Automatic warehousing system

Abstract

The invention relates to an automatic warehousing system, and relates to the field of warehousing, the automatic warehousing system comprises a conveying module, two lifting modules and two placing modules, the conveying module comprises a first conveying belt and two second conveying belts, and the two second conveying belts are both located on the same side of the first conveying belt; the two lifting modules each comprise a first supporting frame and a second supporting frame, the two placing modules each comprise a lifting frame, the two lifting frames are located at the ends, away from the first conveying belt, of the two second conveying belts correspondingly and are adjacent to the second conveying belts, and first sliding rails are fixedly arranged on the surfaces of the first supporting frames and the surfaces of the second supporting frames correspondingly; the surfaces of the two first sliding rails are each slidably sleeved with two first sliding blocks, and the two sides of the lifting frame are fixedly connected with the two first sliding blocks correspondingly. The placing module is lifted through the first supporting frame, the second supporting frame, the first motor and the lead screw, so that the high goods shelf storage device can be suitable for storage of high goods shelves during use, and the application range is wide.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of warehousing, in particular to an automatic warehousing system. BACKGROUND

[0002] Warehousing refers to the storage and preservation of goods in warehouses, and is a key node connecting the production end and the consumption end in the logistics supply chain, realizing the safe storage and efficient turnover of goods after production.

[0003] In the traditional warehousing mode, the whole process of storing the packaging box needs to be manually guided. The workers need to first carry the packaging box from the warehouse area to the corresponding shelf, then use tools such as ladders and manual forklifts to lift the packaging box to the target shelf layer, and finally manually adjust the position of the packaging box in the shelf. The whole process relies on manual operation and is limited by the working rest and physical strength of the workers. At the same time, the whole storage process is relatively cumbersome, resulting in low storage efficiency. SUMMARY

[0004] 1. Technical problems solved The purpose of the present application is to provide an automatic warehousing system to solve the problem that the whole process of storing the packaging box needs to be manually guided. The workers need to first carry the packaging box from the warehouse area to the corresponding shelf, then use tools such as ladders and manual forklifts to lift the packaging box to the target shelf layer, and finally manually adjust the position of the packaging box in the shelf. The whole process relies on manual operation and is limited by the working rest and physical strength of the workers. At the same time, the whole storage process is relatively cumbersome, resulting in low storage efficiency.

[0005] The automatic warehousing system provided by the present application adopts the following technical scheme: a conveying module and two lifting modules and two placing modules, the conveying module includes a first conveying belt and two second conveying belts, the two second conveying belts are on the same side of the first conveying belt, the two lifting modules each include a first support frame and a second support frame, and the two placing modules each include a lifting frame, the two lifting frames are respectively located at one end of the two second conveying belts away from the first conveying belt and adjacent to the second conveying belts; The first support frame and the second support frame are both fixedly provided with first sliding rails on the surfaces, two first sliding blocks are slidably sleeved on the surfaces of the two first sliding rails, the lifting frames are both fixedly connected between the two first sliding blocks on the two sides, a connecting frame is fixedly arranged on one side of the lifting frame, a lead screw mounting seat is fixedly arranged at the lower end of the first support frame, a lead screw is rotatably arranged in the lead screw mounting seat, the lead screw is threadedly connected between the connecting frame, a first motor mounting frame is fixedly arranged at the upper end of the first support frame, a first motor is fixedly arranged on the upper end of the first motor mounting frame, and the output end of the first motor is fixedly connected with the upper end of the lead screw through a shaft coupling. By adopting the above technical scheme, the placing module is lifted through the first support frame, the second support frame, the first motor and the lead screw, so that it can be suitable for storing high shelves in use, and the application range is wide. Meanwhile, the first motor is started in the use process, the first motor drives the lead screw to rotate, the lead screw drives the connecting frame to move after rotating, and the lifting frame is driven to move through the connecting frame. The lifting frame is connected with the first sliding rail installed on the first support frame and the second support frame through the first sliding block. The first sliding rail can ensure that the lifting frame always moves stably along a straight line in the process of moving the lifting frame.

[0006] Preferably, two extension plates are fixedly arranged on the two sides of each lifting frame, a fixed frame is fixedly arranged at the upper end of each extension plate, a limiting frame is fixedly arranged at the upper end of each fixed frame, a moving frame is slidably arranged in each limiting frame, and a rack is fixedly arranged at the lower end of each moving frame. By adopting the above technical scheme, the limiting frame is used for limiting the moving direction of the moving frame, so that the moving frame always moves linearly in use. Meanwhile, the limiting frame can support the moving frame.

[0007] Preferably, a second motor mounting frame is fixedly arranged on the surface of each fixed frame, a second motor is fixedly arranged on the surface of each second motor mounting frame, the output end of each second motor penetrates through the fixed frame and is fixedly provided with a gear, and the two gears are respectively engaged with the two racks. By adopting the above technical scheme, two second motors are started in use, and the two second motors drive the two gears to rotate at the same time. Because the gears are engaged with the racks, the rotation of the two gears will drive the two racks to move synchronously, so that the two moving frames move synchronously with the racks.

[0008] Preferably, a cross frame is fixedly arranged between the two moving frames, a linear module is fixedly arranged in the cross frame, a third motor is fixedly arranged at one end of the linear module, the output end of the third motor is connected with a threaded rod in the linear module through a shaft coupling, a fixed seat is fixedly arranged on the surface of a sliding table in the linear module, a second sliding rail is fixedly arranged in the cross frame close to the linear module, two second sliding blocks are slidably arranged outside the second sliding rail, and the two second sliding blocks are fixedly connected with the fixed seat. By adopting the above technical scheme, the third motor is started in use, the third motor drives the fixed seat and the support to move through the linear module, so as to drive the bidirectional module mounting frame and the bidirectional module to move, and then adjust the horizontal position of the mounting box.

[0009] Preferably, the fixing seat surface is fixedly provided with a support, the lower end of the support is fixedly provided with a bidirectional module mounting frame, the surface of the bidirectional module mounting frame is fixedly provided with a bidirectional module, one end of the bidirectional module is fixedly provided with a fourth motor, the output end of the fourth motor is connected with a bidirectional screw rod in the bidirectional module through a shaft coupling, and the surfaces of two sliding tables in the bidirectional module are respectively fixedly provided with clamping plates. By adopting the above technical scheme, when in use, the fourth motor is started, and the fourth motor drives the two clamping plates to move towards or away from each other through the bidirectional module.

[0010] Preferably, the upper end of the first conveying belt is fixedly provided with a plurality of blocking frames, the side of the first conveying belt is fixedly provided with two first cylinder mounting frames at positions corresponding to the two second conveying belts respectively, the surfaces of the two first cylinder mounting frames are fixedly provided with first cylinders respectively, and the telescopic ends of the two first cylinders are all fixedly provided with a push plate and penetrate through the first cylinder mounting frames. By adopting the above technical scheme, when in use, the first cylinder is started when the packaging box moves to a specified position, the first cylinder drives the push plate to move and then pushes the packaging box to move until the packaging box is pushed onto the second conveying belt.

[0011] Preferably, the lower end of the side of the first conveying belt is fixedly provided with two second cylinder mounting frames at positions corresponding to the two blocking plates respectively, the lower ends of the two second cylinder mounting frames are fixedly provided with second cylinders respectively, and the telescopic ends of the two second cylinders are all fixedly connected with the lower ends of the two blocking plates and penetrate through the second cylinder mounting frames. By adopting the above technical scheme, the second cylinder is started, and after the second cylinder is started, the blocking plate is driven to move upwards to block the packaging box, so that the packaging box is prevented from continuing to move.

[0012] Preferably, a plurality of fixed cross beams are fixedly arranged between the first support frame and the second support frame. By adopting the above technical scheme, the fixed cross beams are used for connecting the first support frame and the second support frame, and meanwhile, the connection strength is ensured, and in actual use, the spacing between the plurality of fixed cross beams can be adjusted according to the actual height of the goods shelf.

