FR2639041A1 - Lifting appliance for an agricultural tractor - Google Patents

Lifting appliance for an agricultural tractor Download PDF

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Publication number
FR2639041A1
FR2639041A1 FR8814862A FR8814862A FR2639041A1 FR 2639041 A1 FR2639041 A1 FR 2639041A1 FR 8814862 A FR8814862 A FR 8814862A FR 8814862 A FR8814862 A FR 8814862A FR 2639041 A1 FR2639041 A1 FR 2639041A1
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France
Prior art keywords
tractor
lifting device
jack
ground
lifting
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Granted
Application number
FR8814862A
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French (fr)
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FR2639041B1 (en
Inventor
Michel Meurs
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DAMONT JEAN PAUL
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DAMONT JEAN PAUL
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Publication date
Application filed by DAMONT JEAN PAUL filed Critical DAMONT JEAN PAUL
Priority to FR8814862A priority Critical patent/FR2639041B1/en
Publication of FR2639041A1 publication Critical patent/FR2639041A1/en
Application granted granted Critical
Publication of FR2639041B1 publication Critical patent/FR2639041B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/24—Lifting frames, e.g. for lifting vehicles; Platform lifts for raising or lowering vehicles by their own power

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)

Abstract

Safety device which can be fitted onto a certain type of jack making it possible to raise the back of the agricultural tractor in the same way as the front if this tractor is provided with a compatible three-point hydraulic lifting system. Its object is to eliminate all the possible risks of accidents due to wedging, lifting, malfunction of a hydraulic circuits of the tractor such as sliding, skidding or digging into the ground, by means of a better distribution of the load. It consists of a set of safety accessories comprising: - a lever arm 7-7b-7c, a height-adjustable sleeve 6, a non-skid channel section 4, a double lateral reinforcement 5 which perfectly locks the jack; - a height-adjustable prop 1, two articulated clevises 2 and 3, a spacer 15, all of which shore up the tractor, give perfect stabilisation of the whole thing on the ground and prevent any hydraulic malfunction. It is particularly recommended in all mechanical or maintenance works requiring an increase in the tractor ground clearance without having to call upon heavy handling means.

Description

TITRE DE L'INVENTION : APPAKEIL DE LEVAGE DE SECURITE POUR
TRACTEUR AGRICOLE.TITLE OF THE INVENTION: SAFETY LIFTING APPARATUS FOR
TRACTOR.

La présente invention conceriie un dipositif de sécurité adaptable sur un certain type d'appareil de levage genre "cric" permettant d'intervenir sur l'arrière des tracteurs agricoles et également sur l'avant lorsqu'ils sont munis d'un système de relevage hydraulique compatible type trois points, sans risque d'accident pour l'utilisateur ni d'endosmagement du matériel à l'occasion du changement de roues ou de tout entretien nécessitant d'augmenter la garde au sol du tracteur. The present invention relates to a safety device adaptable to a certain type of lifting device of the "jack" type making it possible to operate on the rear of agricultural tractors and also on the front when they are fitted with a lifting system. compatible three-point hydraulic system, without risk of accident for the user or damage to the equipment when changing wheels or performing any maintenance requiring increased ground clearance of the tractor.

Traditionnellement, le changement de roues arrières du tracteur s'effectue une dizaine de fois l'an pour les exploitations ne possédant pas plusieurs engins. Opération délicate, difficile à mettre en oeuvre et toujours dangereuse
1) - pour réaliser ce travail, certains levent le tracteur à l'aide d'un cric ordinaire pour dégager la roue de ses gougeons ; technique de précision puisque la roue doit effleurer le sol.Traditionally, the rear wheels of the tractor are changed around ten times a year for farms that do not have several machines. Delicate operation, difficult to carry out and always dangerous
1) - to carry out this work, some lift the tractor using an ordinary jack to disengage the wheel from its studs; precision technique since the wheel must touch the ground.

2) - le poids de la roue 200 kg eii moyenne demande un effort physique important nécessitant une forte poussée. 2) - the weight of the wheel 200 kg eii average requires significant physical effort requiring a strong push.

