DE8017452U1 - DEVICE FOR LIFTING AND LOWERING LOADS - Google Patents

Description

Walter vom Brocke company, Lange Strasse 5630 Remseheid 1

hI / My / 1725 ^G

Device for lifting and lowering loads,

The present invention relates to a device for lifting and lowering loads, in particular on external walls of high-rise structures, consisting of a support structure, a boom that is hinged at one end to this vertically pivotable, which consists of a tubular support arm and an extension arm which is part-coping in this, wherein the latter is connected via a traction means to the support frame above the pivot point of the boom, in deflected free end of the support arm to the rear and attached to the rear end of the extension arm is, and the traction means limits the display of the boom to a maximum of the horizontal and the extension arm at its free end a boom head with a deflection

SchloBWeiche 20. P.O. Box 130219 ■ D-5600 Wuppertali Telephone (0202) 445096/451226 Telex: 8591273 soza

Patent attorney Dr.-lng.Dipl.-lng A. SoIf Patent attorney Dipl.-lne-ChcZapf

DR SOLF & ZAPF

Authorized representatives at the European Patent Office Professional Representatives before the European Patent Office

role and carrier guide means carries, wherein a pull rope is guided around the pulley, which is from one on the support frame attached, motor-driven cable drum and its free hanging down Has the end of a driver and a load hook.

In various construction projects, especially in building construction, you need consumables such as stones, bricks and cement be transported from the street to higher floors or lowered from these. To this Purpose so-called pulley blocks are known with which loads can be raised and lowered, but manually be operated and require a very high expenditure of force. There are also electrically powered construction elevators available, which consist of a support frame that is braced between the floor and ceiling of a room and on which a boom is pivotable or tiltable, which e.g. protrudes through a window recess and is at " Nem free end has a pulley, over which a rope with hooks for receiving loads is guided, the can then be moved vertically with the help of a motor.

Such a device is from DE-PS 1 16 * I6 23 known = This device has the disadvantage that to lower the load in the direction of the boom the force component of the load acting with the support frame counteracts the de-telescoping of the boom, whereby it comes to disturbances in the operation of such a device. It also proves to be more difficult that the extension arm is guided in this device via approaches in a groove of the support arm and it through the open groove leads to contamination during operation

^ loeWeiche 20, Postfach 130219 D-5600Wuppertal1 Telephone (0202) 445096/451226 Telex: 8591273 soza

Patent attorney Dr-lng.Dipl.-lng. A. SoH Patent attorney DipWng. Chr Zapf

'WMJ DR. SOLF & ZAFF

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increase the coefficient of friction when moving the boom. In addition, it can be due to the external forces or due to the contamination to a tilting of the extension arm in the support arm, so that the de-telescoping, but partly also the telescoping when pulling up the boom is obstructed or even impossible is made. To counteract this, attempts have been made according to DE-PS 1 16 46 23, a in the boom head second, lower stop edge to be arranged as a Mitnehaierführermittel so that the rope driver during the first lowering the load strikes against this edge and the vertical force component increases so that it entrains the Boom allowed. However, even such a device feature cannot meet the difficulties described Eliminate because the rope driver is already well before the horizontal position of the boom over the stop edge slips out of the boom head and reliable de-telescoping is then no longer possible. In addition, the known device has further disadvantages. The end position of the boom and thus its position relative to the support frame cannot be adjusted and the device is very bulky, whereby both the rope routing and the arrangement of the traction mechanism are very cumbersome for the Auleger.

The invention is based on the object of improving a device of the type mentioned in such a way that in particular a perfect telescoping of the boom is guaranteed and the device in a compact design as well easy to assemble.

