CN114062120B - Clamp and detection system for measuring bending strength and equivalent bending rigidity of bone fracture plate - Google Patents
Clamp and detection system for measuring bending strength and equivalent bending rigidity of bone fracture plate Download PDFInfo
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- CN114062120B CN114062120B CN202111344036.8A CN202111344036A CN114062120B CN 114062120 B CN114062120 B CN 114062120B CN 202111344036 A CN202111344036 A CN 202111344036A CN 114062120 B CN114062120 B CN 114062120B
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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
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
- G01M5/0041—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress
- G01M5/005—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress by means of external apparatus, e.g. test benches or portable test systems
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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
- G01N3/064—Special adaptations of indicating or recording means with hydraulic 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
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/20—Investigating strength properties of solid materials by application of mechanical stress by applying steady bending forces
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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
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
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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
- G01N2203/0014—Type of force applied
- G01N2203/0023—Bending
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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
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic 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
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0075—Strain-stress relations or elastic constants
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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
- G01N2203/0405—Features allowing alignment between specimen and chucks
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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
- G01N2203/0411—Chucks, fixtures, jaws, holders or anvils using pneumatic or hydraulic pressure
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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
- G01N2203/0435—Chucks, fixtures, jaws, holders or anvils modifying the type of the force applied, e.g. the chuck transforms a compressive machine for applying a bending test
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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
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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
- G01N2203/0682—Spatial dimension, e.g. length, area, angle
Abstract
The invention provides a clamp and a detection system for measuring the bending strength and equivalent bending rigidity of a bone fracture plate, which comprises an upper base and a lower base, wherein the upper base is arranged above the lower base in a lifting manner, the bottom of the upper base is provided with a pair of upper extrusion shaft rollers in a translation manner along the length direction of the upper base, two sides of the upper surface of the lower base are provided with translation chutes, the side edges of a plurality of hydraulic slide bars are provided with oil circuit holes, the oil circuit holes are respectively and correspondingly connected with hydraulic pushing sleeves through flexible pipes, and drawing balls are respectively sleeved on unidirectional rotating shafts at two sides. Greatly reduces the analysis error and reduces the manual workload.
Description
Technical Field
The invention relates to the technical field of bone fracture plate strength measuring devices, in particular to a clamp and a detection system for measuring the bending strength and equivalent bending rigidity of a bone fracture plate.
Background
The clamp for measuring the bending strength and the equivalent bending rigidity of the bone fracture plate, disclosed as CN206573384U in the prior art, belongs to the technical field of bone fracture plate quality inspection, and comprises an upper clamp and a lower clamp which are matched with each other, wherein the upper clamp comprises an upper clamp body, two inner side roll shafts which protrude downwards are arranged on the lower surface of the upper clamp body, and the lower surfaces of the inner side roll shafts are arc-shaped surfaces; the lower clamp comprises a lower clamp body, two outer side roller shafts protruding upwards are arranged on the upper surface of the lower clamp body, and the upper surfaces of the outer side roller shafts are arc-shaped surfaces; three displacement sensors are arranged between the two outer side roller shafts in parallel, the displacement sensors positioned on two sides correspond to the two inner side roller shafts respectively, the device improves the accuracy of the test efficiency and the test result, and the test cost is reduced.
However, the clamp for measuring the bending strength and the equivalent bending rigidity of the bone fracture plate still has obvious defects in the using process: 1. the device is provided with a left displacement sensor, a middle displacement sensor and a right displacement sensor respectively and is used for detecting the deformation condition of the bone fracture plate in a touch mode, but the device cannot accurately record the bending condition of the bone fracture plate, and a corresponding simulation curve needs to be drawn for the deformation condition of the bone fracture plate through a computer according to experimental data in the later period, but the bone fracture plate is usually of a special-shaped structure, and the strength distribution of each part is inconsistent, so that a larger error exists in the drawing of the simulation curve in the later period; 2. at survey coaptation board intensity in-process, often need survey the resilience parameter of coaptation board, and relevant device among above-mentioned device and the prior art can't survey and the record the resilience state, and then leads to relevant survey data to need later stage manual measurement to supply, has improved detection error greatly, has increased artifical burden simultaneously.
