CN114233953A

CN114233953A - Splicing type corrugated pipe

Info

Publication number: CN114233953A
Application number: CN202111573054.3A
Authority: CN
Inventors: 林汉柱
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-12-21
Filing date: 2021-12-21
Publication date: 2022-03-25

Abstract

The invention discloses a splicing type corrugated pipe, and relates to the technical field of corrugated pipes; the fixing ring is sleeved in the annular groove on the right side of the insertion tube; the first sealing ring is embedded in the annular groove on the sleeve; the second sealing ring is sleeved on the annular groove on the right side of the insertion tube, the left side of the second sealing ring is fixed on the right side wall of the fixing ring, and the outer peripheral wall of the second sealing ring is arranged in contact with the inner peripheral wall of the sleeve; the stop levers are arranged on the upper side and the lower side of the left side of the sleeve; the inserting rod is fixed on the left side wall of the sleeve, and the other end of the inserting rod is inserted into the fixing ring; the connecting mechanism is embedded in the outer ring walls at the upper side and the lower side of the sleeve; the locking mechanisms are fixed on the upper side and the lower side of the outer ring wall of the sleeve; the spacing ring cover is established on the sleeve pipe, and the upper and lower both sides of spacing ring inboard are connected with two upper and lower coupling mechanism with one side, and the upper and lower both sides in the spacing ring outside cooperate with two upper and lower locking mechanism to block and establish, and connecting bolt is less, and installation and dismantlement are convenient, and non-deformable shifts to do not influence the use, and construction cost is lower.

Description

Splicing type corrugated pipe

Technical Field

The invention relates to the technical field of corrugated pipes, in particular to a splicing type corrugated pipe.

Background

The corrugated pipe is a wave-like pipe with a regular shape, the commonly used jinshu8 corrugated pipe is made of carbon steel, stainless steel, steel lining plastic, aluminum and the like, and is mainly used for occasions needing small bending radius non-concentric axial transmission, or irregular turning, stretching or absorbing thermal deformation of a pipeline and the like, the corrugated pipe is not convenient to be used for connecting the pipeline and the pipeline or connecting the pipeline and equipment, and the traditional corrugated pipe splicing generally needs to connect a plurality of metal corrugated pipes to achieve the purpose of lengthening.

Disclosure of Invention

The invention aims to provide the splicing type corrugated pipe which is reasonable in design and convenient to use, has fewer connecting bolts, is convenient to install and disassemble, is not easy to deform and displace, and therefore, the use is not influenced, and the construction cost is lower.

In order to achieve the purpose, the invention adopts the technical scheme that: the corrugated pipe comprises corrugated pipe bodies, inserting pipes and sleeves, wherein the plurality of corrugated pipe bodies are arranged in an end-to-end connection mode, the sleeves are arranged on the left sides of the corrugated pipe bodies, the inserting pipes are arranged on the right sides of the corrugated pipe bodies, and the inserting pipes are respectively inserted into the adjacent sleeves in a one-to-one correspondence mode; it also includes:

the fixing rings are arranged in a plurality of numbers, the fixing rings are sleeved and fixed in the annular groove on the right side of the insertion tube in a one-to-one correspondence manner, and the outer diameter of each fixing ring is smaller than that of the insertion tube;

the first sealing rings are a plurality of and are embedded and fixed in the annular groove on the inner wall of the side, away from the corrugated pipe body, of the sleeve in a one-to-one correspondence manner, and the inner walls of the first sealing rings and the inner wall of the sleeve are arranged in the same plane;

the second sealing rings are arranged in a plurality of numbers and are respectively sleeved on the annular grooves on the right sides of the plurality of insertion tubes one by one, the left sides of the second sealing rings are fixed on the right side walls of the fixing rings adjacent to the left sides of the second sealing rings, and the outer peripheral walls of the second sealing rings are in contact with the inner peripheral wall of the sleeve;

the stop levers are arranged on the upper side and the lower side of the left side of the sleeve in a pairwise corresponding manner, and the stop levers are arranged on the upper side and the lower side of the corresponding insertion tube in a vertically corresponding manner;

the inserting rods are a plurality of, the inserting rods are fixed on the left side wall of the sleeve in an equal quantity and equal angle mode, and the other ends of the inserting rods are inserted into the fixing rings adjacent to the inserting rods;

