Cable guide structure for head cable reel cable of cantilever crane
By using a cable guide structure of welding bracket, follow-up cable rod and follow-up cable frame on the crane boom, combined with the use of nylon rollers, the problem of poor stability and safety hazards of cables during lifting is solved, and the cable is more stable and safe to operate.
Patent Information
- Application Number
- CN202421501254.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-28
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2034-06-28
AI Technical Summary
During the lifting process, the cable is susceptible to tension and sway force, resulting in poor stability, prone to large sway and collision with the crane boom, causing the risk of the cable being cut and posed safety hazards.
The cable structure including a welded bracket, a follow-up cable rod and a follow-up cable frame is adopted to keep the cable vertical during the rotation of the crane boom, and the cable passage direction is restricted through the nylon roller to reduce the risk of ecstasy and cutting.
It effectively reduces the eccentricity of the cable, improves the stability of the cable, reduces the risk of the cable being cut, and improves the safety during crane operation.
Smart Images
Figure CN222684125U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of crane parts, and in particular to a cable guide structure for a cable reel at the head of a boom-type crane. Background Art
[0002] Mobile harbor crane, referred to as MHC, is a single-arm type crane, which is mainly used in ports and docks for loading and unloading of general cargo, containers and bulk cargo. When a single-arm type crane is lifting a container, considering the need to power the container spreader, it is necessary to arrange the cable reel at the head of the boom, and the cable is discharged from the head to connect the hook.
[0003] In the prior art, the cable reel is usually connected to the boom head with a bracket bolt. When the boom changes from the minimum amplitude to the maximum amplitude, the position of the cable reel will change in real time with the change of the boom's amplitude. At the same time, the height of the hook affects the number of turns of the reel cable, so that the cable outlet position also changes in real time. When the boom is at the maximum amplitude, the hook is at the highest position, and the reel is full of cable. When the boom is at the minimum amplitude, the hook is at the lowest position, and the reel has the least cable.
[0004] With respect to the above-mentioned related technologies, the following problems exist: during the lifting process, the cable will be affected by factors such as tension and yaw force, the stability of the cable cannot be effectively guaranteed, and the cable is prone to large yaw. If the cable end collides with the crane boom during the yaw process, the cable may be cut off and the hoist cannot be powered, posing a safety hazard and needs to be improved. Utility Model Content
[0005] In order to improve the stability and safety of the cable during the lifting process, the present application provides a cable guide structure for the cable reel at the head of a boom type crane.
[0006] The present application provides a cable guide structure for a cable reel at the head of a jib crane, which adopts the following technical solution:
[0007] A cable guiding structure for a cable reel at the head of a boom type crane comprises a welding bracket, a follower cable guide rod and a follower cable guide rack, wherein the welding bracket is fixedly connected to the boom, one end of the follower cable guide rod is rotatably connected to the welding bracket, the follower cable guide rack is rotatably connected to the end of the follower cable guide rod away from the welding bracket, and the follower cable guide rack is provided with a passage groove for the cable to pass through.
[0008] By adopting the above technical scheme, under the action of the gravity of the cable guide device itself, no matter how the crane boom rotates, the follow-up cable guide rod will rotate relative to the welding bracket and be in a vertical state. One end of the cable passes through the passage groove, and under the action of the gravity of the cable, the follow-up cable guide frame will also rotate relative to the follow-up cable guide rod. Therefore, through the structure of the welding bracket, the follow-up cable guide rod and the follow-up cable guide frame, the end of the cable close to the boom can be kept in a vertical state, which can effectively reduce the cable's swing amplitude, make it easier to stabilize the cable above the hook, reduce the risk of the cable being cut, and improve the safety during the crane operation.
[0009] Optionally, two first nylon rollers are rotatably connected in the passage groove, and the two first nylon rollers are parallel to each other so that the cable can pass between the two first nylon rollers.
[0010] By adopting the above technical solution, the first nylon roller is provided to limit the passage direction of the cable, thereby preventing the cable from colliding with the inner wall of the passage groove, further reducing the risk of the cable being cut, and improving the safety of the cable.
