CN213456482U

CN213456482U - Shearing force detection test block

Info

Publication number: CN213456482U
Application number: CN202022512781.6U
Authority: CN
Inventors: 阳秋红; 刘旭东
Original assignee: Beijing Hangba Chengcheng Testing Technology Co ltd
Current assignee: Beijing Hangba Chengcheng Testing Technology Co ltd
Priority date: 2020-11-03
Filing date: 2020-11-03
Publication date: 2021-06-15
Anticipated expiration: 2030-11-03

Abstract

The application discloses shearing force detection test block relates to a detection test equipment's technical field, it includes the support frame and is used for treating the lower briquetting that detects the sample and exert pressure, the briquetting top has set firmly the connector down, curved breach has been seted up to lower briquetting bottom, the support frame includes that bottom plate and two slide connect the backup pad on the bottom plate, the spliced eye has been seted up respectively on the relative both ends face of two backup pads, two spliced eyes are corresponding, be provided with on the bottom plate and be used for driving two backup pads synchronous relative movement will wait to detect the sample and compress tightly the power component between two relative both ends faces of spliced eye. The test device has the advantages that the stability of the test sample to be detected is improved, the occurrence of the rotating condition of the test sample to be detected is reduced, and the accuracy of the test result is improved.

Description

Shearing force detection test block

Technical Field

The application relates to the technical field of detection test equipment, in particular to a shearing force detection test block.

Background

In the mechanical property tests of stretching, compressing, bending, shearing, tearing and the like of various materials, the universal tester is widely applied, the shearing auxiliary tool is an indispensable part in the shearing force detection, and the auxiliary tool is used for fixing a sample to be detected so as to detect the shearing force of the sample.

The Chinese utility model patent with the publication number of CN206960262U discloses a shear force detection test block, which comprises a support seat and a lower press block, wherein the support seat comprises a first support plate and a second support plate, through holes are arranged at the positions of four corners of the first support plate, a fixing bolt is rotationally connected in the through holes, the second support plate is in threaded connection with the tail end of the fixing bolt, and a limit cylinder which is abutted against the first support plate and the second support plate is sleeved on the fixing bolt; the lower pressing block is inserted in a gap between the first supporting plate and the second supporting plate, a plurality of inserting holes are formed in the middle of the lower pressing block along the height direction of the lower pressing block, and the diameter of each inserting hole is gradually increased from top to bottom.

Although the prior art scheme among the above-mentioned has simplified the dismouting work that the test block assisted the utensil, but at the shearing force detection test block in-service use in-process, will wait to detect the sample and insert and test in the through-hole, the stability of waiting to detect the sample is lower, if wait to detect the sample atress inhomogeneous, leads to waiting to detect the sample condition that the rotation appears easily, influences the accuracy of test result.

SUMMERY OF THE UTILITY MODEL

In order to improve the accuracy of test result, this application provides a shearing force detection test block.

The application provides a shearing force detection test block adopts following technical scheme:

the utility model provides a shearing force detection test block, includes the support frame and is used for treating the lower briquetting that detects the sample and exert pressure, the briquetting top has set firmly the connector down, curved breach has been seted up to the briquetting bottom down, the support frame includes that bottom plate and two slide and connect the backup pad on the bottom plate, two the spliced eye has been seted up respectively on the relative both ends face of backup pad, two the spliced eye is corresponding, be provided with on the bottom plate and be used for driving two backup pad synchronous relative movement and compress tightly the power component between two relative both ends faces of spliced eye with treating the sample.

Through adopting above-mentioned technical scheme, at first on being fixed in universal testing machine with briquetting down, be used for placing the base of assistive device in being fixed in universal testing machine with the bottom plate in the support frame, move back to back through two backup pads of power component drive, the messenger waits to detect the sample and can place between two backup pads, will wait to detect the sample and place between two backup pads and will wait to detect the one end of sample and insert in one of them spliced eye, will wait to detect the sample through two backup pad relative movement of power component drive and compress tightly between two relative terminal surfaces of spliced eye, the stability of waiting to detect the sample has been increased, the emergence of waiting to detect the sample pivoted condition has been reduced, and then the accuracy of test result has been improved.

