CN105157901B - A kind of reducing drilling tool internal thread automatic detection device - Google Patents
A kind of reducing drilling tool internal thread automatic detection device Download PDFInfo
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- CN105157901B CN105157901B CN201510559478.2A CN201510559478A CN105157901B CN 105157901 B CN105157901 B CN 105157901B CN 201510559478 A CN201510559478 A CN 201510559478A CN 105157901 B CN105157901 B CN 105157901B
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- mounting bracket
- drilling tool
- internal thread
- detection device
- automatic detection
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Abstract
The invention provides a kind of reducing drilling tool internal thread automatic detection device, including mounting bracket, guide rod, sensor, keeper and motor, mounting bracket has two relative end faces and the lateral surface between both ends of the surface, multiple mounting holes are offered on mounting bracket, mounting hole runs through the both ends of the surface of mounting bracket, and the central shaft of multiple mounting holes is the bus of one first conical surface；Guide rod is multiple and can slidably be arranged in mounting hole respectively；Sensor is first ends that are multiple and being connected to guide rod；Second end of keeper and each guide rod is movably connected with, and mounting bracket is between sensor and keeper；Motor is fixed on mounting bracket, and motor leading screw is connected between motor and keeper.The detection means of the present invention can be detected by automatic diameter changing to the stress concentration situation at each position of drilling tool internal thread, simple in construction, compact, easy to carry and use.
Description
Technical field
The present invention relates to a kind of thread detecting device, especially a kind of reducing for the detection of oil drilling tools internal thread bores
Has internal thread automatic detection device.
Background technology
In recent years, in petroleum drilling and mining, by reality is compeled, the exploitation for ultra-deep Holes of Complicated Wells is more and more important.Bore
Tool is the important component of oil drill string, be mainly used in passing power and and conveying drilling fluid, due to ultra-deep Complex Well Drilling
Working condition is very severe, and in drilling process, drilling rod, which bears tensile, compressive, bending, turns round impact shock in load and drilling process draws
The additional dynamic load risen, the FATIGUE FRACTURE PROBLEMS of tool joint screw thread position is more prominent, the spiral shell of tool joint under serious conditions
Line fatigue fracture is failed, and this occupies very big ratio in whole drilling tool failure accident, drilling well production is caused very severe
Influence, bring huge economic loss.
Drilling tool thread major cause of failure is that the working environment of drilling tool is severe, and the alternate load born is very big, due to
Drilling tool thread connecting portion is more fragile in itself, and its interface shape changes, and stress concentration is serious, while also occurs higher
Alternate stress, be the most dangerous position of stress, fatigue fracture easily occur.Therefore, it is necessary to understand drilling tool thread connecting portion
The stress concentration situation of position, with the stress concentration by reducing drilling tool thread connecting portion, to solve asking for drilling tool fracture failure
Topic.
The content of the invention
It is an object of the invention to provide a kind of reducing drilling tool internal thread automatic detection device, its can by automatic diameter changing come
Detect the stress concentration situation at each position of drilling tool internal thread.
To reach above-mentioned purpose, the present invention proposes a kind of reducing drilling tool internal thread automatic detection device, including：Installation
Frame, there is two relative end faces and the lateral surface between two end faces, multiple mounting holes are offered on the mounting bracket,
The mounting hole runs through the both ends of the surface of the mounting bracket, and the central shaft of multiple mounting holes is the bus of first conical surface；Lead
Bar, to be multiple and can slidably be arranged in the mounting hole respectively；Sensor, to be multiple and be connected to the of the guide rod
One end；Keeper, it is movably connected with the second end of each guide rod；Motor, it is fixed on the mounting bracket, the motor
Motor leading screw is connected between the keeper.
Reducing drilling tool internal thread automatic detection device as described above, wherein, the reducing drilling tool internal thread is automatic
Detection means also includes multiple support bars, and the support bar is fixed on the lateral surface of the mounting bracket, and from the mounting bracket
Extend towards the sensor, slideway is formed between each adjacent support bar, each sensor is respectively positioned at corresponding
It can slide in the slideway and along the slideway；The lateral surface of the support bar is respectively positioned on second conical surface, second conical surface
It is parallel with first conical surface.
