ferrule

Abstract

This disclosure provides a compression fitting, belonging to the field of pipe connection technology. The compression fitting includes a first connecting segment, a second connecting segment, and an intermediate segment. The first connecting segment, the intermediate segment, and the second connecting segment are sequentially connected, and the first connecting segment and the second connecting segment are detachably connected, so that the first connecting segment, the intermediate segment, and the second connecting segment form a closed ring. The intermediate segment includes multiple hinged segments, with adjacent hinged segments hinged to each other, allowing adjacent hinged segments to expand or contract. This disclosure improves the fit between the compression fitting and the pipe.

Description

Technical Field

[0001] This disclosure belongs to the field of pipe connection technology, and specifically relates to a compression fitting. Background Technology

[0002] A compression fitting is a pipe connection device used for quick pipe connections.

[0003] In related technologies, the ferrule mainly consists of two halves, which are joined together to form a closed ring. When tightening the pipeline, the closed ring formed by the two halves fits over the joint of the pipe ends of two adjacent pipes, locking the joint to prevent leakage of the medium inside the pipeline.

[0004] However, due to limitations in the machining precision and cost of pipes and ferrules, the contact surfaces between the ferrule and the pipe cannot perfectly fit, resulting in one or more sections of ineffective tightening after the ferrule tightens the pipe. These ineffective tightening sections may cause pipe leaks during use. Summary of the Invention

[0005] This disclosure provides a clamping sleeve that improves the fit between the sleeve and the pipe. The technical solution is as follows:

[0006] This disclosure provides a card sleeve, which includes a first connecting segment, a second connecting segment, and an intermediate segment. The first connecting segment, the intermediate segment, and the second connecting segment are connected sequentially, and the first connecting segment and the second connecting segment are detachably connected so that the first connecting segment, the intermediate segment, and the second connecting segment form a closed ring. The intermediate segment includes a plurality of hinge segments, and two adjacent hinge segments are hinged to each other so that the two adjacent hinge segments can be unfolded or folded together.

[0007] In another implementation of this disclosure, a hinge assembly is provided between two adjacent hinge segments; the hinge assembly includes a first hinge bar and a second hinge bar, a first end of the first hinge bar and a first end of the second hinge bar are hinged together, a second end of the first hinge bar is hinged to one of the two adjacent hinge segments, and a second end of the second hinge bar is hinged to the other of the two adjacent hinge segments.

[0008] The hinge assembly has a first position state and a second position state. When the hinge assembly is in the first position state, two adjacent hinge segments are extended. When the hinge assembly is in the second position state, two adjacent hinge segments are retracted.

[0009] In another implementation of this disclosure, one side of the hinge segment has a receiving groove, and the receiving grooves of two adjacent hinge segments are interconnected; when the hinge assembly is in the second position state, the first hinge bar and the second hinge bar are located inside the receiving groove; when the hinge assembly is in the first position state, the first hinge bar and the second hinge bar are located outside the receiving groove and between two adjacent hinge segments.

[0010] In another implementation of this disclosure, the lengths of the first hinge bar and the second hinge bar are different.

[0011] In another implementation of this disclosure, two adjacent hinge segments are respectively a first arc-shaped block and a second arc-shaped block; one end of the first arc-shaped block has an outer flange and the other end has a first hinge shaft; the two ends of the second arc-shaped block have a second hinge shaft and a third hinge shaft that are parallel to each other; the outer flange of the first arc-shaped block is rotatably fitted over the third hinge shaft of the second arc-shaped block, the first hinge shaft of the first arc-shaped block is rotatably inserted into the second end of the first hinge bar, and the second hinge shaft of the second arc-shaped block is rotatably inserted into the second end of the second hinge bar.

