DE102019109654B3 - Actuator and electromagnetic spring pressure dual-circuit brake - Google Patents

Abstract

The invention relates to an actuating device (2) of an electromagnetic spring pressure dual circuit brake (1) with two brake circuits (40, 41) arranged in mirror image to the excitation system, each with an armature (45, 46), comprising a first actuating means (10) and a second actuating means (20) and an actuating bracket (30), the two actuating means (10, 20) being arranged at a distance (A) and each being coupled to one another by means of the actuating bracket (30) and a connecting means (11, 21) in such a way that a pivoting movement of the actuating bracket (30) changes the distance (A) between the actuating means (10, 20). The present invention also relates to an electromagnetic spring pressure dual circuit brake (1).

Description

The present invention relates to an actuating device of an electromagnetic spring pressure dual-circuit brake with two brake circuits arranged in mirror image to the excitation system, each having an armature with the features of claim 1, and to an electromagnetic spring pressure dual circuit brake with two brake circuits arranged in mirror image to the excitation system with such an actuating device with the features of the patent claim 14th

Actuating devices for electromagnetic spring pressure brakes are known in various configurations from the prior art and are used for manual bleeding or manual closing of a spring pressure brake against the spring force of a compression spring.

Such actuators are for example from the DE 10 2004 032 388 A1 . WO 2018/229 359 A1 . DE 10 2011 011 231 B4 or the DE 10 2008 058 865 A1 previously known and each have a mechanical, optionally retrofittable actuating device for manual opening and closing of electromagnetic spring pressure brakes. The actuating device is often also referred to as manual release and typically comprises an actuating means and an actuating bracket, the actuating means being able to be brought into active contact with an axially movable armature and the spring pressure brake exerting a force on the armature of the spring pressure brake by pivoting the actuating bracket and a linkage manual opening or closing.

It has been found to be disadvantageous in this prior art that the actuating devices known from the prior art are not suitable for spring-loaded dual-circuit brakes, or that the manual opening or closing of spring-loaded dual-circuit brakes is complex and requires additional mechanical components.

From the EP 1 001 508 A2 An actuating device of an electromagnetic spring pressure dual-circuit brake is previously known. The actuating device has an actuating bracket on which a first pin-shaped actuating means engages in a first armature of the spring-loaded dual-circuit brake and a second pin-shaped actuating means engages in a second armature of the spring-loaded dual-circuit brake. The second pin-shaped actuating means is connected to the actuating bracket by means of a connecting means.

Another actuator is from the JP 2001-124116 A previously known which also has an actuating bracket, on which a first pin-shaped actuating means and a second pin-shaped actuating means are provided, each of which engages in the armature of the spring pressure dual-circuit brake.

From the DD 121 629 A1 A linkage for actuating a drum brake is previously known, the linkage being actuated by compressed air using a spring cylinder.

In this prior art, it has proven to be disadvantageous that, if necessary, the actuating device can only be engaged in a complex manner with the armatures of the spring pressure dual-circuit brake.

This is where the present invention comes in.

It is the object of the present invention to provide an improved actuation device, in particular for an electromagnetic spring pressure dual-circuit brake with brake circuits arranged in mirror image, which expediently improves the actuation devices known from the prior art and is easy to use.

In addition, it is the object of the present invention to provide an actuating device which is formed from a very small number of components which can be produced inexpensively and which has an improved cost profile compared to the previously known solutions.

These objects are achieved by the actuating device according to the invention with the features of claim 1 and the electromagnetic spring pressure dual-circuit brake with two brake circuits arranged in mirror image to the excitation system with the features of claim 14.

Further advantageous refinements of the invention are specified in the subclaims.

The actuating device according to the invention with the features of patent claim 1 of an electromagnetic spring pressure double-circuit brake with two brake circuits arranged in mirror image to the excitation system, each with an armature, comprises a first actuating means, a second actuating means and an actuating bracket. According to the invention, it is provided that the two actuating means are at a distance A are arranged at a distance from one another and are coupled to one another by means of the actuating bracket by means of a connecting means in each case such that the distance is caused by a pivoting movement of the actuating bracket A between the actuating means is changeable. Here and in the following, an actuating means is understood to mean a rigid and preferably essentially plate-shaped component which is designed to be brought into operative connection with the armature of the respective brake circuit and an infeed movement generated by pivoting the actuating bracket on the respective armature for opening or closing to transfer the spring pressure dual-circuit brake.

