CN104455815A - Tapered sealing pipe connector for excavator - Google Patents

Abstract

The invention discloses a tapered sealing pipe connector for an excavator. The tapered sealing pipe connector comprises a connector body, a nut, a first connection pipe, a sleeve and a second connection pipe. The connector body comprises a big pipe segment, a small pipe segment and a bent pipe segment. The connector body is formed by sequentially connecting the small pipe segment, the bent pipe segment and the big pipe segment. The small pipe segment is connected with the second connection pipe. The joint of the small pipe segment and the second connection pipe is sleeved with the sleeve. The big pipe segment is connected with the first connection pipe through the nut. The big pipe segment is a segment of straight pipe. The outer ring of the tail end of the straight pipe is provided with external threads. A tapered opening is formed in the big pipe segment. The big end of the tapered opening faces the outer end of the connector body. The first connection pipe is provided with a first O-shaped sealing ring. The small pipe segment comprises a mounting head, a groove and a ladder axial segment. According to the tapered sealing pipe connector for the excavator, through tapered sealing connection, sealing performance can be well achieved, connection can be achieved quickly and conveniently, the connection part is made to be even in stress and not prone to damage and cracking, stability is improved, service life is prolonged, airtightness is good, safety performance is high, and the tapered sealing pipe connector is convenient to assemble.

Description

Cone seal pipe joint for excavator

【Technical field】

The invention relates to the technical field of connecting pipe fittings manufacturing, in particular to the technical field of cone-sealed pipe joints for excavators. the

【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. the

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. the

The hydraulic system of the excavator is a combination of various hydraulic components organically connected with pipelines. It mainly includes hydraulic oil tank, main pump, multi-way valve, various pipelines, oil cylinders and motors for performing various actions. Its function is to use oil as the working medium, use the hydraulic pump to convert the mechanical energy of the engine into hydraulic energy and transmit it, and then convert the hydraulic energy back into mechanical energy through hydraulic cylinders and hydraulic motors to realize various actions of the excavator. The hydraulic system of the excavator needs to be connected with the conical sealing pipe. The existing conical sealing pipe joints have insufficient sealing performance, poor versatility, inconvenient disassembly and assembly, and are subject to many restrictions during use. the

【Content of invention】

The purpose of the present invention is to solve the problems in the prior art, and propose a cone-sealed pipe joint for excavators, which is fast and convenient to connect, makes the connecting part evenly stressed, is not easy to be damaged and cracked, improves the stability and working life of the connection, and is sealed. Good performance, high safety performance, easy to assemble. the

In order to achieve the above object, the present invention proposes a cone-sealed pipe joint for excavators, including a joint body, a nut, a first connecting pipe, a casing and a second connecting pipe, and the joint body includes a large pipe section, a small pipe section, and an elbow section , the joint body is sequentially connected by a small pipe section, an elbow section, and a large pipe section; The connecting pipes are connected by nuts; the large pipe section is a section of straight pipe, the outer ring of the end of the straight pipe is provided with external threads, and there is a tapered opening in the large pipe section, and the large end of the tapered opening opens to the outer end of the joint body. A first О-type sealing ring is installed on a connecting pipe; the small pipe section includes a mounting head, a groove, and a stepped shaft section. the

Preferably, the front end of the first connecting pipe is provided with a tapered outer wall, the small end of the tapered outer wall opens to the outer end of the first connecting pipe, a groove is opened on the tapered outer wall, and a first О-shaped sealing ring is installed in the groove. the

As a preference, the tapered outer wall of the first connecting pipe cooperates with the tapered opening of the large pipe section to realize the conical extrusion connection between the first connecting pipe and the large pipe section, and the first О-shaped sealing ring is extruded into the tapered opening to realize The seal between the large pipe section and the first nozzle. the

Preferably, one section of the nut fits with the external thread, the outer wall of the rear section of the tapered outer wall of the first connecting pipe is provided with threads, and the other section of the nut fits with the thread of the first connecting pipe. the

