High-rigidity extension fork arm structure

Abstract

The utility model provides a high-rigidity stretching fork arm structure which is provided with a driving table, a plurality of stretching tables and fork arms which are sequentially and mutually overlapped and connected in a sleeved mode in the stretching direction, and the driving table, the stretching tables and the fork arms are respectively formed by connecting two supporting side walls on two opposite side edges of a carrier plate in a lap joint mode. When the driving table, the stretching tables and the fork arms are driven by a driving device to stretch, the supporting side walls can stretch outwards in a protruding mode and have a suspension distance, and the height of the supporting side wall of the driving table is larger than that of the supporting side wall of the stretching table located on the innermost side, so that excellent structural rigidity is provided, and the sagging amount of the stretching table in the load-bearing stretching process can be greatly reduced.

Description

Technical Field

[0001] The utility model relates to a telescopic fork arm mechanism of an automated warehousing system, in particular to a high-rigidity telescopic fork arm structure. Background Art

[0002] Traditional warehousing work is limited by manpower and has poor work efficiency, and has gradually been replaced by an automated warehousing system. The automated warehousing system mainly controls the telescopic fork arm mechanism of its material taking device through a computer to automatically perform the work of loading and unloading goods. Therefore, not only can the storage space be fully utilized, but also the management efficiency of the warehouse can be improved.

[0003] However, when the telescopic fork arm mechanism of the existing automated warehousing system is extended and suspended, it will be affected by gravity and sag. This situation is more obvious in the telescopic fork arm mechanism with a multi-fold extension stroke. The excessive sag not only easily causes wear and damage between various mechanisms, but also leads to inaccurate material taking displacement stroke. Therefore, it is necessary to expand the rack to provide a material taking space for the telescopic fork arm mechanism to extend, in order to avoid collision between the telescopic fork arm mechanism and the rack. However, in this way, there will be a problem of wasting warehouse space.

[0004] In view of this, how to improve the above problems is the primary issue to be solved by the utility model. Summary of the Utility Model

[0005] The main purpose of the utility model is to provide a high-rigidity telescopic fork arm structure, which has excellent structural rigidity, can greatly reduce the sag of the fork arm structure when it is loaded and extended and suspended, and thereby ensure the accuracy of its material taking displacement stroke, not only can reduce the wear between components, but also can make full use of the rack space to achieve the effect of not wasting warehouse space.

[0006] To achieve the above object, the utility model provides a high-rigidity telescopic fork arm structure, which includes:

[0007] A driving platform, having a first carrier plate, and two first support side walls are arranged in parallel along two opposite sides of the first carrier plate;

[0008] A telescopic arm group is composed of a plurality of telescopic platforms stacked and sleeved with each other along a telescopic direction. Each telescopic platform has a second carrier plate, and two second support side walls parallel to the two first support side walls are respectively arranged along two opposite sides of each second carrier plate. The telescopic arm group is slidably connected to the inner side surfaces of the two first support side walls with the two second support side walls of the outermost telescopic platform.

[0009] a fork arm having a third carrier plate for receiving goods, and two third supporting side walls which are arranged parallel to the two second supporting side walls of each extension platform are connected along two opposite sides of the third carrier plate, and the fork arm is slidably connected to the inner side surfaces of the two second supporting side walls of the innermost extension platform of the extension arm group with the two third supporting side walls, and a driving device is used to drive the driving platform, the extension arm group and the fork arm to extend in the extension direction at the same time, so that the two first supporting side walls, the two second supporting side walls of each extension platform and the two third supporting side walls can protrude outwards respectively and have a suspended distance;

[0010] Among them, the two first supporting side walls, the two second supporting side walls of each extension platform and the two third supporting side walls are all plate-shaped and respectively have a height, a width and a length extending in the extension direction. The two first supporting side walls are the same length as the two second supporting side walls of each extension platform, and the height of the two first supporting side walls is greater than the height of the two second supporting side walls of the extension arm group located at the innermost extension platform.

[0011] As a preferred embodiment of the above technical solution, preferably, the two first supporting side walls are respectively connected to the upward end surface of the first carrier plate through a plurality of locking pieces, and the two first supporting side walls and the two opposite side edges of the first carrier plate are aligned with each other, and the driving platform is relatively slidably connected to the direct rail groove of a fixed supporting end with the rollers on the two first supporting side walls, so that the driving platform can slide and extend along the extension direction relative to the fixed supporting end.

[0012] As a preferred embodiment of the above technical solution, preferably, the two second supporting side walls of each spreading platform are also relatively connected to the upward end surface of the second carrier plate through a plurality of locking pieces, and the two second supporting side walls of each spreading platform are aligned with the two opposite side edges of the second carrier plate, and the spreading arm group is relatively slidably connected to the linear rail grooves recessed on the opposite inner sides of the two first supporting side walls with rollers located on the two second supporting side walls of the outermost spreading platform, so that each spreading platform of the spreading arm group can slide and extend relative to the driving platform.

[0013] As a preferred embodiment of the above technical solution, preferably, the two third supporting side walls are relatively connected to the downward end surface of the third carrier plate through a plurality of locking pieces, and the two third supporting side walls are flush with the two opposite side edges of the third carrier plate, and the fork arm can be slidably engaged with the rollers arranged on the relatively inner side surfaces of the two second supporting side walls of the innermost extension platform of the extension arm group through the linear rail grooves recessed on the outer peripheral surfaces of the two third supporting side walls, so that the fork arm can slide and extend relative to the extension arm group.

[0014] As a preferred embodiment of the above technical solution, preferably, the suspended distances of the two first supporting side walls, the two second supporting side walls of each extension platform and the two third supporting side walls are respectively one half of their lengths.

[0015] Preferably, as an optimization of the above technical solution, the height of the two second support side walls of the outermost stretching table of the stretching arm group is greater than the height of the two second support side walls of the innermost stretching table.

[0016] Preferably, as an optimization of the above technical solution, the height of the two second support side walls of the innermost stretching table of the stretching arm group is equal to the height of the two third support side walls.

[0017] Preferably, as an optimization of the above technical solution, the widths of the two second support side walls and the two third support side walls of each stretching table are the same.

[0018] The beneficial effects that the present utility model can provide are as follows: Since the cross-sections of its driving platform, stretching arm group and fork arm are respectively generally in a C shape like a C-shaped steel, when the driving platform, stretching arm group and fork arm are sequentially overlapped and sleeved with each other, characteristics of excellent cross-section performance, high strength and good earthquake resistance can be provided. And further by controlling the suspended distance of each support side arm and matching with the setting of conditions such as the height, width and length of each support side arm, the structural rigidity of each support side wall can be further ensured, so as to greatly reduce the sag amount of the fork arm structure when it is stretched and suspended under load.

[0019] The above objects and advantages of the present utility model can be deeply understood from the following detailed description of the selected embodiments and the drawings. Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 It is a schematic external view of the present utility model.

[0022] Figure 2 It is an exploded schematic view of the present utility model.

[0023] Figure 3 It is a schematic cross-sectional structure view of the present utility model.

[0024] Figure 4 It is a schematic view of the retracted state of the present utility model.

[0025] Figure 5 It is a schematic view of the structure of the present utility model when it is stretched.

[0026] Among them, there are a driving platform 11; a first carrier plate 12; a first supporting side wall 13; a locking member 131; a roller 132; a linear rail groove 133; an extension arm group 21; extension platforms 22a, 22b, 22c; rollers 221; a linear rail groove 222; a second carrier plate 23; a second supporting side wall 24; a locking member 241; a fork arm 31; a third carrier plate 32; a third supporting side wall 33; a locking member 331; a linear rail groove 332; a driving device 41; a fixed supporting end 51; an extension direction X; a suspension distance D; a height H; a width B; a length L; a load P. Detailed implementation manners

[0027] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts shall fall within the protection scope of the present invention.

[0028] Please refer to Figures 1 to 5 , which shows a high-rigidity extension fork arm structure provided by the present invention, which is mainly composed of a driving platform 11, an extension arm group 21 and a fork arm 31 sequentially stacked and sleeved with each other, wherein:

[0029] The driving platform 11 has a first carrier plate 12 in the shape of a rectangular flat plate, and two first supporting side walls 13 arranged in parallel are connected to two opposite sides of the first carrier plate 12. In this embodiment, the two first supporting side walls 13 are respectively connected to the upward end surface of the first carrier plate 12 through a plurality of locking members 131, and the two first supporting side walls 13 are flush with the two opposite sides of the first carrier plate 12. The driving platform 11 relatively slides on the rollers 132 on the two first supporting side walls 13 in a linear rail groove (not shown in the figure) of a fixed supporting end 51, so that the driving platform 11 can slide and extend along an extension direction X relative to the fixed supporting end 51.

[0030] The extension arm group 21 is composed of a plurality of extension platforms overlapped and sleeved along the extension direction X. In this embodiment, the extension arm group 21 is composed of three extension platforms 22a, 22b, and 22c overlapped and sleeved. The extension platforms 22a, 22b, and 22c are connected to each other through rollers 221 and linear rail grooves 222 and are slidably sleeved together. Each extension platform 22a, 22b, and 22c has a second carrier plate 23, and two second support side walls 24 are respectively connected along the two opposite sides of each second carrier plate 23 and are arranged parallel to the two first support side walls 13. The two second supporting side walls 24 are similarly connected to the upward end surface of the second carrier plate 23 through a plurality of locking pieces 241, so that the two second supporting side walls 24 of each extension platform 22a, 22b, 22c and the two opposite side edges of its second carrier plate 23 are aligned with each other, and the extension arm assembly 21 is relatively slidably connected to the linear rail grooves 133 recessed on the opposite inner side surfaces of the two first supporting side walls 13 with the rollers 221 located on the two second supporting side walls 24 of the outermost extension platform 22a, so that each extension platform 22a, 22b, 22c of the extension arm assembly 21 can slide and extend along the extension direction X relative to the driving platform 11.

[0031] The fork arm 31 has a third carrier plate 32 for receiving goods, and two third supporting side walls 33 are connected along the two opposite sides of the third carrier plate 32 and are arranged parallel to the two second supporting side walls 24 of each extension platform 22a, 22b, 22c. The two third supporting side walls 33 are connected to the downward end surface of the third carrier plate 32 through a plurality of locking pieces 331, and the two third supporting side walls 33 and the two opposite sides of the third carrier plate 32 are mutually aligned. The fork arm 31 can be slidably connected to the extension arm group 21 by the linear rail groove 332 recessed on the outer circumferential surface of the two third supporting side walls 33. The rollers 221 disposed on the opposite inner sides of the two second supporting side walls 24 of the innermost extension platform 22c are engaged with each other, so that the fork arm 31 can also slide and extend relative to the extension arm set 21 along the extension direction X, and a driving device 41 is used to drive the driving platform 11, the extension arm set 21 and the fork arm 31 to extend simultaneously in the extension direction X, and by controlling the driving stroke of the driving device 41, the two first supporting side walls 13, the two second supporting side walls 24 of each extension platform 22a, 22b, 22c and the two third supporting side walls 33 can be respectively protruded outwards to have a suspended distance D. The driving device 41 can be composed of a device whose driving stroke can be controlled, such as a chain, a belt driving device or a telescopic cylinder, and the utility model does not limit the type of the driving device 41.

