WO2022057228A1 - 链输送机构和分拣系统 - Google Patents

链输送机构和分拣系统 Download PDF

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Publication number
WO2022057228A1
WO2022057228A1 PCT/CN2021/082453 CN2021082453W WO2022057228A1 WO 2022057228 A1 WO2022057228 A1 WO 2022057228A1 CN 2021082453 W CN2021082453 W CN 2021082453W WO 2022057228 A1 WO2022057228 A1 WO 2022057228A1
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WO
WIPO (PCT)
Prior art keywords
wheel
shaft
chain
hole
sprocket
Prior art date
Application number
PCT/CN2021/082453
Other languages
English (en)
French (fr)
Inventor
单文君
吴明福
宋国库
Original Assignee
北京京东乾石科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 北京京东乾石科技有限公司 filed Critical 北京京东乾石科技有限公司
Priority to US18/245,958 priority Critical patent/US20230365336A1/en
Priority to JP2022572761A priority patent/JP2023541750A/ja
Priority to EP21868067.6A priority patent/EP4129868A4/en
Publication of WO2022057228A1 publication Critical patent/WO2022057228A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G17/00—Conveyors having an endless traction element, e.g. a chain, transmitting movement to a continuous or substantially-continuous load-carrying surface or to a series of individual load-carriers; Endless-chain conveyors in which the chains form the load-carrying surface
    • B65G17/06—Conveyors having an endless traction element, e.g. a chain, transmitting movement to a continuous or substantially-continuous load-carrying surface or to a series of individual load-carriers; Endless-chain conveyors in which the chains form the load-carrying surface having a load-carrying surface formed by a series of interconnected, e.g. longitudinal, links, plates, or platforms
    • B65G17/067—Conveyors having an endless traction element, e.g. a chain, transmitting movement to a continuous or substantially-continuous load-carrying surface or to a series of individual load-carriers; Endless-chain conveyors in which the chains form the load-carrying surface having a load-carrying surface formed by a series of interconnected, e.g. longitudinal, links, plates, or platforms the load carrying surface being formed by plates or platforms attached to more than one traction element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
    • B65G47/74—Feeding, transfer, or discharging devices of particular kinds or types
    • B65G47/94—Devices for flexing or tilting travelling structures; Throw-off carriages
    • B65G47/96—Devices for tilting links or platform
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G17/00—Conveyors having an endless traction element, e.g. a chain, transmitting movement to a continuous or substantially-continuous load-carrying surface or to a series of individual load-carriers; Endless-chain conveyors in which the chains form the load-carrying surface
    • B65G17/12—Conveyors having an endless traction element, e.g. a chain, transmitting movement to a continuous or substantially-continuous load-carrying surface or to a series of individual load-carriers; Endless-chain conveyors in which the chains form the load-carrying surface comprising a series of individual load-carriers fixed, or normally fixed, relative to traction element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G17/00—Conveyors having an endless traction element, e.g. a chain, transmitting movement to a continuous or substantially-continuous load-carrying surface or to a series of individual load-carriers; Endless-chain conveyors in which the chains form the load-carrying surface
    • B65G17/30—Details; Auxiliary devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G17/00—Conveyors having an endless traction element, e.g. a chain, transmitting movement to a continuous or substantially-continuous load-carrying surface or to a series of individual load-carriers; Endless-chain conveyors in which the chains form the load-carrying surface
    • B65G17/30—Details; Auxiliary devices
    • B65G17/32—Individual load-carriers
    • B65G17/34—Individual load-carriers having flat surfaces, e.g. platforms, grids, forks
    • B65G17/345—Individual load-carriers having flat surfaces, e.g. platforms, grids, forks the surfaces being equipped with a conveyor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G17/00—Conveyors having an endless traction element, e.g. a chain, transmitting movement to a continuous or substantially-continuous load-carrying surface or to a series of individual load-carriers; Endless-chain conveyors in which the chains form the load-carrying surface
    • B65G17/30—Details; Auxiliary devices
    • B65G17/38—Chains or like traction elements; Connections between traction elements and load-carriers
    • B65G17/42—Attaching load carriers to traction elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G17/00—Conveyors having an endless traction element, e.g. a chain, transmitting movement to a continuous or substantially-continuous load-carrying surface or to a series of individual load-carriers; Endless-chain conveyors in which the chains form the load-carrying surface
    • B65G17/30—Details; Auxiliary devices
    • B65G17/48—Controlling attitudes of load-carriers during movement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G23/00—Driving gear for endless conveyors; Belt- or chain-tensioning arrangements
    • B65G23/02—Belt- or chain-engaging elements
    • B65G23/04—Drums, rollers, or wheels
    • B65G23/06—Drums, rollers, or wheels with projections engaging abutments on belts or chains, e.g. sprocket wheels

Definitions

  • the present disclosure is based on the Chinese application with the application number of 202010997442.3 and the filing date of September 21, 2020, and claims its priority.
  • the disclosure of the Chinese application is hereby incorporated into the present disclosure as a whole.
  • the present disclosure relates to the technical field of sorting, and in particular, to a chain conveying mechanism and a sorting system.
  • the trolleys are dragged by chains.
  • the trolley When the trolley reaches the sprocket, it will turn circumferentially along the sprocket to complete the transfer between different layers.
  • a technical problem to be solved by the present disclosure is to improve the turning stability of the trolley at the sprocket.
  • a chain conveying mechanism which includes:
  • Chain transmission mechanism including chain and sprocket, the chain rotates under the drive of the sprocket;
  • the trolley is arranged on the chain and rotates together with the chain.
  • the trolley includes a vehicle body and two wheel sets connected to opposite sides of the vehicle body.
  • the wheel set includes a first wheel and a second wheel arranged at intervals on the same side of the vehicle body. ;and
  • the linkage mechanism corresponds to the wheel set one-to-one, and connects the chain with the first wheel and the second wheel, so that the first wheel and the second wheel can swing relative to each other, so as to change the distance between the first wheel and the second wheel.
  • the linkage mechanism includes a support seat, a swing arm, a first shaft and a second shaft
  • the support seat is located between the chain and the wheel set and is connected with the vehicle body
  • the first shaft passes through the support seat and connects the chain and the first shaft
  • the first end of the swing arm is swingably connected to the support base
  • the second shaft passes through the second end of the swing arm opposite to the first end and connects the chain and the second wheel.
  • the linkage mechanism includes a swing shaft, the swing shaft is rotatably connected with the support base, and the swing shaft is connected with the first end of the swing arm in a non-rotatable manner.
  • the first end of the swing arm is provided with a connection hole
  • the end of the connection hole away from the vehicle body is in an oval shape
  • the swing shaft includes an oval portion
  • the oval portion is matched with the end of the connection hole away from the vehicle body
  • the support base is provided with a limiting portion, and the limiting portion limits the swinging displacement of the swing arm.
  • the limiting portion includes a limiting slot, a side wall of the limiting slot is provided with a notch, the first end of the swing arm is accommodated in the limiting slot, and the second end of the swing arm protrudes from the notch, The side wall of the limiting groove limits the swinging displacement of the swing arm.
  • the linkage mechanism further includes a third shaft and a fourth shaft, and the support base is connected with the vehicle body through the third shaft and the fourth shaft.
  • the support seat is provided with a connecting column, a first hole portion and a second hole portion
  • the linkage mechanism further includes a matching seat and a limiting member
  • the matching seat is provided with a through hole, a third hole portion and a fourth hole portion.
  • the hole part, the connecting post is non-rotatably inserted into the through hole
  • the third hole part cooperates with the first hole part to form a closed first installation hole
  • the fourth hole part cooperates with the second hole part to form a closed second installation hole
  • the third hole part cooperates with the second hole part to form a closed second installation hole.
  • the three shafts and the fourth shaft are respectively inserted into the first installation hole and the second installation hole, and the limiter restricts the axial displacement of the third shaft and the fourth shaft.
  • the connecting column is provided with a convex portion, the convex portion extends from the connecting column toward the radial outer side of the connecting column, the through hole is provided with a groove, and the groove is recessed from the side wall of the through hole toward the radial outer side of the through hole, and the convex portion is connected to the radial outer side of the through hole.
  • a groove fit to limit the relative rotation of the connecting post and the through hole; and/or,
  • the limiting member includes a body portion, a first snap ring and a second snap ring, the body portion is snapped on the mating seat, the first snap ring and the second snap ring are both arranged on the body portion, and are respectively stuck on the third shaft and the second snap ring. on the fourth shaft to limit the axial displacement of the third and fourth shafts.
  • the chain conveying mechanism further includes a guide rail, which is arranged at the sprocket and supports the wheel set when the trolley turns along the circumferential direction of the sprocket.
  • the guide rail includes at least one of the following:
  • first track located between the sprocket and the chain and at least partially above the center of the sprocket, the first track including a first arcuate segment extending along the circumference of the sprocket;
  • a second track located on the side of the chain remote from the sprocket and at least partially below the center of the sprocket, includes a second arcuate segment extending circumferentially of the sprocket.
  • the guide rail includes a first track and a second track, the first and second arcuate segments being staggered in the circumferential direction of the sprocket.
  • the first track further includes a first straight section, the first straight section is connected to an end of the first arc section away from the outer side of the sprocket; and/or, the second track further includes a second straight section The second straight segment is connected to one end of the second arc segment away from the outer side of the sprocket.
  • the cart is a sorting cart.
  • the present disclosure additionally provides a sorting system including the chain conveying mechanism of various embodiments of the present disclosure.
  • FIG. 1 is a partial structural schematic diagram of a chain conveying mechanism in some embodiments of the present disclosure.
