CN114486719B - Pressure test method for cylindrical simulated limb and elastic sock with adjustable circumference - Google Patents
Pressure test method for cylindrical simulated limb and elastic sock with adjustable circumference Download PDFInfo
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- CN114486719B CN114486719B CN202210329821.4A CN202210329821A CN114486719B CN 114486719 B CN114486719 B CN 114486719B CN 202210329821 A CN202210329821 A CN 202210329821A CN 114486719 B CN114486719 B CN 114486719B
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- 238000010998 test method Methods 0.000 title abstract description 5
- 230000005540 biological transmission Effects 0.000 claims abstract description 81
- 238000012360 testing method Methods 0.000 claims abstract description 44
- 230000007246 mechanism Effects 0.000 claims description 78
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 29
- 239000000741 silica gel Substances 0.000 claims description 29
- 229910002027 silica gel Inorganic materials 0.000 claims description 29
- 230000033001 locomotion Effects 0.000 claims description 13
- 238000005259 measurement Methods 0.000 claims description 5
- 238000004088 simulation Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 2
- 210000003414 extremity Anatomy 0.000 description 20
- 210000002414 leg Anatomy 0.000 description 5
- 229920001296 polysiloxane Polymers 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 210000003484 anatomy Anatomy 0.000 description 1
- 210000003423 ankle Anatomy 0.000 description 1
- 244000309466 calf Species 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 230000007659 motor function Effects 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 210000000689 upper leg Anatomy 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0028—Force sensors associated with force applying means
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- Orthopedics, Nursing, And Contraception (AREA)
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Abstract
The invention discloses a pressure test method for a cylindrical simulated limb and elastic socks with adjustable circumference. Comprises a driving device, a variable cylindrical simulated limb and a pressure testing device; the driving device is arranged below the variable cylindrical simulated limb, and the pressure testing device is fixedly arranged on the variable cylindrical simulated limb; the driving device is movably connected with the variable cylindrical simulated limb, and drives the blades to expand and move through the transmission shaft, so that the elastic socks to be treated sleeved on the variable cylindrical simulated limb are stretched, and the elastic socks to be treated deform along with the elastic socks to be treated. According to the invention, different pressure values are obtained by controlling the moving distance of the blade, so that the determination of the pressure values of different parts of the stretch socks to be treated is realized, the operation is simple and feasible, and the pressure test is more scientific and reasonable.
Description
Technical Field
The invention relates to a testing method in the technical field of clothing pressure testing, in particular to a pressure testing method for a cylindrical simulated limb with adjustable circumference and elastic socks.
Background
With the development of the age, the requirement of people on clothing wearability is gradually increased, so that the clothing pressure is widely focused. When the elastic socks exert proper pressure on human body, the elastic socks have positive effects on medical control, body shaping, improvement of the motor function of human body and the like. Excessive pressure affects metabolism and organ function of human body, and is easy to produce fatigue. Meanwhile, due to the complexity of the human body structure and the appearance, the fit and the sizing of the stretch socks greatly affect the wearing comfort.
Because the pressure values needed to be provided by each part of the human body and each product are different, a more scientific, reasonable and convenient pressure detection system is designed, and the pressure value applied by the elastic sock to each part of the wearer is determined, so that the pressure value applied by each test product accords with the comfort range of the human body, and the method has important significance for the study of the clothing pressure. The pressure value of the stretch socks is detected rapidly and accurately, which is beneficial to the development and evaluation of products, but the existing pressure measuring instrument is fixed in a manual stretching mode and mainly adopts single transverse stretching; the three-dimensional model in the existing pressure measuring instrument cannot accurately measure according to the thickness of the girth of the tested part by accurately changing the thickness, so that the measuring instrument cannot effectively simulate the leg size of a real person according to the type of socks, the leg size and the like, and further cannot measure multiple groups of pressure value data under different girth and curvatures.
Disclosure of Invention
Aiming at the problems, the invention provides a pressure test method for cylindrical simulated limbs and elastic socks with adjustable circumference, which obtains different pressure values by controlling the moving distance of the blades, thereby realizing the determination of the pressure values of different parts of the elastic socks to be treated, and the operation is simple and feasible, so that the pressure test is more scientific and reasonable.
