Aluminum roll compression test device and test method

Abstract

The invention provides an aluminum roller compression test device and method, and relates to the technical field of roller compression test devices.The aluminum roller compression test device comprises a base, supporting plates are fixedly installed on the two sides of the base, a cross beam is further fixedly installed between the supporting plates on the two sides, and a plurality of rolling blocks are installed on the cross beam in a lifting mode; roller pressing plates are mounted above the supporting plates on the two sides in a lifting manner; the air pump pumps gas into the aluminum roller through a pipeline so that a high atmospheric pressure environment can be formed in the aluminum roller, and a Mohs hardness detection tool bit is fixedly installed at the end, close to the aluminum roller, of the lifting connecting rod. The detection mode of the compressive strength is diversified, point and surface compressive strength detection of the roll shaft can be met, meanwhile, the fracture time of the roll shaft is rapidly judged by pressurizing the interior of the roll shaft, the method is more accurate and efficient compared with a human eye observation mode, and the diversified detection requirements of the roll shaft are effectively enriched.

Description

Technical Field

[0001] The invention relates to the technical field of roller compression test devices, in particular to an aluminum roller compression test device and a test method. Background Art

[0002] The utility model discloses a steel pipe performance testing equipment for engineering inspection, wherein a slide groove is arranged on the left and right sides of the upper surface of the base, and a fixed clamping unit is fixed on the upper surface of the base near the rear side of the slide groove, and a movable clamping unit is movably installed in the slide groove, and a screw hole penetrating to the front side of the base is arranged on the inner side of the slide groove, and a rotating rod is installed in the screw hole, and the rotating rod can be rotated to push the movable clamping unit and the fixed clamping unit to clamp the steel pipe to be tested; a side plate is arranged on the rear side of the upper surface of the base, a side pressure push rod is installed on the front side of the side plate, a top plate is fixed on the top of the side plate, and a downward pressure push rod is installed on the lower surface of the top plate, and an installation groove for placing the installation part is arranged on the upper surface of the base below the downward pressure push rod, and the bending performance test of the steel pipe can be carried out by using the side pressure push rod, after the installation part is installed, the steel pipe is placed on the top of the installation part, and the compression resistance test of the steel pipe can be carried out by using the downward pressure push rod, and the testing equipment has a high degree of integration, and has the functions of compression resistance and bending resistance detection, and has good practicality.

[0003] The above-mentioned device is used to perform compression test on steel pipes. However, for rollers, the performance parameters of the rollers also need to be tested. For the compressive strength of the rollers, the test device used is similar to the above-mentioned steel pipe performance testing equipment, so it can be transferred to the field of compressive strength testing of rollers. However, the above-mentioned device still has obvious defects during use: the above-mentioned device only performs compression test on a specific position through a push rod, and its detection form is relatively simple. In the compression fracture test of the roller, the traditional detection method is to use manual observation of cracks. This observation method requires frequent equipment pauses, and it is difficult for the human eye to accurately identify microcracks on the surface of the roller, which causes inaccurate test data. Summary of the invention

[0004] The object of the present invention is to provide an aluminum roller axial compression test device and a test method to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] An aluminum roller axial pressure test device comprises a base, support plates are fixedly installed on both sides of the base, a crossbeam is fixedly installed between the support plates on both sides, a plurality of roller pressure blocks are installed on the crossbeam in a lifting manner, and a roller pressure plate is also installed above the support plates on both sides in a lifting manner, the roller pressure plate is provided with roller pressure grooves corresponding to the roller pressure blocks one by one, and the sides of the roller pressure grooves are slidingly and translationally installed with matching blocks, the matching blocks are abutted against or separated from the roller pressure blocks by sliding translationally, when the matching blocks abut against the roller pressure blocks, the roller pressure blocks are synchronously lowered during the descending process of the roller pressure plate, when the matching blocks are separated from the abutment with the roller pressure blocks, the roller pressure blocks remain stationary during the descending process of the roller pressure plate, and the roller pressure block is arranged above the aluminum roller at one end away from the roller pressure plate;

[0007] The aluminum roller is movably assembled through sealing assemblies installed on the support plates on both sides. A sealing connection ring is movably installed at the axis of one side of the sealing assembly. The sealing connection ring is connected to an air pump through a pipeline. The air pump pumps gas into the aluminum roller through the pipeline to form a high atmospheric pressure environment inside the aluminum roller. A rotating motor is also fixedly installed on the support plate. The driving shaft of the rotating motor is connected to the sealing assembly on one side. The aluminum roller is driven to rotate by the rotation of the rotating motor. The sealing assembly is located inside the aluminum roller and is also equipped with an air pressure sensor;

[0008] Several roller blocks are provided with lifting connecting rods, and a Mohs hardness detection cutter head is fixedly installed on one end of the lifting connecting rod close to the aluminum roller. The Mohs hardness values ​​of several Mohs hardness detection cutter heads increase or decrease gradually from one side to the other side. The lifting connecting rod protrudes from the roller block on one side away from the Mohs hardness detection cutter head. The Mohs hardness detection cutter head is retracted into the cutter head groove at the bottom of the roller block without external force. When the lifting connecting rod abuts against the matching block, the matching block pushes the Mohs hardness detection cutter head to protrude from the roller block. The protruding Mohs hardness detection cutter head is abutted against the surface of the aluminum roller, and the aluminum roller is driven to rotate on a fixed axis by the rotating motor, thereby performing Mohs hardness detection on the aluminum roller.

[0009] Preferably, the mechanism for driving the roller plate to perform translational and lifting movements is a hydraulic telescopic cylinder or a translational screw.

[0010] Preferably, the mechanism for driving the roller plate to perform translational and lifting movements is a translational screw, and a pair of translational screws are provided. The translational screws are fixedly mounted on the driving shaft of the screw reduction motor, and the screw reduction motor is fixedly mounted on the support plates on both sides. The translational screw is threadedly matched with the internal threaded hole opened on the roller plate, and the roller plate is driven to perform synchronous lifting and lowering movements through the rotation of the translational screw.

[0011] Preferably, several of the roller blocks are movably inserted in the hollow groove opened in the cross beam, and lifting slide bars are fixedly installed on both sides of the roller blocks. The lifting slide bars on both sides are movably inserted in the slide bar holes opened in the cross beam, and a return spring is also installed on one side of the lifting slide bar located above the cross beam. The return spring is used to make the several roller blocks be in the uppermost stroke position in the absence of external force.

[0012] Preferably, an inner retraction spring is provided on the movable sleeve on the lifting connecting rod in the roller block, one end of the inner retraction spring is fixedly connected to the lifting connecting rod, and the other end is fixedly connected in the roller block, and the inner retraction spring is used to push the lifting connecting rod and the Mohs hardness detection cutter head to move upward in the absence of external force, so that the Mohs hardness detection cutter head is retracted in the cutter head groove.

[0013] Preferably, the matching block is movably inserted into a limiting hole opened on the side of the rolling plate.

[0014] Preferably, the sealing assembly comprises an end cover, an annular fixing sleeve and an assembly sleeve, the annular fixing sleeve and the assembly sleeve are both provided with an assembly hole for inserting the aluminum roller, a sealing rubber ring is also provided in the assembly hole, the assembly sleeve is installed on a support plate on one side through a bearing, the end cover and the annular fixing sleeve are installed on the support plate on the other side through a bearing, the aluminum roller is movably inserted through one side of the annular fixing sleeve until the insertion end of the aluminum roller is embedded in the assembly hole of the assembly sleeve, after the aluminum roller is inserted, the plugging end of the end cover is inserted into the hollow tube of the aluminum roller, and finally the end cover is bolted to the side of the support plate, a sealing rubber ring is also provided on the outside of the plugging end of the end cover, a gear groove is provided on the outside of the annular fixing sleeve, the gear groove is meshed with a driving gear fixedly installed on the driving shaft of the rotating motor, thereby driving the aluminum roller to rotate through the rotation of the rotating motor, and the sealing connecting ring is movably connected at the axis center of the assembly sleeve.

