CN214057361U

CN214057361U - Intelligent refrigeration freight vehicle

Info

Publication number: CN214057361U
Application number: CN202022607101.9U
Authority: CN
Inventors: 孟亚
Original assignee: Nanjing Yunlite Iot Technology Co ltd
Current assignee: Nanjing Yunlite Iot Technology Co ltd
Priority date: 2020-11-12
Filing date: 2020-11-12
Publication date: 2021-08-27
Anticipated expiration: 2030-11-12

Abstract

The utility model discloses an intelligence refrigeration freight includes car roof beam (100), frame (200), hutch (300), loading and unloading goods portion (400). The utility model discloses an above-mentioned loading and unloading goods portion (400) can be earlier deposit box (300) jack-up from frame (200), it is rotatory again, for example with deposit box (300) rotatory to perpendicular to car roof beam (100), and the quick process of accomplishing loading, unloading to realize promoting the effect of conveying efficiency, convenient loading, unloading.

Description

Intelligent refrigeration freight vehicle

Technical Field

The utility model relates to a commodity circulation transportation equips the field, especially relates to a cold-stored freight of intelligence.

Background

Cold-chain transportation (Cold-chain transportation) refers to transportation in which the transported goods are kept at a constant temperature throughout the transportation process, regardless of the links of loading, unloading, transportation, changing transportation modes, changing packaging equipment, and the like.

The most common cold chain transportation in China is that a refrigeratable storage box is usually arranged at a hopper of a truck, and if loading and unloading are needed, the storage box is opened to load and unload. Therefore, when large-scale loading and unloading are carried out, the loading and unloading place is blocked, and the transportation efficiency is reduced.

Therefore, there is a need for an intelligent refrigerated freight car that can be loaded and unloaded easily.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a can make things convenient for cold-stored freight of intelligence of loading and unloading. The utility model discloses an intelligent refrigerated freight, which comprises a vehicle beam, wherein a tire is arranged on the vehicle beam through a bearing, and the end part of the vehicle beam is fixed with a vehicle head; the lower end of the frame is fixed with the upper surface of the vehicle beam; the lower end of the storage box is detachably fixed with the frame and is provided with a refrigeration module, and the refrigeration module is connected with a power generation module of a driving module of the vehicle head; a cargo loading/unloading section which is disposed on the vehicle body frame, drives the storage box to move up and down by a screw mechanism, and rotates the storage box when the cargo box is raised to a predetermined height; a position detection module, which is configured on a vehicle beam and is used for detecting the geographic position of the vehicle beam; a database configured with position data of a loading area and a unloading area; and the processor is used for judging whether the position data of the loading area and the unloading area are consistent with the detected geographic position of the vehicle beam or not, if so, the power supply module of the loading and unloading part is opened, and if not, the power supply module of the loading and unloading part is closed.

The utility model discloses an intelligent refrigerated freight, wherein the loading and unloading part comprises a motor, an output shaft, a first gear, a second gear, a first lead screw, a square plate, a first sleeve, a first ejector rod, an ejector rod groove, a square groove, a first nut, a first guide hole and a first guide rod; the trolley beam is fixed with the motor, an output shaft of the motor is coaxially fixed with a first gear, the first gear is meshed with a second gear, the second gear is coaxially fixed with a first lead screw, the bottom of the first lead screw is installed on the upper surface of the trolley beam through a bearing, a square disc is coaxially fixed at the top of the first lead screw, a first sleeve is arranged on the lower side of the square disc, the first sleeve is provided with an unthreaded hole and sleeved outside the first lead screw through the unthreaded hole, a square groove matched with the square disc in shape is formed in the upper surface of the first sleeve, the outer edge of the upper surface of the first sleeve is fixed with the lower end of a first ejector rod, and the position right above the first ejector rod is opposite to an ejector rod groove formed in the lower surface of the storage box; the lower side of the first sleeve is provided with a first nut, the first nut is in threaded connection with the first lead screw, a first guide hole is longitudinally formed in the first nut, a first guide rod is sleeved in the first guide hole, and the lower end of the first guide rod is fixed to the upper surface of the vehicle beam.