the connecting mechanisms are arranged in pairs and are embedded in the outer ring walls at the upper side and the lower side of the sleeve respectively;

the locking mechanisms are arranged in pairs and are respectively fixed on the upper side and the lower side of the outer ring wall of the sleeve in pairs;

the limiting ring is a plurality of limiting rings, the plurality of limiting rings are sleeved on the plurality of sleeves in a one-to-one correspondence mode, the upper side and the lower side of the inner side of each limiting ring are respectively connected with the upper connecting mechanism and the lower connecting mechanism on the same side, and the upper side and the lower side of the outer side of each limiting ring are respectively matched and clamped with the upper locking mechanism and the lower locking mechanism on the same side.

Preferably, a side wall of the stop lever adjacent to the fixing ring is fixed with a non-slip mat, the non-slip mat is abutted against the side wall of the fixing ring, and the friction force between the stop lever and the fixing ring is increased through the non-slip mat.

Preferably, the connecting mechanisms each comprise:

the connecting rod is fixed at one end of the stop lever far away from the insertion tube, cavities are formed in the upper side wall and the lower side wall of the sleeve, and the other end of the connecting rod penetrates through one side wall of the corresponding cavity and then is exposed inside the cavity;

the spring is sleeved on the connecting rod, and one end of the spring is fixed on the inner wall of the left side of the cavity;

the limiting plate is arranged on the right side inside the cavity, the limiting plate is fixed on the right end of the connecting rod, and the left side wall of the limiting plate is fixedly connected with the right end of the spring;

the sliding block is fixed on the limiting plate, the sliding block is arranged in the cavity far away from the sliding groove in one side wall of the insertion tube in a sliding mode respectively, and the other side of the sliding block penetrates through the cavity and then is fixed on the inner wall of the limiting ring.

Preferably, the locking mechanisms each comprise:

the fixed seat is fixed on the outer ring wall of the sleeve;

the middle end of the connecting bent pipe is connected with one end of the fixed seat far away from the sleeve pipe in a screwing way through a rotating shaft, and the connecting bent pipe is connected with the fixed seat through a torsion spring;

the locking lever, the locking lever be "L" shape setting, the horizontal limit of locking lever is inserted and is established in connecting the elbow, the perpendicular limit of locking lever is contradicted respectively and is kept away from on the lateral wall in the fixing base at the spacing ring.

Preferably, the connecting elbow pipe adjacent to one end of the spacing ring is screwed with an internal thread pipe through a plane thrust ball bearing, the internal thread pipe is sleeved on the locking rod and screwed with the locking rod through threads, a convex rod is fixed on one end of the locking rod adjacent to the spacing ring, the convex rod is inserted in the spacing ring, and when the connecting elbow pipe is used, the locking rod is driven to move through rotating the internal thread pipe, so that the spacing ring is limited.

Preferably, the outer side of the internal thread pipe is sleeved with and fixed with a turntable, and when the internal thread pipe is used, the turntable drives the internal thread pipe to rotate.

The working principle of the invention is as follows: when using, length selection as required is fit for quantity bellows body, then insert the intubate the intraductal of the sleeve that corresponds, and contradict the intubate on sheathed tube inside sealing washer, and the outer wall of No. two sealing washers on the intubate then contradicts on sheathed tube inner wall, make sleeve pipe and intubate sealed, and at this moment, the inserted bar on the sleeve pipe is inserted and is established in the retaining ring, it is spacing to the position of retaining ring, prevent its rotation, then pass through coupling mechanism and bushing with the retaining ring on the intubate, rethread locking mechanism locks the position of spacing ring, thereby make intubate and sleeve pipe zonulae occludens, the phenomenon of aversion can not take place.

Compared with the prior art, the invention has the beneficial effects that:

1. the two sides of the corrugated pipe body are respectively provided with the insertion pipe and the sleeve, and the insertion pipe and the sleeve can be matched for insertion connection, so that the splicing is convenient;

2. the cannula is sleeved and fixed with a fixing ring, and the fixing ring is connected with the sleeve through a connecting mechanism, so that the limiting is convenient;

3. the locking mechanism is arranged on the outer side wall of the sleeve and locks the limiting ring through the locking mechanism, so that the locking degree of the sleeve and the insertion pipe during connection is increased.

