Suspender joint connecting device

Abstract

The utility model discloses a suspender joint connecting device which comprises an expansion sleeve (10), an expansion core (20) and a plurality of bolts (30), the expansion sleeve (10) comprises a sleeve shell (11) and a plurality of first bosses (12), and each first boss comprises a connecting part (121) and a contact part (122); a first screw hole (13) is formed in the connecting part, and an opening seam (111) is formed in the side wall of the sleeve shell; the expansion core comprises a core shell (21) and a plurality of second bosses (22), and second screw holes (23) are formed in the second bosses; the bolt can penetrate into the first screw hole and the second screw hole, so that the expansion sleeve and the expansion core are connected together, the contact part makes contact with the inclined outer side wall of the core shell, the contact area between the contact part and the inclined outer side wall of the core shell is gradually increased along with tightening of the bolt, and therefore the pressure applied to the sleeve shell by the core shell is gradually increased; the outer side wall of the sleeve shell generates pressure on the inner wall of the suspender, so that the sleeve shell is fixed on the suspender.

Description

TECHNICAL FIELD

[0001] The utility model relates to connecting installation technical field more particularly relates to a derrick joint connecting device. BACKGROUND

[0002] As the most commonly used stage mechanical equipment, derricks are used a lot in the performance process. From the angle of transportation or storage, the length of the derrick is usually not too long, and if a longer derrick is actually needed, two or more derricks usually need to be connected.

[0003] The traditional derrick connecting mode is to pass a thin-diameter steel pipe or to weld in the middle of two derricks. These modes are simple, but also have some deficiencies, such as not being beautiful enough and being not easy to disassemble.

[0004] Therefore, new technology and equipment are needed to solve the problems existing in the prior art. CONTENT OF THE UTILITY MODEL

[0005] In view of the deficiencies of the prior art, the utility model provides a derrick joint connecting device to solve at least part of the problems existing in the prior art.

[0006] To achieve the above purpose, the utility model is implemented by the following technical solutions:

[0007] A derrick joint connecting device comprises a pull rod (10), two concave expansion plugs (20), two expansion rings (30) and two convex expansion plugs (40),

[0008] The pull rod (10) comprises a central rotating wheel (11) and two pull shafts (12) protruding and extending from both sides of the rotating wheel, and a first thread (13) is formed on the outer surface of the pull shaft (12);

[0009] The concave expansion plug (20) is integrally formed as a hollow body, comprising a flange plate (21) and a first circular table (22) connected with the flange plate, the diameter of the first circular table (22) gradually increases from far to near from the flange plate (21), and the hollow part of the concave expansion plug (20) is formed as a prism;

[0010] The expansion ring (30) is formed with a slit (31), and the diameter of the expansion ring (30) is greater than the minimum diameter of the first circular table (22) and smaller than the maximum diameter of the first circular table (22);

[0011] The convex expansion plug (40) is hollow in its entirety, including a protrusion (41) and a second frustum (42) connected to the protrusion (41). The diameter of the second frustum (42) gradually increases from near to far from the protrusion (41), with its maximum diameter being greater than the diameter of the expansion ring (30) and its minimum diameter being less than the diameter of the expansion ring (30). The protrusion (41) is prism-shaped like the hollow part of the concave expansion plug (20), but slightly smaller in size, so that it can be inserted into the hollow part of the concave expansion plug (20). A second thread (4) is formed on the hollow inner surface of the convex expansion plug (40). 3) The second thread (43) can engage with the first thread (13), so that the two pull shafts (12) pass through a concave expansion plug, an expansion ring (30) and a convex expansion plug (40) respectively, so that they can engage with the first thread (13) of the second thread (43), bringing the distance between the concave expansion plug (20) and the convex expansion plug (40) closer. The side surfaces of the first frustum (22) and the second frustum (42) contact the expansion ring (30), making the diameter of the expansion ring (30) larger, thereby squeezing the inner wall of the rod and achieving fixation with the inner wall of the rod.

[0012] According to the embodiments of this utility model, the prism shape is a quadrangular prism, a pentagonal prism, or a hexagonal prism.

[0013] According to an embodiment of the present invention, a groove is formed on the outer periphery of the rotating wheel (11).

[0014] According to an embodiment of the present invention, a groove is formed on the outer periphery of the flange (21).

