Automatic leveling device for hanging points

Abstract

An automatic leveling device for a lifting point relates to the technical field of yacht lifting equipment, comprising a winch, a lifting mechanism, a frame, a redirecting wheel and a rope end fixing device; a redirecting wheel is provided at one end of the bottom of the frame, a rope end fixing device is provided at the other end, and two sets of lifting mechanisms are provided at intervals at the bottom of the frame corresponding to the positions between the redirecting wheel and the rope end fixing device; the winch is located below the redirecting wheel and is correspondingly and tightly connected to the ground, and the steel wire rope of the winch is redirected by the redirecting wheel and is sequentially wound around the two lifting mechanisms at the bottom of the frame and then correspondingly and tightly connected to the rope end fixing devices; the lifting mechanism comprises a fixed pulley block, a movable pulley block and a sling, and the fixed pulley block comprises a fixed pulley bracket, a fixed pulley, a toothed pulley sheet, a pinion and a pinion bracket; the present invention effectively solves the problems of difficulty in leveling the lifting points of existing yacht lifting equipment and extremely inconvenient operation.

Description

Technical Field

[0001] The invention relates to the technical field of yacht lifting equipment, in particular to an automatic leveling device for hanging points. Background Art

[0002] As is known to all, China has 90,000 lakes, 6,500 islands, and 18,000 kilometers of coastline, which are natural geographical conditions for yacht consumption. Many places have successively established yacht clubs of considerable scale, and yacht tourism and leisure economy are rapidly rising. In the past few years, China's yacht manufacturing industry has developed most rapidly. Chinese yacht manufacturing companies are mainly concentrated in Shenzhen, Shanghai, Zhuhai and other places. Judging from the per capita consumption level of China and foreign countries, my country's yacht industry can be said to be still at the starting line, with huge room for development. Shanghai, Shandong, Fujian, Liaoning, Zhejiang, Guangdong and other eastern coastal provinces have formulated relevant plans for the yacht industry, and a large number of waters are expected to be opened up, and supporting facilities will gradually keep up.

[0003] As an important lifting equipment for the maintenance and transportation of yachts, especially large yachts, yacht handling cranes have entered a period of rapid development with the development of my country's yacht industry. Yacht handling cranes can adapt to different road conditions and lift yachts to designated locations while protecting the yachts to the greatest extent. Existing yacht cranes are mostly equipped with multiple lifting points above the yacht, each lifting point corresponds to a movable pulley block, which is lifted by a winch. However, when the movable pulley block is unloaded, the movable pulley block close to the winch generally rises first, and when the movable pulley block close to the winch rises to the limit position, the adjacent movable pulley block begins to rise. Only when it is overloaded can it rise synchronously. Therefore, when it is unloaded, manual assistance is required to level each lifting point, which is extremely inconvenient to operate and has low safety performance. How to make it have better operability and safety is an urgent problem to be solved. Summary of the invention

[0004] In order to overcome the deficiencies in the background technology, the present invention discloses an automatic leveling device for a hanging point.

[0005] In order to achieve the above-mentioned invention object, the present invention adopts the following technical scheme:

[0006] An automatic leveling device for a lifting point comprises a winch, a lifting mechanism, a frame, a redirecting wheel and a rope end fixing device; a redirecting wheel is provided at one end of the bottom of the frame, a rope end fixing device is provided at the other end, two sets of lifting mechanisms are provided at intervals at the bottom of the frame corresponding to the position between the redirecting wheel and the rope end fixing device; the winch is located below the redirecting wheel and is correspondingly and tightly connected to the ground, and the steel wire rope of the winch is redirected by the redirecting wheel and sequentially wound around the two sets of lifting mechanisms at the bottom of the frame and then correspondingly and tightly connected to the rope end fixing device;

