CN2199332Y - Pawl-centrifugal return preventing device for ground driving screw oil extracting pump - Google Patents
Pawl-centrifugal return preventing device for ground driving screw oil extracting pump Download PDFInfo
- Publication number
- CN2199332Y CN2199332Y CN 94225483 CN94225483U CN2199332Y CN 2199332 Y CN2199332 Y CN 2199332Y CN 94225483 CN94225483 CN 94225483 CN 94225483 U CN94225483 U CN 94225483U CN 2199332 Y CN2199332 Y CN 2199332Y
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- China
- Prior art keywords
- ratchet
- centrifugal
- pawl
- driving screw
- spring
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- Expired - Fee Related
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- One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)
Abstract
The utility model relates to a pawl-centrifugal return preventing device of a ground driving screw oil extracting pump. The device is composed of an overdrive clutch of pawl-centrifugal type and a brake which are arranged on the input shaft shell of an oil extracting pump speed reducing box and a leather belt pulley. When the device works, the pawl overcoming spring pressure by centrifugal force is detached with a ratchet wheel to realize operation without abrasion. When the device is powered off, the pawl is jointed with the ratchet wheel under the acting force of the spring. The brake on the ratchet wheel plays an action of reverse braking to release partial potential energy of a drive screw, and simultaneously, enough residual potential energy is conserved to ensure the drive screw without tripping. The device has the advantages of simple structure, low cost, safety and long service life.
Description
The utility model relates to a kind of centrifugal anti-reverse mechanism of oil field ground surface driving screw rod oil extraction pump ratchet that is used for.
Ground surface driving screw rod oil extraction pump, owing between driving head and the screw pump driveshaft that reaches km is arranged, driveshaft torsional deflection in the working procedure and storage of potential energy.When running into certain situation shutdown, the abrupt release of driveshaft elastic potential energy, the anti-ground installation that drives reverses, and the moment of inertia that the surface drive counter-rotating produces and the shackle moment of a certain box cupling of driveshaft will cause that driveshaft disconnects, and has an accident.In order to address this problem, the manufacturer of each ground drive screw oil extraction pump has adopted electronic, anti-reverse mechanism machinery, hybrid type, but from use condition, ubiquity some unfavorable factors.As: the amazing effect of breaking of the unexpected power failure of electrical braking or belt, also have the lubricated bad of post wedge-type free wheel device anti-reverse mechanism, serious wear, the life-span lacks, and price is also higher.
In order to solve the shutdown counter-rotating problem of ground surface driving screw rod oil extraction pump, overcome the deficiency that prior art exists, the purpose of this utility model be to design a kind of simple in structure, cost is low, the ground surface driving screw rod oil extraction pump anti-reverse mechanism of long service life.Reaching when making this device busy does not have the wearing and tearing running, can discharge driveshaft part potential energy during shutdown, can preserve enough residual potential energy again, guarantees that driveshaft do not thread off.
In order to achieve the above object, the project organization of the centrifugal anti-reverse mechanism of ground surface driving screw rod oil extraction pump ratchet of the present utility model has comprised the speed reducer cover (1) by ground surface driving screw rod oil extraction pump, fixed plate (2), clamping strap (3), friction band (4), spring (16), nut (17), double-screw bolt (18), clamping plate (21), (25), spring stamen (22), pin sleeve (23), bearing pin (24), rivet (26), the band brake that is constituted and by hexagon socket head cap screw (5), spring (6), setting sleeve (7), nut (8), ratchet (9), Pulley shaft (10), belt pulley (11), drive plate (12), ratchet (13), pawl axis (14), speed reducer casing (15), key (19), locating stud (20), the centrifugal free wheel device two-part of the ratchet that is constituted are formed, this device is located on oil extraction pump speed reducer input shaft cover (1) and the belt pulley (11), its principle is that ratchet when proper functioning (13) overcomes spring (6) pressure by centrifugal force effect separates with ratchet (9), and reaching does not have the wearing and tearing running; During shutdown; belt pulley (11) revolution reduces ratchet (13) under the effect of spring (6) elastic force; engage with ratchet (9); braking hub and band brake on the ratchet (9) play the counter-rotating braking action; the counter-rotating potential energy that driveshaft discharges passes to ratchet (9) by ratchet (13) and passes to the slight counter-rotating of break generation again, release portion potential energy, but because the braking action of break; preserve enough residual potential energy, driveshaft is not threaded off.
