Gear motor and chain type conveying equipment
By designing a reducer motor with a centered flange mechanism and forming a torque support area and an output flange on the reducer housing, the problems of inconvenient connection between the motor and the reducer and poor chain force transmission in the prior art are solved, and a chain conveying equipment with high precision connection and high working safety are realized.
Patent Information
- Application Number
- CN202311627966.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-11-30
- Publication Date
- 2025-05-30
AI Technical Summary
The reduction motor design of existing chain conveying equipment is difficult to achieve fast, simple and high-precision connection between the motor and the reducer, and it is difficult to effectively transmit chain force while high working safety and rapid replacement of chain links.
A reducer motor is designed, which has a reducer driven by a motor. By forming a center side on the reducer flange and centering with the flange on the motor side, a simple connection between the motor and the reducer is achieved. At the same time, by forming a torque support area and an output flange on the reducer housing, and connecting these areas with a support part and an intermediate strut, the enhanced transmission of the reaction torque is achieved.
It realizes fast, simple and high-precision connection between the motor and the reducer, ensures high working safety of the chain and the ability to quickly replace the links, while effectively transmitting chain force and improving the overall performance of the equipment.
Smart Images
Figure CN120057496A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a reduction motor, in particular for a chain conveyor device, and the chain conveyor device. Background Art
[0002] As is known to all, in a chain transmission, the chain is driven by a motor. Summary of the invention
[0003] It is therefore an object of the present invention to design a geared motor in a robust manner.
[0004] This object is achieved according to the invention by a geared motor according to the features specified in claim 1 and a chain conveyor device according to the features specified in claim 10 .
[0005] In a reduction motor, in particular a reduction motor for a chain conveyor, an important feature of the present invention is that the reduction motor has a reducer driven by the motor.
[0006] The reducer flange accommodates a bearing for rotatably supporting the input shaft of the reducer on the reducer flange, which is centered and oriented relative to the flange part on the motor side, in particular in that a centering edge is formed on the reducer flange, against which a centering flange of the flange part rests.
[0007] The advantage here is that a simple and quick connection of the motor to the reducer is achieved, wherein very precise alignment and centering can be achieved by means of the centering mechanism. In addition, the rotor shaft of the motor with its external toothing can be inserted into the internal toothing of the reducer input shaft, thereby enabling a low-force or even forceless connection.
[0008] In an advantageous embodiment, the torque support region and the output flange are formed in particular integrally on the reduction gear housing.
[0009] The support part and the intermediate support rod respectively connect the torque support area to the output flange.
[0010] The output flange receives the bearing of the output shaft of the reducer. The advantage here is that, despite the large play, an enhanced transmission of the reaction torque can be achieved. Although the torque support area can be formed in one piece on the reducer housing, an improved transmission of the reaction force from the output flange to the torque support area can be achieved directly via the support part connected to the output flange.
[0011] In an advantageous design, the crossbeam connects the intermediate strut to the support. Advantageously, in particular, reinforcement can be achieved simply and cost-effectively by means of the molding of the casting.
[0012] In an advantageous embodiment, the central strut is parallel to the axis of rotation of the rotor shaft. This has the advantage that the torque support region does not require additional axial structural length.
[0013] In an advantageous design, the angle values of the plurality of support portions relative to the middle strut are not zero, and in particular the angle values are of the same magnitude, but the angle values are in different directions. This has the advantage that improved reinforcement can be achieved.
[0014] In an advantageous design, the intermediate strut is arranged in a plane spanned by the support portion. This has the advantage that only a very small structural space is required.
[0015] In an advantageous embodiment, the crossbeam is arranged in a plane spanned by the support portion. This has the advantage that only a small amount of structural space is required.
[0016] In an advantageous embodiment, the distance between the supports increases with the distance from the output flange, in particular increases strictly monotonically. This has the advantage that effective reinforcement can be achieved without taking up unnecessary much structural space.
[0017] In an advantageous embodiment, the axial width of the torque support region, ie in particular the width of the torque support region measured in a direction parallel to the axis of rotation of the rotor shaft, decreases monotonically with increasing distance from the intermediate strut. This has the advantage that the torque support region can be designed to be compact.
