FR2567089A1 - Improvements to manual trolleys on wheels - Google Patents
Improvements to manual trolleys on wheels Download PDFInfo
- Publication number
- FR2567089A1 FR2567089A1 FR8410748A FR8410748A FR2567089A1 FR 2567089 A1 FR2567089 A1 FR 2567089A1 FR 8410748 A FR8410748 A FR 8410748A FR 8410748 A FR8410748 A FR 8410748A FR 2567089 A1 FR2567089 A1 FR 2567089A1
- Authority
- FR
- France
- Prior art keywords
- wheels
- axle
- gravity
- trolley
- carriage
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B3/00—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor
Abstract
Description
PERFECTIONNEMENTS AUX CHARIOTS ANNUELS SUR ROUES.IMPROVEMENTS ON ANNUAL TROLLEYS ON WHEELS.
L'invention concerne un chariot manuel sur roues destiné à être utilisé dans des conditions difficiles nécessitant le passage d'obstacles (rails, sas, pas-de-porte, dénivellations, etc.), tout en ayant un poids éleve et un centre de gravité assez haut. C' est le cas en particulier des chariots utilisés pour la vente ambulante dans les trains. The invention relates to a manual trolley on wheels intended to be used in difficult conditions requiring the passage of obstacles (rails, airlock, door steps, unevenness, etc.), while having a high weight and a center of fairly high gravity. This is the case in particular of the trolleys used for itinerant sales on trains.
Du fait du poids élevé et de la position du centre de gravité, le passage d'obstacle est très difficile car il nécessite souvent de soulever l'avant du chariot pour lui permettre de passer l'obstacle. Due to the high weight and the position of the center of gravity, the obstacle passage is very difficult because it often requires lifting the front of the carriage to allow it to pass the obstacle.
La présente invention a pour but de pallier ces in convenients des chariots connus grâce à un nouveau chariot manuel sur roues de plus grande maniabilité, en particulier pour le passage d'obstacles. The present invention aims to overcome these in conveniences of known carts with a new manual cart on wheels with greater maneuverability, in particular for the passage of obstacles.
A cet effet, le chariot selon l'invention est caractérisé par le fait qu'il comprend un essieu avant qui, en utilisation normale, est en avant du centre de gravité et un essieu arrière en arrière du centre de gravité, et un essieu supplémentaire en avant de l'essieu avant et disposé de manière que les roues qu'il porte sont dans le vide lorsque le chariot roule sur les roues portées par les essieu avant et arrière. To this end, the trolley according to the invention is characterized in that it comprises a front axle which, in normal use, is in front of the center of gravity and a rear axle behind the center of gravity, and an additional axle in front of the front axle and arranged so that the wheels it carries are in a vacuum when the carriage rolls on the wheels carried by the front and rear axles.
L'invention sera bien comprise à la lecture de la description suivante faite en se référant au dessin annexé dans lequel
- la figure 1 est une vue schématique en élévation latérale d'un chariot selon un exemple de réalisation de l'invention, en utilisation normale;
- la figure 2 est analogue à la figure 1, le chariot étant en train de passer un obstacle, et
- la figure 3 est une vue schématique d'un exemple de réalisation d'une suspension.The invention will be clearly understood on reading the following description made with reference to the accompanying drawing in which
- Figure 1 is a schematic side elevational view of a carriage according to an exemplary embodiment of the invention, in normal use;
FIG. 2 is similar to FIG. 1, the carriage being in the process of passing an obstacle, and
- Figure 3 is a schematic view of an embodiment of a suspension.
Le chariot 1 selon l'invention comporte un essieu arrière à roues 2, un essieu avant à roues 3 qui sont, en position normale d'utilisation (figure 1), respectivement en arrière et en avant du centre de gravité G du chariot i. The carriage 1 according to the invention comprises a wheeled rear axle 2, a wheeled front axle 3 which are, in the normal position of use (FIG. 1), respectively behind and in front of the center of gravity G of the carriage i.
Conformément à l'invention, le chariot 1 comporte un essieu supplémentaire à roues 4 qui, en position normale d'utilisation (figure 1), sont dans le vide. Pour le passage d'un obstacle 5, une traction sur la poignée 6 du chariot 1 permet de le faire basculer autour de ses roues avant 3 en appui sur l'obstacle 5, le centre de gravité G passant à l'avant de l'essieu avant 3. Il suffit alors de continuer légèrement le pivotement en appui sur les roues 4 de l'essieu supplémentaire pour décoller les roues 3 et leur faire passer l'obstacle 5. According to the invention, the carriage 1 comprises an additional axle with wheels 4 which, in the normal position of use (Figure 1), are in a vacuum. For the passage of an obstacle 5, a pull on the handle 6 of the carriage 1 makes it tilt around its front wheels 3 bearing on the obstacle 5, the center of gravity G passing at the front of the front axle 3. It then suffices to slightly continue the pivoting bearing on the wheels 4 of the additional axle to take off the wheels 3 and make them pass the obstacle 5.
Avantageusement, les roues 3 ont un diamètre plus élevé que celui des roues -2 et 4, car l'obstacle pouvant être passé ne doit pas être supérieur au rayon des roues 3. Advantageously, the wheels 3 have a larger diameter than that of the wheels -2 and 4, because the obstacle which can be passed must not be greater than the radius of the wheels 3.
L'essieu avant portant les roues 3 est avantageusement suspendu, par exemple par le système représenté à la figure 3. The front axle carrying the wheels 3 is advantageously suspended, for example by the system shown in FIG. 3.
L'axe 3' des roues 3 est monté à une pointe d'un support 7 à section triangulaire dont une autre pointe est articulée sur un axe 8 solidaire du chariot, la troisième pointe étant fixée à une extrémité d'un ressort de traction 9 dont l'autre extrémité est fixée au chariot 1.The axis 3 ′ of the wheels 3 is mounted on a point of a support 7 of triangular section, another point of which is articulated on an axis 8 integral with the carriage, the third point being fixed to one end of a tension spring 9 the other end of which is fixed to the carriage 1.
De préférence, les roues arrière 2 sont pourvues d'un système commandé depuis la poignée 6 leur permettant d'occuper les trois états suivants: totalement libres, blocage en directïon, blocage total. Preferably, the rear wheels 2 are provided with a system controlled from the handle 6 allowing them to occupy the following three states: completely free, direct lock, total lock.
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8410748A FR2567089B3 (en) | 1984-07-06 | 1984-07-06 | IMPROVEMENTS ON MANUAL TROLLEYS ON WHEELS |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8410748A FR2567089B3 (en) | 1984-07-06 | 1984-07-06 | IMPROVEMENTS ON MANUAL TROLLEYS ON WHEELS |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2567089A1 true FR2567089A1 (en) | 1986-01-10 |
FR2567089B3 FR2567089B3 (en) | 1986-11-07 |
Family
ID=9305869
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8410748A Expired FR2567089B3 (en) | 1984-07-06 | 1984-07-06 | IMPROVEMENTS ON MANUAL TROLLEYS ON WHEELS |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2567089B3 (en) |
-
1984
- 1984-07-06 FR FR8410748A patent/FR2567089B3/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR2567089B3 (en) | 1986-11-07 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |