Device for detecting bending resistance of machine-made sand concrete

Abstract

The invention relates to the field of new material performance detection by applying stable pressure. The machine-made sand concrete bending resistance detection device comprises a size measurement assembly used for measuring the length, the width and the height of a test strip, and a bending resistance detection assembly used for carrying out bending resistance detection on the test strip, which are arranged from front to back; the anti-bending detection assembly comprises a stress part which can move back and forth and is used for placing a test strip and a force application part which can be lifted and is used for applying stable pressure to the test strip; the bending resistance detection assembly is provided with a cleaning assembly used for cleaning fragments on a stress piece and a dust removal assembly used for adsorbing fragments generated after a test strip is damaged. An existing machine-made sand concrete bending resistance detection device has the problems of being low in detection efficiency and poor in detection precision. The machine-made sand concrete bending resistance detection device provided by the invention is relatively high in detection efficiency and relatively good in detection precision.

Description

Technical Field

[0001] This invention relates to the field of testing the performance of new materials by applying stable pressure, and specifically to a device for testing the flexural strength of manufactured sand concrete. Background Technology

[0002] Ultra-high performance concrete (UHPC) is a new type of cement-based material with extremely high durability and superior mechanical properties, and it is widely used in bridge structures. To further improve the compressive strength of UHPC, manufactured sand UHPC (hereinafter referred to as manufactured sand concrete) can be obtained by using 32% quartz sand and 68% manufactured sand as aggregate.

[0003] After the new material, manufactured sand concrete, is produced, its performance needs to be tested through random sampling. This includes tests such as compressive strength test, flexural strength test (also known as flexural strength test), and water absorption test.

[0004] The existing method for testing flexural strength involves manually inspecting the size and shape of the test strip, installing it on the testing device, and continuously and uniformly applying a load according to the strip's dimensions until the reference load is reached. The state of the strip is then observed, and the load is continued until the strip fails, recording the failure load and the location of the fracture at the lower edge. Clearly, after each test, the testing device retains a large number of fragments left from the broken strip, as well as numerous small, dust-like particles. To avoid affecting subsequent tests, these fragments and debris must be manually cleaned, during which time the testing device cannot be used, significantly reducing its efficiency. Furthermore, the existing testing device requires manual inspection of the strip's dimensions, which introduces significant uncertainty, affecting the loading and ultimately impacting testing accuracy and efficiency.

[0005] Therefore, existing testing devices for the flexural strength of manufactured sand concrete suffer from low testing efficiency and poor testing accuracy. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a device for testing the flexural strength of manufactured sand concrete with high testing efficiency and good testing accuracy.

[0007] To solve the above-mentioned technical problems, the present invention provides a device for testing the flexural strength of manufactured sand concrete, comprising, from front to back, a dimension measuring component for measuring the length, width, and height of a test strip, and a flexural strength testing component for testing the flexural strength of the test strip; the flexural strength testing component includes a force-bearing component that can move back and forth for placing the test strip and a force-applying component that can rise and fall to apply stable pressure to the test strip; the flexural strength testing component is provided with a cleaning component for cleaning debris on the force-bearing component and a dust removal component for adsorbing debris generated after the test strip is damaged.

[0008] As a further improvement of the present invention: a strip moving component is provided in front of the dimension measuring component, which is capable of moving the test strip on the dimension measuring component to the test strip moving component on the bending resistance detection component.

[0009] Preferably, the test strip moving assembly includes a vacuum suction cup for adsorbing the test strip that can be raised and lowered and can move back and forth. The vacuum suction cup is fixedly installed on a first slider that can move back and forth. The first slider is slidably installed at the bottom of a horizontal slide groove. The horizontal slide groove is slidably installed on a vertical slide rail that allows the horizontal slide groove to slide up and down. The top of the vertical slide rail is provided with a vertical first telescopic member for driving the horizontal slide groove to slide up and down.

[0010] As a further improvement of the present invention: the size measuring component includes a support base, a base is provided on the top of the support base, and a circular plate that can be raised and lowered is provided outside the base; ear plates are symmetrically provided on the left and right sides of the circular plate, and a first fixing member for clamping and fixing the test strip is rotatably installed on the two ear plates, which can rotate around the left and right direction; a small slide table that can slide left and right is provided on the top of the small slide table, and a small slide block that can slide back and forth on the top of the small slide table is provided. A mounting groove that can rotate around the back and forth direction is rotatably installed on the side of the small slide block near the first fixing member. Two first clamping plates that can move synchronously towards or away from each other along the length of the mounting groove are provided in the mounting groove. An infrared ranging sensor for measuring the distance between the two first clamping plates is fixedly installed on one of the first clamping plates.

[0011] Preferably, the first fixing member includes mounting blocks that are rotatably mounted on the two ear plates and can rotate around the left and right directions; a horizontal third telescopic member is fixedly mounted on the side of the two mounting blocks that are close to each other, and a first clamping block is mounted on the top of the telescopic end of the third telescopic member; a second clamping plate that can move synchronously towards or away from each other in the up and down direction is provided on the side of the first clamping block that is close to each other.

