Cement hardness detector

Abstract

The utility model belongs to the technical field of constructional engineering detection, and discloses a cement hardness detector which comprises a fixed seat and a supporting frame, the supporting frame is fixedly connected to the top end of the fixed seat, a movable frame is slidably connected to the interior of the supporting frame, a rebound apparatus is arranged in the movable frame, and the rebound apparatus is fixedly connected to the top end of the fixed seat. A measuring assembly is arranged between the movable frame and the supporting frame, a base is arranged at the bottom end of the fixed seat, and a leveling assembly is arranged between the base and the fixed seat. By means of the measuring assembly, the rebound apparatus can be conveniently and rapidly installed and fixed, the detection efficiency can be conveniently improved, meanwhile, the height of the rebound apparatus can be conveniently adjusted, on-site measurement and use are facilitated, by means of the leveling assembly, the impact direction of the rebound apparatus is adjusted to be perpendicular to the position to be detected, and therefore the detection accuracy is improved.

Description

Technical Field

[0001] This utility model relates to the field of building engineering testing technology, and in particular to a cement hardness tester. Background Technology

[0002] Cement, also known as cement, is a powdery hydraulic inorganic binder that hardens and solidifies when mixed with water. It is usually not used alone, but rather combined with sand to form mortar or concrete. Cement is the most commonly used material in construction. After mixing, cement needs to be tested for hardness to determine whether it has sufficient load-bearing capacity.

[0003] Chinese utility model patent with publication number CN202122023407.4 discloses a hardness testing device for cured cement in building testing, including a fixed base plate, a testing mechanism, a left fixing mechanism, a right fixing mechanism and a limiting mechanism. The testing mechanism is located in the middle of the upper part of the fixed base plate, the left fixing mechanism is located on the left side of the upper part of the fixed base plate, the spring groove is fixedly installed in the lower part of the inside of the testing column, and the testing rod is movably installed inside the movable groove and the spring groove.

[0004] Regarding the aforementioned related technologies, the inventors believe that the following defects exist: it is necessary to sample the cement to be tested, and the sampling process may damage the sample, resulting in inaccurate test results. Furthermore, when the impact needle comes into contact with the cement surface, it will tilt to a certain extent, making it impossible to always maintain perpendicularity to the cement surface, which can easily lead to errors in the measurement values. Utility Model Content

[0005] To address the aforementioned problems, this invention provides a cement hardness tester.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a cement hardness tester, including a fixed base and a support frame, wherein the support frame is fixedly connected to the top of the fixed base, a movable frame is slidably connected inside the support frame, a rebound hammer is installed inside the movable frame, a measuring component is installed between the movable frame and the support frame, a base is installed at the bottom of the fixed base, and a leveling component is installed between the base and the fixed base.

[0007] By adopting the above technical solution and using the set measurement components, the rebound hammer can be quickly installed and fixed, which can improve the efficiency of the test. At the same time, the height of the rebound hammer can be easily adjusted, which is convenient for on-site measurement. The set leveling components can be used to adjust the impact direction of the rebound hammer to be perpendicular to the position to be tested, thereby improving the accuracy of the test.

[0008] Furthermore, a rectangular opening is provided in the center of the fixed base, and horizontal bubble levels are installed on the outer walls at both ends of the fixed base.

[0009] By adopting the above technical solution, the opening facilitates the up-and-down movement of the rebound hammer, and the bubble level facilitates the observation of whether the detector is level with the position to be tested, while also providing a reference for subsequent leveling.

[0010] Furthermore, the measuring component includes a screw hole formed on the top of the support frame, a first screw is threadedly connected to the inside of the screw hole, a handle is fixedly connected to the top end of the first screw, a fixed frame is rotatably connected to the bottom end of the first screw, a positioning sleeve is fixedly connected to the bottom of the fixed frame, sliding grooves are formed on both sides of the inner wall of the support frame, sliders are slidably connected inside the sliding grooves, the sliders are fixedly connected to the two end side walls of the movable frame, a threaded sleeve is fixedly connected inside the movable frame, and a limit sleeve is threadedly connected inside the threaded sleeve.

[0011] By adopting the above technical solution, the top of the rebound hammer is inserted into the positioning sleeve along the threaded sleeve, and then the limiting sleeve is threadedly connected to the threaded sleeve. The limiting sleeve moves along the threaded sleeve and presses the rebound hammer against the limiting sleeve, thus facilitating quick installation of the rebound hammer. By turning the handle, the handle drives the first screw to rotate. The first screw rotates along the threaded hole and pushes the fixed frame to move down. The fixed frame pushes the movable frame to move down along the slide groove under the action of the slider. The movable frame drives the hammer head of the rebound hammer to pass through the opening. The rebound hammer is used to detect the position to be tested, which is convenient and quick for testing.

