An overtaking system for circular RGV

Abstract

The present invention discloses an overtaking system applied to a ring-shaped RGV, comprising a trolley and a track assembly, wherein the track assembly comprises a main track, a stagnant track, an overtaking track and a switching member; the switching member comprises a first straight rail, a second straight rail, a third straight rail, a fourth straight rail, a first curved rail, a second curved rail and a third curved rail; when the main track is adapted to the first straight rail and the stagnant track, and the main track is adapted to the second straight rail, the third straight rail, the fourth straight rail and the stagnant track, the trolley is in a normal traveling state; when the main track is adapted to the first curved rail, the second curved rail, the fourth straight rail and the overtaking track, and the main track is adapted to the second curved rail and the overtaking track, the trolley is in an overtaking state; when the trolley in the stagnant track position is loading or unloading goods or is stagnant due to a fault, the switching member is slid and rotated to adjust so that the subsequent trolley enters the overtaking track and overtakes, thereby improving the transportation efficiency of the system.

Description

Technical Field

[0001] The present invention relates to the technical field of logistics, warehousing and transportation, and in particular to an overtaking system applied to a ring-shaped RGV. Background Art

[0002] With the continuous development of the logistics and transportation industry, the efficiency requirements for logistics and transportation are also constantly increasing. The circular shuttle system is widely used in automated warehousing systems due to its wide operating capacity range and high scheduling flexibility.

[0003] In a circular line, increasing the number of trolleys is often used to enhance the system's transport capacity. However, considering the structural characteristics of the circular shuttle system, all trolleys run sequentially on a closed track. When the first and last trolleys in the system experience a "catch-up effect," the system is about to reach peak capacity. Once this "catch-up effect" occurs, system congestion is very likely to occur. Furthermore, in a closed circular line, if a trolley breaks down or loading and unloading stagnates, all subsequent trolleys will need to stop and wait, significantly reducing the system's transport capacity. Summary of the Invention

[0004] The object of the present invention is to provide an overtaking system for a circular RGV to solve the above-mentioned deficiencies in the prior art.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A passing system for a circular RGV includes a trolley and a track assembly, wherein the track assembly includes a main track, a stagnant track, an overtaking track, and a reversing member;

[0007] The switching member includes a first straight rail, a second straight rail, a third straight rail, a fourth straight rail, a first curved rail, a second curved rail and a third curved rail;

[0008] When the main track is adapted to the first straight track and the stagnant track, and the main track is adapted to the second straight track, the third straight track, the fourth straight track and the stagnant track, the trolley is in a normal traveling state;

[0009] When the main track is adapted to the first curved track, the second curved track, the fourth straight track and the overtaking track, and the main track is adapted to the second curved track and the overtaking track, the trolley is in an overtaking state.

[0010] Preferably, it further includes a support frame, a sliding frame is slidably arranged on the support frame, the third straight rail and the second curved rail are fixedly connected to the support frame, and the first straight rail, the second straight rail, the first curved rail and the third curved rail are fixedly connected to the sliding frame.

[0011] Preferably, it further comprises a turntable, which is fixedly connected to the fourth straight rail, and a connecting rod is provided between the turntable and the sliding frame, with both ends of the connecting rod being rotatably connected to the turntable and the sliding frame respectively.

[0012] Preferably, both ends of the fourth straight rail are provided with arc-shaped surfaces, and the stagnant rail, overtaking rail, third straight rail and second curved rail are all provided with arc-shaped surfaces.

[0013] Preferably, a motor is fixedly provided on the support frame, a rotating plate is fixedly provided on the output shaft of the motor, a fixed seat is fixedly provided on the rotating plate, a sliding seat is slidably provided on the fixed seat, a rocker arm is rotatably provided on the sliding seat, and the rocker arm is rotatably connected to the sliding frame.

[0014] Preferably, it further comprises a buffer assembly for buffering the vibrations received by the first curved rail, the third curved rail and the sliding frame when the trolley is in the overtaking state;

[0015] The buffer assembly includes a buffer spring, which is arranged between the sliding seat and the fixed seat, and two ends of the buffer spring are fixedly connected to the sliding seat and the fixed seat respectively.

[0016] Preferably, the buffer assembly further comprises a guide block rotatably arranged on the rocker arm, two guide rails are fixedly arranged on the support frame, a guide groove is formed between the two guide rails, and the guide block is arranged in the guide groove.

[0017] Preferably, both guide rails are provided with arc-shaped portions, the two arc-shaped portions correspond to each other, and are arranged in opposite directions with bending directions.

[0018] Preferably, the trolley is provided with two driving wheels, the trolley is fixedly provided with two slide rails, and both of the slide rails are provided with driven wheels.

[0019] Preferably, the rotation angle of the turntable is 45°.

