CN116336274A

CN116336274A - Pipeline clamping sleeve

Info

Publication number: CN116336274A
Application number: CN202310613654.0A
Authority: CN
Inventors: 付海平; 付道明; 刘建; 林小山; 黄军; 冉朝
Original assignee: Ningbo Economic And Technological Development Zone Hengyang Machinery Co ltd
Current assignee: Ningbo Economic And Technological Development Zone Hengyang Machinery Co ltd
Priority date: 2023-05-29
Filing date: 2023-05-29
Publication date: 2023-06-27

Abstract

The pipeline clamping sleeve comprises a fastening piece, an outer clamping sleeve and an inner clamping sleeve, wherein the outer clamping sleeve and the inner clamping sleeve are both cylindrical, a first slot is formed in the side wall of the inner clamping sleeve along the axial direction, an inner main side and an inner secondary side are respectively arranged on two sides of the first slot, an insert is arranged on the inner main side, and an embedded groove is formed in the inner secondary side; the lateral wall that the outer jacket was equipped with along axial second fluting and the both sides of second fluting are outer major side and outer minor side respectively, and the inner jacket is used for cup jointing to the junction of two pipelines, and the outer jacket cup joints in the outside of inner jacket and makes first fluting and second fluting stagger the setting, and the fastener is connected between outer major side and outer minor side and is used for realizing tightening up to the second fluting to make outer jacket promote the corresponding caulking groove of inserts embedding. Above-mentioned scheme has designed to jacket and inner jacket, has realized the complete seal in the middle part of first fluting through going into the caulking groove with the inserts card to make the leakproofness of pipeline handing-over department good, joint strength high, installation and change convenient and repeatedly usable.

Description

Pipeline clamping sleeve

Technical Field

The invention relates to the technical field of pipeline connecting devices, in particular to a pipeline clamping sleeve.

Background

The automobile exhaust pipe is used as an important component part of an exhaust system, and the connection reliability of the automobile exhaust pipe directly influences the normal operation of the exhaust system. The traditional hot end pipeline adopts metal flange connection, and because the hot end pipeline has the deformation of expansion with heat and contraction with cold, the juncture between the pipeline often can appear the gap and lead to the gas leakage problem. Although the high-precision flange can ensure the tightness of the joint of the pipelines, the flange has higher production cost and higher requirement on assembly precision; the common flange has larger manufacturing and installation errors, so that the sealing performance of the joint of the pipelines is difficult to ensure, and frequent maintenance is required. In order to reduce the connection difficulty and the production cost of the front and rear exhaust pipes of the hot end, improve the installation convenience and the installation reliability of the exhaust pipes, ensure that the performance of the exhaust pipes meets the design requirement, reduce the subsequent maintenance and replacement cost, and urgently need an automobile hot end exhaust pipe clamping sleeve which can realize effective sealing of the joint of the pipes and has high connection strength and convenient disassembly and assembly.

Disclosure of Invention

The invention aims to provide the pipeline clamping sleeve which has good sealing property at the joint of the pipeline, high connection strength, convenient disassembly and assembly and reusability.

In order to solve the problems, the invention provides a pipeline clamping sleeve, which comprises a fastener, an outer clamping sleeve and an inner clamping sleeve, wherein the outer clamping sleeve and the inner clamping sleeve are both cylindrical, a first slot is formed in the side wall of the inner clamping sleeve along the axial direction, an inner main side edge and an inner secondary side edge are respectively arranged on two sides of the first slot, inserts are respectively arranged on the left part and the right part of the inner main side edge, and caulking grooves are respectively arranged on the left part and the right part of the inner secondary side edge; the lateral wall that the outer cover was equipped with along axial second fluting and the both sides of second fluting are outer major side and outer minor side respectively, the interior cover is used for cup jointing to the junction of two pipelines and makes the junction be located between two caulking grooves, the outer cover cup joint in the outside of interior cover makes first fluting and second fluting stagger the setting, the fastener is connected between outer major side and outer minor side and is used for realizing to the tightening of second fluting, so that the outer cover promotes the inserts embedding and seal corresponding caulking grooves.

