CN116462133A

CN116462133A - Limiting device for fork and fork

Info

Publication number: CN116462133A
Application number: CN202210634995.1A
Authority: CN
Inventors: 陈卓远; 王少参; 李沛阳; 秦爱中; 刘晓永; 戴宗妙; 陈洪
Original assignee: 713th Research Institute of CSIC
Current assignee: 713th Research Institute of CSIC
Priority date: 2022-06-06
Filing date: 2022-06-06
Publication date: 2023-07-21

Abstract

The invention provides a limiting device for a fork and the fork, which belong to the technical field of the fork. The limiting device provided by the invention has a simple structure and high reliability, and can effectively solve the technical problems of complex algorithm and low reliability of a device for limiting the warehouse pallet on the fork in the prior art.

Description

Limiting device for fork and fork

Technical Field

The invention relates to a limiting device for a fork and the fork, and belongs to the technical field of forks.

Background

In the lifting and storage industry, a pallet fork is a common mechanism for lifting and moving goods by forking the goods. At present, in a standard automatic warehouse, goods are generally placed on a special warehouse tray, a fork groove into which a goods supply fork extends is formed in the bottom of the warehouse tray, when the goods fork is used, a fork arm of the goods fork needs to be controlled to extend into the fork groove and upwards fork the warehouse tray, and due to control errors when the fork arm is controlled, a mechanical gap exists between the fork arm and the warehouse tray when the warehouse tray is forked, so that a certain error exists in the position of the warehouse tray on the fork arm when the warehouse tray is forked. Along with the movement of the fork arms, the error between the warehouse tray and the fork arms can be gradually accumulated and increased, and finally, the goods are overturned.

To solve the above problem, in the prior art, a photoelectric switch or a photoelectric encoder is usually disposed on the pallet fork, so as to ensure that the position of the warehouse pallet on the pallet fork is kept unchanged. However, the scheme needs to be applied to a plurality of electronic components, and signals of the electronic components are connected to a controller, so that a control algorithm is complex and low in reliability.

Disclosure of Invention

The invention aims to provide a limiting device for a pallet fork, which solves the technical problems of complex algorithm and low reliability of a device for limiting a storage tray on the pallet fork in the prior art. Meanwhile, the invention also provides a fork for solving the problems.

The limiting device for the fork adopts the following technical scheme:

this stop device for fork, including the installing support that is used for installing on the yoke, install the limit structure who is used for carrying out spacing to the storage tray on the installing support, be equipped with slope guiding portion on the limit structure, slope guiding portion is used for setting towards the storage tray to can remove again on the yoke under the action of gravity when making the storage tray remove on the slope guiding portion.

The beneficial effects are that: the invention provides a limiting device for a fork, which is characterized in that an inclined guide part is utilized to limit a storage tray in a pioneering way, when the limiting device for the fork is used, the limiting device for the fork is arranged on a fork arm through a mounting bracket, when the fork arm is used for forking the storage tray, if the storage tray is moved onto the inclined guide part of a limiting structure, the storage tray and corresponding goods can be moved onto the fork arm again through the inclined guide part under the action of gravity, so that the increase of errors between the storage tray and the fork arm is effectively avoided; compared with the prior art that the limiting device adopts a photoelectric switch or a photoelectric encoder, the limiting device provided by the invention has the advantages of simple structure and higher reliability.

Further, the inclined guide portion includes rolling bodies for rolling contact with the warehouse tray to reduce friction between the inclined guide portion and the warehouse tray.

The beneficial effects are that: the arrangement of the rolling bodies can reduce friction force between the inclined guide part and the warehouse tray, so that the warehouse tray can be moved onto the fork arm more easily.

Further, the rolling bodies are cylinders, and a plurality of the cylinders are arranged at intervals along the oblique direction of the oblique guide portion.

The beneficial effects are that: the cylinder has a simple structure and is more convenient to arrange; the cylinder is arranged a plurality of, and the result of use is better.

Further, limit structure includes supporting baseplate, the last interval arrangement of supporting baseplate has two at least limiting plates, is equipped with the incline limit that is used for towards the warehouse tray setting on the limiting plate, and the cylinder rotates the assembly on the incline limit.

The beneficial effects are that: the limiting structure consists of a plate structure, so that the weight of the limiting device can be effectively reduced, and the bearing capacity of the fork arm is reduced.

Further, the limiting plate is right triangle in shape.

The beneficial effects are that: simple structure and convenient processing.

Further, the installing support includes two parallel arrangement's bracing piece, and two bracing pieces are used for the division to put in the upside of yoke and extend along the extending direction of yoke and arrange, limit structure includes the supporting shoe that corresponds with two bracing pieces, and the bracing piece passes through fixed pin group with the supporting shoe and is connected fixedly, is equipped with the pinhole group that supplies the fixed pin group to pass on bracing piece and the supporting shoe.

The beneficial effects are that: the mounting bracket comprises two support rods which are parallel and are arranged along the extending direction of the fork arms, so that the support of the mounting bracket is more stable; the limiting structure is fixedly connected with the supporting rod pin through the supporting block, and the connection is more convenient.

Further, the side of the supporting rod is a plane for being attached to the supporting block.

The beneficial effects are that: the arrangement can enable the pin holes on the support rod and the support block to be aligned more easily, and meanwhile, the connection between the support rod and the support block can be fastened more firmly.

Further, the support rod is provided with a plurality of pin hole groups, and each pin hole group is arranged at intervals along the extending direction of the support rod, so that the installation position of the support block on the support rod can be conveniently adjusted.

The beneficial effects are that: the position of the limiting structure on the mounting bracket can be adjusted according to the size of the warehouse pallet, so that the warehouse pallet is more flexible to use.

The pallet fork adopts the following technical scheme:

this stop device for fork, including fork load platform and yoke, install stop device on the yoke, stop device is including being used for installing the installing support on the yoke, install the limit structure that is used for carrying out spacing to the storage tray on the installing support, be equipped with the slope guiding portion on the limit structure, the slope guiding portion is used for setting towards the storage tray to can remove again to the yoke under the action of gravity when making the storage tray remove to on the slope guiding portion.

The beneficial effects are that: the invention provides a fork, which is provided with a limiting device, wherein the limiting device openly provides that an inclined guiding part is used for limiting a storage tray; compared with the prior art that the limiting device adopts a photoelectric switch or a photoelectric encoder, the limiting device provided by the invention has the advantages of simple structure and higher reliability.

Further, the limiting plate is right triangle in shape.

The beneficial effects are that: simple structure and convenient processing.

Further, two limiting devices for the fork are arranged at intervals along the length direction of the fork arm, and an accommodating space for accommodating the storage tray is formed between the limiting devices for the two forks.

The beneficial effects are that: the spacing effect of arranging like this is better.

Drawings

FIG. 1 is a front view of a pallet fork of the present invention;

FIG. 2 is a side view of FIG. 1;

FIG. 3 is a top view of FIG. 1;

FIG. 4 is a schematic view of the structure of the stop device in the pallet fork of the present invention;

fig. 5 is a front view of fig. 4;

FIG. 6 is a side view of FIG. 4;

fig. 7 is a top view of fig. 4.

The names of the corresponding components in the figures are:

1. a load-bearing platform; 2. a fork arm; 3. a first limiting device; 31. a support base plate; 32. a limiting plate; 33. a cylinder; 34. a support block; 35. a support rod; 36. a pin hole; 37. a fixed pin group; 38. a fixing pin; 4. a second limiting device; 5. and driving the motor.

Detailed Description

The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the particular embodiments described herein are illustrative only and are not intended to limit the invention, i.e., the embodiments described are merely some, but not all, of the embodiments of the invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present invention.

It should be noted that in the present embodiment, relational terms such as "first" and "second" and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the phrase "comprising one … …" or the like, as may occur, does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the depicted element.

In the description of the present invention, the terms "mounted," "connected," "coupled," and "connected," as may be used broadly, and may be connected, for example, fixedly, detachably, or integrally, unless otherwise specifically defined and limited; can be mechanically or electrically connected; either directly, indirectly through intermediaries, or in communication with the interior of the two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art in specific cases.

In the description of the present invention, unless explicitly stated and limited otherwise, the term "provided" as may occur, for example, as an object of "provided" may be a part of a body, may be separately arranged from the body, and may be connected to the body, and may be detachably connected or may be non-detachably connected. The specific meaning of the above terms in the present invention can be understood by those skilled in the art in specific cases.

The present invention is described in further detail below with reference to examples.

Example 1 of the fork in the present invention:

as shown in fig. 1, 2 and 3, the pallet fork comprises a carrying platform 1, and a fork arm 2 and a driving motor 5 for driving the fork arm 2 to act are arranged on the carrying platform 1. And the fork arm 2 is provided with a limiting device for limiting the storage tray when the fork arm 2 forks the storage tray. The limiting device comprises a mounting bracket and a limiting structure arranged on the mounting bracket, and an inclined guiding part for limiting the storage tray is arranged on the limiting structure.

In this embodiment, as shown in fig. 4, 5 and 6, the limiting structure includes a supporting base plate 31 and limiting plates 32, the supporting base plate 31 is a rectangular plate, the limiting plates 32 are right-angled triangles and two in number, and the two limiting plates 32 are arranged at intervals along the length direction of the supporting base plate 31. The inclined guiding part comprises inclined edges on the two limiting plates 32, and further comprises rolling bodies, wherein the rolling bodies are cylinders 33, the cylinders 33 are arranged at intervals along the extending direction of the inclined edges, the extending direction of the inclined edges is consistent with the inclined direction of the inclined guiding part, two ends of each cylinder 33 are respectively rotationally assembled on the corresponding inclined edges on the two limiting plates 32, and the rotating axes of each cylinder 33 are parallel to each other and extend along the length direction of the supporting bottom plate 31.

In this embodiment, as shown in fig. 4 and 7, the mounting bracket includes two support rods 35 arranged in parallel, and the two support rods 35 are disposed on the upper side of the yoke 2 and are arranged to extend in the extending direction of the yoke 2. The limiting structure further comprises two supporting blocks 34, and the number of the supporting blocks 34 is two to respectively correspond to the two supporting rods 35. In order to make the support bar 35 and the support block 34 fit, the side surface of the support bar 35 is a plane. The supporting block 34 and the supporting rod 35 are fixedly connected through a fixing pin group 37, as shown in fig. 4 and 5, the fixing pin group 37 comprises three fixing pins 38, and the supporting rod 35 and the supporting block 34 are respectively provided with a pin hole group for the fixing pin group 37 to pass through, and each pin hole group comprises three pin holes 36.

In this embodiment, in order to facilitate adjusting the installation position of the limiting structure on the support rod 35, multiple groups of pin hole groups on the support rod 35 are arranged along the extending direction of the support rod 35. When the position of the limiting structure needs to be adjusted, the fixing pin group 37 is taken out of the corresponding pin hole groups on the supporting rod 35 and the supporting block 34, then the supporting block 34 is moved to the target position, the pin hole groups on the supporting block 34 are aligned with the pin hole groups on the target position of the supporting rod 35, and finally the fixing pin group 37 passes through the supporting block 34 and the pin hole groups on the supporting rod 35 to be fixed.

In this embodiment, in order to improve the adjustment accuracy, the pin holes 36 in each pin hole group on the support rod 35 are uniformly arranged at intervals along the extending direction of the support rod 35, so that any adjacent three pin holes 36 can form a pin hole group.

In this embodiment, as shown in fig. 1, 2 and 3, two limiting devices are arranged at intervals in the extending direction of the yoke 2, and the two limiting devices are a first limiting device 3 and a second limiting device 4, which have the same structure.

In this embodiment, when the limiting device is mounted on the yoke 2, the two support rods 35 are welded and fixed on the upper side of the yoke 2, then the pin holes 36 on the two limiting blocks are aligned with the pin holes 36 on the two support rods 35 at the target mounting positions, and finally the fixing pins 38 respectively pass through the limiting blocks and the pin holes 36 of the support rods 35 to fix the limiting structure on the support rods 35. It should be noted that, as shown in fig. 3, when the limiting structure is installed, it is required to ensure that the inclined guiding portions on the first and second limiting devices are arranged in opposite directions, so that a storage tray accommodating space is formed between the first and second limiting devices.

When the pallet fork provided by the embodiment moves, if the pallet fork moves to the inclined guiding part relative to the fork arm 2, the pallet fork and corresponding goods can move to the fork arm 2 again through the inclined guiding part under the action of gravity, so that the automatic adjustment of the position of the pallet fork is realized. The limiting device on the fork of the embodiment has the characteristics of simple structure and high reliability.

In other embodiments, only one stop is arranged along the length of the yoke, which stop is arranged at the outer end of the yoke, i.e. the corresponding end of the fork when the warehouse pallet is being picked up. In addition, the fork arm is also provided with a limiting plate, and an accommodating space for accommodating the storage tray is formed between the limiting plate and the limiting device.

