JP3891470B2 - Device for rotatably coupling two coaxial connecting elements - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention comprises a rotary bearing formed as a single row or multiple row roll bearing with a connecting element to accommodate axial and radial loads and tilting moments;
A drive coupled to or connectable to both connection elements so as to cause a relative rotational movement of the connection element, the frame of the drive being fixed to the first connection element, while the drive The front end of the toothed connection element so that the rotor is connected to a pinion or worm, the pinion or worm meshes with the teeth on the casing side of the second connection element and fixes the connection element to the first machine part There is provided a locking means in the form of a crown in the part, which locking means is arranged between the teeth and the rotary bearing, and relates to a device for rotationally coupling two coaxial connecting elements.
[0002]
[Prior art]
Such rotary connection devices are commercially available as so-called ball bearing slewing rims, which are available in various diameters and heights (installation heights) so that the correct rotary connection can be selected for each specific application. It can be done.
[0003]
Preferred applications include construction and construction machinery such as excavators, drilling machines as well as cranes, leaf flange bearings used in large wind farms, and tower structure bearings, transport, lifting and loading / unloading Equipment, lifting platforms, scaffolding and vehicle cranes, heavy-duty transporters, marine cranes, turntables for machine tools, eg rotating carousels used in bottling factories, medical equipment, tail rotating collars for timber collectors, amusement parks For example, vehicle equipment.
[0004]
In many of these applications, it is important that the overall height of the rotating device be as low as possible. The reason is that the overall height of the ball bearing slewing ring is rarely higher than the gear height of the connecting part of the rotary connection device that is actually driven by the motor. Protected from excessive wear and tearing, but no proper protection measures have been taken for the teeth, and thus the teeth are not suitable for operation during harsh conditions such as in construction sites. Foreign objects can then enter and then these foreign objects can enter the gap between the teeth and the gear element, for example, the pinion or worm meshing with the teeth, which can cause wear or damage to the tooth profile. It is.
[0005]
The risk of damage to the tooth profile occurs especially when hard materials such as stones or rocks enter or at the corners of hard metal formed in the machine tool. Considering the entry of dust particles into the tooth area, the lubricating grease is also quickly contaminated, so the lubricating grease must be replaced in a short time. Finally, unprotected teeth can be a potential cause for injury to, for example, maintenance staff.
[0006]
[Problems to be solved by the invention]
Accordingly, the present invention eliminates the above-mentioned drawbacks of the prior art, prevents damage to the tooth area due to the intrusion of foreign matter as much as possible, increases the interval for injecting the lubricating oil into the tooth area as much as possible, and risk of injury. It is an object of the present invention to provide an improved rotary connection device of the above-mentioned comprehensive type.
[0007]
[Means for Solving the Problems]
The task comprises a housing part surrounding at least the teeth of the second connection element, which is connected to a toothless connection element, which is at the front end opposite to the connection / fixing means. A fixing means for fastening the toothless connection element to the second bearing part directly surrounds the toothed connection element and prevents the majority of the housing part according to the invention from receiving a force. It can be solved by the device arranged in the.
[0008]
According to the invention, two connecting elements arranged coaxially with each other are normally displaced slightly in the axial direction, while each connecting bore is preferably axially displaced, preferably spaced from the other connecting elements. The fact that it is arranged at the front end of the connecting element is used.
[0009]
On the other hand, the housing of the drive motor is connected to a toothless connection element, which is therefore generally fixed to the frame of the corresponding machine, stationary or to a larger machine part. Thus, the present invention secures the housing that protects the teeth against the toothless connection parts, despite being substantially close to the toothless connection parts, and thus preferably has two sides of the cross section, preferably The geometric shape is advantageously used so as to enclose the entire rotating part on three sides and to eliminate as much external influences as possible.
[0010]
The toothed connecting element provided on the bore for connecting the rotating parts, or the end thereof, is accessible from the outside but is likewise covered by the installed housing.
[0011]
The housing according to the present invention protects this region so that dust particles do not enter the toothed region, prolongs the service life, and at the same time protects the lubricating grease from impurities. This can increase the time required for the maintenance, and finally, the staff can be protected so that the maintenance or repair staff does not unintentionally touch the device parts.
