CN210830919U

CN210830919U - Wear-resistant inner pipe sleeve assembly

Info

Publication number: CN210830919U
Application number: CN201921886611.5U
Authority: CN
Inventors: 李华婵
Original assignee: Dongguan Zhuomao Precision Hardware Co ltd
Current assignee: Dongguan Zhuomao Precision Hardware Co ltd
Priority date: 2019-11-05
Filing date: 2019-11-05
Publication date: 2020-06-23
Anticipated expiration: 2029-11-05

Abstract

The utility model discloses a wear-resisting inner tube sleeve pipe assembly has, including sleeve pipe and fixed pipe, sheathed tube inner wall is encircleed to open and is equipped with the arc wall, and the fixed pipe of sheathed tube upper end central point fixedly connected with of department, sheathed tube inside sliding connection has the inner tube, and the fixed orifices has all been seted up to sheathed tube inside both sides, the both sides wall of inner tube is linear equidistance and has seted up spacing hole, and the lateral wall of inner tube is encircleed to open and is equipped with the hinge hole, the outside cover of inner tube has second rubber seal, second rubber seal's below is provided with the second stopper, second stopper fixed mounting is on the front surface of inner tube, the inside of hinge hole is rotated and is connected with the spheroid. The utility model discloses in through using the pulling inner tube, make the inner tube lateral wall rotate the spheroid of connection and take place to roll in the effect of power, become the roll with the relative slip between sleeve pipe and the inner tube, reduce the frictional force between inner tube and the outer tube, improved the stand wear and tear ability of subassembly.

Description

Wear-resistant inner pipe sleeve assembly

Technical Field

The utility model relates to a pipe fitting technical field especially relates to an inner tube sleeve subassembly is decreased to abrasionproof has.

Background

The casing pipe fitting is widely used in gas and liquid conveying pipelines in the fields of aerospace, transportation, petrochemical industry, electric power systems and the like, and mainly plays a role in conveying gas and liquid.

The existing sleeve assembly is difficult for a user to adjust the length of the sleeve assembly according to the installation condition on site, and in the drawing process, friction force is generated between the sleeve and an inner pipe, so that the abrasion between the sleeves of the inner pipe is easily caused after the sleeve assembly is used for a long time.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing an anti-abrasion inner pipe sleeve assembly.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an anti-abrasion inner pipe sleeve assembly comprises a sleeve and a fixed pipe, wherein an arc-shaped groove is formed in the inner wall of the sleeve in a surrounding mode, the fixed pipe is fixedly connected with the central position of the upper end of the sleeve, the inner pipe is connected to the inside of the sleeve in a sliding mode, fixed holes are formed in two sides of the inside of the sleeve, limiting holes are formed in two side walls of the inner pipe in linear equal intervals, hinge holes are formed in the side walls of the inner pipe in a surrounding mode, a second rubber sealing ring is sleeved on the outside of the inner pipe, a second limiting block is arranged below the second rubber sealing ring and fixedly installed on the front surface of the inner pipe, a ball body is connected to the inside of each hinge hole in a rotating mode and located inside the arc-shaped groove, a spring is fixedly connected to the inner side wall of each fixed hole, a limiting bulge is fixedly connected to one end of the, the inside of fixed pipe encircles the fixed arch of fixedly connected with, and the top of fixed pipe is provided with the connecting pipe, the connecting pipe box is at fixed pipe, and the outer wall cover of connecting pipe has first rubber seal, first rubber seal's top is provided with first stopper, first stopper fixed connection is on the front surface of connecting pipe, fixed arch and first stopper looks adaptation.

Preferably, the inner diameter of the hinge hole is smaller than the outer diameter of the ball body, and the hinge hole and the ball body are in interference fit.

Preferably, the inner diameter of the limiting hole is larger than the outer diameter of the limiting protrusion, and the limiting hole and the limiting protrusion are in clearance fit.

Preferably, the first rubber seal ring and the second rubber seal ring are made of nitrile rubber.

Preferably, the outer diameter of the fixed pipe is equal to the inner diameter of the connection pipe.

Preferably, the arc-shaped groove and the ball body are in interference fit.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses in through using the pulling inner tube, make the inner tube lateral wall rotate the spheroid of connection and take place the roll in the effect of power to become the roll with the relative slip between sleeve pipe and the inner tube, thereby reduce the frictional force between inner tube and the outer tube, thereby improved the stand wear and tear ability of subassembly.

2. The utility model discloses in after the inner tube removed suitable position, the user stopped to remove the inner tube, made spacing arch insert the spacing downthehole that the inner tube lateral wall was seted up under the effect of spring force this moment to the person of facilitating the use adjusts the length of subassembly according to the in service behavior.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the fixing protrusion structure of the present invention;

fig. 3 is a schematic view of the hinge hole structure of the present invention;

fig. 4 is an enlarged schematic view of a partial structure a of the present invention.

