CN212364030U - Test device for testing non-ignitability of building ground material and product thereof - Google Patents

Abstract

The application discloses a test device for testing building ground material and its goods incombustibility, includes: the device comprises a test board, a grinding wheel, a transmission system, a pulley, a clamping device, a fixed pulley block and a force sensor; the clamping device is fixed on the pulley and used for clamping a piece to be tested; the fixed pulley group comprises a fixed pulley, a tension rope matched with the fixed pulley and a counterweight, wherein the force sensor is arranged on the tension rope; the grinding wheel is positioned between the fixed pulley and the pulley, and the fixed pulley block is used for driving the pulley to move towards the grinding wheel, wherein the axial direction of the grinding wheel is the same as the axial direction of the fixed pulley, and the axial direction of the grinding wheel is vertical to the movement direction of the pulley driven by the fixed pulley block; the grinding wheel is connected with a transmission system. The gravity of the counterweight part is converted into the pressure applied to the to-be-tested part through the fixed pulley, and the pressure applied to the grinding wheel by the to-be-tested part can be monitored in real time through the force sensor on the tension rope, so that the pressure applied to the grinding wheel by the to-be-tested part meets the requirement, and the accuracy of a test result is guaranteed.

Description

Test device for testing non-ignitability of building ground material and product thereof

Technical Field

The application relates to the field of test testing devices, in particular to a testing device for testing non-ignitability of building ground materials and products thereof.

Background

The special fire-fighting and explosion-proof requirements are provided in areas such as military industry manufacturing, liquefied petroleum gas stations, gas production plants, oil depots, oil station docks and other flammable and explosive engineering, warehouses and the like, wherein the requirement on ground materials is that the ground materials must have non-ignitability. The non-ignitability means that when the material is mechanically rubbed, impacted or rubbed against a hard substance such as metal or stone, sparks (or sparks) are not generated, so that the inflammable substance is in danger of ignition or explosion. The causes of ground sparking include mechanical impact and friction resulting in electrostatic buildup.

Therefore, in order to avoid accidents such as explosion and fire, which seriously endanger safety, it is necessary to perform a non-ignition performance test on the building floor material and its products, and in the prior art, a test device for testing the non-ignition performance of the building floor material and its products, as shown in fig. 1, includes: a support body 100, a driving body 200, a grinding wheel 300, and a load applying body 400. The supporting body 100 includes a supporting frame 110 and a cantilever 120 with an adjustable height and disposed on the supporting frame. The driving body 200 includes a first portion 210, a second portion 220 and a third portion 230 in order in a horizontal direction, the second portion 220 is rotatably supported on the supporting body 100, the second portion is provided with a pointer 221, a horizontal deviation angle of the driving body can be clearly understood by looking at a position of the pointer at a deflection angle, the first portion 210 has a rotary power output shaft, and the grinding wheel 300 is connected to the rotary power output shaft; the load applying body 400 serves to apply a load to the first portion 210 of the driving body 200 and to transmit the applied load to the grinding wheel 300 and the test piece contact surface to be tested via the grinding wheel 300. According to the technical scheme, before the performance of a test piece to be tested is tested, the first part, the second part and the third part are adjusted to be in a horizontal state, then the driving body is started, and the load is applied to the first part through the load applying body, so that the rotary power output shaft drives the rotary friction testing wheel to rotate to perform friction testing on the non-ignition sample to be tested.

However, in appendix a of GB50209-2010 "construction quality acceptance criteria for construction ground engineering", the method for testing the non-ignitability of non-ignitable (explosion-proof) construction ground materials and products thereof is specifically required: in the test, the rotating speed of the grinding wheel is controlled to be 600r/min-1000r/min, any part of the test piece is in contact with the rotating grinding wheel and 10N-20N of pressure is applied to the part where the test piece and the grinding wheel rub, and then whether sparks occur is observed. This results in a failure to make a true and effective determination of the misfire of the same building flooring material.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that the non-ignitability of the same building ground material cannot be judged truly and effectively in the prior art, the application provides a test device for testing the non-ignitability of the building ground material and a product thereof.

