CN104455829B - Connecting pipe assembly for large automobile chassis - Google Patents

Abstract

The invention discloses a connecting elbow fitting assembly for a large-scale automobile chassis, comprising a joint body, a sleeve, and a matching straight-through pipe. The joint body includes a ferrule pipe section, a straight pipe section, and an elbow pipe section. , bent pipe section and straight pipe section; the ferrule pipe section is matched with the kit, and the straight pipe section is matched with the supporting straight pipe; Lining core: a first inner cavity, a first stepped hole, and a second stepped hole are opened in the tube section of the joint body. One end of the lining core is provided with a large end face, and the large end face is matched with the first stepped hole. The invention has the characteristics of reliable connection and good sealing performance, simple structure, convenient use, no gaskets, no welding, material saving, good performance of repeated assembly and disassembly; the reliability of sealing can be guaranteed, the joint part is not easy to leak, and the service life is long .

Description

A connecting pipe fitting assembly for a large automobile chassis

【Technical field】

The invention relates to the technical field of connecting pipe fittings, in particular to the technical field of connecting pipe fitting assemblies for large automobile chassis.

【Background technique】

Pipe fittings are a general term for components that play the roles of connection, control, direction change, diversion, sealing, support, etc. in the pipeline system. They are an important part of connecting pipes to pipelines. , flange fittings and welded fittings four categories. Pipe fittings are mostly made of the same material as pipes, including elbows, flanges, tees, crosses, and reducers.

Pipe fittings are generally used to transmit fluid. In order to prevent fluid leakage, it is generally required to be seamlessly connected between pipe fittings. Install or wrap sealing material at the joint, when the pipe end is threaded, there must be a matching device, and when the flange is connected, many accessories are required.

Nowadays, ferrule-type joints are usually used for connecting pipe fittings for large-scale automobile chassis. The connection principle of ferrule-type pipe joints is that the ferrule is gradually cut into the outer wall of the steel pipe by sharp and multi-blade under the action of progressively increasing tightening torque, so as to achieve a reliable and sealed pipe fitting. connection purpose. The specification requirements of the matching pipe are relatively flexible. After being connected with the pipe, it has the characteristics of firm connection and good sealing performance. The ferrule joint has the characteristics of simple structure, convenient use, excellent manufacture, light and beautiful appearance, no need for gaskets, no welding, and material saving , Repeated assembly and disassembly performance is good; because the tube joints do not need to be welded, the influence of pipeline impurities on system performance is reduced. Therefore, it is widely used. When the pipe fittings of large automobile chassis are connected, the connection method of each pipe fitting is a ferrule connection. The defect is that the joint part is prone to gaps and leakage after a period of use.

【Content of invention】

The purpose of the present invention is to solve the problems in the prior art, and propose a connecting pipe fitting assembly for large-scale automobile chassis, which has reliable connection, good sealing performance, simple structure, convenient use, less likely to leak at the joint part, and long service life.

