FR2768422A1 - SUPPORT STRUCTURE FOR WHEEL-MOUNTED VEHICLE - Google Patents

Abstract

The invention relates to a support structure, and relates to a support structure which has at least two support parts offset in the transverse direction of the vehicle, the first part being a support sleeve carried by a pin (6) forming a pivot and connected to the vehicle frame (2) and the second part being an extension part movable in a bearing formed in the first support part which is the support sleeve. The support having the two parts can be pivoted between a parking position in which the two parts are inclined towards the side of the vehicle which is furthest from the pivot pin (6), and at least one operating position which has an inclination Opposite Application to timber and container transport vehicles.

Description

The present invention relates to a support structure for

  wheel-mounted vehicles, of the type having at least two support parts which are offset from each other in the transverse direction of the vehicle and the first part of which is a support sleeve which is supported by a pivoting spindle connected to the vehicle chassis and the second part is an extension part arranged so that it is movable in the first support part, that is to say the sleeve

support.

  This type of support can usually pivot between a storage position and a working position and is mounted in a bearing having a pivot pin which, in the direction transverse to the vehicle, is relatively close to the outer limit of the vehicle wheels so that the

  support can pivot freely relative to the vehicle.

  The space in the transverse direction of the vehicle which is available for the storage position of the support corresponds as much as possible to the external transverse dimension of the vehicle. So that this width of the vehicle can be used to the maximum, the support could previously be tilted downwards on the side where the bearing is also in the storage position so that the support sleeve can be a little longer than in the case the support is placed horizontally in the storage position. However, in this inclined position, it is difficult to use the support for transferring a force to a plane which is on the side of the vehicle, at a level close to the load surface of the vehicle, and an auxiliary apparatus.

is necessary.

  The subject of the invention is the production of a support structure whose production and production costs are low and which allows the use of the support both for vertical support near the outside of the vehicle wheels, especially in narrow spaces, that is to say when the vehicle is placed on the side concerned in the vicinity of an obstacle which can be for example another vehicle, a loading bridge or another device placed at height, and for a remote support of the vehicle both on the ground or on another loading surface placed

side of the vehicle.

  This object is achieved by a support structure such that the support, that is to say the two support parts, can pivot between a storage position in which they are inclined downwards on the side of the vehicle which is the further from the spindle of the pivot of the support structure, and an operating position having the opposite inclination. By making maximum use of the width of the vehicle, for example by cutting the ends of the support sleeve at an angle so that the ends are placed vertically in the storage position,

  obtains, compared to known structures, an increase

  tation of the distance between the support points of the extension part placed in the support sleeve so that the force applied to the extension part is reduced and it is possible to produce the support with smaller dimensions in section or advance the extension portion of the support sleeve further than has previously been possible. The reverse tilt of the

  support in storage position, in relation to constructions

  known, is such that the entire support system

  port, when it pivots towards the operating position,

  effectively moves laterally with respect to the vehicle

  cule, so that the support structure has a greater span. Other characteristics and advantages of the invention

  will be better understood on reading the description which will

  follow exemplary embodiments, made with reference to the accompanying drawings in which: Figure 1 is a schematic view of a transport vehicle having a support structure according to the invention which is in the storage position, that is to say - say transport on the vehicle, Figure 2 is a rear view of the vehicle shown in Figure 1 with a goods transport vehicle placed on the side and against which the support structure is in abutment for the transfer of 'a load between vehicles, Figure 3 is a corresponding view of the rear of the goods transport vehicle when the support is supported on the ground at a certain distance from the vehicle, Figure 4 is a corresponding view of rear of the same vehicle in which the support structure is supported on the ground in the immediate vicinity of the vehicle wheels, FIG. 5 is a schematic longitudinal section of the sleeve part and the extension part management of

  support structure in parking position, i.e.

  say in the rest position, and Figure 6 is a corresponding schematic longitudinal section of the same parts as in Figure 4,

operating position.

  In FIGS. 1 to 4, a vehicle having a device according to the invention is generally designated by the reference 1. The chassis of the vehicle bears the reference 2, and

  reference 3 designates a frame with wheels usually connected

  strung to the vehicle chassis by a spring suspension.

