Cloth clamping device and filter press

Abstract

The utility model provides a cloth clamping device and a filter press. The cloth clamping device comprises a first clamp, a second clamp, a connecting piece and a matching piece, the first clamp and the second clamp are coaxially arranged and define a clamping groove together, and the clamping groove is used for clamping a part to be clamped; a first connecting hole is formed in the first clamp in the axial direction in a penetrating mode, a second connecting hole matched with the first connecting hole is formed in the second clamp in the axial direction in a penetrating mode, and a clamping groove is formed in the inner wall of the second connecting hole. The matching piece is arranged in the clamping groove so as to limit the matching piece to move in the axial direction. The connecting piece penetrates through the first connecting hole and is connected with the matching piece so as to connect the first clamp and the second clamp. According to the cloth clamping device, the probability that materials are polluted in the dismounting process can be reduced.

Description

Technical Field

[0001] The present application relates to the field of filtration technology, and in particular to a cloth clamp and a filter press. Background Art

[0002] The cloth clamp is a device that can fix the filter cloth on the filter plate. The cloth clamp can enhance the sealing between the filter cloth and the filter plate. When the filter press is working, the filter cloth will filter the material, so that the solid particles are retained on the filter cloth to form filter residue. The pressure of the cloth clamp can reduce the distance between the filter cloth and the filter plate, which can reduce the gap of the filter residue, so that the filter residue can be firmly fixed on the filter cloth, and at the same time make the filter cake more compact and firm, improving the effect of the filter press.

[0003] However, during the disassembly process of the cloth clamp, some of its structural materials and parts will fall into the material, making the material easily contaminated.

[0004] In view of this, this application is hereby filed. Utility Model Content

[0005] The present application provides a cloth clamp and a filter press to solve the technical problem that the existing cloth clamp is easy to contaminate materials during the disassembly process.

[0006] In a first aspect, the present application provides a cloth clamp, comprising: a first clamp, having a first connecting hole extending through the axial direction; a second clamp, having a second connecting hole extending through the axial direction and cooperating with the first connecting hole, and a clamping groove being provided on the inner wall of the second connecting hole; a mating piece, arranged in the clamping groove, to limit the axial movement of the mating piece; and a connecting piece, passing through the first connecting hole and connected to the mating piece, to connect the first clamp and the second clamp; the second clamp is coaxially arranged with the first clamp and together they form a clamping groove, and the clamping groove is used to clamp the component to be clamped.

[0007] In a further solution of the present application, the inner wall of the second connecting hole is radially recessed to form a slot; the slot has a first limiting surface and a second limiting surface, the first limiting surface and the second limiting surface are axially arranged opposite to each other, and the mating piece is axially arranged between the first limiting surface and the second limiting surface to limit the axial movement of the mating piece.

[0008] In this solution, the mating piece is axially arranged between the first limiting surface and the second limiting surface of the slot. Since the first limiting surface and the second limiting surface are axially arranged relative to each other, the mating piece will be axially limited in the slot by the first limiting surface and the second limiting surface, thereby achieving the effect of preventing the first clamp and the second clamp from axial movement.

[0009] In a further solution of the present application, the mating part includes a first mating part, a connecting part and a second mating part which are connected in sequence along the axial direction, and the first mating part and the second mating part protrude radially from the connecting part; the first mating part stops at the first limit surface, and the second mating part stops at the second limit surface.

[0010] In this solution, the first matching part stops at the first limiting surface to achieve axial limitation on one side, and the second matching part stops at the second limiting surface to achieve axial limitation on the other side. The two cooperate with each other to limit the entire matching part axially and avoid axial displacement of the matching part in the slot.

[0011] In a further solution of the present application, the first matching portion, the connecting portion and the second matching portion together form a limiting groove; a limiting protrusion protruding in the radial direction is provided in the groove, and the limiting protrusion is snapped into the limiting groove.