[0012] In another implementation of this disclosure, the first arc-shaped block includes a first arc-shaped side plate, a second arc-shaped side plate, and a first arc-shaped bottom plate with the same curvature; the first arc-shaped side plate and the second arc-shaped side plate are arranged opposite to each other, and the first arc-shaped bottom plate is vertically connected between the first arc-shaped side plate and the second arc-shaped side plate, and forms the receiving groove with the first arc-shaped side plate and the second arc-shaped side plate. The receiving groove and the closed annulus are both located on the same side of the first arc-shaped bottom plate. One end of the first arc-shaped bottom plate protrudes outside the first arc-shaped side plate and the second arc-shaped side plate along its own arc length direction to form the outer flange. The first hinge shaft is arranged at a distance from the other end of the first arc-shaped bottom plate, and the two ends of the first hinge shaft are respectively connected to the first arc-shaped side plate and the second arc-shaped side plate.

[0013] In another implementation of this disclosure, the second arc-shaped block includes a third arc-shaped side plate, a fourth arc-shaped side plate, and a second arc-shaped bottom plate; the third arc-shaped side plate and the fourth arc-shaped side plate are arranged opposite to each other, and the second arc-shaped bottom plate is vertically connected between the third arc-shaped side plate and the fourth arc-shaped side plate; the second hinge shaft and the third hinge shaft are respectively located at both ends of the arc length direction of the second arc-shaped bottom plate, and the two ends of the second hinge shaft are respectively connected to the third arc-shaped side plate and the fourth arc-shaped side plate, and the two ends of the third hinge shaft are respectively connected to the third arc-shaped side plate and the fourth arc-shaped side plate.

[0014] In another implementation of this disclosure, the second arc-shaped block further includes a reinforcing plate located between the third arc-shaped side plate and the fourth arc-shaped side plate, and on the side of the second arc-shaped bottom plate away from the hinge assembly. The reinforcing plate is connected to the third arc-shaped side plate, the fourth arc-shaped side plate, and the second arc-shaped bottom plate, respectively.

[0015] In another implementation of this disclosure, the intermediate segment includes six first arc-shaped blocks and two second arc-shaped blocks; in a clockwise direction, the closed ring consists of the first connecting segment, the first arc-shaped block, the first arc-shaped block, the hinge assembly, the second arc-shaped block, the first arc-shaped block, the hinge assembly, the second arc-shaped block, the first arc-shaped block, the hinge assembly, the first arc-shaped block, the first arc-shaped block, and the second connecting segment, which are sequentially hinged together.

[0016] In another implementation of this disclosure, the second connecting segment has a threaded interface at one end facing the first connecting segment, and the first connecting segment has a hinge shaft at one end facing the second connecting segment for hinged with a screw. The second connecting segment and the first connecting segment are connected by the screw.

[0017] The beneficial effects of the technical solutions provided in this disclosure include at least the following:

[0018] When the ferrule provided in this embodiment of the present disclosure is used to fasten the pipe, since the first connecting segment, the second connecting segment and the middle segment of the ferrule are connected in sequence to form a closed ring, the ferrule can be securely fitted onto the outside of the pipe by fitting the closed ring around the outside of the pipe.

[0019] Furthermore, because the intermediate section includes multiple hinged sections, the entire annular surface can be broken into multiple small arc-shaped fastening surfaces, improving the fit between the intermediate section and the pipe, avoiding the occurrence of ineffective fastening length, and ultimately improving the sealing performance of the pipe.

[0020] Furthermore, since two adjacent hinge segments are hinged to each other, allowing them to expand or contract, the inner diameter of the closed annulus can be changed depending on whether the two adjacent hinge segments are expanded or contracted, thus enabling the ferrule to be used with pipes of different diameters. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of the card sleeve provided in the embodiments of this disclosure;

[0023] Figure 2 This is a schematic diagram of the card sleeve provided in another embodiment of the present disclosure;

[0024] Figure 3 A schematic diagram showing the hinge assembly provided in this embodiment of the present disclosure when it is retracted;

[0025] Figure 4 This is a schematic diagram showing the hinge assembly provided in the embodiments of this disclosure when it is unfolded.

