DE3921002A1 - Spindle drive with at least three rollers - has rollers mounted in housing, in staggered formation, and has tapering driven spindle - Google Patents

Abstract

The spindle drive has at least three rollers (6) mounted in a housing (7) and enclosing the driven spindle (1) which tapers. Rollers (6) in a roller-housing (7) are in a staggered formation in the direction of travel. The mounting housing (7) is guided in a guide parallel to the spindle. USE/ADVANTAGE - The spindle drive drives a roller housing by means of spindle holders.

Description

The invention relates to a spindle drive with more multi-position spindle.

The drive can be used with loads or people trains, stacking tools, high-pressure presses, cranes or other find regulated transport systems.

The invention is an element of the Ma engineering. Transport systems are state of the art: with cable, hydraulics, pneumatics, spindle and Worm drives for low lifting heights.

The invention has for its object to provide a spindle drive in which the driven by the spindle ( 1 ) roller housing ( 7 ) on the Spindelhalterun gene ( 2 ) can be moved away. Drives with a multi-bearing spindle are not known to the applicant.

The construction is based on a spindle ( 1 ) with multiple bearings, which can be dismantled in sections. The spindle ( 1 ) is regularly stored in spindle holders ( 2 ) ( Fig. 1, 2, 3, 4). The location shift, for example a conveyor cage works in such a way that it is attached to at least one roller housing ( 7/8 ). In this sem there are at least 3 rollers ( 6 ) with the negative thread of the spindle thread. The 3 rollers ( 6 ) are in the plan on the corners of an equilateral triangle around the spindle ( 1 ). In the elevation, the rollers ( 6 ) are offset from one another in each case by a thread pitch in order to ensure the flow of force during the transition over the spindle holders ( 2 ). In order to prevent rotation of the conveyor basket around the running spindle ( 1 ) and to ensure the transition via the spindle holders, there is a guide parallel to the spindle ( 1 ).

Features of the invention are:

1. Great variability and combination of different possible uses (see above):
In addition, it is possible that on a spindle ( 1 ) pressed equally - pulled, or pressed pressed with priority or vice versa; or that by lining up spindle shots different types of threads simultaneously (during the same rotation of the spindle ( 1 ) pressed or pulled, loaded, conveyed or also held at rest in time ( 31 ) ( Fig .: 6), thereby achievable in that the Spindle ( 1 ) is locally turned to the basic thread diameter and movement of the rollers ( 6 ) only starts again when a pulse generator ( 32 ) (other roller housing ( 7 ), which can then be stationary or not - length of the rollers ( 6 ) in relation to the amount of twisting - neighboring spindle systems, which are controlled in a coupled manner or decentralized power transmission systems, such as: motors, pneumatics, hydraulics) raise or lower the rollers ( 6 ).

On the other hand, a controlled rotation (rotation space 25 ) may also be desired, for example in order to rotate the material to be conveyed to a different level, where it is in turn driven with other previously free roller housings ( 7 ) with rollers of a different thread type, in other spindle drive systems ( 26 ). overlaps in order to experience the same or different types of transportation, or only to be released from the spindle drive (27) in order to be used in a way that is determined by use via a transport system that is perpendicular to the original drive (spindle drive with a multi-mounted spindle or conveyor belt, etc.).

This can be accomplished by forming a serpentine line in the rotation prevention guide - rail ( 10 ) or the like -, or partially removing and inserting it at an aligned or other location ( 28 ) (but automatically fold-out, if necessary, external stop switch ( 33 ) necessary if rotation room ( 25 ) is used in connection with waiting room ( 31 )).

A passenger elevator cabin, for example, could be so both vertically and horizontally in different transport parts of the building and back, whereby the spindle drive, hidden in building beams, in Columns or corners of the interior of a cabin not affected in any way and a simultaneous Use as a facade (which only on a wall slot runs along) and building elevator with the same cabin is possible without getting on or off.

Also locks, barriers for elevator cars doors and entrances can thus be in the system without additional automatic pneumatics or the like will.

There are also conceivable telescopic spindles ( Fig. 7.), which has the form that several roller housings ( 7 ) with a tube ( 21 a / 22 a) with the outer diameter of the narrow housing outer diameter (or simply very long roller housing ( 7/21 a)) are connected and around this tube ( 21 a) a thread is turned in order to receive a roller housing tube ( 21 a / 22 a); For static support of that system variant, a pipe ( 23 a) of large diameter, which is firmly anchored to the pillow block ( 3 ), could also be used, which is also able to hold the spindle holders ( 2 ), the guide rail ( 10 ), carrier ( 4 ) and To store camp shoes ( 11 ) statically - to bind and as the main beam is directly connected to them. Dar tube support ( 23 a) could at the same time accommodate a guide bearing ( 24 a / b), thereby supporting roller housing tubes ( 21 a / 22 a) and spindle ( 1 ) and stabilizing the system; - or vice versa ( Fig. 8).

That is, the roller gear houses ear with the largest diameter (22 b) is fixedly mounted, vehicle operational static main accepts and (friction + other drive system increase) which now drives through its rollers (6) in the spindle direction freely movable roll cradles houses ear (22 b), which in turn, via its rollers ( 6 ), a 2nd, 3rd etc. roller housing tube ( 21 b etc.), or so immediately rotates the spindle ( 1 ). This can in turn be connected via its spindle holders ( 2 ) to a large carrier tube ( 23 b), which, however, now moves in the transport direction with the spindle ( 1 ).

The carrier tube ( 23 b) has the inner diameter <outer diameter of the largest roller housing tube ( 22 b) and is slipped over the entire system like a hat, but without losing a controlled alignment to the roller housing tube ( 22 b), such that the guide bearing ( 24 b) in contrast to 24 a must inevitably be such that movement is only permitted in a controlled manner in order to prevent torsional moments of the spindle telescope drive system. In Fig. 8, a pillow block in favor of a simple base block ( 3 b), on the support tube ( 23 a / b) on a guide slot, which would have been designed like a roller housing opening, can be dispensed with. Maintenance is carried out via maintenance access (doors).

With telescope system a ( Fig. 7), material to be conveyed, e.g. an elevator car, can be attached to the roller housing tube 22 b (or also 21 b if the telescope is never fully retracted), with system b ( Fig. 8) directly around the carrier tube ( 23 b) , or anchor it on the cover of 23 b.

It would also be conceivable to turn a left-hand thread out of phase with a right-hand spindle thread ( 29 ). This ensures that a roller housing ( 7 ), possibly only temporarily (automatic - mechanical opening and closing of the 2nd, 3rd ... thread entry for rollers ( 6 ), ( 30 ) and combination with ( 32 )) , För derrichtung and back again, can move without changing the direction of rotation of the spindle ( 1 ); This means having to let the drive run in reverse (deceleration start-up time, load on motor, gear and clutch constraint), or reducing the speed of the motor. Rollers ( 6 ) can be made so that they run on different spindle threads.

2. Good construction - dismantling and maintenance

The spindle drive with a multi-bearing spindle is broken down into sections, can be dismantled and assembled. If the conveyor thread is a right-hand thread (otherwise vice versa), the spindle parts ( 1 ) are screwed to the left-hand thread by the spindle holders ( 19 ) so that the threaded parts do not unscrew under load and with a countersunk thread mandrel ( 18 ) secured ( Fig. 2, Fig. 3 AA).

Transversely to the conveying direction, the spindle ( 1 ) is supported by spindle holders ( 2 ), which can be pushed back and forth in a bearing shoe ( 11 ), locked in a controlled, precisely aligned manner using an adjusting screw with vernier or micrometer scale ( 17 ) .

These bearing shoes ( 11 ) are screwed to a support ( 4 ) which is ausgebil det in the form of a steel T, U or I support or can only be a suitable wall or the like.

The spindle ( 1 ) is probably preferably at the bottom (as this eliminates major static concerns in the event of building renovation measures such as lifts with a cable pull, fixed supports for deflection pulleys, etc.) via a sprocket ( 5 ) that fits positively over a polygon driven over the spindle ( 1 ), driven.

The spindle ( 1 ) is, if it should stand at all, on a pillow block ( 3 ), which can be connected to the carrier ( 4 ) via the carrier spindle distance adjustment ( 17 ) described above (sheet 6, line 25). Plummer block + I-Ü-T beams can be optimally attached to irregular surfaces using variably adjustable wedge bearings ( 20 ).

The rollers ( 6 ) are held by roller bearings ( 8/15 ) ( Fig. 1, 4), through an externally conically milled slot ( 12 ) through the roller housing ( 7 ), preferably made as a tube, passed and screwed. Roller bearings ( 8/15 ), rollers ( 6 ) and roller housing ( 7 ) are individual parts that can be easily replaced, exchanged or reversed, if necessary:
8 = roller bearing with means of transport attachment
15 = roller bearing without means of attachment.

The contact pressure or the optimally controlled integration of the spindle ( 1 ) into the roller housing ( 7 ) can be adjusted via a double-acting wedge device ( 16 ), a wedge being locked with a screw with a vernier or micrometer scale.

If it should appear necessary not to replace the bearing housing ( 7 ) together with the rollers ( 6 ) in this way - to wait, to simply let it move out of the free spindle side (the one without drive) and to disassemble it, a roller housing would also be closed ( 13 ) possible, which makes the roller housing on the spindle separable into at least 2 parts.

An increase in carrying / transportation capacity can either by increasing the number of roller housings a conveyed good, or by placing a 2nd or even more spindle drives with multiple bearings ter spindle (in connection with conveyed goods and modifi adorned coupled original drive) (no rotation possible) without eliminating the 1st spindle drive and inevitably to larger spindle diameters to have to resort (regulated rotation possible).

The spindle drive with a multi-mounted spindle can be operated behind a casing ( 14 ) to protect against accidents and dust, whereby behind the casing ( 14 ) a dust and moisture-proof space [r] can also be integrated, the control and control technology that preferably incrementally multiplied by the number of revolutions the thread pitch height of the spindle ( 1 ) is regulated, can take up centrally. If a spindle drive with a spindle with multiple bearings is defective, it is impossible for any system parts to crash.

3. Minimum space requirement, minimization of expenditure or forces to be absorbed, optimization of material and energy consumption

Now the roller housing guide, which must run parallel to the spindle ( 1 ) or the conveying direction to prevent rotation, as described in the drawings, be used, ie, ball-bearing roller housing guide ( 9 ) engages longitudinally on a continuous guide rail ( 10 ). drive, control and control technology, static handling of weight and, since one-sided, torsional forces that are either centralized by the spindle ( 1 ) itself (diameter of the spindle ( 1 ) or the number and spacing of the spindle holders ( 2 )), or decentrally via existing or modified carrier-sled constructions, to a minimum space requirement (which - example elevator - fits in every corner of the room).

Due to the low thread pitch, easy Motors, wind converters, water turbines with less Power or manual and foot operation to drive the spindle are used.

We can see from the example of a passenger elevator that due to the small space requirement, the optimization of central force absorption in the system, Op timing of possible variations and secondary uses, optimization of power transmission (engine or similar), optimization of assembly, accident protection and Maintenance, installation in both high-rise buildings, as well in the course of renovation work in old buildings over only one floor height, without major structural changes is to be accomplished and contrary to Elevators with cable, on roof structures and huge Bearing foundation anchorages can be dispensed with.

The invention can be used commercially for transportation systems be used.

This invention enables very long transport routes with spindle drive with a consistent principle be overcome.  

1 spindle
2 spindle holder
3 pillow block bearings
3 b ( Fig. 8) Simple base block without pillow block
4 carriers
5 drive
5 b Drive via rollers in the telescopic spindle variant Fig. 8
6 reels
7 roller housing
8 roller bearings with transport attachment
9 Leadership (exclusion or regulation of rotation)
10 guide rail (rotation exclusion or control)
11 camp shoe
12 slot (conical on the outside)
13 roller housing lock
14 cladding
15 bearing rollers without means of attachment
16 Contact pressure adjustment with vernier or micrometer scale
17 Fine adjustment of the spindle holder ( 2 ) bracket or base block 3/3 b bracket
18 mandrel (locking of individual spindle shots
19 spindle part thread with left-hand thread
20 variable wedge support (for fastening the support structure to walls, floors or other fastening options)
21 a / b roller housing tube ( Fig. 7, 8)
22 a / b roller housing tube ( Fig. 7, 8)
23 a / b tube supports
24 a guide bearing (guidance of the tube support - Fig. 8)
25 rotation space ( FIG. 6)
26 spindle drive
27 Space to release
28 Removing and inserting the guide rail
29 Double turned spindle (left and right hand thread)
30 Automatic opening and closing of a thread entry
31 waiting room
32 pulse generators (nudging roller housings in the waiting room - 7 -)
33 Automatic stop switch for the rotational movement
[r] space for regulation and control system (incremental)

Claims (4)

1. spindle drive with multi-bearing spindle, characterized in that:
... at least 3 arranged at a uniform angle to each other, in a housing ( 7 ) mounted rollers ( 6 ) with a negative profile of the spindle thread, which surround the driven spindle ( 1 );
... the spindle ( 1 ) tapers at certain intervals in order to be able to accommodate the spindle holders ( 2 ) with the inside diameter plus the ball bearing construction space of the ver young spindle ( 1 ) and the outside diameter of the basic thread thread diameter;
... the rollers ( 6 ) in the roller housing ( 7 ) are offset from each other in the direction of conveyance so that they gradually take over force during the transition via the spindle holders (bearings of the Spin del ( 2 );
... the bearing housing (7) is guided in a plane extending parallel to the spindle (1) guide so that the spindle supports (2) slot with a solid Long the roll casing (7) are aligned at the crossing of the spindle supports (2) and thus the housing opening on the spindle holders ( 2 ) can slide in before. 2. Spindle drive according to claim 1, characterized in that the length of the rollers ( 6 ) each has at least 2 Ge thread pitches more than the height of the respective spindle holder ( 2 ). 3. Spindle drive according to claim 1 or 2, characterized in that there is a conveyor basket on the roller housing ( 7/8 ). 4. Spindle drive according to claim 1, 2 or 3 characterized in that the guide of the housing opening ( 7 ) on the spindle holders ( 2 ) between the individual spindle holders ( 2 ) is designed so that both regulated, free and no rotation of the roller housing ( 7 ) can occur.