According to the invention this is achieved in that the Aus

SchloBbleiche 20, Postfach 130219 -D-5600 Wuppertal 1 Palentanwalt Dr.-lng.Dipl.-lnp, A. SoIf

Telephone (0202) 445096/451226 Telex: 8591273 soza patent attorney DipL-lngCht Zapf

DR. SOLF & ZAPF

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-H-

casually for return via a swivel device with is connected to the support structure. The swivel device has the task of pointing towards the boom at least compensate for the force component acting on the support frame. An excess of force guides the boom with particularly reliable when lowering a load, so that the boom under all loads completely de-telescoped. It is useful in terms of a more compact design of the device if the Pivoting device consists of a compressive force element that ends at one end at a distance from the pivot axis on the support frame is attached to the boom and other ends to the support structure. One such element that when folding up the boom is compressed, forcibly loads the boom and supports its return to the Final delivery when lowering the load.

It is also useful if the compressive force element is attached to the support arm of the boom, since such an arrangement allows a more compact design. In an advantageous embodiment of the invention, there is the compressive force element from a gas spring.

Further features of the invention are the subject of subclaims 5 to 11.

The invention is explained by way of example with the aid of the drawing. Show it:

Fig. 1 schematically shows a side view of a

device according to the invention,

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Dft. SOLF & ZAPF

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Fig. 2 schematically shows the telescopic guide.

The device according to the invention is attached to a support frame 13. This consists of a support beam 1, at least at one end a spindle device 2 for Bracing of the support beam 1 has, for example, between the floor and ceiling of a room. The support beam 1 consists of a guide support 3 and an extension support 4, which can be telescoped longitudinally in the former is arranged and by a known clamping device (not shown) steplessly against the guide support 3 can be locked. The carriers 3, 4 have an annular cross section; however, any other form of carrier can also be used be used. On the support beam 1, a pivot frame 5 is mounted longitudinally displaceable, which by a Locking device 6 can be locked. According to the exemplary embodiment in FIG. 1, there is the swivel frame 5 from a frame web 7 with a circular ring cross-section, which is placed on the support beam 1, and on top and below each at right angles attached arms 8 and 9 and one, these connecting, running parallel to the frame web 7 Frame web 10, the latter three parts being able to have a rectangular cross-section. On the frame bridge 10 are arranged above and below horizontal bearing bars 11, on each of which a pin 12 is fastened vertically, the pins for mounting the support profile 15 serve, which has horizontal webs 14 with holes 14a, which are slightly larger than the diameter of the pin 12 and can be hooked into this pin and pivoting of the support profile 15 about the pin 12 is made possible. On the one made from a square profile existing support profile 15 is a support rod 16

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attached, which extends perpendicularly forward from the lower end of the support profile and which in a certain Distance from the support profile 15 is bent so that it runs parallel to this upwards. At their free The upper end 17 is the holding rod 16 through a housing 18 made of two parallel, vertically arranged profiled sheets connected to the support profile 15 for mounting a horizontally arranged rope pulley 22. Next to the case

18, a cable drum 19 is arranged horizontally and partially covered by a protective hood 20. The rope drum

19 is driven by an electric motor 23, which is arranged in a vertical position below the cable drum between the holding rod 16 and the support profile 15 and is held on the latter via a bracket 23a, so that the motor shaft extends through the center of the cable drum 19, the latter being flanged onto the shaft so that the cable drum 19 can be driven directly and without any gear reversals. To protect the motor 23 and other parts of the device, the support profile 15 and the retaining bracket 16 are connected via stiffening brackets 2k , which are semicircular.

At the lower end of the support profile 15, a boom is attached so that it can be swiveled up and down about the axis 46. He consists of a support arm 26 and an extension arm 27, which is telescopically longitudinally displaceable in the former. In the exemplary embodiment, both arms are designed as closed square profiles that can be slid into one another. The support arm 26 has at its end two plates arranged vertically and parallel to one another, between which two rollers 28 are arranged vertically one above the other and in alignment with one another so that their clear spacing

