CN216747125U

CN216747125U - Concrete splitting tensile strength test fixture

Info

Publication number: CN216747125U
Application number: CN202220176227.1U
Authority: CN
Inventors: 黄伟; 辛栋梁; 丘贵华; 苏小青; 张世元; 黄志强
Original assignee: Xiamen Traffic Construction Engineering Inspection Co ltd
Current assignee: Xiamen Traffic Construction Engineering Inspection Co ltd
Priority date: 2022-01-21
Filing date: 2022-01-21
Publication date: 2022-06-14
Anticipated expiration: 2032-01-21

Abstract

The application discloses concrete splitting tensile strength test anchor clamps relates to concrete detection technical field, it includes the top board, the holding down plate, the steel gasket strip, curb plate and support the piece, the two phase of steel gasket strip to the top board and the holding down plate sets up on the side, two steel gasket strips support to connect to on the radial both sides of test piece, two curb plates are located the axial both sides of test piece respectively and the lower extreme all is connected fixedly with the holding down plate, the both sides board all corresponds threaded connection and supports the piece, two support coaxial setting of piece and two are equallyd divide to the setting end and do not support tightly to the axial both ends of test piece. This application has the experimental effect of concrete splitting tensile strength of being convenient for.

Description

Concrete splitting tensile strength test fixture

Technical Field

The application relates to the technical field of concrete detection, in particular to a concrete splitting tensile strength test clamp.

Background

At present, the tensile strength of concrete refers to the tensile strength of the axis of concrete, namely the stress value obtained by dividing the maximum load borne by a concrete sample when the concrete sample is broken after being subjected to tension by the sectional area. Because the direct tensile test is difficult to use and the test data has large discreteness, the splitting tensile test is mostly used for indirectly measuring the tensile strength of the concrete.

In the splitting test mode in the prior art, a test piece is placed on a steel backing strip of a lower pressure plate on a testing machine, then an upper pressure plate is pressed on the test piece, the upper pressure plate is continuously subjected to pressure test through the pressure testing machine until the test piece is damaged, and a corresponding numerical value is recorded.

However, in the above-mentioned method, when the splitting test is performed, if the test piece is a cylindrical test piece, the test piece is unstable when being mounted, and is easy to slide off the cushion block, so that the operation is inconvenient, and therefore, the improvement is needed.

SUMMERY OF THE UTILITY MODEL

For the convenience of the splitting tensile strength test of the concrete test piece, the application provides a concrete splitting tensile strength test clamp.

The application provides a concrete splitting tensile strength test fixture adopts following technical scheme:

the utility model provides a concrete splitting tensile strength test anchor clamps, includes top board, holding down plate, steel gasket strip, curb plate and supports the piece, the steel gasket strip is installed to the double-phase of top board and holding down plate to setting up the side, two the steel gasket strip supports to the radial both sides of test piece, the curb plate is located the axial both sides and the lower extreme of test piece and all is connected fixedly with the holding down plate, two the curb plate all corresponds threaded connection and supports the piece, two support the piece and equally divide and do not support tightly to the axial both ends of test piece.

Through adopting above-mentioned technical scheme, realize the splitting test to time through top board, holding down plate and steel gasket strip, the setting of curb plate and piece that supports will realize pressing from both sides tightly fixedly from the axial both ends of test piece, through placing the work piece on the holding down plate, then carry out the tight piece that supports of both sides earlier and support tightly fixedly, then place the top board again, place the top board this moment and be difficult for causing the influence to the position of work piece, so will be convenient for the stable operation of the splitting test of test piece.

Preferably, two a side of steel filler strip and test piece butt still is provided with the cushion, the cushion adopts wooden three-ply board or hard fibreboard.

Through adopting above-mentioned technical scheme, through be provided with the cushion layer between steel filler strip and test piece, utilize cushion layer's cushioning effect and guard action, can reduce the steel filler strip to the wearing and tearing on test piece surface and influence the splitting experiment precision of test piece.

Preferably, elastic clamping pieces are further installed at two ends of the steel backing strip and located on the upper side of the steel backing strip, and the buffer cushion layer is clamped and fixed between the steel backing strip and the elastic clamping pieces.

Through adopting above-mentioned technical scheme, through setting up the elasticity clamping piece on the steel backing strip, utilize the elasticity clamping piece to press from both sides tight fixed to the cushion, the stable of the cushion of being convenient for is placed.

Preferably, the elastic movable end of the elastic clamping piece is provided with a plurality of support legs, and the support legs are arranged along the width direction of the cushion layer.

Through adopting above-mentioned technical scheme, be provided with a plurality of stabilizer blades through the elasticity expansion end at the elasticity clamping piece, utilize numerous stabilizer blades to improve the contact point of elasticity clamping piece and cushion layer, improve the tight stability of clamp of elasticity clamping piece to cushion layer.

