Lifting appliance for lifting single bar

Abstract

The invention discloses a lifting appliance for lifting a single bar, and relates to the technical field of bar lifting appliance design and application. Comprising a lifting hook and a supporting plate, the lifting hook comprises a connecting part, a bearing part and a hook bending part which are integrally connected, the connecting part can be divided into a first connecting part and a second connecting part, the first connecting part and the bearing part are oppositely arranged, the second connecting part is connected with the bearing part, and the first connecting part, the second connecting part and the bearing part can be matched to form a containing space with a U-shaped opening. The bearing portion is fixedly connected with a supporting plate used for bearing the end of the bar, the end portion of the end of the supported bar abuts against the second connecting portion, the hook portion extends in the first direction, the first connecting portion is connected with the hook portion, and the first connecting portion and the hook portion can be matched to form a hook used for hanging a lifting rope. And the opening direction of the hook is opposite to the lifted bar. According to the invention, not only can the safety risk caused by hoisting of a single bar in the prior art be effectively solved, but also the operation efficiency of hoisting of the single bar can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of bar lifting device design and application, in particular to a lifting device for lifting a single bar. Background Art

[0002] During the bar finishing process, a single bar needs to be transferred, adjusted, weighed, etc. Currently, the bars are lifted by wire ropes or slings. However, for bars with a higher surface finish, the wire ropes or slings may slip and the lifting of the bars may be unstable when the lifting begins. In addition, when the bars are lifted and transferred, the lifted bars may slip, deflect, or fall. The lifting efficiency is low and there are major safety hazards. Summary of the invention

[0003] The object of the present invention is to provide a lifting device for lifting a single bar, so as to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a hoist for lifting a single rod, comprising a hook and a support plate, the hook comprising a connecting part, a supporting part and a hook part which are integrally connected, the axis of the connecting part, the axis of the supporting part and the axis of the hook part are all in the same horizontal plane; the connecting part can be divided into a first connecting part and a second connecting part, the first connecting part is arranged opposite to the supporting part, the second connecting part is connected to the supporting part, the first connecting part, the second connecting part and the supporting part can cooperate to form a accommodating space with a U-shaped opening, the supporting part is fixedly connected to the support plate for supporting the end of the rod, and the end of the supported end of the rod abuts against the second connecting part; the hook part extends along a first direction, the first connecting part is connected to the hook part, and the first connecting part and the hook part can cooperate to form a hook for hanging a lifting rope, and the opening direction of the hook is away from the hoisted rod.

[0005] Based on the above technical features, when the present invention is used for lifting a single bar, two lifting devices and two lifting ropes need to be prepared, and the rope ends of the lifting ropes are respectively hung on the hooks of the two hooks, and then the two ends of the bar are respectively extended into the accommodating spaces of the two hooks, and the end of the bar is supported on the support plate and the end is abutted on the second connecting part. After completing the above operations, the crane can be directed to lift. The above bar lifting operation process is not only easy to operate, but also relatively safe and stable when lifting the bar.

[0006] In the present technical solution, preferably, an inner angle is formed between the second connecting portion and the supporting portion, and the included angle range of the inner angle is 80° to 90°.

[0007] Based on the above technical features, a certain inner angle is formed between the second connecting portion and the supporting portion, so that when the sling is used to lift a single bar, the sling can well hook the end of the bar and effectively prevent the bar from falling during lifting.

[0008] Preferably in the present technical solution, the pallet is arc-shaped and bent in a direction away from the accommodating space, the pallet extends along a first direction, and the pallet is adapted to the hoisted rods; the inner arc radius of the pallet is not less than the radius of the hoisted rods, and the arc range of the pallet is 90° to 180°; more preferably, the inner arc radius of the pallet is the same as the radius of the hoisted rods.

[0009] Based on the above technical features, the arc-shaped support plate is adapted to the hoisted rods. When the rods are hooked on the sling, the rods can be automatically centered, thereby improving the lifting efficiency and making the rods more stable during lifting.

[0010] Preferably in the present technical solution, the sling also includes a baffle, which is located in the accommodating space and fixedly connected to the second connecting portion, and the end of the end of the hoisted rod abuts against the baffle, and the baffle is a round steel plate, the radius of the baffle is the same as the inner arc radius of the support plate, and the baffle is welded to the inner arc surface of the support plate along the circumferential direction.

[0011] Based on the above technical features, the end of the hoisted rod is abutted against the baffle, and the baffle can effectively bear the force of the rod along the axis to prevent the rod from deflecting and falling when hoisting.

[0012] Preferably in the present technical solution, the tip of the hook is chamfered.

[0013] Based on the above technical features, the sharp edge of the hook can be effectively removed to avoid scratching the operator and improve the safety of the product.

[0014] In the present technical solution, preferably, an arc hook is provided at one end of the hook portion away from the first connecting portion, and the arc hook is located at the opening position of the hook to prevent the lifting rope from falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a sling in an embodiment of the present invention;

[0016] Figure 2 is a front view of a sling in an embodiment of the present invention;

[0017] Figure 3 In the embodiment of the present invention Figure 1 AA section view;

[0018] Figure 4 In the embodiment of the present invention Figure 1 BB section view;

[0019] Figure 5 It is a schematic diagram of lifting operation in an embodiment of the present invention.

