CN211061328U - Detection equipment for detecting flexibility of plastering mortar - Google Patents

Abstract

The utility model relates to a testing device for testing the flexibility of plastering mortar, which belongs to the technical field of building material testing equipment. , the specimen clamping piece includes a limit plate, the upper end surface of the base is provided with a sliding frame, the sliding frame includes a sliding plate, the upper end surface of the sliding plate is provided with a number of chutes along the direction perpendicular to one side of the limiting plate, and the upper end surface of the sliding table is provided with The mortar hammer is parallel to the length direction of the chute. The outer peripheral surface of the mortar hammer is provided with a hammer clamp that is slidably connected to the chute, so that the mortar hammer that moves toward the limit plate is always inserted vertically into the Mortar specimens, and then the surface hardness of the mortar specimens is measured, thereby improving the perpendicularity of the mortar rebound tester and the plastering mortar specimens, which is beneficial to improve the accurate measurement of the compressive strength of the mortar, and thus is conducive to the flexibility of the plastering mortar. sex detection.

Description

A testing device for testing the flexibility of plastering mortar

technical field

The utility model relates to the technical field of building material testing equipment, in particular to a testing equipment for testing the flexibility of plastering mortar.

Background technique

As an important building material, mortar is widely used in construction projects. The external thermal insulation function of the building exterior wall is usually realized by improving the flexibility of the mortar applied on the surface of the exterior wall, so the determination of the flexibility of the mortar during the inspection process of the construction project is particularly critical.

At present, the compressive-fold ratio (the ratio of compressive strength to flexural strength) of plastering mortar specimens is usually used as a measure of the flexibility of mortar in construction projects. Usually, the flexural strength of plastering mortar can be measured by a pressure testing machine. In the testing of compressive strength of plastering mortar, due to the simple operation and convenient use of the mortar tester, the test of the mortar rebound tester is often used. The surface hardness of the mortar is determined by the rebound method, and the compressive strength of the mortar is estimated according to the rebound value and carbonization depth, and the flexibility of the mortar is judged by the indentation ratio. The smaller the indentation ratio, the more flexible the mortar. it is good.

However, in the process of using the mortar rebound tester, it is necessary to keep the surface perpendicular to the plastering mortar, and in actual operation, the inspector needs to maintain the perpendicularity of the two by hand, which makes it easy to produce measurement deviation in the measurement operation, and then It is not conducive to the detection of the flexibility of plastering mortar.

Utility model content

In view of the deficiencies of the prior art, the purpose of the present invention is to provide a detection device for detecting the flexibility of plastering mortar, which has the advantage of improving the verticality between the mortar rebound tester and the plastering mortar.

To achieve the above object, the utility model provides the following technical solutions:

A detection device for detecting the flexibility of plastering mortar, comprising a base and a pressure testing machine body arranged on the upper end face of the base, characterized in that: the upper end face of the base is provided with a specimen clamping piece, and the specimen clamping piece is provided on the upper end face of the base The tightening piece includes a limit plate, the upper end surface of the base is provided with a sliding frame, the sliding frame includes a sliding plate, and a plurality of sliding grooves are opened on the upper end surface of the sliding plate along a direction perpendicular to one side of the limiting plate. The upper end surface of the sliding table is provided with a mortar hammer that is parallel to the longitudinal direction of the chute, and the outer peripheral surface of the mortar hammer is provided with a hammer clamp that is slidably connected to the chute.

By adopting the above technical solution, a chute perpendicular to the limit plate is opened on the slide plate, and the hammer clamp for holding the mortar hammer slides along the chute, so that the ejector rod of the mortar hammer is inserted vertically. The surface hardness of the mortar test piece is measured to the mortar test piece that is in contact with the limit plate, so as to improve the perpendicularity between the mortar rebound tester and the plastering mortar test piece, and it is estimated according to the rebound value and carbonization depth. The compressive strength of the mortar, and then the flexural strength of the mortar specimen is measured by a pressure testing machine, and the flexibility of the plastering mortar is estimated by the flexural ratio. This detection method is conducive to the detection of the flexibility of the plastering mortar.