In order to achieve the above object, the present invention proposes a connecting pipe fitting assembly for a large automobile chassis, including a joint body, a sleeve, and a matching straight pipe. The joint body includes a ferrule pipe section, a straight pipe section, and a bent pipe section. The ferrule pipe section, the bent pipe section, and the straight pipe section are connected; the ferrule pipe section is matched with the kit, and the straight pipe section is matched with the matching straight pipe; the kit includes a jacket, a ferrule, a pressing piece, and a V-shaped seal. ring, lining core; the ferrule tube section of the joint body has a first inner cavity, a first stepped hole, and a second stepped hole, and one end of the lining core is provided with a large end face, which is installed in conjunction with the first stepped hole , the inner lining core is sequentially fitted with a V-shaped sealing ring, a pressing piece, and a ferrule, and the V-shaped sealing ring is installed in conjunction with the second stepped hole of the ferrule pipe section; the first stepped hole is located inside the ferrule pipe section, and the second The stepped hole is located on the outside of the first stepped hole, and the second stepped hole is close to the opening end of the tube section; the inner lining core is squeezed into the first stepped hole, and the V-shaped sealing ring of the inner lining core is pressed into the second stepped hole , to realize the seal between the kit and the pipe section of the ferrule; the V-shaped sealing ring is connected with the pressure piece, the pressure piece is connected with the ferrule, and the jacket is installed outside the ferrule, and the ferrule and the jacket are pressed and installed. The piece and the jacket are also installed in conjunction with the second stepped hole of the ferrule pipe section. The matching straight-through pipe includes a tapered section, a large pipe section, and a connecting pipe section. The supporting straight-through pipe is sequentially connected by a tapered section, a large pipe section, and a connecting pipe section. There is a tapered opening in the straight pipe section, the large end of the tapered opening opens to the outer end of the joint body, and the tapered section of the matching straight pipe is matched with the tapered opening to realize the conical connection between the tapered opening and the tapered section. Shaped extrusion connection, the first О-shaped sealing ring, the second О-shaped sealing ring, the third О-shaped sealing ring, the first О-shaped sealing ring, the second О-shaped sealing ring, the The three О-shaped sealing rings squeeze into the tapered opening to realize the sealing between the tapered opening and the tapered section. There is a groove between the large pipe section and the connecting pipe section of the supporting straight pipe, and a fourth О is installed in the groove. Type sealing ring, the straight pipe section has a second inner cavity, the first inner cavity of the ferrule pipe section communicates with the second inner cavity through the bent pipe section, the angle of the bent pipe section is 90°, the inner lining core A third lumen is opened inside, and the first lumen of the tube section communicates with the third lumen.

Beneficial effects of the present invention: the present invention achieves the purpose of sealingly connecting the elbow pipe fittings through ferrule-type connection and cone-sealed connection. After connecting with the pipeline, it has the characteristics of reliable connection and good sealing performance, simple structure, convenient use, and excellent manufacture. , The appearance is light and beautiful, no gaskets, no welding, material saving, good performance of repeated assembly and disassembly; the increased pressure piece, ferrule, V-shaped sealing ring and multiple О-shaped sealing ring structures can ensure the reliability of the seal. The part is not easy to leak and has a long service life.

The features and advantages of the present invention will be described in detail with reference to the accompanying drawings.

【Description of drawings】

Fig. 1 is a schematic structural view of a connecting pipe assembly for a large-scale automobile chassis of the present invention;

Fig. 2 is a ferrule connection schematic diagram of a large-scale automobile chassis with a connecting pipe fitting assembly of the present invention;

Fig. 3 is the conical connection schematic diagram of a kind of large-scale automobile chassis of the present invention connecting pipe assembly;

Fig. 4 is a schematic diagram of a joint body of a connecting pipe fitting assembly for a large-scale automobile chassis according to the present invention.

In the figure: 1-fitting body, 11-tube section, 111-first lumen, 112-first stepped hole, 113-second stepped hole, 12-straight pipe section, 121-second lumen, 122-cone Shaped opening, 13-bend section, 2-kit, 21-outer jacket, 22-ferrule, 23-press piece, 24-V-shaped sealing ring, 25-lining core, 251-big end face, 252-third inner Cavity, 3-supporting straight pipe, 31-conical section, 32-large pipe section, 33-connecting pipe section, 34-groove 34, 4-first О-type sealing ring, 5-second О-type sealing ring, 6- The third О type sealing ring, 7- the first О type sealing ring.

