CN104632978A - Drilling machine drilling buffering device - Google Patents
Drilling machine drilling buffering device Download PDFInfo
- Publication number
- CN104632978A CN104632978A CN201510060080.4A CN201510060080A CN104632978A CN 104632978 A CN104632978 A CN 104632978A CN 201510060080 A CN201510060080 A CN 201510060080A CN 104632978 A CN104632978 A CN 104632978A
- Authority
- CN
- China
- Prior art keywords
- piston
- coil
- piston rod
- slave cylinder
- clutch release
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/06—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using both gas and liquid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/53—Means for adjusting damping characteristics by varying fluid viscosity, e.g. electromagnetically
- F16F9/535—Magnetorheological [MR] fluid dampers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2224/00—Materials; Material properties
- F16F2224/04—Fluids
- F16F2224/045—Fluids magnetorheological
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2230/00—Purpose; Design features
- F16F2230/46—Maintenance
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The invention discloses a drilling machine drilling buffering device which comprises a working cylinder and a piston rod. A piston with the T-shaped longitudinal section is connected to the tail end of the piston rod in a threaded mode. Two semicircular baffles are hinged to the tail end of the vertical portion of the piston. A plurality of upper drainage holes are formed in the horizontal portion of the piston. The two baffles are provided with a plurality of lower drainage holes corresponding to the upper drainage holes. The diameter of the upper drainage holes is gradually increased from the middle to the two ends. A coil is arranged in the middle of the piston. During working, the diameter of the drainage holes is gradually increased from the middle to the two ends, so that the middles of the drainage holes are necked down, the grasping force of magnetorheological fluid at the upper and lower ends of the necking-down part on the piston is increased, and meanwhile the starting and stopping motion of the piston inside the working cylinder is achieved through rapid conversion of external voltage; due to the fact that no throttling valves with the variable throttling area is installed, the mechanical wear resistance of the drilling machine drilling buffering device is greatly improved, and the service life of the drilling machine drilling buffering device is prolonged.
Description
Technical field
The present invention relates to a kind of damping device, specifically refer to that a kind of rig creeps into damping device.
Background technique
In oil drilling, drive drilling tool fractured rock, creep into underground, get out the well of prescribed depth, obtain oil or rock gas for oil pumping unit or gas production machine.A conventional oil
rigform primarily of power engine, driver, working machine and supplementary equipment.In order to hoist and transfer drilling tool, casing running and control the pressure of the drill, send drilling tool to, drilling tool is equipped with hoisting system; Hoisting system comprises the various instrument such as winch, auxiliary brake, overhead traveling crane, tourist bus, hook, wire rope and suspension ring, elevator, tongs, slips.When hoisting, winch drum lay winding wire ropes, overhead traveling crane and tourist bus form auxiliary pulley group, and hook rises through the lifting that the instrument such as suspension ring, elevator realizes drilling tool; When transferring, drilling tool or casing string decline by deadweight, by the braking mechanism of winch and the lowering velocity of auxiliary brake control hook.When normally creeping into, realized the lifting of drilling tool by the instrument such as suspension ring, elevator, when transferring, drilling tool or casing string decline by deadweight, by the braking mechanism of winch and the lowering velocity of auxiliary brake control hook; When normally creeping into, controlled the feed rate of drilling tool by braking mechanism, a part for drilling tool weight is applied on drill bit as the pressure of the drill and realizes broken rock.
For alleviating the working load of drilling tool further; between drilling tool body and motive power outputting apparatus, damping device is installed; to facilitate the reducing effect stress when drilling tool and the larger lithosphere of hardness interact; reach the object of protection drilling tool; but in general damping device using process; mostly be Passive Control, namely adopt the vibration damper of oil gas or fluid spring structure, be generally adjustable.These adjustable shock absorbers change flow area by regulating the openings of sizes of throttle orifice, and carry out damping adjusting coefficient with this, the damping force of output changes with the stroke of vibration damper upper piston; But must be realized by the stroke reducing restriction and increase piston when tackling larger impact, result makes the quality of drilling tool when creeping into increase; And in long-term using process, when reaching the working life of coil, existing damping device is normally direct directly to be changed whole piston portion, though simply direct, but replacement cost is comparatively large, is unfavorable for using and promotes.
Summary of the invention
The object of the present invention is to provide a kind of rig to creep into damping device, make it have good damping characteristic to adapt to the fast drilling of its oil well in the geological stratification of complexity, facilitate the Maintenance and Repair of coil simultaneously.
Object of the present invention is achieved through the following technical solutions:
A kind of rig creeps into damping device, comprise the airtight clutch release slave cylinder in two ends and through clutch release slave cylinder end cap and its end is placed in the piston rod in clutch release slave cylinder, be the piston of T-shape in the described piston-rod end longitudinal section that is threaded, the vertical portion end of piston is hinged with two semicircular baffle plates, and in piston upper end, packing ring is installed, in piston, the nut for fixed piston and baffle plate is installed, the horizontal part of piston has multiple on discharge orifice, two baffle plates have lower discharge orifice corresponding to multiple and upper discharge orifice, the aperture of described upper discharge orifice is increased progressively to two ends by middle part, the middle part of piston is provided with coil, online ring outer wall is provided with cage ring, the inner hollow of piston rod, the connection wire of coil is connected with extraneous power supply through the inside of piston rod, also comprise floating piston, clutch release slave cylinder interior separation is become liquid container and air cavity by described floating piston, is filled with magnetic flow liquid in liquid container, is filled with the nitrogen of compression in air cavity.When the present invention works, the upper end of piston rod is fixedly connected with motive power outputting apparatus, and the lower end of clutch release slave cylinder is fixedly connected with drilling tool, when drilling tool works, coil is connected with external power supply by wire, by the adjustment of electric current, coil produces changes of magnetic field at liquid chamber, change magnetic field and liquid container in magnetic flow liquid have an effect, and then change the viscosity being entered the magnetic flow liquid in upper discharge orifice by piston upper end, and then change the size of damping force, reach the object of drilling tool damping, and because the stroke of piston rod is less, in the bottom of clutch release slave cylinder, floating piston is installed and clutch release slave cylinder interior separation is become two parts, i.e. liquid container and air cavity, the compressed nitrogen with certain initial pressure is filled with in air cavity, can the Volume Changes of effective replenisher body cavity, make it have good damping characteristic to adapt to the fast drilling of its oil well in the geological stratification of complexity, reach the object of protection drilling tool,
Wherein, the aperture of described upper discharge orifice is increased progressively to two ends by middle part, existing damping device is then by regulating the openings of sizes of throttle orifice to change flow area, damping adjusting coefficient is carried out with this, the damping force exported changes with the stroke of vibration damper upper piston, but must be realized by the stroke reducing restriction and increase piston when tackling larger impact, result makes the quality of drilling tool when creeping into increase, when the present invention works, magnetic flow liquid flows through the two ends up and down of piston by upper discharge orifice, namely the circulation of magnetic flow liquid in liquid container is realized, under extraneous power supply regulation and control, coil is made to produce changes of magnetic field in liquid container, and changes of magnetic field causes the viscosity of magnetic flow liquid, and the aperture of upper discharge orifice is increased progressively to two ends by middle part, namely the middle reducing of upper discharge orifice is realized, magnetic flow liquid is increased the grasp of piston at reducing upper and lower two ends place, lower discharge orifice is then common through hole, make piston smooth outflow in magnetic flow liquid, reduce the movement of piston in liquid container and occur pause and transition in rhythm or melody sense, ensure piston quick stop motion in liquid container, simultaneously by the rapid conversion of external voltage, realize the start and stop campaign of piston in clutch release slave cylinder, and then realize the shock-absorbing function of drilling tool, owing to not installing the variable throttle valve of orifice size in the present invention, and then substantially increase the mechanical wear resistance energy of device, extend working life of the present invention, the present invention is that "T"-shaped piston bottom end chain connection has two baffle plates in longitudinal section, coil and cage ring are then set on the vertical portion of piston, by the screw-thread fit of nut and piston rod end, coil and cage ring are fixed by two baffle plates, and on baffle plate, have the lower discharge orifice corresponding with upper discharge orifice, in the process that piston moves down with piston rod magnetic flow liquid by discharge orifice under the gap between the vertical portion of piston and clutch release slave cylinder inwall flows in discharge orifice, under the control of external voltage, the charged rear generation changes of magnetic field of coil, to increase or to reduce the damping force of piston in liquid container, when the life time of coil expires or is impaired, can directly open end cap piston is taken out, make baffle plate parallel with the vertical portion of piston by rotating nut, fast coil can be taken out and change, and then avoid piston integral replacing directly, greatly reduce the user cost of this device.
