CN108821152A - A kind of petroleum drilling winch parking disc brake system - Google Patents
A kind of petroleum drilling winch parking disc brake system Download PDFInfo
- Publication number
- CN108821152A CN108821152A CN201810303919.6A CN201810303919A CN108821152A CN 108821152 A CN108821152 A CN 108821152A CN 201810303919 A CN201810303919 A CN 201810303919A CN 108821152 A CN108821152 A CN 108821152A
- Authority
- CN
- China
- Prior art keywords
- disc brake
- gas
- brake
- booster pump
- parking
- 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
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
- B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
- B66D5/12—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with axial effect
- B66D5/14—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with axial effect embodying discs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
- B66D5/32—Detent devices
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Systems And Boosters (AREA)
- Braking Arrangements (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The invention discloses a kind of petroleum drilling winch parking disc brake systems, including winch, brake disc, gas-liquid booster pump and driller house disc brake console, brake disc is equipped with safety tongs, the pipeline of the air supply system of gas-liquid booster pump is equipped with automatic disconnecting device, air cavity in gas-liquid booster pump is equipped with rapid escape valve, the oil feed line of gas-liquid booster pump is connected to the oil inlet of safety tongs, driller house disc brake console is equipped with parking disc brake control system, it brakes with dynamic braking, parking brake and emergency brake, also linkage is equipped with anti-collision and brakes, the drilling machine safety system of power interruption braking and break brake.Using without hydraulic standing posture parking disc brake system, disc brake system structure is simplified, in addition, introducing emergency brake and multiple anticollision system in disc brake control system, guarantees the safety of drillng operation, improves the reliability and safety of disc brake braking.
Description
Technical field
The invention belongs to technical field of oil drilling equipment, are related to a kind of petroleum drilling winch parking disc brake system.
Background technique
Currently, AC frequency conversion electric drive petroleum drilling winch mostly uses hydraulic disc brake (hereinafter referred to as disc brake) and energy consumption
The brake system that braking brake combines, as alternating frequency conversion technique reaches its maturity, in drilling operation course, dynamic braking system
Use of uniting is more and more frequent.Existing hydraulic disc brake frequently includes independent hydraulic station, working clamp, safety tongs, brake disc and disk
Brake console etc., hydraulic station match a preparation and a use double pump group, and a variety of accessory kits such as band control valve block, system structure is complicated, energy consumption
Big and occupancy much room, manufacturing cost is high and is not easy to later maintenance；In addition, the working clamp used in hydraulic disc brake is stopped
Vehicle, working clamp and dynamic braking simultaneously participate in during retarding braking, but since the braking process of dynamic braking is by program
Control, the investment braking of working clamp brake at this time, if working clamp brake handle misoperation, cannot brake with dynamic braking
The curve fitting of journey is consistent, it is easy to cause driving motor high torque to export, with the working clamp brake as load end
It is formed " confrontation ", causes disorder cable even to be suppressed and stop drill power system, system is adversely affected safely.
Summary of the invention
The object of the present invention is to provide a kind of petroleum drilling winch parking disc brake systems, solve existing in the prior art
Disc brake system structure complexity and disc brake braking, which there are problems that suppressing, stops dynamical system risk.
The technical scheme is that a kind of petroleum drilling winch parking disc brake system, including winch and brake disc, it is described
Brake disc is installed with safety tongs by tong holder, and the side of the winch is equipped with gas-liquid booster pump, the air inlet of gas-liquid booster pump one end
Mouth is communicated with air supply system, and automatic disconnecting device, the oil inlet of the gas-liquid booster pump other end are equipped on the pipeline of air supply system
It is connected with lubricating cup, the oil pocket in gas-liquid booster pump is connected to by oil feed line with the oil inlet of the safety tongs, and the gas-liquid increases
Air cavity in press pump is equipped with rapid escape valve, and the air inlet control of gas-liquid booster pump is grasped by driller house disc brake console
Control, to control safety tongs brake or safety tongs release.
