A fully automatic start-stop protection system and control method for a grab ship unloader

Abstract

The present invention discloses a fully automatic start-stop protection system and control method for a grab ship unloader, including a direction adjustment structure and a stable triangular frame. The bottom of the stable triangular frame is fixedly connected to the top of the direction adjustment structure. The top of the stable triangular frame is provided with a first rotating rod, a second rotating rod, a third rotating rod, a fourth rotating rod, a fifth rotating rod and a sixth rotating rod. One ends of the first rotating rod, the third rotating rod and the fourth rotating rod are all rotatably connected to the stable triangular frame. The other end of the fourth rotating rod is rotatably connected to both the fifth rotating rod and the sixth rotating rod. The top of the stable triangular frame is provided with a support rod and a counterweight rod. Two ends of the support rod are respectively hinged to the third rotating rod and the fourth rotating rod. Two ends of the counterweight rod are respectively rotatably connected to the fifth rotating rod and the sixth rotating rod. The grab ship unloader is stabilized by the mutual cooperation between the rotating rods and by adjusting the weight and angle of the counterweight box, so as to avoid shaking when lifting goods and protect the overall structure.

Description

Technical Field

[0001] The present invention relates to a start-stop protection system, and particularly to a fully automatic start-stop protection system and control method for a grab ship unloader. Background Art

[0002] With the development of global logistics, the application of ship unloaders has become more and more extensive. Ship unloaders have been equipped in large river basins in cities, and the throughput of major ports in our country has also been on the rise. In order to improve the core competitiveness of port enterprises and adapt to the development trend of specialization, large-scale and high-efficiency of port bulk cargo handling equipment, countries around the world are vigorously researching and applying information technology, automation and intelligent technology to build and transform bulk cargo terminals, and developing new bulk cargo handling and conveying equipment. Among them, the application of grab ship unloaders is the most extensive. However, the existing grab ship unloaders still have some defects:

[0003] 1. When a traditional grab ship unloader suddenly hoists a very heavy cargo, it directly starts the motor through electricity to drive the wire traction rope to pull the grab to hoist the cargo. At the moment when the ship unloader is subjected to the weight of the cargo, it will produce a slight inclination. Although it is not obvious, in the long run, it will cause irreversible damage to the overall structure of the grab ship unloader and reduce the service life of the equipment;

[0004] 2. When a traditional grab ship unloader uses wires for power traction, the problem of wire skipping often occurs. In severe cases, the wire may even break, which poses a great safety hazard. Moreover, the equipment is huge, and once a failure occurs, it cannot be checked in time, affecting the efficiency;

[0005] 3. In some smaller ports, the land location is limited. However, if you want to increase the throughput of the port, multiple devices need to work together. Many grab ship unloaders cannot change the direction and working position, and cannot achieve the maximum utilization rate.

[0006] Therefore, it is very necessary to design a fully automatic start-stop protection system and control method for a grab ship unloader. Summary of the Invention

[0007] The purpose of the present invention is to provide a fully automatic start-stop protection system and control method for a grab ship unloader, so as to solve the problems that when the ship unloader suddenly lifts the cargo, the imbalance of the weights at both ends will cause the overall inclination of the ship unloader, and the wires used for traction and lifting of the cargo often skip.

[0008] To achieve the above object, the present invention provides the following technical solution: A fully automatic start-stop protection system for a grab ship unloader, including a direction adjustment structure and a stable tripod. The bottom of the stable tripod is fixedly connected to the top of the direction adjustment structure. The top of the stable tripod is provided with a first rotating rod, a second rotating rod, a third rotating rod, a fourth rotating rod, a fifth rotating rod, and a sixth rotating rod. One end of the first rotating rod, the third rotating rod, and the fourth rotating rod is rotatably connected to the stable tripod, and the other end of the fourth rotating rod is rotatably connected to both the fifth rotating rod and the sixth rotating rod;

[0009] The top of the stable tripod is provided with a support rod, a counterweight rod, and a hydraulic telescopic rod. Both ends of the support rod are hinged to the third rotating rod and the fourth rotating rod respectively. Both ends of the counterweight rod are rotatably connected to the fifth rotating rod and the sixth rotating rod respectively. Both ends of the hydraulic telescopic rod are fixedly connected to the counterweight rod and the stable tripod respectively;

