CN107021436B - A load bracket and fork truck for fork truck - Google Patents
A load bracket and fork truck for fork truck Download PDFInfo
- Publication number
- CN107021436B CN107021436B CN201611078803.4A CN201611078803A CN107021436B CN 107021436 B CN107021436 B CN 107021436B CN 201611078803 A CN201611078803 A CN 201611078803A CN 107021436 B CN107021436 B CN 107021436B
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- Prior art keywords
- contact member
- front portion
- load carrier
- tilting
- bracket
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- 239000000463 material Substances 0.000 claims description 8
- 229920003023 plastic Polymers 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 5
- 238000006073 displacement reaction Methods 0.000 description 9
- 238000012423 maintenance Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 102000004315 Forkhead Transcription Factors Human genes 0.000 description 2
- 108090000852 Forkhead Transcription Factors Proteins 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000969 carrier Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
Images
Classifications
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- 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
- B66F9/16—Platforms; Forks; Other load supporting or gripping members inclinable relative to mast
-
- 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
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Forklifts And Lifting Vehicles (AREA)
Abstract
The invention relates to a load carrier for a forklift (10), comprising: a front portion (20), a rear portion (22) and a tilting device (24), wherein the front portion (20) is adapted to carry at least one fork (12) and the rear portion (22) is adapted to be movably arranged on a mast (16) of the forklift (10), wherein the front portion (20) is movably attached to the rear portion (22) such that the front portion (20) is pivotable relative to the rear portion (22) about a pivot axis (a), and wherein the tilting device (24) comprises a movable part (28') arranged for pivoting the front portion (20). The tilting device further comprises at least one contact member (30) arranged on the movable part (28'), wherein the at least one contact member (30) is movably mounted with respect to the movable part (28'), and wherein the at least one contact member (30) comprises a flat contact surface (32). The invention also relates to a forklift (10) comprising such a load carrier (14).
Description
Technical Field
The present invention relates to a load carrier for a forklift truck and to a forklift truck comprising such a load carrier.
Background
Forklifts are typically used to handle loads by means of one or more load carrying forks. The forks are typically attached to a load carrier, and the load carrier is movably arranged on the mast, such that the forks and the load carrier can slide up and down along the mast. The load carriage may be configured such that the forks may move laterally relative to the mast. The load carriage is also typically configured such that the forks can pivot relative to the mast. The pivoting movement is suitably actuated by some type of tilting arrangement. One reason for the desire to tilt the load carrier relative to the mast is to balance the load, such as a pallet, horizontally when placing the load into the rack. Otherwise, if the load carrier is not level, the fork top has a risk of colliding with the pallet, causing serious damage. Various solutions exist on the market for achieving a durable and reliable tilting arrangement of the load carrier. However, most solutions have a complex configuration and comprise a plurality of parts which are prone to wear due to the large loads acting on the load carrier.
Document GB2266700A discloses a load lifting carriage in which a first actuator is arranged to move the front portion laterally relative to the rear portion and a second actuator is arranged to tilt the front portion relative to the rear portion. The second actuating means comprises two hydraulically operated tilt jacks. Each tilt jack has a cylinder and a piston rod with the piston rod having a hemispherical end acting on the front portion. The end may be covered with a material for reducing friction during lateral movement (sideshift). Document GB1151889 discloses an industrial truck with a load carrier which is laterally movable relative to a support member and tiltable. The load carrier includes a portion that slides relative to a ball formed at an end of the tilt piston. The tilt piston may protrude to enable tilting of the load carrier.
Disclosure of Invention
Despite the known solutions in this field, there is still a need to develop load carriers for forklifts that are easy to manufacture and assemble and that are durable and reliable.
An object of the present invention is to achieve a durable and reliable load carrier for a forklift.
Another object of the invention is to achieve a load carrier for a forklift truck which is easy to manufacture and assemble.
A further object of the present invention is to achieve a load carrier for a forklift truck which facilitates maintenance and service.
Another object of the invention is to achieve an advantageous forklift truck which is durable and reliable and which is easier to manufacture and assemble.
The object mentioned herein is achieved by the following load carrier for a forklift and a forklift comprising such a load carrier.
