elevating platform

Abstract

The application provides a lifting platform and relates to the technical field of AGV transportation. A driving mechanism is fixed to a groove, and the driving mechanism is connected with a bearing platform to drive the bearing platform to move in a first direction. The bearing platform is formed with a bearing plane. When the bearing plane is coplanar with a second plane, a first blocking mechanism is higher than the first plane, and a second blocking mechanism and a third blocking mechanism are both lower than the second plane. When the bearing plane is located between the first plane and the second plane, the first blocking mechanism is higher than the first plane, the second blocking mechanism is higher than the second plane, and the third blocking mechanism is higher than the bearing plane. When the bearing plane is coplanar with the first plane, the first blocking mechanism abuts against the bearing platform, the first blocking mechanism is lower than the first plane, the second blocking mechanism is higher than the second plane, and the third blocking mechanism is higher than the second plane. The lifting platform can solve the problems of the existing lifting platform, such as the blocking mechanism malfunction, the failure to timely block the AGV, and the high cost of the lifting platform.

Description

Technical Field

[0001] This application relates to the field of AGV handling technology, and in particular to a lifting platform. Background Technology

[0002] With the development of technology, AGVs are increasingly being used in the field of material handling. In some special applications, AGVs need to transfer goods between different floors. For transfers between floors with a large height difference, elevators are generally used; for transfers between floors with a small height difference, lifting platforms are generally used. Lifting platforms save space and have lower costs, giving them significant advantages.

[0003] However, because ordinary lifting platforms lack safety doors like elevators, AGVs are highly susceptible to safety accidents when receiving false signals. For example, if the lifting platform is not at a high position, and the AGV travels from a high position to the lifting platform due to a false signal, the AGV may fall. Another example is if the AGV is on the lifting platform and descends with it, but starts moving before the platform reaches the lowest position, the AGV may fall. Yet another example is if the lifting platform is at a high position, and the AGV travels from a lower floor and accidentally falls into the lifting platform, causing damage.

[0004] However, existing lifting platforms generally do not have blocking mechanisms. In some lifting platforms that do have blocking mechanisms, these mechanisms are typically driven by a power unit, which requires signal control. This makes the blocking mechanism prone to malfunction, failing to stop the AGV in time and posing a risk of damage. Furthermore, the high cost of installing a power unit increases the overall cost of the lifting platform. Summary of the Invention

[0005] In view of this, this application provides a lifting platform to solve the problems of malfunction of the blocking mechanism of existing lifting platforms, which prevents them from blocking AGVs in time, and the high cost of lifting platforms.

[0006] According to one aspect of this application, a lifting platform is provided, which is used to drive an AGV to move on a carrying platform. The carrying platform includes a high-level part and a low-level part. The low-level part has a groove. The high-level part includes a first plane. The low-level part includes a second plane. The first plane is higher than the second plane in a first direction.

[0007] The lifting platform includes a drive mechanism, a bearing platform, a first blocking mechanism, a second blocking mechanism, and a third blocking mechanism. The drive mechanism is fixed to the groove and connected to the bearing platform to drive the bearing platform to move along the first direction. The bearing platform has a bearing plane.

[0008] The first blocking mechanism is disposed on the higher-level part, and a portion of the first blocking mechanism is rotatable relative to the higher-level part; the length of the second blocking mechanism in the first direction is adjustable; the third blocking mechanism is hinged to the support platform.

[0009] When the bearing plane and the second plane are coplanar, a portion of the first blocking mechanism is higher than the first plane, while both the second blocking mechanism and the third blocking mechanism are lower than the second plane.

[0010] When the bearing plane is located between the first plane and the second plane, a portion of the first blocking mechanism is higher than the first plane, a portion of the second blocking mechanism is higher than the second plane, and a portion of the third blocking mechanism is higher than the bearing plane;

[0011] When the bearing plane is coplanar with the first plane, the first blocking mechanism abuts against the bearing platform. The height of the first blocking mechanism in the first direction is lower than the first plane, a portion of the second blocking mechanism is higher than the second plane, and a portion of the third blocking mechanism is higher than the second plane.

[0012] Preferably, the first blocking mechanism includes a baffle and a first rolling part, the baffle being hinged to the higher-order part, and the first rolling part being fixed to the baffle;

[0013] The higher-level portion includes a notch located on the side of the baffle opposite to the rolling portion. When the bearing plane is coplanar with the first plane, the first rolling portion abuts against the bearing platform, and the baffle is located within the notch.

[0014] Preferably, the first blocking mechanism includes a first elastic part, one end of which abuts against the higher-order part, and the other end of which abuts against the baffle. The first elastic part is capable of applying a force to the baffle in a direction opposite to the notch.

[0015] Preferably, the second blocking mechanism includes a support portion, a sliding portion, and a second elastic portion. The support portion is fixed to the groove, the sliding portion is slidably connected to the support portion, and the two ends of the second elastic portion abut against the support portion and the sliding portion, respectively.

