Grid type conveying line on-line high-precision weighing device and on-line conveying equipment

Abstract

The utility model discloses a grating type conveying line on-line high-precision weighing device and on-line conveying equipment, the grating type conveying line on-line high-precision weighing device comprises a weighing module and an automatic scale calibration module, the weighing module comprises a jacking assembly, a weighing chassis, a weighing grating and a weighing device, the weighing grating is located above the weighing chassis and is connected with the weighing chassis through the weighing device, and the automatic scale calibration module is connected with the automatic scale calibration module. The jacking assembly is connected with the weighing chassis so as to drive the weighing chassis to drive the weighing grid to move up and down so as to lift or lower materials on the grid type conveying line, and the automatic scale calibration module is arranged to be capable of carrying out automatic scale calibration operation on the weighing device. During weighing, the second jacking device drives the weighing grid to move upwards so as to lift materials to the position above the conveying line, influences of material vibration, equipment abrasion and other factors are avoided, compared with dynamic weighing, the accuracy of weighing data obtained through a static weighing mode is higher, automatic scale calibration can be achieved through the automatic scale calibration module, manual weight carrying is not needed, and the production efficiency is improved. The automation degree is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to the weighing technical field especially, and relates to a grating type conveying line on -line high accuracy weighing device and on -line conveying equipment. BACKGROUND

[0002] In modern industrial production, the accurate measurement of materials is one of the key links to ensure product quality, control production cost and realize production automation. As an important means of material transmission, the conveying line (such as a roller conveyor and other grating type conveying mechanisms) has important significance in realizing on-line weighing of materials during its operation. However, the existing conveying line adopts a dynamic weighing method for weighing during material conveying, which is easily affected by factors such as material vibration on the conveying line and mechanical wear of the equipment, resulting in inaccurate weighing. Moreover, the previous calibration mode requires at least 2-3 people to complete the operation, including carrying the weight and calibration operation. Since the weight is too heavy, it is easy to cause injury or crush injury when carrying the weight, and there is a safety risk.

[0003] Therefore, there is an urgent need for a new grating type conveying line on-line high accuracy weighing device and on-line conveying equipment to solve the above technical problems. SUMMARY

[0004] The utility model aims at solving the above technical problems, that is, solving the problem of inaccurate weighing of the existing conveying line during material conveying, which adopts a dynamic weighing method, is easily affected by factors such as material vibration on the conveying line and mechanical wear of the equipment, and requires at least 2-3 people to complete the operation, including carrying the weight and calibration operation. Since the weight is too heavy, it is easy to cause injury or crush injury when carrying the weight, and there is a safety risk.

[0005] To this end, in the first aspect, the utility model provides a grating type conveying line on-line high accuracy weighing device, which comprises a weighing module and an automatic calibration module. The weighing module comprises a weighing chassis, a jacking assembly, a weighing grating and a weighing machine. The weighing grating is located above the weighing chassis and is connected with the weighing chassis through the weighing machine. The weighing machine is arranged to weigh the material placed on the weighing grating. The jacking assembly is connected with the weighing chassis to drive the weighing chassis to move up and down with the weighing grating to lift or lower the material on the grating type conveying line. The automatic calibration module is arranged to automatically calibrate the weighing machine.

[0006] In the specific embodiment of the online high-precision weighing device of the grid conveying line, the automatic scale calibration module comprises a weight, two support grooves and two first jacks, the two support grooves are respectively located at the two sides of the weighing grid and are fixedly connected with the weighing grid, a first jack fixedly connected with the weighing base is arranged below each support groove, the ejecting end of the first jack is connected with a jacking base, the bottom end of the support groove is provided with a jacking outlet through which the jacking base passes, the support groove is provided with the weight, the length of the weight is greater than the length of the jacking outlet, and the first jack can lift the weight out of the support groove during the driving of the jacking base.