Reducing drilling tool internal thread automatic detection device as described above, wherein, the mounting bracket is in truncated cone-shaped, the peace
The lateral surface shelved is parallel with first conical surface, the mounting bracket it is outer without leave close to one end of the sensor to away from institute
The one end for stating sensor gradually increases.
Reducing drilling tool internal thread automatic detection device as described above, wherein, it is recessed on the lateral surface of the mounting bracket
There are multiple mounting grooves, each support bar is respectively embedded into and is fixed in the corresponding mounting groove.
Reducing drilling tool internal thread automatic detection device as described above, wherein, it is discoidal that the keeper includes one
Fixed part and it is multiple extend radially outward the shaft-like locating detent to be formed from the annular outboard face of the fixed part respectively,
The other end of the motor leading screw is mutually fixed with the fixed part, is each passed through between the locating detent and the corresponding guide rod
One connecting rod is connected, and one end of the connecting rod is hinged with the guide rod, and the other end of the connecting rod is hinged with the locating detent.
Reducing drilling tool internal thread automatic detection device as described above, wherein, the mounting bracket is close to the positioning
A shield is fixed with the end face of part, the opening of the shield is fixed in the shield towards the mounting bracket, the motor,
The motor leading screw passes through the shield.
Reducing drilling tool internal thread automatic detection device as described above, wherein, one end of each guide rod is fixed respectively
There is a sensor frame, the lateral surface of the sensor frame is arc surface, and the lateral surface of the sensor frame is concavely provided with groove, institute
Sensor is stated to be respectively arranged in the groove.
Reducing drilling tool internal thread automatic detection device as described above, wherein, it is respectively and fixedly provided with each mounting hole
One linear bearing coaxial with the mounting hole, the guide rod pass through the linear bearing and can be along the axles of the linear bearing
To slip.
Reducing drilling tool internal thread automatic detection device as described above, wherein, the reducing drilling tool internal thread is automatic
Detection means also includes fixed disk and the multiple columns being connected between the fixed disk and the mounting bracket, the positioning
Part is between the fixed disk and the mounting bracket.
Reducing drilling tool internal thread automatic detection device as described above, wherein, the motor is fixed on the mounting bracket
End face middle part and between the mounting bracket and the keeper, the motor leading screw is fixed in the keeper
Portion, and positioned at the inner side of multiple guide rods.
The characteristics of reducing drilling tool internal thread automatic detection device of the present invention and advantage are：
1st, reducing drilling tool internal thread automatic detection device of the invention, by setting multiple inclined mounting holes, and will
Mounting hole is arranged to central shaft and is respectively positioned on the same conical surface so that and multiple guide rods being arranged in mounting hole also surround taper,
The moving direction of guide rod is the axial direction of mounting hole, when motor motor leading screw drives keeper axial movement, keeper
Axial movement of the guide rod along mounting hole is driven, multiple guide rods are realized in moving process radially to be gathered or radially extend out, so as to real
Existing automatic diameter changing, the detection diameter for being installed on the sensor formation of guide rod end also reduce or become therewith big, realize in drilling tool
The automatic detection of screw thread different parts, it is easy to detect, flexible, it is easy to use.
2nd, reducing drilling tool internal thread automatic detection device of the invention, by setting multiple support bars, when realizing detection
Support and fixation to detection means, the accuracy of steadiness and detection when can not only improve detection is easy to operation, can also lead to
Cross and change the thickness of support bar to expand the size range of drilling tool internal thread that the detection means of the present invention can detect.
3rd, reducing drilling tool internal thread automatic detection device of the invention is examined automatically for portable reducing drilling tool internal thread
Device is surveyed, it is simple in construction, compact, it is easy to carry.
