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WO1999052739A1 - Dispositif telescopique - Google Patents

Dispositif telescopique Download PDF

Info

Publication number
WO1999052739A1
WO1999052739A1 PCT/SE1999/000558 SE9900558W WO9952739A1 WO 1999052739 A1 WO1999052739 A1 WO 1999052739A1 SE 9900558 W SE9900558 W SE 9900558W WO 9952739 A1 WO9952739 A1 WO 9952739A1
Authority
WO
WIPO (PCT)
Prior art keywords
rod
nut
telescoping device
housing
catcher
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/SE1999/000558
Other languages
English (en)
Inventor
Åke ASPLUND
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to AU40658/99A priority Critical patent/AU4065899A/en
Priority to CA002327250A priority patent/CA2327250A1/fr
Publication of WO1999052739A1 publication Critical patent/WO1999052739A1/fr
Priority to NO20005029A priority patent/NO20005029D0/no
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D33/00—Superstructures for load-carrying vehicles
    • B62D33/02—Platforms; Open load compartments
    • B62D33/0207—Connections of movable or detachable racks or stanchions to platforms
    • B62D33/0215—Connections of movable or detachable racks or stanchions to platforms for log hauling vehicles

Definitions

  • This invention relates to a telescoping device.
  • Such a device can for example be used as a support pillar for a load platform of a vehicle and such a vehicle can for example be a vehicle for carrying timber.
  • a vehicle can for example be a vehicle for carrying timber.
  • the operator will loose time if the height of the support pillars cannot be varied and there will also be a risk that he hits the pillars with the crane and destroys them if they are much higher than the actual load.
  • the height of the pillars can be adjusted to the actual height of the load both during the loading and unloading.
  • Two part telescoping support pillars are known in the prior art but robust power actuated three part support pillars of this kind are not available on the market.
  • the invention relates to telescoping devices of this kind which are load supporting pillars for load vehicles, for example vehicles for carrying timber.
  • Figure 1 shows in a longitudinal section a telescoping support pillar in its withdrawn position.
  • Figure 2 shows the same support pillar in a partly extended position.
  • Figure 3 shows the same support pillar in a fully extended position.
  • Figures 4-6 show in perspective views various details of the device shown in figures 1-3.
  • Figure 7 is another view partly in section of some elements.
  • FIGS 8 and 9 are schematic sections that show some elements in various positions
  • Figures 1-3 show in various positions and in section a support pillar for a load vehicle, for example a vehicle for carrying timber.
  • the pillar has a lower tube formed base part 11, a tubular intermediate part 12 and a tube formed upper (longitudinally outer) part 13.
  • Figure 1 shows the pillar fully withdrawn, that is. the two parts 12,13 are telescopically withdrawn.
  • Figure 2 show 2 the intermediate part 12 extended.
  • Figure 3 show the intermediate part 12 extended and also the upper part 13 extended out of the intermediate portion 12.
  • the intermediate part 12 is mounted on a housing 14 that is carried by a rotatable threaded rod 15 and it is guided in the base part 11.
  • the housing 14 carries a rotatable threaded rod 16 and the rod 16 carries a carrier 17 on which the upper tube formed part 13 is mounted.
  • the carrier 17 is guided in the intermediate part 12.
  • a guiding tube 18 is also mounted on the carrier and it extends outside the rod 15 and guides the rod.
  • the lower part 11 of the pillar is mounted on a plate 19.
  • the rod 15 is mounted on the plate 19 which by the mounting makes the rod rotatable.
  • the plate 19 is to be mounted on the chassis or on the load platform of the vehicle.
  • a motor 20 is mounted on the plate 19 and coupled to rotate the rod 15 through a chain transmission 21.
  • Figure 4 shows, like figure 1 but on a larger scale, the base part 11 of the pillar in its withdrawn position and it shows some elements that are not illustrated in figures 1-3.
  • the motor 20 is tumable and a spring 25 forces it into a normal position. If the motor turns in either direction from its normal position against the spring force, a cam 22 will actuate a switch 23 to switch off the current to the motor. In this way, the stress on the motor and on all the other elements of the pillar will be reduced.
  • the torque can alternatively be sensed in another way; the current can for example be sensed and the current can be switched off when it reaches a predetermined level.
  • a nut 30 in the housing 14 is journaled in the housing and in engagement with the threads of the rod 15.
  • the nut 30 has an outer gear rim 31 in direct engagement with a gear rim 32 on the rod 16.
  • the rod 15 has a screw 33 screwed into it from the side and the housing 14 has a shoulder 34.
  • the head of the screw 33 stopping against the shoulder 34 defines the lower end position of the housing 14. In this way, a rotation stop is defined. If the housing instead should move against an axial stop, the threaded connection could jam so that the motor would not be able to turn the rod 15 loose again.
