A building material hardness testing device

Abstract

This invention belongs to the field of material hardness testing and relates to a device for testing the hardness of building materials. It includes a fixed cylinder and a testing bracket. An air supply pipe is located at the top of the fixed cylinder. A push rod slides inside the fixed cylinder, and a pressure block is located at the bottom of the push rod. A pressure gauge is located on the outer wall of the fixed cylinder. A slide rail is located at the top of the testing bracket, and a moving platform is mounted on the slide rail. Two square countersunk holes are formed on the moving platform, and a placement plate is placed inside each square countersunk hole. A clamping mechanism is located beside the placement plate. A driving mechanism is located on the inner top wall of the testing bracket. Transfer mechanisms are located at both ends of the testing bracket, and a testing component is located at the top of each transfer mechanism. A U-shaped frame is located in the middle of the testing bracket, and an adjustment window and two translational electric cylinders are located at the top of the U-shaped frame. A mounting plate is located on the slide of the two translational electric cylinders, and an adjustment mechanism is located on the mounting plate. This invention not only improves the testing efficiency of building material hardness testing but also expands its applicability.

Description

Technical Field

[0001] This invention relates to the field of material hardness testing, and in particular to a device for testing the hardness of building materials. Background Technology

[0002] Hardness refers to a material's ability to resist indentation by a harder object. Depending on the testing method and application, hardness units can be divided into many types, such as Brinell hardness, Vickers hardness, Rockwell hardness, and micro-Vickers hardness. Different units have different testing methods and are suitable for materials or applications with different properties. Hardness testing is one of the important indicators for evaluating material performance and is also one of the fastest and most economical testing methods. It is a commonly used method for mechanical property testing because hardness testing can reflect differences in the chemical composition, microstructure, and processing technology of materials. Therefore, hardness testing devices are commonly used in municipal engineering, mainly for monitoring building materials to maximize the quality and safety of buildings.

[0003] A building material hardness testing device disclosed in patent publication number CN217878736U includes a pressure plate bolted to the upper surface of a base. The upper surface of the pressure plate has multiple adjustable grooves, and the inner walls of these grooves are fitted with clamping structures. A support plate is fitted to the top of the base, and a compression structure is fitted to the top of the support plate. This building material hardness testing device, through the arrangement of the clamping plates, allows for adjustment of the position of each clamping plate via sliding limiting posts, thereby clamping and fixing the building material to be tested. This reduces the possibility of the building material moving and affecting the testing process. Furthermore, the clamping plates are located at four points on the building material, making it less likely that the device will fail to clamp and fix the material even if it is irregularly shaped, further improving the practicality of the device.

[0004] However, this patent still has shortcomings: 1. Workers place building materials on the pressure plate, and then use a clamping structure to clamp the building materials. After the inspection is completed, the clamping structure is released from the building materials, and then the next building material to be inspected is placed on the pressure plate. This inspection method is slow; 2. This patent can only inspect building materials with a horizontal top surface. However, some building materials have an inclined top surface, and this inspection device cannot be used to inspect such building materials. Summary of the Invention

[0005] The technical problem to be solved by this invention is to address the issues of slow detection efficiency and limited detection range in existing building material hardness testing devices.

[0006] This invention provides a building material hardness testing device, including a fixed cylinder with an air supply pipe communicating with its top. A push rod is slidably mounted inside the fixed cylinder, with its bottom penetrating the bottom of the fixed cylinder. A pressure block is mounted on the bottom of the push rod. A pressure gauge is mounted on the outer wall of the fixed cylinder. The device also includes a testing bracket with a slide rail at its top. A movable platform is slidably mounted on the slide rail. Two symmetrically arranged square countersunk holes are formed on the movable platform. A placement plate matching the countersunk hole and used for placing building materials is placed within each square countersunk hole. A device for testing the building materials is located beside the placement plate. The automatic clamping mechanism includes a drive mechanism on the inner top wall of the detection bracket for moving the mobile platform, transfer mechanisms for loading and unloading building materials at both ends of the detection bracket, a detection component for detecting the levelness of the top surface of the building materials at the top of the transfer mechanism, a U-shaped frame at the top of the middle of the detection bracket, an adjustment window at the top of the U-shaped frame, translation cylinders on both sides of the adjustment window, mounting plates on the slides of the two translation cylinders, and an adjustment mechanism on the mounting plate for adjusting the placement angle of the fixed cylinder, with the fixed cylinder mounted on the adjustment mechanism.

