CN218145677U

CN218145677U - Cargo carrying platform and stacker

Info

Publication number: CN218145677U
Application number: CN202222130710.9U
Authority: CN
Inventors: 张金虎; 王猛; 熊金涛
Original assignee: Beijing Jingdong Qianshi Technology Co Ltd
Current assignee: Beijing Jingdong Qianshi Technology Co Ltd
Priority date: 2022-08-12
Filing date: 2022-08-12
Publication date: 2022-12-27
Anticipated expiration: 2032-08-12

Abstract

The embodiment of the utility model provides a relate to storage logistics technical field, and disclose a carry cargo bed and stacker, carry cargo bed including carry cargo frame, rolling slats door unit, the unit of putting out a fire and the control unit. The cargo carrying frame is provided with a chamber and an opening, the chamber is used for accommodating goods, and the opening is communicated with the chamber and used for enabling the goods to enter and exit the chamber; the rolling door unit is arranged on the cargo carrying frame and used for closing or opening the opening; the fire extinguishing unit is arranged on the cargo carrying frame and used for spraying fire extinguishing substances into the cavity; the control unit is in signal connection with the rolling door unit and the fire extinguishing unit and is used for controlling the rolling door unit to close the opening and controlling the fire extinguishing unit to extinguish fire.

Description

Cargo carrying platform and stacker

Technical Field

The embodiment of the utility model provides a relate to storage logistics technical field particularly, relate to a carry cargo bed and stacker.

Background

With the wide application of the automated warehouse logistics system in more and more industries, the requirements of customers on logistics equipment and logistics solutions tend to be diversified and multifunctional, and the transportation of simply stored goods is not the main purpose.

Taking a logistics system applied to new energy industry as an example, cargo carrying platforms in the prior art are all open and can only be used as a carrying and transporting carrier of cargoes, and because of the particularity of batteries, the batteries are very easy to generate high temperature and even burn in a storage stage, so that great potential safety hazards exist.

SUMMERY OF THE UTILITY MODEL

An embodiment of the utility model provides a carry cargo bed and stacker to solve the battery that exists among the correlation technique and easily burn and have the problem of great potential safety hazard in the storage stage.

The utility model discloses carry cargo bed, including the frame that carries cargo, rolling slats door unit, the unit of putting out a fire and the control unit. The cargo frame is provided with a chamber and an opening, the chamber is used for containing goods, and the opening is communicated with the chamber and used for enabling the goods to enter and exit the chamber; the rolling door unit is arranged on the cargo carrying frame and used for closing or opening the opening; the fire extinguishing unit is arranged on the loading frame and used for spraying fire extinguishing substances into the chamber; the control unit is in signal connection with the rolling door unit and the fire extinguishing unit and is used for controlling the rolling door unit to close the opening and controlling the fire extinguishing unit to extinguish fire.

According to some embodiments of the present invention, the cargo bed further comprises:

the pallet fork is arranged in the cavity, is in signal connection with the control unit and is used for forking cargoes; and

and the guide assembly is arranged in the cavity and used for guiding the goods to enter and exit the cavity along the forking direction of the fork.

According to some embodiments of the invention, the guide assembly comprises:

a base fixedly attached to a bottom portion of the cargo frame;

the mounting rack is fixedly connected to the base; and

the guide strip is connected in the mounting bracket, and follows the fork of fork gets the direction and extends.

the first detection unit is arranged on the guide assembly, is in signal connection with the control unit and is used for detecting the position of the goods relative to the goods loading frame and the boundary size of the goods.

the second detection unit is arranged on the goods carrying frame and used for obtaining the position information of the goods carrying platform relative to the upright post;

the control unit is in signal connection with the second detection unit and is used for controlling the lifting limit position of the cargo carrying platform according to the position information.

According to some embodiments of the invention, the second detection unit comprises:

the first trigger switch is used for being triggered by a trigger piece arranged on the upright post to generate a deceleration signal;

the second trigger switch is used for generating a parking signal;

the control unit is in signal connection with the first trigger switch and is used for controlling the cargo carrying platform to decelerate according to the deceleration signal; the control unit is in signal connection with a second trigger switch and is used for controlling the goods carrying platform to stop according to the stop signal.

According to some embodiments of the invention, the roller door unit comprises:

a rolling door assembly comprising a plurality of door strips arranged side by side for closing or opening the opening;

the driving chain comprises a plurality of inner chain plates, a plurality of outer chain plates and a plurality of pin shafts, wherein the inner chain plates are hinged with the outer chain plates through the pin shafts; a plurality of connecting parts are arranged on the inner chain plate and/or the outer chain plate, and one ends of the door strips are respectively connected with the connecting parts; and

and the driving mechanism is arranged on the cargo carrying frame and is in driving connection with the driving chain.

According to some embodiments of the present invention, the inner link plate and/or the outer link plate are integrally provided with a plurality of the connecting portions.

According to some embodiments of the invention, the connecting portion is a plate-like structure, the connecting portion is perpendicular to the inner link plate and the outer link plate.

According to some embodiments of the present invention, the outer link plate is provided with the connecting portion, and the connecting portion extends from the outer link plate toward a direction away from the inner link plate.

According to some embodiments of the invention, the door strip with the connection portion can be dismantled.

According to some embodiments of the present invention, the door strip has a first perforation, the connecting portion has a second perforation, and the second perforation is provided corresponding to a position of the first perforation;

the rolling door unit further comprises a connecting bolt, and the connecting bolt is arranged in the first through hole and the second through hole in a penetrating mode.

According to some embodiments of the present invention, the cargo bed further comprises a third detecting unit for detecting an in-place signal of the rolling door assembly;

the control unit is in signal connection with the third detection unit and is used for controlling the limit position of the rolling door component relative to the cargo carrying frame according to the in-place signal.

According to some embodiments of the present invention, the length of a plurality of one of the door strips is greater than the rest of the door strips, and the length of the rest of the door strips is equal, and the longer end of the door strip is used for triggering the third detecting unit.

the lifting guide unit is arranged on the loading frame and used for guiding the loading frame to lift along a stand column.

According to the utility model discloses an in some embodiments, the lift guide unit includes:

the fixed guide wheel assembly comprises a first mounting seat and a first guide wheel, the first mounting seat is fixedly connected to the loading frame, and the first guide wheel is rotatably connected to the first mounting seat and used for being abutted against the first side face of the upright post;

an adjustable guide wheel assembly including a second mounting base adjustably connected to the cargo frame and a second guide wheel rotatably connected to the second mounting base for abutting against a second side of the upright; and

the floating guide wheel assembly comprises a third mounting seat and a third guide wheel, the third mounting seat is connected to the cargo carrying frame in a floating mode, and the third guide wheel is rotatably connected to the third mounting seat and used for being abutted against the third side face of the upright post; the first side surface, the second side surface and the third side surface are not coplanar with each other.

According to some embodiments of the invention, the first side faces are arranged opposite to the second side faces,

the third side surface is connected to the first side surface and the second side surface and faces the moving direction of the stacker.

According to some embodiments of the invention, the second mount is adjustably connected to the cargo frame in a direction perpendicular to the second side, and/or,

the third mount is floatingly coupled to the cargo frame in a direction perpendicular to the third side surface.

According to some embodiments of the invention, the floating guide wheel assembly further comprises:

a guide member connected to the cargo frame, the third mount being slidably connected to the guide member in a floating direction;

and the elastic piece is connected to the third mounting seat and used for applying elastic force close to the direction of the upright column to the third mounting seat.

a first locking member locked to the guide member; one end of the elastic piece is abutted against the first locking piece, and the other end of the elastic piece is abutted against the third mounting seat.

and the limiting part is connected to the third mounting seat and the cargo frame and is used for limiting the limit position of the third mounting seat moving towards the upright post.

According to some embodiments of the invention, the locating part comprises:

the limiting rod is in threaded connection with the third mounting seat, and when one end of the limiting rod is abutted to the inner wall surface of the cargo carrying frame, the third mounting seat is located at the limit position;

and the second locking piece locks the limiting rod and the third mounting seat.

According to some embodiments of the invention, the side portion of the cargo carrying frame has a window;

the third mounting seat is arranged on the inner wall surface of the loading frame, and at least part of the third guide wheel is exposed on the outer wall surface of the loading frame through the window;

the fixed guide wheel assembly and the adjustable guide wheel assembly are both arranged on the outer wall surface of the side part of the cargo carrying frame.

According to some embodiments of the utility model, carry cargo bed still including preventing the unit of falling, set up in carry cargo frame for with a pile up neatly machine's stand frictional contact.

According to some embodiments of the invention, the fall protection unit comprises:

the fixed clamp assembly is fixedly connected to the cargo carrying frame and arranged on the first side surface of the upright post; the movable clamp assembly is connected to the cargo carrying frame and arranged on the second side surface of the upright post; and

and the driving assembly is used for driving the movable clamp assembly to be in frictional contact with the second side surface when the loading frame falls down, and enabling the movable clamp assembly to push the loading frame to generate torsion until the fixed clamp assembly is in frictional contact with the first side surface.

According to some embodiments of the invention, the second side is opposite to the first side.

According to some embodiments of the invention, the stacker comprises two of the uprights, which are respectively arranged on two opposite sides of the cargo frame;

the cargo carrying platform comprises two groups of fixed clamp assemblies and movable clamp assemblies which are correspondingly arranged, and each group of fixed clamp assemblies and movable clamp assemblies are respectively arranged on the first side surface and the second side surface of the upright post;

along the arrangement direction of the two upright posts, the fixed clamp assemblies of one group are arranged corresponding to the movable clamp assemblies of the other group.