  • the carrier 17 has a sleeve-like portion 35 with an interior thread in engagement with the rod 16.
  • the rod 16 carries a screw 36 and the carrier 17 has a shoulder 37.
  • the screw 36 and the shoulder 37 form together a rotation stop that defines the lower end position of the carrier 17 on the rod 16. If the motor 20 now begins to rotate the rod 15 in the direction indicated by the arrow 38, the nut 30 will tend to rotate the rod 16 in the opposite direction because of the friction in the threads but the stop 36,37 will prevent such rotation and, instead of rotating, the nut 30 will 3 move upwards on the rod 15 and bring the housing 14 with it since it is mounted in the housing. Thus, the intermediate part 12 will extend towards its position in figure 2.
  • Figure 5 illustrates a position in which the housing 14 is almost in its uppermost position.
  • the carrier 17 is shown in its uppermost position on the rod 16.
  • the upper portion of the rod 15 has a slot 41 in which a catching plate 42 is pivotably mounted on a horizontal screw 43 and protrudes radially out of the slot.
  • the rear end of the catcher 42 carries a projecting spring 44.
  • the nut 30 has an axial projection 45 that has one straight edge and one bevelled edge.
  • the nut continues to rise and the rotation of the rod 15 stops when the head of the screw 43 engages with the bevelled surface of the projection 45. This stop position is the same position as is shown in figure 6. The head of the screw 43 cannot be seen in figure 5 since it is at the back of the rod 15.
  • the straight side of the projection 45 on the nut 30 will engage with the catcher 42 so that the nut 30 will rotate with the rod 15 and also rotate the rod 16 in the opposite direction indicated by the arrow 47.
  • the rotation of the rod 16 makes the carrier 17 rise on the rod 16.
  • the carrier 17 has an axial projection 50 and the rod 16 has a screw 51 with a head so that the projection 50 and screw 51 form a rotation stop for the rod 16 and this rotation stop defines the upper limit for the axial movement of the carrier 17 on the rod 16.
  • the screw 51 is shown just when it is about to reach the projection or shoulder 50.
  • the upper end of the rod has a head of plastic 52 that is slidably guided in the upper part 13.
  • the telescopic support pillar is now in its fully extended position shown in figure 3.
  • the motor rotation is again reversed so that it again rotates the rod 15 as indicated by the arrow 55 in figure 6.
  • the projecting head of the screw 43 will again engage with the bevelled edge of the projection 45 and make the nut 30 co-rotate with the rod 15.
  • the nut 30 will then rotate the rod 16 in the opposite direction, that is, in the direction indicated by the arrow 56 so that the carrier 17 begins to move downwards on the rod 16.
  • the 4 carrier 17 has a hole 57 that is coaxial with the guiding tube 18 and has the same diameter as the interior diameter of the guiding tube. There is a gap 58 between the carrier 17 and the guiding tube 18.
  • the catcher 42 is down because of its own weight and its spring 44 projects obliquely upwards and projects longer than the radius of the head 59.
  • the carrier 17 now moves downwards with its bore 57 passing the head 59, the carrier will force the obliquely upwards directed spring 44 downwards so that the spring instead will be directed obliquely downwards and lift the catcher 42 just before the carrier reaches its lowest end position on the rod 16 as is schematically illustrated in figure 8.
  • a spring 60 on the underside of the carrier 17 can be used as shown in figure 8 which shows the underside of the carrier 17.
  • the spring force is now sufficient to prevent rotation of the rod 16 and the nut 30, and the carrier 17 is thereby prevented from moving upwards and ensures that the housing 14 instead moves downwards on the rod 15.
  • a power-actuated hook can be used that positively hhinders the rod 16 from rotating. The housing 14 will thus move downward on the rod 15 so that the support pillar will be fully retracted again.
  • the spring 44 of the catcher 42 will remain downward directed so that it holds the catcher lifted.
  • the catcher 42 When the intermediate part 12 of the pillar is then extended again, the catcher 42 will be lifted until its spring 44 is released from the tube 18 and enters the space 58 between the guiding tube 18 and the carrier 17 so that the catcher 42 falls down by its own weight and is maintained in its position by the spring 44 which remains in the hole 57 of the carrier 17 as shown schematically on figure 9.
  • the space 58 between the tube 18 and the carrier 17 is thus important since it makes the catcher return to its catching position so that it can function as already described with reference to figure 5. 5
  • a telescoping device is provided which is controlled solely by the repeated reversal of the motor rotation.
  • the telescoping device as illustrated is extensible in two steps. A three-step extension can be achieved if the carrier 17 is replaced by a housing of the same kind as the housing 14. It would be possible to add further steps too.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)

