Simple portable concrete compressive strength manual detector

Abstract

The utility model relates to building material quality detection technical field discloses simple portable concrete compressive strength manual detector, including support seat, the pressure mechanism includes connecting gear, the outside rotation connection of connecting gear is in the outside front side of support seat, the outside front side fixed connection of connecting gear has handle, the outside of connecting gear and rotation gear is meshed connection each other, the outside rear side fixed connection of rotation gear has screw rod, the outside rotation connection of screw rod has pressure clamp block, the outside rotation connection of pressure clamp block has sleeve, the inside of pressure clamp block is equipped with T -shaped groove. In the utility model, the concrete test block is put into fixed clamp block, the clamp block angle is adjusted to make it firm fixation, and the corresponding relation of pre -calibrated pressure intensity is combined, and the concrete compressive strength is quickly obtained, and the operation is simple, and the energy consumption is reduced without relying on electric drive.

Description

Technical Field

[0001] This utility model relates to the field of building material quality testing technology, and in particular to a simple portable manual tester for concrete compressive strength. Background Technology

[0002] In construction engineering, timely and accurate testing of concrete compressive strength is crucial for controlling project quality. Currently, most mainstream concrete compressive strength testing equipment on the market consists of large-scale pressure testing machines. While these devices can provide accurate measurements, they have several limitations. First, they are typically bulky, requiring specialized installation and commissioning sites, and are inconvenient to transport, making them difficult to use effectively on construction sites, especially in remote areas. Second, these devices rely on electricity, making them unusable in locations with unstable or no power supply. Furthermore, the high purchase and maintenance costs of large-scale pressure testing machines hinder widespread adoption. Therefore, in small-scale construction projects or multi-point, decentralized testing scenarios, traditional equipment is insufficient to meet practical needs. There is an urgent need for a simple, portable, low-cost concrete compressive strength testing tool that does not rely on electricity to fill this market gap.

[0003] However, while some existing handheld detectors are portable, their poor structural design makes them difficult to operate and compromises their accuracy. Furthermore, some semi-automated testing devices, although reducing manual labor to some extent, still require external power and are relatively expensive, limiting their widespread use in many applications, especially in remote construction sites. Therefore, a simple, portable manual concrete compressive strength tester is proposed to address these issues. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a simple and portable manual concrete compressive strength tester, which aims to improve the problems of existing devices being large in size, complex in operation, dependent on electric drive, and costly, and also needing to improve in terms of accuracy and reliability.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A simple portable manual concrete compressive strength tester includes a support base, with connecting mechanisms on both outer sides of the support base, a pressure applying mechanism on the adjacent outer side of the support base, and a disassembly mechanism on the top of the support base. The pressure-applying mechanism includes a connecting gear, which is rotatably connected to the front outer side of the support base. A handle is fixedly connected to the front outer side of the connecting gear. A rotating gear is rotatably connected to the front outer side of the support base. The connecting gear and the rotating gear are meshed with each other. A screw is fixedly connected to the rear outer side of the rotating gear. A pressure-applying clamp is rotatably connected to the outside of the screw. A sleeve is rotatably connected to the outside of the pressure-applying clamp. A fixing component for fixing is threaded to the rear outer side of the support base. A T-shaped groove is opened inside the pressure-applying clamp. An anti-slip component for anti-slip is fixedly connected to the bottom of the support base. The above technical solution involves connecting a screw to a manual operating handle, with a gear transmission structure between the handle and the screw to increase torque, allowing the operator to easily apply greater pressure. A graduated sleeve is nested on the screw, with the sleeve threaded into the screw. As the screw rotates, the sleeve moves along the screw, and its positional changes correspond to different pressure values. After calibration, the equivalent pressure can be directly read.

[0006] As a further description of the above technical solution: The fixing assembly includes a bolt, the external thread of which is connected to the rear side of the support base, and a fixing clamp is connected to the external thread of the bolt. The external thread of the bolt is sequentially connected to the rear side of the support base and the outside of the fixing clamp. The support base is composed of two identical shapes, and the outside of the fixing clamp is inside the two identical support bases. The above technical solution allows for the fixation of test blocks using clamping blocks, and the bolts allow for different angle adjustments to secure test blocks of varying sizes.