[0013] 2. Beneficial effects In summary, the present application has at least one of the following beneficial technical effects: 1. The present application provides an automatic warehousing system, which installs the shelf device beside the shelf, ensures that each placing module corresponds to the corresponding shelf, sets the conveying module and the lifting module, puts the packaging box on the first conveying belt during use, starts the first conveying belt to convey the packaging box, starts the second cylinder when the packaging box moves to the position of the second conveying belt of the corresponding shelf, drives the baffle to move upwards to block the installation box, then starts the corresponding two first cylinders, the two first cylinders drive the push plate to move, and then push the packaging box to the second conveying belt, then the second conveying belt drives the packaging box to move until the packaging box is conveyed to the lifting frame, then starts the fourth motor, the fourth motor drives the two clamping plates to move towards each other through the bidirectional module to clamp the packaging box, then starts the first motor, the first motor drives the screw to rotate, thereby driving the lifting frame to move upwards, when the lifting frame moves to the preset position, the first motor is turned off, then the two second motors are started at the same time, the two second motors drive the two gears to rotate synchronously, because the gears are engaged with the moving frame, so the second motor is started to drive the moving frame to move through the gears, and the packaging box moves synchronously, thereby making the packaging box enter the inside of the shelf, and the position of the packaging box extending into the shelf can be adjusted through the second motor, the third motor is started, the third motor drives the fixing seat, the supporting piece and the packaging box to move through the linear module, thereby adjusting the horizontal position of the packaging box in the shelf, when the position adjustment is completed, the first motor is started, the first motor drives the lifting frame to move through the screw until the packaging box is put down, then the fourth motor is started, the fourth motor drives the two clamping plates to move in opposite directions through the bidirectional module, thereby releasing the packaging box, and the automatic storage of the packaging box is completed, the whole goods storage process does not need manual participation, thereby improving the storage efficiency when working without being limited by human rest and physical strength, and the placing module is lifted through the first supporting frame, the second supporting frame, the first motor and the screw, so that it can be applied to the storage of high shelves during use, and the application range is wide. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the overall structure schematic diagram of the present application; Figure 2 It is the second conveying belt and lifting frame position structure schematic diagram of the present application; Figure 3 It is the lifting frame installation structure schematic diagram of the present application; Figure 4 It is the screw installation structure schematic diagram of the present application; Figure 5 It is the moving frame installation structure schematic diagram of the present application; Figure 6 It is the clamping plate installation structure schematic diagram of the present application; Figure 7 It isFigure 1 Structure enlarged view at middle A; Figure 8 For Figure 2 Structure enlarged view at middle B; Figure 9 For Figure 4 Structure enlarged view at middle C; Figure 10 For Figure 3 Structure enlarged view at middle D; Figure 11 For Figure 3 Structure enlarged view at middle E.

[0015] Wherein, 1, conveying module; 101, first conveying belt; 102, second conveying belt; 103, blocking frame; 104, first air cylinder mounting frame; 105, first air cylinder; 106, push plate; 107, positioning frame; 108, baffle; 109, second air cylinder mounting frame; 110, second air cylinder; 1. Lifting module; 201, first support frame; 202, second support frame; 203, fixed crossbeam; 204, first sliding rail; 205, first sliding block; 206, lead screw; 207, lead screw mounting seat; 208, first motor mounting frame; 209, first motor; 3, placing module; 301, lifting frame; 302, connecting frame; 303, extension plate; 304, fixed frame; 305, limiting frame; 306, moving frame; 307, rack; 308, second motor mounting frame; 309, second motor; 310, gear; 311, cross frame; 312, linear module; 313, third motor; 314, second sliding rail; 315, second sliding block; 316, fixed seat; 317, support; 318, bidirectional module mounting frame; 319, bidirectional module; 320, fourth motor; 321, clamping plate. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings Figure 1 - the drawings Figure 11 , the present application is further described in detail.