The test device for testing the non-ignitability of the building ground material and the product thereof provided by the embodiment of the application comprises: the device comprises a test board, a grinding wheel, a transmission system, a pulley, a clamping device, a fixed pulley block and a force sensor; the grinding wheel and the pulley are both positioned on the test board; the clamping device is fixed on the pulley and used for clamping a piece to be tested; the fixed pulley block comprises a fixed pulley, a tension rope matched with the fixed pulley and a counterweight, wherein the fixed pulley is fixed at the edge of the test board, the first end of the tension rope is connected with the pulley, and the second end of the tension rope is connected with the counterweight; the force sensor is arranged on the tension rope; the grinding wheel is positioned between the fixed pulley and the pulley, and the fixed pulley block is used for driving the pulley to move towards the grinding wheel, wherein the axial direction of the grinding wheel is the same as the axial direction of the fixed pulley, and the axial direction of the grinding wheel is vertical to the movement direction of the pulley driven by the fixed pulley block; the grinding wheel is connected with the transmission system.

Furthermore, the test board further comprises a limiting track, and the pulley slides in the limiting track along the length direction of the limiting track.

Further, the clamping device comprises a first group of clamping columns, a second group of clamping columns and a locking piece; the first group of clamping upright columns are fixed on one side, close to the grinding wheel, of the pulley, wherein two clamping upright columns in the first group of clamping upright columns are respectively arranged on two sides of the working surface of the grinding wheel; the second group of clamping upright columns are positioned on one side far away from the grinding wheel and are arranged opposite to the first group of clamping upright columns; the retaining member with the centre gripping stand of second group is connected, the retaining member is used for being awaited measuring the test piece be fixed in first group centre gripping stand with between the retaining member.

Furthermore, the locking piece comprises a fixed cross rod, a threaded telescopic rod and a locking block; the fixed cross bar is fixed on the second group of clamping stand columns, wherein a threaded hole is formed in the center of the fixed cross bar; the threaded telescopic rod penetrates through the threaded hole and is in threaded connection with the fixed cross rod, and the length direction of the threaded telescopic rod is the same as the movement direction of the pulley; the locking block is fixedly connected to the first end of the threaded telescopic rod, and the first end of the threaded telescopic rod is located at one end between the first group of clamping stand columns and the second group of clamping stand columns.

Furthermore, the outer surface of the second group of clamping columns is provided with threads, the fixed cross rod is provided with a through hole matched with the second group of clamping columns, and the fixed cross rod is sleeved on the second group of clamping columns through the through hole and is fixed at the preset position of the second group of clamping columns through nuts.

Furthermore, the locking block faces one surface of the first group of clamping columns, and the surface of the first group of clamping columns facing the locking block is a rough surface.

Further, the device also comprises a spark detector, wherein the spark detector is used for detecting sparks generated by friction between the grinding wheel and a sample to be detected.

The test bench, the grinding wheel, the transmission system, the pulley, the clamping device, the fixed pulley block and the force sensor are all positioned in the light-shielding cover body;

the light-shading cover body is provided with an observation lens barrel, the first end of the observation lens barrel is positioned in the light-shading cover body, and the second end of the observation lens barrel is positioned outside the light-shading cover body.

Furthermore, the observation lens barrel comprises a first lens barrel and a second lens barrel which are connected end to end, and an included angle between the first lens barrel and the second lens barrel is larger than or equal to 90 degrees and smaller than 180 degrees;

the prism is arranged in the joint of the first lens barrel and the second lens barrel and used for reflecting light rays at the first end of the observation lens barrel to the second end of the observation lens barrel.

Further, the device also comprises a bolt; the edge of one side, far away from the grinding wheel, of the pulley is provided with a limiting jack matched with the bolt, and the edge, far away from one side of the grinding wheel, of the test board is provided with a limiting jack matched with the bolt.

