CN2169698Y - Electronic igniter for IC rock drill - Google Patents

Abstract

The utility model belongs to an electronic ignition device for an internal-combustion driller. The utility model is characterized in that a charge coil L< 1 > which is wound on a control iron core (1) is connected with diodes D< 1 > and D< 2 > to form a half-wave rectification circuit; the negative electrodes of the diodes D< 1 > and D< 2 > are connected with the anode of a controlled silicon SCR and one end of a capacitor C, the positive electrode of a diode D< 3 > is connected in series with one end of a triggering coil L< 2 > and then connected in parallel with a resistor R between a control panel of the controlled silicon SCR and the negative pole of the diode D< 3 >, the other end of the capacitor C is connected with the connecting end of the primary coil L< 3 > and the secondary coil L< 4 > of an ignition coil (5), the other end of the primary coil L< 3 > of the ignition coil (5) is connected with the negative pole, and the secondary coil L< 4 > of the ignition coil (5) is connected with a spark plug (8). The utility model overcomes fully the disadvantages of a mechanical contact magneto and has the advantages of convenient operation, high electrical performance and strong sparks; the utility model improves the starting performance and drilling speed of the internal-combustion driller, and the whole ignition system of the utility model has the advantages of temperature resistance, pressure resistance, shock resistance, etc.

Description

Electronic igniter for IC rock drill

The utility model belongs to engine starting equipment, especially a kind of diesel rock frill electronic ignition device.

In existing technology, the internal-combustion engine rock drill is to adopt the ignition mechanism that machinery platinum contact, contact is arranged, it gets angry intensity difference, a little less than the spark, has directly influenced the speed of punchinging and the starting performance of rock drill, the failure rate of machinery height, ablation can be polluted in the platinum contact, and is cracked, loosening, and will often clean and the adjusting play, safeguard for production and bring inconvenience.Ignition continues to bring out at present, and what its performance was more traditional is greatly improved, and from improving 2 kinds of schemes of technology that spark energy adopted, a kind of is according to WP=0.5Llp ²WP-is stored in the energy (joule) in the coil, L-primary inductance (Henry) lp-interruption current (ampere), it relied in the igniting cycle, impel coil to store the energy WP that tries one's best big to increase interruption current lp, thereby obtain powerful spark energy at last through coil first grade coupled, this is a kind of big current scheme.Another kind then is to give the coil intake continuously a firing time, obtains the continuously sparking discharge through first coupling.Both can both be reached for petrolic igniting enough big ignition energy is provided, and guarantee the thorough burning of mixed gas, improve the power character and the Economy of motor.Yet big current scheme is owing to need special-purpose high-power switch tube or special chip, and big electric current increases the hear rate and the magnetic saturation impact effect of coil again, and small product size is big, the cost height, and the production process difficulty is big.Though little current scheme overcomes a series of shortcomings that big current work brings, but Chinese patent from bulletin, all more or less exist the incomplete place of function, can't be in implementation process by specialty examination and test approval, Chinese patent, the patent No. 88209862.4 " beam type ignition mechanism " and patent No. CN87215601U " many sparks of motor high-energy electronic igniter; from circuit analysis; when ignition lock is connected power supply; circuit breaker is in a certain sender state; forget closing as the driver; then this system works, and not only wastes electric energy, and burns out coil easily always, in addition: be subjected to discharge time circuit breaker to open and close time effects, frequency of okperation, the speed and current characteristic all is difficult to up to standard.

The purpose of this utility model provides a kind of easy to maintenance, electrical properties height, the diesel rock frill electronic ignition device that spark is strong.

The purpose of this utility model is achieved in that it by spark coil, the controller iron core, and left and right utmost point piece, magnet steel, controller constitute, and it is characterized in that: the charge coil L that is wound on the control iron core ₁With diode D ₁, connect and compose one way rectifier, diode D ₁, D ₂Negative pole is connected on the end of controllable silicon SCR anode and capacitor C, diode D ₃Positive pole and trigger winding L ₂One end series connection back and resistance R are connected in parallel between the controllable silicon SCR control utmost point and the negative pole, the elementary L of the other end contact fire coil of capacitor C ₃, inferior utmost point L ₄Connecting end, the elementary L of spark coil ₃Another termination negative pole, ignition wire circle time utmost point L ₄Connect spark plug, controller iron core upper and lower part respectively is provided with arc, has 2 grooves not of uniform size on the arc of top, charge coil L ₁Be wound on a side of vat, a side of sulculus is wound with trigger winding L ₂, have the central authorities that the rectangular magnet steel is installed in left and right utmost point piece.The controller iron core adopts after the folded riveting and control unit constitutes an integral installation on the chassis of complete machine.Left and right utmost point piece iron core and magnet steel are installed in flywheel one side of complete machine, and the antimere of flywheel is provided with equilibrate counterweight.To guarantee the complete machine running steadily.

