Double-stand-column stacking machine

Abstract

The double-stand-column stacking machine comprises a machine frame, a pallet fork mechanism, a safety tongs mechanism, a linkage mechanism and a speed limiter, the machine frame is provided with a driving mechanism and two stand columns arranged side by side, the stand columns are provided with vertical rails, the pallet fork mechanism is arranged between the two stand columns in a lifting mode, the pallet fork mechanism is connected with the driving mechanism, and the safety tongs mechanism is connected with the linkage mechanism. The driving mechanism can drive the pallet fork mechanism to ascend and descend, the safety tongs mechanisms are arranged on the pallet fork mechanism, the number of the safety tongs mechanisms is two, the safety tongs mechanisms are provided with channels, the two vertical rails penetrate through the two channels respectively, the linkage mechanism is arranged on the pallet fork mechanism and connected with the safety tongs mechanisms, and the speed limiter is arranged on the pallet fork mechanism and connected with the safety tongs mechanisms. The speed limiter is arranged on the rack and connected with the linkage mechanism through a connecting rope, and when the pallet fork mechanism falls and slides, the speed limiter can lock the connecting rope, so that the linkage mechanism falling along with the pallet fork mechanism acts, the two safety tongs mechanisms are driven to clamp the two vertical rails penetrating through the corresponding channels respectively, and the pallet fork mechanism is stopped.

Description

Technical Field

[0001] The invention relates to the technical field of logistics, and in particular to a double-column stacker. Background Art

[0002] The double-column stacker is an important component of the automated warehouse. In the prior art, some double-column stackers are provided with two speed limiters and two safety clamp mechanisms, and the two safety clamp mechanisms are connected to the two speed limiters one by one through a connecting rope. When the fork mechanism of the double-column stacker falls during the lifting process of the load, the two speed limiters can lock the connecting rope to trigger the two safety clamp mechanisms to work, so as to effectively stop the falling fork mechanism. However, the inventor found in the actual production process that the provision of two speed limiters would greatly increase the production cost of the overall double-column stacker. Summary of the invention

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

[0004] A double-column stacker according to an embodiment of the present invention comprises a frame, a fork mechanism, a safety clamp mechanism, a linkage mechanism and a speed limiter, wherein the frame is provided with a driving mechanism and two columns arranged side by side, the columns are provided with vertical rails, the fork mechanism is liftably arranged between the two columns, the fork mechanism is connected to the driving mechanism, the driving mechanism can drive the fork mechanism to rise and fall, the safety clamp mechanism is arranged on the fork mechanism, the safety clamp mechanism is provided with two, the safety clamp mechanism is provided with channels, the two vertical rails are respectively passed through the two channels, the linkage mechanism is arranged on the fork mechanism, the linkage mechanism is connected to the safety clamp mechanism, the speed limiter is provided with one, the speed limiter is arranged on the frame and connected to the linkage mechanism through a connecting rope, wherein when the fork mechanism falls and slides, the speed limiter can lock the connecting rope, so that the linkage mechanism that falls with the fork mechanism moves, so as to drive the two safety clamp mechanisms to clamp the two vertical rails respectively passed through the corresponding channels, and stop the fork mechanism.

[0005] A double-column stacker according to an embodiment of the present invention has at least the following

[0006] Beneficial effects:

[0007] Through the above structure, the double-column stacker of the present application can lock the connecting rope when the fork mechanism falls and slides with only one speed limiter, so that the linkage mechanism that falls with the fork mechanism is activated to drive the two safety clamp mechanisms to clamp the two vertical rails passing through the corresponding channels respectively to stop the fork mechanism. Therefore, compared with the traditional double-column stacker, the double-column stacker of the present application has fewer speed limiters, so the production cost of the overall double-column stacker can be reduced.

[0008] According to some embodiments of the present invention, the safety clamp mechanism includes a sliding frame, a guide block member and a clamp block member, the sliding frame can be lifted and lowered on the fork mechanism, the sliding frame is connected to the linkage mechanism, the guide block member is arranged on the fork mechanism, the guide block member is provided with two and relatively arranged, the guide block member is provided with a guide inclined surface, the clamp block member is arranged on the sliding frame, the clamp block member is provided with two and relatively arranged, the two clamp block members are both arranged between the two guide inclined surfaces, and the channel is provided between the two clamp block members, wherein, when the fork mechanism falls and slides, the speed limiter can lock the connecting rope, so that the linkage mechanism that falls with the fork mechanism drives the two sliding frames to move up, thereby driving the corresponding two clamp block members to move up and approach along the corresponding two guide inclined surfaces respectively, so as to clamp the corresponding vertical rail passing through the corresponding channel.

[0009] According to some embodiments of the present invention, the guide block member is provided with a guide groove, the groove bottom surface of the guide groove is the guide inclined surface, and the two clamp block members are respectively slidably arranged in the two guide grooves.

[0010] According to some embodiments of the present invention, in the adjacent guide block members and the clamp block members, one of the groove side wall of the guide groove and the clamp block member is provided with a limit groove, and the other is provided with a limit block, and the limit block is slidably arranged in the limit groove.

[0011] According to some embodiments of the present invention, in the adjacent guide block members and the clamp block members, an abutment plate is abutted between the guide inclined surface and the clamp block member, and the abutment plate is located in the guide groove.

[0012] According to some embodiments of the present invention, the abutment plate is rotatably provided with at least two roller members, and the abutment plate abuts against the corresponding guide bevel and the corresponding clamp block member through at least one of the roller members.

[0013] According to some embodiments of the present invention, the linkage mechanism includes a connecting arm, a first rod and a second rod, the connecting arm being liftable and arranged on the fork mechanism, the connecting arm being provided with two connecting arms, one end of the two connecting arms being respectively connected to the two sliding frames, one of the connecting arms being connected to the connecting rope, the first rod being provided with two connecting arms, one end of the two first rods being respectively connected to the other end of the two connecting arms, the second rod being rotatably connected to the fork mechanism, the two ends of the second rod being provided with swing arms, the two swing arms being rotatably connected to the other end of the two first rods, respectively, wherein when the fork mechanism falls and slides, the speed limiter can lock the connecting rope to make one of the connecting arms move up, so that one of the sliding frames and one of the first rods connected to one of the connecting arms are both moved up, and the one of the first rods that moves up drives the other first rod to move up through the swing arm and the second rod, thereby driving the other connecting arm to move up and making the other sliding frame connected thereto move up.

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

[0015] According to some embodiments of the present invention, the fork mechanism includes a shelf, a fork assembly and a first drive assembly. The shelf can be raised and lowered between the two columns. The safety clamp mechanism and the linkage mechanism are both arranged on the shelf. The shelf is connected to the drive mechanism. The fork assembly is slidably arranged on the shelf. The fork assemblies are arranged in two and arranged side by side. The first drive assembly is arranged on the shelf. The first drive assembly is connected to the fork assembly. The first drive assembly can drive the two fork assemblies to move toward or away from each other to adjust the distance between the two fork assemblies.

[0016] According to some embodiments of the present invention, the shelf is provided with a second drive assembly, the fork assembly includes a mounting arm, an extension arm and a fork arm, the mounting arm is slidably arranged on the shelf, the mounting arm is connected to the first drive assembly, the mounting arm is provided with a first rack, and is provided with at least two first gears that are both rotatable and meshed in sequence, one of the first gears is connected to the second drive assembly, the extension arm is slidably arranged on the mounting arm, the extension arm is provided with a second rack, and is provided with at least two second gears that are both rotatable and meshed in sequence, the first rack is meshed with at least one of the second gears, and the second rack is meshed with at least one of the first gears, the fork arm is slidably arranged on the extension arm, the fork arm is provided with a third rack, and the third rack is meshed with at least one of the second gears, the second drive assembly can drive the first gear to operate, so as to drive the extension arm to move linearly through the second rack, wherein the second gear on the linearly moving extension arm operates under the action of the first rack, so as to be able to drive the fork arm to make a linear movement in the same direction as the extension arm through the third rack. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 It is a structural diagram of an embodiment of a double-column stacker of the present invention;

[0019] Figure 2 for Figure 1 The structural diagram of the fork mechanism, safety clamp mechanism and linkage mechanism shown in;

[0020] Figure 3 for Figure 2 The local structure diagram shown in;

[0021] Figure 4 for Figure 2 Another partial structural diagram shown in ;

[0022] Figure 5 for Figure 4 A cross-sectional view of the safety gear mechanism shown in;

[0023] Figure 6 for Figure 2 The structural diagram of the fork assembly, the first drive assembly and the second drive assembly shown in the figure.

[0024] Reference numerals:

[0025] Frame 100, column 110;

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

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

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

[0029] Connecting rope 500;

[0030] Abutment plate 600, roller member 610;

[0031] Abutment block 710, elastic member 720;

[0032] A first rack 810, a second gear 820, a third rack 830, a second rack 840, and a first gear 850;

[0033] Channel S. DETAILED DESCRIPTION

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

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

[0036] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0037] In the present invention, unless otherwise clearly defined, the words "set", "install", "connect" and the like should be understood in a broad sense, for example, they can be directly connected or indirectly connected through an intermediate medium; they can be fixedly connected or detachably connected or integrally formed; they can be mechanically connected; they can be the internal connection of two elements or the interaction relationship between two elements. Those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0038] Reference Figures 1 to 6 The embodiment of the present invention is a double-column stacker, which includes a frame 100, a fork mechanism 200, a safety clamp mechanism 300, a linkage mechanism 400 and a speed limiter.

[0039] The frame 100 is provided with a driving mechanism and two columns 110 arranged side by side. The columns 110 are provided with vertical rails. The fork mechanism 200 is used to carry articles. The fork mechanism 200 is arranged between the two columns 110 so as to be liftable. The fork mechanism 200 is connected to the driving mechanism. The driving mechanism can drive the fork mechanism 200 to rise and fall. The safety clamp mechanism 300 is provided on the fork mechanism 200. The safety clamp mechanism 300 is provided with two channels S. The two vertical rails are respectively passed through the two channels S. The linkage mechanism 400 is provided on the fork mechanism 200. The linkage mechanism 400 is connected to the safety clamp mechanism 300. There is one speed limiter. The speed limiter is provided on the frame 100 and connected to the linkage mechanism 400 through a connecting rope 500.

[0040] When the fork mechanism 200 falls and slides, the speed limiter can lock the connecting rope 500, so that the linkage mechanism 400 that falls with the fork mechanism 200 can be activated to drive the two safety clamp mechanisms 300 to clamp the two vertical rails passing through the corresponding channels S respectively, and stop the fork mechanism 200.

[0041] When the fork mechanism 200 is carried up or down at a normal speed, the speed limiter does not interfere with the connecting rope 500 so that it operates normally with the fork mechanism 200, and the two vertical rails slide in the two channels S respectively.

[0042] Through the above structure, the double-column stacker of the present application can lock the connecting rope 500 when the fork mechanism 200 falls and slides by only one speed limiter, so that the linkage mechanism 400 that falls with the fork mechanism 200 is activated to drive the two safety clamp mechanisms 300 to clamp the two vertical rails passing through the corresponding channels S to stop the fork mechanism 200. Therefore, compared with the traditional double-column stacker, the double-column stacker of the present application has fewer speed limiters, so the production cost of the overall double-column stacker can be reduced.

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

[0044] Reference Figure 2 and Figure 6 The shelf 210 is liftably disposed between the two uprights 110, the safety clamp mechanism 300 and the linkage mechanism 400 are both disposed on the shelf 210, the shelf 210 is connected to the driving mechanism, the fork assembly 220 is slidably disposed on the shelf 210, the fork assembly 220 is used to carry articles, the fork assembly 220 is arranged in two and arranged side by side, the first driving assembly 230 is disposed on the shelf 210, the first driving assembly 230 is connected to the fork assembly 220, the first driving assembly 230 can drive the two fork assemblies 220 to move toward or away from each other to adjust the distance between the two fork assemblies 220.

[0045] In this embodiment, refer to Figure 6 The shelf 210 is provided with a second driving assembly 240, and the fork assembly 220 includes a mounting arm 221, an extension arm 222 and a fork arm 223. The mounting arm 221 is slidably provided on the shelf 210, and the mounting arm 221 is used to install a cargo plate to hold corresponding items. The mounting arm 221 is connected to the first driving assembly 230, and the mounting arm 221 is provided with a first rack 810, and is provided with at least two first gears 850 that are rotatable and meshed in sequence, one of which is connected to the second driving assembly 240. The extension arm 222 is slidably provided on the mounting arm 221, and the extension arm 222 is provided with a second rack 840, and is provided with at least two second gears that are rotatable and meshed in sequence. 820, the first rack 810 is meshed with at least one second gear 820, the second rack 840 is meshed with at least one first gear 850, the fork arm 223 is slidably arranged on the extension arm 222, the fork arm 223 is provided with a third rack 830, the third rack 830 is meshed with at least one second gear 820, the second driving assembly 240 can drive the first gear 850 to operate, so as to drive the extension arm 222 to move linearly through the second rack 840, wherein the second gear 820 on the linearly moving extension arm 222 operates under the action of the first rack 810, so as to be able to drive the fork arm 223 to make a linear movement 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 to fork items of corresponding sizes (wherein, the fork mechanism 200 of the present application can fork goods weighing up to 3 tons on the basis of the adjustable distance between the two fork arms 223. Compared with the existing fork mechanisms, the weight of goods that can be forked is larger and more competitive in the market); on the other hand, the two fork arms 223 can move forward or backward synchronously to fork goods on the front or rear side of the shelf 210.

[0047] The mounting arm 221 is connected to the first driving assembly 230. For details, refer to Figure 6 The first driving assembly 230 includes a first driving member 231 and two first rotating shafts 232. The first driving member 231 is disposed on the shelf 210. The first rotating shaft 232 is rotatably disposed on the shelf 210 and connected to the first driving member 231. The two first rotating shafts 232 are respectively threadedly connected to the two mounting arms 221. The first driving member 231 is configured as a 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 toward or away from each other, so as to adjust the distance between the two fork assemblies 220.

[0048] One of the first gears 850 is connected to the second drive assembly 240. For details, refer to Figure 6 The second driving assembly 240 includes a second driving member 241 and two second rotating shafts 242. The second driving member 241 is disposed on the shelf 210. The second rotating shafts 242 are rotatably disposed on the shelf 210 and connected to the second driving member 241. The two second rotating shafts 242 are respectively engaged with two first gears 850 located on different mounting arms 221. The second driving member 241 is configured as a motor.

[0049] When the second driving member 241 drives the two second rotating shafts 242 to rotate, thereby driving the first gears 850 on the two mounting arms 221 to rotate, the first gears 850 push the corresponding second racks 840 to make the two extension arms 222 move forward or backward synchronously. In addition, the second gears 820 on the extension arms 222 that move forward or backward operate under the action of the first racks 810, so as to be able to drive the two fork arms 223 to move forward or backward synchronously through the two third racks 830.

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

[0051] Reference Figures 3 to 5 The sliding frame 310 is liftably disposed on the shelf 210, the sliding frame 310 is connected to the linkage mechanism 400, the guide block 320 is disposed on the shelf 210, the guide block 320 is provided with two and oppositely disposed, the guide block 320 is provided with a guide inclined surface 321A, the clamp block 330 is disposed on the sliding frame 310, the clamp block 330 is provided with two and oppositely disposed, the two clamp block 330 are both disposed between the two guide inclined surfaces 321A, and the above-mentioned channel S is provided between the two clamp block 330.

[0052] When the fork mechanism 200 falls and slides, the speed limiter can lock the connecting rope 500, so that the linkage mechanism 400 that falls with the fork mechanism 200 drives the two sliding frames 310 to move upward, thereby driving the corresponding two clamping blocks 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 clamping blocks 330 and the sliding frames 310 is the upward movement of the relative shelf 210.

[0053] In this embodiment, refer to Figures 3 to 5 The guide block 320 is provided with a guide groove 321, the bottom surface of the guide groove 321 is a guide inclined surface 321A, and the two clamp block members 330 are respectively slidably arranged in the two guide grooves 321 to be able to guide the upward or downward movement.

[0054] In this embodiment, refer to Figure 5 In the adjacent guide block members 320 and clamp block members 330, the clamp block member 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, and the limiting block 321B is slidably arranged in the limiting groove 331 to improve the sliding stability of the sliding guide block member 320 and the clamp block member 330.

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

[0056] Through the above structure, the setting of the abutment plate 600 can, on the one hand, reduce the friction resistance encountered by the clamp block 330 when it moves downward or upward; on the other hand, it can make the clamp block 330 indirectly abut against the corresponding guide bevel 321A, reducing the wear of the clamp block 330 on the guide bevel 321A during low and fast upward movement.

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

[0058] Reference Figures 2 to 4The connecting arm 410 is liftably arranged on the shelf 210, and two connecting arms 410 are provided. One end of the two connecting arms 410 is respectively connected to the two sliding frames 310, and one of the connecting arms 410 is connected to the connecting rope 500. Two first rods 420 are provided, and one end of the two first rods 420 is respectively connected to the other end of the two connecting arms 410. The second rod 430 is rotatably connected to the shelf 210, and both ends of the second rod 430 are provided with swing arms 431, and the two swing arms 431 are respectively rotatably connected to the other end of the two first rods 420.

[0059] When the fork mechanism 200 falls 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 and one of the first rods 420 connected to the one of the connecting arms 410 both move upward, and the one of the first rods 420 that moves upward drives the other first rod 420 to move upward through the swing arm 431 and the second rod 430, thereby driving the other connecting arm 410 to move upward so that the other sliding frame 310 connected thereto moves upward. It can be understood that the upward movement of the connecting arm 410, the sliding frame 310 and the first rod 420 is all upward movement 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 members 720. The two elastic members 720 are respectively connected to the two connecting arms 410. The two elastic members 720 can drive the two connecting arms 410 to move downward to respectively abut against the two abutment blocks 710. The elastic members 720 are configured as tension springs; the abutment blocks 710 are configured as studs and are threadedly connected to the shelf 210.

[0061] It can be understood that when the fork mechanism 200 is carrying objects up or down at a normal speed, the speed limiter does not interfere with the connecting rope 500 so that it operates normally with the fork mechanism 200, and the two elastic members 720 drive the two connecting arms 410 to move down to respectively abut against the two abutment blocks 710, and the two mounting clamp mechanisms 300 are both in the initial state. The two clamp block members 330 are spaced apart on both sides of the corresponding vertical rails, so that the two vertical rails slide in the two channels S respectively.

[0062] Of course, the present invention is not limited to the above-mentioned embodiments, and those skilled in the art may make equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications and substitutions are all included in the scope defined by the claims of this application.

Claims

1. A double-column stacker, characterized in that: include A frame (100) is provided with a driving mechanism and two columns (110) arranged side by side, wherein the columns (110) are provided with vertical rails; A fork mechanism (200) is escalably disposed between the two upright posts (110); the fork mechanism (200) is connected to the driving mechanism, and the driving mechanism is capable of driving the fork mechanism (200) to elevate; A safety clamp mechanism (300) is provided on the fork mechanism (200), the safety clamp mechanism (300) is provided in two pieces, the safety clamp mechanism (300) is provided with a channel (S), and the two vertical rails are respectively passed through the two channels (S); A linkage mechanism (400) is provided on the cargo fork mechanism (200), and the linkage mechanism (400) is connected to the safety clamp mechanism (300); A speed limiter is provided, the speed limiter being provided on the frame (100) and connected to the linkage mechanism (400) via a connecting rope (500), wherein when the fork mechanism (200) falls and slides, the speed limiter can lock the connecting rope (500) to activate the linkage mechanism (400) that falls along with the fork mechanism (200), thereby driving the two safety clamp mechanisms (300) to respectively clamp the two vertical rails that are provided through the corresponding channels (S), thereby stopping the fork mechanism (200).

2. A double-column stacker according to claim 1, characterized in that: The safety clamp mechanism (300) comprises: A sliding frame (310) is movably mounted on the fork mechanism (200), and the sliding frame (310) is connected to the linkage mechanism (400); A guide block member (320) is provided on the fork mechanism (200), wherein two guide blocks (320) are provided and are arranged opposite to each other, and each guide block member (320) is provided with a guide inclined surface (321A); A clamp block (330) is arranged on the sliding frame (310), the clamp block (330) is provided in two pieces and arranged opposite to each other, the two clamp blocks (330) are both arranged between the two guide inclined surfaces (321A), and the channel (S) is arranged between the two clamp blocks (330), wherein: When the fork mechanism (200) falls and slides, the speed limiter can lock the connecting rope (500), so that the linkage mechanism (400) that falls with the fork mechanism (200) is actuated to drive the two sliding frames (310) to move upward, thereby driving the corresponding two clamp blocks (330) to move upward and approach along the corresponding two guide inclined surfaces (321A) to clamp the corresponding vertical rail that passes through the corresponding channel (S).

3. A double-column stacker according to claim 2, characterized in that: The guide block member (320) is provided with a guide groove (321), the groove bottom surface of the guide groove (321) is the guide inclined surface (321A), and the two clamp block members (330) are respectively slidably arranged in the two guide grooves (321).

4. A double-column stacker according to claim 3, characterized in that: In the adjacent guide block member (320) and the clamp block member (330), one of the groove side wall of the guide groove (321) and the clamp block member (330) is provided with a limiting groove (331), and the other is provided with a limiting block (321B), and the limiting block (321B) is slidably arranged in the limiting groove (331).

5. A double-column stacker according to claim 3, characterized in that: In the adjacent guide block member (320) and the clamp block member (330), an abutment plate (600) is abutted between the guide inclined surface (321A) and the clamp block member (330), and the abutment plate (600) is located in the guide groove (321).

6. A double-column stacker according to claim 5, characterized in that: The abutment plate (600) is rotatably provided with at least two rotating rollers (610), and the abutment plate (600) abuts against the corresponding guide bevel (321A) and the corresponding clamp block (330) through at least one of the rotating rollers (610).

7. A double-column stacker according to claim 2, characterized in that: The linkage mechanism (400) comprises: A connecting arm (410) is liftably disposed on the fork mechanism (200), two connecting arms (410) are provided, one end of the two connecting arms (410) is respectively connected to the two sliding frames (310), and one of the connecting arms (410) is connected to the connecting rope (500); The first rod (420) is provided in two pieces, and one end of the two first rods (420) is respectively connected to the other end of the two connecting arms (410); The second rod (430) is rotatably connected to the fork mechanism (200), and both ends of the second rod (430) are provided with swing arms (431), and the two swing arms (431) are rotatably connected to the other ends of the two first rods (420), respectively, wherein: When the fork mechanism (200) falls and slides, the speed limiter can lock the connecting rope (500) to make one of the connecting arms (410) move upward, so that one of the sliding frames (310) and one of the first rods (420) connected to one of the connecting arms (410) both move upward, and the one of the first rods (420) that moves upward drives another first rod (420) to move upward through the swing arm (431) and the second rod (430), thereby driving another connecting arm (410) to move upward, so that another of the sliding frames (310) connected thereto moves upward.

8. A double-column stacker according to claim 7, characterized in that: The fork mechanism (200) is provided with two abutment blocks (710) and two elastic members (720), the two elastic members (720) being respectively connected to the two connecting arms (410), and the two elastic members (720) being capable of driving the two connecting arms (410) to move downward to respectively abut against the two abutment blocks (710).

9. A double-column stacker according to claim 1, characterized in that: The fork mechanism (200) comprises: A shelf (210) is escalably disposed between the two upright posts (110), the safety clamp mechanism (300) and the linkage mechanism (400) are both disposed on the shelf (210), and the shelf (210) is connected to the driving mechanism; A fork assembly (220) is slidably disposed on the shelf (210), wherein two fork assemblies (220) are arranged side by side; A first driving assembly (230) is arranged on the shelf (210), and the first driving assembly (230) is connected to the fork assembly (220). The first driving assembly (230) can drive the two fork assemblies (220) to move toward each other or move away from each other, so as to adjust the distance between the two fork assemblies (220).

10. A double-column stacker according to claim 9, characterized in that: The shelf (210) is provided with a second drive assembly (240), and the fork assembly (220) comprises: A mounting arm (221) is slidably mounted on the shelf (210), the mounting arm (221) is connected to the first driving assembly (230), the mounting arm (221) is provided with a first rack (810), and is provided with at least two first gears (850) that are rotatable and meshed in sequence, one of the first gears (850) is connected to the second driving assembly (240); An extension arm (222) is slidably mounted on the mounting arm (221), the extension arm (222) being provided with a second rack (840) and at least two second gears (820) which are rotatable and meshed in sequence, the first rack (810) being meshed with at least one of the second gears (820), and the second rack (840) being meshed with at least one of the first gears (850); A fork arm (223) is slidably arranged on the extension arm (222), and the fork arm (223) is provided with a third rack (830), and the third rack (830) is meshed with at least one of the second gears (820). The second drive assembly (240) can drive the first gear (850) to operate, so as to drive the extension arm (222) to move linearly through the second rack (840), wherein the second gear (820) on the linearly moving extension arm (222) operates under the action of the first rack (810), so as to be able to drive the fork arm (223) to make a linear movement in the same direction as the extension arm (222) through the third rack (830).

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