CN101749343A - Electromagnetic drum brake for oil sucking machine - Google Patents
Electromagnetic drum brake for oil sucking machine Download PDFInfo
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- CN101749343A CN101749343A CN200810051513A CN200810051513A CN101749343A CN 101749343 A CN101749343 A CN 101749343A CN 200810051513 A CN200810051513 A CN 200810051513A CN 200810051513 A CN200810051513 A CN 200810051513A CN 101749343 A CN101749343 A CN 101749343A
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- brake
- cam
- electromagnetism
- drum
- braking
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Abstract
The invention relates to an electromagnetic drum brake for an oil sucking machine, in particular to a brake apparatus capable of automatically braking when the oil sucking machine stops. In the invention, an electromagnetic cam, a camshaft, a return spring, an electric cabinet, and the like are additionally arranged in an internal expanding brake mechanism of the prior art; exposed parts, such as a brake handle, a brake handle seat, a horizontal pull rod, a vertical pull rod, an angle seat, a rocking arm, and the like in the prior art are cancelled; the added parts and the retained parts in the internal expanding brake mechanism of the prior art are completely installed in a brake drum, and the electromagnetic drum brake is an integral mechanical and electronic device. The braking process and the starting process are carried out automatically. In the work principle of the invention, the self automatic braking is realized through the additionally arranged electromagnetic mechanism that consumes little electrical energy by using the inertia force when the oil sucking machine stops. In the invention, a safe lock after braking is arranged, and the safe and reliable braking can be ensured when an electric network suddenly cuts the power.
Description
Technical field
Patent of the present invention relates to a kind of pumping unit braking device that is used for petroleum production, especially can be when shutdown of pumping machine the device of Braking mode.
Background technique
At present, the pumping unit braking device that use in the oil field substantially all is to adopt ancient manpower hand brake mechanism, and two kinds of citation forms are arranged: a kind of is external-contacting brake, and a kind of is inner expanding brake.Their basic structure all is made up of brake drum (wheel) 6, brake shoe 3, cam 10, rocking arm 1, eccentric shaft 2, brake lever 19, brake lever seat 20, collar 21, vertical pull bar 22, drag link bearing 23, brake-shoe return spring 12 etc.In brake drum 6, be symmetrically installed with two brake shoes 3, their end respectively with two eccentric shaft 2 hinges, be provided with cam 10 between the other end of two brake shoes 3, the axle of cam 10 is connected with an end of rocking arm 1, is connected with brake-shoe return spring 12 between two brake shoes 3.Eccentric shaft 2 and cam 10 the axle all be connected one with brake drum 6 coaxial mounted bearing caps on.The other end of rocking arm 1 is connected with vertical pull bar 22, drag link bearing 23, collar 21, brake lever seat 20 and brake lever 19 in turn.During braking, close the pumping unit electrical source of power, pull brake lever 19 by manpower then, by collar 21, vertical pull bar 22, rocking arm 1, drive cam 10 and turn an angle, cam 10 makes two brake shoes, 3 mutual distendings, and swelling and reach the purpose (referring to Fig. 5) of braking between the brake drum 6.Its shortcoming is: need manual operation, operator's labor intensity is big, and the personal factor influence is big, and there is potential safety hazard in inconvenient operation, and reliability is relatively poor; Complex structure, parts expose easily to be lost, and breaks down easily.
Summary of the invention
The purpose of patent of the present invention provides a kind of electromagnetic drum brake for oil sucking machine, and the manual operation labor intensity that exists with the solution prior art is big, and the personal factor influence is big, and there is potential safety hazard in inconvenient operation, and reliability is relatively poor; Complex structure, parts expose, and break down easily and the exposed part problem of losing.
Patent of the present invention solves the technological scheme that its technical problem takes: be symmetrically installed with two brake shoes in brake drum, their end respectively with two eccentric shaft hinges, between the other end of two brake shoes, be provided with camshaft, between two brake shoes, be connected with brake-shoe return spring, it is characterized in that: an electromagnetism cam is rotationally connected in the axle sleeve outside of described brake drum inside, between this electromagnetism cam and brake drum bottom surface, concentrating flux plate is housed, between this electromagnetism cam and described brake shoe, is connected with two electromagnetism cam returning springs; The protruding end of described rocking arm matches with the groove of electromagnetism cam, is used for transmitting braking force.
Also comprise braking back safety lock, this safety lock comprises circumferential a plurality of recesses of the wheel acies that is located at described brake drum, on this recess side telescopic rod bolt is housed, and the one end is corresponding to described recess, and integral installation is on a fixed bearing.On fixed bearing, be provided with one and be used for controlling the A.C. contactor of motor near switch.The rod bolt of braking back safety lock moves by manual operation to be finished.
The coil of described electromagnetism cam is connected with an electric control box by the lead that water pipe precaution is arranged.
