Photoelectric rotating speed measuring device

Abstract

The utility model discloses a photoelectric type rotating speed measuring device, which relates to the technical field of rotating speed measurement, and comprises a sensor and a placing part, the sensor is arranged in the placing part, the back surface of the placing part is hinged with an attaching part, a plurality of rubber rods are arranged between the hinged positions of the placing part and the attaching part, and the rubber rods are arranged in the placing part. The at least two rubber rods are located on the two sides of the hinged position of the containing part and the attaching part and are buffered by the rubber rods when the containing part and the attaching part are oppositely hinged. When the photoelectric rotating speed measuring device is installed, the magnetic linkage can be used for increasing the connection strength, the rubber mat can be adhered to a non-magnetic component, and the rubber ring can realize sealing, exhaust air at the adhesion position and increase the adhesion strength, so that the effect of no falling off during high-speed rotation is realized; and the shell can be buffered by the rubber rod when subjected to accelerated motion or decelerated motion, so that collision is relieved, the service life of the hinge can be prolonged, and the sensor can be quickly taken down from the shell.

Description

Technical Field

[0001] The utility model relates to the technical field of rotation speed measurement, in particular to a photoelectric rotation speed measuring device. Background Art

[0002] At present, laser speed measuring instruments are important equipment in the electromechanical equipment manufacturing industry. Depending on whether the rotating body being measured is in contact with the speed measuring equipment, they are divided into contact measurement and non-contact measurement. When using the contact method for speed measurement, mechanical wear and slippage often produce errors that are difficult to eliminate. The non-contact speed measurement method can overcome the above measurement errors, and the continuous improvement of non-contact speed measurement technology has attracted more attention.

[0003] In the prior art, generally a measuring gear is installed on a device that needs to measure the rotational speed, or a sensor is attached to a rotating component. In addition, based on an old version of the rotational speed measuring instrument, the rotational speed sensor is replaced and a Bluetooth module is added.

[0004] The above devices can all measure the rotation speed relatively accurately, but the bonding sensor method requires a strong bonding force when facing high-speed devices. Generally, in order to facilitate removal, only magnets are used for adsorption. This method is easy to fall off when facing high-speed machines such as medical centrifuges.

[0005] Therefore, a photoelectric rotation speed measuring device is proposed. Utility Model Content

[0006] The utility model aims to overcome the deficiencies of the prior art and provide a photoelectric rotation speed measuring device.

[0007] The purpose of the utility model is achieved through the following technical scheme: a photoelectric rotation speed measuring device, including a sensor and a placing component, the sensor is installed in the placing component, the back of the placing component is hinged with a fitting component, a rubber rod is provided between the hinge positions of the two, and a plurality of rubber rods are provided, at least two, which are located on both sides of the hinge position of the placing component and the fitting component, and the two are cushioned by the rubber rods when they are relatively hinged.

[0008] Furthermore, in the utility model, the fitting component includes a U-shaped shell, a magnetic chain, a magnetic plate and a rubber pad. The inner groove position of the U-shaped shell is hinged to the placement component, the rubber rod is in the U-shaped shell, and baffles are installed in the upper and lower ends of the U-shaped shell. There are two groups of magnetic chains, which are respectively fixed on the two side positions of the U-shaped shell. The magnetic plate and the rubber pad are both fixed on the side of the U-shaped shell away from the placement component, and the two are staggered. A rubber ring is fixedly installed on the side of the U-shaped shell away from the placement component, and the magnetic plate and the rubber pad are in the rubber ring.

[0009] Furthermore, in the utility model, the magnetic chain includes a plurality of strong magnets and a pull rope, the pull rope is fixedly passed through the plurality of strong magnets, and one end of the pull rope is fixedly connected to the U-shaped shell.

[0010] Furthermore, in the utility model, the placement component includes an outer shell, a movable plate and a pressure block. The outer shell is hinged to the U-shaped shell, the movable plate is arranged in the outer shell and is slidably connected to the outer shell, a spring is arranged between the movable plate and the inner bottom wall of the outer shell, one end of the spring is fixed to the movable plate, and the other end of the spring is fixed to the outer shell, two pressure blocks are provided, which are respectively installed on both sides of the upper end of the outer shell and are hinged to the outer shell, and the sensor is placed in the outer shell, and after the sensor is squeezed by the movable plate, its upper end is blocked by the pressure block.

[0011] Furthermore, in the utility model, placement grooves are provided on both sides of the upper end of the shell, the pressing block is arranged in the placement grooves, and a triangular protrusion is provided on the outer edge of the pressing block. The upper end of the triangular protrusion is an inclined surface and the lower end is a flat structure. The pressing block is elastically hinged to the shell. When the pressing block rotates, the triangular protrusion can only face downward, and a handle is fixedly installed on the outside of the pressing block.

[0012] Furthermore, in the present invention, a detection slot communicating with the inside and outside is provided on the front of the shell, and a heat dissipation slot A communicating with the inside and outside is provided on the inner bottom wall of the shell.

[0013] Furthermore, in the present invention, a heat dissipation groove B communicating with each other from top to bottom is provided on the movable plate.

