Stable roller conveyor

Abstract

The utility model relates to a stable roller way conveyor which comprises a base and a roller frame, a rotating roller is rotationally arranged on the roller frame, the base is located below the roller frame, the lower side of the roller frame is fixedly connected with a middle connecting plate and two side connecting plates, and the two side connecting plates are located at the front position and the rear position of the roller frame respectively. The middle of the middle connecting plate is rotationally connected to a center rotating shaft of the base, trundles are connected to the lower portions of the left side and the right side of the connecting plate, an annular rail is fixedly connected to the base, and the trundles are located in the annular rail and used for rolling along the annular rail when the roller frame rotates with the center rotating shaft as the center. The roller frame is rotationally connected to the center rotating shaft through the middle connecting plate, and on the basis, the annular track and the matched trundles are introduced to form a stable rotating base, so that shaking in the rotating process is remarkably reduced, the rotating speed is improved, and the service life of the roller frame is prolonged. And the overall stability and bearing capacity are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of conveyors, in particular to a stability roller conveyor. Background Art

[0002] In modern industrial automation, roller conveyors, as essential logistics equipment, are widely used in material handling, product assembly, packaging, and warehousing. Traditional roller conveyors typically consist of a series of parallel rollers, driven by manpower, gravity, or power, to transport goods in straight or curved lines. However, the continuous development of automated production lines has placed higher demands on the flexibility, stability, and efficiency of material handling. This is especially true in applications requiring rotation, where the limitations of traditional roller conveyors are becoming increasingly apparent.

[0003] While existing rotary roller conveyors can rotate and position cargo within a certain range, their structure often relies on a single central axis for support and rotation. This design is prone to shaking and instability when carrying heavy objects or rotating rapidly, affecting conveying efficiency and safety, and also limiting its application in high-precision production processes.

[0004] To address these issues, the industry has attempted to improve the stability of rotating roller conveyors by adding auxiliary support points, employing high-performance materials, and implementing precision machining. However, these improvements either increase the complexity and cost of the equipment or have limited effectiveness in practical applications, failing to fundamentally address the shaking problem during rotation. Therefore, there is an urgent need for a new type of stable roller conveyor that not only maintains the basic conveying function of traditional roller conveyors but also provides superior stability and precision during rotation to meet the high standards of material handling systems imposed by modern industrial automation production. Utility Model Content

[0005] The utility model provides a stable roller conveyor, which solves the above problems existing in the use process of the prior art.

[0006] The technical solution of the present utility model is implemented as follows: a stable roller conveyor, comprising a base and a roller frame, a plurality of rollers rotatably arranged on the roller frame, the base is located below the roller frame, a middle connecting plate and a side connecting plate are fixedly connected to the lower side of the roller frame, the middle connecting plate is located in the middle of the roller frame, two side connecting plates are provided and are respectively located at the front and rear positions of the roller frame, the middle of the base is connected to a central rotating shaft, the middle of the central connecting plate is rotatably connected to the central rotating shaft, casters are connected to the lower left and right sides of the side connecting plate, an annular track is fixedly connected to the base, the casters are located in the annular track, the casters are used to roll along the annular track when the roller frame rotates around the central rotating shaft, and the roller frame is provided with a rotating drive mechanism for driving the roller frame to rotate around the central rotating shaft.

[0007] Preferably, a first positioning device and a second positioning device are provided in the annular track, and the first positioning device and the second positioning device are both used to position the casters.

[0008] Preferably, the first positioning device and the second positioning device are on the same plane and are arranged vertically, and the first positioning device and the second positioning device both include positioning components arranged corresponding to each caster.

[0009] Preferably, the positioning assembly includes a positioning seat, an assembly box and an elastic assembly, the annular track is provided with an installation opening corresponding to each positioning assembly, the assembly box is fixedly connected below the installation opening of the annular track, the positioning seat is slidably fitted in the assembly box, the elastic assembly is located between the bottom of the assembly box and the positioning seat, the installation opening is used to expose the upper side of the positioning seat, and the upper end surface of the positioning seat has a U-shaped positioning opening.

[0010] Preferably, the positioning seat is provided with arc-surface peaks on both sides of the U-shaped positioning opening.

[0011] Preferably, the rotary drive mechanism includes a motor, a reducer, a driving wheel, a first driven wheel, a second driven wheel and a transmission belt, the reducer is fixed on the roller frame, the motor is connected to the reducer, a mounting plate is fixedly connected to the housing of the reducer, the first driven wheel and the second driven wheel are rotatably connected on the mounting plate and are close to the outer wall of the annular track, the output shaft of the reducer penetrates the mounting plate and is fixedly connected to the driving wheel, the transmission belt is fitted on the driving wheel, the first driven wheel and the second driven wheel, and the transmission belt is in contact with the outer wall of the annular track.

[0012] Preferably, a fixing foot is fixedly connected to the lower side of the annular track.

[0013] In summary, the beneficial effects of the present invention are:

[0014] 1. The roller frame of the utility model is rotatably connected to the central shaft on the base through the middle connecting plate. On this basis, the circular track and matching casters are introduced to form a stable rotating base, thereby significantly reducing the shaking during the rotation process and improving the overall stability and carrying capacity.

[0015] 2. The present invention also provides a first positioning device and a second positioning device in the annular track. The first positioning device and the second positioning device can enable the roller frame to accurately align with the position where the rotation stops when rotating back and forth between the two positions, and is not easily deviated from the position due to inertia. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 for Figure 1 Schematic diagram of the structure when observed from another angle;

[0019] Figure 3 It is a top view of the utility model;

[0020] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure along the AA direction;

[0021] Figure 5 This is a schematic diagram of the structure of the base and the annular track in the utility model;

[0022] Figure 6 This is a schematic diagram of the structure of the utility model without the base and the annular track.

[0023] In the figure: 1. Base; 2. Roller frame; 21. Middle connecting plate; 22. Side connecting plate; 23. Roller; 3. Center shaft; 4. Caster; 5. Annular track; 51. Mounting port; 61. First positioning device; 62. Second positioning device; 63. Positioning seat; 64. Assembly box; 65. Elastic component; 66. U-shaped positioning port; 67. Arc peak; 71. Motor; 72. Reducer; 73. Driving wheel; 74. First driven wheel; 75. Second driven wheel; 76. Transmission belt; 77. Mounting plate; 8. Fixed foot; 9. Roller motor. DETAILED DESCRIPTION

[0024] The following is a combination of the appended examples of the present invention. Figure 1-6 , clearly and completely describes 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 making any creative efforts shall fall within the scope of protection of the present invention.

[0025] Example:

[0026] like Figures 1 to 6 As shown, the utility model discloses a stable roller conveyor, including a base 1 and a roller frame 2, and a plurality of rollers 23 are rotatably arranged on the roller frame 2, and these rollers 23 are driven by a roller motor 9 in conjunction with a sprocket and a chain. The roller motor 9 drives multiple rollers 23 through the sprocket and the chain, which is a common means used by those skilled in the art, so it will not be described in detail here. In the utility model, the base 1 is located below the roller frame 2, and a middle connecting plate 21 and a side connecting plate 22 are fixedly connected to the lower side of the roller frame 2, wherein the middle connecting plate 21 is located in the middle of the roller frame 2, and two side connecting plates 22 are provided and are respectively located at the front and rear positions of the roller frame 2, and a central rotating shaft 3 is connected in the middle of the base 1, and the middle of the middle connecting plate 21 is rotatably connected On the central rotating shaft 3, the roller frame 2 can rotate relative to the base 1. In order to improve the stability of the roller frame 2 during rotation, casters 4 are connected to the lower left and right sides of the side connecting plate 22, and a circular track 5 is also fixedly connected to the base 1, wherein the casters 4 are located in the circular track 5. The casters 4 are used to roll along the circular track 5 when the roller frame 2 rotates around the central rotating shaft 3. The roller frame 2 introduces the circular track 5 and the matching casters 4 on the basis of the central rotating shaft 3 to form a stable rotating base, thereby significantly reducing the shaking during the rotation process and improving the overall stability and carrying capacity. In addition, the utility model is also provided with a rotation drive mechanism on the roller frame 2 for driving the roller frame 2 to rotate around the central rotating shaft 3.

