Railway signal relay magnetic circuit assembly with magnetic steel

Abstract

The invention discloses a railway signal relay magnetic circuit assembly with magnetic steel, and relates to the technical field of railway signal relays, the railway signal relay magnetic circuit assembly comprises a yoke, an armature, an iron core and a coil, the lower part of one end of the yoke is fixed at one end of the iron core, the armature is crimped above the other end of the yoke through a rotating shaft fixing frame, and the lower part of the armature is arranged outside the other end of the iron core; a balancing weight is fixedly arranged on the inner side of the upper portion of the armature, a fixing groove is jointly formed in the upper surface of the balancing weight and the inner side surface of the armature, fixed magnetic steel is installed in the fixing groove, an installation groove is formed in the upper surface of the yoke, a movable soft magnet is arranged in the installation groove, and the movable soft magnet and the fixed magnetic steel can attract each other. According to the railway signal relay, the fixed magnetic steel and the movable soft magnet attract each other to provide initial holding force for the railway signal relay, so that the relay can still work normally at different inclination angles, and the working stability and reliability of the relay are improved.

Description

Technical Field

[0001] The invention relates to the technical field of railway signal relays, in particular to a railway signal relay magnetic circuit component with magnetic steel. Background Art

[0002] At present, various types of railway signal relays are widely used in railway and urban rail signal control systems. This product consists of two major parts: a magnetic circuit component and a contact component. The magnetic circuit of the relay consists of an iron core, a yoke, and an armature to form a closed magnetic circuit. When the relay coil is powered on, a magnetic field is generated inside the coil under the influence of the coil current. The magnetic circuit is magnetized by the magnetic field generated inside the relay coil. Under the action of the magnetic field inside the coil, an electromagnetic force is generated in the iron core, and the electromagnetic force attracts the armature to drive the pull rod to move. For example, in the patent with the announcement number CN220189522U, a railway signal rectifier relay magnetic circuit excitation device is disclosed, including an iron core, a first coil, a diode, a second coil, a retaining spring, an armature, a nut set, and a yoke; the first coil, the second coil, and the yoke are sequentially sleeved on the iron core from right to left, and the yoke and the iron core are locked at the left end with the nut set; the first coil is a short-circuit coil, and a diode is connected between the beginning and the end of the winding of the first coil; However, the existing railway signal safety relay uses gravity as the relay reaction force so that it can switch after power is off. When the relay is tilted about 45° to the left, right or forward, the electrical characteristics change significantly. When it is tilted more than 90° to the left, right or forward, the railway signal relay fails. The reason is that the railway signal relay has no initial holding force, which makes the railway signal relay more sensitive to gravity. When the direction of gravity acting on the railway signal relay changes, the railway signal relay is difficult to switch or even cannot complete the switch; and the armature in the existing railway signal safety relay will change its angle after being baked. When the angle of the armature changes, the effective adsorption distance of the iron core will be longer, resulting in a larger magnetic gap of the relay, thereby reducing the sensitivity of the armature and changing the electrical characteristics of the existing railway signal safety relay. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a railway signal relay magnetic circuit assembly with magnetic steel. In view of the problems that the existing railway signal safety relays fail when the force direction changes and the electrical characteristics change greatly after baking, the present invention proposes a railway signal relay magnetic circuit assembly with magnetic steel, so that the relay can still maintain normal operation when the gravity changes relative to the direction of the relay due to tilting, falling, etc. during use, and the change in electrical characteristics after baking is reduced, thereby greatly reducing the sensitivity of the relay to gravity and improving the reliability of the relay during use.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: a railway signal relay magnetic circuit assembly with magnetic steel, including a yoke, an armature, an iron core and a coil, wherein the lower end of the yoke is fixed to one end of the iron core, the armature is crimped onto the upper end of the other end of the yoke through a rotating shaft fixing frame, the lower end of the armature is placed on the outer side of the other end of the iron core, a counterweight block is fixedly arranged on the inner side above the armature, a fixing groove is jointly provided on the upper surface of the counterweight block and the inner surface of the armature, a fixed magnetic steel is installed in the fixing groove, an installation groove is provided on the upper surface of the yoke, a movable soft magnet is arranged in the installation groove, the movable soft magnet and the fixed magnetic steel can be attracted to each other, and the movable soft magnet can be fixed in the installation groove after position adjustment.

[0005] Preferably, a yoke stopper is fixedly provided on the upper surface of the yoke, and after the counterweight block contacts the yoke stopper, the lower surface of the counterweight block can contact the upper surface of the yoke stopper in the form of area contact.

[0006] Preferably, an armature stopper is fixedly provided on a surface of the armature on one side close to the iron core.

[0007] Preferably, the regulating magnetic valve is fixed in the mounting groove by using potting glue.

