CN112220548A - Axial tensioner capable of measuring force - Google Patents
Axial tensioner capable of measuring force Download PDFInfo
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- CN112220548A CN112220548A CN202011027923.8A CN202011027923A CN112220548A CN 112220548 A CN112220548 A CN 112220548A CN 202011027923 A CN202011027923 A CN 202011027923A CN 112220548 A CN112220548 A CN 112220548A
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- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 7
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 7
- 241001330002 Bambuseae Species 0.000 claims description 7
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 7
- 239000011425 bamboo Substances 0.000 claims description 7
- 230000000694 effects Effects 0.000 abstract description 6
- 230000001771 impaired effect Effects 0.000 abstract 1
- 238000009434 installation Methods 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 208000010392 Bone Fractures Diseases 0.000 description 1
- 208000020084 Bone disease Diseases 0.000 description 1
- 206010017076 Fracture Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
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- 230000003111 delayed effect Effects 0.000 description 1
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- 238000003780 insertion Methods 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/04—Measuring force or stress, in general by measuring elastic deformation of gauges, e.g. of springs
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Abstract
The application relates to an axial tensioner capable of measuring force, which comprises a machine barrel, wherein a clamping component and a driving component for driving the clamping component to move are arranged in the machine barrel; the clamping assembly can move horizontally along the axis of the machine barrel, the driving assembly comprises a threaded rod, a threaded hole for the threaded rod to penetrate through is formed in the clamping assembly, and the threaded rod is parallel to the axis of the machine barrel; an indicating chute parallel to the axis of the machine barrel is formed in the inner side wall of the machine barrel, an indicating piece is mounted on the threaded rod and penetrates through the indicating chute, the distance between the indicating piece and one end of the threaded rod is always equal, and the threaded rod can normally rotate; the limiting part is fixedly arranged in the machine barrel, the elastic part is arranged between the limiting part and the indicating part, two ends of the elastic part are respectively connected with the limiting part and the indicating part, and when the indicating part is arranged in the indicating sliding groove in a penetrating mode, the elastic part is always in a linear elastic range. This application has and is difficult for appearing because the pulling force is too big and surpass the effect of maximum load, makes the impaired phenomenon of axial strainer screw thread.
Description
Technical Field
The application relates to the field of medical instruments, in particular to an axial tensioner capable of measuring force.
Background
In recent years, many people often select a method of using an annular external fixation stent to treat various bone diseases such as open surgery, deformity correction, and bone transportation. The annular external fixing bracket has the problems of postoperative needle channel infection, delayed fracture healing and nonunion, and the main reason of causing the defects or the complications is that the tension of the kirschner wire is too small or too large when the kirschner wire is fixed in an operation.
Currently, the k-wire is usually fixed by a puller during the operation. The first type is an industrial rivet gun, the pulling distance is short, the rivet gun needs to be tightened for many times after being fixed in an operation, and the tightening force and the tightening length cannot be controlled; the second type of axial tensioner is a threaded conduction type axial tensioner, which usually uses 60 ° threads, but is prone to thread damage and failure due to excessive tension exceeding the maximum load during use.
In view of the above-mentioned related technologies, the inventor believes that the existing axial tensioner has a problem that the tension value cannot be measured, which easily causes the tension to be too large and exceed the maximum load, so that the thread of the axial tensioner is damaged.
Disclosure of Invention
In order to improve the problem that the axial tensioner is too big and exceeds the maximum load because the tensile value can not be measured, and the thread of the axial tensioner is damaged, the application provides an axial tensioner capable of measuring force.
The application provides a but axial tensioner of measurable power adopts following technical scheme:
an axial tensioner capable of measuring force comprises a machine barrel, wherein a clamping component for clamping a Kirschner wire and a driving component for driving the clamping component to move are arranged in the machine barrel; the clamping assembly can move horizontally along the axis of the machine barrel, the driving assembly comprises a threaded rod, a threaded hole for the threaded rod to penetrate through is formed in the clamping assembly, and the threaded rod is parallel to the axis of the machine barrel; an indicating chute parallel to the axis of the machine barrel is formed in the inner side wall of the machine barrel, an indicating piece is mounted on the threaded rod and penetrates through the indicating chute, the distance between the indicating piece and one end of the threaded rod is always equal, and the threaded rod can normally rotate; the limiting part is fixedly arranged in the machine barrel, the elastic part is arranged between the limiting part and the indicating part, two ends of the elastic part are respectively connected with the limiting part and the indicating part, and when the indicating part is arranged in the indicating sliding groove in a penetrating mode, the elastic part is always in a linear elastic range.
