Support frame

Abstract

The utility model provides a supporting frame which is used for supporting a double-wall pipe, and the double-wall pipe comprises an inner pipe and an outer pipe which are arranged at intervals inside and outside. The supporting frame comprises a hoop and a plurality of supporting assemblies. The hoop is used for being arranged on the periphery of the inner pipe in a surrounding mode. The multiple supporting assemblies are arranged on the periphery of the hoop at intervals in the circumferential direction. The supporting assembly comprises an adjusting rod and a supporting seat, and the adjusting rod is fixedly connected with the hoop. The supporting base is movably connected to the end, away from the hoop, of the adjusting rod and used for abutting against the inner wall of the outer pipe. The supporting base can move along the adjusting rod to be close to or away from the hoop so that the position of the supporting base can be adjusted, the length size of the supporting assembly can be adjusted to adapt to different distances between the inner pipe and the outer pipe, and universality is high.

Description

Technical Field

[0001] The utility model relates to the technical field of double-walled pipes, in particular to a supporting frame. Background Art

[0002] Double-walled pipes are generally formed by inserting a larger diameter seamless steel pipe outside a smaller diameter seamless steel pipe. During this process, it is often necessary to support and fix the inner pipe and the outer pipe to fix the relative position between the inner pipe and the outer pipe.

[0003] However, due to the influence of factors such as the inner and outer tube materials and the medium temperature, the thermal expansion and contraction properties of the inner and outer tubes are different, and the distance between the inner and outer tubes of different double-walled tubes is different. At present, the support and fixing device is often designed according to the actual situation of the inner and outer tubes of the double-walled tube, that is, the existing double-walled tube support and fixing device can only be applied to double-walled tubes of one specification, and cannot adapt to the change of the distance between the inner and outer tubes, and is not universal. Utility Model Content

[0004] The utility model aims to provide a support frame which can adapt to the change of the distance between the inner and outer tubes.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] According to one aspect of the present application, the present application provides a support frame for supporting a double-walled pipe, wherein the double-walled pipe comprises an inner pipe and an outer pipe spaced apart from each other, and the support frame comprises:

[0007] A hoop, which is used to be arranged around the outer circumference of the inner tube;

[0008] A plurality of support components are arranged at intervals along the circumferential direction on the outer circumference of the clamp; the support component comprises an adjusting rod and a support seat, the adjusting rod is fixedly connected to the clamp, the support seat is movably connected to an end of the adjusting rod away from the clamp, and the support seat is used to abut against the inner wall of the outer tube;

[0009] Wherein, the support seat can move along the adjusting rod to be closer to or farther away from the clamp, so as to adjust the length of the supporting assembly.

[0010] In some embodiments, the adjusting rod and the supporting seat are movably connected by screw connection.

[0011] In some embodiments, the outer circumference of the adjustment rod is provided with external threads;

[0012] The support seat is provided with a receiving groove with an opening facing the clamp, and an adjusting nut is fixed to the end of the support seat facing the clamp. The adjusting nut is provided with an internal thread matching the external thread, and the external thread is threadedly connected with the internal thread to realize a movable connection between the adjusting nut and the adjusting rod.

[0013] In some embodiments, the outer circumference of the adjustment rod is provided with external threads;

[0014] The support seat is provided with a connecting groove, the opening of which faces the clamp, the inner wall of the connecting groove is provided with an internal thread matching the external thread, and the external thread is screwed with the internal thread to achieve a movable connection between the support seat and the adjusting rod.

[0015] In some embodiments, the support assembly further comprises an abutment member, which is disposed at one end of the support seat away from the adjustment rod and is used to abut against the inner wall of the outer tube;

[0016] The abutting piece is made of antistatic material.

[0017] In some embodiments, the clamp includes a plurality of clamps, and the plurality of clamps are connected end to end; the clamps are arc-shaped, and the central angles of the clamps are consistent.

[0018] In some embodiments, a plurality of the clamps are detachably connected to each other;

[0019] The clamp comprises a main body and connecting parts arranged at both ends of the main body, the main body is arc-shaped, the main body is used to be arranged around the outer circumference of the inner tube, and the main body is connected to the adjusting rod;

[0020] The connecting portion protrudes outwardly from the main body portion in the radial direction, and the connecting portions of two adjacent clamps are abutted against and connected and fixed.