[0012] As a further improvement of the present invention: the bending resistance testing component includes an inverted U-shaped frame and a back plate fixedly installed on the rear side of the inverted U-shaped frame; a camera for acquiring images of the test strip in the bending resistance testing component is installed on the back plate; the force application component includes two parallel force rollers that can be raised and lowered to apply stable pressure to the test strip, both force rollers are fixedly installed at the bottom of the pressure plate, the pressure plate is fixedly installed at the bottom of a strain gauge pressure sensor for measuring the load applied to the test strip, the top of the strain gauge pressure sensor is connected to the top end of the telescopic end of a vertical sixth telescopic member, the sixth telescopic member is fixedly installed at the bottom of the top plate of the inverted U-shaped frame; the force receiving component includes two parallel force receiving rollers for placing the test strip, the two force receiving rollers are fixedly installed at the top of the large slide table, a large slide rail for sliding back and forth between the two vertical ends of the inverted U-shaped frame is installed, a seventh telescopic member for driving the large slide table to slide back and forth is provided on the front side of the large slide rail, and a second fixing member for limiting the displacement of the test strip in the front-back and left-right directions is provided on the large slide table.

[0013] Preferably, the second fixing member includes two second clamping blocks that can move in opposite directions in the left and right directions to limit the displacement of the test strip in the left and right directions. The large slide table is provided with two eighth telescopic members that are respectively used to drive the two second clamping blocks to slide in the left and right directions. The large slide table is provided with a support block, and the support block is provided with two third clamping plates that can move synchronously in opposite directions in the front and back directions to limit the displacement of the test strip in the front and back directions.

[0014] Preferably, a camera protector is installed on the back panel to protect the camera.

[0015] Preferably, the cleaning assembly includes a liftable front plate slidably mounted on the front side of the inverted U-shaped frame. A third slider capable of sliding up and down is slidably mounted on the front of the front plate. A straight plate capable of rotating in the left and right direction is rotatably mounted on the front of the third slider. An H-shaped plate is vertically mounted on the end of the straight plate away from the third slider. A connecting plate is mounted on the side of the H-shaped plate away from the front plate. A force roller cleaning component capable of cleaning two force rollers is mounted on the connecting plate. A push plate for cleaning debris on the support block is mounted on the end of the H-shaped plate away from the straight plate and capable of reciprocating along a direction parallel to the H-shaped plate.

[0016] As a further improvement of the present invention: the dust removal assembly includes a horizontal rotating shaft that can rotate in the left-right direction, a multi-port suction head mounting bracket is fixedly installed on the rotating shaft, a multi-port suction head that can slide back and forth in a direction perpendicular to the central axis of the rotating shaft is slidably installed in the multi-port suction head mounting bracket, a tenth telescopic member for driving the multi-port suction head to slide back and forth in a direction perpendicular to the central axis of the rotating shaft is fixedly installed on the multi-port suction head mounting bracket, and the multi-port suction head is connected to the vacuum cleaner host through a second flexible hose.

[0017] The beneficial effects of this invention are as follows: The flexural strength testing device for manufactured sand concrete provided by this invention has high testing efficiency and good testing accuracy. The device has a dimensional measuring component for measuring the length, width, and height of the test strips, thus eliminating the need for manual measurement of each test strip, improving both measurement efficiency and accuracy, resulting in more precise calculated loads. During testing, pressure is applied to the test strips through a force-applying component. Simultaneously, the device has a cleaning component for cleaning fragments from the force-applying component and a dust removal component for adsorbing debris generated after the test strips are broken. Therefore, after the test specimen breaks, the cleaning component can clean the fragments from the device, and the dust removal component can adsorb the debris. This eliminates the need for manual cleaning, and while the device is being cleaned, the dimensional measuring component can measure the dimensions of the next test strip, reducing the device's downtime. Therefore, this device has high testing efficiency and good testing accuracy. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a top view of the present invention; Figure 3 This is a partial structural schematic diagram of the bending resistance detection component in this invention; Figure 4 This is an assembly diagram of the annular plate, the first clamping block, the second clamping plate, etc. in this invention; Figure 5 This is an exploded view of the support base, base, mounting groove, etc. in this invention; Figure 6 This is an assembly drawing of the base, mounting groove, etc. in this invention; Figure 7 This is an assembly drawing of the inverted U-shaped frame, back plate, large slide rail, etc. in this invention; Figure 8 This is a partial cross-sectional schematic diagram of the inverted U-shaped frame, back plate, large slide rail, etc. in this invention; Figure 9 This is a schematic diagram of the overall structure of the bending resistance detection component in this invention; Figure 10 This is an exploded view of the second clamping block, the large slide, etc. in this invention; Figure 11 This is a perspective view of the overall structure of the large sliding table in this invention; Figure 12 This is a schematic diagram showing the positional relationship of the dust removal components, camera protection components, etc. in this invention; Figure 13 This is a schematic diagram of the overall structure of the inverted U-shaped frame, back panel, and vacuum cleaner unit in this invention; Figure 14 This is a schematic diagram of the overall structure of the cleaning component in this invention; Figure 15 This is an assembly diagram of the straight plate, H-shaped plate, and connecting plate in this invention; Figure 16 This is an assembly drawing of the straight plate, H-shaped plate, connecting plate, push plate, etc. in this invention; Figure 17 This is a partial structural diagram of the cleaning component in this invention; Figure 18 This is a schematic diagram showing the positional relationship of the dust removal components, etc., in this invention; Figure 19 This is a partial structural schematic diagram of the test strip moving component of the present invention; Figure 20 This is a schematic diagram showing the positional relationship of the camera protection components, etc., in this invention.

