CN106395661B - A kind of one-touch shifting system of well drilling hoist and method - Google Patents
A kind of one-touch shifting system of well drilling hoist and method Download PDFInfo
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- CN106395661B CN106395661B CN201610985676.XA CN201610985676A CN106395661B CN 106395661 B CN106395661 B CN 106395661B CN 201610985676 A CN201610985676 A CN 201610985676A CN 106395661 B CN106395661 B CN 106395661B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/28—Other constructional details
- B66D1/40—Control devices
- B66D1/48—Control devices automatic
- B66D1/485—Control devices automatic electrical
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/54—Safety gear
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanical Control Devices (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a kind of one-touch shifting systems of well drilling hoist, including PLC controller, PLC controller with five solenoid valves in electromagnetism valve island case is controlled and is connect respectively, five solenoid valves are automatically controlled two position switching valve of gas, input terminal is connect respectively with air source, and wherein solenoid valve Y1 output terminals are connect with the air cavity of backset cylinder；Solenoid valve Y2 output terminals are connect with the rod cavity of backset cylinder；Solenoid valve Y3 output terminals are connected with the right chamber of shifting cylinder；Solenoid valve Y4 output terminals are connected with the lumen of shifting cylinder；Solenoid valve Y5 output terminals are connected with the left chamber of shifting cylinder；The piston rod end of backset cylinder and the piston rod vertical articulation of shifting cylinder, the piston rod of shifting cylinder are fixedly connected with gearshift, and gearshift is arranged between reduction box and the drum shaft of winch drum.The invention also discloses a kind of one-touch process for gear of well drilling hoist, improve drillng operation efficiency and the automatization level of winch control.
Description
Technical field
The invention belongs to technical field of petroleum machinery, are related to a kind of one-touch shifting system of well drilling hoist, also relate to one
The kind one-touch process for gear of well drilling hoist.
Background technology
Petroleum drilling winch gearshift at present generally carries out Pneumatic shift using manual shift or operation cylinder.Manual shift
Labor intensity is big and operating difficulties, working efficiency are low, it is impossible to realize remote control；Pneumatic shift is generally by Pneumatic valve and cylinder
It manipulates gearshift and completes gearshift, but success rate of shifting gears is low, it is often necessary to which operating personnel intervene manually, and are susceptible to event
Serious drilling failure caused by barrier or even generation gear void are hung.
Invention content
The object of the present invention is to provide a kind of one-touch shifting systems of well drilling hoist, solve oil-well rig of the prior art
The problem of winch manual shift difficulty is big, efficiency is low, and the degree of automation is low, and drillng operation efficiency is low.
It is a further object of the present invention to provide a kind of one-touch process for gear of well drilling hoist, have fully phased out manual intervention,
So that gearshift is more intelligent, ensure the success rate and reliability of gearshift.
The technical solution adopted in the present invention is a kind of one-touch shifting system of well drilling hoist, including PLC controller, PLC
Controller with five solenoid valves in electromagnetism valve island case is controlled and is connect respectively, which is automatically controlled two commutations of gas
Valve, input terminal are connect respectively with air source, and wherein solenoid valve Y1 output terminals are connect with the air cavity of backset cylinder；Solenoid valve Y2 output terminals
It is connect with the rod cavity of backset cylinder；Solenoid valve Y3 output terminals are connected with the right chamber of shifting cylinder；Solenoid valve Y4 output terminals and gearshift
The lumen connection of cylinder；Solenoid valve Y5 output terminals are connected with the left chamber of shifting cylinder；
The piston rod end of backset cylinder and the piston rod vertical articulation of shifting cylinder, the piston rod of shifting cylinder and gearshift
Mechanism is fixedly connected, and gearshift is arranged between reduction box and the drum shaft of winch drum.