[0018] In an advantageous design, the spring interconnects two areas of the reducer housing that are spaced apart from each other in the axial direction. Advantageously, the reducer is sufficiently rigid and can dampen vibrations despite the introduction of vibrations by the conveyor chain through the sprocket.
[0019] In a chain conveyor device, an important feature of the present invention is that the chain conveyor device has a chain, a sprocket and the above-mentioned reduction motor, the reduction motor has a motor and a reducer, the motor has an electromagnetically actuated brake on its side facing away from the reducer, the sprocket is connected to the output shaft of the reduction motor - in particular in a form-locking manner, the teeth of the sprocket engage in the chain links of the chain, in particular for conveying and holding the chain.
[0020] The subject matter of the invention also has the advantage that a quick and simple replacement of chain links can be ensured with high operating safety, since no special effort is required. Only the release lever and the chain stop device must be provided appropriately.
[0021] However, since the chain stop device is installed on the reduction motor, i.e., on the component forming the housing of the reduction motor, no special additional costs are required and, nevertheless, the chain force can be effectively transmitted. This is because during the replacement of the chain links, the chain force from the chain stop device must be transmitted to the sprocket via the reduction motor.
[0022] In an advantageous design, the chain stop device is fixed to the reduction motor and / or the chain is fixed at the first link of the chain by means of the chain stop device. The advantage here is that the chain force in the reduction motor can be directly guided to the sprocket.
[0023] In an advantageous design, the housing of the motor forms the housing for the brake and / or encloses the brake. The advantage here is that the brake does not require a separate housing and thus only requires little effort to form the housing for the brake.
[0024] In an advantageous design, the sprocket engages in the chain over a circumferential angle range greater than 90°, in particular and less than 180°. This circumferential angle range is based on the axis of rotation of the sprocket. The advantage here is that the chain is reliably held.
[0025] In an advantageous design, the brake has a magnet which has an annular recess into which an energizable annular winding is inserted.
[0026] In particular, the axis of the ring of the annular winding is coaxial with the axis of rotation of the rotor shaft.
[0027] The rotor shaft has an external toothing or is in particular non-rotatably connected to an annular drive member which is slipped onto the rotor shaft and has an external toothing by means of a key connection.
[0028] A disc-shaped brake pad carrier / brake block carrier is slipped onto the drive member and engages with its internal toothing in the external toothing of the drive member, in particular such that the brake pad carrier is axially displaceable.
[0029] An armature plate is arranged axially between the brake pad carrier and the magnet. The armature plate is non-rotatably connected to the magnet and is axially displaceable.
[0030] When the annular winding is energized, the armature plate is attracted to the magnet against the spring force exerted by a spring element which bears on the magnet and presses on the armature plate, such that the brake pad carrier can move freely.
[0031] In particular, when the annular winding is not energized, the spring element presses the armature plate against the brake pad carrier, so that the brake pad carrier is pressed against the braking surface on the side facing away from the magnet. The braking surface is formed on a flange member or on a plate member abutting against the flange member or on the housing of the motor.
[0032] The advantage here is that the brake automatically engages when power is cut off, i.e., it automatically switches to a safe state.
[0033] In an advantageous design, the release lever is connected to the axially movable pin via a rotational hinge, and / or,
[0034] the release lever is supported at a pivot point which is arranged on the flange of the motor or the bearing flange.
[0035] The pin passes through the magnet and through the opening of the armature plate, and is configured to widen or connected to a component for such widening on the side of the armature plate facing away from the magnet in such a way that the pin is axially restricted by means of the widening. The advantage here is that manual release can be achieved. In particular, the release lever can be brought into a rotational position in which the brake is released.
[0036] In an advantageous design, the release lever can be locked by the locking device of the brake, in particular locked to the magnet. The advantage here is that the safe state of the brake can be fixed.
[0037] In an advantageous design, the housing of the motor, especially formed in multiple parts, not only forms a housing for the motor stator but also forms a housing for the brake.
[0038] In particular, the release lever passes through the housing and extends into the surroundings of the motor. The advantage here is that the release lever can be detachably connected to the housing, i.e., especially can be locked to the housing.