[0007] In some embodiments, the clamping mechanism includes four first electric push rods, the output ends of which are fitted with clamping plates, and the four first electric push rods are evenly distributed around the square countersunk hole.

[0008] In some embodiments, the drive mechanism includes a first motor, a first rotating bracket, a main gear, and a rack. The top of the detection bracket has a clearance window for the main gear to pass through. The first motor is disposed on the inner top wall of the detection bracket. The first rotating bracket is located beside the first motor. The main gear is rotatably disposed on the first rotating bracket and is connected to the output end of the first motor. The top of the main gear passes through the clearance window. The rack is disposed at the bottom of the moving platform and meshes with the main gear.

[0009] In some embodiments, the transfer mechanism includes a lifting component for lifting the placement plate, a feeding box, a receiving box, and a push screw slide. The outer wall of the feeding box is provided with an adjustment component for adjusting the placement position of the building materials. The push screw slide is provided with two spaced-apart movable slides. A linkage frame is installed on the movable slides, and a push plate is installed on the linkage frame. Four first auxiliary supports are provided on the left and right outer walls of the detection bracket in pairs. Second auxiliary supports are provided at both ends of the detection bracket. The lifting component is provided on the inner side wall of the detection bracket. The feeding box and the receiving box are respectively located on the top of the two first auxiliary supports, and the feeding box and the receiving box are arranged opposite to each other. The push screw slide is inverted on the second auxiliary support, and both push plates are located inside the feeding box. The detection component is located on the top of the second auxiliary support, and the detection component is located directly above the feeding box.

[0010] In some embodiments, the lifting assembly includes a horizontal plate, a second electric push rod, and an upper moving plate. The top of the upper moving plate has four lifting rods arranged in a rectangular pattern. The top of the detection bracket has four through holes for the lifting rods to pass through. The bottom of the placement plate has four docking seats that mate with the top of the lifting rods. The horizontal plate is disposed on the two inner side walls of the detection bracket. The second electric push rod is vertically disposed at the bottom of the horizontal plate. The upper moving plate is horizontally disposed on the output end of the second electric push rod.

[0011] In some embodiments, the adjustment assembly includes a third electric push rod and an adjustment plate. The front of the adjustment plate is provided with a plurality of adjustment rollers that are equally spaced along its length. The third electric push rod is horizontally arranged on the outer wall of the feed box. The adjustment plate is arranged inside the feed box, and the back of the adjustment plate is fixedly connected to the output end of the third electric push rod.

[0012] In some embodiments, the detection assembly includes a suspension rod, a fourth electric actuator, a ball joint, and a level sensor. The suspension rod is disposed on top of a second auxiliary support, the fourth electric actuator is disposed inverted on the bottom of the suspension rod, the ball joint is disposed on the output end of the fourth electric actuator, and the level sensor is connected to the ball joint.

[0013] In some embodiments, the inner bottom wall of the receiving box is provided with a guiding inclined surface.

[0014] In some embodiments, the adjusting mechanism includes a rotating ring, a rotating sleeve, a second rotating bracket, a second motor, a third motor, a first gear, and a second gear. The top of the rotating sleeve has a moving groove for the fixed cylinder to swing and move. The top of the mounting plate has a circular hole. The rotating ring is disposed on the top of the mounting plate and is coaxial with the circular hole. The rotating sleeve is rotatably disposed on the rotating ring. The second rotating bracket is disposed on both sides of the moving groove. The outer wall of the fixed cylinder near its top has two symmetrically arranged rotating shafts. The fixed cylinder is rotatably disposed on two second rotating brackets through the two rotating shafts and is located in the moving groove and the circular hole. The second motor is disposed on the side wall of the second rotating bracket, and the output end of the second motor is fixedly connected to one of the rotating shafts. The third motor is disposed on the top of the mounting plate. The first gear is disposed on the outer wall of the rotating ring, and the second gear is disposed on the output end of the third motor and meshes with the first gear.

