Inner supporting type clamp suitable for multi-petal mechanism

Abstract

The invention discloses an inner supporting type clamp suitable for a multi-petal mechanism, and belongs to the technical field of clamping, the inner supporting type clamp comprises a clamp body extending in the first direction, the two ends of the clamp body are used for being detachably connected with two base plates of the multi-petal mechanism, and a supporting assembly is arranged in the middle of the clamp body to support all petals of the multi-petal mechanism; the supporting assembly comprises a plurality of supporting units arranged in the circumferential direction of the clamp body, the length of each supporting unit is adjustable, one end of each supporting unit is connected to the clamp body, and the other end of each supporting unit is used for being connected with the petal units of the multi-petal mechanism, so that each petal unit of the multi-petal mechanism is connected with at least one supporting unit. According to the inner supporting type clamp suitable for the multi-petal mechanism, the length of the corresponding supporting unit can be adjusted according to the actual radial position of each petal of the multi-petal mechanism, the inner supporting type clamp suitable for the multi-petal mechanism is suitable for multi-petal structures with complex and diversified inner cavity structures and different radial lengths, and the special inner supporting requirements of multi-petal combined products such as the multi-petal mechanism can be met.

Description

Technical Field

[0001] The invention belongs to the technical field of clamping, and in particular relates to an internal support clamp suitable for a multi-petal mechanism. Background Art

[0002] Currently, there are numerous types of internal support fixtures, with the majority being used for cylindrical parts. These fixtures typically employ an internal expansion mandrel. Their operating principle is to expand a spring collet and then tighten it against the inner bore of the cylindrical part, achieving support and tightening from the inside out. The key component of an internal expansion mandrel is a rotating spring collet that fits within the inner bore of the cylindrical part. Because excessive deformation of the collet is imperative, certain precision requirements must be met for the inner bore of the cylindrical part, serving as a positioning reference and support element. The tolerance must be within a range of 0.1 to 0.5 mm.

[0003] The multi-valve mechanism is different from cylindrical parts. First of all, the multi-valve mechanism is an assembly structure, which is assembled from multi-valve parts. Multi-valve parts are generally thin-walled and slender parts. Therefore, the multi-valve mechanism has poor rigidity and is easy to deform during mechanical processing of its appearance. Secondly, the inner cavity contour shapes of each petal of the multi-valve mechanism are not exactly the same. Thirdly, the radial dimension errors of the inner cavities of each petal of the multi-valve mechanism are large, and some even have large differences in basic dimensions. The internal expansion core shaft cannot meet the internal support requirements of the multi-valve mechanism. Multi-valve combination products such as the multi-valve mechanism require tooling that is adapted to their multi-valve structure and can prevent deformation. Summary of the Invention

[0004] In response to one or more of the above-mentioned defects or improvement needs in the prior art, the present invention provides an internal support clamp suitable for multi-petal mechanisms, which is suitable for multi-petal structures with different radial dimensions, can meet the special internal support requirements of multi-petal combination products such as multi-petal mechanisms, has a simple structure, and is easy to adjust and replace.

[0005] To achieve the above-mentioned object, the present invention provides an internal support type clamp suitable for a multi-petal mechanism, comprising a clamp body extending along a first direction; The two ends of the clamp body are used to be detachably connected to the two base plates of the multi-petal mechanism, and the middle part of the clamp body is provided with a support assembly or a plurality of support assemblies are provided at intervals along the axial direction; The support assembly includes a plurality of support units arranged along the circumference of the clamp body. The length of the support unit is adjustable, one end of which is connected to the clamp body, and the other end is used to connect with the petal unit of the multi-petal mechanism, so that each petal unit of the multi-petal mechanism is connected to at least one of the support units.

[0006] As a further improvement of the present invention, the support unit includes a support member and an adjusting screw sleeve, one end of the support member is connected to the clamp body, and the other end is threadedly connected to the adjusting screw sleeve, and the connection length between the adjusting screw sleeve and the support member is adjustable.

[0007] As a further improvement of the present invention, the support unit further includes a locking nut sleeved on the support member to lock the adjusting screw sleeve.

[0008] As a further improvement of the present invention, the support member is threadedly connected to the clamp body, and an anti-rotation member is provided at the connection between the clamp body and the support member to prevent the connection between the support member and the clamp body from loosening.

[0009] As a further improvement of the present invention, the support unit also includes a top block, which is rotatably connected to one end of the adjusting screw sleeve away from the support member, and the side of the top block facing away from the adjusting screw sleeve is in contact with the inner wall surface of the corresponding petal unit.