According to an aspect of the present invention, there is provided a load carriage for a forklift, the load carriage comprising: a front part, a rear part and a tilting device, wherein the front part is adapted to carry at least one fork and the rear part is adapted to be movably arranged on a mast of a forklift, wherein the front part is movably attached to the rear part such that the front part is pivotable relative to the rear part about a pivot axis, and wherein the tilting device comprises a movable part arranged for pivoting the front part. The tilting device further comprises at least one contact member arranged on the movable member, wherein the at least one contact member is movably mounted with respect to the movable member, and wherein the at least one contact member comprises a flat contact surface. The tilting means are preferably arranged on the rear portion and thus at least one contact member is arranged to interact with the front portion. Thus, the contact surface is adapted to abut the front portion. The forklift is adapted to carry a load on the at least one fork. At least one fork is arranged on a load carrier which can slide up and down along the mast or masts of the forklift. When transporting a load on a forklift, the forks may be tilted upwards to ensure that the load does not fall off the forks. According to the present invention, the fork can be tilted by tilting the front portion of the load carrier relative to the rear portion. Thus, at least one contact member of the tilting device is affected by a large force from a load on the front part when tilting the front part. With a flat contact surface according to the invention, the contact area between the front part and the at least one contact member is increased and thus the at least one contact member is able to carry a larger force. When the tilting means affect the front portion such that it pivots about the pivot axis, the front portion will tilt relative to the rear portion. By arranging at least one contact member movable with respect to the movable part of the tilting means, the contact member can be adapted to the front. Thus, regardless of the position of the front portion, the flat contact surface will be parallel to and abut the front portion of the load carrier. A durable and reliable load carrier is thereby achieved.
Alternatively, the tilting means are arranged on the front portion and thus the at least one contact member is arranged to interact with the rear portion in order to tilt the front portion. In this case, the contact surface is adapted to abut the rear of the load carrier.
The movable part of the tilting means is suitably movable in a direction substantially perpendicular to the pivot axis.
The tilting means may comprise at least one tilting cylinder with a piston, wherein the piston constitutes the movable part of the tilting means. Thus, at least one contact member is arranged on the piston. The piston of the tilting cylinder can suitably be moved in a direction substantially perpendicular to the pivot axis. The at least one contact member is suitably movably arranged with respect to the piston. The piston of the tilting cylinder suitably comprises a piston rod protruding towards the front of the load carrier. Thus, the at least one contact member is suitably arranged on the piston rod end facing the front.
Alternatively, the tilting means comprise an electric actuator having a part which is movable in a direction substantially perpendicular to the pivot axis. Thus, the at least one contact member is suitably movably arranged with respect to the movable part of the electric actuator. Thus, the tilting means may be hydraulic, pneumatic or electric.
The front portion of the load carrier suitably comprises an upper horizontal section, a lower horizontal section and two side sections. Each side section is suitably connected to the ends of the upper and lower horizontal sections, respectively. The side sections extend longitudinally between the upper and lower horizontal sections. Thus, the longitudinal extension of the front portion is in a direction parallel to the longitudinal extension of the side sections. The longitudinal extension of the respective side section is perpendicular to the longitudinal extension of the upper and lower horizontal sections. The rear section preferably comprises two vertical side sections arranged in parallel. The two vertical side sections are suitably connected to each other by a horizontal section at the lower end of each vertical section. The longitudinal extension of the rear portion is in the vertical direction and parallel to the longitudinal extension of the post adapted to arrange the rear portion. The longitudinal extension of the upper and lower horizontal sections of the front portion is parallel to the longitudinal extension of the horizontal section of the rear portion. The front and rear portions are connected to each other by means of pivot means arranged at the upper ends of the front and rear portions, respectively. The upper horizontal section of the front is suitably connected to the pivoting means. The tilting means is suitably arranged at the lower end of the rear portion. The tilting means usually interact with the lower horizontal section of the front portion such that the front portion pivots about the pivot axis at the upper horizontal section.