The technical scheme adopted by the invention is as follows:
1. pressure test equipment of cylindricality simulation limbs and stretch socks of circumference adjustable
Comprises a driving device, a variable cylindrical simulated limb and a pressure testing device; the driving device is arranged below the variable cylindrical simulated limb, and the pressure testing device is fixedly arranged on the variable cylindrical simulated limb; the driving device is movably connected with the variable cylindrical simulated limb, and the elastic sock to be treated is sleeved on the variable cylindrical simulated limb.
The driving device comprises a servo motor, a first transmission shaft, a second transmission shaft, a third transmission shaft and a fixed table frame; three servo motors are arranged in the fixed table frame, the machine bodies of the three servo motors are fixed on the inner bottom surface of the fixed table frame, the output shafts of the three servo motors are a first transmission shaft, a second transmission shaft and a third transmission shaft respectively, and the first transmission shaft, the second transmission shaft and the third transmission shaft sequentially penetrate through three round holes formed in the top surface of the fixed table frame along the horizontal direction respectively and are upwards connected to the variable cylindrical simulation limb.
The variable cylindrical simulated limb comprises a first rotary amplifying mechanism, a second rotary amplifying mechanism, a connecting rod and a gear rack moving mechanism; the gear rack movement mechanism, the first rotary amplifying mechanism and the second rotary amplifying mechanism are sleeved on the connecting rod from top to bottom in sequence;
the top end of the connecting rod is fixed with a groove body, a round hole is formed in the middle of the groove body, the connecting rod is of a cylindrical hollow structure, the second transmission shaft is coaxially sleeved with the connecting rod through the hollow structure of the connecting rod, and the top end of the second transmission shaft penetrates through the round hole formed in the middle of the groove body to extend upwards and then is connected with the gear rack moving mechanism; the first transmission shaft is upwards connected to the second rotary amplifying mechanism and the first rotary amplifying mechanism in sequence, and the third transmission shaft is upwards connected to the second rotary amplifying mechanism; the tail end of the connecting rod is fixed on the top surface of the fixed table frame.
The gear rack movement mechanism comprises a second blade, a second silica gel gasket, a rack and an upper layer gear; the second transmission shaft penetrates out from the top end of the connecting rod and then penetrates through the groove body, and is coaxially and fixedly connected with the upper layer gear; the upper layer gear is arranged in the groove body, both ends of the groove body are provided with a strip-shaped groove, and the strip-shaped grooves at both ends of the groove body are arranged right opposite; the two racks are respectively nested in the two strip-shaped grooves of the groove body, are mutually parallel and oppositely distributed on two sides of the gear and are simultaneously connected with the upper layer gear in a meshed manner, the tail ends of the extending ends of the two racks are respectively fixed with a second blade, and the two second blades are symmetrically distributed on two sides of the groove body by taking the upper layer gear as a center; the outer surface of the second blade is covered with a second silica gel gasket which has the same shape as the second blade, and the elastic sock to be treated is sleeved on the outer surface of the second blade and is tightly attached to the second silica gel gasket.
The second rotary amplifying mechanism has the same internal structure as the first rotary amplifying mechanism; the first rotary amplifying mechanism comprises a first blade, a supporting rod, a first silica gel gasket, a cylindrical protrusion, a fixed support column, a large gear and a small gear;
the connecting rod is fixed on the fixed support, the large gear is movably sleeved on the connecting rod and coaxially arranged, a plurality of curve grooves are formed in the large gear, the curve grooves are spirally and uniformly distributed around the large gear in a plane in a dispersing manner, the spiral directions of the curve grooves are the same, a plurality of radial strip grooves are formed in the fixed support, the radial strip grooves are circumferentially and uniformly distributed around the fixed support, a plurality of support rods are slidably mounted in the radial strip grooves formed in the fixed support, one end of each support rod is fixedly provided with a cylindrical protrusion parallel to the direction of the connecting rod, each cylindrical protrusion is slidably connected with the large gear through the curve groove formed in the large gear, the other end of each support rod is connected with a first blade, the outer surface of each first blade is covered with a first silica gel gasket with the same shape as the first blade, and the elastic sock to be treated is sleeved on the outer surface of the first blade and tightly attached to the first silica gel gasket; and a pinion is further arranged above the fixed support, the pinion is fixedly connected to the first transmission shaft, and the pinion is meshed with the large gear.
