A container lifting crane

Abstract

The present invention relates to the technical field of cranes, and in particular to a container lifting crane. Two groups of limit holes are arranged at the bottom of the hanging box, a linear motion driving device is installed at the center position of the bottom of the hanging box, a rotating frame is horizontally installed on the top of the linear motion driving device, a transmission rod is arranged on the rotating frame, a group of transmission wheels are sleeved on the transmission rod, rotating bearings are arranged at both ends of the transmission rod, the rotating bearings are installed on the rotating frame, a servo motor is installed on either side of both sides of the transmission rod, the servo motor is installed on the rotating frame, the rotating shaft of the servo motor is fixedly connected to the transmission rod, and a transmission belt is installed on the transmission wheel. The technical problem that the coal container is tilted first and then loaded when loading, and it is in a slope shape after being leveled, the braking inertia of the vehicle in land transportation is easy to cause the coal blocks to collide with the box door, there is a transportation risk, the box door is easy to be damaged for a long time, the safe transportation of goods is affected and the maintenance cost is increased, and the transportation company is brought into economic pressure and operational troubles.

Description

Technical Field

[0001] The present invention relates to the technical field of cranes, and in particular to a container lifting crane. Background Art

[0002] When loading coal into a container, the container is usually tilted appropriately first, and then the coal is loaded into the container from the yard or conveyor belt in an orderly manner with the help of professional and specific loading equipment. As a large amount of coal is continuously poured in, the coal slowly accumulates in the container. However, when the container is laid flat, the coal will be distributed in a slope. This sloped coal is very likely to cause the center of gravity of the container to be unstable during subsequent land transportation. Once the center of gravity is unstable, the risk factor during transportation will be greatly increased.

[0003] Application No.: 201310573937.3 discloses a planar two-degree-of-freedom nine-rod servo-driven container reach-lift crane. The invention realizes operations such as clamping, lifting, and transporting containers under the joint drive of the boom lifting mechanism and the boom telescopic mechanism, and has the advantages of small motion inertia, flexible trajectory output, and high precision.

[0004] Application No.: 201120472318.1 discloses a reach-lift crane. The reach-lift crane of this structure integrates a cab and a front frame, reduces the appearance size of the vehicle, and makes the whole vehicle structure of the reach-lift crane more compact.

[0005] Application No.: 201210035201.6 discloses an off-road container reach stacker, which can meet the performance index requirements of ordinary container reach stackers and have the performance requirements of container handling and loading and unloading under harsh outdoor environmental conditions. The existing technology cannot solve the above problems.

[0006] During the long journey of land transportation, the transport vehicles will inevitably brake. Every time the brakes are applied, inertia will be generated, and this inertia will cause the coal blocks inside the container, which are originally unstable, to start moving. Driven by inertia, the coal blocks in the container will continue to collide with the container door. If this situation continues for a long time, this strong collision will easily cause serious damage to the container door. Once the container door is damaged, it will not only affect the safe transportation of the goods, exposing the goods to the risk of leakage and damage, but also increase the subsequent maintenance costs, bringing economic pressure and operational troubles to the transportation company. Summary of the invention

[0007] The purpose of the present invention is to provide a container lifting crane, which solves the technical problems that when loading coal containers, they are tilted first and then loaded, and then they become sloped after being leveled. The braking inertia of vehicles during land transportation can easily cause coal blocks to collide with the container door, posing transportation risks, and the container door is easily damaged for a long time, affecting the safe transportation of goods and increasing maintenance costs, bringing economic pressure and operational troubles to transportation companies.

[0008] The above technical objectives of the present invention are achieved through the following technical solutions:

[0009] A container lifting crane comprises a crane body and a hanging box, characterized in that two groups of limiting holes are arranged at the bottom of the hanging box, a linear motion drive device is installed at the center position of the bottom of the hanging box, a rotating frame is horizontally installed on the top of the linear motion drive device, a transmission rod is arranged on the rotating frame, a group of transmission wheels are sleeved on the transmission rod, rotating bearings are arranged at both ends of the transmission rod, the rotating bearings are installed on the rotating frame, a servo motor is installed on either side of both sides of the transmission rod, the servo motor is installed on the rotating frame, the rotating shaft of the servo motor is fixedly connected to the transmission rod, a transmission belt is installed on the transmission wheel, a container lifting frame is installed at the bottom of the hanging box, and a flat plate is installed on the container lifting frame. Both ends of the transmission belt pass through the limiting holes and are fixedly connected to the flat plate.

