Assembly tool for installing B-type sleeve

Abstract

The invention relates to the technical field of pipeline assembly, and provides an assembly tool for mounting a B-type sleeve, two fixing rings are arranged on a pipeline main body in a sleeving manner at intervals in the first direction and can keep relatively fixed with the pipeline main body, and the fixing rings are used for limiting the B-type sleeve to move relative to the pipeline main body in the first direction; the multiple adjusting assemblies are installed on the fixing ring and distributed around the axis of the pipeline body at intervals, at least one adjusting assembly and other adjusting assemblies are arranged on the two opposite sides of a first straight line in the axial projection of the pipeline body, the first straight line passes through the center of the pipeline body, and the second straight line passes through the center of the pipeline body. An adjusting piece of the adjusting assembly can move relative to the fixing ring in the radial direction of the pipeline body, and the B-type sleeve can be clamped between the adjusting piece and the pipeline body; the first direction is parallel to the axial direction of the pipe body. The assembling tool locks the relative position of the B-type sleeve and the pipeline body, and the problems of dislocation, loosening and the like are not prone to occurring in the subsequent machining process.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline assembly, and in particular to an assembly tool for installing a B-type sleeve. Background Art

[0002] In the existing B-type sleeve installation tasks used for emergency repairs and hot work operations, there are no dedicated assembly tools that can ensure safe installation. In the actual operation process, the operator uses a chain to constrain the B-type sleeve to the pipeline body to complete the positioning and tightening, and then performs welding and other operations.

[0003] Generally, the B-type sleeve is divided into multiple pieces in its circumferential direction, and is wrapped around the surface of the pipe body by connecting them end to end in sequence, thus eliminating the problem of sleeve installation along the first direction from the end of the pipe body and improving assembly efficiency. At the same time, it will also cause that the part of the B-type sleeve located at the bottom can be firmly locked by the chain and the pipe body under the action of the gravity of the pipe body, and will not be displaced, while the part of the B-type sleeve located at the top is prone to displacement and rubbing relative to the pipe body due to the lack of sufficient force. In addition, since most of the pipelines on site have a certain inclination angle, and the area where the B-type sleeve is pre-installed has been polished, resulting in a further reduction in the friction coefficient, the part of the B-type sleeve at the top is very easy to slide along the surface of the pipe body, which not only affects the progress and quality of the work, but also poses a relatively high safety risk.

[0004] Therefore, there is an urgent need for an assembly tool for installing a B-type sleeve to solve the above technical problems. Summary of the invention

[0005] The purpose of the present invention is to provide an assembly tool for installing a B-type sleeve, which can lock the relative position of the B-type sleeve and the pipeline body, and is not prone to problems such as dislocation and loosening during subsequent processing.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] Kit for installing B-type sockets, including:

[0008] A fixing ring, wherein two fixing rings are provided, and the two fixing rings are sleeved on the pipe body at intervals in the first direction and can be relatively fixed with the pipe body, and the fixing rings are used to limit the movement of the B-type sleeve relative to the pipe body along the first direction;

[0009] An adjusting assembly is mounted on the fixing ring. The adjusting assembly is provided with a plurality of groups. The plurality of adjusting assemblies are spaced apart around the axis of the pipe body. In the axial projection of the pipe body, at least one group of the adjusting assemblies is disposed on opposite sides of a first straight line with the other adjusting assemblies. The first straight line passes through the center of the pipe body. The adjusting assembly includes an adjusting member. The adjusting member can move relative to the fixing ring along the radial direction of the pipe body. The B-type sleeve can be clamped between the adjusting member and the pipe body.

[0010] The first direction is parallel to the axial direction of the pipe body.

[0011] As a preferred technical solution of the above-mentioned assembly tool for installing the B-type sleeve, multiple groups of the above-mentioned adjustment components are evenly distributed around the axis of the above-mentioned pipe body.

[0012] As a preferred technical solution of the above-mentioned assembly tool for installing the B-type sleeve, the above-mentioned fixing ring includes a plurality of connecting parts, and the plurality of the above-mentioned connecting parts are arranged and fixed in sequence around the axis of the above-mentioned pipe body.

