GB2599231A - Grading machine based on hardness modulus of round bamboo and method for using the same - Google Patents

Grading machine based on hardness modulus of round bamboo and method for using the same Download PDF

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GB2599231A
GB2599231A GB2112939.0A GB202112939A GB2599231A GB 2599231 A GB2599231 A GB 2599231A GB 202112939 A GB202112939 A GB 202112939A GB 2599231 A GB2599231 A GB 2599231A
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fixedly connected
cross beam
round bamboo
moving
screw rods
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GB2599231B (en
GB202112939D0 (en
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Liu Huanrong
Fei Benhua
Dong Yuming
Zhang Xiubiao
Fang Changhua
Ma Xinxin
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International Center for Bamboo and Rattan
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International Center for Bamboo and Rattan
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/40—Investigating hardness or rebound hardness
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/40—Investigating hardness or rebound hardness
    • G01N3/42—Investigating hardness or rebound hardness by performing impressions under a steady load by indentors, e.g. sphere, pyramid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
    • B07C5/34—Sorting according to other particular properties
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
    • G01B11/06—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/0098—Plants or trees
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0014—Type of force applied
    • G01N2203/0016—Tensile or compressive
    • G01N2203/0019—Compressive
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0058—Kind of property studied
    • G01N2203/0076—Hardness, compressibility or resistance to crushing
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/0202—Control of the test
    • G01N2203/0212—Theories, calculations
    • G01N2203/0218—Calculations based on experimental data
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/026—Specifications of the specimen
    • G01N2203/0262—Shape of the specimen
    • G01N2203/0266—Cylindrical specimens
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/06—Indicating or recording means; Sensing means
    • G01N2203/0641—Indicating or recording means; Sensing means using optical, X-ray, ultraviolet, infrared or similar detectors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/06—Indicating or recording means; Sensing means
    • G01N2203/067—Parameter measured for estimating the property
    • G01N2203/0676—Force, weight, load, energy, speed or acceleration
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/06—Indicating or recording means; Sensing means
    • G01N2203/067—Parameter measured for estimating the property
    • G01N2203/0682—Spatial dimension, e.g. length, area, angle

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  • General Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
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  • Analytical Chemistry (AREA)
  • General Health & Medical Sciences (AREA)
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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Wood Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Botany (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Abstract

A grading machine for testing the hardness modulus of bamboo by placing a round bamboo test sample (37, fig. 2) inside a lower pressing plate 13 and clamping it by a clamping cylinder 12. The sample is positioned below a ring light source 16 and moved by a motor 8 relative to a camera 20 which captures images of the sample. The motor is stopped when a moving cross beam 10 touches a limit switch 24, so that the beam has limited positions in motion, and detecting the displacement by photoelectric encoders 24. A V-shaped pressing head 27 is pressed to the sample and pressure detected by a load sensor 26. The hardness modulus of the round bamboo sample is obtained by grading it with reference to a grading standard. The grading machine comprises a base 7 with a motor mounting plate (40, fig. 3) for the servo motor 8. The motor is connected to a synchronising wheel 5, which is connected with two same synchronising wheels (31, fig. 2), through a synchronising belt 3. The synchronising wheels are connected to screw rods (32, fig. 2) which are connected to an upper cross beam 22.