3) - rien n'est prévu sur le tracteur pour maintenir le cric qui peut ripper, il faut ensuite caler le tracteur avec des bouts de bois de tous genres, de toutes épaisseurs sur un terrain plus ou moins stable, puisque les freins soit déssérés pour pourvoir tourner les roues. 3) - nothing is planned on the tractor to maintain the jack which can rip, it is then necessary to chock the tractor with pieces of wood of all kinds, of all thicknesses on a more or less stable ground, since the brakes are loose to turn the wheels.

D'autres mettent en oeuvre un équipement spécial adaptable 591 un des bras du relevage de Type 3 points, permettant d'agir à la manière d'un levier en se servant de la pression hydraulique du tracteur : Brevets n DE 1.117.958-
GB 1.275.552 - GB 2.138.372 A - FR 2.593.305 (invention datant de 30 ans dont l'application n'a que peu évoluée).Others use special adaptable equipment 591, one of the 3-point Type lifting arms, which acts like a lever using the hydraulic pressure of the tractor: Patents n DE 1.117.958-
GB 1.275.552 - GB 2.138.372 A - FR 2.593.305 (invention dating back 30 years, the application of which has changed little).

Si dans ce dernier cas, la fixation du cric est assurée sur le crochet d'attelage, le système de levage peut s'enfoncer dans un sol, ne stabilisé ou glisser. Une fois la roue retirée le tracteur reste en équilibre précaire. If in the latter case, the jack is secured to the towing hook, the lifting system may sink into the ground, not stabilized or slip. Once the wheel is removed the tractor remains in precarious equilibrium.

par ailleurs, une fuite d'huile du système hydraulique, une rupture de joint ou de flexible qui ferait basculer le tracteur est toujours à craindre....in addition, an oil leak from the hydraulic system, a seal or hose rupture that would tip the tractor is always to be feared ...

Le dispositif selon l'invention prend en considération l'important problème de la sécurité et pallie aux inconvénients recensés par le fait que:
-les bases du cric reposent sur deux chapes articulées, assurant une parfaite stabilité sans risque de déport ni de glissade et répartissant la charge.The device according to the invention takes into account the important problem of security and overcomes the drawbacks identified by the fact that:
-the bases of the jack rest on two articulated yokes, ensuring perfect stability without risk of offset or slipping and distributing the load.

-la flèche du triangle sur laquelle repose le bras de relevage est surmontée d'une gouttière interdisant tout ripage.  -the arrow of the triangle on which the lifting arm rests is surmounted by a gutter preventing any shifting.

- cette gouttière en forme de U est suffisamment haute pour servir d'appui au cric. - this U-shaped gutter is high enough to support the jack.

- à l'intérieur de la flèche coulisse un manchon permettant de régler la position en hauteur du cric. Pour ce faire le manchon et la flèche sont percés de lumières intercalables. - inside the boom slides a sleeve for adjusting the height position of the jack. To do this, the sleeve and the arrow are pierced with intercalable lights.

- les bases du cric réunies par le bras de levier, sont solidarisées entre elles par une entretoise. - the bases of the jack joined by the lever arm, are joined together by a spacer.

- la béquille de soutainement, étançonnant l'arriére du tracteur est réglable au centimètre près par des lumières intercalables. La béquille reposant sur une des chapes prévient tout déséquilibre ou affaissement qui seraient dûs à une défaillance du circuit hydraulique ou à un tassement de terrain. - the support stand, propping up the rear of the tractor is adjustable to the nearest centimeter by intercalable lights. The stand resting on one of the yokes prevents any imbalance or sagging that would be due to a failure of the hydraulic circuit or to a compaction of the ground.

- un double renfort latéral fixe le cric au crochet d'attelage et le maintien par goupille et clip. - a double lateral reinforcement fixes the jack to the towing hook and the support by pin and clip.

L'invention pourra de toute façon être comprise à l'aide des dessins ci après annexés et du complément de description qui suit.The invention can in any case be understood with the aid of the attached drawings and the additional description which follows.

Ces derniers sont tous deux relatifs à un mode de réalisation préféré de l'invention et ne comportent bien entendu aucun caractère limitatif.The latter both relate to a preferred embodiment of the invention and of course have no limiting character.

- la figure 1 représente le dispositif en élévation
- la figure 2 représente le dispositif en fonctionnement.- Figure 1 shows the device in elevation
- Figure 2 shows the device in operation.

