Fireproof glass strength testing device

Abstract

The invention relates to the technical field of fireproof glass testing devices, in particular to a fireproof glass strength testing device which comprises a furnace body, a furnace cover and a plurality of flame spray guns, a fixed frame is arranged in the furnace body, and a first protective shell and a second protective shell are mounted at the top of the fixed frame through an adjusting mechanism; a glass mounting seat is arranged in the fixed frame body, and a residue collecting box is arranged at the bottom of the fixed frame body. According to the scheme, through the residue collecting box arranged at the bottom of the fixed frame body, falling glass fragments and melts can be directly received in the testing process. And after the test is finished, the collecting box can be automatically moved out of the furnace and overturned and dumped by utilizing the pushing mechanism and the gear-rack linkage mechanism, so that the safe, convenient and automatic cleaning of residues is realized, the labor intensity and the risk of workers are greatly reduced, and the inner wall of the furnace body is effectively protected.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fireproof glass testing device, and particularly relates to a fireproof glass strength testing device. BACKGROUND

[0002] As an important building fireproof separation material, the fire resistance (including integrity and thermal insulation) of fireproof glass needs to be verified through strict tests. The common test method is to place the fireproof glass sample in a furnace under standard temperature conditions, and to burn one side to evaluate its performance at high temperature.

[0003] The existing fireproof glass test furnace usually directly heats the sample in the furnace. After the test is completed, the glass may be broken or melted due to high temperature, and the resulting slag and molten material will directly fall and adhere to the bottom of the furnace or the sample support. Cleaning these high-temperature residues not only has a large workload and a risk of scalding, but also hard residues can damage the inner wall of the furnace and precision components, affecting the service life and test accuracy of the equipment.

[0004] Therefore, there is an urgent need for a fireproof glass strength testing device that can conveniently and safely collect test residues. SUMMARY

[0005] The purpose of the present application is to solve the problems existing in the prior art and provide a fireproof glass strength testing device.

[0006] To achieve the above purpose, the technical scheme adopted by the present application is as follows: a fireproof glass strength testing device, comprising a furnace body, a furnace cover and a plurality of flame lances, an opening is formed in the side of the furnace body, the furnace cover is installed on the side of the furnace body, the plurality of flame lances are all installed through the other side of the furnace body, a fixed frame is arranged in the interior of the furnace body, a first protective shell and a second protective shell are installed on the top of the fixed frame through an adjusting mechanism, the inner cavities of the fixed frame, the first protective shell and the second protective shell are in communication with each other, a glass mounting seat is arranged in the fixed frame, a residue collection box is arranged at the bottom of the fixed frame, support blocks are installed on the two symmetrical sides of the fixed frame, the bottom ends of the two support blocks extend below the residue collection box, a pushing mechanism is connected between the bottom ends of the two support blocks, rectangular openings are formed in the sides of the two support blocks, rotating shafts are installed on the two symmetrical sides of the residue collection box, one end of each rotating shaft penetrates into the rectangular opening, fixed blocks are installed on the surfaces of the rotating shafts through bearings, the sides of the fixed blocks are in contact with the inner sides of the rectangular openings, the bottoms of the fixed blocks are elastically connected with the inner bottoms of the rectangular openings, guide pipes are installed at the bottom ends of the fixed blocks, guide rods are slidably installed in the guide pipes, one end of each guide rod is installed on the inner wall of the furnace body, and the other end of each guide rod extends to the outside through the opening.

[0007] Preferably, one end of the rotating shaft is provided with a gear, and the other side of the guide rod is provided with a rack. The adjusting mechanism comprises two mounting blocks, the two mounting blocks are mounted on the two symmetrical sides of the fixed frame, the two ends of the mounting blocks are bent, the two ends of the two mounting blocks are both provided with ball screws through bearings, the two ends of the adjacent two ball screws are fixedly connected, the rotation directions of the screws in the adjacent two ball screws are opposite, a driving motor and a transmission rod are arranged between the two mounting blocks, first bevel gears are arranged between the two ends of the transmission rod and one end of the two ball screws, the adjacent two first bevel gears are engaged, second bevel gears are arranged on the movable end of the driving motor and the surface of the transmission rod, the two second bevel gears are engaged, and the nuts of the four ball screws are connected with the first protective shell and the second protective shell respectively.

