Ship crane cable limiting structure

Abstract

The invention relates to the technical field of ship cranes, in particular to a ship crane cable limiting structure which comprises a crane jib and a cable, one end of the crane jib is fixedly connected with a hoisting plate, and a winch is arranged at one end of the crane jib. A plurality of groups of directional guide wheels are adopted to optimize a cable path, and the design of a bending radius adjusting mechanism is matched, so that the bending radius of a cable and a movable pulley is increased, the situation that the cable at the movable pulley is rapidly bent due to gravity is avoided, the large bending radius of the cable is kept in the moving process, and friction and damage are reduced; through joint cooperation of the connecting piece and the bending radius adjusting mechanism, the bending radiuses of the cables on the two sides of the lifting hook assembly are adjusted, meanwhile, the cables can be adaptively tensioned, the situation of cable conveying clamping stagnation is prevented, the cables at the bent positions can form a stable triangular shape, the situation that a hoisted object shakes is further avoided, and the hoisting efficiency is improved. The overall safety performance of the ship crane is improved.

Description

Technical Field

[0001] The invention relates to the technical field of ship cranes, and in particular to a cable limiting structure for a ship crane. Background Art

[0002] As key equipment for offshore operations, ship cranes undertake important tasks such as cargo lifting and transfer. Cable limit structures, as an important component of cranes, have the main function of ensuring that cables move within a specified range and preventing them from being overstretched, worn or entangled, thereby ensuring the safe and stable operation of cranes. Traditional cable limit structures usually adopt physical limit methods, such as setting limit switches, blocks, etc., and triggering limit signals through the contact between the cables and these physical structures, thereby controlling the movement range of the cables.

[0003] In the prior art, there is a small crane with publication number CN219078837U, which includes a crane body, a pull rope located on the crane body and a hook at one end of the pull rope, a mounting block is provided at one end of the pull rope, two through-holes are provided on one side of the mounting block, one end of the pull rope passes through one through-hole, then passes around the upper end of the hook, and then passes through the other through-hole, a connecting plate is provided on one side of the mounting block, this small crane has two through-holes on one side of the mounting block, one end of the pull rope passes through one through-hole, then passes around the upper end of the hook, and then passes through the other through-hole, a pointed plug rod passing through the pull rope is fixedly connected to one side of the connecting plate on one side of the mounting block, a threaded rod slidably connected to the mounting block and threadedly connected to the mounting block is provided on one side of the connecting plate, after the pull rope is connected to the hook, the pull rope can be limited and fixed by the pointed plug rod to avoid the use of knotting, which is easy to loosen or inconvenient to disassemble.

[0004] However, in actual use, although the knot problem between the hook and the pull rope has been solved, when the object hoisted by the hook exceeds the load, the cable at the moving wheel will bend sharply under the action of gravity, causing the cable to be in a smaller bending radius during movement, resulting in a sharp increase in friction between the cable and the moving wheel, thereby causing wear of the cable and the moving wheel.

[0005] Therefore, the present invention proposes a cable limiting structure for a ship crane to solve the problem that the objects hoisted by the prior art equipment exceed the load, causing the cable at the driving wheel to be sharply bent, thereby causing wear of the cable and the driving wheel. While optimizing the cable path, the present invention quickly responds to the situation where the cable and the driving wheel are sharply bent, increases the cable bending radius, reduces cable wear, avoids accidental breakage, and improves the overall safety performance of the ship crane. Summary of the invention

[0006] In view of the deficiencies in the prior art, an object of the present invention is to provide a ship crane cable limiting structure to solve the problems raised in the above background technology.

[0007] To achieve the above object, the present invention provides the following technical solution: A cable limit structure for a ship crane, comprising a crane boom and a cable. One end of the crane boom is fixedly connected with a hoisting plate, and a winch is arranged at one end of the crane boom. One end of the cable is connected to the winch. The outer surface of the cable is respectively provided with a directional guide wheel one, a directional guide wheel two and a directional guide wheel three. Inside the center of the hoisting plate, there is a sheet metal vertical plate fixedly connected with one end of the crane boom. The directional guide wheel two and the directional guide wheel three are respectively arranged on both sides of the sheet metal vertical plate. A hook assembly is arranged directly below the sheet metal vertical plate. The hook assembly includes a movable pulley and a connecting member. The connecting member includes a hoisting hook member and a connecting cross plate. A square notch is formed on the inner wall of the upper side of the hook assembly, and a limit mounting plate is fixedly installed on the inner surface of the square notch. A bending radius adjusting mechanism is arranged on the limit mounting plate. The bending radius adjusting mechanism includes a driving assembly, a hollow fixed arm cylinder, a hollow movable rod and a mounting arc plate one.

