FR2524916A1 - GROUNDING TOOL AND METHOD OF PROTECTING IT FROM ABNORMALLY HIGH LOADS RESULTING FROM SUCH WORK - Google Patents

Abstract

EARTHWORKING TOOL AND METHOD FOR PROTECTING IT FROM ABNORMALLY HIGH LOADS RESULTING FROM SUCH WORK. BASE AND BLOCK SET, USED WITH A 10 EARTHING FLOWER, WHICH INCLUDES A BASE 2 AND A BLOCK 4 COOPERATING WITH THE BASE. THE ASSEMBLY INCLUDES MEANS 28 SO THAT THIS IS THE BLOCK 4 WHICH BREAKS UP WHEN IT IS SUBJECT TO ABNORMAL EFFORTS. THE INVENTION ALSO DESCRIBES A PROCESS FOR PROTECTING THE BASE OF SUCH ASSEMBLY IN USE; THE BLOCK IS PREFERENTIALLY WEAKENED SO THAT IT BREAKS FIRST WHEN IT IS SUBJECT TO ABNORMAL EFFORTS AND THE BLOCK IS THEN INSERTED INTO THE BASE.

Description

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  man, dilatation plates or plaque plates.

  on the decks, an abnormally high workload will be exerted on the foil, and the base itself may be torn off the rotor In this case also, the machine must be stopped and a welder sent on the spot

like before.

  A remedy for this situation is to realize the basis

  and the block massive enough so that together they can

  This is the case, for example, of US Pat. No. 3,749,449. However, a very heavy rotor results from the fact that this base and this block "are muscular so that the force available for the

  size by the foil is somewhat reduced

  of, such an achievement would also be more expensive.

  The present invention proposes an alternative solution to

  These problems are thus an aim of the invention of

  find a base and block assembly that is both lightweight and durable, at an acceptable cost price, or replaceable

  while being rigidly maintained by the base in use

  and be protected from abnormally high The present invention writes an assembly used in connection with an earthwork foil It comprises a base and a block cooperating with the base The block comprises a portion f Mt and a tool holder part This part starts from a first end of the fit and is arranged to receive an earthwork foil I 1 is also provided

  means for it to be the block that breaks preferentially

  when he is subjected to charges of anorum

high.

  The base has a T-shaped cavity formed by

  the intersection of a vertical slot and a horizontal slot

  The block has a T-shaped part which is

  The T-shaped portion cooperates in sliding with the T-shaped cavity. The rupture means are provided on the barrel part.

  and, preferably, on the latter between the

  The tool and the T-shaped part. Preferably also, the breaking means comprise a segment of this barrel portion in which the cross-section is reduced.

  compared to the rest of this part.

  the reduced cross section has a groove on at least one peripheral surface of

the part was.

  The base also has an upper part

  The surface of the upper part is inclined to the horizontal. The block also has a lower part with two surfaces which converge towards the outside of the first end of the drum part. Each surface of the

  lower part is inclined to the horizontal.

  faces of the upper part of the base are directly vis-à-vis the surfaces of the lower part of the block, when it cooperates with the base preferably the angle that each surface of the upper part of the base makes with the horizontal is about 10 degrees, as

  the angle that each surface of the inferior part

  top of the block made with the horizontal.

  Preferably, the surfaces of the horizontal slot

  and the surfaces of the upper part of the base diver-

  from each other towards the back of the base.

  The surfaces of the T-shaped part and the surfaces

  the lower part of the block diverge

  from each other towards the back of the block.

  The base and the block are stacked one inside the other of the fact

  this divergence when moving the block to the

in the base.

  In addition, the base and block assembly includes

  preferably means for retaining the block in the base.

  Preferably, the retaining means * are fastening means, a tapped hole at the rear of the barrel and a bore at the rear of the T-shaped cavity. The bore and the tapped hole are aligned when the block cooperates. with the base The fastening means pass through the bore

  and cooperate with the tapped hole.

