Transition device of conveying line and conveying line

By designing the transition device of the rotary arm group and roller on the conveying line, the problem of stuttering of the pallet foot is solved, and the smooth transition of the goods and six-sided packaging are achieved, reducing costs.

CN222272439UActive Publication Date: 2024-12-31SHANDONG SINOLION MACHINERY CORP LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202323590091.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2023-12-27
Publication Date
2024-12-31
Estimated Expiration
2033-12-27

AI Technical Summary

Technical Problem

During the vertical winding and packaging of goods, the pallet stack feet are prone to get stuck between the conveyor lines, resulting in unstable transportation, and increasing the width of the stack feet to avoid lag will increase the cost of pallet modification and transition device.

Method used

Design a conveyor line transition device including a rotating arm group, a roller and a telescopic drive assembly. Through the rotation of the roller and the movement of the telescopic drive assembly, the stack foot is lifted to ensure that the pallet passes smoothly between the conveyor lines and when necessary When folding, it will not affect the packaging process.

Benefits of technology

It realizes a smooth transition between the pallet and the cargo between the conveying line, ensures that the six-sided winding packaging area of ​​the cargo meets the standards, and reduces the cost of the transition device and the pallet modification needs.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN222272439U_ABST
    Figure CN222272439U_ABST
Patent Text Reader

Abstract

The utility model relates to the technical field of adjustable conveying devices, in particular to a transition device of a conveying line and the conveying line. The transition device of the conveying line comprises a rotating arm set, a roller and a telescopic driving assembly, the rotating arm set comprises a first connecting arm and a second connecting arm, and the first connecting arm and the second connecting arm are perpendicular to each other and intersect at a connecting part; the roller is rotationally connected with the second connecting arm; the telescopic driving assembly comprises a telescopic end and a fixed end, the fixed end is hinged to the fixed base, and the telescopic end is hinged to the connecting part. The utility model further provides a conveying line comprising the transition device, the conveying line comprises a first frame body and a second frame body which are adjacent in sequence in the conveying direction, and the first connecting arm is rotationally connected to the lower portion of the first frame body or the lower portion of the second frame body. The vertical winding and packaging device can guarantee stable conveying transition and achieve vertical winding and packaging of goods.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The utility model relates to the technical field of adjustable transport devices, in particular to a transition device of a conveyor line and a conveyor line. Background Art

[0002] When the goods need to be wrapped on six sides, a combination of horizontal and vertical wrapping is required. The size of the pallet foot needs to be considered. According to the size of the pallet foot, it is necessary to consider whether the transition problem during the transportation process needs to be paid attention to. The way to wrap the goods vertically on the conveyor line is that the pallet carries the goods on the conveyor line, and two conveyor lines are set up with space left in between. The pallet loaded with goods moves between the two conveyor lines. As the pallet gradually moves, the packaging machine vertically packages the pallet and the goods through the space between the two conveyor lines.

[0003] In the longitudinal packaging process, it is necessary to consider the size of the pallet's feet and the size of the space between the two conveyor lines. When the feet pass through the space between the two conveyor lines, the problem of stable transportation of the pallet and the goods needs to be considered. Usually, in order to ensure the stability of transportation and the realization of vertical wrapping, the space between the two conveyor lines must at least keep the width of the packaging film. If the feet are smaller than the width of the film or the width is not much different from the width of the film, the feet may be stuck between the two conveyor lines when passing through the two conveyor lines; if the reserved space between the two conveyor lines is large, when the pallet drives the goods through the two conveyor lines, the packaging machine will wrap the goods vertically after the pallet with the feet passes between the two conveyor lines. Due to the large space between the two conveyor lines, when the feet reach the latter conveyor line, there is a part of the front part of the pallet and the goods that exceeds the working space of the vertical wrapping packaging, resulting in the pallet and the goods in the front part of the conveying direction not being wrapped vertically, and the vertical wrapping packaging area of ​​the pallet and the goods does not meet the standard.

