CN205400582U - Moment of torsion overload protection instrument - Google Patents
Moment of torsion overload protection instrument Download PDFInfo
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- CN205400582U CN205400582U CN201620140796.5U CN201620140796U CN205400582U CN 205400582 U CN205400582 U CN 205400582U CN 201620140796 U CN201620140796 U CN 201620140796U CN 205400582 U CN205400582 U CN 205400582U
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Abstract
The utility model discloses a moment of torsion overload protection instrument, a serial communication port, including power urceolus, excess loading protector, bearing assembly, sealing assembly and output shaft, excess loading protector includes the center pin, goes up spline, lower part transmission, spring and lock nut, and it is all coaxial with the center pin to go up spline, lower part transmission, spring and lock nut, go up spline and lower spline through drive splines transmission moment of torsion between one, the power urceolus links to each other with excess loading protector, and the excess loading protector lower part links bearing assembly and sealing assembly in proper order, and the center pin links to each other with the output shaft. The utility model discloses a going up the sliding contact of contact surface between spline and the lower part transmission, having realized the control of spring compression power to the torque value, when battery temperature exceedes the overload moment of torsion of setting for, realize inside rotatoryly, the downhole tool that prevents too big moment of torsion centering spindle connection causes the injury, as battery temperature during no longer than the separation moment of torsion of settlement, can last output torque, the completion operation.
Description
Technical field
This utility model relates to oil-gas field development field, is specifically related to a kind of torque overload protection instrument.
Background technology
In oilfield exploitation procedure, drilling well and well workover are main job step, it is necessary to use rotating disk, top to drive and make bit break rock from ground to drill bit, or use screw motor etc. from down-hole, drill bit to provide rotation broken rock.No matter which kind of mode, it is all finally transfer torque to drill bit (or other BHAs) by drilling rod or drill collar.In drilling process; different stratum is applied to the resistance that drill bit is different, and this resistance makes the moment of torsion that drill string transmits exceed normal drilling torque, it is possible to cause infringement or the fracture of drill string; and drilling rod can only transmit certain moment of torsion mostly, during excessive torque, downhole tool can not be carried out overload protection.Can only be pulled out of hole replacing damage instrument after downhole tool damages, and adds drill string and hoists number of times, waste drillng operation time and expense.
Existing part torque overload protects instrument on the market at present; including ball-type, friction-type, fluid pressure type, pneumatic type, electromagnetic type etc.; but all there is the problem that volume is relatively big, structure is complicated, manufacture is safeguarded and use cost is higher in these protectors, it is impossible to meets the demand of underground work narrow space, work under bad environment.
Utility model content
For the problems referred to above; the purpose of this utility model is in that the deficiency overcoming prior art to exist, it is provided that a kind of compact, simple in construction, and assembling takes up room little; the torque overload protection instrument that manufacturing cost and use cost is low, for solving in drilling process because the drill string of the excessive generation of moment of torsion destroys.
This utility model lower end is connected with downhole tool, and upper end connects with drill string.Its technical scheme is that moment of torsion is decomposed into the product of power and the arm of force, realizes the adjustment to moment of torsion by spring.After moment of torsion exceedes the Overload torque of setting so that drill string torque cannot be delivered to downhole tool.
The technical solution of the utility model is achieved in that
A kind of torque overload protection instrument, including power urceolus, overload protection arrangement, bearing assembly, seal assembly and output shaft；Described overload protection arrangement includes central shaft, upper spline, bottom driving device, spring and locking nut, and upper spline, bottom driving device, spring and locking nut are all coaxial with central shaft；Described power urceolus is connected with overload protection arrangement, and overload protection arrangement bottom connects bearing assembly and seal assembly successively, and central shaft is connected with output shaft；
Described central shaft lower end is provided with boss B and screw thread A, and upper end is provided with step and boss A；
It is contact surface B that described upper spline one section is provided with circle equally distributed boss C, a boss C top, and boss C gap forms groove C；Described upper spline is installed on central shaft, is fixed by boss A, and upper end and step push against；Described upper spline has cylindrical outer surface A, is provided with boss A, boss A outside and embeds keyway corresponding on power urceolus outside the radial direction of surface A, coordinates transmission moment of torsion.