Another technical solution adopted in the present invention is that a kind of one-touch process for gear of well drilling hoist, dependent on above-mentioned
The one-touch shifting system of well drilling hoist, implement according to following steps：
A) disc brake emergency stop switch is pressed, winch motor is shut down so that disc brake checks the drum shaft of winch drum；
B) the gear D buttons needed replacing are clicked on the touchscreen, and setting D is top gear in following steps, then D ' is low
Fast shelves；PLC controller judges that disc brake is successfully braked and winch motor has been shut down, then performs step c)；
If not braking or not shutting down, the gear D Button Colors on touch screen become red, while brake
The word alarm of failure is prompted driller personnel to brake and is shut down；
C) the gear D Button Colors after PLC controller detection is qualified on touch screen become blue, and expression is carrying out gearshift journey
Sequence；Step d) is continued to execute after Program time delay T time；
D) PLC controller controls corresponding solenoid valve operation lock gear air cylinder unlock, and PLC controller detects lock in T time
The feedback signal of shelves sensor, if still there is signal, touch screen shows backset failure, prompts to overhaul, the shelves on touch screen
Position D Button Colors become red, and program return starts；Step e) is performed if without signal；
E) PLC controller controls corresponding solenoid valve operation shifting cylinder to fall back on neutral gear, and PLC controller detects in T time
The sensor feedback signal of top gear sensor and low or first gear sensor, D grades of acquisition and D ' shelves, if top gear sensor and low
One or two in fast shelves sensor still have signal feedback, then touch screen shows D grades or D ' shelves failures, prompt inspection
It repaiies, the gear D Button Colors on touch screen become red, and program return starts；Step f) is performed if without signal；
F) PLC controller control solenoid valve operation lock gear air cylinder padlock, PLC controller detect backset sensing in T time
The feedback signal of device, if without signal, touch screen shows backset failure, prompts to overhaul, the gear D button face on touch screen
Discoloration starts into red, program return；If there is signal then performs step g)；
G) PLC controller control solenoid valve operation lock gear air cylinder unlocks again, and PLC controller detects backset in T time
The signal of sensor, if still there is signal, touch screen shows backset failure, prompts to overhaul, the gear D buttons on touch screen
Color becomes red, and program return starts；Step h) is performed if without signal；
H) PLC controller control solenoid valve operation shifting cylinder is suspended to D grades, and PLC controller detects height simultaneously in T time
The sensor signal of fast shelves sensor and low or first gear sensor, D grades of acquisition and D ' shelves, if D grades of no signals or D ' shelves have letter
Number, then touch screen shows that extension shelves are unsuccessful, and program starts micro- pendulum pattern and is transferred to step j)；If D grades have signal and D ' shelves nothings
Signal then performs step i)；
I) PLC controller control solenoid valve operation lock gear air cylinder padlock, PLC controller detect backset sensing in T time
The feedback signal of device, if without signal, touch screen shows that backset is unsuccessful, and program starts micro- pendulum pattern and is transferred to step j)；Such as
Fruit has signal then to show that gear D buttons are shifted gears successfully for green color expression on the touchscreen, and EP (end of program), gearshift is completed；
J) micro- pendulum pattern：PLC controller starts winch motor by Bypass Control and keeps zero-speed, PLC controller control
Winch motor band driven input shaft fine motion rotation, while shifting cylinder continues to execute extension shelves；PLC controller detects all sensings in real time
The signal of device if D grades of feedback-less or D ' shelves have feedback, continues cycling through and performs micro- pendulum；If D grades have feedback and D ' shelves nothings
Feedback, then illustrate that gear has been hung up, and further starts backset cylinder and locks gear, detection backset sensor has feedback then touching
Screen display gear D buttons are shifted gears successfully for green color expression, and EP (end of program), gearshift are completed；Micro- pendulum has been circularly set timing work(
Can, it is lockked if actual cycle time T is more than preset time t ' there are no shelves are hung, micro- pendulum failure, the gear D on touch screen
Button Color becomes red, and program return starts.
The invention has the advantages that including the following：
1) using PLC program instruct control solenoid-driven shifting cylinder, cylinder drive gearshift realize winch from
Move gear.It is controlled by touch screen and operates simpler, hommization.
2) each gear is equipped with sensor, feeds back to form closed-loop control by signal, the execution of real-time judge gearshift program
Situation and guides program to run, and is easy to fix a breakdown by program feedback, and control system is more succinct, it is simple to safeguard.
3) when occur gearbox gear dislocation cause gear that can not hang conjunction when, PLC controller enable automatically it is micro- pendulum hang shelves journey
Sequence, micro- rotary electric machine is realized automatically to shelves, is substantially increased the success rate of gearshift, is reduced human intervention when hanging shelves, reduces
Labor intensity, operation are more intelligent.