[0014] The beneficial effects of the utility model are:

[0015] The utility model provides a photoelectric rotation speed measuring device. During installation, a magnetic chain can be used to increase the connection strength. The rubber pad can be bonded to a non-magnetic component. The rubber ring can achieve sealing and discharge the air at the bonding position to increase the bonding strength, thereby achieving the effect of not falling off during high-speed rotation. Moreover, when the shell is subjected to accelerated or decelerated motion, it can be buffered by the rubber rod, which not only reduces the collision but also prolongs the life of the hinge. The sensor can also be quickly removed from the shell for easy replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0017] Figure 2 This is a structural diagram of the housing of an embodiment of the utility model;

[0018] Figure 3 It is a partial structural top view of an embodiment of the utility model;

[0019] Figure 4 This is a structural diagram of the bonding component of an embodiment of the utility model;

[0020] Figure 5 This is a structural diagram of the placement of components in an embodiment of the utility model.

[0021] In the figure: 1-sensor; 2-placing component; 201-housing; 202-movable plate; 203-pressing block; 204-spring; 205-placing slot; 206-handle; 207-detection slot; 208-heat dissipation slot A; 209-heat dissipation slot B; 3-fitting component; 301-U-shaped shell; 302-magnetic chain; 3021-strong magnet; 3022-pull rope; 303-magnetic plate; 304-rubber pad; 305-baffle; 306-rubber ring; 4-rubber rod. DETAILED DESCRIPTION

[0022] The following will be combined with the embodiments to clearly and completely describe the technical solution 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 of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-5 , the utility model provides a technical solution:

[0024] A photoelectric rotation speed measuring device includes a sensor 1 and a placement component 2. The sensor 1 is installed in the placement component 2. A fitting component 3 is hinged on the back of the placement component 2. A rubber rod 4 is provided between the hinge positions of the two. There are multiple rubber rods 4, at least two, which are located on both sides of the hinge position of the placement component 2 and the fitting component 3. When the two are relatively hinged, they are buffered by the rubber rods 4.

[0025] Sensor 1 is based on the old version, but replaces stm8 with STM32F103CBT6, adds a Bluetooth module, adds an LED operating status indicator, adds 4 buttons, adds a monochrome OLED display, and changes the power supply to a 3.7V lithium battery. It has a power switch, uses the current FP switch, has a dual-color power / battery indicator, a charging indicator, and a 0.91-inch OLED screen. One button. One type C interface is used for charging and communication.

[0026] The fitting component 3 includes a U-shaped shell 301, a magnetic link 302, a magnetic plate 303 and a rubber pad 304. The inner groove position of the U-shaped shell 301 is hinged with the placement component 2. The rubber rod 4 is in the U-shaped shell 301. The upper and lower ends of the U-shaped shell 301 are both equipped with baffles 305. The magnetic link 302 has two groups, which are respectively fixed on the two side positions of the U-shaped shell 301. The magnetic plate 303 and the rubber pad 304 are both fixed on the side of the U-shaped shell 301 away from the placement component 2. The two are staggered. A rubber ring 306 is fixedly installed on the side of the U-shaped shell 301 away from the placement component 2. The magnetic plate 303 and the rubber pad 304 are in the rubber ring 306. The magnetic link 302 includes a plurality of strong magnets 3021 and a pull rope 3022. The pull rope 3022 is fixed through the plurality of strong magnets 3021, and one end of the pull rope 3022 is fixedly connected to the U-shaped shell 301.

[0027] The magnetic plate 303 and the rubber pad 304 are self-contained structures and can be removed and not used. When necessary, the rubber pad 304 can be used. It is best to use chemical nail-free glue for the rubber pad 304. When it is removed, it needs to be dissolved with a specific solvent. The rubber ring 306 is relatively soft. When it fits the surface of a smooth part, pressing can expel the internal air and increase the bonding strength. The pull cord 3022 is made of a metal chain and can be changed into any shape, but the connection strength is sufficient.

[0028] The placement component 2 includes an outer shell 201, a movable plate 202 and a pressure block 203. The outer shell 201 is hinged to the U-shaped shell 301. The movable plate 202 is arranged in the outer shell 201 and is slidably connected thereto. A spring 204 is arranged between the movable plate 202 and the inner bottom wall of the outer shell 201. One end of the spring 204 is fixed to the movable plate 202, and the other end of the spring 204 is fixed to the outer shell 201. Two pressure blocks 203 are provided, which are respectively installed on both sides of the upper end of the outer shell 201 and are hinged to the outer shell 201. The sensor 1 is placed in the outer shell 201. After the sensor 1 is squeezed by the movable plate 202, its upper end is blocked by the pressure block 203.

[0029] Placement grooves 205 are provided on both sides of the upper end of the shell 201, and the pressure block 203 is arranged in the placement groove 205. The outer circle of the pressure block 203 is provided with a triangular protrusion, the upper end of the triangular protrusion is an inclined surface, and the lower end is a flat structure. The pressure block 203 is elastically hinged to the shell 201. When the pressure block 203 rotates, the triangular protrusion can only face downward, and a handle 206 is fixedly installed on the outer side of the pressure block 203.

