Lifting point device and method of using the same

Abstract

The present invention discloses a hanging point device and a method for using the same. The hanging point device comprises a box body, a steel wire sling, a traction rope and a load-bearing rod contained in the box body; the outer periphery of the box body is provided with at least one positioning hole, and the positioning hole is used for buckle insertion to fix the box body on a steel grating structure; the box body is provided with at least one through hole that passes through the bottom of the box body; when the hanging point device is in use, one end of the steel wire sling is sleeved on the load-bearing rod, and the other end is suspended below the steel grating structure through the through hole and the grating hole of the steel grating structure. The hanging point device of the present invention forms a hanging point on the steel grating structure through the box body and the load-bearing rod contained therein in combination with the steel wire sling, which is stable, reliable and safe.

Description

Technical Field

[0001] The invention relates to the technical field of equipment lifting, and in particular to a lifting point device and a use method thereof. Background Art

[0002] The internal platforms of nuclear power plants are generally arranged with steel grating structures. Both construction work in the construction phase and maintenance work in the operation phase need to consider and solve the problem of how to set up temporary lifting points and carry out lifting operations under such environmental conditions.

[0003] At present, the commonly used method for lifting under the steel grid structure is generally to lay a sleeper or a rack pipe horizontally as a lifting point, and hang a sling or sling for lifting. However, the method of using sleepers and rack pipes as temporary lifting points is relatively primitive, and the operators are more casual and irregular when arranging the lifting points. Whether the lifting points can bear the corresponding load can only be judged by experience, which is unsafe and unreliable. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a lifting point device and a use method thereof for improving the safety and reliability of lifting operations.

[0005] The technical solution adopted by the present invention to solve the technical problem is: to provide a suspension point device for positioning on a steel grating structure, the suspension point device comprising a box body, a steel wire suspension rope contained in the box body, a traction rope and a load-bearing rod;

[0006] At least one positioning hole is provided on the outer periphery of the box body, and the positioning hole is used for buckling and passing through to fix the box body on the steel grid structure;

[0007] The box body is provided with at least one through hole penetrating through the bottom of the box body; when the hanging point device is in use, one end of the steel wire sling is sleeved on the load-bearing rod, and the other end is suspended below the steel grille structure through the through hole and the grille holes of the steel grille structure.

[0008] Preferably, the box body is horizontally placed on the steel grid structure; the box body is provided with a first accommodating groove, a second accommodating groove and a third accommodating groove arranged adjacent to each other, the steel wire sling and the traction rope are respectively arranged in the first accommodating groove and the second accommodating groove, and the load-bearing rod is horizontally placed in the third accommodating groove;

[0009] The through hole is arranged in the third accommodating groove.

[0010] Preferably, the four sides of the box body are inclined surfaces inclined outward from the top to the bottom of the box body;

[0011] The positioning hole penetrates at least one inclined surface.

[0012] Preferably, the box body includes two first inclined surfaces corresponding to its two opposite long sides, two second inclined surfaces corresponding to its two opposite short sides, and also includes a third inclined surface corresponding to the diagonal corners of the box body and connected between the first and second inclined surfaces; the positioning hole passes through the third inclined surface.

[0013] Preferably, the length of the load-bearing rod is 0.8m-1.6m; the diameter of the load-bearing rod is 20mm-30mm.

[0014] Preferably, the hanging point device further comprises a box cover which can be opened and closed on the opening of the box body.

[0015] Preferably, the suspension point device further comprises a buckle which cooperates with the positioning hole to fix the box body on the steel grid structure.

[0016] The present invention also provides a method for using the suspension point device, comprising the following steps:

[0017] S1. placing and fixing the hanging point device on the steel grid structure;

[0018] S2, take out the steel wire sling and the traction rope from the box body and connect one end of the two;

[0019] S3, passing the steel wire sling through the through hole in the box body, and lowering the steel wire sling to the bottom of the steel grid structure through the traction rope;

[0020] S4, after the steel wire sling is lowered to a predetermined height, the lifting connector is hung on the steel wire sling;

[0021] S5, pulling up the steel wire sling through the traction rope until one end of the steel wire sling connected to the traction rope passes through the through hole of the box body;

[0022] S6. Slip one end of the steel wire sling onto the load-bearing rod, and place the load-bearing rod horizontally in the box body.

[0023] Preferably, in step S1, the box body is fixed on the steel grid structure by inserting a buckle between the positioning hole of the box body of the hanging point device and the steel grid structure.

[0024] Preferably, the four diagonal outer sides of the box body are provided with the positioning holes, and the box body is horizontally fixed on the steel grid structure by at least four groups of buckles respectively cooperating with the positioning holes.

