Ton weight calibration and centering device

Abstract

The invention discloses a ton weight calibration and centering device, comprising a base, the upper surface of the base is connected with a load-bearing frame, the load-bearing frame is provided with a placement hole, the upper surface of the load-bearing frame is provided with a slide groove, the slide groove is provided with a placement platform, the interior of the base is provided with a rectangular through hole, a pushing cylinder is provided in the rectangular through hole, the upper surface of the base is fixedly connected with a slide rail, a sliding seat is provided on the slide rail, the lower surface of the sliding seat is connected with a connecting block, the protruding end of the pushing cylinder is connected to the sliding block, the pushing cylinder of the invention can drive the placement platform to move backward, so that a mass comparator placed in the limiting groove is located below the ton weight, ensuring that the ton weight can be placed at the center of the mass comparator, and it is more convenient to move, the slide rail ensures that the moving plate moves up and down more stably and is not prone to shaking, thereby ensuring a good centering effect, reducing the calibration error, and being easy to use.

Description

Technical Field

[0001] The invention relates to the technical field of metrology verification, in particular to a ton weight verification and centering device. Background Art

[0002] Before using ton weights, they need to be calibrated with corresponding accuracy so that their performance meets the specified measurement requirements to ensure the accuracy of the value transmission. Ton weights are weighed with a mass comparator, and the scale platform of the mass comparator is used to bear ton weights. The core part is the four weighing sensors of the scale platform, which are evenly distributed at the four corners under the scale platform and fixed after installation. During calibration, the position of the ton weight on the scale platform will directly affect the measurement result. Deviating from the center position will cause deviation in the measurement result, so a centering device is required.

[0003] In the existing centering device, the ton weight is moved to be located at the center of the mass comparator. During the movement, shaking is likely to occur, resulting in poor centering accuracy, increased calibration errors, and inconvenient use. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings in the prior art and to propose a ton weight calibration and centering device.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a ton weight calibration and centering device comprises a base, the upper surface of the base is fixedly connected with a load-bearing frame, a placement hole is arranged inside the load-bearing frame, a slide groove is arranged on the upper surface of the load-bearing frame, a placement platform that can slide along the slide groove is arranged on the slide groove, a rectangular through hole is arranged inside the base, a pushing cylinder is arranged in the rectangular through hole, a slide rail is fixedly connected with the upper surface of the slide rail, a sliding seat is slidably connected with the upper surface of the sliding rail, a connecting block is fixedly connected with the lower surface of the sliding seat, the output end of the pushing cylinder is fixedly connected with the connecting block, a limiting groove is arranged on the upper surface of the sliding seat, and a connecting rod is fixedly connected between the sliding seat and the placement platform;

[0006] The upper surface of the load-bearing frame is fixedly connected with a mounting frame, the upper surface of the mounting frame is provided with a lifting device, the lower surface of the mounting frame is fixedly connected with a sliding rod, the outer surface of the sliding rod is slidably connected with a moving plate, the upper surface of the moving plate is fixedly connected with a connecting ring, the lower surface of the moving plate is fixedly connected with a hook, and the output end of the lifting device is fixedly connected with the connecting ring;

[0007] When in use, first place the mass comparator in the limiting slot, place the ton weight on the placing platform, move the placing platform backwards to make the placing hole leak out, and at this time the mass comparator is located directly below the ton weight.

[0008] As a further description of the above technical solution:

[0009] The slide rail is located on the inner side of the load-bearing frame.

[0010] As a further description of the above technical solution:

[0011] The connecting rod is L-shaped and there are two of them.

[0012] As a further description of the above technical solution:

[0013] The limiting groove is located on the inner side of the connecting rod, and the placing platform is located on the inner side of the mounting frame.

[0014] As a further description of the above technical solution:

[0015] The limiting groove is located below the placement hole, and the placement platform is located above the load-bearing frame.

[0016] As a further description of the above technical solution:

[0017] There are two sliding bars.

[0018] As a further description of the above technical solution:

[0019] The movable plate is located on the inner side of the mounting frame, and the hook is located above the placement platform.

