Tray sorting machine and tray sorting system

Abstract

The invention discloses a tray sorting machine and a tray sorting system.According to the tray sorting machine, a linear motor secondary assembly is arranged at the top of a side frame on one side of a tray sorting trolley, and a linear motor primary assembly is suspended above the linear motor primary assembly; in this way, a first pressing wheel and a second pressing wheel are arranged on a side frame and / or a cover plate on the side, where a linear motor secondary assembly is located, of a tray sorting trolley passing through the linear motor primary assembly; therefore, air gap changes of the linear motor primary assembly and the linear motor secondary assembly caused by up-and-down jumping of the tray sorting trolley when passing through the linear motor primary assembly are effectively avoided, the driving stability and reliability of the linear motor are effectively guaranteed, meanwhile, collision between the linear motor secondary assembly and the linear motor primary assembly is fully avoided, and the service life of the linear motor is prolonged. And the operation safety of the equipment is improved.

Description

Technical Field

[0001] The present invention relates to the field of sorting equipment, in particular to a tray sorting machine and a tray sorting system. Background Art

[0002] Tray sorting machine is a commonly used sorting equipment. It is a device that automatically drops packages by flipping the tray downward and opening it, using the gravity of the package.

[0003] The patent document with the authorization announcement number CN208036737U discloses a usable structure of a pallet sorting machine. In this structure, the pallet sorting machine uses a driving structure composed of a sprocket and a chain to drive the pallet sorting trolley to run along the track. This driving structure is relatively complex, difficult to implement, and is not conducive to improving the running speed of the pallet sorting trolley.

[0004] The patent document with the authorization announcement number CN216548160U discloses another structure of a pallet sorting machine that can be used. In this structure, the primary assembly of the linear motor on the outside of the track cooperates with the secondary plate on the pallet sorting trolley to drive the pallet sorting trolley to move along the track. A suitable air gap needs to be set between the primary assembly of the linear motor and the secondary plate to ensure stable drive, and the air gap between the primary assembly of the linear motor and the secondary plate is usually set between 0.1 mm and 0.5 mm. However, during the movement of the pallet sorting trolley along the track, the pallet sorting trolley will inevitably swing slightly left and right. Therefore, the secondary plate on the pallet sorting trolley cannot ensure a fixed air gap with the secondary assembly of the linear motor when passing through the primary assembly of the linear motor, which affects the stability of the electromagnetic thrust to a certain extent, which is not conducive to the stable operation of the pallet truck. Summary of the invention

[0005] The purpose of the present invention is to solve the above problems existing in the prior art and to provide a tray sorting machine and a tray sorting system.

[0006] The purpose of the present invention is achieved through the following technical solutions: A pallet sorting machine comprises a track and a circle of pallet sorting trolleys moving along the track, a linear motor secondary assembly is arranged above a side frame on one side of the pallet sorting trolley, a fixed frame is arranged at a set position of the track on the corresponding side of the linear motor secondary assembly, and a linear motor primary assembly matching with the linear motor secondary assembly and used for driving the pallet sorting trolley to move along the track is arranged on the fixed frame; A row of first clamping wheels and / or a row of second clamping wheels are arranged on the fixed frame; when any of the tray sorting trolleys passes through the first clamping wheels, the first limiter is pressed on the top surface of the cover plate where the linear motor secondary assembly of the tray sorting trolley is located; And / or when any of the tray sorting trolleys passes through the second clamping wheel, the second clamping wheel presses on the top surface of the side frame where the linear motor secondary assembly of the tray sorting trolley passing through it is located.

[0007] Preferably, the track includes an inner track and an outer track, the inner track is a grooved track opening upward, and walking wheels and limiting wheels are arranged under the side frame on the inner side of the pallet sorting trolley, and the axis of the limiting wheel extends in the vertical direction; the side frames on the inner sides of adjacent pallet sorting trolleys are connected through joint bearings; and first buffer pads are arranged at both ends of the side frames on the outer side of the pallet sorting trolley.

[0008] Preferably, the tray sorting trolley includes support shafts connected to both ends of two side frames and four trays rotatably connected to the two support shafts, the two trays that are directly opposite to each other form a tray pair that opens and closes simultaneously, the two side frames are respectively provided with opening and closing control components, the opening and closing control components include two supporting members, when the two trays of a tray pair remain in a closed state, each supporting member of the opening and closing control component on the outside of the tray pair provides support for one tray of the tray pair.

