CN204960831U - Universal axis - Google Patents
Universal axis Download PDFInfo
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- CN204960831U CN204960831U CN201520747965.7U CN201520747965U CN204960831U CN 204960831 U CN204960831 U CN 204960831U CN 201520747965 U CN201520747965 U CN 201520747965U CN 204960831 U CN204960831 U CN 204960831U
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Abstract
The utility model provides an universal axis belongs to screw rod drilling tool accessory field, including columniform torsion cushion sub, torsion cushion sub's both ends are provided with the universal joint respectively, be provided with the helicla flute on torsion cushion sub's the outer wall. Torsion cushion sub among this universal axis in the course of the work, when sending brill or drilling resistance to increase, can in time cushion the impact between drill bit and the shaft bottom through circumference elastic deformation, reduce the instantaneous rotation speed of drill bit, the effect of playing the protection drill bit and reducing screw rod drilling tool output power performance fluctuation range, when the drilling resistance reduces, torsion cushion sub accelerates the instantaneous rotation speed of drill bit through the release elastic energy, play the effect of automatically regulated drill bit drilling parameter, make drill bit performance the best drilling efficiency.
Description
Technical field
The utility model relates to helicoid hydraulic motor accessory field, in particular to universal drive shaft.
Background technology
Generally use Petal type cardan axle and ball-and-socket hinge style universal drive shaft in current helicoid hydraulic motor, it is connected between power transmission shaft and motor rotor in helicoid hydraulic motor, in order to the eccentric rotational motion of motor rotor to be changed into the fixed-axis rotation of power transmission shaft.
The common drawback that above-mentioned two kinds of universal drive shafts exist is rigid rod between two universal joints, without buffer capacity, the impact force between drill bit and downhole formation when intermittent type send brill cannot be cushioned, and cause continuation to the outputting power performance of helicoid hydraulic motor and fluctuation in a big way, make the reduced lifetime of drill bit, the operating efficiency of helicoid hydraulic motor reduces.
Utility model content
The purpose of this utility model is to provide a kind of universal drive shaft with pooling feature, to improve the problems referred to above.
The utility model is achieved in that
This universal drive shaft comprises columniform torsion flexible coupling, and the two ends of described torsion flexible coupling are respectively arranged with universal joint, and the outer wall of described torsion flexible coupling is provided with helicla flute.
As preferably, described universal joint comprises outer universal joint and interior universal joint, described outer universal joint comprises joint pin and outer six square toes, described joint pin is connected with torsion flexible coupling away from one end of described outer six square toes, described outer six square toes comprise two positive six terrace with edges, two positive six terrace with edges include large end face and small end face, the large end face of two positive six prisms connects, the small end face of one of them positive six prism is connected with described joint pin, described interior universal joint is provided with hexagonal hole and the anti-drop structure for preventing outer universal joint from departing from interior universal joint in mate with described outer six square toes.
Its structure is simple to adopt the object of hexagonal structure to be, easy to process, effectively can realize the free universal movement between outer universal joint and interior universal joint.
As preferably, described anti-drop structure comprises the installing hole be communicated with described interior hexagonal hole, described mounting hole site is in the top of described interior hexagonal hole, be provided with in described installing hole for prevent outer six square toes depart from hexagonal hole anti-lost ring and for described anti-lost ring being anchored on the hold-down ring in installing hole, the internal diameter of described anti-lost ring is less than described outer six square toes and is greater than joint pin, and described hold-down ring is threadedly connected in described installing hole.
The object arranging anti-drop structure is like this that its structure is simple, easy to process, effectively easily can realize assembling and the dismounting of outer universal joint and interior universal joint.
As preferably, be describedly provided with terminal pad between six square toes and joint pin outward, described terminal pad is round table-like and its maximum gauge is greater than the internal diameter of described anti-lost ring, the inwall of described anti-lost ring is provided with the fillet surface mated with the sidewall of described terminal pad.
The object arranging terminal pad is the stability improving anti-drop structure, and terminal pad sidewall and anti-lost ring inner wall shape coupling effectively can ensure the flexibility that outer six square toes rotate in interior hexagonal hole, prevents from occurring the phenomenons such as stuck when rotating.
As preferably, the sealing bolt end face of described outer universal joint away from described installing hole being provided with lubrication screw and mating with described lubrication screw, the bottom of described lubrication screw is communicated with oil filler point, and described oil filler point is communicated with described interior hexagonal hole.
The object arranging lubrication screw and oil filler point is to facilitate the injection of lubrication oil, and the density arranging sealing bolt is closed lubrication screw, prevents oil leak.
As preferably, the outer wall of described joint pin has been threaded movable sealing steel bushing, the outer wall of described movable sealing steel bushing has been threaded sealing shroud fixed cover, described sealing shroud fixed cover and movable sealing steel bushing form the first draw-in groove jointly, described anti-lost ring and hold-down ring form the second draw-in groove jointly, described joint pin is also arranged with the rubber sealing boot of circular tube shaped, one end of described rubber sealing boot is connected in described first draw-in groove, and the other end is connected in described second draw-in groove.
The object arranging rubber sealing boot is to prevent the lubrication oil in interior hexagonal hole from leaking from the gap between anti-lost ring and terminal pad.
As preferably, cave inward in the middle part of the sidewall of described rubber sealing boot and with the outer wall close contact of joint pin.
The object arranging rubber sealing boot is like this to make it have expansion joint function, not only can strengthen the ability of resistant to damage during its distortion, and hard impurity to be prevented in swiftly flowing drilling fluid its damage.
As preferably, between the outer wall of described anti-lost ring and the inwall of installing hole and between the outer wall of described joint pin and the inwall of movable sealing steel bushing, be provided with O RunddichtringO.
The object arranging O RunddichtringO is to prevent lubrication oil from leaking between the outer wall and the inwall of annular steel bushing of described joint pin between the outer wall and the inwall of installing hole of anti-lost ring.
As preferably, the steel ball being provided with conical bore between described lubrication screw and oil filler point and mating with described conical bore, the external surface of described steel ball under the active force of sealing bolt with the inwall close contact of conical bore.
The object arranging conical bore is that raising lubrication oil flows through smoothness when lubricating screw and oil filler point connectivity part; The object arranging steel ball is effectively to block conical bore, improves the sealing performance of sealing bolt.
As preferably, the bottom of described interior hexagonal hole is provided with the countersunk head groove of truncated cone-shaped, bulb is provided with in described countersunk head groove, described bulb is cylindrical and its two ends are provided with outer convex spherical, the bottom of described countersunk head groove and described outer six square toes are respectively arranged with concave spherical surface in mating with outer convex spherical, described bulb is provided with T-shaped hole, described T-shaped hole comprises the axial hole and radial hole that are interconnected, described axial hole one end is communicated with described oil filler point, the other end is communicated with the middle part of radial hole, and the two ends of described radial hole are communicated with interior hexagonal hole respectively.
The object arranging bulb is to increase a strong point for outer six square toes on the one hand, improves flexibility and the stability of outer six square toes swings, changes the flow direction of lubrication oil on the other hand, make it more uniformly flow in interior hexagonal hole, improve lubricant effect.
The beneficial effects of the utility model are:
Torsion flexible coupling in this universal drive shaft in the course of the work, when sending brill or drilling resistance increases, can by the impact between the timely cushioned drill bit of circumferential elastic deformation and shaft bottom, reduce the instantaneous rotary speed of drill bit, play the effect of protection drill bit and reduction helicoid hydraulic motor outputting power performance inconsistency scope, when drilling resistance reduces, torsion flexible coupling can accelerate the instantaneous rotary speed of drill bit by release elasticity, play the effect automatically regulating drill bit drilling parameter, drill bit is made to play best drilling usefulness, therefore the technical program is the drilling ability keeping drill bit good and the drilling usefulness fully sending out drill bit the best, and stable helicoid hydraulic motor outputting power performance improves drilling efficiency.