The working principle of the program is：Oil pocket in gas-liquid booster pump is connected by the oil inlet of oil feed line and safety tongs
Logical, in drilling operation course, air-path control system is supplied to the air cavity of gas-liquid booster pump, gas-liquid booster pump export high pressure oil to
Safety tongs, to open safety tongs spring, safety tongs opens, winch normal operation；When pressing parking in driller house disc brake console
When brake or emergency brake, gas-liquid booster pump inlet tube road is equipped with automatic disconnecting device, is cut off under control system
And die, the high pressure gas of air cavity is returned to zero by rapid escape valve rapid deflation, air cavity pressure in gas-liquid booster pump, safety tongs liquid
Pressure oil is back to rapidly in the lubricating cup of gas-liquid pressure-boosting valve, and oil pressure also returns to zero, the brake of safety tongs spring reset.
The features of the present invention also characterized in that：
Further, the air supply system includes the air accumulator being connected to by pipeline, and the other end of air accumulator was connected with
Pressure reducer is filtered, filtering pressure reducer is connect with the automatic disconnecting device, and automatic disconnecting device passes through pressure reducing valve and the gas-liquid again
The air inlet of booster pump is connected to.
Further, the automatic disconnecting device includes multiple double three-way control valves.
Further, one or more is also equipped on the pipeline being connected in the air supply system with the gas-liquid booster pump
A rapid escape valve.
Further, the oil pocket in the gas-liquid booster pump is equipped with pressure gauge and pressure sensor.
Further, the safety tongs is normally closed pincers.
Further, the driller house disc brake console is equipped with parking disc brake control system, parking disc brake control system packet
PLC programmable controller is included, PLC programmable controller is connect by I/O module with the field data of the parking disc brake system,
Parking disc brake control system can be designed by automatically controlled gas or gas control gas mode.
Further, the parking disc brake control system be equipped with dynamic braking brake, parking brake and emergency brake, and
Control button or control handle are correspondingly provided on driller house disc brake console.
Further, the drilling machine that the emergency brake linkage is equipped with anti-collision brake, power interruption braking and break brake is protected safely
Protecting system.
Further, the field data of the parking disc brake system includes equipped with oneself of signal acquisition and transfer function
Dynamic disconnecting device, rapid escape valve, gas-liquid booster pump, pressure sensor, solenoid valve, anti-collision valve, pressure switch, control valve, pressure
Power switch, pressure reducing valve and shuttle valve.
The invention has the advantages that petroleum drilling winch parking disc brake system, using without hydraulic standing posture parking disc brake system
System only remains safety tongs as parking brake, and it is mating to eliminate working clamp, disc brake hydraulic station etc., simplifies disc brake system knot
Structure reduces disc brake cost, in addition, eliminating working clamp, solves disc brake by disc brake control system and brakes to exist to suppress and stop
Force system risk；Emergency brake and derrick anti-collision are introduced in disc brake control system, crosses circle anti-collision, and digital display anti-collision etc. realizes that drilling machine is more
Weight anticollision system, guarantees the safety of drillng operation, improves the reliability and safety of disc brake braking.
Detailed description of the invention
Fig. 1 is a kind of petroleum drilling winch parking disc brake system structure diagram of the present invention；
Fig. 2 is Fig. 1 safety tongs enlarged diagram；
Fig. 3 is the left view and right view of gas-liquid booster pump in Fig. 1；
Fig. 4 is a kind of petroleum drilling winch parking disc brake system operatio flow diagram of the present invention；
Fig. 5 is a kind of petroleum drilling winch parking disc brake system electric control gas control principle drawing of the present invention；
Fig. 6 is a kind of petroleum drilling winch parking disc brake system gas control gas control schematic diagram of the present invention.
In figure, 1. winches, 2. oil feed lines, 3. safety tongs, 4. tong holders, 5. brake discs, 6. driller house disc brake consoles,
7.PLC programmable controller, 8. gas-liquid booster pumps, 9. pump main bodys, 10. lubricating cups, 11. oil level indicators, 12. pressure gauges, 13. pressure pass
Sensor, 14. oil inlets, 15. rapid escape valves, 16. air inlets, 17. air accumulators, 18. filtering pressure reducers, 19. pressure reducing valves, 20.