For structure of the present utility model and principle are had further understanding, as follows in conjunction with a specific embodiment enumeration of the present utility model:
Embodiment:
Accompanying drawing 2. be in the accompanying drawing 1 A-A to view.
Accompanying drawing 3. be in the accompanying drawing 1 B-B to view.
With reference to accompanying drawing, the centrifugal anti-reverse mechanism of ground surface driving screw rod oil extraction pump ratchet of the present utility model comprises clamping strap and the centrifugal free wheel device two-part composition of ratchet, what wherein break adopted is band brake, it comprises that the friction band (4) by outer field clamping strap (3) and internal layer is fixed into a braking belt by several rivets (26) with two bands, the two ends of belt clamp with clamping plate (21) (25), this end of clamping plate (21) is connected with pin sleeve (23), clamping plate (25) ends is connecting double-screw bolt (18), is fixed on the deceleration cover (1) by fixed plate (2) and bearing pin (24) being with spring (16) nut (17) spring stamen (22) on the double-screw bolt (18); Ratchet (9) in the centrifugal free wheel device of ratchet is sleeved on the input axle housing of deceleration body (15), the front end of ratchet (9) is with acting on by the ratchet of going up on fixing drive plate (12) pawl axis (14) at belt pulley (11) (13), the clamping strap of band brake partly is enclosed within on the braking hub of ratchet (9) rear end, precession nut (17) holddown spring (16) band brake is swung the braking hub on the tight ratchet (9), on pawl axis (14), be provided with spring (6) and ratchet (13), under the elastic force effect of spring (6), ratchet (13) is pressed to ratchet (9) under the effect of belt pulley (11) at motor, when forward is lower than the rotation of design revolution, lattice take place with ratchet (9) and reach and surmount operation sound in ratchet (13) under the effect of spring (6), when belt pulley forward revolution reaches the above rotating speed of design, the pressure that the centrifugal force that ratchet (13) produces overcomes spring (6) leaves ratchet (9), enters the nothing wearing and tearing and surmounts working state.When shutting down; the belt pulley forward is decelerated to zero; ratchet this moment (13) is pressed to ratchet (9) under the effect of spring (6); belt pulley (11) counter-rotating under driver inversion potential energy drives; the interior ratchet that promotes of groove that ratchet (13) is stuck in ratchet (9) reverses; ratchet (9) releases energy by the band brake on the braking hub, and keeps enough anti-reverse potential energy.Hexagon socket head cap screw among the figure (5), setting sleeve (7) is fixed on drive plate (12) on the belt pulley (11).Be provided with in order to moving moving spacing locating stud (20) of ratchet and the pawl axis of fixing with nut (8) (14) at drive plate (12), connecting by key (19) between Pulley shaft (10) and the belt pulley (11)., when the size of the belt pulley of speed reducer and drive plate is suitable mutually, also can cancels drive plate (12) in the structure pawl axis (14) directly is fixed on the belt pulley (11) according to the working environment on ground.
During work, belt pulley just changes, and ratchet surmounts band brake on ratchet inoperative.During the belt pulley counter-rotating, ratchet (13) is stuck in the groove of ratchet (9), and the braking hub of ratchet (9) is rotated, and band brake plays braking action.When also having only torque reaction to surpass the clamping strap friction torque that brake spring (16) causes, just can cause counter-rotating.When torque reaction during less than braking moment, will stop counter-rotating, keep driveshaft that certain potential energy is arranged, guarantee not thread off between driveshaft, but this potential energy can not be too big, if do not discharge driveshaft part potential energy by break, to cause greater impact power when starting next time, be unfavorable for motor starting.Therefore select to adjust the active force of spring (16) by nut (17) according to the running parameter of screw pump.Another effect of nut (17) is when the dismounting speed reducer, discharge driveshaft potential energy earlier, and promptly slow loose nut (17) allows belt pulley slightly reverse, and graduallyes relax control nut, releases driveshaft potential energy entirely, to guarantee safety.
Break in the centrifugal anti-reverse mechanism of ground surface driving screw rod oil extraction pump ratchet in the utility model except belt, also can adopt shoe type or disk type braker.
