Cobalt-60 container lifting appliance with stay wire guiding function

Abstract

The invention provides a cobalt-60 container lifting appliance with a stay wire guiding function, and relates to the technical field of hoisting, the cobalt-60 container lifting appliance comprises a lifting beam, shackles, a stay wire, an ejector rod assembly, a box body assembly and a shielding plug sling, the box body assembly is used for being installed on a container lifting lug of a cobalt source container, the shackles are rotationally connected to the box body assembly, the shackles are used for being hung at the two ends of the lifting beam, and the shielding plug sling is arranged on the shackles. The ejector rod assemblies are connected to the two ends of the lower portion of the hanging beam, the pull wires are connected to the ejector rod assemblies, and the pull wires are used for pulling the ejector rod assemblies to drive the shackles and the hanging beam to be opened or closed; the shielding plug sling is connected to the middle position of the bottom of the lifting beam; opening and closing of the shackle are operated through the stay wire, observation is convenient, the structure is simple, mechanism performance is stable, errors caused by failure of a complex mechanism are reduced, the shackle is rapidly reset through guiding of the stay wire and cooperation with the force action of the spring and the torsional spring, the trouble that a worker finds the position through a hanging rod is avoided, and operation is easy and convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of lifting and hoisting, and in particular to a cobalt-60 container hoist with a pulling wire guide. Background Art

[0002] Cobalt-60 is a radioactive element that releases two gamma photons during its decay process. It is widely used in many fields such as food, medicine, mechanical flaw detection, and radiotherapy. Its radiation is extremely harmful to humans. The transportation and lifting of cobalt-60 must comply with regulations. Cobalt-60 is usually stored in a 7-meter-deep well. When needed, it is placed in a special container and lifted out of the well for storage and transportation. Since cobalt-60 is a special niche industry, there are many irregularities and inconveniences in the lifting process. For example, some materials show that a shoulder pole beam with hooks at both ends is used, and the shackle is hung on the shoulder pole beam underwater; some are simpler, and a pair of steel ropes are directly tied to the four symmetrical lifting ears of the container, and the steel ropes are directly hung on the crane hook.

[0003] As a radioactive commodity, underwater handling of cobalt-60 presents unique requirements. First, while the container remains intact, the crane hook must be visually confirmed to be engaged. Using a wire rope is unacceptable in this regard, especially with a wire rope clip, which is subject to significant operator interference and unstable bonding. Using a shackle is more standardized and allows for easier observation from above. Second, using a nearly 10-meter-long hanging rod is inconvenient, especially when the water surface is agitated, making both observation and operation difficult. For example, the GY-20 cobalt source container, a small, commonly used road transport device for cobalt-60, is used in industry. This article examines the necessity of underwater handling using the GY-20 cobalt source container. The GY-20 cobalt source container is cylindrical in design, with six lifting lugs distributed circumferentially around the top. Each lug has a φ35mm diameter lifting hole. A shielding plug also serves as the cobalt source access point. After accessing a radioactive source underwater, a shielding plug is typically secured with multiple bolts. The shielding plug is installed on the container and must maintain a fixed orientation. During transportation, a fireproof cover is placed over the shielding plug. When loading the GY-20 cobalt source container underwater with cobalt-60, the fireproof cover and the bolts securing the shielding plug are removed in advance. This is done to lift the shielding plug underwater. After loading the cobalt-60 source, the shielding plug is installed. The container is then lifted out of the water, also using a crane. To lift the shielding plug, the wire rope attached to it must be disconnected. The most challenging aspect of this process is that the shielding plug shifts in position after being lifted, accompanied by the rotation of the crane hook. Repositioning the cover requires manual manipulation of the hook rod, which is quite cumbersome. Therefore, the present invention proposes a cobalt-60 container hoist with a cable guide to address these issues. Summary of the Invention

[0004] In response to the above problems, the present invention proposes a cobalt-60 container sling with a wire guide. The cobalt-60 container sling with a wire guide operates the opening and closing of the shackle by pulling the wire, which is easy to observe, has a simple structure, and stable mechanical performance, reducing errors caused by failure of complex mechanisms. Through the wire guide, the force of the spring and the torsion spring is combined to quickly reset the shackle, avoiding the trouble of workers finding the position through the hanging rod. The operation is simple and convenient.

