DE10305434B4 - Adapter and geared motor - Google Patents

Abstract

Adapter for connecting a driving electric motor (1, 7) and a transmission arranged on the output side,
wherein a shaft (8) of the electric motor (1, 7) can be positively and / or non-positively connected to a first coupling part (19) of the adapter,
wherein the first coupling part (19) cooperates with a second coupling part (12) for transmitting torque,
wherein an adapter shaft (9) with the second coupling part (12) of the adapter is positively and / or non-positively connectable,
wherein the adapter housing (4) has an interface to the electric motor (1, 7) for detachable, mutually centerable connection to the housing of the electric motor (1, 7),
wherein the adapter housing (4) on the output side has a further interface (5) for detachable, mutually centerable connection with a housing part of the transmission,
wherein on the second coupling part (12) held together by springs (24) centrifugal jaws (14) are arranged on the circumference by means of which a brake pad (13) can be pressed on a friction surface of the adapter housing (4) when a critical value of rotational speed and / or centrifugal force is exceeded is ...

Description

The The invention relates to an adapter and a geared motor.

From the DE 196 37 361 A1 Adapters are known. The adapter is used only for coupling a transmission to a motor for the purpose of forming a geared motor. The geared motor can be used as a drive for lifts, construction hoists and hoists. In case of power failure, such a construction hoist moves as long as unrestrained, so accelerated by gravity, down to the engine brake of the electric motor incident. In this case, such an electric motor with brake, for example, from DE 198 38 171 A1 known, wherein the brake is designed there as an electromagnetically actuated brake.

From the CH 99359 A a winch with a skid brake is known which comprises an axially displaceable conical disk which carries the centrifugal jaws.

From the DE 26 993 A a centrifugal brake for a lifting device is known.

From the DE 26 32 408 A1 is a centrifugal clutch known with automatic switching device comprising a solenoid.

From the DE 536 116 A a drive device with brake regulator for hoists is known, wherein a drum is seated on the drive shaft.

Of the Invention is therefore the object of a geared motor in a compact way such that security, in particular at lifts, construction lifts and hoists in less expensive Way is improved.

According to the invention Task with the adapter according to claim 1 and in the geared motor solved according to the features specified in claim 9.

Important Features of the invention in the adapter are that the adapter for Connection of a driving electric motor and a driven side arranged Gear is provided, wherein a shaft of the electric motor with a form-fitting and / or non-positively connectable to a first coupling part of the adapter is, wherein the first coupling part with a second coupling part for torque transmission cooperates, wherein an adapter shaft with the second coupling part of the adapter form-fitting and / or non-positively connectable is the adapter housing to the electric motor out a Interface to releasable, mutually centerable connection with the housing of the electric motor, wherein the adapter housing on the output side has a further interface to the detachable, mutually centerable connection with a housing part of the transmission, wherein held on the second coupling part of springs centrifugal jaws are arranged on the circumference, by means of which when a critical Value of speed and / or centrifugal force on a brake pad a friction surface of the adapter housing is depressible, with the centrifugal jaws over a locking means are locked in such a way that the brake pad only on the friction surface suppressed, when the centrifugal jaws over the locking means are released, wherein as a locking means Arresting bell is provided which on a Fliehbackenträger axially slidably arranged.

From The advantage here is that with free rotation of the geared motor, such as, for example, a construction hoist that falls unchecked, So with increasing speed rotating geared motor, a centrifugal brake after dearretierung causes a limitation of the fall speed and thus the security can be increased is. Furthermore is the heat generated during braking of this centrifugal brake by means of the adapter housing dissipated to the environment and the adapter housing not only has housing-forming Function, mechanical function, such as torque and / or force dissipation, but also the function of a brake bearing plate and the aforementioned Heat dissipating.

at a further embodiment, the adapter shaft with at least a bearing in a transmission housing part, such as transmission housing cover or Gear housing, mounted and driven side with a toothing part of the transmission connectable. The advantage here is that the gearbox housing cover the transmission has such an interface that the adapter shaft very accurately positioned, in particular centered, to the transmission and its Verzahnteilen is. In addition, the clutch between the motor shaft and adapter shaft in the adapter housing allows and not in the area between the two, in the gearbox housing cover positioned bearings. From centrifugal brake and clutch introduced forces and / or torques are therefore compensated in the range of the adapter housing. there becomes an inner surface a housing part, which is made of steel or gray cast iron, used as a friction surface, and so is one else for that necessary part with friction surface einsparbar.