Description

GRADING MACHINE BASED ON HARDNESS MODULUS OF ROUND
BAMBOO AND METHOD FOR USING THE SAME
TECHNICAL FIELD
1011 The present disclosure relates to the technical field of grading machines based on hardness modulus of a round bamboo, and in particular to a grading machine based on hardness modulus of a round bamboo and a method for using the same
BACKGROUND ART
1021 Bamboo resources are redundant in China. Regardless of species, area, stock volume, or annual output of bamboo, it ranks first in the world. Bamboo grows fast, and is sustainable after one-time afforestation, which has high strength and good toughness, and can replace wood to be widely applied in the fields of architecture and furniture. However, bamboo is not scientifically graded, which will not only lead to low processing yield, but also make product performance unstable and overall strength reduced, so that problems such as product cracking, low service life will occur during use. However, because bamboo is a natural biomass material, factors such as species, age, growth characteristics, and external environment of bamboo have certain influence on its appearance, size and performance, resulting in great variability among bamboo individuals. Moso bamboo is formed by combing two components of a fiber and a matrix. The contents of the components of the moso bamboo have great variability in directions of wall thickness and stalk height, and the properties of the various components are also different, for example, the tensile elastic modulus and the tensile strength of the fiber are respectively greater than that of the matrix by 21.54 GPa and 473.08MPa. The internode length of the moso bamboo first increases and then decreases along a bamboo height direction, while the girth and the wall thickness both decrease along the bamboo height direction. The basic density of the moso bamboo increases with the increase of the bamboo height and is significantly affected by the bamboo height. The tensile elastic modulus and strength parallel to grain of the moso bamboo are varied in both the axial and radial directions, and a variation in the radial direction is particularly significant. Tensile elastic modulus parallel to grain of the outermost layer is 3-4 times that of the innermost layer, and tensile elastic strength parallel to grain of the outermost layer is 2-3 times that of the innermost layer. The bamboo age has a certain correlation with the mechanical properties of the moso bamboo, and the mechanical properties show a parabolic change with the increase of the bamboo age. The 4-year-old moso bamboo is in the best state. Compared with four kinds of bamboo, it is found that a bamboo stalk part will affect the density, dry shrinkage rate, strength and other physical and mechanical properties of the bamboo. The altitude and the slope direction have significant influences on the main properties of the moso bamboo, such as compression resistance and bending resistance parallel to grain.
1031 Therefore, the species, ages, growth characteristics, bamboo stalks, external environments and other factors of bamboo will produce great variations in the bamboo, resulting in obvious differences in their appearance dimensions and various properties. The mixed use of the bamboo without distinguishing the appearance dimensions and the various properties of the bamboo will reduce the utilization rate and product performance of the bamboo, and it is also unfavorable for its processing. Therefore, the grading of bamboo is the key to efficient use of bamboo and production of high-performance products.
SUMMARY
1041 (I) Technical problems to be solved 1051 For the deficiencies in the prior art, the present disclosure provides a grading machine based on hardness modulus of a round bamboo and a method for using the same, which solve the problems that bamboo is inconvenient to grade and cannot be efficiently used.
1061 (II) Technical solution 1071 The present invention is realized by the following technical solution. A grading machine based on hardness modulus of a round bamboo includes a base. A side of an upper surface of the base is fixedly connected with a motor mounting plate. A middle part of an upper surface of the motor mounting plate is fixedly connected with a servo motor. A motor cover is sleeved on a periphery of the servo motor and is fixedly connected to an upper surface of a bottom cover, which is fixedly connected to a periphery of the base. A driving end of the servo motor penetrates through the base and is fixedly connected with a motor synchronizing wheel which is connected with two same driven synchronizing wheels through a synchronizing belt. Screw rods are all perpendicular to the upper surface of the base. Lower ends of the screw rods penetrate through the base and are fixedly connected to middle parts of the driven synchronizing wheels respectively. Two sides of the upper surface of the base are fixedly connected with vertical columns. Upper ends of the vertical columns are fixedly connected to two ends of an upper cross beam respectively. Upper ends of the screw rods are rotatably connected into the upper cross beam. An upper cover is sleeved on a periphery of the upper cross beam and is fixedly connected to top ends of the vertical columns through supporting rods. And the screw rods are threadly connected to two ends of a moving cross beam.
1081 In some embodiments, a lower end of the base may be fixedly connected with a host machine bracket. Four corners of a lower surface of the host machine bracket may be fixedly connected with leveling feet. An emergency stop button may be provided on a side of the upper surface of the bottom cover and may be electrically connected with the servo motor.