According to some embodiments of the invention, the cargo carrying frame comprises a stop plate having a third aperture for a lifting rope to pass through;

the driving assembly is connected to one end of the lifting rope and can be stopped by a stop plate, so that in a normal state, the loading frame is suspended at one end of the lifting rope through the driving assembly.

According to some embodiments of the invention, the drive assembly comprises:

the lifting rope penetrates through the accommodating groove and the through hole, and one end of the lifting rope exposed out of the pressed part is connected with the pressed part through a limiting part; one end of the compression piece is connected to the movable clamp assembly; and

the elastic piece is arranged in the accommodating groove, one end of the elastic piece abuts against the stop plate, and the other end of the elastic piece abuts against the groove bottom of the accommodating groove and is used for applying elastic force far away from the stop plate to the pressed piece.

According to some embodiments of the present invention, the movable clamp assembly comprises:

a fourth mount fixedly attached to the cargo frame;

the first friction block is movably connected to the fourth mounting seat; and

and the linkage unit is connected with the first friction block and the driving assembly and is used for driving the first friction block to move towards the direction close to the upright post when the driving assembly works until the first friction block is in friction contact with the second side surface.

According to some embodiments of the present invention, the first friction block is slidably connected to the fourth mounting seat along a sliding direction, and the sliding direction is inclined relative to the extending direction of the length of the stand column, so that the linkage unit drives the first friction block to move upwards and close to the stand column.

According to some embodiments of the present invention, the movable jaw assembly further comprises a sliding member, the first friction block and the sliding member are slidably connected along the sliding direction by a sliding structure;

the sliding piece is connected to the fourth mounting seat and used for jointly extruding the first friction block with the upright post when the first friction block is in friction contact with the upright post.

According to some embodiments of the invention, the first friction block has a first sliding surface and the slider has a second sliding surface;

the first sliding surface and the second sliding surface are both parallel to the sliding direction and are in slidable fit, and when the first friction block is in frictional contact with the upright, the second sliding surface presses the first friction block at least in a direction perpendicular to the upright.

According to some embodiments of the invention, the sliding member has a sliding groove, a groove bottom of the sliding groove forming the second sliding surface;

at least part of the first friction block is slidably disposed in the sliding groove.

According to some embodiments of the invention, the sliding structure comprises:

the long hole is arranged on one of the first friction block and the sliding piece and extends along the sliding direction;

the first mounting hole is formed in the other one of the first friction block and the sliding piece; and

and the first pin shaft is arranged in the elongated hole and the first mounting hole in a penetrating manner, and can move along the extending direction of the elongated hole.

According to some embodiments of the utility model, first clutch blocks with under the stand is not frictional contact's the state, first round pin axle with rectangular hole is close to the one end butt of stand.

According to some embodiments of the invention, the sliding structure further comprises:

the second mounting hole is arranged on the other one of the first friction block and the sliding piece and is arranged at an interval with the first mounting hole along the sliding direction;

and the second pin shaft is arranged in the strip hole and the second mounting hole in a penetrating manner and can move along the extending direction of the strip hole.

According to some embodiments of the present invention, the linkage unit comprises:

the swinging piece is hinged to the fourth mounting seat, and one end of the swinging piece is connected to the driving assembly in a floating mode; and

and one end of the jacking piece is connected with the first friction block, and the other end of the jacking piece is abutted against the other end of the swinging piece.

The utility model discloses stacker, including above-mentioned arbitrary one carry cargo bed.

An embodiment of the above utility model has at least the following advantages or beneficial effects:

the utility model discloses cargo bed, including rolling slats door unit, the unit of putting out a fire and with rolling slats door unit, the control unit of unit signal connection of putting out a fire. When the goods in the goods carrying frame are burnt, the control unit can control the rolling door unit to close the opening so as to isolate the air flow between the inside and the outside of the chamber and prevent the fire from further spreading and expanding. Meanwhile, the control unit can also control the fire extinguishing unit to act so as to effectively extinguish the fire of the goods in the cargo carrying frame in time and improve the safety.

Drawings

Fig. 1 is a schematic perspective view of a stacker according to an embodiment of the present invention.

Fig. 2 is a schematic perspective view of a cargo bed according to an embodiment of the present invention, wherein the roller door assembly is hidden at the top of the cargo bed.

Fig. 3 is a schematic perspective view of a cargo bed according to an embodiment of the present invention, wherein the roller door assembly is exposed at the top of the cargo bed.

Fig. 4 shows a perspective view of the roller shutter door unit of fig. 1.

Fig. 5 shows a schematic top view of fig. 4.

Fig. 6 shows a partial enlarged view at X1 in fig. 4.

Fig. 7 shows a schematic view of a portion of the drive chain of fig. 4.

Figure 8 shows a front view of the cargo bed of figure 1.

Fig. 9 shows the assembled mounting and guide strips.

Fig. 10 shows a schematic top view of fig. 8.

Fig. 11 shows a schematic view of the second detection unit.

Figure 12 is a perspective view of the assembled cargo bed and column of figure 1.

Fig. 13 shows a side view of fig. 12.

Figure 14 shows a schematic view of the cargo bed of figure 12 from one perspective.

Figure 15 shows a schematic view of the cargo bed of figure 12 from another perspective.

Fig. 16 shows a partially enlarged view at X2 in fig. 14.

Fig. 17 shows a front view of a fixed guide wheel assembly.

Fig. 18 showsbase:Sub>A cross-sectional view alongbase:Sub>A-base:Sub>A in fig. 17.

Fig. 19 shows a front view of an adjustable guide wheel assembly.

Fig. 20 shows a cross-sectional view along B-B in fig. 19.

Fig. 21 shows a partially enlarged view at X3 in fig. 15.

Fig. 22 shows a front view of the floating guide wheel assembly.

Figure 23 shows a cross-sectional view of C-C of figure 22.

Fig. 24 shows a cross-sectional view D-D of fig. 22.

Fig. 25 shows a partially enlarged view at X4 in fig. 23.

Fig. 26 shows a top view of fig. 12.

FIG. 27 is a perspective view of the stationary and movable jaw assemblies of FIG. 12 shown mounted to a cargo bed.

Figure 28 shows a front view of the stationary jaw assembly of figure 12.

Fig. 29 shows a right side view of fig. 28.

Fig. 30 shows a partially enlarged view at X5 in fig. 27.

Figure 31 is a perspective view of the movable jaw assembly and drive assembly of figure 12 shown installed.

Fig. 32 shows a side view of the schematic of fig. 31.

Fig. 33 shows a cross-sectional view along E-E of fig. 32.

Fig. 34 is a schematic diagram of the protection switch of fig. 27.

Figure 35 shows a partial cross-sectional view of the partial slider of figure 31 cut away.

FIG. 36 is a schematic view of a first friction block.

Fig. 37 shows a schematic view of the slider.

Fig. 38 shows a cross-sectional view along F-F in fig. 32.

Fig. 39 shows a schematic view of a further view of the cargo bed.

Wherein the reference numerals are as follows:

10. cargo carrying frame

101. Chamber

102. Opening(s)

110. Bottom part

120. Side part

130. Cover plate

131. First cover body

132. Second cover body

140. Window opening

150. Stop board

151. Third through hole

20. Lifting guide unit

210. Fixed guide wheel assembly

211. First mounting seat

212. First guide wheel

213. First mandrel

214. First clamping piece

220. Adjustable guide wheel assembly

221. Second mounting seat

222. Second guide wheel

223. Adjusting seat

224. Adjusting part

225. Second mandrel

226. Second clamping piece

230. Floating guide wheel assembly

231. Third mounting seat

2311. First support

2312. Second support

2313. Through hole

232. Third guide wheel

233. Guide piece

234. Elastic piece

235. First locking member

236. Position limiting element

2361. Limiting rod

2362. Second locking piece

237. Third mandrel

238. Third clamping part

30. Rolling door unit

310. Rolling screen door assembly

311. Door strip

3111. First through hole

320. Drive chain

321. Inner chain plate

322. Outer chain plate

323. Pin shaft

324. Connecting part

3241. Second through hole

3242. First stage

3243. Second section

325. Shaft sleeve

330. Connecting bolt

340. Driving mechanism

341. Driving motor

342. Drive shaft

343. Driving chain wheel

344. Driven sprocket

345. Tension sprocket

346. Bearing with seat

40. Anti-falling unit

410. Fixed clamp assembly

411. Fifth mounting seat

412. Second friction block

4121. Second waist-shaped hole

4122. Second body

4123. Second wear part

413. Limiting block

414. Second regulating unit

4141. Second adjusting rod

420. Movable clamp assembly

421. Fourth mounting seat

422. First friction block

4221. First sliding surface

4222. First body

4223. First wear part

423. Linkage unit

424. Sliding member

4241. Second sliding surface

4242. Sliding chute

4243. First waist-shaped hole

425. First adjusting unit

4251. First adjusting rod

430. Drive assembly

431. Swinging member

432. Jacking piece

433. Gap

460. Sliding structure

461. Rectangular hole

462. First mounting hole

463. Pin shaft

464. Second mounting hole

465. Second pin shaft

50. Fire extinguishing unit

510. Compression piece

511. Accommodating tank

512. Through-hole

513. Diameter-variable part

520. Elastic piece

530. Gasket

60. Lifting rope

601. Steel wire rope

602. Pressing head

610. Pallet fork

620. Guide assembly

621. Base seat

622. Mounting rack

623. Guide strip

630. First detecting unit

640. Second detecting unit

641. First trigger switch

642. Second trigger switch

660. Fourth detecting unit

670. Protective switch

680. Reset piece

691. Fifth detecting unit

692. Image acquisition unit

70. Stand column

710. First side surface

720. The second side surface

730. Third side face

80. Position limiting element

900. Cargo carrying platform

910. Base seat

920. Guide rail

D1, first direction

D2, second direction

D3, third direction

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted.

