Ultra-high performance concrete pressure detection device

Abstract

The utility model belongs to the technical field of concrete pressure detection, and particularly relates to an ultra-high performance concrete pressure detection device. Comprising a pressure testing machine body, two guide rails which are distributed front and back are arranged on a stand column of the pressure testing machine body, a mounting frame which is of a U-shaped structure is arranged between the two guide rails, the two side walls of the mounting frame are distributed front and back, and sliding rails which are in sliding fit with the guide rails and fixed to the mounting frame are arranged on the guide rails. The mounting frame is provided with a scraping plate used for cleaning fragments on a lower pressing plate of the pressure testing machine body, the mounting frame is provided with a driving assembly used for driving the scraping plate to scrape the fragments, and the bottom of the mounting frame is provided with a collecting basket used for collecting the fragments. According to the ultra-high performance concrete test piece crushing device, fragments generated after an ultra-high performance concrete test piece is crushed can be well cleaned, the manual cleaning time of workers is saved, and the efficiency of the workers for detecting the compressive strength of the test piece is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of concrete pressure detection, and particularly relates to a device for detecting the pressure of ultra-high performance concrete. Background Technique

[0002] Ultra-high performance concrete is a new type of cement-based engineering material with extremely high durability, workability and strength. It has significant advantages in aspects such as frost resistance, impermeability and chemical corrosion resistance. Its high self-density enables these properties to be improved, thus ensuring the long service life of the project. The compressive strength of ultra-high performance concrete far exceeds that of traditional concrete. A large amount of ultra-high performance concrete is used in modern building construction, road and bridge construction, etc. Whether the quality of ultra-high performance concrete is qualified is related to whether the quality of buildings, bridges or roads meets the standards. Among the detection items of ultra-high performance concrete, there is the detection of an ultra-high performance concrete pressure testing machine. The compressive strength of the ultra-high performance concrete is detected through the concrete pressure testing machine. During the detection, the ultra-high performance concrete specimen is placed on the lower platen of the concrete pressure testing machine. The bottom surface of the lower platen of the concrete pressure testing machine contacts the top of the specimen. An external force is applied at a uniform and continuous speed until the specimen breaks. The concrete pressure testing machine calculates the compressive strength of the concrete specimen based on the pressure measured by the pressure sensor when the specimen cracks, and judges whether the compressive strength of the ultra-high performance concrete is qualified.

[0003] At present, when detecting the compressive strength of ultra-high performance concrete, multiple specimens usually need to be detected. After detecting one specimen, it is necessary to manually clean the debris of the specimen on the lower platen before the next specimen detection can be carried out, which increases the workload of the staff and reduces the work efficiency. Content of the Utility Model

[0004] The purpose of the utility model is to provide a device for detecting the pressure of ultra-high performance concrete, which can better clean the debris after the ultra-high performance concrete specimen is broken and improve the work efficiency.

[0005] The device for detecting the pressure of ultra-high performance concrete includes a pressure testing machine body. There are two guide rails arranged front and back on the columns of the pressure testing machine body. An installation frame with a "C" - shaped structure is arranged between the two guide rails. The two side walls of the installation frame are arranged front and back. There are slide rails on the guide rails that are in sliding fit with the guide rails and fixed on the installation frame. A scraper for cleaning the debris on the lower platen of the pressure testing machine body is arranged on the installation frame. A driving component for driving the scraper to scrape off the debris is arranged on the installation frame. A collection basket for collecting the debris is arranged at the bottom of the installation frame.

[0006] Furthermore, the driving assembly includes a motor installed on a mounting frame, and mounting grooves are provided on the corresponding surfaces of the two side walls of the mounting frame, and freely rotating threaded rods are provided in the mounting grooves, and the threaded rods are each provided with adjusting nuts that are threadedly matched with the threaded rods. The two adjusting nuts are connected by a scraper, and one end of one of the threaded rods passes through the side wall of the mounting frame and is connected to the output shaft of the motor, and the other end of the corresponding threaded rod is provided with countersunk holes on the two side walls of the mounting frame, and a rotating rod is rotatably connected in the countersunk holes, and first bevel gears are installed at both ends of the rotating rod, and the ends of the threaded rods pass through the mounting grooves and are fixed with second bevel gears that mesh with the first bevel gear.