The utility model discloses a cold-stored freight of intelligence, wherein the middle part of first guide arm is equipped with the limiting plate at the downside of first nut.

The utility model discloses an intelligent refrigerated freight, wherein first nut disposes locking mechanical system, locking mechanical system include spliced pole, lockhole, lockpin, first guide rail, first spring, first connecting rod, first rope sheave, second stay cord, second rope sheave, second connecting rod, second spring, cardboard, first magnet, second magnet; the top of the connecting column is fixed with the bottom of the storage box, a locking hole is formed in the bottom of the storage box along the radial direction of the storage box, a locking pin is arranged in the locking hole, the locking pin moves along the first guide rail, the first guide rail is fixed with the upper surface of a vehicle beam, a first connecting rod is fixed on one side, away from the connecting column, of the first guide rail, a first rope pulley is installed at the top of the first connecting rod through a bearing, the first connecting rod is fixed with one end of a first spring, the other end of the first spring is fixed with the locking pin, the locking pin is fixed with one end of a second pull rope, the second pull rope bypasses the first rope pulley and is fixed with the second rope pulley, the second rope pulley is coaxially fixed with a first shaft, the first shaft is installed on the side end face of the first nut through a bearing, the first shaft is fixed with one end of the second connecting rod, and the other end of the second connecting rod is fixed with the first magnet, the first magnet can attract the second magnet, the second magnet is fixed to the outer surface of the connecting column, clamping plates are arranged on the upper side and the lower side of the first shaft on the side end face of the first nut, the side surface of the second connecting rod swings to the highest position or the lowest position and can abut against the clamping plates, one side, close to the connecting column, of the first shaft on the side end face of the first nut is fixed to one end of the second spring, and the other end of the second spring is fixed to the middle of the second connecting rod.

The utility model discloses a cold-stored freight of intelligence, wherein the top of spliced pole is fixed with the connecting plate, the top of connecting plate with the bottom of hutch is fixed.

The utility model discloses a cold-stored freight of intelligence, wherein the maximum thrust of second spring should be less than the appeal of first magnet, second magnet.

The utility model discloses a cold-stored freight of intelligence, wherein at least three locking mechanical system follows the circumferencial direction evenly distributed of first nut.

The utility model relates to a cold-stored freight of intelligence and prior art difference lie in, the utility model discloses a cold-stored freight of intelligence can load and unload goods portion through the aforesaid earlier with the hutch jack-up from the frame, again with its rotation, for example with the rotation of hutch to the perpendicular to the car roof beam to make things convenient for the loading, the unloading personnel in car roof beam both sides with first stay cord or jack-up hutch and quick completion loading, the process of unloading in the bottom of hutch, avoid the loading district, the stifled phenomenon in unloading district, thereby realize promoting the effect of conveying efficiency, convenient loading, unloading. In addition, the processor can control whether the power supply module of the loading and unloading part is in a designated area to open and close the power supply module, so that the loading and unloading part is prevented from freely lifting or rotating the storage box due to software problems or hacker attacks in the process, and unnecessary dangers are avoided.

The intelligent refrigerated freight car of the present invention will be further explained with reference to the accompanying drawings.

Drawings

FIG. 1 is a front view of a first state of an intelligent refrigerated freight car;

FIG. 2 is a front view of the intelligent refrigerated freight car in a second state;

FIG. 3 is a front view of the intelligent refrigerated freight car in a third state;

FIG. 4 is a top view of FIG. 1;

FIG. 5 is a top view of FIG. 3;

FIG. 6 is an enlarged view of a portion of FIG. 1;

FIG. 7 is an enlarged view of a portion of FIG. 2;

fig. 8 is a partially enlarged view of fig. 3.