[0020] In the figure: 1, hook; 2, connecting part; 21, first connecting part; 22, second connecting part; 3, supporting part; 4, bent hook part; 5, supporting plate; 6, baffle; 7, arc hook; 8, lifting rope; 9, rod. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] It should be noted that, in the description of the present invention, the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0023] In addition, it should be understood that for the convenience of description, the sizes of various components shown in the drawings are not drawn according to the actual proportional relationship.

[0024] It should be noted that like reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined or described in one drawing, it will not require further detailed discussion and description in the description of the subsequent drawings.

[0025] like Figures 1 to 5 As shown, the present invention provides a technical solution: a lifting device for lifting a single bar, the lifting device comprises a hook 1, a support plate 5 and a baffle 6.

[0026] Specifically, Figures 1 to 4As shown, the hook 1 includes an integrally connected connection part 2, a supporting part 3 and a hook part 4, and the axes of the connection part 2, the supporting part 3 and the hook part 4 are all in the same horizontal plane. The connection part 2 can be divided into a first connection part 21 and a second connection part 22, the first connection part 21 is arranged opposite to the supporting part 3, and the second connection part 22 is connected to the supporting part 3. The first connection part 21, the second connection part 22 and the supporting part 3 can cooperate to form a U-shaped opening accommodating space, and a support plate 5 for supporting the end of the rod 9 is fixedly connected to the supporting part 3, and the end of the supported rod 9 is abutted against the second connection part 22. The hook part 4 extends along a first direction, the first connection part 21 is connected to the hook part 4, and the first connection part 21 and the hook part 4 can cooperate to form a hook for hanging a lifting rope 8, and the opening of the hook faces away from the hoisted rod 9.

[0027] like Figure 3 As shown, in order to enable the sling to hook the end of the rod 9 well when the sling is used for lifting a single rod, and effectively prevent the rod 9 from falling during lifting, an inner angle is formed between the second connecting portion 22 and the supporting portion 3, and the angle range of the formed inner angle is 80° to 90°. In the embodiment of the present invention, the angle of the inner angle formed between the second connecting portion 22 and the supporting portion 3 is 85°. The second connecting portion 22 and the supporting portion 3 are chamfered at the connection portion, and the arc angle of the chamfer is 30mm to 40mm, which can effectively avoid stress concentration, thereby improving the reliability and service life of the sling during lifting. In the embodiment of the present invention, the arc angle formed by the chamfer between the second connecting portion 22 and the supporting portion 3 is 35mm.

[0028] Furthermore, an arc hook 7 is provided at one end of the hook portion 4 away from the first connection portion 21, and the arc hook 7 is at the opening position of the hook to prevent the lifting rope 8 from falling off. In the embodiment of the present invention, the cross-sectional size of the hook portion 4 is 30 mm, the first connection portion 21 is bent in a direction away from the accommodating space, and the opening depth of the hook formed by the first connection portion 21 and the hook portion 4 is 140 mm and the width is 35.5 mm (in other embodiments, the cross-sectional size of the hook portion and the size of the hook buckle can be adaptively adjusted according to the specifications of the lifting rod).

[0029] like Figures 1 to 4 As shown, the support plate 5 and the baffle 6 are both located in the accommodating space, the support plate 5 is welded to the supporting portion 3, the baffle 6 is welded to the second connecting portion 22, the end of the hoisted rod 9 is placed on the support plate 5, and the end of the end of the hoisted rod 9 abuts against the baffle 6.

[0030] Furthermore, the support plate 5 is in an arc shape and is bent in a direction away from the accommodating space. The support plate 5 extends in a first direction, and the support plate 5 is adapted to the rod 9 to be hoisted. When the rod 9 is hooked on the sling, the rod 9 can be automatically centered, thereby improving the hoisting efficiency. In order to enable the sling to adapt to rods 9 of different sizes, the inner arc radius of the support plate 5 is not less than the radius of the hoisted rod 9 (the inner arc radius can range from 100mm to 300mm), the arc range of the support plate 5 is 90° to 180°, the thickness of the support plate 5 is 10mm to 20mm, and the extension length along the first direction is 80mm to 100mm (specifically, it can be adaptively adjusted according to the length of the rod 9). In an embodiment of the present invention, in order to prevent the sling from being too heavy and causing inconvenience to the staff, the inner arc radius of the support plate 5 is the same as the radius of the hoisted rod 9, the arc of the support plate 5 is 90°, the thickness of the support plate 5 is 10 mm, and the extension length along the first direction is 83.6 mm.

[0031] Furthermore, the baffle 6 is a solid circular steel plate, the radius of the baffle 6 is the same as the inner arc radius of the support plate 5, and the baffle 6 is welded to the inner arc surface of the support plate 5 along the circumferential direction, and the thickness of the baffle 6 is 10mm to 20mm, and the radius is 100mm to 300mm. The end of the end of the hoisted rod 9 abuts against the baffle 6, and the baffle 6 can effectively bear the force of the rod 9 along the axis to prevent the rod 9 from deflecting and falling during hoisting. In the embodiment of the present invention, the thickness of the baffle 6 is specifically 16mm, and the radius is 119mm.

