CN113252492A - Rotary sisal hemp blade cutting test bed - Google Patents
Rotary sisal hemp blade cutting test bed Download PDFInfo
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- CN113252492A CN113252492A CN202110530960.9A CN202110530960A CN113252492A CN 113252492 A CN113252492 A CN 113252492A CN 202110530960 A CN202110530960 A CN 202110530960A CN 113252492 A CN113252492 A CN 113252492A
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- circular guide
- cutting
- sisal hemp
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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
- G01N3/58—Investigating machinability by cutting tools; Investigating the cutting ability of tools
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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
- G01N3/02—Details
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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
- G01N3/02—Details
- G01N3/04—Chucks
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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
- G01N3/02—Details
- G01N3/06—Special adaptations of indicating or recording means
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- 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
- G01N2203/003—Generation of the force
- G01N2203/0053—Cutting or drilling tools
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- 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
- G01N2203/04—Chucks, fixtures, jaws, holders or anvils
- G01N2203/0423—Chucks, fixtures, jaws, holders or anvils using screws
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- 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
Abstract
The invention provides a rotary sisal hemp blade cutting test bed which can change test parameters such as cutting speed, blade sliding angle, sisal hemp blade inclination angle and the like according to requirements and obtain test results under different working conditions, wherein a horizontal rotary motion system of the rotary sisal hemp blade cutting test bed comprises a circular guide rail which is rotatably arranged on a circular guide rail disc and a horizontal driving device which is used for driving the circular guide rail to rotate around the axis of the circular guide rail relative to the circular guide rail disc 17; the vertical motion system comprises a first motor, a lead screw, a nut seat and the like, wherein the first motor drives the horizontal rotation motion system to move up and down along the linear guide rail; the cutting and data acquisition system comprises a triaxial force sensor which is electrically connected with a computer and fixed on the circular guide rail, and a cutting blade positioned on the inner peripheral part of the circular guide rail is connected with the triaxial force sensor; the sisal hemp blade fixing device comprises a supporting column penetrating through the circular guide rail, a blade clamping frame connected to the supporting column, and an upper clamping block which is vertically opposite to the lower clamping block and can move relative to the lower clamping block.
Description
Technical Field
The invention belongs to a test device of a cutting device of agricultural and forestry crops, and particularly relates to a rotary sisal hemp blade cutting test bed.
Background
Sisal is a perennial monocot hard fiber crop, mainly grown in tropical and subtropical regions. The biomass such as hard fiber obtained from sisal hemp leaves can be applied to important fields such as textile, composite materials, energy and pharmacy. The harvesting of the sisal hemp leaves is a prerequisite for any application, and the harvesting of the sisal hemp leaves is still completely finished manually at present, so that the sisal hemp leaves not only become labor-intensive industries, but also are a main factor causing overhigh production cost. Therefore, the realization of mechanized harvesting of sisal hemp leaves has important significance for improving the yield efficiency and reducing the production cost. The mechanical properties of the material to be cut and the cutting force and energy required to be obtained are the main criteria for designing harvesting machines. Aiming at the growth form and the structural characteristics of the sisal hemp blades, the rotary sisal hemp blade cutting test bed is designed, the influence of the cutting speed, the sliding cutting angle of the blade, the inclination angle of the sisal hemp blades and the blade type on the cutting mechanical characteristics of the sisal hemp blades is obtained through a cutting test, and the value of the optimal cutting factor is obtained, so that the rotary sisal hemp blade cutting test bed has important significance on the development of sisal hemp blade harvesting machinery.
Disclosure of Invention
The invention aims to provide a rotary sisal hemp blade cutting test bed which is simple in structure and capable of changing test parameters such as cutting speed, blade sliding angle, sisal hemp blade inclination angle and the like according to needs to obtain test results under different working conditions.
