Optical fiber passive non-contact speed measuring device for conveying belt

Abstract

The utility model relates to an optical fiber passive non-contact speed measuring device for a conveying belt, which comprises a speed measuring gear and a speed measuring optical sensor matched with the speed measuring gear, and a speed measuring shaft of the speed measuring gear is connected with a driven roller of a conveying belt conveyor. When the speed measuring device is used, the power of the conveying belt comes from the conveyor, the conveying shaft of the conveyor is connected with the driving shaft, and the driving shaft is connected with the driven roller and drives the driven roller to rotate, so that the speed measuring shaft is directly connected with the driven roller and is not connected with a roller which is in fit contact with the conveying belt; therefore, the situation that the speed measuring device shakes due to the fact that the conveying belt is damaged and abraded after being used for a long time is avoided, and the speed measuring stability is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of conveyor belts, in particular to the technical field of conveyor belt speed measurement, and specifically refers to an optical fiber passive non-contact speed measurement device for conveyor belts. Background Art

[0002] Belt conveyor is a commonly used material conveying equipment composed of a conveyor belt and a frame for installing the conveyor belt. The conveyor belt of the belt conveyor serves as a carrier for transmitting materials. Its speed is related to the flow rate and weight of the material. Therefore, measuring the speed of the conveyor belt can indirectly obtain the weight of the material, so the stability of the speed is an important factor affecting the result.

[0003] The Chinese utility model application number CN202322242275.3 discloses a stable speed measuring device for a conveyor belt. However, the gear used for speed measurement in the device is connected to a roller that is in close contact with the conveyor belt. However, the conveyor belt becomes damaged and worn after long-term use, causing the speed measuring device to shake, thereby affecting the stability of the speed measurement. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides an optical fiber passive non-contact speed measuring device for a conveyor belt, in which a speed measuring shaft for measuring speed is directly connected to a driven roller of a conveyor belt conveyor, thereby not being connected to a roller in close contact with the conveyor belt, thereby avoiding damage and wear of the conveyor belt due to long-term use, causing the speed measuring device to shake and thus affecting the stability of the speed measurement.

[0005] The utility model is realized through the following technical scheme: an optical fiber passive non-contact speed measuring device for a conveyor belt, comprising a speed measuring gear and a speed measuring optical sensor matched with the speed measuring gear, wherein the speed measuring shaft of the speed measuring gear is connected to a driven roller of a conveyor belt conveyor.

[0006] When the utility model is in use, the power of the conveyor belt comes from the conveyor. The conveying shaft of the conveyor is connected with a driving shaft. The driving shaft is connected to the driven roller and drives the driven roller to rotate. Therefore, the speed measuring shaft is directly connected to the driven roller, and is not connected to the roller that is in close contact with the conveyor belt. This avoids the damage and wear of the conveyor belt due to long-term use, which causes the speed measuring shaft to shake and shake, thereby ensuring the stability of speed measurement.

[0007] Preferably, the speed measuring shaft is connected to an intermediate shaft extending in the same direction thereof through a coupling, and the intermediate shaft is coaxially arranged with the driven roller and fixedly connected to the driven shaft. This preferred solution facilitates the connection between the driven roller and the speed measuring shaft through the arrangement of the coupling.

[0008] Preferably, the speed measuring gear is located in a speed measuring box, a flange is provided on the speed measuring box, the speed measuring shaft is rotatably connected in the flange via a bearing, and a sealing ring connected to the speed measuring shaft is also provided in the flange.

[0009] When this preferred solution is in use, the flange bearing is provided to support the speed measuring shaft and is hinged to the speed measuring shaft. The sealing ring is provided to ensure the sealing effect and enhance the overall sealing performance.

[0010] As an optimization, a spacer sleeve located between the speed measuring gear and the bearing is also sleeved on the speed measuring shaft. This optimization solution enhances the stability of the speed measuring gear through the spacer sleeve.

[0011] Preferably, the speed measuring optical sensor is arranged on the speed measuring box, and the gear teeth of the speed measuring gear pass through the sensing notch of the speed measuring optical sensor in sequence along the circumferential direction.