[0017] Embodiment 1: An automated warehousing system comprises a conveying module 1 and two lifting modules 2 and two placing modules 3, the conveying module 1 comprises a first conveying belt 101 and two second conveying belts 102, the two second conveying belts 102 are on the same side of the first conveying belt 101, the two lifting modules 2 each comprise a first support frame 201 and a second support frame 202, a plurality of fixed cross beams 203 are fixedly arranged between the first support frame 201 and the second support frame 202, the plurality of fixed cross beams 203 are arranged in a straight line array, the fixed cross beams 203 are used to connect the first support frame 201 and the second support frame 202 while ensuring the connection strength, the spacing between the plurality of fixed cross beams 203 can be adjusted according to the actual height of the goods shelf during actual use, the two placing modules 3 each comprise a lifting frame 301, the two lifting frames 301 are respectively located at one end of the two second conveying belts 102 away from the first conveying belt 101 and adjacent to the second conveying belt 102, the first support frame 201 and the second support frame 202 are each fixedly provided with a first sliding rail 204 on the surface, the two first sliding rails 204 are each slidably sleeved with two first sliding blocks 205, the lifting frame 301 is fixedly connected between the two first sliding blocks 205 on both sides, the lifting frame 301 is fixedly provided with a connecting frame 302 on one side, a lead screw mounting seat 207 is fixedly arranged at the lower end of the first support frame 201, a lead screw 206 is rotatably arranged in the lead screw mounting seat 207, the lead screw 206 is threadedly connected between the connecting frame 302, a first motor mounting frame 208 is fixedly arranged at the upper end of the first support frame 201, a first motor 209 is fixedly arranged on the upper end of the first motor mounting frame 208, and the output end of the first motor 209 is fixedly connected with the upper end of the lead screw 206 through a shaft coupling; Two lifting frames 301 are fixedly provided with extension plates 303 on both sides, the upper ends of the two extension plates 303 are fixedly provided with fixed frames 304, the upper ends of the two fixed frames 304 are fixedly provided with limiting frames 305, the inner parts of the two limiting frames 305 are slidably provided with moving frames 306, the lower ends of the two moving frames 306 are fixedly provided with racks 307, the limiting frame 305 is used for limiting the moving direction of the moving frame 306, so that the moving frame 306 always moves linearly during use, and meanwhile the limiting frame 305 can support the moving frame 306, the surfaces of the two fixed frames 304 are fixedly provided with second motor mounting racks 308, the surfaces of the two second motor mounting racks 308 are fixedly provided with second motors 309, the output ends of the two second motors 309 are fixedly provided with gears 310 and penetrate through the fixed frame 304, and the two gears 310 are engaged with the two racks 307 respectively, during use, the two second motors 309 are started, the two second motors 309 will drive the two gears 310 to rotate at the same time, the two second motors 309 are started to drive the gears 310 to rotate, because the gears 310 are engaged with the racks 307, so the gears 310 will drive the racks 307 and the moving frames 306 to move along the limiting frames 305 towards the direction of the shelves when the gears 310 rotate, and meanwhile the moving frames 306 will drive the cross frames 311, the linear modules 312 and the packaging boxes to move synchronously; The two moving frames 306 are fixedly provided with a cross frame 311, the cross frame 311 is fixedly provided with a linear module 312 inside, one end of the linear module 312 is fixedly provided with a third motor 313, the output end of the third motor 313 is connected with a threaded rod inside the linear module 312 through a shaft coupling, the surface of a sliding table inside the linear module 312 is fixedly provided with a fixed seat 316, a second sliding rail 314 is fixedly provided inside the cross frame 311 close to the linear module 312, two second sliding blocks 315 are slidably sleeved outside the second sliding rail 314, and the two second sliding blocks 315 are fixedly connected with the fixed seat 316, during use, the third motor 313 is started, the third motor 313 will drive the fixed seat 316 and the supporting piece 317 to move through the linear module 312, so as to adjust the horizontal position of the installation box, the surface of the fixed seat 316 is fixedly provided with a supporting piece 317, the lower end of the supporting piece 317 is fixedly provided with a bidirectional module mounting rack 318, the surface of the bidirectional module mounting rack 318 is fixedly provided with a bidirectional module 319, one end of the bidirectional module 319 is fixedly provided with a fourth motor 320, the output end of the fourth motor 320 is connected with a bidirectional screw rod inside the bidirectional module 319 through a shaft coupling, and the surfaces of two sliding tables inside the bidirectional module 319 are respectively fixedly provided with clamping plates 321, during use, the fourth motor 320 is started, the fourth motor 320 will drive the two clamping plates 321 to move towards or away from each other through the bidirectional module 320; The first conveying belt 101 is fixedly provided with a plurality of blocking frames 103 at the upper end, and is fixedly provided with two first cylinder mounting frames 104 at positions corresponding to two second conveying belts 102 on one side, respectively. The surfaces of the two first cylinder mounting frames 104 are fixedly provided with first cylinders 105, respectively. The telescopic ends of the two first cylinders 105 penetrate through the first cylinder mounting frames 104 and are fixedly provided with a push plate 106 together. When the packaging box is moved to a specified position in use, the first cylinder 105 is started, which drives the push plate 106 to move and in turn pushes the packaging box to move, until the packaging box is pushed onto the second conveying belt 102. The two ends of the first conveying belt 101 are fixedly provided with two positioning frames 107 at positions corresponding to the two second conveying belts 102, respectively. The two positioning frames 107 are slidably provided with a blocking plate 108 therebetween. The lower end of the first conveying belt 101 is fixedly provided with two second cylinder mounting frames 109 at positions corresponding to the two blocking plates 108 on one side, respectively. The lower ends of the two second cylinder mounting frames 109 are fixedly provided with second cylinders 110, respectively. The telescopic ends of the two second cylinders 110 penetrate through the second cylinder mounting frames 109 and are fixedly connected with the lower ends of the two blocking plates 108, respectively. The second cylinder 110 is started, which drives the blocking plate 108 to move upward after being started, so as to block the packaging box and prevent the packaging box from moving continuously.

