Motor rotating speed detection device

Abstract

The utility model provides a motor rotating speed detection device, and relates to the technical field of rotating speed detection devices, the motor rotating speed detection device comprises a rotating speed detector body, the top and the bottom of one side of the rotating speed detector body are respectively provided with a display screen and a plurality of operation buttons, and the two sides of the rotating speed detector body are bonded with anti-slip strips. The rotating speed detector comprises a rotating speed detector body, the top of the rotating speed detector body is rotatably connected with a connecting rod, the outer surface of the connecting rod is sleeved with a connecting piece, and the top of the connecting rod is provided with a rectangular cavity. The bolt is inserted into the connecting rod and enters the inner wall of the connecting piece, so that the bolt can assist in fixing the connecting rod and the connecting piece, connection between the connecting piece and the connecting rod of the motor rotating speed detection device is prevented from loosening, and the rotating speed detection error of the motor rotating speed detection device is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of speed detection devices, and in particular to a motor speed detection device. Background Technology

[0002] Motor speed detection devices are used to measure the speed of motors and are widely used in industrial automation, vehicles, home appliances and other fields. For example, on assembly lines, motor speed detection devices can be used to detect the speed of the motor-driven conveyor belt to ensure that products can be accurately positioned and transported during the production process.

[0003] When using a motor speed detection device to detect the speed of a motor, the motor output needs to be connected to the connecting parts of the detection device. Different specifications of motors require different connecting parts, so the connecting parts need to be replaced when detecting the speed of motors of different specifications. The connecting parts are mainly fitted onto the connecting rod of the motor speed detection device. When the connecting parts are constantly replaced, wear inevitably occurs on the inner wall of the connecting parts. This will cause the connection between the connecting parts and the connecting rod of the motor speed detection device to loosen, which will lead to an increase in the speed detection error of the motor speed detection device. Utility Model Content

[0004] This utility model proposes a motor speed detection device to solve the problem that when the connecting parts are constantly replaced, the inner wall of the connecting parts will inevitably be worn, which will cause the connection between the connecting parts and the connecting rod of the motor speed detection device to become loose, and thus increase the speed detection error of the motor speed detection device.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a speed detector body, wherein a display screen and several operation buttons are respectively provided on the top and bottom of one side of the speed detector body; anti-slip strips are adhered to both sides of the speed detector body; a connecting rod is rotatably connected to the top of the speed detector body; a connecting piece is sleeved on the outer surface of the connecting rod; a rectangular cavity is provided at the top of the connecting rod; an auxiliary device is provided inside the connecting rod; the auxiliary device uses the movement of a pin to lock and fix the connecting rod and the connecting piece; laser emitting lights are symmetrically arranged on the top of the speed detector body; two laser emitting lights are arranged on both sides of the connecting rod; and a protective device is provided on one side of each laser emitting light.

[0006] The effect achieved by the above components is as follows: after the connector is fitted onto the outer surface of the connecting rod, the pin is adjusted so that it passes through the inner wall of the connecting rod and enters the inner wall of the connector. The pin can then provide auxiliary fixation between the connecting rod and the connector, which helps to prevent the connection between the connector and the connecting rod of the motor speed detection device from becoming loose, thereby reducing the speed detection error of the motor speed detection device.

[0007] Preferably, the auxiliary device includes a rectangular plate, the outer surface of which is slidably connected to the inner wall of the connecting rod, a threaded pin is rotatably connected to the bottom of one side of the rectangular plate, the outer surface of which is threadedly connected to the inner wall of the connecting rod, a pin is fixedly connected to the middle of the other side of the rectangular plate, and an insertion hole is opened on the outer surface of the connector, the outer surface of which is inserted into the inner wall of the connecting rod and the insertion hole.

[0008] The effect achieved by the above components is as follows: by setting the threaded pin, the threaded pin can extend and retract on the inner wall of the connecting rod, and drive the pin connected to the rectangular plate to move synchronously, so that the pin enters the insertion hole of the connector, making it convenient to adjust the pin through the threaded pin on the outside of the connecting rod.