[0020] As a further description of the above technical solution:

[0021] The pushing cylinder is located at the rear of the connecting block, and the sliding groove is located at the outside of the placement hole.

[0022] The present invention has the following beneficial effects:

[0023] 1. Compared with traditional technology, the ton weight verification and centering device is equipped with an electric push rod, a sliding seat, a slide rail, a slide groove, a placement platform, and a limiting groove. The electric push rod can drive the placement platform to move backward so that the mass comparator placed in the limiting groove is located below the ton weight, ensuring that the ton weight can be placed in the center of the mass comparator, which is more convenient to move.

[0024] 2. Compared with traditional technology, the ton weight calibration and centering device is equipped with slide rails, movable plates and hooks. The slide rails ensure that the movable plate can move up and down stably and is not prone to shaking, thus ensuring a good centering effect, reducing calibration errors and being easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the structure of the ton weight verification and centering device proposed by the present invention;

[0026] Figure 2 It is a front view of the ton weight verification and centering device proposed by the present invention;

[0027] Figure 3 It is a bottom view of the ton weight verification and centering device proposed by the present invention;

[0028] Figure 4 This is a structural schematic diagram of another state of the ton weight verification and centering device proposed by the present invention.

[0029] Legend:

[0030] 1. Sliding seat; 2. Restriction groove; 3. Load-bearing frame; 4. Mounting frame; 5. Connecting ring; 6. Lifting device; 7. Sliding rod; 8. Moving plate; 9. Hook; 10. Connecting rod; 11. Slide rail; 12. Base; 13. Slide groove; 14. Placement platform; 15. Pushing cylinder; 16. Rectangular through hole; 17. Connecting block; 18. Placement hole. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe 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 the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] Reference Figure 1-4, an embodiment of the present invention provides: a ton weight calibration and centering device, including a base 12, a load-bearing frame 3 is fixedly connected to the upper surface of the base 12, used to bear the weight of the ton weight, a placement hole 18 is arranged inside the load-bearing frame 3, used to move the ton weight downward and place it at the center of the mass comparator, a slide groove 13 is arranged on the upper surface of the load-bearing frame 3, the slide groove 13 is located outside the placement hole 18, a placement platform 14 is arranged inside the slide groove 13, used to place the ton weight for easy lifting, the placement platform 14 is located on the inner side of the mounting frame 4, and the placement platform 14 is located above the load-bearing frame 3;

[0034] A rectangular through hole 16 is provided inside the base 12, and a push cylinder 15 is provided inside the rectangular through hole 16. The push cylinder 15 is located behind the connecting block 17, and the output end of the push cylinder 15 is fixedly connected to the connecting block 17. The upper surface of the base 12 is fixedly connected with a slide rail 11, and the slide rail 11 is located on the inner side of the load-bearing frame 3. The upper surface of the slide rail 11 is slidably connected with a slide seat 1, and the lower surface of the slide seat 1 is fixedly connected with the connecting block 17. The upper surface of the slide seat 1 is provided with a limiting groove 2 for placing a mass comparator to ensure accurate placement. The limiting groove 2 is located below the placement hole 18, and the limiting groove 2 is located on the inner side of the connecting rod 10. The connecting rod 10 is fixedly connected between the sliding seat 1 and the placement platform 14. The connecting rod 10 is L-shaped and there are two of them. When in use, the mass comparator is first placed in the limiting groove 2, and then the cylinder 15 is pushed to drive the connecting block 17, and the connecting block 17 drives the sliding seat 1 to move backward. At the same time, the placing platform 14 can be driven to move backward through the connecting rod 10, so that the placement hole 18 leaks out. At this time, the mass comparator is located directly below the ton weight;

[0035] The upper surface of the load-bearing frame 3 is fixedly connected to the mounting frame 4, and a lifting device 6 is arranged on the upper surface of the mounting frame 4. The output end of the lifting device 6 is fixedly connected to the connecting ring 5. The lower surface of the mounting frame 4 is fixedly connected to the sliding rod 7. There are two sliding rods 7 to ensure that the moving plate 8 can move up and down stably and is not prone to shaking. The outer surface of the sliding rod 7 is slidably connected to the moving plate 8. The moving plate 8 is located on the inner side of the mounting frame 4. The upper surface of the moving plate 8 is fixedly connected to the connecting ring 5. The lower surface of the moving plate 8 is fixedly connected to the hook 9 for fixing the ton weight. The hook 9 is located above the placing platform 14. A rectangular through hole 16 is arranged inside the base 12 to provide a position for the connecting block 17 to move forward and backward. The lifting device 6 can drive the moving plate 8 to move up and down, thereby driving the ton weight to move up and down, thereby improving the centering efficiency.

