A self-locking clamping claw hanger for ductile iron pipe fittings

Abstract

The utility model discloses a self-locking clamping jaw sling for ductile iron pipe fittings, comprising a suspension rod, a connecting rod, a first C-shaped clamping jaw and a second C-shaped clamping jaw; the suspension rod is in an inverted "T" shape, with a suspension hole provided on the upper part, and the two ends of the lower part are respectively rotatably connected with a connecting rod end; the first C-shaped clamping jaw comprises a first connecting rod part and a first clamping jaw part, and a first handle is provided at the junction of the first connecting rod part and the first clamping jaw part; the second C-shaped clamping jaw comprises a second connecting rod part and a second clamping jaw part, and a second handle is provided on the upper part of the second connecting rod part; the first connecting rod part is rotatably connected with the middle part of the second connecting rod part, and the outer ends of the two are respectively rotatably connected with the other ends of the two connecting rods; the first handle and the second handle are located on the same side, and the first clamping jaw part corresponds to the second clamping jaw part. The application of the utility model can replace the manual handling of ductile iron pipe fittings, effectively reduce the labor intensity of the operators in handling, and at the same time can reduce the frequent replacement of the sling when changing the type of pipe fittings, reduce costs, and improve efficiency.

Description

Technical Field

[0001] The utility model relates to the field of slings, in particular to a ductile iron pipe self-locking clamping claw sling. Background Art

[0002] Ductile iron pipe fittings usually have a pipe in the middle and flanges at the ends for connection. Ductile iron pipe fittings come in many shapes and diameters, such as straight pipes, elbows (90° / 45° / 30° / 22.5° / 11.25°), and tees with diameters of DN300 to DN40. These pipe fittings have large differences in shape and require many processing steps, including grinding and machining. One of the most common operations is to move workpieces up and down. Currently, they are mainly transported by manpower, which is labor-intensive and has high safety risks. They can also be transported by lifting tools with clamps, but the clamps need to provide clamping force through external power sources (such as hydraulic cylinders, etc.), which are complex in structure and costly. Utility Model Content

[0003] In view of the technical problems existing in the background technology, the utility model provides a self-locking clamping claw hanger for ductile iron pipe fittings, which can replace the manual handling of ductile iron pipe fittings, effectively reduce the labor intensity of operators in handling, and at the same time can reduce the frequent replacement of hangers when changing the type of pipe fittings, thereby reducing costs and improving efficiency.

[0004] The technical solution of the utility model to solve the technical problem is as follows:

[0005] The utility model discloses a self-locking clamping jaw hanger for ductile iron pipe fittings, which comprises a hanger rod, a connecting rod, a first C-shaped clamping jaw and a second C-shaped clamping jaw; the hanger rod is in an inverted "T" shape, a hanger hole is provided on the upper part, and the two ends of the lower part are respectively rotatably connected with one end of the connecting rod; the first C-shaped clamping jaw comprises a first connecting rod part and a first clamping jaw part, and a first handle is provided at the junction of the first connecting rod part and the first clamping jaw part; the second C-shaped clamping jaw comprises a second connecting rod part and a second clamping jaw part, and a second handle is provided on the upper part of the second connecting rod part; the first connecting rod part is rotatably connected with the middle part of the second connecting rod part, and the outer ends of the two are respectively rotatably connected with the other ends of the two connecting rods; the first handle and the second handle are located on the same side, and the first clamping jaw part corresponds to the second clamping jaw part.

[0006] Preferably, the first pin holes are respectively opened at both ends of the lower part of the suspension rod, the second pin holes are respectively opened at both ends of the connecting rod, the third pin hole and the fourth pin hole are respectively opened at the upper end and the middle part of the second connecting rod, the fifth pin hole and the sixth pin hole are respectively opened at the upper end and the middle part of the first connecting rod, the two first pin holes at the lower part of the suspension rod are respectively connected to the second pin holes of the two connecting rods, the second pin holes at the other ends of the two connecting rods are respectively connected to the third pin hole of the second connecting rod and the fifth pin hole of the first connecting rod, and the sixth pin hole of the first connecting rod and the fourth pin hole of the second connecting rod are respectively connected by connecting pins.

[0007] Preferably, the first handle and the second handle are both straight as a whole, and the outer end of the first handle is provided with a downward protrusion.

[0008] Preferably, the side surface of the connecting rod is in an "H" shape, and the lower end of the suspension rod, the upper end of the first connecting rod portion of the first C-shaped clamp and the upper end of the second connecting rod portion of the second C-shaped clamp are respectively arranged on the inner side of the end of the connecting rod.

[0009] Preferably, the ends of the first clamping jaw portion and the second clamping jaw portion are both configured to be sawtooth-shaped.

[0010] Preferably, the two connecting rods and the first C-shaped clamp and the second C-shaped clamp, which do not include the first handle and the second handle respectively, are symmetrical about the vertical center line of the boom.

