Quick-release clamp

Abstract

The utility model provides a quick release hoop which comprises a first semi-arc C-shaped clamp and a second semi-arc C-shaped clamp, one end of the first C-shaped clamp is hinged to one end of the second C-shaped clamp, a first extension portion is arranged at the end, away from the hinged end, of the first C-shaped clamp, and a second extension portion is arranged at the end, away from the hinged end, of the second C-shaped clamp. A buckling virtual plane of the first C-shaped clamp and the second C-shaped clamp is parallel to the first extension part and the second extension part and is positioned between the first extension part and the second extension part; buckling grooves are formed in the surfaces, facing the buckling virtual plane, of the first C-shaped clamp and the first extension part and the surfaces, facing the buckling virtual plane, of the second C-shaped clamp and the second extension part; the sections of the buckling grooves are trapezoidal, and the long sides of the buckling grooves are close to the buckling virtual plane; the first C-shaped clamp and the first extension part are formed by integrally stamping a metal plate, and the second C-shaped clamp and the second extension part are formed by integrally stamping a metal plate. The utility model has the advantages of simple structure, light weight and low production cost.

Description

Technical Field

[0001] The utility model relates to the field of pipeline connectors, in particular to a quick-release clamp. Background Art

[0002] A clamp (pipe clamp) is a connection device used to connect pipes, valves and pipeline accessories, and is used to tighten the connection between adjacent joints.

[0003] At present, the connection methods of clamps (pipe clamps) include bolt fastening type and buckle type, etc., and the clamps are generally double-piece, and the general double-piece clamps are often cast from zinc alloy or aluminum alloy. Although they can effectively ensure the overall strength, they greatly increase the production cost and their own weight. At the same time, since the clamps cast from zinc alloy or aluminum alloy have strong overall rigidity, they lack elastic deformation margin, and are easy to produce point contact with the joints of adjacent joints during tightening. The axial force consistency at various positions in the circumferential direction of the joint is poor, resulting in local stress concentration and deformation of the joint. Utility Model Content

[0004] Based on the above problems, the utility model aims to provide a quick-release clamp which is easy to install, has good adaptability, is simple in structure, light in weight and has low production cost.

[0005] In view of the above problems, the following technical solutions are provided: a quick-release clamp comprises a semi-arc first C-shaped clamp and a second C-shaped clamp, one end of the first C-shaped clamp is hinged to one end of the second C-shaped clamp, the end of the first C-shaped clamp away from the hinged end is provided with a first extension, the end of the second C-shaped clamp away from the hinged end is provided with a second extension, the buckling virtual plane of the first C-shaped clamp and the second C-shaped clamp is parallel to the first extension and the second extension and is located between the two; the first C-shaped clamp and the first extension face the buckling virtual plane, and the second C-shaped clamp and the second extension face the buckling virtual plane A buckling groove is provided on one side of the first extension part, the cross-section of the buckling groove is trapezoidal and one side of the long side is close to the buckling virtual plane; the first C-shaped clip and the first extension part are integrally stamped by a metal plate to form a buckling groove, and the second C-shaped clip and the second extension part are integrally stamped by a metal plate to form a buckling groove; the first extension part is provided with a quick-release slot opened along its length direction starting from its end, and a quick-release bolt is hinged in the buckling slot of the second extension part, and the quick-release bolt is clamped in the quick-release slot and the first C-shaped clip and the second C-shaped clip are clamped by the quick-release nut and the quick-release bolt thread cooperation.

[0006] In the above structure, the first C-shaped clamp is hinged with the second C-shaped clamp, and the quick-release bolt reaches the quick-release groove by swinging. When the quick-release nut is tightened, the first extension part is squeezed and pushed toward the second extension part, so that the buckling groove of the first C-shaped clamp and the buckling groove of the second C-shaped clamp buckle the joint of the adjacent pipe and bring the two close to each other to achieve connection and sealing; the first C-shaped clamp and the first extension part, the second C-shaped clamp and the second extension part are all stamped by metal plates, which are light in weight and low in production cost. At the same time, they have a certain amount of elastic deformation. When the joint is clamped, they can be adaptively contacted by force deformation, so that the buckling grooves of the first C-shaped clamp and the second C-shaped clamp and the joint can produce a line contact or surface contact adaptation effect, and the contact extrusion stress is more uniform.