Through adopting above-mentioned technical scheme, when pulling the kirschner wire, fix the kirschner wire on this strainer through the centre gripping subassembly earlier to fix the position of barrel. Then, the threaded rod is further screwed into the threaded hole by rotating the threaded rod, and the distance between one end of the threaded rod, which is far away from the clamping assembly, and the clamping assembly is reduced, so that the distance between the limiting part fixedly installed in the machine barrel and the indicating part fixedly installed on the threaded rod is changed, and the elastic part between the limiting part and the indicating part is deformed. Because the position of the barrel is fixed and the distance between the indicator and the end of the threaded rod remains equal at all times, the force exerted by the resilient member on the threaded rod is equal to the force exerted by the threaded rod on the clamping assembly. And the elastic component is in the line elasticity within range, and the load that the elastic component received is linear relation with deformation, and the deformation volume of elastic component equals the amount of movement of indicator, consequently can obtain the distance of elastic component deformation through the distance that the indicator removed, and then reachs the size of the force that the screw rod applied to the centre gripping subassembly to simple measuring pulling force value. The phenomenon that the thread of the axial tensioner is damaged due to the fact that the maximum load is exceeded by overlarge tension force is not easy to occur.
Optionally, the limiting part is a limiting ring fixedly installed in the machine barrel, the inner diameter of the limiting ring is equal to the diameter of the threaded rod, and when the threaded rod is arranged in the limiting ring in a penetrating manner, a gap is formed between the threaded rod and the inner side wall of the machine barrel.
Through adopting above-mentioned technical scheme, when the threaded rod was worn to establish in the barrel and was rotated, because there was the space at the interval between threaded rod and the barrel inside wall, the frictional force that the threaded rod received is less, is convenient for rotate, and it is more convenient to use.
Optionally, the indicating part include two instruction bearings and press from both sides the instruction ring of establishing between the instruction bearing, instruct the bearing to be plane thrust bearing, instruct the bearing all with the barrel inside wall butt with the outside limit of instructing the ring, fixedly connected with indication strip on the outside limit of instructing the ring, and indicate that the strip is worn to establish in instructing the spout.
Through adopting above-mentioned technical scheme, when people rotated the threaded rod, instruct the bearing and can play the effect of reducing friction power, make and instruct ring and elastic component difficult along with the threaded rod rotates in the lump to be convenient for people to rotate the threaded rod, it is more laborsaving to use.
Optionally, the elastic element is a compression spring, the compression spring is sleeved on the threaded rod, two ends of the compression spring are respectively abutted to the indicating ring and the abutting bearing, and the limiting element is located on one side, close to the clamping assembly, of the indicating element.
Through adopting above-mentioned technical scheme, set up the elastic component into compression spring, compression spring is difficult for appearing exceeding the phenomenon of line elasticity scope when the compression. And when the device is used for tensioning the Kirschner wire, the length of the whole device cannot be increased, and the device is not easy to collide with peripheral devices.
Optionally, the cylinder is provided with a locking assembly, the locking assembly comprises a locking cover, the locking cover is detachably mounted at one end of the cylinder, which is far away from the clamping assembly, the threaded rod is fixedly provided with a locking ring, and the locking ring is positioned at one side of the indicating bearing, which is far away from the compression spring; the natural length of the elastic piece is greater than the distance between one end of the threaded rod close to the clamping assembly and the locking ring; when the locking cover is installed on the machine barrel, the locking cover and the indicating bearing are tightly abutted to the locking ring.
Through adopting above-mentioned technical scheme, because the natural length of elastic component is greater than the threaded rod and is close to the distance between the one end of centre gripping subassembly and the locking ring to make compression spring when installing on the threaded rod, can promote instruction bearing and locking ring butt all the time, thereby reach and make the distance between instruction bearing and the threaded rod one end remain the equal effect all the time. And then the locking cover is arranged on the machine barrel, so that the locking cover is abutted against the locking ring, and the position of the threaded rod is fixed.
