Clamp and forming method thereof

Abstract

The invention discloses a hoop and a forming method thereof, the hoop comprises a hoop belt with an elastic part, a first mounting part and a second mounting part, the first mounting part and the second mounting part are detachably connected through a connecting piece, and the elastic part, the first mounting part and the second mounting part are integrally formed by paving continuous long fibers and resin materials; the thickness of the large deformation area of the elastic part is smaller than that of the small deformation area and / or the large deformation area is provided with an annular groove. The invention provides a high-performance light-weight long-fiber clamp which is used for fixing aviation cables and pipelines, the clamp can independently adopt a strap and can also be used in cooperation with a rubber pad, the strap adopts a long-fiber composite material strap to replace a metal clamp strap, the product weight is reduced, the size is reduced, and the structural strength is guaranteed; by adopting the modes of reducing structural design, combination of continuous long fibers and resin materials and the like, the toughness of the strap is improved, the deformation elastic force is reduced, the hoop can be manually opened, and the problems of brittle failure and the like of the carbon fiber strap are avoided.

Description

Technical Field

[0001] The invention relates to the technical field of aviation cable fixing devices, in particular to a clamp and a forming method thereof. Background Art

[0002] Clamp products are widely used in the laying of aviation cables and pipelines. As new aviation equipment has more stringent requirements on weight, cost, reliability, etc., the existing metal clamps and PEEK clamps can no longer fully meet the new requirements of aviation equipment.

[0003] Currently, metal band rubber pad clamps that meet AS21919 and other standards are commonly used. The clamps are composed of a metal band and a rubber pad. The metal band is made of metal materials such as stainless steel or aluminum alloy, and the rubber pad is fixed to the band by mechanical installation. In long-term applications, this traditional metal band rubber pad clamp has the problems of heavy weight and poor corrosion resistance. Especially after the rubber pad falls off and ages, the metal band will wear the cable, and there is a risk of arc breakdown, which brings great trouble to users.

[0004] With the development of high-performance engineering plastics, engineers have used special engineering plastics such as PEEK (polyetheretherketone) to replace metal hoops and developed a new generation of PEEK clamps. This type of clamp product improves the corrosion resistance of the clamp, has good insulation performance, and can better adapt to the installation and protection of cables. However, in terms of cost, volume and weight reduction, PEEK clamps do not bring obvious advantages to users and still cannot completely replace traditional metal band rubber pad clamps.

[0005] In recent years, with the engineering application and development of high-specific-strength carbon fiber materials, lightweight and high-strength clamps have become possible. However, carbon fiber materials have the characteristics of high cost, high strength, and high modulus. They have large elastic force during elastic deformation and are easy to break. They cannot be opened and closed manually, and cannot meet the low-cost and high-toughness requirements of clamp products, which limits the application of carbon fiber materials in clamp products.

[0006] In summary, there is an urgent need for a high-performance clamp product that is high-strength, low-cost, corrosion-resistant, lightweight, and small in size to improve the overall performance of the equipment.

[0007] It should be particularly noted that the above-mentioned technical information is also a reflection of part of the creative work of the inventor in the research and development process, such as the discovery and proposal of technical problems, the direction and route of research and development design, etc. Placing it in the background technology part is intended to deepen the understanding of the overall background technology of the present invention, and should not be regarded as an admission or any form of implication that the above-mentioned technical information constitutes prior art already known to those skilled in the art. Summary of the invention

[0008] In view of the deficiencies in the above-mentioned background technology, the present invention proposes a clamp and a forming method thereof, which solves the technical problem that the existing clamps used for laying aviation cables and pipelines cannot take into account low cost, high strength, corrosion resistance, miniaturization and light weight.

[0009] The technical solution of this application is: A clamp comprises a clamp having an elastic portion, a first mounting portion and a second mounting portion, wherein the first mounting portion and the second mounting portion are detachably connected via a connecting piece, and the elastic portion, the first mounting portion and the second mounting portion are integrally formed by paving continuous long fibers and a resin material; the thickness of a large deformation zone of the elastic portion is smaller than that of a small deformation zone and / or an annular groove is provided in the large deformation zone.