Brief description of the drawings
The following drawings is only intended to, in doing schematic illustration and explanation to the present invention, not delimit the scope of the invention.Wherein：
Fig. 1 is the stereogram of the reducing drilling tool internal thread automatic detection device of the present invention；
Fig. 2 is the front view of the reducing drilling tool internal thread automatic detection device of the present invention；
Fig. 3 is the sectional view of the reducing drilling tool internal thread automatic detection device of the present invention；
Fig. 4 is the left view of reducing drilling tool internal thread automatic detection device of the invention in Fig. 2；
Fig. 5 is the right view of reducing drilling tool internal thread automatic detection device of the invention in Fig. 2；
Fig. 6 is the assembled state figure of sensor in the present invention, guide rod, connecting rod and keeper；
Fig. 7 is the assembled state figure of mounting bracket and support bar in the present invention；
Fig. 8 is the schematic diagram of support bar in the present invention.
Main element label declaration：
10 mounting brackets
The linear bearing of 11 mounting hole, 12 mounting groove 13
The linkage connector of 20 guide rod, 201 sensor connector 202
The groove of 30 sensor, 31 sensor frame 311
The lock-screw of 40 keeper, 41 fixed part 411
42 locating detents
The shield of 50 motor, 51 motor leading screw 52
The slideway of 60 support bar 61
70 connecting rods 701, which are shipped and resell on another market, 702 ships and resell on another market
The column of 80 fixed disk 81
Embodiment
In order to which technical characteristic, purpose and the effect of the present invention is more clearly understood, now control illustrates this hair
Bright embodiment.
As shown in Figure 1 and Figure 2, the present invention provides a kind of reducing drilling tool internal thread automatic detection device, for detecting taper
The each position of drilling tool internal thread stress concentration situation, the reducing drilling tool internal thread automatic detection device includes a mounting bracket
10th, multiple guide rods 20, multiple sensors 30, the motor 50 of positioning piece 40 and one.
Mounting bracket 10 for example in block or ring-type, and have two relative end faces and the lateral surface between both ends of the surface,
Offer multiple inclined mounting holes 11 on mounting bracket 10, mounting hole 11 runs through the both ends of the surface of mounting bracket 10, i.e., mounting hole 11 by
One end face of mounting bracket 10 is through to another end face, and the central shaft of multiple mounting holes 11 is respectively positioned on one first conical surface, and
It is the bus of first conical surface, i.e., multiple mounting holes 11 surround taper, and multiple guide rods 20 can slidably be arranged in multiple respectively
Mounting hole 11, i.e., multiple guide rods also surround taper, and the moving direction of guide rod 20 is 11 axial directions of mounting hole；Multiple sensors 30 divide
The first end of multiple guide rods 20 is not connected to, and for detecting the stress concentration situation of drilling tool internal thread, multiple sensors 30, which enclose, to be set
The diameter of the periphery of formation is to detect diameter；
Second end of keeper 40 and each guide rod 20 is movably connected with, and the second end of each guide rod 20 can be along positioning in other words
The radial slippage of part 40, it may also be said to the second end of multiple guide rods 20 can guide rod 20 along mounting hole 11 when sliding axially along footpath
To inwardly gathering or to external diffusion, mounting bracket 10 is between sensor 30 and keeper 40, so that compact-sized；Motor 50 is solid
It is scheduled on mounting bracket 10, using the driving part as detection means, motor 50 is preferably stepper motor, motor 50 and keeper 40
Between be connected with motor leading screw 51, for the power of motor to be passed into keeper, enable keeper along the axially left of mounting bracket
Move right.
The reducing drilling tool internal thread automatic detection device of the present invention, by setting multiple inclined mounting holes, and install
The central shaft in hole is respectively positioned on the same conical surface so that multiple guide rods being arranged in mounting hole also surround taper, the shifting of guide rod
Dynamic direction is the axial direction of mounting hole, and when motor motor leading screw drives keeper to move left and right, keeper can also drive and lead
Axial movement of the bar along mounting hole, multiple guide rods are realized in moving process radially to be gathered or radially extends out, to realize automatic become
Footpath, the detection diameter for being installed on the sensor formation of guide rod end also reduces or become therewith big, to realize to drilling tool internal thread not
With the automatic detection at position.
