A twin column stacker

Abstract

The application discloses a double-column stacking machine which comprises a rack, a fork mechanism, a safety clamp mechanism, a linkage mechanism and a speed limiter, the rack is provided with a driving mechanism and two columns arranged side by side, the columns are provided with vertical rails, the fork mechanism is arranged between the two columns in a liftable manner, the fork mechanism is connected with the driving mechanism, the driving mechanism can drive the fork mechanism to lift or drop, the safety clamp mechanism is arranged on the fork mechanism, the safety clamp mechanism is provided in two, the safety clamp mechanism is provided with a passage, the two vertical rails are arranged in the two passages respectively, the linkage mechanism is arranged on the fork mechanism, the linkage mechanism is connected with the safety clamp mechanism, the speed limiter is provided in one, the speed limiter is arranged on the rack and connected with the linkage mechanism through a connecting rope, wherein when the fork mechanism slides downward, the speed limiter can lock the connecting rope, the linkage mechanism which slides downward with the fork mechanism is driven to act, so that the two safety clamp mechanisms clamp the two vertical rails arranged in the corresponding passages respectively, and the fork mechanism is stopped.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of logistics, in particular to a double-column stacking machine. BACKGROUND

[0002] The double-column stacking machine is an important component in the automated stereoscopic warehouse. In the existing technology, some double-column stacking machines are provided with two speed limiters and two safety clamp mechanisms, and the two safety clamp mechanisms are connected with the two speed limiters one by one through connecting ropes. When the fork mechanism of the double-column stacking machine falls during the load lifting process, the two speed limiters can lock the connecting ropes to trigger the two safety clamp mechanisms to work, so as to efficiently stop the falling fork mechanism. However, the inventors found in the actual production process that the setting of the two speed limiters greatly increases the production cost of the overall double-column stacking machine. SUMMARY

[0003] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application provides a double-column stacking machine.

[0004] The double-column stacking machine according to the embodiment of the present application comprises a rack, a fork mechanism, a safety clamp mechanism, a linkage mechanism and a speed limiter. The rack is provided with a driving mechanism and two side-by-side arranged columns. The columns are provided with vertical rails. The fork mechanism is arranged between the two columns in a liftable manner. The fork mechanism is connected with the driving mechanism. The driving mechanism can drive the fork mechanism to lift. The safety clamp mechanism is arranged on the fork mechanism. The safety clamp mechanism is provided in two. The safety clamp mechanism is provided with a passage. Two vertical rails are respectively arranged in two passages. The linkage mechanism is arranged on the fork mechanism. The linkage mechanism is connected with the safety clamp mechanism. The speed limiter is provided in one. The speed limiter is arranged on the rack and connected with the linkage mechanism through a connecting rope. When the fork mechanism falls and slides, the speed limiter can lock the connecting rope, so that the linkage mechanism falling with the fork mechanism acts to drive the two safety clamp mechanisms to clamp the two vertical rails arranged in the corresponding passages respectively, so as to stop the fork mechanism.

[0005] The double-column stacking machine according to the embodiment of the present application has at least the following advantages

[0006] Advantages:

[0007] Through the above structure, the double-column stacking machine can lock the connecting rope when the fork mechanism descends and slides, so that the linkage mechanism descending with the fork mechanism acts to drive two safety clamp mechanisms to clamp two vertical rails passing through the corresponding channels respectively to stop the fork mechanism. Therefore, compared with the traditional double-column stacking machine, the double-column stacking machine of the application has fewer speed limiters, thereby reducing the production cost of the overall double-column stacking machine.

[0008] According to some embodiments of the application, the safety clamp mechanism comprises a sliding frame, a guide block and a clamp block, the sliding frame is arranged on the fork mechanism in a liftable manner, the sliding frame is connected with the linkage mechanism, the guide block is arranged on the fork mechanism, the guide block is arranged in two opposite positions, the guide block is provided with a guide slope, the clamp block is arranged on the sliding frame, the clamp block is arranged in two opposite positions, the two clamp blocks are arranged between the two guide slopes, and the channel is arranged between the two clamp blocks. When the fork mechanism descends and slides, the speed limiter can lock the connecting rope, so that the linkage mechanism descending with the fork mechanism acts to drive the two sliding frames to move upward, thereby driving the corresponding two clamp blocks to move upward along the corresponding two guide slopes to clamp the corresponding vertical rails passing through the corresponding channels.

