CN201377522Y - Flexible cardan shaft - Google Patents
Flexible cardan shaft Download PDFInfo
- Publication number
- CN201377522Y CN201377522Y CN200820173243U CN200820173243U CN201377522Y CN 201377522 Y CN201377522 Y CN 201377522Y CN 200820173243 U CN200820173243 U CN 200820173243U CN 200820173243 U CN200820173243 U CN 200820173243U CN 201377522 Y CN201377522 Y CN 201377522Y
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- Prior art keywords
- joint
- active
- semi
- face
- flexible
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- Expired - Lifetime
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 28
- 239000010959 steel Substances 0.000 claims abstract description 28
- 230000008859 change Effects 0.000 claims abstract description 8
- 238000009954 braiding Methods 0.000 claims description 5
- 230000001066 destructive effect Effects 0.000 claims description 5
- 238000005452 bending Methods 0.000 claims description 4
- 238000005461 lubrication Methods 0.000 claims description 4
- 241001391944 Commicarpus scandens Species 0.000 abstract 1
- 238000005065 mining Methods 0.000 abstract 1
- 238000005553 drilling Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000003292 diminished effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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- Flexible Shafts (AREA)
Abstract
The utility model discloses a flexible cardan shaft, which is characterized in that the outer structure of the gimbal of the cardan shaft is formed by an elastic sleeve woven by elastic steel wires or steel bars, and the elastic sleeve substitutes for a petal-type connecting body; the rigid hard connection is changed into the flexible soft connection, and the elastic sleeve mainly bear the torque of the cardan shaft, and has flexible and convenient rotation and extremely high wear resistance. When in normal use, the torque is mainly transmitted by steel wires or steel bars, and when the elastic sleeve bears the torsion force or other forces, the sleeve is flexible so as to slow down the impact of force, and change the torque into tensile force, so the sleeve is not easy to break, and has longer service life; movable joint components are arranged in the inner cavity of the elastic sleeve, and gaps between the movable joints can be utilized to form rotating surfaces with various angles; and the adjustment can be completed according to the actual needs, thereby satisfying the achievement of various application angles in industries and mining so as to meet the requirements of customers.
Description
Technical field
The utility model relates to a kind of cardan shaft of free camber, particularly is fit to the cardan shaft that different cambers change the helicoid hydraulic motor use that requires.
Background technique
Helicoid hydraulic motor is widely used in a plurality of fields, as geologic prospecting, drilling well, well workover, the exploitation of coal gas layer, the crossing construction of various pipelines and defence engineering aspect creep into operation.And in recent years in the drilling well of oil gas field, helicoid hydraulic motor is used to special well, and at this moment requires helicoid hydraulic motor must be adapted to the conversion of various angles.As bore directional well, high angle hole, horizontal well, extended reach well, multilateral well, cluster well etc. and also can use its drilling straight-hole simultaneously.
Helicoid hydraulic motor is made up of by-pass valve assembly, motor assembly, cardan shaft assembly, this four major part of driving-shaft assembly.
Cardan shaft assembly in the present helicoid hydraulic motor (in curved housing), its camber connecting shaft body all adopts the fixedly connecting shaft body of camber scope, when drillng operation, a kind of angle of every change must be changed the curved housing of respective angles and connect the variation that axis body could be realized angle.This is because at present the coupling shaft that uses is thick walled tube radially to be cut into intermeshing two branches and the petal body that do not disconnect, the line of cut of sealing constitutes certain interval, the size in gap depends on the size of camber scope, because two lobe intracoelomic cavities are by ball seat and spheroid or scratch lever arrangement and bear pressure, the moment of torsion transmission that while lobe body bears drilling tool, wearing and tearing gradually in use, the gap of lobe seam is strengthened gradually, and ball seat and spheroid or the wearing and tearing of scratching bar also diminish gradually or shorten, axial clearance is increased gradually, so the lobe body bears certain axial pressure at work, its gathering throat also just diminishes gradually, make two lobe bodies more and more dumb, and strengthened transmitting torque, more increased the increasing of lobe body cutting gap.When the gap increases to certain limit, under drilling tool moment of torsion and pulling force, two lobe bodies are very easily thrown off, will inevitably cause drilling failure like this, so the cardan shaft that uses creeps into because of raising (referring to special well, high angle hole, horizontal well, extended reach well, multilateral well, cluster well, straight well, well logging) little drilling tool that just can not adapt to heavy camber of angle as cardan shaft in drilling process that drilling well requires at present, must change cardan shaft, the petal partial aperture is diminished bear excessive torque and camber is excessive, accelerated the speed of wearing and tearing and drilling tool was lost efficacy in advance.Particularly lobe formula cardan shaft comes transmitting torque by the friction of face and face, and not only operating life is shorter relatively for he, and has also consumed a large amount of mechanical energy at work, has reduced the output torque of drilling tool, has reduced the efficient of motor.The present structure of the cardan shaft demand of the various drillng operations of incompatibility thus.