[0012]
Both of these are achieved within an optimally configured structural equipment framework, so users do not need to install separate housing parts, and at the same time, the construction of relatively large units is greatly simplified. The Since the fixing element of the toothless connection part is arranged directly on this toothless connection part, the housing can be designed to be relatively thin in cross section without being subjected to torque and other forces. In this way, the size of the structure, in particular the overall height, can be minimized on the one hand and the weight can be reduced on the other hand.
[0013]
Preferably, not only the machining to remove the metal, but also the connecting element / base member itself is produced by a joint molding operation, for example a sintering process, to the teeth for the second connecting element roll bearing and the guide passage. I know that.
[0014]
In this way, on the one hand, the entire toothed connecting element can be manufactured in one part, so that the manufacturing process can be simplified and on the other hand the stability of the toothed connecting element is improved, so that it can be transmitted axially and Not only radial force but also tilt and driving moment can be increased.
[0015]
Furthermore, it is also possible to produce a fixed bore of the second connection element from the connection element / base part by machining to remove the metal. Furthermore, it is of course possible to place the teeth in a separately manufactured structural part and then connect the structural part to the corresponding connecting element by a second process step, for example pressing or bolting.
[0016]
Within the scope of the invention, it is possible to form one or both of the connecting elements as a concentric ring or disk with a fixing element, in particular a bore, arranged like a crown or collar. Since large forces and moments must be transmitted, a large number of roll bearing elements are required which require slewing bearings of corresponding diameters. Thus, in order to save material, one or both of the elements can be provided with a central recess through which non-rotating parts, supply lines, etc. can be passed.
[0017]
The fixed bore can be formed as a continuous recess with or without an internal thread, or as a blind hole with an internal thread. If the front end of the toothed connecting element is surrounded by a housing part according to the invention, it is recommended to use a bore with a female thread, since the front end facing the connection surface is not accessible. To do.
[0018]
This feature of the invention can be further developed by configuring the toothed connecting element as a crown provided with an internal or external thread. In the embodiment with the connecting element teeth on the casing side, the maximum drive moment can always be transmitted, regardless of the setting of the rotation angle of the toothed connecting element, so that the overall height can be reduced to a minimum value if necessary.
[0019]
If the rolling body / guide passage of the toothed connecting element is arranged on the casing surface facing the teeth, the overall height can be further reduced. In this case, most of the total height of this connecting element, which determines the height of the toothed area, is available for the roll bearing.
[0020]
Since the radial length of the fixed bores of the toothed connecting element relative to the base of the rolling body / guide passage of the toothed connecting element corresponds approximately to the radial length of these bores from the base of the tooth, It is possible to prevent the connecting element from being weakened excessively locally.
[0021]
Different structural features serve the same purpose. That is, the fixed bore of the toothed connecting element is open as a blind hole that opens exclusively at the connection / front end and whose axial parallel depth is between 1/2 and 3/4 of the total height of the toothed connecting elements. It serves the purpose of constructing.
[0022]
This feature can be further developed. In other words, as a result of the built-in guide passage for the roll bearing, the fixed bore floor of the toothed connection element can be positioned at approximately the height of the largest protrusion or taper of the toothed connection element. In this way, the guide path of the roll bearing maintains the maximum distance from the fixed bore, so that the toothed connection part of the toothed connection element is not subject to the risk of deformation due to the action of a large radial force. The radial extension length, and therefore its weight, can be reduced to a minimum value.
[0023]
Another advantage of the features of the present invention is that the housing part fixed to the toothless connection element extends as an annulus parallel to the toothed connection element along the front end of the toothed connection element. Since the dimensions of the annular housing part in this connection device are largely determined by the dimensions of the connection element, the radial length of the annular body is set, for example, as a toothed connection element so that it can surround the toothed connection element. The thickness of this housing part can be chosen to be as small as possible, preferably less than the difference in axial thickness between the two connecting elements, and thus rotate. A housing part can be used without increasing the overall height of the connecting device, and in a particular example this housing part can be arranged radially inside or outside the toothless connecting device.
[0024]
The purpose of this connection device is to ensure that the toothless connection element is flush with the fixed front end of the housing part or that the toothless connection element is slightly higher than the housing part. is there. In this case, the overall height of the structural group including the rotary connection device preferably corresponds to the distance between the two connection surfaces of the connection element, if possible, except for the drive structure group arranged in the periphery.
