CA1187830A - Bucket for vertical elevator - Google Patents
Bucket for vertical elevatorInfo
- Publication number
- CA1187830A CA1187830A CA000401153A CA401153A CA1187830A CA 1187830 A CA1187830 A CA 1187830A CA 000401153 A CA000401153 A CA 000401153A CA 401153 A CA401153 A CA 401153A CA 1187830 A CA1187830 A CA 1187830A
- Authority
- CA
- Canada
- Prior art keywords
- bucket
- angle
- straight line
- face
- forming
- 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.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G17/00—Conveyors having an endless traction element, e.g. a chain, transmitting movement to a continuous or substantially-continuous load-carrying surface or to a series of individual load-carriers; Endless-chain conveyors in which the chains form the load-carrying surface
- B65G17/30—Details; Auxiliary devices
- B65G17/32—Individual load-carriers
- B65G17/36—Individual load-carriers having concave surfaces, e.g. buckets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G2201/00—Indexing codes relating to handling devices, e.g. conveyors, characterised by the type of product or load being conveyed or handled
- B65G2201/04—Bulk
Landscapes
- Mechanical Engineering (AREA)
- Engineering & Computer Science (AREA)
- Types And Forms Of Lifts (AREA)
- Chain Conveyers (AREA)
- Cage And Drive Apparatuses For Elevators (AREA)
- Food-Manufacturing Devices (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
- Indicating And Signalling Devices For Elevators (AREA)
- Centrifugal Separators (AREA)
- Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
- Stackable Containers (AREA)
- Control And Other Processes For Unpacking Of Materials (AREA)
- Polyesters Or Polycarbonates (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
- Elevator Control (AREA)
Abstract
IN THE CANADIAN PATENT AND TRADEMARK OFFICE
PATENT APPLICATION
entitled : Bucket for vertical elevator.
Inventor : Jean TRIPOTEAU
Applicant : Société à responsabilité limitée styled :
SETEM : Société d'Etudes de Technique de Manutention.
ABSTRACT OF THE DISCLOSURE
The invention relates to a bucket for vertical elevator comprising a back wall designed to be attached to the endless driving member of the elevator, a front face, forming the base of the bucket by joining up with the back face, and two side faces.
The bucket seen in profile, the face forming the bottom of the bucket has a portion constituted by a circular arc centered on a straight line forming an angle of 15 to 25° with the back face and of angular length at least equal to 50°, of which 25° at the most are situated between the said straight line and the said back face, and 25° at least are situated on the other side of said straight line.
The invention finds a useful application for handling materials.
PATENT APPLICATION
entitled : Bucket for vertical elevator.
Inventor : Jean TRIPOTEAU
Applicant : Société à responsabilité limitée styled :
SETEM : Société d'Etudes de Technique de Manutention.
ABSTRACT OF THE DISCLOSURE
The invention relates to a bucket for vertical elevator comprising a back wall designed to be attached to the endless driving member of the elevator, a front face, forming the base of the bucket by joining up with the back face, and two side faces.
The bucket seen in profile, the face forming the bottom of the bucket has a portion constituted by a circular arc centered on a straight line forming an angle of 15 to 25° with the back face and of angular length at least equal to 50°, of which 25° at the most are situated between the said straight line and the said back face, and 25° at least are situated on the other side of said straight line.
The invention finds a useful application for handling materials.
Description
The present invention relate~ to a h~llttling bucket for vertical elevator.
It is kno~rl that the efficiency of a bucket elevator rclies on a great nwnber of factorssuch as the number of` l~lcke-ts per metre of eleva-tor, the speed of the elevator and mainly the shape of the buclcet.
It is also knol~n tha-t it is not possible to multiply the number of buckets per metre beyond a certain limit 9 because, for a given sectional plan of the aperture of the bucket, said latter becomes too shallow and does no-t fill properly. Finally, it is kno~ that it is not enough to scale up or down the dimension of a bucket to obtain a varietyO The buckets indeed behave different-ly depending on their size and their efficiency is affected or at least altered as a result.
