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

Abstract

The present invention relates to a tachometer assembly (1) for a motor-mounted brake (40). The tachometer assembly (1) includes a stator component (5) that can be coupled to a housing component (42) of the motor-mounted brake (40) during operation, and a rotor component (7) that can be coupled to a drive shaft (51) passing through the motor-mounted brake (40). The stator component (5) includes a stator body (11) having a base flange (13) and a connection flange (15). The base flange (13) has a housing-side centering collar (17) on its outer periphery. The connection flange (15) is adjacent to the base flange (13) in an axially offset manner, forms an inner wall (19) on its inner periphery, and this inner wall (19), together with the outer surface (21) of the base flange (13), forms a receiving space (23) for the rotor component (7). The receiving space (23) is closed from the external environment by a cover (29) that can be fixed to the connection flange (15).

Description

Technical Field

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

Background Art

[0002] Tachometers that can be attached to motor-mounted brakes are generally known. Such tachometers enable quick and easy braking of motors that are ventilated externally and internally, such as those found in trolleys, trolley chassis, and hoisting gears of crane systems.

[0003] Particularly compact motor-mounted brakes are used especially in harsh environmental conditions. This is because the functional elements of the actual brake can be effectively shielded from the influence of the environment by a cover.

[0004] Due to these compact designs, motor-mounted brakes are also suitable for use in installation situations where space is restricted.

[0005] A tachometer assembly (tachometer or speed measuring device) helps monitor the operating criteria of a drive controlled by a motor-mounted brake and of the motor-mounted brake itself.

[0006] FIG. 3 shows a tachometer assembly according to the prior art. The actual tachometer 100 is, in this case, connected via an adapter assembly 110 to the housing part 120 of an actual motor-mounted brake 140. Internally, the connection is made via a driver assembly coupled to the tachometer shaft within the adapter assembly 110. In this manner, a reliable connection between the tachometer 100 and the drive part 150 of the motor-mounted brake 140 is ensured, but the tachometer assembly or the tachometer 100 itself significantly protrudes from the actual motor-mounted brake 140, and both a plurality of external adapter parts and internal adapter parts are required to couple the tachometer 100 to the drive part 150 of the motor-mounted brake 140. That is, the assembly is complex to mount, requires a relatively large amount of installation space, and must be centered and oriented in a complex manner with respect to the fixed and movable active elements of the motor-mounted brake 140.

[0007] A typical tachometer is connected to the housing part of a motor-mounted brake by an input shaft. For this purpose, the input shaft has a plurality of fastening devices at its end facing away from the base plate and the electric motor, and a further shaft, such as a motor shaft extending through an opening, can also be fastened there.

[0008] Most tachometers are actually speedometers in terms of the measurement principle. However, optical sensors or capacitance sensors can have reduced reliability under harsh conditions, particularly in the case of condensation or dust.

[0009] The 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 includes a stator component that can be coupled to a housing component of the motor-mounted brake during operation, and a rotor component that can be coupled to a motor shaft passing through the motor-mounted brake. The stator component includes a stator body having a base flange and a connection flange. The base flange has a housing-side centering collar on its outer periphery. The connection flange is adjacent to the base flange in an axially offset manner, forms an inner wall on its inner periphery, and together with the outer surface of the base flange, forms a receiving space for the rotor component. The receiving space is blocked from the external environment by a cover that can be fixed to the connection flange.

[0011] Further aspects and features are found in the dependent claims, the accompanying drawings, and the description of the following embodiments.

Brief Description of the Drawings

[0012] Here, embodiments are described by way of example with reference to the accompanying drawings.

[0013]

Figure 1

Figure 2

Figure 3

Modes for Carrying Out the Invention

[0014] Before a detailed description of the embodiment with reference to FIG. 1, a general description of the embodiment follows first.

[0015] The tachometer assembly according to the present invention allows for a particularly compact and easy-to-install design. This tachometer assembly can be arranged substantially or entirely inside the outer contour of the motor-mounted brake. Therefore, in fact, no additional installation space is required, and there is also no risk that the tachometer assembly will be damaged (collide, sheared, etc.) during operation. Due to the compact planar design, the tachometer assembly can further be easily replaced or retrofitted to an existing motor-mounted brake.

[0016] There are embodiments in which the rotor part can be coupled to the motor shaft via a driver. The driver projects from the tachometer assembly through a driver opening configured in the base flange and extends into the interior of the housing part when the tachometer assembly is arranged in the housing part, where it can be coupled to the motor-mounted brake. In such embodiments, all the parts necessary to operate the tachometer assembly or to connect the tachometer assembly to the motor-mounted brake are arranged so as to be optimally protected within the housing part of the motor-mounted brake itself.