[0008] Preferably, the counterweight block is composed of a plurality of weight plates, which are fixed to the armature by rivets, and a plurality of layers of weight plates close to one side of the armature are provided with through holes, which form fixing grooves in the counterweight block.

[0009] The present invention provides a railway signal relay magnetic circuit assembly with magnetic steel, which has the following beneficial effects: 1. The present invention can provide an initial holding force for a railway signal relay by attracting the fixed magnetic steel and the movable soft magnetic, so that the relay can still work normally at different tilt angles, thereby improving the working stability and reliability of the relay. The suction strength of the fixed magnetic steel and the movable soft magnetic can be adjusted by adjusting the position of the movable soft magnetic in the installation groove. The lower surface of the counterweight block and the upper surface of the yoke stopper can be made to contact in the form of surface contact by providing a yoke stopper, thereby avoiding direct collision between the counterweight and the yoke surface, reducing the change in the angle between the yoke and the armature, and at the same time limiting the armature when it is powered off by the height of the yoke stopper, thereby reducing the position change of the armature when it is powered off under long-term working conditions, thereby ensuring the consistency of electrical characteristics under long-term working conditions; 2. The existing railway signal safety relay armature still has the problem of angle change after baking. When the armature angle changes after baking, the distance between the active soft magnet and the fixed magnetic steel is adjusted by translating the active soft magnet, so as to compensate for the change in electrical characteristics caused by the relay baking. Compared with the traditional relay adjustment method that needs to adjust the armature angle, a new debugging method is added to the debugging method of adjusting the armature angle. The new debugging method can effectively reduce the change in the armature angle, thereby reducing the change in electrical characteristics after baking; 3. By adjusting the position of the active soft magnetic in the installation slot, the initial holding force of the relay reaction force curve can be increased or decreased, and a new debugging method is added. By combining the new debugging method with the old method, the debugging efficiency of the railway signal relay can be effectively improved; 4. After adjusting the active soft magnet to the appropriate position, fix the position of the active soft magnet by potting glue. If degradation occurs during the use of the railway signal relay, the potting glue can be removed by physical or chemical means and the railway signal relay can be debugged again. This method can be used to repair the railway signal relay, saving loss costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 A perspective view of the present invention; Figure 2 It is a front view of the present invention; Figure 3 It is a schematic diagram of the internal structure of the present invention; Figure 4 The three-dimensional explosion of the present invention Figure 1 ; Figure 5 The three-dimensional explosion of the present invention Figure 2 .

[0011] In the figure: 1. yoke; 2. armature; 3. iron core; 4. coil; 5. counterweight; 6. fixing groove; 7. fixed magnetic steel; 8. mounting groove; 9. movable soft magnet; 10. rotating shaft fixing frame; 11. yoke stopper; 12. armature stopper. DETAILED DESCRIPTION

[0012] The technical scheme in the embodiment of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiment of the present invention, wherein the directional nouns such as "upper", "lower", etc. mentioned herein are as follows: Figure 2 The orientation is used as a reference.

[0013] See also Figure 1-Figure 5The present invention provides a technical solution: a railway signal relay magnetic circuit component with magnetic steel, comprising a yoke 1, an armature 2, an iron core 3 and a coil 4, wherein one end of the yoke 1 is fixed to one end of the iron core 3 below, the armature 2 is crimped to the other end of the yoke 1 above through a rotating shaft fixing frame 10, the armature 2 is placed below the other end of the iron core 3 on the outside, a counterweight 5 is fixedly arranged on the inner side above the armature 2, a fixing groove 6 is jointly provided on the upper surface of the counterweight 5 and the inner surface of the armature 2, a fixed magnetic steel 7 is installed in the fixing groove 6, an installation groove 8 is provided on the upper surface of the yoke 1, an active soft magnet 9 is provided in the installation groove 8, the active soft magnet 9 and the fixed magnetic steel 7 can be attracted to each other, and can provide an initial holding force for the railway signal relay, the active soft magnet 9 can be fixed in the installation groove 8 after position adjustment, and the suction strength of the fixed magnetic steel 7 and the active soft magnet 9 can be adjusted by adjusting the position of the active soft magnet 9 in the installation groove 8.

[0014] As an embodiment of the present invention, a yoke stop plate 11 is fixedly provided on the upper surface of the yoke 1. After the counterweight 5 contacts the yoke stop plate 11, the lower surface of the counterweight 5 can contact the upper surface of the yoke stop plate 11 in the form of surface contact, thereby avoiding direct collision between the counterweight and the yoke surface and reducing the change in the angle between the yoke 1 and the armature 2.

[0015] As an embodiment of the present invention, an armature stopper 12 is fixedly provided on a surface of the armature 2 close to the iron core 3 .

[0016] As an embodiment of the present invention, the regulating magnetic valve is fixed in the mounting groove 8 by using a potting glue, and the potting glue can be removed by physical or chemical means to facilitate secondary adjustment.