The present invention is the result of lengthy researches in the desisn, especially of -the sec-tion of the bucket, in an attempt to control the dimensional parameters of a bucket permitting to combine a large n~lmber of buckets per metre of elevator with an adequate filling of each bucket, and this over a ~ide range of speeds, and varying quite ordinarily in relation to the dimension~ required for the bucke-t, without affecting the efficiency of the elevator. The shape of the buckets according to the invention consti*utes an optimum conferring on the elevators equipped ~ith such buckets a much hi~her degree of efficiency than the conventional elevators haveO
It iS -therefore the object of the invention 3~ to provide a bucket for vertical elevator ~hich omprises a back wall designed to be a-ttached to the cndless driving member of the elevator, a front face, forming -the base of the bucket by joining up with the back face, and t~o side face~ According to the in-~5 vention, the bucket being seen in profile, the face ~ c 3~
forrning the bottoin of tlle bucket has a portionconstituted by a circular arc centered on a straight line ~orming an angle of 15 to 25 with the back face and of angular length at least equal to 50, Or wh:ich 5 25r~ at the most are situated be-tween the said straight line and the said back face, and 25 at least are situated on the other side of said straigh-t line.
In addition, the aperture plane of the bucket being inclined with respectto -the b~ck wall to form an angle of` between 75 and 80, the distance separating two straight lines parallel to said opening and pass:ing through the outerrnost points of the said circular por-tion, correspond to about five sixths of the depth of the bucket. Advantageously, the said circular portion is extended by a substantially straight upper portion, inclined by about lOD with respect to the line of projection of the upper end of said circular portion on the opening plane and outwardly from -the bucket.
Also, the lower end of the said circular ~ portion is either joined to -the rear wall over a small joining radius or joined to the rear wall by a lower portion substantially straight, parallel to the apert~e plane, ending in-to a small joining radius to the rear wall, ~5 ~le of the advantages of the present invention resides in a simple method of determining the shape of a bucket and in particular determining the section of -the bucket bo-ttom~ which method consists in tracing -two parallel straight lines~ the distance between them being the five sixths of the said depth forming a given angle ~Yith a straight line of reference, parallel to the back wall ol` the bucket, in tracing a secant of these parallel lines inclined so as -to form a ~iven angle with the said reference line, and in passing an arc of circle througll the intersecting point of tlle mid-3~
perpendicular of the segmen-t o~ secanl, in-ternal to the p~raLlel~, with -the said parallels, said arc of circle ~laving a cen-ter angle Or 50 and being centered on the said secant.
The inverltion ~ill be more readily under-stood on reading the following description with reference to the accompanying dra~Yings, in ~hich :
- Figure 1 is a diagram sho~ing the sections of a bucket according to the invention;
- Figl~e 2 illustrates different sectiolls of the bucket as a f~ction of the capacity.
Referring to these t~o figures, these show t,he tracing 1 of the back plane wall of the bucket. Said bucket is attached by said wall to the endless movable mel~ber ~not sho-~, but which can be one or two chains, a belt or the like) by means of bol-ts or any other similar connecting devices. The front wall 2 formirlg the bottom of the buclcet by joining up with the back wall 1 has a circular ~ection of which the center 0 is situated on a straight line 3 which forms an angle A with the direction of the back wall 1~ Said angle can be be-t~een 15 and 25 and wlll be preferably aro~d 20. The angular leng-th Or said circular section is at least equal to 50 and in most small-size buckets will not exceed 50 ~ Said angle is constituted by the s~un of angles A and B (which in -the case illustrated in the~fi,sures are equal), the angle B being at the ~ mos-t e~u~l to 25 and, in practice bet~een 22 and 25, angle C being at least equal to 25 and in practice able to reach 40 for large-sized buckets.
It is kno~n to incline the aperture plane 4 o~ the bucket ~ith respect to the horizontal~ Said inclination is de~ined by angle ~ l~hich said plane 4 forms ~ith the back~oe~l 1 o~ the bucke-t. For example, for the bucket illustrated by ~ay of example, said 3~
angle D is between 75 and 800 so that, when -the back face of said bucket is :in -the vertical pOsitioll, the inclination of plane ~ ~ith respect -to the hori~ontal i9 between 10 and 15, this corresponcling substantially to the angle formed by the natural talus of -the trans-ported material.
