Grooved steel pipe disassembly auxiliary tools

Abstract

A grooved steel pipe disassembly auxiliary tool, including a sleeve and a handle; the front end of the sleeve has a chamfered corner on the outside, the front end of the sleeve has a rounded corner on the inside, the outer wall of the sleeve is a cylindrical surface, the inner wall of the sleeve is a stepped shape with a thin front part and a thick rear part, the sleeve is composed of two semicircular ring arc plates connected together, the upper parts of the two semicircular ring arc plates are connected by a sleeve connecting assembly, the lower parts of the two semicircular ring arc plates are provided with mutually meshing teeth and tooth grooves, and the side walls of the two semicircular ring arc plates are provided with hinge holes; the handle is a semicircular arc rod structure, composed of two semi-arc rods connected together, the upper parts of the two semi-arc rods are hinged by a sleeve pin, the lower parts of the two semi-arc rods are hinged to the outer end of the connecting rod, and the inner end of the connecting rod is hinged to the middle of the hinge hole. The present invention is easy to disassemble during operation, and the present invention effectively improves the efficiency of pipeline disassembly. At the same time, it can improve the efficiency of reuse of connector assembly parts and reduce the cost of use.

Description

Technical Field

[0001] The invention belongs to pipeline disassembly tools, and in particular relates to a grooved steel pipe disassembly auxiliary tool. Background Art

[0002] In modern warfare, the main way to ensure wartime oil supply is to transport it through oil pipelines. Ensuring that the oil pipeline reaches the designated location in a timely and accurate manner to ensure the smooth flow of oil during wartime is a basic task that must be done in military struggle preparation. For pipelines that are frequently connected and disassembled to replace the transportation site in large quantities, frequent connection and disassembly operations are performed between the pipeline and the connector. The socket connector 12 (referred to as the connector) is a middle connecting pipeline connector for connecting steel infusion pipelines. The socket connector includes a connector body, and the assembly parts of the connector are a sealing rubber ring 14, a steel locking ring 13, and a sponge rubber strip 15. The steel locking ring is an elastomer. The steel locking ring 13 is usually in a natural state in the socket connector body. The inner diameter of the steel locking ring in the natural state is smaller than the outer diameter of the end of the grooved steel pipe. The grooved steel pipe 11 is composed of a pipe body and a groove head at both ends of the pipe body. There is an annular groove in the middle of the groove head, and the groove head clamp 16 is installed in the annular groove to form a grooved steel pipe assembly. In order to prevent the oil pipeline from being opened and damaged during long-term use in the field, a double socket connector that is designed to be anti-theft and easy to connect is designed. The connector has built-in steel locking rings and other assembly parts. The pipeline and the connector are easy to connect, but it is difficult or even impossible to disassemble directly by hand. At this time, a method of convenient disassembly with the help of special tools is urgently needed to improve work efficiency. Summary of the invention

[0003] The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art and to provide a grooved steel pipe disassembly auxiliary tool with a simple structure, convenient use and reasonable design.

[0004] The technical solution of the present invention is: comprising a sleeve and a handle;

[0005] The front end of the sleeve has a chamfered corner on the outside, the front end of the sleeve has a rounded corner on the inside, the outer wall of the sleeve is a cylindrical surface, the inner wall of the sleeve is a stepped shape with a thin front part and a thick rear part, the sleeve is formed by two semicircular ring arc plates connected together, the upper parts of the two semicircular ring arc plates are connected by a sleeve connecting assembly, the lower parts of the two semicircular ring arc plates are provided with mutually meshing teeth and tooth grooves, and the side walls of the two semicircular ring arc plates are provided with hinge holes;

[0006] The handle is a semicircular arc rod structure, which is composed of two half arc rods connected together. The upper parts of the two half arc rods are hinged through sleeve pins, the lower parts of the two half arc rods are hinged to the outer ends of the connecting rods, and the inner ends of the connecting rods are hinged to the middle of the hinge holes.

[0007] When the handle is lifted, the two semicircular ring arc plates are opened, and when the handle is lowered, the two semicircular ring arc plates are closed.

[0008] The lower parts of the two half arc rods are two ear structures, and the connecting rod is arranged between the two ear structures.