Disclosure of Invention
The invention aims to provide a clamp and a detection system for measuring the bending strength and the equivalent bending rigidity of a bone fracture plate, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a clamp for measuring the bending strength and equivalent bending rigidity of a bone fracture plate comprises an upper base and a lower base, wherein the upper base is arranged above the lower base in a lifting manner, a pair of upper extrusion roller shafts is arranged at the bottom of the upper base in a translation manner along the length direction of the upper base, translation sliding grooves are formed in two sides of the upper surface of the lower base, translation plates symmetrical along the central line of the lower base are arranged in the translation sliding grooves on two sides, a lower extrusion roller shaft is movably arranged on one side, close to the translation plates on two sides, of the lower base through a roller shaft, extrusion rod grooves are also formed in the lower base, a plurality of translation sliding grooves are uniformly formed in the lower base at the bottom of the extrusion rod grooves at intervals, hydraulic sliding rods translating along the width direction of the lower base are arranged in the translation sliding grooves, an extrusion sleeve is detachably assembled at the upper part of each hydraulic sliding rod, and oil way holes are formed in the side edges of the hydraulic sliding rods, the oil way holes are correspondingly connected with the hydraulic pushing sleeve one by one through flexible pipes, an extrusion ejector rod is movably inserted in the extrusion sleeve, an extrusion piston rod and a telescopic piston rod are movably inserted in the hydraulic sliding rod and the hydraulic pushing sleeve respectively, the extrusion ejector rod is movably abutted against the extrusion piston rod, the extrusion ejector rod is driven by the lifting of the extrusion ejector rod to drive the extrusion piston rod and the telescopic piston rod to telescopically move at equal intervals, and reset springs are arranged in the hydraulic sliding rods at the bottoms of the extrusion piston rods;
the telescopic piston rod is far away from hydraulic pressure and promotes sleeve one end and all installs the fixed cover of pen container, all insert in the fixed cover of pen container and be equipped with the drawing line pen, the nib department of drawing line pen bottom is provided with the drawing line ball of a pair of parallel, the drawing line ball overlaps respectively and is established on the one-way rotation axis of both sides, parallel drawing line ball direction of rotation is opposite, the drawing line ball is paintd the ink on nib upper portion at flexible route line through rotatory mode.
Preferably, the lower base is located hydraulic pressure and promotes sleeve one side still fixed mounting have a line drawing board, the experiment recording paper has been laid to the range upon range of formula on the line drawing board, and a plurality of the equal activity of drawing line ball that the drawing line pen bottom set up supports and leans on the experiment recording paper.
Preferably, a plurality of hydraulic pressure promotes sleeve and keeps away from telescopic piston rod one end and all passes through pivot movable mounting in U type connector link, the equal fixed mounting of U type connector link is in base one side down.
Preferably, the lower base is located line drawing board one side and has still seted up along the scale mark of lower base central line bilateral symmetry, the upper base surface slidingtype of scale mark top is provided with a pair of instruction piece, instruct the translation board side of piece fixed mounting respectively in both sides.
Preferably, the translation plates on the two sides are provided with limiting blocks in a sliding mode, the limiting blocks on the two sides are provided with threaded holes, and threaded adjusting knobs are inserted into the threaded holes.
Preferably, the upper extrusion shaft rollers on the two sides are inserted into the same screw rod knob through threaded holes, and the screw rod knob drives the upper extrusion shaft rollers on the two sides to move in the opposite direction or in the opposite direction along the center line of the upper base.
Preferably, the bottom of the extrusion sleeve is provided with an external thread, and the extrusion sleeve is in threaded fit with an internal thread arranged in the hydraulic slide rod through the external thread.
Preferably, the translation board of both sides is kept away from the equal threaded mounting of instruction piece one side and is had fixed the knot, fixed knot leans on with the lower base activity.
A detecting system for bone plate bending strength and equivalent bending rigidity survey, include through the survey anchor clamps of line mode reservation bone plate deformation and resilience parameter of drawing, this survey anchor clamps adopt foretell be used for bone plate bending strength and equivalent bending rigidity survey anchor clamps.