[0032] In the present utility model, the cross-sections of the driving platform 11, the extension arm group 21, and the fork arm 31 are each generally in the shape of a "C" like a C-shaped steel. This not only enables the driving platform 11, the extension arm group 21, and the fork arm 31 to be sequentially stacked and folded together to achieve the function of linear bidirectional extension, but also provides excellent cross-sectional performance, high strength, and good seismic resistance. Further, the two first support side walls 13, the two second support side walls 24 of each extension platform 22a, 22b, 22c, and the two third support side walls 33 are all in the shape of plates and respectively have a height H, a width B, and a length L extending in the extension direction X. The lengths L of the two first support side walls 13 and the two second support side walls 24 of each extension platform 22a, 22b, 22c are the same, and the widths B of the two second support side walls 24 and the two third support side walls 33 of each extension platform 22a, 22b, 22c are the same. The suspension distances D of the two first support side walls 13, the two second support side walls 24 of each extension platform 22a, 22b, 22c, and the two third support side walls 33 are each half of their lengths L. The height H of the two first support side walls 13 is greater than the height H of the two second support side walls 24 of the innermost extension platform 22c of the extension arm group 21, and the height H of the two second support side walls 24 of the outermost extension platform 22a of the extension arm group 21 is greater than the height H of the two second support side walls 24 of the innermost extension platform 22c. And the height H of the two second support side walls 24 of the innermost extension platform 22c of the extension arm group 21 is equal to the height H of the two third support side walls 33. Thereby, the structural rigidity of each support side wall can be further ensured, and the sag amount of the overall fork arm structure during load-bearing extension and suspension can be greatly reduced.

[0033] Next, under the condition that the load P of the high-rigidity extension fork arm structure provided by the present utility model is 500 kg, the structural rigidity analysis is respectively carried out on the support side walls of the driving platform 11, the three extension platforms 22a, 22b, 22c, and the fork arm 31 to verify that the present utility model can indeed greatly reduce the sag amount during its load-bearing extension.

[0034] Among them, the support side walls of the driving platform 11, each extension platform 22a, 22b, 22c, and the fork arm 31 are respectively made of steel with a rigidity E of 21100 kg / mm 2 . And under the same conditions that the width B of the support side wall of each section (the driving platform 11, each extension platform 22a, 22b, 22c, and the fork arm 31) is 25 mm, the length L is 1000 mm, and the suspension distance D is 500 mm, under the conditions of different support side wall heights H (i.e., H1, H2, and H3), the deformation amount (i.e., the sag amount during load-bearing) is calculated by using the moment of inertia formula.

[0035] Moment of inertia formula: M = (B * H 3 ) / 12

[0036] The formula for the sag of the end of each section: A = (P * D 3 ) / 3 * E * M

[0037] The calculation table for the sag of the suspended load of the high-rigidity extended fork arm structure of the present utility model is as follows:

[0038]

[0039] And it can be known from the above test analysis that under the condition of the height of the support side wall of each section in the H1 column, the suspended distances of the driving platform 11, the three extended platforms 22a, 22b, and 22c and the fork arm 31 are all 500 mm. Therefore, the total suspended length (i.e., the total extended length) can reach 500 * 5 = 2500 mm, and the total sag is only the sum of the deformations of each section in the A1 column, which is only 1.21 mm. This represents that the structural rigidity provided by the present utility model can still maintain a very low deformation amount when performing multiple extensions, and thereby can greatly reduce the sag when the load-bearing extends and suspends, so as to ensure the accuracy of the material taking and shifting stroke. It can not only reduce the wear between components, but also make full use of the rack space to achieve the effect of not wasting the storage space. In addition, it can be clearly seen from the above table under different support side wall height conditions (i.e., the H2 and H3 columns). Even if the height conditions of the support side walls of each section of H2 and H3 are adopted, good low deformation amounts (1.47 mm and 3.21 mm respectively) can still be provided, which can further prove that the cross-sections of the driving platform 11, the extended arm group 21, and the fork arm 31 of the present utility model are respectively generally in the shape of a C as that of a C-shaped steel, and with the setting of the height, width, and length conditions of each support side arm, when the driving platform 11, the extended arm group 21, and the fork arm 31 are sequentially overlapped and sleeved with each other, it can provide excellent cross-sectional performance, high strength, and good earthquake resistance, and further achieve the effect of greatly reducing the sag of the fork arm structure when the load-bearing extends and suspends.

[0040] However, the disclosure of the above embodiments is only used to illustrate the present utility model, not to limit the present utility model. The replacement of equivalent elements should still belong to the scope of the present utility model.

[0041] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model, not to limit them; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A high-rigidity extended fork arm structure, characterized in that: It contains: A driving platform having a first carrier plate, and two first supporting side walls arranged parallel to each other are connected along two opposite sides of the first carrier plate; An extension arm assembly, which is composed of a plurality of extension platforms overlapped and sleeved with each other along an extension direction, each extension platform has a second carrier plate, and two second support side walls parallel to the two first support side walls are connected along two opposite sides of each second carrier plate, and the extension arm assembly is relatively slidably connected to the opposite inner side surfaces of the two first support side walls by the two second support side walls located at the outermost extension platform; a fork arm having a third carrier plate for receiving goods, and two third supporting side walls which are arranged parallel to the two second supporting side walls of each extension platform are connected along two opposite sides of the third carrier plate, and the fork arm is slidably connected to the inner side surfaces of the two second supporting side walls of the innermost extension platform of the extension arm group, and a driving device is used to drive the driving platform, the extension arm group and the fork arm to extend in the extension direction at the same time, so that the two first supporting side walls, the two second supporting side walls of each extension platform and the two third supporting side walls can protrude outward respectively and have a suspended distance; Among them, the two first supporting side walls, the two second supporting side walls of each extension platform and the two third supporting side walls are all plate-shaped and respectively have a height, a width and a length extending in the extension direction. The two first supporting side walls are the same length as the two second supporting side walls of each extension platform, and the height of the two first supporting side walls is greater than the height of the two second supporting side walls of the extension arm group located at the innermost extension platform.

2. The high-rigidity stretch fork arm structure according to claim 1, characterized in that: The two first supporting side walls are respectively connected to the upward end surface of the first carrier plate through a plurality of locking pieces, and the two first supporting side walls are aligned with the two opposite side edges of the first carrier plate. The driving platform is relatively slidably connected to a direct rail groove of a fixed supporting end by rollers on the two first supporting side walls, so that the driving platform can slide and extend along the extension direction relative to the fixed supporting end.

3. The high rigidity stretch fork arm structure according to claim 2, characterized in that: The two second supporting side walls of each extension platform are similarly connected to the upward end surface of its second carrier plate through a plurality of locking pieces, and the two second supporting side walls of each extension platform are aligned with the two opposite side edges of its second carrier plate, and the extension arm group is relatively slidably connected to the linear rail grooves recessed on the opposite inner side surfaces of the two first supporting side walls with rollers located on the two second supporting side walls of the outermost extension platform, so that each extension platform of the extension arm group can slide and extend relative to the driving platform.

4. The high-rigidity stretchable fork arm structure according to claim 3, characterized in that: The two third supporting side walls are relatively connected to the downward end surface of the third carrier plate through a plurality of locking pieces, and the two third supporting side walls are aligned with the two opposite side edges of the third carrier plate. The fork arm can slidably engage with rollers arranged on the opposite inner side surfaces of the two second supporting side walls of the extension arm group located on the innermost extension platform through the linear rail grooves recessed on the outer circumferential surfaces of the two third supporting side walls, so that the fork arm can slide and extend relative to the extension arm group.

5. The high-rigidity extendable fork arm structure according to any one of claims 1 to 4, characterized in that: The suspended distances of the two first supporting side walls, the two second supporting side walls of each extension platform and the two third supporting side walls are respectively one half of their lengths.

6. The high rigidity extendable fork arm structure according to any one of claims 1 to 4, characterized in that: The height of the two second supporting side walls of the extension arm assembly located at the outermost extension platform is greater than the height of the two second supporting side walls located at the innermost extension platform.

7. The high-rigidity extended fork arm structure according to claim 6, characterized in that: The height of the two second supporting side walls of the innermost extending platform of the extending arm assembly is equal to the height of the two third supporting side walls.

8. The high-rigidity extended fork arm structure according to claim 1, characterized in that: The widths of the two second supporting side walls and the two third supporting side walls of each extension platform are the same.

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