Detailed Description

As shown in fig. 1 to 8, referring to fig. 1, 2, 3, 4, and 5, the present invention provides an intelligent refrigerated freight car, which comprises a car beam 100, wherein a tire 101 is mounted on the car beam through a bearing, the end of the car beam is fixed to a car head 102, the upper surface of the car beam 100 is fixed to the bottom of a third spring 601, the top of the third spring 601 is fixed to a conical block 602, and the tip of the conical block 602 faces to a side away from the car beam 100; a frame 200 having a lower end fixed to an upper surface of the girder 100; the lower end of the storage box 300 is detachably fixed with the frame 200, a refrigeration module is configured on the storage box, the refrigeration module is connected with a power generation module of a driving module of the vehicle head 102, a conical groove 603 matched with the conical block 602 in shape is formed in the bottom of the storage box 300, and the conical block 602 can be configured in the conical groove 603; a cargo loading/unloading unit 400 disposed on the vehicle body frame 100, for driving the storage box 300 to be lifted and lowered by a screw mechanism, and rotating the storage box 300 when the cargo box is lifted to a predetermined height; a position detection module, which is arranged on the vehicle beam 100 and is used for detecting the geographic position of the vehicle beam 100; a database configured with position data of a loading area and a unloading area; and a processor for determining whether or not the position data of the loading area and the unloading area coincide with the detected geographical position of the vehicle body frame 100, and if so, turning on the power module of the loading and unloading unit 400, and if not, turning off the power module of the loading and unloading unit 400.

The utility model discloses an above-mentioned loading and unloading goods portion 400 can be earlier the hutch 300 jack-up from frame 200, it is rotatory again, for example with hutch 300 rotatory to the perpendicular to the roof beam 100 to make things convenient for the loading, the personnel of unloading in 100 both sides of roof beam with first stay cord 111 or jack-up hutch 300 and the quick completion loading, the process of unloading, avoid the jam phenomenon in loading district, unloading district, thereby realize promoting conveying efficiency, make things convenient for the effect of loading, unloading. In addition, the processor may control whether the power module of the loading and unloading part 400 is in a designated area to be turned on and off, thereby preventing the loading and unloading part 400 from freely lifting the storage box 300 or rotating the storage box 300 due to a software problem or a hacker attack on the way, thereby preventing unnecessary danger from occurring.

The storage box 300 may be detachably fixed to the car sill 100 by a locking mechanism 500.

In the present embodiment, by the cooperation of the conical block 602 and the conical recess 603, under the urging of the third spring 601, the storage box 300 can be better aligned with the position of the car beam 100, so as to facilitate the alignment and positioning of the first push rod 408 and the push rod recess 409;

the depth of the conical recess 603 is preferably greater than that of the ejector pin recess 409, so that the conical block 602 and the conical recess 603 are positioned first, and then the first ejector pin 408 and the ejector pin recess 409 are positioned, thereby protecting the service life of the first ejector pin 408.

The generator of the driving module of the vehicle head 102 can directly supply power to the refrigeration module of the storage box 300, so as to maintain a continuous low temperature in the storage box 300.

The detachable fixing manner of the storage box 300 and the frame 200 may be: bolt fixing or snap fixing.

Wherein the vehicle head 102 is provided with a driving part which can drive the tires of the vehicle head to rotate, and the vehicle head 102 can drive the vehicle beam 100 to move.

The frame 200 may be a vertical plate at the end of the hopper, which serves as a stop for supporting the body frame 100 and the storage container 300, thereby increasing the space for installing the cargo handling unit 400. Of course, the combination structure of the frame 200 and the body frame 100 may be replaced by a groove dug in the body frame 100, and the cargo handling portion 400 is disposed in the groove, which can achieve the same support of the storage box 300 and leave a space for the cargo handling portion 400, which is an equivalent deformation.

The utility model discloses a loading and unloading goods portion 400 is when unloading: step 1, disassembling the detachably fixed part between the storage box 300 and the frame 200; step 2, jacking up the storage box 300 to avoid friction between the storage box 300 and the frame 200 when rotating; step 3, rotating the storage box 300 to a specified angle, so that the storage box 300 and the vehicle beam 100 are approximately vertical; step 4, pulling the two sides of the storage box 300 by using the first pulling rope 111, fixing the two ends of the first pulling rope 111 with the pulling ring 112, and pulling the pulling ring 112 upwards by the crane through the pulling hook 113 to finish the disassembly of the storage box 300; or, the jack 114 is used for jacking up the two sides of the storage box 300, so as to realize the disassembly of the storage box 300; and 5, conveying the storage box 300 to a designated place to finish unloading.

