High-temperature-resistant concrete material fire damage field testing device

Abstract

The utility model discloses a high-temperature-resistant concrete material fire hazard damage field testing device, which relates to the field of post-fire concrete material mechanical property detection, and comprises an injector, an injector launching device and an injector forcing device, and the front end of the injector launching device is provided with an injector clamping device; the penetrometer is installed on the penetrometer clamping device, a handle is arranged at the tail end of the penetrometer launching device, a firing pin pull rod is arranged in the penetrometer launching device, the penetrometer forcing device is arranged on the handle and comprises a forcing frame, a sliding block and a manual sliding block driving mechanism, the sliding block is arranged in the sliding block driving mechanism, the forcing frame is arranged on the surface of the sliding block, and the manual sliding block driving mechanism is arranged on the surface of the penetrometer launching device. The top end of the firing pin pull rod is provided with a hook corresponding to the groove, and the firing pin pull rod is connected with the stress application frame in a hooked mode through the hook. According to the utility model, the on-site damage test can be carried out on the concrete material of the concrete building structure in fire, and the test result can be used as the basis for judging whether the concrete building structure is safe or not after fire damage.

Description

Technical Field

[0001] The utility model belongs to the field of mechanical property testing of concrete materials after fire, and particularly relates to a high-temperature resistant concrete material fire damage on-site testing device. Background Art

[0002] Concrete structures are the predominant structural form in my country's industrial and residential buildings. In recent years, cases of concrete building collapses during fires have become common. Building fires can be affected by the dense smoke produced, but traditional methods such as observation and imaging lack the necessary conditions and evidence to determine whether a building will collapse. Fires can occur internally, making remote observation techniques unsatisfactory. Certain building structures collapse suddenly during fires, with no obvious signs observed beforehand. For fires occurring within concrete structures, in-situ damage testing of the affected concrete can be performed. By directly measuring the strength loss of fire-damaged concrete, the bearing capacity of components can be quickly determined. These test results can be used to determine the safety of fire-damaged concrete structures. However, there is currently no testing equipment specifically designed for use in concrete fire scenes, making it difficult to quickly determine the safety of fire-damaged concrete structures.

[0003] Therefore, there is an urgent need for a high-temperature resistant concrete material fire damage field testing device to facilitate on-site testing of fire-damaged concrete materials. Utility Model Content

[0004] In view of this, the utility model provides a high-temperature resistant concrete material fire damage on-site testing device, which can perform on-site damage testing on concrete materials of concrete building structures that have caught fire. The test results can be used as a basis for determining whether the concrete building structure is safe after fire damage, and provide a basis for judgment when on-site rescue personnel conduct "internal attack" and other fire fighting and rescue operations during fire fighting and rescue.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A field testing device for fire damage of high-temperature resistant concrete materials includes a penetrator, a penetrator launcher and a penetrator force device. The front end of the penetrator launcher is provided with a penetrator clamping device, and the penetrator is installed on the penetrator clamping device. The tail end of the penetrator launcher is provided with a handle, and a striker pull rod is provided inside. The penetrator force device is provided on the handle. The penetrator force device includes a force frame, a slider and a manual slider driving mechanism. The slider is provided in the manual slider driving mechanism, and the force frame is provided on the surface of the slider. A groove is provided on the force frame. A hook is provided at the top of the striker pull rod corresponding to the groove, and the striker pull rod is hooked with the force frame through the hook.

[0007] Furthermore, the manual slider driving mechanism includes a positioning plate, a slide, a mounting plate, a slide rod, a force screw, a rotating wheel and a handle, the positioning plate is arranged on the handle, the slide is arranged between the positioning plate and the mounting plate, the force screw and the slide rod are both arranged above the positioning plate, the slide rod is located on both sides of the force screw, the slider is slidably arranged in the slide rod, the slider is threadedly connected to the force screw, one end of the force screw is rotatably connected to the positioning plate, the mounting plate is provided with a through hole corresponding to the force screw, the other end of the force screw passes through the mounting plate through the through hole, the rotating wheel is installed at the end of the force screw, and the handle is installed on the rotating wheel.

[0008] Furthermore, the penetrator launching device includes a driving device and a launcher, the driving device includes an outer sleeve, an inner sleeve, a stiffening spring, a spring pressure block and a firing pin, the inner sleeve is fixedly arranged in the outer sleeve, the launcher and the handle are arranged on the outer sleeve, the launcher is located below the handle, the spring pressure block is fixed in the middle of the inner sleeve, the middle of the spring pressure block is provided with a through hole, the stiffening spring and the firing pin are slidably arranged in the inner sleeve, one end of the stiffening spring is fixed to the spring pressure block, the other end of the stiffening spring is fixed to the firing pin, the bottom end of the firing pin pull rod is fixed on the firing pin, and the top end of the firing pin pull rod passes through the spring and the spring pressure block and extends out of the inner sleeve.