[0010] Preferably, if the transmission wheel is a gear, the transmission belt is a rack, and if the transmission wheel is a sprocket, the transmission belt is a chain.

[0011] Preferably, a group of through holes are provided at the bottom of the hanging box, and limit clamps are installed in the through holes. The bottom of the limit clamps protrudes out of the bottom of the hanging box, and a group of automatic lifting release parts are provided on the flat plate, and the automatic lifting release parts are directly below the limit clamps.

[0012] Preferably, the limit clamping member includes a sleeve member and a spring, a pair of limit through holes are installed opposite to each other in the sleeve member, a spring is installed in the limit through holes, a pin is installed in the spring, a slope support block is installed at one end of the pin close to the automatic lifting release member, the slope support block slides in the limit through hole, the slopes of the slope support blocks are opposite to each other and the slopes are in an "eight" shape, and a limit block is installed at one end of the pin away from the automatic lifting release member.

[0013] Preferably, the automatic lifting release component includes a truncated table, a sliding rod, an inverted truncated table ring and a limit table. One end of the sliding rod is fixedly connected to the bottom of the truncated table. The inverted truncated table ring is arranged on the sliding rod. The inverted truncated table ring slides on the sliding rod. The other end of the sliding rod is fixedly connected to the bottom of the truncated table.

[0014] Preferably, the flat plate is an iron piece, and an electromagnet is installed at the bottom of the hanging box. When the electromagnet is energized, the flat plate is adsorbed on the bottom of the hanging box.

[0015] Preferably, the linear motion driving device is any one of an electric push rod, a pneumatic cylinder and a hydraulic cylinder.

[0016] In summary, the present invention has the following beneficial effects:

[0017] The present invention realizes the preliminary leveling of the sloped coal inside the container during loading operations, ensuring the stability and uniformity of the coal during the leveling process. It prevents the internal coal from hitting the container door during land transportation, ensures the smooth progress of the transportation process and the safety of equipment and goods, and also realizes the function of dumping coal. Compared with the prior art, the present invention not only ensures the safety of land transportation, but also has the function of dumping coal, further improving the operation efficiency. In practical applications, it makes the loading and unloading of materials such as coal more convenient and efficient, and improves the overall work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view of the present invention;

[0019] Figure 2 It is the internal structure diagram of the hanging box of the present invention;

[0020] Figure 3 It is a diagram of the internal structure of the hanging box when the present invention is locked and hoisted;

[0021] Figure 4 is a three-dimensional diagram of the servo motor of the present invention ready for operation;

[0022] Figure 5 It is a structural diagram of the position-limiting clamping member and the jacking automatic release member of the present invention;

[0023] Figure 6 It is a side view of the hanging box and the limiting clamping member of the present invention.

[0024] In the figure, 1. crane body; 121. electromagnet; 2. hanging box; 21. through hole; 22. limit clamp; 23. automatic release part for lifting; 3. limit hole; 4. linear motion drive device; 40. sleeve; 41. limit through hole; 42. spring; 43. pin; 44. slope block; 45. limit block; 5. horizontal installation rotating frame; 50. round table; 51. slide bar; 52. inverted round table ring; 53. limit table; 6. transmission rod; 7. transmission wheel; 8. rotating bearing; 9. servo motor; 10. transmission belt; 11. container lifting frame; 12. flat plate. DETAILED DESCRIPTION

[0025] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0026] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

[0027] In one embodiment, referring to Figure 1 to Figure 2 A container lifting crane comprises a crane body 1 and a hanging box 2, characterized in that when the crane body 1 is operated, the hanging box 2 is also lifted, two groups of limit holes 3 are arranged at the bottom of the hanging box 2, a linear motion driving device 4 is installed at the center of the bottom of the hanging box 2, the linear motion driving device 4 is any one of the three types of electric push rods, cylinders and hydraulic cylinders, a rotating frame 5 is horizontally installed at the top of the linear motion driving device 4, a transmission rod 6 is arranged on the rotating frame 5, a group of transmission wheels 7 are sleeved on the transmission rod 6, and rotating bearings 8 are arranged at both ends of the transmission rod 6, and the rotating bearings 8 are installed On the rotating frame 5, a servo motor 9 is installed on either side of the transmission rod 6. The servo motor 9 is installed on the rotating frame 5. The rotating shaft of the servo motor 9 is fixedly connected to the transmission rod 6. A transmission belt 10 is installed on the transmission wheel 7. If the transmission wheel 7 is a gear, the transmission belt 10 is a rack. If the transmission wheel 7 is a sprocket, the transmission belt 10 is a chain. A container lifting frame 11 is installed at the bottom of the hanging box 2. The hanging box 2 also limits the swing of the lifting frame 11. A flat plate 12 is installed on the container lifting frame 11. Both ends of the transmission belt 10 pass through the limiting holes 3 and are fixedly connected to the flat plate 12.

