CN113023618B

CN113023618B - Cargo lifter

Info

Publication number: CN113023618B
Application number: CN202110469687.3A
Authority: CN
Inventors: 李洹; 赵海涛; 童辛迪
Original assignee: Xinxiang Vocational and Technical College
Current assignee: Xinxiang Vocational and Technical College
Priority date: 2021-04-29
Filing date: 2021-04-29
Publication date: 2021-07-30
Anticipated expiration: 2041-04-29
Also published as: CN113023618A

Abstract

The invention relates to the field of transportation, in particular to a cargo lift. The technical problem is as follows: a gap exists between the cargo elevator and the ground, and the cargo carrying bin is easy to float up and down, so that the normal passing of the unmanned vehicle is influenced. The technical scheme is as follows: a cargo elevator comprises a lifting assembly, a transportation assembly, a support table and a control table. The invention realizes the lifting and conveying work of the goods shelf which is carried by the unmanned vehicle, the gap between the device and the ground is embedded and the goods carrying bin is locked, a flat road surface is provided for the unmanned vehicle to pass through, the goods shelf placed in the device can be fixed front and back, and the goods shelf is prevented from inclining and collapsing due to the shaking of the goods carrying bin in the moving process.

Description

Cargo lifter

Technical Field

The invention relates to the field of transportation, in particular to a cargo lift.

Background

Along with in the transportation to the goods, more and more transportation type unmanned vehicles put into use, in order to satisfy unmanned vehicle's work service environment to and improve unmanned vehicle's application range, need provide the unmanned vehicle and can carry out the goods lift of striding high transportation work and adapt to unmanned vehicle's operational requirement.

The goods shelf transportation unmanned vehicle is a small compact unmanned vehicle, and can drill into the bottom of a goods shelf by benefiting from the small size of the goods shelf transportation unmanned vehicle, and then the goods shelf is lifted up and is driven to transport the goods shelf.

In view of the above, there is a need in the market for an automated device that allows unmanned vehicles to normally pass through a cargo hold to solve the above problems.

Disclosure of Invention

In order to overcome the defects that a goods shelf transportation unmanned vehicle is limited by too compact physical constitution, has the defects of low chassis and small moving wheels, the phenomena of uneven gaps between a goods lifter and the ground, easy up-and-down floating of a goods carrying bin and the like can prevent the unmanned vehicle from normally entering and exiting the goods carrying bin, the goods shelf for transportation by the unmanned vehicle is high and narrow, and the goods shelf is easy to shake and collapse due to too high gravity center when the goods shelf is transported by the goods carrying bin, the goods shelf is provided.

The technical scheme is as follows: a cargo elevator comprises an elevating component, a transportation component, a support platform and a control platform; the lifting assembly is connected with the transportation assembly; the lifting component is connected with the support platform; the transportation assembly is connected with the bracket platform; the console is connected with the support table; the transportation assembly is internally provided with a repairing and embedding unit which can repair and embed a gap between the device and the ground to enable the unmanned vehicle to smoothly pass through, the transportation assembly is internally provided with a goods cabin capable of loading goods shelves, two sides of the lifting assembly are provided with locking units capable of locking the goods cabin to ensure that the goods cabin cannot move up and down, the transportation assembly is internally provided with a blocking and protecting unit capable of fixing the goods shelves back and forth, and the lifting assembly is internally provided with a lead screw capable of driving the goods cabin to lift the goods shelves;

the lifting assembly comprises a main control motor, a speed control machine part, a first straight gear, an electric slider, a second straight gear, a third straight gear, a first rotating shaft, a fourth straight gear, a first driving wheel, a second rotating shaft, a second driving wheel, a third driving wheel, a fourth driving wheel, a fifth straight gear, a third rotating shaft, a fifth driving wheel, a fourth rotating shaft, a sixth driving wheel, a seventh driving wheel, a sixth straight gear, a fifth rotating shaft, an eighth driving wheel, a limiting plate, a locking unit, a sixth rotating shaft, a first bevel gear, a screw rod, a second bevel gear, a limiting rod and a lifting straight gear; the main control motor is fixedly connected with the support platform; the speed control part is fixedly connected with the support table; the output shaft of the main control motor is fixedly connected with the input shaft of the speed control machine part; the first straight gear is fixedly connected with an output shaft of the speed control machine part; on one side of the speed control part, an electric slide block is connected with the bracket platform in a sliding way; the second straight gear is rotationally connected with one side of the electric slide block through a rotating shaft; on one side of the second straight gear, a third straight gear rotating shaft is rotatably connected with the other side of the electric sliding block; on one side of the electric sliding block, a first rotating shaft is rotatably connected with the support platform; the fourth straight gear and the first driving wheel are fixedly connected with the first rotating shaft; when two sides of the second straight gear are simultaneously meshed with the first straight gear and the fourth straight gear, the second straight gear and the fourth straight gear rotate; when the second straight gear is not meshed with the first straight gear and the fourth straight gear, the second straight gear and the fourth straight gear do not rotate; the second rotating shaft is rotatably connected with the support platform below the first rotating shaft; the second transmission wheel, the third transmission wheel, the fourth transmission wheel and the fifth straight gear are fixedly connected with the second rotating shaft; the first driving wheel is in transmission connection with the second driving wheel through a belt; on one side of the second rotating shaft, a third rotating shaft is rotatably connected with the support table; the fifth driving wheel is fixedly connected with the third rotating shaft; the third driving wheel is in transmission connection with the fifth driving wheel through a belt; a fourth rotating shaft is rotatably connected with the support platform below the second rotating shaft; the sixth driving wheel, the seventh driving wheel and the sixth straight gear are fixedly connected with the fourth rotating shaft; the fourth transmission wheel is in transmission connection with the sixth transmission wheel through a belt; on one side of the fourth rotating shaft, the fifth rotating shaft is rotatably connected with the support platform; the eighth driving wheel is fixedly connected with the fifth rotating shaft; the seventh driving wheel is in transmission connection with the eighth driving wheel through a belt; four groups of limiting plates are fixedly connected with the support platform respectively above the second rotating shaft, the third rotating shaft, the fourth rotating shaft and the fifth rotating shaft; on two sides of each group of limiting plates, a second rotating shaft, a third rotating shaft, a fourth rotating shaft and a fifth rotating shaft are respectively connected with two groups of locking units; the eight groups of locking units are connected with the support platform; on one side of the main control motor, a sixth rotating shaft is rotatably connected with the support table; two groups of first bevel gears are fixedly connected with two ends of the sixth rotating shaft respectively; a lifting straight gear is fixedly connected with the sixth rotating shaft between the two groups of first bevel gears; when two sides of the third straight gear are simultaneously meshed with the first straight gear and the lifting straight gear, the third straight gear and the lifting straight gear rotate; when the third straight gear is not meshed with the first straight gear and the lifting straight gear, the third straight gear and the lifting straight gear do not rotate; two groups of screw rods are rotatably connected with the support platform on two sides of the sixth rotating shaft; the two groups of second bevel gears are fixedly connected with the corresponding group of screw rods respectively; each group of first bevel gears is meshed with a corresponding group of second bevel gears; four groups of limiting rods are respectively rotatably connected with the support platform at two sides of each group of screw rods; the sixth straight gear, the screw rod and the limiting rod are all connected with the transportation assembly;

the locking unit comprises a shaft sleeve, a push plate, a sliding locking block and a return spring; the second rotating shaft, the third rotating shaft, the fourth rotating shaft and the fifth rotating shaft are fixedly connected with the shaft sleeves of the two groups of locking units respectively; two groups of push plates are fixedly connected on the surfaces of the surrounding shaft sleeves; the sliding locking block is connected with the support platform in a sliding manner above the shaft sleeve; two groups of reset springs are fixedly connected with two sides of the sliding locking block respectively; each group of reset springs is fixedly connected with the support platform;

the repairing and embedding unit comprises a first spring telescopic rod, an embedding plate, a support sliding block and a second spring telescopic rod; the seventh rotating shaft and the ninth rotating shaft are fixedly connected with the two groups of first spring telescopic rods respectively; each group of first spring telescopic rods are in transmission connection with the clamping plate through a rotating shaft; on one side between the two groups of first spring telescopic rods, the two groups of support sliding blocks are in sliding connection with the support platform; two ends of the two groups of second spring telescopic rods are fixedly connected with the bracket sliding block and the clamping plate respectively;

the blocking and protecting unit comprises a tenth rotating shaft, a fourth bevel gear, an eleventh driving wheel, an eleventh rotating shaft, a twelfth driving wheel, a tenth straight gear, a thirteenth driving wheel, a twelfth rotating shaft, an eleventh straight gear, a sleeve plate, a blocking rod, a thirteenth rotating shaft, a fourteenth driving wheel and a twelfth straight gear; the tenth rotating shaft is rotatably connected with the freight bin; the fourth bevel gear and the eleventh driving wheel are fixedly connected with the tenth rotating shaft; the fourth bevel gears are meshed with a group of corresponding third bevel gears; the eleventh rotating shaft is rotatably connected with the freight bin above the tenth rotating shaft; the twelfth transmission wheel, the tenth straight gear and the thirteenth transmission wheel are fixedly connected with the eleventh rotating shaft; the eleventh transmission wheel is in transmission connection with the twelfth transmission wheel through a belt; a thirteenth rotating shaft is rotatably connected with the freight bin above the eleventh rotating shaft; the fourteenth driving wheel and the twelfth straight gear are fixedly connected with the thirteenth rotating shaft; the thirteenth driving wheel is in transmission connection with the fourteenth driving wheel through a belt; the two groups of twelfth rotating shafts are respectively arranged on one sides of the eleventh rotating shaft and one side of the thirteenth rotating shaft and are in rotating connection with the freight bin; the two groups of eleventh straight gears are fixedly connected with the corresponding group of twelfth rotating shafts respectively; the tenth straight gear and the twelfth straight gear are respectively meshed with a corresponding group of eleventh straight gears; on one side of the eleventh straight gear, two groups of sleeve plates are fixedly connected with one corresponding group of twelfth rotating shafts respectively; the eight groups of stop levers are respectively and fixedly connected with one side of the two groups of sleeve plates. Preferably, the transportation assembly comprises a transportation bin, a seventh rotating shaft, a seventh straight gear, a ninth transmission wheel, an eighth rotating shaft, a tenth transmission wheel, an eighth straight gear, a third bevel gear, a ninth rotating shaft, a ninth straight gear, an embedding supplementing unit, a blocking and protecting unit and a laser positioning plate; two sides of the freight cabin are respectively connected with the two groups of limiting rods in a sliding manner; two sides of the freight cabin are respectively connected with a group of screw rods in a rotating way; the seventh rotating shaft is rotatably connected with the bottom end of the freight cabin; the seventh straight gear and the ninth transmission wheel are fixedly connected with the seventh rotating shaft; the seventh straight gear is meshed with the sixth straight gear; on one side of the seventh rotating shaft, the eighth rotating shaft is rotatably connected with the freight bin; the tenth transmission wheel and the eighth straight gear are fixedly connected with the eighth rotating shaft; the ninth driving wheel is in transmission connection with the tenth driving wheel through a belt; two groups of third bevel gears are fixedly connected with two ends of the eighth rotating shaft respectively; on one side of the eighth rotating shaft, the ninth rotating shaft is rotatably connected with the freight bin; the ninth straight gear is fixedly connected with the ninth rotating shaft; the eighth straight gear is meshed with the ninth straight gear; two groups of embedding units are respectively connected with the two sides of the freight bin on the two sides of the eighth rotating shaft; the seventh rotating shaft and the ninth rotating shaft are respectively connected with a corresponding group of complementary embedding units; two groups of blocking and protecting units are connected with the freight cabin at two ends of the eighth rotating shaft; each group of blocking and protecting units is connected with a corresponding group of third bevel gears; six groups of laser positioning plates are fixedly connected on the freight warehouse between the two groups of blocking and protecting units.

Preferably, the cargo compartment is provided with a slot corresponding to the sliding lock block on two sides of the two groups of the complementary embedding units.

Preferably, one side of the top end of the clamping plate is designed to be a tangent plane, and one side of the bottom plate of the freight cabin is designed to be a reverse tangent plane corresponding to the clamping plate.