109] In some embodiments, the vertical columns may be respectively provided at outer sides of the screw rods. The vertical columns may be provided at their peripheries with outer covers respectively. Inner sides of the screw rods may be respectively provided with protective covers. The protective covers may be fixedly connected with the outer cover. Bottom ends of the outer covers and the protective covers may be fixedly connected to the bottom cover, Top ends of the outer covers and the protective covers may be fixedly connected to the upper cover. The outer covers may be provided on their outer sides with sliding rods respectively. The sliding rods each may be slidably connected with two limit switches from top to bottom. Each of two ends of the moving cross beam may be located between the two limit switches. And the limit switches may be electrically connected with the servo motor.
1101 In some embodiments, a side of the moving cross beam may be fixedly connected with a push-pull support through a nut. An upper surface of the push-pull support may be fixedly connected with a push-pull cylinder. A middle part of an upper surface of the moving cross beam may be fixedly connected with a fixed sliding seat. An upper end of the fixed sliding seat may be slidably connected with a moving tray. An upper surface of the moving tray may be fixedly connected with a clamping cylinder. A lower pressing plate may be provided within an upper end of the clamping cylinder A round bamboo test sample may be arranged on a middle part of an upper surface of the lower pressing plate. And the push-pull cylinder may be fixedly connected to a side of the moving tray through a tray connecting rod.
1111 In some embodiments, a middle part of a lower surface of the upper cross beam may be fixedly connected with a load sensor. A V-shaped pressing head may be fixedly connected to a lower end of the load sensor and may be arranged right above the lower pressing plate.
1121 In some embodiments, a middle part of a top end of the upper cross beam may be fixedly connected to an end of a camera bracket. An other end of the camera bracket may be fixedly connected with a photographing camera. A lower end of the photographing camera may be provided with an optical lens. A lampshade may be provided on a periphery of the photographing camera and may be fixedly connected to the other end of the camera bracket away from the upper cross beam through a pull rod. A ring light source may be arranged at a lower end of an inner middle part of the lampshade and may be arranged right below the optical lens. and a camera cover may be provided on a periphery of the camera bracket, and may be connected with the lampshade.
1131 In some embodiments, encoder connection shafts may be respectively arranged on middle parts of two sides of the upper cross beam and at the top ends of the screw rods. Top ends of the encoder connection shafts may be fixedly connected with encoder seats respectively. A photoelectric encoders may be respectively provided on atop ends of the encoder seats and may be arranged right above two ends of the moving cross beam.
1141 The present invention also provides a method for using the grading machine based on the hardness modulus of the round bamboo includes the following use steps: Si, placing a round bamboo test sample inside the lower pressing plate, and clamping, by the clamping cylinder, the lower pressing plate, when the hardness modulus of the round bamboo is tested; S2, starting the servo motor to drive the motor synchronizing wheel to rotate, so that the motor synchronizing wheel drives the driven synchronizing wheels through the synchronizing belt to rotate, the driven synchronizing wheels in turn drive the screw rods to rotate, and the screw rods drive the moving cross beam to move up and down; S3, pushing and pulling the moving tray by the push-pull cylinder, to cause the moving tray to slide on the fixed sliding seat such that the round bamboo test sample is located right below the ring light source, and then the moving cross beam moves up and down to capture images of the round bamboo test sample by the photographing camera for detection; S4, stoping the servo motor by the limit switches, when the moving cross beam moves up and down and if the moving cross beam touches the limit switches, so that the moving cross beam has limited positions during motion; and detecting by the photoelectric encoders, a displacement of the moving cross beam when the moving cross beam moves; S5, pulling the push-pull cylinder by the moving tray back to the position right below the V-shaped pressing head and moving up the moving cross beam after the test on the round bamboo test sample is completed, such that the V-shaped pressing head presses the round bamboo test sample; detecting a pressure from the V-shaped pressing head to the round bamboo test sample by the load sensor; and moving down the moving cross beam by the rotation of the screw rods and separating the moving cross beam from the V-shaped pressing head after the hardness pressure test is ended; and S6, obtaining the hardness modulus of the round bamboo test sample by calculating and grading the round bamboo with reference to a grading standard.
1151 (III) Beneficial effects [16] The present disclosure provides a grading machine based on hardness modulus of a round bamboo and a method for using the same. The embodiments have the following beneficial effects.