Abstract

la présente invention concerne un dispositif télescopique de type cric destiné à un véhicule transporteur tel qu'un fardier. Ce dispositif est constitué par une base tubulaire (11), un élément intermédiaire tubulaire (12) monté télescopiquement dans la base, et un élément supérieur (13)également monté télescopiquement dans l'élément intermédiaire. La base tubulaire (11) comporte une tige filetée (15) entraînée par un moteur (20). Lorsque la tige (15) tourne, un boîtier (14) dont le guidage est assuré par la base (11) et qui est muni d'un écrou (30) est entraîné vers le haut par la tige (15) jusqu'à ce que l'écrou se bloque dans le boîtier (14) et arrête le mouvement de rotation. Le boîtier (14) fait partie de l'élément intermédiaire (12) qu'il supporte. Lorsque l'élément intermédiaire (12) est sorti et que l'on inverse le sens de rotation du moteur, l'écrou (30) se met à tourner avec la tige (15) et fait lui-même tourner une seconde tige filetée (16) via un train de roues dentées (31,32). La tige (16) est supportée par le boîtier (14). En tournant, cette tige fait sortir l'élément extérieur (13) du cric. L'extension et le rappel du cric sont commandés en plusieurs temps et séquentiellement par inversion du sens de rotation du moteur.
PCT/SE1999/000558 1998-04-08 1999-04-06 Dispositif telescopique Ceased WO1999052739A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AU40658/99A AU4065899A (en) 1998-04-08 1999-04-06 A telescoping device
CA002327250A CA2327250A1 (fr) 1998-04-08 1999-04-06 Dispositif telescopique
NO20005029A NO20005029D0 (no) 1998-04-08 2000-10-06 Teleskopisk anordning

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9801281-8 1998-04-08
SE9801281A SE511898C2 (sv) 1998-04-08 1998-04-08 Teleskoperande anordning samt användning av en sådan anordning som sidostolpe på en lastbärande yta på ett lastfordon

Publications (1)

Publication Number Publication Date
WO1999052739A1 true WO1999052739A1 (fr) 1999-10-21

Family

ID=20410941

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1999/000558 Ceased WO1999052739A1 (fr) 1998-04-08 1999-04-06 Dispositif telescopique

Country Status (5)

