Tachometer assembly for motor-mounted brake, motor-mounted brake, and drive assembly

Abstract

The invention relates to a tachometer assembly (1) for carrying a brake (40) of a motor, comprising: a stator part (5) operatively coupleable to a housing part (42) of the brake (40) of the motor; the invention relates to a rotor part (7) that can be coupled to a drive shaft (51) passing through a brake (40) carrying a motor, in which the stator part (5) comprises a stator body (11) having a base flange (13) having a housing-side centering collar (17) on the outer circumference thereof, and a connecting flange (15) for connecting the base flange (13) to the housing-side centering collar (17) on the outer circumference thereof. The connecting flange (15) adjoins the base flange (13) in an axially offset manner and forms an inner wall (19) on the inner circumference thereof, which inner wall together with the outer surface (21) of the base flange (13) forms a receiving space (23) for the rotor part (7), and the receiving space (23) is isolated from the outside environment by a cover (29) which can be fixed to the connecting flange (15).

Description

Technical Field

[0001] The present disclosure relates generally and more particularly to a tachometer assembly for a motor-mounted brake, and to a motor-mounted brake and drive assembly. Background Art

[0002] Tachometers that can be attached to motor-mounted brakes are generally known. These allow quick and simple braking of externally ventilated and internally ventilated motors, such as can be found, for example, in lifting devices on trolleys, trolley chassis and crane systems.

[0003] In particular, particularly compact motor-mounted brakes are used under harsh environmental conditions, since the actual functional elements of the brake can be effectively shielded from environmental influences by the cover.

[0004] Due to their compact design, these motor-mounted brakes are also suitable for use in particularly space-restricted installation situations.

[0005] Tachometer assemblies (tachometers or speed measuring devices) are used to monitor the operating standards of drives controlled by motor-mounted brakes and of the motor-mounted brakes themselves.

[0006] Figure 3 A tachometer assembly according to the prior art is shown. In this case, the actual tachometer 100 is connected to a housing part 120 of the actual motor-mounted brake 140 via an adapter assembly 110. Internally, the connection is made via a drive assembly, which is connected to the tachometer shaft within the adapter assembly 110. In this way, a secure connection of the tachometer 100 to the drive 150 of the motor-mounted brake 140 is ensured, but the tachometer assembly or the tachometer 100 itself protrudes significantly beyond the actual motor-mounted brake 140 and both a plurality of external adapter parts and a plurality of internal adapter parts are required in order to connect the tachometer 100 to the drive 150 of the motor-mounted brake 140. As a result, the assembly is complex to install, requires a relatively large amount of installation space and must be centered and oriented in a complex manner relative to the fixed and movable active elements of the motor-mounted brake 140.

[0007] A typical tachometer is connected to the housing part of the brake carrying the motor via an input shaft. For this purpose, the input shaft has a fastening device on its end facing away from the base plate and the electric motor, to which a further shaft (for example a motor shaft extending through the opening) can be fastened.

[0008] Most tachometers are actually speedometers in terms of the measuring principle. However, optical or capacitive sensors can be unreliable in harsh conditions, especially in the presence of condensation or dust. Summary of the invention

[0009] An object is to provide an improved tachometer assembly for a motor-mounted brake.

[0010] According to a first aspect, the present disclosure provides a tachometer assembly for a motor-mounted brake. The tachometer assembly comprises: a stator component, which can be connected to a housing component of the motor-mounted brake in operation; a rotor component, which can be connected to a motor shaft passing through the motor-mounted brake, wherein the stator component comprises a stator body, the stator body having a base flange and a connecting flange, the base flange having a housing-side centering collar on its outer periphery, the connecting flange adjoining the base flange in an axially offset manner and forming an inner wall on the inner periphery of the connecting flange, the inner wall together with the outer surface of the base flange forming a receiving space for the rotor component, and the receiving space is isolated from the external environment by a cover that can be fixed to the connecting flange.