Preferably, the small pipe section is composed of a stepped shaft section connected to an installation head, a groove is formed on the stepped shaft section, and a second О-type sealing ring is installed in the groove. the

Preferably, a tapered hole is opened on one end surface of the sleeve as an interface, a second connecting pipe is provided in the sleeve, and the interface of the sleeve is connected to the second connecting pipe by a barb of a clip. the

As a preference, the stepped shaft section of the small pipe section is pressed into the interface of the casing, the stepped shaft section extends into the second connecting pipe, and the second О-shaped sealing ring on the stepped shaft section squeezes into the second connecting pipe to realize the small pipe section The seal between the mounting head and the second adapter. the

As a preference, the angle of the curved pipe section is 90°, the first lumen of the large pipe section and the second lumen of the small pipe section communicate through the curved pipe section; horn. the

Beneficial effects of the present invention: the present invention can achieve good sealing performance through the sealing connection between the joint body and the first connecting pipe cone, and the extruding connection between the joint body and the second connecting pipe. The conical extruded connection between the connecting pipe and the large pipe section makes the connection fast and convenient, and the force on the connecting part is uniform, and it is not easy to be damaged and cracked. In addition, because the first О-shaped sealing ring on the first connecting pipe is squeezed into the conical outer wall of the large pipe section, the inside of the pipe The fluid is not easy to leak, and the nut is used for indirect connection and fixing to ensure the safety of the connection; the small pipe section and the second connecting pipe are also connected by extrusion, sealed by the second О-shaped sealing ring, and protected by a sleeve, which can effectively Prevent leakage caused by cracking of pipe fittings, increase the hardness of the connection between pipe fittings and joints, improve the stability and working life of the connection of the entire excavator cone seal pipe joint, the entire joint has good sealing performance, high safety performance, and is easy to assemble . the

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

【Description of drawings】

Fig. 1 is the connection schematic diagram of a kind of excavator cone sealing pipe joint of the present invention;

Fig. 2 is the connection local schematic diagram of a kind of excavator cone sealing pipe joint of the present invention;

Fig. 3 is another connection partial schematic diagram of a kind of excavator cone sealing pipe joint of the present invention;

Fig. 4 is the structural representation of the joint body of a kind of excavator cone seal pipe joint of the present invention;

Fig. 5 is the A-A cross-sectional view of the joint body of a taper seal pipe joint for an excavator of the present invention;

Fig. 6 is a partially enlarged view of a joint body of a taper seal pipe joint for an excavator according to the present invention. the

In the figure: 1-joint body, 11-large pipe section, 111-external thread, 112-tapered opening, 113-first inner cavity, 12-small pipe section, 121-installation head, 122-groove, 123-step shaft Section, 124-second inner cavity, 125-chamfer, 13-bend pipe section, 2-nut, 3-first connecting pipe, 31-tapered outer wall, 32-thread, 4-sleeve, 41-interface, 5 -The second connecting pipe, 6-the first О-type sealing ring, 7-the second О-type sealing ring. the

【Detailed ways】

Referring to Figures 1 to 6, the present invention includes a joint body 1, a nut 2, a first connecting pipe 3, a sleeve 4 and a second connecting pipe 5, and the joint body 1 includes a large pipe section 11, a small pipe section 12, and an elbow section 13 , the joint body 1 is successively connected by a small pipe section 12, an elbow section 13, and a large pipe section 11; 4. The large pipe section 11 is connected with the first connecting pipe 3 through the nut 2; the large pipe section 11 is a section of straight pipe, the outer ring of the end of the straight pipe is provided with an external thread 111, and a tapered opening 112 is opened in the large pipe section 11 , the large end of the tapered opening 112 opens to the outer end of the joint body 1, and the first О-type sealing ring 6 is installed on the first connecting pipe 3; the small pipe section 12 includes a mounting head 121, a groove 122, and a stepped shaft section 123 . The front end of the first connecting pipe 3 is provided with a tapered outer wall 31, the small end of the tapered outer wall 31 opens to the outer end of the first connecting pipe 3, a groove is opened on the tapered outer wall 31, and a first О-shaped sealing ring is installed in the groove 6. the

