CN106516412A - Protective method for internal thread of major-diameter workpiece - Google Patents
Protective method for internal thread of major-diameter workpiece Download PDFInfo
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- CN106516412A CN106516412A CN201510573190.0A CN201510573190A CN106516412A CN 106516412 A CN106516412 A CN 106516412A CN 201510573190 A CN201510573190 A CN 201510573190A CN 106516412 A CN106516412 A CN 106516412A
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- shield body
- workpiece
- thread
- protective cover
- top surface
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Abstract
The invention discloses a protective method for an internal thread of a major-diameter workpiece. A protective cover body is adopted and is composed of a top face (1) and a side wall (2). The whole protective cover body is in a circular truncated cone shape, the interior of the protective cover body is of a cavity structure, and an external thread matched with the internal thread of the workpiece is arranged on the outer surface of the side wall (2). The protective method can effectively reduce deformation of the thread in the radial direction and the axial direction, the thread damage caused by collisions of workpieces is prevented, and meanwhile the internal thread can be effectively maintained. By means of a stacking ring, the protective cover body can be transported and stored conveniently; by means of stacking platforms, the distance between stacking rings of protective cover bodies can be kept, and a tool or a hand can stretch into the part between the protective cover bodies conveniently; and torsion arms between hollowed-out areas facilitate dismounting of the protective cover body, the hollowed-out areas can also serve as oil filler holes at the same time, and long-term storage, transportation and maintenance of the workpiece are facilitated.
Description
Technical field
The present invention relates to the workpiece fence after a kind of steel processing, specifically refers to a kind of means of defence of large-diameter workpiece female thread.
Background technology
In the middle of the parts of petroleum machinery, particularly in subsurface tool, most of workpiece is cylindrical on the whole, such as helicoid hydraulic motor, drilling jar, super bumper jar, normal core-extracting tool, hydraulic accelerator, fishing cup, strong magnetic die, fishing tap, box tap, reacting cycle is salvaged blue, returnable slip overshot, lifting sub, monoblock type short drill pipe, kelly cock, sword-like back-pressure valve, drilling tool stabilizer etc., above workpiece is made by machining using forging blank, the two ends of its shaping workpiece or wherein one end have female thread or external screw thread.Wherein helicoid hydraulic motor is one kind with drilling fluid as power, liquid pressure energy is switched to the positive displacement mud motor of mechanical energy, enter section's motor when the mud that slush pump is pumped out flows through bypass valve, certain pressure differential is formed in the import and export of motor, drive rotor is rotated around the axis of stator, and rotating speed and moment of torsion are passed to into drill bit by universal drive shaft and power transmission shaft, so as to realize drillng operation；Lifting sub is a kind of instrument for removing drill collar, and it is a short drill pipe, is connected on the screw thread of drill collar to be made a trip with elevator for removing during drill collar；For the overall dimensions of workpiece; the thickness of the female thread at its two ends, female thread width it is less; therefore; in the maintenance after Workpiece shaping with transportation; it is required to carefully protect the female thread of workpiece; damaged with the external screw thread for preventing the collision because of workpiece from bringing; once the thread damage of workpiece; sealing property will be caused to reduce, or even workpiece can not be used, and cause to scrap; and; workpiece has long time using centre from being molded into, if female thread maintenance is improper, it will the phenomenon such as get rusty, corrode.
The content of the invention
It is an object of the invention to overcome the external screw thread of cylindric workpiece workpiece after machining of the current petroleum machinery screw thread in transport and storing process to be difficult to the problem maintained, there is provided a kind of means of defence of large-diameter workpiece female thread.
The purpose of the present invention is achieved through the following technical solutions：
A kind of means of defence of large-diameter workpiece female thread, including shield body, described shield body is made up of top surface and side wall, and overall in round table-like, and it is cavity structure which is internal, and in side, the outer surface of wall is provided with the external screw thread matched with the female thread of workpiece.Shield body is formed by connecting by top surface and side wall, top surface is circle, side wall connects and composes round table-like, top surface is arranged on top side wall, the external screw thread matched with the female thread of workpiece is provided with side-wall outer side, during use, shield body is placed on into workpiece end, and rotate shield body, the screw thread of shield body is coordinated with the screw thread of workpiece, after the screw thread of workpiece is all included in vivo by shield body, in the thread pitch of the embedded surface of the work of the screw thread of shield body, effectively can reduce screw thread radial direction and axial direction on deformation, prevent the thread damage which occurs because of collision, simultaneously, when installing, machine oil is coated on the screw thread of shield body, after installing, machine oil is coated in thread surface, reach the purpose of maintenance.
Described sidewall bottom is connected with the stacking ring parallel with the top surface of shield body.As shield body is in round table-like, occupy certain spatial volume, for the ease of the transport and storage of shield body, in shield body side, the bottom of wall is provided with stacking ring, the internal diameter of stacking ring is matched with the diameter of shield body sidewall bottom, stacking ring it is parallel with the top surface of shield body.
At least provided with two piling beds on the stacking ring, the piling bed is evenly distributed on the upper surface of stacking ring.When shield body is stacked, shield body can be compressed by the gravity of its own, cause the taking-up of shield body difficult, in order to overcome the difficulty for being difficult to take out, piling bed is provided with stacking ring, piling bed can keep the distance between stacking ring of shield body, be easy to instrument or handss to stretch between shield body, reached with this and be easy to separate purpose.
Described piling bed is three.Preferably, piling bed is set to three, three piling beds are evenly distributed on stacking ring, and according to the principle that triangle is stable, three points can uniformly bear self gravitation, it is ensured that the balance of itself stacking, it is to avoid the generation collapsed.