[0008] Preferably, the hoisting hook member is movably installed at the lower end of the hook assembly, the connecting cross plate is fixedly installed at the upper end of the hook assembly, and parallel end plates are respectively fixedly connected to both ends of the connecting cross plate. The connecting cross plate and the parallel end plates jointly form a "C"-shaped plate-like structure with an upward opening, and a limit walking assembly is arranged on the upper side of the parallel end plates.

[0009] Preferably, the limit walking assembly includes a movable plate. The outer surface of the movable plate is slidably connected to the inner wall of the upper end of the parallel end plate. One end of the movable plate is fixedly connected with an anti-disengagement cross bar, and a toothed plate is arranged at the end of the movable plate away from the anti-disengagement cross bar.

[0010] Preferably, a connecting rib plate is arranged inside the anti-disengagement cross bar. The connecting rib plate is fixedly installed on the outer surface of the parallel end plate, and a touch switch is correspondingly installed in the middle section of the connecting rib plate.

[0011] Preferably, the movable plate is composed of two groups of parallel J-shaped plates. Inside the two groups of parallel J-shaped plates, there is a fixedly connected mounting arc plate two. An auxiliary guide wheel two and an auxiliary guide wheel three are movably connected to the inner surface of the mounting arc plate two.

[0012] Preferably, an elastic member is arranged between the mounting arc plate two and the inner side of the parallel end plate. The elastic member includes an elastic member and a limit sleeve. Both ends of the elastic member and the limit sleeve are respectively fixedly connected to the outer surfaces of the mounting arc plate two and the parallel end plate. The elastic member is slidably sleeved on the outer side of the limit sleeve.

[0013] Preferably, the driving assembly includes a linkage motor, which is fixedly mounted on an outer surface of one side of a limit mounting plate, and an output end of the linkage motor is electrically connected to a touch switch, and a bevel gear 1 is fixedly connected to the output shaft of the linkage motor, and bevel gear 2 is meshed and rotated on the outer surfaces of both sides of the bevel gear 1, and the bevel gear 2 is provided with two groups and is symmetrically distributed about the central axis of the bevel gear 1, and the central inner surfaces of the two groups of bevel gears 2 are respectively fixedly connected with threaded rods, and the outer surfaces of the threaded rods are rotatably connected to the inner wall of the hollow fixed arm tube, and a limit pad is fixedly provided on the end of the threaded rod away from the bevel gear 2, and the diameter of the limit pad is larger than the diameter of the threaded rod.

[0014] Preferably, a central slide groove is provided on the inner wall of the hollow fixed arm tube, and side grooves are respectively provided on both sides of the central slide groove, the inner surface of the central slide groove is slidably connected to the outer surface of the hollow movable rod, the inner wall of one end of the hollow movable rod is threadedly connected to the outer surface of the threaded rod, and one end of the hollow movable rod is fixedly connected to a sliding side block, and the outer surface of the sliding side block is slidably connected to the inner wall of the side groove.

[0015] Preferably, one end of the hollow movable rod away from the sliding edge block is fixedly connected to the outer surface of the mounting arc plate, an auxiliary guide wheel is provided on the inner side of the mounting arc plate, and toothed discs are respectively provided on the outer surfaces of both sides of the mounting arc plate. The toothed discs are rotatably installed on both sides of the mounting arc plate, and the outer surfaces of the toothed discs are adapted to mesh with the outer surfaces of the toothed plate.

[0016] Preferably, an auxiliary lubrication component is provided at the connection between the hollow movable rod and the mounting arc plate, and the auxiliary lubrication component includes a mounting cylinder, and the mounting cylinder is a hollow cylindrical structure. An oil storage bag is provided in the inner cavity of the mounting cylinder, and an oil nozzle is provided at the output end of the oil storage bag. A circular groove is provided at one end of the mounting cylinder close to the hollow movable rod, and the outer surface of the oil storage bag is movably abutted against the outer surface of the limiting pad.