The invention relates to a rotary sisal hemp blade cutting test bed, which comprises a horizontal rotary motion system 100, a vertical motion system 200, a cutting and data acquisition system 300, a sisal hemp blade fixing device 400 and a frame 24;
the horizontal rotary motion system 100 comprises a circular guide rail 19 rotatably arranged on a circular guide rail disc 17, and a horizontal driving device for driving the circular guide rail 19 to rotate around the axis of the circular guide rail relative to the circular guide rail disc 17;
the vertical motion system 200 comprises a motor I1, a screw rod 5 rotationally arranged on a rack 24, a nut seat 8 matched with the screw rod 5, a linear guide rail 11 connected to the rack 24 and a slide block 10 in sliding fit with the linear guide rail 11; the nut seat 8 and the sliding block 10 are both connected with a circular guide rail disc 17 in the horizontal rotary motion system 100, the motor I1 acts, the lead screw 5 rotates, and the nut seat 8 drives the horizontal rotary motion system 100 to move up and down along the linear guide rail 11;
the cutting and data acquisition system 300 includes a cutting blade 22, a triaxial force sensor 16, and a computer; a triaxial force sensor 16 electrically connected with a computer is fixed on a circular guide rail 19 in the horizontal rotary motion system, and a cutting blade 22 positioned on the inner peripheral part of the circular guide rail 19 is detachably connected on the triaxial force sensor 16;
the sisal hemp blade fixing device 400 comprises a supporting column 15, a blade clamping frame 186, an upper clamping block 185 and a lower clamping block 184, wherein the supporting column 15 is connected to the machine frame 24 and penetrates through the circular guide rail 19, the blade clamping frame 186 is connected to the supporting column 15, the upper clamping block 185 is vertically opposite to the lower clamping block 184 and can move relative to the lower clamping block 184, the lower clamping block 184 is fixed on the blade clamping frame 186, and arc-shaped grooves are formed in opposite surfaces of the upper clamping block 185 and the lower clamping block 184.
As an improvement, in the above-mentioned rotary sisal hemp blade cutting test bed, the horizontal driving device comprises a second motor 6, a pinion 173 and a bull gear 172, an output shaft of the second motor is connected with the pinion 173, the pinion 173 is meshed with the bull gear 172, and the outer periphery of the circular guide rail 19 is provided with meshing teeth meshed with the bull gear.
In the above-described rotary sisal blade cutting test bed, the inner and outer circumferential sides of the circular guide 19 have inner and outer guide grooves 191 and 192, and a plurality of stopper bearings 171 provided in the circumferential direction of the circular guide 19 are respectively in rolling engagement with the inner and outer guide grooves 191 and 19, and the stopper bearings 171 are rotatably provided on the roller shaft 175 fixed to the circular guide plate 17.
As an improvement, in the rotary sisal hemp blade cutting test bed, the spring 12 is sleeved at the lower part of the linear guide rail 11.
The rotary sisal blade cutting test bench of claim 1, wherein: the sisal hemp blade fixing device 400 further comprises a first optical axis bracket 181 connected to the supporting column 15, an optical axis 182 fixed on the first optical axis bracket 181, a second optical axis bracket 183 vertically swinging relative to the optical axis 182, and a blade clamping frame 186 fixed on the second optical axis bracket 183.
As an improvement, in the above-mentioned rotary sisal hemp blade cutting test bed, the frame 24 is formed by connecting the section bar and the corner brace by the bolt, the upper and lower ends of the support column 15 are detachably connected to the cross bar 241 in the frame 24 by the bolt, and the connecting position of the support column 15 on the cross bar can be adjusted; the cross bar 241 is detachably connected to a longitudinal bar 242 in the frame 24 through bolts, and the connection position of the cross bar 241 on the longitudinal bar 242 can be adjusted; the first optical axis bracket 181 is detachably connected to the support column 15 through a mounting bolt 188; the connecting position of the first optical axis bracket 181 on the supporting column 15 can be adjusted; the cross bar 241, the longitudinal bar 242 and the support column 15 are all section bars.