[0026] The symbols in the diagram represent the following meanings:

[0027] 1. First connecting section; 11. Screw; 12. Third arc-shaped block;

[0028] 2. Second connecting segment; 21. Fourth arc-shaped block

[0029] 3. Middle section; 31. Hinge section; 311. First arc-shaped block; 3111. First arc-shaped side plate; 3112. Second arc-shaped side plate; 3114. First arc-shaped bottom plate;

[0030] 312. Second arc-shaped block; 3121. Third arc-shaped side plate; 3122. Fourth arc-shaped side plate; 3123. Second arc-shaped bottom plate; 3124. Reinforcing plate;

[0031] 32. Hinge assembly; 321. First hinge bar; 322. Second hinge bar; 33. Third connecting section;

[0032] 100, outer flange; 200, first hinge shaft; 300, second hinge shaft; 400, third hinge shaft. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this disclosure clearer, the embodiments of this disclosure will be described in further detail below with reference to the accompanying drawings.

[0034] This disclosure provides a card sleeve, such as Figure 1 and 2 As shown, the sleeve includes a first connecting segment 1, a second connecting segment 2, and a middle segment 3. The first connecting segment 1, the middle segment 3, and the second connecting segment 2 are connected in sequence, and the first connecting segment 1 and the second connecting segment 2 are detachably connected so that the first connecting segment 1, the middle segment 3, and the second connecting segment 2 form a closed ring.

[0035] The middle section 3 includes multiple hinged sections 31, with two adjacent hinged sections 31 hinged to each other so that the two adjacent hinged sections can be unfolded or folded together.

[0036] When the ferrule provided in this embodiment of the present disclosure is used to fasten the pipe, since the ferrule has a first connecting segment 1, a second connecting segment 2, and an intermediate segment 3, and the first connecting segment 1, the intermediate segment 3, and the second connecting segment 2 are connected in sequence to form a closed ring, the ferrule can be securely fitted onto the outside of the pipe by fitting the closed ring around the outside of the pipe.

[0037] Furthermore, since the intermediate section 3 includes multiple hinged sections 31, the fastening surface of the entire annular surface can be broken into multiple small arc-shaped fastening surfaces, improving the fit between the intermediate section 3 and the pipe, avoiding the occurrence of ineffective fastening length, and ultimately improving the sealing performance of the pipe.

[0038] Furthermore, since two adjacent hinge segments 31 are hinged to each other, they can be opened or closed. This allows the inner diameter of the closed annulus to be changed depending on whether the two adjacent hinge segments 31 are opened or closed, thus enabling the ferrule to be used in pipes of different diameters.

[0039] In practical applications, KF40 and KF50 ferrules are extensively used in MOCVD (Metal-organic Chemical Vapor Deposition) equipment required for LED production. Frequent disassembly and tightening of these two types of ferrules are necessary during equipment maintenance, resulting in high usage and scrap rates for both specifications. A certain quantity of these two types of ferrules needs to be stored in the equipment warehouse.

[0040] The above-mentioned clamping sleeves provided in this disclosure can standardize the clamping sleeve specifications, enabling the clamping sleeves to simultaneously meet the pipe diameters corresponding to KF40 and KF50, thereby improving the work efficiency of equipment personnel.

[0041] See also Figure 2 Optionally, a hinge assembly 32 is provided between two adjacent hinge segments 31. The hinge assembly 32 includes a first hinge bar 321 and a second hinge bar 322, with a first end of the first hinge bar 321 and a first end of the second hinge bar 322 hinged together, a second end of the first hinge bar 321 hinged to one of the two adjacent hinge segments 31, and a second end of the second hinge bar 322 hinged to the other of the two adjacent hinge segments 31.

[0042] The hinge assembly 32 has a first position state and a second position state. When the hinge assembly 32 is in the first position state, the two adjacent hinge segments 31 are unfolded. When the hinge assembly 32 is in the second position state, the two adjacent hinge segments 31 are retracted.

