Compression resistance detection equipment for concrete detection in high saline-alkaline environment
By simulating a high-salt-alkali environment in a confined space, concrete testing equipment has solved the problems of inaccurate testing and inconvenient operation of existing equipment in high-salt-alkali environments, achieving safe and efficient testing results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XINJIANG CONSTR RES INST (CO LTD)
- Filing Date
- 2025-05-27
- Publication Date
- 2026-05-08
AI Technical Summary
Existing concrete compressive strength testing equipment is difficult to accurately simulate the actual effects of concrete in high saline-alkali environments, and poses safety hazards and is inconvenient to operate.
A compressive strength testing device for concrete testing in high-salt-alkali environments was designed. It uses a closed space to simulate a high-salt-alkali environment, and a motor drives a screw to slide a plate, which is combined with an atomizing nozzle to spray a salt and alkali solution. An anti-corrosion coating is set to protect the internal components of the device, so as to achieve automated operation and safety.
It enables efficient simulation of high-salt and alkaline environments in a confined space, improving detection results, avoiding operator contact with saline and alkaline solutions, and ensuring the reliability and safety of the equipment.
Smart Images
Figure CN224216464U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of concrete testing equipment, specifically a compressive strength testing device for concrete testing in high salinity and alkalinity environments. Background Technology
[0002] In certain geographical areas, such as saline-alkali lands, coastal regions, and areas surrounding roads where de-icing salt is used, concrete structures are exposed to high salinity and alkalinity environments for extended periods. The salts and other chemicals in these environments corrode concrete, altering its structural properties, reducing its compressive strength and durability, and severely impacting the service life and safety of concrete structures. Therefore, testing the compressive strength of concrete in high salinity and alkalinity environments is of significant practical importance.
[0003] Currently, most existing concrete compressive strength testing equipment operates under conventional conditions, making it difficult to accurately simulate the actual impact of high-salt-alkali environments on concrete. Some testing equipment capable of simulating saline-alkali environments requires operators to manually place and remove concrete blocks from the testing device. During this process, the highly corrosive nature of the saline-alkali solution poses a significant safety hazard, as operators' hands are easily exposed to the solution and susceptible to injury. Furthermore, the inconvenience of placing and removing concrete blocks in existing equipment may negatively impact testing efficiency.
[0004] Therefore, it is necessary to modify it to simulate a high-salt-alkali environment in a closed space to test the concrete, thereby improving the testing effect and making it easier to remove and put in the tested concrete blocks, avoiding accidental contact with salt and alkali solutions by workers and causing damage. Utility Model Content
[0005] To address the problems mentioned in the background art, the purpose of this utility model is to provide a compressive strength testing device for concrete testing in high-salt-alkali environments. This device simulates a high-salt-alkali environment in a closed space to test concrete, improving testing effectiveness. It also facilitates the removal and placement of concrete blocks, preventing accidental contact with saline-alkali solutions and potential damage to operators. This solves the problem that most existing concrete compressive strength testing devices operate in conventional environments, making it difficult to accurately simulate the actual impact of high-salt-alkali environments on concrete. Furthermore, some testing devices with saline-alkali environment simulation capabilities require operators to manually place and remove concrete blocks from the testing device, which is highly corrosive and can easily damage the operator's hands.
[0006] This utility model provides the following technical solution: a compressive strength testing device for concrete testing in high salinity and alkali environments, comprising a testing box, a pressure-bearing frame fixedly connected to the bottom of the inner wall of the testing box, a placement plate slidably connected to the top of the pressure-bearing frame, a pressure sensor disposed on the top of the placement plate, a square groove formed on the top of the pressure-bearing frame, a screw block fixedly connected to the bottom of the placement plate, the bottom end of the screw block extending below the square groove, a screw rod threadedly connected to the inside of the screw block, the rear end of the screw rod rotatably connected to the rear side of the inner wall of the pressure-bearing frame, a forward and reverse motor disposed at the front end of the screw rod, the forward and reverse motor being fixedly mounted inside the pressure-bearing frame by a support plate, and electric pushers fixedly connected to the front and rear sides of the left and right sides of the inner wall of the testing box. The electric push rod has a push plate fixedly connected to its output end. A hydraulic jack is fixedly connected to the top of the inner wall of the testing box, located directly above the placement plate. Atomizing nozzles are fixedly connected to the left and right sides of the inner wall of the testing box, located above the electric push rod. The atomizing nozzles are inclined inward. A salt and alkali solution tank is fixedly connected to the top of the testing box. Output pumps are connected to the left and right sides of the salt and alkali solution tank. The output end of the output pump extends into the interior of the testing box and is connected to the input end of the atomizing nozzle through a connecting pipe. A closed door is hinged to the front of the testing box. A drain valve pipe is connected to the lower right side of the testing box. The surfaces of the testing box and all its internal components are coated with an anti-corrosion coating.
