CN212483151U - Elasticity architectural coatings tensile test anchor clamps - Google Patents

Abstract

The utility model relates to an elasticity architectural coatings tensile test anchor clamps, test fixture includes anchor clamps, anchor clamps down, it is the same with anchor clamps structure to go up anchor clamps, anchor clamps are equipped with "U" type open-ended clamp mouth down, be equipped with first clamp splice and second clamp splice in the clamp mouth, all be equipped with the sawtooth in the one side that first clamp splice and second clamp splice are close to each other, the sawtooth on the first clamp splice and the crisscross setting of sawtooth on the second clamp splice, all be connected with the bolt on the terminal surface that two clamp splices were kept away from each other, anchor clamps correspond bolt position department be equipped with bolt screw thread assorted screw hole, the bolt passes screw hole butt to clamp splice, the one end of bolt keeping away from the clamp splice is connected with the fixed block that is located down outside the anchor clamps, the cover is equipped with fastening spring on the bolt, fastening spring. Increase the effort to the clamp splice through setting up fastening spring, make between two clamp splices more firm to the membrane butt, improve efficiency of software testing.

Description

Elasticity architectural coatings tensile test anchor clamps

Technical Field

The utility model belongs to the technical field of material test anchor clamps technique and specifically relates to an elasticity architectural coatings tensile test anchor clamps are related to.

Background

The elastic building paint is prepared with synthetic resin emulsion as base material, pigment, stuffing and assistant, and after being painted in certain thickness, it can cover the elastic functional material with small crack caused by the stretching motion of the base material. Because the elastic coating is mainly used for decorating the inner wall or the outer wall of a building, the elongation at break and the tensile strength of the elastic coating directly influence the performance of the elastic coating, and in the performance optimization of the elastic coating, the tensile performance of the elastic coating is an important mechanical index of the elastic building coating and is a necessary detection item.

Currently, in the detection of the tensile property of an elastic building coating, a coating sample needs to be subjected to film making, film forming maintenance and dry film, and finally, a tensile test is completed. Tensile test refers to a test method for measuring material properties under an axial tensile load. The data obtained from the tensile test can be used to determine the elastic limit, elongation, elastic modulus, proportional limit, area reduction, tensile strength, yield point, yield strength and other tensile property indexes of the material. The tensile test anchor clamps itself is exactly a locking mechanism, generally adopts and presss from both sides the structure to, and when the test, initial anchor clamps clamp force is big, and along with experimental power increases, can reduce gradually the membrane clamp force, the phenomenon that the sample takes off the clamp appears easily, causes operator's oversampling and test.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an elasticity architectural coatings tensile test anchor clamps through setting up the effort of fastening spring increase to the clamp splice, makes between two clamp splices more firm to the membrane butt, improves efficiency of software testing.

The above object of the present invention is achieved by the following technical solutions: the utility model provides an elasticity architectural coatings tensile test anchor clamps, test fixture includes anchor clamps, anchor clamps down, it is the same with lower anchor clamps structure to go up anchor clamps, anchor clamps are equipped with "U" type open-ended and press from both sides the mouth down, be equipped with first clamp splice and second clamp splice in pressing from both sides the mouth, all be equipped with the sawtooth in the one side that first clamp splice and second clamp splice are close to each other, sawtooth on the first clamp splice and the crisscross setting of sawtooth on the second clamp splice, all be connected with the bolt on the terminal surface that two clamp splices kept away from each other, anchor clamps are equipped with the screw hole with bolt screw thread assorted in corresponding bolt position department, the bolt passes screw hole butt to clamp splice, the bolt is connected with the outer fixed block of anchor clamps under keeping away from the one end of clamp splice, the cover is equipped.

Through adopting above-mentioned technical scheme, set up fastening spring on the bolt, fastening spring's elastic ring and the one side butt of clamp splice utilize the compression force of spring self to increase the application of bolt to the clamp splice, make the butt tighter between two clamp splices. During testing, the film between the two clamping blocks is prevented from falling off under the action of the vertical tension force, and the test is prevented from being influenced. When the sample film is placed between the two clamping blocks, the clamping blocks for clamping the sample can be pre-fixed by the fastening springs sleeved on the bolts, and then one ends of the bolts are abutted to the surfaces of the clamping blocks, so that the clamping blocks are fixed between the two bolts; meanwhile, when the two ends of the sample film in the upper clamp and the lower clamp are required to be adjusted to be in the same plane in the vertical direction, the fastening springs in the upper clamp and the lower clamp are adjusted to enable the same sample film clamped in the upper clamp and the lower clamp to be kept in the vertical direction, and the clamping blocks are further fixed through bolts. The two clamping blocks are abutted more tightly by matching the fastening spring with the bolt, so that the sample film is accelerated to be placed, the time for adjusting the positions of the clamping blocks is shortened, and the testing speed is improved.