[0009] A groove is provided in the middle of the upper ends of the two semicircular arc plates; the connecting assembly includes a connecting block and a sleeve pin, one end of the connecting block is placed in the groove of one semicircular arc plate, and the other end of the connecting block is placed in the groove of the other semicircular arc plate.

[0010] The hinge holes are oblong holes radially arranged along the two semicircular arc plates.

[0011] The length of the oblong hole is no more than twice the length of the connecting rod, and is estimated to be 1.5 times.

[0012] When two semicircular ring arc plates are butt-jointed to form a sleeve, the hinge hole is located at the lower part of the horizontal axis section of the sleeve. The hinge hole is located in the middle and lower part, and its function is ( Figure 4 As shown in the figure, lift the handle and slowly open the two semicircular ring arc plates of the sleeve through the connecting rod. When a certain opening is opened, the hinge hole is located at the lower part of the horizontal axis section of the sleeve and can be opened until the outer diameter of the grooved steel pipe is fully opened, and then separated from the grooved steel pipe; the second function is that when the opened detachable sleeve is put on the outer diameter of the grooved steel pipe, when the detachable sleeve is put on the outer diameter of the grooved steel pipe, the handle is released, and the two semicircular ring arc plates automatically connect to form a sleeve under the action of their own weight, as shown in the figure. Figure 5 As shown, under the action of the handle's own weight, the connecting rod moves downward, and the hinge hole is set in the lower middle part. At this time, the sleeve has a force acting toward the closing state.

[0013] The rear ends of the two semicircular arc plates each have a half-circle flange, the upper part of the half-circle flange of the semicircular arc plate has an upper flat part, and the lower part of the half-circle flange of the semicircular arc plate has a lower flat part; when the two semicircular arc plates are closed and docked to form a sleeve, the lower flat part of the lower part of the two semicircular arc plates forms a support part; when the two semicircular arc plates are docked to form a sleeve, the half-circle flanges at the rear ends of the two semicircular arc plates are docked to form a circle of flanges. When placed on a flat surface, the lower flat part plays a supporting role. If it is round, it is unstable and the handle may rotate to one side. When it needs to be lifted for work, it is not convenient to lift the handle directly; the upper flat part is convenient for the two semicircular arc plates to be flipped up to the outside without mutual interference.

[0014] When disassembly is carried out, the front end of the sleeve contacts the outer circle of the groove head of the grooved steel pipe, the middle part of the sleeve is suspended in the air, and the inner circle of the flange at the rear end of the sleeve contacts the outer circle of the grooved steel pipe body.

[0015] In the present invention, the connecting rod is hinged at the middle of the hinge hole, so that when the handle is lifted, the inner end of the connecting rod rotates around the pin shaft and is lifted upward. Since the inner end of the connecting rod is hinged at the middle of the hinge hole with the two semicircular ring arc plates, the two semicircular ring arc plates are relatively opened when the connecting rod lifts them. During the lifting process, no matter how much the two semicircular ring arc plates are opened, the connecting rod does not interfere with the two semicircular ring arc plates in the hinge hole; when the inner holes of the two semicircular ring arc plates ride on the outer diameter of the steel pipe, the hand slowly relaxes the handle, and the two semicircular ring arc plates are opened. The circular arc plate slowly closes under the action of its own weight, and under the action of the inner end of the connecting rod, its outer end drives the two handles to move downward. When the two semi-circular arc plates are closed, the teeth and the tooth grooves engage with each other, and they can move inward and outward at the same time in the axial direction. The hand continues to relax the handle, and the inner end of the connecting rod rotates downward around the hinge pin to the lower edge of the hinge hole, so that the two semi-circular arc plates are in a closed state. There is no external force to open them outward, and the two semi-circular arc plates are always in a closed state.

