DE10065084A1 - Telescopic conveyor for stacking, loading and unloading has one or more telescopic tines made up of C-shaped base profile, U-shaped intermediate profile C-shaped load carrying profile - Google Patents

Abstract

The telescopic conveyor for stacking, loading and unloading has one or more telescopic tines. These are made up of a base profile (1), intermediate profile (2) and load carrying profile (3). The base and load carrying profiles are C-profiles and the intermediate profile is a U-profile.

Description

The invention relates to a telescopic conveyor for horizontal in and Outsourcing, relocating, stacking, loading and unloading of loads, e.g. B. in Shelf aisles, in warehouses, on production lines and conveyor systems, with Single tine or with "n" tines designed as a fork, assembled in one place or in many places, on stationary and / or mobile technology such as tables, Lift tables, transfer carriages, industrial trucks, storage and retrieval machines and like.

Such telescopic conveyors are in a wide variety of prior art Embodiments described. For example, in patent specification P 15 06 985.9 (N 30673) a load handler for control devices, hoists or the like. Which is driven by a rotating roller chain generated in which the chain drive is attached to the middle part, the upper part and The lower part engages in a tooth segment and so the middle part and the upper part over the Positive locking taken, a synchronous telescopic movement is generated. The load is carried out using support rollers, which are complex on both sides manufactured grooves, in the upper and lower part, run. The disadvantage is high Manufacturing costs due to high use of materials, mechanically on all sides machining drawing parts, in the moving drive on the middle part and in the high construction. The construction allows the use of alternative Drive systems not too. In the patent DE 35 19 780 a Design solution described, which consist of various mechanically processed Parts of the drawing exist and is constructed so that the drive down over the platen protrudes, the actual system on additional sliding frame and these are placed on a base frame, the Intermediate frame and the upper frame but according to the known system of Technology with loose pulley and traction devices articulated on both sides works. This system structure requires that all frames and their individual parts Drawing parts are and have to be machined extensively.  

The sliding elements used to guide the frame are wear parts. At the same time, they significantly increase manufacturing and maintenance costs. This design does not allow the use of alternative drive systems. The patent DE 42 05 856 has the content, through several individual drives for telescoping and simplification through friction wheel systems and To achieve stabilization of the known systems. A driven one revolving conveyor belt takes over transport boxes with the help of friction surfaces and / or loads, which are slightly raised by driving under the floor surface and drawn onto the conveyor by friction surfaces. Through this technique is only a simple change is necessary. The basic structure is relative simple and designed as a welded part. However, this system is preferably for smaller masses and containers or pallets with a continuous bottom used. In summary, there are the disadvantages of the known techniques as follows. The known techniques allow the use of alternative ones Drive systems not closed, this limits the universal use. The required cost-effectiveness, due to the large amount of effort drawing parts to be produced mechanically, excessive weight, space-intensive Construction, high assembly and maintenance costs is unfavorable. Adverse Operating conditions arise from the large construction, high weight and protruding components.

The invention was therefore based on the object of a telescopic conveyor horizontal handling of loads, with single tine or with "n" tines as Executed fork, set up in one place or in many places, on stationary and / or moving technology such as tables, lifting tables, transfer carriages, Industrial trucks, stacker cranes and the like to develop, which the does not have the aforementioned disadvantages and the economically justifiable Cost, functional and inexpensive, interchangeable drives in the Embed the entire system so that no components protrude and uniform constructive basic structure of the telescopic conveyor, alternative Drives, depending on the application and application, can be used, more effective Develop new drives and proven, well-known technologies for them  Make use case usable, new development of the overall structure with the aim of that with maximum power consumption, optimal functionality and reliability is achieved with low manufacturing, operator and maintenance costs.

