A crane beam structure with high-strength thin-walled box section

Abstract

The application relates to the technical field of crane beams, and discloses a high-strength thin-wall box-section crane beam structure, which comprises a beam main body assembly, wave plates are fixedly welded on the inner sides of two beam frames, two connecting plates are fixedly welded on the outer sides of the two beam frames, mounting plates are fixedly welded on the outer sides of the two connecting plates, a driving walking assembly is arranged, driving wheels are rotationally connected to the outer sides of two slide rails, and a bidirectional motor is fixedly installed between the two driving wheels. The box-section main body structure is formed by welding two parallel beam frames and a continuous wave plate, the wave effect of the wave plate greatly improves the bending and torsional stiffness of the beam, the inside of the beam is a hollow structure, the self weight of the beam is obviously reduced under the premise that the structural strength and stiffness meet the use requirements, material consumption is reduced, and manufacturing cost is reduced; the box-section structure is uniformly stressed, is not prone to deformation, and has a long service life.

Description

Technical Field

[0001] This invention relates to the field of crane beam technology, specifically to a high-strength, thin-walled, box-section crane beam structure. Background Technology

[0002] The crane beam is the core load-bearing component of bridge and gantry cranes, and its structural strength, rigidity, and self-weight directly affect the overall performance and operating costs of the crane. With the rapid development of industrial production, increasingly higher requirements are being placed on the lifting capacity, span, and operating speed of cranes, and traditional crane beam structures can no longer meet the needs of modern production.

[0003] Existing crane beam structures suffer from several significant technical defects: most employ ordinary solid box girder structures, resulting in high weight and material consumption, increasing the overall weight and manufacturing cost of the crane, while also placing higher demands on the crane's frame and traveling mechanism; some use I-beam structures, which, although lighter in weight, lack structural strength and rigidity, making them prone to bending deformation under heavy loads, affecting the crane's operating accuracy and safety. Most beam traveling mechanisms use single-wheel drive or single-side drive, resulting in poor traveling stability and a tendency to deviate and jam; furthermore, they lack effective protective measures, making the motor and drive wheels susceptible to dust and rain corrosion, leading to high failure rates and short service lives.

[0004] Most crossbeams have separate winding and traveling mechanisms, which are complex in structure, inconvenient to install and maintain, and occupy a lot of space. In addition, existing crossbeams have poor versatility, and a set of crossbeams can only be adapted to cranes of specific specifications, resulting in high operating costs.

[0005] Therefore, developing a crane beam structure with a high-strength, thin-walled box section that is lightweight, high-strength, stable in motion, provides good protection, and is easy to maintain is a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a crane beam structure with a high-strength, thin-walled box-shaped cross section, thereby solving the problems mentioned in the background section.

[0007] To achieve the above objectives, the present invention provides the following technical solution: A high-strength, thin-walled box-section crane beam structure, comprising: The main body of the crossbeam has corrugated plates fixedly welded to the inner sides of the two crossbeam frames, two connecting plates fixedly welded to the outer sides of the two crossbeam frames, mounting plates fixedly welded to the outer sides of the two connecting plates, slide rails fixedly welded to the outer sides of the two crossbeam frames, and limit plates fixedly welded to both ends of the two slide rails. The driving walking assembly has two drive wheels rotatably connected to the outer sides of the two slide rails, a bidirectional motor is fixedly installed between the two drive wheels, and a fixing plate is fixedly installed on the outer side of the bidirectional motor. The protective guide assembly has a shielding frame fixedly installed on the outer side of the fixed plate, and multiple heat dissipation holes are opened on the outer side of the shielding frame. A ring frame is fixedly welded to the bottom of the shielding frame. The winding assembly has a baffle plate fixedly welded to the bottom end of the shielding frame, a winding motor fixedly installed on the outside of the baffle plate, and winding reels fixedly installed on both output ends of the winding motor. The system also includes a sliding limit assembly. Both sides of the shielding frame are movably equipped with sealing plates. Multiple guide rods are fixedly installed on the outer sides of the two sealing plates. Sliding frames are fixedly welded to the adjacent sides of the two crossbeam frames. The inner sides of the two sliding frames are slidably connected to the outer sides of the multiple guide rods.

