Stacking machine

Abstract

The utility model relates to the technical field of logistics equipment, in particular to a stacking machine which comprises a stacking machine body, a ground rail changing assembly and a sky rail changing assembly, the bottom of the stacking machine body is fixedly connected with a base assembly, and the lower side of the base assembly is rotationally connected with a rotating assembly. According to the device, the rotating assemblies, the driving assembly, the detection assembly and the top assembly are arranged, the device is guided through the two rotating assemblies capable of rotating relative to the stacking machine body, the driving assembly is used for driving, the stacking machine body can be driven to linearly run or turn, and meanwhile the stacking machine body is more stable during running through the top assembly; the operation state of the stacking machine body is monitored through the detection assembly, the stacking machine body can smoothly operate on the linear track or the bent track, the stacking machine body has high flexibility, meanwhile, rapid track changing can be achieved, and the operation method is simple.

Description

Technical Field

[0001] The utility model relates to the technical field of logistics equipment, in particular to a stacker. Background Art

[0002] A stacker crane is a type of lifting and stacking equipment that can run along tracks within the warehouse, store and retrieve goods on any shelf, and complete the entry and exit of goods. It can greatly increase the area and space utilization of the high-bay warehouse and is the most important equipment in the automated high-bay warehouse.

[0003] Some existing stackers have some problems during use: first, the running mechanism of the existing stacker is relatively simple, and only cooperates with the guide wheels, rolling wheels and tracks, and cannot run smoothly on curved tracks, making the stacker less flexible; second, the track mechanism coordinated with the existing stacker is relatively simple, and cannot achieve rapid track change, and there is a lack of specific track change methods. Therefore, a stacker is proposed to address the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a stacker to solve the problems that the existing stacker has a relatively simple traveling mechanism and cannot run smoothly on a curved track, and the existing stacker has a relatively simple track mechanism and cannot achieve rapid track change.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A stacker, comprising a stacker body, a ground rail track changing assembly and a ceiling rail track changing assembly, wherein the bottom of the stacker body is fixedly connected to a base assembly, the lower side of the base assembly is rotatably connected to a rotating assembly, a driving assembly is provided on the inner side of the rotating assembly, the rear side of the driving assembly is fixedly connected to a detection assembly, and the top of the stacker body is fixedly connected to a top assembly; the base assembly comprises a first fixed plate and a support frame, the upper sides of the two first fixed plates are fixedly connected to the stacker body, the lower sides of the first fixed plates are fixedly connected to the support frame, and the support The lower side of the frame is fixedly connected to a first ground rail limiting plate, the opposite inner sides of the two first ground rail limiting plates are fixedly connected to a pair of limiting shafts, a first support frame is fixedly connected between the two first ground rail limiting plates, the upper side of the first support frame is fixedly connected to a reinforcing plate, the lower side of the first support frame is fixedly connected to a second ground rail limiting plate, the interior of the support frame is rotatably connected to a rotating shaft, the rotating assembly includes a rotating shaft and a mounting frame, the lower sides of the two rotating shafts are fixedly connected to a mounting frame, and the inner side of the mounting frame is fixedly connected to a pair of first mounting plates. A pair of first guide wheels are rotatably connected to the inside of the first mounting plate, a pair of first limit shells are fixedly connected to the inner side of the mounting frame, and a positioning plate is fixedly connected to the left side of the mounting frame on the left, the driving assembly includes a first limit shell and a second limit shell, each pair of the first limit shells is fixedly connected to the relative outer sides, and each pair of the second limit shells is rotatably connected to the relative inner sides of the second limit shells, the rear side of the positioning plate is fixedly connected to the driving motor, the main shaft of the driving motor is fixedly connected to the driving wheel on the left, and the first limit shells at the rear side are fixedly connected to the extension frame, the detection assembly includes an extension frame and a pressure sensor, and the rear sides of the two extension frames are fixedly connected to the pressure sensor, the top assembly includes a second fixed plate and a second support frame, the lower sides of the two second fixed plates are fixedly connected to the stacker body, the upper side of the second fixed plate is fixedly connected to the second support frame, the front and rear sides of the second support frame are rotatably connected to a pair of rolling wheels, the upper side of the second support frame is rotatably connected to two second mounting plates, and the upper side of the second mounting plate is rotatably connected to a pair of second guide wheels.

