WO2022180652A1 - Telescopic fork - Google Patents
Telescopic fork Download PDFInfo
- Publication number
- WO2022180652A1 WO2022180652A1 PCT/IT2022/050008 IT2022050008W WO2022180652A1 WO 2022180652 A1 WO2022180652 A1 WO 2022180652A1 IT 2022050008 W IT2022050008 W IT 2022050008W WO 2022180652 A1 WO2022180652 A1 WO 2022180652A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- intermediate slide
- slide
- motion
- chain
- motor
- Prior art date
Links
- 230000001419 dependent effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/12—Platforms; Forks; Other load supporting or gripping members
- B66F9/14—Platforms; Forks; Other load supporting or gripping members laterally movable, e.g. swingable, for slewing or transverse movements
- B66F9/141—Platforms; Forks; Other load supporting or gripping members laterally movable, e.g. swingable, for slewing or transverse movements with shuttle-type movement
Definitions
- the present invention relates to a telescopic fork, in particular of the type used in automatic warehouses, in association with stacker cranes for handling pallets in shelving.
- Known telescopic forks are composed of a fixed lower base and a plurality of movable slides, or sliders or sliding elements, telescopically extendable which move for the translation of loads.
- the number of mobile telescopic slides (two, three or four) is chosen according to the overall stroke required to load the pallets into the racks and the extent of the loads to be supported; the pallets can be loaded on shelves arranged in three rows at a first, double and triple depth.
- Each slide runs on wheels and is moved by chain drives, pulleys and/or gears connected to a motor.
- the fork is able to reach a fully retracted position, in which the slides are superimposed and aligned vertically above the lower base, and a fully extended position, in which the slides are longitudinally extended and vertically offset with respect to each other and with respect to the lower base.
- Known telescopic forks have the problem that, even if their full extension is not required to reach the pallet loading position in the rack, to load the pallet on the racks, it is necessary to longitudinally move all the slides, and it is necessary to then raise the pallets, welding on the crossbars the suitable thicknesses according to the height of the overlapping skids and arranged under the pallets, to allow the passage of the fork with a consequent waste of space that cannot be used for loading the pallets on the shelves of the different files, and a significant extra cost of materials and labor.
- Object of the present invention is solving these problems by providing a telescopic fork which occupies a reduced space in height during the loading of the pallets on the racks, and therefore allows maximizing the space used for loading the pallets.
- Figure 1 shows a cross-sectional view of a telescopic fork according to the present invention
- Figure 2 shows three longitudinal sectional views of a telescopic fork according to the present invention extended in a first depth
- Figure 3 shows three longitudinal sectional views of a telescopic fork according to the present invention extended in a second depth
- Figure 4 shows three longitudinal sectional views of a telescopic fork according to the present invention extended in a third depth
- Figure 5 shows three longitudinal section views of a shelving and a telescopic fork according to the present invention extended in first, second and third depths;
- Figure 6 shows a longitudinal section view of a component of a telescopic fork according to the present invention
- Figure 7 shows a sectional view and an enlarged detail of a component of a telescopic fork according to the present invention.
- a preferred embodiment of the telescopic fork 10 according to the invention will be described below, comprising four movable slides 12, 13, 14 and 15.
- the telescopic fork 10 of the invention comprises a fixed lower base 11, a first intermediate slide 12 telescopically movable with respect to the base 11, a second intermediate slide 13 telescopically movable with respect to the first intermediate slide 12, a third intermediate slide 14 telescopically movable with respect to the second intermediate slide 13, and a top slide 15, in turn telescopically movable with respect to the third intermediate slide 14, at least one of said movable slides 12, 13, 14, 15, being moved independently of the other slides by relative actuation means, for example comprising at least one electric motor and chain drives, pulleys and/or gears.
- relative actuation means for example comprising at least one electric motor and chain drives, pulleys and/or gears.