Optionally, the locking cover includes a cover body and a locking bearing, the locking bearing is a planar thrust bearing, the locking bearing is located on one side of the cover body close to the locking ring, and the locking ring is tightly abutted to the locking bearing.
Through adopting above-mentioned technical scheme, installation locking bearing on the lid can be when installing the locking lid on the barrel and tentatively with the locking ring butt, reduces the frictional force between locking ring and the locking lid, is convenient for rotate the lid.
Optionally, the locking cover is provided with a locking hole, the threaded rod penetrates through the locking hole, a clamping piece for clamping the wrench is fixedly arranged on the threaded rod, and the clamping piece is located on one side, away from the clamping assembly, of the locking cover.
Through adopting above-mentioned technical scheme, through be provided with the holder on the threaded rod, can rotate the threaded rod through the spanner when the manpower can't rotate the threaded rod.
Optionally, the clamping assembly comprises a clamping barrel arranged in the machine barrel in a penetrating mode, a hole in the center of the clamping barrel is a clamping hole, a clamping screw hole is formed in the side wall of the clamping hole, a clamping screw rod is arranged in the clamping screw hole in a penetrating mode, a long-strip-shaped clamping through groove is formed in the outer side wall of the machine barrel, the central line of the two ends of the clamping through groove is parallel to the axis of the machine barrel, the clamping screw rod penetrates through the clamping through groove, and a manual adjusting knob is fixedly arranged on the end face, away from the machine shell.
Through adopting above-mentioned technical scheme, when fixed kirschner wire, wear to establish in a centre gripping section of thick bamboo with the one end of kirschner wire, and the length that the kirschner wire wore to establish in a centre gripping section of thick bamboo is greater than the distance between centre gripping screw and the centre gripping hole opening. And then the clamping screw rod is rotated through a manual adjusting knob, so that the clamping screw rod tightly clamps the Kirschner wire, and the fixation of the Kirschner wire is completed. The length of the clamping through groove is the distance that the Kirschner wire can move when the Kirschner wire is tensioned every time.
Optionally, the outer side surface of the clamping barrel is provided with a long-strip-shaped anti-rotation groove, the central lines of two ends of the anti-rotation groove are parallel to the axis of the machine barrel, the bottom surface of the anti-rotation groove is a plane, and an anti-rotation pin tightly abutted to the bottom surface of the anti-rotation groove is fixedly mounted on the inner side wall of the machine barrel.
Through adopting above-mentioned technical scheme, because for the ease of screwing in the centre gripping screw rod, the diameter of centre gripping screw rod slightly is less than the width that the centre gripping led to the groove usually, consequently can not lead to the groove through the centre gripping and restrict a centre gripping section of thick bamboo and rotate, otherwise appear the slight pivoted phenomenon of kirschner wire easily, lead to the effect of influence operation. Through the fixed mounting have with plane butt stop pin in the barrel, can be accurate the position of restriction centre gripping section of thick bamboo, make the centre gripping section of thick bamboo can move along the axis of barrel and not rotate. And compared with the mode that holes with the same size as the anti-rotation pins are machined during machining, the machining of the planes which are mutually abutted is easier and the machining is easy.
Optionally, the center of the end face of the threaded rod is provided with an inserting hole, the diameter of the inserting hole is equal to that of the clamping hole, the axis of the inserting hole is collinear with that of the clamping hole, and chamfers are arranged at one end, far away from the threaded rod, of the clamping hole and one end, close to the clamping hole, of the inserting hole.
Through adopting above-mentioned technical scheme, insert the axis collineation of establishing hole and centre gripping hole, when wearing to establish the kirschner wire, can wear to establish the longer kirschner wire of length, make the application range of this strainer more extensive. The design of chamfer can play the effect of guide, makes the more easy wearing and establishing in centre gripping hole and the hole of inserting of ke shi needle.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the phenomenon that the thread of the axial tensioner is damaged due to the fact that the maximum load is exceeded by overlarge tension is not easy to occur;
2. the tensioning device is simple in structure, and can be used for penetrating the Kirschner wire with longer length when the Kirschner wire is penetrated, so that the tensioning device is wider in application range.
Drawings
Fig. 1 is an installation diagram of the present embodiment.
Fig. 2 is a cross-sectional view of the barrel.
FIG. 3 is a schematic view of the installation of the clamping assembly, the actuating assembly and the locking assembly.