The design will adapt to various angles variations and bring bigger convenience and benefit to the user with the succinct and durable structure of a kind of novelty.
The model utility content
Technical problem to be solved in the utility model provides the flexible universal shaft that a kind of simple in structure, long service life, the various angles of adaptation change.
For solving the problems of the technologies described above, the technical solution of the utility model is: flexible universal shaft, comprise first joint of importing power and second joint of outputting power, and be provided with universal joint between described first joint and described second joint, described universal joint comprises:
The resilient sleeve of elastic wire or steel bar braiding, two ends are fixedly mounted on described first joint and second joint, are used for transmitting torque and adapt to power input shaft and the change in location of pto.
Active joint assembly, be installed in described resilient sleeve inside, degrees of freedom with any bending, be used to prevent moving axially between described first joint and second joint, and stop the elastic wire of described resilient sleeve or steel bar destructive crooked to the resilient sleeve inner chamber, the active joint in the two ends of described active joint assembly is connected to described first joint and second joint respectively, and perhaps the active joint in two ends is respectively as the part of described first joint and second joint.
As a kind of preferred scheme, described elastic wire or steel bar are left-handed on described sleeve to be arranged alternately with dextrorotation.
As a kind of preferred scheme, described active joint assembly comprises at least three active joints, has between the described adjacent two active joint end faces to be respectively equipped with the spherical shape pit on certain interval and the end face, in the described pit steel ball is installed.
As to improvement of the technical scheme, be provided with the lubrication channel that is communicated with spherical shape pit and described active joint outer surface in the described active joint.
As a kind of preferred scheme, described active joint assembly comprises at least three active joints, an active joint end face between the described adjacent two active joints is provided with the semi-cylindrical projection, another active joint end face between the described adjacent two active joints is provided with the semi-cylindrical groove that matches with the semi-cylindrical projection, and the semi-cylindrical projection on end face of the active joint in described centre or the axis of semi-cylindrical projection on semi-cylindrical groove and another end face or semi-cylindrical groove differ 90 °.
As to improvement of the technical scheme, an end face of the active joint in described centre is provided with the semi-cylindrical projection, and another end face is provided with the semi-cylindrical groove.
Owing to adopted technique scheme, the external structure of the universal joint of cardan shaft has been replaced the connecting body of petal type by the resilient sleeve of elastic wire or steel bar braiding, hard connection by firm formula becomes flexible being flexible coupling, mainly bear the moment of torsion of cardan shaft by it, mainly do not bearing under the situation of pressure, rotate flexiblely, high wear resistance is arranged.During normal use, moment of torsion mainly by steel wire or steel bar transmission, when bearing torsion or other power, because it is flexible, has slowed down the impact of power, and torque axis has been become pulling force, so be not easy fracture, the life-span is longer.The elastic wire that moves axially, can stop again described resilient sleeve that can prevent between described first joint and second joint or steel bar have been installed to the destructive crooked active joint assembly of inner chamber at the inner chamber of resilient sleeve, utilize the slit between the active joint, can form the rotation surface of various different amount, its adjusting can be finished according to actual needs, therefore can satisfy the realization of various application point in the industrial and mineral, satisfy requirement of client.
Description of drawings
Fig. 1 is the utility model embodiment one a structural representation;
Fig. 2 is the utility model embodiment two a structural representation.