Further, described bottom driving device is made up of drive splines and lower spline one, and being provided with radial equally distributed boss D, the boss D side of a circle outside described drive splines is contact surface A, the contact surface B of upper spline embeds in the contact surface A of drive splines, and cooperate transmission moment of torsion；Described lower spline section one by one is provided with circle equally distributed groove D, a boss D and embeds in groove D, and cooperate transmission moment of torsion；
The contact surface B of described upper spline is the male and fomale(M&F) that is connected with the contact surface A of drive splines；
Described spring one end and the end contact of drive splines, make the sliding friction between the contact surface B of upper spline and the contact surface A of drive splines change into axial displacement, and then convert the compression displacement of spring to；
In axial direction being provided with groove D on one end face of described lower spline one, the inner surface at lower spline one is radially provided with groove E, boss B and embeds groove E, and cooperate transmission moment of torsion.
Further; described torque overload protection instrument clockwise or counterclockwise and moment of torsion less than set overload protection moment of torsion time; power urceolus delivers torque to upper spline; upper spline is come in contact by the contact surface A of contact surface B Yu drive splines; drive drive splines to rotate by frictional force and circumference thrust, and then drive lower spline one to rotate transmission moment of torsion；When rotation torque exceedes the overload protection moment of torsion of setting, the moment of torsion that upper spline is subject to is excessive, axial thrust between contact surface B and contact surface A is more than frictional force and circumference thrust, axial thrust drives drive splines extrusion spring, the contact surface B of upper spline and the contact surface A of drive splines is made to relatively rotate, and do not drive the rotation of lower spline one, sliding friction between upper spline and lower spline one changes into axial displacement, thus converting the compression displacement of spring to, cannot transfer torque on central shaft, thus moment of torsion cannot be passed by central shaft, reach the purpose of protection bottom downhole tool.
Further, the contact surface B of described upper spline and the contact surface A of drive splines is waveform arc surface or zigzag inclined-plane.
Further, described bottom driving device is made up of lower spline two and locking nut；Described lower spline two top is provided with circle equally distributed groove F, a groove F and is provided with convex shaped arc face D；Lower spline two mid diameter is less than top；Described locking nut is installed on center shaft by screw thread A；Described ring spring is wound in the middle part of lower spline two, and one end pushes against the shaft shoulder on lower spline two top, and the other end pushes against locking nut；Described lower spline biend is made up of concave circular arcs face E and D interval, convex shaped arc face；Described upper spline is contacted with the concave circular arcs face E of lower spline two and convex shaped arc face D respectively by contact surface B and groove C.
Further; described torque overload protection instrument clockwise or counterclockwise and moment of torsion less than set overload protection moment of torsion time; power urceolus delivers torque to upper spline; upper spline is come in contact by the arc surface D of contact surface B Yu drive splines, drives lower spline two to rotate by frictional force and circumference thrust；When rotation torque exceedes the overload protection moment of torsion of setting, the moment of torsion that upper spline is subject to is excessive, axial thrust between contact surface B and arc surface D is more than frictional force and circumference thrust, axial thrust drives lower spline two extrusion spring, the contact surface B of upper spline and the arc surface D of drive splines is made to relatively rotate, and do not drive the rotation of lower spline two, sliding friction between upper spline and lower spline two changes into axial displacement, thus converting the compression displacement of spring to, cannot transfer torque on central shaft, thus moment of torsion cannot be passed by central shaft, reach the purpose of protection bottom downhole tool.
Further, the contact surface B of described upper spline and the arc surface D of lower spline two is waveform arc surface or zigzag inclined-plane.
Further, described spring be in cylindroid helical-coil compression spring, butterfly spring or wavy spring any one.
The utility model has the advantage of:
1. it is by unique structural design, when the moment of torsion of power urceolus transmission is less than setting value, it is possible to deliver torque to bottom driving device by upper spline, drives downhole tool normally to rotate；
2. it is when the moment of torsion of power urceolus transmission is more than overload protection torque setting value; the axial thrust of upper spline promotes bottom driving device compression spring; make cannot transmit between upper spline and bottom driving device moment of torsion; the instrument being connected to this utility model lower end in operation process will not be destroyed by excessive moment of torsion; life tools are improved; save the trip time, reduce operating cost.