[0017] Compared with the prior art, the present invention has the following beneficial effects: A cable limiting structure for a ship crane proposed in the present invention optimizes the cable path by adopting multiple sets of directional guide wheels, and cooperates with the design of a bending radius adjustment mechanism to increase the bending radius at the cable and the movable pulley, thereby avoiding sharp bending of the cable at the movable wheel due to gravity, and allowing the cable to maintain a larger bending radius during movement, thereby reducing friction and damage; and through the cooperation of a connecting piece and the bending radius adjustment mechanism, while adjusting the bending radius of the cables on both sides of the hook assembly, the cables can also be adaptively tensioned to prevent cable transmission jams, and the cables at the bends can be formed into a stable triangular shape, further avoiding the shaking of the hoisted objects, thereby improving the overall safety performance of the ship crane. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the connection structure of the local crane boom and hook assembly of the present invention; Figure 2 The hidden structure of the hanging plate of the present invention is shown in FIG. Figure 1 ; Figure 3 The hidden structure of the hanging plate of the present invention is shown in FIG. Figure 2 ; Figure 4 For the present invention Figure 3 A schematic diagram of the enlarged structure at point A; Figure 5 It is a schematic diagram of the connection structure between the emergency anti-falling assembly and the hook assembly of the present invention; Figure 6 It is a schematic diagram of the connection structure between the hook assembly and the bending radius adjustment mechanism of the present invention; Figure 7 For the present invention Figure 6 A schematic diagram of the enlarged structure at B; Figure 8 It is a schematic diagram of the position limiting structure of the bending radius adjustment mechanism and the traveling assembly for the cable of the present invention; Fig. 9 It is a schematic diagram of the connection structure between the walking assembly and the second mounting arc plate of the present invention; Fig.10 It is a three-dimensional structural schematic diagram of the bending radius adjustment mechanism of the present invention; Fig.11 It is a top cross-sectional structural schematic diagram of the bending radius adjustment mechanism of the present invention; Fig.12 For the present invention Fig.11 A schematic diagram of the enlarged structure at C; Fig.13 For the present invention Fig.12 A schematic diagram of the enlarged structure at C1; Fig.14 It is a side structural schematic diagram of the hook assembly of the present invention.

[0019] In the figure: 1. crane boom; 11. cable; 12. directional guide wheel 1; 13. directional guide wheel 2; 14. directional guide wheel 3; 2. lifting plate; 21. sheet metal vertical plate; 211. winding drum; 2110. anti-fall protection rope; 212. connecting guard plate; 213. guide bucket; 22. connecting lifting lug; 3. hook assembly; 300. movable pulley; 31. lifting hook; 32. connecting horizontal plate; 321. parallel end plate; 322. movable plate; 3221. anti-drop cross bar; 323. connecting rib plate; 3231. touch switch; 3222. tooth plate; 30. square notch; 4. limit mounting plate; 41. Hollow fixed arm tube; 410. Side groove; 411. Linkage motor; 412. Bevel gear one; 413. Bevel gear two; 414. Threaded rod; 415. Limiting pad; 42. Hollow movable rod; 421. Sliding edge block; 422. Mounting tube; 4220. Circular groove; 4221. Oil storage bag; 4222. Oil injection nozzle; 4223. Connecting collar; 4224. Elastic plate; 43. Install arc plate one; 431. Auxiliary guide wheel one; 432. Toothed disc; 44. Install arc plate two; 441. Auxiliary guide wheel two; 442. Auxiliary guide wheel three; 45. Elastic member; 451. Limiting sleeve. DETAILED DESCRIPTION