- the telescopic fork 10 of the invention includes: first drive means, preferably comprising a first motor Ml and a first drive system 31 with chain, pulleys and/or gears, configured to transmit motion to the top slide 15 through the movement of at least one intermediate slide 12, 13, 14; preferably, the first actuation means Ml, 31 are configured to transmit motion to the first intermediate slide 12, to the second intermediate slide 13 and/or to the third intermediate slide 14, and to the top slide 15 by means of the movement of the third intermediate slide 14 or of the second intermediate slide 13; second drive means, preferably comprising a second motor M2 and a second drive system 32 with chain, pulleys and/or gears, configured to transmit motion to at least one intermediate slide 12, 13; preferably the second actuation means M2, 32 are configured to transmit motion to the first intermediate slide 12 and to the second intermediate slide 13;
- third drive means preferably comprising a third motor M3 and a third drive system 33 with chain, pulleys and/or gears, configured to transmit motion to the first intermediate slide 12.
- the embodiment of the telescopic fork 10 of the invention having four movable slides 12, 13, 14 and 15, preferably comprises:
- the first drive system 31 comprising a first chain 41 associated with the fixed lower base 11 by pulleys and driven by the first motor Ml, a second chain 43 associated with the second intermediate slide 13 by pulleys and a first gear train 42 associated with the first intermediate slide 12, said chains 41, 43 being engaged in the gears 42 to move the first intermediate slide 12 and the second intermediate slide 13;
- the second chain 43 also transmits motion to the third intermediate slide 14, for example through a first rack mechanism 44, and the third intermediate slide 14 transmits its motion to the top slide 15, for example through at least a third chain 45, preferably two third chains 45, connected to the second intermediate slide 13 and to the top slide 15;
- the second drive system 32 comprising a second gear train 51 associated with the fixed lower base 11 and driven by the second motor M2, and a fourth chain 52 associated with the first intermediate slide 12 by means of pulleys so as to transmit its motion to the second intermediate slide 13, for example by means of a second rack mechanism 53;
- the third drive system 33 comprising a third gear train 61 associated
- the telescopic fork 10 having four movable slides 12, 13, 14 and 15 comprises a chain tensioner 100 configured to keep the first chain 41 of the first drive system 31 under tension, said chain tensioner 100 comprising a first pair of rollers 101a, 101b and a second pair of rollers 102a, 102b, said pairs of rollers being rotatably connected to a support structure 105 so that the first chain 41 is wound around the rollers passing between the two rollers of each torque, at least one of said rollers 101a being adjustable so as to move its rotation axis to keep the first chain 41 in tension.
- Each roller 101a, 101b, 102a, 102b can be rotated on its own axis connected to the support structure 105, and preferably at least one of said rollers 101a, 101b, 102a, 102b can be rotated on an axis 108 slidably connected to the support structure 105 for adjusting the tension of the first chain 41; preferably, the adjustable roller 101a is rotatably connected to a fork 106 which in turn is sliding with respect to the support structure 105 so as to keep the first chain 41 in tension.
- the fork 106 comprises a threaded screwed shaft 107, preferably by means of a saw tooth thread 110, into a grooved washer 111 inserted in a seat 112 made inside a wall 115 of the support structure 105, so as to lock the fork 106, and with it the adjustable roller 101a, in a suitable position to adjust the tension of the first chain 41 by screwing and unscrewing the thread 110 by means of a knob 116 inside which an elastic element is inserted, for example a helical spring 118.
- the first drive means Ml, 31, preferably the first motor Ml are activated, which transmit the motion to the top slide 15 by means of the movement of the third intermediate slide 14 associated thereto, preferably by means of the first chain 41, the second chain 43 and the first gear train 42, while the first intermediate slide 12 and the second intermediate slide 13 are held by the respective second actuation means M2, 32 and third drive means M3, 33, preferably keeping the second motor M2 locked, which in turn locks the second gear train 51 and the fourth chain 52, and keeping the third motor M3 locked.
- the second drive means M2, 32 preferably the second motor M2 are activated, which transmit the motion to the second intermediate slide 13, preferably by means of the second gear train 51, fourth chain 52 and second rack mechanism 53; the second intermediate slide 13 in turn transmits motion to the third intermediate slide 14 through the first drive system 31, preferably through the second chain 43 and the first rack mechanism 44, while the first intermediate slide 12 is held by the third drive means M3, 33, preferably by keeping the third motor M3 locked.