[0007] In the specific embodiment of the online high-precision weighing device of the grid conveying line, at least two positioning clamping grooves are arranged on the outer circumferential wall of the weight and are distributed in parallel and at intervals, the jacking base is fixedly provided with positioning plug blocks in a number same as and corresponding to the positioning clamping grooves, and the positioning plug blocks can be inserted into the positioning clamping grooves to lift the weight up under the driving of the first jack.

[0008] In the specific embodiment of the online high-precision weighing device of the grid conveying line, a balance frame in a U-shaped structure is fixedly arranged at the front side and the rear side of the weighing grid respectively, and each support groove is fixedly connected with the end portions of the two adjacent balance frames.

[0009] In the specific embodiment of the online high-precision weighing device of the grid conveying line, the jacking assembly comprises a second jack and a fixed plate, at least one second jack is arranged at the two sides of the weighing base respectively, the second jack is fixedly connected with the weighing base to drive the weighing base to move up and down, and each second jack is fixed on a fixed plate.

[0010] In the specific embodiment of the online high-precision weighing device of the grid conveying line, the ejecting end of the second jack is fixedly connected with the weighing base through a connecting plate, and the first jack is fixed on the connecting plate.

[0011] In the specific embodiment of the online high-precision weighing device of the grid conveying line, the online high-precision weighing device of the grid conveying line further comprises a position detector for detecting whether the material on the grid conveying line reaches the position directly above the weighing grid.

[0012] In the specific embodiment of the online high-precision weighing device of the grid conveying line, the weighter comprises a fixed lower plate, a fixed upper plate and a strain pressure sensor, the strain pressure sensor is fixedly connected with the weighing base through the fixed lower plate, and the strain pressure sensor is fixedly connected with the bottom end of the weighing grid through the fixed upper plate.

[0013] Secondly, this utility model also provides a grid-type online conveying device, including a grid-type online conveying line and an online high-precision weighing device for the grid-type conveying line as described in any one of the first aspects.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This utility model separates the weighing module from the grid conveyor line. During weighing, the weighing grid is driven to move upward by the second lifting device, thereby lifting the material to the top of the conveyor line. The material is separated from the grid conveyor line and will not be affected by factors such as material vibration and equipment wear. Compared with dynamic weighing, the weighing data obtained by using this static weighing mode to weigh the material on the conveyor line is more accurate.

[0016] 2. To prevent inaccurate weighing due to prolonged use of the weighing instrument, this utility model incorporates an automatic calibration module. A first lifting device drives the lifting base upwards to lift the weights. By comparing the standard weight of the weights with the weight detected by the weighing instrument, the accuracy of the weighing can be determined, allowing staff to make timely adjustments. The entire calibration process eliminates the need for manual handling of weights, resulting in a high degree of automation. This not only reduces labor intensity and prevents worker injuries but also saves time and helps ensure product quality. Calibration can be performed during production based on production volume or when weight deviations are detected, making calibration faster and more convenient. Attached Figure Description

[0017] The preferred embodiments of this utility model are described below with reference to the accompanying drawings, in which:

[0018] Figure 1 This is a schematic diagram of the overall structure of the online high-precision weighing device for grid-type conveyor lines provided by this utility model;

[0019] Figure 2 yes Figure 1 The main view;

[0020] Figure 3 yes Figure 2 Cross-sectional view along the BB direction;

[0021] Figure 4 This is a schematic diagram of the structure of the weights and the lifting base working together;

[0022] Figure 5 This is a schematic diagram of the weights.

[0023] List of reference numerals in the attached diagram:

[0024] 1. Grating conveyor line; 2. Material; 3. Fixed plate; 4. Second lifter; 5. Weighing chassis; 6. Balance frame; 7. Position detector; 8. First lifter; 9. Lifting base; 10. Weight; 11. Weighing device; 1101. Fixed upper plate; 1102. Strain gauge pressure sensor; 1103. Fixed lower plate; 12. Weighing grating; 1201. Grating bar; 1202. Base plate; 13. Positioning block; 14. Positioning slot; 15. Connecting plate; 16. Support groove. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0026] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the system or component 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 utility model. Furthermore, the use of terms such as "first" and "second" to define components is merely for the convenience of distinguishing the aforementioned components. Unless otherwise stated, these terms have no special meaning and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "setting," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] This utility model relates to the field of weighing technology, and in particular to an online high-precision weighing device and online conveying equipment for a grid conveyor line. The purpose is to solve the problems of inaccurate weighing in existing conveyor lines using dynamic weighing methods during material transport, which are easily affected by factors such as material vibration on the conveyor line and mechanical wear of the equipment. Furthermore, the previous calibration method required at least 2-3 people to perform the work, including handling weights and performing the calibration operation. Because the weights are often too heavy, handling them could easily cause injury from falling or crushing, posing a safety risk. To address this issue, the utility model provides an online high-precision weighing device for a grid conveyor line, comprising a weighing module, a lifting component, and an automatic calibration module. The weighing module includes a weighing base, a weighing grid, and a weighing device. The weighing grid is located above the weighing base and connected to the weighing base via the weighing device. The weighing device is designed to weigh materials placed on the weighing grid. The lifting component is connected to the weighing base to drive the weighing base to move the weighing grid up and down to lift or lower materials on the grid conveyor line. The automatic calibration module is designed to automatically calibrate the weighing device. In the weighing operation, this utility model separates the weighing module from the grid conveyor line. During weighing, the second lifting device drives the weighing grid to move upward, thereby lifting the material above the conveyor line. The material is separated from the grid conveyor line and is not affected by factors such as material vibration and equipment wear. Compared with dynamic weighing, the weighing data obtained by using this static weighing mode to weigh the material on the conveyor line is more accurate. The automatic weighing module realizes automatic weighing, eliminating the need for manual handling of weights. It has a high degree of automation, which not only reduces labor intensity but also avoids injury to workers.

[0029] The following is a detailed description of the online high-precision weighing device and online conveying equipment for the grid-type conveyor line provided in the embodiments of this utility model, with reference to the accompanying drawings.

[0030] See Figures 1-3 This utility model provides an online high-precision weighing device for a grid conveyor line 1, including a weighing module and an automatic calibration module. The weighing module includes a weighing chassis 5, a lifting component, a weighing grid 12, and a weighing device 11. The weighing grid 12 is located above the weighing chassis 5 and is connected to the weighing chassis 5 through the weighing device 11. The weighing device 11 is configured to weigh the material 2 placed on the weighing grid 12. The lifting component is connected to the weighing chassis 5 to drive the weighing chassis 5 to move the weighing grid 12 up and down to lift or lower the material 2 on the grid conveyor line 1. The automatic calibration module is configured to automatically calibrate the weighing device 11. Figure 1 The grid conveyor line 1 in the text is a roller conveyor line.

[0031] Specifically, the weighing chassis 5 has a U-shaped structure, with the weighing device 11 fixed inside the weighing chassis 5 and the lifting assembly located outside the weighing chassis 5. The weighing device 11 includes a fixed lower plate 1103, a fixed upper plate 1101, and a strain gauge pressure sensor 1102. The strain gauge pressure sensor 1102 is fixedly connected to the weighing chassis 5 via the fixed lower plate 1103 and to the bottom end of the weighing grid 12 via the fixed upper plate 1101. The use of a high-precision strain gauge pressure sensor offers advantages such as high sensitivity, low linearity error, and good repeatability, enabling accurate detection of minute changes in material weight.

[0032] More specifically, the weighing grid 12 includes grid bars 1201 and a base plate 1202. The base plate 1202 is fixedly connected to the fixed upper plate 1101. Multiple grid bars 1201 arranged at equal intervals are fixed to the top of the base plate 1202. During upward movement, the grid bars 1201 can extend from the gaps in the grid conveyor line 1 to support the material 2. Figure 1 and Figure 3 As shown. Figure 1 In this process, the grid bar 1201 can extend from the gap between adjacent rollers to support the material 2.