[0010] As a further improvement of the present invention, a concave-convex matching structure is provided at the joint between the top block and the petal unit for limiting the position of the two joint surfaces.

[0011] As a further improvement of the present invention, an insert is provided on the side of the top block facing the adjusting screw sleeve, the insert is rotatably connected to the adjusting screw sleeve, and the insert is made of a material with a higher hardness than that of the top block.

[0012] As a further improvement of the present invention, the top block is made of a material with a lower hardness than the corresponding petal unit.

[0013] As a further improvement of the present invention, the clamp body is prism-shaped, and the number of edges of the prism is the same as the number of petals of the multi-petal mechanism; Each supporting assembly includes supporting units corresponding to each of the petal units, and the supporting units are connected to the side wall surfaces of the clamp body in a one-to-one correspondence.

[0014] As a further improvement of the present invention, the clamp body and the base plate are connected via a flange.

[0015] The above-mentioned improved technical features can be combined with each other as long as they do not conflict with each other.

[0016] In general, the above technical solutions conceived by the present invention have the following beneficial effects compared with the prior art: (1) The internal support clamp for a multi-petal mechanism of the present invention comprises a clamp body extending in the axial direction, the two ends of the clamp body being detachably connected to the two base plates of the multi-petal mechanism, a support assembly being provided in the middle of the clamp body to support each petal of the multi-petal mechanism, the support assembly comprising a plurality of support units, the length of the support unit being adjustable, one end of which is connected to the clamp body, and the other end of which is used to connect to the petal unit of the multi-petal mechanism, so that each petal unit of the multi-petal mechanism is connected to at least one support unit. The internal support clamp for a multi-petal mechanism of the present invention can adjust the length of the corresponding support unit according to the actual radial position of each petal of the multi-petal mechanism, and is suitable for multi-petal structures with complex and diverse inner cavity structures and different radial lengths, and can meet the special requirements for internal support of multi-petal combination products such as multi-petal mechanisms.

[0017] (2) The internal support type clamp of the present invention is suitable for a multi-petal mechanism, and the length adjustment of the support unit is achieved by threaded connection between the support member and the adjusting screw sleeve. A locking nut is also provided on the support member, which can lock the adjusting screw sleeve in the adjusted position to prevent the adjusting screw sleeve from loosening. An anti-rotation member is also provided at the connection between the clamp body and the support member to prevent the connection between the support member and the clamp body from loosening, thereby ensuring that the internal support type clamp maintains a stable supporting state without loosening when in use.

[0018] (3) The internal support clamp of the present invention is suitable for a multi-petal mechanism. The top block is connected to the end of the adjusting screw sleeve away from the support member by rotation, so that the top block can be deflected in any direction and at a small angle around the end of the adjusting screw sleeve, so that the side surface of the top block is in contact with the inner wall surface of the petal unit to stably support the petal unit; and a concave-convex matching structure is provided at the contact point between the top block and the petal unit for limiting the two contact surfaces, so that the top block will not rotate or move after contacting the inner wall of the petal unit, so as to avoid changes in the contact position and causing failure of the support unit.

[0019] (4) The internal support type clamp of the present invention is suitable for a multi-petal mechanism. The top block is rotatably connected to the adjusting screw sleeve by an embedded insert with relatively high hardness, so that the insert and the end of the adjusting screw sleeve rub against each other, thereby improving the durability of the internal support type clamp. The top block is made of a material with a hardness lower than that of the petal unit to protect the inner cavity surface of each petal of the multi-petal mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 is a three-dimensional diagram of an internal support clamp suitable for a multi-petal mechanism in an embodiment of the present invention; Figure 2 Schematic diagram of the combined support of an internal support type clamp suitable for a multi-petal mechanism in an embodiment of the present invention; Figure 3 is a cross-sectional view of an internally supported clamp suitable for a multi-petal mechanism according to an embodiment of the present invention; Figure 4 yes Figure 3 Cross-sectional view along AA direction; Figure 5 is an exploded view of the support unit in an embodiment of the present invention.