The invention has the beneficial effects that: 1. the unmanned vehicle has the advantages that the defects that the goods shelf transportation unmanned vehicle is limited by too compact physical constitution, has the defects of low chassis and small moving wheels, the phenomena of uneven gaps between the goods lifter and the ground, easy up-and-down floating of the goods carrying bin and the like can prevent the unmanned vehicle from normally entering and exiting the goods carrying bin, the goods shelf for the unmanned vehicle transportation is high and narrow, and the phenomenon of shaking and collapsing can easily occur due to too high gravity center when the goods shelf is transported by the goods carrying bin;

2. the device of the invention is provided with: when the device is used, the device is installed and the support platform is kept stable, the power supply is connected externally, the control console adjusting device is regulated and controlled, then the conveying assembly performs repairing embedding on a gap between the device and the ground, so that the unmanned vehicle can smoothly pass through, meanwhile, the lifting assembly locks the conveying assembly, so that the unmanned vehicle unloads in the conveying assembly, so that the conveying assembly cannot move up and down, then the unmanned vehicle positioned on one layer sequentially drags the goods shelf to enter the conveying assembly from one side of the device, places the goods shelf at the corresponding position in the conveying assembly, then releases the goods shelf and drives the conveying assembly out from the other side of the device, then the conveying assembly performs front and back fixing on the goods shelf, the lifting assembly drives the conveying assembly to convey the goods shelf to the two layers, then the conveying assembly performs repairing embedding on the gap between the device and the ground, and simultaneously the lifting assembly locks the conveying assembly, the unmanned vehicle positioned on the second floor can smoothly enter the transportation assembly to transport goods away;

3. the invention realizes the lifting and conveying work of the goods shelf which is carried by the unmanned vehicle, the gap between the device and the ground is embedded and the goods carrying bin is locked, a flat road surface is provided for the unmanned vehicle to pass through, the goods shelf placed in the device can be fixed front and back, and the goods shelf is prevented from inclining and collapsing due to the shaking of the goods carrying bin in the moving process.

Drawings

FIG. 1 is a schematic perspective view of a first embodiment of the present invention;

FIG. 2 is a schematic perspective view of a second embodiment of the present invention;

FIG. 3 is a third perspective view of the present invention;

FIG. 4 is a perspective view of the lift assembly of the present invention;

FIG. 5 is a schematic view of a first partial perspective view of the lift assembly of the present invention;

FIG. 6 is a schematic view of a second partial perspective view of the lift assembly of the present invention;

FIG. 7 is a schematic view of a partial V-zone of the lift assembly of the present invention;

FIG. 8 is a schematic perspective view of a locking unit of the present invention;

FIG. 9 is a perspective view of the transport assembly of the present invention;

FIG. 10 is a partial perspective view of the transport assembly of the present invention;

FIG. 11 is a schematic perspective view of the cargo compartment of the present invention;

FIG. 12 is a schematic perspective view of a complementary embedding unit according to the present invention;

FIG. 13 is a schematic perspective view of a retention plate according to the present invention;

fig. 14 is a schematic perspective view of a guard unit according to the present invention.

Description of reference numerals: 1_ lifting assembly, 2_ transporting assembly, 3_ rack table, 4_ console table, 101_ main control motor, 102_ speed control mechanism, 103_ first spur gear, 104_ electric slider, 105_ second spur gear, 106_ third spur gear, 107_ first rotating shaft, 108_ fourth spur gear, 109_ first driving wheel, 110_ second rotating shaft, 111_ second driving wheel, 112_ third driving wheel, 113_ fourth driving wheel, 114_ fifth spur gear, 115_ third rotating shaft, 116_ fifth driving wheel, 117_ fourth rotating shaft, 118_ sixth driving wheel, 119_ seventh driving wheel, 120_ sixth spur gear, 121_ fifth rotating shaft, 122_ eighth driving wheel, 123_ limit plate, 124_ locking unit, 125_ sixth rotating shaft, 126_ first bevel gear, 127_ second bevel screw, 128_ gear, 129_ limit rod, 130_ lifting gear, 01_ shaft sleeve, 12402_ push plate, 12403_ slide lock block, 12404_ return spring, 201_ cargo bin, 202_ seventh rotating shaft, 203_ seventh spur gear, 204_ ninth driving wheel, 205_ eighth rotating shaft, 206_ tenth driving wheel, 207_ eighth spur gear, 208_ third bevel gear, 209_ ninth rotating shaft, 210_ ninth spur gear, 211_ complementary insertion unit, 212_ guard unit, 213_ laser positioning plate, 21101_ first telescopic spring rod, 21102_ embedded plate, 21103_ cradle slider, 21104_ second telescopic spring rod, 21201_ tenth rotating shaft, 212002 _ fourth bevel gear, 21203_ eleventh driving wheel, 21204_ eleventh rotating shaft, 21205_ twelfth driving wheel, 21206_ tenth spur gear, 21207_ thirteenth driving wheel, 21208_ twelfth rotating shaft, 21209_ eleventh spur gear, 21210_ race plate, 21211_ stop rod, 21212_ thirteenth rotating shaft, 21213_ fourteenth driving wheel, 21214_ twelfth spur gear.

Detailed Description

The invention is further described with reference to the following figures and detailed description.

Example 1

A cargo lift, as shown in fig. 1-14, comprising a lifting assembly 1, a transportation assembly 2, a support stand 3 and a control stand 4; the lifting assembly 1 is connected with the transportation assembly 2; the lifting component 1 is connected with the support table 3; the transportation component 2 is connected with the bracket platform 3; the console 4 is connected with the stand table 3.

When the device is used, the device is installed firstly, the support table 3 is kept stable, the power supply is connected externally, the control table 4 is regulated and controlled to regulate the device, then the transportation component 2 is used for embedding the gap between the device and the ground, so that the unmanned vehicle can pass through smoothly, meanwhile, the transportation component 2 is locked by the lifting component 1, so that the unmanned vehicle unloads in the transportation component 2, so that the transportation component 2 can be ensured not to move up and down, then the unmanned vehicle positioned at one layer sequentially drags the goods shelf to enter the transportation component 2 from one side of the device, and places the goods shelf at the corresponding position in the transportation component 2, then the unmanned vehicle loosens the goods shelf and drives the transportation component 2 out of the transportation component 2 from the other side of the device, then the goods shelf is fixed back and forth by the transportation component 2, the lifting component 1 drives the transportation component 2 to convey the goods shelf to two layers, and then the transportation component 2 is used for embedding the gap between the device and the ground, meanwhile, the lifting assembly 1 locks the transportation assembly 2, so that the unmanned vehicle on the second floor can smoothly enter the transportation assembly 2 to transport the goods away; the invention realizes the lifting and conveying work of the goods shelf which is carried by the unmanned vehicle, the gap between the device and the ground is embedded and the goods carrying bin is locked, a flat road surface is provided for the unmanned vehicle to pass through, the goods shelf placed in the device can be fixed front and back, and the goods shelf is prevented from inclining and collapsing due to the shaking of the goods carrying bin in the moving process.

