Cargo import and export carrying device for port

Abstract

The invention relates to the technical field of cargo carrying, and discloses a port cargo inlet and outlet carrying device which comprises a moving platform, an extending mechanism is arranged at the top of the moving platform, and the extending mechanism comprises a supporting platform, an inner cavity, a limiting column, an extending platform, a supporting frame, a sliding groove, a two-way screw rod, a first bearing and a screw hole sliding block. The inner cavity is formed in the supporting platform, and the limiting column is fixedly installed in the inner cavity through the positioning block. The working area of the carrying device can be increased through unfolding of the extension platform, the carrying device is suitable for cargoes of more types and sizes, for some large or special-shaped cargoes, the unfolded extension platform can provide more stable supporting and larger operation space, equipment such as a crane can be conveniently and accurately hoisted and placed, and the carrying device is convenient to use. And when the extension platform is not used, the extension platform can be stored, and the overall occupied space is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of cargo handling, in particular to a handling device for importing and exporting cargo at a port. Background Art

[0002] The port cargo import and export handling device is a kind of equipment specially used in port areas to achieve efficient and safe handling of cargo in the import and export links.

[0003] According to a Chinese patent with the announcement number "CN210914509U", a port cargo import and export handling device disclosed solves the problem that manual back and forth handling of cargo requires a lot of labor and has low handling efficiency. The device includes a bottom frame and a winch. The upper end of the bottom frame is fixed with two slide rails parallel to each other and inclined to one end through a support column. A support plate is slidably installed on the slide rail, and a guide wheel is installed in the middle of the end with a high inclination of the slide rail. A supporting part is fixed at one end of the bottom frame close to the guide wheel, and a moving part is arranged at the four corners of the bottom frame, which is convenient for short-distance transportation of cargo, reduces the labor of workers, and greatly improves transportation efficiency. When the above-mentioned device is in use, no extension mechanism is arranged, and there is a fixed working area, which is difficult to adapt to the handling needs of cargo of different sizes, especially large or special shapes. At the same time, the port space is limited. If the handling device occupies too much space when not in use, it will affect the overall layout and operation efficiency of the port. Therefore, a port cargo import and export handling device is proposed to solve the above-mentioned problems. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a handling device for the import and export of goods at a port in view of the deficiencies in the above-mentioned prior art.

[0005] To solve the above technical problems, the technical solution adopted by the present invention is: a handling device for importing and exporting goods in a port, comprising a mobile platform, an extension mechanism is arranged on the top of the mobile platform, the extension mechanism comprises a supporting platform, an inner cavity, a limiting column, an extension platform, a supporting frame, a slide groove, a bidirectional screw, a bearing 1, and a screw hole slider, the inner cavity is opened in the supporting platform, the limiting column is fixedly installed in the inner cavity through a positioning block, the extension platform is slidably sleeved on the outer wall of the limiting column and is slidably connected to the inner cavity, the supporting frame is fixedly installed at the bottom of the supporting platform and is connected to the inner cavity, the slide groove is opened in the supporting frame, the bearing 1 is fixedly installed on the inner wall of the slide groove, the bidirectional screw is rotatably connected to the inner wall of the slide groove through a bearing 1, the screw hole slider is threadedly sleeved on the outer wall of the bidirectional screw and is slidably connected to the inner wall of the slide groove, and the screw hole slider is fixedly connected to the extension platform.

[0006] Preferably, the extension mechanism further comprises a first bevel gear, a second bevel gear, a first support plate, and a motor 1, wherein the first bevel gear is fixedly sleeved on the outer wall of the bidirectional screw, the second bevel gear is meshedly connected with the first bevel gear, the first support plate is fixedly mounted on the support frame, the motor 1 is fixedly mounted on the first support plate, and one end of the output shaft of the motor 1 is fixedly sleeved on the inner wall of the second bevel gear. According to this preference, the second bevel gear rotates, thereby driving the first bevel gear meshedly connected with the outer wall of the second bevel gear to rotate.