- the third drive means M3, 33 preferably the third motor M3, are activated at a basic speed to transmit the motion to the first intermediate side 12, preferably through the third gear train 61 and the third rack mechanism 62, while the second motor M2 is locked, leaving the fourth chain 52 free to rotate, and the first drive means Ml, 31, preferably the first motor Ml, the second chain 43 and the first gear train 42, are activated in the opposite direction and at a speed proportional, for example double, to the base speed to transmit motion to the first intermediate slide 12, to the second intermediate slide 13, to the third intermediate slide 14 and to the top slide 15 through the movement of the third intermediate slide 14.
- the telescopic fork 10 of the invention thanks to the possibility of moving at least one mobile slide independently of the other slides, allows to occupy a reduced space in height during the loading of the pallets on the racks and therefore allows to maximize the space used for the loading of pallets in the racks.
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Warehouses Or Storage Devices (AREA)
- Fluid-Damping Devices (AREA)
Abstract
A telescopic fork (10) is described comprising a fixed base (11), a first intermediate slide (12) telescopically movable with respect to the fixed base (11), a second intermediate slide (13) and/or a third intermediate slide (14) telescopically movable with respect to the first intermediate slide (12) and/or with respect to the second intermediate slide (13), and a top slide (15) in turn telescopically movable with respect to the third intermediate slide (14) or with respect to the second intermediate slide (13), at least one of the movable slides (12, 13, 14, 15) being moved independently of the other slides by relative actuation means; a method for operating said telescopic fork (10) is also described.
Description
TELESCOPIC FORK
The present invention relates to a telescopic fork, in particular of the type used in automatic warehouses, in association with stacker cranes for handling pallets in shelving. Known telescopic forks are composed of a fixed lower base and a plurality of movable slides, or sliders or sliding elements, telescopically extendable which move for the translation of loads. The number of mobile telescopic slides (two, three or four) is chosen according to the overall stroke required to load the pallets into the racks and the extent of the loads to be supported; the pallets can be loaded on shelves arranged in three rows at a first, double and triple depth. Each slide runs on wheels and is moved by chain drives, pulleys and/or gears connected to a motor. The fork is able to reach a fully retracted position, in which the slides are superimposed and aligned vertically above the lower base, and a fully extended position, in which the slides are
longitudinally extended and vertically offset with respect to each other and with respect to the lower base.
Known telescopic forks have the problem that, even if their full extension is not required to reach the pallet loading position in the rack, to load the pallet on the racks, it is necessary to longitudinally move all the slides, and it is necessary to then raise the pallets, welding on the crossbars the suitable thicknesses according to the height of the overlapping skids and arranged under the pallets, to allow the passage of the fork with a consequent waste of space that cannot be used for loading the pallets on the shelves of the different files, and a significant extra cost of materials and labor.
Object of the present invention is solving these problems by providing a telescopic fork which occupies a reduced space in height during the loading of the pallets on the racks, and therefore allows maximizing the space used for loading the pallets.
The aforesaid and other objects and advantages of the invention, as will emerge from the following description, are achieved with a telescopic fork
such as that described in the main claim. Preferred embodiments and non-trivial variants of the present invention form the subject matter of the dependent claims. It is understood that all attached claims form an integral part of the present description.
It will be immediately obvious that innumerable variations and modifications (for example relating to shape, dimensions, arrangements and parts with equivalent functionality) can be made to what is described, without departing from the scope of the invention as appears from the attached claims.
The present invention will be better described by a preferred embodiment thereof, provided by way of non-limiting example, with reference to the attached drawings, in which:
Figure 1 shows a cross-sectional view of a telescopic fork according to the present invention;
Figure 2 shows three longitudinal sectional views of a telescopic fork according to the present invention extended in a first depth;
Figure 3 shows three longitudinal sectional views of a telescopic fork according to the present invention extended in a second depth;
Figure 4 shows three longitudinal sectional
views of a telescopic fork according to the present invention extended in a third depth;
Figure 5 shows three longitudinal section views of a shelving and a telescopic fork according to the present invention extended in first, second and third depths;
Figure 6 shows a longitudinal section view of a component of a telescopic fork according to the present invention; and Figure 7 shows a sectional view and an enlarged detail of a component of a telescopic fork according to the present invention.
A preferred embodiment of the telescopic fork 10 according to the invention will be described below, comprising four movable slides 12, 13, 14 and 15.
