CN113844809A - A trade and hold in palm mechanism for commodity circulation is automatic - Google Patents

Abstract

The invention relates to the technical field of logistics automation, in particular to a tray replacing mechanism for logistics automation. The utility model provides a trade support mechanism for commodity circulation is automatic, including support frame, conveyer belt, the interior tray pile up neatly station, material baffle, material tray, delivery tray buttress pile up neatly station and delivery wagon in, the conveyer belt is all installed to both sides around the support frame, and the left side of conveyer belt is provided with the interior tray pile up neatly station, and the right side of the interior tray pile up neatly station is provided with material baffle, installs the material tray on the support frame of material baffle below, and the right side of support frame is provided with delivery tray buttress pile up neatly station. The invention has the beneficial effects that: this a trade support mechanism for commodity circulation is automatic, the delivery wagon that utilizes on the device shuttles back and forth between trade a set work and code wheel station to carry out the fast transport work of trading the support to the article, can still maintain original buttress shape when trading the tray, the level trades the dish and can not change original buttress shape direction, has promoted the availability factor of device.

Description

A trade and hold in palm mechanism for commodity circulation is automatic

Technical Field

The invention relates to the technical field of logistics automation, in particular to a tray replacing mechanism for logistics automation.

Background

With the development of the logistics industry, the technology of using stereoscopic warehouse automation to carry out warehouse-out and warehouse-in is gradually mature, objects are mainly transported by matching conveying equipment with a lifting mechanism and a tray assembly, but some problems still exist in the existing logistics consignment equipment when in use:

when classifying the bearing to the article, need carry out the bearing generally and transport, current bearing mode is usually through artifical or constitute through a plurality of drive assembly, it is more to consume the manpower on the one hand, on the other hand needs the cooperation of a plurality of drive parts just can accomplish the transport work at the in-process that uses, can not adjust according to the size of load moreover, be not convenient for automatic shutdown work when object weight is too big, the security is relatively poor, trade a set product singleness moreover, efficiency is lower.

Disclosure of Invention

The invention provides a tray replacing mechanism for logistics automation, aiming at the technical problems in the prior art, and solving the problems of low working efficiency and poor safety of some conventional logistics conveying devices in use.

The technical scheme for solving the technical problems is as follows: a tray changing mechanism for logistics automation comprises a support frame, a conveyor belt, an in-warehouse tray stacking station, a material baffle, a material tray, a delivery tray stack unstacking station and a conveyor car, wherein the conveyor belt is arranged on the front side and the rear side of the support frame, the left side of the conveyor belt is provided with the in-warehouse tray stacking station, the right side of the in-warehouse tray stacking station is provided with the material baffle, the material tray is arranged on the support frame below the material baffle, the right side of the support frame is provided with the delivery tray stack unstacking station, the conveyor car is arranged on the support frame at the front end of the delivery tray stack unstacking station, the left side of the support frame is provided with a tray changing station material inlet and outlet, support tables are arranged on the left side and the right side of the interior of the support frame, a double-shaft motor is arranged above the support table on the left side of the support frame, a fixing plate is arranged on the surface of the support table on the right side of the support frame, and a tray changing frame is arranged above the support table, the surface welding of support frame has the butt joint piece, trades a set frame and passes through the fixed column and outer bush and link to each other with the support frame, and fixed column fixed mounting is on the support frame, and the outer bush welding is in the bottom of trading a set frame.

The invention has the beneficial effects that:

1) the tray replacing mechanism for logistics automation has better effect, the tray replacing mechanism is improved on the basis of the prior art, and the conveying vehicle on the device shuttles between the tray replacing work and the code disc station, so that the object is quickly replaced and conveyed, the use efficiency of the device is improved, the original stack shape can be maintained when the tray is replaced, and the horizontal tray replacement can not change the original stack shape direction;

2) when the device is used, the second roller and the first bevel gear can be butted through the rubber rod between the second roller and the first bevel gear, the using effect of the device is improved, the torque is increased when the device bears excessive pressure, and the second roller and the first bevel gear are disengaged from each other, so that the device can automatically stop rotating when receiving the excessive pressure, the device can stop rotating when transporting heavy objects, the using safety of the device is improved, the defect that the safety of the existing conveying device is poor when the conveying device is used is overcome, and the load size can be adjusted;

3) this a trade support mechanism for commodity circulation is automatic effect is better, the device can utilize screw drive structure to drive the roller rotation when trading a set frame and go up and down when using, can drive the epaxial object of roller and move forward at roller pivoted in-process, the convenience that the device is practical has been promoted, the device can also pass through the linkage structure of bevel gear and solenoid when using, make the in-process that trades a set frame and rise, automatically, carry the object forward through the roller, thereby make the object carry the article automatically, the linkage effect of device has been promoted, the device can also utilize square kelly and pipe box to make the screwed pipe rotate can the automatic shutdown rotation after the top, the relatively poor defect of current drive arrangement protecting effect and linkage performance has been solved.

