Flexible transmission device and method for improving dynamic weighing accuracy

Abstract

The application discloses a flexible transmission device and method for improving dynamic weighing precision, and belongs to the technical field of dynamic weighing, which comprises a wire rope and a wire rope fixing column, the wire rope fixing column comprises a material box wire rope fixing column and a push plate wire rope fixing column, the push plate wire rope fixing column is fixedly connected to one side surface of a material box push plate, and the material box wire rope fixing column is fixedly connected to the outer side surface of the material box; a hole is arranged at the end of the material box push plate away from the push plate wire rope fixing column, and the end of the material box wire rope fixing column away from the material box penetrates through the hole; one end of the wire rope is fixed to the push plate wire rope fixing column, and the other end of the wire rope is fixed to the material box wire rope fixing column. The application solves the problem that the existing dynamic weighing method based on a tray causes the vibration of a conveying component to be transmitted to the tray during the weighing process due to rigid connection, thereby affecting the final weighing precision, and improves the precision of the dynamic weighing based on the tray.

Description

Technical Field

[0001] This invention relates to the field of dynamic weighing technology, and in particular to a flexible transmission device and method for improving the accuracy of dynamic weighing. Background Technology

[0002] The statements in this section are merely background information related to the present invention and do not necessarily constitute prior art.

[0003] In actual production, many scenarios require the rapid and accurate acquisition of the weight of a target object while it is in motion, and then use this weight as a basis for sorting, determining qualification, and so on. Currently, for materials that can be conveyed independently, high-precision weighing can be achieved using mature belt scale technology. However, some materials cannot be directly conveyed by belts and require pallet-based transport. Pallets often obtain power by being attached to transmission components such as chains and belts. During power transmission, the vibration of the transmission components is also transmitted to the pallet, thus affecting the final weighing accuracy.

[0004] Patent CN113479567A describes a roller conveyor device for sorting fruits and vegetables, including a chain assembly and a conveyor unit. Fruits and vegetables are placed on the conveyor unit, and after passing through a weighing area, they can be weighed. In this patent, the conveyor unit is pushed forward by a pusher plate on the chain assembly. The pusher plate and the conveyor unit are always in rigid contact, and vibrations are directly transmitted from the pusher plate to the conveyor unit, resulting in low weighing accuracy. Summary of the Invention

[0005] To address the aforementioned problems, this invention proposes a flexible transmission device and method to improve the accuracy of dynamic weighing. During dynamic weighing, flexible transmission replaces the traditional rigid connection transmission, reducing vibration during power transmission and improving the accuracy of dynamic weighing.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] In a first aspect, the present invention provides a flexible transmission device for improving dynamic weighing accuracy, comprising a rope and a rope fixing post, wherein the rope fixing post includes a material box rope fixing post and a push plate rope fixing post, the push plate rope fixing post is fixedly connected to one side of the material box push plate, and the material box rope fixing post is fixedly connected to the outer side of the material box.

[0008] The end of the material box push plate away from the push plate rope fixing post has a hole, and the end of the material box rope fixing post away from the material box passes through the hole;

[0009] One end of the rope is fixed to the push plate rope fixing post, and the other end is fixed to the material box rope fixing post.

[0010] As a further implementation, the inner diameter of the hole is larger than the outer diameter of the material box rope fixing post.

[0011] As a further implementation, the center of the hole and the vertical section of the push plate rope fixing column are located on the same horizontal line.

[0012] As a further implementation, the length of the rope between the material box rope fixing post and the push plate rope fixing post is greater than the distance from the nearest point of the hole to the push plate rope fixing post, and less than the distance from the farthest point of the hole to the push plate rope fixing post.

[0013] As a further implementation, the bottom of the material box push plate is fixedly connected to the conveying device, and the material box is suspended above the conveying device by the support of the material box rope fixing post and the holes on the material box push plate.