[0039] In an advantageous design, the brake is arranged in the axial end region of the rotor shaft of the motor, facing away from the speed reducer. The advantage here is that sufficient free space is provided for operating the release lever.
[0040] In an advantageous design, a spring connects a first region of the speed reducer housing to a second region of the speed reducer housing.
[0041] In particular, the first region and the second region are axially spaced apart, especially spaced apart in a direction parallel to the axis of rotation of the rotor shaft.
[0042] In particular, the spring is arranged on the outer side of the speed reducer housing. The advantage here is that although the force conducted through the housing is large, the housing can still be stabilized and sufficient rigidity of the housing can be maintained. In particular, vibrations of the housing can be suppressed.
[0043] The advantage here is that the chain conveyor is designed to ensure the repair of the chain while maintaining high safety. To this end, the chain stop device can be fixed to the reduction motor, and the sprocket can withstand the chain tension and hold the chain by means of a reduction gear via a stop brake arranged on the rotor shaft of the motor driving the reduction gear.
[0044] Further advantages are given by the dependent claims. The invention is not limited to the feature combinations of the claims. For a person skilled in the art, other reasonable combination possibilities of the claims and / or individual claim features and / or the features of the description and / or the features of the drawings can be obtained, in particular from the stated objectives and / or from the objectives arising from a comparison with the prior art. Description of the Drawings
[0045] The present invention will now be described in detail with reference to the schematic drawings:
[0046] In Figure 1 a chain conveyor with a reduction motor according to the invention is schematically shown.
[0047] In Figure 2 a side view of the reduction motor is shown in section.
[0048] In Figure 3 a side view of the reduction motor is shown.
[0049] In Figure 4 an axonometric view of the reduction motor is shown.
[0050] List of Reference Signs:
[0051] 1 Chain
[0052] 2 Sprocket
[0053] 3 Output Shaft
[0054] 4 Chain Stop Device
[0055] 20 Input Shaft
[0056] 21 Support
[0057] 22 Reducer Flange
[0058] 23 Flange Piece on the Motor Side
[0059] 24 Rotor Shaft
[0060] 25 Bearing Flange
[0061] 26 Brake Pad Carrier
[0062] 27 Armature Plate
[0063] 28 Magnet
[0064] 29 Release lever
[0065] 30 Motor
[0066] 31 Reducer
[0067] 32 Spring
[0068] 40 Torque support area
[0069] 41 Intermediate strut Detailed implementation manner
[0070] As shown in the figure, the chain device has a reduction motor, and the output shaft 3 of the reduction motor drives the sprocket 2. The teeth of the sprocket are engaged in the recesses of the links of the chain 1, and thus the sprocket drives the chain 1.
[0071] Preferably, the chain 1 has a length greater than 20 meters and is used in mining equipment or mining equipment for transporting rocks, ores or coal.
[0072] The reduction motor has a motor 30, which drives the reducer 31. The output shaft of the reducer serves as the output shaft 3 of the reduction motor.
[0073] An electromagnetically operable brake is arranged on the end of the rotor shaft of the motor 30 axially facing away from the reducer. When the chain 1 is to be tensioned or re-tensioned, the brake functions as a stop brake for the rotor shaft 24.
[0074] To ensure operation, the brake can additionally be manually released. For this purpose, a release lever 29 is provided, and the brake is kept released by means of this release lever regardless of whether the brake coil is energized.
[0075] The brake has a magnet 28, which is made of ferromagnetic material and has an annular recess. The ring axis of the recess is coaxial with the rotational axis of the rotor shaft, and the recess faces the reducer and is open.
[0076] An energizable annular winding is embedded in the annular recess of the magnet 28 and is sealed and potted with filler.
[0077] An annular carrier member is sleeved on the rotor shaft. The carrier member has an external tooth portion, which meshes with the internal tooth portion of a brake disc carrier 26 sleeved on the carrier member. The carrier member and the rotor shaft are preferably connected in a non-rotatable manner by means of a key connection. The brake disc carrier 26 is arranged on the carrier member in a manner that it can move axially.
[0078] The armature plate 27 is made of ferromagnetic material and is arranged axially between the brake disc carrier 26 and the magnet 28.