[0009] Preferably, a stopper matching the support member is provided on a side of the tray close to an opening and closing control assembly driving the tray to open and close, and the stopper is close to a side of the tray away from a support axis around which the tray rotates.

[0010] Preferably, the opening and closing control assembly includes a vertical rotating shaft rotatably arranged on the side frame, a release arm located below the side frame is arranged on the vertical rotating shaft, two support members are arranged on the release arm, the release arm includes a force-bearing portion extending to the outside of the side frame, the force-bearing portion cooperates with the opening and closing drive assembly arranged on the side of the track to drive the release arm to rotate so as to switch between a release position and a support position, when in the release position, the support member does not provide support for the tray pair, and when in the support position, the support member provides support for the tray pair in a closed state, and the release arm is also connected to an elastic member that keeps it in the support position.

[0011] Preferably, the two pallets of a pallet pair are connected by a linkage arm connected to their outer ends, a second buffer pad is provided on the inner side of a side frame close to a pallet pair, and when a pallet pair is in a fully open state, the linkage arm is supported on the second buffer pad.

[0012] Preferably, a limit member that rotates synchronously with the vertical rotating shaft is provided above the vertical rotating shaft, and when the tray pair is fully opened, the limit member presses on the top of the linkage arm or on the top of the protrusion on the side of the linkage arm.

[0013] Preferably, opening and closing drive components are respectively provided on both sides of the track to cooperate with the opening and closing control component to release the support of the two support members to a tray pair, and the opening and closing drive component includes a driving wheel with an axis extending in a vertical direction, and the driving wheel is connected to a lifting drive that drives it to adjust between a first height and a second height. At the first height, the driving wheel is adapted to the release arm height of the opening and closing control component; at the second height, the driving wheel is located above or below the release arm.

[0014] Preferably, a reset component for switching the pallet of a pallet sorting trolley passing through it from an open state to a closed state is provided on the track, and an abnormal unloading component located upstream of and close to the reset component is provided on the track, and the abnormal unloading component is used to open the pallet of the pallet sorting trolley passing through it.

[0015] A tray sorting system comprises any of the tray sorting machines described above.

[0016] The advantages of the technical solution of the present invention are mainly reflected in: The present invention arranges the secondary assembly of the linear motor on the top of the side frame, and suspends the primary assembly of the linear motor above the primary assembly of the linear motor. In this way, the first clamping wheel and the second clamping wheel can be arranged on the side frame and / or the cover plate on the side where the secondary assembly of the linear motor is located on the pallet sorting trolley passing through the primary assembly of the linear motor, thereby effectively avoiding the up and down jumping of the pallet sorting trolley when passing through the primary assembly of the linear motor and causing the change of the air gap between the primary assembly and the secondary assembly of the linear motor, thereby effectively ensuring the stability and reliability of the linear motor drive. At the same time, the collision between the secondary assembly and the primary assembly of the linear motor is fully avoided, thereby improving the safety of equipment operation.

[0017] The opening and closing control assembly of the present invention can provide support for two pallets at the same time, thereby effectively improving the carrying capacity of the pallets, facilitating the sorting of heavier goods, and at the same time, effectively ensuring that the two pallets of the pallet pair remain flush.

[0018] The tray pair of the present invention is connected by a linkage arm, so it is more convenient to use a second buffer pad to better provide shock absorption for the linkage arm when the tray is opened, thereby effectively reducing the vibration of the tray pair when it is opened, which is conducive to extending the service life. Further, the limiting member that rotates synchronously with the support member and the second buffer pad are combined with the linkage arm to limit the position, so that the problem of continuous shaking during the operation of the tray pair after opening can be effectively avoided, which is conducive to extending the service life of the mechanical structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1is a top view of the tray sorting machine of the present invention, in which the trays of each tray sorting trolley are in an open state; Figure 2 It is a top view of the tray sorting machine of the present invention without the tray sorting trolley; Figure 3 is a three-dimensional diagram of a tray sorting trolley of the present invention; Figure 4 It is a bottom-up stereoscopic view of the tray sorting trolley of the present invention with the cover plate and the secondary assembly of the linear motor hidden; Figure 5 It is a side perspective view of the tray sorting trolley of the present invention with the cover plate and the secondary assembly of the linear motor hidden; Figure 6 is a schematic diagram of an opening and closing drive assembly of the present invention; Figure 7 It is a side view of the tray sorting machine of the present invention without the tray sorting trolley; Figure 8 is a partial cross-sectional view of the tray sorting machine of the present invention; Fig. 9 yes Figure 8 A partial enlarged view of the Fig.10 It is a side view of the tray sorting machine of the present invention with the tray sorting trolley hidden. DETAILED DESCRIPTION

[0020] The purpose, advantages and features of the present invention will be illustrated and explained by the non-limiting description of the following preferred embodiments. These embodiments are only typical examples of the application of the technical solution of the present invention, and any technical solution formed by equivalent replacement or equivalent transformation falls within the scope of protection claimed by the present invention.