[0020] In the above technical solution, the present invention provides an overtaking system for a circular RGV with the following beneficial effects:

[0021] 1. When a trolley in a stagnant track is loading or unloading goods or is stalled due to a fault, the reversing member is adjusted to slide and rotate so that the subsequent trolley enters the overtaking track and overtakes, thereby improving the transportation efficiency of the system.

[0022] 2. When the trolley passes through the overtaking track to overtake, friction occurs between the trolley wheels and the track, causing the first curved rail, the third curved rail and the sliding frame to vibrate. At this time, the buffer assembly is used to buffer the vibration of the first curved rail, the third curved rail and the sliding frame to avoid vibration of the sliding frame after long-term use, and unstable sliding between the sliding frame and the support frame, resulting in deviation in the adjustment between the reversing member and the main track, the stagnation track and the overtaking track.

[0023] 3. By making the two driven wheels on the inner side of the track slidably connected to the trolley through the slide rail, when passing through the curved track during overtaking, the driven wheels slide laterally, increasing the degree of freedom between the trolley's running wheels and the track, so that there is room for free adjustment of the running wheels at the front and rear positions, avoiding the formation of an angle between the front and rear wheels when the trolley overtakes and passes through the curved track, avoiding the braking of the trolley due to the force, and even serious damage to the track.

[0024] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

[0025] This application document provides an overview of various implementations or examples of the technology described in this disclosure, and is not a comprehensive disclosure of the full scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0027] Figure 1 A schematic diagram of the structure of a trolley provided in an embodiment of the present invention;

[0028] Figure 2 A schematic diagram of the overall structure of the track provided in an embodiment of the present invention;

[0029] Figure 3 A schematic diagram of a track structure viewed from above provided by an embodiment of the present invention;

[0030] Figure 4 A schematic diagram of the support frame and sliding frame structure provided by an embodiment of the present invention;

[0031] Figure 5 A schematic diagram of a top view of the support frame and the sliding frame provided in an embodiment of the present invention;

[0032] Figure 6 A schematic diagram of the structure of a buffer mechanism provided in an embodiment of the present invention;

[0033] Figure 7A schematic diagram of the guide rail structure provided in an embodiment of the present invention.

[0034] Description of reference numerals:

[0035] 1. Trolley; 11. Driving wheel; 12. Driven wheel; 13. Slide rail; 2. Main track; 21. Stagnant track; 22. Overtaking track; 3. First straight rail; 31. Second straight rail; 32. Third straight rail; 33. Fourth straight rail; 4. First curved rail; 41. Second curved rail; 42. Third curved rail; 5. Support frame; 51. Sliding frame; 52. Guide rail; 53. Arc-shaped portion; 6. Turntable; 61. Connecting rod; 7. Motor; 71. Turntable; 72. Fixed seat; 73. Sliding seat; 74. Buffer spring; 75. Rocker arm; 76. Guide block. DETAILED DESCRIPTION

[0036] To make the purpose, technical solutions, and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0037] See also Figure 1-Figure 7, an overtaking system for a circular RGV, comprising a trolley 1 and a track assembly, the track assembly comprising a main track 2, a stagnant track 21, an overtaking track 22 and a switching member; the switching member comprising a first straight rail 3, a second straight rail 31, a third straight rail 32, a fourth straight rail 33, a first curved rail 4, a second curved rail 41 and a third curved rail 42; when the main track 2 is adapted to the first straight rail 3 and the stagnation track 21, and the main track 2 is adapted to the second straight rail 31, the third straight rail 32, the fourth straight rail 33 and the stagnation track 21, the trolley 1 is in a normal traveling state; when the main track 2 is adapted to the first curved rail 4, the second curved rail 41, the fourth straight rail 33 and the overtaking track 22, and the main track 2 is adapted to the second curved rail 41 and the overtaking track 22, the trolley 1 is in an overtaking state. When the trolley 1 travels to the stagnation track 21 position and a fault occurs or loading and unloading is required, the trolley 1 is in an overtaking state by adjusting the first straight rail 3, the second curved rail 41 and the overtaking track 22. The second straight rail 31, the third straight rail 32, the fourth straight rail 33, the first curved rail 4, the second curved rail 41 and the third curved rail 42 are adjusted to slide and rotate, and the track is switched to the overtaking state to avoid the stagnant trolley 1, thereby improving the transportation efficiency of the system; the main rail 2, the stagnant rail 21 and the overtaking rail 22 in the present invention are all set as two, that is, when one of the main rails 2 is adapted to the first straight rail 3 and one of the stagnant rails 21, the other main rail 2 is adapted to the other stagnant rail 21 through the second straight rail 31, the third straight rail 32 and the fourth straight rail 33, thereby forming a normal travel track for the trolley 1; when one of the main rails 2 is adapted to one of the overtaking rails 22 through the first curved rail 4, the second curved rail 41 and the fourth straight rail 33, the other main rail 2 is adapted to the other overtaking rail 22 through the second curved rail 41, so that the trolley 1 can move to the overtaking rail 22.