In other embodiments, only one set of pin hole sets is provided on the support bar, and the mounting position of the support block on the support bar is not adjustable.

In other embodiments, the side of the support bar is an arcuate surface, and when the support bar is connected to the support block, a gap exists between the support bar and the support block.

In other embodiments, the mounting bracket only comprises a supporting platform, the supporting platform is of a frame structure, and a supporting bottom plate of the limiting structure is placed on the supporting platform and welded and fixed with the supporting platform.

In other embodiments, the limiting plate is right trapezoid in shape.

In other embodiments, three limiting plates are arranged on the supporting bottom plate at intervals, and the inclined guide part comprises inclined edges on the three limiting plates.

In other embodiments, the limiting structure only comprises a limiting block, the limiting block is a triangular prism with a right triangle cross section, and the inclined guiding part comprises an inclined surface on the limiting block.

In other embodiments, the rolling bodies are spheres, grooves for installing the spheres are formed in the inclined edges of the limiting plates, and the spheres are assembled in the grooves in a rolling mode.

In other embodiments, the angled guide portion does not include rolling elements, and the angled guide portion includes only angled edges on the limiting plate. When the friction force between the inclined guide part and the warehouse tray is required to be reduced, the inclined edge on the limiting plate can be polished.

In other embodiments, the pin holes in the same pin hole set are spaced apart in the up-down direction.

In the embodiment of the limiting device for the fork, disclosed by the invention:

in this embodiment, the structure of the limiting device for the fork adopts the structure of the limiting device for the fork in embodiment 1, and will not be described herein.

In other embodiments, the structure of the limiting device for the fork adopts the structure of the limiting device in any other embodiment of the fork, and the description thereof is omitted.

The above description is only a preferred embodiment of the present invention, and the patent protection scope of the present invention is defined by the claims, and all equivalent structural changes made by the specification and the drawings of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a stop device for fork, its characterized in that, including the installing support that is used for installing on yoke (2), install the limit structure who is used for carrying out spacing to the storage tray on the installing support, be equipped with slope guiding portion on the limit structure, slope guiding portion is used for setting towards the storage tray to can remove again on yoke (2) under the action of gravity when making the storage tray remove on the slope guiding portion.

2. The spacing device for forks according to claim 1, characterized in that said inclined guide portion comprises rolling bodies for rolling contact with the warehouse pallet to reduce friction between the inclined guide portion and the warehouse pallet.

3. The spacing device for forks according to claim 2, characterized in that the rolling bodies are cylinders (33), the cylinders (33) being arranged in a plurality at intervals in the direction of inclination of the inclined guide portion.

4. A pallet fork stop device according to claim 3, characterized in that the stop structure comprises a supporting bottom plate (31), at least two stop plates (32) are arranged on the supporting bottom plate (31) at intervals, inclined edges for being arranged towards the warehouse pallet are arranged on the stop plates (32), and the cylinders (33) are assembled on the inclined edges in a rotating mode.

5. The spacing device for forks according to claim 4, characterized in that the spacing plate (32) has the shape of a right triangle.

6. The spacing device for a fork according to any one of claims 1-5, characterized in that the mounting bracket comprises two parallel arranged support rods (35), the two support rods (35) are used for being arranged on the upper side of the fork arm (2) in a separated mode and extending along the extending direction of the fork arm (2), the spacing structure comprises support blocks (34) corresponding to the two support rods (35), the support rods (35) are fixedly connected with the support blocks (34) through fixing pin groups (37), and pin hole groups for the fixing pin groups (37) to pass through are arranged on the support rods (35) and the support blocks (34).

7. The spacing device for forks according to claim 6, characterized in that the side of the support bar (35) is plane for a conforming arrangement with the support block (34).

8. The spacing device for forks according to claim 6, wherein a plurality of pin hole sets are provided on the support rod (35), and each pin hole set is arranged at intervals along the extending direction of the support rod (35) so as to facilitate adjustment of the mounting position of the support block (34) on the support rod (35).

9. A fork comprising a fork carrying platform (1) and a fork arm (2), wherein a limiting device is arranged on the fork arm (2), and the limiting device is characterized in that the limiting device for the fork is any one of claims 1 to 8.

10. The fork according to claim 9, wherein two fork limiting devices are arranged at intervals along the length direction of the fork arm (2), and a storage tray accommodating space is formed between the two fork limiting devices.