[0012] Furthermore, the top of the movable frame is fixedly connected to the bottom of the fixed frame, the top of the rebound spring is sleeved inside the positioning sleeve at the bottom of the fixed frame, the bottom of the rebound spring is sleeved inside the limiting sleeve, the hammer of the rebound spring penetrates through the bottom of the limiting sleeve, and the outer diameter of the rebound spring is smaller than the inner diameter of the threaded sleeve.

[0013] By adopting the above technical solution, the rebound spring can be quickly installed by using the limiting sleeve, positioning sleeve and threaded sleeve.

[0014] Furthermore, the leveling assembly includes a first connecting seat installed on both sides of the bottom end of the fixed base. The first connecting seat is rotatably connected to one end of a first connecting rod and one end of a third connecting rod. The other end of the first connecting rod is rotatably connected to a first threaded seat. The other end of the third connecting rod is rotatably connected to a second threaded seat. One end of the first threaded seat is rotatably connected to one end of the second connecting rod. One end of the second threaded seat is rotatably connected to one end of a fourth connecting rod. The other ends of both the second and fourth connecting rods are rotatably connected to a second connecting seat. The second connecting seat is installed on the top of the base. The first and second threaded seats are internally threaded with a second screw.

[0015] By adopting the above technical solution, when the bubble is not in the middle of the water body, the base is not horizontal. By rotating the second screw, the second screw drives the first threaded seat and the second threaded seat to move towards each other. The first threaded seat drives the first connecting rod and the third connecting rod to rotate, and the second threaded seat drives the second connecting rod and the fourth connecting rod to rotate, thereby adjusting the distance between the first connecting seat and the second connecting seat. The first connecting seat drives one side of the fixed seat to move up and down, and the fixed seat drives the bubble in the horizontal bubble to move to the middle of the water body, thereby making the fixed seat horizontal. Then, the impact direction of the rebound hammer is perpendicular to the position to be measured, thereby improving the accuracy of the detection.

[0016] Furthermore, the first and third connecting rods are located at both ends of the first threaded seat, and the second and fourth connecting rods are located at both ends of the second threaded seat. Both the first and second connecting seats are U-shaped seats, and the threads inside the first threaded seat are opposite to the threads inside the second threaded seat.

[0017] By adopting the above technical solution, the first link, second link, third link and fourth link are set to facilitate the synchronous movement of the first threaded seat and the second threaded seat.

[0018] In summary, this utility model has the following beneficial effects:

[0019] 1. In this application, the top of the rebound hammer is inserted into the positioning sleeve along the threaded sleeve, and then the limiting sleeve is threadedly connected to the threaded sleeve. The limiting sleeve moves along the threaded sleeve and presses the rebound hammer against the limiting sleeve, thereby facilitating the quick installation of the rebound hammer.

[0020] 2. In this application, by rotating the handle, the handle drives the first screw to rotate, the first screw rotates along the screw hole and pushes the fixed frame to move down, the fixed frame pushes the movable frame to move down along the slide groove under the action of the slider, and the movable frame drives the hammer of the rebound hammer to pass through the opening, and the rebound hammer detects the position to be tested;

[0021] 3. In this application, the horizontality of the fixed base is observed by setting horizontal bubbles at both ends of the fixed base. According to the position of the bubble in the water, when the bubble is in the middle of the water, the base is horizontal; when the bubble is not in the middle of the water, the base is not horizontal. By rotating the second screw, the second screw drives the first threaded seat and the second threaded seat to move towards each other. The first threaded seat drives the first connecting rod and the third connecting rod to rotate, and the second threaded seat drives the second connecting rod and the fourth connecting rod to rotate, thereby adjusting the distance between the first connecting seat and the second connecting seat. The first connecting seat drives one side of the fixed base to move up and down. The fixed base drives the bubble in the horizontal bubble to move to the middle of the water, thereby making the fixed base horizontal. This makes the impact direction of the rebound hammer perpendicular to the position to be measured, thereby improving the accuracy of the detection. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0023] Figure 2 This is a cross-sectional structural schematic diagram of an embodiment of the present utility model;

[0024] Figure 3 This is a three-dimensional structural diagram of the leveling component in an embodiment of this utility model.

[0025] In the diagram: 1. Fixed base; 11. Opening; 12. Bulb spirit level; 2. Support frame; 3. Movable frame; 4. Measuring component; 41. Screw hole; 42. First screw; 43. Handle; 44. Fixed frame; 45. Slider; 46. Slide groove; 47. Threaded sleeve; 48. Positioning sleeve; 49. Limiting sleeve; 5. Rebound spring; 6. Base; 7. Leveling component; 71. First connecting seat; 72. First connecting rod; 73. Second connecting rod; 74. Third connecting rod; 75. Fourth connecting rod; 76. Second connecting seat; 77. First threaded seat; 78. Second screw; 79. Second threaded seat. Detailed Implementation

[0026] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0027] like Figure 1-3 As shown in the figure, this application discloses a cement hardness tester, including a fixed base 1 and a support frame 2. The support frame 2 is fixedly connected to the top of the fixed base 1. A movable frame 3 is slidably connected inside the support frame 2. A rebound hammer 5 is installed inside the movable frame 3. A measuring component 4 is installed between the movable frame 3 and the support frame 2. A base 6 is installed at the bottom of the fixed base 1. A leveling component 7 is installed between the base 6 and the fixed base 1.

[0028] The fixed base 1 has a rectangular opening 11 at its center, and spirit levels 12 are installed on both outer walls of the fixed base 1. The measuring component 4 includes a screw hole 41 on the top of the support frame 2, a first screw 42 is threaded into the screw hole 41, a handle 43 is fixedly connected to the top of the first screw 42, a fixed frame 44 is rotatably connected to the bottom of the first screw 42, a positioning sleeve 48 is fixedly connected to the bottom of the fixed frame 44, and a sliding groove 46 is provided on both sides of the inner wall of the support frame 2. An internal sliding block 45 is fixedly connected to the two end side walls of the movable frame 3. A threaded sleeve 47 is fixedly connected inside the movable frame 3, and a limiting sleeve 49 is threadedly connected inside the threaded sleeve 47. The top of the movable frame 3 is fixedly connected to the bottom of the fixed frame 44. The top of the rebound spring 5 is fitted inside the positioning sleeve 48 at the bottom of the fixed frame 44. The bottom of the rebound spring 5 is fitted inside the limiting sleeve 49. The hammer of the rebound spring 5 penetrates the bottom of the limiting sleeve 49. The outer diameter of the rebound spring 5 is smaller than that of the threaded sleeve 47. The inner diameter; the leveling assembly 7 includes a first connecting seat 71 installed on both sides of the bottom end of the fixed base 1. The first connecting seat 71 is rotatably connected to one end of a first connecting rod 72 and a third connecting rod 74. The other end of the first connecting rod 72 is rotatably connected to a first threaded seat 77. The other end of the third connecting rod 74 is rotatably connected to a second threaded seat 79. One end of the first threaded seat 77 is rotatably connected to one end of a second connecting rod 73. One end of the second threaded seat 79 is rotatably connected to one end of a fourth connecting rod 75. The other ends of the second connecting rod 73 and the fourth connecting rod 75 are both rotatably connected to a second connecting seat 76. The second connecting seat 76 is installed on the top of the base 6. The first threaded seat 77 and the second threaded seat 79 are internally threaded with a second screw 78. The first connecting rod 72 and the third connecting rod 74 are located at both ends of the first threaded seat 77. The second connecting rod 73 and the fourth connecting rod 75 are located at both ends of the second threaded seat 79. The first connecting seat 71 and the second connecting seat 76 are both U-shaped seats. The internal threads of the first threaded seat 77 are opposite to the internal threads of the second threaded seat 79.