[0043] In the above implementation, in the above structure, a hinge assembly 32 is provided between two adjacent hinge segments 31. The connection arc length of the two adjacent hinge segments 31 can be adaptively changed by the hinge assembly 32 being in the first position state or the second position state, thereby changing the inner diameter of the ferrule.

[0044] Optionally, one side of the hinge segment 31 has a receiving groove, and the receiving grooves of two adjacent hinge segments 31 are interconnected.

[0045] When the hinge assembly 32 is in the second position, the first hinge bar 321 and the second hinge bar 322 are located in the receiving groove.

[0046] When the hinge assembly 32 is in the first position, the first hinge bar 321 and the second hinge bar 322 are located outside the receiving groove and between two adjacent hinge segments 31.

[0047] In the above implementation, a receiving groove is provided on one side of the hinge section 31. The hinge assembly 32 can be accommodated through the receiving groove so that when the hinge assembly 32 is in the second position, it will not affect the connection of the hinge section 31 to the pipe. At the same time, the hinge assembly 32 can be restricted by the outer wall of the pipe and will not easily change from the retracted state to the unfolded state.

[0048] Figure 3 This is a schematic diagram showing the hinge assembly provided in this embodiment when it is retracted, in conjunction with... Figure 3 When the hinge assembly 32 is in the second position, the first hinge bar 321 and the second hinge bar 322 are located in the receiving groove of one of the two adjacent hinge segments 31. At this time, the connecting arc length of the two adjacent hinge segments 31 is the sum of the actual arc lengths of the two adjacent hinge segments 31, and does not involve the length of the hinge assembly 32.

[0049] Figure 4 This is a schematic diagram showing the hinge assembly provided in the embodiments of this disclosure when unfolded, in conjunction with... Figure 4 When the hinge assembly 32 is in the first position, the first hinge bar 321 and the second hinge bar 322 are located outside the receiving groove and between two adjacent hinge segments 31. The connecting arc length of the two adjacent hinge segments 31 is the sum of the actual arc lengths of the two adjacent hinge segments 31 plus the length of the first hinge bar 321 and the length of the second hinge bar 322.

[0050] Optionally, the lengths of the first hinge bar 321 and the second hinge bar 322 are different. This facilitates the arrangement of the first hinge bar 321 and the second hinge bar 322 within the hinge segment 31.

[0051] Optionally, two adjacent hinge segments 31 are respectively a first arc-shaped block 311 and a second arc-shaped block 312. One end of the first arc-shaped block 311 has an outer flange 100, and the other end has a first hinge shaft 200. The two ends of the second arc-shaped block 312 have a second hinge shaft 300 and a third hinge shaft 400 that are parallel to each other. The outer flange 100 of the first arc-shaped block 311 is rotatably fitted over the third hinge shaft 400 of the second arc-shaped block 312.

[0052] The first hinge shaft 200 of the first arc-shaped block 311 is rotatably inserted into the second end of the first hinge bar 321, and the second hinge shaft 300 of the second arc-shaped block 312 is rotatably inserted into the second end of the second hinge bar 322.

[0053] In the above implementation, two adjacent hinge segments 31 are set as first arc blocks 311 and second arc blocks 312 are set as first arc blocks 311. In this way, the middle segment 3 can be segmented by multiple first arc blocks 311 and second arc blocks 312, so that the ferrule can better fit the pipe and improve the fit between the ferrule and the pipe.

[0054] Furthermore, the two ends of the second arc-shaped block 312 are respectively provided with a second hinge shaft 300 and a third hinge shaft 400. In this way, the second arc-shaped block 312 and the first arc-shaped block 311 can be hinged together by the hinge assembly 32 through the cooperation of the second arc-shaped block 312 with the first hinge bar 321 and the second hinge bar 322 in the hinge assembly 32.

[0055] In other words, the above structure allows the hinge assembly 32 to be easily connected to two adjacent hinge segments 31.

[0056] The first arc-shaped block 311 includes a first arc-shaped side plate 3111, a second arc-shaped side plate 3112, and a first arc-shaped bottom plate 3114, all with the same curvature.