The application provides a test device for testing building ground material and non-ignitability of goods thereof pulls the pulley to the emery wheel direction through the crown block, until the working face contact of the piece of waiting to test on the clamping device and emery wheel. The rotating speed of the grinding wheel is controlled through the transmission system, so that the rotating speed of the grinding wheel meets the requirements in appendix A of GB50209-2010 construction ground engineering construction quality acceptance Specification. In addition, the pressure applied to the grinding wheel by the piece to be tested can be controlled by adjusting the weight of the counterweight part and the force sensor arranged on the tension rope, namely the gravity of the counterweight part is converted into the applied pressure of the piece to be tested through the fixed pulley, and the pressure applied to the grinding wheel by the piece to be tested can be monitored in real time through the force sensor arranged on the tension rope, so that the pressure applied to the grinding wheel by the piece to be tested can meet the requirements in appendix A of GB50209-2010 construction ground engineering construction quality acceptance criterion, and the accuracy of a test result is ensured.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic diagram of a prior art test apparatus for testing the misfire of construction flooring and products thereof;

FIG. 2 is a schematic perspective view of a testing apparatus for testing the nonflammability of the building floor material and its products according to the embodiments of the present application;

FIG. 3 is a front view of a testing apparatus for testing the misfire of the construction flooring material and products thereof according to embodiments of the present application;

FIG. 4 is a side view of a test apparatus for testing the misfire of the construction flooring material and articles thereof according to embodiments of the present application.

Description of the reference numerals

100-support body, 110-support frame body, 120-cantilever, 200-drive body, 210-first part, 220-second part, 230-third part, 221-pointer, 300-grinding wheel and 400-load applying body.

1-a test bench, 11-a limiting rail, 2-a grinding wheel, 3-a transmission system, 4-a pulley, 5-a clamping device, 51-a first group of clamping upright columns, 52-a second group of clamping upright columns, 53-a locking piece, 531-a fixed cross bar, 532-a threaded telescopic rod, 533-a locking block, 6-a fixed pulley group, 61-a fixed pulley, 62-a tension rope, 63-a counterweight piece, 7-a force sensor, 8-a spark detector, 9-a light-proof cover body, 91-an observation lens barrel, 911-a first lens barrel, 912-a second lens barrel, 913-a prism and 10-a bolt.

Detailed Description

In order to make the technical solutions of the present application better understood, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "left" and "right" and the like indicate orientations or positional relationships based on operational states of the present application, and are only used for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation and be operated, and thus, should not be construed as limiting the present application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In order to facilitate understanding of the scheme provided by the embodiment of the application, firstly, according to the requirements of GB50209-2010 construction quality acceptance standard of construction ground engineering, for some special places, the building ground materials and products thereof need to be subjected to a non-ignitability performance test so as to prevent accidents such as explosion, fire and the like which seriously harm safety. Secondly, the performance test of the non-ignition property needs to be carried out according to the requirements in appendix A of GB50209-2010 construction ground engineering construction quality acceptance Specification, and specifically comprises the following steps: during the test, the rotating speed of the grinding wheel is controlled to be 600r/min-1000r/min, any part of the test piece is in contact with the rotating grinding wheel, 10N-20N of pressure is applied, and whether sparks occur at the friction position of the test piece and the grinding wheel is observed.

However, the existing test device for testing the non-ignitability of the building ground material and the product thereof can basically control the rotating speed of the grinding wheel, but cannot well control the pressure applied to the rotating grinding wheel by the test piece. In the test device shown in fig. 1, in each test process, an operator cannot know the pressure applied to the grinding wheel by the test piece during friction in real time, so that the test results of different persons are different, and even if the same person is used, the test results of two times are different. This results in a failure to make a true and effective determination of the misfire of the same building flooring material.

