CN215170307U

CN215170307U - An exhaust pipe connection device

Info

Publication number: CN215170307U
Application number: CN202121057535.4U
Authority: CN
Inventors: 陶汉国; 冯曦; 杜建波
Original assignee: Tianjin Swarc Automotive Research Laboratory Co ltd
Current assignee: Tianjin Swarc Automotive Research Laboratory Co ltd
Priority date: 2021-05-18
Filing date: 2021-05-18
Publication date: 2021-12-14
Anticipated expiration: 2031-05-18

Abstract

The invention provides an exhaust pipeline connecting device, which comprises a hoop body, wherein a tail ear ring is arranged on the outer side of the tail end of the hoop body, a head ear ring is arranged at the head end of the hoop body, and a butt joint part of the hoop body, which is externally provided with the head ear ring, extends into the inner side of the tail end, so that the hoop body is lapped end to end; the tightness of the hoop body is adjusted through the connecting assembly between the head ear ring and the tail ear ring, and the hoop body is kept in a holding state; the inner wall of the hoop body is provided with a pressing pad. The exhaust pipe fixing device is reasonable in structural design, the distance between the head earring and the tail earring is adjusted by the connecting assembly, the diameter of the inner ring of the hoop body is further adjusted to meet the fixing requirement of the exhaust pipe, the universality is good, the operation is simple and convenient, and the connection and fixing reliability is high.

Description

Exhaust pipeline connecting device

Technical Field

The invention belongs to the technical field of internal combustion engine equipment, and particularly relates to an exhaust pipeline connecting device.

Background

In the exhaust gas test research of internal combustion engines, the connection of an exhaust pipeline is usually fixed by flange connection or by clamping of an existing clamp. For flange connection, flanges are required to be fixed at the tail ends of two connected exhaust pipelines, the flanges on the two sides are butted together, a sealing gasket is arranged between the flanges, then the two flanges are connected and fixed by bolts, and further the connection of the two exhaust pipelines is realized. When the two pipelines are connected by the clamp, the clamp and the outer wall of the pipeline are not easy to seal, and air leakage is easy. Therefore, there is a need for an improved connection device for piping.

Disclosure of Invention

In view of the above, the present invention provides an exhaust pipe connecting device to overcome the drawbacks of the prior art.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

an exhaust pipeline connecting device comprises a hoop body, wherein a tail ear ring is arranged on the outer side of the tail end of the hoop body, a head ear ring is arranged at the head end of the hoop body, and a butt joint part of the head ear ring, which is arranged outside the hoop body, extends into the inner side of the tail end, so that the hoop body is in head-to-tail lap joint; the tightness of the hoop body is adjusted through the connecting assembly between the head ear ring and the tail ear ring, and the hoop body is kept in a holding state; the inner wall of the hoop body is provided with a pressing pad.

Further, the pressing pad comprises a main body and a transition head which is arranged on the main body and is externally provided with a butting part.

Further, the transition head comprises a basic part and a head part, the head part is triangular, the thickness of the basic part is larger than that of the main body, the inner surface of the basic part and the inner surface of the main body are in smooth transition, and the inner positioning surface of the head part is attached to the outer side surface of the head end of the hoop body.

Furthermore, the hoop body is provided with inward raised limiting rings at two ends along the axial direction, and the pressing pad is arranged between the two limiting rings.

Furthermore, the outer surface of the pressing pad protrudes out of the outer surface of the limiting ring by 0.2-1.5 mm.

Furthermore, the outer wall of the pressing pad is provided with an installation boss, and the inner wall of the pressing pad is provided with an annular positioning table.

Furthermore, the inner wall of the pressing pad is provided with an annular positioning table.

Further, the connecting assembly comprises a connecting bolt, and the connecting bolt sequentially penetrates through the tail lug ring and the head lug ring and is locked by a nut.

Furthermore, the pressing pad is a graphite pad or a rubber pad.