Described coil comprises the first coil and the second coil that are electrically connected to each other, and is provided with spacing block between the first coil and the second coil.Coil operationally, the magnetic line of force that coil produces from one end of piston through magnetic flow liquid, pass through clutch release slave cylinder, piston is got back to from the other end of piston, form a closed flux loop, in whole loop, the magnetic line of force is parallel to clutch release slave cylinder perpendicular to magnetic flow liquid, the Magnetic flux density now worked is higher, due to the permeability lower easy generation magnetic flux supersaturation of work, the magnetic intensity affecting whole magnetic circuit increases, the magnetic induction intensity scope of magnetic flow liquid job requirement cannot be met, the present invention is provided with two identical and coils be electrically connected to each other, i.e. the first coil and the second coil, and between the first coil with the second coil, be equipped with spacing block superpose with the magnetic flux line reduced between two coils, make the Magnetic field distribution around piston even, damping force stress raisers preventing piston to be subject in damping environment and cause piston impaired, and then improve the working life of piston.
Described first coil is contrary with the direction of winding of described second coil.As preferably, first coil is set to contrary with the direction of winding of the second coil, make to be in two different magnetic field environments at the two ends up and down of liquid container inner carrier, ensure to reach stable working state fast in the start and stop movement process of piston, improve the damping performance of drilling tool.
Also comprise upper rings and lower lift ring, and upper rings is fixed on piston rod upper end portion, lower lift ring is fixed on the underpart of clutch release slave cylinder.By upper rings and lower lift ring, shock-damping structure is fixed on drilling tool and motive power outputting apparatus fast, and facilitates the field-strip of shock-damping structure, reduce the working strength of workman, reduce the consumption of non-working time.
Also comprise seal ring and O grommet type seal, for the axial seal of piston rod on the inwall that described seal ring is arranged on end cap, described O grommet type seal is arranged on the isolation for air cavity and liquid container on floating piston.For preventing the leakage of magnetic flow liquid, the part contacted with clutch release slave cylinder when piston axial motion is provided with sealing gasket, avoid because magnetic flow liquid runs off and cause the viscosity in liquid container to be not enough to support piston, the O grommet type seal that floating piston is installed can prevent magnetic flow liquid to slide to air cavity by under liquid container, and in raising air cavity, compressed nitrogen is to the holding strength of floating piston.
The present invention compared with prior art, has following advantage and beneficial effect:
1, the aperture of upper discharge orifice of the present invention is increased progressively to two ends by middle part, namely the middle reducing of upper discharge orifice is realized, magnetic flow liquid is increased the grasp of piston at reducing upper and lower two ends place, ensure piston quick stop motion in liquid container, simultaneously by the rapid conversion of external voltage, realize the start and stop campaign of piston in clutch release slave cylinder, and then realize the shock-absorbing function of drilling tool, owing to not installing the variable throttle valve of orifice size in the present invention, and then substantially increase the mechanical wear resistance energy of device, extend working life of the present invention;
2, the present invention is provided with two identical and coils be electrically connected to each other, i.e. the first coil and the second coil, and between the first coil with the second coil, be equipped with spacing block superpose with the magnetic flux line reduced between two coils, make the Magnetic field distribution around piston even, damping force stress raisers preventing piston to be subject in damping environment and cause piston impaired, and then the working life of improving piston;
3, the first coil is set to contrary with the direction of winding of the second coil by the present invention, make to be in two different magnetic field environments at the two ends up and down of liquid container inner carrier, ensure to reach stable working state fast in the start and stop movement process of piston, improve the damping performance of drilling tool.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide the further understanding to the embodiment of the present invention, forms a application's part, does not form the restriction to the embodiment of the present invention.In the accompanying drawings:
Fig. 1 is structural representation of the present invention;
Mark and corresponding component title in accompanying drawing:
Discharge orifice, 18-baffle plate under 1-upper rings, 2-end cap, 3-seal ring, 4-clutch release slave cylinder, 5-piston rod, 6-packing ring, the upper discharge orifice of 7-, 8-cage ring, 9-coil, 10-piston, 11-nut, 12-magnetic flow liquid, 13-O grommet type seal, 14-floating piston, 15-air cavity, 16-lower lift ring, 17-.
