CN112032433A

CN112032433A - Fastening device

Info

Publication number: CN112032433A
Application number: CN202010766402.8A
Authority: CN
Inventors: 陈远来; 刘大潭
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-08-03
Filing date: 2020-08-03
Publication date: 2020-12-04

Abstract

A fastening device for fastening flanges of two pipes to each other, the fastening device comprising: a chain component, including plural connecting sheets and plural pivot pieces, the connecting sheets are pivoted with the pivot pieces in sequence to form a chain shape, the connecting sheet at one end of the chain component is defined as a first connecting sheet, the free end of the first connecting sheet is provided with a first pivot piece, the connecting sheet at the other end of the chain component is defined as a second connecting sheet, the free end of the second connecting sheet is provided with a second pivot piece; the positioning mechanism comprises a first part and a second part, wherein the first part and the second part are pivoted with each other, the first part is pivoted with one of the first pivot piece or the first connecting piece, the second part is detachably positioned to the second pivot piece, and the first part can swing between a release position and a positioning position relative to the second part.

Description

Fastening device

Technical Field

The present invention relates to fastening devices, and more particularly, to a fastening device for fixing a flange of a pipe.

Background

Generally, irreversible fixing means such as welding, adhesion and the like are usually used for connecting two pipes, however, if there is a possibility or need to separate two pipes again, other temporary connecting and fixing means are used, such as screwing the flanges of the two pipes to each other, or clamping and positioning the two flanges by using flange clamps, and once the two pipes are separated, the two pipes can be immediately separated.

A typical flange clip, as disclosed in US 5522625, generally includes two semicircular rings and a fixing mechanism connected between the two rings, wherein the two rings are sleeved on the two flanges to clamp the two flanges therein, and then the fixing mechanism tightens the two rings to achieve the fixing effect.

However, the shape and size of the clamping surface of such a structure depend on the inner surfaces of the two ring bodies, that is, only a flange with a specific size can be clamped by the two ring bodies, and as long as the size of the flange is larger or smaller, the ring bodies may be fixed only in a point contact manner, which is not good, and even may not be fixed at all.

Therefore, how to improve the effect of the flange clip contacting the flange and adapt to flanges with different sizes becomes an important subject in the present industry.

Disclosure of Invention

The main object of the present invention is to provide a fastening device which can reliably contact and hold flanges and is suitable for flanges of different sizes.

To achieve the above object, the present invention provides a fastening device for fastening flanges of two pipes, the fastening device including a chain component and a positioning mechanism.

The chain component comprises a plurality of connecting sheets and a plurality of pivot pieces, the connecting sheets are sequentially pivoted with the pivot pieces respectively to form a chain shape, the connecting sheet at one end of the chain component is defined as a first connecting sheet, the free end of the first connecting sheet is provided with a first pivot piece, the connecting sheet at the other end of the chain component is defined as a second connecting sheet, and the free end of the second connecting sheet is provided with a second pivot piece.

The positioning mechanism comprises a first part and a second part which are pivoted with each other, the length direction of the first connecting piece defines a first direction, the connecting line of the pivoted position of the first part and the first pivoting piece or one of the first connecting pieces to the pivoted position of the first part and the second part defines a second direction, the second part is detachably positioned to the second pivot piece, the first part can pivot and swing between a release position and a positioning position relative to the second part, when the first part is positioned at the positioning position, the second portion is positioned to the second pivot member and pulls the chain assembly taut in the first direction parallel to the second direction or at an angle of less than 180 degrees to a side away from the center of curvature of the chain assembly, when the first portion is in the release position, an included angle of more than 180 degrees is formed between the first direction and the second direction at one side far away from the curvature center of the chain component.

Preferably, the connecting pieces include a plurality of pairs of connecting pieces, each pair of connecting pieces are arranged side by side at a certain distance and are respectively connected with the adjacent connecting pieces, and each pivot piece is arranged between one pair of the connecting pieces.

Preferably, each of the pivot members is substantially in the shape of a bobbin and has a shaft portion and two end pieces located at two ends of the shaft portion, and a space between the two end pieces is used for the flange of the two pipe fittings to be embedded and abutted.

Preferably, the first portion of the positioning mechanism includes a body and a pressing rod, the body is connected to the pressing rod, and two opposite ends of the body are respectively pivoted to the first connecting piece and the second portion.

Preferably, the second portion of the positioning mechanism includes a pivot block and a hook, the pivot block is pivotally connected to the body of the first portion, the hook is located at an end of the pivot block opposite to the body, and the hook is detachably hooked to the second pivot.

Preferably, the second portion of the positioning mechanism further includes a screw member, and the screw member is disposed through the pivot block and the hook member to adjustably connect the pivot block and the hook member.