[0029] The working principle of the cement hardness tester in this embodiment is as follows: Before testing, the device is placed at the test position via the base 6. The horizontal bubble 12 at both ends of the fixed base 1 is used to observe whether the fixed base 1 is horizontal. Based on the position of the bubble in the water, when the bubble is in the middle of the water, the base 6 is horizontal; when the bubble is not in the middle of the water, the base 6 is not horizontal. By rotating the second screw 78, the second screw 78 drives the first threaded seat 77 and the second threaded seat 79 to move towards each other. The first threaded seat 77 drives the first connecting rod 72 and the third connecting rod 74 to rotate, and the second threaded seat 79 drives the second connecting rod 73 and the fourth connecting rod 75 to rotate, thereby adjusting the distance between the first connecting seat 71 and the second connecting seat 76. The first connecting seat 71 drives one side of the fixed base 1 to move up and down, and the fixed base 1 drives the water... The air bubble in the flat bubble 12 moves to the middle of the water, so that the fixed base 1 is in a horizontal position, and then the impact direction of the rebound hammer 5 is perpendicular to the position to be tested, thereby improving the accuracy of the test. Then, the top of the rebound hammer 5 is inserted into the positioning sleeve 48 along the threaded sleeve 47, and then the limiting sleeve 49 is threadedly connected to the threaded sleeve 47. The limiting sleeve 49 moves along the threaded sleeve 47 and presses the rebound hammer 5 against the limiting sleeve 49, thereby facilitating the quick installation of the rebound hammer 5. By turning the handle 43, the handle 43 drives the first screw 42 to rotate. The first screw 42 rotates along the screw hole 41 and pushes the fixed frame 44 to move down. The fixed frame 44 pushes the movable frame 3 to move down along the slide groove 46 under the action of the slider 45. The movable frame 3 drives the hammer head of the rebound hammer 5 to pass through the opening 11, and the rebound hammer 5 is used to test the position to be tested.

[0030] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A cement hardness detector comprising a fixed base (1) and a support frame (2), characterized in that, The support frame (2) is fixedly connected to the top end of the fixed seat (1), the inside of the support frame (2) is slidably connected with a movable frame (3), the inside of the movable frame (3) is provided with a rebound instrument (5), the movable frame (3) and the support frame (2) are provided with a measuring assembly (4), the bottom end of the fixed seat (1) is provided with a base (6), and the base (6) and the fixed seat (1) are provided with a leveling assembly (7).

2. The cement hardness detector according to claim 1, characterized in that: The inside of the fixed seat (1) is provided with a rectangular opening (11) in the center, and the outer side walls of the two ends of the fixed seat (1) are both provided with a level bubble (12).

3. The cement hardness detector according to claim 1, characterized in that: The measuring assembly (4) comprises a threaded hole (41) formed in the top of the support frame (2), a first screw rod (42) is screwed into the threaded hole (41), a handle (43) is fixedly connected to the top end of the first screw rod (42), a fixed frame (44) is rotatably connected to the bottom end of the first screw rod (42), a positioning sleeve (48) is fixedly connected to the bottom of the fixed frame (44), sliding grooves (46) are formed in the inner walls of the support frame (2), sliding blocks (45) are slidably connected in the sliding grooves (46), the sliding blocks (45) are fixedly connected to the two end side walls of the movable frame (3), a threaded sleeve (47) is fixedly connected to the inside of the movable frame (3), and a limiting sleeve (49) is screwed into the threaded sleeve (47).

4. The cement hardness detector according to claim 3, characterized in that: The top end of the movable frame (3) is fixedly connected to the bottom end of the fixed frame (44), the top of the rebound instrument (5) is sleeved in the inside of the positioning sleeve (48) of the bottom end of the fixed frame (44), the bottom of the rebound instrument (5) is sleeved in the inside of the limiting sleeve (49), the hammer head of the rebound instrument (5) penetrates through the bottom end of the limiting sleeve (49), and the outer diameter of the rebound instrument (5) is smaller than the inner diameter of the threaded sleeve (47).

5. The cement hardness detector according to claim 1, characterized in that: The leveling assembly (7) comprises first connecting seats (71) mounted on the two sides of the bottom end of the fixed seat (1), first connecting seats (71) are rotatably connected with one end of the first connecting rod (72) and the third connecting rod (74) in the inside, the other end of the first connecting rod (72) is rotatably connected with the first threaded seat (77), the other end of the third connecting rod (74) is rotatably connected with the second threaded seat (79), one end of the first threaded seat (77) is rotatably connected with one end of the second connecting rod (73), one end of the second threaded seat (79) is rotatably connected with one end of the fourth connecting rod (75), the other ends of the second connecting rod (73) and the fourth connecting rod (75) are rotatably connected with the second connecting seat (76), the second connecting seat (76) is mounted on the top end of the base (6), and the inside of the first threaded seat (77) and the second threaded seat (79) is screwed with the second screw rod (78).

6. The cement hardness detector according to claim 5, characterized in that: The first connecting rod (72) and the third connecting rod (74) are located at two ends of the first threaded seat (77), the second connecting rod (73) and the fourth connecting rod (75) are located at two ends of the second threaded seat (79), the first connecting seat (71) and the second connecting seat (76) are both U-shaped seats, and the thread inside the first threaded seat (77) is opposite to the thread inside the second threaded seat (79).

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