1171 In the embodiments, the round bamboo test sample is placed inside the lower pressing plate, the lower pressing plate is clamped and fixed by the clamping cylinder, the push-pull cylinder pushes the lower pressing plate so that the round bamboo test sample is under the photographing camera and the optical lens, and then the servo motor adjusts a position of the round bamboo test sample by the motor synchronizing wheel, the driven synchronizing wheels, the screw rods, and the moving cross beam in sequence, so as to photographing the wall thickness, the size, and the circle center of the round bamboo test sample for measurement. The round bamboo test sample is fixed right below the V-shaped pressing head by the moving cross beam and the push-pull cylinder, and the V-shaped pressing head exerts a pressure on the round bamboo. Moreover, the load sensor monitors a pressure value when the V-shaped pressing head acts on the round bamboo test sample, the photoelectric encoders detect the displacement of the moving cross beam and all parameters of the round bamboo test sample are calculated to obtain the hardness modulus of the round bamboo test sample and in turn realize effective grading of the round bamboo, so that the bamboo can be used to the maximum extent during use and thus can be effectively used, and the grading machine and its using method are worthy of being greatly popularized.
BRIEF DESCRIPTION OF THE DRAWINGS
1181 FIG. I is a schematic side view of a structure of the present disclosure; [19] FIG. 2 is a schematic front view of the structure of the present disclosure and 1201 FIG. 3 is a schematic top view of the structure of the present disclosure.
1211 List of the reference characters: I_ leveling foot; 2 host machine bracket; 3 synchronizing belt; 4 bottom cover; 5 motor synchronizing wheel; 6 emergency stop button; 7 base; 8 servo motor; 9 motor cover; 10 moving cross beam; 11 moving tray 12 clamping cylinder; 13 lower pressing plate; 14 fixed sliding seat; 15 lampshade; 16 ring light source; 17 pull rod; 18 optical lens; 19 camera bracket; 20 photographing camera; 21: camera cover; 22 upper cross beam; 23 upper cover; 24 photoelectric encoder; 25 supporting rod; 26 load sensor; 27 V-shaped pressing head; 28 tray connecting rod; 29 push-pull support; 30 push-pull cylinder; 31 driven synchronizing wheel; 32 screw rod; 33 vertical column; 34 limit switch; 35 encoder seat; 36 encoder connection shaft; 37 round bamboo test sample; 38 outer cover; 39 protective cover; 40 motor mounting plate; and 41 sliding rod.
DETAILED DESCRIPTION OF THE EMBODIMENTS
1221 The technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present disclosure. It is apparent that the described embodiments are only a part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments of the present disclosure, all other embodiments, which can be obtained by those ordinarily skilled in the art without inventive effort, are within the protection scope of the present disclosure.
1231 Embodiments 1241 As shown in FIG. 1 to FIG. 3, the embodiments of the present disclosure provide a grading machine based on hardness modulus of a round bamboo, which includes a base 7. A side of an upper surface of the base 7 is fixedly connected with a motor mounting plate 40 which is configured to fix a servo motor 8. A middle part of an upper surface of the motor mounting plate 40 is fixedly connected with the servo motor 8. A periphery of the servo motor 8 is sleeved with a motor cover 9 which is configured to protect the servo motor 8. The motor cover 9 is fixedly connected to an upper surface of a bottom cover 4 which is fixedly connected to a periphery of the base 7. A driving end of the servo motor 8 penetrates through the base 7 and is fixedly connected with a motor synchronizing wheel 5 which is able to drive screw rods 32 through a synchronizing belt 3 and driven synchronizing wheels 31. The motor synchronizing wheel 5 is connected with two same driven synchronizing wheels 31 through the synchronizing belt 3, the screw rods 32 are all perpendicular to the upper surface of the base 7. A lower end of each of the screw rods 32 penetrates through the base 7 and is fixedly connected to a middle part of each of the driven synchronizing wheels 31. The screw rods 32 are rotatably connected to the base 7 through bearings, so that when the screw rods 32 rotate, a moving cross beam 10 can move up and down. Two sides of an upper surface of the base 7 are fixedly connected with vertical columns 33 respectively which are configured to support an upper cross beam 22. The vertical columns 33 are fixedly connected to the upper surface of the base 7, and also are configured to support and bear the whole grading machine based on hardness modulus of a round bamboo. Upper ends of the vertical columns 33 are fixedly connected to two ends of the upper cross beam 22 respectively, which is configured to not only stabilize top ends of the screw rods 32, but also can-y a camera bracket 19 and a load sensor 26. Upper ends of the screw rods 32 are rotatably connected into the upper cross beam 22. A periphery of the upper cross beam 22 is sleeved with an upper cover 23. The upper cover 23 is configured to make the machine attractive and enable the machine to operate safely. and is fixedly connected to the top ends of the vertical columns 33 through supporting rods 25. And the screw rods 32 are threadly connected to two ends of the moving cross beam 10.
