Conveying workbench

Abstract

The utility model relates to the technical field of assembly lines, in particular to a conveying workbench which comprises a roller conveying device used for conveying materials. The lifting mechanisms lift the roller conveying device according to the height of the material at the input end and are arranged on the two sides of the roller conveying device, and the lower ends of the lifting mechanisms are grounded; the height detection mechanism is used for detecting the height of the material at the input end and is arranged on the lifting mechanism; and the control system is used for receiving and outputting signals and is in communication connection with the roller conveying device, the lifting mechanism and the height detection mechanism. The control system receives the height information of the input ends, and the height of the control system can be adjusted according to the input ends with different heights, so that material connection conveying is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of assembly lines, and more specifically, to a transmission workbench. Background Art

[0002] Material transfer tables were originally designed to address the inefficiency and high costs of manual handling in mechanized production. With the continuous advancement of industrial automation, production efficiency has greatly improved, but this has also brought about the need for more efficient material handling systems. The emergence of transfer tables has streamlined the flow of materials in the production process, reducing delays and losses caused by manual handling, thereby improving overall production efficiency. With the development of electrical technology and advancements in industrial automation, material transfer tables have begun to integrate more automated and intelligent functions. In the construction of modern logistics systems, material transfer tables are more than just a simple transfer tool; they have become a key link connecting production and logistics, improving the quality and efficiency of logistics services.

[0003] During the mechanized production process, the height of the incoming materials at the input end is not constant, and the transfer workbench in the prior art cannot connect and transport materials at input ends of different heights. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiency of the prior art that it is unable to carry out material connection and transportation for input ends of different heights, and to provide a transmission workbench that can adjust its own height for input ends of different heights to achieve material connection and transportation.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] A transfer workbench is provided, comprising:

[0007] Roller conveyor device for conveying materials;

[0008] Several lifting mechanisms are used to lift and lower the roller conveyor according to the height of the material at the input end. The lifting mechanisms are sequentially installed on both sides of the roller conveyor along the material conveying direction, and their lower ends are grounded;

[0009] A height detection mechanism, used to detect the height of the material at the input end, which is installed on the lifting mechanism;

[0010] The control system is used for receiving and outputting signals and is communicatively connected with the roller conveying device, the lifting mechanism and the height detection mechanism.

[0011] The lifting mechanism of the utility model is installed at both ends of the roller conveyor device, the height detection mechanism measures the height of the input end, the control system receives the input end height information and controls the lifting and lowering of the lifting mechanism, thereby realizing the height adjustment of the roller conveyor device, so that the material can be smoothly input and transported by the roller conveyor device.

[0012] Furthermore, the lifting mechanism includes a lifting assembly, a support member, and a drive assembly. The drive assembly is connected to the lifting assembly. One end of the support member is grounded and the other end is slidably connected to the lifting assembly. A side end of the lifting assembly is connected to the roller conveyor device. The drive assembly is in communication with the control system. The lifting assembly is slidably connected to the support frame. The drive assembly drives the lifting assembly to move up and down. The up and down movement of the lifting assembly in turn drives the roller conveyor device to move up and down to achieve lifting.

[0013] Furthermore, the lifting assembly includes a lifting rod, a nut, and a stop sleeve. The drive assembly is connected to the nut and drives it to rotate. The lifting rod is slidably mounted inside the support member, and its portion protrudes from the support member. The stop sleeve is mounted inside the support member and is mounted on the lifting rod. The nut is mounted on the lifting rod to form a screw-nut transmission pair. The side of the lifting rod is connected to the roller conveyor device. The drive assembly is connected to the lifting rod via the nut, and the drive assembly drives the nut to rotate. The stop sleeve mounted inside the support member is mounted on the lifting rod, which causes the lifting rod to move up and down. The up and down movement of the lifting rod drives the roller conveyor device up and down to achieve lifting.