[0007] Furthermore, fixed plates are fixed on the corresponding surfaces of the two adjusting nuts, and the two fixed plates are connected by a connecting rod. The bottom of the connecting rod is connected to the top of the scraper, and a brush is fixed on the top of the connecting rod. One end of the connecting rod passes through the fixed plate and the side wall of the mounting frame in turn, and a limit assembly is provided to limit the rotation of the connecting rod.

[0008] Furthermore, the limit assembly includes a sliding sleeve which is sleeved on the end of the connecting rod outside the side wall of the mounting frame, and the inner wall of the sliding sleeve is provided with two symmetrically distributed sliding grooves, each of which is provided with a sliding block which is slidably matched with the sliding groove and fixed on the connecting rod, a limit plate is vertically provided on the sliding sleeve, and two slideways are provided on the outer wall of the mounting frame, and two limit rods inserted into the slideways are fixed on the limit plates corresponding to the slideways, and a universal ball bearing which is slidably matched with the slideways is provided at the end of the limit rod.

[0009] Furthermore, the guide rail is provided with two clamps fixed on the columns of the pressure testing machine body.

[0010] Furthermore, a through groove is provided at the top of the side wall of the collecting basket close to the lower pressure plate of the pressure testing machine body, and a guide plate is obliquely provided at the through groove.

[0011] Furthermore, a fixing groove is provided on the side wall in front of the mounting frame, and an observation window is installed in the fixing groove.

[0012] Furthermore, the observation window is made of transparent plastic.

[0013] Furthermore, a rubber strip is provided at the bottom of the scraper.

[0014] Furthermore, the bottom of the rubber strip is in contact with the top of the lower pressing plate of the pressure testing machine body.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The utility model installs the mounting frame on the four upright posts of the pressure testing machine body by sliding the slide rail into the guide rail, and uses the pressure testing machine body to test the compressive strength of the ultra-high performance concrete specimen. After the test, the broken pieces of the specimen remain on the lower pressure plate of the pressure testing machine body, and starting the driving component causes the scraper to reciprocate to push the broken pieces into the collection basket, which can better clean the broken pieces of the ultra-high performance concrete specimen, saves the time of manual cleaning by the staff, and improves the efficiency of the staff in testing the compressive strength of the specimen. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure of AA;

[0019] Figure 3 for Figure 1 A partial enlarged view of point B in the middle;

[0020] Figure 4 for Figure 1 Schematic diagram of the cross-sectional structure of the CC;

[0021] Figure 5 for Figure 2 A partial enlarged view of point D in the middle;

[0022] Figure 6 for Figure 1 The main view of

[0023] The names of the components in the figure are: 1. Pressure testing machine body 2. Brush 3. Fixed plate 4. Threaded rod 5. Motor 6. Mounting frame 7. Collection basket 8. Guide plate 9. Connecting rod 10. Scraper 11. Second bevel gear 12. First bevel gear 13. Observation window 14. Hoop 15. Guide rail 16. Slide rail 17. Rotating rod 18. Universal ball 19. Limit rod 20. Sleeve 21. Limit plate 22. Slider. DETAILED DESCRIPTION

[0024] The present invention is further described below through specific embodiments in conjunction with the accompanying drawings, but the present invention is not limited thereto. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