[0018] The implementation principle of the embodiment of the application is as follows: in use, the system is placed beside a shelf, so as to ensure that the two placing modules 3 correspond to the corresponding shelves, respectively, and to ensure that the end of the second conveying belt 102 away from the first conveying belt 101 is aligned with the entrance of the shelf. First, the packaging box is placed on the first conveying belt 101. The first conveying belt 101 is started, which drives the packaging box to move along the conveying direction. When the packaging box moves to a position corresponding to the second conveying belt 102, the second cylinder 110 is started, which drives the blocking plate 108 to slide upward along the positioning frame 107, so as to intercept the packaging box. Then, the two first cylinders 105 corresponding to the two first cylinder mounting frames 104 are started, which drives the push plate 106 to move in the direction of the second conveying belt 102, so as to push the packaging box from the first conveying belt 101 to the corresponding second conveying belt 102. Then, the push plate 106 is reset by the first cylinder 105, and the blocking plate 108 is reset downward by the second cylinder 110. When the packaging box is completely transferred to the second conveying belt 102, the second conveying belt 102 is started, which drives the packaging box to move toward the lifting frame 301, until the packaging box moves to the upper end of the lifting frame 301; After starting the fourth motor 320, the fourth motor 320 drives the two clamping plates 321 to move towards each other through the bidirectional module 319 until the clamping plates 321 are in close contact with the two sides of the packaging box to clamp the packaging box, and then the first motor 209 is started to drive the screw 206 to rotate. When the screw 206 rotates, it will drive the connecting frame 302 and the lifting frame 301 to move upwards. When the height of the lifting frame 301 reaches the preset shelf height, the first motor 209 is stopped to lift the lifting frame 301. Then the two second motors 309 are started to drive the gears 310 to rotate. Because the gears 310 are engaged with the racks 307, when the gears 310 rotate, they will drive the racks 307 and the moving frames 306 to move along the limiting frames 305 towards the shelf direction. At the same time, the moving frames 306 will drive the cross frames 311, the linear modules 312 and the packaging box to move synchronously. When the packaging box extends into the interior of the shelf, the third motor 313 is started. The third motor 313 will drive the fixed seat 316 and the supporting member 317, the bidirectional module 319 and the packaging box to move horizontally through the linear module 312. When the packaging box moves to the appropriate position, the first motor 209 is started again to make it rotate in the opposite direction, thereby driving the lifting frame 301 to move downwards, so that the packaging box is placed flat on the shelf deck. Then the fourth motor 320 is started to drive the two clamping plates 321 to move in the opposite direction through the bidirectional module 319 until the clamping plates 321 are completely separated from the packaging box, thereby completing the storage of the packaging box.

