CN220542928U - Lubricating oil foam characteristic tester - Google Patents

Abstract

The utility model discloses a foam characteristic tester for lubricating oil, which relates to the field of lubricating oil detection equipment and comprises a foam characteristic tester, wherein a base is arranged on the foam characteristic tester, two connecting blocks are symmetrically arranged on the bottom side of the base, the two connecting blocks are rotatably provided with the same connecting shaft, an adjusting box is fixedly arranged on the connecting shaft, and a sliding plate is slidably arranged on the inner wall of the adjusting box. According to the utility model, through the arrangement of the structures such as the sliding plate, the linkage rod, the adjusting box and the like, the foam property measuring instrument is placed on the tabletop when the foam property measuring instrument is used, if the tabletop is inclined, the movable toothed plate can be overturned to release the restriction on the knob, then the knob is turned to realize the effect of adjusting the angle between the base and the foam property measuring instrument so as to adjust the foam property measuring instrument to be horizontal, so that the liquid in the foam property measuring instrument can be kept in a horizontal state, the quick leveling is realized, the position of the table or the measuring instrument is not required to be repeatedly adjusted, and the accuracy of a test result is ensured.

Description

Lubricating oil foam characteristic tester

Technical Field

The utility model relates to the technical field of lubricating oil detection equipment, in particular to a lubricating oil foam characteristic tester.

Background

The foam property tester of lubricating oil is a commonly used laboratory instrument, and can be used for testing and evaluating the foam property of lubricating oil.

In the prior art, when the lubricating oil foam characteristic tester measures lubricating oil, the lubricating oil needs to be poured into a measuring cylinder and put into the tester, and the measured liquid capacity is strictly required, if the tabletop of the tester is not flat, the measured liquid level is inclined, so that a worker can judge the liquid capacity in a wrong way, and the measured result is deviated, therefore, the placing position of a table or the tester needs to be adjusted to level during testing, the process is complicated, the measuring cylinder and other parts of the tester are made of glass materials, and the tester is easy to damage if colliding with other objects in the transportation process, so that the lubricating oil foam characteristic tester is required to meet the demands of people.

Disclosure of Invention

The utility model aims to provide a lubricating oil foam characteristic measurer, which solves the problems that in the background technology, if a tabletop placed by the measurer is uneven, the measured liquid level is inclined, and the capacity of liquid is wrongly judged by staff, so that the measured result is deviated, the placing position of the table or the measurer is required to be adjusted for leveling during testing, the process is complicated, and a measuring cylinder and other parts of the measurer are made of glass materials, and the measurer is easy to damage if collided with other objects during transportation.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a lubricating oil foam characteristic tester, includes the foam characteristic tester, be equipped with the base on the foam characteristic tester, two connecting blocks are installed to the downside symmetry of base, rotate on two connecting blocks and install same connecting axle, fixed mounting has the regulation box on the connecting axle, the inner wall slidable mounting of regulation box has the sliding plate, equal fixed mounting has two linkage pieces on sliding plate and the base, it installs same gangbar to rotate on two linkage pieces that are located same one side, install regulation structure on the sliding plate, one side symmetry fixed mounting of regulation box has two fixed blocks, fixed mounting has same pivot on two fixed blocks, install limit structure in the pivot, install protective structure on the regulation box.

Preferably, the adjusting structure comprises a screw rod, the screw rod is rotatably arranged on the adjusting box, a knob is fixedly arranged at one end of the screw rod, a threaded hole is formed in the sliding plate, and screw threads are arranged in the threaded hole.

Preferably, the linkage rod is provided with two linkage holes, the two linkage holes are internally provided with linkage shafts in a rotating mode, and the two linkage shafts are respectively and fixedly arranged on one sides of the two linkage blocks.

Preferably, the inner walls of the two sides of the adjusting box are provided with horizontal sliding grooves, the two horizontal sliding grooves are internally provided with horizontal sliding blocks in a sliding manner, and the two horizontal sliding blocks are respectively and fixedly arranged on the two sides of the sliding plate.

Preferably, the limiting structure comprises a movable toothed plate, the movable toothed plate is rotatably arranged on the rotating shaft, a limiting toothed ring is fixedly sleeved on the knob, and the limiting toothed ring is meshed with the movable toothed plate.

Preferably, the movable toothed plate is provided with a rotating hole, the rotating shaft is rotatably arranged in the rotating hole, a first torsion spring is fixedly sleeved on the rotating shaft, one end of the first torsion spring is fixedly arranged on the inner wall of the rotating hole, and the other end of the first torsion spring is fixedly arranged on the rotating shaft.

