Device for detecting safety of steel structure after fire

Abstract

The utility model discloses a device for detecting the safety of a steel structure after a fire, and relates to the technical field of building safety, in particular to the device for detecting the safety of the steel structure after the fire, which comprises a box body, and an extrusion anti-skid assembly and two clamping assemblies are arranged on the box body; the upper portion and the lower portion of the steel structure column are clamped and fixed through the two clamping assemblies, a second motor is used for driving an extrusion plate to push the steel structure column, namely, the extrusion plate applies thrust to the middles of the two fixed positions of the steel structure, and the steel structure column slightly deforms after being locally pushed; measuring the torque and pressure of the steel structure cylinder by using a strain sensor, and further measuring the strength of the steel structure cylinder; an anti-skid plate is driven by a second motor to be tightly attached to the ground, and the ground is clamped and fixed by the anti-skid plate, so that the whole detection device is stable; the purpose of detecting the steel structure in an automatic mode is achieved, and the detection efficiency of the steel structure is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of building safety, and particularly relates to a detection device for the safety of steel structures after a fire. Background Technique

[0002] Indoor playing with fire, smoking after drinking, bringing in flammable and explosive items and other situations are the main causes of indoor fires; there are also some fires caused by household appliances, such as improper use of electrical appliances such as rice cookers, electric furnaces, and electric irons, which lead to power short circuits, thus triggering fires. Indoor electrical appliances should not be used for a long time, which may cause the electrical load to be too large and trigger a fire, and the consequences are unimaginable. After the steel structure of a house has experienced a fire, its strength will also change greatly. The steel structure will lose its bearing capacity at high temperatures, thus affecting the safety of the house. Therefore, after a house catches fire, it is necessary to detect and process the main steel structures in the house.

[0003] In the publicly disclosed Chinese patent application, the publication number: CN214096630U, the patent name: A detection device for the safety of steel structures after a fire. Although, by setting a servo motor, it is convenient to drive the threaded lead screw to rotate, and under the limiting action of the limiting end rod, sliding wheel, limiting groove, strip-shaped wall groove, and T-shaped fixing rod, the moving end cylinder moves away from the detection device body, so as to use the extrusion block to perform extrusion processing on the steel structure. However, in this prior art, the detection personnel need to manually use clamps and fastening bolts to fixedly connect the detection device body with the steel structure to be detected; the detection personnel brake the brake wheel and lower the support plate, and cooperate with the anti-slip bumps arranged at the bottom of the support plate to support the detection device body. This prior art needs to fix the detection device body and the steel structure to be detected manually, and needs to reinforce the detection device body with a support plate manually. The overall automation degree of this prior art is low, resulting in low detection efficiency for steel structures.

[0004] In summary, in order to solve the problem of low detection efficiency for steel structures in this prior art, this application is specifically proposed to solve the problem. Content of the Utility Model

[0005] (1) Technical Problems to be Solved

[0006] Aiming at the deficiencies of the prior art, the utility model provides a detection device for the safety of steel structures after a fire, which solves the problems put forward in the above background technique.

[0007] (2) Technical Solutions

[0008] To achieve the above object, the utility model is realized by the following technical solutions: A detection device for the safety of steel structures after a fire, including a box body, on which an extrusion anti-slip assembly and two clamping assemblies are provided. The clamping assembly includes a first motor, a first lead screw, two moving blocks and two clamping arms. The two ends of the first lead screw are rotatably connected to the box body, the output shaft end of the first motor is drivingly connected to the first lead screw, two threaded areas with opposite directions are engraved on the outer side wall of the first lead screw, the two threaded areas of the first lead screw are respectively threadedly connected to the two moving blocks, and the two clamping arms are respectively arranged on the two moving blocks; The extrusion anti-slip assembly includes a second motor, an extrusion plate and an anti-slip plate. The second motor is fixedly installed inside the box body, and the second motor is respectively drivingly connected to the extrusion plate and the anti-slip plate. The extrusion plate is horizontally arranged on the box body, and after horizontal movement, the extrusion plate extrudes the steel structure located on one side of the box body; The anti-slip plate is longitudinally arranged on the box body, and after longitudinal movement, the anti-slip plate performs anti-slip clamping on the ground.

[0009] Optionally, the extrusion anti-slip assembly further includes a second lead screw and a moving cylinder. One end of the second lead screw is coaxially and fixedly connected to the output shaft end of the second motor. The moving cylinder is slidably connected to the inner wall of the box body, and one end of the moving cylinder is sleeved on the other end of the second lead screw. The moving cylinder is threadedly connected to the second lead screw, and the other end of the moving cylinder is fixedly connected to one side wall of the extrusion plate.

[0010] Optionally, the extrusion anti-slip assembly further includes a first gear, a third lead screw and a sleeve. The third lead screw passes through the first gear and is fixedly connected to the first gear. The middle part of the third lead screw is rotatably connected to the box body. A threaded area is engraved on the lower outer side wall of the third lead screw. The upper end of the sleeve is sleeved on the lower end of the third lead screw. The third lead screw is threadedly connected to the sleeve, and the lower end of the sleeve is fixedly connected to the anti-slip plate.

[0011] Optionally, a first rack is fixedly connected to the outer side wall of the moving cylinder, and the first rack meshes with the first gear.

[0012] Optionally, the extrusion anti-slip assembly further includes a second rack, a second gear, a connecting column and a connecting rod. The second rack is fixedly connected to the outer side wall of the moving cylinder. The second gear is rotatably arranged on the box body. The second rack meshes with the second gear. The connecting column is fixedly connected to a side wall of the second gear away from the axis. The second gear is drivingly connected to the connecting rod through the connecting column. The lower end of the connecting rod is hinged to the anti-slip plate, and the upper part of the anti-slip plate is slidably connected to the box body.

[0013] Optionally, a connecting ring is fixedly connected to the upper end of the connecting rod, and the end of the connecting column away from the second gear passes through the connecting ring.

[0014] Optionally, it further includes a control board and a strain gauge sensor, and the control board is electrically connected to the strain gauge sensor, the first motor, and the second motor through wires.

[0015] (III) Beneficial Effects

[0016] The utility model provides a detection device for the safety of steel structures after a fire, having the following beneficial effects:

[0017] Through the cooperative setting of the control board, the strain gauge sensor, the extrusion anti-slip assembly, and the two clamping assemblies, the detection device for the safety of steel structures after a fire has the effects of clamping and fixing two positions of the steel structure and pressurizing and detecting whether there is deformation in the middle of the two positions of the steel structure. The two clamping assemblies clamp and fix the upper and lower two positions of the steel structure column. The second motor drives the extrusion plate to push the steel structure column, that is, the extrusion plate applies a thrust to the middle of the two fixed positions of the steel structure. After the local part of the steel structure column is subjected to the thrust, it undergoes a slight deformation. The strain gauge sensor is used to measure the torque and pressure of the steel structure column, and then the strength of the steel structure column is measured. The second motor drives the anti-slip plate to closely adhere to the ground, and the anti-slip plate is used to clamp and fix the ground, thereby realizing the stability of the entire detection device. The purpose of detecting the steel structure in an automated manner is achieved, and the detection efficiency of the steel structure is greatly improved. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0019] Figure 1 It is a three-dimensional structural schematic diagram of Embodiment 1 of the detection device for the safety of steel structures after a fire of the present utility model;

[0020] Figure 2 It is a partial cross-sectional structural schematic diagram of Embodiment 1 of the detection device for the safety of steel structures after a fire of the present utility model;

[0021] Figure 3 It is a three-dimensional structural schematic diagram of the moving cylinder in Embodiment 1 of the detection device for the safety of steel structures after a fire of the present utility model;

[0022] Figure 4 It is a three-dimensional structural schematic diagram of the sleeve in Embodiment 1 of the detection device for the safety of steel structures after a fire of the present utility model;

[0023] Figure 5Schematic three-dimensional structure diagram of the first gear in Embodiment 1 of a detection device for the safety of steel structures after a fire according to the present utility model;

[0024] Figure 6 Partial sectional structure diagram of Embodiment 2 of a detection device for the safety of steel structures after a fire according to the present utility model;

[0025] Figure 7 Schematic three-dimensional structure diagram of the second gear in Embodiment 2 of a detection device for the safety of steel structures after a fire according to the present utility model;

[0026] Figure 8 Schematic three-dimensional structure diagram of the connecting rod in Embodiment 2 of a detection device for the safety of steel structures after a fire according to the present utility model.

[0027] In the figure: 1, box body; 2, first motor; 3, first lead screw; 4, moving block; 5, clamping arm; 6, second motor; 7, second lead screw; 8, moving cylinder; 9, pressing plate; 10, first rack; 11, first gear; 12, third lead screw; 13, sleeve; 14, anti-slip plate; 15, second rack; 16, second gear; 17, connecting column; 18, connecting ring; 19, connecting rod. Specific embodiments

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying.

[0029] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0030] Embodiment 1, please refer to Figures 1 to 5, the present utility model provides a technical solution: a detection device for the safety of steel structures after a fire, including a box body 1, an extrusion anti-slip component and two clamping components are arranged on the box body 1, and also including a control board and a strain sensor. The control board is respectively connected to the strain sensor, the extrusion anti-slip component and the two clamping components for control connection.

[0031] Among them, the two clamping components are respectively used to clamp and fix the position points A and B of the steel structure column, and perform two-point clamping and fixing on the steel structure column. The extrusion anti-slip component has two functions: one is to push between the position points A and B of the steel structure column, and the steel structure column undergoes micro-deformation after being stressed between the position points A and B. The strain sensor is used to measure the torque and pressure conditions of the steel structure column during micro-deformation, so as to obtain data on the strength of the steel structure column, which is convenient for the staff to judge the safety of the steel structure. The control board is used to control the start and stop of the extrusion anti-slip component and the two clamping components, and is used to control and receive relevant data transmitted by the strain sensor, etc.

[0032] The clamping component includes a first motor 2, a first lead screw 3, two moving blocks 4 and two clamping arms 5. The two ends of the first lead screw 3 are rotatably connected to the box body 1, the output shaft end of the first motor 2 is in transmission connection with the first lead screw 3, two threaded areas with opposite directions are engraved on the outer side wall of the first lead screw 3, the two threaded areas of the first lead screw 3 are respectively in threaded connection with the two moving blocks 4, and the two clamping arms 5 are respectively arranged on the two moving blocks 4.

[0033] Among them, after the first motor 2 is started, it drives the first lead screw 3 to rotate, and the first lead screw 3 drives the two moving blocks 4 located thereon to move towards each other. The two moving blocks 4 drive the two clamping arms 5 to move towards each other and clamp the steel structure column. Thus, the clamping and fixing of the steel structure column is realized.

[0034] The extrusion anti-slip component includes a second motor 6, an extrusion plate 9 and an anti-slip plate 14. The second motor 6 is fixedly installed inside the box body 1, the second motor 6 is respectively in transmission connection with the extrusion plate 9 and the anti-slip plate 14, the extrusion plate 9 is horizontally arranged on the box body 1, and the extrusion plate 9 performs extrusion on the steel structure located on one side of the box body 1 after horizontal movement. The anti-slip plate 14 is vertically arranged on the box body 1, and the anti-slip plate 14 performs anti-slip clamping on the ground after vertical movement.

[0035] Among them, after the second motor 6 is started, it drives the extrusion plate 9 to move horizontally. The extrusion plate 9 moves horizontally to push the steel structure column and applies a thrust to the steel structure column. At the same time, after the second motor 6 is started, it drives the anti-slip plate 14 to move downward, and the anti-slip plate 14 tightly holds the ground after moving downward, and the stability strength of the entire detection device and the ground is improved through the anti-slip plate 14.

[0036] The control board is electrically connected to the strain sensor, the first motor 2 and the second motor 6 through wires.

[0037] Specifically, the extrusion anti-skid assembly also includes a second screw rod 7 and a moving cylinder 8. One end of the second screw rod 7 is coaxially fixedly connected to the output shaft end of the second motor 6. The moving cylinder 8 is slidably connected to the inner wall of the box body 1, and one end of the moving cylinder 8 is sleeved on the other end of the second screw rod 7. The moving cylinder 8 is threadedly connected to the second screw rod 7, and the other end of the moving cylinder 8 is fixedly connected to one side wall of the extrusion plate 9.

[0038] Among them, after the second motor 6 is started, it drives the second screw 7 to rotate, and the second screw 7 drives the moving cylinder 8 to slide on the box body 1. The moving cylinder 8 pushes the extrusion plate 9 to move laterally. The extrusion plate 9 moves laterally to the side away from the box body 1 and pushes the steel structure column.

[0039] More specifically, the extrusion anti-skid assembly further includes a first gear 11, a third screw rod 12, and a sleeve 13. The third screw rod 12 penetrates the first gear 11, and the third screw rod 12 is fixedly connected to the first gear 11. The middle part of the third screw rod 12 is rotatably connected to the box body 1. The lower outer wall of the third screw rod 12 is engraved with a threaded area. The upper end of the sleeve 13 is sleeved on the lower end of the third screw rod 12. The third screw rod 12 is threadedly connected to the sleeve 13, and the lower end of the sleeve 13 is fixedly connected to the anti-skid plate 14. The first rack 10 is fixedly connected to the outer wall of the moving cylinder 8, and the first rack 10 is meshed with the first gear 11.

[0040] Among them, when the movable cylinder 8 moves horizontally, it drives the first rack 10 to move horizontally, and the first rack 10 pushes the first gear 11 to rotate. The rotation of the first gear 11 drives the third screw rod 12 to rotate. The third screw rod 12 drives the sleeve 13 to move downward through the thread, and the sleeve 13 pushes the anti-skid plate 14 to move downward. After the anti-skid plate 14 moves downward, it tightly touches the ground, thereby stabilizing the entire detection device and the ground.

[0041] The control board can adopt one of a single chip microcomputer and an editable logic controller. The control board is equipped with a logic control program and a timing control program to meet the control needs of the first motor 2 and the second motor 6 and to meet the data processing needs of the strain sensor.

[0042] For example 2, please refer to Figures 6 to 8 The difference between this embodiment and the first embodiment is that the extrusion anti-skid assembly also includes a second rack 15, a second gear 16, a connecting column 17, and a connecting rod 19. The second rack 15 is fixedly connected to the outer wall of the moving cylinder 8, the second gear 16 is rotatably set on the box body 1, the second rack 15 is meshed with the second gear 16, the connecting column 17 is fixedly connected to a side wall of the second gear 16 away from the axis, the second gear 16 is transmission-connected to the connecting rod 19 through the connecting column 17, the lower end of the connecting rod 19 is hinged to the anti-skid plate 14, and the upper part of the anti-skid plate 14 is slidably connected to the box body 1.

[0043] Among them, the transverse movement of the moving cylinder 8 drives the movement of the second rack 15. The second rack 15 pushes the second gear 16 to rotate. The rotation of the second gear 16 drives the connecting column 17 located thereon to move longitudinally and transversely. When the connecting column 17 moves longitudinally, it pushes the connecting rod 19 to move up and down. The connecting rod 19 drives the anti-slip plate 14 to rise or fall. After the anti-slip plate 14 descends, it presses tightly against the ground.

[0044] Specifically, a connecting ring 18 is fixedly connected to the upper end of the connecting rod 19. One end of the connecting column 17 away from the second gear 16 penetrates through the connecting ring 18.

[0045] Among them, the rotation of the second gear 16 drives the connecting column 17 located thereon to move longitudinally or transversely. When the connecting column 17 moves longitudinally, it pushes the connecting rod 19 to move up and down. The connecting rod 19 drives the anti-slip plate 14 to rise or fall. When the connecting column 17 moves longitudinally or transversely, one end of it is always inside the connecting ring 18. The movement of the connecting column 17 pulls the connecting ring 18 to move, and the connecting ring 18 drives the connecting rod 19 to move up and down.

[0046] As mentioned above, it is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and the inventive concept of the present invention, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A detection device for the safety of steel structures after fire, characterized in that: The invention comprises a box body (1), on which an extrusion anti-skid component and two clamping components are arranged, and further comprises a control panel and a strain sensor; the clamping component comprises a first motor (2), a first screw rod (3), two moving blocks (4) and two clamping arms (5); the two ends of the first screw rod (3) are rotatably connected to the box body (1); the output shaft end of the first motor (2) is transmission-connected to the first screw rod (3); two threaded areas in opposite directions are engraved on the outer wall of the first screw rod (3); the two threaded areas of the first screw rod (3) are respectively threadedly connected to the two moving blocks (4); and the two clamping arms (5) are respectively arranged on the two moving blocks (4); The extrusion anti-skid assembly comprises a second motor (6), an extrusion plate (9), and an anti-skid plate (14); the second motor (6) is fixedly mounted inside the box (1); the second motor (6) is respectively connected to the extrusion plate (9) and the anti-skid plate (14); the extrusion plate (9) is transversely arranged on the box (1); the extrusion plate (9) extrudes the steel structure located on one side of the box (1) after being transversely moved; the anti-skid plate (14) is longitudinally arranged on the box (1); the anti-skid plate (14) is anti-skid fixed to the ground after being longitudinally moved; The control board is electrically connected to the strain sensor, the first motor (2) and the second motor (6) respectively through wires.

2. A post-fire steel structure safety detection device according to claim 1, characterized in that: The extrusion anti-skid assembly also includes a second screw rod (7) and a moving cylinder (8), one end of the second screw rod (7) is coaxially fixedly connected to the output shaft end of the second motor (6), the moving cylinder (8) is slidably connected to the inner wall of the box body (1), and one end of the moving cylinder (8) is sleeved on the other end of the second screw rod (7), the moving cylinder (8) is threadedly connected to the second screw rod (7), and the other end of the moving cylinder (8) is fixedly connected to a side wall of the extrusion plate (9).

3. A post-fire steel structure safety detection device according to claim 2, characterized in that: The extrusion anti-skid assembly further comprises a first gear (11), a third screw rod (12), and a sleeve (13); the third screw rod (12) passes through the first gear (11), and the third screw rod (12) is fixedly connected to the first gear (11); the middle part of the third screw rod (12) is rotatably connected to the box body (1); the lower outer wall of the third screw rod (12) is engraved with a threaded area; the upper end of the sleeve (13) is sleeved on the lower end of the third screw rod (12); the third screw rod (12) is threadedly connected to the sleeve (13); and the lower end of the sleeve (13) is fixedly connected to the anti-skid plate (14).

4. A post-fire steel structure safety detection device according to claim 3, characterized in that: A first rack (10) is fixedly connected to the outer wall of the moving cylinder (8), and the first rack (10) is meshed with a first gear (11).

5. A post-fire steel structure safety detection device according to claim 2, characterized in that: The extrusion anti-skid assembly also includes a second rack (15), a second gear (16), a connecting column (17), and a connecting rod (19); the second rack (15) is fixedly connected to the outer wall of the moving cylinder (8); the second gear (16) is rotatably arranged on the box body (1); the second rack (15) is meshed with the second gear (16); the connecting column (17) is fixedly connected to a side wall of the second gear (16) away from the axis; the second gear (16) is transmission-connected to the connecting rod (19) through the connecting column (17); the lower end of the connecting rod (19) is hinged to the anti-skid plate (14); and the upper part of the anti-skid plate (14) is slidably connected to the box body (1).

6. A post-fire steel structure safety detection device according to claim 5, characterized in that: The upper end of the connecting rod (19) is fixedly connected to a connecting ring (18), and the end of the connecting column (17) away from the second gear (16) passes through the connecting ring (18).

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