Turning drive

FIELD: mechanical engineering.

SUBSTANCE: invention can be used in devices designed for providing turns in horizontal or vertical planes. Proposed turning drive contains motor with brake, reduction gear, friction mechanism to limit maximum torque on reduction gear shaft and differential mechanism, all mounted on support and turnable (movable) parts of object. Motor is connected with input shaft of reduction gear on output shaft of which ring main gear is secured, being in meshing with gear rim. Differential mechanism is made in form of planetary train with epicyclic gear, sun gear, carrier and planet pinions. Sun gear is connected with motor shaft, carrier is connected with input shaft of reduction gear, and epicyclic gear is mechanically coupled with said friction mechanism through gearing.

EFFECT: improved dynamic and service characteristics of turning drive.

9 cl, 4 dwg

 

The invention relates to mechanical engineering and can be used in devices designed to implement pivoting movement in a horizontal or vertical plane, in particular in devices for turning platforms jib cranes, drives rotation launchers weapon type torpedo.

Known to drive rotation of a tower crane according to patent RU 2232127 C1, WS 23/84, 2004 Known swing drive contains mounted on the bracket mounted on the rotary platform of the crane, the engine braking device and the gearbox. While the engine is connected with the input shaft of the gear on the output shaft which enshrines the fundamental gear that is in mesh with a toothed rim mounted on the rotary device. The brake device is made with the possibility of installing a handle for turning the turntable manually during transportation, operation and dismantling.

However, the known drive rotation does not suggest a safety device for limiting the transmitted torque and protect the parts from damage when possible overloads in excess of the allowable strength conditions.

Also there are many drives (lifting mechanism), containing a geared motor and a safety device, the condition is set out directly on the input, high-speed shaft of the reducer (see, for example, Alexandrov M.P. Lifting-transport machines. Ed. 4-E. Textbook for high schools. M., "Higher school", 1972, s-214, is on s). As a safety device known actuators contain disk friction clutch Assembly.

However, a large moment of inertia of the safety device to be installed directly on the high-speed input shaft of the gearbox, leads to a significant increase in moment of inertia reduced to the motor shaft, which degrades the dynamic performance of the drive.

The closest to the technical nature of the claimed invention is a swing drive diesel-electric crane KDE-161, containing mounted on the supporting and rotating (moving) parts of the object, engine braking device, gearing, friction mechanism to limit the maximum torque on the input shaft and the gear element while the engine is connected with the input shaft of the gear on the output shaft which enshrines the fundamental gear that is in mesh with the toothed element (peasants VI, Rednikov, VA cranes rail move: a Textbook for technology. schools W.-D. transport. - 4th ed., revised and enlarged extra - M.: Transport, 1978, s, RES).

However, the known drive rotation has a relatively low Dina is practical features.

The problem solved by the invention is the creation of drive rotation, providing the opportunity to improve the dynamic characteristics of the actuator and rotate together with the enable safe mode manual drive without using the clutch switch and locks.

This problem is solved due to the fact that the drive rotation, containing mounted on the support and rotatable parts of the object, engine braking device, gearing, friction mechanism to limit the maximum torque on the input shaft and the gear element while the engine is connected with the input shaft of the gear on the output shaft which enshrines the fundamental gear that is in mesh with the toothed chain according to the invention includes a differential mechanism in the form of a planetary gear set having epicycle gear, sun gear, carrier and satellites. This sun gear connected with the motor shaft, pinion carrier connected to the input shaft of the gearbox, and epicycle gear with gear kinematically connected with the said friction mechanism.

With this as a friction drive mechanism rotation contains a friction clutch comprising friction elements, one of which is stationary and the other is settled and the shaft, which is kinematically connected with the mentioned gear with epicycle gear. The latter (i.e. shaft) is associated with a leash with element mesh, made interoperable with the corresponding element of the mesh, removable handle, used to work in manual mode actuator. A friction clutch is arranged to open its frictional elements when operating in the manual mode of the drive.

In addition, as the timing link swing drive comprises a gear rim.

In another embodiment, the as toothed link swing drive comprises a gear sector.

Together with this, the engine braking device, gearing, friction and differential mechanisms can be mounted on the rotary part of the object, and a gear element on the supporting part of the object.

In another embodiment, the engine braking device, gearing, friction and differential mechanisms are mounted on the supporting part of the object, and a gear element on the movable part of the object.

The timing link is located in the horizontal plane. When you drive rotation provides rotary movement in a horizontal plane.

In another embodiment, the toothed element is located in a vertical plane. In this implementation the attachment actuator rotation provides rotary movement in a vertical plane.

With this gearing, friction and differential mechanisms are housed in a single package.

The technical result of the use of the invention is that it provides improved dynamic and operational characteristics of the actuator rotation.

Figure 1 shows the kinematic diagram of the drive rotation; figure 2 - device differential drive mechanism rotation, longitudinal section (engine conventionally not shown); figure 3 - the device of the friction drive mechanism rotation, longitudinal section; figure 4 - location of the projection (tenon) of lead, used to work in manual mode actuator, relative to the master drive in the operating condition of the friction mechanism, the section a-a figure 3.

