JP2003120792A - Device for rotatable coupling of two coaxial connecting elements - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve reliability of a device for rotatably coupling two coaxial connection elements to each other. SOLUTION: This device for rotatable coupling of two coaxial connecting elements is provided with a rotating bearing provided between the connecting elements to match axial and diametric loads and an inclination moment, and a drive coupled with both connecting elements to generate relative movement between the connecting elements. A frame of the drive is fixed to the first connection element. A rotor of the drive is engaged with casing side teeth of the second connecting element through a pinion or worm. One or more housing parts are additionally provided to enclose the teeth of the second connecting element for preventing invasion of dust.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a rotary bearing formed as a single-row or multi-row roll bearing with a connecting element to accommodate axial and radial loads and tilt moments. A drive coupled to or capable of being coupled to both connection elements so as to produce a relative rotational movement of said connection element, the frame of said drive being fixed to the first connection element while the drive is A rotor of the toothed connecting element is connected to a pinion or worm, which pinion or worm meshes with teeth on the casing side of the second connecting element and secures the connecting element to the first machine part. Within the part there is provided a fixing means of the type of crown, which fixing means is arranged between the tooth and the rolling bearing, and is provided with two coaxial contacts. A device for rotationally coupling a connecting element.

[0002]

2. Description of the Related Art Such rotary connecting devices are commercially available as so-called ball bearing slewing rims, and these are
Different diameters and overall heights (installation heights) are available, so that the correct rotary connection can be selected for each particular application.

Preferred applications include building and construction machinery, such as excavators and diggers, as well as cranes, leaf flange bearings used in large wind farms, and tower structural bearings, conveyors, lifting, and Loading / Unloading Equipment, Lifting Platforms, Scaffolding and Vehicle Cranes, Heavy Duty Carriers, Ship Cranes, Machine Tool Turntables, eg Rotating Carousels Used in Bottling Factories, Medical Equipment, Tail Rotating Collars for Timber Harvesters , Equipment for vehicles in amusement parks and the like.

In many of these applications, it is important that the overall height of the rotating device is as low as possible. The reason is,
The overall height of the ball bearing slewing ring is almost never higher than the gear height of the connecting parts of the rotary connecting device actually driven by the motor, and the ball bearing slewing ring is generally protected from debris and contaminants by rubber seals, Therefore, although it is protected from excessive wear and tear, no adequate protective measures are taken for the teeth, and therefore foreign matter may enter the teeth during operation under severe conditions, such as at a construction site. However, these foreign substances may then enter the gap between the tooth and the gear element, for example, the pinion or worm meshing with the tooth, and may cause the tooth profile to be worn or damaged.

The risk of tooth profile breakage arises especially when hard materials such as stones and rocks are intruded or at hard metal bends formed in machine tools. Considering the infiltration of dust particles into the tooth area, the lubricating grease is also immediately contaminated, so that the lubricating grease must be replaced in a short time. Finally, unprotected teeth can be a potential source of injury for maintenance staff, for example.

[0006]

SUMMARY OF THE INVENTION Therefore, the present invention solves the above-mentioned drawbacks of the prior art, prevents damage to the tooth area due to the invasion of foreign matter as much as possible, and injects the lubricating oil into the tooth area. To provide as long as possible and to minimize the risk of injury as a whole.

[0007]

The object is to have a housing part surrounding at least the teeth of the second connecting element, which housing part is connected to a toothless connecting element, which housing part is connected / connected. For fastening the toothless connecting element to the second bearing part, which surrounds the toothed connecting element at the front end opposite the fixing means, so that the majority of the housing parts according to the invention are not subjected to forces. The fixing means can be solved by a device which is arranged directly on the toothless connecting element.

The invention is based on the fact that two connecting elements arranged coaxially to one another are usually displaced axially slightly from each other, each connecting bore preferably axially spaced from the other connecting element. It utilizes the fact that it is arranged at the front end of one displaced connecting element.

On the other hand, the housing of the drive motor is connected to a toothless connecting element, which is therefore generally fixed to the corresponding machine frame or
Being stationary or fixed to a larger machine part, the present invention secures the tooth-protecting housing to the toothless connection part, even though it is considerably closer to the toothless connection part. Therefore, the geometry is advantageously used in such a way that it encloses the entire rotating part on two sides, preferably three sides, of the cross section, so as to eliminate external influences as much as possible.