[0012] In this scheme, by providing a limiting groove surrounded by a first matching portion, a second matching portion and a connecting portion on the card slot, and providing a limiting protrusion in the card slot that radially protrudes and snaps into the limiting groove, the matching piece can be further limited, and at the same time, the connection between the matching piece and the second connecting clamp is made more stable.

[0013] In a further solution of the present application, the limiting protrusion is centrally arranged in the slot; and the matching piece is centrally arranged in the second connecting hole.

[0014] In this solution, the limiting protrusion is centrally arranged in the slot to balance the supporting force of the two ends on the first matching part and the second matching part, avoiding damage to the limiting protrusion; the matching piece is centrally arranged in the connecting hole to also balance the force at both ends.

[0015] In a further embodiment of the present application, the length ratio of the fitting piece to the second connecting hole is 5:6-8; and / or the length ratio of the connecting portion to the fitting piece is 2:4-5.

[0016] In a further solution of the present application, the length of the fitting is 30 mm, the length of the limiting groove is 10 mm; and / or the length of the screw portion is 68 mm.

[0017] In a further embodiment of the present application, the first clamp includes a first clamping portion, an extension portion and a first main body portion which are arranged in sequence in the radial direction, and the first connecting hole is opened on the first main body portion; the second clamp includes a second clamping portion and a second main body portion which are arranged in sequence in the radial direction, and the second connecting hole is opened on the second main body portion; the first clamping portion, the extension portion, the second clamping portion and the second main body portion are together arranged to form a clamping groove.

[0018] In this solution, the first clamping portion, the extension portion, the second clamping portion and the second main body portion are together arranged to form a clamping groove to clamp the component to be clamped. The first clamping portion and the second clamping portion provide clamping force to the component to be clamped, and the axial extension of the extension portion can provide installation space for the connector.

[0019] In a further solution of the present application, a first feed hole is formed on the first main body portion, and a second feed hole is formed on the second main body portion, and the first feed hole and the second feed hole are coaxially arranged.

[0020] In this solution, the first feeding hole and the second feeding hole are respectively provided on the first main body part and the second main body part so that the material can pass through the cloth clamp.

[0021] In a further embodiment of the present application, the connecting member includes a rod and an end portion, the rod portion is passed through the first connecting hole and the mating member and is threadedly connected to the mating member, and the end portion is stopped outside the first connecting hole; the length of the rod portion is less than or equal to the sum of the length of the first connecting hole and the length of the second connecting hole.

[0022] In this solution, since the length of the rod is less than or equal to the sum of the length of the first connecting hole and the length of the second connecting hole, the rod will be accommodated in the first connecting hole and the second connecting hole to prevent the rod from being affected and causing the first clamp and the second clamp to loosen.

[0023] In a further solution of the present application, a receiving groove is formed around the extension portion and the first main body portion; the thickness of the end portion in the axial direction is less than or equal to the depth of the receiving groove in the axial direction.

[0024] In this solution, the extension portion and the first main body portion are arranged to form a receiving groove. Since the axial thickness of the end portion is less than or equal to the depth of the receiving groove, the entire end portion is received in the receiving groove, thereby preventing the end portion from being affected by external factors and causing the first clamp and the second clamp to loosen.

[0025] A second aspect of the present application provides a filter press, comprising a filter plate and the cloth clamp provided in the first aspect of the present application, wherein the filter plate is clamped in a clamping groove by the cloth clamp.

[0026] In summary, the cloth clamp and filter press provided by the present application have at least the following beneficial effects:

[0027] The connecting piece passes through the first connecting hole axially extending through the first clamp and then connects with the matching piece, thereby connecting the first clamp and the second clamp. When the matching connection is completed, the part to be clamped is placed in the middle of the clamping groove surrounded by the first clamp and the second clamp. After the matching connection is completed, the part to be clamped can be clamped and fixed. Since the inner wall of the second connecting hole is provided with a slot, the matching piece is arranged in the slot to achieve axial limitation. Therefore, the matching piece will be in the slot when the first clamp and the second clamp are disassembled and assembled, which can reduce the probability of it falling from the cloth clamp. At the same time, since the matching piece will not move axially, the first clamp and the second clamp will not move axially either, thereby reducing the probability of the first clamp and the second clamp loosening during use. Therefore, the cloth clamp provided by the present application can reduce the probability of contaminating materials during its disassembly process. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the specific implementation of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific implementation or the prior art description. Obviously, the drawings described below are some implementations of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 A schematic diagram of the structure of the cloth clamp provided in an embodiment of the present application, wherein in order to facilitate the display of the clamping groove, the clamping part at the lower end of the figure is removed;

[0030] Figure 2 A schematic diagram of the structure of a second clamp provided in an embodiment of the present application, wherein the matching piece is removed from the second connecting hole at the upper end of the figure in order to facilitate the display of the card slot;

[0031] Figure 3 for Figure 2 A partial enlarged view of the middle A;

[0032] Figure 4 A schematic diagram of the structure of the matching parts provided in the embodiment of the present application;

[0033] Figure 5 A schematic diagram of the structure of a first clamp provided in an embodiment of the present application; and

[0034] Figure 6 A schematic diagram of the structure of a connector provided in an embodiment of the present application.

[0035] The reference numerals are as follows:

[0036] 100, first clamp; 100A, first connecting hole; 100B, first feeding hole; 110, first main body; 120, extension part; 130, first clamping part;

[0037] 200, second fixture; 200A, second connecting hole; 200B, slot; 200B1, first limiting surface; 200B2, second limiting surface; 200C, second feeding hole; 210, second main body; 220, second clamping part; 230, limiting protrusion;

[0038] 300, connecting member; 310, rod; 320, end;

[0039] 400, matching piece; 410, first matching portion; 420, connecting portion; 430, second matching portion; 400A, limiting groove; 20, filter plate. DETAILED DESCRIPTION

[0040] In the description of the present application, it should be understood that if terms such as "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 appear to indicate the orientation or position relationship, unless otherwise specified, they are understood to be based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application.

[0041] In addition, if there is a feature defined as "first" or "second", it is only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Features defined as "first" or "second" may explicitly or implicitly include at least one of the defined features. If there is a description of "plurality", the general meaning is to include at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0042] In this application, unless otherwise clearly specified and limited, the terms such as "installed", "connected", "connected", "fixed" and so on should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection, it can be a direct connection, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0043] In the description of this specification, if the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" appear, it means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0044] Please refer to Figure 1 (In order to facilitate the display of the clamping groove 10A, the clamping groove part at the lower end of the figure has removed the part to be clamped). In the first aspect of the present application, a cloth clamp is provided, including a first clamp 100, a second clamp 200, a connecting piece 300 and a matching piece 400. The first clamp 100 is provided with a first connecting hole 100A extending axially therethrough; the second clamp 200 is provided with a second connecting hole 200A extending axially therethrough to match the first connecting hole 100A, and a clamping groove 200B is provided on the inner wall of the second connecting hole 200A; the matching piece 400 is provided in the clamping groove 200B to limit the axial movement of the matching piece 400; the connecting piece 300 is passed through the first connecting hole 100A and is connected to the matching piece 400 to connect the first clamp 100 and the second clamp 200; the second clamp 200 is coaxially arranged with the first clamp 100 and together encloses a clamping groove 10A, and the clamping groove 10A is used to clamp the part to be clamped.

[0045] In this scheme, the connecting member 300 passes through the first connecting hole 100A which is axially arranged on the first clamp 100 and is locked and matched with the matching member 400, so as to connect the first clamp 100 and the second clamp 200. In the matching connection, the part to be clamped can be placed in the clamping groove 10A formed by the first clamp 100 and the second clamp 200, and the part to be clamped can be clamped and fixed after the matching connection is completed. Since the inner wall of the second connecting hole 200A is provided with a clamping groove 200B, the matching member 400 is arranged in the clamping groove 200B to achieve axial limitation, so the matching member 400 will be in the clamping groove 200B when the first clamp 100 and the second clamp 200 are disassembled and assembled, which can reduce the probability of it falling from the cloth clamp. At the same time, since the matching member 400 will not move axially, the first clamp 100 and the second clamp 200 will not move axially, thereby reducing the probability of the first clamp 100 and the second clamp 200 loosening during use. Therefore, the cloth clamp provided by the present application can reduce the probability of contaminating materials during the disassembly process.