[0013] As a preferred technical solution of the above-mentioned assembly tool for installing the B-type sleeve, the two adjacent connecting parts are fixed by threaded fasteners.

[0014] As a preferred technical solution for the assembly tool for installing the B-type sleeve, the head and tail ends of the connecting piece are respectively provided with connecting ears for installing the threaded fastener.

[0015] As a preferred technical solution of the above-mentioned assembly tool for installing the B-type sleeve, the above-mentioned adjustment component includes a mounting frame, the above-mentioned adjustment member is threadedly connected to the above-mentioned mounting frame, and the above-mentioned mounting frame is fixed to the above-mentioned fixing ring.

[0016] As an optimal technical solution for the above-mentioned assembly tool for installing the B-type sleeve, the above-mentioned mounting frame includes a fixed seat and a movable part, the above-mentioned fixed seat is fixed to the above-mentioned fixed ring, the above-mentioned movable part is equipped with the above-mentioned adjusting part, the above-mentioned movable part is hinged to the above-mentioned fixed seat to switch the above-mentioned movable part between the first position and the second position relative to the fixed seat, when in the above-mentioned first position, the above-mentioned adjusting part is located in the groove formed between the two above-mentioned fixed rings, and when in the above-mentioned second position, the above-mentioned adjusting part is located outside the above-mentioned groove.

[0017] As a preferred technical solution of the above-mentioned assembly tool for installing the B-type sleeve, the above-mentioned adjustment component also includes a positioning pin, and one of the above-mentioned fixed seat and the above-mentioned movable part is provided with a first positioning hole and a second positioning hole, and the other is provided with a third positioning hole. When the above-mentioned first positioning hole coincides with the above-mentioned third positioning hole, the above-mentioned movable part is in the above-mentioned first position, and when the above-mentioned second positioning hole coincides with the above-mentioned third positioning hole, the above-mentioned movable part is in the above-mentioned second position. The above-mentioned positioning pin can selectively connect the above-mentioned third positioning hole and the above-mentioned first positioning hole, or connect the above-mentioned third positioning hole and the above-mentioned second positioning hole.

[0018] As a preferred technical solution of the above-mentioned assembly tool for installing the B-type sleeve, it also includes a gasket, which is installed on the inner circumferential wall of the above-mentioned fixing ring and is clamped between the above-mentioned fixing ring and the above-mentioned pipe body.

[0019] As a preferred technical solution for the assembly tool for installing the B-type sleeve, the fixing ring is made of titanium alloy.

[0020] Beneficial effects of the present invention:

[0021] The present invention provides a pairing tool for installing a B-type sleeve, comprising a fixing ring and an adjusting component. Among them, two fixing rings are provided, the two fixing rings are sleeved on the pipeline body at intervals in the first direction and can be relatively fixed with the pipeline body, and the fixing rings are used to limit the movement of the B-type sleeve relative to the pipeline body along the first direction; the adjusting component is installed on the fixing ring and multiple groups are provided, the multiple groups of adjusting components are distributed at intervals around the axis of the pipeline body, and in the axial projection of the pipeline body, at least one group of adjusting components and other adjusting components are arranged on opposite sides of a first straight line, the first straight line passes through the center of the pipeline body, the adjusting component includes an adjusting member, the adjusting member can move relative to the fixing ring along the radial direction of the pipeline body, and the B-type sleeve can be clamped between the adjusting member and the pipeline body; the first direction is parallel to the axial direction of the pipeline body.

[0022] Specifically, after obtaining the area of ​​the pipe main body where the B-type sleeve needs to be set, fixing rings are respectively set at the axial ends of the area, the fixing rings are sleeved on the pipe main body and fixed to the pipe main body, and the side walls of the two fixing rings adjacent to each other in the first direction form a groove with the outer wall of the pipe main body, and the B-type sleeve is placed in the groove. The two fixing rings can limit the movement of the B-type sleeve relative to the pipe main body along the first direction, and preliminarily constrain the B-type sleeve to a preset area. The adjusting component is supported by the fixing ring, and multiple adjusting components are distributed around the axis of the pipe main body. The adjusting member moves along the radial direction of the pipe main body to abut the B-type sleeve against the pipe main body along the radial direction of the pipe main body, thereby completing the re-constraint of the B-type sleeve for subsequent welding of the B-type sleeve.