1251 A lower end of the base 7 is fixedly connected with a host machine bracket 2.
Four corners of a lower surface of the host machine bracket 2 are fixedly connected with leveling feet I. A side of the upper surface of the bottom cover 4 is provided with an emergency stop button 6 and is electrically connected with the servo motor 8. The host machine bracket 2 can support the grading machine equipment. The leveling feet 1 is configured to keep the grading machine based on the hardness modulus of a round bamboo hardness leveled on different grounds to enable the machine to operate steadily. When the machine operates abnormally, the emergency stop button 6 is pressed to stop the operation of the machine immediately.
1261 The vertical columns 33 are respectively provided at outer sides of the screw rods 32. The vertical columns 33 are provided at their peripheries with outer covers 38 respectively which is configured to protect the cleanness and the safety of the machine and make the machine attractive Inner sides of the screw rods 32 are respectively provided with protective covers 39. The protective covers 39 are fixedly connected with the outer cover 38. Bottom ends of the outer covers 38 and the protective covers 39 are fixedly connected to the bottom cover 4. Top ends of the outer covers 38 and the protective covers 39 are fixedly connected to the upper cover 23. The outer covers 38 are provided on their outer sides with sliding rods 41 respectively. The sliding rods 41 each are slidably connected with two limit switches 34 from top to bottom. And each of two ends of the moving cross beam 10 is located between the two limit switches 34. And the limit switches 34 are electrically connected with the servo motor 8. When the moving cross beam 10 moves up and down, in order to avoid the machine from being damaged by a fact that the moving cross beam 10 is beyond a moving range, the limit switches 34 are provided above and below the moving cross beam 10. If the moving cross beam 10 is beyond the moving range, the limit switches 34 cause the servo motor 8 to stop moving, so as to enable the moving cross beam 10 to stop.
1271 A side of the moving cross beam 10 is fixedly connected with a push-pull support 29 through a nut. An upper surface of the push-pull support 29 is fixedly connected with a push-pull cylinder 30. A middle part of an upper surface of the moving cross beam 10 is fixedly connected with a fixed sliding seat 14. An upper end of the fixed sliding seat 14 is slidably connected with a moving tray 11. An upper surface of the moving tray 11 is fixedly connected with a clamping cylinder 12. A lower pressing plate 13 is provided within an upper end of the clamping cylinder 12. A round bamboo test sample 37 is arranged on a middle part of an upper surface of the lower pressing plate 13. And the push-pull cylinder 30 is fixedly connected to a side of the moving tray 11 through a tray connecting rod 28. When the round bamboo test sample 37 is tested, the lower pressing plate 13 is located right below the photographing camera 20 by the push-pull cylinder 30, and the size, wall thickness and other parameters of the round bamboo test sample 37 are collected by the photographing camera 20, the optical lens 18, and the ring light source 16.
1281 A middle part of a lower surface of the upper cross beam 22 is fixedly connected with a load sensor 26. A V-shaped pressing head 27 is fixedly connected to a lower end of the load sensor 26 and is arranged right above the lower pressing plate 13. When the V-shaped pressing head 27 presses the round bamboo test sample 37, the load sensor 26 can detect a value of a force that presses the round bamboo test sample 37, and then a pressure is collected.