[0004] The length of the space reserved between the two conveyor lines is at least the width of the wrapping film. If the width of the pallet's feet is less than the distance between the two conveyor lines or the difference between the two is not much, the pallet's feet may be stuck between the two conveyor lines. If the width of the pallet's feet is increased so that the pallet can pass smoothly through the two conveyor lines without a transition device, the cost of modifying the pallets is high because a large number of pallets are needed in the workshop to load or transport goods. It is cheaper to set up a transition device between the two conveyor lines. Utility Model Content

[0005] In view of the situation in the prior art that when goods are vertically wrapped and packaged, the legs of the stack may be stuck between two conveyor lines, the utility model provides a transition device of a conveyor line and a conveyor line, which can ensure a smooth conveying transition and realize vertical wrapping and packaging of goods.

[0006] The utility model provides a transition device for a conveyor line, comprising a rotating arm group, a roller and a telescopic drive assembly, the rotating arm group comprising a first connecting arm and a second connecting arm, the first connecting arm and the second connecting arm are perpendicular to each other and intersect at a connecting portion; the roller is rotatably connected to the second connecting arm; the telescopic drive assembly comprises a telescopic end and a fixed end, the fixed end is hinged to a fixed seat, and the telescopic end is hingedly connected to the connecting portion.

[0007] Furthermore, the number of the rotating arm groups is one group.

[0008] Furthermore, there are two sets of rotating arm groups, two first connecting arms are respectively arranged at two ends of the frame, and two second connecting arms are respectively arranged at two ends of the roller. By setting two sets of rotating arm groups, in the process of rotating the roller, the two sets of rotating arm groups work at the same time, the rotating process is more stable, the overall stability of the transition device is higher, and it is not easy to be damaged.

[0009] Furthermore, the connection portion is provided with a connection end, and the connection end is hingedly connected to the telescopic end. The connection portion is hingedly connected to the telescopic end by providing the connection end, and when the telescopic end and the connection end are hingedly rotated, the first connection arm and the second connection arm have less influence on the rotation of the telescopic end, and the position range that can be set for the telescopic drive assembly is larger, which makes it more convenient to arrange and install the transition device according to production needs.

[0010] Furthermore, the telescopic end is rotatably connected to a connecting shaft, and the connecting shaft is fixedly connected to the connecting part.

[0011] Furthermore, the telescopic end is sleeved outside the connecting shaft and separate fixing rings fixed to the connecting shaft are respectively provided on both sides of the telescopic end.

[0012] Furthermore, a single-ear fixing seat is provided at one end where the fixing end is connected to the fixing seat, and a double-ear connecting seat matching with the single-ear connecting seat is fixed to the fixing seat, and the double-ear connecting seat and the single-ear connecting seat are connected by bolts.

[0013] The utility model also provides a conveyor line, including a transition device, and also including a first frame and a second frame that are adjacent in sequence along the conveying direction, and a first connecting arm is rotatably connected to the lower part of the first frame or the second frame. The transition device can be installed on the first frame of the front conveyor line, and can also be installed on the second frame of the rear conveyor line, and the roller can be rotated to a position flush with the conveying roller on the conveyor line through the rotating arm group.

[0014] Furthermore, the first connecting arm is fixedly connected to a rotating shaft, both ends of the rotating shaft are connected to bearings, the bearings are fixed to a bearing seat, and the bearing seat is fixedly installed at the lower part of the first frame. The first connecting arm and the first frame are rotatably connected by the bearing, and the bearing has higher rotation flexibility and higher rotation sensitivity.

[0015] Furthermore, a conveying roller is laid on the first frame, and when the surface of the roller is flush with the surface of the conveying roller, the axial direction of the first connecting arm is parallel to the conveying direction of the conveying roller. In this embodiment, the length of the first connecting arm and the second connecting arm is the smallest, the trajectory range of the roller rotation is the smallest, and the influence of the first frame and the second frame is small, which can ensure that the vertical winding working space left between the first frame and the second frame is small, thereby ensuring that the vertical winding area of ​​the pallet and the goods meets the standard.

[0016] The beneficial effects of the utility model are:

[0017] The utility model can reserve space for longitudinal packaging between two conveyor lines. When a pallet loaded with goods transitions between the two conveyor lines, the rollers can move between the two conveyor lines, so that when the pallet's feet pass through the two conveyor lines, the rollers hold up the pallet's feet, so that the pallet can be smoothly transported between the two conveyor lines. The retraction of the rollers does not affect the vertical packaging of the pallet and the goods, thereby realizing the six-sided wrapping packaging of the goods. A space equal to the width of the wrapping film is reserved between the two conveyor lines, and the rollers of the transition device can move between the two conveyor lines to ensure that the pallet's feet pass through the two conveyor lines smoothly, and to ensure that the area of ​​the vertical wrapping packaging of the pallet and the goods meets the standards. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 It is a structural schematic diagram of an embodiment of the utility model.