[0027] In the present invention, a first positioning device 61 and a second positioning device 62 are provided in the circular track 5. The first positioning device 61 and the second positioning device 62 are both used to position the caster 4. When the roller frame 2 is driven by the rotation drive mechanism, the rotation drive mechanism stops working when it reaches the specified position, but the roller frame 2 may continue to rotate a little distance due to inertia, so it is possible to deviate from the precise position to be rotated. In addition, when the roller frame 2 is in use, it generally rotates back and forth between two angular positions to continuously change the direction of the conveyed material and convey it to the conveying mechanism in other directions. Therefore, the present invention provides a first positioning device 61 and a second positioning device 62 in the circular track 5. Through the first positioning device 61 and the second positioning device 62, when the roller frame 2 rotates back and forth between the two positions, it can be accurately aligned with the position where the rotation stops, and it is not easy to deviate from the position due to inertia. Of course, if the roller frame 2 needs to be positioned at three positions, a third positioning device can also be added.

[0028] Since the roller frame 2 generally rotates back and forth 90 degrees, when a conveying mechanism delivers the conveyed material to the roller 23 on the roller frame 2, the roller frame 2 rotates 90 degrees to deliver the material to another conveying mechanism, thereby achieving the purpose of changing the transmission direction of the conveyed material. Therefore, in this embodiment, the first positioning device 61 and the second positioning device 62 are on the same plane and are arranged vertically, that is, the angle between the first positioning device 61 and the second positioning device 62 is 90 degrees, wherein the first positioning device 61 and the second positioning device 62 both include positioning components corresponding to each caster 4, that is, the first positioning device 61 and the second positioning device 62 each include four positioning components.

[0029] Specifically, the positioning assembly includes a positioning seat 63, an assembly box 64 and an elastic assembly 65, wherein the annular track 5 is provided with an installation opening 51 corresponding to each positioning assembly, the assembly box 64 is fixedly connected below the installation opening 51 of the annular track 5, and the positioning seat 63 is slidably fitted in the assembly box 64, the elastic assembly 65 is located between the bottom of the assembly box 64 and the positioning seat 63, the elastic assembly 65 is a spring for pushing the positioning seat 63 upward, and the installation opening 51 is used for exposing the upper side of the positioning seat 63, and a U-shaped positioning opening 66 is provided on the upper end surface of the positioning seat 63, and The positioning seat 63 is provided with arc-shaped peaks 67 on both sides of the U-shaped positioning opening 66. When the caster 4 reaches the position of the positioning seat 63, the positioning seat 63 can be pressed downward. When the caster 4 reaches the U-shaped positioning opening 66, the positioning seat 63 can bounce up and stick to the caster 4. If the rotary drive mechanism stops rotating at this time, the caster 4 will not be able to go out of the U-shaped positioning opening 66, so the roller frame 2 can be prevented from continuing to rotate due to inertia. When the rotary drive mechanism drives the roller frame 2 to rotate, the caster 4 can continue to press down the positioning seat 63 and roll along the annular track 5 again.

[0030] When the rotary drive mechanism drives the roller frame 2 to rotate back and forth 90 degrees, for example, the initial position of the roller frame 2 is when each caster 4 is located in the U-shaped positioning hole 66 of the positioning seat 63 of each positioning component of the first positioning device 61, when the conveyed material reaches the roller 23 of the roller frame 2, the rotary drive mechanism drives the roller frame 2 to rotate relative to the base 1, and stops after rotating 90 degrees. At this time, each caster 4 just reaches the U-shaped positioning hole 66 of the positioning seat 63 of each positioning component corresponding to the second positioning device 62. At this time, there is no power from the rotary drive mechanism, and the inertia of the roller frame 2 cannot drive the caster 4 to cross the U-shaped positioning hole 66, so this structure plays a role of precise positioning. When the conveyed material leaves the roller frame 2, the rotary drive mechanism drives the roller frame 2 to rotate 90 degrees in the opposite direction to return to the initial position, and each caster 4 just reaches the U-shaped positioning hole 66 of the positioning seat 63 of each positioning component corresponding to the first positioning device 61.