The invention has the beneficial effects that: in operation, the rotating speed of the cutting blade 22 is adjusted by adjusting the rotating speed of the motor II 6, and the vertical movement speed of the cutting blade 22 is adjusted by adjusting the speed of the motor I1. The cutting blade 22 may be exchanged according to the pattern of the cutting edge. During the test, the sisal hemp blade is fixed between the upper clamping block 185 and the lower clamping block 184 of the blade clamping frame 186, the rotating speed and the vertical moving speed of the cutting blade 22 are set, the first motor 1 and the second motor 6 are started to perform the cutting test according to the relative position of the cutting blade 22 and the sisal hemp blade, and the cutting blade 22 cuts the clamped sisal hemp blade. The triaxial force sensor 16 measures and records the relation curve of the cutting force and the time in three axial directions in the cutting process, the relation curve is stored in a computer, and the cutting energy consumption in the cutting process can be obtained through calculation. The invention can realize the influence of different cutting speeds, blade sliding angles, blade inclination angles and blade types on the mechanical cutting characteristics of the sisal hemp blades, researches the influence rules of various cutting factors on the cutting force and the cutting energy consumption, obtains the value of the optimal cutting factor for simultaneously reducing the cutting force and the cutting energy consumption through reasonable test design, and provides important basis for designing sisal hemp blade harvesting machinery.
Since the section contour at the cutting position of the sisal hemp blade is irregular (figure 11), an upper clamping block 185 and a lower clamping block 184 with arc-shaped grooves are designed by extracting and fitting the contour. The base of the sisal blade can be more easily inserted into the arc-shaped groove spaces of the opposing upper and lower clamping blocks 185, 184 and clamped by the relatively moving upper and lower clamping blocks 185, 184.
Because the angles of the sisal hemp blades growing on different layers and the matrix are different (figure 10), the invention designs the optical axis 182, the optical axis bracket I181 and the optical axis bracket II 183 to adjust and fix the inclination angle of the sisal hemp blades. The height of the sisal hemp blade clamp can be adjusted by adjusting the up-down position of a mounting bolt 188 for fixing the first optical axis bracket 181 on the supporting column 15. The second optical axis bracket 183 can be fixed to the optical axis 182 using a locking bolt 187. The included angle between the opening direction of the sisal hemp blade clamping frame 186 and the supporting column 15 is the inclination angle of the sisal hemp blade, when the inclination angles of different sisal hemp blades are adjusted, the locking bolts 187 on the second optical axis bracket 183 are loosened, then the opening direction of the blade clamping frame 186 is adjusted, and finally the locking bolts 187 on the second optical axis brackets 183 are screwed down, so that the fixing and the adjustment of the inclination angle of the sisal hemp blade are realized.
The spring 12 is arranged below the linear guide rail 11, and the spring 12 can play a role in buffering the falling circular guide rail disc 17 after accidental sliding, so that the circular guide rail disc 17 is ensured not to be damaged.
The frame 24 is formed by connecting sectional materials and corner connectors by bolts, and is convenient to disassemble and assemble and low in cost. By changing different fixing positions of the supporting columns 15 on the cross rods 241 and/or changing different fixing positions of the cross rods 241 on the longitudinal rods 242, the relative positions of the sisal hemp blade fixing device relative to the circular guide rail 19 and the cutting blades 22 can be changed, and tests can be carried out under different working conditions.
Drawings
FIG. 1 is a perspective view of a rotary sisal blade cutting test bed;
FIG. 2 is another perspective view of a rotary sisal blade cutting test bed;
FIG. 3 is a perspective view of a horizontal rotary motion system, a vertical motion system, a cutting and data acquisition system, a frame, etc.;
FIG. 4 is a perspective view of a horizontal rotary motion system, vertical motion system frame, etc.;
FIG. 5 is a perspective view of a horizontal rotary motion system, cutting and data acquisition system, sisal blade fixation device, etc.;
FIG. 6 is a schematic view of a horizontal rotary motion system (with the circular rail cover removed);
FIG. 7 is a cross-sectional view A-A of FIG. 6;
FIG. 8 is a schematic view of a sisal blade fixing device, etc.;
FIG. 9 is another schematic view of a sisal blade retention device;
FIG. 10 is a schematic view of sisal;
FIG. 11 is a schematic view of a sisal blade.