[0016] When the bearing plane and the second plane are coplanar, the second elastic part is compressed, and the sliding part abuts against the bearing platform;

[0017] When the bearing plane is higher than the second plane, the second elastic portion extends, and a portion of the sliding portion is higher than the second plane.

[0018] Preferably, the support portion includes a limiting channel that extends along the first direction, the sliding portion is capable of sliding within the limiting channel, and the second elastic portion is located within the limiting channel.

[0019] Preferably, the third blocking mechanism includes an abutment plate and a mounting base, the mounting base being fixed to the bearing platform, and the middle part of the abutment plate being hinged to the mounting base;

[0020] The support platform includes an extension through the support platform along the first direction, and when the support plane is higher than the second plane, a portion of the abutment plate extends out from the extension.

[0021] Preferably, the third blocking mechanism further includes a second counterweight, which is disposed at the first end of the abutment plate, and the second end of the abutment plate can extend relative to the protrusion.

[0022] Preferably, the third blocking mechanism further includes a second rolling part and a third elastic part. The second rolling part is fixed to the first end of the abutment plate. When the rolling part abuts against the groove, the second rolling part can move relative to the groove, thereby driving the abutment plate to rotate.

[0023] One end of the third elastic part is connected to the mounting base, and the other end of the third elastic part is connected to the first end of the abutment plate. The third elastic part is in an extended state.

[0024] Preferably, the lifting platform further includes two guard plates, which are respectively located on both sides of the bearing plane in the second direction. The guard plates extend from the bearing plane in a direction opposite to the groove, and the second direction is perpendicular to the first direction.

[0025] Preferably, the lifting platform further includes a fourth blocking mechanism, which is fixed to the bearing platform and disposed at one end of the bearing platform in a third direction, the third direction being perpendicular to the first direction and the second direction respectively;

[0026] When the bearing plane is coplanar with the first plane, the fourth blocking mechanism is lower than the bearing plane;

[0027] When the bearing plane is lower than the first plane, the fourth blocking mechanism is higher than the bearing plane.

[0028] In the lifting platform of this application, the first plane on the upper section is the ground of the upper floor, and the second plane on the lower section is the ground of the lower floor. The drive mechanism is fixed in the groove and can drive the carrying platform to move. When the carrying plane and the second plane are coplanar, the lifting platform is in a lower position, and the first blocking mechanism is higher than the first plane, preventing the AGV from crossing the first blocking mechanism and thus preventing the AGV from falling from the upper floor. At the same time, both the second and third blocking mechanisms are lower than the second plane, allowing the AGV to move from the second plane to the carrying plane of the carrying platform. When the carrying plane is located between the first and second planes, i.e., when the lifting platform moves from a higher position to a lower position or from a lower position to a higher position, the first blocking mechanism is higher than the first plane, preventing the AGV from crossing the first blocking mechanism and thus preventing the AGV from falling from the upper floor. Meanwhile, the second blocking mechanism is partially higher than the second plane, preventing the AGV from falling from the lower floor into the recess; the third blocking mechanism is partially higher than the bearing plane, preventing the AGV from falling from the bearing platform. When the bearing plane and the first plane are coplanar, the first blocking mechanism is lower than the first plane, allowing the AGV to move from the higher floor to the bearing platform. (The last two sentences are redundant and can be omitted.)

[0029] As described above, the first, second, and third blocking mechanisms prevent the AGV from falling. Their movement is driven by the movement of the supporting platform, preventing malfunctions and reducing the risk of AGV damage. Furthermore, these mechanisms do not require a power unit, thus reducing the cost of the lifting platform. Attached Figure Description

[0030] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This diagram illustrates the relative positions of the lifting platform and the supporting platform when the lifting platform is in a low position, according to an embodiment of the present invention.

[0032] Figure 2 Show Figure 1 A structural diagram of section B;

[0033] Figure 3This diagram shows a three-dimensional structural schematic of the lifting platform in a low position according to an embodiment of the present invention.

[0034] Figure 4 This diagram illustrates the relative positions of the lifting platform and the supporting platform from one perspective when the lifting platform is in a high position, according to an embodiment of the present invention.

[0035] Figure 5 This diagram illustrates the relative positions of the lifting platform and the carrying platform from another perspective when the lifting platform is in a high position, according to an embodiment of the present invention.

[0036] Figure 6 Show Figure 5 A schematic diagram of the structure of part A;

[0037] Figure 7 This is a three-dimensional structural diagram of the lifting platform of an embodiment of the present invention when it is in a high position.

[0038] Figure 8 This is a three-dimensional structural diagram of the lifting platform of an embodiment of the present invention when it is in a high position, from another perspective.

[0039] Figure 9 A three-dimensional schematic diagram of the first blocking structure is shown when the bearing plane is lower than the first plane;

[0040] Figure 10 A three-dimensional schematic diagram of the first blocking structure is shown when the bearing plane and the first plane are coplanar.

[0041] Figure 11 A three-dimensional schematic diagram of the second blocking structure is shown when the bearing plane and the second plane are coplanar.

[0042] Figure 12 A three-dimensional schematic diagram of the second blocking structure is shown when the bearing plane is higher than the second plane.