[0010] This technical solution proposes a high-performance lightweight long fiber clamp for fixing aviation cables and pipelines. The clamp can be used alone or in combination with a rubber pad. The clamp adopts a variable thickness structure design method and is formed by a long fiber material through a new preparation method. It takes into account the good toughness and strength of continuous long fibers, and can ensure that the cable enters the clamp smoothly, and can play a role in supporting and fixing the cable. The use of long fiber composite material bands to replace metal clamp bands reduces product weight, reduces volume, and ensures structural strength. The use of variable diameter structure design and the combination of continuous long fibers and resin materials improves the toughness of the band, reduces deformation elasticity, ensures that the clamp can be opened manually, and avoids problems such as brittle fracture of carbon fiber bands due to high force. That is, the hoop innovatively adopts high-performance continuous long fibers, and innovative designs are made in the hoop structure, long fiber molding method, etc., taking into account the structural strength and toughness of the long fiber clamp, reducing product cost and weight, reducing the volume of the clamp, and enhancing corrosion resistance. The structure can completely replace the traditional metal clamp, better meet the future development direction of aviation equipment, and has broad market application value.

[0011] On the basis of the above technical solution, as a preferred technical solution, the continuous long fiber is at least one of carbon fiber, glass fiber, and aramid fiber.

[0012] On the basis of the above technical solution, as a preferred technical solution, the first mounting portion extends in a straight line along one end of the elastic portion, and the second mounting portion and the other end of the elastic portion extend in a bent shape through an arc transition zone, and the arc transition zone is a thickened and reinforced zone.

[0013] On the basis of the above technical solution, as a preferred technical solution, in an initial state, the first mounting portion and the second mounting portion are separated from each other and are in an angle shape with the opening facing outward.

[0014] On the basis of the above technical solution, as a preferred technical solution, the thickness of the first mounting portion and the thickness of the second mounting portion are both greater than the thickness of the large deformation zone.

[0015] On the basis of the above technical solution, as a preferred technical solution, when in use, the second mounting part is moved away from the first mounting part to form an open state, and after the fixed part enters the elastic part, the second mounting part returns to its initial state, and the second mounting part and the first mounting part are attached to each other and formed into a locked state through the connecting part.

[0016] On the basis of the above technical solution, as a preferred technical solution, the second mounting portion and the first mounting portion are provided with corresponding mounting holes, and the connecting member is a screw or a bolt.

[0017] On the basis of the above technical solution, as a preferred technical solution, it also includes a rubber pad, which includes a middle zone that fits with the inner wall of the elastic part, a first zone that fits with the inner wall of the first mounting part, and a second zone that fits with the inner wall of the arc transition zone. In the locked state, the outer end surface of the second zone is crimped with the inner surface of the first zone.

[0018] A clamp forming method, using continuous long fibers and resin materials to lay on a mold to form a clamp blank of the clamp described in any of the above technical solutions, the clamp blank is an open cylindrical shape, and the clamp blank is cut and processed into the clamp strips of different widths through a post-process.

[0019] Based on the above technical solution, as a preferred technical solution, the hoop is connected to a separate rubber pad by cold bonding, or the hoop is integrally formed with the rubber pad by hot vulcanization bonding, or the cross-section of the rubber pad is set to an inward-turned snap-on shape to be sleeved with the hoop.

[0020] Compared with the prior art, the beneficial effects of the present invention include: In this technical solution, a high-performance lightweight long fiber clamp is proposed. The clamp innovatively adopts high-performance continuous fiber, and innovative designs are made in the clamp structure, long fiber molding method, rubber pad molding, etc., taking into account the structural strength and toughness of the long fiber clamp, reducing the product cost and weight, reducing the volume of the clamp, and structurally being able to completely replace the traditional metal clamp, better meeting the future development direction of equipment, and having broad market application value.

[0021] 1. Application of new materials: The hoop is made of long fiber composite material. The fiber can be carbon fiber, glass fiber or aramid fiber material. For clamps of different sizes, the fiber can be one layer or multiple layers. The fiber can be one type or a combination of several fiber materials. The fiber is laid with a resin with good toughness to improve strength and reduce weight.