[0025]
If, for other reasons, the total height of the rotary connection device is not very important, this annulus can be fastened to the front end of the toothless connection element by bolting or by means of, for example, welding, gluing, pressing, riveting etc. As a result, the overall height is slightly higher.
[0026]
A substantially cylindrical housing part in the form of a casing extends over the whole tooth, adjacent to this annular housing part, in the periphery towards the toothless connection element, to the front end opposite the toothed connection element. The cylindrical housing part in the form of a casing is preferably connected to the annular housing part, for example by welding, and may be manufactured integrally with the annular housing part.
[0027]
For further maintenance of the rotary connection device according to the present invention, the housing component is removed on condition that the housing component according to the present invention is removably fixed to the toothless connection element. be able to.
[0028]
By bolting the housing parts firmly to the toothless connection element, a removable connection device can be realized with little effort. If possible due to the thickness of the housing parts, housing the stepped recess through which the corresponding machine bolt can pass until the head of the machine bolt completely sinks into the radially enlarged area formed in the stepped structure. By providing such a bolt connection in the part, the overall height of the device can be prevented from being increased.
[0029]
In this way, it is possible to screw a fixing bolt designed as a machine bolt into the threaded bore of the toothless connecting element parallel to the axis of rotation. This device is such that when these bolts joining the housing to the toothless connection element are incorporated into the machine, they are covered by the machine frame or fixed parts, thus preventing the housing parts according to the invention from being accidentally detached. Thus, the structure in this connecting device can be realized.
[0030]
The invention allows a variant in which the housing part can be centered on the toothless connection part by means of channels provided in the connection element or the housing part. In this way, while preventing separate adjustment on the one hand, it is completely impossible to cause an undesirable displacement of the housing part relative to the toothless connection element, even if one or more of the fixing bolts become loose.
[0031]
If a centering channel is provided at the edge of the toothless connecting element facing the housing part, an annular housing part can be inserted into this channel. For this purpose, the channel depth is slightly more than the axial thickness difference between the toothless connection element and the toothed element, so that the annulus on the channel floor does not contact the toothed connection element. It must be shallow.
[0032]
In order to be able to fix the housing / annular body against the toothless housing part so as not to move axially, the mechanical bolt is engaged with at least a part of the annular body and the lower surface of the annular body is It must be possible to press firmly against the floor of the channel. This can be achieved by providing one or more subsidence cavities outside the annular housing part.
[0033]
In this case, at least one mechanical bolt is associated with each of the sinking cavities for fixing to the toothless connection element. These sinking cavities are engaged with the lower surface of the bolt head from the rear or are fixed to the bolt head by a main body, for example, a washer. In this way, the housing parts corresponding to the channels of the toothless connection element can be pressed firmly, while at the same time the heads of the mechanical bolts used for fixing can be hidden in the respective subsiding cavities. .
[0034]
This embodiment can be further developed by extending the housing / annular sinking cavity to the casing surface of the housing part facing the toothless connection element, the depth of the toothless connection, and the cross section Can be continued by a subducting cavity in a corresponding manner.
[0035]
A feature of the present invention is that a fixing element engaged by a fixing bolt is inserted into a common recess from the head or rear of the fixing bolt, and covers a joint place between a toothless connecting element and a housing part to be attached thereto. Thus, the concept of forming a recess space common to the annular housing part and the toothless connection element has been developed. With such a structure, the work of bolting the fixing bolt into the toothless connection element can be easily realized, and at the same time the housing parts located mainly on the lateral sides of the toothless connection element can be enclosed and fixed. .
[0036]
The first part of this combined purpose is to provide at least one threaded bore parallel to the axis of rotation for each of the mechanical bolts in the floor of the sinking cavity in the toothless connection element. Achieved by:
[0037]
The housing parts to be fixed are mainly outside the toothless connection element, but with the structure according to the invention, a fixing bore parallel to the axis of rotation of the device is provided, and mechanical manufacture of the fixing bolts, in particular automatic clamping, is carried out. It can be made easier.
[0038]
In order to achieve the combined second part of the object, the present invention makes it possible to provide the body with a bore for passing the fixing bolt. The body can be inserted in each case so as to coincide with the two sinking recesses, corresponding to each of the toothless connection elements and to the housing part to be secured thereto. This body can transmit axial compression forces from the fixing bolts to the annular housing part.