[0011] Compared with the prior art, the self-locking clamping claw hanger for ductile iron pipe fittings described in the utility model has the following beneficial effects:

[0012] (1) The utility model has novel design, reasonable and concise structure, simple manufacture, easy operation, low cost and good use effect;

[0013] (2) The utility model forms a connecting rod locking mechanism through a suspension rod, a connecting rod, a first C-shaped clamping claw and a second C-shaped clamping claw, and can conveniently and quickly loosen and clamp the sling by using its own weight and two handles, which is very convenient;

[0014] (3) When lifting ductile iron pipe fittings, the utility model can clamp flanges, and the opening size can be adjusted arbitrarily, so workpieces of different sizes and shapes can be clamped, and the versatility is good;

[0015] (4) The utility model utilizes the self-locking characteristics of the connecting rod mechanism, reasonably determines the dimensions of each component, and automatically locks the workpiece through its own weight. The surface of the clamping jaw that is in direct contact with the workpiece is made into a serrated shape to increase the friction between the clamping jaw and the workpiece, thereby ensuring that the workpiece will not automatically disengage during swinging or hanging, thereby effectively improving the safety of the sling. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the suspension rod in the utility model;

[0018] Figure 3 It is a structural schematic diagram of the connecting rod in the utility model;

[0019] Figure 4 It is a side view structural diagram of the connecting rod in the utility model;

[0020] Figure 5 It is a structural schematic diagram of the connecting pin in the utility model;

[0021] Figure 6 It is a structural schematic diagram of the second C-shaped clamping jaw in the utility model;

[0022] Figure 7 It is a structural schematic diagram of the first C-shaped clamp in the utility model;

[0023] In the figure: 1, lifting rod; 11, lifting hole; 12, first pin hole; 2, connecting rod; 21, second pin hole; 3, connecting pin; 4, second C-type clamp; 41, second connecting rod part; 42, second clamping jaw part; 43, second handle; 44, third pin hole; 45, fourth pin hole; 5, first C-type clamp; 51, first connecting rod part; 52, first clamping jaw part; 53, first handle; 54, protrusion; 55, fifth pin hole; 56, sixth pin hole. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Unless otherwise defined, the technical terms or scientific terms used herein should be the usual meanings understood by people with general skills in the field to which the disclosure belongs. The "upper", "lower", "left", "right", "front", "back", "inside", "outside" and the like used in the patent application specification and claims of the present disclosure are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship also changes accordingly. The places not described in detail in the utility model are all known technologies of technicians in the technical field.

[0025] As shown in the accompanying drawings, the utility model is a self-locking clamp hanger for ductile iron pipe fittings, which includes a hanger 1, a connecting rod 2, a first C-type clamp 5 and a second C-type clamp 4; the hanger 1 is in an inverted "T" shape, and a hanger hole 11 is provided on the upper part, and the two ends of the lower part are respectively rotatably connected to the end of one of the connecting rods 2; the first C-type clamp 5 includes a first connecting rod part 51 and a first clamping jaw part 52, and a first handle 53 is provided at the junction of the first connecting rod part 51 and the first clamping jaw part 52; the second C-type clamp 4 includes a second connecting rod part 41 and a second clamping jaw part 42, and a second handle 43 is provided on the upper part of the second connecting rod part 41; the first connecting rod part 51 is rotatably connected to the middle part of the second connecting rod part 41, and the outer ends of the two are respectively rotatably connected to the other ends of the two connecting rods 2; the first handle 53 and the second handle 43 are located on the same side, and the first clamping jaw part 52 corresponds to the second clamping jaw part 42. In this embodiment, a connecting rod structure is formed by the suspension rod 1, the connecting rod 2, the first C-type clamp 5 and the second C-type clamp 4. After the first clamp portion 52 and the second clamp portion 42 clamp the workpiece correspondingly, the workpiece can be locked by its own weight. The setting of the first handle 53 and the second handle 43 facilitates the opening and closing of the first clamp portion 52 and the second clamp portion 42, and the operation is convenient.

[0026] In this embodiment, in order to facilitate the assembly of the self-locking clamp hanger for ductile iron pipe fittings, first pin holes 12 are respectively opened at both ends of the lower part of the hanger 1, second pin holes 21 are respectively opened at both ends of the connecting rod 2, third pin holes 44 and fourth pin holes 45 are respectively opened at the upper end and middle part of the second connecting rod part 41, fifth pin holes 55 and sixth pin holes 56 are respectively opened at the upper end and middle part of the first connecting rod part 51, the two first pin holes 12 at the lower part of the hanger 1 and the second pin holes 21 of the two connecting rods 2, the second pin holes 21 at the other ends of the two connecting rods 2 and the third pin holes 44 of the second connecting rod part 41 and the fifth pin holes 55 of the first connecting rod part 51, and the sixth pin hole 56 of the first connecting rod part 51 and the fourth pin hole 45 of the second connecting rod part 41 are rotatably connected through connecting pins 3.

[0027] In this embodiment, the first handle 53 and the second handle 43 are both straight as a whole, and a downward protrusion 54 is provided at the outer end of the first handle 53. When the operator opens and closes the clamp mouth through the two handles, the back of the operator's hand can be blocked to facilitate operation.