With reference to the Figures, the telescopic fork 10 of the invention comprises a fixed lower base 11, a first intermediate slide 12 telescopically movable with respect to the base 11, a second intermediate slide 13 telescopically movable with respect to the first intermediate slide 12, a third intermediate slide 14 telescopically movable with respect to the second intermediate slide 13, and a top slide 15, in turn
telescopically movable with respect to the third intermediate slide 14, at least one of said movable slides 12, 13, 14, 15, being moved independently of the other slides by relative actuation means, for example comprising at least one electric motor and chain drives, pulleys and/or gears.
The general embodiment of the slides of the telescopic fork 10 of the invention is known; in the following description, only the particularly significant elements for the implementation of the invention will be described in detail.
The telescopic fork 10 of the invention includes: first drive means, preferably comprising a first motor Ml and a first drive system 31 with chain, pulleys and/or gears, configured to transmit motion to the top slide 15 through the movement of at least one intermediate slide 12, 13, 14; preferably, the first actuation means Ml, 31 are configured to transmit motion to the first intermediate slide 12, to the second intermediate slide 13 and/or to the third intermediate slide 14, and to the top slide 15 by means of the movement of the third intermediate slide 14 or of the second intermediate slide 13;
second drive means, preferably comprising a second motor M2 and a second drive system 32 with chain, pulleys and/or gears, configured to transmit motion to at least one intermediate slide 12, 13; preferably the second actuation means M2, 32 are configured to transmit motion to the first intermediate slide 12 and to the second intermediate slide 13;
- third drive means, preferably comprising a third motor M3 and a third drive system 33 with chain, pulleys and/or gears, configured to transmit motion to the first intermediate slide 12.
The embodiment of the telescopic fork 10 of the invention having four movable slides 12, 13, 14 and 15, preferably comprises:
- the first drive system 31 comprising a first chain 41 associated with the fixed lower base 11 by pulleys and driven by the first motor Ml, a second chain 43 associated with the second intermediate slide 13 by pulleys and a first gear train 42 associated with the first intermediate slide 12, said chains 41, 43 being engaged in the gears 42 to move the first intermediate slide 12 and the second intermediate slide 13; the second chain 43 also transmits motion to the third intermediate slide
14, for example through a first rack mechanism 44, and the third intermediate slide 14 transmits its motion to the top slide 15, for example through at least a third chain 45, preferably two third chains 45, connected to the second intermediate slide 13 and to the top slide 15; the second drive system 32 comprising a second gear train 51 associated with the fixed lower base 11 and driven by the second motor M2, and a fourth chain 52 associated with the first intermediate slide 12 by means of pulleys so as to transmit its motion to the second intermediate slide 13, for example by means of a second rack mechanism 53; - the third drive system 33 comprising a third gear train 61 associated with the fixed lower base 11 and driven by the third motor M3 so as to transmit motion to the first intermediate slide 12, for example by means of a third rack mechanism 62. In a preferred embodiment of the invention, the telescopic fork 10 having four movable slides 12, 13, 14 and 15 comprises a chain tensioner 100 configured to keep the first chain 41 of the first drive system 31 under tension, said chain tensioner 100 comprising a first pair of rollers 101a, 101b
and a second pair of rollers 102a, 102b, said pairs of rollers being rotatably connected to a support structure 105 so that the first chain 41 is wound around the rollers passing between the two rollers of each torque, at least one of said rollers 101a being adjustable so as to move its rotation axis to keep the first chain 41 in tension.
Each roller 101a, 101b, 102a, 102b can be rotated on its own axis connected to the support structure 105, and preferably at least one of said rollers 101a, 101b, 102a, 102b can be rotated on an axis 108 slidably connected to the support structure 105 for adjusting the tension of the first chain 41; preferably, the adjustable roller 101a is rotatably connected to a fork 106 which in turn is sliding with respect to the support structure 105 so as to keep the first chain 41 in tension.
Preferably, the fork 106 comprises a threaded screwed shaft 107, preferably by means of a saw tooth thread 110, into a grooved washer 111 inserted in a seat 112 made inside a wall 115 of the support structure 105, so as to lock the fork 106, and with it the adjustable roller 101a, in a suitable position to adjust the tension of the
first chain 41 by screwing and unscrewing the thread 110 by means of a knob 116 inside which an elastic element is inserted, for example a helical spring 118. In operation, when the fork 10 of the invention has to load a pallet on a shelving 101 arranged at the first depth, only the first drive means Ml, 31, preferably the first motor Ml, are activated, which transmit the motion to the top slide 15 by means of the movement of the third intermediate slide 14 associated thereto, preferably by means of the first chain 41, the second chain 43 and the first gear train 42, while the first intermediate slide 12 and the second intermediate slide 13 are held by the respective second actuation means M2, 32 and third drive means M3, 33, preferably keeping the second motor M2 locked, which in turn locks the second gear train 51 and the fourth chain 52, and keeping the third motor M3 locked. When the fork 10 of the invention has to load a pallet onto a shelving 102 arranged at a second depth, the second drive means M2, 32, preferably the second motor M2, are activated, which transmit the motion to the second intermediate slide 13, preferably by means of the second gear train 51,
fourth chain 52 and second rack mechanism 53; the second intermediate slide 13 in turn transmits motion to the third intermediate slide 14 through the first drive system 31, preferably through the second chain 43 and the first rack mechanism 44, while the first intermediate slide 12 is held by the third drive means M3, 33, preferably by keeping the third motor M3 locked.
When the fork 10 of the invention has to load a pallet onto a shelving 103 arranged in the third depth, the third drive means M3, 33, preferably the third motor M3, are activated at a basic speed to transmit the motion to the first intermediate side 12, preferably through the third gear train 61 and the third rack mechanism 62, while the second motor M2 is locked, leaving the fourth chain 52 free to rotate, and the first drive means Ml, 31, preferably the first motor Ml, the second chain 43 and the first gear train 42, are activated in the opposite direction and at a speed proportional, for example double, to the base speed to transmit motion to the first intermediate slide 12, to the second intermediate slide 13, to the third intermediate slide 14 and to the top slide 15 through the movement of the third intermediate
slide 14.
Advantageously, the telescopic fork 10 of the invention, thanks to the possibility of moving at least one mobile slide independently of the other slides, allows to occupy a reduced space in height during the loading of the pallets on the racks and therefore allows to maximize the space used for the loading of pallets in the racks.
Claims
1. Telescopic fork (10) comprising a fixed base (11), a first intermediate slide (12) telescopically movable with respect to the fixed base (11), a second intermediate slide (13) and/or a third intermediate slide (14) telescopically movable with respect to the first intermediate slide (12) and/or with respect to the second intermediate slide (13), and a top slide (15) in turn telescopically movable with respect to the third intermediate slide (14) or with respect to the second intermediate slide (13), at least one of said movable slides (12, 13, 14, 15) being moved independently of the other slides by relative actuation means, characterized in that the telescopic fork (10) comprises: first actuation means (Ml, 31) configured to transmit motion to the top slide (15) through the movement of at least one intermediate slide (12, 13, 14); second actuation means (M2, 32) configured to transmit motion to at least one intermediate slide (12, 13); third actuation means (M3, 33) configured to transmit motion to the first intermediate slide
(12).
2. Telescopic fork (10) according to claim 1, characterized in that:
- the first drive means comprise a first motor (Ml) and a first drive system (31) with chain, pulleys and/or gears,
- the second drive means comprise a second motor (M2) and a second drive system (32) with chain, pulleys and/or gears, - the third drive means comprise a third motor (M3) and a third drive system (33) with chain, pulleys and/or gears.
3. Telescopic fork (10) according to claim 1 or 2, characterized in that: - the first actuation means (Ml, 31) are configured to transmit motion to the first intermediate slide (12), to the second intermediate slide (13) and/or to the third intermediate slide (14), and to the top slide (15) through the movement of the third intermediate slide (14) or of the second intermediate slide (13); and the second actuation means (M2, 32) are configured to transmit the motion to the first intermediate slide (12) and to the second intermediate slide (13).