Preferably, the power component is including setting firmly the fixed block on the bottom plate, it is connected with two connecting rods, two to slide along the distribution direction of two backup pads on the fixed block the connecting rod respectively with two backup pad fixed connection, rotate through the pivot on the fixed block and be connected with the rotation piece, the both ends of rotating the piece outwards extend respectively have linkage block, two set up respectively on the connecting rod with the corresponding linkage groove of two linkage blocks, two the both ends that link block carried on the back mutually insert respectively in two linkage grooves, the connecting rod can move under the effect of linkage block, be provided with the driving piece that is used for driving one of them connecting rod to remove on the fixed block, two the connecting rod can be under the effect of driving piece synchronous relative or back on the back removal.

By adopting the technical scheme, one of the connecting rods is driven to move by the driving part, and because the linkage block on the rotating part is inserted into the linkage groove on the linkage block, the rotating part is driven to rotate around the rotating shaft when the connecting rod moves, and the other linkage block on the rotating part drives the other connecting rod to move towards the direction opposite to the connecting rod connected with the driving part, so that the two connecting rods are synchronously driven.

Preferably, the driving part comprises a screw rod rotatably connected to the fixed block, the screw rod is arranged along the moving direction of the connecting rods, and the screw rod is in threaded connection with one of the connecting rods.

Through adopting above-mentioned technical scheme, rotate the screw rod, the connecting rod connected with it removes under the effect of screw rod, realizes the drive to the connecting rod.

Preferably, the screw is fixedly arranged on a limiting piece for limiting the moving range of the connecting rod.

Through adopting above-mentioned technical scheme, restricted the displacement range of connecting rod, and then prevented that connecting rod migration distance is too big to lead to the linkage piece to take off from the inner chamber in linkage groove.

Preferably, a fixing frame is fixedly arranged on the bottom plate, guide rods are fixedly arranged on the fixing frame along the moving direction of the supporting plates, two connecting sliding blocks are fixedly arranged on the supporting plates respectively, and the connecting sliding blocks are sleeved on the outer sides of the guide rods and connected with the guide rods in a sliding mode.

Through adopting above-mentioned technical scheme, realized the direction when removing two backup pads, increased the stability when two backup pads remove.

Preferably, a sliding groove is formed in the bottom plate, a sliding block corresponding to the sliding groove is fixedly arranged on the supporting plate, the sliding block is connected in the sliding groove in a sliding mode, and a locking piece used for locking the sliding block in the sliding groove is arranged on the sliding block.

Through adopting above-mentioned technical scheme, the cooperation of groove and the sliding block that slides has realized being connected that slides between backup pad and the bottom plate, and the staff of being convenient for of retaining member sets up locks the backup pad on the bottom plate, has increased the stability of backup pad when being in fixed state.

Preferably, the cross sectional shape of groove that slides is the type of falling T, the retaining member includes the locking bolt of threaded connection on the sliding block, the locking bolt bottom butt is on the diapire of groove that slides.

Through adopting above-mentioned technical scheme, screw up the locking bolt, realize the locking between sliding block and the groove that slides, simple structure, the operation of being convenient for.

Preferably, a magnet used for being connected with the universal testing machine is fixedly arranged on the bottom plate.

Through adopting above-mentioned technical scheme, the bottom plate of being convenient for is connected with universal tester.

In summary, the present application includes at least one of the following beneficial technical effects:

1. firstly, a lower pressing block is fixed on a universal testing machine, a bottom plate in a supporting frame is fixed on a base used for placing an auxiliary tool in the universal testing machine, two supporting plates are driven by a power assembly to move back and forth, a sample to be detected can be placed between the two supporting plates, the sample to be detected is placed between the two supporting plates, one end of the sample to be detected is inserted into one of insertion holes, the two supporting plates are driven by the power assembly to move relatively, the sample to be detected is pressed between two opposite end faces of the two insertion holes, the stability of the sample to be detected is increased, the rotation of the sample to be detected is reduced, and the accuracy of a test result is improved;

2. one connecting rod is driven to move by the driving part, and because the linkage block on the rotating part is inserted into the linkage groove on the linkage block, the rotating part is driven to rotate around the rotating shaft when the connecting rod moves, and the other linkage block on the rotating part drives the other connecting rod to move in the direction opposite to the connecting rod connected with the driving part, so that the two connecting rods are driven synchronously;

3. the screw rod is rotated, and the connecting rod connected with the screw rod moves under the action of the screw rod, so that the connecting rod is driven.

Drawings

Fig. 1 is a schematic view of the overall structure of the present application.

