A side-hung warehouse material picking and placing stack system

Abstract

The application discloses a side-hung warehouse taking and placing material stacking system, which comprises a goods shelf and a side-hung warehouse taking and placing material stacking machine installed on the goods shelf, and the side-hung warehouse taking and placing material stacking machine is located in a warehouse channel in the middle of the goods shelf; the side-hung warehouse taking and placing material stacking machine comprises a bidirectional fork telescopic mechanism for taking and placing materials, a horizontal movement mechanism for driving the bidirectional fork telescopic mechanism to move in a horizontal direction, and a vertical lifting mechanism for driving the bidirectional fork telescopic mechanism to lift, the vertical lifting mechanism is installed on the goods shelf, the horizontal movement mechanism is installed on a lifting end of the vertical lifting mechanism, and the bidirectional fork telescopic mechanism is installed on a horizontal movement end of the horizontal movement mechanism. The side-hung warehouse taking and placing material stacking machine is directly fixed on the goods shelf, the requirement for a site is reduced, and the overall stability and safety are high.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of warehouse stacking equipment, in particular to a side-hung warehouse material taking and stacking system. BACKGROUND

[0002] The stacking mechanism is a crucial component of an intelligent warehouse system, which is mainly responsible for transporting goods that need to be accessed from the import and export to the storage position of the goods shelf, or retrieving the import and export from the storage position. The design and operation mode of the stacking mechanism directly affect the efficiency, safety and stability of the warehouse system.

[0003] At present, the stacking mechanisms on the market have various designs, but the most common mechanism is mainly composed of a horizontal movement mechanism, a lifting mechanism and a fork mechanism. This design enables the lifting mechanism to move in both horizontal and vertical directions, improving the flexibility and efficiency of the stacking mechanism. However, the horizontal movement mechanism is usually installed on the ground, which requires adjusting the levelness of the mechanism to maintain its stable operation under different site conditions. This design has certain requirements for the installation site, and if the site ground is uneven, it may be difficult to install and debug. In addition, the stacking mechanism of this design may exhibit instability in horizontal movement when handling high-lift warehouses, and is prone to shaking, which may affect the safe storage and accurate retrieval of goods. Therefore, for high-lift warehouses, the design of the stacking mechanism needs to be further improved to improve its stability and safety. SUMMARY

[0004] In order to overcome the problems of the existing stacking mechanism, such as difficulty in installation due to large unevenness of the ground, and instability in horizontal movement and easy shaking when the warehouse has a high lifting stroke, the present application provides a side-hung warehouse material taking and stacking system.

[0005] The technical solution of the present application is as follows:

[0006] A side-hung warehouse material taking and stacking system, comprising a goods shelf and a side-hung warehouse material taking and stacking machine installed on the goods shelf, and the side-hung warehouse material taking and stacking machine is located in the warehouse passage in the middle of the goods shelf.

[0007] The side-hung warehouse material taking and stacking machine comprises a bidirectional fork telescopic mechanism for taking and placing materials, a horizontal movement mechanism for driving the bidirectional fork telescopic mechanism to move in the horizontal direction, and a vertical lifting mechanism for driving the bidirectional fork telescopic mechanism to lift, the vertical lifting mechanism is installed on the goods shelf, the horizontal movement mechanism is installed on the lifting end of the vertical lifting mechanism, and the bidirectional fork telescopic mechanism is installed on the horizontal movement end of the horizontal movement mechanism.

[0008] According to the side-hung warehouse material taking and placing stacking system, the vertical lifting mechanism comprises two oppositely arranged lifting modules, and the horizontal movement mechanism is installed between lifting ends of the two lifting modules.

[0009] Further, at least one of the lifting modules is provided with a safety anti-falling mechanism, which is used to block the horizontal movement mechanism from falling when the horizontal movement mechanism is lifted to any height by the lifting module.

[0010] Further, the safety anti-falling mechanism comprises a safety pin bottom plate fixed with the lifting module, a safety pin lifting plate fixed with the horizontal movement mechanism, and a safety pin, the safety pin bottom plate and the safety pin lifting plate are vertically opposite, the safety pin bottom plate is provided with a plurality of first pin holes for inserting the safety pin along the height direction, and the safety pin lifting plate is provided with a plurality of second pin holes for inserting the safety pin and opposite to the first pin holes along the height direction.

