Lifting mechanism

Abstract

The invention relates to a lifting mechanism. The lifting mechanism comprises a frame body; the moving part is configured to be capable of moving along the frame body; the supporting assembly comprises a first connecting rod, the first end of the first connecting rod is hinged to the frame body, and the first connecting rod is configured to rotate around the first end of the first connecting rod; the second connecting rod is in contact with the first connecting rod and extends outwards along the contact part of the second connecting rod and the first connecting rod; the supporting assembly is connected with the moving part. The lifting mechanism has the lifting function of the frame body and the lifting function of the supporting piece at the same time, the forklift structure can be simplified, the forklift cost is reduced, and the forklift size is reduced.

Description

Technical Field

[0001] This application relates to the field of forklift robot devices, and particularly to a lifting mechanism. Background Art

[0002] An AGV pallet truck is a type of forklift robot. Currently, the operation of an AGV pallet truck mainly relies on inserting the forklift forks into the bottom holes of the pallet, lifting the goods, and then carrying the pallet and the goods, thereby achieving the automatic fork-lifting and carrying of the pallet and the goods.

[0003] Currently, an AGV pallet truck generally can only carry S-shaped pallets, iron pallets, or goods with fork hole channels, and is not suitable for carrying four-way pallets or goods with bottom crossbars. If forced to fork-lift a four-way pallet truck or goods with a bottom crossbar, when the load-bearing wheels of the vehicle roll forward, they will interfere with the bottom edge of the four-way pallet or the bottom crossbar of the goods, and it is necessary to rely on the load-bearing wheels to roll over the bottom edge of the four-way pallet or the bottom crossbar of the goods. When the load-bearing wheels roll over the bottom edge of the four-way pallet or the bottom crossbar of the goods, a large impact force is generated, which will not only cause damage to the pallet and greatly reduce the service life of the pallet; Summary of the Invention

[0004] This application aims to solve at least one of the above technical problems. By providing a lifting mechanism, the applicable range of the forklift robot is improved, and the service life of the forklift robot is increased.

[0005] A lifting mechanism provided by this application adopts the following technical solutions:

[0006] A lifting mechanism includes:

[0007] A frame body;

[0008] A moving member, which is configured to be movable along the frame body;

[0009] A support assembly, which includes:

[0010] A first connecting rod, the first end of which is hinged to the frame body, and the first connecting rod is configured to be rotatable around its first end;

[0011] A second connecting rod, which is in contact with the first connecting rod and extends outward along the contact portion of the two;

[0012] The support assembly is connected to the moving member.

[0013] Optionally, there are multiple groups of the support assemblies, and the multiple groups of support assemblies are connected by a third connecting rod, and at least one group of the support assemblies is connected to the moving member.

[0014] Optionally, the lifting mechanism is for a forklift; the lifting mechanism further includes a driving component; the driving component includes a driving source, a driving member, and a driven member;

[0015] The driving source is connected to the driving member, and the driving member is connected to the driven member; the driving source drives the driving member to move, the movement of the driving member drives the driven member to move, and the driven member performs linear movement;

[0016] The second connecting rod is rotatably connected to the driven member, and the first connecting rod is rotatably connected to the second connecting rod; the frame body is connected to the first connecting rod; the movement of the driven member drives the second connecting rod to move, and the first connecting rod restricts the movement of the second connecting rod.

[0017] Further, the transmission method by which the movement of the driving member drives the driven member to move is one or more of screw drive, lead screw drive, linear motor drive, hydraulic drive, pneumatic drive, gear-rack drive, belt drive, and chain drive.

[0018] Further, the transmission method by which the movement of the driving member drives the driven member to move is screw drive, the driving member is a screw, and the driven member is a nut;

[0019] Or, the transmission method by which the movement of the driving member drives the driven member to move is lead screw drive, the driving member is a lead screw, and the driven member is a nut.

[0020] Optionally, the support assembly further includes a support member; the support member is connected to the second connecting rod.

[0021] Optionally, the number of the second connecting rods in the support assembly is 2, and the number of the first connecting rods in the support assembly is 2.