[0028] In one embodiment, loading operation: refer to Figure 1 to Figure 2 , fully extend the linear motion drive device 4, the container hoisting frame 11 and the flat plate 12 are close to the bottom of the hanging box 2, the operator drives the crane body 1 to insert the container hoisting frame 11 into the container loaded with coal to lift it, and at the same time operates the linear motion drive device 4 to retract. When the linear motion drive device 4 is fully retracted, the operator drives the crane body 1 to lift the hanging box 2, and the container hoisting frame 11 and the flat plate 12 are restrained by the container and the inclined coal inside the box. As the operator drives the crane body 1 to slowly lift the hanging box 2, the coal inside the container is affected by its own gravity. When lifting, one side of the container is lifted first. In this process, the transmission belt 10 drives the transmission wheel 7 to rotate, and the staff operates The crane body 1 stops lifting, and then operates the servo motor 9 to rotate and slowly level the container, and then continues to rotate slowly to tilt the container to the other side. The coal inside the container is affected by gravity, and the coal on the slope gradually becomes flat. The tilt angle of the whole process is controlled between 30° and 60°. At the same time, the servo motor 9 slowly rotates to gradually level the coal, which prevents the internal coal from hitting the box door during land transportation. Then the servo motor 9 rotates in the opposite direction to restore the hanging box 2 to a horizontal state, and the linear motion drive device 4 is fully extended. The container lifting frame 11, the flat plate 12 and the container are close to the bottom of the hanging box 2, which is convenient for the crane body 1 to place the container on the transport vehicle.

[0029] In one embodiment, unloading operation: refer to Figure 1 to Figure 2, fully extend the linear motion drive device 4, the container lifting frame 11 and the flat plate 12 are close to the bottom of the hanging box 2, the operator drives the crane body 1 to insert the container lifting frame 11 into the container loaded with coal and lift it from the transport vehicle, and at the same time operate the linear motion drive device 4 to retract. When the linear motion drive device 4 is fully retracted, it is placed on the unloading slope platform (not shown in the figure), and the unloading personnel climb onto the platform to open the box door. The unloading platform is used to unload with the help of the slope to avoid coal dumping out when the box door is directly opened to cause safety accidents. The operator drives the crane body 1 to slowly lift the hanging box 2, and at the same time the servo motor 9 rotates to slowly level the container. Then the operator moves the crane body 1 to the unloading position, and the servo motor 9 slowly rotates to tilt the container to the side where the box door is opened, and dumps the coal inside the container. During the whole process, the tilt angle of the container is controlled between 30° and 60°.

[0030] In one embodiment, referring to Figure 2 The flat plate 12 is an iron piece, and an electromagnet 121 is installed at the bottom of the hanging box 2. When the electromagnet 121 is energized, the flat plate 12 is adsorbed to the bottom of the hanging box 2. During the hoisting process, when the container hoisting frame 11 and the flat plate 12 are close to the bottom of the hanging box 2, the electromagnet 121 opens and adsorbs the flat plate 12, reducing the pressure of the transmission belt 10 on the transmission wheel 7.

[0031] In one embodiment, referring to Figures 3 to 6 A group of through holes 21 are set at the bottom of the hanging box 2, and a limit clamp 22 is installed in the through hole 21. The bottom of the limit clamp 22 protrudes out of the bottom of the hanging box 2. A group of jacking automatic release parts 23 are set on the flat plate 12, and the jacking automatic release parts 23 are directly below the limit clamp 22.

[0032] In one embodiment, referring to Figure 5 The limit clamping member 22 includes a sleeve member 40 and a spring 42. A pair of limit through holes 41 are installed opposite to each other in the sleeve member 40. A spring 42 is installed in the limit through hole 41. A pin shaft 43 is installed in the spring 42. A slope support block 44 is installed at one end of the pin shaft 43 close to the jacking automatic release member 23. The slope support block 44 slides in the limit through hole 41. The slopes of the slope support blocks 44 are opposite to each other and the slopes are in an "eight" shape. A limit block 45 is installed at one end of the pin shaft 43 away from the jacking automatic release member 23. The jacking automatic release member 23 includes a truncated table 50, a sliding rod 51, an inverted truncated table ring 52 and a limit table 53. One end of the sliding rod 51 is fixedly connected to the bottom of the truncated table 50. An inverted truncated table ring 52 is arranged on the sliding rod 51. The inverted truncated table ring 52 slides on the sliding rod 51. The other end of the sliding rod 51 is fixedly connected to the bottom of the truncated table 50.

