Anti-shaking high-precision automatic polarimeter with limiting function

Abstract

The utility model relates to the technical field of polarimeters, in particular to an anti-shaking high-precision automatic polarimeter with a limiting function, which comprises a polarimeter main body, a detection cavity is arranged on the polarimeter main body, one side of the polarimeter main body close to the detection cavity is rotatably provided with a turning cover, and a support plate is fixedly connected in the detection cavity; clamping covers are arranged on the two sides of the supporting plate respectively, and a test tube body is arranged between the two clamping covers. The clamping covers are driven by the driving mechanism to clamp the two ends of the test tube body, the clamping covers can be attached to the outer walls of the two ends of the test tube through the arc-shaped grooves with the inner sides matched with the shape of the test tube to form wrapping type positioning, the axial displacement space of the test tube is directly limited, and the double fixing effects of axial limiting and radial restraining are achieved; the technical problems that a test tube of a high-precision automatic polarimeter can only exert clamping force on the test tube in the horizontal direction in the limiting process, the clamping tightness degree is different, the test tube is likely to move in the axial direction, and the error risk of measured data is increased are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to polarimeter technical field, concretely relates to a high-precision automatic polarimeter with limiting and anti-shaking. BACKGROUND

[0002] High-precision automatic polarimeter is a kind of instrument for measuring the angle of optical active substance rotating plane polarized light, and the rotation angle of the polarization plane of light when the light passes through optical active substance, this angle is related to the concentration of substance, molecular structure and the wavelength of light, and high-precision automatic polarimeter is usually equipped with automatic sampling, automatic temperature control and automatic data processing function.User only needs to place sample into polarimeter tube, and the instrument can automatically complete measurement, calculation and output the rotation angle.

[0003] Chinese authorized patent announcement No.CN221594752U discloses a kind of high-precision automatic polarimeter, including automatic polarimeter body, sample test bin and operating panel, sample test bin is set up in the inside of automatic polarimeter body, operating panel is installed on the upper side of automatic polarimeter body, test tube rack is inserted in the inside of sample test bin, test tube rack top is installed with shelter eave, shelter eave bottom is connected with sealing layer, support layer is connected in the inside of test tube rack, shelter eave both sides are provided with insertion slot, insertion slot is inserted with one end of adjusting pin, adjusting pin side is connected with connecting spring.The utility model can guarantee the precision of automatic polarimeter body measurement.

[0004] In the above patent, the test tube limiting of the high-precision automatic polarimeter relies on the cooperation of a single set of clamping plates and threaded adjusting rods, which can only exert clamping force on the test tube from the horizontal direction, easily causing the test tube to move along the axial direction, thereby affecting the stability of the light path of polarized light passing through the sample, increasing the risk of measurement data error, and the limiting adjustment of the high-precision automatic polarimeter requires manual rotation of the rotating disc at the shelter eave, which can easily cause differences in clamping tightness of different test tubes due to uneven manual adjustment force, reducing work efficiency and failing to meet the efficient detection requirements, therefore, we propose a high-precision automatic polarimeter with limiting and anti-shaking. UTILITY MODEL CONTENTS

[0005] To solve the above problems, a high-precision automatic polarimeter with limiting and anti-shaking is provided, which clamps the two ends of the test tube body through the drive mechanism and the clamping cover. The clamping cover can fit the arc-shaped groove on the inner side of the test tube shape, wrap around the outer wall of the two ends of the test tube to form a wrapping type positioning, directly limit the displacement space of the test tube along the axial direction, form the double fixing effect of axial limiting and radial constraint, solve the technical problems that the test tube limiting of high-precision automatic polarimeter can only exert clamping force on the test tube from the horizontal direction, and the clamping tightness exists difference, easily causing the test tube to move along the axial direction, increasing the risk of measurement data error.

[0006] To solve the prior art problems, the utility model provides a kind of high-precision automatic polarimeter with limiting anti-shaking, including polarimeter main body, detection cavity is provided on polarimeter main body, rotatably be provided with the flap of the side of detection cavity close to polarimeter main body, fixedly connected with support plate in detection cavity;Two sides of support plate are respectively provided with clamp cover, test tube main body is arranged between the two clamp covers, arc slot that is adapted to the shape of the two ends of test tube main body is formed in the inner side of clamp cover, flexible silica gel pad is adhered to the inner wall of arc slot;Driving mechanism for driving clamp cover to realize displacement on the both sides of support plate is arranged between flap and clamp cover;Stop component for locking the position of clamp cover after displacement is provided on driving mechanism.

[0007] Preferably, the driving mechanism includes a displacement assembly, a transmission assembly and a guide assembly; the displacement assembly is arranged in the detection cavity and is used to assist the clamp cover to realize opposite displacement; the transmission assembly is arranged between the flap and the displacement assembly and is used to transmit power generated by the rotary motion of the flap to the displacement assembly; the guide assembly is arranged between the clamp cover and the displacement assembly and is used to assist the clamp cover to realize linear movement.

[0008] Preferably, the displacement assembly includes a connecting rod and two curved grooves; the connecting rod is rotatably arranged in the detection cavity; the two curved grooves are respectively formed at the two ends of the connecting rod, and the rotation directions of the two curved grooves are opposite.

[0009] Preferably, a sliding block is slidably arranged in the curved groove, a connecting plate is slidably sleeved on the outer side of the sliding block close to the connecting rod, the inner side of the connecting plate is fixedly connected with the sliding block, and the outer side of the clamp cover on the side away from the sliding block is fixedly connected with the connecting plate.

[0010] Preferably, the guide assembly includes a guide seat and a guide rail; the guide seat is fixedly connected to the middle part of the connecting plate; the guide rail is fixedly installed on the side of the detection cavity close to the connecting plate, and the guide rail and the guide seat are in sliding fit.

[0011] Preferably, the stop component includes a toothed disc, a toothed plate and a power piece; the toothed disc is fixedly connected to the top end of the connecting rod; the toothed plate is engaged with the toothed disc; the power piece is fixedly installed on the side of the detection cavity close to the toothed plate, and the output end of the power piece is fixedly connected with the toothed plate.

[0012] Preferably, a telescopic piece is fixedly connected between the toothed plate and the detection cavity, the telescopic piece is used to assist the toothed plate to realize linear displacement, and the telescopic piece is composed of inner and outer connecting rods which are mutually sleeved and relatively slidable.

[0013] The utility model has the beneficial effects compared with the prior art:

[0014] 1. The drive mechanism drives the clamp to hold both ends of the test tube body. The clamp can fit the outer wall of both ends of the test tube through the arc groove on the inner side that adapts to the shape of the test tube, forming a wrap-around positioning. This directly restricts the axial displacement space of the test tube, forming a dual fixing effect of axial limiting and radial constraint. This solves the technical problem that the test tube limiting of the high-precision automatic polarimeter can only apply clamping force to the test tube from the horizontal direction, and the clamping tightness is different, which can easily cause the test tube to move along the axial direction, increasing the risk of measurement data error.

[0015] 2. By restricting the rotational freedom of the flip cover through the stop component, the flip cover is prevented from rotating in the opposite direction due to equipment vibration, external force contact, or the inherent gaps in the mechanism. This avoids the test tube displacement caused by the loosening of the clamp. It solves the technical problem of test tube displacement, optical path deviation, and decreased measurement accuracy caused by the unexpected rotation of the flip cover during the measurement process of a high-precision automatic polarimeter. Attached Figure Description

[0016] Figure 1 This utility model application presents a three-dimensional schematic diagram of the polarimeter body and flip cover of a high-precision automatic polarimeter with limit and anti-shaking features;

[0017] Figure 2 This utility model application presents a three-dimensional schematic diagram of the flip cover and support plate of a high-precision automatic polarimeter with limiting and anti-shaking features;

[0018] Figure 3 This is a three-dimensional schematic diagram of the support plate and connecting rod of a high-precision automatic polarimeter with limiting and anti-shaking features, as per this utility model application.

[0019] Figure 4 This utility model application presents a three-dimensional schematic diagram of the clamp and connecting rod of a high-precision automatic polarimeter with limiting and anti-shaking features;

[0020] Figure 5 yes Figure 2 Enlarged view of point A in the middle;

[0021] Figure 6 yes Figure 3 Enlarged diagram of point B in the middle.

[0022] The following components are labeled in the diagram: 1. Polarimeter body; 11. Detection chamber; 12. Flip cover; 2. Support plate; 21. Clamp; 22. Transmission assembly; 23. Connecting rod; 24. Curved groove; 25. Slider; 26. Connecting plate; 27. Guide seat; 28. Guide rail; 29. ​​Gear disc; 210. Gear plate; 211. Power component; 212. Telescopic component; 3. Test tube body. Detailed Implementation

[0023] In order to further understand the features, technical means and specific purposes and functions achieved by the utility model, the utility model will be described in further detail below in combination with the drawings and specific embodiments.