Fig. 2 is a schematic partial cross-sectional view of the structure of the power assembly showing the maximum distance between the two support plates in this application.

Fig. 3 is a schematic partial cross-sectional view of the structure of the power assembly showing the two support plates compressing the sample to be tested.

Fig. 4 is a schematic structural diagram showing the overall structure of the fixing frame, the guide rod and the connecting slider structure in the present application.

Description of reference numerals: 1. pressing the block; 11. a connector; 12. a notch; 2. a base plate; 21. a magnet; 22. a sliding groove; 3. a support plate; 31. inserting holes; 311. a rubber pad; 32. a sliding block; 321. locking the bolt; 33. connecting the sliding block; 4. a power assembly; 41. a fixed block; 411. an upper connecting plate; 412. a lower connecting plate; 42. an upper connecting rod; 421. an upper connecting block; 422. a second connecting lug; 43. a lower connecting rod; 431. a lower connecting block; 44. a turntable; 441. a strut; 442. a linkage block; 45. a linkage groove; 46. a first connecting lug; 47. a screw; 471. a limiting sheet; 5. a vertical rod; 6. a guide rod.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses a shearing force detection test block.

Referring to fig. 1, including the support frame and being used for treating the lower briquetting 1 that detects the sample and exert pressure, the support frame is including being arranged in with universal tester be used for placing the bottom plate 2 that the base of assistive device links to each other, bottom plate 2 sets up to the rectangular plate body, four extreme angle departments of 2 lower surfaces of bottom plate are fixedly connected with magnet 21 respectively, bottom plate 2 passes through magnet 21 fixed connection and is used for placing the base of assistive device in universal tester on.

Lower briquetting 1 top fixedly connected with is used for the connector 11 of being connected with universal tester, and connector 11 compresses tightly through the cooperation of bolt and nut to be connected on universal tester, and curved breach 12 has been seted up to lower briquetting 1 bottom, and the axis direction of breach 12 sets up along the length direction of bottom plate 2.

Two supporting plates 3 are arranged on the upper surface of the bottom plate 2 at intervals, the supporting plates 3 are vertically arranged, inserting holes 31 are formed in two opposite end faces of the two supporting plates 3 respectively, the inserting holes 31 are round holes, the axes of the two inserting holes 31 are overlapped, and rubber pads 311 are fixedly connected to the two opposite end faces of the two inserting holes 31 in a splicing mode respectively. When the shear force test is performed on the sample to be detected, two ends of the sample to be detected respectively abut against two opposite end faces of the two rubber pads 311.

The backup pad 3 slides and connects on bottom plate 2, has seted up sliding groove 22 on bottom plate 2, and sliding groove 22 sets up and runs through 2 length direction's of bottom plate both sides along 2 length direction of bottom plate, and sliding groove 22's cross sectional shape is the type of falling T. The support plate 3 is fixedly connected with a sliding block 32 corresponding to the sliding groove 22, and the sliding block 32 is connected with the sliding groove 22 in a sliding manner, so that the sliding connection between the support plate 3 and the bottom plate 2 is realized. Threaded connection has along the vertical locking bolt 321 that sets up on the sliding block 32, and locking bolt 321 bottom butt is on the diapire of sliding groove 22, screws up locking bolt 321, locks sliding block 32 in sliding groove 22, and then locks backup pad 3 on bottom plate 2.

The bottom plate 2 is provided with a power assembly 4 for driving the two supporting plates 3 to synchronously rotate in the same direction or synchronously rotate in opposite directions, and the minimum distance between the two supporting plates 3 is greater than the distance between the two side walls of the lower pressing block 1, which are back to back along the length direction of the bottom plate 2.

Referring to fig. 1 and 2, the power assembly 4 includes a fixing block 41 fixedly connected to the bottom plate 2, the fixing block 41 is located on one side of the bottom plate 2 in the width direction, the fixing block 41 is a hollow housing, two connecting rods respectively located at the upper and lower ends of the fixing block 41 are slidably connected to the inner cavity of the fixing block 41, and the two connecting rods are respectively set as an upper connecting rod 42 and a lower connecting rod 43. The upper connecting rod 42 and the lower connecting rod 43 are arranged along the length direction of the bottom plate 2, the two ends of the upper connecting rod 42, which are opposite to each other, penetrate through the side wall of the fixing block 41 respectively to stretch out of the inner cavity of the fixing block 41, and the two ends of the upper connecting rod 42, which are opposite to each other, and the lower connecting rod 43 are fixedly connected with the two supporting plates 3 respectively through the upper connecting block 421 and the lower connecting block 431.