[0007] As a further description of the above technical solution: The anti-slip component includes multiple anti-slip feet, the external parts of which are fixedly connected to the bottom of the support base, and rubber pads are fixedly connected to the bottom of the multiple anti-slip feet. The above technical solution involves installing height-adjustable anti-slip feet at the bottom of the frame to ensure equipment stability during testing, while the rubber pads increase friction.

[0008] As a further description of the above technical solution: The connecting mechanism includes multiple positioning blocks, which are externally fixedly connected to both sides of the support base. Positioning grooves are slidably connected to the outside of the multiple positioning blocks, and connecting rods are fixedly connected to the outside of the positioning grooves. The above technical solution allows for rapid assembly by using a connecting rod to engage the positioning groove with the fixed blocks on both sides of the support base, while also providing good support capabilities.

[0009] As a further description of the above technical solution: The disassembly mechanism includes two sliders, the two sliders are externally slidably connected to the top of the support base, i.e., the side away from the fixed clamping block, and a positioning rod is fixedly connected to the adjacent side of the two sliders. The above technical solution allows the positioning rod to slide when the slider slides.

[0010] As a further description of the above technical solution: The support base is slidably connected to an opening and closing plate on its outer front side. Positioning holes are provided on both outer sides of the opening and closing plate. The two positioning rods are slidably connected to the inside of the two positioning holes respectively. The above technical solution allows for the rapid removal and collection of the internal screw by sliding the opening and closing plate out.

[0011] As a further description of the above technical solution: The screw and the pressure clamp are connected by the T-slot, and the outside of the pressure clamp is on the sleeve, i.e., on the outer rear side near the support base; The above technical solution uses a screw to move the pressure clamping block, ensuring that no lateral deviation occurs when transmitting torque.

[0012] As a further description of the above technical solution: The sleeve has graduations on its outside, and the sleeve is connected to the screw via a fine thread. When the screw rotates, the sleeve moves along the screw.

[0013] The above technical solution is designed to facilitate the observation of different pressure values, allowing staff to observe and record them intuitively.

[0014] This utility model has the following beneficial effects: 1. In this utility model, the concrete specimen to be tested is placed in a fixed clamping block, the angle of the clamping block is adjusted to make it firmly fixed, and then the handle is held and slowly rotated clockwise. The rotational motion is converted into linear motion through the gear transmission mechanism, pushing the pressure clamping block to apply pressure to the concrete specimen. The pressure is applied continuously until the maximum pressure value is reached, and the position reading of the scale sleeve at this moment is recorded. The handle is rotated counterclockwise to release the pressure, the specimen is taken out, the equipment is cleaned, and the initial state is restored. Based on the recorded data and combined with the pre-calibrated pressure-intensity correspondence table, the actual compressive strength of the concrete is calculated. Its design can realize the application of high pressure to the concrete specimen through simple manual operation, and the pressure value is displayed intuitively by mechanical scale. Combined with the pre-calibrated pressure-intensity correspondence, the compressive strength of the concrete can be quickly obtained. The operation is simple, does not rely on electric drive, reduces energy consumption, and lowers the cost of use.

[0015] 2. In this utility model, the positioning rod can be accurately engaged in the positioning hole by sliding the slider, thereby ensuring the stable fixation of the opening and closing plate, avoiding displacement during operation, and improving the safety and reliability of use. At the same time, when the slider drives the positioning rod to slide out of the positioning hole, the opening and closing plate can be quickly disassembled, making it easy to remove the screw in time, realizing the maintenance of the equipment and the replacement of components, saving operation time. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of the simple portable manual concrete compressive strength tester proposed in this utility model; Figure 2 This is a schematic diagram of the rotating gear in the simple portable manual concrete compressive strength tester proposed in this utility model. Figure 3 This is a schematic diagram of the sleeve of the simple portable manual concrete compressive strength tester proposed in this utility model. Figure 4 This is a schematic diagram of the T-shaped groove of the simple portable manual concrete compressive strength tester proposed in this utility model; Figure 5 This is a schematic diagram of the opening and closing plate of the simple portable manual concrete compressive strength tester proposed in this utility model.