As shown in fig. 1, fig. 1 is a schematic perspective view of a stacker according to an embodiment of the present invention. The utility model discloses stacker of embodiment includes base 910, year cargo bed 900, stand 70 and guide rail 920. The base 910 may be disposed on the ground, and the pillar 70 is disposed on the base 910 in a vertical direction. The number of the upright posts 70 is two, and the two upright posts 70 are arranged at intervals along the moving direction of the stacker. The loading platform 900 can be lifted and lowered along the extending direction of the upright 70. The guide rails 920 are transversely disposed on the base 910, and the column 70 and the cargo bed 900 can reciprocate along the extension direction of the guide rails 920.

It is to be understood that the terms "comprises" and "comprising," and any variations thereof, in the embodiments of the present invention, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or may alternatively include other steps or elements inherent to such process, method, article, or apparatus.

As shown in fig. 2 and 3, fig. 2 is a schematic perspective view of a cargo bed 900 according to an embodiment of the present invention, wherein the rolling shutter assembly 310 is hidden at the top of the cargo bed 900. Fig. 3 is a schematic perspective view of a cargo bed 900 according to an embodiment of the present invention, wherein the rolling door assembly 310 is exposed at the top of the cargo bed 900. The cargo bed 900 according to the embodiment of the present invention includes a cargo frame 10, a rolling door unit 30, a fire extinguishing unit 50, and a control unit (not shown in the drawings).

Cargo frame 10, cargo frame 10 includes a bottom portion 110, two side portions 120, and a cover plate 130. The two side portions 120 are connected to both ends of the bottom portion 110 in the first direction D1, respectively. Along the second direction D2, the cover plate 130 is disposed opposite to the bottom portion 110, and two ends of the cover plate 130 along the first direction D1 are respectively connected to the two side portions 120. The bottom 110, the two sides 120 and the cover 130 enclose a compartment 101 for storing goods.

As an example, the cover plate 130 includes a first cover 131 and a second cover 132, and the first cover 131 and the second cover 132 are arranged side by side along the third direction D3. The first cover 131 covers a part of the top of the cargo bed 900, and the second cover 132 covers another part of the top of the cargo bed 900.

The first direction D1, the second direction D2 and the third direction D3 are perpendicular to each other two by two.

Along the third direction D3, each side of the cargo frame 10 has an opening 102, which opening 102 communicates with the cavity 101 for the cargo to enter and exit the cargo bed 900.

The tambour door unit 30 is provided to the cargo frame 10 for closing or opening the opening 102. The compartment 101 forms an enclosed space when the tambour door unit 30 closes the opening 102 of the cargo frame 10.

As an example, the cargo bed 900 includes two rolling door units 30. Along the third direction D3, the two shutter units 30 are arranged side by side, and the two shutter units 30 are covered by the first cover 131 and the second cover 132, respectively. That is, when the two rolling door units 30 are in the retracted state, the two rolling door units 30 are accommodated at the top of the cargo bed 900 and are covered by the first cover 131 and the second cover 132, respectively (as shown in fig. 2).

During the switching of the two rolling door units 30 from the retracted state to the opened state, the two rolling door units 30 move in opposite directions until the two rolling door units 30 cover the two openings 102 of the cargo frame 10, respectively, and finally a closed space is formed inside the cargo bed 900.

The fire suppression unit 50 is disposed on the cargo frame 10 for spraying a fire suppressing substance into the cavity 101. The number of fire extinguishing units 50 may be two, two fire extinguishing units 50 being arranged on two sides 120 of the cargo frame 10, respectively.

As an example, the fire extinguishing unit 50 may include a fire extinguisher, which may be, but is not limited to, a standard perfluorohexanone automatic fire extinguisher.

The fire extinguisher may comprise an electromagnetic valve and a fire detector tube which is inserted into the cavity 101 of the cargo frame 10. When the temperature inside the loading frame 10 reaches a threshold value, the fire extinguisher may automatically spray a fire extinguishing substance into the cavity 101 to extinguish the fire.

The control unit is in signal connection with the rolling door unit 30 and the fire extinguishing unit 50, and is used for controlling the rolling door unit 30 to close the opening 102 and controlling the fire extinguishing unit 50 to extinguish fire.

It can be understood that the cargo bed 900 according to the embodiment of the present invention includes the rolling door unit 30, the fire extinguishing unit 50 and the control unit in signal connection with the rolling door unit 30 and the fire extinguishing unit 50. When the cargo in the cargo frame 10 is burning, the control unit can control the shutter door unit 30 to close the opening 102 to isolate the air flow between the interior of the compartment 101 and the exterior of the compartment 101 to prevent the fire from spreading further. Meanwhile, the control unit can also control the action of the fire extinguishing unit 50 so as to effectively extinguish the fire of the goods in the cargo carrying frame 10 in time and improve the safety.

As shown in fig. 4 and 5, fig. 4 is a perspective view illustrating the roll door unit 30 of fig. 1. Fig. 5 shows a schematic top view of fig. 4. The rolling door unit 30 of the embodiment of the present invention includes a rolling door assembly 310, a driving chain 320, and a driving mechanism 340. The roller shutter door assembly 310 is connected to a drive chain 320. The driving mechanism 340 is disposed on the cargo frame 10 and is drivingly connected to the driving chain 320.

It should be noted that, as shown in fig. 4, a driving chain 320 is respectively disposed at both ends of the rolling door assembly 310 along the first direction D1. For convenience of description, the following description only refers to the case where one end of the rolling door assembly 310 is connected to one of the driving chains 320, and the other end of the rolling door assembly 310 is connected to the other driving chain 320.

With continued reference to fig. 4 and 5, the rolling door assembly 310 includes a plurality of door strips 311 arranged side by side, each door strip 311 extends along the first direction D1, and the plurality of door strips 311 are arranged side by side along the third direction. Adjacent door strips 311 may have a gap that prevents interference between adjacent door strips 311 during movement of the tambour door assembly 310.

One of the plurality of door strips 311 has a door strip 311a with a length greater than the remaining door strips 311, and the remaining door strips 311 have the same length. Referring to fig. 5, the length of the doorstrip 311a in the first direction D1 is greater than the lengths of the remaining doorstrips 311, and the end of the doorstrip 311a exposed to the remaining doorstrips 311 is used for triggering the third detection unit, so that the rolling door assembly 310 can stop at the limit position when being retracted and opened.

As shown in fig. 6 and 7, fig. 6 is a partially enlarged view at X1 in fig. 4. Fig. 7 shows a schematic view of a portion of the drive chain 320 of fig. 4. The embodiment of the present invention provides a driving chain 320 comprising a plurality of inner chain plates 321, a plurality of outer chain plates 322, a plurality of pin shafts 323, and a plurality of shaft sleeves 325. The plurality of inner link plates 321 and the plurality of outer link plates 322 are alternately arranged in sequence along the length direction of the driving chain 320, and the adjacent inner link plates 321 and outer link plates 322 are hinged by a pin 323. The plurality of bushings 325 are respectively sleeved on the outer peripheries of the plurality of pins 323.

The inner link plate 321 and/or the outer link plate 322 are provided with a plurality of connecting parts 324, and one ends of the plurality of door strips 311 are connected with the connecting parts 324.

In this embodiment, the inner link plate 321 and/or the outer link plate 322 are provided with a plurality of connecting portions 324, and the door bar 311 is connected to the connecting portions 324, so that the driving chain 320 drives the rolling door assembly 310 to move. The design of the connecting portion 324 of the door strip 311 connected to the inner chain plate 321 and/or the outer chain plate 322 simplifies the structure of the rolling door, thereby making the cargo bed 900 more compact.

It is understood that the inner link plate 321 of the driving chain 320 may be provided with the connecting portion 324, the outer link plate 322 may be provided with the connecting portion 324, or both the inner link plate 321 and the outer link plate 322 may be provided with the connecting portion 324.

In one embodiment, the inner link plate 321 and/or the outer link plate 322 are integrally provided with a plurality of connecting portions 324.

As an example, the outer link plate 322 is integrally provided with a connecting portion 324. Due to the design that the connecting portion 324 and the outer link plate 322 are of an integral structure, the structural strength of the connecting portion 324 and the outer link plate 322 can be enhanced, and the stability of connection between the door strip 311 and the driving chain 320 is ensured.

In one embodiment, the connecting portion 324 has a plate-shaped structure, and the connecting portion 324 is perpendicular to the inner and

outer link plates

321 and 322. Since the connecting portion 324 has a plate-like structure and is perpendicular to the inner link plate 321 and the outer link plate 322, the driving chain 320 is substantially parallel to the door strip 311 after the door strip 311 is connected to the connecting portion 324. In this way, the inner link plates 321 and the outer link plates 322 are also substantially perpendicular to the door bar 311, so that the door bar 311 is more compact after being connected with the driving chain 320, and does not occupy too much space in the first direction D1 and the third direction D3.

With continued reference to fig. 7, the connecting portion 324 extends from the outer link plate 322 in a direction away from the inner link plate 321. Since the connecting portion 324 extends in a direction away from the inner link plate 321, i.e., the connecting portion 324 is disposed outside the driving chain 320, when the door strip 311 is connected to the connecting portion 324, the door strip 311 does not cover the inner link plate 321, the outer link plate 322 and the pin 323. When the sprocket meshes with the drive chain 320, the door bar 311 does not interfere with the sprocket.

In one embodiment, the connecting portion 324 includes a first section 3242 and a second section 3243. The first section 3242 is connected to the outer link plate 322, and two opposite side surfaces in the thickness direction of the first section 3242 are coplanar with two opposite side surfaces in the thickness direction of the outer link plate 322, respectively. The second section 3243 is perpendicularly connected to the first section 3242, and the second section 3243 is connected to the doorstrip 311.