When the scheme is used, the inner jacket is firstly installed at the joint of the pipelines, and the two caulking grooves of the inner jacket are respectively positioned at two sides of the joint of the pipelines. Because of the wrapping effect of the inner jacket on the pipeline, the air leakage at the joint of the pipelines can only flow outwards through the middle part of the first slot; when the outer jacket is sleeved to the inner jacket and the second slot is tightened by the fastener, the inserts are clamped into the corresponding caulking grooves under the pushing action of the outer jacket to realize the sealing of the left side and the right side of the first slot, and meanwhile, the first slot and the second slot are staggered in the circumferential direction, namely the outer side of the first slot is sealed by the outer jacket, so that the area of the first slot between the two inserts is completely sealed, and the effective sealing function of the inner jacket on the joint of the pipeline is ensured; meanwhile, as a double-layer nested structure is formed between the outer jacket and the inner jacket, high-strength connection of the joint of the pipelines is realized, and when disassembly and maintenance are needed, the clamping effect of the outer jacket on the inner jacket can be removed only by loosening the fastener, so that the outer jacket or the inner jacket can be replaced conveniently, the outer jacket or the inner jacket can be reused, and the practicability is good.

Preferably, the outer main side is provided with a main clamping ear, and the main clamping ear is provided with a main ear hole; the outer secondary side is equipped with the secondary ear, the secondary ear is equipped with the secondary earhole, main earhole sets up with the secondary earhole is relative, the fastener is connected between main earhole and secondary earhole to adjust the interval of main ear and secondary ear through the fastener, can realize tightening up or loosening the second fluting.

Preferably, the fastener comprises a bolt and a nut, the nut end of the bolt is positioned at the outer side of the main clamping lug, and the screw rod end of the bolt sequentially penetrates through the main lug hole and the secondary lug hole and then is connected with the nut, so that the adjustment is simple and convenient.

Preferably, the shape of the main ear hole is regular polygon, an embedding part is arranged between the nut end and the screw end of the bolt, and the cross section shape of the embedding part is the same as that of the main ear hole; a gasket is arranged between the nut and the secondary clamping lug, the circumferential positioning of the bolt is realized by inserting the scarf joint part into the main lug hole during assembly, and then the nut can be assembled to the screw rod end of the bolt, so that the assembly is more convenient; the setting of gasket then can promote the fastener and to the tight effect of fixing of main card ear and secondary card ear, effectively prevents not hard up problem.

Preferably, the side edges of the main clamping lugs and the side edges of the secondary clamping lugs are respectively provided with a reinforcing rib, so that the structural strength of the main clamping lugs and the secondary clamping lugs is improved.

Preferably, the two main clamping lugs are respectively positioned at the left part and the right part of the outer main side edge, and the axial positions of the two main clamping lugs relative to the outer jacket are the same as the axial positions of the two inserts relative to the inner jacket; the secondary clamping lugs are arranged at the left part and the right part of the outer secondary side edge respectively, and are arranged opposite to the two main clamping lugs respectively, so that the clamping effect of the outer jacket on the inner jacket is improved, and the outer jacket is ensured to better push the insert to be clamped into the caulking groove.

Preferably, the inner side wall of the outer jacket is provided with a positioning part, the outer side wall of the inner jacket is provided with a limiting part, and the limiting part is used for being abutted to the positioning part to realize the relative positioning of the outer jacket and the inner jacket, so that the axial and circumferential positioning between the outer jacket and the inner jacket is realized.

Preferably, the positioning part is in a hole shape, the limiting part protrudes out of the outer side wall of the inner jacket, and the limiting part is used for being inserted into the positioning part, so that the cooperation between the limiting part and the positioning part is more convenient.