The utility model is further provided as follows: the hammer clamp includes two clamping blocks which are arranged opposite to each other, and two sides of the two clamping blocks facing each other are respectively opened along the length direction of the chute and are opposite to each other. The semi-circular arc groove is provided, and the two clamping blocks are connected by bolts.

By adopting the above technical solution, the clamping block is provided with a semi-circular arc groove suitable for the mortar hammer, and at the same time, it is fixed by bolts, thereby facilitating the clamping of the mortar hammer by the clamping block.

The utility model is further configured as follows: the specimen clamping piece further comprises two vertical plates fixed on the side of the limit plate facing the mortar rebound tester and a clamp plate arranged on the side of the vertical plate away from the limit plate, so The splint and the limit plate are connected by bolts.

By adopting the above technical solution, the clamp plate and the limit plate can clamp the mortar specimen, and at the same time, the clamping distance between the clamp plate and the limit plate can be adjusted, so that the specimen clamp can clamp the specimens of different thicknesses. It is convenient to measure the compressive strength of the specimen.

The utility model is further configured as follows: the sliding frame further comprises two supporting plates vertically fixing the upper end surface of the base and located at both ends of the sliding plate, and one side of the two supporting plates disposed opposite to each other is along a direction perpendicular to the upper end surface of the base A vertical slot is opened, and the side of the support plate with the vertical slot is opened with a number of horizontal slots in the direction perpendicular to the length of the vertical slot. The two sides of the slide plate are respectively provided with sliders that are slidably connected to the vertical grooves and the horizontal grooves. The upper end surface of the slide plate is provided with several parallel grooves along the direction parallel to the limit plate toward the side of the slide plate. The parallel grooves It communicates with the side wall of the chute away from the limiting plate.

By adopting the above technical solution, vertical grooves and several horizontal grooves are set on one side of the support plate, so that the sliding plate can move up and down in the vertical direction, and parallel grooves and a number of chutes are set on the upper end surface of the sliding plate, thereby increasing the resistance of the sand paddle hammer The measurement range of the mortar specimen, and then the multi-point measurement of the mortar rebound tester is realized. By taking the average value, it is beneficial to improve the accuracy of the compressive strength of the mortar specimen.

The utility model is further provided that: one of the lower end surfaces of the clamping block is provided with a convex block slidingly connected with the parallel groove and the sliding groove.

By adopting the above technical solution, the bumps can slide in the parallel grooves and the chute, thereby realizing the guiding and limiting functions of the parallel grooves and the chute, which is beneficial to the accurate positioning of the mortar hammer.

The utility model is further provided that: the upper end surfaces of the two clamping blocks are respectively provided with through grooves communicating with the semi-circular arc grooves, and the through grooves communicate with the side of the clamping blocks close to the mortar hammer.

By adopting the above technical solution, the display screen of the mortar hammer can be arranged toward the through groove, thereby reducing the situation that the clamping block squeezes the display screen on the mortar hammer, thereby facilitating the normal use of the mortar hammer.

The utility model is further configured as follows: the side of the support plate facing away from the slide plate penetrates through a plurality of circular holes which are respectively communicated with the horizontal grooves, the side of the support plate facing away from the slide plate is provided with a plurality of pins, and the pins are inserted into the In the circular hole, one end of the pin is placed in the transverse groove.

By adopting the above technical solution, the latch pin limits the slider, and further restricts the movement of the slider, thereby reducing the situation of driving the slider to move during the movement of the mortar hammer, which is conducive to the stable measurement of the mortar test piece by the mortar hammer. .

The utility model is further provided that: the bottom wall of the semi-circular arc groove is provided with an elastic pad.

By adopting the above technical solution, the direct contact between the clamping block and the mortar hammer is reduced, thereby reducing the damage of the mortar hammer due to the clamping block being too tight, and the elastic protection of the elastic pad is conducive to extending the The service life of the mortar hammer.

