Tourist bus anti-collision, the anti-automatic deceleration braking control device of pounding
Technical field:
The utility model relates to the tourist bus anti-collision of a kind of rig, service machine or other lifting means, the anti-automatic deceleration braking control device of pounding, and belongs to the accessories apparatus field of oil field drilling-production equipment.
Background technology:
In drilling well, remedial work, no matter day and night, the weather quality all can not be interrupted operation, because driller's operation fatigue and environmental factor are easy to take place the incident that tourist bus bumps overhead traveling crane and pounds rig floor.Cause the derrick distortion when serious because of anti-collision is malfunctioning, collapse, because of anti-pounding malfunctioningly causes drilling tool to rupture and cause great serious accidents such as well site fire by the spark of pounding generation down.In order to ensure the safety of drilling well, remedial work, three covers generally all are housed on rig, service machine bump (claim the overhead traveling crane anti-collision again---bump against with overhead traveling crane when carrying on the tourist bus) device on anti-, promptly weight hammer type, cross tired valve formula and the anti-upward crash device of electronic type.Preceding two kind mechanical position limitation formula anti-collisions, the back is a kind of to be by after the rotation calculated altitude that detects winch drum, brakes at the height of setting.These three kinds of brake gears all have a common feature, exactly after reaching standing height, just begin to open brake fluid, gas circuit by change-over valve, brake by brake fluid, air cylinder driven brake shoes or brake strap.Though existing electronic type anti-collision brake system generally all has the indication of tourist bus height, standing height warning function, can not be applicable to all operating modes.
All there is following weak point in the anti-crash device of going up of three above-mentioned covers.
One, the liquid gas pressure valve member of above-mentioned three covering devices control all is a change-over valve, can only realize simple emergency brake, there are two big defectives in this brake modes: the first, since too simply brake process make brake too urgent, potential energy converting and energy after the tourist bus upper punch becomes the kinetic energy that dashes down, make it to skip rope, embedding rope, momentary overload, derrick acutely rock etc., influence production safety and production efficiency, and big rope is damaged easily.Because derrick acutely rocks, often cause driller and other operating personnel's outbreak.The second, because the brake starting point is fixed, because of the gap change of brake actuating mechanism, can make the dead point height change of stopping, piece or brake strap gap are bigger than normal when stopping, and hoisting speed often still can be hit the overhead traveling crane accident when fast.
Two, existing electronic type anti-collision brake system, its height (comprising upper and lower warning) of reporting to the police is also fixed, and this type of alarm often disturbs driller's normal running sometimes, and when tourist bus speed was very fast, even report to the police, the driller also had little time reaction and handles.
Three, because anti-pounding down requires high brake accuracy of positioning, above-mentioned three covering devices do not possess anti-function and the anti-hardware condition of pounding down pounded down.No matter existing electronic type anti-collision brake system also can only accomplish prevent under pounds warning from control principle or practical application.And under pound and might cause drilling tool fracture, even may be because the spark that produces when pounding down causes the well site fire.
Summary of the invention:
The purpose of this utility model is: overcome the above-mentioned anti-deficiency that crash device exists that goes up, providing a kind of is installed in the turn signal of the rotary encoder on the winch drum shaft and gathers the tourist bus dead line drag load that load transducer detects by collection, and the lock torque curve of the used brake actuating mechanism of foundation, calculate back output analog quantity by control setup main frame comprehensive analyses, control the control of automatically controlled proportional pressure-reducing valve or servovalve realization to brake weight, reach by system requirements and progressively control tourist bus speed, and the final tourist bus anti-collision of realizing steadily brake and position brake, the anti-automatic deceleration braking control device of pounding.By calculating to tourist bus running velocity and height, with reference to the time response of automatically controlled proportional pressure-reducing valve or servovalve and brake actuating mechanism, and consider the driller react and operate in case of necessity between, carry out intelligent alarm.
The utility model is to realize above-mentioned purpose by the following technical solutions:
This tourist bus anti-collision, anti-pound the automatic deceleration braking control device and comprise power supply adaptor, rotary encoder, load transducer, control setup main frame, warning device, automatically controlled proportional pressure-reducing valve or servovalve and brake actuating mechanism, power supply adaptor is connected with the power interface of control setup main frame, automatically controlled proportional pressure-reducing valve or servovalve connect the brake actuating mechanism that is contained on the winch by influidic pipe spare, it is characterized in that:
Described rotary encoder is installed on the winch drum shaft, and its mouth is connected with the control setup main frame by cable, sends the rotation information of winch drum shaft to the control setup main frame with pulse singaling;
Described load transducer is installed on the wireline anchor of tourist bus, and mouth is connected with the control setup main frame by cable, and load change is transferred to the control setup main frame with the analog quantity of 4-20mA;
Described control setup main frame is used to finish the data handing and the calculating of load transducer and rotary encoder transmission, and will send the control port of automatically controlled proportional pressure-reducing valve or servovalve to and carry out intelligent alarm by warning device in advance by cable with analog control signal according to the brake controlling quantity that tourist bus height, speed, load, braking mechanism characteristic are made by brake control output circuit.
Control setup main frame particular case according to height, speed, load in control process is constantly adjusted output current value, adjusts brake weight by automatically controlled proportional pressure-reducing valve or servovalve, the accurate pulsation-free of tourist bus is stopped be parked in the requirement height.
The control setup main frame is by the calculating to tourist bus running velocity and height, time response with reference to automatically controlled proportional pressure-reducing valve or servovalve and brake actuating mechanism, and consider the driller react and operate in case of necessity between, carry out intelligent alarm in advance by warning device.