The toothed connecting element, or its end, provided in the bore for connecting the rotating parts, which is externally accessible, is likewise covered by the installed housing.

The housing according to the invention protects the toothed area from the ingress of dust particles,
Prolongs service life and at the same time protects the lubricating grease from impurities, thus increasing the time until the next replacement of the lubricant and finally avoiding maintenance or repair staff from unintentionally touching the equipment parts, The staff can be protected.

Since all of these are achieved within the framework of an optimally set up structural device, the user does not have to install separate housing parts, while at the same time significantly constructing a relatively large unit. It is simplified. Since the fixing element of the toothless connection piece is arranged directly on this toothless connection piece, the housing can be designed 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 lighter on the other hand.

Preferably, in addition to machining to remove metal, the connecting element / base member itself is subjected to joint forming operations, for example sintering, to produce the teeth for the roll bearings of the second connecting element and the guide passages. Have been found to be preferable.

Thus, on the one hand, the entire toothed connecting element can be manufactured in one piece, which simplifies the manufacturing process and, on the other hand, improves the stability of the toothed connecting element and thus enables transmission. Not only axial and radial forces, but also tilt and drive moments can be increased.

Furthermore, it is also possible to manufacture the fixing bore of the second connecting element from the connecting element / base part by machining to remove metal. Furthermore, it is of course also possible to arrange the teeth on the separately manufactured structural parts and then to connect the structural parts to the corresponding connecting elements by a second process step, for example pressing or bolting.

Within the scope of the invention, it is possible to form one or both of the connecting elements as fixing elements, in particular concentric rings or disks with bores, arranged like a crown or a collar. Since large forces and moments have to be transmitted, a large number of roll bearing elements are required which require rolling bearings of corresponding diameters. Therefore, 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 penetrate.

The fixed bore can be formed as a continuous recess with or without internal threads, or as a blind hole with internal threads. If the front end of the toothed connecting element is surrounded by the housing part according to the invention, it is not possible to access the front end facing the connecting surface, so according to the invention it is advisable to use a bore with an internal thread. To do.

This feature of the invention can be further developed by configuring the toothed connecting element as a crown provided with internal or external threads. In the embodiment with the teeth of the connecting element on the casing side, the maximum driving moment can always be transmitted, regardless of the setting of the angle of rotation of the toothed connecting element, so that the total height can be reduced to a minimum value if necessary.

The total height can be further reduced if the rolling bodies / guide passages of the toothed connecting element are arranged on the housing surface facing the teeth. In this case, for the roll bearing most of the total height of this connecting element, which is determined by the height of the toothed area, is available.

The radial lengths of the fixed bores of the toothed connecting element with respect to the base of the rolling body / guide passage of the toothed connecting element correspond approximately with the radial lengths of these bores from the tooth base. The toothed connecting element can be prevented from being locally weakened.

Another structural feature serves the same purpose.
That is, the fixed bore of the toothed connecting element is exclusively a blind hole which opens at the connecting / front end and has an axial parallel depth between 1/2 and 3/4 of the total height of the toothed connecting element. Serves the purpose of constructing.

With such a feature, further development is possible.
That is, as a result of the built-in guide passage for the roll bearing, it is possible to position the floor of the fixed bore of the toothed connecting element at approximately the height of the largest projection or taper of the toothed connecting element. In this way, the guide passages of the roll bearing maintain a maximum distance from the fixed bore, so that the toothed connection of the toothed connection element is not at risk of being deformed by the action of large radial forces. The radial extension length and thus its weight can be reduced to a minimum.

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. is there. The dimensions of the annular housing part in this connecting device are largely determined by the dimensions of the connecting element, so that it is possible to enclose the toothed connecting element,
The radial length of this annulus can be chosen, for example, to be only slightly larger than the corresponding dimensions of the toothed connecting element, and the thickness of this housing part should be as small as possible, preferably two. The housing part can be used without exceeding the axial thickness difference between the connecting elements and thus without increasing the overall height of the rotary connecting device, which in a particular case is the radial inner side of the toothless connecting device or Can be placed outside.

