Apple quality nondestructive testing equipment

Abstract

The invention relates to the technical field of apple detection, in particular to apple quality nondestructive testing equipment which comprises a fruit tray, a rotating shaft, a driving shaft sleeve, a lantern ring, a first connecting plate, a supporting plate, a rotating cylinder, a linkage shaft, an inner ring, an outer ring and protrusions. According to the apple quality nondestructive testing equipment, a first driving source drives a rotating shaft to rotate, the rotating shaft drives a driving shaft sleeve to rotate through a first limiting block and a first limiting groove, the driving shaft sleeve drives a supporting shaft to rotate through a screw rod section and a linkage wheel, and the supporting shaft drives rotating cylinders to rotate, so that the two rotating cylinders rotate; and the bulges on the outer ring can enable the apples to be in a rolling state, so that the detection machine can conveniently detect the apples at multiple angles.

Description

Technical Field

[0001] The present invention relates to the technical field of apple testing, and in particular to non-destructive testing equipment for apple quality. Background Art

[0002] Fruit is an edible plant fruit that is rich in vitamins. Common fruits include apples, pears, tangerines, oranges, bananas, etc. In order to ensure that the fruits supplied to people are intact, fruits are currently tested using non-destructive testing technology before they are put on the market to reduce the probability of people buying bad fruits. Non-destructive testing technology can comprehensively evaluate the quality of the apple without destroying its appearance and internal structure.

[0003] At present, nondestructive testing devices are needed for nondestructive testing of small round fruits such as apples, tangerines, and oranges (hereinafter referred to as fruits). Most of the nondestructive testing devices on the market are in the form of assembly lines, mainly composed of multiple sets of conveyor belts, spectral detection components, and fruit trays. When in use, the fruit is placed on the fruit tray, and then the fruit tray is placed on the conveyor belt. When the fruit enters the spectral detection component, its internal full projection spectrum will detect the fruit, so as to obtain the internal quality index of the fruit. Then the image acquisition component in the spectral detection component will capture the image of the appearance of the fruit to obtain the external quality index of the fruit, and then the defective fruit will be quickly detected through the detection and grading algorithm, and then transmitted to the next sorting conveyor belt through the conveyor belt, waiting for manual unloading.

[0004] When the above-mentioned fruit nondestructive testing device is testing fruits, the fruits are placed statically in the fruit tray. When the fruit tray with the fruits passes through the spectral detection component, the spectral detection component can only collect and detect one angle of the fruit. If the part of the fruit not irradiated by the spectral detection component is damaged, the spectral detection component cannot detect that there is a problem with the fruit, which will cause bad fruits to pass the test, thus affecting the inspection quality of the fruit. Summary of the invention

[0005] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides an apple quality nondestructive testing device to solve the problem that the above-mentioned spectral detection component can only perform single-angle collection and detection on fruits in a static state, and cannot perform multi-angle collection and detection.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is:

[0007] The nondestructive testing equipment for apple quality comprises a conveying frame, on which a testing machine is installed, and is characterized in that a fruit tray is installed on the conveying belt of the conveying frame, and the fruit tray consists of a base and a baffle frame;

[0008] The turning mechanism is arranged inside the fruit tray, and the turning mechanism includes two rotating shafts rotatably connected to the inner wall of the base, two driving shaft sleeves are sleeved on each rotating shaft, and a ring is connected to the outside of each driving shaft sleeve, and a first connecting plate is fixed between the two symmetrical rings, and two symmetrical supporting plates are fixed on the top of each first connecting plate, and a rotating drum is installed between the two symmetrical supporting plates, and a linkage shaft is arranged inside the two rotating drums, and a plurality of equidistant inner rings are arranged on the surface of the linkage shaft, and an outer ring is arranged outside each inner ring, and a plurality of equidistant protrusions are arranged on the outer wall of each outer ring.

[0009] Preferably, linkage gears are installed on the two rotating shafts, and a transmission belt is installed between every two linkage gears. The transmission belt cooperates with the linkage gears to make the two rotating shafts rotate synchronously.

[0010] Preferably, four first limit blocks arranged at equal distances are fixed on the outer wall of the rotating shaft, and the four first limit blocks are arranged in a ring shape on the rotating shaft. The inner wall of the driving sleeve on each rotating shaft is provided with a first limit groove matched with the first limit block, and the driving sleeve is slidably connected to the rotating shaft through the first limit groove and the first limit block.