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is equal to or slightly greater than the thickness of the extension arm 27 between the rollers 28 on Ball bearings are arranged, is performed. The extension shaft 27 protrudes into the support arm 26 and carries a holding block 31 serving as a roll holder for support at its end located in the support arm 26, to which two rollers 32, preferably on the right and left, are attached, the spacing of which is selected so that or which are offset from one another diagonally that one is against the upper and the other against the lower Supported inner wall of the support arm 26, in cooperation with the rollers 28 an exact parallel Guiding of the extension arm 27 in the support arm 26 is ensured. To prevent the To reliably prevent extension arm 27 is a locking block at its end located in the support arm 26 33 attached on the top and / or underside, which when it hits against a roller 28 or a corresponding one in the support arm or the stopper attached to the plates 30 marks the furthest extent of the extension arm 27.

^{In the rear end area of the extension arm 27, a chain 3 1} I is fastened in front of the holding block 31 on the extension arm, preferably on the upper side. This is deflected from below around a deflection roller 35 arranged between the plates 30 and in front of the upper roller 28, deflected upwards and backwards and attached to the support rail 15 above the pivot point kS . It is attached via a plug-in device 36, which consists of a box-like housing with a side slot for inserting a chain link of the chain. The engaged chain link can then, for example, via a locking

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Patent attorney Dr.-Ing Dipl.-Ing A. SoIf Palentanwalt DipL-lng CJx Zapf

DR SOLF & ZAPF

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pin are set so that the chain 34 can not slip out. The simple one may also suffice under certain circumstances Attaching the chain link, because of the position of the following and present one, shifted by about 90 degrees Chain link of the chain locking can be guaranteed. The length of the chain 34 can be increased at any time simple repositioning of a chain link can be changed as required.

Another connection of the boom 25 with the support profile 15 consists of the pressure force element 37, which according to the exemplary embodiment is a gas pressure spring known per se is trained. The gas pressure spring 37 is articulated below the plug connection 36 of the chain 34 on the carrier profile 15 posted and articulated on the other end to the support arm 26 of the boom 25. The maximum stroke is reached when the boom 25 is pivoted to the horizontal.

A boom head 38 is attached to the front free end of the extension arm 27. This consists of at least two parallel, vertically arranged sheets 39 of almost isosceles triangular shape, between which in the upper angular range a pulley 40 is arranged on a horizontal axis 40a. To this pulley 40 is the rope 21, which is wound on the rope drum 19 and over the rope pulley 22 from this is withdrawn, guided so that it can freely run vertically downward from the boom head 38. On his At the lower end 21b, the rope 21 has a rope ball 41 and a hook 42 for hooking loads. in the Boom head 38 four round rails 45 are attached to the sheets 39, which are arranged so that their axes in

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Patent attorney Dr.-ln & Dipl.-lng.A.Solf Patent attorney DipL-Ing-ChcZapf

DR. SOLF & ZAPF

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- 9 -

Cross-section form the corner points of a square and have a distance from one another which is so large that the Ball 41 can be guided between the round rails 45. The round rails are extending from the lower intake area 43 of the rope 21 obliquely upwards in the direction of the extension arm 27. To insert the ball 41 between To facilitate the round rails 45, the two upper and lower pairs of round rails are above the jib head 38 also extended as tongues 44, 44a, so that the ball 41 strikes against this when the rope 21b is pulled up and then guided into the boom head 38 according to the gradient of the round rails 45.

The operation of the device according to the invention is as follows:

When used in building construction, the support beam 1 is between the floor and ceiling of a room via the spindle device 2 braced. In the case of particularly low or high rooms, the length of the support beam 1 can be adjusted accordingly Moving the extension support 4 in the guide support 3 can be varied. When used e.g. on flat roofs or in rooms in which no ceiling has yet been cast, the spindle device 2, for example, is replaced by a The joint replaces the support beam 1 with at least two, preferably V-shaped, rails diverging from one another (not shown) connects, wherein a right angle is formed between the rails and the support beam 1. In order to prevent this device from tipping over, the free ends of the rails can be loaded with counterweights.

