CN217237469U - Large-size non-metallic material bending tester - Google Patents

Abstract

The utility model discloses anti testing machine of rolling over of jumbo size non-metallic material, by the stand that erects the section and the continuous constitution of cantilever section contained angle, can reduce the area that occupies the workstation, only shelter from the partly of one side of workstation, consequently, can place the anti sample of rolling over of bigger area size, no longer need cut the anti sample of rolling over of big area size, the test process is convenient and fast more, because first supporting roller, the second supporting roller sets up with dismantling of last compression roller, consequently, can also change different first supporting roller, second supporting roller and last compression roller, in order to realize carrying out the anti test of the sample of different materials on same platform testing machine.

Description

Large-size non-metallic material bending tester

Technical Field

The utility model belongs to the technical field of the experimental technique of anti book and specifically relates to an anti testing machine of rolling over of jumbo size non-metallic material is related to.

Background

The non-metallic material bending resistance test machine mainly aims at paper-faced gypsum boards, artificial boards, tiles, ceramic rock boards, stones and other brittle materials to carry out three-point bending or four-point bending tests, for example, when the test force is greater than or equal to the limit value of a sample, the sample can be suddenly broken, and according to the maximum load when the sample is broken, the bending strength, the breaking modulus and other related test data of the sample are calculated according to the related standards meeting the sample. Research shows that most of domestic non-metal material bending testing machines rarely concentrate the non-metal materials to be subjected to bending tests on the same equipment, particularly in recent years, a ceramic rock plate is widely applied as a novel ceramic product, but the size of the ceramic rock plate is larger, and the size of some ceramic rock plates exceeds 4 meters; with the implementation of T/CBMCA 015-2020 ceramic rock plate product Specification, the fracture resistance test method thereof is as follows GB/T3810.4-2016 ceramic brick test method part 4: the requirements in the determination of modulus of rupture and breaking strength are carried out, before the bending test is carried out on the ceramic rock plate with larger size, the ceramic rock plate is cut, and the bending test is carried out according to the proper size.

Therefore, the industry needs to be able to perform the bending test on a plurality of large-sized non-metallic materials on the same equipment.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an anti testing machine that rolls over of jumbo size non-metallic material can realize carrying out the anti test of the large tracts of land size sample of different materials on same test machine.

In a first aspect, the utility model provides a large-size non-metallic material bending test machine, which comprises a workbench, a first supporting roller, a second supporting roller, a stand column, a loading device, an upper compression roller and a pressure sensor; the first supporting roller and the second supporting roller are longitudinally and detachably arranged on the workbench, wherein the first supporting roller can rotate around the axis of the first supporting roller, and the second supporting roller can swing on a vertical surface; the upright column is transversely positioned between the first supporting roller and the second supporting roller and comprises a vertical section and a cantilever section which are connected in an included angle, the vertical section is vertically connected to the workbench, and the cantilever section is positioned above the workbench; the loading device is arranged on the cantilever section; the upper pressing roller is longitudinally detachably connected to the loading device and can swing on a vertical surface, a swing plane is parallel to that of the second supporting roller, and the upper pressing roller can be driven by the loading device to press towards the workbench or be far away from the workbench; the pressure sensor is used for detecting the actual pressure applied to the upper pressing roller.

In optional embodiment, loading attachment including the servo drive subassembly, lifting unit and the coupling assembling that connect gradually, the servo drive subassembly set up in the cantilever section, coupling assembling is connected with and is fore-and-aft last compression roller seat, the middle part of going up the compression roller can be dismantled articulate in the middle part of going up the compression roller seat.

In an alternative embodiment, the upright section is provided with a vertical guide device, and one end of the upper press roll is in sliding fit with the guide device.

In an alternative embodiment, the guide device comprises a vertical guide bar, and one end of the upper pressing roller is provided with a guide groove in sliding fit with the guide bar.

In an optional implementation mode, a first supporting roller seat and a second supporting roller seat which are longitudinal are arranged on the workbench, the first supporting roller seat and the second supporting roller seat are respectively located on two lateral sides of the upright column, two ends of the first supporting roller are respectively in rotatable fit with two ends of the first supporting roller seat, and the middle of the second supporting roller is detachably hinged to the middle of the second supporting roller seat.