[0011] Preferably, support shafts are fixed at both ends of the rotating drum, a limiting hole matching the support shaft is opened on the supporting plate, and the outer wall of the support shaft is rotatably connected to the inner wall of the limiting hole to support the rotating drum.

[0012] Preferably, a linkage wheel is fixed to the outer wall of one end of the support shaft extending out of the limiting hole, the outer wall of the driving sleeve has a screw segment, and the screw segment of the driving sleeve is connected to the linkage wheel of the support shaft, and the connection method between the screw segment and the linkage wheel is the same as that of the worm gear.

[0013] Preferably, both ends of the rotating drum are provided with a first accommodating hole adapted to the linkage shaft, the supporting shaft is provided with a second accommodating hole adapted to the linkage shaft, and the outer walls at both ends of the linkage shaft are rotatably connected to the corresponding first accommodating hole and the inner wall of the second accommodating hole.

[0014] Preferably, a driving mechanism is provided inside the fruit tray, and the driving mechanism includes a reciprocating screw arranged between two first connecting plates, the reciprocating screw has threaded grooves with symmetrical ends, circular holes are opened on the two first connecting plates, linkage protrusions are provided on the inner walls of the circular holes, and the first connecting plates are slidably connected to the inside of the threaded grooves through the linkage protrusions on the circular holes, a second driving source is installed on the bottom frame, and the output end of the second driving source is fixed on one end of the reciprocating screw, and a first driving source is installed on the outside of the base, and the output end of the first driving source is fixed on one end of the rotating shaft.

[0015] Preferably, an adjustment mechanism is provided on the rotating drum, and the adjustment mechanism includes a first gear installed on both ends of the linkage shaft, and first racks are fixed on the inner walls on both sides of the base, each first gear corresponds to a first rack, and the first gear is meshingly connected with the first gear, and two symmetrical second thread grooves are provided on the linkage shaft, and the two second thread grooves are located at both ends of the linkage shaft, and the inner rings located at both ends of the linkage shaft are slidably connected to the corresponding second thread grooves through limiting protrusions on the inner wall, and a first reset spring is fixed between every two outer rings.

[0016] Preferably, the outer surface of the outer ring is provided with a plurality of equidistantly arranged receiving grooves, each receiving groove corresponds to a protrusion, and a second return spring is fixed between one end of the protrusion and the inner wall of the receiving groove.

[0017] Preferably, slide grooves are provided on both sides of the inner wall of each opening of the rotating drum, and a guide block is fixed to the inner wall of the slide groove, the guide block has an inclined section and a straight section, and the bottom end of the inclined section is connected to the head end of the straight section, and a sliding column is fixed to the outer wall of each protrusion, and the sliding column is located inside the slide groove, and the initial position of the slide groove is located at the top of the inclined section of the guide block.

[0018] The beneficial effects of the present invention are:

[0019] 1. The fruit tray is transported through the conveyor rack and passes through the inside of the inspection machine, making it easier for the inspection machine to inspect the apples inside the fruit tray.

[0020] 2. The rotating shaft is driven to rotate by the first driving source, and the rotating shaft drives the driving sleeve to rotate through the first limit block and the first limit groove, the driving sleeve drives the supporting shaft to rotate through the screw segment and the linkage wheel, and the supporting shaft drives the rotating drum to rotate, so that the two rotating drums rotate, and the protrusions on the outer ring can make the apples roll, so that the detection machine can detect the apples at multiple angles.

[0021] 3. The reciprocating screw is driven to rotate by the second driving source, and the reciprocating screw drives the two first connecting plates to approach each other, and the first connecting plates drive the two rotating cylinders to approach each other through the supporting plates, thereby reducing the gap between the two rotating cylinders, so that the protrusions can roll apples of different sizes, thereby preventing the gap between the two rotating cylinders from being too large, causing the smaller apples to roll at a smaller angle.

[0022] 4. The linkage shaft is driven to rotate by the first gear and the first rack, and the inner rings at both ends of the linkage shaft slide on the second thread grooves, and the inner rings are squeezed and pushed by the second reset springs connected to each other, so that the two groups of inner rings are close to each other, thereby reducing the gap between adjacent protrusions, thereby providing more contact points for the smaller apple surface, acting more evenly on the apple, and providing a more stable turning power for the apple.