As shown in Fig. 3, Fig. 5, wherein, to ensure the smooth sliding of guide rod 20, one is respectively and fixedly provided with each mounting hole 11
The individual linear bearing 13 coaxial with mounting hole 11, linear bearing 13 are for example fixed by screws in mounting hole 11, and guide rod 20 is worn
Cross linear bearing 13 and can be slided under the drive of keeper 40 along the axial reciprocating of linear bearing 13.Linear bearing has to leading
Bar and sensor provide the effect being oriented to, while have the function that support, location guide, can guarantee that the linear motion of guide rod, make
The motion of guide rod and sensor is more steady, and detection more accurately, conveniently, avoids abrasion of the guide rod to mounting bracket, is easily installed use,
Cost is low.
As shown in Figure 7, Figure 8, in a preferred embodiment, reducing drilling tool internal thread automatic detection device also includes
Multiple support bars 60, it is supported on during for detecting on the inside of drilling tool internal thread, detection means is fixed on the inside of internal thread, support
Bar 60 is fixed on the lateral surface of mounting bracket 10, and self installation frame 10 extends towards sensor 30, and specifically mounting bracket 10 is outer
Side is concavely provided with multiple mounting grooves 12, and each support bar 60 is respectively embedded into and is fixed in corresponding mounting groove 12, each adjacent
Form slideway 61 between support bar 60, each sensor 30 is respectively in corresponding slideway 61, and in guide rod 20 along mounting hole 11
When sliding axially, each sensor 30 can move back and forth in the corresponding interior edge slideway 61 of slideway 61 respectively；
Wherein, the lateral surface of support bar 60 is respectively positioned on one second conical surface, and second conical surface is parallel with first conical surface, the second cone
Face is located at the outside of first conical surface, and during detection, support bar 60 is stretched into tool joint, and is supported on internal thread, to lead
The detection means of the fixed present invention in the glide direction of bar.Wherein the size of support bar can be according to the drilling tool thread of required detection
Size small range is changed, for example in use, can be inclined by changing the size (such as thickness) of support bar to change support bar
Arc surface (or circular conical surface) diameter that inclined-plane is formed, or pad is added to reach same in the binding face of support bar and mounting bracket
The effect of sample, to expand the size range for the drilling tool internal thread that the detection means of the present invention can detect.
Preferably, mounting bracket 10 is in the truncated cone-shaped of truncated cone-shaped, for example, intermediate openings, the lateral surface of mounting bracket 10 and first
The conical surface is parallel, mounting bracket 10 it is outer without leave close to one end of sensor 30 to close to one end of keeper 40 (or away from sensor
30 one end) gradually increase, i.e., sensor 30 is located at the miner diameter end of mounting bracket 10, and keeper 40 is located at the big footpath of mounting bracket 10
End, when keeper 40 towards during the direction movement away from mounting bracket 10, sensor 30 moves towards close to the direction of mounting bracket 10, sensing
Device 30, which encloses, to be set the detection diameter to be formed and gradually increases, when keeper 40 is towards close to the movement of the direction of mounting bracket 10, sensor 30
Moved towards the direction away from mounting bracket 10, sensor 30, which encloses, to be set the detection diameter to be formed and be gradually reduced, so as to realize automatic diameter changing.
As shown in fig. 6, in a feasible technical scheme, keeper 40 is for example in claw-like, including one discoidal solid
The annular outboard face for determining portion 41 and multiple self-fixed departments respectively 41 extends radially outward the shaft-like locating detent 42 to be formed,
The other end of motor leading screw 51 is fixed with the phase of fixed part 41, such as in the axial center hole of motor leading screw insertion fixed part, it is fixed
The side in portion radially offers the screw connected with centre bore, and screw is multiple and is uniformly distributed along the circumference of fixed part, more
Individual lock-screw 411 screws in screw and holds out against fixation from all directions by motor leading screw 51 respectively；Each locating detent 42 with it is corresponding
Guide rod 20 between be connected by a connecting rod 70, one end of connecting rod 70 and guide rod 20 are 701 be hinged by shipping and reselling on another market, connecting rod 70 it is another
One end is 702 be hinged with locating detent 42 by shipping and reselling on another market, and is specifically to ship and resell on another market 702 to pass through to realize being flexibly connected for guide rod and keeper
Two sides of connecting rod and locating detent, two sides are vertical with the both ends of the surface of fixed part, ship and resell on another market 701 with ship and resell on another market it is 702 parallel,
When keeper moves left and right, guide rod can rotate with respect to link rotatable, connecting rod energy relative positioning pawl, so that guide rod can be along calmly
The radial slippage of position part.