[0036] Working principle: When in use, first place the mass comparator in the limiting groove 2, and the ton weight is placed on the placement platform 14. The lifting device 6 drives the movable plate 8 to move upward, thereby driving the ton weight to move upward. The slide bar 7 can ensure that the movable plate 8 moves relatively stably and is not prone to shaking. Then push the cylinder 15 to drive the connecting block 17, and the connecting block 17 drives the sliding seat 1 to move backward. At the same time, the placement platform 14 can be driven to move backward through the connecting rod 10, so that the placement hole 18 leaks out. At this time, the mass comparator is located directly below the ton weight, and then the lifting device 6 drives the movable plate 8 to move downward, thereby driving the ton weight to move downward, so that the ton weight is placed on the center line of the mass comparator.

[0037] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A ton weight calibration and centering device, comprising a base (12), characterized in that: The upper surface of the base (12) is fixedly connected with a load-bearing frame (3), a placement hole (18) is arranged inside the load-bearing frame (3), a slide groove (13) is arranged on the upper surface of the load-bearing frame (3), a placement platform (14) which can slide along the slide groove (13) is arranged on the slide groove (13), a rectangular through hole (16) is arranged inside the base (12), a pushing cylinder (15) is arranged inside the rectangular through hole (16), the upper surface of the base (12) is fixedly connected with a slide rail (11), the upper surface of the slide rail (11) is slidably connected with a sliding seat (1), the lower surface of the sliding seat (1) is fixedly connected with a connecting block (17), the output end of the pushing cylinder (15) is fixedly connected to the connecting block (17), the upper surface of the sliding seat (1) is provided with a limiting groove (2), and a connecting rod (10) is fixedly connected between the sliding seat (1) and the placement platform (14); The upper surface of the load-bearing frame (3) is fixedly connected to a mounting frame (4), the upper surface of the mounting frame (4) is provided with a lifting device (6), the lower surface of the mounting frame (4) is fixedly connected to a sliding rod (7), the outer surface of the sliding rod (7) is slidably connected to a moving plate (8), the upper surface of the moving plate (8) is fixedly connected to a connecting ring (5), the lower surface of the moving plate (8) is fixedly connected to a hook (9), and the output end of the lifting device (6) is fixedly connected to the connecting ring (5); When in use, the mass comparator is first placed in the limiting groove (2), and the ton weight is placed on the placement platform (14). The placement platform (14) moves backward to allow the placement hole (18) to leak out. At this time, the mass comparator is located directly below the ton weight.

2. The ton weight calibration and centering device according to claim 1 is characterized in that: The slide rail (11) is located on the inner side of the load-bearing frame (3).

3. The ton weight calibration and centering device according to claim 1 is characterized in that: The connecting rod (10) is L-shaped and there are two of them.

4. The ton weight calibration and centering device according to claim 1, characterized in that: The limiting groove (2) is located on the inner side of the connecting rod (10), and the placing platform (14) is located on the inner side of the mounting frame (4).

5. The ton weight calibration and centering device according to claim 1 is characterized in that: The limiting groove (2) is located below the placement hole (18), and the placement platform (14) is located above the load-bearing frame (3).

6. The ton weight calibration and centering device according to claim 1, characterized in that: The number of the sliding rods (7) is two.

7. The ton weight calibration and centering device according to claim 1 is characterized in that: The movable plate (8) is located on the inner side of the mounting frame (4), and the hook (9) is located above the placement platform (14).

8. The ton weight calibration and centering device according to claim 1 is characterized in that: The pushing cylinder (15) is located behind the connecting block (17), and the sliding groove (13) is located outside the placement hole (18).

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