  The invention describes a block intended for hearth used with an earthwork foil It comprises a part

  fit and a tool-holder part starting from a first

  mite of the ft and arranged to receive the foil of terras-

  Means are also provided for the block to break preferably when subjected to

  at abnormally high size loads.

  Preferably, the block also has a portion

  T-shape starting from a second end of the door

barrel.

  Also preferably, the breaking means are provided on the barrel part and, preferably, on the latter between the loss-tool part and the T-shaped part. The breaking means comprise a segment of this part ft in which the cross-section is reduced relative to the remainder of this barrel portion. Preferably, the reduced cross-sectional segment has a groove on at least one peripheral surface of the

part ft.

  The block also has a bottom portion having soft intersecting directional surfaces extending outwardly from the first end of the portion of the portion of each portion of the bottom portion.

  on the horizontal Preferably, the angle that each

  The bottom face of the horizontal part is about 10 degrees. Preferably, the surfaces of the t-shaped part and the inner part diverge.

  one from the other one goes towards the back of the block.

  The invention also proposes a method for protecting the base of a base and block assembly when it is used with an earthwork foil. The method consists in preferentially weakening the block so that it

  breaks when subjected to significant efforts of abnormal

  The preferred attenuation is achieved by reducing the cross-sectional area of a

  part of the block Preferably, the reduction of the

  face of the cross-section is obtained by forming a

  groove on at least one peripheral surface of the block.

  The invention will be better understood on reading the

  detailed description, given below as an example

  only, a preferred embodiment, with reference to the drawing Joint on which s Figure 1 is a perspective view of a set

base and block on a rotor.

  La and La block and La La block The La La In Fig 2 is with foil figure 3 is with foil figure 4 is figure 5 is figure 6 is figure 7 is figure 8 is referring a front view of a base set

earthworks.

  a side view of a base set

earthworks.

a side view of the block.

a front view of the block.

a view of the back of the block.

a front view of the base; and

a side view of the base.

  more detail in the drawing, Figure 1 shows the base 2 and the block 4 as they would normally appear on the rotor 6 Horn we see, the base is

welded on 8 on the rotor.

  Figures 2 and 3 show the base 2 and the block 1 with an earthwork foil 10 The foil shown

  is a rotating foil with a prison-retaining element

  However, it can be any of several types well known in the prior art. The section of the base in FIG.

block and fastening means.

  Referring now further to Figures 4-18, it is seen according to the invention a set for use with an earthwork foil This set comprises a base 2 and a block 4 cooperating with the base.

  The block has a barrel portion 12 and a bearing portion

  14 from a first end 16 of the barrel and arranged to receive an earthmoving blade 10 It is also provided means for this to be the block

  which breaks preferably when subjected to ef-

  abnormally high height.

  The base has a T-shaped cavity 18 formed by the intersection of a vertical slot 20 and a horizontal slot 22. The block comprises a portion forming a T shape.

  24 from a second end 26 of the barrel portion.

  The T-shaped part slidably enters the body.

  T-shaped medium. Preferably, the breaking means are arranged

  on the barrel portion. Preferably, the means for rupturing

  They can also be arranged on the drum portion between the tool-holder portion and the barrel portion. They consist of a segment of the barrel portion in which the cross-section has been reduced relative to the remainder of the barrel. reduced cross section has a groove 28 located on at least the long

  of a peripheral surface of the drum.

  To reach the limits of the invention, it is necessary to

  that the throat is located along at least one

  peripheral face; however, within the scope of the invention, the case where this groove is located on two,

  three or all the peripheral surfaces of the barrel part.

  The invention also envisages similar implementations

  for example any thinning of the transpor-

versale of the frt.

  The upper part of the base can also

7 2524916

  have two surfaces 30 of concurrent direction Cha-

  surface of the upper part is inclined to the

  The lower portion of the block may also have two surfaces 34 of concurrent direction extending outwardly from the first end 16 of the portion f t Each surface of the lower portion is inclined

  on the horizontal 36 The surfaces 30 of the upper part

  the base are directly opposite the surfaces of the

  these 34 of the inner part of the block when this one

this is with the base.

