CN212868137U

CN212868137U - Accurate steel pipe connection buckle screw

Info

Publication number: CN212868137U
Application number: CN202021941018.9U
Authority: CN
Inventors: 赵斌; 赵艳忠; 梁洪伟
Original assignee: Shanghai Xiejin Precision Stainless Steel Pipe Valve Co ltd
Current assignee: Shanghai Xiejin Precision Stainless Steel Pipe Valve Co ltd
Priority date: 2020-09-08
Filing date: 2020-09-08
Publication date: 2021-04-02
Anticipated expiration: 2030-09-08

Abstract

The utility model discloses an accurate steel pipe connection buckle screw, including the hexagonal cap, the circular slot has been seted up to the hexagonal cap up end, the circular slot up end rotates and is connected with the handle, the first bolt head of terminal surface fixedly connected with under the hexagonal cap, hexagonal cap one end fixedly connected with inflation cover is kept away from to first bolt head, inflation cover outer wall fixed cover is equipped with the stop collar, terminal surface fixed connection is on terminal surface under the first bolt head on the stop collar, the external screw thread has been seted up on the inflation cover outer wall, the inflation cover is kept away from first bolt head one end outer wall screw thread and has been cup jointed fixation nut, the fixed cover of inflation cover inner wall has cup jointed yielding rubber cover and threaded connection piece respectively, the yielding rubber cover is located and is close to first bolt head one end department setting. The utility model discloses an accurate steel pipe connection buckle screw, this screw have antiskid, and the installation is firm, changes advantages such as demolish than traditional inflation screw.

Description

Accurate steel pipe connection buckle screw

Technical Field

The utility model relates to a screw field especially relates to an accurate steel pipe connection buckle screw.

Background

The screw is a tool for fastening the parts of the object step by utilizing the physics and mathematical principles of the inclined circular rotation and friction of the object. Screws are a common term for fasteners, a common spoken word. The screw is indispensable industry requisite in daily life: extremely small screws used for cameras, glasses, clocks, electronics, and the like; general screws for televisions, electric appliances, musical instruments, furniture, and the like; large screws and nuts are used for engineering, buildings and bridges; transportation equipment, airplanes, electric cars, automobiles, and the like are used with screws of different sizes. The screw has an important task in industry, and as long as there is industry on earth, the function of the screw is always important. The screw is a common invention in production and life of people for thousands of years, and is the first invention of human according to the application field, and the screw mainly has the function of connecting two workpieces together to play a role of fastening.

The general structure singleness of some screws does not have some connection structure to its special requirement, just need this type of screw to possess stronger stability when connecting the steel pipe buckle for example, can not take place to drop gliding phenomenon in the use later stage, people have invented an inflation screw in order to deal with some special requirements, this type of screw has stronger installation stability, the later stage emergence after having solved the screw installation and has dropped phenomenon, but this type of inflation screw is because the inflation leads to the inflation cover position to imbed in the mounting groove after the installation, it is comparatively difficult when wanting to take off.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a precise steel pipe connecting buckle screw.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a precise steel pipe connecting buckle screw comprises a hexagonal cap, wherein a circular groove is formed in the upper end face of the hexagonal cap, a handle is rotatably connected to the upper end face of the circular groove, a first bolt head is fixedly connected to the lower end face of the hexagonal cap, an expansion sleeve is fixedly connected to one end, away from the hexagonal cap, of the first bolt head, a limiting sleeve is fixedly sleeved on the outer wall of the expansion sleeve, the upper end face of the limiting sleeve is fixedly connected to the lower end face of the first bolt head, external threads are formed in the outer wall of the expansion sleeve, away from the first bolt head, of the expansion sleeve, are sleeved with a fixing nut in a threaded manner, a damping rubber sleeve and a threaded connecting block are respectively fixedly sleeved on the inner wall of the expansion sleeve, the damping rubber sleeve is arranged close to one end of the first bolt head, the upper end face of the threaded connecting block is fixedly connected to the, the terminal surface fixedly connected with second bolt head under the T type screw rod, T type screw rod outer wall screw thread has cup jointed the rubber circle cover, the rubber circle cover is located and sets up between terminal surface and the second bolt head up end under the threaded connection piece, T type screw rod upper end runs through the threaded connection piece and has the piston with the swivelling joint, the spread groove has been seted up to piston inner.