[0008] Furthermore, the two beam frames are arranged parallel to each other, the corrugated plate extends continuously along the length of the beam frame, and the two side edges of the corrugated plate are respectively fixedly welded perpendicularly to the inner surface of the two beam frames; the two connecting plates are arranged at intervals along the length of the beam frame, and the plate surface of the mounting plate is perpendicular to the plate surface of the connecting plate.

[0009] Furthermore, the two slide rails are symmetrically arranged along the central axis of the two crossbeam frames, and the top surface of the slide rails is flush with the top surface of the crossbeam frames; an annular groove is provided on the outer side of the drive wheel, and the inner wall of the annular groove is clearance-fitted with the outer surface of the slide rail, so that the drive wheel can roll along the length direction of the slide rail.

[0010] Furthermore, the two output ends of the bidirectional motor are respectively fixedly connected to the central shafts of the two drive wheels, and the outer side of the housing of the bidirectional motor is fixedly connected to the inner surface of the fixing plate; the outer surface of the fixing plate is fixedly connected to the inner surface of the shielding frame, and the shielding frame is a rectangular cavity structure with an open bottom.

[0011] Furthermore, the plurality of heat dissipation holes are evenly spaced along the length and height of the shielding frame, and the heat dissipation holes are circular through holes; the annular frame extends continuously along the bottom opening edge of the shielding frame, and the top surface of the annular frame is vertically and fixedly welded to the bottom surface of the shielding frame.

[0012] Furthermore, the surface of the baffle is perpendicular to the bottom surface of the shielding frame, and the winding motor is fixedly installed at the center of the outer side of the baffle; the two winding reels are symmetrically arranged along the central axis of the winding motor, and the central axis of the winding reel is coaxially and fixedly connected to the output end of the winding motor.

[0013] Furthermore, the two sealing plates are movably fitted to the two end faces of the shielding frame, and at least two guide rods are fixedly installed on the outer surface of each sealing plate; the axis of the guide rod is parallel to the length direction of the crossbeam frame, and a sliding groove extending along the length direction is opened inside the sliding frame, and the outer surface of the guide rod is clearance-fitted with the inner wall of the sliding groove.

[0014] Furthermore, the surface of the limiting plate is perpendicularly and fixedly welded to the end face of the slide rail, and the height of the limiting plate is greater than the diameter of the drive wheel; the cross section of the wave plate is a continuous sine wave, and the wave plate and the two crossbeam frames form multiple continuous box-shaped cavity structures.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. This high-strength, thin-walled box-section crane beam structure is lightweight, high-strength, and highly rigid. It utilizes two parallel beam frames welded to continuous corrugated plates to form the main box-section structure. The corrugated effect of the plates significantly improves the beam's bending and torsional stiffness. Simultaneously, the beam's hollow interior significantly reduces its weight, material consumption, and manufacturing costs while ensuring structural strength and stiffness meet usage requirements. The box-section structure also exhibits uniform stress distribution, is less prone to deformation, and has a long service life.

[0016] 2. The crane's crossbeam structure, featuring a high-strength, thin-walled box-section, incorporates a dual-wheel synchronous drive and a multi-bar guide structure, ensuring smooth movement and accurate positioning. A bidirectional motor simultaneously drives both drive wheels to rotate synchronously, guaranteeing consistent travel speeds on both sides and preventing deviation and jamming caused by asynchronous drive wheels. Combined with the multi-bar sliding guide structure of the guide rods and sliding frame, it provides additional support and guidance for the movement of the shielding frame, further improving travel stability and positioning accuracy. This effectively reduces vibration and noise during operation, enhancing operational efficiency and safety.

[0017] 3. This high-strength, thin-walled box-section crane beam structure features an integrated protection and winding structure, offering high functional integration and excellent protection. It integrates the drive mechanism, winding mechanism, and protective structure into a compact unit with a small footprint. The shielding frame effectively protects internal components such as the motor and drive wheels from external environmental corrosion, extending their service life. The design of the heat dissipation holes and ring frame addresses both heat dissipation and waterproofing requirements, ensuring reliable motor operation in harsh environments. The winding mechanism moves synchronously with the traveling mechanism, eliminating the need for additional guiding devices and simplifying the overall structure.