[0025] Example 1

[0026] The ultra-high performance concrete pressure detection device described in this embodiment is as follows: Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5And Figure 6 As shown, it includes the pressure testing machine body 1. On the columns of the pressure testing machine body 1, there are two guide rails 15 distributed front and back. Between the two guide rails 15, there is a mounting frame 6 in a "C" - shaped structure. The two side walls of the mounting frame 6 are distributed front and back. On the guide rails 15, there are sliding rails 16 that are slidably mated with and fixed on the mounting frame 6. On the mounting frame 6, there is a scraper 10 for cleaning the fragments on the lower platen of the pressure testing machine body 1. On the mounting frame 6, there is a driving assembly for driving the scraper 10 to scrape off the fragments. At the bottom of the mounting frame 6, there is a collection basket 7 for collecting the fragments; The pressure testing machine body 1 is a concrete pressure testing machine in the prior art, mainly used for the compressive strength test of building materials such as bricks, cement mortar, and concrete. It mainly consists of a main machine, a hydraulic system, and a force - measuring unit, etc. The main machine consists of an upper beam, columns, adjusting screws and handwheels, bearing plates, oil cylinders, and pistons, etc. There is a movable ball seat between the end of the screw and the upper platen. During operation, when the bottom surface of the upper platen contacts the test piece surface, it can automatically adapt to the slight inclination in the height direction of the test piece, making the two planes contact fully, so that the test piece is uniformly stressed. According to the size of the test piece, the handwheel and screw can be rotated to appropriately adjust the test space. There is a positioning wire frame engraved on the surface of the lower platen to facilitate placing the test piece in the center position; The hydraulic system consists of a hydraulic pump, an oil supply valve, a return oil valve, an oil tank, a filter, and oil pipes, etc. The hydraulic pump is an axial five - plunger ultra - high - pressure pump, directly driven by an electric motor. The oil supply valve is equipped with a safety valve, which can overflow during overload to play a safety role. By operating the handwheel of the oil supply valve, the oil intake of the oil cylinder can be adjusted to achieve the required loading rate. By opening the return oil valve, the oil in the oil cylinder and the oil from the oil pump can all flow back to the oil tank; The force - measuring unit mainly includes a measurement and control system, a printer, and a pressure sensor, etc.; The electrical system consists of an electric motor, a start button, a stop button, an AC contactor, a fuse, etc.; When the pressure testing machine body 1 is in use, first open the return oil valve, then close the return oil valve, turn on the power supply, press the start button, and the oil pump starts to work. Then close the return oil valve, slowly open the oil supply valve, the piston rises a certain distance, open the return oil valve, and the piston drops back to the original position. Place the test piece on the center of the lower platen according to the positioning wire frame of the test piece, and according to the size of the test piece, rotate the handwheel and screw to adjust the appropriate position of the upper platen. Turn on the power supply of the measurement and control system (the switch is behind the measurement and control box), and input relevant data such as zero - clearing and clock modification according to the operation steps. Press the start button, close the return oil valve, adjust the oil supply valve, and perform the loading test smoothly at the required rate. When the test piece is crushed and the load drops, immediately open the return oil valve to make the oil flow back to the oil tank quickly. At the end of the test, press the "print" key on the panel, and the printer can print out the test report for this time. During operation, the rising height of the lower platen shall not exceed 4 cm (or the marked line on the column) to avoid accidents. During operation, it is prohibited to place any part of the human body such as hands between the upper and lower platens, and pay attention to the fragments flying out when the test piece breaks and hurting people. Immediately remove the broken test pieces after the test for the next test;