Preferably, the end surface of the saw tooth is arc-shaped.

Through adopting above-mentioned technical scheme, the terminal surface that the circular arc set up can reduce the damage to the membrane between two clamp splices, makes the membrane relatively keep intact, can reduce the damage to the membrane clamping part so that break off at the clamping part when exerting pulling force.

Preferably, the fastening spring is fixedly connected with a reinforcing ring at the joint of the fastening spring and the clamping block.

Through adopting above-mentioned technical scheme, the area of contact of fastening spring with the clamp splice has been increased in setting up of reinforcement ring, and fastening spring butt clamp splice makes the clamp splice more stable.

Preferably, a positioning bump for limiting the position of the sample membrane is arranged at the position, close to the bottom of the clamping opening of the lower clamp, of the first clamping block, the positioning bump is located at the joint of the first clamping block and the second clamping block, and a clamping groove is arranged at the joint of the second clamping block, corresponding to the positioning bump.

Through adopting above-mentioned technical scheme, when placing the membrane towards between first fixture block and the second fixture block, sample membrane tip butt joint to the locating convex block for the degree of depth that stretches into two fixture blocks is injectd, and when a plurality of samples need be tested, can make every sample stretch into the degree of depth of two fixture blocks the same, makes the condition of same batch sample test the same, improves the accuracy of test, reduces testing error.

Preferably, the end faces, facing the bottom of the clamping opening, of the first clamping block and the second clamping block are respectively and fixedly provided with a sliding block, the bottom of the clamping opening of the lower clamp is provided with a sliding groove matched with the sliding block, and the sliding groove extends along the moving direction of the two clamping blocks.

Through adopting above-mentioned technical scheme, after placing the sample between two clamp splices, further fix two clamp splices through the bolt, the bolt drives the clamp splice and draws close mutually, the slider with the spout removal, guide two clamp splices and remove along the spout all the time, draw close mutually, the clamp splice has been avoided in the removal in-process to the setting up of slider and spout taking place the skew, takes place the skew when making the clamp splice of two butts extrude the sample membrane. When two clamp splices take place the skew, the sample membrane receives the pulling force, and sample membrane one end skew, the whole membrane of sample membrane expandes not on the coplanar, can take place local the torsion, needs the position of operator manual regulation clamp splice, or can produce experimental error when direct measurement, influences the test result.

Preferably, the lower clamp is provided with a marking line for marking the position of the clamping block.

Through adopting above-mentioned technical scheme, when two clamp splices removed towards pressing from both sides mouthful middle part, need remove the bolt at both ends, can not directly judge the position that two clamp splices removed in removing, if more that one end removed is not when the middle part, the relative meeting that the other end removed can be less, is difficult for observing the skew position of clamp splice when the test, and when upper and lower anchor clamps were to the tensile application of force of sample membrane, the clamping part of two upper and lower clamp splices is different, can cause test error. When a plurality of samples are tested, the marking lines are arranged on the clamp body, so that the position of the clamping block can be determined, the position of the clamping block can be determined when the clamping block is tested at each time, the test can be carried out quickly, and the test accuracy is improved.

Preferably, a frosting layer for increasing friction is arranged on the surface of the fixing block.

Through adopting above-mentioned technical scheme, the dull polish layer has multiplicable the frictional force on fixed block surface, and the operation of being convenient for uses the bolt.

Preferably, the end face, far away from the clamping opening, of the upper clamp is connected with a connecting rod, and a pressure sensor used for measuring a tensile test force value is arranged on the connecting rod.

By adopting the technical scheme, the pressure sensor can convert the testing force value in the tensile test into digital information so as to record the test data.

To sum up, the utility model discloses a beneficial technological effect does:

1. the butt is tighter between two clamp blocks due to the cooperation of the fastening spring and the bolt, after a sample is placed, the fastening spring can pre-fix the clamp blocks, the upper position and the lower position of the membrane can be conveniently adjusted through the fastening spring on the upper clamp and the lower clamp, one end of the bolt is abutted to the surface of the clamp blocks, the sample membrane is fixed and tested, the sample membrane is accelerated to be placed by the fastening spring, the time for adjusting the position of the clamp blocks is shortened, and the testing efficiency is improved.

2. The sliding blocks arranged on the clamping blocks and the sliding grooves arranged on the clamp enable the clamping blocks to move on the clamp along the sliding grooves, and the clamping blocks of the upper clamp and the lower clamp are prevented from deviating in corresponding clamp openings of the clamp to influence an experimental result.

Drawings

Fig. 1 is a schematic view of the overall structure of the vertical stretching clamp of the present invention.

Fig. 2 is an exploded view of the lower clamp of the present invention.

In the figure, 1, an upper clamp; 2. a lower clamp; 21. clamping the opening; 22. a threaded hole; 31. a first clamping block; 32. a second clamp block; 33. saw teeth; 41. a bolt; 42. a fastening spring; 43. a reinforcing ring; 44. a fixed block; 51. positioning the bump; 52. a card slot; 61. a slider; 62. a chute; 7. marking a line; 8. a pressure sensor; 9. a connecting rod.

Detailed Description

The present invention will be described in further detail with reference to the accompanying fig. 1-2.

Referring to fig. 1 and 2, an elastic architectural coating tensile test fixture disclosed by the present invention comprises an upper fixture 1, lower anchor clamps 2, it is the same with lower anchor clamps 2 structure to go up anchor clamps 1, it all is equipped with "U" type open-ended clamp mouth 21 with lower anchor clamps 2 to go up anchor clamps 1, be equipped with first clamp splice 31 and second clamp splice 32 in the clamp mouth 21, all be equipped with sawtooth 33 on the one side that first clamp splice 31 and second clamp splice 32 are close to each other, the terminal surface of sawtooth 33 is circular-arc setting, sawtooth 33 on the first clamp splice 31 and the crisscross setting of sawtooth 33 on the second clamp splice 32, all be connected with bolt 41 on the terminal surface that two clamp splices kept away from each other, the mounting groove has been seted up corresponding bolt 41 butt department to the clamp splice, anchor clamps are equipped with in corresponding bolt 41 position with bolt 41 screw thread assorted screw hole 22, bolt 41 passes in screw hole 22 butt mounting groove to the clamp splice, bolt 41 is difficult for sliding when making bolt 41 butt clamp splice screw. One end of the bolt 41 far away from the clamping block is connected with a fixing block 44 positioned outside the lower clamp 2, a frosting layer used for increasing friction is arranged on the surface of the fixing block 44, a fastening spring 42 is sleeved on the bolt 41, the fastening spring 42 is positioned in the clamping opening 21, a reinforcing ring 43 is fixedly connected at the connecting position of the fastening spring 42 and the clamping block, and the axial lead of the reinforcing ring 43 is positioned on the same line of the axial line of the fastening spring 42.

Referring to fig. 1 and 2, when a sample film is placed between the two clamping blocks, the clamping blocks for clamping the sample can be pre-fixed by the fastening spring 42 sleeved on the bolt 41, and then one end of the bolt 41 is abutted to the mounting groove of the clamping block, so that the clamping block is fixed between the two bolts 41. When the position of the film in the upper clamp 1 and the lower clamp 2 needs to be adjusted to keep the upper end and the lower end of the sample film on the same vertical plane, the fastening springs 42 in the upper clamp 1 and the lower clamp 2 are adjusted, and the two clamping blocks are further fixed by the bolts 41. Through the cooperation use of fastening spring 42 and bolt 41, not only make two clamp splice butts tighter, also accelerated the sample membrane simultaneously and placed, reduced the time of adjustment clamp splice position, improved test rate.

Referring to fig. 1 and 2, the upper jig 1 and the lower jig 2 are each provided with a marking line 7 for marking the position of the clamping block. The end faces, facing the bottom of the clamping opening 21, of the first clamping block 31 and the second clamping block 32 are both fixedly provided with a sliding block 61, the bottom of the clamping opening 21 of the lower clamp 2 is provided with a sliding groove 62 used for sliding the sliding block 61, the sliding groove 62 extends along the moving direction of the two clamping blocks, the sliding block 61 moves along the axial direction of the bolt 41, the sliding groove 62 is a dovetail groove in the embodiment, and the sliding block 61 is limited to slide only in the sliding groove 62 due to the design of the dovetail groove, so that the sliding block does not depart from the sliding groove. After placing the sample between two clamp splices, bolt 41 further makes the clamp splice draw close each other, makes slider 61 remove in with spout 62, and two clamp splices of guide draw close to mark line 7 department each other, avoid appearing the clamp splice and take place the skew at the removal in-process, take place the skew when the clamp splice of two butts extrudees the sample membrane. When two clamp splices took place the skew, the sample membrane received vertical direction's pulling force, and sample membrane one end skew, and the whole membrane of sample membrane expandes not on the coplanar, can take place local torsion, can produce experimental error if direct measurement time, influences the test result, and the position of clamp splice has been increased when the operator manual regulation.

Referring to fig. 1 and 2, the first block 31 is provided with a positioning protrusion 51 for defining a position of a sample membrane near the bottom of the clamping opening 21 of the lower clamp 2, the positioning protrusion 51 is located at a connection of the first block 31 and the second block 32, and the second block 32 is provided with a clamping groove 52 at a connection corresponding to the positioning protrusion 51. When the film is placed between the first clamping block 31 and the second clamping block 32, the end part of the sample film is abutted to the positioning lug 51 and used for limiting the depth of the film extending into the two clamping blocks.

Referring to fig. 1, a connecting rod 9 is connected to an end surface of the upper clamp 1 away from the clamping opening 21, and a pressure sensor 8 for measuring a tensile test force value is arranged on the connecting rod 9.

The implementation principle of the embodiment is as follows: the stability of the clamping force is realized through the combined action of the fastening spring 42 and the bolt 41, so that the sample film is not easy to fall off; the fastening spring 42 has a pre-fixing function on a placed sample, is convenient for adjusting the position of a sample film in the upper clamp 2 and the lower clamp 2, and then is combined with the acting force of the bolt 41 to realize the fixation of the clamping block; the sliding block 61 on the clamping block and the sliding groove 62 on the fixture are arranged to play a role in guiding the movement of the clamping block, so that the deviation is generated during the movement, the accuracy of placing a sample is improved, the time for adjusting the position of the clamping block when a sample film is placed is reduced, and the detection rate is improved.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims (8)

1. The utility model provides an elasticity architectural coatings tensile test anchor clamps, test fixture includes anchor clamps (1), lower anchor clamps (2), its characterized in that: go up anchor clamps (1) and anchor clamps (2) structure the same down, anchor clamps (2) are equipped with "U" type open-ended and press from both sides mouthful (21) down, be equipped with first clamp splice (31) and second clamp splice (32) in pressing from both sides mouthful (21), all be equipped with sawtooth (33) on first clamp splice (31) and the one side that second clamp splice (32) are close to each other, sawtooth (33) on first clamp splice (31) and sawtooth (33) on second clamp splice (32) set up in the crisscross way, all be connected with bolt (41) on the terminal surface that two clamp splices kept away from each other, anchor clamps are equipped with screw hole (22) with bolt (41) screw thread matching in corresponding bolt (41) position department, bolt (41) pass screw hole (22) butt to clamp splice, bolt (41) are connected with and are located anchor clamps (2) outer fixed block (44) down in the one end of keeping away from the clamp splice, the cover is equipped with fastening spring (42) on bolt (41), fastening spring (42) are located in pressing.

2. The elastic architectural coating tensile test fixture of claim 1, wherein: the end surface of the saw teeth (33) is arranged in an arc shape.

3. The elastic architectural coating tensile test fixture of claim 2, wherein: the fastening spring (42) is fixedly connected with a reinforcing ring (43) at the joint of the fastening spring and the clamping block.

4. The elastic architectural coating tensile test fixture of claim 2, wherein: the first clamping block (31) is provided with a positioning bump (51) used for limiting the position of a sample membrane at the position close to the bottom of a clamping opening (21) of the lower clamp (2), the positioning bump (51) is positioned at the joint of the first clamping block (31) and the second clamping block (32), and the second clamping block (32) is provided with a clamping groove (52) at the joint corresponding to the positioning bump (51).

5. The elastic architectural coating tensile test fixture of claim 4, wherein: the end faces, facing the bottom of the clamping opening (21), of the first clamping block (31) and the second clamping block (32) are fixedly provided with sliding blocks (61), the bottom of the clamping opening (21) of the lower clamp (2) is provided with sliding grooves (62) matched with the sliding blocks (61), and the sliding grooves (62) extend along the moving direction of the two clamping blocks.

6. The elastic architectural coating tensile test fixture of claim 1, wherein: the lower clamp (2) is provided with a marking line (7) for marking the position of the clamping block.

7. The elastic architectural coating tensile test fixture of claim 1, wherein: and a frosting layer for increasing friction is arranged on the surface of the fixed block (44).

8. The elastic architectural coating tensile test fixture of claim 1, wherein: the end face, far away from the clamping opening (21), of the upper clamp (1) is connected with a connecting rod (9), and a pressure sensor (8) used for measuring a tensile test force value is arranged on the connecting rod (9).

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