[0007] The lifting mechanism comprises a fixed pulley block, a movable pulley block and a sling, the fixed pulley block comprises a fixed pulley bracket, a fixed pulley, a toothed pulley piece, a pinion and a pinion bracket, the fixed pulley bracket is a cross-shaped structure, the top of the fixed pulley bracket is hinged to the frame, and wheel axles are arranged at both ends of the horizontal frame of the fixed pulley bracket, and the axle body of the wheel axle is connected with a plurality of fixed pulleys at intervals for rotation, and one end of the fixed pulley is fastened with a toothed pulley piece; two ends of the fixed pulley bracket are respectively hinged to one end of two pinion brackets, and the other ends of the two pinion brackets are respectively hinged One end of two telescopic rods is connected, and the other end of the telescopic rods is hinged to the corresponding end of the horizontal frame of the pulley bracket. The middle part of the pinion gear bracket is rotatably connected with a rotating shaft parallel to the wheel axle, and the positions of the rotating shaft corresponding to the toothed pulley pieces are installed with pinions that can mesh with the corresponding toothed pulley pieces; the lower part of the fixed pulley block is connected with a movable pulley block corresponding to the fixed pulley block through the wire rope of the winch, and the wire rope of the winch enters the fixed pulley block from one side of the fixed pulley block and exits from the other side of the fixed pulley block, and a sling is provided at the bottom of the movable pulley block.

[0008] Preferably, an annular boss is provided at the center of one end of the pinion gear, a plurality of strip holes are provided at intervals on the outer edge surface of the annular boss, and threaded pins are installed at positions of the rotating shaft corresponding to the strip holes.

[0009] Preferably, the position of the rotating shaft body corresponding to the pinion is sleeved with a torsion spring for making the threaded pin be located in the middle position of the corresponding strip hole, one end of the torsion spring is fastened correspondingly to the end surface of the pinion, and the other end of the torsion spring is fastened correspondingly to the shaft body.

[0010] Preferably, the tooth top of the pinion is arc-shaped.

[0011] Preferably, the sling includes a balance bar I, a balance bar II and a sling, the middle position of the rod body of the balance bar I is hinged corresponding to the middle position of the bottom of the movable pulley group, balance bars II are provided at the bottom of both ends of the balance bar I, the middle position of the rod body of the balance bar II is hinged corresponding to the corresponding end of the balance bar I, and slings are provided at both ends of the balance bar II.

[0012] Preferably, the rope end fixing device includes a U-shaped fixing frame, a pin shaft and a connecting block, the closed end of the U-shaped fixing frame is tightly connected to the frame, the open end of the U-shaped fixing frame is connected to one end of the connecting block through the pin shaft, and the other end of the connecting block is tightly connected to the rope end of the winch wire rope.

[0013] Preferably, an annular protrusion is provided at a position of the pin shaft corresponding to the connecting block, and the outer edge surface of the annular protrusion is a spherical surface, and a ring sleeve corresponding to the annular protrusion is nested at a position of the connecting block corresponding to the annular protrusion.

[0014] Preferably, the fixed pulley is rotationally connected to the wheel axle via a bearing.

[0015] Preferably, the axle body between two adjacent fixed pulleys corresponding to the wheel axle is sleeved with a spacer sleeve.

[0016] Preferably, the telescopic rod is an electric push rod.

[0017] Due to the adoption of the above-mentioned technical solution, the present invention has the following beneficial effects:

[0018] The automatic leveling device for a lifting point disclosed in the present invention has a simple structure, is easy to assemble, and has a low production cost. By controlling the shortening of the telescopic rod of the lifting mechanism, the corresponding pinion gear and the toothed pulley piece are meshed, so that the rope feeding speed and the rope discharging speed of the corresponding fixed pulley group are consistent, and then the corresponding sling does not rise, so as to achieve the purpose of leveling the lifting point, and the operation is simple and convenient; an annular boss is provided at the center position of one end of the pinion gear, and a plurality of strip holes are provided at intervals on the outer edge surface of the annular boss, and a threaded pin is installed at the position of the rotating shaft corresponding to the strip hole, that is, the pinion gear can rotate along the strip hole by a certain angle, which is convenient for the engagement of the pinion gear with the toothed pulley piece, and avoids accidental jamming of the tooth top of the pinion gear with the tooth top of the toothed pulley piece;