To sum up, the utility model has the following beneficial effects:

1. By setting the vertical limit plate of the chute, the mortar hammer that moves towards the limit board is always inserted vertically into the mortar specimen, and then the surface hardness of the mortar specimen is measured, thereby improving the performance of the mortar hammer and wiping. The verticality of the lime mortar specimen is beneficial to improve the accurate measurement of the compressive strength of the mortar, which in turn is beneficial to the detection of the flexibility of the plastering mortar;

2. By setting up vertical grooves and several horizontal grooves on one side of the support plate, and setting parallel grooves and several chutes on the upper end face of the slide plate, the measurement range of the mortar test piece by the mortar rebound tester is increased, thereby realizing the mortar rebound tester. The multi-point measurement is beneficial to improve the accuracy of the compressive strength of the mortar specimen.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the present utility model;

Fig. 2 is the exploded view of the utility model carriage;

Figure 3 is an exploded view of the hammer clamp and the specimen clamp.

Reference signs: 1, base; 2, support frame; 21, vertical frame; 22, horizontal frame; 3, slide rail; 4, pressure testing machine body; 41, lifting beam; 42, lifting rod; 421, disc; 422, mounting plate; 423, arc plate; 43, limit frame; 431, cube block; 432, U-shaped plate; 433, cross bar; 5, specimen clamping piece; 51, limit plate; plate; 53, splint; 6, carriage; 61, support plate; 611, vertical slot; 612, horizontal slot; 613, round hole; 614, latch; 62, slide plate; 621, parallel slot; 622, chute; 7 , clamping block; 71, semi-circular arc groove; 711, elastic pad; 72, bump; 73, through groove; 8, mortar specimen; 9, mortar rebound tester.

Detailed ways

The present utility model will be described in further detail below with reference to the accompanying drawings and embodiments.

As shown in FIG. 1 , a testing device for testing the flexibility of plastering mortar includes a base 1 and a pressure testing machine body 4 fixed on the upper end face of the base 1 . The upper end surface of the base 1 is provided with a layer-inverted “L”-shaped support frame 2 , and the support frame 2 includes a vertical frame 21 vertically fixed on the upper end face of the base 1 , and is fixedly connected to the end of the vertical frame 21 away from the base 1 and is connected to the upper end surface of the base 1 . The horizontal frames 22 are arranged in parallel. Four slide rails 3 are installed between the horizontal frame 22 and the base 1 . One end of the support frame 2 is fixedly connected with the edge of the upper end face of the base 1 . The pressure testing machine body 4 includes a lifting beam 41 slidably connected to the slide rail 3 , a lifting rod 42 fixedly connected to the lower end surface of the lifting beam 41 , and a limit frame 43 located directly below the lifting rod 42 . A disc 421 is installed at the lower end of the lifting rod 42 , two mounting plates 422 which are vertically downward and facing each other are fixed respectively on both sides of the disc 421 , and an arc-shaped plate 423 is fixed between the two mounting plates 422 , which is arranged concavely towards the base 1 . . The arc-shaped plate 423 is disposed away from the disc 421 . The limiter 43 includes a cube block 431 fixed on the upper end face of the base 1 and located directly below the arc-shaped plate 423 , two U-shaped boards 432 respectively fixed on two opposite sides of the cube block 431 and arranged perpendicular to the base 1 , and Two cross bars 433 are vertically fixed between the two U-shaped plates 432 .

As shown in FIG. 1 and FIG. 3 , the upper end surface of the base 1 is fixed with a specimen clamping piece 5 located on one side of the pressure testing machine body 4 , and the specimen clamping piece 5 includes a limit plate 51 provided on one side of the parallel cube 431 . , Two vertical plates 52 fixed on the side of the limit plate 51 away from the cubic block 431 and a splint 53 on the side of the vertical plate 52 away from the limit plate 51, the plywood 53 and the limit plate 51 are connected by bolts. A mortar test piece 8 is placed between the clamp plate 53 and the limit plate 51. The two opposite sides of the mortar test piece 8 are respectively the side of the clamp plate 53 close to the limit plate 51 and the one side of the limit plate 51 close to the clamp plate 53. side abutment.

As shown in FIGS. 1 and 2 , a carriage 6 is mounted on the upper end surface of the base 1 . The carriage 6 is located on the side of the limiting plate 51 away from the cube block 431 . The carriage 6 includes two supporting plates 61 which are vertically fixed on the upper end face of the base 1 and are arranged facing each other and a sliding plate 62 located between the two supporting plates 61. A vertical slot 611 is opened in the direction of the upper end face, and the side of the support plate 61 with the vertical slot 611 is opened with several strips along the length direction perpendicular to the vertical slot 611 and the side of the vertical slot 611 close to the limit plate 51 (as shown in FIG. 3 ) The horizontal grooves 612 which communicate with each other in the walls are provided with sliders slidably connected to the vertical grooves 611 and the horizontal grooves 612 on both sides of the sliding plate 62 close to the support plate 61 respectively. ) There are several parallel grooves 621 in the direction toward the side of the sliding plate 62, and a number of sliding grooves 622 are opened on the upper end surface of the sliding plate 62 along the direction perpendicular to the limit plate 51 (as shown in FIG. 3) toward the side of the sliding plate 62, parallel The groove 621 communicates with the side wall of the chute 622 away from the limiting plate 51 (as shown in FIG. 3 ). The side of the support plate 61 facing away from the slide plate 62 penetrates through a plurality of circular holes 613 which communicate with the horizontal grooves 612 respectively. The side of the support plate 61 facing away from the slide plate 62 is installed with a number of pins 614, and the pins 614 are respectively inserted into the circular holes 613. , one end of the latch 614 is placed in the horizontal slot 612 .

As shown in FIGS. 2 and 3 , a mortar hammer 9 parallel to the longitudinal direction of the chute 622 is installed on the upper end surface of the carriage 6 , and a hammer hammer is installed on the outer peripheral surface of the mortar hammer 9 . The hammer clamping piece includes two oppositely arranged clamping blocks 7, and the two opposite sides of the two clamping blocks 7 are respectively provided with semi-circular arc grooves 71 opposite to each other along the length direction of the chute 622. An elastic pad 711 is bonded to the bottom wall of the arc groove 71 . The upper end surfaces of the two clamping blocks 7 are respectively provided with through grooves 73 communicating with the semi-circular arc groove 71 , and the through grooves 73 communicate with the side of the clamping block 7 close to the mortar hammer 9 . The two clamping blocks 7 are connected by bolts. The lower end surface of one of the clamping blocks 7 is fixed with a convex block 72 slidably connected with the parallel groove 621 and the sliding groove 622 .

The working conditions and principles of this embodiment are as follows:

When testing the flexibility of plastering mortar, first place the mortar test piece 8 between the splint 53 and the limit plate 51, and clamp it with bolts, and then use two clamping blocks 7 to clamp the mortar hammer 9 and make it. The mortar rebound tester 9 is vertically facing the mortar test piece 8 and inserted into the mortar test piece 8, thereby improving the verticality of the mortar test piece 9 and the plastering mortar test piece 8, which is beneficial to improve the accurate measurement of the compressive strength of the mortar. Subsequently, the protrusions 72 slide in the parallel grooves 621 and the sliding grooves 622, and at the same time, the sliding blocks on both sides of the sliding plate 62 slide in the vertical grooves 611 and the horizontal grooves 612, thereby increasing the measurement of the mortar test piece 8 by the mortar rebound tester. Therefore, the multi-point measurement of the mortar rebound tester 9 is realized, which is beneficial to improve the accuracy of the compressive strength of the mortar test piece 8 .

Then, take out the mortar specimen 8 from the specimen clamping piece 5 and prevent it from being between the curved plate 423 and the cross bar 433, pull the lifting rod 42 upward until the specimen breaks, record the tension-displacement curve and calculate the highest value in the curve. The net displacement at the point can be used to estimate the flexural strength of the plastering mortar, and the flexibility of the plastering mortar can be judged by the compression-folding ratio.

The examples of this specific embodiment are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore: all equivalent changes made according to the structure, shape and principle of the present invention are not It should be covered within the protection scope of the present invention.

Claims (8)

1. a detection device for detecting the flexibility of plastering mortar, comprising a base (1) and a pressure testing machine body (4) arranged on the upper end face of the base (1), it is characterized in that: on the base (1) The end face is provided with a specimen clamping piece (5), the specimen clamping piece (5) comprises a limit plate (51), the upper end face of the base (1) is provided with a sliding frame (6), the sliding frame (6) comprising a sliding plate (62), the upper end surface of the sliding plate (62) is provided with a plurality of sliding grooves (622) along a direction perpendicular to one side of the limit plate (51), and the upper end surface of the sliding plate (62) is provided with a plurality of sliding grooves (622). A mortar hammer (9) parallel to the longitudinal direction of the chute (622) is provided, and the outer peripheral surface of the mortar hammer (9) is provided with a hammer clamp that is slidably connected to the chute (622). . 2. A kind of detection equipment for detecting the flexibility of plastering mortar according to claim 1, it is characterized in that: the described rebound tester clamping piece comprises two pieces of clamping blocks (7) that are set facing each other, and the two pieces are Two sides of the clamping block (7) facing each other are respectively provided with semi-circular arc grooves (71) facing each other along the length direction of the chute (622), and the two clamping blocks (7) are connected by bolts . 3. A detection device for detecting the flexibility of plastering mortar according to claim 2, characterized in that: the test piece clamp (5) further comprises two pieces fixed on the limit plate (51) ) a vertical plate (52) facing the side of the mortar hammer (9) and a splint (53) arranged on the side of the vertical plate (52) away from the limit plate (51), the splint (53) and the limit plate (51) Connected by bolts. 4. A detection device for detecting the flexibility of plastering mortar according to claim 3, characterized in that: the carriage (6) further comprises two vertical fixed base (1) upper end surfaces and is located in the The support plates (61) at both ends of the slide plate (62), the two support plates (61) are provided with vertical grooves (611) along the direction perpendicular to the upper end face of the base (1) on the opposite side, and the support plates ( 61) The side where the vertical groove (611) is opened is provided with a number of horizontal grooves (612) which communicate with the side wall of the vertical groove (611) close to the limit plate (51) along the length direction perpendicular to the vertical groove (611). ), two sides of the sliding plate (62) close to the support plate (61) are respectively provided with sliding blocks slidingly connected with the vertical groove (611) and the horizontal groove (612), and the upper end surface of the sliding plate (62) A plurality of parallel grooves (621) are opened along the direction parallel to the limit plate (51) toward the side of the slide plate (62), and the parallel grooves (621) and the chute (622) are far away from the limit plate (51) The side walls are connected. 5. A detection device for detecting the flexibility of plastering mortar according to claim 4, wherein the lower end surface of one of the clamping blocks (7) is provided with the parallel groove (621) and the sliding The groove (622) is slidably connected to the lug (72). 6. A detection device for detecting the flexibility of plastering mortar according to claim 2, wherein the upper end faces of the two clamping blocks (7) are respectively provided with the semicircular arc grooves (71). ) communicated with the through groove (73), the through groove (73) communicates with the side of the clamping block (7) close to the mortar hammer (9). 7. A detection device for detecting the flexibility of plastering mortar according to claim 5, characterized in that: the side of the support plate (61) away from the sliding plate (62) penetrates through several horizontal grooves, respectively. (612) A circular hole (613) that communicates with each other, a plurality of pins (614) are provided on the side of the support plate (61) facing away from the sliding plate (62), and the pins (614) are inserted into the circular hole (613) ), one end of the latch (614) is placed in the transverse groove (612). 8 . The testing device for testing the flexibility of plastering mortar according to claim 2 , wherein an elastic pad ( 711 ) is provided on the bottom wall of the semi-circular arc groove ( 71 ). 9 .

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