[0022] Further, the number of the support assemblies is 2.

[0023] Further, the number of the driven members is one or more.

[0024] Further, the forklift component further includes a slide rail and a slider; the slide rail is connected to the frame body, the slider is movably connected to the slide rail; the slider is connected to the third connecting rod or the driven member.

[0025] In summary, the present application provides a lifting mechanism. Through the design of the lifting mechanism, the lifting of the frame body on the forklift and the lifting of the support member are integrally designed. The lifting of the support member can prevent interference between the support member and the bottom edge of the cross-shaped pallet or the bottom bar of the goods when the forklift forks the cross-shaped pallet or the pallet with a bottom bar, and there is no longer a need to rely on the support member to roll over the bottom edge of the cross-shaped pallet or the bottom bar of the goods. This can avoid damage to the pallet caused by the impact force generated when the support member rolls over the bottom edge of the cross-shaped pallet or the bottom bar of the goods, reducing the service life of the pallet; it can also avoid cracking and damage of the support member after being subjected to a large impact force, affecting the normal use of the vehicle; moreover, it can avoid the vehicle attitude deviation caused by a large impact force, resulting in uncontrollable changes in vehicle positioning and navigation, thereby affecting the entire forklift device to fork the pallet or goods.

[0026] The integrated design of the lifting of the frame body on the forklift and the lifting of the support member enables the lifting mechanism to have the functions of lifting the frame body and the support member at the same time, which can simplify the forklift structure, reduce the forklift cost, and reduce the forklift volume. There is no need for an extra lifting mechanism to achieve the lifting of the support member. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is the first structural schematic diagram of the lifting mechanism according to an embodiment of the present application;

[0028] Figure 2 is the second structural schematic diagram of the lifting mechanism according to an embodiment of the present application;

[0029] Figure 3 is the third structural schematic diagram of the lifting mechanism according to an embodiment of the present application;

[0030] Figure 4 is the fourth structural schematic diagram of the lifting mechanism according to an embodiment of the present application;

[0031] Figure 5 is the first working schematic diagram of the lifting mechanism according to an embodiment of the present application;

[0032] Figure 6 is the second working schematic diagram of the lifting mechanism according to an embodiment of the present application.

[0033] Description of the reference numerals: 10, driving component; 11, driving source; 12, driving member; 13, driven member; 14, third connecting rod; 15, coupling; 16, fixed-end support seat; 17, support-end support seat; 18, moving member; 20, support assembly; 21, second connecting rod; 22, first connecting rod; 23, support member; 24, connecting rod; 30, forklift component; 31, frame body; 32, slide rail; 33, slider; 34, guide wheel; 35, width limit wheel; 36, lifting member; 40, ground; 50, forklift; 60, pallet. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present application.

[0035] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more features. In the description of the present application, "a plurality" means two or more unless specifically defined otherwise.

[0036] In the present application, the term "exemplary" is used to mean "serving as an example, illustration, or description". Any embodiment described as "exemplary" in the present application is not necessarily to be construed as being more preferred or having more advantages than other embodiments. In order for any person skilled in the art to implement and use the present application, the following description is given. In the following description, details are set forth for the purpose of explanation. It should be understood by those skilled in the art that the present application can be implemented without these specific details. In other instances, well-known structures and processes are not described in detail to avoid unnecessary details from obscuring the description of the present application. Therefore, the present application is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed in the present application.

[0037] Embodiments of the present application disclose a lifting mechanism. Refer to Figure 1-6 , a lifting mechanism may include a driving component 10, a support assembly 20, and a forklift component 30.

[0038] The driving component 10 may include a driving source 11, a driving member 12, a driven member 13, a third connecting rod 14, a coupling 15, a fixed-end support seat 16, a support-end support seat 17, and a moving member 18. The support assembly 20 may include a second connecting rod 21, a first connecting rod 22, a support member 23, and a connecting rod 24. The forklift component 30 may include a frame body 31, a slide rail 32, a slider 33, a guide wheel 34, a width limiting wheel 35, and a lifting member 36.

[0039] The driving source 11 is connected to the driving member 12 through the coupling 15, and the driving member 12 is connected to the driven member 13. The driving source 11 drives the driving member 12 to rotate, and the rotation of the driving member 12 drives the driven member 13 to linearly move.

[0040] The driven member 13 is connected to the moving member 18. The moving member 18 is connected to the third connecting rod 14. The fixed-end support seat 16 and the support-end support seat 17 are connected to the frame body 31. The driving member 12 passes through the fixed-end support seat 16 and the support-end support seat 17. The slide rail 32 is connected to the frame body 31, the slider 33 is connected to the slide rail 32, and the slider 33 can move on the slide rail 32. The slider 33 is connected to the third connecting rod 14.

[0041] The movement of the driven member 13 drives the movement of the moving member 18, the movement of the moving member 18 drives the movement of the third connecting rod 14, and the movement of the third connecting rod 14 drives the slider 33 to move along the slide rail 32.

[0042] The arrangement of the slider 33 and the slide rail 32 can ensure the movement guidance of the driven member 13 and also facilitate the positioning of the movement distance of the driven member 13. It can also share the pressure and improve the load-bearing capacity.

[0043] The guide wheel 34 and the width limiting wheel 35 are connected to the frame body 31. The setting of the guide wheel 34 can facilitate the lifting and lowering movement of the entire lifting mechanism, improve the smoothness of the lifting and lowering movement, and also facilitate the guidance of the lifting and lowering movement direction. The setting of the width limiting wheel 35 can further improve the smoothness of the lifting and lowering movement, facilitate the guidance of the lifting and lowering movement direction, and also improve the anti-overturning ability during the lifting and lowering movement, enhancing the stability of the entire lifting mechanism.

[0044] The second connecting rod 21 is rotatably connected to the third connecting rod 14, the first connecting rod 22 is rotatably connected to the second connecting rod 21, and the first connecting rod 22 is connected to the frame body 31. The second connecting rod 21 is connected to the support member 23. The setting of the support member 23 can avoid the loss of the second connecting rod 21 and improve the service life of the lifting mechanism.

[0045] The movement of the third link 14 drives the movement of the second link 21. Under the restriction of the first link 22, the second link 21 moves towards the ground. Eventually, the support member 23 contacts the ground. The continuous movement of the third link 14 drives the second link 21 to move. Due to the restriction of the ground, the first link 22 jacks up the frame body 31, thereby enabling the frame body 31 to perform a lifting motion. The lifting of the frame body 31 drives the lifting of the tray.

[0046] The lifting member 36 is connected to the frame body 31, and the first link 22 is connected to the lifting member 36. The lifting member 36 can facilitate the transmission of power by the first link 22 and facilitate the first link 22 to jack up the frame body 31. Specifically, the lifting member 36 is fixedly connected to the frame body 31, and the first link 22 is rotatably connected to the lifting member 36.

[0047] The number of the support assemblies 20 can be two. The support assemblies 20 are connected to the third link 14. The support assemblies 20 are arranged along the direction of the frame body 31. Specifically, the second link 21 of one support assembly 20 is connected to one end of the third link 14; the second link 21 of the other support assembly 20 is connected to the other end of the third link 14.

[0048] Through the arrangement of the third link 14, the movement of the two support assemblies 20 can be synchronized, ensuring that the second links 21 of the two support assemblies 20 move the same distance, and the first links 22 jack up the frame body 31 to the same height. Furthermore, the lifting consistency of the lifting mechanism is ensured, and the stability of the lifting mechanism is improved.

[0049] Specifically, the support assembly 20 can include two second links 21, two first links 22, and two support members 23. The third link 14 can also be arranged in two. The third link 14 can be arranged on both sides of the moving member 18. One end of the connecting rod 24 is connected to one second link 21, and the other end is connected to the other second link 21. In this way, the movement of the two second links 21 can be synchronized to ensure consistency.