[0027] The four columns of the pressure testing machine body 1 are distributed in a rectangle. A guide rail 15 is fixed on two rear columns, and a guide rail 15 is also fixed on two front columns. The two guide rails 15 correspond to each other. The mounting frame 6 is in a "C" - shaped structure. Slide rails 16 are arranged on both the front and rear side walls of the mounting frame 6 that are distributed front and back. Among them, the slide rail 16 is welded or adhered to the front side wall of the front side wall, and the slide rail 16 is welded or adhered to the rear side wall of the rear side wall. Slide the slide rail 16 into the guide rail 15, thereby fixing the mounting frame 6 on the columns of the pressure testing machine body 1. When the pressure testing machine body 1 detects the compressive strength of the test piece, the mounting frame 6 can block the fragments splashing when the test piece breaks, avoiding harm to the staff. Vertical scrapers 10 are arranged on both side walls of the mounting frame 6. A collection basket 7 is welded or screwed at the bottom of the left side wall of the mounting frame 6. The driving component is used to drive the scraper 10 to scrape the fragments on the lower platen of the pressure testing machine body 1 into the collection basket 7. The driving component includes an electric push rod installed on the left side wall of the mounting frame 6. The end of the push rod of the electric push rod is fixed with the scraper 10. A chute is opened on the side wall of the mounting frame 6 corresponding to the other side of the scraper 10. A slider that is in sliding fit with it and fixed on the other side of the scraper 10 is arranged in the chute. By the push rod of the electric push rod continuously extending or retracting in the slide seat, with the cooperation of the chute and the slider, the scraper 10 is driven to reciprocate above the lower platen of the pressure testing machine body 1, thereby hanging the broken fragments on the lower platen into the collection basket 7, cleaning the fragments on the lower platen, improving the work efficiency of the staff, reducing the labor intensity, and facilitating better detection of the compressive strength of the test piece;

[0028] As Figure 2 、 Figure 4 and Figure 6 shown, two clamps 14 fixed on the columns of the pressure testing machine body 1 are arranged on the guide rail 15. Two clamps 14 are welded or adhered to the guide rail 15. The clamp 14 is composed of a hoop plate, wing plates, tie - bar plates, bolts and inner liners. It is formed by the hinge of the left and right half - hoop plates after being butted together. Both the left and right half - hoop plates are in a semi - circular ring shape. The two ends of the semi - circular ring are bent outwards to form an installation ear respectively. Threaded holes are opened on the installation ears, and a bolt is inserted into the threaded hole. By fixing the clamp 14 on the columns of the pressure testing machine body 1, the guide rail 15 is fixed on the columns of the pressure testing machine body 1, facilitating the installation and disassembly of the guide rail 15, and also facilitating the installation and disassembly of the mounting frame 6. The fragments collected in the collection basket 7 can be cleaned, making it more practical;

[0029] As Figure 1 、 Figure 2 and Figure 4As shown, a through slot is provided at the top of the side wall of the collecting basket 7 close to the lower pressing plate of the pressure testing machine body 1, and a guide plate 8 is obliquely provided at the through slot. The right side wall of the collecting basket 7 is close to the lower pressing plate of the pressure testing machine body 1, and a through slot is provided at the top of the right side wall of the collecting basket 7. An inclined guide plate 8 is welded or glued to the bottom of the through slot. The fragments are poured into the collecting basket 7 through the guide plate 8. The guide plate 8 can be used to buffer the fragments entering the collecting basket 7 to avoid generating more dust when collecting the fragments.

[0030] like Figure 2 and Figure 6 As shown, a fixing groove is provided on the front side wall of the mounting frame 6, and an observation window 13 is installed in the fixing groove. A fixing groove communicating with each other is provided on the side wall in front of the mounting frame 6, and an observation window 13 is embedded in the fixing groove. The observation window 13 is made of transparent plastic, and the transparent plastic can be PC (polycarbonate) material, which has high strength and strong impact resistance, making it not easy to be damaged. The transparent material is convenient for the staff to observe the compressive strength test of the ultra-high performance concrete specimen, and is also convenient for blocking the fragments splashed after crushing.

[0031] like Figure 1 and Figure 2 As shown, a rubber strip is provided at the bottom of the scraper 10, and the bottom of the rubber strip contacts the top of the lower pressure plate of the pressure testing machine body 1. A rubber strip is adhered to the bottom of the scraper 10, and the rubber strip is soft and not easy to deform. When the rubber strip contacts the top of the lower pressure plate, when pushing the fragments on the lower pressure plate, the lower pressure plate will not be scratched, thereby protecting it.