[0009] According to some embodiments of the application, the guide block is provided with a guide groove, the groove bottom surface of the guide groove is the guide slope, and the two clamp blocks are slidingly arranged in the two guide grooves respectively.

[0010] According to some embodiments of the application, among the adjacent guide blocks and clamp blocks, the groove side wall of the guide groove and one of the clamp blocks are provided with a limiting groove, and the other one is provided with a limiting block, and the limiting block is slidingly arranged in the limiting groove.

[0011] According to some embodiments of the application, among the adjacent guide blocks and clamp blocks, the guide slope and the clamp block are abutted by an abutment plate, and the abutment plate is located in the guide groove.

[0012] According to some embodiments of the application, the abutment plate is rotatably provided with at least two rotating rollers, and the abutment plate is abutted with the corresponding guide slope and the corresponding clamp block through at least one rotating roller.

[0013] According to some embodiments of the present application, the linkage mechanism comprises connecting arms, first rods and second rods, the connecting arms are arranged on the fork mechanism in a liftable manner, two ends of the connecting arms are connected with the sliding frames respectively, one of the connecting arms is connected with the connecting rope, the first rods are arranged in two, one end of the first rods is connected with the other end of the connecting arms respectively, the second rods are rotatably connected with the fork mechanism, both ends of the second rods are provided with swing arms, the swing arms are rotatably connected with the other end of the first rods respectively, when the fork mechanism descends and slides, the speed limiter can lock the connecting rope to make one of the connecting arms move upward, so that the sliding frame connected with the connecting arm and the first rod move upward, the first rod drives the other first rod to move upward through the swing arm and the second rod, so as to drive the other connecting arm to move upward and make the other sliding frame connected with the connecting arm move upward.

[0014] According to some embodiments of the present application, the fork mechanism is provided with two abutting blocks and two elastic members, the elastic members are connected with the connecting arms respectively, and the elastic members can drive the connecting arms to move downward and abut against the abutting blocks respectively.

[0015] According to some embodiments of the present application, the fork mechanism comprises a rack, fork assemblies and a first driving assembly, the rack is arranged between the two upright columns in a liftable manner, the safety clamp mechanism and the linkage mechanism are arranged on the rack, the rack is connected with the driving mechanism, the fork assemblies are arranged on the rack in a sliding manner, the fork assemblies are arranged in two and side by side, the first driving assembly is arranged on the rack, the first driving assembly is connected with the fork assemblies, and the first driving assembly can drive the fork assemblies to move towards each other or away from each other to adjust the distance between the fork assemblies.

[0016] According to some embodiments of the present application, the rack is provided with a second driving assembly, the fork assembly comprises a mounting arm, an extension arm and a fork arm, the mounting arm is slidingly arranged on the rack, the mounting arm is connected with the first driving assembly, the mounting arm is provided with a first rack and at least two first gears which are rotatable and sequentially engaged, one of the first gears is connected with the second driving assembly, the extension arm is slidingly arranged on the mounting arm, the extension arm is provided with a second rack and at least two second gears which are rotatable and sequentially engaged, the first rack is engaged with at least one of the second gears, the second rack is engaged with at least one of the first gears, the fork arm is slidingly arranged on the extension arm, the fork arm is provided with a third rack, the third rack is engaged with at least one of the second gears, the second driving assembly can drive the first gears to rotate, so as to drive the extension arm to linearly move through the second rack, wherein the second gears on the linearly moving extension arm rotate under the action of the first rack, so as to drive the fork arm to linearly move in the same direction as the extension arm through the third rack. BRIEF DESCRIPTION OF DRAWINGS

[0017] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings in which:

[0018] Figure 1 Structure diagram of an embodiment of the double-column stacker of the present application;

[0019] Figure 2 Structure diagram of the fork mechanism, safety clamp mechanism and linkage mechanism shown in Figure 1