The plurality of curve grooves formed on the large gear are hollow grooves.
The first blades and the second blades are of the same semi-annular structure, and the plurality of first blades and the plurality of second blades are circumferentially arrayed around the second transmission shaft to form a cylindrical barrel structure.
Two through holes are formed in the edge of the fixed support column of the second rotary amplifying mechanism at intervals, and one through hole is formed in the edge of the fixed support column of the first rotary amplifying mechanism; the first transmission shaft sequentially passes through the through holes of the second rotary amplifying mechanism and the first rotary amplifying mechanism fixing support column and is upwards fixedly connected to the pinion of the first rotary amplifying mechanism, and the third transmission shaft is upwards fixedly connected to the pinion of the second rotary amplifying mechanism through the other through hole of the second rotary amplifying mechanism fixing support column; the first transmission shaft and the third transmission shaft are not contacted with the fixed support.
The pressure testing device comprises a pressure sensor, a signal acquisition module, a power supply and a PC end; the pressure sensors are respectively arranged on the first silica gel gasket and the second silica gel gasket and are respectively electrically connected with the PC end and the power supply through the signal acquisition module.
2. The test method applied to the pressure test equipment of the cylindrical simulated limb and the elastic sock with adjustable circumference comprises the following steps:
s1, electrically connecting a pressure sensor to a power supply and a PC end, and calibrating a plurality of pressure sensors in a pressure testing device under the condition of no external force; after calibration, a plurality of pressure sensors are respectively arranged on the first silica gel gasket and the second silica gel gasket;
s2, marking test points on the elastic socks to be processed, sleeving the elastic socks to be processed on the first blade and the second blade, adjusting the positions of the elastic socks to be processed, and positioning the test points marked on the elastic socks to be processed on the pressure sensor;
s3, starting the driving device to enable the first transmission shaft, the second transmission shaft and the third transmission shaft to start rotating;
s4, the first transmission shaft and the third transmission shaft respectively drive pinions in the first rotary amplifying mechanism and the second rotary amplifying mechanism to rotate, the pinions are in meshed connection with the large gears, the cylindrical protrusions are driven to move in curve grooves of the large gears, the support rods and the first blades are driven to move radially, and the elastic socks to be treated are supported and stretched towards the moving direction of the first blades;
s5, the first transmission shaft drives an upper layer gear in the gear-rack movement mechanism to move, the two racks move in opposite directions in the horizontal direction, and the second blade fixed on the racks is driven to move radially, so that the elastic socks to be treated are supported and stretched in the moving direction of the second blade;
and S6, the pressure sensor outputs a measurement result to the PC end through the signal acquisition module to read the pressure value.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, the blades can be replaced or the number of the blades and the supporting rods can be increased or decreased according to different curvature radiuses of each part of the tested site, so that multiple groups of pressure value data under different circumferences and curvatures can be conveniently measured according to a complex appearance structure of a human body, and a better pressure test effect is achieved.
The stretching degree of the stretch socks can be changed according to the part to be tested, so that accurate measurement of multiple groups of pressure value data is realized.
The outside parcel material is the silica gel gasket, can simulate human skin truly, and the silica gel gasket can rebound rapidly after receiving the effect extrusion deformation, is superior to other rigidity models, simulation that can be better.
The device is not influenced by subjective factors, can repeat experiments for many times, can improve efficiency by applying the flexible mannequin to perform garment pressure test, can work for a long time without the influence of the subjective factors on test results, and improves work efficiency.
The clothing pressure test system avoids using a real model, is not influenced by subjective factors, can repeat experiments for many times, and reduces the measurement cost. The operation of the model is easy and convenient, so that the pressure test is more scientific and reasonable.
The testing device simulates limbs through the cylinder shape, and the design of the round legs has the advantages of being movable, changeable in size, easy to wear and the like. And can be adjusted according to the anatomical structure of the leg, the posture position of the leg, the design and physical properties of the stretch stocking.
