Automatic verification device of belt weigher

Abstract

The utility model discloses an automatic verification device of a belt weigher, which comprises a verification rack, the verification rack is fixedly arranged above the belt weigher, the verification rack is composed of a cross beam and a longitudinal beam which are vertically and fixedly connected, and the top end of the longitudinal beam is fixedly arranged; a closed chain code ring is mounted in the checking rack, the closed chain code ring is wound on a driving roller and a driven roller, and a plurality of carrier rollers which are uniformly distributed are mounted between the driving roller and the driven roller; the two ends of the driving roller and the two ends of the driven roller are installed in the sliding supports respectively, the sliding supports are installed above a checking rack cross beam in a sliding mode, the two ends of the carrier roller are installed in the fixed supports respectively, and the fixed supports are fixedly installed above the checking rack cross beam. According to the automatic verification device provided by the utility model, the circulating chain code can be automatically in place during verification and can automatically return after verification is completed, frequent assembly and disassembly are not needed, and the verification efficiency of the belt weigher is significantly improved.

Description

Technical Field

[0001] This utility model relates to an automatic calibration device for belt scales, belonging to the field of belt scale calibration technology. Background Technology

[0002] A chain code consists of a series of rollers of equal weight and their connecting devices. When the belt is running, the rollers rotate on the belt, and the weight of the chain code can simulate the force exerted by the material on the weighing system. By calculating the corresponding theoretical weight and comparing it with the cumulative weight in the central control system, the belt scale can be calibrated. This calibration method is closer to the actual operating state of the material, so when it is difficult to calibrate with physical materials, a chain code is used to calibrate the belt scale.

[0003] The cyclic chain code is one of the main devices for testing the accuracy of belt scales and is widely used in the calibration of various belt scales.

[0004] Currently, when belt scales need calibration, the cyclic chain code calibration equipment must be installed and then removed after calibration. When belt scales are calibrated frequently, moving the calibration equipment around and frequently installing and removing it not only wastes manpower but also consumes a lot of time, affecting calibration efficiency.

[0005] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0006] This invention addresses the shortcomings of the prior art by providing an automatic calibration device for belt scales. The cyclic chain code can automatically take position during calibration and automatically return to its original position after calibration, eliminating the need for frequent assembly and disassembly and significantly improving calibration efficiency.

[0007] To solve the above technical problems, the present invention adopts the following technical solution:

[0008] The automatic calibration device for the belt scale includes a calibration frame, which is fixedly installed above the belt scale. The calibration frame consists of vertically fixedly connected crossbeams and longitudinal beams, with the top of the longitudinal beams being fixedly installed.

[0009] The inside of the calibration frame is equipped with a closed chain code ring, which is wound around the drive roller and the driven roller. Multiple evenly distributed support rollers are installed between the drive roller and the driven roller.

[0010] The two ends of the drive roller and the driven roller are respectively installed in the sliding bracket, which is slidably installed above the crossbeam of the calibration frame. The two ends of the idler roller are respectively installed in the fixed bracket, which is fixedly installed above the crossbeam of the calibration frame.

[0011] Furthermore, the number of closed chain code rings is two, arranged side by side.

[0012] Furthermore, the drive roller is provided with meshing teeth on its periphery that are connected to the closed chain code ring, and one end of the drive roller is connected to the motor.

[0013] Furthermore, the driven roller has a smooth outer periphery and is slidably connected to the closed chain code ring.

[0014] Furthermore, a slider is fixedly installed at the bottom of the sliding bracket, and a horizontally arranged linear slide rail is fixedly installed above the crossbeam of the calibration frame, with the slider slidably mounted on the linear slide rail.

[0015] Furthermore, the sliding brackets at the ends of both the drive roller and the driven roller are connected to the head of the hydraulic telescopic rod.

[0016] Furthermore, the hydraulic telescopic rods are arranged symmetrically and are fixed horizontally above the crossbeam of the calibration frame.

[0017] Furthermore, the tail end of the hydraulic telescopic rod is fixedly installed using a mounting bracket.

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

[0019] When the belt scale needs to be calibrated, the symmetrically arranged hydraulic telescopic rods retract synchronously, driving the drive roller and the driven roller to move towards each other along the linear slide rail, thereby dropping the closed chain ring onto the weighing belt of the belt scale to calibrate the belt scale; after the belt scale calibration is completed, the symmetrically arranged hydraulic telescopic rods extend synchronously, driving the drive roller and the driven roller to move away from each other along the linear slide rail, thereby lifting the closed chain ring on the weighing belt back into place;

[0020] During the calibration process, belt scales eliminate the need to move the calibration equipment around or frequently disassemble it, which can significantly improve calibration efficiency.

[0021] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0022] Figure 1 This is an installation diagram of this utility model;

[0023] Figure 2 This is a schematic diagram of the structure of this utility model;

[0024] Figure 3 This is a schematic diagram of the sliding bracket installation.

[0025] In the diagram, 1-calibration frame, 2-drive roller, 3-driven roller, 4-enclosed chain code ring, 5-sliding bracket, 6-slider, 7-linear slide rail, 8-hydraulic telescopic rod, 9-fixed seat, 10-idler roller, 11-fixed bracket, 12-belt scale. Detailed Implementation

[0026] 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.