[0009] Furthermore, the launcher includes a trigger, a lever structure and a launcher bracket, the trigger and the lever structure are arranged in the launcher bracket, a hinge hole is provided in the middle of the lever structure, the lever structure is rotatably arranged in the launcher bracket, the firing pin pull rod is provided with a slot corresponding to the lever structure, the trigger is arranged on the toggling side of the lever structure, and the firing pin pull rod is arranged on the hook center side of the lever structure.

[0010] Furthermore, the trigger is hinged in the launcher bracket, and the hinged sleeve of the trigger is provided with a torsion spring for resetting the trigger.

[0011] Furthermore, the penetrator clamping device is a three-petal clamping structure, and a locking buckle for rotating and adjusting the tightness is provided on the outer side of the three-petal clamping structure.

[0012] Furthermore, the penetrator is needle-shaped, a scale is provided on the penetrator, and a surface of the penetrator is coated with fluorescent material.

[0013] The beneficial effects of the present invention are as follows: the present invention adopts a manually driven penetrator boosting device, which fires the penetrator into the concrete material through the penetrator launching device, and no longer uses an electric or pneumatic driving structure, which can meet the use requirements in high temperature environments. The boosting device using a rotary wheel connected to a boosting screw realizes the requirements of labor-saving and fast boosting of the penetrator. The present invention can perform on-site damage tests on concrete materials of concrete building structures that have been hit by fire, and the test results can be used as a basis for determining whether the concrete building structure is safe after fire damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the utility model;

[0015] Figure 2 It is a front view of the utility model;

[0016] Figure 3 This is a top view of the utility model;

[0017] Figure 4 This is the left side view of the utility model;

[0018] Figure 5 This is a cross-sectional view of the penetrator launching device of the utility model;

[0019] Figure 6 Schematic diagram of the penetrometer structure.

[0020] In the picture:

[0021] 1-Penetrant, 1.1-Scale mark, 1.2-Digital mark, 1.3-Fluorescent material, 2-Penetrant launcher, 2.1-External sleeve, 2.2-Inner sleeve, 2.3-Penetrant clamping device, 2.4-Locking buckle, 2.5-Strinning spring, 2.6-Firing pin, 2.7-Firing pin pull rod, 2.8-Spring pressure block, 2.9-Launcher bracket, 2.10-Trigger, 2.11-Lever structure, 2.12-Handle, 2.13-Slot, 3-Force device, 3.1-Positioning plate, 3.2-Slide, 3.3-Slide rod, 3.4-Slider, 3.5-Force screw, 3.6-Force frame, 3.7-Wheel, 3.8-Handle, 3.9-Mounting plate. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0023] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "horizontal", "inner", "outer", "one side", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, they should not be understood as limiting the present invention. The terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, they can be fixed connections, detachable connections, or integral connections; they can be mechanical connections or circuit connections; they can be direct connections, indirect connections through an intermediate medium, or internal connections between two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] Example 1

[0025] like Figures 1 to 6 As shown, this embodiment discloses a high-temperature resistant concrete material fire damage field testing device, which includes three components: a penetrator 1, a penetrator launcher 2 and a penetrator force device 3, all of which are made of 304 stainless steel.

[0026] The front end of the penetrometer launcher 2 is provided with a penetrometer clamping device 2.3. The penetrometer clamping device 2.3 has a three-petal clamping structure. By rotating the locking buckle 2.4 on the outside of the three-petal clamping structure clockwise or counterclockwise, the penetrometer clamping device 2.3 can clamp or release the penetrometer 1. In this embodiment, the penetrometer 1 is a nail-shaped structure. Length scale markings 1.1 and length number markings 1.2 are engraved on the penetrometer 1 in 0.5mm units. The surface of the penetrometer 1 is coated with a fluorescent material 1.3 to enable testers to distinguish the engraved scale and numbers in a dark environment.

[0027] The principle of the penetrator launching device 2 is to use a stiffening spring 2.5 to apply a penetration force to the penetrator 1. The penetrator launching device 2 includes a driving device and a launcher. The launcher installed on the driving device can trigger the firing pin 2.6 to launch the penetrator 1. Specifically, the driving device includes an external sleeve 2.1, an internal sleeve 2.2, a stiffening spring 2.5, a spring pressure block 2.8 and a firing pin 2.6. The internal sleeve 2.2 is fixedly arranged in the external sleeve 2.1. A handle 2.12 is provided on the external sleeve 2.1 for the user to hold when applying the penetration force. The spring pressure block 2.8 is fixed in the middle of the internal sleeve 2.2, and a through hole is provided in the middle of the spring pressure block 2.8. The stiffening spring 2.5 and the firing pin 2.6 are slidably arranged in the internal sleeve 2.2. One end of the stiffening spring 2.5 is fixedly connected to the spring pressure block 2.8, and the other end of the stiffening spring 2.5 is fixedly connected to the firing pin 2.6. In this embodiment, the stiffening spring 2.5 is used to provide a stiffening force of not less than 1000N. The bottom end of the firing pin pull rod 2.7 is fixed on the firing pin 2.6, and the top end of the firing pin pull rod 2.7 passes through the spring and the spring pressure block 2.8 and extends out of the internal sleeve 2.2.

