Testing device for misfire of anti-explosion building ground material

Abstract

The utility model relates to a device for testing the misfire of an explosion-proof building ground material, in particular to the technical field of misfire testing equipment. The device comprises a light shield, an observation opening, a screw rod, a placement groove, a cross rod, an extrusion rod, an extrusion block, a weight placement tray, a weight, a driving motor and a grinding wheel, and the weight of a test material before grinding and the weight of the test material after grinding can be known by arranging a weight sensor; and the weight of the ground test material is obtained through the difference value between the weight of the test material before grinding and the weight of the ground test material, so that the test accuracy is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of non-inflammability testing equipment, in particular to a non-inflammability testing device for explosion-proof building ground materials. Background Art

[0002] For the non-inflammable (explosion-proof) building floor materials and their products, the non-inflammable property test is carried out according to the specification requirements. The samples are placed on a grinding wheel with a rotation speed of (600-1000) r / min and a diameter of 150 mm and pre-applied with (10-20) N for testing. Each sample is ground off by no less than 20 g and observed for the occurrence of instantaneous sparks. If no instantaneous sparks are found, it can be determined that the non-inflammable property test has passed.

[0003] The test equipment currently on the market is complex to operate and inconvenient to observe. When conducting non-pyrophoricity tests, it is impossible to accurately determine the specific number of grams of the sample that has been worn away, which affects the accuracy of the test. Utility Model Content

[0004] (1) Technical solution

[0005] In order to solve the above technical problems, the utility model provides a test device for the non-flammability of explosion-proof building floor materials, including a light shield, an observation port, a screw, a placement slot, a cross bar, an extrusion rod, an extrusion block, a weight placement tray, a weight, a drive motor, and a grinding wheel. The light shield is provided with the observation port, the screw is rotatably installed between the top and bottom inner walls of the light shield, one end of the screw passes through the top of the light shield and is connected to a handle, a moving block is threadedly connected to the screw, the placement slot for placing the test material is provided just below the observation port, and the outer wall of one side of the placement slot It is connected to one end of the moving block through a connecting rod, the cross bar is fixed between the two sides of the inner wall of the placement groove, the weight placement tray for placing the weight is provided directly above the cross bar, the extrusion rod is fixed vertically downward in the middle of the bottom of the weight placement tray, the lower end of the extrusion rod passes through the cross bar and is welded with the extrusion block, the drive motor is provided in the light shield, the grinding wheel is fixed to the output shaft of the drive motor, a grinding opening is opened at a position at the bottom of the placement groove corresponding to the grinding wheel, and gravity sensors are provided on the bottom of the placement groove on both sides of the grinding opening.

[0006] Preferably, the other end of the moving block is slidably connected to the side wall of the light shield.

[0007] Preferably, guide rods are vertically installed downward at the bottom of the weight placement tray corresponding to both sides of the extrusion rod, the lower ends of the guide rods pass through the cross bar, and springs are sleeved on the guide rods between the bottom of the weight placement tray and the top of the cross bar.

[0008] Preferably, the rotation speed of the grinding wheel is 600 r / min to 1000 r / min.

[0009] (2) Beneficial effects

[0010] The utility model provides a testing device for the non-flammability of explosion-proof building floor materials. The device is not only simple to operate and convenient to observe, but also has the following beneficial effects compared with the prior art: by arranging a weight sensor, the weight of the test material before grinding and the weight of the test material after grinding can be known, and the weight of the test material ground off can be obtained by the difference between the weight of the test material before grinding and the weight of the test material after grinding, thereby improving the accuracy of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a front structural schematic diagram of the utility model.

[0012] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0013] The accompanying drawings are marked as: 1-light shield, 2-observation port, 3-screw, 31-moving block, 32-handle, 4-placing slot, 41-connecting rod, 42-grinding port, 43-gravity sensor, 5-cross bar, 6-extrusion rod, 7-extrusion block, 8-weight placement tray, 9-guide rod, 10-spring, 11-weight, 12-drive motor, 13-grinding wheel, 14-test material. DETAILED DESCRIPTION

[0014] The utility model is further described in conjunction with the accompanying drawings and embodiments.

[0015] like Figure 1 , 2The utility model shows a non-flammable test device for explosion-proof building floor materials, comprising a light shield 1, an observation port 2, a screw 3, a placement slot 4, a cross bar 5, an extrusion rod 6, an extrusion block 7, a weight placement tray 8, a weight 11, a drive motor 12, and a grinding wheel 13. The light shield 1 is provided with the observation port 2, the screw 3 is rotatably installed between the top and bottom inner walls of the light shield 1, one end of the screw 3 passes through the top of the light shield 1 and is connected to a handle 32, a moving block 31 is threadedly connected to the screw 3, the placement slot 4 for placing the test material 14 is provided just below the observation port 2, and the outer wall of one side of the placement slot 4 is connected by a connecting rod 4 1 is connected to one end of the moving block 31, the cross bar 5 is fixed between the two sides of the inner wall of the placement groove 4, the weight placement tray 8 for placing the weight 11 is provided just above the cross bar 5, the extrusion rod 6 is fixed vertically downward at the middle of the bottom of the weight placement tray 8, the lower end of the extrusion rod 6 passes through the cross bar 5 and is welded with the extrusion block 7, the drive motor 12 is provided in the light shield 1, the grinding wheel 13 is fixed to the output shaft of the drive motor 12, a grinding port 42 is opened at a position corresponding to the grinding wheel 13 at the bottom of the placement groove 4, and gravity sensors 43 are provided on the bottom of the placement groove 4 on both sides of the grinding port 42.