In an optional embodiment, an adjusting device is arranged on the workbench and used for adjusting the transverse distance between the first supporting roller seat and the second supporting roller seat.

In an optional embodiment, the adjusting device includes a driving source, a first lead screw, a second lead screw, a first sliding plate and a second sliding plate, the first lead screw and the second lead screw are transversely and rotatably disposed on the workbench, the driving source is in transmission connection with one end of the first lead screw, the other end of the first lead screw is connected with one end of the second lead screw, the first lead screw and the second lead screw have opposite spiral directions, the first sliding plate and the second sliding plate are respectively in threaded fit with the first lead screw and the second lead screw and are respectively in sliding fit with the workbench, and the first supporting roller seat and the second supporting roller seat are respectively fixed on the first sliding plate and the second sliding plate.

In an alternative embodiment, a retractable dust cover is disposed on the working platform, and the dust cover is connected with the first sliding plate and the second sliding plate.

In an alternative embodiment, the first sliding plate or the second sliding plate is provided with a pointer, and the workbench is further provided with a scale extending transversely.

In an optional embodiment, a cantilever box is arranged on the cantilever section, and is provided with a control computer;

and/or the presence of a gas in the atmosphere,

the surface of the first supporting roller, the surface of the second supporting roller and the surface of the upper pressing roller are all covered with felts;

and/or the presence of a gas in the gas,

the bottom surface of the workbench is also provided with at least three height-adjustable feet.

The utility model discloses jumbo size non-metallic material bending test machine, through set up on the workstation can be around self axis pivoted first backup roll and can be at vertical face wobbling second backing roll, set up the stand again between first backup roll and second backing roll, set up the compression roller in the loading device drive on the stand, and the swing plane of going up the compression roller is parallel with the swing plane of second backing roll, consequently when experimental, the sample can always with first backup roll, second backing roll and last compression roller in close contact with, guarantee the homogeneity of atress and the validity of result, meanwhile, detect the actual pressure that the compression roller received through pressure sensor, loading device can go up the compression roller according to actual pressure drive and wait the load loading to the experiment, guarantee the accuracy of test result. Wherein, by the stand that erects the section and the continuous constitution of cantilever section contained angle, can reduce the area that occupies the workstation, only shelter from the partly of one side of workstation, consequently, can place the anti sample of rolling over of large tracts of land size, no longer need with the anti sample cutting of rolling over of large tracts of land size, the test process is convenient and fast more, because first backing roll, the detachable setting of second backing roll and last compression roller, consequently, can also change different first backing roll, second backing roll and last compression roller, in order to realize carrying out the anti test of the sample of different materials on same platform test machine.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in 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 invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a front view of an embodiment of the present invention;

FIG. 2 is a side view of FIG. 1;

fig. 3 is a top view of fig. 1.

An icon: 10-a workbench; 12-ground feet; 14-a first support roll; 16-a first backup roll holder; 18-a second support roll; 20-a second support roller seat; 22-a dust cover; 24-a column; 241-vertical section; 242-a cantilever segment; 26-a drive source; 28-a first lead screw; 30-a first sled; 32-a second lead screw; 34-a second sled; 36-a servo drive assembly; 38-a lifting assembly; 39-a speed reducer; 40-a connecting assembly; 41-upper cover; 42-a pressure sensor; 44-upper compression roller seat; 46-upper press roll; 48-a guide; 50-cantilever box.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Some embodiments of the present invention will be described in detail below with reference to fig. 1 to 3. The embodiments and features of the embodiments described below can be combined with each other without conflict.

The embodiment of the utility model provides a jumbo size non-metallic material bending test machine, including workstation 10, first backing roll 14, second backing roll 18, stand 24, loading device, go up compression roller 46 and pressure sensor 42.

The working platform 10 mainly plays a bearing role, and is placed on the ground through at least three height-adjustable ground feet 12 arranged on the bottom surface, and the levelness of the working surface of the working platform 10 can be enabled due to the height adjustment of the ground feet 12. The number of the legs 12 is three or more, and the table 10 can be supported.