[0023] 5. The inner ring is driven to slide toward the middle thereof through the linkage shaft, and the sliding column on the protrusion can slide inside the receiving groove, and the guide block can limit the sliding column, so that the protrusion slides inside the receiving groove, thereby reducing the height of the protrusion outside the rotating drum, thereby avoiding excessive squeezing of the apple by the protrusion when the two rotating drums are close. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of the present invention.

[0025] Figure 2 It is a structural schematic diagram of a fruit tray of the present invention.

[0026] Figure 3 It is a structural schematic diagram of a first three-dimensional cross section of a fruit tray of the present invention.

[0027] Figure 4 It is a structural schematic diagram of the turning mechanism of the present invention.

[0028] Figure 5 It is a schematic structural diagram of the rotating drum of the present invention.

[0029] Figure 6 It is a structural schematic diagram of the first three-dimensional cross-section of the adjustment mechanism of the present invention.

[0030] Figure 7 It is a schematic structural diagram of the linkage shaft of the present invention.

[0031] In the figure:

[0032] 10. conveyor frame; 11. inspection machine; 12. fruit tray; 120. base; 121. stop frame;

[0033] 20. Turning mechanism; 21. Rotating shaft; 22. Driving shaft sleeve; 23. Sleeve ring; 24. First connecting plate; 25. First limiting block; 26. First limiting groove; 27. Support plate; 28. Rotating drum; 29. ​​Support shaft; 210. Limiting hole; 211. Linkage wheel; 212. Linkage shaft; 213. First accommodating hole; 214. Second accommodating hole; 215. Inner ring; 216. Outer ring; 217. Protrusion; 218. Linkage gear; 219. Transmission belt;

[0034] 30. driving mechanism; 31. reciprocating screw; 32. first thread groove; 33. first driving source; 34. second driving source;

[0035] 40. Adjustment mechanism; 41. First gear; 42. First rack; 43. Second threaded groove; 45. First return spring; 47. Accommodating groove; 48. Second return spring; 49. Slide groove; 410. Guide block; 411. Sliding column. DETAILED DESCRIPTION

[0036] The following will refer to the attached Figures 1 to 7 The embodiments of the present invention are described in detail. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0037] As attached Figure 1-Figure 7 As shown, Apple quality non-destructive testing equipment includes:

[0038] A conveyor frame 10 is provided with a detector 11 for inspecting apples. A fruit tray 12 is provided on the conveyor belt of the conveyor frame 10. The fruit tray 12 is composed of a base 120 and a baffle 121. The baffle 121 is expanded from the bottom to the top, and the bottom of the baffle 121 is fixed to the top of the base 120 for storing apples.

[0039] The inside of the fruit tray 12 is provided with a flipping mechanism 20 for flipping the apples placed inside the fruit tray 12, so as to facilitate the inspection machine 11 to perform non-destructive inspection on the apples at multiple angles;

[0040] The flip mechanism 20 includes two rotating shafts 21 rotatably connected to the inner wall of the base 120, each rotating shaft 21 is sleeved with two driving sleeves 22, and the driving sleeves 22 on the two rotating shafts 21 are symmetrical to each other, each driving sleeve 22 is provided with a collar 23 on the outside, and the outer wall of the driving sleeve 22 is rotatably connected to the inner wall of the collar 23, a first connecting plate 24 is fixed between the two symmetrical collars 23, and each first connecting plate 24 corresponds to two collars 23, which are used to support the driving sleeves 22, and linkage gears 218 are installed on the two rotating shafts 21, and a transmission belt 219 is installed between every two linkage gears 218, and the transmission belt 219 cooperates with the linkage gear 218 to make the two rotating shafts 21 rotate synchronously;

[0041] Four first limit blocks 25 arranged at equal distances are fixed on the outer wall of the rotating shaft 21, and the four first limit blocks 25 are arranged in a ring shape on the rotating shaft 21. The inner wall of the driving sleeve 22 on each rotating shaft 21 is provided with a first limit groove 26 adapted to the first limit block 25, and the driving sleeve 22 is slidably connected to the rotating shaft 21 through the first limit groove 26 and the first limit block 25;