As shown in fig. 6, the door strip 311 is detachably connected to the connection portion 324. The door strip 311 and the connecting portion 324 are designed to be detachably connected, which facilitates the mounting and dismounting of the tambour door unit 30 to the cargo frame 10.

The door bar 311 has a first through hole 3111, and the connection portion 324 has a second through hole 3241, the second through hole 3241 being disposed corresponding to the first through hole 3111. The shutter unit 30 further includes a coupling bolt 330, and the coupling bolt 330 is inserted into the first through hole 3111 and the second through hole 3241.

With continued reference to fig. 4, the drive mechanism 340 is coupled to the cargo frame 10 and is drivingly connected to the drive chain 320. The driving mechanism 340 includes a driving motor 341, a driving shaft 342, a driving sprocket 343, and a driven sprocket 344. The driving motor 341 is connected to the cargo frame 10, for example, the driving motor 341 is connected to the outer side surface of the side portion 120, so that the space inside the cargo bed 900 is not occupied, and the space utilization rate is improved.

The drive shaft 342 is connected to the output of the drive motor 341 and is rotatably connected to the load frame 10. For example, both ends of the driving shaft 342 may be provided with the seated bearings 346, and the two seated bearings 346 are respectively connected to the two side portions 120.

The driving sprocket 343 is disposed on the driving shaft 342 and engaged with the driving chain 320. The power of the driving motor 341 is transmitted to the driving chain 320 through the driving shaft 342 and the driving sprocket 343 in turn, thereby driving the rolling door assembly 310 to switch between the retracted state and the opened state.

The driven sprocket 344 is connected to the cargo frame 10 and engages with the drive chain 320, and the driven sprocket 344 is used to change the winding direction of the drive chain 320.

The drive mechanism 340 further comprises a tensioning sprocket 345, the tensioning sprocket 345 being adjustably connected to the load carrying frame 10 and engaging the drive chain 320 for tensioning the drive chain 320.

As shown in fig. 8 and 9, fig. 8 is a front view of the cargo bed 900 of fig. 1. Fig. 9 shows the mounting block 622 and the guide bar 623 in an assembled view. The load station 900 also includes forks 610 and guide assemblies 620. The fork 610 is disposed in the chamber 101 and is in signal connection with the control unit for forking the goods. The guide assembly 620 is disposed within the chamber 101 for guiding the cargo into and out of the chamber 101 along the forking direction of the fork 610.

As an example, the guide members 620 are two in number and are respectively disposed at both sides of the fork 610.

The guide assembly 620 includes a base 621, a mounting frame 622, and a guide bar 623. The base 621 is fixedly attached to the bottom portion 110 of the cargo frame 10, the mounting block 622 is fixedly attached to the base 621, and the guide bar 623 is attached to the mounting block 622 and extends in the forking direction of the fork 610.

The cargo bed 900 further comprises a first detecting unit 630, wherein the first detecting unit 630 is disposed on the guiding element 620 and is in signal connection with the control unit for detecting the position of the cargo relative to the cargo frame 10 and the boundary dimension of the cargo.

As an example, the first detection unit 630 may be a correlation sensor. The number of the first detecting units 630 may be four, and two first detecting units 630 are a pair. One pair of the detecting units is disposed at two ends of one of the guiding members 620, and the other pair of the detecting units is disposed at two ends of the other guiding member 620.

The first detecting unit 630 can detect whether the boundary size of the cargo is excessively long/high and whether the position of the cargo behind the cargo frame 10 is centered.

As shown in fig. 10, fig. 10 is a schematic top view of fig. 8. The cargo bed 900 further comprises a fourth detection unit 660 arranged on the cargo frame 10 for obtaining the position of the cargo bed 900. The fourth detection unit 660 is in signal connection with the control unit.

As an example, the fourth detection unit 660 may be a code scanning assembly, which may be disposed on an outer wall surface of the side portion 120 of the cargo frame 10. The code scanning assembly can scan the two-dimensional code arranged on the surface of the upright post 70. The control unit judges the position of the cargo carrying platform 900 in the lifting direction according to different two-dimensional code information acquired by the code scanning assembly.

As shown in fig. 11, fig. 11 is a schematic diagram of the second detection unit 640. The cargo bed 900 further comprises a second detecting unit 640 disposed on the cargo frame 10 for obtaining the position information of the cargo bed 900 with respect to the columns 70. The control unit is in signal connection with the second detection unit 640 and is used for controlling the lifting limit position of the cargo carrying platform 900 according to the position information.

As an example, the second detection unit 640 is disposed on an outer surface of the side portion 120 of the cargo frame 10.

As an example, the second detection unit 640 includes a first trigger switch 641 and a second trigger switch 642. The first trigger switch 641 is configured to be triggered by a trigger disposed on the pillar 70 to generate a deceleration signal. The second trigger switch 642 is used to generate a parking signal. The control unit is in signal connection with the first trigger switch 641 for controlling the cargo carrying platform 900 to decelerate according to the deceleration signal, and the control unit is in signal connection with the second trigger switch 642 for controlling the cargo carrying platform 900 to park according to the parking signal.

For example, when the cargo bed 900 ascends along the pillar 70 and gradually approaches the limit position, the first trigger switch 641 is triggered by the trigger to generate a deceleration signal, and the control unit controls the elevator motor to decelerate according to the deceleration signal, so that the cargo bed 900 decelerates. Then, when the second trigger switch 642 receives a stop signal, the control unit controls the lifting motor to stop according to the stop signal, so that the cargo bed 900 stops at the limit position.

In this embodiment, the cargo bed 900 may be decelerated and then stopped at the limit position by the cooperation of the first trigger switch 641 and the second trigger switch 642.

As an example, the first trigger switch 641 may be a slot type switch, and the second trigger switch 642 may be a travel switch.

The cargo bed 900 further includes a third detecting unit (not shown) for detecting an in-position signal of the rolling shutter door assembly 310. The control unit is in signal connection with the third detection unit for controlling the extreme position of the movement of the roller shutter door assembly 310 relative to the cargo frame 10 in dependence on the in-position signal.

As an example, the third detection unit obtains the in-position signal of the rolling shutter door assembly 310 through the end of the longer door strip 311 a. For example, when the rolling door moves from the open state to the retracted state, the end of the door strip 311a is exposed to the outside than the other door strips 311, so that the third detection unit can detect the in-position information of the door strip 311a, and further determine that the rolling door assembly 310 has moved in position. The control unit controls the driving mechanism 340 of the rolling door unit 30 to stop according to the in-position signal.

As shown in fig. 12 and 13, fig. 12 is a perspective view illustrating the assembled cargo bed 900 and the columns 50 of fig. 1. Fig. 3 shows a schematic side view of fig. 2. The cargo bed further comprises a lifting guide unit 20 provided to the cargo frame 10 for guiding the cargo frame 10 up and down along the uprights 70. The elevation guide unit 20 includes a fixed guide wheel assembly 210, an adjustable guide wheel assembly 220, and a floating guide wheel assembly 230. The fixed guide wheel assembly 210, the adjustable guide wheel assembly 220, and the floating guide wheel assembly 230 are each capable of rolling against the column 70 to guide the lifting and lowering of the cargo frame 10 along the column 70, and to prevent the cargo frame 10 from wobbling relative to the column 70.

As shown in fig. 14 and 15, fig. 14 is a schematic view of the cargo bed 900 of fig. 12 from one perspective. Fig. 15 shows a schematic view of the cargo bed 900 of fig. 12 from another perspective. As an example, the cargo bed 900 includes four sets of guide assemblies, each set of guide assemblies including a fixed guide wheel assembly 210, an adjustable guide wheel assembly 220, and a floating guide wheel assembly 230. The four sets of guide assemblies are subdivided into two sections for guiding engagement with the two uprights 70, respectively.

Two sets of guide assemblies are provided on each of the two sides 120 of the cargo frame 10, and the two guide assemblies provided on the sides 120 are adjacent to the bottom 110 and the cover 130, respectively, along the extension of the uprights 70. In other words, two sets of guide assemblies on the same side of the cargo frame 10 are provided, one guide assembly being disposed on the side portion 120 adjacent the bottom portion 110 and the other guide assembly being disposed on the side portion 120 adjacent the cover plate 130.

As shown in fig. 16 and 17, fig. 16 is a partially enlarged view at X2 in fig. 14. Fig. 7 shows a schematic front view of the fixed guide wheel assembly 210. The fixed guide wheel assembly 210 includes a first mounting seat 211, a first guide wheel 212, a first mandrel 213, and a first snap 214.

The first mounting seat 211 is fixedly attached to the side portion 120 of the cargo frame 10, such as by being bolted to an outer wall surface of the side portion 120 of the cargo frame 10. The first guide wheel 212 is rotatably coupled to the first mounting seat 211 by a first spindle 213, and the first spindle 213 is horizontally disposed. When the cargo bed 900 is raised and lowered relative to the column 70, the first guide wheels 212 roll against the first side 710 of the column 70. The axis of the first guide wheel 212 is parallel to the first side 710 of the upright 70. The axis of the first guide wheel 212 is perpendicular to the side 120 of the load frame 10.

As shown in fig. 18, fig. 18 showsbase:Sub>A cross-sectional view alongbase:Sub>A-base:Sub>A in fig. 17. The first mandrel 213 has a catching groove along a radial direction thereof, and the first catching piece 214 is caught in the catching groove to restrict axial movement of the first mandrel 213.

As shown in fig. 19 and 20, fig. 19 is a front schematic view of adjustable guide wheel assembly 220. Fig. 20 shows a cross-sectional view along B-B in fig. 19. Adjustable guide wheel assembly 220 includes a second mounting base 221, a second guide wheel 222, an adjustment base 223, an adjustment member 224, a second core shaft 225, and a second snap member 226.