[0015] An aluminum roller axial pressure test method, using the above-mentioned aluminum roller axial pressure test device, comprises the following steps:

[0016] Step 1: Cut the aluminum roller into a fixed length and assemble it through a sealing assembly so that its fixed axis is set under a plurality of roller blocks;

[0017] Step 2: Pushing a plurality of matching blocks to slide horizontally so that they can flexibly abut against the lifting connecting rod, so that the Mohs hardness detection cutter heads in a plurality of roller blocks protrude from the cutter head slots;

[0018] Step 3: Drive the roller pressure plate to move downward and push several roller pressure blocks downward until the Mohs hardness detection cutter head abuts against the surface of the aluminum roller. The aluminum roller is driven by the rotating motor to rotate and rotate the aluminum roller to rotate on a fixed axis. The aluminum roller stops after rotating one circle. Observe the scratch condition on the surface of the aluminum roller to determine the Mohs hardness range of the aluminum roller surface.

[0019] Step 4: Use an air pump to pump air into the aluminum roller to make its internal air pressure higher than the ambient air pressure. At this time, push the matching block to make it separate from the abutment with the lifting connecting rod, and use the roller pressure block to pressurize the surface of the aluminum roller in a decreasing manner to test the compressive strength of the aluminum roller;

[0020] Step 5: Perform a pressure test on the surface of the aluminum roller by setting a single roller pressure block in the middle of the aluminum roller to descend, and record the pressure value. When the air pressure sensor detects a decrease in air pressure at a certain moment, the pressure value data when the aluminum roller is pressurized and broken can be determined.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The present invention can not only detect the compressive strength of the roller surface, but also detect the Mohs hardness thereof. The compressive strength detection forms are diverse, which can meet the point and surface compressive detection of the roller. At the same time, by pressurizing the inside of the roller, the fracture time of the roller can be quickly determined. Compared with the human eye observation method, it is more accurate and efficient, and effectively enriches the diversified detection needs of the roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the aluminum roller assembly process of the present invention;

[0025] Figure 3 It is a schematic diagram of the disengagement state of the rolling block and the abutment state of the matching block of the present invention;

[0026] Figure 4 It is a schematic diagram of the abutment state of the rolling block and the matching block of the present invention;

[0027] Figure 5 It is a schematic diagram of the abutment state of the roller block and the lifting connecting rod and the matching block of the present invention;

[0028] Figure 6 It is a three-dimensional schematic diagram of the overall structure of the sealing assembly of the present invention;

[0029] Figure 7 It is a three-dimensional schematic diagram of the roller block and its connection structure of the present invention.

[0030] In the figure: 1 base, 2 support plate, 3 crossbeam, 4 roller block, 5 roller plate, 6 roller groove, 7 matching block, 8 aluminum roller, 9 sealing connecting ring, 10 air pump, 11 rotating motor, 12 lifting connecting rod, 13 Mohs hardness detection cutter head, 14 cutter head groove, 15 translation screw rod, 16 screw rod reduction motor, 17 lifting slide rod, 18 reset spring, 19 retraction spring, 20 limit hole, 21 end cover, 22 annular fixing sleeve, 23 assembly sleeve, 24 assembly hole, 25 plugging end. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] See also Figure 1-7 , the present invention provides a technical solution:

[0033] Embodiment 1:

[0034] An aluminum roller axial pressure test device comprises a base 1, support plates 2 are fixedly installed on both sides of the base 1, a crossbeam 3 is fixedly installed between the support plates 2 on both sides, a plurality of roller pressure blocks 4 are installed on the crossbeam 3 in a lifting manner, and roller pressure plates 5 are installed on the support plates 2 on both sides in a lifting manner, and roller pressure grooves 6 corresponding to the roller pressure blocks 4 are opened on the roller pressure plates 5, and matching blocks 7 are installed on the sides of the roller pressure grooves 6 in a sliding and translational manner, and the matching blocks 7 are abutted against or separated from the roller pressure blocks 4 by sliding and translational movement, when the matching blocks 7 abut against the roller pressure blocks 4, the roller pressure blocks 4 are synchronously lowered during the descending process of the roller pressure plates 5, and when the matching blocks 7 are separated from the abutment with the roller pressure blocks 4, the roller pressure blocks 4 remain stationary during the descending process of the roller pressure plates 5, and the roller pressure blocks 4 are arranged above the aluminum roller 8 at one end away from the roller pressure plates 5;