Description of the drawings
Fig. 1 is the structure and schematic diagram of apparatus of the present invention；
Fig. 2 is the control flow schematic diagram of the method for the present invention.
In figure, 1.PLC controllers, 2. electromagnetism valve island casees, 3. shifting cylinders, 4. backset cylinders, 5. top gear sensors, 6.
Low or first gear sensor, 7. backset sensors, 8. gearshifts, 9. touch screens, 10. reduction boxes, 11. winch drums.
Specific embodiment
The present invention is described in detail with reference to the accompanying drawings and detailed description.
With reference to Fig. 1, the structure of apparatus of the present invention is, including PLC controller 1, in PLC controller 1 and electromagnetism valve island case 2
Five solenoid valves (Y1, Y2, Y3, Y4 and Y5 in Fig. 1) control connection respectively, which is automatically controlled two commutations of gas
Valve, input terminal are connect respectively with air source, and wherein solenoid valve Y1 output terminals are connect with the air cavity of backset cylinder 4, for exporting backset
Release control gas；Solenoid valve Y2 output terminals are connect with the rod cavity of backset cylinder 4, for exporting backset control gas；Solenoid valve Y3 is defeated
Outlet is connected with the right chamber of shifting cylinder 3, for exporting top gear control gas；In solenoid valve Y4 output terminals and shifting cylinder 3
Chamber connects, for exporting neutral gear control gas；Solenoid valve Y5 output terminals are connected with the left chamber of shifting cylinder 3, for exporting low or first gear
Control gas；
The piston rod end of backset cylinder 4 and the piston rod vertical articulation of shifting cylinder 3, the piston rod of shifting cylinder 3 with
Gearshift 8 is fixedly connected and (is directly realized by transmission or driving), and gearshift 8 is arranged on the rolling of reduction box 10 and winch drum 11
Between cylinder axis, shelves are hung for clutch between the two；Reduction box 10 is set using bi-motor, and motor M1 and motor M2 are as needed
It works at the same time or backups each other；
Shifting cylinder 3 is three cylinders, and backset cylinder 4 is two cylinders；Backset is provided on the piston rod of backset cylinder 4
Sensor 7, is provided with top gear sensor 5 and low or first gear sensor 6 on the piston rod of shifting cylinder 3, top gear sensor 5,
Low or first gear sensor 6, backset sensor 7 signal output end take back PLC controller 1, PLC controller 1 is connected with touch screen 9,
Touch screen 9 is provided with the characters information display functions such as gear shift operation button and state and failure, and the color of button is according to work shape
State difference is servo-actuated variation.
PLC controller 1 connects and controls electromagnetism valve island case 2, and electromagnetism valve island case 2 manipulates shifting cylinder 3 and backset gas respectively
Cylinder 4；Shifting cylinder 3 pushes gearshift 8 to perform gearshift by connecting rod；Piston rod (being equivalent to lever) on backset cylinder 4 can
To perform locking to the gear of shifting cylinder 3 lock stroke and release；Top gear sensor 5, low or first gear sensor 6, backset sensing
Device 7 is separately mounted on the gear point of shifting cylinder 3 and backset cylinder 4, is obtained by the piston rod mark point touch of cylinder
The location information of cylinder, real-time delivery gear signal is to PLC controller 1；Touch screen 9 is connected with PLC controller 1, and transmission is changed
Gear action command simultaneously shows gearshift situation.
The operation principle of apparatus of the present invention is,
PLC controller 1 is shifted gears by the way that the break-make of five solenoid valves is controlled to be acted to operate shifting cylinder 3 and backset cylinder 4
Cylinder 3 pushes gearshift 8 to realize that winch gear is replaced, while the range state of each sensor feedback is shown in by connecting rod
On touch screen 9.PLC controller 1 has preset the program of winch self shifter, as long as driller clicks gear shift knobs on touch screen 9,
PLC controller 1 can be automatically performed gear shift operation.
Citing, when driller is when clicking shift from fast to slow on touch screen 9, PLC controller 1 detects each sensing
Device signal normally controls the corresponding electromagnetism valve events in electromagnetism valve island case 2 afterwards, and operation lock gear air cylinder 4 is unlocked, is delayed after the several seconds
Shifting cylinder 3 is shifted to low-speed position, and gearshift 8 pushes 10 shift to low gear of reduction box again.In shift process, PLC controls
Device 1 processed detects the signal feedback of all the sensors, is compared with preset program, it is ensured that each cylinder and the action of gearshift 8 are arrived
Position, is sequentially output instruction, is gradually completing winch gearshift.