[0043] Figure 13 A three-dimensional schematic diagram of the third blocking structure is shown when the bearing plane is higher than the second plane.

[0044] Figure 14 A three-dimensional schematic diagram of the third blocking structure is shown when the bearing plane and the second plane are coplanar.

[0045] Figure 15 Showing Figure 8 Enlarged view of section C.

[0046] Icons: 11-High-level section; 111-Notch; 12-Low-level section; 13-Groove; 2-Bearing platform; 21-Hook plate; 3-First blocking mechanism; 31-Baffle; 32-First rolling section; 33-Fixed seat; 34-First counterweight section; 35-First elastic section; 36-Connecting plate; 37-First rotating shaft; 38-Mounting block; 4-Second blocking mechanism; 41-Support section; 42-Sliding section; 43-Second elastic section; 44-Guide block; 45-Limiting block; 46-Base plate; 47-Top plate; 5-Third blocking mechanism; 51-Abutting plate; 52-Mounting seat; 53-Second rotating shaft; 54-Third elastic section; 55-Second counterweight section; 56-Second rolling section; 57-Connecting rod; 61-Sliding block; 62-Frame; 7-Guard plate; 8-AGV; L1-First direction; L2-Second direction; L3-Third direction. Detailed Implementation

[0047] The following detailed embodiments are provided to help the reader gain a comprehensive understanding of the methods, apparatus, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatus, and / or systems described herein will be apparent after understanding the disclosure of this application. For example, the order of operations described herein is merely illustrative and is not limited to the order set forth herein; changes that will be apparent after understanding the disclosure of this application are possible, except for operations that must occur in a specific order. Furthermore, for clarity and brevity, descriptions of features known in the art may be omitted.

[0048] The features described herein may be implemented in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein have been provided merely to illustrate some of the many feasible ways of implementing the methods, apparatus, and / or systems described herein that will be apparent upon understanding the disclosure of this application.

[0049] Throughout the specification, when an element (such as a layer, region, or substrate) is described as being "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, it may be directly "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, or there may be one or more other elements in between. In contrast, when an element is described as being "directly on" another element, "directly connected to" another element, "directly bonded to" another element, "directly on" another element, or "directly covering" another element, there may be no other elements in between.

[0050] As used herein, the term “and / or” includes any one of the relevant items listed and any combination of any two or more items.

[0051] Although terms such as “first,” “second,” and “third” may be used herein to describe individual components, assemblies, regions, layers, or parts, these components, assemblies, regions, layers, or parts are not limited by these terms. Rather, these terms are used only to distinguish one component, assembly, region, layer, or part from another. Therefore, without departing from the teachings of the examples described herein, the first component, assembly, region, layer, or part referred to as the second component, assembly, region, layer, or part may also be referred to as the second component, assembly, region, layer, or part.

[0052] For ease of description, spatial relation terms such as “above,” “upper,” “below,” and “lower” are used herein to describe the relationship between one element and another, as shown in the accompanying drawings. Such spatial relation terms are intended to include not only the orientation depicted in the drawings but also different orientations of the device during use or operation. For example, if the device in the drawings is flipped, an element described as being “above” or “upper” relative to another element will subsequently be “below” or “lower” relative to that other element. Therefore, the term “above” includes both “above” and “below” orientations depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relation terms used herein will be interpreted accordingly.

[0053] The terminology used herein is for the purpose of describing various examples only and is not intended to limit this disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms “comprising,” “including,” and “having” enumerate the stated features, quantities, operations, components, elements, and / or combinations thereof, but do not exclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.

[0054] Variations in the shapes shown in the accompanying drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the accompanying drawings, but include changes in shape that may occur during manufacturing.

[0055] The features of the examples described herein can be combined in various ways that will be apparent upon understanding the disclosure of this application. Furthermore, although the examples described herein have a wide variety of constructions, other constructions are possible, as will be apparent upon understanding the disclosure of this application.

[0056] The lifting platform of this application is used to drive the AGV8 to move on the carrying platform 2. The carrying platform 2 includes a high-level part 11 and a low-level part 12. The high-level part 11 can be a high floor, and the low-level part 12 can be a low floor. The low-level part 12 has a groove 13. The high-level part 11 includes a first plane, and the low-level part 12 includes a second plane. The first plane is higher than the second plane in the first direction L1. The bottom surface of the groove 13 is a third plane.

[0057] When the bearing plane (the upper surface of the bearing platform 2) is coplanar with the first plane, the lifting platform is in a high position; when the bearing plane is coplanar with the second plane, the lifting platform is in a low position; when the bearing plane moves from the first plane to the second plane, the lifting platform is in a downward moving state; when the bearing plane moves from the second plane to the first plane, the lifting platform is in an upward moving state. The following will combine... Figures 1 to 14 The application platform of this invention will be described in detail below. Figures 1 to 14 In the middle, the first direction L1, the second direction L2, and the third direction L3 are perpendicular to each other.