[0007] The utility model is further configured that the buckling groove includes a groove bottom wall and groove side walls located on both sides of the groove bottom wall.

[0008] In the above structure, the groove side walls on both sides of the groove bottom wall are arranged in a V shape, so that when the first C-shaped clamp and the second C-shaped clamp are brought close together, the inclined surface of the groove side wall can provide axial extrusion force for the joint.

[0009] The utility model is further configured such that a hinged ear is provided at one end of the quick-release bolt, and the hinged ear is hinged to the groove side walls on both sides of the snap-fit ​​groove of the second extension portion through a first hinged pin, and the central axis of the first hinged pin is parallel to the arc axis of the first C-shaped clamp and the second C-shaped clamp.

[0010] In the above structure, the hinge ear is hinged to the first hinge pin, so that the quick-release bolt can swing and snap into the engagement groove. At the same time, when the first C-shaped clamp and the second C-shaped clamp are brought close to each other, they can adapt to the swing of the first extension.

[0011] The utility model is further configured such that the end of the first C-shaped clamp facing away from the first outer extension is provided with a first hinged cylinder formed by integrally stamping and rolling a metal plate, and the end of the second C-shaped clamp facing away from the second outer extension is provided with a second hinged cylinder formed by integrally stamping and rolling a metal plate, the first hinged cylinder and the second hinged cylinder are hingedly connected by a second hinge pin, and the center axis of the second hinge pin is parallel to the arc axis of the first C-shaped clamp and the second C-shaped clamp.

[0012] In the above structure, the first articulated tube and the second articulated tube are both integrally stamped and rolled, which can realize continuous mold production, greatly improving production efficiency while also ensuring connection strength.

[0013] The utility model is further configured such that the first hinged tube is connected to the bottom wall of the buckling groove on the first C-shaped clip; the second hinged tube is connected to the bottom wall of the buckling groove on the second C-shaped clip.

[0014] In the above structure, the force is more stable and the fracture of the connection is avoided.

[0015] The utility model is further configured such that the axial lengths of the first hinge tube and the second hinge tube are less than or equal to half of the width of the bottom wall of the buckling groove.

[0016] In the above structure, interference with the side wall of the snap-fitting groove can be avoided, and the blanking and material taking is more reasonable.

[0017] The utility model is further configured such that the quick-release nut is located on a side of the first extension portion that is away from the buckling groove.

[0018] In the above structure, the first extension portion is pushed close to the second extension portion by pushing.

[0019] The utility model is further configured that a gasket sleeved on the quick-release bolt is provided between the quick-release nut and a surface of the first extension portion facing away from the buckling groove.

[0020] In the above structure, the gasket can reduce the resistance when the quick-release nut is tightened, making disassembly and assembly easier.

[0021] The utility model is further configured such that a groove bottom wall of the buckling groove of the second extension portion is provided with a clearance groove, and the hinged ear is located in the clearance groove.

[0022] In the above structure, the clearance groove is used to make way for the hinged ear to avoid scratching between the hinged ear and the bottom wall of the buckle groove, so that the structure of the quick-release bolt and the second extension part is more compact.

[0023] The utility model is further configured that the quick-release nut is a butterfly nut.

[0024] In the above structure, the butterfly nut is easy to tighten and loosen, and is convenient for users to manually disassemble and assemble.