[0009] Preferably, a spring is fixedly connected to the top of one side of the rectangular plate, one end of the spring is fixedly connected to one side of the inner wall of the connecting rod, a round rod is provided inside the spring, the outer surface of the round rod is slidably connected to the inner wall of the rectangular plate, and the two ends of the round rod are respectively fixedly connected to the two sides of the inner wall of the connecting rod.

[0010] The effect achieved by the above components is as follows: by setting a spring, one end of the spring is fixed to the top of the rectangular plate, and the spring is always in a compressed state in the cavity inside the connecting rod. The spring will squeeze the top of the rectangular plate, thereby ensuring that the threaded pin can drive the rectangular plate to move to one side of the insertion hole. The round rod can simultaneously limit the spring and the rectangular plate, preventing the spring from bending during deformation, and making the rectangular plate more stable during movement.

[0011] Preferably, a ring is fixedly connected to the bottom of the outer surface of the connecting rod, and the outer surface of the threaded pin is inserted into the inner wall of the round rod.

[0012] The effect achieved by the above components is that by setting a ring, one side of the ring can limit one end of the connector and prevent one end of the connector from abutting against the threaded pin under the action of gravity, thus affecting the adjustment of the threaded pin.

[0013] Preferably, a locking block is fixedly connected to the top of the ring and the outer surface of the connecting rod, and a locking groove is opened at the bottom of the connecting member, with the outer surface of the locking block inserted into the inner wall of the locking groove.

[0014] The effect achieved by the above components is that, by setting the card block and the card slot, after the card block is inserted into the card slot, the pin is aligned with the insertion hole on the connector, which facilitates the quick installation of the connector.

[0015] Preferably, the protective device includes a protective plate, which is disposed on one side of the laser emitting lamp. The protective plate is made of transparent resin material, and a fixing block is fixedly connected to both ends of the protective plate. One side of each fixing block abuts against both sides of the speed detector body. A limiting rod is inserted into the inner wall of the fixing block, and one end of the limiting rod is fixedly connected to one side of the speed detector body.

[0016] The effect achieved by the above-mentioned components is that by setting a protective plate made of transparent resin material, one side of the laser emitter can be blocked and protected without hindering the laser emitter from emitting laser light, thus preventing debris from directly hitting or rubbing against the laser emitter and causing damage to the laser emitter.

[0017] Preferably, one side of the fixing block is provided with an open-type limiting groove. The opening of the limiting groove is relatively wide and gradually narrows inward. The narrow end of the limiting groove is connected to a circular groove. The size and shape of the outer surface of the limiting rod are adapted to the size and shape of the inner wall of the circular groove. One end of the pin is provided with a rubber block.

[0018] The effects achieved by the above components are as follows: the opening of the limiting groove is large, which facilitates the entry of the limiting rod. After the limiting rod enters the circular groove, it can fix the limiting rod and the fixing block, thereby fixing the protective plate. One side of the rubber block abuts against one side of the fixing block, which can provide auxiliary fixation between the fixing block and the limiting rod.

[0019] Preferably, U-shaped blocks are symmetrically fixedly connected to the top of both sides of the speed detector body, and the outer surface of the fixing block is inserted into the inner wall of the U-shaped block.

[0020] The effect achieved by the above components is that the U-shaped block can limit the position of the fixed block and prevent the protective plate connected to the fixed block from shaking.

[0021] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0022] In this invention, by setting a pin, after the connector is sleeved on the outer surface of the connecting rod, the pin is adjusted so that it passes through the inner wall of the connecting rod and enters the inner wall of the connector. The pin can then provide auxiliary fixation between the connecting rod and the connector, which helps to prevent the connection between the connector and the connecting rod of the motor speed detection device from becoming loose, thereby reducing the speed detection error of the motor speed detection device. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the main body of this utility model;

[0024] Figure 2 This is a three-dimensional structural diagram of the auxiliary device of this utility model;

[0025] Figure 3 This utility model Figure 2 A magnified structural diagram at point A;

[0026] Figure 4 This is a three-dimensional structural diagram of the protective device of this utility model;

[0027] Figure 5 This utility model Figure 4 A magnified structural diagram at point B;

[0028] Figure 6 This is a three-dimensional structural diagram of the protective plate of this utility model.

[0029] Legend: 1. Tachometer body; 2. Display screen; 3. Operation buttons; 4. Anti-slip strip; 5. Connecting rod; 6. Connector; 7. Auxiliary device; 71. Rectangular plate; 72. Threaded pin; 73. Pin; 74. Hole; 75. Spring; 76. Round rod; 77. Ring; 78. Locking block; 79. Slot; 8. Laser emitter; 9. Protective device; 91. Protective plate; 92. Fixing block; 93. Limiting rod; 94. U-shaped block. Detailed Implementation

[0030] Example 1, referring to Figures 1-5As shown, this embodiment discloses a motor speed detection device, including a speed detector body 1. A display screen 2 and several operation buttons 3 are respectively provided on the top and bottom of one side of the speed detector body 1. Anti-slip strips 4 are adhered to both sides of the speed detector body 1. A connecting rod 5 is rotatably connected to the top of the speed detector body 1. A connecting piece 6 is sleeved on the outer surface of the connecting rod 5. A rectangular cavity is provided at the top of the connecting rod 5. An auxiliary device 7 is provided inside the connecting rod 5. The auxiliary device 7 uses a pin 73 to lock and fix the connecting rod 5 and the connecting piece 6. Laser emitting lights 8 are symmetrically arranged on the top of the speed detector body 1. Two laser emitting lights 8 are arranged on both sides of the connecting rod 5. A protective device 9 is provided on one side of each laser emitting light 8. After the connecting piece 6 is sleeved on the outer surface of the connecting rod 5, the pin 73 is adjusted so that the pin 73 passes through the inner wall of the connecting rod 5 and enters the inner wall of the connecting piece 6. Then, the pin 73 can lock and fix the connecting rod 5 and the connecting piece 6. The auxiliary fixing of the connectors 6 helps prevent loosening of the connection between the connectors 6 and the connecting rod 5 of the motor speed detection device, thereby reducing the speed detection error of the motor speed detection device. The connecting rod 5 and the connectors 6 are the contact detection methods of the motor speed detection device. The motor output end is directly connected to the connectors 6. The motor output end will drive the connectors 6 and the connecting rod 5 to rotate, thereby collecting the motor speed and displaying the collected data on the display screen 2. The laser emitting lamp 8 is the non-contact detection method of the motor speed detection device, which can detect some fast devices that cannot be directly measured. This process requires the use of reflective stickers. The reflective stickers are attached to the output rotating end of the device under test, and the laser emitted by the laser emitting lamp 8 is aligned with the reflective stickers. When the output end of the device under test rotates, the motor speed detection device will collect and measure the light reflected by the reflective stickers, and after calculation, obtain the specific speed data, which is displayed on the display screen 2.

[0031] Reference Figures 2-5As shown, the auxiliary device 7 includes a rectangular plate 71. The outer surface of the rectangular plate 71 is slidably connected to the inner wall of the connecting rod 5. A threaded pin 72 is rotatably connected to the bottom of one side of the rectangular plate 71. The outer surface of the threaded pin 72 is threadedly connected to the inner wall of the connecting rod 5. A pin 73 is fixedly connected to the middle of the other side of the rectangular plate 71. An insertion hole 74 is opened on the outer surface of the connecting member 6. The outer surface of the pin 73 is inserted into the inner wall of the connecting rod 5 and the insertion hole 74. By setting the threaded pin 72, the threaded pin 72 can extend and retract on the inner wall of the connecting rod 5, and drive the pin 73 connected to the rectangular plate 71 to move synchronously, so that the pin 73 enters the insertion hole 74 of the connecting member 6, which facilitates the adjustment of the pin 73 from the outside of the connecting rod 5 through the threaded pin 72. A spring 7 is fixedly connected to the top of one side of the rectangular plate 71. 5. One end of the spring 75 is fixedly connected to one side of the inner wall of the connecting rod 5. A round rod 76 is provided inside the spring 75. The outer surface of the round rod 76 is slidably connected to the inner wall of the rectangular plate 71. The two ends of the round rod 76 are fixedly connected to the two sides of the inner wall of the connecting rod 5 respectively. By setting the spring 75, one end of the spring 75 is fixed to the top of the rectangular plate 71. The spring 75 is always in a compressed state in the cavity inside the connecting rod 5. The spring 75 will squeeze the top of the rectangular plate 71, thereby ensuring that the threaded pin 72 can drive the rectangular plate 71 to move towards the side of the insertion hole 74. The round rod 76 can simultaneously limit the spring 75 and the rectangular plate 71, preventing the spring 75 from bending during deformation, and making the rectangular plate 71 more stable during movement.