[0021] In the description of the scheme, it should be noted that the terms "center", "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0022] Example 1 The tray sorting machine disclosed by the present invention is described below in conjunction with the accompanying drawings. Figure 1 As shown, it includes a track 100 and a circle of tray sorting trolleys 200 movably arranged on the track 100 .

[0023] As attached Figure 2As shown, the track 100 includes an inner track 110 and an outer track 120, and the inner track 110 and the outer track 120 are concentrically arranged. Their shapes can be designed as needed. For example, they are arranged into regular shapes such as waist-shaped or rounded rectangles. Of course, they can also be arranged into other irregular shapes, which are not limited here.

[0024] The specific structures of the inner rail 110 and the outer rail 120 can be designed according to the structure of the tray sorting trolley 200. Preferably, the inner rail 110 is a grooved rail opening upward, and the outer rail 120 is a rectangular rail with a rectangular cross-section.

[0025] As attached Figure 3 As shown, the tray sorting trolley 200 includes a running wheel 230 and a limiting wheel 240 moving in the inner track 110 and a running wheel 230 moving on the outer track 120. The axis of the limiting wheel 240 extends in the vertical direction, and the axial direction in the running path extends horizontally.

[0026] Specifically, the tray sorting trolley 200 includes a frame 210, and the frame 210 includes two side frames 211 and support shafts 212 connected to both ends of the two side frames 211. The specific shape of each side frame 211 can be designed as needed, preferably a U-shaped groove, and the notch of the U-shaped groove is set downward, and at least one vertical shaft 213 is set on the U-shaped groove. Preferably, there are two vertical shafts 213 and they are close to both ends of the side frame 211. Each of the vertical shafts 213 is pivotally connected to a wheel seat 220 located below the side frame 211, and a walking wheel 230 is set on the wheel seat 220. At the same time, it is defined that when the tray sorting trolley 200 is located on the track 100, its side close to the inner track 110 is the inner side, and its side close to the outer track 120 is the outer side, and the lower end of each vertical shaft 213 of the inner side frame 211 is coaxially connected to a limiting wheel 240.

[0027] Since the support shaft 212 needs to be installed with a pallet 250 that rotates relative to it and cannot be used for connecting adjacent pallet sorting carts 200, in order to facilitate the connection of adjacent pallet sorting carts 200 and realize the smooth turning of the pallet sorting cart 200 at the turning point of the track 100, in this embodiment, the side frames 211 on the inner sides of adjacent pallet sorting carts 200 are connected through joint bearings 214. Specifically, the upper ends of the two vertical shafts 213 of the side frames 211 on one side of each pallet sorting cart 200 are respectively connected to joint bearings 214, and the joint bearings 214 are rod end joint bearings. The joint bearings 214 of adjacent pallet sorting carts 200 are connected through connecting rods. Since there is no physical connection between the opposite ends of the side frames 211 on the outside of adjacent pallet sorting carts 200, in order to avoid collision between adjacent pallet sorting carts 200 after passing through the turning section of the track 100, first buffer pads 215 are respectively provided at both ends of the frame 210 on the outside of each pallet sorting cart 200, and the first buffer pads 215 are fixed on the L-shaped mounting plates 216 at both ends of the side frames 211 on the outside. When the pallet sorting cart 200 is located in the straight section of the track 100, the first buffer pads 215 at the ends of the side frames 211 on the outside of adjacent pallet sorting carts 200 abut against each other, which can effectively ensure that the adjacent pallet sorting carts 200 can maintain a tightly connected state in the straight section of the track 100, and at the same time, in the turning section, the pallet sorting carts 200 can turn smoothly and avoid violent collision between the pallet sorting carts 200 after turning.

