Rotating speed measuring device for brush motor

Abstract

The utility model belongs to the technical field of rotating speed measurement, and relates to a brush motor rotating speed measuring device comprising a measuring box and a clamping cylinder, the bottom of the measuring box is rotatably provided with two first shaft rods, the first shaft rods are rotatably provided with placing rollers, and the inner walls of the left and right sides of the measuring box are fixedly provided with infrared transceivers; a positioning assembly is arranged at the top of the measuring box, the clamping cylinder is arranged between the two placement rollers and the positioning roller, a reflector plate is embedded in the outer side of the clamping cylinder, an inner gear ring is concentrically and rotationally mounted at the front end of the clamping cylinder, a plurality of sliding grooves are formed in the front end of the clamping cylinder in an annular array mode, and toothed plates are slidably mounted in the sliding grooves; a plurality of first gears corresponding to the toothed plate are rotatably mounted at the front end of the clamping cylinder, a second gear and a driving screw rod are rotatably mounted at the front end of the clamping cylinder, and the second gear is in engaged connection with the inner gear ring and the driving screw rod at the same time; the rotating speed measuring device is used for brush motors with different shaft diameters, and is more stable and accurate.

Description

Technical Field

[0001] The utility model belongs to the technical field of rotational speed measurement, and particularly relates to a brush motor rotational speed measurement device. Background Art

[0002] A motor is a device that converts electrical energy into mechanical energy, generating a rotational force or linear motion through the interaction of an electric current in a magnetic field. Motors are widely used in various devices and systems, including household appliances, industrial machinery, transportation vehicles, and spacecraft. According to different working principles and structures, motors can be classified into various types such as DC motors, AC motors, and stepper motors. Motors play a very important role in modern society and are one of the key components of modern industry and life. A brush motor is a type of motor, and it is necessary to measure its rotational speed during the production process.

[0003] In traditional infrared motor rotational speed measurement methods, a customized sleeve is usually installed on the motor shaft, and an infrared reflector is set on the sleeve and then cooperated with an infrared emitter for measurement. However, traditional sleeves can only be used for motor shafts of specific sizes, with high measurement costs, and the sleeves are prone to eccentric rotation due to centrifugal force during rotation, affecting measurement accuracy and even damaging the motor. Summary of the Utility Model

[0004] In order to solve the technical problems that traditional sleeves can only be used for motor shafts of specific sizes, with high measurement costs, and the sleeves are prone to eccentric rotation due to centrifugal force during rotation, affecting measurement accuracy and even damaging the motor, the utility model provides the following technical solutions:

[0005] The utility model relates to a brush motor rotational speed measurement device, including a measurement box and a clamping cylinder. Two first shaft rods are rotatably installed at the bottom of the measurement box, and a placing roller is rotatably installed on the first shaft rods. Infrared transceivers are fixedly installed on the inner walls of the left and right sides of the measurement box, and a positioning component is arranged at the top of the measurement box;

[0006] The clamping cylinder is arranged between two placing rollers and a positioning roller. A reflector is embedded on the outer side of the clamping cylinder. An internal gear ring is rotatably installed concentrically at the front end of the clamping cylinder. A plurality of sliding grooves are annularly arranged at the front end of the clamping cylinder, and a toothed plate is slidably installed in the sliding grooves. A plurality of first gears are rotatably installed corresponding to the toothed plates at the front end of the clamping cylinder. A second gear and a driving screw are rotatably installed at the front end of the clamping cylinder, and the second gear is meshed and connected with both the internal gear ring and the driving screw at the same time.

[0007] As a preferred technical solution of the utility model, a hanging plate is integrally formed at the rear end of the measurement box, and a positioning column is arranged at the front end of the hanging plate. The diameter of the positioning column is equal to the inner diameter of the clamping cylinder.

[0008] As a preferred technical solution of the present utility model, the positioning assembly includes a moving seat and an adjusting screw rod. Two spring sleeves are provided at the bottom of the moving seat, and a second shaft rod is movably inserted into the bottoms of the two spring sleeves. A positioning roller is rotatably installed on the second shaft rod.

[0009] As a preferred technical solution of the present utility model, two limiting slide rods are fixedly installed at the top of the moving seat, and the moving seat is slidably inserted into the top of the measuring box through the limiting slide rods. The adjusting screw rod is threadedly installed on the top of the measuring box and is rotatably connected to the moving seat. A rotating handwheel is fixedly welded to the top end of the adjusting screw rod.

[0010] As a preferred technical solution of the present utility model, the center of the positioning roller is perpendicular to the midpoint of the connection line of the centers of the two placing rollers.

[0011] As a preferred technical solution of the present utility model, the number of the first gears is the same as the number of the toothed plates, and they are simultaneously meshed with the internal gear ring and the toothed plates.