[0027] like Figures 1-3 As shown in the figure, this utility model provides an automatic calibration device for a belt scale, including a calibration frame 1, which is fixedly installed above the belt scale 12, and a closed chain code ring 4 is installed inside the calibration frame 1.

[0028] The calibration frame 1 consists of vertically fixed crossbeams and longitudinal beams, with the top of the longitudinal beams being fixedly installed.

[0029] The number of closed chain code rings 4 is two, arranged side by side.

[0030] The closed chain code ring 4 is wound around the drive roller 2 and the driven roller 3, and a plurality of evenly distributed idler rollers 10 are installed between the drive roller 2 and the driven roller 3.

[0031] The drive roller 2 is provided with meshing teeth that are connected to the closed chain code ring 4 on its periphery, and one end of the drive roller 2 is connected to the motor.

[0032] The driven roller 3 has a smooth outer surface and is slidably connected to the closed chain code ring 4.

[0033] The two ends of the drive roller 2 and the driven roller 3 are respectively installed in the sliding bracket 5. The sliding bracket 5 is slidably installed above the crossbeam of the calibration frame 1. The two ends of the support roller 10 are respectively installed in the fixed bracket 11. The fixed bracket 11 is fixedly installed above the crossbeam of the calibration frame 1.

[0034] The bottom of the sliding bracket 5 is fixedly installed with a slider 6, and a horizontally set linear slide rail 7 is fixedly installed above the crossbeam of the calibration frame 1. The slider 6 is slidably set on the linear slide rail 7.

[0035] The sliding brackets 5 at the ends of the drive roller 2 and the driven roller 3 are both connected to the head of the hydraulic telescopic rod 8. The hydraulic telescopic rod 8 is symmetrically arranged and is fixedly connected to the top of the crossbeam of the calibration frame 1 in the horizontal direction. The tail of the hydraulic telescopic rod 8 is fixedly installed by the fixing seat 9.

[0036] During the retraction process, the hydraulic telescopic rod 8 drives the drive roller 2 and the driven roller 3 to move towards each other; during the extension process, the hydraulic telescopic rod 8 drives the drive roller 2 and the driven roller 3 to move away from each other.

[0037] The specific working principle of this utility model is as follows:

[0038] When the belt scale 12 needs to be calibrated, the symmetrically arranged hydraulic telescopic rods 8 retract synchronously, driving the drive roller 2 and the driven roller 3 to move towards each other along the linear slide rail 7, thereby dropping the closed chain code ring 4 onto the weighing belt of the belt scale 12 to calibrate the belt scale 12.

[0039] After the belt scale 12 is calibrated, the symmetrically arranged hydraulic telescopic rods 8 extend synchronously, driving the drive roller 2 and the driven roller 3 to move in opposite directions along the linear slide rail 7, thereby lifting the closed chain ring 4 on the weighing belt back into place.

[0040] 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. An automatic calibration device for a belt scale, characterized in that: The system includes a calibration frame (1), which is fixedly installed above the belt scale (12). The calibration frame (1) consists of a crossbeam and a longitudinal beam that are vertically and fixedly connected. The top of the longitudinal beam is fixedly installed. A closed chain code ring (4) is installed inside the calibration frame (1). The closed chain code ring (4) is wound around the drive roller (2) and the driven roller (3). Multiple evenly distributed idler rollers (10) are installed between the drive roller (2) and the driven roller (3). The two ends of the drive roller (2) and the driven roller (3) are respectively installed in the sliding bracket (5). The sliding bracket (5) is slidably installed above the crossbeam of the calibration frame (1). The two ends of the idler roller (10) are respectively installed in the fixed bracket (11). The fixed bracket (11) is fixedly installed above the crossbeam of the calibration frame (1).

2. The automatic calibration device for a belt scale as described in claim 1, characterized in that: The number of closed chain code rings (4) is two, arranged side by side.

3. The automatic calibration device for a belt scale as described in claim 1, characterized in that: The drive roller (2) has meshing teeth on its periphery that are connected to the closed chain code ring (4), and one end of the drive roller (2) is connected to the motor.

4. The automatic calibration device for a belt scale as described in claim 1, characterized in that: The driven roller (3) has a smooth outer surface and is slidably connected to the closed chain ring (4).

5. The automatic calibration device for a belt scale as described in claim 1, characterized in that: The sliding bracket (5) has a slider (6) fixedly installed at the bottom, and a horizontally set linear slide rail (7) is fixedly installed above the crossbeam of the calibration frame (1). The slider (6) is slidably set on the linear slide rail (7).

6. The automatic calibration device for a belt scale as described in claim 1, characterized in that: The sliding brackets (5) at the ends of the drive roller (2) and the driven roller (3) are both connected to the head of the hydraulic telescopic rod (8).

7. The automatic calibration device for a belt scale as described in claim 6, characterized in that: The hydraulic telescopic rods (8) are arranged symmetrically and are fixed to the top of the crossbeam of the calibration frame (1) in the horizontal direction.

8. The automatic calibration device for a belt scale as described in claim 7, characterized in that: The tail of the hydraulic telescopic rod (8) is fixedly installed by a fixing seat (9).

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