[0008] Preferably, a plurality of mounting openings corresponding to the positions of the flame spraying guns are formed in the side surface of the first protective shell.

[0009] Preferably, a plurality of smoke outlets are formed in the top of the first protective shell, a smoke outlet is formed in the top of the furnace body, and the positions of the smoke outlet and the smoke outlets correspond.

[0010] Preferably, a plurality of grating plates are arranged through the side surface of the second protective shell.

[0011] Preferably, the glass mounting seat comprises two fixed plates, the two ends of the two fixed plates are respectively mounted on the two symmetrical sides inside the fixed frame, a plurality of inclined blocks are arranged between the side surfaces of the two fixed plates, and recessed parts are arranged between the two ends of the two fixed plates.

[0012] Preferably, two elastic pressing mechanisms are arranged above the two fixed plates, the elastic pressing mechanism comprises a pressing plate, a plurality of fixed rods are arranged on the side surface of the pressing plate, a fixed tube is arranged on one end of the fixed rod, one end of the fixed tube is mounted on the inner side surface of the first protective shell or the second protective shell, a long slot is formed in the side surface of the fixed tube, a movable block is arranged on one end of the fixed rod in the fixed tube, one end of the movable block extends into the long slot, and a second compression spring is arranged between the surfaces of the fixed rod and the fixed tube.

[0013] Preferably, the pushing mechanism comprises a second electric cylinder and two slide rails, one end of the two slide rails is mounted on the inner bottom surface of the furnace body, the other end of the two slide rails extends to one side of the furnace body through the opening, a sliding block is arranged in each of the two slide rails, a second connecting block is arranged between the side surfaces of the two sliding blocks, the second connecting block is connected with the second electric cylinder, and the bottoms of the two supporting blocks are respectively mounted on the tops of the two sliding blocks.

[0014] Preferably, a first connecting block is installed on the top of the furnace cover, and a first electric cylinder is installed at both ends of the first connecting block. The outer shells of the two first electric cylinders are respectively installed on two symmetrical outer sides of the furnace body.

[0015] Preferably, a telescopic rod is connected between the bottom of the fixed block and the inner bottom surface of the rectangular opening, and a first compression spring is movably sleeved on the surface of the telescopic rod. The two ends of the first compression spring are respectively connected to the bottom of the fixed block and the inner bottom surface of the rectangular opening.

[0016] Compared with the prior art, the present invention has the following beneficial effects: In this design, a residue collection box located at the bottom of the fixed frame can directly collect falling glass shards and molten material during testing. After the test, a pushing mechanism and a gear-rack linkage mechanism can automatically move the collection box out of the furnace and tip it over, achieving safe, convenient, and automated residue cleaning. This greatly reduces manual labor intensity and risk, and effectively protects the inner wall of the furnace.

[0017] In this solution, by setting up a first protective shell and a second protective shell, together with the fixed frame, a movable test liner is formed. The high-temperature flame and splash directly act on the protective shell rather than the inner wall of the furnace, which significantly extends the service life of the main furnace body and reduces maintenance costs.

