CN207051109U - Clamp assembly and tobacco leaf testing device for shear strength - Google Patents

Abstract

It the utility model is related to papermaking-method reconstituted tobaccos shear strength test tobacco leaf equipment technical field, more particularly to a kind of clamp assembly and tobacco leaf testing device for shear strength.Clamp assembly includes fixture connecting seat, depression bar fixed seat, tobacco leaf seat and at least two groups of positioning components；Fixture connecting seat is connected with pressure sensor and depression bar fixed seat respectively；The bottom of depression bar fixed seat offers mounting groove；The afterbody fitting of depression bar is arranged in mounting groove；The cell wall of depression bar and mounting groove is detachably connected；Tobacco leaf seat is connected with base, and two groups of positioning components are connected with tobacco leaf seat；Tobacco leaf seat is used to place tobacco leaf to be measured, and two groups of positioning components are respectively used to fasten tobacco leaf to be measured；Offered at the top of tobacco leaf seat one longitudinally through and face depression bar head longitudinal fluting.Tobacco leaf testing device for shear strength includes above-mentioned clamp assembly.Above-mentioned clamp assembly and tobacco leaf testing device for shear strength so that depression bar is readily replaceable, and test result is more accurate.

Description

Clamp assembly and tobacco leaf testing device for shear strength

Technical field

Papermaking-method reconstituted tobaccos shear strength test tobacco leaf equipment technical field is the utility model is related to, more particularly to it is a kind of Clamp assembly and tobacco leaf testing device for shear strength.

Background technology

Papermaking-method reconstituted tobaccos are with tobacco materials such as offal, offal, fragments, are equipped with the production that adhesive etc. reconfigures Product；Because it has, Filling power is high, releasing content of coke tar bottom, and can according to being actually needed to the physical properties of papermaking-method reconstituted tobaccos and Intrinsic chemical index carries out the advantages such as artificial regulatory, it has also become the important composition portion of cigarette composition especially low-coke tar cigarette formula Point.Because the institutional framework of papermaking-method reconstituted tobaccos has larger difference with tobacco leaf, therefore papermaking-method reconstituted tobaccos add through filament cutter After work, tobacco cut width uniformity is poor, qualification rate is relatively low, influences cigarette inherent quality stability；Meanwhile when being made in tobacco leaf formulation When the ratio of paper method reconstituted tobacco is increased to a certain extent, then need to reduce the production of race piece by improving chopping knife door pressure It is raw, and too high knife door pressure can then make pipe tobacco color turn deep, influence the gloss of cigarette product, to its it is jealous can also produce it is unfavorable Influence.

In the prior art, the tobacco leaf shearing that many kinds are tested the shear strength of papermaking-method reconstituted tobaccos be present Strength testing device, tobacco leaf testing device for shear strength be typically all by driving lifting seat to move back and forth, to drive indirectly with The depression bar that tobacco leaf directly contacts moves back and forth, to cause depression bar to produce shearing force to tobacco leaf, and by being arranged on lifting seat and pressure Pressure sensor between bar tests pressure value during tobacco leaf fracture, to draw the shear strength of tobacco leaf indirectly；So as to make The research of paper method reconstituted tobacco chopping performance provides basic data, while improves paper-making method reconstructed cigarette for reconstituted tobacco manufacturing enterprise The mechanical property of leaf provides foundation.However, the head end that the depression bar of pressure is provided to tobacco leaf directly contacts with tobacco leaf, in test process In, the head of depression bar can all produce different degrees of abrasion between tobacco leaf, and prolonged abrasion accumulation can influence the essence of depression bar Degree, cause the inaccuracy of test result；And the depression bar in existing tobacco leaf testing device for shear strength, it is not easy to change, and more Expenses Cost is higher when changing.

To sum up, the upper of the existing tobacco leaf testing device for shear strength tested papermaking-method reconstituted tobaccos how is overcome It is those skilled in the art's technical problem urgently to be resolved hurrily to state defect.

Utility model content

The purpose of this utility model is to provide a kind of clamp assembly and tobacco leaf testing device for shear strength, existing to alleviate Depression bar existing for tobacco leaf testing device for shear strength in technology is not easy to change, and wastes time and energy and cost is high, test result is forbidden True technical problem.

Clamp assembly provided by the utility model, including fixture connecting seat, depression bar fixed seat and tobacco clamp.

Wherein, the top of the fixture connecting seat and the bottom of pressure sensor connect；The bottom of the fixture connecting seat It is connected with the top of the depression bar fixed seat；The bottom of the depression bar fixed seat offers installation of the opening towards the tobacco leaf seat Groove；The afterbody of depression bar is located in the mounting groove, and two sides of the both sides cell wall of the mounting groove respectively with the depression bar are pasted Close and set；The cell wall of the depression bar and the mounting groove is detachably connected.

