DE102018102396B3 - Plug-in motor module for a hoist - Google Patents

Abstract

The invention relates to a plug-in motor module 1 for arrangement in a motor housing 2 of a hoist 3, a hoist 3 with a plug-in motor module 1 and a method for connecting a plug-in engine module 1 in a motor housing 2 of a hoist 3. To a motor 1 for a hoist. 3 to provide a hoist 3 and a method for the maintenance of a hoist 3, which allow a particularly long-lasting operation of the hoist 3, a particularly simple, fast and cost-effective maintenance and a speedy replacement of the engine, it is provided that the plug-in motor module 1 according to the invention a vane motor 4 having a jacket 5 as a stator, wherein the jacket 5 at least partially forms a housing 6 of the motor module 1 and wherein within the housing 6 a driven by compressed air to an eccentrically arranged in the housing 6 rotor shaft 7 rotatable rotor body 8 with radially movable in lamellae slats is arranged and arranged on an outer side of the motor module 1 or accessible from the outside rotor shaft connection 9 for transmitting the rotation of the vane motor 4 to another component 17 of the hoist 3 and at least one further connection 10 on the engine module 1 for an operating fluid for driving the vane motor 4 is provided.

Description

The invention relates to a plug-in motor module for arrangement in a motor housing of a hoist, a hoist with a plug-in motor module and a method for connecting a pluggable motor module in a motor housing of a hoist.

Hoists are known in various embodiments from the prior art and are used in particular for floating lifting and moving loads. For this purpose, the load is usually determined by means of a hook or other attachment to a chain, a rope or the like and moves the chain or the rope by means of a drive. The drive includes a motor, usually a transmission and other components.

As an engine, both an electric motor, as well as a hydraulically or pneumatically driven motor can be used. Lamellae motors are commonly used as pneumatic motors. In such a vane motor, a rotor body is arranged eccentrically in a motor bush. In the rotor body there are longitudinal slots, the lamellae, in which slats are arranged displaceably. The compressed air supplied to the vane motor is conducted in chambers formed between the fins. The compressed air then drives the engine so that the rotor body begins to rotate in the engine bushing. The lamellae can be pressed by springs and with increasing speed under the effect of centrifugal force to the outside, so that they lie sealingly against the motor bushing and thus form the chambers.

In the hoists of the prior art, the vane motor is firmly installed and in particular with a housing of the hoist and at least one subsequent to the vane motor component of the hoist, usually a gear or a brake or directly a chain drive, fixedly connected via a shaft. However, these hoists of the prior art have the disadvantage that disassembly of the hoist for maintenance or replacement of the vane motor is complicated and time consuming. Thus, a regularly necessary maintenance and a defect in the area of the multi-disk motor lead to a longer downtime and a corresponding interruption of the current operation. In particular, in some smaller hoists of the vane motor is even integrated so that an exchange is not economically possible, so that a defect in the engine makes a complete replacement of the hoist necessary.

From the publication US 2,989,288 A is already known a compressed air hoist with a vane motor drive. The motor is firmly installed inside the housing and has a jacket and end plates on both ends. The motor shaft transmits the rotation of the motor to a gearbox. The air is supplied through an air passage through the outer end plate and the air outlet via an opening in the shell near the inner end plate.

The publication DE 10 2008 038 901 B4 relates to a drive unit having a control valve unit connected to a pressure-reducing compressed air port, wherein the flow rate of the pressure medium in the connection is reduced or increased based on the pressure of the medium at the connection. The pressure is detected so that a lowering state above a load threshold value is detected. A load-dependent, variable sealing effect of a motor is detected in the load threshold. The control valve unit then reduces a flow rate of the pressure medium in the connection in the load reduction state. The motor may be a vane motor, which is surrounded by a motor bush, which is closed on both sides by a cover. At one end of the shaft, a braking element is arranged. The engine is fixed in a fixed overall housing.

It can therefore be regarded as an object of the present invention to provide an engine for a hoist, a hoist and a method for the maintenance of a hoist, a particularly long-lasting operation of the hoist, a particularly simple, fast and cost-effective maintenance and a speedy replacement of the engine enable.