The tapered outer wall 31 of the first connecting pipe 3 cooperates with the tapered opening 112 of the large pipe section 11 to realize the conical extrusion connection between the first connecting pipe 3 and the large pipe section 11, and the first О-shaped sealing ring 6 squeezes into the tapered In the opening 112, the sealing between the large pipe section 11 and the first connecting pipe 3 is realized. One section of the nut 2 is threadedly matched with the external thread 111 , the outer wall of the rear section of the tapered outer wall 31 of the first connecting pipe 3 is provided with a thread 32 , and the other section of the nut 2 is matched with the threaded thread 32 of the first connecting pipe 3 . The small pipe section 12 is composed of a stepped shaft section 123 connected to an installation head 121. A groove 122 is formed on the stepped shaft section 123, and a second О-shaped sealing ring 7 is installed in the groove 122. One end surface of the casing 4 has a tapered hole as an interface 41 , and a second connecting pipe 5 is arranged inside the casing 4 , and the interface 41 of the casing 4 is connected to the second connecting pipe 5 by a clip barb. The stepped shaft section 123 of the small pipe section 12 is pressed into the interface 41 of the casing 4, the stepped shaft section 123 extends into the second connecting pipe 5, and the second О-shaped sealing ring 7 on the stepped shaft section 123 squeezes into the second connecting pipe 5, the sealing between the installation head 121 of the small pipe section 12 and the second connecting pipe 5 is realized. The angle of the bent pipe section 13 is 90°, the first lumen 113 of the large pipe section 11 and the second lumen 124 of the small pipe section 12 communicate through the bent pipe section 13; the end of the second lumen 124 of the small pipe section 12 A chamfer 125 is provided at the opening. the

The working process of the present invention:

During the working process of the cone-sealed pipe joint for excavators of the present invention, the small pipe section 12 of the joint body 1 is in sealing connection with the second connecting pipe 5, and the joint between the small pipe section 12 and the second connecting pipe 5 is covered with a casing 4, and the joint body The large pipe section 11 of 1 is connected with the first connecting pipe 3 through the nut 2. the

The tapered opening 112 of the large pipe section 11 cooperates with the tapered outer wall 31 of the first connecting pipe 3 to realize the conical extrusion connection between the first connecting pipe 3 and the large pipe section 11, and the first О-shaped sealing ring 6 squeezes into the tapered opening 112 Inside, the seal between the large pipe section 11 and the first connecting pipe 3 is realized. The stepped shaft section 123 of the small pipe section 12 is pressed into the interface 41 of the casing 4, the stepped shaft section 123 extends into the second connecting pipe 5, and the second О-shaped sealing ring 7 on the stepped shaft section 123 squeezes into the second connecting pipe 5 , to realize the sealing between the installation head 121 of the small pipe section 12 and the second connecting pipe 5; the connection between the interface 41 of the casing 4 and the second connecting pipe 5 is connected by a clip barb. the

In the present invention, the joint body 1 is connected with the first connecting pipe 3 in a cone-sealed connection, and the joint body 1 and the second connecting pipe 5 are extruded and connected, so that the sealing performance can be well realized. Conical extruding connection with the large pipe section 11 makes the connection fast and convenient, makes the connecting part evenly stressed, and is not easy to be damaged and cracked, and because the first О-shaped sealing ring 6 on the first connecting pipe 3 squeezes into the tapered outer wall 31 of the large pipe section 11 inside, so that the liquid in the pipe is not easy to leak, and then use the nut 2 to indirectly connect and fix it to ensure the safety of the connection; the small pipe section 12 and the second connecting pipe 5 are also connected by extrusion, and are sealed by the second О-shaped sealing ring 7, The use of sleeve protection can effectively prevent the leakage caused by the rupture of the pipe fittings, and can also increase the hardness of the connection between the pipe fittings and the joints, improving the stability and working life of the connection of the taper seal pipe joints used for the excavator, and the sealing performance of the entire joints. Well, high safety performance and easy assembly. the

