Calibrating device and batching scale system

Abstract

This utility model relates to the field of weighing devices, and discloses a calibration device and a batching scale system. The calibration device includes: a scale body; a weight assembly, with at least a portion of the scale body positioned above the weight assembly, the weight assembly comprising multiple layers of weights stacked vertically, the layers of weights connected by connectors, the connectors being configured to allow adjacent layers of weights to move relative to each other vertically within a defined height difference, so that the upper layer of weights is either in a supported state supported on the lower layer of weights or in a suspended state detached from the lower layer of weights; and a drive unit, disposed on the scale body, the output end of the drive unit being connected to the uppermost weights to selectively suspend one or more upper weights by driving the uppermost weights to different heights, thereby adjusting the counterweight of the scale body. The weights are suspended sequentially from top to bottom for automated multi-level calibration, making it more convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of weighing devices, specifically to a calibration device and a batching scale system. Background Technology

[0002] In industrial production processes, weighing devices are frequently used to weigh materials. Taking the batching scale of a concrete mixing plant as an example, the batching scale needs to be calibrated for the first use and for subsequent uses after a period of time to ensure measurement accuracy.

[0003] Currently, the main method for calibrating batching scales is to manually move the weights onto the weight rack connected to the scale, and then manually remove them after calibration. In a few cases, the weights are connected via a cylinder. When calibration is needed, the cylinder pulls up the weights, and the control system compares the weight of the lifted weights with the control system reading to determine the measurement accuracy. However, this method can only perform single-value calibration. When different weights are required for calibration, it is necessary to manually change the weights, which is time-consuming and labor-intensive. Utility Model Content

[0004] The purpose of this invention is to overcome the problem that existing technologies can only perform single-value calibration, and when different weights are required for calibration, it is necessary to manually change the weights, which is time-consuming and labor-intensive.

[0005] To achieve the above objectives, this utility model provides a scale calibration device, comprising: a scale body;

[0006] A weight assembly, with at least a portion of the scale body disposed above the weight assembly, the weight assembly comprising multiple layers of weights stacked vertically, the layers of weights connected by connectors, the connectors being configured to allow relative vertical movement of adjacent layers of weights within a defined height difference, such that an upper layer of weight is in a supported state supported on its lower layer of weights or in a suspended state detached from its lower layer of weights; and...

[0007] A drive unit is located on the scale body and connected to the topmost weight unit. It can selectively lift one or more weight units located on the upper layer by driving the topmost weight unit to raise it to different heights, thereby adjusting the counterweight of the scale body.

[0008] In some embodiments, the connector includes a connecting rod disposed on the side of each layer of weights and a connecting plate disposed vertically at the junction of adjacent layers of weights. The connecting plate has a through hole along the height direction. The connecting rod on the adjacent layer of weights protrudes out of the connecting plate through the through hole and can move vertically in the through hole when the relative position between the adjacent layers of weights changes.

[0009] In some embodiments, the upper end of the through hole is fixedly connected to a connecting rod on the upper weight component, and the connecting rod on the lower weight component is movable within the through hole.

[0010] In some embodiments, the connecting rod includes a rod body and a rod head disposed at the outer end of the rod body, the rod head being larger than the through hole to prevent the connecting rod from coming out of the through hole.

[0011] In some embodiments, the rod body is smaller than the width of the through hole and has a gap with the sidewall of the through hole.

[0012] In some embodiments, a flexible connecting rope connects the output end of the drive unit to the uppermost weight unit.

[0013] In some embodiments, the calibration device further includes a support frame that is supported below the weight assembly.

[0014] The second aspect of this utility model provides a batching scale system, which includes the above-mentioned calibration device.

[0015] In some embodiments, the batching scale system further includes a storage hopper, with the scale body located below the storage hopper and connected to the storage hopper via a lifting rod.

[0016] In some embodiments, the scale body includes a weighing sensor and a weighing container, the weighing container being disposed below the storage hopper, and the weighing sensor being disposed between the weighing container and the boom to be able to measure the weight of the weighing container and its contents.

[0017] Through the above technical solution, this utility model sets the weight assembly to be stacked in multiple layers, with each layer of weights connected by connectors, and the driving component drives the top layer of weights to be lifted to different heights. Each layer of weights is lifted in sequence from top to bottom, so that the scale body obtains different weights for automatic multi-level calibration, making it more convenient to use. Attached Figure Description

[0018] Figure 1 This is an overall diagram of the batching scale system according to an embodiment of the present invention, wherein the weight assembly is not lifted;

[0019] Figure 2 This is an overall diagram of the batching scale system according to an embodiment of the present invention, in which all the weight components are suspended;

[0020] Figure 3 This is a structural diagram of the weight assembly in an embodiment of the present invention, showing that it is not lifted.

[0021] Figure 4 This is a structural diagram showing the entire weight assembly of this utility model embodiment being lifted.

[0022] Figure 5 This is a top view of the weight assembly according to an embodiment of the present invention;

[0023] Figure 6This is a front view of the connector in an embodiment of this utility model.

