CN220600717U

CN220600717U - Cold-drawn precision seamless steel tube

Info

Publication number: CN220600717U
Application number: CN202321752205.6U
Authority: CN
Inventors: 许卫东; 任伟江; 徐彬; 李赛赛
Original assignee: WUXI DAJIN HIGH-PRECISION COLD-DRAWN STEEL TUBE CO LTD
Current assignee: WUXI DAJIN HIGH-PRECISION COLD-DRAWN STEEL TUBE CO LTD
Priority date: 2023-07-05
Filing date: 2023-07-05
Publication date: 2024-03-15
Anticipated expiration: 2033-07-05

Abstract

The utility model discloses a cold-drawn precision seamless steel tube, which comprises a connecting tube, wherein steel tube main bodies are arranged on two sides of the connecting tube, and the connecting tube is connected with the steel tube main bodies through a connecting mechanism; the steel pipe clamping device is simple in structure and reasonable in design, the clamping sleeve and the nut are sleeved on the outer side of the steel pipe body, then the pipe orifice of the steel pipe body is aligned with one side of the connecting pipe, then the nut is screwed to enable the clamping sleeve and the nut to move towards one side of the connecting pipe until the clamping sleeve is clamped tightly against the steel pipe body, meanwhile, the pushing block on one side of the clamping sleeve pushes the sliding block to slide in the groove, the shape of the sliding block is matched with the section of the pressing ring, the pressing ring is pushed to clamp the steel pipe body tightly, the connecting pipe is connected with the steel pipe body through the connecting mechanism through the matching of the clamping sleeve, the nut and the external threads, the sliding block and the pressing ring are pushed to further fasten the steel pipe body through the pushing block, connection reliability is guaranteed, operation is simple, and tightness of connection between the connecting pipe and the steel pipe body can be enhanced.

Description

Cold-drawn precision seamless steel tube

Technical Field

The utility model relates to the technical field of seamless steel pipes, in particular to a cold-drawn precise seamless steel pipe.

Background

The cold drawn precision steel tube is a high precision steel tube material after cold drawing or hot rolling treatment. The cold drawn seamless steel pipe is used in mechanical structure, hydraulic equipment, etc. and is used mainly in producing pneumatic or hydraulic element product, such as cylinder or oil cylinder.

When the existing cold-drawn precise steel pipes are connected, a splicing or welding method is generally adopted, and when two steel pipes are spliced, an external splicing screw cylinder is generally adopted, and the steel pipes can be quickly assembled in the assembling mode, but the stability is poor after the steel pipes are installed, and good sealing performance is difficult to achieve; because the contact surfaces on two sides of the steel pipes are smaller, the coaxiality of the two steel pipes is difficult to control during welding, the steel pipes are easy to drop in the welding process, and great inconvenience is caused to welding.

Disclosure of Invention

The utility model aims to provide a cold-drawn precision seamless steel tube, which is provided with a connecting mechanism, wherein a cutting sleeve and a nut are sleeved on the outer side of a steel tube main body, then a tube orifice of the steel tube main body is aligned with one side of a connecting tube, then the nut is screwed to enable the cutting sleeve and the nut to move towards one side of the connecting tube until the cutting sleeve is tightly held by the steel tube main body, meanwhile, a sliding block on one side of the cutting sleeve pushes a sliding block to slide in a groove, and the shape of the sliding block is matched with the section of a compression ring to push the compression ring to tightly hold the steel tube main body.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the cold-drawn precision seamless steel tube comprises a connecting tube, wherein steel tube main bodies are arranged on two sides of the connecting tube, the connecting tube is connected with the steel tube main bodies through a connecting mechanism, a clamping assembly for fixing the steel tube main bodies is arranged on the outer side of the connecting tube, and external threads are formed on two sides of the connecting tube;

the connecting mechanism comprises a clamping sleeve, a nut, a sliding block and a compression ring, wherein the clamping sleeve is arranged on the outer side of the steel pipe main body, and a pushing block is arranged on one side of the clamping sleeve; the nut is arranged on the outer side of the clamping sleeve, and the internal thread of the nut is matched with the external thread; the sliding block is movably arranged in a groove formed in the connecting pipe; the compression ring is arranged in a groove formed in the connecting pipe, and one side, adjacent to the compression ring, of the sliding block is an adaptive inclined plane;

the clamping assembly comprises two fixing rods, a compression spring and clamping half rings, wherein the two fixing rods are symmetrically arranged on two sides of the connecting pipe, cavities are formed in the two fixing rods, and sliding grooves are formed in two sides of the two fixing rods; the compression spring is arranged on the side wall in the cavity, and the other end of the compression spring is provided with a connecting rod; the clamping semi-ring is arranged on one side of the connecting rod, which is far away from the compression spring, and the shape of the clamping semi-ring is matched with the steel pipe main body.