As the preference, the left side and the right side of inserts are the shell fragment, and two shell fragments intervals of same inserts set up and all are protruding towards corresponding caulking groove, and two shell fragments of same inserts are used for the both sides cell wall of butt to corresponding caulking groove respectively for form interference fit between inserts and the caulking groove, thereby realize more compact connection between inserts and the caulking groove, promote the gas tightness of the region that first fluting is located between two inserts.

As the preference, two shell fragments of same inserts are parallel to each other, and be connected with "S" shape elasticity stiffening beam between two shell fragments of same inserts to realize the effect of supporting pushing against two shell fragments of same inserts through elasticity stiffening beam, guarantee that two shell fragments of same inserts are more inseparable with corresponding caulking groove' S connection.

Drawings

FIG. 1 is an exploded view of a pipe clamping sleeve;

FIG. 2 is a schematic illustration of the installation of a pipe clamping sleeve (broken lines in the drawing represent partial cutaway of the outer jacket);

FIG. 3 is a schematic view of the front face of the outer jacket of a pipe clamping sleeve;

FIG. 4 is a schematic view of the reverse side of the outer jacket of a pipe clamping sleeve;

fig. 5 is a schematic view of an inner jacket of a pipe clamping sleeve.

The reference numerals are used to describe the components,

1. an outer jacket; 11. a second slot; 12. a main clamping ear; 13. a main ear hole; 14. sub-clamping ears; 15. a secondary earhole; 16. reinforcing ribs; 17. a positioning part; 2. an inner jacket; 21. a first slot; 22. an insert; 221. a spring plate; 23. a caulking groove; 24. a limit part; 25. an elastic stiffening beam; 31. a bolt; 32. a nut; 33. an engagement portion; 34. a gasket.

Detailed Description

In order that the above objects, features and advantages of the present invention will be readily apparent, a more particular description of the invention briefly described above will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings, in which, as illustrated in the appended drawings, it is to be understood that the embodiments described are merely some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention. It should be further noted that, in the embodiments of the present invention, all directional indications (such as up, down, left, right, front, back, inner, and outer) are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indication is correspondingly changed.

Referring to fig. 1-5, a pipe clamping sleeve provided by an embodiment of the present invention includes a fastener, a cylindrical outer jacket 1 and an inner jacket 2, wherein a first slot 21 is formed on a side wall of the inner jacket 2 along an axial direction, two sides of the first slot 21 are respectively an inner primary side and an inner secondary side, left and right parts of the inner primary side are respectively provided with an insert 22, and left and right parts of the inner secondary side are respectively provided with an insert groove 23; the lateral wall of the outer jacket 1 is provided with a second slot 11 along the axial direction, two sides of the second slot 11 are respectively an outer main side and an outer secondary side, the inner jacket 2 is used for sleeving a joint part of two pipelines and enabling the joint part to be positioned between two caulking grooves 23, the outer jacket 1 is sleeved outside the inner jacket 2 and enabling the first slot 21 and the second slot 11 to be staggered, and a fastener is connected between the outer main side and the outer secondary side and used for tightening the second slot 11 so that the outer jacket 1 pushes the inserts 22 to be embedded into and close the corresponding caulking grooves 23.