The first actuation means and the second actuation means are preferably arranged essentially parallel and at a distance from one another.

According to an advantageous development of the present invention, the first actuating means is coupled to the first connecting means in a first plane perpendicular to the first actuating means with the actuating bracket and the second actuating means with the second connecting means in a second plane parallel and spaced apart from the first level with the actuating bracket coupled. Due to the distance between the first level and the second level, a feed movement of the actuating bracket can change the distance A be converted between the first actuator and the second actuator.

A further advantageous embodiment of the present invention provides that at least one of the connecting means forms an axis of rotation about which the actuating bracket can be pivoted. Accordingly, the first connecting means, which couples the actuating bracket to the first actuating means, or the second connecting means, which couples the actuating bracket to the second actuating means, can be designed as an axis of rotation about which the actuating bracket can be pivoted and projects in a lever direction.

A further advantageous embodiment of the present invention provides for at least one of the connecting means to be guided in a guide recess, in particular a guide groove or a bore. By guiding in a guide recess, the distance can be reduced or increased by pivoting the actuating bracket between the two actuating means, whereby a displacement in a plane perpendicular to the first plane and / or second plane can be prevented.

It is particularly preferred if the actuating bracket projects in a lever direction about an axis of rotation and the guide recess is approximately parallel to the lever direction. The guide recess can either be molded or worked into a spacer or into the actuating bracket.

According to a further advantageous embodiment of the present invention, at least one of the actuating means can be designed as an actuating plate and further preferably has a recess, through which the actuating plate is U-shaped or arched for gripping around the armature of the respective excitation circuit. In particular, it is preferred if the recess corresponds to the shape of a contact surface of the armature, as a result of which the actuating means, which is designed as an actuating plate, can be brought into active contact with the armature as far as possible to introduce an actuating force.

It has also proven to be advantageous if at least one finger projects into the at least one recess. In particular, it is preferred if the recess and the at least one finger are formed symmetrically on the first actuation means and / or the second actuation means. The respective finger is set up to engage in a recess in the armature in order to form a tilting protection for the actuating device on the spring pressure dual-circuit brake.

In addition, it has proven to be advantageous if the first actuating means and / or the second actuating means each comprise or comprises at least one spacer which is coupled to the actuating bracket by means of the respective connecting means. The spacer (s) give the distance A between the first actuator and the second actuator in the unactuated state of the actuator.

Furthermore, it has proven to be advantageous if the at least one spacer with the respective actuating means e.g. is screwed, riveted or cohesively connected or is formed in one piece from the actuating means.

According to a further advantageous embodiment of the present invention, the respective connecting means is a bolt, a screw or a shoulder fitting screw, a fitting screw with a shoulder or the like. In particular shoulder shoulder screws are preferred because the shoulder shoulder screws have a thread on the one hand to form a fixed connection between the first actuating means or spacer and / or the second actuating means or spacer and, moreover, an attachment which is suitable on the one hand to form an axis of rotation and on the other hand to guide the connecting means in a guide groove.

It has also proven to be advantageous if the actuating bracket overlaps the actuating means to form a lever. In particular, it is preferred if the operating bracket Actuating means for forming the lever overlaps many times, preferably the actuating bracket in a lever direction from the axis of rotation by the distance A1 protrudes so that the distance A1 a multiple of the distance A2 corresponds to the first level and the second level in order to provide a sufficient and not too high actuating force for manual opening or closing of the spring pressure dual-circuit brake against a spring force.

In accordance with a further advantageous embodiment of the present invention, the respective spacer and the respective actuating means are identical in construction. This has the particular advantage that the cost profile of the proposed actuating device is particularly favorable.

Furthermore, it has proven to be advantageous if the first actuation means, the second actuation means and the spacers in at least one plane perpendicular to the first plane E1 are mirror-symmetrical. Due to the mirror-symmetrical design, on the one hand the assembly effort of the actuating device according to the invention is reduced and, on the other hand, the positioning of the actuating device on the spring pressure dual-circuit brake can take place independently of the direction.