Preferably, the body is substantially in the shape of a U, and the body is provided with at least one first pivot hole and at least one second pivot hole, the first connecting piece is pivoted to the first pivot hole by a pivot, and the second pivot block is pivoted to the second pivot hole.

Preferably, the body includes a bottom surface and two side surfaces, and the two side surfaces respectively form the first pivot hole and the second pivot hole.

Preferably, the pivot is located between the pivot members at opposite ends of the first connecting piece.

Preferably, each connecting piece is a ring-shaped and sleeved on the pivot pieces at two ends thereof.

Therefore, the fastening device provided by the invention can be suitable for pipe fitting flanges with different sizes, can be attached to the shapes of the flanges, and achieves the best positioning effect.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief description will be given below of the drawings required for the embodiments or the technical solutions in the prior art, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a perspective view of the present invention.

Fig. 2 is an exploded perspective view of the present invention.

Fig. 3 and 4 are schematic operation diagrams of the present invention.

Fig. 5 is a perspective view of a second embodiment of the present invention.

Wherein, 10': a chain assembly; 11. 11': connecting sheets; 111: a first connecting piece; 112: a second connecting sheet; 12: a pivot member; 1201: a first pivot member; 1202: a second pivot member; 121: a shaft portion; 122: an end piece; 20: a positioning mechanism; 21: a first portion; 211: a body; 2111: a first pivot hole; 2112: a second pivot hole; 212: a pressure lever; 213: a pivot; 22: a second portion; 221: a pivoting block; 222: a hook member; 223: a screw member; 30: a first pipe member; 31: a flange; 40: a second pipe member; 41: and (4) a flange.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

Referring to fig. 1 to 5, the present invention provides a fastening device for fastening flanges of two pipes, the fastening device includes a chain assembly 10, 10' and a positioning mechanism 20.

The chain assembly 10, 10 ' includes a plurality of connecting plates 11, 11 ' and a plurality of pivot members 12, the connecting plates 11, 11 ' are respectively pivoted with the pivot members 12 in sequence to form a chain, the connecting plate 11 at one end of the chain assembly 10, 10 ' is defined as a first connecting plate 111, the free end of the first connecting plate 111 has a first pivot member 1201, the connecting plate 11 at the other end of the chain assembly 10, 10 ' is defined as a second connecting plate 112, and the free end of the second connecting plate 112 has a second pivot member 1202.

The positioning mechanism 20 comprises a first portion 21 and a second portion 22, the first portion 21 and the second portion 22 are pivotally connected to each other, the first portion 21 is pivotally connected to one of the first pivot member 1201 or the first connecting plate 111, the length direction of the first connecting plate 111 defines a first direction, a connecting line between the pivotally connected position of the first portion 21 and the first pivot member 1201 or the first connecting plate 111 and the pivotally connected position of the first portion 21 and the second portion 22 defines a second direction, the second portion 22 is detachably positioned to the second pivot member 1202, the first portion 21 can pivotally swing between a releasing position and a positioning position relative to the second portion 22, when the first portion 21 is positioned at the positioning position, the first direction and the second direction are parallel or form an included angle smaller than 180 degrees on a side away from the curvature center of the chain assembly 10, 10', when the first portion is positioned at the releasing position, the first direction and the second direction enclose an angle of more than 180 degrees on a side away from the center of curvature of the chain element 10, 10'.

Regarding the chain assembly 10, specifically, the connecting pieces 11 include a plurality of pairs of the connecting pieces 11, each pair of the connecting pieces 11 are disposed side by side at a certain distance and are respectively connected with the adjacent connecting pieces 11, each of the pivot pieces 12 is disposed between one pair of the connecting pieces 11, each of the pivot pieces 12 is generally in a spool shape and has a shaft portion 121 and two end pieces 122 located at two ends of the shaft portion 121, an outer diameter of each of the end pieces 122 is larger than an outer diameter of the shaft portion 121, and a space between the two end pieces 122 is used for flange embedding of the two pipe fittings to abut against.

Regarding the positioning mechanism 20, in the present embodiment, the first portion 21 of the positioning mechanism 20 includes a body 211 and a pressing rod 212, the body 211 is connected to the pressing rod 212, and two opposite ends thereof are respectively pivoted to the first connecting piece 111 and the second portion 22, the second portion 22 of the positioning mechanism 20 includes a pivoting block 221 and a hook 222, the pivoting block 221 is pivoted to the body 211 of the first portion 21, the hook 222 is located at one end of the pivoting block 221 opposite to the body 211, the hook 22 is detachably hooked to the second pivot 1202, more specifically, the body 211 is substantially n-shaped and includes a bottom surface and two side surfaces, the two side surfaces respectively form a first pivoting hole 2111 and a second pivoting hole 2112, the first connecting piece 111 is pivoted to the first pivoting hole 2111 by a pivot 213 (preferably, the position of the pivot 213 is located between the pivot pieces at the two opposite ends of the first connecting piece 111), the pivot block 221 of the second portion 22 is pivoted to the second pivot hole 2112, the second portion 22 of the positioning mechanism 20 further includes a screw 223, the screw 223 penetrates through the pivot block 221 and the hook 222 to adjustably connect the pivot block 221 and the hook 222 with each other (the distance between the pivot block 221 and the hook 222 can be adjusted by screwing the screw 223 to adjust the tightness of the chain assembly 10), and the screw 223 passes through the pivot block 221 and protrudes between the two sides of the body 211.