[0015] The beneficial effects of this invention are as follows:

[0016] Firstly, the building material hardness testing device of the present invention can detect the levelness of the top surface of the building material through the detection component, automatically feed the building material to be tested through the transfer mechanism, and automatically unload the building material after testing, thereby improving the efficiency of hardness testing. The adjustment mechanism can change the placement state of the fixed cylinder according to the detection results of the detection component, so that the fixed cylinder can always be perpendicular to the top surface of the building material. Hardness testing can also be performed on building materials with sloping top surfaces, thus expanding the applicability of the device.

[0017] Secondly, in the building material hardness testing device of the present invention, when the placement plate moves to the transfer mechanism, the lifting component first works to lift the placement plate upward, and then drives the two push plates to move by pushing electric push rods, so that the building material to be tested can be automatically loaded onto the placement plate, and the building material after testing can be automatically unloaded into the receiving box. Loading and unloading are carried out simultaneously, improving the transfer efficiency.

[0018] Thirdly, in the building material hardness testing device of the present invention, after the hardness testing of the building material on the first placement plate is completed, the loading and unloading of the second placement plate can also be completed at the same time. Then, the moving platform is driven by the driving mechanism to move the second placement plate to the underside of the U-shaped frame for hardness testing. The first placement plate is located at another transfer mechanism for loading and unloading. The loading and unloading process and the hardness testing process can always be carried out synchronously, which improves the testing efficiency.

[0019] Fourth, the building material hardness testing device of the present invention can automatically detect the levelness of the top surface of the building material by utilizing the cooperation between the fourth electric push rod, the ball head seat and the level sensor.

[0020] Fifth, the building material hardness testing device of the present invention enables the fixed cylinder to adjust its placement state according to the detection result of the level sensor through the cooperation of the rotating ring, rotating sleeve, second rotating bracket, second motor, third motor, first gear and second gear. Attached Figure Description

[0021] To more clearly illustrate the technical solution of the present invention, the accompanying drawings used in the present invention will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a three-dimensional structural schematic diagram of the building material hardness testing device of the present invention;

[0023] Figure 2 This is a partial schematic diagram of the building material hardness testing device of the present invention. Figure 1 ;

[0024] Figure 3 This is a partial cross-sectional view of the building material hardness testing device of the present invention;

[0025] Figure 4 This is a partial schematic diagram of the building material hardness testing device of the present invention. Figure 2 ;

[0026] Figure 5 This is a structural diagram of the transfer mechanism and the detection components;

[0027] Figure 6 for Figure 5 Enlarged view of point A in the middle;

[0028] Figure 7 This is a schematic diagram of the adjustment mechanism.

[0029] Reference numerals: 1. Fixed cylinder; 11. Gas pipe; 12. Push rod; 13. Pressure block; 14. Pressure gauge; 15. Rotating shaft; 2. Detection bracket; 21. Slide rail; 22. Moving platform; 221. Square countersunk hole; 23. Placement plate; 231. Docking seat; 24. U-shaped frame; 241. Adjustment window; 242. Translation electric cylinder; 243. Mounting plate; 25. First auxiliary bracket; 26. Second auxiliary bracket; 3. Clamping mechanism; 31. First electric push rod; 32. Clamping plate; 4. Drive mechanism; 41. First motor; 42. First rotating bracket; 43. Main gear; 44. Rack; 5. Transfer mechanism; 51. Lifting assembly; 511. Horizontal plate 512. Second electric push rod; 513. Upper moving plate; 514. Lifting rod; 52. Feed box; 53. Receiving box; 531. Guide inclined surface; 54. Push screw slide; 541. Moving slide; 542. Linkage frame; 543. Push plate; 55. Adjustment assembly; 551. Third electric push rod; 552. Adjustment plate; 553. Adjustment roller; 6. Detection assembly; 61. Suspension rod; 62. Fourth electric push rod; 63. Ball head seat; 64. Level sensor; 7. Adjustment mechanism; 71. Rotating sleeve; 72. Moving groove; 73. Second rotating bracket; 74. Second motor; 75. Third motor; 76. First gear; 77. Second gear. Detailed Implementation