[0058] like Figures 1 to 14 As shown, the lifting platform includes a drive mechanism ( Figures 1 to 14 (Not shown in the image) 2, a carrying platform 2, a first blocking mechanism 3, a second blocking mechanism 4 and a third blocking mechanism 5, a driving mechanism fixed in a frame 62 on a groove 13, the driving mechanism being connected to the carrying platform 2 to drive the carrying platform 2 to move along the first direction L1, the carrying platform 2 having a carrying plane.

[0059] The first blocking mechanism 3 is hinged to the upper part 11; the second blocking mechanism 4 is connected to the groove 13, and the length of the second blocking mechanism 4 in the first direction L1 can be adjusted; the third blocking mechanism 5 is hinged to the support platform 2.

[0060] When the bearing plane and the second plane are coplanar, the first blocking mechanism 3 is higher than the first plane, and the second blocking mechanism 4 and the third blocking mechanism 5 are both lower than the second plane.

[0061] When the bearing plane is located between the first plane and the second plane, the first blocking mechanism 3 is higher than the first plane, a portion of the second blocking mechanism 4 is higher than the second plane, and a portion of the third blocking mechanism 5 is higher than the bearing plane.

[0062] When the bearing plane is coplanar with the first plane, the first blocking mechanism 3 abuts against the bearing platform 2. The height of the first blocking mechanism 3 in the first direction L1 is lower than the first plane, part of the second blocking mechanism 4 is higher than the second plane, and part of the third blocking mechanism 5 is higher than the second plane.

[0063] In the lifting platform of this application, the drive mechanism is fixed within the groove 13 and can drive the carrying platform 2 to move. When the carrying plane and the second plane are coplanar, the lifting platform is in a low position, and the first blocking mechanism 3 is higher than the first plane, preventing the AGV8 from passing over the first blocking mechanism 3, thereby preventing the AGV8 from falling from the high floor. At the same time, the second blocking mechanism 4 and the third blocking mechanism 5 are both located within the groove 13, allowing the AGV8 to move from the second plane to the carrying plane of the carrying platform 2. When the carrying plane is located between the first and second planes, i.e., when the lifting platform moves from a high position to a low position or from a low position to a high position, the first blocking mechanism 3 is higher than the first plane, preventing the AGV8 from passing over the first blocking mechanism 3, thereby preventing the AGV8 from falling from the high floor. Meanwhile, part of the second blocking mechanism 4 is higher than the second plane, preventing the AGV8 from falling from the lower floor into the groove 13. Part of the third blocking mechanism 5 is higher than the bearing plane, preventing the AGV8 from falling from the bearing platform 2. When the bearing plane and the first plane are coplanar, the first blocking mechanism 3 is lower than the first plane, allowing the AGV8 to move from the higher floor to the bearing platform 2. (The last two sentences are redundant and can be omitted.)

[0064] As described above, the first blocking mechanism 3, the second blocking mechanism 4, and the third blocking mechanism 5 can prevent the AGV8 from falling. The movement of the first blocking mechanism 3, the second blocking mechanism 4, and the third blocking mechanism 5 is driven by the movement of the supporting platform 2, which can prevent the blocking mechanisms from malfunctioning, thereby reducing the risk of damage to the AGV8. At the same time, the first blocking mechanism 3, the second blocking mechanism 4, and the third blocking mechanism 5 do not require a power unit, thereby reducing the cost of the lifting platform.

[0065] like Figure 1 , 2 As shown in Figures 4 and 5, the end face of the higher-order portion 11 has an internally recessed portion, the first blocking mechanism 3 is installed in the recessed portion, and the bottom of the recessed portion has a recessed opening 111 that leads into the interior of the higher-order portion 11. Figure 15 As shown, a hook plate 21 is provided on the carrying platform 2. The hook plate 21 is used to cooperate with the first rolling part 32 in the first blocking mechanism 3 described below, so as to realize the switching of the first blocking mechanism 3 between the blocking state and the non-blocking state.

[0066] like Figure 6 , 9As shown in Figure 10, the first blocking mechanism 3 is located at one end of the higher-order portion 11 in the third direction L3. The first blocking mechanism 3 includes a baffle 31 and a first rolling part 32. The baffle 31 is hinged to the higher-order portion 11, and the first rolling part 32 is fixed to the baffle 31. The first rolling part 32 is used to cooperate with the hook plate 21. When the bearing plane is lower than the first plane, such as Figure 9 As shown, the baffle 31 is in an upright state, with a portion of the baffle 31 higher than the first plane. The size of the portion of the baffle 31 above the first plane is greater than the coverage of the safety contact edge of the AGV8, and the size of the portion of the baffle 31 above the first plane is greater than the height of the chassis. Thus, the baffle 31 can block the AGV8 to prevent it from falling from the upper section 11. At this time, the hook plate 21 does not contact the first rolling part 32. As the carrying platform 2 gradually moves upward, the hook plate 21 gradually moves towards the first rolling part 32. When the hook plate 21 contacts the first rolling part 32, the hook plate 21 applies force to the first rolling part 32. Then, the hook plate 21 continues to move upward, and the baffle 31 gradually rotates. At this time, a portion of the baffle 31 is still higher than the first plane, preventing the AGV8 from falling from the upper section 11. When the carrying platform 2 moves to the point where the carrying plane and the first plane are aligned, as shown... Figure 6 and Figure 15 As shown, the baffle 31 is located inside the recess 111. The baffle 31 is lower than the first plane. At this time, the AGV8 can move from the first plane to the bearing plane, thereby realizing the AGV8 transport.