Embodiment
Clearly understand for making the object, technical solutions and advantages of the present invention, below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, and exemplary embodiment of the present invention and explanation thereof are only for explaining the present invention, not as a limitation of the invention.
Embodiment
As shown in Figure 1, the present embodiment comprise the airtight clutch release slave cylinder in two ends 4 and through clutch release slave cylinder 4 end cap 2 and its end is placed in the piston rod 5 in clutch release slave cylinder 4, the piston 10 that longitudinal section is T-shape is connected with in described piston rod 5 end thread, the vertical portion end of piston 10 is hinged with two semicircular baffle plates 18, and in piston 10 upper end, packing ring 6 is installed, nut 11 for fixed piston 10 and baffle plate 18 is installed in piston 10 lower end, the horizontal part of piston 10 has multiple on discharge orifice 7, two baffle plates 18 have lower discharge orifice 17 corresponding to multiple and upper discharge orifice 7, the aperture of described upper discharge orifice 7 is increased progressively to two ends by middle part, the middle part of piston 10 is provided with coil 9, coil 9 outer wall is provided with cage ring 8, the inner hollow of piston rod 5, the connection wire of coil 9 is connected with extraneous power supply through the inside of piston rod 5, also comprise floating piston 14, clutch release slave cylinder 4 interior separation is become liquid container and air cavity 15 by described floating piston 14, is filled with magnetic flow liquid 12 in liquid container, is filled with the nitrogen of compression in air cavity 15, also comprise upper rings 1 and lower lift ring 16, and upper rings 1 is fixed on piston rod 5 upper end portion, lower lift ring 16 is fixed on the underpart of clutch release slave cylinder 4, also comprise seal ring 3 and O grommet type seal 13, for the axial seal of piston rod 5 on the inwall that described seal ring 3 is arranged on end cap 2, described O grommet type seal 13 is arranged on floating piston 14 for the isolation of air cavity 15 with liquid container, described piston rod 5 and piston 10 screw-thread fit, and in piston 10 upper end, packing ring 6 is installed, in piston 10 lower end, nut 11 is installed.
When the present invention works, by upper rings 1 and lower lift ring 16, shock-damping structure is made to be fixed on drilling tool and motive power outputting apparatus fast, and facilitate the field-strip of shock-damping structure, reduce the working strength of workman, reduce the consumption of non-working time, when drilling tool works, coil 9 is connected with external power supply by wire, by the adjustment of electric current, coil 9 produces changes of magnetic field at liquid chamber, change magnetic field and liquid container in magnetic flow liquid 12 have an effect, and then change the viscosity being entered the magnetic flow liquid 12 in upper discharge orifice 7 by piston about 10 two ends, and then change the size of damping force, reach the object of drilling tool damping, and because the stroke of piston rod 5 is less, in the bottom of clutch release slave cylinder 4, floating piston 14 is installed and clutch release slave cylinder 4 interior separation is become two parts, i.e. liquid container and air cavity 15, the compressed nitrogen with certain initial pressure is filled with in air cavity 15, can the Volume Changes of effective replenisher body cavity, make it have good damping characteristic to adapt to the fast drilling of its oil well in the geological stratification of complexity, reach the object of protection drilling tool,
Wherein, the aperture of described upper discharge orifice 7 is increased progressively to two ends by middle part, existing damping device is then by regulating the openings of sizes of throttle orifice to change flow area, damping adjusting coefficient is carried out with this, the damping force exported changes with the stroke of vibration damper upper piston 10, but must be realized by the stroke reducing restriction and increase piston 10 when tackling larger impact, result makes the quality of drilling tool when creeping into increase, when the present invention works, magnetic flow liquid 12 flows through the two ends up and down of piston 10 by upper discharge orifice 7, namely the circulation of magnetic flow liquid 12 in liquid container is realized, under extraneous power supply regulation and control, coil 9 is made to produce changes of magnetic field in liquid container, and changes of magnetic field causes the viscosity of magnetic flow liquid 12, and the aperture of upper discharge orifice 