The purpose of this connecting device is to ensure that the toothless connecting element is flush with the fixed front end of the housing part or that the toothless connecting element is slightly higher than the housing part. It is to be. In this case, the total height of the structural group containing the rotary connecting device preferably corresponds to the distance between the two connecting surfaces of the connecting element, if possible, except for the peripherally arranged drive structural groups.

For other reasons, if the overall height of the rotary connecting device is not very important, this annulus is suitable for bolting to the front end of the toothless connecting element or for example by welding, gluing, pressing, riveting, etc. It may be fastened, which results in a slightly higher overall height.

A casing-like, substantially cylindrical housing part extends over the entire tooth, adjacent the annular housing part, on the periphery facing the toothless connecting element, to the opposite front end of the toothed connecting element. This cylindrical housing part in the form of a casing is preferably connected to the annular housing part, for example by welding, and may also be manufactured in one piece with the annular housing part.

For the maintenance of the rotary connection device according to the present invention, provided that the housing component according to the present invention is releasably fixed to the toothless connection element, the housing is further enabled by the present invention. Parts can be removed.

By firmly bolting the housing parts to the toothless connecting element, a removable connecting device can be realized with little effort. If the thickness of the housing components allows it, the housing has step recesses that allow corresponding machine bolts to pass until the head of the machine bolt is fully submerged in the radially enlarged area formed in the step structure. Provided in the component, such bolt connections allow the overall height of the device not to be too high.

In this way, it is possible to screw fixing bolts designed as machine bolts into the threaded bores of the toothless connection element parallel to the axis of rotation. The device is such that these bolts, which join the housing to the toothless connecting element, are covered by the frame or fixed parts of the machine when installed in the machine, thus preventing accidental disengagement of the housing parts according to the invention. Thus, the structure in this connecting device can be realized.

The invention enables variants 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, it is completely impossible to prevent a separate adjustment on the one hand and also to cause an undesired displacement of the housing part with respect to the toothless connecting element, even if one or more of the fixing bolts becomes loose.

If a channel for centering is provided at the edge of the toothless connecting element facing the housing part, an annular housing part can be inserted in this channel. For this purpose, the depth of the channel is slightly smaller than the difference in axial thickness between the toothless connecting element and the toothed element, so that the annulus resting on the floor of the channel does not contact the toothed connecting element. Must be shallow.

In order to be able to fix the housing / annular body against axial movement also with respect to the toothless housing part, mechanical bolts are engaged with at least a part of the annular body, The underside of the channel must be able to press firmly against the floor of the channel. This can be accomplished by providing one or more recessed cavities on the outside of the annular housing part.

In this case, at least one mechanical bolt is associated with each recessed cavity for fixing to the toothless connecting element. These recessed cavities engage the underside of the bolthead from the rear or are fixed to the bolthead by the body, eg a washer. In this way, the housing parts corresponding to the channels of the toothless connecting element can be pressed firmly, while at the same time the head of the mechanical bolt used for fixing can be hidden in the respective recessed cavity. .

This embodiment can be further developed by extending the recessed cavity of the housing / annular body to the casing surface of the housing part facing the toothless connection element, the depth of the toothless connection, And with respect to the cross section, it can be correspondingly continued by a subduction cavity.

A feature of the invention is that, from the head of the fixing bolt, or from the rear, the fixing element engaged by the fixing bolt is inserted into the common recess, and the joint between the toothless connecting element and the housing part to be attached thereto is joined. The idea is to develop an annular housing part and a recessed space that is common to the toothless connection element so as to cover the location.
With such a structure, the operation of bolting the fixing bolt into the toothless connecting element can be easily realized, and at the same time, the housing parts located mainly outside of the toothless connecting element can be enclosed and fixed. .

The first part of this combined purpose is, in the floor of the recessed cavity in the toothless connection element, for each of the machine bolts, at least one threaded bore parallel to the axis of rotation. It is achieved by providing.

The housing part to be fixed is mainly outside the toothless connecting element, but with the structure according to the invention,
A fixing bore parallel to the axis of rotation of the device can be provided to further facilitate the mechanical manufacture of the fixing bolt, especially the automatic tightening.