[0039]
If the passage opening for the inserted body has an enlarged part on the top surface for sinking the fixing bolt, the fixing bolt is completely integrated, even though another insertion body is used. And the overall height of the rotary connection device can be kept to a minimum. In order to be able to fully sink the bolt head, the height of the insert body, and thus the depth of the sinking cavity, must be deeper than the height of the bolt head.
[0040]
The annular housing part must be sized so as to extend along or beyond the front end of the toothed connecting element and the teeth arranged on the tooth connecting element.
[0041]
Next, the periphery of the housing part continuously extends as a casing-shaped cylindrical housing part. The casing can be welded to the periphery of the housing part, or can be manufactured by bonding, bolting or other suitable method, or integral with the periphery. This casing-shaped cylindrical housing part thus covers the entire tooth, so that only a narrow gap remains between the toothed connecting element and the casing-shaped cylindrical housing part facing this element.
[0042]
Thus, even in this remaining gap, no dirt or other particles can enter the tooth region, so that the housing part extending over the tooth is at the front end facing the first annular housing part. When sealed against the toothed connection part, the teeth are sealed by the housing so as not to allow dirt to enter. The seal can be secured to either the toothed housing part or the toothed connecting element and can extend along other elements in either case.
[0043]
In order for this sealing element not to impede the rotational movement of the toothed connecting element, the teeth must not extend completely to the front end including the connecting bore, and a length approximately corresponding to the thickness of the sealing material. Only must be terminated and set back against the connection side of the toothed connection element.
[0044]
In order to completely prevent the potential destructive action of invading foreign bodies, a (second) seal located on the side of the guide passage for the roll bearing facing the first housing part can be provided. Thus, the toothed connecting element is sealed on three sides between the guide passage of the toothed connecting element, the two housing parts and the two seals, and during normal operation the area of the roll bearing or the toothed area No dust particles can penetrate any of these, and as a result, the wear of these parts is greatly reduced, thus extending the service life of the rotary connection device according to the present invention.
[0045]
Forming the seal as an elastic seal ring, for example by inserting it into a groove running in the radial direction, or by gluing it, fixing it by the edge in or on the connecting element, in each case on the surface of the other connecting element It has been found advantageous to press.
[0046]
Since the two connecting elements are rotationally symmetric, this seal does not deform at all during the relative rotation, and does not exhibit a fatigue phenomenon because it always remains in the same position. Furthermore, since the compression force of the seal ring is extremely small, little frictional force is generated, and the rotational speed of such a rotary connecting device is generally relatively low, so that the seal ring is in contact with the moving body. Regardless, there is almost no wear phenomenon.
[0047]
Furthermore, the invention makes it possible to enclose a gear element, in particular a pinion, or a worm by an arbitrarily enlarged part in the radial direction of the housing when providing several drive motors that mesh with a toothed connecting element. Is.
[0048]
As a result of the meshing of the toothed connecting element coupled to the rotor of the drive motor and the gear part, the drive motor can be completely enclosed only if the corresponding gear part is likewise sealed.
[0049]
By radially expanding the housing thus produced, the two housing parts are locally deformed compared to the ideal annular shape, i.e. the cylindrical shape of the casing, but this problem is This can be overcome by using manufacturing methods and reasonably extra effort.
[0050]
Finally, in accordance with the gist of the invention, the drive motor can be fixed, in particular bolted, to the toothless connection element or to the housing part connected thereto. The torque transmitted by the drive motor via the pinion or worm is accompanied by a moment that tries to rotate the motor housing in the opposite direction, according to Isaac Newton's law "action and reaction are equal and in opposite directions" Thus, the motor housing must be fastened to a connection element that is not driven, or a mechanical part coupled to this element, in particular to the housing according to the invention. In this connection device, if the motor is fixed with bolts, the motor can be replaced in a short time if necessary when a failure occurs.
[0051]
Other features, details, advantages and advantages of the present invention will become apparent upon reading the following description of a preferred embodiment of the invention with reference to the accompanying drawings.