The shield body top surface at least provided with two vacancy sections through top surface, the top surface between vacancy section is torque arm.For the ease of the dismounting of shield body, shield body top surface at least provided with two vacancy sections through top surface, summit portion between vacancy section forms torque arm, during use, handss are inserted at least two vacancy sections simultaneously, and the torque arm between vacancy section is turned, torque arm drives shield body to rotate the dismounting for being capable of achieving shield body.
The vacancy section is four, and is uniformly distributed in the top surface of shield body, and the torque arm is mutually perpendicular to and connects integral.Four void regions are evenly distributed on the top surface of shield body, and symmetrical with regard to end face center, and the torque arm between four void regions forms " ten " font in overlook direction, thus, being both easy to twisting, also prevent take up more spatial volumes.
The present invention compared with prior art, has the following advantages and advantages：
A kind of means of defence of large-diameter workpiece female thread of 1 present invention, shield body is on the whole in round table-like, the outside of its side wall is provided with external screw thread, in the thread pitch of the embedded surface of the work of the screw thread of shield body, effectively can reduce screw thread radial direction and axial direction on deformation, prevent the thread damage which occurs because of collision；
A kind of means of defence of large-diameter workpiece female thread of 2 present invention, in shield body side, the bottom of wall is provided with stacking ring, is easy to the transport and storage of shield body；
A kind of means of defence of large-diameter workpiece female thread of 3 present invention, piling bed is provided with stacking ring, piling bed can keep the distance between stacking ring of shield body, be easy to instrument or handss to stretch between shield body, reached with this and be easy to separate purpose；
4 are provided with void region in top surface, and the torque arm between void region is easy to the dismounting of shield body, void region also simultaneously as oil filler point, to be conducive to longer-term storage and transport, the maintenance of workpiece.
Description of the drawings
Fig. 1 is schematic structural view of the invention.
Labelling and corresponding parts title in accompanying drawing：
1- top surfaces, 2- sides wall, 3- stacking rings, 4- piling beds, 5- vacancy sections, 6- torque arm.
Specific embodiment
With reference to embodiment, the present invention is described in further detail, but embodiments of the present invention not limited to this.
Embodiment
As shown in Figure 1, a kind of means of defence of large-diameter workpiece female thread of the present invention, including shield body, shield body is made up of top surface 1 and side wall 2, and which generally lacks the round table-like of bottom surface, in shield body side, the outer surface of wall is provided with external screw thread, the screw thread is matched with the female thread of workpiece end, is provided with four void regions 5 on top surface 1, and top surface 1 is run through in void region 5, and with regard to the centrosymmetry of top surface 1,1 part of top surface between void region 5 is torque arm 6；In side, the lower end of wall is connected with the stacking ring 3 parallel with top surface 1, stacking ring 3 is annular in shape, its internal diameter is matched with the diameter of shield body bottom, and the upper surface of stacking ring 3 is provided with three piling beds 4 for protruding from stacking ring 3, and three piling beds 4 are evenly distributed on stacking ring 3.
As described above, the present invention just can be realized well.
Claims (6)
1. a kind of means of defence of large-diameter workpiece female thread, it is characterised in that：Including shield body, described shield body is by top surface（1）With side wall（2）Constitute, and entirety is in round table-like, it is cavity structure which is internal, in side wall（2）Outer surface be provided with the external screw thread matched with the female thread of workpiece, shield body is placed on into workpiece end, and rotate shield body, the screw thread of shield body is coordinated with the screw thread of workpiece, after the screw thread of workpiece is all included in vivo by shield body, in the thread pitch of the embedded surface of the work of the screw thread of shield body, effectively can reduce screw thread radial direction and axial direction on deformation, prevent the thread damage which occurs because of collision, simultaneously, when installing, machine oil is coated on the screw thread of shield body, after installing, machine oil is coated in thread surface, reach the purpose of maintenance.
2. the means of defence of a kind of large-diameter workpiece female thread according to claim 1, it is characterised in that：Described side wall（2）Bottom is connected with the top surface with shield body（1）Parallel stacking ring（3）.
3. the means of defence of a kind of large-diameter workpiece female thread according to claim 2, it is characterised in that：In the stacking ring（3）On at least provided with two piling beds（4）, the piling bed（4）It is evenly distributed on stacking ring（3）Upper surface.
4. the means of defence of a kind of large-diameter workpiece female thread according to claim 3, it is characterised in that：Described piling bed（4）For three.
5. the means of defence of a kind of large-diameter workpiece female thread as claimed in any of claims 1 to 4, it is characterised in that：In the top surface of the shield body（1）At least provided with two through top surface（1）Vacancy section（5）, vacancy section（5）Between top surface（1）For torque arm（6）.
6. the means of defence of a kind of large-diameter workpiece female thread according to claim 5, it is characterised in that：The vacancy section（5）For four, and it is uniformly distributed in the top surface of shield body（1）, the torque arm（6）It is mutually perpendicular to and connects and is integral.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510573190.0A CN106516412A (en) | 2015-09-10 | 2015-09-10 | Protective method for internal thread of major-diameter workpiece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510573190.0A CN106516412A (en) | 2015-09-10 | 2015-09-10 | Protective method for internal thread of major-diameter workpiece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106516412A true CN106516412A (en) | 2017-03-22 |
Family
ID=58345892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510573190.0A Pending CN106516412A (en) | 2015-09-10 | 2015-09-10 | Protective method for internal thread of major-diameter workpiece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106516412A (en) |
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2015
- 2015-09-10 CN CN201510573190.0A patent/CN106516412A/en active Pending
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170322 |