[0050] Specifically, the driving member 12 can be a screw rod, the driven member 13 can be a nut, and the driving member 12 and the driven member 13 can be driven by a screw rod. Alternatively, the driving member 12 can be a lead screw, the driven member 13 can be a nut, and the driving member 12 and the driven member 13 can be driven by a lead screw.

[0051] It can be understood that through the design of the lifting mechanism in this application, the lifting of the frame body 31 on the forklift 50 and the lifting of the support member 23 are integrally designed. The lifting of the support member 23 enables the forklift 50 to avoid interference with the bottom edge of the cross-shaped pallet or the bottom bar of the pallet when picking up the cross-shaped pallet or the pallet with a bottom bar, and there is no longer a need to rely on the support member 23 to roll over the bottom edge of the cross-shaped pallet or the bottom bar of the goods. This can prevent the impact force generated by the support member 23 rolling over the bottom edge of the cross-shaped pallet or the bottom bar of the goods from damaging the pallet 60 and reducing the service life of the pallet 60; it can also prevent the support member 23 from cracking and being damaged after being subjected to a large impact force, affecting the normal use of the vehicle; moreover, it can avoid the vehicle attitude deviation caused by a large impact force, resulting in uncontrollable changes in vehicle positioning and navigation, thereby affecting the entire forklift 50's picking up of the pallet 60 or goods.

[0052] The integrated design of the lifting of the frame body 31 on the forklift 50 and the lifting of the support member 23 enables the lifting mechanism to simultaneously have the functions of lifting the frame body 31 and the support member 23, which can simplify the structure of the forklift 50, reduce the cost of the forklift 50, and reduce the volume of the forklift 50. There is no need for an extra lifting mechanism to achieve the lifting of the support member 23.

[0053] It can be understood that including 2 second connecting rods 21, 2 first connecting rods 22, and 2 support members 23 in the support assembly 20 is a preferred embodiment of this application. This application does not specifically limit the specific number of the second connecting rod 21, the first connecting rod 22, and the support member 23. The specific number of the second connecting rod 21, the first connecting rod 22, and the support member 23 does not affect the technical solution of this application from achieving its functions and reaching its technical effects. That is, the number of the second connecting rod 21, the first connecting rod 22, and the support member 23 can be one or more.

[0054] It can be understood that the connecting rod 24 is a preferred embodiment of this application. The support assembly 20 may not include the connecting rod 24. This does not affect the technical solution of this application from achieving its functions and reaching its technical effects.

[0055] It can be understood that having 2 support assemblies 20 is a preferred embodiment of this application. This application does not specifically limit the number of the support assemblies 20. The specific number of the support assemblies 20 does not affect the technical solution of this application from achieving its functions and reaching its technical effects. That is, the number of the support assemblies 20 can be one or more.

[0056] It can be understood that connecting the slider 33 to the third connecting rod 14 is a preferred embodiment of this application. The slider 33 can also be connected to the moving member 18, and the slider 33 can also be connected to the driven member 13. This does not affect the technical solution of this application from achieving its functions and reaching its technical effects.

[0057] It can be understood that the setting of the slider 33 and the slide rail 32 is a preferred embodiment of the embodiment of the present application. The forklift component 30 may not include the slider 33 and the slide rail 32, which does not affect the technical solution of the present application from realizing its functions and achieving its technical effects.

[0058] It can be understood that the moving member 18 is a preferred embodiment of the embodiment of the present application. The driving component 10 may not include the moving member 18, and the third link 14 may be directly connected to the driven member 12. This does not affect the technical solution of the present application from realizing its functions and achieving its technical effects.

[0059] It can be understood that the third link 14 is a preferred embodiment of the embodiment of the present application. The driving component 10 may not include the third link 14. The support assembly 20 may be directly connected to the driven member 12. This does not affect the technical solution of the present application from realizing its functions and achieving its technical effects.

[0060] It can be understood that the present application does not specifically limit the specific number of the driven members 12. The specific number of the driven members 12 does not affect the technical solution of the present application from realizing its functions and achieving its technical effects.