[0042] Two symmetrical support plates 27 are fixed on the top of each first connecting plate 24, the inner bottom wall of the base 120 has a bottom frame, the bottom of the support plate 27 is slidably connected to the surface of the bottom frame, a rotating drum 28 is installed between the two support plates 27 connected by the first connecting plate 24, and support shafts 29 are fixed at both ends of the rotating drum 28, and a limiting hole 210 adapted to the support shaft 29 is opened on the support plate 27, and the outer wall of the support shaft 29 is rotatably connected to the inner wall of the limiting hole 210, so as to support the rotating drum 28;

[0043] The outer wall of the rotating drum 28 is provided with a plurality of openings arranged at equal distances, and the plurality of openings are arranged in a ring shape on the rotating drum 28. A linkage wheel 211 is fixed to the outer wall of one end of the support shaft 29 extending out of the limiting hole 210. The outer wall of the driving sleeve 22 has a screw segment, and the screw segment of the driving sleeve 22 is connected to the linkage wheel 211 of the support shaft 29, and the connection method between the screw segment and the linkage wheel 211 is the same as that of the worm gear.

[0044] The two rotating drums 28 are provided with linkage shafts 212 inside, and both ends of the rotating drums 28 are provided with first receiving holes 213 adapted to the linkage shafts 212, and the supporting shaft 29 is provided with second receiving holes 214 adapted to the linkage shafts 212, and the outer walls of both ends of the linkage shafts 212 are rotatably connected to the corresponding inner walls of the first receiving holes 213 and the second receiving holes 214;

[0045] The surface of the linkage shaft 212 is provided with a plurality of equidistant inner rings 215. In the present embodiment, the number of the inner rings 215 is six, and every three adjacent inner rings 215 form a group. The two groups of inner rings 215 are symmetrical with the middle part of the linkage shaft 212 as the center. An outer ring 216 is provided on the outside of each inner ring 215, and the inner wall of the outer ring 216 is rotatably connected to the outer wall of the corresponding inner ring 215. The outer wall of each outer ring 216 is provided with a plurality of equidistantly arranged protrusions 217. The plurality of protrusions 217 are arranged in a ring shape on the outer ring 216. The protrusion 217 is composed of a cylinder and an arc block, and the end of the cylinder away from the rotating drum 28 is fixed on one side of the arc block, and the arc block is located outside the rotating drum 28.

[0046] like Figure 2 , Figure 3 and Figure 4 As shown, a driving mechanism 30 is disposed inside the fruit tray 12, which can drive the rotating drum 28 to rotate and roll the apples, and can also bring the two rotating drums 28 closer to accommodate smaller apples.

[0047] The driving mechanism 30 includes a reciprocating screw 31 arranged between two first connecting plates 24, and the reciprocating screw 31 has threaded grooves with symmetric ends. Circular holes are opened on the two first connecting plates 24, and linkage protrusions are provided on the inner walls of the circular holes. The first connecting plates 24 are slidably connected to the inside of the threaded grooves through the linkage protrusions on the circular holes. When the reciprocating screw 31 rotates, the two first connecting plates 24 can drive the connected rotating cylinders 28 to approach and move away from each other. A second driving source 34 is installed on the bottom frame, and the output end of the second driving source 34 is fixed on one end of the reciprocating screw 31. A first driving source 33 is installed on the outside of the base 120, and the output end of the first driving source 33 is fixed on one end of the rotating shaft 21.

[0048] Since the second driving source 34 and the first driving source 33 are both connected to the control system, when the device is used, some apples are first placed inside the fruit tray 12 so that multiple apples are evenly located between the two rotating drums 28. Then the staff turns on the second driving source 34 and the first driving source 33 through the control system, and then the conveyor frame 10 conveys the fruit tray 12, so that when the fruit tray 12 passes through the detection machine 11, the detection machine 11 will detect the apples inside the fruit tray 12, and the output end of the first driving source 33 drives the rotating shaft 21 to rotate, and the rotating shaft 21 can drive the driving shaft sleeve 22 on its surface to rotate through the cooperation of the first limit block 25 and the first limit groove 26. The driving shaft sleeve 22 can drive the rotating drum 28 on the support shaft 29 to rotate through the cooperation of the screw segment and the linkage wheel 211, and the two rotating drums 28 rotate in the same direction, so that the apples can be rolled.

