Liftable mounting base of schlieren instrument

Abstract

The utility model relates to a liftable mounting base of a schlieren instrument, which comprises a mounting table, a horizontal support plate and a lifting mechanism, and is technically characterized in that a longitudinal circular truncated cone is arranged in the middle of the horizontal support plate, a shaft sleeve is arranged outside the longitudinal circular truncated cone, and the longitudinal circular truncated cone is rotatably connected with a sleeve through the shaft sleeve; a driving gear meshed with the gear ring is supported on the horizontal supporting plate, a rotary driving motor is fixed to the lower surface of the horizontal supporting plate, the output end of the rotary driving motor is fixedly connected with a wheel shaft of the driving gear, a longitudinal through hole is formed in the longitudinal circular truncated cone, and an induced draft fan is fixed to the lower end of the longitudinal through hole; and a radial hole communicated with the central hole is formed in the peripheral surface of the horizontal mounting plate. According to the utility model, not only can the height of each system of the schlieren instrument be rapidly adjusted, but also the orientation of each system of the schlieren instrument can be rapidly adjusted, the adjustment precision is high, and the rapid alignment of each system of the schlieren instrument is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of Schlieren instrument installation structures, in particular to a levitation installation base of a Schlieren instrument. Background Art

[0002] Schlieren instrument is used for Schlieren test, that is, it is an optical display instrument used to observe the density change inside transparent medium. Schlieren instrument generally includes a light source system, two Schlieren reflection systems and an imaging system, each system is arranged separately and equipped with a mounting base.

[0003] For example, CN 220647539 U discloses a liftable mounting base for a Schlieren instrument, which includes a fixed platform and a mounting mechanism, wherein the mounting structure includes a lifting assembly mounted on the fixed platform and a mounting assembly arranged on the lifting assembly, wherein the lifting assembly includes two screws arranged on the platform and two lifting plates respectively connected to the two screws, and the mounting assembly includes a mounting platform and two mounting rails installed on the mounting platform. The patent drives the transmission shaft to rotate through a lifting motor, and the transmission belt installed thereon drives the two screws to rotate. Under the action of the screw holes inside the lifting plate, the lifting plate is conveniently moved up and down inside the lifting box, so that the mounting plate and the mounting platform above can be automatically lifted and lowered to complete the adjustment of the height of the Schlieren instrument. However, there are still the following problems: the weight of each system of the Schlieren instrument is heavy. Although it can be easily adjusted to lift and lower after being placed on the mounting base, it is not conducive to the staff to easily and quickly adjust the direction of the system carried, and the adjustment accuracy is low, which is not conducive to quickly aligning each system of the Schlieren instrument, and will also affect the accuracy of the Schlieren test. Utility Model Content

[0004] The purpose of the utility model is to provide a liftable mounting base of a Schlieren instrument with a reasonable structure and reliable use to solve the above-mentioned problems. Not only can the height of each system of the Schlieren instrument be quickly adjusted, but also the orientation of each system of the Schlieren instrument can be quickly adjusted with high adjustment accuracy, thereby ensuring that each system of the Schlieren instrument is quickly aligned.

[0005] The technical solution of the utility model is:

[0006] A liftable mounting base for a schlieren instrument comprises a mounting platform, a horizontal support plate, and a lifting mechanism connected between the mounting platform and the horizontal support plate, and its technical highlights are: a longitudinal truncated cone is provided in the middle of the horizontal support plate, a shaft sleeve is provided on the outside of the longitudinal truncated cone and is rotatably connected with a sleeve by means of the shaft sleeve, a horizontal mounting plate is fixed on the top of the sleeve, a gear ring is provided on the lower part of the outer wall of the sleeve, a driving gear meshing with the gear ring is supported on the horizontal support plate, a rotary drive motor is fixed on the lower surface of the horizontal support plate, an output end of the rotary drive motor is connected and fixed to the axle of the driving gear, a longitudinal through hole is provided in the longitudinal truncated cone, an induced draft fan is fixed to the lower end of the longitudinal through hole, the horizontal mounting plate is provided with a center hole connected with the longitudinal through hole, and a plurality of radial holes connected with the center hole are evenly provided on the outer peripheral surface of the horizontal mounting plate.

[0007] The liftable mounting base of the Schlieren instrument is provided with a filter at the air inlet of the induced air fan.