Compared with the prior art, the invention has the beneficial effects that:
1. the bending strength of the bone plate can be measured, the bone plate shape deformation curve can be synchronously drawn in the measuring process, compared with a later-stage computer simulation curve, the curve drawn in real time by the device can more accurately show the deformation condition of each position of the bone plate in the strength measuring process, and meanwhile, the generated paper experimental data can be stored along with a sample, so that later-stage experimental analysis and rechecking are facilitated;
2. the invention can also synchronously draw the springback parameters of the bone fracture plate, successfully replaces the later manual measurement, greatly reduces the analysis error, and simultaneously reduces the manual workload, so that the device has various functions.
The bending strength of the bone plate can be measured, the bone plate deformation curve can be synchronously drawn in the measuring process, the resilience parameters of the bone plate can be drawn, the generated paper experimental data can be stored along with a sample, the later experimental analysis and rechecking are facilitated, the analysis error is greatly reduced, and the manual workload is reduced.
Drawings
FIG. 1 is a perspective view of the overall structure of the present invention;
FIG. 2 is a schematic top view of a lower base and a connecting structure thereof according to the present invention;
FIG. 3 is a schematic view of a hydraulic slide bar connection structure of the present invention;
FIG. 4 is a cross-sectional schematic view of a hydraulic slide bar connection arrangement of the present invention;
FIG. 5 is a schematic view of a connection structure of a pen according to the present invention;
FIG. 6 is a schematic diagram of auxiliary drawing of bending and springback curves of experimental recording paper of the present invention;
FIG. 7 is an enlarged view of the area A of the present invention;
FIG. 8 is an enlarged view of the area B of the present invention;
FIG. 9 is an enlarged view of the area C of the present invention;
FIG. 10 is an enlarged view of the area D of the present invention;
FIG. 11 is an enlarged view of area E of the present invention;
fig. 12 is an enlarged structural view of the F region of the present invention.
In the figure: 1 upper base, 2 lower base, 3 upper extrusion beam barrel, 4 translation chutes, 5 translation plates, 6 lower extrusion beam barrel, 7 extrusion rod grooves, 8 hydraulic slide rods, 9 extrusion sleeves, 10 oil way holes, 11 flexible pipes, 12 hydraulic pushing sleeves, 13 extrusion ejector rods, 14 extrusion piston rods, 15 telescopic piston rods, 16 reset springs, 17 pen container fixing sleeves, 18 line drawing pens, 19 pen points, 20 line drawing balls, 21 one-way rotating shafts, 22 line drawing boards, 23 experiment recording paper, 24U-shaped connecting buckles, 25 scale marks, 26 indicating blocks, 27 limiting blocks, 28 thread adjusting knobs, 29 screw rod knobs, 30 external threads, 31 internal threads, 32 fixing buckles and 33 chutes.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example (b):
referring to fig. 1-12, the present invention provides a technical solution:
the first embodiment is as follows:
a clamp for measuring the bending strength and equivalent bending rigidity of a bone fracture plate comprises an upper base 1 and a lower base 2, wherein the upper base 1 is arranged above the lower base 2 in a lifting manner, a pair of upper extrusion shaft rollers 3 are arranged at the bottom of the upper base 1 in a translation manner along the length direction of the upper extrusion shaft rollers, translation sliding grooves 4 are formed in two sides of the upper surface of the lower base 2, translation plates 5 symmetrical along the central line of the lower base 2 are arranged in the translation sliding grooves 4 on two sides in a translation manner, lower extrusion roller shafts 6 are arranged on one sides, close to the translation plates 5 on two sides, through roller shafts, movably, extrusion rod grooves 7 are also formed in the lower base 2, a plurality of sliding grooves 33 are uniformly formed in the lower base 2 at the bottom of the extrusion rod grooves 7 at intervals, hydraulic sliding rods 8 translating along the width direction of the lower base 2 are arranged in the plurality of sliding grooves 33, extrusion sleeves 9 are detachably assembled on the upper parts of the hydraulic sliding rods 8, oil way holes 10 are formed in the side edges of the plurality of the hydraulic sliding rods 8, the oil way holes 10 are correspondingly connected with the hydraulic pushing sleeve 12 through the flexible pipes 11 one by one, the squeezing sleeve 9 is movably inserted with a squeezing ejector rod 13, the hydraulic sliding rod 8 and the hydraulic pushing sleeve 12 are respectively movably inserted with a squeezing piston rod 14 and a telescopic piston rod 15, the squeezing ejector rod 13 is movably abutted against the squeezing piston rod 14, the lifting of the squeezing ejector rod 13 drives the squeezing piston rod 14 and the telescopic piston rod 15 to telescopically move at equal intervals, and the hydraulic sliding rod 8 at the bottom of the squeezing piston rod 14 is internally provided with a return spring 16;