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. the

Claims (8)

1. an excavator cone sealing pipe joint, it is characterized in that: comprise fittings body (1), nut (2), the first adapter (3), sleeve pipe (4) and the second adapter (5), described fittings body (1) comprises large pipeline section (11), little pipeline section (12), bend loss (13), and fittings body (1) is formed by connecting by little pipeline section (12), bend loss (13), large pipeline section (11) successively; Described little pipeline section (12) is taken over (5) and is connected with second, the joint that little pipeline section (12) and second takes over (5) is overlapped and had sleeve pipe (4); Described large pipeline section (11) is taken over (3) and is connected by nut (2) with first; Described large pipeline section (11) is straight-run of pipe, the end outer ring of straight tube is provided with outside thread (111), tapered opening (112) is had in large pipeline section (11), the large end of tapered opening (112) opens the outer end to fittings body (1), and the first adapter (3) is provided with a О RunddichtringO (6); Described little pipeline section (12) comprises mounting head (121), groove (122), ladder shaft part (123).

2. a kind of excavator cone sealing pipe joint as claimed in claim 1, it is characterized in that: described first adapter (3) front end is provided with conical outer wall (31), the small end of conical outer wall (31) opens the outer end to the first adapter (3), (31) have groove to conical outer wall, are provided with a О RunddichtringO (6) in groove.

3. a kind of excavator cone sealing pipe joint as claimed in claim 2, it is characterized in that: the described first adapter conical outer wall (31) of (3) matches with the tapered opening (112) of large pipeline section (11), realize the first adapter (3) to be connected with the tapered squeezing of large pipeline section (11), one О RunddichtringO (6) is clamp-oned in tapered opening (112), realizes the sealing between large pipeline section (11) and the first adapter (3).

4. a kind of excavator cone sealing pipe joint as claimed in claim 3, it is characterized in that: (2) one sections, described nut and outside thread (111) screw-thread fit, conical outer wall (31) the back segment outer wall of the first adapter (3) is provided with screw thread (32), and nut (2) another section takes over (3) screw thread (32) with first matches.

5. a kind of excavator cone sealing pipe joint as claimed in claim 1, it is characterized in that: described little pipeline section (12) is connected to form by ladder shaft part (123) and mounting head (121), ladder shaft part (123) has groove (122), the 2nd О RunddichtringO (7) is installed in groove (122).

6. a kind of excavator cone sealing pipe joint as claimed in claim 1, it is characterized in that: an end face of described sleeve pipe (4) opens cone shape hole as interface (41), be provided with the second adapter (5) in sleeve pipe (4), the interface (41) of sleeve pipe (4) is taken over second between (5) and is adopted fastener barb to be connected.

7. a kind of excavator cone sealing pipe joint as claimed in claim 6, it is characterized in that: in the interface (41) of the ladder shaft part (123) press-in sleeve pipe (4) of described little pipeline section (12), ladder shaft part (123) stretches in the second adapter (5), the 2nd О RunddichtringO (7) on ladder shaft part (123) is clamp-oned in the second adapter (5), realizes the sealing between the mounting head (121) of little pipeline section (12) and the second adapter (5).

8. a kind of excavator cone sealing pipe joint as claimed in claim 1, it is characterized in that: the angle of described bend loss (13) is 90 °, first inner chamber (113) of large pipeline section (11) is connected through bend loss (13) with second inner chamber (124) of little pipeline section (12); Second inner chamber (124) the open-ended place of little pipeline section (12) is provided with chamfering (125).