[0018] In this design, the glass mounting base uses a combination of a lower inclined block and a concave part for support, while the upper part is flexibly pressed by an elastic pressing mechanism. This method can accommodate samples of different specifications and provide uniform clamping force, preventing the glass from cracking due to local stress in the early stages of heating and ensuring the accuracy of the test results. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the internal structure of the present invention; Figure 3 This is a schematic diagram showing the connection between the adjustment mechanism and the fixed frame of the present invention; Figure 4 This is a schematic diagram of the connection structure between the first protective shell and the second protective shell of the present invention; Figure 5 This is a schematic diagram showing the connection between the fixed frame and the concave part of the present invention; Figure 6 This is a schematic diagram of the connection between the fixing plate and the inclined block of the present invention; Figure 7 This is a schematic diagram showing the connection between the pressure plate, fixing rod, and fixing tube of the present invention; Figure 8This is a schematic diagram showing the connection between the residue collection box and the guide rod of the present invention; Figure 9 This is a schematic diagram showing the connection between the fixing block and the guide rod of the present invention; Figure 10 This is a schematic diagram of the structure of the first and second protective shells being removed from the furnace body according to the present invention.

[0020] In the diagram: 1. Furnace body; 2. First electric cylinder; 3. Smoke outlet; 4. First connecting block; 5. Furnace cover; 6. Rotating shaft; 7. Guide rod; 8. Rack; 9. Second electric cylinder; 10. Slide rail; 11. Smoke outlet; 12. Flame torch; 13. First protective shell; 14. Mounting block; 15. Guide tube; 16. Support block; 17. Second connecting block; 18. Second protective shell; 19. Grating plate; 20. Drive motor; 21. Fixed... 21. Fixed frame; 22. Ball screw; 23. First bevel gear; 24. Transmission rod; 25. Second bevel gear; 26. Pressure plate; 27. Fixed tube; 28. Concave part; 29. ​​Gear; 30. First compression spring; 31. Slider; 32. Fixed block; 33. Residue collection box; 34. Telescopic rod; 35. Fixed plate; 36. Inclined block; 37. Movable block; 38. Second compression spring; 39. Long slot; 40. Fixed rod. Detailed Implementation

[0021] The following description is intended to disclose the invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious modifications will occur to those skilled in the art.

[0022] like Figures 1-10 The fireproof glass strength testing device shown includes a furnace body 1, a furnace cover 5, and multiple flame torches 12. An opening is provided on the side of the furnace body 1, the furnace cover 5 is installed on the side of the furnace body 1, and multiple flame torches 12 are installed through the other side of the furnace body 1. The flame torches 12 are connected to an external gas and air supply system to provide flames that conform to the standard temperature rise curve to the furnace.

[0023] The furnace body 1 has a fixed frame 21 inside. The top of the fixed frame 21 is equipped with a first protective shell 13 and a second protective shell 18 through an adjustment mechanism. The adjustment mechanism includes two mounting blocks 14, which are installed on two symmetrical sides of the fixed frame 21. The two ends of the mounting blocks 14 are bent. Both ends of the two mounting blocks 14 are equipped with ball screws 22 through bearings. One end of two adjacent ball screws 22 is fixedly connected. The spiral directions of the screws in the adjacent ball screws 22 are opposite. A drive motor 20 and a transmission rod 24 are provided between the two mounting blocks 14. First bevel gears 23 are installed between the two ends of the transmission rod 24 and one end of the two ball screws 22. Adjacent first bevel gears 23 mesh. Second bevel gears 25 are installed on the movable end of the drive motor 20 and the surface of the transmission rod 24. Two second bevel gears 25 mesh. The nuts of the four ball screws 22 are respectively connected to the first protective shell 13 and the second protective shell 18. When the drive motor 20 is started, the transmission rod 24 is driven to rotate through the bevel gear pair, which in turn drives the four ball screws 22 to rotate synchronously, so that the first protective shell 13 and the second protective shell 18 are separated or in contact with each other, so that the glass sample can be installed in the inner cavity of the first protective shell 13 and the second protective shell 18 during testing.

[0024] The inner cavities of the fixed frame 21, the first protective shell 13, and the second protective shell 18 are interconnected, together forming a test chamber that surrounds the sample glass.