By setting link transmission structure, the diametrically motion of guide rod and keeper can not only be realized, connecting rod 70 is also
Play a part of transmitting power, and it is axially inconsistent with power direction to guide rod 20 and act the cushioning effect of power, or
An adjustment effect is played when saying and axially angle be present with power direction to guide rod, and also makes the knot of detection means using connecting rod
Structure is compacter, and motion is also more flexible.
But the movable connection structure of guide rod and keeper is not limited to that, such as in another feasible technical scheme
In, keeper 40 is in disk form, and multiple circumferentially distributed chutes, radial direction of the chute along keeper 40 are offered on keeper 40
Extension, the other end of guide rod 20 are connected in corresponding chute and can be along slides, by setting chute to realize guide rod with determining
The flexible connection of position part, when keeper moves left and right, the other end of guide rod can be in the radial slippage of chute interior edge keeper.
As shown in Fig. 4, Fig. 6, one end of each guide rod 20 is respectively fixed with a sensor frame 31, the lateral surface of sensor frame 31
It is approximately arc surface, the lateral surface of sensor frame 31 is concavely provided with groove 311, the groove 311 for example, square groove, sensor 31
It is individually fixed in groove 311, by the way that the lateral surface of sensor frame is arranged into arc surface, it is ensured that in sensor stand and drilling tool
The tooth top snug fit of screw thread, preferably fitting is realized, improve the accuracy of detection.
Wherein, the side wall of the groove 311 of sensor frame 31 is preferably higher than the lateral surface of (or being slightly above) sensor 30, with
Avoid detection when sensor and drilling tool internal thread between because mutually abrasion and caused by damage.
In addition, guide rod 20 is, for example, hollow stem, one end of guide rod 20 is connected by sensor connector 201 and sensor frame 31
Connect, pass through spiral shell with sensor frame 31 for example with interference fit, sensor connector 201 between sensor connector 201 and guide rod 20
Screw top extremely coordinates, and the other end of guide rod 20 is connected by linkage connector 202 with connecting rod 70, and guide rod 20 and linkage connector 202 are for example
It is connected through a screw thread, cable-through hole 203 is set respectively at the both ends of guide rod 20, is easy to the arrangement of signal wire, signal wire can be worn
In the more compact structure in guide rod, making detection means.
In the present invention, mounting hole 11, guide rod 20, connecting rod 70, the quantity of locating detent 42 (or chute) and sensor frame 31 are equal
It is identical, such as be 8, the quantity of support bar 60 is for example also 8.
Again as shown in figure 1, mounting bracket 10 is fixed with a shield 52, the opening of shield 52 on the end face close to keeper 40
Towards mounting bracket 10, motor 50 is fixed in shield 52, and motor leading screw 51 passes through shield 52, and wherein shield 52 can rise to motor 50
To protective effect.
Preferably, motor 50 is fixed on the middle part of the end face of mounting bracket 10 and between mounting bracket 10 and keeper 40,
Motor leading screw 51 is fixed on the middle part of keeper 40, and positioned at the inner side of multiple guide rods 20, is not only convenient for installing and uses, also make
Device overall structure is more compact.
Specifically, the top plate of the blind end of shield 52 is provided with multiple screwed holes, and motor 50 is fixed on shield by screwed hole
On cover 52, the openend of shield 52 is fixed on mounting bracket 10 further through screw, and motor leading screw 51 is applied in the center of motor 50
It is threadedly coupled in screwed hole with motor.