[0028] As attached Figure 3As shown, four trays 250 are provided on the frame 210 so as to be rotatable and openable relative to the frame 210 , and two trays 250 located between two side frames 211 are rotatably provided on each support shaft 212 via bearings. The tray 250 includes a sleeve 251 rotatably connected to the support shaft 212 through a bearing, two side plates 252 are connected to both ends of the sleeve 251, a support plate 253 is connected between the two side plates 252, and a through hole is opened on the support plate 253. At the same time, the outer end of each sleeve 251 (the end of the sleeve 251 close to the side frame 211) is provided with a rocker arm 254, and the rocker arms 254 on the two sleeves 251 located on the same support shaft 212 are located in corresponding positions. The two trays 250 facing each other on the two support shafts 212 are a tray pair that opens and closes at the same time, and the extension directions of the two rocker arms 254 connected to the two sleeves 251 of a tray pair are vertical or approximately vertical. Preferably, the angle between the extension directions of the two rocker arms 254 connected to the two sleeves 251 of a tray pair is between 85° and 95°. The rocker arms 254 at the outer ends of the two trays 250 of a tray pair are connected by a linkage arm 260, and the two ends of the linkage arm 260 are pivotally connected to the rocker arms 254 at the outer ends of the two trays 250. The linkage arm 260 includes a first rod portion 261 and a second rod portion 262, and the first rod portion 261 and the second rod portion 262 form an obtuse angle of not less than 135 degrees. The linkage arm 260 can be located on the outer sides of the two side frames 211, or can be set on the inner sides of the two side frames 211. Preferably, the linkage arm 260 is set on the inner sides of the two side frames 211.

[0029] As attached Figure 3 As shown, of the two trays 250 of a tray pair, the back of the tray 250 facing forward is provided with a closing drive 270, and the closing drive 270 may be a reset roller disposed on the back of the tray 250 on the side close to the running direction, and the axis of the reset roller is parallel to the support shaft 212 and is located on the back of the tray 250 facing forward, away from the support shaft 212. Of course, the closing drive 270 may also be other feasible structures, such as a universal ball, etc. When the trays 250 are unsupported, they will remain open due to gravity, so that Figure 4 As shown, an opening and closing control assembly 280 is respectively provided on the two side frames 211 of the frame 210, and the opening and closing control assembly 280 is used to limit the closed trays 250 to prevent them from rotating downward and opening under the action of gravity. In order to provide more sufficient support for each of the trays 250, each of the opening and closing control assemblies 280 includes two supporting members 281. When the two trays 250 of a tray pair are kept in a closed state, each supporting member 281 of the opening and closing control assembly 280 on the outside of the tray pair provides support for one of the trays 250 of the tray pair.

[0030] In this way, an opening and closing control component 280 can provide support for the two pallets 250 of a pallet pair, which is not only conducive to improving the carrying capacity of a single pallet 250, thereby meeting the needs of sorting heavier goods, but also effectively ensuring that the two pallets 250 of the pallet pair remain in a flush state, and can effectively reduce the shear force on the bolts connecting the linkage arm 260, the rocker arm 254 and the sleeve 251, as well as the pivot shaft, thereby helping to ensure the safety of the structure and improve its service life.

[0031] As attached Figure 4 As shown, the opening and closing control assembly 280 includes a vertical rotating shaft 282 rotatably arranged on the side frame 211, and the vertical rotating shaft 282 is close to the middle position in the length direction of the side frame 211. The relative rotation connection structure between the vertical rotating shaft 282 and the side frame 211 can adopt a known feasible structure. For example, the vertical rotating shaft 282 can be rotatably connected to the side frame 211 by a bearing or a sleeve fixed on the side frame 211. The vertical rotating shaft 282 is provided with a release arm 283 located below the side frame 211, and the shape of the release arm 283 can be designed as needed. Preferably, the release arm 283 is roughly L-shaped, which includes a first part 284 and a second part 285 extending horizontally. The vertical rotating shaft 282 is connected to the first part 284 and is close to the intersection of the first part 284 and the second part 285. Two support members 281 are provided on the second part 285 of the release arm 283. Specifically, a mounting block 286 is provided on the side of the second part 285 facing away from the first division, and two support members 281 are installed on the outer side of the mounting block 286. The support member 281 can be a feasible component such as a block or a universal ball. Preferably, the support member 281 is a support roller, and the axis of the support roller extends horizontally and is perpendicular to the length direction of the second part 285.