[0007] Preferably, a circular slot is provided in the middle position of the two first fixed plates, a rotating slot is provided inside the support frame, the first floor rail limiting plate and the second floor rail limiting plate have the same shape, the first floor rail limiting plate and the second floor rail limiting plate are both provided with a "T"-shaped groove, there are two pairs of first mounting plates, and there are four pairs of first guide wheels.

[0008] Preferably, there are two pairs of the first limiting shells and the second limiting shells, the first limiting shells are each provided with a through groove, the second limiting shells are each a cylindrical shell, and the second limiting shells are each provided with a circular hole. The main shaft of the driving motor passes through the second limiting shell located at the left rear, and the two extension frames and the two pressure sensors are symmetrically distributed on the left and right.

[0009] Preferably, the two second fixing plates are symmetrically distributed on the left and right, the left and right parts of the second support frame are provided with rotation slots, the top of the second support frame and the top of the second mounting plate are located in the same horizontal plane, the top of the rolling wheel and the top of the second guide wheel are located in the same horizontal plane, and there are two pairs of second guide wheels.

[0010] Preferably, the ground rail track changing assembly includes a first fixed seat and a first sliding seat, the upper side of the first fixed seat is slidably connected to the first sliding seat, the upper side of the first sliding seat is fixedly connected to the first straight rail and the first curved rail, the upper side of the first fixed seat is fixedly connected to the first track changing motor, the outer side of the main shaft of the first track changing motor is sleeved with a first transmission belt, the end of the first transmission belt is fixedly connected to the first sliding seat, the overhead rail track changing assembly includes a second fixed seat and a second sliding seat, the lower side of the second fixed seat is slidably connected to the second sliding seat, the lower side of the second sliding seat is fixedly connected to the second straight rail and the second curved rail, the lower side of the second fixed seat is fixedly connected to the second track changing motor, the outer side of the main shaft of the second track changing motor is sleeved with a second transmission belt, and the end of the second transmission belt is fixedly connected to the second sliding seat.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] In the utility model, by providing a base assembly, a rotating assembly, a driving assembly, a detection assembly and a top assembly, the device is guided by two rotating assemblies that can rotate relative to the stacker body, and is driven by the driving assembly, so that the stacker body can be driven to run in a straight line or turn. At the same time, the top assembly makes the stacker body more stable during operation. The detection assembly monitors the operating status of the stacker body, so that the stacker body can run smoothly on a straight track or a curved track, so that the stacker body has high flexibility, can realize rapid track change, and the operation method is relatively simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall structure of the stacker of the utility model;

[0014] Figure 2 This is a schematic diagram of the installation structure of the base assembly of the utility model;

[0015] Figure 3 This is a schematic diagram of the support frame installation structure of the utility model;

[0016] Figure 4 This is a schematic diagram of the installation structure of the reinforcement plate of the utility model;

[0017] Figure 5 This is a schematic diagram of the rotating shaft installation structure of the utility model;

[0018] Figure 6 This is a schematic diagram of the installation structure of the limit housing of the utility model;

[0019] Figure 7 This is a schematic diagram of the drive wheel installation structure of the utility model;

[0020] Figure 8 This is a schematic diagram of the installation structure of the extension frame of the utility model;

[0021] Figure 9 This is a schematic diagram of the installation structure of the pressure sensor of the utility model;

[0022] Figure 10 This is a schematic diagram of the installation structure of the rolling wheel of the utility model;

[0023] Figure 11 This is a schematic diagram of the structure of the ground rail track changing assembly of the utility model;

[0024] Figure 12 This is a schematic diagram of the structure of the sky rail track changing assembly of the utility model;

[0025] Figure 13 This is a schematic diagram of the first curved rail installation structure of the utility model;

[0026] Figure 14 This is a top view of the first curved rail installation structure of the utility model;

[0027] Figure 15 This is a schematic diagram of the installation structure of the second curved rail of the utility model;

[0028] Figure 16 This is a bottom view of the second curved rail installation structure of the present invention.