Preferably, both sides of the connecting rod are in sliding connection with the sliding groove.

Preferably, the compression ring is made of PEEK.

Preferably, the number of the compression springs is 3.

Preferably, sealing rings are arranged on two sides of the connecting pipe.

Preferably, one side of the two fixing rods, which is far away from the clamping semi-ring, is provided with a pull ring.

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

1. according to the cold-drawn precision seamless steel tube, the connecting mechanism is arranged, the cutting sleeve and the nut are sleeved on the outer side of the steel tube main body, then the pipe orifice of the steel tube main body is aligned with one side of the connecting tube, then the nut starts to be screwed, so that the cutting sleeve and the nut move towards one side of the connecting tube until the cutting sleeve is tightly held by the steel tube main body, meanwhile, the pushing block on one side of the cutting sleeve pushes the sliding block to slide in the groove, the shape of the sliding block is matched with the section of the compression ring, the compression ring is pushed to tightly hold the steel tube main body, the connecting tube is connected with the steel tube main body by the matching of the cutting sleeve, the nut and the external threads through the connecting mechanism, the sliding block and the compression ring are pushed by the pushing block to further fasten the steel tube main body, so that the connection reliability is ensured, the operation is simple, and the sealing of the connecting position of the connecting tube and the steel tube main body can be reinforced;

2. this accurate seamless steel pipe of cold drawing, through being provided with the clamping assembly, the pulling connecting rod drives centre gripping semi-ring and removes towards opposite direction, then with preliminary butt joint of steel pipe main part and connecting pipe, unclamp the connecting rod afterwards, because compression spring receives the extrusion when the connecting rod displacement and produces opposite force, promote connecting rod and centre gripping semi-ring to reset and fix the steel pipe main part, utilize the centre gripping semi-ring to preliminarily fix the both sides at the connecting pipe with the steel pipe main part through the clamping assembly, the staff of being convenient for follow-up continuation carries out work such as burring, scribbles grease and butt joint installation to the port of steel pipe main part.

Drawings

FIG. 1 is a schematic view showing a fastening state of a connecting pipe and a steel pipe main body according to the present utility model;

FIG. 2 is a schematic view of a primary butt joint state structure of a connecting pipe and a steel pipe main body according to the present utility model;

FIG. 3 is a schematic side view of two retaining bars and clamp half rings according to the present utility model;

FIG. 4 is an enlarged schematic view of FIG. 1A according to the present utility model;

fig. 5 is an enlarged schematic view of fig. 2B in accordance with the present utility model.

In the figure: 1. a connecting pipe; 11. an external thread; 2. a connecting mechanism; 21. a cutting sleeve; 211. a pushing block; 22. a nut; 23. a sliding block; 24. a compression ring; 3. a clamping assembly; 31. two fixing rods; 311. a cavity; 312. a chute; 313. a pull ring; 32. a compression spring; 321. a connecting rod; 33. clamping the semi-ring; 4. a steel pipe main body.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of this patent, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "disposed" are to be construed broadly, and may be fixedly connected, disposed, or detachably connected, disposed, or integrally connected, disposed, for example. The specific meaning of the terms in this patent will be understood by those of ordinary skill in the art as the case may be.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a number" is two or more, unless explicitly defined otherwise.