[0017] There are embodiments in which the cover and the stator part can be coupled to the housing part by a common fastening element. In this manner, existing connection bores (threaded bores in the housing part) can be used for the purpose of both coupling the tachometer assembly itself to the housing part of the motor-mounted brake via the stator part and at the same time shielding the entire tachometer assembly or its interior from the external environment by a fixable cover.

[0018] There are embodiments in which a plurality of seal assemblies between the stator part and the cover and between the stator part and the housing part close both the receiving space in which the actual motor-mounted brake is arranged and the interior of the housing part in a fluid-tight manner from the external environment. That is, both the tachometer assembly itself and the essential elements of the motor-mounted brake are reliably sealed against the influence of the environment.

[0019] There are embodiments in which the cover is made of an electrically insulating material, so that the essential tachometer components are effectively shielded from electrical influences from the outside.

[0020] There are embodiments in which the rotor component can be coupled to the driver via an element protruding into the receiving space. That is, with an appropriate design of this driver, it becomes possible to adapt the tachometer assembly to motor-mounted brakes of various structures and sizes. There is no need to adapt the elements of an actual motor-mounted brake.

[0021] There are embodiments in which the tachometer assembly functions as an electronic monitoring device that outputs a signal corresponding to an operating criterion. That is, it is not only possible to detect and monitor the actual speed, but also possible to derive conclusions regarding the maintenance status of the drive assembly and / or the motor-mounted brake, for example, via a speed change in a specific operating state. For example, signs of wear of the brake disk or brake pads, or abnormal operating characteristics of the drive, can be monitored and determined.

[0022] There are embodiments in which the receiving space is completely embedded inside the housing component. In such an embodiment, the tachometer assembly completely disappears inside the contour of the housing component of the motor-mounted brake. No additional installation space is required.

[0023] A further aspect of the invention relates to a motor-mounted brake having a housing component configured to receive a tachometer assembly according to the invention.

[0024] There are embodiments in which the housing component of the motor-mounted brake is provided with a connection opening corresponding to the centering collar of the stator component. That is, the tachometer assembly can be centered particularly easily in the housing component, and thus can also be arranged and fixed to the movable elements acting concentrically with the motor-mounted brake.

[0025] A further aspect relates to a drive assembly having a motor-mounted brake according to the invention and a drive unit (e.g., an electric drive unit or an electric motor) coupled to the motor-mounted brake.

[0026] Returning to FIG. 1, this shows an exemplary embodiment of a tachometer assembly 1, a motor-mounted brake 40, or a drive assembly 50 corresponding to the present invention.

[0027] The motor-mounted brake 40 is provided on a drive assembly 50 standardized by a cylinder or a column. The motor-mounted brake includes a housing part 42 carrying the tachometer assembly 1 according to the present invention on its front surface. The signal of the tachometer assembly can be transmitted to the control unit, for example, via the supply line 3.

[0028] A further structure and function of the tachometer assembly 1 can be found in FIG. 2. The tachometer assembly 1 includes a stator part 5 and a movable rotor part 7 fixedly connected in terms of rotation to a hub 43 of the motor-mounted brake 40 via a driver 9. Here, the hub 43 is fixedly connected in terms of rotation to a drive shaft 51 of the drive assembly 50.

[0029] The stator part 5 includes a stator body 11 having a base flange 13 and a connection flange 15. The outer periphery of the base flange 13 is configured as a cylindrical centering collar 17. The connection flange 15 protruding radially outward beyond the centering collar 17 is adjacent to the centering collar 17 in an axially offset state.

[0030] The cylindrical inner wall 19 and the outer surface 21 of the base flange 13 together form a (cylindrical) receiving space 23 in which the rotor part 7 is arranged. Since the centering collar 17 is arranged to be centered coaxially with the rotation center axis 25 in a corresponding connection opening 45 of the housing part 42, it is also centered with respect to the hub 43 or the drive shaft 101 extending coaxially with the rotation center axis 25.

[0031] The stator body 11 is connected to the housing part 42 via a fastening element 27 by corresponding threaded bores 47 in the housing part 42. The fastening element 27 is configured here as a screw. The fastening element 27 also includes a cover 29 that closes the receiving space 23 towards the outside.