[0030] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0031] In this embodiment, such as Figures 1 to 7As shown, a building material hardness testing device includes a fixed cylinder 1, with an air supply pipe 11 connected to the top of the fixed cylinder 1. A push rod 12 is slidably mounted inside the fixed cylinder 1, with its bottom penetrating the bottom of the fixed cylinder 1. A pressure block 13 is mounted on the bottom of the push rod 12. A pressure gauge 14 is mounted on the outer wall of the fixed cylinder 1. The device also includes a testing bracket 2, with a slide rail 21 at its top. A moving platform 22 is slidably mounted on the slide rail 21. The moving platform 22 has two symmetrically arranged square countersunk holes 221. A placement plate 23, matching the countersunk hole 221 and used for placing building materials, is located inside the square countersunk hole 221. A pressure plate 23 is provided beside the placement plate 23 for testing the building materials. The clamping mechanism 3 is used for moving the clamping mechanism. The inner top wall of the detection bracket 2 is provided with a driving mechanism 4 for moving the moving platform 22. Both ends of the detection bracket 2 are provided with a transfer mechanism 5 for loading and unloading building materials. The top of the transfer mechanism 5 is provided with a detection component 6 for detecting the levelness of the top surface of the building materials. The top of the middle part of the detection bracket 2 is provided with a U-shaped frame 24. The top of the U-shaped frame 24 is provided with an adjustment window 241. Both sides of the adjustment window 241 are provided with translation electric cylinders 242. The slide of the two translation electric cylinders 242 is provided with a mounting plate 243. The mounting plate 243 is provided with an adjustment mechanism 7 that can adjust the placement angle of the fixed cylinder 1. The fixed cylinder 1 is set on the adjustment mechanism 7.

[0032] Workers place the building materials to be inspected into a transfer mechanism 5. The transfer mechanism 5 then automatically feeds the building materials onto a placement plate 23 of a moving platform 22. The transfer mechanism 5 includes a lifting component 51 for lifting the placement plate 23, a feeding box 52, a receiving box 53, and a push screw slide 54. The outer wall of the feeding box 52 is equipped with an adjustment component 55 for adjusting the placement position of the building materials. The push screw slide 54 has two spaced-apart moving slides 541, with a linkage frame 542 mounted on each moving slide 541. A push plate 543 is mounted on the linkage frame 542. The inspection support... Four first auxiliary supports 25 are provided on the outer walls of the left and right sides of the frame 2, arranged symmetrically in pairs. Second auxiliary supports 26 are provided at both ends of the detection frame 2. Lifting component 51 is provided on the inner side wall of the detection frame 2. Feed box 52 and receiving box 53 are respectively provided on the top of the two first auxiliary supports 25, and the feed box 52 and receiving box 53 are arranged opposite to each other. Push screw slide 54 is inverted and provided on the second auxiliary support 26. Two push plates 543 are located inside the feed box 52. Detection component 6 is provided on the top of the second auxiliary support 26, and the detection component 6 is located directly above the feed box 52.

[0033] Furthermore, the worker places the building material to be tested into the feeding box 52, and then adjusts the position of the building material using two adjustment components 55. The adjustment components 55 include a third electric push rod 551 and an adjustment plate 552. The front of the adjustment plate 552 is provided with several adjustment rollers 553 that are equally spaced along its length. The third electric push rod 551 is horizontally set on the outer wall of the feeding box 52. The adjustment plate 552 is set inside the feeding box 52, and the back of the adjustment plate 552 is fixedly connected to the output end of the third electric push rod 551. The third electric push rods 551 of the two adjustment components 55 work simultaneously to push the corresponding adjustment plates 552 toward the building material in the feeding box 52. The building material changes its position due to the pressure of the adjustment rollers 553.

[0034] Furthermore, after the building materials are positioned in the feed box 52, the detection component 6 begins operation. The detection component 6 includes a suspension rod 61, a fourth electric push rod 62, a ball joint 63, and a level sensor 64. The suspension rod 61 is positioned on top of the second auxiliary support 26. The fourth electric push rod 62 is inverted and positioned at the bottom of the suspension rod 61. The ball joint 63 is positioned on the output end of the fourth electric push rod 62. The level sensor 64 is connected to the ball joint 63. The fourth electric push rod 62 drives the ball joint 63 and the level sensor 64 downwards. If the building materials are... When the top surface of the building material is flat, the bottom surface of the level sensor 64 will directly adhere to the top surface of the building material. Then, the level sensor 64 can detect and determine the condition of the top surface of the building material. If the top surface of the building material is sloping, the bottom end of the level sensor 64 will first contact the high end of the sloping surface during the downward movement. Then, the bottom of the level sensor 64 can gradually adhere to the top of the building material through the rotation of the ball head seat 63. After adhering, the level sensor 64 can detect the tilt of the top surface of the building material.