On touch screen 9 light setting and flashing state be, the touch button on touch screen 9 can with design colours attribute,
Button can realize three kinds of color changes of red, green, blue.Green is shown when gear is in use, when gear is just in replacement process
It is displayed in blue when middle, breaks down in shift process, be displayed in red.
With reference to Fig. 2, the one-touch process for gear of the present invention is implemented according to following steps：
A) disc brake emergency stop switch is pressed, winch motor is shut down so that disc brake checks the drum shaft of winch drum 11, that is, exists
Disc brake brake must be first operated before gearshift, and stops motor operating；
B) the gear D buttons needed replacing are clicked on touch screen 9, it is top gear to set D herein, then D ' is low or first gear,
Vice versa；
PLC controller 1 judges that disc brake is successfully braked and winch motor has been shut down, then performs step c)；
If not braking or not shutting down, the gear D Button Colors on touch screen 9 become red, while stop
The word alarm of vehicle failure is prompted driller personnel to brake and is shut down；
C) the gear D Button Colors that PLC controller 1 is detected after qualification on touch screen 9 become blue, and expression is carrying out shifting gears
Program；Step d) is continued to execute after Program time delay T time (T is delay time, is set as 1-5 seconds as needed, similarly hereinafter)；
D) PLC controller 1 controls corresponding solenoid valve operation lock gear air cylinder 4 to unlock, and PLC controller 1 detects in T time
The feedback signal of backset sensor 7, if still there is signal, touch screen 9 shows backset failure, prompts to overhaul, on touch screen
Gear D Button Colors become red, program return starts；Step e) is performed if without signal；
E) PLC controller 1 controls corresponding solenoid valve operation shifting cylinder 3 to fall back on neutral gear, and PLC controller 1 is examined in T time
The sensor feedback signal of top gear sensor 5 and low or first gear sensor 6, D grades of acquisition and D ' shelves is surveyed, if top gear sensor
5 and low or first gear sensor 6 in one or two still have signal feedback, then touch screen 9 show D grades or D ' shelves failures,
Prompting is overhauled, and the gear D Button Colors on touch screen 9 become red, and program return starts；Step is performed if without signal
f)；
F) PLC controller 1 controls 4 padlock of solenoid valve operation lock gear air cylinder, and PLC controller 1 detects backset biography in T time
The feedback signal of sensor 7, if without signal, touch screen 9 shows backset failure, prompts to overhaul, the gear D on touch screen 9
Button Color becomes red, and program return starts；If there is signal then performs step g)；
G) PLC controller 1 controls solenoid valve operation lock gear air cylinder 4 to unlock again, and PLC controller 1 detects lock in T time
The signal of shelves sensor 7, if still there is signal, touch screen 9 shows backset failure, prompts to overhaul, the gear on touch screen 9
D Button Colors become red, and program return starts；Step h) is performed if without signal；
H) PLC controller 1 controls solenoid valve operation shifting cylinder 3 to be suspended to D grades, and PLC controller 1 is examined simultaneously in T time
The sensor signal of top gear sensor 5 and low or first gear sensor 6, D grades of acquisition and D ' shelves is surveyed, if D grades of no signals or D '
Shelves have signal, then touch screen 9 shows that extension shelves are unsuccessful, and program starts micro- pendulum pattern and is transferred to step j)；If D grades have signal and
D ' shelves no signals, then perform step i)；
I) PLC controller 1 controls 4 padlock of solenoid valve operation lock gear air cylinder, and PLC controller 1 detects backset biography in T time
The feedback signal of sensor 7, if without signal, touch screen 9 shows that backset is unsuccessful, and program starts micro- pendulum pattern and is transferred to step
j)；If there is signal then shows that gear D buttons are shifted gears successfully for green color expression on touch screen 9, EP (end of program) has been shifted gears
Into；
J) micro- pendulum pattern：PLC controller 1 starts winch motor by Bypass Control and keeps zero-speed, and PLC controller 1 is controlled
Winch motor band driven input shaft fine motion rotation processed, while shifting cylinder 3 continues to execute extension shelves；Detection is all in real time for PLC controller 1
The signal of sensor if D grades of feedback-less or D ' shelves have feedback, continues cycling through and performs micro- pendulum；If D grades have feedback and D '
Shelves feedback-less, then illustrate that gear has been hung up, and further starts backset cylinder 4 and locks gear, detection backset sensor 7 has feedback then
Show that gear D buttons are shifted gears successfully for green color expression on touch screen 9, EP (end of program), gearshift are completed；Micro- pendulum has been circularly set
Clocking capability locks if actual cycle time T is more than preset time t ' there are no shelves are hung, micro- pendulum failure, on touch screen 9
Gear D Button Colors become red, program return starts.