[0018] 4. This high-strength, thin-walled box-section crane beam structure features a modular design, facilitating installation and maintenance, and offering strong versatility. The overall modular design allows for independent molding of each component, simplifying connections and facilitating installation and disassembly. Wear parts such as drive wheels, winding reels, and wire ropes are easily replaceable, resulting in low maintenance costs. The main beam structure can be adjusted to accommodate different lifting capacities and span requirements, adapting to various crane specifications and demonstrating strong versatility. The mounting plate adopts a standard design, allowing direct connection to various crane frames without the need for large-scale modifications. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of the structure of the present invention.

[0020] Figure 2 This is a bottom view of the structure of the present invention.

[0021] Figure 3 This is a three-dimensional schematic diagram of the crossbeam and related structures of the present invention.

[0022] Figure 4 This is a top view of the crossbeam of the present invention.

[0023] Figure 5 This is a three-dimensional schematic diagram of the driving structure of the present invention.

[0024] Figure 6 This is a bottom view of the driving structure of the present invention.

[0025] Figure 7 This is a side view of the driving structure of the present invention.

[0026] In the diagram: 1. Crossbeam frame; 2. Corrugated plate; 3. Connecting plate; 4. Mounting plate; 5. Slide rail; 6. Limiting plate; 7. Drive wheel; 8. Bidirectional motor; 9. Fixing plate; 10. Covering frame; 11. Heat dissipation hole; 12. Circular frame; 13. Baffle; 14. Rewinding motor; 15. Rewinding reel; 16. Sealing plate; 17. Guide rod; 18. Slide frame. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example