[0032] During actual use, the slide rail 16 is slid into the guide rail 15, so that the mounting frame 6 is fixed on the column of the pressure testing machine body 1, and the pressure testing machine body 1 is used to test the compressive strength of the ultra-high performance concrete specimen. The mounting frame 6 blocks the fragments splashed when the specimen is broken to avoid harm to the staff. After the test is completed, the scraper 10 is driven by the drive component to push the broken fragments on the lower pressure plate of the pressure testing machine body 1 into the collection basket 7, without the need for manual cleaning by the staff, thereby improving the efficiency of compressive strength testing of ultra-high performance concrete specimens.

[0033] Example 2

[0034] This embodiment further illustrates the technology. Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the driving assembly includes a motor 5 installed on a mounting frame 6, and mounting grooves are provided on the mutually corresponding surfaces of the two side walls of the mounting frame 6, and freely rotatable threaded rods 4 are provided in the mounting grooves. The threaded rods 4 are each provided with adjusting nuts that are threadedly matched therewith, and the two adjusting nuts are connected through a scraper 10, one end of one of the threaded rods 4 passes through the side wall of the mounting frame 6 and is connected to the output shaft of the motor 5, and the other end of the corresponding threaded rod 4 is provided with countersunk holes on the two side walls of the mounting frame 6, and a rotating rod 17 is rotatably connected in the countersunk holes, and the first bevel gear 12 is passed through the two ends of the rotating rod 17, and the end of the threaded rod 4 The second bevel gear 11 meshing with the first bevel gear 12 is fixed on the left side wall of the mounting frame 6; the motor 5 is installed on the left side wall of the mounting frame 6, and the two side walls distributed front and back are provided with mounting grooves, wherein the rear side wall of the front side wall is provided with a mounting groove, and the front side wall of the rear side wall is provided with a mounting groove, and the two mounting grooves are rotatably connected with threaded rods 4, and the threaded rods 4 are rotatably connected with the inner wall of the mounting groove through bearings, and the threaded rods 4 are provided with adjusting nuts, and the two adjusting nuts are connected through a scraper 10, and the front side wall of the scraper 10 is welded or glued to the rear side wall of the front adjusting nut, and the rear side of the scraper 10 The wall is welded or glued to the front side wall of the adjusting nut on the rear side, and a first through hole connected to the mounting slot is opened on the left side of one of the mounting slots, and the left end of the threaded rod 4 passes through the through hole and is connected to the output shaft of the motor 5 installed on the left side wall of the mounting frame 6; countersunk holes are opened on the right sides of the two mounting slots, and a second through hole is opened between the mounting slot and the countersunk hole. The right ends of the two threaded rods 4 pass through the second through hole and are located in the countersunk holes and are fitted with a second bevel gear 11. The countersunk holes are rotatably connected with a rotating rod 17 through a bearing, and the two ends of the rotating rod 17 located in the countersunk holes are both penetrated with a first bevel gear 12, and the first bevel gear 12 and the second bevel gear 11 are connected. The wheels 11 mesh with each other. When in use, the motor 5 is started to rotate its output shaft to drive one of the threaded rods 4 to rotate. The rotation of the threaded rod 4 drives the second bevel gear 11 to rotate. The second bevel gear 11 meshes with the first bevel gear 12, thereby driving the rotating rod 17 to rotate. The rotation of the rotating rod 17 drives another threaded rod 4 to rotate in the installation groove. The rotation of the two threaded rods 4 causes the adjusting nut to reciprocate on the threaded rod 4, thereby driving the scraper 10 to scrape off the broken pieces on the upper and lower pressure plates of the pressure testing machine body 1, saving the time of the staff and facilitating the improvement of the efficiency of the compressive strength test of the ultra-high performance concrete specimens.