[0019] The position of the rotating shaft body corresponding to the pinion gear is sleeved with a torsion spring for making the threaded pin be located in the middle position of the corresponding strip hole. One end of the torsion spring is tightly connected to the end surface of the pinion gear, and the other end of the torsion spring is tightly connected to the shaft body of the rotating shaft. That is, the torsion spring can automatically reset the pinion gear after it is disengaged from the toothed pulley, thereby preventing the threaded pin from being at the end of the strip hole and causing the pinion gear to lose its automatic adjustment function. The tooth top of the pinion gear is arc-shaped, which further avoids accidental jamming between the tooth top of the pinion gear and the tooth top of the toothed pulley. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the present invention;

[0021] Figure 2 It is a structural schematic diagram of a fixed pulley block;

[0022] Figure 3 is a side view of the fixed pulley block;

[0023] Figure 4 is a schematic diagram of the structure of the pinion;

[0024] Figure 5 is a side view of the pinion;

[0025] Figure 6 It is a structural schematic diagram of the rope head fixing device;

[0026] Figure 7It is a structural diagram of the spreader;

[0027] Figure 8 Schematic diagram of the winding of winch wire rope.

[0028] In the figure: 1. winch; 2. fixed pulley block; 2-1. fixed pulley bracket; 2-2. fixed pulley; 2-3. toothed pulley; 2-4. pinion; 2-5. pinion bracket; 2-6. axle; 2-7. telescopic rod; 2-8. rotating shaft; 2-9. annular boss; 2-10. strip hole; 2-11. threaded pin; 2-12. torsion spring; 2-13. spacer; 3. frame; 4. redirecting wheel; 5. rope head fixing device; 5-1. U-shaped fixing frame; 5-2. pin shaft; 5-3. connecting block; 5-4. annular protrusion; 5-5. ring sleeve; 6. movable pulley block; 7. sling; 7-1. balance bar I; 7-2. balance bar II; 7-3. sling. DETAILED DESCRIPTION

[0029] The present invention can be explained in detail by the following examples, and the purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention.

[0030] Combined with Figures 1 to 8 , an automatic leveling device for hanging points, comprising a winch 1, and also comprising a lifting mechanism, a frame 3, a redirecting wheel 4 and a rope end fixing device 5; a redirecting wheel 4 is provided at one end of the bottom of the frame 3, and a rope end fixing device 5 is provided at the other end, and two groups of lifting mechanisms are provided at intervals at the bottom of the frame 3 corresponding to the positions between the redirecting wheel 4 and the rope end fixing device 5; according to needs, one group of the two groups of lifting mechanisms is located at the head end of the yacht, and the other group is located at the tail end of the yacht; the winch 1 is located below the redirecting wheel 4 and is correspondingly and tightly connected to the ground, the wire rope of the winch 1 is redirected by the redirecting wheel 4 and is sequentially wound around the lifting mechanism at the bottom of the frame 3 and then correspondingly and tightly connected to the rope end fixing device 5; according to needs, the rope end fixing device 5 comprises a U-shaped fixing frame 5-1, a pin The U-shaped fixing frame 5-1 has a closed end which is fastened to the frame 3, and an open end of the U-shaped fixing frame 5-1 is connected to one end of the connecting block 5-3 through a pin shaft 5-2. The other end of the connecting block 5-3 is fastened to the rope head end of the wire rope of the winch 1. An annular protrusion 5-4 is provided at a position of the shaft body of the pin shaft 5-2 corresponding to the connecting block 5-3, and the outer edge surface of the annular protrusion 5-4 is a spherical surface. A ring sleeve 5-5 which is matched with the annular protrusion 5-4 is nested at a position of the connecting block 5-3 corresponding to the annular protrusion 5-4, that is, the connecting block 5-3 can flexibly adjust its posture through the cooperation of the annular protrusion 5-4 and the ring sleeve 5-5, so as to avoid premature fatigue fracture of the rope head end of the wire rope of the winch 1.