In order to solve the above technical problem, an embodiment of the present invention provides a testing apparatus for testing non-ignitability of a building floor material and a product thereof, as shown in fig. 2, comprising: the device comprises a test board 1, a grinding wheel 2, a transmission system 3, a pulley 4, a clamping device 5, a fixed pulley block 6 and a force sensor 7; the grinding wheel 2 and the pulley 4 are both positioned on the test board 1; the clamping device 5 is fixed on the pulley 4 and used for clamping a piece to be tested; the fixed pulley block 6 comprises a fixed pulley 61, a tension rope 62 matched with the fixed pulley 61, and a counterweight 63, wherein the fixed pulley 61 is fixed at the edge of the test bench 1, a first end of the tension rope 62 is connected with the pulley 4, and a second end of the tension rope 62 is connected with the counterweight 63; the force sensor 7 is mounted on the tension rope 62; the grinding wheel 2 is positioned between the fixed pulley 61 and the pulley 4, and the fixed pulley block 6 is used for driving the pulley 4 to move towards the grinding wheel 2, wherein the axial direction of the grinding wheel 2 is the same as the axial direction of the fixed pulley 61, and the axial direction of the grinding wheel 2 is perpendicular to the movement direction of the pulley 4 driven by the fixed pulley block 6; the grinding wheel 2 is connected with the transmission system 3.

During testing, a to-be-tested piece is fixed on the clamping device 5, and the pulley 4 is pulled towards the grinding wheel 2 through the fixed pulley block 6 until the to-be-tested piece on the clamping device 5 is contacted with the working surface of the grinding wheel 2. The rotating speed of the grinding wheel 2 is controlled by the transmission system 3, so that the rotating speed of the grinding wheel 2 meets the requirements in appendix A of GB50209-2010 construction ground engineering construction quality acceptance standard. In addition, the weight of the counterweight 63 can be adjusted, the force sensor 7 mounted on the tension rope 62 can be used for controlling the pressure applied to the grinding wheel 2 by the piece to be tested, namely, the gravity of the counterweight 63 is converted into the applied pressure of the piece to be tested through the fixed pulley 61, and the force sensor 7 on the tension rope 62 can be used for monitoring the pressure applied to the grinding wheel 2 by the piece to be tested in real time, so that the pressure applied to the grinding wheel 2 by the piece to be tested can meet the requirement in annex A of GB 09-2010 construction ground engineering construction quality acceptance criterion 502A, and the accuracy of the test result can be guaranteed.

The following describes in detail the components of the test apparatus for testing the non-ignition properties of construction floor materials and their products provided in the examples of the present application.

The test bench 1 may comprise a planar plate-like structure and a support structure, such as a support leg or a support frame, for supporting the planar plate-like structure, such that there is a distance difference between the planar plate-like structure and the ground, thereby enabling the end of the crown block 6 to which the counterweight 63 is connected to move in a direction perpendicular to the ground. It should be understood that the test bench 1 may only comprise a planar plate-like structure, and the planar plate-like structure is placed on the support frame during the test, which is not limited in this application.

The grinding wheel 2 is connected with a transmission system 3, and the transmission system 3 can comprise a transmission motor, a transmission motor speed changer and a transmission motor controller. The transmission motor controller can control the transmission motor speed changer to enable the grinding wheel 2 connected with the transmission motor speed changer to rotate according to the preset rotating speed. The transmission motor in the transmission system 3 can be fixedly installed on the test bench 1, the grinding wheel 2 can be connected with the transmission motor through a rotating shaft, the installed grinding wheel 2 is located above the test bench 1, wherein the size of the grinding wheel 2 meets the requirements in appendix A of GB50209-2010 construction ground engineering construction quality acceptance standard, namely the diameter of the grinding wheel 2 is 150 mm.

The trolley 4 is located on the test bench 1 and can slide on the test bench 1. The present application does not limit the structure of the trolley 4, for example: the trolley 4 may comprise a slide and a pulley, which slides the slide on the test bench 1. In this application coaster 4 is used for driving clamping device 5 to being close to the motion of emery wheel 2 direction to make the centre gripping contact at the testing spare of clamping device 5 with the working face of emery wheel 2. Wherein, clamping device 5 is fixed in 4 tops of coaster for the centre gripping waits to test the piece, and this application does not prescribe a limit to clamping device 5's structure, as long as can with wait to test the piece centre gripping, and not influence wait to test the piece and emery wheel 2 contact can.

Further, in order to enable the trolley 4 to accurately slide to a preset position, a limiting track 11 is further arranged on the test bench 1, and the trolley 4 slides in the limiting track 11 along the length direction of the limiting track 11. Wherein, emery wheel 2 is located between two tracks of spacing track 11.

In a particular example, as shown in fig. 2, the gripping device 5 comprises a first set of gripping uprights 51, a second set of gripping uprights 52 and a locking member 53; the first group of clamping columns 51 and the second group of clamping columns 52 may respectively include two clamping columns, and each clamping column is perpendicularly connected to the sliding plate of the pulley 4, wherein the first group of clamping columns 51 is fixed on the pulley 4 close to one side of the grinding wheel 2, and two clamping columns in the first group of clamping columns 51 are respectively arranged on two sides of the working surface of the grinding wheel 2, so as to prevent the first group of clamping columns 51 from blocking the contact between the test piece to be tested and the working surface of the grinding wheel 2. The second group of clamping columns 52 is located on the side far away from the grinding wheel 2 and is arranged opposite to the first group of clamping columns 51. The retaining member 53 is connected with the second group of clamping columns 52, and the retaining member 53 is used for fixing a to-be-tested piece between the first group of clamping columns 51 and the retaining member 53.

During testing, a to-be-tested piece is placed between the first group of clamping upright posts 51 and the second group of clamping upright posts 52, wherein one surface of the to-be-tested piece is abutted against the first group of clamping upright posts 51, the opposite surface of the to-be-tested piece, which is abutted against the first group of clamping upright posts 51, is abutted against the locking pieces 53, so that the to-be-tested piece is fixed between the first group of clamping upright posts 51 and the locking pieces 53, and the second group of clamping upright posts 52 are mainly used for fixing the locking pieces 53. The locking member 53 is not limited in the present application, for example, the locking member 53 may be a strong spring structure, so that the to-be-tested member can be clamped between the first group of clamping posts 51 and the locking member 53 under the action of elastic force.

In another specific example, retaining member 53 includes a fixed cross bar 531, a threaded telescoping bar 532, and a retaining block 533; the fixed cross bar 531 is fixed to the second group of clamping columns 52, wherein a threaded hole is formed in the center of the fixed cross bar 531, and the connection mode between the fixed cross bar 531 and the second group of clamping columns 52 is not limited in the application, for example, the fixed cross bar 531 may be detachably connected or non-detachably connected to the second group of clamping columns 52, and if the fixed cross bar 531 may be welded to the second group of clamping columns 52. The threaded telescopic rod 532 penetrates through the threaded hole and is in threaded connection with the fixed cross rod 531, and the length direction of the threaded telescopic rod 532 is the same as the movement direction of the pulley 4; the locking block 533 is fixedly connected to a first end of the telescopic screw rod 532, and the first end of the telescopic screw rod 532 is an end of the telescopic screw rod 532 located between the first group of clamping columns 51 and the second group of clamping columns 52.

The locking member 53 in the above example can adjust the distance between the locking block 533 and the first group of clamping columns 51 through the threaded telescopic rod 532 to adapt to different sizes of the pieces to be tested. In addition, the threaded connection mode of the threaded telescopic rod 532 and the fixed cross rod 531 is more stable than that of a strong spring, and the to-be-tested part clamped between the first group of clamping upright posts 51 and the locking block 533 can be prevented from falling off in the running process of the pulley 4. For the convenience of the tester, a rotating handle may be further connected to a second end of the threaded extension rod 532, wherein the second end of the threaded extension rod 532 is an end opposite to the first end of the threaded extension rod 532.