[0017] Legend: 1. Support base; 2. Connecting mechanism; 21. Positioning block; 22. Positioning groove; 23. Connecting rod; 3. Pressing mechanism; 31. Handle; 32. Connecting gear; 33. Rotating gear; 34. Pressing clamp; 35. Screw; 36. Bolt; 37. T-slot; 38. Fixing clamp; 39. Sleeve; 310. Anti-slip foot; 311. Rubber pad; 4. Disassembly mechanism; 41. Slider; 42. Positioning rod; 43. Opening and closing plate; 44. Positioning hole. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Reference Figures 2 to 4 An embodiment of this utility model is provided: a simple portable manual concrete compressive strength tester, including a support base 1, connecting mechanisms 2 on both sides of the outside of the support base 1, a pressure applying mechanism 3 on the adjacent side of the outside of the support base 1, and a disassembly mechanism 4 on the top of the support base 1. The pressure applying mechanism 3 includes a connecting gear 32, which is rotatably connected to the front outer side of the support base 1. A handle 31 is fixedly connected to the front outer side of the connecting gear 32. A rotating gear 33 is rotatably connected to the front outer side of the support base 1. The connecting gear 32 and the rotating gear 33 are meshed with each other, with a gear ratio of 4:1, thereby achieving a torque amplification effect. By rotating the handle 31, the connecting gear 32 rotates, which simultaneously transmits power to the outside of the rotating gear 33. A rotating gear 33 is fixedly connected to the rear outer side of its outer side. The screw 35 is designed to provide good guiding capability. A pressure clamp 34 is rotatably connected to the outside of the screw 35, designed to provide good pressure application capability. A connecting gear 32 drives a rotating gear 33 to rotate, causing the screw 35 to rotate. The clamp 34 can then move forward. A sleeve 39 is rotatably connected to the outside of the pressure clamp 34. The sleeve 39 has graduations on its exterior and engages with the screw 35 via a fine-pitch thread. When the screw 35 rotates, the sleeve 39 moves along the screw 35, and its positional changes correspond to different pressure values. After calibration, the equivalent pressure can be directly read with a resolution of up to 0.1 MPa. A fixing component, including a bolt 36, is threaded to the outer rear side of the support base 1, providing good fixing capability. The bolt 36 is threaded to the outer rear side of the support base 1. The bolt 36 has an external threaded connection to a fixing clamp 38, designed to secure the concrete to be inspected. The bolt 36 allows for angle adjustment to accommodate different sizes. The bolt 36 is sequentially threaded onto the outer rear side of the support base 1 and the outer side of the fixing clamp 38. The support base 1 consists of two identical shapes, with the fixing clamp 38 located inside the two identical support bases. The pressure clamp 34 has a T-slot 37 inside, ensuring torque transmission via the screw 35 drive mechanism. There will be no lateral displacement. The bottom of the support base 1 is fixedly connected to an anti-slip component for anti-slip. The anti-slip component includes multiple anti-slip feet 310 to ensure the stability of the equipment during testing. The external parts of the multiple anti-slip feet 310 are fixedly connected to the bottom of the support base 1. The bottom of the multiple anti-slip feet 310 is fixedly connected to a rubber pad 311, which is designed to increase friction and prevent slippage. The screw 35 and the pressure clamping block 34 are connected through a T-slot 37. The external part of the pressure clamping block 34 is on the sleeve 39, that is, on the rear side of the outside near the support base 1.