The object is achieved by a plug-in motor module according to claim 1, a hoist with a plug-in motor module according to claim 9 and a method according to claim 10. Advantageous developments of the invention are specified in the dependent claims.

The plug-in motor module according to the invention, for arrangement in a motor housing of a hoist, has a vane motor with a jacket as a stator, wherein the jacket at least partially, preferably completely forms a housing of the motor module and wherein within the housing, in particular of the jacket, driven by compressed air , Rotary rotor body rotatable about an eccentrically arranged in the housing rotor shaft is arranged with slats radially movable in lamellae. Furthermore, a rotor shaft connection arranged on an outer side of the motor module or accessible from the outside is Transferring the rotation of the vane motor to another component of the hoist and at least one further connection to the motor module for an operating fluid, in particular for compressed air, provided for driving the vane motor.

Furthermore, the invention relates to a hoist with a plug-in motor module according to the invention, which has a motor housing with a receiving opening for, preferably complete, receiving the motor module, wherein a further component of the hoist is arranged in the region of the receiving opening, that in a receiving position of the motor module, the rotor shaft connection with the further component in the receiving opening in engagement for transmitting the rotation of the multi-disk motor, in particular the rotor shaft passes, and wherein at least one connection for an operating fluid in the receiving opening is arranged such that in a receiving position of the motor module, a connection to the respective terminal of Motor module for the operating fluid, preferably automatically arises.

Finally, the invention relates to a method for connecting a plug-in engine module, in particular a motor module according to the invention in a hoist, wherein first aligned the motor module in front of a receiving opening of the motor housing for receiving the motor module and then inserted the motor module in the receiving opening and with respect to its rotational position its center longitudinal axis is aligned around and / or with respect to the insertion depth along the direction of insertion, which can be done in particular by means of a motor module arranged on the guide element. Upon reaching the operating or receiving position in the motor housing, at least one mechanical connection, in particular a rotor shaft of a multi-disk motor in the motor module, and / or at least one, preferably all pneumatic connections, in particular the connections for compressed air for operating the multi-disk motor, automatically produced.

The inventive design of the multi-disc motor as a plug-in easily and replaceable motor module allows in a particularly simple manner a long-lasting operation of a hoist and at the same time avoiding prolonged breakdowns. It is not only faster maintenance and a speedy replacement of a defective engine possible, but also conceivable that several engine modules are kept to a hoist, so that a business interruption for maintenance or replacement of a defective engine module can be limited to the mere duration of replacement and operation with a second engine module may be promptly continued while the first engine module is being serviced or repaired. Finally, the invention allows a simple way of repairing the engine, without the entire hoist must be dismantled.

Under a plug-in engine module is basically understood an assembly that includes at least one motor, in particular a vane motor, and is independently manageable and / or transportable and is intended as a module with a dedicated assembly, namely a motor housing of a hoist connected to his. The engine module preferably comprises all components of the engine, in particular a multi-disk motor operated with compressed air.

According to the plug-in motor module is formed such that it is immediately ready for operation after insertion into a receiving opening of a motor housing of a hoist. In particular, the plug-in motor module preferably locks automatically in the receiving or operating position in the motor housing, that is, it is automatically fixed and held positively and / or positively when the receiving or operating position is reached. Alternatively, however, a backup by screws, especially against axial slipping out, conceivable.

The engine can basically be any engine. It is preferably a fluid motor, particularly preferably an expansion engine, particularly preferably a gas expansion engine. Most preferably, the motor is a vane motor. Further preferably, the vane motor is provided for driving a hoist and in particular a chain of a hoist. However, the vane motor can not only be a pneumatic motor, but in principle by means of a liquid, so hydraulically operated. This may for example be a gear motor. Accordingly, the operating fluid may be both a gas and a liquid, with compressed air being the preferred operating fluid.

