CN209858115U - Clamp for bone torque test - Google Patents
Clamp for bone torque test Download PDFInfo
- Publication number
- CN209858115U CN209858115U CN201920970555.7U CN201920970555U CN209858115U CN 209858115 U CN209858115 U CN 209858115U CN 201920970555 U CN201920970555 U CN 201920970555U CN 209858115 U CN209858115 U CN 209858115U
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- Prior art keywords
- base
- chuck
- clamping jaws
- clamping jaw
- clamping
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- Expired - Fee Related
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- 238000012360 testing method Methods 0.000 title claims abstract description 46
- 210000000988 bone and bone Anatomy 0.000 title claims abstract description 40
- 230000000694 effects Effects 0.000 claims description 4
- 230000001788 irregular Effects 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model discloses a clamp for testing bone torque, which comprises a clamping jaw; the bottom of clamping jaw is articulated with the edge of base, is equipped with three logical groove of locating on the clamping jaw on the chuck, leads to the inner wall that the groove is close to the chuck edge and is the inclined plane of upwards inclining outwards. The advantages are that: the two clamps are horizontally fixed at two ends of the torsion testing machine through connecting seats respectively, and after the two clamps are fixed, the central lines of the two clamps are coaxial and the clamping jaws are arranged oppositely; when a chuck of the fixture moves to the bottom ends of the clamping jaws, the three clamping jaws can be outwards opened to abut against the inclined planes of the corresponding through grooves, the end parts of a bone test piece can be correspondingly placed in the middle of the three clamping jaws, then the chuck moves towards the top ends of the clamping jaws, the three clamping jaws are closed and clamp the bone test piece under the action of the inclined planes, and then the screw rod is rotated to tightly push the chuck; therefore, the fixture can be used for stably clamping irregular bones, the bones are not easy to slide when torsion testing is carried out, and the testing accuracy is improved.
Description
The technical field is as follows:
the utility model relates to the technical field of medical equipment, in particular to anchor clamps for bone torque test.
Background art:
the torque test of bones is one of the parameters tested by biomechanical experiments; at present, the torque of a bone test piece is mainly tested through a torsion testing machine, so that the torque mechanical parameters of the bone can be obtained, and a basis is provided for relevant theoretical establishment or practical application; the existing fixture used for torque testing in biomechanical experiments usually aims at regular samples, and for irregular bones, the existing fixture cannot clamp the irregular bones or has insufficient clamping force, so that the bones slide relative to the fixture easily during torsion testing, the test result is seriously influenced, and the accuracy of the test parameters is reduced.
The utility model has the following contents:
the utility model aims at providing a to bone test piece centre gripping stabilize in order to guarantee the experiment to test the anchor clamps that are used for bone torque test of parameter accuracy.
The utility model discloses by following technical scheme implement: the clamp for testing the bone torque comprises a connecting seat, a base and a clamping jaw; the top surface of the connecting seat is fixedly provided with the horizontally arranged base through a connecting rod, at least three clamping jaws which are uniformly distributed are vertically arranged along the edge above the base, the bottom ends of the clamping jaws are hinged with the edge of the base, the clamping jaws are vertically and rotatably arranged, at least three screw rods which are uniformly distributed along the circumferential direction are vertically penetrated and screwed on the top surface of the base, and the bottom ends of the screw rods are movably arranged below the base; the base top level is equipped with the edge the chuck that the clamping jaw reciprocated, be equipped with three cover on the chuck and be located corresponding logical groove on the clamping jaw, the bottom surface of chuck with the top movable contact of screw rod, it is adjacent to lead to the groove the inner wall at chuck edge be by the chuck bottom surface extremely the inclined plane of chuck top surface tilt up outwards.
Further, the base comprises a fixed base and a movable base arranged on the top surface of the fixed base; the fixing base passes through the connecting rod with connecting seat fixed connection, the edge of base be equipped with the opening that the bottom of clamping jaw corresponds, fixing base's top surface is equipped with link up every the ring channel of opening, be equipped with in the ring channel and wear to locate every the curved articulated shaft of clamping jaw bottom, the activity base pass through the bolt with fixing base fixed connection, and will the articulated shaft clamp is located fixing base with between the activity base.
Furthermore, anti-skid stripes are vertically arranged on the inner wall of the top end of the clamping jaw.