[0011] Further, the lifting end of the lifting module is provided with a vertical sliding seat, the vertical sliding seat is connected with one end of the horizontal movement mechanism corresponding to the horizontal movement mechanism, and the safety pin lifting plate is fixed with the horizontal movement mechanism through the vertical sliding seat.

[0012] Further, the end of each second pin hole is provided with a safety pin inductor for sensing whether the safety pin is inserted.

[0013] Further, the safety pin lifting plate is provided with a sensing groove corresponding to the end position of each second pin hole, the safety pin inductor is fixed on one side of the corresponding sensing groove through a fixing piece, and the sensing end of the safety pin inductor faces the sensing groove.

[0014] Further, the opening of the warehouse passage is provided with an automatic warehouse door, when any safety pin inductor senses that the safety pin is inserted, the automatic warehouse door is opened.

[0015] Further, the second pin hole is a long hole, and the second pin hole is a round hole.

[0016] Further, the distance between the centers of the semicircles at the two ends of the long hole is greater than half the distance between the centers of the adjacent two round holes, and the distance between the centers of the adjacent semicircles of the adjacent two long holes is less than the distance between the centers of the adjacent two round holes.

[0017] Further, the safety pin bottom plate is provided with a plurality of first fixing holes along the height direction, and the safety pin lifting plate is provided with a plurality of second fixing holes along the height direction.

[0018] According to the side-hung warehouse material taking and placing stacking system, the load bearing component of the two-way fork telescopic mechanism is provided with a fork overload detection mechanism, the fork overload detection mechanism comprises a bottom plate, a load bearing plate arranged above the bottom plate for placing a load bearing object, and an elastic assembly and an overload detection sensor arranged between the bottom plate and the load bearing plate, the elastic assembly is located at the four corner positions of the bottom plate and the load bearing plate, the overload detection sensor is located at the center position of the bottom plate and the load bearing plate, and the load bearing plate is pressed on the sensing end of the overload detection sensor.

[0019] Further, a plurality of limiting blocks for limiting the placement position of the load bearing object are arranged on the load bearing plate.

[0020] Further, the limiting blocks are four in total and are arranged at the four corner positions of the load bearing plate.

[0021] Further, a limiting step is arranged on the inner side of the limiting block.

[0022] Further, a plurality of third fixing holes are arranged on the outer side of the limiting block, and the third fixing holes are used in cooperation with first screws to fix the limiting blocks on the load bearing plate.

[0023] Further, the elastic assembly comprises a vertical guide rod, a compression spring sleeved outside the lower end of the guide rod, a guide sleeve sleeved outside the upper end of the guide rod, and a stopper arranged at the top of the guide rod, the lower end of the guide rod is fixed with the bottom plate, the upper end of the guide rod penetrates through the load bearing plate, the load bearing plate is provided with an opening through which the upper end of the guide rod penetrates, the lower end of the guide sleeve is arranged in the opening, the lower end of the compression spring abuts against the top surface of the bottom plate, the upper end of the compression spring abuts against the bottom surface of the load bearing plate, and the bottom surface of the stopper abuts against the top surface of the guide sleeve.

[0024] Further, the lower end of the guide rod is fixed with the bottom plate through a second screw.

[0025] Further, the upper end of the guide sleeve is fixed with the load bearing plate through a third screw.

[0026] Further, the upper end of the guide sleeve is provided with a plurality of fourth fixing holes, and the fourth fixing holes are used in cooperation with the third screw to fix the upper end of the guide sleeve on the load bearing plate.

[0027] Further, the stopper is fixed at the top of the guide rod through a fourth screw.

[0028] Further, the stopper is provided with a plurality of fifth fixing holes, and the fifth fixing holes are used in cooperation with the fourth screw to fix the stopper at the top of the guide rod.

[0029] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0030] 1. By installing the vertical lifting mechanism on the shelf, the horizontal movement mechanism on the lifting end of the vertical lifting mechanism, and the two-way fork extension mechanism on the horizontal movement end of the horizontal movement mechanism, the side-mounted warehouse picking and unloading stacker is directly fixed on the shelf, reducing the site requirements and making it suitable for sites with various conditions.