[0010] The direction adjustment structure includes a steering base, a triangular steering platform, a columnar turntable, and a support plate. The bottom of the steering base is rotatably connected to the top of the triangular steering platform. The outside of the columnar turntable is fixedly connected to the triangular steering platform. The tops of the three support plates are rotatably connected to the bottom of the columnar turntable;

[0011] A steel wire is provided at the top of the support rod, and both ends of the steel wire are clamped to the second rotating rod and the counterweight rod respectively;

[0012] A steel wire anti-jumping structure is provided at the top of the support rod, and the steel wire anti-jumping structure is rotatably connected to the fifth rotating rod.

[0013] As a preferred technical solution of the present invention, a counterweight box is provided at one end of the counterweight rod, and the counterweight box is fixedly connected to the counterweight rod.

[0014] As a preferred technical solution of the present invention, a plurality of roller groups are provided at the bottom of each support plate, and the tops of several roller groups are fixedly connected to the bottom of the support plate.

[0015] As a preferred technical solution of the present invention, the steel wire anti-jumping structure includes a rotating rod, a steel wire roller, a first card slot, a support rod, a micro motion sensor, and a steel wire anti-jumping rod. The rotating rod is rotatably connected to the fifth rotating rod. The steel wire roller is fixedly sleeved on the rotating rod. The steel wire is movably clamped to the first card slot. One end of the two support rods is fixedly connected to the rotating rod, and the other end is fixedly connected to the steel wire anti-jumping rod through a spring. The micro motion sensor is clamped to the steel wire anti-jumping rod.

[0016] As a preferred technical solution of the present invention, a steel wire speed limit box and a speed limit wheel are provided on the side of the first rotating rod away from the direction adjustment structure. The speed limit wheel is rotatably connected to the first rotating rod, and the speed limit box is fixedly connected to the first rotating rod.

[0017] As a preferred technical solution of the present invention, a steel wire limiting rod is provided on one side of the speed limiting wheel, and the steel wire limiting rod is fixedly connected to the tops of two first rotating rods.

[0018] As a preferred technical solution of the present invention, the steering base and the columnar turntable are each controlled by a separate motor for their rotation speed and angle.

[0019] As a preferred technical solution of the present invention, the diameter of the steel wire matches the width of the first card slot.

[0020] As a preferred technical solution of the present invention, a second card slot is provided at one end of the steel wire limiting rod away from the first rotating rod.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] 1. Before lifting the goods of a ship, the present invention adjusts the angles of the counterweight box and the counterweight rod. By the hinge between multiple rotating rods, the heights of the first rotating rod and the second rotating rod are changed, so that the grab ship unloader can adapt to goods of different weights, and the overall structure of the grab ship unloader will not be damaged due to the sudden increase in the weight of the goods. Moreover, the grab ship unloader designed in this way has a compact structure, strong practicability, and can be mass-produced to adapt to the high-speed logistics environment; and the rear counterweight box also serves as a part of the power source, using the lever principle to lift the goods in the front, saving power, being environmentally friendly and efficient.

[0023] 2. By sequentially changing the support plate, the columnar turntable, the triangular steering platform and the steering base, the present invention can arbitrarily change the working range of the grab ship unloader, improve the working efficiency, and set multiple roller groups to improve the error tolerance rate. When one is damaged, the others can still work normally.

[0024] 3. By providing a rotatable steel wire roller, the present invention reduces the friction on the steel wire, improves the service life of the steel wire, and clamps the steel wire in the first card slot to prevent it from jumping out. Even if it jumps out, it can touch the upper steel wire anti-jump rod and be blocked by the steel wire anti-jump rod. At the same time, it touches the micro motion sensor to send an alarm to the operator, avoiding irreversible damage to the grab ship unloader when it is damaged, and improving the maintenance efficiency of the grab ship unloader. It is not necessary to check every place to confirm the exact location of the damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is the overall schematic diagram of the present invention;

[0026] Figure 2 is the front cross-sectional view of the present invention;

[0027] Figure 3For the present invention Figure 1 The enlarged view of part A shown in

[0028] Figure 4 For the present invention Figure 1 The enlarged view of part B shown in