4. Telescopic fork (10) according to claim 2 or 3, characterized in that:
- the first drive system (31) comprises a first chain (41) associated with the fixed lower base (11) and driven by the first motor (Ml), a second chain (43) associated with the second intermediate slide (13) and a first gear train (42) associated with the first intermediate slide (12), said chains (41, 43) being engaged in the gears (42) to move the first intermediate slide (12) and the second intermediate slide (13), said third intermediate slide (14) or second) intermediate slide (13) transmits its motion to the top slide (15);
- the second drive system (32) comprises a second gear train (51) associated with the fixed lower base (11) and driven by the second motor (M2) and a fourth chain (52) associated with the first intermediate slide (12) so as to transmit its motion to the second intermediate slide (13); - the third drive system (33) comprises a third gear train (61) associated with the fixed base (11) and driven by the third motor (M3) so as to transmit motion to the first intermediate slide (12). 5. Telescopic fork (10) according to claim 4,
characterized in that:
- the second chain (43) also transmits motion to the third intermediate slide (14) through a first rack mechanism (44), and the third intermediate slide (14) transmits its motion to the top slide (15) through at least a third chain (45) connected to the second intermediate slide (13) and to the top slide (15);
- the fourth chain (52) transmits its motion to the second intermediate slide (13) by means of a second rack mechanism (53);
- the third gear train (61) transmits motion to the first intermediate slide (12) by means of a third rack mechanism (62). 6. Method for operating a telescopic fork (10) according to any one of the preceding claims, characterized in that only the first drive means (Ml, 31) are activated to load a pallet onto a shelving (101) arranged at the first depth, which transmit motion to the top slide (15) through the movement of the third intermediate slide (14) associated with it, while the first intermediate slide (12) and the second intermediate slide (13) are held by the respective second actuation means (M2, 32) and third actuation means (M3, 33).
7. Method for operating a telescopic fork (10) according to any one of claims 1 to 5, characterized in that the second drive means (M2, 32) transmit the motion to the second intermediate slide (13), the second intermediate slide (13) in turn transmits the motion to the third intermediate slide (14) through the first drive system (31) while the first intermediate slide (12) is held by the third actuation means (M3, 33). 8. Method for operating a telescopic fork (10) according to any one of claims 2 to 5, characterized in that, in order to load a pallet on a shelving (101) arranged at the third depth, the third actuation means (M3, 33) at a base speed transmit motion to the first intermediate slide
(12) while the second motor (M2) is locked, leaving the fourth chain (52) free to rotate, and the first drive means (Ml, 31) are activated in the opposite direction and at a speed proportional to the base speed to transmit motion to the first intermediate slide (12), to the second intermediate slide (13), to the third intermediate slide (14) and to the top slide (15) through the movement of the third intermediate slide (14). 9. Method for operating a telescopic fork (10)
according to any one of claims 6 to 8, characterized in that:
- to load a pallet on a shelving (101) placed at the first depth, the first motor (Ml) is activated which transmits the motion to the top slide (15) by means of the first chain (41), the second chain (43) and the first gear train (42), while the first intermediate slide (12) and the second intermediate slide (13) are held by keeping the second motor (M2) locked, which in turn blocks the second gear train (51) and the fourth chain (52) and keeps the third motor (M3) locked;
- to load a pallet on a shelving (102) arranged at the second depth, the second motor (M2) is activated which transmits motion to the second intermediate slide (13) by means of the second gear train (51), the fourth chain (52) and the second rack mechanism (53), the second intermediate slide (13) in turn transmits motion to the third intermediate slide (14) by means of the second chain (43) and the first rack mechanism (44), while the first intermediate slide (12) is held by keeping the third motor (M3) locked;
- to load a pallet on a shelving (103) arranged at the third depth, the third motor (M3) is activated