[0022] In all the drawings, the same figure marks represent the same technical features, specifically: 1. Clamp body; 2. Support assembly; 21. Support unit; 211. Support member; 212. Adjusting screw sleeve; 213. Locking nut; 214. Top block; 215. Insert; 3. Anti-rotation member; 4. Flange. DETAILED DESCRIPTION

[0023] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only intended to illustrate the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0026] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0027] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0028] Example: It should be noted that the internal support clamp in the present application is used to support each petal unit of the multi-petal mechanism, wherein the multi-petal mechanism includes two base plates arranged relative to each other along a first direction and a plurality of petal units arranged at intervals around the first direction, and each petal unit is extended along the first direction, and its two ends are respectively connected to the two base plates. Specifically, the number of petals of the multi-petal mechanism is an even number or an odd number, each petal is an independent component, the petal unit is generally a thin-walled slender part, the inner cavity of each petal is not a single, regular circular rotating surface, and the specific structural forms are diverse, or there are criss-crossing reinforcement ribs, or there are structures such as bosses for assembling other components, and the radial dimensional error of the inner cavity of each petal is large, and even the basic dimensions are different. The internal support clamp of the present invention is suitable for multi-petal mechanisms of combined structure, especially for medium and large multi-petal mechanisms, and can enhance the rigidity of the multi-petal mechanism to prevent deformation during machining. It can also be used to prevent deformation in assembly, storage, and transportation.

[0029] See also Figure 1~Figure 2 In a preferred embodiment of the present invention, the internal support clamp suitable for a multi-petal mechanism includes a clamp body 1 extending along a first direction, and the two ends of the clamp body 1 are used for detachable connection with the two base plates of the multi-petal mechanism. A support assembly 2 is provided in the middle of the clamp body 1, or a plurality of support assemblies 2 are provided at intervals along the axial direction. The support assembly 2 includes a plurality of support units 21 arranged along the circumference of the clamp body 1. The length of the support unit 21 is adjustable, one end of which is connected to the clamp body 1, and the other end is used to connect with the petal unit of the multi-petal mechanism, so that each petal unit of the multi-petal mechanism is connected to at least one support unit 21.

[0030] In this preferred embodiment, each petal unit is supported by at least one support unit 21. When the circumferential dimension of a petal unit is large, two or more support units 21 are required in the annular direction to support the petal unit. Therefore, the number of support units 21 in each support assembly 2 is greater than or equal to the number of petal units. The support assembly 2 is installed on the clamp body 1 before or after the clamp body 1 is connected to the substrate. After the clamp body 1 is installed and connected to the substrate of the multi-petal mechanism, the length of each support unit 21 is adjusted from the gap between two adjacent petal units so that the end away from the clamp body 1 extends to connect with the corresponding petal unit to support the petal unit. The length of each support unit 21 can be the same or different, and is determined according to the actual radial position of each petal of the multi-petal mechanism. In actual use, along the first direction, each petal of the multi-petal mechanism is supported by at least one support unit 21. When the size of the multi-petal mechanism in the first direction is large, it is necessary to arrange multiple support units 21 at intervals in the first direction to support each petal unit, that is, multiple support assemblies 2 are arranged at intervals along the axial direction of the clamp body to achieve combined support of the multi-petal mechanism, such as Figure 2 shown.

[0031] The internal support clamp suitable for multi-petal mechanisms of the present invention is provided with a length-adjustable support unit 21 corresponding to each petal to meet the special requirements of internal support for multi-petal combination products such as multi-petal mechanisms. It is suitable for multi-petal structures with complex and diverse inner cavity structures and different radial lengths. It has a simple structure and is easy to adjust and replace.

[0032] Preferably, the support unit 21 and the petal unit may be connected in such a way that the end of the support unit 21 abuts against the inner wall surface of the petal unit.

[0033] Preferably, the clamp body 1 and the base plate are connected via a flange 4 .

[0034] Preferably, the length of the support unit 21 can be adjusted through a sleeve structure, a slide groove structure, a screw structure, etc.

[0035] For more specific preference, please refer to Figures 3 to 5 The support unit 21 includes a support member 211 and an adjusting screw sleeve 212. One end of the support member 211 is connected to the clamp body 1, and the other end is threadedly connected to the adjusting screw sleeve 212. The connection length between the adjusting screw sleeve 212 and the support member 211 is adjustable.

[0036] In this embodiment, after the support member 211 is connected to the clamp body 1, the adjusting screw sleeve 212 is sleeved on the end of the support member 211 away from the clamp body 1, and the length of the support unit 21 is adjusted by the threaded connection between the adjusting screw sleeve 212 and the support member 211, with high adjustment accuracy and easy operation.

[0037] Preferably, the support member 211 is a support screw or a support cylinder with external threads.

[0038] Further preferably, the support unit 21 further includes a locking nut 213 sleeved on the support member 211 to lock the adjusting screw sleeve 212 to ensure that the internal support clamp maintains its state without loosening during support.

[0039] Specifically, when the adjusting screw sleeve 212 is adjusted to the right position, one end of the adjusting screw sleeve 212 abuts against the inner wall surface of the petal unit, and the locking nut 213 on the rotating support 211 abuts against the other end of the adjusting screw sleeve 212, so that the adjusting screw sleeve 212 cannot rotate, and the position of the adjusting screw sleeve 212 is fixed so that it stably abuts against the inner wall of the petal unit.