  A platform arranged on the vehicle is marked with the reference 4. In addition, various crane loading and unloading systems can be mounted on the vehicle. These systems, which are well known in the art, can be side loading cranes for handling

  containers, for lifting trunks or the like. However

  As the support structure applies independently,

  These systems are not described in this brief. A support structure according to the invention bears the reference 5 and, in this embodiment, it is represented in the form of a pivotally connected to the platform of the vehicle or to the chassis thereof by a pin 6 forming a pivot. The support structure comprises two parts which are telescopically movable with respect to each other, that is to say an external sleeve part 7 and an extension part 8 which is guided so that it is mobile the interior. A bracket 9 or a pivot arm rigidly connected to the sleeve part connects the support to the pin 6 forming a pivot. A lifting cylinder bears the reference 10 and is placed between the side of the vehicle chassis opposite the spindle 6 and the bracket 9. The fixing of the jack 10 to the chassis bears the reference 11 and its fixing to the bracket 9 carries the reference 12. The two fixing points have pins constituting pivots. In the rest or parking position shown in FIG. 1, the support is inclined at an angle a on the side opposite the side of the vehicle where the pin 6 is located. In the embodiment shown, the pin 6 is close to the outer limit 13 of the vehicle but it can be placed further inside, possibly very close to the lateral members placed in the center in the chassis of the vehicle. It is also possible that the pin 6 is placed near the center of the vehicle, between such lateral members or side members. Given the inclination direction chosen according to the invention for the support, the spindle 6 is at a relatively large distance A from the center 14 of the support, this distance being further increased when the spindle is placed lower relative to the chassis of the vehicle . In the embodiment shown, the support bracket 9 is an elbow-shaped element, one branch of which is fixed to the end of the support sleeve to the left of the drawing and the other branch of which is suspended from the

  chassis of the vehicle by pin 6. In this embodiment

  sation, a first end of the lifting cylinder is connected to the bracket in the part by which the two arms meet. It is obviously also possible to connect the jack directly to the support sleeve, for example by lugs forming pivots or the like which protrude downwards. However, the lifting cylinder must have a direction such that there is a lever arm B between the center 15 of the cylinder and the spindle 6. In the embodiment shown, the support sleeve is further cut at an angle at its ends so that the two end sides 16, 17 are placed vertically near the external limits 13 of the vehicle. Thus, the space inside the width of the vehicle is used to the maximum for the support structure. Other advantages of these end edges cut obliquely in the support structure are described below. The movement of the extension part 8 relative to the support sleeve 7 is carried out for example by a lifting cylinder which is preferably a hydraulic cylinder placed inside the support sleeve and the extension part. The hydraulic cylinder placed inside the support and the lifting cylinder 10 are suitably controlled by a pump.

  hydraulically placed in the center of the vehicle through the

  medium of a hydraulic circuit suitable for control valve. This control distributor circuit can be placed both in the driver's cabin and near the vehicle platform. The control circuit controller can be placed both in the driver's cab of the vehicle and near the platform, it can be of the wireless type and it can be

  also connected to the vehicle by a cable system. The dis-

  tance A measured perpendicularly between the spindle 6 and the central axis 14 of the support is greater than the distance C between the pivot pin and the external limit of the vehicle as shown more clearly on the

figure 4.

  For example, when recharging must be carried out between the vehicle concerned and a loading surface 17 on the side, the support pivots upwards under the control of the lifting cylinder 10 as indicated in FIG. 2, and part 8 of extension advances so that the base 18 of the support comes firmly into contact with the loading surface 17 which is on the side of the vehicle and which can for example be the platform of another vehicle as indicated in FIG. 2. When a raised loading surface is not available next to the vehicle, the support can be lowered obliquely to the ground 19 as indicated in FIG. 3, at a certain distance from the

  vehicle. As clearly shown in Figure 2, the extreme

  external part 7a of the support sleeve has moved a certain distance outside the external limit 13 of the vehicle and, in the position shown in FIG. 3,

  this end 7a has moved a considerable distance

  maple outside the outer limit 13 of the vehicle, so that, taking into account the portion of extension part 8 which protrudes from the support sleeve, a very large distance D can be obtained between the point of abutment of the part 8 extension against the ground and the outer limit 13 of the vehicle. As shown in Figure 4, when an obstacle 20 is present next to the vehicle, the support can pivot down to a very

  close to the vehicle in a vertical direction.

  Figure 6 schematically shows the two parts which are movable relative to each other, that is to say the support sleeve 7 and the part 8 of extension in position corresponding approximately to the position

  shown in Figure 3, while Figure 5 shows

  feels a position which corresponds approximately to the parking position shown in Figure 1. In Figure 5, the two parts practically coincide while, in Figure 6, the extension part 8 protrudes from the sleeve 7. Figure 6 clearly shows how the points

  for supporting the part 8 are arranged in the sleeve 7.