Simultaneously, outer six square head structures of described outer universal joint can make freely to realize universal movement between inside and outside universal joint, large with transmitting torque, transmit stable movement and the six side's fit structures be under oil lubrication state can reduce the wearing and tearing of universal structure, extend the life-span of universal drive shaft, and its structure simple, be convenient to manufacture.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the utility model embodiment, be briefly described to the accompanying drawing used required in embodiment below, be to be understood that, the following drawings illustrate only some embodiment of the present utility model, therefore the restriction to scope should be counted as, for those of ordinary skill in the art, under the prerequisite not paying creative work, other relevant accompanying drawings can also be obtained according to these accompanying drawings.
The sectional view of the universal drive shaft that Fig. 1 provides for the utility model embodiment;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is the B-B sectional view of Fig. 1;
Fig. 4 is C portion enlarged drawing;
Fig. 5 for the utility model embodiment provide in the sectional view of universal joint;
Fig. 6 is the left view in I-I cross section in Fig. 5;
The sectional view of the outer universal joint that Fig. 7 provides for the utility model embodiment;
Fig. 8 is the left view in II-II cross section in Fig. 7.
Reference numeral gathers:
Torsion flexible coupling 100; Interior universal joint 200;
Joint pin 300; Outer six square toes 350; Sealing bolt 400;
Steel ball 500; Bulb 600; Rubber sealing boot 700;
Movable sealing steel bushing 710; Sealing shroud fixed cover 720;
Anti-lost ring 730; Hold-down ring 740.
Detailed description of the invention
For making the object of the utility model embodiment, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the utility model embodiment, technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is the utility model part embodiment, instead of whole embodiments.The assembly of the utility model embodiment describing and illustrate in usual accompanying drawing herein can be arranged with various different configuration and design.Therefore, below to the detailed description of the embodiment of the present utility model provided in the accompanying drawings and the claimed scope of the present utility model of not intended to be limiting, but selected embodiment of the present utility model is only represented.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
In description of the present utility model, it should be noted that, term " " center ", " on ", D score, " left side ", " right side ", " vertically ", " level ", " interior ", orientation or the position relationship of the instruction such as " outward " are based on orientation shown in the drawings or position relationship, or this utility model product orientation of usually putting or position relationship when using, only the utility model and simplified characterization for convenience of description, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.In addition, term " first ", " second ", " the 3rd " etc. only for distinguishing description, and can not be interpreted as instruction or hint relative importance.
In description of the present utility model, also it should be noted that, unless otherwise clearly defined and limited, term " setting ", " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, concrete condition the concrete meaning of above-mentioned term in the utility model can be understood.
With reference to Fig. 1-8, this universal drive shaft comprises columniform torsion flexible coupling 100, and the two ends of described torsion flexible coupling 100 are respectively arranged with universal joint, and the outer wall of described torsion flexible coupling 100 is provided with helicla flute.
Is generally all rigid rod between two universal joints on existing universal drive shaft, does not therefore have shock-absorbing capacity, cannot cushion the impact force between drill bit and downhole formation when intermittent type send brill, cause helicoid hydraulic motor work to be fluctuated large, bit life is short and drilling efficiency is low.For above-mentioned situation, the technical program provides a kind of universal drive shaft, torsion flexible coupling 100 between two universal joints of this universal drive shaft is provided with helicla flute, thus obtain certain flexibility, can reverse within the specific limits and recover, correspondingly, be also just provided with certain shock-absorbing capacity, compensate for the defect of prior art.
