Glowing filament tester for testing fire resistance of building materials

Abstract

The utility model relates to the technical field of glowing filament testers, and discloses a glowing filament tester for testing the flame retardance of building materials, which comprises an operation table, a glowing filament is fixedly connected to the top end face of the operation table, and a clamping assembly is arranged on the top end face of the operation table. According to the glowing filament tester for testing the flame retardance of the building materials, through the arrangement of the clamping assembly, the connecting plate, the first rubber pad and the second rubber pad, a heat source and the clamping assembly are physically isolated, heat conduction is prevented, it is ensured that the positioning effect of a clamp is not invalid due to thermal expansion and cold contraction, and meanwhile overheating deformation or aging of a clamping structure can be avoided; compared with traditional threaded clamping, the clamping speed is higher, tightening is not needed, the device can automatically adapt to material plates with different thicknesses through the arranged clamping mold, compatibility is higher, and clamping of the material plates with different sizes is achieved by replacing different clamping molds.

Description

TECHNICAL FIELD

[0001] The utility model relates to a hot wire tester technical field, concretely is a kind of hot wire tester for building material flame retardance test. BACKGROUND

[0002] Hot wire tester is a kind of special test equipment for evaluating the risk of fire of material under the contact of heat source, is widely used in the field such as building material, the equipment simulates the effect of hot component or overload resistance and other heat sources, detects hot wire ignition temperature and hot wire combustibility of material, to evaluate its combustibility, safety and heat resistance.

[0003] According to the hot wire tester of one public (announcement number: CN220170968U), in the above application, including base, base is equipped with hot wire, base is slidably connected with clamp at the end away from hot wire, clamp and base are equipped with traction mechanism that can pull clamp to move towards hot wire, clamp includes clamp seat, clamp seat is equipped with clamping box, clamping box is slidably connected with backboard.

[0004] But the above-mentioned equipment in actual use, need to rotate adjusting screw, and then realize the fixation and disassembly of sample, if sample is frequently replaced in experimental process, it is high in repeatability, waste time, in view of this, we propose a kind of hot wire tester for building material flame retardance test. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of hot wire tester for building material flame retardance test to solve the problems raised in the above background.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of hot wire tester for building material flame retardance test, including operation platform, the top end surface of operation platform is fixedly connected with hot wire, the top end surface of operation platform is provided with clamping assembly, the clamping assembly includes:

[0007] Servo motor, the output of servo motor is fixedly connected with screw rod, the lateral wall of screw rod is threadedly connected with threaded block, the top end surface of threaded block is fixedly connected with fixed seat, the lateral wall of fixed seat is equipped with notch;

[0008] Clamping seat, the inner wall of clamping seat is equipped with positioning groove, the inner wall of positioning groove is fixedly connected with magnetic sheet, the lateral wall of clamping seat is sleeved with movable rod, the end surface of movable rod is fixedly connected with clamping plate, the lateral wall of movable rod is sleeved with spring;

[0009] Clamping mould, the lateral wall of clamping mould is sleeved with positioning block, the inner wall of clamping mould is fixedly connected with connecting plate, the inner wall of connecting plate is inserted with elastic arc piece.

[0010] Preferably, the servo motor is fixedly connected to the bottom end face of the operating table, and a horizontal groove one is formed in the top end face of the operating table and is in sliding connection with the threaded block.

[0011] Preferably, the side wall of the clamping seat is fixedly connected with a horizontal rod, the horizontal rod is in movable connection with the notch, the inner wall of the clamping seat is fixedly connected with a rubber pad one, and the top end face of the clamping seat is fixedly connected with a guide arc plate two.

[0012] Preferably, the top end of the clamping plate is fixedly connected with a guide arc plate one, the side of the clamping plate close to the inside of the clamping seat is fixedly connected with a rubber pad two, and the end of the horizontal rod away from the clamping plate is fixedly connected with a pull rod.