[0035] The aluminum roller 8 is movably assembled through the sealing assembly parts installed on the support plates 2 on both sides. A sealing connection ring 9 is also movably installed at the axis center of one side of the sealing assembly part. The sealing connection ring 9 is connected with the air pump 10 through a pipeline. The air pump 10 pumps gas into the aluminum roller 8 through the pipeline to form a high atmospheric pressure environment inside the aluminum roller 8. A rotating motor 11 is also fixedly installed on the support plate 2. The driving shaft of the rotating motor 11 is connected to the sealing assembly part on one side. The aluminum roller 8 is driven to rotate by the rotation of the rotating motor 11. The sealing assembly part is located inside the aluminum roller 8 and is also equipped with an air pressure sensor;

[0036] A lifting connecting rod 12 is installed in a lifting manner in a plurality of roller blocks 4. A Mohs hardness detection blade 13 is fixedly installed at one end of the lifting connecting rod 12 close to the aluminum roller 8. The Mohs hardness values ​​of the plurality of Mohs hardness detection blades 13 increase or decrease gradually from one side to the other side. The lifting connecting rod 12 protrudes from the roller block 4 on the side away from the Mohs hardness detection blade 13. The Mohs hardness detection blade 13 is retracted into the blade groove 14 at the bottom of the roller block 4 without the action of external force. When the lifting connecting rod 12 abuts against the matching block 7, the matching block 7 pushes the Mohs hardness detection blade 13 to protrude from the roller block 4. The protruding Mohs hardness detection blade 13 is abutted against the surface of the aluminum roller 8, and the rotating motor 11 is used to drive the aluminum roller 8 to perform a fixed-axis rotation motion, thereby performing Mohs hardness detection on the aluminum roller 8.

[0037] In this embodiment, the base 1 serves as a bearing structure for various parts, and the roller block 4 is movably inserted in the hollow groove opened in the cross beam 3, so that the roller block 4 can move up and down on the cross beam 3, and the roller block 4 is pressed against the surface of the aluminum roller 8 and continues to apply downward pressure, so as to perform a compressive strength test on the surface of the aluminum roller 8. The roller block 4 moves up and down under the push of the roller plate 5, and the roller plate 5 is provided with roller grooves 6 corresponding to the roller blocks 4 one by one. When several or a single roller block 4 needs to be lowered synchronously, it is only necessary to The corresponding matching block 7 is pushed to keep against the roller block 4 set below. In this way, the downward pressure of the roller block 4 can be controlled, so as to perform multiple compressive strength tests from point to surface. The pressure sensor is set at the bottom of the roller block 4 and the side against the aluminum roller 8. At the same time, in order to accurately determine the fracture time of the aluminum roller 8 in the compressive fracture strength test of the aluminum roller 8, the air pump 10 is used to supply air to the aluminum roller 8 to put it in a high-pressure environment. The aluminum roller 8 is assembled through a sealing assembly to ensure the internal airtightness, and An air pressure sensor is provided inside. When the internal air pressure decreases at a certain time point, it can be determined that the surface of the aluminum roller 8 is broken. At this time, combined with the value of the pressure sensor at the bottom of the roller pressure block 4, the compressive strength of the aluminum roller 8 when it is broken can be quickly obtained. In addition, since the precision roller shaft also has high requirements for its surface hardness, the presence of scratches on its surface also directly affects the quality of the produced products, it is also necessary to perform a Mohs hardness test on it. However, manual testing is usually used in the prior art. In this embodiment, by pushing the matching block 7 to make it abut against the lifting connecting rod 12, a number of Mohs hardness detection blades 13 can be made to protrude into the blade groove 14. At this time, the protruding Mohs hardness detection blade 13 is abutted against the surface of the aluminum roller 8, and the rotating motor 11 is used to drive the aluminum roller 8 to perform a fixed-axis rotation motion, thereby performing a Mohs hardness test on the aluminum roller 8. After the test is completed, the Mohs hardness of the surface of the aluminum roller 8 can be quickly determined by observing the scratches with the naked eye. In summary, the test structure in this embodiment has various detection forms, which effectively enriches the diversified detection needs of the roller shaft.