As a further description of the above technical solution:

the stop collar comprises rubber material.

As a further description of the above technical solution:

the length of the damping rubber sleeve is not more than the length of the expansion sleeve connected in the buckle mounting hole.

As a further description of the above technical solution:

the outer end of the T-shaped screw is provided with an internal thread.

As a further description of the above technical solution:

and an annular connecting fillet is fixedly arranged at the joint of the second bolt head and the T-shaped screw rod.

As a further description of the above technical solution:

and hydraulic oil is arranged at the upper end of the piston.

The utility model discloses following beneficial effect has:

compared with the prior art, the device is through setting up hydraulic oil in screw expansion sleeve inside to drive piston compression hydraulic oil through T type screw rod, finally drive the expansion of screw expansion sleeve and fix the fixed antiskid installation of realizing the screw in the buckle mounting hole, because compression structure, can draw the expansion sleeve back when reverse band-up piston and contract and conveniently demolish screw structure.

Drawings

Fig. 1 is a front view of a precision steel pipe connection buckle screw provided by the present invention;

FIG. 2 is a partial sectional view of the internal structure of a precision steel pipe connection buckle screw provided by the present invention;

fig. 3 is the utility model provides a top view of accurate steel pipe connection buckle screw.

Illustration of the drawings:

1. a hexagonal cap; 2. a circular groove; 3. a handle; 4. a first bolt head; 5. a limiting sleeve; 6. an expansion sleeve; 7. an external thread; 8. fixing a nut; 9. a shock-absorbing rubber sleeve; 10. a threaded connection block; 11. a T-shaped screw; 12. a second bolt head; 13. an internal thread; 14. a rubber round sleeve; 15. a piston; 16. connecting grooves; 17. connecting a fillet; 18. and (5) hydraulic oil.

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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-3, the present invention provides an embodiment: a precise steel pipe connection buckle screw comprises a hexagonal cap 1, a circular groove 2 is formed in the upper end face of the hexagonal cap 1, a handle 3 is rotatably connected to the upper end face of the circular groove 2, a plurality of screws can be connected in series through the handle 3, a first bolt head 4 is fixedly connected to the lower end face of the hexagonal cap 1, an expansion sleeve 6 is fixedly connected to one end, away from the hexagonal cap 1, of the first bolt head 4, a limiting sleeve 5 is fixedly sleeved on the outer wall of the expansion sleeve 6, the upper end face of the limiting sleeve 5 is fixedly connected to the lower end face of the first bolt head 4, a limiting expansion effect is performed on the section, close to the first bolt head 4, of the expansion sleeve 6 through the limiting sleeve 5, a protection effect is performed on the end, close to the limiting sleeve 5, of the first bolt head 4 when the first bolt head 4 presses a buckle, an external thread 7 is formed in the outer wall of the expansion sleeve 6, a fixing nut 8 is sleeved, the fixing nut 8 is used for reversely rotating the pressing buckle to lock screws installed on the buckle, the inner wall of the expansion sleeve 6 is respectively fixedly sleeved with a damping rubber sleeve 9 and a threaded connection block 10, the damping rubber sleeve 9 is located at a position close to one end of the first bolt head 4, the upper end face of the threaded connection block 10 is fixedly connected to the lower end face of the damping rubber sleeve 9, the inner end of the threaded connection block 10 is in threaded connection with a T-shaped screw 11, the lower end face of the T-shaped screw 11 is fixedly connected with a second bolt head 12, a rubber round sleeve 14 is sleeved on the outer wall of the T-shaped screw 11 in a threaded manner, the rubber round sleeve 14 plays a role in protecting the second bolt head 12, the rubber round sleeve 14 is located between the lower end face of the threaded connection block 10 and the upper end face of the second bolt head 12, the upper end of the T-shaped screw 11 penetrates through the threaded connection block 10 and is rotatably connected with a piston 15, a connecting.