In yet another specific example, the outer surface of the second set of gripping studs 52 is threaded, wherein the second set of gripping studs 52 generally comprises two gripping studs and the outer surface of both gripping studs in the second set of gripping studs 52 is threaded. The fixed cross bar 531 is provided with through holes matched with the second group of clamping upright columns 52, the fixed cross bar 531 is sleeved on the second group of clamping upright columns 52 through the through holes, the fixed cross bar 531 is sleeved on the second group of clamping upright columns 52 and can move in the length direction of the second group of clamping upright columns 52, and nuts matched with the threads of the outer surface are further arranged on the second group of clamping upright columns 52, so that the fixed cross bar 531 can be fixed at the preset position of the second group of clamping upright columns 52 through the nuts.

It should be noted that the first group of clamping columns 51 may be a cylindrical structure, a square column structure, or other column structures, which is not limited in the present application. In order to increase the stability of the test piece on the holding device 5, in one embodiment, the friction between the test piece and the holding device 5 may be increased, for example: one surface of the locking block 533 facing the first group of clamping posts 51, and one surface of the first group of clamping posts 51 facing the locking block 533 are rough surfaces. In another embodiment, a backing device may be provided on the trolley 4 near the first set of clamping studs 51, and the backing device may be used to support the test piece.

The fixed pulley block 6 is used for driving the pulley 4 to move towards the grinding wheel 2, so that a to-be-tested piece clamped on the pulley 4 is in contact with the working surface of the grinding wheel 2. The fixed pulley block 6 comprises a fixed pulley 61, a tension rope 62 matched with the fixed pulley 61 and a counterweight 63, wherein the fixed pulley 61 is fixed on the edge of the test bench 1, the first end of the tension rope 62 is connected with the pulley 4, and the second end of the tension rope 62 is connected with the counterweight 63.

The tension rope 62 in the fixed pulley group 6 is divided into two sections which are perpendicular to each other by the fixed pulley 61, so that the first end of the tension rope 62 is positioned above the test bench 1, and the second end of the tension rope 62 is positioned below the test bench 1. The weight 63 is connected to the second end of the tension rope 62, and converts its own weight into a pressure applied by the test piece to the grinding wheel 2 through the fixed pulley 61, wherein the form of the weight 63 is not limited in the present application, for example, the weight 63 may be a weight with different weights. The weight of the counterweight 63 is adjusted by observing the reading of the force sensor 7 on the tension rope 62 until the reading of the force sensor 7 meets the requirements in appendix A of GB50209-2010 construction ground engineering construction quality acceptance Specification. The tensile cord 62 may be a steel wire rope or a rigid cord made of other materials, which is not limited in this application.

It should be understood that the grinding wheel 2 is located between the fixed pulley 61 and the pulley 4, wherein the axial direction of the grinding wheel 2 is the same as the axial direction of the fixed pulley 61, and the axial direction of the grinding wheel 2 is perpendicular to the moving direction of the pulley 4 driven by the fixed pulley block 6, so that the fixed pulley block 6 can drive the to-be-tested piece on the pulley 4 to contact with the working surface of the grinding wheel 2.

The force sensor 7 is an electronic component for converting a force signal into an electric signal to be output, so that the tension on the tension rope 62 can be visually seen through the force sensor 7, and the pressure applied to the grinding wheel 2 by the test piece to be tested when the test piece to be tested is in contact with the grinding wheel 2 can be accurately determined.

According to the requirement, the incombustibility test of the sample to be tested needs to be carried out in the darkroom, so that in order to avoid additionally searching the darkroom meeting the test environment when testing, the test device for testing the incombustibility of the building ground material and the product thereof, provided by the embodiment of the application, can further comprise a light-proof cover body 9, and the test board 1, the grinding wheel 2, the transmission system 3, the pulley 4, the clamping device 5, the fixed pulley block 6 and the force sensor 7 are all positioned in the light-proof cover body 9.