[0012] The beneficial effects achieved by the present utility model are as follows:

[0013] Rotate the driving screw rod to drive the second gear to rotate. The rotation of the second gear drives the internal gear ring to rotate. The rotation of the internal gear ring drives the first gear to rotate. The rotation of the first gear drives the toothed plate to move through the meshing action with the toothed plate, so as to clamp motor shafts with different diameters.

[0014] Rotate the adjusting screw rod by rotating the handwheel. Under the limiting and guiding action of the limiting slide rods, drive the moving seat to rise and fall. The moving seat descends to press and clamp the clamping cylinder. And by using the movable insertion action of the spring sleeve and the second shaft rod and the elastic action of the spring in the spring sleeve, the stability of the positioning and installation of the clamping cylinder can be improved. To sum up, this rotational speed measuring device is used for brushed motors with different shaft diameters, and adopts infrared measurement and positioning component positioning, which is more stable and accurate. Description of the Drawings

[0015] The drawings are used to provide a further understanding of the present utility model, and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model, and do not constitute a limitation to the present utility model. In the drawings:

[0016] Figure 1 is a structural schematic diagram of a brushed motor rotational speed measuring device of the present utility model;

[0017] Figure 2 is a structural schematic diagram of the measuring box in a brushed motor rotational speed measuring device of the present utility model;

[0018] Figure 3 is a structural schematic diagram of the positioning assembly in a brushed motor rotational speed measuring device of the present utility model;

[0019] Figure 4 It is a schematic structural diagram of a clamping cylinder in a brush motor speed measuring device of the present utility model.

[0020] In the figure: 1. Measuring box; 101. First shaft rod; 102. Placing roller; 103. Infrared transceiver; 104. Positioning column; 2. Clamping cylinder; 201. Reflective sheet; 202. Internal gear ring; 203. Tooth plate; 204. First gear; 205. Second gear; 206. Driving screw; 3. Positioning component; 301. Moving seat; 302. Adjusting screw; 303. Limiting slide bar; 304. Rotating handwheel; 305. Spring sleeve; 306. Second shaft rod; 307. Positioning roller. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] Embodiment: As Figures 1-4 shown, a brush motor speed measuring device includes a measuring box 1 and a clamping cylinder 2. Two first shaft rods 101 are rotatably installed at the bottom of the measuring box 1, and a placing roller 102 is rotatably installed on the first shaft rods 101. Infrared transceivers 103 are fixedly installed on the inner walls of the left and right sides of the measuring box 1. A positioning component 3 is provided on the top of the measuring box 1;

[0023] The clamping cylinder 2 is arranged between two placing rollers 102 and a positioning roller 307. A reflective sheet 201 is embedded on the outer side of the clamping cylinder 2. An internal gear ring 202 is rotatably installed concentrically at the front end of the clamping cylinder 2. A plurality of sliding grooves are annularly arranged at the front end of the clamping cylinder 2, and a tooth plate 203 is slidably installed in the sliding grooves. A plurality of first gears 204 are rotatably installed corresponding to the tooth plate 203 at the front end of the clamping cylinder 2. A second gear 205 and a driving screw 206 are rotatably installed at the front end of the clamping cylinder 2. The second gear 205 is meshed and connected with both the internal gear ring 202 and the driving screw 206. During use, rotating the driving screw 206 drives the second gear 205 to rotate. The rotation of the second gear 205 drives the internal gear ring 202 to rotate. The rotation of the internal gear ring 202 drives the first gear 204 to rotate. The rotation of the first gear 204 drives the tooth plate 203 to move, so as to clamp motor shafts with different diameters.

[0024] The rear end of the measuring box 1 is integrally formed with a hanging plate, and a positioning post 104 is provided at the front end of the hanging plate. The diameter of the positioning post 104 is equal to the inner diameter of the clamping cylinder 2. During use, the clamping cylinder 2 is sleeved on the positioning post 104 to achieve the purpose of positioning the sleeve.

[0025] The positioning assembly 3 includes a moving seat 301 and an adjusting screw 302. Two spring sleeves 305 are provided at the bottom of the moving seat 301, and a second shaft rod 306 is movably inserted into the bottoms of the two spring sleeves 305. A positioning roller 307 is rotatably installed on the second shaft rod 306. During use, the moving seat 301 descends to press the clamping cylinder 2, and by virtue of the movable insertion of the spring sleeve 305 and the second shaft rod 306 and the elastic action of the spring in the spring sleeve 305, the stability of the positioning and installation of the clamping cylinder 2 can be improved.

[0026] Two limiting slide rods 303 are fixedly installed at the top of the moving seat 301, and the moving seat 301 is slidably inserted into the top of the measuring box 1 through the limiting slide rods 303. The adjusting screw 302 is threadedly installed at the top of the measuring box 1 and is rotatably connected to the moving seat 301. A rotating handwheel 304 is fixedly welded to the top end of the adjusting screw 302. During use, by rotating the rotating handwheel 304 to rotate the adjusting screw 302, the moving seat 301 is driven to move up and down under the limiting and guiding action of the limiting slide rods 303 to achieve the purpose of clamping and positioning the clamping cylinder 2 and prevent the clamping cylinder 2 from flying out due to centrifugal force during measurement.