[0012] In this solution, the speed measuring shaft drives the speed measuring gear to rotate, and the teeth of the speed measuring gear pass through the sensing gap of the speed measuring light sensor in sequence. The gear teeth are sensed at intervals by the sensing rays in the sensing gap, thereby realizing the speed calculation of the speed measuring gear, which has high speed measurement stability.

[0013] Preferably, the speed measuring box is a sealed box structure. This preferred solution prevents the speed measuring shaft, speed measuring gear, and speed measuring optical sensor from leaking out through the box structure, and avoids the influence of material spillage and dust on the conveyor belt, which further affects the speed measuring stability.

[0014] Preferably, the side wall of the speed measuring box is further provided with an opening, and a detachable protective cover is sealed and installed at the opening.

[0015] This preferred solution facilitates installation and maintenance of equipment in the box by providing openings and protective covers.

[0016] Preferably, a cable gland is installed on the box body. The preferred solution facilitates the threading and wiring of the wires through the arrangement of the cable gland.

[0017] The beneficial effects of the utility model are as follows: the power of the conveyor belt comes from the conveyor, and a driving shaft is connected to the conveyor shaft of the conveyor, and the driving shaft is connected to the driven roller and drives the driven roller to rotate. Therefore, the speed measuring shaft is directly connected to the driven roller, and is not connected to the roller that is in close contact with the conveyor belt, thereby avoiding the wear and tear of the conveyor belt caused by long-term use, causing the speed measuring device to shake and shake, thereby ensuring the stability of the speed measurement; the speed measuring shaft is supported by the setting of the flange bearing and is hinged with the speed measuring shaft, and the sealing effect is guaranteed by the setting of the sealing ring, and the overall sealing is strengthened; the stability of the speed measuring gear is enhanced by the spacer sleeve; the speed measuring shaft drives the speed measuring gear to rotate, and the gear teeth of the speed measuring gear pass through the sensing notch of the speed measuring light sensor in turn, and the sensing gear teeth are spaced by the sensing rays in the sensing notch, thereby realizing the speed calculation of the speed measuring gear, and having high speed measurement stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0019] Figure 2 It is a side view schematic diagram of the structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the interior of the speed measuring box;

[0021] Figure 4 It is a schematic diagram of the connection between the test shaft and the driven roller;

[0022] As shown in the figure:

[0023] 1. Speed ​​measuring box, 2. Cable gland, 3. Speed ​​measuring optical sensor, 4. Speed ​​measuring gear, 5. Flange, 6. Speed ​​measuring shaft, 7. Sealing ring, 8. Bearing, 9. Spacer sleeve, 10. Driven roller, 11. Coupling. DETAILED DESCRIPTION

[0024] In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.

[0025] Refer to the attached Figure 1-4 The utility model discloses a fiber optic passive non-contact speed measuring device for a conveyor belt, comprising a speed measuring box 1 mounted on a bracket. The speed measuring box 1 is a sealed box structure. An opening is also provided on the side wall of the speed measuring box 1. A detachable protective cover is sealed and installed at the opening. A gland 2 is installed on the speed measuring box 1.

[0026] A speed measuring optical sensor 3 is installed in the speed measuring box 1, and a speed measuring gear 4 is provided directly below the speed measuring optical sensor 3. The gear teeth of the speed measuring gear 4 pass through the sensing notch of the speed measuring optical sensor 3 in the circumferential direction in sequence. A speed measuring shaft 6 is connected to the upper axis of the speed measuring gear 4. A flange 5 is provided on the side wall of the speed measuring box 1. The speed measuring shaft 6 passes through the flange 5 and extends to the outside of the speed measuring box 1. The speed measuring shaft 6 is rotatably connected in the flange 5 through a bearing 8. A sealing ring 7 connected to the speed measuring shaft 6 is also provided in the flange 5. A spacer sleeve 9 located between the speed measuring gear 4 and the bearing 8 is also sleeved on the speed measuring shaft.