[0028] Please refer to the following: Figure 1-7 , A high-strength, thin-walled box-section crane beam structure, comprising: The main component of the crossbeam has two corrugated plates 2 fixedly welded to the inner sides of the two crossbeam frames 1, two connecting plates 3 fixedly welded to the outer sides of the two crossbeam frames 1, mounting plates 4 fixedly welded to the outer sides of the two connecting plates 3, slide rails 5 fixedly welded to the outer sides of the two crossbeam frames 1, and limit plates 6 fixedly welded to both ends of the two slide rails 5. The drive walking assembly has two slide rails 5 with drive wheels 7 rotatably connected to their outer sides. A bidirectional motor 8 is fixedly installed between the two drive wheels 7, and a fixing plate 9 is fixedly installed on the outer side of the bidirectional motor 8. The protective guide assembly has a shielding frame 10 fixedly installed on the outside of the fixing plate 9. Multiple heat dissipation holes 11 are opened on the outside of the shielding frame 10, and an annular frame 12 is fixedly welded to the bottom of the shielding frame 10. The winding assembly has a baffle 13 fixedly welded to the bottom of the shielding frame 10, a winding motor 14 fixedly installed on the outside of the baffle 13, and winding reels 15 fixedly installed on both sides of the output end of the winding motor 14. And a sliding limit assembly, with sealing plates 16 movably installed on both sides of the shielding frame 10, and multiple guide rods 17 fixedly installed on the outer side of the two sealing plates 16, and sliding frames 18 fixedly welded on the side of the two crossbeam frames 1 that are close to each other, with the inner side of the two sliding frames 18 slidably connected to the outer side of the multiple guide rods 17. Specifically, the main components of the crossbeam are as follows: two parallel crossbeam frames 1 are rigidly welded together with a corrugated plate 2 to form the main load-bearing structure of the crossbeam; the outer surfaces of the two crossbeam frames 1 are rigidly welded together with two connecting plates 3 to form a rigid fit without relative displacement; the outer surfaces of the two connecting plates 3 are rigidly welded together with a mounting plate 4 to form a rigid fit without relative displacement, and the mounting plate 4 is used to fix the entire crossbeam to the crane frame; the outer upper surfaces of the two crossbeam frames 1 are rigidly welded together with slide rails 5 to form a rigid fit without relative displacement; the two end faces of the two slide rails 5 are rigidly welded together with limiting plates 6 to limit the travel of the drive wheels 7. Drive walking assembly: The outer surfaces of the two slide rails 5 respectively form a rotational engagement with the two drive wheels 7, and the drive wheels 7 can roll along the length direction of the slide rails 5; The central shafts of the two drive wheels 7 respectively form a rigid fixed engagement with the two output ends of the bidirectional motor 8 without relative displacement, and the bidirectional motor 8 can simultaneously drive the two drive wheels 7 to rotate synchronously; The outer side of the housing of the bidirectional motor 8 forms a rigid fixed engagement with the fixing plate 9 without relative displacement, and the fixing plate 9 provides support and mounting foundation for the bidirectional motor 8; Protective guide assembly: The outer surface of the fixing plate 9 and the inner surface of the shielding frame 10 form a rigid fixed fit without relative displacement, and the shielding frame 10 provides protection for the internal electrical components; the outer surface of the shielding frame 10 is provided with a plurality of through heat dissipation holes 11, which can realize the air circulation between the inside and outside of the shielding frame 10; the bottom opening edge of the shielding frame 10 and the annular frame 12 form a rigid welded fit without relative displacement, and the annular frame 12 extends continuously along the opening edge; The winding assembly: the bottom surface of the shielding frame 10 and the baffle 13 form a rigid welded fit without relative displacement, and the plate surface of the baffle 13 is perpendicular to the bottom surface of the shielding frame 10; the outer surface of the baffle 13 and the housing of the winding motor 14 form a rigid fixed fit without relative displacement; the two output ends of the winding motor 14 form a rigid fixed fit with the central axis of the two winding reels 15 respectively, and the winding motor 14 can drive the two winding reels 15 to rotate synchronously; Sliding limiting assembly: The two end faces of the shielding frame 10 are respectively in a movable fit with the two sealing plates 16, and the sealing plates 16 can move relative to the shielding frame 10 along the length of the crossbeam; the outer surface of each sealing plate 16 is in a rigid fixed fit with multiple guide rods 17 without relative displacement, and the guide rods 17 can move synchronously with the sealing plates 16; the inner surfaces of the two crossbeam frames 1 that are close to each other are respectively in a rigid welded fit with the sliding frame 18 without relative displacement; the inner groove of the sliding frame 18 is in a clearance fit with the outer surface of the guide rod 17, and the guide rod 17 can make linear reciprocating motion along the length of the groove; In the embodiment: two crossbeam frames 1 are arranged parallel to each other, and the corrugated plate 2 extends continuously along the length direction of the crossbeam frame 1. The two side edges of the corrugated plate 2 are respectively fixedly welded perpendicularly to the inner surface of the two crossbeam frames 1; two connecting plates 3 are arranged at intervals along the length direction of the crossbeam frame 1, and the plate surface of the mounting plate 4 is perpendicular to the plate surface of the connecting plate 3. Specifically, the two crossbeam frames 1 are arranged parallel to each other to ensure that the crossbeams are subjected to uniform stress. The corrugated plate 2 extends continuously along the length of the crossbeam frame 1, and its two sides are welded perpendicularly to the inner surfaces of the two crossbeam frames 1 to form a continuous support structure. The two connecting plates 3 are arranged at intervals along the length of the crossbeam frame 1 to evenly transfer the load of the crossbeam to the crane frame. The surface of the mounting plate 4 is perpendicular to the surface of the connecting plate 3, which facilitates fixing the crossbeam to the frame with bolts. In the embodiment: two slide rails 5 are symmetrically arranged along the central axis of two crossbeam frames 1, and the top surface of the slide rail 5 is flush with the top surface of the crossbeam frame 1; an annular groove is provided on the outer side of the drive wheel 7, and the inner wall of the annular groove is clearance-fitted with the outer surface of the slide rail 5, so that the drive wheel 7 can roll along the length direction of the slide rail 5. Specifically, the two slide rails 5 are symmetrically arranged along the central axis of the two crossbeam frames 1 to ensure that the drive wheel 7 is balanced when it moves; the top surface of the slide rail 5 is flush with the top surface of the crossbeam frame 1 to avoid steps affecting the rolling of the drive wheel 7; an annular groove is provided on the outer side of the drive wheel 7, and the inner wall of the groove forms a precise clearance fit with the outer surface of the slide rail 5. This fit restricts all displacement of the drive wheel 7 in the direction perpendicular to the length of the slide rail 5, and only allows the drive wheel 7 to roll along the length of the slide rail 5. In the embodiment: the two output ends of the bidirectional motor 8 are fixedly connected to the central shafts of the two drive wheels 7 respectively; the outer side of the housing of the bidirectional motor 8 is fixedly connected to the inner surface of the fixing plate 9; the outer surface of the fixing plate 9 is fixedly connected to the inner surface of the shielding frame 10; the shielding frame 10 is a rectangular cavity structure with an open bottom. Specifically, the two output ends of the bidirectional motor 8 are coaxially fixedly connected to the central shafts of the two drive wheels 7, ensuring that the two drive wheels 7 rotate synchronously; the outer side of the housing of the bidirectional motor 8 is tightly fitted and fixed to the inner surface of the fixing plate 9 to prevent the motor from shaking during operation; the outer surface of the fixing plate 9 is fixedly connected to the inner surface of the shielding frame 10, completely accommodating the bidirectional motor 