[0031] The lifting mechanism comprises a fixed pulley block 2, a movable pulley block 6 and a sling 7, the fixed pulley block 2 comprises a fixed pulley bracket 2-1, a fixed pulley 2-2, a toothed pulley sheet 2-3, a pinion 2-4 and a pinion bracket 2-5, the fixed pulley bracket 2-1 is a cross-shaped structure, the top of the fixed pulley bracket 2-1 is hinged to the frame 3, and axles 2-6 are provided at both ends of the horizontal frame of the fixed pulley bracket 2-1, and the axle body of the axle 2-6 is rotatably connected with multiple fixed pulleys 2-2 at intervals; as needed, the fixed pulley 2-2 is rotatably connected to the axle 2-6 via a bearing, which can effectively reduce the friction between the fixed pulley 2-2 and the axle 2-6, thereby improving the stability of the lifting operation; the axle 2-6 corresponds to that the shaft bodies between two adjacent fixed pulleys 2-2 are all sleeved with spacer sleeves 2-13, which can effectively avoid the interference between the two adjacent fixed pulleys 2-2; one end of the fixed pulley 2-2 is fastened with a toothed pulley sheet 2-3; the two sides of the bottom of the fixed pulley bracket 2-1 are respectively hinged to one end of two pinion brackets 2-5, and the other ends of the two pinion brackets 2-5 are respectively hinged to one end of two telescopic rods 2-7, and the other ends of the telescopic rods 2-7 are correspondingly hinged to the corresponding ends of the horizontal frame of the pulley bracket 2-1; according to needs, the telescopic rod 2-7 is an electric push rod with a simple structure and easy operation; the middle part of the pinion bracket 2-5 is rotatably connected to the corresponding wheel axle 2-6 A parallel rotating shaft 2-8 is provided, and a pinion 2-4 capable of meshing with the corresponding toothed pulley piece 2-3 is installed at a position corresponding to the toothed pulley piece 2-3 of the rotating shaft 2-8; as needed, an annular boss 2-9 is provided at the center position of one end of the pinion 2-4, and a plurality of strip holes 2-10 are provided at intervals on the outer edge surface of the annular boss 2-9; a threaded pin 2-11 is installed at a position corresponding to the strip hole 2-10 of the rotating shaft 2-8, that is, the pinion 2-4 can rotate a certain angle along the strip hole 2-10, so as to facilitate the meshing of the pinion 2-4 with the toothed pulley piece 2-3 and avoid the accidental jamming of the tooth top of the pinion 2-4 with the tooth top of the toothed pulley piece 2-3; the rotating shaft 2-8 corresponds to The pinion 2-4 is sleeved with a torsion spring 2-12 for positioning the threaded pin 2-11 in the middle of the corresponding strip hole 2-10. One end of the torsion spring 2-12 is correspondingly and tightly connected to the end face of the pinion 2-4, and the other end of the torsion spring 2-12 is correspondingly and tightly connected to the shaft body of the rotating shaft 2-8, that is, the torsion spring 2-12 can automatically reset the pinion 2-4 after it is disengaged from the toothed pulley 2-3, thereby preventing the threaded pin 2-11 from being at the end of the strip hole 2-10 and causing the pinion 2-4 to lose its automatic adjustment function; the tooth top of the pinion 2-4 is in an arc shape, further preventing the tooth top of the pinion 2-4 from accidentally hitting the tooth top of the toothed pulley 2-3;

[0032] The fixed pulley block 2 is connected to a movable pulley block 6 corresponding to the fixed pulley block 2 through the wire rope of the winch 1, and the wire rope of the winch 1 enters the fixed pulley block 2 from one side and exits the fixed pulley block 2 from the other side. A lifting device 7 is provided at the bottom of the movable pulley block 6, that is, when lifting the yacht, a set of telescopic rods 2-7 of the lifting mechanism can be shortened first, driving the corresponding pinion bracket 2-5 to move up, until the corresponding pinion 2-4 is meshed with the toothed pulley piece 2-3, and the winch is started. The winch 1 is turned on and off, and the pinion 2-4 is meshed with the toothed pulley 2-3, so that the rotation speed of the corresponding fixed pulley 2-2 is equal, that is, the rope feeding speed of the corresponding fixed pulley block 2 is consistent with the rope outlet speed, so that the corresponding movable pulley block 6 does not rise, and the movable pulley block 6 of the other lifting mechanism drives the corresponding sling 7 to rise until the sling 7 contacts with the yacht hull and bears a certain load, and then the winch 1 is turned off, the shortened telescopic rod 2-7 is controlled to reset, and the telescopic rod of the lifting mechanism that bears the load is controlled. 2-7 is shortened until the corresponding pinion 2-4 is meshed with the toothed pulley 2-3, and then the winch 1 is started. Similarly, the sling 7 of the unloaded lifting mechanism is raised until the unloaded sling 7 contacts the yacht hull and bears a certain load, while ensuring that the yacht is in a horizontal state. The winch 1 is closed again, and the shortened telescopic rod 2-7 is controlled to reset, and the winch 1 can be started to perform the overall lifting operation of the yacht; in addition, the sling 7 includes a balance bar I 7-1, a balance bar II 7-2 and The sling 7-3, the middle position of the rod body of the balance rod I 7-1 is hinged to the middle position of the bottom of the movable pulley group 6, and the bottoms of both ends of the balance rod I 7-1 are provided with balance rods II 7-2, the middle position of the rod body of the balance rod II 7-2 is hinged to the corresponding ends of the balance rod I 7-1, and the two ends of the balance rod II 7-2 are provided with slings 7-3, that is, the yacht hull can be tied up by the sling 7-3, and the automatic adjustment ability of the sling 7 is improved by the balance rod I 7-1 and the balance rod II 7-2.