Tel qu'il est représenté, le dispositif comprend
- une béquille (1 ) pourvue de trous permettant un réglage en hau teur par goupille ( 12 ) et clip (13 ), le buttoir ( 14 ) faisant également office de poignée.As shown, the device includes
- a stand (1) provided with holes allowing height adjustment by pin (12) and clip (13), the stopper (14) also acting as a handle.

- deux chapes articulées (2 et 3 ) assurant la stabilisation au sol
- une gouttière(4 ) anti-ripage supportant le bras de relevage.- two articulated screeds (2 and 3) ensuring ground stabilization
- an anti-slip gutter (4) supporting the lifting arm.

- un double renfort latéral (5 ) fixant le cric au crochet (16 ) d'attelage du bras de relevage (17 ) par goupille (8 ) et de clip (9 ). - a double lateral reinforcement (5) fixing the jack to the hook (16) for coupling the lifting arm (17) by pin (8) and clip (9).

- un manchon coulissant (6 ), soutient le bras de relevage (17 ), réglable en hauteur par fenêtres au moyen de goupille (10 ) et clip (11 ). - a sliding sleeve (6), supports the lifting arm (17), adjustable in height by windows by means of pin (10) and clip (11).

- un bras de levier (7 s'appuyant sur le sol et reposant sur une des chapes articulées. - a lever arm (7 resting on the ground and resting on one of the articulated yokes.

- une entretoise ( 15 ) solidarise les bases du bras de levier ( 7 - 7 b- 7c ).  - a spacer (15) secures the bases of the lever arm (7 - 7 b- 7c).

La pression hydraulique exercée par le vérin double effet (18 ) du bras de relevage ( 17 ) du tracteur sur la base de la chape (2 ) par l'intermédiaire de la section de levier (7 - 7 b - 7 c ) modifie la garde au sol du tracteur et permet de le lever sans risque d'accident.  The hydraulic pressure exerted by the double-acting cylinder (18) of the lifting arm (17) of the tractor on the base of the yoke (2) via the lever section (7 - 7 b - 7 c) modifies the ground clearance of the tractor and allows it to be lifted without risk of accident.

Claims (8)

REVENDICATIONS 1 - Appareil de levage type cric servant à lever les roues carrières et avants de tracteur agricole caractérisé par un ensemble de dispositifs de sécurité, bras de levier, chapes, gouttière, manchon, béquille, renfort latéral, entretoise, assurant le maintien et le parfait calage même en cas de rupture ou de fuite des circuits hydrauliques de ce dernier ou d'affaissement de terrain. 1 - Jack type lifting device used to lift the quarry and front wheels of an agricultural tractor characterized by a set of safety devices, lever arms, yokes, gutter, sleeve, crutch, lateral reinforcement, spacer, ensuring the maintenance and the perfect stalling even in the event of rupture or leakage of the latter's hydraulic circuits or subsidence. 2 - Appareil de levage selon revendication N-1, caractérisé par un bras de levier (7 - 7 b - 7 c ) s'appuyant sur deux chapes articulées ( 2 et 3) ) reposant sur le sol, solidarisé par une entretoise ( 15 J.  2 - Lifting device according to claim N-1, characterized by a lever arm (7 - 7 b - 7 c) resting on two articulated yokes (2 and 3)) resting on the ground, secured by a spacer (15 J. 3 - Appareil de levage selon revendications précédentes caractérisé par deux chapes articulées (2 et 3 ) assurant une double assise du cric sur une surface telle que la répartition de la charge évite tout enfoncement dans le sol. 3 - Lifting device according to the preceding claims characterized by two articulated yokes (2 and 3) ensuring a double seat of the jack on a surface such that the distribution of the load prevents any sinking into the ground. 4 - Appareil de levage selon revendication N-1 caractérisé par une béquille (l ) réglable au centimètre par des lumières intercalables et étançonnant l'arrière du tracteur. 4 - Lifting device according to claim N-1 characterized by a stand (l) adjustable to the centimeter by intercalable lights and propping up the rear of the tractor. 5 - Appareil de levage selon revendication Nul caractérisé par une gouttière (4 ) en forme de U suffisamment haute pour interdire tout ripage du bras de relevage servant d'appui au cric. 5 - Lifting device according to void claim characterized by a gutter (4) U-shaped sufficiently high to prevent any shifting of the lifting arm serving as support for the jack. 6 - Appareil de levage selon revendication Nl caractérisé par un double renfort latéral (o ) solidarisant le cric au crochet d'attelage par fixation-cie goupille et de clip. 6 - Lifting device according to claim Nl characterized by a double lateral reinforcement (o) securing the jack to the coupling hook by fixing pin and clip. 7 - Appareil de levage selon revendications N' 1 et 2 caractérisé par un manchon coulissant ( 6 ) réglable en hauteur par lumières intercalables et arrêt par goupille clipsée, qui soutient le bras de relevage du tracteur. 7 - Lifting device according to claims N '1 and 2 characterized by a sliding sleeve (6) adjustable in height by intercalable lights and stop by clipped pin, which supports the lifting arm of the tractor. 8 - Appareil de levage selon revendications N0 1 et N 2 caractérisX par une entretoise qui solidarise les bases du bras de levier ( 7 - 7 b- 7 c  8 - Lifting device according to claims N0 1 and N 2 characterized by a spacer which secures the bases of the lever arm (7 - 7 b- 7 c
FR8814862A 1988-11-14 1988-11-14 LIFTING APPARATUS FOR AGRICULTURAL TRACTOR Expired - Fee Related FR2639041B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8814862A FR2639041B1 (en) 1988-11-14 1988-11-14 LIFTING APPARATUS FOR AGRICULTURAL TRACTOR