First backing roll 14 and second backing roll 18 all are vertical detachably and set up on workstation 10, and first backing roll 14 and second backing roll 18 are in horizontal side by side, and wherein, first backing roll 14 can rotate around self axis, and second backing roll 18 can swing at vertical face to bear the weight of the plate body that needs to carry out the bending test such as thistle board, wood-based plate, tile, ceramic brick, ceramic rock plate, stone material and other brittle materials. Moreover, because first backing roll 14 and second backing roll 18 are all can dismantle the setting, consequently can change the first backing roll 14 and the second backing roll 18 of different grade type and size to concentrate on the same anti-bending test machine and carry out the anti-bending test of all kinds of non-metallic material. Wherein the surfaces of the first and second supporting rollers 14 and 18 are covered with felt having a thickness of 10 mm.

Further, a first supporting roller seat 16 and a second supporting roller seat 20 which are longitudinal are arranged on the workbench 10, two ends of the first supporting roller 14 are respectively in rotatable fit with two ends of the first supporting roller seat 16, and the middle part of the second supporting roller 18 is detachably hinged to the middle part of the second supporting roller seat 20.

Specifically, the two ends of the first supporting roller seat 16 are respectively provided with a notch, and the two ends of the first supporting roller 14 are respectively and rotatably matched with the two notches, so that the first supporting roller 14 can rotate around the axis of the first supporting roller seat 16 relative to the first supporting roller seat, and the first supporting roller 14 can be directly replaced and detached from the first supporting seat. The middle part of the second supporting roll 18 is hinged with the middle part of the second supporting roll seat 20 through a hinged shaft, two ends of the hinged shaft penetrate out of two sides of the second supporting roll seat 20 and can be connected through two nuts respectively, and therefore the second supporting roll 18 can be replaced and detached from the second supporting roll seat 20.

In this embodiment, the worktable 10 is provided with an adjusting device for adjusting the transverse distance between the first supporting roller seat 16 and the second supporting roller seat 20, so that the transverse distance can be adjusted according to the transverse dimension of the anti-bending sample, and the first supporting roller 14 and the second supporting roller 18 can be pressed by the anti-bending sample.

Further, the adjusting device includes a driving source 26, a first lead screw 28, a second lead screw 32, a first sliding plate 30 and a second sliding plate 34, the first lead screw 28 and the second lead screw 32 are transversely and rotatably disposed on the workbench 10, the driving source 26 may be a motor, and is in transmission connection with one end of the first lead screw 28, the other end of the first lead screw 28 is connected with one end of the second lead screw 32, the spiral directions of the first lead screw 28 and the second lead screw 32 are opposite, the first sliding plate 30 and the second sliding plate 34 are respectively in threaded fit with the first lead screw 28 and the second lead screw 32, and are both in sliding fit with the workbench 10, and the first supporting roller seat 16 and the second supporting roller seat 20 are respectively fixed on the first sliding plate 30 and the second sliding plate 34.

The first lead screw 28 is thus driven to rotate by the drive source 26, and, due to the connection of the first lead screw 28 to one end of the second lead screw 32, the second threaded spindle 32 is therefore carried by the first threaded spindle 28, rotating synchronously with the first threaded spindle 28, and at the same time, since the first and second slide plates 30 and 34 are screw-fitted to the first and second lead screws 28 and 32, respectively, and are slidably fitted to the table 10, therefore, the first sliding plate 30 will generate a screw motion with the first lead screw 28, the second sliding plate 34 will generate a screw motion with the second lead screw 32, and since the screw directions of the first lead screw 28 and the second lead screw 32 are opposite, therefore, depending on the direction of rotation of the first lead screw 28, the first slide plate 30 and the second slide plate 34 will move toward or away from each other, so that the first and second support rollers 14 and 18 are close to or away from each other, and the interval between the first and second support rollers 14 and 18 is changed.

In this embodiment, the workbench 10 is further provided with a retractable dust cover 22, and the dust cover 22 is connected with the first sliding plate 30 and the second sliding plate 34, so as to be retractable under the driving of the first sliding plate 30 and the second sliding plate 34, so as to protect the first lead screw 28 and the second lead screw 32, and avoid the transmission influence caused by dirt such as dust.

In addition, the first sliding plate 30 or the second sliding plate 34 is provided with a pointer, and the worktable 10 is further provided with a scale extending transversely, so that an operator can clearly determine the center distance between the first supporting roller 14 and the second supporting roller 18 by the pointer corresponding to the position on the scale.