[0024] Explanation of reference numerals in the attached figures

[0025] 1. Scale body; 11. Weighing sensor; 12. Weighing container; 2. Drive component; 3. Weight assembly; 31. Weight component; 32. Connecting component; 321. Connecting rod; 3211. Rod body; 3212. Rod head; 322. Connecting plate; 3221. Through hole; 4. Flexible connecting rope; 5. Support frame; 6. Storage hopper; 7. Lifting rod. Detailed Implementation

[0026] In this invention, unless otherwise stated, directional terms such as "up," "down," "left," "right," "inner," and "outer" are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0027] To address the problem that existing calibration devices can only perform single-value calibrations, requiring manual replacement of weights for calibrations of different weights, which is time-consuming and labor-intensive, this invention provides a calibration device, such as... Figure 1 and Figure 2 As shown, the calibration device includes: a scale body 1, which is the object to be calibrated; and a weight assembly 3. The scale body 1 is at least partially located above the weight assembly 3. The weight assembly 3 includes multiple layers of weights 31 stacked vertically. Each weight 31 can be a single weight of various shapes or a combination of multiple weights. The layers of weights 31 are connected by connectors 32. The connectors 32 are configured to allow adjacent layers of weights 31 to move relative to each other vertically within a limited height difference. If the height difference exceeds the limit, the adjacent layers... The weight components 31 move synchronously, so that the upper weight component 31 is in a supported state supported on the lower weight component 31 or in a suspended state detached from the lower weight component 31; and the drive component 2 is provided on the scale body 1 and connected to the uppermost weight component 31. By driving the uppermost weight component 31 to rise to different heights, one or more weight components 31 located on the upper layer are selectively suspended to adjust the counterweight of the scale body 1, so that the scale body 1 can be calibrated in multiple stages without the need for manual replacement of calibration weights of different weights. The scale body 1 can be entirely located above the weight assembly 3, or only partially located above the weight assembly 3, as long as there is a height difference between the part of the scale body 1 where the drive component 2 is installed and the weight assembly 3, the drive component 2 can use the height difference to lift the weight assembly 3.

[0028] Through the above technical solution, this utility model sets the weight assembly 3 as a multi-layer stack, with each layer of weight 31 connected by a connector 32, and the driving component 2 drives the top layer of weight 31 to be lifted to different heights. Each layer of weight 31 is lifted in sequence from top to bottom, so that the scale body 1 obtains different weights for automatic multi-level calibration. There is no need to manually change the calibration weights of different weights, making it more convenient to use.

[0029] The driving component 2 can be an electric cylinder as in the prior art. The push rod of the electric cylinder is connected to the uppermost weight component 31. By precisely controlling the extension and retraction length of the electric cylinder push rod, the number of weight components 31 lifted can be controlled. The calibration device can also be equipped with a control system. The control system controls the extension and retraction length of the electric cylinder push rod and compares the weight of the lifted weight component with the displayed value of the scale to determine the accuracy of the weighing. As other alternative implementations, the driving component 2 can also be a winch device with limit switches or encoders, or other devices that can control the displacement distance.

[0030] In some embodiments, such as Figure 3 , Figure 4 and Figure 5 As shown, the connecting member 32 includes connecting rods 321 disposed on the sides of each layer of weights 31 and connecting plates 322 vertically disposed at the junction of adjacent layers of weights 31. The connecting plate 322 has a through hole 3221 along the height direction. The connecting rods 321 on the adjacent layers of weights 31 pass through the through hole 3221 and protrude from the connecting plate 322. When the relative position between the adjacent layers of weights 31 changes, the connecting rods 321 move vertically in the through hole 3221. Thus, when the connecting rods 321 on the adjacent layers of weights 31 are located at the top and bottom of the through hole 3221 respectively, the distance between the adjacent layers of weights 31 is the largest. At this time, the height difference between the adjacent layers of weights 31 is a limited height difference. When the driving member 2 drives the upper layer of weights 31 to continue moving upward, the weights 31 below it move synchronously with the upper layer of weights 31. It is understandable that the connector 32 can also be a flexible connector such as a chain or braided rope, but this may cause the weight 31 to sway after being lifted, resulting in inaccurate calibration or requiring waiting for the weight to come to rest before calibration, which takes a long time. Therefore, in order to avoid the weight 31 swaying after being lifted as much as possible, the connector is preferably a connecting plate and a connecting rod.

[0031] In some embodiments, the upper end of the through hole 3221 is fixedly connected to the connecting rod 321 on the upper weight component 31, and the connecting rod 321 on the lower weight component 31 can move within the through hole 3221. During the upward movement of the upper weight component 31 relative to the lower weight component 31, the connecting rod 321 and the connecting plate 322 on the upper weight component 31 move upward, while the lower weight component 31 remains stationary, and its connecting rod 321 slides within the through hole 3221 until the connecting rod 321 on the lower weight component 31 abuts against the lower end of the through hole 3221. Alternatively, the lower end of the through hole 3221 can be fixedly connected to the connecting rod 321 on the lower weight component 31, and the connecting rod 321 on the upper weight component 31 can move within the through hole 3221.