[0038] As mentioned in the present invention, the overtaking state of the trolley 1 is that during the movement of the trolley 1, through the adjustment of the track, the trolley 1 enters the moving direction of the overtaking track 22 from the main track 2, and the normal moving state is that during the movement of the trolley 1, the trolley 1 enters the moving direction of the stagnant track 21 from the main track 2.

[0039] It also includes a support frame 5, on which a sliding frame 51 is slidingly provided, the third straight rail 32 and the second curved rail 41 are fixedly connected to the support frame 5, and the first straight rail 3, the second straight rail 31, the first curved rail 4 and the third curved rail 42 are fixedly connected to the sliding frame 51. When switching to the overtaking state, the sliding frame 51 slides, driving the first straight rail 3, the second straight rail 31, the first curved rail 4 and the third curved rail 42 to slide synchronously, the first straight rail 3 and the second straight rail 31 are staggered with the main rail 2 and the stagnant rail 21, and the third curved rail 42 is aligned with the main rail 2 and the overtaking rail 22, and the first curved rail 4 is aligned with the main rail 2 and the second curved rail 41. At the same time, the fourth straight rail 33 is rotated to align with the second curved rail 41 and the stagnation rail 21, so that the trolley 1 can travel from the main rail 2 to the overtaking rail 22.

[0040] The turntable 6 is also provided with a connecting rod 61, and the two ends of the connecting rod 61 are rotatably connected to the turntable 6 and the sliding frame 51 respectively. When switching to the overtaking state, the sliding frame 51 slides, and the turntable 6 drives the fourth straight rail 33 to rotate by pushing the connecting rod 61, so that the fourth straight rail 33 is aligned with the second curved rail 41 and the stagnant rail 21, completing the switching of the overtaking state. The rotation angle of the turntable 6 is 45 degrees. Whether it is switching between the normal traveling state and the overtaking state, the turntable 6 is rotated 45 degrees or reset by 45 degrees, which can better allow the sliding frame 51 to ensure the stability of the fourth straight rail 33 through the connecting rod 61.

[0041] Both ends of the fourth straight rail 33 are provided with curved surfaces, and the stagnant rail 21, the overtaking rail 22, the third straight rail 32 and the second curved rail 41 are all provided with curved surfaces. The curved surface on the fourth straight rail 33 is convex, and the curved surfaces provided on the stagnant rail 21, the overtaking rail 22, the third straight rail 32 and the second curved rail 41 are concave, so that the fourth straight rail 33 is not disturbed during the rotation process, and the curved surface is adapted to the stagnant rail 21, the overtaking rail 22, the third straight rail 32 and the second curved rail 41, so that the trolley 1 can move more stably.

[0042] A motor 7 is fixedly provided on the support frame 5, a rotating plate 71 is fixedly provided on the output shaft of the motor 7, a fixed seat 72 is fixedly provided on the rotating plate 71, a sliding seat 73 is slidably provided on the fixed seat 72, a rocker arm 75 is rotatably provided on the sliding seat 73, the rocker arm 75 is rotatably connected to the sliding frame 51, the motor 7 drives the rotating plate 71 to rotate, and through the rotating rocker arm 75, the sliding frame 51 is pushed or pulled to slide, thereby completing the switching of the normal travel or overtaking state of the trolley 1.

[0043] The trolley 1 further includes a buffer assembly, which buffers the vibrations received by the first curved rail 4, the third curved rail 42 and the sliding frame 51 when the trolley 1 is in the overtaking state; the buffer assembly includes a buffer spring 74, which is arranged between the sliding seat 73 and the fixed seat 72, and the two ends of the buffer spring 74 are fixedly connected to the sliding seat 73 and the fixed seat 72 respectively. When the trolley 1 is in the overtaking state, the trolley 1 goes straight from the main track 2 into the first curved rail 4 and the third curved rail 42. Due to the conversion from the straight state to the turning state, extrusion friction occurs between the wheels and the first curved rail 4 and the third curved rail 42, which will cause the first curved rail 4 and the third curved rail 42 and the sliding frame 51 to vibrate. After long-term use, the sliding between the sliding frame 51 and the support frame 5 will become unstable. The cam 74 is used to move the first and third curved rails 4 and 42 so that the trolley 1 can move on the track 22 and the trolley 1 can move on the track 22.