[0005] To achieve the objectives of the present invention, the present invention is implemented through the following technical solutions: a cobalt-60 container sling with a pulling wire guide, comprising a lifting beam, a shackle, a pulling wire, a mandrel assembly, a box assembly, and a shield plug sling, wherein the box assembly is used to be mounted on the container lifting lug of the cobalt source container, the shackle is rotatably connected to the box assembly, and the shackle is used to be hung on both ends of the lifting beam, the mandrel assembly is connected to both ends below the lifting beam, the pulling wire is connected to the mandrel assembly, and the pulling wire is used to pull the mandrel assembly and drive the shackle and the lifting beam to open or close;

[0006] The shielding plug sling is connected to the middle position of the bottom of the sling beam. A shielding plug is provided at the middle end of the top of the cobalt source container, and a plug lifting lug is provided on the shielding plug. The shielding plug sling is used to be connected to the plug lifting lug.

[0007] Further improvements are: the lifting beam adopts an integrally welded or cast structure, and an upper lifting lug is fixedly welded at the middle position of the top of the lifting beam, and the upper lifting lug is used for lifting. Both ends of the lifting beam are provided with a lifting lug head that is compatible with the shackle, and the bottom of the lifting lug head is provided with a bottom surface, and the bottom surface is used to install the top rod assembly. A threaded hole is provided at the middle position inside the lifting beam, and the threaded hole is used to connect the shielding plug sling.

[0008] A further improvement is that the shielding plug lifting rope consists of an upper bolt, a wire rope and a standard buckle. The upper bolt is adapted to the threaded hole, and the lower end of the upper bolt is connected to the standard buckle through a wire rope. The standard buckle is connected to the plug lifting ear. The wire rope has a margin, which is used to lift the shielding plug after the lifting beam leaves the cobalt source container by a margin.

[0009] A further improvement is that a crossbar is provided inside the shackle, and the crossbar is used to adapt to the push rod assembly to push the shackle to flip.

[0010] Further improvements are: the box assembly includes a box body, an axle pin, a safety card, a torsion spring and a fastening bolt; the box body is used to be sleeved on the container lifting ear and fixed by the fastening bolt; the shackle is used to be installed on the box body and pass through the axle pin, and the shackle is rotatably connected to the box body through the axle pin; the torsion spring is provided on the axle pin, and the upper end of the torsion spring is clamped on the cross bar; the safety card is movably provided on the top of the box body, and the safety card is used to clamp the cross bar after the shackle is flipped to a certain position.

[0011] Further improvements are: the push rod assembly includes a push rod, a push rod seat, and a connecting piece, the push rod seat is used to be fixed under the bottom surface, the push rod moves through the push rod seat, and one end of the push rod is fixed to the connecting piece by an adjusting nut, a spring is connected between the adjusting nut and the push rod seat, and the spring is arranged on the outside of the push rod, one end of the pull wire is connected to the connecting piece, and the pull wire moves through the push rod seat, a guide groove is provided on the upper part of the inside of the box body, the outer end of the pull wire passes through the guide groove, and the push rod is used to move under the pulling action of the pull wire.

[0012] A further improvement is that a push rod sleeve is provided at one end of the outer side of the push rod close to the head, and the push rod sleeve is movably inserted into one end inside the push rod seat, and the push rod sleeve is used to press down the safety card.

[0013] A further improvement is that the pull wire is a soft fiber rope, and one end of the outer side of the pull wire is thickened by spraying colloid to form an end portion, and one end of the pull wire is provided with a ball head, which is used to clamp with the connecting piece.

[0014] The beneficial effects of the present invention are:

[0015] 1. The present invention operates the shackle by pulling the wire to open and close, which is easy to observe, has a simple structure, stable mechanical performance, and reduces errors caused by failure of complex mechanisms. The shackle is quickly reset by pulling the wire and coordinating the force of the spring and torsion spring, avoiding the trouble of workers looking for the position through the hanging rod. The operation is simple and convenient.