Drawings
FIG. 1 is an isometric view of the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is an isometric view of a drive apparatus of the present invention;
FIG. 4 is an expanded top view of the rotary amplifying mechanism of the present invention;
FIG. 5 is an isometric view of the interior of the rack and pinion motion mechanism of the present invention;
FIG. 6 is a top view of the rack and pinion motion mechanism of the present invention;
FIG. 7 is a schematic diagram of the relationship and position of the pressure sensing system according to the present invention.
The figure shows: a servo motor 1; a first drive shaft 2; a second drive shaft 3; a third drive shaft 4; a fixed table frame 5; a first blade 6; a support bar 7; a first silicone pad 8; a cylindrical protrusion 9; a fixing stay 10; a large gear 11; a pinion gear 12; a second blade 13; a second silicone pad 14; a rack 15; an upper gear 16; a clamping groove 17; a connecting rod 18; a pressure sensor 19; a signal acquisition module 20; a power supply 21; PC end 22.
Detailed Description
The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings.
As shown in fig. 1, the device comprises a driving device, a variable cylindrical simulated limb and a pressure testing device; the driving device is arranged below the variable cylindrical simulated limb, and the pressure testing device is fixedly arranged on the variable cylindrical simulated limb; the driving device is movably connected with the variable cylindrical simulated limb, and the elastic sock to be treated is sleeved on the variable cylindrical simulated limb.
Specifically, as shown in fig. 2 and 3, the driving device comprises a servo motor 1, a first transmission shaft 2, a second transmission shaft 3, a third transmission shaft 4 and a fixed table frame 5; three servo motors 1 are arranged in the fixed table frame 5, the machine bodies of the three servo motors 1 are fixed on the inner bottom surface of the fixed table frame 5, the output shafts of the three servo motors 1 are a first transmission shaft 2, a second transmission shaft 3 and a third transmission shaft 4 respectively, and the first transmission shaft 2, the second transmission shaft 3 and the third transmission shaft 4 sequentially penetrate through three round holes formed in the top surface of the fixed table frame 5 along the horizontal direction respectively and are upwards connected to the variable cylindrical simulation limb.
The variable cylindrical simulated limb comprises a first rotary amplifying mechanism, a second rotary amplifying mechanism, a connecting rod 18 and a gear rack moving mechanism; the rack and pinion movement mechanism, the first rotation amplifying mechanism and the second rotation amplifying mechanism are sleeved on the connecting rod 18 from top to bottom in sequence.
The top end of the connecting rod 18 is fixedly provided with a groove body 17, a round hole is formed in the middle of the groove body 17, the connecting rod 18 is of a cylindrical hollow structure, the second transmission shaft 3 is coaxially sleeved with the connecting rod 18 through the hollow structure of the connecting rod 18, and the top end of the second transmission shaft 3 penetrates through the round hole formed in the middle of the groove body 17 to extend upwards and then is connected with the gear rack movement mechanism; the first transmission shaft 2 is connected to the second rotary amplifying mechanism and the first rotary amplifying mechanism in turn upwards, and the third transmission shaft 4 is connected to the second rotary amplifying mechanism upwards; the tail end of the connecting rod 18 is fixed at the middle round hole on the top surface of the fixed desk frame 5.
