FR2545678A1 - GROWER EQUIPPED WITH EARTH WHEELS INCREASING ITS STABILITY - Google Patents

Abstract

THE INVENTION RELATES TO A CULTIVATOR EQUIPPED WITH EARTH WHEELS INCREASING ITS STABILITY. IN THE CULTIVATOR, A POWER TAKE-OFF SHAFT 13, CONNECTED TO A T TRANSMISSION MECHANISM, PROJECTS FROM THE LOWER ANTERIOR REGION OF A TRANSMISSION BOX 4. A GROUP U COMPRISING TWO EARTH WHEELS 25 IS REMOVABLE FIXED TO THE SAID REGION LOWER ANTERIOR OF THE TRANSMISSION BOX 4. THIS GROUP HOSTS A SOLIDARIZATION MECHANISM I WHICH CONNECTS ITS POWER TAKE-OFF SHAFT 13 TO SAID EARTH WHEELS 25. APPLICATION TO STABILIZED SELF-PROPELLED TOWERS.

Description

2545678

  GROWER EQUIPPED WITH GROUND WHEELS INCREASING SA

STABILITY

  The present invention relates to a cultivator

high performance.

  In general, a farmer is a well-known agricultural machine powered by an engine, which triturates and plows fields and fields, and prepares the soil for

  It is desirable that such a farmer

  It has a great adaptability and can be used for different purposes so that, for example, its mode of use can be easily modified (for example from rough plowing to fine plowing), depending on the properties. treated soil, purpose of use,

  The object of the present invention is to propose a

  tivator of a simple structure and especially designed such

  way it can be used at will as a cultivation

  driving on a rotary tiller, a group of the self-propelled type with rolling wheels, without modifying the mechanism

  main tillage of this tiller.

  To achieve this object, the invention proposes a cultivation

  motor-driven generator in which there is provided a transmission casing extending vertically from top to

  from an engine block, a motor cultivation mechanism

  rised, with teeth and the like, being propped on

  a drive shaft that runs horizontally and la-

  the lower region of said transmission housing housing a transmission mechanism which connects the output end of the motor to said drive shaft, said actuator being characterized by the fact that a PTO shaft connected to said transmission mechanism protrudes beyond the front face of the lower region of said transmission case; and in that a group, comprising two wheels or wheels "earth" assembled from

  and other of its frontal end, is attached detachable-

2 2545 '78

  to the lower front region of said transmission casing, this group of ground wheels enclosing a securing mechanism which interconnects said shaft

  PTO and said earth wheels.

  The invention also proposes a cultivator of the aforementioned type, in which, in order to increase its stability in order to facilitate plowing and to simplify the change of direction of displacement, the earth wheels are designed so that their point of contact with the ground is at the front of the extension of a line connecting the center of gravity of this farmer's body to the handles of his sleeves.

  The invention furthermore proposes a cultivator in the

  the axis of the earth wheels is at the front of an anterior guard installed at the front of the body of the said grower to protect that body from any

  obstacles in front of him, in order to allow a

  the forward direction of the cultivator when its direction of movement varies, so that when said cultivator is for example facing a mound of soil or a furrow, easy and gentle turning can have place without said farmer being embarrassed by such

  obstacle or deteriorate the latter.

  The invention further proposes the use of a reinforcing bar to establish the connection between the front end of the ground wheel group and an upper part of the cultivator body, in order to increase the robustness of the

  the latter to support said wheels.

  The invention will now be described in more detail by way of non-limiting examples, with reference to the appended drawings in which:

  FIG. 1 is a perspective view of a motorcycle.

  rotary actuator constituting an embodiment of the present invention; FIG. 2 is a fragmentary view on an enlarged scale with tearing away, illustrating the tiller of FIG. 1

  FIG. 3 is a perspective view of a cultivation

  in accordance with the present invention;

  FIG. 4 is a fragmentary view on an enlarged scale.

  die with tear, representing the grower of Figure 3; Figure 5 is a side elevation of an alternative embodiment of the rolling cultivator according to Figures 3 and 4; Figure 6 is a side elevation of another alternative embodiment of this rolling cultivator according to Figures 3 and 4; and Fig. 7 is a side elevation of the cultivator

  of Figure 6 shown tilted forward.

  In the drawings, showing an embodiment according to the invention and variants thereof, the identical elements are designated at one end.

  to each other by the same numerical references.

  In these drawings, Figures 1 and 2 show a

  rotary tiller according to one embodiment of the invention.

  vention, while Figures 3 and 4 illustrate a

  rolling controller resulting from an alternative embodiment.

