Gear structure for rotating speed detection

Abstract

The utility model provides a gear structure for rotating speed detection, which can flexibly adjust the number of teeth of a gear, and is simple in structure and low in manufacturing cost. After two or more tooth-shaped structures are stacked, locking and positioning are carried out through the locking structure, and flexible adjustment of the tooth number of the gear structure is achieved; when the tooth-shaped plates are stacked, all the tooth-shaped plates are placed on the same side of the circular bottom plates, the circular bottom plates are stacked from top to bottom, the upper tooth-shaped plate is arranged in the gap for adjustment of the lower tooth-shaped structure, and the tooth number is adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of gears, in particular to a gear structure for rotating speed detection. Background Art

[0002] With the development of intelligent control technology, large equipment such as scraper conveyors, chain conveyors, bucket elevators and other conveying equipment need to monitor the operating status of the equipment during use. For example, for the bucket elevator of the type shown in the patent with publication number CN207061113U, the running speed of the hanging chain needs to be monitored during use. The equipment monitoring system in the prior art includes a speed sensor and a matching monitoring software system. The speed sensor is installed near the axle of the driving wheel or the driven wheel of the bucket elevator, and then the sensor data is transmitted back to the monitoring software system. However, in actual use, there is usually more than one device that needs to monitor the speed in a factory. If a speed sensor is installed for each device based on the prior art and a matching monitoring software system, the overall monitoring cost will be very high. At the same time, because the speeds that need to be monitored for the equipment in the factory are different, for some low-speed equipment, most speed detection controllers on the market cannot accurately detect their speeds. If a high-precision speed monitoring controller is used, the overall cost will increase.

[0003] Therefore, some technicians proposed to install coaxially rotating gears on the rotating shaft, and then use low-cost proximity switches to monitor the gear teeth on the gears to monitor the speed of the driven wheel. At the same time, a monitoring system is configured for all sensors, which can greatly reduce the total cost of the monitoring system.

[0004] However, in actual applications, technicians have found that due to different types of equipment or different rotating parts on the same equipment, the number of teeth on the speed detection gear is usually set according to the matching motor and reducer, and low-speed equipment requires more gear teeth. Therefore, in actual use, each device needs to use a different number of gear teeth. If the required gear type of each machine is confirmed in advance, and then the corresponding gears are purchased or manufactured separately, it still requires considerable human resources and manufacturing costs. Summary of the invention

[0005] In order to solve the problem in the prior art that when using gears with different numbers of teeth, the gears need to be manufactured or purchased separately, resulting in increased costs, the utility model provides a gear structure for speed detection, which can flexibly adjust the number of teeth of the gear, has a simple structure and low manufacturing cost.

[0006] The structure of the utility model is as follows: a gear structure for speed detection, characterized in that it comprises: a locking structure and a toothed structure;

[0007] The toothed structure comprises: a circular bottom plate and a toothed plate;

[0008] The toothed plate is perpendicular to the circular bottom plate and is evenly arranged on one end surface of the circular bottom plate along the circumference of the circular bottom plate;

[0009] There is an adjustment gap between adjacent toothed plates; the width of the adjustment gap is greater than the width of one toothed plate;

[0010] A center hole is provided at the center of the circular bottom plate;

[0011] With the central hole as the center of the circle, annular anti-slip belts are respectively arranged on the upper and lower end surfaces of the circular bottom plate.

[0012] It is further characterized by:

[0013] The locking structure locks two or more tooth-shaped structures based on the central hole;

[0014] The locking structure is realized based on a self-locking nut;

[0015] Two edges of the toothed plate in the width direction are respectively connected to the central hole, and the angle between the two connecting lines is 20°;

[0016] The center points of the width directions of two adjacent toothed plates are respectively connected to the center hole by lines, and the angle between the two connecting lines is 60°.

[0017] The present application provides a gear structure for speed detection, which is achieved by stacking two or more toothed structures and locking them in place through a locking structure, thereby achieving flexible adjustment of the number of teeth of the gear structure; when stacking, all toothed plates are placed on the same side of a circular base plate, and the circular base plates are stacked from top to bottom, with the upper toothed plate being arranged in the adjustment gap of the lower toothed structure, thereby achieving adjustment of the number of teeth; when the circular base plates are stacked, the anti-skid belt on the bottom end surface of the upper circular base plate and the anti-skid belt on the top end surface of the lower circular base plate engage with each other, thereby preventing the toothed plates from being misaligned during installation and use; the present solution can flexibly adjust the number of teeth of the gear, has a simple structure, and has a low manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the gear structure for speed detection;

[0019] Figure 2 This is an example of the combination of two gear structures for speed detection;

[0020] Figure 3 This is an example of an anti-slip tape. DETAILED DESCRIPTION

[0021] like Figure 1 As shown, the present application includes a gear structure for rotation speed detection, which includes: a locking structure (not marked in the figure) and a tooth structure.

[0022] The toothed structure comprises: a circular bottom plate 1 and a toothed plate 2 ; the toothed plate 2 is perpendicular to the circular bottom plate 1 , and is evenly arranged on one side end surface of the circular bottom plate 1 along the circumference of the circular bottom plate 1 .

[0023] There is an adjustment gap 3 between adjacent toothed plates 2; the width of the adjustment gap 3 is greater than the width of one toothed plate 2, ensuring that there is still a gap between adjacent toothed plates 2 when multiple toothed structures are superimposed. The specific adjustment gap 3 and the width of the toothed plate 2 are set according to actual needs. A center hole 4 is set at the center of the circular bottom plate 1; the center of the center hole 4 is the center O of the circular bottom plate 1.

[0024] In this embodiment, the two edges a and a' in the width direction of the toothed plate 2 are connected to the center O respectively, and the angle A between the two connecting lines is 20°. The number of toothed plates 2 set on a circular bottom plate 1 is 6; the center points b and b' in the width direction of two adjacent toothed plates 2 are connected to the center O respectively, and the angle B between the two connecting lines is 60°. The setting of the toothed plate 2 and the adjustment gap 3 in this embodiment meets the requirements of stacking two toothed structures. If there is a need to adjust the number of toothed plates on the gear within a larger range, the toothed plate 2 can be set narrower.

[0025] In this embodiment, a circular thin steel plate made of 304 stainless steel and 1 mm thick is used, the diameter of the thin steel plate is 100 mm, the center hole is 10 mm, and the anti-slip belt is pressed on the range of the center hole diameter of 15 mm. Along the edge of the thin steel plate, a rectangular thin steel sheet is vertically welded by argon arc welding to form a toothed plate 2, and the height of the toothed plate 2 is 20 mm.

[0026] With the central hole 4 as the center of the circle, annular anti-slip belts 5 are respectively arranged on the upper and lower end surfaces of the circular bottom plate 1.

[0027] like Figure 2 As shown, when two tooth-shaped structures are stacked up and down, the anti-skid belt 5 on the bottom end surface of the circular bottom plate 1 in the upper tooth-shaped structure and the anti-skid belt 5 on the upper end surface of the circular bottom plate 1 below are engaged with each other. The anti-skid belt is stamped and can prevent the circular bottom plates 1 from being misaligned during installation or use after being stacked, and ensure that the widths of all adjustment gaps remain the same after the number of teeth is adjusted. The specific structure of the anti-skid belt 5 is based on any structure in the prior art that can achieve self-locking after stacking, such as Figure 3 Shown is an example of an anti-slip belt in a double-stacked self-locking structure.

[0028] The locking structure locks two or more tooth structures based on the center hole 4. When two or more circular bottom plates 1 are stacked, the locking structure passes through the center hole 4 for locking and fixing. In this embodiment, the locking structure is implemented based on a self-locking nut.

[0029] In specific applications, when the equipment speed is relatively fast, a single tooth structure can be used as a speed detection gear. When used in low-speed scenarios, two or three speed detection gears can be staggered and superimposed to increase the number of detection teeth to increase the pulses. After superposition, tighten with a self-locking nut.

[0030] After using the technical solution of the utility model, the number of teeth of the rotation speed detection gear can be flexibly changed at a relatively low cost.

Claims

1. A gear structure for speed detection, characterized in that: It includes: Locking structure and toothed structure; The toothed structure comprises: a circular bottom plate and a toothed plate; The toothed plate is perpendicular to the circular bottom plate and is evenly arranged on one end surface of the circular bottom plate along the circumference of the circular bottom plate; There is an adjustment gap between adjacent toothed plates; the width of the adjustment gap is greater than the width of one toothed plate; A center hole is provided at the center of the circular bottom plate; With the central hole as the center of the circle, annular anti-slip belts are respectively arranged on the upper and lower end surfaces of the circular bottom plate.

2. According to claim 1, a gear structure for speed detection is characterized in that: The locking structure locks two or more tooth-shaped structures based on the central hole.

3. The gear structure for speed detection according to claim 1, characterized in that: The locking structure is realized based on a self-locking nut.

4. The gear structure for speed detection according to claim 1, characterized in that: Two edges in the width direction of the toothed plate are respectively connected to the central hole, and the angle between the two connecting lines is 20°.

5. The gear structure for speed detection according to claim 1, characterized in that: The center points of the width directions of two adjacent toothed plates are respectively connected to the center hole by lines, and the angle between the two connecting lines is 60°.

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