Inertial force behind the patent utilization shutdown of pumping machine of the present invention by the adhesive of electromagnetic mechanism, is stirred camshaft, consumes very little electric energy and realizes self Braking mode.Adopt automatically controlled mode that the action of arrestment mechanism is controlled, realized that pumping unit starts the automatic control of operation, skidding.It is a kind of automatic controller of electromechanical integration.
The beneficial effect of patent of the present invention is: can pass through electric control operation, braking, startup overall process are carried out automatically, and be safe and reliable, alleviated working strength of workers greatly; Simple in structure, no exposed parts has theftproof performance preferably; Power consumption is very little, the about 50W of power consumption during braking, but continuous operation, and electric controller cuts off the power supply no longer power consumption automatically during the pumping unit operation.
Below in conjunction with drawings and Examples patent of the present invention is described further.
Description of drawings
Fig. 1 is an embodiment's of a patent of the present invention structural front view (removing the B-B sectional view after Fig. 2 middle (center) bearing covers);
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is the example structure schematic representation that patent of the present invention has safety lock;
Fig. 4 is the electric control theory figure of patent of the present invention;
Fig. 5 is the prior art constructions schematic representation.
Description of reference numerals: 1. rocking arm, 2. eccentric shaft, 3. brake shoe, 4. electromagnetism cam returning spring, 5. concentrating flux plate, 6. brake drum, 61. the brake drum recess, 7. electromagnetism cam, the groove on the 71. electromagnetism cams, 8. bearing, 9. bearing cap, 10. cam, 11. camshaft, 12. brake-shoe return springs, 13. electric control boxs, 14. the lead steel pipe, 15. near switch, 16. fixing bolts, 17. fixed bearing, 18. rod bolts, 19. brake levers, 20. the brake lever seat, 21. collars, 22. vertical pull bars, 23. drag link bearing, 24. guider screws, 25. return springs, 26. the return plate, 27. axle sleeves, 28. circlips.
Embodiment
Referring to Fig. 1 and Fig. 2, this embodiment's of patent of the present invention structure is: rocking arm 1 is connected and fixed by key with camshaft 11 or is structure as a whole, and camshaft 11 is hinged on the bearing cap 9, and is rotatable.The upper end of two brake shoes 3 is rotatably installed in respectively on two eccentric shafts 2, and the eccentric position of adjustment eccentric shaft 2 can be adjusted the gap between brake shoe 3 and the brake drum 6.Bearing cap 9 is by being bolted on the reduction case (not shown).Electromagnetism cam 7 is installed in by bearing 8 on the axle sleeve 27 of bearing cap 9 central authorities, and is rotatable.Axle sleeve 27 plays the effect of supporting electromagnetism cam 7, in the end of axle sleeve 27 circlip 28 is installed, and it makes electromagnetism cam 7 and concentrating flux plate 5 keep certain clearance during the pumping unit operation.Two electromagnetism cam returning springs 4 hang between electromagnetism cam 7 both sides and two brake shoes.Concentrating flux plate 5 is fixing by bolt and brake drum 6.Brake drum 6 is fixed on the driving shaft of retarder.Brake shoe return spring 12 hangs between two brake shoes 3.Be provided with cam 10, camshaft 11 and rocking arm 1 between the lower end of two brake shoes 3, they connect as one structure.Match with the groove 71 of electromagnetism cam 7 in the protruding end of this rocking arm 1.Return plate 26 is connected with electromagnetism cam 7 by guider screw 24, and return spring 25 is sleeved on the guider screw 24.The coil of described electromagnetism cam 7 is connected with an electric control box 13 by the lead 14 (referring to Fig. 3) that water pipe precaution is arranged.
Fig. 4 is an electric control circuit schematic diagram of patent of the present invention, comprising: three-phase contactor K switch M1 that connects on the power loop of total power switch K, motor M and thermorelay FR1, and main control loop A, braking warning circuit B and brake control circuit C.Main control loop A is parallel with a contactor normally open contact KM2 by stop button SB1, start button SB2, thermorelay FR2, contactor coil KM and the normal open position limit switch LX of series connection successively at start button SB2 two ends; Braking warning circuit B is coupled to each other by the coil YB in K switch 2,24V direct-current switch power supply VD, the electromagnetism cam 7, braking tutorial light VH and current-limiting resistance R thereof; Brake control circuit C is by the normal open contact KM3 series connection of button SB3 and contactor.The coil YB of this control gear in electromagnetism cam 7, all the other all are installed in the electric control box 13.The coil YB of electromagnetism cam 7 is connected to 19,23 points of electric control box 13 the insides by the lead that passes in the steel pipe.
The working principle of the foregoing description is (with reference to figure 1, Fig. 2 and Fig. 4): when needing braking, earlier with the K2 closure, the normally closed auxiliary contact control energising of electromagnetic coil YB A.C. contactor in main control loop A that the electromagnetism cam is 7 li, produce electromagnetic force, electromagnetism cam 7 and brake drum 6 are pulled together by concentrating flux plate 5.The inertial force that remains in operation after the shutdown passes to electromagnetism cam 7, and the groove 71 of electromagnetism cam 7 is stirred the protruding end of rocking arm 1, makes camshaft 11 rotate distending brake shoe 3, and brake shoe 3 swelling brake drums 6 produce braking force and brake.Whole braking process carries out automatically.Adjust resting position if desired, can press inching button SB3 and realize.The effect of inching button SB3 is the break-make of 7 li electromagnetic coil power supplys of control electromagnetism cam.