During operation of the multi-disk motor, the rotor body rotates in a cylindrical motor bush, which preferably comprises the casing, and is arranged eccentrically in this case. The rotor body has lamellar gaps, wherein a lamella is arranged in each lamellae, which is displaced radially during a rotation of the rotor body about the rotor shaft and / or slides on the motor bush and thereby forms a closed chamber. The rotor body and the rotor shaft can in principle be formed from any material and have any shape. Preferably, the rotor body is arranged rotationally fixed on the rotor shaft and particularly Preferably, the rotor shaft and the rotor body are integrally formed and / or materially connected to each other.

The jacket may initially be both a one-piece component, as well as an assembly of any number of parts. The jacket has the function to surround the vane motor at least in sections, preferably over the entire circumference. Preferably, the jacket forms at least a part of the motor sleeve. Particularly preferably, the entire motor sleeve, at least in the radial direction with respect to the rotor shaft, formed by the shell. Further preferably, the fins are slidably guided on the inside of the shell, that is, the shell forms the stator of the vane motor. Also preferably, the outside of the shell limits the motor module in this area and thereby forms at least a part of a housing of the motor module.

According to the invention, a rotor shaft connection is arranged on an outer side or a side accessible from the exterior of the motor module, which basically serves to transmit the rotation of the vane motor and, in particular, the rotor shaft connected to the rotor body to a further component of the hoist. The rotor shaft connection is preferably arranged directly on the rotor shaft of the multi-disk motor. An immediate arrangement of the rotor shaft connection not only has the advantage that the rotation can be transmitted in a particularly simple manner, but also that a determination of the position of the motor module in the motor housing by the interaction of the other component of the hoist takes place, since the rotor shaft and thus Then, the rotor shaft connection is not located in the center or in the region of the central longitudinal axis of the motor module, but is arranged eccentrically. Accordingly, a rotation of a motor module arranged in the motor module with a connected to a further component of the hoist motor shaft connection is not readily possible. Particularly preferably, the rotor shaft connection is formed as a bush, which is particularly preferably provided for cooperation with a shaft arranged in the motor housing of the hoist.

In the case of the further component of the hoist, which interacts directly or indirectly with the rotor shaft connection, it may initially be an arbitrary component or an arbitrary assembly which has to be rotated during operation of the hoist. Conceivable are u.a. a transmission, a brake unit, a chain or rope drive or a clutch. Particularly preferably, the further component is a gear which cooperates with the rotor shaft connection via a shaft.

Finally, according to the invention, the engine module has at least one further connection via which an operating fluid, in particular compressed air, can be supplied or removed. Preferably, at least the engine module at least two ports for supply and discharge of compressed air. Preferably, each of the ports is an opening or an end of a channel, hose, or bore for conducting an operating fluid. In principle, at least one of the connections and particularly preferably at each of the connections, a sealing element can be arranged, which allows a tight connection with a corresponding connection in the motor housing of the hoist. Preferably, however, the motor module is formed such that a fit between the motor module and the motor housing is achieved, whereby no seal is necessary.

In addition, the engine module may have further connections for an operating fluid, for example for a brake unit. In addition, other connections are conceivable, which can be designed arbitrarily and are not limited to connections for operating fluids, but for example, can be electrical connections with any number of contacts.

In a preferred embodiment of the plug-in motor module according to the invention, the jacket has a cylindrical shape. Further preferably, one outer cover and / or the other end an inner cover is arranged at one end on the jacket. In this case, the inner lid is arranged on the side which is located in a motor housing arranged in the engine module inside and / or not accessible from the outside. Accordingly, the outer cover is arranged on the side of the engine module, which is still accessible with an inserted engine module and / or inserted last into the motor housing. Preferably, the outer and / or the inner lid is integrally formed. Further preferably, the outer and / or the inner lid is reversible to open and particularly preferred form-fitting and / or non-positively fixed to the jacket. Most preferably, the outer and / or the inner lid is fixed by means of at least one, preferably by means of several and more preferably by means of four screws on the jacket.

Particularly preferably, the jacket is closed at one end with the outer lid and the other end with the inner lid. Closed means at least that the vane motor is covered so that a user can not come into contact with the rotor body. In this case, however, the closed lid can contain openings, for example in order to be able to wait for components of the motor module to be able to supply equipment such as compressed air, hydraulic fluid or lubricant, or one mechanical connection, in particular with the rotor shaft of the multi-disk motor to produce. Particularly preferably, at least part of the rotor shaft is accessible through the two covers, in particular through the inner cover of the rotor shaft connection and / or through the outer cover a lubrication nipple arranged on the rotor shaft.