To achieve the second part of the combined purpose, the invention makes it possible to provide the body with a bore for the passage of the fixing bolt. The body can be inserted in each case so as to coincide with two recessed recesses, corresponding to each toothless connecting element and to the housing part to be fixed thereto. The body is capable of transmitting an axial compression force from the fixing bolt to the annular housing part.

If the passage opening for the inserted body has an enlarged portion on the top surface for the fixing bolt to be recessed, despite the use of another insertion body
The fixing bolts can be fully integrated and the overall height of the rotary connecting device can be kept to a minimum. In order to allow the bolt head to be fully submerged, the height of the insert body,
Therefore, the depth of the submerged cavity must be deeper than the height of the bolt head.

The annular housing part must be sized so as to extend along or beyond the front end of the toothed connecting element and the tooth located above the connecting element of this tooth.

The periphery of this housing part then extends continuously as a cylindrical housing part in the form of a casing. The casing can be welded to the periphery of the housing part, or fixed by gluing, bolting or any other suitable method, or manufactured to be integral with the periphery. This casing-like cylindrical housing part therefore covers the entire tooth, so that only a narrow gap remains between the toothed connecting element and the casing-like cylindrical housing part facing this element.

Therefore, also in this remaining gap,
No dirt or other particles can penetrate into the area of the tooth, so that the housing part extending over the tooth seals against the toothed connecting part at the front end facing the first annular housing part. If so, the teeth are sealed by the housing to keep out debris. This seal can be fixed either on the housing part covering the teeth or on the toothed connecting element and in any case extend along the other element.

In order that this sealing element does not hinder the rotational movement of the toothed connecting element, up to the front end including the connecting bore,
The teeth must not be fully extended and must be terminated and set back to the connecting side of the toothed connecting element by a length which corresponds approximately to the thickness of the sealing material.

In order to completely prevent the potential destructive effect of invading foreign matter, it is located on the side of the guide passage for the roll bearing facing the first housing part (second
A seal can be provided. The toothed connecting element is thus sealed on the three sides between the guide passage of the toothed connecting element, the two housing parts and the two seals, and during normal operation in the area of the roll bearing or the toothed area. No dust particles can enter any of the parts, resulting in a significant reduction in wear on these parts,
Therefore, the service life of the rotary connecting device according to the present invention can be extended.

Forming a seal as an elastic seal ring,
It has proved to be advantageous to secure by the edges in or on the connecting element, for example by inserting or gluing it in a groove running radially, and in each case pressing against the face of the other connecting element. There is.

Since the two connecting elements are rotationally symmetric, this seal does not deform at all during relative rotation and, at the same time, stays in the same position at all times. Not present. Furthermore, since the compression force of the seal ring is extremely small, almost no frictional force is generated,
In addition, since the rotation speed of such a rotary connection device is generally relatively low, the seal ring hardly exhibits a wear phenomenon despite being in contact with the moving body.

The invention further provides that, when several drive motors are provided which mesh with the toothed connecting element, the gear element, in particular the pinion or the worm, can be surrounded by a radially enlarged part of the housing. To do so.

As a result of the meshing of the toothed connection element connected to the rotor of the drive motor with the gear part, the drive motor can be completely enclosed only if the corresponding gear part is likewise sealed.

By radially expanding the housing thus produced, the two housing parts are locally deformed compared to the ideal annular shape, ie the cylindrical shape of the casing, but this problem , Can be overcome by using the latest manufacturing methods and making appropriate extra efforts.

Finally, in accordance with the spirit of the invention, the drive motor can be fixed, in particular bolted, to the toothless connecting element or the housing part connected to it. The torque transmitted by the drive motor through the pinion or worm is accompanied by a moment that attempts to rotate the motor housing in the opposite direction due to Isaac Newton's law "action and reaction are equal and opposite" Therefore, the motor housing must be fastened to a non-actuated connecting element or a mechanical part connected to this element, in particular to the housing according to the invention. In this connection device, if the motor is fixed by bolts, the motor can be replaced in a short time if necessary when a failure occurs.

Other features, details, advantages and advantages of the present invention will become apparent on reading the following description of the preferred embodiment of the invention with reference to the accompanying drawings.