[0007] The beneficial effects of this utility model are as follows:
[0008] 1. This utility model features a sliding connection between the top of a pressure-bearing frame and a placement plate. The bottom of the placement plate is threadedly connected to a screw rod. Driven by a forward and reverse motor, the screw rod rotates, allowing the placement plate to slide back and forth on the top of the pressure-bearing frame. This facilitates placing the concrete sample to be tested in a suitable position on the placement plate, improving operational convenience. A pressure sensor accurately measures the pressure experienced by the concrete sample during compressive strength testing. An electric push rod and push plate push the concrete block precisely between the pressure sensor and the hydraulic jack. An inwardly tilted atomizing nozzle delivers a saline-alkali solution from a saline-alkali solution tank and an output pump to the atomizing nozzle for spraying. This simulates a high-salt-alkali environment within the testing chamber, enabling the testing of the concrete's compressive strength under such conditions. This provides excellent environmental simulation, achieving the goal of simulating a high-salt-alkali environment in a confined space for concrete testing, improving testing effectiveness. It also facilitates the removal and placement of the concrete block, preventing accidental contact with the saline-alkali solution and potential damage to personnel.
[0009] 2. By setting a screw protective sleeve, this utility model can prevent salt and alkali solutions and impurities from adhering to the screw, avoid rusting and damage to the screw, and ensure the normal rotation of the screw and the smooth sliding of the placement plate; the motor protective cover on the surface of the forward and reverse motor can protect the forward and reverse motor from salt and alkali solution corrosion, and improve the reliability and service life of the forward and reverse motor. Attached Figure Description
[0010] Figure 1 This is a schematic diagram of the structure of this utility model.
[0011] Figure 2 This is a frontal sectional view of the present invention.
[0012] Figure 3 This is a schematic diagram of the left-side cross-sectional structure of this utility model.
[0013] Figure 4 This is a schematic diagram of the cross-sectional structure of this utility model viewed from below.
[0014] Figure 5 This is a schematic diagram of the left-side structure of this utility model.
[0015] Figure 6 This utility model Figure 3 A magnified structural diagram of A in the diagram. Detailed Implementation
[0016] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.
[0017] like Figures 1 to 6As shown, the compressive strength testing equipment for concrete testing in high salinity and alkali environments in this embodiment includes a testing box 1. A pressure-bearing frame 2 is fixedly connected to the bottom of the inner wall of the testing box 1. A placement plate 3 is slidably connected to the top of the pressure-bearing frame 2. A pressure sensor 4 is installed on the top of the placement plate 3. A square groove is opened on the top of the pressure-bearing frame 2. A screw block 5 is fixedly connected to the bottom of the placement plate 3. The bottom end of the screw block 5 extends below the square groove. A screw rod 6 is threadedly connected inside the screw block 5. The rear end of the screw rod 6 is rotatably connected to the rear side of the inner wall of the pressure-bearing frame 2. A forward and reverse motor 7 is installed at the front end of the screw rod 6. The forward and reverse motor 7 is fixed inside the pressure-bearing frame 2 by a support plate. Electric push rods 8 are fixedly connected to the front and rear sides of the left and right sides of the inner wall of the testing box 1. The electric push rods 8... A push plate 9 is fixedly connected to the outlet end. A hydraulic jack 10 is fixedly connected to the top of the inner wall of the test box 1, located directly above the placement plate 3. Atomizing nozzles 11 are fixedly connected to the left and right sides of the inner wall of the test box 1, located above the electric push rod 8. The atomizing nozzles 11 are inclined inward. A salt solution tank 12 is fixedly connected to the top of the test box 1. Output pumps 13 are connected to the left and right sides of the salt solution tank 12. The output end of the output pump 13 passes through the interior of the test box 1 and is connected to the input end of the atomizing nozzle 11 through a connecting pipe. A closed door 14 is hinged to the front of the test box 1. A drain valve pipe is connected to the lower right side of the test box 1. The surface of the test box 1 and its internal components are all coated with an anti-corrosion coating.