[0015] According to an embodiment of the present invention, the height of the protrusion (41) protruding from the second frustum (42) is greater than the width of the expansion ring (30). Attached Figure Description

[0016] Figure 1 An exploded structural diagram of the boom joint connection device according to an embodiment of this utility model; and

[0017] Figure 2 This is a schematic diagram of the planar structure of the rod connector connection device according to an embodiment of the present utility model.

[0018] In the diagram: 10-Pull rod; 11-Roller; 12-Pull shaft; 13-First thread; 20-Expansion plug; 21-Flange; 22-First frustum; 30-Expansion ring; 31-Slot; 40-Protruding expansion plug; 41-Protrusion; 42-Second frustum; 43-Second thread; 100-Lifting rod Detailed Implementation

[0019] With reference to the accompanying drawings, the technical solutions in the embodiments of the present application will be clearly and completely described below, obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0020] Figure 1 It is an exploded structural schematic view of the boom joint connecting device according to the embodiment of the present application. Figure 2 It is a plan structural schematic view of the boom joint connecting device according to the embodiment of the present application. With reference to the accompanying drawings, the boom joint connecting device of the embodiment comprises a pull rod (10), two concave expansion plugs (20), two expansion rings (30) and two convex expansion plugs (40), wherein the concave expansion plugs (20), the expansion rings (30) and the convex expansion plugs (40) are symmetrically connected on both sides of the pull rod (10), thereby forming the combined device of the embodiment.

[0021] The various specific components of the boom joint connecting device of the embodiment will be described in more detail below with reference to the accompanying drawings.

[0022] As shown in the drawings, the pull rod (10) comprises a central rotating wheel (11) and two pull shafts (12) protruding and extending from both sides of the rotating wheel, the pull shaft (12) is in a cylindrical shape, a first thread (13) is formed on the outer surface of the pull shaft (12) for cooperating with a second thread below. A clamping groove can also be formed on the outer periphery of the rotating wheel (11) to facilitate the installation of the boom joint connecting device, for example, to facilitate the use of a wrench to clamp the pull rod.

[0023] The concave expansion plug (20) is formed as a whole hollow, comprising a flange plate (21) and a first circular table (22) connected with the flange plate. The diameter of the first circular table (22) gradually increases from far to near to the flange plate (21). The diameter of the flange plate (21) is greater than that of the first circular table (22). A clamping groove can also be formed on the outer periphery of the flange plate (21) to facilitate the installation of the boom joint connecting device, for example, to facilitate the use of a wrench to clamp the flange plate (21). The hollow part of the concave expansion plug (20) is formed as a prism, which is shown in the drawings. Of course, it can also be formed as a pentagonal prism and a hexagonal prism and other shapes.

[0024] The expansion ring (30) is formed with a slit (31) and is hollow inside. The diameter of the expansion ring (30) is greater than the minimum diameter of the first circular table (22) and less than the maximum diameter of the first circular table (22). In this way, the expansion ring (30) can be sleeved on the side surface of the first circular table (22) and in contact therewith.

[0025] The convex plug (40) is formed as a whole to be hollow, including a convex block (41) and a second circular cone (42) connected to the convex block (41).

[0026] The second circular cone (42) gradually increases in diameter from the convex block (41) to the outside, and the maximum diameter is greater than the diameter of the expansion ring (30), and the minimum diameter is less than the diameter of the expansion ring (30), and the minimum diameter of the second circular cone (42) is generally greater than the cross-sectional size of the convex block (41). The convex block (41) is formed as a prism (four prisms are shown in the figure) same as the hollow part of the concave plug (20), but the size is slightly smaller, so it can be inserted into the hollow part of the concave plug (20). The convex block (41) and the hollow part of the concave plug (20) are formed as a prism, so that relative rotation between the convex plug (40) and the concave plug (20) can be prevented during assembly of the device. In addition, in one embodiment, the height of the convex block (41) protruding from the second circular cone (42) can be greater than the width of the expansion ring (30), so that the expansion ring (30) will not hinder the insertion of the convex block (41) into the concave plug (20) even in the initial state of assembly without tension.