[0021] In some embodiments, each of the connecting parts is provided with a connecting hole, and a fastener is passed through the connecting holes on the connecting parts of two adjacent clamps to achieve connection and fixation of the two adjacent clamps.

[0022] In some embodiments, the support frame further includes an isolation piece for preventing static electricity, and the isolation piece is disposed on the inner side of the clamp.

[0023] In some embodiments, there are multiple isolating members, and the multiple isolating members are distributed on the inner side of the clamp at intervals along the circumferential direction.

[0024] It can be seen from the above technical solution that the utility model has at least the following advantages and positive effects:

[0025] In the utility model, the support frame includes a clamp and a plurality of support components. The clamp is used to be arranged around the outer periphery of the inner tube. The plurality of support components are arranged at intervals along the circumferential direction on the outer periphery of the clamp. The support component includes an adjustment rod and a support seat, and the adjustment rod is fixedly connected to the clamp. The support seat is movably connected to the end of the adjustment rod away from the clamp, and the support seat is used to abut against the inner wall of the outer tube.

[0026] In the above-mentioned support frame, the support seat is movably connected to the adjustment rod, so that the support seat can move along the adjustment rod to get closer to or away from the clamp, so as to adjust the position of the support seat relative to the adjustment rod, and then adjust the length of the support assembly, so that it can adapt to the support installation of inner tubes and outer tubes with different spacings, so that each of the support seats can achieve an ideal support effect, and the versatility is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 Schematic diagram of the structure of the support frame in this embodiment.

[0028] Figure 2 It is a schematic diagram of the structure of the support frame without the abutment member in other embodiments.

[0029] The following are the descriptions of the reference numerals:

[0030] 110, inner tube; 120, outer tube;

[0031] 1. clamp; 11. clamp; 111. main body; 112. connecting part;

[0032] 2. Support assembly; 21. Adjustment rod; 22. Support seat; 23. Adjustment nut; 24. Abutment member;

[0033] 3. Fasteners;

[0034] 4. Isolation parts. DETAILED DESCRIPTION

[0035] Typical embodiments that embody the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various changes in different embodiments without departing from the scope of the present invention, and the descriptions and illustrations therein are essentially for illustrative purposes rather than for limiting the present invention.

[0036] In the description of the present application, it should be understood that in the embodiments shown in the drawings, the indications of directions or positional relationships (such as up, down, left, right, front and back, etc.) are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation. These descriptions are appropriate when these elements are in the positions shown in the drawings. If the descriptions of the positions of these elements change, the indications of these directions also change accordingly.

[0037] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0038] The present application provides a support frame for supporting double-walled pipes.

[0039] The double-walled tube includes an inner tube 110 and an outer tube 120 that are spaced apart from each other. The materials of the inner tube 110 and the outer tube 120 may be the same or different. The materials of the inner tube 110 and the outer tube 120 may both be non-rigid materials or rigid materials, or one of them may be non-rigid materials and the other may be rigid materials.

[0040] In actual application, the support frame is supported between the inner tube 110 and the outer tube 120 , so that the position between the inner tube 110 and the outer tube 120 is relatively fixed, so as to achieve a stable support installation between the inner tube 110 and the outer tube 120 .

[0041] The specific embodiments of the support frame of the present application are described in detail below in conjunction with the accompanying drawings.

[0042] Figure 1 Schematic diagram of the structure of the support frame in this embodiment.

[0043] refer to Figure 1 The support frame includes a clamp 1 and a plurality of support components 2. The clamp 1 is used to be arranged around the outer circumference of the inner tube 110. The plurality of support components 2 are arranged at intervals along the circumferential direction on the outer circumference of the clamp 1. The support component 2 includes an adjusting rod 21 and a support seat 22, and the adjusting rod 21 is fixedly connected to the clamp 1. The support seat 22 is movably connected to the end of the adjusting rod 21 away from the clamp 1, and the support seat 22 is used to abut against the inner wall of the outer tube 120. Among them, the support seat 22 can move along the adjusting rod 21 to approach or move away from the clamp 1, so as to adjust the position of the support seat 22 relative to the adjusting rod 21, and then adjust the length of the support component 2, so that it can adapt to the support installation of the inner tube 110 and the outer tube 120 with different spacings, so that each support seat 22 can achieve an ideal support effect, and the versatility is high.

