DE1050881B - Device for electric mine detonators to ensure a sufficient ignition current for the ignition - Google Patents

Description

GERMAN MMfH ^ PATENT OFFICE

kl.21 dl ' \

INTERNAT. KL. H 02 k

EXPLAINING PAPER 1050 881 Sch 23782 VIIIb / 2Id ¹

REGISTRATION DATE: MARCH 26, 1958

NOTICE "

DERREGÜNDÜNG

AND ISSUE OF THE

EDITORIAL: FEBRUARY 19, 1959

The invention relates to a device for electric mine detonators for securing a sufficient ignition current for ignition. With manually operated dynamo-electric mine detonators depends on the angular velocity given to the rotor during operation and thus the one generated Tension from the individually different physical performance and skill of the operator Person. About the safe removal of explosive shots connected to such a machine To ensure this is equipped with a device, which the occurrence of a voltage on the Terminals automatically prevented when this voltage falls below a minimum value, the one A sufficient ignition pulse is guaranteed for triggering. Established institutions serving this purpose contain a blocking device which has an ignition current switch contact for the current circuit only releases when the magnetic field of the blasting machine has sufficient strength for reliable ignition Has. The blocking device consists of a locking bolt controlled by the drive mechanism and one protruding in its movement path under the influence of the magnetic field of the blasting machine retractable inhibitor, either as a slidably mounted bolt or as a pivotable one Lever is formed. Under the atmospheric and rough operating conditions, under which a blasting machine must be usable arise from the leadership of the bolt or the storage of the levers difficulties that a safe function of equipped with such inhibiting organs Affect facilities. ' can. First and foremost is the ingress of small foreign bodies and not to be permanently excluded from moist air with a reasonable construction effort, so that jamming or icing can occur.

It is the aim of the invention to remedy these deficiencies and a device for ensuring a sufficient To create ignition current that function reliably even under harsh operating conditions guaranteed under the influence of the small forces that can be derived from the magnetic field of the machine.

This goal can be achieved if the retractable inhibitor under the influence of the magnetic field according to the invention as a latch catch arranged on a leaf spring clamped at least on one side designed for a locking bolt controlled by the drive mechanism and an adjusting device for the leaf spring is assigned, which is an adjustment of the at least partially exerted by the spring, the pulling back of the bolt catcher allows counteracting force. It's beneficial.

IO

Facility

for electric mine detonators

to secure one for the ignition

sufficient ignition current

Applicant: Schaffler & Co., Vienna

Representative: Dr. phil. A. Mentzel, patent attorney, Refrath near Cologne, Frankenforst 137

Claimed priority: Austria of April 17, 1957

25th

to provide an armature on this bolt catcher leaf spring that connects to the magnetic field iron of the ignition dynamo magnetically conductively connected pole faces. This locking pole can be made hollow

and take up an adjustment spring.

The invention is explained in more detail below with reference to the drawing, which is shown schematically in more detail Representation of an example embodiment of a device according to the invention on a

for manual actuation from certain blasting machine shows. This results in further features of the invention.

The blasting machine shown has a removable Drive handle 1, a drive shaft 2 and

a drive segment 4 which is connected to the housing and to the drive shaft in a rotationally fixed manner via a return spring 3 and which has a drive pinion 25 meshes with the armature shaft of the ignition dynamo. To be taken along via a on the drive shaft 2

seen driver pin 5 is preferably from Insulating material existing control disk 6 coupled, which on its upper side has a segment-shaped Recess for the driver pin15 on the other (lower) side a recess for a second

Driver pin 8 has. This pin 8 is by a spring 7 (clockwise) against the one surface pulled the lower recess and sits eccentrically in a rotatably mounted insulating washer 9, which has a locking finger 10 with a locking stop 10a