[0020] Specifically, the concrete specimen to be tested is placed in the fixed clamp 38, the angle of the clamp is adjusted to make it firmly fixed, the manual operating handle 31 is activated, and the rotational motion is converted into linear motion through the gear transmission mechanism, pushing the pressure clamp to apply pressure to the concrete specimen. During the pressure application, the screw 35 drives the scale sleeve 39 to move along the screw 35. By observing the position change of the scale sleeve 39, the corresponding equivalent pressure value can be directly read. When the preset maximum pressure value is reached, the pressure application is stopped, the reading value is recorded, and the actual compressive strength of the concrete is calculated by combining it with the pre-calibrated pressure strength correspondence table. After the test is completed, the handle 31 is rotated back in the opposite direction to release the pressure, the specimen is taken out, and the test is prepared for the next test.

[0021] Reference Figure 1 and Figure 2 The connecting mechanism 2 includes multiple positioning blocks 21, which are designed to provide good positioning capability. The multiple positioning blocks 21 are externally fixedly connected to the outer sides of the support base 1. The multiple positioning blocks 21 are externally slidably connected to positioning grooves 22. The positioning grooves 22 can be engaged inside the positioning blocks 21 by the support of the positioning blocks 21. The positioning grooves 22 are externally fixedly connected to connecting rods 23, which are designed to fix the two sides of the support base 1 composed of two parts.

[0022] Specifically, the connecting rod 23 drives the positioning groove 22 to engage with the outside of the positioning block 21, so that the connecting rod 23 can keep the support seat 1 stable and prevent displacement during processing.

[0023] Reference Figure 3 and Figure 5The disassembly mechanism 4 includes two sliders 41, which are designed to provide good sliding ability. The two sliders 41 are externally slidably connected to the top of the support base 1, i.e., the side away from the fixed clamping block 38. The adjacent sides of the two sliders 41 are fixedly connected to positioning rods 42. The positioning rods 42 are designed to provide good positioning ability. When the sliders 41 slide, they can drive the positioning rods 42 to slide. The front side of the support base 1 is slidably connected to an opening and closing plate 43. The opening and closing plate 43 is designed to open and close at the top of the support base 1, so that it can be opened to facilitate the disassembly and removal of the screw 35. Positioning holes 44 are provided on both sides of the outer side of the opening and closing plate 43. The outer sides of the two positioning rods 42 are slidably connected to the inside of the two positioning holes 44, which can prevent the opening and closing plate 43 from shifting during processing.

[0024] Specifically, the slider 41 drives the positioning rod 42 to engage inside the positioning hole 44, thereby fixing the opening and closing plate 43. When the slider 41 drives the positioning rod 42 to slide out of the positioning hole 44, the opening and closing plate 43 can be slid upwards and removed. This design allows for quick disassembly of the screw 35, making it easy to remove and saving space.

[0025] Working Principle: First, the concrete specimen to be tested is placed in the fixing block 38, and the angle of the clamp is adjusted according to the size of the specimen to ensure that the specimen is firmly fixed and to prevent movement during the pressure application process. Next, the operator activates the manual operating handle 31. The rotation of the handle 31 converts the rotational motion into linear motion through the gear transmission mechanism connecting the gear 32 and the rotating gear 33, thereby driving the screw 35 connected to the rotating gear 33 to rotate. As the screw 35 rotates, the pressure clamp 34 moves forward, applying pressure to the concrete specimen. During the pressure application process, the screw 35 drives the sleeve 39 to move along the screw 35, and the scale on the outside of the sleeve 39 displays the applied pressure value. The operator observes the positional change of the sleeve 39 to obtain the corresponding equivalent pressure value. When the preset maximum pressure value is reached, the operator stops applying pressure and records the reading at this time. By combining the pre-calibrated pressure strength correspondence table, the operator can calculate the actual compressive strength of the concrete. After the test is completed, the operator rotates handle 31 in the opposite direction to release the pressure applied by the pressure clamp 34, and then removes the test block to prepare for the next test. At the same time, through the cooperation of positioning block 21 and connecting rod 23, the support base 1 is ensured to remain stable throughout the testing process, preventing the equipment from shifting during the pressure application process, thereby ensuring the accuracy of the test results; When the concrete compressive strength tester needs to be stored, the operator first moves the two sliders 41 backward. This causes the sliders 41 to slide and move the positioning rod 42 connected to their adjacent side in the corresponding direction. The positioning rod 42 then slides out of the positioning hole 44. Next, the operator slides the opening and closing plate 43 upward to open and remove the screw 35. This operation allows the screw 35 to be quickly and easily removed, simplifying the disassembly process and saving space. When the opening and closing plate 43 needs to be fixed again, the operator simply places it correctly so that the positioning rod 42 re-engages into the positioning hole 44, thus securing the opening and closing plate 43 in place and ensuring its stability in subsequent use.