[0046] In the above solution, the axial direction generally refers to the direction along or parallel to the longitudinal axis of the first clamp 100 and the second clamp 200. The material of the first clamp 100 and the second clamp 200 can be a cloth clamp material well known in the art, such as polypropylene.

[0047] In a further embodiment of the present application, the number of the first connection holes 100A can be multiple, and the multiple first connection holes 100A are arranged at intervals along the circumferential direction. The inner wall of the second connection hole 200A can be recessed along its radial direction to form a slot 200B. Specifically, refer to Figure 2 (In order to facilitate the display of the card slot 200B, the second connecting hole 200A at the upper end of the figure has the mating piece 400 removed) and Figure 3 The slot 200B has a first limiting surface 200B1 and a second limiting surface 200B2, which are axially arranged opposite to each other. The fitting 400 is axially arranged between the first limiting surface 200B1 and the second limiting surface 200B2 to limit the axial movement of the fitting 400.

[0048] In this solution, the circumferential direction generally refers to the circumferential direction of the first clamp 100, that is, the circumferential direction around the longitudinal axis of the first clamp 100. The radial direction generally refers to the direction perpendicular to the longitudinal axis of the second clamp 200. The fitting 400 is axially arranged between the first limiting surface 200B1 and the second limiting surface 200B2 of the slot 200B. Since the first limiting surface 200B1 and the second limiting surface 200B2 are arranged opposite to each other in the axial direction, the fitting 400 will be axially limited in the slot 200B by the first limiting surface 200B1 and the second limiting surface 200B2, thereby achieving the effect of preventing the first clamp 100 and the second clamp 200 from axially moving.

[0049] In a further aspect of the present application, reference is made to Figure 4 The mating piece 400 includes a first mating portion 410, a connecting portion 420 and a second mating portion 430 which are sequentially connected along the axial direction, and the first mating portion 410 and the second mating portion 430 protrude from the connecting portion 420 in the radial direction; the first mating portion 410 stops at the first limiting surface 200B1, and the second mating portion 430 stops at the second limiting surface 200B2.

[0050] In this solution, the first matching portion 410 stops at the first limiting surface 200B1 to achieve axial limiting on one side, and the second matching portion 430 stops at the second limiting surface 200B2 to achieve axial limiting on the other side. The two cooperate with each other to limit the entire matching component 400 axially and avoid axial displacement of the matching component 400 in the slot 200B.

[0051] In a further aspect of the present application, reference is made to Figure 3 and Figure 4The first matching portion 410, the connecting portion 420 and the second matching portion 430 together form a limiting groove 400A; a limiting protrusion 230 protruding in the radial direction is provided in the slot 200B, and the limiting protrusion 230 is inserted into the limiting groove 400A.

[0052] In this solution, by providing a limiting groove 400A surrounded by a first matching portion 410, a second matching portion 430 and a connecting portion 420 on the slot 200B, and providing a limiting protrusion 230 that radially protrudes in the slot 200B to snap into the limiting groove 400A, the fitting 400 can be further limited, and at the same time, the connection between the fitting 400 and the second connecting clamp can be more stable.

[0053] In a further solution of the present application, the limiting protrusion 230 is centrally disposed in the slot 200B; and the matching piece 400 is centrally disposed in the second connecting hole 200A.

[0054] In this solution, the limiting protrusion 230 is centrally arranged in the slot 200B to balance the supporting force of the first matching part 410 and the second matching part 430 at both ends, thereby avoiding damage to the limiting protrusion 230; the matching part 400 is centrally arranged in the connecting hole to also balance the force at both ends.