As defined hereinabove, the circul~r section
It is kno~rl that the efficiency of a bucket elevator rclies on a great nwnber of factorssuch as the number of` l~lcke-ts per metre of eleva-tor, the speed of the elevator and mainly the shape of the buclcet.
It is also knol~n tha-t it is not possible to multiply the number of buckets per metre beyond a certain limit 9 because, for a given sectional plan of the aperture of the bucket, said latter becomes too shallow and does no-t fill properly. Finally, it is kno~ that it is not enough to scale up or down the dimension of a bucket to obtain a varietyO The buckets indeed behave different-ly depending on their size and their efficiency is affected or at least altered as a result.
The present invention is the result of lengthy researches in the desisn, especially of -the sec-tion of the bucket, in an attempt to control the dimensional parameters of a bucket permitting to combine a large n~lmber of buckets per metre of elevator with an adequate filling of each bucket, and this over a ~ide range of speeds, and varying quite ordinarily in relation to the dimension~ required for the bucke-t, without affecting the efficiency of the elevator. The shape of the buckets according to the invention consti*utes an optimum conferring on the elevators equipped ~ith such buckets a much hi~her degree of efficiency than the conventional elevators haveO
It iS -therefore the object of the invention 3~ to provide a bucket for vertical elevator ~hich omprises a back wall designed to be a-ttached to the cndless driving member of the elevator, a front face, forming -the base of the bucket by joining up with the back face, and t~o side face~ According to the in-~5 vention, the bucket being seen in profile, the face ~ c 3~
forrning the bottoin of tlle bucket has a portionconstituted by a circular arc centered on a straight line ~orming an angle of 15 to 25 with the back face and of angular length at least equal to 50, Or wh:ich 5 25r~ at the most are situated be-tween the said straight line and the said back face, and 25 at least are situated on the other side of said straigh-t line.
In addition, the aperture plane of the bucket being inclined with respectto -the b~ck wall to form an angle of` between 75 and 80, the distance separating two straight lines parallel to said opening and pass:ing through the outerrnost points of the said circular por-tion, correspond to about five sixths of the depth of the bucket. Advantageously, the said circular portion is extended by a substantially straight upper portion, inclined by about lOD with respect to the line of projection of the upper end of said circular portion on the opening plane and outwardly from -the bucket.
Also, the lower end of the said circular ~ portion is either joined to -the rear wall over a small joining radius or joined to the rear wall by a lower portion substantially straight, parallel to the apert~e plane, ending in-to a small joining radius to the rear wall, ~5 ~le of the advantages of the present invention resides in a simple method of determining the shape of a bucket and in particular determining the section of -the bucket bo-ttom~ which method consists in tracing -two parallel straight lines~ the distance between them being the five sixths of the said depth forming a given angle ~Yith a straight line of reference, parallel to the back wall ol` the bucket, in tracing a secant of these parallel lines inclined so as -to form a ~iven angle with the said reference line, and in passing an arc of circle througll the intersecting point of tlle mid-3~
perpendicular of the segmen-t o~ secanl, in-ternal to the p~raLlel~, with -the said parallels, said arc of circle ~laving a cen-ter angle Or 50 and being centered on the said secant.
The inverltion ~ill be more readily under-stood on reading the following description with reference to the accompanying dra~Yings, in ~hich :
- Figure 1 is a diagram sho~ing the sections of a bucket according to the invention;
- Figl~e 2 illustrates different sectiolls of the bucket as a f~ction of the capacity.
Referring to these t~o figures, these show t,he tracing 1 of the back plane wall of the bucket. Said bucket is attached by said wall to the endless movable mel~ber ~not sho-~, but which can be one or two chains, a belt or the like) by means of bol-ts or any other similar connecting devices. The front wall 2 formirlg the bottom of the buclcet by joining up with the back wall 1 has a circular ~ection of which the center 0 is situated on a straight line 3 which forms an angle A with the direction of the back wall 1~ Said angle can be be-t~een 15 and 25 and wlll be preferably aro~d 20. The angular leng-th Or said circular section is at least equal to 50 and in most small-size buckets will not exceed 50 ~ Said angle is constituted by the s~un of angles A and B (which in -the case illustrated in the~fi,sures are equal), the angle B being at the ~ mos-t e~u~l to 25 and, in practice bet~een 22 and 25, angle C being at least equal to 25 and in practice able to reach 40 for large-sized buckets.
It is kno~n to incline the aperture plane 4 o~ the bucket ~ith respect to the horizontal~ Said inclination is de~ined by angle ~ l~hich said plane 4 forms ~ith the back~oe~l 1 o~ the bucke-t. For example, for the bucket illustrated by ~ay of example, said 3~
angle D is between 75 and 800 so that, when -the back face of said bucket is :in -the vertical pOsitioll, the inclination of plane ~ ~ith respect -to the hori~ontal i9 between 10 and 15, this corresponcling substantially to the angle formed by the natural talus of -the trans-ported material.
As defined hereinabove, the circul~r section
2 is limited by two poin-ts 5 and 6. The distance a which separates the two straight lines 7 and 8, parallel togecher and -to the direction o~ -the opening plane 4, shollld correspond subs-tan-tially to five six-ths of the depth of the bucket~ Point 6 constituting the bottorn of the bucket (i~e~ the lowest point when the back face 1 is vertical) said five sixths are the lo~qer five sixths of the total depth. The last sixth b of said depth being defined by an upper port:ion 9 of tlle front face of the bucket which extends the circular portion. Said portion 9 is of substantially linear section. Its direction is such that it forllls an angle E of abo~lt 10 with the orthogonal line of orthographic parallel projection 10 of the point 5 on the aperture plane 4, situated outwardly from the aper-ture of the buclcet~ It will be noted that -the j~u~ction of this portion ~ with the portion 2 is mad~
under an obtuse angle G which will not be greater than 180. (Said angle G is taken betwean the portion 9 and ~the tangent at point 5 of the portion 2).
Finally~ Figu~e 1 shows that the portion 2 joins up, beyond -the point 6, with the baok face 1 by moans of a portion of small radius 11~ said radius being determined by the d~pth of the bucket a + b when the latter is obtained by stamping. The side walls of the buoket are no-t sho~ in the drawing, but they oan be plane, either completely so ~rom the opaning1 or ha~e an upper part of co~figuration .,
under an obtuse angle G which will not be greater than 180. (Said angle G is taken betwean the portion 9 and ~the tangent at point 5 of the portion 2).
Finally~ Figu~e 1 shows that the portion 2 joins up, beyond -the point 6, with the baok face 1 by moans of a portion of small radius 11~ said radius being determined by the d~pth of the bucket a + b when the latter is obtained by stamping. The side walls of the buoket are no-t sho~ in the drawing, but they oan be plane, either completely so ~rom the opaning1 or ha~e an upper part of co~figuration .,
3~
similar to that of said por-tion 9 with respect to the aper~ure p:Lane, said side walls b~ing preferAbly conv~rgen-t to the botto~n of the buclcet.
The bucket accor~ing to the invention i~
-thUs perfec-tly defined. One of its firs-t advantages resides in -the simplicity of its profile ~hich makes it easy to produce, by stamping for exarnple. The shape o~ its front face and of its bottom part defined by the portions 9 and 2 helps it to fill up properly when it penetrates into the ]oose material at the foot of -the ele~ator, and adequately holds back said material when this is about to be unloaded at the top of the elevator. It has indeecl been found that the bucke-t according to the invention works, when filling, like a cuttin~ tool, the product being "cu-t through"
by the edge 9, and "slidin~ over" the part 2 ~ithout brealcing up, like a continuous block~ This deslgn prevents the material from rebo~lding on the bottom of ~h~ bucket and from interfering with the fi.llln~r up ~
~ and in particular it eliminates any vibrations wh:ich could be senerated by the impact of the material in the bucket. As a result, theelevator assembly is more stable, and wear and tear are reduceclO When unloading~ the bucket moving orer the wheel at the top of the elevator, the sald portion 9 constitutes a hold-ing back element for the material, by impeding its tendency to escape from the bucket too soon. The ~ height and angle of ~aid portion are to this effect important parameters and the valuss attributecl to them above are an optimum compromise to ensurs both tllis holding back function and the funrtion of penetration into the loose material at the foot of the elevatoru A major result of -the shape of the bucket accorcling to the invention such as illustrated, is a ~5 method to ~etermine the optintum profile of a bucket, 37~
des:igned in pdrticular to equ:ip.an installation of given char~cteristics~
One of these characteristics resides in the delivery rate required f~om the elevator, and ~hich, for a given speed, is determined by the projection of the opening o-f the buckets on a horizontal plane and the nw~ber of buckets to be fixed over a uni-tary length of the elevator. It is thereforè obvious that said delivery rate determines right away the depth of the bucket. Frontthis ract alone, the invention ena~les to determine rapidly the optimum buckat to meet the requ:irement.