In accordance with a further advantageous embodiment of the present invention, the actuating means and / or the spacers are designed geometrically such that when the actuating means or the actuating device is inserted or mounted in the electromagnetic spring pressure dual-circuit brake, a constant, repeatable insertion position is achieved. For this purpose, the fastening means, in particular the recess of the fastening means or the fingers in the recess of the fastening means, can have correspondingly shaped surfaces which lead to self-centering when inserted or assembled. It is particularly preferred if the recess and / or the at least one finger in the recess has a rounding or is at least partially wedge-shaped.
Another aspect of the present invention relates to an electromagnetic spring-loaded dual-circuit brake with two brake circuits arranged in mirror image of the excitation system, the respective brake circuit having an electromagnetically actuable armature which can be moved against a spring force, and an actuating device according to the invention, the first actuating means and the second Actuating means for manual opening or closing of the spring-loaded dual-circuit brake can be brought into active contact with an armature.

Furthermore, it has proven to be advantageous if the first actuation means and the second actuation means each encompass one armature of the respective brake circuit. It is particularly preferred if the first actuating means and / or the second actuating means encompasses a contact surface or is in a form-fitting manner at least in regions against a stop surface on the respective armature, and to exert a force to open or close the spring-loaded dual-circuit brake on the armature as far as possible.

According to a further embodiment of the present invention, it is advantageous if at least one recess is provided in the armature, in particular on the contact surface, into which the at least one finger projecting into the recess can engage in order to secure the actuating device against tipping. Furthermore, it is preferred if the at least one recess corresponds to the shape of the at least one finger to form a positive fit.

• 1 eine perspektivische Darstellung der erfindungsgemäßen Betätigungseinrichtung, aufweisend ein erstes Betätigungsmittel und ein zweites Betätigungsmittel, wobei das erste Betätigungsmittel und das zweite Betätigungsmittel durch ein Verbindungsmittel mit einem Betätigungsbügel gekoppelt sind,
• 2 eine erste Seitenansicht der Betätigungseinrichtung gemäß 1,
• 3 eine vergrößerte Detaildarstellung gemäß 2,
• 4 eine zweite Seitenansicht der Betätigungseinrichtung gemäß den 1 und 2, und
• 5 eine Seitenansicht einer erfindungsgemäßen elektromagnetischen Federdruck-Zweikreisbremse mit der erfindungsgemäßen Betätigungseinrichtung.

An exemplary embodiment according to the invention is explained in detail below with reference to the accompanying drawings. Show it:

• 1 2 shows a perspective illustration of the actuating device according to the invention, comprising a first actuating means and a second actuating means, the first actuating means and the second actuating means being coupled to an actuating bracket by a connecting means,
• 2 a first side view of the actuator according to 1 .
• 3 an enlarged detail view according to 2 .
• 4 a second side view of the actuator according to the 1 and 2 , and
• 5 a side view of an electromagnetic spring pressure dual-circuit brake according to the invention with the actuating device according to the invention.

The 1 to 4 show an exemplary embodiment of an actuator 2 , The actuator 2 comprises a first actuating means 10 , a second actuator 20 and an operating bracket 30 , the first actuating means 10 and the second actuator 20 at a distance A are preferably arranged parallel and spaced apart.
The first actuator 10 and the second actuator 20 can - as shown in the illustrated embodiment - be designed as a first actuating plate and a second actuating plate, the respective actuating plate being a rigid one and is plate-shaped component, which is preferably made of a metal.

The first actuator 10 and the second actuator 20 are structurally identical and are also preferably mirror-symmetrical and each have a recess 14 . 24 through which the first actuating means 10 and the second actuator 20 have a U-shaped or bow-shaped shape.

In the respective recess 14 . 24 protrude two fingers 16 . 26 being the fingers 16 . 26 also symmetrical in the recess 14 . 24 can be arranged. Accordingly, the first actuating means 10 and the second actuator 20 for an in 2 drawn symmetry plane S mirror or line symmetrical.

The finger 16 . 26 can be designed wedge-shaped at one free end, the wedge-shaped free ends of the fingers 16 . 26 when installing or inserting the first actuating means 10 and the second actuating means 20 the respective actuating means 10 . 20 Center on the electromagnetic spring pressure dual-circuit brake, whereby a constant, repeatable insertion position can be achieved. Also, the areas that are adjacent to the fingers 16 . 26 in the respective recess 14 . 24 are formed, be formed accordingly by rounding or tapering surfaces in order to realize self-centering.