[0020] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, not all of them, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] For example, see Figure 1-14The present invention provides a technical solution: a ship crane cable limiting structure, comprising a crane boom 1 and a cable 11, one end of the crane boom 1 is fixedly connected to a lifting plate 2, one end of the crane boom 1 is provided with a winch, one end of the cable 11 is connected to the winch, and the outer surface of the cable 11 is respectively provided with a directional guide wheel 12, a directional guide wheel 2 13 and a directional guide wheel 3 14, a sheet metal vertical plate 21 fixedly connected to one end of the crane boom 1 is provided on the inner side of the center of the lifting plate 2, the directional guide wheel 2 13 and the directional guide wheel 3 14 are respectively arranged on both sides of the sheet metal vertical plate 21, and a hook assembly 3 is arranged directly below the sheet metal vertical plate 21, the hook assembly 3 includes a movable pulley 300 and a connecting member, the connecting member includes a lifting hook 31 and a connecting horizontal plate 32, a square notch 30 is opened on the upper inner wall of the hook assembly 3, and a limited position installation is fixedly installed on the inner surface of the square notch 30 The mounting plate 4 is provided with a bending radius adjustment mechanism on the limit mounting plate 4, and the bending radius adjustment mechanism includes a driving component, a hollow fixed arm tube 41, a hollow movable rod 42 and a mounting arc plate 43; an emergency anti-falling component is provided between the sheet metal vertical plate 21 and the limit mounting plate 4, and the emergency anti-falling component includes a winding drum 211 and a connecting ear 22, and the connecting ear 22 is fixedly mounted on the upper end outer surface of the limit mounting plate 4, and the winding drum 211 is rotatably mounted on the lower end of the sheet metal vertical plate 21, and one end of the winding drum 211 is driven and controlled by a motor, and an anti-falling protection rope 2110 is wound and connected to the outer surface of the winding drum 211, and the other end of the anti-falling protection rope 2110 is fixedly connected to the connecting ear 22, and the lower end of the sheet metal vertical plate 21 is fixedly connected to a connecting guard plate 212, and a guide bucket 213 is fixedly added to the central section of the connecting guard plate 212, and the anti-falling protection rope 2110 is passed through the guide bucket 213; In this embodiment, one end of the cable 11 is connected to the hoist, and a directional guide wheel 12 is set at the end where the crane boom 1 is connected to the hoisting plate 2 to guide the cable 11. The sheet metal riser 21 installed on the inner side of the hoisting plate 2 is matched, and the two sides thereof are respectively connected to the directional guide wheel 2 13 and the directional guide wheel 3 14, and the end of the cable 11 away from the hoist is connected to the lower end of the crane boom 1. When the goods are hoisted, the goods are hooked by the hoisting hook 31. At this time, the cable 11 is respectively connected to the directional guide wheel 12, the directional guide wheel 2 13 and the directional guide wheel 3 14. 4 slides on the guide, and a triangular structure is formed between the cable 11 and the hook assembly 3. When the winch releases the line, the cable 11 rolls on the movable pulley 300 inside the hook assembly 3, and the hook assembly 3 is lowered under the gravity of the goods and the line-releasing action of the winch; in addition, the emergency anti-falling component added at the lower end of the sheet metal vertical plate 21 is used to prevent the hook assembly 3 from falling urgently. It should be noted that during the overall lowering of the hook assembly 3, the line-releasing frequency of the winding drum 211 is adjusted to be consistent with the line-releasing frequency of the winch, so as not to affect the normal operation of the hook assembly 3 and the hooked goods.

[0022] Embodiment 2. Refer to the appendix Figure 1-14 , on the basis of Embodiment 1, in order to realize the installation of the walking assembly on the connecting cross plate 32: The lifting hook member 31 is movably installed at the lower end of the hook assembly 3, the connecting cross plate 32 is fixedly installed at the upper end of the hook assembly 3, and parallel end plates 321 are respectively fixedly connected to both ends of the connecting cross plate 32. The connecting cross plate 32 and the parallel end plates 321 jointly form a "C"-shaped plate-like structure with an upward opening. A limiting walking assembly is arranged on the upper side of the parallel end plate 321; The limiting walking assembly includes a movable plate 322, the outer surface of the movable plate 322 is slidably connected to the inner wall of the upper end of the parallel end plate 321, one end of the movable plate 322 is fixedly connected with an anti-disengagement cross bar 3221, and a toothed plate 3222 is arranged at the end of the movable plate 322 away from the anti-disengagement cross bar 3221; A connecting rib plate 323 is arranged inside the anti-disengagement cross bar 3221, the connecting rib plate 323 is fixedly installed on the outer surface of the parallel end plate 321, and a touch switch 3231 is correspondingly installed in the middle section of the connecting rib plate 323; In this embodiment, the connecting cross plate 32 and the hook assembly 3 are jointly installed, and parallel end plates 321 are symmetrically installed at both ends of the connecting cross plate 32. Here, the parallel end plates 321 serve as a limiting assembly for the horizontal sliding movement of the movable plate 322. The cable 11 passes through the inside of the installation arc plate two 44 and is located between the auxiliary guide wheel two 441 and the auxiliary guide wheel three 442. When the cable 11 moves, the movable plate 322 moves due to the vertical gravity pull of the cable 11. At this time, the toothed plate 3222 arranged at the lower end of the movable plate 322 is adaptively engaged with the surface of the lower toothed disc 432, and the toothed disc 432 rotates. It should be noted that the reason for adding this walking assembly on the parallel end plate 321 is to not only ensure the stability of the horizontal movement of the installation arc plate two 44, but also meet the situation where when the cable 11 bends inward too much, the movable plate 322 is quickly moved inward. At this time, the anti-disengagement cross bar 3221 triggers the touch switch 3231 inside, so as to quickly trigger the driving assembly and quickly adjust the bending radius of the cable 11. Here, the connecting rib plate 323 plays a role in increasing the strength of the touch switch 3231 and blocking protection, avoiding damage to the touch switch 3231 caused by the too fast sliding speed of the movable plate 322.

[0023] Embodiment 3. Refer to the appendix Figure 1-14 , on the basis of Embodiment 2, in order to realize the timely response of the driving assembly: The movable plate 322 is composed of two groups of parallel J-shaped plates, and an installation arc plate two 44 is fixedly connected to the inside of the two groups of parallel J-shaped plates. An auxiliary guide wheel two 441 and an auxiliary guide wheel three 442 are movably connected to the inner surface of the installation arc plate two 44; An elastic member is arranged between the inner sides of the installation arc plate two 44 and the parallel end plate 321. The elastic member includes an elastic member 45 and a limiting sleeve 451. The two ends of the elastic member 45 and the limiting sleeve 451 are respectively fixedly connected to the outer surfaces of the installation arc plate two 44 and the parallel end plate 321, and the elastic member 45 is slidably sleeved on the outside of the limiting sleeve 451; In this embodiment, an elastic member is connected to the back side of the mounting arc plate 2 44. When there is a cargo load on the lifting hook 31, the bending radius of the cable 11 becomes smaller inward due to the influence of gravity. At this time, the cable between the auxiliary guide wheel 2 441 and the auxiliary guide wheel 3 442 bends inward. At this time, the elastic member 45 is rapidly stretched, and the limiting sleeve 451 moves accordingly. It should be noted that when the lifting cargo is within the normal load-bearing range, the elastic member 45 is always in a state of tensioning the mounting arc plate 2 44, and the anti-drop cross bar 3221 is far away from the touch switch 3231 at this time, and will not trigger the drive component. At this time, the mounting arc plate 2 44 always keeps the cable 11 at a larger bending radius and provides a path for the cable 11 to move, which will not cause the cable 11 to deviate from the predetermined path. It should also be noted that the elastic member can also provide a relatively stable force to the cable 11 at this time, weakening the shaking of the cable 11 during operation, and further enhancing the stability of the ship crane lifting.

[0024] Embodiment 4, refer to the attached Figure 1-14 On the basis of the third embodiment, in order to increase the bending radius of the cable 11 for the operation of the driving component: the driving component includes a linkage motor 411, the linkage motor 411 is fixedly mounted on the outer surface of one side of the limit mounting plate 4, the output end of the linkage motor 411 is electrically connected to the touch switch 3231, and a bevel gear 1 412 is fixedly connected to the output shaft of the linkage motor 411, and the outer surfaces of both sides of the bevel gear 1 412 are meshed and rotated with a bevel gear 2 413, and the bevel gear 2 413 is provided with two groups and symmetrically distributed about the central axis of the bevel gear 1 412, and the central inner surfaces of the two groups of bevel gears 2 413 are respectively fixedly connected with threaded rods 414, and the outer surfaces of the threaded rods 414 are rotatably connected to the inner wall of the hollow fixed arm tube 41, and a limit pad 415 is fixedly added to the end of the threaded rod 414 away from the bevel gear 2 413, and the diameter of the limit pad 415 The cam 420 is a plurality of cams which are connected to the bottom surface of the hollow movable rod 42. The cam 420 is a plurality of cams which are connected to the bottom surface of the hollow movable rod 42. The cam 420 is a plurality of cams which are connected to the bottom surface of the hollow movable rod 42. The cam 420 is a plurality of cams which are connected to the bottom surface of the hollow movable rod 42. The cam 420 is a plurality of cams which are connected to the bottom surface of the hollow movable rod 42. The cam 420 is a plurality of cams which are connected to the bottom surface of the hollow movable rod 42. The cam 420 is a plurality of cams which are connected to the bottom surface of the hollow movable rod 42. In this embodiment, the touch switch 3231 is electrically connected to the linkage motor 411. When the linkage motor 411 is triggered, its output shaft rotates and provides driving force to the bevel gear 1 412. At this time, the bevel gear 1 412 rotates and drives the bevel gears 2 413 on both sides to engage. The threaded rod 414 rotates and is threadedly adapted with one end of the hollow movable rod 42. The hollow movable rod 42 is subject to the dual limiting effects of the thread adaptation and the side groove 410, so that the two sets of mounting arc plates 1 43 move away from the position of the limiting mounting plate 4 to both sides at the same time. At this time, the auxiliary guide wheel 1 431 moves with the surface of the cable 11 to adjust the cables on both sides. 11 is pushed outward, increasing the bending radius of the distance between the installation arc plate 1 43 and the movable pulley 300, avoiding the sharp bending of the cable 11, and at this time, after the cable 11 is pushed outward, the cable clamped between the auxiliary guide wheel 2 441 and the auxiliary guide wheel 3 442 at the upper end tends to be in a straightened state, so that the installation arc plate 1 43 and the installation arc plate 2 44 will not be staggered to cause wear of the cable 11, and the normal operation of the cable 11 can be maintained; it is worth noting that the toothed discs 432 and the toothed plates 3222 on both sides of the installation arc plate 1 43 are always meshed and matched, thus ensuring the stability of the relative movement of the installation arc plate 1 43; It should be noted that when the cable 11 needs to be tensioned, the driving assembly here drives the two sets of mounting arc plates 43 to make multiple relative movements, which can achieve the tensioning effect of the cable 11, avoid the jamming of a certain section of the cable 11 during operation, provide support force to the cable 11 while preventing the cable from loosening, and further improve the transmission efficiency of the ship crane cable.

[0025] Embodiment 5, refer to the attached Figure 1-14 On the basis of the fourth embodiment, in order to achieve the smooth operation of the cable 11: an auxiliary lubrication component is provided at the connection between the hollow movable rod 42 and the mounting arc plate 43, and the auxiliary lubrication component includes a mounting cylinder 422, and the mounting cylinder 422 is a hollow cylindrical structure. The inner cavity of the mounting cylinder 422 is provided with an oil storage bag 4221, and the output end of the oil storage bag 4221 is provided with an oil nozzle 4222. A circular groove 4220 is provided at one end of the mounting cylinder 422 close to the hollow movable rod 42, and the outer surface of the oil storage bag 4221 is movably abutted against the outer surface of the limiting pad 415; the inner cavity of the mounting cylinder 422 is provided with an oil storage bag 4221, and the outer surface of the oil storage bag 4221 is movably abutted against the outer surface of the limiting pad 415; A pullback assembly is provided on the side, and the pullback assembly includes a connecting ring 4223 and an elastic plate 4224. The connecting ring 4223 is annular in structure, and the connecting ring 4223 is fixedly sleeved on the outer surface of the mounting tube 422. The elastic plates 4224 are provided in six groups and are arranged in a circular array about the central axis of the connecting ring 4223. The six groups of elastic plates 4224 are all fixedly installed on one side surface of the connecting ring 4223. The other end of the elastic plate 4224 is fixedly connected to the inner wall of the mounting tube 422. The upper end of the oil storage bag 4221 is connected with an oil injection pipe, and a one-way valve is provided on the inner side of the oil injection pipe. In this embodiment, if Figure 11-13 As shown, in the process of providing tensioning force and bending radius supporting force for the cable 11, the hollow movable rod 42 reciprocates inside the installation arc plate 43, and the limiting pad 415 connected to one end of the threaded rod 414 not only prevents the hollow movable rod 42 from falling off, but also can achieve the effect of lubricating the surface of the auxiliary guide wheel 431. Specifically, when the hollow movable rod 42 moves and drives the oil storage bag 4221 to contact the limiting pad 415, the limiting pad 415 squeezes the oil storage bag 4221. At this time, the oil storage bag 4221 is compressed and deformed by the external force, and the lubricating oil filled inside is squeezed out by the oil nozzle 4222 and sprayed on the surface of the auxiliary guide wheel 431, thereby achieving the effect of both auxiliary lubrication of the surface of the cable 11 and auxiliary lubrication of the surface of the cable 11. The lubrication between the auxiliary guide wheel 431 reduces the friction of the cable 11 and improves the smoothness of operation; and by installing a connecting ring 4223 on the outer ring of the oil storage bag 4221, when the oil storage bag 4221 is pushed, the elastic plate 4224 is stretched. Once the oil storage bag 4221 is away from the limiting pad 415, the oil storage bag 4221 quickly rebounds under the reverse elastic force of the elastic plate 4224. At this time, the lubricating oil no longer sprays out, thereby achieving automatic lubrication of the cable 11 and the auxiliary guide wheel 431; in addition, in order to facilitate the addition of lubricating oil, an oil filling pipe is also provided at the upper end of the oil storage bag 4221, and a one-way valve is installed on the inner side of the oil filling pipe to ensure the one-way flow and sealing of the lubricating oil.

[0026] The working principle and use process of the present invention are as follows: in actual use, first, one end of the cable 11 is connected to the hoist, and a directional guide wheel 12 is set at the end where the crane boom 1 is connected to the hoisting plate 2 to guide the cable 11, and the sheet metal vertical plate 21 installed on the inner side of the hoisting plate 2 is matched, and the two sides of the vertical plate 21 are respectively connected to the directional guide wheel 2 13 and the directional guide wheel 3 14, and the end of the cable 11 away from the hoist is connected to the lower end of the crane boom 1. When hoisting the goods, the goods are hooked by the hoisting hook 31. At this time, the cable 11 is respectively on the directional guide wheel 12 and the directional guide wheel 3. The cable 11 slides on the second arc plate 44 and the directional guide wheel 3 14, and a triangular structure is formed between the cable 11 and the hook assembly 3. When the winch releases the line, the cable 11 rolls on the movable pulley 300 inside the hook assembly 3, and the hook assembly 3 is lowered under the gravity of the goods and the release of the winch; the cable 11 passes through the inner side of the installation arc plate 44 and is between the auxiliary guide wheel 2 441 and the auxiliary guide wheel 3 442. When the cable 11 moves, the movable plate 322 is pulled by the vertical gravity of the cable 11 to move, and at this time, the tooth plate 3222 set at the lower end of the movable plate 322 is adapted to mesh with the surface of the toothed disc 432 below When the movable plate 322 is engaged, the toothed disc 432 rotates. When the movable plate 322 is quickly moved inward, the anti-dropping cross bar 3221 triggers the inner touch switch 3231, so that the driving component is quickly triggered to quickly adjust the bending radius of the cable 11; when the linkage motor 411 is triggered, its output shaft rotates and provides driving force to the bevel gear 1 412. At this time, the bevel gear 1 412 rotates and drives the bevel gears 2 413 on both sides to mesh, the threaded rod 414 rotates, and is threadedly adapted with one end of the hollow movable rod 42. The hollow movable rod 42 is subject to the dual limiting effects of the thread adaptation and the side groove 410, so that the two The mounting arc plate 1 43 is moved to both sides away from the position of the limit mounting plate 4 at the same time. At this time, the auxiliary guide wheel 1 431 and the surface of the cable 11 move to push the cables 11 on both sides outward, thereby increasing the bending radius of the section between the mounting arc plate 1 43 and the movable pulley 300 to avoid sharp bending of the cable 11. At this time, after the cable 11 is pushed outward, the cable 11 and the upper end clamped between the auxiliary guide wheel 2 441 and the auxiliary guide wheel 3 442 tend to be aligned. In this way, the mounting arc plate 1 43 and the mounting arc plate 2 44 will not be staggered to cause wear of the cable 11, and the normal operation of the cable 11 can be maintained.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A ship crane cable limiting structure, comprising a crane boom (1) and a cable (11), wherein one end of the crane boom (1) is fixedly connected to a lifting plate (2), one end of the crane boom (1) is provided with a winch, one end of the cable (11) is connected to the winch, and the outer surface of the cable (11) is respectively provided with a directional guide wheel 1 (12), a directional guide wheel 2 (13) and a directional guide wheel 3 (14), characterized in that: Inside the center of the hoisting plate (2), there is a sheet metal vertical plate (21) fixedly connected to one end of the crane boom (1). The second directional guide wheel (13) and the third directional guide wheel (14) are respectively arranged on both sides of the sheet metal vertical plate (21). Below the sheet metal vertical plate (21), there is a hook assembly (3). The hook assembly (3) includes a movable pulley (300) and a connecting member. The connecting member includes a hoisting hook member (31) and a connecting cross plate (32). On the upper inner wall of the hook assembly (3), there is a square notch (30). On the inner surface of the square notch (30), a limit mounting plate (4) is fixedly installed. On the limit mounting plate (4), there is a bending radius adjusting mechanism. The bending radius adjusting mechanism includes a driving assembly, a hollow fixed arm cylinder (41), a hollow movable rod (42), and a mounting arc plate one (43).

2. A ship crane cable limiting structure according to claim 1, characterized in that: The hoisting hook member (31) is movably installed at the lower end of the hook assembly (3). The connecting cross plate (32) is fixedly installed at the upper end of the hook assembly (3). At both ends of the connecting cross plate (32), parallel end plates (321) are respectively fixedly connected. The connecting cross plate (32) and the parallel end plates (321) jointly form a "C"-shaped plate-like structure with an upward opening. On the upper side of the parallel end plates (321), there is a limit walking assembly.

3. A ship crane cable limiting structure according to claim 2, characterized in that: The limit walking assembly includes a movable plate (322). The outer surface of the movable plate (322) is slidably connected to the upper inner wall of the parallel end plate (321). One end of the movable plate (322) is fixedly connected with an anti-disengagement cross bar (3221). At the end of the movable plate (322) away from the anti-disengagement cross bar (3221), there is a toothed plate (3222).

4. A ship crane cable limiting structure according to claim 3, characterized in that: Inside the anti-disengagement cross bar (3221), there is a connecting rib plate (323). The connecting rib plate (323) is fixedly installed on the outer surface of the parallel end plate (321). A touch switch (3231) is correspondingly installed in the middle section of the connecting rib plate (323).

5. A ship crane cable limiting structure according to claim 3, characterized in that: The movable plate (322) is composed of two groups of parallel J-shaped plates. Inside the two groups of parallel J-shaped plates, a mounting arc plate two (44) is fixedly connected. On the inner surface of the mounting arc plate two (44), a second auxiliary guide wheel (441) and a third auxiliary guide wheel (442) are movably connected.

6. A ship crane cable limiting structure according to claim 5, characterized in that: Between the inner side of the mounting arc plate two (44) and the parallel end plate (321), there is an elastic member. The elastic member includes an elastic member (45) and a limit sleeve (451). The two ends of the elastic member (45) and the limit sleeve (451) are respectively fixedly connected to the outer surfaces of the mounting arc plate two (44) and the parallel end plate (321). The elastic member (45) is slidably sleeved on the outer side of the limit sleeve (451).

7. A ship crane cable limiting structure according to claim 4, characterized in that: The driving assembly comprises a linkage motor (411), the linkage motor (411) being fixedly mounted on an outer surface of one side of the limit mounting plate (4), the output end of the linkage motor (411) being electrically connected to the touch switch (3231), a bevel gear 1 (412) being fixedly connected to the output shaft of the linkage motor (411), bevel gear 2 (413) being meshed and rotatably engaged on the outer surfaces of both sides of the bevel gear 1 (412), and the bevel gear 2 (413) being provided with Two groups are symmetrically distributed about the central axis of the bevel gear one (412); the central inner surfaces of the two groups of bevel gear two (413) are respectively fixedly connected with threaded rods (414); the outer surfaces of the threaded rods (414) are rotatably connected to the inner wall of the hollow fixed arm tube (41); a limiting pad (415) is fixedly provided at one end of the threaded rod (414) away from the bevel gear two (413); the diameter of the limiting pad (415) is larger than the diameter of the threaded rod (414).

8. A ship crane cable limiting structure according to claim 7, characterized in that: A central slide groove is provided on the inner wall of the hollow fixed arm tube (41), and side grooves (410) are respectively provided on both sides of the central slide groove. The inner surface of the central slide groove is slidably connected to the outer surface of the hollow movable rod (42), and the inner wall of one end of the hollow movable rod (42) is threadedly connected to the outer surface of the threaded rod (414). A sliding side block (421) is fixedly connected to one end of the hollow movable rod (42), and the outer surface of the sliding side block (421) is slidably connected to the inner wall of the side groove (410).

9. A ship crane cable limiting structure according to claim 8, characterized in that: One end of the hollow movable rod (42) away from the sliding edge block (421) is fixedly connected to the outer surface of the mounting arc plate (43); an auxiliary guide wheel (431) is arranged on the inner side of the mounting arc plate (43); toothed discs (432) are respectively arranged on the outer surfaces of both sides of the mounting arc plate (43); the toothed discs (432) are rotatably mounted on both sides of the mounting arc plate (43); and the outer surface of the toothed disc (432) is adapted to mesh with the outer surface of the toothed plate (3222).

10. A ship crane cable limiting structure according to claim 9, characterized in that: An auxiliary lubrication component is provided at the connection between the hollow movable rod (42) and the mounting arc plate (43), the auxiliary lubrication component comprising a mounting cylinder (422), the mounting cylinder (422) being of a hollow cylindrical structure, an oil storage bag (4221) being provided in the inner cavity of the mounting cylinder (422), an oil nozzle (4222) being provided at the output end of the oil storage bag (4221), a circular groove (4220) being provided at one end of the mounting cylinder (422) close to the hollow movable rod (42), and an outer surface of the oil storage bag (4221) being in movably contact with an outer surface of a limiting cushion block (415).

Images