[0052]

The rotary connecting device 1 shown in FIGS. 1 and 2 has the advantage that the total height of the regions of the two connecting elements 2, 3 arranged coaxially to one another is particularly low. As can be seen from FIG. 2, the two connecting elements 2, 3 have an annular shape with a substantially quadrangular cross section, and the inner connecting element 2
The outer diameter of is slightly smaller than the inner diameter of the outer connecting element 3, so that in the region of this joining location 4 a single row of ball bearing races 5 provides a relative rotation between the two connecting elements 2 and 3. It can be performed easily, and at the same time, can absorb axial and radial forces and tilt moments.

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 are provided for being bolted to the machine part. Are arranged so as to be dispersed around the rotation axis. The inner connecting element 2 is also a row of similar rows arranged around the axis of rotation as a crown for accommodating a fixing bolt for a second mechanical part adapted to rotate with respect to the first part. It has a through bore 7.

Therefore, these connecting elements 2, 3 which are firmly bolted to the other respective parts do not come into contact with the other parts during the relative rotation of the two mechanical parts,
Since both connecting elements 2, 3 are displaced axially relative to one another, the respective connecting surface 8, 9 is displaced outwards, i.e. in each case upwards or downwards relative to the other connecting elements 3, 2.

For the inner connecting element 2, the outer connecting element 3
Drive motor 10 including a drive shaft 11 parallel to the rotation axis of the rotary connection device 1 for rotationally driving
Are arranged radially outside of the two connecting elements 2, 3 and on this shaft a pinion 12 is provided, for example a bolt 13
It is firmly fixed by.

The pinion 12 meshes with the teeth 15 surrounding the outer peripheral portion 14 of the outer connecting element 3, and further on the housing side, the drive motor 10 is connected to the inner connecting element 2, so that the pinion 12 is connected to the connecting element. Rotate 3.

In order to protect the tooth 15 of the outer connecting element 3, this tooth is surrounded by a housing 16,
The housing 16 is joined to the toothless connecting element 2. For this purpose, a first housing part 17 is provided in the frame of the housing 16. This first housing part 17 is circular and has an outer diameter slightly larger than the outer diameter of the outer connecting element 3 with the teeth 15. The thickness of this annular disc 17 is somewhat smaller than the axial thickness difference between the corresponding front end 18 of the toothed connecting element 3 and the connecting surface 9 of the inner connecting element 2.

A rectangular channel 19 is provided at the outer boundary edge of the connecting surface 9 of the toothless connecting element 2.
The axial length of this channel is equal to the thickness of the annular housing part 17, but its radial length is such that the outer diameter measured inside the toothless connecting element 2 is the annular housing part 1.
The size is equal to or slightly smaller than the inner diameter of 7. In this way, it is possible to insert this housing part 17 into the channel 19 for centering, and once inserted, the outer surface 2 of the housing part 17 is inserted.
The 0 is aligned with the connecting surface 9 of the toothless connecting element 2 or set back axially.

In order to fix this position of the annular housing part 17 with respect to the toothless connecting element 2, there are recesses 22 arranged approximately equidistant from one another in the joint gap 21 along the circumference of the connecting element 2. It is provided. This recess is, for example, circular. This recess 22 extends approximately halfway in the peripheral region of the connecting surface 9 of the toothless connecting element 2 and into the adjacent region of the front end 20 of the housing part 17 flush with the connecting element.

Furthermore, the recess 2 integrated in the connecting element 2
A threaded blind hole 23 parallel to the axis of rotation is provided in a part of 2 and a machine bolt 24 can be screwed into each of these holes.

However, before inserting the mechanical bolts 24, first, the metal washers 25 are inserted into the recesses 22. The basic shape of this washer corresponds to the shape of the recess 22 in terms of thickness and area.

Each insert 25 is provided with a stepped through bore 26, by appropriately rotating the insert 25 within the recess 22, the blind bore 23 threaded with the bore.
Through the recess and align the bolts for the machine 2
4 is screwed into the bore 23 of the toothless connecting element 2.

This screwing causes the bolt 24 head in the radially expanded region above the stepped structure to sink into the insert 25, the underside of the bolt head pressing the shoulder of the stepped device and thus the washer. Continue until the insert 25 is fixed. At the same time, this bolt
Since it projects into the recessed area 22 of the toothless connecting element 3, it is not only irremovably axially fastened to the toothless connecting element 3 but also non-rotatably fastened to the toothless connecting element 2.

