Mechanical performance testing device for fireproof door

Abstract

The utility model discloses a mechanical dynamics performance testing device for fireproof door, including the rectangular frame for fixing the fireproof door of being tested, still include the independent anti static distortion mechanism of cooperation use, and the anti static distortion mechanism is used for carrying out anti static distortion performance test to fireproof door, and the anti static distortion mechanism includes walking mechanism, and walking mechanism is provided with clamping mechanism and transverse pressure assembly, adjusts the position of anti static distortion mechanism through walking mechanism to adapt to the test angle of fireproof door currently, clamping mechanism is used for clamping the rim of fireproof door, makes the test angle of fireproof door be fixed, and transverse pressure assembly is used for the lateral surface of the fixed fireproof door pressure, makes to fireproof door carries out anti static distortion performance test. The device is combined with the main body truss through independent anti static distortion mechanism and uses, can realize the flexible anti static distortion performance test to fireproof door, makes the tested fireproof door to be able to test under the arbitrary angle between opening 40 to 90 degrees.

Description

Technical Field

[0001] This utility model relates to the field of fire protection technology in engineering construction, and in particular to a mechanical performance testing device for fire doors. Background Technology

[0002] As a key component of fire-resistant building compartments, the mechanical properties of fire doors (such as resistance to static torsion, impact resistance, and resistance to vertical loads) directly affect their ability to effectively prevent the spread of smoke and fire during a fire, and are core indicators for evaluating their quality. Therefore, during the production and acceptance stages, fire doors must undergo rigorous mechanical testing according to relevant standards.

[0003] Currently, equipment used for testing the mechanical properties of fire doors has many shortcomings. In the crucial area of ​​static torsional resistance testing, existing equipment lacks versatility and flexibility. Traditional testing devices mostly employ fixed force-applying structures, with the force-applying point position being non-adjustable or having a limited adjustment range. Furthermore, current technology can only perform tests when the fire door is opened to 90 degrees. Simultaneously, such equipment is often designed for fire doors of specific sizes, making it difficult to adapt to products of different specifications, thus limiting its application scope.

[0004] In conclusion, developing a mechanical testing device for fire doors with flexible and precise adjustable test points has become an urgent technical problem to be solved in this field. Utility Model Content

[0005] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one objective of this utility model is to propose an integrated mechanical testing device for fire doors. This device, through the combination of an independent anti-static torsion mechanism and the main truss, can achieve flexible and convenient anti-static torsion performance testing of fire doors, solving the problems of single function and cumbersome operation of traditional equipment. It can also complete multiple mechanical performance tests such as anti-static torsion, impact resistance, and vertical load resistance at the same workstation, greatly improving testing efficiency and site utilization.

[0006] Another objective of this invention is to propose a test device with high-precision positioning and force application functions. Through the coordinated control of a magnetic fixing mechanism, a multi-directional moving mechanism, and programmable pneumatic and electric actuators, quantifiable static or dynamic loads can be accurately applied to different positions of the fire door. This solves the problems of inaccurate force application points and uncontrolled load values ​​in existing test methods, and ensures the reliability and repeatability of test data.

[0007] According to the present invention, a mechanical performance testing device for fire doors includes a rectangular frame for fixing the fire door to be tested. It also includes a complementary and independent anti-static torsion mechanism, which is used to conduct anti-static torsion performance tests on fire doors; the anti-static torsion mechanism includes a traveling mechanism, which is equipped with a clamping mechanism and a lateral pressure component; the position of the anti-static torsion mechanism is adjusted by the traveling mechanism to adapt to the current test angle of the fire door; The clamping mechanism is used to clamp the edge of the fire door, so that the test angle of the fire door is fixed. The lateral pressure application component is used to apply pressure to the side of the fixed fire door, so as to conduct a static torsion performance test on the fire door.

[0008] In some examples of this utility model, the walking mechanism includes a support plate, four universal wheels are fixed to the lower side of the support plate, and a handle frame is fixed to the support plate; a magnetic fixing mechanism is also provided on the support plate, which is used to fix the working position of the anti-static torsion mechanism.

[0009] In some examples of this utility model, the magnetic fixing mechanism includes two opposing fixed seats. A lifting seat is fixed to the inner side of the fixed seat via a vertically arranged first linear slide rail. The lower side of the lifting seat passes through a support plate. A connecting seat is fixed between the upper ends of the two lifting seats. A lifting motor is fixed inside the connecting seat. A lifting shaft is fixed to the output end of the lifting motor. The lifting shaft is screwed to a first bushing fixed on the support plate. The lifting motor drives the lifting shaft to move up and down, thereby driving the lifting seats to move up and down. An electromagnet is fixed to the lower side of the lifting seat.