[0024] Referring to Figures 1-4 As shown in the figure, a kind of high-precision automatic polarimeter with limiting anti-shaking, including polarimeter main body 1, detection cavity 11 is provided on polarimeter main body 1, rotatably arranged with the cover 12 of one side of polarimeter main body 1 close to detection cavity 11, fixedly connected with support plate 2 in detection cavity 11;Two sides of support plate 2 are provided with clamp cover 21, test tube main body 3 is arranged between two clamp covers 21, arc-shaped groove that is adapted to the shape of the two ends of test tube main body 3 is formed in the inner side of clamp cover 21, and flexible silica gel pad is bonded on the inner wall of arc-shaped groove;Drive mechanism for driving clamp cover 21 to realize displacement on the both sides of support plate 2 is arranged between cover 12 and clamp cover 21;Stop component for locking the position of clamp cover 21 after displacement is arranged on drive mechanism.

[0025] Specifically, when clamp cover 21 wraps and clamps the two ends of test tube main body 3, flexible silica gel pad can form flexible contact with the outer wall of test tube, and by the elastic deformation of silica gel material, it is adhered to the surface of test tube, which not only realizes flexible clamping of the two ends of test tube main body 3 to avoid damage to test tube caused by rigid contact, but also enhances the friction between clamp cover 21 and test tube through the high friction coefficient of silica gel material, further limits the displacement of test tube and improves the clamping stability.

[0026] When high-precision automatic polarimeter is put into use, cover 12 is pulled to rotate and open around the rotating shaft. The power generated during the rotation of cover 12 is transmitted to drive mechanism, and after receiving the power, drive mechanism drives two clamp covers 21 to move towards each other along the preset trajectory and away from support plate 2, at which time the staff can directly place test tube main body 3 on the preset support position of support plate 2.

[0027] After placing test tube main body 3, close cover 12, and through transmission structure, cover 12 transmits rotary power to drive mechanism again, and drive mechanism drives two clamp covers 21 to move towards each other and close to support plate 2, so that clamp cover 21 gradually approaches and clamps test tube main body 3. When clamp cover 21 forms wrapping and clamping on the two ends of test tube main body 3, flexible silica gel pad on the inner side of clamp cover 21 forms flexible contact with the outer wall of test tube, which on the one hand realizes flexible clamping of the two ends of test tube main body 3 to avoid damage to test tube caused by rigid contact, and on the other hand enhances the friction between clamp cover 21 and test tube through the high friction coefficient of silica gel material, improves the clamping stability, and ensures that test tube main body 3 is stably positioned in detection cavity 11 without shaking and deviation.

[0028] After the clamping cover 21 completes the clamping positioning of the test tube main body 3, the rotation freedom of the flip cover 12 is limited by the stop assembly to prevent the flip cover 12 from rotating in the opposite direction due to equipment operation vibration, external force touch or mechanism itself gap. The clamping pressure of the clamping cover 21 on the test tube main body 3 is kept constant to avoid the test tube displacement caused by the loosening of the clamping cover 21, and to ensure that the test tube is always in a stable clamping state during the entire measurement process; at the same time, the relative position of the test tube axis and the optical path reference line of the polarimeter can be fixed to avoid the optical path deviation caused by the rotation of the flip cover 12, reduce the optical path fluctuation when the polarized light passes through the sample, reduce the measurement data error caused by the optical path deviation, and ensure the accuracy and repeatability of the detection results.

[0029] Referring to Figure 2 , Figure 3 , Figure 5 and Figure 6 , the driving mechanism includes a displacement assembly, a transmission assembly 22 and a guide assembly; the displacement assembly is arranged in the detection cavity 11, and is used to assist the clamping cover 21 to realize relative displacement; the transmission assembly 22 is arranged between the flip cover 12 and the displacement assembly, and is used to transmit the power generated by the rotation of the flip cover 12 to the displacement assembly; the guide assembly is arranged between the clamping cover 21 and the displacement assembly, and is used to assist the clamping cover 21 to realize linear movement; the displacement assembly includes a connecting rod 23 and two curved grooves 24; the connecting rod 23 is rotatably arranged in the detection cavity 11; the two curved grooves 24 are respectively arranged at the two ends of the connecting rod 23, and the rotation directions of the two curved grooves 24 are opposite; a sliding block 25 is slidably arranged in the curved groove 24; a connecting plate 26 is slidably sleeved on the outer side of the connecting rod 23 close to the sliding block 25, the inner side of the connecting plate 26 is fixedly connected with the sliding block 25, and the side of the connecting plate 26 away from the sliding block 25 is fixedly connected with the outer side of the clamping cover 21; the guide assembly includes a guide seat 27 and a guide rail 28; the guide seat 27 is fixedly connected to the middle part of the connecting plate 26; the guide rail 28 is fixedly installed on the side of the detection cavity 11 close to the connecting plate 26, and the guide rail 28 and the guide seat 27 are in sliding fit.