Schloßbleiche 20, Postfach 130219 D-5600 Wuppertal 1 Tetefon (0202) 445096/451226 Telex: 8591273 soza

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Ί DR.SOLF & ZAPF

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- 10 -

The boom 25 is used to pull up the loads initially in a horizontal position. The extension arm 27 is executed maximally from the support arm 26, there the locking block 33 is struck against the lower roller 28 between the plates 30. The gas spring 37 has reaches its maximum stroke. The chain 34 has also reached its maximum free length and holds the boom 25 in a horizontal position. The rope 21 and thus the ball 41 and the hook 42 hang down so far that a load can be hung from them. The motor 23 is then switched on via a corresponding switch (not shown) is put into operation via the motor shaft the cable drum 19 is driven, which the cable 21, which over the pulley 40 of the boom head 38 and the Deflection pulley 22 runs, winds up, whereby the free rope length is shortened and the load is raised. the The lifting speed is, for example, 25 meters per minute. With continuous shortening of the rope, the Ball 41 is brought so close to the boom head 38 until it hits one or both of the protruding tongues 44, 44a of the round rails 45 abuts. At this moment, the lifting direction of the ball 41 is changed and it slips along the tongue 44 between the round rails 45 into the interior of the boom head 38 and slides between the round rails 45 into this until it has reached a position approximately below the deflection roller 40. One further shortening of the lower free cable end 21b is no longer possible, rather the ball is supported 41 from this point onwards against the boom head 38 over the upper round rails 45 from. As the rope part 21a is continuously shortened, the jib head becomes 38 and with it the boom 25 is raised. Through the

ichloßbleiche20, Pestfach 130219 ■ D-5600Wuppertal 1 ^^^

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- 11 -

Inclined position of the boom 25 and the resulting force component of the load or of the extension arm 27 in In the direction of the boom 25 in the direction of the pivot axis 46, the extension arm 27 becomes the support arm 26 printed. The extension arm 27 slides continuously over the rollers 28 and 32 into the carrier arm 26, because it is held at the end by the chain 34. It goes without saying that the motor power was chosen to be so large must be that it can lift the moving parts of the device and the load and the resistance of the Gas spring 37 is overcome. The latter is continuously compressed when the boom 25 is raised until the boom 25 has reached its highest position (shown in phantom in Fig. 1) in which the engine 23 is turned off using the appropriate switch.

The inventive arrangement of the round rails 45 in the boom head 38 hangs the hook 42 and thus also the attached load regardless of the angle of inclination of the boom 25 always vertically downwards and cannot slip .

After reaching the end position, the device e.g. pivoted around the pin 12 and the load removed.

After the device has been returned to its initial position, the direction of rotation of the motor is reversed and the rope 21 unrolled from the rope drum 19 again. The compressive force of the gas spring 37 and the tensile force of the Ball 41 in the positive guide 45 now cause parallel with the extension of the rope 21 a lowering of the boom 25 to the horizontal position, wherein the Extension arm 27 withdrawn from support arm 26.

Schloßbleiche 20, Postlach 130219 D-5600 \ Mjppertal1 Patent Attorney Dr.-lng.Dipl.-lng.A. So"

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- 12 -

After the boom 25 has reached its horizontal position, the rope ball 41 slides, which is in the Has supported the downward movement of the boom 25 against the two lower round rails 45, from the boom head 38 and the load can be lowered to the ground. In particular through the interaction of the gas pressure spring 37 and the advantageous roller mounting of the extension arm 27 in the support arm 26 is a reliable one Telescoping the boom 25 is always guaranteed. The lifting process then begins again as described. Through a Repositioning the chain 34 in the connector 36 can reduce the free length of the chain 34 and thus the display of the Boom 25 can be adjusted.