[0014] As a further implementation, the push plate rope fixing post is located at the front end of the material box push plate along the direction of movement of the conveying device.

[0015] As a further implementation, there are two push plates for the material box, located on both sides of the material box along the direction of movement.

[0016] As a further implementation, the push plate cord fixing post is fixedly connected to the outer side of the material box push plate away from the material box.

[0017] As a further implementation, the material to be weighed is placed on top of the hopper, and multiple weighing support points are provided at its bottom.

[0018] In a second aspect, the present invention provides a flexible transmission method for improving dynamic weighing accuracy. The method utilizes a flexible transmission device for improving dynamic weighing accuracy, in which material box rope fixing posts fixed on the outer surfaces of both sides of the material box are arranged into holes in the material box push plate. The material box is suspended above the conveying device by the support of the material box rope fixing posts and the holes in the material box push plate. The material box and the material box push plate move together with the conveying device below.

[0019] When the material box does not pass through the weighing area, the material box rope fixing post falls onto the hole of the material box push plate by gravity, and the rope between the material box rope fixing post and the push plate rope fixing post is in a slack state.

[0020] When the material box passes through the weighing area, the weighing support point rises under the support of the weighing platform, and the position of the material box rope fixing post also rises, reaching the middle position of the hole on the material box push plate. The material box and the material box push plate are only connected by rope, and there is no contact at other positions.

[0021] By reading the data from the weighing sensor, the weight of the material box can be obtained relatively accurately. Subtracting the initial weight of the material box will give you the weight of the material.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] This invention provides a flexible transmission device and method for improving dynamic weighing accuracy. During dynamic weighing, transmission is achieved via a rope connecting the material box rope fixing post and the push plate rope fixing post. This flexible transmission replaces the traditional rigid connection transmission. The material box and the conveying device are connected only by the rope, with no other contact points, greatly eliminating vibration during transmission and improving the accuracy of pallet-based dynamic weighing. This solves the problem in existing pallet-based dynamic weighing methods where rigid connections cause vibrations from the conveying components to be transmitted to the pallet, thus affecting the final weighing accuracy. Attached Figure Description

[0024] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0025] Figure 1 This is a schematic diagram of the overall structure of the flexible transmission device of the present invention;

[0026] Figure 2 This is a schematic diagram of the material box of the present invention.

[0027] Among them, 1. Material box; 2. Material box rope fixing post; 3. Weighing support point; 4. Material; 5. Material box push plate; 6. Push plate rope fixing post; 7. Rope; 8. Weighing platform; 9. Hole. Detailed implementation method:

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0029] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0030] Where there is no conflict, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0031] Example 1

[0032] like Figure 1-2 As shown, this embodiment provides a flexible transmission device for improving dynamic weighing accuracy, including a rope 7 and a rope fixing post. The rope fixing post includes a material box rope fixing post 2 and a push plate rope fixing post 6. One end of the transmission rope is fixed to the push plate rope fixing post 6, and the other end is fixed to the material box rope fixing post 2.

[0033] The push plate cord fixing post 6 is fixedly connected to one side of the material box push plate 5. The bottom of the material box push plate 5 is fixedly connected to the conveying device. The material box cord fixing post 2 is fixedly connected to the outer side of the material box 1. The end of the material box push plate 5 away from the push plate cord fixing post 6 is provided with a hole 9. The end of the material box cord fixing post 2 away from the material box 2 passes through the hole 9 and is placed inside the hole 9.

[0034] The inner diameter of the hole 9 is larger than the outer diameter of the material box rope fixing post 2. Only then can the material box rope fixing post 2 move within the hole 9 on the material box push plate 5, achieving flexible transmission.

[0035] In this embodiment, there are two material box push plates 5, located on both sides of the material box 1 along the direction of movement, so that the material box rope fixing posts 2 fixed on both sides of the material box 1 can pass through the holes 9 on the material box push plates 5 on both sides respectively.