[0016] 2. The present invention adopts a shackle-beam combination, which has standardized operation and accurate and easy-to-control load-bearing of structural parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is the front view of the present invention;

[0018] Figure 2 This is a schematic diagram of the cobalt source container of the present invention;

[0019] Figure 3 A schematic diagram of a hanging beam according to the present invention;

[0020] Figure 4 is a schematic diagram of a shackle of the present invention;

[0021] Figure 5 It is a schematic diagram of the box assembly of the present invention;

[0022] Figure 6 is a schematic diagram of a push rod assembly of the present invention;

[0023] Figure 7 is a cross-sectional view of a push rod assembly of the present invention;

[0024] Figure 8 It is a schematic diagram of the wire drawing of the present invention;

[0025] Figure 9 It is a schematic diagram of the working principle of the present invention.

[0026] Among them: 1. Lifting beam; 2. Shackle; 3. Pull wire; 4. Mandrel assembly; 5. Box assembly; 6. Shielding plug sling; 7. Cobalt source container; 8. Container lifting ear; 9. Shielding plug; 10. Mandrel lifting ear; 11. Upper lifting ear; 12. Lifting ear head; 13. Threaded hole; 14. Bottom surface; 15. Cross bar; 16. Box; 17. Axis pin; 18. Safety card; 19. Torsion spring; 20. Fastening bolt; 21. Mandrel; 22. Mandrel seat; 23. Connector; 24. Adjusting nut; 25. Spring; 26. Mandrel sleeve; 27. End; 28. Ball head. DETAILED DESCRIPTION

[0027] In order to deepen the understanding of the present invention, the present invention will be further described in detail below with reference to the examples. The examples are only used to explain the present invention and do not constitute a limitation on the scope of protection of the present invention.

[0028] Example 1

[0029] according to Figure 1-9 As shown, this embodiment provides a cobalt-60 container sling with a pull wire guide, comprising a lifting beam 1, a shackle 2, a pull wire 3, a mandrel assembly 4, a box assembly 5, and a shield plug sling 6. The box assembly 5 is used to be mounted on a container lifting lug 8 of a cobalt source container 7. The shackle 2 is rotatably connected to the box assembly 5 and is used to be hung on both ends of the lifting beam 1. The mandrel assembly 4 is connected to both ends below the lifting beam 1. The pull wire 3 is connected to the mandrel assembly 4. The pull wire 3 is used to pull the mandrel assembly 4 and drive the shackle 2 and the lifting beam 1 to open or close.

[0030] The shielding plug sling 6 is connected to the middle position of the bottom of the hanging beam 1. The shielding plug 9 is provided at the middle end of the top of the cobalt source container 7. The shielding plug 9 is provided with a plug lug 10. The shielding plug sling 6 is used to connect to the plug lug 10. During use, the shackle 2 is opened and closed by the pull wire 3, which is easy to observe. The structure is simple and the mechanical performance is stable, which reduces the errors caused by the failure of complex mechanisms. The shackle 2 is quickly reset by the pull wire 3, avoiding the trouble of workers searching for the position by hanging rods. The operation is simple and convenient.

[0031] The shackle 2 is internally provided with a crosspiece 15, which is adapted to engage the push rod assembly 4 and propel the shackle 2 to tilt. In addition to being specially designed for size and tonnage, the shackle 2 also includes a crosspiece 15. This crosspiece 15 is used to propel the shackle 2 outward via the push rod 21 of the push rod assembly 4. When tilted to a certain position, the crosspiece 15 is locked by a safety latch 18. Simultaneously, one end of a torsion spring 19, which helps the shackle 2 rebound, is also located on the crosspiece 15.