【detailed description】

Referring to Figures 1 to 4, the present invention includes a joint body 1, a kit 2, and a matching straight-through pipe 3. The joint body 1 includes a ferrule pipe section 11, a straight pipe section 12, and a bent pipe section 13. The joint body 1 is sequentially composed of a ferrule The pipe section 11, the bent pipe section 13, and the straight pipe section 12 are connected; the ferrule pipe section 11 is matched and connected with the kit 2, and the straight pipe section 12 is matched and connected with the supporting straight pipe 3; the kit 2 includes a jacket 21, a ferrule 22. Pressing piece 23, V-shaped sealing ring 24, lining core 25; the tube section 11 of the joint body 1 has a first inner cavity 111, a first stepped hole 112, a second stepped hole 113, and the inner lining One end of the core 25 is provided with a large end face 251, and the large end face 251 is installed in cooperation with the first stepped hole 112. A V-shaped sealing ring 24, a pressing piece 23, a ferrule 22 are sequentially set on the lining core 25, and the V-shaped sealing ring 24 and the ferrule The second stepped hole 113 of the casing section 11 is installed in cooperation; the V-shaped sealing ring 24 is connected with the pressure piece 23, the pressure piece 23 is connected with the ferrule 22, and the ferrule 22 is equipped with a jacket 21, and the ferrule 22 and the jacket 21, and the pressing piece 23 and the jacket 21 are also installed in cooperation with the second stepped hole 113 of the tube section 11.

The matching straight pipe 3 includes a tapered section 31 , a large pipe section 32 , and a connecting pipe section 33 . There is a tapered opening 122 in the straight pipe section 12, and the large end of the tapered opening 122 is opened to the outer end of the joint body 1, and the tapered section 31 of the matching straight pipe 3 is matched with the tapered opening 122 to realize the tapered shape. The opening 122 is connected to the conical extrusion of the conical section 31 . The first О-shaped sealing ring 4, the second О-shaped sealing ring 5, the third О-shaped sealing ring 6, the first О-shaped sealing ring 4, the second О-shaped sealing ring 5, The third О-shaped sealing ring 6 squeezes into the tapered opening 122 to realize the sealing between the tapered opening 122 and the tapered section 31 . A groove 34 is formed between the large pipe section 32 of the matching straight pipe 3 and the connecting pipe section 33, and a fourth О-shaped sealing ring 7 is installed in the groove 34. The inner lining core 25 is press-fitted with the first stepped hole 112 , and the V-shaped sealing ring 24 of the inner lining core 25 is pressed into the second stepped hole 113 to realize the sealing between the sleeve 2 and the tube section 11 . The first stepped hole 112 is located inside the tube section 11 , the second stepped hole 113 is located outside the first stepped hole 112 , and the second stepped hole 113 is close to the open end of the tube section 11 . The straight pipe section 12 has a second inner cavity 121 inside, and the first inner cavity 111 of the ferrule tube section 11 communicates with the second inner cavity 121 through the curved pipe section 13, and the angle of the curved pipe section 13 is 90°. The lining core 25 has a third inner cavity 252 inside, and the first inner cavity 111 of the tube section 11 communicates with the third inner cavity 252 .

Working process of the present invention:

During the working process of the connecting pipe assembly for large-scale automobile chassis of the present invention, the two openings of the joint body 1 are respectively matched and sealed with the kit 2 and the matching straight-through pipe 3, and the kit 2 is pressed into the joint body 1, and the inner lining core 25 will compress the first stepped hole 112, and the pressing piece 23 and the jacket 21 will press the inner wall of the tube section 11, and the V-shaped sealing ring 24 outside the inner core 25 realizes the sealing between the inner core 25 and the tube section 11 ; The tapered section 31 of the matching straight-through pipe 3 is matched with the tapered opening 122 to realize the tapered extrusion connection between the tapered opening 122 and the tapered section 31 . The first О-shaped sealing ring 4, the second О-shaped sealing ring 5, the third О-shaped sealing ring 6, the first О-shaped sealing ring 4, the second О-shaped sealing ring 5, The third О-shaped sealing ring 6 squeezes into the tapered opening 122 to realize the sealing between the tapered opening 122 and the tapered section 31 .