In the embodiment of the invention, the actuator rotation comprises a gear rim gear link) 1, which is mounted on the rotating (moving) part 2, installed via the supporting device 3, made for example in the form of a roller radial bearing with intersecting axes of the cylindrical rollers, the supporting part 4. At last also mounted a motor (e.g. electric motor) 5 with the brake device 6, the gear 7, and the friction 8 and 9 differential mechanisms. In the embodiment of the invention, the gear 7, the friction and differential mechanisms 8, 9 RA is medeni in a single housing 10. The engine 5 is kinematically connected to the input shaft 11 of the reduction gear 7. The transmission of the torque from the motor shaft is made through the differential mechanism 9. On the output shaft 12 of the gear 7 fixed fundamental gear 13 which engages with a toothed rim (toothed link) 1. In the embodiment of the invention, the actuator rotation provides rotary movement in a horizontal plane.

In other embodiments, execution (not shown) as a timing element 1 actuator rotation may include a toothed sector, for example, when it is not required to provide full rotation (i.e. rotation) of the rotating part relative to the vertical axis, or in a variant, when the actuator provides rotary motion (essentially a swing in a vertical plane and the timing link is located in the vertical plane.

Possible implementation, when the engine 5 with the brake device 6, the gear 7, the frictional 8 and 9 differential mechanisms are mounted on a support (static) part of the object, and the toothed rim gear link) 1 - on the turning (moving) parts of an object (not shown).

The differential mechanism 9 is made in the form of a planetary gear set having epicycle gear 14, the sun gear 15, drove 16 and 17 satellites. The sun gear 15 is connected with the shaft 18 of the engine in the I 5. Led 16 is connected to the input shaft 11 of the reduction gear 7. In an embodiment as a friction mechanism 8 swing drive includes a friction clutch comprising friction elements or disks 19 and 20. The friction elements 19 is fixed in the holder 21 mounted stationary relative to the housing 10. The friction elements 20 mounted on the sleeve 22, is installed using a slotted connection with the possibility of longitudinal movement on the shaft 23. On the last fixed gear 24 which engages with the gear 25 made, for example, in one piece with epicycle gear 14. Thus, the epicycle gear 14 is kinematically connected with a friction mechanism (clutch) 8. Essentially epicycle gear 14 of the planetary gear is held by the brake (friction mechanism that limits the maximum torque on the input shaft 11 of the gear and thereby perform the function of the safety device.

The shaft 23 at one end is connected to a lead 26 with item 27 of the engagement made with the possibility of interaction with the corresponding (response) element 28 of the removable engagement of the arm 29, which is used to work in the manual mode of the drive.

The friction clutch 8 is made with the possibility of disconnection of the friction elements 19 and 20 when operating in the manual mode of the drive. To do this all in iante the invention, the shaft 23 provided with a stop 30, interacting with the disc support 31 and installed using the spline at the end of the shaft 23, the leading disk 32 having tapered sockets (holes) for the intermediate balls 33, and the supporting disc 34 with a glass 35 and the cylindrical spring 36 mounted inside the Cup 35 between the body of the last disc and a support 31. The force of the preload spring 36 is regulated by the nut 37. In the embodiment of the invention, the stop 30 is made, for example, in the form of a split ring. The leash 26 simultaneously serves as a support shaft 23 and has a flange "b", made with spaced evenly around the circumference, for example, three cylindrical holes intermediate the balls 33, and the projection (tenon), enters into the hollow "d", performed on the master disk 32. In the absence of external influences on the leash 26 intermediate the balls 33 installed in the holes in the flange "b" leash, are in corresponding conical holes (holes) "and"executed on the master disk 32, and have a certain freedom of movement (along the longitudinal axis of the respective hole).

Swing drive works as follows.

In the operating condition of the friction mechanism (safety devices) 8 cylindrical spring 36, leaning over the platter bearing 31 and the split ring (focus) 30 on the shaft 23, through the body of the Cup 35 simethicone elements (disks) 19, 20, mounted respectively on the fixed yoke 21 and the sleeve 22 is moved along the spline shaft 23. The force of compression cylindrical springs 36 is regulated by the nut 37. The torque transmitted from the sun gear 15, drove 16 causes a corresponding point on the epicycle gear 14, which through gears 25 and 24 is transmitted to the shaft 23 and held by a friction mechanism, the outer friction elements or disks 19 which are splined connection with the yoke 21, and the internal friction elements (disks) 20 through the sleeve 21 with the shaft 23. Upon reaching the maximum allowable torque (friction torque of the friction clutch) shaft 23 starts to rotate, thereby limiting the torque of the input shaft 11 of the reduction gear 7.