[0022] 2. Application of new structure: The cross-sectional area of ​​the hoop changes locally. Thin-wall treatment is performed in the area with large deformation to increase the deformation of the hoop. The elastic force of the clamp can also be reduced by increasing the structure of the ring groove hole. The wall thickness is increased at the support installation to improve the structural strength of the support part.

[0023] 3. The rubber pad of the clamp is bonded to the clamp band by an integrated vulcanization molding method, which can reduce the volume of the clamp and reduce the weight of the clamp.

[0024] 4. Application of new technology: The hoop is formed into an open cylindrical shape by paving resin and fiber, and is cut and processed in the later process. The thickness of the part can be adjusted, which can improve production efficiency and reduce product cost.

[0025] 5. The clamp has a P-shaped opening structure with two upper and lower mounting surfaces. The upper mounting surface and the lower mounting surface have an upward angle, which can guide the installation of the cable.

[0026] 6. The outer surface of the clamp is smooth to ensure the appearance of the parts; the inner surface of the clamp is roughened and can be frosted or brushed to improve the bonding strength of the rubber pad.

[0027] 7. An annular weight-reducing groove can be designed in the middle of the clamp to further reduce the weight of the clamp.

[0028] 8. The clamp can be used in two forms, one is a single-use clamp, and the other is a clamp with a rubber pad. When the wire harness protection requirements are higher, the clamp with a rubber pad can be used.

[0029] 9. The rubber pad of the clamp is installed together with the clamp belt by bonding or mechanical installation.

[0030] 10. By changing the diameter of the clamp, clamps of various specifications can be produced to meet the installation and fixation of cables / conduits of different diameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0032] Figure 1 A schematic diagram of the structure of a clamp with a rubber pad provided by the present invention; Figure 2 for Figure 1 A front view of Figure 3 for Figure 1 The rubber pad in the Figure 4 for Figure 3 Schematic diagram of the state after the rubber pad is bonded to the hoop; Figure 5 For another rubber pad; Figure 6 for Figure 5 A schematic diagram of the state in which the rubber pad is sleeved onto the hoop; Figure 7 Schematic diagram of the opening process of the hoop; Figure 8 It is a structural schematic diagram of a hoop blank; Fig. 9 for Figure 8 The schematic diagram of the structure of the hoop blank after cutting; Fig.10 is a schematic diagram of the structure of another type of hoop; Description of Figure Numbers: Clamp blank 111; Hoop 1: Elastic part 1-0, large deformation area 1-0-1, small deformation area 1-0-2, annular groove 1-0-3; A first mounting portion 1-1, a second mounting portion 1-2, an arc transition area 1-2-1, and a mounting hole 1-3; Rubber pad 2: The middle zone is 2-0, the first zone is 2-1, and the second zone is 2-2. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the core concept of the present invention and the following embodiments, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] The present application provides these embodiments to make the present application thorough and complete, and to fully express the scope of the present application to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the parts and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary, and not as limiting.

[0035] It should be noted that, in the description of this application, unless otherwise specified, the meaning of "several" is greater than or equal to two; the terms "upper", "lower", "left", "right", "inner", "outer", "axial", "radial" and the like indicate positions or positional relationships only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on this application. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0036] In addition, the words "first", "second" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different parts. "Vertical" does not mean vertical in the strict sense, but is within the tolerance range. "Parallel" does not mean parallel in the strict sense, but is within the tolerance range. "Include" or "comprising" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements.

[0037] It should also be noted that in the description of this application, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 it can be indirectly connected through an intermediate medium, or it can be internal communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances. When a specific device is described as being located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device.

[0038] All terms used in this application have the same meaning as those understood by those of ordinary skill in the art to which this application belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, such as general dictionaries, should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined herein.

[0039] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the corresponding technologies, methods, and equipment should be considered part of the specification.