the telescopic piston rod 15 is far away from the hydraulic pressure and promotes the one end of sleeve 12 and all installs the fixed cover of pen container 17, all inserts in the fixed cover of pen container 17 and is equipped with drawing line pen 18, and the nib 19 department of drawing line pen 18 bottom is provided with a pair of parallel drawing line ball 20, and drawing line ball 20 overlaps respectively and is established on the one-way rotation axis 21 of both sides, and parallel drawing line ball 20 direction of rotation is opposite, and drawing line ball 20 paints the ink on the upper portion of nib 19 along the flexible route through rotatory mode.
The upper base 1 and the lower base 2 are arranged in a matched mode, the upper base 1 is driven by a hydraulic device to move downwards, the upper extrusion shaft roller 3 is further driven to move downwards, the bone fracture plate to be measured is erected on the lower extrusion shaft rollers 6 on two sides of the lower base 2, the bone fracture plate is made to deform by downward extrusion of the upper extrusion shaft roller 3, so that the bending strength and the equivalent bending rigidity of the bone fracture plate are measured according to experimental data, in the measuring process, the translation plates 5 on two sides are moved, the device can clamp the bone fracture plates with different sizes and specifications, and meanwhile the upper extrusion shaft rollers 3 are correspondingly translated to extrude the bone fracture plate;
in this embodiment, through arranging the hydraulic slide bar 8 with a height lower than the upper surface of the lower base 2 in the extrusion bar groove 7, the hydraulic slide bar 8 can generate translation along the width direction of the lower base 2 in the extrusion bar groove 7, because bone nail holes are often arranged at each position of the bone fracture plate, the hydraulic slide bar 8 at each position can perform corresponding work in the process of pressing down and deformation of the bone fracture plate through translation sliding of the hydraulic slide bar 8, so as to perform real-time synchronous line drawing, the extrusion sleeve 9 is detachably arranged at the upper part of the hydraulic slide bar 8, and a certain number of extrusion sleeves 9 are correspondingly arranged according to the bone fracture plates with different sizes, referring to the attached figure 4 of the specification, when the bone fracture plate is pressed down and deformed, the bone fracture plate pushes the extrusion ejector rod 13 to press down, the extrusion ejector rod 13 drives the extrusion piston rod 14 to press down, the extrusion piston rod 14 presses down to make hydraulic oil in the hydraulic slide bar 8 enter the interior of the hydraulic push sleeve 12 through the flexible pipe 11, and further the telescopic piston rod 15 is extruded to extend outwards, because the far end of the telescopic piston rod 15 is provided with the line drawing pen 18, when the telescopic piston rod 15 extends, the line drawing pen 18 is driven to slide, and the deformation state of the bone fracture plate is indicated through the path left by the line drawing pen 18, referring to the description and the attached figure 6, since the pair of drawing balls 20 are provided at the bottom of the nib 19 and the drawing balls 20 are installed on the respective unidirectional rotation shafts 21 to rotate in different directions, when the telescopic piston rod 15 is extended, one drawing ball 20 draws, when the bone fracture plate rebounds to drive the telescopic piston rod 15 to retract, the line drawing ball 20 on the other side draws, by the ingenious arrangement, the deformation limit quantity and the rebound limit quantity can be accurately recorded respectively, and can obtain deformation and resilience curve fast through the mode of the supplementary line of drawing of later stage, and then be convenient for carry out the accurate determination of coaptation board bending strength and equivalent bending rigidity.