[0032] The release arm 283 rotates horizontally between a release position and a support position. When the release arm 283 is in the support position, the two support members 281 support the two trays 250 in the closed state. At this time, the second portion 285 protrudes outside the inner side of the side frame 211 and the extension direction of the second portion 285 is perpendicular or substantially perpendicular to the length direction of the side frame 211. The axis of the support roller is perpendicular or substantially perpendicular to the length direction of the side frame 211. When the release arm 283 is in the release position, the two support members 281 move to the outer side of the tray 250, so that the two trays 250 of a tray pair can rotate downward at the same time.

[0033] Furthermore, in order to better cooperate with the support member 281 and prevent the support member 281 from affecting the synchronous downward rotation of the two trays 250, a stopper 255 matching the support member 281 is provided on the side of the tray 250 close to the opening and closing control component 280 that drives the tray 250 to open and close, and the stopper 255 is close to the side of the tray 250 away from the support shaft 212 around which the tray 250 rotates, so that when the tray 250 is closed, the stopper 255 is mounted on the support member 281.

[0034] When the support member 281 is supported under the pallet 250 in a closed state, the first part 284 can extend to the outside of the side frame 211, and the part extending to the outside of the side frame 211 serves as a force-bearing part 287. The force-bearing part 287 cooperates with the opening and closing drive assembly 300 to drive the release arm 283 to rotate so that the support member 281 moves from under the pallet 250 or the block 255 to the outside of the pallet 250 or the block 255, so that the pallet 250 can rotate toward each other to open under its own weight and the weight of the goods on it. The side surface of the force-bearing portion 287 facing the running direction is a contact surface 288 that cooperates with the opening and closing drive component 300. The contact surface 288 is an inclined surface, an arc surface, or a curved surface, so that when the contact surface is blocked by the opening and closing drive component 300, the release arm 283 can rotate to allow the support member 281 to release the support for the tray 250 or the block 255, and when the release arm is driven to rotate to the release position, the contact surface can still maintain contact with the opening and closing drive for a period of time, so that the release arm can reset after staying in the release position for a period of time. When the release arm 283 is blocked by the opening and closing drive assembly 300 and rotates to a certain angle, the contact surface 288 of the release arm 283 is no longer blocked by the opening and closing drive assembly 300. At this time, it is necessary to enable the release arm 283 to automatically rotate in the opposite direction and reset, that is, to restore to a state where the extension direction of the second part 285 is parallel or substantially parallel to the length direction of the side frame 211. Correspondingly, the release arm 283 is also connected to an elastic member 290 that keeps it in the supporting position, that is, after the release arm 283 rotates to the release position, the elastic member 290 can restore the release arm to the supporting position. The elastic member 290 can be a tension spring connected between the release arm 283 and the side frame 211, or a torsion spring sleeved on the outer periphery of the vertical rotating shaft 282 and one end of which is connected to the abutment block on the release arm 283 and the other end is connected to the side frame 211. The specific design is based on the needs and is not limited here.

[0035] Furthermore, when a tray pair is in a fully opened state, the two trays 250 will vibrate due to the inertia when opening, which is not good for the mechanical life of the trays 250. Therefore, in order to solve this problem, as shown in the attached Figure 5As shown, a second buffer pad 217 is provided on the inner side of the side frame 211 close to each tray pair. When a tray pair is in a fully opened state, the linkage arm 260 is supported on the second buffer pad 217, and when the tray 250 is opened, the linkage arm 260 will fall on the second buffer pad 217 for shock absorption, thereby effectively reducing the vibration of the tray 250.

[0036] As attached Figure 5 As shown, in order to ensure that the second buffer pad 217 can have a reliable supporting effect, a fixing plate 218 is provided on the inner side of the side frame 211, and the second buffer pad 217 is a rectangular buffer member mounted on the fixing plate 218, and its specific material can be selected as needed, and in order to ensure the reliability of the connection between the second buffer pad 217 and the fixing plate 218, the second buffer pad 217 is connected to the fixing plate 218 by screws or bolts passing through the bottom thereof.

[0037] Furthermore, since the vertical shaft 282 can automatically rotate and reset, in order to better limit the vibration of the tray 250 after opening, as shown in the attached Figure 5 As shown, a stopper 289 is provided above the vertical shaft 282 to rotate synchronously therewith. When the tray pair is opened, the stopper 289 is pressed on the top of the linkage arm 260 or on the top of the protrusion 261 on the side of the linkage arm 260. Specifically, the upper end of the vertical shaft 282 is connected to a mounting plate, and the stopper 289 is provided on the mounting plate. The stopper 289 is, for example, a clamping wheel or a block, preferably a clamping wheel, and the axis of the clamping wheel is parallel to the axis of the supporting roller. The protrusion 261 is preferably provided on the side of the linkage arm 260 facing the side frame 211.