[0044] The buffer assembly also includes a guide block 76 rotatably arranged on the rocker arm 75, and two guide rails 52 are fixedly arranged on the support frame 5. A guide groove is formed between the two guide rails 52, and the guide block 76 is arranged in the guide groove. An arc portion 53 is provided on each of the two guide rails 52, and the two arc portions 53 correspond to each other and are bent in opposite directions. When the trolley 1 is in the overtaking state, the guide rail is located between the two arc portions 53. At this time, the trolley 1 goes straight from the main track 2 into the first curved rail 4 and the third curved rail 42. Under the action of vibration, the sliding frame 51 slides slightly with the rocker arm 75 and is buffered by the buffer spring 74. When the trolley 1 is not in the overtaking state, the guide block 76 is located with the two arc portions 53, which can ensure the stability of the sliding frame 51, the first curved rail 4 and the third curved rail 42.

[0045] The trolley 1 is provided with two driving wheels 11, and two slide rails 13 are fixedly provided on the trolley 1. The two slide rails 13 are provided with driven wheels 12. The two driven wheels 12 located on the inner side of the track are slidably connected to the trolley 1 through the slide rails 13. When the trolley 1 passes through a curved track during overtaking, the force applied to the trolley 1 will have an angle. At this time, the driven wheels 12 slide horizontally, so that there is space for free adjustment of the running wheels at the front and rear positions, thereby avoiding the formation of an angle between the front and rear wheels when the trolley 1 overtakes and passes through a curved track, and preventing the trolley 1 from braking due to the force.

[0046] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims.

Claims

1. An overtaking system for a circular RGV, comprising a trolley (1) and a track assembly, characterized in that: The track assembly comprises two main tracks (2), a stagnant track (21), an overtaking track (22), and a reversing member; The reversing member comprises a first straight rail (3), a second straight rail (31), a third straight rail (32), a fourth straight rail (33) fixedly arranged on the turntable (6), a first curved rail (4), a second curved rail (41), and a third curved rail (42); When one main track (2) is matched with the first straight track (3) and a stagnant track (21), and another main track (2) is matched with the second straight track (31), the third straight track (32), the fourth straight track (33) and another stagnant track (21), the trolley (1) is in a normal traveling state; When one main track (2) is adapted to the first curved track (4), the second curved track (41), the fourth straight track (33) and an overtaking track (22), and another main track (2) is adapted to the third curved track (42) and another overtaking track (22), the trolley (1) is in an overtaking state; It also includes a support frame (5), a sliding frame (51) is slidably provided on the support frame (5), the third straight rail (32) and the second curved rail (41) are fixedly connected to the support frame (5), and the first straight rail (3), the second straight rail (31), the first curved rail (4) and the third curved rail (42) are fixedly connected to the sliding frame (51); A motor (7) is fixedly provided on the support frame (5), a rotating plate (71) is fixedly provided on the output shaft of the motor (7), a fixed seat (72) is fixedly provided on the rotating plate (71), a sliding seat (73) is slidably provided on the fixed seat (72), a rocker arm (75) is rotatably provided on the sliding seat (73), and the rocker arm (75) is rotatably connected to the sliding frame (51); It also includes a buffer component for buffering the vibrations received by the first curved rail (4), the third curved rail (42) and the sliding frame (51) when the trolley (1) is in the overtaking state; The buffer assembly includes a buffer spring (74), the buffer spring (74) is arranged between the sliding seat (73) and the fixed seat (72), and two ends of the buffer spring (74) are fixedly connected to the sliding seat (73) and the fixed seat (72) respectively; The buffer assembly further includes a guide block (76) rotatably arranged on the rocker arm (75), two guide rails (52) are fixedly arranged on the support frame (5), a guide groove is formed between the two guide rails (52), and the guide block (76) is arranged in the guide groove; The two guide rails (52) are both provided with an arc-shaped portion (53), and the two arc-shaped portions (53) correspond to each other and are arranged in opposite bending directions.

2. The overtaking system for a circular RGV according to claim 1, characterized in that: It also includes a turntable (6), the turntable (6) is fixedly connected to the fourth straight rail (33), a connecting rod (61) is provided between the turntable (6) and the sliding frame (51), and the two ends of the connecting rod (61) are rotatably connected to the turntable (6) and the sliding frame (51) respectively.

3. The overtaking system for a circular RGV according to claim 1, characterized in that: Both ends of the fourth straight rail (33) are provided with arcuate surfaces, and the stagnant rail (21), the overtaking rail (22), the third straight rail (32) and the second curved rail (41) are all provided with arcuate surfaces.

4. The overtaking system for a circular RGV according to claim 1, characterized in that: Two driving wheels (11) are provided on the trolley (1), two slide rails (13) are fixedly provided on the trolley (1), and driven wheels (12) are provided on both slide rails (13).

5. The overtaking system for a circular RGV according to claim 2, characterized in that: The rotation angle of the turntable (6) is 45°.

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