On the basis of the technical scheme, the invention can be further improved as follows.

Further, a connecting rod is rotatably connected inside the fixed plate, a fixed block is welded on the outer side of the connecting rod, the left side of the connecting rod is connected with an output shaft on the right side of the double-shaft motor, and discs are fixedly connected to the output shaft on the left side of the double-shaft motor and the right end of the connecting rod; a fixed shaft is fixedly arranged on the surface of the disc, a connecting frame is movably arranged on the outer side of the fixed shaft, a rack is fixedly arranged on the left side of the connecting frame, and a sliding block is welded below the rack; the inside of brace table is seted up and is used for the spout that the slider removed, laminates mutually between the inner wall of spout and the outer wall of slider.

The beneficial effect who adopts above-mentioned further scheme is that, slide structure through the device upgoing removes the rack, drives the reciprocal flexible of rack through the disc simultaneously to make circular gear carry out positive and negative rotation, make the change dish frame carry out reciprocating elevating movement through the positive and negative rotation of circular gear.

Further, a round gear is installed on the left side of the rack in a meshed mode, a square clamping rod is welded inside the round gear, a pipe sleeve is attached to the outer side of the square clamping rod, and a limiting disc is fixedly installed at the tail end of the pipe sleeve; the inner threads of the butt joint blocks are provided with threaded pipes, the tail ends of the threaded pipes are connected with the top ends of the pipe sleeves in a welding mode, the pipe sleeves and the inner walls of the threaded pipes are mutually attached to the outer wall of the square clamping rod, and the threaded pipes are connected with the disc changing frame through bearings.

Adopt above-mentioned further scheme's beneficial effect be, through screwed pipe drive trade a set frame and reciprocate to go up and down to connect material and pay-off, make things convenient for the follow-up work of trading the support, promoted the convenience that the device used.

Further, a roller shaft is mounted on a bearing above the disc changing frame, a crawler belt is arranged below the roller shaft, a first roller is arranged below the crawler belt, the height of the upper surface of the crawler belt is larger than that of the bottom end of the roller shaft, and the height of the lower surface of the crawler belt is smaller than that of the top end of the first roller; the left side and the right side in the tray changing frame are respectively provided with a second roller in a rotating mode, a first bevel gear is arranged in the second roller, and a second bevel gear is arranged below the first bevel gear in a meshed mode.

Adopt above-mentioned further scheme's beneficial effect is, after the change dish frame rises to the top, the connected mode between pipe sleeve and the butt joint piece is for rotating the connection, and the change dish frame no longer rises this moment, utilizes piebald horse to drive the roller rotation that is used for carrying the material with the rotation of running wheel to carry the material.

Further, the second bevel gear is fixedly installed at the top end of the threaded pipe, butt joint grooves are formed in the inner portion of the second bevel gear and the surface of the first bevel gear, and a rubber rod is attached to the inner portion of each butt joint groove; a rubber pad is arranged around the rubber rod, a clamping groove is formed in the rubber pad, a rubber clamping block is arranged in the clamping groove, and the rubber clamping block is fixed on the surface of the rubber pad; the rubber pad forms a clamping structure with the adjacent rubber pad through the rubber clamping block and the clamping groove; the second roller barrel and the first bevel gear form a clamping structure through a rubber rod, and the rubber pads are distributed on the outer side of the rubber rod at equal angles.