[0020] Figure 2 It is a schematic diagram of the structure of the utility model where the roller rotates between the first frame and the second frame.

[0021] Figure 3 It is a schematic diagram of the vertical structure of the utility model.

[0022] Figure 4 This is a schematic diagram of the structure of the utility model working with a packaging machine.

[0023] Figure 5 It is a structural schematic diagram of an embodiment of the utility model which only includes one rotating arm assembly.

[0024] Figure 6 The utility model is a schematic structural diagram of an embodiment including three rotating arm groups.

[0025] Explanation of main figure marks 1. rotating arm group, 11. first connecting arm, 12. second connecting arm, 13. connecting part, 14. connecting end, 21. rotating shaft, 22. bearing, 23. bearing seat, 3. roller, 41. fixed end, 42. telescopic end, 43. fixed seat, 44. telescopic head, 45. separation fixing ring, 46. connecting shaft, 51. first frame, 52. second frame, 511. conveying roller, 61. pallet, 62. stacking foot, 63. packaging machine. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0027] like Figure 1-Figure 6 As shown, the utility model provides a transition device for a conveyor line, including a swivel arm group 1, a roller 3 and a drive assembly, the swivel arm group 1 includes a first connecting arm 11 and a second connecting arm 12, the first connecting arm 11 and the second connecting arm 23 are perpendicular to each other and intersect at a connecting portion 13, the first connecting arm 11 is fixedly connected to a rotating shaft 21, the rotating shaft 21 can be rotatably connected to the lower part of the frame of the conveyor line, the first connecting arm 11 and the second connecting arm 12 are arranged perpendicular to each other; the roller 3 is rotatably connected to the second connecting arm 12; the telescopic drive assembly includes a telescopic end 42 and a fixed end 41, the fixed end 41 is hinged to a fixed seat 43, and the telescopic end 42 is hingedly connected to the connecting portion 13.

[0028] In the embodiment of the utility model, the telescopic end 42 reciprocates linearly along the fixed end 41, the telescopic end 42 drives the connection part 13 to reciprocate, the connection part 13 drives the second connection arm 12 to reciprocate, and the second connection arm 12 drives the roller 3 to move upward or downward. There is a space between the first frame 51 and the second frame 52 for the packaging machine 63 to pack the pallet 61 and the goods vertically, the roller 3 moves upward until the roller 3 is flush with the other conveying rollers 511 of the conveyor line, the stacking foot 62 of the pallet 61 moves from the conveying roller 511 of one conveyor line through the lifted roller 3 to the conveying roller 511 of another conveyor line, the fixed end 41 then drives the roller 3 to move downward and out of the packaging space, the packaging machine 63 vertically packs the pallet 61 and the goods, and waits for the stacking foot 62 behind the pallet 61 to move here, and then the working process of the transition device is circulated again.

[0029] In the embodiment of the utility model, the first connecting arm 11 and the second connecting arm 12 are arranged perpendicular to each other, which means that the angle between the first connecting arm 11 and the second connecting arm 12 is 90° or slightly greater than or slightly less than 90°. The more the angle between the first connecting arm 11 and the second connecting arm 12 deviates from 90°, the greater the horizontal distance of the trajectory of the second connecting arm 12 when it rotates on the conveyor line platform, which affects the length of the space between the two adjacent conveyor lines. Within the range of 90° plus or minus 5°, the impact on the space between the two conveyor lines is small, which falls within the protection scope of the utility model.

[0030] In one embodiment, the connecting portion 13 is provided with a connecting end 14 extending outward, and the connecting end 14 is hingedly connected to the telescopic end 42. The connecting portion 13 is hingedly connected to the telescopic end 42 by providing the connecting end 14. When the telescopic end 42 is hingedly rotated with the connecting end 14, the first connecting arm 11 and the second connecting arm 12 have less influence on the rotation of the telescopic end 42, and the position range of the telescopic drive assembly can be larger, which makes it more convenient to arrange and install the transition device according to production needs. The telescopic end 42 can be hinged at the position where the first connecting arm 11 and the second connecting arm 12 intersect vertically, or can be hinged at the position of the connecting end 14 extending outward, and the user can flexibly adjust the position of the telescopic drive assembly according to the hinged position.