[0033] In one embodiment, see Figures 1-2 The automatic weighing module includes a weight 10, two support slots 16, and two first lifters 8. The two support slots 16 are located on both sides of the weighing grid 12 and are fixedly connected to it. A first lifter 8 is fixedly connected to the weighing chassis 5 below each support slot 16. The top end of the first lifter 8 is connected to a lifting base 9. The bottom end of the support slot 16 is provided with a top outlet that allows the lifting base 9 to pass through. A weight 10 is placed in the support slot 16. The length of the weight 10 is greater than the length of the top outlet. When the first lifter 8 drives the lifting base 9 to rise, it can lift the weight 10 from the support slot 16.

[0034] Specifically, with Figure 1 With the center direction as the reference, a U-shaped balance frame 6 is fixed on the front and rear sides of the weighing grid 12, and each support groove 16 is fixedly connected to the ends of the two adjacent balance frames 6.

[0035] In the above embodiments, preferably, see [reference needed]. Figures 4-5 The outer peripheral wall of the weight 10 is provided with at least two positioning slots 14 arranged side by side at intervals. The lifting base 9 is fixed with a number of positioning blocks 13 that are the same as and correspond one-to-one with the positioning slots 14. Under the drive of the first lifting device 8, the positioning blocks 13 can move upward and insert into the positioning slots 14 to lift the weight 10.

[0036] In the above embodiment, a positioning slot 14 is provided on the weight 10, so that the positioning insert 13 can be inserted into the same part of the weight 10 each time the scale is calibrated, which helps to ensure the accuracy of the calibration. In addition, weights 10 and first lifting devices 8 are provided on both sides of the weighing grid 12 to ensure balance, which helps to ensure the accuracy of the calibration even when the weighing grid 12 is large.

[0037] During calibration, the first lifting device 8 drives the corresponding lifting base 9 to move upward. During this upward movement, it passes through the top outlet of the support groove 16 and contacts the weight 10. The positioning block 13 is inserted into the corresponding positioning slot 14, and the device continues to move upward, thus lifting the weight 10 from the support groove 16 until it reaches the designated position. After the weight 10 leaves the support groove 16, its weight acts on the lifting base 9. The first lifting device 8 transfers the weight to the balance frame 6, enabling the weighing instrument 11 to detect the weight of the weight 10. The first lifting devices 8 on both sides of the weighing grid 12 operate simultaneously to ensure consistency. By comparing the standard weight of the weight 10 with the weight detected by the weighing instrument 11, it can be determined whether the weighing by the weighing instrument 11 is accurate, allowing the staff to make timely adjustments. The entire calibration process does not require manual handling of the weight 10, resulting in a high degree of automation. This not only reduces labor intensity and avoids injury to staff, but also saves time and helps ensure product quality.

[0038] In one embodiment, the lifting assembly includes a second lifting device 4 and a fixing plate 3. At least one second lifting device 4 is respectively provided on both sides of the weighing chassis 5. The second lifting device 4 is fixedly connected to the weighing chassis 5 to drive it to move up and down. Each second lifting device 4 is fixed to a fixing plate 3. In actual use, the second lifting device 4 is fixed in a designated position by the fixing plate 3, which has connecting holes for fixing with screws. For example, as... Figure 1 As shown, there are two second lifting devices on both sides of the weighing chassis 5.

[0039] Specifically, the ejector end of the second lifting device 4 is fixedly connected to the weighing chassis 5 via a connecting plate 15, and the first lifting device 8 is fixed on the connecting plate 15. For example, both the first lifting device 8 and the second lifting device 4 can be cylinders.

[0040] In one embodiment, see Figures 1-2 The online high-precision weighing device of the grid conveyor line 1 also includes a position detector 7 for detecting whether the material 2 on the grid conveyor line 1 has reached directly above the weighing grid 12.