[0044] The clamp 1 has a through hole for accommodating the inner tube 110 so that the clamp 1 is arranged around the outer circumference of the inner tube 110 .

[0045] In this embodiment, the clamp 1 includes a plurality of clamps 11 , and the plurality of clamps 11 are connected end to end.

[0046] The plurality of clamps 11 are detachably connected to each other, so as to facilitate the connection or separation of the plurality of clamps 11 .

[0047] Specifically, the clamp 11 includes a main body 111 and connecting parts 112 arranged at both ends of the main body 111. The main body 111 is used to be arranged around the outer circumference of the inner tube 110. The connecting parts 112 protrude radially outward from the main body 111, and the connecting parts 112 of two adjacent clamps 11 are attached to each other and connected and fixed.

[0048] Each connecting portion 112 is provided with a connecting hole, and the fastener 3 is passed through the connecting hole on the connecting portions 112 of two adjacent clamps 11 to achieve connection and fixation of the two adjacent clamps 11 .

[0049] In this embodiment, the clamp 11 is arc-shaped so as to match the outer circumference of the inner tube 110. Specifically, the main body 111 is arc-shaped.

[0050] In this embodiment, the central angles of the clamps 11 are consistent, so that when the multiple clamps 11 are connected into one, the connecting parts 112 are evenly distributed, so that the clamp 1 itself is evenly stressed, which can balance and enhance the stability of the clamp 1.

[0051] In other embodiments, the clamp 1 may include a main body 111 and connecting parts 112 arranged at opposite ends of the main body 111. At this time, the two connecting parts 112 are attached to each other and connected and fixed, so that the main body 111 is enclosed to form a ring, so that it can be arranged around the outer periphery of the inner tube 110. The two connecting parts 112 are detachably connected, and the specific connection method is described above.

[0052] In this embodiment, a plurality of support components 2 are arranged at intervals along the circumferential direction on the outer periphery of the clamp 1. The intervals between any two adjacent support components 2 are consistent.

[0053] The supporting assembly 2 includes an adjusting rod 21 and a supporting seat 22 .

[0054] The adjusting rod 21 is fixedly connected to the clamp 1. Specifically, the adjusting rod 21 is fixedly connected to the main body 111.

[0055] The support seat 22 is connected to the end of the adjustment rod 21 away from the clamp 1, and the support seat 22 is used to abut against the inner wall of the outer tube 120. In the actual application of the double-walled tube, due to the influence of factors such as the material of the outer tube 120 and the inner tube 110 and the medium temperature, the thermal expansion and contraction properties of the outer tube 120 and the inner tube 110 are different, which easily leads to relative movement between the outer tube 120 and the inner tube 110. At this time, the support seat 22 is connected to the inner wall of the outer tube 120 in a non-fixed abutting form to adapt to the relative movement between the inner tube 110 and the outer tube 120.

[0056] In addition, since the intervals between any two adjacent support assemblies 2 are consistent, when the clamp 1 is arranged around the outer periphery of the inner tube 110 and the support seat 22 abuts against the inner wall of the outer tube 120, the inner tube 110 and the outer tube 120 can be uniformly stressed to fix the relative position between the inner tube 110 and the outer tube 120, thereby achieving stable support between the inner tube 110 and the outer tube 120.

[0057] In this embodiment, the support seat 22 is movably connected to the adjusting rod 21, so that the support seat 22 can move along the adjusting rod 21 to get closer to or away from the clamp 1, and the position of the support seat 22 relative to the adjusting rod 21 is adjusted, thereby adjusting the length of the support assembly 2 to adapt to the support between the inner tube 110 and the outer tube 120 with different spacings, so that each support seat 22 can achieve an ideal support effect.

[0058] The support seat 22 is provided with a receiving groove with an opening toward the clamp 1 for receiving the adjusting rod 21 , so that when the support seat 22 moves relative to the adjusting rod 21 , the adjusting rod 21 can move in the receiving groove.