Pumping unit is switched on when starting once more, control (control procedure being described) by main control loop A in conjunction with Fig. 4, make 7 outages of electromagnetism cam, electromagnetism cam 7 breaks away from brake drum 6 under the effect of return spring 25, and electromagnetism cam 7 resets under the effect of electromagnetism cam returning spring 4 simultaneously.Brake shoe 3 resets under the effect of brake-shoe return spring 12, and braking state is removed, and pumping-unit motor M starts running.Whole brake off process is also carried out automatically.
For avoiding machinery and electric control element to move the adverse consequences of asynchronous generation, can before starting pumping unit, close the power switch K2 in the electric control box or pin inching button SB3 and solve.
Guarantee the safety of operation when preventing that electrical network from having a power failure suddenly, patent of the present invention also is provided with braking back safety lock (referring to Fig. 3), this safety lock comprises circumferential a plurality of recesses 61 of the wheel acies that is located at described brake drum 6, on these recess 61 sides telescopic rod bolt is housed, the one end is corresponding to described recess, and integral installation is on a fixed bearing.On fixed bearing, be provided with one and be used for controlling the A.C. contactor of motor near switch.
Patent of the present invention has been set up electromagnetism cam 7, bearing 8, Returnning spring 4, axle sleeve 27, circlip 28, braking back safety lock, electric control box 13 (also can set up electric control element in original distribution box) etc. in original technology internal-expansion type braking mechanism.Exposed parts such as brake lever 19 among original technology Fig. 5, brake lever seat 20, collar 21, vertical pull bar 22, draw-bar seat 23, rocking arm have been cancelled.The part that keeps in added parts and the original technology internal-expansion type arrestment mechanism all is installed in the brake drum, does not have exposed part, is a kind of electromechanical integrated device.
Claims (3)
1. electromagnetic drum brake for oil sucking machine, in brake drum, be symmetrically installed with two brake shoes, their end respectively with an eccentric shaft hinge, between the other end of two brake shoes, be provided with camshaft, between two brake shoes, be connected with brake-shoe return spring; Described camshaft be connected one with the coaxial mounted bearing cap of brake drum on, it is characterized in that: an electromagnetism cam is rotationally connected in the axle sleeve outside of described brake drum inside, between this electromagnetism cam and brake drum bottom surface, concentrating flux plate is housed, between this electromagnetism cam and described bearing cap, is connected with the electromagnetism cam returning spring; The groove of the protruding end of described camshaft and electromagnetism cam cooperatively interacts.
2. electromagnetic drum brake for oil sucking machine according to claim 1, it is characterized in that: also comprise braking back safety lock, this safety lock comprises circumferential a plurality of recesses of the wheel acies that is located at described brake drum, on this recess side telescopic rod bolt is housed, the one end is corresponding to described recess, and integral installation is on a fixed bearing; The displacement of rod bolt control one is near switch, near the A.C. contactor of switch control motor, make rod bolt enter recess after, motor can not start.
3. electromagnetic drum brake for oil sucking machine according to claim 1 and 2 is characterized in that: the coil of described electromagnetism cam is connected with an electric control box by the lead that water pipe precaution is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810051513A CN101749343A (en) | 2008-12-02 | 2008-12-02 | Electromagnetic drum brake for oil sucking machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810051513A CN101749343A (en) | 2008-12-02 | 2008-12-02 | Electromagnetic drum brake for oil sucking machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101749343A true CN101749343A (en) | 2010-06-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810051513A Pending CN101749343A (en) | 2008-12-02 | 2008-12-02 | Electromagnetic drum brake for oil sucking machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101749343A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109469690A (en) * | 2018-11-07 | 2019-03-15 | 洛阳智能农业装备研究院有限公司 | A kind of automatic driving vehicle electric control braking component |
| CN114194275A (en) * | 2021-12-09 | 2022-03-18 | 河北汉光重工有限责任公司 | Cam brake device for container plate trailer |
-
2008
- 2008-12-02 CN CN200810051513A patent/CN101749343A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109469690A (en) * | 2018-11-07 | 2019-03-15 | 洛阳智能农业装备研究院有限公司 | A kind of automatic driving vehicle electric control braking component |
| CN114194275A (en) * | 2021-12-09 | 2022-03-18 | 河北汉光重工有限责任公司 | Cam brake device for container plate trailer |
| CN114194275B (en) * | 2021-12-09 | 2024-06-14 | 河北汉光重工有限责任公司 | Cam brake device of pallet trailer |
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Addressee: Zhang Zhongxing Document name: Notification of before Expiration of Request of Examination as to Substance |
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| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100623 |