According to the invention the object of this invention is achieved in that the Telescopic conveyor for the horizontal handling of loads, with single tine or with "n" tines designed as a fork, set up in one place or in many Places, on stationary and / or mobile technology such as tables, lifting tables, Transfer cars, industrial trucks, storage and retrieval machines and the like, between Conveyor lines and / or rack aisles is used Main components, namely the base profile, the middle profile and the Recording table consist of inexpensive steel construction profiles. Thereby the Base profile and the shooting table a subordinate function with low Manufacturing costs and the middle profile take on the main function. The The base profile is a C-profile that is open at the top and in which there are running rails on both sides are permanently installed. The between the top edge of the pair of rails and the lower edge of the C-profile is created on both sides as Guideway used for the first double-sided support rollers. The between the Free space remaining on the rails serves for the installation of the respective Telescopic drive. The shooting table is a C profile that is open at the bottom, in which tracks are permanently installed on both sides. The one between the bottom edge of the pair of tracks and the lower edge of the C-profile is used as a guideway for the second support rollers on both sides. The Fixed installation of the running rails takes place with an allowance so that after installation of the Profiles that are milled to size. The middle profile is a down open U-profile. On the webs, both outside, are the second support rollers on both sides, precisely fitted and aligned with each other, permanently attached. On the end faces of the U-profile, pointing downwards, are track rollers on both sides, precisely fitting and in alignment with each other, firmly attached, the middle piece carries it first double-sided support rollers, a perfect fit and aligned with each other, the Center piece is firmly installed centrally in the U-profile.

It is essential to the invention that the middle profile for the required Force absorption and tracking accuracy necessary support rollers and the track rollers  rigid, the centerpiece, pointing downwards, for the movement necessary driver of the drive, which is fixed in the free space of the base profile is installed. The base profile and the shooting table are with the middle profile capable of mating by milling the center profile with the first support rollers Free space is fit, then the shooting table with its milled Clearance fit on the second support rollers.

It is also essential that the track rollers between the, on both outer sides of the base profile milled, treads and the opening dimension of the legs of the C-profile of the recording table, traces. This is the invention lateral tracking accuracy of the overall system is achieved. The mutual Telescopic movement of the recording table to the left or right is done by the Drive for the receiving table by means of traction means that on both sides Middle profile end the principle of the loose roll is applied. That is, an end of Traction means is on the base profile and the other end of the traction means is on Recording table attached. There are two traction devices attached crosswise so that these mutually tensioned alternately, depending on the drive direction of the Middle profile, the shooting table either to the left or to the right over the Rolling loose is pulled from the center profile. The shooting table moves in the same direction as the middle profile but with twice the load speed. It is characteristic that while maintaining the basic structure of the developed Telescopic conveyor to install the most diverse drives in the base profile and are to be exchanged. During the development of the telescopic conveyor was also on proven techniques are used and for the special application constructively adapted.

System 1

Two roller chains of equal length are joined at one end to one Chain connector assembled so that this, via two double sprockets placed at a certain distance from each other in alignment in the basic profile are stored, the strands tensioned in the crusade and on two opposite Sides are attached to the center bar when the drive sprocket rotates freely moving past each other, generating the linear telescopic drive.

If the telescopic conveyor is in the middle position, both chain centers are located of the same length and crossed on the middle web. There is a wreath of each  Double sprocket of around one chain strand wrapped around 180 °. Will that When the drive sprocket is rotated, a chain center pulls the center profile stepless and linear in one direction in the working position. The retracted chain center becomes shorter from the middle, the drawn chain strand becomes from the middle longer. The developed link of the chain centers enables one normal roller chain run over double sprockets because the chain runs the Change the chain ring of the double sprockets during the run. That to the Joints of the roller chain center occurring moment can be ignored.

System 2

Two in a row at a certain distance from each other arranged synchronous pinion mesh with the toothed as a rack Middle piece. Since the middle profile with its ends over for functional reasons the center profile of the base profile must be pushed out, two pinions are required. If the system is in the middle position, both pinions are in mesh. Will the When the pinion is rotated, the rack moves the center profile continuously linear to the left or right in the working position. The rack runs out a pinion. If the direction of rotation changes, the rack runs conditionally due to the synchronization of the pinions, on the second pinion again. The function is mutually the same and thus generates the linear drive.

System 3

Linear motors are fixed in the base profile at the ends or in the middle built-in. The secondary elements are attached to the intermediate piece and move the middle profile continuously linearly, depending on the control of the linear motors the middle profile moves to the left or right in the working position and generate thus the linear drive.

System 4

A triple roller chain runs endlessly over two triple sprockets which the central gear was removed. The at a certain distance Sprockets installed in alignment with each other in the base profile carry the Triple roller chain so that the two outer link rows of the triple roller chain wrap the sprockets around 180 ° and when the Sprockets the toothed segment, which fits in the middle row of links grips linearly and continuously.