[0007] Preferably, a translation mechanism is provided at the bottom of the mobile platform, and the translation mechanism includes a support slide, a translation groove, a groove, a threaded rod, a second bearing, a translation block, and a pulley. The translation groove is provided at the top of the support slide, the groove is provided at the bottom of the inner wall of the translation groove, the second bearing is fixedly installed on the inner wall of the translation groove, one end of the threaded rod is rotatably connected to the inner wall of the translation groove through the second bearing, the translation block is threadedly sleeved on the outer wall of the threaded rod and slidably connected to the inner wall of the translation groove, the translation block is fixedly connected to the mobile platform, and the pulley is fixedly installed at the bottom of the translation block and provided on the inner wall of the groove. According to this preference, the translation block slides on the inner wall of the translation groove, so as to drive the pulley to move on the inner wall of the groove.

[0008] Preferably, the translation mechanism further comprises a second support plate and a second motor, wherein the second support plate is fixedly mounted on the support slide, the second motor is fixedly mounted on the second support plate, and the output shaft of the second motor is fixedly connected to a threaded rod. According to this preference, by starting the second motor, the output shaft of the second motor drives the first synchronous pulley fixedly mounted on the outer wall to rotate.

[0009] Preferably, the translation mechanism further includes a first synchronous belt pulley and a second synchronous belt pulley, wherein the first synchronous belt pulley is fixedly sleeved on the outer wall of the second output shaft of the motor, and the second synchronous belt pulley is fixedly sleeved on the outer wall of the other end of the threaded rod and is connected to the first synchronous belt pulley through a synchronous belt. According to this preference, the first synchronous belt pulley rotates, and the second synchronous belt pulley is driven to rotate through the transmission connection of the synchronous belt.

[0010] Preferably, a rotating mechanism is also provided on the top of the mobile platform, and the rotating mechanism includes a rotating limit groove, a rotating slider, a rotating table, a worm gear ring, a third support plate, a bearing three, and a worm. The rotating limit groove is provided on the top of the mobile platform, the rotating slider is rotatably connected to the inner wall of the rotating limit groove, the rotating table is fixedly mounted on the rotating slider, the worm gear ring is fixedly sleeved on the outer wall of the rotating table, the third support plate is fixedly mounted on the top of the mobile platform, the bearing three is fixedly mounted on the third support plate, and one end of the worm is rotatably connected to the third support plate through the bearing three. According to this preference, the worm gear ring rotates, so that the rotating table fixedly sleeved on the inner wall of the worm gear ring rotates.

[0011] Preferably, the rotating mechanism further comprises a motor 3, the motor 3 is fixedly mounted on the top of the mobile platform, and the output end of the motor 3 is fixedly connected to the other end of the worm. According to this preference, by starting the motor 3, the output end of the motor 3 drives the fixedly connected worm to rotate.

[0012] Preferably, the mobile platform is also provided with a lifting mechanism, which includes a cylindrical groove, a connecting groove, a threaded barrel, a bearing four, a threaded column, a bearing five, and a limit hydraulic telescopic rod. The cylindrical groove is provided at the top of the mobile platform and passes through the rotating platform upwards. The connecting groove is provided at one side of the cylindrical groove. The bearing four is fixedly mounted at the bottom of the inner wall of the cylindrical groove. The threaded barrel is rotatably connected to the inner wall of the cylindrical groove through the bearing four. The bottom end of the threaded column is threadedly connected to the inner wall of the threaded barrel. The bearing five is fixedly sleeved on the top of the threaded column. The threaded column is connected to the support frame through the bearing five. The limit hydraulic telescopic rod is fixedly mounted on the top of the rotating platform. The inner rod of the limit hydraulic telescopic rod is fixedly connected to the bottom of the support platform. According to this preference, the threaded column threadedly connected to the inner wall of the threaded barrel pushes the support frame and the support platform upward to move upward.

[0013] Preferably, the lifting mechanism further comprises a third synchronous pulley, a sixth bearing, a rotating shaft, and a fourth synchronous pulley, wherein the third synchronous pulley is fixedly sleeved on the outer wall of the threaded barrel, the sixth bearing is fixedly installed on the bottom of the inner wall of the connecting groove, the bottom end of the rotating shaft is rotatably connected to the inner wall of the connecting groove through the sixth bearing, and the fourth synchronous pulley is fixedly sleeved on the outer wall of the rotating shaft. According to this preference, the fourth synchronous pulley rotates, and the third synchronous pulley is driven to rotate under the transmission connection of the synchronous belt.

[0014] Preferably, the lifting mechanism further comprises a motor 4, the motor 4 is fixedly mounted on one side of the top of the support platform, and the output end of the motor 4 is fixedly connected to the top of the rotating shaft. According to this preference, by starting the motor 4, the output end of the motor 4 drives the fixedly connected rotating shaft to rotate.