  • FIG. 2 is an enlarged view of part I of FIG. 1 .
  • Figure 3 is a schematic diagram of the installation of the linkage mechanism.
  • FIG. 4 is a perspective view of the combined structure of the linkage mechanism, the chain and the wheel set.
  • FIG. 5 is an exploded view of FIG. 4 .
  • FIG. 6 is a front view of FIG. 4 .
  • FIG. 7 is a first perspective view of the support base.
  • FIG. 8 is a second perspective view of the support base.
  • FIG. 9 is a first perspective view of the swing arm.
  • FIG. 10 is a second perspective view of the swing arm.
  • Fig. 11 is a perspective view of the pendulum shaft.
  • orientations such as “front, rear, top, bottom, left, right", “horizontal, vertical, vertical, horizontal” and “top, bottom” indicate the orientation Or the positional relationship is usually based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present disclosure and simplifying the description, and these orientations do not indicate or imply the indicated device or element unless otherwise stated. It must have a specific orientation or be constructed and operated in a specific orientation, so it should not be construed as a limitation on the protection scope of the present disclosure; the orientation words “inside and outside” refer to the inside and outside relative to the outline of each component itself.
  • the chain conveying mechanism 10 is widely used in equipment such as the sorting system 100 to realize the conveying and sorting of articles.
  • the chain conveying mechanism 10 includes a chain transmission mechanism 1 and a trolley 2 .
  • the chain transmission mechanism 1 includes a chain 11 and a sprocket 12 .
  • the chain 11 is wound around the two sprockets 12 .
  • One of the sprockets 12 is used as a driving sprocket, and the other sprocket 12 is used as a driven sprocket.
  • the chain 11 can be rotated under the driving of the sprocket 12 .
  • the chain 11 can use a small-pitch chain.
  • the polygon effect refers to the speed inhomogeneity caused by the polygon meshing drive to the chain drive. The larger the pitch of the chain, the more obvious the polygon effect.
  • the trolley 2 is arranged on the chain 11 and rotates together with the chain 11 .
  • the trolley 2 includes a vehicle body 21 and two wheel sets 22 connected to opposite sides of the vehicle body 21 .
  • the wheel sets 22 are connected with the chain 11 , so that the chain 11 can drag the trolley 2 to rotate together.
  • the wheel set 22 includes a first wheel 23 and a second wheel 24 which are arranged at intervals on the same side of the vehicle body 21 .
  • the first wheel 23 and the second wheel 24 are adjacent to each other and are arranged in sequence along the movement direction of the trolley 2 on the upper layer, in other words, along the movement direction of the trolley 2 on the upper layer, the first wheel 23 is located at the position of the second wheel 24. Upstream, the second wheel 24 is located downstream of the first wheel 23 and adjacent to the first wheel 23 .
  • the pitch of the chain 11 is small, the first wheel 23 and the second wheel 24 are connected on different chain links.
  • the trolley 2 further includes a sorting mechanism 25 .
  • the sorting mechanism 25 is arranged on the vehicle body 21, and is used to laterally transport the items carried on the trolley 2 when the trolley 2 reaches the target sorting position, so that the items fall on the target sorting position to complete the sorting process.
  • the trolley 2 at this time is a sorting trolley.
  • the trolley 2 moves linearly.
  • the trolley 2 will turn and move along the circumferential direction of the sprocket 12 from one layer to another to realize the transfer between different layers. .
  • the distance between the first wheel 23 and the second wheel 24 is fixed.
  • the trolley 2 cannot adapt to the chain 11 , especially the different links of the small-pitch chain 11 .
  • the distance between them varies, therefore, making smooth turns difficult and increasing wear and tear.
  • the distance between the first wheel 23 and the second wheel 24 refers to the distance between the center of the first wheel 23 and the center of the second wheel 24, which may also be referred to as the wheel base.
  • the trolley 2 is not supported during the turning process and is in a suspended state.
  • the chain 11, the sprocket 12 and the trolley 2 will be greatly impacted, which affects the turning stability and increases noise.
  • the present disclosure improves the structure of the chain conveying mechanism 10 to improve the turning stability of the trolley 2 , reduce wear and noise, improve the operational reliability of the chain conveying mechanism 10 , and prolong the service life of the chain conveying mechanism 10 .
  • the chain conveying mechanism 10 further includes a linkage mechanism 3 .
  • the linkage mechanism 3 corresponds to the wheel set 22 one-to-one, and connects the chain 11 with the first wheel 23 and the second wheel 24, so that the first wheel 23 and the second wheel 24 can swing relative to each other, so as to change the first wheel 23 and the second wheel 24 distances between.
  • Figures 2 and 3 show the situation when the cart 2 turns and does not turn, respectively. Comparing FIG. 2 and FIG. 3 , it can be seen that when the cart 2 turns, the distances between the different chain links connected to the first wheel 23 and the second wheel 24 are reduced compared with the situation when the cart 2 is not turning. At this time, if the distance between the first wheel 23 and the second wheel 24 is fixed and does not decrease accordingly, the trolley 2 cannot turn smoothly, and the turning stability is poor, which is also difficult to further reduce the pitch of the chain 11 in the related art It is difficult to further reduce the pitch of the chain 11, which in turn makes it difficult to further improve the polygon effect.
  • the linkage mechanism 3 By setting the linkage mechanism 3, the first wheel 23 and the second wheel 24 can swing relative to each other, and the distance between the two can be changed to adapt to different chain links connected to the first wheel 23 and the second wheel 24 during the turning process. The distance between them is changed, which effectively improves the turning stability and realizes a smoother turning process.
  • the linkage mechanism 3 prevents relative swing between the first wheel 23 and the second wheel 24, and the distance is L2, while as shown in FIG.
  • the linkage mechanism 3 includes a support base 31 , a swing arm 32 , a first shaft 33 and a second shaft 34 .
  • the support base 31 is located between the chain 11 and the wheel set 22 and is connected with the vehicle body 21 .
  • the first shaft 33 passes through the support base 31 and connects the chain 11 and the first wheel 23 .
  • the first end of the swing arm 32 is swingably connected to the support base 31 .
  • the second shaft 34 passes through a second end of the swing arm 32 opposite to the first end and connects the chain 11 and the second wheel 24 .
  • the second wheel 24 can drive the first end of the swing arm 32 to swing through the second shaft 34, so that the second wheel 24 can swing.
  • 24 oscillates relative to the first wheel 23, changing the wheel spacing between the two, and adapting to the change in the distance between the chain links connected by the two.
  • the set linkage mechanism 3 enables the wheel base to change with the change of the distance between the links connected to the first wheel 23 and the second wheel 24, and automatically adjusts the wheel base to the same distance as the first wheel during the turning process.
  • the distance between the chain links connected to the wheel 23 and the second wheel 24 is the same, so as to realize a more stable and smooth turning process.
  • the linkage mechanism 3 includes a swing shaft 35 , and the swing shaft 35 is rotatably connected to the support base 31 , and the swing shaft 35 is connected with the first end of the swing arm 32 in a non-rotatable manner. In this way, when the swing shaft 35 rotates relative to the support base 31 , the first end of the swing arm 32 can swing relative to the support base 31 .
  • the non-relatively rotatable connection between the swing shaft 35 and the first end of the swing arm 32 can be realized by arranging the swing shaft 35 and the swing arm 32 as an integral structure, or can also be realized in other ways.
  • the first end of the swing arm 32 is provided with a connecting hole 321
  • the end of the connecting hole 321 away from the vehicle body 21 is in an oval shape
  • the swing shaft 35 includes an oblong portion 352
  • the oblong portion 352 is matched with an end of the connecting hole 321 away from the vehicle body 21 .
  • the flat surface of the oval portion 352 is matched with the flat surface of the connecting hole 321, so that the relative swing between the swing shaft 35 and the first end of the swing arm 32 can be restricted, thereby realizing the non-rotatable between the swing shaft 35 and the first end of the swing arm 32. ground connection.
  • the support base 31 is provided with a limiting portion 31 e , and the limiting portion 31 e limits the swinging displacement of the swing arm 32 .
  • the limiting portion 31e limits the swinging displacement of the swing arm 32 .
  • the limiting portion 31e can be various.
  • the limiting portion 31e includes a limiting groove 313 , a side wall of the limiting groove 313 is provided with a notch 313a , and the first end of the swing arm 32 is accommodated in the limiting groove 313 , the second end of the swing arm 32 protrudes from the notch 313a.
  • the side wall of the limiting groove 313 limits the swinging displacement of the swing arm 32 .
  • the set limit slot 313 can use the side wall at the notch 313a to abut the swing arm 32 when the swing arm 32 swings to the limit position, so as to prevent the swing arm 32 from continuing to swing, so as to limit the swing displacement of the swing arm 32. .
  • the provided limiting slot 313 does not affect the connection between the second end of the swing arm 32 and the second shaft 34 .
  • the provided limiting groove 313 is also beneficial to prevent the first end of the swing arm 32 from protruding from the support seat 31 , reducing the size of the linkage mechanism 3 in the thickness direction of the support seat 31 and improving the smoothness of the surface of the linkage mechanism 3 .
  • the support base 31 is connected to the vehicle body 21 .
  • the linkage mechanism 3 further includes a third shaft 38 and a fourth shaft 39 , and the support base 31 passes through the third shaft 38 and the first shaft 39 .
  • the four shafts 39 are connected to the vehicle body 21 .
  • the support base 31 is provided with a connecting column 316 , a first hole portion 314 and a second hole portion 315
  • the linkage mechanism 3 further includes a matching seat 36 and a limiting member 37
  • the mating seat 36 is provided with a through hole 361 , a third hole portion 363 and a fourth hole portion 364 .
