A wear-resistant testing device for building materials used in construction engineering

Abstract

The present invention relates to the field of wear-resistant detection technology, and specifically to a wear-resistant detection device for building materials used in construction projects, which is used to detect the wear resistance of concrete blocks, and includes: a wear detection mechanism, wherein the wear detection mechanism includes a bearing block driven horizontally and reciprocatingly, and a driving motor is arranged inside the bearing block. As the concrete block wears, the top height of the concrete block decreases. In order to ensure the pressure of the grinding plate on the top of the concrete block, more hydraulic oil needs to be injected to keep the grinding plate in contact with the concrete block. The flow sensor built into the flow monitoring valve monitors the change in oil volume in real time, and the wear condition of the concrete block is fed back to obtain the wear resistance data of the concrete block. At the same time, as the grinding plate wears, the grinding shell will squeeze the ball and the moving rod when it descends, causing the conductive sheet to slide on the resistor plate, and the current changes accordingly, which can also feed back the wear resistance data of the concrete block.

Description

Technical Field

[0001] The invention relates to the technical field of wear-resistant detection, and in particular to a wear-resistant detection device for building materials used in construction engineering. Background Art

[0002] Building materials are used to form different functional parts of a building, such as structure, decoration, insulation and waterproofing. The selection of building materials directly affects the quality, durability, safety and aesthetics of the building. Building materials will face various friction and wear during use. For example, concrete floors will be subject to friction from people walking and objects moving. In order to pre-evaluate the wear resistance of materials under actual use conditions, wear resistance testing is usually required. For example, a wear resistance testing device for building materials used in construction projects disclosed in publication number CN117554225B is used to perform wear resistance testing on concrete blocks.

[0003] In addition, the existing wear-resistant testing equipment usually uses Los Angeles abrasion machines for testing. By placing the concrete sample in the abrasion machine, abrading it for a certain period of time, and measuring the mass change after wear. This method can only be used for testing after the experiment is over, and cannot monitor the wear condition in real time during the experiment. Therefore, if abnormal wear occurs during the abrasion process (such as excessive local wear), it will cause equipment damage or distortion of test results; and when abrading the concrete block, the grinding plate, as a component that directly contacts the concrete block, will gradually wear out during the abrasion process, and the existing equipment cannot monitor the wear of the grinding plate in real time. The wear of the grinding plate will change its surface characteristics (such as roughness, hardness, etc.), thereby affecting the results of the wear test. If the grinding plate is severely worn, the test results will deviate from the true value. Summary of the invention

[0004] In view of the above-mentioned shortcomings of the prior art, the present invention provides a wear-resistant detection device for building materials for construction projects, which can effectively solve the problem that the prior art cannot monitor the wear condition in real time during the wear process and cannot monitor the wear condition of the grinding plate in real time.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] The present invention provides a wear-resistant testing device for building materials used in construction engineering, which is used to test the wear resistance of concrete blocks and comprises:

[0007] A wear detection mechanism, the wear detection mechanism includes a bearing block driven horizontally and reciprocatingly, a driving motor is arranged inside the bearing block, a telescopic detection component is fixedly connected to the output end of the driving motor, a grinding shell is fixedly connected to the bottom end of the telescopic detection component, the telescopic detection component is used to drive the grinding shell to move downward and detect the grinding condition of the concrete block, an automatic replacement component is arranged inside the grinding shell, the grinding shell automatically replaces the grinding plate through the automatic replacement component, and the wear detection mechanism also includes a separate detection component;

[0008] The clamping mechanism comprises a plurality of clamping rods for clamping or releasing the concrete block.

[0009] Preferably, it also includes an operating table, the bottom end of which is fixedly connected to two symmetrical supporting legs, the top end of which is fixedly connected to a detection frame, the inner wall of the detection frame is fixedly connected to a supporting shell, and a transparent cabinet door is airtightly hinged at the opening of the detection frame.

[0010] Preferably, the wear detection mechanism also includes a reciprocating screw rotatably connected to the inner wall of the detection frame, and a bearing block is sleeved on the outer wall of the reciprocating screw, the inner wall of the detection frame is fixedly connected to two symmetrical sliding rods, and the bearing block is slidably sleeved on the outer wall of the sliding rod, and the outer wall of the detection frame is fixedly connected to a first motor for driving the reciprocating screw.

[0011] Preferably, the telescopic detection assembly also includes a driven cylindrical cylinder, the inner wall of the cylindrical cylinder is air-tightly slidably connected with a push column, the bottom end of the push column is fixedly connected to a polishing shell, the top of the polishing shell is fixedly connected to a two-way oil pump, the outer peripheral wall of the cylindrical cylinder is fixedly connected to a containing half ring, and hydraulic oil is contained in the containing half ring, the oil suction end of the two-way oil pump is fixedly connected to an oil suction pipe, the other end of the oil suction pipe is connected to the containing half ring, the oil discharge end of the two-way oil pump is fixedly connected to an oil discharge pipe, the other end of the oil discharge pipe is connected to the inner wall of the cylindrical cylinder, an electromagnetic one-way valve and a flow monitoring valve are arranged in the oil discharge pipe, a storage cavity is opened inside the polishing shell, and a piezoelectric ceramic sheet is arranged inside the storage cavity.

[0012] Preferably, the automatic replacement component includes two symmetrical sliding grooves opened on the inner wall of the grinding shell, the inner wall of the sliding groove is fixedly connected with an electromagnetic plate, the inner wall of the sliding groove is fixedly connected with two symmetrical plastic springs, the other end of the plastic spring is fixedly connected with a permanent magnet plate magnetically attracted to the electromagnetic plate, the top of the grinding plate has a partition groove consistent with the shape of the permanent magnet plate, the inner wall of the grinding shell near the bottom is embedded with an electromagnetic sheet, and the material of the grinding plate is modified by adding magnetic powder, and the electromagnetic sheet is magnetically attracted to the grinding plate.

[0013] Preferably, the separate detection component includes a fixed groove opened at the top of the supporting shell, the inner wall of the fixed groove is fixedly connected to a telescopic frame, the inner bottom wall of the telescopic frame is fixedly connected to a connecting spring, the top of the connecting spring is fixedly connected to a moving rod slidably connected to the inner wall of the telescopic frame, the side wall of the moving rod close to the top is fixedly connected to a conductive sheet, the top of the supporting shell is fixedly connected to a resistor plate in contact with the conductive sheet, the conductive sheet and the resistor plate are electrically connected to a PLC controller and form a first monitoring loop, the conductive sheet and the resistor plate constitute a sliding rheostat, during the sliding process of the conductive sheet on the resistor plate downward, the resistance of the sliding rheostat in the second monitoring loop gradually decreases, the PLC controller is electrically connected to a current monitor, the current monitor is used to detect the current passing through the sliding rheostat and the current generated by the piezoelectric ceramic sheet, the top of the moving rod is rollingly connected to a ball, and the ball is in rolling contact with the bottom end of the grinding shell, the electromagnetic plate and the electromagnetic sheet are electrically connected to the PLC controller and form a replacement loop.

[0014] Preferably, the clamping mechanism includes a second motor fixedly connected to the bottom end of the operating table, the output end of the second motor is fixedly connected to a connecting shaft, the outer wall of the connecting shaft is fixedly connected to a driving gear, the bottom ends of the plurality of clamping rods are fixedly connected to a rotatable clamping gear, the driving gear is meshed with the plurality of clamping gears, and a rotating shaft is fixedly inserted at the axis center of the clamping gear, and the rotating shaft is rotatably connected to the top end of the operating table, the top end of the clamping rod is provided with a flexible anti-slip sleeve, the top end of the support shell is provided with an arc-shaped through hole that conforms to the movement trajectory of the clamping rod, and the arc-shaped through hole is concentrically arranged with the clamping gear.

[0015] Preferably, an exhaust pump is fixedly connected to the outer wall of the detection frame, an exhaust hood is fixedly connected to the inner wall of the detection frame, the exhaust end of the exhaust pump is connected to the exhaust hood, the exhaust end of the exhaust pump is fixedly connected to an exhaust pipe, and the other end of the exhaust pipe is fixedly connected to a collecting box fixedly connected to the outer wall of the detection frame, and the PLC controller is electrically connected to the piezoelectric ceramic sheet and the flow monitoring valve to form a third monitoring circuit.

[0016] Compared with the known prior art, the technical solution provided by the present invention has the following beneficial effects:

[0017] As the concrete block wears, the top height of the concrete block decreases. In order to ensure the pressure of the grinding plate on the top of the concrete block, more hydraulic oil needs to be injected to keep the grinding plate in contact with the concrete block. The flow sensor built into the flow monitoring valve monitors the oil volume changes in real time, and the wear of the concrete block is fed back to obtain the wear resistance data of the concrete block. At the same time, as the grinding plate wears, the grinding shell will squeeze the ball and moving rod when it descends, causing the conductive sheet to slide on the resistor plate, and the current changes accordingly. The wear resistance data of the concrete block can also be fed back. Through hydraulic oil flow monitoring and current change monitoring, two sets of data can be obtained for comparative analysis to ensure the accuracy and reliability of the monitoring results.

[0018] When any two of the conclusions from the hydraulic oil flow monitoring, current change monitoring and current monitoring generated by the piezoelectric ceramic sheet indicate that the grinding plate needs to be replaced, the PLC controller controls the electromagnetic sheet to cut off the power, causing the grinding plate to fall automatically, and then energizes the electromagnetic sheet to cause the permanent magnet sheet to adsorb into the sliding groove, so that it will no longer block the grinding plate above, causing the grinding plate to fall automatically. When it is about to fall out of the grinding shell, an electromagnetic sheet has been energized in advance, so the grinding plate is adsorbed by the electromagnetic sheet to fix the grinding plate and adsorb the new grinding plate, completing the automatic replacement process. The grinding plate is replaced to ensure the accuracy of the wear test. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0021] Figure 2 It is a partial three-dimensional structural schematic diagram of the present invention;

[0022] Figure 3 The internal three-dimensional structure of the present invention is shown in FIG. Figure 1 ;

[0023] Figure 4 The internal three-dimensional structure of the present invention is shown in FIG. Figure 2 ;

[0024] Figure 5 It is a schematic diagram of the three-dimensional structure of the polished shell section of the present invention;

[0025] Figure 6 It is a schematic diagram of the three-dimensional structure of the cross section of the polished shell part of the present invention;

[0026] Figure 7 It is a schematic diagram of the exploded three-dimensional structure of the telescopic frame of the present invention;

[0027] Figure 8 For the present invention Figure 2 A schematic diagram of the enlarged structure of part A.

[0028] Figure numerals: 1, wear detection mechanism; 11, bearing block; 12, telescopic detection assembly; 121, cylindrical tube; 122, push column; 123, two-way oil pump; 124, holding half ring; 125, piezoelectric ceramic sheet; 126, oil pumping pipe; 127, oil discharge pipe; 128, electromagnetic one-way valve; 129, flow monitoring valve; 1210, storage chamber; 13, grinding shell; 14, grinding plate; 15, automatic replacement assembly; 151, sliding groove; 152, electromagnetic plate; 153, plastic spring; 154, permanent magnet plate; 155, partition groove; 156, electromagnetic sheet; 16 , separate detection component; 161, fixing groove; 162, telescopic frame; 163, connecting spring; 164, moving rod; 165, conductive sheet; 166, resistor plate; 167, ball bearing; 17, reciprocating screw; 18, sliding rod; 19, first motor; 2, clamping mechanism; 21, clamping rod; 22, clamping gear; 23, second motor; 24, connecting shaft; 25, driving gear; 26, rotating shaft; 27, arc-shaped through hole; 3, exhaust pump; 4, exhaust hood; 5, exhaust duct; 6, collection box; 7, operating table; 8, supporting leg; 9, detection frame; 10, supporting shell. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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.

[0030] The present invention will be further described below in conjunction with the embodiments.

[0031] Example: Refer to Figures 1 to 8 , a building material wear resistance testing device for construction engineering, the device is used to detect the wear resistance of concrete blocks, including:

[0032] The wear of concrete blocks can be monitored in a variety of ways through the following structures, see Figure 1 , Figures 4 to 7The wear detection mechanism 1 includes a bearing block 11 driven horizontally and reciprocatingly, a driving motor is arranged inside the bearing block 11, a telescopic detection component 12 is fixedly connected to the output end of the driving motor, a grinding shell 13 is fixedly connected to the bottom end of the telescopic detection component 12, the telescopic detection component 12 is used to drive the grinding shell 13 to move downward and detect the grinding condition of the concrete block, an automatic replacement component 15 is arranged inside the grinding shell 13, and the grinding shell 13 automatically replaces the grinding plate 14 through the automatic replacement component 15, and the wear detection mechanism 1 also includes a separate detection component 16;

[0033] Two different grinding methods are provided through the following specific structure, refer to Figure 4 The wear detection mechanism 1 also includes a reciprocating screw 17 rotatably connected to the inner wall of the detection frame 9, and the bearing block 11 is sleeved on the outer wall of the reciprocating screw 17. The inner wall of the detection frame 9 is fixedly connected to two symmetrical sliding rods 18, and the bearing block 11 is slidably sleeved on the outer wall of the sliding rod 18. The outer wall of the detection frame 9 is fixedly connected to a first motor 19 for driving the reciprocating screw 17.

[0034] The wear of the concrete block can be fed back by detecting the amount of hydraulic oil through the following specific structure. Figure 4 The telescopic detection assembly 12 also includes a driven cylindrical cylinder 121, the inner wall of the cylindrical cylinder 121 is airtightly slidably connected with a push column 122, the bottom end of the push column 122 is fixedly connected to the polishing shell 13, the top of the polishing shell 13 is fixedly connected with a two-way oil pump 123, the outer peripheral wall of the cylindrical cylinder 121 is fixedly connected with a containing half ring 124, and the containing half ring 124 contains hydraulic oil, the oil pumping end of the two-way oil pump 123 is fixedly connected with an oil pumping pipe 126, and the other end of the oil pumping pipe 126 is fixedly connected to the oil pumping end of the two-way oil pump 123. The two-way oil pump 123 is connected to the containing half ring 124, and the oil discharge end is fixedly connected to an oil discharge pipe 127. The other end of the oil discharge pipe 127 is connected to the inner wall of the cylindrical tube 121. An electromagnetic one-way valve 128 and a flow monitoring valve 129 are arranged in the oil discharge pipe 127. A storage cavity 1210 is opened inside the polishing shell 13. A piezoelectric ceramic piece 125 is arranged inside the storage cavity 1210. The flow monitoring valve 129 has a built-in flow sensor, which can monitor the fluid flow passing through the valve in real time.

[0035] When the electromagnetic coil inside the electromagnetic one-way valve 128 is not energized, this valve can only allow fluid liquid or gas to pass through in one direction, similar to the function of a mechanical one-way valve, and reverse flow is blocked at this time; when the electromagnetic coil is energized, this valve opens a bypass or changes the internal structure so that the fluid can flow freely in two directions. Therefore, after the detection is completed, the hydraulic oil in the cylindrical barrel 121 can be re-pumped into the containing half ring 124 by reverse driving the two-way oil pump 123 for subsequent use.

[0036] The grinding plate 14 can be automatically replaced by the following specific structure, referring to Figures 5 and 6 The automatic replacement component 15 includes two symmetrical sliding grooves 151 opened on the inner wall of the grinding shell 13, and the inner wall of the sliding groove 151 is fixedly connected with an electromagnetic plate 152, and the inner wall of the sliding groove 151 is fixedly connected with two symmetrical plastic springs 153, and the other end of the plastic spring 153 is fixedly connected with a permanent magnet plate 154 that is magnetically attracted to the electromagnetic plate 152. The top of the grinding plate 14 has a partition groove 155 that is consistent with the shape of the permanent magnet plate 154, and the inner wall of the grinding shell 13 near the bottom is embedded with an electromagnetic sheet 156, and the manufacturing material of the grinding plate 14 is modified and magnetic powder is added, and the electromagnetic sheet 156 is magnetically attracted to the grinding plate 14.

[0037] The wear of concrete blocks is tested individually by the following specific structure, refer to Figure 7 The separate detection component 16 includes a fixed groove 161 opened at the top of the support shell 10, the inner wall of the fixed groove 161 is fixedly connected with a telescopic frame 162, the inner bottom wall of the telescopic frame 162 is fixedly connected with a connecting spring 163, the top of the connecting spring 163 is fixedly connected with a moving rod 164 that is slidably connected to the inner wall of the telescopic frame 162, the side wall of the moving rod 164 near the top is fixedly connected with a conductive sheet 165, the top of the support shell 10 is fixedly connected with a resistor plate 166 that contacts the conductive sheet 165, the conductive sheet 165 and the resistor plate 166 are electrically connected to the PLC controller and form a first monitoring Loop, the conductive sheet 165 and the resistor plate 166 form a sliding rheostat, when the conductive sheet 165 slides downward on the resistor plate 166, the resistance of the sliding rheostat in the second monitoring loop gradually decreases, the PLC controller electrical signal is connected to the current monitor, the current monitor is used to detect the current passing through the sliding rheostat and the current generated by the piezoelectric ceramic sheet 125, the top end of the moving rod 164 is rollingly connected to the ball 167, and the ball 167 is in rolling contact with the bottom end of the grinding shell 13, the electromagnetic plate 152 and the electromagnetic sheet 156 are connected to the PLC controller electrical signal to form a replacement loop.

[0038] The concrete block is clamped by the following specific structure, refer to Figure 2 , Figure 3 , Figure 8 , the clamping mechanism 2 includes a plurality of clamping rods 21 for clamping or releasing the concrete block.

[0039] The clamping mechanism 2 includes a second motor 23 fixedly connected to the bottom end of the operating table 7, the output end of the second motor 23 is fixedly connected to a connecting shaft 24, the outer wall of the connecting shaft 24 is fixedly connected to a driving gear 25, the bottom ends of multiple clamping rods 21 are fixedly connected to a rotatable clamping gear 22, the driving gear 25 is meshed with multiple clamping gears 22, and a rotating shaft 26 is fixedly inserted at the axis of the clamping gear 22, and the rotating shaft 26 is rotatably connected to the top of the operating table 7, the top end of the clamping rod 21 is sleeved with a flexible anti-slip sleeve, the top end of the supporting shell 10 is provided with an arcuate through hole 27 that conforms to the movement trajectory of the clamping rod 21, and the arcuate through hole 27 is concentrically arranged with the clamping gear 22, wherein there are at least three clamping gears 22 and clamping rods 21, and when the clamping is a cube, the clamping gear 22 and the clamping rod 21 can be replaced with 4 to clamp and fix the concrete block to prevent the concrete block from moving.

[0040] It also includes an operating table 7, the bottom end of which is fixedly connected to two symmetrical supporting legs 8, the top end of which is fixedly connected to a detection frame 9, the inner wall of the detection frame 9 is fixedly connected to a supporting shell 10, and a transparent cabinet door is airtightly hinged at the opening of the detection frame 9.

[0041] The dust is extracted through the following specific structure, refer to Figure 2 The outer wall of the detection frame 9 is fixedly connected to an exhaust pump 3, the inner wall of the detection frame 9 is fixedly connected to an exhaust hood 4, the exhaust end of the exhaust pump 3 is connected to the exhaust hood 4, the exhaust end of the exhaust pump 3 is fixedly connected to an exhaust pipe 5, and the other end of the exhaust pipe 5 is fixedly connected to a collecting box 6 fixedly connected to the outer wall of the detection frame 9, the PLC controller electrical signal is connected to the piezoelectric ceramic piece 125 and the flow monitoring valve 129 to form a third monitoring loop.

[0042] This solution has two grinding methods. The specific processes of the two grinding methods are as follows:

[0043] 1. Start the first motor to drive the reciprocating screw rod 17 to rotate, and then limit the bearing block 11 through the slide rod 18, so that the bearing block 11 moves back and forth on the slide rod 18, thereby driving the cylindrical tube 121, the push column 122, and the grinding shell 13 to move synchronously, so that the grinding plate 14 reciprocates and wears the concrete block left and right;

[0044] 2. Keep the bearing block 11 at the center of the reciprocating screw 17, then start the drive motor, and drive the cylindrical tube 121, the push column 122, and the grinding shell 13 to rotate synchronously through the drive motor, so that the grinding plate 14 rotates and wears the concrete block.

[0045] First, place the concrete block on the top of the supporting shell 10, and then start the second motor 23, and rotate the second driving connecting shaft 24 and the driving gear 25. Since the driving gear 25 is engaged with the multiple clamping gears 22, the multiple clamping gears 22 are driven by the driving gear 25 to rotate synchronously clockwise or counterclockwise at the same time, thereby driving the clamping rod 21 to rotate synchronously, so that the clamping rod 21 moves in the arc through hole 27, and then clamps the concrete block.

[0046] According to the actual situation, any one of the two abrasion methods is selected to abrade the concrete block. Before that, the two-way oil pump 123 needs to be started, and the hydraulic oil in the containing half ring 124 is extracted through the oil pumping pipe 126, and then discharged into the space between the cylindrical barrel 121 and the push column 122 through the oil discharge pipe 127, so that the push column 122 pushes the grinding shell 13 to move downward until the grinding plate 14 contacts the top of the concrete block. When the hydraulic oil enters the cylindrical barrel 121, the amount of hydraulic oil injected into the cylindrical barrel 121 is detected through the flow monitoring valve 129 (this amount of oil is used as the initial amount of oil), and then the transparent cabinet door is closed for abrasion;

[0047] At the same time, the exhaust pump 3 is started to extract the dust generated by abrasion, and then discharged into the collection box 6 through the exhaust pipe 5.

[0048] As the concrete block is gradually worn away, the top of the concrete block will gradually drop. Therefore, the two-way oil pump 123 will continuously inject hydraulic oil into the space between the cylindrical barrel 121 and the push column 122, so that the push column 122 drives the grinding shell 13 to move downward, keep the grinding plate 14 in contact with the concrete block, and maintain the grinding pressure. When the amount of oil provided between the cylindrical barrel 121 and the push column 122 is significantly reduced within a period of time, it may be that the bottom of the grinding plate 14 does not have the ability to continue grinding. Therefore, the grinding plate 14 needs to be replaced, and the amount of oil injected into the cylindrical barrel 121 and the push column 122 is monitored in real time through the flow monitoring valve 129, so that the wear of the concrete block can be fed back.

[0049] When the grinding shell 13 descends, the ball 167 and the moving rod 164 are squeezed downward, and the conductive sheet 165 is driven by the moving rod 164 to move downward synchronously on the resistor plate 166, and then the current through the sliding rheostat is monitored in real time through the current monitor. When it is monitored that the change of the current through the sliding rheostat slows down within a period of time, it may be that the bottom of the grinding plate 14 does not have the ability to continue grinding, and the current monitor monitors the change of the current through the sliding rheostat in real time, and the wear of the concrete block can be fed back;

[0050] Through the above two monitoring methods, the wear of concrete blocks can be monitored in real time, and two sets of data can be used for comparative analysis;

[0051] At the same time, the current generated by the piezoelectric ceramic sheet 125 is monitored by the current monitor. When the grinding plate 14 is initially ground, it is relatively rough, so strong vibrations will be generated during grinding, so the current generated by the piezoelectric ceramic sheet 125 will be relatively large. As the grinding plate 14 is ground, the bottom of the grinding plate 14 will gradually become smooth, so the vibrations generated will decrease and the current generated will become smaller. When the current monitor detects that the current generated by the piezoelectric ceramic sheet 125 becomes smaller, it may be that the bottom of the grinding plate 14 does not have the grinding ability. Then, a comprehensive comparison is made based on the above two test data. If there are two test results that both indicate that the bottom of the grinding plate 14 does not have the grinding ability, the grinding plate 14 needs to be replaced. The specific replacement method is as follows:

[0052] First, the PLC controller is used to control the electromagnetic plate and the wear mechanism to be powered off, so that the grinding plate 14 is no longer adsorbed, and then the grinding plate 14 is automatically dropped, the transparent cabinet door is opened to take it out, and then the transparent cabinet door is closed, and then the electromagnetic plate 152 and the electromagnetic plate are powered on by the PLC controller, so that the permanent magnet plate 154 is adsorbed into the sliding groove 151, so that the upper grinding plate 14 is no longer blocked, and the grinding plate 14 is automatically dropped. When it is about to fall out of the grinding shell 13, since the electromagnetic plate has been energized in advance, the grinding plate 14 can be adsorbed by the electromagnetic plate to fix the grinding plate 14, and then the electromagnetic plate 152 is powered off, and the permanent magnet plate 154 is ejected into the partition groove 155 on the bottom grinding plate 14 by the plastic spring 153, and the upper grinding plate 14 continues to be blocked.

[0053] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A construction material wear resistance testing device for construction engineering, which is used to test the wear resistance of concrete blocks, characterized in that: include: A wear detection mechanism (1), the wear detection mechanism (1) comprising a bearing block (11) driven horizontally and reciprocatingly, the bearing block (11) being provided with a driving motor inside, the output end of the driving motor being fixedly connected to a telescopic detection component (12), the bottom end of the telescopic detection component (12) being fixedly connected to a grinding shell (13), the telescopic detection component (12) being used to drive the grinding shell (13) to move downward and detect the grinding condition of the concrete block, the grinding shell (13) being provided with an automatic replacement component (15), the grinding shell (13) automatically replacing a grinding plate (14) through the automatic replacement component (15), the wear detection mechanism (1) further comprising a separate detection component (16); A clamping mechanism (2), the clamping mechanism (2) comprising a plurality of clamping rods (21) for clamping or releasing a concrete block; It also comprises an operating table (7), the bottom end of the operating table (7) being fixedly connected to two symmetrical supporting legs (8), the top end of the operating table (7) being fixedly connected to a detection frame (9), the inner wall of the detection frame (9) being fixedly connected to a supporting shell (10), and a transparent cabinet door being airtightly hinged at the opening of the detection frame (9); The telescopic detection assembly (12) further comprises a driven cylindrical barrel (121), the inner wall of the cylindrical barrel (121) being airtightly slidably connected to a push column (122), the bottom end of the push column (122) being fixedly connected to a grinding shell (13), the top end of the grinding shell (13) being fixedly connected to a bidirectional oil pump (123), the outer peripheral wall of the cylindrical barrel (121) being fixedly connected to a containing half ring (124), and the containing half ring (124) containing hydraulic oil, the oil pumping end of the bidirectional oil pump (123) being fixedly connected to an oil pumping pipe ( 126), the other end of the oil extraction pipe (126) is connected to the containing half ring (124), the oil discharge end of the bidirectional oil extraction pump (123) is fixedly connected to an oil discharge pipe (127), the other end of the oil discharge pipe (127) is connected to the inner wall of the cylindrical tube (121), an electromagnetic one-way valve (128) and a flow monitoring valve (129) are arranged in the oil discharge pipe (127), a storage chamber (1210) is provided inside the polishing shell (13), and a piezoelectric ceramic piece (125) is arranged inside the storage chamber (1210); The separate detection component (16) comprises a fixing groove (161) opened at the top of the support shell (10); the inner wall of the fixing groove (161) is fixedly connected to a telescopic frame (162); the inner bottom wall of the telescopic frame (162) is fixedly connected to a connecting spring (163); the top of the connecting spring (163) is fixedly connected to a moving rod (164) slidably connected to the inner wall of the telescopic frame (162); the side wall of the moving rod (164) close to the top is fixedly connected to a conductive sheet (165); the top of the support shell (10) is fixedly connected to a resistor plate (166) in contact with the conductive sheet (165); the conductive sheet (165), the resistor plate (166) and the resistor plate (166) are connected to the conductive sheet (165); The resistance plate (166) is electrically connected to a PLC controller and forms a first monitoring loop; the conductive sheet (165) and the resistance plate (166) form a sliding rheostat; during the downward sliding of the conductive sheet (165) on the resistance plate (166), the resistance of the sliding rheostat in the second monitoring loop gradually decreases; the PLC controller is electrically connected to a current monitor, and the current monitor is used to detect the current passing through the sliding rheostat and the current generated by the piezoelectric ceramic sheet (125); the top end of the moving rod (164) is rollingly connected to a ball (167), and the ball (167) is in rolling contact with the bottom end of the grinding shell (13).

2. The wear-resistant testing equipment for building materials used in construction engineering according to claim 1 is characterized in that: The wear detection mechanism (1) further comprises a reciprocating screw (17) rotatably connected to the inner wall of the detection frame (9), and a bearing block (11) is sleeved on the outer wall of the reciprocating screw (17); the inner wall of the detection frame (9) is fixedly connected to two symmetrical sliding rods (18), and the bearing block (11) is slidably sleeved on the outer wall of the sliding rod (18); and the outer wall of the detection frame (9) is fixedly connected to a first motor (19) for driving the reciprocating screw (17).

3. The wear-resistant testing equipment for building materials used in construction engineering according to claim 1 is characterized in that: The automatic replacement component (15) comprises two symmetrical sliding grooves (151) opened on the inner wall of the grinding shell (13); the inner wall of the sliding groove (151) is fixedly connected to an electromagnetic plate (152); the inner wall of the sliding groove (151) is fixedly connected to two symmetrical plastic springs (153); the other end of the plastic spring (153) is fixedly connected to a permanent magnetic plate (154) magnetically attracted to the electromagnetic plate (152); the top of the grinding plate (14) has a partition groove (155) of the same shape as the permanent magnetic plate (154); the inner wall of the grinding shell (13) near the bottom end is embedded with an electromagnetic sheet (156); the manufacturing material of the grinding plate (14) is modified and magnetic powder is added; the electromagnetic sheet (156) and the grinding plate (14) are magnetically attracted; the electromagnetic plate (152) and the electromagnetic sheet (156) are connected to the PLC controller by electrical signals to form a replacement circuit.

4. The wear-resistant testing equipment for building materials used in construction engineering according to claim 1, characterized in that: The clamping mechanism (2) comprises a second motor (23) fixedly connected to the bottom end of the operating table (7), the output end of the second motor (23) is fixedly connected to a connecting shaft (24), the outer wall of the connecting shaft (24) is fixedly connected to a driving gear (25), the bottom ends of the plurality of clamping rods (21) are fixedly connected to rotatably arranged clamping gears (22), the driving gears (25) are meshed with the plurality of clamping gears (22), and a rotating shaft (26) is fixedly inserted at the axis of the clamping gears (22), and the rotating shaft (26) is rotatably connected to the top end of the operating table (7), the top end of the clamping rod (21) is sleeved with a flexible anti-slip sleeve, and the top end of the support shell (10) is provided with an arc-shaped through hole (27) that conforms to the movement trajectory of the clamping rod (21), and the arc-shaped through hole (27) is concentrically arranged with the clamping gear (22).

5. The wear-resistant testing equipment for building materials used in construction engineering according to claim 1, characterized in that: The outer wall of the detection frame (9) is fixedly connected to an exhaust pump (3), the inner wall of the detection frame (9) is fixedly connected to an exhaust hood (4), the exhaust end of the exhaust pump (3) is connected to the exhaust hood (4), the exhaust end of the exhaust pump (3) is fixedly connected to an exhaust pipe (5), and the other end of the exhaust pipe (5) is fixedly connected to a collection box (6) fixedly connected to the outer wall of the detection frame (9), and the PLC controller is electrically connected to the piezoelectric ceramic sheet (125) and the flow monitoring valve (129) to form a third monitoring loop.

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