The beneficial effects of adopting above-mentioned further scheme are that, adjust the connection status between second roller and the first bevel gear through the rubber pole, thereby adjust the chucking effect through the number that increases or reduce the installation of rubber fixture block, the automatic block that breaks away from when the moment of torsion increase plays the safeguard effect, breaks away from the block automatically and closes the bring to rest when article weight is too big, has promoted the security of device use.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic top view of the present invention;

FIG. 3 is a schematic front view of the present invention;

FIG. 4 is a schematic side view of the present invention;

FIG. 5 is a schematic view of a connecting structure of a support frame and a disc-changing carriage according to the present invention;

FIG. 6 is a schematic diagram of the structure at A of FIG. 5 in accordance with the present invention;

FIG. 7 is a schematic diagram of the structure of FIG. 5 at B in accordance with the present invention;

FIG. 8 is a schematic view of the connection structure of the circular gear and the supporting table of the present invention;

FIG. 9 is a schematic view of the connection structure of the limiting plate and the circular gear of the present invention;

FIG. 10 is a schematic view of the connection structure of the support frame and the docking block of the present invention;

FIG. 11 is a schematic view of the connection structure of the disc changer frame and the second roller of the present invention;

FIG. 12 is a schematic view of the structure of FIG. 11 at C in accordance with the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1. the device comprises a support frame, 2, a conveying belt, 3, an in-warehouse tray stacking station, 4, a material baffle, 5, a material tray, 6, a delivery tray stacking and unstacking station, 7, a conveying vehicle, 8, a tray changing station material inlet and outlet, 9, a support table, 10, a fixing plate, 11, a connecting rod, 12, a double-shaft motor, 13, a disc, 14, a fixing shaft, 15, a connecting frame, 16, a rack, 17, a sliding block, 18, a sliding groove, 19, a circular gear, 20, a square clamping rod, 21, a pipe sleeve, 22, a limiting disc, 23, a fixing block, 24, a threaded pipe, 25, a butt joint block, 26, a fixing column, 27, an outer bushing, 28, a tray changing frame, 29, a roller shaft, 30, a crawler belt, 31, a first roller, 32, a second roller, 33, a first bevel gear, 34, a second bevel gear, 35, a butt joint groove, 36, a rubber rod, 37, a rubber cushion, 38, a clamping groove, 39 and a rubber clamping block.

Detailed Description

The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.

In-process of commodity circulation transportation, carry and trade and hold in the palm an indispensable ring, transport the article through trading the support equipment, some existing trade the support device when using, can not be when bearing too big pressure automatic shutdown rotation, and can not adjust the size of load, the lower security of adjustable degree is relatively poor, the device is when using simultaneously, can not trade under the condition that does not change original buttress shape direction and hold in the palm the processing, and traditional trade holds in the palm the mode and consumes manpower and materials more, work efficiency is lower, the inventor has proposed a support mechanism that trades that is used for the commodity circulation is automatic and has solved above-mentioned problem to this inventor.

The present invention provides the following preferred embodiments

As shown in fig. 1-2, a tray changing mechanism for logistics automation comprises a support frame 1, a conveyor belt 2, a tray stacking station 3 in a warehouse, a material baffle 4, a material tray 5, a delivery tray stack unstacking station 6 and a conveyor car 7, wherein the conveyor belt 2 is arranged on the front side and the rear side of the support frame 1, the tray stacking station 3 in the warehouse is arranged on the left side of the conveyor belt 2, the material baffle 4 is arranged on the right side of the tray stacking station 3 in the warehouse, the material tray 5 is arranged on the support frame 1 below the material baffle 4, the delivery tray stack unstacking station 6 is arranged on the right side of the support frame 1, the conveyor car 7 is arranged on the support frame 1 at the front end of the delivery tray stack unstacking station 6, a tray changing station material inlet and outlet 8 is arranged on the left side of the support frame 1, support tables 9 are arranged on the left side and the right side of the interior of the support frame 1, a double-shaft motor 12 is arranged above the support tables 9 on the left side of the support frame 1, the fixed surface of the supporting table 9 on the right side of the supporting frame 1 is provided with a fixing plate 10, a tray changing frame 28 is installed above the supporting frame 1, the surface of the supporting frame 1 is welded with a butt joint block 25, the transmission assemblies on the left side and the right side are driven by a double-shaft motor 12 to rotate, the linkage function of the device is guaranteed, the tray changing frame 28 is connected with the supporting frame 1 through a fixing column 26 and an outer bushing 27, the fixing column 26 is fixedly installed on the supporting frame 1, and the outer bushing 27 is welded at the bottom of the tray changing frame 28.