[0015] The present invention adopts the above technical solution to bring the following beneficial effects: 1. A handling device for importing and exporting cargoes at a port, through the cooperation of a supporting platform, an inner cavity, a limiting column, an extension platform, a supporting frame, a slide groove, a bidirectional screw, a bearing 1, a screw hole slider, a first bevel gear, a second bevel gear, a first support plate, and a motor 1, the deployment of the extension platform can increase the working area of ​​the handling device and adapt to cargoes of more types and sizes. For some large or special-shaped cargoes, the deployed extension platform can provide more stable support and a larger operating space, which is convenient for cranes and other equipment to accurately lift and place the cargoes, thereby improving the safety and reliability of handling. When the extension platform is not in use, it can be stored to reduce the overall occupied space.

[0016] 2. This kind of handling device for import and export of cargo in a port moves a mobile platform fixedly connected to the top of the translation block and all components on the mobile platform under the cooperation of a supporting slide, a translation groove, a groove, a threaded rod, a second bearing, a translation block, a pulley, a second support plate, a second motor, a first synchronous pulley, and a second synchronous pulley. The automated mobile platform reduces the workload of manual handling and the labor intensity of workers, and the position of the mobile platform can be adjusted according to different handling requirements.

[0017] 3. This kind of port cargo import and export handling device, through the cooperation of rotating limit groove, rotating slider, rotating table, worm gear ring, third support plate, bearing three, worm and motor three, the rotating table drives all the components on itself to rotate, so that the angle of the support platform can be adjusted according to actual conditions, so that the cargo can better adapt to different loading and unloading requirements and site conditions during the handling process, and at the same time, the cargo can be quickly positioned and adjusted, reducing the time and workload of manual adjustment of the cargo position.

[0018] 4. This kind of handling device for import and export of cargo in the port can adjust the height of the support frame and the support platform according to actual conditions through the cooperation of the cylindrical groove, the connecting groove, the threaded cylinder, the bearing four, the threaded column, the bearing five, the limiting hydraulic telescopic rod, the third synchronous pulley, the bearing six, the rotating shaft, the fourth synchronous pulley, and the motor four. The height of the support platform can be flexibly adjusted according to the height requirements of different transport vehicles, which enables the handling device to better connect with various logistics links and improve the efficiency and smoothness of cargo transfer. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a schematic diagram of the structure of the rotating mechanism of the present invention; Figure 3 It is a schematic diagram of the cross-sectional structure of the back view of the present invention; Figure 4 It is a schematic diagram of a top-view cross-sectional structure of the present invention; Figure 5 It is a schematic diagram of the lifting mechanism structure of the present invention; Figure 6 It is a partial structural schematic diagram of the extension mechanism of the present invention; Figure 7 It is a schematic diagram of the side cross-sectional structure of the support platform of the present invention.

[0020] In the figure: 1, moving platform; 21, extension mechanism; 211, support platform; 212, inner cavity; 213, limit column; 214, extension platform; 215, support frame; 216, slide groove; 217, bidirectional screw; 218, bearing 1; 219, screw hole slider; 220, first bevel gear; 221, second bevel gear; 222, first support plate; 223, motor 1; 31, translation mechanism; 311, support slide; 312, translation groove; 313, groove; 314, threaded rod; 315, bearing 2; 316, translation block; 317, pulley; 318, second support plate; 319, motor 2; 320, first synchronous pulley; 321, second synchronous pulley; 41, rotating mechanism; 411, rotating limit groove; 412, rotating slider; 413, rotating table; 414, worm gear ring; 415, third support plate; 416, bearing three; 417, worm; 418, motor three; 51, lifting mechanism; 511, cylindrical groove; 512, connecting groove; 513, threaded cylinder; 514, bearing four; 515, threaded column; 516, bearing five; 517, limit hydraulic telescopic rod; 518, third synchronous pulley; 519, bearing six; 520, rotating shaft; 521, fourth synchronous pulley; 522, motor four. DETAILED DESCRIPTION

[0021] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0022] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, 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 referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "setting" should be understood in a broad sense, for example, they can be fixedly connected or set, or detachably connected or set, or integrally connected or set. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "several" is two or more, unless otherwise clearly and specifically defined.