Preferably, two the curb plate set up the side in opposite directions and all seted up the groove that slides, the top board is provided with the sliding block of being connected with sliding groove slides.

Through adopting above-mentioned technical scheme, through being provided with the groove of sliding at the curb plate inside wall, be provided with the sliding block on the top board, utilize the groove of sliding and the joint action and the guidance quality of sliding block, will be convenient for improve the stability of sliding of top board.

Preferably, a plurality of threaded holes are uniformly formed in the two side plates, each threaded hole is arranged in the vertical direction, and the abutting piece can be in threaded connection with any one threaded hole.

Through adopting above-mentioned technical scheme, be provided with a plurality of screw holes through vertical arranging on the curb plate and can supply to tight piece threaded connection, because the diameter specification of test piece differs, consequently will be through to support in tight piece threaded connection to arbitrary screw hole for support the piece and can keep corresponding butt to the central point position department of test piece, further improve the tight stability of clamp of test piece.

Preferably, a plurality of vertical insertion grooves are formed in the opposite sides of the two side plates, the insertion grooves are uniformly distributed along the radial direction of the test piece, a positioning plate is further arranged between the two side plates, and the positioning plate can be inserted into any one pair of insertion grooves.

Through adopting above-mentioned technical scheme, through being provided with the inserting groove between the board of both sides, and insert and be equipped with the locating plate, utilize the horizontal position that the locating plate can fix a position the test piece, set up a plurality of inserting grooves and can supply the locating plate to carry out selective grafting to be applicable to the location operation of the test piece of different diameter specifications.

Preferably, the vertical width of the positioning plate is smaller than the radius of the test piece.

Through adopting above-mentioned technical scheme, through injecing the vertical width of locating plate upper end, can the slippage during use to the position with the test piece butt, can slide the locating plate to below the test piece axis horizontal plane after accomplishing the location.

Preferably, one end of each of the two abutting pieces, which is far away from the test piece, is provided with an internal hexagonal screwing groove.

By adopting the technical scheme, the arrangement of the screwing groove is convenient for a user to screw and operate the abutting piece.

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

the multi-directional clamping and fixing of the test piece are realized by arranging the upper pressing plate, the lower pressing plate, the steel filler strip, the side plate and the abutting piece, so that the cylindrical test piece is conveniently clamped and fixed, and the splitting tensile strength test of the concrete test piece is facilitated;

the sliding groove and the positioning plate are arranged, so that the test piece can be accurately positioned;

drawings

Fig. 1 is a schematic view of the overall structure of a clip according to an embodiment of the present application.

Description of reference numerals:

1. an upper pressure plate; 2. a lower pressing plate; 3. a steel backing strip; 4. a side plate; 5. an abutting piece; 6. a sliding groove; 7. a sliding block; 8. a threaded hole; 9. screwing grooves; 10. inserting grooves; 11. positioning a plate; 12. a cushion layer; 13. an elastic clip; 14. and (3) a support leg.

Detailed Description

The present application is described in further detail below with reference to fig. 1.

The embodiment of the application discloses concrete splitting tensile strength test fixture. Referring to fig. 1, anchor clamps include top board 1, holding down plate 2, steel gasket strip 3, curb plate 4 and support piece 5, steel gasket strip 3 is to setting up on the side to two of top board 1 and holding down

plate

2, 3 butt of two steel gasket strips are to the radial both sides of test piece, two curb plates 4 are located the axial both sides of test piece respectively and the lower extreme all is connected fixedly with holding down plate 2, both sides board 4 all corresponds threaded connection and supports piece 5, two support 5 coaxial settings and two are equallyd divide to the setting end and do not support tightly to the axial both ends of test piece.

In this embodiment, the groove 6 that slides of vertical setting is all seted up to two curb plate 4's the side that sets up in opposite directions, and the groove 6 that slides all sets up with curb plate 4 up end intercommunication, and the sliding block 7 of being connected with the groove 6 that slides is installed at the both ends of top board 1, plays the effect that the direction slided.

Two screw holes 8 have all been seted up to two curb plates 4, and each screw hole 8 all runs through curb plate 4 along 4 thickness directions of curb plate, and each screw hole 8 all arranges the setting along vertical direction, supports that tie-down piece 5 can with arbitrary 8 threaded connection of screw hole, is applicable to supporting tightly fixed of test piece of different diameter specifications, ensures to support tie-down piece 5 and supports the center pin position to the test piece tightly. Further, the one end that two piece 5 kept away from the test piece all seted up interior hexagonal angle shape and twisted groove 9 soon.

Further, be convenient for the ascending location of level of test piece, the inserting groove 10 of the vertical setting of twice will all be seted up in the side of setting up in opposite directions of two curb plates 4, twice inserting groove 10 all sets up with 4 up end intercommunication of curb plate, the radial direction equipartition of test piece is all followed to twice inserting groove 10 and sets up, still install locating plate 11 between two curb plates 4, locating plate 11 can be pegged graft to in arbitrary a pair of inserting groove 10, with the horizontal location who is applicable to different test pieces, wherein, the vertical width size of locating plate 11 is less than the test piece radius size, the convenience is under the condition of realizing the location, can not dismantle when using, also can make locating plate 11 not butt to the test piece side when detecting simultaneously, do not influence the test result.

Two steel filler strips 3 all are the arc form setting with a terminal surface of test piece contact, and a side of two steel filler strips 3 and test piece butt still is provided with cushion 12, and cushion 12 can adopt wooden three-ply board or stereoplasm limiting plate in this embodiment, and thickness is 3-4 mm.

Further, for making things convenient for the stable installation of cushion 12 fixed, will install elastic clamping piece 13 at 3 length direction's of steel backing strip both ends, elastic clamping piece 13's elasticity position extends 3 upsides of steel backing strip, so that fix the blotter clamping to between steel backing strip 3 and the elastic clamping piece 13, each elastic clamping piece 13's elasticity expansion end shaping has a plurality of stabilizer blades 14, each stabilizer blade 14 arranges the setting along the width direction of cushion 12, with the stability that compresses tightly of improvement cushion 12.

The implementation principle of the concrete splitting tensile strength test clamp in the embodiment of the application is as follows: the test piece is placed on the upper pressure plate 1 during passing, the test piece is abutted and positioned to the lower pressure plate 2 and the positioning plate 11, then the abutting pieces 5 on the two sides of the test piece are abutted and fixed, the upper pressure plate 1 is installed on the upper side of the test piece, and then the clamp is placed on the compression testing machine for detection.

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 concrete splitting tensile strength test anchor clamps, its characterized in that, includes top board (1), holding down plate (2), steel gasket strip (3), curb plate (4) and supports tiepiece (5), steel gasket strip (3) are installed two-phase to setting up the side of supreme clamp plate (1) and holding down plate (2), two steel gasket strip (3) butt to the radial both sides of test piece, axial both sides and the lower extreme that curb plate (4) are located the test piece all are connected fixedly with holding down plate (2), two curb plate (4) all correspond threaded connection and support tiepiece (5), two it equallys divide equally to support tiepiece (5) and do not support the axial both ends to the test piece tightly.

2. The concrete splitting tensile strength test fixture according to claim 1, wherein a cushion layer (12) is further arranged on one side surface of the two steel filler strips (3) abutted to the test piece, and the cushion layer (12) is made of a wood plywood or a hard fiberboard.

3. The concrete splitting tensile strength test clamp according to claim 2, wherein elastic clamping pieces (13) are further mounted at two ends of the steel filler strip (3), the elastic clamping pieces (13) are located on the upper side of the steel filler strip (3), and the cushion pad layer (12) is clamped and fixed between the steel filler strip (3) and the elastic clamping pieces (13).

4. The concrete splitting tensile strength test fixture according to claim 3, wherein a plurality of support legs (14) are arranged at the elastic movable end of the elastic clamping piece (13), and each support leg (14) is arranged along the width direction of the cushion layer (12).

5. The concrete splitting tensile strength test clamp according to claim 1, wherein the opposite sides of the two side plates (4) are provided with sliding grooves (6), and the upper pressing plate (1) is provided with sliding blocks (7) connected with the sliding grooves (6) in a sliding manner.

6. The clamp for the concrete splitting tensile strength test according to claim 1, wherein a plurality of threaded holes (8) are uniformly distributed in the two side plates (4), each threaded hole (8) is vertically arranged, and the abutting piece (5) can be in threaded connection with any one of the threaded holes (8).

7. The concrete splitting tensile strength test fixture according to claim 1, wherein a plurality of vertically arranged insertion grooves (10) are respectively formed in the opposite sides of the two side plates (4), each insertion groove (10) is uniformly distributed along the radial direction of the test piece, a positioning plate (11) is further arranged between the two side plates (4), and the positioning plate (11) can be inserted into any pair of insertion grooves (10).

8. The clamp for the concrete splitting tensile strength test according to claim 7, wherein the vertical width of the positioning plate (11) is smaller than the radius of the test piece.

9. The concrete splitting tensile strength test clamp according to claim 1, wherein one end of each of the two abutting pieces (5) far away from the test piece is provided with a screwing groove (9) with an inner hexagonal shape.