Bleed pressure sensor, 21. anti-collision signal pressures switch, 22. brake control (normal off) solenoid valves, 23. brake controls (normal open)
Solenoid valve, 24. cross circle anti-collision solenoid valves, 25. double three-way control valve A, 26. shuttle valves, 27. double three-way control valve B, and 28. 2
Position threeway Pneumatic valve C, 29. mistake circle anti-collision valves, 30. double three-way control valve D, 31. rapid escape valve A, 32. rapid escape valve B,
33. circle anti-collision relief valve, 34. digital pressure gauges, 35. brake signal pressure switches, 36. parking switchs, 37. emergency brakes are pressed excessively
Button, 38. digital display anti-collision solenoid valves, 39. double three-way control valve E, 40. double three-way control valve F, 41. derrick anti-collision valves.
Specific embodiment
The following describes the present invention in detail with reference to the accompanying drawings and specific embodiments, but the present invention is not limited to these realities
Apply mode.
A kind of petroleum drilling winch parking disc brake system of the present invention, as depicted in figs. 1 and 2, including winch 1, brake disc 5,
Gas-liquid booster pump 8, air supply system and driller house disc brake console 6, brake disc 5 are installed with safety tongs 3, safety tongs 3 by tong holder 4
For normally closed pincers.
Air supply system includes the air accumulator 17 being sequentially communicated by pipeline, filtering pressure reducer 18, automatic disconnecting device and subtracts
Then pressure valve 19 is connected to the air inlet 16 of gas-liquid booster pump 8.
Gas-liquid booster pump 8 is set to the side of winch 1, as shown in figure 3, gas-liquid booster pump 8 mainly includes pump main body 9, oil
One end of cup 10 and oil level indicator 11, gas-liquid booster pump 8 is equipped with air inlet 16, and air supply system is connected to air inlet 16, increases for gas-liquid
Press pump gas supply；8 other end of gas-liquid booster pump is equipped with oil inlet 14, and oil inlet is connected to lubricating cup 10, is gas-liquid pressure-boosting oil pump feed.Oil
Position meter 11 is used to observe the oil level of gas-liquid booster pump 8.The oil mass as needed for parking clamp brake is small, and 10 integrated installation of lubricating cup is led in pump
On body 9, without additional hydraulic station provide hydraulic power source, and gas-liquid booster pump 8 is small in size can be directly near winch parking disc brake just
Nearly installation, greatly reduces cost and drilling floor surface space hold.Gas-liquid booster pump 8 is one and inputs air inlet air pressure in proportion
The oil pressure of certain pressure, such as 10 times of gas-liquid booster pump are exported, when admission pressure is 0.8MPa, delivery outlet oil pressure is
8MPa, further, since safety tongs acts required oil mass in 700ml or so, therefore can be by the lubricating cup and gas-liquid pressure-boosting of hydraulic oil
Pump Integrated design is integrated.
Air cavity and oil pocket are respectively equipped in the pump main body 9 of gas-liquid booster pump 8, the air inlet and air cavity of gas-liquid booster pump 8 connect
Logical, the air inlet control of gas-liquid booster pump 8 is manipulated by driller's disc brake console, to control safety tongs brake or release.
Air cavity is equipped with rapid escape valve 15, in addition, also installing on the pipeline that air supply system is connected with gas-liquid booster pump 8
There are two rapid escape valves, as shown in figure 5, being rapid escape valve A31 and rapid escape valve B32, are conducive to air cavity and gas supply system
The high pressure gas of system empties release as early as possible.