[0020] Figure 3 Partial structure diagram shown in Figure 2

[0021] Another partial structure diagram shown in Figure 4 Figure 2 Sectional view of the safety clamp mechanism shown in

[0022] Figure 5 Structure diagram of the fork assembly, first driving assembly and second driving assembly shown in Figure 4

[0023] Figure 6 Figure 2

[0024] Reference signs:

[0025] Rack 100, column 110;

[0026] ​​​​​Fork mechanism 200, rack 210, fork assembly 220, mounting arm 221, extension arm 222, fork arm 223, first driving assembly 230, first driving piece 231, first rotating shaft 232, second driving assembly 240, second driving piece 241, second rotating shaft 242;

[0027] Safety clamp mechanism 300, sliding frame 310, guide block 320, guide groove 321, guide inclined surface 321A, limiting block 321B, clamp block 330, limiting groove 331;

[0028] Linkage mechanism 400, connecting arm 410, first rod 420, second rod 430, swing arm 431;

[0029] Connecting rope 500;

[0030] Abutting plate 600, rotating roller 610;

[0031] Abutting block 710, elastic piece 720;

[0032] First rack 810, second gear 820, third rack 830, second rack 840, first gear 850;

[0033] Channel S. DETAILED DESCRIPTION

[0034] This part will describe the specific embodiments of the present application in detail, the preferred embodiments of the present application are shown in the drawings, the role of the drawings is to supplement the description of the text part with graphics, so that people can intuitively and visually understand each technical feature and the overall technical scheme of the present application, but it cannot be understood as a limitation on the protection scope of the present application.

[0035] In the description of the present application, if the first, second, third, fourth, fifth, etc. are described, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the order of indicated technical features.

[0036] In the description of the present application, it is understood that the orientation description, such as up, down, front, back, left, right, etc. Indicated orientation or position relationship is based on the orientation or position relationship shown in the drawings, only for the convenience of describing the present application and simplifying the description, and is not indicative or implied that the device or element indicated must have a specific orientation, be constructed and operated in a specific orientation, therefore, it cannot be understood as a limitation on the present application.

[0037] In the present application, unless otherwise explicitly defined, the words such as "arrange", "mount", "connect" and the like shall be understood in a broad sense, for example, can be directly connected, or indirectly connected through an intermediate medium; can be fixedly connected, or detachably connected, or integrally formed; can be mechanically connected; can be the internal communication of two elements or the interaction relationship of two elements. The person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0038] Referring to Figures 1 to 6 The double-column stacking machine includes a rack 100, a fork mechanism 200, a safety clamp mechanism 300, a linkage mechanism 400, and a speed limiter.

[0039] The rack 100 is provided with a driving mechanism and two columns 110 arranged side by side, the column 110 is provided with a vertical rail, the fork mechanism 200 is used for supporting articles, the fork mechanism 200 is arranged between the two columns 110 in a liftable manner, the fork mechanism 200 is connected with the driving mechanism, the driving mechanism can drive the fork mechanism 200 to lift, the safety clamp mechanism 300 is arranged on the fork mechanism 200, the safety clamp mechanism 300 is provided in two, the safety clamp mechanism 300 is provided with a passage S, the two vertical rails are respectively arranged in the two passages S, the linkage mechanism 400 is arranged on the fork mechanism 200, the linkage mechanism 400 is connected with the safety clamp mechanism 300, the speed limiter is provided in one, and the speed limiter is arranged on the rack 100 and connected with the linkage mechanism 400 through a connecting rope 500.

[0040] When the fork mechanism 200 slides downward, the speed limiter can lock the connecting rope 500, so that the linkage mechanism 400 which descends with the fork mechanism 200 acts to drive the two safety clamp mechanisms 300 to clamp the two vertical rails arranged in the corresponding passages S respectively, and stop the fork mechanism 200.

[0041] When the fork mechanism 200 ascends or descends with articles at a normal speed, the speed limiter does not intervene in the connecting rope 500 to make it operate normally with the fork mechanism 200, and the two vertical rails slide in the two passages S respectively.