In the figure, 100-horizontal rotation movement system, 200-vertical movement system, 300-cutting and data acquisition system, 400-sisal hemp blade fixing device, 500-supporting and protecting device,
1-motor one, 2-shaft coupling, 3-motor base one, 4-motor fixing plate, 5-lead screw, 6-motor two, 7-motor base two, 8-nut base, 9-right-angle plate, 10-slide block, 11-linear guide rail, 12-spring, 13-supporting base, 14-angle code, 15-supporting column, 16-three-axis force sensor, 17-circular guide rail disc, 18-circular guide rail cover plate, 19-circular guide rail, 191-inner guide groove, 192-outer guide groove, 20-connecting plate, 21-blade clamp, 22-cutting blade, 23-protective net, 24-frame, 241-horizontal rod, 242-longitudinal rod, 25-fixing base, 171-limit bearing, 172-large gear, 173-small gear, 174-circular guide rail support, roller shaft 175, 181-optical shaft support one, 183-optical shaft support two, 182-optical shaft, 184-lower clamping block, 185-upper clamping block, 186-blade clamping frame, 187-locking bolt, 188-mounting bolt.
Detailed Description
Referring to fig. 1 and 2, the rotary sisal hemp blade cutting test bed mainly comprises a horizontal rotary motion system 100, a vertical motion system 200, a cutting and data acquisition system 300, a sisal hemp blade fixing device 400 and a supporting and protecting device 500.
Horizontal rotational movement system 100:
referring to fig. 5-7, the horizontal rotary motion system 100 is mainly composed of a second motor 6, a pinion 173, a bull gear 172, a circular guide support 174, a circular guide plate 17, a plurality of limit bearings 171, a roller shaft 175, a circular guide cover plate 18, a circular guide 19, and a limit bearing 171. The circular guide rail support 174 is fixedly connected to one side (which may be integrally connected) of the circular guide rail disc 17, the pinion 173 and the bull gear 172 are rotatably disposed on the circular guide rail support 174, the output shaft of the second motor connected to the circular guide rail support 174 is connected to the pinion 173, the pinion 173 is engaged with the bull gear 172, and the upper portion of the outer side of the circular guide rail 19 is designed to be engaged with a toothed structure, which is engaged with the bull gear. The circular guide 19 has an inner guide groove 191 and an outer guide groove 192 at the lower part of the inner circumference side and the lower part of the outer circumference side, a plurality of stopper bearings 171 provided in the circumferential direction of the circular guide 19 are respectively in rolling engagement with the inner guide groove 191 and the outer guide groove 19, and the stopper bearings 171 are rotatably provided on the roller shaft 175 fixed to the circular guide plate 17. During the test, the second motor is operated to rotate the pinion 173, and the circular guide rail 19 can horizontally rotate under the action of the limit bearing 171. In order to protect the safety of the tester, a circular guide rail cover plate 18 is designed on the upper part of the circular guide rail disc 17. The rotating speed of the circular guide rail 19 can be realized by adjusting the rotating speed of the second motor 6.
Vertical movement system 200:
referring to fig. 3 and 4, the vertical movement system 200 mainly includes a first motor 1, a coupling 2, a first motor base 3, a motor fixing plate 4, a screw rod 5, a nut base 8, a supporting base 13, a sliding block 10, a linear guide rail 11, a fixing base 25, a right-angle plate 9 and a spring 12. The first motor 1, the coupler 2, the lead screw 5 and the nut seat 8 form a lead screw rotating system. The motor base I3, the motor fixing plate 4 and the supporting seat 13 are used for vertically fixing the screw rod rotating system on the frame 24. During testing, the first motor 1 works to enable the screw rods 5 connected together through the coupling 2 to rotate at a constant speed, and the nut seat 8 arranged on the screw rods 5 vertically moves linearly at a constant speed along with the rotation of the screw rods 5. The circular guide rail support 174 in the horizontal rotation motion system is connected with the nut seat 8, and the horizontal rotation motion system can perform uniform linear motion in the vertical direction under the driving of the nut seat 8. In order to ensure the stability of the horizontal rotary motion system, a right-angle plate 9 is used for connecting a circular guide rail support 174 or a circular guide rail disc 17 in the horizontal rotary motion system with a sliding block 10 on a linear guide rail 11, and the linear guide rail 11 is fixed on a frame 24 through a fixed seat 25. The spring 12 is located at the lower part of the linear guide 11 and mainly functions to prevent the horizontal rotary motion system from being positioned too low to cause collision with the frame 24.