[0025] See also Figure 1-7 One embodiment of the present invention is: a handling device for importing and exporting cargo at a port, comprising a mobile platform 1, an extension mechanism 21 is arranged on the top of the mobile platform 1, the extension mechanism 21 comprises a support platform 211, an inner cavity 212, a limiting column 213, an extension platform 214, a support frame 215, a slide 216, a bidirectional screw 217, a bearing 218, and a screw hole slider 219, the inner cavity 212 is opened inside the support platform 211, the limiting column 213 is fixedly installed inside the inner cavity 212 through a positioning block, the extension platform 214 is slidably sleeved on the outer wall of the limiting column 213 and slidably connected to the inner cavity 212, the support frame 215 is fixedly installed at the bottom of the support platform 211 and is connected to the inner cavity 212, the slide 216 is opened inside the support frame 215, the bearing 218 is fixedly installed inside the inner cavity 212, and the extension platform 214 is slidably sleeved on the outer wall of the limiting column 213 and is slidably connected to the inner cavity 212. 18 is fixedly mounted on the inner wall of the slide groove 216, the bidirectional screw 217 is rotatably connected to the inner wall of the slide groove 216 through a bearing 1 218, the screw hole slider 219 is threadedly sleeved on the outer wall of the bidirectional screw 217 and slidably connected to the inner wall of the slide groove 216, the screw hole slider 219 is fixedly connected to the extension platform 214, the extension mechanism 21 also includes a first bevel gear 220, a second bevel gear 221, a first support plate 222, and a motor 1 223, the first bevel gear 220 is fixedly sleeved on the outer wall of the bidirectional screw 217, the second bevel gear 221 is meshed and connected with the first bevel gear 220, the first support plate 222 is fixedly mounted on the support frame 215, the motor 1 223 is fixedly mounted on the first support plate 222, and one end of the output shaft of the motor 1 223 is fixedly sleeved on the inner wall of the second bevel gear 221; Working principle: by starting the motor 223, the output shaft of the motor 223 drives the second bevel gear 221 fixedly mounted on the outer wall to rotate, thereby driving the first bevel gear 220 meshingly connected to the outer wall of the second bevel gear 221 to rotate, and then driving the bidirectional screw 217 fixedly mounted on the inner wall of the first bevel gear 220 to rotate, so that the screw hole slider 219 threadedly mounted on the outer wall of the bidirectional screw 217 slides on the inner wall of the slide groove 216, so that the extension platform 214 slidingly mounted on the outer wall of the limit column 213 slides on the inner wall of the inner cavity 212, so that the extension platform 214 can be unfolded. The unfolding of the extension platform 214 can increase the working area of ​​the handling device and adapt to more types and sizes of goods. For some large or special-shaped goods, the unfolded extension platform 214 can provide more stable support and larger operating space, which is convenient for equipment such as cranes to accurately lift and place, improves the safety and reliability of handling, and can be stored when the extension platform 214 is not in use to reduce the overall occupied space.

[0026] See also Figure 1-7 On the basis of the above embodiment, in another embodiment of the present invention, a translation mechanism 31 is arranged at the bottom of the mobile platform 1, and the translation mechanism 31 includes a supporting slide 311, a translation groove 312, a groove 313, a threaded rod 314, a second bearing 315, a translation block 316, and a pulley 317. The translation groove 312 is arranged at the top of the supporting slide 311, the groove 313 is arranged at the bottom of the inner wall of the translation groove 312, the second bearing 315 is fixedly installed on the inner wall of the translation groove 312, one end of the threaded rod 314 is rotatably connected to the inner wall of the translation groove 312 through the second bearing 315, the translation block 316 is threadedly sleeved on the outer wall of the threaded rod 314 and slidably connected to the inner wall of the translation groove 312, and the translation block 316 is connected to the mobile platform The platform 1 is fixedly connected, the pulley 317 is fixedly mounted on the bottom of the translation block 316 and is arranged on the inner wall of the groove 313, the translation mechanism 31 also includes a second support plate 318 and a second motor 319, the second support plate 318 is fixedly mounted on the support slide 311, the second motor 319 is fixedly mounted on the second support plate 318, the output shaft of the second motor 319 is fixedly connected to a threaded rod 314, the translation mechanism 31 also includes a first synchronous pulley 320 and a second synchronous pulley 321, the first synchronous pulley 320 is fixedly sleeved on the outer wall of the output shaft of the second motor 319, the second synchronous pulley 321 is fixedly sleeved on the outer wall of the other end of the threaded rod 314 and is connected to the first synchronous pulley 320 through a synchronous belt; Working principle: by starting the second motor 319, the output shaft of the second motor 319 drives the first synchronous pulley 320 fixedly mounted on the outer wall to rotate, and through the transmission connection of the synchronous belt, the second synchronous pulley 321 is driven to rotate, so that the three threaded rods 314 can rotate synchronously, and the translation block 316 threadedly mounted on the outer wall of the three threaded rods 314 slides on the inner wall of the translation groove 312, so that the pulley 317 is driven to move on the inner wall of the groove 313, and then the mobile platform 1 fixedly connected to the top of the translation block 316 and all components on the mobile platform 1 can be driven to move. The automated mobile platform 1 reduces the workload of manual handling and the labor intensity of workers, and the position of the mobile platform 1 can be adjusted according to different handling requirements.