The tobacco clamp includes tobacco leaf seat and at least two groups of positioning components；The tobacco leaf seat and tobacco leaf shear strength test The base connection of device, positioning component described in two groups are connected with the tobacco leaf seat；The tobacco leaf seat is used to place tobacco leaf to be measured, Positioning component described in two groups is respectively used to fasten the tobacco leaf to be measured；Offered at the top of the tobacco leaf seat one longitudinally through Longitudinal fluting, and the head of depression bar described in the longitudinal fluting face..

Further, the transverse concave groove extended transversely through, the transverse concave groove and institute are further opened with the top of the tobacco leaf seat State longitudinal fluting to be vertically arranged, and the groove depth of the transverse concave groove is less than the groove depth of the longitudinal fluting；The tobacco leaf to be measured is put Put in the transverse concave groove, and the groove width of the transverse concave groove is identical with the width of the tobacco leaf to be measured.

Further, the top surface of the tobacco leaf seat includes planar portions and two inclined plane parts, and the planar portions are rectangle shape Shape；Two inclined plane parts are symmetricly set on the both sides of the planar portions, and two inclined plane parts by centre to two lateral Bottom extends；The longitudinal fluting is opened in the planar portions, and the both sides cell wall of the longitudinal fluting is each parallel to described The longitudinal centre line of rectangle.

Further, angle of two inclined plane parts between the planar portions is 150 degree.

Further, it is smooth surface transition between the planar portions and two inclined plane parts.

Further, positioning component described in every group includes pressing plate, location-plate, hold-down bolt and at least two bearing pins；Institute Stating pressing plate includes longitudinal briquetting in bottom and the cross-brace in top, and the pressing plate is T-shaped structure；The transverse direction The relatively described longitudinal briquetting of two flanks of support is symmetrical arranged；Longitudinal briquetting is oppositely arranged with the transverse concave groove, and The width of longitudinal briquetting is less than the groove width of the transverse concave groove；The bottom surface of the top surface of the cross-brace and the location-plate Fitting is set.

At least one first through hole is offered respectively on two flanks of the cross-brace, is offered on the location-plate First screwed hole and at least two second through holes；The first through hole, second through hole and the bearing pin correspond；Institute State bearing pin and sequentially pass through corresponding second through hole and the first through hole, be connected with the tobacco leaf seat；First screw thread Hole is arranged on the center of the location-plate, and the hold-down bolt coordinates with first screwed hole, and the hold-down bolt is worn First screwed hole is crossed to abut with the top of the cross-brace.

Further, positioning component described in every group also includes at least two back-moving springs；Opened at the top of the tobacco leaf seat Provided with least four circular grooves；The both ends of the back-moving spring bottom with the flank of the cross-brace and the circle respectively The bottom land connection of connected in star；The back-moving spring corresponds with the bearing pin；The bearing pin sequentially pass through corresponding to described the The inside of two through holes, the first through hole and the back-moving spring, it is connected with the tobacco leaf seat.

Further, the clamp assembly also includes fixed seat, longitudinally adjust plate, longitudinally secured screw, lateral adjustments plate With four horizontal fastening screws；The fixed seat is connected with the base, bottom of the fixed seat also with the longitudinally adjust plate Portion's fitting is set；The top of the longitudinally adjust plate is bonded with the bottom of the lateral adjustments plate；The top of the lateral adjustments plate Portion is connected with the bottom of the tobacco leaf seat.

The first rectangle mounting hole and four the second screwed holes, the first rectangle installation are offered on the longitudinally adjust plate Hole position is uniformly arranged on the edge of the longitudinally adjust plate in the center of the longitudinally adjust plate, four second screwed holes； Longitudinal seamed edge of the first rectangle mounting hole is longer than horizontal seamed edge；The 3rd screwed hole is offered in the fixed seat, it is described vertical Coordinate to fastening screw through the first rectangle mounting hole and the 3rd screwed hole.

Central through hole and four the second rectangle mounting holes are offered on the lateral adjustments plate；The longitudinally secured screw Head is located in the central through hole, and four the second rectangle mounting holes are uniformly arranged on the edge of the lateral adjustments plate； The transverse edge length of side of the second rectangle mounting hole is in longitudinal seamed edge；Four the second rectangle mounting holes, four described second Screwed hole and four horizontal fastening screws correspond, and four horizontal fastening screws are each passed through corresponding described Second rectangle mounting hole coordinates with corresponding second screwed hole.

Accordingly, the utility model additionally provides a kind of tobacco leaf testing device for shear strength, including above-mentioned clamp assembly, also Including depression bar, lifting seat, pressure sensor and base.

Wherein, the top of the pressure sensor is connected with the lifting seat, the bottom of the pressure sensor with it is described The top connection of fixture connecting seat；The top of the depression bar and the bottom of the depression bar fixture are detachably connected；The base with The tobacco leaf seat connection.