Cutting and data acquisition system 300:
referring to fig. 5, the cutting and data acquisition system 300 generally includes a cutting blade 22, a triaxial force sensor 16, an attachment plate 20, and a computer, among other things. One end of the connecting plate 20 is fixed on the upper end surface of the circular guide rail 19, the other end of the connecting plate extends into the inner periphery of the circular guide rail 19 and is fixedly connected with the triaxial force sensor 16, and the cutting blade 22 is fixed on the triaxial force sensor 16 by using a screw. During the test, the cutting blade is driven by the circular guide rail 19 to do uniform circular motion. When the cutting blade 22 cuts the sisal hemp blade, the triaxial force sensor 16 records the cutting force in three axial directions in the process and the time relation curve, and the data is stored by using a computer.
Sisal hemp blade fixing device 400:
referring to fig. 8 and 9, the sisal hemp blade fixing device 400 mainly comprises a blade clamping frame 186, an upper clamping block 185, a lower clamping block 184, an optical axis 182, a first optical axis bracket 181 and a second optical axis bracket 183. Since the section contour at the cutting position of the sisal hemp blade is irregular (figure 11), an upper clamping block 185 and a lower clamping block 184 with arc-shaped grooves are designed by extracting and fitting the contour. Because the angles of the sisal hemp blades growing on different layers and the matrix are different (figure 10), the invention designs the optical axis 182, the optical axis bracket I181 and the optical axis bracket II 183 to adjust and fix the inclination angle of the sisal hemp blades. In the test, the base of the sisal blade is inserted into the space between the upper and lower clamping blocks 185, 184, and the upper clamping block 185 is pressed down using screws designed on the blade clamping bracket 186 until the sisal blade is clamped.
The sisal blade clamp is fixed on one side of the supporting column 15 by using a first optical axis bracket 181, an optical axis 182 and two second optical column brackets 183. The height of the sisal hemp blade clamp can be adjusted by adjusting the mounting bolt 188 which is arranged on the first optical axis bracket 181 and is in threaded fit with the supporting column 15. The second optical axis bracket 183 can be fixed to the optical axis 182 using a locking bolt 187. The included angle between the opening direction of the sisal hemp blade clamping frame 186 and the supporting column 15 is the inclination angle of the sisal hemp blade, when the inclination angles of different sisal hemp blades are adjusted, the locking bolts on the second optical axis bracket 183 are loosened, then the opening direction of the blade clamping frame 186 is adjusted, and finally the locking bolts on the second optical axis brackets 183 are screwed down, so that the fixing and the adjustment of the inclination angles of the sisal hemp blades are realized.
Support and protection device 500:
referring to fig. 2, 3 and 4, the support and protection device 500 is mainly composed of a frame 24 and a protection net 23. The frame 24 is formed by connecting the section bar and the corner brace 14 by bolts. The profiles in the machine frame comprise profiles such as a cross bar 241, a longitudinal bar 242 and the like. The support columns 15 are also profiles.
The upper end and the lower end of the support column 15 are detachably connected to the cross bar 241 through bolts, and the connecting position of the support column 15 on the cross bar can be adjusted; the two ends of the cross bar 241 are detachably connected between the two longitudinal bars 242 through bolts, and the connecting position of the cross bar 241 on the longitudinal bars 242 can be adjusted.