The lifting assembly 1 comprises a main control motor 101, a speed control mechanism 102, a first straight gear 103, an electric slider 104, a second straight gear 105, a third straight gear 106, a first rotating shaft 107, a fourth straight gear 108, a first driving wheel 109, a second rotating shaft 110, a second driving wheel 111, a third driving wheel 112, a fourth driving wheel 113, a fifth straight gear 114, a third rotating shaft 115, a fifth driving wheel 116, a fourth rotating shaft 117, a sixth driving wheel 118, a seventh driving wheel 119, a sixth straight gear 120, a fifth rotating shaft 121, an eighth driving wheel 122, a limit plate 123, a locking unit 124, a sixth rotating shaft 125, a first bevel gear 126, a screw 127, a second bevel gear 128, a limit rod 129 and a lifting straight gear 130; the main control motor 101 is fixedly connected with the support table 3; the speed control part 102 is fixedly connected with the support table 3; the output shaft of the main control motor 101 is fixedly connected with the input shaft of the speed control machine member 102; the first straight gear 103 is fixedly connected with an output shaft of the speed control machine member 102; on one side of the speed control part 102, an electric slide block 104 is connected with the bracket table 3 in a sliding way; the second straight gear 105 is rotationally connected with one side of the electric slide block 104 through a rotating shaft; on one side of the second straight gear 105, the rotating shaft of the third straight gear 106 is rotatably connected with the other side of the electric sliding block 104; on one side of the electric slide block 104, a first rotating shaft 107 is rotatably connected with the bracket table 3; the fourth spur gear 108 and the first driving wheel 109 are fixedly connected with the first rotating shaft 107; when both sides of the second spur gear 105 are simultaneously engaged with the first spur gear 103 and the fourth spur gear 108, the second spur gear 105 and the fourth spur gear 108 rotate; when the second spur gear 105 is not engaged with the first spur gear 103 and the fourth spur gear 108, the second spur gear 105 and the fourth spur gear 108 do not rotate; below the first rotating shaft 107, a second rotating shaft 110 is rotatably connected with the support table 3; the second transmission wheel 111, the third transmission wheel 112, the fourth transmission wheel 113 and the fifth straight gear 114 are all fixedly connected with the second rotating shaft 110; the first driving wheel 109 is in driving connection with a second driving wheel 111 through a belt; on the side of the second rotating shaft 110, a third rotating shaft 115 is rotatably connected with the support table 3; the fifth driving wheel 116 is fixedly connected with the third rotating shaft 115; the third driving wheel 112 is in driving connection with a fifth driving wheel 116 through a belt; below the second rotating shaft 110, a fourth rotating shaft 117 is rotatably connected with the support table 3; the sixth driving wheel 118, the seventh driving wheel 119 and the sixth straight gear 120 are all fixedly connected with the fourth rotating shaft 117; the fourth driving wheel 113 is in driving connection with a sixth driving wheel 118 through a belt; on the side of the fourth rotating shaft 117, the fifth rotating shaft 121 is rotatably connected with the support table 3; the eighth driving wheel 122 is fixedly connected with the fifth rotating shaft 121; the seventh driving wheel 119 is in driving connection with the eighth driving wheel 122 through a belt; four groups of limiting plates 123 are fixedly connected with the support table 3 above the second rotating shaft 110, the third rotating shaft 115, the fourth rotating shaft 117 and the fifth rotating shaft 121 respectively; on both sides of each set of limiting plate 123, the second rotating shaft 110, the third rotating shaft 115, the fourth rotating shaft 117 and the fifth rotating shaft 121 are respectively connected with two sets of locking units 124; the eight groups of locking units 124 are all connected with the support table 3; on one side of the main control motor 101, the sixth rotating shaft 125 is rotatably connected with the support table 3; two groups of first bevel gears 126 are fixedly connected with two ends of the sixth rotating shaft 125 respectively; a lifting straight gear 130 is fixedly connected with the sixth rotating shaft 125 between the two groups of first bevel gears 126; when both sides of the third spur gear 106 are simultaneously engaged with the first spur gear 103 and the lifting spur gear 130, the third spur gear 106 and the lifting spur gear 130 are rotated; when the third spur gear 106 is not engaged with the first spur gear 103 and the lifting spur gear 130, the third spur gear 106 and the lifting spur gear 130 are not rotated; two groups of screw rods 127 are rotatably connected with the support table 3 on two sides of the sixth rotating shaft 125; the two groups of second bevel gears 128 are fixedly connected with the corresponding group of screw rods 127 respectively; each set of first bevel gears 126 is engaged with a corresponding set of second bevel gears 128; four sets of limiting rods 129 are respectively rotatably connected with the support table 3 at two sides of each set of screw rod 127; the sixth spur gear 120, the lead screw 127 and the limit rod 129 are all connected with the transport assembly 2.