Further, the tobacco leaf testing device for shear strength also includes lock screw；The mounting groove includes first Cell wall and the second cell wall, and first cell wall is oppositely arranged with second cell wall；Offered at least on first cell wall Two third through-holes, at least two the 4th screwed holes are also offered on second cell wall；The afterbody of the depression bar offer to Few two fourth holes；The third through-hole, the fourth hole, the 4th screwed hole and homogeneous a pair of the lock screw Should；The lock screw passes through the corresponding third through-hole and the fourth hole, matches somebody with somebody with corresponding 4th screwed hole Close.

Compared with prior art, the utility model has the advantage of：

Clamp assembly provided by the utility model, analyze its structure and understand：Above-mentioned clamp assembly mainly by fixture connecting seat, Depression bar fixed seat and tobacco clamp composition；Wherein, the bottom of depression bar fixed seat offers mounting groove of the opening towards tobacco leaf seat, cigarette Leaf fixture includes tobacco leaf seat and at least two groups of positioning components, offered at the top of tobacco leaf seat one longitudinally through longitudinal direction it is recessed Groove.

The specific connected mode and position relationship for analyzing said structure are understood：The top of fixture connecting seat and pressure sensor Bottom connection, bottom is connected with the top of depression bar fixed seat；The afterbody of depression bar is located in the mounting groove of tobacco leaf seat, and depression bar with The cell wall of mounting groove is detachably connected；Tobacco leaf seat is connected with the base of tobacco leaf testing device for shear strength, and two groups of positioning components are equal It is connected with tobacco leaf seat；The head of longitudinal fluting face depression bar.

It will be apparent that the pressure from tobacco leaf that depression bar receives can be delivered on fixture connecting seat by depression bar fixed seat, and Fixture connecting seat again can act on the pressure from depression bar fixed seat on pressure sensor, to enable pressure sensor The pressure value born of tobacco leaf is obtained, and then, obtain the shear strength of tobacco leaf.

Because the connection between the cell wall of the mounting groove on depression bar and depression bar fixed seat is is detachably connected, therefore depression bar can be When needing to change, easily disassembled from depression bar fixed seat；Meanwhile because the afterbody of depression bar is located in mounting groove, and And the two sides of depression bar are bonded setting with the both sides cell wall of mounting groove respectively so that the position of depression bar can also be mounted the both sides of groove Cell wall is limited, and ensure that being relatively fixed between depression bar and mounting groove, prevents depression bar position sideslip.

Accordingly, tobacco leaf seat is connected with the base of tobacco leaf testing device for shear strength, and will be treated using positioning component The both ends for surveying tobacco leaf are fixed on tobacco leaf seat, can carry out shearing force testing to the part between the both ends of tobacco leaf to be measured.Together When, in order to ensure the degree of accuracy of test, offered at the top of tobacco leaf seat longitudinally through longitudinal fluting, and by longitudinal fluting just To the head of depression bar；So, after tobacco leaf to be measured is placed on tobacco leaf seat, the tobacco leaf to be measured at longitudinal fluting will be hanged Sky, and the hanging region in this part just becomes the test section of tobacco leaf to be measured；When depression bar is forced downward in the test section of tobacco leaf to be measured When, the miniature deformation (this is also why to stay to set groove) extended into groove will occur for tobacco leaf to be measured, until treating When surveying tobacco leaf can not be further continued for bearing the pressure of depression bar, tobacco leaf moment fracture to be measured.

Therefore, clamp assembly provided by the utility model, depression bar is readily replaceable, can be at any time according to needing to be changed, more It is time saving and energy saving when changing, cost will not be increased substantially；Test result is also more accurate therewith.

The utility model additionally provides a kind of tobacco leaf testing device for shear strength, its mainly by above-mentioned clamp assembly, depression bar, Lifting seat, pressure sensor and base composition；The top of pressure sensor is connected with lifting seat, bottom and the top of fixture connecting seat Portion connects；The top of depression bar and the bottom of depression bar fixture are detachably connected；Base is connected with tobacco leaf seat.

Obviously, tobacco leaf testing device for shear strength provided by the utility model has all advantages of above-mentioned clamp assembly, Depression bar is readily replaceable, can be time saving and energy saving during replacing at any time according to needing be changed, and will not increase cost, test result substantially It is more accurate.

Brief description of the drawings

, below will be right in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art The required accompanying drawing used is briefly described in embodiment or description of the prior art, it should be apparent that, describe below In accompanying drawing be some embodiments of the present utility model, for those of ordinary skill in the art, do not paying creativeness On the premise of work, other accompanying drawings can also be obtained according to these accompanying drawings.

