Instrument for testing tensile adhesive strength of building mortar block adhesive

Abstract

The utility model relates to a building mortar block adhesive tensile bonding strength testing instrument which comprises a base, an adjusting mechanism is arranged on one side of the base, a limiting assembly is arranged on the right side of the adjusting mechanism, a mortar test block is clamped on the inner side of the limiting assembly, the mortar test block is in an I shape, and a detection mechanism is arranged on the right side of the limiting assembly. I-shaped mortar test blocks with different sizes are effectively centered and limited through a group of adjustable first limiting frames and a group of adjustable second limiting frames, and the second limiting frames are simultaneously adjusted along with the first limiting frames under the action of the guide rods; limiting grooves formed in the sliding frames limit one sides of the second limiting frames and do not affect adjustment of the distance between the second limiting frames, the sliding frames and the sliding grooves are matched so that the moving stability of the sliding frames can be effectively improved, and rubber pads bonded to the interiors of the sliding grooves can correspondingly buffer the sliding frames at the moment that the mortar test blocks are pulled to be collapsed. And the damage of impact force to the carriage is reduced.

Description

Technical Field

[0001] This utility model relates to the field of building adhesive bonding strength testing technology, and in particular to a testing instrument for the tensile bonding strength of building mortar block adhesive. Background Technology

[0002] The adhesive bond strength test is a test method for evaluating the bonding performance of adhesives when bonding building materials.

[0003] Patent CN216410862U discloses a mortar adhesive bonding strength pull-out tester, which can conveniently limit and pull mortar blocks, reduce the occurrence of detachment during the pulling process, reduce the impact on the test results, and facilitate loading and unloading, improving practicality. It includes a workbench, a support frame, two sets of limiting frames, a movable seat, an adjusting screw, a lifting seat, a pull-out mechanism, and a lifting hook. The workbench has a movable hole, and both sets of limiting frames are located on the workbench surface, each equipped with a weighing module. The movable seat is placed on the workbench surface and has a fixing hole with a fixed threaded tube passing through the movable hole. The top of the adjusting screw is screwed through the fixed threaded tube and rotatably connected to the bottom of the lifting seat. A rotating block is located at the bottom of the adjusting screw. The pull-out mechanism is located above the two sets of limiting frames, and the lifting hook is mounted on the pull-out mechanism.

[0004] However, the aforementioned mortar adhesive bond strength pull-out tester still has the following shortcomings:

[0005] The above-mentioned device requires a hanging ring to be bonded to the top of the mortar block for use with the lifting hook. In order to reduce errors, the hanging ring and the lifting hook need to share the same vertical center axis. Therefore, it takes a long time to compare and explore the position of the hanging ring, which reduces the testing efficiency. In view of this, we propose a testing instrument for the tensile bond strength of building mortar block adhesive. Utility Model Content

[0006] The purpose of this invention is to overcome the shortcomings of the existing technology, adapt to practical needs, and provide a testing instrument for the tensile bond strength of building mortar block adhesive. This solves the technical problem that the current device requires a hanging ring to be attached to the top of the mortar block during testing, for use with a lifting hook. In order to reduce errors, the hanging ring needs to share the same vertical center axis with the lifting hook, which requires a long time to compare and explore the position of the hanging ring, thus reducing the testing efficiency.

[0007] To achieve the purpose of this utility model, the technical solution adopted by this utility model is as follows: a test instrument for the tensile bond strength of building mortar block adhesive is designed, including a base, an adjustment mechanism is provided on one side of the base, a limiting component is provided on the right side of the adjustment mechanism, a mortar test block is clamped inside the limiting component, the mortar test block is I-shaped, and a detection mechanism is provided on the right side of the limiting component.

[0008] The limiting component includes a first limiting frame, a set of first limiting frames symmetrically arranged on one side of the adjusting mechanism, a set of guide rods fixed on the surface of the first limiting frame, a second limiting frame movably sleeved on the outside of the guide rods, a slide between the set of second limiting frames, a slide groove on the outer side of the bottom of the slide, a rubber pad glued inside the slide groove, and an I-shaped frame snapped into the middle of the slide.

[0009] Preferably, a set of limiting grooves are symmetrically provided inside the carriage, and the second limiting frame forms a locking structure with the carriage through the limiting grooves.

[0010] Preferably, the adjustment mechanism includes a positive and negative lead screw, which is mounted on one side inside the base. A motor is connected to the end of the positive and negative lead screw, and a bracket is provided outside the motor. A set of movable plates are symmetrically fitted on the surface of the positive and negative lead screw.

[0011] Preferably, the positive and negative lead screws are threadedly connected to the movable plate, and the movable plate is fixedly connected to the first limiting frame.

[0012] Preferably, the detection mechanism includes a hydraulic cylinder, which is fixed inside the base at the middle of one side. The movable end of the hydraulic cylinder is connected to a sliding plate, and a pull rope is connected to the middle of the side of the sliding plate away from the hydraulic cylinder. A tension sensor is connected to the end of the pull rope away from the sliding plate.