Indeed, it suffices, knowing a ~ b and there-fore kno~ing a and b, to trace the ~wo straight lines 7 and 8 which form a known angle D with the vertical. Then the straight line 3 is dra~n to form the angle A with the verticalO Said straight line 3 is secant of the straight lines 7 and 8 which determine thereon a segment of which the mid-perpendicular is takenO Said Z mid-perpendicular cuts through each one of straight lines 7 and 8 in points 5 and 6~ It suffices then to draw the arc of.circle passing through the points 5 and 6 of c.entral angle 50~ and centered on ths stra~sht line 3, in order to obtain the portion 2 which will be extended, on the one hand, by the portion 11 and on the other hand by the portion 9. By drawing the vertical
similar to that of said por-tion 9 with respect to the aper~ure p:Lane, said side walls b~ing preferAbly conv~rgen-t to the botto~n of the buclcet.
The bucket accor~ing to the invention i~
-thUs perfec-tly defined. One of its firs-t advantages resides in -the simplicity of its profile ~hich makes it easy to produce, by stamping for exarnple. The shape o~ its front face and of its bottom part defined by the portions 9 and 2 helps it to fill up properly when it penetrates into the ]oose material at the foot of -the ele~ator, and adequately holds back said material when this is about to be unloaded at the top of the elevator. It has indeecl been found that the bucke-t according to the invention works, when filling, like a cuttin~ tool, the product being "cu-t through"
by the edge 9, and "slidin~ over" the part 2 ~ithout brealcing up, like a continuous block~ This deslgn prevents the material from rebo~lding on the bottom of ~h~ bucket and from interfering with the fi.llln~r up ~
~ and in particular it eliminates any vibrations wh:ich could be senerated by the impact of the material in the bucket. As a result, theelevator assembly is more stable, and wear and tear are reduceclO When unloading~ the bucket moving orer the wheel at the top of the elevator, the sald portion 9 constitutes a hold-ing back element for the material, by impeding its tendency to escape from the bucket too soon. The ~ height and angle of ~aid portion are to this effect important parameters and the valuss attributecl to them above are an optimum compromise to ensurs both tllis holding back function and the funrtion of penetration into the loose material at the foot of the elevatoru A major result of -the shape of the bucket accorcling to the invention such as illustrated, is a ~5 method to ~etermine the optintum profile of a bucket, 37~
des:igned in pdrticular to equ:ip.an installation of given char~cteristics~
One of these characteristics resides in the delivery rate required f~om the elevator, and ~hich, for a given speed, is determined by the projection of the opening o-f the buckets on a horizontal plane and the nw~ber of buckets to be fixed over a uni-tary length of the elevator. It is thereforè obvious that said delivery rate determines right away the depth of the bucket. Frontthis ract alone, the invention ena~les to determine rapidly the optimum buckat to meet the requ:irement.
Indeed, it suffices, knowing a ~ b and there-fore kno~ing a and b, to trace the ~wo straight lines 7 and 8 which form a known angle D with the vertical. Then the straight line 3 is dra~n to form the angle A with the verticalO Said straight line 3 is secant of the straight lines 7 and 8 which determine thereon a segment of which the mid-perpendicular is takenO Said Z mid-perpendicular cuts through each one of straight lines 7 and 8 in points 5 and 6~ It suffices then to draw the arc of.circle passing through the points 5 and 6 of c.entral angle 50~ and centered on ths stra~sht line 3, in order to obtain the portion 2 which will be extended, on the one hand, by the portion 11 and on the other hand by the portion 9. By drawing the vertical
4 longer and tracing the plane 4, the section of the bucket ~ill be defined.
This first drawing can then be adapted so as to adjust axactly the capacity of the bucket to the required capacity as sho~n in Figure 2~ Said ~igure 2 shows the same elemen-ts as described with reference to ~igure 1 and with the same reference numbers.