  • the connecting post 316 is non-rotatably inserted into the through hole 361 .
  • the third hole portion 363 cooperates with the first hole portion 314 to form a closed first mounting hole 36a.
  • the fourth hole portion 364 cooperates with the second hole portion 315 to form a closed second mounting hole 36b.
  • the third shaft 38 and the fourth shaft 39 are inserted into the first mounting hole 36a and the second mounting hole 36b, respectively.
  • the limiting member 37 limits the axial displacement of the third shaft 38 and the fourth shaft 39 .
  • the mating seat 36 and the supporting seat 31 can neither move nor rotate relative to each other, and the two can be firmly connected to form a connection between the third shaft 38 and the supporting seat 31 .
  • the third shaft 38 and the fourth shaft 39 cannot be disengaged from the first mounting hole 36 a and the second mounting hole 36 b , so that the vehicle body 21 and the support base 31 can be reliably connected.
  • connection post 316 is provided with a convex portion 317
  • the convex portion 317 is formed by the connection post 316 . It extends toward the radially outer side of the connecting column 316 .
  • the through hole 361 is provided with a groove 362 .
  • the groove 362 is recessed from the side wall of the through hole 361 toward the radial outer side of the through hole 361 , and the convex portion 317 is embedded in the groove 362 middle.
  • the limiting member 37 includes a body portion 371 , a first snap ring 372 and a second snap ring 373 .
  • the body portion 371 is clamped on the matching seat 36 .
  • the first snap ring 372 and the second snap ring 373 are both disposed on the main body portion 371, and clamped on the third shaft 38 and the fourth shaft 39, respectively.
  • the limiting member 37 can not only realize the snap connection with the mating seat 36, but also limit the axial displacement of the third shaft 38 and the fourth shaft 39 through the first snap ring 372 and the second snap ring 373, and also limit the axial displacement of the third shaft 38 and the fourth shaft 39.
  • the chain conveying mechanism 10 includes a guide rail 5 , and the guide rail 5 is arranged at the sprocket 12 and is connected to the trolley. 2. Support the wheel set 22 when turning along the circumferential direction of the sprocket 12.
  • the guide rails 5 provided can support the wheel set 22 when the trolley 2 turns and form a support for the trolley 2. Therefore, the problem of poor turning stability caused by the suspension of the trolley 2 can be improved, and the turning stability of the trolley 2 can be improved. It can reduce the impact on the chain 11, the sprocket 12 and the trolley 2, and reduce the noise.
  • the guide rail 5 may only support the wheel set 22 during part of the turning process of the trolley 2, or the guide rail 5 may also support the wheel set 22 during the entire turning process of the trolley 2 to achieve a smoother turning process.
  • the guide rail 5 includes a first rail 51 .
  • the first track 51 is located between the sprocket 12 and the chain 11 and at least partially above the center of the sprocket 12 .
  • the first track 51 includes a first arc-shaped segment 511 , and the first arc-shaped segment 511 extends along the circumferential direction of the sprocket 12 .
  • the wheel set 22 of the trolley 2 can press on the first arc section 511, and the first arc section
  • the 511 support prevents the trolley 2 from hanging in the air and improves the stability of the corresponding turning process.
  • the first half and the second half do not necessarily each account for half of the turning process, that is, the turning angles are not necessarily 90°, and one of the first half and the second half may be longer and the other shorter, that is, It is also possible that the turning angle corresponding to one of the first half and the second half is greater than 90°, and the other is less than 90°.
  • the guide rail 5 includes a second rail 52 .
  • the second track 52 is located on the side of the chain 11 remote from the sprocket 12 and at least partially below the center of the sprocket 12 .
  • the second track 52 includes a second arc-shaped segment 521 extending along the circumferential direction of the sprocket 12 . Based on this setting, when the trolley 2 is in the first half of the turn from bottom to top, or the second half of the turn from top to bottom, the wheel set 22 of the trolley 2 can press on the second arc section 521, and the second arc section 521 support to prevent the trolley 2 from hanging in the air and achieve a relatively stable turning process.
  • the guide rail 5 includes both a first track 51 and a second track 52 , and the first arc segments 511 and the second arc segments 521 are staggered in the circumferential direction of the sprocket 12 .
  • the guide rail 5 can support the wheel set 22 during the entire turning process of the trolley 2, so as to realize continuous support for the trolley 2 during the turning process, thereby improving the stability of the entire turning process.
  • FIGS. 1-11 Next, the embodiments shown in FIGS. 1-11 will be further described.
  • the chain conveying mechanism 10 includes a chain transmission mechanism 1 , a trolley 2 , a linkage mechanism 3 and a guide rail 5 .
  • the chain transmission mechanism 1 is used to realize the driving of the trolley 2 , and includes a chain 11 and a sprocket 12 .
  • the chain 11 is wound around the sprocket 12 and is driven by the sprocket 12 to rotate.
  • the trolley 2 is a sorting trolley, which includes a vehicle body 21 , a wheel set 22 and a sorting mechanism 25 .
  • the wheel set 22 and the sorting mechanism 25 are both arranged on the vehicle body 21 and are respectively used to realize the walking function and the sorting function of the trolley 2 .
  • the sorting mechanism 25 includes a belt transmission mechanism, and the transmission direction of the belt transmission mechanism intersects (for example, vertical) with the transmission direction of the chain 11, so as to unload the articles carried on the belt transmission mechanism from the trolley 2 to complete the sorting.
  • Two wheel sets 22 are disposed on opposite sides of the vehicle body 21 , and each wheel set 22 includes a first wheel 23 and a second wheel 24 arranged on the same side of the vehicle body 21 and sequentially arranged along the chain transmission direction.
  • the wheel set 22 is connected with the chain 11, so that when the chain 11 rotates, the cart 2 can be dragged to rotate together.
  • the first wheel 23 and the second wheel 24 of the same wheel set 22 are connected to different chain links.
  • the linkage mechanism 3 is arranged between the chain 11 and the wheel set 22, and corresponds to the wheel set 22 one-to-one, and is used to realize the connection between the chain 11 and the wheel set 22, and to enable the first wheel 23 and the second wheel 24 to be connected with the connection.
  • the distance between the chain links is changed and the relative swing is made to adjust the wheel base to be consistent with the distance between the connected chain links.
  • the linkage mechanism 3 includes a support seat 31 , a swing arm 32 , a swing shaft 35 , a matching seat 36 and a limiting member 37 .
  • the support base 31 is connected with the vehicle body 21 and is connected with the chain 11 , the first wheel 23 and the swing arm 32 .
  • the support base 31 is connected with the chain 11 and the first wheel 23 through the first shaft 33 , and is connected with the swing arm 32 through the swing shaft 35 , and is connected with the vehicle body 21 through the third shaft 38 and the fourth shaft 39 .
  • the support base 31 includes a first base body 31a and a second base body 31b.
  • the second seat body 31b is connected to the top of the first seat body 31a, and its surface facing the vehicle body 21 is flush with the surface of the first seat body 31a facing the vehicle body 21, and its thickness is smaller than that of the first seat body 31a, so that the A step 31c is formed between a surface of the second seat body 31b facing away from the vehicle body 21 and a surface of the first seat body 31a facing away from the vehicle body 21 .
  • the second seat body 31b is provided with a connecting column 316, and the connection between the second seat body 31b and the first seat body 31a is provided with a first hole portion 314 and a second hole portion 315.
  • the connecting column 316 extends along the thickness direction of the second seat body 31b, and the connecting column 316 is provided with a convex portion 317 that protrudes radially outward, which is used to realize the connection between the supporting seat 31 and the matching seat 36, and limit the The relative rotation of the support base 31 and the matching base 36 .
  • the first hole portion 314 and the second hole portion 315 are arranged at intervals, and the axes of the two are along the thickness direction of the support seat 31.
  • the upward part of the side wall of the two is open, so that the first hole portion 314 and the second hole portion 315 are open.
  • the two hole portions 315 are both non-closed holes for matching with the mating seat 36 to form a closed first mounting hole 36a and a second mounting hole 36b for the third shaft 38 and the fourth shaft 39 to pass through.
  • one end of the third shaft 38 and the fourth shaft 39 are both connected to the vehicle body 21 , and the other ends pass through the first mounting hole 36 a and the second mounting hole 36 b respectively, and are stopped by the limiting member 37 , so as to realize the connection between the support seat 31 and the vehicle body 21 .
  • the mating seat 36 is provided with a through hole 361 , a groove 362 , a third hole 363 and a fourth hole 364 .
  • the axis of the through hole 361 is along the thickness direction of the mating seat 36 for inserting the connecting post 316 .
  • the groove 362 is recessed from the side wall of the through hole 361 toward the radially outer side of the through hole 361 for inserting the convex portion 317 .
  • the limiting member 37 is configured as a spring clip, which includes a body portion 371 , a first snap ring 372 and a second snap ring 373 .
  • the body portion 371 is substantially L-shaped, and is clamped on the top of the mating seat 36 .
  • the first snap ring 372 and the second snap ring 373 are both connected to the body portion 371 and spaced apart from each other.
  • the side wall of the first snap ring 372 is open to the side away from the body portion 371 .
  • the side wall of the second snap ring 373 is open to the side away from the first snap ring 372 .
  • the matching seat 36 When assembled with the support seat 31, the matching seat 36 is placed on the step 31c and supported by the step 31c, at the same time, the connecting post 316 is inserted into the through hole 361, and the convex portion 317 is embedded in the groove 362, so that the matching seat 36 and the support The seats 31 cannot rotate relative to each other.