[0025] The beneficial effects of the utility model are as follows: the first C-clip and the second C-clip are hinged, the quick-release bolt reaches the quick-release notch by swinging, and when the quick-release nut is tightened, the first extension part is squeezed and pushed toward the second extension part, so that the buckling groove of the first C-clip and the buckling groove of the second C-clip buckle the joint of the adjacent pipe and make the two close to each other to achieve connection and sealing; the first C-clip and the first extension, the second C-clip and the second extension are all formed by stamping metal plates, which are light in weight and low in production cost, and at the same time, they have a certain amount of elastic deformation, and can perform adaptive contact by force deformation when clamping the joint, so that the buckling grooves of the first C-clip and the second C-clip and the joint can produce a line contact or surface contact adaptation effect, and the contact extrusion stress is more uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1It is a schematic diagram of the three-dimensional structure of the first state of the utility model.

[0027] Figure 2 It is a schematic diagram of the three-dimensional structure of the second state of the utility model.

[0028] Figure 3 It is a schematic diagram of the three-dimensional structure of the utility model in the third state.

[0029] Figure 4 It is a schematic diagram of the explosion three-dimensional structure of the utility model.

[0030] Meanings of the numbers in the figure: 10 - first C-shaped clip; 11 - first extension; 111 - quick-release slot; 12 - first hinge tube; 20 - second C-shaped clip; 21 - second extension; 211 - clearance slot; 22 - second hinge tube; 30 - snap-fit ​​slot; 31 - slot bottom wall; 32 - slot side wall; 40 - quick-release bolt; 401 - hinge ear; 41 - quick-release nut; 42 - first hinge pin; 43 - gasket; 50 - second hinge pin. DETAILED DESCRIPTION

[0031] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0032] refer to Figures 1 to 4 ,like Figures 1 to 4 A quick-release clamp is shown, comprising a semi-arc first C-shaped clamp 10 and a second C-shaped clamp 20, one end of the first C-shaped clamp 10 is hinged to one end of the second C-shaped clamp 20, the end of the first C-shaped clamp 10 away from the hinged end is provided with a first extension 11, and the end of the second C-shaped clamp 20 away from the hinged end is provided with a second extension 21, the buckling virtual plane of the first C-shaped clamp 10 and the second C-shaped clamp 20 is parallel to the first extension 11 and the second extension 21 and is located between the two; the first C-shaped clamp 10 and the first extension 11 facing the buckling virtual plane and the second C-shaped clamp 20 and the second extension 21 facing the buckling virtual plane are both provided with a buckling groove 30 The cross section of the buckling groove 30 is trapezoidal and one side of the long side is close to the buckling virtual plane; the first C-shaped clip 10 and the first extension part 11 are integrally stamped by a metal plate to form a buckling groove 30, and the second C-shaped clip 20 and the second extension part 21 are integrally stamped by a metal plate to form a buckling groove 30; the first extension part 11 is provided with a quick-release slot 111 opened along its length direction starting from its end, and a quick-release bolt 40 is hinged in the buckling groove 30 of the second extension part 21. The quick-release bolt 40 is stuck in the quick-release slot 111 and the first C-shaped clip 10 and the second C-shaped clip 20 are clamped by the quick-release nut 41 and the quick-release bolt 40 threadedly cooperate.

[0033] In the above structure, the first C-shaped clamp 10 is hinged with the second C-shaped clamp 20, and the quick-release bolt 40 reaches the quick-release notch 111 by swinging. When the quick-release nut 41 is tightened, the first extension part 11 is squeezed and pushed toward the second extension part 21, so that the buckling groove 30 of the first C-shaped clamp 10 and the buckling groove 30 of the second C-shaped clamp 20 buckle the joint of the adjacent pipe and make the two close to each other to achieve connection and sealing; the first C-shaped clamp 10 and the first extension part 11, the second C-shaped clamp 20 and the second extension part 21 are all stamped by metal plates, which are light in weight and low in production cost. At the same time, they have a certain amount of elastic deformation. When the joint is clamped, they can be adaptively contacted by force deformation, so that the buckling groove 30 of the first C-shaped clamp 10 and the second C-shaped clamp 20 and the joint can produce a line contact or surface contact adaptation effect, and the contact extrusion stress is more uniform.

[0034] In this embodiment, the locking groove 30 includes a groove bottom wall 31 and groove side walls 32 located on both sides of the groove bottom wall 31 .

