Multi-station annular circulating line

Abstract

The invention discloses a multi-station annular circulation line which comprises a concave closed annular circulation groove formed in the upper surface of a raised floor, a circulation chain capable of circularly operating is embedded in the circulation groove, one or more workbenches are detachably connected to the circulation chain, the workbenches are arranged at intervals, and the workbenches are arranged on the raised floor. A driving structure used for driving the circulating chain to rotate is installed in the lower space of the raised floor, guiding structures used for guiding the circulating chain are arranged at the four inner side corners of the circulating chain, and a tensioning device used for tensioning the circulating chain is further arranged on the inner side of one straight edge of the circulating chain. According to the technical scheme, the periphery of the station workbench is flat, the risk of stumbling caused by other protrusions is avoided, the conveying efficiency is remarkably improved through the multi-station annular circulation line, the labor cost is greatly reduced, and the safety is remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of logistics production line technology, specifically to a multi-station circular circulation line, which is a work platform for manual pre-assembly. Background Technology

[0002] In automotive production lines, continuous manual pre-assembly platforms are typically used to improve assembly efficiency for manual pre-assembly. However, currently used continuous pre-assembly platforms limit worker movement to a fixed side of the workbench, and the conveyor wheels are positioned outside the platform, which limits both efficiency and safety.

[0003] There is a lack of a continuous, looping line to address the efficiency and safety issues raised in existing technologies. Summary of the Invention

[0004] Therefore, the present invention provides a multi-station circular circulation line to solve the above-mentioned problems in the prior art. To achieve the above objective, the present invention provides the following technical solution: According to a first aspect of the present invention, a multi-station circular circulation line includes a concave closed annular circulation groove formed on the upper surface of an elevated floor, a circulating chain embedded in the circulation groove, at least one workbench detachably connected to the circulation chain, the at least one workbench being spaced apart, a drive structure for driving the circulation chain to rotate installed in the lower space of the elevated floor, guide structures for guiding the circulation chain at the four inner corners of the circulation chain, and a tensioning device for tensioning the circulation chain on the inner side of one of the straight edges of the circulation chain.

[0005] Furthermore, the drive structure includes a drive wheel, a transmission chain, a drive motor, and a bracket. The bracket is a rectangular frame structure, and multiple rotatable drive wheels are installed inside the bracket. The multiple drive wheels are connected by a transmission chain. The output shaft of the drive motor is connected to one of the drive wheels through a reversing reducer. The outer periphery of the transmission chain is provided with teeth for driving the rotation of the circulating chain.

[0006] Furthermore, an overload protection device is also provided on the wide side of the bracket to protect the drive motor from overload.

[0007] Furthermore, the overload protection device includes a limit frame installed on the outer side of the wide side of the bracket. A limit switch is provided on the side of the outer end of the limit frame. The wide side of the bracket is connected to the bottom frame of the raised floor by a spring. When the drive motor is overloaded, the bracket moves laterally, causing the outer end of the limit frame to trigger the limit switch to achieve power failure protection.

[0008] Furthermore, the circulating chain is equipped with at least one pair of push heads, one of which has a round hole and the other has an elongated hole. The two sides of the worktable are provided with sliding pins, which are respectively inserted into the round hole and the elongated hole.

[0009] Furthermore, the bottom of the workbench is equipped with casters that make rolling contact with the raised floor.

[0010] Furthermore, the bottom frame of the workbench is covered with an outer protective plate, and the casters and pins are located inside the cavity enclosed by the outer protective plate.

[0011] Furthermore, the tensioning device includes an adjusting bolt and an adjusting frame. One end of the adjusting bolt is threaded onto the bottom frame of the raised floor, and the other end of the adjusting bolt is fixed to the inner side of the adjusting frame. The outer side of the adjusting frame is used to abut against the inner circumferential surface of the circulating chain.

[0012] Furthermore, multiple worktables are evenly spaced along the circular rotation direction of the circulating chain.

[0013] Furthermore, the guide structure includes two guide sprockets rotatably connected to the lower surface of the raised floor. The guide sprockets mesh with the circulating chain for transmission, and the line connecting the centers of the two guide sprockets forms a 45° angle with the long or wide side of the circulating chain.

[0014] The present invention has the following advantages: the multi-station circular circulation line of the present invention has a flat surface around the workstation, avoiding the risk of tripping caused by other protrusions. The multi-station circular circulation line significantly improves the conveying efficiency, greatly reduces labor costs, and significantly improves safety. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the upper surface of a multi-station circular circulation line provided in some embodiments of the present invention.