[0032] Furthermore, the center of the baffle 6 is the central fulcrum of the sling during lifting. Along the axial direction of the second connecting part 22, the distance from the top end face of the hook portion 4 to the center of the baffle 6 is 200-500 mm, and the distance from the bottom end face of the supporting part 3 to the center of the baffle 6 is 90-200 mm. At the same time, along the first direction, the lengths of the hook portion 4 and the first connecting part 21 are both 200-500 mm, and the length of the supporting part 3 is 100-300 mm. The above arrangement can make the moment of the upper structure of the sling (i.e., the part above the center of the baffle) slightly larger than the moment of the lower structure (i.e., the part below the center of the baffle), so that the sling is slightly deflected during lifting, and the baffle 6 can always be in contact with the lifting rod, thereby improving the stability of the rod during lifting. In one embodiment of the present invention, the distance from the top end surface of the hook portion 4 to the center position of the baffle 6 is 215 mm, the distance from the bottom end surface of the supporting portion 3 to the center position of the baffle 6 is 100 mm, and along the first direction, the lengths of the hook portion 4 and the first connecting portion 21 are both 200 mm, and the length of the supporting portion 3 is 130 mm.

[0033] like Figures 1 to 4As shown, the tip and the bent part of the hook 1 are chamfered to remove the sharp edge of the hook 1 to avoid scratching the operator and improve the safety of the product.

[0034] like Figure 5 As shown, when a single bar is lifted, two slings and two lifting ropes 8 need to be prepared. At the same time, only two workers are needed to complete the lifting of a single bar. The worker first hangs the rope ends of two lifting ropes 8 (wire ropes, slings, etc. can be used as long as they can meet the normal lifting work) on the hooks of the two hooks 1, and then places the bar 9 to be lifted on the support plates 5 of the two slings, and pushes the two slings along the axial direction of the bar 9 so that the end of the bar 9 abuts against the second connecting part 22, and then directs the crane to lift. The sling in the present invention is not only convenient to operate during the bar lifting operation, but also relatively safe and stable when lifting the bar.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lifting device for lifting a single bar, characterized in that: The lifting device comprises a lifting hook (1) and a supporting plate (5), wherein: A hook (1), the hook (1) comprising a connecting portion (2), a supporting portion (3) and a hook portion (4) connected in an integral manner, wherein the axis of the connecting portion (2), the axis of the supporting portion (3) and the axis of the hook portion (4) are all located in the same horizontal plane; The connecting portion (2) can be divided into a first connecting portion (21) and a second connecting portion (22); the first connecting portion (21) is arranged opposite to the supporting portion (3); the second connecting portion (22) is connected to the supporting portion (3); the first connecting portion (21), the second connecting portion (22) and the supporting portion (3) can cooperate to form a receiving space with a U-shaped opening; the supporting portion (3) is fixedly connected with the supporting plate (5) for supporting the end of the rod (9), and the end of the supported end of the rod (9) is in contact with the second connecting portion (22); The hook portion (4) extends along a first direction, the first connecting portion (21) is connected to the hook portion (4), and the first connecting portion (21) and the hook portion (4) can cooperate to form a hook for hanging a lifting rope (8), and the opening of the hook faces away from the rod (9) being lifted.

2. A lifting device for lifting a single bar according to claim 1, characterized in that: An inner angle is formed between the second connecting portion (22) and the supporting portion (3), and the included angle range of the inner angle is 80° to 90°.

3. A lifting device for lifting a single bar according to claim 2, characterized in that: The support plate (5) is in an arc shape and is bent in a direction away from the accommodating space. The support plate (5) extends along a first direction and is adapted to the hoisted rod (9).

4. A lifting device for lifting a single bar according to claim 3, characterized in that: The inner arc radius of the support plate (5) is not less than the radius of the hoisted rod (9), and the arc range of the support plate (5) is 90° to 180°.

5. A lifting device for lifting a single bar according to claim 4, characterized in that: The inner arc radius of the support plate (5) is the same as the radius of the hoisted bar (9).

6. A lifting device for lifting a single bar according to claim 4, characterized in that: The lifting device further comprises a baffle (6), wherein the baffle (6) is located in the accommodating space and is fixedly connected to the second connecting portion (22), and the end of the end of the hoisted rod (9) abuts against the baffle (6).

7. A lifting device for lifting a single bar according to claim 6, characterized in that: The baffle plate (6) is a round steel plate, the radius of the baffle plate (6) is the same as the inner arc radius of the support plate (5), and the baffle plate (6) is welded to the inner arc surface of the support plate (5) along the circumferential direction.

8. The lifting device for lifting a single bar according to claim 1, characterized in that: The tip of the hook (1) is chamfered.

9. A lifting device for lifting a single bar according to claim 1, characterized in that: An arc hook (7) is provided at one end of the hook portion (4) away from the first connecting portion (21); the arc hook (7) is located at the opening position of the hook and is used to prevent the suspension rope (8) from falling off.

Images