The triple roller chain is under the fitting of a chain guide supported. In the middle position of the system, the fitting is in the middle  the sprockets. When a sprocket is rotated, the chain moves between the chain wheels in the longitudinal direction and moves the fitting with Middle profile alternately to the left or right in the working position and thus creates the drive.

System 5

A rodless cylinder is fixed lengthways in the base profile built-in. The table attached to the movable piston is fixed to the central profile connected. If pressure is applied to the piston on one side, it moves continuously linear in one direction and takes the center profile with it. Depending on Pressurization will alternate the center profile to the left or right Working position moves and generates the drive. In the middle position of the system the piston of the working cylinder is also in the middle position.

System 6

In the basic profile there is a threaded spindle with a spindle nut installed that this is driven on one side and mounted on both sides, the Spindle nut can move freely along the threaded spindle and the absorbs the required thrust. The spindle nut is fixed with the middle profile connected that the rotation of the threaded spindle, depending on the direction of rotation Spindle nut with the middle profile to the left or right continuously linear in Working position is moved and thus generates the drive. In the middle position of the Systems, the spindle nut is located in the center of the threaded spindle.

By means of the solution according to the invention it has been possible to close a telescopic conveyor develop, which fully meets the requirements mentioned, in the constructive Construction was completely redeveloped, with the result that the construction was essential is easier and cheaper, a high degree of interchangeability has been achieved, Assembly and maintenance have become easier, improved mounting conditions were created and the basic structure can now be maintained alternative drive systems for the drive are used, which created a significantly cheaper price-performance ratio.

The solution according to the invention is described below using exemplary embodiments explained in more detail in connection with 11 figures:  

Show:

Fig. 1 is a side view of the telescoping conveyor according to the invention as a device with drive system 1,

Fig. 2 is a front view of Fig. 1 in the middle position,

Fig. 3 is a front view of FIG. 1 in extended position, indicated to the right and to the left extended position,

. Fig. 4 is a side view of Figure 1 exploded to show the drive - drive system 1,

Figure 5 is stretched representation. The chain strand and its connection to the drive system 1 of FIG. 1,

Fig. 6 is a schematic representation of the roller chain drive in the center position to drive system 1 of FIG. 1,

Fig. 7 is an illustration of the drive system 2 -. Rack drive to Figure 1 in the middle position - front view,

Fig. 8 is an illustration of the drive system. 3 - linear drive to Figure 1, etc. in central position front view,

Fig. 9 is an illustration of the drive system. 4 - triple roller chain drive to Figure 1 in the middle position - front view,

Fig. 10 is an illustration of the drive system 5 - cylinder drive to Figure 1 in the middle position -. Front View,

Fig. 11 is an illustration of the drive system 6 - threaded spindle drive to Fig. 1 in the central position - front view.

Fig. 1 shows the structure of the developed telescopic conveyor in a side view. You can see the base profile 1 which is built on contact plates 4 . Running rails 6 are permanently installed on both sides of the open C-profile. The free space at the bottom 31 between the upper edge of the running rail 6 and the lower edge of the base profile 1 is milled as a fitting dimension. The bearings for the drive shafts 10 are incorporated in the outer casing of the base profile 1 in alignment with one another and fitted in an exact fit. The receiving table 3 is a C-profile open at the bottom. Running rails 5 are permanently installed in the receiving table 3 on both sides. The free space at the top 32 between the lower edge of the running rail 5 and the upper edge of the receiving table 3 and the C opening dimension 35 are milled as a fitting dimension. The middle profile 2 is made of a U-profile. On the legs of the middle profile 2 outside are precisely fitted and aligned support rollers top 8 installed. On the leg end faces of the middle profile 2 track rollers 9 are firmly fitted and aligned with one another. In the middle of the middle profile 2 , the middle piece 30 is firmly connected pointing downward. The center piece protrudes through the opening 36 into the interior of the base profile 1 and carries the precisely fitting and mutually aligned lower support rollers 7 . The components described are shown assembled and they work with one another so that the support rollers below 7 , guided in the free space 31 , take up the load, that the support rollers top 8 , guided in the free space 32 , take up the load that the track rollers 9 in the free space 33 between bearing surfaces 34 on the base profile 1 and at the C-opening dimension of the receiving table 3 to ensure the lateral guidance of the central section 2 and the receiving table 3 35th As shown in FIG. 3, there are at least two track rollers 9 on both sides, at least three support rollers at the bottom 7 and three support rollers at the top 8 on both sides when the outer working position on the right or left is reached. This ensures the rigid load bearing and guiding accuracy of the telescopic conveyor even in the outer working position.