[0038] As attached Figure 1 As shown, in order to enable the tray sorting trolley 200 to open the tray 250 at different positions for sorting, a group of opening and closing drive components 300 are respectively provided at the inner track 110 and the outer track 120 of the track 100, and the positions of the opening and closing drive components 300 at the inner track 110 and the outer track 120 correspond one to one, and the specific structure of the opening and closing drive components 300 can be designed as needed.

[0039] In this embodiment, as shown in the attached Figure 6As shown, the opening and closing drive assembly 300 includes a drive wheel 310 whose axis extends in the vertical direction, and the drive wheel 310 is connected to a lifting drive 320 that drives it to adjust between a first height and a second height. At the first height, the drive wheel 310 is highly adapted to the release arm 283 of the opening and closing control assembly 280; at the second height, the drive wheel 310 is located above or below the release arm 283. The lifting drive 320 can be a feasible device of a pneumatic cylinder, a hydraulic cylinder, or an electric cylinder.

[0040] Furthermore, in order to better protect the lifting drive 320 while ensuring the position accuracy of the driving wheel 310, the driving wheel 310 is disposed on a lifting plate 330, and the lifting plate 330 is movably connected to a guide column 340 via a linear bearing 360 or a guide sleeve fixed thereon, and the guide column 340 is fixed on a mounting frame 350 on the side of the track 100.

[0041] The tray sorting trolley 200 needs to move to different positions along the track 100 to achieve sorting. In order to reliably drive the tray sorting trolley 200, as shown in the attached Figure 3 , Attachment Figure 7 -Attached Fig. 9 As shown, a linear motor secondary assembly 201 is arranged above the side frame 211 on one side of the tray sorting trolley 200, and a fixing frame 400 is arranged on the corresponding side of the track 100, and a linear motor primary assembly 500 matching the linear motor secondary assembly 201 is arranged on the fixing frame 400. Preferably, the linear motor secondary assembly 201 is arranged on the side frame 211 on the inner side of the tray sorting trolley 200, so as to facilitate loading of packages from the outer side of the tray sorting machine. Since the upper end of the vertical rotating shaft 282 is also connected to the stopper 289, in order to better install the linear motor secondary assembly 201, protect other structures and more conveniently supply packages, a cover plate 202 is respectively arranged above the two side frames 211, and the cover plate 202 includes a horizontal plate and a side baffle plate connected to the inner side of the horizontal plate. The horizontal plate is connected to the side frame 211 through a group of connecting columns 203. One end of the connecting column 203 is stepped and has an external thread. The other end face of the connecting column 203 is provided with a screw hole, so that one end of the connecting column 203 is penetrated on the side frame 211 and locked by a nut. The horizontal plate is fixed to the connecting column 203 by a bolt that penetrates the through hole thereon and is screwed into the screw hole. The side baffle plate and the horizontal plate can maintain an obtuse angle, so that the side baffle plate is inclined toward the tray 250. Of course, the side baffle plate can also be perpendicular to the horizontal plate. Of course, the limiting member is not necessary, and correspondingly, the cover plate is not necessary either.

[0042] The fixing frame 400 can be connected to the track 100, or fixed on the ground or other foundations. The fixing frame 400 includes a base frame 410. The base frame 410 is connected to a connecting frame 420 located above the inner track 110 on one side of the track 100. The linear motor primary assembly 500 is installed at the bottom of the connecting frame 420. In addition, the linear motor primary assembly 500 is arranged in a row in sequence, so that each tray sorting trolley will pass through a plurality of the linear motor primary assemblies in sequence. Of course, in other embodiments, the plurality of linear motor primary assemblies can also be arranged at different positions around the track 100.

[0043] The connecting frame 420 is also connected to the wheel frame 430, and a row of first clamping wheels 440 are arranged on the wheel frame 430. The axis of the first clamping wheel 440 extends horizontally and is perpendicular to the extension direction of the track 100 next to it. The first clamping wheel 440 presses down on the cover plate 202 where the linear motor secondary component 201 of the tray sorting trolley 200 passing through it is located.