Claims (5)

having. This insulating washer also carries a counterclockwise one. After a rotation about essentially U-shaped contact spring 11, about 120 °, the control disk 6 and thus the legs thereof are inevitably entrained, one each on a contact path carrier contact system. The one 12 arranged Kontaktbähri 13 'or. 14 assigned. 'End of the U-shaped contact spring 11 versind. The contact track 14 is connected to one of these contact tracks 14, and the terminals are connected to one pole of the ignition dynamo, while the voltage is off. At this point in time, the contact track 13 is also connected to a terminal of the ignition drive mechanism of the ignition machine in its riveting machine; The other clamp has returned to its starting position. switched to the second pole of the ignition dynamo. With the help of the adjustable bolt catcher adjustment spring path of the bolt stop 10 a and from this back, the minimum tension can be set, which can be pulled out there is a bolt catcher 15 which can reach the terminals of the machine. In order to prevent the bolt catcher anchor from sticking to the bolt — the other end of which is seated with a fastening plate 19 pol with a fastening plate 19 pol, it is advantageous to use the two one, for example. B. connected by spot welding and with this on opposite sides of these two need screws 20 on the magnet frame of the ignition component to be designed so that a flat dynamo is attached. This mounting plate does not move. It is sufficient to prevent the occurrence of a hole embedment on the purpose, for example the bolt anchor as a wedge with holes of the thin spring, which form when the small suit hits. Bolt stop on the bolt catcher on train loaded with devices according to the invention is addressed. The bolt catcher leaf spring 17 on 20 machines is protected against ice and in every position its side facing away from the bolt catcher is protected by a support on the clamps that extends against the occurrence of insufficient ignition voltages against the attached end. Reinforced enclosure 18 and carries a bolt catcher anchor 16 which can be directly opposite the bolt catcher. Opposite the bolt catcher armature is a bolt pole 21 which is magnetically conductively connected to the magnetic field iron 24 of the ignition dynamo and which is preferably hollow and which receives a bolt catcher adjusting spring 22. One end of this spring is supported against a shoulder of an adjusting screw 23 with a centering shoulder, which can be screwed into the locking pole and can be adjusted, while the other end protruding from the cavity of the locking pole 21 presses against the locking anchor. It is advantageous to provide the locking anchor with a recess which can accommodate this end of the adjusting spring. The mode of operation of this device is as follows: If the drive handle 1 is rotated clockwise, the drive pin 2 and the driver, pin 5, rotate freely with this for the time being. After a rotation of about 120 °, the driver pin comes to rest on one edge of the upper recess of the control disk 6 and takes it with it. The driver pin 8, the insulating washer 9 and the locking finger 10 connected to it are then elastically entrained via the spring 7, which consequently arrives in front of the bolt catcher 15. With the rotation of the handle 1, however, the rotor of the ignition dynamo is set in rotation via the drive segment 4 and the pinion 25 and a magnetic field is excited in the field iron 24, which exerts an attractive force on the locking armature 16 via the locking pole 21. If the handle is rotated sufficiently quickly, the attraction force acting on the bolt catcher anchor against the action of the bolt catcher leaf spring 17 and the bolt spring adjusting spring 22 is sufficient to pull the bolt catcher out of the path of the bolt stop 10 α. Only in this case is the path for the locking finger released so that one resilient end of the contact spring 11 can slide onto the associated contact track 14 so that the ignition voltage generated, which in this case is sufficient, reaches the terminals of the ignition machine. When the drive pin is reset with the aid of the return spring 3, it first moves freely P α τ l; ν τ λ χ spkpche; 1. Device for electric mine detonators to secure a sufficient for the ignition Ignition current, consequently an ignition current holding contact by a blocking device for the current short is only released when the magnetic field of the machine is that for the safe Ignition has attained sufficient strength, the blocking device from one of the drive mechanism controlled locking bolt and one protruding in its trajectory, under the influence The. Magnetic field of the machine retractable inhibitor consists, characterized by one designed as a bolt catcher (15) on a leaf spring (17) clamped at least on one side arranged inhibitor and an adjusting device cooperating with the leaf spring for Adjustment of the at least partially exercised by the leaf spring, the retraction of the bolt catcher counteracting force. 2. Device according to claim 1, characterized by a bolt catcher anchor arranged on the leaf spring (16) and one facing it, with the magnetic field iron of the ignition dynamo magnetically conductively connected locking pole (21). 3. Device according to claim 1 or 2, characterized by an adjusting device with a against the leaf spring pressing, adjustable latch catcher adjustment spring (22), which is preferably in the hollow locking pole (21) is housed. 4. Device according to one of claims 1 to 3, characterized by a clamped against the End of the bolt catcher leaf spring (17) extending support insert (18). 5. Device according to claim 3 or 4, characterized by a recess in the bolt catcher anchor (16) for receiving the end of the bolt catcher adjusting spring which is supported against this (22). Considered publications:
German patent specification No. 703 790. 1 sheet of drawings © 809 750/222 2.59