Similarly, the loading process of the bin 300 is substantially the reverse of the unloading process.

The processor and the position detection module are fixed to the body frame 100 or the head 102, the power module of the cargo handling section 400 is connected to the processor through a wire or a wireless communication module, and the processor can control whether the power module of the cargo handling section 400 is in a designated area to open or close the power module, so that the cargo handling section 400 is prevented from being raised or rotated freely in the process of software problems or hacker attacks, and unnecessary dangers are avoided.

The user can control the current direction of the power module driving motor 401 according to the actual loading and unloading requirements, and loading and unloading are realized through forward rotation and reverse rotation of the motor 401.

As a further explanation of the present embodiment, referring to fig. 4, 5 and 6, the cargo loading and unloading part 400 includes a motor 401, an output shaft 402, a first gear 403, a second gear 404, a first lead screw 405, a square plate 406, a first sleeve 407, a first push rod 408, a push rod groove 409, a square groove 410, a first nut 411, a first guide hole 412 and a first guide rod 413;

the vehicle beam 100 is fixed with the motor 401, the output shaft 402 of the motor 401 is coaxially fixed with the first gear 403, the first gear 403 is engaged with a second gear 404, the second gear 404 is coaxially fixed with the first lead screw 405, the bottom of the first lead screw 405 is mounted on the upper surface of the car beam 100 through a bearing, a square disc 406 is coaxially fixed on the top of the first lead screw 405, a first sleeve 407 is arranged on the lower side of the square disc 406, the first sleeve 407 is provided with a unthreaded hole, the first sleeve 407 is sleeved outside the first lead screw 405 through the unthreaded hole, the upper surface of the first sleeve 407 is formed with a square groove 410 matching with the shape of the square plate 406, the outer edge of the upper surface of the first sleeve 407 is fixed to the lower end of the first top bar 408, and the top bar groove 409 formed in the lower surface of the storage box 300 is aligned to the position right above the first top bar 408;

a first nut 411 is disposed at a lower side of the first sleeve 407, the first nut 411 is in threaded connection with the first lead screw 405, a first guide hole 412 is formed in the first nut 411 along a longitudinal direction, a first guide rod 413 is sleeved in the first guide hole 412, and a lower end of the first guide rod 413 is fixed to an upper surface of the car beam 100.

The utility model discloses an above-mentioned motor 401, output shaft 402, first gear 403, second gear 404 drive first lead screw 405, square plate 406 can rotate, thereby make first nut 411, first lead screw 405, the lead screw structure that first guide arm 413 constitutes and drive the lift of first nut 411, when first nut 411 position is lower, square plate 406 can't dispose in the square groove 410 of first sleeve 407, therefore, hutch 300 can't rotate along with the rotation of first lead screw 405, and when first nut 411 position is higher, square plate 406 disposes in the square groove 410 of first sleeve 407, thereby make hutch 300 rotate along with the rotation of square plate 406, first lead screw 405.

The preset height refers to a critical point at which the square disk 406 is clamped with the square groove 410 of the first sleeve 407. A height above the predetermined height indicates that the first nut 411 is higher, and a height below the predetermined height indicates that the first nut 411 is lower.

The engagement between the first gear 403 and the second gear 404 not only optimizes the layout of the motor 401, but also increases the torque of the motor 401, thereby achieving the effect of a reducer and enabling the storage box 300 to rotate better.

When the first nut 411 is at a lower position, the first plunger 408 of the first sleeve 407 cannot be disposed in the plunger groove 409, and of course, the first plunger 408 of the first sleeve 407 may also be disposed in the plunger groove 409.

Wherein, when the first nut 411 is at a higher position, the first top bar 408 of the first sleeve 407 is always disposed in the top bar groove 409.

The unthreaded hole of the first sleeve 407 is an unthreaded hole in clearance fit with the first lead screw 405, and can ensure that the first sleeve 407 longitudinally moves along the first lead screw 405.