  This is best seen in FIG. 2, in which the surfaces of the upper part are opposite the bottom surfaces of the lower part of the surface.

  the upper part is intended to oppose the efforts of the

  teres exerting on the earthwork foil.

  It is desirable that the angle 40 that each of the surfaces of the upper part of the base and the angle 40 that each of the surfaces of the lower part of the block

  do with the horizontal are about 10 degrees.

  Preferably, the horizontal font 22 diverges to

  the rear 42 of the base of the surfaces 30 of the upper part of the

  Likewise, the T-shaped portion 24 diverges rearwardly from the block of surfaces 34 of the lower portion of the block. The base and the block become wedged due to this divergence when the block is moved.

backwards in the base.

  Moreover, the invention provides means for retaining the block in the base. It is desirable to retain the stationary block and the base relative to one another.

  to avoid unnecessary wear between these two components.

  Preferably, the retaining means comprise fixing means, a tapped hole 48 at the rear 44 of the ft and a bore 50 at the rear 42 of the T-shaped cavity 18 The bore 50 and the tapped hole 48 are aligned

  when the block cooperates with the base.

  through the bore 50 and cooperate with the hole

Tapped 48.

  The fastening means are preferably constituted by a bolt 46 and a locking washer 47, as shown in FIG. 3. However, the invention also proposes similar fixing means, for example

a bolt and a spring.

  The invention describes a block 4 intended to be used with an earthwork foil 10 It comprises a barrel portion 12 and a tool holder portion 14 extending from a first end 16 of the ffit and arranged to receive an earthwork foil 10 are also provided so that it is the block that breaks preferably when

  is subject to unusually large efforts.

  The block also has a T-shaped portion 24

  from a second end 26 of the Mt.

  Also preferably, the breaking means are

  provided on the fit part and, preferably, on that

  ci between the tool holder part and the T-shaped part. The breaking means consist of a segment of this part fit in which the cross section is reduced in relation to the rest of the fit part.

  preferred, the segment of reduced cross-section

  has a groove 28 located on at least one periph-

this part f Mt.

  Although we have particularly represented and de-

  a throat, the invention contemplates any similar means for reducing the cross-sectional area

of the barrel part.

  The block has a lower portion having two surfaces 34 of direction competing towards

  outside the first end 16 of the barrel portion.

  Each surface of the lower part is inclined on Ilherisontale 36 This inclination of the surfaces has for

2.524916

  purpose of opposing the lateral forces exerted on the earthwork foil Preferably, the angle 40 that

  each surface of the lower part does with the horizon-

tale is about 10 degrees.

  Also preferably, the block has a T-shaped portion 24, which diverges rearwardly 44 of the

  block of the surfaces 34 of the lower part.

  The invention also proposes a method for protecting the base of a base and block assembly when it is used with an earthwork foil. The method consists in preferentially weakening the block so that it

  breaks when subjected to significant efforts of abnormal

  maliciously high, and to engage the block in the base.

  This is expected to be the block that breaks first when subjected to unusually high stresses, or at least that it becomes deformed and unusable, thus pocketing the base

to be torn off the rotor.

  Preferably, the preferential impairment is achieved

  By reducing the cross-sectional area of a portion of the block Preferably, the reduction of this area is achieved by forming a groove 28 on at least one peripheral surface of the block.

  particularly shown and describes a throat as

  preferred embodiment of such a weakening

  ferential, similar achievements resulting in a

  duction of the cross-sectional area of the block

  also belong to the field of the invention.