[0033] By implementing the automatic leveling device for lifting points of the present invention, when lifting a yacht, the telescopic rod 2-7 of one set of lifting mechanisms can be shortened first, driving the corresponding pinion bracket 2-5 to move upward until the corresponding pinion 2-4 is meshed with the toothed pulley piece 2-3, and the winch 1 is started. Since the pinion 2-4 is meshed with the toothed pulley piece 2-3, the rotation speeds of the corresponding fixed pulleys 2-2 are equal, that is, the rope feed speed and the rope discharge speed of the fixed pulley block 2 are consistent, so that the corresponding movable pulley block 6 does not rise, while the movable pulley block 6 of the other set of lifting mechanisms drives the corresponding sling 7 to rise until the sling 7 contacts the yacht hull and bears a certain load. The load is then removed, and the winch 1 is closed to control the shortened telescopic rod 2-7 to reset, and the telescopic rod 2-7 of a group of lifting mechanisms that bear the load is shortened until the corresponding pinion 2-4 is meshed with the toothed pulley 2-3, and then the winch 1 is started. Similarly, the sling 7 of the unloaded lifting mechanism is raised until the unloaded sling 7 contacts the yacht hull and bears a certain load, while ensuring that the yacht is in a horizontal state. The winch 1 is closed again to control the shortened telescopic rod 2-7 to reset, and then the winch 1 can be started to perform the overall lifting operation of the yacht. During the overall lifting operation of the yacht, it is not allowed to operate the telescopic rod 2-7.

[0034] Parts of the present invention not described in detail are prior art.

Claims

1. A hanging point automatic leveling device, comprising a winch (1), characterized in that: It also comprises a lifting mechanism, a frame (3), a redirecting wheel (4) and a rope end fixing device (5); a redirecting wheel (4) is provided at one end of the bottom of the frame (3), and a rope end fixing device (5) is provided at the other end; two sets of lifting mechanisms are provided at intervals at the bottom of the frame (3) corresponding to the position between the redirecting wheel (4) and the rope end fixing device (5); the hoist (1) is located below the redirecting wheel (4) and is correspondingly and firmly connected to the ground; the steel wire rope of the hoist (1) is redirected by the redirecting wheel (4) and is sequentially wound around the two sets of lifting mechanisms at the bottom of the frame (3) and then is correspondingly and firmly connected to the rope end fixing device (5); The lifting mechanism comprises a fixed pulley block (2), a movable pulley block (6) and a lifting device (7); the fixed pulley block (2) comprises a fixed pulley bracket (2-1), a fixed pulley (2-2), a toothed pulley sheet (2-3), a pinion (2-4) and a pinion bracket (2-5); the fixed pulley bracket (2-1) is in a cross-shaped structure; the top of the fixed pulley bracket (2-1) is hinged to the frame (3); both ends of the horizontal frame of the fixed pulley bracket (2-1) are provided with axles (2-6); the shaft body of the axle (2-6) is connected to a plurality of fixed pulleys (2-2) in rotation at intervals; one end of the fixed pulley (2-2) is fixedly connected to the toothed pulley sheet (2-3); two ends of the bottom of the fixed pulley bracket (2-1) are hinged to one end of two pinion brackets (2-5); the two pinion brackets (2-5) are hinged to one end of the two pinion brackets (2-5); The other end of the fixed pulley block (2) is hinged to one end of two telescopic rods (2-7), the other end of the telescopic rods (2-7) is hinged to the corresponding end of the horizontal frame of the pulley bracket (2-1), the middle part of the pinion bracket (2-5) is rotatably connected to a rotating shaft (2-8) parallel to the wheel shaft (2-6), and the position of the rotating shaft (2-8) corresponding to the toothed pulley sheet (2-3) is installed with a pinion (2-4) capable of meshing with the corresponding toothed pulley sheet (2-3); the lower part of the fixed pulley block (2) is connected to a movable pulley block (6) corresponding to the fixed pulley block (2) through the steel wire rope of the winch (1), and the steel wire rope of the winch (1) enters the fixed pulley block (2) from one side and exits from the other side, and a sling (7) is provided at the bottom of the movable pulley block (6).

