Nodular cast iron pipe lining coating plug tightening device

Abstract

The utility model discloses a nodular cast iron pipe lining plug jacking device which comprises a driving mechanism, a rotating mechanism is arranged at the movable end of the driving mechanism, the other end of the rotating mechanism is connected with a push plate, and a plurality of push rods are arranged on the other side of the push plate. The push plate is arranged and connected with the push rod, under pushing of the driving mechanism, the push plate enables the push rod to abut against the plug, the push rod can exert force parallel to the length direction of the pipeline on the plug of the nodular cast iron pipe, the plug can be in parallel butt joint with a birdmouth of the nodular cast iron pipe, then the plug is jacked tightly, and cement mortar is prevented from leaking out. Meanwhile, the push plate is convenient to disassemble, and the length of the push rod can be conveniently replaced according to different pipe orifice diameters in the process of jacking plugs of the nodular cast iron pipes with different calibers, so that the nodular cast iron pipes with different calibers can be adapted.

Description

Technical Field

[0001] The utility model relates to ductile iron pipe processing equipment, in particular to a ductile iron pipe coating lining plug top tight placement. Background Art

[0002] Ductile iron pipe is a special type of cast iron pipe. Its characteristic is that a certain amount of magnesium and rare earth alloy are added to the cast iron, and a spheroidal graphite structure is formed after a special heat treatment process, thereby improving its strength and corrosion resistance. Cement mortar is set inside the ductile iron pipe as an anti-corrosion coating to enhance the corrosion resistance of the ductile iron pipe.

[0003] In the production preparation of the lining process of large-diameter ductile iron pipes, it is necessary to insert the socket plug into the socket of the ductile iron pipe to prevent the cement mortar from being thrown out during the high-speed centrifugation of the ductile iron pipe. However, the socket plug of the large-diameter ductile iron pipe is large in size and heavy in weight.

[0004] At present, the socket plugs are generally installed manually with the assistance of electric hoists and single-beam cranes. However, the diameter of the plugs for large-diameter ductile iron pipes is relatively large. During the manual installation process, it is impossible to ensure that the plugs can fit tightly against the edge of the socket, causing leakage of cement mortar and affecting the quality of the anti-corrosion lining of the ductile iron pipe. Utility Model Content

[0005] The utility model aims to solve the problems existing in the prior art and provides a ductile iron pipe lining plug which is tightly placed on the top.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: the utility model provides a ductile iron pipe lining plug tightening device, including a driving mechanism, a rotating mechanism is arranged at the movable end of the driving mechanism, a push plate is connected to the other end of the rotating mechanism, and a plurality of push rods are arranged on the outer side of the push plate.

[0007] By setting the push plate and connecting the push rod, under the push of the driving mechanism, the push plate makes the push rod abut against the plug, and the push rod can apply a force parallel to the length direction of the pipeline to the plug of the ductile iron pipe, so that the plug can be parallel to the receiving interface of the ductile iron pipe, and then tighten the plug to prevent cement mortar from leaking out. At the same time, during the coating process, air will be inflated through the inflation hole on the plug, and the rotating mechanism is also set between the driving mechanism and the push plate, so that the push rod set on the push plate can rotate to avoid the inflation hole. In addition, the setting of the push rod can also reduce the weight of the tightening device.

[0008] Furthermore, a plurality of the push rods are radially distributed with the center point of the push plate as the base point. The push rods are radially distributed on the push plate to increase the contact area between the tightening device and the plug, provide axial force to the peripheral side of the plug, avoid the plug from tilting during the tightening process, and thus make the plug close to the ductile iron pipe socket.

[0009] Furthermore, the driving mechanism is any one of a pneumatic push rod, an electric push rod and a hydraulic push rod. The existing pneumatic push rod, electric push rod or hydraulic push rod provides thrust for the jacking device.

[0010] Furthermore, the rotating mechanism includes a first connecting sleeve connected to the driving mechanism and a second connecting sleeve connected to the push plate, the first connecting sleeve is rotatably connected to the second connecting sleeve via a bearing. The push plate is connected to the driving mechanism via the rotating mechanism, thereby realizing the rotation of the push plate.

[0011] Furthermore, a connecting block is provided at the center of one side of the push plate close to the second connecting sleeve, and the connecting block is threadedly connected to the second connecting sleeve. The threaded connection between the connecting block and the rotating mechanism can be easily disassembled, and during the tightening process of the plugs of ductile iron pipes of different calibers, the length of the push rod can be conveniently changed according to different pipe orifice diameters.

[0012] Furthermore, an ear hook is provided on one side of the push plate close to the rotating mechanism, the ear hook is connected to an elastic tension rope, and the other end of the elastic tension rope is connected to an external fixed point. By providing the elastic tension rope, an upward pulling force is applied to the tightening device to keep the tightening device in a horizontal state.

[0013] Furthermore, a support assembly is provided below the driving mechanism, and a fixed base connected to an external fixed surface is provided at one end of the support assembly away from the push plate. By providing the support assembly and the fixed base, the stability of the tightening device is improved, and the driving mechanism is kept in a horizontal state, so that the plug can be tightened in parallel.

