CN207661276U - A kind of pipe end protective device - Google Patents

Abstract

The utility model discloses a kind of pipe end protective devices, belong to Machine guarding technical field.Including sheath, sliding block, objective table, screw rod, rotary screw, the set junction of sheath is inside and outside double-layer circular structure, for placing pipe end to be protected between inner ring and outer shroud, four holders are arranged in inner ring periphery at equal intervals, gap between adjacent stent is for placing sliding block, sliding block quantity is four, it is contacted to the inclined inclined surface of objective table center position by bottom between objective table and four sliding blocks, sliding block is equipped with the corresponding Elliptic Cylinder through-hole in position, sheath is equipped with cylinder through-hole corresponding with Elliptic Cylinder lead to the hole site, a screw rod is designed in every group of Elliptic Cylinder through-hole and cylinder through-hole, rotary screw is threadedly coupled with sheath, the top surface of the bottom contact objective table of rotary screw.The utility model pipe end protective device realizes the purpose for carrying out effective protection to the pipe end of seamless pipe, has the characteristics that production cost is low, screens effect is good, easy to operate.

Description

A kind of pipe end protective device

Technical field

The utility model is related to a kind of pipe end protective devices, belong to Machine guarding technical field.

Background technology

The exploitation of oil and natural gas needs more casings to be attached by screw thread, to ensure bonding strength and airtight Property, pipe end needs to carry out screw thread process, but in the transportational process of seamless pipe, due to mutually colliding with, the screw thread at pipe end is easy Damage, causes not being attached between two seamless pipes.Common protective device is to do a simple screw thread protection ring, due to There is no unique screens locking device, pipe end protection ring to be easy to fall off.

Utility model content

The purpose of this utility model is to provide a kind of pipe end protective devices, devise a kind of pipe end external screw thread protection dress It sets, which pushes objective table deeply to move, force the inner wall of four ram extrusion seamless pipes by precession rotary screw, real The screens of existing sheath and seamless pipe is locked, and achievees the purpose that protect pipe end.

Specifically, pipe end protective device, including sheath, the protective device further include sliding block, objective table, screw rod, rotation The set junction of screw, the sheath is inside and outside double-layer circular structure, for placing pipe end to be protected, inner ring between inner ring and outer shroud Four holders are arranged in periphery at equal intervals, and the gap between adjacent stent is four for placing sliding block, sliding block quantity, the loading It is contacted to the inclined inclined surface of objective table center position by bottom between platform and four sliding blocks, it is corresponding that sliding block is equipped with position Elliptic Cylinder through-hole, sheath be equipped with cylinder through-hole corresponding with Elliptic Cylinder lead to the hole site, every group of Elliptic Cylinder through-hole and A screw rod is designed in cylinder through-hole, rotary screw is threadedly coupled with sheath, the bottom contact objective table of rotary screw Top surface.

Further, the holder is rectangular parallelepiped structure.

Further, the rotary screw bottom is equipped with cylinder end, and the loading countertop is equipped with and cylinder body end Corresponding pit.

Further, the screw rod is equipped with nut.

The beneficial effects of the utility model are：The utility model designs a kind of pipe end protective device, with prior art phase Than haing the following advantages：

Material is common, easy to process, and therefore, the production cost of the device is relatively low；

Since package unit is symmetrical structure, by precession rotary screw, pushes objective table deeply to move, force four cunnings The inner wall of block squeezing seamless pipe realizes that the screens of sheath and seamless pipe is locked, and therefore, the screens effect of the device is preferable；

By precession or rotary screw is screwed out, four sliding blocks can be pushed to carry out telescopic moving in sheath, is squeezed or de- Inner wall from seamless pipe realizes locking or the opening of sheath and seamless pipe, and therefore, the operation of the device is relatively convenient；

By the utility model pipe end protective device, the purpose that effective protection is carried out to the pipe end of seamless pipe, tool are realized Have the characteristics that production cost is low, screens effect is good, easy to operate.

Description of the drawings

Fig. 1 is the overlooking structure diagram of pipe end protective device；

Fig. 2 is the main structure diagram of pipe end protective device；

Fig. 3 is the schematic cross-sectional view along the faces A-A in Fig. 1；

Fig. 4 is the schematic cross-sectional view along the faces B-B in Fig. 2；

Reference numeral is as follows：The rectangular body support frame of 1- sheaths, 101-, 2- screw rods, 3- rotary screws, 4- nuts, 5- sliding blocks, 501- Elliptic Cylinders through-hole, 6- objective tables, 7- seamless pipes.

Specific implementation mode

Specific embodiment of the present utility model is illustrated below in conjunction with the accompanying drawings：

Utility model device is by a rotary screw 3, four of objective table 6, one of sliding block 5, one of sheath 1, four Screw rod 2 and four nuts 4 form.