Preferably, the protection structure comprises a protection shell, the protection shell is movably mounted on the adjusting box, two connecting bars are symmetrically and fixedly mounted on one side of the protection shell, a movable cover plate is rotatably mounted on the two connecting bars, two fixing bars are symmetrically and fixedly mounted on the top side of the protection shell, two limiting grooves are formed in the two fixing bars, limiting turntables are rotatably mounted in the four limiting grooves, one movable rod is fixedly mounted on the two limiting turntables on the same side, and a baffle is fixedly mounted on one side of the two movable rods.

Preferably, the movable hole has been seted up to the inner wall of fixed strip, and the movable rod rotates to be installed in the movable hole, has fixedly sleeved with the second torsional spring on the movable rod, and the one end fixed mounting of second torsional spring is on the inner wall in movable hole, and the other one end fixed mounting of second torsional spring is on the movable rod, and spacing spout has all been seted up to the both sides inner wall of protecting crust, and equal slidable mounting has spacing in two spacing spouts, and two equal fixed mounting of spacing are on the regulating box.

The beneficial effects of the utility model are as follows:

according to the utility model, through the arrangement of the structures such as the sliding plate, the linkage rod, the adjusting box and the like, the foam property measuring instrument is placed on the tabletop when the foam property measuring instrument is used, if the tabletop is inclined, the movable toothed plate can be overturned to release the restriction on the knob, then the knob is turned to realize the effect of adjusting the angle between the base and the foam property measuring instrument so as to adjust the foam property measuring instrument to be horizontal, so that the liquid in the foam property measuring instrument can be kept in a horizontal state, the quick leveling is realized, the position of the table or the measuring instrument is not required to be repeatedly adjusted, and the accuracy of a test result is ensured.

According to the utility model, the foam property measuring instrument can be wrapped by the protective shell and the movable cover plate through the arrangement of the protective shell, so that the foam property measuring instrument is prevented from contacting or colliding with other objects in the process of transporting the foam property measuring instrument, a protective effect is provided for the foam property measuring instrument, the foam property measuring instrument is prevented from being damaged in the transportation process, and the foam property measuring instrument can be prevented from falling ash in the process of placing the foam property measuring instrument.

Drawings

FIG. 1 is a schematic diagram of a lubricating oil foam property measuring device according to the present utility model;

FIG. 2 is a schematic view showing a partial structure of a lubricating oil foam property measuring apparatus according to the present utility model;

FIG. 3 is a schematic view showing the internal structure of a regulating box part of a lubricating oil foam property measuring apparatus according to the present utility model;

FIG. 4 is a schematic cross-sectional view of a sliding plate portion of a lubricating oil foam property measuring apparatus according to the present utility model;

FIG. 5 is a schematic view showing the structure of the portion A in FIG. 4 of a lubricating oil foam property measuring apparatus according to the present utility model;

fig. 6 is a schematic cross-sectional view of a fixing bar portion of a lubricating oil foam property measuring apparatus according to the present utility model.