8 inside the shielding frame 10; the shielding frame 10 is a rectangular cavity structure with an open bottom, which can cover the upper and side parts of the drive wheels 7 and the motor. In the embodiment: a plurality of heat dissipation holes 11 are evenly spaced along the length and height of the shielding frame 10, and the heat dissipation holes 11 are circular through holes; the annular frame 12 extends continuously along the bottom opening edge of the shielding frame 10, and the top surface of the annular frame 12 is vertically and fixedly welded to the bottom surface of the shielding frame 10. Specifically, multiple heat dissipation holes 11 are arranged in a matrix at uniform intervals along the length and height of the shielding frame 10 to ensure that heat can be dissipated from all parts inside the shielding frame 10; the heat dissipation holes 11 are circular through holes, which are simple in structure and not easy to accumulate dust; the annular frame 12 extends continuously along the bottom opening edge of the shielding frame 10, and its top surface is welded perpendicularly to the bottom surface of the shielding frame 10 to form a downward protruding baffle structure. In the embodiment: the surface of the baffle 13 is perpendicular to the bottom surface of the shielding frame 10, and the winding motor 14 is fixedly installed at the center of the outer side of the baffle 13; the two winding reels 15 are symmetrically arranged along the central axis of the winding motor 14, and the central axis of the winding reel 15 is coaxially and fixedly connected to the output end of the winding motor 14. Specifically, the surface of the baffle 13 is perpendicular to the bottom surface of the shielding frame 10, providing a stable mounting plane for the winding motor 14; the winding motor 14 is fixedly installed at the center of the outer side of the baffle 13 to ensure that the two winding reels 15 are balanced by force; the two winding reels 15 are symmetrically arranged along the central axis of the winding motor 14, and their central axis is coaxially fixedly connected to the output end of the winding motor 14, so that the winding and unwinding actions can be performed synchronously. In the embodiment: two sealing plates 16 are movably fitted to the two end faces of the shielding frame 10 respectively, and at least two guide rods 17 are fixedly installed on the outer surface of each sealing plate 16; the axis of the guide rod 17 is parallel to the length direction of the crossbeam frame 1, and a sliding groove extending along the length direction is opened inside the sliding frame 18, and the outer surface of the guide rod 17 is clearance-fitted with the inner wall of the sliding groove. Specifically, the two sealing plates 16 are movably fitted to the two end faces of the shielding frame 10, and can move synchronously with the shielding frame 10. At the same time, they can slide relative to the shielding frame 10 along the length direction of the crossbeam. At least two parallel guide rods 17 are fixedly installed on the outer surface of each sealing plate 16 to ensure the stability of the sealing plate 16 when it moves. The axis of the guide rod 17 is parallel to the length direction of the crossbeam frame 1. The interior of the sliding frame 18 is provided with a continuous sliding groove extending along the length direction. The outer surface of the guide rod 17 and the inner wall of the sliding groove form a precise clearance fit. This fit restricts all displacement of the guide rod 17 in the direction perpendicular to the length of the sliding groove. In the embodiment: the plate surface of the limiting plate 6 is perpendicularly fixedly welded to the end face of the slide rail 5, and the height of the limiting plate 6 is greater than the diameter of the drive wheel 7; the cross section of the wave plate 2 is a continuous sine wave, and the wave plate 2 and the two crossbeam frames 1 enclose a plurality of continuous box-shaped cavity structures. Specifically, the plate surface of the limiting plate 6 is welded perpendicularly to the end face of the slide rail 5, and its height is greater than the diameter of the drive wheel 7, which can completely block the movement of the drive wheel 7; the cross section of the wave plate 2 is a continuous sine wave, and its crests and troughs are welded to the inner surfaces of the two crossbeam frames 1 respectively; the wave plate 2 and the two crossbeam frames 1 together form multiple continuous closed box-shaped cavity structures, which constitute the main load-bearing body of the crossbeam; Working principle: Step 1: Secure the entire crossbeam structure to the crane frame using the mounting plates 4 at both ends of the crossbeam. Tighten the connecting bolts to ensure the crossbeam is firmly installed and its levelness meets requirements. Check the welded joints between the corrugated plate 2 and the crossbeam frame 1 for firmness, without cracks or detachment. Check the surface of the slide rail 5 for smoothness and flatness, without deformation or damage. Check the fit between the drive wheel 7 and the slide rail 5 for good performance and smooth rolling. Check that all connecting bolts are tightened and not loose. After confirming that all components are in good condition, the machine is ready for use. Step 2: Start the bidirectional motor 8. The two output ends of the bidirectional motor 8 rotate synchronously, driving the drive wheels 7 on both sides to roll along the corresponding slide rails 5. The annular groove on the outer side of the drive wheel 7 fits tightly with the outer surface of the slide rail 5 to prevent the drive wheel 7 from deviating. When the drive wheel 7 rolls, it drives the shielding frame 10 to move laterally along the length of the crossbeam through the fixing plate 9. When the shielding frame 10 moves, it drives the sealing plates 16 on both sides to move synchronously. The guide rod 17 on the outer side of the sealing plate 16 slides along the slide groove inside the slide frame 18. The precise fit between the guide rod 17 and the slide groove provides auxiliary guidance for the movement of the shielding frame 10, ensuring that the movement is smooth and without shaking, and avoiding tilting or jamming. Step 3: As the shielding frame 10 moves, it drives the baffle 13 and the winding motor 14 to move synchronously. Based on the lifting or lowering requirements, the winding motor 14 is started. The two output ends of the winding motor 14 drive the winding reels 15 on both sides to rotate synchronously, performing winding or unwinding operations on the wire rope. When the winding reel 15 rotates, the wire rope is neatly wound onto or released from the winding reel 15, realizing the lifting and lowering of the load. The speed of the winding motor 14 can be adjusted according to the operational requirements to ensure a smooth lifting and lowering process. Step 4: During device operation, the shielding frame 10 completely covers the core components such as the bidirectional motor 8 and drive wheel 7, preventing dust, rainwater, and debris from entering the components and protecting the electrical and mechanical components from damage. Multiple heat dissipation holes 11 on the outside of the shielding frame 10 allow air circulation between the inside and outside. The heat generated by the bidirectional motor 8 during operation is dissipated into the outside air through the heat dissipation holes 11, preventing the motor from being damaged due to overheating. The annular frame 12 at the bottom of the shielding frame 10 forms a downward-facing baffle, which can effectively prevent rainwater from entering the interior of the shielding frame 10 from the bottom opening, further improving the waterproof performance. Step 5: When the drive wheel 7 moves to both ends of the slide rail 5, the side of the drive wheel 7 contacts the surface of the limiting plate 6. The limiting plate 6 blocks the drive wheel 7 from moving further, preventing the drive wheel 7 from disengaging from the slide rail 5 and avoiding safety accidents. The limiting plate 6 is made of high-strength steel plate, which can withstand the impact load of the drive wheel 7 and ensure reliable limiting. Step Six: Regularly check the firmness of the welded parts and promptly repair any cracked welds; regularly clean the dust and debris from the surface of the slide rail 5, apply grease to ensure smooth rolling of the drive wheel 7; regularly check the wear of the drive wheel 7 and replace it promptly if the wear is severe; regularly clean the accumulated dust inside the heat dissipation holes 11 to ensure heat dissipation; regularly check the condition of the winding reel 15 and the wire rope, and promptly replace any damaged winding reel 15 and worn wire rope; regularly tighten all connecting bolts to prevent loosening.