[0059] In this embodiment, the adjusting rod 21 and the supporting seat 22 are movably connected by screw connection. The outer periphery of the adjusting rod 21 is provided with external threads.

[0060] The support assembly 2 further includes an adjusting nut 23, which is fixed to the end of the support seat 22 facing the clamp 1. The adjusting nut 23 is provided with an internal thread matching the external thread, and the external thread and the internal thread are screwed to realize the movable connection between the adjusting nut 23 and the adjusting rod 21.

[0061] In actual use, according to the actual structure, by rotating the support seat 22, the adjusting nut 23 can be moved relative to the adjusting rod 21 through the cooperation between the internal thread and the external thread, thereby realizing the movement of the support seat 22 relative to the adjusting rod 21, so as to adjust the position of the support seat 22 relative to the adjusting rod 21, so that each support seat 22 can achieve an ideal support effect. Among them, the rotation of the support seat 22 needs to be achieved by external force, that is, when no external force is applied, the relative position between the adjusting nut 23 and the adjusting rod 21 is fixed and will not slide relative to each other, especially when the inner tube 110 and the outer tube 120 have a certain weight, the rigid support method of the adjusting rod 21 and the adjusting nut 23 using threaded connection makes the stability higher and the effect better.

[0062] In other embodiments, a connection groove is provided on the support seat 22, the opening of the connection groove faces the clamp 1, an internal thread is provided on the inner wall of the connection groove, and an external thread matching the internal thread is provided on the outer periphery of the adjustment rod 21, and the external thread is screwed with the internal thread to realize the movable connection between the support seat 22 and the adjustment rod 21. That is, the support seat 22 is directly screwed with the adjustment rod 21.

[0063] In this embodiment, the support assembly 2 may further include an abutment member 24, which is disposed at one end of the support seat 22 away from the adjustment rod 21 and is used to abut against the inner wall of the outer tube 120. Specifically, one end of the support seat 22 away from the adjustment rod 21 is provided with a receiving groove with an opening facing away from the adjustment rod 21, one end of the abutment member 24 is received in the receiving groove and fixedly connected to the support seat 22, and the other end of the abutment member 24 protrudes out of the support seat 22 in a direction away from the adjustment rod 21 and is used to abut against the inner wall of the outer tube 120. In other embodiments, the abutment member 24 may also be directly fixed to the end of the support seat 22 away from the adjustment rod 21.

[0064] In this embodiment, the abutment 24 is made of antistatic material. In actual application, due to the influence of factors such as the material of the outer tube 120 and the inner tube 110 and the medium temperature, the thermal expansion and contraction properties of the outer tube 120 and the inner tube 110 are different, which causes relative movement between the outer tube 120 and the inner tube 110. The abutment 24 is made of antistatic material, which can avoid the relative friction between the abutment 24 and the inner wall of the outer tube 120 when the outer tube 120 and the inner tube 110 move relative to each other and generate static electricity, thereby achieving the purpose of ensuring the safety performance of the double-walled tube.

[0065] In other embodiments, antistatic material can be sprayed on the periphery of the abutment 24 to form an antistatic film layer to prevent static electricity from being generated due to relative friction between the abutment 24 and the inner wall of the outer tube 120 when relative movement occurs between the outer tube 120 and the inner tube 110, thereby ensuring the safety performance of the double-walled tube and achieving the purpose of ensuring the safety performance of the double-walled tube.

[0066] In other embodiments, the abutment member 24 may be omitted. Figure 2 This is a schematic diagram of the structure of the support frame without the abutment member 24 in other embodiments. Figure 2 In this embodiment, the support seat 22 is directly in contact with the inner wall of the outer tube 120. At this time, the support seat 22 is made of antistatic material, or an antistatic film layer is formed by spraying antistatic material on the outer periphery of the support seat 22 to prevent the support seat 22 from generating static electricity due to relative friction with the inner wall of the outer tube 120 when the outer tube 120 and the inner tube 110 move relative to each other, thereby ensuring the safety performance of the double-walled tube.