1291 A middle part of a top end of the upper cross beam 22 is fixedly connected to one end of the camera bracket 19. The other end of the camera bracket 19 is fixedly connected with the photographing camera 20. A lower end of the photographing camera 20 is provided with an optical lens 18. A lampshade 15 is provided on a periphery of the photographing camera 20 and is fixedly connected to an end of the camera bracket 19 away from the upper cross beam 22 by a pull rod 17. A ring light source 16 is arranged at a lower end of an inner middle part of the lampshade 15 and is arranged right below the optical lens 18. A camera cover 21 is provided on a periphery of the camera bracket 19 and is connected with the lampshade 15. The photographing camera 20 can well detect the round bamboo test sample 37 by the camera bracket 19.
1301 Encoder connection shafts 36 are respectively arranged on middle parts of two sides of the upper cross beam 22 and at the top ends of the screw rods 32. Top ends of the encoder connection shafts 36 are fixedly connected with encoder seats 35 respectively. A photoelectric encoders 24 are respectively provided on atop ends of the encoder seats 35 and are arranged right above two ends of the moving cross beam 10. A displacement of the up-and-down motion of the moving cross beam 10 can be measured by the photoelectric encoders 24, so as to record data. All the parameters of the round bamboo test sample 37 are calculated with certain formulas, so that the hardness modulus of the round bamboo test sample 37 is well calculated, and the round bamboo is well graded.
1311 A method for using grading machine based on hardness modulus of a round bamboo includes the following use steps S1-S6.
1321 In step S 1, when the hardness modulus of the round bamboo is tested, a round bamboo test sample 37 is placed inside the lower pressing plate 13, and the lower pressing plate 13 is clamped by the clamping cylinder 12; 1331 In step S2, the servo motor 8 is started to drive the motor synchronizing wheel 5 to rotate, so that the motor synchronizing wheel 5 drives the driven synchronizing wheels 31 by the synchronizing belt 3 to rotate, the driven synchronizing wheels 31 in turn drive the screw rods 32 to rotate, and the screw rods 32 drive the moving cross beam 10 to move up and down; 1341 In step S3, the moving tray 11 is pushed and pulled by the push-pull cylinder 30 to cause the moving tray 11 to slide on the fixed sliding seat 14 such that the round bamboo test sample 37 is located right below the ring light source 16, and then the moving cross beam 10 moves up and down to capture images of the round bamboo test sample 37 by the photographing camera 20 for detection.
1351 In step S4, when the moving cross beam 10 moves up and down and if the moving cross beam 10 touches the limit switches 34, the servo motor 8 can be stopped by the limit switches 34, so that the moving cross beam 10 has limited positions during motion; and detecting by the photoelectric encoders 24, a displacement of the moving cross beam 10 when the moving cross beam 10 moves.
1361 In step 55, after the test on the round bamboo test sample 37 is completed, the push-pull cylinder 30 pulls the moving tray 11 back to the position right below the V-shaped pressing head 27, and the moving cross beam 10 moves up, such that the V-shaped pressing head 27 presses the round bamboo test sample 37; a pressure from the V-shaped pressing head 27 to the round bamboo test sample 37 is detected the load sensor 26; and after the hardness pressure test is ended, the moving cross beam 10 moves down by the rotation of the screw rods 32 and is separated from the V-shaped pressing head 27.
[37] In step 56, the hardness modulus of the round bamboo test sample 37 is obtained by calculating, and the round bamboo is graded with reference to a grading standard. The grading standard may be a round bamboo grading standard set in the industry or by the country.
[38] Although the embodiments of the present disclosure have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the present disclosure. The scope of the present disclosure is defined by the attached claims.