Drawings

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

Fig. 2 is a schematic view of the internal structure of the present invention.

Fig. 3 is an enlarged view of a portion a in fig. 2.

Fig. 4 is a schematic structural view of the sleeve of the present invention.

Fig. 5 is a schematic structural view of the connecting elbow of the present invention.

Fig. 6 is a schematic structural view of the locking lever of the present invention.

Description of reference numerals:

the corrugated pipe comprises a corrugated pipe body 1, an insertion pipe 2, a sleeve 3, a fixing ring 4, a first sealing ring 5, a second sealing ring 6, a stop lever 7, an insertion rod 8, a connecting mechanism 9, a connecting rod 9-1, a cavity 9-2, a spring 9-3, a limiting plate 9-4, a sliding block 9-5, a locking mechanism 10, a fixing seat 10-1, a connecting bent pipe 10-2, a locking rod 10-3, a limiting ring 11, an anti-skid pad 12, an internal threaded pipe 13, a convex rod 14 and a rotary table 15.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to fig. 6, the following technical solutions are adopted in the present embodiment: the corrugated pipe comprises corrugated pipe bodies 1, inserting pipes 2 and sleeves 3, wherein the plurality of corrugated pipe bodies 1 are arranged end to end, the sleeves 3 are integrally formed on the left side of each corrugated pipe body 1, the inserting pipes 2 are integrally formed on the right side of each corrugated pipe body 1, and the inserting pipes 2 are respectively inserted into the adjacent sleeves 3 in a one-to-one correspondence manner; it also includes:

the fixing rings 4 are provided in a plurality, the fixing rings 4 are sleeved and welded in the annular groove on the right side of the insertion tube 2 in a one-to-one correspondence manner, and the outer diameter of each fixing ring 4 is smaller than that of the insertion tube 2;

the first sealing rings 5 are a plurality of the first sealing rings 5, the first sealing rings 5 are embedded and adhered in annular grooves on the inner wall of the side, away from the corrugated pipe body 1, of the sleeve pipe 3 in a one-to-one correspondence mode, and the inner walls of the first sealing rings 5 and the inner wall of the sleeve pipe 3 are arranged in the same plane;

the number of the second sealing rings 6 is multiple, the second sealing rings 6 are respectively sleeved and adhered on annular grooves on the right sides of the plurality of insertion pipes 2 one by one, the left sides of the second sealing rings 6 are adhered and fixed on the right side walls of the fixing rings 4 adjacent to the left sides of the second sealing rings 6, and the outer peripheral walls of the second sealing rings 6 are in contact with the inner peripheral wall of the sleeve 3;

the stop levers 7 are arranged in a plurality of numbers, the stop levers 7 are correspondingly arranged on the upper side and the lower side of the left side of the sleeve 3 in pairs, and the stop levers 7 are correspondingly arranged on the upper side and the lower side of the corresponding insertion tube 2 in a vertical manner;

the inserting rods 8 are arranged in a plurality of numbers, the inserting rods 8 are welded and fixed on the left side wall of the sleeve 3 in an equal and equiangular mode, and the other ends of the inserting rods 8 are inserted into the fixing rings 4 adjacent to the inserting rods 8;

the connecting mechanisms 9 are provided in plurality, and the connecting mechanisms 9 are embedded in the outer ring walls at the upper side and the lower side of the sleeve 3 in pairs respectively;

the locking mechanisms 10 are provided in plurality, and the locking mechanisms 10 are fixed on the upper side and the lower side of the outer annular wall of the sleeve 3 in pairs respectively;

the limiting ring 11, the limiting ring 11 be the several, several limiting ring 11 one-to-one overlaps and is established on several sleeve pipe 3, and the upper and lower both sides of limiting ring 11 inboard are connected with two upper and lower coupling mechanism 9 with one side respectively, the upper and lower both sides in the outside of limiting ring 11 cooperate the card with two upper and lower locking mechanism 10 with one side respectively and establish.