[0057] The first arc-shaped side plate 3111 and the second arc-shaped side plate 3112 are arranged opposite to each other. The first arc-shaped bottom plate 3114 is vertically connected between the first arc-shaped side plate 3111 and the second arc-shaped side plate 3112, and forms a receiving groove with the first arc-shaped side plate 3111 and the second arc-shaped side plate 3112. The receiving groove and the closed ring are both located on the same side of the first arc-shaped bottom plate 3114. One end of the first arc-shaped bottom plate 3114 protrudes outside the first arc-shaped side plate 3111 and the second arc-shaped side plate 3112 along its own arc length direction to form an outer flange 100. The first hinge shaft 200 is arranged at intervals with the other end of the first arc-shaped bottom plate 3114. The two ends of the first hinge shaft 200 are respectively connected to the first arc-shaped side plate 3111 and the second arc-shaped side plate 3112.

[0058] In the above implementation, the first arc-shaped block 311 is configured as a structure of a first arc-shaped side plate 3111, a second arc-shaped side plate 3112, and a first arc-shaped bottom plate 3114. This allows the outer flange 100 to be formed through the first arc-shaped bottom plate 3114, while also facilitating the arrangement of the first hinge shaft 200 at the opposite position of the outer flange 100.

[0059] For example, the first arc-shaped block 311 is an integrally formed structural component.

[0060] This facilitates the processing of the first arc-shaped block 311 while ensuring that the first arc-shaped block 311 has sufficient structural strength.

[0061] Optionally, the second arc-shaped block 312 includes a third arc-shaped side plate 3121, a fourth arc-shaped side plate 3122, and a second arc-shaped bottom plate 3123.

[0062] The third arc-shaped side plate 3121 and the fourth arc-shaped side plate 3122 are arranged opposite to each other, and the second arc-shaped bottom plate 3123 is vertically connected between the third arc-shaped side plate 3121 and the fourth arc-shaped side plate 3122.

[0063] The second hinge shaft 300 and the third hinge shaft 400 are located at both ends of the arc length direction of the second arc-shaped base plate 3123, respectively. The two ends of the second hinge shaft 300 are connected to the third arc-shaped side plate 3121 and the fourth arc-shaped side plate 3122, respectively. The two ends of the third hinge shaft 400 are connected to the third arc-shaped side plate 3121 and the fourth arc-shaped side plate 3122, respectively.

[0064] In the above implementation, the second arc-shaped block 312 is configured as a structure consisting of a third arc-shaped side plate 3121, a fourth arc-shaped side plate 3122, and a second arc-shaped bottom plate 3123. This allows the third arc-shaped side plate 3121 and the fourth arc-shaped side plate 3122 to be connected as one unit through the second arc-shaped bottom plate 3123. At the same time, a second hinge shaft 300 and a third hinge shaft 400 can be arranged at both ends of the second arc-shaped block 312.

[0065] Optionally, the second arc-shaped block 312 further includes a reinforcing plate 3124, which is located between the third arc-shaped side plate 3121 and the fourth arc-shaped side plate 3122, and on the side of the second arc-shaped bottom plate 3123 away from the hinge assembly 32. The reinforcing plate 3124 is connected to the third arc-shaped side plate 3121, the fourth arc-shaped side plate 3122, and the second arc-shaped bottom plate 3123, respectively.

[0066] In the above implementation, a reinforcing plate 3124 is added to the second arc-shaped block 312, which can increase the structural strength of the second arc-shaped block 312.

[0067] For example, the second arc-shaped block 312 is an integrally formed structural component, which facilitates the processing of the second arc-shaped block 312 while ensuring that the second arc-shaped block 312 has sufficient structural strength.

[0068] In this embodiment, when the second arc-shaped block 312 and the adjacent first arc-shaped block 311 are hinged together by the hinge assembly 32, when the hinge assembly 32 is in the second position state, the first hinge bar 321 and the second hinge bar 322 are both located in the receiving groove of the second arc-shaped block 312.