As shown in fig. 5 and 6, the rack and pinion movement mechanism includes a second blade 13, a second silica gel pad 14, a rack 15, and an upper layer gear 16; the second transmission shaft 3 penetrates out from the top end of the connecting rod 18 and then penetrates through the groove body 17 to be coaxially and fixedly connected with the upper gear 16; the upper layer gear 16 is arranged in the groove body 17, both ends of the groove body 17 are provided with a strip-shaped groove, and the strip-shaped grooves at both ends of the groove body 17 are arranged right opposite; the two racks 15 are respectively nested in two bar grooves of the groove body 17, the two racks 15 are mutually parallel and oppositely distributed on two sides of the gear 16 and are simultaneously connected with the upper layer gear 16 in a meshed manner, the tail ends of the extending ends of the two racks 15 are respectively fixed with a second blade 13, and the two second blades 13 are symmetrically distributed on two sides of the groove body 17 by taking the upper layer gear 16 as a center; the outer surface of the second blade 13 is covered with a second silica gel gasket 14 which has the same shape as the second blade 13, and the elastic sock to be treated is sleeved on the outer surface of the second blade 13 and is tightly attached to the second silica gel gasket 14; when the second transmission shaft 3 rotates, the upper layer gear 16 is driven to rotate, the two racks 15 are driven to horizontally move along the strip-shaped grooves in the groove body 17, the two second blades 13 are pushed to expand and move to the two sides of the groove body 17, and the elastic socks to be treated sleeved on the outer surfaces of the second blades 13 are spread. Specifically, the thickness of the second silica gel pad 14 is 0.3cm, the diameter range of the cylindrical barrel surrounded by the second blades 13 is 3-7cm, the ankle of a human body is simulated, the height of the second blades 13 is 5cm, and the thickness is 0.2cm.
As shown in fig. 4, the second rotary amplifying mechanism has the same internal structure as the first rotary amplifying mechanism, and the sizes of the two rotary amplifying mechanisms are determined according to the size of the measured part.
The first rotation amplifying mechanism comprises a first blade 6, a support rod 7, a first silica gel pad 8, a cylindrical protrusion 9, a fixed support column 10, a large gear 11 and a small gear 12.
The connecting rod 18 is fixed on the fixed support column 10, the large gear 11 is movably sleeved on the connecting rod 18 and is coaxially arranged, a plurality of curve grooves are formed in the large gear 11, the curve grooves are uniformly distributed in a plane spiral manner around the axis of the large gear 11, the spiral directions of the curve grooves are the same, a plurality of radial strip grooves are formed in the fixed support column 10, the radial strip grooves are circumferentially and uniformly distributed around the fixed support column 10, a plurality of support rods 7 are slidably mounted in the radial strip grooves formed in the fixed support column 10, one end of each support rod 7 is fixedly provided with a cylindrical protrusion 9 parallel to the direction of the connecting rod 18, each cylindrical protrusion 9 is slidably connected with the large gear 11 through the curve groove formed in the large gear 11, the other end of each support rod 7 is connected with a first blade 6, the outer surface of the first blade 6 is covered with a first silica gel gasket 8 which is identical to the shape of the first blade 6, the to-be-treated elastic sock sleeves are tightly fitted on the outer surface of the first blade 6, and the thickness of the first silica gel gasket 8 is 0.3cm; a pinion 12 is further arranged above the fixed support column 10, the pinion 12 is fixedly connected to the first transmission shaft 2, the pinion 12 is meshed with the large gear 11, the first transmission shaft 2 is started to drive the pinion 12 to rotate, the large gear 11 is driven to rotate, the cylindrical protrusion 9 in the curve groove of the large gear 11 moves along the curve groove, the support rod 7 drives the first blade 6 to move radially, and the elastic socks to be treated sleeved on the outer surface of the first blade 6 are further stretched. Wherein, a plurality of curve grooves formed on the large gear 11 are hollow grooves.
The first blades 6 and the second blades 13 are of the same semi-annular structure, the first blades 6 and the second blades 13 are circumferentially arrayed around the second transmission shaft 3 to form a cylindrical barrel structure, the cylindrical barrel structure is used for supporting elastic socks to be processed, and the number of the first blades 6 and the second blades 13 is determined according to the elastic socks to be processed. Wherein, first blade 6, second blade 13 and bracing piece 7 are stainless steel material. The radius range of a cylindrical barrel surrounded by the first blades 6 in the first rotary amplifying mechanism is 4.5-8.5cm, so that the calf of a human body is simulated; the radius range of a cylindrical barrel surrounded by the first blades 6 in the second rotary amplifying mechanism is 6-10cm, so that the human thigh is simulated. The first blades 6 are 5cm in height and 0.2cm in thickness, and the number, size and curvature of the models can be adjusted according to actual conditions and other requirements, so that excessive requirements are not required.