Fig. 1 is the dimensional structure diagram for the tobacco leaf testing device for shear strength that the utility model embodiment provides；

Fig. 2 is the dimensional structure diagram for the clamp assembly that the utility model embodiment provides；

Fig. 3 is the forward sight structural representation for the clamp assembly that the utility model embodiment provides；

Fig. 4 is fixture connecting seat and the assembling structure of depression bar fixed seat in the clamp assembly that the utility model embodiment provides Schematic diagram；

Fig. 5 is the dimensional structure diagram of the tobacco clamp in the clamp assembly that the utility model embodiment provides；

Fig. 6 is Fig. 5 configuration schematic diagram；

Fig. 7 is the dimensional structure diagram of tobacco leaf seat in the clamp assembly that the utility model embodiment provides.

Icon：1- fixture connecting seats；2- depression bar fixed seats；21- mounting grooves；The cell walls of 211- first；The grooves of 212- second Wall；213- lock screws；3- tobacco clamps；31- tobacco leaf seats；311- longitudinal flutings；312- transverse concave grooves；313- planes Portion；314- inclined plane parts；315- circular grooves；32- positioning components；321- pressing plates；322- location-plates；323- compresses spiral shell Bolt；324- bearing pins；325- back-moving springs；4- fixed seats；41- longitudinally adjust plates；The longitudinally secured screws of 411-；412- One rectangle mounting hole；42- lateral adjustments plates；421- transverse direction fastening screws；422- the second rectangle mounting holes；423- centers lead to Hole；5- depression bars；6- pressure sensors；7- bases；8- lifting seats；9- tobacco leaves to be measured.

Embodiment

The technical solution of the utility model is clearly and completely described below in conjunction with accompanying drawing, it is clear that described Embodiment is the utility model part of the embodiment, rather than whole embodiments.Based on the embodiment in the utility model, sheet The every other embodiment that field those of ordinary skill is obtained under the premise of creative work is not made, belongs to this practicality Novel protected scope.

, it is necessary to explanation in description of the present utility model, term " " center ", " on ", " under ", " interior ", the finger such as " outer " The orientation or position relationship shown be based on orientation shown in the drawings or position relationship, be for only for ease of description the utility model and Simplify description, rather than the device or element of instruction or hint meaning there must be specific orientation, with specific azimuth configuration And operation, therefore it is not intended that to limitation of the present utility model.In addition, term " first ", " second ", " the 3rd " are only used for retouching Purpose is stated, and it is not intended that instruction or hint relative importance.

, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in description of the present utility model Dress ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, Ke Yishi The connection of two element internals.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this Concrete meaning in utility model.

The utility model is described in further detail below by specific examples of the implementation and with reference to accompanying drawing.

Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6 and Fig. 7, a kind of clamp assembly, including fixture are present embodiments provided Connecting seat 1, depression bar fixed seat 2 and tobacco clamp 3.

Wherein, the top of the fixture connecting seat 1 is connected with the bottom of pressure sensor 6；The bottom of the fixture connecting seat 1 Portion is connected with the top of the depression bar fixed seat 2；The bottom of the depression bar fixed seat 2 offers opening towards the tobacco leaf seat 31 Mounting groove 21；The afterbody of depression bar 5 is located in the mounting groove 21, and the both sides cell wall of the mounting groove 21 respectively with the pressure The two sides fitting of bar 5 is set；The cell wall of the depression bar 5 and the mounting groove 21 is detachably connected.

The tobacco clamp 3 includes tobacco leaf seat 31 and at least two groups of positioning components 32；The tobacco leaf seat 31 is sheared with tobacco leaf The base 7 of strength testing device is connected, and positioning component 32 described in two groups is connected with the tobacco leaf seat 31；The tobacco leaf seat 31 is used In placing tobacco leaf 9 to be measured, positioning component 32 described in two groups is respectively used to fasten the tobacco leaf to be measured 9；The top of the tobacco leaf seat 31 Portion offer one longitudinally through longitudinal fluting 311, and the head of depression bar 5 described in the face of the longitudinal fluting 311.

It will be apparent that the pressure from tobacco leaf that depression bar 5 receives can be delivered on fixture connecting seat 1 by depression bar fixed seat 2, And fixture connecting seat 1 can act on the pressure from depression bar fixed seat 2 on pressure sensor 6, to cause pressure sensing Device 6 can obtain the pressure value that tobacco leaf is born, and then, obtain the shear strength of tobacco leaf.

Because of the connection between the cell wall of the mounting groove 21 on depression bar 5 and depression bar fixed seat 2 to be detachably connected, therefore depression bar 5 It can easily be disassembled when needing to change from depression bar fixed seat 2；Meanwhile because the afterbody of depression bar 5 is located at installation In groove 21, and the two sides of depression bar 5 are bonded setting with the both sides cell wall of mounting groove 21 respectively so that the position of depression bar 5 can also The both sides cell wall for being mounted groove 21 is limited, and be ensure that being relatively fixed between depression bar 5 and mounting groove 21, is prevented the position of depression bar 5 Sideslip.