[0069] Optionally, the intermediate segment 3 also includes a plurality of third connecting segments 33, one of which is hinged to the first connecting segment 1, one of which is not hinged to the first connecting segment 1 is hinged to the second connecting segment 2, and the other third connecting segments 33 are respectively hinged to the hinged segment 31 or the adjacent third connecting segment 33.

[0070] In the above implementation, the arrangement of the third connecting segment 33 can be used in conjunction with multiple hinge segments 31 to more conveniently form a closed ring. That is, the third connecting segment 33 is for convenient hinge connection with the hinge segment 31 to form a closed ring.

[0071] In other words, by arranging the third connecting segment 33, the first arc-shaped block 311 and the second arc-shaped block 312 are not necessarily hinged together by the hinge assembly 32; the first arc-shaped block 311 can be directly hinged to the second arc-shaped block 312. In this way, a closed ring can be formed more easily with a simple structure.

[0072] For example, the structure of the third connecting segment 33 is the same as that of the first arc-shaped block 311, and will not be described again here.

[0073] In this embodiment, there are three hinge components 32.

[0074] The intermediate segment 3 includes six first arc-shaped blocks 311 and two second arc-shaped blocks 312. In a clockwise direction, within the closed ring formed by the sleeve, the sequence is: first connecting segment 1, first arc-shaped block 311, first arc-shaped block 311, hinge assembly 32, second arc-shaped block 312, first arc-shaped block 311, hinge assembly 32, second arc-shaped block 312, first arc-shaped block 311, hinge assembly 32, first arc-shaped block 311, first arc-shaped block 311, second connecting segment 2.

[0075] The first connecting segment 1, the second connecting segment 2, and the first arc block 311 or the second arc block 312 can all cover an arc range of approximately 35°.

[0076] Of course, the closed ring can be other structures, such as replacing the middle segment 3 with five first arc-shaped blocks 311, five second arc-shaped blocks 312, and four hinge assemblies 32. The specific number of the first arc-shaped blocks 311, the second arc-shaped blocks 312, and the hinge assemblies 32 can be flexibly adjusted by changing the curvature of the corresponding first arc-shaped blocks 311 and second arc-shaped blocks 312. Of course, other numbers are also possible, and this disclosure does not limit this.

[0077] See also Figure 1 The second connecting segment 2 has a threaded interface at one end facing the first connecting segment 1, and the first connecting segment 1 has a hinge shaft at one end facing the second connecting segment 2 for hinged with the screw. The second connecting segment 2 and the first connecting segment 1 are connected by the screw.

[0078] In the above implementation, the above settings can be easily detached and connected through the first connecting segment 1 and the second connecting segment 2.

[0079] In this embodiment, the first connecting segment 1 includes a screw 11 and a third arc-shaped block 12. The first end of the screw 11 is hinged to one end of the third arc-shaped block 12, the second end of the screw 11 is threaded to the second connecting segment 2, and the other end of the third arc-shaped block 12 is hinged to the middle segment 3.

[0080] The second connecting section 2 includes a fourth arc-shaped block 21, with a threaded interface located at the first end of the fourth arc-shaped block 21 (facing the third arc-shaped block 12). The screw 11 is threadedly connected to the threaded interface. The second end of the fourth arc-shaped block 21 is hinged to the intermediate section 3.

[0081] In the above implementation, the first connecting segment 1 and the second connecting segment 2 are configured as described above. This facilitates the threaded connection between the first connecting segment 1 and the second connecting segment 2, thereby achieving a detachable connection. At the same time, they can be hinged together with the two ends of the middle segment 3 respectively.

[0082] For example, for ease of connection, the second end of the third arc-shaped block 12 has a first notch, and a hinge shaft is provided at the first notch, which is inserted into the middle section 3.

[0083] Similarly, for ease of connection, the second end of the fourth arc-shaped block 21 also has a second notch, and a hinge shaft is also provided at the second notch, which is also inserted into the middle section 3.

