenance hanger according to claim 1, characterized in that, The maintenance hanger also includes a center of gravity offset device, which is movably disposed on the side of the crossbeam away from the side support frame. When the electric hoist is lifting the bridge crane, the device moves in the opposite direction to the movement direction of the electric hoist, so that the center of gravity of the maintenance hanger is as close as possible to the middle position between the two side support frames.

10. The maintenance hanger according to claim 9, characterized in that, The center of gravity offset device includes a moving guide rail and a gravity block. The moving guide rail is fixedly mounted on the crossbeam, and the gravity block is slidably connected to the moving guide rail. When the gravity block is driven, it slides along the moving guide rail, so that when the electric hoist is hoisting the bridge machine, it can move in the opposite direction to the moving direction of the electric hoist, so that the hoisting center of gravity of the maintenance frame is as close as possible to the middle position between the two side support frames.

Images