In practical use, the chain assembly 10 is sleeved on the

adjacent flanges

31 and 41 of a first pipe 30 and a second pipe 40, the hook member 222 is hooked on the second pivot member 1202, and the pressing rod 212 is pressed against the chain assembly 10, so that the hook member 222 can actually hook the second pivot member 1202 and the chain assembly 10 is tensioned, and if the chain assembly is used for pipes with different flange outer diameters, the screw member can be screwed to adjust the distance between the hook member and the pivot block, so that the tightness can be adjusted, and the chain assembly is very convenient.

Referring to fig. 5, another embodiment of the present invention is provided, wherein the connecting plate is ring-shaped and is sleeved on the pivot members at two ends thereof, and the pivot members are sequentially connected by the ring-shaped connecting plates into a chain shape.

By means of the structure, the fastening device provided by the invention can be attached to the outer edge of the flange of the pipe fitting more reliably so as to tightly joint the flange, and the chain-shaped structure has a better fixing effect compared with an annular structure.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fastening device for fastening flanges of two pipes to each other, the fastening device comprising:

a chain component, including plural connecting sheets and plural pivot pieces, the connecting sheets are pivoted with the pivot pieces in sequence to form a chain shape, the connecting sheet at one end of the chain component is defined as a first connecting sheet, the free end of the first connecting sheet is provided with a first pivot piece, the connecting sheet at the other end of the chain component is defined as a second connecting sheet, the free end of the second connecting sheet is provided with a second pivot piece;

a positioning mechanism including a first portion and a second portion pivotally connected to each other, the first portion is pivotally connected to one of the first pivot member or the first connecting piece, the length direction of the first connecting piece defines a first direction, a connecting line between the pivoting position of the first part and one of the first pivoting member or the first connecting sheet and the pivoting position of the first part and the second part defines a second direction, the second part is detachably positioned to the second pivot piece, the first part can pivot and swing between a release position and a positioning position relative to the second part, when the first part is positioned at the positioning position, the first direction and the second direction are parallel or form an included angle of less than 180 degrees with a side away from the curvature center of the chain component, when the first part is positioned at the releasing position, an included angle of more than 180 degrees is formed between the first direction and the second direction at one side far away from the curvature center of the chain component.

2. The fastening device according to claim 1, wherein the connecting pieces include a plurality of pairs of the connecting pieces, each pair of the connecting pieces being arranged side by side at a predetermined distance from each other to be connected to the adjacent connecting pieces, respectively, each of the pivot members being provided between one pair of the connecting pieces.

3. The fastening device according to claim 2, wherein each of the pivot members is substantially in the shape of a bobbin and has a shaft portion and two end pieces at two ends of the shaft portion, and a space between the two end pieces is used for the flanges of the two pipes to be inserted and abutted.

4. The fastening device according to claim 1, wherein the first portion of the positioning mechanism includes a body and a pressing rod, the body is connected to the pressing rod, and two opposite ends of the body are pivotally connected to the first connecting piece and the second portion, respectively.

5. The fastening device according to claim 4, wherein the second portion of the positioning mechanism includes a pivot block pivotally connected to the body of the first portion and a hook member at an end of the pivot block opposite to the body, the hook member being detachably hooked to the second pivot member.

6. The fastening device according to claim 5, wherein the second portion of the positioning mechanism further comprises a screw member, the screw member is disposed through the pivot block and the hook member to adjustably connect the pivot block and the hook member to each other.

7. The fastening device according to claim 5, wherein the body is substantially U-shaped, and has at least a first pivot hole and at least a second pivot hole, the first connecting piece being pivotally connected to the first pivot hole by a pivot, and the second pivot block being pivotally connected to the second pivot hole.

8. The fastening device according to claim 7, wherein the body includes a bottom surface and two side surfaces, the two side surfaces respectively forming the first pivot hole and the second pivot hole.

9. The fastening device of claim 8, wherein the pivot location is between the pivot members at opposite ends of the first connecting piece.

10. The fastening device according to claim 1, wherein each connecting piece is a ring-shaped and is disposed around the pivot members at both ends thereof.