[0013] Preferably, one end of the spring is fixedly connected with one end of the clamping plate, and the other end of the spring is fixedly connected with the inner wall of the clamping seat.

[0014] Preferably, the positioning block is magnetically attracted to the magnetic sheet, the bottom of the magnetic sheet is provided with a chamfer, and the top of the positioning groove is provided with a chamfer, when the positioning block moves to the side of the magnetic sheet, the magnetic sheet attracts the positioning block into the positioning groove, and the positioning of the clamping mold is realized.

[0015] Preferably, the bottom end face of the fixing seat is fixedly connected with a sliding block, the sliding block is in sliding connection with a horizontal groove two, and the horizontal groove two is formed in the top end face of the operating table.

[0016] Compared with the prior art, the burning wire tester for building material flame resistance test has the following beneficial effects:

[0017] 1. The burning wire tester for building material flame resistance test is provided with a clamping assembly, a connecting plate, a rubber pad one and a rubber pad two, so that the heat source is physically separated from the clamping assembly, heat conduction is prevented, the clamping fixture positioning effect is not invalidated due to thermal expansion and cold contraction, overheating deformation or aging of the clamping structure is avoided, compared with the traditional threaded clamping, the clamping speed is faster, and the threaded clamping is not needed, the device can automatically adapt to different thickness material plates through the clamping mold, the compatibility is stronger, and the clamping of material plates of different sizes is realized through replacement of different clamping molds.

[0018] 2. The burning wire tester for building material flame resistance test is provided with a sliding block, so that the fixing seat only translates along the set horizontal direction, shaking or skewing is avoided, the parallelism and pressure uniformity of the burning wire contact surface are improved, and the positioning accuracy and positioning repeatability are improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a schematic diagram of the main body structure of the utility model;

[0020] Figure 2 It is the structure schematic view of the clamping assembly of the utility model;

[0021] Figure 3 It is the exploded view of the fixed seat of the utility model;

[0022] Figure 4 It is the sectional structure schematic view of the clamping seat of the utility model;

[0023] Figure 5 It is the utility model Figure 4 The structure schematic view of the A area in the middle;

[0024] Figure 6 It is the sectional structure schematic view of the clamping mold of the utility model;

[0025] Figure 7 It is the utility model Figure 6 The structure schematic view of the B area in the middle.

[0026] In the drawing: 1, operation platform;2, glowing wire;3, clamping assembly;301, servo motor;302, screw;303, threaded block;304, fixed seat;305, notch;306, clamping seat;307, cross bar;308, positioning groove;309, magnetic sheet;310, clamping plate;311, movable rod;312, spring;313, guide arc plate one;314, guide arc plate two;315, clamping mold;316, positioning block;317, connecting plate;318, elastic arc sheet;4, transverse groove one;5, pull rod;6, rubber pad one;7, rubber pad two;8, sliding block;9, transverse groove two. Specific implementation

[0027] As Figures 1-7 Indicated, the utility model provides a kind of technical scheme: a kind of building material flame retardant test is with glowing wire tester, including operation platform 1, the top end surface of operation platform 1 is fixedly connected with glowing wire 2, the top end surface of operation platform 1 is provided with clamping assembly 3, clamping assembly 3 includes servo motor 301, screw 302, threaded block 303, fixed seat 304, notch 305, clamping seat 306, cross bar 307, positioning groove 308, magnetic sheet 309, clamping plate 310, movable rod 311, spring 312, guide arc plate one 313, guide arc plate two 314, clamping mold 315, positioning block 316, connecting plate 317, elastic arc sheet 318.

[0028] In an embodiment of the utility model, servo motor 301 is fixedly connected at the bottom end surface of operation platform 1, the output of servo motor 301 is fixedly connected with screw rod 302, the lateral wall of screw rod 302 is threadedly connected with threaded block 303, the top end surface of operation platform 1 is provided with horizontal groove one 4, horizontal groove one 4 is slidably connected with threaded block 303, the top end surface of threaded block 303 is fixedly connected with fixed seat 304, the lateral wall of fixed seat 304 is provided with slot 305.