  By first observing Figures 1 and 2, the body B of a tiller houses an engine block E and it is also provided with maneuvering sleeves 2 extending upwardly and rearwardly, each of which has a Handle 2a at its rear end Body B is also provided with a front protector 26 for protecting the engine block E from any obstacles in front of this block E, so that said protector 26 extends forward and bottom up to cover the anterior face of said block E.

  As shown in Figure 2, a transmission box

  4 is developed in one piece with a crankcase 3 of the engine block E from which it extends vertically from top to bottom; a substantially vertical transmission shaft 5 is rotatably supported in said casing 4 The casing 3 and the casing 4 constitute a transmission casing 6 in which is incorporated a transmission gear of a conventional type, a crankshaft 7 of the motor E being connected to the transmission shaft 5 by means of this gearing The lower end of the transmission shaft 5 is terminated by a small integral drive conical pinion 8 engaged with a large conical driven gear 10 which is wedged on a shaft 9 of the tiller traversing horizontally, with a rotary movement, a lower region of the transmission housing

  4 Teeth with side discs 12 are provided

  jetties at both ends of the shaft 9, outside the transmission housing 4 The transmission shaft 5

  is driven by the motor E thanks to the transmission gear

  mission and the rotation of this shaft 5 is transmitted to the shaft 9 of the tiller, by means of the small conical drive pinion 8 and the large conical pinion gear 10, to drive the teeth 11 Thus, the drive shaft , the small conical pinion 8 and the large conical pinion 10 constitute a transmission mechanism T.

  A PTO shaft 13, installed transversally

  The inner end of this PTO shaft 13 terminates with a small integral conical pinion 14, which is rotatably supported by an anterior wall 4a of the lower region of the transmission housing 4. The outer end of said shaft 13 protrudes beyond the transmission housing 4 and this protruding region of the shaft 13 is fluted. A hood 15

  is fixed removably by bolts 16 to the anterior face.

  bottom of the transmission housing 4, so that it traps the outer end of the shaft 13 of

PTO.

2545618

  In the tiller illustrated in Figures 1 and 2, when the motor E is in operation, the rotation of its crankshaft 7 is transmitted to the shaft 9 of said tiller through the transmission mechanism T, by rotating the teeth it and their associated side disks 12, to perform rotary tillage when said tiller moves This mechanism is

  ready for relatively coarse plowing.

  In FIGS. 3 and 4, the hood 15 of the tiller of FIGS. 1 and 2 has been deposited and the base end of a group U with rolling wheels is removably secured cantilevered by a bolt 17 to the front wall 4a of the lower region of the transmission housing 4, so as to surround the projecting end of the PTO shaft 13 A housing 18 of the U group comprises a hollow cylindrical region 18a and a gearbox 18b forming a single block with said cylindrical region 18a at its anterior end The upper opening of

  the gearbox 18b is closed by a cover 19.

  A rotary junction shaft 20, housed in the hollow cylindrical region 18a which it traverses the entire length, has an end provided with grooves all around

  its periphery and located opposite the corresponding end.

  13 of the PTO shaft 13 The adjacent ends of these shafts 13 and 20 are secured by

  grooving by means of a hollow connection 21 The other end

  The mating shaft 20 has a small integral drive bevel pinion 22 for engaging a large conical driven gear 23 which is keyed on an axis 24 rotatably supported by the gearbox 18b. it crosses from side to side laterally Two wheels or wheels "earth" 25 are mounted at both ends of the shaft 24 The rotation of the shaft 13

  PTO is transmitted to this axis 24 through

  intermediate of the coupling 21, the connecting shaft 20, the small conical drive gear 22 and the large conical bevel gear 23, so that said axis 24 rotates at a reduced speed and prints a corresponding rotation to the pair of wheels The coupling 21, the shaft 20 and the pinions 22, 23 constitute a securing mechanism I. In the embodiment illustrated in FIGS. 3 and 4, when the motor E is in action, the pair of teeth 11 is driven. in rotation together with the side disks 12 and a rotation is concomitantly printed in the pair

  Thus, this structure can trans-

  form the tiller of Figures 1 and 2 into a cultivator

  rolling which is self-propelled by the earth wheels 25.

  This rolling cultivator is suitable for precise or fine tillage, as its speed of movement

  is regulated by said wheels 25.

  As described above, the grower

  the present invention has a great ability to adapt to

  because it can be easily converted from

  rotary tiller to a rolling farmer, or reverse

  without any modification of its motorcycle mechanism.

  culture comprising the shaft 9 and the teeth 11, quite simply

  bearing or depositing a group with rolling wheels. In the rolling cultivator according to FIGS. 3 and 4, when the center of gravity of the body B (comprising the engine block E and the transmission case 6) is above a line connecting the point of contact of each wheel 25 with the ground and the handle 2 a corresponding, said body B of the cultivator is likely to tilt laterally, which disadvantageously increases the load imposed on the

  sleeves 2 and also decreases the stability of the grower.