[0025] Preferably, the two opposite ends of the steel wire sling are respectively a first end and a second end;

[0026] In step S2, one end of the traction rope is connected to the first end of the wire sling through a lock;

[0027] In step S3, the second end of the steel wire sling is directed downward, passed through the through hole in the box body and the grid holes of the steel grid structure in sequence, and lowered to a predetermined height.

[0028] Preferably, in step S4, the lifting connection member includes a hand winch.

[0029] The beneficial effects of the present invention are as follows: through the box body and the load-bearing rods contained therein and the like in combination with the steel wire slings, a hanging point is formed on the steel grating structure, which is stable, reliable and safe.

[0030] The size and specifications of the lifting point device can be designed to match the structural characteristics of the steel grating, so that it can be flexibly arranged and widely used in nuclear power plants with narrow space and compact items. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0032] Figure 1 It is a structural schematic diagram of a hanging point device according to an embodiment of the present invention;

[0033] Figure 2 It is a schematic diagram of the coordination process between the steel wire sling and the load-bearing rod in the lifting point device of one embodiment of the present invention (partial structure);

[0034] Figure 3 It is a structural schematic diagram (partial structure) of a hanging point device on a steel grating structure according to an embodiment of the present invention. DETAILED DESCRIPTION

[0035] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, specific embodiments of the present invention are now described in detail with reference to the accompanying drawings.

[0036] like Figure 1-3 As shown, a suspension point device according to an embodiment of the present invention may include a box body 10 , a box cover 20 , a steel wire suspension rope 30 accommodated in the box body 10 , a traction rope 40 , and a load-bearing rod 50 .

[0037] The suspension point device of the present invention is used to be positioned on the steel grid structure, mainly by positioning the box body 10 on the steel grid structure. To this end, the outer periphery of the box body 10 is provided with at least one positioning hole 100, which is used for snap-fitting to fix the box body 10 on the steel grid structure.

[0038] The wire sling 30, the traction rope 40 and the load-bearing rod 50 are all accommodated in the box body 10. The top of the box body 10 is open to form an opening, thereby opening the internal space of the box body 10, which is convenient for taking and placing the wire sling 30, the traction rope 40 and the load-bearing rod 50 in the box body 10.

[0039] The box cover 20 can be opened and closed on the top of the box body 10, and is used to open and close the opening of the box body 10. When the box cover 20 closes the opening of the box body 10, the steel wire sling 30, the traction rope 40 and the load-bearing rod 50 are simultaneously enclosed inside the box body 10, which facilitates the transportation and storage of the hanging point device. When it is needed, the box cover 20 is opened to open the opening of the box body 10, and the steel wire sling 30, the traction rope 40 and the load-bearing rod 50 therein can be taken out.

[0040] In order to reduce the burden of carrying, the box body 10 can be made of insulating plastic with a certain rigidity or lightweight metal and is relatively light in weight.

[0041] One side of the box cover 20 can be rotatably connected to one side of the opening of the box body 10 through a hinge or other structure, so that the box cover 20 is not separated from the box body 10. Of course, the box cover 20 can also be provided separately from the box body 10, and when the opening needs to be closed, the box cover 20 is buckled on the opening of the box body 10, and the box cover 20 and the box body 10 can be detachably assembled on the box body 10 by means of a snap-fit ​​structure, a tight fit, or a bolt connection.

[0042] In order to allow the box body 10 to be stably placed horizontally on the steel grid structure, the box body 10 can be set to have a bottom size larger than a top size. For example, the cross section of the box body 10 is trapezoidal, so that the bottom of the box body 10 can be stably placed on the steel grid structure without tilting.

[0043] Specifically, in this embodiment, Figure 1 As shown, the four sides of the box body 10 are inclined surfaces, each of which is inclined outward from the top to the bottom of the box body 10, so that the area of ​​the bottom surface of the box body 10 is larger than the area of ​​the top surface. The positioning hole 100 runs through at least one inclined surface.

[0044] Further, Figure 1 The box body 10 is a substantially flat rectangular parallelepiped box body 10. The box body 10 includes two first inclined planes 101 corresponding to its two opposite long sides, two second inclined planes 102 corresponding to its two opposite short sides, and a third inclined plane 103 corresponding to the diagonal position of the box body 10 and connected between the first inclined plane 101 and the second inclined plane 102.

[0045] The positioning hole 100 preferably passes through the third inclined surface 103, so that the box body 10 is fixed to the steel grid structure at diagonals in four directions through the penetration of the buckles.

[0046] In addition, slots may be provided on the first inclined surface 101 and the second inclined surface 102 of the box body 10 as required to facilitate the lifting and lowering of the hanging point device.

[0047] In order to accommodate the wire sling 30, the traction rope 40 and the load-bearing rod 50 in the box body 10 in an orderly manner, the box body 10 is provided with a first receiving groove 11, a second receiving groove 12 and a third receiving groove 13 arranged adjacently. Figure 1 In the box body 10 shown, the first accommodating groove 11, the second accommodating groove 12 and the third accommodating groove 13 are adjacent to each other.

[0048] The wire sling 30 and the traction rope 40 are respectively arranged in the first accommodating groove 11 and the second accommodating groove 12 , and the load-bearing rod 50 is horizontally placed in the third accommodating groove 13 .

[0049] Among them, since the steel wire sling 30 is the main connection point of the suspension point, it is usually not too long, so the first accommodating groove 11 can be set according to the length of the steel wire sling 30, so that the steel wire sling 30 can be placed horizontally therein. It can be understood that the steel wire sling 30 has one or more.

[0050] The traction rope 40 is used to connect the steel wire sling 30 and lower or lift the steel wire sling 30. Generally, it has a long length to lower the steel wire sling 30 to the predetermined position where the steel grid structure is lowered. The traction rope 40 is generally formed of a flexible rope and can be folded, so it can be folded and accommodated in the second receiving groove 12.

[0051] The load-bearing rod 50 is used to connect with the steel wire sling 30, and cooperates with the box body 10 to bear the weight of the object connected below the steel wire sling 30. It is kept horizontally placed on the steel grid structure, and is positioned in the third receiving groove 13 of the box body 10, and is horizontally positioned on the steel grid structure together with the box body 10. The third receiving groove 13 is set according to the length of the load-bearing rod 50, so as to be long enough to accommodate the load-bearing rod 50.

[0052] In addition, the width of the third accommodating groove 13 can be set according to the load-bearing rod 50 to have a certain displacement limiting effect on the load-bearing rod 50, thereby preventing the load-bearing rod 50 from being displaced radially in the third accommodating groove 13 in a manner that affects lifting.

[0053] exist Figure 1 , Figure 2 In the box body 10 shown, the first receiving groove 11 and the second receiving groove 12 are located on one side of the inner space of the box body 10 and are located in a straight line. The third receiving groove 13 is parallel to the first receiving groove 11 and the second receiving groove 12 and is located on the other side of the inner space of the box body 10.

[0054] In order to ensure that the load-bearing rod 50 remains horizontally positioned in the box body 10 when the wire sling 30 is sleeved on the load-bearing rod 50, the box body 10 is provided with at least one through hole 110 passing through the bottom of the box body 10, so that one end of the wire sling 30 can pass through the through hole into the box body 10 and be sleeved on the load-bearing rod 50.

[0055] Corresponding to the positioning of the load-bearing rod 50 in the third receiving groove 13, a through hole is provided in the third receiving groove 13. According to the needs, there can be one, two, three or more through holes. For the provision of two through holes, the two through holes can be opened on the bottom surface of the third receiving groove 13 corresponding to the two ends of the load-bearing rod 50. For the provision of three or more through holes, they can be distributed at intervals on the bottom surface of the third receiving groove 13 along the axial direction of the load-bearing rod 50, so as to facilitate the use of at least one through hole 110 according to actual needs.

[0056] When the suspension point device of the present invention is in use, one end of the steel wire sling 30 is sleeved on the load-bearing rod 50, and the other end is suspended below the steel grid structure through the through hole 110 and the grid holes of the steel grid structure.

[0057] The load-bearing rod 50 is designed and formed after mechanical analysis and calculation, and can be provided with various specifications, such as a length of 0.8m-1.6m and a diameter of 20mm-30mm. The size 9 (especially the length) of the box body 10 is set according to the size specifications of the load-bearing rod 50 to be accommodated.

[0058] According to the weight of the object to be lifted under the wire sling 30, a load-bearing rod 50 with a corresponding load-bearing value is selected, for example, a load-bearing rod 50 with a length of 1.6 m and a diameter of 30 mm, or a load-bearing rod 50 with a length of 0.8 m and a diameter of 20 mm.

[0059] Furthermore, the suspension point device of the present invention may also include a buckle that cooperates with the positioning hole 100 to fix the box body 10 on the steel grid structure.

[0060] The method of using the suspension point device of the present invention is as follows: Figure 1-3 , which may include the following steps:

[0061] S1. Place and fix the lifting point device on the steel grid structure.