[0014] Furthermore, the support assembly includes a support panel horizontally arranged at the bottom of the driving mechanism, a support rib arranged at the bottom of the support panel, and a support base plate arranged at the same end of the support rib and the support panel, and the support base plate is connected to the fixed base.

[0015] The support panel provides a placement platform for the drive mechanism, which is convenient for connection with the support ribs; the support ribs are provided to provide support for the drive mechanism to prevent the drive mechanism from moving downward under the action of gravity; the support base plate is provided at the bottom of the drive mechanism, and the support ribs and the support panel are connected to the support base plate, so that the drive mechanism can be in a horizontal state in a cantilever state, and thus an axial force parallel to the length direction of the ductile iron pipe can be applied to the plug.

[0016] Compared with the prior art, the utility model has the following beneficial effects: 1. By setting a push plate and connecting a push rod, under the push of a driving mechanism, the push plate makes the push rod abut against the plug, and the push rod can apply a force parallel to the length direction of the pipeline to the plug of the ductile iron pipe, so that the plug can be parallel to the receiving interface of the ductile iron pipe, and then tighten the plug to prevent cement mortar from leaking out. At the same time, during the coating process, air will be inflated through the inflation hole on the plug, and a rotating mechanism is also set between the driving mechanism and the push plate, so that the push rod set on the push plate can be rotated to avoid the inflation hole. In addition, the setting of the push rod can also reduce the weight of the tightening device. 2. By setting an elastic tension rope and a support assembly, the stability of the tightening device is improved, and the tightening device is prevented from shifting during the tightening process. 3. The rotation of the push plate is realized by threading the connection block with the rotating mechanism; at the same time, the threaded connection can be conveniently disassembled. During the tightening process of the plug of ductile iron pipes of different calibers, the length of the push rod can be conveniently changed according to different pipe orifice diameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a side view of a ductile iron pipe coating plug tightly placed on top of the utility model;

[0018] Figure 2 This is a partial enlarged view of the A position where the ductile iron pipe coating plug is tightly placed on the top of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of a ductile iron pipe coating plug tightly placed on top of the utility model;

[0020] Figure 4 The utility model is a top view of a ductile iron pipe coated lining plug tightly placed on top.

[0021] In the figure: 1. driving mechanism; 2. push plate; 3. rotating mechanism; 301. first connecting sleeve; 302. second connecting sleeve; 4. push rod; 5. supporting assembly; 501. supporting rib; 502. supporting panel; 503. supporting bottom plate; 6. fixed base; 7. ear hook; 8. connecting block; 9. elastic tension rope. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the utility model to clearly and completely describe the technical solution 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 creative work are within the scope of protection of the utility model.

[0023] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as "middle", "upper", "lower", "left", "right", "inside" and "outside" 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 cannot be understood as a limitation on the present invention.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] Combine the following Figures 1 to 3 Through specific embodiments and application scenarios, a ductile iron pipe lining plug tightening device provided by an embodiment of the utility model is described in detail.

[0026] like Figure 1-3 As shown, the utility model provides a ductile iron pipe lining plug tightening device, comprising a driving mechanism 1, which is optionally a pneumatic push rod, an electric push rod or a hydraulic push rod. The active end of the driving mechanism 1 is provided with a thread for threaded connection.

[0027] The movable end of the driving mechanism 1 is provided with a rotating mechanism 3. Figure 2As shown, the rotating mechanism 3 includes a first connecting sleeve 301 and a second connecting sleeve 302, and the first connecting sleeve 301 is rotatably connected to the second connecting sleeve 302 through a bearing. The inner sides of the first connecting sleeve 301 and the second connecting sleeve 302 are both provided with threads, and the first connecting sleeve 301 is threadedly connected to the movable end of the driving mechanism 1. The second connecting sleeve 302 is threadedly connected to the connecting block 8 provided on the push plate 2, and the connecting block 8 is provided with threads. Preferably, the connecting block 8 is a bolt. One end of the connecting block 8 is welded to the push plate 2. By setting the connecting block 8 to be threadedly connected to the rotating mechanism 3, the push plate 2 can be easily disassembled. Since the diameter range of the large-diameter ductile iron pipe is 1100mm to 3000mm, only the push plate 2 connected with push rods 4 of different lengths can be replaced to adapt to ductile iron pipes of different diameters.

[0028] Several push rods 4 are arranged on the outer side of the push plate 2. Figure 3 As shown, four push rods 4 are perpendicular to each other, one end points to the center of the push plate 2, and the other end extends outward in a cross shape. The cross arrangement can provide symmetrical axial force around the plug to prevent the plug from tilting when docking the ductile iron pipe. In some embodiments, the push rods 4 can also be six arranged in a cross shape. The push rods 4 are welded to the outer surface of the push plate 2. Optionally, the push plate 2 can be a disc structure. The push rods 4 can rotate with the push plate 2 through the rotating mechanism 3. Since it is necessary to inflate inward through the inflation hole set on the plug during the ductile iron pipe lining process, when in use, the inflation hole is avoided by manually rotating the push rods 4 so as not to affect the inflation work.