In particular, the centrifugal jaws can be locked in such a way that the brake pad only presses against the friction surface when a locking means is released. The advantage here is that various Safety concepts for construction hoists can be realized. This means that operating modes with high rotational speeds above the stated critical value can also be provided. In particular, the centrifugal brake is activated only when no locking is performed.

at a further embodiment is a locking bell as a locking means provided, which is arranged axially displaceably on a sleeve, and on the Scope of the first and second coupling part is arranged. From The advantage here is that a very compact design is achievable, especially the length is small. Since the coupling parts to perform the coupling function Anyway, there is no extra length for the locking device the centrifugal brake necessary.

at In another embodiment, the locking bell is a spring displaceable in one axial direction and by means of another Device slidable in the other axial direction. Advantageous is that the spring executable as a compression spring and thus providable is that at low speeds or stationary drive a lock he follows.

at In another embodiment, the locking bell is a Bearing in a relative to the adapter housing non-rotatable part, in particular in a switch body, stored, this non-rotatable part together with the bearing and the locking bell is arranged axially displaceable. Is an advantage doing that in a simple way the entire camp mitverschiebbar is and no special slide bearing or the like is necessary.

at In another embodiment, the non-rotatable part is by means of a Bowden cable displaceable. The advantage here is that one technically mature, reliable and cost-effective product can be used.

at Another embodiment is the Bowden cable with a brake lever connected so that when actuated, in particular turning, the brake lever first the locking bell to Dear renter, unlocking, sliding and continuing Actuate, in particular, turning, airing the engine brake executable is. The advantage here is that of the customer, especially in construction hoist drives Required security concepts are feasible.

at In another embodiment, the first coupling part is first Claws provided and second claw are provided on the second coupling part, which are engaged with the first claws. It is advantageous that a safe, reliable and Robust type of torque transmission is feasible.

From Advantage is the geared motor that no additional part is necessary because the adapter housing as a friction surface and for heat dissipation is usable, especially when using casting material.

at In a further embodiment, the electric motor comprises an electromagnetic actuated brake, the one device for ventilation the brake, such as brake levers or the like, comprises, by means of the device for ventilation the brake also a locking of the centrifugal brake is controllable. The advantage here is that different, from the customer in drives required security concepts are feasible, in particular also for drives of construction lifts.

1

motor housing

2

brake lever

3

motor flange

4

Adapter housing part

5

Gear-housing cover

6

terminal box

7

Hood for engine brake

8th

motor shaft

9

adapter shaft

10

roller bearing

11

camp

12

Fliehback carrier with steal

13

brake lining

14

centrifugal shoes

15

Halteblech

16

camp

17

switching body

 18

feather

19

Dog clutch member

20

Halteblech

21

Arretierglocke

22

Adjusting spring

23

Bowden

24

Tension springs for centrifugal baking

The invention will now be explained in more detail with reference to figures:
In the 1 the geared motor according to the invention with adapter is shown in a 3D perspective view. In 2 is a section through the adapter shown. In 3 this section is enlarged and shown in 4 is a spatial view in a partially cut adapter to see.

The engine is designed as a brake motor, which is a motor housing 1 , in particular a cooling fins comprehensive, and a hood 7 for the B-side ordered motor brake comprises, wherein the brake is designed as an electromagnetically actuated brake. The hood 7 is also suitable for motors that not only include a B-side brake but also B-side encoders and / or fans. In de-energized operation, the brake is applied because compression springs press an armature disc of the brake against a brake pad carrier with brake pad. By means of a brake lever 2 the brake is releasable; this is carried out such that the armature disk and the brake pad carrier with brake pad can be brought apart by means of the actuation of a brake lever and then the rotor of the electric motor is freely rotatable.