For this purpose, the depth of the recess 22 is
It is important that it is shallower than the thickness of the annular housing part 17 and deeper than the thickness of the head of the mechanical bolt 24.

Front end 2 around annular housing part 17
7, a cylindrical housing part 2 having a casing shape
8 is firmly welded (29). The length of the cylindrical housing part 28 in the shape of a casing parallel to the axis of rotation of the rotary connection device 1 corresponds approximately to the height of the toothed region and the thickness of the annular housing part 17.

The remaining gap 30 between the casing-shaped cylindrical housing part 28 and the outer circumference 14 of the toothed connecting element 3 is closed by a sealing ring 31. This sealing ring is secured, for example, to the outer casing surface 14 of the toothed connecting element 3 below the toothed region 15 and extends radially outwardly below the casing-shaped cylindrical housing part 17 and is unique to the sealing ring 31. The resilience of the element causes it to be compressed against this housing part 28. Similarly, a sealing ring 33, which covers the lower joint gap 4 of the ball bearing race 5 and is pressed against the lower front end 34 of the toothless connecting element 2, is provided on the inner circumference 32 of the toothed connecting element 3. it can.

The housing 16 may be radially expanded (35) in the region of the motor 10, this expanded portion being a casing-like cylindrical housing part 28.
Plate 38 having an area substantially corresponding to the area of the continuous part 37, if desired, formed by the inflated part 38 and the radial continuous part 37 of the annular housing part 17.
May seal the front end opposite the motor 10.

This enlarged portion of the housings 35-38 surrounds the drive pinion 12 and at the same time the motor housing 40.
Forming a stable connection surface 37 for the bolt 39 of the. A separate metal plate 41 may be provided between the fixing surface 37 and the motor housing 40 for reinforcement purposes or to facilitate fixing.

Several drive motors 10 can also be connected to the rotary connection device 1. It is preferable to dispose several housing enlarging portions 35 on the outer peripheral portion of the present apparatus and displace them by the same rotation angle. When the housing expansion portion 35 is not used, the opening for inserting the pinion 12 can be closed by the cover with the bolt 39.

As can be seen from FIG. 3, the first embodiment 51 of the rotary connecting device according to the present invention is particularly suitable for the drive motor 60.
Is different from the first embodiment in that it is mounted non-parallel to the axis of rotation and, instead, is mounted tangentially to the outer connecting element 53.

In FIG. 4, the drive shaft 61 of the drive motor 60 has a worm 6 instead of a pinion.
2 are arranged, and the worm meshes with the teeth 65 arranged on the outer peripheral portion 64 of the connecting element 53 located radially outside.

As can be seen further from FIG. 4, the rotary connecting device 5
The basic structure of 1 is quite similar to the rotary connecting device 1 of FIGS. The two connecting elements 52 and 53 are arranged coaxially to each other, and in each case one element is slightly in the direction of their connecting surfaces 58, 59 relative to the other element 52, 53. It has been displaced outward. In this Example 51, the joining site 54 is also provided with a single row of ball bearing races 55.

A threaded blind hole 56 parallel to the axis of rotation is provided in the connecting surface 58 of the toothed connecting element 53 for fixing a rotating plant or machine part,
Connecting surface 59 of inner connecting element 52 with one as a continuous bore
A corresponding connection bore 57 is formed therein. Therefore,
In this embodiment, teeth 6 are used to minimize the structure.
A fixed bore 56 of the toothed connecting element 53 is also provided between the 5 and the ball bearing race 55.

Furthermore, in this embodiment, two parts 67,
A housing 66 consisting of 68 is also provided. The annular housing part 67 comprises an outer diameter of the tooth 65 and a toothless connecting element 5
2 has an extension of a radial width that is slightly larger than the difference from the inner diameter of 2.

The channel 70 as viewed from the center of the annular body 67.
A stepped structure is provided on the lower surface of the annular housing part 67 at a predetermined distance from the axis of rotation corresponding to the outer circumference of the toothless connection element 52.