In this embodiment, as shown in fig. 5-6, in order to further improve the linkage effect of the device, the inside of the fixing plate 10 is rotatably connected with a connecting rod 11, a fixing block 23 is welded on the outer side of the connecting rod 11, the left side of the connecting rod 11 is connected with an output shaft on the right side of the double-shaft motor 12, and the output shaft on the left side of the double-shaft motor 12 and the right end of the connecting rod 11 are both fixedly connected with a disc 13; a fixed shaft 14 is fixedly arranged on the surface of the disc 13, a connecting frame 15 is movably arranged on the outer side of the fixed shaft 14, a rack 16 is fixedly arranged on the left side of the connecting frame 15, and a sliding block 17 is welded below the rack 16; a sliding groove 18 for moving the sliding block 17 is formed in the supporting table 9, and the inner wall of the sliding groove 18 is attached to the outer wall of the sliding block 17; the rack 16 is moved by the upward sliding structure of the device, and simultaneously, the disk 13 drives the rack 16 to reciprocate, so that the circular gear 19 rotates forwards and backwards, and the disk changing frame 28 reciprocates and moves up and down by the forward and reverse rotation of the circular gear 19.

In this embodiment, as shown in fig. 5 to 10, in order to further improve the convenience of the device, a circular gear 19 is engaged and mounted on the left side of the rack 16, a square clamping rod 20 is welded inside the circular gear 19, a pipe sleeve 21 is attached to the outer side of the square clamping rod 20, and a limiting disc 22 is fixedly mounted at the tail end of the pipe sleeve 21; the butt joint block 25 is internally provided with a threaded pipe 24 in a threaded manner, the tail end of the threaded pipe 24 is connected with the top end of the pipe sleeve 21 in a welding manner, the inner walls of the pipe sleeve 21 and the threaded pipe 24 are mutually attached to the outer wall of the square clamping rod 20, the threaded pipe 24 is connected with the disc changing frame 28 through a bearing, and the disc changing frame 28 is driven to reciprocate through the threaded pipe 24, so that material receiving and feeding are performed, and subsequent tray changing work is facilitated.

In the embodiment, as shown in fig. 5-6 and fig. 10-12, in order to further improve the efficiency of the use of the device, a roller shaft 29 is mounted on the upper bearing of the disc changing frame 28, a crawler belt 30 is arranged below the roller shaft 29, a first roller 31 is arranged below the crawler belt 30, the height of the upper surface of the crawler belt 30 is greater than that of the bottom end of the roller shaft 29, and the height of the lower surface of the crawler belt 30 is less than that of the top end of the first roller 31; the left side and the right side of the interior of the disc changing frame 28 are respectively provided with a second roller 32 in a rotating mode, the interior of the second roller 32 is provided with a first bevel gear 33, a second bevel gear 34 is installed below the first bevel gear 33 in a meshing mode, after the disc changing frame 28 rises to the top, the pipe sleeve 21 is connected with the butt joint block 25 in a rotating mode, at the moment, the disc changing frame 28 does not rise any more, and the rotating of piebald horse travelling wheels is utilized to drive the roller shafts 29 used for conveying materials to rotate, so that the materials are conveyed.

In this embodiment, as shown in fig. 5 to 12, in order to further improve the safety of the device in use, the second bevel gear 34 is fixedly installed at the top end of the threaded pipe 24, the interior of the second bevel gear 34 and the surface of the first bevel gear 33 are both provided with a butt-joint groove 35, and a rubber rod 36 is attached to the interior of the butt-joint groove 35; a rubber pad 37 is arranged around the rubber rod 36, a clamping groove 38 is formed in the rubber pad 37, a rubber clamping block 39 is arranged in the clamping groove 38, and the rubber clamping block 39 is fixed on the surface of the rubber pad 37; the rubber pad 37 forms a clamping structure with the adjacent rubber pad 37 through the rubber clamping block 39 and the clamping groove 38; the second roller 32 forms a clamping structure through the rubber rod 36 and the first bevel gear 33, the rubber pads 37 are distributed at equal angles on the outer side of the rubber rod 36, the connection state between the second roller 32 and the first bevel gear 33 is adjusted through the rubber rod 36, the clamping effect is adjusted by increasing or reducing the number of the rubber clamping blocks 39, the clamping is automatically separated when the torque is increased, the protection effect is achieved, and the clamping and the operation stop are automatically separated when the weight of an object is overlarge.

The specific working process of the invention is as follows:

(1) lifting disc-changing carriage 28

Firstly, materials are conveyed to the material tray 5 between two adjacent material baffles 4 through the disc changing frame 28, the discs 13 on the left side and the right side are driven to rotate through the double-shaft motor 12, the discs 13 rotate to enable the fixed shaft 14 to abut against the inner wall of the connecting frame 15, the rack 16 is driven to slide in a reciprocating mode inside the supporting platform 9 through the sliding block 17, and due to the fact that the rack 16 is meshed with the circular gear 19, the rack 16 rotates to drive the square clamping rod 20 to rotate, the pipe sleeve 21 and the limiting plate 22 are driven to rotate, the pipe sleeve 21 and the threaded pipe 24 are fixed, and therefore the threaded pipe 24 rotates, and the disc changing frame 28 can integrally move up and down under the limiting effect of the fixed column 26 and the outer lining 27.