Under normal operating conditions, i.e. when the specific project normal (accident-free) conditions, the moment of resistance to rotation of the rotating part 2 with the toothed rim 1 is transmitted to a radical gear 13 fixed to the output shaft 12 of the gear 7. On the input shaft 11 of the reduction gear 7 comes a moment that through planetary gearing including a carrier 16, 17 satellites, epicycle gear 14 and the sun gear 15 is transmitted to the shaft 18 of the engine 5. This epicycle gear 14 remains stationary, since during normal operation the time of retention epicyclical the second gear clutch (friction mechanism) 8 given gear pair, including gears 24 and 25, more of the time of actuation of the friction clutch shown to epicycle gear. Thus, in normal operation, the drive of the rotation elements of the friction clutch 8 were removed from the chain drive and their moments of inertia does not affect the normal operation of the latter.

When increasing the torque on the shaft 18 of the engine 5 (for example, when excess to drive starting torque), the torque on the epicycle gear 14 is greater than the torque of the friction clutch 8 with regard toothed gear comprising gears 24 and 25. When this occurs, the rotation shaft 23 of the friction mechanism (friction clutch) 8 thus, the torque on the input shaft 11 of the reduction gear 7 does not exceed the allowable values.

Thus, by reducing the moment of inertia reduced to the motor shaft, the drive rotation provides improved dynamic performance.

To work in manual mode actuator on the shank of the leash 26 installing removable handle 29. During the rotation of the removable arm 29, i.e. in the Annex to the lead 26 of the torque, the leash 26 "rolling out" smart balls 33 of the slots (holes) "and" master disk 32. Intermediate balls 33, interacting with the support surfaces of the master drive 32 and the supporting disc 34, press the spring-loaded Cup 35 of the sleeve 22. Open the frictional elements (CI is CI) 19 and 20 of the friction clutch. In the disconnection of the friction elements of the shaft 23 is released from fixation relative to the housing 10. Thus, when the manual actuator of the friction clutch is automatically disabled at the beginning of the rotation of the lead 26 by compression springs 36 Cup 35, which is moved by the rotation bodies (intermediate balls) 33, "vymatyvanii" of the holes (slots) "and" master disk 32. After the rotation of the lead 26 through projection (tenon), interacting with the wall of the hollow "d"is transmitted to the host disk 32 provided by the splined connection at the end of the shaft 23, and hence the shaft 23. Starts to rotate the gear 24, transmitting motion through the gear 25 on the epicycle gear 14 of the planetary gear and then through the input shaft 11 of the reduction gear 7 on the fundamental gear 13. The shaft 18, which is fixed to the sun gear 15, is retained by the motor 5 or braking device 6. Limitation of torque in manual mode actuator is, for example, the ball slipping device removable arm 29 (not shown). At the end of the operation manual drive Cup 35 and the lead 26 with cylindrical springs 36 again occupy its original position and the elements (s) 19, 20 come into frictional interaction. As a result, the shaft 23 is braked and samematerial epicycle gear 14 of the planetary gear from rotation. Thus, due to the constructive combination of the manual drive device limit the transmitted torque of the drive rotation ensures safe operation in manual mode actuator without requiring additional switching devices and locks, which improves performance.

Thus, due to the performance characteristics of the actuator rotate the invention allows to create a drive of rotation, and improved dynamic performance. In addition, when the security mode of the manual actuator the invention does not require additional switching devices and locks, making it easier to drive rotation and improves performance.

1. Swing drive containing mounted on the support and rotatable parts of the object, engine braking device, gearing, friction mechanism to limit the maximum torque on the input shaft and the gear element while the engine is connected with the input shaft of the gear on the output shaft which enshrines the fundamental gear that is in mesh with the toothed element, characterized in that it contains a differential mechanism in the form of a planetary gear set having epicycle gear, sun gear, carrier and satellites, when it is a sun gear connected with the motor shaft, drove connected to the input shaft of the gearbox, and epicycle gear with gear kinematically connected with the said friction mechanism.

2. The actuator according to claim 1, characterized in that the friction mechanism, it contains a friction clutch comprising friction elements, one of which is stationary and the other is installed on the shaft, which is kinematically connected with the mentioned gear with epicycle gear, while the latter is connected with a collar, provided with engagement element, configured to interact with a corresponding element of the mesh, removable handle used for the operation of the manual actuator, and a friction clutch is arranged to open its frictional elements when operating in the manual mode of the drive.

3. The actuator according to claim 1, characterized in that as the gear level it comprises a gear rim.

4. Swing drive according to claim 1, characterized in that as the gear level it comprises a gear sector.

5. The actuator according to claim 1, characterized in that the engine braking device, gearing, friction and differential mechanisms are mounted on a rotary part of the object, and a gear element on the supporting part of the object.

6. The actuator according to claim 1, characterized in that the engine braking device is, gear, friction and differential mechanisms are mounted on the supporting part of the object, and a gear element on the rotary part of the object.

7. The actuator according to claim 1, characterized in that the toothed element is located in the horizontal plane.

8. The actuator according to claim 1, characterized in that the toothed element is located in a vertical plane.

9. The actuator according to claim 1, characterized in that the gear, friction and differential mechanisms are housed in a single package.



 

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