[0029] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A crane beam structure with high strength and thin-walled box-shaped cross-section, characterized in that, include: The main body of the crossbeam has two corrugated plates (2) fixedly welded to the inner side of the two crossbeam frames (1), two connecting plates (3) fixedly welded to the outer side of the two crossbeam frames (1), two mounting plates (4) fixedly welded to the outer side of the two connecting plates (3), two slide rails (5) fixedly welded to the outer side of the two crossbeam frames (1), and two limit plates (6) fixedly welded to both ends of the two slide rails (5). The driving walking assembly has a drive wheel (7) rotatably connected to the outer side of each of the two slide rails (5), and a bidirectional motor (8) is fixedly installed between the two drive wheels (7). A fixing plate (9) is fixedly installed on the outer side of the bidirectional motor (8). The protective guide assembly has a shielding frame (10) fixedly installed on the outside of the fixed plate (9), and a plurality of heat dissipation holes (11) are opened on the outside of the shielding frame (10). A ring frame (12) is fixedly welded to the bottom of the shielding frame (10). The winding assembly has a baffle (13) fixedly welded to the bottom end of the shielding frame (10), a winding motor (14) fixedly installed on the outside of the baffle (13), and winding reels (15) fixedly installed on both sides of the output end of the winding motor (14). And a sliding limit assembly, both sides of the shielding frame (10) are movably installed with sealing plates (16), and multiple guide rods (17) are fixedly installed on the outer side of the two sealing plates (16). Sliding frames (18) are fixedly welded on the side of the two beam frames (1) that are close to each other, and the inner side of the two sliding frames (18) is slidably connected to the outer side of the multiple guide rods (17).