The oil inlet of gas-liquid booster pump 8 is connected to oil pocket, and oil pocket is equipped with pressure gauge 12 and pressure sensor 13, not only side
Just maintenance overhaul, pressure sensor acquisition signal are introduced into driller house disc brake console 6, brake pressure can be remotely checked, for department
Safety tongs braking state is determined when boring operation.Oil pocket in gas-liquid booster pump 8 passes through the oil inlet of oil feed line 2 and safety tongs 3
Connection, in drilling operation course, gas-liquid pressure-boosting pump steam inlet keeps normal ventilation, and pump exports high pressure oil to safety tongs 3, safety
Pincers 3 open；When driller house disc brake console 6 presses parking brake or emergency brake, gas-liquid booster pump air inlet pipeline
Automatic disconnecting device cutting and die, pump in air cavity high pressure gas by rapid escape valve rapid deflation, oil pocket oil pressure returns
Zero, safety tongs brake.Parking brake shuts down rear braking for winch, and emergency brake is used for emergency stop under emergency and brakes.
The side of gas-liquid booster pump 8 is connected with driller house disc brake console 6.Driller house disc brake console 6 is equipped with parking
Disc brake control system, parking disc brake control system include PLC programmable controller 7, and 7 device of PLC PLC technology passes through I/O module
It is connect with the field data of the parking disc brake system, parking disc brake control system can be set by automatically controlled gas or gas control gas mode
Meter.The field data of parking disc brake system includes equipped with the automatic disconnecting device with signal acquisition and transfer function, quick row
Air valve 15, gas-liquid booster pump 8, pressure sensor 13 etc..
Parking disc brake control system is equipped with dynamic braking brake, parking brake and emergency brake, and in driller house disc brake control
Control button or control handle are correspondingly provided on platform 6 processed.Emergency brake linkage is equipped with anti-collision brake, power interruption braking and break brake
Drilling machine safety system, in addition, parking disc brake control system also introduces derrick anti-collision, crosses circle anti-collision, digital display anti-collision etc. is real
The existing multiple anticollision system of drilling machine, guarantees the safety of drillng operation.
The operating process of parking disc brake system of the present invention as shown in figure 4, when including dynamic braking work brake, system parking
When and system emergency when braking, link respectively with corresponding parking disc brake control system, when emergency brake is only limitted to extreme emergency
It is used under situation.
The control system of parking disc brake system can be realized no matter which kind of mode used by automatically controlled gas and gas control gas two ways
It can link with each anticollision system of drilling machine, complete anti-collision brake function, can also realize that drilling machine is died in, under off-position
Emergency brake protection.
Parking disc brake control system is designed by automatically controlled gas, as shown in figure 5, brake control is (often in normal operation
It is disconnected) solenoid valve 22 is power-off, brake control (normal open) solenoid valve 23 is to be powered, and crossing circle anti-collision solenoid valve 24 is to be powered, drilling machine gas
Source transmits a signal to control system by bleed pressure sensor 20, and drilling machine gas source is by air accumulator 17, filtering decompressing unit
18, double three-way control valve B27, double three-way control valve C28, pressure reducing valve 19, rapid escape valve 15 are to gas-liquid booster pump main body 9
Air cavity gas supply, oil pumping chamber export high pressure liquid pressure oil to safety tongs 3, open safety tongs 3.When having served as the circle movement of anti-collision valve 29, gas
Source by cross circle anti-collision solenoid valve 24 by circle anti-collision valve 29 gas circuit be connected, anti-collision signal pressure switch 21 it is electric to PLC control
System issues feedback signal, while gas source makes double three-way control valve A25, double three-way control valve B27 commutate by shuttle valve 26,
Automatic disconnecting device is installed on the pipeline of air supply system, so that gas source is via double three-way control valve B27, two-position three way gas control
The gas circuit of valve C28 is cut off, and 9 air cavity of gas-liquid booster pump main body is died, and residual air is discharged through rapid escape valve 15 in air cavity, safety tongs
3 decompressions closure realizes anti-collision brake.In drilling machine power loss, brake control (normal open) solenoid valve 23 is power-off commutation, is caused and two
The gas circuit of position threeway Pneumatic valve A25 is cut off, double three-way control valve B27 commutation, and final 9 air cavity of gas-liquid booster pump main body is disconnected
Gas realizes power interruption braking.If drilling machine is died, 9 air cavity of gas-liquid booster pump main body is also died therewith, realizes break brake.