[0010] In some examples of this utility model, a ground steel plate for use in conjunction with an electromagnet is also provided below the anti-static torsion mechanism.

[0011] In some examples of this utility model, the clamping mechanism includes a stand fixed to the sides of the two lifting seats. A clamping seat is provided on the upper end of the stand and the side facing the fire door. A clamping cylinder is fixed to the outside of the clamping seat. The output end of the clamping cylinder extends into the clamping seat and is fixed with a first clamping plate. A second clamping plate is fixed to the outside of the other end of the clamping seat. The fire door is clamped between the first clamping plate and the second clamping plate.

[0012] In some examples of this utility model, the clamp is fixed to the inner side of the upper end of the upright by a second linear slide rail, and a vertically arranged lifting cylinder is fixed to the outer side of the upper end of the upright. A connecting frame is fixed to the output end of the lifting cylinder, and the extension end of the connecting frame is fixedly connected to the clamp.

[0013] In some examples of this utility model, the lateral pressure assembly includes a cylinder seat fixed to the connecting seat, a lateral pressure cylinder fixed to the outside of the cylinder seat, and the output end of the lateral pressure cylinder extending to the inside of the cylinder seat and fixed with a first pressure block.

[0014] In some examples of this utility model, a main truss fixed to the top side of a rectangular frame is also included. A portion of the main truss extends outside the rectangular frame to form a suspension section. An impact test mechanism and a vertical load test mechanism are provided on the suspension section. The impact test mechanism includes a lifting shaft and a tie shaft slidably disposed on the suspension section. A first winch is provided on the lower side of the lifting shaft, and a second winch is provided on the lower side of the tie shaft. The output ends of the first winch and the second winch are connected to the same impact object.

[0015] In some examples of this utility model, the vertical load testing mechanism includes a vertical pressure shaft slidably disposed on the suspension part. The vertical pressure shaft is located between the lifting shaft and the inclined pull shaft. An electric cylinder is disposed on the lower side of the vertical pressure shaft. The electric cylinder is used to drive the slide to perform vertical lifting and lowering movements. A vertical pressure cylinder is fixed inside the slide. The output end of the vertical pressure cylinder extends downward to the outside of the slide and is fixed with a second pressure block.

[0016] In some examples of this utility model, the lifting shaft, the inclined shaft, and the vertical pressure shaft are adjusted in the longitudinal position by a longitudinal moving mechanism; the first winch, the second winch, and the electric cylinder are adjusted in the lateral position by a lateral moving mechanism.

[0017] 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.

[0018] The beneficial effects of this utility model are: This invention adopts a structure of a fixed frame plus an independent anti-static torsion mechanism. The anti-static torsion mechanism, as an autonomous unit integrating movement, fixing, clamping and pressure functions, can be flexibly moved to any position on the fire door frame and firmly fixed, thereby realizing the anti-static torsion performance test when the door leaf is opened from 40 to 90 degrees. This greatly improves the test coverage and the versatility of the device, and also makes it adaptable to fire doors of different sizes and models. The device also integrates an impact test mechanism and a vertical load test mechanism supported by the main truss above the fixed frame. Through precise longitudinal and lateral movement mechanisms, the impact point and vertical pressure point can be accurately positioned, and multiple test modes can be quickly switched and accurately executed without manual intervention. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure according to an embodiment of the present utility model; Figure 2 This is a schematic diagram of the anti-static torsion mechanism; Figure 3 for Figure 2 Enlarged view of point A in the image; Figure 4 for Figure 2 Enlarged view of point B in the image; Figure 5 This is a structural diagram of the main truss, impact test mechanism, and vertical load test mechanism.