3. can be set by selecting and regulate spring for moment of torsion of the present utility model, the change of certain limit internal torque setting value can be tackled, meet onsite application demand.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model；
Fig. 2 is embodiment 1 structural representation of overload protection arrangement of the present utility model；
Fig. 3 is the embodiment 1 partial structurtes schematic diagram of overload protection arrangement of the present utility model；
Fig. 4 is the embodiment 1 structural representation front view of overload protection arrangement of the present utility model；
Fig. 5 is the Facad structure schematic diagram of upper spline of the present utility model；
Fig. 6 is the inverse layer structure schematic diagram of upper spline of the present utility model；
Fig. 7 is the structural representation of drive splines of the present utility model；
Fig. 8 is the structural representation of lower spline one of the present utility model；
Fig. 9 is the structural representation that this utility model does not bear torque condition；
Figure 10 is the structural representation that this utility model has born torque condition；
Figure 11 is the structural representation of this utility model torque overload guard mode；
Figure 12 is embodiment 2 structural representation of overload protection arrangement of the present utility model.
nullIn figure，101 is power urceolus，102 is overload protection arrangement，103 is bearing assembly，104 is seal assembly，105 is output shaft，Axle centered by 201，202 is upper spline，203 is drive splines，204 is lower spline one，205 is spring，301 is step，302 is boss A，303 is contact surface A，304 is groove A，305 is screw thread A，306 is groove B，307 is boss B，308 is screw thread B，309 is contact surface B，310 is boss C，311 is groove C，312 is outer surface A，313 is outer surface B，314 is boss D，315 is side，316 is end face，317 is groove D，318 is inner surface，319 is groove E，402 is arc surface D，403 arc surface E，405 is locking nut.
Detailed description of the invention
Below in conjunction with the embodiment in accompanying drawing, the utility model is described in further detail, but is not intended that any restriction of the present utility model.
As shown in Fig. 1～Figure 12, a kind of torque overload protection instrument, including power urceolus 101, overload protection arrangement 102, bearing assembly 103, seal assembly 104 and output shaft 105；Described overload protection arrangement 102 includes central shaft 201, upper spline 202, bottom driving device and spring 205, and upper spline 202, bottom driving device and spring 205 are coaxial with central shaft 201；Described power urceolus 101 is connected with overload protection arrangement 102, and overload protection arrangement 102 bottom connects bearing assembly 103 and seal assembly 104 successively, and central shaft 201 is connected with output shaft 105；Described central shaft 201 lower end is provided with boss B307 and screw thread A305, and upper end is provided with step 301 and boss A302；It is contact surface B309 that described upper spline 202 1 sections is provided with circle equally distributed boss C310, a boss C310 top, and boss C310 gap forms groove C311；Described upper spline 202 is installed on central shaft 201, is fixed by boss A302, and upper end and step 301 push against；Described upper spline 202 has cylindrical outer surface A312, is provided with boss A302, boss A302 outside and embeds keyway corresponding on power urceolus 101 outside the radial direction of surface A 312, coordinates transmission moment of torsion.
Embodiment 1,
As shown in Fig. 1～Figure 12, described overload protection arrangement 102 is made up of upper spline 202, drive splines 203, lower spline 1 and spring 205.Wherein, upper spline 202, drive splines 203, lower spline 1 and spring 205 are all coaxial with central shaft 201, and one end contacts with the step of central shaft 201, and the other end coordinates with drive splines 203, and drive splines 203 coordinates with lower spline 1.The step A301 of central shaft 201 limits upper spline 202 and is moved to the left along central shaft 201, and the locking nut 405 coordinated with screw thread A305 limits lower spline 1 and moves right along central shaft 201, and provides initial compression force for spring 205.
Power urceolus 101 is equivalent to load power shaft, is connected with upper drilling string；Bearing assembly 103 is for bearing from axial pulling force and pressure；Seal assembly 104 is possible to prevent the pollutant such as mud, chip to enter bearing assembly 103 and miscellaneous part.
Power urceolus 101 delivers torque to upper spline 202 by boss A302, the end contact face B309 of upper spline 202 contacts with the contact surface A303 of drive splines 203, tangential direction at two contact surface contact points has frictional force effect, lower spline 1 is delivered torque to by frictional force, lower spline 1 delivers torque to central shaft 201 by boss B307, central shaft 201 is connected with output shaft 105 by screw thread B308, and delivers torque to output shaft 105.
As shown in Figure 1 and Figure 4, spring 205 is enclosed within the middle part of central shaft 201, and the end contact of left end and drive splines 203, right-hand member contacts with the inner surface of lower spline 1.During assembling, upper spline 202 is loaded from the right side of central shaft 201 so that it is with the end contact of step 301, more successively drive splines 203, spring 205 and lower spline 1 are loaded, finally locking nut 405 is installed on screw thread A305, provide initial compression force for spring 205.
As shown in Figure 5, the outer surface A312 of upper spline 202 is a face of cylinder, the radial direction of surface A 312 is to being externally provided with boss A302 outside, the quantity of boss A302 is at least 1, it is preferably 4, keyway (not shown) corresponding with inside power urceolus 101 for boss A302 coordinates, and is delivered on upper spline 202 by the moment of torsion of power urceolus 101.Having boss C310 vertically and groove C311 on upper spline 202 end face, and be at least made up of 1 couple of boss C310 and groove C311, it is preferred to 12 pairs, boss 310 and groove 311 form concavo-convex staggered shape in upper spline 202 one end uniformly at intervals.The end face of boss C310 is contact surface B309, and contact surface B309 can also be replaced by some connected inclined-planes, and inclination angle of inclined plane is 30～60 degree.
As shown in Figure 6, the outer surface B313 of drive splines 203 radially has at least one boss D314, boss D314 along the axial direction of drive splines 203, and at least one end face is contact surface A303, and boss has two sides 315 radially.Another end face 316 of drive splines 203 is used as the supporting surface of spring 205.
As shown in Figure 7, one end face of lower spline 1 in axial direction there is at least one groove D317, inner surface 318 at lower spline 1 radially has at least a groove E319, and groove E319 coordinates with boss B307, is delivered on central shaft 201 by the moment of torsion on lower spline 1.
The boss D314 of drive splines 203 can slide axially inside the groove D317 of lower spline 1, and two contacts side surfaces of side 315 and groove D317.
Specific works state is: the EDGE CONTACT of the edge of the contact surface A303 of drive splines 203 and the contact surface B309 of upper spline 202, now, this utility model is in and does not bear torque condition, and spring 205 is in initial compressed state.
When this utility model starts to bear moment of torsion, but when moment of torsion is less than setting value, there is sliding friction in the contact surface B309 of the contact surface A303 of drive splines 203 and upper spline 202, and the boss D314 of drive splines 203 is axially moveable inside the groove D317 of lower spline 1, and the side 315 of drive splines 203 extrudes the side of groove D317 so that moment of torsion passes to lower spline 1 from upper spline 202.Now, drive splines 203 continues axially compressed spring 205.
nullWhen the moment of torsion that this utility model bears is more than torque setting value (torque setting value is determined by the decrement of spring 205)，The contact surface A303 of the drive splines 203 and contact surface B309 of upper spline 202 slides in respective arc top contact，The boss D314 of drive splines 203 is axially moveable inside the groove D317 of lower spline 1，The arc top making the contact surface A303 of drive splines 203 is concordant with the end face of lower spline 1，Now，Upper spline 202 is not by the constraint of drive splines 203 and lower spline 1，Drive splines 203 can not be driven to rotate，Upper spline 202 is made to produce idle running relative to drive splines 203 and lower spline 1，The torque of overload is not delivered on other downhole tools，Thus realizing the protection to instrument in torque overload situation.
When the torque value of input is less than the overload protection moment of torsion set; the restoring force of spring 205 makes the contact surface A303 of drive splines 203 that the contact surface B309 of upper spline 202 is produced sliding friction; and there is axial displacement in the boss D314 of drive splines 203 so that the moment of torsion of upper spline 202 continues through drive splines 203 and passes to lower spline 1.
In the present embodiment, described spring 205 be in cylindroid helical-coil compression spring, butterfly spring or wavy spring any one.
In the present embodiment, the contact surface B309 of described the upper spline 202 and contact surface A303 of drive splines 203 be in waveform arc surface or zigzag inclined-plane any one.
Embodiment 2,
As shown in Fig. 1, Fig. 5, Fig. 6, Fig. 7, Figure 12, described overload protection arrangement 102 is made up of upper spline 202, lower spline 2 206 and spring 205.Wherein, upper spline 202, lower spline 2 206 and spring 205 are all coaxial with central shaft 201, and one end contacts with the step of central shaft 201, and the other end coordinates with drive splines 203, and drive splines 203 coordinates with lower spline 2 206.The step A301 of central shaft 201 limits upper spline 202 and is moved to the left along central shaft 201, and the locking nut 405 coordinated with screw thread A305 limits lower spline 2 206 and moves right along central shaft 201, and provides initial compression force for spring 205.
Power urceolus 101 is equivalent to load power shaft, is connected with upper drilling string；Bearing assembly 103 is for bearing from axial pulling force and pressure；Seal assembly 104 is possible to prevent the pollutant such as mud, chip to enter bearing assembly 103 and miscellaneous part.
Power urceolus 101 delivers torque to upper spline 202 by boss A302, the end contact face B309 of upper spline 202 contacts with the arc surface D402 of lower spline 2 206, tangential direction at two contact surface contact points has frictional force effect, lower spline 2 206 is delivered torque to by frictional force, lower spline 2 206 delivers torque to central shaft 201 by boss B307, central shaft 201 is connected with output shaft 105 by screw thread B308, and delivers torque to output shaft 105.
Described lower spline 2 206 top is provided with circle equally distributed groove F320, a groove F320 and is provided with convex shaped arc face D402；Lower spline 2 206 mid diameter is less than top；Described locking nut 405 is arranged on central shaft 201 by screw thread A305；Described spring 205 is looped around in the middle part of lower spline 2 206, and one end pushes against the shaft shoulder on lower spline 2 206 top, and the other end pushes against locking nut 405；Described lower spline 2 206 end face is made up of concave circular arcs face E403 and D402 interval, convex shaped arc face；Described upper spline 202 is contacted with the concave circular arcs face E403 of lower spline 2 206 and convex shaped arc face D402 respectively by contact surface B309 and groove C311.
Described torque overload protection instrument clockwise or counterclockwise and moment of torsion less than set overload protection moment of torsion time; power urceolus 101 delivers torque to upper spline 202; upper spline 202 is come in contact by the arc surface D402 of contact surface B309 Yu drive splines 203, drives lower spline 2 206 to rotate by frictional force and circumference thrust；When rotation torque exceedes the overload protection moment of torsion of setting, the moment of torsion that upper spline 202 is subject to is excessive, axial thrust between contact surface B309 and arc surface D402 is more than frictional force and circumference thrust, axial thrust drives lower spline 2 206 extrusion spring 205, the contact surface B309 of the upper spline 202 and arc surface D402 of drive splines 203 is made to relatively rotate, and do not drive lower spline 2 206 to rotate, sliding friction between upper spline 202 and lower spline 2 206 changes into axial displacement, thus converting the compression displacement of spring 205 to, cannot transfer torque on central shaft 201, thus moment of torsion cannot be passed by central shaft 201, reach the purpose of protection bottom downhole tool.
Specific works state is: this utility model is in when not bearing torque condition, spring 205 is in initial compressed state, the contact surface B309 of upper spline 202 contacts with the arc surface E403 of lower spline 206, the groove C311 of upper spline 202 contacts with the arc surface D402 of lower spline 206, now, this utility model is in and does not bear torque condition, and spring 205 is in initial compressed state.
When this utility model starts to bear moment of torsion, but when moment of torsion is less than setting value, there is sliding friction in the contact surface B309 of the contact surface A303 of drive splines 203 and upper spline 202, and the boss D314 of drive splines 203 is axially moveable inside the groove D317 of lower spline 1, and the side 315 of drive splines 203 extrudes the side of groove D317 so that moment of torsion passes to lower spline 1 from upper spline 202.Now, drive splines 203 continues axially compressed spring 205.
nullWhen the moment of torsion that this utility model bears is more than torque setting value (torque setting value is determined by the decrement of spring 205)，The contact surface A303 of the drive splines 203 and contact surface B309 of upper spline 202 slides in respective arc top contact，The boss D314 of drive splines 203 is axially moveable inside the groove D317 of lower spline 1，The arc top making the contact surface A303 of drive splines 203 is concordant with the end face of lower spline 1，Now，Upper spline 202 is not by the constraint of drive splines 203 and lower spline 1，Drive splines 203 can not be driven to rotate，Upper spline 202 is made to produce idle running relative to drive splines 203 and lower spline 1，The torque of overload is not delivered on other downhole tools，Thus realizing the protection to instrument in torque overload situation.
When the torque value of input is less than the overload protection moment of torsion set; the restoring force of spring 205 makes the contact surface A303 of drive splines 203 that the contact surface B309 of upper spline 202 is produced sliding friction; and there is axial displacement in the boss D314 of drive splines 203 so that the moment of torsion of upper spline 202 continues through drive splines 203 and passes to lower spline 1.
In the present embodiment, described spring 205 be in cylindroid helical-coil compression spring, butterfly spring or wavy spring any one.
In the present embodiment, the contact surface B309 of described the upper spline 202 and arc surface D402 of lower spline 2 206 be in waveform arc surface or zigzag inclined-plane any one.
The above is only preferred implementation of the present utility model, it is noted that this utility model is not limited to aforesaid way, and under the premise without departing from this utility model principle, moreover it is possible to improve further, these improvement also should be regarded as protection domain of the present utility model.
Claims (10)
1. a torque overload protection instrument, it is characterised in that include power urceolus (101), overload protection arrangement (102), bearing assembly (103), seal assembly (104) and output shaft (105)；Described overload protection arrangement (102) includes central shaft (201), upper spline (202), bottom driving device, spring (205) and locking nut (405), and upper spline (202), bottom driving device, spring (205) and locking nut (405) are all coaxial with central shaft (201)；Described power urceolus (101) is connected with overload protection arrangement (102); overload protection arrangement (102) bottom connects bearing assembly (103) and seal assembly (104) successively, and central shaft (201) is connected with output shaft (105)；
Described central shaft (201) lower end is provided with boss B (307) and screw thread A (305), and upper end is provided with step (301) and boss A (302)；
Described upper spline (202) one sections is provided with an equally distributed boss C (310) of circle, and boss C (310) top is contact surface B (309), and boss C (310) gap forms groove C (311)；Described upper spline (202) is installed on central shaft (201), is fixed by boss A (302), and upper end and step (301) push against；Described upper spline (202) has cylindrical outer surface A (312), it is provided with boss A (302) outside outside the radial direction of surface A (312), boss A (302) embeds the upper corresponding keyway of power urceolus (101), coordinates transmission moment of torsion.
2. a kind of torque overload protection instrument according to claim 1; it is characterized in that; described bottom driving device is made up of drive splines (203) and lower spline one (204); described drive splines (203) outside is provided with a radial equally distributed boss D (314) of circle; boss D (314) side is contact surface A (303); the contact surface B (309) of upper spline (202) embeds in the contact surface A (303) of drive splines (203), and cooperate transmission moment of torsion；Described lower spline one (204) one section is provided with an equally distributed groove D (317) of circle, and boss D (314) embeds in groove D (317), and cooperate transmission moment of torsion；
The contact surface B (309) of described upper spline (202) is the male and fomale(M&F) that is connected with the contact surface A (303) of drive splines (203)；
Described spring (205) one end contacts with the end face (316) of drive splines (203), make the sliding friction between the contact surface B (309) of upper spline (202) and the contact surface A (303) of drive splines (203) change into axial displacement, and then convert the compression displacement of spring (205) to；
One end face of described lower spline one (204) is in axial direction provided with groove D (317), inner surface (318) at lower spline one (204) is radially provided with groove E (319), boss B (307) embeds groove E (319), and cooperate transmission moment of torsion.