  • the third hole portion 363 and the fourth hole portion 364 are respectively butted with the first hole portion 314 and the second hole portion 315 to form a closed first mounting hole 36a and a second mounting hole.
  • the limiting member 37 is clamped on the mating seat 36, so that the first retaining ring 372 and the second retaining ring 373 are respectively set around the periphery of the first mounting hole 36a and the second mounting hole 36b, and are respectively snapped into In the shaft grooves 353 of the third shaft 38 and the fourth shaft 39 , the third shaft 38 and the fourth shaft 39 are prevented from coming out, and the supporting seat 31 and the matching seat 36 are prevented from being disengaged in the thickness direction.
  • the first seat body 31 a is provided with a first shaft hole 311 , a swing shaft hole 312 , an escape groove 31 d and a limit groove 313 .
  • the first shaft hole 311 and the swing shaft hole 312 are spaced apart, and respectively allow the first shaft 33 and the swing shaft 35 to pass through.
  • one end of the first shaft 33 is connected to the chain 11, and the other end passes through the first shaft hole 311, then is inserted into the first wheel 23, and is stopped by the shaft card 41 to realize the connection between the chain 11 and the first shaft 31. Connection of wheel 23.
  • a bearing 42 and a washer 43 sleeved on the first shaft 33 can be arranged between the first wheel 23 and the support base 31 to facilitate the rotation of the first shaft 33 .
  • the avoidance groove 31d is disposed between the first shaft hole 311 and the pendulum shaft hole 312 and is substantially V-shaped, and is used to avoid other structures to avoid interference.
  • the limiting groove 313 is arranged around the periphery of the swing shaft hole 312 for accommodating the first end of the swing arm 32 and restricting the swing displacement of the swing arm 32 .
  • the side wall of the limiting groove 313 is an arc surface, and the part of the side wall facing the second wheel 24 is open to form a notch 313 a.
  • the first end of the swing arm 32 is swingably embedded in the limiting groove 313 , and the second end of the swing arm 32 protrudes from the notch 313 a and is connected to the chain 11 and the second wheel 24 through the second shaft 34 .
  • the swing arm 32 swings to both sides of the notch 313a, it will be blocked by the side walls of the limiting slot 313 and cannot continue swinging, thereby limiting the swinging displacement of the swing arm 32 and preventing the swing arm 32 from swinging excessively.
  • the swing arm 32 includes a cylindrical portion 32a and an extension portion 32b.
  • the column portion 32 a extends along the thickness direction of the swing arm 32 .
  • the extension part 32b is connected to the side wall of the column body part 32a, and the column body part 32a and the column body part 32a constitute the first end and the second end of the swing arm 32 respectively.
  • the surface of the extension portion 32b facing away from the vehicle body 21 is flush with the surface of the column body portion 32a facing away from the vehicle body 21, and the thickness of the extension portion 32b is smaller than the thickness of the column body portion 32a, so that the column body portion 32a faces toward the extension portion 32b relative to the extension portion 32b.
  • the cylindrical portion 32a is provided with a second shaft hole 322 for the second shaft 34 to pass through.
  • One end of the second shaft 34 is connected to the chain 11 , and the other end is inserted into the second wheel 24 after passing through the second shaft hole 322 , and is stopped by the shaft card 41 to realize the connection between the chain 11 and the second wheel 24 .
  • a bearing 42 and a washer 43 sleeved on the second shaft 34 can be disposed between the second wheel 24 and the cylindrical portion 32 a to facilitate the rotation of the second shaft 34 .
  • the extension portion 32b is provided with a connecting hole 321 for the swing shaft 35 to pass through, so as to realize the connection between the swing shaft 35 and the first end of the swing arm 32 .
  • FIG. 11 shows the structure of the pendulum shaft 35 .
  • the swing shaft 35 includes a shaft body 351 and an oblong portion 352 connected to one end of the shaft body 351 .
  • the shaft body 351 has a cylindrical shape, and an end of the shaft body 351 away from the oblong portion 352 is provided with a shaft groove 353 for installing the shaft card 41 .
  • the cross section of the oval portion 352 is oval.
  • one end of the connecting hole 321 away from the vehicle body 21 is in an oval shape. In this way, as shown in FIG.
  • the first shaft 33 provided on the chain 11 can be passed through the first shaft hole 311 on the support base 31 , inserted into the first wheel 23 , and inserted into the first wheel 23 .
  • the swing shaft 35 passes through the connecting hole 321 at the first end of the swing arm 32 and the swing shaft hole 312 on the support base 31 in sequence, and connects the second shaft 34 provided on the chain 11 from the second shaft hole at the second end of the swing arm 32 322 and inserted into the second wheel 24.
  • the swing arm 32 can drive the second wheel 24 to swing relative to the first wheel 23 and accordingly change the wheel track .
  • the guide rail 5 is used to support the wheel set 22 during the turning process of the trolley 2 to support the trolley 2 .
  • the guide rail 5 includes a first rail 51 and a second rail 52 .
  • the first rail 51 is located between the sprocket 12 and the chain 11 and is located above the center of the chain 12 .
  • the second rail 52 is located on the side of the chain 11 away from the sprocket 12 , and extends upward from a position below the center of the sprocket 12 to above the center of the sprocket 12 .
  • the first track 51 includes a first arcuate segment 511 and a first straight segment 512 .
  • the first arc segment 511 extends downward along the circumferential direction of the sprocket 12 from a position just above the center of the sprocket 12 .
  • the first straight section 512 is connected to one end of the first arc section 511 away from the outside of the sprocket 12 .
  • the outside of the sprocket 12 refers to the side of the sprocket 12 away from the other sprocket 12 .
  • the first straight section 512 is connected to one end of the first arc section 511 away from the outer side of the sprocket 12 , which means that the first straight section 512 extends from the first arc section 511 toward the other sprocket 12 .
  • the second rail 52 includes a second arcuate segment 521 and a second straight segment 522 .
  • the second arc segment 521 extends upward along the circumferential direction of the sprocket 12 from the position just below the center of the sprocket 12 until it extends above the center of the sprocket 12 , and is aligned with the first arc segment 511 in the circumferential direction of the sprocket 12 . staggered.
  • the second straight section 522 is connected to one end of the second arc section 521 away from the outside of the sprocket 12 , in other words, the second straight section 522 extends from the second arc section 521 toward the other sprocket 12 .
  • the guide rail 5 can continuously support the trolley 2 during the turning process of the trolley 2 .
  • the first arc segment 511 can hold the wheel set 22 to form a support for the trolley 2 and prevent the trolley 2 from hanging in the air
  • the second arc segment 521 can hold the wheel set 22 to form a support for the trolley 2 and prevent the trolley 2 from hanging in the air .
  • the first straight section 512 and the second straight section 522 are arranged, which is beneficial for the guide wheel set 22 to go up and down the first arc-shaped section 511 and the second straight section 522 smoothly.
  • Two arc-shaped sections 521 to achieve a smoother conveying process.
  • the chain conveying mechanism 10 of this embodiment can effectively improve the turning stability of the trolley 2 under the action of the linkage mechanism 3 and the guide rail 5 .
  • the wheel set 22 of the trolley 2 is pressed on the first arc segment 511, and then, When the trolley 2 continues to turn downward, the wheel set 22 is changed to press on the second arc section 521, so that the wheel set 22 is supported by the guide rail 5 during the entire turning process, reducing the impact on the chain 11, the sprocket 12 and the trolley.
  • the group 22 can always keep in contact with the guide rail 5 and is continuously supported by the guide rail 5 to realize a smooth turning process with low vibration, low impact and low noise.
  • the turning stability of the trolley 2 is improved, it is beneficial to reduce wear and noise, improve the operation reliability of the chain conveying mechanism 10 and the sorting system 100 , and prolong the service life of the chain conveying mechanism 10 and the sorting system 100 .