[0029] Figure 5 For the present invention Figure 1 The enlarged view of part C shown in

[0030] Figure 6 For the present invention Figure 4 The front view in the E-E direction shown in

[0031] In the figure: 1. Direction adjustment structure; 11. Steering base; 12. Triangular steering platform; 13. Columnar turntable; 14. Support plate; 15. Roller group; 2. Stable tripod; 21. First rotating rod; 22. Second rotating rod; 23. Third rotating rod; 24. Fourth rotating rod; 25. Fifth rotating rod; 251. Support rod; 26. Sixth rotating rod; 3. Counterweight rod; 31. Counterweight box; 32. Hydraulic telescopic rod; 4. Steel wire; 5. Steel wire anti-jumping structure; 51. Rotating rod; 52. Steel wire roller; 53. First card slot; 54. Support rod; 55. Micro motion sensor; 56. Steel wire anti-jumping rod; 6. Steel wire speed limit box; 61. Speed limit wheel; 62. Steel wire limiting rod; 63. Second card slot. Specific embodiments

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] Please refer to Figures 1-6 , the present invention provides a technical solution for a fully automatic start-stop protection system and control method for a grab ship unloader:

[0034] Embodiment 1:

[0035] According to Figures 1-2As shown in the figure, in actual use, a fully automatic start-stop protection system and control method for a grab ship unloader of the present invention includes a direction adjustment structure 1 and a stable tripod 2, and is characterized in that: the bottom of the stable tripod 2 is fixedly connected to the top of the direction adjustment structure 1, and the top of the stable tripod 2 is provided with a first rotating rod 21, a second rotating rod 22, a third rotating rod 23, a fourth rotating rod 24, a fifth rotating rod 25 and a sixth rotating rod 26. One ends of the first rotating rod 21, the third rotating rod 23 and the fourth rotating rod 24 are all rotatably connected to the stable tripod 2, and the other end of the fourth rotating rod 24 is rotatably connected to both the fifth rotating rod 25 and the sixth rotating rod 26;

[0036] The top of the stable tripod 2 is provided with a support rod 251, a counterweight rod 3 and a hydraulic telescopic rod 32. Both ends of the support rod 251 are hinged to the third rotating rod 23 and the fourth rotating rod 24 respectively. Both ends of the counterweight rod 3 are rotatably connected to the fifth rotating rod 25 and the sixth rotating rod 26 respectively. Both ends of the hydraulic telescopic rod 32 are fixedly connected to the counterweight rod 3 and the stable tripod 2 respectively;

[0037] One end of the counterweight rod 3 is provided with a counterweight box 31, and the counterweight box 31 is fixedly connected to the counterweight rod 3.

[0038] In actual use, for a fully automatic start-stop protection system and control method for a grab ship unloader of the present invention, before lifting the goods of a ship, the angles of the counterweight box 31 and the counterweight rod 3 are adjusted. Through the hinges between multiple rotating rods, the heights of the first rotating rod 21 and the second rotating rod 22 are changed, so that the grab ship unloader can adapt to goods of different weights, and the overall structure of the grab ship unloader will not be damaged due to the sudden increase in the weight of the goods. Moreover, the grab ship unloader designed in this way has a compact structure, strong practicability, and can be mass-produced to adapt to the high-speed logistics environment; and the rear counterweight box 31 also serves as a part of the power source, using the lever principle to lift the goods in the front, saving power, being environmentally friendly and efficient.

[0039] Embodiment 2:

[0040] On the basis of Embodiment 1, as Figure 3 shown, a fully automatic start-stop protection system and control method for a grab ship unloader, the direction adjustment structure 1 includes a steering base 11, a triangular steering platform 12, a columnar turntable 13 and a support plate 14. The bottom of the steering base 11 is rotatably connected to the top of the triangular steering platform 12. The outside of the columnar turntable 13 is fixedly connected to the triangular steering platform 12. The tops of the three support plates 14 are all rotatably connected to the bottom of the columnar turntable 13.

[0041] Multiple roller groups 15 are provided at the bottoms of the support plates 14, and the tops of several roller groups 15 are fixedly connected to the bottoms of the support plates 14.

[0042] Both the steering base 11 and the columnar turntable 13 are controlled by separate motors for their rotational speed and angle.