Accordingly, tobacco leaf seat 31 is connected with the base 7 of tobacco leaf testing device for shear strength, and utilizes positioning component 32 The both ends of tobacco leaf 9 to be measured are fixed on tobacco leaf seat 31, so that shearing force can be carried out to the part between the both ends of tobacco leaf 9 to be measured Test.Meanwhile in order to ensure test the degree of accuracy, offered at the top of tobacco leaf seat 31 longitudinally through longitudinal fluting 311, and By the head of the face depression bar 5 of longitudinal fluting 311；So, after tobacco leaf 9 to be measured is placed on tobacco leaf seat 31, positioned at longitudinal fluting Tobacco leaf to be measured 9 at 311 will be suspended, and the hanging region in this part just becomes the test section of tobacco leaf 9 to be measured；When depression bar 5 When being forced downward in the test section of tobacco leaf 9 to be measured, (this is also for miniature deformation that tobacco leaf 9 to be measured will occur to extend into groove Why stay and set groove), when tobacco leaf 9 to be measured can not be further continued for bearing the pressure of depression bar 5, the moment of tobacco leaf 9 to be measured Fracture.

Therefore, the clamp assembly that the present embodiment provides, depression bar 5 is readily replaceable, can be changed at any time according to needing to be changed When it is time saving and energy saving, cost will not be increased substantially；Test result is also more accurate therewith.

The concrete structure and technique effect of technical scheme about the present embodiment are as follows：

Preferably, the transverse concave groove 312 extended transversely through is offered at the top of tobacco leaf seat 31, in this manner it is possible to will be to be measured Tobacco leaf 9 is placed into transverse concave groove 312；In addition, transverse concave groove 312 and longitudinal fluting 311 are vertically arranged, and by transverse concave groove 312 groove depth is set smaller than the groove depth of longitudinal fluting 311, after make it that tobacco leaf 9 to be measured is put into transverse concave groove 312, place Test section at longitudinal fluting 311 still can be vacantly arranged on longitudinal fluting 311；Meanwhile by transverse concave groove 312 Groove width is arranged to identical with the width of tobacco leaf 9 to be measured, to enable tobacco leaf 9 to be measured to be installed in parallel in transverse concave groove 312, and The test section of tobacco leaf 9 to be measured is formed rectangular shape, further ensure the accuracy of test.

Comprehensive each factor, the top surface of tobacco leaf seat 31 is arranged to by the planar portions 313 in centre and is symmetricly set on The inclined plane part 314 of the both sides of planar portions 313 is formed, and planar portions 313 are arranged into rectangular shape, and inclined plane part 314 is by centre to two Lateral bottom extension；Longitudinal fluting 311 is opened in planar portions 313.Transverse concave groove 312 is opened in planar portions 313, and And tobacco leaf 9 to be measured is parallel to each other in planar portions 313 and the part of the intersection of inclined plane part 314；And then cigarette to be measured can make it that Leaf 9 in tensioning, can will not both cause two groups of positioning components 32 of depression bar 5 and fixed tobacco leaf 9 to be measured to interfere, and also reduce The risk that tobacco leaf is broken in the intersection of planar portions 313 and inclined plane part 314.In addition, the both sides cell wall of longitudinal fluting 311 is also equal Parallel to the longitudinal centre line of rectangle, to prevent from colliding between depression bar 5 and cell wall, depression bar 5 is damaged.

Further, the angle between two inclined plane parts 314 and planar portions 313 is disposed as 150 degree, to avoid The requirement that two groups of positioning components 32 of depression bar 5 and fixed tobacco leaf 9 to be measured interfere, and reduce tobacco leaf planar portions 313 with The requirement of the risk of the intersection fracture of inclined plane part 314, can more evenly be handled, further improve the accurate of test Degree.

Preferably, smooth surface transition will be arranged between planar portions 313 and two inclined plane parts 314, further to reduce Risk of the tobacco leaf 9 to be measured in the intersection fracture of planar portions 313 and two inclined plane parts 314.

Pressing plate 321, location-plate 322, hold-down bolt 323 and extremely are provided with the concrete structure of every group of positioning component 32 Few two bearing pins 324.Wherein, pressing plate 321 is made up of longitudinal briquetting in bottom and the cross-brace in top, and pressing plate The 321 T-shaped structure of entirety, longitudinal briquetting is equivalent to the lower end vertical section of T-shaped, and cross-brace is then upper equivalent to T-shaped Hold lateral part；For the ease of description, the part that cross-brace is in T-shaped upper end lateral part both sides is referred to as flank, in order to So that pressing plate 321, in stress, two flanks of cross-brace can tend to balance, two flanks are arranged with respect to longitudinal direction Briquetting is symmetrical arranged；Longitudinal briquetting is therefore the longitudinal direction in order to carry out the fixed structure of pressing to the briquetting in transverse concave groove 312 Briquetting should be able to enter in transverse concave groove 312, and therefore, the width of longitudinal briquetting should be less than the width of transverse concave groove 312.