FIG. 2 shows FIG. 1 the front view in the middle position, namely the base profile 1 , the contact plates 4 , the center profile 2 , and the receiving table 3 shown invisibly.

In Fig. 3, Fig. 1 is shown in a front view with one side in the outer right working position of the center table 2 and the receiving table 3 , with the drive system 1 made visible - drive chain drive with roller chain center 12 , the outer right working position is indicated.

In Fig. 4, Fig. 1 is shown in a front view so that the center profile 2 and the receiving table 3 are pulled out of the spaces 31 , 32 and 33 , whereby the drive, system 1, namely chain center 12.1 and idler roller 14 with traction means 13th , the lower support rollers 7 , the upper support rollers 8 and the track rollers 9 on the central profile 2 are visible.

In FIG. 5, the Rollenkettentrums 12.1 / 12.2 in FIG. 1 stretched with roller chain connector 15 are illustrated.

FIG. 6 shows schematically the mode of operation of the roller chain drive of system 1 of FIG. 1 with central web 30 , roller chain center 12.1 / 12.2 , roller chain connector 15 , driven sprocket 11.1 and loose sprocket 11.2 .

The overall system functions in that the drive shaft 10.1 , driven by a motor, drives the chain sprocket 11.1 by being wrapped around the chain center 12.1 by about 180 °, the loose chain wheel 11.2 by being wrapped in the chain center 12.2 by about 180 ° is, the ends of the chain runs 12.1 / 12.2 pull the center profile 2 , continuously linear alternately to the left, right or center in the working position by firmly connecting them to the center web 30 , the center profile 2 pulls the receiving table 3 with traction means 13 via idler pulley 14 and moves it, can be absorbed whereby the load safe, telescoped, cantilevered and dropped continuously linearly guided in the free spaces 31/32/33 accurately.

The workflow is to be described using an example as follows. If there is a load on a Euro pallet in a row of shelves that is to be removed, this is done by stopping the storage and retrieval unit positioned in front of this parking space, telescoping the telescopic conveyor in such a way that two receiving tables 3 are designed as forks that pass the supports of the Euro pallet in the openings. Once the working position has been reached, the storage and retrieval unit lifts the load until it is raised freely and is on the receiving tables 3 .

Then the telescopic conveyor with the load telescopes into the middle working position. The load is thus outside the shelf in the rack aisle on the storage and retrieval machine and can be moved in the X and Y directions. Once the storage and retrieval machine has approached the destination, the telescopic conveyor telescopes the load into the required working position, holding it freely over the parking space and the storage and retrieval machine lowers until the load is firmly on the parking space and the receiving tables 3 of the telescopic conveyor are free. The telescopic conveyor then telescopes into the middle working position and the storage and retrieval machine can execute the next cycle. As is known, this sequence also takes place in the same or a similar sequence in other applications.

In Fig. 7, developed for the telescopic conveyor alternative drive systems 1 to 11, describes the how the system 1, shown in FIG., Are embedded in the base profile 1 and similar to that in Fig. 1 through 6, working. In the further description, reference is made to the drive of the central profile 2 , because the basic structure of the telescopic conveyor is retained and the drive of the receiving table 3 from the central profile 2 with traction means 13 and idler roller 14 takes place.

Fig. 7 System 2 rack and pinion drive

As with the chain drive Fig. 1, the drive system is permanently installed in the cavity of the base profile 1 . The drive shafts 10.1 / 10.2 are mounted transversely in the base profile 1 and installed in alignment at a certain distance. Two identical pinions 16.1 / 16.2 sit in the middle and are firmly connected to the drive shafts 10.1 / 10.2 . The center piece 30 of the center profile 2 carries the rack 19 or is made as a rack. If the drive shafts 10.1 / 10.2 are brought into rotation synchronously, the pinions 16.1 / 16.2 engage in the rack 19 of the central web 30 in such a way that the rotary movement is converted into a stepless linear movement. In the middle position Fig. 2 and 7 are both pinions 16.1 / 16.2 in the rack 19 in engagement. If the center piece 30 moves to the left or to the right, either the pinion 16.1 or the pinion 16.2 runs out of the rack 19 .