  • the wheel base of the trolley 2 can adapt to the change of the distance between different chain links, so it is also beneficial to further reduce the pitch of the chain 11, which is beneficial to further reduce the polygonal shape of the chain 11. effect.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chain Conveyers (AREA)
  • Handcart (AREA)
  • Discharge Of Articles From Conveyors (AREA)

Abstract

一种链输送机构(10)和分拣系统，其中链输送机构(10)，包括：链传动机构(1)，包括链条(11)和链轮(12)，链条(11)在链轮(12)的驱动下转动；小车(2)，设置在链条(11)上，并随着链条(11)一起转动，小车(2)包括车体(21)和连接于车体(21)相对两侧的两个轮组(22)，轮组(22)包括间隔布置于车体(21)同一侧的第一轮(23)和第二轮(24)；和联动机构(3)，与轮组(22)一一对应，并连接链条(11)与第一轮(23)和第二轮(24)，使第一轮(23)和第二轮(24)可相对摆动，以改变第一轮(23)和第二轮(24)之间的间距。基于此，可有效提升小车(2)在链轮(12)处的转弯平稳性。

Description

链输送机构和分拣系统
相关申请的交叉引用
本公开是以申请号为202010997442.3，申请日为2020年9月21日的中国申请为基础，并主张其优先权，该中国申请的公开内容在此作为整体引入本公开中。
技术领域
本公开涉及分拣技术领域，特别涉及一种链输送机构和分拣系统。
背景技术
在一些系统中，例如，在直线分拣系统中，小车由链条拖动。当小车到达链轮处时，会沿链轮周向转弯，以完成在不同层间的转移。
相关技术中，小车在链轮处的转弯平稳性较差，容易加剧磨损，增大噪音，因此亟需改进。
发明内容
本公开所要解决的一个技术问题是：提升小车在链轮处的转弯平稳性。
为了解决上述技术问题，本公开提供了一种链输送机构，其包括：
链传动机构，包括链条和链轮，链条在链轮的驱动下转动；
小车，设置在链条上，并随着链条一起转动，小车包括车体和连接于车体相对两侧的两个轮组，轮组包括间隔布置于车体同一侧的第一轮和第二轮；和
联动机构，与轮组一一对应，并连接链条与第一轮和第二轮，使第一轮和第二轮可相对摆动，以改变第一轮和第二轮之间的间距。
在一些实施例中，联动机构包括支撑座、摆臂、第一轴和第二轴，支撑座位于链条与轮组之间并与车体连接，第一轴穿过支撑座并连接链条与第一轮，摆臂的第一端可摆动地连接于支撑座，第二轴穿过摆臂的与第一端相对的第二端并连接链条与第二轮。
在一些实施例中，联动机构包括摆轴，摆轴与支撑座转动连接，且摆轴与摆臂的第一端不可相对转动地连接。
在一些实施例中，摆臂的第一端设有连接孔，连接孔的远离车体的一端呈长圆形， 且摆轴包括长圆部，长圆部与连接孔的远离车体的一端配合，以实现摆轴与摆臂第一端之间不可相对转动地连接。
在一些实施例中，支撑座上设有限位部，限位部限制摆臂的摆动位移。
在一些实施例中，限位部包括限位槽，限位槽的侧壁上设有缺口，摆臂的第一端容置于限位槽中，摆臂的第二端由缺口伸出，限位槽的侧壁限制摆臂的摆动位移。
在一些实施例中，联动机构还包括第三轴和第四轴，支撑座通过第三轴和第四轴与车体连接。
在一些实施例中，支撑座上设有连接柱、第一孔部和第二孔部，联动机构还包括配合座和限位件，配合座上设有通孔、第三孔部和第四孔部，连接柱不可转动地插入通孔中，第三孔部与第一孔部配合形成封闭的第一安装孔，第四孔部与第二孔部配合形成封闭的第二安装孔，第三轴和第四轴分别插入第一安装孔和第二安装孔中，限位件限制第三轴和第四轴的轴向位移。
在一些实施例中，
连接柱上设有凸部，凸部由连接柱朝连接柱的径向外侧延伸，通孔上设有凹槽，凹槽由通孔的侧壁朝通孔的径向外侧凹陷，凸部与凹槽配合，以限制连接柱与通孔的相对转动；和/或，
限位件包括本体部、第一卡环和第二卡环，本体部卡接于配合座上，第一卡环和第二卡环均设置于本体部上，并分别卡在第三轴和第四轴上，以限制第三轴和第四轴的轴向位移。
在一些实施例中，链输送机构还包括导轨，导轨设置于链轮处，并在小车沿着链轮周向转弯时承托轮组。
在一些实施例中，导轨包括以下至少之一：
第一轨道，位于链轮与链条之间，并至少部分地位于链轮的中心的上方，第一轨道包括第一弧形段，第一弧形段沿着链轮的周向延伸；
第二轨道，位于链条的远离链轮的一侧，并至少部分地位于链轮的中心的下方，第二轨道包括第二弧形段，第二弧形段沿着链轮的周向延伸。
在一些实施例中，导轨包括第一轨道和第二轨道，第一弧形段和第二弧形段在链轮的周向上交错。
在一些实施例中，第一轨道还包括第一平直段，第一平直段连接于第一弧形段的远离链轮外侧的一端；和/或，第二轨道还包括第二平直段，第二平直段连接于第二弧 形段的远离链轮外侧的一端。
在一些实施例中，小车为分拣小车。
本公开另外还提供一种分拣系统，其包括本公开各实施例的链输送机构。
通过在链输送机构中设置联动机构，并利用联动机构使得小车同一侧相邻的第一轮和第二轮之间的间距可调，可以有效提升小车在链轮处的转弯平稳性。
通过以下参照附图对本公开的示例性实施例进行详细描述，本公开的其它特征及其优点将会变得清楚。
附图说明
为了更清楚地说明本公开实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本公开的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1为本公开一些实施例中链输送机构的部分结构示意图。
图2为图1的I局部放大图。
图3为联动机构的安装示意图。
图4为联动机构与链条和轮组的组合结构的立体图。
图5为图4的爆炸图。
图6为图4的主视图。
图7为支撑座的第一立体图。
图8为支撑座的第二立体图。
图9为摆臂的第一立体图。
图10为摆臂的第二立体图。
图11为摆轴的立体图。
具体实施方式
下面将结合本公开实施例中的附图，对本公开实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本公开一部分实施例，而不是全部的实施例。以下对至少一个示例性实施例的描述实际上仅仅是说明性的，决不作为对本公开及其应用或使用的任何限制。基于本公开中的实施例，本领域普通技术人员在没有开展创 造性劳动前提下所获得的所有其他实施例，都属于本公开保护的范围。
对于相关领域普通技术人员已知的技术、方法和设备可能不作详细讨论，但在适当情况下，所述技术、方法和设备应当被视为授权说明书的一部分。
在本公开的描述中，需要理解的是，方位词如“前、后、上、下、左、右”、“横向、竖向、垂直、水平”和“顶、底”等所指示的方位或位置关系通常是基于附图所示的方位或位置关系，仅是为了便于描述本公开和简化描述，在未作相反说明的情况下，这些方位词并不指示和暗示所指的装置或元件必须具有特定的方位或者以特定的方位构造和操作，因此不能理解为对本公开保护范围的限制；方位词“内、外”是指相对于各部件本身的轮廓的内外。
在本公开的描述中，需要理解的是，使用“第一”、“第二”等词语来限定零部件，仅仅是为了便于对相应零部件进行区别，如没有另行声明，上述词语并没有特殊含义，因此不能理解为对本公开保护范围的限制。
此外，下面所描述的本公开不同实施方式中所涉及的技术特征只要彼此之间未构成冲突就可以相互结合。
图1-图11示例性地示出了本公开链输送机构的结构。
链输送机构10被广泛应用于分拣系统100等设备中，用于实现物品的输送、分拣等。
参照图1，链输送机构10包括链传动机构1和小车2。
链传动机构1包括链条11和链轮12。链条11绕设于两个链轮12上。其中一个链轮12用作主动链轮，另一个链轮12则用作从动链轮。这样，链条11能在链轮12的驱动下转动。其中，为减轻多边形效应，减少振动，减轻磨损，链条11可以采用小节距链条。多边形效应是指由于多边形啮合传动给链传动带来的速度不均匀性。链条的节距越大，多边形效应越明显。
小车2设置在链条11上，并随着链条11一起转动。小车2包括车体21和连接于车体21相对两侧的两个轮组22，轮组22与链条11连接，使得链条11能拖动小车2一起转动。其中，轮组22包括间隔布置于车体21同一侧的第一轮23和第二轮24。第一轮23和第二轮24彼此相邻，并沿着小车2在上层的运动方向依次布置，换句话说，沿着小车2在上层的运动方向，第一轮23位于第二轮24的上游，第二轮24位于第一轮23的下游，并与第一轮23相邻。当链条11节距较小时，第一轮23和第二轮24连接在不同的链节上。
另外，当链输送机构10被应用于分拣系统100时，小车2还包括分拣机构25。分拣机构25设置于车体21上，用于在小车2到达目标分拣位置时，横向输送小车2上承载的物品，使物品落在目标分拣位置，完成分拣过程。此时的小车2为分拣小车。
工作过程中，当小车2位于主动链轮和从动链轮之间时，小车2直线运动。而当小车2运动至主动链轮或从动链轮处时，小车2会发生转弯，沿着链轮12的周向运动，由一层运动至另一层，实现在不同层之间的转移。
经过研究发现，以下两方面是造成相关技术中小车转弯平稳性较差的重要原因。
一方面，相关技术中，第一轮23和第二轮24之间的距离是固定的，这种情况下，转弯过程中，小车2无法适应链条11，尤其是小节距链条11的不同链节之间的距离变化，因此，难以平稳转弯，加剧磨损。可以理解，第一轮23和第二轮24之间的距离是指第一轮23中心与第二轮24中心之间的距离，也可以称为轮距。
另一方面，相关技术中，小车2在转弯过程中没有支撑，处于悬空状态，这种情况下，链条11、链轮12和小车2都会受到较大冲击，影响转弯平稳性，增加噪音。