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8814862A FR2639041B1 (en) 1988-11-14 1988-11-14 LIFTING APPARATUS FOR AGRICULTURAL TRACTOR

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Publication Number Publication Date
FR2639041A1 true FR2639041A1 (en) 1990-05-18
FR2639041B1 FR2639041B1 (en) 1991-08-23

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6478945B1 (en) 1998-12-17 2002-11-12 Nippon Light Metal Co., Ltd. Method for producing highly pure aluminum primary base metal
FR3008065A1 (en) * 2013-07-04 2015-01-09 Diffumag Pieces DISASSEMBLY DEVICE FOR AGRICULTURAL TRACTOR OR SIMILAR VEHICLE
CN112299335A (en) * 2020-10-29 2021-02-02 辽宁忠旺机械设备制造有限公司 Lifting safety lock structure for upper cover of degassing box

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1037294B (en) * 1956-12-01 1958-08-21 Xaver Fendt & Co Maschinen U S Jacking device for vehicles with hydraulic equipment, especially agricultural machinery
FR1270480A (en) * 1960-10-20 1961-08-25 John Deere Lanz Ag Crutch for agricultural motor vehicles
DE1177958B (en) * 1959-08-20 1964-09-10 Johann Haider Jun Jacking device for tractor with two handlebars that can be lifted by a power lift
FR2389521A1 (en) * 1977-05-06 1978-12-01 Bregoli Carlo Support for use when changing tractor wheel - consists of telescopic leg with adjustable top bracket engageable on lift arm or front axle
FR2595305A1 (en) * 1986-03-07 1987-09-11 Otico Sa Device for raising at least one rear tractor wheel

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1037294B (en) * 1956-12-01 1958-08-21 Xaver Fendt & Co Maschinen U S Jacking device for vehicles with hydraulic equipment, especially agricultural machinery
DE1177958B (en) * 1959-08-20 1964-09-10 Johann Haider Jun Jacking device for tractor with two handlebars that can be lifted by a power lift
FR1270480A (en) * 1960-10-20 1961-08-25 John Deere Lanz Ag Crutch for agricultural motor vehicles
FR2389521A1 (en) * 1977-05-06 1978-12-01 Bregoli Carlo Support for use when changing tractor wheel - consists of telescopic leg with adjustable top bracket engageable on lift arm or front axle
FR2595305A1 (en) * 1986-03-07 1987-09-11 Otico Sa Device for raising at least one rear tractor wheel

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6478945B1 (en) 1998-12-17 2002-11-12 Nippon Light Metal Co., Ltd. Method for producing highly pure aluminum primary base metal
FR3008065A1 (en) * 2013-07-04 2015-01-09 Diffumag Pieces DISASSEMBLY DEVICE FOR AGRICULTURAL TRACTOR OR SIMILAR VEHICLE
CN112299335A (en) * 2020-10-29 2021-02-02 辽宁忠旺机械设备制造有限公司 Lifting safety lock structure for upper cover of degassing box

Also Published As

Publication number Publication date
FR2639041B1 (en) 1991-08-23

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