[0031] 2. The overall layout of the hanging-type warehouse stacker crane can effectively solve the problem of instability and swaying during horizontal movement when handling warehouses with high lifting strokes, thus improving the overall stability and safety.

[0032] 3. The side-mounted storage and material handling stacker is also equipped with a safety anti-fall mechanism. The safety anti-fall mechanism can prevent the horizontal movement mechanism from falling when it is raised and lowered to any height by the lifting module, thus ensuring the safety of personnel entering the storage passage.

[0033] 4. By installing an overload detection mechanism on the load-bearing component of the bidirectional fork extension mechanism, the weight of the load can be directly detected, playing a role in weight detection, weight limitation, and safety assurance.

[0034] 5. The fork overload detection mechanism has a simple structure and few parts, which reduces costs and enhances stability and reliability. By setting an elastic component between the load-bearing plate and the base plate, it ensures that the load-bearing plate is balanced when unloaded and is not jammed when loaded, thus ensuring the accuracy of overload detection.

[0035] 6. The overload detection sensor of the fork overload detection mechanism bears less additional weight and has a smaller selected size, further reducing costs. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 This is a top view of the side-mounted warehouse stacker crane connected to the rack in this invention;

[0038] Figure 2 This is a side view of the connection between the side-mounted warehouse stacker crane and the rack in this invention;

[0039] Figure 3 This is a partial schematic diagram showing the connection between the side-mounted warehouse material handling stacker and the rack in this invention;

[0040] Figure 4 Structure diagram of the side-hung warehouse material taking and placing stacker in the present application;

[0041] Figure 5 Structure diagram of the side-hung warehouse material taking and placing stacker in the present application;

[0042] Figure 6 Structure diagram of the side-hung warehouse material taking and placing stacker in the present application; Figure 5 Enlarged view of part A in the present application;

[0043] Figure 7 Structure diagram of the safety pin bottom plate in the present application;

[0044] Figure 8 Front view of the safety pin bottom plate in the present application;

[0045] Figure 9 Structure diagram of the safety pin lifting plate in the present application;

[0046] Figure 10 Front view of the safety pin lifting plate in the present application;

[0047] Figure 11 Structure diagram of the fork overload detection mechanism in the present application;

[0048] Figure 12 Structure diagram of the fork overload detection mechanism in the present application;

[0049] Figure 13 Side view of the fork overload detection mechanism in the present application;

[0050] Figure 14 Partial sectional view of the elastic component of the fork overload detection mechanism in the present application and the connection with the bottom plate and the load carrier.

[0051] In the drawings,

[0052] 1, shelf; 11, warehouse channel; 12, storage cavity; 2, side-hung warehouse picking and placing machine; 21, bidirectional fork telescopic mechanism; 22, horizontal motion mechanism; 23, vertical lifting mechanism; 231, lifting module; 232, vertical sliding seat; 24, safety anti-falling mechanism; 241, safety pin bottom plate; 2411, first bolt hole; 2412, first fixed hole; 242, safety pin lifting plate; 2421, second bolt hole; 2422, induction groove; 2423, second fixed hole; 243, safety pin; 244, safety pin inductor; 2441, fixing piece; 3, fork overload detection mechanism; 31, bottom plate; 32, carrier; 33, carrier plate; 34, elastic assembly; 341, guide rod; 342, compression spring; 343, guide sleeve; 3431, fourth fixed hole; 344, stop block; 3441, fifth fixed hole; 35, overload detection inductor; 36, limiting block; 361, limiting step; 362, guide inclined surface; 363, third fixed hole; 37, second screw; 38, third screw; 39, fourth screw. DETAILED DESCRIPTION

[0053] In order to make the technical problems to be solved by the present application, technical solutions and beneficial effects clearer, the present application will be further described in detail below in combination with the drawings and embodiments. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. It is declared at the same time that the following described embodiments are only used to explain the present application, and do not limit the present application.

