Polarimeter

Abstract

The utility model belongs to the technical field of polarimeter equipment, and relates to a polarimeter which comprises a bottom plate and a polarimeter body, the polarimeter body is placed on the bottom plate, a fixing structure is arranged on the bottom plate and comprises an electric cylinder fixedly connected with one side of the bottom plate, two sides of the electric cylinder are fixedly connected with fixing blocks respectively, and the fixing blocks are fixedly connected with the bottom plate. The two fixing blocks are rotationally connected with connecting rods respectively, the two connecting rods are rotationally connected with base plates, receding holes are formed in the centers of the two base plates, a fixing rod is fixedly connected to the bottom plate, gears are fixedly connected to the outer side of the fixing rod, the two gears are meshed with racks respectively, guide grooves are formed below the racks, and guide strips in sliding connection with the guide grooves are fixedly connected to the bottom plate. Fixing plates are fixedly connected to the sides, away from the electric cylinders, of the racks; according to the utility model, the polarimeter body is stably fixed on the bottom plate by arranging the fixing structure, and the connection stability between the bottom plate and the working table is enhanced by arranging the suction cup, so that the influence on the accuracy of a detection result caused by the influence on the polarimeter when shaking is generated is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of polarimeter equipment, in particular to a polarimeter. Background Art

[0002] Polarimeter is an instrument for measuring the optical rotation of optically active substances. By measuring the optical rotation of the sample, the concentration, content and purity of the substance can be analyzed and determined. Natural light produces plane polarized light after passing through the polarizer. If the polarimeter tube contains an optically active substance, when the polarized light passes through the solution of the substance, the angle of the polarized light will rotate to the left or right by a certain angle. At this time, in order to allow the polarized light rotated by a certain angle to pass through the analyzer grating, the analyzer must be rotated by a certain angle so that it can be seen brightly at the eyepiece. This rotation angle is the optical rotation of the solution of the substance to be tested.

[0003] As a precision instrument, the polarimeter is expensive and easy to damage. If the polarimeter is not fixed firmly, the slightest shaking can easily affect the polarimeter, affecting the accuracy of the test results, affecting the progress of the experiment, and indirectly causing losses. Utility Model Content

[0004] The purpose of the utility model is to provide a polarimeter, which solves the problem that the polarimeter mentioned in the above background technology is a precision instrument, which is expensive and easy to be damaged. If the polarimeter is not fixed firmly, even a slight shaking can easily affect the polarimeter, affect the accuracy of the test results, affect the progress of the experiment, and indirectly cause losses.

[0005] To solve the above technical problems, the technical solution adopted by the utility model is a polarimeter, comprising a base plate and a polarimeter body, the polarimeter body is placed on the base plate, a fixing structure is arranged on the base plate, the fixing structure comprises an electric cylinder fixedly connected to one side of the base plate, both sides of the end of the piston rod of the electric cylinder are fixedly connected with fixing blocks respectively, connecting rods are rotatably connected to the two fixing blocks respectively, the other ends of the two connecting rods are rotatably connected to chassis respectively, avoidance holes are provided in the centers of the two chassis, a fixing rod passing through the avoidance hole is fixedly connected to the base plate, a gear is fixedly connected to the outer side of the fixing rod, the two gears are respectively meshed with racks, a guide groove is provided below the rack, a guide bar slidably connected to the guide groove is fixedly connected to the base plate, and a fixing plate is fixedly connected to the side of the rack away from the electric cylinder.

[0006] As a preferred solution, a positioning groove is provided on the bottom plate, the positioning groove is provided between two fixing plates, and the polarimeter body is arranged in the positioning groove.

[0007] As a preferred solution, a rubber strip is fixedly connected to the opposite side of the fixing plate.

[0008] As a preferred solution, a serrated groove is provided on the opposite side of the rubber strip.

[0009] As a preferred solution, a protective shell is fixedly connected to the bottom plate, the protective shell covers the fixed structure, and a notch is opened on the protective shell, and the notch corresponds to the position and size of the positioning groove.

[0010] As a preferred solution, a plurality of support rods symmetrical to the bottom plate are fixedly connected below the bottom plate, an adjustment assembly is provided at the lower end of the support rod, and a suction cup is provided at the lower end of the adjustment assembly.

[0011] As a preferred embodiment, the adjustment assembly includes a threaded hole opened at the lower end of the support rod, a screw rod is threadedly connected to the threaded hole, a mounting shell is provided below the support rod, the lower end of the screw rod is located in the mounting shell and fixedly connected to a motor, and the suction cup is fixedly connected to the lower end surface of the mounting shell.

[0012] Compared with the prior art, the beneficial effects of the utility model include:

[0013] The utility model stably fixes the polarimeter body on the bottom plate by arranging a fixing structure, and strengthens the connection stability between the bottom plate and the work table by arranging a suction cup, so as to avoid affecting the polarimeter and the accuracy of the detection result when shaking occurs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the utility model;

[0015] Figure 2 This is a schematic diagram of the specific structure of an embodiment of the utility model;

[0016] Figure 3 This is a schematic diagram of the matching structure when the polarimeter body of the utility model is fixed;

[0017] Figure 4 This is a schematic diagram of the structure of the regulating component for implementing the utility model. DETAILED DESCRIPTION

[0018] It is easy to understand that according to the technical solution of the utility model, without changing the essential spirit of the utility model, a person skilled in the art can propose a variety of interchangeable structural modes and implementation modes. Therefore, the following specific implementation modes and drawings are only exemplary descriptions of the technical solution of the utility model, and should not be regarded as the entirety of the utility model or as a limitation or restriction to the technical solution of the utility model.

[0019] The following will be combined with the instructions attached Figure 1-4 And specific implementation methods are used to describe the above technical solutions in detail:

[0020] The utility model provides a polarimeter, comprising a base plate 1 and a polarimeter body 2. The polarimeter body 2 is placed on the base plate 1. A fixing structure is provided on the base plate 1. The fixing structure comprises an electric cylinder 3 fixedly connected to one side of the base plate 1. Two sides of the piston rod end of the electric cylinder 3 are respectively fixedly connected with fixing blocks 4. Two fixing blocks 4 are respectively rotatably connected with connecting rods 5. The other ends of the two connecting rods 5 are respectively rotatably connected with chassis 6. Avoidance holes are provided in the centers of the two chassis 6. A fixing rod 7 passing through the avoidance hole is fixedly connected to the base plate 1. A gear 8 is fixedly connected to the outer side of the fixing rod 7. Two gears 8 are respectively meshed with racks 9. A guide groove is provided below the rack 9. A guide bar 11 slidably connected to the guide groove is fixedly connected to the base plate 1. A fixing plate 12 is fixedly connected to the side of the rack 9 away from the electric cylinder 3. The bottom plate 1 is placed on the workbench, and the polarimeter body 2 is fixed on the bottom plate 1 through a fixing structure. During the fixing process, the polarimeter body 2 is first placed on the bottom plate 1, and then the electric cylinder 3 is started. When the piston rod of the electric cylinder 3 is pushed outward, the fixing block 4 is driven to move together. As the fixing block 4 moves, the connecting rod 5 is driven to rotate, thereby driving the chassis 6 to rotate, and then the gear 8 starts to rotate. At this time, the rack 9 meshing with the gear 8 starts to move under the cooperation of the guide groove and the guide bar 11, thereby driving the two fixing plates 12 to move in opposite directions. At this time, the polarimeter body 2 is moved between the two fixing plates 12, and then the electric cylinder 3 is retracted, driving the connecting rod 5, the chassis 6 and the gear 8 to rotate in the opposite direction, thereby driving the rack 9 and the fixing plate 12 to move toward each other, thereby clamping and fixing the polarimeter body 2, so that the polarimeter body 2 can be stably fixed on the bottom plate 1, avoiding the influence of shaking on the polarimeter and thus affecting the accuracy of the detection result. Preferably, since the cooperation among the electric cylinder 3, the gear 8 and the rack 9 has a self-locking effect, fixing by this fixing structure is more stable than fixing by a common fixing method, such as fixing by a spring.

[0021] As a preferred embodiment, a positioning groove 13 is provided on the bottom plate 1, and the positioning groove 13 is provided between the two fixing plates 12, and the polarimeter body 2 is arranged in the positioning groove 13. When being fixed, the polarimeter body 2 will be fixed in the positioning groove.

[0022] In order to improve the fixing effect, as a preferred embodiment, a rubber strip 14 is fixedly connected to the opposite side of the fixing plate 12. The rubber strip 14 increases the friction between the fixing plate 12 and the polarimeter body 2, and also avoids the fixing plate 12 and the polarimeter body 2 from hard contact and causing surface damage.

[0023] In order to further improve the fixing effect, as a preferred embodiment, a serrated groove is provided on the opposite side of the rubber strip 14 .

[0024] Considering the overall appearance of the device, as a preferred embodiment, a protective shell 15 is fixedly connected to the bottom plate 1, and the protective shell 15 covers the fixed structure. A notch 16 is provided on the protective shell 15, and the notch 16 corresponds to the position and size of the positioning groove 13. The fixed structure is protected by the protective shell 15 to prevent external debris from affecting the fixed structure. When placing the polarimeter body 2, the polarimeter body 2 can be placed in the positioning groove 13 through the notch 16.