[0062] Select a corresponding specification of the lifting point device according to the weight of the object to be lifted, for example, select the specification of the load-bearing rod 50, such as 1.6m long and 30mm in diameter, or 0.8m long and 20mm in diameter.

[0063] According to the position to be lifted, place the lifting device at the corresponding position on the steel grid structure.

[0064] The box body 10 is fixed on the steel grid structure by inserting the buckle between the positioning hole 100 of the box body 10 and the steel grid structure.

[0065] In combination with the structural record of the above hanging point device, it is preferred that positioning holes 100 are provided on the four diagonal outer sides of the box body 10, and at least four sets of buckles are respectively matched with the positioning holes 100 to fix the box body 10 horizontally on the steel grid structure to ensure that the box body 10 will not be displaced or rotated on the steel grid structure.

[0066] S2, take out the wire sling 30 and the traction rope 40 from the box body 10 and connect one end of the two.

[0067] Specifically, the two opposite ends of the wire sling 30 are respectively a first end and a second end. After the wire sling 30 and the traction rope 40 are taken out of the box body 10, one end of the traction rope 40 is connected to the first end of the wire sling 30 through a lock or other connecting member. The other end of the traction rope 40 and the second end of the wire sling 30 are respectively free.

[0068] S3, passing the steel wire sling 30 through the through hole 110 in the box body 10, and lowering the steel wire sling 30 to the bottom of the steel grid structure through the traction rope 40.

[0069] Combined with step S2, the second end of the wire sling 30 is directed downward, passed through the through hole 110 in the box body 10 and the grid hole of the steel grid structure in sequence, and lowered to a predetermined height below the steel grid structure through the traction rope 40.

[0070] In addition, since the through hole 110 is disposed in the third receiving groove 13 where the load-bearing rod 50 is placed, before lowering the wire sling 30 , the load-bearing rod 50 is first taken out of the third receiving groove 13 to expose the through hole 110 .

[0071] S4. After the wire sling 30 is lowered to a predetermined height, a lifting connection member such as a hand chain hoist is hung on the wire sling 30.

[0072] S5. Pull up the steel wire sling 30 through the traction rope 40 until the end of the steel wire sling 30 connected to the traction rope 40 passes through the through hole 110 of the box body 10.

[0073] The first end of the wire sling 30 is connected to the traction rope 40 , so when the wire sling 30 is pulled up by the traction rope 40 , the first end of the wire sling 30 is pulled up until it passes through the grille hole of the steel grille structure and the through hole 110 in the box body 10 in sequence.

[0074] It can be understood that while the wire sling 30 is pulled up by the traction rope 40, the lifting connector such as a hand winch connected to the second end of the wire sling 30 is also pulled up, and the lifting connector stops below the steel grating structure, that is, it will not pass through the grating holes of the steel grating structure upwards.

[0075] S6. Slip one end of the steel wire sling 30 onto the load-bearing rod 50 , and place the load-bearing rod 50 horizontally in the box body 10 .

[0076] After the first end of the wire sling 30 passes through the through hole 110 to reach the box body 10 or above the third receiving groove 13, the first end of the wire sling 30 is put onto the load-bearing rod 50, and then the load-bearing rod 50 is put back into the third receiving groove 13 and placed horizontally in the third receiving groove 13.

[0077] The steel wire sling 30 is tautly suspended under the box body 10 and the steel grid structure under the action of gravity, so that the suspension point device forms a lifting point on the steel grid structure.

[0078] After the above lifting points are completed, the objects can be connected and lifted through the lifting chain connected to the hand hoist.

[0079] Further, in the method for using the above-mentioned lifting point device, in one embodiment, a steel wire sling 30 is lowered to a predetermined height below the steel grid structure through a traction rope 40 through a through hole 110 in the middle position in the third receiving groove 13, and after the lifting connector is connected to the second end of the steel wire sling 30, the steel wire sling 30 is pulled up by the traction rope 40 until it passes through the through hole 110 in the third receiving groove 13 and is exposed above the third receiving groove 13. Finally, the first end of the steel wire sling 30 is sleeved on the middle position of the load-bearing rod 50, and the load-bearing rod 50 is placed in the third receiving groove 13.

[0080] In another embodiment, the two steel wire slings 30 are respectively lowered to a predetermined height below the steel grid structure through the through holes 110 at both ends of the third receiving groove 13 by the traction rope 40, and after the lifting connector is connected to the second ends of the two steel wire slings 30, the two steel wire slings 30 are pulled up by the traction rope 40 until they respectively pass through the through holes 110 at both ends of the third receiving groove 13 and are exposed above the third receiving groove 13. Finally, the first ends of the two steel wire slings 30 are respectively sleeved on the two ends of the load-bearing rod 50, and the load-bearing rod 50 is placed in the third receiving groove 13.