[0032] The box assembly 5 includes a box 16, an axle pin 17, a safety clip 18, a torsion spring 19, and a fastening bolt 20. The box 16 is used to be sleeved on the container lifting ear 8 and fixed by the fastening bolt 20. The shackle 2 is used to be installed on the box 16 and penetrate the axle pin 17. The shackle 2 is rotatably connected to the box 16 via the axle pin 17. The torsion spring 19 is provided on the axle pin 17, and the upper end of the torsion spring 19 is clamped on the crosspiece 15. The safety clip 18 is movably provided on the top of the box 16 and is used to clamp the crosspiece 15 after the shackle 2 is flipped to a certain position. When in use, the box 16 is sleeved on the container lifting ear 8, the fastening bolt 20 is tightened and fixed, and then the shackle 2 is placed, penetrated into the axle pin 17, and the upper end of the torsion spring 19 is clamped on the crosspiece 15.

[0033] The push rod assembly 4 includes a push rod 21, a push rod seat 22, and a connecting piece 23. The push rod seat 22 is used to be fixed under the bottom surface 14. The push rod 21 is movable through the push rod seat 22, and one end of the push rod 21 is fixed to the connecting piece 23 by an adjusting nut 24. A spring 25 is connected between the adjusting nut 24 and the push rod seat 22, and the spring 25 is arranged on the outside of the push rod 21. One end of the pull wire 3 is connected to the connecting piece 23, and the pull wire 3 is movable through the push rod seat 22. A guide groove is provided on the upper part of the interior of the box body 16, and the outer end of the pull wire 3 passes through the guide groove. The push rod 21 is used to move under the pulling action of the pull wire 3. A push rod sleeve 26 is provided at the end of the outer side of the push rod 21 near the head. The push rod sleeve 26 is movably snapped into one end inside the push rod seat 22. The push rod sleeve 26 is used to press down the safety card 18. The adjusting nut 24 is used to fix the initial force of the connecting piece 23 and the spring 25, so that the top rod 21 is pushed out through the connecting piece 23 under the action of the pull wire 3, and the top rod seat 22 is used to fix the top rod assembly 4 on the suspension beam 1.

[0034] The pull wire 3 is a soft fiber rope, and one end of the outer side of the pull wire 3 is thickened by spraying colloid to form an end portion 27. One end of the pull wire 3 is provided with a ball head 28, and the ball head 28 is used to clamp with the connector 23. The pull wire 3 is composed of three parts. The pull wire part is the main body, which is a soft fiber rope. The end portion 27 is thickened by spraying colloid, and the top end is pressed with a stainless steel ball-ball head 28. When in use, the soft fiber rope is inserted into the push rod assembly 4 and the guide groove from the side. After tightening, the ball head 28 is used to clamp the connector 23, which is convenient for pulling the push rod 21. The thickened part of the end portion 27 will not automatically fall out during use, and will not get caught on metal parts.

[0035] Example 2

[0036] according to Figure 1-9 As shown, this embodiment provides a cobalt-60 container sling with a pull wire guide, comprising a lifting beam 1, a shackle 2, a pull wire 3, a mandrel assembly 4, a box assembly 5, and a shield plug sling 6. The box assembly 5 is used to be mounted on a container lifting lug 8 of a cobalt source container 7. The shackle 2 is rotatably connected to the box assembly 5 and is used to be hung on both ends of the lifting beam 1. The mandrel assembly 4 is connected to both ends below the lifting beam 1. The pull wire 3 is connected to the mandrel assembly 4. The pull wire 3 is used to pull the mandrel assembly 4 and drive the shackle 2 and the lifting beam 1 to open or close.

[0037] The shielding plug sling 6 is connected to the middle position of the bottom of the hanging beam 1. The shielding plug 9 is provided at the middle end of the top of the cobalt source container 7. The shielding plug 9 is provided with a plug lug 10. The shielding plug sling 6 is used to connect to the plug lug 10. During use, the shackle 2 is opened and closed by the pull wire 3, which is easy to observe. The structure is simple and the mechanical performance is stable, which reduces the errors caused by the failure of complex mechanisms. The shackle 2 is quickly reset by the pull wire 3, avoiding the trouble of workers searching for the position by hanging rods. The operation is simple and convenient.