Location-plate 322 is in order to be positioned to pressing plate 321, to enable pressing plate 321 to be pressed together on tobacco leaf 9 to be measured Structure, therefore, the top surface of cross-brace is bonded setting with the bottom surface of location-plate 322.In order to realize pressing plate 321 and location-plate 322 in transverse direction relative position fixation, it is logical to offer at least one first respectively on two flanks of cross-brace Hole, and at least two second through holes are offered on location-plate 322, first through hole, the second through hole and homogeneous a pair of bearing pin 324 Should, bearing pin 324 is connected after sequentially passing through corresponding second through hole and first through hole with tobacco leaf seat 31.For the ease of pressing plate 321 Regulation, the first screwed hole coordinated with hold-down bolt 323 is further opened with location-plate 322, it is fixed that the first screwed hole is arranged on The center of position plate 322, and abutted after hold-down bolt 323 is passed through into the first screwed hole with the top of cross-brace；Because of bearing pin 324 presence causes the distance between fixed plate and the top surface of tobacco leaf seat 31 to exceed a certain fixed value, and in hold-down bolt In the presence of 323, the distance between pressing plate 321 and fixed plate also can obtain adjustable fixation, and then, it is right to realize pressing plate 321 The pressing effect of tobacco leaf 9 to be measured, can ensure that the position of pressing plate 321 is motionless in test process, that is, ensureing test accuracy While, prevent in depression bar (1200mm/min) motion at a high speed, the security of experiment；When needing to adjust pressing plate 321, Bolt 323 can directly be rotatably compressed to adjust the distance between pressing plate 321 and fixed plate, and coordinate regulation pressing plate 321 manually The distance between tobacco leaf seat 31, and then realize the installation and removal to tobacco leaf 9 to be measured, i.e., need not dismantle bearing pin 324 can root According to needing to install or remove tobacco leaf 9 to be measured.

Preferably, be additionally provided with least two back-moving springs 325 in every group of positioning component 32, and back-moving spring 325 with Bearing pin 324 corresponds, and after bearing pin 324 passes through corresponding second through hole and first through hole, also needs guiding through back-moving spring 325, so It is connected afterwards with tobacco leaf seat 31；So, it is possible to alleviate back-moving spring 325 and deformed during much time using or sideslip Situation, extend its service life.In addition, offered at the top of tobacco leaf seat 31 circular correspondingly with back-moving spring 325 Groove 315, and the both ends of back-moving spring 325 are connected with the bottom of the flank of cross-brace and the bottom land of circular groove 315 respectively Connect, to cause back-moving spring 325 to can be placed in corresponding circular groove 315, with further protection back-moving spring 325. When needing that tobacco leaf 9 to be measured is installed or removed, as long as rotatably compressing bolt 323, spring can is voluntarily with dynamic pressure plate 321 Move up and down, it is more convenient without artificial regulation pressing plate 321 manually.

For the ease of adjusting the position of tobacco leaf seat 31, to enable longitudinal fluting 311 to be in face state with depression bar 5, Ensure the degree of accuracy of test, fixed seat 4, longitudinally adjust plate 41, longitudinally secured will be additionally provided with the concrete structure of clamp assembly Screw 411, lateral adjustments plate 42 and four horizontal fastening screws 421.Wherein, fixed seat 4 is connected with base 7, to fix itself Position；Meanwhile fixed seat 4 is also bonded setting with the bottom of longitudinally adjust plate 41, the 3rd screwed hole is opened up in fixed seat 4, and The first rectangle mounting hole 412, and longitudinal seamed edge of the first rectangle mounting hole 412 are offered in the center of longitudinally adjust plate 41 Be longer than horizontal seamed edge, using longitudinally secured screw 411 pass through the first rectangle mounting hole 412 after with the 3rd screwed hole coordinate, so Longitudinally secured screw 411 can relatively move in a longitudinal direction along the first rectangle mounting hole 412；When needing to adjust tobacco leaf seat 31 Lengthwise position when, longitudinally secured screw 411 can be loosened, it is possible to move longitudinally adjust plate 41 in a longitudinal direction until cigarette Trichidium 31 reaches the target location on longitudinal direction, tightens the longitudinally secured can of screw 411 by the position of longitudinally adjust plate 41 It is fixed, it is very convenient.In order that four the second screwed holes must be also evenly arranged with the peripheral position of longitudinally adjust plate 41, And four the second rectangle mounting holes 422 are evenly arranged with the peripheral position of lateral adjustments plate 42 accordingly, and the second rectangle is pacified The transverse edge length of side in hole 422 is filled in longitudinal seamed edge, is passed through using horizontal fastening screw 421 after the second rectangle mounting hole 422 with the Two screwed holes coordinate, so horizontal fastening screw 421 can relatively move in a lateral direction along the second rectangle mounting hole 422； When needing to adjust the lateral attitude of tobacco leaf seat 31, horizontal fastening screw 421 can be loosened, it is possible to move in a lateral direction Lateral adjustments plate 42 reaches the target location on horizontal direction until tobacco leaf seat 31, and tightening the horizontal can of fastening screw 421 will The position of lateral adjustments plate 42 is fixed, very convenient.In order that obtain lateral adjustments plate 42 and the energy of longitudinally adjust plate 41 mutually Fitting, offers central through hole 423, can accommodate the head of longitudinally adjust screw on lateral adjustments plate 42.