[0011] Further aspects and features can be found in the dependent claims, the drawings and the following description of exemplary embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Embodiments will now be described by way of example with reference to the accompanying drawings, in which:

[0013] Figure 1 An external perspective view of a brake equipped with a motor on a drive device with a tachometer assembly according to the present invention is shown;

[0014] Figure 2 Shows Figure 1 A longitudinal cross-sectional view of the assembly shown, and

[0015] Figure 3 A perspective view of a motor mounted brake with a known tachometer assembly is shown. DETAILED DESCRIPTION

[0016] In reference Figure 1 Before describing the embodiments in detail, the embodiments are generally explained first.

[0017] The tachometer assembly according to the invention allows a design which is particularly compact and easy to install and can be arranged substantially or completely within the outer contour of the motor-mounted brake. As a result, virtually no additional installation space is required and there is no risk of damage to the tachometer assembly during operation (impact, shearing, etc.). Due to the compact, flat design, the tachometer assembly can also be easily replaced or retrofitted on existing motor-mounted brakes.

[0018] There are embodiments in which the rotor component can be coupled to the motor shaft via a driver which protrudes from the tachometer assembly through a driver opening arranged in the base flange and which, when the tachometer assembly is arranged on the housing component, extends into the interior of the housing component and can be coupled therein to the motor-mounted brake. In such embodiments, all components required for operating the tachometer assembly or for connecting the tachometer assembly to the motor-mounted brake are arranged to be optimally protected in the housing component of the motor-mounted brake itself.

[0019] There are embodiments in which the cover and the stator part can be coupled to the housing part by means of a common fastening element. In this way, existing connection holes (threaded holes in the housing part) can be used in order to couple the tachometer assembly itself via the stator part to the housing part of the motor-carrying brake, while at the same time also shielding the entire tachometer assembly or its interior from the external environment by means of the fixable cover.

[0020] There are embodiments in which the sealing arrangement between the stator part and the cover and between the stator part and the housing part seals both the receiving space and the interior of the housing part (in which the actual motor-mounted brake is arranged) from the external environment in a fluid-tight manner. Thus, both the tachometer assembly itself and the main elements of the motor-mounted brake are reliably sealed from environmental influences.

[0021] There are embodiments in which the cover consists of an electrically insulating material, so that the necessary tachometer components can also be effectively shielded from electrical influences.

[0022] There are embodiments in which the rotor part can be coupled to the drive via an element protruding into the receiving space. Thus, by suitable design of such a drive, the tachometer assembly can be adapted to different configurations and sizes of motor-mounted brakes. No actual adaptation of the elements of the motor-mounted brake is required.

[0023] There are embodiments in which the tachometer assembly acts as an electronic monitoring device which outputs a signal corresponding to an operating standard. Thus, not only the actual speed can be detected and monitored, but also conclusions can be drawn, for example, about the maintenance state of the drive assembly and / or the motor-carrying brake, for example, via speed changes in specific operating states. For example, signs of wear on a brake disc or brake pad or abnormal operating characteristics of the drive can thus be monitored and determined.

[0024] There are embodiments in which the receiving space is completely embedded in the housing part. In such an embodiment, the tachometer assembly disappears completely into the contour of the housing part of the motor-carrying brake. No additional installation space is required.

[0025] Another aspect of the invention relates to a motor-mounted brake having a housing part which is configured to receive a tachometer assembly according to the invention.

[0026] There is an embodiment in which the housing part of the motor-mounted brake is provided with a connection opening which corresponds to the centering collar of the stator part. As a result, the tachometer assembly can be particularly easily centered in the housing part and thus also arranged and fixed to the concentrically acting movable element of the motor-mounted brake.

[0027] Another aspect relates to a drive assembly having a motor-mounted brake according to the invention and a drive unit, for example an electric drive unit or an electric motor, which is coupled to the motor-mounted brake.

[0028] return Figure 1 , which illustrates an exemplary embodiment of a tachometer assembly 1 or a motor-mounted brake 40 or a drive assembly 50 corresponding to the present invention.