[0011] Optionally, two groups of mounting plates are provided on the inner wall of the passage groove, each group of mounting plates has two mounting plates, and the second nylon roller is rotatably connected between the mounting plates in the same group. The second nylon roller is located below the first nylon roller, and the length direction of the second nylon roller is perpendicular to the length direction of the first nylon roller.
[0012] By adopting the above technical solution, setting up the second nylon roller can further limit the passage direction of the cable on the basis of the first nylon roller, and can also maintain the stability of the cable in the passage groove, reduce the cable's swing amplitude, and improve stability.
[0013] Optionally, rotating cylinders are provided at both ends of the follower cable guide frame, a first pin is provided in one of the rotating cylinders, the first pin is fixed to the welding bracket, the follower cable guide rod is rotatably connected to the welding bracket via the first pin, a second pin is provided on the side wall of the follower cable guide frame, the second pin is inserted into the rotating cylinder at the other end of the follower cable guide rod, and the follower cable guide frame is rotatably connected to the follower cable guide rod via the second pin.
[0014] By adopting the above technical solution and setting a rotating connection method for the rotating cylinder, the first pin and the second pin, the rotation smoothness of the follower cable guide rod relative to the welding bracket and the follower cable guide frame relative to the follower cable guide rod can be improved, the direct wear on the above three can be reduced, the structural strength can be protected, and the service life can be extended.
[0015] Optionally, a plurality of deep groove ball bearings are arranged in the rotating cylinder, and the first latch and the second latch are respectively connected to the inner rings of the corresponding deep groove ball bearings.
[0016] By adopting the above technical solution, the deep groove ball bearing is provided to reduce the wear of the first latch and the second latch during rotation, thereby extending the service life of the first latch and the second latch.
[0017] Optionally, a positioning hole is formed at one end of the second pin away from the follower cable guide frame, and a corresponding anti-slip plate is provided on the end wall of the rotating cylinder. The diameter of the anti-slip plate is larger than the inner diameter of the rotating cylinder. A positioning piece is provided on the anti-slip plate, and the positioning piece passes through the anti-slip plate and is fixed in the positioning hole.
[0018] By adopting the above technical solution, the anti-dropping sheet and the positioning piece are provided to facilitate the fixation of the second pin and the follow-up cable guide frame, which is highly convenient. At the same time, the follow-up cable guide frame and the follow-up cable guide rod are connected in a detachable manner, which is convenient for quick disassembly and maintenance of the follow-up cable guide frame.
[0019] Optionally, a clearance gap is provided on the end wall of the anti-slipping plate facing the rotating cylinder, the clearance gap is provided along the circumferential direction of the anti-slipping plate, and the diameter of the remaining part of the end wall of the anti-slipping plate is larger than the inner ring diameter of the deep groove ball bearing.
[0020] By adopting the above technical solution, the provision of the clearance gap can reduce the wear of the anti-slip sheet with the rotating cylinder in the process of following the rotation of the second latch, thereby protecting the structural safety of the anti-slip sheet and extending its service life.
[0021] Optionally, a peripheral wall at the bottom end of the follow-up cable guide rod is provided with reinforcing ribs, and the reinforcing ribs are connected to the rotating cylinder.
[0022] By adopting the above technical solution, the reinforcement ribs can effectively improve the connection stability of the lower end rotating cylinder to prevent the rotating cylinder from falling off the follower cable guide rod, thereby causing the follower cable guide frame to fall off and cause safety hazards.
[0023] In summary, the present application includes at least one of the following beneficial technical effects:
[0024] 1. Through the structure of welding bracket, follow-up cable guide rod and follow-up cable guide frame, the end of the cable close to the boom can be kept in a vertical state, which can effectively reduce the cable's swing amplitude, make it easier to stabilize the cable above the hook, reduce the risk of cable being cut, and improve the safety during crane operation;
[0025] 2. The first nylon roller and the second nylon roller are provided to effectively limit the direction of passage of the cable, further reduce the risk of the cable being cut, and improve the safety of the crane operation. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1It is a structural schematic diagram of a cable guide structure for a cable reel at the head of a boom-type crane in an embodiment of the present application.
[0027] Figure 2 It is a cross-sectional view of the cable guide structure in the embodiment of the present application.
[0028] Figure 3 yes Figure 2 A partial enlarged view of point A in the middle.
[0029] Figure 4 It is a schematic diagram of the structure of the follow-up cable guide in the embodiment of the present application.
[0030] Figure 5 It is a schematic diagram of the actual use structure of the cable guide structure in the embodiment of the present application.
[0031] Explanation of the reference numerals: 1. welding bracket; 2. follow-up cable guide rod; 3. follow-up cable guide frame; 4. passage groove; 5. first nylon roller; 6. mounting plate; 7. second nylon roller; 8. rotating cylinder; 9. first latch; 10. second latch; 11. deep groove ball bearing; 12. positioning hole; 13. anti-slip plate; 14. positioning piece; 15. clearance; 16. reinforcing rib. DETAILED DESCRIPTION
[0032] The following is combined with Figure 1-5 This application is described in further detail.
[0033] The present application embodiment discloses a cable guide structure for a cable reel at the head of a boom type crane. Figure 1 and Figure 2 , including a welding bracket 1, a follower cable guide rod 2 and a follower cable guide bracket 3. The welding bracket 1 is connected to the boom of the crane by welding. Both ends of the follower cable guide rod 2 are connected to a rotating cylinder 8 by welding. A first latch 9 is arranged in the upper rotating cylinder 8. The first latch 9 is fixed to the welding bracket 1, thereby forming a rotating connection between the follower cable guide rod 2 and the welding bracket 1. In this embodiment, deep groove ball bearings 11 are arranged on the inner walls of both ends of the rotating cylinder 8. The first latch 9 is connected to the inner ring of the deep groove ball bearing 11, thereby improving the rotation flexibility.
[0034] Reference Figure 1 and Figure 2The other end circumferential wall of the follower cable guide rod 2 is connected with a reinforcing rib 16 by welding, and the reinforcing rib 16 is connected to the outer wall of the rotating cylinder 8 below to improve the connection strength of the rotating cylinder 8 below. The side wall of the follower cable guide frame 3 facing the rotating cylinder 8 below is connected with a second pin 10 by welding. The second pin 10 passes through the rotating cylinder 8 so that the follower cable guide frame 3 can rotate relative to the follower cable guide rod 2. In this embodiment, two deep groove ball bearings 11 are arranged inside the rotating cylinder 8 at this location, and the second pin 10 is connected to the inner ring of the deep groove ball bearing 11 to improve the rotation flexibility and reduce wear.
[0035] Reference Figure 3 and Figure 4 The second latch 10 is provided with a positioning hole 12 on the end wall away from the follower cable guide 3, and the end of the second latch 10 with the positioning hole 12 passes through the rotating cylinder 8, and the end wall of the second latch 10 is provided with an anti-slip sheet 13, the diameter of the anti-slip sheet 13 is larger than the inner diameter of the rotating cylinder 8, and a positioning member 14 is provided on the anti-slip sheet 13, and the positioning member 14 passes through the anti-slip sheet 13 and is inserted into the positioning hole 12 to fix the second latch 10 and the follower cable guide 3; in this embodiment, the positioning member 14 is in the form of a bolt and a gasket, and the bolt is threadedly connected to the inner wall of the positioning hole 12, so that the positioning member 14 rotates with the second latch 10, and the end wall of the anti-slip sheet 13 facing the second latch 10 is provided with a clearance 15, and the clearance 15 is opened along the circumferential direction of the anti-slip sheet 13, and the diameter of the remaining part of the anti-slip sheet 13 that does not have the clearance 15 needs to be larger than the inner diameter of the deep groove ball bearing 11 to prevent the second latch 10 from falling off.
[0036] Reference Figure 1 and Figure 4 A passage groove 4 for the cable to pass through is provided on the follower cable guide frame 3. Two first nylon rollers 5 parallel to each other are rotatably connected to the inner wall of the opening of the passage groove 4, and the cable passes between the two first nylon rollers 5; two groups of mounting pieces 6 are also connected to the inner wall of the passage groove 4 by welding, and the number of mounting pieces 6 in each group is two. A second nylon roller 7 is rotatably connected between the two mounting pieces 6 in the same group, and the second nylon roller 7 is located below the first nylon roller 5. The length direction of the second nylon roller 7 is perpendicular to the length direction of the first nylon roller 5, so as to further limit the passage direction of the cable and reduce the risk of the cable being cut.
[0037] The implementation principle of the cable guide structure for the cable reel of the head of a boom crane in the embodiment of the present application is as follows: Figure 5Under the action of gravity of the hoisted heavy object, no matter how the crane boom rotates, the follower cable guide 2 will rotate relative to the welding bracket 1 and be in a vertical state. One end of the cable passes through the passage groove 4 and passes between the first nylon roller 5 and the second nylon roller 7. Under the action of gravity of the cable, the follower cable guide 3 will also rotate relative to the follower cable guide 2. Therefore, through the structure of the welding bracket 1, the follower cable guide 2 and the follower cable guide 3, the end of the cable close to the boom can be kept in a vertical state, which can effectively reduce the cable's swing amplitude, make it easier to stabilize the cable above the hook, reduce the risk of the cable being cut, and improve the safety during the crane operation.
[0038] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A cable guide structure for a cable reel at the head of a boom crane, characterized in that: The invention comprises a welding bracket (1), a follower cable guide rod (2) and a follower cable guide frame (3); the welding bracket (1) is fixedly connected to the arm bracket; one end of the follower cable guide rod (2) is rotatably connected to the welding bracket (1); the follower cable guide frame (3) is rotatably connected to the end of the follower cable guide rod (2) away from the welding bracket (1); and a passage groove (4) for the cable to pass through is provided on the follower cable guide frame (3).
2. A cable guide structure for a cable reel at the head of a boom crane according to claim 1, characterized in that: Two first nylon rollers (5) are rotatably connected in the passage groove (4), and the two first nylon rollers (5) are parallel to each other so that the cable can pass between the two first nylon rollers (5).
3. A cable guide structure for a cable reel at the head of a boom crane according to claim 2, characterized in that: The inner wall of the passage groove (4) is provided with two groups of mounting plates (6), each group of the mounting plates (6) has two members, and the mounting plates (6) in the same group are rotatably connected to a second nylon roller (7), the second nylon roller (7) being located below the first nylon roller (5), and the length direction of the second nylon roller (7) is perpendicular to the length direction of the first nylon roller (5).
4. The cable guide structure for the cable reel of the head of a boom type crane according to claim 1, characterized in that: Both ends of the follower cable guide (3) are provided with a rotating cylinder (8), one of which is provided with a first latch (9), the first latch (9) is fixed to the welding bracket (1), and the follower cable guide rod (2) is rotatably connected to the welding bracket (1) via the first latch (9), and the side wall of the follower cable guide (3) is provided with a second latch (10), the second latch (10) is inserted into the rotating cylinder (8) at the other end of the follower cable guide rod (2), and the follower cable guide (3) is rotatably connected to the follower cable guide rod (2) via the second latch (10).
5. A cable guide structure for a cable reel at the head of a boom crane according to claim 4, characterized in that: A plurality of deep groove ball bearings (11) are arranged in the rotating cylinder (8), and the first latch pin (9) and the second latch pin (10) are respectively connected to the inner rings of the corresponding deep groove ball bearings (11).
6. A cable guide structure for a cable reel at the head of a boom crane according to claim 5, characterized in that: A positioning hole (12) is formed at one end of the second latch (10) away from the follower cable guide (3); a corresponding anti-slip sheet (13) is provided on the end wall of the rotating cylinder (8); the diameter of the anti-slip sheet (13) is larger than the inner diameter of the rotating cylinder (8); a positioning piece (14) is provided on the anti-slip sheet (13); the positioning piece (14) passes through the anti-slip sheet (13) and is fixed in the positioning hole (12).
7. A cable guide structure for a cable reel at the head of a boom crane according to claim 6, characterized in that: The end wall of the anti-slip sheet (13) facing the rotating cylinder (8) is provided with a clearance gap (15), the clearance gap (15) is provided along the circumferential direction of the anti-slip sheet (13), and the diameter of the remaining part of the end wall of the anti-slip sheet (13) is larger than the inner ring diameter of the deep groove ball bearing (11).
8. The cable guide structure for the cable reel at the head of a boom crane according to claim 4, characterized in that: A reinforcing rib (16) is provided on the peripheral wall of the bottom end of the follow-up cable guide rod (2), and the reinforcing rib (16) is connected to the rotating cylinder (8).