This channel can be engaged with the outer edge of the connecting surface 59 of the toothless connecting element 52 centered. In order to secure the annular housing part 67 completely to the toothless connecting element 52, a threaded bore 71 is arranged between the through bores 57 of the connecting element 52, by suitable rotation, the annular housing. Part 6
A corresponding bore 72 in 7 can be aligned with the threaded bore 71.

The bore 72 of this housing part 67 does not have an internal thread, but instead can accommodate the head of a fixing bolt 74, the outside 7 of this housing part 67.
It has an enlarged cross section in the region of 3.

Inside the housing part 67, up to the outer side 73 of this housing part, not only the through bore 57 of the toothless connecting element 52, but also the ball bearing race 55.
Lubricant channel 7 located inside this bore for
5 is also extended.

When fixing a plant or machine part to the toothless connecting element 52, a frictional connecting means by means of a bolt which penetrates the through bore 57 and engages behind it acts directly on the part. Therefore, the intervening housing rings 67, 79 do not have independent support functions in the axial direction and in the direction of transmitting the tilting moment; instead,
It only assists the torque of the drive motor 50.

On the outer peripheral portion 76 of the annular housing component 67, a casing-shaped cylindrical housing component 68 is welded (77). This casing-shaped cylindrical housing part 68 has an outer diameter of the annular housing part 6
The outer diameter (76) of which is the same as the outer diameter of No. 7 so that the outer side (76) can be centered on the channel 78 integrated with the lower surface.

The inner diameter of the casing-like cylindrical housing part 68 surrounds the tooth 65 and is spaced from this tooth and extends beyond the area 65 of the tooth terminating at the connecting surface 58 of the connecting element 53.

Despite the set-back wide tooth 65, in this embodiment 51 the connecting surface 58 of the toothed connecting element 53 has the same diameter in order to be able to seal below this tooth 65. The metal ring 79 is firmly bolted.

For this purpose, a bore 81 is provided in the metal ring 79 which coincides with the threaded blind hole of the toothed connecting element 53, which bore carries the head of the mechanical bolt 80. The lower part is enlarged to accommodate it. The channels 82 arranged in the region of the inner circumference of the metal ring 79 make it possible to center this metal ring 79 at the inner edge of the connecting surface 58 of the toothed connecting element 53.

The outer periphery of the metal ring 79 is provided in the area of the tooth 65 having a chamfered surface 83 running substantially tangentially with respect to the periphery of the worm 62, preventing contact with the worm 62. It is supposed to do. Seal ring 8 inserted in groove 84 running in the circumferential direction
5 is arranged below this chamfered region 53, and the outer periphery of the seal ring presses the inside of a cylindrical housing part 68 in the shape of a casing to provide a seal.

Between the two connecting elements 52 and 53, another seal 86 is provided on each side of the joining site 54 which houses the ball bearing race 55.

The housing part 68 is cut in the region of the worm 62 and the worm 62 and the tooth crown 65 are cut.
The gap created by the engagement with the worm 62
It is closed by a substantially cylindrical housing part 87 which surrounds the. The housing part 87 has a substantially semi-cylindrical shape in the center region of meshing, but the worm 6
At the peripheral edges 88, 89 on which the two are mounted or the drive motor 60 is mounted on the flange, the cross section of the housing part 87 corresponds to a substantially complete circle.

A lubricant 88 can be provided in the housing part 87, especially in the area opposite the mesh. In order to increase the drive torque, several, especially two drive motors 60 and worms 62, as well as housing parts 87 surrounding them, may be provided.

[Brief description of drawings]

FIG. 1 is a perspective view of a first embodiment of the present invention.

FIG. 2 is a cross-sectional view taken along the line II-II in FIG.

FIG. 3 is a plan view of a second embodiment of the present invention.

FIG. 4 is a sectional view taken along the line III-III in FIG.