[0031] In one embodiment of the utility model, the fixed end 41 is a cylinder, which drives the telescopic end 42 to reciprocate. In one embodiment of the utility model, the fixed end 41 is a hydraulic cylinder, which drives the telescopic end 42 to reciprocate. In one embodiment of the utility model, the fixed end 41 is an electric cylinder, which drives the telescopic end 42 to reciprocate. Using a cylinder, a hydraulic cylinder or an electric cylinder to drive the telescopic end 42 to reciprocate in a specified stroke is a technical means that can be implemented by those skilled in the art. Those skilled in the art can select the appropriate type and model of the fixed end 41 to achieve the technical effect of the telescopic end 42 to reciprocate in a specified stroke. Therefore, the working principle of the fixed end 41 will not be repeated in the embodiments of the utility model.

[0032] like Figure 5As shown, in one embodiment of the utility model, the number of the rotating arm group 1 is one, the first connecting arm 11 is fixedly connected to the middle of the rotating shaft 21, and the second connecting arm 12 is connected to the middle of the roller 3. In this embodiment, the two ends of a rotating shaft 21 are rotatably connected with bearings 22, and the bearing 22 is connected to a bearing seat 23. The bearing seat 23 is bolted to the lower part of the frame of the conveyor line, and the first connecting arm 11 is fixedly connected to the middle of the rotating shaft 21. When the rotating shaft 21 rotates, the first connecting arm 11 is driven to rotate. In this embodiment, the roller 3 includes a rotating drum and a roller shaft. Two rotating drums of the same size are rotatably connected to the roller shaft. The roller shaft is fixedly connected to the second connecting arm 12, such as welding or interference connection. The position where the roller shaft is fixedly connected to the second connecting arm 12 is located between the two rollers 3. After the second connecting arm 12 props up the roller 3, the two rollers 3 rotate around the roller shaft. In this embodiment, the connecting part 13 is fixedly connected to a short connecting shaft 46, one end of the connecting shaft 46 is pin-connected and fixed to the connecting part 13, the connecting shaft 46 is sleeved in the telescopic end 42, the telescopic end 42 can rotate around the connecting shaft 46, and the other end of the connecting shaft 46 is threadedly connected to a limiting bolt to limit the telescopic end 42 between the second connecting arm 12 and the limiting bolt.

[0033] like Figure 3 As shown, in a preferred embodiment of the utility model, the number of the rotating arm groups 1 is two, the two first connecting arms 11 are respectively arranged at the two ends of the rotating shaft 21, the two second connecting arms 12 are respectively arranged at the two ends of the roller 3, the telescopic end 42 is rotatably connected with the connecting shaft 46, and the two connecting parts 13 are respectively fixed at the two ends of the connecting shaft 46. In this embodiment, the two rotating arm groups 1 are driven by two fixed ends 41, and the fixed ends 41 are selected from cylinders, hydraulic cylinders or electric cylinders, and are all driven and controlled by the same controller to ensure the synchronous movement of the two telescopic ends 42. In this embodiment, the two rotating arm groups 1 drive the roller 3 to move up and down, with higher stability and higher structural strength. In this embodiment, the two first connecting arms 11 are fixedly connected to the rotating shaft 21, and the fixed connection methods include but are not limited to welding, bolt connection, interference connection, etc. In this embodiment, the two second connecting arms 12 are respectively arranged at the two ends of the roller 3 in such a manner that the roller 3 is rotatably connected with a roller shaft, and the roller shaft is fixedly connected to the two second connecting arms 12, such as by welding, interference connection, bolt connection, etc., or the roller 3 is interference connected with the roller shaft, and the roller shaft is rotatably connected to the second connecting arms. In this embodiment, the two connecting parts 13 are respectively fixed to the two ends of the connecting shaft 46 in such a manner as by welding, interference connection, bolt connection, etc.