[0038] The suspension beam 1 is of integrally welded or cast structure, and an upper lifting lug 11 is fixedly welded at the middle position of the top of the suspension beam 1. The upper lifting lug 11 is used for lifting. Both ends of the suspension beam 1 are provided with a lifting lug head 12 adapted to the shackle 2, and the bottom of the lifting lug head 12 is provided with a bottom surface 14. The bottom surface 14 is used to install the top rod assembly 4. A threaded hole 13 is provided at the middle position inside the suspension beam 1, and the threaded hole 13 is used to connect the shielding plug sling 6. The suspension beam 1 is of integrally welded or cast structure, and the upper lifting lug 11 is fixedly welded to adapt to indoor lifting use and to reduce the height of the suspension beam. A bottom surface 14 is processed at the bottom of the lifting lugs on both sides of the beam body for installing the top rod assembly 4. There is a threaded hole 13 at the middle bottom of the suspension beam 1 for connecting the shielding plug sling 6.

[0039] The shield plug sling 6 consists of an upper bolt, a wire rope, and a standard buckle. The upper bolt fits into the threaded hole 13, and the lower end of the upper bolt is connected to the standard buckle via the wire rope. The standard buckle is connected to the plug lifting lug 10. The wire rope has a certain amount of excess, which is used to lift the shield plug 9 after the lifting beam 1 has moved a certain distance away from the cobalt source container 7. During use, the upper bolt is tightened to the lifting beam 1, and the shield plug 9 is connected to the standard buckle via the wire rope. The wire rope has a certain amount of excess, which allows the shield plug 9 to be lifted after the lifting beam 1 has moved a certain distance away from the container.

[0040] When in use, first connect the plug ear 10 of the shielding plug 9 to the shielding plug sling, put the box assembly 5 on the container ear 8 and fix it, then hang the ball head 28 of the pull wire 3 on the connector 23 of the push rod assembly 4, and it is in a closed state at this time. When the crane is lifted up, the hanging beam 1 is lifted up, and the lifting eye head 12 is hooked on the shackle 2 to lift the cobalt source container 7; when the crane is lowered to lower the container, the pull wire 3 is manually pulled, and the pull wire 3 drives the push rod 21 to push out the shackle 2, and the shackle 2 opens, so that the cross bar 15 passes over the safety card 18 and is stuck by the safety card 18, and the hanging beam 1 can be detached from the shackle 2. At this time, the pull wire 3 rises together with the hanging beam 1 and lifts the shielding plug 9; when the cobalt-60 raw material is installed in place, the pull wires 3 on both sides of the hanging beam 1 are appropriately pulled at the same time to make the hanging beam 1 return to its original position along the pull wire 3, and the pull wire 3 is appropriately tightened to make the push rod 21 drive the push rod sleeve 26 to move and press the safety card 18, and then the pull wire 3 is released. The push rod 21 and the shackle 2 are reset to the closed state under the action of the spring 25 and the torsion spring 19. After the shackle 2 passes over the safety card 18, the push rod sleeve 26 is brought back by the head of the push rod 21, and the safety card 18 is released, completing the entire lifting process.

[0041] The present invention operates the opening and closing of the shackle 2 by pulling the wire 3, which is convenient for observation, has a simple structure, stable mechanical performance, and reduces errors caused by failure of complex mechanisms. The shackle 2 is quickly reset by guiding the wire 3 and cooperating with the force of the spring 25 and the torsion spring 19, avoiding the trouble of workers searching for the position through the hanging rod, and is simple and convenient to operate. At the same time, the present invention adopts the combination of the shackle 2 and the hanging beam 1, which has standardized operation and the load-bearing of the structural parts is accurate and easy to control.