[0027] The center of the positioning roller 307 is perpendicular to the midpoint of the connecting line of the centers of the two placing rollers 102. During use, the positioning roller 307 is located at the midpoint of the connecting line of the centers of the two placing rollers 102 to further improve the stability of the positioning and placement of the clamping cylinder 2.

[0028] The number of the first gears 204 is the same as the number of the toothed plates 203, and they are simultaneously meshed with the internal gear ring 202 and the toothed plates 203. During use, the rotation of the first gears 204 drives the toothed plates 203 to move through the meshing action with the toothed plates 203.

[0029] Specifically, when the utility model is in use, the motor shaft of the brush motor to be measured is inserted into the clamping cylinder 2. The driving screw 206 is rotated to drive the second gear 205 to rotate. The rotation of the second gear 205 drives the internal gear ring 202 to rotate. The rotation of the internal gear ring 202 drives the first gear 204 to rotate. The rotation of the first gear 204 drives the tooth plate 203 to move through the meshing action with the tooth plate 203, so as to clamp the motor shafts of different diameters. After clamping, the clamping cylinder 2 is located on the two placing rollers 102 and is inserted on the positioning column 104 for positioning. The adjusting screw 302 is rotated by rotating the hand wheel 304, and the moving seat 301 is driven to lift and lower under the limiting and guiding action of the limiting slide rod 303. The moving seat 301 descends to press the clamping cylinder 2. The motor to be measured is started, and the motor to be measured drives the clamping cylinder 2 to rotate. During the rotation of the clamping cylinder 2, the infrared transceiver 103 emits infrared rays, and when the reflector 201 on the clamping cylinder 2 passes through the infrared rays, the infrared rays can be reflected to the infrared transceiver 103 for reception, so as to perform counting and measuring the rotation speed.

[0030] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "front", "center", "both ends", etc. is the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present utility model.

[0031] In addition, the terms "first", "second", "third", "fourth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", "third", "fourth" may explicitly or implicitly include at least one of such features.

[0032] In the present utility model, unless otherwise clearly defined and limited, the terms "installed", "set", "connected", "fixed", "swiveling connection", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. Unless otherwise clearly limited, for those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0033] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A brushless motor speed measuring device, comprising a measuring box (1) and a clamping cylinder (2), characterized in that: Two first shafts (101) are rotatably mounted on the bottom of the measuring box (1), and a placement roller (102) is rotatably mounted on the first shafts (101); infrared transceivers (103) are fixedly mounted on the inner walls on both sides of the measuring box (1); and a positioning assembly (3) is provided on the top of the measuring box (1); The clamping cylinder (2) is arranged between two placing rollers (102) and a positioning roller (307), a reflective sheet (201) is embedded on the outer side of the clamping cylinder (2), an inner gear ring (202) is coaxially rotatably mounted on the front end of the clamping cylinder (2), a plurality of slide grooves are provided in an annular array at the front end of the clamping cylinder (2), and a toothed plate (203) is slidably mounted in the slide grooves, a plurality of first gears (204) are rotatably mounted on the front end of the clamping cylinder (2) corresponding to the toothed plate (203), a second gear (205) and a driving screw (206) are rotatably mounted on the front end of the clamping cylinder (2), and the second gear (205) is meshingly connected with the inner gear ring (202) and the driving screw (206) at the same time.

2. A brushed motor speed measuring device according to claim 1, characterized in that: The rear end of the measuring box (1) is integrally formed with a hanging plate, and the front end of the hanging plate is provided with a positioning column (104), the diameter of the positioning column (104) being equal to the inner diameter of the clamping tube (2).

3. The brushless motor speed measuring device according to claim 1, characterized in that: The positioning assembly (3) comprises a movable seat (301) and an adjusting screw (302); two spring sleeves (305) are provided at the bottom of the movable seat (301); a second shaft (306) is movably inserted at the bottom of the two spring sleeves (305); a positioning roller (307) is rotatably mounted on the second shaft (306).

4. The brushless motor speed measuring device according to claim 3, characterized in that: Two limiting slide bars (303) are fixedly mounted on the top of the movable seat (301), and the movable seat (301) is slidably inserted on the top of the measuring box (1) through the limiting slide bars (303); the adjusting screw (302) is threadedly mounted on the top of the measuring box (1), and the adjusting screw (302) is rotatably connected to the movable seat (301); and a rotating hand wheel (304) is fixedly welded on the top of the adjusting screw (302).

5. The brushed motor speed measuring device according to claim 4, characterized in that: The center of the positioning roller (307) is perpendicular to the midpoint of the line connecting the centers of the two placement rollers (102).

6. The brushed motor speed measuring device according to claim 1, characterized in that: The number of the first gears (204) is the same as the number of the toothed plates (203) and they are meshed and connected with the inner gear ring (202) and the toothed plates (203) at the same time.

Images