[0029] In the figure: 1. Stacker body; 2. Base assembly; 201. First fixed plate; 202. Support frame; 203. First floor rail limit plate; 204. Limiting shaft; 205. First support frame; 206. Reinforcement plate; 207. Second floor rail limit plate; 3. Rotating assembly; 301. Rotating shaft; 302. Mounting frame; 303. First mounting plate; 304. First guide wheel; 4. Driving assembly; 401. First limit shell; 402. Second limit shell; 403. Driving wheel; 404. Positioning plate; 405. Driving motor; 5. Detection assembly; 501. Extension frame; 502. Pressure sensor; 6. Top assembly; 601. Second fixed plate; 602. Second support frame; 603. Rolling wheel; 604. Second mounting plate; 605. Second guide wheel; 7. Ground rail track changing assembly; 701. First fixed seat; 702. First sliding seat; 703. First straight rail; 704. First curved rail; 705. First track changing motor; 706. First transmission belt; 8. Overhead rail track changing assembly; 801. Second fixed seat; 802. Second sliding seat; 803. Second straight rail; 804. Second curved rail; 805. Second track changing motor; 806. Second transmission belt. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] In the description of the present invention, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0032] In addition, it should be noted that the use of words such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the scope of protection of this utility model.

[0033] See also Figure 1-16 , the utility model provides a technical solution:

[0034] A stacker, comprising a stacker body 1, a ground rail change assembly 7 and a ceiling rail change assembly 8, the bottom of the stacker body 1 is fixedly connected to a base assembly 2, the lower side of the base assembly 2 is rotatably connected to a rotating assembly 3, the inner side of the rotating assembly 3 is provided with a driving assembly 4, the rear side of the driving assembly 4 is fixedly connected to a detection assembly 5, and the top of the stacker body 1 is fixedly connected to a top assembly 6; the base assembly 2 comprises a first fixed plate 201 and a support frame 202, the upper sides of the two first fixed plates 201 are fixedly connected to the stacker body 1, the lower sides of the first fixed plates 201 are fixedly connected to the support frame 202, and the lower sides of the support frame 202 are fixedly connected to the first ground rail limit The two first floor rail limiting plates 203 are fixedly connected to a pair of limiting shafts 204 on their opposite inner sides. A first support frame 205 is fixedly connected between the two first floor rail limiting plates 203. A reinforcing plate 206 is fixedly connected to the upper side of the first support frame 205. The lower side of the first support frame 205 is fixedly connected to the second floor rail limiting plate 207. The interior of the support frame 202 is rotatably connected to a rotating shaft 301. The rotating assembly 3 includes a rotating shaft 301 and a mounting frame 302. The lower sides of the two rotating shafts 301 are fixedly connected to the mounting frame 302. The inner sides of the mounting frames 302 are fixedly connected to a pair of first mounting plates 303. The inner sides of the first mounting plates 303 are fixedly connected. The first and second limiting shells 401 are fixedly connected to each other on the inner side of the mounting bracket 302, and the positioning plate 404 is fixedly connected to the left side of the mounting bracket 302. The driving assembly 4 includes a first limiting shell 401 and a second limiting shell 402. The relative outer sides of each pair of first limiting shells 401 are fixedly connected to a pair of second limiting shells 402, and the relative inner sides of each pair of second limiting shells 402 are rotatably connected to the driving wheel 403. The rear side of the positioning plate 404 is fixedly connected to a driving motor 405. The main shaft of the driving motor 405 is fixedly connected to the driving wheel 403 on the left. The first limiting shells 401 at the rear side are fixedly connected to the first limiting shells 401 and the second limiting shells 402. An extension frame 501 is fixedly connected, the detection component 5 includes an extension frame 501 and a pressure sensor 502, the rear sides of the two extension frames 501 are fixedly connected with the pressure sensor 502, the top component 6 includes a second fixed plate 601 and a second support frame 602, the lower sides of the two second fixed plates 601 are fixedly connected to the stacker body 1, the upper side of the second fixed plate 601 is fixedly connected with the second support frame 602, the front and rear sides of the second support frame 602 are rotatably connected with a pair of rolling wheels 603, the upper side of the second support frame 602 is rotatably connected with two second mounting plates 604, and the upper side of the second mounting plate 604 is rotatably connected with a pair of second guide wheels 605.