[0028] The launcher is mounted on the external sleeve 2.1 below the handle 2.12. The launcher includes a trigger 2.10, a lever structure 2.11 and a launcher bracket 2.9. The trigger 2.10 and the lever structure 2.11 are both rotatably arranged in the launcher bracket 2.9. A hinge hole is provided in the middle of the lever structure 2.11. The firing pin pull rod 2.7 is provided with a slot 2.13 corresponding to the lever structure 2.11. The trigger 2.10 is arranged on the toggle side of the lever structure 2.11. The hinged sleeve of the trigger 2.10 is provided with a torsion spring for resetting the trigger 2.10. The firing pin pull rod 2.7 is arranged on the hook center side of the lever structure 2.11.

[0029] The penetrator force device 3 is arranged on the handle 2.12. The penetrator force device 3 in this embodiment adopts a rotary mechanical structure. Specifically, the penetrator force device 3 includes a force frame 3.6, a slider 3.4 and a manual slider drive mechanism. The slider 3.4 is arranged in the manual slider drive mechanism. The force frame 3.6 is arranged on the surface of the slider 3.4. A groove is provided on the force frame 3.6. The top end of the striker pull rod 2.7 extending out of the internal sleeve 2.2 is provided with a hook corresponding to the groove, and the striker pull rod 2.7 is hooked with the force frame 3.6 through the hook.

[0030] The manual slider driving mechanism includes a positioning plate 3.1, a slide 3.2, a mounting plate 3.9, a slide rod 3.3, a force screw 3.5, a rotating wheel 3.7 and a handle 3.8. The positioning plate 3.1 is arranged on the handle 2.12, the slide 3.2 is arranged between the positioning plate 3.1 and the mounting plate 3.9, the force screw 3.5 and the slide rod 3.3 are both arranged above the positioning plate 3.1, the slide rod 3.3 is located on both sides of the force screw 3.5, and the slider 3.4 is slidably arranged in the slide rod 3.3. The force screw 3.5 in this embodiment is a threaded shaft, the slider 3.4 is threadedly connected to the force screw 3.5, one end of the force screw 3.5 is rotatably connected to the positioning plate 3.1, the mounting plate 3.9 is provided with a through hole corresponding to the force screw 3.5, the other end of the force screw 3.5 passes through the mounting plate 3.9 through the through hole, the rotating wheel 3.7 is installed at the end of the force screw 3.5, and the handle 3.8 is installed on the rotating wheel 3.7. When the handle 3.8 on the rotating wheel 3.7 connected to the force-adding screw 3.5 is manually rotated clockwise or counterclockwise, the force-adding spring 2.5 can be tightened or loosened.

[0031] The components of the device of the present invention are all made of 304 stainless steel and are suitable for use in high-temperature environments of buildings where fire occurs. When testing is required, the penetrometer 1 is first clamped using the penetrometer clamping device 2.3, and the force screw 3.5 is rotated by the rotating wheel 3.7 to move the slider 3.4 upward, driving the striker pull rod 2.7 upward, realizing the compression of the stiffening spring 2.5, and driving the striker 2.6 to move upward synchronously. When the slot 2.13 moves to the lever mechanism 2.11, the hook side of the lever mechanism 2.11 enters the slot 2.13 under the push of the trigger 2.10, realizing the stiffening of the penetrometer launching device 2, and then the test device is moved to the surface of the concrete component to be tested, and the trigger 2.10 is pulled, and the striker 2.6 quickly impacts the penetrometer 1, and the penetrometer 1 is shot into the concrete component.

[0032] The present invention utilizes a force-adding device, comprising a rotating wheel 3.7 connected to a force-adding screw 3.5, to achieve the goal of labor-saving and rapid clamping and releasing of the penetrometer 1. Each time the penetrometer 1 is launched, it remains on the surface of the concrete member being tested, eliminating the need to remove the penetrometer 1. A new penetrometer 1 is re-clamped when the concrete penetration depth test is repeated. This testing method also speeds up the concrete penetration rate during each test.