[0043] During specific use, for a fully automatic start-stop protection system and control method of a grab ship unloader according to the present invention, when unloading a ship at another angle is required, the support plate 14, the columnar turntable 13, the triangular steering platform 12, and the steering base 11 need to be changed in sequence, so that the working range of the grab ship unloader can be arbitrarily changed, improving work efficiency. Additionally, multiple roller groups 15 are provided to increase the fault tolerance rate, so that when one is damaged, the others can still work normally.

[0044] Embodiment Three:

[0045] Based on Embodiment Two, as Figures 4-6 shown, for a fully automatic start-stop protection system and control method of a grab ship unloader, a steel wire 4 is provided at the top of the support rod 251, and both ends of the steel wire 4 are respectively clamped with the second rotating rod 22 and the counterweight rod 3;

[0046] A steel wire anti-jumping structure 5 is provided at the top of the support rod 251, and the steel wire anti-jumping structure 5 is rotatably connected to the fifth rotating rod 25.

[0047] The steel wire anti-jumping structure 5 includes a rotating rod 51, a steel wire roller 52, a first card slot 53, a support rod 54, a micro motion sensor 55, and a steel wire anti-jumping rod 56. The rotating rod 51 is rotatably connected to the fifth rotating rod 25. The steel wire roller 52 is fixedly sleeved on the rotating rod 51. The steel wire 4 is movably clamped with the first card slot 53. One end of each of the two support rods 54 is fixedly connected to the rotating rod 51, and the other end is fixedly connected to the steel wire anti-jumping rod 56 through a spring. The micro motion sensor 55 is clamped with the steel wire anti-jumping rod 56.

[0048] A steel wire speed limiting box 6 and a speed limiting wheel 61 are provided on one side of the first rotating rod 21 away from the direction adjusting structure 1. The speed limiting wheel 61 is rotatably connected to the first rotating rod 21, and the speed limiting box 6 is fixedly connected to the first rotating rod 21.

[0049] A steel wire limiting rod 62 is provided on one side of the speed limiting wheel 61. The steel wire limiting rod 62 is fixedly connected to the first rotating rod 21.

[0050] A second card slot 63 is opened at one end of the steel wire limiting rod 62 away from the first rotating rod 21.

[0051] The diameter of the steel wire 4 matches the width of the first card slot 53.

[0052] During specific use, for the full-automatic start-stop protection system and control method of a grab unloader of the present invention, when the steel wire 4 slides as the goods are lifted, the steel wire roller 52 will rotate accordingly, reducing the friction on the steel wire 4, increasing the service life of the steel wire 4, and clamping the steel wire 4 in the first card slot 53 to prevent it from jumping out. Even if it jumps out, it can touch the upper steel wire anti-jump rod 56 and be blocked by the steel wire anti-jump rod 56. At the same time, the micro motion sensor 55 is triggered to send an alarm to the operator, avoiding irreversible damage to the grab unloader when it is damaged during use, improving the maintenance efficiency of the grab unloader, and being able to confirm the exact location of the damage without having to check every part;

[0053] A speed limit structure is provided above the goods to prevent damage to the overall structure caused by too fast lowering and lifting, and to increase the service life of the grab unloader.