In the present embodiment, described universal joint comprises outer universal joint and interior universal joint 200, described outer universal joint comprises joint pin 300 and outer six square toes 350, described joint pin 300 is connected with torsion flexible coupling 100 away from one end of described outer six square toes 350, described outer six square toes 350 comprise two positive six terrace with edges, two positive six terrace with edges include large end face and small end face, the large end face of two positive six prisms connects, the small end face of one of them positive six prism is connected with described joint pin 300, described interior universal joint 200 is provided with hexagonal hole and the anti-drop structure for preventing outer universal joint from departing from interior universal joint 200 in mate with described outer six square toes 350.
Wherein, described joint pin 300 is provided with external screw thread away from one end of described outer six square toes 350, and the two ends of described torsion flexible coupling 100 are respectively arranged with the screwed hole mated with described external screw thread, and being threaded, it is simple to have structure, simple load and unload feature; Described joint pin 300 and outer six square toes 350 one-body molded, two positive six terrace with edges are also one-body molded; Described interior hexagonal hole is positive hexagon, and the large end face of two positive six terrace with edges overlaps, and its six limits form linear contact lay with a sidewall that stays for interior hexagonal hole respectively.
Its structure is simple to adopt the object of hexagonal structure to be, easy to process, effectively can realize the free universal movement between outer universal joint and interior universal joint 200.
In the present embodiment, described anti-drop structure comprises the installing hole be communicated with described interior hexagonal hole, described mounting hole site is in the top of described interior hexagonal hole, be provided with in described installing hole for prevent outer six square toes 350 depart from interior hexagonal hole anti-lost ring 730 and for described anti-lost ring 730 being anchored on the hold-down ring 740 in installing hole, the internal diameter of described anti-lost ring 730 is less than described outer six square toes 350 and is greater than joint pin 300, and described hold-down ring 740 is threadedly connected in described installing hole.
Wherein, described installing hole is cylindrical and diameter is greater than described interior hexagonal hole; Described installing hole is provided with internal thread away from the position of described interior hexagonal hole, the outer wall of described hold-down ring 740 is provided with the external screw thread mated with above-mentioned internal thread; Described anti-lost ring 730 and described installing hole matched in clearance, so that anti-lost ring 730 can load installing hole easily; The internal diameter of described anti-lost ring 730 is greater than joint pin 300, so that joint pin 300 can pass.
The object arranging anti-drop structure is like this that its structure is simple, easy to process, effectively easily can realize assembling and the dismounting of outer universal joint and interior universal joint 200.
In the present embodiment, terminal pad is provided with between six square toes 350 and joint pin 300 outside described, described terminal pad is round table-like and its maximum gauge is greater than the internal diameter of described anti-lost ring 730, and the inwall of described anti-lost ring 730 is provided with the fillet surface mated with the sidewall of described terminal pad.
The object arranging terminal pad is the stability improving anti-drop structure, and terminal pad sidewall and anti-lost ring 730 inner wall shape coupling effectively can ensure the flexibility that outer six square toes 350 rotate in interior hexagonal hole, prevents from occurring the phenomenons such as stuck when rotating.
In the present embodiment, the sealing bolt 400 end face of described outer universal joint away from described installing hole being provided with lubrication screw and mating with described lubrication screw, the bottom of described lubrication screw is communicated with oil filler point, and described oil filler point is communicated with described interior hexagonal hole.
Wherein, the axis of described lubrication screw, oil filler point and joint pin 300 overlaps; The diameter of described oil filler point is less than the external diameter of oilhole.
The object arranging lubrication screw and oil filler point is to facilitate the injection of lubrication oil, and the density arranging sealing bolt 400 is closed lubrication screw, prevents oil leak.During oiling, first screwed off by sealing bolt 400, then inject lubrication oil to lubrication screw, lubrication oil can flow through lubrication screw and oil filler point enter interior hexagonal hole so that external six square toes 350 lubricate successively, again screws on sealing bolt 400 after oiling completes.