[0036] When not passing through the weighing area, the material box rope fixing posts 2 on both sides of the material box 1 fall onto the holes 9 of the material box push plate 5 by gravity. The material box 1 is suspended above the conveying device by the support of the material box rope fixing posts 2 and the holes 9 on the material box push plate 5. At this time, since the length of the rope 7 between the material box rope fixing posts 2 and the push plate rope fixing posts 6 is greater than the distance between the material box rope fixing posts 2 and the push plate rope fixing posts 6, the rope 7 between the material box rope fixing posts 2 and the push plate rope fixing posts 6 is in a slack state.

[0037] In this embodiment, the centers of the vertical sections of the hole 9 and the push plate rope fixing post 6 are preferably located on the same horizontal line. The length of the rope 7 between the material box rope fixing post 2 and the push plate rope fixing post 6 is greater than the distance from the nearest point of the hole 9 to the push plate rope fixing post 6, and less than the distance from the farthest point of the hole 9 to the push plate rope fixing post 6. In other embodiments, the centers of the vertical sections of the hole 9 and the push plate rope fixing post 6 may not be on the same horizontal line. In this case, the length of the rope 7 between the material box rope fixing post 2 and the push plate rope fixing post 6 must satisfy a certain quantitative relationship with the distance between the hole 9 and the push plate rope fixing post 6 in order to achieve flexible transmission.

[0038] The push plate rope fixing post 6 is located at the front end of the material box push plate 5 along the direction of movement of the conveying device. The material 4 to be weighed is placed on the top of the material box 1, and multiple weighing support points 3 are provided at its bottom. With this design, when the material box 1 passes through the weighing area, the weighing support points 3 at the bottom of the material box 1 are raised under the support of the weighing platform 8, and the position of the material box rope fixing post 2 is also raised, reaching the middle position of the hole 9 on the material box push plate 5. The material box 1 and the material box push plate 5 are connected only by rope 7. By pulling the material box rope fixing post 2 through the push plate rope fixing post 6 located at the front end of the direction of movement of the material box push plate 5, the material box 1 continues to move forward under the tension of the rope 7. This will not affect the forward movement of the material box 1, nor will it transmit the vibration of the conveying device to the material box 1 being weighed, thereby improving the accuracy of dynamic flexible weighing.

[0039] The push plate cord fixing post 6 can be located on the inner side of the material box push plate 5 or on the outer side of the material box push plate 5. When the push plate cord fixing post 6 is located on the inner side of the material box push plate 5, the push plate cord fixing post 6 is shorter than the material box cord fixing post 2. The push plate cord fixing post 6 cannot contact the material box 1 and the material box cord fixing post 2 must be able to pass through the hole 9 on the material box push plate 5. In this embodiment, the push plate cord fixing post 6 is preferably fixedly connected to the outer side of the material box push plate 5 away from the material box 1.

[0040] Example 2

[0041] This embodiment provides a flexible transmission method to improve dynamic weighing accuracy. Using a flexible transmission device to improve dynamic weighing accuracy according to Embodiment 1, the bottom of the material box push plate 5 is fixedly connected to the conveying device. The material box rope fixing posts 2, which are fixed on the outer surfaces of both sides of the material box 1, are arranged in the holes 9 of the material box push plate 5 located on both sides of the material box 1. The material box 1 is suspended above the conveying device by the support of the material box rope fixing posts 2 and the holes 9 on the material box push plate 5. The material box 1 and the material box push plate 5 move together with the conveying device below.

[0042] When the material box 1 does not pass through the weighing area, the material box rope fixing post 2 falls onto the hole 9 of the material box push plate 5 by gravity. At this time, since the length of the rope 7 between the material box rope fixing post 2 and the push plate rope fixing post 6 is greater than the distance between the material box rope fixing post 2 and the push plate rope fixing post 6, the rope 7 between the material box rope fixing post 2 and the push plate rope fixing post 6 is in a slack state.