[0040] The specific embodiments are as follows: A clamp, such as Figures 1 to 4 and Fig.10As shown, a band 1 includes an elastic portion 1-0, a first mounting portion 1-1, and a second mounting portion 1-2. The first mounting portion 1-1 and the second mounting portion 1-2 are detachably connected via a connecting piece. The elastic portion 1-0 is an arc-shaped structure. Compared with other portions, the middle portion thereof is a large deformation zone 1-0-1. The deformation amount of the large deformation zone 1-0-1 is the largest during the opening and closing of the band 1. The first mounting portion 1-1 and the second mounting portion 1-2 are used to control the opening and closing of the elastic portion 1-0. When the first mounting portion 1-1 and the second mounting portion 1-2 are away from each other, the fixed part can enter and exit the elastic portion 1-0. When the first mounting portion 1-1 and the second mounting portion 1-2 are fitted and locked with each other via the connecting piece, the fixed part is locked in the elastic portion 1-0.

[0041] The elastic part 1-0, the first mounting part 1-1 and the second mounting part 1-2 are integrally formed by paving continuous long fibers and resin materials, that is, the elastic part 1-0, the first mounting part 1-1 and the second mounting part 1-2 are an integrally formed structure, and are formed by paving continuous long fibers and resin materials, and their thickness can be adjusted according to the number and position of the layers of the continuous long fibers.

[0042] The thickness of the large deformation zone 1-0-1 of the elastic part 1-0 is less than the thickness of the small deformation zone 1-0-2 and / or the large deformation zone 1-0-1 is provided with an annular groove 1-0-3, that is, three optional implementation methods are given. The first is to perform thin-wall treatment only in the large deformation zone 1-0-1 of the elastic part 1-0, so that the wall thickness of the large deformation zone 1-0-1 is minimized, thereby increasing its toughness, reducing weight, reducing volume, and ensuring strength at the same time. The second is to open an annular groove 1-0-3 in the large deformation zone 1-0-1 of the elastic part 1-0, and the toughness is increased by the annular groove 1-0-3, and at the same time, it has a weight reduction effect. The length direction of the annular groove 1-0-3 is arranged along the bending direction of the elastic part 1-0. The third is to simultaneously adopt the thin-wall treatment and the arrangement of the annular groove 1-0-3, which has a mutual coupling effect.

[0043] That is, to ensure good elasticity and strength of the hoop 1, the cross-sectional wall thickness of the hoop 1 is locally varied. Two solutions can be adopted: Solution 1 is to perform thin-wall treatment in the area with large deformation; Solution 2 is to design an annular groove in the area with large deformation; Solution 3 is a combination of Solution 1 and Solution 2; all three solutions can increase the deformation of the hoop and reduce the elastic force of the clamp.

[0044] In the embodiment, a high-performance lightweight long fiber clamp is proposed for fixing aviation cables and pipelines. The clamp can be used alone or in combination with a rubber pad. The clamp adopts a variable thickness structure design method, and the long fiber material is formed by a new preparation method, taking into account the good toughness and strength of the continuous long fiber, which can ensure that the cable enters the clamp smoothly and can play a role in supporting and fixing the cable. The long fiber composite material clamp is used to replace the metal clamp, which reduces the product weight, reduces the volume, and ensures the structural strength. The variable diameter structure design, the combination of continuous long fiber and resin material, etc. improve the toughness of the clamp, reduce the deformation elastic force, ensure that the clamp can be opened manually, and avoid the problem of brittle fracture of the carbon fiber clamp due to large force. That is, the clamp innovatively adopts high-performance continuous long fiber, and innovative designs are made in the aspects of the clamp structure and the long fiber forming method, taking into account the structural strength and toughness of the long fiber clamp, reducing the product cost and weight, reducing the volume of the clamp, and enhancing the corrosion resistance. The structure can completely replace the traditional metal clamp, better meet the future development direction of aviation equipment, and has a wide market application value.

[0045] On the basis of the above embodiments, as a preferred embodiment, the continuous long fiber is at least one of carbon fiber, glass fiber, and aramid fiber, that is, the continuous long fiber has a variety of options, and can be one of carbon fiber, glass fiber, and aramid fiber, or two of carbon fiber, glass fiber, and aramid fiber, or carbon fiber, glass fiber, and aramid fiber can be used at the same time.