[0081] In another embodiment, the three steel wire slings 30 are respectively lowered to a predetermined height below the steel grid structure through the through holes 110 at both ends and in the middle of the third receiving groove 13 by the traction rope 40, and after at least one lifting connector is connected to the second ends of the three steel wire slings 30, the three steel wire slings 30 are pulled up by the traction rope 40 until they respectively pass through the through holes 110 in the third receiving groove 13 and are exposed above the third receiving groove 13. Finally, the first ends of the three steel wire slings 30 are respectively sleeved on the two ends and the middle position of the load-bearing rod 50, and the load-bearing rod 50 is placed in the third receiving groove 13.

[0082] In addition, according to the requirements of lifting objects, two or more lifting point devices can be arranged on the steel grating structure, and at least one hand chain hoist is hung under each lifting point device. The objects can be lifted by the cooperation of two or more hand chain hoists.

[0083] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A hanging point device, characterized in that: Used to be positioned on a steel grid structure, the suspension point device comprises a box body, a steel wire sling housed in the box body, a traction rope and a load-bearing rod; At least one positioning hole is provided on the outer periphery of the box body, and the positioning hole is used for buckling and passing through to fix the box body on the steel grid structure; The box body is provided with at least one through hole penetrating the bottom of the box body; when the suspension point device is in use, one end of the steel wire sling is sleeved on the load-bearing rod, and the other end is suspended below the steel grid structure through the through hole and the grid hole of the steel grid structure; The box body is horizontally placed on the steel grid structure; the box body is provided with a first receiving groove, a second receiving groove and a third receiving groove arranged adjacent to each other, the steel wire sling and the traction rope are respectively arranged in the first receiving groove and the second receiving groove, and the load-bearing rod is horizontally placed in the third receiving groove; The through hole is arranged in the third containing groove; The box body is configured such that a bottom dimension is larger than a top dimension.

2. The suspension point device according to claim 1, characterized in that: The four sides of the box body are inclined surfaces that are inclined outward from the top to the bottom of the box body; The positioning hole penetrates at least one inclined surface.

3. The suspension point device according to claim 2, characterized in that: The box body includes two first inclined surfaces corresponding to its two opposite long sides, two second inclined surfaces corresponding to its two opposite short sides, and also includes a third inclined surface corresponding to the diagonal position of the box body and connected between the first inclined surfaces and the second inclined surfaces; the positioning hole passes through the third inclined surface.

4. The suspension point device according to claim 1, characterized in that: The length of the load-bearing rod is 0.8m-1.6m; the diameter of the load-bearing rod is 20mm-30mm.

5. The suspension point device according to any one of claims 1 to 4, characterized in that: The hanging point device also includes a box cover which can be opened and closed on the opening of the box body.

6. The suspension point device according to any one of claims 1 to 4, characterized in that: The hanging point device also includes a buckle that cooperates with the positioning hole to fix the box body on the steel grid structure.

7. A method for using the suspension point device according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1. placing and fixing the hanging point device on the steel grid structure; The box body is fixed on the steel grid structure by inserting a buckle between the positioning hole of the box body of the hanging point device and the steel grid structure; S2, take out the steel wire sling and the traction rope from the box body and connect one end of the two; S3, passing the steel wire sling through the through hole in the box body, and lowering the steel wire sling to the bottom of the steel grid structure through the traction rope; S4, after the steel wire sling is lowered to a predetermined height, the lifting connector is hung on the steel wire sling; S5, pulling up the steel wire sling through the traction rope until one end of the steel wire sling connected to the traction rope passes through the through hole of the box body; S6. Slip one end of the steel wire sling onto the load-bearing rod, and place the load-bearing rod horizontally in the box body.

8. The method for using the suspension point device according to claim 7, characterized in that: The four diagonal outer sides of the box body are all provided with the positioning holes, and the box body is horizontally fixed on the steel grid structure by at least four groups of buckles respectively cooperating with the positioning holes.

9. The method for using the suspension point device according to claim 7, characterized in that: The opposite ends of the steel wire sling are respectively a first end and a second end; In step S2, one end of the traction rope is connected to the first end of the wire sling through a lock; In step S3, the second end of the steel wire sling is directed downward, passed through the through hole in the box body and the grid holes of the steel grid structure in sequence, and lowered to a predetermined height.

10. The method for using the suspension point device according to claim 7, characterized in that: In step S4, the lifting connection member includes a hand winch.

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