[0027] See also Figure 1-7 On the basis of the above embodiment, in another embodiment of the present invention, a rotating mechanism 41 is further provided on the top of the mobile platform 1, and the rotating mechanism 41 includes a rotating limit groove 411, a rotating slider 412, a rotating table 413, a worm gear ring 414, a third support plate 415, a bearing three 416, and a worm 417. The rotating limit groove 411 is opened on the top of the mobile platform 1, the rotating slider 412 is rotatably connected to the inner wall of the rotating limit groove 411, the rotating table 413 is fixedly mounted on the rotating slider 412, the worm gear ring 414 is fixedly sleeved on the outer wall of the rotating table 413, the third support plate 415 is fixedly mounted on the top of the mobile platform 1, the bearing three 416 is fixedly mounted on the third support plate 415, and one end of the worm 417 is rotatably connected to the third support plate 415 through the bearing three 416. The rotating mechanism 41 also includes a motor three 418, which is fixedly mounted on the top of the mobile platform 1, and the output end of the motor three 418 is fixedly connected to the other end of the worm 417; Working principle: by starting motor three 418, the output end of motor three 418 drives the fixedly connected worm 417 to rotate, thereby driving the worm ring 414 meshing with the outer wall of the worm 417 to rotate, so that the rotating table 413 fixedly sleeved on the inner wall of the worm ring 414 rotates, and the rotating slider 412 rotates on the inner wall of the rotating limit groove 411, thereby ensuring the stability of the rotation of the rotating table 413, and the rotating table 413 drives all the components on itself to rotate, so that the angle of the support platform 211 can be adjusted according to the actual situation, so that the goods can better adapt to different loading and unloading requirements and site conditions during the transportation process, and at the same time, the goods can be quickly positioned and adjusted, reducing the time and workload of manual adjustment of the position of the goods.

[0028] See also Figure 1-7On the basis of the above embodiment, in another embodiment of the present invention, a lifting mechanism 51 is further provided on the mobile platform 1, and the lifting mechanism 51 includes a cylindrical groove 511, a connecting groove 512, a threaded cylinder 513, a bearing four 514, a threaded column 515, a bearing five 516, and a limited hydraulic telescopic rod 517. The cylindrical groove 511 is opened at the top of the mobile platform 1 and penetrates the rotating table 413 upward. The connecting groove 512 is opened on one side of the cylindrical groove 511. The bearing four 514 is fixedly installed at the bottom of the inner wall of the cylindrical groove 511. The threaded cylinder 513 is rotatably connected to the inner wall of the cylindrical groove 511 through the bearing four 514. The bottom end of the threaded column 515 is threadedly connected to the inner wall of the threaded cylinder 513. The bearing five 516 is fixedly sleeved on the top of the threaded column 515. The threaded column 515 is connected to the support frame through the bearing five 516. 215 is connected, the limiting hydraulic telescopic rod 517 is fixedly installed on the top of the rotating table 413, the inner rod of the limiting hydraulic telescopic rod 517 is fixedly connected to the bottom of the supporting platform 211, the lifting mechanism 51 also includes a third synchronous pulley 518, a sixth bearing 519, a rotating shaft 520, and a fourth synchronous pulley 521. The third synchronous pulley 518 is fixedly sleeved on the outer wall of the threaded cylinder 513, the sixth bearing 519 is fixedly installed on the bottom of the inner wall of the connecting groove 512, the bottom end of the rotating shaft 520 is rotatably connected to the inner wall of the connecting groove 512 through the sixth bearing 519, the fourth synchronous pulley 521 is fixedly sleeved on the outer wall of the rotating shaft 520, and the lifting mechanism 51 also includes a fourth motor 522. The fourth motor 522 is fixedly installed on one side of the top of the supporting platform 211, and the output end of the fourth motor 522 is fixedly connected to the top of the rotating shaft 520.