[0046] Based on the above embodiments, as a preferred embodiment, Figure 7 As shown, the first mounting portion 1-1 extends in a straight line along one end of the elastic portion 1-0, and the first mounting portion 1-1 is always in a state of minimum deformation. The second mounting portion 1-2 and the other end of the elastic portion 1-0 extend in a bent shape through an arc transition zone 1-2-1, and the arc transition zone 1-2-1 is a thickened and reinforced zone. The opening and closing of the elastic portion 1-0 is achieved by changing the position of the second mounting portion 1-2, which is closed when it is close to the first mounting portion 1-1 and opened when it is away from the first mounting portion 1-1. Therefore, the arc transition zone 1-2-1 is a thickened and reinforced zone, which can effectively improve the support strength.

[0047] Based on the above embodiment, as a preferred embodiment, in the initial state, the first mounting portion 1-1 and the second mounting portion 1-2 are separated from each other and are in an angled shape with the opening facing outward. That is, the initial state of the band 1 is a P-shaped opening structure, with upper and lower mounting surfaces formed by the first mounting portion 1-1 and the second mounting portion 1-2, and the upper mounting surface and the lower mounting surface have an angle, which can guide the installation of the cable. Preferably, in the initial state, the distance between the first mounting portion 1-1 and the second mounting portion 1-2 is smaller than the radius of the elastic portion 1-0.

[0048] On the basis of the above embodiments, as a preferred embodiment, the thickness of the first mounting part 1-1 and the thickness of the second mounting part 1-2 are both greater than the thickness of the large deformation zone 1-0-1, which can effectively improve the fastening strength without affecting the toughness of the clamp.

[0049] On the basis of the above embodiments, as a preferred embodiment, when in use, the second mounting part 1-2 is moved away from the first mounting part 1-1 to form an open state, and after the fixed part enters the elastic part 1-0, the second mounting part 1-2 returns to its initial state, and the second mounting part 1-2 and the first mounting part 1-1 are attached to each other and formed into a locked state through the connecting part.

[0050] On the basis of the above embodiments, as a preferred embodiment, the second mounting part 1-2 and the first mounting part 1-1 are provided with corresponding mounting holes 1-3, and the connecting member is a screw or a bolt, which passes through the upper and lower mounting holes 1-3 of the clamp 1 to achieve the clamping and fixing of the cable or pipe.

[0051] On the basis of the above embodiments, as a preferred embodiment, it also includes a rubber pad 2, and the rubber pad 2 includes a middle area 2-0 that fits with the inner wall of the elastic part 1-0, a first area 2-1 that fits with the inner wall of the first mounting part 1-1, and a second area 2-2 that fits with the inner wall of the arc transition area 1-2-1. In the locked state, the outer end surface of the second area 2-2 is crimped to the inner surface of the first area 2-1.

[0052] A clamp forming method, such as Figure 8 and Fig. 9 As shown, a clamp blank 111 of the clamp described in any of the above embodiments is formed on a mold by using continuous long fibers and resin materials. The clamp blank 111 is an open cylindrical shape, and the clamp blank 111 is cut into the clamp bands 1 of different widths through a subsequent process.

[0053] The material of the hoop 1 is a long fiber composite material, which is formed by paving continuous long fibers and matching resin materials. The fiber material can be at least one of carbon fiber, glass fiber, and aramid fiber. For different specifications of the clamp, the continuous long fiber can be one or more layers. For the same specification of the clamp, by changing the number of continuous long fiber layers in different areas, the thickness of the hoop in the thin-walled area and the thickened area can be changed, and the resin material has good toughness.

[0054] The band 1 is formed into an open cylindrical shape by paving resin and fiber through a mold, and is cut and processed in a later process. The width of the band is adjustable, so that the production efficiency can be improved and the product cost can be reduced.

[0055] Based on the above embodiments, as a preferred embodiment, the band 1 is connected to the separate rubber pad 2 by cold bonding, or the band 1 is integrally formed with the rubber pad 2 by hot vulcanization bonding, or Figure 5 As shown, the cross section of the rubber pad 2 is set in an inward buckle shape to be sleeved with the hoop 1.