[0067] like Figure 6 , Figure 9 and Figure 10 As shown, the first blocking mechanism 3 also includes a fixed base 33, a connecting plate 36, a first rotating shaft 37, and mounting blocks 38. The fixed base 33 includes two separate parts, which are fixed to the wall of the recess by bolts and connected by the connecting plate 36. There are two mounting blocks 38, which are spaced apart on the connecting plate 36. The baffle 31 is connected to the two mounting blocks 38 by the first rotating shaft 37, so that the baffle 31 can rotate relative to the two mounting blocks 38.

[0068] Furthermore, such as Figure 9 and Figure 10 As shown, the first blocking mechanism 3 also includes a first elastic part 35. One end of the first elastic part 35 abuts against the connecting plate 36, and the other end of the first elastic part 35 abuts against the baffle 31. The first elastic part 35 can apply a force to the baffle 31 in a direction opposite to the notch 111. Thus, when the hook plate 21 does not apply force to the first rolling part 32, the first elastic part 35 applies force to the baffle 31, keeping the baffle 31 in an upright state, thereby blocking the AGV8.

[0069] Optionally, the first elastic part 35 is a torsion spring, which is sleeved on the first rotating shaft 37. One end of the torsion spring is connected to the connecting plate 36, and the other end is connected to the baffle 31.

[0070] In addition, such as Figure 9 and Figure 10 As shown, a first counterweight 34 is provided on the side of the baffle 31 opposite to the recess 111. The first counterweight 34 is located at the lower end of the baffle 31. In this way, the first counterweight 34 can increase the weight of the lower end of the baffle 31, so that the center of the first blocking mechanism 3 is always kept on the right side of the baffle 31, thereby ensuring that the baffle 31 is in an upright state when the first rolling part 32 is not in contact with the hook plate 21.

[0071] Optionally, the first counterweight 34 is a counterweight block.

[0072] In addition, the first rolling part 32 includes two rollers, which are respectively disposed on both sides of the first counterweight part 34. When the hook plate 21 contacts the first rolling part 32, the two rollers can rotate relative to the hook plate 21.

[0073] In the embodiments of this application, such as Figure 7 , 8 As shown in Figures 11 and 12, the second blocking mechanism 4 is disposed near the end face of the groove 13 in a third-direction orientation. The second blocking mechanism 4 includes a support portion 41, a sliding portion 42, and a second elastic portion 43. The support portion 41 is fixed to the groove 13, the sliding portion 42 is slidably connected to the support portion 41, and the two ends of the second elastic portion 43 abut against the support portion 41 and the sliding portion 42, respectively. When the bearing plane is coplanar with the second plane, the second elastic portion 43 is compressed, and the sliding portion 42 abuts against the bearing platform 2. At this time, the AGV8 can move from the lower step 12 onto the bearing platform 2. When the bearing plane is higher than the second plane, the second elastic portion 43 extends, and the second elastic portion 43 pushes the sliding portion 42 upward, so that a portion of the sliding portion 42 is higher than the second plane. The size of the portion of the sliding portion 42 above the second plane is greater than the height of the safety contact edge of the AGV8, and the size of the portion of the sliding portion 42 above the second plane is greater than the height of the chassis. At this time, the sliding portion 42 can block the AGV8 to prevent the AGV8 from falling from the lower step 12 into the groove 13.

[0074] Furthermore, the support portion 41 includes a limiting channel that extends along the first direction L1, and the sliding portion 42 can slide within the limiting channel. The second elastic portion 43 is located within the limiting channel. Thus, the support portion 41 can guide the movement of the sliding portion 42 to ensure that the sliding portion 42 can extend.

[0075] Optionally, both the support portion 41 and the sliding portion 42 are cubic in shape, the cross-sectional area of ​​the support portion 41 is larger than the cross-sectional area of ​​the sliding portion 42, and the second elastic portion 43 is a compression spring.

[0076] In addition, the second blocking mechanism 4 also includes a guide block 44, a limiting block 45, a base plate 46, and a top plate 47. The base plate 46 is fixed to the bottom of the support part 41 and can be fixed to the third plane of the groove 13 by screws. The top plate 47 fixes the top of the sliding part 42 and is used to abut against the bearing platform 2. A guide groove is provided on the side wall of the support part 41. The guide block 44 is fixed on the outer wall of the sliding part 42 and is located in the guide groove. During the movement of the sliding part 42, the guide block 44 moves in the guide groove. A limiting block 45 is provided at the upper end of the support part 41. The limiting block 45 is located at the end of the limiting groove and can abut against the guide block, thereby limiting the movement of the guide block 44 to prevent the sliding part 42 from sliding out of the limiting channel of the support part 41.