[0035] Furthermore, after the inspection is completed, the lifting assembly 51 lifts the placement plate 23 upwards until it can connect with the feed box 52 and the receiving box 53. The lifting assembly 51 includes a horizontal plate 511, a second electric push rod 512, and an upper moving plate 513. The top of the upper moving plate 513 is provided with four rectangularly distributed lifting rods 514. The top of the inspection bracket 2 is provided with four through holes for the lifting rods 514 to pass through. The bottom of the placement plate 23 is provided with four docking seats 231 that mate with the top of the lifting rods 514. The horizontal plate 511 is set on the two inner side walls of the inspection bracket 2. The second electric push rod 512 is vertically set at the bottom of the horizontal plate 511, and the upper moving plate 513 is horizontally set on the output end of the second electric push rod 512. The second electric push rod 512 drives the upper moving plate 513 to move upward, and the four lifting rods 514 move upward synchronously with the upper moving plate 513. Then, the four lifting rods 514 can be inserted into the four docking seats 231 at the same time. Immediately afterwards, the placement plate 23 moves upward synchronously with the four lifting rods 514. After the top surface of the placement plate 23 is coplanar with the inner bottom wall of the feed box 52 and the inner bottom wall of the receiving box 53, the second electric push rod 512 stops working.

[0036] Next, the push screw slide 54 starts working, driving the two moving slides 541 to move synchronously. The slides drive the linkage bracket and the push plate 543 to move synchronously. If there is building material on the placement plate 23 that has completed hardness testing, the push plate 543 near one end of the placement plate 23 can push the building material on the placement plate 23 that has completed hardness testing into the receiving box 53. At the same time, the other push plate 543 pushes the building material to be tested in the feeding box 52 onto the placement plate 23. After the building material to be tested is pushed onto the placement plate 23, the building material that has completed hardness testing just enters the receiving box 53. The inner bottom wall of the receiving box 53 is provided with a guide inclined surface 531. The guide inclined surface 531 allows the building material entering the receiving box 53 to slide towards the tail end of the receiving box 53 by its own weight, so that the receiving box 53 can hold as many building materials as possible.

[0037] After the building material to be tested is loaded onto the placement plate 23, the lifting component 51 drives the placement plate 23 to move downward, and the placement plate 23 can be re-embedded into the square countersunk hole 221. Then the clamping mechanism 3 works. The clamping mechanism 3 includes four first electric push rods 31. The output end of the first electric push rods 31 is equipped with a clamping plate 32. The four first electric push rods 31 are evenly distributed around the square countersunk hole 221. The four first electric push rods 31 work simultaneously to drive the clamping plate 32 to move toward the building material. The four clamping plates 32 can clamp and fix the building material on the placement plate 23.

[0038] After clamping, the building materials on the placement plate 23 are moved directly below the U-shaped frame 24 by the drive mechanism 4. The drive mechanism 4 includes a first motor 41, a first rotating bracket 42, a main gear 43, and a rack 44. The top of the detection bracket 2 has a clearance window for the main gear 43 to pass through. The first motor 41 is located on the inner top wall of the detection bracket 2. The first rotating bracket 42 is located beside the first motor 41. The main gear 43 is rotatably mounted on the first rotating bracket 42 and is connected to the output end of the first motor 41. The top of 3 passes through the clearance window. The rack 44 is set at the bottom of the moving platform 22 and meshes with the main gear 43. The main gear 43 is driven to rotate by the first motor 41. The main gear 43 drives the rack 44 to move. The rack 44 drives the moving platform 22 to move synchronously. After the building material on the placement plate 23 moves to the bottom of the U-shaped frame 24, the first motor 41 stops working. The building material on the other placement plate 23 that has completed the hardness test moves to another transfer mechanism 5. The other transfer mechanism 5 also works synchronously.