[0032] A seal 30 or 31 is provided to reliably seal, on the one hand, between the cover 29 and the connection flange 15 and, on the other hand, between the connection flange 15 and the fastening region 49 surrounding the connection opening 45. That is, the receiving space 23 and the housing part 42 are reliably closed off from the environment.

[0033] In addition, the housing part 42 is provided with a closable maintenance and adjustment opening 44. The driver 9 is coupled to the hub 43 at its brake-side end, passes through the through-opening 16 of the base flange 13, and projects into the receiving space 23 where the rotor part 7 is connected to the driver.

[0034] In this embodiment, all rotational movements of the motor-mounted brake 40 or the drive assembly 50 are transmitted via the driver 9 to the rotor part 7 that moves relative to the stator part 5. This rotation can be detected with respect to both direction and speed via appropriate electronic, optical, or mechanical components and converted into a transmissible signal that is transmitted via the supply line 3 to the controller. The controller can detect or identify the operating criteria of the driver or the motor-mounted brake.

[0035] In an embodiment not shown, the fastening region 49 is configured to be axially countersunk into the housing part 42 such that an additional receiving space is formed that can completely receive the tachometer assembly 1 within the contour of the housing part 42. In this embodiment, the tachometer assembly completely "disappears" into the housing part.

[0036] The present invention relates to a tachometer assembly (1) for a motor-mounted brake (40). The tachometer assembly (1) includes a stator component (5) that can be coupled to the housing component (42) of the motor-mounted brake (40) during operation, and a rotor component (7) that can be coupled to a drive shaft (51) passing through the motor-mounted brake (40). The stator component (5) includes a stator body (11) having a base flange (13) and a connection flange (15). The base flange (13) has a housing-side centering collar (17) on its outer periphery. The connection flange (15) is adjacent to the base flange (13) in an axially offset manner and forms an inner wall (19) on its inner periphery. This inner wall (19), together with the outer surface (21) of the base flange (13), forms a receiving space (23) for the rotor component (7). The receiving space (23) is closed off from the external environment by a cover (29) that can be fixed to the connection flange (15).

[0037] Further embodiments and modifications of the present invention will be apparent to those skilled in the art within the scope of the claims.

Explanation of Reference Numerals

[0038] 1 Tachometer assembly 3 Supply line 5 Stator component 7 Rotor component 9 Driver 11 Stator body 13 Base flange 15 Connection flange 16 Through opening 17 Centering collar 19 Cylindrical inner wall 21 Outer surface 23 Receiving space 25 Rotation center axis 27 Fastening element (screw) 29 Cover 30 Seal 31 Seal 40 Motor-mounted brake 42 Housing component 43 Hub 44 Conservative / Adjustment Opening 45 Connection Opening 47 Threaded Bore 49 Fastening Region 50 Drive Assembly 51 Drive Shaft 100 Tachometer 110 Adapter Assembly 120 Housing Component 140 Motor Mounted Brake 150 Driver

Claims

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

2. 2. The tachometer assembly (1) of claim 1, wherein the rotor part (7) is coupled to the drive shaft (51) via a driver (9), the driver (9) protruding from the tachometer assembly (1) through a through opening (16) formed in the base flange (13) and extending to the inside of the housing part (42) when the tachometer assembly (1) is arranged in the housing part (42), where it can be coupled to the motor-mounted brake (40).

3. 3. The tachometer assembly (1) according to claim 1 or 2, wherein the cover (29) and the stator part (5) can be connected to the housing part (42) by a common fastening element (27).

4. A seal assembly (30; 31) between the stator component (5) and the cover (29) closes the receiving space (23) in a fluid-tight manner, and a seal assembly (30; 31) between the stator component (5) and the housing component (42) closes the interior of the housing component (42) in a fluid-tight manner, the tachometer assembly (1) according to any one of claims 1 to 3.

5. The cover is made of an electrically insulating material, the tachometer assembly according to any one of claims 1 to 4.

6. The rotor component (7) can be coupled to the driver (9) via an element protruding into the receiving space, the tachometer assembly (1) according to any one of claims 1 to 5.

7. The tachometer assembly (1) functions as an electronic monitoring device that outputs a signal corresponding to the operating criteria of the motor-mounted brake (40) and / or the drive assembly (50), the tachometer assembly (1) according to any one of claims 1 to 6.

8. The receiving space (23) is completely embedded inside the housing component (42), the tachometer assembly (1) according to any one of claims 1 to 7.

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

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

11. Having an inwardly countersunk fastening region (49) inside the housing component (42), the motor-mounted brake (1) according to claim 9.

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

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