When the scheme is used, the inner jacket 2 is firstly installed at the joint of the pipelines, and the two caulking grooves 23 of the inner jacket 2 are respectively positioned at two sides of the joint of the pipelines. Because of the wrapping effect of the inner jacket 2 on the pipeline, the air leakage at the joint of the pipelines can only flow out from the middle part of the first slot 21; when the outer jacket 1 is sleeved to the inner jacket 2 and the second slot 11 is tightened by the fastener, the insert 22 is clamped into the corresponding caulking groove 23 under the pushing action of the outer jacket 1 to realize the sealing of the left side and the right side of the first slot 21, and meanwhile, the first slot 21 and the second slot 11 are staggered in the circumferential direction, namely the outer side of the first slot 21 is sealed by the outer jacket 1, so that the area of the first slot 21 between the two inserts 22 is completely sealed, and the effective sealing function of the joint of the pipe of the inner jacket 2 is ensured; meanwhile, as the double-layer nested structure is formed between the outer jacket 1 and the inner jacket 2, high-strength connection of the joint of the pipelines is realized, and when disassembly and maintenance are needed, the clamping effect of the outer jacket 1 on the inner jacket 2 can be removed only by loosening the fastener, so that the outer jacket 1 or the inner jacket 2 can be replaced conveniently, and the double-layer nested structure can be reused and has good practicability. In addition, the scheme realizes the sealing of the left side and the right side of the first slot 21 through the scarf joint action of the insert 22 and the caulking groove 23, so that whether the first slot 21 is completely closed or not does not influence the sealing property, even if the diameter of a pipeline is slightly larger than that of the inner jacket 2 so that the first slot 21 is in an unclosed state, the sealing effect of the left side and the right side of the first slot 21 can be ensured as long as the insert 22 can scarf-joint and seal the caulking groove 23, and the universality is better.

In the embodiment, the outer main side is provided with a convex main clamping lug 12, and the main clamping lug 12 is provided with a main lug hole 13; the outer secondary side is provided with a convex secondary clamping lug 14, and the secondary clamping lug 14 is provided with a secondary lug hole 15. The main clamping lug 12 and the secondary clamping lug 14 are sheet-shaped and are parallel to each other, the main lug hole 13 and the secondary lug hole 15 are oppositely arranged, and the fastening piece is connected between the main lug hole 13 and the secondary lug hole 15, so that the second slotting 11 can be tightened or loosened by adjusting the distance between the main clamping lug 12 and the secondary clamping lug 14 through the fastening piece. Further, the side edges of the main clamping lug 12 and the side edges of the secondary clamping lug 14 are respectively provided with a reinforcing rib 16, so that the structural strength of the main clamping lug 12 and the secondary clamping lug 14 is improved. Wherein the reinforcing ribs 16 on the left side and the right side of the main clamping lug 12 are curled edges along the direction away from the secondary clamping lug 14, and the reinforcing rib 16 on the top side of the main clamping lug 12 is curled edges along the direction close to the secondary clamping lug 14; the reinforcing ribs 16 on the left side edge and the right side edge of the secondary clamping lug 14 are curled edges along the direction far away from the main clamping lug 12, and the reinforcing ribs 16 on the top side edge of the secondary clamping lug 14 are curled edges along the direction close to the main clamping lug 12, so that when the main clamping lug 12 and the secondary clamping lug 14 are mutually close to each other through the fastener, the reinforcing ribs 16 on the top side edges of the main clamping lug 12 and the secondary clamping lug 14 can be mutually contacted first, the connection strength among the fastener, the main clamping lug 12 and the secondary clamping lug 14 is improved, and the main clamping lug 12 and the secondary clamping lug 14 cannot deform when the fastener adjusts the distance between the main clamping lug 12 and the secondary clamping lug 14.

In this embodiment, the fastener includes a bolt 31 and a nut 32, where the nut end of the bolt 31 is located on the side of the main clamping ear 12 away from the secondary clamping ear 14, the nut 32 is located on the side of the secondary clamping ear 14 away from the main clamping ear 12, and the screw end of the bolt 31 sequentially passes through the main ear hole 13 and the secondary ear hole 15 and then is connected with the nut 32, so that the adjustment is simple and convenient. Further, the main ear hole 13 is in a regular polygon shape, an engagement portion 33 is arranged between a nut end and a screw end of the bolt 31, and the cross section of the engagement portion 33 is the same as that of the main ear hole 13; a gasket 34 is arranged between the nut 32 and the secondary clamping lug 14, the circumferential positioning of the bolt 31 is realized by inserting the scarf joint part 33 into the main lug hole 13 during assembly, and then the nut 32 can be assembled to the screw rod end of the bolt 31, so that the assembly is more convenient; the gasket 34 can promote the fastening action of the fastener on the main clamping lug 12 and the secondary clamping lug 14, so that the loosening problem is effectively prevented. In the present embodiment, the main ear hole 13 is square, and the caulking portion 33 is square having the same size as the main ear hole 13.