Compared with the prior art, the invention has the following advantages:

the connecting device has the advantages that the structural design is reasonable, the process of welding flanges or flanges with corresponding pipe diameters in the past is omitted when the connecting device is used for connecting exhaust pipes, meanwhile, the connecting device has a certain pipe diameter application range, the problem of pipe diameters is not considered, the connecting efficiency is high, the construction cost is low, the distance between the head ear ring and the tail ear ring is adjusted by the connecting assembly, the diameter of the inner ring of the hoop body is further adjusted, the fixing requirement of the exhaust pipes is met, the universality is good, the operation is simple and convenient, and the connecting and fixing reliability is high.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the invention without limitation. In the drawings:

FIG. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic view of an embodiment of the present invention with a compression pad;

FIG. 3 is a schematic side view of an embodiment of the present invention with a pressing pad;

FIG. 4 is an enlarged view of the structure of FIG. 3 at A;

FIG. 5 is a schematic view of a transition head in an embodiment of the present invention;

FIG. 6 is a schematic view of the clamp body of the present invention with limiting rings at two ends;

FIG. 7 is a schematic view of a compression pad in an embodiment of the invention;

FIG. 8 is a schematic cross-sectional view of a compression pad in an embodiment of the invention;

FIG. 9 is a schematic cross-sectional view of a compression pad with a mounting boss according to an embodiment of the present invention;

FIG. 10 is a schematic view of an embodiment of the present invention with an auxiliary connection board;

fig. 11 is a schematic view illustrating the auxiliary fixing member provided on the auxiliary connecting plate of the hoop body in the embodiment of the present invention.

Description of reference numerals:

1-a ferrule body; 2-tail earring; 3-a head earring; 4-a connecting assembly; 5-a compression pad; 6-a body; 7-a transition head; 8-basic moiety; 9-a head; 10-inner positioning surface; 11-a positioning table; 12-mounting a boss; 13-connecting bolts; 14-a nut; 15-auxiliary connection plate; 16-auxiliary fixing parts; 17-a spacing ring; 18-tail end; 19-head end.

Detailed Description

It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which are merely for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified.

In the description of the invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "connected" are to be construed broadly, e.g. as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the creation of the present invention can be understood by those of ordinary skill in the art through specific situations.

The invention will be described in detail with reference to the following embodiments with reference to the attached drawings.

An exhaust pipeline connecting device, as shown in fig. 1 to 11, comprises a hoop body 1, a tail ear ring 2 is arranged outside a tail end 18 of the hoop body, a head ear ring 3 is arranged at a head end 19 of the hoop body, and a butt joint part of the hoop body, which is externally provided with the head ear ring, extends into the inner side of the tail end, so that the hoop body is overlapped end to end; the tightness of the hoop body is adjusted through the connecting component 4 between the head ear ring and the tail ear ring, and the hoop body is kept in a holding state; the inner wall of the hoop body is provided with a pressing pad 5. Generally, the pressing pad is a graphite pad or a rubber pad.

The compression pad comprises a main body 6 and a transition head 7 which is arranged on the main body and externally extends out of the butt joint part. Because the length of the compressing pad is slightly longer than that of the hoop body and the compressing pad is tightly attached to the hoop body, an effective sealing effect can be achieved between the hoop body and a straight pipe to be connected, and the slightly longer compressing pad (transition head) can solve the sealing problem of the joint of the head end and the tail end of the hoop body under the action of the compressing force, so that the sealing performance of pipeline connection is effectively improved.

The transition head comprises a basic part 8 and a head part 9, wherein the head part is triangular, the thickness of the basic part is larger than that of the main body, the inner surface of the basic part and the inner surface of the main body are in smooth transition, and an inner positioning surface 10 of the head part is attached to the outer side surface of the head end of the hoop body.

Preferably, the inner wall of the pressing pad is provided with an annular positioning table 11, when pipelines on two sides are butted, the tail ends of the pipelines respectively abut against the positioning table, the positioning table not only plays a role in positioning to ensure that the pipelines on two sides are butted in place, but also plays a role in sealing the butt joint between the pipelines.

In an alternative embodiment, the two ends of the hoop body along the axial direction are respectively provided with an inward convex limiting ring 17, the pressing pad is arranged between the two limiting rings, in the scheme, the outer wall of the pressing pad is provided with a mounting boss 12, and the inner wall of the pressing pad is provided with an annular positioning table. Usually, the outer surface of the pressing pad protrudes 0.2-1.5mm from the outer surface of the spacing ring to meet the sealing requirement.