[0077] Optionally, there are two second blocking mechanisms 4, which are spaced apart along the second direction L2.

[0078] In the embodiments of this application, the third blocking mechanism 5 is disposed at one end of the carrying platform 2 in the third direction L3, and the third blocking mechanism 5 and the first blocking mechanism 3 are respectively located on both sides of the carrying platform 2 in the third direction L3. The third blocking mechanism 5 includes an abutment plate 51, the middle part of which is hinged to the carrying platform 2, allowing the abutment plate 51 to rotate relative to the platform. The carrying platform 2 includes an extension through the carrying platform 2 along the first direction L1. When the carrying plane is higher than the second plane, a portion of the abutment plate 51 extends out from the extension. That is, when the lifting platform is rising, falling, or in a high position, a portion of the abutment plate 51 can extend out from the extension. The extension dimension of the abutment plate 51 relative to the extension is greater than the height of the safety contact edge of the AGV8, and the extension dimension of the abutment plate 51 relative to the extension is greater than the height of the chassis, thereby preventing the AGV8 on the carrying platform 2 from falling.

[0079] In addition, the third blocking mechanism 5 includes a mounting base 52, which is fixed to the bottom of the support platform 2 by screws. The abutment plate 51 is connected to the mounting base 52 via a second rotating shaft 53, so that the abutment plate 51 can rotate relative to the support platform 2.

[0080] like Figure 13 and 14 As shown, the third blocking mechanism 5 also includes a second counterweight 55, which is disposed at the first end (lower end) of the abutment plate 51 and connected to the abutment plate 51 via a connecting rod 57. The second end (upper end) of the abutment plate 51 can extend relative to the protrusion opening. By setting the second counterweight 55, the center of gravity of the abutment plate 51 is made closer to the first end of the abutment plate 51, so that the second end of the abutment plate 51 can extend from the protrusion opening without the action of external force.

[0081] In addition, the third blocking mechanism 5 also includes a second rolling part 56 and a third elastic part 54. The second rolling part 56 is fixed to the first end of the abutment plate 51. When the second rolling part 56 abuts against the groove 13, the second rolling part 56 can move relative to the groove 13, thereby driving the abutment plate 51 to rotate. One end of the third elastic part 54 is connected to the mounting base 52, and the other end of the third elastic part 54 is connected to the first end of the abutment plate 51. The third elastic part 54 is in an extended state, which allows the third elastic part 54 to apply force to the abutment plate 51, so that the second end of the abutment plate 51 can extend out from the outlet.

[0082] Optionally, the third elastic part 54 is a tension spring.

[0083] Optionally, a sliding block 61 is provided on the third plane of the groove 13. The sliding block 61 is used to cooperate with the second rolling part 56 to make the abutment plate 51 rotate. When the bearing plane is coplanar with the first plane, the second rolling part 56 does not contact the sliding block 61. At this time, under the action of the second counterweight part 55 and the third elastic part 54, a portion of the abutment plate 51 extends out from the protrusion. When the bearing platform 2 descends to the point where the sliding block 61 contacts the abutment plate 51, a portion of the abutment plate 51 still extends out relative to the protrusion. When the bearing platform 2 continues to descend, the second rolling part 56 rotates relative to the sliding block 61, and at the same time, the second fixing part moves along the sliding block 61, causing the abutment plate 51 to rotate. The abutment plate 51 gradually descends relative to the bearing plane. When the bearing platform 2 descends to the point where the bearing surface is coplanar with the second plane, the abutment plate 51 no longer extends out relative to the protrusion.

[0084] In the embodiments of this application, the lifting platform further includes two guard plates 7, which are located on both sides of the bearing plane in the second direction L2. The guard plates 7 extend from the bearing plane in the direction opposite to the groove 13. The height of the two guard plates 7 is greater than the height of the safety contact edge of the AGV8, and the height of the two guard plates 7 is greater than the height of the chassis, which can prevent the AGV8 from falling off the bearing platform 2.

[0085] Furthermore, Figure 1 The diagram shows the connection between the higher-order part 11 and the lower-order part 12. When the higher-order part 11 and the lower-order part 12 are spaced apart in the first direction L1 (i.e., the higher-order part 11 is suspended relative to the lower-order part 12 and there is no connection between them), the lifting platform also includes a fourth blocking mechanism. The fourth blocking mechanism is fixed to the bearing platform 2. The third blocking mechanism 5 and the fourth blocking mechanism are located on both sides of the bearing platform 2 in the third direction L3, respectively. When the bearing plane is coplanar with the first plane, the fourth blocking mechanism is lower than the bearing plane, so that the AGV8 can move between the bearing plane and the first plane. When the bearing plane is lower than the first plane, the fourth blocking mechanism is higher than the bearing plane, thereby preventing the AGV8 from falling from the higher-order part 11.