[0034] like Figure 6As shown, in one embodiment of the utility model, the number of the rotating arm groups 1 is three, wherein two rotating arm groups 1 are arranged at both ends of the roller 3, and one rotating arm group 1 is arranged at the middle position of the roller 3, and the three rotating arm groups 1 have higher stability when pushing the roller 3 to rotate. In this embodiment, the two rotating arm groups 1 are arranged at both ends of the roller 3 in such a manner that the two second connecting arms 12 are respectively arranged at both ends of the roller 3 in such a manner that the roller 3 is rotatably connected with a roller shaft, and the roller shaft is fixedly connected to the two second connecting arms 12, such as by welding, interference connection, bolt connection, etc., or the roller 3 is interference connected to the roller shaft, and the roller shaft is rotatably connected to the second connecting arms. A rotating arm group 1 is arranged at the middle position of the roller 3 in the following manner: in the present embodiment, the roller 3 comprises a rotating drum and a roller shaft; two rotating drums of the same size are rotatably connected to the roller shaft; the roller shaft is fixedly connected to the second connecting arm 12, for example, by welding or interference connection; the position where the roller shaft is fixedly connected to the second connecting arm 12 is located between the two rollers 3; after the second connecting arm 12 props up the roller 3, the two rollers 3 rotate around the roller shaft.

[0035] In an embodiment of the utility model, the telescopic end 42 is hingedly connected to the connecting portion 13. In one embodiment, the telescopic end 42 is rotatably connected to a connecting shaft 46, and the connecting shaft 46 and the connecting portion 13 are fixedly connected. The telescopic end 42 is rotatably connected to the connecting shaft 46 in such a manner that an end of the telescopic end 42 facing away from the fixed end 41 is fixedly connected to a telescopic head 44, and the telescopic head 44 is sleeved on the outside of the connecting shaft 46. Separate fixing rings 45 fixed to the connecting shaft 46 are respectively provided on both sides of the telescopic head 44, and the separate fixing rings 45 on both sides of the telescopic head 44 limit the movement of the telescopic head 44 along the axial direction of the connecting shaft 46.

[0036] In the embodiment of the utility model, the fixed end 41 is hinged to the fixed seat 43. In one embodiment, one end of the fixed end 41 connected to the fixed seat 43 is provided with a single-ear fixed seat 43, and the fixed seat 43 is fixed with a double-ear connecting seat matched with the single-ear connecting seat, and the double-ear connecting seat and the single-ear connecting seat are connected by bolts.

[0037] The embodiment of the utility model also provides a conveyor line, including a transition device, the conveyor line also includes a first frame 51 and a second frame 52 which are adjacent in sequence along the conveying direction, a space is left between the first frame 51 and the second frame 52 for the packaging machine 63 to longitudinally wrap the packaging pallet 61 and the goods, and conveying rollers 511 are arranged on the first frame 51 and the second frame 52. In one embodiment, the rotating shaft 21 is rotatably connected to the lower part of the first frame 51. In another embodiment, the rotating shaft 21 is rotatably connected to the lower part of the second frame 52. Regardless of whether the transition device is installed at the lower part of the first frame 51 or the lower part of the second frame 52, when the driving assembly moves, the roller 3 is driven to between the first frame 51 and the second frame 52 to complete the work. The transition device is installed at the lower part of the first frame 51 or the lower part of the second frame 52, and the two installation positions and installation states are symmetrically arranged.

[0038] In one embodiment of the utility model, the rotating shaft 21 is rotatably connected to the lower part of the first frame 51, and the bearing seat 23 with the bearing 22 is bolted and fixedly installed at the lower part of the first frame 51, and the rotating shaft 21 is interference connected in the hole of the bearing 22. In an embodiment in which two rotating arms are provided in the transition device, the first connecting arm 11 can be fixed to the end of the rotating shaft 21 located outside the two bearings 22, and can also be fixed to the part of the rotating shaft 21 located inside the two bearings 22. In another embodiment of the utility model, the rotating shaft 21 is welded to the lower part of the first frame 51, and the first connecting arm 11 is rotatably connected to the rotating shaft 21. The rotational connection method includes the first connecting arm 11 being sleeved on the rotating shaft 21, and limiting members are provided on both sides of the first connecting arm 11, such as a separate fixing ring.