基于上述发现，本公开对链输送机构10的结构进行改进，以提升小车2的转弯平稳性，减少磨损，降低噪音，提高链输送机构10的运行可靠性，延长链输送机构10的使用寿命。
其中，针对轮距不可调所带来的转弯平稳性较差的问题，参照图1-11，一些实施例中，链输送机构10还包括联动机构3。联动机构3与轮组22一一对应，并连接链条11与第一轮23和第二轮24，使第一轮23和第二轮24可相对摆动，以改变第一轮23和第二轮24之间的距离。
图2和图3分别示出了在小车2转弯和未转弯时的情况。比较图2和图3可知，与小车2未转弯时的情况相比，当小车2转弯时，第一轮23和第二轮24所连接的不同链节之间的距离会变小。此时，若第一轮23和第二轮24之间的距离固定，不随之变小，则小车2无法顺利转弯，转弯平稳性较差，这也是相关技术中链条11节距难以进一步减小的原因，而链条11节距难以进一步减小，又导致多边形效应难以进一步被改善。
而通过设置联动机构3，使得第一轮23和第二轮24可相对摆动，改变二者之间的距离，则可以适应转弯过程中第一轮23和第二轮24所连接的不同链节之间的距离变化，有效改善转弯平稳性，实现更加顺利的转弯过程。例如，如图3所示，当小车2未转弯时，联动机构3使第一轮23和第二轮24之间不发生相对摆动，距离为L2， 而如图2所示，当小车2由上向下开始转弯时，联动机构3使第一轮23和第二轮24之间发生相对摆动，距离由L2变为较小的L1，使第一轮23和第二轮24之间的距离随着所连接链节之间距离的减小而减小，实现更加平顺的转弯过程。
作为联动机构3的一种实施方式，参照图3-11，联动机构3包括支撑座31、摆臂32、第一轴33和第二轴34。支撑座31位于链条11与轮组22之间并与车体21连接。第一轴33穿过支撑座31并连接链条11与第一轮23。摆臂32的第一端可摆动地连接于支撑座31。第二轴34穿过摆臂32的与第一端相对的第二端并连接链条11与第二轮24。
基于上述设置，当第一轮23和第二轮24所连接链节之间的距离发生变化时，第二轮24可以通过第二轴34驱动摆臂32的第一端摆动，使第二轮24相对于第一轮23发生摆动，改变二者之间的轮距，适应二者所连接链节之间距离的变化。可见，所设置的联动机构3，使得轮距能够随着第一轮23和第二轮24所连接链节之间距离的变化而变化，自动在转弯过程中，将轮距调节至与第一轮23和第二轮24所连接链节之间的距离一致，实现更加平稳顺利的转弯过程。
其中，为了实现摆臂32第一端与支撑座31之间的可摆动连接，参照图4-11，在一些实施例中，联动机构3包括摆轴35，摆轴35与支撑座31转动连接，且摆轴35与摆臂32的第一端不可相对转动地连接。这样，摆轴35相对于支撑座31转动，即可实现摆臂32第一端相对于支撑座31的摆动。
而摆轴35与摆臂32的第一端之间不可相对转动的连接，既可以通过将摆轴35与摆臂32设置为一体结构来实现，或者，也可以采用其他方式实现。例如，参照图4-6以及图9-11，在一些实施例中，摆臂32的第一端设有连接孔321，连接孔321的远离车体21的一端呈长圆形，且摆轴35包括长圆部352，长圆部352与连接孔321的远离车体21的一端配合。利用长圆部352的平直面与连接孔321的平直面配合，可以限制摆轴35与摆臂32第一端之间的相对摆动，进而实现摆轴35与摆臂32第一端之间不可转动地连接。
另外，参照图7，在一些实施例中，支撑座31上设有限位部31e，限位部31e限制摆臂32的摆动位移。通过设置限位部31e来限制摆臂32的摆动位移，可以防止摆臂32带动第二轮24过度旋转，使联动机构3能够更加准确地将轮距控制在所需范围之内。
限位部31e的形式可以多样。例如，继续参照图7，在一些实施例中，限位部31e 包括限位槽313，限位槽313的侧壁上设有缺口313a，摆臂32的第一端容置于限位槽313中，摆臂32的第二端由缺口313a伸出。限位槽313的侧壁限制摆臂32的摆动位移。
所设置的限位槽313，可以在摆臂32摆动至极限位置时，利用缺口313a处的侧壁与摆臂32进行抵接，阻止摆臂32继续摆动，实现对摆臂32摆动位移的限制。同时，所设置的限位槽313，不影响摆臂32第二端与第二轴34的连接。另外，所设置的限位槽313，还有利于防止摆臂32第一端凸出于支撑座31，减小联动机构3在支撑座31厚度方向上的尺寸，提高联动机构3表面的平整性。
如前所述，支撑座31是与车体21连接的。作为实现支撑座31与车体21连接的一种方式，参照图3，在一些实施例中，联动机构3还包括第三轴38和第四轴39，支撑座31通过第三轴38和第四轴39与车体21连接。
具体地，参照图3-8，一些实施例中，支撑座31上设有连接柱316、第一孔部314和第二孔部315，且联动机构3还包括配合座36和限位件37。配合座36上设有通孔361、第三孔部363和第四孔部364。连接柱316不可转动地插入通孔361中。第三孔部363与第一孔部314配合形成封闭的第一安装孔36a。第四孔部364与第二孔部315配合形成封闭的第二安装孔36b。第三轴38和第四轴39分别插入第一安装孔36a和第二安装孔36b中。限位件37限制第三轴38和第四轴39的轴向位移。
在限位件37、连接柱316和通孔361的作用下，配合座36和支撑座31之间既无法相对移动，也无法相对转动，二者可以稳固地连接，形成供第三轴38和第四轴39插入的第一安装孔36a和第二安装孔36b。且在限位件37的作用下，第三轴38和第四轴39无法从第一安装孔36a和第二安装孔36b中脱出，可以实现车体21与支撑座31的可靠连接。
其中，为了限制连接柱316与通孔361的相对转动，参照图3、图5以及图7-8，在一些实施例中，连接柱316上设有凸部317，凸部317由连接柱316朝连接柱316的径向外侧延伸，同时，通孔361上设有凹槽362，凹槽362由通孔361的侧壁朝通孔361的径向外侧凹陷，且凸部317嵌入凹槽362中。这样，基于凸部17与凹槽362的配合，可以限制连接柱316与通孔361的相对转动。其中，为了清楚示出凹槽362，在图2、图3及图6中，凸部317并未位于凹槽362中。
作为限位件37的一种结构形式，参照图5和图6，限位件37包括本体部371、第一卡环372和第二卡环373。本体部371卡接于配合座36上。第一卡环372和第二卡 环373均设置于本体部371上，并分别卡在第三轴38和第四轴39上。这样，限位件37既可以实现与配合座36的卡接，又可以通过第一卡环372和第二卡环373限制第三轴38和第四轴39的轴向位移，同时还可以限制配合座36和支撑座31之间沿第三轴38轴向的相对位移。
另外，针对小车2在转弯过程中悬空所造成的转弯平稳性问题，参照图1-2，在一些实施例中，链输送机构10包括导轨5，导轨5设置于链轮12处，并在小车2沿着链轮12周向转弯时承托轮组22。
由于所设置的导轨5，能在小车2转弯时承托轮组22，对小车2形成支撑，因此，可以改善因小车2悬空所造成的转弯平稳性较差的问题，提升小车2的转弯平稳性，减少对链条11、链轮12和小车2的冲击，降低噪音。
其中，导轨5可以仅在小车2转弯的部分过程中承托轮组22，或者，导轨5也可以在小车2转弯的整个过程中均承托轮组22，以实现更平稳的转弯过程。
例如，参照图1，一些实施例中，导轨5包括第一轨道51。第一轨道51位于链轮12与链条11之间，并至少部分地位于链轮12的中心的上方。并且，第一轨道51包括第一弧形段511，第一弧形段511沿着链轮12的周向延伸。基于该设置，在小车2处于由上至下转弯的前半段，或者由下至上转弯的后半段，小车2的轮组22可以压在第一弧形段511上，由第一弧形段511承托，防止小车2悬空，改善相应转弯过程的平稳性。其中，前半段和后半段并不一定各占转弯过程的一半，即并不一定转弯角度各为90°，也可以前半段和后半段中之一较长，另一较短，即，也可以前半段和后半段中之一对应的转弯角度大于90°，另一小于90°。
再例如，参照图1，一些实施例中，导轨5包括第二轨道52。第二轨道52位于链条11的远离链轮12的一侧，并至少部分地位于链轮12的中心的下方。并且，第二轨道52包括第二弧形段521，第二弧形段521沿着链轮12的周向延伸。基于该设置，在小车2处于由下至上转弯的前半段，或者由上至下转弯的后半段，小车2的轮组22可以压在第二弧形段521上，由第二弧形段521承托，防止小车2悬空，实现较为平稳的转弯过程。
又例如，参照图1，一些实施例中，导轨5同时包括第一轨道51和第二轨道52，且第一弧形段511和第二弧形段521在链轮12的周向上交错。这样，导轨5可以在小车2转弯的整个过程中承托轮组22，实现转弯过程中对小车2的连续支撑，从而改善整个转弯过程的平稳性。
接下来对图1-11所示的实施例予以进一步描述。
如图1-11所示，在该实施例中，链输送机构10包括链传动机构1、小车2、联动机构3和导轨5。
链传动机构1用于实现对小车2的驱动，其包括链条11和链轮12。链条11环绕在链轮12上，在链轮12的驱动下转动。
小车2为分拣小车，其包括车体21、轮组22和分拣机构25。轮组22和分拣机构25均设置于车体21上，分别用于实现小车2的行走功能和分拣功能。其中，分拣机构25包括带传动机构，带传动机构的传送方向与链条11的传送方向相交(例如垂直)，以将承载于带传动机构上的物品从小车2上卸下，完成分拣。两个轮组22设置于车体21的相对两侧，且每个轮组22均包括布置于车体21同一侧且沿着链条传送方向依次布置的第一轮23和第二轮24。轮组22与链条11连接，使得链条11转动时，能拖动小车2一起转动。同一轮组22的第一轮23和第二轮24连接于不同的链节上。
联动机构3设置于链条11与轮组22之间，与轮组22一一对应，用于实现链条11与轮组22的连接，并使第一轮23和第二轮24能随着所连接链节之间距离的变化而相对摆动，以调节轮距与所连接链节间距离一致。
如图2-11所示，在该实施例中，联动机构3包括支撑座31、摆臂32、摆轴35、配合座36和限位件37。