[0032] Reference Figures 2-5 As shown, a ring 77 is fixedly connected to the bottom of the outer surface of the connecting rod 5, and the outer surface of the threaded pin 72 is inserted into the inner wall of the round rod 76. By setting the ring 77, one side of the ring 77 can limit one end of the connector 6 and prevent one end of the connector 6 from abutting against the threaded pin 72 under the action of gravity, thus affecting the adjustment of the threaded pin 72. A locking block 78 is fixedly connected to the top of the ring 77 and the outer surface of the connecting rod 5. A slot 79 is opened at the bottom of the connector 6, and the outer surface of the locking block 78 is inserted into the inner wall of the slot 79. By setting the locking block 78 and the slot 79, after the locking block 78 is inserted into the slot 79, the pin 73 is just aligned with the insertion hole 74 on the connector 6, which facilitates the quick installation of the connector 6.

[0033] Reference Figures 4-5As shown, the protective device 9 includes a protective plate 91, which is disposed on one side of the laser emitting lamp 8. The protective plate 91 is made of transparent resin. Both ends of the protective plate 91 are fixedly connected to fixing blocks 92. One side of each fixing block 92 abuts against the two sides of the speed detector body 1. A limiting rod 93 is inserted into the inner wall of the fixing block 92. One end of the limiting rod 93 is fixedly connected to one side of the speed detector body 1. By setting the protective plate 91 made of transparent resin material, one side of the laser emitting lamp 8 can be blocked and protected without hindering the laser emitting lamp 8 from emitting laser light. This can prevent debris from directly hitting or rubbing the laser emitting lamp 8 and causing damage to the laser emitting lamp 8.

[0034] Reference Figures 4-5 As shown, a limiting groove with an open opening is provided on one side of the fixing block 92. The opening of the limiting groove is relatively wide and gradually narrows inward. The narrow end of the limiting groove is connected to a circular groove. The size and shape of the outer surface of the limiting rod 93 are adapted to the size and shape of the inner wall of the circular groove. A rubber block is provided at one end of the pin 73. The opening of the limiting groove is relatively large, which facilitates the entry of the limiting rod 93. At the same time, after the limiting rod 93 enters the circular groove, it can fix the limiting rod 93 and the fixing block 92, thereby fixing the protective plate 91. One side of the rubber block abuts against one side of the fixing block 92, which can provide auxiliary fixation between the fixing block 92 and the limiting rod 93. U-shaped blocks 94 are symmetrically fixedly connected to the top of both sides of the speed detector body 1. The outer surface of the fixing block 92 is inserted into the inner wall of the U-shaped block 94. The U-shaped block 94 can limit the fixing block 92 and prevent the protective plate 91 connected to the fixing block 92 from shaking.

[0035] Working principle: Connector 6 is fitted onto the outer surface of connecting rod 5, and the locking block 78 enters the inner wall of the slot 79. One end of connector 6 abuts against one side of ring 77. Then, the threaded pin 72 is rotated, allowing it to extend and retract within the inner wall of connecting rod 5. Under the limitation of the round rod 76, the threaded pin 72 drives the rectangular plate 71 to connect. Simultaneously, under the compression of spring 75, the top of rectangular plate 71 drives the pin 73 to move synchronously, allowing the pin 73 to enter the insertion hole 74 of connector 6. The pin 73 provides auxiliary fixation between connecting rod 5 and connector 6, thus preventing loosening of the connection between connector 6 and motor speed detection device connecting rod 5. The fixing blocks 92 at both ends of the protective plate 91 are fitted onto the outer surfaces of the two limiting rods 93 on both sides of the speed detector body 1. The fixing blocks 92 are inserted into the inner wall of the U-shaped block 94. The opening of the limiting groove is large, which facilitates the entry of the limiting rods 93. At the same time, after the limiting rods 93 enter the circular groove, they can fix the protective plate 91. One side of the rubber block abuts against one side of the fixing block 92, which can provide auxiliary fixation between the fixing block 92 and the limiting rods 93. The protective plate 91 made of transparent resin material can shield and protect one side of the laser emitting lamp 8 without hindering the laser emitting lamp 8 from emitting laser light. It can prevent debris from directly hitting or rubbing the laser emitting lamp 8 and causing damage to the laser emitting lamp 8.