  Figure 5 illustrates a modified embodiment of

  In this FIG. 5, the reference A designates the point of contact of the soil wheels 25 with the soil and the center of gravity of the body B of the farmer is indicated by the rolling farmer according to FIGS. 3 and 4, which makes it possible to overcome this difficulty. The wheels 25 are arranged so that their point A of contact with the ground is at the front of the extension of a line connecting the handles 2a and the center of gravity G of the body B of the cultivator,

  that is, said center of gravity G is located at

  below a line b connecting said handles 2 to said contact point A with the ground This arrangement can reduce the lateral tilting of the body B, which results in increased stability of the cultivator, as well as by a

plowing easy and fast.

  In this embodiment, each earth wheel 25 has a relatively large diameter to provide a better rolling characteristic, and the axis 24 of these wheels 25 is also rotatably supported by the front end of the housing 18 of the group U at a point offset upwards, which ensures a desired depth of plowing X, for example about

cm to 15 cm.

  FIGS. 6 and 7 show another alternative embodiment of the rolling cultivator according to FIGS.

  4 In this case, the U group with earth wheels is specifi-

  mounted on the body B of the cultivator in such a way that the axis 24 of said earth wheels 25 is located before the front end of the front protector 26 installed on the front of the engine block E A reinforcing bar 27 is also climb from one end to the other to ensure the connection between the anterior end of the

  box 18 of the U group and part of the transmission casing

  mission 6 forming an upper region of the body B of the grower. In this case, the front protector 26 is located, from

  preferably so as not to project out

  a tangent X connecting the engine block E and the wheels 25 In this variant, just as in the form

8 2545678

  embodiment of Figure 5, the axis 24 of the wheels 25 is rotatably supported by the front end of the casing

  18 at an offset point upwards.

  In addition, in accordance with this variant of

  When it is necessary to tilt the cultivator forward using the ground contact point of each wheel 25 as a fulcrum in order to change the direction of movement of said cultivator, it is possible to to tilt this cultivator further forward until the protector 26

  reaches a vertical tangent Y high from the ex-

  former end of said wheels 25, because the axis 24 is located before the front end of said front protector 26 Thus, for example, when, for example, an obstacle O such as a mound of soil is located just in front of the cultivator, l user can easily and

  quickly change the direction of movement of this cul-

  without the front protector 26 touching this obstacle O and, in this way, it is not to be feared that this protector 26 deteriorates said mound In addition, because the reinforcing bar 27 is interposed between the front end of the housing 18 and the transmission casing 6, the robustness ensuring the support of the earth wheels 25 is increased by the rigid structure consisting of the body B, said casing 18 and said bar 27, which ensures sufficient support rigidity, even in the case o the size of said boot

18 is longer.

  It goes without saying that many modifications can be made to the farmer described and represented without

depart from the scope of the invention.

Claims (4)

  1 Cultivator comprising a body, an engine block mounted on the body, a transmission box extending   up and down beyond the engine block, a shaft passing through   horizontally and laterally a lower region of said transmission casing and on which is wedged a culture mechanism with teeth, and a transmission mechanism housed in said transmission casing and for connecting the output end of said engine block to said engine block tree of the cultivator so that said mechanism   culture is driven by said engine block, cultivation   characterized in that a PTO shaft (13) connected to said transmission mechanism (T) protrudes beyond a lower front region of said transmission housing (4); and in that a group (U), having a pair of rolling wheels or ground wheels (25) rotatably mounted on either side of its front end, is removably attached to said lower front region of said housing transmission (4), said group (U) with earthwheels housing a securing mechanism (I) which connects said shaft (13)   force to said ground wheels (25).   2 cultivator according to claim 1, characterized in that its body (B) has sleeves (2) extending upwardly and rearwardly; and in that the ground wheels (25) are arranged such that their ground contact point (A) is at the front of the extension (a) of a line connecting handles (2a) said sleeves and the center of gravity (G) of said farmer's body.   Cultivator according to claim 1, characterized in that it comprises a front protector (26) which covers the front face of the motor unit (E); and in that the axis (24) of the ground wheels (25) is located before the front end of said protector before (26).   Cultivator according to one of claims 1, 2   and 3, characterized in that a reinforcing bar (27) provides the connection between the front end of a housing (18) housing the securing mechanism (I) of the group (U) with earth wheels, and a higher region of the body (B) of said cultivator.