[0049] As the second driving source 34 drives the reciprocating screw 31 to rotate, the reciprocating screw 31 can drive the two first connecting plates 24 to approach each other. When the first connecting plate 24 slides along the axial direction of the reciprocating screw 31, the first connecting plate 24 drives the driving sleeve 22 to slide through the ring 23, and the first connecting plate 24 simultaneously drives the rotating drum 28 to slide through the support plate 27, thereby maintaining the synchronous sliding of the rotating drum 28 and the driving sleeve 22. As the two rotating drums 28 approach each other, the gap between the two rotating drums 28 is reduced, so that the protrusion 217 on the outer ring 216 can roll apples of different sizes.

[0050] An adjusting mechanism 40 is provided on the rotating drum 28 for driving the plurality of outer rings 216 to approach each other and reduce the gaps between the plurality of protrusions 217 so as to contact the surface of the apple at multiple points to cause it to roll.

[0051] The adjusting mechanism 40 includes a first gear 41 installed on both ends of the linkage shaft 212, and first racks 42 are fixed on the inner walls on both sides of the base 120, each first gear 41 corresponds to a first rack 42, and the first gear 41 is meshed with the first gear 41, and the first gear 41 cooperates with the first gear 41 to drive the linkage shaft 212 to rotate, so that the inner ring 215 on the linkage shaft 212 approaches and moves away from each other, and two symmetrical second thread grooves 43 are provided on the linkage shaft 212, and the two second thread grooves 43 are located at both ends of the linkage shaft 212, and the inner rings 215 located at both ends of the linkage shaft 212 are slidably connected to the corresponding second thread grooves 43 through the limiting protrusions on the inner wall, and a first return spring 45 is fixed between every two outer rings 216.

[0052] The outer surface of the outer ring 216 is provided with a plurality of equidistantly arranged receiving grooves 47, each receiving groove 47 corresponds to a protrusion 217, and a second reset spring 48 is fixed between one end of the protrusion 217 and the inner wall of the receiving groove 47 for supporting the protrusion 217, thereby facilitating the reset of the protrusion 217.

[0053] Slide grooves 49 are provided on both sides of the inner wall of each opening of the rotating drum 28, and a guide block 410 is fixed to the inner wall of the slide groove 49. The guide block 410 has an inclined section and a straight section, and the bottom end of the inclined section is connected to the head end of the straight section. A sliding column 411 is fixed to the outer wall of each protrusion 217, and the sliding column 411 is located inside the slide groove 49, and the initial position of the slide groove 49 is located at the top of the inclined section of the guide block 410.

[0054] When the reciprocating screw 31 drives the two first connecting plates 24 to approach each other, the first gear 41 cooperates with the first rack 42 to drive the linkage shaft 212 to rotate, and the inner ring 215 located at both ends of the linkage shaft 212 slides from the head end of the first thread groove 32 to its tail end, and the tail end of the first thread groove 32 is close to the middle of the linkage shaft 212. At this time, the inner ring 215 at both ends of the linkage shaft 212 slides to the middle of the linkage shaft 212, and the outer ring 216 drives the adjacent outer ring 216 to slide through the second return spring 48, and the adjacent outer rings 216 will squeeze the second return spring 48 against each other. After the inner ring 215 slides from the first thread groove 32 to its tail end, the second return spring 48 is also compressed to the limit position, thereby reducing the gap between adjacent protrusions 217, thereby providing more driving points for apples, thereby facilitating driving apples of different sizes to roll.

[0055] When the inner ring 215 slides from the head end of the first thread groove 32 to its tail end, the sliding column 411 slides from the top end of the guide block 410 to its bottom end, and the protrusion 217 will slide to the inside of the accommodating groove 47, thereby lowering the height of the protrusion 217 exposing the rotating drum 28. As the inner ring 215 slides, the sliding column 411 will be limited by the straight section and slide at the bottom of the straight section, thereby avoiding the squeezing of the apple when the two rotating drums 28 approach each other. When the reciprocating screw 31 drives the first connecting plate 24 to continue to slide away from each other and reset, the inner ring 215 located at both ends of the linkage shaft 212 slides from the tail end of the first thread groove 32 to its head end, and the outer ring 216 is driven by the second reset spring 48 to reset, and the reciprocating screw 31 slides to the oblique section again, thereby repeating the above operation.