Example two:
in this embodiment, the lower base 2 is located one side of the hydraulic pushing sleeve 12 and is further fixedly provided with a line drawing board 22, an experiment recording paper 23 is laid on the line drawing board 22 in a stacked manner, line drawing balls 20 arranged at the bottoms of the line drawing pens 18 are movably abutted against the experiment recording paper 23, in this embodiment, a paper slot for stacking the experiment recording paper 23 is arranged on the line drawing board 22, an experiment is not performed, deformation data of the experiment can be generated quickly, and the deformation data are stored with a sample through a paper state.
Example three:
in this embodiment, a plurality of hydraulic pressure promote sleeve 12 and keep away from telescopic piston rod 15 one end and all through pivot movable mounting in U type connector link 24, the equal fixed mounting of U type connector link 24 is in base 2 one side down, hydraulic pressure promotes sleeve 12 and can rotate around U type connector link 24, thereby conveniently draw and take out experiment recording paper 23 after accomplishing, still be provided with torsion spring in the pivot of hydraulic pressure promotion sleeve 12 through in U type connector link 24, thereby guarantee that line drawing pen 18 closely supports and leans on experiment recording paper 23 under no exogenic action, and then guarantee that the line type of drawing is clear directly perceived.
Example four:
in this embodiment, the lower base 2 is provided with a graduation line 25 located on one side of the line drawing board 22 and symmetrical along two sides of the center line of the lower base, a pair of indication blocks 26 is slidably arranged on the surface of the upper base 1 above the graduation line 25, the indication blocks 26 are respectively and fixedly mounted on the sides of the translation plates 5 on two sides, and the quick adjustment of the translation plates 5 can be assisted by drawing the graduation line 25.
Example five:
in this embodiment, all slide on the translation board 5 of both sides and be provided with stopper 27, all set up threaded hole on the stopper 27 of both sides, threaded hole all inserts and is equipped with screw thread adjust knob 28, through leaning on of stopper 27 to the coaptation board of both sides to firmly restrict it on lower base 2, accomplish stopper 27's translation through rotatory screw thread adjust knob 28.
Example six:
in this embodiment, the upper squeeze rollers 3 on both sides are inserted into the same screw knob 29 through the threaded holes, the screw knob 29 drives the upper squeeze rollers 3 on both sides to move toward or away from each other along the center line of the upper base 1, and the screw knob 29 has threads symmetrical to each other along the center line of the upper base 1, so that the movement of the upper squeeze rollers 3 on both sides toward and away from each other can be synchronously performed when the screw knob 29 is rotated.
Example seven:
in this embodiment, the bottom of the pressing sleeve 9 is provided with an external thread 30, the pressing sleeve 9 is in threaded fit with an internal thread 31 provided in the hydraulic sliding rod 8 through the external thread 30, and the pressing sleeve 9 can be quickly installed or removed through the fit between the external thread 30 and the internal thread 31.
Example eight:
in this embodiment, the translation board 5 of both sides is kept away from and is all installed fixed knot 32 by the screw thread on instruction block 26 one side, and fixed knot 32 supports with lower base 2 activity and leans on, and after translation board 5 adjusts and accomplishes, makes its base 2 one side down be close to through rotatory fixed knot 32, and when fixed knot 32 supported closely with lower base 2 and leaned on, the removal of translation board 5 this moment is restricted, and then accomplishes the regulation and the fixing of translation board 5 fast.
A detecting system for bone plate bending strength and equivalent bending rigidity survey, include through the survey anchor clamps of line mode reservation bone plate deformation and resilience parameter of drawing, this survey anchor clamps adopt foretell be used for bone plate bending strength and equivalent bending rigidity survey anchor clamps.