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Claims (1)

Expectations 10 15th Device for lifting and lowering loads, in particular on the outer walls of buildings, consisting of a support frame, a boom which is pivoted vertically at one end and which consists of a tubular There is a support arm and a telescopic extension arm in this, the latter having a Traction means is connected to the support frame above the pivot point of the boom, in the free end area of the support arm is deflected backwards and attached to the rear end of the extension arm and the traction means limits the display of the boom to a maximum of the horizontal and the extension arm carries at its free end a boom head with a pulley and driver guide means, wherein around the pulley a pull rope is guided by SchloBbleiche 20, Postfach 130219 D-5600 Wuppertal 1 Telephone (0202) 445096/451226 Telex: 8591273 soza Patent attorney Dr.-lngDipl.-lng.A.SoK Patent attorney Dipt.-lng.ChxZapf Ml J DR SOLF & ZAPF Authorized representatives at the European Palentamt
Professional Representatives before the European Patent Office - 2 - a motor-driven cable drum attached to the support frame and free of charge has a downwardly hanging end a driver and a load hook, characterized in that that the cantilever arm (25) for return via a pivoting device (37) with the support frame (13,15,). 2. Apparatus according to claim 1, characterized in that g e that the swivel device (37) consists of a compressive force element which is attached at one end to the boom (25) and at the other end to the support frame (13, 15) at a distance from the articulated connection (46).
15th 3. Apparatus according to claim 2, characterized in that the compressive force element (37) is attached to the support arm (26) of the boom (25). 4. Apparatus according to claim 2 and / or 3, d a through characterized in that the compressive force element (37) is a compression spring. 5. Device according to one or more of claims 1 to 4, characterized in that that the extension arm (27) and the support arm (26) are closed square profiles. 6. Apparatus according to claim 5, characterized in that that the extension arm (27) can be displaced via rollers (28) in the support arm (26) diloßbleiche 20, Postfach 130219 · D-5600 Wuppertaii Patentanwalt Dr.-lngDipl.-lrig.A.SoK Hefon (0202) 445096/451226 Telex: 8591273 soza patent attorney DipWno, Chr. Tap DR. SOLF & ZAPF Authorized representative at the European Patent Office
Professional Representatives before the European Patent Office 10 15th is arranged and that the end of the extension arm (27) located in the support arm (26) has rollers (32), which are supported against the inner wall of the support arm (26). Device according to claim 6, characterized in that that the rollers (28) at the free end of the support arm (27) are arranged vertically one above the other in alignment with one another and the distance their surfaces is equal to or slightly greater than the thickness of the extension arm (26) and the rollers (32) are attached to the extension arm (26) in such a way that it is parallel to the Support arm (27) runs. Device according to one or more of Claims 1 to 7, characterized in that the traction means (3 ¹ I) is a chain. 9. Apparatus according to claim 8, characterized in that that the chain (3 * 1) with at least one link in a plug-in device (36) is inserted and attached to the support frame (13, 15), 10. Device according to one or more of claims 1 to 9, characterized in that that the driver guide means (45) are arranged in the boom head (38) in the pull-in area of the rope (21b), have outstanding tongues (44, 44a), which act as a stop for one above the load hook (42) arranged guide ball (41) is used. Schloßbleiche 20. P.O. Box 130219 · D-5600 WjppertaH Tetefon (0202) 445096/451226 Telex: 8591273 soza Patent attorney Dr.-lng.Dipl.-lng. A. SoIf Patent attorney Dipl-Ing. Cht Zapf DR.SOLF & ZAPF Authorized representatives at the European Patent Office Professional Representatives before the European Patent Office 11th -H- Device according to one or more of the claims 1 to 10, characterized in that the cable drum (19) for receiving the cable (21) which is steered via an upstream pulley (22), arranged horizontally and on the support frame (13,15) is attached and attached to the shaft of a vertically arranged on the support frame (13,15) Motor (23) is flanged. Schloßbleiche 20, Postfach 130219 ■ D-5600 Wjppertali Telephone (0202) 445096/451226 Telex: 8591273 soza Patent application Dr.-lng.Dipl.-lng. Λ SoIf Patent attorney Dipl.-Ing. Chr. Zapf