Accordingly, referring to Fig. 1, the present embodiment additionally provides a kind of tobacco leaf testing device for shear strength, and it includes above-mentioned folder Has component (concrete structure of the clamp assembly no longer repeats one by one), also it also includes depression bar 5, lifting seat 8, pressure sensing simultaneously Device 6 and base 7；Wherein, the top of the pressure sensor 6 is connected with the lifting seat 8, the bottom of the pressure sensor 6 It is connected with the top of the fixture connecting seat 1；The top of the depression bar 5 and the bottom of the fixture of depression bar 5 are detachably connected；Institute Base 7 is stated to be connected with the tobacco leaf seat 31.

Obviously, the tobacco leaf testing device for shear strength that the present embodiment provides has all advantages of above-mentioned clamp assembly, pressure Bar 5 is readily replaceable, can be time saving and energy saving during replacing at any time according to needing be changed, and will not increase cost substantially, test result is more It is accurate to add.

For the ease of description, two relative cell walls of mounting groove 21 are defined as the first cell wall 211 and the second cell wall 212, and at least two third through-holes are opened up on the first cell wall 211, set on the second cell wall 212 and a pair of third through-hole 1 The 4th screwed hole answered；Meanwhile it is further opened with and the one-to-one fourth hole of third through-hole in the afterbody of depression bar 5；Locking screw Silk 213 corresponds with third through-hole, fourth hole and the 4th screwed hole respectively, and lock screw 213 passes through corresponding threeway Coordinate behind hole and fourth hole with corresponding 4th screwed hole.So, it is achieved that consolidating between depression bar 5 and depression bar fixed seat 2 It is fixed, it is this to adopt the mode being screwed, the stability of connection can be ensured, it is also detachable, it is highly suitable for consolidating to depression bar 5 It is fixed.

In summary, the utility model embodiment discloses a kind of clamp assembly and tobacco leaf testing device for shear strength, its Overcome many technological deficiencies of traditional tobacco leaf testing device for shear strength.This is applicable the clamp assembly of new embodiment offer And tobacco leaf testing device for shear strength, depression bar is readily replaceable, can be at any time according to needing be changed, time saving and energy saving, base during replacing Originally cost will not be increased；Test result is also more accurate therewith.

Finally it should be noted that：Various embodiments above is only to illustrate the technical solution of the utility model, rather than it is limited System；Although the utility model is described in detail with reference to foregoing embodiments, one of ordinary skill in the art should Understand：It can still modify to the technical scheme described in foregoing embodiments, either to which part or whole Technical characteristic carries out equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from this practicality newly The scope of each embodiment technical scheme of type.

Claims (10)

1. a kind of clamp assembly, it is characterised in that including fixture connecting seat, depression bar fixed seat and tobacco clamp；

Wherein, the top of the fixture connecting seat and the bottom of pressure sensor connect；The bottom of the fixture connecting seat and institute State the top connection of depression bar fixed seat；The bottom of the depression bar fixed seat offers mounting groove of the opening towards the tobacco leaf seat； The afterbody of depression bar is located in the mounting groove, and the both sides cell wall of the mounting groove is bonded with the two sides of the depression bar sets respectively Put；The cell wall of the depression bar and the mounting groove is detachably connected；

The tobacco clamp includes tobacco leaf seat and at least two groups of positioning components；The tobacco leaf seat and tobacco leaf testing device for shear strength Base connection, positioning component described in two groups is connected with the tobacco leaf seat；The tobacco leaf seat is used to place tobacco leaf to be measured, two groups The positioning component is respectively used to fasten the tobacco leaf to be measured；Offered at the top of the tobacco leaf seat one longitudinally through longitudinal direction Groove, and the head of depression bar described in the longitudinal fluting face.

2. clamp assembly according to claim 1, it is characterised in that be further opened with extending transversely through at the top of the tobacco leaf seat Transverse concave groove, the transverse concave groove is vertically arranged with the longitudinal fluting, and the groove depth of the transverse concave groove be less than it is described vertical To the groove depth of groove；The tobacco leaf to be measured is placed in the transverse concave groove, and the groove width of the transverse concave groove with it is described to be measured The width of tobacco leaf is identical.