[0029] The lateral wall of clamping seat 306 is fixedly connected with cross bar 307, cross bar 307 is movably connected with slot 305, the inner wall of clamping seat 306 is provided with positioning groove 308, the inner wall of positioning groove 308 is fixedly connected with magnetic sheet 309, the lateral wall of clamping seat 306 is sleeved with movable rod 311, the end surface of movable rod 311 is fixedly connected with clamping plate 310, the lateral wall of movable rod 311 is sleeved with spring 312, one end of spring 312 is fixedly connected with one end of clamping plate 310, the other end of spring 312 is fixedly connected with the inner wall of clamping seat 306, the inner wall of clamping seat 306 is fixedly connected with rubber pad one 6, the top end surface of clamping seat 306 is fixedly connected with guide arc plate two 314, the top end of clamping plate 310 is fixedly connected with guide arc plate one 313, guide arc plate one 313 and guide arc plate two 314 guide the insertion of clamping mould 315, one side of clamping plate 310 close to the inside of clamping seat 306 is fixedly connected with rubber pad two 7, one end of cross bar 307 away from clamping plate 310 is fixedly connected with pull rod 5, when needing to take down clamping mould 315, pull rod 5 is pushed, clamping plate 310 moves away from clamping plate 310, clamping mould 315 can be taken down.

[0030] The lateral wall of clamping mould 315 is sleeved with positioning block 316, the inner wall of clamping mould 315 is fixedly connected with connecting plate 317, the inner wall of connecting plate 317 is inserted with elastic arc piece 318, positioning block 316 is magnetically attracted with magnetic sheet 309, the bottom of magnetic sheet 309 is provided with chamfer, clamping mould 315 is inserted into clamping seat 306, the top of positioning groove 308 is provided with chamfer, clamping mould 315 is pulled out from clamping seat 306, when positioning block 316 moves to the side of magnetic sheet 309, magnetic sheet 309 absorbs positioning block 316 into positioning groove 308, the positioning of clamping mould 315 is realized.

[0031] The to-be-tested material plate is inserted into the clamping mold 315, the elastic arc piece 318 tightly clamps the material plate through elastic deformation, then the clamping mold 315 is inserted into the clamping seat 306, the magnetic piece 309 attracts the positioning block 316 into the positioning groove 308, the positioning of the clamping mold 315 is realized, the spring 312 pulls the clamping plate 310, the clamping plate 310 is clamped by the inner wall of the clamping seat 306, the heat source is physically separated from the clamping assembly 3 through the setting of the connecting plate 317, the rubber pad one 6 and the rubber pad two 7, heat conduction is prevented, the clamping positioning effect is ensured not to be invalid due to thermal expansion and cold shrinkage, meanwhile, overheating deformation or aging of the clamping structure is avoided, compared with the traditional threaded clamping, the clamping speed is faster, and tightening is not needed, through the setting of the clamping mold 315, the device can automatically adapt to material plates of different thicknesses, and the compatibility is stronger, through replacement of different clamping molds 315, clamping of material plates of different sizes is realized.

[0032] Then the servo motor 301 drives the screw rod 302 to rotate, and then the threaded block 303 and the fixed seat 304 move transversely, the glowing wire 2 abuts against the material plate, and a certain pressure is applied to the material plate, and the test of the flame retardancy of the building material is realized.

[0033] In addition, the bottom end surface of the fixed seat 304 is fixedly connected with a sliding block 8, the sliding block 8 is slidably connected with a horizontal groove two 9, and the horizontal groove two 9 is arranged on the top end surface of the operation table 1.