According to an advantageous embodiment of the plug-in motor module according to the invention, the rotor shaft connection is formed in the region of a rotor shaft section protruding from the motor module or the jacket through the inner cover, wherein the rotor shaft section preferably has a self-locking connection possibility, in particular a connection socket for receiving a shaft. In this case, the entire rotor shaft including the region of the rotor shaft connection can be covered in the radial direction and surrounded in particular in the region of the rotor shaft connection by a part of the inner cover such that the rotor shaft ends flush with the inner cover in the axial direction and particularly preferably protrudes at the same time against the jacket , A self-locking connection possibility is understood to mean a connection which locks the connected component in the rotational direction and / or in the axial direction, that is to say prevents further movement in at least one direction with respect to the rotor shaft connection. This can be done in particular by a positive and / or non-positive determination.

According to a further advantageous embodiment of the plug-in motor module according to the invention is arranged within the motor module brake unit, in particular with at least one brake piston provided, the summarization of the vane motor and a brake unit to a common module allows it in a simple manner, both cooperating in operation components together waiting. In this case, the brake unit can basically be formed as desired and can be operated electrically, by means of an operating fluid or in another manner. Preferably, the brake unit and in particular the brake piston is operated pneumatically. Alternatively, however, a hydraulic operation is conceivable. In this case, the brake unit, in particular the brake piston, the rotor shaft is arranged surrounding.

A preferred embodiment of the plug-in engine module according to the invention provides that the brake unit, in particular the at least one brake piston, is arranged on a side of the rotor shaft opposite the rotor shaft connection and / or in the motor module between the outer cover and the rotor body, whereby the brake unit is particularly easily accessible and Heat generated during braking more easily derived from the motor housing, rather than on the other components of the hoist, such as a transmission is transmitted. In this case, the brake unit, in particular the brake piston, acts on the rotor shaft and / or the rotor body. Most preferably, the brake unit is located immediately behind the outer lid.

According to an advantageous embodiment of the plug-in motor module according to the invention is at least one further connection and are preferably all other connections for operating fluids for driving the vane motor on the jacket and / or all other connections for operating fluids for operating the brake unit on one of the covers, in particular on the outer cover arranged , For this purpose, preferably compressed air connections and particularly preferably at least one compressed air supply line are provided. The discharge of compressed air of the multi-disk motor and / or the brake unit can take place both via a common outlet or a common compressed air discharge, as well as by an outlet or in each case a compressed air discharge.

It is also advantageous if at least one guide element for positionally accurate positioning of the motor module in the motor housing is arranged on the jacket of the plug-in motor module, whereby a precise insertion and a connection of the terminals and the rotor shaft connection are ensured in a simple manner. In this case, a positionally accurate positioning is preferably carried out both in the insertion direction or in the axial direction of the jacket, as well as with respect to a rotation of the motor module. In principle, however, only a positioning in the axial direction or with respect to the rotation is conceivable. The at least one guide element can be formed as desired. Preferably, the guide element can have or be in the surface of the jacket or a protruding from the surface component, in particular a rail or a guide for positive cooperation with a part of the motor housing, wherein the guide element is particularly preferably in the insertion direction.

Finally, a preferred development of the plug-in motor module according to the invention provides that a locking device is arranged on the jacket and / or on the inner cover of the motor module and / or on the motor housing of the hoist, which is particularly preferably by means of an actuating unit in the region of the outer cover or the outer front a plugged in a motor housing motor module operable, in particular unlocked, whereby a particularly simple separation of the pluggable motor module of the other components of the hoist is possible.

• 1 in mehreren perspektivischen Ansichten die Anordnung eines einsteckbaren Motormoduls in einem Motorgehäuse eines Hebezeugs,
• 2 eine perspektivische Schnittzeichnung des in 1 dargestellten einsteckbaren Motormoduls, und
• 3 eine perspektivische Ansicht des in 2 dargestellten einsteckbaren Motormoduls.