[0054] It should be noted that the terms "mounting", "setting", "connecting", "fixing" and the like should be understood broadly, for example, can be fixed connection, or detachable connection, or integrated; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly placed when the product of the application is used, or the orientation or positional relationship commonly understood by those skilled in the art, or the orientation or positional relationship commonly placed when the product of the application is used, which is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, structure and operation, and therefore cannot be understood as limiting the present application. The terms "first", "second" are only used for the purpose of convenience, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically limited.

[0055] Please refer toFigures 1 to 5 The embodiment provides a side-hung warehouse taking and placing material stacking system, which comprises a shelf 1 and a side-hung warehouse taking and placing material stacking machine 2 installed on the shelf 1, a warehouse channel 11 is arranged in the middle of the shelf 1, storage cavities 12 of the shelf 1 are located on both sides of the warehouse channel 11, and the side-hung warehouse taking and placing material stacking machine 2 is located in the warehouse channel 11. Wherein the side-hung warehouse taking and placing material stacking machine 2 comprises a bidirectional fork telescopic mechanism 21 for taking and placing materials, a horizontal movement mechanism 22 for driving the bidirectional fork telescopic mechanism 21 to move in a horizontal direction, and a vertical lifting mechanism 23 for driving the bidirectional fork telescopic mechanism 21 to lift, the vertical lifting mechanism 23 is installed on the shelf 1, the horizontal movement mechanism 22 is installed on a lifting end of the vertical lifting mechanism 23, and the bidirectional fork telescopic mechanism 21 is installed on a horizontal movement end of the horizontal movement mechanism 22. After the bidirectional fork telescopic mechanism 21 takes the goods, the bidirectional fork telescopic mechanism 21 is moved transversely in the warehouse channel 11 through the horizontal movement mechanism 22 and is moved vertically in the warehouse channel 11 through the vertical lifting mechanism 23, so that the goods are quickly and accurately carried into the storage cavity 12 of any shelf 1.

[0056] The vertical lifting mechanism 23 is installed on the shelf 1, the horizontal movement mechanism 22 is installed on the lifting end of the vertical lifting mechanism 23, and the bidirectional fork telescopic mechanism 21 is installed on the horizontal movement end of the horizontal movement mechanism 22, so that the side-hung warehouse taking and placing material stacking machine 2 is directly fixed on the shelf 1, the requirement for the site is reduced, and the side-hung warehouse taking and placing material stacking machine 2 can be used in various sites; meanwhile, the overall layout mode of the side-hung warehouse taking and placing material stacking machine 2 can also effectively solve the problems of instability and easy shaking of horizontal movement when high lifting travel of the warehouse is processed, improve the overall stability and safety, and be suitable for occasions with short horizontal movement travel and high lifting travel.

[0057] Please refer to Figure 4 In the embodiment, the vertical lifting mechanism 23 comprises two oppositely arranged lifting modules 231, the horizontal movement mechanism 22 is installed between lifting ends of the two lifting modules 231, the lifting end of the lifting module 231 is provided with a vertical sliding seat 232, and the vertical sliding seat 232 is connected with one end of the horizontal movement mechanism 22 in correspondence. The two lifting modules 231 are arranged to drive the horizontal movement mechanism 22 to lift, so that the side-hung warehouse taking and placing material stacking machine 2 can bear heavier goods and can further ensure the stability of horizontal movement when the lifting travel of the warehouse is too high.

[0058] Please refer to Figures 4 to 10In the embodiment, the at least one lifting module 231 is provided with a safety anti-falling mechanism 24, which is used to block the horizontal movement mechanism 22 from falling when the horizontal movement mechanism 22 is lifted to any height by the lifting module 231. When the horizontal movement mechanism 22 is lifted to a higher position, for safety reasons, a person cannot directly enter the storage channel 11, and the safety anti-falling mechanism 24 needs to be started to prevent the horizontal movement mechanism 22 from falling accidentally, and then the person can enter the storage channel 11 to perform various operations, such as safety maintenance, debugging, etc. Specifically, the safety anti-falling mechanism 24 includes a safety pin bottom plate 241 fixed with the lifting module 231, a safety pin lifting plate 242 fixed with the horizontal movement mechanism 22, and a safety pin 243. The safety pin bottom plate 241 and the safety pin lifting plate 242 are vertically opposite to each other, the safety pin lifting plate 242 is fixed with the horizontal movement mechanism 22 through the vertical sliding seat 232, so that the safety pin lifting plate 242 can be lifted synchronously with the horizontal movement mechanism 22 under the driving of the lifting module 231, and the safety pin bottom plate 241 is provided with a plurality of first pin holes 2411 for the safety pin 243 to insert along the height direction of the safety pin bottom plate 241. The safety pin lifting plate 242 is provided with a plurality of (for example, 3) second pin holes 2421 for the safety pin 243 to insert and opposite to the first pin holes 2411 along the height direction of the safety pin lifting plate 242. When the horizontal movement mechanism 22 is lifted to any height, at least one first pin hole 2411 can pass through the safety pin bottom plate 241 and insert into one second pin hole 2421 of the safety pin lifting plate 242, so as to block the horizontal movement mechanism 22 from falling.