Parking disc brake control system is designed by gas control gas, as shown in fig. 6, in normal operation, digital display anti-collision electromagnetism
Valve 38 is to be powered, and parking switch 36 and emergency brake button 37 are not carried out movement, and parking switch 36 and emergency brake button 37 are right
Emergency brake control valve and parking switch valve should be equipped with.Derrick anti-collision valve 41 is to disconnect position, and drilling machine gas source passes through air accumulator 17, mistake
Filter pressure reducer 18, double three-way control valve F40, double three-way control valve E39, digital display anti-collision solenoid valve 38, emergency brake control
Valve, parking switch valve, rapid escape valve 32 are ventilated to double three-way control valve D30, double three-way control valve D30 commutation, gas-liquid
Booster pump main body 9 is connected for air circuit, and oil pumping chamber exports high pressure liquid pressure oil to safety tongs 3, opens safety tongs 3.When derrick is anti-
When touching valve 41 or crossing circle anti-collision valve 29 or cross the movement of circle anti-collision relief valve 33, corresponding gas circuit conducting, in addition, the pipe of air supply system
Road is equipped with automatic disconnecting device, makes double three-way control valve E39 commutation cutting double three-way control valve D30 ventilation gas circuit,
To cut off gas-liquid booster pump main body 9 for air circuit, residual air is discharged through rapid escape valve 15 in 9 air cavity of gas-liquid booster pump main body,
3 decompression of safety tongs closure realizes anti-collision brake, in addition, digital pressure gauge is connect with rapid escape valve 15, while being connected with brake
Signal pressure switch 35.When receiving anti-collision signal or when system cut-off, power-off commutation can also be cut digital display anti-collision solenoid valve 38
Disconnected double three-way control valve D30 ventilation gas circuit, disconnects gas-liquid booster pump main body 9 and is closed for 3 decompression of air circuit safety tongs, realize number
Aobvious anti-collision brake or power-off protection brake.If drilling machine is died, 9 air cavity of gas-liquid booster pump main body is also died therewith, is realized disconnected
Pneumatic brake.
Petroleum drilling winch parking disc brake system of the present invention simplifies disc brake using without hydraulic standing posture parking disc brake system
System structure reduces disc brake cost, in addition, eliminating working clamp, solves disc brake braking by disc brake control system and exists
It suppresses and stops dynamical system risk；Emergency brake and derrick anti-collision are introduced in disc brake control system, crosses circle anti-collision, and digital display anti-collision etc. is real
The existing multiple anticollision system of drilling machine, guarantees the safety of drillng operation, improves the reliability and safety of disc brake braking.
Claims (9)
1. a kind of petroleum drilling winch parking disc brake system, including winch (1) and brake disc (5), which is characterized in that the brake
Disk (5) is installed with safety tongs (3) by tong holder (4), and the side of the winch (1) is equipped with gas-liquid booster pump (8), gas-liquid booster pump
(8) air inlet (16) of one end is communicated with air supply system, and automatic disconnecting device, gas-liquid pressure-boosting are equipped on the pipeline of air supply system
Pump (8) other end oil inlet (14) be connected with lubricating cup (10), the oil pocket in gas-liquid booster pump (8) by oil feed line (2) with
The oil inlet of the safety tongs (3) is connected to, and the air cavity in the gas-liquid booster pump (8) is equipped with rapid escape valve (15), gas-liquid
The air inlet control of booster pump (8) is manipulated by driller house disc brake console (6).
2. a kind of petroleum drilling winch parking disc brake system as described in claim 1, it is characterised in that：The air supply system packet
The air accumulator (17) being connected to by pipeline is included, the other end of air accumulator (17) is connected with filtering pressure reducer (18), filtering pressure reducer
(18) it is connect with the automatic disconnecting device, automatic disconnecting device passes through pressure reducing valve (19) and the gas-liquid booster pump (8) again
Air inlet (16) connection.
3. a kind of petroleum drilling winch parking disc brake system as claimed in claim 1 or 2, it is characterised in that：It is described to cut automatically
Disconnected device includes multiple double three-way control valves.