[0021] Explanation of reference numerals in the attached figures: Rectangular frame-1; Anti-static torsion mechanism-2; Bearing plate-3; Handrail frame-4; Fixed seat-5; Lifting seat-6; Connecting seat-7; Lifting shaft-8; Electromagnet-9; Ground steel plate-10; Upright frame-11; Clamping seat-12; Clamping cylinder-13; First clamping plate-14; Second clamping plate-15; Lifting cylinder-16; Connecting frame-17; Cylinder seat-18; Lateral pressure cylinder-19; First pressure block-20; Main truss-21; Lifting shaft-22; Inclined pull shaft-23; First winch-24; Second winch-25; Limit seat-26; Vertical pressure shaft-27; Electric cylinder-28; Slide seat-29; Vertical pressure cylinder-30; Second pressure block-31; Connecting rod-32; First motor seat-33; First longitudinal motor-34; First rotating shaft-35; First bearing seat-36; Horizontal motor-37; Third rotating shaft-38; Fourth bearing seat-39; Connecting piece-40. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 based on the specific circumstances.

[0025] 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 are only used to explain this utility model, and should not be construed as limiting this utility model.

[0026] The following is for reference. Figures 1 to 5 A mechanical performance testing device for fire doors according to an embodiment of the present utility model is described, including a rectangular frame 1 for fixing the fire door to be tested; It also includes a separate anti-static torsion mechanism 2 used in conjunction with the fire door, the anti-static torsion mechanism 2 being used to conduct an anti-static torsion performance test on the fire door; the anti-static torsion mechanism 2 includes a traveling mechanism, the traveling mechanism being provided with a clamping mechanism and a lateral pressure component; the position of the anti-static torsion mechanism 2 is adjusted by the traveling mechanism to adapt to the current test angle of the fire door; The clamping mechanism is used to clamp the edge of the fire door, so that the test angle of the fire door is fixed. The lateral pressure-applying component is used to apply pressure to the sides of the fixed fire door, thereby conducting a static torsion resistance test on the fire door. Using this static torsion resistance mechanism 2, the fire door under test can be tested at any angle between 40 and 90 degrees of opening.

[0027] This embodiment employs a modular design with a fixed frame and an independent anti-static torsion mechanism. The rectangular frame 1 provides a stable installation base for the fire door, while the independent anti-static torsion mechanism 2 serves as a movable and fixed testing terminal. The greatest advantage of this separate design lies in its flexibility. The anti-static torsion mechanism 2 can be moved to any position on the fire door frame for clamping and pressure application as needed, thereby enabling the testing of the anti-static torsion performance of different parts of the fire door and overcoming the limitation of traditional equipment that can only test fixed points. Furthermore, the anti-static torsion mechanism is independent of the frame, allowing the device to easily adapt to fire doors of different sizes and models, making it highly versatile. To test the anti-static torsion performance of the fire door when it is open, the anti-static torsion mechanism 2 adopts an independent structure, facilitating testing when the fire door is open at angles from 40 to 90 degrees, resulting in more accurate test data. The walking mechanism of the anti-static torsion mechanism 2 can also use a tracked chassis to enhance its passability on rough ground. In addition, the lateral pressure application component can be replaced with an electric push rod or a hydraulic cylinder, in addition to a pneumatic cylinder, to provide greater or more precise thrust.

[0028] Specifically, the rectangular frame 1 is welded from steel profiles, and its internal space is larger than that of the fire door under test. The walking mechanism of the anti-static torsion mechanism 2 enables it to move. Its clamping mechanism is used to firmly grip the vertical edge of the fire door, while the lateral pressure component is used to simulate lateral force conditions.

[0029] Please continue reading Figure 2 As shown, according to one embodiment of the present invention, the fire door is tested when it is opened at 45 degrees. The walking mechanism includes a support plate 3, four universal wheels are fixed on the lower side of the support plate 3, and a handle frame 4 is fixed on the support plate 3. A magnetic fixing mechanism is also provided on the support plate 3, which is used to fix the working position of the anti-static torsion mechanism 2.

[0030] Furthermore, four omnidirectional casters ensure that the anti-static torsion mechanism can be easily moved in any direction, and the handle 4 facilitates manual pushing and turning. The magnetic fixing mechanism is crucial for maintaining absolute stability of the anti-static torsion mechanism during testing. Once the anti-static torsion mechanism is moved to the designated position, activating this mechanism generates a strong magnetic force to firmly fix it to the ground, preventing movement during pressure application and ensuring the accuracy and safety of the test. Besides magnetic fixing, mechanical fixing can also be used, such as manually unscrewing support pads at the four corners of the support plate 3, which are then tightened to the ground with screws for fixation.

[0031] Specifically, the caster wheel is equipped with brake pads for initial locking.

[0032] Please continue reading Figures 2 to 3 As shown, according to one embodiment of this utility model, the magnetic fixing mechanism includes two opposing fixed seats 5. A lifting seat 6 is fixed to the inner side of each fixed seat 5 via a vertically arranged first linear slide rail. The lower side of the lifting seat 6 passes through a bearing plate 3. A connecting seat 7 is fixed between the upper ends of the two lifting seats 6. A lifting motor is fixed inside the connecting seat 7. A lifting shaft 8 is fixed to the output end of the lifting motor. The lifting shaft 8 is screwed onto a first bushing fixed to the bearing plate 3. The lifting motor drives the lifting shaft to move up and down, thereby causing the lifting seats 6 to move up and down. An electromagnet 9 is fixed to the lower side of each lifting seat 6. A ground steel plate 10, which cooperates with the electromagnet 9, is also provided below the anti-static torsion mechanism 2.

[0033] Furthermore, the lifting seat 6 and the connecting seat 7 can be an integrally formed structure, or they can be assembled and fixed from several plate-like structures, making the formed seat more stable. The lifting drive can also use a hydraulic cylinder or a pneumatic cylinder to achieve rapid lifting. The electromagnet 9 can also use a permanent magnet chuck, but it requires a matching unlocking mechanism to counteract the magnetic force.

[0034] When not in operation, electromagnet 9 can be raised to avoid damage from friction with the ground. During operation, it is lowered close to the ground steel plate 10 to achieve maximum magnetic attraction. The motor-driven screw lifting system provides smooth transmission, good self-locking, and reliable maintenance of the lifting position. Linear guide rails ensure smooth and precise lifting; the ground steel plate 10 is a key component of the magnetic fixing mechanism. Electromagnet 9 requires a material with good magnetic permeability, such as low-carbon steel, to generate sufficient attraction. Pre-laid ground steel plate 10 ensures reliable fixation of the anti-static torsion mechanism 2 regardless of whether the site surface is cement, epoxy flooring, or other non-magnetic materials. This greatly enhances the adaptability of the device to different sites. If the test site is fixed, the ground steel plate 10 can be permanently embedded in the ground, making its upper surface flush with the ground, facilitating the movement of the anti-static torsion mechanism.

[0035] Specifically, the first linear guide rail is preferably a heavy-duty ball bearing linear guide rail. The lifting motor is a servo motor or stepper motor with a reducer to achieve precise control.

[0036] Please continue reading Figure 2 , Figure 4 As shown, according to one embodiment of the present invention, the clamping mechanism includes a stand 11 fixed to the sides of the two lifting seats 6. A clamping seat 12 is provided on the upper end of the stand 11 and the side facing the fire door. A clamping cylinder 13 is fixed to the outside of the clamping seat 12. The output end of the clamping cylinder 13 extends into the clamping seat 12 and is fixed with a first clamping plate 14. A second clamping plate 15 is fixed to the outside of the other end of the clamping seat 12. The fire door is clamped between the first clamping plate 14 and the second clamping plate 15.

[0037] The clamping cylinder 13 provides a stable clamping force, while the first and second clamping plates 14 and 15 increase the contact area to prevent damage to the door frame. Directly mounting the clamping mechanism on the lifting base 6 means that once the anti-static torsion mechanism 2 is fixed, the entire clamping mechanism is also rigidly fixed, providing a stable reaction force basis for subsequent lateral pressure application. The clamping power can be replaced with a hydraulic cylinder or an electric push rod. The clamping plates can be designed with a V-shaped opening to accommodate door frames of different thicknesses.

[0038] Specifically, the clamping surfaces of the first clamping plate 14 and the second clamping plate 15 can be inlaid with soft materials such as copper or nylon to protect the surface of the fire door.

[0039] Please continue reading Figure 3 As shown, according to one embodiment of the present invention, the clamp 12 is fixed to the inner side of the upper end of the upright 11 by a second linear slide rail, and a vertically arranged lifting cylinder 16 is fixed to the outer side of the upper end of the upright 11. A connecting frame 17 is fixed to the output end of the lifting cylinder 16, and the extension end of the connecting frame 17 is fixedly connected to the clamp 12.

[0040] Driven by the lifting cylinder 16, the height of the clamp 12 above the ground can be adjusted to accommodate fire doors of different heights, or to test different positions of the same door, thus expanding the testing range. A linear guide rail ensures the straightness and stability of the lifting motion. Height adjustment can also be achieved using a screw-nut mechanism driven by a motor for more precise position control.