The novel advantage compared with prior art of this reality is:
1, by calculating to tourist bus running velocity and height, with reference to the time response of automatically controlled proportional pressure-reducing valve or servovalve and brake actuating mechanism, and consider the driller react and operate in case of necessity between, carry out intelligent alarm.Neither report to the police too early, disturb driller's normal running; Report to the police late only, make the driller have little time reaction.
2, the height and the speed of tourist bus operation is judged, calculated to the turn signal that is installed in the rotary encoder on the winch drum shaft by collection, detect the load of tourist bus by the load transducer that detects the dead line pulling force, and the lock torque curve of the used brake actuating mechanism of foundation, comprehensive analyses calculates back output analog quantity and controls automatically controlled proportional pressure-reducing valve or servovalve, realization is to the control of brake weight, reach by system requirements and progressively control tourist bus speed, the accurate pulsation-free of tourist bus is stopped be parked in the height of requirement.
3, overcome existing braking control device brake starting point and fixed, it is too urgent that brake process makes brake simply, and easily skip rope, embedding rope, momentary overload, derrick acutely rock etc. caused the shortcoming of driller and other operating personnel's outbreak.By deceleration control, reach accurate location, steadily brake, thereby realize anti-collision and anti-pounding, ensure the safety of drilling well, remedial work.
Description of drawings:
Fig. 1 is tourist bus anti-collision, the anti-structure principle chart of pounding the automatic deceleration braking control device;
Fig. 2 is the brake control output circuit figure of control setup main frame.
Among the figure: 1, power supply adaptor, 2, rotary encoder, 3, load transducer, 4, the control setup main frame, 5, warning device, 6, automatically controlled proportional pressure-reducing valve or servovalve, 7, hydraulic power source or pneumatic supply, 8, brake actuating mechanism, 9 winches, 10, tourist bus, 11, overhead traveling crane.
The specific embodiment:
This tourist bus anti-collision, anti-pound the automatic deceleration braking control device and constitute by power supply adaptor 1, rotary encoder 2, load transducer 3, control setup main frame 4, warning device 5, automatically controlled proportional pressure-reducing valve or servovalve 6, hydraulic power source or pneumatic supply 7 and brake actuating mechanism 8, power supply adaptor 1 is connected with the power interface of control setup main frame 4, and external source is transformed to the required DC24V power supply of control setup main frame.Automatically controlled proportional pressure-reducing valve or servovalve 6 connect the brake actuating mechanism 8 (referring to accompanying drawing 1) that is contained on the winch 9 by influidic pipe spare.Rotary encoder 2 is installed on the drum shaft of winch 9, is connected with control setup main frame 4 by cable, and when winch 9 rotated, Hall spare produced impulse singla and passes to control setup main frame 4 by cable under the effect of the magnet steel that rotates with cylinder.Load transducer 3 is installed on the wireline anchor of tourist bus 10, by with the connecting cable of control setup main frame 4, load change is transferred to control setup main frame 4 with the analog quantity of 4~20mA.Control setup main frame 4 is made up of micro controller system, data acquisition circuit, brake control output circuit, display circuit, keyboard and input circuit, warning output circuit etc.Control setup main frame 4 is installed in driller such as driller's control box and easily sees the easy-to-operate place, and control setup main frame 4 is realized functions such as data acquisitions, data handing, demonstration, control and warning output.Automatically controlled proportional pressure-reducing valve or servovalve 6 are connected with control setup main frame 4 by cable, under the analog quantity control of control setup main frame 4 outputs, after the liquid of hydraulic power source or pneumatic supply 7, the requirement decompression of gaseous tension by control setup main frame 4, by liquid, gas circuit pipeline control brake actuating mechanism 8 (hydraulic pressure dish stop the hydraulic actuating cylinder of working clamp or the brake cylinder that band is stopped), thereby produce suitable brake torque, make winch 9 realize slowing down.The cylinder of winch 9 and hydraulic pressure dish are stopped or are with to stop to belong to and be rigidly connected, so slow down thereupon, tourist bus also just slows down thereupon.Control setup main frame 4 is constantly adjusted output current value according to height with the particular case of speed in control process, adjust brake weight by automatically controlled proportional pressure-reducing valve or servovalve 6, tourist bus 10 accurate pulsation-frees is stopped be parked in the requirement height.
This tourist bus anti-collision, to put the feature of pounding the automatic deceleration braking control device mainly be control to tourist bus speed, and realized by control setup main frame 4.The micro controller system of control setup main frame 4, data acquisition circuit, warning output circuit, display circuit, keyboard and input circuit are general integrated package or universal circuit, and principal feature is brake control output circuit (referring to accompanying drawing 2).The C8051F040 micro controller system of this brake control output circuit with the turn signal of the rotary encoder 2 that receives through declaring to, calculate the height and the running velocity of tourist bus; Calculate the load of tourist bus after simultaneously 4~20mA signal of load transducer 3 being changed through AD.Micro controller system is located height value according to the brake of these data and setting again, and according to the lock torque curve of used brake actuating mechanism 8 (hydraulic pressure dish stop or with stopping), calculate the analog quantity of back by comprehensive analyses by DAC0 mouth output 0~2V, through UD1A, B (LM2904) and UD3 (ISOUIPZ01) are transformed into cooresponding 4~20mA control signal, realization is to the control of automatically controlled proportional pressure-reducing valve or servovalve 6 delivery pressures, the final brake weight control that realizes 4 pairs of brake shoes of control setup main frame or brake strap, thereby reach the tourist bus running velocity according to height---rate request carries out slowing-down brake control.System's various control parameter adopts respectively to solidify in program as required utilizes the keyboard of control setup main frame 4 to insert the control program module that dual mode writes with on-the-spot, in the hope of being suitable for various hardware (valve and brake actuating mechanism), make it to reach the optimal control effect.