In the figure: 100. a foam property meter; 101. a base; 200. a connecting block; 201. a connecting shaft; 202. a sliding plate; 203. a linkage block; 204. a linkage rod; 205. a screw rod; 206. a knob; 207. a threaded hole; 208. a linkage hole; 209. a linkage shaft; 210. a horizontal chute; 211. a horizontal slider; 212. an adjustment box; 300. a fixed block; 301. a rotating shaft; 302. a movable toothed plate; 303. a limiting toothed ring; 304. a rotation hole; 305. a first torsion spring; 400. a protective shell; 401. a connecting strip; 402. a removable cover; 403. a fixing strip; 404. a limiting groove; 405. limiting the turntable; 406. a movable rod; 407. a baffle; 408. a movable hole; 409. a second torsion spring; 410. limiting sliding grooves; 411. and a limit strip.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Referring to fig. 1 to 6, a foam property measuring apparatus for lubricating oil, comprising a foam property measuring apparatus 100, a base 101 provided on the foam property measuring apparatus 100, two connection blocks 200 symmetrically provided on the bottom side of the base 101, one connection shaft 201 rotatably provided on the two connection blocks 200, an adjusting box 212 fixedly provided on the connection shaft 201, a sliding plate 202 slidingly provided on the inner wall of the adjusting box 212, two linkage blocks 203 symmetrically provided on the sliding plate 202 and the base 101, one linkage rod 204 rotatably provided on the two linkage blocks 203 on the same side, an adjusting structure provided on the sliding plate 202, two fixing blocks 300 symmetrically provided on one side of the adjusting box 212, one rotation shaft 301 fixedly provided on the two fixing blocks 300, a limit structure provided on the rotation shaft 301, a protective structure provided on the adjusting box 212, two baffle plates 407 capable of being turned over when the foam property measuring apparatus 100 is required to be transported, when the movable plate 407 rotates, the movable rod 406 is driven to rotate in the movable hole 408 on the fixed bar 403, so that the overturning effect is realized, the movable rod 406 rotates and simultaneously compresses the second torsion spring 409 and drives the two limiting turntables 405 to rotate in the two limiting grooves 404 respectively, further, the movable rod 406 is prevented from shifting, the movable plate 407 is continuously rotated to keep away from the folding of the protective shell 400, then the movable cover plates 402 on two sides are overturned, the movable cover plates 402 rotate on the connecting bar 401, the protective shell 400 is continuously overturned to be closed by the connecting bar 401, then the movable plate 407 is loosened, at the moment, the compressed second torsion spring 409 drives the movable rod 406 to rotate and reset, so that the movable rod 406 which rotates and resets drives the movable plate 407 to overturn and reset, the movable cover plates 402 are blocked, the movable cover plates 402 are prevented from overturning and opening, and the protection of the foam property measuring instrument 100 is completed, the foam property measuring instrument 100 is prevented from being contacted with other objects in the transportation process, dust falling on the foam property measuring instrument 100 can be prevented in the placing process, when the foam property measuring instrument 100 is needed to be used, only the baffle 407 is needed to be overturned again and the movable cover plate 402 is overturned to be opened, then the protective shell 400 is pushed, the protective shell 400 slides on the two limiting bars 411 respectively through the two limiting sliding grooves 410, the continuously moving protective shell 400 exposes the foam property measuring instrument 100, so that the foam property measuring instrument 100 is used, the movable toothed plate 302 can be overturned before the foam property measuring instrument 100 is used, the movable toothed plate 302 can rotate on the rotating shaft 301 through the rotating holes 304 when rotating, so that the overturning effect is realized, the movable toothed plate 302 can compress the first torsion spring 305 and keep away from the limiting toothed ring 303 when being overturned, and the limiting of the limiting toothed ring 303 and the knob 206 can be relieved at the moment, when the knob 206 is turned, the knob 206 drives the screw rod 205 to rotate on the adjusting box 212 and simultaneously drives the sliding plate 202 to horizontally slide through the cooperation with the threaded hole 207, the horizontally sliding plate 202 drives the horizontal sliding blocks 211 at two sides to respectively slide in the two horizontal sliding grooves 210, thereby limiting the moving direction of the sliding plate 202, the continuously moving sliding plate 202 drives two of the linkage blocks 203 to move, so that the two moving linkage blocks 203 respectively drive one ends of the two linkage rods 204 to rotate and move through the cooperation of the upper linkage holes 208 and the linkage shaft 209, the other ends of the two linkage rods 204 rotate on the other two linkage blocks 203 and drive the linkage blocks 203 to move, the continuously moving linkage blocks 203 drive the base 101 to move, and the base 101 drives the two connecting blocks 200 to rotate on the connecting shaft 201, the effect of adjusting the angle between the base 101 and the foam property measuring apparatus 100 is achieved, so that the foam property measuring apparatus 100 is leveled, after the foam property measuring apparatus 100 is leveled, the movable toothed plate 302 is loosened, at the moment, the compressed first torsion spring 305 can be released and drive the movable toothed plate 302 to turn over and reset, the reset movable toothed plate 302 can be meshed with the limiting toothed ring 303 again, the knob 206 and the screw rod 205 are limited again, and the base 101 is prevented from being loosened.