[0054] In the description of the present invention, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0055] In the present invention, unless otherwise clearly specified and limited, for example, it can be fixedly connected, detachably connected, or integrated; it can be mechanically connected, electrically connected; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. Unless otherwise clearly limited, for those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0056] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fully automatic start-stop protection system for a grab ship unloader, comprising a direction adjustment structure (1) and a stable tripod (2), characterized in that: The bottom of the stable tripod (2) is fixedly connected to the top of the direction adjustment structure (1). The top of the stable tripod (2) is provided with a first rotating rod (21), a second rotating rod (22), a third rotating rod (23), a fourth rotating rod (24), a fifth rotating rod (25) and a sixth rotating rod (26). One end of each of the first rotating rod (21), the third rotating rod (23) and the fourth rotating rod (24) is rotatably connected to the stable tripod (2). The other end of the fourth rotating rod (24) is rotatably connected to both the fifth rotating rod (25) and the sixth rotating rod (26). The top of the stable tripod (2) is provided with a support rod (251), a counterweight rod (3) and a hydraulic telescopic rod (32). Both ends of the support rod (251) are hinged to the third rotating rod (23) and the fourth rotating rod (24) respectively. Both ends of the counterweight rod (3) are rotatably connected to the fifth rotating rod (25) and the sixth rotating rod (26) respectively. Both ends of the hydraulic telescopic rod (32) are fixedly connected to the counterweight rod (3) and the stable tripod (2) respectively. The direction adjustment structure (1) includes a steering base (11), a triangular steering platform (12), a columnar turntable (13) and a support plate (14). The bottom of the steering base (11) is rotatably connected to the top of the triangular steering platform (12). The outer side of the columnar turntable (13) is fixedly connected to the triangular steering platform (12). The tops of the three support plates (14) are all rotatably connected to the bottom of the columnar turntable (13). A steel wire (4) is provided at the top of the support rod (251). Both ends of the steel wire (4) are clamped to the second rotating rod (22) and the counterweight rod (3) respectively. A steel wire anti-jumping structure (5) is provided at the top of the support rod (251). The steel wire anti-jumping structure (5) is rotatably connected to the fifth rotating rod (25).

2. The fully automatic start-stop protection system for a grab unloader according to claim 1, characterized in that: A counterweight box (31) is provided at one end of the counterweight rod (3). The counterweight box (31) is fixedly connected to the counterweight rod (3).

3. The fully automatic start-stop protection system for a grab ship unloader according to claim 1, characterized in that: A plurality of roller groups (15) are provided at the bottom of each support plate (14). The tops of several roller groups (15) are all fixedly connected to the bottom of the support plate (14).

4. The fully automatic start-stop protection system of a grab unloader according to claim 1, characterized in that: The steel wire anti-jumping structure (5) includes a rotating rod (51), a steel wire clamping roller (52), a first card slot (53), a support rod (54), a micro motion sensor (55) and a steel wire anti-jumping rod (56). The rotating rod (51) is rotatably connected to the fifth rotating rod (25). The steel wire clamping roller (52) is fixedly sleeved on the rotating rod (51). The steel wire (4) is movably clamped to the first card slot (53). One end of each of the two support rods (54) is fixedly connected to the rotating rod (51), and the other end is fixedly connected to the steel wire anti-jumping rod (56) through a spring. The micro motion sensor (55) is clamped to the steel wire anti-jumping rod (56).

5. The fully automatic start-stop protection system of a grab ship unloader according to claim 1, characterized in that: A steel wire speed limiting box (6) and a speed limiting wheel (61) are provided on the side of the first rotating rod (21) away from the direction adjustment structure (1). The speed limiting wheel (61) is rotatably connected to the first rotating rod (21). The speed limiting box (6) is fixedly connected to the first rotating rod (21).

6. The fully automatic start-stop protection system for a grab unloader according to claim 5, characterized in that: On one side of the speed-limiting wheel (61), there is a steel wire limiting rod (62), and the steel wire limiting rod (62) is fixedly connected to the tops of two first rotating rods (21).

7. The fully automatic start-stop protection system for a grab unloader according to claim 6, characterized in that: One end of the steel wire limiting rod (62) away from the first rotating rod (21) is provided with a second card slot (63).

8. The fully automatic start-stop protection system for a grab ship unloader according to claim 1, characterized in that: The steering base (11) and the columnar turntable (13) are each controlled by a separate motor for their rotation speed and angle.

9. The full-automatic start-stop protection system of a grab unloader according to claim 4, characterized in that: The diameter of the steel wire (4) matches the width of the first card slot (53).

10. A control method for a fully automatic start-stop protection system of a grab unloader using the system described in any one of claims 1-9 above, characterized in that It includes the following steps: The cargo ship docks, and the weight of the goods on the ship is counted. Change the angle between the counterweight rod and the grab ship unloader, and change the weight of the counterweight box, so that the grab ship unloader will not tilt due to the sudden increase in the weight of the goods when starting to hoist. Start hoisting the goods. Change the hoisting direction by adjusting the angle of the direction adjustment structure to hoist the goods at another location. Before completing the hoisting of the last piece of goods, change the angle between the counterweight rod and the grab ship unloader and the weight of the counterweight box, so that the whole can still remain balanced after the hoisting of the last piece of goods is completed.

Images