[0042] Through the above structure, the double-column stacking machine of the present application can lock the connecting rope 500 when the fork mechanism 200 slides downward through one speed limiter, so that the linkage mechanism 400 which descends with the fork mechanism 200 acts to drive the two safety clamp mechanisms 300 to clamp the two vertical rails arranged in the corresponding passages S respectively to stop the fork mechanism 200. Therefore, compared with the traditional double-column stacking machine, the number of speed limiters arranged in the double-column stacking machine of the present application is less, so that the production cost of the whole double-column stacking machine can be reduced.

[0043] The fork mechanism 200 includes a rack 210, a fork assembly 220, and a first driving assembly 230.

[0044] With reference to Figure 2 and Figure 6 , the shelf 210 is arranged between the two upright columns 110 in a liftable manner, the safety clamp mechanism 300 and the linkage mechanism 400 are arranged on the shelf 210, the shelf 210 is connected with the driving mechanism, the fork assembly 220 is arranged on the shelf 210 in a sliding manner, the fork assembly 220 is used for placing articles, the fork assembly 220 is arranged in two and arranged side by side, the first driving assembly 230 is arranged on the shelf 210, the first driving assembly 230 is connected with the fork assembly 220, and the first driving assembly 230 can drive the two fork assemblies 220 to move towards each other or move away from each other, so as to adjust the distance between the two fork assemblies 220.

[0045] In the embodiment, with reference to Figure 6 , the shelf 210 is provided with the second driving assembly 240, the fork assembly 220 includes a mounting arm 221, an extension arm 222 and a fork arm 223, the mounting arm 221 is arranged on the shelf 210 in a sliding manner, the mounting arm 221 is used for mounting a goods plate to place corresponding articles, the mounting arm 221 is connected with the first driving assembly 230, the mounting arm 221 is provided with a first rack 810 and at least two first gears 850 which are rotatable and sequentially meshed, one of the first gears 850 is connected with the second driving assembly 240, the extension arm 222 is arranged on the mounting arm 221 in a sliding manner, the extension arm 222 is provided with a second rack 840 and at least two second gears 820 which are rotatable and sequentially meshed, the first rack 810 is meshed with at least one of the second gears 820, the second rack 840 is meshed with at least one of the first gears 850, and the fork arm 223 is arranged on the extension arm 222 in a sliding manner, the fork arm 223 is provided with a third rack 830, the third rack 830 is meshed with at least one of the second gears 820, and the second driving assembly 240 can drive the first gears 850 to rotate, so as to drive the extension arm 222 to move linearly through the second rack 840, wherein the second gears 820 on the linearly moving extension arm 222 rotate under the action of the first rack 810, so as to drive the fork arm 223 to move linearly in the same direction as the extension arm 222 through the third rack 830.

[0046] Through the above structure, on the one hand, the distance between the two fork assemblies 220 can be adjusted, that is, the distance between the two fork arms 223 can be adjusted, so as to correspondingly fork articles of corresponding sizes (wherein, the fork mechanism 200 of the present application can fork articles weighing up to 3 tons on the basis of adjusting the distance between the two fork arms 223, compared with the existing fork mechanism, the fork mechanism 200 can fork articles with greater weight, and has greater market competitiveness); on the other hand, the two fork arms 223 can move forward synchronously or move backward synchronously, so as to fork articles on the front side or the rear side of the shelf 210.

[0047] The mounting arm 221 is connected with the first driving assembly 230. Specifically, refer to Figure 6 The first driving assembly 230 comprises a first driving member 231 and two first rotating shafts 232. The first driving member 231 is arranged on the shelf 210. The first rotating shafts 232 are arranged in rotation on the shelf 210 and are connected with the first driving member 231. The two first rotating shafts 232 are respectively threadedly connected with the two mounting arms 221. The first driving member 231 is arranged as an electric motor. The first driving member 231 can drive the two first rotating shafts 232 to rotate, so as to drive the two mounting arms 221 to move towards each other or move away from each other, thereby adjusting the distance between the two fork assemblies 220.

[0048] One of the first gears 850 is connected with the second driving assembly 240. Specifically, refer to Figure 6 The second driving assembly 240 comprises a second driving member 241 and two second rotating shafts 242. The second driving member 241 is arranged on the shelf 210. The second rotating shafts 242 are arranged in rotation on the shelf 210 and are connected with the second driving member 241. The two second rotating shafts 242 are respectively engaged with the two first gears 850 arranged on different mounting arms 221. The second driving member 241 is arranged as an electric motor.

