CN203335395U - Inverse-rotation damping device - Google Patents
Inverse-rotation damping device Download PDFInfo
- Publication number
- CN203335395U CN203335395U CN2013204144370U CN201320414437U CN203335395U CN 203335395 U CN203335395 U CN 203335395U CN 2013204144370 U CN2013204144370 U CN 2013204144370U CN 201320414437 U CN201320414437 U CN 201320414437U CN 203335395 U CN203335395 U CN 203335395U
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- cam
- brake
- brake shoe
- brake shoes
- bolt
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Abstract
The utility model relates to oil industry equipment, in particular to an inverse-rotation damping device. According to the technical scheme, the inverse-rotation damping device comprises friction plates, bolts, springs, brake shoes, a cam, a square key, an output shaft and a brake drum, the two sets of brake shoes are connected together through the bolts, the springs are arranged on the bolts, the friction plates are attached to the exteriors of the brake shoes, the cam is installed inside grooves in the middles of the brake shoes, the interior of the cam is connected with the output shaft through the square key, the exterior of the cam is matched with the grooves in the brake shoes, and the friction plates, the brake shoes and the cam are all arranged in the brake drum. The inverse-rotation damping device has the advantages that the output shaft rotates inversely, the cam is driven to rotate, the cam rotates to enable the brake shoes to be opened in the radial direction, the friction plates are attached to the brake shoes, after the brake shoes are opened, the friction plates and the brake drum are in close contact and relatively slide, the damping brake force is generated, the inverse rotation energy is consumed until inverse rotation is stopped, and the potential safety hazards caused by instantaneous inverse rotation are avoided.
Description
Technical field
The utility model relates to a kind of petroleum industry equipment, particularly a kind of reversion damping device.
Background technique
The ground driving screw pump oil recovery technique is the crude oil Lifting Technique of current extensive use, and surface drive transfers a torque to subsurface progressive cavity by polished rod, sucker rod, and screw pump is lifted to ground by crude oil.Screw bolt well is being shut down or during holddown, the difference of liquid level that the moment of torsion stored due to sucker rod and oil pipe Crude Oil exist, and sucker rod can drive polished rod, drive unit high speed reverse rotation, causes that bar is de-, polished rod gets rid of curvedly, even threatens the problems such as operator safety.
Common anti-reverse mechanism has click anti-reverse mechanism, water brake dish anti-reverse mechanism at present.The click anti-reverse mechanism reverses moment at roofbolt, engagement by click, stop the roofbolt reversion, but the reverse torque potential energy stored in roofbolt is not discharged, if the staff now safeguards surface drive, roofbolt is acutely reversion likely, to the staff, brings potential safety hazard.Water brake dish anti-reverse mechanism reverses moment at roofbolt, and the fluid motor-driven brake pad pressing friction sheet carried in device produces braking force, in braking process, metal and metal friction, can produce Mars, simultaneously, the friction plate heating is serious, can bring disaster hidden-trouble.
Summary of the invention
The purpose of this utility model is exactly in view of the foregoing defects the prior art has, and a kind of reversion damping device is provided, and when drive unit reverses, the reversion damping device produces surface friction drag, consumes inversion energy, until reversion stops.This device reversion damping function is reliable, and Security is good.
Its technological scheme is: comprise friction plate, bolt, spring, brake shoe, cam, square key, output shaft and brake drum, two groups of brake shoes are bolted together, install spring on bolt, and friction plate is attached to the outside of brake shoe; Cam is installed in the groove at middle part of brake shoe, and the inside of cam is connected with output shaft by square key, and the outside groove interior with brake shoe matches; Described friction plate, brake shoe and cam all are placed in brake drum.
Above-mentioned bolt connects two groups of brake shoes, and the two ends cover of bolt has spring, and spring is compressed by plain cushion and the nut at bolt two ends.
Be processed with ungulate groove on above-mentioned brake shoe, cam when the surface drive forward and the ungulate engagement on brake shoe, drives the brake shoe forward; During the surface drive reversion, cam radially backs down brake shoe, impels the friction plate of brake shoe outside to contact with brake drum, produces frictional force.
The center of above-mentioned cam is provided with circular hole, and the circular hole edge is connected with output shaft by square key, and the outside of cam is provided with two juts, by jut, brake shoe is radially backed down.
The beneficial effects of the utility model are: when sucker rod reverses, drive the output shaft reversion of surface drive, cam is housed on output shaft, cam is connected by square key with output shaft.The output shaft reversion, the band moving cam rotates, and cam rotates and makes radially spreading of brake shoe, and on brake shoe, with friction plate, friction plate and brake drum close contact relative sliding after the brake shoe spreading, produce damping brake power, consumes inversion energy, until reversion stops; The potential safety hazard of having avoided instant reverse to bring.
The accompanying drawing explanation
Accompanying drawing 2 is the utility model schematic diagram in surface drive;
View when accompanying drawing 3 is the non-braking of the utility model;
Accompanying drawing 4 is the utility model view when braking;
In upper figure: friction plate 1, bolt 2, spring 3, brake shoe 4, cam 5, square key 6, nut 7, plain cushion 8, output shaft 9, brake drum 10, jut 11.