The present invention achieves the purpose of sealed connection of bent pipe fittings through ferrule-type connection and cone-sealed connection. After being connected with the pipeline, it has the characteristics of reliable connection and good sealing performance. Gaskets are added, no welding is required, materials are saved, and the performance of repeated assembly and disassembly is good; the additional pressure sheet 23, ferrule 22, V-shaped sealing ring 24 and multiple О-shaped sealing ring structures can ensure the reliability of the seal, and the joint part is not easy to occur Leakage, long service life.

The above-mentioned embodiment is an illustration of the present invention, not a limitation of the present invention, and any solution after a simple transformation of the present invention belongs to the protection scope of the present invention.

Claims (1)

1. a kind of Large Chassis with connecting pipe assembly it is characterised in that: include fittings body (1), external member (2), supporting straight Siphunculus (3), described fittings body (1) includes cutting ferrule pipeline section (11), straight length (12), bend loss (13), and fittings body (1) is successively by card Casing section (11), bend loss (13), straight length (12) are formed by connecting；Described cutting ferrule pipeline section (11) is in mating connection with external member (2), Straight length (12) is in mating connection with supporting straight pipe (3)；Described external member (2) includes overcoat (21), cutting ferrule (22), compressing tablet (23), V-shaped sealing ring (24), interior lining core (25)；Have in the cutting ferrule pipeline section (11) of described fittings body (1) first inner chamber (111), First shoulder hole (112), the second shoulder hole (113), interior lining core (25) one end is provided with large end face (251), large end face (251) and the One shoulder hole (112) cooperation is installed, and interior lining core (25) is set with V-shaped sealing ring (24), compressing tablet (23), cutting ferrule (22), v successively Type sealing ring (24) coordinates installation with second shoulder hole (113) of cutting ferrule pipeline section (11)；Described first shoulder hole (112) is located at card The inner side of casing section (11), the second shoulder hole (113) is located at the outside of the first shoulder hole (112), and the second shoulder hole (113) is close The openend of cutting ferrule pipeline section (11)；Described interior lining core (25) and the first shoulder hole (112) extruding cooperation, the V-shaped of interior lining core (25) Sealing ring (24) is pressed into the second shoulder hole (113), realizes the sealing between external member (2) and cutting ferrule pipeline section (11)；Described V-shaped sealing Circle (24) is connected with compressing tablet (23), and compressing tablet (23) is connected with cutting ferrule (22), is provided with overcoat (21), cutting ferrule outside cutting ferrule (22) (22) compression installation, compressing tablet (23) and overcoat (21) also the second shoulder hole with cutting ferrule pipeline section (11) and overcoat (21) between (113) cooperation is installed, and described supporting straight pipe (3) includes conical section (31), big pipeline section (32), connects pipeline section (33), supporting straight Siphunculus (3) is formed by connecting by conical section (31), big pipeline section (32), connection pipeline section (33) successively, has in described straight length (12) Tapered opening (122), the big end of tapered opening (122) is opened to the outer end of fittings body (1), the conical section of supporting straight pipe (3) (31) matched installation with tapered opening (122), and the tapered squeezing realizing tapered opening (122) with conical section (31) is connected, institute State and o type sealing ring (4), the 2nd o type sealing ring (5), the 3rd o type sealing ring are sequentially installed with conical section (31) (6), o type sealing ring (4), the 2nd o type sealing ring (5), the 3rd o type sealing ring (6) clamp-on tapered opening (122), real Existing sealing between tapered opening (122) and conical section (31), the big pipeline section (32) of described supporting straight pipe (3) and connection pipeline section (33) have groove (34) between, the 4th o type sealing ring (7) is installed in groove (34), in described straight length (12), have Two inner chambers (121), the first inner chamber (111) of cutting ferrule pipeline section (11) is connected with second inner chamber (121) by bend loss (13), curved The angle of pipeline section (13) is 90 °, has the 3rd inner chamber (252), the first inner chamber of cutting ferrule pipeline section (11) in described interior lining core (25) (111) it is connected with the 3rd inner chamber (252).