Furthermore, the first actuating means 10 and the second actuator 20 two end faces each 13a . 13b . 23a . 23b on, in the area of the respective end face 13a . 13b . 23a . 23b a spacer 12 . 22 in the direction of the respective other actuating means 10 . 20 protrudes and the respective actuating means 10 . 20 with the operating bracket 30 combines. The first actuator 10 is by means of a first connection means 11 with the operating bracket 30 operatively connected and the second actuating means 20 with a second connection means 21 with the operating bracket 30 operatively connected.

4 it can be seen in particular that the first connecting means 11 with the operating bracket 30 in a first level E1 is coupled. The first level E1 is perpendicular to a main plane of the first actuating means 10 arranged. The second lanyard 21 is with the operating bracket 30 in a second level E2 coupled, the second level E2 parallel and at a distance A2 spaced from the first level E1 is arranged. The distance A2 can be many times smaller than the distance A1 ,

The first actuator 10 or the spacer 12 is in an axis of rotation X by means of the first connecting means forming a swivel joint 11 with the operating bracket 30 connected, meanwhile, the second actuator 20 or the spacer 22 with the second connection means 21 with the operating bracket 30 is coupled such that when the actuating bracket pivots 30 about the axis of rotation X the distance A between the first actuator 10 and the second actuator 20 is enlarged or reduced. The second connecting means preferably engages 21 a guide recess 34 in the operating bracket 30 , The guide recess 34 can be designed as a guide groove or bore.

The guide recess 34 is that 3 to 5 can be removed particularly well and is designed for a pivoting movement about the axis of rotation X the distance A2 between the first level E1 and the second level E2 to keep almost constant, meanwhile the distance A between the first actuator 10 and the second actuator 20 for manual opening or closing of the electromagnetic spring pressure dual-circuit brake 1 is changed. For this purpose, the guide recess 34 approximately parallel to the main plane of the first actuating means 10 and / or the second actuating means 20 be arranged.
The operating bracket 30 overlaps the first actuating means 10 and the second actuator 20 and connects the opposite end faces 13a . 13b . 23a . 23b and thus forms a lever through which a large torque about the axis of rotation even when a small force is applied X is provided to the distance A between the first actuator 10 and the second actuator 20 to accomplish.

In the exemplary embodiment shown, the actuating bracket overlaps 30 so the two actuators 10 . 20 that the ratio of the distance A1 between the axis of rotation X and the free end of the operating bracket 30 and the distance A2 between the first level E1 and second level E2 in a ratio of approx. 25: 1, this ratio being arbitrary. The ratio is preferably greater than 10: 1.

5 shows a side view of an electromagnetic spring pressure dual-circuit brake according to the invention 1 with the actuator 2 ,

The spring pressure dual circuit brake 1 comprises two brake circuits arranged in mirror image of the excitation system 40 . 41 with one anchor each 45 . 46 the spring pressure dual-circuit brake when the excitation system is energized 1 either opens or closes against the spring force of a compression spring. The respective anchor 45 . 46 comprises one by the respective actuating means 10 . 20 hidden contact surface 48 . 49 , the first actuating means 10 in the contact area 48 engages and the second actuator 20 in the contact area 49 engages and an operative connection between the actuating means 10 . 20 and the respective anchor 45 . 46 is made. The respective contact surface can be designed as a pocket or receiving recess and corresponds to the shape of the actuating means 10 . 20 , A change in distance A between the first actuator 10 and the second actuator 20 by a pivoting movement of the operating bracket 30 about the axis of rotation X is achieved by the form fit between the contact surfaces 48 . 49 and the actuating means 10 . 20 on the anchor 45 . 46 transfer. For tilt-proof support of the actuating device 2 on the spring pressure dual circuit brake 1 grab your fingers 16 . 26 preferably positively in (not shown) recesses in the respective anchor 45 . 46 on.