[0061] For example, the number of the support assemblies 20 may be provided with multiple, the number of the driven members 12 may be provided with multiple, the driven members 12 are connected to the support assemblies 20, and the driving member 11 drives the multiple driven members 12 to move simultaneously, thereby driving the support assemblies 20 to perform lifting motion.

[0062] Or, the number of the support assemblies 20 may be provided with multiple, the number of the driven members 12 may be provided with multiple, the driven members 12 are connected to the third link 14, and the driving member 11 drives the multiple driven members 12 to move simultaneously, thereby driving the third link 14 to move, and thus driving the support assemblies 20 to perform lifting motion.

[0063] Or, grooves are provided at the positions where the multiple driven members 12 are connected to the third link 14 to ensure a certain redundancy in the movement of the driven members 12, and to avoid too high requirements for the consistency of the moving distances of the multiple driven members 12 driven by the driving member 11 simultaneously.

[0064] It can be understood that the present application does not specifically limit the transmission mode between the driving member 11 and the driven members 12, which may be one or more of screw transmission, ball screw transmission, linear motor transmission, hydraulic transmission, pneumatic transmission, gear rack transmission, belt transmission, and chain transmission. This does not affect the technical solution of the present application from realizing its functions and achieving its technical effects.

[0065] It can be understood that the present application does not limit the specific form of the support member 23. The support member 23 may be a wheel, a bearing, or a foot pad. The present application does not make any restrictions on this, as long as the support member 23 can be used for ground support.

[0066] The above are only the implementation manners of this application, and do not thereby limit the patent scope of this application. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of this application, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of this application.

Claims

1. A lifting mechanism, characterized in that: Comprising: Frame body; Moving member, which is configured to be movable along the frame body; Support assembly, the support assembly includes: First connecting rod, the first end of the first connecting rod is hinged to the frame body, and the first connecting rod is configured to be rotatable around its first end; Second connecting rod, the second connecting rod is in contact with the first connecting rod and extends outward along the contact portion between the two; The support assembly is connected to the moving member.

2. The lifting mechanism according to claim 1, wherein There are multiple groups of the support assemblies, and the multiple groups of support assemblies are connected by a third connecting rod, and at least one group of the support assemblies is connected to the moving member.

3. The lifting mechanism according to claim 1, characterized in that: The lifting mechanism is for a forklift; the lifting mechanism further includes a driving component; the driving component includes a driving source, a driving member, and a driven member; The driving source is connected to the driving member, and the driving member is connected to the driven member; the driving source drives the driving member to move, the movement of the driving member drives the driven member to move, and the driven member performs linear motion; The second connecting rod is rotatably connected to the driven member, and the first connecting rod is rotatably connected to the second connecting rod; the frame body is connected to the first connecting rod; the movement of the driven member drives the second connecting rod to move, and the first connecting rod restricts the movement of the second connecting rod.

4. The lifting mechanism according to claim 3, characterized in that: The transmission mode in which the movement of the driving member drives the driven member to move is one or more of screw drive, lead screw drive, linear motor drive, hydraulic drive, pneumatic drive, gear-rack drive, belt drive, and chain drive.

5. The lifting mechanism according to claim 4, characterized in that: The transmission mode in which the movement of the driving member drives the driven member to move is screw drive, the driving member is a screw, and the driven member is a nut; Or, the transmission mode in which the movement of the driving member drives the driven member to move is lead screw drive, the driving member is a lead screw, and the driven member is a nut.

6. The lifting mechanism according to claim 1, wherein: The support assembly further includes a support member; the support member is connected to the second connecting rod.

7. The lifting mechanism according to claim 1, characterized in that: The number of the second connecting rods in the support assembly is 2, and the number of the first connecting rods in the support assembly is 2.

8. The lifting mechanism according to claim 2, characterized in that: The number of the support assemblies is 2.

9. The lifting mechanism according to claim 3, characterized in that: The number of the driven members is one or more.

10. A lifting mechanism according to claim 9, characterized in that: The forklift component further includes a slide rail and a slider; the slide rail is connected to the frame body, and the slider is movably connected to the slide rail; the slider is connected to the third connecting rod or the driven member.

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