An embodiment of the device according to the invention is explained below with reference to the drawings. In the figures show:

• 1 in several perspective views the arrangement of a plug-in motor module in a motor housing of a hoist,
• 2 a perspective sectional view of the in 1 shown plug-in motor module, and
• 3 a perspective view of the in 2 shown plug-in motor module.

At an in 1 illustrated hoist 3 for hovering loads on a chain is the front of a motor housing 2 by means of a screw plug 18 attached engine cover 20 closed (see 1a .). Behind the engine cover 20 is a vane motor 4 of the hoist 3 arranged, the part of a in the motor housing 2 pluggable motor module 1 is. The motor module is located in the installation and operating position 1 completely within a receiving opening 19 of the motor housing 2 (see Fig. ib.).

The plug-in motor module 1 is as a closed unit from the motor housing 2 removable, the engine module 1 from a cylindrical housing 6 surrounded by a cylindrical shell 5 and an outer cover 11 as well as an inner lid 12 is formed (see Fig. ic.).

Inside the case 6 is the vane motor 4 as well as a brake unit 14 arranged (see Fig. Id.). The vane motor 4 has one inside the housing 6 rotatably arranged rotor body 8th on. To a rotation of the rotor body 8th to enable this is integral with a rotor shaft 7 formed eccentrically in the cylindrical housing 6 is arranged. Between the rotor shaft 7 and the outer or inner lid 11 . 12 is at both ends of the rotor shaft 7 a warehouse arranged. Furthermore, a plurality of slats are each in slat columns of the rotor body 8th guided so that it is a closed chamber between a surface of the rotor body 8th and the coat 5 form, wherein the volume of this chamber during a rotation of the rotor body 8th due to the eccentric arrangement in the housing 6 changed. The brake unit 14 has a brake piston 15 on and inside the engine module 1 between the outer lid 11 and the vane motor 4 the rotor shaft 7 surrounding arranged (see 2 ).

For transmitting the rotation of the vane motor 4 to one with a gearbox of the hoist 3 connected shaft 17 , points that to the inner lid 12 facing end of the rotor shaft 7 one from the outside A of the engine module 1 accessible rotor shaft connection 9 on. The rotor shaft connection 9 is formed as a socket, which is the hoist 3 in the area of the receiving opening 19 of the motor housing 2 arranged wave 17 can record such a positive fit that a rotation of the rotor shaft 7 over the wave 17 on a gearbox of the hoist 3 is transmitted. In this case, the rotor shaft 7 one out of the coat 5 protruding rotor shaft section 13 on top of a section of the inside lid 11 is surrounded radially (see 2 ).

On the exterior of the coat 5 is a guide element 16 arranged with corresponding sections of the motor housing 2 when plugging in the motor module 1 cooperates such that the engine module 1 in a correct orientation with respect to its rotation in the receiving opening 19 of the motor housing 2 is arranged. Here is the guide element 16 on the inner lid 12 arranged and has the shape of a protruding from the surface bolt, with a corresponding recess in the interior of the motor housing 2 can interact. The maximum insertion depth of the motor module 1 in the receiving opening 19 results from an at least partially installation of the inner lid 12 on the motor housing 2 , An exact orientation of the motor module 1 in the motor housing 2 is for the operation of the hoist 3 essential, as only with a correctly installed engine module 1 all connections 10 of the engine module 1 for the operating fluid with the corresponding connections of the motor housing 2 are arranged correspondingly and only allow such a necessary for the operation of free flow of the operating fluid.