Sheath 1 is tube body symmetrical structure, and one end of tube body is flush end, and the other end of tube body is internal and external double-circular structure, waits protecting Pillar end is placed between inner ring and outer shroud, and inner ring is along the circumferential direction uniformly provided with four rectangular body support frames 101 and four cylinders Body through-hole, spaced arrangement between four rectangular body support frames 101 and four cylinder through-holes, four cylinder through-holes are for pacifying Screw rod 2 is inserted, is attached with sliding block 5, and the height of four rectangular body support frames 101 should be greater than the thickness of sliding block 5, to facilitate sliding block 5 sliding sets there are one screw hole in the axis of sheath 1, is used for twist-on rotary screw 3.

Sliding block 5 is segment symmetrical structure, sets there are one Elliptic Cylinder through-hole 501, is used at the center of each segment Screw rod 2, Elliptic Cylinder through-hole 501 is assigned to ensure that sliding block 5 can radially carry out interspersed movement, it is thick on the inner ring surface edge of segment There is a gradient in degree direction.

Objective table 6 is round platform symmetrical structure, is set there are one cylinder pit along axis in one end of the larger disc of round platform, Flush end cylinder for bearing rotary screw 3, and the side grade of round platform is identical as the side grade of sliding block 5.

Rotary screw 3 is cylinder symmetrical structure, is combined by rib body, threaded cylinder, flush end cylinder three parts It is formed, the cross-sectional shape of rib body is regular hexagon, and rib body can be screwed into the spiral shell of sheath as force side, threaded cylinder In hole.Flush end cylinder can be inserted in the cylinder pit of objective table and be squeezed.

Screw rod 2 and nut 4 are standard component.

Assemble method：As shown in Figures 1 to 4, first by the flush end of sheath 1 in upper steady placement, then by four sliding blocks 5 The gradient it is upper respectively be inserted into sheath 1 four rectangular body support frames between, ensure through-hole centering, then in each through-hole under A screw rod 2 is respectively assigned upwards, then in the other end of every screw rod 2 one nut 4 of each twist-on.

Then by the cylinder pit of objective table 6 it is upper be placed on four sliding blocks 5 between, ensure gradient centering, then exist One rotary screw 3 of twist-on in the screw hole of sheath 1, ensure rotary screw 3 flush end cylinder enter objective table cylinder it is recessed Hole.

So, package unit is completed, and can be come into operation.

Application method：Seamless pipe 7 is placed vertically first, assembled package unit is then stably placed at seamless pipe 7 upper end ensures that the axis of package unit is overlapped with the axis of seamless pipe 7, then precession rotary screw 3, push objective table 6 to Lower movement forces four sliding blocks 5 to be moved radially outwards, the inner wall of squeezing seamless pipe 7, realizes the screens of sheath 1 and seamless pipe 7 Locking,

So, the upper end of seamless pipe 7 is protected by package unit.Then the overturning of seamless pipe 7 180 degree is stood upside down vertically It places, another pipe end that assembled other set device can be steadily inserted into seamless pipe 7 with same method carries out screens Locking, pipe end protect task to complete.

By embodiment as can be seen that pipe end protective device has the spy that production cost is low, screens effect is good, easy to operate Point.

The above is preferred embodiments of the present invention, it is noted that for the ordinary skill of the art For personnel, under the premise of not departing from principle described in the utility model, it can also make several improvements and retouch, these improvement The scope of protection of the utility model is also should be regarded as with retouching.

Claims (4)

1. a kind of pipe end protective device, including sheath, which is characterized in that the protective device further includes sliding block, objective table, spiral shell The set junction of bar, rotary screw, the sheath is inside and outside double-layer circular structure, for placing pipe to be protected between inner ring and outer shroud Four holders are arranged in end, inner ring periphery at equal intervals, and the gap between adjacent stent is four for placing sliding block, sliding block quantity, It is contacted to the inclined inclined surface of objective table center position by bottom between the objective table and four sliding blocks, sliding block is equipped with position Corresponding Elliptic Cylinder through-hole is set, sheath is equipped with cylinder through-hole corresponding with Elliptic Cylinder lead to the hole site, every group of cylindroid A screw rod is designed in body through-hole and cylinder through-hole, rotary screw is threadedly coupled with sheath, the bottom contact of rotary screw The top surface of objective table.

2. pipe end protective device as described in claim 1, which is characterized in that the holder is rectangular parallelepiped structure.

3. pipe end protective device as described in claim 1, which is characterized in that the rotary screw bottom is equipped with cylinder body end Head, the loading countertop are equipped with pit corresponding with cylinder end.

4. pipe end protective device as described in claim 1, which is characterized in that the screw rod is equipped with nut.