Further, the adjusting structure comprises a screw rod 205, the screw rod 205 is rotatably mounted on the adjusting box 212, a knob 206 is fixedly mounted at one end of the screw rod 205, a threaded hole 207 is formed in the sliding plate 202, the screw rod 205 is threadedly mounted in the threaded hole 207, the knob 206 is rotated, the screw rod 205 is driven to rotate on the adjusting box 212 while the sliding plate 202 is driven to horizontally slide through cooperation with the threaded hole 207 when the knob 206 rotates, the horizontally sliding plate 202 drives two horizontal sliding blocks 211 at two sides to slide in two horizontal sliding grooves 210 respectively, the moving direction of the sliding plate 202 is further limited, the continuously moving sliding plate 202 drives two of the two linkage blocks 203 to move, one ends of the two linkage rods 204 are driven to rotate and move respectively through cooperation of the upper linkage holes 208 and the linkage shafts 209, the other ends of the two linkage rods 204 rotate on the other two linkage blocks 203 and drive the linkage blocks 203 to move, and the continuously moving linkage blocks 203 push the base 101 to move, so that the base 101 drives the two connecting blocks 200 to rotate on the connecting shaft 201, and the leveling instrument 100 is realized, and the characteristics of the foam instrument 100 can be measured.

Further, two linkage holes 208 are formed in the linkage rod 204, linkage shafts 209 are rotatably mounted in the two linkage holes 208, the two linkage shafts 209 are fixedly mounted on one sides of the two linkage blocks 203 respectively, and the two moving linkage blocks 203 drive one ends of the two linkage rods 204 to rotate and move through the cooperation of the upper linkage holes 208 and the linkage shafts 209 respectively, so that the other ends of the two linkage rods 204 rotate on the other two linkage blocks 203 and drive the linkage blocks 203 to move, and the continuously moving linkage blocks 203 can push the base 101 to move.

Further, the inner walls of two sides of the adjusting box 212 are provided with horizontal sliding grooves 210, the two horizontal sliding grooves 210 are provided with horizontal sliding blocks 211 in a sliding manner, the two horizontal sliding blocks 211 are respectively and fixedly arranged on two sides of the sliding plate 202, and the horizontal sliding plate 202 drives the horizontal sliding blocks 211 on two sides to slide in the two horizontal sliding grooves 210 respectively, so that the moving direction of the sliding plate 202 is limited.

Further, the limiting structure comprises a movable toothed plate 302, the movable toothed plate 302 is rotatably mounted on the rotating shaft 301, a limiting toothed ring 303 is fixedly sleeved on the knob 206, the limiting toothed ring 303 is meshed with the movable toothed plate 302, the movable toothed plate 302 is turned over, the movable toothed plate 302 rotates on the rotating shaft 301 through a rotating hole 304, so that a turning effect is achieved, the movable toothed plate 302 can compress a first torsion spring 305 and is far away from the limiting toothed ring 303 while turning over, and at the moment, the limitation on the limiting toothed ring 303 and the knob 206 can be relieved.

Further, a rotating hole 304 is formed in the movable toothed plate 302, the rotating shaft 301 is rotatably mounted in the rotating hole 304, a first torsion spring 305 is fixedly sleeved on the rotating shaft 301, one end of the first torsion spring 305 is fixedly mounted on the inner wall of the rotating hole 304, the other end of the first torsion spring 305 is fixedly mounted on the rotating shaft 301, the movable toothed plate 302 rotates on the rotating shaft 301 through the rotating hole 304 when rotating, so that the overturning effect is achieved, and the movable toothed plate 302 overturns and compresses the first torsion spring 305 and is far away from the limiting toothed ring 303.

Further, the protection structure comprises a protection shell 400, the protection shell 400 is movably arranged on the regulating box 212, two connecting bars 401 are symmetrically and fixedly arranged on one side of the protection shell 400, a movable cover plate 402 is rotatably arranged on each of the two connecting bars 401, two fixing bars 403 are symmetrically and fixedly arranged on the top side of the protection shell 400, two limiting grooves 404 are respectively arranged on the two fixing bars 403, a limiting turntable 405 is rotatably arranged in each of the four limiting grooves 404, one movable rod 406 is fixedly arranged on the two limiting turntables 405 on the same side, a baffle 407 is fixedly arranged on one side of each of the two movable rods 406, the two baffles 407 are turned over, when the baffle 407 rotates, the movable rods 406 are driven to rotate in movable holes 408 on the fixing bars 403, thereby realizing the turning effect, when the movable rods 406 rotate, a second torsion spring 409 is compressed and the two limiting turntables 405 are driven to rotate in the two limiting grooves 404 respectively, further, the movable rod 406 is prevented from being deviated, the movable plate 407 is continuously rotated to enable the movable plate 407 to be far away from the folding of the protective shell 400, then the movable plate 402 on two sides is turned over, the movable plate 402 can rotate on the connecting strip 401, the protective shell 400 is continuously turned over by the connecting strip 401, then the movable plate 407 is loosened, at the moment, the compressed second torsion spring 409 can drive the movable rod 406 to rotate and reset, so that the movable rod 406 which is rotated and reset drives the movable plate 407 to turn and reset, the movable plate 402 is prevented from being blocked by the movable plate 407, the movable plate 402 is prevented from turning and opening, the protection of the foam property tester 100 is completed, the foam property tester 100 is prevented from being in contact collision with other objects in the transportation process, and the foam property tester 100 can be prevented from falling on dust in the placing process.