[0086] Optionally, the fourth blocking mechanism and the third blocking mechanism 5 are symmetrically arranged on the bearing platform 2. The structure of the fourth blocking mechanism is similar to that of the third blocking mechanism 5. In the fourth blocking mechanism, the second rolling part is located at the upper end of the abutment plate, the second counterweight part is located at the lower end of the abutment plate, and the two ends of the third elastic part are connected to the abutment plate and the mounting base, respectively. Under the action of the second counterweight part and the third elastic part, part of the abutment plate protrudes upward relative to the bearing plane. A sliding block is also provided on the upper part 11. After the second rolling part makes contact with the sliding block, the second rolling part rotates relative to the sliding block and moves along the sliding block, so that the abutment plate descends relative to the bearing plane. When the bearing plane is aligned with the first plane, the abutment plate is no longer higher than the bearing plane. By setting a fourth blocking mechanism, it is possible to prevent the AGV8 from falling from the opposite side when it fails to stop due to a signal failure when it is on the carrying platform from the second plane. When the carrying platform 2 rises, the fourth blocking mechanism is higher than the carrying plane, which can prevent the AGV8 from falling off the carrying platform. When the carrying platform 2 rises and the carrying plane is coplanar with the first plane, the fourth blocking mechanism is lower than the carrying plane, which does not affect the AGV8 from moving the carrying platform from the first plane or the carrying platform from the first plane to the first plane.

[0087] In the embodiments of this application, the driving mechanism may be a scissor lift mechanism, a lead screw lifting mechanism, etc.

[0088] During the lifting and lowering process of this application, when the bearing plane and the second plane are coplanar, the baffle 31 in the first blocking mechanism 3 is in an upright state, with a portion of the baffle 31 higher than the first plane, thus preventing the AGV8 from falling from the higher step 11. The second elastic part 43 in the second blocking mechanism 4 is compressed, and the sliding part 42 abuts against the bearing platform 2. The sliding part 42 is lower than the second plane, allowing the AGV8 to move from the lower step 12 onto the bearing platform 2. The second rolling part 56 in the third blocking mechanism 5 abuts against the sliding block 61, with the abutment plate 51 lower than the second plane.

[0089] As the bearing plane moves from the second plane to the first plane, the hook plate 21 on the bearing platform 2 gradually moves toward the first rolling part 32 of the first blocking mechanism 3. When the hook plate 21 contacts the first rolling part 32, the hook plate 21 applies force to the first rolling part 32. Then the hook plate 21 continues to move upward, and the baffle 31 gradually rotates. At this time, part of the baffle 31 is still higher than the first plane, which can prevent the AGV8 from falling from the higher part 11. The second elastic part 43 of the second blocking mechanism 4 gradually extends, so that part of the sliding part 42 is higher than the second plane. When the second elastic part 43 extends to its maximum length, the second blocking mechanism 4 reaches its maximum length in the first direction L1. Then the bearing platform 2 continues to rise, and the sliding part 42 no longer abuts against the bearing platform 2. The second blocking mechanism 4 maintains its maximum length in the first direction L1, and part of the sliding part 42 is still higher than the second plane to prevent the AGV8 from falling from the lower part 12 into the groove 13. The second rolling part 56 of the third blocking mechanism 5 slides along the sliding block 61. Under the action of the third elastic part 54, the abutment plate 51 rotates and a portion of the abutment plate 51 extends out relative to the protrusion. When the carrying platform 2 rises to the point where the second rolling part 56 and the sliding block 61 no longer abut, the abutment plate 51 reaches its maximum extension length. The carrying platform 2 continues to rise, and the abutment plate 51 maintains its maximum extension length to prevent the AGV8 from falling off the carrying platform 2.

[0090] When the bearing plane and the first plane are coplanar, the baffle 31 is located within the recess 111 and is lower than the first plane. At this time, the AGV8 can move from the first plane to the bearing plane, thereby realizing the AGV8 transport. The second blocking mechanism 4 maintains its maximum length in the first direction L1, and the abutment plate 51 of the third blocking mechanism 5 maintains its maximum extension length.

[0091] As the bearing plane moves from the first plane to the second plane, the hook plate 21 on the bearing platform 2 gradually moves away from the first rolling part 32 of the first blocking mechanism 3. When the hook plate 21 contacts the first rolling part 32, part of the baffle 31 is higher than the first plane. When the hook plate 21 no longer contacts the first rolling part 32, the baffle 31 is in an upright state, which can prevent the AGV8 from falling from the upper part 11. After the bearing platform 2 descends to the point where the sliding part 42 abuts against the bearing platform 2, the bearing platform 2 continues to descend, the second elastic part 43 is compressed, and the length of the second blocking mechanism 4 in the first direction L1 decreases. At this time, part of the sliding part 42 is still higher than the second plane. When the bearing plane and the second plane are coplanar, the second blocking mechanism reaches its minimum length in the first direction L1, and the sliding part 42 is lower than the second plane. After the second rolling part 56 of the third blocking mechanism 5 moves to contact the sliding block 62, the carrying platform 2 continues to descend, causing the second rolling part 56 to slide along the sliding block 61. The abutment plate 51 rotates, and the length of the abutment plate 51 extending relative to the protrusion decreases. When the carrying plane and the second plane are coplanar, the abutment plate 51 no longer extends relative to the protrusion.