[0029] The drive assembly 50 in the form of a cylinder is provided with a motor-mounted brake 40. The motor-mounted brake comprises a housing part 42 which carries a tachometer assembly 1 according to the invention on its front face. The signals of the tachometer assembly can be transmitted to a control unit via a supply line 3, for example.

[0030] The further construction and function of the tachometer assembly 1 can be seen in Figure 2 The tachometer assembly 1 comprises a stator part 5, a movable rotor part 7 which is rotationally fixedly coupled to a hub 43 of a motor-mounted brake 40 via a driver 9. The hub 43 is in turn rotationally fixedly coupled to a drive shaft 51 of a drive assembly 50.

[0031] The stator component 5 comprises a stator body 11 having a base flange 13 and a connecting flange 15. The outer circumference of the base flange 13 is configured as a cylindrical centering collar 17. The connecting flange 15 protruding radially outwards beyond the centering collar 17 abuts the centering collar in an axially offset manner.

[0032] The cylindrical inner wall 19 forms together with the outer surface 21 of the base flange 13 a (cylindrical) receiving space 23 in which the rotor part 7 is arranged. The centering collar 17 is arranged in a corresponding connecting opening 45 of the housing part 42 in a centering manner coaxially with the central rotation axis 25 and is therefore also centered relative to the hub 43 or the drive shaft 101, which also extends coaxially with the central rotation axis 25.

[0033] By means of corresponding threaded holes 47 in the housing part 42, the stator body 11 is connected to the housing part via fastening elements 27. The fastening elements 27 are configured here as screws. The fastening elements 27 also surround a cover 29 which closes the receiving space 23 with respect to the outside.

[0034] Seals 30 and 31 are provided for reliable sealing between the cover 29 and the connecting flange 15 on the one hand and between the connecting flange 15 and the fastening region 49 surrounding the connecting opening 45. The receiving space 23 and the housing part 42 are thus reliably sealed off from the environment.

[0035] Furthermore, the housing part 42 can be provided with a closable maintenance and adjustment opening 44. The driver 9 is coupled to the hub 43 on its brake-side end and passes through the through opening 16 in the base flange 13 and projects into the receiving space 23, in which the rotor part 7 is connected to the driver.

[0036] In this way, all rotational movements of the motor-mounted brake 40 or the drive assembly 50 are transmitted via the drive 9 to the rotor part 7, which is thereby moved relative to the stator part 5. This rotation is detected via suitable electronic, optical or mechanical components with respect to both direction and speed and converted into a transmittable signal which can be transmitted to the controller via the supply line 3. The controller can detect or identify the operating criteria of the drive or motor-mounted brake.

[0037] In one embodiment (not shown), the fastening region 49 is configured to be axially countersunk into the housing component 42, so that a further receiving space is provided in the housing component, which can receive the tachometer assembly 1 completely within the contour of the housing component 42. In this way, the tachometer assembly completely “disappears” within the housing component.

[0038] The invention relates to a tachometer assembly (1) for a motor-mounted brake (40), the tachometer assembly comprising: a stator component (5) which can be coupled to a housing component (42) of the motor-mounted brake (40) during operation; a rotor component (7) which can be coupled to a drive shaft (51) passing through the motor-mounted brake (40), wherein the stator component (5) comprises a stator body (11) having a base flange (13) and a connecting flange (14). The invention relates to a connecting flange (15), wherein the base flange (13) has a housing-side centering collar (17) on its outer circumference, the connecting flange (15) adjoins the base flange (13) in an axially offset manner and forms an inner wall (19) on the inner circumference of the connecting flange, which together with the outer surface (21) of the base flange (13) forms a receiving space (23) for the rotor component (7), and the receiving space (23) is isolated from the external environment by a cover (29) that can be fixed to the connecting flange (15).

[0039] Further embodiments and variations of the invention will become apparent to those skilled in the art within the scope of the claims.