[0013] Preferably, the tension sensor is connected to the I-beam frame, and the horizontal central axes of the I-beam frame, tension sensor, pull rope, slide plate, and hydraulic cylinder coincide.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. This utility model effectively centers and limits I-shaped mortar test blocks of different sizes by using a set of adjustable first limiting frames and a set of adjustable second limiting frames. Under the action of the guide rod, the second limiting frame adjusts simultaneously with the first limiting frame. The limiting groove opened in the slide frame limits one side of the second limiting frame without affecting the adjustment of the distance between the set of second limiting frames. The cooperation between the slide frame and the slide groove can effectively improve the movement stability of the slide frame. The rubber pads bonded inside the slide groove can provide corresponding buffering for the slide frame at the moment the mortar test block is pulled apart, reducing the impact force damage to the slide frame.

[0016] 2. This utility model effectively drives the positive and negative lead screws to rotate in both directions via a motor, thereby causing a set of movable plates symmetrically mounted on the surface of the positive and negative lead screws to move away from or closer to each other, thereby changing the spacing between a set of first limiting frames and simultaneously changing the spacing between a set of second limiting frames, making it convenient to adapt to the centrally limiting of I-shaped mortar test blocks of different sizes.

[0017] 3. In this utility model, the tensile sensor acts on the middle of the slide frame through the I-beam frame to improve the detection accuracy. Then, the slide plate is effectively moved by the hydraulic cylinder, so that the tensile sensor can detect the tensile force of the mortar test block inside the first limit frame and the second limit frame to obtain the bonding strength data of the building adhesive. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the cross-sectional structure of the base of this utility model;

[0020] Figure 3 This is a partial structural diagram of the present invention.

[0021] In the diagram: 1. Base; 2. Adjustment mechanism; 3. Limiting component; 4. Mortar test block; 5. Testing mechanism;

[0022] 201. Lead screw; 202. Motor; 203. Bracket; 204. Movable plate;

[0023] 301. First limiting bracket; 302. Guide rod; 303. Second limiting bracket; 304. Slide carriage; 305. Slide groove; 306. Rubber pad; 307. I-beam frame;

[0024] 501. Hydraulic cylinder; 502. Slide plate; 503. Pull rope; 504. Tension sensor. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0026] An instrument for testing the tensile bond strength of building mortar block adhesives, see [link / reference]. Figures 1 to 3 It includes a base 1, an adjustment mechanism 2 on one side of the base 1, a limiting component 3 on the right side of the adjustment mechanism 2, a mortar test block 4 sandwiched inside the limiting component 3, the mortar test block 4 being I-shaped, and a detection mechanism 5 on the right side of the limiting component 3.

[0027] The limiting component 3 includes a first limiting frame 301. A set of first limiting frames 301 are symmetrically arranged on one side of the adjusting mechanism 2. A set of guide rods 302 are fixed on the surface of the first limiting frame 301. A second limiting frame 303 is movably sleeved on the outside of the guide rods 302. A slide 304 is provided between the set of second limiting frames 303. A set of limiting grooves are symmetrically opened inside the slide 304. The second limiting frame 303 and the slide 304 form a locking structure through the limiting grooves. A sliding groove 305 is provided on the outer side of the bottom of the slide 304. A rubber pad 306 is glued inside the sliding groove 305. An I-shaped frame 307 is locked in the middle of the slide 304. This utility model effectively centers and limits I-shaped mortar test blocks 4 of different sizes through a set of adjustable first limiting frames 301 and a set of adjustable second limiting frames 303. Under the action of guide rod 302, the second limiting frame 303 adjusts simultaneously with the first limiting frame 301. The limiting groove opened in the slide 304 limits one side of the second limiting frame 303 without affecting the adjustment of the distance between the set of second limiting frames 303. The cooperation between the slide 304 and the slide groove 305 can effectively improve the movement stability of the slide 304. The rubber pad 306 bonded inside the slide groove 305 can provide corresponding buffering for the slide 304 at the moment the mortar test block 4 is pulled apart, reducing the impact force on the slide 304.

[0028] It is worth noting that the adjustment mechanism 2 includes a forward and reverse lead screw 201, which is mounted on one side inside the base 1. A motor 202 is connected to the end of the lead screw 201, and a bracket 203 is provided outside the motor 202. A set of movable plates 204 are symmetrically fitted on the surface of the lead screw 201. The lead screw 201 and the movable plates 204 are threaded together, and the movable plates 204 are fixedly connected to the first limiting frame 301. This invention effectively drives the lead screw 201 to rotate in both directions via the motor 202, thereby causing the set of movable plates 204 symmetrically fitted on the surface of the lead screw 201 to move away from or closer to each other. This changes the spacing between the first limiting frames 301 and the spacing between the second limiting frames 303, facilitating the central positioning of I-shaped mortar test blocks 4 of different sizes.

[0029] It is worth noting that the testing mechanism 5 includes a hydraulic cylinder 501, which is fixed to the middle of one side of the base 1. A sliding plate 502 is connected to the movable end of the hydraulic cylinder 501. A pull rope 503 is connected to the middle of the side of the sliding plate 502 away from the hydraulic cylinder 501. A tension sensor 504 is connected to the end of the pull rope 503 away from the sliding plate 502. The tension sensor 504 is connected to the I-beam frame 307. The horizontal central axes of the I-beam frame 307, tension sensor 504, pull rope 503, sliding plate 502, and hydraulic cylinder 501 coincide. In this invention, the tension sensor 504 acts on the middle of the slide 304 through the I-beam frame 307, improving the testing accuracy. Then, the hydraulic cylinder 501 effectively moves the sliding plate 502, facilitating the tension sensor 504 to test the tensile strength of the mortar sample block 4 inside the first limiting frame 301 and the second limiting frame 303, thereby obtaining the bonding strength data of the building adhesive.

[0030] Working principle: The I-shaped mortar test block 4, bonded with construction adhesive, is placed between the first limiting frame 301 and the second limiting frame 303. The motor 202 drives the forward and reverse lead screws 201 to rotate in both directions, causing a set of movable plates 204 symmetrically fitted on the surface of the lead screws 201 to move closer or further apart, thereby changing the spacing between the first limiting frames 301. Simultaneously, under the action of the guide rod 302, the spacing between the second limiting frames 303 can also be changed, facilitating the central positioning of the I-shaped mortar test block 4 of this size. The limiting grooves opened in the slide 304 limit one side of the second limiting frame 303 without affecting the spacing between the second limiting frames 303. Adjustment of the fit between the slide 304 and the slide groove 305 can improve the movement stability of the slide 304. The tension sensor 504 acts on the middle of the slide 304 through the I-beam frame 307, and then drives the slide plate 502 to move through the hydraulic cylinder 501, so that the tension sensor 504 can detect the tensile force of the mortar test block 4 inside the first limit frame 301 and the second limit frame 303 to obtain the bonding strength data of the building adhesive. The model of the tension sensor 504 is BCLM-1. The adhesive pad 306 bonded inside the slide groove 305 can buffer the slide 304 at the moment when the mortar test block 4 is pulled apart, reducing the impact force on the slide 304.

[0031] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A testing apparatus for the tensile bond strength of a building mortar block adhesive, comprising a base (1), characterised in that, The base (1) is provided with an adjustment mechanism (2) on one side, and a limiting component (3) is provided on the right side of the adjustment mechanism (2). A mortar test block (4) is sandwiched inside the limiting component (3). The mortar test block (4) is in the shape of an I-beam. A detection mechanism (5) is provided on the right side of the limiting component (3). The limiting component (3) includes a first limiting frame (301), a set of first limiting frames (301) are symmetrically arranged on one side of the adjusting mechanism (2), a set of guide rods (302) are fixed on the surface of the first limiting frame (301), a second limiting frame (303) is movably sleeved on the outside of the guide rods (302), a slide (304) is provided between the set of second limiting frames (303), a slide groove (305) is provided on the outer side of the bottom of the slide (304), a rubber pad (306) is glued inside the slide groove (305), and an I-shaped frame (307) is snapped into the middle of the slide (304).

2. A test apparatus for measuring tensile bond strength of a building mortar block adhesive according to claim 1, wherein The slide (304) has a set of symmetrical limiting grooves inside, and the second limiting frame (303) forms a locking structure with the slide (304) through the limiting grooves.

3. A test apparatus for measuring tensile bond strength of a masonry mortar joint according to claim 1, wherein the spacer member is a cylindrical spacer member having a diameter of 2.5 cm and a height of 2.5 cm. The adjustment mechanism (2) includes a positive and negative lead screw (201), which is mounted on one side inside the base (1). A motor (202) is connected to the end of the positive and negative lead screw (201), and a bracket (203) is provided outside the motor (202). A set of movable plates (204) are symmetrically fitted on the surface of the positive and negative lead screw (201).

4. A test apparatus for measuring tensile bond strength of a building mortar block adhesive as claimed in claim 3, wherein the said test apparatus is characterized by, The positive and negative lead screws (201) are threadedly connected to the movable plate (204), and the movable plate (204) is fixedly connected to the first limiting frame (301).

5. The instrument for testing the tensile bond strength of building mortar block adhesive as described in claim 1, characterized in that, The detection mechanism (5) includes a hydraulic cylinder (501), which is fixed inside the base (1) at the middle of one side. The movable end of the hydraulic cylinder (501) is connected to a sliding plate (502). A pull rope (503) is connected to the middle of the side of the sliding plate (502) away from the hydraulic cylinder (501). A tension sensor (504) is connected to the end of the pull rope (503) away from the sliding plate (502).

6. A test apparatus for measuring tensile bond strength of a masonry mortar joint according to claim 5, wherein The tension sensor (504) is connected to the I-frame (307), and the horizontal central axes of the I-frame (307), tension sensor (504), pull rope (503), slide plate (502) and hydraulic cylinder (501) coincide.

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