[0029] Furthermore, if Figure 1 and Figure 2 As shown, an ear hook 7 is provided above the center of the push plate 2, one end of the elastic tension rope 9 is connected to the ear hook 7, and the other end can be connected to an external fixed point. The ear hook 7 is a circular closed iron ring, and the ear hook 7 is welded to the push plate 2 above the connecting block 8. The external fixed point can be a point on the column of the equipment foundation, and the other end of the elastic tension rope 9 is connected to the ear hook on the column by welding another ear hook on the column; the setting of the ear hook on the column needs to ensure that the elastic tension rope 9 is in a tensioned state. In a natural state, the top tightening device of the utility model is in a cantilever state, and will be displaced downward under the action of gravity. The setting of the elastic tension rope 9 can apply an upward pulling force to the top tightening device to keep the top tightening device in a horizontal state. In addition, when the push rod 4 is rotated to avoid the inflation hole on the plug, the push rod 4 only needs to rotate at a small angle, which will not cause the elastic tension rope 9 to break or entangle.

[0030] At the same time, if Figure 1As shown, the driving mechanism 1 is provided with a support assembly 5, which includes a support panel 502 horizontally arranged at the lower part of the driving mechanism 1, a support rib 501 arranged at the lower part of the support panel 502, and a support bottom plate 503 arranged at the same end of the support rib 501 and the support panel 502, and the support bottom plate 503 is connected to the fixed base 6. Optionally, the support panel 502 is a rectangular panel; the contact surface of the support panel 502 and the driving mechanism 1 is welded, providing a horizontal placement platform for the driving mechanism 1. A support rib 501 is arranged below the support panel 502. Preferably, the support rib 501 is a triangular plate, and the long right-angled side of the support rib 501 is welded to the other side of the support panel 502, providing a supporting force for the drive mechanism 1 to prevent the drive mechanism 1 from moving downward under the action of gravity; the support bottom plate 503 is welded to the same end face of the support rib 501 and the support panel 502, and the support bottom plate 503 is welded to the bottom end of the drive mechanism 1 at the same time. The support bottom plate 503 improves the stability of the tightening device and enables the tightening device of the utility model to maintain a horizontal state when tightening the plug.

[0031] In addition, if Figure 1 and Figure 3 As shown, a fixed base 6 is provided at the end of the jacking device. Preferably, the fixed base 6 is a C-shaped steel. The other side of the support base plate 503 is welded to the fixed base 6, and the notch of the fixed base 6 can be welded to the column of the equipment foundation. The jacking device is welded to the column of the equipment foundation through the fixed base 6, which further improves the stability of the jacking device and keeps the driving mechanism 1 in a horizontal state.

[0032] 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 ductile iron pipe lining plug tightening device, characterized in that: It comprises a driving mechanism (1), wherein a rotating mechanism (3) is arranged at the movable end of the driving mechanism (1), the other end of the rotating mechanism (3) is connected to a push plate (2), and a plurality of push rods (4) are arranged on the outer side of the push plate (2).

2. A ductile iron pipe lining plug tightening device according to claim 1, characterized in that: A plurality of push rods (4) are radially distributed with the center point of the push plate (2) as a base point.

3. A ductile iron pipe lining plug tightening device according to claim 1, characterized in that: The driving mechanism (1) is any one of a pneumatic push rod, an electric push rod and a hydraulic push rod.

4. A ductile iron pipe lining plug tightening device according to claim 1, characterized in that: The rotating mechanism (3) comprises a first connecting sleeve (301) connected to the driving mechanism (1) and a second connecting sleeve (302) connected to the push plate (2); the first connecting sleeve (301) is rotatably connected to the second connecting sleeve (302) via a bearing.

5. A ductile iron pipe lining plug tightening device according to claim 4, characterized in that: A connecting block (8) is provided at the center of one side of the push plate (2) close to the second connecting sleeve (302), and the connecting block (8) is threadedly connected to the second connecting sleeve (302).

6. A ductile iron pipe lining plug tightening device according to claim 1, characterized in that: An ear hook (7) is provided on one side of the push plate (2) close to the rotating mechanism (3), the ear hook (7) is connected to an elastic tension rope (9), and the other end of the elastic tension rope (9) is connected to an external fixed point.

7. A ductile iron pipe lining plug tightening device according to claim 1, characterized in that: A support assembly (5) is provided below the driving mechanism (1), and a fixed base (6) connected to an external fixed surface is provided at one end of the support assembly (5) away from the push plate (2).

8. A ductile iron pipe lining plug tightening device according to claim 7, characterized in that: The support assembly (5) comprises a support panel (502) horizontally arranged at the bottom of the driving mechanism (1), a support rib (501) arranged at the bottom of the support panel (502), and a support base plate (503) arranged at the same end of the support rib (501) and the support panel (502), wherein the support base plate (503) is connected to the fixed base (6).

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