[0034] In the utility model, when in use, the to-be-tested material plate is inserted into the clamping mold 315, the elastic arc piece 318 tightly clamps the material plate through elastic deformation, then the clamping mold 315 is inserted into the clamping seat 306, the magnetic piece 309 attracts the positioning block 316 into the positioning groove 308, the positioning of the clamping mold 315 is realized, the spring 312 pulls the clamping plate 310, the clamping plate 310 is clamped by the inner wall of the clamping seat 306, the clamping speed is faster, and tightening is not needed, the servo motor 301 drives the screw rod 302 to rotate, and then the threaded block 303 and the fixed seat 304 move transversely, the glowing wire 2 abuts against the material plate, and a certain pressure is applied to the material plate, and the test of the flame retardancy of the building material is realized.

[0035] The above is a detailed description of the utility model, but some modifications or improvements can be made on the basis of the utility model, which is obvious to those skilled in the art. Therefore, the modifications or improvements without departing from the spirit of the utility model are within the protection scope of the utility model.

Claims

1. A glowing wire tester for building material flame retardant test, comprising an operating table (1), the top end face of the operating table (1) is fixedly connected with a glowing wire (2), characterized in that: The top end face of the operating table (1) is provided with a clamping assembly (3), the clamping assembly (3) comprises: The output end of the servo motor (301) is fixedly connected with a screw rod (302), the side wall of the screw rod (302) is threadedly connected with a threaded block (303), the top end face of the threaded block (303) is fixedly connected with a fixed seat (304), and the side wall of the fixed seat (304) is provided with a notch (305); The inner wall of the clamping seat (306) is provided with a positioning groove (308), the inner wall of the positioning groove (308) is fixedly connected with a magnetic sheet (309), the side wall of the clamping seat (306) is sleeved with a movable rod (311), the end face of the movable rod (311) is fixedly connected with a clamping plate (310), and the side wall of the movable rod (311) is sleeved with a spring (312); The side wall of the clamping die (315) is sleeved with a positioning block (316), the inner wall of the clamping die (315) is fixedly connected with a connecting plate (317), and the inner wall of the connecting plate (317) is inserted with an elastic arc piece (318).

2. A glow wire apparatus for testing the flame retardancy of a building material according to claim 1, wherein: The servo motor (301) is fixedly connected to the bottom end face of the operating table (1), the top end face of the operating table (1) is provided with a horizontal groove one (4), and the horizontal groove one (4) is slidably connected with the threaded block (303).

3. The glow wire apparatus for testing the flame retardancy of building materials according to claim 1, characterized in that: The side wall of the clamping seat (306) is fixedly connected with a horizontal rod (307), the horizontal rod (307) is movably connected with the notch (305), the inner wall of the clamping seat (306) is fixedly connected with a rubber pad one (6), and the top end face of the clamping seat (306) is fixedly connected with a guide arc plate two (314).

4. The glow wire apparatus of claim 3, wherein: The top end of the clamping plate (310) is fixedly connected with a guide arc plate one (313), one side of the clamping plate (310) close to the inside of the clamping seat (306) is fixedly connected with a rubber pad two (7), and one end of the horizontal rod (307) away from the clamping plate (310) is fixedly connected with a pull rod (5).

5. The glow wire apparatus of claim 1, wherein: One end of the spring (312) is fixedly connected with one end of the clamping plate (310), and the other end of the spring (312) is fixedly connected with the inner wall of the clamping seat (306).

6. A glow wire apparatus for testing the flame retardancy of a building material according to claim 1, wherein: The positioning block (316) and the magnetic sheet (309) are magnetically attracted, the bottom of the magnetic sheet (309) is provided with a chamfer, and the top of the positioning groove (308) is provided with a chamfer.

7. The glow wire apparatus of claim 1, wherein: The bottom end face of the fixed seat (304) is fixedly connected with a sliding block (8), the sliding block (8) is slidably connected with a horizontal groove two (9), and the horizontal groove two (9) is arranged on the top end face of the operating table (1).

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