Claims (8)

  1. WHAT IS CLAIMED IS: 1. A grading machine based on hardness modulus of a round bamboo, comprising a base (7), wherein a side of an upper surface of the base (7) is fixedly connected with a motor mounting plate (40), a middle part of an upper surface of the motor mounting plate (40) is fixedly connected with a servo motor (8), a motor cover (9) is sleeved on a periphery of the servo motor (8) and is fixedly connected to an upper surface of a bottom cover (4), which is fixedly connected to a periphery of the base (7), a driving end of the servo motor (8) penetrates through the base (7) and is fixedly connected with a motor synchronizing wheel (5) which is connected with two same driven synchronizing wheels (31) through a synchronizing belt (3), screw rods (32) are all perpendicular to the upper surface of the base (7), lower ends of the screw rods (32) penetrate through the base (7) and are fixedly connected to middle parts of the driven synchronizing wheels (31) respectively, two sides of the upper surface of the base (7) are fixedly connected with vertical columns (33), upper ends of the vertical columns (33) are fixedly connected to two ends of an upper cross beam (22) respectively, upper ends of the screw rods (32) are rotatably connected into the upper cross beam (22), an upper cover (23) is sleeved on a periphery of the upper cross beam (22) and is fixedly connected to top ends of the vertical columns (33) through supporting rods (25), and the screw rods (32) are threadly connected to two ends of a moving cross beam (10).
  2. 2. The grading machine based on the hardness modulus of the round bamboo according to claim 1, wherein a lower end of the base (7) is fixedly connected with a host machine bracket (2), four corners of a lower surface of the host machine bracket (2) are fixedly connected with leveling feet (1), an emergency stop button (6) is provided on a side of the upper surface of the bottom cover (4), and is electrically connected with the servo motor (8).
  3. 3. The grading machine based on the hardness modulus of the round bamboo according to claim 1, wherein the vertical columns (33) are respectively provided at outer sides of the screw rods (32), the vertical columns (33) are provided at their peripheries with outer covers (38) respectively, inner sides of the screw rods (32) are respectively provided with protective covers (39); the protective covers (39) are fixedly connected with the outer cover (38), bottom ends of the outer covers (38) and the protective covers (39) are fixedly connected to the bottom cover (4), top ends of the outer covers (38) and the protective covers (39) are fixedly connected to the upper cover (23), the outer covers (38) are provided on their outer sides with sliding rods (41) respectively; the sliding rods (41) each are slidably connected with two limit switches (34) from top to bottom, and each of two ends of the moving cross beam (10) is located between the two limit switches (34); and the limit switches (34) are electrically connected with the servo motor (8)
  4. 4. The grading machine based on the hardness modulus of the round bamboo according to claim 1, wherein a side of the moving cross beam (10) is fixedly connected with a push-pull support (29) through a nut; an upper surface of the push-pull support (29) is fixedly connected with a push-pull cylinder (30), a middle part of an upper surface of the moving cross beam (10) is fixedly connected with a fixed sliding seat (14), an upper end of the fixed sliding seat (14) is slidably connected with a moving tray (11), an upper surface of the moving tray (11) is fixedly connected with a clamping cylinder (12), a lower pressing plate (13) is provided within an upper end of the clamping cylinder (12), a round bamboo test sample (37) is arranged on a middle part of an upper surface of the lower pressing plate (13), and the push-pull cylinder (30) is fixedly connected to a side of the moving tray (11) through a tray connecting rod (28)
  5. 5. The grading machine based on the hardness modulus of the round bamboo according to claim 1, wherein a middle part of a lower surface of the upper cross beam (22) is fixedly connected with a load sensor (26), a V-shaped pressing head (27) is fixedly connected to a lower end of the load sensor (26), and is arranged right above the lower pressing plate (13).
  6. 6. The grading machine based on the hardness modulus of the round bamboo according to claim 1, wherein a middle part of a top end of the upper cross beam (22) is fixedly connected to an end of a camera bracket (19); an other end of the camera bracket (19) is fixedly connected with a photographing camera (20), a lower end of the photographing camera (20) is provided with an optical lens (18), a lampshade (15) is provided on a periphery of the photographing camera (20) and is fixedly connected to the other end of the camera bracket (19) away from the upper cross beam (22) through a pull rod (17), a ring light source (16) is arranged at a lower end of an inner middle part of the lampshade (15) and is arranged right below the optical lens (18), and a camera cover (21) is provided on a periphery of the camera bracket (19), and is connected with the lampshade (15).