The above-mentioned coupling assembly comprises a coupling bolt 13 which passes through the tail earring and the head earring in sequence and is locked by a nut 14. Through revolving the nut soon, adjust and hoop the body elasticity to the different pipeline diameters of adaptation, the preferred spring steel preparation that adopts of hoop body, self have certain elasticity, adjust and keep the inner circle diameter of hoop body by coupling assembling, play the effect of pressing from both sides tight pipeline, guarantee that both sides pipeline is fixed firm, and the leakproofness is good, no seepage.

In an alternative embodiment, in order to further improve the stability and reliability of the fixed pipeline, a plurality of sets of auxiliary connecting plates 15 may be correspondingly arranged on two sides of the hoop body, two auxiliary connecting plates in each set are symmetrically arranged, an auxiliary fixing member 16 may be disposed on the auxiliary connecting plates, after the hoop body is fixed by the connecting member, the auxiliary fixing member is screwed to achieve the auxiliary fixing and supporting functions. In addition, according to actual needs, the auxiliary connecting plates on the two sides of the hoop body can be respectively fixed on the pipelines on the corresponding sides in a spot welding manner, so that a firm fixing effect is achieved, and the hoop body is guaranteed not to be separated from the pipelines on the two sides.

During the use, at first adjust the screw to enough pine but still keep the state that head end and tail end link up, make the loose port of overlapping at one side blast pipe of hoop body, then embolia the staple bolt with the opposite side blast pipe that needs to connect, after the equal cartridge of hoop body is gone into to the blast pipe of both sides, utilize coupling assembling to adjust the staple bolt elasticity immediately, promptly, make staple bolt chucking blast pipe to both sides blast pipe all unable rotation through tightening up the nut.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the invention, so that any modifications, equivalents, improvements and the like, which are within the spirit and principle of the present invention, should be included in the scope of the present invention.

Claims

1. An exhaust pipe connection device, characterized in that: it comprises a hoop body, is provided with a tail earring on the outside of the rear end of the hoop body, is provided with a head earring at the head end of the hoop body, and probes out the butt portion of the head earring outside the hoop body Extend into the inner side of the tail end to make the hoop body overlap end to end; adjust the tightness of the hoop body through the connecting component between the head earring and the tail earring, and keep the hoop body in a tight state; the inner wall of the hoop body is provided with a compression pad .

2 . The exhaust pipeline connection device according to claim 1 , wherein the pressing pad comprises a main body and a transition head on the main body protruding from the butt joint. 3 .

3 . The exhaust pipe connection device according to claim 2 , wherein the transition head comprises a base part and a head part, the head part is in the shape of a triangle, the thickness of the base part is greater than the thickness of the main body, and the inner part of the base part is in the shape of a triangle. 4 . The surface and the inner surface of the main body smoothly transition, and the inner positioning surface of the head is fitted with the outer surface of the head end of the hoop body.

4 . The exhaust pipeline connection device according to claim 1 , wherein the two ends of the hoop body along the axial direction are respectively provided with inwardly protruding limit rings, and the compression pad Installed between the two limit rings.

5 . The exhaust pipeline connection device according to claim 4 , wherein the outer surface of the pressing pad protrudes from the outer surface of the limit ring by 0.2-1.5 mm. 6 .

6 . The exhaust pipeline connection device according to claim 4 , wherein the outer wall of the pressing pad is provided with a mounting boss, and the inner wall of the pressing pad is provided with an annular positioning platform. 7 .

7 . The exhaust pipeline connection device according to claim 1 , wherein the inner wall of the pressing pad is provided with an annular positioning platform. 8 .

8 . The exhaust pipe connection device according to claim 1 , wherein the connection component comprises a connection bolt, the connection bolt passes through the tail earring and the head earring in sequence, and is locked by a nut. 9 .

9 . The exhaust pipeline connection device according to claim 1 , wherein the pressing pad is a graphite pad or a rubber pad. 10 .