[0008] The above-mentioned liftable mounting base of the Schlieren instrument, the sleeve is composed of a cylindrical section fixed to the longitudinal truncated table and a flange section connected to the lower end of the cylindrical section, the lower surface of the flange section is seated on the upper surface of the horizontal support plate, the lower end surface of the sleeve is seated on the upper surface of the flange section, and the upper part of the outer wall of the sleeve is provided with an oil filling hole leading to the sleeve.

[0009] The above-mentioned liftable mounting base of the schlieren instrument, the lifting mechanism includes a cantilever frame symmetrically fixed to the left and right edges of the mounting platform, a longitudinal lead screw supported between the cantilever frame and the mounting platform, a nut arranged on a horizontal support plate and cooperating with the longitudinal lead screw, a synchronous belt transmission mechanism arranged between the lower ends of the two longitudinal lead screws, and a lifting drive motor connected to one of the longitudinal lead screws.

[0010] The liftable mounting base of the above-mentioned Schlieren instrument, the front and rear side edges of the horizontal mounting plate are respectively provided with detachable C-shaped buckles for clamping and fixing.

[0011] The liftable mounting base of the above-mentioned schlieren instrument has a longitudinal guide rail on the inner side surface of the cantilever frame, and the left and right edges of the horizontal support plate are provided with guide grooves that cooperate with the longitudinal guide rail.

[0012] The beneficial effects of the utility model are:

[0013] 1. When in use, not only can the lifting mechanism be used to drive the horizontal mounting plate to adjust the height, but the rotary drive motor can also be started as needed to drive the sleeve and the horizontal mounting plate to rotate around the center line of the sleeve through the active gear and the gear ring, so as to easily and quickly change the direction of a system in the Schlieren instrument carried on the horizontal mounting plate. Compared with manual adjustment, it not only saves time and effort, but also has high adjustment accuracy.

[0014] 2. Use an exhaust fan to introduce cool air from the external environment into the longitudinal through-holes of the horizontal support plate, then into the central hole of the horizontal mounting plate, and finally out of the horizontal mounting plate through the radial holes, so as to ensure uniform cooling of the horizontal mounting plate, thereby achieving cooling of the Schlieren instrument installed thereon. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 yes Figure 1 Middle AA section view;

[0017] Figure 3 It is a schematic diagram of the external structure of the utility model;

[0018] Figure 4 yes Figure 3 Right view of .

[0019] In the figure: 1. cantilever frame, 2. longitudinal guide rail, 3. longitudinal lead screw, 4. horizontal mounting plate, 5. removable C-shaped buckle, 6. center hole, 7. radial hole, 8. gear ring, 9. sleeve, 10. bushing, 11. induced draft fan, 12. rotary drive motor, 13. longitudinal through hole, 14. horizontal support plate, 15 oil injection hole, 16. nut, 17. synchronous belt transmission mechanism, 18. mounting table, 19. lifting drive motor, 20. driving gear. DETAILED DESCRIPTION

[0020] The utility model is described in detail according to the accompanying drawings of the specification.

[0021] like Figure 1 to Figure 4 As shown, the liftable mounting base of the schlieren instrument includes a mounting platform 18, a horizontal support plate 14, and a lifting mechanism connected between the mounting platform 18 and the horizontal support plate 14.

[0022] The middle part of the horizontal support plate 14 is provided with a longitudinal truncated cone, the outer part of the longitudinal truncated cone is provided with a sleeve 10 and is rotatably connected with a sleeve 9 by means of the sleeve 10, the top of the sleeve 9 is fixed with a horizontal mounting plate 4, the lower part of the outer wall of the sleeve 9 is provided with a gear ring 8, the horizontal support plate 14 supports a driving gear 20 meshing with the gear ring 8, the lower surface of the horizontal support plate 14 is fixed with a rotary drive motor 12, and the output end of the rotary drive motor 12 is connected and fixed with the axle of the driving gear 20. In this embodiment, the sleeve 10 is composed of a cylindrical section fixed with the longitudinal truncated cone and a flange section connected with the lower end of the cylindrical section, the lower surface of the flange section is located on the upper surface of the horizontal support plate 14, the lower end surface of the sleeve 9 is located on the upper surface of the flange section, and the upper part of the outer wall of the sleeve 9 is provided with an oil injection hole 15 leading to the sleeve 10. The front and rear edges of the horizontal mounting plate 4 are respectively provided with detachable C-shaped buckles 5 for clamping and fixing.