The center piece 30 is then driven either by the gear 16.1 or 16.2 . The frictional connection takes place from the drive motor via a duplex drive and cardan shafts to the drive shaft 10.1 , to gear 16.1 and drive shaft 10.2 , to gear 16.2 , to the rack 19 . The central profile 2 pulls the receiving table 3 with tension elements 13 , which are fastened at one end to the base profile 1 and at the other end to the receiving table 3 , alternately in the same direction via double rollers 14 at double speed.

Fig. 7 shows schematically the rack and pinion drive in the central position, without base profile 1 and center profile 2 .

Fig. 8 System 3 linear drive

As with the chain drive, Fig. 1, linear motors 22 are permanently installed in the cavity of the base profile 1 at the ends of the base profile 1 or in the middle. The secondary elements 23 are fastened to the intermediate piece 30 and, driven linearly by the linear motor, move the middle profile 2 continuously, depending on the actuation of the linear motors 22 to the left, right or in the center in the working position and thus generate the drive. The middle profile 2 pulls the receiving table 3 with tension elements 13 , which are fastened at one end to the base profile 1 and at the other end to the receiving table 3 , alternately in the same direction via double rollers 14 at double speed.

Fig. 8 schematically shows the linear actuator in the central position, without the base profile 1 and profile 2 shown means.

System 4 - chain drive - triple chain

As with the chain drive Fig. 1, the drive system is installed in the cavity of the base profile 1 . The drive shafts 10.1 / 10.2 are installed aligned in the base profile 1 aligned at a certain distance. Two identical double sprockets 17.1 / 17.2 are built so that the central ring of a triple sprocket has been removed, the double sprocket 17.1 is the drive wheel and the double sprocket 17.2 is the idler gear; they are firmly connected to the drive shafts 10.1 / 10.2 . The middle piece 30 of the middle profile 2 carries the driver 20 , which is designed as a toothed segment and is similar to a rack, engages in the middle links of the triple roller chain 18 . The outer links of the triple roller chain 18 loop around the double sprockets 17.1 / 17.2 in the outer sprocket rings in a form-fitting manner at approximately 180 °.

If the drive shaft 10.1 is brought into rotation, this drives the double chain wheel 17.1 , which pulls the triple roller chain 18 in the direction of rotation and this rotates the double chain wheel 17.2 as a loose wheel. The triple roller chain 18 tensioned via the double chain wheels 17.1 / 17.2 and supported by the chain guide 21 takes the center profile 2 continuously linearly via the driver 20 . The rotary movement is converted into a stepless linear movement and transferred directly to the center profile 2 . The middle profile 2 pulls the receiving table 3 with tension elements 13 , which are fastened at one end to the base profile 1 and at the other end to the receiving table 3 , alternately in the same direction by means of loose rollers 14 at double speed.

Fig. 9 shows schematically the chain drive in the central position, without base profile 1 and center profile 2 .

System 5 - cylinder drive

As with the chain drive Fig. 1, a rodless cylinder 24 is permanently installed in the cavity of the base profile 1 . The table 25 attached to the working piston is attached to the intermediate piece 30 . If the working piston of the working cylinder 24 is pressurized on one side, the working piston of the working cylinder 24 moves linearly continuously in one direction and takes the table 25 and the central profile 2 in a continuously linear manner. When the working piston is pressurized alternately, the telescopic conveyor moves alternately with it. The middle profile 2 pulls the receiving table 3 with tension elements 13 , which are fastened at one end to the base profile 1 and at the other end to the receiving table 3 , alternately in the same direction via double rollers 14 at double speed.

Fig. 10 schematically shows the drive cylinders in the middle position, without the base profile 1 and profile 2 shown means.

System 6 - threaded drive

As with the chain drive Fig. 1, a threaded spindle 26 is installed lengthways in the cavity of the base profile 1 so that it is supported at both ends with the drive 28 and counter bearing 29 and with a spindle nut 27 which is fixedly connected to the central piece 30 . If the threaded spindle 26 is driven, the spindle nut 27 moves on the threaded spindle 26 , depending on the direction of rotation to the left or to the right, and moves the center profile 2 alternately and linearly into the working positions. The middle profile 2 pulls the receiving table 3 with tension elements 13 , which are fastened at one end to the base profile 1 and at the other end to the receiving table 3 , alternately in the same direction via double rollers 14 at double speed.