[0044] The fixed frame 400 is also provided with a row of second clamping wheels 450; the second clamping wheels 450 are fixed to a side of the connecting frame 420 close to the track 100 and lower than the connecting frame 420 on the adapter frame 460, and the second clamping wheels 450 press down on the top surface of the side frame 211 where the linear motor secondary assembly 201 of the pallet sorting vehicle 200 passing through is located. In addition, the axes of the second clamping wheels 450 and the first clamping wheels 440 are parallel and they are distributed on both sides of the linear motor secondary assembly 201 on the pallet 250 transport vehicle passing through, so that the pressure balance can be effectively ensured.

[0045] Each tray 250 of the tray sorting trolley 200 needs to be restored to a closed state after being opened. Figure 2 , Attachment Fig.10As shown, a reset component is provided at a predetermined position of the track 100, and the reset component includes two reset slopes 700, and the two reset slopes 700 correspond to the reset roller positions on the back of the two trays 250 on the same support shaft 212, respectively. When the tray 250 moves to the reset slope 700, the reset roller climbs upward along the reset slope 700 to rotate the tray 250 on which it is located upward and closes. At this time, the other tray 250 linked with the tray 250 is synchronously closed, and during the closing process of the tray 250, the opening and closing drive component 300 at a suitable position drives the release arm 283 of the opening and closing control component 280 to rotate to the release position to prevent the support member 281 thereon from hindering the tray 250 from rotating upward and closing, and when the reset roller moves to the top of the reset slope 700, the tray 250 is completely closed. At this time, the release arm 283 of the opening and closing control component 280 can rotate in the opposite direction to the supporting position to support the tray 250 in the closed state.

[0046] As attached Figure 1 As shown, in order to prevent the tray sorting trolley 200 from being abnormally occupied for a long time, an abnormal unloading component 800 located upstream of the reset component and close to the reset component is provided at the track 100, and the abnormal unloading component 800 is used to open the tray 250 of the tray sorting trolley 200 passing through it. The specific structure of the abnormal unloading component 800 is the same as the structure of the opening and closing drive component 300, which will not be described here; more preferably, the abnormal unloading component is a blocking wheel in a fixed position, and the blocking wheel can block the force-bearing part of the release arm moving through it to enable the release arm to rotate to the release position.

[0047] As attached Figure 1 , Attachment Figure 7 As shown, a detection component 900 is also provided on the side of the track. The detection component 900 detects the force-bearing part of the release arm on each pallet sorting trolley passing through it through a through-beam sensor. When the force-bearing part of the release arm on the pallet sorting trolley passes through the through-beam sensor, the through-beam sensor can detect the force-bearing part, so that it can be determined that the state of the pallet sorting trolley is normal. On the contrary, if the force-bearing part of the force-bearing arm on the pallet sorting trolley passes through the through-beam sensor, the through-beam sensor cannot detect the force-bearing part, then it is determined that the pallet sorting trolley is abnormal. At the same time, the detection component can be used to determine the moving speed of the pallet sorting trolley along the track, specifically, it is determined according to the time difference when the through-beam sensor detects the force-bearing parts of two adjacent pallet sorting trolleys and the distance between the force-bearing parts of two adjacent pallet sorting trolleys.

[0048] When the entire tray sorting machine is working, the parcels that have been determined to be sorted at the sorting position can be placed on the predetermined tray sorting trolley 200 through the automated package supply platform. After the tray sorting trolley 200 is driven by the linear motor primary component 500 and the linear motor secondary component 201 to move along the track 100 to the sorting position to which the parcel is to be sorted, the driving wheel 310 of the opening and closing driving component 300 corresponding to the sorting position is lifted to a position with a height equivalent to that of the release arm 283 on the tray sorting trolley 200. When the tray sorting trolley 200 moves to the driving wheel 310, the force-bearing portion 287 of the release arm 283 is blocked by the driving wheel 310, so that the release arm 283 rotates to move the support member 281 to the release position. At this time, the tray 250 opens under the action of its own gravity and the gravity of the parcel, so that the parcel falls into the sorting position to be sorted to complete the sorting. When the tray sorting trolley 200 that has completed sorting continues to move along the track 100 to the reset assembly, the tray 250 returns to the closed state, and then the tray sorting trolley 200 moves to the bag loading position again to load the bag. Of course, the bag loading can also be done manually, and after loading the bag, the barcode information on the package on the tray sorting trolley 200 is read by the top surface barcode reader and / or the side barcode reader to determine the sorting position to which the package is to be sorted.