Further, as shown in fig. 3 and 4, in order to observe the test condition inside the light-shielding cover 9, an observation lens barrel 91 is disposed on the light-shielding cover 9, a first end of the observation lens barrel 91 is located inside the light-shielding cover 9, a second end of the observation lens barrel 91 is located outside the light-shielding cover 9, an objective lens may be installed at the first end of the observation lens barrel 91, an eyepiece may be installed at the second end of the observation lens barrel 91, and the installation position of the first end of the observation lens barrel 91 is based on the fact that the spark can be observed. It should be noted that, in the present application, the structure of the observation lens barrel 91 is not limited as long as the tester can observe the test condition inside the light-shielding cover 9 through the second end of the light-shielding cover 9. For example: the observation lens barrel 91 comprises a first lens barrel 911 and a second lens barrel 912 which are connected end to end, and the included angle between the first lens barrel 911 and the second lens barrel 912 is greater than or equal to 90 degrees and smaller than 180 degrees; a prism 913 is disposed inside a connection portion between the first lens barrel 911 and the second lens barrel 912, and the prism 913 is configured to reflect light rays from the first end of the observation lens barrel 91 to the second end of the observation lens barrel 91.

In another embodiment, a spark detector 8 can be further included, and the spark detector 8 can be used for detecting sparks generated by friction of the grinding wheel 2 and a sample to be measured. The spark detector 8 is generally arranged near the contact position of the grinding wheel 2 and the to-be-tested part, and a tester can judge whether the friction between the grinding wheel 2 and the to-be-tested part generates sparks or not according to signals sensed by the spark detector 8. Furthermore, the spark detector 8 may be connected to an alarm, which may alarm according to the signal sensed by the spark detector 8, for example, the alarm may generate a buzzer alarm or a flashing alarm.

It should be understood that the observation lens barrel 91 and the spark detector 8 may be provided at the same time in the embodiment of the present application, which is not limited by the present application.

The test device for testing the non-ignitability of the building ground material and the product thereof provided by the embodiment of the application can also comprise a device for fixing the pulley 4. For example, the edge of one side of the pulley 4, which is far away from the grinding wheel 2, and the edge of one side of the test board 1, which is far away from the grinding wheel 2, are respectively provided with a limiting jack, then, when a sample to be tested is installed, the bolt 10 can be inserted into the limiting jacks of the pulley 4 and the test board 1, so that the pulley 4 is fixed at a preset position, after the sample to be tested is installed, the bolt 10 is pulled out, and the fixed pulley block 6 drives the pulley 4 to move towards the grinding wheel 2 until a part to be tested on the pulley 4 contacts with the working surface of the grinding wheel 2.

The present application has been described in detail with reference to specific embodiments and illustrative examples, but the description is not intended to limit the application. Those skilled in the art will appreciate that various equivalent substitutions, modifications or improvements may be made to the presently disclosed embodiments and implementations thereof without departing from the spirit and scope of the present disclosure, and these fall within the scope of the present disclosure. The protection scope of this application is subject to the appended claims.

Claims (10)

1. A test device for testing the non-ignitability of building floor materials and products thereof, comprising: the device comprises a test bench (1), a grinding wheel (2), a transmission system (3), a pulley (4), a clamping device (5), a fixed pulley block (6) and a force sensor (7);

the grinding wheel (2) and the pulley (4) are both positioned on the test bench (1);

the clamping device (5) is fixed on the pulley (4) and used for clamping a piece to be tested;

the fixed pulley block (6) comprises a fixed pulley (61), a tension rope (62) matched with the fixed pulley (61), and a counterweight (63), wherein the fixed pulley (61) is fixed at the edge of the test bench (1), a first end of the tension rope (62) is connected with the pulley (4), and a second end of the tension rope (62) is connected with the counterweight (63);

the force sensor (7) is arranged on the tension rope (62);

the grinding wheel (2) is positioned between the fixed pulley (61) and the pulley (4), the fixed pulley block (6) is used for driving the pulley (4) to move towards the grinding wheel (2), the axial direction of the grinding wheel (2) is the same as the axial direction of the fixed pulley (61), and the axial direction of the grinding wheel (2) is perpendicular to the movement direction of the pulley (4) driven by the fixed pulley block (6);

the grinding wheel (2) is connected with the transmission system (3).