[0035] The middle positions of the two first fixed plates 201 are both provided with circular notches, the interior of the support frame 202 is provided with rotating notches, the first ground rail limiting plate 203 and the second ground rail limiting plate 207 are of the same shape, the first ground rail limiting plate 203 and the second ground rail limiting plate 207 are both provided with "T"-shaped grooves, the first mounting plate 303 has two pairs, the first guide wheel 304 has four pairs, and the device can be adapted to the curved track through the base assembly 2 and the rotating assembly 3; the first limiting shell 401 and the second limiting shell 402 each have two pairs, the first limiting shell 401 is provided with a through groove, and the second limiting shell 402 is a cylindrical shell, The second limiting shell 402 is provided with a circular hole, the main shaft of the driving motor 405 passes through the second limiting shell 402 located at the left rear, the two extension frames 501 and the two pressure sensors 502 are symmetrically distributed on the left and right, the driving component 4 can make the device move along a straight track or a curved track, and the detection component 5 can monitor the operating status of the device; the two second fixing plates 601 are symmetrically distributed on the left and right, the left and right parts of the second support frame 602 are provided with rotating slots, the top of the second support frame 602 and the top of the second mounting plate 604 are located on the same horizontal plane, the top of the scroll wheel 603 and the first The tops of the two guide wheels 605 are located in the same horizontal plane. There are two pairs of second guide wheels 605. The top assembly 6 can make the device more stable when moving; the ground rail track change assembly 7 includes a first fixed seat 701 and a first sliding seat 702. The upper side of the first fixed seat 701 is slidably connected to the first sliding seat 702. The upper side of the first sliding seat 702 is fixedly connected to the first straight rail 703 and the first curved rail 704. The upper side of the first fixed seat 701 is fixedly connected to the first track change motor 705. The outer side of the main shaft of the first track change motor 705 is provided with a first transmission belt 706. The end of the first transmission belt 706 It is fixedly connected to the first sliding seat 702, and the overhead rail track changing assembly 8 includes a second fixed seat 801 and a second sliding seat 802. The lower side of the second fixed seat 801 is slidably connected to the second sliding seat 802, and the lower side of the second sliding seat 802 is fixedly connected to the second straight rail 803 and the second curved rail 804. The lower side of the second fixed seat 801 is fixedly connected to the second track changing motor 805, and the outer side of the main shaft of the second track changing motor 805 is sleeved with a second transmission belt 806. The end of the second transmission belt 806 is fixedly connected to the second sliding seat 802, and the track can be changed by the ground rail track changing assembly 7 and the overhead rail track changing assembly 8.

[0036] Workflow: Before use, install the floor rail change assembly 7 and the ceiling rail change assembly 8 on the warehouse floor and roof respectively, and install the whole set of fixed rails on the warehouse floor and roof. The device is equipped with an external controller. The external controller of the device can control the operation status of the drive assembly 4, the floor rail change assembly 7 and the ceiling rail change assembly 8. The bottom of the stacker body 1 of the device is fixedly connected with the base assembly 2, the base assembly 2 and the rotating assembly 3 are rotatably connected, the direction of the drive assembly 4 can rotate synchronously with the rotating assembly 3, the side of the drive assembly 4 is fixedly connected with the detection assembly 5, and the top of the stacker body 1 is fixedly connected with the top assembly 6; when using the device, first adjust the track, and synchronously start the first fixed seat 701 fixedly connected through the external controller The first track-changing motor 705 and the second track-changing motor 805 fixedly connected to the second fixed seat 801 make the first track-changing motor 705 and the second track-changing motor 805 rotate forward, and the first transmission belt 706 is driven to run by the first track-changing motor 705, and the second transmission belt 806 is driven to run by the second track-changing motor 805, which can respectively drive the first sliding seat 702 and the second sliding seat 802 to move obliquely forward, so that the first straight track 703 and the second straight track 803 respectively form straight tracks with the fixed track, and then drive the stacker body 1, and start the drive motor 405 fixedly connected to the positioning plate 404 through the external controller, and the drive motor 405 is used to rotate the drive wheel 403 on the left, thereby making the two drive wheels 403 synchronized. The first limiting shell 401 and the second limiting shell 402 can limit the driving wheel 403, and the mounting frame 302 is connected by the rotating shaft 301, which can rotate relative to the stacker body 1. The mounting frame 302 and the first mounting plate 303 can limit the first guide wheel 304. The driving wheel 403 and the first guide wheel 304 cooperate with each other to make the driving wheel 403 located on the upper side of the connected track and the first guide wheel 304 located on the front and rear sides of the connected track. The track passes through the through groove at the bottom of the mounting frame 302. The mounting frame 302 can prevent the rotating component 3 from leaving the track. The two support frames 202 are connected to the stacker body 1 through the first fixing plate 201. The limiting shaft 204 connected to the first ground rail limiting plate 203 can limit the second The ground rail limiting plate 207 is limited, and the reinforcing plate 206 on the upper side of the first supporting frame 205 can improve the structural strength of the first supporting frame 205. The second ground rail limiting plate 207 on the lower side of the first supporting frame 205 is consistent in shape with the first ground rail limiting plate 203. The bottoms of the first ground rail limiting plate 203 and the second ground rail limiting plate 207 are also provided with through grooves, and the through grooves at the bottoms of the first ground rail limiting plate 203 and the second ground rail limiting plate 207 are large, ensuring that the first ground rail limiting plate 203 and the second ground rail limiting plate 207 can move with the stacker body 1 when the track has a certain curvature. At the same time, the second supporting frame 602 is connected to the stacker body 1 through the second fixing plate 601, and the top of the rolling wheel 603 is in contact with the connected track.A pair of rotatable second guide wheels 605 are provided on the upper sides of the two rotatable second mounting plates 604. The paired second guide wheels 605 are located on the front and rear sides of the connected track, which can make the stacker body 1 more stable when moving. The driving component 4 moves along the connected linear track, and the rotating component 3 and the top component 6 can cooperate with the driving component 4 to move synchronously, so that the stacker body 1 can stably perform linear motion, and the pressure sensor 502 connected to the extension frame 501 can contact the shelves in the warehouse. By detecting the pressure exerted by the stacker body 1 on the shelves, it can be determined whether the stacker body 1 is operating normally. If the pressure of the stacker body 1 on the shelves is too large, it needs to be repaired; if the stacker body 1 needs to turn, it only needs to reverse the first track changing motor 705 and the second track changing motor 805 to make the first sliding seat 702 and the second sliding seat 802 move obliquely backward. The first curved rail 704 and the second curved rail 804 respectively form a turning track with the fixed track. The drive motor 405 is started by an external controller, and the drive component 4 moves along the connected turning track. The rotating component 3 and the top component 6 can move synchronously with the driving component 4, so that the stacker body 1 can stably turn and change tracks. The device is guided by two rotating components 3 that can rotate relative to the stacker body 1. The driving component 4 drives the stacker body 1 to move in a straight line or turn. At the same time, the top component 6 makes the stacker body 1 more stable during operation. The detection component 5 monitors the operating status of the stacker body 1, so that the stacker body 1 can run smoothly on the straight track or the curved track, making the stacker body 1 highly flexible and able to achieve rapid track change. The operation method is relatively simple.

[0037] Any matters not described in detail in this specification are prior art known to those skilled in the art. Standard parts used in this utility model are commercially available, and special-shaped parts can be customized according to the description in the specification and the accompanying drawings. The specific connection methods of each part are all conventional means such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts, and equipment are all conventional models in the prior art, and the circuit connections use conventional connection methods in the prior art, which will not be described in detail here.