支撑座31与车体21连接，并与链条11、第一轮23和摆臂32连接。其中，支撑座31通过第一轴33与链条11和第一轮23连接，并通过摆轴35与摆臂32连接，同时通过第三轴38和第四轴39与车体21连接。
具体地，如图7-8所示，在该实施例中，支撑座31包括第一座体31a和第二座体31b。第二座体31b连接于第一座体31a的顶部，其朝向车体21的表面与第一座体31a的朝向车体21的表面平齐，且其厚度小于第一座体31a，使得第二座体31b的背离车体21的表面与第一座体31a的背离车体21的表面之间形成台阶31c。
第二座体31b上设有连接柱316，且第二座体31b与第一座体31a的连接处设有第一孔部314和第二孔部315。连接柱316沿着第二座体31b的厚度方向延伸，且连接柱316上设有朝径向外侧凸出的凸部317，用于实现支撑座31与配合座36之间的连接，并限制支撑座31与配合座36的相对转动。第一孔部314和第二孔部315间隔设置，且二者的轴线均沿着支撑座31的厚度方向，同时，二者侧壁的朝上的部分敞开，使得第一孔部314和第二孔部315均成为非封闭孔，用于与配合座36配合，形成封闭 的第一安装孔36a和第二安装孔36b，以供第三轴38和第四轴39穿过。如图3所示，第三轴38和第四轴39的一端均与车体21连接，另一端则分别穿过第一安装孔36a和第二安装孔36b后，被限位件37止挡，以实现支撑座31与车体21的连接。
图4-6中示出了配合座36与限位件37的结构。如图4-6所示，在该实施例中，配合座36上设有通孔361、凹槽362、第三孔部363和第四孔部364。通孔361的轴线沿着配合座36的厚度方向，用于供连接柱316插入。凹槽362由通孔361的侧壁朝通孔361的径向外侧凹陷，用于供凸部317插入。限位件37被构造为弹簧卡，其包括本体部371、第一卡环372和第二卡环373。本体部371大致呈L形，其卡在配合座36的顶部。第一卡环372和第二卡环373均连接于本体部371上，并彼此间隔。第一卡环372的侧壁朝远离本体部371的一侧敞开。第二卡环373的侧壁朝远离第一卡环372的一侧敞开。
在与支撑座31组装时，配合座36被放置于台阶31c上，被台阶31c支撑，同时，连接柱316插入通孔361中，且凸部317嵌入凹槽362中，使得配合座36与支撑座31之间无法相对转动，此时，第三孔部363和第四孔部364分别与第一孔部314和第二孔部315对接，形成封闭的第一安装孔36a和第二安装孔36b；然后，将限位件37卡于配合座36上，使第一卡环372和第二卡环373分别围设于第一安装孔36a和第二安装孔36b的外围，并分别卡入第三轴38和第四轴39的轴槽353中，防止第三轴38和第四轴39脱出，并防止支撑座31和配合座36沿厚度方向脱开。
第一座体31a上设有第一轴孔311、摆轴孔312、避让槽31d和限位槽313。第一轴孔311和摆轴孔312间隔设置，分别供第一轴33和摆轴35穿过。如图5-6所示，第一轴33一端与链条11连接，另一端穿过第一轴孔311后，插入第一轮23中，并被轴卡41止挡，实现链条11与第一轮23的连接。第一轮23与支撑座31之间可以设置套设在第一轴33上的轴承42和垫圈43，以方便第一轴33转动。摆轴35一端与摆臂32连接，另一端穿过摆轴孔312后，被轴卡41止挡，实现支撑座31与摆臂32第一端的连接。避让槽31d设置于第一轴孔311和摆轴孔312之间，大致呈V型，用于避让其他结构，以免发生干涉。限位槽313环设于摆轴孔312的外围，用于容置摆臂32的第一端，并限制摆臂32的摆动位移。限位槽313的侧壁为弧形面，且侧壁的朝第二轮24的部分敞开，形成缺口313a。摆臂32的第一端可摆动地嵌入限位槽313中，摆臂32的第二端则从缺口313a伸出，通过第二轴34与链条11和第二轮24连接。这样，在摆臂32摆动至缺口313a两侧边缘时，会被限位槽313的侧壁阻挡，无法继续摆动， 从而实现对摆臂32摆动位移的限制，防止摆臂32过度摆动。
图9-10示出了摆臂32的结构。如图9-10所示，在该实施例中，摆臂32包括柱体部32a和延伸部32b。柱体部32a沿着摆臂32的厚度方向延伸。延伸部32b连接于柱体部32a的侧壁上，与柱体部32a分别构成摆臂32的第一端和第二端。延伸部32b的背离车体21的表面与柱体部32a的背离车体21的表面平齐，且延伸部32b的厚度小于柱体部32a的厚度，使得柱体部32a相对于延伸部32b朝车体21一侧凸出。柱体部32a上设有第二轴孔322，供第二轴34穿过。第二轴34一端与链条11连接，另一端穿过第二轴孔322后，插入第二轮24中，被轴卡41止挡，以实现链条11与第二轮24的连接。第二轮24与柱体部32a之间可以设置套设在第二轴34上的轴承42和垫圈43，以方便第二轴34转动。延伸部32b上设有连接孔321，供摆轴35穿过，以实现摆轴35与摆臂32第一端的连接。
图11示出了摆轴35的结构。如图11所示，在该实施例中，摆轴35包括轴体351和连接于轴体351一端的长圆部352。轴体351呈圆柱形，其远离长圆部352的一端设有轴槽353，用于安装轴卡41。长圆部352的横截面呈长圆形。对应地，连接孔321的远离车体21的一端呈长圆形。这样，如图6所示，当摆轴35插入连接孔321中时，轴体351从连接孔321中穿出，并插入摆轴孔312中，从摆轴孔312中穿出，而长圆部352则卡在连接孔321的远离车体21的一端，长圆部352的圆弧面与连接孔321的远离车体21一端的圆弧面接触，同时，长圆部352的平直面与连接孔321的背离车体21一端的平直面接触，使得摆轴35与摆臂32之间无法相对转动，以使摆轴35在摆轴孔312中转动时，可以带动摆臂32相对于支撑座31摆动。
在用联动结构3连接链条11和轮组22时，可以将设置在链条11上的第一轴33从支撑座31上的第一轴孔311中穿出，插入第一轮23中，并将摆轴35依次穿过摆臂32第一端的连接孔321和支撑座31上的摆轴孔312，且将设置在链条11上的第二轴34从摆臂32第二端的第二轴孔322中穿出，插入第二轮24中。这样，当小车转弯，第一轮23和第二轮24所连接的链节之间的距离发生变化时，摆臂32可以带动第二轮24相对于第一轮23摆动，相应地改变轮距。
导轨5用于在小车2转弯过程中承托轮组22，以支撑小车2。如图1所示，在该实施例中，导轨5包括第一轨道51和第二轨道52。第一轨道51位于链轮12与链条11之间，并位于链条12的中心的上方。第二轨道52位于链条11的远离链轮12的一侧，并由链轮12中心下方位置向上延伸至链轮12中心的上方。
具体地，第一轨道51包括第一弧形段511和第一平直段512。第一弧形段511由链轮12中心正上方的位置沿着链轮12的周向向下延伸。第一平直段512则连接于第一弧形段511的远离链轮12外侧的一端。链轮12外侧是指链轮12的远离另一链轮12的一侧。第一平直段512连接于第一弧形段511的远离链轮12外侧的一端，意味着，第一平直段512由第一弧形段511朝另一链轮12延伸。
另外，第二轨道52包括第二弧形段521和第二平直段522。第二弧形段521由链轮12中心正下方的位置沿着链轮12的周向向上延伸，直至延伸至链轮12中心的上方，并与第一弧形段511在链轮12周向上交错。第二平直段522连接于第二弧形段521的远离链轮12外侧的一端，换句话说，第二平直段522由第二弧形段521朝另一链轮12延伸。
基于上述设置，导轨5可以在小车2转弯过程中对小车2进行连续支撑。其中，当小车2转至靠上的位置，小车2的重量朝链轮12径向内侧压时，第一弧形段511可以托住轮组22，形成对小车2的支撑，避免小车2悬空；而当小车2转至靠下的位置，小车2的重量朝链轮12径向外侧压时，第二弧形段521可以托住轮组22，形成对小车2的支撑，避免小车2悬空。可见，在小车2沿链轮12周向转弯的整个过程中，小车2的轮组22可以一直受到导轨5的约束，从而可以使得小车2能够良好过渡，减少冲击和噪音。
而在第一弧形段511和第二弧形段521的基础上设置第一平直段512和第二平直段522，则有利于引导轮组22顺利上下第一弧形段511和第二弧形段521，以实现更加平稳的输送过程。
该实施例的链输送机构10，在联动机构3和导轨5的作用下，可以有效改善小车2的转弯平稳性。以小车2由上至下的转弯过程为例，如图1和图2所示，在小车2朝下转弯的初始阶段，小车2的轮组22压在第一弧形段511上，之后，在小车2继续朝下转弯时，轮组22改为压在第二弧形段521上，使得整个转弯过程，轮组22均受到导轨5的支撑，减小对链条11、链轮12和小车2的冲击，并且，在小车2朝下转弯的过程中，第一轮23和第二轮24所连接链节之间的距离先变小后变大，带动联动机构3的摆臂32先朝左下摆，后朝右上摆，不仅实现对轮距的调节，使得第一轮23和第二轮24之间的距离先由L2减小至L1，再由L1增大至L2，同时还使得轮组22能够始终与导轨5保持接触，被导轨5连续支撑，实现振动小、冲击小且噪音低的平稳转弯过程。
由于小车2的转弯平稳性被改善，因此，有利于减少磨损，降低噪音，提高链输送机构10及分拣系统100的运行可靠性，延长链输送机构10及分拣系统100的使用寿命。
同时，由于在联动机构3的作用下，小车2的轮距可以适应不同链节之间距离的变化，因此，还有利于链条11节距的进一步减小，这有利于进一步减轻链条11的多边形效应。
以上所述仅为本公开的示例性实施例，并不用以限制本公开，凡在本公开的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本公开的保护范围之内。

Claims (15)

  1. 一种链输送机构(10)，包括：
    链传动机构(1)，包括链条(11)和链轮(12)，所述链条(11)在所述链轮(12)的驱动下转动；
    小车(2)，设置在所述链条(11)上，并随着所述链条(11)一起转动，所述小车(2)包括车体(21)和连接于所述车体(21)相对两侧的两个轮组(22)，所述轮组(22)包括间隔布置于所述车体(21)同一侧的第一轮(23)和第二轮(24)；和