[0017] As an embodiment of the present invention, the counterweight block 5 is composed of a plurality of weight plates, which are fixed to the armature 2 by rivets. Several layers of weight plates close to one side of the armature 2 are provided with through holes, which form a fixing groove 6 in the counterweight block 5.

[0018] Working principle of the present invention: The present invention sets a fixed magnetic steel 7 on the armature 2 and sets a movable soft magnetic 9 on the yoke 1. The mutual attraction between the two can provide an initial holding force for the railway signal relay, so that the relay can still work normally at different tilt angles, thereby improving the working stability and reliability of the relay; by changing the position of the movable soft magnetic 9 in the installation groove 8, the relative distance between the movable soft magnetic 9 and the fixed magnetic steel 7 can be increased or decreased, so that the time attraction between the two changes; by providing a yoke stopper 11, the lower surface of the counterweight block 5 and the upper surface of the yoke stopper 11 can be made to be close to each other. The surfaces are in contact with each other in the form of surface contact, so as to avoid direct collision between the counterweight plate and the yoke surface, reduce the change of the angle between the yoke 1 and the armature 2, and at the same time, the armature 2 is limited by the height of the yoke stopper 11 when the power is off, so as to reduce the position change of the armature 2 when the power is off under long-term working conditions, and ensure the consistency of the electrical characteristics under long-term working conditions; for the existing railway signal safety relay armature still has the problem of angle change after baking, when the angle of the armature 2 becomes larger and the suction force of the iron core 3 becomes smaller, increasing the distance between the active soft magnetic 9 and the fixed magnetic steel 7 can reduce The suction force between the two is low, thereby reducing the initial holding force, so that the iron core 3 can still adsorb the armature 2 under a small suction force, and when the angle of the armature 2 changes after baking, the distance between the active soft magnet 9 and the fixed magnetic steel 7 is adjusted by translating the active soft magnet 9, so as to compensate for the change in electrical characteristics caused by the baking of the relay. Compared with the traditional relay that needs to adjust the angle of the armature 2, a new debugging method is added to the debugging method of adjusting the angle of the armature 2. The new debugging method can effectively reduce the change in the angle of the armature 2, thereby reducing the change in electrical characteristics after baking, thereby reducing the rebound generated by the angle of the armature 2 and the angle of the yoke 1 after baking, thereby reducing the change in electrical characteristics before and after baking, which can effectively improve the debugging efficiency of the railway signal relay; after adjusting the active soft magnet 9 to a suitable position, the position of the active soft magnet 9 is fixed by potting glue. If degradation occurs during the use of the railway signal relay, the potting glue can be removed by physical or chemical means and the railway signal relay can be debugged again. The railway signal relay can be repaired by this method, saving loss costs.

[0019] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A railway signal relay magnetic circuit assembly with magnetic steel, comprising a yoke (1), an armature (2), an iron core (3) and a coil (4), characterized in that: The lower part of one end of the yoke (1) is fixed to one end of the iron core (3); the armature (2) is pressed onto the upper part of the other end of the yoke (1) through a rotating shaft fixing frame (10); the lower part of the armature (2) is placed on the outer side of the other end of the iron core (3); a counterweight (5) is fixedly arranged on the inner side of the upper part of the armature (2); a fixing groove (6) is provided on the upper surface of the counterweight (5) and the inner surface of the armature (2); a fixed magnetic steel (7) is installed in the fixing groove (6); an installation groove (8) is provided on the upper surface of the yoke (1); a movable soft magnetic steel (9) is arranged in the installation groove (8); the movable soft magnetic steel (9) and the fixed magnetic steel (7) can be attracted to each other; the movable soft magnetic steel (9) can be fixed in the installation groove (8) after the position is adjusted.

2. A railway signal relay magnetic circuit assembly with magnetic steel according to claim 1, characterized in that: A yoke stopper (11) is also fixedly provided on the upper surface of the yoke (1), and after the counterweight (5) contacts the yoke (1) stopper, the lower surface of the counterweight (5) can contact the upper surface of the yoke stopper (11) in the form of area contact.

3. A railway signal relay magnetic circuit assembly with magnetic steel according to claim 1, characterized in that: An armature stopper (12) is fixedly arranged on a surface of one side of the armature (2) close to the iron core (3).

4. A railway signal relay magnetic circuit assembly with magnetic steel according to claim 1, characterized in that: The regulating magnetic valve is fixed in the mounting groove (8) by using potting glue.

5. A railway signal relay magnetic circuit assembly with magnetic steel according to claim 1, characterized in that: The counterweight block (5) is composed of a plurality of weight plates, which are fixed to the armature (2) by rivets. A plurality of layers of weight plates close to one side of the armature (2) are provided with through holes, which form fixed grooves (6) in the counterweight block (5).

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