[0025] The fixed frame 21 is equipped with a glass mounting base, which includes two fixing plates 35. The two ends of the two fixing plates 35 are respectively installed on two symmetrical sides inside the fixed frame 21. Multiple inclined blocks 36 are installed between the sides of the two fixing plates 35, and concave parts 28 are installed between the two ends of the two fixing plates 35. The inclined blocks 36 are used to support the bottom of the glass sample, and the two fixing plates 35 and the two concave parts 28 are used to limit the front-back, left-right and right-side positions of the glass sample, thus playing a preliminary role in defining the glass sample.

[0026] Two elastic pressing mechanisms are provided above each of the two fixing plates 35. Each elastic pressing mechanism includes a pressure plate 26, and multiple fixing rods 40 are mounted on the side of the pressure plate 26. A fixing tube 27 is fitted onto one end of each fixing rod 40. One end of the fixing tube 27 is installed on the inner side of the first protective shell 13 or the second protective shell 18. An elongated opening 39 is provided on the side of the fixing tube 27. A movable block 37 is installed at one end of the fixing rod 40 located within the fixing tube 27. One end of the movable block 37 extends into the elongated opening 39. A second compression spring 38 connects the surfaces of the fixing rod 40 and the fixing tube 27. The movable block 37 extends into the elongated opening 39 and can slide within it to prevent the fixing rod 40 from rotating. When the two protective shells approach and contact each other, the two protective shells, under the action of the second compression spring 38, press the pressure plate 26 against the two symmetrical sides of the glass sample to achieve flexible clamping and prevent the glass from cracking due to stress concentration in the early stages of testing.

[0027] The bottom of the fixed frame 21 is provided with a residue collection box 33. Support blocks 16 are installed on both symmetrical sides of the fixed frame 21. The support blocks 16 separate the space between the fixed frame 21 and the slide rail 10, providing the space required for the residue collection box 33 to be flipped.

[0028] The bottom ends of both support blocks 16 extend to the bottom of the residue collection box 33, which is used to collect all the debris and molten material that falls during the test.

[0029] A pushing mechanism is connected between the bottom ends of the two support blocks 16. The pushing mechanism includes a second electric cylinder 9 and two slide rails 10. One end of the two slide rails 10 is installed on the inner bottom surface of the furnace body 1, and the other end of the two slide rails 10 passes through the opening and extends to one side of the furnace body 1. A slider 31 is connected to each of the two slide rails 10. A second connecting block 17 is connected between the sides of the two sliders 31. The second electric cylinder 9 is connected to the side of the second connecting block 17. The bottoms of the two support blocks 16 are respectively installed on the tops of the two sliders 31. By extending and retracting the second electric cylinder, the entire internal assembly (fixed frame 21, support blocks 16, residue collection box 33, etc.) can be driven to move in and out of the furnace body 1 along the slide rails 10.

[0030] Both support blocks 16 have rectangular openings on their sides. Rotating shafts 6 are mounted on the two symmetrical sides of the residue collection box 33. One end of each rotating shaft 6 is inserted into a rectangular opening. A fixing block 32 is mounted on the surface of the rotating shaft 6 via a bearing. The side of the fixing block 32 contacts the inner surface of the rectangular opening, and the bottom of the fixing block 32 is elastically connected to the inner bottom surface of the rectangular opening. A telescopic rod 34 connects the bottom of the fixing block 32 and the inner bottom surface of the rectangular opening. A first compression spring 30 is movably sleeved on the surface of the telescopic rod 34. Both ends of the first compression spring 30 are connected to the bottom of the fixing block 32 and the inner bottom surface of the rectangular opening, respectively. This provides cushioning elasticity when the residue collection box 33 moves vertically, preventing rigid collisions.

[0031] A guide tube 15 is installed at the bottom of the fixed block 32. A guide rod 7 is slidably installed in the guide tube 15. One end of the guide rod 7 is installed on the inner wall of the furnace body 1. The other end of the guide rod 7 passes through the opening and extends to the outside. A gear 29 is installed at one end of the rotating shaft 6. A rack 8 is provided on one side of the other end of the guide rod 7. After the gear 29 moves to the outside of the furnace body 1, it meshes with the rack 8. When gear 29 moves to the outside of furnace body 1 and meshes with rack 8, the push mechanism pulls out the entire internal components (fixed frame 21, support block 16, residue collection box 33, etc.). During this process, the guide tube 15 moves along the guide rod 7. Since the two ends of the guide rod 7 are not at the same height, and the two ends of the guide rod 7 are straight while the middle section of the guide rod 7 is curved, the guide tube 15 moves smoothly downward after reaching the middle section, causing the residue collection box 33 to move downward synchronously. After moving to the position where the guide rod 7 is located at one end outside the furnace body 1, the residue collection box 33 reaches the position where it can be flipped without being obstructed by the fixed frame 21. If the push mechanism continues to advance, gear 29 will roll on rack 8, thereby causing the rotating shaft 6 and the residue collection box 33 fixed thereto to flip, realizing the dumping of residue. At the same time, a receiving container is set below the dumped residue collection box 33 for collecting residue.

[0032] The first protective shell 13 has multiple mounting ports on its side corresponding to the positions of the flame gun 12, so that the flame gun 12 can be inserted into the first protective shell 13, and the glass sample is installed in the test chamber to facilitate the flame sprayed by the flame gun 12 to conduct high-temperature tests on the fireproof glass.

[0033] The top of the first protective shell 13 has multiple smoke outlets 11, and the top of the furnace body 1 has a smoke exhaust port 3. The positions of the smoke exhaust port 3 and the smoke outlets 11 correspond to each other. This is used to discharge the flue gas generated during testing. Pipes can also be connected to the smoke exhaust port 3 to connect to flue gas treatment equipment to protect the air environment.

[0034] A grid plate 19 is installed through the side of the second protective shell 18. At the same time, an air inlet is opened at the bottom of the furnace body to facilitate the entry of external gas into the furnace body 1 and then into the test chamber through the grid plate 19, which helps to improve the stability of flame combustion.

[0035] A first connecting block 4 is installed on the top of the furnace cover 5. A first electric cylinder 2 is installed at both ends of the first connecting block 4. The outer shells of the two first electric cylinders 2 are respectively installed on two symmetrical outer sides of the furnace body 1. The furnace cover 5 is automatically opened and closed by extending and retracting the first electric cylinders 2.

[0036] In this scheme, the first electric cylinder 2, the second electric cylinder 9, and the drive motor 20 are all connected to the PLC via wires, and the PLC is connected to an external power source via a guide.