Claims (1)
1. a kind of one-touch process for gear of well drilling hoist dependent on a kind of one-touch shifting system of well drilling hoist, is controlled including PLC
Device (1), PLC controller (1) with five solenoid valves in electromagnetism valve island case (2) are controlled and are connect respectively, which is
Automatically controlled two position switching valve of gas, input terminal are connect respectively with air source, and wherein solenoid valve Y1 output terminals and the air cavity of backset cylinder (4) connects
It connects；Solenoid valve Y2 output terminals are connect with the rod cavity of backset cylinder (4)；Solenoid valve Y3 output terminals and the right chamber of shifting cylinder (3) connect
It is logical；Solenoid valve Y4 output terminals are connected with the lumen of shifting cylinder (3)；Solenoid valve Y5 output terminals and the left chamber of shifting cylinder (3) connect
It is logical；The piston rod end of backset cylinder (4) and the piston rod vertical articulation of shifting cylinder (3), the piston rod of shifting cylinder (3) with
Gearshift (8) is fixedly connected, and gearshift (8) is arranged between the drum shaft of reduction box (10) and winch drum (11)；
The reduction box (10) is set using bi-motor, and motor M1 and motor M2 are worked at the same time or backuped each other as needed；
The shifting cylinder (3) is three cylinders, and backset cylinder (4) is two cylinders；It is set on the piston rod of backset cylinder (4)
Backset sensor (7) is equipped with, top gear sensor (5) and low or first gear sensor are provided on the piston rod of shifting cylinder (3)
(6), top gear sensor (5), low or first gear sensor (6), backset sensor (7) signal output end take back PLC controller
(1), PLC controller (1) is connected with touch screen (9),
It is characterized in that, this method is implemented according to following steps：
A) disc brake emergency stop switch is pressed, winch motor is shut down so that disc brake checks the drum shaft of winch drum (11)；
B) the gear D buttons needed replacing are clicked on touch screen (9), setting D is top gear in following steps, then D ' is low speed
Shelves；PLC controller (1) judges that disc brake is successfully braked and winch motor has been shut down, then performs step c)；
If not braking or not shutting down, the gear D Button Colors on touch screen (9) become red, while brake
The word alarm of failure is prompted driller personnel to brake and is shut down；
C) the gear D Button Colors after PLC controller (1) detection is qualified on touch screen (9) become blue, and expression is carrying out shifting gears
Program；Step d) is continued to execute after Program time delay T time；
D) PLC controller (1) controls corresponding solenoid valve operation lock gear air cylinder (4) unlock, and PLC controller (1) is examined in T time
The feedback signal of backset sensor (7) is surveyed, if still there is signal, touch screen (9) shows backset failure, prompts maintenance, touches
It touches the gear D Button Colors on screen and becomes red, program return starts；Step e) is performed if without signal；
E) PLC controller (1) controls corresponding solenoid valve operation shifting cylinder (3) to fall back on neutral gear, and PLC controller (1) is in T time
The sensor feedback signal of top gear sensor (5) and low or first gear sensor (6), D grades of acquisition and D ' shelves is detected, if top gear
One or two in sensor (5) and low or first gear sensor (6) still have signal feedback, then touch screen (9) show D grades or
Person's D ' shelves failures are prompted to overhaul, and the gear D Button Colors on touch screen (9) become red, and program return starts；If no
Signal then performs step f)；
F) PLC controller (1) control solenoid valve operation lock gear air cylinder (4) padlock, PLC controller (1) detect backset in T time
The feedback signal of sensor (7), if without signal, touch screen (9) shows backset failure, prompts to overhaul, on touch screen (9)
Gear D Button Colors become red, program return starts；If there is signal then performs step g)；
G) PLC controller (1) control solenoid valve operation lock gear air cylinder (4) unlocks again, and PLC controller (1) detects in T time