[0029] Working principle: by starting motor 4 522, the output end of motor 4 522 drives the fixedly connected rotating shaft 520 to rotate, thereby driving the fourth synchronous pulley 521 fixedly mounted on the outer wall of the rotating shaft 520 to rotate, and through the transmission connection of the synchronous belt, the third synchronous pulley 518 is driven to rotate, and then the threaded cylinder 513 fixedly mounted on the inner wall of the third synchronous pulley 518 is driven to rotate, and under the limiting action and cooperation of the limiting hydraulic telescopic rod 517, the threaded column 515 threadedly connected to the inner wall of the threaded cylinder 513 pushes the support frame 215 and the support platform 211 upward to move upward, so that the height of the support frame 215 and the support platform 211 can be adjusted according to actual conditions, and the height of the support platform 211 can be flexibly adjusted according to the height requirements of different transport vehicles, which enables the handling device to better connect with various logistics links and improve the efficiency and smoothness of cargo transportation.

[0030] It is worth noting that, in order to facilitate control, motor one 223, motor two 319, motor three 418, and motor four 522 in the above embodiments are all provided with control switches, and the control switches can control motor one 223, motor two 319, motor three 418, and motor four 522 to work. The above are all existing technologies and are not the main innovation points, and will not be described in detail here.

[0031] The present invention provides a handling device for the import and export of goods in ports. There are many methods and ways to implement the technical solution. The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention. All components not specified in this embodiment can be implemented by existing technologies.

Claims

1. A port cargo import and export handling device, comprising a mobile platform (1), characterized in that: An extension mechanism (21) is arranged on the top of the mobile platform (1), and the extension mechanism (21) comprises a support platform (211), an inner cavity (212), a limiting column (213), an extension platform (214), a support frame (215), a slide groove (216), a bidirectional screw (217), a bearing 1 (218), and a screw hole slider (219). The inner cavity (212) is opened inside the support platform (211), the limiting column (213) is fixedly installed inside the inner cavity (212) by means of a positioning block, and the extension platform (214) is slidably sleeved on the outer wall of the limiting column (213) and slidably connected to the extension platform (214). Inside the inner cavity (212), the support frame (215) is fixedly mounted on the bottom of the support platform (211) and is connected to the inner cavity (212); the slide groove (216) is opened inside the support frame (215); the bearing 1 (218) is fixedly mounted on the inner wall of the slide groove (216); the bidirectional screw rod (217) is rotatably connected to the inner wall of the slide groove (216) through the bearing 1 (218); the screw hole slider (219) is threadedly sleeved on the outer wall of the bidirectional screw rod (217) and slidably connected to the inner wall of the slide groove (216); and the screw hole slider (219) is fixedly connected to the extension platform (214).

2. A port cargo import and export handling device according to claim 1, characterized in that: The extension mechanism (21) further comprises a first bevel gear (220), a second bevel gear (221), a first support plate (222), and a motor 1 (223); the first bevel gear (220) is fixedly sleeved on the outer wall of the bidirectional screw (217); the second bevel gear (221) is meshingly connected with the first bevel gear (220); the first support plate (222) is fixedly mounted on the support frame (215); the motor 1 (223) is fixedly mounted on the first support plate (222); and one end of the output shaft of the motor 1 (223) is fixedly sleeved on the inner wall of the second bevel gear (221).

3. A port cargo import and export handling device according to claim 1, characterized in that: A translation mechanism (31) is provided at the bottom of the mobile platform (1), and the translation mechanism (31) comprises a support slide (311), a translation groove (312), a groove (313), a threaded rod (314), a second bearing (315), a translation block (316), and a pulley (317). The translation groove (312) is provided at the top of the support slide (311), the groove (313) is provided at the bottom of the inner wall of the translation groove (312), and the second bearing (315) The translation block (316) is fixedly mounted on the inner wall of the translation groove (312); one end of the threaded rod (314) is rotatably connected to the inner wall of the translation groove (312) via a second bearing (315); the translation block (316) is threadedly sleeved on the outer wall of the threaded rod (314) and slidably connected to the inner wall of the translation groove (312); the translation block (316) is fixedly connected to the mobile platform (1); and the pulley (317) is fixedly mounted on the bottom of the translation block (316) and arranged on the inner wall of the groove (313).