[0038] Embodiment 2:

[0039] The mechanism for driving the roller plate 5 to perform translation and lifting motion is a hydraulic telescopic cylinder or a translation screw 15 .

[0040] The mechanism for driving the roller plate 5 to perform translational and lifting movements is a translation screw 15. A pair of translation screws 15 are provided. The translation screw 15 is fixedly mounted on the driving shaft of a screw reduction motor 16. The screw reduction motor 16 is fixedly mounted on the support plates 2 on both sides. The translation screw 15 is threadedly matched with the internal threaded hole opened on the roller plate 5. The roller plate 5 is driven to perform synchronous lifting and lowering movements through the rotation of the translation screw 15.

[0041] In this embodiment, the screw reduction motor 16 drives the translation screw 15 to rotate and then drives the roller plate 5 to move up and down. This lifting method is stable and reliable and is widely used in real life.

[0042] Embodiment three:

[0043] A plurality of roller blocks 4 are movably inserted in the hollow groove opened in the cross beam 3, and lifting slide bars 17 are fixedly installed on both sides of the roller blocks 4. The lifting slide bars 17 on both sides are movably inserted in the slide bar holes opened in the cross beam 3. A reset spring 18 is also installed on one side of the lifting slide bar 17 located above the cross beam 3. The reset spring 18 is used to make the plurality of roller blocks 4 be in the uppermost stroke position in the absence of external force.

[0044] An inner spring 19 is provided on the movable sleeve of the lifting link 12 in the roller block 4. One end of the inner spring 19 is fixedly connected to the lifting link 12, and the other end is fixedly connected to the roller block 4. The inner spring 19 is used to push the lifting link 12 and the Mohs hardness detection cutter head 13 to move upward in the absence of external force, so that the Mohs hardness detection cutter head 13 is retracted in the cutter head groove 14.

[0045] In this embodiment, by providing the return spring 18 and the retraction spring 19, the roller block 4 and the lifting link 12 are pushed by the corresponding springs in the absence of external force and are thus in the set positions.

[0046] Embodiment 4:

[0047] The sealing assembly includes an end cover 21, an annular fixing sleeve 22 and an assembly sleeve 23. The annular fixing sleeve 22 and the assembly sleeve 23 are both provided with an assembly hole 24 for inserting the aluminum roller 8. A sealing rubber ring is also provided in the assembly hole 24. The assembly sleeve 23 is installed on the support plate 2 on one side through a bearing, and the end cover 21 and the annular fixing sleeve 22 are installed on the support plate 2 on the other side through a bearing. The aluminum roller 8 is movably inserted through one side of the annular fixing sleeve 22 until the insertion end of the aluminum roller 8 is embedded in the assembly sleeve 23. After the aluminum roller 8 is inserted into the assembly hole 24, the plugging end 25 of the end cover 21 is inserted into the hollow tube of the aluminum roller 8, and finally the end cover 21 is bolted to the side of the support plate 2. A sealing rubber ring is also provided on the outside of the plugging end 25 of the end cover 21. A gear groove is provided on the outside of the annular fixing sleeve 22. The gear groove is meshed with a driving gear fixedly installed on the driving shaft of the rotating motor 11, so that the aluminum roller 8 is driven to rotate by the rotation of the rotating motor 11. The sealing connecting ring 9 is movably connected to the axis center of the assembly sleeve 23.

[0048] In this embodiment, the specific structure of the sealing assembly and the installation method of the aluminum roller 8 are further disclosed. Through the above structure, the internal airtightness and connection stability of the aluminum roller 8 can be ensured during the installation process, thereby ensuring the normal progress of the compression test and the Mohs hardness test.