  7. 7. The grading machine based on the hardness modulus of the round bamboo according to claim 1, wherein encoder connection shafts (36) are respectively arranged on middle parts of two sides of the upper cross beam (22) and at the top ends of the screw rods (32), top ends of the encoder connection shafts (36) are fixedly connected with encoder seats (35) respectively, a photoelectric encoders (24) are respectively provided on atop ends of the encoder seats (35) and are arranged right above two ends of the moving cross beam (10).
  8. 8. A method for using the grading machine based on the hardness modulus of the round bamboo according to claim 1, comprising following steps of: placing a round bamboo test sample (37) inside the lower pressing plate (13), and clamping, by the clamping cylinder (12), the lower pressing plate (3), when the hardness modulus of the round bamboo is tested; starting the servo motor (8) to drive the motor synchronizing wheel (5) to rotate, so that the motor synchronizing wheel (5) drives the driven synchronizing wheels (31) through the synchronizing belt (3) to rotate, the driven synchronizing wheels (31) in turn drive the screw rods (32) to rotate, and the screw rods (32) drive the moving cross beam (10) to move up and down; pushing and pulling the moving tray (11) by the push-pull cylinder (30), to cause the moving tray (11) to slide on the fixed sliding seat (14) such that the round bamboo test sample (37) is located right below the ring light source (16), and then the moving cross beam (10) moves up and down to capture images of the round bamboo test sample (37) by the photographing camera (20) for detection; stoping the servo motor (8) by the limit switches (34), when the moving cross beam (10) moves up and down and if the moving cross beam (10) touches the limit switches (34), so that the moving cross beam (10) has limited positions during motion; and detecting by the photoelectric encoders (24), a displacement of the moving cross beam (10) when the moving cross beam (10) moves; pulling the push-pull cylinder (30) by the moving tray (1) back to the position right below the V-shaped pressing head (27) and moving up the moving cross beam (10) after the test on the round bamboo test sample (37) is completed, such that the V-shaped pressing head (27) presses the round bamboo test sample (37), detecting a pressure from the V-shaped pressing head (27) to the round bamboo test sample (37) by the load sensor (26); and moving down the moving cross beam (10) by the rotation of the screw rods (32) and separating the moving cross beam (10) from the V-shaped pressing head (27) after the hardness pressure test is ended; and obtaining the hardness modulus of the round bamboo test sample (37) by calculating and grading the round bamboo with reference to a grading standard.
GB2112939.0A 2020-09-27 2021-09-10 Grading machine based on hardness modulus of round bamboo and method for using the same Active GB2599231B (en)

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CN202011030512.4A CN112051169A (en) 2020-09-27 2020-09-27 Round bamboo hardness modulus grader and use method thereof

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Publication number Priority date Publication date Assignee Title
CN109807077A (en) * 2019-03-27 2019-05-28 湖南省林业科学院 A kind of thick bamboo tube intelligence thickness measuring screening installation
CN114383963A (en) * 2021-12-15 2022-04-22 迈格仪器(苏州)有限公司 Indentation reading method of micro Vickers hardness tester

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN208254982U (en) * 2018-06-15 2018-12-18 三明惊石农业科技有限公司 A kind of hardness-testing device suitable for plurality of specifications bamboo shoots
CN212748605U (en) * 2020-06-17 2021-03-19 福建省青晨竹业有限公司 Hardness detection equipment for bamboo-wood composite floor of container

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN208254982U (en) * 2018-06-15 2018-12-18 三明惊石农业科技有限公司 A kind of hardness-testing device suitable for plurality of specifications bamboo shoots
CN212748605U (en) * 2020-06-17 2021-03-19 福建省青晨竹业有限公司 Hardness detection equipment for bamboo-wood composite floor of container

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CN112051169A (en) 2020-12-08
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