[0059] In order to ensure that the safety pin lifting plate 242 has one or two first pin holes 2411 that can pass through the safety pin bottom plate 241 and insert into one second pin hole 2421 of the safety pin lifting plate 242 at any height, in the embodiment, the first pin hole 2411 is a long hole, and the second pin hole 2421 is a round hole. The center distance A of the semicircle at both ends of the long hole is greater than half of the center distance B of the adjacent two round holes, and the center distance C of the adjacent semicircles of the adjacent two long holes is less than the center distance B of the adjacent two round holes. For example, the center distance A of the semicircle at both ends of the long hole is 58mm, the center distance B of the adjacent two round holes is 115mm, and the center distance C of the adjacent semicircles of the adjacent two long holes is 114.5mm.

[0060] In addition, the end of each second bolt hole 2421 is provided with a safety pin sensor 244 for sensing whether the safety pin 243 is inserted, and any safety pin sensor 244 sensing that the safety pin 243 is inserted is considered safe. Specifically, the safety pin lifting plate 242 is provided with a sensing groove 2422 corresponding to the end position of each second bolt hole 2421, the safety pin sensor 244 is fixed on one side of the corresponding sensing groove 2422 by a fixing member 2441, and the sensing end of the safety pin sensor 244 faces the sensing groove 2422. When the safety pin 243 is inserted into a certain second bolt hole 2421 of the safety pin lifting plate 242 through the safety pin bottom plate 241, the end of the safety pin 243 will pass through the second bolt hole 2421 and enter the corresponding sensing groove 2422, at this time the safety pin sensor 244 on one side of the sensing groove 2422 will sense that the safety pin 243 is inserted, and will send a corresponding signal to remind the user that the safety pin 243 is inserted, and the user can enter the storage channel 11 to perform various operations.

[0061] Further, the safety pin bottom plate 241 is provided with a plurality of first fixing holes 2412 in the height direction, and the first fixing holes 2412 can be fixed on the lifting module 231 by cooperating with screws. The safety pin lifting plate 242 is provided with a plurality of second fixing holes 2423 in the height direction, and the second fixing holes 2423 can be fixed on the horizontal movement mechanism 22 by cooperating with screws.

[0062] In one embodiment, in order to improve the safety of entering the storage channel 11 to perform various operations, an automatic storage door can also be provided at the opening of the storage channel 11, and the automatic storage door will only be opened when any safety pin sensor 244 senses that the safety pin 243 is inserted. In addition, the automatic storage door is provided with a window for a hand to pass through, so that the hand can smoothly insert the safety pin 243 into the corresponding first bolt hole 2411 and second bolt hole 2421 through the window.

[0063] Please refer to Figures 11 to 13In one embodiment, the overload detection mechanism 3 is installed on the load bearing part of the bidirectional fork telescopic mechanism, and includes a bottom plate 31, a load bearing plate 33 arranged above the bottom plate 31 for placing a load 32, an elastic assembly 34 and an overload detection sensor 35 arranged between the bottom plate 31 and the load bearing plate 33. The overload detection mechanism 3 is installed on the load bearing part of the bidirectional fork telescopic mechanism through the bottom plate 31. The elastic assembly 34 is arranged at the four corners of the bottom plate 31 and the load bearing plate 33, and the overload detection sensor 35 is arranged at the center of the bottom plate 31 and the load bearing plate 33. The load bearing plate 33 is pressed on the sensing end of the overload detection sensor 35. The elastic assembly 34 is used to lift the load bearing plate 33, so that the load bearing plate 33 is in a horizontal state when the load bearing plate 33 is empty, and the overload detection sensor 35 is zeroed (i.e., the detected value is zero) when the load bearing plate 33 is empty. When the load 32 is placed on the load bearing plate 33, the value detected by the overload detection sensor 35 is the weight of the load 32.