As shown in Figure 1 to Figure 3, reducing drilling tool internal thread automatic detection device also includes a fixed disk 80 and connection
Multiple columns 81 between fixed disk 80 and mounting bracket 10, column 81 are, for example, 4, and between fixed disk 80, Yi Jiyu
Using threaded connection between mounting bracket 10, keeper 40 is between fixed disk 80 and mounting bracket 10.Fixed disk 80 and column
81 form the support of the present invention, can function as handrail with link socket, when detection on fixed disk 80.
The reducing drilling tool internal thread automatic detection device of the present invention, when detecting drilling tool thread size, start motor 50,
Motor leading screw 51 moves in the axial direction under the drive that the inner nut of motor 50 rotates, and the axial movement of motor leading screw 51 drives positioning
Part 40 moves together, so as to promote whole testing agency (including connecting rod 70, guide rod 20 and sensor 30) motion, i.e. keeper 40
Under the drive of motor leading screw 51, connecting rod 70 is promoted to move, in the presence of connecting rod 70, axle of the guide rod 20 along linear bearing 13
To motion, guide rod 20 just realizes the reducing (or change of sensor detection diameter) of automatic detection device, sensing while moving
The conical surface that the can of sensor 30 of the inside of device frame 31 is formed along multiple support bars 60 gathers signal, realizes to drilling tool internal thread
The detection of the stress concentration situation at each position.
The physical dimension of reducing drilling tool internal thread automatic detection device of the invention, it is that foundation is detected when implementing
Depending on the physical dimension of drilling rod.If the drilling tool thread size of required detection is corresponding with the automatic detection device of machined completion
Drilling tool thread size difference is larger, it is proposed that re-works automatic detection device for the drilling tool thread size of required detection；Such as
The drilling tool thread size of detection is slightly bigger than drilling tool thread size corresponding to automatic detection device needed for fruit, can be by each
Pad is added between support bar 60 and mounting bracket 10 to expand the arc surface (or circular conical surface) that multiple support rod outer surfaces are formed
Size, with the drilling tool thread size of detection needed for adapting to, or the bigger support of size (such as thickness) can also be changed
Bar, with the slightly larger drilling tool thread size of detected size.
The schematical embodiment of the present invention is the foregoing is only, is not limited to the scope of the present invention.It is any
Those skilled in the art, the equivalent variations made on the premise of the design of the present invention and principle is not departed from and modification, all should
Belong to the scope of protection of the invention.And it should be noted that the present invention each part be not limited in above-mentioned entirety should
With, each technical characteristic described in specification of the invention can according to be actually needed selection one individually use or select it is multinomial
Combine use, and therefore, the present invention covers the other combinations relevant with this case inventive point and concrete application in the nature of things.
Claims (10)
1. a kind of reducing drilling tool internal thread automatic detection device, it is characterised in that the reducing drilling tool internal thread is examined automatically
Surveying device includes：
Mounting bracket, there is two relative end faces and the lateral surface between two end faces, offered on the mounting bracket more
Individual mounting hole, the mounting hole run through the both ends of the surface of the mounting bracket, and the central shaft of multiple mounting holes is first conical surface
Bus；
Guide rod is multiple and can axially slidably be arranged in the mounting hole along the mounting hole respectively；
Sensor, it is first ends that are multiple and being connected to the guide rod；
Keeper, it is movably connected with the second end of each guide rod；
Motor, it is fixed on the mounting bracket, motor leading screw is connected between the motor and the keeper.
2. reducing drilling tool internal thread automatic detection device as claimed in claim 1, it is characterised in that the reducing drilling tool
Internal thread automatic detection device also includes multiple support bars, and the support bar is fixed on the lateral surface of the mounting bracket, and from
The mounting bracket extends towards the sensor, and slideway, each sensor difference are formed between each adjacent support bar
It can slide in the corresponding slideway and along the slideway；
The lateral surface of the support bar is respectively positioned on second conical surface, and second conical surface is parallel with first conical surface.