The utility model has the advantages that: when a bone test piece is subjected to torque test, two fixtures are horizontally fixed at two ends of a torsion testing machine through connecting seats respectively, and after the fixtures are fixed, the central lines of the two fixtures are coaxial and clamping jaws are arranged oppositely; when a chuck of the clamp moves to the bottom ends of the clamping jaws, the three clamping jaws can be outwards opened to abut against inclined planes of the corresponding through grooves, the end parts of bones can be correspondingly placed in the middles of the three clamping jaws at the moment, then the chuck moves towards the top ends of the clamping jaws, the three clamping jaws are closed and clamp the bones at the same time under the action of the inclined planes, and then the screw rod is rotated to tightly push the chuck; therefore, the fixture can firmly clamp irregular bones, the bones are not easy to slide when torsion test is carried out, and the test accuracy is improved.
Description of the drawings:
fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a top view of fig. 1.
Fig. 3 is a sectional view a-a of fig. 1.
Fig. 4 is a schematic structural view of the fixing base.
Fig. 5 is a reference diagram of the usage status of the present invention.
The parts in the drawings are numbered as follows: the device comprises a connecting seat 1, a base 2, a clamping jaw 3, a connecting rod 4, a screw rod 5, a chuck 6, a through groove 7, an inclined plane 8, a fixed base 9, a movable base 10, a notch 11, an annular groove 12, a hinged shaft 13, an anti-skid stripe 14, a bone test piece 15 and a torsion testing machine 16.
The specific implementation mode is as follows:
as shown in fig. 1 to 5, the jig for bone torque test includes a connection seat 1, a base 2, and a jaw 3; a horizontally arranged base 2 is fixed on the top surface of the connecting seat 1 through a connecting rod 4, at least three clamping jaws 3 which are uniformly distributed are vertically arranged along the edge above the base 2, the bottom ends of the clamping jaws 3 are hinged with the edge of the base 2, the clamping jaws 3 are vertically and rotatably arranged, at least three screw rods 5 which are uniformly distributed along the circumferential direction are vertically penetrated and screwed on the top surface of the base 2, and the bottom ends of the screw rods 5 are movably arranged below the base 2; a chuck 6 which moves up and down along the clamping jaw 3 is horizontally arranged above the base 2, three through grooves 7 which are sleeved on the corresponding clamping jaw 3 are arranged on the chuck 6, the bottom surface of the chuck 6 is movably contacted with the top end of the screw 5, and the inner wall of the through groove 7, which is adjacent to the edge of the chuck 6, is an inclined surface 8 which inclines outwards and upwards from the bottom surface of the chuck 6 to the top surface of the chuck 6; when the torque test is carried out on the irregular bone test piece 15, the two clamps are horizontally fixed at two ends of a torsion testing machine 16 through connecting seats 1 respectively, the model of the used torsion testing machine 16 is ETT202, after the bone test piece 15 is fixed, the central lines of the two clamps are coaxial, and the clamping jaws 3 are oppositely arranged; when the chuck 6 of the clamp moves to the bottom ends of the clamping jaws 3, the three clamping jaws 3 can be outwards opened to abut against the inclined surfaces 8 of the corresponding through grooves 7, the end parts of bones can be correspondingly placed in the middles of the three clamping jaws 3 at the moment, then the chuck 6 moves towards the top ends of the clamping jaws 3, the three clamping jaws 3 are closed and simultaneously clamp the bones under the action of the inclined surfaces 8, and then the screw 5 is rotated to tightly push the chuck 6; therefore, the fixture can be used for stably clamping irregular bones, the bones are not easy to slide when torsion testing is carried out, and the testing accuracy is improved.
The base 2 comprises a fixed base 9 and a movable base 10 arranged on the top surface of the fixed base 9; the fixed base 9 is fixedly connected with the connecting seat 1 through a connecting rod 4, the edge of the base 2 is provided with a notch 11 corresponding to the bottom end of the clamping jaw 3, the top surface of the fixed base 9 is provided with an annular groove 12 penetrating through each notch 11, an arc-shaped articulated shaft 13 penetrating through the bottom end of each clamping jaw 3 is arranged in each annular groove 12, the movable base 10 is fixedly connected with the fixed base 9 through a bolt, and the articulated shaft 13 is clamped between the fixed base 9 and the movable base 10; the base 2 is arranged to be in a structure that the fixed base 9 is detachably connected with the movable base 10, and the clamping jaw 3 is fixed on the base 2 through the detachable hinge shaft 13, so that the clamping jaw 3 can be detached, and the clamp is convenient to carry and store; the anti-skid stripes 14 are vertically arranged on the inner wall of the top end of the clamping jaw 3, so that the friction force between the clamping jaw 3 and the bone test piece 15 can be increased, and the clamping jaw 3 can clamp the bone test piece 15 more stably.