Description of reference numerals: 1. a barrel; 11. a limiting ring; 12. a clamping cavity; 13. a drive cavity; 2. a clamping assembly; 21. a clamping cylinder; 22. an anti-rotation slot; 221. an anti-rotation pin; 23. a clamping hole; 24. clamping the screw hole; 25. clamping the through groove; 26. clamping the screw rod; 27. an adjustment groove; 28. a manual adjustment knob; 3. a drive assembly; 31. a threaded rod; 32. a threaded hole; 33. inserting the holes; 34. a compression spring; 35. indicating a bearing; 36. an indicator ring; 361. an indicator strip; 37. an indication chute; 4. a locking assembly; 41. locking a ring; 42. a locking cover; 421. a cover body; 422. locking the bearing; 43. a locking hole; 5. rotating the handle; 6. a clamping member.
Detailed Description
The present application is described in further detail below with reference to figures 1-3.
The embodiment of the application discloses axial tensioner capable of measuring force. Referring to fig. 1 and 2, the force-measurable axial tensioner comprises a barrel 1 having a cylindrical shape, and a clamping assembly 2, a driving assembly 3 and a locking assembly 4 are sequentially installed from one end to the other end of the barrel 1.
Referring to fig. 2 and 3, a limiting ring 11 is integrally formed at the center of the barrel 1, cavities at both sides of the limiting ring 11 are respectively referred to as a clamping cavity 12 and a driving cavity 13, and the clamping assembly 2 is located in the clamping cavity 12. The clamping assembly 2 comprises a clamping cylinder 21, the outer diameter of the clamping cylinder 21 being equal to the diameter of the clamping cavity 12. An anti-rotation groove 22 is formed in the end face of the clamping cylinder 21, the length of the anti-rotation groove 22 is equal to that of the clamping cylinder 21, and a gap is formed between the anti-rotation groove 22 and the inner side face of the clamping cylinder 21. The cross section of the anti-rotation groove 22 is in a shape of a minor arc segment, the inner side surface of the anti-rotation groove 22 is divided into a plane and an arc surface, and the arc surface of the anti-rotation groove 22 is overlapped with the outer side surface of the clamping barrel 21. An anti-rotation pin 221 is fixedly mounted on the inner side surface of the clamping cavity 12, one end of the anti-rotation groove 22, which is far away from the inner side surface of the machine barrel 1, is a plane and is tightly abutted to the plane of the anti-rotation groove 22, and the distance between the anti-rotation pin 221 and the limiting ring 11 is smaller than the length of the clamping barrel 21. By fixedly mounting the rotation preventing pin 221 abutting on the flat surface in the cylinder 1, the position of the clamping cylinder 21 can be accurately limited, the clamping cylinder 21 can move along the axis of the cylinder 1 without rotating along itself, and the processing is easier.
Referring to fig. 2 and 3, a hole in the center of the clamping cylinder 21 is a clamping hole 23, the clamping hole 23 is collinear with the axis of the stop collar 11, and a clamping screw hole 24 is formed in a side wall of the clamping hole 23 away from the anti-rotation groove 22. A clamping through groove 25 is formed in one side, far away from the anti-rotation pin 221, of the inner side wall of the clamping cavity 12, the clamping through groove 25 is long in strip shape, and the central lines of two ends of the clamping through groove 25 are parallel to the axis of the machine barrel 1. A clamping screw 26 is arranged in the clamping screw hole 24 in a penetrating way, and one end of the clamping screw 26 far away from the clamping cylinder 21 penetrates through the clamping through groove 25. An end face of the clamping screw 26, which is far away from one end of the clamping cylinder 21, is provided with a rectangular adjusting groove 27, a manual adjusting knob 28 penetrates through the adjusting groove 27, and the clamping screw 26 can be driven to rotate by rotating the manual adjusting knob 28. The clamping hole 23 is provided with a chamfer at one end away from the stop collar 11. When the Kirschner wire is fixed, one end of the Kirschner wire is inserted into the clamping cylinder 21, and the length of the Kirschner wire inserted into the clamping cylinder 21 is longer than the distance between the clamping screw hole 24 and the opening of the clamping hole 23. Then, the clamping screw 26 is rotated through the manual adjusting knob 28, so that the clamping screw 26 tightly clamps the kirschner wire, and the fixation of the kirschner wire is completed.