[0014] Furthermore, the lifting mechanism further includes a casing, the driving assembly includes a first motor, a worm gear and a worm, the casing is provided with a first opening at both the upper and lower ends, and a second opening at the side end, the casing is mounted on the top of the support member, the worm gear is mounted inside the casing, and is connected to the lifting rod via the nut, both ends of the lifting rod pass through the first opening, the worm gear meshes with the worm gear, and its end passes through the second opening to connect with the first motor, and the first motor is communicatively connected to the control system. The setting of the casing can prevent the internal components of the casing from being damaged, while improving the mechanical strength of the lifting mechanism, the first motor is driven by the meshing of the worm gear and the worm gear, and the meshing transmission of the worm gear and the worm gear can be self-locking, and can remain stationary under load, and the lifting rod will not slide down.

[0015] Furthermore, the lifting assembly further includes a first connecting assembly, which is connected to the lifting rod and has a side portion connected to the roller conveyor. The lifting rod is connected to the first connecting assembly, thereby driving the first connecting assembly to move up and down, and the up and down movement of the first connecting assembly in turn drives the roller conveyor to move up and down to achieve lifting.

[0016] Furthermore, a pressure oil ring is provided on the side of the casing and communicates with the interior of the casing. The pressure oil ring serves as a connecting component between the grease gun and the mechanical equipment, which simplifies the lubrication process and improves work efficiency.

[0017] Furthermore, the roller conveyor device includes a second motor, two second connecting assemblies, two drive roller groups, and a mounting frame. The second motor and the drive roller groups are both mounted on the mounting frame. The bottom end of the mounting frame is connected to the lifting assembly. The second motor is located between the two second connecting assemblies. One end of the second connecting assembly is connected to the second motor, and the other end is connected to the drive roller group. The second motor is in communication with the control system. The second motor drives the drive roller groups at both ends through the second connecting assembly. Both of the drive roller groups are mounted on the mounting frame. The lifting assembly drives the mounting frame to move up and down.

[0018] Furthermore, the transmission roller assembly includes a driving roller, a plurality of driven rollers, a main transmission belt, and a plurality of auxiliary transmission belts. The driving roller and the driven rollers are both rotatably connected to the mounting frame. The driving roller is connected to the second connecting assembly. The driving roller and the driven rollers are connected by the main transmission belt, and adjacent two driven rollers are connected by the auxiliary transmission belt. A second motor drives the driving roller to rotate via the second connecting assembly. The driving roller drives the driven rollers to rotate via the main transmission belt. The driven rollers are connected and driven by the auxiliary transmission belt, thereby achieving material transportation.

[0019] Furthermore, the device further includes a length detection mechanism for detecting whether all materials have been conveyed to the roller conveyor. The length detection mechanism is installed on the roller conveyor and is in communication with the control system. The length detection mechanism can detect whether all materials have been conveyed to the roller conveyor. Once all materials have been conveyed to the roller conveyor, a signal is transmitted to the control system. The control system controls the lifting mechanism to confirm whether the heights of all lifting mechanisms are adjusted to the same level. Once the adjustment is complete, the information is fed back to the roller conveyor for conveyance.

[0020] Furthermore, the lifting mechanisms are grouped together in pairs, with the lifting mechanisms within the group positioned facing each other on either side of the roller conveyor. Installing the lifting mechanisms on both sides of the roller conveyor provides improved stability and balance, making it particularly suitable for carrying heavy objects. This can disperse the load and reduce safety risks caused by unilateral overloading.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] 1. The lifting mechanism of the utility model is installed at both ends of the roller conveyor device. The height detection mechanism measures the height of the input end. The control system receives the input end height information and controls the lifting mechanism to adjust the height of the roller conveyor device, so that the material can be smoothly input and transported by the roller conveyor device.