The pivoting means suitably comprises an elongate pivot portion fixedly connected to the rear vertical side section. The pivot extends longitudinally parallel to the upper and lower horizontal sections of the front. The pivot suitably comprises a semi-cylindrical top portion. The upper horizontal section of the front portion preferably includes a hook portion adapted to be positioned over the semi-cylindrical top portion of the pivot portion. The front part is thus suspended from the pivoting means. Thus, the front portion pivots about the top portion of the pivot. Thus, the pivot axis coincides with the centre line of the top portion. According to an aspect of the invention, the front portion is laterally movable relative to the rear portion. The pivoting means suitably comprises at least one displacement means arranged in a recess of the pivoting part. The pivot means may comprise two displacement means, each arranged in a recess at each end of the elongate pivot portion. The displacement means is movably arranged inside the pivot and protrudes from the recess of the pivot. The displacement means may be controlled to move relative to the pivot in the direction of the longitudinal extension of the pivot. The respective displacement means can be moved relative to the pivot by, for example, controlling the pressure inside the recess. The displacement means will act on the upper horizontal section of the front part and the front part will move sideways on top of the pivot. In this way, the front portion can be moved laterally relative to the pivot portion and thus relative to the rear portion. The load carrier is thus capable of a so-called side-shifting movement. The control unit on the truck is suitably adapted to control the front side shifting movement. When the upper horizontal section of the front is moved laterally along the longitudinal extension of the pivot means, the lower horizontal section of the front will move laterally relative to the at least one contact member. Thus, the at least one contact member preferably comprises a material that generates a desired friction between the front portion and the at least one contact member, so that the at least one contact member is not unnecessarily worn. Alternatively or additionally, a plate/bar adapted to reduce friction against the at least one contact member may be arranged on the lower horizontal section of the front portion.
The movable part of the tilting device is movable in a direction substantially perpendicular to the pivot axis and substantially perpendicular to the longitudinal extension of the rear portion. The longitudinal extension of the rear portion is parallel to the longitudinal extension of the mast on which the load carrier is mounted. When the movable part is in the idle position, the front part is in a substantially vertical position with respect to the surface on which the truck is operated. Thus, the front portion is positioned substantially perpendicular to the direction of movement of the movable part. Thus, the front and rear portions are substantially parallel to each other in the longitudinal direction. In this way, the fork head of at least one fork arranged on the front part will be positioned substantially perpendicular to the rear part. When the movable part is moved in a direction towards the front, the at least one contact member pressing against the front will pivot the front about the pivot axis and the front will tilt upwards. In this way, the prongs of at least one fork disposed on the front portion will be positioned at an angle of less than 90 degrees relative to the rear portion. When the movable member is in the removal position, the front portion may be tilted such that the prong of the at least one prong is positioned at an angle between 85 degrees and 89 degrees relative to the rear portion. Similarly, if the movable member is moved towards the fully retracted position, the front portion will tilt downwardly. Thus, the fork head of at least one fork disposed on the front portion will be oriented at an angle greater than 90 degrees relative to the rear portion. When the movable member is in the retracted position, the front portion may be tilted such that the prong of the at least one prong is positioned at an angle between 91 degrees and 95 degrees relative to the rear portion. Thus, the front portion of the load carrier may be pivoted to a position between +5 degrees and-5 degrees relative to the rear portion, wherein the zero position is when the front and rear portions are longitudinally parallel to each other.
The control unit on the forklift truck is suitably adapted to control the tilting means and thus the movement of the movable part between the different positions.
According to an aspect of the invention, the at least one contact member is movably mounted such that it is rotatable about an axis substantially parallel to the pivot axis. In this way, the at least one contact member will follow the front portion when the front portion is pivoted, and the contact area will be maintained regardless of the position of the front portion.
According to an aspect of the invention, the at least one contact member is elongated in a direction parallel to the rotation axis. Suitably, the at least one contact member is elongate along the axis of rotation. By having an elongated contact member, the contact surface of at least one contact member is increased. Thus, the contact area between the at least one contact member and the front portion is increased, which results in a more durable and more durable load carrier.
According to an aspect of the invention, the at least one contact member is movably mounted in a bracket fixedly arranged on the movable part of the tilting device. Thus, the carriage will not move relative to the movable part. The holder is suitably elongated in a direction parallel to the axis of rotation of the at least one contact member. The length of the stent may be substantially the same as the length of the at least one contact member. The tilting means are suitably configured such that when the at least one contact member is arranged in the holder, the flat surface of the at least one contact member extends beyond the holder in a direction towards the front. In this way only the contact surface of the contact member will abut the front part, not the bracket. Thus, the bracket partially surrounds the at least one contact member. By movably arranging the at least one contact member in the holder, the at least one contact member can be easily replaced without having to disassemble the entire tilting device. This facilitates assembly of the load carrier as well as maintenance and servicing. Alternatively, the tilting means comprises two or more contact members. All contact members are suitably movably mounted in the holder, and the combined length of the contact members may be substantially the same as the holder.
The holder preferably comprises a recess corresponding to the shape of the at least one contact member. In this way, the at least one contact member may be securely positioned in the holder. The stop member may be attached at the short end of the bracket so as to limit the movement of the at least one contact member in its longitudinal direction.
According to an aspect of the invention, the at least one contact member has a substantially semi-cylindrical shape. Thus, the rotation axis may coincide with a center line of the semi-cylindrical contact member. The at least one contact member is arranged such that the flat surface faces the front of the load carrier. Thus, the stent groove may also be semi-cylindrical in cross-section.
According to an aspect of the invention, the bracket comprises at least one recess adapted to arrange the bracket on the movable part of the tilting means. The recess thus faces away from the front of the load carrier. The recess is suitably adapted to receive an end of a movable member, such as a piston rod end. The shape of the recess suitably corresponds to the shape of the movable member so that the holder can be easily mounted on the movable member. In this way, the stent can be easily removed and replaced if desired. The tilting device may further comprise at least one guide pin attached to the bracket and the movable member. The guide pin is thus attached to the bracket on the side facing away from the front. The tilting means may comprise at least two guide pins, each attached to a respective end of the bracket. The guide pin prevents the bracket from rotating about the axis of the movable member.
The at least one contact member preferably comprises a plastics material. In this way, friction between the at least one contact member and the front portion may be minimized. By minimizing friction, the service life of the at least one contact member may be increased and thus a durable load carrier is achieved. The at least one contact member may comprise any material that produces an optimal friction between the at least one contact member and the front portion. The support may comprise metal, plastic, composite material or any durable material suitable for the purpose.
According to an aspect of the invention, the tilting means is arranged laterally centrally at the lower end of the rear portion. In case the tilting means comprise at least one tilting cylinder, the at least one tilting cylinder is suitably arranged on the rear horizontal section. Thus, the at least one contact member laterally centrally abuts the front portion such that the load of the front portion is evenly distributed over the at least one contact member. Alternatively, the tilting means comprise two tilting cylinders, each tilting cylinder being attached to at least one contact member. Thus, the two tilt cylinders are arranged adjacent to each other at the lower end of the rear portion. In this case, the holder holding the at least one contact member suitably comprises two recesses, so that the holder can be mounted on each of the respective piston rods. Alternatively, the tilting means comprises two tilting cylinders and two brackets. Thus, each bracket is attached to a respective piston rod, and each bracket holds at least one contact member.
According to an aspect of the invention, there is provided a forklift comprising at least one fork attached to a load carriage as referred to herein. The forklift thus comprises a mast to which the rear part of the load carrier is movably attached. The forklift may be any industrial truck comprising at least one fork, such as a forklift truck, a counterbalanced forklift, etc.
Other objects, advantages and novel features of the invention will become apparent to those skilled in the art from the following details and by practicing the invention.
Drawings
For a more complete understanding of the present invention, and for further objects and advantages thereof, reference is made to the following detailed description set forth in conjunction with the accompanying drawings, in which like reference numerals represent like items in the various figures, and wherein:
figure 1 schematically illustrates a forklift according to an embodiment of the invention;
FIG. 2 schematically illustrates an exploded view of a load carriage according to an embodiment of the invention;
figures 3a to 3c schematically show views of details of a load carrier according to an embodiment of the invention;
figure 4a schematically shows a side view of a load carriage in an idle position according to an embodiment of the invention;
figure 4b schematically shows a side view of a load carriage in an inclined position according to an embodiment of the invention; and
figure 4c schematically shows a side view of the load carrier in an inclined position according to an embodiment of the invention.
Detailed Description
Fig. 1 shows a side view of a forklift 10 according to an embodiment of the invention. The truck 10 includes at least one fork 12 attached to a load carriage 14. The load carriage 14 is movably arranged on the mast 16 such that the fork 12 can be moved along the mast 16. The forklift may include any number of forks 12 attached to a load carriage 14. The load carrier 14 is suitably configured as described in relation to figures 2 to 4. The truck 10 may be any truck that includes at least one fork 12, such as a power stacker truck, a counterbalanced stacker, or the like.
Fig. 2 shows an exploded view of a load carriage 14 for a forklift 10 according to an embodiment of the invention. The load carriage 14 comprises a front portion 20, a rear portion 22 and a tilting device 24, wherein the front portion 20 is adapted to carry at least one fork 12 and the rear portion 22 is adapted to be movably arranged on the mast 16 of the forklift 10, wherein the front portion 20 is movably attached to the rear portion 22 such that the front portion 20 is pivotable relative to the rear portion 22 about a pivot axis a, and wherein the tilting device 24 comprises a movable member 28' arranged for pivoting the front portion 20. The tilting device 24 further comprises at least one contact member 30 arranged on the movable part 28', wherein the at least one contact member 30 is movably mounted with respect to the movable part 28', and wherein the at least one contact member 30 comprises a flat contact surface 32. In this embodiment, the tilting means 24 are arranged at the rear portion 22 and further comprise at least one tilting cylinder 26 with a piston 28', wherein the piston 28' constitutes the movable part. The piston 28' is movable in a direction substantially perpendicular to the pivot axis a. A contact member 30 is arranged on the piston 28' for interaction with the front portion 20. Thus, the contact surface 32 is adapted to abut the front portion 20. The contact member 30 is suitably movably arranged with respect to the piston 28'. The fork 12 attached to the front portion 20 of the load carriage 14 may be tilted by tilting the front portion 20 of the load carriage 14 relative to the rear portion 22. Thus, when the tilting device 24 affects the front portion 20, the front portion 20 pivots about the pivot axis a. When tilting the front portion 20, the contact member 30 of the tilting device 24 may be affected by a large force from the load on the front portion 20. With a flat contact surface 32 according to the invention, the contact area between the front portion 20 and the contact member 30 is increased, and the contact member 30 is thus able to carry a larger force. By arranging the contact member 30 to be movable relative to the piston 28', the contact member 30 can adapt to the position of the front portion 20. The contact member 30 is suitably movably mounted such that it is rotatable about a rotational axis B substantially parallel to the pivot axis a. In this way, the contact member 30 will follow the front portion 20 when the front portion 20 pivots, and the contact area will be maintained regardless of the position of the front portion 20. Thus, the flat contact surface 32 will always be parallel to the front portion 20 of the load carrier 14. A durable and reliable load carrier 14 is thus achieved. This is further described in fig. 4b and 4 c.
The piston 28' of the tilt cylinder 26 suitably comprises a piston rod 28 "projecting towards the front portion 20 of the load carrier 14. Thus, the contact member 30 is suitably arranged on the piston rod end 29 facing the front portion 20. The contact member 30 is movably mounted in a holder 34 fixedly arranged on the piston rod 28 ". Thus, the bracket 34 will not move relative to the piston rod 28 ". The contact member 30 and the bracket 34 are further illustrated in fig. 3a to 3 c.
The front portion 20 of the load carrier 14 may include an upper horizontal section 40, a lower horizontal section 42, and two vertical side sections 44', 44 ". Each vertical side section 44', 44 "is connected to the ends of the upper horizontal section 40 and the lower horizontal section 42, respectively, such that a frame is formed. The side sections 44', 44 "extend longitudinally between the upper horizontal section 40 and the lower horizontal section 42. The longitudinal extension of the front portion 20 is in a direction parallel to the longitudinal extension of the side sections 44', 44 ". The longitudinal extension of the respective side sections 44', 44 "is perpendicular to the longitudinal extension of the upper and lower horizontal sections 40, 42. The rear portion 22 preferably comprises two parallel arranged vertical side sections 46', 46 ". The two side sections 46', 46 "are suitably connected to each other by a horizontal section 48 at the lower end of each vertical section 46', 46". The longitudinal extension of the rear portion 22 is in the vertical direction and parallel to the longitudinal extension of the post 16 adapted to arrange the rear portion 22. The longitudinal extension of the upper 40 and lower 42 horizontal sections of the front portion 20 is parallel to the longitudinal extension of the horizontal section 48 of the rear portion 22. The tilt cylinder 26 may be laterally centrally disposed at the lower end of the rear portion 22. Although only one tilt cylinder 26, one bracket 34 and one contact member 30 are shown, the tilt device 24 may include two tilt cylinders 26, each tilt cylinder 26 attached to the same bracket 34 and contact member 30, or each tilt cylinder attached to a different bracket 34 and contact member 30. Thus, two tilt cylinders 26 are suitably arranged adjacent to each other at the lower end 22 of the rear portion.
The load carrier 14 also includes a pivot means 50 connecting the front and rear portions 20, 22. The pivot means 50 may be arranged at the upper ends of the front and rear portions 20, 22, respectively, wherein the upper horizontal section 40 of the front portion 20 is connected to the pivot means 50. The pivot means 50 suitably comprises an elongate pivot portion 52 which is fixedly connected to the vertical side sections 46', 46 "of the rear portion 22. The pivot 52 extends longitudinally parallel to the upper and lower horizontal sections 40, 42 of the front portion 20. The pivot portion 52 suitably includes a semi-cylindrical top portion. The upper horizontal section 40 of the front portion 20 preferably includes a hook portion (not shown) depending from the semi-cylindrical top portion of the pivot portion 52. Thus, the front portion 20 pivots about the top portion of the pivot portion 52. Thus, the pivot axis a coincides with the centre line of the top portion. The pivot means 50 suitably comprises two displacement means 54, each arranged in a recess at each end of the elongate pivot portion 52. The displacement device 54 is movably arranged inside the pivot 52 and protrudes from the recess. The displacement device 54 may be controlled to move relative to the pivot portion 52 in the direction of the longitudinal extension of the pivot portion 52. The moving device 54 will then act on the upper horizontal section 40 of the front portion 20 to move the front portion 20 laterally on the top portion of the pivot 52. In this way, the front portion 20 can move laterally relative to the rear portion 22.
A control unit (not shown) on the truck 10 is suitably adapted to control the tilt cylinder 26 and, thus, the movement of the piston 28'. The control unit is suitably also adapted to control the side-shifting movement of the front portion 20.
Fig. 3a to 3c schematically show views of details of a load carrier 14 according to an embodiment of the invention. The load carrier 14 is suitably configured as described in relation to figures 1 and 2.
Fig. 3a shows a contact member 30 according to an embodiment of the invention. The contact member 30 is elongated in a direction parallel to the pivot axis a. The contact member 30 is suitably elongated along a rotation axis B about which the contact member 30 is rotatable. The contact member 30 has a substantially semi-cylindrical shape. Therefore, the rotation axis B coincides with the center line of the semicylindrical contact member 30. By having an elongated contact member 30, the contact surface 32 of the contact member 30 is increased. As a result, the contact area between the contact member 30 and the front portion 20 is increased, which results in a more durable and more durable load carrier 14. The contact member 30 preferably comprises a plastic material. In this way, friction between the contact member 30 and the front portion 20 may be minimized. By minimizing friction, the service life of the contact member 30 may be increased, and thus a durable load carrier 14 is obtained. The contact member 30 may comprise any material that produces an optimal frictional force between the contact member 30 and the front portion 20.
Figure 3b shows a bracket 34 of the load carrier 14 according to an embodiment of the invention. The bracket 34 is fixedly arranged on the piston 28 'such that the bracket 34 does not move relative to the piston 28'. Although the piston 28' is only mentioned herein as a movable part of the tilting device 24, it should be noted that any type of corresponding movable part of the tilting device may be applied. The bracket 34 is elongated in a direction parallel to the rotation axis B of the contact member 30. The length of the bracket 34 may be substantially the same as the length of the contact member 30. In the case where a plurality of contact members 30 are arranged in one holder 34, the length of the holder 34 may be substantially the same as the combined length of all the contact members 30. The bracket 34 includes a recess 60 corresponding to the shape of the contact member 30. Accordingly, the cross-section of the groove 60 may also be semi-cylindrical. In this way, the contact member 30 may be securely positioned in the holder 34. The bracket 34 further comprises at least one recess 62 adapted to arrange the bracket 34 on the tilt piston 28'. Thus, the recess 62 faces away from the front 20 of the load carrier 14. The recess 62 is suitably adapted to receive the piston rod end 29. The shape of the recess 62 suitably corresponds to the shape 29 of the piston rod end, so that the holder 34 can be easily mounted on the piston rod 28 ". In this way, the holder 34 can be easily removed and replaced, if desired. The tilting device 24 may also include at least one guide pin 64 attached to the bracket 34 and the piston 28'. Two guide pins 64 are shown herein. Thus, the guide pin 64 is attached to the bracket 34 on the side facing away from the front portion 20. Guide pin 64 prevents bracket 34 from rotating about the axis of piston rod 28 ". The support 34 suitably comprises metal, plastic, composite material, or the like.
Fig. 3c shows the contact member 30 depicted in fig. 3a movably arranged in the holder 34 depicted in fig. 3 b. The holder 34 and the contact member 30 are suitably configured such that the flat contact surface 32 of the contact member 30 extends beyond the holder 34 in a direction towards the front portion 20 when the contact member 30 is arranged in the holder 34. In this way, only the contact surface 32 of the contact member 30 will abut the front portion 20, not the bracket 34. Thus, the bracket 34 partially surrounds the contact member 30. By movably arranging the contact member 30 in the holder 34, the contact member 30 can be easily replaced without disassembling the entire tilting device 24. This facilitates assembly of the load carrier 14 as well as maintenance and servicing. The stop member 66 may be attached at the short end of the bracket 34 so as to limit the movement of the contact member 30 in its longitudinal direction. The stop member 66 may be a plate attached to the bracket 34 by means of fasteners.
Fig. 4a, 4b and 4c show side views of the load carrier 14 in different positions. The load carrier 14 is suitably configured as described in any of figures 1-3. The movable part 28 'of the tilting means 24 may be a piston 28' of the tilting cylinder 26. The piston 28' of the tilting means 24 is movable in a direction substantially perpendicular to the pivot axis a and substantially perpendicular to the longitudinal extension of the rear portion 22. The longitudinal extension of the rear portion 22 is parallel to the longitudinal extension of the mast 16 to which the load carrier 14 is mounted.
FIG. 4a shows the load carriage 14 when the piston 28' is in the idle position, the front portion 20 is then in a substantially vertical position relative to a surface on which the truck 10 is operating, the front portion 20 is thus positioned substantially perpendicular to the longitudinal extension of the piston rod 28 ", the front portion 20 and the rear portion 22 are thus substantially parallel to each other in the longitudinal direction, the flat contact surface 32 of the contact member 30 is parallel to the front portion 20, such that the prong of at least one of the forks 12 disposed on the front portion 20 will be positioned at an angle α relative to the rear portion 22, wherein the angle α is substantially 90 degrees, when the piston 28' is moved in a direction towards the front portion 20, the contact member 30 pressing against the front portion 20 will pivot the front portion 20 about the pivot axis A, and the front portion 20 will therefore tilt upwardly, the contact member 30 movably disposed in the bracket 34 will rotate about the rotation axis B, and the flat contact surface 32 will remain in contact with the front portion 20, which is shown in FIG. 4B, such that the head of at least one fork 12 will be positioned at an angle α relative to the rear portion 28' when the piston 28 is in the position, such that the fork 20 can be positioned at an angle 3685 relative to the rear portion 3685.
Similarly, if the plunger 28 'is moved toward the fully retracted position, the front portion 20 will tilt downward, which is shown in FIG. 4 c. thus, the prongs of at least one of the forks 12 disposed on the front portion 20 will be positioned at an angle α greater than 90 degrees relative to the rear portion 22. when the plunger 28' is in the retracted position, the front portion 20 may tilt such that the prongs of at least one of the forks 12 are positioned at an angle α between 91 degrees and 95 degrees relative to the rear portion 22.
Claims (10)
1. A load carriage (14) for a forklift (10), comprising: a front part (20), a rear part (22) and a tilting device (24), wherein the front part (20) is adapted to carry at least one fork (12) and the rear part (22) is adapted to be movably arranged on a mast (16) of a forklift (10), wherein the front part (20) is movably attached to the rear part (22) such that the front part (20) is pivotable relative to the rear part (22) about a pivot axis (a), and wherein the tilting device (24) comprises a movable part (28') arranged for pivoting the front part (20), characterized in that the tilting device (24) further comprises at least one contact member (30) arranged on the movable part (28'), wherein the at least one contact member (30) is movably mounted relative to the movable part (28') such that the at least one contact member is movable about a rotation axis substantially parallel to the pivot axis (a) (B) -a rotation, and wherein the at least one contact member (30) comprises a flat contact surface (32), and wherein the tilting means (24) is arrangeable at the rear portion (22) or at the front portion (20), the flat contact surface (32) of the at least one contact member (30) being adapted to interact with the front portion (20) when the tilting means (24) is arranged at the rear portion (22), and the flat contact surface (32) of the at least one contact member (30) being adapted to interact with the rear portion (22) when the tilting means (24) is arranged at the front portion (20).
