Belt weigher with good stability

Abstract

The utility model discloses a belt weigher with good stability, which comprises a rack, a temperature sensor is arranged on one side of the rack, a support is arranged above the rack, fixing sheets are fixed on two sides of the support, fixing bolts are arranged on the fixing sheets, a carrier roller is arranged above the support, and the carrier roller is arranged on the rack. A mounting plate is fixed below the bracket; according to the belt weigher with good stability, through the arrangement of the temperature sensor, the carrier roller, the weighing sensor, the hydraulic cylinder, the hydraulic rod, the movable frame and the tensioning roller, the temperature sensor can monitor temperature changes in real time and feed back temperature data to a control system for compensation processing, the influence of extreme temperature on metering is avoided, and the device is of an array structure and is convenient to use. The long-term stability and accuracy of equipment metering are effectively improved, the tensioning roller can be driven to ascend and descend through the arrangement of the hydraulic cylinder, the belt is jacked up through the tensioning roller, and therefore the tensioning degree of the belt is adjusted and compensated, and the weighing precision is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field related to belt scales, in particular to a belt scale with good stability. Background Art

[0002] A belt scale is an automatic weighing instrument that continuously weighs bulk materials on a conveyor belt without the need to subdivide the mass or interrupt the movement of the conveyor belt. It is mainly classified by load-bearing device: weighing table load-bearing device, conveyor load-bearing device; and by belt speed: single-speed belt scale, variable-speed belt scale. There is a weighing sensor installed on the weighing bridge on the belt scale. When working, the weight of the material on the belt is detected and sent to the weighing instrument. At the same time, the speed signal of the belt conveyor from the speed sensor is also sent to the weighing instrument. The instrument integrates the speed signal and the weighing signal to obtain the instantaneous flow rate and the cumulative amount.

[0003] The existing belt scales have short geometric dimensions of the entire scale body, which leads to the error caused by the belt effect, which has a great influence on the measurement results and is the biggest factor affecting the poor long-term stability of the belt scales.

[0004] In addition, in northern regions such as the Northeast, the outdoor temperature in winter is generally below -10°C. The ambient temperature has a great impact on the belt scale, which can easily cause the belt to deviate and affect the stable operation of the belt conveyor. Utility Model Content

[0005] The purpose of the utility model is to provide a belt scale with good stability to solve the problems raised in the above background technology.

[0006] To achieve the above purpose, the utility model provides the following technical solutions: a belt scale with good stability, comprising

[0007] A frame, wherein a bracket is installed above the frame, and a roller for supporting the belt is installed above the bracket;

[0008] A weighing sensor is arranged between two adjacent brackets, and multiple groups are arranged at intervals along the length of the rack; each group is provided with at least two weighing sensors, and they are symmetrically installed on both sides of the rack; and

[0009] The tensioning mechanism comprises a tensioning roller for tensioning the belt, the tensioning roller is arranged parallel to the bracket, and a movable frame for rotatably installing the tensioning roller, the movable frame is provided with a hydraulic cylinder for controlling its up and down movement, and the hydraulic cylinder is connected to the frame by a fixed plate.

[0010] Furthermore, both ends of the fixed plate are respectively connected and fixed to the frame, a through hole is provided on the fixed plate, the hydraulic cylinder is mounted on the fixed plate, its hydraulic rod passes through the through hole, and the end of the hydraulic rod is hinged to the top surface of the movable frame.

[0011] Furthermore, the movable frame includes at least a top surface and two end surfaces, the two end surfaces are respectively vertically connected and fixed to the two ends of the top surface, the two ends of the tensioning roller are connected to the two end surfaces, and the circumferential surface of the tensioning roller protrudes from the horizontal line formed between the two end surfaces.

[0012] Furthermore, a hinge buckle is provided on the top surface of the movable frame, and the bottom end of the hydraulic rod is connected to the hinge buckle.

[0013] Furthermore, fixing plates are fixed on both sides of the bracket, fixing bolts are installed on the fixing plates, and the bracket is threadedly connected to the frame through the fixing bolts.

[0014] Furthermore, the fixing plates are symmetrically arranged with respect to the central axis of the bracket.

[0015] Furthermore, a mounting plate is connected below the bracket; a support beam is installed above the mounting plate, and a connecting frame is fixed below the support beam.

[0016] Furthermore, the support beams are distributed in parallel above the mounting plate, and the support beams are connected to the connecting frame by welding.

[0017] Furthermore, the weighing sensors are symmetrically arranged about the central axis of the support beam.