[0023] In this way, the relative movement of the B-type sleeve and the pipeline body in the first direction can be limited by setting the two fixing rings at intervals in the first direction. The adjustment of the adjusting member along the radial direction of the pipeline body can make the B-type sleeve abut against the surface of the pipeline body to prevent the B-type sleeve from separating from the pipeline body, thereby locking the relative position of the B-type sleeve and the pipeline body. In the subsequent processing, problems such as dislocation and loosening are not likely to occur, reducing construction safety risks and improving safety production efficiency. In addition, the tool set can also adjust the size of the weld of the B-type sleeve by adjusting the moving distance of the adjusting member, and debug according to the operation requirements to improve the operation quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0025] Figure 1 It is a schematic diagram of the assembly of a fixing ring, a pipe body and a B-type sleeve provided in an embodiment of the present invention;

[0026] Figure 2 is a cross-sectional view of a fixing ring and a pipe body in an assembled state provided by an embodiment of the present invention;

[0027] Figure 3 It is a schematic structural diagram of the movable part and the B-type sleeve when the movable part provided by an embodiment of the present invention is in the first position.

[0028] In the figure:

[0029] X, first direction;

[0030] 100. Pipeline body;

[0031] 200, B-type sleeve;

[0032] 300, fixing ring; 310, first connecting member; 311, connecting ear; 320, second connecting member;

[0033] 400, adjustment assembly; 410, adjustment member; 420, mounting frame; 421, fixing seat; 4211, first positioning hole; 4212, second positioning hole; 422, movable member;

[0034] 500. Pad. DETAILED DESCRIPTION

[0035] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0036] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0038] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying 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 limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0039] like Figures 1 to 3As shown, the present invention provides a pairing tool for installing a B-type sleeve, comprising a fixing ring 300 and an adjusting assembly 400. There are two fixing rings 300, which are sleeved on the pipe body 100 at intervals in the first direction X and can be relatively fixed with the pipe body 100, and the fixing rings 300 are used to limit the B-type sleeve 200 from moving relative to the pipe body 100 along the first direction X; the adjusting assembly 400 is installed on the fixing ring 300 and is provided with multiple groups, and the multiple groups of adjusting assemblies 400 are distributed at intervals around the axis of the pipe body 100, and in the axial projection of the pipe body 100, at least one group of adjusting assemblies 400 and the other adjusting assemblies 400 are disposed on opposite sides of a first straight line, and the first straight line passes through the center of the pipe body 100, and the adjusting assembly 400 includes an adjusting member 410, and the adjusting member 410 can move relative to the fixing ring 300 along the radial direction of the pipe body 100, and the B-type sleeve 200 can be clamped between the adjusting member 410 and the pipe body 100; the first direction X is parallel to the axial direction of the pipe body 100.

[0040] Specifically, after obtaining the area of ​​the pipe body 100 where the B-type sleeve 200 needs to be set, a fixing ring 300 is respectively set at the axial ends of the area, the fixing ring 300 is sleeved on the pipe body 100 and fixed to the pipe body 100, and the side walls of the two fixing rings 300 adjacent to each other in the first direction X form a groove with the outer side wall of the pipe body 100, and the B-type sleeve 200 is placed in the groove. The two fixing rings 300 can limit the movement of the B-type sleeve 200 relative to the pipe body 100 along the first direction X, and preliminarily constrain the B-type sleeve 200 to a preset area. The adjustment component 400 is supported by the fixing ring 300, and multiple adjustment components 400 are distributed around the axis of the pipe body 100. The adjustment member 410 moves along the radial direction of the pipe body 100 to make the B-type sleeve 200 abut against the pipe body 100 along the radial direction of the pipe body 100, thereby completing the re-constraint of the B-type sleeve 200, so as to facilitate the subsequent welding work of the B-type sleeve 200.