Two through holes are formed in the edge of the fixed support column 10 of the second rotary amplifying mechanism at intervals, and one through hole is formed in the edge of the fixed support column 10 of the first rotary amplifying mechanism; the first transmission shaft 2 sequentially passes through the through holes of the second rotation amplifying mechanism and the first rotation amplifying mechanism fixing support column 10 to be fixedly connected to the pinion 12 of the first rotation amplifying mechanism upwards, and the third transmission shaft 4 passes through the other through hole of the second rotation amplifying mechanism fixing support column 10 to be fixedly connected to the pinion 12 of the second rotation amplifying mechanism upwards; neither the first drive shaft 2 nor the third drive shaft 4 is in contact with the stationary support column 10.
As shown in fig. 7, the pressure testing device comprises a pressure sensor 19, a signal acquisition module 20, a power supply 21 and a PC end 22; the pressure sensors 19 are respectively installed on the first silica gel pad 8 and the second silica gel pad 14, and are respectively electrically connected with the PC end 22 and the power supply 21 through the signal acquisition module 20 for data transmission, so as to obtain a pressure value obtained after the blade acts on the garment to be tested to be worn and sleeved on the device to generate deformation, and the pressure value can be regarded as the pressure of the garment to the human body.
The testing method applied to the pressure testing equipment specifically comprises the following steps:
s1, electrically connecting a pressure sensor (19) to a power supply (21) and a PC (personal computer) end (22), and calibrating a plurality of pressure sensors 19 in a pressure testing device under the condition of no external force; after calibration, a plurality of pressure sensors 19 are mounted on the first and second silicone gaskets 8 and 14, respectively.
S2, marking test points on the elastic socks to be processed, sleeving the elastic socks to be processed on the first blade 6 and the second blade 13, adjusting the positions of the elastic socks to be processed, and positioning the test points marked on the elastic socks to be processed on the pressure sensor 19.
S3, starting the driving device to enable the first transmission shaft 2, the second transmission shaft 3 and the third transmission shaft 4 to start rotating.
S4, the first transmission shaft 2 and the third transmission shaft 4 respectively drive a pinion 12 in the first rotary amplifying mechanism and the second rotary amplifying mechanism to rotate, the pinion 12 is meshed with a large gear 11, the cylindrical protrusion 9 is driven to move in a curve groove of the large gear 11, the support rod 7 and the first blade 6 are driven to move radially, and the elastic socks to be treated are supported and stretched towards the moving direction of the first blade 6.
S5, the first transmission shaft 2 drives an upper layer gear 16 in the gear-rack movement mechanism to move, the two racks 15 move in the horizontal direction in a opposite direction, and the second blades 13 fixed on the racks 15 are driven to move radially, so that the elastic socks to be treated are supported and stretched in the moving direction of the second blades 13.
Specifically, when all the first blades 6 and the second blades 13 are moved outward by 1 cm, the actuation of the servomotor 1 is stopped.
And S6, stopping testing after the pressure data reach a stable state, and outputting a measurement result to the PC end 22 by the pressure sensor 19 through the signal acquisition module 21 for reading the pressure value.
The above steps are repeated in sequence, and the servo motor 1 is controlled to change the model circumference, so that the distances of outward movement of all the first blades 6 and the second blades 13 are 2cm, 3cm and 4cm respectively. And finally, the pressure of the elastic sock to be measured on the surface of the human body can be obtained according to the obtained pressure value.
Therefore, the first blade 6 and the second blade 13 are moved to the required positions by controlling the rotation of the transmission shaft of the servo motor 1 to change the deformation amount of the elastic socks to be treated, so that the pressure values under different deformation amounts are obtained, and further, the relation between the deformation amounts and the pressure values is studied. Meanwhile, a relevant prediction model is built based on the data, an effective pressure prediction model is built, the comfort degree of the pressure sock when the pressure sock acts on a human body can be known based on the pressure value, and the pressure sock model can be adjusted according to the pressure value.