[0018] refer to Figure 6 The screw 6 is fitted with retractable screw protective sleeves 15 on both the front and back sides, and the inner ends of the two screw protective sleeves 15 are fixedly connected to the surface of the screw block 5. The inner ends of the two screw protective sleeves 15 are fixedly connected to the rear side of the inner wall of the pressure frame 2 and the back side of the forward and reverse motor 7, respectively. The surface of the forward and reverse motor 7 is fitted with a motor protective cover 16.
[0019] In this embodiment, by setting a screw protective sleeve 15, it can prevent salt and alkali solutions and impurities from adhering to the screw 6, avoid the screw 6 from rusting and being damaged, and ensure the normal rotation of the screw 6 and the smooth sliding of the placement plate 3; the surface of the forward and reverse motor 7 is covered with a motor protective cover 16, which can protect the forward and reverse motor 7 from the corrosion of salt and alkali solutions, and improve the reliability and service life of the forward and reverse motor 7.
[0020] refer to Figure 6 The output end of the forward and reverse motor 7 is fixedly connected to the reducer 17, and the output end of the reducer 17 is fixedly connected to the front end of the screw 6.
[0021] In this embodiment, by setting a speed reducer 17, the rotational speed of the stainless steel screw 6 can be precisely controlled, thereby more accurately controlling the moving speed and position of the placement plate 3, and improving the accuracy and stability of equipment operation.
[0022] refer to Figure 1T-shaped strips 18 are fixedly connected to the left and right sides of the top of the pressure frame 2, and T-shaped grooves 19 that cooperate with the T-shaped strips 18 are opened on the left and right sides of the bottom of the placement plate 3. The surface of the T-shaped strips 18 is slidably connected to the inner wall of the T-shaped grooves 19.
[0023] In this embodiment, by setting up a matching T-shaped strip 18 and T-shaped groove 19, when the forward and reverse motor 7 starts and drives the screw 6 to rotate, causing the screw block 5 and the placement plate 3 to move back and forth, the T-shaped strip 18 slides inside the T-shaped groove 19, which can effectively prevent the placement plate 3 from shaking or shifting during the sliding process, enhance the stability of the sliding of the placement plate 3, and ensure the stability of the concrete sample placement.
[0024] refer to Figure 1 The closed door 14 has a through observation slot in the center, and a transparent glass 20 is installed inside the observation slot. A sealing ring 21 is fixedly connected to all four sides of the transparent glass 20, and the surface of the sealing ring 21 is fixedly connected to the inner wall of the observation slot.
[0025] This embodiment features an observation slot with a transparent glass 20 and a sealing ring 21 around the transparent glass 20. This allows operators to easily observe the pressure of the concrete sample inside the test chamber 1 and the simulation effect of the high-salt-alkali environment, while also ensuring the airtightness of the test chamber 1 and preventing leakage of the salt-alkali solution.
[0026] refer to Figure 1 Magnetic sealing strips 22 are fixedly connected to the four sides of the inner side of the closed door 14, and sealing grooves 23 that cooperate with the magnetic sealing strips 22 are opened on the four sides of the front of the detection box 1.
[0027] In this embodiment, by setting up a magnetic sealing strip and a sealing groove 23 in cooperation, when the closed door 14 is closed, the magnetic sealing strip enters the interior of the sealing groove 23 and its surface adheres to the inner wall of the sealing groove 23, which further improves the sealing performance of the test chamber 1, reduces the leakage of salt and alkali solutions during the high salt and alkali environment simulation process, and ensures the stability of the test environment and the accuracy of the test results.
[0028] This invention involves adding an appropriate amount of salt-alkali solution to the salt-alkali solution tank 12, adjusting the solution concentration according to the testing requirements, connecting the power supply to the equipment, and checking whether the power equipment such as the forward and reverse motor 7, electric push rod 8, hydraulic jack 10, output pump 13, and pressure sensor 4 are working properly. The forward and reverse motor 7 is started, and by controlling the rotation direction of the forward and reverse motor 7, the placement plate 3 is moved back and forth on the top of the pressure frame 2. The concrete sample to be tested is placed on the placement plate 3. Using the position of the pressure sensor 4 as a reference, the position of the placement plate 3 is adjusted. The concrete block is moved by the electric push rod 8 and the push plate 9 to place the concrete sample in the optimal position for testing. Then, the sealing door 14 is closed, and the output pump 13 is started to transport the salt-alkali solution in the salt-alkali solution tank 12 to the atomizing nozzle 11 through the connecting pipe. The atomizing nozzle 11 sprays the salt-alkali solution into the testing chamber 1 to simulate a high salt-alkali environment. Then, the hydraulic jack 10 is started to apply pressure from the top to perform a compressive strength test on the concrete sample. Pressure sensor 4 collects the pressure data of the concrete sample in real time and transmits the data to the display device or recording system. During the test, the operator observes the pressure condition of the concrete sample through the observation slot, such as whether cracks or deformation occur, and records the relevant information. After the test is completed, the drain valve is opened to discharge the sewage and impurities in the test box 1, clean the inside of the test box 1 and the surface of each component, keep the equipment clean, and prevent the device from rusting.