[0040] Preferably, the support member 211 is threadedly connected to the clamp body 1 , and an anti-rotation member 3 is provided at the connection between the clamp body 1 and the support member 211 to prevent the connection between the support member 211 and the clamp body 1 from loosening.

[0041] Specifically, the anti-rotation part 3 is a screw. After the support part 211 is connected to the clamp body 1, the screw is installed next to the support part 211 so that the nut of the screw abuts against the side wall of the non-circular cross section of the support part 211 to limit the rotation of the support part 211.

[0042] Further preferably, the support unit 21 further comprises a top block 214 rotatably connected to one end of the adjusting screw sleeve 212 away from the support member 211 , and the side of the top block 214 facing away from the adjusting screw sleeve 212 is in contact with the inner wall surface of the corresponding petal unit.

[0043] In this preferred embodiment, the side surface of the top block 214 can be fully or partially fitted with the inner wall surface of the petal unit, and different angles can be formed between the inner wall surface of each petal unit and the support unit 21. By providing a rotatably connected top block 214 at the end of the adjusting screw sleeve 212, the top block 214 can be deflected in any direction and at a small angle after being assembled with the adjusting screw sleeve 212, so as to adapt to the actual shape and size differences of the inner cavity fitting surface of each petal of the multi-petal mechanism, and ensure that the top block 214 and each petal of the multi-petal mechanism can fit well to stably support each petal unit.

[0044] In actual configuration, the connection portion between the top block 214 and the adjusting screw sleeve 212 adopts an anti-disengagement structure. Specifically, a groove is provided on the side of the top block 214 facing the adjusting screw sleeve 212. The groove is sequentially provided with a horn section, a first thread section, and a receiving section along the opening to the bottom surface. The adjusting screw sleeve 212 is provided with a second thread section at one end facing the top block 214. The diameter of the second thread section is smaller than the inner diameter of the horn section opening and the receiving section, slightly larger than the inner diameter of the first thread section, and the length of the second thread section is slightly smaller than the length of the receiving section. After the second thread section squeezes into the first thread section from the horn section of the groove, it is completely screwed into the receiving section. Then, the end of the second thread section abuts against the end of the first thread section to limit the position, thereby preventing the top block 214 from falling off the end of the adjusting screw sleeve 212. Preferably, the top of the second thread section is spherical to facilitate the rotation of the top block 214 around the second thread section.

[0045] Preferably, a concave-convex matching structure is provided at the fitting point between the top block 214 and the petal unit, which is used to limit the two fitting surfaces so that the top block 214 will not rotate or move after it is in contact with the inner wall surface of the petal unit, so as to prevent the top block 214 from shifting to the gap between the two petal units during the transportation or processing of the multi-petal mechanism, causing the support of the support unit 21 to fail.

[0046] Specifically, the fitting part of the inner wall surface of the petal unit is provided with a boss or a reinforcing rib, and the fitting part of the top block 214 is correspondingly provided with a groove or a through slot, such as Figure 1 The two types of top blocks 214 shown correspond to two different inner wall profiles. Furthermore, the contour of each top block 214's contact area is similar to the contour of the inner wall of each corresponding petal, with an appropriate gap. While maintaining a constant contact position between the two, the top block 214 can also be deflected at a small angle to achieve adaptive adjustment.

[0047] Further preferably, an insert 215 is provided on the side of the top block 214 facing the adjusting screw sleeve 212, and the insert 215 is rotatably connected to the adjusting screw sleeve 212. The insert 215 is made of a material with a higher hardness than the top block 214. The durability of the internal support clamp can be improved through the rotational friction between the insert 215 with higher hardness and the end of the adjusting screw sleeve 212.

[0048] Preferably, the insert 215 can be made of metal material.

[0049] Preferably, the top block 214 is connected to the insert 215 by bolts. Specifically, a stepped through hole is provided on the top block 214 , and the screw of the bolt passes through the stepped through hole and is connected to the threaded hole on the insert 215 .

[0050] Preferably, the top block 214 is made of a material with a lower hardness than the corresponding valve unit to protect the inner cavity surface of each valve of the multi-valve mechanism.

[0051] Preferably, the clamp body 1 is prism-shaped, and the number of edges of the prism is the same as the number of petals of the multi-petal mechanism. Each support assembly includes a support unit 21 corresponding to each petal unit one by one. The support units 21 in each support assembly 2 are connected to the side wall surface of the clamp body 1 one by one, so that the force on the clamp body 1 is more symmetrical.