The power module of the motor 401, that is, the power module of the cargo handling unit 400, is connected to the processor by wire or wirelessly, and the power module is connected to the generator of the driving module of the vehicle head 102.

The first gear 403 and the second gear 404 may be both meshed bevel gears, and of course, the first gear 403 and the second gear 404 may also be straight gears, which is mainly to change the transverse torque of the motor into the longitudinal torque in order to facilitate the arrangement of the motor 401.

As a further explanation of the present embodiment, referring to fig. 4, 5 and 6, the middle of the first guide rod 413 is provided with a limiting plate 414 at the lower side of the first nut 411.

The utility model discloses an above-mentioned limiting plate 414 is in order to avoid its connection inefficacy.

As a further explanation of the present embodiment, referring to fig. 4, 5 and 6, the first nut 411 is configured with a locking mechanism 500, and the locking mechanism 500 includes a connecting column 501, a locking hole 502, a locking pin 503, a first guide rail 504, a first spring 505, a first link 506, a first rope pulley 507, a second rope pulley 508, a second rope pulley 509, a second link 510, a second spring 511, a catch plate 512, a first magnet 513 and a second magnet 514;

the top of the connecting column 501 is fixed to the bottom of the storage box 300, the bottom of the storage box 300 is radially provided with a locking hole 502, a locking pin 503 is arranged in the locking hole 502, the locking pin 503 moves along the first guide rail 504, the first guide rail 504 is fixed to the upper surface of the car beam 100, a first connecting rod 506 is fixed to one side of the first guide rail 504, which is far away from the connecting column 501, a first rope sheave 507 is mounted at the top of the first connecting rod 506 through a bearing, the first connecting rod 506 is fixed to one end of the first spring 505, the other end of the first spring 505 is fixed to the locking pin 503, the locking pin 503 is fixed to one end of a second rope 508, the second rope sheave 507 of the second rope 508 is fixed to the second rope sheave 509 by bypassing the first rope sheave 507, the second rope sheave 509 is coaxially fixed to a first shaft 520, the first shaft 520 is mounted on the side end surface of the first nut 411 through a bearing, the first shaft 520 is fixed to one end of the second link 510, the other end of the second link 510 is fixed to the first magnet 513, the first magnet 513 can attract the second magnet 514, the second magnet 514 is fixed to the outer surface of the connecting column 501, snap plates 512 are arranged on the upper side and the lower side of the first shaft 520 on the side end face of the first nut 411, the side surface of the second link 510 swings to the highest position or the lowest position and can abut against the snap plates 512, one side of the first shaft 520 close to the connecting column 501 on the side end face of the first nut 411 is fixed to one end of the second spring 511, and the other end of the second spring 511 is fixed to the middle of the second link 510.

The utility model discloses a change of the upper and lower position of above-mentioned first nut 411 and whether adjust lockpin 503 and dispose in the lockhole 502 to the fixed of locking connection post 501 and car roof beam 100 to locking hutch 300 and car roof beam 100, so that whole mechanism is convenient for unload according to unblock, jack-up hutch 300, a whole set of action of rotatory hutch 300 when unloading.

In particular, when the cargo is unloaded,

step a, the second connecting rod 510 is located at the highest position, the first magnet 513 and the second magnet 514 are mutually attracted, and the lock pin 503 is arranged in the lock hole; the vehicle beam 100 moves to a loading or unloading area, the unloading button is manually selected, and the processor controls the power module of the motor 401 to supply power to the motor 401 according to the current in the first direction;

step b, the motor 401 rotates to drive the first nut 411 to move upwards, and before the first nut 411 rises to a preset height, the second connecting rod 510 is enabled to swing from the highest position to the lowest position through the attraction of the first magnet 513 and the second magnet 514;

step c, the second rope pulley 509 drives the second rope pulley 509 and the second pull rope 508 to pull the lock pin 503 out of the lock hole 502 along with the rising of the first nut 411 and the swinging of the second connecting rod 510 so as to realize unlocking;

the steps 1, 2, 3, 4, 5 may then be continued to complete the operations of jacking the bin 300, rotating the bin 300, and unloading the bin 300, thereby providing better attachment of the bin 300 to the sill 100 when unloading is not required, and such locking mechanism 500 may provide an integrated release and unloading in a more integral linkage that is more integral to the unloading and loading portion 400, thereby providing more secure attachment and easier unloading when not attached.