Claims
1. A compressive strength testing device for concrete in high salinity and alkali environments, comprising a testing chamber (1), characterized in that: A pressure frame (2) is fixedly connected to the bottom of the inner wall of the test box (1). A placement plate (3) is slidably connected to the top of the pressure frame (2). A pressure sensor (4) is installed on the top of the placement plate (3). A square groove is opened on the top of the pressure frame (2). A screw block (5) is fixedly connected to the bottom of the placement plate (3). The bottom end of the screw block (5) extends to the bottom of the square groove. A screw rod (6) is threaded inside the screw block (5). The rear end of the screw rod (6) is rotatably connected to the rear side of the inner wall of the pressure frame (2). A forward and reverse motor (7) is installed at the front end of the screw rod (6). The forward and reverse motor (7) is fixed inside the pressure frame (2) by a support plate. Electric push rods (8) are fixedly connected to the front and rear sides of the left and right sides of the inner wall of the test box (1). A push plate (9) is fixedly connected to the output end of the electric push rod (8). A hydraulic jack (10) is fixedly connected to the top of the inner wall of the test box (1) and located directly above the placement plate (3). Atomizing nozzles (11) located above electric push rods (8) are fixedly connected to the left and right sides of the inner wall of the test box (1). The atomizing nozzles (11) are set inward. A salt solution tank (12) is fixedly connected to the top of the test box (1). Output pumps (13) are connected to the left and right sides of the salt solution tank (12). The output end of the output pump (13) penetrates into the interior of the test box (1) and is connected to the input end of the atomizing nozzle (11) through a connecting pipe. A closed door (14) is hinged to the front of the test box (1). A drain valve pipe is connected to the lower right side of the test box (1). The surface of the test box (1) and its internal components are all provided with anti-corrosion coating.
2. The compressive strength testing equipment for concrete testing in high-salt-alkali environments according to claim 1, characterized in that: The screw (6) is fitted with retractable screw protective sleeves (15) on both the front and back sides, and the inner ends of the two screw protective sleeves (15) are fixedly connected to the surface of the screw block (5). The inner ends of the two screw protective sleeves (15) are fixedly connected to the rear side of the inner wall of the pressure frame (2) and the back side of the forward and reverse motor (7), respectively. The surface of the forward and reverse motor (7) is fitted with a motor protective cover (16).
3. The compressive strength testing equipment for concrete testing in high-salt-alkali environments according to claim 2, characterized in that: The output end of the forward and reverse motor (7) is fixedly connected to a reducer (17), and the output end of the reducer (17) is fixedly connected to the front end of the screw (6).
4. The compressive strength testing equipment for concrete testing in high salinity and alkali environments according to claim 3, characterized in that: The top left and right sides of the pressure-bearing frame (2) are fixedly connected with T-shaped strips (18), and the bottom left and right sides of the placement plate (3) are provided with T-shaped grooves (19) that cooperate with the T-shaped strips (18). The surface of the T-shaped strips (18) is slidably connected to the inner wall of the T-shaped grooves (19).
5. The compressive strength testing equipment for concrete testing in high salinity and alkali environments according to claim 4, characterized in that: The closed door (14) has a through observation slot in the center, and a transparent glass (20) is installed inside the observation slot. A sealing ring (21) is fixedly connected to all four sides of the transparent glass (20), and the surface of the sealing ring (21) is fixedly connected to the inner wall of the observation slot.
6. The compressive strength testing equipment for concrete testing in high-salt-alkali environments according to claim 5, characterized in that: The inner side of the closed door (14) is fixedly connected with magnetic sealing strips (22), and the front of the detection box (1) is provided with sealing grooves (23) that cooperate with the magnetic sealing strips (22).