[0035] A fixing plate 3 is fixed on the corresponding surfaces of the two adjusting nuts, and the two fixing plates 3 are connected by a connecting rod 9. The bottom of the connecting rod 9 is connected to the top of the scraper 10, and a brush 2 is fixed to the top of the connecting rod 9. One end of the connecting rod 9 passes through the fixing plate 3 and the side wall of the mounting frame 6 in sequence, and a limiting component for limiting the rotation of the connecting rod 9 is provided. The rear side wall of the front adjusting nut is glued or welded with a fixing plate 3 of an "L"-shaped structure, and the front side wall of the rear adjusting nut is glued or welded with a fixing plate 3. The lower sections of the two fixing plates 3 are rotatably connected with the connecting rod 9 through a bearing, and a scraper 10 is welded or glued to the bottom of the connecting rod 9, and a brush 2 is welded or glued to the top of the connecting rod 9. The rear ends of the corresponding connecting rods 9 are provided with fixing holes on the fixing plate 3 and the rear side wall of the mounting frame 6. The rear end of the connecting rod 9 passes through the fixing holes on the fixing plate 3 and the fixing holes on the rear side wall of the mounting frame 6 in sequence and is located at the rear side of the mounting frame 6. A limiting component is provided on the rear end of the connecting rod 9 located at the rear side of the mounting frame 6;

[0036] The limit assembly includes a sleeve 20 which is sleeved on the end of the connecting rod 9 on the outside of the side wall of the mounting frame 6. The inner wall of the sleeve 20 is provided with two symmetrically distributed slide grooves, and the slide grooves are provided with sliders 22 which are slidably matched with the slide grooves and fixed on the connecting rod 9. A limit plate 21 is vertically provided on the sleeve 20. Two slideways are provided on the outer wall of the mounting frame 6. Two limit rods 19 inserted into the slideways are fixed on the limit plates 21 corresponding to the slideways. The end of the limit rod 19 is provided with a universal ball 18 which is slidably matched with the slideway; the rear end of the connecting rod 9 is sleeved with the sleeve 20, and the slide grooves are provided with sliders 22 which are slidably matched with the slide grooves. The two slide grooves on the inner wall of the sleeve 20 are both provided with sliders 22 fixed on the connecting rod 9, the sliding sleeve 20 is welded or glued with a limit plate 21, and the side wall behind the mounting frame 6 is provided with two slideways, the limit plate 21 is welded or glued with a limit rod 19 inserted into the slideway, and the end of the limit rod 19 is welded or glued with a universal ball 18. When in use, the threaded rod 4 rotates to drive the adjusting nut to move on the threaded rod 4, and the movement of the adjusting nut drives the fixed plate 3 and the connecting rod 9 to move, thereby driving the scraper 10 to move, pressing the lower plate of the pressure testing machine body 1 The crushed stones on the upper surface are scraped off, and when the scraper 10 scrapes off the large pieces of crushed stones on the lower pressure plate, the staff holds the limit plate 21 and moves it outward, and the limit plate 21 drives the sliding sleeve 20 to move at the rear end of the connecting rod 9. With the cooperation of the slide groove and the slider 22, the sliding sleeve 20 will not be separated from the rear end of the connecting rod 9, so that the universal ball 18 and the limit rod 19 are taken out of the slideway, and the limit plate 21 is rotated to drive the sliding sleeve 20 to rotate, and the sliding sleeve 20 drives the connecting rod 9 to rotate. The connecting rod 9 rotates so that the brush 2 on the connecting rod 9 faces downward, and the bristles of the brush 2 are in contact with the top of the lower pressure plate. The limit plate 21 and the sliding sleeve 20 are moved toward the end of the connecting rod 9, and the limit rod 19 and the universal ball 18 are inserted into the slideway to limit the connecting rod 9 to prevent it from rotating by itself. When the connecting rod 9 drives the brush 2 to clean the ashes and other residues on the lower pressure plate, the universal ball 18 slides in the slideway to make it move more smoothly. The scraper 10 and the brush 2 are used to clean the gravel and other residues on the lower pressure plate in an energy-saving manner, so that the cleaning effect is better, which is convenient for the compressive strength test of the ultra-high performance concrete specimen, and also makes the test effect more accurate.