In the invention is with this brake lever 2 a Bowden cable 23 connected, which is arranged to actuate a locking of an A-side, integrated in an adapter formed and cooperating with an adapter coupling centrifugal brake is provided.

It is on actuation of the brake lever 2 Initially, ie at small angles of rotation, there is an empty path in which the catch is first released, ie unlocked. Only after exceeding a critical angle of rotation, the engine brake is released.

The electric motor 1 has electrical connection devices for the electrical supply lines and the brake lines in its terminal box.

The motor 1 is by means of its motor flange 3 with the adapter housing part 4 connected, in turn, with the gearbox housing cover 5 is connected and for this purpose has a corresponding, precisely worked interface for releasable connection. In the gearbox housing cover 5 a camp is sitting 11 and a driven side bearing disposed as a roller bearing 10 is executable. By means of these bearings 10 . 11 is the adapter shaft 9 in the housing part 5 stored. The adapter shaft 9 is by means of a dog clutch with the motor shaft 8th , So the rotor shaft, connected. The dog clutch consists of a first and a second coupling part, each comprising jaws which engage with each other. The first coupling part 19 is by means of feather key 22 positive locking with the motor shaft 8th connected. The second coupling part is as Fliehbackenträger 12 executed with claws.

The centrifugal baking 14 are arranged on the circumference of the second coupling part and of the retaining plates ( 15 . 20 ) held in its axial position. In the radial direction are the centrifugal jaws 14 movably arranged, whereby however the centrifugal jaws 14 have a lathed extension and there by means of circumferentially arranged springs, namely by means of in 4 shown tension springs 24 for centrifugal jaws, are held together and can overcome the spring force and change their radial position only when a correspondingly large centrifugal force occurs. But prevents the Arretierglocke 21 this radial movement when the lock is active, ie the in 3 shown state. Because the locking bell 21 has a cylindrical end portion which blocks an axial end portion on the outer circumference of the centrifugal jaws. However, by means of the Bowden cable 23 the connected switching body 17 moved axially away from the centrifugal bodies, overcoming the spring force of the spring 18 , also becomes the camp 16 over which the non-rotating body switch 17 at the locking bell 21 is stored, moved away and thus dearretiert, so the centrifugal jaws 14 Approved. The feather 18 pushes the locking bell 21 again in the locked state, ie in the state of locking the centrifugal jaws by means of the locking bell when the Bowden cable no longer exerts force.

If the lock is thus released and thus exceeds the speed of a critical value and thus also the centrifugal forces, the centrifugal jaws 14 with the brake pads provided on them 13 pressed on a portion of the inner surface of the adapter housing. This area thus represents a friction surface. The adapter housing thus has not only the housing function but also the function of a friction surface and ensures the removal of the frictional heat generated during braking to the environment. So it is a material usable, which has a good thermal conductivity. It is essential that the engine can reach high operating temperatures and thus a dissipation of heat over the range of the engine and the motor housing would be disadvantageous. The adapter housing design is thus advantageous when the thermal resistance of the friction surface to the environment is lower than the thermal resistance of the friction surface on the inner region of the engine including the rotor and the motor housing to the environment.

The brake lever 2 is with the Bowden cable 23 mechanically coupled. In a first embodiment, the Bowden cable is directly connected with its end to the brake cable and thus immediately upon rotation of the brake lever 2 the Bowden cable 23 actuated. The engine brake is released only after turning for a certain minimum amount.

In 2 is a starting position of the brake lever 2 shown and another, dashed line position.

In other embodiments of the invention, an embodiment is providable, at first, so in the free travel, only the brake is ventilated and then only the lock is releasable. Alternatively, dearrating and airing are predictable at the same time. Embodiments are also conceivable in which, instead of being locked, the locking is achieved. Instead of a Bowden cable and technically equivalent couplings between brake lever and locking bell of the centrifugal clutch are advantageously executable. It is essential that the mechanical part for this purpose has an equivalent mode of action. Also, instead of the dog clutch, another clutch can be used, such as toothed clutch or other positive, friction and / or non-positive clutches.