[0049] When the second driving member 241 drives the two second rotating shafts 242 to rotate, so as to drive the first gears 850 arranged on the two mounting arms 221 to rotate, the first gears 850 push the corresponding second racks 840, so that the two extension arms 222 are synchronously moved forward or backward. In addition, the second gears 820 arranged on the extension arms 222 moved forward or backward are driven to rotate by the first racks 810, so as to drive the two fork arms 223 to be synchronously moved forward or backward by the two third racks 830.

[0050] The safety clamp mechanism 300 comprises a sliding frame 310, guide block members 320 and clamp block members 330.

[0051] Refer to Figures 3 to 5 The sliding frame 310 is arranged on the shelf 210 in a liftable manner. The sliding frame 310 is connected with the linkage mechanism 400. The guide block members 320 are arranged on the shelf 210. The guide block members 320 are arranged in two and are oppositely arranged. The guide block members 320 are provided with guide inclined surfaces 321A. The clamp block members 330 are arranged on the sliding frame 310. The clamp block members 330 are arranged in two and are oppositely arranged. The two clamp block members 330 are arranged between the two guide inclined surfaces 321A. The above-mentioned channel S is arranged between the two clamp block members 330.

[0052] When the fork mechanism 200 slides downward, the speed limiter can lock the connecting rope 500, so that the linkage mechanism 400 driven by the downward sliding of the fork mechanism 200 acts to drive the two sliding frames 310 to move upward, thereby driving the corresponding two clamp block pieces 330 to move upward along the corresponding two guide inclined surfaces 321A to clamp the corresponding vertical rails passing through the corresponding channels S. It can be understood that the upward movement of the clamp block pieces 330 and the sliding frames 310 is relative to the upward movement of the rack 210.

[0053] In the embodiment, referring to Figures 3 to 5 , the guide block piece 320 is provided with a guide groove 321, and the groove bottom surface of the guide groove 321 is a guide inclined surface 321A. The two clamp block pieces 330 are respectively slidingly arranged in the two guide grooves 321 to be guided to move upward or downward.

[0054] In the embodiment, referring to Figure 5 , among the adjacent guide block piece 320 and clamp block piece 330, the clamp block piece 330 is provided with a limiting groove 331, and the groove side wall of the guide groove 321 is provided with a limiting block 321B. The limiting block 321B is slidingly arranged in the limiting groove 331 to improve the sliding stability of the slidingly arranged guide block piece 320 and clamp block piece 330.

[0055] In the embodiment, referring to Figure 5 , among the adjacent guide block piece 320 and clamp block piece 330, the guide inclined surface 321A and the clamp block piece 330 abut against an abutment plate 600. The abutment plate 600 is located in the guide groove 321, and the abutment plate 600 is rotatably provided with at least two rotating roller pieces 610. The abutment plate 600 abuts against the corresponding guide inclined surface 321A and the corresponding clamp block piece 330 through the at least one rotating roller piece 610.

[0056] Through the above structure, the abutment plate 600 is arranged. On the one hand, it can reduce the frictional resistance suffered by the clamp block piece 330 when moving downward or upward. On the other hand, it can indirectly abut the clamp block piece 330 against the corresponding guide inclined surface 321A, thereby reducing the wear of the guide inclined surface 321A by the clamp block piece 330 when moving upward quickly.

[0057] The linkage mechanism 400 includes a connecting arm 410, a first rod 420, and a second rod 430.

[0058] Referring to Figures 2 to 4The connecting arm 410 is vertically mounted on the shelf 210. There are two connecting arms 410, one end of which is connected to two sliding frames 310 respectively. One of the connecting arms 410 is connected to the connecting rope 500. There are two first rods 420, one end of which is connected to the other end of the two connecting arms 410 respectively. The second rod 430 is rotatably connected to the shelf 210. Both ends of the second rod 430 are provided with swing arms 431. The two swing arms 431 are rotatably connected to the other ends of the two first rods 420 respectively.

[0059] When the fork mechanism 200 slides downwards, the speed limiter locks the connecting rope 500, causing one of the connecting arms 410 to move upwards. This causes one of the sliding frames 310 and one of the first rods 420 connected to one of the connecting arms 410 to move upwards. The upward-moving first rod 420 drives the other first rod 420 upwards via the swing arm 431 and the second rod 430, which in turn drives the other connecting arm 410 upwards, causing the other sliding frame 310 connected to it to move upwards. It can be understood that the upward movement of the connecting arm 410, the sliding frame 310, and the first rod 420 are all relative to the shelf 210.

[0060] In this embodiment, refer to Figure 4 The shelf 210 is provided with two abutment blocks 710 and two elastic elements 720. The two elastic elements 720 are respectively connected to two connecting arms 410, and the two elastic elements 720 can drive the two connecting arms 410 to move down to abut against the two abutment blocks 710 respectively. Among them, the elastic elements 720 are set as tension springs; the abutment blocks 710 are set as studs and threadedly connected to the shelf 210.

[0061] Understandably, when the fork mechanism 200 is lifting or lowering a load at a normal speed, the speed limiter does not interfere with the connecting rope 500, allowing it to operate normally with the fork mechanism 200. The two elastic elements 720 drive the two connecting arms 410 to move down to abut against the two abutting blocks 710 respectively. Both mounting clamp mechanisms 300 are in their initial state, and the two clamping blocks 330 are spaced apart on both sides of the corresponding vertical rail, allowing the two vertical rails to slide in the two channels S respectively.

[0062] Of course, the present invention is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications and substitutions are included within the scope defined by the claims of this application.

Claims

1. A twin column stacker characterized by: The rack (100) is provided with a driving mechanism and two upright columns (110) arranged side by side, and the upright columns (110) are provided with vertical rails; The fork mechanism (200) is arranged between the two upright columns (110) in a liftable manner, and the fork mechanism (200) is connected with the driving mechanism, and the driving mechanism can drive the fork mechanism (200) to lift; The safety clamp mechanism (300) is arranged on the fork mechanism (200), and the safety clamp mechanism (300) is provided with two passages (S), and the two vertical rails are arranged in the two passages (S) respectively; The linkage mechanism (400) is arranged on the fork mechanism (200), and the linkage mechanism (400) is connected with the safety clamp mechanism (300); The speed limiter is provided with one, and the speed limiter is arranged on the rack (100) and connected with the linkage mechanism (400) through a connecting rope (500), wherein When the fork mechanism (200) slides downward, the speed limiter can lock the connecting rope (500), so that the linkage mechanism (400) descending with the fork mechanism (200) acts to drive the two safety clamp mechanisms (300) to clamp the two vertical rails arranged in the corresponding passages (S) respectively, and stop the fork mechanism (200); The safety clamp mechanism (300) comprises: The sliding frame (310) is arranged on the fork mechanism (200) in a liftable manner, and the sliding frame (310) is connected with the linkage mechanism (400); The guide block (320) is arranged on the fork mechanism (200), and the guide block (320) is provided with two guide inclined surfaces (321A); The clamp block (330) is arranged on the sliding frame (310), and the clamp block (330) is provided with two clamp blocks (330) arranged oppositely, and the two clamp blocks (330) are arranged between the two guide inclined surfaces (321A), and the passage (S) is arranged between the two clamp blocks (330), wherein When the fork mechanism (200) slides downward, the speed limiter can lock the connecting rope (500), so that the linkage mechanism (400) descending with the fork mechanism (200) acts to drive the two sliding frames (310) to move upward, and the corresponding two clamp blocks (330) are driven to move upward along the corresponding two guide inclined surfaces (321A) to clamp the corresponding vertical rails arranged in the corresponding passages (S); And the linkage mechanism (400) comprises: The connecting arm (410) is arranged on the fork mechanism (200) in a liftable manner, and the connecting arm (410) is provided with two connecting arms (410), and one end of the two connecting arms (410) is connected with the two sliding frames (310) respectively, and one of the connecting arms (410) is connected with the connecting rope (500); The first rod (420) is provided with two first rods (420), and one end of the two first rods (420) is connected with the other end of the two connecting arms (410) respectively. ​ A second rod (430) is rotationally connected to the fork mechanism (200), both ends of the second rod (430) are provided with swing arms (431), and both of the swing arms (431) are rotationally connected to the other end of the two first rods (420), wherein, When the fork mechanism (200) descends and slides, the speed limiter can lock the connecting rope (500) to move one of the connecting arms (410) upward, so that one of the sliding frames (310) connected with one of the connecting arms (410) and one of the first rods (420) are both moved upward, and one of the first rods (420) that is moved upward drives the other first rod (420) to move upward through the swing arm (431) and the second rod (430), so as to drive the other connecting arm (410) to move upward and make the other sliding frame (310) connected with the other connecting arm (410) move upward.