Claims (5)
1. Utilize elasticity socks's of cylindricality simulation limbs pressure test equipment of girth adjustable, its characterized in that:
comprises a driving device, a variable cylindrical simulated limb and a pressure testing device; the driving device is arranged below the variable cylindrical simulated limb, and the pressure testing device is fixedly arranged on the variable cylindrical simulated limb; the driving device is movably connected with the variable cylindrical simulated limb, and the elastic sock to be treated is sleeved on the variable cylindrical simulated limb;
the driving device comprises a servo motor (1), a first transmission shaft (2), a second transmission shaft (3), a third transmission shaft (4) and a fixed table frame (5); three servo motors (1) are arranged in the fixed table frame (5), the machine bodies of the three servo motors (1) are fixed on the inner bottom surface of the fixed table frame (5), the output shafts of the three servo motors (1) are a first transmission shaft (2), a second transmission shaft (3) and a third transmission shaft (4) respectively, and the first transmission shaft (2), the second transmission shaft (3) and the third transmission shaft (4) sequentially penetrate through three round holes formed in the top surface of the fixed table frame (5) along the horizontal direction and are upwards connected to the variable cylindrical simulated limb;
the variable cylindrical simulated limb comprises a first rotary amplifying mechanism, a second rotary amplifying mechanism, a connecting rod (18) and a gear rack moving mechanism; the gear rack movement mechanism, the first rotary amplifying mechanism and the second rotary amplifying mechanism are sleeved on the connecting rod (18) from top to bottom in sequence;
the top end of the connecting rod (18) is fixedly provided with a groove body (17), a round hole is formed in the middle of the groove body (17), the connecting rod (18) is of a cylindrical hollow structure, the second transmission shaft (3) is coaxially sleeved with the connecting rod (18) through the hollow structure of the connecting rod (18), and the top end of the second transmission shaft (3) penetrates through the round hole formed in the middle of the groove body (17) to extend upwards and then is connected with the gear rack moving mechanism; the first transmission shaft (2) is upwards connected to the second rotary amplifying mechanism and the first rotary amplifying mechanism in sequence, and the third transmission shaft (4) is upwards connected to the second rotary amplifying mechanism; the tail end of the connecting rod (18) is fixed on the top surface of the fixed table frame (5);
the gear-rack movement mechanism comprises a second blade (13), a second silica gel gasket (14), a rack (15) and an upper layer gear (16); the second transmission shaft (3) penetrates out of the top end of the connecting rod (18) and then penetrates through the groove body (17) and is fixedly connected with the upper layer gear (16) in a coaxial way; the upper gear (16) is arranged in the groove body (17), two ends of the groove body (17) are provided with a strip-shaped groove, and the strip-shaped grooves at two ends of the groove body (17) are opposite to each other; the two racks (15) are respectively nested in two strip grooves of the groove body (17), the two racks (15) are mutually parallel and oppositely distributed on two sides of the upper-layer gear (16) and are simultaneously connected with the upper-layer gear (16) in a meshed mode, the tail ends of the extending ends of the two racks (15) are respectively fixed with a second blade (13), and the two second blades (13) are symmetrically distributed on two sides of the groove body (17) by taking the upper-layer gear (16) as a center; the outer surface of the second blade (13) is covered with a second silica gel gasket (14) with the same shape as the second blade (13), and the elastic sock to be treated is sleeved on the outer surface of the second blade (13) and is tightly attached to the second silica gel gasket (14);
the second rotary amplifying mechanism has the same internal structure as the first rotary amplifying mechanism; the first rotary amplifying mechanism comprises a first blade (6), a supporting rod (7), a first silica gel gasket (8), a cylindrical protrusion (9), a fixed support (10), a large gear (11) and a small gear (12);
the connecting rod (18) is fixed on the fixed support column (10), the big gear (11) is movably sleeved on the connecting rod (18) and is coaxially arranged, a plurality of curve grooves are formed in the big gear (11), the curve grooves are uniformly distributed in a plane spiral manner around by taking the axle center of the big gear (11) as the center, the spiral directions of the curve grooves are the same, a plurality of radial strip grooves are formed in the fixed support column (10), the radial strip grooves are circumferentially uniformly distributed around the fixed support column (10), a plurality of support rods (7) are slidably mounted in the radial strip grooves formed in the fixed support column (10), one end of each support rod (7) is fixedly provided with a cylindrical protrusion (9) parallel to the direction of the connecting rod (18), each cylindrical protrusion (9) is slidably connected with the big gear (11) through the curve groove formed in the big gear (11), the other end of each support rod (7) is connected with a first blade (6), the outer surface of the first blade (6) is covered with a first blade (8) with the same shape as the first blade (6), and the first blade (6) is tightly attached to the outer surface of a sock liner (8) to be tightly attached to the first pad (8); a pinion (12) is further arranged above the fixed support column (10), the pinion (12) is fixedly connected to the first transmission shaft (2), and the pinion (12) is in meshed connection with the large gear (11);
the pressure testing device comprises a pressure sensor (19), a signal acquisition module (20), a power supply (21) and a PC end (22); the pressure sensors (19) are respectively arranged on the first silica gel gasket (8) and the second silica gel gasket (14), and are respectively electrically connected with the PC end (22) and the power supply (21) through the signal acquisition module (20).