  In the case of a reaction force F1 applied by the ground, an upward force F2 acts on the support sleeve at point 21 and a downward force F3 acts on the support sleeve at point 22. The distance L between the points 21 and 22, determined in the longitudinal direction of the support, is thus considerably lengthened compared to the case where the support is cut perpendicularly or even inclined in the opposite direction, as in the case of an opposite inclination of the support. This means that the force applied to the support sleeve and the extension part is

  minimal; this advantage is all the greater as the incli-

  The reason for the support in the parking position is great.

  A greater inclination not only gives greater possibilities of increasing the distance between the spindle 6 and the center 14 of the support, but also increases the lateral displacement of the sleeve 7 during the passage to the

support working position.

  The invention is not limited by the embodiment which has been described only by way of example as shown in the drawings and the details of which can be modified. First, the invention is in no way intended to be used only with side-loading container transport vehicles, but it is obvious that it is also possible to apply the invention to other wheeled vehicles, for example common crane vehicles in which the load is lifted by a lifting device which can pivot away from the vehicle. It is therefore possible to apply the invention both to vehicles for transporting heavy goods and to vehicles for transporting wood and the like. It is also possible to apply the invention to lifting cranes mounted on wheels, to vehicles having working platforms carrying a crane, to ladder vehicles or the like. The invention is not limited to the production of the bracket placed between the support sleeve and the pin forming a pivot. In addition, the position of the pin 6 can be changed both horizontally and vertically, still within the scope of the invention. The diagonally cut ends of the extension part and the support sleeve form a solution

  which does not limit the invention. Although the incli-

  naison indicated gives this possibility of cutting obliquely the end parts and thus increasing the distance between the contact points of the extension part and the support sleeve, a considerable advantage is obtained on the span of the structure of

  support even in the absence of the ends cut at an angle.

  Of course, various modifications can be made by those skilled in the art to the structures which have just been described solely by way of nonlimiting example.

  without departing from the scope of the invention.

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  According to the present invention, preferably the support sleeve 7 has a dimension

  longitudinal such that, in the parking position of the support, it corresponds practically to the width of the vehicle 1.

  In addition, it will advantageously be provided that the pin 6 forming a pivot is placed in the low position in the chassis.

  of the vehicle at least below the surface 23 of the platform 4 of the vehicle and possibly at the level of the chassis 2 of the vehicle.

  Preferably, the arm 9 has a curvature such that it protrudes from the upper face of the wheels of the vehicle in

  the support position and the support arm 9 has a length and a shape such that the support can pivot freely to a vertical position outside the wheels of the vehicle.

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Claims (8)

  1. Support structure intended for vehicles mounted on wheels, of the type which comprises at least two support parts which are offset from one another in the transverse direction of the vehicle and the first part of which is a sleeve support (7) carried by a pin (6) forming a pivot and connected to the chassis of the vehicle (2) and the second part is an extension part (8) which is arranged so that it is movable in a bearing formed in the first support part which is the support sleeve, characterized in that the support having the two parts (7, 8) can pivot between a parking position in which the two parts are inclined downwards on the side of the vehicle which is the farther from the spindle (6) forming a pivot of the support structure, and at least one operating position which has an opposite inclination. 2. Support structure according to claim 1, characterized in that the support sleeve (7) has a longitudinal dimension such that, in the parking position of the support, it corresponds practically to the width of the vehicle (1).   3. Support structure according to one of   claims 1 and 2, characterized in that the   ends (16, 17) of the support sleeve (7) are cut so that they are arranged vertically in the   stand parking position.   4. Support structure according to any one of   Claims 1 to 3, characterized in that the spindle (6)   forming a pivot is placed in the low position in the chassis of the vehicle, at least below the surface (23) of the platform (4) of the vehicle and possibly at the level of the chassis (2) of the vehicle.   5. Structure according to any one of   previous claims, characterized in that the   pin (6) forming a pivot is placed near the center of the vehicle chassis.   6. Support structure according to any one of   previous claims, characterized in that the man-   support (7) is connected to the pin (6) forming 2768422   pivot by a bracket (9) which is rigidly connected to the support sleeve (7) and which forms a support arm which is also in cooperation with a lifting cylinder (10) placed from the support arm to the side of the vehicle opposite to that which comprises the pin (6) forming a pivot, this jack   being used as a drive device for pivoting the support (7, 8).   7. Support structure according to claim 6, characterized in that the arm (9) has such a curvature   that it protrudes from the upper face of the vehicle wheels in the support position.   8. Support structure according to claim 6, characterized in that the support arm (9) has a   length and shape such that the support can pivot freely to a vertical position outside the wheels of the vehicle.