[0052]
DETAILED DESCRIPTION OF THE INVENTION
The rotary connection device 1 shown in FIGS. 1 and 2 has the advantage that the overall height of the region of the two connection elements 2, 3 arranged coaxially with each other is particularly low. As can be seen from FIG. 2, the two connection elements 2, 3 have an annular shape with a substantially square cross section, and the outer diameter of the inner connection element 2 is slightly smaller than the inner diameter of the outer connection element 3. Thus, in the region of this joint location 4, a single row of ball bearing races 5 makes it possible to easily carry out a relative rotation between the two connecting elements 2 and 3, and at the same time axial and radial forces. And the tilting moment can be absorbed.
[0053]
In the lower surface 8 of the outer connecting element 3 shown in FIG. 2, parallel to the axis of rotation, a plurality of threaded blind holes 6 rotate as crowns for being fastened to the machine parts by bolts. They are arranged so as to be distributed around the axis. The inner connecting element 2 is also arranged in a similar row arranged around the axis of rotation as a crown for accommodating a fixing bolt for a second machine part adapted to rotate relative to the first part. It has a through bore 7.
[0054]
Accordingly, these connection elements 2 and 3 which are firmly bolted to the other respective parts do not come into contact with the other parts while the two machine parts rotate relative to each other. 3 are displaced axially relative to one another, so that the respective connection surfaces 8, 9 are displaced outwards, i.e. in each case upwards or downwards relative to the other connection elements 3,2.
[0055]
In order to drive the outer connecting element 3 with respect to the inner connecting element 2, the drive motor 10 comprising a drive shaft 11 parallel to the rotational axis of the rotary connecting device 1 is radially outward of the two connecting elements 2, 3. The pinion 12 is firmly fixed to the shaft by, for example, a bolt 13.
[0056]
The pinion 12 meshes with the teeth 15 surrounding the outer peripheral portion 14 of the outer connection element 3, and further, on the housing side, the drive motor 10 is coupled to the inner connection element 2, so that the pinion 12 rotates the connection element 3. Let
[0057]
In order to protect the teeth 15 of the outer connection element 3, this tooth is surrounded by a housing 16, which is joined to the connection element 2 without teeth. For this purpose, a first housing part 17 is provided in the frame of the housing 16. The first housing part 17 is circular and has an outer diameter slightly larger than the outer diameter of the outer connecting element 3 having the teeth 15. The thickness of the annular disc 17 is somewhat smaller than the axial thickness difference between the corresponding front end 18 of the toothed connection element 3 and the connection surface 9 of the inner connection element 2.
[0058]
At the outer boundary edge of the connection surface 9 of the toothless connection element 2, a rectangular channel 19 is provided. The axial length of this channel is equal to the thickness of the annular housing part 17, but the radial length is determined by whether the outer diameter measured inside the toothless connection element 2 is equal to the inner diameter of the annular housing part 17. The dimensions are slightly smaller. In this way, it is possible to insert this housing part 17 into the channel 19 for centering, so that the outer surface 20 of the housing part 17 aligns with the connection surface 9 of the toothless connection element 2 when inserted. , Set back in the axial direction.
[0059]
In order to fix this position of the annular housing part 17 relative to the toothless connection element 2, recesses 22 are provided along the circumference of the connection element 2 in the joint gap 21, which are arranged approximately equidistant from each other. Yes. This recessed part is circular, for example. This recess 22 extends almost in the middle of the peripheral area of the connection surface 9 of the toothless connection element 2 and extends into the area adjacent to the front end 20 of the housing part 17 flush with the connection element.
[0060]
Furthermore, a threaded blind hole 23 parallel to the rotation axis is provided in a part of the recess 22 integrated in the connection element 2, and each of these holes has a machine bolt 24. Can be screwed together.
[0061]
However, before the mechanical bolts 24 are inserted, first, metal washers 25 are inserted into the recesses 22. The basic shape of the washer corresponds to the shape of the recess 22 in terms of thickness and area.
[0062]
Each insert 25 is provided with a stepped through-bore 26, and by appropriately rotating the insert 25 within the recess 22, the bore and threaded blind hole bore 23 are aligned, and this recess And threading the machine bolt 24 into the bore 23 of the toothless connection element 2.
[0063]
In this screwing, the bolt 24 head in the region extending in the radial direction above the stepped structure sinks into the insert 25, and the lower surface of the bolt head presses the shoulder of the stepped device, so that the washer-like insertion is performed. Continue until body 25 is fixed. At the same time, this bolt protrudes into the recessed area 22 of the housing part 17 so that it can not only be fastened to the toothless connection element 3 in the axial direction but also rotate azimuthally with respect to the toothless connection element 2. It is concluded so that it cannot.
[0064]
For this purpose, it is important that the depth of the recess 22 is shallower than the thickness of the annular housing part 17 and deeper than the thickness of the head of the mechanical bolt 24.
[0065]
A casing-shaped cylindrical housing part 28 is firmly welded (29) to the front end 27 around the annular housing part 17. The length of the cylindrical housing part 28 in the form of a casing parallel to the rotational axis of the rotary connecting device 1 substantially corresponds to the height of the toothed region and the thickness of the annular housing part 17.
[0066]
The remaining gap 30 between the casing-shaped cylindrical housing part 28 and the outer periphery 14 of the toothed connection element 3 is closed by a seal ring 31. This seal ring is fixed, for example, to the outer casing surface 14 of the toothed connection element 3 below the toothed region 15 and extends radially outwardly below the casing-like cylindrical housing part 17. The housing part 28 is compressed by the elasticity of Similarly, a seal ring 33 that covers the joint gap 4 below the ball bearing race 5 and is pressed against the lower front end 34 of the toothless connection element 2 may be provided on the inner peripheral portion 32 of the toothed connection element 3. it can.
[0067]
The housing 16 may expand (35) in the radial direction in the region of the motor 10, and this expanded portion is the radial expansion of the expansion part 38 of the cylindrical housing part 28 in the form of a casing and the annular housing part 17. If necessary, the front end opposite to the motor 10 may be sealed by a plate 38 formed by the part 37 and having an area approximately corresponding to the area of the continuous part 37.
[0068]
This enlarged portion of the housings 35-38 surrounds the drive pinion 12 and at the same time forms a stable connection surface 37 for the bolt 39 of the motor housing 40. Another metal plate 41 can be provided between the fixing surface 37 and the motor housing 40 for reinforcement purposes or to facilitate fixing.
[0069]
Several drive motors 10 can also be coupled to the rotary connection device 1. It is preferable that several housing enlarged portions 35 are arranged on the outer peripheral portion of the apparatus and displaced by the same rotation angle. When the housing enlarged portion 35 is not used, the opening for inserting the pinion 12 can be closed by a cover with the bolt 39.
[0070]
As can be seen from FIG. 3, the first embodiment 51 of the rotary connecting device according to the present invention is mounted in particular so that the drive motor 60 is not parallel to the rotational axis. On the other hand, the outside is different from the first embodiment in that it is attached in the tangential direction.
[0071]
In FIG. 4, a worm 62 is arranged on the drive shaft 61 of the drive motor 60 in place of the pinion, and this worm is connected to the teeth 65 arranged on the outer peripheral portion 64 of the connecting element 53 located radially outside. Meshed.
[0072]
As can further be seen from FIG. 4, the basic structure of the rotary connecting device 51 is quite similar to the rotary connecting device 1 of FIGS. The two connecting elements 52 and 53 are arranged coaxially with each other, and in each case one element is slightly in the direction of their connecting surface 58, 59 with respect to the other element 52, 53. It is displaced outward. In the embodiment 51, a single row ball bearing race 55 is also provided at the joining site 54.
[0073]
In order to secure the rotating plant or machine part, a threaded blind hole 56 parallel to the axis of rotation is provided in the connection surface 58 of the toothed connection element 53, one of which is a continuous bore and the inner connection element 52. Corresponding connection bores 57 are formed in the connection surface 59. Accordingly, in this embodiment, a fixed bore 56 of the toothed connecting element 53 is also provided between the tooth 65 and the ball bearing race 55 so as to minimize the structure.
[0074]
Furthermore, in this embodiment, a housing 66 comprising two parts 67 and 68 is also provided. The annular housing part 67 has an extension with a radial width that is slightly larger than the difference between the outer diameter of the teeth 65 and the inner diameter of the toothless connection element 52.
[0075]
A stepped structure is provided on the lower surface of the annular housing part 67 at a predetermined distance from the rotation axis corresponding to the outer periphery of the toothless connection element 52 so as to form the channel 70 when viewed from the center of the annular body 67. .