[Explanation of symbols]

1 rotation connection device A few connection elements 4 junction sites 5 ball bearing races 6 blind holes 7 through bore 8, 9 Connection surface 12 pinion 13 volt 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 bolts 27 Front end 28 Housing parts 29 Weld 30 gap 31 seal ring 32 inner circumference 33 seal ring 34 Front end 35 Enlargement 36 Enlargement 37 continuous section 38 plates 39 bolt on 40 motor housing 51 Rotating connection device 52 Connection element 53 Connection element 54 Connected sites 55 ball bearing races 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

Continued front page    (72) Inventor Erich Ruth             Germany DAE-91350 Gremsch             Dorf Poppenwind 21 (72) Inventor Werner Schreppell             Germany DAE-90530 Wendel             Steinschlasse 28 Ar F-term (reference) 3J030 AC01 AC10 BA01 BA03                 3J063 AA15 AA25 AA33 AB02 AB03                       AB31 BA11 BB01 BB11 BB23                       CB12 CD02 CD41 XD11 XD31                       XD73 XF01

Claims (10)

[Claims] 1. Connection elements (2, 3; 5) for adapting axial and radial loads and tilting moments.
2, 53) and a rotary bearing formed as a single-row or multi-row roll bearing (5, 55) and a relative rotary movement of said connecting element (2, 3; 52, 53) A drive (10, 60) coupled to or connectable to both connection elements, such that the frame of the drive comprises a first connection element (2, 52)
The rotor of the drive is fixed to the pinion (1
2) or a worm (62), which pinion or worm meshes with the teeth (15, 65) on the casing side of the second connecting element (3, 52) and connects the connecting element (3, 53). Provided in the front end of the toothed connection element (3, 53) for fixing to the first mechanical part is a fixing means (6, 56) of the type of crown, which fixing means (6, 56) comprises Device (1, 51) for rotationally coupling two coaxial connecting elements (2, 3; 52, 53) arranged between the teeth (15, 65) and the rolling bearing (5, 55). The teeth (15, 65) of the connecting element (3, 53) are surrounded by at least one housing part (16, 66) fixed to the toothless connecting element (2, 52),
Said at least one housing part (16, 66)
The front end (1) opposite the connecting / fixing means (6, 56)
8) enclosing said toothed connecting element (3, 53), to which the toothless connecting element (2, 52) itself secures the toothless connecting element (2, 52) to a second machine part Locking means (7, 57) for locating the housing part (17, 66) between the mechanical part and the toothless connection element (2, 52), even if the housing part (17, 66) is present. Etc.) (7, 57), characterized in that there is a direct frictional connection between the machine part and the toothless connection element,
Device for rotatably coupling two coaxial connecting elements. 2. The second connecting element (3, 5) by machining or shaping the connecting element / base member.
Device according to claim 1, characterized in that guide passages and teeth (15, 65) for the ball bearing races (5, 55) according to 3) are formed. 3. One or both of said connecting elements (2, 3; 52, 53) are formed as concentric rings or washers, and the fastening means are crown-shaped bores (6, 7;). Device according to claim 1 or 2, characterized in that it is formed as 56, 57). 4. Device according to claim 1, wherein the toothed connecting element (3, 53) is embodied as an internal or external toothed crown. 5. The ball bearing race / guide passage of the toothed connecting element (3, 53) is arranged on the casing surface facing the tooth (15, 65). Equipment. 6. The radial length of the fixed bore (6, 56) of the toothed connecting element (3, 53) to the base of the ball bearing race / guide passage of the toothed connecting element (3, 53) is A device according to claim 5, characterized in that it corresponds substantially to the radial length of these bores (6, 56) from the base of the teeth (15, 65). 7. An internal thread is provided in a fixed bore (6, 56) in the toothed connecting element (3, 53), characterized in that it is provided with an internal thread. apparatus. 8. The fixing bore (6, 56) of the toothed connecting element (3, 53) is formed exclusively as a blind hole opening at its connecting / front end, the depth of which is Device according to any one of the preceding claims, characterized in that it is 1/2 to 3/4 of the total height of the toothed connecting element (3, 53). 9. The ball bearing races (5, 5)
As a result of the built-in guide passage for 5),
The floor of the fixed bore (6, 56) of the toothed connecting element (3, 53) is located approximately at the height of the largest projection or taper of the toothed connecting element (3, 53). Device according to claim 5, characterized in. 10. A housing part (16, 66) fixed to a toothed connecting element (2, 52) is provided along the front end (18) of said toothed connecting element (3, 53). Device according to any one of the preceding claims, characterized in that it extends parallel to and as an annular body (17, 67).