[0033] Example 2

[0034] This embodiment discloses a testing method using a developed, high-temperature-resistant concrete material fire damage field testing device. This method is applicable to concrete structures with strengths of C20 to C60. This embodiment tests the penetration depth of concrete in both the fire-affected and non-fire-affected areas of similar areas of the concrete structure where the fire occurred (e.g., the middle of a concrete column, the mid-span of a concrete beam, etc.). The test location is within two-thirds of the column height in the middle of the concrete column. At least three test values ​​are taken for both the fire-affected and non-fire-affected areas, and the average penetration depth is calculated. By comparing the ratio of the two average penetration depths, based on the analysis results, when the ratio of the concrete penetration depths in the fire-affected and non-fire-affected areas is greater than or equal to a critical value, the concrete component can be determined to have suffered fire failure.

[0035] According to the analysis results, it can better reflect the structural damage of concrete building fires, and the test position is within the 2 / 3 column height range in the middle of the concrete column, which does not require excessive climbing and is convenient for fire fighting and rescue personnel to take the test point.

[0036] Although the above description of the specific implementation methods of the present invention is combined with the accompanying drawings, it does not limit the scope of protection of the present invention. Technical personnel in the relevant field should understand that on the basis of the technical solution of the present invention, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the present invention.

Claims

1. A high temperature resistant concrete material fire damage field testing device, characterized in that: It includes a penetrator, a penetrator launching device and a penetrator force device. The front end of the penetrator launching device is provided with a penetrator clamping device, and the penetrator is installed on the penetrator clamping device. The tail end of the penetrator launching device is provided with a handle, and a firing pin pull rod is provided inside. The penetrator force device is provided on the handle. The penetrator force device includes a force frame, a slider and a manual slider driving mechanism. The slider is provided in the manual slider driving mechanism. The force frame is provided on the surface of the slider. A groove is provided on the force frame. A hook is provided at the top end of the firing pin pull rod corresponding to the groove. The firing pin pull rod is hooked with the force frame through the hook.

2. The on-site testing device for fire damage of high-temperature resistant concrete materials according to claim 1, characterized in that: The manual slider driving mechanism includes a positioning plate, a slide, a mounting plate, a slide rod, a force screw, a rotating wheel and a handle, the positioning plate is arranged on the handle, the slide is arranged between the positioning plate and the mounting plate, the force screw and the slide rod are both arranged above the positioning plate, the slide rod is located on both sides of the force screw, the slider is slidably arranged in the slide rod, the slider is threadedly connected to the force screw, one end of the force screw is rotatably connected to the positioning plate, the mounting plate is provided with a through hole corresponding to the force screw, the other end of the force screw passes through the mounting plate through the through hole, the rotating wheel is installed at the end of the force screw, and the handle is installed on the rotating wheel.

3. The on-site testing device for fire damage of high-temperature resistant concrete materials according to claim 1, characterized in that: The penetrator launching device includes a driving device and a launcher, the driving device includes an outer sleeve, an inner sleeve, a stiffening spring, a spring pressure block and a firing pin, the inner sleeve is fixedly arranged in the outer sleeve, the launcher and the handle are arranged on the outer sleeve, the launcher is located below the handle, the spring pressure block is fixed in the middle of the inner sleeve, the middle of the spring pressure block is provided with a through hole, the stiffening spring and the firing pin are slidably arranged in the inner sleeve, one end of the stiffening spring is fixedly connected to the spring pressure block, the other end of the stiffening spring is fixedly connected to the firing pin, the bottom end of the firing pin pull rod is fixed on the firing pin, and the top end of the firing pin pull rod passes through the spring and the spring pressure block and extends out of the inner sleeve.

4. The on-site testing device for fire damage of high-temperature resistant concrete materials according to claim 3, characterized in that: The launcher includes a trigger, a lever structure and a launcher bracket. The trigger and the lever structure are arranged in the launcher bracket. A hinge hole is provided in the middle of the lever structure. The lever structure is rotatably arranged in the launcher bracket. The firing pin pull rod is provided with a slot corresponding to the lever structure. The trigger is arranged on the toggling side of the lever structure, and the firing pin pull rod is arranged on the hook center side of the lever structure.

5. The on-site testing device for fire damage of high-temperature resistant concrete materials according to claim 4, characterized in that: The trigger is hinged in the launcher bracket, and the hinged sleeve of the trigger is provided with a torsion spring for resetting the trigger.

6. The on-site testing device for fire damage of high-temperature resistant concrete materials according to claim 1, characterized in that: The penetrator clamping device is a three-petal clamping structure, and a locking buckle for rotating and adjusting the tightness is provided on the outer side of the three-petal clamping structure.

7. The on-site testing device for fire damage of high-temperature resistant concrete materials according to claim 1, characterized in that: The penetrator is needle-shaped, a scale is provided on the penetrator, and a surface of the penetrator is coated with fluorescent material.

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