3. a kind of torque overload protection instrument according to claim 2; it is characterized in that, the contact surface B (309) of described upper spline (202) and the contact surface A (303) of drive splines (203) is waveform arc surface.
4. a kind of torque overload protection instrument according to claim 2, it is characterised in that the contact surface B (309) of described upper spline (202) and the contact surface A (303) of drive splines (203) is zigzag inclined-plane.
5. a kind of torque overload protection instrument according to claim 1, it is characterised in that described bottom driving device is made up of lower spline two (206) and locking nut (405)；Described lower spline two (206) top is provided with an equally distributed groove F (320) of circle, and groove F (320) is provided with convex shaped arc face D (402)；Lower spline two (206) mid diameter is less than top；Described locking nut (405) is arranged on central shaft (201) by screw thread A (305)；Described spring (205) is looped around lower spline two (206) middle part, and one end pushes against the shaft shoulder on lower spline two (206) top, and the other end pushes against locking nut (405)；Described lower spline two (206) end face is made up of concave circular arcs face E (403) and D (402) interval, convex shaped arc face；Described upper spline (202) is contacted with concave circular arcs face E (403) of lower spline two (206) and convex shaped arc face D (402) respectively by contact surface B (309) and groove C (311).
6. a kind of torque overload protection instrument according to claim 5; it is characterized in that, the contact surface B (309) of described upper spline (202) and the arc surface D (402) of lower spline two (206) is waveform arc surface.
7. a kind of torque overload protection instrument according to claim 5, it is characterised in that the contact surface B (309) of described upper spline (202) and the arc surface D (402) of lower spline two (206) is zigzag inclined-plane.
8. a kind of torque overload protection instrument according to claim 1, it is characterised in that described spring (205) is cylindroid helical-coil compression spring.
9. a kind of torque overload protection instrument according to claim 1, it is characterised in that described spring (205) is butterfly spring.
10. a kind of torque overload protection instrument according to claim 1, it is characterised in that described spring (205) is wavy spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620140796.5U CN205400582U (en) | 2016-02-25 | 2016-02-25 | Moment of torsion overload protection instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620140796.5U CN205400582U (en) | 2016-02-25 | 2016-02-25 | Moment of torsion overload protection instrument |
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|---|---|
| CN205400582U true CN205400582U (en) | 2016-07-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620140796.5U Withdrawn - After Issue CN205400582U (en) | 2016-02-25 | 2016-02-25 | Moment of torsion overload protection instrument |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105569562A (en) * | 2016-02-25 | 2016-05-11 | 西南石油大学 | Torque overload protection tool |
| CN107611561A (en) * | 2017-09-29 | 2018-01-19 | 中国电子科技集团公司第五十四研究所 | A kind of central shaft type Finite rotation routing device |
| CN111005676A (en) * | 2020-01-03 | 2020-04-14 | 广州利何机械科技有限公司 | Soil exploration drilling device with drill bit overload protection function |
| CN114215882A (en) * | 2021-12-07 | 2022-03-22 | 齐重数控装备股份有限公司 | Multilayer product fine indexing powerful mechanical transmission device based on differential transposition principle |
-
2016
- 2016-02-25 CN CN201620140796.5U patent/CN205400582U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105569562A (en) * | 2016-02-25 | 2016-05-11 | 西南石油大学 | Torque overload protection tool |
| CN107611561A (en) * | 2017-09-29 | 2018-01-19 | 中国电子科技集团公司第五十四研究所 | A kind of central shaft type Finite rotation routing device |
| CN107611561B (en) * | 2017-09-29 | 2024-03-22 | 中国电子科技集团公司第五十四研究所 | Central shaft type limited rotation wiring device |
| CN111005676A (en) * | 2020-01-03 | 2020-04-14 | 广州利何机械科技有限公司 | Soil exploration drilling device with drill bit overload protection function |
| CN111005676B (en) * | 2020-01-03 | 2020-12-01 | 江苏南京地质工程勘察院 | Soil exploration drilling device with drill bit overload protection function |
| CN114215882A (en) * | 2021-12-07 | 2022-03-22 | 齐重数控装备股份有限公司 | Multilayer product fine indexing powerful mechanical transmission device based on differential transposition principle |
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