[0067] In this embodiment, the abutment 24 is made of elastic material. In actual application, the abutment 24 abuts against the inner wall of the outer tube 120 in a compressed state. Due to the influence of factors such as the material of the outer tube 120 and the inner tube 110 and the medium temperature, the thermal expansion and contraction properties of the outer tube 120 and the inner tube 110 are different, which leads to relative movement between the outer tube 120 and the inner tube 110. At this time, a part of the abutment 24 can continue to be compressed and a part of the abutment 24 can rebound, or all the abutment 24 rebound, or all the abutment 24 continue to be compressed, so that the abutment 24 cooperates with the support seat 22 and the adjustment rod 21 to flexibly adapt to the relative movement between the outer tube 120 and the inner tube 110, and maintain stable support for the inner tube 110 and the outer tube 120.

[0068] In other embodiments, when the abutment 24 is omitted and the support seat 22 is directly abutted against the inner wall of the outer tube 120, the support seat 22 can be made of elastic material. In actual application, the support seat 22 abuts against the inner wall of the outer tube 120 in a compressed state, so as to flexibly adapt to the relative movement between the outer tube 120 and the inner tube 110, so as to maintain the stable support of the inner tube 110 and the outer tube 120 by the support frame.

[0069] refer to Figure 1 In this embodiment, the end of the abutment 24 away from the support seat 22 can be an arc surface that matches the inner wall of the outer tube 120, so as to increase the area of ​​the abutment 24 that is in contact with and abuts the inner wall of the outer tube 120, and even make the end of the abutment 24 away from the support seat 22 completely fit and abut the inner wall of the outer tube 120, thereby allowing the support assembly 2 to be more stably supported between the clamp 1 and the outer tube 120.

[0070] In other embodiments, the elasticity of the abutment 24 can also be used to make the abutment 24 elastically deform and compress during the installation process of abutting the abutment 24 against the inner wall of the outer tube 120, so that the end of the compressed abutment 24 away from the support seat 22 can flexibly adapt to the shape of the inner wall of the outer tube 120, thereby increasing the area where the abutment 24 is in contact with the inner wall of the outer tube 120, and even making the end of the abutment 24 away from the support seat 22 completely in contact with the inner wall of the outer tube 120.

[0071] refer to Figure 2In other embodiments, when the abutment 24 is omitted and the support seat 22 is directly abutted against the inner wall of the outer tube 120, the end of the support seat 22 away from the adjusting rod 21 can also be set as an arc surface matching the inner wall of the outer tube 120, or, with the help of the elasticity of the support seat 22, the support seat 22 can be elastically deformed and compressed, and the end of the compressed support seat 22 away from the adjusting rod 21 can flexibly adapt to the shape of the inner wall of the outer tube 120, so as to increase the area of ​​the support seat 22 that is in contact with and abuts against the inner wall of the outer tube 120, and even the end of the support seat 22 away from the adjusting rod 21 can completely fit and abut against the inner wall of the outer tube 120, so that the support assembly 2 can be more stably supported between the clamp 1 and the outer tube 120.

[0072] refer to Figure 1 In this embodiment, the support frame also includes an isolating member 4, which is arranged on the inner side of the clamp 1. When the clamp 1 is arranged around the outer periphery of the inner tube 110, the isolating member 4 can fit with the outer periphery of the inner tube 110 and be isolated between the clamp 1 and the inner tube 110, so as to prevent static electricity from being generated due to relative movement between the inner tube 110 and the support frame caused by transportation or other reasons. In addition, the isolating member 4 can also play a buffering role.

[0073] In this embodiment, the spacer 4 is made of antistatic material to prevent static electricity from being generated by relative friction between the spacer 4 and the outer wall of the inner tube 110 when there is relative movement between the outer tube 120 and the inner tube 110, thereby ensuring the safety performance of the double-walled tube.

[0074] In this embodiment, the spacer 4 is made of elastic material, so that the spacer 4 has elasticity. In actual application, the spacer 4 is in a compressed state and abuts against the inner wall of the inner tube 110. In the actual application of the double-walled tube, the spacer 4 can cooperate with the support seat 22 to flexibly adapt to the relative movement between the outer tube 120 and the inner tube 110, and maintain the stable support of the support frame to the inner tube 110 and the outer tube 120.

[0075] In this embodiment, there are multiple isolators 4, which are circumferentially spaced and distributed on the inner side of the clamp 1. For example, multiple isolators 4 and multiple clamps 11 can be arranged one by one, or two or more isolators 4 can be arranged on the inner side of a clamp 11.