[0016] Figure 2 This is a schematic diagram of the back structure of a multi-station circular circulation line provided in some embodiments of the present invention.

[0017] Figure 3 This is a schematic diagram of a driving structure for a multi-station circular circulation line provided in some embodiments of the present invention.

[0018] Figure 4 This is a schematic diagram of a tensioning device for a multi-station annular circulating line provided in some embodiments of the present invention.

[0019] Figure 5 This is a schematic diagram of the pusher of a workbench drive chain for a multi-station circular production line, provided for some embodiments of the present invention.

[0020] Figure 6 This is a schematic diagram of an overload protection device for a multi-station circular circulation line provided in some embodiments of the present invention.

[0021] Figure 7 This is a schematic diagram of a framed workbench for a multi-station circular circulation line, provided for some embodiments of the present invention.

[0022] Figure 8 This is a schematic diagram of a workbench for installing casters on a multi-station circular circulation line, provided for some embodiments of the present invention.

[0023] Figure 9 This is a schematic diagram of a workbench for installing pins on a multi-station circular circulation line, provided for some embodiments of the present invention.

[0024] Figure 10 This is a schematic diagram of the pins of a multi-station circular circulation line provided in some embodiments of the present invention.

[0025] In the diagram, A is the circulation trough, B is the workbench, C is the raised floor, 1 is the drive structure, 11 is the drive wheel, 12 is the overload protection device, 121 is the limit switch, 122 is the spring, 123 is the limit frame, 13 is the drive motor, 14 is the bracket, 15 is the transmission chain, 2 is the guide structure, 3 is the tensioning device, 31 is the adjusting bolt, 32 is the adjusting frame, 4 is the push head, 5 is the circulation chain, 6 is the outer protective plate, 7 is the caster wheel, and 8 is the pin. Detailed Implementation

[0026] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Example 1

[0028] like Figures 1 to 10 As shown, a multi-station annular circulation line according to a first aspect embodiment of the present invention includes a concave closed annular circulation groove A formed on the upper surface of an elevated floor C. A circulation chain 5 capable of circulating is embedded in the circulation groove A. At least one workbench B is detachably connected to the circulation chain 5, and the at least one workbench B is spaced apart. A drive structure 1 for driving the circulation chain 5 to rotate is installed in the lower space of the elevated floor C. A guide structure 2 for guiding the circulation chain 5 is provided at the four inner corners of the circulation chain 5. A tensioning device 3 for tensioning the circulation chain 5 is also provided on the inner side of one of the straight edges of the circulation chain 5.

[0029] In the above embodiments, it should be noted that during use, the driving structure 1 drives the circulating chain 5 to rotate in a ring around the circulating groove A. When rotating, it drives at least one workbench B on it to rotate synchronously. The driving structure 1 can be composed of a motor driving a sprocket or a chain with teeth. The guide structure 2 can be composed of one or more sprockets. The tensioning device 3 can use springs, electric push rods, hydraulic cylinders or air cylinders to tension the inner edge of the circulating chain 5.

[0030] The technical effects achieved by the above embodiments are as follows: Through the multi-station circular circulation line of this embodiment, the workbench is flat around the workstation, avoiding the risk of tripping caused by other protrusions. The multi-station circular circulation line significantly improves the conveying efficiency, greatly reduces labor costs, and significantly improves safety.

[0031] Example 2

[0032] like Figure 3 As shown, a multi-station circular circulation line includes all the contents of Embodiment 1. In addition, the drive structure 1 includes drive wheels 11, a transmission chain 15, a drive motor 13, and a support 14. The support 14 is a rectangular frame structure, and multiple rotatable drive wheels 11 are arranged inside the support 14. The multiple drive wheels 11 are connected by the transmission chain 15. The output shaft of the drive motor 13 is connected to one of the drive wheels 11 through a reversing reducer. The outer periphery of the transmission chain 15 is provided with teeth for driving the rotation of the circulation chain 5. Specifically, there are three drive wheels 11. The three drive wheels 11 are arranged in a triangular pattern inside the support 14 under the lower surface of the raised floor C. The outer periphery of the three drive wheels 11 is surrounded by a transmission chain 15 that is connected to the drive wheels 11. The outer side of the transmission chain 15 is evenly distributed with teeth that mesh with the circulating chain 5, so that when the drive wheels 11 rotate, the circulating chain 5 is driven to rotate synchronously. The drive motor 13 is a DC motor. The output shaft of the drive motor 13 is connected to the input shaft of the commutator reducer. The output shaft of the commutator reducer is connected to the innermost drive wheel 11. Preferably, the commutator reducer is a bevel gear commutator.

[0033] Optionally, an overload protection device 12 is also provided on the wide side of the bracket 14. The overload protection device 12 is used to protect the drive motor 13 from overload. Both the overload protection device 12 and the drive motor 13 are electrically connected to the microcontroller. When the overload protection device 12 detects an overload signal, the microcontroller outputs a signal to control the drive motor 13 to stop rotating.

[0034] Optional, such as Figure 6As shown, the overload protection device 12 includes a limiting frame 123 installed on the outer side of the wide side of the bracket 14. A limit switch 121 is provided on the outer side of the limiting frame 123. The wide side of the bracket 14 is connected to the bottom frame of the raised floor C by a spring 122. When the drive motor 13 is overloaded, the bracket 14 moves laterally, causing the outer end of the limiting frame 123 to trigger the limit switch 121 to achieve power-off protection. When the conveyor line is jammed for various reasons, the overload protection device 12 starts to work in order to protect the drive motor 13 from overload. Specifically, when the circulating chain 5 is jammed, the entire conveyor line stops, and the drive wheel 11 rotates due to the rotation of the drive motor 13. At this time, the bracket 14 is displaced laterally due to the rotation of the drive wheel 11. At this time, the limiting frame 13 fixed on the bracket 14 is displaced laterally until the limit switch 121 is triggered. At this time, the entire structure is de-energized, and the drive motor 13 stops working.

[0035] Example 3

[0036] like Figure 5 , Figure 9 as well as Figure 10 As shown, a multi-station circular circulation line includes all the contents of Embodiment 2. In addition, the circulation chain 5 is equipped with at least one pair of push heads 4, one of which has a round hole and the other has an elongated hole. The two sides of the workbench B are provided with sliding pins 8, and the two pins 8 are respectively inserted into the round hole and the elongated hole.

[0037] Optional, such as Figure 8 As shown, the bottom of the workbench B is equipped with casters 7 that roll in contact with the raised floor C. During operation, the casters 7 enable the workbench B to move quickly on the surface of the raised floor C, effectively reducing friction loss.

[0038] Optional, such as Figure 7 As shown, the bottom frame of workbench B is covered by an outer protective plate 6, and the casters 7 and pins 8 are located in the internal cavity enclosed by the outer protective plate 6. By setting the outer protective plate 6, the internal moving parts are effectively hidden, and the safety of workers when moving between workstations is effectively protected.

[0039] The technical effect achieved by the above embodiment is as follows: multiple worktables B are fixed to two push heads 4 by pins, the drive structure 1 drives the circulating chain 5 to move in a cycle, and the guide structure 2 guides it at the corner. As the circulating chain 5 moves slowly, the pin of the worktable B is inserted into the round hole of one of the push heads 4 for fixation, and the elongated hole of the other push head 4 is used for adjustment, so that the relative position of the circulating chain 5 and the worktable B can be adjusted when the worktable B passes through the guide structure 2.

[0040] Example 4

[0041] like Figure 4 As shown, a multi-station circular circulation line includes all the contents of Embodiment 3. In addition, the tensioning device 3 includes an adjusting bolt 31 and an adjusting frame 32. One end of the adjusting bolt 31 is threaded to the bottom frame of the raised floor C, and the other end of the adjusting bolt 31 is fixed to the inner side of the adjusting frame 32. The outer side of the adjusting frame 32 is used to abut against the inner circumferential surface of the circulation chain 5. Specifically, one end of the adjusting bolt 31 passes through the L-shaped connector and is fastened to the L-shaped connector by a nut. The L-shaped connector is fastened to the lower surface of the raised floor C by bolts.

[0042] The technical effect achieved by the above embodiment is that, in use, by tightening the nut on the adjusting bolt 31, the adjusting frame 32 is pushed to move toward one side of the circulating chain 5, thereby adjusting the tension of the circulating chain 5.

[0043] Example 5

[0044] like Figure 1 As shown, a multi-station circular circulation line includes all the contents of Embodiment 4. In addition, multiple workbenches B are equally spaced around the circular rotation direction of the circulation chain 5. By setting the workbenches B at equal intervals, uniform separation during manual operation is achieved, which significantly improves work efficiency.

[0045] Optional, such as Figure 2 As shown, the guide structure 2 includes two guide sprockets rotatably connected to the lower surface of the raised floor C. The guide sprockets mesh with the circulating chain 5 for transmission. The line connecting the centers of the two guide sprockets forms a 45° angle with the long or wide side of the circulating chain 5.

[0046] The technical effect achieved by the above embodiment is that by setting two guide sprockets in the guide structure 2, the circulating chain 5 is effectively guided when making right-angle turns, thus avoiding the occurrence of jamming of the circulating chain 5 during the cyclic operation.

[0047] In the description of this invention, it should be understood that the terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0048] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0049] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0050] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0051] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

[0052] In the description of this specification, the references to terms such as "Embodiment 1," "Embodiment 2," "Example," "Specific Example," or "Some Examples," etc., indicate that the specific method, apparatus, or feature described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, methods, apparatus, or features described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0053] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A multi-station circular circulation line, characterized in that, The system includes a recessed closed annular circulation groove (A) on the upper surface of the raised floor (C), a circulation chain (5) that can be circulated is embedded in the circulation groove (A), and at least one workbench (B) is detachably connected to the circulation chain (5). The workbench (B) is spaced apart. A drive structure (1) for driving the circulation chain (5) to rotate is installed in the lower space of the raised floor (C). A guide structure (2) for guiding the circulation chain (5) is provided at the four inner corners of the circulation chain (5). A tensioning device (3) for tensioning the circulation chain (5) is also provided on the inner side of one of the straight edges of the circulation chain (5).

2. The multi-station circular circulation line according to claim 1, characterized in that, The drive structure (1) includes a drive wheel (11), a transmission chain (15), a drive motor (13), and a bracket (14). The bracket (14) is a rectangular frame structure. Multiple rotatable drive wheels (11) are provided inside the bracket (14). The multiple drive wheels (11) are connected by transmission chain (15). The output shaft of the drive motor (13) is connected to one of the drive wheels (11) by a reversing reducer. The outer periphery of the transmission chain (15) is provided with teeth for driving the rotation of the circulating chain (5).

3. The multi-station circular circulation line according to claim 2, characterized in that, An overload protection device (12) is also provided on the wide side of the bracket (14) to protect the drive motor (13) from overload.

4. The multi-station circular circulation line according to claim 3, characterized in that, The overload protection device (12) includes a limit frame (123) installed on the outside of the wide side of the bracket (14). A limit switch (121) is provided on the side of the outer end of the limit frame (123). The wide side of the bracket (14) is connected to the bottom frame of the raised floor (C) by a spring (122). When the drive motor (13) is overloaded, the bracket (14) moves laterally, causing the outer end of the limit frame (123) to trigger the limit switch (121) to achieve power failure protection.

5. The multi-station circular circulation line according to claim 1, characterized in that, The circulating chain (5) is equipped with at least one pair of push heads (4), one of which has a round hole and the other has a long hole. The two sides of the worktable (B) are provided with sliding pins (8), and the two pins (8) are respectively inserted into the round hole and the long hole.

6. The multi-station circular circulation line according to claim 5, characterized in that, The bottom of the workbench (B) is equipped with casters (7) that make rolling contact with the raised floor (C).

7. The multi-station circular circulation line according to claim 6, characterized in that, The bottom frame of the workbench (B) is covered with an outer protective plate (6), and the casters (7) and pins (8) are located in the inner cavity enclosed by the outer protective plate (6).

8. The multi-station circular circulation line according to claim 1, characterized in that, The tensioning device (3) includes an adjusting bolt (31) and an adjusting frame (32). One end of the adjusting bolt (31) is threaded to the bottom frame of the raised floor (C), and the other end of the adjusting bolt (31) is fixed to the inner side of the adjusting frame (32). The outer side of the adjusting frame (32) is used to abut against the inner circumferential surface of the circulating chain (5).

9. The multi-station circular circulation line according to claim 1, characterized in that, Multiple worktables (B) are evenly distributed around the circular rotation direction of the circulating chain (5).

10. The multi-station circular circulation line according to claim 1, characterized in that, The guide structure (2) includes two guide sprockets rotatably connected to the lower surface of the raised floor (C). The guide sprockets mesh with the circulating chain (5) for transmission. The line connecting the centers of the two guide sprockets forms a 45° angle with the long or wide side of the circulating chain (5).

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