[0018] Furthermore, a temperature sensor is provided. At least one temperature sensor is provided and installed on the frame. The temperature sensor is connected to the control system of the belt scale.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] A belt scale with good stability, the device is an array structure, which effectively improves the long-term stability and accuracy of equipment measurement;

[0021] By setting up multiple groups of weighing sensors, the weighing accuracy of the belt scale can be improved;

[0022] The tension roller and the hydraulic cylinder can be used to drive the tension roller to rise and fall, so that the tension roller lifts the belt, thereby adjusting and compensating the tension of the belt to ensure weighing accuracy;

[0023] The setting of the hydraulic cylinder can also control the extension length of the hydraulic rod, so that the tensioning roller can repeatedly lift and lower the belt, which can play a certain role in deicing the belt;

[0024] The temperature sensor can monitor temperature changes in real time and feed back temperature data to the control system for compensation processing to avoid the impact of extreme temperature on measurement; BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1It is a schematic diagram of the overall structure of the utility model;

[0026] Figure 2 This is a schematic diagram of the structure of the roller of the utility model;

[0027] Figure 3 This is a structural schematic diagram of the support beam of the utility model;

[0028] Figure 4 It is a structural schematic diagram of the tensioning roller of the utility model.

[0029] In the figure: 1. frame; 2. temperature sensor; 3. bracket; 4. fixing plate; 5. fixing bolt; 6. roller; 7. mounting plate; 8. support beam; 9. weighing sensor; 10. connecting frame; 11. fixing plate; 12. hydraulic cylinder; 13. hydraulic rod; 14. movable frame; 15. tensioning roller. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] See also Figure 1-3 The utility model provides a technical solution: a belt scale with good stability, including a frame 1, a weighing sensor 9, a tensioning mechanism and a temperature sensor 2.

[0032] A bracket 3 is installed above the frame 1, and a roller 6 for supporting the belt is installed above the bracket 3. Several brackets 3 are arranged along the frame.

[0033] Both sides of the bracket 3 are fixed with fixing plates 4, and the fixing plates 4 are symmetrically arranged with respect to the central axis of the bracket 3; fixing bolts 5 are installed on the fixing plates 4, and the bracket 3 is threadedly connected to the frame 1 through the fixing bolts 5, so that the bracket 3 can be easily disassembled and assembled, and the structure is relatively flexible.

[0034] A mounting plate 7 is connected below the bracket 3, a support beam 8 is installed above the mounting plate 7, and the support beams 8 are distributed in parallel above the mounting plate 7; a connecting frame 10 is fixed below the support beam 8, and the support beam 8 and the connecting frame 10 are welded.

[0035] The weighing sensor 9 is arranged between two adjacent brackets 3, and multiple groups are arranged at intervals along the length of the frame 1; each group is provided with at least two weighing sensors, and they are symmetrically installed on both sides of the frame 1. As can be seen from the figure, the weighing sensors 9 are symmetrically arranged with the central axis of the support beam 8. The device is an array structure, which effectively improves the long-term stability and accuracy of the equipment measurement.

[0036] The tensioning mechanism has a tensioning roller 15 for tensioning the belt, the tensioning roller 15 is arranged parallel to the bracket 3, and a movable frame for rotating and mounting the tensioning roller 15, the movable frame 14 is provided with a hydraulic cylinder 12 for controlling its up and down movement, and the hydraulic cylinder 12 is connected to the frame 1 by a fixed plate 11. The tensioning roller 15 forms a lifting structure with the movable frame 14 through the hydraulic cylinder 12, and the setting of the hydraulic cylinder 12 can drive the tensioning roller 15 to rise and fall, so that the tensioning roller 15 lifts the belt, thereby adjusting and compensating the tension of the belt, and avoiding the change of the tightness of the belt after long-term use to affect the weighing result. As can be seen from the figure, the tensioning roller 15 is located below the top surface of the frame 1, and its purpose is to act on the downward belt to tension the belt.

[0037] The two ends of the fixed plate 11 are respectively connected and fixed to the frame 1. A through hole is provided on the fixed plate 11. The hydraulic cylinder 12 is installed on the fixed plate 11. Its hydraulic rod 13 passes through the through hole. The end of the hydraulic rod 13 is hinged to the top surface of the movable frame 14. The top surface of the movable frame 14 is provided with a hinge buckle, and the bottom end of the hydraulic rod 13 is connected to the hinge buckle. In this embodiment, the fixed plate 11 and the frame 1 are welded to ensure the weighing accuracy.