Further, the inner wall of the fixed bar 403 is provided with a movable hole 408, the movable bar 406 is rotatably installed in the movable hole 408, a second torsion spring 409 is fixedly sleeved on the movable bar 406, one end of the second torsion spring 409 is fixedly installed on the inner wall of the movable hole 408, the other end of the second torsion spring 409 is fixedly installed on the movable bar 406, both inner walls of two sides of the protective shell 400 are provided with limiting sliding grooves 410, limiting bars 411 are slidably installed in both limiting sliding grooves 410, both limiting bars 411 are fixedly installed on the adjusting box 212, the movable bar 406 is driven to rotate in the movable hole 408 on the fixed bar 403 when the baffle 407 rotates, so that the overturning effect is achieved, the second torsion spring 409 is compressed while the movable bar 406 rotates, the protective shell 400 is pushed, the protective shell 400 slides on the two limiting bars 411 respectively through the two limiting sliding grooves 410, and the continuously moving protective shell 400 can expose the foam characteristic tester 100.

The working principle of the utility model is as follows:

when the foam property measuring instrument 100 needs to be transported, two baffles 407 can be turned over, when the baffles 407 rotate, the movable rods 406 are driven to rotate in the movable holes 408 on the fixed bars 403, so that the turnover effect is achieved, the movable rods 406 rotate and simultaneously compress the second torsion springs 409 and drive the two limiting turntables 405 to rotate in the two limiting grooves 404 respectively, further, the movable rods 406 are prevented from deflecting, the baffles 407 are continuously rotated to enable the baffles 407 to be far away from the folding of the protective shell 400, then the movable cover plates 402 on two sides are turned over, the movable cover plates 402 can rotate on the connecting bars 401, the connecting bars 401 are continuously turned over to enable the protective shell 400 to be closed, then the baffles 407 are loosened, at the moment, the compressed second torsion springs 409 drive the movable rods 406 to rotate and reset, so that the movable rods 406 rotate and reset, the baffles 407 drive the movable cover plates 402 to block the movable cover plates 402, the movable cover plates 402 from being turned over and open, the protection of the foam property measuring instrument 100 is finished, the foam property measuring instrument 100 is prevented from being contacted with other objects in the transportation process, the foam property measuring instrument 100 is prevented from falling on the protective shell, then the foam property measuring instrument 100 needs to be turned over, the movable cover plates are required to be turned over, and the two sides of the foam property measuring instrument can be continuously turned over by the movable cover plates 100, and the two movable cover plates are enabled to be turned over by the movable cover plates 302, and the movable cover plates are enabled to be kept away from the rotary plates, and the rotary plates 302, and the rotary shafts are simultaneously, and the movable cover plates are kept away from the movable by the movable plates 100 to be kept by the movable cover plates 100 to be kept by the movable plates, and the movable cover plates 100 to be kept by the movable plates, and the movable plates. At this time, the limitation on the limiting toothed ring 303 and the knob 206 can be removed, when the knob 206 is rotated, the screw rod 205 is driven to rotate on the adjusting box 212 while the screw rod 205 is driven to horizontally slide through the cooperation with the threaded hole 207, the horizontally sliding plate 202 drives the horizontal sliding blocks 211 on two sides to slide in the two horizontal sliding grooves 210 respectively, the moving direction of the sliding plate 202 is further limited, the continuously moving sliding plate 202 drives the two linkage blocks 203 to move, the two moving linkage blocks 203 respectively drive one ends of the two linkage rods 204 to rotate and move through the cooperation of the linkage holes 208 and the linkage shaft 209, the other ends of the two linkage rods 204 rotate on the other two linkage blocks 203 and drive the linkage blocks 203 to move, the continuously moving linkage blocks 203 push the base 101 to move, the base 101 drives the two connecting blocks 200 to rotate on the connecting shaft 201, the effect of adjusting the angle of the base 101 and the foam property measuring instrument 100 is achieved at this time, the foam property measuring instrument 100 is leveled, after the adjustment, the movable toothed plate 302 is loosened, the first linkage blocks 205 are compressed and the movable toothed plate 302 is reset, and the movable toothed plate 302 is reset, and the movable toothed ring is prevented from being reset, and the screw rod is reset, and the base is prevented from being reset, and the movable toothed ring is prevented from being meshed with the movable ring 303.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims (8)