[0092] The first blocking mechanism 3, the second blocking mechanism 4, and the third blocking mechanism 5 are all purely mechanical structures, requiring no external power or control signals. All actions are achieved by their own structures and by following the movement of the carrier platform 2, and are not affected by signal interference. The first blocking mechanism 3, the second blocking mechanism 4, and the third blocking mechanism 5 operate smoothly and reliably during the lifting process, ensuring the safety of AGV8 handling.

[0093] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A lifting platform, characterized in that, The lifting platform is used to drive the AGV to move on the carrying platform. The carrying platform includes a high-level part and a low-level part. The low-level part has a groove. The high-level part includes a first plane. The low-level part includes a second plane. The first plane is higher than the second plane in a first direction. The lifting platform includes a drive mechanism, a bearing platform, a first blocking mechanism, a second blocking mechanism, and a third blocking mechanism. The drive mechanism is fixed to the groove and connected to the bearing platform to drive the bearing platform to move along the first direction. The bearing platform has a bearing plane. The first blocking mechanism is disposed on the higher-level portion, and a portion of the first blocking mechanism is rotatable relative to the higher-level portion; the second blocking mechanism is connected to the groove, and the length of the second blocking mechanism in the first direction is adjustable; the third blocking mechanism is hinged to the support platform. When the bearing plane and the second plane are coplanar, a portion of the first blocking mechanism is higher than the first plane, while both the second blocking mechanism and the third blocking mechanism are lower than the second plane. When the bearing plane is located between the first plane and the second plane, a portion of the first blocking mechanism is higher than the first plane, a portion of the second blocking mechanism is higher than the second plane, and a portion of the third blocking mechanism is higher than the bearing plane; When the bearing plane is coplanar with the first plane, the first blocking mechanism abuts against the bearing platform. The height of the first blocking mechanism in the first direction is lower than the first plane, a portion of the second blocking mechanism is higher than the second plane, and a portion of the third blocking mechanism is higher than the second plane. The first blocking mechanism includes a baffle and a first rolling part, the baffle being hinged to the higher-order part, and the first rolling part being fixed to the baffle; The higher-level portion includes a notch located on the side of the baffle opposite to the rolling portion. When the bearing plane is coplanar with the first plane, the first rolling portion abuts against the bearing platform, and the baffle is located inside the notch. The second blocking mechanism includes a support part, a sliding part, and a second elastic part. The support part is fixed to the groove, the sliding part is slidably connected to the support part, and the two ends of the second elastic part abut against the support part and the sliding part, respectively. When the bearing plane and the second plane are coplanar, the second elastic part is compressed, and the sliding part abuts against the bearing platform; When the bearing plane is higher than the second plane, the second elastic portion extends, and a portion of the sliding portion is higher than the second plane.

2. The lifting platform according to claim 1, characterized in that, The first blocking mechanism includes a first elastic part, one end of which abuts against the higher-order part, and the other end of which abuts against the baffle. The first elastic part is capable of applying a force to the baffle in a direction opposite to the notch.

3. The lifting platform according to claim 1, characterized in that, The support includes a limiting channel that extends along the first direction, the sliding part is capable of sliding within the limiting channel, and the second elastic part is located within the limiting channel.

4. The lifting platform according to claim 1, characterized in that, The third blocking mechanism includes an abutment plate and a mounting base, the mounting base being fixed to the bearing platform, and the middle part of the abutment plate being hinged to the mounting base; The support platform includes an extension through the support platform along the first direction, and when the support plane is higher than the second plane, a portion of the abutment plate extends out from the extension.

5. The lifting platform according to claim 4, characterized in that, The third blocking mechanism further includes a second counterweight, which is disposed at the first end of the abutment plate, and the second end of the abutment plate can extend relative to the protrusion.

6. The lifting platform according to claim 5, characterized in that, The third blocking mechanism further includes a second rolling part and a third elastic part. The second rolling part is fixed to the first end of the abutment plate. When the rolling part abuts against the groove, the second rolling part can move relative to the groove, thereby driving the abutment plate to rotate. One end of the third elastic part is connected to the mounting base, and the other end of the third elastic part is connected to the first end of the abutment plate. The third elastic part is in an extended state.

7. The lifting platform according to any one of claims 1-6, characterized in that, The lifting platform also includes two guard plates, which are located on both sides of the bearing plane in the second direction. The guard plates extend from the bearing plane in a direction opposite to the groove, and the second direction is perpendicular to the first direction.

8. The lifting platform according to claim 7, characterized in that, The lifting platform further includes a fourth blocking mechanism, which is fixed to the bearing platform and is located at one end of the bearing platform in a third direction, which is perpendicular to the first direction and the second direction respectively. When the bearing plane is coplanar with the first plane, the fourth blocking mechanism is lower than the bearing plane; When the bearing plane is lower than the first plane, the fourth blocking mechanism is higher than the bearing plane.

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