[0031] In the present utility model, the rotation drive mechanism specifically includes a motor 71, a reducer 72, a driving wheel 73, a first driven wheel 74, a second driven wheel 75 and a transmission belt 76. The reducer 72 is fixed on the roller frame 2, the motor 71 is connected to the reducer 72, and a mounting plate 77 is fixedly connected to the housing of the reducer 72. The first driven wheel 74 and the second driven wheel 75 are rotatably connected to the mounting plate 77 and close to the outer wall of the annular track 5. The output shaft of the reducer 72 penetrates the mounting plate 77 and is fixedly connected to the driving wheel 73. The transmission belt 76 is fitted on the driving wheel 73, the first driven wheel 74 and the second driven wheel 75. The transmission belt 76 is in contact with the outer wall of the annular track 5. When the motor 71 drives the driving wheel 73 to rotate through the reducer 72, the driving wheel 73 drives the transmission belt 76 to transmit on the driving wheel 73, the first driven wheel 74 and the second driven wheel 75. The transmission belt 76 drives the roller frame 2 to rotate along the outer wall of the annular track 5 through the friction force with the outer wall of the annular track 5.

[0032] In addition, a fixing foot 8 is fixedly connected to the lower side of the annular track 5 , and the fixing foot 8 is used to be fixed on other fixing frames or workbenches to keep the base 1 and the annular track 5 fixed.

[0033] It should also be pointed out that the terms indicated in the present invention, such as: "front", "rear", "vertical", "horizontal", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as limiting the scope of protection of the present invention.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A stable roller conveyor, comprising a base and a roller frame, wherein a plurality of rollers are rotatably mounted on the roller frame, and the base is located below the roller frame, and is characterized in that: The lower side of the roller frame is fixedly connected with a middle connecting plate and a side connecting plate, the middle connecting plate is located in the middle of the roller frame, and two side connecting plates are provided and are respectively located at the front and rear positions of the roller frame. The middle part of the base is connected with a central rotating shaft, and the middle part of the middle connecting plate is rotatably connected to the central rotating shaft. Casters are connected to the lower left and right sides of the side connecting plates, and a circular track is fixedly connected to the base. The casters are located in the circular track, and the casters are used to roll along the circular track when the roller frame rotates around the central rotating shaft. The roller frame is provided with a rotating drive mechanism for driving the roller frame to rotate around the central rotating shaft.

2. A stable roller conveyor according to claim 1, characterized in that: A first positioning device and a second positioning device are provided in the annular track, and both the first positioning device and the second positioning device are used to position the casters.

3. A stable roller conveyor according to claim 2, characterized in that: The first positioning device and the second positioning device are on the same plane and are arranged vertically. The first positioning device and the second positioning device both include positioning components arranged corresponding to each caster.

4. A stable roller conveyor according to claim 3, characterized in that: The positioning assembly includes a positioning seat, an assembly box and an elastic assembly. The annular track is provided with mounting openings corresponding to each positioning assembly. The assembly box is fixedly connected below the mounting opening of the annular track. The positioning seat is slidably fitted in the assembly box. The elastic assembly is located between the bottom of the assembly box and the positioning seat. The mounting opening is used to expose the upper side of the positioning seat. The upper end surface of the positioning seat has a U-shaped positioning opening.

5. A stable roller conveyor according to claim 4, characterized in that: The positioning seat is provided with arc-surface convex peaks on both sides of the U-shaped positioning opening.

6. The stability roller conveyor according to claim 1, characterized in that: The rotary drive mechanism includes a motor, a reducer, a driving wheel, a first driven wheel, a second driven wheel and a transmission belt. The reducer is fixed on the roller frame, the motor is connected to the reducer, and a mounting plate is fixedly connected to the housing of the reducer. The first driven wheel and the second driven wheel are rotatably connected to the mounting plate and are close to the outer wall of the annular track. The output shaft of the reducer penetrates the mounting plate and is fixedly connected to the driving wheel. The transmission belt is fitted on the driving wheel, the first driven wheel and the second driven wheel, and the transmission belt is in contact with the outer wall of the annular track.

7. The stability roller conveyor according to claim 1, characterized in that: A fixing foot is fixedly connected to the lower side of the annular track.

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