[0030] Specifically, the transmission assembly 22 is composed of two gears and a toothed belt which are meshed with each other, the gear of the transmission assembly 22 is rotatably arranged on the polarimeter main body 1, one gear of the transmission assembly 22 is fixedly connected with the rotating shaft of the flip cover 12, and the other gear is fixedly connected with the connecting rod 23. The curved groove 24 and the sliding block 25 form a sliding guide pair. The guide seat 27 and the guide rail 28 form a sliding guide pair.

[0031] When the operator opens the flip cover 12, the rotating shaft of the flip cover 12 drives the gear on one side of the transmission component 22 to rotate. The transmission component 22 consists of two meshing gears and a toothed belt, and the gears are rotatably mounted on the preset mounting position of the polarimeter body 1 through bearings. One gear is fixedly connected to the rotating shaft of the flip cover 12, and the other gear is fixedly connected to the connecting rod 23. Based on the meshing transmission relationship between the gear and the toothed belt, the rotating shaft of the flip cover 12 can drive the connecting rod 23 to rotate synchronously through the transmission component 22. The curved groove 24 opened on the connecting rod 23 rotates synchronously with the rotation of the connecting rod 23.

[0032] The curved groove 24 and the slider 25 form a sliding guide pair. When the curved groove 24 rotates, the groove wall of the curved groove 24 makes sliding contact with the slider 25 and applies axial compressive force to the slider 25, causing the slider 25 to drive the clamp 21 to move in a preset direction through the connecting plate 26. At the same time, the connecting plate 26 drives the guide seat 27 to slide along the guide rail 28. The guide seat 27 and the guide rail 28 form a sliding guide pair, which can limit the movement trajectory of the connecting plate 26, prevent the slider 25 from causing the connecting plate 26 to rotate and deviate, and ensure that the connecting plate 26 stably drives the clamp 21 away from the support plate 2 in a straight line.

[0033] At this time, the staff places the test tube body 3 in the preset support position of the support plate 2, and then closes the flip cover 12. The rotating shaft of the flip cover 12 drives the gear of the transmission component 22 to rotate in the opposite direction. Through the meshing transmission of the transmission component 22, the connecting rod 23 is driven to rotate in the opposite direction. During the reverse rotation of the connecting rod 23, the curved groove 24 applies a reverse squeezing force to the slider 25, so that the slider 25 drives the clamp 21 to approach the support plate 2 in a straight line through the connecting plate 26, and finally achieves the precise docking of the clamp 21 and the test tube body 3.

[0034] See Figure 5 and Figure 6 As shown, the stop assembly includes a gear disc 29, a gear plate 210, and a power component 211; the gear disc 29 is fixedly connected to the top end of the connecting rod 23; the gear plate 210 meshes with the gear disc 29; the power component 211 is fixedly installed on the side of the detection chamber 11 near the gear plate 210, and the output end of the power component 211 is fixedly connected to the gear plate 210; a telescopic component 212 is fixedly connected between the gear plate 210 and the detection chamber 11, and the telescopic component 212 is used to assist the gear plate 210 in achieving linear displacement. The telescopic component 212 is composed of inner and outer connecting rods that are interlocked and can slide relative to each other.

[0035] Specifically, the power component 211 is preferably an electric telescopic rod. The inner connecting rod of the telescopic component 212 is fixedly connected to the toothed plate 210, and the outer connecting rod of the telescopic component 212 is fixedly connected to the detection cavity 11.

[0036] After the clamp 21 completes the clamping and positioning of the test tube body 3, the power component 211 is activated. The output end of the power component 211 outputs power and drives the toothed plate 210 to move up vertically.

[0037] The telescopic part 212 is composed of an inner connecting rod and an outer connecting rod which are sleeved and relatively slidable, wherein the inner connecting rod of the telescopic part 212 is fixedly connected with the tooth plate 210, and the outer connecting rod is fixedly connected with the inner wall of the detection cavity 11; during the moving of the tooth plate 210, the telescopic part 212 realizes synchronous telescoping through the relative sliding of the inner and outer connecting rods, simultaneously forms guiding constraint to the movement track of the tooth plate 210, prevents the tooth plate 210 from rotating deviation, and ensures that the tooth plate 210 stably forms meshing butt joint with the tooth disc 29.