[0056] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. Apple quality non-destructive testing equipment, characterized by: It comprises a conveyor frame, on which a detector is installed, and is characterized in that a fruit tray is installed on the conveyor belt of the conveyor frame, and the fruit tray consists of a base and a baffle frame; The turning mechanism is arranged inside the fruit tray, and the turning mechanism includes two rotating shafts rotatably connected to the inner wall of the base, two driving shaft sleeves are sleeved on each rotating shaft, and a ring is connected to the outside of each driving shaft sleeve, and a first connecting plate is fixed between the two symmetrical rings, and two symmetrical supporting plates are fixed on the top of each first connecting plate, and a rotating drum is installed between the two symmetrical supporting plates, and a linkage shaft is arranged inside the two rotating drums, and a plurality of equidistant inner rings are arranged on the surface of the linkage shaft, and an outer ring is arranged outside each inner ring, and a plurality of equidistant protrusions are arranged on the outer wall of each outer ring.

2. The nondestructive testing device for apple quality according to claim 1, characterized in that: The two rotating shafts are both provided with linkage gears, and a transmission belt is provided between every two linkage gears. The transmission belt cooperates with the linkage gears to make the two rotating shafts rotate synchronously.

3. The nondestructive testing device for apple quality according to claim 1, characterized in that: Four first limit blocks arranged at equal distances are fixed on the outer wall of the rotating shaft, and the four first limit blocks are arranged in a ring shape on the rotating shaft. The inner wall of the driving sleeve on each rotating shaft is provided with a first limit groove matched with the first limit block, and the driving sleeve is slidably connected to the rotating shaft through the first limit groove and the first limit block.

4. The nondestructive testing device for apple quality according to claim 1, characterized in that: Support shafts are fixed at both ends of the rotating drum, and a limiting hole matched with the supporting shaft is opened on the supporting plate, and the outer wall of the supporting shaft is rotatably connected to the inner wall of the limiting hole for supporting the rotating drum.

5. The nondestructive testing device for apple quality according to claim 1, characterized in that: A linkage wheel is fixed to the outer wall of one end of the support shaft extending out of the limiting hole, and the outer wall of the driving sleeve has a screw segment, and the screw segment of the driving sleeve is connected to the linkage wheel of the support shaft, and the connection method of the screw segment and the linkage wheel is the same as that of the worm gear.

6. The nondestructive testing device for apple quality according to claim 1, characterized in that: Both ends of the rotating drum are provided with first accommodating holes adapted to the linkage shaft, and the supporting shaft is provided with second accommodating holes adapted to the linkage shaft, and the outer walls at both ends of the linkage shaft are rotatably connected to the corresponding first accommodating holes and the inner walls of the second accommodating holes.

7. The nondestructive testing device for apple quality according to claim 1, characterized in that: The fruit tray is provided with a driving mechanism inside, the driving mechanism comprising a reciprocating screw arranged between two first connecting plates, the reciprocating screw having threaded grooves symmetrical at both ends, circular holes opened on the two first connecting plates, linkage protrusions on the inner walls of the circular holes, and the first connecting plates are slidably connected to the inside of the threaded grooves through the linkage protrusions on the circular holes, a second driving source is installed on the bottom frame, and the output end of the second driving source is fixed on one end of the reciprocating screw, and a first driving source is installed on the outside of the base, and the output end of the first driving source is fixed on one end of the rotating shaft.

8. The nondestructive testing device for apple quality according to claim 1, characterized in that: The rotating drum is provided with an adjusting mechanism, which includes a first gear installed on both ends of the linkage shaft, first racks are fixed on the inner walls on both sides of the base, each first gear corresponds to a first rack, and the first gear is meshed with the first gear, and two symmetrical second thread grooves are provided on the linkage shaft, and the two second thread grooves are located at both ends of the linkage shaft, the inner rings located at both ends of the linkage shaft are slidably connected to the corresponding second thread grooves through limiting protrusions on the inner wall, and a first reset spring is fixed between every two outer rings.

9. The nondestructive testing device for apple quality according to claim 1, characterized in that: The outer surface of the outer ring is provided with a plurality of equidistantly arranged receiving grooves, each receiving groove corresponds to a protrusion, and a second return spring is fixed between one end of the protrusion and the inner wall of the receiving groove.

10. The nondestructive testing device for apple quality according to claim 1, characterized in that: Slide grooves are provided on both sides of the inner wall of each opening of the rotating drum, and a guide block is fixed to the inner wall of the slide groove. The guide block has an inclined section and a straight section, and the bottom end of the inclined section is connected to the head end of the straight section. A sliding column is fixed to the outer wall of each protrusion, and the sliding column is located inside the slide groove, and the initial position of the slide groove is located at the top of the inclined section of the guide block.

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