[0041] Specifically, the lifting cylinder 16 is a cylinder with a guide rod to withstand a certain off-center load torque.

[0042] Please continue reading Figure 3As shown, according to one embodiment of the present invention, the transverse pressure assembly includes a cylinder seat 18 fixed on the connecting seat 7, a transverse pressure cylinder 19 fixed on the outside of the cylinder seat 18, and the output end of the transverse pressure cylinder 19 extends to the inside of the cylinder seat 18 and is fixed with a first pressure block 20.

[0043] The lateral pressure cylinder 19 applies force to the side of the clamped fireproof door leaf via the first pressure block 20. Since the clamping mechanism provides stable support, this thrust causes the door leaf to undergo lateral bending deformation, thus testing its torsional resistance. The point of application, the magnitude of the force, and the amount of deformation can all be precisely controlled and measured. The lateral pressure cylinder 19 can be replaced with a servo electric cylinder for even higher force control precision. The first pressure block 20 can be designed as a universal joint to ensure that the direction of force application is always perpendicular to the door surface.

[0044] Specifically, the pressure sensor can be installed at the cylinder rod end of the transverse pressure cylinder 19 or after the first pressure block 20 to monitor the pressure value in real time.

[0045] Please continue reading Figure 1 As shown, according to one embodiment of the present invention, it further includes a main truss 21 fixed to the top side of the rectangular frame 1. A portion of the main truss 21 extends outside the rectangular frame 1 to form a suspension portion. An impact test mechanism and a vertical load test mechanism are provided on the suspension portion. The impact test mechanism includes a lifting shaft 22 and a tie shaft 23 slidably disposed on the suspension portion. A first winch 24 is provided on the lower side of the lifting shaft 22, and a second winch 25 is provided on the lower side of the tie shaft 23. The output ends of the first winch 24 and the second winch 25 are connected to the same impacting object.

[0046] By coordinating the lifting shaft 22 and the inclined shaft 23, the lifting height and swing angle of the impactor can be precisely controlled to simulate different impact energies and angles. The two winches working in tandem can achieve complex impact trajectories, testing the performance of fire doors under impact from different directions. One device integrates multiple testing functions, greatly improving efficiency. The impact testing mechanism can be modified into a free-fall impact mechanism, conducting vertical impact tests by releasing hammers of varying weights.

[0047] Specifically, the impactor is a standard sandbag or impact head, the quality of which can be changed according to standard requirements. The winch uses a motor with a braking function. The main truss 21 is a rectangular frame, with a small portion located on the top side of the rectangular frame 1 and fixed by bolts, and further fixed by limiting plates and limiting seats 26. The majority of the main truss 21 extends to the outside of the rectangular frame 1 to form a suspended part.

[0048] Please continue reading Figure 5As shown, according to one embodiment of the present invention, the vertical load testing mechanism includes a vertical pressure shaft 27 slidably disposed on the suspension part. The vertical pressure shaft 27 is located between the lifting shaft 22 and the inclined pull shaft 23. An electric cylinder 28 is disposed on the lower side of the vertical pressure shaft 27. The electric cylinder 28 is used to drive the slide 29 to perform vertical lifting and lowering movements. A vertical pressure cylinder 30 is fixed inside the slide 29. The output end of the vertical pressure cylinder 30 extends downward to the outside of the slide 29 and is fixed with a second pressure block 31.

[0049] Electric cylinder 28 is used for rapid coarse positioning of the height of slide 29, while vertical pressure cylinder 30 is used to apply precise vertical pressure. This combination of electric and pneumatic cylinders balances speed adjustment and control accuracy. The entire vertical load mechanism can be replaced by a large-stroke, high-precision servo electric cylinder, simplifying the structure.

[0050] Specifically, the bottom surface of the second pressure block 31 is flat to ensure uniform pressure distribution. The slide 29 is equipped with a guide mechanism to ensure smooth movement of the vertical pressure cylinder 30.

[0051] Please continue reading Figure 5 As shown, according to one embodiment of the present invention, the lifting shaft 22, the inclined shaft 23 and the vertical pressure shaft 27 are adjusted in the longitudinal position by a longitudinal moving mechanism; the first winch 24, the second winch 25 and the electric cylinder 28 are adjusted in the lateral position by a lateral moving mechanism.