Claims (17)

  1 Assembly, intended to be used with an earthmoving foil (10), of the type constituted by a base (2), a block (4) cooperating with this base and having a drum part (12) and a tool-holder part ( 14) leaving   a first end (16) of the drum and arranged to receive   see a foil earthmoving (10), characterized in that it comprises means for it to be the block which breaks preferentially when subjected to   abnormally high size efforts.   An assembly according to claim 1, wherein the base (2) has a T-shaped cavity (18) formed by the intersection of a vertical slot (20) and a horizontal slot (22) and the block ( 4) has a T-shaped portion (24) extending from a second end (26) of the barrel portion (12), said T-shaped portion (24).   penetrating by sliding in the T-shaped cavity (18).   3 The assembly of claim 2, wherein the breaking means are provided on the barrel portion (12) between the tool holder portion (14) and the shaped portion. T (24).   The assembly of claim 1, wherein the   breaking means are provided on the barrel portion (12).   Assembly according to claims 3 or 4, in   which the breaking means are constituted by a segment   of the barrel portion in which the cross-sectional area is reduced relative to the remainder of the barrel portion. The assembly of claim 5, wherein   the segment with reduced cross-section   ge (28) located on at least one peripheral surface of the part was.   7 The assembly of claim 3, wherein the base (2) has an upper portion having two surfaces (30) of concurrent directions, each of these 2524916 surfaces (30) being inclined to the horizontal (32), and the block (4) has an inner portion having two surfaces (36) of concurrent directions extending outwardly from the first end (16) of the barrel portion (12), each of which surfaces (34) is inclined to   the horizontal (36), the surfaces (30) of the upper part   of the base being directly in front of the over-   faces (34) of the lower part of the block when this block is introduced into the base.   The assembly of claim 7, wherein   the angle that each of the surfaces (30) of the upper part   of the base and that each of the surfaces (34) of the lower part of the block about ten degrees.   An assembly according to claim 7, wherein the surfaces of the horizontal slot (22) and the top of the base are divergent towards the rear (42) of the base, and the surfaces of the shaped portion T (24) and the lower part of the block are likewise diverging towards the rear (44) of the block, the base (2) and the block (4) being wedged due to this divergence when the block is moved rearward in the base.   An assembly according to claim 1, wherein   there are provided means for retaining the block in the base.   An assembly according to claim 10, wherein the retaining means comprises fastening means, a tapped hole (48) at the rear (44) of the barrel (12) and a bore (50) at the rear (42). do the T-shaped cavity   - (18), the bore (50) and the tapped hole (48) being   when the block cooperates with the base, the fastening means passing through the bore and co-operating with the threaded hole.   Block for use with an earthmoving foil (10), characterized in that it comprises 12 2524916   a barrel portion (12), a tool holder portion (14) extending   a first end (16) of the barrel and arranged to re-   to see an earthwork foil (10), and ways to   that it is the block which breaks preferentially when   that it is subjected to abnormally high efforts of size. The block of claim 12, wherein a T-shaped portion (24) extends from a second end (26) of the barrel part.   Block according to Claim 13, in which the breaking means are provided in the barrel portion (12) between the tool holder portion (14) and this shaped portion. T (24).   Block according to claim 12, wherein the   breaking means are provided on the barrel part.   Block according to claims 14 or 15, in which   the breaking means consist of a segment of the   part in which the surface of the transverse section   dirty is reduced compared to the rest of the party f Mt.   The block of claim 16, wherein the reduced cross-section includes a groove (28) on at least one peripheral surface of the barrel part.   Block according to Claim 14, in which a lower part has two surfaces (36) of directiens   competing outward from the first extreme   mité (16) of the barrel portion (12), each of these surfaces   (34) being inclined to the horizontal (36).   Block according to claim 18, wherein the   that each of the surfaces (34) of the lower   done with the horizontal is about ten degrees.   Block according to claim 18, wherein the surfaces of the T-shaped portion (24) and the lower portion are divergent towards the rear (44) of the block.   Method for protecting the base (2) from a base and block assembly when it is used with an earth-moving foil (10), characterized in that it consists in preferentially weakening the block (4) so that it It does not break when it is subjected to abnormally high efforts of size and to engage the block in the base. The method of claim 21, wherein the preferential attenuation is achieved by reducing the   cross-sectional area of a part of the block.   The method of claim 22, wherein the   reduction in cross-sectional area is achieved   holds by forming a groove (28) on at least one surface block device.