In the present embodiment, the outer wall of described joint pin 300 has been threaded movable sealing steel bushing 710, the outer wall of described movable sealing steel bushing 710 has been threaded sealing shroud fixed cover 720, described sealing shroud fixed cover 720 and movable sealing steel bushing 710 form the first draw-in groove jointly, described anti-lost ring 730 and hold-down ring 740 form the second draw-in groove jointly, described joint pin 300 is also arranged with the rubber sealing boot 700 of circular tube shaped, one end of described rubber sealing boot 700 is connected in described first draw-in groove, and the other end is connected in described second draw-in groove.
Wherein, the outer wall of described joint pin 300 is provided with external screw thread, the inwall of described movable sealing steel bushing 710 is provided with the internal thread mated with above-mentioned external screw thread; The outer wall of described movable sealing steel bushing 710 is provided with external screw thread, the inwall of described sealing shroud fixed cover 720 is provided with the internal thread mated with above-mentioned external screw thread; The outer wall of described movable sealing steel bushing 710 is step-like and the little cylindrical of diameter coordinates formation first draw-in groove with sealing shroud fixed cover 720, and the outer wall of described anti-lost ring 730 is also in step-like and the cylindrical that diameter is little coordinates formation second draw-in groove with bail wire; The two ends being dimensioned slightly smaller than described rubber sealing boot 700 of described first draw-in groove and the second draw-in groove, improve the intensity of rubber sealing boot 700 two ends clamping; Tightening hoop is provided with, to improve the installation stability of rubber sealing boot 700 in described first draw-in groove.
The object arranging rubber sealing boot 700 is to prevent the lubrication oil in interior hexagonal hole from leaking from the gap between anti-lost ring 730 and terminal pad.
In the present embodiment, cave inward in the middle part of the sidewall of described rubber sealing boot 700 and with the outer wall close contact of joint pin 300.
Wherein, the circle that described rubber sealing boot 700 is all greater than interlude inside and outside circle diameter for two inside and outside circle diameter overlaps, all arc transition is passed through between its two and inside and outside circle of interlude, the cylindrical at its two ends is also provided with a bit of annular boss, so that the structure at two ends compresses, improve it and stability is installed.
The object arranging rubber sealing boot 700 is like this to make it have expansion joint function, not only can strengthen the ability of resistant to damage during its distortion, and hard impurity to be prevented in swiftly flowing drilling fluid its damage.
In the present embodiment, between the outer wall of described anti-lost ring 730 and the inwall of installing hole and between the outer wall of described joint pin 300 and the inwall of movable sealing steel bushing 710, be provided with O RunddichtringO.
Wherein, the outer wall of on the outer wall of described anti-lost ring 730 and junction is provided with annular seal groove, and described O RunddichtringO is arranged in described annular seal groove; Sealing ring on described joint pin 300 has two, and the axis square spacer along described joint pin 300 is arranged.
The object arranging O RunddichtringO is to prevent lubrication oil from leaking between the outer wall and the inwall of annular steel bushing of described joint pin 300 between the outer wall and the inwall of installing hole of anti-lost ring 730.
In the present embodiment, the steel ball 500 being provided with conical bore between described lubrication screw and oil filler point and mating with described conical bore, the external surface of described steel ball 500 under the active force of sealing bolt 400 with the inwall close contact of conical bore.
The object arranging conical bore is that raising lubrication oil flows through smoothness when lubricating screw and oil filler point connectivity part; The object arranging steel ball 500 is effectively to block conical bore, improves the sealing performance of sealing bolt 400.
In the present embodiment, the bottom of described interior hexagonal hole is provided with the countersunk head groove of truncated cone-shaped, bulb 600 is provided with in described countersunk head groove, described bulb 600 is cylindrical and its two ends are provided with outer convex spherical, the bottom of described countersunk head groove and described outer six square toes 350 are respectively arranged with concave spherical surface in mating with outer convex spherical, described bulb 600 is provided with T-shaped hole, described T-shaped hole comprises the axial hole and radial hole that are interconnected, described axial hole one end is communicated with described oil filler point, the other end is communicated with the middle part of radial hole, the two ends of described radial hole are communicated with interior hexagonal hole respectively.