2. The load carrier according to claim 1, wherein said at least one contact member (30) is elongated in a direction parallel to said rotation axis (B).
3. The load carrier of claim 1, wherein said at least one contact member (30) is movably mounted on a bracket (34) fixedly arranged on said movable part (28') of said tilting means (24).
4. A load carrier according to claim 3, wherein said bracket (34) comprises a recess (60) corresponding to the shape of said at least one contact member (30).
5. A load carrier according to claim 3, wherein at least one recess (62) is included in said bracket (34), said recess being adapted to arrange said bracket (34) on said movable part (28').
6. The load carrier of claim 1, wherein said tilting means (24) comprises at least one tilting cylinder (26) having a piston (28'), wherein said piston (28') constitutes said movable part on which said at least one contact member (30) is arranged.
7. The load carrier of claim 1, wherein said at least one contact member (30) has a substantially semi-cylindrical shape.
8. A load carrier according to claim 1, wherein said at least one contact member (30) comprises a plastics material.
9. A load carrier according to claim 1, wherein said front portion (20) is laterally movable relative to said rear portion (22).
10. A forklift (100) comprising at least one fork (12), characterized in that the at least one fork (12) is attached to a load carriage (14) according to any one of claims 1 to 9.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP15197024.1 | 2015-11-30 | ||
| EP15197024.1A EP3173372B1 (en) | 2015-11-30 | 2015-11-30 | A load carrier for a forklift truck |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107021436A CN107021436A (en) | 2017-08-08 |
| CN107021436B true CN107021436B (en) | 2020-03-17 |
Family
ID=54707710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611078803.4A Active CN107021436B (en) | 2015-11-30 | 2016-11-29 | A load bracket and fork truck for fork truck |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP3173372B1 (en) |
| CN (1) | CN107021436B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102019006140A1 (en) * | 2019-08-30 | 2021-03-04 | Kaup GmbH & Co. KG Gesellschaft für Maschinenbau | Device for transporting a cargo and method |
| JP7364319B2 (en) * | 2021-08-19 | 2023-10-18 | 三菱ロジスネクスト株式会社 | forklift |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB774481A (en) * | 1952-05-15 | 1957-05-08 | John Reginald Sharp | Improvements in or relating to fork or like trucks |
| GB1151889A (en) * | 1965-08-17 | 1969-05-14 | Eaton Yale & Towne | Industrial Truck. |
| EP0386344A1 (en) * | 1989-03-08 | 1990-09-12 | Jungheinrich Aktiengesellschaft | Lifting carriage |
| DE4315293A1 (en) * | 1992-05-08 | 1993-11-11 | Linde Ag | Load lifting carriage for industrial lift truck |
| CN201545670U (en) * | 2009-10-23 | 2010-08-11 | 合肥搬易通科技发展有限公司 | Inclinable fork arm carrier with sideshift function |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2266700B (en) | 1992-05-08 | 1995-06-21 | Lansing Linde Ltd | Industrial lift trucks and load lifting carriages therefor |
-
2015
- 2015-11-30 EP EP15197024.1A patent/EP3173372B1/en active Active
-
2016
- 2016-11-29 CN CN201611078803.4A patent/CN107021436B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB774481A (en) * | 1952-05-15 | 1957-05-08 | John Reginald Sharp | Improvements in or relating to fork or like trucks |
| GB1151889A (en) * | 1965-08-17 | 1969-05-14 | Eaton Yale & Towne | Industrial Truck. |
| EP0386344A1 (en) * | 1989-03-08 | 1990-09-12 | Jungheinrich Aktiengesellschaft | Lifting carriage |
| DE4315293A1 (en) * | 1992-05-08 | 1993-11-11 | Linde Ag | Load lifting carriage for industrial lift truck |
| CN201545670U (en) * | 2009-10-23 | 2010-08-11 | 合肥搬易通科技发展有限公司 | Inclinable fork arm carrier with sideshift function |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3173372B1 (en) | 2019-10-16 |
| CN107021436A (en) | 2017-08-08 |
| EP3173372A1 (en) | 2017-05-31 |
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