2. The double-column stacking machine according to claim 1, characterized in that: The guide block (320) is provided with a guide groove (321), the groove bottom surface of the guide groove (321) is the guide slope (321A), and the two clamp block (330) are respectively slidingly arranged in the two guide grooves (321).

3. The double-column stacking machine according to claim 2, characterized in that: In the adjacent guide block (320) and clamp block (330), the groove side wall of the guide groove (321) and one of the clamp block (330) are provided with a limiting groove (331), and the other is provided with a limiting block (321B), and the limiting block (321B) is slidingly arranged in the limiting groove (331).

4. The double-column stacking machine according to claim 3, characterized in that: In the adjacent guide block (320) and clamp block (330), the guide slope (321A) and the clamp block (330) are abutted with an abutment plate (600), and the abutment plate (600) is located in the guide groove (321).

5. The double-column stacking machine according to claim 4, characterized in that: The abutment plate (600) is rotatably provided with at least two rotating rollers (610), and the abutment plate (600) is abutted with the corresponding guide slope (321A) and the corresponding clamp block (330) through at least one rotating roller (610).

6. The double-column stacking machine according to claim 1, characterized in that: The fork mechanism (200) is provided with two abutment blocks (710) and two elastic elements (720), the two elastic elements (720) are respectively connected with the two connecting arms (410), and the two elastic elements (720) can drive the two connecting arms (410) to move downward to abut with the two abutment blocks (710) respectively.

7. The double-column stacking machine according to claim 1, characterized in that: The fork mechanism (200) comprises: A shelf (210) is arranged between the two upright columns (110) in a liftable manner, the safety clamp mechanism (300) and the linkage mechanism (400) are arranged on the shelf (210), and the shelf (210) is connected with the driving mechanism; A fork assembly (220) is arranged on the shelf (210) in a sliding manner, and the fork assembly (220) is arranged in two and arranged side by side; A first driving assembly (230) is arranged on the shelf (210), the first driving assembly (230) is connected with the fork assembly (220), and the first driving assembly (230) can drive the two fork assemblies (220) to move towards each other or move away from each other to adjust the distance between the two fork assemblies (220).

8. The double upright column stacking machine according to claim 7, characterized in that: The shelf (210) is provided with a second driving assembly (240), and the fork assembly (220) comprises: A mounting arm (221) is arranged on the shelf (210) in a sliding manner, the mounting arm (221) is connected with the first driving assembly (230), the mounting arm (221) is provided with a first rack (810) and at least two first gears (850) rotatable and sequentially meshed, and one of the first gears (850) is connected with the second driving assembly (240); An extension arm (222) is arranged on the mounting arm (221) in a sliding manner, the extension arm (222) is provided with a second rack (840) and at least two second gears (820) rotatable and sequentially meshed, the first rack (810) is meshed with at least one of the second gears (820), and the second rack (840) is meshed with at least one of the first gears (850); A fork arm (223) is arranged on the extension arm (222) in a sliding manner, the fork arm (223) is provided with a third rack (830), the third rack (830) is meshed with at least one of the second gears (820), and the second driving assembly (240) can drive the first gears (850) to rotate to drive the extension arm (222) to move linearly through the second rack (840), wherein The second gears (820) on the linearly moving extension arm (222) rotate under the action of the first rack (810) to drive the fork arm (223) to move linearly in the same direction as the extension arm (222) through the third rack (830).

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