The horizontal rotational motion system, the vertical motion system, the cutting and data acquisition system, and the sisal blade fixation device are all connected to the frame 24. In order to prevent the cutting blade 22 from flying out due to damage and causing injury to the tester during testing, the protection net 23 is designed outside the frame 24 (only one protection net 23 is shown in the figure) so as to ensure the safety of the test to the tester.
The detailed movement process is as follows:
the invention relates to a rotary sisal hemp blade cutting test bed which comprises a second motor 6, wherein the second motor 6 is fixed on a circular guide rail support 174 through a second motor base 7, an output shaft of the second motor 6 is connected with a small gear 173, the small gear 173 is meshed with a large gear 172, the large gear 172 is meshed with an outer gear of a horizontally-installed circular guide rail 19, a triaxial force sensor 16 is connected with the circular guide rail 19 through a connecting plate 20, the movement of the circular guide rail 19 is restricted by a limiting bearing 171, and a cutting blade 22 is fixed on the triaxial force sensor 16 by using a screw. When the second motor 6 is operated, the cutting blade 22 can do uniform circular motion.
The motor I1 is fixed on the bracket 24 by the motor base I3 and the motor fixing plate 4 and is connected with the screw rod 5 by the coupler 2, and the lower end of the screw rod 5 is fixed by the supporting seat 13. The screw 5 is connected with the circular guide rail disc 17 through the nut seat 8, and when the motor I1 works, the nut seat 8 drives the horizontal rotation motion system to do uniform linear motion in the vertical direction on the screw 5. The linear guide rail 11 is fixed on the bracket 24 by the fixed seat 25, and the slide block 10 on the linear guide rail 11 is connected with the circular guide rail support 174 by the right-angle plate 9. The spring 12 is designed below the linear guide rail 11, and the spring 12 can relieve the falling speed of the circular guide rail disc 17 after accidental sliding, so that the circular guide rail disc 17 is prevented from being broken.
The sisal hemp blade is fixed inside a blade clamping frame 186 by an upper clamping block 185 and a lower clamping block 184, and the blade clamping frame 186 is fixed on one side of the supporting column 15 by a first optical axis bracket 181 and a second optical axis bracket 183 which are arranged on the optical axis 182. The angle brace 14 is used for fixing the protection net 23 around the bracket 24, so that the parts on the test bed are prevented from flying off and injuring the tester during work.
During operation, the rotating speed of the cutting blade 22 is realized by adjusting the rotating speed of the motor II 6, and the vertical movement speed of the cutting blade 22 is realized by adjusting the speed of the output shaft of the motor I1. The cutting blade 22 may be exchanged according to the pattern of the cutting edge. During the test, the sisal hemp blade is fixed in the blade clamping frame 186, the rotating movement speed and the vertical movement speed of the cutting blade 22 are set, the relative position of the cutting blade 22 and the sisal hemp blade is obtained through calculation, and the first motor 1 and the second motor 6 are started to perform the cutting test. The triaxial force sensor 16 measures and records the relation curve of the cutting force and the time in three axial directions in the cutting process, the relation curve is stored in a computer, and the cutting energy consumption in the cutting process can be obtained through calculation. The invention can realize the influence of different cutting speeds, blade sliding angles, blade inclination angles and blade types on the mechanical cutting characteristics of the sisal hemp blades, researches the influence rules of various cutting factors on the cutting force and the cutting energy consumption, obtains the value of the optimal cutting factor for simultaneously reducing the cutting force and the cutting energy consumption through reasonable test design, and provides important basis for designing sisal hemp blade harvesting machinery.