[0052] The longitudinal and lateral movement mechanisms allow for precise positioning of the impact point and vertical pressure point in a two-dimensional plane above the door leaf, eliminating the need for manual handling of bulky equipment. This makes the testing process programmable and repeatable, significantly improving accuracy and efficiency. The movement mechanism can utilize a linear motor for higher speed and precision positioning. In applications where high precision is less critical, adjustment can be achieved using a manual crank-driven lead screw.

[0053] Specifically, the longitudinal movement mechanism includes two third linear slide rails arranged parallel to the suspension part. The lifting shaft 22, the inclined pull shaft 23, and the vertical pressure shaft 27 are fixed to the sliders of the third linear slide rails. A connecting rod 32 is also fixed inside the main truss 21. A first motor base 33, a second motor base, and a third motor base are fixed on the connecting rod 32. A first longitudinal motor 34, a second longitudinal motor, and a third longitudinal motor are respectively fixed on the first motor base 33, the second motor base, and the third motor base. The output ends of the first longitudinal motor 34, the second longitudinal motor, and the third longitudinal motor are... The main truss 21 is fixed with a first rotating shaft 35, a second rotating shaft, and a third rotating shaft respectively. The upper outer side of the main truss 21 is also fixed with a first bearing seat 36, a second bearing seat, and a third bearing seat respectively, which are respectively arranged opposite to the first motor seat 33, the second motor seat, and the third motor seat. The extension ends of the first rotating shaft 35, the second rotating shaft, and the third rotating shaft are fixed in the first bearing seat 36, the second bearing seat, and the third bearing seat by bearings. The lifting shaft 22, the inclined shaft 23, and the vertical pressure shaft 27 are fixed with second bushings. The first rotating shaft 35, the second rotating shaft, and the third rotating shaft are respectively screwed to the corresponding second bushings.

[0054] The lateral movement mechanism includes an outer plate fixed to the outer end face of the lifting shaft 22, the inclined pull shaft 23, and the vertical pressure shaft 27 along their length. A lateral motor 37 is fixed to the outer plate, and a third rotating shaft 38 is fixed to the output end of the lateral motor 37. A fourth bearing seat 39 is fixed to the other end of the lifting shaft 22, the inclined pull shaft 23, and the vertical pressure shaft 27. The extension end of the third rotating shaft 38 is fixed to the fourth bearing seat 39 by a bearing. A sliding bushing is screwed onto the middle of the third rotating shaft 38, and a connecting piece 40 is fixed to the sliding bushing. A fourth linear slide rail is fixed to the lower side of the lifting shaft 22, the inclined pull shaft 23, and the vertical pressure shaft 27. The first winch 24, the second winch 25, and the electric cylinder 28 are fixed to the output ends of the corresponding fourth linear slide rails. The connecting piece 40 is fixedly connected to the first winch 24, the second winch 25, and the electric cylinder 28, respectively.

[0055] Working principle of this utility model: First, the fire door to be tested is installed and fixed on the rectangular frame 1, and then the fire door is opened to any angle from 40 to 90 degrees. Then, the anti-static torsion mechanism 2 is pushed to the predetermined test position on the fire door frame to fix the opening angle of the fire door. The lifting motor is started to drive the lifting shaft 8 to rotate, so that the electromagnet 9 fixed on the lower side of the lifting seat 6 is lowered to the ground steel plate 10 and energized, so that the anti-static torsion mechanism 2 is firmly attracted and fixed. Next, the lifting cylinder 16 is operated to drive the clamping seat 12 to rise and fall along the second linear slide rail to a suitable height. The clamping cylinder 13 is started to push the first clamping plate 14 and the second clamping plate 15 to clamp the edge of the fire door together. Then, the lateral pressure cylinder 19 is started to drive the first pressure block 20 to apply a lateral thrust to the clamped fire door leaf to conduct the anti-static torsion performance test. If an impact test is required, the longitudinal and lateral positions of the lifting shaft 22 and the inclined shaft 23 are adjusted to above the predetermined impact point using the longitudinal and lateral moving mechanisms. The first winch 24 and the second winch 25 then work together to pull and release the impacting object to strike the fire door. If a vertical load test is required, the vertical pressure shaft 27 is positioned to a designated point using the moving mechanism. The electric cylinder 28 drives the slide 29 to descend close to the door leaf, and then the vertical pressure cylinder 30 drives the second pressure block 31 to apply downward pressure, completing the vertical load test. After all tests are completed, all actuators are reset.