Similarly, the loading process is the same as the loading process but the steps are reversed.

Wherein, the number of the locking mechanisms 500 may be: 1. 2, 3, 4, 5, 6, 7, 8, 9 or more.

The lock pin 503 is a dovetail-shaped slider, the first guide rail 504 is a dovetail-shaped guide rail, and the dovetail-shaped lock pin 503 is matched with the first guide rail 504 to disable the lock pin 503 from being connected to the first guide rail 504.

Wherein the second spring 511 tends to maintain the second link 510 in an uppermost static state, or a lowermost static state.

The longitudinal position of the second magnet 514 is preferably a position capable of attracting the first magnet 513 both when the first nut 411 is at the lowest rest position and when the first nut 411 is at the highest rest position.

The first magnet 513 and the second magnet 514 may be permanent magnets or electromagnets.

Wherein the first spring 505 tends to move the lock pin 503 into the lock hole 502.

The locking hole 502 may be a blind hole or a through hole, and the opening shape thereof may be a cylindrical hole, a conical hole, a circular truncated cone-shaped hole, or the like.

As a further explanation of the present embodiment, referring to fig. 4, 5 and 6, a connection plate 515 is fixed to the top of the connection column 501, and the top of the connection plate 515 is fixed to the bottom of the storage box 300.

The utility model discloses an above-mentioned connecting plate 515 can effectively reduce the pressure at spliced pole 501 top, makes to connect more reliably.

As a further explanation of this embodiment, referring to fig. 4, 5 and 6, the maximum pushing force of the second spring 511 should be smaller than the attractive forces of the first magnet 513 and the second magnet 514.

In the present invention, the engaging second link 510 of the engaging plate 512 and the second spring 511 is locked at the lowest position or the highest position, wherein the maximum pushing force of the second spring 511 should be smaller than the attraction force of the first magnet 513 and the second magnet 514, so that the spring can be compressed by the attraction force of the first spring 505 and the second spring 511 to change the swing of the second link 510 to the highest position or the lowest position and maintain the position.

As a further explanation of this embodiment, referring to fig. 4, 5, 6, at least three locking mechanisms 500 are evenly distributed along the circumferential direction of the first nut 411.

The utility model discloses with more firm more quantity and more angle locking mechanical system 500 with the hutch 300 locking on car roof beam 100, make it be difficult to connect inefficacy.

The above-mentioned embodiments are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art without departing from the design spirit of the present invention should fall into the protection scope defined by the claims of the present invention.

Claims

1. The utility model provides an intelligence refrigeration freight which characterized in that: comprises that

The automobile body frame comprises an automobile beam (100), wherein a tire (101) is mounted on the automobile beam through a bearing, the end part of the automobile beam is fixed with an automobile head (102), the upper surface of the automobile beam (100) is fixed with the bottom of a third spring (601), the top of the third spring (601) is fixed with a conical block (602), and the tip part of the conical block (602) faces to one side far away from the automobile beam (100);

a frame (200) having a lower end fixed to an upper surface of the vehicle beam (100);

the lower end of the storage box (300) is detachably fixed with the frame (200), a refrigeration module is configured on the storage box, the refrigeration module is connected with a power generation module of a driving module of the vehicle head (102), a conical groove (603) matched with the conical block (602) in shape is formed in the bottom of the storage box (300), and the conical block (602) can be configured in the conical groove (603);

and a cargo handling section (400) which is disposed on the vehicle body frame (100), which drives the storage box (300) to move up and down by means of a screw mechanism, and which rotates the storage box (300) when the cargo box is raised to a predetermined height.