[0041] In this way, the relative movement of the B-type sleeve 200 and the pipeline body 100 in the first direction X can be limited by setting the two fixing rings 300 at intervals in the first direction X. The adjustment of the adjusting member 410 along the radial direction of the pipeline body 100 can make the B-type sleeve 200 abut against the surface of the pipeline body 100, prevent the B-type sleeve 200 from separating from the pipeline body 100, and then lock the relative position of the B-type sleeve 200 and the pipeline body 100. In the subsequent processing process, it is not easy to cause problems such as dislocation and loosening, reduce the construction safety risk, and improve the safety production efficiency. In addition, the tool set can also adjust the moving distance of the adjusting member 410 to adjust the size of the weld of the B-type sleeve 200, debug according to the operation requirements, and improve the operation quality.

[0042] Exemplarily, the adjustment assembly 400 is provided in 6 groups or 8 groups.

[0043] It should be noted that, generally, the B-type sleeve 200 is divided into multiple pieces in its circumferential direction, and is wrapped around the surface of the pipe body 100 by connecting them end to end in sequence, thereby eliminating the problem of sleeve installation along the first direction X from the end of the pipe body 100, thereby improving assembly efficiency. Therefore, during the entire assembly process, the prior assembly of the fixing ring 300 and the pipe body 100 does not affect the assembly of the B-type sleeve 200 and the pipe body 100, and it can also be understood that the fixing ring 300 does not hinder the B-type sleeve 200 from being installed in the designated area of ​​the pipe body 100.

[0044] Optionally, multiple groups of adjustment components 400 are evenly distributed around the axis of the pipe body 100. In this way, the even distribution of multiple groups of adjustment components 400 can make the force on the B-type sleeve 200 more even, avoid stress concentration, and make adjustment easier.

[0045] Exemplarily, six groups of adjustment assemblies 400 are provided, and in the circumferential direction of the pipe body 100 , two adjacent adjustment assemblies 400 are sandwiched at 60°.

[0046] Optionally, the fixing ring 300 includes a plurality of connecting pieces, and the plurality of connecting pieces are sequentially arranged and fixed around the axis of the pipe body 100 .

[0047] Illustratively, in the axial projection of the pipe body 100, the outer circumferential wall of the pipe body 100 is circular, the inner circumferential wall of the fixing ring 300 is circular, the inner wall of each connecting piece is arc-shaped, and a plurality of connecting pieces can be connected in sequence around the axis of the pipe body 100 to form a fixing ring 300. This facilitates the assembly of the fixing ring 300 with the pipe body 100, and the fixing ring 300 no longer needs to be assembled with the pipe body 100 by being sleeved along the axial direction of the pipe body 100.

[0048] Exemplarily, two connectors are provided, which are respectively denoted as a first connector 310 and a second connector 320. The first connector 310 and the second connector 320 are disposed on opposite sides of the radial direction of the pipe body 100. After being concentrated on the pipe body 100, the first connector 310 and the second connector 320 can clamp the pipe body 100. In the circumferential direction of the pipe body 100, the head end of the first connector 310 is fixed to the tail end of the second connector 320, and the head end of the second connector 320 is fixed to the tail end of the first connector 310.

[0049] Optionally, two adjacent connecting pieces are fixed by threaded fasteners. With such arrangement, the connecting piece has a simple connecting structure and is easy to operate.

[0050] Optionally, connecting ears 311 are respectively provided at both ends of the connecting piece for installing threaded fasteners.

[0051] In one solution, the connecting ear 311 extends along the circumference of the pipe body 100, and in the thickness direction of the connecting piece, the connecting ear 311 at the head end of the connecting piece is close to the outer wall of the connecting piece, and the connecting ear 311 at the tail end of the connecting piece is close to the inner wall of the connecting piece, that is, the connecting pieces at the head and tail ends of the connecting piece are staggered in the thickness direction of the connecting piece. In this way, in the circumference of the pipe body 100, of two adjacent connecting pieces, the connecting ear 311 at the tail end of one connecting piece can be inserted between the connecting ear 311 at the head end of the other connecting piece and the pipe body 100, and the threaded fastener can be inserted into the two connecting ears 311 to complete the connection of the two connecting pieces.