7 is increased progressively to two ends by middle part, namely the middle reducing of upper discharge orifice 7 is realized, magnetic flow liquid 12 is increased the grasp of piston 10 at reducing upper and lower two ends place, lower discharge orifice 17 is then common through hole, make piston 10 smooth outflow in magnetic flow liquid, reduce the movement of piston 10 in liquid container and occur pause and transition in rhythm or melody sense, ensure piston 10 quick stop motion in liquid container, simultaneously by the rapid conversion of external voltage, realize the start and stop campaign of piston 10 in clutch release slave cylinder 4, and then realize the shock-absorbing function of drilling tool, owing to not installing the variable throttle valve of orifice size in the present invention, and then substantially increase the mechanical wear resistance energy of device, extend working life of the present invention, the present invention is that "T"-shaped piston 10 bottom chain connection has two baffle plates 18 in longitudinal section, coil 9 and cage ring 8 are set on the vertical portion of piston 10, by the screw-thread fit of nut 11 with piston rod 5 end, coil 9 and cage ring 8 are fixed by two baffle plates 18, and on baffle plate 18, have the lower discharge orifice 17 corresponding with upper discharge orifice 7, in the process that piston 10 moves down with piston rod 5 magnetic flow liquid by discharge orifice 7 under the gap between the vertical portion of piston 10 and clutch release slave cylinder 4 inwall flows in discharge orifice 17, under the control of external voltage, the charged rear generation changes of magnetic field of coil 9, to increase or to reduce the damping force of piston 10 in liquid container, when the life time of coil 9 expires or is impaired, directly can open end cap 2 piston 10 is taken out, make baffle plate 18 parallel with the vertical portion of piston 10 by rotating nut 11, fast coil 9 can be taken out replacing, and then avoid piston integral replacing directly, greatly reduce the user cost of this device.
Further, for preventing the leakage of magnetic flow liquid 12, the part contacted with clutch release slave cylinder 4 when piston 10 axial motion is provided with sealing gasket, avoid because magnetic flow liquid 12 runs off and cause the viscosity in liquid container to be not enough to support piston 10, the O grommet type seal 13 that floating piston 14 is installed can prevent magnetic flow liquid 12 by sliding to air cavity 15 under liquid container, and in raising air cavity 15, compressed nitrogen is to the holding strength of floating piston 14.
Above-described embodiment; object of the present invention, technological scheme and beneficial effect are further described; be understood that; the foregoing is only the specific embodiment of the present invention; the protection domain be not intended to limit the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (3)
1. a rig creeps into damping device, comprise the airtight clutch release slave cylinder in two ends (4) and through clutch release slave cylinder (4) end cap (2) and its end is placed in the piston rod (5) in clutch release slave cylinder (4), it is characterized in that: be connected with in described piston rod (5) end thread the piston (10) that longitudinal section is T-shape, the vertical portion end of piston (10) is hinged with two semicircular baffle plates (18), and in piston (10) upper end, packing ring (6) is installed, nut (11) for fixed piston (10) and baffle plate (18) is installed in piston (10) lower end, the horizontal part of piston (10) has multiple upper discharge orifice (7), two baffle plates (18) have lower discharge orifice (17) corresponding to multiple and upper discharge orifice (7), the aperture of described upper discharge orifice (7) is increased progressively to two ends by middle part, the middle part of piston (10) is provided with coil (9), coil (9) outer wall is provided with cage ring (8), the inner hollow of piston rod (5), the connection wire of coil (9) is connected with extraneous power supply through the inside of piston rod (5), also comprise floating piston (14), clutch release slave cylinder (10) interior separation is become liquid container and air cavity (15) by described floating piston (14), is filled with magnetic flow liquid (12) in liquid container, is filled with the nitrogen of compression in air cavity (15).
2. a kind of rig according to claim 1 creeps into damping device, it is characterized in that: also comprise upper rings (1) and lower lift ring (16), and upper rings (1) is fixed on piston rod (5) upper end portion, lower lift ring (16) is fixed on the underpart of clutch release slave cylinder (10).