Embodiment
Embodiment one:
As shown in Figure 1, flexible universal shaft comprises first joint 1 of importing power and second joint 2 of outputting power, is provided with universal joint between described first joint 1 and described second joint 2, and described universal joint comprises:
The resilient sleeve 3 of elastic wire or steel bar braiding, two ends are fixedly mounted on described first joint 1 and second joint 2, are used for transmitting torque and adapt to power input shaft and the change in location of pto; Described resilient sleeve 3 is the two-layer at least sleeve of elastic wire or steel bar braiding.Described elastic wire or steel bar are left hand screw on described sleeve and right-hand screw is arranged alternately, and the two ends of every steel wire or steel bar all are fixed on described first joint 1 and second joint 2.
Described active joint assembly 4 comprises at least three active joints, and present embodiment shows the situation of four active joints, has between the described adjacent two active joint end faces to be respectively equipped with the spherical shape pit on certain interval and the end face, and steel ball 44 is installed in the described pit.
Be provided with the lubrication channel 45 that is communicated with spherical shape pit and described active joint outer surface in the described active joint 41,42,43, lubrication channel 45 can guarantee that mud enters in the spherical shape pit by the slit of resilient sleeve 3, play the effect of lubricated steel ball 44, guarantee that active joint work is flexible.
Present embodiment satisfies the demand of industrial and mineral operation in the existing scope by the following aspects:
1. the external structure of universal joint is worked out by steel wire or steel bar, and the adjustment of camber is more prone to; 2. lubricate each inner parts to reduce friction through the steel wire filtered liquid, prolonged working life; 3. because it is flexible bearing the resilient sleeve of moment of torsion, can slow down various drags largely, the difficult fracture, the life-span is longer; 4. because its frictional force is very little, can greatly reduce the loss during transmitting torque, thus the efficient of raising motor, energy saving.
Embodiment two:
Present embodiment and embodiment's one structure is basic identical, and difference is that described active joint assembly distinguishes to some extent.
In the present embodiment, described active joint assembly 4 comprises at least three active joints, present embodiment shows the situation of six active joints, an active joint end face between the described adjacent two active joints is provided with semi-cylindrical projection 51, another active joint end face between the described adjacent two active joints is provided with the semi-cylindrical groove that matches with the semi-cylindrical projection, and the semi-cylindrical projection on end face of the active joint in described centre or the axis of semi-cylindrical projection on semi-cylindrical groove and another end face or semi-cylindrical groove differ 90 °.
In the present embodiment, an end face of the active joint in described centre is provided with the semi-cylindrical projection, and another end face is provided with the semi-cylindrical groove.Active joint was identical in the middle of this structure made, thereby can select any joint number combination, reduced production costs, and was convenient to maintain and replace.
The described active joint assembly of present embodiment also has the effect of transmitting torque, thereby has shared the moment of torsion transmission of resilient sleeve except the effect of the described active joint assembly that occupy embodiment one, has prolonged working life.
Above embodiment only is the distance of the utility model preferred forms, rather than to the restriction of the utility model protection domain.As the common engineers and technicians of related domain, any equivalence techniques conversion of making based on invention spirit of the present utility model is all within protection domain of the present utility model.
Claims (6)
1. flexible universal shaft comprises first joint of importing power and second joint of outputting power, is provided with universal joint between described first joint and described second joint, and it is characterized in that: described universal joint comprises
The resilient sleeve of elastic wire or steel bar braiding, two ends are fixedly mounted on described first joint and second joint, are used for transmitting torque and adapt to power input shaft and the change in location of pto;
Active joint assembly, be installed in described resilient sleeve inside, degrees of freedom with any bending, be used to prevent moving axially between described first joint and second joint, and stop the elastic wire of described resilient sleeve or steel bar destructive crooked to the resilient sleeve inner chamber, the active joint in the two ends of described active joint assembly is connected to described first joint and second joint respectively, and perhaps the active joint in two ends is respectively as the part of described first joint and second joint.
2. flexible universal shaft as claimed in claim 1 is characterized in that: described elastic wire or steel bar are left-handed on described sleeve to be arranged alternately with dextrorotation.