[0055] In a further solution of the present application, the length ratio of the fitting 400 to the second connecting hole 200A is 5:6-8; the length ratio of the connecting portion 420 to the fitting 400 is 2:4-5.

[0056] In a further solution of the present application, the length of the fitting 400 may be 30 mm, the length of the limiting groove 400A may be 10 mm; and / or the length of the screw portion 310 may be 68 mm.

[0057] In some specific embodiments of the present application, the fitting 400 may be a nut.

[0058] Please refer to further Figure 5 In a further embodiment of the present application, the first clamp 100 includes a first clamping portion 130, an extension portion 120 and a first main body portion 110 which are arranged in sequence in the radial direction, and a first connecting hole 100A is provided on the first main body portion 110; the second clamp 200 includes a second clamping portion 220 and a second main body portion 210 which are arranged in sequence in the radial direction, and a second connecting hole 200A is provided on the second main body portion 210; the first clamping portion 130, the extension portion 120, the second clamping portion 220 and the second main body portion 210 are together arranged to form a clamping groove 10A.

[0059] In this solution, the first clamping portion 130, the extension portion 120, the second clamping portion 220 and the second main body portion 210 are together arranged to form a clamping groove 10A to clamp the component to be clamped. The first clamping portion 130 and the second clamping portion 220 provide clamping force to the component to be clamped, and the extension portion 120 is axially extended to provide installation space for the connector 300.

[0060] In a further solution of the present application, a first feed hole 100B is formed on the first main body 110 , and a second feed hole 200C is formed on the second main body 210 . The first feed hole 100B and the second feed hole 200C are coaxially arranged.

[0061] In this solution, the first feeding hole 100B and the second feeding hole 200C are respectively provided on the first main body 110 and the second main body 210 so that the material can pass through the cloth clamp.

[0062] Please refer to further Figure 6 In a further solution of the present application, the connecting member 300 includes a rod portion 310 and an end portion 320, the rod portion 310 is passed through the first connecting hole 100A and the mating member 400 and is threadedly connected to the mating member 400, and the end portion 320 is stopped outside the first connecting hole 100A; the length of the rod portion 310 is less than or equal to the sum of the length of the first connecting hole 100A and the length of the second connecting hole 200A.

[0063] In this solution, since the length of the rod 310 is less than or equal to the sum of the length of the first connecting hole 100A and the length of the second connecting hole 200A, the rod 310 will be accommodated in the first connecting hole 100A and the second connecting hole 200A to prevent the rod 310 from being affected and causing the first clamp 100 and the second clamp 200 to loosen.

[0064] In a further solution of the present application, the extension portion 120 and the first main body portion 110 are surrounded by a receiving groove; the thickness of the end portion 320 in the axial direction is less than or equal to the depth of the receiving groove in the axial direction.

[0065] In this solution, the extension portion 120 and the first main body portion 110 are arranged to form a receiving groove. Since the axial thickness of the end portion 320 is less than or equal to the depth of the receiving groove, the entire end portion 320 is received in the receiving groove, preventing the end portion 320 from being affected by external factors and causing the first clamp 100 and the second clamp 200 to loosen.

[0066] In the above embodiments, the connecting member 300 may be a bolt.

[0067] The second aspect of the present application provides a filter press, comprising a filter plate 20 and the cloth clamp provided in the first aspect of the present application, wherein the filter plate 20 is clamped in a clamping groove 10A by the cloth clamp.

[0068] It is understandable that the filter press in the above scheme also includes other common components, such as filter media, hydraulic system, control system, etc., which will not be described in detail in this application.

[0069] In practical applications, in order to better utilize the cloth clamp, the length of the mating part can be 30 mm, the length of the limiting protrusion and the limiting groove can be 10 mm, the length of the second connecting hole can be 42 mm, the length of the first connecting hole can be 19 mm, the length of the screw part can be 60 mm, and the length of the end part can be 8 mm.