[0040] Reference numerals

[0041] 1 Tachometer assembly

[0042] 3 Supply routes

[0043] 5 Stator components

[0044] 7 Rotor components

[0045] 9. Drive

[0046] 11 Stator body

[0047] 13 Base flange

[0048] 15 Connection flange

[0049] 16 Through opening

[0050] 17 Centering collar

[0051] 19 Cylindrical inner wall

[0052] 21 External surface

[0053] 23 Accepting Space

[0054] 25 Center rotation axis

[0055] 27 Fastening element (screw)

[0056] 29 Cover

[0057] 30 Seals

[0058] 31 Seals

[0059] 40 Brake with motor

[0060] 42 Shell parts

[0061] 43 Hub

[0062] 44 Maintenance / Adjustment Opening

[0063] 45 Connection opening

[0064] 47 threaded holes

[0065] 49 Fastening area

[0066] 50 Drive components

[0067] 51 Drive shaft

[0068] 100 Tachometer

[0069] 110 Adapter Kit

[0070] 120 Shell parts

[0071] 140 Brake with motor

[0072] 150 Drive unit

Claims

1. A tachometer assembly (1) for a brake (40) equipped with a motor, the tachometer assembly comprising: a stator component (5) which is operable to be coupled to a housing component (42) of the motor-mounted brake (40); A rotor component (7) which can be coupled to a drive shaft (51) passing through the motor-mounted brake (40), wherein: The stator component (5) comprises a stator body (11) having a base flange (13) and a connecting flange (15). The base flange (13) has a housing-side centering collar (17) on its outer circumference. The connecting flange (15) adjoins the base flange (13) in an axially offset manner and forms an inner wall (19) on the inner circumference of the connecting flange, the inner wall together with the outer surface (21) of the base flange (13) forming a receiving space (23) for the rotor component (7), and the receiving space (23) is isolated from the external environment by a cover (29) that can be fixed to the connecting flange (15).

2. The tachometer assembly (1) according to claim 1, wherein: The rotor part (7) can be coupled to the drive shaft (51) via a driver (9), which protrudes from the tachometer assembly (1) through a through opening (16) arranged in the base flange (13) and, when the tachometer assembly (1) is arranged on the housing part (42), extends into the interior of the housing part (42) and can be coupled therein to the brake (40) mounted on the motor.

3. The tachometer assembly (1) according to any one of the preceding claims, wherein: The cover (29) and the stator part (5) can be coupled to the housing part (42) by means of a common fastening element (27).

4. The tachometer assembly (1) according to any one of the preceding claims, wherein: A sealing assembly (30; 31) isolates the receiving space (23) in a fluid-tight manner between the stator component (5) and the cover (29), and isolates the interior of the housing component (42) in a fluid-tight manner between the stator component (5) and the housing component (42).

5. A tachometer assembly as claimed in any preceding claim, wherein: The cover is composed of an electrically insulating material.

6. The tachometer assembly (1) according to any one of the preceding claims, wherein: The rotor component (7) can be coupled to the drive (9) via an element protruding into the receiving space.

7. The tachometer assembly (1) according to any one of the preceding claims, wherein: The tachometer assembly (1) acts as an electronic monitoring device that outputs a signal corresponding to an operating standard of the motor-mounted brake (40) and / or the drive assembly (50).

8. The tachometer assembly (1) according to any one of the preceding claims, wherein: The receiving space (23) is completely embedded in the housing part (42).

9. A motor-mounted brake (1), comprising a housing component (42) configured to receive a tachometer assembly (1) according to any one of claims 1 to 8.

10. The motor-mounted brake (1) according to claim 9, comprising a connection opening (45) corresponding to the centering collar (17).

11. The motor-mounted brake (1) as claimed in claim 9, comprising a fastening region (49) which is countersunk inwardly in the housing part (42).

12. A drive assembly (50) comprising a motor-mounted brake (1) according to one of claims 9 to 11 and a drive unit coupled to the motor-mounted brake (1).

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