[0038] The tooth disc 29 cannot rotate under the limiting action of the tooth plate 210, after the meshing butt joint is completed, the tooth disc 29 can transmit its rotation constraint state to the flip cover 12 through the transmission assembly 22, limits the rotation freedom degree of the flip cover 12, makes the flip cover 12 keep stable closed state, and avoids the unexpected rotation of the flip cover 12.

[0039] Working principle: when the high-precision automatic polarimeter is put into use, the flip cover 12 is pulled to rotate and open around the rotating shaft, simultaneously the two clamping covers 21 move towards each other along the preset track and away from the support plate 2, the test tube main body 3 is placed on the upside of the support plate 2, then the flip cover 12 is closed, the two clamping covers 21 move towards each other and close to the support plate 2 to clamp the test tube main body 3, finally the power part 211 is started, the output end of the power part 211 drives the tooth plate 210 to move upwards and mesh with the tooth disc 29, the tooth disc 29 cannot rotate under the limiting action of the tooth plate 210, so that the flip cover 12 is stably closed.

[0040] The above embodiments only express one or several embodiments of the present application, the description is more specific and detailed, but it cannot be understood as the limitation of the scope of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A high-precision automatic polarimeter with a limit anti-shaking, comprising a polarimeter main body (1), a detection cavity (11) is arranged on the polarimeter main body (1), a flip cover (12) is rotatably arranged on one side of the polarimeter main body (1) close to the detection cavity (11), characterized in that: The detection cavity (11) is fixedly connected with a support plate (2); two clamping covers (21) are arranged on the two sides of the support plate (2), and a test tube main body (3) is arranged between the two clamping covers (21); an arc-shaped groove matched with the shape of the two ends of the test tube main body (3) is formed in the inner side of the clamping cover (21), and a flexible silica gel pad is bonded to the inner wall of the arc-shaped groove; a driving mechanism for driving the clamping cover (21) to realize displacement on the two sides of the support plate (2) is arranged between the flip cover (12) and the clamping cover (21); and a stop component for locking the position of the clamping cover (21) after displacement is arranged on the driving mechanism. ​ 2. The high-precision automatic polarimeter with limit and anti-shaking according to claim 1, characterized in that, The driving mechanism comprises a displacement component, a transmission component (22) and a guide component; the displacement component is arranged in the detection cavity (11) and is used for assisting the clamping cover (21) to realize opposite displacement; the transmission component (22) is arranged between the flip cover (12) and the displacement component and is used for transmitting power generated by the rotary motion of the flip cover (12) to the displacement component; and the guide component is arranged between the clamping cover (21) and the displacement component and is used for assisting the clamping cover (21) to realize linear movement.

3. The high-precision automatic polarimeter with limit and anti-shaking according to claim 2, characterized in that, The displacement component comprises a connecting rod (23) and two curved grooves (24); the connecting rod (23) is rotatably arranged in the detection cavity (11); and the two curved grooves (24) are respectively formed at the two ends of the connecting rod (23), and the rotation directions of the two curved grooves (24) are opposite.

4. The high-precision automatic polarimeter with limit and anti-shaking according to claim 3, characterized in that, A sliding block (25) is slidably arranged in the curved groove (24), a connecting plate (26) is slidably sleeved on the outer side of the connecting rod (23) close to the sliding block (25), the inner side of the connecting plate (26) is fixedly connected with the sliding block (25), and the side of the connecting plate (26) away from the sliding block (25) is fixedly connected with the outer side of the clamping cover (21).

5. The high-precision automatic polarimeter with limit and anti-shaking according to claim 2, characterized in that, The guide component comprises a guide seat (27) and a guide rail (28); the guide seat (27) is fixedly connected to the middle part of the connecting plate (26); the guide rail (28) is fixedly installed on the side of the detection cavity (11) close to the connecting plate (26), and the guide rail (28) is in sliding fit with the guide seat (27).

6. The high-precision automatic polarimeter with limit and anti-shaking according to claim 3, characterized in that, The stop component comprises a toothed disc (29), a toothed plate (210) and a power piece (211); the toothed disc (29) is fixedly connected to the top end of the connecting rod (23); the toothed plate (210) is in mesh with the toothed disc (29); and the power piece (211) is fixedly installed on the side of the detection cavity (11) close to the toothed plate (210), and the output end of the power piece (211) is fixedly connected with the toothed plate (210).

7. The high-precision automatic polarimeter with limit and anti-shaking according to claim 6, characterized in that, A telescopic piece (212) is fixedly connected between the toothed plate (210) and the detection cavity (11), and the telescopic piece (212) is used for assisting the toothed plate (210) to realize linear displacement; the telescopic piece (212) is composed of inner and outer connecting rods which are sleeved with each other and can slide relative to each other.

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