LIST OF REFERENCE NUMBERS

1

Spring-dual circuit brake

2

actuator

10

first actuating means

11

first lanyard

12

Spacers (from 10 )

13a

Front (from 10 )

13b

Front (from 10 )

14

Recess (from 10 )

16

Finger (of 10 )

20

second actuating means

21

second connection means

22

Spacers (from 20 )

23a

Front (from 20 )

23b

Front (from 20 )

24

Recess (of 20 )

26

Fingers (from 20 )

30

actuating bow

34

guide recess

40

brake circuit

41

brake circuit

45

Anchor (from 40 )

46

Anchor (from 41 )

48

Contact area (from 40 )

49

Contact area (from 41 )

E1

level

E2

level

A

distance

A1

distance

A2

distance

X

axis of rotation

S

plane of symmetry

Claims (16)

Actuating device (2) of an electromagnetic spring pressure dual-circuit brake (1) with two brake circuits (40, 41) arranged in mirror image to the excitation system, each with an armature (45, 46), comprising: - a first actuating means (10), a second actuating means (20) and an actuating bracket (30), - The two actuating means (10, 20) are arranged at a distance (A) and are each coupled to one another by means of the actuating bracket (30) and a connecting means (11, 21) such that a pivoting movement of the actuating bracket (30) by one Axis of rotation X changes the distance (A) between the actuating means (10, 20). Actuator (2) after Claim 1 , characterized in that the first actuating means (10) is coupled to the first connecting means (11) in a first plane (E1) perpendicular to the first actuating means (10) with the actuating bracket (30), and in that the second actuating means (20) is coupled to the actuating bracket (30) with the second connecting means (21) in a second plane (E2) parallel and at a distance from the first plane (E1). Actuator (2) after Claim 1 or 2 , characterized in that at least one of the connecting means (11, 21) forms the axis of rotation (X) about which the actuating bracket (30) can be pivoted. Actuating device (2) according to one of the preceding claims, characterized in that at least one of the connecting means (11, 21) is guided in a guide recess (34). Actuating device (2) according to one of the preceding claims, characterized in that at least one of the actuating means (10, 20) is designed as an actuating plate and has a recess (14, 24) through which the actuating means (10, 20) is U-shaped or arcuate for gripping the armature (45, 46). Actuator (2) after Claim 5 , characterized in that at least one finger (16, 26) projects into the recess (14, 24). Actuating device (2) according to one of the preceding claims, characterized in that at least one of the actuating means (10, 20) comprises a spacer (12, 22). Actuator (2) after Claim 7 , characterized in that the spacer (12, 22) is screwed, riveted or integrally connected to the respective actuating means (10, 20) or is formed in one piece from the actuating means (10, 20). Actuating device (2) according to one of the preceding claims, characterized in that the respective connecting means (11, 21) comprises a bolt, a screw, a shoulder fitting screw or the like. Actuating device (2) according to one of the preceding claims, characterized in that the actuating bracket (30) engages over the actuating means (10, 20) to form a lever. Actuating device (2) according to one of the preceding claims, characterized in that the spacers (12, 22) and / or the actuating means (10, 20) and / or the connecting means (11, 21) are identical in construction. Actuating device (2) according to one of the preceding claims, characterized in that the actuating means (10, 20) and / or the spacers (12, 22) at least in one plane perpendicular to the first plane (E1) and / or the second plane ( E2) are mirror-symmetrical. Actuating device (2) according to one of the preceding claims, characterized in that the actuating means (10, 20) and / or the spacers (12, 22) are designed geometrically such that when the actuating means (10, 20) are inserted or mounted in the electromagnetic spring pressure dual-circuit brake (1) achieves a constant, repeatable insertion position. Electromagnetic spring pressure dual-circuit brake (1) with two brake circuits (40, 41) arranged in mirror image of the excitation system, the respective brake circuit (40, 41) having an armature (45, 46) that can be moved against a spring force, and an actuating device ( 2) according to one of the preceding claims, wherein the two actuating means (10, 20) can each be brought into operative contact with an armature (45, 46) for manual opening or closing of the spring pressure dual-circuit brake (1). Electromagnetic spring pressure dual circuit brake (1) after Claim 14 , characterized in that the respective armature (45, 46) has at least one contact surface (48, 49) in which the actuating means (10, 20) can interlock positively in some areas. Electromagnetic spring pressure dual circuit brake (1) after Claim 15 , characterized in that the contact surfaces (48, 49) have at least one recess into which the fingers (16, 26) can engage in order to secure the actuating device (2) against tipping.

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