[0019] The names of the components corresponding to the markings in the above figures are as follows: 1. Dimension measuring assembly; 1011. Support base; 1012. Base; 1013. Circular ring plate; 10131. Ear plate; 1021. Small slide table; 1022. Small slide block; 1023. Mounting slot; 1024. First clamping plate; 1025. Fourth telescopic component; 1031. Mounting block; 1032. Third telescopic component; 1033. First clamping block; 1034. Second clamping plate; 1035. Second forward and reverse toothed ball screw; 104. Fifth telescopic component; 105. Sixth motor; 2. Bending resistance testing components; 2011. Inverted U-shaped frame; 2012. Back plate; 2021. Force roller; 2022. Pressure plate; 2023. Sixth telescopic component; 2031. Force-receiving roller; 2032. Large slide table; 2033. Large slide rail; 2034. Second clamping block; 2035. Eighth telescopic component; 2036. Support block; 2037. Third clamping plate; 204. Camera; 3. Cleaning components; 301. Front plate; 302. Second lead screw; 303. Third slider; 3041. Straight plate; 3042. H-shaped plate; 305. Connecting plate; 3061. C-shaped frame; 3062. Eleventh telescopic component; 3063. Arc brush; 3071. Push plate; 3072. Guide column; 3073. Buffer spring; 3074. Cam; 4. Dust removal components; 401. Rotary shaft; 402. Multi-port nozzle mounting bracket; 403. Multi-port nozzle; 404. Tenth telescopic component; 405. Second flexible hose; 406. Vacuum cleaner main unit; 407. Nozzle; 408. Suction hose; 5. Test strip moving assembly; 501. Vacuum suction cup; 502. First slider; 503. Horizontal slide rail; 504. Vertical slide rail; 505. First telescopic component; 6. Camera protective component; 601. Second slider; 602. Ninth telescopic component; 603. Protective plate. Detailed Implementation

[0020] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0021] In this invention, the directional terms such as "up," "down," "left," "right," "front," "back," "top," and "bottom" are all used in conjunction with... Figure 2 The direction defined by the central cross-shaped directional marker is the reference. In this invention, all directional terms are described based on this definition and do not change the direction they represent regardless of the angle of the diagram.

[0022] Definitions of relevant terms used in this invention: (1) Manufactured sand: also known as artificial sand, is obtained from raw materials such as granite and limestone after soil removal, crushing and screening. It can be used to replace non-renewable natural sand.

[0023] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6As shown, the present invention provides a device for testing the flexural strength of manufactured sand concrete, comprising, from front to back, a dimension measuring component 1 for measuring the length, width, and height of a test strip, and a flexural strength testing component 2 for testing the flexural strength of the test strip. The dimension measuring component 1 includes a support base 1011, a base 1012 on top of the support base 1011, the base 1012 being rotatably mounted on the top of the support base 1011, a vertical first motor mounted on the support base 1011 for driving the base 1012 to rotate vertically, and a lifting and lowering annular plate 1013 outside the base 1012; two vertical fifth telescopic members 104 for driving the lifting and lowering of the annular plate 1013 are fixedly mounted on the support base 1011. The support base 1011 is equipped with at least two limiting posts, and a limiting ring for each limiting post 10132 to slide up and down is fixedly installed on the support base 1011; ear plates 10131 are symmetrically arranged on the left and right sides of the top of the annular plate 1013, and a first fixing member for clamping and fixing the test strip is rotatably installed on the two ear plates 10131, which can rotate around the left and right direction; a small slide table 1021 that can slide left and right is provided on the top of the base 1012, a horizontal first lead screw is provided in the base 1012, and a [missing information - likely a design feature] is provided beside the base 1012. A second motor is provided to drive the first lead screw to rotate. A first lead screw nut that matches the first lead screw is provided on the first lead screw. The small slide 1021 is fixedly connected to the first lead screw nut. A small slide block 1022 that can slide back and forth on the top of the small slide block 1021 is provided on the top of the small slide block 1021. A horizontal fourth telescopic member 1025 that drives the small slide block 1022 to slide back and forth on the top of the small slide block 1021 is fixedly installed on the top of the base 1012. A mounting groove 1023 that can rotate around the front and back direction is rotatably installed on the side of the small slide block 1022 near the first fixed member. A horizontal third motor that drives the mounting groove 1023 to rotate around the front and back direction is installed on the small slide block 1022. Two first clamping plates 1024 that can move synchronously towards each other or away from each other along the length direction of the mounting groove 1023 are provided in the mounting groove 1023. An infrared ranging sensor for measuring the distance between the two first clamping plates 1024 is fixedly installed on one of the first clamping plates 1024. The mounting slot 1023 is equipped with a first forward and reverse toothed ball screw. A first right-hand screw nut is installed on one side of the first forward and reverse toothed ball screw, and a first left-hand screw nut is installed on the other side. One first clamping plate 1024 is fixedly connected to the first right-hand screw nut, and the other first clamping plate 1024 is fixedly connected to the first left-hand screw nut. A vertical fourth motor for driving the first forward and reverse toothed ball screw to rotate is fixedly installed on the mounting slot 1023.The first fixing component includes mounting blocks 1031 that are rotatably mounted on two ear plates 10131 and can rotate in the left and right directions. Two horizontal sixth motors 105 are fixedly mounted on the annular plate 1013 to drive the two mounting blocks 1031 to rotate in the left and right directions respectively. Horizontal third telescopic members 1032 are fixedly mounted on the side of the two mounting blocks 1031 that are close to each other. The top of the telescopic end of the third telescopic member 1032 is equipped with a first clamping block 1033. The extension of the telescopic ends of the two third telescopic members 1032 can realize the two first clamping blocks 1033 moving towards each other in the left and right directions. The shortening of the telescopic ends of the two third telescopic members 1032 can realize the two first clamping blocks 1033 moving away from each other in the left and right directions. In this way, the displacement of the test strip in the left and right directions can be restricted. The side of the first clamping blocks 1033 that are close to each other is provided with a second clamping plate 1034 that can move synchronously towards or away from each other in the up and down directions. On the adjacent surfaces of the first clamping block 1033, second forward and reverse thread ball screws are provided. A second right-hand screw nut is installed on one side of each second forward and reverse thread ball screw, and a second left-hand screw nut is installed on the other side. One second clamping plate 1034 is fixedly connected to the second right-hand screw nut, and the other second clamping plate 1034 is fixedly connected to the second left-hand screw nut. A vertical fifth motor for driving the rotation of the second forward and reverse thread ball screws is fixedly installed on the first clamping block 1033.

[0024] like Figure 1 , Figure 2 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12 , Figure 20As shown, the bending resistance testing assembly 2 includes a force-bearing component that can move back and forth for placing the test strip, a force-applying component that can be raised and lowered for applying stable pressure to the test strip, an inverted U-shaped frame 2011, and a back plate 2012 fixedly installed on the rear side of the inverted U-shaped frame 2011. A camera 204 for acquiring images of the test strip in the bending resistance testing assembly 2 is installed on the back plate 2012, and a camera protection component 6 for protecting the camera 204 is installed on the back plate 2012. The camera protection component 6 includes a second slider 601 that can be raised and lowered, and a vertical ninth telescopic component 602 fixedly installed on the back plate 2012 for driving the second slider 601 to rise and fall. A protective plate 603 for protecting the lens of the camera 204 is fixedly installed on the second slider 601. The force-applying components include two parallel force rollers 2021 that can be raised and lowered to apply stable pressure to the test strip. Both force rollers 2021 are fixedly mounted on the bottom of a pressure plate 2022, which is fixedly mounted on the bottom of a strain gauge pressure sensor used to measure the load applied to the test strip. The top of the strain gauge pressure sensor is connected to the top end of the telescopic end of a vertical sixth telescopic component 2023. The sixth telescopic component 2023 is fixedly mounted on the bottom of the top plate of an inverted U-shaped frame 2011. When the telescopic end of the sixth telescopic component 2023 remains stationary at a certain length, the force-applying components can apply stable pressure to the test strip. When observing the state of the test strip under a dimensional reference load, the force-applying components need to apply stable pressure to keep the load on the test strip as close as possible to the dimensional reference load. The reference load is inch, and when the telescopic end extends or shortens at a uniform speed, the applied pressure can be changed; the force-bearing component includes two parallel force rollers 2031 for placing the test strip. The central axes of the two force rollers 2031 and the two force-applying rollers 2021 are located in four different vertical planes, so that the test strip is subjected to force at four points, forming a four-point bending. The two force rollers 2031 are fixedly installed on the top of the large slide table 2032. A large slide rail 2033 for sliding the large slide table 2032 back and forth is installed between the two vertical ends of the inverted U-shaped frame 2011. A seventh telescopic component for driving the large slide table 2032 to slide back and forth is provided on the front side of the large slide rail 2033. A second fixing component for limiting the displacement of the test strip in the front-back and left-right directions is provided on the large slide table 2032. The second fixing component includes two second clamping blocks 2034 that can move in opposite directions in the left and right directions to limit the displacement of the test strip in the left and right directions. The large slide table 2032 is provided with two eighth telescopic components 2035 that are respectively used to drive the two second clamping blocks 2034 to slide in the left and right directions. The large slide table 2032 is provided with a support block 2036. The top of the support block 2036 is located on the same horizontal plane as the top of the force roller 2031. The support block 2036 is provided with two third clamping plates 2037 that can move synchronously in opposite directions in the front and back directions to limit the displacement of the test strip in the front and back directions.A third forward and reverse thread ball screw is installed on the top of the support block 2036. A third right-hand screw nut is installed on one side of the third forward and reverse thread ball screw, and a third left-hand screw nut is installed on the other side. One third clamping plate 2037 is fixedly connected to the third right-hand screw nut, and the other third clamping plate 2037 is fixedly connected to the third left-hand screw nut. A horizontal seventh motor for driving the rotation of the third forward and reverse thread ball screw is fixedly installed on the support block 2036.

[0025] like Figure 1 , Figure 2 , Figure 7 , Figure 8 , Figure 12 , Figure 13 , Figure 14 , Figure 15 , Figure 16 , Figure 17 , Figure 18As shown, the bending resistance testing component 2 is equipped with a cleaning component 3 for cleaning debris from the stressed component and a dust removal component 4 for adsorbing debris generated after the test strip is damaged. The cleaning component 3 includes a liftable front plate 301 slidably mounted on the front side of the inverted U-shaped frame 2011. A vertical second lead screw 302 is rotatably mounted on one side of the inverted U-shaped frame 2011. A second lead screw nut matching the second lead screw 302 is provided on the second lead screw 302, and the second lead screw nut is fixedly connected to the front plate 301. A ninth motor capable of driving the second lead screw 302 to rotate vertically is provided on the inverted U-shaped frame 2011. A third slider 303 capable of sliding up and down is slidably mounted on the front of the front plate 301. A straight plate 304 capable of rotating left and right is rotatably mounted on the front of the third slider 303. 1. An eleventh motor for driving the straight plate 3041 to rotate is installed on the third slider 303. An H-shaped plate 3042 is vertically installed on the end of the straight plate 3041 away from the third slider 303. The H-shaped plate 3042 is located on the side of the straight plate 3041 near the front plate 301. The straight plate 3041 and the H-shaped plate 3042 form an L-shaped structure. A connecting plate 305 is installed on the side of the H-shaped plate 3042 away from the front plate 301. A force roller cleaning component capable of cleaning the two force rollers 2031 is installed on the connecting plate 305. The force roller cleaning component includes a C-shaped frame 3061 that is vertically slidably installed on the connecting plate 305 and... An eleventh telescopic component 3062 is used to drive the C-shaped frame 3061 to slide back and forth in a direction parallel to the H-shaped plate 3042. An arc-shaped brush 3063, matching the shape of the force roller 2031, is fixedly installed on the two vertical ends of the C-shaped frame 3061. The bristles of the arc-shaped brush 3063 are used to contact the surface of the force roller 2031. A push plate 3071, capable of sliding back and forth in a direction parallel to the H-shaped plate 3042, is installed on the end of the H-shaped plate 3042 away from the straight plate 3041. This push plate 3071 is used to clean debris from the support block 2036. A cleaning feature is provided on the side of the push plate 3071 closest to the support block 2036. The brush bristles at the top of the 036 push plate 3071 have a guide post 3072 vertically mounted on the side of the push plate 3071 near the H-shaped plate 3042. The end of the guide post 3072 away from the push plate 3071 extends through the horizontal end of the H-shaped plate 3042. A buffer spring 3073 is fitted over the portion of the guide post 3072 located between the push plate 3071 and the horizontal end of the H-shaped plate 3042. A cam 3074 is rotatably mounted on the H-shaped plate 3042, capable of driving the guide post 3072 to reciprocate in a direction parallel to the H-shaped plate 3042 during rotation. A tenth motor is provided on the H-shaped plate 3042 to drive the cam 3074 to rotate. A twelfth telescopic member is vertically mounted on the side of the push plate 3071 away from the H-shaped plate 3042, and an extension push plate is vertically fixed to the top of the telescopic end of the twelfth telescopic member.A collection chamber is formed between the rear side of the large slide rail 2033, the front side of the back plate 2012, and the inverted U-shaped frame 2011 to collect fragments pushed off the support block 2036 by the push plate 3071. Suction heads 407 are provided on both sides of the collection chamber, and each suction head 407 is connected to the vacuum cleaner main unit 406 via two suction pipes 408. A cleaning hole is provided at the bottom of the back plate 2012 to facilitate cleaning of the collection chamber by personnel. The third clamping plate 2037 is relatively low, slightly higher than the top of the support block 2036, serving a positioning function to avoid interfering with the push plate 3071's cleaning of the support block 2036. The dust removal assembly 4 includes a horizontal rotating shaft 401 capable of rotating in a left-right direction. The rotating shaft 401 is rotatably mounted between the two vertical ends of an inverted U-shaped frame 2011. An eighth motor for driving the rotating shaft 401 to rotate in a left-right direction is mounted on the inverted U-shaped frame 2011. A multi-port suction head mounting bracket 402 is fixedly mounted on the rotating shaft 401. A multi-port suction head 403 capable of reciprocating along a direction perpendicular to the central axis of the rotating shaft 401 is slidably mounted in the multi-port suction head mounting bracket 402. A tenth telescopic member 404 for driving the multi-port suction head 403 to reciprocate along a direction perpendicular to the central axis of the rotating shaft 401 is fixedly mounted on the multi-port suction head mounting bracket 402. The multi-port suction head 403 is connected to the vacuum cleaner host 406 through two second hoses 405.

[0026] like Figure 1 , Figure 2 , Figure 19 As shown, a strip moving component 5 is provided in front of the dimension measuring component 1, capable of moving the test strip on the dimension measuring component 1 to the bending resistance testing component 2. The dimension measuring component 1, the bending resistance testing component 2, and the strip moving component 5 are all fixedly mounted on the top of the substrate. The strip moving component 5 includes a vacuum suction cup 501 that can be raised, lowered, and moved back and forth to adsorb the top of the test strip. The vacuum suction cup 501 is fixedly mounted on a first slider 502 that can move back and forth. The first slider 502 is slidably mounted on the bottom of a horizontal slide groove 503. The horizontal slide groove 503 is slidably mounted on a vertical slide rail 504 that allows the horizontal slide groove 503 to slide up and down. A vertical first telescopic member 505 is provided at the top of the vertical slide rail 504 for driving the horizontal slide groove 503 to slide up and down. A horizontal second telescopic member is fixedly mounted on the horizontal slide groove 503 for driving the first slider 502 to slide back and forth in the horizontal slide groove 503. The vacuum suction cup 501 is connected to the vacuum pump through the first hose. The first hose passes through the first slider 502 and the horizontal slide groove 503. The top of the horizontal slide groove 503 has a strip hole for the first hose to move back and forth.

[0027] The working principle of this invention is as follows: The vacuum suction cup 501 of the test strip moving assembly 5 adsorbs the test strip, so that the test strip is located above the base 1012 of the size measuring assembly 1. The telescopic ends of the two third telescopic members 1032 extend, driving the two first clamping blocks 1033 to move towards each other in the left and right directions to clamp the test strip, thereby limiting the displacement of the test strip in the left and right directions. The two fifth motors are started, respectively driving the second positive and negative tooth ball screws to rotate, so that the two second clamping plates 1034 on each first clamping block 1033 move towards each other in the up and down directions to clamp the test strip, thereby limiting the displacement of the test strip in the up and down directions.

[0028] The second motor is started to drive the first lead screw to rotate, thereby moving the small slide 1021 in the left and right directions through the first lead screw nut, so that the small slide 1021 reaches the appropriate position; the fourth telescopic member 1025 is started to control the extension or retraction of the telescopic end of the fourth telescopic member 1025, so that the small slide 1022 slides in the front and back directions, so that the small slide 1022 reaches the appropriate position; the first motor is started to control the base 1012 to rotate in the vertical direction, so that the mounting groove 1023 is parallel to the test strip to be measured surface.

[0029] Initially, both first clamping plates 1024 are in a vertical position. After the test strip is fixed, the fourth motor starts and drives the first positive and negative toothed ball screw to rotate, causing the two first clamping plates 1024 to move towards each other in the left and right directions to clamp the test strip. The distance between the two first clamping plates 1024 measured by the infrared ranging sensor at this time is the length of the test strip.

[0030] The fourth motor is controlled to change its rotation direction, causing the two first clamping plates 1024 to move in opposite directions in the left-right direction; the telescopic end of the fourth telescopic member 1025 is controlled to shorten, causing the small slide block 1022 to slide backward; the third motor is started, driving the mounting groove 1023 to rotate to a position where the two first clamping plates 1024 are in a horizontal state, causing the small slide block 1022 to slide forward, causing the two first clamping plates 1024 to move towards each other in the up-down direction, clamping the test strip; the distance between the two first clamping plates 1024 measured by the infrared distance sensor at this time is the height of the test strip. The two first clamping plates 1024 are moved in opposite directions in the vertical direction, and the small slide block 1022 slides backward. The sixth motor 105 is controlled to drive the mounting block 1031 to rotate 90° in the left and right direction, so that the second clamping plates 1034 are both perpendicular to the horizontal direction. The small slide block 1022 slides forward, and the two first clamping plates 1024 move towards each other in the vertical direction to clamp the test strip. The distance between the two first clamping plates 1024 measured by the infrared distance sensor at this time is the width of the test strip. After measurement, the small slide block 1022 slides backward to its initial position. The third motor returns the two first clamping plates 1024 to a state perpendicular to the horizontal direction. The sixth motor 105 returns the second clamping plate 1034 to a state parallel to the horizontal direction. Initially, the vacuum suction cup 501 is at its highest point and foremost position. After the test strip completes the dimensional inspection, the telescopic end of the first telescopic member 505 extends, causing the horizontal slide groove 503 to slide downward on the vertical slide rail 504. Once the vacuum suction cup 501 contacts the top of the test strip, the vacuum pump draws air, causing the vacuum suction cup 501 to adhere to the test strip. The telescopic end of the first telescopic member 505 then shortens, causing the horizontal slide groove 503 to slide upward on the vertical slide rail 504. The test strip moves and stops at a certain height. The telescopic end of the second telescopic component extends, causing the first slider 502 to slide backward in the horizontal slide groove 503. The first flexible tube slides backward in the strip hole until the test strip reaches above the force roller 2031 of the bending resistance testing component 2 and stops at this position. The telescopic end of the first telescopic component 505 extends, causing the horizontal slide groove 503 to slide downward. After the test strip contacts the force roller 2031 of the bending resistance testing component 2, the vacuum pump stops running, releasing the suction state of the vacuum suction cup 501. The telescopic end of the first telescopic component 505 shortens, causing the horizontal slide groove 503 to move upward back to the initial position. The telescopic end of the second telescopic component shortens, causing the first slider 502 to slide forward back to the initial position. The second clamping plate 1034 moves backward in the vertical direction, and the two first clamping blocks 1033 move backward in the horizontal direction, returning to the initial position, waiting for the next measurement.

[0031] After the test strip is placed on the force roller 2031 and the support block 2036, the seventh motor starts and drives the third forward and reverse toothed ball screw to rotate, thereby causing the two third clamping plates 2037 to move synchronously towards each other until the test strip is clamped, thus limiting the displacement of the test strip in the front-back direction. The telescopic ends of the two eighth telescopic components 2035 are shortened, causing the two second clamping blocks 2034 to move towards each other to clamp the test strip, thus limiting the displacement of the test strip in the left-right direction. At this time, because the test strip is supported by the force roller 2031 and the support block 2036, there is almost no displacement in the up-down direction. Therefore, the test strip is completely fixed at this time. The telescopic end of the seventh telescopic component is extended, causing the large slide table 2032 to slide backward on the large slide rail 2033 until it slides to the testing station and stops at this position.

[0032] The telescopic end of the sixth telescopic component 2023 is extended, thereby driving the two force rollers 2021 to move downwards. When the two force rollers 2021 contact the test strip, the telescopic end of the sixth telescopic component 2023 continues to extend, causing the load on the test strip to approach the dimensional reference load obtained based on the measured dimensions of the test strip. The telescopic end pauses at this position, applying stable pressure to the test strip. The state of the test strip is recorded by a camera 204. Subsequently, the telescopic end of the sixth telescopic component 2023 continues to extend until the test strip breaks, obtaining the failure load. The load on the test strip is the force value measured by the strain gauge pressure sensor. The strain gauge pressure sensor continuously measures the load applied to the test strip. Before the test strip breaks, the load continuously increases. When the test strip breaks, the load-bearing capacity suddenly decreases, and the force value drops precipitously. The maximum force value before the precipitous drop is the failure load.

[0033] When the large slide table 2032 slides up and down the large slide rail 2033, the ninth motor is activated to drive the second lead screw 302 to rotate, so that the third slider 303 moves downward on the front of the front plate 301 and stops at the expected position; the eleventh motor is activated to make the straight plate 3041 rotate until the H-shaped plate 3042 is parallel to the top of the support block 2036. After the test strip is broken and the camera 204 takes a picture, the telescopic end of the eleventh telescopic component 3062 is extended, so that the arc brush 3063 brushes across the force roller 2031 from front to back. At the same time, the tenth motor is activated to drive the cam 3074 to rotate, so that the push plate 3071 can move back and forth. The bristles brush over the top of the support block 2036 and push the fragments backward. The telescopic end of the twelfth telescopic component is extended, which drives the extension push plate to push further backward to push the fragments in the far position down until they fall into the collection chamber. Simultaneously, the vacuum cleaner main unit 406 is activated to provide suction to the multi-port nozzles 403 and 407. The eighth motor is activated, causing the rotating shaft 401 to rotate, thereby driving the multi-port nozzle mounting bracket 402 to rotate left and right, which in turn drives the multi-port nozzles 403 to rotate left and right. The tenth telescopic component 404 is activated, causing the multi-port nozzles 403 to slide back and forth in the multi-port nozzle mounting bracket 402 along a direction perpendicular to the central axis of the rotating shaft 401, thereby expanding the suction range of the multi-port nozzles 403. At the same time, the nozzles 407 on both sides of the inverted U-shaped frame 2011 will also absorb dust in the collection chamber, further expanding the suction range.

[0034] Start the seventh motor to make the two third clamping plates 2037 move synchronously in opposite directions, control the extension ends of the two eighth telescopic components 2035 to extend, make the two second clamping blocks 2034 move towards each other, control the extension ends of the seventh telescopic component to shorten, and drive the large slide table 2032 to slide forward on the large slide rail 2033 to return to the initial position.

Claims

1. A device for testing the flexural strength of manufactured sand concrete, characterized in that, It includes a dimension measuring component (1) set from front to back for measuring the length, width and height of the test strip, and a bending resistance testing component (2) for testing the bending resistance of the test strip. The bending resistance test assembly (2) includes a force-bearing component that can move back and forth to place the test strip and a force-applying component that can rise and fall to apply stable pressure to the test strip; the bending resistance test assembly (2) is provided with a cleaning component (3) for cleaning the fragments on the force-bearing component and a dust removal component (4) for adsorbing the debris generated after the test strip is damaged.

2. The device for testing the flexural strength of manufactured sand concrete according to claim 1, characterized in that, The size measuring component (1) is provided with a test strip moving component (5) in front of it, which can move the test strip on the size measuring component (1) to the test strip moving component (2) on the bending resistance testing component (2).

3. The device for testing the flexural strength of manufactured sand concrete according to claim 2, characterized in that, The test strip moving assembly (5) includes a vacuum suction cup (501) for adsorbing test strips that can be raised and lowered and moved back and forth. The vacuum suction cup (501) is fixedly installed on a first slider (502) that can move back and forth. The first slider (502) is slidably installed on the bottom of a horizontal slide groove (503). The horizontal slide groove (503) is slidably installed on a vertical slide rail (504) that allows the horizontal slide groove (503) to slide up and down. The top of the vertical slide rail (504) is provided with a vertical first telescopic member (505) for driving the horizontal slide groove (503) to slide up and down.

4. A device for testing the flexural strength of manufactured sand concrete according to any one of claims 1 to 3, characterized in that, The dimension measuring component (1) includes a support base (1011), a base (1012) is provided on the top of the support base (1011), and a circular ring plate (1013) that can be raised and lowered is provided outside the base (1012); ear plates (10131) are symmetrically provided on the left and right sides of the circular ring plate (1013), and a first fixing member for clamping and fixing the test strip is rotatably installed on the two ear plates (10131) and can rotate around the left and right directions; The base (1012) has a small slide (1021) that can slide left and right on its top. The small slide (1021) has a small slide block (1022) that can slide back and forth on its top. The small slide block (1022) has a mounting groove (1023) that can rotate around the front and back direction on the side near the first fixing member. The mounting groove (1023) has two first clamping plates (1024) that can move synchronously towards each other or away from each other along the length of the mounting groove (1023). An infrared ranging sensor for measuring the distance between the two first clamping plates (1024) is fixedly installed on one of the first clamping plates (1024).

5. The device for testing the flexural strength of manufactured sand concrete according to claim 4, characterized in that, The first fixing member includes mounting blocks (1031) that are rotatably mounted on two ear plates (10131) and can rotate around in the left and right directions; a horizontal third telescopic member (1032) is fixedly mounted on the side of the two mounting blocks (1031) that are close to each other; a first clamping block (1033) is mounted on the top of the telescopic end of the third telescopic member (1032); and a second clamping plate (1034) that can move synchronously in opposite directions or in opposite directions in the up and down directions is provided on the side of the first clamping block (1033) that is close to each other.

6. A device for testing the flexural strength of manufactured sand concrete according to any one of claims 1 to 3, characterized in that, The bending resistance testing component (2) includes an inverted U-shaped frame (2011) and a back plate (2012) fixedly installed on the rear side of the inverted U-shaped frame (2011); a camera (204) for acquiring images of the test strips in the bending resistance testing component (2) is installed on the back plate (2012). The force-applying components include two parallel force-applying rollers (2021) that can be raised and lowered to apply stable pressure to the test strip. Both force-applying rollers (2021) are fixedly installed at the bottom of the pressure plate (2022). The pressure plate (2022) is fixedly installed at the bottom of a strain gauge pressure sensor used to measure the load applied to the test strip. The top of the strain gauge pressure sensor is connected to the top end of the telescopic end of the vertical sixth telescopic component (2023). The sixth telescopic component (2023) is fixedly installed at the bottom of the top plate of the inverted U-shaped frame (2011). The force-bearing components include two parallel force rollers (2031) for placing the test strip. The two force rollers (2031) are fixedly installed on the top of the large slide table (2032). A large slide rail (2033) for the large slide table (2032) to slide back and forth is installed between the two vertical ends of the inverted U-shaped frame (2011). A seventh telescopic component for driving the large slide table (2032) to slide back and forth is provided on the front side of the large slide rail (2033). A second fixing component for limiting the displacement of the test strip in the front-back and left-right directions is provided on the large slide table (2032).

7. The device for testing the flexural strength of manufactured sand concrete according to claim 6, characterized in that, The second fixing member includes two second clamping blocks (2034) that can move in opposite directions or in opposite directions in the left and right directions to limit the displacement of the test strip in the left and right directions. The large slide table (2032) is provided with two eighth telescopic members (2035) that are respectively used to drive the two second clamping blocks (2034) to slide in the left and right directions. A support block (2036) is provided on the large slide table (2032), and two third clamping plates (2037) are provided on the support block (2036) to limit the displacement of the test strip in the front-back direction, which can move synchronously in opposite directions or in opposite directions.

8. The device for testing the flexural strength of manufactured sand concrete according to claim 6, characterized in that, The back panel (2012) is equipped with a camera protector (6) for protecting the camera (204).

9. The device for testing the flexural strength of manufactured sand concrete according to claim 6, characterized in that, The cleaning assembly (3) includes a liftable front plate (301) that is slidably mounted on the front side of the inverted U-shaped frame (2011). A third slider (303) that can slide up and down is slidably mounted on the front side of the front plate (301). A straight plate (3041) that can rotate around the left and right direction is rotatably mounted on the front side of the third slider (303). An H-shaped plate (3042) is vertically mounted on the end of the straight plate (3041) away from the third slider (303). A connecting plate (305) is mounted on the side of the H-shaped plate (3042) away from the front plate (301). A force roller cleaning component that can clean the two force rollers (2031) is mounted on the connecting plate (305). A push plate (3071) for cleaning up debris on the support block (2036) is installed on the end of the H-shaped plate (3042) away from the straight plate (3041). The push plate (3071) is capable of sliding back and forth in a direction parallel to the H-shaped plate (3042).

10. A device for testing the flexural strength of manufactured sand concrete according to any one of claims 1 to 3, characterized in that, The dust removal assembly (4) includes a horizontal rotating shaft (401) that can rotate in the left and right direction. A multi-port suction head mounting bracket (402) is fixedly installed on the rotating shaft (401). A multi-port suction head (403) that can slide back and forth along the central axis perpendicular to the rotating shaft (401) is slidably installed in the multi-port suction head mounting bracket (402). A tenth telescopic member (404) for driving the multi-port suction head (403) to slide back and forth along the central axis perpendicular to the rotating shaft (401) is fixedly installed on the multi-port suction head mounting bracket (402). The multi-port suction head (403) is connected to the vacuum cleaner host (406) through a second flexible hose (405).

Images