High-precision electronic belt scale

Abstract

The utility model discloses a high-precision electronic belt scale, which comprises a weighing rack, the lower end of the weighing rack is provided with a bottom frame, the bottom frame comprises a lower bottom plate, the upper surface of the lower bottom plate is provided with a weighing sensor, and the upper surface of the weighing sensor is fixedly provided with a bearing groove; supporting stand columns are vertically installed at the four corners of the weighing rack, a bearing plate is horizontally and fixedly arranged on the inner sides of the four supporting stand columns, a positioning block is fixed to the bottom of the bearing plate and placed in a bearing groove, a plurality of compression springs are evenly distributed on a circle of the positioning block in the radial direction, and the outer ends of the compression springs abut against the inner wall of the bearing groove. The inner end of the compression spring abuts against the peripheral side of the positioning block. According to the utility model, the stress of the weighing sensor in the horizontal direction can be reduced, the vibration can be reduced, the weighing is more accurate, and the weighing sensor is prevented from being damaged.

Description

Technical Field

[0001] This utility model relates to a high-precision electronic belt scale, belonging to the technical field of electronic belt scales. Background Technology

[0002] Electronic belt scales, as a continuous weighing device, play an important role in industrial production. By weighing materials on a conveyor belt in real time and continuously, they provide accurate data support for material management in the production process. Electronic belt scales are automatic weighing instruments that can continuously weigh bulk materials on a conveyor belt without needing to subdivide the mass or interrupt the conveyor belt's movement.

[0003] Because electronic belt scales perform dynamic weighing, the belt inevitably vibrates and moves back and forth during transmission. In existing technology, the lower end of the belt scale frame is fixed to the load cell. During weighing, the belt scale will cause the load cell to vibrate, which makes it impossible to guarantee the accuracy of the weighing.

[0004] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0005] This invention addresses the shortcomings of the prior art by providing a high-precision electronic belt scale, which can reduce the horizontal force on the weighing sensor, reduce vibration, make weighing more accurate, and avoid damage to the weighing sensor.

[0006] To solve the above technical problems, the present invention adopts the following technical solution:

[0007] A high-precision electronic belt scale includes a weighing frame, a base frame at the lower end of the weighing frame, a lower base plate on the base frame, a weighing sensor mounted on the upper surface of the lower base plate, and a bearing groove fixedly provided on the upper surface of the weighing sensor.

[0008] The weighing frame is vertically mounted with support columns at its four corners. A bearing plate is horizontally fixed on the inner side of the four support columns. A positioning block is fixed at the bottom of the bearing plate. The positioning block is placed in the bearing groove. Multiple compression springs are evenly distributed around the positioning block along its radial direction. The outer end of the compression spring abuts against the inner wall of the bearing groove, and the inner end of the compression spring abuts against the periphery of the positioning block.

[0009] Furthermore, the bottom surface of the positioning block is equipped with multiple bullseye bearings, and the bottom surface of the positioning block mates with the bottom surface of the bearing groove.

[0010] Furthermore, the positioning block is square, the bearing groove is a square groove with an opening at the top, and two compression springs are provided between each side of the positioning block and the inner wall of the corresponding bearing groove.

[0011] Furthermore, a countersunk hole is provided on the side of the positioning block, and a spring mounting hole is provided at the position corresponding to the bearing groove and the countersunk hole. A plug is installed on the outside of the spring mounting hole, and one end of the compression spring is inserted into the countersunk hole and the other end is inserted into the spring mounting hole.

[0012] Furthermore, a limiting rod is vertically fixed at the middle position of the bearing plate, and a limiting hole is provided on the lower base plate. The limiting rod is inserted into the limiting hole, and the diameter of the limiting hole is larger than the diameter of the limiting rod.

[0013] Furthermore, the upper end of the base frame is also provided with an upper base plate horizontally, and the upper base plate is also provided with a limiting hole corresponding to the limiting rod. The limiting hole on the bearing plate is coaxially arranged with the limiting hole on the upper base plate, and the upper end of the limiting rod is inserted into the limiting hole of the upper base plate.

[0014] Furthermore, a clearance hole is provided on the upper base plate, into which the support column is inserted, and the gap between the support column and the clearance hole is larger than the gap between the limiting rod and the limiting hole.

[0015] Furthermore, a support seat is threadedly installed at the bottom of the support column, and the bottom surface of the support seat is spaced apart from the upper surface of the lower base plate.

[0016] Furthermore, an active roller is installed at the front end of the weighing frame, and a passive roller is installed at the rear end of the weighing frame. The active roller is driven by a drive motor, and a weighing belt is wound between the active roller and the passive roller.

[0017] Furthermore, a tensioning wheel is provided on the lower side of the weighing frame, and a roller bracket is installed on the upper side of the weighing frame. Multiple rollers are provided on the roller bracket, and the rollers are positioned on the lower side of the weighing belt.