2. The test device for testing the misfire of the building floor material and the products thereof according to the claim 1 is characterized in that the test bench (1) further comprises a limit track (11), and the trolley (4) slides in the limit track (11) along the length direction of the limit track (11).

3. The test device for testing the misfire of building floor materials and products thereof according to claim 1, characterized in that the holding device (5) comprises a first set of holding columns (51), a second set of holding columns (52) and a locking piece (53);

the first group of clamping columns (51) are fixed on one side, close to the grinding wheel (2), of the pulley (4), wherein two clamping columns in the first group of clamping columns (51) are respectively arranged on two sides of the working surface of the grinding wheel (2);

the second group of clamping columns (52) are positioned on one side far away from the grinding wheel (2) and are arranged opposite to the first group of clamping columns (51);

retaining member (53) with second group centre gripping stand (52) are connected, retaining member (53) are used for with the examination to be tested be fixed in between first group centre gripping stand (51) and retaining member (53).

4. A test unit for testing the non-ignitability of construction floor materials and products thereof according to claim 3, wherein the locking member (53) comprises a fixed cross bar (531), a threaded telescopic bar (532) and a locking block (533);

the fixed cross bar (531) is fixed on the second group of clamping upright columns (52), wherein the center of the fixed cross bar (531) is provided with a threaded hole;

the threaded telescopic rod (532) penetrates through the threaded hole and is in threaded connection with the fixed cross rod (531), and the length direction of the threaded telescopic rod (532) is the same as the movement direction of the pulley (4);

the locking block (533) is fixedly connected to a first end of the threaded telescopic rod (532), and the first end of the threaded telescopic rod (532) is the end of the threaded telescopic rod (532) between the first group of clamping columns (51) and the second group of clamping columns (52).

5. The test device for testing the non-ignitability of the building floor materials and the products thereof according to claim 4, wherein the outer surface of the second group of clamping columns (52) is provided with screw threads, the fixed cross bar (531) is provided with through holes matched with the second group of clamping columns (52), and the fixed cross bar (531) is sleeved on the second group of clamping columns (52) through the through holes and fixed at the preset position of the second group of clamping columns (52) through nuts.

6. The test device for testing the misfire of building floor materials and products thereof according to claim 4, wherein the face of the locking block (533) facing the first set of clamping studs (51) and the face of the first set of clamping studs (51) facing the locking block (533) are rough.

7. The test device for testing the misfire property of the building floor material and the products thereof according to claim 1, further comprising a spark detector (8), wherein the spark detector (8) is used for detecting sparks generated by the friction of the grinding wheel (2) and the samples to be tested.

8. The test device for testing the non-ignitability of the building ground materials and the products thereof according to claim 1, further comprising a light-proof cover (9), wherein the test bench (1), the grinding wheel (2), the transmission system (3), the pulley (4), the clamping device (5), the crown block (6) and the force sensor (7) are all positioned in the light-proof cover (9);

an observation lens cone (91) is arranged on the light-proof cover body (9), the first end of the observation lens cone (91) is positioned in the light-proof cover body (9), and the second end of the observation lens cone (91) is positioned outside the light-proof cover body (9).

9. The testing device for testing the non-ignitability of the building ground material and the products thereof according to claim 8, wherein the observation lens barrel (91) comprises a first lens barrel (911) and a second lens barrel (912) which are connected end to end, and the included angle between the first lens barrel (911) and the second lens barrel (912) is greater than or equal to 90 degrees and less than 180 degrees;

a prism (913) is arranged inside the joint of the first lens barrel (911) and the second lens barrel (912), and the prism (913) is used for reflecting the light rays at the first end of the observation lens barrel (91) to the second end of the observation lens barrel (91).

10. The test device for testing the misfire of building flooring and products thereof according to claim 1, further comprising a latch (10);

the edge of one side, far away from the grinding wheel (2), of the pulley (4) and the edge of one side, far away from the grinding wheel (2), of the test bench (1) are respectively provided with limiting insertion holes matched with the insertion pins (10).

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