4. A port cargo import and export handling device according to claim 3, characterized in that: The translation mechanism (31) further comprises a second support plate (318) and a second motor (319); the second support plate (318) is fixedly mounted on the support slide (311); the second motor (319) is fixedly mounted on the second support plate (318); and the output shaft of the second motor (319) is fixedly connected to a threaded rod (314).

5. The port cargo import and export handling device according to claim 3, characterized in that: The translation mechanism (31) further comprises a first synchronous belt pulley (320) and a second synchronous belt pulley (321), wherein the first synchronous belt pulley (320) is fixedly sleeved on the outer wall of the output shaft of the second motor (319), and the second synchronous belt pulley (321) is fixedly sleeved on the outer wall of the other end of the threaded rod (314) and is transmission-connected to the first synchronous belt pulley (320) via a synchronous belt.

6. A port cargo import and export handling device according to claim 1, characterized in that: A rotating mechanism (41) is also provided on the top of the mobile platform (1). The rotating mechanism (41) comprises a rotating limit groove (411), a rotating slider (412), a rotating platform (413), a worm wheel ring (414), a third support plate (415), a third bearing (416), and a worm (417). The rotating limit groove (411) is provided on the top of the mobile platform (1). The rotating slider (412) is rotatably connected to the inner wall of the rotating limit groove (411). The rotating platform (413) is fixedly mounted on the rotating slider (412). The worm wheel ring (414) is fixedly sleeved on the outer wall of the rotating platform (413). The third support plate (415) is fixedly mounted on the top of the mobile platform (1). The third bearing (416) is fixedly mounted on the third support plate (415). One end of the worm (417) is rotatably connected to the third support plate (415) via the third bearing (416).

7. A port cargo import and export handling device according to claim 6, characterized in that: The rotating mechanism (41) further comprises a motor three (418), wherein the motor three (418) is fixedly mounted on the top of the mobile platform (1), and an output end of the motor three (418) is fixedly connected to the other end of the worm (417).

8. The port cargo import and export handling device according to claim 1, characterized in that: The mobile platform (1) is also provided with a lifting mechanism (51), the lifting mechanism (51) comprising a cylindrical groove (511), a connecting groove (512), a threaded cylinder (513), a fourth bearing (514), a threaded column (515), a fifth bearing (516), and a limit hydraulic telescopic rod (517); the cylindrical groove (511) is provided at the top of the mobile platform (1) and passes through the rotating platform (413) upward; the connecting groove (512) is provided at one side of the cylindrical groove (511); the fourth bearing (514) is fixedly mounted at the bottom of the inner wall of the cylindrical groove (511) and is The threaded cylinder (513) is rotatably connected to the inner wall of the cylindrical groove (511) via a fourth bearing (514); the bottom end of the threaded column (515) is threadedly connected to the inner wall of the threaded cylinder (513); the fifth bearing (516) is fixedly sleeved on the top of the threaded column (515); the threaded column (515) is connected to the support frame (215) via the fifth bearing (516); the position-limiting hydraulic telescopic rod (517) is fixedly installed on the top of the rotating platform (413); and the inner rod of the position-limiting hydraulic telescopic rod (517) is fixedly connected to the bottom of the support platform (211).

9. A port cargo import and export handling device according to claim 8, characterized in that: The lifting mechanism (51) further comprises a third synchronous pulley (518), a sixth bearing (519), a rotating shaft (520), and a fourth synchronous pulley (521); the third synchronous pulley (518) is fixedly sleeved on the outer wall of the threaded barrel (513); the sixth bearing (519) is fixedly installed on the bottom of the inner wall of the connecting groove (512); the bottom end of the rotating shaft (520) is rotatably connected to the inner wall of the connecting groove (512) via the sixth bearing (519); and the fourth synchronous pulley (521) is fixedly sleeved on the outer wall of the rotating shaft (520).

10. A port cargo import and export handling device according to claim 8, characterized in that: The lifting mechanism (51) further comprises a fourth motor (522), wherein the fourth motor (522) is fixedly mounted on one side of the top of the support platform (211), and an output end of the fourth motor (522) is fixedly connected to the top of the rotating shaft (520).

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