The column 24 is disposed on the table 10 and is located between the first supporting roller base 16 and the second supporting roller base 20 in the lateral direction, that is, the first supporting roller base 16 and the second supporting roller base 20 are respectively located on both sides of the column 24 in the lateral direction, and therefore the column 24 is also located between the first supporting roller 14 and the second supporting roller 18. The column 24 includes a vertical section 241 and a cantilever section 242 connected at an included angle, the vertical section 241 is vertically connected to the working platform 10, and the cantilever section 242 is located above the working platform 10.

The occupied space of the column 24 on the workbench 10 is small, and the column is separated only on one side of the workbench 10, so that the size of the workbench 10 is larger, and the anti-bending sample with larger area size can be placed on the first supporting roller 14 and the second supporting roller 18, so that the anti-bending test can be performed on the anti-bending sample with large area size.

A loading device is provided on the cantilever section 242 for driving the upper press roller 46 toward the table 10 or away from the table 10 to perform the bending test in the case where the cover 41 has the bending test piece on the first support roller 14 and the second support roller 18.

In this embodiment, the loading device includes a servo drive assembly 36, a lift assembly 38, and a connecting assembly 40 connected in series. The servo driving assembly 36 is arranged on the cantilever section 242, the connecting assembly 40 is connected with a longitudinal upper press roller seat 44, the middle part of the upper press roller 46 is detachably hinged on the middle part of the upper press roller seat 44, and the upper press roller 46 can swing on a vertical plane, the plane of oscillation of which is parallel to the plane of oscillation of the second support roller 18, whereby the servo-drive assembly 36 drives the upper pressure roller 46 towards the table 10 or away from the table 10, and when the upper compression roller 46 presses the bending-resistant sample to perform the bending-resistant test, the bending-resistant sample can be always in close contact with the first supporting roller 14, the second supporting roller 18 and the upper compression roller 46 at the same time, so that the uniformity of stress and the validity of a result are ensured, the accuracy of a test result is ensured, and in addition, because the upper pressure roller 46 is detachably connected, the upper pressure roller 46 with different types and sizes can be replaced to adapt to various bending samples made of non-metal materials.

Specifically, the servo drive assembly 36 of the loading device can control the upper compression roller 46 through the actual pressure that the upper compression roller 46 detected by the pressure sensor 42 receives, so that when the upper compression roller 46 is pressed on the anti-bending sample, the upper compression roller is pressed down according to the detection result of the pressure sensor 42 at any time, thereby realizing the uniform loading function, and enabling the stress of the anti-bending sample to be uniformly increased. Therefore, the servo drive assembly 36 drives the upper roller 46 to smoothly and reliably apply force. The loading force value adopts an equal-load and equal-displacement loading mode, and the loading speed is uniform and adjustable.

In this embodiment, the pressure sensor 42 may be disposed between the lifting assembly 38 and the connecting assembly 40, such that the pressure sensor 42 is connected to the upper platen 44 through the connecting assembly 40, the servo motor is connected to the lifting assembly 38 through the speed reducer 39 disposed on the cantilever segment 242, the lifting assembly 38 may be a screw transmission pair, a nut of the screw transmission pair is in transmission connection with the speed reducer 39, and a screw rod of the screw transmission pair can only move in an up-and-down direction relative to the cantilever segment 242 and cannot rotate, so that when the servo motor drives the nut of the screw transmission pair to rotate through the speed reducer 39, the screw rod of the screw transmission pair performs a screw transmission relative to the nut to move up and down, and the up-and-down movement of the upper platen 46 is realized to press against the worktable 10 or move away from the worktable 10. In order to protect the lifting assembly 38 and prevent contamination, an upper cover 41 is further disposed on the cantilever segment 242 to protect the screw. It should be noted that the connecting assembly 40 is only required to realize the elements of the lifting assembly 38 and the upper roller base 44, and is not particularly limited in the embodiment, and may be a rod, for example. The surface of the upper press roll 46 was covered with 10mm thick felt.

In this embodiment, the vertical section 241 is provided with a vertical guide 48, one end of the upper press roller 46 is slidably engaged with the guide 48, and the guide 48 is engaged with one end of the upper press roller 46, so that the loading device can ensure that the upper press roller 46 does not shift when the upper press roller 46 is driven to ascend or descend.

Specifically, the guiding device 48 includes a vertical guiding bar, and one end of the upper pressing roller 46 is provided with a guiding groove in sliding fit with the guiding bar.