[0039] Before performing hardness testing, the adjustment mechanism 7 needs to adjust the placement of the fixed cylinder 1 based on the results detected by the level sensor 64. The adjustment mechanism 7 includes a rotating ring, a rotating sleeve 71, a second rotating bracket 73, a second motor 74, a third motor 75, a first gear 76, and a second gear 77. The top of the rotating sleeve 71 has a moving groove 72 for the fixed cylinder 1 to swing and move. The top of the mounting plate 243 has a circular hole. The rotating ring is set on the top of the mounting plate 243, and the rotating ring and the circular hole are coaxial. The rotating sleeve 71 is rotatably mounted on the rotating ring. The second rotating bracket 73 is set on both sides of the moving groove 72. The outer wall of the fixed cylinder 1 near its top has two symmetrically arranged rotating shafts 15. The fixed cylinder 1 is rotatably mounted on the two second rotating brackets 73 through the two rotating shafts 15, and the fixed cylinder 1 is located in the moving groove 72 and the circular hole. The second motor 74 is set on the side wall of the second rotating bracket 73, and the output end of the second motor 74 is fixedly connected to one of the rotating shafts 15. The third motor 75 is set on the mounting plate 243. At the top, the first gear 76 is set on the outer wall of the rotating ring, and the second gear 77 is set on the output end of the third motor 75. The second gear 77 meshes with the first gear 76. If the top surface of the building material to be tested is an inclined surface, then during testing, the second motor 74 first drives the rotating shaft 15 to rotate. The rotating shaft 15 drives the fixed cylinder 1 to rotate around its axis, that is, the fixed cylinder 1 becomes an inclined placement state. Then, the third motor 75 drives the second gear 77 to rotate. The second gear 77 drives the first gear 76 to rotate. The first gear 76 drives the rotating sleeve 71 to rotate on the rotating ring. The rotating sleeve 71 drives the inclined fixed cylinder 1 to rotate around its axis until the fixed cylinder 1 is perpendicular to the top surface of the building material. Then, the third motor 75 stops working. The fixed cylinder 1 can also be driven to move horizontally through two translation motors, so that the fixed cylinder 1 can be adjusted to move a wider range. Then, the air supply pipe 11 is vented. The working principle thereafter is the same as the working principle of the extrusion structure in CN217878736U, and will not be described again here.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A building material hardness testing device, comprising a fixed cylinder (1), a gas supply pipe (11) communicating with the top of the fixed cylinder (1), a push rod (12) slidably disposed inside the fixed cylinder (1), the bottom of the push rod (12) penetrating the bottom of the fixed cylinder (1), a pressure block (13) disposed on the bottom of the push rod (12), and a pressure gauge (14) disposed on the outer wall of the fixed cylinder (1), characterized in that, It also includes a testing bracket (2), the top of which is provided with a slide rail (21), and a moving platform (22) that slides and cooperates with it on the slide rail (21). The moving platform (22) has two symmetrically arranged square countersunk holes (221), and a matching placement plate (23) for placing building materials is provided in the square countersunk holes (221). A clamping mechanism (3) for automatically clamping the building materials is provided on the side of the placement plate (23). A driving mechanism (4) for driving the moving platform (22) to move is provided on the inner top wall of the testing bracket (2). Both ends of the testing bracket (2) are provided with There is a transfer mechanism (5) for loading and unloading building materials. The top of the transfer mechanism (5) is equipped with a detection component (6) for detecting the levelness of the top surface of the building materials. The top of the middle part of the detection bracket (2) is equipped with a U-shaped frame (24). The top of the U-shaped frame (24) is equipped with an adjustment window (241). Both sides of the adjustment window (241) are equipped with translation cylinders (242). The slides of the two translation cylinders (242) are equipped with mounting plates (243). The mounting plate (243) is equipped with an adjustment mechanism (7) that can adjust the placement angle of the fixed cylinder (1). The fixed cylinder (1) is set on the adjustment mechanism (7).

2. The building material hardness testing device according to claim 1, characterized in that: The clamping mechanism (3) includes four first electric push rods (31), and a clamping plate (32) is installed on the output end of the first electric push rods (31). The four first electric push rods (31) are evenly distributed around the square countersunk hole (221).

3. The building material hardness testing device according to claim 1, characterized in that: The drive mechanism (4) includes a first motor (41), a first rotating bracket (42), a main gear (43), and a rack (44). The top of the detection bracket (2) is provided with a clearance window for the main gear (43) to pass through. The first motor (41) is set on the inner top wall of the detection bracket (2). The first rotating bracket (42) is located next to the first motor (41). The main gear (43) is rotatably set on the first rotating bracket (42) and is connected to the output end of the first motor (41). The top of the main gear (43) passes through the clearance window. The rack (44) is set at the bottom of the moving platform (22) and meshes with the main gear (43).