[0037] Working principle: When loading the glass sample, firstly, the movable ends of the two first electric cylinders 2 are extended to smoothly open the furnace cover 5. Then, the second electric cylinder 9 is started, and its movable end extends, pulling the entire internal assembly completely out of the furnace body 1 through the second connecting block 17, slider 31, and slide rail 10, reaching the loading position outside the furnace. Then, the drive motor 20 is controlled to work, driving the four ball screws 22 to rotate synchronously through the transmission of the second bevel gear 25, transmission rod 24, and first bevel gear 23, separating the first protective shell 13 and the second protective shell 18, fully exposing the glass mounting base below. The drive motor 20 is then stopped. The operator carefully places the fireproof glass sample to be tested on the glass mounting base. The bottom of the sample is precisely supported and positioned by the inclined block 36 and concave part 28. The drive motor 20 is then started in reverse, driving the two protective shells to descend synchronously and smoothly. When the two pressure plates 26 on the inner side of the protective shell contact the two symmetrical surfaces of the sample, continued movement will compress the second compression spring 38. Under the action of spring force, the pressure plate 26 applies uniform and flexible pressure to the sample, firmly clamping it between the mounting base and the pressure plate without crushing the glass, thus completing the loading operation of the glass sample. The second electric cylinder 9 is activated, and its movable end retracts, pushing the internal components into the furnace body 1. Simultaneously, the first protective shell 13 is fitted onto the flame torch 12 through the mounting port. The movable end of the first electric cylinder 2 is activated, closing the furnace cover 5 and sealing the furnace body 1. The flame torch 12 is then activated, and the temperature is raised according to the predetermined test standard (such as GB / T 12513) to burn one side of the sample S. The flame acts directly on the sample through the opening of the first protective shell 13. During the test, the sample may crack, soften, or melt due to heat. All the resulting residue falls directly into the residue collection box 33, and the generated flue gas is discharged from the smoke outlet 11 of the first protective shell 13 and enters the external smoke exhaust system through the smoke exhaust port 3 at the top of the furnace body. After the test, once the furnace temperature drops to a safe range, the movable end of the first electric cylinder 2 extends, opening the furnace cover 5. The second electric cylinder 9 then slowly pushes the test unit out of the furnace. The internal components move horizontally along the guide rod 7. When the internal components reach the middle of the guide rod 7, they move downwards smoothly. As the second electric cylinder 9 continues to pull and move horizontally, after the gear 29 moves horizontally and meshes with the rack 8, the gear 29 can no longer move forward in a straight line and is forced to roll on the rack 8. The rolling of the gear 29 drives the rotating shaft 6 to rotate, which in turn drives the residue collection box 33, which is rigidly connected to the rotating shaft 6, to flip. When the flip angle of the collection box 33 reaches or exceeds 90 degrees, the test residue accumulated inside is completely dumped into the collection cart or waste bin placed below under the action of gravity. After dumping, the movable end of the second electric cylinder 9 extends, pushing the test unit back. During the return stroke, gear 29 rolls in the opposite direction along rack 8, driving collection box 33 to smoothly return to the horizontal position. When gear 29 disengages from rack 8 and is completely retracted into furnace body 1, the internal components continue to retract to the initial working position or remain outside the furnace for the next sample loading.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A fireproof glass strength testing device, comprising a furnace body (1), a furnace cover (5), and a plurality of flame torches (12), wherein the furnace body (1) has an opening on its side, the furnace cover (5) is installed on the side of the furnace body (1), and the plurality of flame torches (12) are all installed through the furnace body (1) on the other side, characterized in that, The furnace body (1) has a fixed frame (21) inside. The top of the fixed frame (21) is equipped with a first protective shell (13) and a second protective shell (18) through an adjustment mechanism. The inner cavities of the fixed frame (21), the first protective shell (13), and the second protective shell (18) are interconnected. The fixed frame (21) is equipped with a glass mounting base. The bottom of the fixed frame (21) is equipped with a residue collection box (33). Support blocks (16) are installed on two symmetrical sides of the fixed frame (21). The bottom ends of the two support blocks (16) extend to the bottom of the residue collection box (33). A pushing mechanism is connected between the bottom ends of the two support blocks (16). The support block (16) has rectangular openings on its sides. The two symmetrical sides of the residue collection box (33) are equipped with rotating shafts (6). One end of the rotating shaft (6) is inserted into the rectangular opening. A fixing block (32) is installed on the surface of the rotating shaft (6) through a bearing. The side of the fixing block (32) is in contact with the inner side of the rectangular opening. The bottom of the fixing block (32) is elastically connected to the inner bottom surface of the rectangular opening. A guide tube (15) is installed at the bottom end of the fixing block (32). A guide rod (7) is slidably installed in the guide tube (15). One end of the guide rod (7) is installed on the inner wall of the furnace body (1). The other end of the guide rod (7) passes through the opening and extends to the outside.