[0035] In the above structure, the groove side walls 32 on both sides of the groove bottom wall 31 are arranged in a V shape, so that when the first C-shaped clamp 10 and the second C-shaped clamp 20 are brought together, the inclined surface of the groove side walls 32 can provide axial extrusion force for the joint.

[0036] In this embodiment, a hinged ear 401 is provided at one end of the quick-release bolt 40, and the hinged ear 401 is hinged to the groove side walls 32 on both sides of the locking groove 30 of the second extension portion 21 through a first hinge pin 42, and the central axis of the first hinge pin 42 is parallel to the arc axis of the first C-shaped clamp 10 and the second C-shaped clamp 20.

[0037] In the above structure, the hinge ear 401 is hinged to the first hinge pin 42, so that the quick-release bolt 40 can swing and snap into the engagement groove 30. At the same time, when the first C-shaped clip 10 and the second C-shaped clip 20 are brought close to each other, they can adapt to the swing of the first extension portion 11.

[0038] In this embodiment, the end of the first C-shaped clamp 10 facing away from the first extension portion 11 is provided with a first hinged tube 12 which is formed by integrally stamping and rolling a metal plate, and the end of the second C-shaped clamp 20 facing away from the second extension portion 21 is provided with a second hinged tube 22 which is formed by integrally stamping and rolling a metal plate. The first hinged tube 12 and the second hinged tube 22 are hingedly connected by a second hinge pin 50, and the central axis of the second hinge pin 50 is parallel to the arc axis of the first C-shaped clamp 10 and the second C-shaped clamp 20.

[0039] In the above structure, the first articulated tube 12 and the second articulated tube 22 are both integrally stamped and rolled, which can realize continuous mold production, greatly improving production efficiency while also ensuring connection strength.

[0040] In this embodiment, the first hinged tube 12 is connected to the bottom wall 31 of the buckling groove 30 on the first C-shaped clip 10 ; the second hinged tube 22 is connected to the bottom wall 31 of the buckling groove 30 on the second C-shaped clip 20 .

[0041] In the above structure, the force is more stable and the fracture of the connection is avoided.

[0042] In this embodiment, the axial lengths of the first hinge tube 12 and the second hinge tube 22 are less than or equal to half the width of the bottom wall 31 of the locking groove 30 .

[0043] In the above structure, interference with the groove side wall 32 of the buckling groove 30 can be avoided, and the blanking and material taking is more reasonable.

[0044] In this embodiment, the quick-release nut 41 is located on a side of the first extension portion 11 facing away from the buckling groove 30 .

[0045] In the above structure, the first extension portion 11 is pushed close to the second extension portion 21 by pushing.

[0046] In this embodiment, a washer 43 sleeved on the quick-release bolt 40 is further disposed between the quick-release nut 41 and a surface of the first extension portion 11 facing away from the buckling groove 30 .

[0047] In the above structure, the gasket 43 can reduce the resistance when the quick-release nut 41 is tightened, making disassembly and assembly easier.

[0048] In this embodiment, a groove bottom wall 31 of the buckling groove 30 of the second extension portion 21 is provided with a clearance groove 211 , and the hinge ear 401 is located in the clearance groove 211 .

[0049] In the above structure, the clearance groove 211 is used to make way for the hinge ear 401 to avoid scratching between the hinge ear 401 and the bottom wall 31 of the buckling groove 30, so that the structure of the quick-release bolt 40 and the second extension part 21 is more compact.

[0050] In this embodiment, the quick-release nut 41 is a butterfly nut.

[0051] In the above structure, the butterfly nut is easy to tighten and loosen, and is convenient for users to manually disassemble and assemble.