Characteristics of the present utility model are that this apparatus structure is simple, and easy for installation, cost is low, and is safe and reliable, do not have the wearing and tearing running, and long service life adopts this device can significantly reduce the engineering time and the required expense of ground surface driving screw rod oil extraction pump.
Claims (3)
1, the centrifugal anti-reverse mechanism of a kind of ground surface driving screw rod oil extraction pump ratchet, it is characterized in that it is made up of the centrifugal free wheel device of ratchet and break two-part, wherein break comprises the clamping strap that clamping strap (3) friction band (4) is connected together with rivet (26), the pin sleeve (23) that the clamping plate that the two ends of clamping strap are provided with (21) (25) clamping plate (21) end is connecting, the double-screw bolt (18) that clamping plate (25) end is connecting, what the spring (16) that is with on the double-screw bolt (18), nut (17) and spring stamen (22) constituted goes up fixing band brake with fixed plate (2) and bearing pin (24) at deceleration cover (1); The centrifugal free wheel device of its ratchet includes the ratchet (9) that is enclosed within on deceleration body (15) the input axle housing, belt pulley (11) is gone up by the fixing drive plate (12) of hexagon socket head cap screw (5) setting sleeve (7), and drive plate (12) is gone up the locating stud (20) that is provided with and is provided with pawl axis (14) Pulley shaft (10) of spring (6) ratchet (13) with the top that nut (8) is being fixed and constitutes with the lock (19) that is connected between the belt pulley (11).
2, the centrifugal anti-reverse mechanism of a kind of ground surface driving screw rod oil extraction pump ratchet according to claim 1 is characterized in that the pawl axis (14) in the centrifugal free wheel device of ratchet can directly be fixed on the belt pulley (10).
3, the centrifugal anti-reverse mechanism of a kind of ground surface driving screw rod oil extraction pump ratchet according to claim 1 is characterized in that part brake also can adopt shoe type or disk type braker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94225483 CN2199332Y (en) | 1994-03-11 | 1994-03-11 | Pawl-centrifugal return preventing device for ground driving screw oil extracting pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94225483 CN2199332Y (en) | 1994-03-11 | 1994-03-11 | Pawl-centrifugal return preventing device for ground driving screw oil extracting pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2199332Y true CN2199332Y (en) | 1995-05-31 |
Family
ID=33838666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94225483 Expired - Fee Related CN2199332Y (en) | 1994-03-11 | 1994-03-11 | Pawl-centrifugal return preventing device for ground driving screw oil extracting pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2199332Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102853011A (en) * | 2012-09-28 | 2013-01-02 | 北京世通华奥油田化学技术有限公司 | Braking device with sucker rod and speed changing box separating automatically after halt of screw oil pump |
| CN103939328A (en) * | 2014-04-28 | 2014-07-23 | 韩全伟 | Surface drive screw pump anti-reversion device |
| CN106681120A (en) * | 2015-11-09 | 2017-05-17 | 佳能株式会社 | Driving force transmission apparatus and image forming apparatus |
| CN109083840A (en) * | 2017-06-14 | 2018-12-25 | 河北庆林橡塑制品有限公司 | Ground driving screw pump is anti-reverse and reactive torque slow releaser |
| CN109268263A (en) * | 2018-11-29 | 2019-01-25 | 湖南机油泵股份有限公司 | A kind of oil pump that can prevent rotor from inverting |
-
1994
- 1994-03-11 CN CN 94225483 patent/CN2199332Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102853011A (en) * | 2012-09-28 | 2013-01-02 | 北京世通华奥油田化学技术有限公司 | Braking device with sucker rod and speed changing box separating automatically after halt of screw oil pump |
| CN103939328A (en) * | 2014-04-28 | 2014-07-23 | 韩全伟 | Surface drive screw pump anti-reversion device |
| CN103939328B (en) * | 2014-04-28 | 2015-12-30 | 韩全伟 | Ground driving screw pump anti-reverse mechanism |
| CN106681120A (en) * | 2015-11-09 | 2017-05-17 | 佳能株式会社 | Driving force transmission apparatus and image forming apparatus |
| CN109083840A (en) * | 2017-06-14 | 2018-12-25 | 河北庆林橡塑制品有限公司 | Ground driving screw pump is anti-reverse and reactive torque slow releaser |
| CN109268263A (en) * | 2018-11-29 | 2019-01-25 | 湖南机油泵股份有限公司 | A kind of oil pump that can prevent rotor from inverting |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |