Rebar detector for construction engineering quality supervision

Abstract

The utility model provides a kind of steel bar detector for construction engineering quality supervision, including base, digital display screen, rodless cylinder, slide base, and the front of base is fixedly connected with digital display screen.The advantages of the present application are that when the steel bar breaks, the protective curtain can effectively block the broken steel bar, preventing it from causing harm to the personnel in front of the detector, greatly improving the safety during the detection process.The protective structure is designed to be storable, when protection is not needed, remove the hook, and the spring will automatically retract under its own spring force, driving the protective curtain to be stored in the sleeve.This design ensures that the protective structure does not occupy additional space when not in use, making it easy to store and transport the equipment, especially suitable for situations where the detection site has limited space.The protective curtain is easy to pull out and store, and the staff only needs to pull or release the protective curtain to complete the operation without complex steps and professional skills, improving the efficiency of the detection work.

Description

Technical Field

[0001] This utility model relates to the field of steel bar quality testing technology, and in particular to a steel bar testing instrument for quality supervision of building engineering. Background Technology

[0002] Currently, existing rebar testing instruments typically include a rigid base, a drive mechanism for applying tensile force (such as a hydraulic cylinder or a motor-driven lead screw), and upper and lower clamps for holding the rebar sample. During operation, the rebar sample is clamped between the clamps, the drive mechanism operates, and an increasing tensile force is applied to the rebar until it yields or fractures. Sensors record the force changes during the process, thereby determining key parameters such as tensile strength and yield strength.

[0003] However, these existing technologies have revealed some significant shortcomings in application, especially in terms of security and operability: When reinforcing bars reach their ultimate tensile strength in a tensile test, they undergo sudden brittle fracture. At the moment of fracture, the accumulated elastic potential energy is rapidly released, causing the broken pieces of the reinforcing bar to shatter and fly out at extremely high speeds. Most existing testing instruments lack effective and dedicated protective devices, and the shattered reinforcing bar fragments pose a serious safety threat to on-site operators and surrounding equipment, representing a significant hazard in the laboratory. Therefore, this paper proposes a reinforcing bar testing instrument for construction engineering quality supervision to address the aforementioned problems. Utility Model Content

[0004] The purpose of this invention is to at least solve one of the aforementioned technical defects.

[0005] Therefore, one objective of this utility model is to provide a steel bar testing instrument for supervising the quality of building construction projects, so as to solve the problems mentioned in the background art and overcome the shortcomings of the existing technology.

[0006] To achieve the above objectives, one embodiment of the present invention provides a steel bar detector for supervising the quality of construction projects, including a base, a digital display screen, a rodless cylinder, and a slide. The digital display screen is fixedly connected to the front of the base, the rodless cylinder is fixedly connected to the top of the base, and the slide is fixedly connected to the output end of the rodless cylinder. The slide can move up and down. A connector is fixedly connected to the front of the slide. An upper clamping cylinder is fixedly connected to the bottom of the connector. A lower clamping cylinder is fixedly connected to the top of the base. The output ends of the upper and lower clamping cylinders are movably connected to clamping jaws, and the clamping jaws are in pairs. A sensor is installed on the connector, and a solenoid valve is fixedly connected to the top of the base. The solenoid valve is connected to the air inlet and outlet of the upper and lower clamping cylinders through an air pipe. The outer surface of the trachea is provided with a tank chain. A platform is fixedly connected to the top of the base. A sleeve is fixedly connected to one end of the top surface of the platform. The sleeve has an opening on its side. A main shaft is movably connected to the center inside the sleeve. A spring coil is movably connected to the outer surface of the main shaft. A protective curtain is fixedly connected to the end of the spring coil. A hook is fixedly connected to the end of the protective curtain. A hanging point is fixedly connected to the top of the base. The hook is hung on the corresponding hanging point.

[0007] Preferably, in any of the above embodiments, the base is connected to the rodless cylinder via a flange, and the rodless cylinder is installed vertically.

[0008] The above technical solution is adopted as follows: When the rebar detector for quality supervision of this construction project is working, the rebar to be tested is first placed between the jaws of the upper and lower clamping cylinders. The airflow in the air pipe is controlled by a solenoid valve, which in turn drives the upper and lower clamping cylinders, causing the jaws to clamp and fix the rebar. At this time, the relevant testing parameters are set on the digital display screen. Before the tensile test is carried out after the rebar is loaded, the protective curtain is manually pulled. Since the end of the protective curtain is fixedly connected to the spring coil, and the spring coil is movably connected to the main shaft, the spring coil will open when the protective curtain is pulled out, similar to the working principle of a measuring tape. The hook at the end of the protective curtain is hung on the hanging point at the top of the base, thus forming a protective barrier in front of the detector.

[0009] Afterwards, the rodless cylinder is activated, and its output end drives the slide to move up and down. The joint on the slide and the upper clamp cylinder also move accordingly, applying tensile force to the steel bar for a tensile test. During the test, if the steel bar breaks, the broken section will be blocked by the protective curtain to prevent it from splashing and injuring personnel in front of the testing instrument. After the test, the hook is removed, and the spring coil retracts under its own elastic force, pulling the protective curtain into the sleeve, occupying minimal space.

[0010] Preferably, in any of the above solutions, the slide block is welded to the joint, and both the upper and lower clamping cylinders are installed vertically.

[0011] Preferably, in any of the above embodiments, the bottom end of the tank chain is movably connected to the top surface of the base, the tank chain is made of plastic, and the top end of the tank chain is movably connected to the side of the upper clamping cylinder.

[0012] The core design of this device is as follows: before the tensile test of the reinforcing steel, the protective curtain in the sleeve is pulled out and hung at the hanging point, forming a reliable protective barrier in front of the testing instrument. When the reinforcing steel breaks, the protective curtain can effectively block the broken sections of the reinforcing steel, preventing them from sharding and injuring personnel in front of the testing instrument, greatly improving the safety of the testing process.

[0013] The protective structure features a retractable design. When protection is not needed, the hooks can be removed, and the spring coils will automatically retract under their own elasticity, pulling the protective curtain into the sleeve. This design ensures that the protective structure does not occupy extra space when not in use, facilitating equipment storage and transportation, and is especially suitable for situations where testing sites have limited space. The operation of pulling out and retracting the protective curtain is simple and easy to understand; workers only need to pull or release the curtain by hand to complete the operation, without complicated procedures or professional skills, thus improving the efficiency of the testing work.

[0014] Preferably, in any of the above embodiments, the spring coil is made of stainless steel, and the end of the spring coil is riveted to the main shaft.

[0015] Preferably, of any of the above embodiments, the protective curtain is made of nylon, the height of the protective curtain is half the height of the rodless cylinder, and the thickness of the protective curtain is 2-3mm.

[0016] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows: Before conducting tensile tests on the reinforcing bars, the protective curtain inside the sleeve of this construction project quality supervision instrument is pulled out and hung at the attachment point, forming a reliable protective barrier in front of the instrument. When a reinforcing bar breaks, the protective curtain effectively blocks the broken sections, preventing them from sharding and injuring personnel in front of the instrument, thus greatly improving safety during the testing process.

[0017] The protective structure features a retractable design. When protection is not needed, the hooks can be removed, and the spring coils will automatically retract under their own elasticity, pulling the protective curtain into the sleeve. This design ensures that the protective structure does not occupy extra space when not in use, facilitating equipment storage and transportation, and is especially suitable for situations where testing sites have limited space. The operation of pulling out and retracting the protective curtain is simple and easy to understand; workers only need to pull or release the curtain by hand to complete the operation, without complicated procedures or professional skills, thus improving the efficiency of the testing work.

[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of the base of this utility model; Figure 3This is a schematic diagram of the rodless cylinder of this utility model; Figure 4 This utility model Figure 1 Enlarged structural diagram at point A; Figure 5 This is a cross-sectional view of the sleeve section of this utility model.

[0020] In the diagram: 1-base, 2-digital display screen, 3-rodless cylinder, 4-slide seat, 5-connector, 6-upper clamping cylinder, 7-lower clamping cylinder, 8-gripper, 9-solenoid valve, 10-air pipe, 11-tank chain, 12-platform, 13-sleeve, 14-spindle, 15-spring coil, 16-protective curtain, 17-hook, 18-hanging point. Detailed Implementation

[0021] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0022] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] like Figure 1-5 As shown, the steel bar detector for quality supervision of this construction project includes a base 1, a digital display screen 2, a rodless cylinder 3, and a slide 4. The digital display screen 2 is fixedly connected to the front of the base 1, the rodless cylinder 3 is fixedly connected to the top of the base 1, and the slide 4 is fixedly connected to the output end of the rodless cylinder 3. The slide 4 can move up and down. The front of the slide 4 is fixedly connected to the connector 5. The bottom of the connector 5 is fixedly connected to the upper clamping cylinder 6. The top of the base 1 is fixedly connected to the lower clamping cylinder 7. The output ends of the upper clamping cylinder 6 and the lower clamping cylinder 7 are movably connected to clamping jaws 8, with each pair of clamping jaws forming a group. A sensor is installed on connector 5, and a solenoid valve 9 is fixedly connected to the top of base 1. The solenoid valve 9 is connected to the air inlet and outlet of upper clamping cylinder 6 and lower clamping cylinder 7 through air pipe 10. The outer surface of the trachea 10 is provided with a tank chain 11. The top of the base 1 is fixedly connected to a platform 12. One end of the top surface of the platform 12 is fixedly connected to a sleeve 13. The side of the sleeve 13 has an opening. The center of the sleeve 13 is movably connected to a main shaft 14. The outer surface of the main shaft 14 is movably connected to a spring coil 15. The end of the spring coil 15 is fixedly connected to a protective curtain 16. The end of the protective curtain 16 is fixedly connected to a hook 17. The top of the base 1 is fixedly connected to a hanging point 18. The hook 17 is hung on the corresponding hanging point 18.

[0024] Example 1: The base 1 and the rodless cylinder 3 are connected via a flange, and the rodless cylinder 3 is installed vertically. The slide 4 is welded to the connector 5, and both the upper clamping cylinder 6 and the lower clamping cylinder 7 are installed vertically. The bottom end of the tank chain 11 is movably connected to the top surface of the base 1. The tank chain 11 is made of plastic, and the top end of the tank chain 11 is movably connected to the side of the upper clamping cylinder 6. The spring coil 15 is made of stainless steel, and the end of the spring coil 15 is riveted to the main shaft 14. The protective curtain 16 is made of nylon, and its height is half the height of the rodless cylinder 3. The thickness of the protective curtain 16 is 2-3 mm.

[0025] Example 2: When the steel bar testing instrument for construction engineering quality supervision is working, the steel bar to be tested is first placed between the jaws 8 of the upper clamping cylinder 6 and the lower clamping cylinder 7. The airflow of the air pipe 10 is controlled by the solenoid valve 9, which in turn drives the upper clamping cylinder 6 and the lower clamping cylinder 7, so that the jaws 8 clamp and fix the steel bar. At this time, the relevant testing parameters are set on the digital display screen 2. Before the steel bar is loaded and the tensile test is to be carried out, the protective curtain 16 is pulled manually. Since the end of the protective curtain 16 is fixedly connected to the spring coil 15, and the spring coil 15 is movably connected to the main shaft 14, when the protective curtain 16 is pulled out, the spring coil 15 will open accordingly, similar to the working principle of a measuring tape. The hook 17 at the end of the protective curtain 16 is hung on the hanging point 18 at the top of the base 1, thereby forming a protective barrier in front of the testing instrument.

[0026] Afterwards, the rodless cylinder 3 is activated, and its output end drives the slide 4 to move up and down. The connector 5 on the slide 4 and the upper clamping cylinder 6 also move accordingly, applying tensile force to the steel bar for a tensile test. During the test, if the steel bar breaks, the broken section will be blocked by the protective curtain 16 to prevent it from splashing and injuring personnel in front of the testing instrument. After the test, the hook 17 is removed, and the spring coil 15 retracts under its own elastic force, pulling the protective curtain 16 into the sleeve 13, occupying little space.

[0027] The working principle of this utility model is as follows: At a construction project quality supervision site, a batch of steel bars needs to be tested for tensile strength. The staff places the steel bar tester in a suitable testing position, ensuring the base 1 is stable. First, one end of the steel bar to be tested is placed in the jaws 8 of the lower clamping cylinder 7. The airflow through the air pipe 10 is controlled by the solenoid valve 9, causing the jaws 8 of the lower clamping cylinder 7 to clamp the steel bar. Then, the rodless cylinder 3 is activated, causing the slide 4 to move the upper clamping cylinder 6 downwards, placing the other end of the steel bar in the jaws 8 of the upper clamping cylinder 6. Similarly, the jaws 8 of the upper clamping cylinder 6 are controlled by the solenoid valve 9 to clamp the steel bar.

[0028] Before the tensile test is conducted after the steel reinforcement is loaded, the worker holds the end of the protective curtain 16 and pulls it outward. As the protective curtain 16 is pulled out, the spring coil 15 rotates and opens on the main shaft 14. When the protective curtain 16 is pulled to the appropriate length, the hook 17 at the end of the protective curtain 16 is hung on the hanging point 18 at the top of the base 1, thus forming a protective barrier in front of the testing instrument.

[0029] Next, the staff set the relevant parameters for the tensile test on the digital display screen 2, such as the tensile force and test time. After setting, the rodless cylinder 3 was started. The output end of the rodless cylinder 3 drove the slide 4 upward, and the joint 5 on the slide 4 and the upper clamping cylinder 6 also moved upward, applying an upward tensile force to the steel bar and starting the tensile test. During the test, the digital display screen 2 displayed data such as the tensile force in real time.

[0030] If the steel bar breaks during the experiment, the broken pieces will be blocked by the protective curtain 16 and will not splash onto the personnel in front of the testing instrument. After the experiment, the personnel remove the hook 17, and the spring coil 15 retracts under its own elastic force, causing the protective curtain 16 to be stored in the sleeve 13. Then, the jaws 8 of the upper clamping cylinder 6 and the lower clamping cylinder 7 are released, and the tested steel bar is taken out, completing the test.

[0031] Compared with the prior art, the present invention has the following advantages: Before conducting tensile tests on the reinforcing bars, the protective curtain 16 in the sleeve 13 is pulled out and hung on the hanging point 18, forming a reliable protective barrier in front of the instrument. When the reinforcing bar breaks, the protective curtain 16 effectively blocks the broken sections, preventing them from splattering and injuring personnel in front of the instrument, thus greatly improving safety during the testing process.

[0032] The protective structure features a retractable design. When protection is not needed, removing the hook 17 causes the spring coil 15 to automatically retract under its own elasticity, pulling the protective curtain 16 into the sleeve 13. This design ensures the protective structure does not occupy extra space when not in use, facilitating equipment storage and transportation, and is particularly suitable for situations where testing sites have limited space. The operation of pulling out and retracting the protective curtain 16 is simple and easy to understand; workers only need to pull or release the curtain 16 by hand to complete the operation, requiring no complicated steps or professional skills, thus improving the efficiency of the testing work.

Claims

1. A steel bar testing instrument for quality supervision in construction engineering, characterized in that, Includes a base (1), a digital display screen (2), a rodless cylinder (3), and a slide (4). The digital display screen (2) is fixedly connected to the front of the base (1), the rodless cylinder (3) is fixedly connected to the top of the base (1), and the slide (4) is fixedly connected to the output end of the rodless cylinder (3). The slide (4) can move up and down. A connector (5) is fixedly connected to the front of the slide (4). An upper clamping cylinder (6) is fixedly connected to the bottom of the connector (5). A lower clamping cylinder (7) is fixedly connected to the top of the base (1). The output ends of the upper clamping cylinder (6) and the lower clamping cylinder (7) are movably connected to clamping claws (8), and the clamping claws (8) are in pairs; A sensor is installed on the connector (5), and a solenoid valve (9) is fixedly connected to the top of the base (1). The solenoid valve (9) is connected to the air inlet and outlet of the upper clamping cylinder (6) and the lower clamping cylinder (7) through an air pipe (10). The outer surface of the trachea (10) is provided with a tank chain (11). The top of the base (1) is fixedly connected to a platform (12). A sleeve (13) is fixedly connected to one end of the top surface of the platform (12). The sleeve (13) has an opening on its side. A main shaft (14) is movably connected to the center inside the sleeve (13). A spring coil (15) is movably connected to the outer surface of the main shaft (14). A protective curtain (16) is fixedly connected to the end of the spring coil (15). A hook (17) is fixedly connected to the end of the protective curtain (16). A hanging point (18) is fixedly connected to the top of the base (1). The hook (17) is hung on the corresponding hanging point (18).

2. The steel bar detector for quality supervision in construction engineering as described in claim 1, characterized in that: The base (1) is connected to the rodless cylinder (3) via a flange, and the rodless cylinder (3) is installed vertically.

3. A steel bar detector for quality supervision in construction engineering as described in claim 2, characterized in that: The slide block (4) is welded to the connector (5), and the upper clamping cylinder (6) and the lower clamping cylinder (7) are both installed vertically.

4. A steel bar detector for quality supervision in construction engineering as described in claim 3, characterized in that: The bottom end of the tank chain (11) is movably connected to the top surface of the base (1). The tank chain (11) is made of plastic. The top end of the tank chain (11) is movably connected to the side of the upper clamping cylinder (6).

5. A steel bar detector for quality supervision in construction engineering as described in claim 4, characterized in that: The spring coil (15) is made of stainless steel, and the end of the spring coil (15) is riveted to the main shaft (14).

6. A steel bar detector for quality supervision in construction engineering as described in claim 5, characterized in that: The protective curtain (16) is made of nylon, the height of the protective curtain (16) is half the height of the rodless cylinder (3), and the thickness of the protective curtain (16) is 2-3mm.

Images