[0016] The other end of the moving block 31 is slidably connected to the side wall of the light shield 1, and guide rods 9 are vertically installed downward at the bottom of the weight placement tray 8 corresponding to both sides of the extrusion rod 6. The lower end of the guide rod 9 passes through the cross bar 5, and a spring 10 is sleeved on the guide rod 9 between the bottom of the weight placement tray 8 and the top of the cross bar 5. The rotation speed of the grinding wheel 13 is 600r / min~1000r / min.

[0017] In actual work, the test material 14 is placed in the placement groove 4 through the observation port 2. The weight of the test material 14 before grinding can be known through the gravity sensor 43, and then the weight 11 of the corresponding gram (capable of applying a pressure of 10N to 20N) is placed on the weight placement tray 8 to drive the extrusion rod 6 and the extrusion block 7 to descend to apply pressure to the test material 14. After the pressure is applied, the handle 32 is turned to drive the screw rod 3 to rotate and then drive the moving block 31 to move, thereby driving the placement groove 4 to descend so that the grinding wheel 13 enters the grinding port 42 and contacts the bottom of the test material 14, and the drive motor 12 is started to drive the grinding wheel 1 3. Grind the test material 14 by rotating (the rotation speed of the grinding wheel 13 is 600r / min~1000r / min), and carefully observe whether there is spark at the friction place between the test material 14 and the grinding wheel 13. If no instantaneous spark is found, it can be determined that the non-flammability test is qualified; the test needs to be continued until the test material 14 is ground off by not less than 20g, and the weight of the test material 14 after grinding can be known at any time through the gravity sensor 43 during the period, and the weight of the test material 14 after grinding can be obtained by the difference between the weight of the test material 14 before grinding and the weight of the test material 14 after grinding. The contents not described in detail in this specification belong to the prior art known to the professional and technical personnel in this field.

[0018] The above-mentioned embodiments only express the preferred implementation of the utility model, and the description is relatively specific and detailed, but the utility model is not limited to these embodiments. It should be pointed out that for ordinary technicians in this field. Under the premise of not departing from the purpose of the utility model, any improvement made shall fall within the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A test device for the non-flammability of explosion-proof building floor materials, characterized in that: The invention comprises a light shield (1), an observation port (2), a screw (3), a placement groove (4), a cross bar (5), an extrusion rod (6), an extrusion block (7), a weight placement tray (8), a weight (11), a drive motor (12), and a grinding wheel (13). The light shield (1) is provided with the observation port (2). The screw (3) is rotatably installed between the top and bottom inner walls of the light shield (1). One end of the screw (3) passes through the top of the light shield (1) and is connected to a handle (32). A moving block (31) is threadedly connected to the screw (3). The placement groove (4) for placing the test material (14) is provided directly below the observation port (2). The outer wall of one side of the placement groove (4) is connected to the moving block (31) through a connecting rod (41). The ends of the weight placing tray (8) are connected, the cross bar (5) is fixed between the two sides of the inner wall of the placement groove (4), the weight placing tray (8) for placing the weight (11) is provided just above the cross bar (5), the extrusion rod (6) is fixed vertically downward in the middle of the bottom of the weight placing tray (8), the lower end of the extrusion rod (6) passes through the cross bar (5) and is welded with the extrusion block (7), the drive motor (12) is provided in the light shield (1), the grinding wheel (13) is fixedly connected to the output shaft of the drive motor (12), a grinding opening (42) is opened at a position corresponding to the grinding wheel (13) at the bottom of the placement groove (4), and gravity sensors (43) are provided at the bottom of the placement groove (4) on both sides of the grinding opening (42).

2. A test device for the non-flammability of explosion-proof building floor materials according to claim 1, characterized in that: The other end of the moving block (31) is slidably connected to the side wall of the light shield (1).

3. A test device for the non-flammability of explosion-proof building floor materials according to claim 1, characterized in that: Guide rods (9) are vertically installed downward at the bottom of the weight placement tray (8) corresponding to both sides of the extrusion rod (6), and the lower ends of the guide rods (9) penetrate the cross bar (5). A spring (10) is sleeved on the guide rods (9) between the bottom of the weight placement tray (8) and the top of the cross bar (5).

4. A test device for the non-flammability of explosion-proof building floor materials according to claim 1, characterized in that: The rotation speed of the grinding wheel (13) is 600 r / min to 1000 r / min.

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