The working principle is as follows: the translation plates 5 on two sides of the lower base 2 are adjusted to enable two ends of bone fracture plates with different sizes to smoothly abut against the limiting blocks 27 arranged on two sides, at the moment, the upper base 1 and the upper extrusion shaft roller 3 are operated to press downwards through a hydraulic device, and then the bone fracture plates are driven to deform downwards through pressing downwards, when the bone fracture plates deform, the extrusion ejector rod 13 arranged on the lower portion of the bone fracture plates is pushed to move, the extrusion ejector rod 13 drives the extrusion piston rod 14 to press downwards, the extrusion piston rod 14 presses downwards, so that hydraulic oil in the hydraulic slide rod 8 enters the hydraulic push sleeve 12 through the flexible pipe 11, and then the extrusion telescopic piston rod 15 extends outwards, as the far end of the telescopic piston rod 15 is provided with the line drawing pen 18, when the telescopic piston rod 15 extends, the line drawing pen 18 is driven to slide, and the deformation state of the bone fracture plates is indicated through the path left by the line drawing pen 18, and the same is that, after the upper base 1 moves upwards, if the bone fracture plate rebounds, the extrusion piston rod 14 is reset under the action of the reset spring 16, the extrusion piston rod 14 drives the expansion piston rod 15 to retract, the expansion piston rod 15 retracts to drive the line drawing pen 18 to move, in the extending or retracting process of the line drawing pen 18, the line drawing ball 20 on one side only carries out line drawing operation, therefore, a plurality of track lines are left on the experiment recording paper 23, and after the determination is completed, the sample and the corresponding experiment recording paper 23 are taken down to be measured, calculated and stored.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. A anchor clamps for coaptation board bending strength and equivalent bending stiffness survey, including top base (1) and lower base (2), top base (1) over-and-under type sets up in lower base (2) top, top base (1) bottom is provided with a pair of extrusion beam barrel (3) on along its length direction translation formula, translation spout (4), both sides have been seted up to lower base (2) upper surface both sides equal translation formula is provided with along translation board (5) of lower base (2) central line symmetry in translation spout (4), both sides translation board (5) close one side all is provided with down extrusion roller (6), its characterized in that through the roller activity: an extrusion rod groove (7) is further formed in the lower base (2), a plurality of sliding grooves (33) are uniformly formed in the lower base (2) at the bottom of the extrusion rod groove (7) at intervals, hydraulic sliding rods (8) which horizontally move along the width direction of the lower base (2) are arranged in the sliding grooves (33), an extrusion sleeve (9) is detachably assembled at the upper part of each hydraulic sliding rod (8), oil way holes (10) are formed in the side edges of the hydraulic sliding rods (8), the oil way holes (10) are correspondingly connected with hydraulic pushing sleeves (12) through flexible pipes (11), an extrusion ejector rod (13) is movably inserted in each extrusion sleeve (9), an extrusion piston rod (14) and a telescopic piston rod (15) are movably inserted in each hydraulic sliding rod (8) and each hydraulic pushing sleeve (12), and the extrusion ejector rod (13) is movably abutted to the extrusion piston rod (14), the lifting of the extrusion ejector rod (13) drives the extrusion piston rod (14) and the telescopic piston rod (15) to do telescopic movement at equal intervals, and return springs (16) are arranged in hydraulic slide rods (8) at the bottoms of the extrusion piston rods (14);
the utility model discloses a line drawing pen, including telescopic piston rod (15), pen container fixed cover (17) are all installed to hydraulic pressure promotion sleeve (12) one end is kept away from in telescopic piston rod (15), all insert in the pen container fixed cover (17) and be equipped with line drawing pen (18), nib (19) department of line drawing pen (18) bottom is provided with line drawing ball (20) of a pair of parallel, line drawing ball (20) are established respectively and are established on the one-way rotation axis (21) of both sides, parallel line drawing ball (20) direction of rotation is opposite, line drawing ball (20) are paintd the ink on nib (19) upper portion on the line of flexible route through the rotation mode.
2. A clamp for determination of bending strength and equivalent bending stiffness of a bone plate according to claim 1, wherein: the lower base (2) is located hydraulic pressure and promotes sleeve (12) one side and still fixed mounting has line drawing board (22), experimental recording paper (23) have been laid to the range upon range of formula on line drawing board (22), and a plurality of line drawing ball (20) that line drawing pen (18) bottom set up all move about to lean on experimental recording paper (23).
3. A clamp for determination of bending strength and equivalent bending stiffness of a bone plate according to claim 2, wherein: a plurality of hydraulic pressure promotes sleeve (12) and keeps away from telescopic piston rod (15) one end all through pivot movable mounting in U type connector link (24), equal fixed mounting in base (2) one side down of U type connector link (24).
4. A jig for determination of bending strength and equivalent bending stiffness of a bone plate according to claim 3, wherein: lower base (2) are located line drawing board (22) one side and still set up scale mark (25) along lower base central line bilateral symmetry, upper base (1) surface slidingtype of scale mark (25) top is provided with a pair of instruction piece (26), instruction piece (26) fixed mounting respectively is at translation board (5) side of both sides.
5. A clamp for determination of bending strength and equivalent bending stiffness of a bone plate according to claim 4, wherein: the translation plate (5) on both sides all slides and is provided with stopper (27), both sides all set up threaded hole on stopper (27), threaded hole all inserts and is equipped with screw thread adjust knob (28).
6. A clamp for determination of bending strength and equivalent bending stiffness of a bone plate according to claim 5, wherein: the upper extrusion shaft rollers (3) on the two sides are inserted into the same screw rod knob (29) through threaded holes, and the screw rod knob (29) drives the upper extrusion shaft rollers (3) on the two sides to move in the opposite direction or in the opposite direction along the center line of the upper base (1).
7. A clamp for determination of bending strength and equivalent bending stiffness of a bone plate according to claim 4, wherein: the bottom of the extrusion sleeve (9) is provided with an external thread (30), and the extrusion sleeve (9) is in threaded fit with an internal thread (31) arranged in the hydraulic sliding rod (8) through the external thread (30).
8. A clamp for determination of bending strength and equivalent bending stiffness of a bone plate according to claim 3, wherein: translation board (5) keep away from and instruct equal threaded mounting in block (26) one side and detain (32) both sides, fixed knot (32) support with lower base (2) activity and lean on.
9. A detecting system for coaptation board bending strength and equivalent bending stiffness survey, include through drawing the survey anchor clamps that the line mode kept coaptation board deformation and resilience parameter, its characterized in that: the measurement jig is the jig for measuring the bending strength and equivalent bending stiffness of the bone plate according to any one of claims 1 to 8.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111344036.8A CN114062120B (en) | 2021-11-14 | 2021-11-14 | Clamp and detection system for measuring bending strength and equivalent bending rigidity of bone fracture plate |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111344036.8A CN114062120B (en) | 2021-11-14 | 2021-11-14 | Clamp and detection system for measuring bending strength and equivalent bending rigidity of bone fracture plate |
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| CN114062120A CN114062120A (en) | 2022-02-18 |
| CN114062120B true CN114062120B (en) | 2022-09-02 |
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| CN116399716B (en) * | 2023-06-09 | 2023-08-22 | 江苏嘉斯康医疗科技有限公司 | Press for bone fracture plate test |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103759744B (en) * | 2014-01-21 | 2016-03-02 | 南京理工技术转移中心有限公司 | A kind of flexible displacement transmission mechanism |
| CN206362638U (en) * | 2017-01-09 | 2017-07-28 | 湖南有色金属职业技术学院 | A kind of punch test device of inspection plate property |
| CN206440231U (en) * | 2017-01-11 | 2017-08-25 | 内蒙古大学公路工程试验检测中心 | A kind of efficient plate material flexural deformation measurement apparatus simple in construction |
| CN106885728A (en) * | 2017-02-14 | 2017-06-23 | 山东省医疗器械产品质量检验中心 | The fixture and method determined for bone plate bending strength and equivalent bending stiffness |
| CN107166003B (en) * | 2017-05-16 | 2019-03-15 | 上海煊凝机电制造有限公司 | A kind of displacement transmitted hydraulic system |
| CN212621973U (en) * | 2020-04-26 | 2021-02-26 | 青岛创科检验检测有限公司 | Detection apparatus for building material |
| CN212110993U (en) * | 2020-05-14 | 2020-12-08 | 张梦龙 | Steel construction hardness test detection device |
| CN113513967A (en) * | 2021-03-11 | 2021-10-19 | 杭州琴久信息技术有限公司 | Square building plate flatness detection device capable of directly displaying curve |
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