[0030] A torsion spring is installed on the hinge axis between the pressing block 203 and the shell 201, and the pressing block 203 is also subjected to the friction force of the side wall of the shell 201. Both are made of plastic, have strong bonding force and are easy to install.

[0031] The front of the housing 201 is provided with a detection slot 207 that is connected inside and outside, and the inner bottom wall of the housing 201 is provided with a heat dissipation slot A208 that is connected inside and outside. The movable plate 202 is provided with a heat dissipation slot B209 that is connected from top to bottom. The detection slot 207 is used to cooperate with the photoelectric sensor.

[0032] Working principle:

[0033] The sensor 1 can be inserted into the housing 201. When inserted, it can pass over the pressure block 203, but it cannot return due to the block 203. When removing it, first press the sensor to make its upper end leave the pressure block 203, and then rotate the pressure block 203 to remove it. When installing the fitting component 3, if you encounter a magnetic component, you can make the magnetic plate 303 fit first, and then make the magnetic chain 302 distributed outside the part. The magnetic chain 302 of the arc-shaped part can be better fitted. In the case of non-magnetic components, rubber pads 304 are used for bonding. When the component rotates faster, the housing 201 will swing a small angle relative to the U-shaped shell 301, and then be blocked by the rubber rod 4. The rubber rod 4 can reduce this resistance and prevent the sensor 1 from being damaged, resulting in inaccurate detection data. The two rubber rods 4 can provide protection during rapid acceleration or deceleration.

[0034] The above is only a preferred embodiment of the utility model. It should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not deviate from the spirit and scope of the utility model, and should be within the scope of protection of the claims attached to the utility model.

Claims

1. A photoelectric speed measuring device, comprising a sensor (1), characterized in that: It also comprises a placement component (2), the sensor (1) being installed in the placement component (2), the back of the placement component (2) being hingedly connected with a fitting component (3), at least two rubber rods (4) being arranged at the hinged position between the placement component (2) and the fitting component (3), the two rubber rods (4) being respectively located at two sides of the hinged position, and being cushioned by the rubber rods (4) when the two are hingedly connected relative to each other.

2. A photoelectric speed measuring device according to claim 1, characterized in that: The fitting component (3) comprises a U-shaped shell (301), a magnetic chain (302), a magnetic plate (303) and a rubber pad (304); the inner groove position of the U-shaped shell (301) is hinged to the placement component (2); the rubber rod (4) is located in the U-shaped shell (301); baffles (305) are installed in the upper and lower ends of the U-shaped shell (301); the magnetic chain (302) is provided with two groups, which are respectively fixed on two side positions of the U-shaped shell (301); the magnetic plate (303) and the rubber pad (304) are both fixed on a side of the U-shaped shell (301) away from the placement component (2), and the two are arranged in a staggered manner; a rubber ring (306) is fixedly installed on a side of the U-shaped shell (301) away from the placement component (2); the magnetic plate (303) and the rubber pad (304) are located in the rubber ring (306).

3. A photoelectric speed measuring device according to claim 2, characterized in that: The magnetic chain (302) comprises a plurality of strong magnets (3021) and a pull rope (3022). The pull rope (3022) is fixedly passed through the plurality of strong magnets (3021), and one end of the pull rope (3022) is fixedly connected to the U-shaped shell (301).

4. A photoelectric speed measuring device according to claim 3, characterized in that: The placement component (2) comprises a shell (201), a movable plate (202) and a pressing block (203); the shell (201) is hinged to the U-shaped shell (301); the movable plate (202) is arranged in the shell (201) and is slidably connected thereto; a spring (204) is arranged between the movable plate (202) and the inner bottom wall of the shell (201); one end of the spring (204) is fixed to the movable plate (202), and the other end of the spring (204) is fixed to the shell (201); two pressing blocks (203) are arranged, which are respectively installed on both sides of the upper end of the shell (201) and are hinged to the shell (201); the sensor (1) is placed in the shell (201); after the sensor (1) is subjected to the squeezing force of the movable plate (202), its upper end is blocked by the pressing block (203).

5. A photoelectric speed measuring device according to claim 4, characterized in that: Both sides of the upper end of the shell (201) are provided with placement grooves (205), and the pressing block (203) is arranged in the placement grooves (205). The outer circle of the pressing block (203) is provided with a triangular protrusion, the upper end of the triangular protrusion is an inclined surface, and the lower end is a flat structure. The pressing block (203) is elastically hinged to the shell (201). When the pressing block (203) rotates, the triangular protrusion can only face downward, and a handle (206) is fixedly installed on the outer side of the pressing block (203).

6. A photoelectric speed measuring device according to claim 5, characterized in that: The front surface of the housing (201) is provided with a detection groove (207) communicating with the inside and outside, and the inner bottom wall of the housing (201) is provided with a heat dissipation groove A (208) communicating with the inside and outside.

7. A photoelectric speed measuring device according to claim 6, characterized in that: The movable plate (202) is provided with a heat dissipation groove B (209) communicating with each other from top to bottom.

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