[0033] In one embodiment, referring to Figures 1 to 6During the lifting process, the linear motion drive device 4 is extended, and the lifting frame 11 and the flat plate 12 gradually approach the bottom of the lifting box 2. The extension length of the linear motion drive device 4 is controlled according to the program setting so that the truncated table 50 first enters the sleeve member 40 and is above the slope shoulder block 44. The linear motion drive device 4 then retracts 5-10 cm, so that part of the weight of the container lifting frame 11, the flat plate 12 and the container is borne by the slope shoulder block 44, reducing the pressure of the transmission belt 10 on the transmission wheel 7 and increasing the service life of the transmission belt 10 and the transmission wheel 7. If loading and unloading work is required, it is only necessary to continue to extend the linear motion drive device 4, and the slope shoulder block 44 fits the inverted truncated table ring 52 and contacts the bottom, and then retract the linear motion drive device 4 so that the jacking automatic release member 23 is separated from the limit clamping member 22 for loading and unloading work.

Claims

1. A container lifting crane, comprising a crane body (1) and a lifting box (2), characterized in that: Two groups of limiting holes (3) are arranged at the bottom of the hanging box (2); a linear motion driving device (4) is installed at the center position of the bottom of the hanging box (2); a rotating frame (5) is horizontally installed at the top of the linear motion driving device (4); a transmission rod (6) is arranged on the rotating frame (5); a group of transmission wheels (7) are sleeved on the transmission rod (6); rotating bearings (8) are arranged at both ends of the transmission rod (6); the rotating bearings (8) are installed on the rotating frame (5); a servo motor (9) is installed on either side of the two sides of the transmission rod (6); the servo motor (9) is installed on the rotating frame (5); a rotating shaft of the servo motor (9) is fixedly connected to the transmission rod (6); and a transmission belt (10) is installed on the transmission wheel (7); A container hoisting frame (11) is installed at the bottom of the hanging box (2), and a flat plate (12) is installed on the container hoisting frame (11). Both ends of the transmission belt (10) pass through the limiting holes (3) and are fixedly connected to the flat plate (12); A group of through holes (21) are provided at the bottom of the hanging box (2), and a limit clamp (22) is installed in the through holes (21). The bottom of the limit clamp (22) protrudes from the bottom of the hanging box (2). A group of automatic lifting release parts (23) are provided on the flat plate (12), and the automatic lifting release parts (23) are located directly below the limit clamp (22).

2. A container lifting crane according to claim 1, characterized in that: The transmission wheel (7) is a gear, and the transmission belt (10) is a rack.

3. The container lifting crane according to claim 1, characterized in that: The transmission wheel (7) is a sprocket wheel, and the transmission belt (10) is a chain.

4. The container lifting crane according to claim 1, characterized in that: The limiting clamping member (22) comprises a sleeve member (40) and a spring (42). A pair of limiting through holes (41) are installed in the sleeve member (40) in opposite directions. The spring (42) is installed in the limiting through hole (41). A pin shaft (43) is installed in the spring (42). A slope support block (44) is installed at one end of the pin shaft (43) close to the lifting automatic release member (23). The slope support block (44) slides in the limiting through hole (41). A limiting block (45) is installed at one end of the pin shaft (43) away from the lifting automatic release member (23).

5. The container lifting crane according to claim 1, characterized in that: The lifting automatic release member (23) comprises a truncated table (50), a sliding rod (51), an inverted truncated table ring (52) and a limiting table (53), one end of the sliding rod (51) is fixedly connected to the bottom of the truncated table (50), the inverted truncated table ring (52) is arranged on the sliding rod (51), the inverted truncated table ring (52) slides on the sliding rod (51), and the other end of the sliding rod (51) is fixedly connected to the bottom of the truncated table (50).

6. The container lifting crane according to claim 1, characterized in that: The flat plate (12) is an iron piece, and an electromagnet (121) is installed at the bottom of the hanging box (2). When the electromagnet (121) is energized, the flat plate (12) is adsorbed on the bottom of the hanging box (2).

7. The container lifting crane according to claim 1, characterized in that: The linear motion driving device (4) is any one of the following three types: an electric push rod, an air cylinder and a hydraulic cylinder.

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