[0038] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A stacker, comprising a stacker body (1), a ground rail change assembly (7) and a ceiling rail change assembly (8), characterized in that: The bottom of the stacker main body (1) is fixedly connected to a base assembly (2), the lower side of the base assembly (2) is rotatably connected to a rotating assembly (3), the inner side of the rotating assembly (3) is provided with a driving assembly (4), the rear side of the driving assembly (4) is fixedly connected to a detection assembly (5), and the top of the stacker main body (1) is fixedly connected to a top assembly (6);The base assembly (2) comprises a first fixing plate (201) and a support frame (202), the upper sides of the two first fixing plates (201) are fixedly connected to the stacker body (1), the lower sides of the first fixing plates (201) are fixedly connected to the support frame (202), the lower sides of the support frames (202) are fixedly connected to first ground rail limit plates (203), the opposite inner sides of the two first ground rail limit plates (203) are fixedly connected to a pair of limit shafts (204), a first support frame (205) is fixedly connected between the two first ground rail limit plates (203), the upper side of the first support frame (205) is fixedly connected to a reinforcing plate (206), and the first support frame The lower side of the support frame (205) is fixedly connected to a second ground rail limiting plate (207), the interior of the support frame (202) is rotatably connected to a rotating shaft (301), the rotating assembly (3) comprises a rotating shaft (301) and a mounting frame (302), the lower sides of the two rotating shafts (301) are fixedly connected to the mounting frame (302), the inner sides of the mounting frames (302) are fixedly connected to a pair of first mounting plates (303), the interiors of the first mounting plates (303) are rotatably connected to a pair of first guide wheels (304), the inner sides of the mounting frames (302) are fixedly connected to a pair of first limiting shells (401), and the left side of the mounting frame (302) on the left is fixedly connected to the first guide wheel (304). There is a positioning plate (404), the driving component (4) includes a first limiting shell (401) and a second limiting shell (402), each pair of the first limiting shells (401) are fixedly connected to the relative outer sides of a pair of second limiting shells (402), each pair of the second limiting shells (402) are rotatably connected to the relative inner sides of the second limiting shells (402), the rear side of the positioning plate (404) is fixedly connected to a driving motor (405), the main shaft of the driving motor (405) is fixedly connected to the driving wheel (403) located on the left, the first limiting shell (401) located on the rear side is fixedly connected to an extension frame (501), the detection component (5) includes an extension frame (501) and a pressure sensor (5 02), the rear sides of the two extension frames (501) are fixedly connected to a pressure sensor (502), the top assembly (6) includes a second fixed plate (601) and a second support frame (602), the lower sides of the two second fixed plates (601) are fixedly connected to the stacker body (1), the upper side of the second fixed plate (601) is fixedly connected to the second support frame (602), the front and rear sides of the second support frame (602) are both rotatably connected to a pair of rolling wheels (603), the upper side of the second support frame (602) is rotatably connected to two second mounting plates (604), and the upper sides of the second mounting plates (604) are both rotatably connected to a pair of second guide wheels (605). ; 2. A stacker according to claim 1, characterized in that: The middle positions of the two first fixing plates (201) are both provided with circular notches, the interior of the support frame (202) is both provided with rotation notches, the first floor rail limiting plate (203) and the second floor rail limiting plate (207) are of the same shape, the first floor rail limiting plate (203) and the second floor rail limiting plate (207) are both provided with "T"-shaped grooves, the first mounting plates (303) are provided with two pairs, and the first guide wheels (304) are provided with four pairs.

3. The stacker according to claim 1, wherein: There are two pairs of the first limiting shell (401) and the second limiting shell (402), each of the first limiting shells (401) is provided with a through slot, and each of the second limiting shells (402) is a cylindrical shell. Each of the second limiting shells (402) is provided with a circular hole, and the main shaft of the driving motor (405) passes through the second limiting shell (402) located at the left rear, and the two extension frames (501) and the two pressure sensors (502) are symmetrically distributed on the left and right.

4. The stacker according to claim 1, characterized in that: The two second fixing plates (601) are symmetrically distributed on the left and right sides, the left and right parts of the second support frame (602) are both provided with rotation slots, the top of the second support frame (602) and the top of the second mounting plate (604) are located on the same horizontal plane, the top of the rolling wheel (603) and the top of the second guide wheel (605) are located on the same horizontal plane, and there are two pairs of second guide wheels (605).

5. The stacker according to claim 1, characterized in that: The ground rail track changing assembly (7) comprises a first fixed seat (701) and a first sliding seat (702), wherein the upper side of the first fixed seat (701) is slidably connected to the first sliding seat (702), the upper side of the first sliding seat (702) is fixedly connected to a first straight rail (703) and a first curved rail (704), the upper side of the first fixed seat (701) is fixedly connected to a first track changing motor (705), the outer side of the main shaft of the first track changing motor (705) is sleeved with a first transmission belt (706), and the end of the first transmission belt (706) is fixedly connected to the first sliding seat (702). The overhead rail track changing assembly (8) comprises a second fixed seat (801) and a second sliding seat (802), wherein the lower side of the second fixed seat (801) is slidably connected to the second sliding seat (802), the lower side of the second sliding seat (802) is fixedly connected to a second straight track (803) and a second curved track (804), the lower side of the second fixed seat (801) is fixedly connected to a second track changing motor (805), the outer side of the main shaft of the second track changing motor (805) is sleeved with a second transmission belt (806), and the end of the second transmission belt (806) is fixedly connected to the second sliding seat (802).

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