[0042] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A cobalt-60 container sling with a cable guide, comprising a sling beam (1), a shackle (2), a cable (3), a mandrel assembly (4), a box assembly (5) and a shield plug sling (6), characterized in that: The box assembly (5) is used to be installed on the container lug (8) of the cobalt source container (7), the shackle (2) is rotatably connected to the box assembly (5), and the shackle (2) is used to be hung on both ends of the hanging beam (1), the top rod assembly (4) is connected to both ends below the hanging beam (1), the pull wire (3) is connected to the top rod assembly (4), and the pull wire (3) is used to pull the top rod assembly (4) and drive the shackle (2) and the hanging beam (1) to open or close; The shielding plug sling (6) is connected to the middle position of the bottom of the sling beam (1), a shielding plug (9) is provided at the middle end of the top of the cobalt source container (7), and a plug lug (10) is provided on the shielding plug (9), and the shielding plug sling (6) is used to be connected to the plug lug (10).

2. The cobalt-60 container sling with a wire guide according to claim 1, characterized in that: The lifting beam (1) adopts an integrally welded or cast structure, and an upper lifting lug (11) is fixedly welded at the middle position of the top of the lifting beam (1), and the upper lifting lug (11) is used for lifting. Both ends of the lifting beam (1) are provided with a lifting lug head (12) adapted to the shackle (2), and the bottom of the lifting lug head (12) is provided with a bottom surface (14), and the bottom surface (14) is used to install the top rod assembly (4). A threaded hole (13) is provided at the middle position inside the lifting beam (1), and the threaded hole (13) is used to connect the shielding plug sling (6).

3. The cobalt-60 container sling with a wire guide according to claim 2, characterized in that: The shielding plug sling (6) is composed of an upper bolt, a steel wire rope and a standard buckle. The upper bolt is adapted to the threaded hole (13), and the lower end of the upper bolt is connected to the standard buckle via the steel wire rope. The standard buckle is connected to the plug lifting lug (10). The steel wire rope has a margin and is used to lift the shielding plug (9) after the lifting beam (1) leaves the cobalt source container (7) by the margin.

4. The cobalt-60 container sling with a wire guide according to claim 2, characterized in that: A crossbar (15) is provided inside the shackle (2), and the crossbar (15) is used to adapt to the top rod assembly (4) to push the shackle (2) to flip.

5. The cobalt-60 container sling with a wire guide according to claim 4, characterized in that: The box assembly (5) includes a box (16), an axle pin (17), a safety card (18), a torsion spring (19) and a fastening bolt (20), wherein the box (16) is used to be sleeved on the container lifting ear (8) and fixed by the fastening bolt (20), the shackle (2) is used to be installed on the box (16) and penetrate the axle pin (17), and the shackle (2) is rotatably connected to the box (16) through the axle pin (17), the torsion spring (19) is provided on the axle pin (17), and the upper end of the torsion spring (19) is clamped on the crossbar (15), the safety card (18) is movably provided on the top of the box (16), and the safety card (18) is used to clamp the crossbar (15) after the shackle (2) is flipped to a certain position.

6. The cobalt-60 container sling with a wire guide according to claim 4, characterized in that: The push rod assembly (4) includes a push rod (21), a push rod seat (22), and a connecting piece (23). The push rod seat (22) is used to be fixed under the bottom surface (14). The push rod (21) moves through the push rod seat (22), and one end of the push rod (21) is fixed to the connecting piece (23) through an adjusting nut (24). A spring (25) is connected between the adjusting nut (24) and the push rod seat (22), and the spring (25) is provided on the outside of the push rod (21). One end of the pull wire (3) is connected to the connecting piece (23), and the pull wire (3) moves through the push rod seat (22). A guide groove is provided on the upper part of the interior of the box (16), and the outer end of the pull wire (3) passes through the guide groove. The push rod (21) is used to move under the pulling action of the pull wire (3).

7. The cobalt-60 container sling with a wire guide according to claim 6, characterized in that: A push rod sleeve (26) is provided at one end of the outer side of the push rod (21) close to the head, and the push rod sleeve (26) is movably snapped into one end inside the push rod seat (22). The push rod sleeve (26) is used to press down the safety card (18).

8. The cobalt-60 container sling with a wire guide according to claim 6, characterized in that: The pull wire (3) is a soft fiber rope, and one end of the outer side of the pull wire (3) is thickened by spraying colloid to form an end portion (27). One end of the pull wire (3) is provided with a ball head (28), and the ball head (28) is used to clamp with the connecting piece (23).

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