In another advantageous embodiment is even between engine 1 and adapters comprising adapter housings 4 and adapter shaft 9 arranged a thermal barrier.

Claims (9)

Adapter for connecting a driving electric motor ( 1 . 7 ) and a driven side arranged gear, wherein a shaft ( 8th ) of the electric motor ( 1 . 7 ) with a first coupling part ( 19 ) of the adapter is positively and / or non-positively connectable, wherein the first coupling part ( 19 ) with a second coupling part ( 12 ) cooperates for transmitting torque, wherein an adapter shaft ( 9 ) with the second coupling part ( 12 ) of the adapter is positively and / or non-positively connectable, wherein the adapter housing ( 4 ) to the electric motor ( 1 . 7 ) has an interface to the detachable, mutually centerable connection with the housing of the electric motor ( 1 . 7 ), wherein the adapter housing ( 4 ) on the output side another interface ( 5 ) for detachable, mutually centerable connection with a housing part of the transmission, wherein on the second coupling part ( 12 ) of springs ( 24 ) held together centrifugal jaws ( 14 ) are arranged on the circumference, by means of which, when a critical value of rotational speed and / or centrifugal force is exceeded, a brake pad ( 13 ) on a friction surface of the adapter housing ( 4 ) is pressed, the centrifugal jaws via a locking means ( 21 ) are lockable such that the brake pad ( 13 ) presses only on the friction surface when the centrifugal jaws ( 14 ) via the locking means ( 21 ) are released, as a locking means a locking bell ( 21 ) provided on a centrifugal jaw carrier ( 12 ) Is arranged axially displaceable. Adapter according to at least one of the preceding claims, characterized in that the adapter shaft ( 9 ) with at least one bearing ( 10 . 11 ), in particular with two warehouses ( 10 . 11 ), in the transmission housing part, such as transmission housing cover ( 5 ) or gear housing, is mounted and the output side with a toothing part of the transmission is connectable. Adapter according to at least one of the preceding claims, characterized in that locking bell ( 21 ) is arranged axially displaceably on a sleeve, which at the periphery of the first and second coupling part ( 19 . 12 ) is arranged. Adapter according to at least one of the preceding claims, characterized in that the locking bell ( 21 ) of one or more springs ( 18 ) is displaceable in an axial direction into the arresting position and by means of a further device ( 16 . 17 . 23 ) is displaceable in the other axial direction in the release position. Adapter according to at least one of the preceding claims, characterized in that the locking bell ( 21 ) about a warehouse ( 16 ) in a relative to the adapter housing ( 4 ) non-rotatable part, in particular in a switch body ( 17 ), this non-rotatable part ( 17 ) together with the warehouse ( 16 ) and the locking bell ( 21 ) Is arranged axially displaceable. Adapter according to at least one of the preceding claims, characterized in that the non-rotatable part ( 17 ) by means of a Bowden cable ( 23 ) is displaceable. Adapter according to at least one of the preceding claims, characterized in that the Bowden cable ( 23 ) with a brake lever ( 2 ) is connected such that upon actuation, in particular rotation, of the brake lever ( 2 ) first the locking bell ( 21 ) is displaceable to Dearretieren and further continued actuation, in particular turning, a release of the brake, in particular engine brake, executable. Adapter according to at least one of the preceding claims, characterized in that on the first coupling part ( 19 ) are provided first claws and on the second coupling part ( 12 ) are provided second claws which are engaged with the first jaws. Geared motor with adapter according to at least one of the preceding claims, wherein the geared motor the adapter and an electric motor ( 1 . 2 . 6 . 7 ) and a transmission, and wherein the electric motor ( 1 . 2 . 6 . 7 ) comprises an electromagnetically actuated brake, in particular an engine brake, comprising a device for releasing the brake, such as brake levers ( 2 ) or the like, wherein by means of the device for releasing the brake ( 2 ) also a locking of the centrifugal brake is controllable.