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Turnover mechanism

A technology of flipping mechanism and rotating shaft, which is used in measuring devices, material analysis by optical means, instruments, etc., can solve problems such as excessive flipping angle, inaccurate positioning, and error in motor operation, and achieves reduction in volume and Cost, stable operation effect

Inactive Publication Date: 2008-10-15
FOCUSED PHOTONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The structure of the turning mechanism is complicated, and it needs a device to control the working time of the motor, such as a control circuit, and a reducer, etc.; when a large-power motor is required, the volume is large and the cost is high; There will be errors, resulting in inaccurate positioning, and with the aging of electrical components, the errors will become larger and larger, and calibration will be required after a certain period of time, which shows that the operation is not stable enough and the reliability is low; at the same time, a special limit device is required. Avoid too large turning angle of the turning plate; after the motor is used for positioning, the difficulty of explosion-proof design is increased, and the explosion-proof function needs to be realized in fields such as tobacco detection

Method used

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Experimental program
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Effect test

Embodiment 1

[0048] Such as image 3 , Figure 4 , Figure 5 As shown, a turning mechanism is used in an infrared detection instrument, including a driving device 1 , a rotating device and a turning plate 5 . The rotating device is composed of a rotating arm 2 , a rotating shaft 3 and a first limiting groove 4 . The turning plate 5 is installed on the rotating shaft 3 and remains relatively fixed; the rotating arm 2 is fixedly installed on the rotating shaft 3; the two ends of the rotating shaft 3 are located at the first vertical limit In the groove 4; the driving device 1 is installed horizontally, and the present embodiment adopts a cylinder, wherein the telescopic arm 11 is movably connected with the rotating arm 2, such as a hinge connection.

[0049]The vertical distance from the connecting point between the rotating arm 2 and the telescopic arm 11 to the rotating shaft 3 is 1. Since the turning plate 5 is installed on the rotating shaft 3, the turning plate 5 and the rotating sha...

Embodiment 2

[0055] Such as Image 6 , Figure 7 , Figure 8 As shown, an overturning mechanism is used in infrared detection instruments. The difference from the overturning mechanism in Embodiment 1 is that the overturning mechanism also includes a horizontally installed second limiting groove 6, and the telescopic arm 11 is connected to the The connection between the rotating arms 2 is also provided with a limiter 12, and the two ends of the limiter 12 are located in the second limiter groove 6, which ensures that the telescopic arm 11 only moves linearly in the horizontal direction. The service life of the driving device 1 is prolonged.

[0056] The vertical distance from the connecting point of the rotating arm 2 and the telescopic arm 11 to the rotating shaft 3 is 1, and the range of the included angle α between the plane where the rotating arm 2 and the rotating shaft 3 are located and the turning plate 5 is (90 °, 180°), while also satisfying: cot α ...

Embodiment 3

[0063] Such as Figure 9 As shown, a turning mechanism is used to turn the object over 180°. The difference from the turning mechanism in Embodiment 2 is that in this embodiment, γ is 97°, and β=7°, that is, the turning plate 5 starts from Flip 97° in the horizontal direction, satisfying the condition α∈(90°, 180°), cot α ≥ - 1 + sin β cos β , The range of the included angle α for α-β>90° is (97°, 138.5°], and the included angle α is 138° in this embodiment.

[0064] The vertical distance from the connection point between the rotating arm 2 and the telescopic arm 11 to the plane where the bottom end 42 of the first limiting groove 4 is located is lcos[180°-(α-β)]. This design ensures that when When the two ends of the rotating shaft 3 move to the bottom end 42 in the first limiting groove 4, t...

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Abstract

The invention discloses a turnover mechanism, which comprises a drive set, a rotating device and a turnover piece, wherein, the rotating device consists of a rotary shaft, a rotary arm which is fixedly connected with the rotary shaft, and a first limit groove in which the rotary shaft performs translational motion and rotational motion; the turnover piece is arranged on the rotary shaft; a telescopic arm in the drive set is movably connected with one end of the rotary arm; the range of an included angle alpha between a plane in which the rotary arm and the rotary shaft are positioned and a plane in which the turnover piece and the rotary shaft are positioned is between 90 DEG and 180 DEG. The mechanism has the advantages of simple structure, stable operation, accurate positioning, high reliability, small volume, low cost and easy realization of the explosion prevention function.

Description

technical field [0001] The invention relates to an overturning mechanism, in particular to an overturning mechanism with simple structure and accurate positioning. Background technique [0002] The turning mechanism is used in many fields, such as turning objects over 180°, or in infrared detection instruments, which are widely used in the detection of tobacco, fruits, medicines, etc. [0003] A widely used infrared detection instrument at present, such as figure 1 , figure 2 As shown, it includes a light source 21, a light receiving device 23, a standard reflector 25 and an analysis unit. When the analytical instrument is working, at first the reference spectrum will be obtained, such as figure 2 As shown, the light emitted by the light source 21 shines on the standard reflector 25 installed on the turnover plate 24, and the light receiving device 23 receives the reflected light, so as to obtain the reference spectrum. When measuring, the flap 24 will be removed, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/13
Inventor 孙敬文
Owner FOCUSED PHOTONICS
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