4. a kind of petroleum drilling winch parking disc brake system as claimed in claim 1 or 2, it is characterised in that：The gas supply system
One or more rapid escape valves are also equipped on the pipeline being connected in system with the gas-liquid booster pump (8).
5. a kind of oil drilling parking winch disc brake system as described in claim 1, it is characterised in that：The gas-liquid booster pump
(8) oil pocket in is equipped with pressure gauge (12) and pressure sensor (13).
6. a kind of petroleum drilling winch parking disc brake system as described in claim 1, it is characterised in that：The safety tongs (3)
For normally closed pincers.
7. a kind of petroleum drilling winch parking disc brake system as described in claim 1, it is characterised in that：The driller house disc brake
Console (6) is equipped with parking disc brake control system, and parking disc brake control system includes PLC programmable controller (7), and PLC can be compiled
Process control (7) device is connect by I/O module with the field data of the parking disc brake system, and parking disc brake control system can be by electricity
Control gas or gas control gas mode are designed.
8. a kind of petroleum drilling winch parking disc brake system as claimed in claim 7, it is characterised in that：The parking disc brake control
System processed is equipped with dynamic braking brake, parking brake and emergency brake, and is correspondingly provided with control on driller house disc brake console (6)
Button processed or control handle.
9. a kind of petroleum drilling winch parking disc brake system as claimed in claim 8, it is characterised in that：The emergency brake connection
The dynamic drilling machine safety system equipped with anti-collision brake, power interruption braking and break brake.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810303919.6A CN108821152B (en) | 2018-07-20 | 2018-07-20 | Parking disc brake system of petroleum drilling winch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810303919.6A CN108821152B (en) | 2018-07-20 | 2018-07-20 | Parking disc brake system of petroleum drilling winch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108821152A true CN108821152A (en) | 2018-11-16 |
| CN108821152B CN108821152B (en) | 2020-08-25 |
Family
ID=64155363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810303919.6A Active CN108821152B (en) | 2018-07-20 | 2018-07-20 | Parking disc brake system of petroleum drilling winch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108821152B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201196139Y (en) * | 2008-05-07 | 2009-02-18 | 刘仁庭 | Gas-liquid booster pump for disk type brake of oil field truck-mounted drilling rig workover rig |
| CN201245414Y (en) * | 2008-08-07 | 2009-05-27 | 中国石油天然气股份有限公司 | Hydraulic control disc type brake device |
| CN104724626A (en) * | 2015-02-02 | 2015-06-24 | 河南省汇隆精密设备制造有限公司 | Powerful brake device |
| CN204674560U (en) * | 2015-05-07 | 2015-09-30 | 宝鸡石油机械有限责任公司 | Large-scale petroleum pulls module service braking system |
-
2018
- 2018-07-20 CN CN201810303919.6A patent/CN108821152B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201196139Y (en) * | 2008-05-07 | 2009-02-18 | 刘仁庭 | Gas-liquid booster pump for disk type brake of oil field truck-mounted drilling rig workover rig |
| CN201245414Y (en) * | 2008-08-07 | 2009-05-27 | 中国石油天然气股份有限公司 | Hydraulic control disc type brake device |
| CN104724626A (en) * | 2015-02-02 | 2015-06-24 | 河南省汇隆精密设备制造有限公司 | Powerful brake device |
| CN204674560U (en) * | 2015-05-07 | 2015-09-30 | 宝鸡石油机械有限责任公司 | Large-scale petroleum pulls module service braking system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108821152B (en) | 2020-08-25 |
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Effective date of registration: 20200928 Address after: Baoji City, Shaanxi Province, 721002 Dongfeng Road, Jintai District No. 2 Patentee after: Baoji Oilfield Machinery Co.,Ltd. Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC national oil and gas drilling equipment Engineering Technology Research Center Co., Ltd Address before: Baoji City, Shaanxi Province, 721002 Dongfeng Road, Jintai District No. 2 Patentee before: Baoji Oilfield Machinery Co.,Ltd. |