[0027] The power of the conveyor belt comes from the conveyor. A driving shaft is connected to the conveying shaft of the conveyor. The driving shaft is connected to the driven roller 10 and drives the driven roller 10 to rotate. The driven roller 10 and the speed measuring shaft 6 extend in the same direction. The speed measuring shaft 6 is connected to an intermediate shaft extending in the same direction through a coupling 11. The intermediate shaft is coaxially arranged with the driven roller 10 and fixedly connected to the driven roller.

[0028] When the utility model is in use, the power of the conveyor belt comes from the conveyor. The conveying shaft of the conveyor is connected with a driving shaft, which is connected to the driven roller 10 and drives the driven roller 10 to rotate. Therefore, the speed measuring shaft 6 is directly connected to the driven roller 10, and is not connected to the roller that is in close contact with the conveyor belt, thereby avoiding the wear and tear of the conveyor belt caused by long-term use, causing the speed measuring device to shake and shake, thereby ensuring the stability of speed measurement; the speed measuring shaft 6 is supported by the setting of the flange 5 bearing 8, and is hinged with the speed measuring shaft 6. The sealing effect is guaranteed by the setting of the sealing ring 7, and the overall sealing is strengthened; the stability of the speed measuring gear 4 is enhanced by the spacing sleeve 9; the speed measuring shaft 6 drives the speed measuring gear 4 to rotate, and the gear teeth of the speed measuring gear 4 pass through the sensing notch of the speed measuring optical sensor 3 in turn, and the sensing gear teeth are spaced by the sensing rays in the sensing notch, thereby realizing the speed calculation of the speed measuring gear 4, and having high speed measurement stability.

[0029] Of course, the above description is not limited to the above examples. The technical features not described in the present invention can be achieved by or by adopting the existing technology, which will not be repeated here. The above embodiments and drawings are only used to illustrate the technical scheme of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that the changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not deviate from the purpose of the present invention and should also fall within the scope of protection of the claims of the present invention.

Claims

1. An optical fiber passive non-contact speed measuring device for a conveyor belt, comprising a speed measuring gear (4) and a speed measuring optical sensor (3) matched with the speed measuring gear (4), characterized in that: The speed measuring shaft (6) of the speed measuring device is connected to a driven roller (10) of the conveyor belt conveyor.

2. The optical fiber passive non-contact speed measuring device for a conveyor belt according to claim 1, characterized in that: The speed measuring shaft (6) is connected to an intermediate shaft extending in the same direction as the speed measuring shaft via a coupling (11); the intermediate shaft is coaxially arranged with the driven roller (10) and is fixedly connected to the driven roller.

3. The optical fiber passive non-contact speed measuring device for a conveyor belt according to claim 1, characterized in that: The speed measuring gear (4) is located in the speed measuring box (1). The speed measuring box (1) is provided with a flange (5). The speed measuring shaft (6) is rotatably connected in the flange (5) via a bearing (8). A sealing ring (7) connected to the speed measuring shaft (6) is also provided in the flange (5).

4. The optical fiber passive non-contact speed measuring device for a conveyor belt according to claim 3, characterized in that: The speed measuring shaft (6) is also sleeved with a spacer sleeve (9) located between the speed measuring gear (4) and the bearing (8).

5. The optical fiber passive non-contact speed measuring device for a conveyor belt according to claim 3, characterized in that: The speed measuring optical sensor (3) is arranged on the speed measuring box (1), and the gear teeth of the speed measuring gear (4) sequentially pass through the sensing notch of the speed measuring optical sensor (3) along the circumferential direction.

6. The optical fiber passive non-contact speed measuring device for a conveyor belt according to claim 5, characterized in that: The speed measuring box (1) is a sealed box structure.

7. The optical fiber passive non-contact speed measuring device for a conveyor belt according to claim 6, characterized in that: The side wall of the speed measuring box (1) is also provided with an opening, and a detachable protective cover is sealed and installed at the opening.

8. The optical fiber passive non-contact speed measuring device for a conveyor belt according to claim 6, characterized in that: The speed measuring box (1) is provided with a cable gland (2).

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