[0049] An aluminum roller axial pressure test method, using the above-mentioned aluminum roller axial pressure test device, comprises the following steps:

[0050] Step 1: Cut the aluminum roller 8 into a fixed length and assemble it through a sealing assembly so that its fixed axis is set under a plurality of roller blocks 4;

[0051] Step 2: Pushing a plurality of matching blocks 7 to slide in translation to make them movably abut against the lifting connecting rod 12, so that the Mohs hardness detection blades 13 in a plurality of roller blocks 4 protrude from the blade grooves 14;

[0052] Step 3: Drive the roller pressing plate 5 downward to push the roller pressing blocks 4 downward until the Mohs hardness detection cutter head 13 abuts against the surface of the aluminum roller 8, and the aluminum roller 8 is driven by the rotating motor 11 to rotate and rotate the aluminum roller 8 to perform a fixed-axis rotation movement. The aluminum roller 8 stops moving after rotating one circle, and the scratch condition on the surface of the aluminum roller 8 is observed to determine the Mohs hardness range of the surface of the aluminum roller 8;

[0053] Step 4: Pump air into the aluminum roller 8 through the air pump 10 to make the internal air pressure higher than the ambient air pressure. At this time, push the matching block 7 to make it separate from the abutment with the lifting link 12, and use the rolling block 4 to pressurize the surface of the aluminum roller 8 in a decreasing manner to test the compressive strength of the aluminum roller 8;

[0054] Step 5: Perform a pressure test on the surface of the aluminum roller 8 by setting the single roller pressure block 4 in the middle of the aluminum roller 8 to descend, and record the pressure value. When the air pressure sensor detects a decrease in air pressure at a certain moment, the pressure value data when the aluminum roller 8 is pressurized and fractured can be determined.

[0055] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An aluminum roller axial pressure test device, comprising a base, characterized in that: Support plates are fixedly installed on both sides of the base, and cross beams are also fixedly installed between the support plates on both sides. A number of roller blocks are installed on the cross beams in a lifting manner, and roller plates are also installed above the support plates on both sides in a lifting manner. Roller grooves corresponding to the roller blocks are opened on the roller plates, and matching blocks are installed on the sides of the roller grooves in a sliding and translational manner. The matching blocks can abut against or disengage from the roller blocks by sliding in a translational manner. When the matching blocks abut against the roller blocks, the roller blocks synchronously descend during the descending process of the roller plates. When the matching blocks disengage from the abutment with the roller blocks, the roller blocks remain stationary during the descending process of the roller plates, and the roller blocks are arranged above the aluminum roller at one end away from the roller plate. The aluminum roller is movably assembled through sealing assemblies installed on the support plates on both sides. A sealing connection ring is movably installed at the axis of one side of the sealing assembly. The sealing connection ring is connected to an air pump through a pipeline. The air pump pumps gas into the aluminum roller through the pipeline to form a high atmospheric pressure environment inside the aluminum roller. A rotating motor is also fixedly installed on the support plate. The driving shaft of the rotating motor is connected to the sealing assembly on one side. The aluminum roller is driven to rotate by the rotation of the rotating motor. The sealing assembly is located inside the aluminum roller and is also equipped with an air pressure sensor; Several roller blocks are provided with lifting connecting rods, and a Mohs hardness detection cutter head is fixedly installed on one end of the lifting connecting rod close to the aluminum roller. The Mohs hardness values ​​of several Mohs hardness detection cutter heads increase or decrease gradually from one side to the other side. The lifting connecting rod protrudes from the roller block on one side away from the Mohs hardness detection cutter head. The Mohs hardness detection cutter head is retracted into the cutter head groove at the bottom of the roller block without external force. When the lifting connecting rod abuts against the matching block, the matching block pushes the Mohs hardness detection cutter head to protrude from the roller block. The protruding Mohs hardness detection cutter head is abutted against the surface of the aluminum roller, and the aluminum roller is driven to rotate on a fixed axis by the rotating motor, thereby performing Mohs hardness detection on the aluminum roller.

2. The aluminum roller axial compression test device according to claim 1, characterized in that: The mechanism for driving the roller plate to perform translation and lifting motion is a hydraulic telescopic cylinder or a translation screw.