[0079] When the annular winding is energized, especially the armature plate 27 that is non-rotatable relative to the magnet 28 but axially movable, for example, by passing a pin fixed in the magnet 28 through an opening in the armature plate 27, is attracted towards the magnet 28 against the spring force generated by the spring element supported in the magnet 28. When the annular winding is de-energized, the spring element presses the armature plate 27 against the brake pad carrier 26, so that the brake pad carrier 26 is pressed against the braking surface on the side facing away from the armature plate 27, and this braking surface is formed on the bearing flange or on a component connected to the bearing flange.
[0080] The release lever 29 is pivotally supported on the magnet 28 or on a component connected to the magnet 28 relative to the pivot point, so that the release lever causes the pin to move linearly in the axial direction during its rotational movement.
[0081] The pin passes through a notch in the magnet 28 and through an opening in the armature plate 27. Here, the pin widens on the side of the armature plate 27 facing away from the magnet 28 and thus pulls the armature plate 27 towards the magnet 28 when the release lever is actuated, wherein when the release lever 29 is actuated, the spring force generated by the spring element is overcome, even when the annular winding is de-energized. Thus, manual release can be achieved. The engagement of the brake is only achieved when the armature plate 27 is released by a corresponding rotational position of the release lever 29, because when the release lever 29 rotates, the pin moves in the axial direction and presses the armature plate 27 towards the magnet 28 here.
[0082] For this purpose, the pin widens in its end region facing away from the magnet 28, especially such that the widened end region of the pin abuts against the armature plate 27 and does not slip through the opening in the armature plate 27.
[0083] Before tensioning or re-tensioning the chain 1, the reduction motor is first switched off, that is, the chain 1 is brought to zero speed.
[0084] Then, the chain 1 is detachably connected to the fixed part of the device at one of its links by means of the chain stop device 4, so that the chain 1 cannot move further here. Preferably, the chain stop device 4 is mounted on the reduction motor, especially between the reduction gear and the motor, so that the chain 1 is stopped by means of the chain stop device 4 and is detachably connected to the housing of the reduction motor.
[0085] After the reduction motor has stopped and the chain 1 has also stopped, the brake is activated. This is achieved on the one hand by actuating the release lever 29 and additionally by de-energizing the coil of the brake. Thereby, the brake engages and thus prevents the rotational movement of the rotor shaft, and this rotational movement also stops the rotational movement of the output shaft 3 of the reduction gear 31 through the reduction gear 31.
[0086] In this way, the chain 1 can be repaired between the sprocket 2 and the chain stopping device 4. For example, chain links of the chain 1 can be changed, ie replaced, in this region even when the remaining region of the chain 1 is under load.
[0087] Chain tension can thus be built up.
[0088] After the chain links have been installed, the chain 1 can be fully engaged again. The chain arresting device 4 is then disengaged from the chain 1 and the chain 1 is subsequently released and the brake is also released by energizing the brake coil and actuating the release lever 29 .
[0089] The motor is directly flange-connected to the reducer and centered there. This direct flange centering can save coupling devices and thus shorten the overall length. Flange centering makes it possible that only the reducer flange 22 on the reducer side must be configured with corresponding centering means and no further adaptation is required on the motor side.
[0090] Due to the rotor shaft with external teeth (which only needs to be inserted into the internal teeth of the reducer input shaft when connecting the motor to the reducer), a force-free or at least low-force flange connection of the motor to the reducer can be achieved.
[0091] Furthermore, the reducer flange 22 is stabilized by casting the torque support region 40 onto the reducer flange 22, i.e., in particular by forming the reducer flange 22 in one piece with the torque support region 40. The torque support region 40 is connected via the supports 21 and the intermediate struts 41 arranged between the supports 21 to the output flange of the reducer, which receives the bearing of the output shaft of the reducer.
[0092] The intermediate strut 41 is parallel to the rotation axis of the rotor shaft of the electric machine. The support portion 21 is inclined relative to the intermediate strut 41 , in particular wherein the support portion has an angle with respect to the intermediate strut 41 that is not zero.
[0093] Here, the angles of the support portion 21 with respect to the intermediate stay 41 are equal in absolute value (magnitude) but have different signs (directions).