[0027] The hollow inner surface of the convex plug (40) is also formed with a second thread (43) which can cooperate with the first thread (13), that is, when the pull shaft (12) passes through the concave plug (20), the expansion ring (30) and enters the convex plug (40) in turn, the first thread (13) on the pull shaft (12) can cooperate with the second thread (43), thereby pulling / away the distance between the concave plug (20) and the convex plug (40). For example, the side surface of the first circular cone (22) and the second circular cone (42) contacts the expansion ring (30), so when pulled, the rotating wheel (11) of the pull shaft (12) extrudes the flange plate (21) of the concave plug (20), pulls the distance between the concave plug (20) and the convex plug (40), and further extrudes the expansion ring (30), so that the slit (31) becomes larger, the diameter of the expansion ring (30) also becomes larger, and the outer surface of the expansion ring (30) further extrudes the inner wall of the hanger (100), achieving fixation with the hanger inner wall.

[0028] In use, the recessed expansion plug (20), the expansion ring (30) and the convex expansion plug (40) are initially connected symmetrically on both sides of the pull rod (10) in sequence by the cooperation of the first thread (13) and the second thread (43). Then the entire connecting device is inserted into the pipe head of the two hangers (100), and the rotating wheel (11) and the flange plate (21) are left outside; for one side, the flange plate (21) is clamped with a crescent wrench, and the other wrench clamps the rotating wheel (11), the pull rod is rotated, the pull rod is threaded, and the convex expansion plug (40) is pulled close to the recessed expansion plug (20) when the pull rod is rotated, the surfaces of the recessed and convex expansion plugs are both tapered slopes, after the distance is pulled close, the diameter of the middle opening expansion ring (30) becomes larger, thereby tightly fitting with the inner wall of the hanger (100); for the other side, the operating principle is basically similar to the above-mentioned side, the difference is that the rotating wheel can be clamped with a crescent wrench to fix the pull rod at this time, and the other wrench clamps the flange plate (21) to rotate the recessed expansion plug (20); thereby realizing the tight connection of the two hangers.

[0029] The above is only the preferred embodiment of the patent, it should be pointed out that for those skilled in the art, without departing from the patent, several improvements can also be made, which should be considered as the protection scope of the patent.

Claims

1. A derrick joint connection apparatus, characterized by, The utility model relates to a kind of hoisting rod, including: Pull rod (10), two concave expansion plugs (20), two expansion rings (30) and two convex expansion plugs (40), Wherein, pull rod (10) includes central rotating wheel (11) and two pull shafts (12) protruding and extending from rotating wheel two sides, first thread (13) is formed on the outer surface of pull shaft (12); Concave expansion plug (20) is formed as a whole hollow, including flange (21) and the first circular table (22) connected with flange, the diameter of first circular table (22) gradually increases from far to near distance flange (21), and the hollow portion of concave expansion plug (20) is formed as prism shape; Expansion ring (30) is formed with slit (31), and the diameter of expansion ring (30) is greater than the minimum diameter of first circular table (22) and less than the maximum diameter of first circular table (22); Convex expansion plug (40) is formed as a whole hollow, including protruding block (41) and the second circular table (42) connected with protruding block (41), and the diameter of second circular table (42) gradually increases from near to far distance protruding block (41), and the maximum diameter thereof is greater than the diameter of expansion ring (30), and the minimum diameter thereof is less than the diameter of expansion ring (30);Protruding block (41) is formed with the same prism shape as the hollow portion of concave expansion plug (20), but slightly smaller in size, so that it can be inserted into the hollow portion of concave expansion plug (20);Second thread (43) is formed on the inner surface of the hollow of convex expansion plug (40), and the second thread (43) can be matched with first thread (13), so that two pull shafts (12) pass through one concave expansion plug, one expansion ring (30) and one convex expansion plug (40) in sequence respectively, so that the distance between concave expansion plug (20) and convex expansion plug (40) can be pulled close by the matching of first thread (13) and second thread (43), and the side surface of first circular table (22) and second circular table (42) contacts expansion ring (30), so that the diameter of expansion ring (30) is increased to press the inner wall of hoisting rod (100), to realize the fixation with the inner wall of hoisting rod.

2. The boom joint connection apparatus of claim 1, wherein: The prism shape is four-prism, five-prism or six-prism.

3. The boom joint connection apparatus of claim 1, wherein: Clamping groove is formed on the outer periphery of rotating wheel (11).

4. The boom joint connection apparatus of claim 1, wherein: Clamping groove is formed on the outer periphery of flange (21).

5. The boom joint connection apparatus of claim 1, wherein: The height of protruding block (41) from second circular table (42) is greater than the width of expansion ring (30).

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