3. reducing drilling tool internal thread automatic detection device as claimed in claim 2, it is characterised in that the mounting bracket is in circle
Platform shape, the lateral surface of the mounting bracket is parallel with first conical surface, the mounting bracket it is outer without leave close to the sensor
One end to one end away from the sensor gradually increases.
4. reducing drilling tool internal thread automatic detection device as claimed in claim 2, it is characterised in that outside the mounting bracket
Side is concavely provided with multiple mounting grooves, and each support bar is respectively embedded into and is fixed in the corresponding mounting groove.
5. the reducing drilling tool internal thread automatic detection device as described in any one of Claims 1-4, it is characterised in that described
Keeper includes a discoidal fixed part and multiple extended radially outward respectively from the annular outboard face of the fixed part
The shaft-like locating detent formed, the other end and the fixed part of the motor leading screw mutually fix, each the locating detent with it is right
Be connected between the guide rod answered by a connecting rod, one end of the connecting rod is hinged with the guide rod, the connecting rod it is another
End is hinged with the locating detent.
6. reducing drilling tool internal thread automatic detection device as claimed in claim 1, it is characterised in that the mounting bracket by
A shield is fixed with the end face of the nearly keeper, the opening of the shield is fixed on towards the mounting bracket, the motor
In the shield, the motor leading screw passes through the shield.
7. reducing drilling tool internal thread automatic detection device as claimed in claim 1, it is characterised in that the one of each guide rod
End is respectively fixed with a sensor frame, and the lateral surface of the sensor frame is arc surface, the lateral surface fovea superior of the sensor frame
Provided with groove, the sensor is respectively arranged in the groove.
8. reducing drilling tool internal thread automatic detection device as claimed in claim 1, it is characterised in that each mounting hole
Inside it is respectively and fixedly provided with a linear bearing coaxial with the mounting hole, the guide rod is through the linear bearing and can be along described straight
What bobbin was held slides axially.
9. reducing drilling tool internal thread automatic detection device as claimed in claim 1, it is characterised in that the reducing drilling tool
Internal thread automatic detection device also includes fixed disk and is connected to multiple vertical between the fixed disk and the mounting bracket
Post, the keeper is between the fixed disk and the mounting bracket.
10. reducing drilling tool internal thread automatic detection device as claimed in claim 1, it is characterised in that the motor is fixed
At the middle part of the end face of the mounting bracket and between the mounting bracket and the keeper, the motor leading screw is fixed on institute
The middle part of keeper is stated, and positioned at the inner side of multiple guide rods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510559478.2A CN105157901B (en) | 2015-09-06 | 2015-09-06 | A kind of reducing drilling tool internal thread automatic detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510559478.2A CN105157901B (en) | 2015-09-06 | 2015-09-06 | A kind of reducing drilling tool internal thread automatic detection device |
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| Publication Number | Publication Date |
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| CN105157901A CN105157901A (en) | 2015-12-16 |
| CN105157901B true CN105157901B (en) | 2017-11-14 |
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| CN201510559478.2A Active CN105157901B (en) | 2015-09-06 | 2015-09-06 | A kind of reducing drilling tool internal thread automatic detection device |
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| CN106501354A (en) * | 2016-10-17 | 2017-03-15 | 中海石油(中国)有限公司 | A kind of portable diameter changing drilling tool external screw thread automatic detection device |
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| JP2007248264A (en) * | 2006-03-16 | 2007-09-27 | Ntn Corp | Measurement of bearing torque of shell type needle roller bearing without inner ring |
| CN103884457B (en) * | 2012-12-21 | 2015-10-21 | 中国石油大学(北京) | Based on the rotatable pick-up unit of drilling tool internal thread rotation of Metal magnetic memory |
| CN103076127B (en) * | 2012-12-28 | 2014-12-10 | 三一集团有限公司 | Pin roll detection device and engineering machine provided with same |
| CN203231998U (en) * | 2013-01-30 | 2013-10-09 | 中国石油天然气股份有限公司 | External detection device for stress conditions of internal threads of drilling tools |
| CN104198577B (en) * | 2014-09-18 | 2017-03-29 | 中国石油大学(北京) | Drilling tool damages wellhead detecting device |
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