[0052] The beneficial effects of the utility model are as follows: the first C-shaped clamp 10 is hinged with the second C-shaped clamp 20, and the quick-release bolt 40 reaches the quick-release notch 111 by swinging. When the quick-release nut 41 is tightened, the first extension part 11 is squeezed and pushed toward the second extension part 21, so that the buckling groove 30 of the first C-shaped clamp 10 and the buckling groove 30 of the second C-shaped clamp 20 buckle the joint of the adjacent pipe and make the two close to each other to achieve connection and sealing; the first C-shaped clamp 10 and the first extension part 11, the second C-shaped clamp 20 and the second extension part 21 are all stamped by metal plates, which are light in weight and low in production cost. At the same time, they have a certain amount of elastic deformation. When the joint is clamped, they can be adaptively contacted by force deformation, so that the buckling groove 30 of the first C-shaped clamp 10 and the second C-shaped clamp 20 and the joint can produce a line contact or surface contact adaptation effect, and the contact extrusion stress is more uniform.

[0053] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications of the above assumptions should also be regarded as the protection scope of the present invention.

Claims

1. A quick-release clamp, comprising a semi-arc-shaped first C-shaped clamp and a second C-shaped clamp, wherein one end of the first C-shaped clamp is hinged to one end of the second C-shaped clamp, and characterized in that: The first C-shaped clamp is provided with a first extension at one end away from the hinged end, and the second C-shaped clamp is provided with a second extension at one end away from the hinged end. The virtual plane of the first C-shaped clamp and the second C-shaped clamp is parallel to the first extension and the second extension and is located between the two. The first C-shaped clamp and the first extension facing the virtual plane of the buckling and the second C-shaped clamp and the second extension facing the virtual plane of the buckling are provided with a buckling groove, the cross section of the buckling groove is trapezoidal and one side of the long side is close to the virtual plane of the buckling. The first C-shaped clamp and the first extension are integrally stamped by a metal plate to form a buckling groove, and the second C-shaped clamp and the second extension are integrally stamped by a metal plate to form a buckling groove. The first extension is provided with a quick-release notch opened along the length direction of the first extension starting from the end thereof, and a quick-release bolt is hinged in the buckling groove of the second extension, and the quick-release bolt is clamped in the quick-release notch and the first C-shaped clamp and the second C-shaped clamp are clamped by the quick-release nut and the quick-release bolt thread.

2. A quick release clamp according to claim 1, characterized in that: The buckling groove comprises a groove bottom wall and groove side walls located on both sides of the groove bottom wall.

3. A quick release clamp according to claim 2, characterized in that: One end of the quick-release bolt is provided with a hinge ear, and the hinge ear is hinged to the groove side walls on both sides of the buckling groove of the second extension part through a first hinge pin, and the central axis of the first hinge pin is parallel to the arc axis of the first C-shaped clamp and the second C-shaped clamp.

4. The quick-release clamp according to claim 2, characterized in that: The end of the first C-shaped clamp facing away from the first extension portion is provided with a first hinged tube formed by integrally stamping and rolling a metal plate, and the end of the second C-shaped clamp facing away from the second extension portion is provided with a second hinged tube formed by integrally stamping and rolling a metal plate. The first hinged tube and the second hinged tube are hingedly connected by a second hinge pin, and the central axis of the second hinge pin is parallel to the arc axis of the first C-shaped clamp and the second C-shaped clamp.

5. The quick-release clamp according to claim 4, characterized in that: The first hinged tube is connected to the bottom wall of the buckling groove on the first C-shaped clip; the second hinged tube is connected to the bottom wall of the buckling groove on the second C-shaped clip.

6. A quick release clamp according to claim 4 or 5, characterized in that: The axial lengths of the first hinge tube and the second hinge tube are less than or equal to half of the width of the bottom wall of the buckling groove.

7. The quick-release clamp according to claim 2, characterized in that: The quick-release nut is located on a side of the first extension portion that is away from the buckling groove.

8. The quick-release clamp according to claim 7, characterized in that: A gasket sleeved on the quick-release bolt is also provided between the quick-release nut and a surface of the first extension portion facing away from the buckling groove.

9. The quick-release clamp according to claim 3, characterized in that: A groove bottom wall of the buckling groove of the second extension portion is provided with a clearance groove, and the hinged ear is located in the clearance groove.

10. The quick-release clamp according to claim 1, characterized in that: The quick-release nut is a butterfly nut.

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