2. The intelligent refrigerated freight car of claim 1, wherein: the goods loading and unloading part (400) comprises a motor (401), an output shaft (402), a first gear (403), a second gear (404), a first lead screw (405), a square disc (406), a first sleeve (407), a first ejector rod (408), an ejector rod groove (409), a square groove (410), a first nut (411), a first guide hole (412) and a first guide rod (413);

the car beam (100) is fixed with the motor (401), an output shaft (402) of the motor (401) is coaxially fixed with the first gear (403), the first gear (403) is meshed with the second gear (404), the second gear (404) is coaxially fixed with the first lead screw (405), the bottom of the first lead screw (405) is mounted on the upper surface of the car beam (100) through a bearing, a square plate (406) is coaxially fixed at the top of the first lead screw (405), a first sleeve (407) is arranged on the lower side of the square plate (406), an unthreaded hole is formed in the first sleeve (407), the first sleeve (407) is sleeved outside the first lead screw (405) through the unthreaded hole, a square groove (410) matched with the square plate (406) in shape is formed in the upper surface of the first sleeve (407), and the outer edge of the upper surface of the first sleeve (407) is fixed with the lower end of a first ejector rod (408), a top rod groove (409) which is arranged right above the first top rod (408) and is opposite to the lower surface of the storage box (300);

a first nut (411) is arranged on the lower side of the first sleeve (407), the first nut (411) is in threaded connection with the first lead screw (405), a first guide hole (412) is formed in the first nut (411) along the longitudinal direction, a first guide rod (413) is sleeved in the first guide hole (412), and the lower end of the first guide rod (413) is fixed to the upper surface of the car beam (100).

3. The intelligent refrigerated freight car of claim 2, wherein: and a limiting plate (414) is arranged at the lower side of the first nut (411) in the middle of the first guide rod (413).

4. The intelligent refrigerated freight car of claim 3, wherein: the first nut (411) is provided with a locking mechanism (500), and the locking mechanism (500) comprises a connecting column (501), a locking hole (502), a locking pin (503), a first guide rail (504), a first spring (505), a first connecting rod (506), a first rope pulley (507), a second pull rope (508), a second rope pulley (509), a second connecting rod (510), a second spring (511), a clamping plate (512), a first magnet (513) and a second magnet (514);

the top of the connecting column (501) is fixed with the bottom of the storage box (300), the bottom of the storage box (300) is provided with a locking hole (502) along the radial direction, a locking pin (503) is arranged in the locking hole (502), the locking pin (503) moves along a first guide rail (504), the first guide rail (504) is fixed with the upper surface of a vehicle beam (100), one side of the first guide rail (504) far away from the connecting column (501) is fixed with a first connecting rod (506), the top of the first connecting rod (506) is provided with a first rope pulley (507) through a bearing, the first connecting rod (506) is fixed with one end of a first spring (505), the other end of the first spring (505) is fixed with the locking pin (503), the locking pin (503) is fixed with one end of a second rope (508), the second rope pulley (509) which is wound around the first rope pulley (507) is fixed with the second rope pulley (509), the second rope pulley (509) is coaxially fixed with a first shaft (520), the first shaft (520) is mounted on the side end face of the first nut (411) through a bearing, the first shaft (520) is fixed with one end of the second connecting rod (510), the other end of the second connecting rod (510) is fixed with the first magnet (513), the first magnet (513) can attract the second magnet (514), the second magnet (514) is fixed with the outer surface of the connecting column (501), clamping plates (512) are arranged on the upper side and the lower side of the first shaft (520) on the side end face of the first nut (411), the side surface of the second connecting rod (510) swings to the highest position or the lowest position and can be abutted against the clamping plates (512), and one end of the second spring (511) is fixed at the side of the first shaft (520) close to the connecting column (501) on the side end face of the first nut (411), the other end of the second spring (511) is fixed to the middle of the second link (510).

5. The intelligent refrigerated freight car of claim 4, wherein: the top of the connecting column (501) is fixed with a connecting plate (515), and the top of the connecting plate (515) is fixed with the bottom of the storage box (300).

6. The intelligent refrigerated freight car of claim 5, wherein: the maximum pushing force of the second spring (511) is smaller than the attractive force of the first magnet (513) and the second magnet (514).

7. The intelligent refrigerated freight car of claim 6, wherein: at least three locking mechanisms (500) are evenly distributed along the circumferential direction of the first nut (411).