Referring to fig. 2 and 3, the driving assembly 3 includes a threaded rod 31, the diameter of the threaded rod 31 is equal to the diameter of the limiting ring 11, and the threaded rod 31 is inserted into the limiting ring 11. The end surface of the clamping cylinder 21 close to the limiting ring 11 is provided with a threaded hole 32, and the axis of the threaded hole 32 is collinear with the axis of the clamping hole 23. The threaded rod 31 is mounted in a threaded bore 32 at the end located in the clamping cavity 12. An inserting hole 33 is formed in the end face of the threaded rod 31, the axis of the inserting hole 33 is collinear with the axis of the clamping hole 23, and a chamfer is formed at one end, close to the clamping hole 23, of the inserting hole 33. The insertion hole 33 and the axis of the clamping hole 23 are collinear, so that a kirschner wire with longer length can be inserted when the kirschner wire is inserted, and the application range of the tensioner is wider.
Referring to fig. 2 and 3, the drive assembly 3 further includes a resilient member and an indicator member disposed within the drive cavity 13. The elastic element is a compression spring 34 and is sleeved on the threaded rod 31, and the indicating element is positioned on one side of the elastic element, which is far away from the limit ring 11. The indicating piece comprises two indicating bearings 35 and an indicating ring 36, the inner diameters of the indicating bearings 35 and the indicating ring 36 are equal to the outer diameter of the threaded rod 31, the indicating bearings 35 are plane thrust bearings, and the indicating ring 36 is clamped between the two indicating bearings 35. The two ends of the elastic element are respectively abutted with the limiting ring 11 and the indicating bearing 35. The locking assembly 4 comprises a locking ring 41 integrally formed on the lower threaded rod 31, the locking ring 41 being located on the side of the indicator remote from the resilient member. The natural length of the compression spring 34 is greater than the distance between the end of the threaded rod 31 located in the clamping cavity 12 and the locking ring 41, that is, when the compression spring 34 is installed between the stop ring 11 and the locking ring 41, the compression spring 34 is always in a compressed state, and further the indicator can be pushed to always abut against the locking ring 41, so that the position of the indicator and the position of the locking ring 41 are kept relatively fixed. An indication chute 37 is formed in the inner side wall of the driving cavity 13, the central lines of two ends of the indication chute 37 are parallel to the axis of the machine barrel 1, and scales are arranged on the side edge of the indication chute 37; an indicating strip 361 is integrally formed on the outer side edge of the indicating ring 36, and the indicating strip 361 is arranged in the indicating chute 37 in a penetrating mode. When the indicating strip 361 is inserted into the indicating chute 37, the compression spring 34 is always in the linear elastic range.
Referring to fig. 2 and 3, the locking assembly 4 further includes a locking cover 42, the locking cover 42 includes a cover 421 and a locking bearing 422 installed in the cover 421, and the locking bearing 422 is a planar thrust bearing. A screw thread is provided on the outer side surface of the end of the cylinder 1 where the driving cavity 13 is provided, a cap 421 is threadedly mounted on this end, and a locking bearing 422 in the cap 421 is in close abutment with the locking ring 41. The position of the threaded rod 31 can be easily fixed by attaching the locking cap 42 to the cylinder 1 and bringing the locking cap 42 into contact with the locking ring 41.
Referring to fig. 2 and 3, the cover 421 has a locking hole 43, and the threaded rod 31 passes through the locking hole 43. The threaded rod 31 is fixedly provided with a rotating handle 5 at one end outside the machine barrel 1. The clamping piece 6 is integrally formed at the position where the threaded rod 31 is adjacent to the rotating handle 5, the clamping piece 6 is a nut, and the axis of the clamping piece 6 is collinear with the axis of the threaded rod 31. The threaded rod 31 can be rotated by a wrench when the threaded rod 31 cannot be rotated by a human power.