3. a kind of rig according to claim 1 creeps into damping device, it is characterized in that: also comprise seal ring (3) and O grommet type seal (13), for the axial seal of piston rod (5) on the inwall that described seal ring (3) is arranged on end cap (2), described O grommet type seal (13) is arranged on floating piston (14) for the isolation of air cavity (15) with liquid container.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510060080.4A CN104632978B (en) | 2015-02-05 | 2015-02-05 | Drilling machine drilling buffering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510060080.4A CN104632978B (en) | 2015-02-05 | 2015-02-05 | Drilling machine drilling buffering device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104632978A true CN104632978A (en) | 2015-05-20 |
| CN104632978B CN104632978B (en) | 2017-01-11 |
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ID=53212068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510060080.4A Active CN104632978B (en) | 2015-02-05 | 2015-02-05 | Drilling machine drilling buffering device |
Country Status (1)
| Country | Link |
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| CN (1) | CN104632978B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108368909A (en) * | 2015-12-10 | 2018-08-03 | Zf腓特烈斯哈芬股份公司 | Damper for motor vehicle |
| CN111749627A (en) * | 2020-07-06 | 2020-10-09 | 重庆三曦科技有限公司 | Drilling rod vibration damper for exploration |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3220517A (en) * | 1962-10-30 | 1965-11-30 | Best available copy | |
| GB1369895A (en) * | 1972-02-02 | 1974-10-09 | Vetco Offshore Ind Inc | Apparatus for maintaining a predetermined stress in a running strin for wells |
| US4449854A (en) * | 1981-02-12 | 1984-05-22 | Nl Industries, Inc. | Motion compensator system |
| US6386343B1 (en) * | 2001-04-30 | 2002-05-14 | Delphi Technologies, Inc. | Temperature compensating flux ring |
| US6637556B1 (en) * | 2002-08-05 | 2003-10-28 | Delphi Technologies, Inc. | Magneto-rheological damper with grooved fluid passages |
| WO2010015647A1 (en) * | 2008-08-06 | 2010-02-11 | Basf Se | Magnetorheological valve |
| CN203926577U (en) * | 2014-06-27 | 2014-11-05 | 四川工程职业技术学院 | Magnetorheological fluid shock absorber |
| CN204113993U (en) * | 2014-08-29 | 2015-01-21 | 万向钱潮股份有限公司 | The magnetorheological front vibration damper of a kind of double-deck single cylinder gas compensation formula |
| CN204572897U (en) * | 2015-02-05 | 2015-08-19 | 成都北方石油勘探开发技术有限公司 | A kind of vibration damper for oil well drilling |
-
2015
- 2015-02-05 CN CN201510060080.4A patent/CN104632978B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3220517A (en) * | 1962-10-30 | 1965-11-30 | Best available copy | |
| GB1369895A (en) * | 1972-02-02 | 1974-10-09 | Vetco Offshore Ind Inc | Apparatus for maintaining a predetermined stress in a running strin for wells |
| US4449854A (en) * | 1981-02-12 | 1984-05-22 | Nl Industries, Inc. | Motion compensator system |
| US6386343B1 (en) * | 2001-04-30 | 2002-05-14 | Delphi Technologies, Inc. | Temperature compensating flux ring |
| US6637556B1 (en) * | 2002-08-05 | 2003-10-28 | Delphi Technologies, Inc. | Magneto-rheological damper with grooved fluid passages |
| WO2010015647A1 (en) * | 2008-08-06 | 2010-02-11 | Basf Se | Magnetorheological valve |
| CN203926577U (en) * | 2014-06-27 | 2014-11-05 | 四川工程职业技术学院 | Magnetorheological fluid shock absorber |
| CN204113993U (en) * | 2014-08-29 | 2015-01-21 | 万向钱潮股份有限公司 | The magnetorheological front vibration damper of a kind of double-deck single cylinder gas compensation formula |
| CN204572897U (en) * | 2015-02-05 | 2015-08-19 | 成都北方石油勘探开发技术有限公司 | A kind of vibration damper for oil well drilling |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108368909A (en) * | 2015-12-10 | 2018-08-03 | Zf腓特烈斯哈芬股份公司 | Damper for motor vehicle |
| CN111749627A (en) * | 2020-07-06 | 2020-10-09 | 重庆三曦科技有限公司 | Drilling rod vibration damper for exploration |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104632978B (en) | 2017-01-11 |
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