2. A pressure testing apparatus for stretch socks utilizing a circumference adjustable cylindrical simulated limb according to claim 1, wherein: the plurality of curve grooves formed in the large gear (11) are hollow grooves.
3. A pressure testing apparatus for stretch socks utilizing a circumference adjustable cylindrical simulated limb according to claim 1, wherein: the first blades (6) and the second blades (13) are of the same semi-annular structure, and a plurality of the first blades (6) and the second blades (13) are circumferentially arrayed around the second transmission shaft (3) as the center to form a cylindrical barrel structure.
4. A pressure testing apparatus for stretch socks utilizing a circumference adjustable cylindrical simulated limb according to claim 1, wherein: two through holes are formed in the edge of a fixed support (10) of the second rotary amplifying mechanism at intervals, and one through hole is formed in the edge of the fixed support (10) of the first rotary amplifying mechanism; the first transmission shaft (2) sequentially penetrates through the through holes of the second rotary amplifying mechanism and the first rotary amplifying mechanism fixing support (10) to be fixedly connected to the pinion (12) of the first rotary amplifying mechanism upwards, and the third transmission shaft (4) is fixedly connected to the pinion (12) of the second rotary amplifying mechanism upwards through the other through hole of the second rotary amplifying mechanism fixing support (10); the first transmission shaft (2) and the third transmission shaft (4) are not contacted with the fixed support (10).
5. A method for testing a pressure testing device for stretch socks with adjustable circumference cylindrical simulated limbs according to any one of claims 1 to 4, characterized in that: the testing method specifically comprises the following steps:
s1, electrically connecting a pressure sensor (19) to a power supply (21) and a PC (personal computer) end (22), and calibrating a plurality of pressure sensors (19) in a pressure testing device under the condition of no external force; after calibration, a plurality of pressure sensors (19) are respectively arranged on the first silica gel gasket (8) and the second silica gel gasket (14);
s2, marking test points on the elastic socks to be treated, sleeving the elastic socks to be treated on the first blade (6) and the second blade (13), adjusting the positions of the elastic socks to be treated, and positioning the test points marked on the elastic socks to be treated on the pressure sensor (19);
s3, starting the driving device to enable the first transmission shaft (2), the second transmission shaft (3) and the third transmission shaft (4) to start rotating;
s4, the first transmission shaft (2) and the third transmission shaft (4) respectively drive pinions (12) in the first rotary amplifying mechanism and the second rotary amplifying mechanism to rotate, the pinions (12) are connected with a large gear (11) in a meshed mode, the cylindrical protrusions (9) are driven to move in curve grooves of the large gear (11), the supporting rods (7) and the first blades (6) are driven to move radially, and therefore elastic socks to be treated are supported and stretched towards the moving direction of the first blades (6);
s5, the first transmission shaft (2) drives an upper layer gear (16) in the gear-rack movement mechanism to move, the two racks (15) move in opposite directions in the horizontal direction, and the second blades (13) fixed on the racks (15) are driven to move radially, so that the elastic socks to be treated are supported and stretched in the moving direction of the second blades (13);
s6, the pressure sensor (19) outputs a measurement result to the PC end (22) through the signal acquisition module (20) for reading the pressure value.
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