[0094] The support part 21 spans a plane in which the middle strut 41 is also located.
[0095] The end regions of the support 21 and the intermediate strut 41 facing the motor are connected by means of a torque support region 40. The other end region also opens into an output flange which receives a bearing for rotatably mounting the output shaft.
[0096] Axially, that is to say in the direction of the axis of rotation of the rotor shaft of the electric machine, a crossbeam arranged between the torque support region 40 and the output flange connects the support 21 to the intermediate strut 41.
[0097] Accordingly, the torque support, that is in particular the torque support region 40, is rigidly connected to the output flange.
[0098] In order to further strengthen and / or damp resonance, a spring 32 is provided which connects two regions spaced apart from one another in the axial direction.
[0099] The rotor shaft 24 is rotatably supported by means of a bearing received in the bearing flange 25.
[0100] In other embodiments according to the invention, the chain stop device 4 is mounted at a different location such that a longer section of the chain between the sprocket 2 and the chain stop device 4 can be replaced.
[0101] It is also possible in other embodiments according to the invention that, after the chain stop device 4 has been installed, the reduction gear motor is first operated at a very low speed in order to tension the chain 1 in the conveying region and only then is the brake activated in order to maintain the chain tension thus achieved, while one or more links in the region of the chain 1 between the chain stop device 4 and the sprocket 2 are replaced and / or exchanged.
[0102] The brake is arranged in the motor housing. The brake is thus surrounded and protected by the motor housing.
[0103] The input shaft 20 of the reduction gear has external teeth in the end region facing the electric machine and / or the brake, and the external teeth of the input shaft 20 engage in the internal teeth of the rotor shaft 24. Higher torques can thus be transmitted and alignment errors of the shaft 20 relative to the rotor shaft 24 can be compensated for. For this purpose, the teeth of the internal teeth and / or the teeth of the external teeth are preferably configured spherically.
[0104] In order to align the axis of rotation of the input shaft 20 as precisely as possible with the axis of rotation of the rotor shaft 24 when the electric machine 30 is connected to the reduction gear 31, the reduction gear flange 22 which receives the bearing for rotatably supporting the input shaft on the reduction gear flange is centered and oriented relative to the motor flange, that is the flange part 23, in such a way that a centering edge is formed on the reduction gear flange 22 and the centering flange of the flange part 23 abuts against this centering edge. High-precision orientation can be achieved in this way. The toothing coupling formed by the internal teeth and the external teeth compensates for the remaining tolerances.
[0105] As Figure 2As shown, a spring 32 mounted on a speed reducer connects two regions of the housing of the speed reducer 31 that are spaced apart from each other in the axial direction, that is, in particular, in the direction of the axis of rotation of the rotor shaft of the electric motor 30. In this way, resonance can be suppressed and the stability and rigidity of the speed reducer 31 can be improved.
[0106] In a circumferential angle range that is, in particular, greater than 90° and, in particular, less than 180° relative to the axis of rotation of the sprocket 2, the sprocket 2 engages with the chain 1. Thus, even when the chain region is tensioned, it is possible to remove the link to be replaced.
Claims
1. A reduction motor, in particular a reduction motor for a chain conveyor, The reduction motor has a reducer driven by the motor. It is characterized in that The reducer flange (22) receives a bearing for rotatably supporting the input shaft (20) of the reducer on the reducer flange (22), which is centered and oriented relative to the flange part (23) on the motor side, in particular in that a centering edge is formed on the reducer flange (22) and a centering flange of the flange part (23) rests on the centering edge.
2. The reduction motor according to claim 1, It is characterized in that The torque support area and the output flange are formed on the gear unit housing, in particular integrally, The support part (21) and the intermediate support rod (41) respectively connect the torque support area with the output flange, and the output flange receives the bearing of the output shaft of the reducer.
3. A geared motor according to any one of the preceding claims, It is characterized in that The cross beam connects the middle support rod (41) and the support part (21).
4. A geared motor according to any one of the preceding claims, It is characterized in that The middle support rod (41) is parallel to the rotation axis of the rotor shaft, and / or, The angle values of the supporting parts (21) relative to the middle support rod are not zero, in particular, the angle values are the same in size, but the directions of the angle values are different.