The implementation principle of the axial tensioner capable of measuring force in the embodiment of the application is as follows: in use, the k-wire is secured to the tensioner by the clamping assembly 2 and the position of the barrel 1 is fixed. Then, by rotating the threaded rod 31, the threaded rod 31 is further screwed into the threaded hole 32, and the distance between the end of the threaded rod 31 provided with the handle and the clamping assembly 2 is reduced, so that the distance between the limit ring 11 and the indicating ring 36 is reduced, and the compression spring 34 between the limit ring 11 and the indicating ring 36 is further compressed. Since the position of the barrel 1 is fixed and the indicating ring 36 is always abutted against the locking ring 41, the pushing force of the compression spring 34 against the threaded rod 31 is equal to the pulling force of the threaded rod 31 against the clamping member 2, so that the clamping member 2 pulls the k-wire. The elastic piece is in the linear elasticity range, the load borne by the compression spring 34 and the deformation are in a linear relation, and the deformation length of the compression spring 34 is the moving distance of the indicating strip 361, so that the force applied to the clamping component 2 by the threaded rod 31 can be obtained by the scale displacement on the edge of the indicating chute 37, and the tension value can be simply measured. The probability that the thread of the axial tensioner is damaged due to the fact that the maximum load is exceeded by overlarge tension is effectively reduced.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. Axial tensioner with measurable force, comprising a barrel (1), characterized in that: a clamping component (2) for clamping the Kirschner wire and a driving component (3) for driving the clamping component (2) to move are arranged in the machine barrel (1); the clamping assembly (2) can translate along the axis of the machine barrel (1), the driving assembly (3) comprises a threaded rod (31), a threaded hole (32) for the threaded rod (31) to penetrate through is formed in the clamping assembly (2), and the threaded rod (31) is parallel to the axis of the machine barrel (1); an indicating chute (37) parallel to the axis of the machine barrel (1) is formed in the inner side wall of the machine barrel (1), an indicating piece is mounted on the threaded rod (31), the indicating piece penetrates through the indicating chute (37), the distance between the indicating piece and one end of the threaded rod (31) is always equal, and the threaded rod (31) can normally rotate; a limiting part is fixedly arranged in the machine barrel (1), an elastic part is arranged between the limiting part and the indicating part, two ends of the elastic part are respectively connected with the limiting part and the indicating part, and when the indicating part is arranged in the indicating sliding groove (37) in a penetrating mode, the elastic part is always in a linear elastic range.
2. The tension measurable in the axial direction as set forth in claim 1 wherein: the locating part be spacing ring (11) of fixed mounting in barrel (1), the internal diameter of spacing ring (11) equals with the diameter of threaded rod (31), and threaded rod (31) wear to establish when spacing ring (11), there is the space at the interval between threaded rod (31) and barrel (1) inside wall.
3. The tensioner of claim 2, wherein: the indicating piece include two instruction bearings (35) and press from both sides and establish instruction ring (36) between instruction bearing (35), indicate bearing (35) and be plane thrust bearing, indicate bearing (35) and the outside limit of instructing ring (36) all with barrel (1) inside wall butt, fixedly connected with on the outside limit of instructing ring (36) instructs strip (361), and instructs strip (361) to wear to establish in instructing spout (37).
4. The tension measurable in the axial direction as set forth in claim 3 wherein: the elastic part be compression spring (34), compression spring (34) cover is established on threaded rod (31), the both ends of compression spring (34) respectively with indicate ring (36) and butt bearing butt, the locating part is located the one side that the indicator is close to centre gripping subassembly (2).
5. The tensioner of claim 4, wherein: the locking assembly (4) is mounted on the machine barrel (1), the locking assembly (4) comprises a locking cover (42), the locking cover (42) is detachably mounted at one end, away from the clamping assembly (2), of the machine barrel (1), a locking ring (41) is fixedly arranged on the threaded rod (31), and the locking ring (41) is located on one side, away from the compression spring (34), of the indicating bearing (35); the natural length of the elastic piece is larger than the distance between one end of the threaded rod (31) close to the clamping assembly (2) and the locking ring (41); when the locking cover (42) is mounted on the machine barrel (1), the locking cover (42) and the indicating bearing (35) are tightly abutted with the locking ring (41).
6. The tensioner of claim 5, wherein: the locking cover (42) comprises a cover body (421) and a locking bearing (422), the locking bearing (422) is a plane thrust bearing, the locking bearing (422) is positioned on one side, close to the locking ring (41), of the cover body (421), and the locking ring (41) is tightly abutted to the locking bearing (422).
7. The tensioner of claim 5, wherein: locking lid (42) on seted up locking hole (43), locking hole (43) are worn to establish by threaded rod (31), fixed holder (6) that are provided with the confession spanner centre gripping on threaded rod (31), holder (6) are located one side that clamping assembly (2) were kept away from in locking lid (42).