[0076] In other embodiments, the number of the isolating member 4 is one, and in this case, the isolating member 4 may be ring-shaped.

[0077] It can be seen from the above technical solution that the utility model has at least the following advantages and positive effects:

[0078] In the present application, the support seat is movably connected to the end of the adjustment rod away from the clamp, and the support seat is used to abut against the inner wall of the outer tube. The support seat can move along the adjustment rod to get closer to or away from the clamp to adjust the position of the support seat relative to the adjustment rod, and then adjust the length of the support assembly to adapt to the support installation of inner tubes and outer tubes with different spacings, so that each support seat can achieve an ideal support effect, and the versatility is high.

[0079] Although the utility model has been described with reference to several typical embodiments, it should be understood that the terms used are illustrative and exemplary, rather than restrictive. Since the utility model can be implemented in a variety of forms without departing from the spirit or essence of the utility model, it should be understood that the above-mentioned embodiments are not limited to any of the aforementioned details, but should be widely interpreted within the spirit and scope defined by the attached claims, so all changes and modifications falling within the scope of the claims or their equivalents should be covered by the attached claims.

Claims

1. A support frame for supporting a double-walled pipe, wherein the double-walled pipe comprises an inner pipe and an outer pipe spaced apart from each other, characterized in that: The support frame comprises: A hoop, which is used to be arranged around the outer circumference of the inner tube; A plurality of support components are arranged at intervals along the circumferential direction on the outer circumference of the clamp; the support component comprises an adjusting rod and a support seat, the adjusting rod is fixedly connected to the clamp, the support seat is movably connected to an end of the adjusting rod away from the clamp, and the support seat is used to abut against the inner wall of the outer tube; Wherein, the support seat can move along the adjusting rod to be closer to or farther away from the clamp, so as to adjust the length of the supporting assembly.

2. The support frame according to claim 1, characterized in that: The adjusting rod and the supporting seat are movably connected via screw connection.

3. The support frame according to claim 2, characterized in that: The outer circumference of the adjusting rod is provided with an external thread; The support seat is provided with a receiving groove with an opening facing the clamp, and an adjusting nut is fixed to the end of the support seat facing the clamp. The adjusting nut is provided with an internal thread matching the external thread, and the external thread is threadedly connected with the internal thread to realize a movable connection between the adjusting nut and the adjusting rod.

4. The support frame according to claim 2, characterized in that: The outer circumference of the adjusting rod is provided with an external thread; The support seat is provided with a connecting groove, the opening of which faces the clamp, the inner wall of the connecting groove is provided with an internal thread matching the external thread, and the external thread is screwed with the internal thread to achieve a movable connection between the support seat and the adjusting rod.

5. The support frame according to claim 1, characterized in that: The support assembly further includes an abutment member, which is disposed at one end of the support seat away from the adjustment rod and is used to abut against the inner wall of the outer tube; The abutting piece is made of antistatic material.

6. The support frame according to claim 1, characterized in that: The clamp comprises a plurality of clamps, which are connected end to end; the clamps are arc-shaped, and the central angles of the clamps are consistent.

7. The support frame according to claim 6, characterized in that: A plurality of the hoop clamps are detachably connected to each other; The clamp comprises a main body and connecting parts arranged at both ends of the main body, the main body is arc-shaped, the main body is used to be arranged around the outer circumference of the inner tube, and the main body is connected to the adjusting rod; The connecting portion protrudes outwardly from the main body portion in the radial direction, and the connecting portions of two adjacent clamps are abutted against and connected and fixed.

8. The support frame according to claim 7, characterized in that: Each of the connecting parts is provided with a connecting hole, and a fastener is passed through the connecting holes on the connecting parts of two adjacent clamps to achieve connection and fixation of the two adjacent clamps.

9. The support frame according to claim 1, characterized in that: The support frame also includes an isolating member for anti-static use, and the isolating member is arranged on the inner side of the clamp.

10. The support frame according to claim 9, characterized in that: There are multiple isolating members, and the multiple isolating members are distributed on the inner side of the clamp at intervals along the circumferential direction.

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