2. The fire-resistant glass strength testing device according to claim 1, characterized in that, A gear (29) is installed at one end of the rotating shaft (6), and a rack (8) is provided on one side of the other end of the guide rod (7). The gear (29) moves to the outside of the furnace body (1) and meshes with the rack (8). The adjustment mechanism includes two mounting blocks (14), which are mounted on two symmetrical sides of the fixed frame (21). The two ends of the mounting blocks (14) are bent. Both ends of the two mounting blocks (14) are equipped with ball screws (22) through bearings. One end of two adjacent ball screws (22) is fixedly connected. The spiral direction of the screws in the two adjacent ball screws (22) is opposite. A drive motor (20) and a transmission rod (24) are provided between the two mounting blocks (14). A first bevel gear (23) is installed between the two ends of the transmission rod (24) and one end of the two ball screws (22). Two adjacent first bevel gears (23) mesh. A second bevel gear (25) is installed on the moving end of the drive motor (20) and the surface of the transmission rod (24). Two second bevel gears (25) mesh. The nuts of the four ball screws (22) are respectively connected to the first protective shell (13) and the second protective shell (18).

3. The fire-resistant glass strength testing device according to claim 1, characterized in that, The first protective shell (13) has multiple mounting ports on its side corresponding to the positions of the flame gun (12).

4. The fire-resistant glass strength testing device according to claim 1, characterized in that, The top of the first protective shell (13) is provided with multiple smoke outlets (11), and the top of the furnace body (1) is provided with a smoke exhaust port (3). The positions of the smoke exhaust port (3) and the smoke outlet (11) are corresponding.

5. The fire-resistant glass strength testing device according to claim 1, characterized in that, A grid plate (19) is installed through the side of the second protective shell (18).

6. The fire-resistant glass strength testing device according to claim 1, characterized in that, The glass mounting base includes two fixing plates (35), with the two ends of the two fixing plates (35) respectively installed on two symmetrical sides inside the fixing frame (21), and multiple inclined blocks (36) installed between the sides of the two fixing plates (35), and concave parts (28) installed between the two ends of the two fixing plates (35).

7. The fire-resistant glass strength testing device according to claim 6, characterized in that, Two elastic pressing mechanisms are provided above the two fixing plates (35). The elastic pressing mechanism includes a pressure plate (26). Multiple fixing rods (40) are installed on the side of the pressure plate (26). A fixing tube (27) is sleeved on one end of the fixing rod (40). One end of the fixing tube (27) is installed on the inner side of the first protective shell (13) or the second protective shell (18). A long slot (39) is opened on the side of the fixing tube (27). A movable block (37) is installed at one end of the fixing rod (40) located in the fixing tube (27). One end of the movable block (37) extends into the long slot (39). A second compression spring (38) is connected between the surfaces of the fixing rod (40) and the fixing tube (27).

8. The fire-resistant glass strength testing device according to claim 1, characterized in that, The pushing mechanism includes a second electric cylinder (9) and two slide rails (10). One end of the two slide rails (10) is installed on the inner bottom surface of the furnace body (1), and the other end of the two slide rails (10) passes through the opening and extends to one side of the furnace body (1). A slider (31) is connected in each of the two slide rails (10). A second connecting block (17) is connected between the sides of the two sliders (31). The second electric cylinder (9) is connected to the side of the second connecting block (17). The bottoms of the two support blocks (16) are respectively installed on the tops of the two sliders (31).

9. The fire-resistant glass strength testing device according to claim 1, characterized in that, The top of the furnace cover (5) is equipped with a first connecting block (4), and both ends of the first connecting block (4) are equipped with a first electric cylinder (2). The outer shells of the two first electric cylinders (2) are respectively installed on the two symmetrical outer sides of the furnace body (1).

10. The fire-resistant glass strength testing device according to claim 1, characterized in that, A telescopic rod (34) is connected between the bottom of the fixed block (32) and the inner bottom surface of the rectangular opening. A first compression spring (30) is movably sleeved on the surface of the telescopic rod (34). The two ends of the first compression spring (30) are respectively connected to the bottom of the fixed block (32) and the inner bottom surface of the rectangular opening.

Images