The second mount 221 is adjustably connected to the side portion 120 of the load frame 10 in a direction perpendicular to the second side 720, e.g., the second mount 221 is connected to an outer wall surface of the side portion 120 of the load frame 10. As an example, the second mounting seat 221 is provided with a kidney-shaped hole, and the kidney-shaped hole extends along a direction perpendicular to the second side surface 720 of the upright post 70. Bolts pass through the slotted holes to connect the second mount 221 to the cargo frame 10.

The second guide wheel 222 is rotatably connected to the second mounting seat 221 by a second spindle 225, and the second spindle 225 is horizontally disposed. When the cargo bed 900 is raised and lowered relative to the upright 70, the second guide wheels 222 are in rolling contact with the second side surface 720 of the upright 70. The axis of the second guide wheel 222 is parallel to the second side 720 of the upright 70. The axis of the second guide wheel 222 is perpendicular to the side 120 of the load frame 10.

The second core shaft 225 has a catch groove along a radial direction thereof, and the second catch member 226 is caught in the catch groove to restrict axial movement of the second core shaft 225.

The adjustment seat 223 is fixedly connected to the side 120 of the cargo frame 10, for example by means of a bolt connection. As an example, the adjusting seat 223 is disposed adjacent to the second mounting seat 221 and is located on a side of the second mounting seat 221 facing away from the upright 70. The adjuster 224 is adjustably connected to the adjuster seat 223, and one end of the adjuster 224 abuts against the second mounting seat 221.

As an example, the axis of the adjuster 224 may be perpendicular to the second side 720 of the upright 70, and the adjuster 224 is threadedly coupled to the adjuster socket 223. By rotating the adjusting member 224, the distance by which the adjusting member 224 protrudes out of the adjusting seat 223 is adjusted so that one end of the adjusting member 224 can be pushed against the second mount seat 221 to move relative to the cargo frame 10 in a direction toward or away from the stand column 70.

As shown in fig. 21 to 25, fig. 21 is a partially enlarged view at X3 in fig. 15. Fig. 22 shows a front view of the floating guide wheel assembly 230. Figure 23 shows a cross-sectional view of C-C of figure 22. Fig. 24 shows a cross-sectional view D-D of fig. 22. Fig. 25 shows a partially enlarged view at X4 in fig. 26. The floating guide wheel assembly 230 includes a third mounting seat 231, a third guide wheel 232, a third mandrel 237, and a third snap 238. The third mount 231 is floatingly coupled to the cargo frame 10 in a direction perpendicular to the third side 730. The third guide wheel 232 is rotatably connected to the third mounting seat 231 by a third spindle 237, and the third spindle 237 is horizontally disposed. When the cargo bed 900 is raised and lowered relative to the column 70, the third guide wheels 232 are in rolling contact with the third side 730 of the column 70. The axis of the third guide wheel 232 is parallel to the third side 730 of the upright 70.

The third mandrel 237 has a catching groove along a radial direction thereof, and the third catching member 238 is coupled to the third mounting seat 231 and caught in the catching groove to restrict an axial movement of the third mandrel 237.

The third mounting seat 231 includes a first seat 2311 and a second seat 2312, the first seat 2311 and the second seat 2312 are arranged side by side, and two ends of the third shaft 237 are respectively connected with the first seat 2311 and the second seat 2312.

With continued reference to fig. 21-25, the third mount 231 is floatingly connected to the cargo frame 10 in a manner that is resilient. As an example, the floating guide wheel assembly 230 further includes a guide member 233 and an elastic member 234. The guide member 233 is attached to the cargo frame 10, for example, the guide member 233 is fixedly attached to the inner wall surface of the side portion 120 of the cargo frame 10, and one end of the guide member 233 is attached to the inner wall surface of the side portion 120. Further, the guide member 233 may have a rod-like structure, and one end of the guide member 233 is fixedly attached to an inner wall surface of the side portion 120 of the cargo frame 10, and the guide member 233 is perpendicular to the inner wall surface.

The third mount 231 is slidably coupled to the guide 233 in the floating direction. The elastic member 234 is connected to the third mount 231 for applying an elastic force to the third mount 231 in a direction approaching the pillar 70.

In the present embodiment, the third mounting seat 231 has a tendency to approach the upright 70 along the guide 233 by the elastic force of the elastic member 234, so that the third guide wheel 232 can always be in rolling contact with the third side 730 of the upright 70 when the cargo bed 900 is lifted along the upright 70.

In addition, when the pressing force between the third guide wheel 232 and the upright post 70 is too large, the magnitude of the elastic force of the elastic member 234 is variable, so that the reaction force applied to the third guide wheel 232 by the upright post 70 can drive the third mounting seat 231 to move along the guide member 233 in the direction away from the upright post 70, thereby preventing the too large pressing force between the third guide wheel 232 and the third side 730 of the upright post 70 from affecting the lifting of the cargo bed 900.

As shown in fig. 23 and 25, the third mount 231 has a through hole 2313, and the guide 233 is slidably inserted through the through hole 2313. The floating guide wheel assembly 230 further includes a first locking member 235, the first locking member 235 being locked to the guide 233. One end of the elastic element 234 abuts against the first locking element 235, and the other end abuts against the third mounting seat 231.

As an example, the elastic member 234 may be a compression spring. The elastic member 234 is sleeved on the outer periphery of the guide member 233, and two ends of the elastic member 234 respectively abut against the first locking member 235 and the third mounting seat 231. The magnitude of the elastic force of the elastic member 234 can be adjusted by adjusting the position of the first locking member 235 on the guide 233.

In one embodiment, the first locking member 235 may be a nut. The guide 233 has an external thread structure at an outer circumference thereof, and a nut is threadedly coupled to the outer circumference of the guide 233.

Of course, in other embodiments, in the manner that the third mounting seat 231 is floatingly connected to the cargo frame 10, the mounting positions of the third mounting seat 231, the first locking member 235 and the elastic member 234 may also be: one end of the guide member 233 is fixedly attached to the outer wall surface of the side portion 120 of the cargo frame 10, and the other end of the guide member 233 extends to the outside of the cargo frame 10. The first locking member 235 is locked to the end of the guide 233 remote from the cargo frame 10. The third mounting seat 231 and the elastic member 234 are disposed between the first locking member 235 and the cargo frame 10, one end of the elastic member 234 abuts against the third mounting seat 231, and the other end of the elastic member 234 abuts against the outer wall surface of the cargo frame 10. When the elastic member 234 is in a compressed state, one side of the third mounting seat 231 is in contact with the first locking member 235, and the other side of the third mounting seat 231 is in contact with the elastic member 234.

With continued reference to fig. 23 and 25, the floating guide wheel assembly 230 further includes a limiting member 236, the limiting member 236 is connected to the third mounting seat 231 and the cargo frame 10 for limiting the extreme position of the third mounting seat 231 moving towards the column 70. The limiting member 236 limits the limit position of the third mounting seat 231, so as to prevent the third guide wheel 232 from excessively pressing the third side 730 of the upright post 70.

As an example, the limiting member 236 includes a limiting rod 2361 and a second locking member 2362. The limit rod 2361 is screwed to the third mount 231, and when one end of the limit rod 2361 abuts against the inner wall surface of the cargo frame 10, the third mount 231 is at the limit position. The second locking member 2362 locks the stopper bar 2361 and the third mounting seat 231.

Specifically, by adjusting the exposed length of the end of the stop bar 2361 abutting against the cargo frame 10, the limit position of the third mounting seat 231 moving toward the column 70 can be adjusted, and the abutting force between the third guide wheel 232 and the third side 730 of the column 70 can be adjusted.

It should be noted that the outer surface of the pillar 70 is not absolutely flat but has irregularities. If the limit position of the third mounting seat 231 moving toward the column 70 is not adjusted to a proper distance, when the cargo bed 900 is lifted along the column 70, there may be a gap between the third guide wheel 232 and the third side 730 when the third guide wheel 232 moves to the most recess of the third side 730 of the column 70, and the rolling contact is not possible.

In this embodiment, the lowest recess of the third side 730 of the column 70 is obtained by measurement, and the position of the cargo bed 900 relative to the column 70 is moved such that the third guide wheels 232 correspond to the lowest recess of the third side 730 of the column 70. At this time, the exposed length of the end of the limiting rod 2361 abutting against the cargo frame 10 is adjusted, and the position of the first locking member 235 relative to the guiding member 233 is adjusted, so that the third guiding wheel 232 can just abut against the most concave portion of the third side 730 of the upright 70, and the elastic member 234 has a certain elastic pre-tightening force.

The magnitude of the elastic pre-tightening force of the elastic member 234 is determined so that the cargo bed 900 does not shake significantly relative to the upright 70 during the process of the cargo bed 900 ascending and descending along the upright 70 and the process of the stacker reciprocating.

It can be seen that the guide 233 not only serves to mount the third mounting seat 231, but also serves to connect the elastic member 234, thereby adjusting the magnitude of the floating force. In addition, under the combined action of the elastic member 234 and the limiting member 236, the third guide wheel 232 is prevented from pressing the third side 730 of the column 70 too much, and the third guide wheel 232 is ensured to contact the third side 730 of the column 70 under the condition that the elastic member 234 has enough elastic force.

Referring back to fig. 16, the side 120 of the cargo frame 10 has a window 140. The third mount 231 is provided on the inner wall surface of the cargo frame 10, and at least a portion of the third guide wheel 232 is exposed to the outer wall surface of the cargo frame 10 through the window 140.

The first side 710, the second side 720, and the third side 730 of the post 70 are not coplanar with one another. Thus, when the cargo bed 900 is lifted along the column 70, the contact force of the first guide wheel 212 on the column 70, the contact force of the second guide wheel 222 on the column 70, and the contact force of the third guide wheel 232 on the column 70 are at least in three different directions, so that the cargo bed 900 can be lifted along the column 70 more stably, and the cargo bed 900 is prevented from shaking as much as possible.

Further, the first side 710 and the second side 720 are disposed oppositely, the third side 730 is connected to the first side 710 and the second side 720, and the third side 730 faces the moving direction of the stacker.

Because the first side surface 710 and the second side surface 720 are arranged in a back-to-back manner, which is equivalent to that the upright post 70 is clamped between the fixed guide wheel assembly 210 and the adjustable guide wheel assembly 220, the direction of the abutting force of the first guide wheel 212 acting on the upright post 70 is just opposite to that of the abutting force of the second guide wheel 222 acting on the upright post 70, and the cargo platform 900 is prevented from shaking along the interval arrangement direction of the fixed guide wheel assembly 210 and the adjustable guide wheel assembly 220.

In addition, since the stacker has a high moving speed in the moving direction, the cargo bed 900 may shake due to inertia in the acceleration and deceleration processes. In this embodiment, the third side 730 is disposed toward the moving direction of the stacker, so that the third guide wheel 232 of the floating guide wheel assembly 230 can resist the shaking of the cargo bed 900 due to the inertia force as much as possible under the action of the elastic member 234, and finally play a role of shaking prevention in the moving direction of the stacker.

It can be seen that the cargo bed 900 is restrained from rocking in the horizontal direction by the cooperation of the fixed guide wheel assembly 210, the adjustable guide wheel assembly 220 and the floating guide wheel assembly 230.

It is understood that the first guide wheel 212, the second guide wheel 222, and the third guide wheel 232 can each be an encapsulated wheel.

With continued reference to fig. 12 and 13, the cargo bed further includes a fall arrest member 40 disposed on the cargo frame 10 for frictionally engaging the stanchion 70 to prevent the stacker from falling rapidly.

As shown in fig. 12, 13 and 26, fig. 26 is a top view of fig. 12. The fall arrest unit 40 of the present embodiment includes a stationary jaw assembly 410, a movable jaw assembly 420, and a drive assembly 430. The post 70 is disposed on a side of the load frame 10, the stationary jaw assembly 410 is fixedly coupled to the load frame 10 and disposed on a first side 710 of the post 70, and the movable jaw assembly 420 is coupled to the load frame 10 and disposed on a second side 720 of the post 70. The actuating assembly 430 is adapted to actuate the movable clamp assembly 420 into frictional contact with the second side 720 when the cargo frame 10 is dropped, and to cause the movable clamp assembly 420 to urge the cargo frame 10 in a twisting motion about the vertical axis until the stationary clamp assembly 410 is in frictional contact with the first side 710.

The drive assembly 430 is capable of driving the movable clamp assembly 420 into frictional contact with the second side 720 when the cargo frame 10 is dropped, which may reduce the rate of dropping of the cargo frame 10 by the frictional force generated between the movable clamp assembly 420 and the second side 720 of the stand 70. At the same time, the movable clamp assembly 420 is also able to twist about the vertical axis against the cargo frame 10 until the stationary clamp assembly 410 makes frictional contact with the first side 710. In this manner, the fixed jaw assembly 410 and the movable jaw assembly 420 generate frictional forces with the first side 710 and the second side 720 of the stand 70, respectively, increasing the frictional force between the load frame 10 and the stand 70, and the greater frictional force may reduce the rate of descent of the load frame 10 in a timely manner until the load frame 10 is stopped.

Therefore, the embodiment of the present invention provides a stacker, when the cargo frame 10 falls down, the movable clamp assembly 420 can push the cargo frame 10 to twist around the vertical direction as the axis, so that the fixed clamp assembly 410 can also be in frictional contact with the first side 710. Thus, under the combined action of the fixed clamp assembly 410 and the movable clamp assembly 420, not only the anti-falling effect can be achieved, but also the time from the falling to the stopping of the cargo frame 10 can be effectively shortened, and the safety is ensured.

The first side 710 of the post 70 is disposed opposite the second side 720. In other words, the stationary jaw assembly 410 and the movable jaw assembly 420 are disposed on opposite sides of the upright 70, respectively. When the fixed jaw assembly 410 contacts the first side surface 710 and the movable jaw assembly 420 contacts the second side surface 720, the first side surface 710 and the second side surface 720 are oppositely arranged, so that the upright 70 is stressed more uniformly, and the stability of the stacker is ensured.

With continued reference to FIG. 26, the stacker includes two uprights 70, with the two uprights 70 being disposed on opposite sides of the cargo frame 10. The stacker comprises two groups of correspondingly arranged fixed clamp assemblies 410 and movable clamp assemblies 420, wherein each group of fixed clamp assemblies 410 and movable clamp assemblies 420 are respectively arranged on a first side face 710 and a second side face 720 of the upright post 70.

As shown in fig. 26, along the arrangement direction of the two columns 70, the fixed jaw assembly 410 of one set is disposed to correspond to the movable jaw assembly 420 of the other set. Specifically, the movable clamp assembly 420 located at the lower left corner is disposed corresponding to the fixed clamp assembly 410 located at the lower right corner, and the fixed clamp assembly 410 located at the upper left corner is disposed corresponding to the movable clamp assembly 420 located at the upper right corner. Two movable jaw assemblies 420 are arranged diagonally and two fixed jaw assemblies 410 are arranged diagonally.

When the two movable jaw assemblies 420 are in frictional contact with the two uprights 70, respectively, since the two movable jaw assemblies 420 are arranged diagonally, the reaction forces exerted on the two movable jaw assemblies 420 by the two uprights 70 are in opposite directions, so that the cargo frame 10 can be slightly twisted about its center, eventually bringing the two fixed jaw assemblies 410 into frictional contact with the two uprights 70, respectively.

As shown in fig. 28 and 29, fig. 28 shows a front view of the stationary jaw assembly 410 of fig. 12. Fig. 29 shows a right side view of fig. 28. The stationary jaw assembly 410 includes a fifth mounting seat 411, a second friction block 412, and a second adjusting unit 414.

The fifth mount 411 is fixedly attached to the cargo frame 10, for example, by bolts to the outer side wall surface of the cargo frame 10. Second friction block 412 is coupled to fifth mount 411 for frictional contact with first side 710 of upright 70.

Further, a second friction block 412 is adjustably coupled to the fifth mounting seat 411 in a direction toward or away from the upright 70. The second adjusting unit 414 is used for adjusting the position of the second friction block 412 relative to the fifth mounting seat 411.

The size of the gap between the second friction block 412 and the first side 710 of the upright 70 can be adjusted by the second adjusting unit 414, so that the gap can meet the design requirement.

As an example, the second friction block 412 is provided with a second waist-shaped hole 4121, and the second waist-shaped hole 4121 extends along a direction perpendicular to the extending direction of the upright 70. The second friction block 412 and the fifth mounting seat 411 may be connected by screws, and the screws are inserted through the second kidney-shaped holes 4121.

As an example, the second adjusting unit 414 includes a second adjusting lever 4141, and the second adjusting lever 4141 is screw-coupled to the fifth mount 411. The axis of the second adjustment lever 4141 is perpendicular to the extending direction of the upright 70, and one end of the second adjustment lever 4141 abuts against the second friction block 412.

When the second friction block 412 needs to be adjusted, the second adjusting lever 4141 is rotated, so that the second adjusting lever 4141 pushes the second friction block 412 to move relative to the fifth mounting seat 411.

The second friction block 412 includes a second body 4122 and a second wear member 4123, the second body 4122 is adjustably connected to the fifth mounting seat 411, and the second wear member 4123 is detachably connected to the second body 4122 and is configured to frictionally contact the first side 710.

The second wear member 4123 may be formed of a wear resistant material. The second wear-resistant part 4123 is detachably connected with the second body 4122, so that the second wear-resistant part 4123 can be replaced conveniently.

As an example, the second wear member 4123 and the second body 4122 may be connected by a screw, but not limited thereto.

The stationary jaw assembly 410 further includes a limiting block 413 connected to the fifth mounting seat 411 for limiting the relative movement of the second wear member 4123 with respect to the second body 4122 when the second wear member 4123 is in frictional contact with the first side 710.

It will be appreciated that when the second wear member 4123 is in frictional contact with the first side 710 of the post 70, the second wear member 4123 will have a tendency to move upwardly along the post 70 due to the frictional forces generated between the second wear member 4123 and the post 70. If the strength of the connection between the second wear member 4123 and the second body 4122 is insufficient, relative movement of the second wear member 4123 with respect to the second body 4122 may result. If the second wear member 4123 and the second body 4122 are connected by screws, the relative movement of the second wear member 4123 with respect to the second body 4122 will subject the screws to shear forces, resulting in the screws being susceptible to breakage.

In this embodiment, the limiting block 413 is disposed to limit the movement of the second wear-resistant member 4123 relative to the second body 4122, so as to avoid affecting the connection stability between the second wear-resistant member 4123 and the second body 4122.

As shown in fig. 30, fig. 30 is a partially enlarged view at X5 in fig. 27. The cargo frame 10 includes a stop plate 150. The stacker further comprises a lifting rope 60, and the lifting rope 60 is used for driving the cargo carrying frame 10 to lift. The lift cords 60 are disposed through the perforations 151 of the stopper plate 150, and the drive assembly 430 is connected to one end of the lift cords 60 and can be stopped by the stopper plate 150 such that, in a normal state, the cargo frame 10 is suspended from one end of the lift cords 60 by the drive assembly 430.

Specifically, in the normal state, the drive assembly 430 is connected to one end of the lift cords 60, and the drive assembly 430 abuts against the stop plate 150 of the cargo frame 10. One end of the lift cord 60 is connected to the stop plate 150 of the load frame 10 via the drive assembly 430, and the lift cord 60 can pull the load frame 10 up and down. It will be appreciated that the weight of the load frame 10 is balanced by the tension of the lift cords 60 such that the lift cords 60 pull the load frame 10 up and down.

It will be understood that "normal" refers to a condition in which the cargo frame 10 is normally raised and lowered without the lift cords 60 breaking and the drive motor stalling.

As shown in fig. 31-33, fig. 31 is a perspective view of the movable jaw assembly 420 and the drive assembly 430 of fig. 12, shown installed. Fig. 32 shows a side view of the schematic of fig. 31. Fig. 33 shows a cross-sectional view along E-E of fig. 32. The driving assembly 430 includes a pressure receiving member 510 and an elastic member 520.

The pressure receiving member 510 has receiving grooves 511 and through holes 512 communicating with each other, and the receiving grooves 511 and the through holes 512 penetrate through both opposite side surfaces of the pressure receiving member 510 in the vertical direction. The lifting rope 60 passes through the accommodating groove 511 and the through hole 512, and one end of the lifting rope 60 exposed out of the pressed part 510 is connected with the pressed part 510 through a limiting member 80. Through the limiting member 80, the lifting rope 60 drives the pressed member 510 to move upward together.

As described above, since the top of the pressure receiving member 510 abuts against the stop plate 150 of the cargo frame 10, when the lifting cord 60 is lifted, the cargo frame 10 is pulled by the pressure receiving member 510 to be lifted and lowered.

It is understood that the stop 80 may be, but is not limited to, a nut that is threadedly engaged with the lift cord 60.

As an example, the lifting rope 60 includes a steel wire rope 601 and a pressing head 602, the pressing head 602 is fixedly connected to one end of the steel wire rope 601, the pressing head 602 is inserted into the receiving groove 511 and the through hole 512 of the pressed part 510, and the limiting member 80 is connected to a portion of the pressing head 602 exposed out of the pressed part 510.

The elastic element 520 is disposed in the receiving groove 511, one end of the elastic element 520 abuts against the stop plate 150, and the other end abuts against the bottom of the receiving groove 511, so as to apply an elastic force to the pressed element 510 in a direction away from the stop plate 150.

In the normal state, the resilient member 520 is disposed in the receiving slot 511 and is blocked in the receiving slot 511 by the stop plate 150 of the cargo frame 10, such that the resilient member 520 is in a compressed state.

In the event of a break in the lift cords 60 and/or a stall in the drive motor, the cargo frame 10 drops down rapidly, whereupon the spring force of the spring member 520 is released, causing the spring member 520 to apply a spring force to the pressure receiving member 510 in a direction away from the stop plate 150.

One end of the pressure receiving member 510 is connected to the movable jaw assembly 420. The pressure receiving member 510, under the elastic force of the elastic member 520, drives the movable jaw assembly 420 into frictional contact with the second side surface 720 of the upright 70.

It is understood that the elastic member 520 may be a spring, such as a compression spring, but not limited thereto.

A spacer 530 may be further disposed between the elastic member 520 and the stopper plate 150, and one end of the elastic member 520 abuts against the stopper plate 150 through the spacer 530. By providing the spacer 530, one end of the elastic member 520 is prevented from being inserted into the penetration hole 151 of the stopper plate 150.

With continued reference to fig. 30, the stacker further comprises a protection switch 670, the protection switch 670 being connected to the cargo frame 10 for obtaining a movement signal of the driving assembly 430. The control unit is in signal connection with the protection switch 670 and is used for locking the motor of the stacker according to the movement signal of the driving assembly 430.

As an example, the protection switch 670 may include a proximity switch, a travel switch, and the like, but is not limited thereto.

It will be appreciated that when the drive motor stalls without the lift cords 60 breaking, the cargo frame 10 drops rapidly and the pressure member 510 moves away from the stop plate 150 under the force of the resilient members 520. At this time, the protection switch 670 may obtain a moving signal of the pressed piece 510, and the controller may control the driving motor to lock the brake according to the moving signal, so as to prevent the cargo frame 10 from further dropping.

It is understood that the pressure receiving member 510 has a diameter-varied portion 513 at the outer circumference thereof. The size of the diameter-variable portion 513 is different from the size of the pressure receiving member 510 at other positions. When the pressure receiving member 510 moves away from the stopper plate 150, the protection switch 670 can more easily obtain a moving signal of the pressure receiving member 510 through the variable diameter portion 513.

In an embodiment, the reducing portion 513 may be a chamfer, but is not limited thereto.

As shown in fig. 34, fig. 34 is a schematic view of the protection switch 670 of fig. 27. The protection switch 670 may be fixedly attached to the cargo frame 10 by the mount bracket 71.

As shown in fig. 31, 32 and 35, fig. 35 is a partial cross-sectional view of a portion of the slider 424 of fig. 31 cut away. The movable jaw assembly 420 includes a fourth mounting seat 421, a first friction block 422, a slider 424, and a link unit 423.

The fourth mounting seat 421 is fixedly connected to the cargo frame 10, for example, the fourth mounting seat 421 is fixedly connected to the cargo frame 10 by screws. The first friction block 422 is movably coupled to the fourth mount 421. The sliding member 424 is connected to the fourth mounting seat 421, and is configured to press the first friction block 422 together with the upright 70 when the first friction block 422 is in frictional contact with the upright 70. The first friction block 422 and the slider 424 are slidably coupled in the sliding direction by a sliding structure 460. The linking unit 423 is connected to the first friction block 422 and the driving assembly 430, and is configured to drive the first friction block 422 to move toward the upright 70 when the driving assembly 430 operates, until the first friction block 422 is in frictional contact with the second side surface 720.

The first friction block 422 is slidably connected to the fourth mounting seat 421 along a sliding direction, and the sliding direction is inclined relative to the extending direction of the length of the upright column 70, so that the linking unit 423 drives the first friction block 422 to move upward and close to the upright column 70.

It will be appreciated that when the first friction block 422 slides obliquely upward along the sliding direction, the first friction block 422 comes into frictional contact with the second side 720 of the stand 70, and this frictional force serves to reduce the rate of the dropping of the cargo frame 10. At the same time, the friction force causes the first friction block 422 to continue to slide in the sliding direction, and due to the sliding direction being inclined upward, the first friction block 422 is pressed by the sliding member 424 to continue to press the second side surface 720 of the upright 70, and the friction force between the first friction block 422 and the upright 70 is further increased until the cargo frame 10 stops falling down.

As shown in fig. 36 and 37, fig. 36 is a schematic view of the first friction block 422. Fig. 37 shows a schematic view of the slider 424. First friction block 422 has a first sliding surface 4221 and slider 424 has a second sliding surface 4241. First and second sliding

surfaces

4221 and 4241 are each parallel to the sliding direction and slidably engaged, and when first friction block 422 is in frictional contact with upright 70, second sliding surface 4241 presses first friction block 422 at least in a direction perpendicular to upright 70.

The first and second sliding

surfaces

4221 and 4241 are each obliquely arranged and parallel to the sliding direction. When the first friction block 422 is in frictional contact with the upright 70, the first sliding surface 4221 and the second sliding surface 4241 not only can relatively slide, but the second sliding surface 4241 can also press the first friction block 422 at least in a direction perpendicular to the upright 70, so as to increase the friction force between the first friction block 422 and the upright 70 and help to stop the cargo frame 10 in time.

The slider 424 has a slide groove 4242, and a groove bottom of the slide groove 4242 forms a second slide surface 4241. At least a portion of the first friction block 422 is slidably disposed in the sliding slot 4242.

With continued reference to fig. 35-37, the sliding structure 460 includes a slot 461, a first mounting hole 462, a first pin 463, a second mounting hole 464, and a second pin 465.

The elongated hole 461 is provided in one of the first friction block 422 and the slider 424 and extends in the sliding direction. The first and second mounting

holes

462 and 464 are formed in the other of the first friction block 422 and the slider 424. The first pin 463 is inserted into the elongated hole 461 and the first mounting hole 462 and is movable in the extending direction of the elongated hole 461. The second pin 465 is inserted into the elongated hole 461 and the second mounting hole 464, and is movable along the extending direction of the elongated hole 461.

As an example, a long hole 461 is provided on the first friction block 422, a first mounting hole 462 and a second mounting hole 464 are provided on the slider 424, and the second mounting hole 464 is spaced apart from the first mounting hole 462 in the sliding direction. When the first friction block 422 slides in the sliding direction with respect to the slider 424, the first pin 463 and the second pin 465 move in the extending direction of the elongated hole 461.

In a state where the first friction block 422 is not in frictional contact with the column 70, the first pin 463 abuts against one end of the elongated hole 461 close to the column 70. The first pin 463 abuts against one end of the elongated hole 461 close to the upright 70, so that the first friction block 422 does not slide downward in a normal state.

As shown in fig. 35, the slider 424 is movably connected to the fourth mount 421. The movable jaw assembly 420 further comprises a first adjustment unit 425, the first adjustment unit 425 being connected to the fourth mount 421 for adjusting the position of the slider 424 relative to the fourth mount 421 in a direction away from or towards the upright 70.

The position of the sliding member 424 relative to the fourth mounting seat 421 can be adjusted by the first adjusting unit 425, so as to adjust the size of the gap between the first friction block 422 and the second side surface 720 of the upright 70, so that the gap can meet the design requirement.

Further, the slider 424 is movably connected to the fourth mounting seat 421 in a direction perpendicular to the extending direction of the upright 70.

As an example, the sliding member 424 is provided with a first waist-shaped hole 4243, and the first waist-shaped hole 4243 extends along a direction perpendicular to the extending direction of the upright post 70. The sliding member 424 and the fourth mounting seat 421 can be connected by a screw, and the screw is inserted into the first waist-shaped hole 4243.

As an example, the first adjusting unit 425 includes a first adjusting lever 4251, and the first adjusting lever 4251 is screw-coupled to the fourth mount 421. The axis of the first adjustment rod 4251 is perpendicular to the extending direction of the upright 70, and one end of the first adjustment rod 4251 is abutted against the sliding member 424.

When the first friction block 422 needs to be adjusted, the first adjusting rod 4251 is rotated, so that the first adjusting rod 4251 pushes the sliding member 424 to move relative to the fourth mounting seat 421.

The first friction block 422 includes a first body 4222 and a first wear member 4223, the first body 4222 is slidably connected to the slider 424, and the first wear member 4223 is detachably connected to the first body 4222 and is adapted to be in frictional contact with the second side surface 720. The elongated hole 461 may be opened on the first body 4222.

The first wear member 4223 may be made of a wear resistant material. The first wear-resistant piece 4223 is detachably connected with the first body 4222, so that the first wear-resistant piece 4223 can be replaced conveniently.

As an example, the first wear member 4223 and the first body 4222 may be connected by a screw, but not limited thereto.

As shown in fig. 32 and 38, fig. 38 shows a cross-sectional view along F-F in fig. 32. The interlocking unit 423 includes a swinging member 431 and a jacking member 432. The swinging member 431 is hinged to the fourth mounting seat 421, and one end of the swinging member 431 is floatingly connected to the driving assembly 430. One end of the lift member 432 is connected to the first friction block 422, and the other end of the lift member 432 abuts the other end of the swinging member 431.

Specifically, the pressure receiving member 510 of the driving assembly 430 is floatingly connected to the swinging member 431. As an example, the swinging member 431 has a notch 433 at one end, and the pressure receiving member 510 is floatingly disposed in the notch 433. When the pressure receiving member 510 starts to move downward by the elastic force of the elastic member 520, the pressure receiving member 510 pushes against the edge of the notch 433 of the swinging member 431, so that the swinging member 431 swings.

When the elastic force of the driving assembly 430 is released, the swinging member 431 can be driven to swing relative to the fourth mounting seat 421, and then the swinging member 431 can push against the lifting member 432, so that the first friction block 422 can finally slide along the sliding direction.

As an example, the hinge axis of the swinging member 431 and the fourth mounting seat 421 may be horizontally disposed.

When the pressure receiving member 510 moves downward, the diameter-variable portion 513 of the pressure receiving member 510 may abut against the edge of the notch 433 of the swinging member 431, thereby driving the swinging member 431 to swing.

As shown in fig. 30, the stacker further includes a returning member 680, and the returning member 680 is connected to the cargo frame 10 and the interlocking unit 423 to return the interlocking unit 423.

As an example, the restoring member 680 may be a spring, such as a tension spring. One end of the restoring member 680 is connected to the stopper plate 150 of the cargo frame 10, and the other end of the restoring member 680 is connected to the swinging member 431. The restoring member 680 may provide the oscillating member 431 with an elastic force to move to the normal state when the driving motor is not stalled and the lift cord 60 is not broken.

For example, in the normal state, the swinging member 431 is horizontally disposed. The swinging member 431 does not contact the jacking member 432, or the swinging member 431 just contacts the jacking member 432.

As shown in fig. 39, fig. 39 is a schematic view of the cargo bed from yet another perspective. The cargo bed 900 further comprises a fifth detection unit 691 and an image acquisition unit 692. The fifth detecting unit 691 is arranged on the cargo frame 10 and in signal connection with the control unit for detecting whether the target pick-up location on the shelf has cargo. An image acquisition unit 692 is arranged on top of the load frame 10 and is in signal connection with the control unit for detecting in real time the process of picking up the load by the forks 610. For determining the cause of the failure based on the image obtained by the image obtaining unit 692.

It is understood that the various embodiments/implementations provided by the present invention can be combined without contradiction, and are not illustrated herein.

In the embodiments of the present invention, the terms "first", "second", "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are used broadly and should be construed to include, for example, "connected" may be a fixed connection, a detachable connection, or an integral connection; "connected" may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the embodiments of the present invention can be understood by those skilled in the art according to specific situations.

In the description of the embodiments of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description of the embodiments of the present invention and simplification of the description, but do not indicate or imply that the device or unit indicated must have a specific orientation, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the embodiments of the present invention.

In the description of the present specification, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only a preferred embodiment of the invention and is not intended to limit the same, and various modifications and changes may be made to the embodiment by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the embodiments of the present invention should be included in the scope of the embodiments of the present invention.

Claims

1. A cargo bed, comprising:

a cargo carrying frame (10) having a cavity (101) and an opening (102), said cavity (101) for receiving cargo, said opening (102) communicating with said cavity (101) for entry and exit of said cargo into and out of said cavity (101);

a roller door unit (30) arranged at the cargo frame (10) for closing or opening the opening (102);

a fire extinguishing unit (50) arranged at the cargo frame (10) for spraying a fire extinguishing substance into the chamber (101); and

and the control unit is in signal connection with the rolling door unit (30) and the fire extinguishing unit (50) and is used for controlling the rolling door unit (30) to close the opening (102) and controlling the fire extinguishing unit (50) to extinguish fire.

2. The load table of claim 1, further comprising:

the fork (610) is arranged in the chamber (101), is in signal connection with the control unit and is used for forking goods; and

a guide assembly (620) disposed within the chamber (101) for guiding the cargo into and out of the chamber (101) along a forking direction of the fork (610).

3. The cargo bed according to claim 2, wherein the guide assembly (620) comprises:

a base (621) fixedly connected to the bottom portion (110) of the cargo frame (10);

a mounting frame (622) fixedly connected to the base (621); and

a guide bar (623) attached to the mounting frame (622) and extending in a forking direction of the fork (610).

4. The cargo bed of claim 2, wherein the cargo bed further comprises:

a first detection unit (630) arranged on the guide assembly (620) and in signal connection with the control unit for detecting the position of the cargo relative to the cargo frame (10) and the boundary dimensions of the cargo.

5. The cargo bed of claim 1, wherein the cargo bed further comprises:

the second detection unit (640) is arranged on the cargo frame (10) and used for obtaining the position information of the cargo platform relative to the upright posts;

the control unit is in signal connection with the second detection unit (640) and is used for controlling the lifting limit position of the cargo carrying platform according to the position information.

6. The cargo bed according to claim 5, characterized in that the second detection unit (640) comprises:

the first trigger switch (641) is used for being triggered by a trigger piece arranged on the upright post to generate a deceleration signal;

a second trigger switch (642) for generating a parking signal;

the control unit is in signal connection with the first trigger switch (641) and is used for controlling the cargo carrying platform to decelerate according to the deceleration signal; the control unit is in signal connection with a second trigger switch (642) and is used for controlling the goods carrying platform to stop according to the stop signal.

7. The cargo bed according to claim 1, wherein the tambour door unit (30) comprises:

a roller door assembly (310) comprising a plurality of door strips (311) arranged side by side, the plurality of door strips (311) being used for closing or opening the opening (102);

the driving chain (320) comprises a plurality of inner chain plates (321), a plurality of outer chain plates (322) and a plurality of pin shafts (323), and the inner chain plates (321) are hinged with the outer chain plates (322) through the pin shafts (323); the inner chain plate (321) and/or the outer chain plate (322) are/is provided with a plurality of connecting parts (324), and one end of each door strip (311) is connected with the connecting parts (324); and

the driving mechanism (340) is arranged on the loading frame (10) and is in driving connection with the driving chain (320).

8. The load table of claim 1, further comprising:

the lifting guide unit (20) is arranged on the loading frame (10) and is used for guiding the loading frame (10) to lift along a stand column; the elevation guide unit (20) includes:

a stationary guide wheel assembly (210) comprising a first mounting seat (211) and a first guide wheel (212), the first mounting seat (211) being fixedly connected to the cargo frame (10), the first guide wheel (212) being rotatably connected to the first mounting seat (211) for abutment with a first side surface (710) of the column;

an adjustable guide wheel assembly (220) comprising a second mounting base (221) and a second guide wheel (222), said second mounting base (221) being adjustably connected to said cargo frame (10), said second guide wheel (222) being rotatably connected to said second mounting base (221) for abutment with a second side surface (720) of said upright; and

a floating guide wheel assembly (230) comprising a third mounting seat (231) and a third guide wheel (232), said third mounting seat (231) being floatingly connected to said cargo frame (10), said third guide wheel (232) being rotatably connected to said third mounting seat (231) for abutment with a third side surface (730) of said upright; the first side (710), the second side (720), and the third side (730) are not coplanar with one another.

9. The cargo bed according to claim 8, wherein the first side (710) is disposed opposite the second side (720);

the third side face (730) is connected to the first side face (710) and the second side face (720), and the third side face (730) faces the moving direction of the stacker.

10. The load table according to claim 1, further comprising a fall-prevention unit (40) provided to the load frame (10) for frictional contact with a column of a stacker; the fall protection unit (40) comprises:

a stationary clamp assembly (410) fixedly attached to the cargo frame (10) and disposed on a first side (710) of the column;

a movable clamp assembly (420) connected to the cargo frame (10) and disposed on the second side (720) of the upright; and

a drive assembly (430) for driving the movable clamp assembly (420) into frictional contact with the second side (720) and causing the movable clamp assembly (420) to twist against the cargo frame (10) until the stationary clamp assembly (410) is in frictional contact with the first side (710) when the cargo frame (10) is dropped.

11. A stacker crane comprising the cargo bed of any of claims 1 to 10.