[0084] In this embodiment, for ease of processing, the first arc block 311, the second arc block 312, the third arc block 12, and the fourth arc block 21 are all integrally cast structural parts, which facilitates processing while ensuring that the ferrule has sufficient strength.

[0085] The following is a brief introduction to the usage process of the card sleeve provided in this embodiment:

[0086] When the ferrule provided in this embodiment of the present disclosure is used to fasten a pipe with a diameter of KF40, the first connecting section 1 and the second connecting section 2 can be opened first, so that the hinge components 32 in the ferrule are all in the second position state. That is, each hinge component 32 can be manually operated to bring each hinge component 32 into the retracted state.

[0087] Then, the ferrule is fitted onto the outside of a pipe with a diameter of KF40, and the first connecting section 1 and the second connecting section 2 are connected so that the first connecting section 1, the second connecting section 2 and the middle section 3 form a closed ring, which can be firmly fitted onto the outside of the pipe.

[0088] When the ferrule provided in this embodiment of the present disclosure is used to fasten a pipe with a diameter of KF50, the first connecting section 1 and the second connecting section 2 can be opened first, so that the hinge components 32 in the ferrule are all in the first position. That is, by manual operation, all hinge components 32 are in the unfolded state.

[0089] Then, the ferrule is fitted onto the outside of a pipe with a diameter of KF50, and the first connecting section 1 and the second connecting section 2 are connected so that the first connecting section 1, the second connecting section 2 and the middle section 3 form a closed ring, which can be firmly fitted onto the outside of the KF50 pipe.

[0090] As can be seen, the above-mentioned clamping sleeves provided in this disclosure can standardize the clamping sleeve specifications, enabling the clamping sleeves to simultaneously meet the pipe diameters corresponding to KF40 and KF50, thereby improving the work efficiency of equipment personnel.

[0091] The above description is merely an optional embodiment of this disclosure and is not intended to limit this disclosure. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the protection scope of this disclosure.

Claims

1. A card sleeve, characterized in that, The sleeve includes a first connecting segment (1), a second connecting segment (2), and a middle segment (3). The first connecting segment (1), the middle segment (3), and the second connecting segment (2) are connected in sequence, and the first connecting segment (1) and the second connecting segment (2) are detachably connected so that the first connecting segment (1), the middle segment (3), and the second connecting segment (2) form a closed ring. The intermediate section (3) includes multiple hinge segments (31), two adjacent hinge segments (31) are hinged to each other, and a hinge assembly (32) is provided between two adjacent hinge segments (31). The hinge assembly (32) includes a first hinge bar (321) and a second hinge bar (322). The first end of the first hinge bar (321) and the first end of the second hinge bar (322) are hinged. The second end of the first hinge bar (321) is hinged to one of the two adjacent hinge segments (31), and the second end of the second hinge bar (322) is hinged to the other of the two adjacent hinge segments (31). The lengths of the first hinge bar (321) and the second hinge bar (322) are not the same. One side of the hinge segment (31) has a receiving groove. The hinge assembly (32) has a first position state and a second position state. When the hinge assembly (32) is in the first position state, two adjacent hinge segments (31) are unfolded, the first hinge bar (321) and the second hinge bar (322) are located outside the receiving groove and between the two adjacent hinge segments (31). The connecting arc length of the two adjacent hinge segments (31) is the sum of the actual arc lengths of the two adjacent hinge segments (31) plus the length of the first hinge bar (321) and the length of the second hinge bar (322). When the hinge assembly (32) is in the second position state, two adjacent hinge segments (31) are retracted, the receiving grooves of the two adjacent hinge segments (31) are interconnected, the first hinge bar (321) and the second hinge bar (322) are located inside the receiving groove, and the connecting arc length of the two adjacent hinge segments (31) is the sum of the actual arc lengths of the two adjacent hinge segments (31).