[0025] In order to enhance the stability of the connection between the bottom plate 1 and the work surface, as a preferred embodiment, a plurality of support rods 17 symmetrical to the bottom plate 1 are fixedly connected to the bottom of the bottom plate 1, and an adjustment component is provided at the lower end of the support rod 17, and a suction cup 18 is provided at the lower end of the adjustment component. By adsorbing the suction cup 18 on the work surface, the entire device can be fixed on the work surface to improve stability.

[0026] In order to improve versatility, as a preferred embodiment, the adjustment component includes a threaded hole 19 opened at the lower end of the support rod 17, and a screw rod 20 is connected to the threaded hole 19. A mounting shell 21 is provided below the support rod 17. The lower end of the screw rod 20 is located in the mounting shell 21 and is fixedly connected to a motor 22. The suction cup 18 is fixedly connected to the lower end surface of the mounting shell 21. When the work surface is not a horizontal surface, the motor 22 on the lower side starts to work, thereby driving the screw rod 20 to rotate. Since the support rod 17 is fixedly connected to the base plate 1, the support rod 17 threadedly connected to the screw rod 20 through the threaded hole 19 will move upward as the screw rod 20 rotates, so that the lower side of the base plate 1 can be adjusted until the upper surface of the base plate 1 is in a horizontal setting. Preferably, a level meter can be provided on the base plate 1 to determine whether the base plate 1 is horizontal.

[0027] Preferably, the polarimeter body, electric cylinder and motor mentioned above are mature existing technologies, so their structures and principles are not described here in detail. The specifications and models of the electric cylinder and motor can be selected according to actual conditions. When the circuit is connected, a wire hole is reserved by default and connected to the municipal circuit.

[0028] The standard parts used in the utility model can be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The content not described in detail in this specification belongs to the prior art known to professional and technical personnel in this field.

[0029] The technical scope of the present invention is not limited to the contents described above. Those skilled in the art can make various deformations and modifications to the above embodiments without departing from the technical concept of the present invention, and these deformations and modifications should all fall within the protection scope of the present invention.

Claims

1. A polarimeter, comprising a base plate (1) and a polarimeter body (2), characterized in that: The polarimeter body (2) is placed on a base plate (1). A fixing structure is provided on the base plate (1). The fixing structure comprises an electric cylinder (3) fixedly connected to one side of the base plate (1). The two ends of the piston rod of the electric cylinder (3) are fixedly connected to fixing blocks (4) on both sides. The two fixing blocks (4) are rotatably connected to connecting rods (5). The other ends of the two connecting rods (5) are rotatably connected to chassis (6). The centers of the two chassis (6) are provided with avoidance holes. A fixing rod (7) passing through the avoidance hole is fixedly connected to the base plate (1). A gear (8) is fixedly connected to the outer side of the fixing rod (7). The two gears (8) are respectively meshed with racks (9). A guide groove is provided below the rack (9). A guide bar (11) slidably connected to the guide groove is fixedly connected to the base plate (1). A fixing plate (12) is fixedly connected to the side of the rack (9) away from the electric cylinder (3).

2. A polarimeter according to claim 1, characterized in that: The bottom plate (1) is provided with a positioning groove (13), the positioning groove (13) is provided between two fixing plates (12), and the polarimeter body (2) is arranged in the positioning groove (13).

3. A polarimeter according to claim 1, characterized in that: A rubber strip (14) is fixedly connected to the opposite side of the fixing plate (12).

4. A polarimeter according to claim 3, characterized in that: The rubber strip (14) is provided with a sawtooth groove on one opposite side.

5. A polarimeter according to claim 1, characterized in that: A protective shell (15) is fixedly connected to the bottom plate (1), the protective shell (15) covers the fixed structure, and a notch (16) is provided on the protective shell (15), the notch (16) corresponding to the position and size of the positioning groove (13).

6. A polarimeter according to claim 1, characterized in that: A plurality of support rods (17) symmetrical with respect to the bottom plate (1) are fixedly connected below the bottom plate (1), an adjustment assembly is arranged at the lower end of the support rods (17), and a suction cup (18) is arranged at the lower end of the adjustment assembly.

7. A polarimeter according to claim 6, characterized in that: The adjustment assembly comprises a threaded hole (19) formed at the lower end of a support rod (17), a screw rod (20) being threadedly connected to the threaded hole (19), a mounting shell (21) being arranged below the support rod (17), the lower end of the screw rod (20) being located in the mounting shell (21) and being fixedly connected to a motor (22), and the suction cup (18) being fixedly connected to the lower end surface of the mounting shell (21).

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