As an optimization of the above embodiment, the two main clamping lugs 12 are respectively positioned at the left part and the right part of the outer main side edge, and the axial positions of the two main clamping lugs 12 relative to the outer jacket 1 are the same as the axial positions of the two inserts 22 relative to the inner jacket 2; the two secondary clamping lugs 14 are respectively positioned at the left part and the right part of the outer secondary side edge, and the two secondary clamping lugs 14 are respectively opposite to the two main clamping lugs 12 and are arranged in parallel, so that the clamping effect of the outer jacket 1 on the inner jacket 2 is improved, and the outer jacket 1 is ensured to better push the insert 22 to be clamped into the caulking groove 23.

As an optimization of the above embodiment, the inner side wall of the outer jacket 1 is provided with a positioning portion 17, the outer side wall of the inner jacket 2 is provided with a limiting portion 24, and the limiting portion 24 is used for abutting against the positioning portion 17 to achieve relative positioning of the outer jacket 1 and the inner jacket 2, thereby achieving axial and circumferential positioning between the outer jacket 1 and the inner jacket 2. It should be understood that the specific structure or number of the positioning portions 17 and the limiting portions 24 are not limited, as long as the relative positioning of the outer jacket 1 and the inner jacket 2 can be achieved. For example, as shown in fig. 4 and 5, the positioning portions 17 are hole-shaped, and the number of the positioning portions 17 is two and are respectively positioned at the left and right parts of the inner side wall of the outer jacket 1; the limiting parts 24 protrude out of the outer side wall of the inner jacket 2, and the number of the limiting parts 24 is two and are respectively positioned at the left part and the right part of the outer side wall of the inner jacket 2; the limiting part 24 positioned at the left part is used for being abutted to the positioning part 17 positioned at the left part, the limiting part 24 positioned at the right part is used for being abutted to the positioning part 17 positioned at the right part, and the convenience in cooperation between the limiting part 24 and the positioning part 17 is ensured.

In this embodiment, the left side and the right side of the insert 22 are the elastic pieces 221, and the two elastic pieces 221 of the same insert 22 are disposed at intervals and each protrude toward the corresponding caulking groove 23. In the same insert 22, the distance between the left side edge of the left elastic piece 221 and the right side edge of the right elastic piece 221 is slightly larger than the groove width of the corresponding caulking groove 23, so that the two elastic pieces 221 of the same insert 22 can be respectively abutted to the left groove wall and the right groove wall of the corresponding caulking groove 23, interference fit is formed between the insert 22 and the caulking groove 23, more compact connection between the insert 22 and the caulking groove 23 is achieved, and the air tightness of the area where the first groove is located between the two inserts 22 is improved. Further, the two elastic pieces 221 of the same insert 22 are parallel to each other, and an S-shaped elastic reinforcement beam 25 is connected between the two elastic pieces 221 of the same insert 22, so that the pushing action of the two elastic pieces 221 of the same insert 22 is realized through the elastic reinforcement beam 25, and the connection between the two elastic pieces 221 of the same insert 22 and the corresponding caulking groove 23 is ensured to be more compact.

Although the present disclosure is described above, the scope of protection of the present disclosure is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the scope of the invention.