[0028] In this embodiment, the side surface of the connecting rod 2 is in an "H" shape, and the lower end of the suspension rod 1, the upper end of the first connecting rod portion 51 of the first C-shaped clamp 5 and the upper end of the second connecting rod portion 41 of the second C-shaped clamp 4 are respectively arranged on the inner side of the end of the connecting rod 2 for easy assembly.

[0029] In this embodiment, the ends of the first clamping jaw portion 52 and the second clamping jaw portion 42 are both configured to be serrated, which increases the friction between the clamping jaws and the workpiece, thereby ensuring that the workpiece will not automatically disengage during swinging or hanging, and effectively improving the safety of the sling.

[0030] In this embodiment, the two connecting rods 2 and the first C-shaped clamp 5 and the second C-shaped clamp 4 which do not include the first handle 53 and the second handle 43 respectively are symmetrical about the vertical center line of the suspension rod 1 .

[0031] When in use, the lifting hole 11 of the suspension rod 1 is connected to the lifting equipment (such as a pneumatic balance crane), and the operator holds the first handle 53 and the second handle 43 of the first C-type clamp 5 and the second C-type clamp 4, opens the two C-type clamp openings, clamps the first clamping jaw 52 of the first C-type clamp 5 on the back of the flange of the workpiece, and clamps the second clamping jaw 42 of the second C-type clamp 4 in the inner cavity of the workpiece. At this time, the lifting equipment is started and raised, and the connecting rod mechanism will automatically lock the workpiece by the dead weight of the workpiece. After the lifting is in place, the two C-type clamp openings can be easily opened by the two handles.

Claims

1. A self-locking clamping claw hanger for ductile iron pipe fittings, characterized in that: It comprises a suspension rod (1), a connecting rod (2), a first C-shaped clamping jaw (5) and a second C-shaped clamping jaw (4); the suspension rod (1) is in an inverted "T" shape, with a suspension hole (11) provided on its upper part, and two ends of its lower part are respectively rotatably connected to the end of one of the connecting rods (2); the first C-shaped clamping jaw (5) comprises a first connecting rod part (51) and a first clamping jaw part (52), and a first handle (53) is provided at the junction of the first connecting rod part (51) and the first clamping jaw part (52); the second The C-shaped clamp (4) comprises a second connecting rod portion (41) and a second clamping jaw portion (42); a second handle (43) is provided on the upper portion of the second connecting rod portion (41); the first connecting rod portion (51) is rotatably connected to the middle portion of the second connecting rod portion (41), and the outer ends of the two are rotatably connected to the other ends of the two connecting rods (2) respectively; the first handle (53) and the second handle (43) are located on the same side, and the first clamping jaw portion (52) corresponds to the second clamping jaw portion (42).

2. A self-locking clamp hanger for ductile iron pipe fittings according to claim 1, characterized in that: The two ends of the lower part of the suspension rod (1) are respectively provided with a first pin hole (12), the two ends of the connecting rod (2) are respectively provided with a second pin hole (21), the upper end and the middle part of the second connecting rod part (41) are respectively provided with a third pin hole (44) and a fourth pin hole (45), the upper end and the middle part of the first connecting rod part (51) are respectively provided with a fifth pin hole (55) and a sixth pin hole (56), the two first pin holes (12) at the lower part of the suspension rod (1) are respectively connected to the second pin holes (21) of the two connecting rods (2), the second pin holes (21) at the other ends of the two connecting rods (2) are respectively connected to the third pin hole (44) of the second connecting rod part (41) and the fifth pin hole (55) of the first connecting rod part (51), and the sixth pin hole (56) of the first connecting rod part (51) is respectively connected to the fourth pin hole (45) of the second connecting rod part (41) through a connecting pin (3).

3. A self-locking clamp hanger for ductile iron pipe fittings according to claim 1, characterized in that: The first handle (53) and the second handle (43) are both straight as a whole, and a downward protrusion (54) is provided at the outer end of the first handle (53).

4. A self-locking clamp hanger for ductile iron pipe fittings according to claim 1, characterized in that: The side surface of the connecting rod (2) is in an "H" shape, and the lower end of the suspension rod (1), the upper end of the first connecting rod portion (51) of the first C-shaped clamp (5) and the upper end of the second connecting rod portion (41) of the second C-shaped clamp (4) are respectively arranged on the inner side of the end of the connecting rod (2).

5. A self-locking clamp hanger for ductile iron pipe fittings according to claim 1, characterized in that: The ends of the first clamping jaw portion (52) and the second clamping jaw portion (42) are both configured to be sawtooth-shaped.

6. A self-locking clamp hanger for ductile iron pipe fittings according to claim 1, characterized in that: The two connecting rods (2) and the first C-shaped clamp (5) and the second C-shaped clamp (4) which do not include the first handle (53) and the second handle (43) respectively are symmetrical about the vertical center line of the suspension rod (1).

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