[0038] The movable frame 14 at least includes a top surface and two end surfaces, and the two end surfaces are respectively connected and fixed vertically to the two ends of the top surface. In this embodiment, the movable frame 14 is provided with five surfaces, including a top surface, two side surfaces and an end surface, and its bottom is in an open state to facilitate the exposure of the tensioning roller 15. The two ends of the tensioning roller 15 are connected to the two end surfaces, and the circumferential surface of the tensioning roller 15 protrudes from the horizontal line formed between the two end surfaces.

[0039] The utility model is also provided with a temperature sensor 2. At least one temperature sensor 2 is provided and installed on the frame 1. The temperature sensor 2 is connected to the control system of the belt scale.

[0040] Working principle: When using the belt scale with good stability, first turn on the external power supply, then analyze the weight of the material on the belt through the weighing sensor 9, and weigh the material. Through the array structure setting, the long-term stability and accuracy of the equipment measurement can be effectively improved. At the same time, the temperature sensor 2 can monitor the temperature change in real time, and feed back the temperature data to the control system for compensation processing to avoid the influence of extreme temperature on the measurement. Secondly, after using it for a period of time, the tensioning roller 15 can be driven to rise and fall through the setting of the hydraulic cylinder 12, so that the tensioning roller 15 lifts the belt, thereby adjusting and compensating the tension of the belt to ensure the weighing accuracy. When the device is not in use, the external power supply of the device is cut off. The model of the temperature sensor 2 is DHT11, the model of the weighing sensor 9 is DYLY-103, and the model of the hydraulic cylinder 12 is MOB50. In this way, the use process of the belt scale with good stability is completed.

[0041] When the belt freezes in winter, the hydraulic cylinder can be used to control the tensioning roller to move up and down repeatedly, hitting the belt to make the ice on the belt fall off, which helps the belt scale to quickly resume production.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A belt scale with good stability, comprising A frame (1), wherein a bracket (3) is installed above the frame (1), and a roller (6) for supporting a belt is installed above the bracket (3); Weighing sensors (9) are arranged between two adjacent brackets (3), and a plurality of groups are arranged at intervals along the length of the frame (1); each group is provided with at least two weighing sensors, and are symmetrically installed on both sides of the frame; and The tensioning mechanism comprises a tensioning roller (15) for tensioning the belt, the tensioning roller (15) being arranged parallel to the bracket (3), and a movable frame (14) for rotatably mounting the tensioning roller (15), the movable frame (14) being provided with a hydraulic cylinder (12) for controlling its up and down movement, the hydraulic cylinder (12) being connected to the frame (1) via a fixed plate (11).

2. A belt scale with good stability according to claim 1, It is characterized in that The two ends of the fixed plate (11) are respectively connected and fixed to the frame (1); a through hole is provided on the fixed plate (11); the hydraulic cylinder (12) is mounted on the fixed plate (11); its hydraulic rod (13) passes through the through hole; and the end of the hydraulic rod (13) is hinged to the top surface of the movable frame (14).

3. A belt scale with good stability according to claim 2, It is characterized in that The movable frame (14) comprises at least a top surface and two end surfaces, the two end surfaces are respectively vertically connected and fixed to the two ends of the top surface, the two ends of the tensioning roller (15) are connected to the two end surfaces, and the circumferential surface of the tensioning roller (15) protrudes from a horizontal line formed between the two end surfaces.

4. A belt scale with good stability according to claim 2 or 3, It is characterized in that A hinge buckle is provided on the top surface of the movable frame (14), and the bottom end of the hydraulic rod (13) is connected to the hinge buckle.

5. A belt scale with good stability according to claim 1, It is characterized in that Fixing plates (4) are fixed on both sides of the bracket (3), fixing bolts (5) are installed on the fixing plates (4), and the bracket (3) is threadedly connected to the frame (1) via the fixing bolts (5).

6. A belt scale with good stability according to claim 5, It is characterized in that The fixing plate (4) is symmetrically arranged with respect to the central axis of the bracket (3).

7. A belt scale with good stability according to claim 1, It is characterized in that A mounting plate (7) is connected below the bracket (3); a support beam (8) is mounted above the mounting plate (7); and a connecting frame (10) is fixed below the support beam (8).

8. A belt scale with good stability according to claim 7, It is characterized in that The support beams (8) are distributed in parallel above the mounting plate (7), and the support beams (8) are connected to the connecting frame (10) by welding.

9. A belt scale with good stability according to claim 7 or 8, It is characterized in that The weighing sensor (9) is arranged symmetrically with respect to the central axis of the support beam (8).

10. A belt scale with good stability according to claim 1, It is characterized in that A temperature sensor (2) is also provided. At least one temperature sensor (2) is provided and installed on the frame (1). The temperature sensor (2) is connected to the control system of the belt scale.

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