[0076]
The channel can be engaged with the outer edge of the connection surface 59 of the toothless connection element 52 centered. In order to completely secure the annular housing part 67 to the toothless connection element 52, a threaded bore 71 is arranged between the through-bore 57 of the connection element 52 and, when rotated appropriately, the annular housing Corresponding bores 72 in part 67 can be aligned with threaded bores 71.
[0077]
The bore 72 of this housing part 67 has no internal thread and instead has an enlarged cross section in the region of the outer side 73 of this housing part 67 that can accommodate the head of the fixing bolt 74. .
[0078]
Inside the housing part 67 extends to the outside 73 of the housing part as well as the through-bore 57 of the toothless connection element 52 as well as a lubricant channel 75 arranged inside this bore for the ball bearing race 55. .
[0079]
When fixing a plant or machine part to the toothless connection element 52, friction connecting means by means of bolts which penetrate the through bore 57 and engage behind it directly act on the part. Therefore, the intervening housing rings 67 and 79 do not have independent support functions in the direction of transmitting the axial direction and the tilting moment, but instead merely assist the torque of the drive motor 50.
[0080]
A cylindrical housing part 68 having a casing shape is welded (77) to the outer peripheral portion 76 of the annular housing part 67. The casing-shaped cylindrical housing part 68 has an outer diameter that matches the outer diameter of the annular housing part 67 and can be centered on a channel 78 whose outer side (76) is integrated with the lower surface. .
[0081]
The inner diameter of the casing-like cylindrical housing part 68 extends beyond the tooth region 65 that surrounds, is spaced from, and terminates at the connection surface 58 of the connection element 53.
[0082]
In order to be able to seal the lower part of the tooth 65 in this embodiment 51 despite the set-back wide tooth 65, the connection surface 58 of the toothed connection element 53 has a metal ring 79 of the same diameter. Is firmly bolted.
[0083]
For this purpose, a bore 81 is provided in the metal ring 79 which coincides with the threaded blind hole of the toothed connection element 53, which bore accommodates the head of the mechanical bolt 80. The lower part is enlarged. The channel 82 arranged in the region of the inner periphery of the metal ring 79 makes it possible to center the metal ring 79 at the inner edge of the connection surface 58 of the toothed connection element 53.
[0084]
An outer peripheral portion of a metal ring 79 is provided in the region of the tooth 65 having a chamfered surface 83 that travels substantially tangentially to the periphery of the worm 62 so as to prevent contact with the worm 62. It has become. The seal ring 85 inserted in the groove 84 running in the circumferential direction is arranged below the chamfered region 53, and the outer periphery of the seal ring is inside the cylindrical housing part 68 having a casing shape. To seal.
[0085]
Another seal 86 is provided between the two connecting elements 52 and 53 on both sides of the joining site 54 that houses the ball bearing race 55.
[0086]
The housing part 68 is cut in the area of the worm 62, and the gap created by the engagement between the worm 62 and the tooth crown 65 is closed by a substantially cylindrical housing part 87 surrounding the worm 62. This housing part 87 is only semi-cylindrical in the central area of the mesh, but on the peripheral edges 88, 89 to which the worm 62 is attached or to which the drive motor 60 is attached by a flange. Thus, the cross section of the housing part 87 corresponds to a substantially perfect circle.
[0087]
Lubricant 88 can be provided in the housing part 87, particularly in a region opposite the mating portion. In order to increase the drive torque, several, in particular two drive motors 60 and worms 62 as well as housing parts 87 surrounding them may be provided.
[Brief description of the drawings]
FIG. 1 is a perspective view of a first embodiment of the present invention.
FIG. 2 is a sectional view taken along line II-II in FIG.
FIG. 3 is a plan view of a second embodiment of the present invention.
4 is a cross-sectional view taken along line III-III in FIG.