[0070] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Those skilled in the art can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A cloth clamp, characterized in that: include: The first clamp (100) is provided with a first connection hole (100A) extending therethrough in the axial direction; A second clamp (200), having a second connection hole (200A) that matches the first connection hole (100A) and is arranged through the second connection hole (200A) along the axial direction, and a clamping groove (200B) is arranged on the inner wall of the second connection hole (200A); A matching piece (400) is disposed in the clamping groove (200B) to limit the matching piece (400) from moving along the axial direction; as well as a connecting member (300) passing through the first connecting hole (100A) and connected to the matching member (400) so as to connect the first clamp (100) and the second clamp (200); The second clamp (200) is coaxially arranged with the first clamp (100) and together forms a clamping groove (10A), and the clamping groove (10A) is used to clamp the component to be clamped.

2. The cloth clamp according to claim 1, characterized in that: The inner wall of the second connecting hole (200A) is recessed along its radial direction to form the clamping groove (200B); The clamping slot (200B) has a first limiting surface (200B1) and a second limiting surface (200B2), the first limiting surface (200B1) and the second limiting surface (200B2) are arranged opposite to each other along the axial direction, and the matching piece (400) is arranged between the first limiting surface (200B1) and the second limiting surface (200B2) in the axial direction to limit the movement of the matching piece (400) along the axial direction.

3. The cloth clamp according to claim 2, characterized in that: The matching piece (400) comprises a first matching portion (410), a connecting portion (420) and a second matching portion (430) which are sequentially connected along the axial direction, and the first matching portion (410) and the second matching portion (430) protrude from the connecting portion (420) in the radial direction; The first matching portion (410) is stopped at the first limiting surface (200B1), and the second matching portion (430) is stopped at the second limiting surface (200B2).

4. The cloth clamp according to claim 3, characterized in that: The first matching portion (410), the connecting portion (420) and the second matching portion (430) together form a limiting groove (400A); A limiting protrusion (230) protruding in the radial direction is provided in the clamping groove (200B), and the limiting protrusion (230) is clamped into the limiting groove (400A).

5. The cloth clamp according to claim 4, characterized in that: The limiting protrusion (230) is centrally arranged in the slot (200B); and / or The fitting (400) is centrally arranged in the second connecting hole (200A).

6. The cloth clamp according to claim 3, characterized in that: The length ratio of the matching piece (400) to the second connecting hole (200A) is 5:6-8; and / or The length ratio of the connecting portion (420) to the matching piece (400) is 2:4-5.

7. The cloth clamp according to any one of claims 1 to 6, characterized in that: The first clamp (100) comprises a first clamping portion (130), an extending portion (120) and a first main body portion (110) which are sequentially arranged in a radial direction, and the first connecting hole (100A) is provided on the first main body portion (110); The second clamp (200) comprises a second clamping portion (220) and a second main body portion (210) which are sequentially arranged in a radial direction, and the second connecting hole (200A) is provided on the second main body portion (210); The first clamping portion (130), the extending portion (120), the second clamping portion (220) and the second main body portion (210) are together arranged to form the clamping groove (10A).

8. The cloth clamp according to claim 7, characterized in that: The connecting member (300) comprises a rod portion (310) and an end portion (320), wherein the rod portion (310) is inserted through the first connecting hole (100A) and the matching member (400) and is threadedly connected to the matching member (400), and the end portion (320) is stopped outside the first connecting hole (100A); The length of the rod portion (310) is less than or equal to the sum of the length of the first connection hole (100A) and the length of the second connection hole (200A).

9. The cloth clamp according to claim 8, characterized in that: The extension portion (120) and the first main body portion (110) are surrounded by a receiving groove; The thickness of the end portion (320) in the axial direction is less than or equal to the depth of the receiving groove in the axial direction.

10. A filter press, characterized in that: It comprises a filter plate (20) and the cloth clamp according to any one of claims 1 to 9, wherein the filter plate (20) is clamped in the clamping groove (10A) by the cloth clamp.

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