[0064] Please refer to Figure 12 、 Figure 13 The load bearing plate 33 is provided with a plurality of limiting blocks 36 for limiting the placement position of the load 32. Preferably, the limiting blocks 36 are four in number and are arranged at the four corners of the load bearing plate 33. The four limiting blocks 36 can well limit the placement position of the load 32 on the load bearing plate 33.

[0065] Specifically, the inner side of the limiting block 36 is provided with a limiting step 361, and the upper end of the limiting step 361 is provided with a guide slope 362. The load 32 can be quickly placed on the limiting step 361 along the guide slope 362, so as to limit the placement position of the load 32. In addition, the outer side of the limiting block 36 is provided with a plurality of third fixing holes 363. The third fixing holes 363 cooperate with the first screw to fix the limiting block 36 on the load bearing plate 33. Preferably, the number of the third fixing holes 363 is two. Of course, in other embodiments, the number of the third fixing holes 363 can be one, three or more, which is not limited in the present application, and can be set according to the actual situation by those skilled in the art.

[0066] Please refer to Figures 12 to 14The elastic assembly 34 comprises a vertical guide rod 341, a compression spring 342 sleeved outside the lower end of the guide rod 341, a guide sleeve 343 sleeved outside the upper end of the guide rod 341, and a stopper 344 arranged at the top of the guide rod 341. The lower end of the guide rod 341 is fixed to the bottom plate 31, the upper end of the guide rod 341 penetrates the bearing plate 33, the bearing plate 33 is provided with an opening through which the upper end of the guide rod 341 penetrates, the lower end of the guide sleeve 343 is arranged in the opening, the lower end of the compression spring 342 abuts against the top surface of the bottom plate 31, the upper end of the compression spring 342 abuts against the bottom surface of the bearing plate 33, and the bottom surface of the stopper 344 abuts against the top surface of the guide sleeve 343. When the load is zero, the bearing plate 33 is lifted by the compression spring 342, and the bearing plate 33 is limited by the stopper 344 above the guide rod 341, so that the bearing plate 33 can be kept in a horizontal state, and the overload detection sensor 35 is reset (i.e., the detected value is zero) when the load is zero. When the load is supported, the compression spring 342 can prevent the bearing plate 33 from being stuck by the guide rod 341, so that the pressure on the sensor is accurate, and the value detected by the overload detection sensor 35 is the weight of the load 32 when the load is zero, because the deformation of the compression spring 342 is very small, and the corresponding change in elastic force is very small and can be ignored.

[0067] Please refer to Figure 12 、 Figure 14 The lower end of the guide rod 341 is fixed to the bottom plate 31 by the second screw 37, the upper end of the guide sleeve 343 is fixed to the bearing plate 33 by the third screw 38, and the stopper 344 is fixed to the top of the guide rod 341 by the fourth screw 39. Specifically, the upper end of the guide sleeve 343 is provided with a plurality of fourth fixing holes 3431, the fourth fixing holes 3431 cooperate with the third screw 38 to fix the upper end of the guide sleeve 343 to the bearing plate 33, and the stopper 344 is provided with a plurality of fifth fixing holes 3441, the fifth fixing holes 3441 cooperate with the fourth screw 39 to fix the stopper 344 to the top of the guide rod 341. Preferably, the number of the fourth fixing holes 3431 and the fifth fixing holes 3441 is two. Of course, in other embodiments, the number of the fourth fixing holes 3431 and the fifth fixing holes 3441 can be one, three or more, which is not limited in the present application, and can be set according to actual conditions by those skilled in the art.