[0026] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A simple portable manual concrete compressive strength tester, including a support base (1), characterized in that: The support base (1) is provided with connecting mechanisms (2) on both sides of its exterior, and with a pressure applying mechanism (3) on the adjacent side of its exterior. The support base (1) is provided with a disassembly mechanism (4) on its top. The pressure applying mechanism (3) includes a connecting gear (32), which is rotatably connected to the front of the support base (1). A handle (31) is fixedly connected to the front of the connecting gear (32). A rotating gear (33) is rotatably connected to the front of the support base (1). The connecting gear (32) and the rotating gear (33) are meshed with each other. A screw (35) is fixedly connected to the rear of the rotating gear (33). A pressure clamp (34) is rotatably connected to the outside of the screw (35). A sleeve (39) is rotatably connected to the outside of the pressure clamp (34). A fixing component for fixing is threaded to the rear of the support base (1). A T-shaped groove (37) is opened inside the pressure clamp (34). An anti-slip component for anti-slip is fixedly connected to the bottom of the support base (1).

2. The simple portable manual concrete compressive strength tester according to claim 1, characterized in that: The fixing assembly includes a bolt (36), the external thread of which is connected to the rear side of the support base (1), and the external thread of which is connected to a fixing clamp (38). The external thread of the bolt (36) is sequentially connected to the rear side of the support base (1) and the outside of the fixing clamp (38). The support base (1) is composed of two identical shapes, and the outside of the fixing clamp (38) is inside the two identical support bases (1).

3. The simple portable manual concrete compressive strength tester according to claim 1, characterized in that: The anti-slip assembly includes multiple anti-slip feet (310), the external parts of which are fixedly connected to the bottom of the support base (1), and rubber pads (311) are fixedly connected to the bottom of the multiple anti-slip feet (310).

4. The simple portable manual concrete compressive strength tester according to claim 1, characterized in that: The connecting mechanism (2) includes multiple positioning blocks (21), which are externally fixedly connected to the outer sides of the support base (1). The external sides of the multiple positioning blocks (21) are slidably connected to positioning grooves (22), and the external sides of the positioning grooves (22) are fixedly connected to connecting rods (23).

5. The simple portable manual concrete compressive strength tester according to claim 2, characterized in that: The disassembly mechanism (4) includes two sliders (41), the two sliders (41) are externally slidably connected to the top of the support base (1), i.e., the side away from the fixed clamp (38), and a positioning rod (42) is fixedly connected to the adjacent side of the two sliders (41).

6. The simple portable manual concrete compressive strength tester according to claim 5, characterized in that: The support base (1) is slidably connected to the front side of the opening and closing plate (43). The opening and closing plate (43) has positioning holes (44) on both sides of its outer surface. The two positioning rods (42) are slidably connected to the inside of the two positioning holes (44).

7. The simple portable manual concrete compressive strength tester according to claim 1, characterized in that: The screw (35) and the pressure clamp (34) are connected by the T-slot (37), and the outside of the pressure clamp (34) is on the sleeve (39), that is, on the outer rear side near the support (1).

8. The simple portable manual concrete compressive strength tester according to claim 1, characterized in that: The sleeve (39) has a scale on its outside. The sleeve (39) and the screw (35) are connected by a fine thread. When the screw (35) rotates, the sleeve (39) moves along the screw (35).

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