[0043] When the material box 1 passes through the weighing area, the position of the weighing support point 3 rises under the support of the weighing platform 8, and the position of the material box rope fixing post 2 also rises with the material box 1, reaching the middle position of the hole 9 on the material box push plate 5. At this time, since the length of the rope 7 between the material box rope fixing post 2 and the push plate rope fixing post 6 is equal to the distance between the material box rope fixing post 2 and the push plate rope fixing post 6, the material box 1 and the material box push plate 5 are only connected by the rope 7, and there is no contact at other positions.

[0044] By reading the data from the weighing sensor, the weight of material box 1 can be obtained more accurately. Subtracting the initial weight of material box 1 will give the weight of material 4.

[0045] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

[0046] While the specific embodiments of the present invention have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solutions of the present invention are still within the scope of protection of the present invention.

Claims

1. A flexible transmission device for improving dynamic weighing accuracy, characterized in that, It includes a cord and cord fixing posts. The cord fixing posts include a material box cord fixing post and a push plate cord fixing post. The push plate cord fixing post is fixedly connected to one side of the material box push plate, and the material box cord fixing post is fixedly connected to the outer side of the material box. The material box push plate has a hole at one end away from the push plate rope fixing post, and the end of the material box rope fixing post away from the material box passes through the hole; the inner diameter of the hole is larger than the outer diameter of the material box rope fixing post. The bottom of the material box is provided with multiple weighing support points; One end of the cord is fixed to the push plate cord fixing post, and the other end is fixed to the material box cord fixing post; the length of the cord between the material box cord fixing post and the push plate cord fixing post is greater than the distance from the nearest point of the hole to the push plate cord fixing post, and less than the distance from the farthest point of the hole to the push plate cord fixing post.

2. The flexible transmission device for improving dynamic weighing accuracy as described in claim 1, characterized in that, The center of the hole and the center of the vertical section of the push plate rope fixing post are on the same horizontal line.

3. The flexible transmission device for improving dynamic weighing accuracy as described in claim 1, characterized in that, The bottom of the material box push plate is fixedly connected to the conveying device, and the material box is suspended above the conveying device by the support of the material box rope fixing column and the holes on the material box push plate.

4. The flexible transmission device for improving dynamic weighing accuracy as described in claim 3, characterized in that, The push plate rope fixing post is located at the front end of the material box push plate along the direction of movement of the conveying device.

5. The flexible transmission device for improving dynamic weighing accuracy as described in claim 1, characterized in that, There are two push plates for the material box, located on both sides of the material box along the direction of movement.

6. The flexible transmission device for improving dynamic weighing accuracy as described in claim 1, characterized in that, The push plate cord fixing post is fixedly connected to the outer side of the push plate of the material box away from the material box.

7. The flexible transmission device for improving dynamic weighing accuracy as described in claim 1, characterized in that, The material to be weighed is placed on top of the hopper.

8. A flexible transmission method for improving dynamic weighing accuracy, characterized in that, Using a flexible transmission device for improving dynamic weighing accuracy as described in any one of claims 1-7, the material box rope fixing posts fixed on the outer surfaces of both sides of the material box are arranged in the holes of the material box push plate. The material box is suspended above the conveying device by the support of the material box rope fixing posts and the holes on the material box push plate. The material box and the material box push plate move together with the conveying device below. When the material box does not pass through the weighing area, the material box rope fixing post falls onto the hole of the material box push plate by gravity, and the rope between the material box rope fixing post and the push plate rope fixing post is in a slack state. When the material box passes through the weighing area, the weighing support point rises under the support of the weighing platform, and the position of the material box rope fixing post also rises, reaching the middle position of the hole on the material box push plate. The material box and the material box push plate are only connected by rope, and there is no contact at other positions. By reading the data from the weighing sensor, the weight of the material box can be obtained relatively accurately. Subtracting the initial weight of the material box will give you the weight of the material.

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