LIST OF REFERENCE NUMBERS

1

plug-in motor module

2

motor housing

3

hoist

4

vane motor

5

coat

6

casing

7

rotor shaft

8th

rotor body

9

Rotor shaft connection

10

Operating fluid port

11

outer cover

12

Innendeckel

13

projecting rotor shaft section

14

brake unit

15

brake pistons

16

guide element

17

Another component

18

Screw

19

receiving opening

20

engine cover

A

outside

V

front

Claims (10)

Plug-in and replaceable motor module (1) for arrangement in a motor housing (2) of a hoist (3), with - A vane motor (4) with a jacket (5) as a stator, wherein - The casing (5) at least partially forms a housing (6) of the motor module (1) and - Within the housing (6) a driven by compressed air to a eccentrically in the housing (6) arranged rotor shaft (7) rotatable rotor body (8) is arranged with radially movable lamellae in lamellae, a rotor shaft connection (9) arranged on an outer side (A) of the motor module (1) on the rotor shaft (7), wherein the rotor shaft connection (9) is formed as a bushing around a lifting device (3) in the region of the receiving opening (19) of the motor housing (2) arranged to receive shaft (17) positively to thereby transmit the rotation of the vane motor (4) on the shaft (17), and - At least one further connection (10) on the motor module (1) for an operating fluid for driving the vane motor (4), wherein - The motor module (1) is formed such that it can be connected as a module with the motor housing (2) and that it is ready for use immediately after insertion into a receiving opening (19) of the motor housing (2) of the hoist (3). Plug-in motor module after Claim 1 , characterized in that the jacket (5) has a cylindrical shape and at one end on the jacket (5) an outer cover (11) and at the other end an inner lid (12) is arranged. Plug-in motor module after Claim 1 or 2 , characterized in that the rotor shaft connection (9) is formed in the region of a rotor shaft section (13) projecting through the inner cover (12), wherein the rotor shaft section (13) has a self-locking connection possibility. Plug-in engine module according to one of the preceding claims, characterized marked by a within the engine module (1) arranged brake unit (14) with at least one brake piston (15). Plug-in motor module according to one of the preceding claims, characterized in that the brake unit (14) on a rotor shaft connection (9) opposite side of the rotor shaft (7) is arranged. Plug-in engine module according to one of the preceding claims, characterized in that the brake unit (14) between the outer lid (11) and the rotor body (8) is arranged. Plug-in motor module according to one of the preceding claims, characterized in that all other connections (10) for an operating fluid for driving the vane motor (4) on the jacket (5) and / or all other connections for an operating fluid for operating the brake unit (14) one of the lid (11, 12) are arranged. Plug-in motor module according to one of the preceding claims, characterized in that on the jacket (5) at least one guide element (16) for positionally accurate positioning of the motor module (1) in the motor housing (2) is arranged. Hoist with a pluggable and replaceable motor module (1) according to one of the preceding claims, characterized by - a motor housing (2) with a receiving opening (19) for receiving the motor module (1), wherein - a shaft (17) of the hoist (3) is arranged in the region of the receiving opening (19) such that in a receiving position of the motor module (1) of the rotor shaft connection (9) with the shaft (17) engages to transmit the rotation of the vane motor (4), and wherein - at least one terminal for an operating fluid in the receiving opening (19) is arranged such that in a receiving position of the motor module (1) is a connection to the respective terminal of the motor module (1) for the operating fluid. Method for connecting a pluggable and replaceable motor module (1) in a motor housing (2) of a hoist (3), comprising the steps of: - aligning the motor module (1) in front of a receiving opening (19) of the motor housing (2) for receiving the motor module (1), - insertion of the motor module (1) in the receiving opening (19) and alignment of the motor module (1) with respect to its rotational position about its central longitudinal axis and / or with respect to the insertion depth along the direction of insertion, in particular by means of a on the motor module (1 When the operating position of the motor module (1) in the motor housing (2) at least one mechanical connection of a rotor shaft (7) of a vane motor (4) in the motor module (1) by means of a Rotor shaft connection (9) on a shaft (17) of the hoist (3) is produced, wherein the rotor shaft connection (9) is formed as a bush to the hoist (3) in the region of the receiving opening (19) of the motor housing (2) arranged shaft (17) to receive a positive fit to thereby transmit the rotation of the vane motor (4) on the shaft (17), and a pneumatic connection of at least one connection for compressed air for the operation of the vane motor (4) is made automatically, and wherein - the motor module (1 ) and the hoist (3) after insertion into the receiving opening (19) is ready for use immediately.

Images