3. The aluminum roller axial compression test device according to claim 2, characterized in that: The mechanism for driving the roller plate to perform translational and lifting movements is a translation screw, and a pair of translation screws are provided. The translation screws are fixedly mounted on the driving shaft of the screw reducer motor, and the screw reducer motor is fixedly mounted on the support plates on both sides. The translation screw is threadedly matched with the internal threaded hole opened on the roller plate, and the roller plate is driven to perform synchronous lifting and lowering movements through the rotation of the translation screw.

4. The aluminum roller axial compression test device according to claim 1, characterized in that: Several of the roller blocks are movably inserted in the hollow groove opened in the cross beam, and lifting slide bars are fixedly installed on both sides of the roller blocks. The lifting slide bars on both sides are movably inserted in the slide bar holes opened in the cross beam. A return spring is also installed on one side of the lifting slide bar located above the cross beam. The return spring is used to make several roller blocks be in the uppermost stroke position in the absence of external force.

5. The aluminum roller axial compression test device according to claim 1, characterized in that: An inner retraction spring is provided on the movable sleeve on the lifting connecting rod in the roller block, one end of the inner retraction spring is fixedly connected to the lifting connecting rod, and the other end is fixedly connected in the roller block. The inner retraction spring is used to push the lifting connecting rod and the Mohs hardness detection cutter head to move upward without external force, so that the Mohs hardness detection cutter head is retracted in the cutter head groove.

6. The aluminum roller axial compression test device according to claim 1, characterized in that: The matching block is movably inserted into a limiting hole provided on the side of the rolling plate.

7. The aluminum roller axial compression test device according to claim 1, characterized in that: The sealing assembly comprises an end cover, an annular fixing sleeve and an assembly sleeve. The annular fixing sleeve and the assembly sleeve are both provided with an assembly hole for inserting the aluminum roller. A sealing rubber ring is also provided in the assembly hole. The assembly sleeve is installed on a support plate on one side through a bearing, and the end cover and the annular fixing sleeve are installed on the support plate on the other side through a bearing. The aluminum roller is movably inserted through one side of the annular fixing sleeve until the insertion end of the aluminum roller is embedded in the assembly hole of the assembly sleeve. After the aluminum roller is inserted, the plugging end of the end cover is inserted into the hollow tube of the aluminum roller, and finally the end cover is bolted to the side of the support plate. A sealing rubber ring is also provided on the outer side of the plugging end of the end cover. A gear groove is provided on the outer side of the annular fixing sleeve. The gear groove is meshed with a driving gear fixedly installed on the driving shaft of the rotating motor, thereby driving the aluminum roller to rotate through the rotation of the rotating motor. The sealing connecting ring is movably connected to the axis center of the assembly sleeve.

8. An aluminum roller axial pressure test method, using the aluminum roller axial pressure test device according to any one of claims 1 to 7, characterized in that: The following steps are involved: Step 1: Cut the aluminum roller into a fixed length and assemble it through a sealing assembly so that its fixed axis is set under a plurality of roller blocks; Step 2: Pushing a plurality of matching blocks to slide horizontally so that they can flexibly abut against the lifting connecting rod, so that the Mohs hardness detection cutter heads in a plurality of roller blocks protrude from the cutter head slots; Step 3: Drive the roller pressure plate to move downward and push several roller pressure blocks downward until the Mohs hardness detection cutter head abuts against the surface of the aluminum roller. The aluminum roller is driven by the rotating motor to rotate and rotate the aluminum roller to perform a fixed-axis rotation. The aluminum roller stops after rotating one circle. Observe the scratch condition on the surface of the aluminum roller to determine the Mohs hardness range of the aluminum roller surface. Step 4: Use an air pump to pump air into the aluminum roller to make its internal air pressure higher than the ambient air pressure. At this time, push the matching block to make it separate from the abutment with the lifting connecting rod, and use the roller pressure block to pressurize the surface of the aluminum roller in a decreasing manner to test the compressive strength of the aluminum roller; Step 5: Perform a pressure test on the surface of the aluminum roller by setting a single roller pressure block in the middle of the aluminum roller to descend, and record the pressure value. When the air pressure sensor detects a decrease in air pressure at a certain moment, the pressure value data when the aluminum roller is pressurized and broken can be determined.

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