Before use, four groups of limit plates 123 are respectively embedded into the bottom surfaces of the first layer and the second layer, and the top ends of the limit plates 123 are flush with the bottom surfaces, then the output shaft of the main control motor 101 drives the input shaft of the speed control mechanism 102 to rotate, the output shaft of the speed control mechanism 102 drives the first spur gear 103 to rotate, then the electric slider 104 simultaneously drives the second spur gear 105 and the third spur gear 106 to move, so that the second spur gear 105 is meshed with the fourth spur gear 108 and drives the fourth spur gear 108 to rotate, simultaneously the second spur gear 105 is meshed with the fourth spur gear 108 and drives the first rotating shaft 107 to rotate, the first rotating shaft 107 drives the first driving wheel 109 to rotate, the first driving wheel 109 drives the second rotating shaft 110 to rotate through the belt driving the second driving wheel 111, the second rotating shaft 110 simultaneously drives the third driving wheel 112, the fourth driving wheel 113 and the fifth spur gear 114 to rotate, the third driving wheel 112 drives the fifth driving wheel 116 to rotate through the belt driving the third rotating shaft 115, meanwhile, the fourth driving wheel 113 drives the fourth rotating shaft 117 to rotate by driving the sixth driving wheel 118 by a belt, the fourth rotating shaft 117 drives the seventh driving wheel 119 and the sixth spur gear 120 to rotate simultaneously, the seventh driving wheel 119 drives the fifth rotating shaft 121 to rotate by driving the eighth driving wheel 122 by a belt, the second rotating shaft 110, the third rotating shaft 115, the fourth rotating shaft 117 and the fifth rotating shaft 121 simultaneously drive the locking units 124 connected with the seventh driving wheel to lock two sides of the freight warehouse 201 of the transportation assembly 2, so that the freight warehouse 201 cannot move up and down, simultaneously, the sixth spur gear 120 drives the transportation assembly 2 to perform embedding work on a gap between the device and the ground, so that the unmanned vehicle can smoothly enter the freight warehouse 201, the unmanned vehicle on the first layer can drive out of the device after the unmanned vehicle finishes unloading, then the output shaft of the main control motor 101 reversely rotates to reset the locking units 124 and the transportation assembly 2, and then the electric slider 104 simultaneously drives the second spur gear 105 and the third spur gear 106 to reversely move, the second spur gear 105 is separated from the fourth spur gear 108, the third spur gear 106 is meshed with the lifting spur gear 130 to drive the sixth rotating shaft 125 to rotate, the sixth rotating shaft 125 drives the first bevel gear 126 to rotate, the first bevel gear 126 is meshed with the second bevel gear 128 to drive the screw rod 127 to rotate, the screw rod 127 drives the transportation assembly 2 to move upwards along the limiting rod 129, so that the transportation assembly 2 transports the goods shelf to the second layer, then the transportation assembly 2 is locked according to the working principle, the rotating fifth spur gear 114 drives the transportation assembly 2 to perform embedding work on a gap between the device and the ground, and the unmanned vehicle on the second layer can carry the goods shelf away; this subassembly has accomplished and has carried out locking work to the both sides of freight warehouse 201 to accomplished control transportation subassembly 2 and carried out the benefit to inlay the work to the gap between device and the ground.

The transportation assembly 2 comprises a transportation bin 201, a seventh rotating shaft 202, a seventh spur gear 203, a ninth transmission wheel 204, an eighth rotating shaft 205, a tenth transmission wheel 206, an eighth spur gear 207, a third bevel gear 208, a ninth rotating shaft 209, a ninth spur gear 210, a complementary embedding unit 211, a blocking and protecting unit 212 and a laser positioning plate 213; two sides of the freight cabin 201 are respectively connected with the two groups of limiting rods 129 in a sliding manner; two sides of the freight cabin 201 are respectively connected with a group of screw rods 127 in a screwing way; the seventh rotating shaft 202 is rotatably connected with the bottom end of the freight bin 201; the seventh straight gear 203 and the ninth transmission wheel 204 are both fixedly connected with the seventh rotating shaft 202; the seventh spur gear 203 is meshed with the sixth spur gear 120; on the seventh rotating shaft 202 side, an eighth rotating shaft 205 is rotatably connected with the freight container 201; the tenth transmission wheel 206 and the eighth spur gear 207 are both fixedly connected with the eighth rotating shaft 205; the ninth transmission wheel 204 is in transmission connection with the tenth transmission wheel 206 through a belt; two groups of third bevel gears 208 are fixedly connected with two ends of the eighth rotating shaft 205 respectively; on the eighth rotating shaft 205 side, a ninth rotating shaft 209 is rotatably connected with the freight container 201; the ninth spur gear 210 is fixedly connected with the ninth rotating shaft 209; the eighth spur gear 207 is engaged with the ninth spur gear 210; two groups of complementary embedding units 211 are respectively connected with two sides of the freight bin 201 on two sides of the eighth rotating shaft 205; the seventh rotating shaft 202 and the ninth rotating shaft 209 are respectively connected with a corresponding group of complementary embedding units 211; at both ends of the eighth rotating shaft 205, two groups of shielding units 212 are connected with the freight container 201; each group of guard units 212 is connected with a corresponding group of third bevel gears 208; between the two sets of retaining units 212, six sets of laser positioning plates 213 are fixed on the cargo compartment 201.

Firstly, the sixth spur gear 120 is meshed with the seventh spur gear 203 to drive the seventh rotating shaft 202 to rotate, the seventh rotating shaft 202 drives the ninth driving wheel 204 to rotate, the ninth driving wheel 204 drives the tenth driving wheel 206 to drive the eighth rotating shaft 205 to rotate through a belt, the eighth rotating shaft 205 simultaneously drives the eighth spur gear 207 and the third bevel gear 208 to rotate, the eighth spur gear 207 is meshed with the ninth spur gear 210 to drive the ninth rotating shaft 209 to rotate, the seventh rotating shaft 202 and the ninth rotating shaft 209 simultaneously drive the embedding units 211 connected with the seventh rotating shaft 202 to carry out embedding work on a gap between the device and the ground, simultaneously, the third bevel gear 208 drives the blocking and protecting units 212 to open, so that the unmanned vehicle can smoothly transport the goods shelves into the goods transportation bin 201 after the blocking rods 21211 in the blocking and protecting units 212 are upwards overturned for ninety degrees, and simultaneously, the laser positioning plates 213 position the unmanned vehicle, so that the goods shelves can be neatly arranged in the goods transportation bin 201 by the unmanned vehicle, then the sixth spur gear 120 is meshed with the seventh spur gear 203 to drive the seventh rotating shaft 202 to rotate reversely, so that the embedding repairing unit 211 is reset, meanwhile, the blocking rod 21211 in the blocking unit 212 is turned downwards by ninety degrees to fix the goods shelf front and back, then when the screw rod 127 rotates, the goods transportation bin 201 moves upwards to a second layer along the thread of the screw rod 127 along the limiting rod 129, then the fifth spur gear 114 is meshed with the seventh spur gear 203 to drive the seventh rotating shaft 202 to rotate, and the embedding repairing work and the opening work of the blocking unit 212 are carried out according to the above manner; this subassembly has accomplished and has carried out the gap between device and the ground to mend and inlay work, makes unmanned car can pass through freight warehouse 201 smoothly to accomplished and carried out fixing work to goods shelves in carrying out the transportation to goods shelves.

The locking unit 124 comprises a shaft sleeve 12401, a push plate 12402, a sliding locking block 12403 and a return spring 12404; the second rotating shaft 110, the third rotating shaft 115, the fourth rotating shaft 117 and the fifth rotating shaft 121 are respectively fixedly connected with shaft sleeves 12401 of the two groups of locking units 124; two groups of push plates 12402 are fixedly connected to the surface of the surrounding shaft sleeve 12401; above the shaft sleeve 12401, a sliding lock 12403 is connected with the support table 3 in a sliding manner; two groups of return springs 12404 are respectively fixedly connected with two sides of the sliding locking block 12403; each group of reset springs 12404 is fixedly connected with the support table 3.

Firstly, the shaft sleeve 12401 connected with the second rotating shaft 110, the third rotating shaft 115, the fourth rotating shaft 117 and the fifth rotating shaft 121 is driven to rotate, the shaft sleeve 12401 drives the push plate 12402 to rotate, the push plate 12402 pushes the sliding lock piece 12403 to enter the groove in the side face of the freight cabin 201 along the support table 3, so that the freight cabin 201 is locked, meanwhile, the return spring 12404 is stretched, after the unmanned vehicle leaves the freight cabin 201, the shaft sleeve 12401 continues to drive the push plate 12402 to rotate, so that the push plate 12402 leaves the sliding lock piece 12403, meanwhile, the return spring 12404 drives the sliding lock piece 12403 to reset, so that the freight cabin 201 is unlocked.

The embedding unit 211 comprises a first spring telescopic rod 21101, an embedding plate 21102, a bracket sliding block 21103 and a second spring telescopic rod 21104; the seventh rotating shaft 202 and the ninth rotating shaft 209 are fixedly connected with the two groups of first spring telescopic rods 21101 respectively; each group of first spring telescopic rods 21101 is in transmission connection with the clamping plate 21102 through a rotating shaft; on one side between the two groups of first spring telescopic rods 21101, two groups of bracket sliding blocks 21103 are in sliding connection with the bracket platform 3; two ends of the two groups of second spring telescopic rods 21104 are fixedly connected with the bracket sliding block 21103 and the clamping plate 21102 respectively.

Firstly, the seventh rotating shaft 202 and the ninth rotating shaft 209 drive the first spring telescopic rod 21101 connected with the seventh rotating shaft to rotate, the first spring telescopic rod 21101 drives the embedded plate 21102 to cling to the lateral tangent plane of the freight warehouse 201 through the rotating shafts to move upwards, meanwhile, the embedded plate 21102 drives the support slider 21103 to move outwards through the second spring telescopic rod 21104, so that the embedded plate 21102 is positioned between the bottom plate of the freight warehouse 201 and the limiting plate 123, meanwhile, the tangent plane of the embedded plate 21102 clings to the tangent plane of one side of the bottom plate of the freight warehouse 201 and is flush with the limiting plate 123, the top end of the embedded plate 21102, the top end of the bottom plate of the freight warehouse 201 and the top end of the limiting plate 123 form a flat plane, and an unmanned vehicle can smoothly pass through.

The shielding unit 212 includes a tenth rotation shaft 21201, a fourth bevel gear 2120, an eleventh driving wheel 21203, an eleventh rotation shaft 21204, a twelfth driving wheel 21205, a tenth spur gear 21206, a thirteenth driving wheel 21207, a twelfth rotation shaft 21208, an eleventh spur gear 21209, a sleeve plate 21210, a blocking rod 21211, a thirteenth rotation shaft 21212, a fourteenth driving wheel 21213 and a twelfth spur gear 21214; the tenth rotating shaft 21201 is rotatably connected with the freight container 201; the fourth bevel gear 21202 and the eleventh driving wheel 21203 are fixedly connected with the tenth rotating shaft 21201; the fourth bevel gear 21202 is meshed with a corresponding group of third bevel gears 208; above the tenth rotating shaft 21201, an eleventh rotating shaft 21204 is rotatably connected with the cargo bin 201; the twelfth driving wheel 21201, the tenth straight gear 21206 and the thirteenth driving wheel 21207 are fixedly connected with the eleventh rotating shaft 21204; the eleventh driving wheel 21203 is in driving connection with the twelfth driving wheel 21205 through a belt; above the eleventh rotating shaft 21204, the thirteenth rotating shaft 21212 is rotatably connected to the cargo compartment 201; a fourteenth driving wheel 21213 and a twelfth spur gear 21214 are fixedly connected with a thirteenth rotating shaft 21212; the thirteenth driving wheel 21207 is in driving connection with the fourteenth driving wheel 21213 through a belt; two groups of twelfth rotating shafts 21208 are respectively arranged at one side of the eleventh rotating shaft 21204 and one side of the thirteenth rotating shaft 21212 and are rotatably connected with the cargo transportation bin 201; the two groups of eleventh straight gears 21209 are fixedly connected with the corresponding group of twelfth rotating shafts 21208 respectively; the tenth spur gear 21206 and the twelfth spur gear 21214 are each engaged with a corresponding set of eleventh spur gears 21209; on one side of the eleventh spur gear 21209, two sets of sleeve plates 21210 are fixedly connected with a corresponding set of twelfth rotating shafts 21208 respectively; the eight sets of stop rods 21211 are fixedly connected to one side of the two sets of sleeve plates 21210.

First, the third bevel gear 208 engages the fourth bevel gear 2120 to drive the tenth rotating shaft 2120 to rotate, the tenth rotating shaft 2120 drives the eleventh driving wheel 21203 to rotate, the eleventh driving wheel 21203 drives the eleventh rotating shaft 21204 to rotate by the twelfth driving wheel 21205 through a belt, the eleventh rotating shaft 21204 drives the tenth spur gear 21206 and the thirteenth driving wheel 21207 to rotate at the same time, the thirteenth driving wheel 21207 drives the thirteenth rotating shaft 21212 to rotate by the fourteenth driving wheel 21213 through a belt, the thirteenth rotating shaft 21212 drives the twelfth spur gear 21214 to rotate, the tenth spur gear 21206 and the twelfth spur gear 21214 simultaneously engage the connected eleventh spur gear 21209 to drive the twelfth rotating shaft 21208 to rotate, the twelfth rotating shaft 21208 drives the blocking rod 21211 to turn right angle upwards through the sleeve 21210, so that the unmanned vehicle can smoothly transport the goods shelf into the goods transportation bin 201, then the third bevel gear 208 engages the fourth bevel gear 2120 to drive the tenth rotating shaft 21201 to rotate in the opposite direction, the sleeve 21210 drives the blocking rod 21211 to turn right angle downwards, so that the blocking rod 21211 fixes the front and the back of the shelf.

On both sides of the two sets of complementary-embedding units 211, the cargo compartment 201 is provided with a slot corresponding to the sliding lock 12403.

The slide lock 12403 can be made to lock the freight compartment 201.

The top side of the retention plate 21102 is a tangent plane design and the floor side of the shipping container 201 has a reverse tangent plane design corresponding to the retention plate 21102.

The tangent plane of the clamping plate 21102 can be tightly attached to the tangent plane of one side of the bottom plate of the freight compartment 201 and is flush with the limiting plate 123.

Although the present invention has been described in detail with reference to the above embodiments, it will be apparent to those skilled in the art from this disclosure that various changes or modifications can be made herein without departing from the principles and spirit of the invention as defined by the appended claims. Therefore, the detailed description of the embodiments of the present disclosure is to be construed as merely illustrative, and not limitative of the remainder of the disclosure, but rather to limit the scope of the disclosure to the full extent set forth in the appended claims.

Claims

1. A cargo lifter comprises a control console (4), and is characterized by further comprising a lifting assembly (1), a transportation assembly (2) and a support platform (3); the lifting component (1) is connected with the transportation component (2); the lifting component (1) is connected with the support platform (3); the transportation component (2) is connected with the support table (3); the console (4) is connected with the support table (3); a repairing and embedding unit (211) capable of repairing and embedding a gap between the device and the ground to enable the unmanned vehicle to pass through smoothly is arranged in the transportation assembly (2), a goods bin (201) capable of loading goods shelves is arranged in the transportation assembly (2), locking units (124) capable of locking the goods bin (201) to ensure that the goods bin cannot move up and down are arranged on two sides of the lifting assembly (1), a blocking and protecting unit (212) capable of fixing the goods shelves back and forth is arranged in the transportation assembly (2), and a lead screw (127) capable of driving the goods bin (201) to lift the goods shelves is arranged in the lifting assembly (1);

the lifting component (1) comprises a main control motor (101), a speed control machine member (102), a first straight gear (103), an electric slider (104), a second straight gear (105), a third straight gear (106), a first rotating shaft (107), a fourth straight gear (108), a first transmission wheel (109), a second rotating shaft (110), a second transmission wheel (111), a third transmission wheel (112), a fourth transmission wheel (113), a fifth straight gear (114) and a third rotating shaft (115), a fifth transmission wheel (116), a fourth rotating shaft (117), a sixth transmission wheel (118), a seventh transmission wheel (119), a sixth straight gear (120), a fifth rotating shaft (121), an eighth transmission wheel (122), a limit plate (123), a locking unit (124), a sixth rotating shaft (125), a first bevel gear (126), a screw rod (127), a second bevel gear (128), a limit rod (129) and a lifting straight gear (130); the main control motor (101) is fixedly connected with the support table (3); the speed control part (102) is fixedly connected with the support table (3); the output shaft of the main control motor (101) is fixedly connected with the input shaft of the speed control machine part (102); the first straight gear (103) is fixedly connected with an output shaft of the speed control machine member (102); on one side of the speed control part (102), an electric slide block (104) is connected with the support table (3) in a sliding way; the second straight gear (105) is rotationally connected with one side of the electric slide block (104) through a rotating shaft; on one side of the second straight gear (105), a rotating shaft of the third straight gear (106) is rotationally connected with the other side of the electric sliding block (104); on one side of the electric slide block (104), a first rotating shaft (107) is rotatably connected with the support table (3); the fourth straight gear (108) and the first driving wheel (109) are fixedly connected with the first rotating shaft (107); when two sides of the second straight gear (105) are simultaneously meshed with the first straight gear (103) and the fourth straight gear (108), the second straight gear (105) and the fourth straight gear (108) rotate; when the second spur gear (105) is not meshed with the first spur gear (103) and the fourth spur gear (108), the second spur gear (105) and the fourth spur gear (108) do not rotate; a second rotating shaft (110) is rotatably connected with the support table (3) below the first rotating shaft (107); the second transmission wheel (111), the third transmission wheel (112), the fourth transmission wheel (113) and the fifth straight gear (114) are fixedly connected with the second rotating shaft (110); the first driving wheel (109) is in driving connection with the second driving wheel (111) through a belt; on one side of the second rotating shaft (110), a third rotating shaft (115) is rotatably connected with the support table (3); the fifth driving wheel (116) is fixedly connected with the third rotating shaft (115); the third driving wheel (112) is in transmission connection with a fifth driving wheel (116) through a belt; a fourth rotating shaft (117) is rotatably connected with the support table (3) below the second rotating shaft (110); a sixth driving wheel (118), a seventh driving wheel (119) and a sixth straight gear (120) are fixedly connected with the fourth rotating shaft (117); the fourth driving wheel (113) is in driving connection with a sixth driving wheel (118) through a belt; on one side of the fourth rotating shaft (117), a fifth rotating shaft (121) is rotatably connected with the support table (3); the eighth driving wheel (122) is fixedly connected with the fifth rotating shaft (121); the seventh driving wheel (119) is in driving connection with the eighth driving wheel (122) through a belt; the four groups of limiting plates (123) are fixedly connected with the support platform (3) above the second rotating shaft (110), the third rotating shaft (115), the fourth rotating shaft (117) and the fifth rotating shaft (121) respectively; on two sides of each group of limiting plates (123), a second rotating shaft (110), a third rotating shaft (115), a fourth rotating shaft (117) and a fifth rotating shaft (121) are respectively connected with two groups of locking units (124); the eight groups of locking units (124) are connected with the support table (3); on one side of the main control motor (101), a sixth rotating shaft (125) is rotatably connected with the support table (3); two groups of first bevel gears (126) are fixedly connected with two ends of the sixth rotating shaft (125) respectively; a lifting straight gear (130) is fixedly connected with a sixth rotating shaft (125) between the two groups of first bevel gears (126); when two sides of the third straight gear (106) are simultaneously meshed with the first straight gear (103) and the lifting straight gear (130), the third straight gear (106) and the lifting straight gear (130) rotate; when the third straight gear (106) is not meshed with the first straight gear (103) and the lifting straight gear (130), the third straight gear (106) and the lifting straight gear (130) do not rotate; two groups of screw rods (127) are rotatably connected with the support platform (3) on two sides of the sixth rotating shaft (125); the two groups of second bevel gears (128) are fixedly connected with the corresponding group of screw rods (127) respectively; each set of first bevel gears (126) is meshed with a corresponding set of second bevel gears (128); four groups of limiting rods (129) are respectively connected with the support platform (3) in a rotating way on two sides of each group of screw rods (127); the sixth straight gear (120), the screw rod (127) and the limiting rod (129) are all connected with the transportation assembly (2);

the locking unit (124) comprises a shaft sleeve (12401), a push plate (12402), a sliding locking block (12403) and a return spring (12404); the second rotating shaft (110), the third rotating shaft (115), the fourth rotating shaft (117) and the fifth rotating shaft (121) are fixedly connected with shaft sleeves (12401) of the two groups of locking units (124) respectively; two groups of push plates (12402) are fixedly connected on the surface of the surrounding shaft sleeve (12401); a sliding locking block (12403) is connected with the support table (3) in a sliding way above the shaft sleeve (12401); two groups of reset springs (12404) are respectively fixedly connected with two sides of the sliding locking block (12403); each group of reset springs (12404) is fixedly connected with the support platform (3);

the embedding unit (211) comprises a first spring telescopic rod (21101), an embedding plate (21102), a bracket sliding block (21103) and a second spring telescopic rod (21104); the seventh rotating shaft (202) and the ninth rotating shaft (209) are fixedly connected with two groups of first spring telescopic rods (21101) respectively; each group of first spring telescopic rods (21101) is in transmission connection with the clamping plate (21102) through a rotating shaft; on one side between the two groups of first spring telescopic rods (21101), the two groups of bracket sliding blocks (21103) are in sliding connection with the bracket platform (3); two ends of the two groups of second spring telescopic rods (21104) are fixedly connected with the bracket sliding block (21103) and the clamping plate (21102) respectively;

the blocking and protecting unit (212) comprises a tenth rotating shaft (21201), a fourth bevel gear (2120), an eleventh driving wheel (21203), an eleventh rotating shaft (21204), a twelfth driving wheel (21205), a tenth straight gear (21206), a thirteenth driving wheel (21207), a twelfth rotating shaft (21208), an eleventh straight gear (21209), a sleeve plate (21210), a blocking rod (21211), a thirteenth rotating shaft (21212), a fourteenth driving wheel (21213) and a twelfth straight gear (21214); the tenth rotating shaft (21201) is rotatably connected with the freight cabin (201); the fourth bevel gear (21202) and the eleventh driving wheel (21203) are fixedly connected with the tenth rotating shaft (21201); the fourth bevel gears (21202) are meshed with a corresponding group of third bevel gears (208); the eleventh rotating shaft (21204) is rotatably connected with the freight cabin (201) above the tenth rotating shaft (21201); the twelfth driving wheel (21205), the tenth straight gear (21206) and the thirteenth driving wheel (21207) are fixedly connected with the eleventh rotating shaft (21204); the eleventh driving wheel (21203) is in transmission connection with the twelfth driving wheel (21205) through a belt; the thirteenth rotating shaft (21212) is rotatably connected with the freight cabin (201) above the eleventh rotating shaft (21204); a fourteenth driving wheel (21213) and a twelfth straight gear (21214) are fixedly connected with a thirteenth rotating shaft (21212); the thirteenth driving wheel (21207) is in transmission connection with the fourteenth driving wheel (21213) through a belt; the two groups of twelfth rotating shafts (21208) are respectively arranged at one side of the eleventh rotating shaft (21204) and one side of the thirteenth rotating shaft (21212) and are rotationally connected with the freight cabin (201); the two groups of eleventh straight gears (21209) are fixedly connected with the corresponding group of twelfth rotating shafts (21208); the tenth spur gear (21206) and the twelfth spur gear (21214) are respectively meshed with a corresponding group of eleventh spur gears (21209); on one side of the eleventh straight gear (21209), two groups of sleeve plates (21210) are fixedly connected with a corresponding group of twelfth rotating shafts (21208); eight groups of stop rods (21211) are respectively fixedly connected with one side of the two groups of sleeve plates (21210).

2. A cargo lift according to claim 1, characterized in that the transport assembly (2) comprises a cargo compartment (201), a seventh rotating shaft (202), a seventh spur gear (203), a ninth transmission wheel (204), an eighth rotating shaft (205), a tenth transmission wheel (206), an eighth spur gear (207), a third bevel gear (208), a ninth rotating shaft (209), a ninth spur gear (210), a complementary embedding unit (211), a blocking and protecting unit (212) and a laser positioning plate (213); two sides of the freight cabin (201) are respectively connected with two groups of limiting rods (129) in a sliding way; two sides of the freight cabin (201) are respectively connected with a group of screw rods (127) in a screwing way; the seventh rotating shaft (202) is rotatably connected with the bottom end of the freight bin (201); the seventh straight gear (203) and the ninth transmission wheel (204) are fixedly connected with the seventh rotating shaft (202); the seventh straight gear (203) is meshed with the sixth straight gear (120); on one side of the seventh rotating shaft (202), an eighth rotating shaft (205) is rotatably connected with the freight cabin (201); the tenth transmission wheel (206) and the eighth straight gear (207) are fixedly connected with the eighth rotating shaft (205); the ninth driving wheel (204) is in transmission connection with the tenth driving wheel (206) through a belt; two groups of third bevel gears (208) are fixedly connected with two ends of the eighth rotating shaft (205) respectively; on one side of the eighth rotating shaft (205), a ninth rotating shaft (209) is rotatably connected with the freight cabin (201); the ninth straight gear (210) is fixedly connected with the ninth rotating shaft (209); the eighth straight gear (207) is meshed with the ninth straight gear (210); two groups of embedding units (211) are respectively connected with two sides of the freight cabin (201) at two sides of the eighth rotating shaft (205); the seventh rotating shaft (202) and the ninth rotating shaft (209) are respectively connected with a corresponding group of complementary embedding units (211); two groups of blocking and protecting units (212) are connected with the freight bin (201) at two ends of the eighth rotating shaft (205); each group of guard units (212) is respectively connected with a corresponding group of third bevel gears (208); six groups of laser positioning plates (213) are fixedly connected on the freight cabin (201) between the two groups of blocking and protecting units (212).

3. A cargo lift according to claim 2, characterized in that the freight compartment (201) is provided with slots corresponding to the slide-locks (12403) on both sides of the two sets of complementary-insertion units (211), respectively.

4. A cargo lift according to claim 3, characterized in that the top side of the retention plate (21102) is of a tangential design and the floor side of the freight compartment (201) has a counter-tangential design corresponding to the retention plate (21102).