(2) Conveying materials

When the entire tray changing frame 28 moves upwards, the rotation of the threaded pipe 24 can rotate the first bevel gear 33 and the second bevel gear 34, the first bevel gear 33 drives the second roller 32 when rotating, the second roller 32 drives the material to move through the crawler 30, and conveys the material to the material tray 5, and the material is made to complete tray changing work through the movement of the conveying vehicle 7.

(3) Protection by clutch mechanism

When the second bevel gear 34 rotates to the highest position, the pipe sleeve 21 and the limiting disc 22 limit the threaded pipe 24, so that the threaded pipe 24 is separated from the inside of the butt joint block 25, the pipe sleeve 21 rotates in the inside of the butt joint block 25, the situation that the driving part is damaged is avoided, and when the motor rotates reversely, the threaded pipe 24 is in threaded connection with the butt joint block 25 again under the action of gravity.

(4) For adjusting the load size

The mounting number of the rubber pads 37 on the rubber rod 36 is adjusted through the clamping grooves 38 and the rubber clamping blocks 39, so that the torque required when the first bevel gear 33 is disengaged from the second roller 32 is adjusted, the device can automatically stop working when bearing different loads, and the safe use of the device is ensured; support frame 1 is used for wholly supporting the device, through delivery wagon 7 in storehouse tray code wheel station 3, material tray 5 and delivery pallet buttress are broken a yard and are shuttled between the dish station 6, thereby carry out the transport work to the material stably, delivery wagon 7 connects interior material of storehouse and the delivery pallet that plugs into, delivery wagon 7 is towards the left side removal, the material falls to the layer board on following delivery wagon 7 and being less than tray removal tray, the layer board is towards the right side removal, delivery wagon 7 takes delivery pallet and layer board linkage, the material falls on the wooden tray of delivery through the right side baffle, the remaining storehouse tray is piled up the code wheel by code wheel machine on the delivery wagon 7, accomplish the work of changing dishes.

In summary, the following steps: the invention has the beneficial effects that the device is improved on the existing basis, and the conveying vehicle 7 on the device is shuttled between the tray changing work and the code disc station, so that the object can be quickly replaced and conveyed, the use efficiency of the device is improved, the original stack shape can be still maintained when the tray is replaced, and the horizontal tray changing can not change the original stack shape direction;

when the device is used, the second roller 32 and the first bevel gear 33 can be butted through the rubber rod 36 between the second roller 32 and the first bevel gear 33, the using effect of the device is improved, the torque is increased when the device bears overlarge pressure, and the second roller 32 and the first bevel gear 33 are disengaged, so that the device can automatically stop rotating when the device receives the overlarge pressure, the device can be ensured to stop rotating when being transported to a heavy object, the using safety of the device is improved, the defect of poor safety when the existing conveying device is used is overcome, and the load size can be adjusted;

this a trade support mechanism for commodity circulation is automatic effect is better, the device can utilize screw drive structure to drive the roller 29 rotation when trading a set frame 28 and go up and down when using, can drive the object forward movement on the roller 29 at roller 29 pivoted in-process, the practical convenience of device has been promoted, the device can also pass through the linkage structure of bevel gear and screwed pipe when using, make trade the in-process that set frame 28 rises, carry the object forward through roller 29 automatically, thereby make the object automatic carry the article, the linkage effect of device has been promoted, the device can also utilize square kelly 20 and pipe box 21 to make screwed pipe 24 rotate can the automatic shutdown rotation after the top, the relatively poor defect of current drive arrangement protecting effect and linkage performance has been solved.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (9)