Claims

1. An ultra-high performance concrete pressure detection device, comprising a pressure testing machine body (1), characterized in that: On the columns of the pressure testing machine body (1), there are two guide rails (15) distributed front and back. Between the two guide rails (15), there is an installation frame (6) in a "C" - shaped structure. The two side walls of the installation frame (6) are distributed front and back. On the guide rails (15), there are slide rails (16) which are in sliding fit with the guide rails and fixed on the installation frame (6). On the installation frame (6), there is a scraper (10) for cleaning the fragments on the lower platen of the pressure testing machine body (1). On the installation frame (6), there is a driving component for driving the scraper (10) to scrape off the fragments. At the bottom of the installation frame (6), there is a collection basket (7) for collecting the fragments.

2. The ultra-high performance concrete pressure detection device according to claim 1, characterized in that: The driving component includes a motor (5) installed on the installation frame (6). Installation grooves are respectively opened on the mutually corresponding surfaces of the two side walls of the installation frame (6). In the installation grooves, there are threaded rods (4) that can rotate freely. On the threaded rods (4), there are adjusting nuts that are in threaded fit with the threaded rods. The two adjusting nuts are connected by the scraper (10). One end of one of the threaded rods (4) passes through the side wall of the installation frame (6) and is connected to the output shaft of the motor (5). Corresponding to the other end of the threaded rod (4), counterbores are respectively opened on the two side walls of the installation frame (6). In the counterbores, there are rotating rods (17) rotatably connected. At both ends of the rotating rod (17), there are first bevel gears (12) sleeved. The ends of the threaded rods (4) respectively pass through the installation grooves and are fixed with second bevel gears (11) that mesh with the first bevel gears (12).

3. The ultra-high performance concrete pressure detection device according to claim 2, characterized in that: On the mutually corresponding surfaces of the two adjusting nuts, there are fixed plates (3) respectively. The two fixed plates (3) are connected by a connecting rod (9). The bottom of the connecting rod (9) is connected to the top of the scraper (10). The top of the connecting rod (9) is fixed with a brush (2). One end of the connecting rod (9) passes through the fixed plate (3) and the side wall of the installation frame (6) in sequence, and there is a limiting component for restricting the rotation of the connecting rod (9).

4. The ultra-high performance concrete pressure detection device according to claim 3 is characterized in that: The limiting component includes a sliding sleeve (20) sleeved on the end of the connecting rod (9) outside the side wall of the installation frame (6). On the inner wall of the sliding sleeve (20), there are two symmetrically distributed sliding grooves. In the sliding grooves, there are sliders (22) that are in sliding fit with the sliding grooves and fixed on the connecting rod (9). Vertically arranged on the sliding sleeve (20), there is a limiting plate (21). On the outer side wall of the installation frame (6), there are two sliding grooves. Corresponding to the sliding grooves, two limiting rods (19) inserted into the sliding grooves are fixed on the limiting plate (21). At the ends of the limiting rods (19), there are universal ball bearings (18) that are in sliding fit with the sliding grooves.

5. The ultra-high performance concrete pressure detection device according to claim 1, characterized in that: On the guide rails (15), there are two hoop - shaped clamps (14) fixed on the columns of the pressure testing machine body (1).

6. The ultra-high performance concrete pressure detection device according to claim 1, characterized in that: On the top of the side wall of the collection basket (7) close to the lower platen of the pressure testing machine body (1), there is a through - slot. At the through - slot, there is an inclined guide plate (8) arranged.

7. The ultra-high performance concrete pressure detection device according to claim 1, characterized in that: On the front side wall of the installation frame (6), there is a fixed slot, and an observation window (13) is installed in the fixed slot.

8. The ultra-high performance concrete pressure detection device according to claim 7, characterized in that: The observation window (13) is made of transparent plastic.

9. The ultra-high performance concrete pressure detection device according to claim 1, characterized in that: At the bottom of the scraper (10), there is a rubber strip.

10. The ultra-high performance concrete pressure detection device according to claim 9, characterized in that: The bottom of the rubber strip is in contact with the top of the lower platen of the pressure testing machine body (1).

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