2. The crane beam structure with high strength thin-walled box section according to claim 1, characterized in that, The two beam frames (1) are arranged parallel to each other, the wave plate (2) extends continuously along the length direction of the beam frame (1), and the two sides of the wave plate (2) are respectively fixedly welded to the inner surfaces of the two beam frames (1); the two connecting plates (3) are arranged at intervals along the length direction of the beam frame (1), and the plate surface of the mounting plate (4) is perpendicular to the plate surface of the connecting plate (3).

3. The crane beam structure with high strength thin-walled box section according to claim 1, characterized in that, The two slide rails (5) are arranged symmetrically along the central axis of the two crossbeam frames (1), and the top surface of the slide rail (5) is flush with the top surface of the crossbeam frame (1); the outer side of the drive wheel (7) is provided with an annular groove, and the inner wall of the annular groove is in clearance fit with the outer surface of the slide rail (5), and the drive wheel (7) can roll along the length direction of the slide rail (5).

4. The crane beam structure with high strength thin-walled box section according to claim 1, characterized in that, The two output ends of the bidirectional motor (8) are fixedly connected to the central shafts of the two drive wheels (7) respectively. The outer side of the housing of the bidirectional motor (8) is fixedly connected to the inner surface of the fixing plate (9). The outer surface of the fixing plate (9) is fixedly connected to the inner surface of the shielding frame (10). The shielding frame (10) is a rectangular cavity structure with an open bottom.

5. A crane beam structure with high strength and thin-walled box section according to claim 1, characterized in that, Multiple heat dissipation holes (11) are evenly spaced along the length and height of the shielding frame (10), and the heat dissipation holes (11) are circular through holes; the annular frame (12) extends continuously along the bottom opening edge of the shielding frame (10), and the top surface of the annular frame (12) is vertically fixedly welded to the bottom surface of the shielding frame (10).

6. The crane beam structure with high strength thin-walled box section according to claim 1, characterized in that, The surface of the baffle (13) is perpendicular to the bottom surface of the shielding frame (10), and the winding motor (14) is fixedly installed at the center of the outer side of the baffle (13); the two winding reels (15) are symmetrically arranged along the central axis of the winding motor (14), and the central axis of the winding reel (15) is coaxially and fixedly connected to the output end of the winding motor (14).

7. A crane beam structure with high strength and thin-walled box section according to claim 1, characterized in that, The two sealing plates (16) are respectively movably fitted to the two end faces of the shielding frame (10), and at least two guide rods (17) are fixedly installed on the outer surface of each sealing plate (16); the axis of the guide rod (17) is parallel to the length direction of the crossbeam frame (1), and the sliding frame (18) has a sliding groove extending along the length direction inside, and the outer surface of the guide rod (17) is clearance-fitted with the inner wall of the sliding groove.

8. A crane beam structure with high strength and thin-walled box section according to claim 1, characterized in that, The plate surface of the limiting plate (6) is perpendicularly fixedly welded to the end face of the slide rail (5), and the height of the limiting plate (6) is greater than the diameter of the drive wheel (7); the cross section of the wave plate (2) is a continuous sine wave, and the wave plate (2) and the two beam frames (1) form a plurality of continuous box-shaped cavity structures.

Images