[0032] In some embodiments, the connecting rod 321 includes a rod body 3211 and a rod head 3212 disposed at the outer end of the rod body 3211. The rod head 3212 is larger than the through hole 3221 to prevent the connecting rod 321 from coming out of the through hole 3221. Figures 3 to 6 As shown, the connecting rod 321 is a bolt, and the size of the bolt head is larger than the size of the through hole 3221.

[0033] In some embodiments, such as Figure 6 As shown, the dimension of the rod 3211 is smaller than the width of the through hole 3221, and a gap is formed between the rod and the side wall of the through hole 3221. Therefore, the connecting rod 321 does not contact the side wall of the through hole 3221 during its sliding motion within the through hole 3221, avoiding friction between the connecting rod 321 and the connecting plate 322, which could lead to inaccurate weight distribution on the scale body 1 and affect the accuracy of calibration.

[0034] In some embodiments, such as Figure 1 and Figure 2 As shown, a flexible connecting rope 4 connects the output end of the drive unit 2 to the uppermost weight unit 31, suspending the weight unit 31 via the flexible connecting rope 4. The flexible connecting rope 4 can be a chain or a braided rope, etc. The flexible material allows the flexible connecting rope 4 to automatically extend and retract according to the different driving heights of the drive unit 2, thus suspending the weight unit 31.

[0035] In some embodiments, such as Figure 1 and Figure 2 As shown, the calibration device also includes a support frame 5, which is supported below the weight assembly 3.

[0036] This utility model also provides a batching scale system, such as Figure 1 and Figure 2 As shown, the batching scale system includes the above-mentioned calibration device, and the scale body 1 is the batching scale used in the batching scale system.

[0037] In some embodiments, the batching scale system further includes a storage hopper 6, with the scale body 1 located below the storage hopper 6 and connected to the storage hopper 6 via a lifting rod 7.

[0038] In some embodiments, the scale body 1 includes a weighing sensor 11 and a weighing container 12. The weighing sensor 11 is disposed between the weighing container 12 and the lifting rod 7. The weighing container 12 is capable of receiving the material in the storage hopper 6. The weighing sensor 11 is used to measure the weight of the weighing container 12 and its contents.

[0039] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings; however, the present invention is not limited thereto. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, including combinations of various specific technical features in any suitable manner. To avoid unnecessary repetition, the present invention will not describe the various possible combinations separately. However, these simple modifications and combinations should also be considered as the content disclosed in the present invention and are all within the protection scope of the present invention.

Claims

1. A scale calibration device, characterized in that, include: Scale body (1); The weight assembly (3) includes a scale body (1) at least partially disposed above the weight assembly (3). The weight assembly (3) comprises multiple layers of weights (31) stacked vertically. Each layer of weights (31) is connected to the others by a connector (32). The connector (32) is configured to allow adjacent layers of weights (31) to move relative to each other vertically within a defined height difference, such that the upper layer of weights (31) is in a supported state supported on the lower layer of weights (31) or in a suspended state detached from the lower layer of weights (31). A drive unit (2) is provided on the scale body (1) and connected to the uppermost weight unit (31) so as to selectively lift one or more of the uppermost weight units (31) by driving the uppermost weight unit (31) to rise to different heights.

2. The calibration device according to claim 1, characterized in that, The connector (32) includes a connecting rod (321) disposed on the side of each layer of weight (31) and a connecting plate (322) vertically disposed at the junction of adjacent layers of weight (31). The connecting plate (322) is provided with a through hole (3221) along the height direction. The connecting rod (321) on the adjacent layer of weight (31) passes through the through hole (3221) and protrudes out of the connecting plate (322), and can move vertically in the through hole (3221) when the relative position between adjacent layers of weight (31) changes.

3. The calibration device according to claim 2, characterized in that, The upper end of the through hole (3221) is fixedly connected to the connecting rod (321) on the upper weight component (31), and the connecting rod (321) on the lower weight component (31) can move in the through hole (3221).

4. The calibration device according to claim 2, characterized in that, The connecting rod (321) includes a rod body (3211) and a rod head (3212) located at the outer end of the rod body (3211). The rod head (3212) is larger than the through hole (3221) to prevent the connecting rod (321) from coming out of the through hole (3221).

5. The calibration device according to claim 4, characterized in that, The rod (3211) is smaller than the width of the through hole (3221) and has a gap with the sidewall of the through hole (3221).

6. The calibration device according to claim 1, characterized in that, A flexible connecting rope (4) is connected between the output end of the driving component (2) and the uppermost weight component (31).

7. The calibration device according to claim 1, characterized in that, The calibration device also includes a support frame (5), which is supported below the weight assembly (3).

8. A batching scale system, characterized in that, The batching scale system includes a calibration device according to any one of claims 1-7.

9. The batching scale system according to claim 8, characterized in that, The batching scale system also includes a storage hopper (6), and the scale body (1) is located below the storage hopper (6) and is connected to the storage hopper (6) by a lifting rod (7).

10. The batching scale system according to claim 9, characterized in that, The scale body (1) includes a weighing sensor (11) and a weighing container (12), with the weighing sensor (11) located between the weighing container (12) and the boom (7).

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