[0039] The smaller the space between the first frame 51 and the second frame 52, the higher the packing degree of the pallet 61 and the goods. During the process of the roller 3 rotating between the first frame 51 and the second frame 52, it is necessary to control the roller 3 so that it will not be affected by the first frame 51 and the second frame 52 during rotation. In a preferred embodiment of the utility model, the distance between the upper surface of the first frame 51 and the axial center of the bearing 22 is equal to the length of the second connecting arm 12, and the distance between the end of the first frame 51 facing the second frame 52 and the axial center of the bearing 22 is equal to the length of the first connecting arm 11. In this embodiment, the first connecting arm 11 is perpendicular to the second connecting arm 12. When the roller 3 is pushed to be flush with the conveying roller 511 on the first frame 51, the first connecting arm 11 is parallel to the length direction of the first frame 51. At this time, the distance between the axial center of the first frame 51 and the bearing 22, that is, the thickness of the frame is equal to the length of the second connecting arm 12, and the distance between the bearing 22 and one end of the first frame 51 toward the second frame 52 is the length of the first connecting arm 11. In this embodiment, only one roller 3 is needed to transition the pallet 61 and the goods. When the pallet 61 and the goods transition between the two production lines through the roller 3, the pressure on the roller 3 is small, the strength requirement for the transition device is low, and the transition device has a long service life and high stability.

[0040] Although the present invention is described in detail by referring to the accompanying drawings and in combination with the preferred embodiments, the present invention is not limited thereto. Without departing from the spirit and essence of the present invention, a person skilled in the art may make various equivalent modifications or substitutions to the embodiments of the present invention, and these modifications or substitutions shall be within the scope of the present invention. Any person skilled in the art who is familiar with the present technical field may easily think of changes or substitutions within the technical scope disclosed in the present invention, and these shall be within the scope of protection of the present invention.

Claims

1. A transition device for a conveyor line, characterized in that: include: A rotating arm assembly, comprising a first connecting arm and a second connecting arm, wherein the first connecting arm and the second connecting arm are perpendicular to each other and intersect at a connecting portion; A roller, which is rotatably connected to the second connecting arm; The telescopic driving assembly comprises a telescopic end and a fixed end, wherein the fixed end is hinged to a fixed seat, and the telescopic end is hinged to a connecting part.

2. A transition device for a conveyor line as claimed in claim 1, characterized in that: The number of swivel arm groups is one group.

3. A transition device for a conveyor line as claimed in claim 1, characterized in that: There are two rotating arm groups, two first connecting arms are respectively arranged at two ends of the frame body, and two second connecting arms are respectively arranged at two ends of the roller.

4. A transition device for a conveyor line as claimed in claim 1, characterized in that: The connecting portion is provided with a connecting end, and the connecting end is hingedly connected to the telescopic end.

5. A transition device for a conveyor line as claimed in claim 3, characterized in that: The telescopic end is rotatably connected with a connecting shaft, and the connecting shaft is fixedly connected to the connecting part.

6. A transition device for a conveyor line as claimed in claim 5, characterized in that: The telescopic end is sleeved outside the connecting shaft and separation fixing rings fixed to the connecting shaft are respectively arranged on both sides of the telescopic end.

7. A transition device for a conveyor line as claimed in claim 6, characterized in that: One end of the fixed end connected with the fixed seat is provided with a single-ear fixed seat, and the fixed seat is fixed with a double-ear connecting seat matched with the single-ear connecting seat, and the double-ear connecting seat and the single-ear connecting seat are connected by bolts.

8. A conveyor line, characterized in that: It comprises the transition device as described in any one of claims 1 to 7, and also comprises a first frame and a second frame adjacent to each other in sequence along the conveying direction, and the first connecting arm is rotatably connected to the lower part of the first frame or the second frame.

9. A conveyor line as claimed in claim 8, characterized in that: The first connecting arm is fixedly connected with a rotating shaft, both ends of the rotating shaft are connected with bearings, the bearings are fixed to the bearing seats, and the bearing seats are fixedly installed at the lower part of the first frame.

10. A conveyor line as claimed in claim 9, characterized in that: A conveying roller is laid on the first frame. When the surface of the roller is flush with the surface of the conveying roller, the axial direction of the first connecting arm is parallel to the conveying direction of the conveying roller.