~or example, the capacity of the buc~et can be increased without changing the height ~a~b) by mo~ing ....
7~3'~
the point 6 on -the outside (-to 6a). Tile portion ~
then is exten~ed by a plane portion 2a parallel -to the opening plane 4, ~ ich por-tion 2a is joined up wi-th -the back wall la by a joining part lla sirnilar -to par;t 11.
Said bucket~ although wi-th a larger aperture, has the same technical qualities as the bucket of Figure 1 whilst being better adapted to certain types of .material$ such as clogging materials.
It is also possible to increase the height (depth) of the bucket (c + d) by e~tending the section 2 beyond the point 5 (as far as point 5a). The angle in the center of portion 2b extending the section 2 is such that, when added to th~ angle C of 25 it forms an angle F whi.ch can reach 40. Tlle five~sixths of the depth of the bucket are then rcpresented by the distance c, the bucket being extended beyond the point 5a by a portion 9a having the same geometrical characteristics as the aforedescribed portion 9.
Tha aperture of the bucket is then situated in 4a, its back f`ace being the face 1 extended up wardly, or the face la. This diagram shows that .it.
is possible to vary to a large extent the initia:l.
plan of the bucket without altering its working characteristics. To this possibilities can finally be added.the scclle varia-tion of the bucket~ These means permitting to adapt the bucket to the materia.].
to be -transported and to the installatio~, whilst pre serving its main qualities.
The invention is in no way limited tD the de~cription gi~en hereinabove and on the contrary covers any varian-ts that can be brought thereto without departing from the scope or the spirit thareof.
This first drawing can then be adapted so as to adjust axactly the capacity of the bucket to the required capacity as sho~n in Figure 2~ Said ~igure 2 shows the same elemen-ts as described with reference to ~igure 1 and with the same reference numbers.
~or example, the capacity of the buc~et can be increased without changing the height ~a~b) by mo~ing ....
7~3'~
the point 6 on -the outside (-to 6a). Tile portion ~
then is exten~ed by a plane portion 2a parallel -to the opening plane 4, ~ ich por-tion 2a is joined up wi-th -the back wall la by a joining part lla sirnilar -to par;t 11.
Said bucket~ although wi-th a larger aperture, has the same technical qualities as the bucket of Figure 1 whilst being better adapted to certain types of .material$ such as clogging materials.
It is also possible to increase the height (depth) of the bucket (c + d) by e~tending the section 2 beyond the point 5 (as far as point 5a). The angle in the center of portion 2b extending the section 2 is such that, when added to th~ angle C of 25 it forms an angle F whi.ch can reach 40. Tlle five~sixths of the depth of the bucket are then rcpresented by the distance c, the bucket being extended beyond the point 5a by a portion 9a having the same geometrical characteristics as the aforedescribed portion 9.
Tha aperture of the bucket is then situated in 4a, its back f`ace being the face 1 extended up wardly, or the face la. This diagram shows that .it.
is possible to vary to a large extent the initia:l.
plan of the bucket without altering its working characteristics. To this possibilities can finally be added.the scclle varia-tion of the bucket~ These means permitting to adapt the bucket to the materia.].
to be -transported and to the installatio~, whilst pre serving its main qualities.
The invention is in no way limited tD the de~cription gi~en hereinabove and on the contrary covers any varian-ts that can be brought thereto without departing from the scope or the spirit thareof.
Claims (8)
1. Bucket for vertical elevator comprising a back wall designed to be attached to the endless driving member of the elevator, a front face, forming the base of the bucket by joining up with the back face, and to side faces, wherein said bucket being seen in profile, the face forming the bottom of the bucket has a portion constituted by a circular arc centered on a straight line forming an angle of 15 to 25° with the back face and of angular length at least equal to 50°, of which 25° at the most are situated between the said straight line and the said back face, and 25° at least are situated on the other side of said straight line.
2. Bucket as claimed in claim 1, wherein the aperture plane of the bucket being inclined with respect to the back wall to form an angle of between 75 and 80°, the distance separating two straight lines parallel to said opening and passing through the outermost points of the said circular portion, correspond to about five-sixths of the depth of the bucket.