[0018] Compared with the prior art, the present invention, by adopting the above technical solution, has the following advantages:

[0019] The positioning block at the bottom of the bearing plate is placed in the bearing groove. Multiple compression springs are evenly distributed around the positioning block along its radial direction. The outer end of the compression spring abuts against the inner wall of the bearing groove, and the inner end of the compression spring abuts against the periphery of the positioning block. This makes the positioning block and the weighing frame movably connected relative to the load cell, reducing the force on the load cell in the horizontal direction, making the weighing more accurate, and avoiding damage to the load cell.

[0020] During the weighing process, the weighing frame of the belt scale will move downwards to a certain extent. Adjusting the gap between the support base and the bottom plate limits the maximum downward movement of the weighing frame by the support base, thus preventing damage to the weighing sensor.

[0021] When the limit rod moves horizontally with the bearing plate, the limit hole limits the displacement of the limit rod to prevent the weighing frame from displacing too much and affecting the weighing accuracy.

[0022] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 yes Figure 1 Enlarged view of point A in the middle.

[0025] In the picture,

[0026] 1-Base frame, 101-Upper base plate, 102-Lower base plate, 2-Active roller, 3-Passive roller, 4-Weighing frame, 5-Drive motor, 6-Support column, 601-Support base, 7-Bearing plate, 8-Positioning block, 9-Counterhole, 10-Bearing groove, 1001-Spring mounting hole, 11-Plug, 12-Compression spring, 13-Bull's eye bearing, 14-Weighing sensor, 15-Idler roller bracket, 16-Idler roller, 17-Tension roller, 18-Baffle, 19-Limit rod, 20-Limit hole, 21-Allowing hole. Detailed Implementation

[0027] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described with reference to the accompanying drawings.

[0028] like Figure 1-2 As shown, this utility model provides a high-precision electronic belt scale, including a weighing frame 4, a base frame 1 at the lower end of the weighing frame 4, a lower base plate 102 on the base frame 1, a weighing sensor 14 installed on the upper surface of the lower base plate 102, and a bearing groove 10 fixedly provided on the upper surface of the weighing sensor 14.

[0029] The weighing frame 4 has four vertically mounted support columns 6. The inner sides of the four support columns 6 are horizontally fixed with bearing plates 7. The bottom of the bearing plates 7 is fixed with positioning blocks 8. The positioning blocks 8 are placed in the bearing groove 10. Multiple compression springs 12 are evenly distributed around the positioning blocks 8 along their radial direction. The outer ends of the compression springs 12 abut against the inner wall of the bearing groove 10, and the inner ends of the compression springs 12 abut against the periphery of the positioning blocks 8. This makes the positioning blocks 8 and the weighing frame 4 movably connected relative to the weighing sensor 14, reducing the force on the weighing sensor 14 in the horizontal direction, making the weighing more accurate, and avoiding damage to the weighing sensor 14.

[0030] Furthermore, a plurality of bullseye bearings 13 are installed on the bottom surface of the positioning block 8, and the bottom surface of the positioning block 8 mates with the inner bottom surface of the bearing groove 10.

[0031] The positioning block 8 is square, and the bearing groove 10 is a square groove with an open top. Two compression springs 12 are provided between each side of the positioning block 8 and the inner wall of the corresponding bearing groove 10.

[0032] The positioning block 8 has a countersunk hole 9 on its side. A spring mounting hole 1001 is provided at the position of the bearing groove 10 corresponding to the countersunk hole 9. A plug is installed on the outside of the spring mounting hole 1001. One end of the compression spring 12 is inserted into the countersunk hole 9 and the other end is inserted into the spring mounting hole 1001.

[0033] A limiting rod 19 is vertically fixed at the middle position of the bearing plate 7. A limiting hole 20 is provided on the lower base plate 102, and the limiting rod 19 is inserted into the limiting hole 20. The diameter of the limiting hole 20 is larger than the diameter of the limiting rod 19. When the limiting rod 19 moves horizontally with the bearing plate 7, the limiting hole 20 limits the displacement of the limiting rod 19 to prevent the weighing frame 4 from displacing too much and affecting the weighing accuracy.

[0034] The upper end of the base frame 1 is also provided with an upper base plate 101 horizontally. The upper base plate 101 is also provided with a limiting hole 20 corresponding to the limiting rod 19. The limiting hole 20 on the bearing plate 7 is coaxially arranged with the limiting hole 20 on the upper base plate 101. The upper end of the limiting rod 19 is inserted into the limiting hole 20 of the upper base plate 101.

[0035] An avoidance hole 21 is also provided on the upper base plate 101. The support column 6 is inserted into the avoidance hole 21, and the gap between the support column 6 and the avoidance hole 21 is larger than the gap between the limiting rod 19 and the limiting hole 20.