[Explanation of symbols]
1 Rotary connection device
A few connection elements
4 Joining site
5 Ball bearing race
6 blind hole
7 Through bore
8,9 Connection surface
12 Pinion
13 volts
14 outer periphery
15 teeth
17 Housing parts
18 Front end
19 channels
20 outside
21 Junction gap
22 recess
23 bore
24 volts
25 Insert body
26 volts
27 Front end
28 Housing parts
29 Welded part
30 gap
31 Seal ring
32 Inner circumference
33 Seal ring
34 Front end
35 Enlarged part
36 Enlarged part
37 continuous parts
38 plates
39 Bolt on
40 Motor housing
51 Rotary connection device
52 Connection elements
53 Connection elements
54 connected sites
55 Ball bearing race
56 Fixed bore
58 Connection surface
59 Connection surface
60 drive motor
62 Warm
64 outer periphery
65 teeth
66 housing
67 Housing parts
70 channels
72 bore
73 outside
75 Lubrication channel
76 Outer periphery
78 channels
79 Metal ring
80 volts
82 channels
84 groove
85 Seal ring
87 Housing parts
88, 89 peripheral edge

Claims (10)

A single row or multiple rows between the first connecting element ( 2; 52 ) and the second connecting element ( 3; 53 ) to accommodate axial and radial loads and tilting moments. A rotary bearing (5; 55) formed as a roll bearing;
A drive (10; 60) coupled to or adapted to be coupled to the two connecting elements (2, 3; 52, 53) and causing a relative rotational movement of the two connecting elements; With
The drive frame is fixed to a first connecting element (2; 52), the drive rotor is connected to a pinion (12) or a worm (62), which pinion or worm is connected to the first connection element (2; 52). The second connecting element (3; 53) meshes with the teeth (15; 65) provided on the peripheral surface of the second connecting element (3; 52) and fixes the second connecting element (3; 53) to the first machine part . in the front end face of the; (53 3), said teeth connecting element (15; 65) and the rotary bearing (5; 55) between, arranged at predetermined intervals in the circumferential direction a plurality of fastening means (6 ; 56) are provided, two coaxial connection elements (2,3; in 51); apparatus for rotatably coupling the 52 and 53) (1
This device, the first connecting element a; (66 16), said second connecting element fixed housing (2 52); said fastening means in (3 53) (6; 56) in the provided side opposite the rear end face (18) side, the second connecting element; covers the (3 53), said second connection element; tooth (3 53) (15; 65) comprising a; (66 16), the first connection element housing enclosing a; the (2 52), the first connection element (2; 52) of another for securing to the second machine part Even if a part of the housing ( 16; 66 ) is present between the second mechanical part and the first connecting element (2; 52), the fixing means (7; 57) are arranged. The second mechanical part and the first connecting element (2; 52) are directly frictionally connected via another fixing means (7; 57). A device characterized by. By machining or molding; (53 3), the second connection element and the second connecting element; tooth (3 53) (15; 65), and said rotary bearing; for (5 55) 2. A device according to claim 1, wherein a ball bearing race is formed. One or both of the connecting elements (2, 3; 52, 53) have a concentric ring or washer shape, and the two fixing means are a plurality of circumferentially arranged at predetermined intervals. Device according to claim 1 or 2, characterized in that it is a bore (6, 7; 56, 57). 4. The device according to claim 1, wherein the second connecting element (3; 53) is formed as an internal gear or an external gear . The said ball-bearing race is provided in the surrounding surface on the opposite side to the surrounding surface in which the said tooth | gear ( 15; 65 ) is provided in the said 2nd connection element ( 3; 53 ), 4. The apparatus according to 4. The circumferentially arranged bores ( 6; 56 ) are arranged in the radial direction from the bottom of the ball bearing race in the second connecting element ( 3; 53 ) and the root circle of the teeth ( 15; 65 ) . 6. The apparatus of claim 5, wherein the apparatus is generally equidistant . 7. A device according to claim 1, wherein the bore (6; 56) in the second connecting element (3; 53) is provided with a female thread. Said second connecting element (3; 53) in the bore (6; 56), a second connection element; a blind hole which is open only on the front surface side of (3 53), the depth of the bore The device according to any of the preceding claims, characterized in that is between 1/2 and 3/4 of the height of the second connecting element (3; 53). The bottom of the bore ( 6; 56 ) is positioned at the bottom height of the ball bearing race having a substantially semicircular cross section in the axial direction of the second connecting element ( 3; 53 ). A device according to any of the preceding claims. A part of the housing ( 16; 66 ) is formed along the rear end face ( 18 ) of the second connecting element (3; 53 ) and generally parallel to the rear end face ( 18 ). The device according to claim 1, wherein the device extends as.

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