1. Lubricating oil foam property measuring device, including foam property measuring device (100), be equipped with base (101), its characterized in that on foam property measuring device (100): two connecting blocks (200) are symmetrically arranged on the bottom side of the base (101), the same connecting shaft (201) is rotatably arranged on the two connecting blocks (200), an adjusting box (212) is fixedly arranged on the connecting shaft (201), a sliding plate (202) is slidably arranged on the inner wall of the adjusting box (212), two linkage blocks (203) are symmetrically and fixedly arranged on the sliding plate (202) and the base (101), the same linkage rod (204) is rotatably arranged on the two linkage blocks (203) on the same side, an adjusting structure is arranged on the sliding plate (202), two fixing blocks (300) are symmetrically and fixedly arranged on one side of the adjusting box (212), the same rotating shaft (301) is fixedly arranged on the two fixing blocks (300), a limiting structure is arranged on the rotating shaft (301), and a protecting structure is arranged on the adjusting box (212).

2. A lubricating oil foam property analyzer according to claim 1, wherein: the adjusting structure comprises a screw rod (205), the screw rod (205) is rotatably arranged on an adjusting box (212), a knob (206) is fixedly arranged at one end of the screw rod (205), a threaded hole (207) is formed in a sliding plate (202), and the screw rod (205) is installed in the threaded hole (207) in a threaded mode.

3. A lubricating oil foam property analyzer according to claim 1, wherein: two linkage holes (208) are formed in the linkage rod (204), linkage shafts (209) are rotatably mounted in the two linkage holes (208), and the two linkage shafts (209) are fixedly mounted on one sides of the two linkage blocks (203) respectively.

4. A lubricating oil foam property analyzer according to claim 1, wherein: horizontal sliding grooves (210) are formed in the inner walls of two sides of the adjusting box (212), horizontal sliding blocks (211) are slidably mounted in the two horizontal sliding grooves (210), and the two horizontal sliding blocks (211) are fixedly mounted on two sides of the sliding plate (202) respectively.

5. A lubricating oil foam property analyzer according to claim 1, wherein: the limiting structure comprises a movable toothed plate (302), the movable toothed plate (302) is rotatably arranged on the rotating shaft (301), a limiting toothed ring (303) is fixedly sleeved on the knob (206), and the limiting toothed ring (303) is meshed with the movable toothed plate (302).

6. A lubricating oil foam property analyzer according to claim 5, wherein: the movable toothed plate (302) is provided with a rotating hole (304), the rotating shaft (301) is rotatably arranged in the rotating hole (304), the rotating shaft (301) is fixedly sleeved with a first torsion spring (305), one end of the first torsion spring (305) is fixedly arranged on the inner wall of the rotating hole (304), and the other end of the first torsion spring (305) is fixedly arranged on the rotating shaft (301).

7. A lubricating oil foam property analyzer according to claim 1, wherein: the protection structure comprises a protection shell (400), wherein the protection shell (400) is movably mounted on an adjusting box (212), two connecting rods (401) are symmetrically and fixedly mounted on one side of the protection shell (400), a movable cover plate (402) is rotatably mounted on the two connecting rods (401), two fixing rods (403) are symmetrically and fixedly mounted on the top side of the protection shell (400), two limiting grooves (404) are formed in the two fixing rods (403), limiting turntables (405) are rotatably mounted in the four limiting grooves (404), one movable rod (406) is fixedly mounted on the two limiting turntables (405) on the same side, and a baffle (407) is fixedly mounted on one side of the two movable rods (406).

8. A lubricating oil foam property analyzer according to claim 7, wherein: the inner wall of fixed strip (403) has seted up movable hole (408), movable rod (406) rotate and install in movable hole (408), fixed second torsional spring (409) of cup jointing on movable rod (406), the one end fixed mounting of second torsional spring (409) is on the inner wall of movable hole (408), the other one end fixed mounting of second torsional spring (409) is on movable rod (406), spacing spout (410) have all been seted up to the both sides inner wall of protecting crust (400), equal slidable mounting has spacing (411) in two spacing spouts (410), two equal fixed mounting of spacing (411) are on regulating box (212).