8. The tension measurable in the axial direction as set forth in claim 1 wherein: centre gripping subassembly (2) including wearing to establish a centre gripping section of thick bamboo (21) in barrel (1), the hole at centre gripping section of thick bamboo (21) center is centre gripping hole (23), centre gripping screw (24) have been seted up on the lateral wall of centre gripping hole (23), wear to be equipped with clamping screw (26) in centre gripping screw (24), the centre gripping that sets up rectangular shape leads to groove (25) on the lateral wall of barrel (1), the centre line that the centre gripping led to groove (25) both ends is parallel with the axis of barrel (1), and clamping screw (26) wear to establish centre gripping and lead to groove (25), clamping screw (26) keep away from on the terminal surface of casing fixed manual adjust knob (28) that is provided with.
9. The tension measurable in the axial direction as set forth in claim 8 wherein: the clamping cylinder (21) is provided with a long-strip-shaped anti-rotation groove (22) on the outer side surface, the central lines at the two ends of the anti-rotation groove (22) are parallel to the axis of the machine barrel (1), the bottom surface of the anti-rotation groove (22) is a plane, and an anti-rotation pin (221) tightly abutted to the bottom surface of the anti-rotation groove (22) is fixedly mounted on the inner side wall of the machine barrel (1).
10. The tension measurable in the axial direction as set forth in claim 8 wherein: the center department of threaded rod (31) terminal surface seted up and inserted hole (33), the diameter of inserting hole (33) equals the diameter of centre gripping hole (23), and the axis of inserting hole (33) and the axis collineation of centre gripping hole (23), keep away from the one end of threaded rod (31) in centre gripping hole (23) and insert the one end department that hole (33) is close to centre gripping hole (23) and all be provided with the chamfer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011027923.8A CN112220548B (en) | 2020-09-26 | 2020-09-26 | Axial tensioner capable of measuring force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011027923.8A CN112220548B (en) | 2020-09-26 | 2020-09-26 | Axial tensioner capable of measuring force |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112220548A true CN112220548A (en) | 2021-01-15 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113069198A (en) * | 2021-05-07 | 2021-07-06 | 北京力达康科技有限公司 | Novel nail puller |
| CN113686662A (en) * | 2021-08-31 | 2021-11-23 | 陕西科技大学 | Adjustable measuring device for leather |
| CN117338374A (en) * | 2023-10-07 | 2024-01-05 | 上海威高医疗技术发展有限公司 | Basket stone taking device |
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| CN203029371U (en) * | 2012-12-29 | 2013-07-03 | 重庆西山科技有限公司 | Kirschner wire adjustable clamping mechanism |
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| CN211484716U (en) * | 2019-11-26 | 2020-09-15 | 中国人民解放军陆军军医大学第二附属医院 | Auxiliary coning tool |
| CN214104585U (en) * | 2020-09-26 | 2021-09-03 | 北京中安泰华科技有限公司 | Axial tensioner capable of measuring force |
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| US4936843A (en) * | 1989-02-16 | 1990-06-26 | Ace Orthopedic Manufacturing | Kirschner wire clamp and tensioner |
| CN203029371U (en) * | 2012-12-29 | 2013-07-03 | 重庆西山科技有限公司 | Kirschner wire adjustable clamping mechanism |
| CN107280758A (en) * | 2017-07-21 | 2017-10-24 | 湖南丹尼尔智能科技有限公司 | A kind of orthopaedics Kirschner wire fixation device |
| CN109955082A (en) * | 2017-12-26 | 2019-07-02 | 惠州市富池精工股份有限公司 | A kind of locking clamping device |
| CN110432973A (en) * | 2019-08-15 | 2019-11-12 | 张明 | A kind of Kirschner wire propeller of the orthopaedics with self-locking function |
| CN211484716U (en) * | 2019-11-26 | 2020-09-15 | 中国人民解放军陆军军医大学第二附属医院 | Auxiliary coning tool |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113069198A (en) * | 2021-05-07 | 2021-07-06 | 北京力达康科技有限公司 | Novel nail puller |
| CN113686662A (en) * | 2021-08-31 | 2021-11-23 | 陕西科技大学 | Adjustable measuring device for leather |
| CN117338374A (en) * | 2023-10-07 | 2024-01-05 | 上海威高医疗技术发展有限公司 | Basket stone taking device |
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