In the figure: 1. a sleeve; 2. a fixed tube; 3. an arc-shaped slot; 4. a hinge hole; 5. a sphere; 6. a limiting hole; 7. an inner tube; 8. a connecting pipe; 9. a first rubber seal ring; 10. a first stopper; 11. a fixed protrusion; 12. a second rubber seal ring; 13. a second limiting block; 14. a fixing hole; 15. a spring; 16. and a limiting bulge.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-4, an anti-abrasion inner pipe sleeve assembly comprises a sleeve 1 and a fixed pipe 2, an arc-shaped groove 3 is formed around the inner wall of the sleeve 1, the fixed pipe 2 is fixedly connected to the central position of the upper end of the sleeve 1, an inner pipe 7 is slidably connected to the inside of the sleeve 1, fixing holes 14 are formed in both sides of the inside of the sleeve 1, limiting holes 6 are formed in both sides of the inner pipe 7 in a linear equidistant manner, a hinge hole 4 is formed around the side wall of the inner pipe 7, a second rubber seal ring 12 is sleeved outside the inner pipe 7, a second limiting block 13 is arranged below the second rubber seal ring 12, the second limiting block 13 is fixedly mounted on the front surface of the inner pipe 7, a ball 5 is rotatably connected to the inside of the hinge hole 4, the ball 5 is located inside the arc-shaped groove 3, a spring 15 is fixedly connected to the inner side wall of the fixing hole 14, spacing arch 16 and spacing 6 looks adaptations, the inside of fixed pipe 2 is encircleed fixedly connected with stationary hump 11, and the top of fixed pipe 2 is provided with connecting

pipe

8, and 8 covers of connecting pipe are in fixed pipe 2, and the outer wall cover of connecting pipe 8 has first rubber seal 9, and the top of first rubber seal 9 is provided with first stopper 10, and first stopper 10 fixed connection is on the front surface of connecting pipe 8, stationary hump 11 and first stopper 10 looks adaptations.

The inner diameter of the hinge hole 4 is smaller than the outer diameter of the sphere 5, and the hinge hole 4 and the sphere 5 are in interference fit; the inner diameter of the limiting hole 6 is larger than the outer diameter of the limiting bulge 16, and the limiting hole 6 is in clearance fit with the limiting bulge 16; the first rubber seal ring 9 and the second rubber seal ring 12 are members made of nitrile rubber; the outer diameter of the fixed pipe 2 is equal to the inner diameter of the connecting pipe 8; the arc-shaped groove 3 and the ball body 5 are in interference fit.

The working principle is as follows: by pulling the inner pipe 7, the ball 5 which is rotatably connected with the side wall of the inner pipe 7 rolls under the action of force, so that the relative sliding between the sleeve 1 and the inner pipe 7 is changed into rolling, the friction force between the inner pipe 7 and the outer pipe 1 is reduced, and the wear resistance of the assembly is improved; after the inner tube 7 is moved to a proper position, the user stops moving the inner tube 7, and at the moment, the limiting protrusion 16 is inserted into the limiting hole formed in the side wall of the inner tube 7 under the action of the elastic force of the spring 15, so that the length of the assembly can be adjusted by the user conveniently according to the use condition.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a wear-proof inner tube sleeve assembly, includes sleeve pipe (1) and fixed pipe (2), its characterized in that, the inner wall of sleeve pipe (1) encircles and is opened and is equipped with arc wall (3), and the upper end central point of sleeve pipe (1) puts fixedly connected with fixed pipe (2), the inside sliding connection of sleeve pipe (1) has inner tube (7), and the inside both sides of sleeve pipe (1) have all seted up fixed orifices (14), the both sides wall of inner tube (7) is linear equidistance and has seted up spacing hole (6), and the side wall of inner tube (7) encircles and is opened and be equipped with hinge hole (4), the outside cover of inner tube (7) has second rubber seal (12), the below of second rubber seal (12) is provided with second stopper (13), second stopper (13) fixed mounting is on the front surface of inner tube (7), the inside rotation of hinge hole (4) is connected with spheroid (5), spheroid (5) are located the inside of arc wall (3), inside wall fixedly connected with spring (15) of fixed orifices (14), the spacing arch of one end fixedly connected with (16) of spring (15), spacing arch (16) and spacing hole (6) looks adaptation, the inside of fixed pipe (2) is encircleed fixedly connected with stationary hump (11), and the top of fixed pipe (2) is provided with connecting pipe (8), connecting pipe (8) cover is at fixed pipe (2), and the outer wall cover of connecting pipe (8) has first rubber seal (9), the top of first rubber seal (9) is provided with first stopper (10), first stopper (10) fixed connection is on the front surface of connecting pipe (8), stationary hump (11) and first stopper (10) looks adaptation.

2. An anti-wear inner pipe sleeve assembly according to claim 1, wherein the inner diameter of the hinge hole (4) is smaller than the outer diameter of the ball (5), and the hinge hole (4) and the ball (5) are in interference fit.

3. The inner pipe sleeve assembly with the wear prevention function is characterized in that the inner diameter of the limiting hole (6) is larger than the outer diameter of the limiting protrusion (16), and the limiting hole (6) and the limiting protrusion (16) are in clearance fit.

4. A wear resistant inner pipe sleeve assembly according to claim 1, wherein the first rubber seal (9) and the second rubber seal (12) are members of a nitrile rubber material.

5. A wear-resistant inner pipe sleeve assembly according to claim 1, wherein the outer diameter of the stationary pipe (2) is equal to the inner diameter of the connecting pipe (8).

6. An anti-wear inner pipe sleeve assembly according to claim 1, wherein the arc-shaped groove (3) and the ball (5) are in interference fit.