at a basic speed to transmit the motion to the first intermediate slide (12) through the third gear train (61) and the third rack mechanism (62), while the second motor (M2) is locked, leaving the fourth chain (52) free to rotate, and the first motor (Ml), the second chain (43) and the first gear train (42) are activated in the opposite direction and at a speed proportional to the base speed to transmit the motion to the first intermediate slide (12), to the second intermediate slide (13), to the third intermediate slide (14) and to the top slide (15) through the movement of the third intermediate slide (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP22704967.3A EP4298052A1 (en) | 2021-02-24 | 2022-01-26 | Telescopic fork |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT102021000004328A IT202100004328A1 (en) | 2021-02-24 | 2021-02-24 | Telescopic fork |
| IT102021000004328 | 2021-02-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2022180652A1 true WO2022180652A1 (en) | 2022-09-01 |
Family
ID=76034933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/IT2022/050008 WO2022180652A1 (en) | 2021-02-24 | 2022-01-26 | Telescopic fork |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4298052A1 (en) |
| IT (1) | IT202100004328A1 (en) |
| WO (1) | WO2022180652A1 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994004447A1 (en) * | 1992-08-19 | 1994-03-03 | Cleco Limited | Double reach platten assembly |
| FR2709745A1 (en) * | 1993-09-08 | 1995-03-17 | Productique Cie Gle | Gripping system with double depth telescopic forks |
| DE19623022A1 (en) * | 1996-06-08 | 1997-12-11 | Afb Anlagen Und Filterbau Gmbh | Telescopic table for taking loads |
| DE10040492A1 (en) * | 2000-08-18 | 2002-02-28 | Johann Gehrig | Telescopic arm for discontinuous transport of objects/materials has elements with toothed rods that interact with pinions moved by drive unit and that are successively deployed and retracted |
-
2021
- 2021-02-24 IT IT102021000004328A patent/IT202100004328A1/en unknown
-
2022
- 2022-01-26 EP EP22704967.3A patent/EP4298052A1/en active Pending
- 2022-01-26 WO PCT/IT2022/050008 patent/WO2022180652A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994004447A1 (en) * | 1992-08-19 | 1994-03-03 | Cleco Limited | Double reach platten assembly |
| FR2709745A1 (en) * | 1993-09-08 | 1995-03-17 | Productique Cie Gle | Gripping system with double depth telescopic forks |
| DE19623022A1 (en) * | 1996-06-08 | 1997-12-11 | Afb Anlagen Und Filterbau Gmbh | Telescopic table for taking loads |
| DE10040492A1 (en) * | 2000-08-18 | 2002-02-28 | Johann Gehrig | Telescopic arm for discontinuous transport of objects/materials has elements with toothed rods that interact with pinions moved by drive unit and that are successively deployed and retracted |
Also Published As
| Publication number | Publication date |
|---|---|
| IT202100004328A1 (en) | 2021-05-24 |
| EP4298052A1 (en) | 2024-01-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3419926A1 (en) | Telescopic drive, stacker crane comprising same and operating method and use therefor | |
| EP1772400A1 (en) | Load carrying device having telescopic booms and adjustable pushers | |
| DE20307005U1 (en) | Powered pallet trolley for automated warehouse has a lever-operated gear also linked to the motor and lifting platform | |
| WO2018188898A1 (en) | Industrial truck comprising a thrust device | |
| WO2022180652A1 (en) | Telescopic fork | |
| DE102013019688A1 (en) | Transport system with vehicle, in particular for transporting a lifting device | |
| US20070031219A1 (en) | Load receiving means for single or multiple deep storage and retrieval of objects into and from a shelf | |
| EP0697368B1 (en) | Pick-up attachment for pallets | |
| DE102008049991A1 (en) | Load-receiving means for storage and retrieval of loads to or from storage bins of a shelf assembly | |
| DE3731847C2 (en) | ||
| DE2409504A1 (en) | TELESCOPIC EXTENSIBLE AND RETRACTABLE LOAD LIFTING EQUIPMENT FOR STACKING DEVICES OD. DGL | |
| DE4112830C2 (en) | Load suspension device for storage containers | |
| CN111372493B (en) | Modular frame for shelving | |
| US4437808A (en) | Apparatus for causing a unit guided on rectilinear rails to move gradually and a forklift equipped with such a unit | |
| WO2017153724A1 (en) | Elevating platform | |
| EP4048622B1 (en) | Pantograph-type lifting system | |
| DE4013859C2 (en) | ||
| DE2120324A1 (en) | Loading device | |
| EP1122207B1 (en) | Swivelling reach fork | |
| EP0952280B1 (en) | Shelf storage, especially for passenger cars | |
| SU918219A1 (en) | Load lifting platform of stock-piling crane | |
| SU1442471A1 (en) | Telescopic gripper | |
| WO1984001766A1 (en) | An arrangement for a materials handling appliance | |
| DE19623021A1 (en) | Telescopic lifting table for load pallet | |
| CN117623176A (en) | Double objective table for stacker and application method of double objective table |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 22704967 Country of ref document: EP Kind code of ref document: A1 |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2022704967 Country of ref document: EP |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| ENP | Entry into the national phase |
Ref document number: 2022704967 Country of ref document: EP Effective date: 20230925 |