1. A tray changing mechanism for logistics automation is characterized by comprising a support frame (1), a conveying belt (2), an in-warehouse tray stacking station (3), a material baffle (4), a material tray (5), a delivery tray stack unstacking station (6), a conveying vehicle (7) and a double-shaft motor (12), wherein the conveying belt (2) is installed on the front side and the rear side of the support frame (1), the in-warehouse tray stacking station (3) is arranged on the left side of the conveying belt (2), the material baffle (4) is arranged on the right side of the in-warehouse tray stacking station (3), the material tray (5) is installed on the support frame (1) below the material baffle (4), the tray stack unstacking station (6) is arranged on the right side of the delivery support frame (1), the conveying vehicle (7) is installed on the support frame (1) at the front end of the delivery tray stack unstacking station (6), and a tray changing station material inlet and outlet (8) is arranged on the left side of the support frame (1), supporting tables (9) are installed on the left side and the right side of the interior of a supporting frame (1), a double-shaft motor (12) is arranged above the supporting table (9) on the left side of the supporting frame (1), a fixing plate (10) is arranged on the surface of the supporting table (9) on the right side of the supporting frame (1), a tray changing frame (28) is installed above the supporting frame (1), butt-jointed blocks (25) are welded on the surface of the supporting frame (1), the tray changing frame (28) is connected with the supporting frame (1) through fixing columns (26) and outer bushes (27), the fixing columns (26) are fixedly installed on the supporting frame (1), and the outer bushes (27) are welded at the bottom of the tray changing frame (28).

2. The tray changing mechanism for the logistics automation of claim 1, wherein a connecting rod (11) is rotatably connected inside the fixing plate (10), a fixing block (23) is welded on the outer side of the connecting rod (11), the left side of the connecting rod (11) is connected with an output shaft on the right side of the double-shaft motor (12), and a disc (13) is fixedly connected on the output shaft on the left side of the double-shaft motor (12) and the right end of the connecting rod (11).

3. The tray changing mechanism for logistics automation as claimed in claim 2, wherein a fixed shaft (14) is fixedly arranged on the surface of the disc (13), a connecting frame (15) is movably arranged on the outer side of the fixed shaft (14), a rack (16) is fixedly arranged on the left side of the connecting frame (15), and a sliding block (17) is welded below the rack (16); a sliding groove (18) used for the sliding block (17) to move is formed in the supporting table (9), and the inner wall of the sliding groove (18) and the outer wall of the sliding block (17) are attached to each other.

4. The tray replacing mechanism for the logistics automation as claimed in claim 3, wherein a circular gear (19) is mounted on the left side of the rack (16) in a meshed manner, a square clamping rod (20) is welded inside the circular gear (19), a pipe sleeve (21) is arranged on the outer side of the square clamping rod (20) in a fitted manner, and a limiting disc (22) is fixedly mounted at the tail end of the pipe sleeve (21).

5. The tray changing mechanism for logistics automation as claimed in claim 1, wherein a threaded pipe (24) is installed in the butt joint block (25) through internal threads, the tail end of the threaded pipe (24) is connected with the top end of the pipe sleeve (21) in a welding mode, the pipe sleeve (21) and the inner wall of the threaded pipe (24) are attached to the outer wall of the square clamping rod (20), and the threaded pipe (24) is connected with the tray changing frame (28) through a bearing.

6. The tray changing mechanism for logistics automation of claim 5, wherein a roller shaft (29) is mounted on the upper bearing of the tray changing frame (28), a crawler belt (30) is arranged below the roller shaft (29), a first roller (31) is arranged below the crawler belt (30), the height of the upper surface of the crawler belt (30) is larger than that of the bottom end of the roller shaft (29), and the height of the lower surface of the crawler belt (30) is smaller than that of the top end of the first roller (31).

7. The tray changing mechanism for logistics automation of claim 6, wherein the tray changing frame (28) is rotatably provided with second rollers (32) at the left and right sides, a first bevel gear (33) is arranged inside the second rollers (32), and a second bevel gear (34) is arranged below the first bevel gear (33) in a meshing manner.

8. The tray changing mechanism for the logistics automation of claim 7, wherein the second bevel gear (34) is fixedly installed at the top end of the threaded pipe (24), the interior of the second bevel gear (34) and the surface of the first bevel gear (33) are both provided with a butt joint groove (35), and a rubber rod (36) is attached to the interior of the butt joint groove (35).

9. The tray replacing mechanism for the logistics automation as claimed in claim 8, wherein a rubber pad (37) is installed around the rubber rod (36), a clamping groove (38) is formed in the rubber pad (37), a rubber clamping block (39) is installed in the clamping groove (38), and the rubber clamping block (39) is fixed on the surface of the rubber pad (37); the rubber pad (37) forms a clamping structure with the adjacent rubber pad (37) through a rubber clamping block (39) and a clamping groove (38); the second roller (32) and the first bevel gear (33) form a clamping structure through a rubber rod (36), and the rubber pads (37) are distributed on the outer side of the rubber rod (36) at equal angles.

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