The fixed block 41 is connected with an upper connecting plate 411 fixedly connected on the side wall of the inner cavity at one side of the upper connecting rod 42, the upper surface of the upper connecting rod 42 is contacted with the upper surface of the inner cavity of the fixed block 41, and the lower surface of the upper connecting rod 42 is contacted with the upper surface of the upper connecting plate 411. The side wall of the inner cavity of one side of the fixed block 41 connected with the lower connecting rod 43 is fixedly connected with a lower connecting plate 412, the lower surface of the lower connecting rod 43 is contacted with the lower surface of the inner cavity of the fixed block 41, and the upper surface of the lower connecting rod 43 is contacted with the lower surface of the lower connecting plate 412.

Referring to fig. 2 and 3, a circular turntable 44 is rotatably connected to the inner cavity of the fixed block 41 through a rotating shaft, the rotating shaft is disposed along the width direction of the bottom plate 2, and the rotating shaft is located in the middle of the inner cavity of the fixed block 41. Supporting rods 441 respectively extend outwards along the radial direction of the outer peripheral surface of the rotating disc 44, and two opposite ends of the two supporting rods 441 are respectively and fixedly connected with a linkage block 442. Two opposite surfaces of the upper connecting rod 42 and the lower connecting rod 43 are respectively provided with a linkage groove 45 corresponding to the two linkage blocks 442, and the linkage groove 45 is a square groove body. Two ends of the two linkage blocks 442, which are opposite to each other, are respectively arranged in a circular arc shape, two ends of the two linkage blocks 442, which are opposite to each other, are respectively inserted into the two linkage grooves 45, the axial direction of the linkage blocks 442 is parallel to the axial direction of the rotating shaft, two sides of the outer peripheral surface of the linkage blocks 442 are respectively tangent to two side walls of the linkage grooves 45, which are opposite to each other in the length direction of the connecting rod, and the linkage blocks 442 are always located in the linkage grooves 45 in the rotating process of the rotating shaft.

Referring to fig. 1 and 2, a first connecting lug 46 corresponding to the upper connecting rod 42 is fixedly connected to an outer side wall of the fixing block 41, a screw 47 is rotatably connected to the first connecting lug 46, and the screw 47 is disposed along a length direction of the base plate 2. One end of the upper connecting rod 42 extending out of the inner cavity of the fixing block 41 is fixedly connected with a second connecting lug 422, and one end of the screw rod 47 back to the first connecting lug 46 passes through the second connecting lug 422 and is in threaded connection with the second connecting lug 422. The screw 47 passes through one end fixedly connected with limiting piece 471 of the second connecting support lug 422, and the limiting piece 471 limits the moving range of the upper connecting rod 42 and prevents the linkage block 442 from being separated from the linkage groove 45.

The screw 47 is rotated, the upper connecting rod 42 moves under the action of the screw 47, the linkage block 442 connected with the upper connecting rod 42 rotates under the action of the upper connecting rod 42, the rotating disc 44 rotates around the rotating shaft, and the lower connecting rod 43 moves towards the direction opposite to the upper connecting rod 42 under the action of the linkage block 442 connected with the lower connecting rod 43, so that the upper connecting rod 42 and the lower connecting rod 43 are synchronously driven.

Referring to fig. 3 and 4, a fixing frame is fixedly connected to one side of the bottom plate 2 facing away from the fixing block 41 in the width direction, and the fixing frame includes two vertical rods 5 arranged at intervals. A guide rod 6 is fixedly connected between the two vertical rods 5, and the guide rod 6 is arranged along the length direction of the bottom plate 2. Fixedly connected with link block 33 on the lateral wall of backup pad 3 orientation guide bar 6, link block 33 cover is located the guide bar 6 outside and is slided with guide bar 6 and be connected, has realized the direction when removing two backup pads 3, has increased the stability when two backup pads 3 remove.