[0036] A support base 601 is threadedly installed at the bottom of the support column 6, with a gap between the bottom surface of the support base 601 and the upper surface of the lower base plate 102. During the weighing process, the weighing frame 4 will move downwards to a certain extent. The gap between the support base 601 and the lower base plate 102 is adjusted to limit the maximum downward movement of the support base 601 on the weighing frame 4, preventing damage to the weighing sensor 14.

[0037] The weighing frame 4 has an active roller 2 installed at the front end and a passive roller 3 installed at the rear end. The active roller 2 is driven by a drive motor 5, and a weighing belt is wound between the active roller 2 and the passive roller 3.

[0038] A tensioning wheel 17 is provided on the lower side of the weighing frame 4, and a roller bracket 15 is installed on the upper side of the weighing frame 4. Multiple rollers 16 are mounted on the roller bracket 15, and the rollers 16 are positioned below the weighing belt. The tensioning wheel 17 tightens the belt, while the rollers 16 support the weighing belt, reducing its vibration and thus the vibration of the weighing frame 4, further ensuring weighing accuracy.

[0039] The above description provides examples of the preferred embodiments of this utility model. Any aspects not detailed herein are common knowledge to those skilled in the art. The scope of protection of this utility model is determined by the claims. Any equivalent modifications based on the technical teachings of this utility model are also within the scope of protection of this utility model.

Claims

1. A high-precision electronic belt scale, characterized in that: It includes a weighing frame (4), and a base frame (1) is provided at the lower end of the weighing frame (4). The base frame (1) includes a lower base plate (102), and a weighing sensor (14) is installed on the upper surface of the lower base plate (102). A bearing groove (10) is fixedly provided on the upper surface of the weighing sensor (14). The four corners of the weighing frame (4) are vertically mounted with support columns (6). The inner side of the four support columns (6) is horizontally fixed with a bearing plate (7). The bottom of the bearing plate (7) is fixed with a positioning block (8). The positioning block (8) is placed in the bearing groove (10). A plurality of compression springs (12) are evenly distributed around the positioning block (8) along its radial direction. The outer end of the compression spring (12) abuts against the inner wall of the bearing groove (10), and the inner end of the compression spring (12) abuts against the periphery of the positioning block (8).

2. The high-precision electronic belt scale as described in claim 1, characterized in that: The bottom surface of the positioning block (8) is equipped with multiple bullseye bearings (13), and the bottom surface of the positioning block (8) matches the bottom surface of the bearing groove (10).

3. A high-precision electronic belt scale as described in claim 2, characterized in that: The positioning block (8) is square, and the bearing groove (10) is a square groove with an open top. Two compression springs (12) are provided between each side of the positioning block (8) and the inner wall of the corresponding bearing groove (10).

4. A high-precision electronic belt scale as described in claim 3, characterized in that: The positioning block (8) has a countersunk hole (9) on its side. A spring mounting hole (1001) is provided at the position corresponding to the countersunk hole (9) in the bearing groove (10). A plug is installed on the outside of the spring mounting hole (1001). One end of the compression spring (12) is inserted into the countersunk hole (9), and the other end is inserted into the spring mounting hole (1001).

5. A high-precision electronic belt scale as described in claim 1, characterized in that: A limiting rod (19) is vertically fixed in the middle of the bearing plate (7). A limiting hole (20) is provided on the lower base plate (102). The limiting rod (19) is inserted into the limiting hole (20). The diameter of the limiting hole (20) is larger than the diameter of the limiting rod (19).

6. A high-precision electronic belt scale as described in claim 5, characterized in that: The upper end of the base frame (1) is also provided with an upper base plate (101) horizontally. The upper base plate (101) is also provided with a limiting hole (20) corresponding to the limiting rod (19). The limiting hole (20) on the bearing plate (7) is coaxially arranged with the limiting hole (20) on the upper base plate (101). The upper end of the limiting rod (19) is inserted into the limiting hole (20) of the upper base plate (101).

7. A high-precision electronic belt scale as described in claim 6, characterized in that: An avoidance hole (21) is also provided on the upper base plate (101). The support column (6) is inserted into the avoidance hole (21), and the gap between the support column (6) and the avoidance hole (21) is larger than the gap between the limiting rod (19) and the limiting hole (20).

8. A high-precision electronic belt scale as described in claim 1, characterized in that: The bottom of the support column (6) is threaded with a support base (601), and the bottom surface of the support base (601) is spaced apart from the upper surface of the bottom plate (102).

9. A high-precision electronic belt scale as described in claim 1, characterized in that: The front end of the weighing frame (4) is equipped with an active roller (2) and the rear end of the weighing frame (4) is equipped with a passive roller (3). The active roller (2) is driven by a drive motor (5), and a weighing belt is wound between the active roller (2) and the passive roller (3).

10. A high-precision electronic belt scale as described in claim 9, characterized in that: The weighing frame (4) has a tensioning wheel (17) on its lower side and a roller bracket (15) on its upper side. The roller bracket (15) has multiple rollers (16) on it and the rollers (16) are located on the lower side of the weighing belt.

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