Claims

1. The pipeline clamping sleeve is characterized by comprising a fastening piece, an outer clamping sleeve (1) and an inner clamping sleeve (2), wherein the outer clamping sleeve and the inner clamping sleeve are both cylindrical, a first slot (21) is formed in the side wall of the inner clamping sleeve (2) along the axial direction, an inner main side edge and an inner secondary side edge are respectively arranged on two sides of the first slot (21), an insert (22) is respectively arranged on the left part and the right part of the inner main side edge, and an caulking groove (23) is respectively arranged on the left part and the right part of the inner secondary side edge; the lateral wall that presss from both sides cover (1) is equipped with along axial second fluting (11) and the both sides of second fluting (11) are outside major side and outside minor side respectively, interior clamp cover (2) are used for cup jointing to the junction of two pipelines and make the junction be located between two caulking grooves (23), outer clamp cover (1) cup joint in the outside of interior clamp cover (2) and make first fluting (21) and second fluting (11) stagger the setting, the fastener is connected between outside major side and outside minor side and is used for realizing to tighten up of second fluting (11), so that outer clamp cover (1) promotes inserts (22) embedding and seals corresponding caulking groove (23).

2. A pipe clamping sleeve according to claim 1, characterized in that the outer main side is provided with a main clamping ear (12), the main clamping ear (12) being provided with a main ear hole (13); the outer secondary side is provided with a secondary clamping lug (14), the secondary clamping lug (14) is provided with a secondary earhole (15), the main earhole (13) and the secondary earhole (15) are oppositely arranged, and the fastener is connected between the main earhole (13) and the secondary earhole (15).

3. A pipe clamping sleeve according to claim 2, wherein the fastener comprises a bolt (31) and a nut (32), the nut end of the bolt (31) is located at the outer side of the main clamping lug (12), and the screw end of the bolt (31) sequentially passes through the main lug hole (13) and the secondary lug hole (15) and then is connected with the nut (32).

4. A pipe clamping sleeve according to claim 3, characterized in that the main ear (13) has a regular polygonal shape, an engagement portion (33) is provided between the nut end and the screw end of the bolt (31), and the cross-sectional shape of the engagement portion (33) is the same as that of the main ear (13); a gasket (34) is arranged between the nut (32) and the secondary clamping lug (14).

5. A pipe clamping sleeve according to claim 2, characterized in that the side edges of the main lugs (12) and the side edges of the secondary lugs (14) are provided with reinforcing ribs (16).

6. A pipe clamping sleeve according to claim 2, wherein the number of the main clamping lugs (12) is two, and the main clamping lugs are respectively positioned at the left part and the right part of the outer main side edge, and the axial positions of the two main clamping lugs (12) relative to the outer jacket (1) are the same as the axial positions of the two inserts (22) relative to the inner jacket (2); the number of the secondary clamping lugs (14) is two, the secondary clamping lugs are respectively positioned at the left part and the right part of the outer secondary side edge, and the two secondary clamping lugs (14) are respectively opposite to the two main clamping lugs (12).

7. A pipe clamping sleeve according to claim 1, characterized in that the inner side wall of the outer jacket (1) is provided with a positioning portion (17), the outer side wall of the inner jacket (2) is provided with a limiting portion (24), and the limiting portion (24) is used for abutting against the positioning portion (17) to achieve relative positioning of the outer jacket (1) and the inner jacket (2).

8. A pipe clamping sleeve according to claim 7, characterized in that the positioning portion (17) is hole-shaped, the limiting portion (24) protrudes from the outer side wall of the inner jacket (2), and the limiting portion (24) is used for being inserted into the positioning portion (17).

9. A pipe clamping sleeve according to claim 1, wherein the left and right sides of the insert (22) are spring plates (221), the two spring plates (221) of the same insert (22) are arranged at intervals and are protruded towards the corresponding caulking groove (23), and the two spring plates (221) of the same insert (22) are used for being respectively abutted to two side groove walls of the corresponding caulking groove (23), so that interference fit is formed between the insert (22) and the caulking groove (23).

10. A pipe clamping sleeve according to claim 9, characterized in that the two spring plates (221) of the same insert (22) are parallel to each other, and that an "S" -shaped elastic stiffening beam (25) is connected between the two spring plates (221) of the same insert (22).