Insert type continuous pipe joint device

Abstract

The utility model discloses an insert type continuous pipe joint device which comprises a joint inner core and a metal outer sleeve, the joint inner core comprises a tubular first inner core pipe body, an inner core transition pipe body and a second inner core pipe body, an inner core outer ring groove is formed in the outer wall of the second inner core pipe body, an insert is arranged in the inner core outer ring groove, and the metal outer sleeve is sleeved with the insert. The insert comprises a pair of C-shaped sub-pieces, the metal outer sleeve comprises a tubular outer sleeve body, and a clamping jaw is arranged at the tail end of the outer sleeve body. By adding the insert, the length of the clamping jaw of the metal jacket is reduced, and the wall thickness of the blank of the metal jacket is reduced, so that the weight of the blank is reduced, and the cost is reduced. As the length of the clamping jaw of the metal jacket is reduced, the cutting allowance of other parts is reduced, and the material utilization rate is effectively improved.

Description

Technical Field

[0001] The utility model relates to a pipe joint, more specifically, to an insert type continuous pipe joint device. Background Art

[0002] like Figure 6 , the continuous pipe joint is generally made by using a pipe locking machine to compress the diameter of the metal jacket 3S, the inner teeth 301S are embedded in the outer layer 101S of the continuous pipe, the outer teeth 201S of the joint inner core are embedded in the inner layer 103S of the continuous pipe, and the claws 302S are pressed into the grooves of the joint inner core 202S, so that the metal jacket 3S, the continuous pipe 1S, and the joint inner core 2S are connected as a whole and carry the load together. As the pressure of the continuous pipe increases, the number of layers of the continuous pipe reinforcement layer 102S increases, and the wall thickness increases. In order to make the metal jacket claws 302S pressed into the grooves of the joint inner core 202S to reliably carry the load, the length of the metal jacket claws 302S must be lengthened accordingly. At this time, when selecting seamless steel pipe as the metal jacket blank, the machining allowance at the claw is considered, the wall thickness of the steel pipe is increased, and the machining cutting amount of other parts is large, which increases the cost; if forgings are selected as metal jacket blanks, long claws can be forged to reduce the machining allowance of other parts, but the forging mold must be made first, which increases the mold investment, the process and turnover time, and the forging cost is not low. Utility Model Content

[0003] Based on this, it is necessary to provide an insert-type continuous pipe joint device to address the above technical problems.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] An insert-type continuous pipe joint device, characterized in that the insert-type continuous pipe joint device comprises a joint inner core and a metal outer shell, wherein the metal outer shell is arranged outside the joint inner core.

[0006] The joint inner core comprises a tubular first inner core tube body, an inner core transition tube body and a second inner core tube body, an annular inner core outer ring groove is provided on the outer wall of the second inner core tube body, an insert is provided in the inner core outer ring groove, the insert comprises a pair of "C"-shaped sub-components, the sub-component comprises a "C"-shaped sub-component main body, an arc-shaped inner ring protrusion is provided on the inner wall of the sub-component main body, an arc-shaped first outer ring protrusion is provided on one side of the outer wall of the sub-component main body, an arc-shaped second outer ring protrusion is provided on the other side of the outer wall of the sub-component main body, an arc-shaped claw ring groove is provided in the middle of the outer wall of the sub-component main body, and an arc-shaped fixing ring groove is provided at the bottom of the claw ring groove.

[0007] The metal jacket comprises a tubular jacket body, and an annular claw is provided at the end of the jacket body, and the extension direction of the claw is perpendicular to the extension direction of the jacket body.

[0008] Among them, the claw ring groove matches with the claw, and the inner ring protrusion matches with the outer ring groove of the inner core.

[0009] As a preferred embodiment of the utility model, a threaded section is provided at the end of the outer wall of the second inner core tube body.

[0010] As a preferred embodiment of the present utility model, the inner diameter of the second inner core tube body is greater than that of the first inner core tube body.

[0011] As a preferred embodiment of the present invention, the outer diameter of the second outer ring protrusion is greater than that of the first outer ring protrusion.

[0012] As a preferred embodiment of the utility model, a rubber fixing ring is provided in the fixing ring groove.

[0013] As a preferred embodiment of the utility model, a plurality of first inner core ring teeth are provided on the outer wall of the first inner core tube body, and a plurality of outer sleeve ring teeth are provided on the inner wall of the outer sleeve body.

[0014] As a preferred embodiment of the utility model, the cross-sections of the first inner core ring teeth and the outer ring teeth are triangular.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The utility model provides an insert-type continuous pipe joint device, which reduces the length of the metal jacket claws and the wall thickness of the metal jacket blank by adding inserts, thereby reducing the weight of the blank and reducing the cost. Since the length of the metal jacket claws is reduced, the cutting allowance of other parts is reduced, and the material utilization rate is effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the scheme in the utility model, a brief introduction is given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a structural schematic diagram of the insert type continuous pipe joint device of the utility model;

[0019] Figure 2 for Figure 1 A detailed enlarged schematic diagram of area A in FIG.

[0020] Figure 3 for Figure 1 A schematic diagram of the structure of the insert of the joint device;

[0021] Figure 4 for Figure 3 A schematic diagram of the structure of the components of the insert;

[0022] Figure 5 for Figure 4 A detailed enlarged schematic diagram of the B area;

[0023] Figure 6 It is a structural schematic diagram of an existing continuous pipe joint device;

[0024] The markings in the figure are as follows: 1. continuous pipe; 2. joint inner core; 21. first inner core tube body; 211. inner core ring teeth; 22. inner core transition tube body; 23. second inner core tube body; 231. inner core outer ring groove; 232. threaded section; 3. metal jacket; 31. outer jacket tube body; 311. outer jacket ring teeth; 32. claws; 4. insert; 40. sub-component; 41. sub-component body; 42. inner ring protrusion; 43. first outer ring protrusion; 44. second outer ring protrusion; 45. claw ring groove; 451. fixed ring groove; 5. rubber fixing ring. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0026] like Figure 1 and Figure 2 As shown, the insert-type continuous pipe joint device comprises a joint inner core 2 and a metal outer shell 3 , and the metal outer shell 3 is arranged outside the joint inner core 2 .

[0027] The joint inner core 2 comprises a tubular first inner core body 21, an inner core transition body 22 and a second inner core body 23. The outer wall of the first inner core body 21 is provided with a plurality of first inner core ring teeth 211, and the outer wall of the second inner core body 23 is provided with an annular inner core outer ring groove 231. The outer wall end of the second inner core body 23 is provided with a threaded section 232.

[0028] It should be noted that the inner diameter of the second inner core tube body 23 is greater than that of the first inner core tube body 21 .

[0029] like Figures 3 to 5As shown, an insert 4 is provided in the inner core outer ring groove 231, and the insert 4 includes a pair of "C"-shaped sub-components 40, and the sub-component 40 includes a "C"-shaped sub-component body 41, and an arc-shaped inner ring protrusion 42 is provided on the inner wall of the sub-component body 41, and an arc-shaped first outer ring protrusion 43 is provided on one side of the outer wall of the sub-component body 41, and an arc-shaped second outer ring protrusion 44 is provided on the other side of the outer wall of the sub-component body 41, and the outer diameter of the second outer ring protrusion 44 is larger than that of the first outer ring protrusion 43.

[0030] The outer wall of the sub-body 41 is provided with an arc-shaped claw ring groove 45 in the middle, and the bottom of the claw ring groove 45 is provided with an arc-shaped fixing ring groove 451. A rubber fixing ring 5 is provided in the fixing ring groove 451. The material of the rubber fixing ring 5 is usually nitrile, and can also be other elastic rubber materials.

[0031] It should be noted that the segment 40 can be obtained by longitudinally sectioning the insert 4 .

[0032] The metal sleeve 3 includes a tubular sleeve body 31 , a ring-shaped claw 32 is disposed at the end of the sleeve body 31 , and the extension direction of the claw 32 is perpendicular to the extension direction of the sleeve body 31 . A plurality of sleeve ring teeth 311 are disposed on the inner wall of the sleeve body 31 .

[0033] It should be noted that the claw annular groove 45 cooperates with the claw 32 , and the inner annular protrusion 42 cooperates with the inner core outer annular groove 231 .

[0034] In addition, the cross-sections of the first inner core ring gear 211 and the outer core ring gear 311 are triangular.

[0035] The working method of the insert type continuous pipe joint device is described below. The steps are as follows:

[0036] Step S1, chamfering the inner surface of the coiled tube 1 to make it consistent with the taper of the joint inner core 2, and the outer surface chamfering 5×45°;

[0037] Step S2, putting the metal jacket 3 on the outer surface of the coiled tube 1;

[0038] Step S3, inserting the rubber fixing ring 5 into the outer surface of the joint inner core 2;

[0039] Step S4, install the insert 4 on the right part of the joint inner core 2 and fix it with one hand;

[0040] Step S5, move the rubber fixing ring 5, expand the inner ring, and insert it into the fixing ring groove 451 of the insert 4 to tighten it;

[0041] Step S6: When the joint needs to be expanded internally, insert the internal expansion device from the left end of the joint inner core assembly;

[0042] Step S7, when the joint inner expansion is not required, the joint inner core assembly is directly inserted into the inner hole of the coiled tube 1; when the joint inner expansion is required, the joint inner core assembly containing the inner expansion device is inserted into the inner hole of the coiled tube 1;

[0043] Step S8, moving the metal sleeve 3 so that the longitudinal position of the claw 32 is consistent with the longitudinal center position of the claw ring groove 45 of the insert 4;

[0044] Step S9, when the joint internal expansion is required, start the internal expansion device to perform the joint internal expansion; when the joint internal expansion is not required, skip this step and proceed to the next step;

[0045] Step S10, setting the crimping amount of the tube crimping machine, and crimping in sections;

[0046] Step S11, check the diameter of each section after crimping, if there is a diameter rebound, reset the crimping parameters of the tube crimping machine;

[0047] Step S12: After passing the inspection, the continuous pipe joint is removed from the pipe locking device, and the joint installation is completed.

[0048] The insert type continuous pipe joint device has the following advantages:

[0049] 1. By adding inserts, the length of the metal jacket claws is reduced, and the wall thickness of the metal jacket blank is reduced, thereby reducing the weight of the blank and reducing the cost;

[0050] 2. As the length of the metal jacket claws is reduced, the cutting allowance of other parts is reduced, effectively improving the material utilization rate;

[0051] 3. Cut the insert into two halves and align them to achieve quick connection between the insert and the inner core of the joint;

[0052] 4. The rubber ring is used to fix the insert, which is a simple method. When the joint is locked, the compressibility of the rubber ring increases the stability between the components.

[0053] Without limitation to this, any changes or substitutions that are not conceived through creative work should be included in the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be based on the protection scope defined in the claims.

Claims

1. An insert type continuous pipe joint device, characterized in that: The insert-type continuous pipe joint device comprises a joint inner core (2) and a metal outer shell (3), wherein the metal outer shell (3) is arranged outside the joint inner core (2). The joint inner core (2) comprises a tubular first inner core body (21), an inner core transition body (22) and a second inner core body (23); an outer wall of the second inner core body (23) is provided with an annular inner core outer ring groove (231); an insert (4) is provided in the inner core outer ring groove (231); the insert (4) comprises a pair of "C"-shaped sub-pieces (40); the sub-piece (40) comprises a "C"-shaped sub-piece main body (41 ), an arc-shaped inner ring protrusion (42) is provided on the inner wall of the sub-element body (41), an arc-shaped first outer ring protrusion (43) is provided on one side of the outer wall of the sub-element body (41), and an arc-shaped second outer ring protrusion (44) is provided on the other side of the outer wall of the sub-element body (41), an arc-shaped claw ring groove (45) is provided in the middle of the outer wall of the sub-element body (41), and an arc-shaped fixing ring groove (451) is provided at the bottom of the claw ring groove (45), The metal jacket (3) comprises a tubular jacket body (31), and an annular claw (32) is provided at the end of the jacket body (31). The extending direction of the claw (32) is perpendicular to the extending direction of the jacket body (31). The claw annular groove (45) matches with the claw (32), and the inner annular protrusion (42) matches with the inner core outer annular groove (231).

2. The insert type continuous pipe joint device according to claim 1, characterized in that: A threaded section (232) is provided at the end of the outer wall of the second inner core tube body (23).

3. The insert type continuous pipe joint device according to claim 1, characterized in that: The inner diameter of the second inner core tube body (23) is greater than that of the first inner core tube body (21).

4. The insert type continuous pipe joint device according to claim 1, characterized in that: The outer diameter of the second outer ring protrusion (44) is greater than that of the first outer ring protrusion (43).

5. The insert type continuous pipe joint device according to claim 1, characterized in that: A rubber fixing ring (5) is provided in the fixing ring groove (451).

6. The insert type continuous pipe joint device according to claim 1, characterized in that: A plurality of first inner core ring teeth (211) are provided on the outer wall of the first inner core tube body (21), and a plurality of outer core ring teeth (311) are provided on the inner wall of the outer core tube body (31).

7. The insert type continuous pipe joint device according to claim 6, characterized in that: The cross sections of the first inner core ring teeth (211) and the outer core ring teeth (311) are triangular.

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