Wherein, described countersunk head groove is cylindrical, and the outer wall of its inwall and bulb 600 is provided with and leaves enough gaps, so that lubrication oil passes through; The aperture of described axial hole is less than oil filler point, and the aperture of described radial hole equals axial hole.
The object arranging bulb 600 is to increase a strong point for outer six square toes 350 on the one hand, improves flexibility and the stability of outer six square toes 350 swings, changes the flow direction of lubrication oil on the other hand, make it more uniformly flow in interior hexagonal hole, improve lubricant effect.
Torsion flexible coupling 100 in this universal drive shaft in the course of the work, when sending brill or drilling resistance increases, can by the impact between the timely cushioned drill bit of circumferential elastic deformation and shaft bottom, reduce the instantaneous rotary speed of drill bit, play the effect of protection drill bit and reduction helicoid hydraulic motor outputting power performance inconsistency scope, when drilling resistance reduces, torsion flexible coupling 100 can accelerate the instantaneous rotary speed of drill bit by release elasticity, play the effect automatically regulating drill bit drilling parameter, drill bit is made to play best drilling usefulness, therefore the technical program is the drilling ability keeping drill bit good and the drilling usefulness fully sending out drill bit the best, and stable helicoid hydraulic motor outputting power performance improves drilling efficiency.
Simultaneously, outer six square toes 350 structures of described outer universal joint can make freely to realize universal movement between inside and outside universal joint, large with transmitting torque, transmit stable movement and the six side's fit structures be under oil lubrication state can reduce the wearing and tearing of universal structure, extend the life-span of universal drive shaft, and its structure simple, be convenient to manufacture.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (10)
1. a universal drive shaft, is characterized in that, comprises columniform torsion flexible coupling, and the two ends of described torsion flexible coupling are respectively arranged with universal joint, and the outer wall of described torsion flexible coupling is provided with helicla flute.
2. universal drive shaft according to claim 1, it is characterized in that, described universal joint comprises outer universal joint and interior universal joint, described outer universal joint comprises joint pin and outer six square toes, described joint pin is connected with torsion flexible coupling away from one end of described outer six square toes, described outer six square toes comprise two positive six terrace with edges, two positive six terrace with edges include large end face and small end face, the large end face of two positive six prisms connects, the small end face of one of them positive six prism is connected with described joint pin, described interior universal joint is provided with hexagonal hole and the anti-drop structure for preventing outer universal joint from departing from interior universal joint in mate with described outer six square toes.
3. universal drive shaft according to claim 2, it is characterized in that, described anti-drop structure comprises the installing hole be communicated with described interior hexagonal hole, described mounting hole site is in the top of described interior hexagonal hole, be provided with in described installing hole for prevent outer six square toes depart from hexagonal hole anti-lost ring and for described anti-lost ring being anchored on the hold-down ring in installing hole, the internal diameter of described anti-lost ring is less than described outer six square toes and is greater than joint pin, and described hold-down ring is threadedly connected in described installing hole.
4. universal drive shaft according to claim 3, it is characterized in that, terminal pad is provided with between six square toes and joint pin outside described, described terminal pad is round table-like and its maximum gauge is greater than the internal diameter of described anti-lost ring, the inwall of described anti-lost ring is provided with the fillet surface mated with the sidewall of described terminal pad.
5. universal drive shaft according to claim 3, it is characterized in that, the sealing bolt end face of described outer universal joint away from described installing hole being provided with lubrication screw and mating with described lubrication screw, the bottom of described lubrication screw is communicated with oil filler point, and described oil filler point is communicated with described interior hexagonal hole.