Fig. 11 shows schematically the threaded spindle drive in the middle position, without the base profile 1 and profile 2 shown means.

REFERENCE SYMBOL

1

basic profile

2

agent profile

3

Shooting table

4

contact plate

5

Top track-up

6

Running track Down

7

Support roll-down

8th

Support roll-up

9

track rollers

10

Drive shaft (

10.1

+

10.2

)

11

Double sprocket (

11.1

+

11.2

)

12

Drive chain (

12.1

+

12.2

)

13

tension element

14

idler pulley

15

Zugkettenverbinder

16

Pinion (

16.1

+

16.2

)

17

Sprocket

18

Triple roller chain

19

rack

20

takeaway

21

chain guide

22

linear motor

23

secondary elements

24

Pistonless cylinder

25

table

26

screw

27

spindle nut

28

Drive screw

29

Thrust bearing spindle

30

center web

31

Space Down

32

Free space above

33

Tread outside

34

Tread inside

35

C-profile opening

Claims (12)

1. Telescopic conveyor for horizontal storage and retrieval, moving, stacking, loading and unloading of loads with single tine or with "n" tines as a fork, characterized in that they consist of inexpensive shaped profiles by the base profile and the receiving table from C -Profile and the middle profile are made of U-profile. 2. Telescopic conveyor for horizontal storage and retrieval, relocation, stacking, loading and unloading loads with a single tine or with "n" tines as a fork, according to claim 1, characterized in that for very large loads Molded parts are replaced by welded structures. 3. Telescopic conveyor for horizontal storage and retrieval, relocating, stacking, loading and unloading loads with a single tine or with "n" tines as a fork, according to claim 1 and 2, characterized in that alternative drive systems be built into the base profile.   4. Telescopic conveyor for horizontal storage and retrieval, relocation, stacking, loading and unloading loads with a single tine or with "n" tines as a fork, according to claim 1 and 2, characterized in that the central profile Supporting rollers and track rollers carries, an intermediate piece is arranged in the middle so that it builds into the interior of the base profile, carries support rollers and at the same time Connection element to the drive is. 5. Telescopic conveyor for horizontal storage and retrieval, relocating, stacking, loading and unloading loads with a single tine or with "n" tines as a fork, according to claim 1 and 2, characterized in that by installing Guides in the base profile and in the receiving table guides for the Support rollers are arranged. 6. Telescopic conveyor for horizontal storage and retrieval, relocation, stacking, loading and unloading loads with a single tine or with "n" tines as a fork, according to claim 1 to 4, characterized in that the lateral guide through Track rollers are carried out, which are arranged so that they are on lateral treads on the base profile and in the opening dimension of the C profile of the Track the recording table and are attached to the legs of the U-profile. 7. Telescopic conveyor for horizontal storage and retrieval, relocation, stacking, loading and unloading loads with a single tine or with "n" tines as a fork, according to claim 1 to 6, characterized in that two for the drive Chain centers are connected to each other so that they cross over two identical double sprockets continuously rotating in a stepless manner convert linear movement and thereby the drive for the telescopic conveyor is produced.   8. Telescopic conveyor for horizontal storage and retrieval, relocation, stacking, loading and unloading loads with a single tine or with "n" tines as a fork, according to claim 1 to 6, characterized in that by the design and Arrangement a rack and pinion drive is used as a drive. 9. Telescopic conveyor for horizontal storage and retrieval, relocation, stacking, loading and unloading loads with single tines or with "n" tines as a fork trained according to claim 1 to 6, characterized in that in the Basic profile built-in linear motors are used for the drive. 10. Telescopic conveyor for horizontal storage and retrieval, relocation, stacking, Loading and unloading loads with single tines or with "n" tines as forks trained according to claim 1 to 6, characterized in that in the Base profile installed a rotating triple roller chain as a drive for Application comes. 11. Telescopic conveyor for horizontal storage and retrieval, relocation, stacking Loading and unloading loads with single tines or with "n" tines as forks trained according to claim 1 to 6, characterized in that in the Base profile built in a working cylinder is used as a drive. 12. Telescopic conveyor for horizontal storage and retrieval, relocation, stacking, Loading and unloading loads with single tines or with "n" tines as forks trained according to claim 1 to 6, characterized in that in the Base profile built-in a threaded spindle drive as a drive for the application comes.