[0023] 2. The length detection mechanism of the utility model can detect whether all materials are conveyed to the roller conveyor device. After all materials are conveyed to the roller conveyor device, a signal is transmitted to the control system. The control system controls the lifting mechanism to confirm whether the heights of all lifting mechanisms are adjusted to be consistent. After the adjustment is completed, the information is fed back to the roller conveyor device for conveying;

[0024] 3. The first motor of the present invention is driven by the meshing of the worm wheel and the worm. The meshing transmission of the worm wheel and the worm can achieve self-locking. Under load conditions, the motor can remain stationary and the lifting rod will not slide down. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic structural diagram of a transmission workbench from a first perspective of the present invention;

[0026] Figure 2 This is a schematic structural diagram of a transmission workbench from a second perspective of the present invention;

[0027] Figure 3 This is a structural diagram of the lifting mechanism of the utility model;

[0028] Figure 4 The structural diagram of the lifting mechanism of the present invention is shown without the first motor and the first connecting assembly;

[0029] Figure 5 This is a structural diagram of the lifting mechanism of the utility model without the casing and other components;

[0030] Figure 6 This is a schematic structural diagram of the transmission roller assembly of the present utility model;

[0031] Figure 7 for Figure 6 Enlarged view of point A.

[0032] In the accompanying drawings: 100, roller conveyor; 110, second motor; 120, second connecting assembly; 130, transmission roller group; 131, active roller; 132, driven roller; 133, transmission assembly; 140, mounting frame; 210, lifting assembly; 211, lifting rod; 212, first connecting assembly; 213, lifting member; 214, flange; 220, support member; 231, first motor; 232, worm gear; 233, worm; 240, casing. DETAILED DESCRIPTION

[0033] The present invention is further described below in conjunction with specific embodiments. The accompanying drawings are for illustrative purposes only and are schematic, not actual, representations. They should not be construed as limiting this patent. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted from the drawings.

[0034] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and so on indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0035] Example 1

[0036] Figures 1 to 7 The embodiment shown is the first embodiment of a conveying workbench, comprising a roller conveyor 100 for conveying materials; a plurality of lifting mechanisms for raising and lowering the roller conveyor 100 according to the material height at the input end, which are sequentially installed on both sides of the roller conveyor 100 along the material conveying direction, and their lower ends are grounded; a height detection mechanism for detecting the material height at the input end, which is installed in the lifting mechanism; and a control system for receiving and outputting signals, which is communicatively connected to the roller conveyor 100, the lifting mechanism, and the height detection mechanism. The lifting mechanisms of the present invention are installed at both ends of the roller conveyor 100. The height detection mechanism measures the height of the input end. The control system receives the input height information and controls the lifting and lowering of the lifting mechanism, thereby adjusting the height of the roller conveyor 100, so that materials can be smoothly input and conveyed by the roller conveyor 100. The lifting mechanism of the present invention can be selected from devices such as multi-stroke cylinders and linear motors.

[0037] The lifting mechanism of the present invention includes a lifting assembly 210, a support member 220, and a drive assembly. The drive assembly is connected to the lifting assembly 210. One end of the support member 220 is grounded, and the other end is slidably connected to the lifting assembly 210. The side end of the lifting assembly 210 is connected to the roller conveyor 100, and the drive assembly is in communication with the control system. The lifting assembly 210 is slidably connected to the support frame. The drive assembly drives the lifting assembly 210 to move up and down. The up and down movement of the lifting assembly 210 in turn drives the roller conveyor 100 to move up and down to achieve lifting. The drive assembly can adopt a multi-stroke cylinder, a hydraulic cylinder, a linear motor, etc., but is not limited to these. It can be selected according to actual needs.

[0038] The lifting assembly 210 of the present invention includes a lifting rod 211, a nut, and a rotation-stopping sleeve. The driving assembly is connected to the nut and drives it to rotate. The lifting rod 211 is slidably mounted inside the support member 220, and its portion protrudes from the support member 220. The rotation-stopping sleeve is mounted inside the support member 220 and is sleeved on the lifting rod 211. The nut is sleeved on the lifting rod 211 to form a screw-nut transmission pair. The side of the lifting rod 211 is connected to the roller conveyor device 100. The driving assembly is connected to the lifting rod 211 via the nut. The driving assembly drives the nut to rotate. The rotation-stopping sleeve mounted inside the support member 220 is sleeved on the lifting rod 211, causing the lifting rod 211 to move up and down. The up and down movement of the lifting rod 211 drives the roller conveyor device 100 up and down to achieve lifting.

[0039] The lifting mechanism of the present invention also includes a housing 240, a drive assembly including a first motor 231, a worm gear 232, and a worm 233. The housing 240 has a first opening at both ends and a second opening at the side. The housing 240 is mounted on the top of the support member 220. The worm gear 232 is mounted inside the housing 240 and is connected to the lifting rod 211 via a nut. The ends of the lifting rod 211 pass through the first openings, the worm gear 233 engages with the worm gear 232, and its end passes through the second opening to connect to the first motor 231. The first motor 231 is connected to a control system. The arrangement of the housing 240 can prevent damage to the internal components of the housing 240 and improve the mechanical strength of the lifting mechanism. The first motor 231 is driven by the meshing of the worm gear 232 and the worm 233. The meshing transmission of the worm gear 232 and the worm 233 can achieve self-locking, and can remain stationary under load, so that the lifting rod 211 will not slide down.

[0040] The lifting assembly 210 of the present invention further includes a first connecting assembly 212, which is connected to the lifting rod 211 and has its side connected to the roller conveyor 100. The driving assembly drives the lifting rod 211 to move up and down. The lifting rod 211 is connected to the first connecting assembly 212, which in turn drives the first connecting assembly 212 to move up and down. The up and down movement of the first connecting assembly 212 drives the roller conveyor 100 to move up and down to achieve lifting. The lifting assembly 210 of the present invention also includes a flange 214 and a lifting piece 213. The flange 214 is installed at the top of the lifting rod 211, one end of which is connected to the lifting rod 211, and the other end is connected to the first connecting assembly 212, that is, the lifting rod 211 is connected to the first connecting assembly 212 through the flange 214. The flange 214 can ensure the reliability and stability of the connection between the lifting rod 211 and the first connecting assembly 212. At the same time, it is easy to disassemble and assemble, and is convenient for installation and maintenance. Component replacement and system maintenance can be quickly performed. The lower end of the first connecting assembly 212 of the present invention is provided with a lifting piece 213, and the lifting piece 213 is connected to the bottom end of the roller conveyor 100.

[0041] The side of the housing 240 of the present invention is provided with a pressure injection ring, which is communicated with the interior of the housing 240. The pressure injection ring serves as a connecting component between the grease gun and the mechanical equipment, simplifies the lubrication process, and improves work efficiency.

[0042] The roller conveyor 100 of the present invention includes a second motor 110, two second connecting assemblies 120, two drive roller assemblies 130, and a mounting frame 140. The second motor 110 and the drive roller assemblies 130 are both mounted on the mounting frame 140. The bottom end of the mounting frame 140 is connected to the lifting member 213. The second motor 110 is located between the two second connecting assemblies 120. One end of the second connecting assembly 120 is connected to the second motor 110, and the other end is connected to the drive roller assemblies 130. The second motor 110 is in communication with a control system. The second motor 110 is connected to the drive roller assemblies 130 through the second connecting assembly 120 for transmission.

[0043] The drive roller assembly 130 of the present invention includes a driving roller 131, a plurality of driven rollers 132, a main transmission belt, and a plurality of auxiliary transmission belts. The driving roller 131 and the driven rollers 132 are both rotatably connected to a mounting frame 140. The driving roller 131 is connected to the second connecting assembly 120. The driving roller 131 and the driven roller 132 are connected by a main transmission belt, and adjacent driven rollers 132 are connected by auxiliary transmission belts. The second motor 110 drives the driving roller 131 to rotate via the second connecting assembly 120. The driving roller 131 drives the plurality of driven rollers 132 to rotate via a transmission assembly 133 and transmission belts, thereby achieving material transportation. The drive roller assembly 130 also includes a plurality of transmission assemblies 133, which are mounted at the ends of the driving roller 131 and the driven roller 132. The main transmission belt and auxiliary transmission belt are both mounted between adjacent transmission assemblies 133. The second motor 110 drives the active roller 131 to rotate through the second connecting assembly 120 , and the active roller 131 drives the plurality of driven rollers 132 to rotate through the transmission assembly 133 and the transmission belt to achieve material transportation.

[0044] The height detection mechanism of this utility model includes several cameras and / or several laser radars. The cameras use image processing technology to restore the scale of the scene and objects. The laser radar transmits laser pulses and receives the reflected signals to accurately calculate the position of each point in three-dimensional space, creating high-quality three-dimensional point cloud data.

[0045] The working principle of a transmission workbench in this embodiment is as follows: the control system receives the input end height information, adjusts the height of the roller transmission device to be consistent with the input end height through the lifting mechanism and the height detection mechanism, the control system feeds back a signal to the input end, and starts the roller conveying device 100, the material is transmitted through the roller conveying device 100, and the lifting mechanism is controlled to self-lock. At this time, the material has been transmitted to the roller conveying device 100, the control system controls all lifting mechanisms to adjust the height to be consistent with the input end height at the same time, and the roller conveying device 100 is in a horizontal position. The control system starts the roller conveying device 100 to transmit the material. After the transmission is completed, the control system controls the roller conveying device 100 to stop and controls the lifting mechanism to self-lock. The material transmission is completed.

[0046] Example 2

[0047] This embodiment is a second embodiment of a conveying workbench. This embodiment is similar to the first embodiment, except that it also includes a length detection mechanism for detecting whether all materials have been conveyed to the roller conveyor 100. The length detection mechanism is installed on the roller conveyor 100 and is in communication with the control system. The length detection mechanism can detect whether all materials have been conveyed to the roller conveyor 100. After the materials have been conveyed to the roller conveyor 100, the length detection mechanism transmits a signal to the control system. The control system controls the lifting mechanism to confirm whether the heights of all lifting mechanisms are adjusted to the same level. After the adjustment is completed, the control system provides feedback to the roller conveyor 100 for conveying.

[0048] The working principle of a transmission workbench in this embodiment is as follows: the control system receives the input end height information, adjusts the height of the roller transmission device to be consistent with the input end height through the lifting mechanism and the height detection mechanism, the control system feeds back a signal to the input end, and starts the roller conveying device 100, the material is transmitted through the roller conveying device 100, the length detection device detects that the material input is completed, and at the same time the control system receives the input completion signal from the input end, the control system controls the roller conveying device 100 to stop, and controls the lifting mechanism to self-lock, at this time the material has been transmitted to the roller conveying device 100, the control system controls all lifting mechanisms to adjust the height to be consistent with the input end height at the same time, at this time the roller conveying device 100 is in a horizontal position, the control system starts the roller conveying device 100 to transmit the material, the length detection mechanism detects whether the material transmission is completed, the length detection mechanism detects that the material transmission is completed, and at the same time the control system receives the output completion signal transmitted from the output end, the control system controls the roller conveying device 100 to stop and controls the lifting mechanism to self-lock, after the transmission is completed, the material transmission is completed.

[0049] Example 3

[0050] Figure 1 The third embodiment of a conveying workbench is shown in this embodiment. This embodiment is similar to the first embodiment, except that the lifting mechanisms of the present invention are grouped into two. The lifting mechanisms within the group are disposed opposite each other on either side of the roller conveyor 100, and each group of lifting mechanisms is disposed sequentially along the length of the roller conveyor 100. The installation of the lifting mechanisms on both sides of the roller conveyor 100 provides improved stability and balance, and is particularly suitable for carrying heavy objects. It can disperse the load, reduce the safety risks caused by unilateral overload, enable the entire system to withstand greater weight, and help reduce tilting and shaking. Furthermore, the lifting mechanisms in the same group can operate simultaneously, achieving rapid and smooth vertical lifting of materials, greatly improving work efficiency. Overload protection mechanisms and limit switches can also be installed on the lifting mechanisms to further ensure the safety and reliability of the lifting process.