    联动机构(3)，与所述轮组(22)一一对应，并连接所述链条(11)与所述第一轮(23)和所述第二轮(24)，使所述第一轮(23)和所述第二轮(24)可相对摆动，以改变所述第一轮(23)和所述第二轮(24)之间的间距。
  2. 根据权利要求1所述的链输送机构(10)，其中，所述联动机构(3)包括支撑座(31)、摆臂(32)、第一轴(33)和第二轴(34)，所述支撑座(31)位于所述链条(11)与所述轮组(22)之间并与所述车体(21)连接，所述第一轴(33)穿过所述支撑座(31)并连接所述链条(11)与所述第一轮(23)，所述摆臂(32)的第一端可摆动地连接于所述支撑座(31)，所述第二轴(34)穿过所述摆臂(32)的与第一端相对的第二端并连接所述链条(11)与所述第二轮(24)。
  3. 根据权利要求2所述的链输送机构(10)，其中，所述联动机构(3)包括摆轴(35)，所述摆轴(35)与所述支撑座(31)转动连接，且所述摆轴(35)与所述摆臂(32)的第一端不可相对转动地连接。
  4. 根据权利要求2或3所述的链输送机构(10)，其中，所述摆臂(32)的第一端设有连接孔(321)，所述连接孔(321)的远离所述车体(21)的一端呈长圆形，且所述摆轴(35)包括长圆部(352)，所述长圆部(352)与所述连接孔(321)的远离所述车体(21)的一端配合，以实现所述摆轴(35)与所述摆臂(32)第一端之间不可相对转动地连接。
  5. 根据权利要求2-4任一所述的链输送机构(10)，其中，所述支撑座(31)上设有限位部(31e)，所述限位部(31e)限制所述摆臂(32)的摆动位移。
  6. 根据权利要求5所述的链输送机构(10)，其中，所述限位部(31e)包括限位槽(313)，所述限位槽(313)的侧壁上设有缺口(313a)，所述摆臂(32)的第一端容置于所述限位槽(313)中，所述摆臂(32)的第二端由所述缺口(313a)伸出，所 述限位槽(313)的侧壁限制所述摆臂(32)的摆动位移。
  7. 根据权利要求2-6任一所述的链输送机构(10)，其中，所述联动机构(3)还包括第三轴(38)和第四轴(39)，所述支撑座(31)通过所述第三轴(38)和第四轴(39)与所述车体(21)连接。
  8. 根据权利要求7所述的链输送机构(10)，其中，所述支撑座(31)上设有连接柱(316)、第一孔部(314)和第二孔部(315)，所述联动机构(3)还包括配合座(36)和限位件(37)，所述配合座(36)上设有通孔(361)、第三孔部(363)和第四孔部(364)，所述连接柱(316)不可转动地插入所述通孔(361)中，所述第三孔部(363)与所述第一孔部(314)配合形成封闭的第一安装孔(36a)，所述第四孔部(364)与所述第二孔部(315)配合形成封闭的第二安装孔(36b)，所述第三轴(38)和所述第四轴(39)分别插入所述第一安装孔(36a)和所述第二安装孔(36b)中，所述限位件(37)限制所述第三轴(38)和所述第四轴(39)的轴向位移。
  9. 根据权利要求8所述的链输送机构(10)，其中，
    所述连接柱(316)上设有凸部(317)，所述凸部(317)由所述连接柱(316)朝所述连接柱(316)的径向外侧延伸，所述通孔(361)上设有凹槽(362)，所述凹槽(362)由所述通孔(361)的侧壁朝所述通孔(361)的径向外侧凹陷，所述凸部(317)与所述凹槽(362)配合，以限制所述连接柱(316)与所述通孔(361)的相对转动；和/或，
    所述限位件(37)包括本体部(371)、第一卡环(372)和第二卡环(373)，所述本体部(371)卡接于所述配合座(36)上，所述第一卡环(372)和所述第二卡环(373)均设置于所述本体部(371)上，并分别卡在所述第三轴(38)和所述第四轴(39)上，以限制所述第三轴(38)和所述第四轴(39)的轴向位移。
  10. 根据权利要求1-9任一所述的链输送机构(10)，还包括导轨(5)，所述导轨(5)设置于所述链轮(12)处，并在所述小车(2)沿着所述链轮(12)周向转弯时承托所述轮组(22)。
  11. 根据权利要求10所述的链输送机构(10)，其中，所述导轨(5)包括以下至少之一：
    第一轨道(51)，位于所述链轮(12)与所述链条(11)之间，并至少部分地位于所述链轮(12)的中心的上方，所述第一轨道(51)包括第一弧形段(511)，所述第一弧形段(511)沿着所述链轮(12)的周向延伸；
    第二轨道(52)，位于所述链条(11)的远离所述链轮(12)的一侧，并至少部分地位于所述链轮(12)的中心的下方，所述第二轨道(52)包括第二弧形段(521)，所述第二弧形段(521)沿着所述链轮(12)的周向延伸。
  12. 根据权利要求11所述的链输送机构(10)，其中，所述导轨(5)包括第一轨道(51)和第二轨道(52)，所述第一弧形段(511)和所述第二弧形段(521)在所述链轮(12)的周向上交错。
  13. 根据权利要求11或12所述的链输送机构(10)，其中，所述第一轨道(51)还包括第一平直段(512)，所述第一平直段(512)连接于所述第一弧形段(511)的远离所述链轮(12)外侧的一端；和/或，所述第二轨道(52)还包括第二平直段(522)，所述第二平直段(522)连接于所述第二弧形段(521)的远离所述链轮(12)外侧的一端。
  14. 根据权利要求1-13任一所述的链输送机构(10)，其中，所述小车(2)为分拣小车。
  15. 一种分拣系统(100)，包括如权利要求1-14任一所述的链输送机构(10)。
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3662874A (en) * 1970-10-12 1972-05-16 Butz Engineering Co Parcel sorting conveyor system
CN205076405U (zh) * 2015-08-14 2016-03-09 浙江华叉搬运设备有限公司 一种交叉带分拣小车预紧装置
CN108311399A (zh) * 2018-03-30 2018-07-24 青岛科捷物流科技有限公司 一种交叉带分拣小车及交叉带分拣机
CN110406907A (zh) * 2019-09-04 2019-11-05 苏州九鲤智能科技有限公司 一种新型直线交叉带分拣机
CN210762701U (zh) * 2019-09-04 2020-06-16 青岛云梯车辆有限公司 云梯用单层送料车
CN210847215U (zh) * 2019-08-30 2020-06-26 长沙六竹机电科技有限公司 一种直线物流分拣设备分拣小车轮轨连接结构

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1035583A (en) * 1965-02-22 1966-07-13 Herbert Knaust Improvements in or relating to endless conveyors
JP4192272B2 (ja) * 2004-12-07 2008-12-10 ツバキ山久チエイン株式会社 搬送装置
US9233803B2 (en) * 2012-07-11 2016-01-12 Dematic Corp. Crossbelt sorter system and method of sorting articles
WO2015044720A1 (en) * 2013-09-30 2015-04-02 Selex Es S.P.A. A machine for sorting objects
DE102014106956A1 (de) * 2014-05-16 2015-11-19 Bleichert Automation Gmbh & Co. Kg Umlaufförderer
US9409716B2 (en) * 2014-06-13 2016-08-09 Bastian Solutions, Llc Cross belt slat sorter
CN204624521U (zh) * 2015-04-10 2015-09-09 广州明珞汽车装备有限公司 一种积放式输送机翻转机构
CN110406909A (zh) * 2019-09-03 2019-11-05 苏州九鲤智能科技有限公司 一种新型直线式分拣机

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3662874A (en) * 1970-10-12 1972-05-16 Butz Engineering Co Parcel sorting conveyor system
CN205076405U (zh) * 2015-08-14 2016-03-09 浙江华叉搬运设备有限公司 一种交叉带分拣小车预紧装置
CN108311399A (zh) * 2018-03-30 2018-07-24 青岛科捷物流科技有限公司 一种交叉带分拣小车及交叉带分拣机
CN210847215U (zh) * 2019-08-30 2020-06-26 长沙六竹机电科技有限公司 一种直线物流分拣设备分拣小车轮轨连接结构
CN110406907A (zh) * 2019-09-04 2019-11-05 苏州九鲤智能科技有限公司 一种新型直线交叉带分拣机
CN210762701U (zh) * 2019-09-04 2020-06-16 青岛云梯车辆有限公司 云梯用单层送料车

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP4129868A4 *

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US20230365336A1 (en) 2023-11-16
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