The utility model has following advantage compared to existing technology:

1, circuit is simple, and starting performance is good, the electrical properties height;

2, spark is strong, no circuit fire phenomenon;

3, running is stable, and fuel-efficient, laborsaving, heatproof, advantage such as withstand voltage, shatter-proof.

Fig. 1 is the utility model circuit theory diagrams;

Fig. 2 is the utility model circuit theory connection diagram;

Fig. 3 is that left and right utmost point piece of the utility model and magnet steel are installed view;

Fig. 4 is the utility model controller iron core schematic representation.

Be further described below in conjunction with the utility model embodiment accompanying drawing, the utility model is that diesel rock frill is continued to use the ancient great improvement of contact mechanical ignition that has, and makes diesel rock frill step into a frontier.Its working principle is: see Fig. 1 for details, when diesel rock frill flywheel (4) is driven by stay cord, when flywheel (4) rotates, make the charge coil L that is wound on the same controller iron core (1) ₁Winding and trigger winding L ₂Winding cutting by about the magnetic line of force of utmost point piece (2) and magnet steel (3), at this moment, at charge coil L ₁Winding and trigger winding L ₂Induce alternating voltage V _OAnd V _G, V _OVoltage is through diode D ₁, the half-wave voltage after the rectification charges to capacitor C, when diesel rock frill needs ignition operation, V _GThrough diode D ₃Send a pulse with current-limiting resistance R, trigger controllable silicon SCR, make controllable silicon SCR become on state by cut-off state, at this moment, the electric energy moment process controllable silicon SCR that stores in the capacitor C is to the primary air L of spark coil (5) ₃Winding discharge is delivered to spark plug (8) thereby induce high-tension electricity at the secondary windings of spark coil (5), and the mixed gas of lighting in the cylinder makes engine operation.Fig. 2,3, the 4th, the utility model combination principle figure is at the whole machine installation schematic representation, left and right utmost point piece (2) is installed in the flywheel (4) after folding riveting by steel disc, magnet steel (3) is installed in wherein, and the bottom of corresponding left and right utmost point piece (2) and magnet steel (3) is provided with the suitable mutually controller iron core (1) of size and is installed on the chassis (6).The diesel rock frill electronic ignition device has overcome mechanical whole shortcomings that the contact magnetogenerator is arranged fully, and easy to use, the electrical properties height, spark is strong, improved the diesel rock frill starting performance and the speed of punchinging, during starting, as long as can start once drawing gently, during work, no circuit fire phenomenon, complete machine is stable, and have fuel-efficient, save time, laborsaving, whole ignition system has heatproof, withstand voltage, shatter-proof.

Claims (3)

1, a kind of diesel rock frill electronic ignition device, it is made of spark coil, controller iron core, left and right utmost point piece, magnet steel, controller, it is characterized in that: the charge coil L that is wound on control iron core (1) ₁With diode D ₁, connect and compose one way rectifier, diode D ₁, D ₂Negative pole is connected on the end of controllable silicon SCR anode and capacitor C, diode D ₃Positive pole and trigger winding L ₂One end series connection back and resistance R are connected in parallel between the controllable silicon SCR control utmost point and the negative pole, the elementary L of the other end contact fire coil (5) of capacitor C ₃, inferior utmost point L ₄Connecting end, the elementary L of spark coil (5) ₃Another termination negative pole, the inferior utmost point L of spark coil (5) ₄Connect spark plug (8), controller iron core (1) upper and lower part respectively is provided with arc, has 2 grooves that cause not of uniform size on the arc of top, charge coil L ₁Be wound on a side of vat, a side of sulculus is wound with trigger winding L ₂, have the central authorities that rectangular magnet steel (3) is installed in left and right utmost point piece (2).

2, diesel rock frill electronic ignition device according to claim 1 is characterized in that: controller iron core (1) adopts after the folded riveting and control unit constitutes an integral installation on the chassis (6) of complete machine.

3, diesel rock frill electronic ignition device according to claim 1 is characterized in that: left and right utmost point piece (2) iron core and magnet steel (3) are installed in flywheel (4) one sides of complete machine, and the antimere of flywheel (4) is provided with equilibrate counterweight (7).

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