3. clamp assembly according to claim 2, it is characterised in that the top surface of the tobacco leaf seat includes planar portions and two Inclined plane part, and the planar portions are rectangular shape；Two inclined plane parts are symmetricly set on the both sides of the planar portions, and two The inclined plane part extends by centre to two lateral bottoms；The longitudinal fluting is opened in the planar portions, and the longitudinal direction Longitudinal centre line of the both sides cell wall of groove each parallel to the rectangle.

4. clamp assembly according to claim 3, it is characterised in that two inclined plane parts are between the planar portions Angle be 150 degree.

5. clamp assembly according to claim 4, it is characterised in that be between the planar portions and two inclined plane parts Smooth surface transition.

6. according to the clamp assembly described in claim any one of 2-5, it is characterised in that positioning component described in every group includes Pressing plate, location-plate, hold-down bolt and at least two bearing pins；The pressing plate includes being in longitudinal briquetting of bottom and in top Cross-brace, and the pressing plate is T-shaped structure；The relatively described longitudinal briquetting of two flanks of the cross-brace is symmetrical arranged； Longitudinal briquetting is oppositely arranged with the transverse concave groove, and the width of longitudinal briquetting is less than the groove of the transverse concave groove It is wide；The top surface of the cross-brace is bonded setting with the bottom surface of the location-plate；

At least one first through hole is offered respectively on two flanks of the cross-brace, and first is offered on the location-plate Screwed hole and at least two second through holes；The first through hole, second through hole and the bearing pin correspond；The pin Axle sequentially passes through corresponding second through hole and the first through hole, is connected with the tobacco leaf seat；First screwed hole is set Put and coordinate in the center of the location-plate, the hold-down bolt with first screwed hole, the hold-down bolt passes through institute The top that the first screwed hole is stated with the cross-brace abuts.

7. clamp assembly according to claim 6, it is characterised in that positioning component described in every group also includes at least two Back-moving spring；At least four circular grooves are offered at the top of the tobacco leaf seat；The both ends of the back-moving spring respectively with it is described The bottom of the flank of cross-brace connects with the bottom land of the circular groove；The back-moving spring corresponds with the bearing pin； The bearing pin sequentially passes through the inside of corresponding second through hole, the first through hole and the back-moving spring, with the cigarette Trichidium connects.

8. according to the clamp assembly described in claim any one of 2-5, it is characterised in that also including fixed seat, longitudinally adjust Plate, longitudinally secured screw, lateral adjustments plate and four horizontal fastening screws；The fixed seat is connected with the base, described solid Bottom of the reservation also with the longitudinally adjust plate is bonded setting；The top of the longitudinally adjust plate and the bottom of the lateral adjustments plate Portion is bonded；The top of the lateral adjustments plate is connected with the bottom of the tobacco leaf seat；

The first rectangle mounting hole and four the second screwed holes, the first rectangle mounting hole site are offered on the longitudinally adjust plate In the center of the longitudinally adjust plate, four second screwed holes are uniformly arranged on the edge of the longitudinally adjust plate；It is described Longitudinal seamed edge of first rectangle mounting hole is longer than horizontal seamed edge；The 3rd screwed hole is offered in the fixed seat, the longitudinal direction is tight Gu screw coordinates through the first rectangle mounting hole and the 3rd screwed hole；

Central through hole and four the second rectangle mounting holes are offered on the lateral adjustments plate；The head of the longitudinally secured screw In the central through hole, four the second rectangle mounting holes are uniformly arranged on the edge of the lateral adjustments plate；It is described The transverse edge length of side of second rectangle mounting hole is in longitudinal seamed edge；Four the second rectangle mounting holes, four second screw threads Hole and four horizontal fastening screws correspond, and four horizontal fastening screws are each passed through corresponding described second Rectangle mounting hole coordinates with corresponding second screwed hole.

9. a kind of tobacco leaf testing device for shear strength, it is characterised in that including the clamp assembly as described in claim 1-8, go back Including depression bar, lifting seat, pressure sensor and base；

Wherein, the top of the pressure sensor is connected with the lifting seat, the bottom of the pressure sensor and the fixture The top connection of connecting seat；The top of the depression bar and the bottom of the depression bar fixture are detachably connected；The base with it is described Tobacco leaf seat connects.

10. tobacco leaf testing device for shear strength according to claim 9, it is characterised in that also including lock screw；It is described Mounting groove includes the first cell wall and the second cell wall, and first cell wall is oppositely arranged with second cell wall；Described first At least two third through-holes are offered on cell wall, at least two the 4th screwed holes are also offered on second cell wall；The pressure The afterbody of bar offers at least two fourth holes；The third through-hole, the fourth hole, the 4th screwed hole and described Lock screw corresponds；The lock screw passes through the corresponding third through-hole and the fourth hole, and corresponding 4th screwed hole coordinates.