[0052] Another solution is that the connecting ear 311 extends radially along the pipe body 100 toward a side away from the pipe body 100, and in two circumferentially adjacent connecting pieces of the pipe body 100, the connecting ear 311 at the head end of one connecting piece can be aligned with the connecting ear 311 at the tail end of the other connecting piece, and a threaded fastener can connect the two connecting ears 311 to complete the connection of the two connecting pieces.

[0053] Optionally, the adjustment assembly 400 includes a mounting frame 420, the adjustment member 410 is threadedly connected to the mounting frame 420, and the mounting frame 420 is fixed to the fixing ring 300. In this way, the mounting frame 420 can be used to straighten and support the adjustment member 410, and provide the adjustment member 410 with a certain adjustment space.

[0054] Exemplarily, the adjusting member 410 is a threaded member, and the mounting frame 420 has a threaded hole at a distance h from the fixing ring 300 along the radial direction of the fixing ring 300, and the adjusting member 410 is threadedly connected to the mounting frame 420 at the threaded hole. In this way, the adjusting assembly 400 can be used to fix the B-type sleeve 200 with a maximum thickness of h.

[0055] Optionally, the mounting frame 420 includes a fixed seat 421 and a movable member 422, the fixed seat 421 is fixed to the fixed ring 300, the movable member 422 is installed with an adjusting member 410, the movable member 422 is hinged to the fixed seat 421 to switch the movable member 422 to a first position and a second position relative to the fixed seat 421, when in the first position, the adjusting member 410 is located in a groove formed between the two fixed rings 300, and when in the second position, the adjusting member 410 is located outside the groove.

[0056] In this way, by switching the movable part 422 between its first position and the second position, the movable part 422 can carry the adjusting part 410 to change the relative position of the adjusting part 410 and the fixing ring 300. When the B-type sleeve 200 and the pipe body 100 are not assembled, the movable part 422 is located in the second position, so that the adjusting part 410 is located outside the groove formed by the two fixing rings 300, avoiding interference with the assembly of the B-type sleeve 200. After the B-type sleeve 200 is placed between the two fixing rings 300, the movable part 422 switches to its first position, so that the adjusting part 410 can face the B-type sleeve 200, and the B-type sleeve 200 is abutted against the outer wall of the pipe body 100 through the adjusting part 410.

[0057] In other embodiments, the movable member 422 and the fixed seat 421 can slide relative to each other along the first direction X. When the movable member 422 is in its first position, the adjusting member 410 installed on the movable member 422 is located in the groove between the two fixed rings 300; when the movable member 422 is in the second position, the adjusting member 410 installed on the movable member 422 is located in the fixed seat 421.

[0058] Optionally, the adjustment component 400 also includes a positioning pin, and one of the fixed seat 421 and the movable member 422 is provided with a first positioning hole 4211 and a second positioning hole 4212, and the other is provided with a third positioning hole. When the first positioning hole 4211 coincides with the third positioning hole, the movable member 422 is in a first position, and when the second positioning hole 4212 coincides with the third positioning hole, the movable member 422 is in a second position. The positioning pin can selectively connect the third positioning hole and the first positioning hole 4211, or connect the third positioning hole and the second positioning hole 4212.

[0059] Exemplarily, the movable member 422 can be flipped relative to the fixed seat 421. When the movable member 422 is in the first position, the first positioning hole 4211 and the third positioning hole overlap. At this time, the positioning pin is inserted into the first positioning hole 4211 and the third positioning hole to limit the movement of the movable member 422 relative to the fixed seat 421, so as to maintain it in the first position, thereby maintaining the stability of the support of the adjustment member 410 to the B-type sleeve 200. When the movable member 422 is in the second position, the second positioning hole 4212 and the third positioning hole overlap. At this time, the positioning pin is inserted into the second positioning hole 4212 and the third positioning hole to limit the movement of the movable member 422 relative to the fixed seat 421, so as to maintain it in the second position.

[0060] Optionally, the assembly tool for installing the B-type sleeve further includes a gasket 500 , which is installed on the inner circumferential wall of the fixing ring 300 , and the gasket 500 is clamped between the fixing ring 300 and the pipe body 100 .

[0061] With such a configuration, the spacer 500 can fill the gap between the fixing ring 300 and the pipe body 100 , thereby enhancing the friction between the two, thereby achieving an anti-slip effect and maintaining the relative fixation of the fixing ring 300 and the pipe body 100 .