Claims

1. A motor speed detection device, comprising a speed detector body (1), characterized in that: The top and bottom of one side of the speed detector body (1) are respectively provided with a display screen (2) and several operation buttons (3). Anti-slip strips (4) are glued to both sides of the speed detector body (1). A connecting rod (5) is rotatably connected to the top of the speed detector body (1). A connector (6) is sleeved on the outer surface of the connecting rod (5). A rectangular cavity is provided at the top of the connecting rod (5). An auxiliary device (7) is provided inside the connecting rod (5). The auxiliary device (7) is used to lock and fix the connecting rod (5) and the connector (6) by moving the pin (73). A laser emitting lamp (8) is symmetrically arranged on the top of the speed detector body (1). Two laser emitting lamps (8) are arranged on both sides of the connecting rod (5). A protective device (9) is provided on one side of the laser emitting lamp (8).

2. The motor speed detection device according to claim 1, characterized in that: The auxiliary device (7) includes a rectangular plate (71), the outer surface of which is slidably connected to the inner wall of the connecting rod (5), a threaded pin (72) is rotatably connected to the bottom of one side of the rectangular plate (71), the outer surface of which is threadedly connected to the inner wall of the connecting rod (5), a pin (73) is fixedly connected to the middle of the other side of the rectangular plate (71), and an insertion hole (74) is opened on the outer surface of the connector (6), and the outer surface of the pin (73) is inserted into the inner wall of the connecting rod (5) and the insertion hole (74).

3. The motor speed detection device according to claim 2, characterized in that: A spring (75) is fixedly connected to the top of one side of the rectangular plate (71). One end of the spring (75) is fixedly connected to one side of the inner wall of the connecting rod (5). A round rod (76) is provided inside the spring (75). The outer surface of the round rod (76) is slidably connected to the inner wall of the rectangular plate (71). The two ends of the round rod (76) are fixedly connected to the two sides of the inner wall of the connecting rod (5).

4. The motor speed detection device according to claim 3, characterized in that: A ring (77) is fixedly connected to the bottom of the outer surface of the connecting rod (5), and the outer surface of the threaded pin (72) is inserted into the inner wall of the round rod (76).

5. The motor speed detection device according to claim 4, characterized in that: The top of the ring (77) and the outer surface of the connecting rod (5) are fixedly connected with a locking block (78), and the bottom of the connector (6) is provided with a locking groove (79), and the outer surface of the locking block (78) is inserted into the inner wall of the locking groove (79).

6. The motor speed detection device according to claim 1, characterized in that: The protective device (9) includes a protective plate (91), which is located on one side of the laser emitting lamp (8). The protective plate (91) is made of transparent resin. Both ends of the protective plate (91) are fixedly connected to a fixing block (92). One side of the two fixing blocks (92) abuts against the two sides of the speed detector body (1). A limiting rod (93) is inserted into the inner wall of the fixing block (92). One end of the limiting rod (93) is fixedly connected to one side of the speed detector body (1).

7. The motor speed detection device according to claim 6, characterized in that: The fixed block (92) has an open-type limiting groove on one side. The opening of the limiting groove is relatively wide and gradually narrows inward. The narrow end of the limiting groove is connected to a circular groove. The size and shape of the outer surface of the limiting rod (93) are adapted to the size and shape of the inner wall of the circular groove. One end of the pin (73) is provided with a rubber block.

8. The motor speed detection device according to claim 6, characterized in that: The top of both sides of the speed detector body (1) is symmetrically fixed with U-shaped blocks (94), and the outer surface of the fixing block (92) is inserted into the inner wall of the U-shaped block (94).

Images