[0052] In a specific embodiment, Figure 1 As shown, the multi-petal mechanism is a uniformly distributed six-petal combination structure, and the clamp body 1 is a regular hexagonal prism corresponding thereto. A support unit 21 is installed on each side wall surface, and each support unit 21 supports one petal of the multi-petal mechanism.

[0053] In actual application, depending on the number of petals of the multi-petal mechanism, the clamp body 1 can also be other regular polygons, such as a regular tetrahedron, a regular pentahedron, a regular octahedron, etc.; when the multi-petal mechanism is not a uniformly distributed multi-petal structure, the clamp body 1 is an irregular polygon.

[0054] The internal support clamp suitable for a multi-petal mechanism in the present invention comprises a clamp body 1 extending in the axial direction, the two ends of the clamp body 1 being detachably connected to the two base plates of the multi-petal mechanism respectively; a support assembly 2 is provided in the middle of the clamp body 1 to support each petal unit of the multi-petal mechanism, and the support assembly 2 comprises a plurality of support units 21 arranged along the circumference of the clamp body 1, and the length of each support unit 21 is adjustable, one end of which is connected to the clamp body 1, and the other end is used to connect to the petal unit of the multi-petal mechanism, so that each petal unit of the multi-petal mechanism is connected to at least one support unit 21. The internal support clamp suitable for a multi-petal mechanism of the present invention can adjust the length of the corresponding support unit according to the actual radial position of each petal of the multi-petal mechanism, and is suitable for multi-petal structures with complex and diverse inner cavity structures and different radial lengths, and can meet the special requirements for internal support of multi-petal combination products such as multi-petal mechanisms.

[0055] It will be easily understood by those skilled in the art that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An internal support clamp suitable for a multi-petal mechanism, characterized in that: It includes a clamp body extending along a first direction; The two ends of the clamp body are used to be detachably connected to the two base plates of the multi-petal mechanism, and the middle part of the clamp body is provided with a support assembly or a plurality of support assemblies are provided at intervals along the axial direction; The support assembly includes a plurality of support units arranged along the circumference of the clamp body. The length of the support unit is adjustable, one end of which is connected to the clamp body, and the other end is used to connect with the petal unit of the multi-petal mechanism, so that each petal unit of the multi-petal mechanism is connected to at least one of the support units.

2. The internal support clamp suitable for a multi-petal mechanism according to claim 1, characterized in that: The support unit includes a support member and an adjusting screw sleeve. One end of the support member is connected to the clamp body, and the other end is threadedly connected to the adjusting screw sleeve. The connection length between the adjusting screw sleeve and the support member is adjustable.

3. The internal support clamp suitable for a multi-petal mechanism according to claim 2, characterized in that: The support unit further includes a locking nut sleeved on the support member to lock the adjusting screw sleeve.

4. The internal support clamp suitable for a multi-petal mechanism according to claim 2, characterized in that: The support member is threadedly connected to the clamp body, and an anti-rotation member is provided at the connection between the clamp body and the support member to prevent the connection between the support member and the clamp body from loosening.

5. The internal support clamp suitable for a multi-petal mechanism according to claim 2, characterized in that: The support unit further comprises a top block, which is rotatably connected to an end of the adjusting screw sleeve away from the support member, and a side of the top block facing away from the adjusting screw sleeve is in contact with an inner wall surface of the corresponding petal unit.

6. The internal support clamp suitable for a multi-petal mechanism according to claim 5, characterized in that: The joint between the top block and the petal unit is provided with a concave-convex matching structure for limiting the two joint surfaces.

7. The internal support clamp suitable for a multi-petal mechanism according to claim 5, characterized in that: An insert is provided on one side of the top block facing the adjusting screw sleeve. The insert is rotatably connected to the adjusting screw sleeve and is made of a material with a higher hardness than that of the top block.

8. The internal support clamp suitable for a multi-petal mechanism according to any one of claims 5 to 7, characterized in that: The top block is made of a material with a lower hardness than the corresponding petal unit.

9. The internal support clamp suitable for a multi-petal mechanism according to any one of claims 1 to 7, characterized in that: The clamp body is prism-shaped, and the number of edges of the prism is the same as the number of petals of the multi-petal mechanism; Each supporting assembly includes a supporting unit corresponding to each of the petal units, and the supporting units are connected to the side wall surfaces of the clamp body in a one-to-one correspondence.

10. The internal support clamp suitable for a multi-petal mechanism according to any one of claims 1 to 7, characterized in that: The clamp body is connected to the base plate via a flange.

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