[0056] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0057] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A mechanical performance testing device for fire doors, comprising a rectangular frame for fixing the fire door under test, characterized in that: It also includes a complementary and independent anti-static torsion mechanism, which is used to conduct anti-static torsion performance tests on fire doors; the anti-static torsion mechanism includes a traveling mechanism, which is equipped with a clamping mechanism and a lateral pressure component; the position of the anti-static torsion mechanism is adjusted by the traveling mechanism to adapt to the current test angle of the fire door; The clamping mechanism is used to clamp the edge of the fire door, so that the test angle of the fire door is fixed. The lateral pressure application component is used to apply pressure to the side of the fixed fire door, so as to conduct a static torsion performance test on the fire door.

2. The mechanical performance testing device for fire doors according to claim 1, characterized in that: The walking mechanism includes a support plate, four omnidirectional wheels are fixed to the lower side of the support plate, and a handle frame is fixed to the support plate; a magnetic fixing mechanism is also provided on the support plate, which is used to fix the working position of the anti-static torsion mechanism.

3. The mechanical performance testing device for fire doors according to claim 2, characterized in that: The magnetic fixing mechanism includes two opposing fixed seats. A lifting seat is fixed to the inner side of the fixed seats via a vertically arranged first linear slide rail. The lower side of the lifting seat passes through a support plate. A connecting seat is fixed between the upper ends of the two lifting seats. A lifting motor is fixed inside the connecting seat. A lifting shaft is fixed to the output end of the lifting motor. The lifting shaft is screwed to a first bushing fixed on the support plate. The lifting motor drives the lifting shaft to move up and down, thereby driving the lifting seats to move up and down. An electromagnet is fixed to the lower side of the lifting seat.

4. The mechanical performance testing device for fire doors according to claim 3, characterized in that: Below the anti-static torsion mechanism is a ground steel plate used in conjunction with an electromagnet.

5. The mechanical performance testing device for fire doors according to claim 3, characterized in that: The clamping mechanism includes a stand fixed to the sides of the two lifting seats. A clamping seat is provided on the upper end of the stand and the side facing the fire door. A clamping cylinder is fixed to the outside of the clamping seat. The output end of the clamping cylinder extends into the clamping seat and is fixed with a first clamping plate. A second clamping plate is fixed to the outside of the other end of the clamping seat. The fire door is clamped between the first clamping plate and the second clamping plate.

6. The mechanical performance testing device for fire doors according to claim 5, characterized in that: The clamp is fixed to the inner side of the upper end of the upright by a second linear slide rail. A vertically arranged lifting cylinder is fixed to the outer side of the upper end of the upright. A connecting frame is fixed to the output end of the lifting cylinder. The extension end of the connecting frame is fixedly connected to the clamp.

7. The mechanical performance testing device for fire doors according to claim 3, characterized in that: The lateral pressure assembly includes a cylinder seat fixed to a connecting seat, a lateral pressure cylinder fixed to the outside of the cylinder seat, and the output end of the lateral pressure cylinder extending to the inside of the cylinder seat and fixed with a first pressure block.

8. The mechanical performance testing device for fire doors according to claim 1, characterized in that: It also includes a main truss fixed to the top side of the rectangular frame, a part of which extends outside the rectangular frame to form a suspension section. The suspension section is provided with an impact test mechanism and a vertical load test mechanism. The impact test mechanism includes a lifting shaft and a tie shaft slidably disposed on the suspension section. A first winch is disposed on the lower side of the lifting shaft, and a second winch is disposed on the lower side of the tie shaft. The output ends of the first winch and the second winch are connected to the same impact object.

9. The mechanical performance testing device for fire doors according to claim 8, characterized in that: The vertical load testing mechanism includes a vertical pressure shaft slidably mounted on the suspension part. The vertical pressure shaft is located between the lifting shaft and the inclined pull shaft. An electric cylinder is provided on the lower side of the vertical pressure shaft. The electric cylinder is used to drive the slide to perform vertical lifting and lowering movements. A vertical pressure cylinder is fixed inside the slide. The output end of the vertical pressure cylinder extends downward to the outside of the slide and is fixed with a second pressure block.

10. The mechanical performance testing device for fire doors according to claim 9, characterized in that: The lifting shaft, the inclined shaft, and the vertical pressure shaft are adjusted in the longitudinal position by a longitudinal moving mechanism; the first winch, the second winch, and the electric cylinder are adjusted in the lateral position by a lateral moving mechanism.

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