3. flexible universal shaft as claimed in claim 1 or 2, it is characterized in that: described active joint assembly comprises at least three active joints, have between the described adjacent two active joint end faces and be respectively equipped with the spherical shape pit on certain interval and the end face, in the described pit steel ball is installed.
4. flexible universal shaft as claimed in claim 3 is characterized in that: be provided with the lubrication channel that is communicated with spherical shape pit and described active joint outer surface in the described active joint.
5. flexible universal shaft as claimed in claim 1 or 2, it is characterized in that: described active joint assembly comprises at least three active joints, an active joint end face between the described adjacent two active joints is provided with the semi-cylindrical projection, another active joint end face between the described adjacent two active joints is provided with the semi-cylindrical groove that matches with the semi-cylindrical projection, and the semi-cylindrical projection on end face of the active joint in described centre or the axis of semi-cylindrical projection on semi-cylindrical groove and another end face or semi-cylindrical groove differ 90 °.
6. flexible universal shaft as claimed in claim 5 is characterized in that: an end face of the active joint in described centre is provided with the semi-cylindrical projection, and another end face is provided with the semi-cylindrical groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200820173243U CN201377522Y (en) | 2008-10-16 | 2008-10-16 | Flexible cardan shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200820173243U CN201377522Y (en) | 2008-10-16 | 2008-10-16 | Flexible cardan shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201377522Y true CN201377522Y (en) | 2010-01-06 |
Family
ID=41517630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200820173243U Expired - Lifetime CN201377522Y (en) | 2008-10-16 | 2008-10-16 | Flexible cardan shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201377522Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101429974B (en) * | 2008-10-16 | 2012-03-28 | 潍坊盛德石油机械制造有限公司 | Flexible universal shaft |
| CN103132926A (en) * | 2013-01-30 | 2013-06-05 | 天津大学 | Hollow universal joint for rotary steerable drilling |
| CN103452498A (en) * | 2013-09-17 | 2013-12-18 | 天津大学 | Rotary steerable drilling universal joint |
| CN106704396A (en) * | 2017-01-03 | 2017-05-24 | 王明中 | Universal transmission shaft |
| CN111235715A (en) * | 2020-01-14 | 2020-06-05 | 秦胜建 | A pressure roller equipment for flexible winding with adjustable distance between grinding rollers applied to warping machines |
| CN116856846A (en) * | 2023-07-03 | 2023-10-10 | 中交一公局西南工程有限公司 | Drilling device for blasting |
-
2008
- 2008-10-16 CN CN200820173243U patent/CN201377522Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101429974B (en) * | 2008-10-16 | 2012-03-28 | 潍坊盛德石油机械制造有限公司 | Flexible universal shaft |
| CN103132926A (en) * | 2013-01-30 | 2013-06-05 | 天津大学 | Hollow universal joint for rotary steerable drilling |
| CN103132926B (en) * | 2013-01-30 | 2014-09-17 | 天津大学 | Hollow universal joint for rotary steerable drilling |
| CN103452498A (en) * | 2013-09-17 | 2013-12-18 | 天津大学 | Rotary steerable drilling universal joint |
| CN103452498B (en) * | 2013-09-17 | 2015-06-03 | 天津大学 | Rotary steerable drilling universal joint |
| CN106704396A (en) * | 2017-01-03 | 2017-05-24 | 王明中 | Universal transmission shaft |
| CN111235715A (en) * | 2020-01-14 | 2020-06-05 | 秦胜建 | A pressure roller equipment for flexible winding with adjustable distance between grinding rollers applied to warping machines |
| CN111235715B (en) * | 2020-01-14 | 2021-06-15 | 宁夏爱丽纳地毯有限公司 | Be applied to grinding roller clearance roll-setting flexible winding's of warper compression roller equipment |
| CN116856846A (en) * | 2023-07-03 | 2023-10-10 | 中交一公局西南工程有限公司 | Drilling device for blasting |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: He Bo Inventor after: Dan Lianmao Inventor after: Feng Shijun Inventor after: Wang Futao Inventor after: Feng Baozhong Inventor before: He Bo Inventor before: Dan Lianmao Inventor before: Feng Shijun Inventor before: Wang Futao Inventor before: Feng Baozhong |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20100106 Effective date of abandoning: 20081016 |