4. The building material hardness testing device according to claim 1, characterized in that: The transfer mechanism (5) includes a lifting assembly (51) for lifting the placement plate (23), a feeding box (52), a receiving box (53), and a push screw slide (54). The outer wall of the feeding box (52) is provided with an adjustment assembly (55) for adjusting the placement position of the building materials. The push screw slide (54) is provided with two spaced-apart movable slides (541). A linkage frame (542) is installed on the movable slide (541), and a push plate (543) is installed on the linkage frame (542). The outer walls of the left and right sides of the detection bracket (2) are provided with four first auxiliary brackets (2) arranged symmetrically in pairs. 5) The detection bracket (2) is provided with second auxiliary brackets (26) at both ends. The lifting component (51) is set on the inner side wall of the detection bracket (2). The feeding box (52) and the receiving box (53) are respectively set on the top of the two first auxiliary brackets (25), and the feeding box (52) and the receiving box (53) are arranged opposite to each other. The push screw slide (54) is inverted and set on the second auxiliary bracket (26). The two push plates (543) are located inside the feeding box (52). The detection component (6) is set on the top of the second auxiliary bracket (26), and the detection component (6) is located directly above the feeding box (52).

5. The building material hardness testing device according to claim 4, characterized in that: The lifting assembly (51) includes a horizontal plate (511), a second electric push rod (512), and an upper moving plate (513). The top of the upper moving plate (513) is provided with four lifting rods (514) arranged in a rectangular pattern. The top of the detection bracket (2) is provided with four through holes for the lifting rods (514) to pass through. The bottom of the placement plate (23) is provided with four docking seats (231) that connect with the top of the lifting rods (514). The horizontal plate (511) is set on the two inner side walls of the detection bracket (2). The second electric push rod (512) is set vertically at the bottom of the horizontal plate (511). The upper moving plate (513) is set horizontally at the output end of the second electric push rod (512).

6. The building material hardness testing device according to claim 4, characterized in that: The adjustment assembly (55) includes a third electric push rod (551) and an adjustment plate (552). The front of the adjustment plate (552) is provided with a plurality of adjustment rollers (553) that are equally spaced along its length. The third electric push rod (551) is horizontally arranged on the outer wall of the feed box (52). The adjustment plate (552) is arranged inside the feed box (52), and the back of the adjustment plate (552) is fixedly connected to the output end of the third electric push rod (551).

7. The building material hardness testing device according to claim 4, characterized in that: The detection component (6) includes a suspension rod (61), a fourth electric push rod (62), a ball joint (63), and a level sensor (64). The suspension rod (61) is located on the top of the second auxiliary support (26). The fourth electric push rod (62) is inverted and located on the bottom of the suspension rod (61). The ball joint (63) is located on the output end of the fourth electric push rod (62). The level sensor (64) is connected to the ball joint (63).

8. The building material hardness testing device according to claim 4, characterized in that: The receiving box (53) has a guide inclined surface (531) on its inner bottom wall.

9. The building material hardness testing device according to claim 1, characterized in that: The adjusting mechanism (7) includes a rotating ring, a rotating sleeve (71), a second rotating bracket (73), a second motor (74), a third motor (75), a first gear (76), and a second gear (77). The top of the rotating sleeve (71) is provided with a moving groove (72) for the fixed cylinder (1) to swing and move. The top of the mounting plate (243) is provided with a circular hole. The rotating ring is set on the top of the mounting plate (243), and the rotating ring and the circular hole are coaxial. The rotating sleeve (71) is rotatably mounted on the rotating ring. The second rotating bracket (73) is set on both sides of the moving groove (72). The outer wall of the fixed cylinder (1) near its top is provided with two symmetrically arranged... The fixed cylinder (1) is rotatably mounted on two second rotating supports (73) via two rotating shafts (15), and the fixed cylinder (1) is located in the moving groove (72) and the round hole. The second motor (74) is mounted on the side wall of the second rotating support (73), and the output end of the second motor (74) is fixedly connected to one of the rotating shafts (15). The third motor (75) is mounted on the top of the mounting plate (243). The first gear (76) is mounted on the outer wall of the rotating ring, and the second gear (77) is mounted on the output end of the third motor (75), and the second gear (77) meshes with the first gear (76).

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