[0016] The present invention is convenient to disassemble during operation, and the present invention effectively improves the efficiency of pipeline disassembly. At the same time, it can improve the efficiency of reusing connector assembly parts and reduce the use cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the present invention;

[0018] Figure 2 yes Figure 1 The main view of

[0019] Figure 3 yes Figure 1 A top view of

[0020] Figure 4 This is one of the use state diagrams of the present invention (starting to lift up from the grooved steel pipe);

[0021] Figure 5 This is the second use state diagram of the present invention (the sleeve extends into the annular gap between the inner hole of the connector to be disassembled and the outer diameter of the grooved steel pipe);

[0022] Figure 6 yes Figure 5 A cross-sectional view of

[0023] Figure 7 It is a diagram of the initial state of disassembly using the present invention;

[0024] Figure 8 This is a schematic diagram of the disassembly process using the present invention;

[0025] Fig. 9 is a second schematic diagram of the disassembly process using the present invention;

[0026] Fig.10 It is a schematic diagram of two semicircular ring arc plates 6 being opened;

[0027] Fig.11 yes Figure 7 Rear view of. DETAILED DESCRIPTION

[0028] Figure 1 , 2 In , 3, the outer side of the front end of the sleeve has a chamfered corner 61, and the inner side of the front end of the sleeve has a chamfered corner 62. The chamfered corners 61 and 62 form a circle for the working head to be inserted into the annular gap between the inner hole of the connector 12 to be disassembled and the outer diameter of the grooved steel pipe. The inclination angle of the chamfered corner is about 37°. The outer wall of the sleeve is a cylindrical surface, and the inner wall of the sleeve is a stepped shape with a thin front part and a thick rear part. The sleeve is formed by two semicircular annular arc plates 6 butted together. The upper parts of the two semicircular annular arc plates 6 are connected by a sleeve connecting assembly. The lower parts of the two semicircular annular arc plates 6 are provided with mutually meshing teeth and tooth grooves. The side walls of the two semicircular annular arc plates 6 are opened through the center and the lower part. The handle 1 is a semicircular arc rod-shaped structure, which is formed by two semi-arc rods 4 butted together. The upper parts of the two semi-arc rods 4 are hinged by the sleeve pin 2. The lower parts of the two semi-arc rods 4 are hinged to the outer ends of the connecting rods 7, and the inner ends of the connecting rods 7 are hinged to the middle of the hinge holes. A groove is provided in the middle of the upper end of the two semicircular arc plates 6; the connecting assembly includes a connecting block 3 and a sleeve pin 5, one end of the connecting block 3 is placed in the groove of one semicircular arc plate 6, and the other end of the connecting block 3 is placed in the groove of the other semicircular arc plate 6.

[0029] The working process of the present invention is further described below by two embodiments:

[0030] Embodiment 1: Figure 4 , 5 In 6, the conical surface at the front end of the sleeve extends into the annular gap between the mounting hole of the double socket connector 12 and the outer diameter of the groove head of the grooved steel pipe 11. The rear ends of the two semicircular ring arc plates 6 each have a half-circle flange, the upper part of the half-circle flange 64 of the semicircular ring arc plate 6 has an upper flat part 65, and the lower part of the half-circle flange 64 of the semicircular ring arc plate 6 has a lower flat part 63. When the two semicircular ring arc plates 6 are closed and docked to form a sleeve, the lower flat part 63 at the lower part of the two semicircular ring arc plates 6 forms a support part; when the two semicircular ring arc plates 6 are docked to form a sleeve, the half-circle flanges at the rear ends of the two semicircular ring arc plates 6 are docked to form a circle of flanges. In the figure, 4 is a semi-arc rod, 3 is a connecting block, 2 is a sleeve pin, 7 is a connecting rod, and 14 is a sealing rubber ring.

[0031] Embodiment 2: Figure 7 , 89, the left grooved steel pipe assembly is dismantled to the left during: the conical surface of the sleeve front end extends into the annular gap between the mounting hole of the double-socket connector 12 and the outer diameter of the groove head 111 of the grooved steel pipe 11, the left grooved steel pipe assembly moves to the right until the groove head end face faces the shoulder 206 of the double-socket connector 12, the detachable sleeve continues to move to the right until the inner diameter of the steel locking ring 2 expands to the outer circle 404 of the groove head clamping ring, then the grooved steel pipe assembly moves to the left, the inner diameter of the steel locking ring 2 turns over the outer circle 404 of the groove head clamping ring, then the left grooved steel pipe assembly moves to the left, the inner diameter of the steel locking ring 2 shrinks along the outer circle inclined surface of the groove head clamping ring under the action of elasticity, the inner lip 302 of the tip of the inner lip edge 303 of the sealing rubber ring begins to separate from the outer circle of the grooved steel pipe, and continues to move to the left until the inner convex truncated cone 301 of the inner diameter of the sealing rubber ring contacts the groove head end face of the assembly, and then moves to the left (such as Fig. 9 ) The inner lip 302 at the tip of the inner lip edge 303 of the sealing rubber ring is completely separated from the outer circle of the grooved steel pipe. The inner diameter of the steel locking ring 2 is elastically contracted from the outer circle inclined surface to the outer circle of the grooved steel pipe, and then continues to move to the left. The left grooved steel pipe assembly is completely separated from the double socket connector 12.

[0032] Fig.10 , 11 In use, lift the handle 1, the two semi-circular ring sleeves open and ride on the outer diameter of the grooved steel pipe 11, put down the handle, and the two semi-circular ring arc plates 6 automatically close to form a sleeve (such as Figure 4 ).

Claims

1. A grooved steel pipe disassembly auxiliary tool, Features: Including sleeve and handle; The front end of the sleeve has a chamfered corner portion (61) on the outside, the front end of the sleeve has a rounded corner portion (62) on the inside, the outer wall of the sleeve is a cylindrical surface, the inner wall of the sleeve is a stepped shape with a thin front portion and a thick rear portion, the sleeve is formed by butting two semicircular ring arc plates (6), the upper portions of the two semicircular ring arc plates (6) are connected via a sleeve connecting assembly, the lower portions of the two semicircular ring arc plates (6) are provided with teeth and tooth grooves that mesh with each other, and the side walls of the two semicircular ring arc plates (6) are provided with hinge holes; The handle (1) is a semicircular arc rod-shaped structure, which is formed by two half arc rods (4) connected together, the upper parts of the two half arc rods (4) are hinged through a sleeve pin (2), the lower parts of the two half arc rods (4) are hinged to the outer ends of the connecting rods (7), and the inner ends of the connecting rods (7) are hinged to the middle of the hinge hole; When the handle is lifted, the two semicircular arc plates (6) open, and when the handle is lowered, the two semicircular arc plates (6) close; When the two semicircular arc plates (6) are butt-jointed to form a sleeve, the hinge hole is located at the lower part of the horizontal axis section of the sleeve.

2. The grooved steel pipe disassembly auxiliary tool according to claim 1, Features: The lower parts of the two half arc rods are two ear structures, and the connecting rod (7) is arranged between the two ear structures.

3. The grooved steel pipe disassembly auxiliary tool according to claim 1, Features: A groove is provided in the middle of the upper ends of the two semicircular arc plates (6); the connection assembly comprises a connection block (3) and a sleeve pin (5); one end of the connection block (3) is placed in the groove of one semicircular arc plate (6), and the other end of the connection block (3) is placed in the groove of the other semicircular arc plate (6).

4. The grooved steel pipe disassembly auxiliary tool according to claim 1, Features: The hinge holes are oblong holes arranged radially along the two semicircular arc plates (6).

5. The grooved steel pipe disassembly auxiliary tool according to claim 4, Features: The length of the oblong hole is no greater than twice the length of the connecting rod (7).

6. The grooved steel pipe disassembly auxiliary tool according to claim 1, Features: The rear ends of the two semicircular arc plates (6) are each provided with a half-circle flange, the upper part of the half-circle flange (64) of the semicircular arc plate (6) is provided with an upper flat portion (65), and the lower part of the half-circle flange (64) of the semicircular arc plate (6) is provided with a lower flat portion (63); when the two semicircular arc plates (6) are closed and butt-jointed to form a sleeve, the lower flat portions (63) at the lower parts of the two semicircular arc plates (6) form a supporting portion; when the two semicircular arc plates (6) are butt-jointed to form a sleeve, the half-circle flanges at the rear ends of the two semicircular arc plates (6) are butt-jointed to form a full-circle flange.

7. The grooved steel pipe disassembly auxiliary tool according to claim 6, Features: When disassembling, the front end of the sleeve contacts the outer circle of the groove head of the grooved steel pipe (11), the middle of the sleeve is suspended in the air, and the inner circle of the flange at the rear end of the sleeve contacts the outer circle of the grooved steel pipe (11).

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