Instructions for use: when the bone test piece 15 is subjected to torque test, firstly, two clamps are horizontally fixed at two ends of a torque tester through the connecting seats 1 respectively, after the two clamps are fixed, the center lines of the two clamps are coaxial, the clamping jaws 3 are arranged oppositely, the chuck 6 of the clamp is positioned at the bottom ends of the clamping jaws 3 in an initial state, and the three clamping jaws 3 can be outwards opened to abut against the inclined surfaces 8 of the corresponding through grooves 7; then, two ends of a bone test piece 15 are correspondingly placed between the three clamping jaws 3 of the two clamps, the chuck 6 is moved towards the top ends of the clamping jaws 3, the three clamping jaws 3 are closed and simultaneously clamp the bone under the action of the inclined planes 8, and the screw 5 is rotated in the forward direction to tightly push the chuck 6, so that the bone test piece 15 is stably clamped through the clamps; after the test is finished, the screw 5 is rotated reversely, the chuck 6 is loosened, the chuck 6 is moved to the bottom ends of the clamping jaws 3, and the bone test piece 15 is taken out.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. The fixture for testing the bone torque is characterized by comprising a connecting seat, a base and a clamping jaw; the top surface of the connecting seat is fixedly provided with the horizontally arranged base through a connecting rod, at least three clamping jaws which are uniformly distributed are vertically arranged along the edge above the base, the bottom ends of the clamping jaws are hinged with the edge of the base, the clamping jaws are vertically and rotatably arranged, at least three screw rods which are uniformly distributed along the circumferential direction are vertically penetrated and screwed on the top surface of the base, and the bottom ends of the screw rods are movably arranged below the base; the base top level is equipped with the edge the chuck that the clamping jaw reciprocated, be equipped with three cover on the chuck and be located corresponding logical groove on the clamping jaw, the bottom surface of chuck with the top movable contact of screw rod, it is adjacent to lead to the groove the inner wall at chuck edge be by the chuck bottom surface extremely the inclined plane of chuck top surface tilt up outwards.
2. The jig for bone torque testing as defined in claim 1, wherein the base includes a fixed base and a movable base disposed on a top surface of the fixed base; the fixing base passes through the connecting rod with connecting seat fixed connection, the edge of base be equipped with the opening that the bottom of clamping jaw corresponds, fixing base's top surface is equipped with link up every the ring channel of opening, be equipped with in the ring channel and wear to locate every the curved articulated shaft of clamping jaw bottom, the activity base pass through the bolt with fixing base fixed connection, and will the articulated shaft clamp is located fixing base with between the activity base.
3. The bone torque test fixture according to any one of claims 1 or 2, wherein the top end inner wall of the clamping jaw is vertically provided with anti-slip stripes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920970555.7U CN209858115U (en) | 2019-06-25 | 2019-06-25 | Clamp for bone torque test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920970555.7U CN209858115U (en) | 2019-06-25 | 2019-06-25 | Clamp for bone torque test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209858115U true CN209858115U (en) | 2019-12-27 |
Family
ID=68942531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920970555.7U Expired - Fee Related CN209858115U (en) | 2019-06-25 | 2019-06-25 | Clamp for bone torque test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209858115U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112975270A (en) * | 2021-05-10 | 2021-06-18 | 烟台红卫建筑工程服务有限公司 | Roller press for metal surface machining based on adjusting assembly |
| CN113771060A (en) * | 2021-09-27 | 2021-12-10 | 季华实验室 | Clamping mechanism and multi-fruit rapid picking robot |
| CN114193498A (en) * | 2022-02-17 | 2022-03-18 | 鹰星精密工业（深圳）有限公司 | Multipoint adsorption type manipulator clamping jaw and clamping method |
-
2019
- 2019-06-25 CN CN201920970555.7U patent/CN209858115U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112975270A (en) * | 2021-05-10 | 2021-06-18 | 烟台红卫建筑工程服务有限公司 | Roller press for metal surface machining based on adjusting assembly |
| CN113771060A (en) * | 2021-09-27 | 2021-12-10 | 季华实验室 | Clamping mechanism and multi-fruit rapid picking robot |
| CN114193498A (en) * | 2022-02-17 | 2022-03-18 | 鹰星精密工业（深圳）有限公司 | Multipoint adsorption type manipulator clamping jaw and clamping method |
| CN114193498B (en) * | 2022-02-17 | 2022-04-22 | 鹰星精密工业（深圳）有限公司 | Multipoint adsorption type manipulator clamping jaw and clamping method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191227 |