The implementation principle of the shear force detection test block in the embodiment of the application is as follows:

fixing the lower pressing block 1 on a universal testing machine through the matching of a bolt and a nut, fixedly connecting the bottom plate 2 on a base used for placing an auxiliary tool in the universal testing machine through a magnet 21, and enabling the lower pressing block 1 to vertically correspond to the bottom plate 2;

the screw 47 is rotated, so that the upper connecting rod 42 moves towards one side back to the fixed block 41 under the action of the screw 47, the linkage block 442 connected with the upper connecting rod 42 rotates under the action of the upper connecting rod 42, the turntable 44 rotates around the rotating shaft, and the lower connecting rod 43 moves towards the direction opposite to the upper connecting rod 42 under the action of the linkage block 442 connected with the lower connecting rod 43, so that a sample to be detected can be placed between the two supporting plates 3;

to wait to detect the sample and place between two backup pads 3 and will wait to detect the one end of sample and insert in one of them spliced eye 31, the reverse rotation screw rod 47 makes two backup pads 3 rotate to relative direction, will wait to detect the sample and compress tightly between two spliced eyes 31, makes the both ends terminal surface that waits to detect the sample respectively with two rubber pads 311 butt, has increased the stability of waiting to detect the sample, has reduced the emergence of waiting to detect the sample pivoted condition, and then has improved the accuracy of test result.

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

1. The utility model provides a shearing force detection test block, includes support frame and lower briquetting (1) that is used for treating the sample application pressure that detects, briquetting (1) top has set firmly connector (11) down, curved breach (12), its characterized in that have been seted up to briquetting (1) bottom down: the support frame includes bottom plate (2) and two backup pads (3) of sliding connection on bottom plate (2), two spliced eye (31), two have been seted up respectively on the relative both ends face of backup pad (3) spliced eye (31) are corresponding, be provided with on bottom plate (2) and be used for driving two backup pads (3) synchronous relative movement and compress tightly power component (4) between the relative both ends face of two spliced eyes (31) with waiting to detect the sample.

2. The shear force detecting block according to claim 1, characterized in that: the power component (4) comprises a fixed block (41) fixedly arranged on the bottom plate (2), the fixed block (41) is connected with two connecting rods in a sliding way along the distribution direction of the two supporting plates (3), the two connecting rods are respectively and fixedly connected with the two supporting plates (3), the fixed block (41) is rotatably connected with a rotating piece through a rotating shaft, two ends of the rotating piece are respectively extended outwards to form linkage blocks (442), two connecting rods are respectively provided with linkage grooves (45) corresponding to the two linkage blocks (442), two ends of the two linkage blocks (442) which are back to back are respectively inserted into the two linkage grooves (45), the connecting rods can move under the action of the linkage block (442), a driving piece used for driving one of the connecting rods to move is arranged on the fixing block (41), and the two connecting rods can synchronously move oppositely or back to back under the action of the driving piece.

3. The shear force detecting block according to claim 2, characterized in that: the driving piece comprises a screw rod (47) which is rotatably connected to the fixing block (41), the screw rod (47) is arranged along the moving direction of the connecting rods, and the screw rod (47) is in threaded connection with one of the connecting rods.

4. The shear force detecting block according to claim 3, characterized in that: and the screw (47) is fixedly provided with a limiting sheet (471) for limiting the moving range of the connecting rod.

5. The shear force detecting block according to claim 1, characterized in that: the bottom plate (2) is fixedly provided with a fixing frame, the fixing frame is fixedly provided with a guide rod (6) and two guide sliding blocks (33) along the moving direction of the supporting plate (3), and the supporting plate (3) is fixedly provided with a connecting sliding block (33) respectively, and the connecting sliding blocks (33) are sleeved on the outer side of the guide rod (6) and are connected with the guide rod (6) in a sliding manner.

6. The shear force detecting block according to claim 1, characterized in that: the utility model discloses a sliding device, including bottom plate (2), backup pad (3), bottom plate (2) are last to have seted up sliding groove (22), set firmly on backup pad (3) with sliding groove (22) corresponding sliding block (32), sliding block (32) slide and connect in sliding groove (22), be provided with on sliding block (32) and be arranged in its retaining member of locking in sliding groove (22).

7. The shear force detecting block according to claim 6, wherein: the cross sectional shape of groove (22) that slides is the type of falling T, the retaining member includes locking bolt (321) of threaded connection on sliding block (32), locking bolt (321) bottom butt is on the diapire of groove (22) slides.

8. The shear force detecting block according to claim 1, characterized in that: and a magnet (21) connected with the universal testing machine is fixedly arranged on the bottom plate (2).