[0051] In the specific contents of the above-mentioned specific implementation methods, the various technical features can be combined in any non-contradictory manner. In order to make the description concise, not all possible combinations of the above-mentioned technical features are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0052] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. A person skilled in the art will be able to make other variations or modifications based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A transmission workbench, characterized in that: include A roller conveying device (100) for conveying materials; Several lifting mechanisms are used to lift and lower the roller conveyor device (100) according to the height of the material at the input end, and are sequentially installed on both sides of the roller conveyor device (100) along the material conveying direction, with their lower ends grounded; A height detection mechanism, used to detect the height of the material at the input end, which is installed on the lifting mechanism; The control system is used for receiving and outputting signals and is communicatively connected with the roller conveying device (100), the lifting mechanism, and the height detection mechanism.

2. The transfer workbench according to claim 1, characterized in that: The lifting mechanism comprises a lifting assembly (210), a support member (220), and a drive assembly, wherein the drive assembly is connected to the lifting assembly (210), one end of the support member (220) is grounded, and the other end is slidably connected to the lifting assembly (210), a side end of the lifting assembly (210) is connected to the roller conveying device (100), and the drive assembly is in communication with the control system.

3. The transmission workbench according to claim 2, characterized in that: The lifting assembly (210) includes a lifting rod (211), a nut, and a stop sleeve. The driving assembly is connected to the nut and drives the nut to rotate. The lifting rod (211) is slidably mounted inside the support member (220), and a portion thereof protrudes from the support member (220). The stop sleeve is mounted inside the support member (220) and is sleeved on the lifting rod (211). The nut is sleeved on the lifting rod (211) to form a screw-nut transmission pair. The side of the lifting rod (211) is connected to the roller conveying device (100).

4. The transfer workbench according to claim 3, characterized in that: The lifting mechanism further includes a casing (240), the driving assembly includes a first motor (231), a worm wheel (232) and a worm (233), the casing (240) is provided with a first opening at both upper and lower ends, and a second opening at the side end, the casing (240) is mounted on the top of the support member (220), the worm wheel (232) is mounted inside the casing (240), and is connected to the lifting rod (211) through the nut, the two ends of the lifting rod (211) pass through the first opening, the worm (233) is engaged with the worm wheel (232), and its end passes through the second opening to be connected to the first motor (231), and the first motor (231) is communicatively connected to the control system.

5. The transfer workbench according to claim 3, characterized in that: The lifting assembly (210) further includes a first connecting assembly (212), wherein the first connecting assembly (212) is connected to the lifting rod (211), and a side portion thereof is connected to the roller conveying device (100).

6. The transfer workbench according to claim 4, characterized in that: A pressure oil ring is provided on the side of the casing (240) and is communicated with the interior of the casing (240).

7. The transfer workbench according to claim 2, characterized in that: The roller conveying device (100) comprises a second motor (110), two second connecting components (120), two transmission roller groups (130), and a mounting frame (140). The second motor (110) and the transmission roller group (130) are both mounted on the mounting frame (140). The bottom end of the mounting frame (140) is connected to the lifting component (210). The second motor (110) is located between the two second connecting components (120). One end of the second connecting component (120) is connected to the second motor (110), and the other end is connected to the transmission roller group (130). The second motor (110) is connected to the control system in a communication manner.

8. The transfer workbench according to claim 7, characterized in that: The transmission roller group (130) includes an active roller (131), a plurality of driven rollers (132), a main transmission belt, and a plurality of auxiliary transmission belts. The active roller (131) and the driven roller (132) are both rotatably connected to the mounting frame (140). The active roller (131) is connected to the second connecting assembly (120). The active roller (131) and the driven roller (132) are connected via the main transmission belt, and two adjacent driven rollers (132) are connected via the auxiliary transmission belt.

9. The transfer workbench according to claim 1, characterized in that: It also includes a length detection mechanism for detecting whether all materials have been conveyed to the roller conveying device (100), which is installed on the roller conveying device (100), and the length detection mechanism is communicatively connected with the control system.

10. The transfer workbench according to claim 1, characterized in that: The two lifting mechanisms form a group, and the lifting mechanisms in the group are arranged on both sides of the roller conveying device (100) facing each other.

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