2. The card sleeve according to claim 1, characterized in that, The two adjacent hinge segments (31) are respectively the first arc block (311) and the second arc block (312); The first arc-shaped block (311) has an outer flange (100) at one end and a first hinge shaft (200) at the other end; The second arc-shaped block (312) has a second hinge axis (300) and a third hinge axis (400) that are parallel to each other at both ends; The outer flange (100) of the first arc-shaped block (311) is rotatably fitted over the third hinge shaft (400) of the second arc-shaped block (312), the first hinge shaft (200) of the first arc-shaped block (311) is rotatably inserted into the second end of the first hinge bar (321), and the second hinge shaft (300) of the second arc-shaped block (312) is rotatably inserted into the second end of the second hinge bar (322).

3. The card sleeve according to claim 2, characterized in that, The first arc-shaped block (311) includes a first arc-shaped side plate (3111), a second arc-shaped side plate (3112), and a first arc-shaped bottom plate (3114) with the same curvature; The first arc-shaped side plate (3111) and the second arc-shaped side plate (3112) are arranged opposite to each other. The first arc-shaped bottom plate (3114) is vertically connected between the first arc-shaped side plate (3111) and the second arc-shaped side plate (3112), and forms the receiving groove with the first arc-shaped side plate (3111) and the second arc-shaped side plate (3112). The receiving groove and the closed ring are both located on the same side of the first arc-shaped bottom plate (3114). One end of the first arc-shaped bottom plate (3114) protrudes out of the first arc-shaped side plate (3111) and the second arc-shaped side plate (3112) along its own arc length direction to form the outer flange (100). The first hinge shaft (200) is arranged at intervals with the other end of the first arc-shaped bottom plate (3114). The two ends of the first hinge shaft (200) are respectively connected to the first arc-shaped side plate (3111) and the second arc-shaped side plate (3112).

4. The card sleeve according to claim 2, characterized in that, The second arc-shaped block (312) includes a third arc-shaped side plate (3121), a fourth arc-shaped side plate (3122), and a second arc-shaped bottom plate (3123); The third arc-shaped side plate (3121) and the fourth arc-shaped side plate (3122) are arranged opposite to each other, and the second arc-shaped bottom plate (3123) is vertically connected between the third arc-shaped side plate (3121) and the fourth arc-shaped side plate (3122); The second hinge shaft (300) and the third hinge shaft (400) are located at both ends of the arc length direction of the second arc-shaped base plate (3123). The two ends of the second hinge shaft (300) are connected to the third arc-shaped side plate (3121) and the fourth arc-shaped side plate (3122) respectively. The two ends of the third hinge shaft (400) are connected to the third arc-shaped side plate (3121) and the fourth arc-shaped side plate (3122) respectively.

5. The card sleeve according to claim 4, characterized in that, The second arc-shaped block (312) further includes a reinforcing plate (3124), which is located between the third arc-shaped side plate (3121) and the fourth arc-shaped side plate (3122), and on the side of the second arc-shaped bottom plate (3123) away from the hinge assembly (32). The reinforcing plate (3124) is connected to the third arc-shaped side plate (3121), the fourth arc-shaped side plate (3122), and the second arc-shaped bottom plate (3123) respectively.

6. The card sleeve according to claim 2, characterized in that, The intermediate segment (3) includes six first arc-shaped blocks (311) and two second arc-shaped blocks (312); In a clockwise direction, the closed ring consists of the first connecting segment (1), the first arc block (311), the first arc block (311), the hinge assembly (32), the second arc block (312), the first arc block (311), the hinge assembly (32), the second arc block (312), the first arc block (311), the hinge assembly (32), the first arc block (311), the first arc block (311), and the second connecting segment (2), which are connected sequentially.

7. The card sleeve according to any one of claims 1-6, characterized in that, The second connecting segment (2) has a threaded interface at one end facing the first connecting segment (1), and the first connecting segment (1) has a hinge shaft at one end facing the second connecting segment (2) for hinged with the screw. The second connecting segment (2) and the first connecting segment (1) are connected by the screw.

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