Embodiment
1-Fig. 4 by reference to the accompanying drawings, the utility model will be further described:
The utility model comprises that friction plate 1, bolt 2, spring 3, brake shoe 4, cam 5, square key 6, output shaft 9 and 10, two groups of brake shoes 4 of brake drum link together by bolt 2, installs spring 3 on bolt 2, and friction plate 1 is attached to the outside of brake shoe 4; Cam 5 is installed in the groove at middle part of brake shoe 4, and the inside of cam 5 is connected with output shaft 9 by square key 6, and the outside groove interior with brake shoe matches; Described friction plate 1, brake shoe 4 and cam 5 all are placed in brake drum 10.
Wherein, bolt 2 connects two groups of brake shoes 4, and the two ends cover of bolt 2 has spring 3, and spring 3 is compressed by plain cushion 8 and the nut 7 at bolt two ends.
Be processed with ungulate groove on above-mentioned brake shoe 4, cam 5 when the surface drive forward and the ungulate engagement on brake shoe, drives the brake shoe forward; During the surface drive reversion, cam 5 radially backs down brake shoe, impels the friction plate of brake shoe outside to contact with brake drum 10, produces frictional force.
In addition, the center of cam 5 is provided with circular hole, and the circular hole edge is connected with output shaft 9 by square key 6, and the outside of cam 5 is provided with two juts 11, by jut 11, brake shoe is radially backed down.
Referring to accompanying drawing 2 and Fig. 3, when the ground drive unit runs well, output shaft 9 band moving cams 5 turn clockwise, and brake shoe 4 is close to by the spring 3 backward central positions of squeezing action, and cam 5 drives brake shoe 4 and clockwise rotates.Now, between friction plate 1 and brake drum 10, there is gap, do not have frictional force.
Referring to accompanying drawing 2 and Fig. 4, when the ground drive unit is subject to roofbolt reversion strength, output shaft 9 band moving cam 5 reversions, the convex portion of cam 5 by brake shoe 4 to ejecting away from central direction, brake shoe 4 is spreading immediately, impels friction plate 1 to contact with brake drum 10, produces surface friction drag, consume inversion energy, until reversion stops.
Claims (4)
1. a reversion damping device, it is characterized in that: comprise friction plate (1), bolt (2), spring (3), brake shoe (4), cam (5), square key (6), output shaft (9) and brake drum (10), two groups of brake shoes (4) link together by bolt (2), install spring (3) on bolt (2), friction plate (1) is attached to the outside of brake shoe (4); Cam (5) is installed in the groove at middle part of brake shoe (4), and the inside of cam (5) is connected with output shaft (9) by square key (6), and the outside groove interior with brake shoe matches; Described friction plate (1), brake shoe (4) and cam (5) all are placed in brake drum (10).
2. reversion damping device according to claim 1, it is characterized in that: described bolt (2) connects two groups of brake shoes (4), and the two ends cover of bolt (2) has spring (3), and spring (3) is by plain cushion (8) and nut (7) compression at bolt two ends.
3. reversion damping device according to claim 1, it is characterized in that: described brake shoe is processed with ungulate groove on (4), and cam (5) when the surface drive forward and the ungulate engagement on brake shoe, drives the brake shoe forward; During the surface drive reversion, cam (5) radially backs down brake shoe, impels the friction plate of brake shoe outside to contact with brake drum (10), produces frictional force.
4. according to claim 1,2 or 3 described reversion damping devices, it is characterized in that: the center of described cam (5) is provided with circular hole, the circular hole edge is connected with output shaft (9) by square key (6), the outside of cam (5) is provided with two juts (11), by jut (11), brake shoe is radially backed down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204144370U CN203335395U (en) | 2013-07-12 | 2013-07-12 | Inverse-rotation damping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204144370U CN203335395U (en) | 2013-07-12 | 2013-07-12 | Inverse-rotation damping device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203335395U true CN203335395U (en) | 2013-12-11 |
Family
ID=49704072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013204144370U Expired - Lifetime CN203335395U (en) | 2013-07-12 | 2013-07-12 | Inverse-rotation damping device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203335395U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022257816A1 (en) * | 2021-06-11 | 2022-12-15 | 厦门松霖科技股份有限公司 | Mirror lifting/lowering structure, and mirror device |
-
2013
- 2013-07-12 CN CN2013204144370U patent/CN203335395U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022257816A1 (en) * | 2021-06-11 | 2022-12-15 | 厦门松霖科技股份有限公司 | Mirror lifting/lowering structure, and mirror device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 257091 Shandong city of Dongying province Dongying District Front Street No. 28 Patentee after: SHANDONG WEATHERFORD HIGHLAND ARTIFICIAL LIFTING EQUIPMENT CO.,LTD. Address before: 257091 Shandong Province, Dongying City Economic Development District Front Street No. 28 Patentee before: DONGYING SHENGLI HIGHLAND Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131211 |
|
| CX01 | Expiry of patent term |