[0062] Exemplarily, the cushion block 500 may be a rubber member.

[0063] Optionally, the fixing ring 300 is made of titanium alloy. For example, titanium alloy has the characteristics of high strength and low density, and can reduce its own weight while maintaining its structural reliability, thereby reducing the overall weight of the assembly tool.

[0064] In addition, the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A tool for installing a B-type sleeve, characterized in that: include: A fixing ring (300), wherein two fixing rings (300) are provided, and the two fixing rings (300) are sleeved on the pipeline body (100) at intervals in a first direction (X) and can be relatively fixed to the pipeline body (100), and the fixing ring (300) is used to limit the movement of the B-type sleeve (200) relative to the pipeline body (100) along the first direction (X); An adjusting assembly (400) is mounted on the fixing ring (300), wherein the adjusting assembly (400) is provided in a plurality of groups, and the plurality of groups of the adjusting assembly (400) are spaced apart around the axis of the pipeline body (100), and in the axial projection of the pipeline body (100), at least one group of the adjusting assembly (400) and the other adjusting assembly (400) are arranged on opposite sides of a first straight line, wherein the first straight line passes through the center of the pipeline body (100), and the adjusting assembly (400) comprises an adjusting member (410), wherein the adjusting member (410) can move relative to the fixing ring (300) along the radial direction of the pipeline body (100), and the B-type sleeve (200) can be clamped between the adjusting member (410) and the pipeline body (100); The first direction (X) is parallel to the axial direction of the pipe body (100).

2. The assembly tool for installing a B-type sleeve according to claim 1, characterized in that: A plurality of groups of the adjustment components (400) are evenly distributed around the axis of the pipeline body (100).

3. The assembly tool for installing a B-type sleeve according to claim 1, characterized in that: The fixing ring (300) comprises a plurality of connecting pieces, and the plurality of connecting pieces are sequentially arranged and fixed around the axis of the pipe body (100).

4. The assembly tool for installing a B-type sleeve according to claim 3, characterized in that: Two adjacent connecting members are fixed by threaded fasteners.

5. The assembly tool for installing a B-type sleeve according to claim 4, characterized in that: The connecting piece is provided with connecting ears (311) at both ends thereof for installing the threaded fastener.

6. The assembly tool for installing a B-type sleeve according to claim 1, characterized in that: The adjustment assembly (400) comprises a mounting frame (420), the adjustment member (410) is threadedly connected to the mounting frame (420), and the mounting frame (420) is fixed to the fixing ring (300).

7. The assembly tool for installing a B-type sleeve according to claim 6, characterized in that: The mounting frame (420) comprises a fixed seat (421) and a movable member (422); the fixed seat (421) is fixed to the fixed ring (300); the movable member (422) is mounted with the adjusting member (410); the movable member (422) is hinged to the fixed seat (421) to switch between a first position and a second position of the movable member (422) relative to the fixed seat (421); when in the first position, the adjusting member (410) is located in a groove formed between the two fixed rings (300); and when in the second position, the adjusting member (410) is located outside the groove.

8. The assembly tool for installing a B-type sleeve according to claim 7, characterized in that: The adjustment assembly (400) further includes a positioning pin, wherein one of the fixing seat (421) and the movable member (422) is provided with a first positioning hole (4211) and a second positioning hole (4212), and the other is provided with a third positioning hole. When the first positioning hole (4211) coincides with the third positioning hole, the movable member (422) is in the first position, and when the second positioning hole (4212) coincides with the third positioning hole, the movable member (422) is in the second position. The positioning pin can selectively connect the third positioning hole and the first positioning hole (4211), or connect the third positioning hole and the second positioning hole (4212).

9. The assembly tool for installing a B-type sleeve according to claim 1, characterized in that: It also includes a gasket (500), which is installed on the inner peripheral wall of the fixing ring (300), and the gasket (500) is sandwiched between the fixing ring (300) and the pipe body (100).

10. The assembly tool for installing a B-type sleeve according to any one of claims 1 to 9, characterized in that: The fixing ring (300) is made of titanium alloy.

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