The signal of backset sensor (7), if still there is signal, touch screen (9) shows backset failure, prompts maintenance, touch screen (9)
On gear D Button Colors become red, program return starts；Step h) is performed if without signal；
H) PLC controller (1) control solenoid valve operation shifting cylinder (3) is suspended to D grades, PLC controller (1) in T time simultaneously
The sensor signal of top gear sensor (5) and low or first gear sensor (6), D grades of acquisition and D ' shelves is detected, if D grades of no signals
Or D ' shelves have signal, then touch screen (9) shows that extension shelves are unsuccessful, and program starts micro- pendulum pattern and is transferred to step j)；If D grades
There are signal and D ' shelves no signals, then perform step i)；
I) PLC controller (1) control solenoid valve operation lock gear air cylinder (4) padlock, PLC controller (1) detect backset in T time
The feedback signal of sensor (7), if without signal, touch screen (9) shows that backset is unsuccessful, and program starts micro- pendulum pattern and is transferred to
Step j)；If there is signal then shows that gear D buttons are shifted gears successfully for green color expression on touch screen (9), EP (end of program) is changed
Gear is completed；
J) micro- pendulum pattern：PLC controller (1) starts winch motor by Bypass Control and keeps zero-speed, PLC controller (1) control
Winch motor band driven input shaft fine motion rotation processed, while shifting cylinder (3) continues to execute extension shelves；PLC controller (1) detects in real time
The signal of all the sensors if D grades of feedback-less or D ' shelves have feedback, continues cycling through and performs micro- pendulum；If D grades have feedback
And D ' shelves feedback-less, then illustrate that gear has been hung up, further start backset cylinder (4) and lock gear, detection backset sensor (7)
There is feedback then to show that gear D buttons are shifted gears successfully for green color expression on touch screen (9), EP (end of program), gearshift are completed；Micro- pendulum
Clocking capability has been circularly set, has been lockked if actual cycle time T is more than preset time t ' there are no shelves are hung, micro- pendulum loses
It loses, the gear D Button Colors on touch screen (9) become red, and program return starts.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610985676.XA CN106395661B (en) | 2016-11-09 | 2016-11-09 | A kind of one-touch shifting system of well drilling hoist and method |
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| CN201610985676.XA CN106395661B (en) | 2016-11-09 | 2016-11-09 | A kind of one-touch shifting system of well drilling hoist and method |
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| CN106395661B true CN106395661B (en) | 2018-07-10 |
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| CN110228758B (en) * | 2019-05-29 | 2021-05-04 | 宝鸡石油机械有限责任公司 | Oil winch integral type reducing gear box |
| CN112576385A (en) * | 2020-11-25 | 2021-03-30 | 宝鸡石油机械有限责任公司 | Diesel engine driven drilling pump set control system and control method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH06329391A (en) * | 1993-05-21 | 1994-11-29 | Hitachi Constr Mach Co Ltd | Load detector for winch |
| CN2815995Y (en) * | 2004-12-27 | 2006-09-13 | 中国石油集团科学技术研究院江汉机械研究所 | Driller winch |
| CN201149078Y (en) * | 2007-07-02 | 2008-11-12 | 宝鸡石油机械有限责任公司 | Novel gear shift mechanism of petroleum winch capstan |
| CN101260938A (en) * | 2007-12-27 | 2008-09-10 | 奇瑞汽车股份有限公司 | Automobile electric control mechanical type automatic speed variator hydraulic system and its control method |
| CN101915301B (en) * | 2010-09-10 | 2013-06-19 | 湘潭电机股份有限公司 | Five-gear automobile gear-box gear-shifting pneumatic device and gear-shifting control method |
| CN202897895U (en) * | 2012-11-26 | 2013-04-24 | 四川中曼电气工程技术有限公司 | Two-gear automatic gear shift control system of winch in drilling machine |
| CN204529201U (en) * | 2015-01-22 | 2015-08-05 | 宝鸡石油机械有限责任公司 | The used time delay release control device of stopping of petroleum winch |
| CN205605803U (en) * | 2016-03-31 | 2016-09-28 | 陕西法士特齿轮有限责任公司 | Pneumatic type stopper mechanism |
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