Stop collar 5 comprises the rubber material, 9 length of yielding rubber cover are not more than the expansion sleeve 6 and connect the length in the buckle mounting hole, prevent that screw device from installing the partial inflation of back expansion sleeve 6 outside the mounting hole, influence the expansion effect of expansion sleeve 6 branch in the mounting hole, internal thread 13 has been seted up to T type screw rod 11 outer end, second bolt head 12 is provided with annular connection fillet 17 with the fixed annular that is provided with of T type screw rod 11 junction, can slow down stress concentration phenomenon, improve fatigue resistance, improve T type screw rod 11's life, piston 15 upper end is provided with hydraulic oil 18, hydraulic oil 18 fills in piston 15 upper end, in the cavity that forms between 9 and the threaded connection piece 10 inner walls of yielding rubber cover.

The working principle is as follows: during the use, insert buckle mounting hole threaded connection with the screw device earlier, then rotate 8 compression buckle of fixation nut and make the buckle be in between stop collar 5 and fixation nut 8, rotate second bolt head 12 and drive T type screw rod 11 and rotate compression piston 15 after the fixing is good, and pressurize hydraulic oil 18 through piston 15, finally hydraulic oil 18 motion jack-up expansion sleeve 6 makes the screw fix in the buckle mounting hole, it finally drives piston 15 and contracts to arouse that inside negative pressure leads to expansion sleeve 6 to contract and take out after disassembling to rotate second bolt head 12.

Finally, it should be noted that: 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 modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides a buckle screw is connected to accurate steel pipe, includes hexagon cap (1), its characterized in that: the improved hexagonal bolt head structure is characterized in that a circular groove (2) is formed in the upper end face of the hexagonal cap (1), a handle (3) is connected to the upper end face of the circular groove (2) in a rotating mode, a first bolt head (4) is fixedly connected to the lower end face of the hexagonal cap (1), an expansion sleeve (6) is fixedly connected to one end, away from the hexagonal cap (1), of the first bolt head (4), a limiting sleeve (5) is fixedly sleeved on the outer wall of the expansion sleeve (6), the upper end face of the limiting sleeve (5) is fixedly connected to the lower end face of the first bolt head (4), external threads (7) are formed in the outer wall of the expansion sleeve (6), a fixing nut (8) is sleeved on the outer wall of one end, away from the first bolt head (4), of the expansion sleeve (6), a damping rubber sleeve (9) and a threaded connecting block (10) are fixedly sleeved on the inner wall of the expansion sleeve (6), the damping rubber sleeve, threaded connection piece (10) up end fixed connection is on the terminal surface under damping rubber cover (9), threaded connection piece (10) inner threaded connection has T type screw rod (11), terminal surface fixedly connected with second bolt head (12) under T type screw rod (11), T type screw rod (11) outer wall screw thread has cup jointed rubber circle cover (14), set up between terminal surface and second bolt head (12) up end under rubber circle cover (14) are located threaded connection piece (10), T type screw rod (11) upper end runs through threaded connection piece (10) and is rotationally connected with piston (15), spread groove (16) have been seted up to piston (15) inner.

2. The precision steel pipe connection buckle screw of claim 1, which is characterized in that: the limiting sleeve (5) is made of rubber materials.

3. The precision steel pipe connection buckle screw of claim 1, which is characterized in that: the length of the damping rubber sleeve (9) is not more than the length of the expansion sleeve (6) connected in the buckle mounting hole.

4. The precision steel pipe connection buckle screw of claim 1, which is characterized in that: the outer end of the T-shaped screw rod (11) is provided with an internal thread (13).

5. The precision steel pipe connection buckle screw of claim 1, which is characterized in that: and an annular connecting fillet (17) is fixedly arranged at the joint of the second bolt head (12) and the T-shaped screw rod (11).

6. The precision steel pipe connection buckle screw of claim 1, which is characterized in that: and hydraulic oil (18) is arranged at the upper end of the piston (15).