In addition, in this embodiment, the cantilever section 242 is provided with the cantilever box 50, the cantilever box 50 is provided with a control computer, the control computer may include a tablet computer and a plurality of operation keys, the plurality of operation keys are respectively used for controlling the lifting of the upper pressure roller 46 and the movement of the first supporting roller 14 and the second supporting roller 18 in the opposite direction or in the opposite direction, the operation interface of the tablet computer may set a loading speed and related parameters of the sample, the loading control of the sample is automatically completed, during the loading process, the pressure curve display is provided, and the test result data is automatically calculated.

In the experiment of the ceramic tile sample using this example, the following operations can be described:

firstly, placing a testing machine on a firm platform or the ground, and adjusting a ground leg 12 to fix equipment and adjust the level of the equipment; the upper press roll 46, the first support roll 14 and the second support roll 18 for the bending test were installed according to the samples.

A power supply is connected, and a main power switch is turned on. The cantilever box 50 is pulled to a position suitable for the test, the tablet computer is turned ON, the power switch is turned to the "ON" position, and the adjusting device is turned to the "ON" position.

Operating the supporting roller adjusting button and the speed regulating knob on the cantilever box 50 according to the size of the sample to enable the sliding plate to act, adjusting the distance between the left supporting roller and the right supporting roller, and setting a loading mode, a loading speed and related parameters of the sample through an operation interface of the tablet personal computer.

And fourthly, rotating a button on the cantilever box 50 to a running position, pressing a quick descending button to enable the upper compression roller 46 to descend quickly, stopping operation after the upper compression roller approaches the surface of the sample, clicking a computer screen to start the test, loading the sample by the upper compression roller 46 according to computer program control setting, displaying a pressure curve at the same time, and completing the test until the sample is broken and the loading is stopped.

Pressing the return button raises the upper press roller 46 to the initial position to prepare for the next test.

Sixthly, automatically calculating and saving test result data, and generating a report to view.

And repeating the steps 3 to 5 after the test is continued, otherwise, rotating the operation button to a stop position, and turning off the power switch and the tablet computer.

To sum up, the large-size non-metallic material bending tester provided by the embodiment of the invention comprises a workbench 10, a first supporting roller 14, a second supporting roller 18, a stand column 24, a loading device, an upper compression roller 46 and a pressure sensor 42; the first supporting roller 14 and the second supporting roller 18 are longitudinally and detachably arranged on the workbench 10, wherein the first supporting roller 14 can rotate around the axis of the first supporting roller 14, and the second supporting roller 18 can swing on a vertical surface; the upright column 24 is located between the first support roller 14 and the second support roller 18 in the transverse direction and comprises an upright section 241 and a cantilever section 242 which are connected in an included angle, the upright section 241 is vertically connected to the workbench 10, and the cantilever section 242 is located above the workbench 10; the loading device is disposed on the cantilever segment 242; the upper press roll 46 is longitudinally detachably connected to the loading device and can swing on a vertical surface, the swing plane is parallel to the swing plane of the second support roll 18, and the upper press roll 46 can be driven by the loading device to press towards the workbench 10 or be far away from the workbench 10; the pressure sensor 42 is used to detect the actual pressure to which the upper pressure roller 46 is subjected.

Therefore, the first supporting roller 14 capable of rotating around the axis of the workbench 10 and the second supporting roller 18 capable of swinging on the vertical surface are arranged on the workbench 10, the stand column 24 is arranged between the first supporting roller 14 and the second supporting roller 18, the loading device is arranged on the stand column 24 to drive the upper compression roller 46, and the swinging plane of the upper compression roller 46 is parallel to the swinging plane of the second supporting roller 18, so that a sample can be always in close contact with the first supporting roller 14, the second supporting roller 18 and the upper compression roller 46 during testing, the uniformity of stress and the effectiveness of a result are ensured, meanwhile, the actual pressure borne by the upper compression roller 46 is detected through the pressure sensor 42, the loading device can drive the upper compression roller 46 to perform equal-load loading on the test according to the actual pressure, and the accuracy of the test result is ensured. Wherein, by the stand 24 that erects the section 241 and the continuous constitution of cantilever section 242 contained angle, can reduce the area that occupies workstation 10, only shelter from the partly of one side of workstation 10, consequently, the bending test sample of bigger size of area can be placed, no longer need with the cutting of the bending test sample of big size of area, the test process is convenient and fast more, because first backing roll 14, second backing roll 18 and last compression roller 46's dismantled setting, consequently, can also change different first backing roll 14, second backing roll 18 and last compression roller 46, in order to realize carrying out the bending test of the sample of different materials on same platform of test machine.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (10)

1. A large-size non-metallic material bending test machine is characterized by comprising a workbench, a first supporting roller, a second supporting roller, an upright post, a loading device, an upper pressing roller and a pressure sensor; the first supporting roller and the second supporting roller are longitudinally and detachably arranged on the workbench, wherein the first supporting roller can rotate around the axis of the first supporting roller, and the second supporting roller can swing on a vertical surface; the upright column is transversely positioned between the first supporting roller and the second supporting roller and comprises a vertical section and a cantilever section which are connected in an included angle manner, the vertical section is vertically connected to the workbench, and the cantilever section is positioned above the workbench; the loading device is arranged on the cantilever section; the upper pressing roller is longitudinally detachably connected to the loading device and can swing on a vertical surface, a swing plane is parallel to that of the second supporting roller, and the upper pressing roller can be driven by the loading device to press towards the workbench or be far away from the workbench; the pressure sensor is used for detecting the actual pressure applied to the upper pressing roller.

2. The bending tester for the large-size non-metallic materials according to claim 1, wherein the loading device comprises a servo driving assembly, a lifting assembly and a connecting assembly which are sequentially connected, the servo driving assembly is arranged on the cantilever section, the connecting assembly is connected with a longitudinal upper compression roller seat, and the middle part of the upper compression roller is detachably hinged to the middle part of the upper compression roller seat.

3. The machine for testing the bending resistance of large-size non-metallic materials according to claim 1, wherein the vertical section is provided with a vertical guide device, and one end of the upper compression roller is in sliding fit with the guide device.

4. The bending tester for large-size non-metallic materials according to claim 3, wherein the guiding device comprises a vertical guiding strip, and one end of the upper pressing roller is provided with a guiding groove in sliding fit with the guiding strip.

5. The bending test machine for large-size non-metallic materials according to claim 1, wherein a first supporting roller seat and a second supporting roller seat are arranged on the workbench in a longitudinal direction, the first supporting roller seat and the second supporting roller seat are respectively arranged on two sides of the vertical column in the transverse direction, two ends of the first supporting roller are respectively in rotatable fit with two ends of the first supporting roller seat, and the middle of the second supporting roller is detachably hinged to the middle of the second supporting roller seat.

6. The bending tester for large-size non-metallic materials according to claim 5, wherein the workbench is provided with an adjusting device for adjusting the transverse distance between the first supporting roller seat and the second supporting roller seat.

7. The machine according to claim 6, wherein the adjusting device comprises a driving source, a first lead screw, a second lead screw, a first sliding plate and a second sliding plate, the first lead screw and the second lead screw are transversely and rotatably disposed on the worktable, the driving source is in transmission connection with one end of the first lead screw, the other end of the first lead screw is connected with one end of the second lead screw, the first lead screw and the second lead screw have opposite screw directions, the first sliding plate and the second sliding plate are respectively in threaded fit with the first lead screw and the second lead screw and are respectively in sliding fit with the worktable, and the first supporting roller seat and the second supporting roller seat are respectively fixed on the first sliding plate and the second sliding plate.

8. The bending tester for the large-size non-metallic materials according to claim 7, wherein a telescopic dust cover is arranged on the workbench and connected with the first sliding plate and the second sliding plate.

9. The machine for testing the bending resistance of large-size non-metallic materials according to claim 7, wherein the first sliding plate or the second sliding plate is provided with a pointer, and the worktable is further provided with a scale extending transversely.

10. The bending tester for large-size non-metallic materials according to claim 1, wherein a cantilever box is arranged on the cantilever section, and the cantilever box is provided with a control computer;

and/or the presence of a gas in the gas,

the surface of the first supporting roller, the surface of the second supporting roller and the surface of the upper pressing roller are all covered with felts;

and/or the presence of a gas in the gas,

the bottom surface of the workbench is also provided with at least three height-adjustable feet.

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