[0041] For example, the position detector 7 is a through-beam photoelectric sensor switch, including a photoelectric transmitter and a photoelectric receiver. The photoelectric transmitter is fixed on a connecting plate 15 on one side of the weighing grid 12, and the photoelectric receiver is fixed on a connecting plate 15 on the other side of the weighing grid 12. The photoelectric receiver is used to receive the photoelectric signal emitted by the photoelectric transmitter. When the material 2 is conveyed directly above the weighing grid 12, the material 2 blocks the photoelectric signal emitted by the photoelectric transmitter. The fact that the photoelectric receiver cannot receive the photoelectric signal indicates that the material 2 has reached the weighing position.

[0042] In the above embodiments, the weighing chassis 5, weighing grid 12, support groove 16, balance frame 6, and connecting plate 15 are all made of steel plate, which has good rigidity. The top surface of the fixed upper plate 1101, the top surface of the grid bar 1201, and the bottom surface of the fixed lower plate 1103 are all ground to ensure that they are always kept on a good plane.

[0043] In another embodiment, the present invention also provides a grid-type online conveying device, including a grid-type online conveying line and a grid-type online high-precision weighing device as described in any of the above embodiments.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.

Claims

1. A high-precision online weighing device for a grid-type conveyor line, characterized in that, The system includes a weighing module and an automatic calibration module. The weighing module includes a lifting assembly, a weighing chassis, a weighing grid, and a weighing device. The weighing grid is located above the weighing chassis and is connected to the weighing chassis via the weighing device. The weighing device is configured to weigh materials placed on the weighing grid. The lifting assembly is connected to the weighing chassis to drive the weighing chassis to move the weighing grid up and down to lift or lower materials on the grid conveyor line. The automatic calibration module is configured to automatically calibrate the weighing device.

2. The online high-precision weighing device for grid conveyor lines according to claim 1, characterized in that, The automatic weighing module includes a weight, two support slots, and two first lifters. The two support slots are located on both sides of the weighing grid and are fixedly connected to it. A first lifter is fixedly connected to the weighing chassis below each support slot. The top end of the first lifter is connected to a lifting base. The bottom end of the support slot has a top outlet that allows the lifting base to pass through. A weight is placed in the support slot. The length of the weight is greater than the length of the top outlet. When the first lifter drives the lifting base to rise, it can lift the weight from the support slot.

3. The online high-precision weighing device for grid conveyor lines according to claim 2, characterized in that, The outer peripheral wall of the weight is provided with at least two positioning slots arranged side by side at intervals. The lifting base is fixed with a number of positioning blocks that are the same as the number of positioning slots and correspond one-to-one. Under the drive of the first lifting device, the positioning blocks can move upward and insert into the positioning slots to lift the weight.

4. The online high-precision weighing device for grid conveyor lines according to claim 2, characterized in that, The weighing grid has a U-shaped balance frame fixed to its front and rear sides, and each support groove is fixedly connected to the ends of two adjacent balance frames.

5. The online high-precision weighing device for grid conveyor lines according to claim 2, characterized in that, The lifting assembly includes a second lifting device and a fixed plate. At least one second lifting device is provided on each side of the weighing chassis. The second lifting device is fixedly connected to the weighing chassis to drive it to move up and down. Each second lifting device is fixed on a fixed plate.

6. The online high-precision weighing device for grid conveyor lines according to claim 5, characterized in that, The protruding end of the second lifting device is fixedly connected to the weighing chassis via a connecting plate, and the first lifting device is fixed on the connecting plate.

7. The online high-precision weighing device for grid conveyor lines according to claim 1, characterized in that, The online high-precision weighing device for the grid conveyor also includes a position detector for detecting whether the material on the grid conveyor has reached directly above the weighing grid.

8. The online high-precision weighing device for grid conveyor lines according to claim 1, characterized in that, The weighing device includes a fixed lower plate, a fixed upper plate, and a strain gauge pressure sensor. The strain gauge pressure sensor is fixedly connected to the weighing chassis via the fixed lower plate, and the strain gauge pressure sensor is fixedly connected to the bottom end of the weighing grid via the fixed upper plate.

9. A grid-type online conveying device, characterized in that, It includes a grid-type online conveyor line and an online high-precision weighing device for the grid-type conveyor line as described in any one of claims 1-8.

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