5. A geared motor according to any one of the preceding claims, It is characterized in that The middle strut is arranged in a plane spanned by the support portion (21).
6. A geared motor according to any one of the preceding claims, It is characterized in that The cross beam is arranged in a plane spanned by the support portion (21).
7. A geared motor according to any one of the preceding claims, It is characterized in that The distance between the supports (21) increases with increasing distance from the output flange, in particular increases strictly monotonically.
8. A geared motor according to any one of the preceding claims, It is characterized in that The axial width of the torque support region, ie in particular the width of the torque support region measured in a direction parallel to the axis of rotation of the rotor shaft, decreases monotonically with increasing distance from the central strut.
9. A geared motor according to any one of the preceding claims, It is characterized in that The spring connects two areas of the retarder housing which are spaced apart from one another in the axial direction to one another.
10. A chain conveyor device, It is characterized in that The chain conveyor device comprises a chain, a sprocket and a reduction motor according to any one of the preceding claims, The electric motor of the geared motor has an electromagnetically actuated brake on its side facing away from the gearbox of the geared motor. The sprocket is connected to the output shaft of the geared motor, in particular in a form-locking manner. The teeth of the sprocket mesh with the chain links of the chain and serve, in particular, to convey and hold the chain.
11. The chain conveyor device according to claim 10, It is characterized in that The chain stopper is fixed on the reduction motor. and / or, The chain is fastened to the first chain link of the chain by means of a chain stopper which is fixed to the reduction motor.
12. Chain conveyor device according to any one of the preceding claims, It is characterized in that The reduction motor has an electric motor, and the housing of the electric motor forms the housing for the brake and / or surrounds the brake.
13. The chain conveyor device according to any one of the preceding claims, characterized in that the brake has a magnet, the magnet has an annular recess, and an energizable annular winding is embedded in the recess, in particular, the annular axis of the annular winding is coaxial with the rotational axis of the rotor shaft, the rotor shaft has an external tooth portion or is connected in a non-rotatable manner, in particular by means of a key connection, to an annular driving member that is sleeved on the rotor shaft and has an external tooth portion, a disc-shaped brake pad carrier is sleeved on the driving member and meshes with the external tooth portion of the driving member with the internal tooth portion of the brake pad carrier, in particular such that the brake pad carrier can move in the axial direction, an armature plate is arranged in the axial direction between the brake pad carrier and the magnet, the armature plate is connected to the magnet in a non-rotatable manner and can move in the axial direction, when the annular winding is energized, the armature plate is attracted towards the magnet against the spring force generated by a spring element supported on the magnet and pressing on the armature plate, such that the brake pad carrier runs freely, in particular, when the annular winding is not energized, the spring element presses the armature plate against the brake pad carrier, so that the brake pad carrier is pressed against a braking surface on the side facing away from the magnet, and the braking surface is formed on a flange member or on a plate member abutting against the flange member or on the motor housing.
14. The chain conveyor device according to any one of the preceding claims, characterized in that the sprocket engages into the chain over a circumferential angle range greater than 90°, in particular and less than 180°, and / or, the release lever is connected to an axially movable pin by means of a rotary hinge, and / or, the release lever is supported at a pivot point that is arranged on the flange member or bearing flange of the motor, the pin passes through the magnet and through an opening in the armature plate, and is configured in a widened manner or connected to a component for such widening on the side of the armature plate facing away from the magnet, such that the pin is axially restricted by means of the widened portion, and / or, the release lever can be locked by a locking device of the brake, in particular locked to the magnet.
15. The chain conveyor device according to any one of the preceding claims, characterized in that the housing of the electric motor, which is particularly formed in multiple parts, forms the housing not only for the electric motor stator but also for the brake, in particular, the release lever passes through the housing and extends into the surroundings of the electric motor, and / or, the brake is arranged in the axial end region of the electric motor rotor shaft facing away from the speed reducer, and / or, a spring connects a first region of the speed reducer housing to a second region of the speed reducer housing, in particular, the first region and the second region are axially spaced apart, in particular spaced apart in a direction parallel to the rotational axis of the rotor shaft, in particular, the spring is arranged on the outer side of the speed reducer housing.