[0056] The rubber pad 2 is installed together with the band 1 by bonding or mechanical installation.

[0057] The bonding fixation includes two methods: cold bonding and hot vulcanization bonding. Cold bonding is to form the rubber pad 2 separately as an independent part, and to bond the hoop 1 and the rubber pad 2 together with an adhesive. Hot vulcanization bonding is to use the hoop 1 as an insert, and to use an integrated molding technology in a mold to integrally mold the rubber pad 2 and the hoop 1.

[0058] like Figure 5 and Figure 6 As shown, the mechanical fixing method is to design the rubber pad 2 into an open circular cross section and put it on the clamp band 1. According to different application environments, the rubber pad material can be replaced, such as silicone rubber, fluorosilicone rubber, nitrile rubber pad, EPDM rubber, etc.

[0059] The details not described in detail in the present invention are all conventional technical means known to those skilled in the art.

[0060] The above content shows and describes the basic principles, main features and beneficial effects of the present invention. The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A clamp, comprising a clamp band (1) having an elastic portion (1-0), a first mounting portion (1-1) and a second mounting portion (1-2), wherein the first mounting portion (1-1) and the second mounting portion (1-2) are detachably connected via a connecting piece, characterized in that: The elastic part (1-0), the first mounting part (1-1) and the second mounting part (1-2) are integrally formed by paving continuous long fibers with a resin material; the thickness of the large deformation zone (1-0-1) of the elastic part (1-0) is smaller than the thickness of the small deformation zone (1-0-2) and / or the large deformation zone (1-0-1) is provided with an annular groove (1-0-3).

2. The clamp according to claim 1, characterized in that: The continuous long fiber is at least one of carbon fiber, glass fiber and aramid fiber.

3. The clamp according to claim 1 or 2, characterized in that: The first mounting portion (1-1) extends in a straight line along one end of the elastic portion (1-0), and the second mounting portion (1-2) and the other end of the elastic portion (1-0) extend in a bent shape through an arc transition zone (1-2-1), wherein the arc transition zone (1-2-1) is a thickened and reinforced zone.

4. The clamp according to claim 3, characterized in that: In an initial state, the first mounting portion (1-1) and the second mounting portion (1-2) are separated from each other and are in an angle shape with the opening facing outwards.

5. The clamp according to claim 4, characterized in that: The thickness of the first mounting portion (1-1) and the thickness of the second mounting portion (1-2) are both greater than the thickness of the large deformation zone (1-0-1).

6. The clamp according to any one of claims 1, 2, 4 and 5, characterized in that: When in use, the second mounting portion (1-2) is moved away from the first mounting portion (1-1) to form an open state, and after the fixed member enters the elastic portion (1-0), the second mounting portion (1-2) returns to an initial state, and the second mounting portion (1-2) and the first mounting portion (1-1) are abutted against each other through the connecting member to form a locked state.

7. The clamp according to claim 6, characterized in that: The second mounting portion (1-2) and the first mounting portion (1-1) are provided with mounting holes (1-3) corresponding to each other, and the connecting member is a screw or a bolt.

8. The clamp according to any one of claims 4, 5 and 7, characterized in that: The rubber pad (2) further comprises a middle area (2-0) in contact with the inner wall of the elastic portion (1-0), a first area (2-1) in contact with the inner wall of the first mounting portion (1-1), and a second area (2-2) in contact with the inner wall of the arc transition area (1-2-1); in a locked state, an outer end surface of the second area (2-2) is pressed against an inner surface of the first area (2-1).

9. A clamp forming method, characterized in that: A clamp blank (111) of the clamp according to any one of claims 1 to 8 is formed by laying continuous long fibers and resin materials on a mold, wherein the clamp blank (111) is an open cylindrical shape, and the clamp blank (111) is cut into the clamp bands (1) of different widths through a post-process.

10. The clamp forming method according to claim 9, characterized in that: The hoop (1) is connected to a separate rubber pad (2) by cold bonding, or the hoop (1) is integrally formed with the rubber pad (2) by hot vulcanization bonding, or the cross section of the rubber pad (2) is arranged in an inwardly turned buckle shape to be sleeved with the hoop (1).

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