[0049] Example 2 This embodiment discloses a tray 250 sorting system, including any of the tray sorting machines described above.

[0050] There are many implementation methods of the present invention, and all technical solutions formed by equivalent transformation or equivalent transformation fall within the protection scope of the present invention.

Claims

1. A tray sorting machine, comprising a track and a circle of tray sorting trolleys moving along the track, characterized in that: A linear motor secondary assembly is arranged above the side frame on one side of the tray sorting trolley, a fixing frame is arranged at a setting position of the track on the corresponding side of the linear motor secondary assembly, and a linear motor primary assembly matching with the linear motor secondary assembly and used for driving the tray sorting trolley to move along the track is arranged on the fixing frame; A row of first clamping wheels and / or a row of second clamping wheels are arranged on the fixed frame; when any of the tray sorting trolleys passes through the first clamping wheels, the first limiter is pressed on the top surface of the cover plate where the linear motor secondary assembly of the tray sorting trolley is located; And / or when any of the tray sorting trolleys passes through the second clamping wheel, the second clamping wheel presses on the top surface of the side frame where the linear motor secondary assembly of the tray sorting trolley passing through it is located.

2. The tray sorting machine according to claim 1, characterized in that: The track includes an inner track and an outer track, the inner track is a grooved track opening upward, and a walking wheel and a limiting wheel are arranged below the side frame on the inner side of the pallet sorting trolley, and the axis of the limiting wheel extends in the vertical direction; the side frames on the inner sides of adjacent pallet sorting trolleys are connected through joint bearings; and first buffer pads are arranged at both ends of the side frame on the outer side of the pallet sorting trolley.

3. The tray sorting machine according to claim 1, characterized in that: The pallet sorting trolley includes support shafts connected to both ends of two side frames and four pallets rotatably connected to the two support shafts. Two pallets that are directly opposite to each other form a pallet pair that opens and closes simultaneously. An opening and closing control component is respectively provided on the two side frames of the frame. The opening and closing control component includes two supporting members. When the two pallets of a pallet pair remain in a closed state, each supporting member of the opening and closing control component on the outside of the pallet pair provides support for one pallet of the pallet pair.

4. The tray sorting machine according to claim 3, characterized in that: A stopper matching the support member is arranged on one side of the tray close to the opening and closing control assembly driving the tray to open and close, and the stopper is close to the side of the tray away from the support axis around which the tray rotates.

5. The tray sorting machine according to claim 3, characterized in that: The opening and closing control assembly includes a vertical rotating shaft rotatably arranged on the side frame, a release arm located below the side frame is arranged on the vertical rotating shaft, two support members are arranged on the release arm, the release arm includes a force-bearing portion extending to the outside of the side frame, the force-bearing portion cooperates with the opening and closing drive assembly arranged on the side of the track to drive the release arm to rotate so as to switch between a release position and a support position, when in the release position, the support member does not provide support for the tray pair, and when in the support position, the support member provides support for the tray pair in a closed state, and the release arm is also connected to an elastic member that keeps it in the support position.

6. The tray sorting machine according to claim 5, characterized in that: The two pallets of a pallet pair are connected by a linkage arm connected to their outer ends, and a second buffer pad is arranged on the inner side of the side frame close to the pallet pair. When the pallet pair is in a fully opened state, the linkage arm is supported on the second buffer pad.

7. The tray sorting machine according to claim 6, characterized in that: A limiting member that rotates synchronously with the vertical rotating shaft is arranged above the vertical rotating shaft. When the tray pair is opened, the limiting member presses on the top of the linkage arm or on the top of the protrusion on the side of the linkage arm.

8. The tray sorting machine according to claim 1, characterized in that: The opening and closing drive assembly includes a driving wheel whose axis extends in a vertical direction, and the driving wheel is connected to a lifting drive that drives it to adjust between a first height and a second height. At the first height, the driving wheel is adapted to the height of a release arm of the opening and closing control assembly; at the second height, the driving wheel is located above or below the release arm.

9. The tray sorting machine according to any one of claims 1 to 8, characterized in that: The track is provided with a reset component for switching the pallet of the pallet sorting trolley passing through it from an open state to a closed state, and the track is provided with an abnormal unloading component located upstream of the reset component and close to the reset component, and the abnormal unloading component is used to open the pallet of the pallet sorting trolley passing through it.

10. Pallet sorting system, characterized by: Comprising a tray sorting machine as described in any one of claims 1-9.

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