Referring to fig. 1-5, the cold-drawn precision seamless steel tube provided by the utility model comprises a connecting tube 1, wherein two sides of the connecting tube 1 are connected with a steel tube main body 4, the connecting tube 1 is connected with the steel tube main body 4 through a connecting mechanism 2, a clamping component 3 for fixing the steel tube main body 4 is arranged at the outer side of the connecting tube 1, external threads 11 are arranged at two sides of the connecting tube 1, the connecting mechanism 2 comprises a clamping sleeve 21, a nut 22, a sliding block 23 and a pressing ring 24, the clamping sleeve 21 is sleeved at the outer side of the steel tube main body 4, one side of the clamping sleeve 21 is welded with a push block 211, the nut 22 is arranged at the outer side of the clamping sleeve 21, the internal threads of the nut 22 are matched with the external threads 11, the sliding block 23 is slidably arranged in a groove formed in the connecting tube 1, the pressing ring 24 is clamped in the groove formed in the connecting tube 1, and the adjacent side of the sliding block 23 and the pressing ring 24 is an adaptive inclined plane, firstly, the clamping sleeve 21 and the nut 22 are sleeved on the outer side of the steel pipe body 4, then the pipe orifice of the steel pipe body 4 is aligned with one side of the connecting pipe 1, then the nut 22 starts to be screwed, so that the clamping sleeve 21 and the nut 22 move towards one side of the connecting pipe 1 until the clamping sleeve 21 is tightly clamped with the steel pipe body 4, meanwhile, the push block 211 on one side of the clamping sleeve 21 pushes the sliding block 23 to slide in the groove, the shape of the sliding block 23 is matched with the section of the compression ring 24, the compression ring 24 is pushed to tightly clamp the steel pipe body 4, after the connecting pipe 1 is connected with the steel pipe body 4 by the clamping sleeve 21, the nut 22 and the external threads 11 through the connecting mechanism 2, the sliding block 23 and the compression ring 24 are pushed by the push block 211 to further fasten the steel pipe body 4, so that the reliability of connection is ensured, the operation is simple, and the sealing of the connecting part of the connecting pipe 1 and the steel pipe body 4 can be reinforced.

The clamping assembly 3 comprises two fixing rods 31, a compression spring 32 and a clamping semi-ring 33, wherein the two fixing rods 31 are symmetrically fixed on two sides of the connecting pipe 1, cavities 311 are formed in the two fixing rods 31, sliding grooves 312 are formed in two sides of the two fixing rods 31, the compression spring 32 is welded on the side wall of the inside of the cavities 311, the other end of the compression spring 32 is welded with a connecting rod 321, the clamping semi-ring 33 is fixed on one side, away from the compression spring 32, of the connecting rod 321 through bolts, the shape of the clamping semi-ring 33 is matched with that of the steel pipe body 4, the connecting rod 321 is pulled firstly to drive the clamping semi-ring 33 to move in the opposite direction, then the steel pipe body 4 is initially abutted with the connecting pipe 1, then the connecting rod 321 is loosened, and the compression spring 32 is extruded to generate opposite force to push the connecting rod 321 and the clamping semi-ring 33 to reset and fix the steel pipe body 4 when the connecting rod 321 is displaced, the clamping semi-ring 33 is utilized by the clamping assembly 3 to initially fix the steel pipe body 4 on two sides of the connecting pipe 1, and workers can continuously perform deburring, brushing, grease and abutting installation and other works on ports of the steel pipe body 4.

Both sides of the connecting rod 321 are slidably connected with the sliding groove 312, so that the connecting rod 321 can conveniently guide when moving in the sliding groove 312.

The compression ring 24 is made of PEEK material, and PEEK material has better rigidity and toughness, and the compression ring 24 of being convenient for is not warp when fixed steel pipe main part 4, does not crack.

The number of the compression springs 32 is 3, so that the clamping force of the clamping semi-rings 33 on the steel pipe main body 4 is enhanced.

Sealing rings are arranged on two sides of the connecting pipe 1, so that leakage between the connecting pipe 1 and the steel pipe main body 4 is avoided.

A pull ring 313 is welded on one side of the two fixing rods 31 away from the clamping semi-ring 33, so that the clamping semi-ring 33 is conveniently pulled by the pull ring 313.

The working principle of the utility model is as follows:

according to the cold-drawn precision seamless steel tube of the embodiment, when the cold-drawn precision seamless steel tube is used, the pull ring 313 is pulled firstly to enable the connecting rod 321 to drive the clamping semi-ring 33 to move towards the opposite direction, then the steel tube main body 4 is initially butted with the connecting tube 1, the pull ring 313 is loosened, the compression spring 32 is extruded to generate opposite force while the connecting rod 321 is displaced, the connecting rod 321 and the clamping semi-ring 33 are pushed to reset and fix the steel tube main body 4, the clamping semi-ring 33 is utilized by the clamping assembly 3 to initially fix the steel tube main body 4 on two sides of the connecting tube 1, work such as deburring, grease brushing and butt joint installation is carried out on the port of the steel tube main body 4 by workers conveniently, then the clamping sleeve 21 and the nut 22 are sleeved on the outer side of the steel tube main body 4, then the pipe orifice of the steel tube main body 4 and one side of the connecting tube main body 1 are aligned, then the clamping sleeve 21 and the nut 22 are started to be screwed, the clamping sleeve 22 is shifted towards one side of the connecting tube main body 1 until the clamping sleeve 21 is tightly abuts against the steel tube main body 4, simultaneously, the push block 211 on one side of the clamping sleeve 21 pushes the sliding block 23 to slide block 23 on the groove is pushed, the section of the sliding block 23 is matched with the section of the steel tube main body 4, the PEEK main body 4 is pushed to abut against the section of the 24, the PEEK main body 4 is pushed to be tightly, the clamping ring 24 is formed by the clamping ring 24, and the clamping ring 4 is not tightly connected with the connecting tube main body 4 by the clamping ring 2, and the clamping ring 2 is further connected with the clamping ring 4 through the clamping ring 4, and the clamping ring 2 is not tightly connected with the clamping ring 1, and the clamping ring 1 by utilizing the clamping ring 2.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present utility model, and are not intended to limit the utility model, and that various changes and modifications may be made therein without departing from the spirit and scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a accurate seamless steel pipe of cold drawing, includes connecting pipe (1), its characterized in that: the steel pipe connecting device is characterized in that steel pipe main bodies (4) are arranged on two sides of the connecting pipe (1), the connecting pipe (1) is connected with the steel pipe main bodies (4) through a connecting mechanism (2), clamping assemblies (3) used for fixing the steel pipe main bodies (4) are arranged on the outer sides of the connecting pipe (1), and external threads (11) are formed on two sides of the connecting pipe (1); the connecting mechanism (2) comprises a clamping sleeve (21), a nut (22), a sliding block (23) and a pressing ring (24), wherein the clamping sleeve (21) is arranged on the outer side of the steel pipe main body (4), and a pushing block (211) is arranged on one side of the clamping sleeve (21); the nut (22) is arranged on the outer side of the clamping sleeve (21), and the internal thread of the nut (22) is matched with the external thread (11); the sliding block (23) is movably arranged in a groove formed in the connecting pipe (1); the compression ring (24) is arranged in a groove formed in the connecting pipe (1), and one side of the sliding block (23) adjacent to the compression ring (24) is an adaptive inclined plane; the clamping assembly (3) comprises two fixing rods (31), a compression spring (32) and clamping half rings (33), wherein the two fixing rods (31) are symmetrically arranged on two sides of the connecting pipe (1), cavities (311) are formed in the two fixing rods (31), and sliding grooves (312) are formed in two sides of the two fixing rods (31); the compression spring (32) is arranged on the side wall of the inside of the cavity (311), and the other end of the compression spring (32) is provided with a connecting rod (321); the clamping semi-ring (33) is arranged on one side, far away from the compression spring (32), of the connecting rod (321), and the shape of the clamping semi-ring (33) is matched with that of the steel pipe main body (4).

2. The cold drawn precision seamless steel tube of claim 1, wherein: both sides of the connecting rod (321) are in sliding connection with the sliding groove (312).

3. The cold drawn precision seamless steel tube of claim 1, wherein: the compression ring (24) is made of PEEK.

4. The cold drawn precision seamless steel tube of claim 1, wherein: the number of the compression springs (32) is 3.

5. The cold drawn precision seamless steel tube of claim 1, wherein: sealing rings are arranged on two sides of the connecting pipe (1).

6. The cold drawn precision seamless steel tube of claim 1, wherein: one side of the two fixing rods (31) far away from the clamping semi-ring (33) is provided with a pull ring (313).