Claims (6)
1. A rotary sisal hemp blade cutting test bed is characterized in that: comprises a horizontal rotation motion system (100), a vertical motion system (200), a cutting and data acquisition system (300), a sisal hemp blade fixing device (400) and a frame (24);
the horizontal rotary motion system (100) comprises a circular guide rail (19) rotatably arranged on a circular guide rail disc (17), and a horizontal driving device for driving the circular guide rail (19) to rotate around the axis of the circular guide rail relative to the circular guide rail disc (17);
the vertical motion system (200) comprises a motor I (1), a screw rod (5) rotatably arranged on a rack (24), a nut seat (8) matched with the screw rod (5), a linear guide rail (11) connected to the rack (24), and a slide block (10) in sliding fit with the linear guide rail (11); the nut seat (8) and the sliding block (10) are connected with a circular guide rail disc (17) in the horizontal rotary motion system (100), the motor I (1) acts, the lead screw (5) rotates, and the nut seat (8) drives the horizontal rotary motion system (100) to move up and down along the linear guide rail (11);
the cutting and data acquisition system (300) comprises a cutting blade (22), a triaxial force sensor (16) and a computer; a triaxial force sensor (16) electrically connected with a computer is fixed on a circular guide rail (19) in a horizontal rotary motion system, and a cutting blade (22) positioned on the inner peripheral part of the circular guide rail (19) is detachably connected on the triaxial force sensor (16);
the sisal hemp blade fixing device (400) comprises a supporting column (15) which is connected to a machine frame (24) and penetrates through a circular guide rail (19), a blade clamping frame (186) which is connected to the supporting column (15), an upper clamping block (185) which is opposite to a lower clamping block (184) up and down and can move relative to the lower clamping block (184), and a lower clamping block (184) which is fixed on the blade clamping frame (186), wherein arc-shaped grooves are formed in opposite surfaces of the upper clamping block (185) and the lower clamping block (184).
2. The rotary sisal blade cutting test bench of claim 1, wherein: the horizontal driving device comprises a second motor (6), a pinion (173) and a bull gear (172), an output shaft of the second motor is connected with the pinion (173), the pinion (173) is meshed with the bull gear (172), and meshing teeth meshed with the bull gear (172) are arranged on the periphery of the circular guide rail (19).
3. The rotary sisal blade cutting test bench of claim 1, wherein: an inner guide groove (191) and an outer guide groove (192) are formed on the inner peripheral side and the outer peripheral side of the circular guide rail (19), a plurality of limiting bearings (171) arranged in the circumferential direction of the circular guide rail (19) are respectively in rolling fit with the inner guide groove (191) and the outer guide groove (19), and the limiting bearings (171) are rotatably arranged on a roller shaft (175) fixed on the circular guide rail disc (17).
4. The rotary sisal blade cutting test bench of claim 1, wherein: the spring (12) is sleeved at the lower part of the linear guide rail (11).
5. The rotary sisal blade cutting test bench of claim 1, wherein: the sisal hemp blade fixing device (400) further comprises a first optical axis support (181) connected to the supporting column (15), an optical axis (182) fixed on the first optical axis support (181), a second optical axis support (183) capable of vertically swinging relative to the optical axis (182), and a blade clamping frame (186) fixed on the second optical axis support (183).
6. The rotary sisal blade cutting test bench of claim 1, wherein: the rack (24) is formed by connecting sectional materials and corner connectors by bolts, the upper end and the lower end of the support column (15) are detachably connected to a cross rod (241) in the rack (24) by bolts, and the connecting position of the support column (15) on the cross rod can be adjusted; the cross bar (241) is detachably connected to a longitudinal bar (242) in the frame (24) through a bolt, and the connecting position of the cross bar (241) on the longitudinal bar (242) can be adjusted; the first optical axis bracket (181) is detachably connected to the supporting column (15) through a mounting bolt (188); the connection position of the first optical axis bracket (181) on the support column (15) can be adjusted; the cross rod (241), the longitudinal rod (242) and the support column (15) are all section bars.
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| CN202110530960.9A CN113252492B (en) | 2021-05-15 | 2021-05-15 | Rotary sisal hemp blade cutting test bed |
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| CN202110530960.9A CN113252492B (en) | 2021-05-15 | 2021-05-15 | Rotary sisal hemp blade cutting test bed |
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| CN113252492B CN113252492B (en) | 2022-04-22 |
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