Country Link
AU (1) AU4065899A (fr)
CA (1) CA2327250A1 (fr)
NO (1) NO20005029D0 (fr)
SE (1) SE511898C2 (fr)
WO (1) WO1999052739A1 (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001073340A1 (fr) * 2000-03-31 2001-10-04 Larsen Joergen Dispositif telescopique
EP1230872A1 (fr) * 2001-02-09 2002-08-14 Linak A/S Colonne de levage de préférence pour mobilier tel que tables et lits
US7185868B2 (en) * 2005-01-05 2007-03-06 Gemmy Industries Corporation Telescopic display stand
US9009886B2 (en) 2013-03-26 2015-04-21 Revac Aps Apparatus and method for assisting impaired or disabled persons
FR3012498A1 (fr) * 2013-10-25 2015-05-01 Alphi Etai telescopique motorise
US9254232B2 (en) 2013-03-26 2016-02-09 Revac Aps Apparatus and method for assisting impaired or disabled persons
US9295597B2 (en) 2013-03-26 2016-03-29 Revac Aps Apparatus and method for assisting impaired or disabled persons
CN108175902A (zh) * 2018-03-23 2018-06-19 无锡市人民医院 一种多功能内科护理用输液架
DE102017127937A1 (de) * 2017-11-27 2019-05-29 Logicdata Electronic & Software Entwicklungs Gmbh Teleskopierbarer Linearaktuator und höhenverstellbarer Tisch
CN113753109A (zh) * 2021-09-10 2021-12-07 徐州嘉搏纺织股份有限公司 一种纺织运输推车
WO2022165604A1 (fr) * 2021-02-08 2022-08-11 Fs Manufab Inc. Système et procédé de levage de structure

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4062156A (en) * 1976-01-30 1977-12-13 Dornier System Gmbh Extensible rod
US4793197A (en) * 1986-09-10 1988-12-27 Dornier Gmbh Telescoping device
WO1996007513A1 (fr) * 1994-09-07 1996-03-14 Commissariat A L'energie Atomique Systeme telescopique

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4062156A (en) * 1976-01-30 1977-12-13 Dornier System Gmbh Extensible rod
US4793197A (en) * 1986-09-10 1988-12-27 Dornier Gmbh Telescoping device
WO1996007513A1 (fr) * 1994-09-07 1996-03-14 Commissariat A L'energie Atomique Systeme telescopique

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001073340A1 (fr) * 2000-03-31 2001-10-04 Larsen Joergen Dispositif telescopique
EP1230872A1 (fr) * 2001-02-09 2002-08-14 Linak A/S Colonne de levage de préférence pour mobilier tel que tables et lits
US7185868B2 (en) * 2005-01-05 2007-03-06 Gemmy Industries Corporation Telescopic display stand
US9009886B2 (en) 2013-03-26 2015-04-21 Revac Aps Apparatus and method for assisting impaired or disabled persons
US9254232B2 (en) 2013-03-26 2016-02-09 Revac Aps Apparatus and method for assisting impaired or disabled persons
US9295597B2 (en) 2013-03-26 2016-03-29 Revac Aps Apparatus and method for assisting impaired or disabled persons
FR3012498A1 (fr) * 2013-10-25 2015-05-01 Alphi Etai telescopique motorise
DE102017127937A1 (de) * 2017-11-27 2019-05-29 Logicdata Electronic & Software Entwicklungs Gmbh Teleskopierbarer Linearaktuator und höhenverstellbarer Tisch
CN108175902A (zh) * 2018-03-23 2018-06-19 无锡市人民医院 一种多功能内科护理用输液架
WO2022165604A1 (fr) * 2021-02-08 2022-08-11 Fs Manufab Inc. Système et procédé de levage de structure
CN113753109A (zh) * 2021-09-10 2021-12-07 徐州嘉搏纺织股份有限公司 一种纺织运输推车

Also Published As

Publication number Publication date
SE9801281D0 (sv) 1998-04-08
SE9801281L (sv) 1999-10-09
CA2327250A1 (fr) 1999-10-21
NO20005029D0 (no) 2000-10-06
AU4065899A (en) 1999-11-01
SE511898C2 (sv) 1999-12-13

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