Claims

1. An automated warehousing system comprising a transport module (1) and two lifting modules (2) and two placing modules (3), characterized in that: The conveying module (1) comprises a first conveying belt (101) and two second conveying belts (102), both of which are on the same side of the first conveying belt (101), both of the lifting modules (2) comprise a first support frame (201) and a second support frame (202), and both of the placing modules (3) comprise a lifting frame (301), both of which are located at one end of the second conveying belt (102) away from the first conveying belt (101) and adjacent to the second conveying belt (102). The first support frame (201) and the second support frame (202) are both fixedly provided with a first sliding rail (204) on the surface, both of the first sliding rails (204) are both slidably sleeved with two first sliding blocks (205), the lifting frame (301) is fixedly connected between the two first sliding blocks (205) on both sides, the lifting frame (301) is fixedly provided with a connecting frame (302) on one side, the first support frame (201) is fixedly provided with a screw rod mounting seat (207) at the lower end, the screw rod mounting seat (207) is rotatably provided with a screw rod (206) inside, the screw rod (206) is threadedly connected between the connecting frame (302), the first support frame (201) is fixedly provided with a first motor mounting frame (208) at the upper end, the first motor mounting frame (208) is fixedly provided with a first motor (209) at the upper end, and the output end of the first motor (209) is fixedly connected with the upper end of the screw rod (206) through a shaft coupling.

2. The automated warehousing system of claim 1, wherein: Both sides of the lifting frame (301) are fixedly provided with an extension plate (303), both of the extension plates (303) are fixedly provided with a fixed frame (304) at the upper end, both of the fixed frames (304) are fixedly provided with a limiting frame (305) at the upper end, both of the limiting frames (305) are slidably provided with a moving frame (306) inside, and both of the moving frames (306) are fixedly provided with a rack (307) at the lower end.

3. The automated warehousing system of claim 2, wherein: Both surfaces of the fixed frame (304) are fixedly provided with a second motor mounting frame (308), both surfaces of the second motor mounting frame (308) are fixedly provided with a second motor (309), and the output ends of the two second motors (309) are fixedly provided with a gear (310) penetrating through the fixed frame (304), and both of the gears (310) are respectively engaged with the two racks (307).

4. The automated warehousing system of claim 2, wherein: Two mobile frames (306) are fixedly provided with a cross frame (311) between them, a linear module (312) is fixedly arranged inside the cross frame (311), a third motor (313) is fixedly arranged at one end of the linear module (312), the output end of the third motor (313) is connected with a threaded rod inside the linear module (312) through a shaft coupling, a fixed seat (316) is fixedly arranged on the surface of a sliding table inside the linear module (312), a second sliding rail (314) is fixedly arranged inside the cross frame (311) and close to the linear module (312), two second sliding blocks (315) are slidingly arranged outside the second sliding rail (314), and the two second sliding blocks (315) are fixedly connected with the fixed seat (316).

5. An automated warehousing system according to claim 4, characterized in that: A supporting piece (317) is fixedly arranged on the surface of the fixed seat (316), a bidirectional module mounting frame (318) is fixedly arranged at the lower end of the supporting piece (317), a bidirectional module (319) is fixedly arranged on the surface of the bidirectional module mounting frame (318), a fourth motor (320) is fixedly arranged at one end of the bidirectional module (319), the output end of the fourth motor (320) is connected with a bidirectional screw rod inside the bidirectional module (319) through a shaft coupling, and two sliding tables inside the bidirectional module (319) are respectively fixedly provided with clamping plates (321).

6. The automated warehousing system of claim 1, wherein: A plurality of blocking frames (103) are fixedly arranged at the upper end of the first conveying belt (101), two first cylinder mounting frames (104) are fixedly arranged at positions corresponding to the two second conveying belts (102) on the side of the first conveying belt (101), a first cylinder (105) is fixedly arranged on the surface of each first cylinder mounting frame (104), and the telescopic ends of the two first cylinders (105) are penetratingly arranged through the first cylinder mounting frames (104) and are fixedly provided with a push plate (106).

7. The automated warehousing system of claim 1, wherein: Two positioning frames (107) are fixedly arranged inside the two ends of the first conveying belt (101) and at positions corresponding to the two second conveying belts (102), a baffle (108) is slidingly arranged between the two positioning frames (107), two second cylinder mounting frames (109) are fixedly arranged at positions corresponding to the two baffles (108) at the lower end of the side of the first conveying belt (101), a second cylinder (110) is fixedly arranged at the lower end of each second cylinder mounting frame (109), and the telescopic ends of the two second cylinders (110) are penetratingly arranged through the second cylinder mounting frames (109) and are fixedly connected with the lower ends of the two baffles (108).

8. The automated warehousing system of claim 1, wherein: A plurality of fixed cross beams (203) are fixedly arranged between the first supporting frame (201) and the second supporting frame (202), and the plurality of fixed cross beams (203) are arranged in a linear array.

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