[0068] The overload detection mechanism 3 of the fork can directly detect the weight of the load 32 by simple parts combination, can be directly installed on the load bearing part of the bidirectional fork telescopic mechanism, and can play the roles of weight detection, weight limitation, safety guarantee and the like. The overload detection mechanism 3 has simple structure, small number of parts, low cost and high stability and reliability. The overload detection sensor 35 bears small additional weight, and the selected specification is small, thereby further reducing the cost. The load bearing plate 33 and the bottom plate 31 are balanced when the load bearing plate 33 is empty, and the load bearing plate 33 is not stuck when the load bearing plate 33 bears the load, thereby ensuring the accuracy of the overload detection.

[0069] It should be understood that the above description can be improved or changed by those skilled in the art, and all these improvements and changes shall fall within the protection scope of the appended claims of the present application.

[0070] The above is an exemplary description of the present application in combination with the drawings. Obviously, the implementation of the present application is not limited by the above manner. Any improvement or change of the method concept and technical solution of the present application, or direct application of the concept and technical solution of the present application to other occasions without improvement, shall fall within the protection scope of the present application.

Claims

1. A side-mounted storage, retrieval, and stacking system, characterized in that, The system includes a rack and a side-mounted storage and picking stacker installed on the rack, wherein the side-mounted storage and picking stacker is located in the storage aisle in the middle of the rack; The side-mounted warehouse stacker includes a bidirectional fork extension mechanism for picking up and placing materials, a horizontal movement mechanism for driving the bidirectional fork extension mechanism to move horizontally, and a vertical lifting mechanism for driving the bidirectional fork extension mechanism to lift. The vertical lifting mechanism is installed on the rack, the horizontal movement mechanism is installed on the lifting end of the vertical lifting mechanism, and the bidirectional fork extension mechanism is installed on the horizontal movement end of the horizontal movement mechanism. The vertical lifting mechanism includes two lifting modules arranged opposite each other, and the horizontal motion mechanism is installed between the lifting ends of the two lifting modules. At least one of the lifting modules is provided with a safety anti-fall mechanism, which is used to prevent the horizontal movement mechanism from falling when the horizontal movement mechanism is lifted to any height by the lifting module. The safety anti-fall mechanism includes a safety pin base plate fixed to the lifting module, a safety pin lifting plate fixed to the horizontal movement mechanism, and a safety pin. The safety pin base plate and the safety pin lifting plate are vertically opposite to each other. The safety pin base plate has a plurality of first pin holes for the safety pin to be inserted along its height direction. The safety pin lifting plate has a plurality of second pin holes for the safety pin to be inserted and which are opposite to the first pin holes along its height direction. Each of the second pin holes is provided with a safety pin sensor at its end for sensing whether the safety pin is inserted. The safety pin lifting plate is provided with a sensing groove at the end of each of the second pin holes. The safety pin sensor is fixed to one side of the corresponding sensing groove by a fastener, and the sensing end of the safety pin sensor faces the sensing groove.

2. The side-mounted storage, retrieval, and stacking system according to claim 1, characterized in that, An automatic storage door is installed at the opening of the storage channel. When any of the safety pin sensors detects the insertion of the safety pin, the automatic storage door opens.

3. The side-mounted storage, retrieval, and stacking system according to claim 1, characterized in that, The second pin hole is an elongated hole, and the second pin hole is a round hole.

4. The side-mounted storage, retrieval, and stacking system according to claim 3, characterized in that, The center-to-center distance of the semicircles at both ends of the elongated hole is greater than half the center-to-center distance of two adjacent holes, and the center-to-center distance of the adjacent semicircles of two adjacent elongated holes is less than the center-to-center distance of two adjacent holes.

5. The side-mounted storage, retrieval, and stacking system according to claim 1, characterized in that, The bidirectional fork extension mechanism is equipped with a fork overload detection mechanism on its load-bearing component. The fork overload detection mechanism includes a base plate, a load-bearing plate disposed above the base plate for placing loads, and an elastic component and an overload detection sensor disposed between the base plate and the load-bearing plate. The elastic component is located at the four corners of the base plate and the load-bearing plate, and the overload detection sensor is located at the center of the base plate and the load-bearing plate, with the load-bearing plate pressing on the sensing end of the overload detection sensor.

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