6. universal drive shaft according to claim 5, it is characterized in that, the outer wall of described joint pin has been threaded movable sealing steel bushing, the outer wall of described movable sealing steel bushing has been threaded sealing shroud fixed cover, described sealing shroud fixed cover and movable sealing steel bushing form the first draw-in groove jointly, described anti-lost ring and hold-down ring form the second draw-in groove jointly, described joint pin is also arranged with the rubber sealing boot of circular tube shaped, one end of described rubber sealing boot is connected in described first draw-in groove, and the other end is connected in described second draw-in groove.
7. universal drive shaft according to claim 6, is characterized in that, cave inward in the middle part of the sidewall of described rubber sealing boot and with the outer wall close contact of joint pin.
8. universal drive shaft according to claim 6, is characterized in that, is provided with O RunddichtringO between the outer wall of described anti-lost ring and the inwall of installing hole and between the outer wall of described joint pin and the inwall of movable sealing steel bushing.
9. universal drive shaft according to claim 6, it is characterized in that, the steel ball being provided with conical bore between described lubrication screw and oil filler point and mating with described conical bore, the external surface of described steel ball under the active force of sealing bolt with the inwall close contact of conical bore.
10. universal drive shaft according to claim 6, it is characterized in that, the bottom of described interior hexagonal hole is provided with the countersunk head groove of truncated cone-shaped, bulb is provided with in described countersunk head groove, described bulb is cylindrical and its two ends are provided with outer convex spherical, the bottom of described countersunk head groove and described outer six square toes are respectively arranged with concave spherical surface in mating with outer convex spherical, described bulb is provided with T-shaped hole, described T-shaped hole comprises the axial hole and radial hole that are interconnected, described axial hole one end is communicated with described oil filler point, the other end is communicated with the middle part of radial hole, the two ends of described radial hole are communicated with interior hexagonal hole respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520747965.7U CN204960831U (en) | 2015-09-24 | 2015-09-24 | Universal axis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520747965.7U CN204960831U (en) | 2015-09-24 | 2015-09-24 | Universal axis |
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| Publication Number | Publication Date |
|---|---|
| CN204960831U true CN204960831U (en) | 2016-01-13 |
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|---|---|---|---|
| CN201520747965.7U Active CN204960831U (en) | 2015-09-24 | 2015-09-24 | Universal axis |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109488203A (en) * | 2018-11-28 | 2019-03-19 | 李少江 | Universal shaft |
| CN113700758A (en) * | 2020-05-07 | 2021-11-26 | 中国石油天然气集团有限公司 | Universal joint |
| CN114542616A (en) * | 2020-11-25 | 2022-05-27 | 中国石油天然气集团有限公司 | Through-fluid universal shaft |
| CN116696228A (en) * | 2023-08-04 | 2023-09-05 | 四川深远石油钻井工具股份有限公司 | Screw drilling tool with self-adjusting output torque |
-
2015
- 2015-09-24 CN CN201520747965.7U patent/CN204960831U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109488203A (en) * | 2018-11-28 | 2019-03-19 | 李少江 | Universal shaft |
| CN113700758A (en) * | 2020-05-07 | 2021-11-26 | 中国石油天然气集团有限公司 | Universal joint |
| CN114542616A (en) * | 2020-11-25 | 2022-05-27 | 中国石油天然气集团有限公司 | Through-fluid universal shaft |
| CN116696228A (en) * | 2023-08-04 | 2023-09-05 | 四川深远石油钻井工具股份有限公司 | Screw drilling tool with self-adjusting output torque |
| CN116696228B (en) * | 2023-08-04 | 2023-11-28 | 四川深远石油钻井工具股份有限公司 | Screw drilling tool with self-adjusting output torque |
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Effective date of registration: 20191206 Address after: 618312 building 6, Section 2, Yuxi Road, Guanghan City, Deyang City, Sichuan Province Patentee after: Sichuan Taihe Petroleum Technology Co., Ltd Address before: 610500 No. 8, Xindu Road, Xindu science building, Xindu Road, Xindu District, Sichuan, Chengdu Patentee before: SICHUAN FEIXIANG ENERGY CO., LTD. |