2. The automatic leveling device for hanging points according to claim 1, characterized in that: An annular boss (2-9) is provided at the center of one end of the pinion gear (2-4), a plurality of strip holes (2-10) are provided at intervals on the outer edge surface of the annular boss (2-9), and a threaded pin (2-11) is installed at a position of the rotating shaft (2-8) corresponding to the strip holes (2-10).

3. The automatic leveling device for hanging points according to claim 2, characterized in that: A torsion spring (2-12) is sleeved at a position of the shaft body of the rotating shaft (2-8) corresponding to the pinion gear (2-4) and is used to locate the threaded pin (2-11) in the middle position of the corresponding strip hole (2-10); one end of the torsion spring (2-12) is fastened and connected to the end surface of the pinion gear (2-4) in correspondence, and the other end of the torsion spring (2-12) is fastened and connected to the shaft body of the rotating shaft (2-8) in correspondence.

4. The automatic leveling device for hanging points according to claim 1, characterized in that: The tooth top of the pinion (2-4) is in an arc shape.

5. The automatic leveling device for hanging points according to claim 1, characterized in that: The sling (7) comprises a balance bar I (7-1), a balance bar II (7-2) and a sling (7-3); the middle position of the bar body of the balance bar I (7-1) is hinged to the middle position of the bottom of the movable pulley block (6); balance bars II (7-2) are provided at the bottom of both ends of the balance bar I (7-1); the middle position of the bar body of the balance bar II (7-2) is hinged to the corresponding end of the balance bar I (7-1); and slings (7-3) are provided at both ends of the balance bar II (7-2).

6. The automatic leveling device for hanging points according to claim 1, characterized in that: The rope end fixing device (5) comprises a U-shaped fixing frame (5-1), a pin shaft (5-2) and a connecting block (5-3); the closed end of the U-shaped fixing frame (5-1) is correspondingly and firmly connected to the frame (3); the open end of the U-shaped fixing frame (5-1) is connected to one end of the connecting block (5-3) via the pin shaft (5-2); and the other end of the connecting block (5-3) is correspondingly and firmly connected to the rope end of the steel wire rope of the winch (1).

7. The automatic leveling device for suspension points according to claim 6, characterized in that: An annular protrusion (5-4) is provided at a position of the shaft of the pin shaft (5-2) corresponding to the connecting block (5-3), and the outer edge surface of the annular protrusion (5-4) is a spherical surface. A ring sleeve (5-5) matching the annular protrusion (5-4) is nested at a position of the connecting block (5-3) corresponding to the annular protrusion (5-4).

8. The automatic leveling device for hanging points according to claim 1, characterized in that: The fixed pulley (2-2) is rotationally connected to the wheel shaft (2-6) via a bearing.

9. The automatic leveling device for hanging points according to claim 1, characterized in that: The axle bodies of the wheel axles (2-6) corresponding to two adjacent fixed pulleys (2-2) are all sleeved with spacer sleeves (2-13).

10. The automatic leveling device for hanging points according to claim 1, characterized in that: The telescopic rod (2-7) is an electric push rod.

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