[0023] A longitudinal through hole 13 is provided in the longitudinal truncated cone, an exhaust fan 11 is fixed to the lower end of the longitudinal through hole 13, a central hole 6 communicating with the longitudinal through hole 13 is provided in the horizontal mounting plate 4, and a plurality of radial holes 7 communicating with the central hole 6 are evenly provided on the outer peripheral surface of the horizontal mounting plate 4. In this embodiment, a filter screen is provided at the air inlet of the exhaust fan 11.

[0024] The lifting mechanism includes a cantilever frame 1 symmetrically fixed to the left and right edges of the mounting platform 18, a longitudinal lead screw 3 supported between the cantilever frame 1 and the mounting platform 18, a screw nut 16 arranged on the horizontal support plate 14 and matched with the longitudinal lead screw 3, a synchronous belt transmission mechanism 17 arranged between the lower ends of the two longitudinal lead screws 3, and a lifting drive motor 19 connected to one of the longitudinal lead screws 3. A longitudinal guide rail 2 is provided on the inner side surface of the cantilever frame 1, and a guide groove matched with the longitudinal guide rail 2 is provided on the left and right edges of the horizontal support plate 14.

[0025] Working principle:

[0026] 1. Start the lifting drive motor 19, and drive the two longitudinal lead screws 3 to rotate synchronously in the same direction through the synchronous belt transmission mechanism 17, thereby driving the two screw nuts 16 to drive the horizontal support plate 14 to rise, so as to achieve the purpose of adjusting the height of the horizontal mounting plate 4 and a certain system of the Schlieren instrument carried thereon. 2. Start the rotation drive motor 12, and drive the sleeve 9 and the horizontal mounting plate 4 to rotate around the center line of the shaft sleeve 10 through the driving gear 20 and the gear ring 8, so as to easily and quickly change the direction of a certain system in the Schlieren instrument carried on the horizontal mounting plate 4, so that each system can be quickly aligned.

[0027] The above is a detailed description of the embodiments of the utility model, but the above contents are only preferred embodiments of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of the invention of the utility model should still fall within the scope of this patent.

Claims

1. A slewing mounting base of a schlieren instrument, comprising a mounting platform, a horizontal support plate, and a lifting mechanism connected between the mounting platform and the horizontal support plate, characterized in that: A longitudinal cone is provided at the middle part of the horizontal support plate, a shaft sleeve is provided on the outside of the longitudinal cone and is rotatably connected with a sleeve by means of the shaft sleeve, a horizontal mounting plate is fixed on the top of the sleeve, a gear ring is provided on the lower part of the outer wall of the sleeve, a driving gear meshing with the gear ring is supported on the horizontal support plate, a rotary drive motor is fixed on the lower surface of the horizontal support plate, an output end of the rotary drive motor is connected and fixed to the axle of the driving gear, a longitudinal through hole is provided in the longitudinal cone, an induced draft fan is fixed to the lower end of the longitudinal through hole, the horizontal mounting plate is provided with a center hole connected with the longitudinal through hole, and a plurality of radial holes connected with the center hole are evenly provided on the outer peripheral surface of the horizontal mounting plate.

2. The escalable mounting base of the Schlieren instrument according to claim 1, characterized in that: A filter screen is arranged at the air inlet of the induced air fan.

3. The escalable mounting base of the Schlieren instrument according to claim 1, characterized in that: The sleeve is composed of a cylindrical section fixed to the longitudinal cone and a flange section connected to the lower end of the cylindrical section. The lower surface of the flange section is located on the upper surface of the horizontal support plate, and the lower end surface of the sleeve is located on the upper surface of the flange section. The upper part of the outer wall of the sleeve is provided with an oil filling hole leading to the sleeve.

4. The escalable mounting base of the Schlieren instrument according to claim 1, characterized in that: The lifting mechanism includes a cantilever frame symmetrically fixed to the left and right edges of the mounting platform, a longitudinal lead screw supported between the cantilever frame and the mounting platform, a nut arranged on a horizontal support plate and cooperating with the longitudinal lead screw, a synchronous belt transmission mechanism arranged between the lower ends of the two longitudinal lead screws, and a lifting drive motor connected to one of the longitudinal lead screws.

5. The escalable mounting base of the Schlieren instrument according to claim 1, characterized in that: The front and rear side edges of the horizontal mounting plate are respectively provided with detachable C-shaped buckles for clamping and fixing.

6. The escalable mounting base of the Schlieren instrument according to claim 4, characterized in that: A longitudinal guide rail is arranged on the inner side surface of the cantilever frame, and guide grooves cooperating with the longitudinal guide rail are arranged on the left and right edges of the horizontal support plate.

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