Preferably, a non-slip mat 12 is adhered and fixed on a side wall of the blocking rod 7 adjacent to the fixing ring 4, the non-slip mat 12 abuts against the side wall of the fixing ring 4, and the friction force between the blocking rod 7 and the fixing ring 4 is increased by the non-slip mat 12.

Preferably, the connecting mechanisms 9 each include:

the connecting rod 9-1 is fixedly welded at one end, far away from the insertion pipe 2, of the stop lever 7, the cavities 9-2 are formed in the upper side wall and the lower side wall of the sleeve 3, and the other end of the connecting rod 9-1 penetrates through one side wall of the corresponding cavity 9-2 and then is exposed inside the cavity 9-2;

the spring 9-3 is sleeved on the connecting rod 9-1, and one end of the spring 9-3 is welded and fixed on the inner wall of the left side of the cavity 9-2;

the limiting plate 9-4 is arranged on the right side inside the cavity 9-2, the limiting plate 9-4 is fixed on the right end of the connecting rod 9-1 through a bolt, and the left side wall of the limiting plate 9-4 is welded and fixed with the right end of the spring 9-3;

the sliding block 9-5 is fixed on the limiting plate 9-4 through a bolt, the sliding blocks 9-5 are respectively arranged in the sliding groove on the side wall of the cavity 9-2 far away from the insertion tube 2 in a sliding mode, and the other side of the sliding block 9-5 penetrates through the cavity 9-2 and then is fixed on the inner wall of the limiting ring 11 through the bolt.

Preferably, the locking mechanisms 10 each include:

the fixing seat 10-1 is fixedly welded on the outer annular wall of the sleeve 3;

the connecting bent pipe 10-2 is arranged in a V shape, the middle end of the connecting bent pipe 10-2 is connected with one end, far away from the sleeve 3, of the fixed seat 10-1 in a screwing mode through a rotating shaft, and the connecting bent pipe 10-2 is connected with the fixed seat 10-1 through a torsion spring;

the locking device comprises a locking rod 10-3, wherein the locking rod 10-3 is arranged in an L shape, the transverse edge of the locking rod 10-3 is inserted into the connecting bent pipe 10-2, and the vertical edge of the locking rod 10-3 is respectively abutted against one side wall of the limiting ring 11 far away from the fixed seat 10-1.

As a preferable scheme, furthermore, one end of the connecting bent pipe 10-2 adjacent to the limit ring 11 is screwed with an internal threaded pipe 13 through a flat thrust ball bearing, the internal threaded pipe 13 is sleeved on the locking rod 10-3 and screwed through threads, one end of the vertical rod of the locking rod 10-3 adjacent to the limit ring 11 is fixedly welded with a convex rod 14, the convex rod 14 is inserted into the limit ring 11, and when in use, the internal threaded pipe 13 is rotated to drive the locking rod 10-3 to move, so as to limit the limit ring 11.

Preferably, the outer sides of the internally threaded pipes 13 are respectively sleeved with and welded with a rotating disc 15, and when the internally threaded pipes 13 are used, the rotating discs 15 drive the internally threaded pipes 13 to rotate.

The working principle of the specific embodiment is as follows: when the corrugated pipe is used, a proper number of corrugated pipe bodies 1 are selected according to the required length, then the insertion pipes 2 are inserted into the corresponding sleeve pipes 3, the insertion pipes 2 are abutted against the first sealing rings 5 in the sleeve pipes 3, the outer walls of the second sealing rings 6 on the insertion pipes 2 are abutted against the inner walls of the sleeve pipes 3, so that the sleeve pipes 3 are sealed with the insertion pipes 2, at the moment, the insertion rods 8 on the sleeve pipes 3 are inserted into the fixing rings 4 to limit the positions of the fixing rings 4 to prevent the fixing rings from rotating, then the fixing rings 4 on the insertion pipes 2 are connected with the sleeve pipes 3 through the connecting mechanisms 9, when the connecting mechanisms 9 are used for connection, the limiting rings 11 are stirred towards the right side, the limiting rings 11 drive the limiting plates 9-4 to move towards the right side through the sliding blocks, the limiting plates 9-4 drive the connecting rods 9-1 to move towards the right side, and further drive the stop rods 7 to move towards the right side, so that the stop rods 7 are abutted against the fixing rings 4, at the moment, the spring 9-3 is stretched, the elastic force of the spring 9-3 exerts pulling force on the stop lever 7 to prevent the stop lever 7 from being loosened, the position of the limit ring 11 is locked through the locking mechanism 10, so that the insertion tube 2 is tightly connected with the sleeve 3, and the displacement phenomenon cannot occur.

Compared with the prior art, the beneficial effects of the embodiment are as follows:

1. the two sides of the corrugated pipe body 1 are respectively provided with the insertion pipe 2 and the sleeve 3, and the insertion pipe 2 and the sleeve 3 can be matched for insertion connection, so that splicing is convenient;

2. the cannula 2 is sleeved and fixed with a fixing ring 4, and the fixing ring 4 is connected with the sleeve 3 through a connecting mechanism 9, so that the limiting is convenient;

3. the outer side wall of the sleeve 3 is provided with a locking mechanism 10, and the limiting ring 11 is locked through the locking mechanism 10, so that the locking degree of the sleeve 3 and the insertion pipe 2 during connection is increased;

4. the locking rod 10-3 is screwed with the internal threaded pipe 13 on the connecting bent pipe 10-2 through threads, and when the internal threaded pipe 13 is driven to rotate, the locking rod 10-3 can be driven to move, so that the locking degree during connection can be conveniently adjusted.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.

Claims

1. A splicing type corrugated pipe comprises corrugated pipe bodies (1), inserting pipes (2) and sleeves (3), wherein the plurality of corrugated pipe bodies (1) are arranged end to end, the sleeves (3) are arranged on the left sides of the corrugated pipe bodies (1), the inserting pipes (2) are arranged on the right sides of the corrugated pipe bodies (1), and the inserting pipes (2) are respectively inserted into the sleeves (3) adjacent to the inserting pipes in a one-to-one corresponding mode; it is characterized in that it also comprises:

the fixing rings (4) are provided in a plurality, the fixing rings (4) are sleeved and fixed in the annular groove on the right side of the insertion tube (2) in a one-to-one correspondence manner, and the outer diameter of each fixing ring (4) is smaller than that of the insertion tube (2);

the corrugated pipe comprises a corrugated pipe body (1), a first sealing ring (5), a plurality of sealing rings (3) and a sealing ring, wherein the first sealing rings (5) are embedded and fixed in an annular groove in the inner wall of one side, away from the corrugated pipe body (1), of the sleeve pipe (3) in a one-to-one correspondence manner, and the inner wall of the first sealing ring (5) and the inner wall of the sleeve pipe (3) are arranged in the same plane;

the number of the second sealing rings (6) is multiple, the second sealing rings (6) are respectively sleeved on the annular grooves on the right sides of the plurality of insertion tubes (2) one by one, the left sides of the second sealing rings (6) are fixed on the right side walls of the fixing rings (4) adjacent to the left sides of the second sealing rings, and the outer peripheral walls of the second sealing rings (6) are in contact with the inner peripheral wall of the sleeve (3);

the device comprises a plurality of stop rods (7), wherein the stop rods (7) are arranged in pairs and correspondingly arranged on the upper side and the lower side of the left side of the sleeve (3), and the stop rods (7) are correspondingly arranged on the upper side and the lower side of the corresponding insertion tube (2) up and down;

the inserting rods (8), the inserting rods (8) are multiple, the inserting rods (8) are fixed on the left side wall of the sleeve (3) in an equal amount and at equal angles, and the other end of each inserting rod (8) is inserted into the fixing ring (4) adjacent to the inserting rod;

the connecting mechanisms (9) are multiple, and the connecting mechanisms (9) are embedded in the outer ring walls on the upper side and the lower side of the sleeve (3) in pairs respectively;

the locking mechanisms (10) are multiple, and the multiple locking mechanisms (10) are fixed on the upper side and the lower side of the outer ring wall of the sleeve (3) in pairs respectively;

spacing ring (11), spacing ring (11) be the several, several spacing ring (11) one-to-one cover is established on several sleeve pipe (3), and spacing ring (11) inboard upper and lower both sides are connected with two upper and lower coupling mechanism (9) with one side respectively, the upper and lower both sides in the outside of spacing ring (11) cooperate the card with two upper and lower locking mechanism (10) with one side respectively and establish.

2. The splittable bellows of claim 1, wherein: the side wall of the stop lever (7) adjacent to the fixing ring (4) is fixed with an anti-slip mat (12), the anti-slip mat (12) is abutted against the side wall of the fixing ring (4), and the friction force between the stop lever (7) and the fixing ring (4) is increased through the anti-slip mat (12).

3. The splittable bellows of claim 1, wherein: the connecting mechanisms (9) each comprise:

the connecting rod (9-1) is fixed at one end, far away from the insertion pipe (2), of the stop lever (7), cavities (9-2) are formed in the upper side wall and the lower side wall of the sleeve (3), and the other end of the connecting rod (9-1) penetrates through one side wall of the corresponding cavity (9-2) and then is exposed inside the cavity (9-2);

the spring (9-3) is sleeved on the connecting rod (9-1), and one end of the spring (9-3) is fixed on the inner wall of the left side of the cavity (9-2);

the limiting plate (9-4), the limiting plate (9-4) is arranged on the right side inside the cavity (9-2), the limiting plate (9-4) is fixed on the right end of the connecting rod (9-1), and the left side wall of the limiting plate (9-4) is fixedly connected with the right end of the spring (9-3);

the sliding block (9-5) is fixed on the limiting plate (9-4), the sliding blocks (9-5) are respectively arranged in the sliding groove on the side wall of the cavity (9-2) far away from the insertion tube (2) in a sliding mode, and the other side of the sliding block (9-5) penetrates through the cavity (9-2) and then is fixed on the inner wall of the limiting ring (11).

4. The splittable bellows of claim 1, wherein: the locking mechanisms (10) each comprise:

the fixing seat (10-1), the said fixing seat (10-1) is fixed on the outer annular wall of the thimble (3);

the connecting bent pipe (10-2) is arranged in a V shape, the middle end of the connecting bent pipe (10-2) is connected with one end, far away from the sleeve (3), of the fixed seat (10-1) through a rotating shaft in a rotating mode, and the connecting bent pipe (10-2) is connected with the fixed seat (10-1) through a torsion spring;

the locking device comprises a locking rod (10-3), wherein the locking rod (10-3) is arranged in an L shape, the transverse edge of the locking rod (10-3) is inserted into the connecting bent pipe (10-2), and the vertical edges of the locking rod (10-3) respectively abut against one side wall, far away from the fixing seat (10-1), of the limiting ring (11).

5. The splittable bellows of claim 4, wherein: one end of the connecting bent pipe (10-2) adjacent to the limiting ring (11) is screwed with an internal threaded pipe (13) through a plane thrust ball bearing, the internal threaded pipe (13) is sleeved on the locking rod (10-3) and is screwed through threads, a protruding rod (14) is fixed on one end of the vertical rod of the locking rod (10-3) adjacent to the limiting ring (11), the protruding rod (14) is inserted in the limiting ring (11), and when the connecting bent pipe is used, the locking rod (10-3) is driven to move by rotating the internal threaded pipe (13), so that the limiting ring (11) is limited.

6. The splittable bellows of claim 5, wherein: the outer side of the internal thread pipe (13) is sleeved with and fixed with a rotary table (15), and when the rotary table is used, the internal thread pipe (13) is driven to rotate through the rotary table (15).

7. The working principle of the splittable bellows according to claim 1, wherein: when in use, the proper number of the corrugated pipe bodies (1) are selected according to the required length, then the insertion pipes (2) are inserted into the corresponding sleeves (3), and the inserting pipe (2) is pressed against a first sealing ring (5) in the sleeve (3), the outer wall of a second sealing ring (6) on the insertion pipe (2) is butted against the inner wall of the sleeve (3) to seal the sleeve (3) and the insertion pipe (2), and at the moment, the inserted bar (8) on the sleeve (3) is inserted in the fixed ring (4), the position of the fixing ring (4) is limited to prevent the fixing ring from rotating, then the fixing ring (4) on the insertion tube (2) is connected with the sleeve (3) through the connecting mechanism (9), and the position of the limiting ring (11) is locked through the locking mechanism (10), thereby the inserting tube (2) is tightly connected with the sleeve (3) and the displacement phenomenon can not occur.