3. Bucket as claimed in claim 2, wherein the said circular portion is extended by a substantially straight upper portion, inclined by about 10° with respect to the line of projection of the upper end of said circular portion on the opening plane and out-wardly from the bucket.
4. Bucket as claimed in claim 3, wherein the said upper portion forms with the tangent of said circular portion at the junction point, an angle at the most equal to 180°.
5. Bucket as claimed in claim 1, wherein the lower end of said circular portion is joined to the back wall over a small joining radius.
6. Bucket as claimed in claim 1, wherein the lower end of said circular portion is joined to the rear wall by a lower portion substantially straight, parallel to the aperture plane, ending into a small joining radius to the rear wall.
7. Bucket as claimed in claim 1, wherein the angle formed by the straight line traversing the center of the circular arc with the back wall of the bucket is equal to 20°.
8. Method for determining the section of the bottom of a bucket such as claimed in claim 2, of predetermined depth, wherein said method consists in tracing two parallel straight lines, the distance between them being the five-sixths of the said depth forming a given angle with a straight line of reference, parallel to the back wall of the bucket, in tracing a secant of these parallel lines inclined so as to form a given angle with the said reference line, and in passing an arc of circle through the intersecting point of the mid-perpendicular of the segment of secant internal to the parallels, with the said parallels, said arc of circle having a center angle of 50° and being centered on the said secant.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8112971A FR2508875B1 (en) | 1981-07-01 | 1981-07-01 | BUCKET FOR VERTICAL LIFTER |
| FR8112971 | 1981-07-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1187830A true CA1187830A (en) | 1985-05-28 |
Family
ID=9260090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000401153A Expired CA1187830A (en) | 1981-07-01 | 1982-04-16 | Bucket for vertical elevator |
Country Status (9)
| Country | Link |
|---|---|
| EP (1) | EP0069022B1 (en) |
| AT (1) | ATE18657T1 (en) |
| AU (1) | AU558374B2 (en) |
| CA (1) | CA1187830A (en) |
| DE (2) | DE3269963D1 (en) |
| DK (1) | DK156166C (en) |
| FR (1) | FR2508875B1 (en) |
| NO (1) | NO822235L (en) |
| PT (1) | PT75118B (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4246999A (en) * | 1978-09-08 | 1981-01-27 | Bryant Poff Inc. | Grain cup |
| FR2453799A1 (en) * | 1979-02-14 | 1980-11-07 | Tech Manutention Et | Bucket elevator mechanism for solid material - has bucket front wall with edge perpendicular to mouth |
-
1981
- 1981-07-01 FR FR8112971A patent/FR2508875B1/en not_active Expired
-
1982
- 1982-04-16 CA CA000401153A patent/CA1187830A/en not_active Expired
- 1982-06-25 PT PT75118A patent/PT75118B/en unknown
- 1982-06-29 NO NO822235A patent/NO822235L/en unknown
- 1982-06-29 AU AU85425/82A patent/AU558374B2/en not_active Ceased
- 1982-06-30 DE DE8282401213T patent/DE3269963D1/en not_active Expired
- 1982-06-30 DE DE198282401213T patent/DE69022T1/en active Pending
- 1982-06-30 AT AT82401213T patent/ATE18657T1/en not_active IP Right Cessation
- 1982-06-30 EP EP82401213A patent/EP0069022B1/en not_active Expired
- 1982-06-30 DK DK294782A patent/DK156166C/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| DK156166C (en) | 1989-12-04 |
| DE69022T1 (en) | 1983-07-07 |
| DE3269963D1 (en) | 1986-04-24 |
| DK294782A (en) | 1983-01-02 |
| AU8542582A (en) | 1983-01-06 |
| FR2508875A1 (en) | 1983-01-07 |
| FR2508875B1 (en) | 1986-07-18 |
| DK156166B (en) | 1989-07-03 |
| EP0069022B1 (en) | 1986-03-19 |
| EP0069022A1 (en) | 1983-01-05 |
| ATE18657T1 (en) | 1986-04-15 |
| NO822235L (en) | 1983-01-03 |
| PT75118B (en) | 1983-12-28 |
| AU558374B2 (en) | 1987-01-29 |
| PT75118A (en) | 1982-07-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |