Ultra-high performance concrete self-constriction detection equipment

Abstract

The invention discloses ultra-high-performance concrete self-constriction detection equipment, and relates to the technical field of ultra-high-performance concrete detection.The ultra-high-performance concrete self-constriction detection equipment comprises a detection mechanism, an auxiliary mechanism is arranged on the detection mechanism and comprises a rectangular plate and an L-shaped plate, a sliding groove is formed in the top of the rectangular plate, a motor is installed on one side of the rectangular plate, and the motor is connected with the L-shaped plate; according to the ultra-high-performance concrete self-constriction detection equipment, by arranging the auxiliary mechanism, the ultra-high-performance concrete self-constriction detection equipment can have the function of automatically vibrating detected ultra-high-performance concrete, so that the situation that workers need to manually vibrate the detected ultra-high-performance concrete is avoided; the use effect of the ultra-high performance concrete self-constriction detection equipment is improved, and meanwhile, the use efficiency of the ultra-high performance concrete self-constriction detection equipment is also improved.

Description

Technical Field

[0001] The invention relates to the technical field of ultra-high performance concrete detection, in particular to an ultra-high performance concrete self-shrinkage detection device. Background Art

[0002] Ultra-high performance concrete is a new type of cement-based composite material with ultra-high strength, high toughness and high durability. It is widely used in bridge engineering, high-rise buildings and marine engineering. Due to the extremely low water-cement ratio of ultra-high performance concrete, insufficient cement hydration will occur, which will have inconsistent effects on the shrinkage performance of concrete. In order to ensure the consistency and reliability of the quality of construction projects, the ultra-high performance concrete used is generally subjected to self-shrinkage detection operations. At this time, ultra-high performance concrete self-shrinkage detection equipment is needed.

[0003] When the existing ultra-high performance concrete shrinkage detection equipment is used, although it can obtain the shrinkage data of the ultra-high performance concrete in advance, thereby preventing the occurrence of cracks during its actual use, it does not have the function of automatically vibrating the ultra-high performance concrete being tested, that is, during the test piece preparation process of the ultra-high performance concrete shrinkage detection equipment, the staff is generally required to slowly pour the prepared ultra-high performance concrete into the prepared mold and manually vibrate to remove the bubbles in the ultra-high performance concrete in the mold. When the staff manually vibrates, it is difficult to ensure that the concrete in the entire mold is vibrated uniformly, which can easily lead to uneven internal structure of the concrete specimen, and then easily lead to differences in the shrinkage performance of different parts of the concrete in the mold, which in turn can easily affect the accuracy and reliability of the test results, which not only reduces the use effect of the ultra-high performance concrete shrinkage detection equipment, but also reduces the use efficiency of the ultra-high performance concrete shrinkage detection equipment.

[0004] Therefore, we propose an ultra-high performance concrete shrinkage detection device to solve the problems raised in the above background technology. Summary of the invention

[0005] The purpose of the present invention is to provide an ultra-high performance concrete self-shrinkage detection device to solve the problem that the existing ultra-high performance concrete self-shrinkage detection device does not have the function of automatically vibrating the ultra-high performance concrete to be detected, that is, during the test piece making process, the ultra-high performance concrete self-shrinkage detection device requires staff to manually perform vibration operations, which makes it difficult to ensure that the concrete in the entire mold can be evenly vibrated, which can easily lead to uneven internal structure of the concrete specimen, and then easily lead to differences in the self-shrinkage performance of different parts of the concrete in the mold, which in turn can easily affect the accuracy and reliability of the test results, thereby reducing the use effect of the ultra-high performance concrete self-shrinkage detection device and also reducing the use efficiency of the ultra-high performance concrete self-shrinkage detection device.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solutions: an ultra-high performance concrete shrinkage detection device, comprising a detection mechanism, wherein an auxiliary mechanism is provided on the detection mechanism; The auxiliary mechanism includes a rectangular plate and an L-shaped plate, a slide groove is provided on the top of the rectangular plate, a motor is installed on one side of the rectangular plate, a slider is slidably connected inside the slide groove, a threaded rod is movably penetrated on the other side of the rectangular plate, a servo electric cylinder is installed on the top of the L-shaped plate, a mounting block is installed on one end of the telescopic end of the servo electric cylinder, a vibrator is installed on the top of the mounting block, four rectangular blocks are installed on the top of the slider and the bottom of the L-shaped plate, four of which are fixed with round tubes on the top of the four rectangular blocks, and another four of which are fixed with T-shaped rods on the bottom, and springs are installed on the top of the four rectangular blocks.

[0007] Preferably, one end of the threaded rod movably penetrates one side of the inner wall of the slide groove, one end of the threaded rod is installed with the output end of the motor, the other end of the threaded rod is threadedly penetrated through one side of the slider, and one end of the telescopic end of the servo electric cylinder movably penetrates the top of the L-shaped plate.

[0008] Preferably, the bottom end of the vibrator movably passes through the top of the mounting block, the bottom end of each T-shaped rod is movably sleeved inside each round tube, each round tube is movably sleeved inside each spring, each T-shaped rod is movably sleeved inside each spring, and the top ends of the four springs are respectively mounted on the bottoms of the other four rectangular blocks.

[0009] Preferably, the detection mechanism comprises a workbench, a controller is installed on the top of the workbench, a data processor is placed on the top of the workbench, a shell is fixed on the top of the workbench, and two symmetrical U-shaped frames are slidably connected to the top of the shell.

[0010] Preferably, a first hand-tightened bolt is threaded through the front surface of each U-shaped frame and the rear surface of each U-shaped frame, a rectangular hole is opened on the top of each U-shaped frame, a porous plate is movably mounted inside each rectangular hole, a reflective bull's eye is fixedly embedded on opposite sides of the two porous plates, and a mounting frame is slidably connected to the top of the shell.

[0011] Preferably, two symmetrical second hand-tightened bolts are threaded through the front surface of each mounting bracket and the rear surface of each mounting bracket, two symmetrical pads are fixed on the lower side of the two mounting brackets, and laser displacement sensors are installed on the top of the two mounting brackets.

[0012] Preferably, the lower side of each U-shaped frame contacts the top of the shell, the threaded end of each first hand-tightening bolt abuts against the outer surface of the shell, and the threaded end of each second hand-tightening bolt abuts against the outer surface of the shell.

[0013] Preferably, the bottom of each of the porous plates contacts the bottom of the inner wall of the shell, the bottom of each of the cushion blocks contacts the top of the shell, and the two mounting frames are located between the two U-shaped frames.

[0014] Preferably, the two laser displacement sensors are electrically connected to the data processor, and the detection probes of the two laser displacement sensors are respectively on the same horizontal line with the centers of the two reflective target centers.

[0015] Preferably, the bottom of the rectangular plate is fixed to the top of the workbench, the vibrating end of the vibrator is above the shell, the motor is electrically connected to the controller, the servo electric cylinder is electrically connected to the controller, and the vibrator is electrically connected to the controller.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention can enable the ultra-high performance concrete self-shrinkage detection device to have the function of automatically vibrating the detected ultra-high performance concrete by arranging an auxiliary mechanism, thereby avoiding the situation where the staff needs to manually perform the vibration operation, thereby affecting the accuracy and reliability of the detection result. It not only improves the use effect of the ultra-high performance concrete self-shrinkage detection device, but also improves the use efficiency of the ultra-high performance concrete self-shrinkage detection device. With the cooperation of the started motor and the threaded rod, the slider can be driven to move inside the slide groove. With the cooperation of the started servo electric cylinder and the mounting block, the vibrator can be driven to move vertically. With the cooperation of eight rectangular blocks, four springs, four round tubes and four T-shaped rods, the influence of the vibration generated by the vibrator on the slider can be avoided.

[0017] 2. The present invention can perform self-shrinkage detection operation on ultra-high performance concrete by vertically arranging the detection mechanism. The laser displacement sensor can be fixed on the shell by the cooperation of the mounting frame and the second hand-tightening bolt. The porous plate can be prevented from tilting inside the shell by the cooperation of the U-shaped frame, the rectangular hole and the first hand-tightening bolt. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A stereoscopic diagram of an ultra-high performance concrete shrinkage detection device according to the present invention; Figure 2 A three-dimensional diagram of an ultra-high performance concrete shrinkage detection device according to the present invention from another angle; Figure 3It is a structural schematic diagram of an ultra-high performance concrete shrinkage detection device of the present invention; Figure 4 It is a partial three-dimensional diagram of the detection mechanism of an ultra-high performance concrete self-shrinkage detection device of the present invention; Figure 5 It is a partially cutaway stereoscopic view of an auxiliary mechanism of an ultra-high performance concrete self-shrinkage detection device of the present invention; Figure 6 It is a partially cutaway stereoscopic view from another angle of the auxiliary mechanism of the ultra-high performance concrete self-shrinkage detection device of the present invention; Figure 7 It is a partial three-dimensional diagram from another angle of the detection mechanism of the ultra-high performance concrete self-shrinkage detection device of the present invention; Figure 8 The present invention is a schematic diagram of the three-dimensional structure of a U-shaped frame, a first hand-tightened bolt and a rectangular hole of an ultra-high performance concrete self-shrinkage detection device.

[0019] In the figure: 1. detection mechanism; 101. workbench; 102. controller; 103. data processor; 104. housing; 105. U-shaped frame; 106. first hand-tightened bolt; 107. rectangular hole; 108. porous plate; 109. reflective bull's eye; 110. mounting frame; 111. second hand-tightened bolt; 112. pad; 113. laser displacement sensor; 2. auxiliary mechanism; 201. rectangular plate; 202. slide; 203. motor; 204. slider; 205. threaded rod; 206. L-shaped plate; 207. servo electric cylinder; 208. mounting block; 209. vibrator; 210. rectangular block; 211. round tube; 212. T-shaped rod; 213. spring. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Example 1: Please refer to Figure 1-Figure 6 As shown, the present invention provides a technical solution: an ultra-high performance concrete self-shrinkage detection device, comprising a detection mechanism 1, on which an auxiliary mechanism 2 is arranged; The auxiliary mechanism 2 includes a rectangular plate 201 and an L-shaped plate 206. A slide groove 202 is provided on the top of the rectangular plate 201. A motor 203 is installed on one side of the rectangular plate 201. A slider 204 is slidably connected inside the slide groove 202. A threaded rod 205 is movably penetrated on the other side of the rectangular plate 201. A servo electric cylinder 207 is installed on the top of the L-shaped plate 206. A mounting block 208 is installed on one end of the telescopic end of the servo electric cylinder 207. A vibration The top of the slider 204 and the bottom of the L-shaped plate 206 are each equipped with four rectangular blocks 210, wherein the tops of the four rectangular blocks 210 are each fixed with a round tube 211, and the bottoms of the other four rectangular blocks 210 are each fixed with a T-shaped rod 212, wherein the tops of the four rectangular blocks 210 are each equipped with a spring 213, one end of the threaded rod 205 movably penetrates one side of the inner wall of the slide groove 202, and one end of the threaded rod 205 is installed with the output end of the motor 203, and the threaded rod 205 is installed with the output end of the motor 203. 5 is threadedly passed through one side of the slider 204, one end of the telescopic end of the servo electric cylinder 207 is movably passed through the top of the L-shaped plate 206, the bottom end of the vibrator 209 is movably passed through the top of the mounting block 208, the bottom end of each T-shaped rod 212 is movably sleeved inside each round tube 211, each round tube 211 is movably sleeved inside each spring 213, each T-shaped rod 212 is movably sleeved inside each spring 213, the top ends of the four springs 213 are respectively installed with the bottoms of the other four rectangular blocks 210, the controller 102 is installed on the top of the workbench 101, the shell 104 is fixed on the top of the workbench 101, the bottom of the rectangular plate 201 is fixed to the top of the workbench 101, the vibrating end of the vibrator 209 is above the shell 104, the motor 203 is electrically connected to the controller 102, the servo electric cylinder 207 is electrically connected to the controller 102, and the vibrator 209 is electrically connected to the controller 102.

[0022] In this embodiment, when the ultra-high performance concrete inside the shell 104 needs to be vibrated, the controller 102 is first connected to the external power supply, and then the motor 203 is started by the controller 102. At this time, the started motor 203 will drive the slider 204 to move horizontally inside the slide groove 202 under the cooperation of the threaded rod 205 and the rectangular plate 201, and the horizontally moving slider 204 will move horizontally in the cooperation of the four groups of rectangular blocks 210, the four round tubes 211, the four T-shaped rods 212 and the four springs 213. The L-shaped plate 206 is driven to move horizontally, and the L-shaped plate 206 that moves horizontally will drive the vibrator 209 to move horizontally with the cooperation of the servo electric cylinder 207 and the mounting block 208. When the bottom end of the vibrator 209 moves to a suitable position (a suitable position above the housing 104), the controller 102 is used to first turn off the motor 203 and then start the vibrator 209. At this time, the turned-off motor 203 will stop the vibrator 209 from moving horizontally with the cooperation of the above-mentioned components, and the started vibrator 209 will stop moving horizontally. The actuator 209 will make its bottom end vibrate, and then the controller 102 will be used to start the servo electric cylinder 207. At this time, the started servo electric cylinder 207 will drive the started vibrator 209 to move vertically downward under the cooperation of the mounting block 208 and the L-shaped plate 206. When the bottom end of the vibrator 209 enters the ultra-high performance concrete inside the shell 104, the ultra-high performance concrete inside the shell 104 can be vibrated. When the bottom end of the vibrator 209 moves to a suitable position (according to actual conditions), the controller 102, the servo electric cylinder 207 and the mounting block 208 are used to make the vibrator 209 move vertically upward until the vibrator 209 is reset to its original position. Then, according to the above operation steps, the ultra-high performance concrete in other parts of the shell 104 can be vibrated. When the ultra-high performance concrete inside the shell 104 completes the vibration operation, the vibrator 209 is reset to the initial position by the cooperation of the above components, that is, the vibration operation of the ultra-high performance concrete is completed.

[0023] Embodiment 2: According to Figure 1-Figure 4 , Figure 7 and Figure 8As shown, the detection mechanism 1 includes a workbench 101, a controller 102 is installed on the top of the workbench 101, a data processor 103 is placed on the top of the workbench 101, a shell 104 is fixed on the top of the workbench 101, and two symmetrical U-shaped frames 105 are slidably connected to the top of the shell 104, and the front surface of each U-shaped frame 105 and the rear surface of each U-shaped frame 105 are threadedly penetrated with a first hand-tightening bolt 106, and the top of each U-shaped frame 105 is opened with a rectangular hole 107, and the interior of each rectangular hole 107 is movably sleeved with a porous plate 108, and the opposite sides of the two porous plates 108 are fixedly embedded with a reflective bull's eye 109, and the top of the shell 104 is slidably connected to a mounting frame 110, and the front surface of each mounting frame 110 and the rear surface of each mounting frame 110 are threadedly penetrated with two symmetrical second hand-tightening bolts 111 Two symmetrical pads 112 are fixed to the lower side of the two mounting frames 110, and laser displacement sensors 113 are installed on the top of the two mounting frames 110. The lower side of each U-shaped frame 105 contacts the top of the shell 104, the threaded end of each first hand-tightening bolt 106 abuts against the outer surface of the shell 104, and the threaded end of each second hand-tightening bolt 111 abuts against the outer surface of the shell 104. The bottom of each porous plate 108 contacts the bottom of the inner wall of the shell 104, and the bottom of each pad 112 contacts the top of the shell 104. The two mounting frames 110 are located between the two U-shaped frames 105. The two laser displacement sensors 113 are electrically connected to the data processor 103, and the detection probes of the two laser displacement sensors 113 are respectively on the same horizontal line with the center of the two reflective bull's eyes 109.

[0024] In this embodiment, when it is necessary to perform a self-shrinkage test on the ultra-high performance concrete, the workbench 101 is first moved to a constant temperature and humidity laboratory, and then the controller 102 and the data processor 103 are connected to an external power supply, and then all the second hand-tightening bolts 111 are loosened, and then the two mounting frames 110 are moved away. At this time, the two moving mounting frames 110 will drive the corresponding laser displacement sensor 113, the corresponding second hand-tightening bolt 111 and the corresponding pad 112 to move, and then the prepared ultra-high performance concrete is injected into the shell 104. When the interior of the shell 104 When the ultra-high performance concrete is filled, the bottom ends of the two porous plates 108 are submerged by the ultra-high performance concrete inside the shell 104. Then, the ultra-high performance concrete inside the shell 104 is vibrated by the prepared vibrating rod, and then the excess ultra-high performance concrete on the top of the shell 104 is scraped off by the prepared scraper, so that the top of the ultra-high performance concrete inside the shell 104 is on the same horizontal plane as the top of the shell 104. Then, all the first hand-tightening bolts 106 are loosened, and then the two U-shaped frames 105 are vertically moved upward. At this time, the two moving U-shaped frames 105 will drive the corresponding first The hand-tightening bolts 106 are moved together. When the two perforated plates 108 are not in contact with the inner walls of the corresponding rectangular holes 107, the two U-shaped frames 105 can be directly removed, and then the two mounting frames 110 are reset and moved. At this time, the two moving mounting frames 110 will drive the corresponding pads 112 and the corresponding laser displacement sensors 113 to move. When the two mounting frames 110 are reset to their original positions, all the second hand-tightening bolts 111 are tightened first, and then the data processor 103 is started. Then, with the cooperation of the data processor 103, the two laser displacement sensors 113 are started at the same time. 3. At this time, the two activated laser displacement sensors 113 will continuously measure the distance between them and the corresponding porous plate 108 with the cooperation of the corresponding reflective target 109, and transmit the measured distance data to the data processor 103 in the form of electrical signals. At this time, the data processor 103 will store the distance data received each time. When the ultra-high performance concrete inside the shell 104 is completely contracted, the self-contraction detection operation of the ultra-high performance concrete can be completed with the cooperation of the two laser displacement sensors 113, the two porous plates 108, the two reflective target 109 and the data processor 103.

[0025] The effect and working principle of the whole mechanism are as follows: when it is necessary to perform self-shrinkage detection on ultra-high performance concrete (C120-150), the workbench 101 is first moved to a constant temperature and humidity laboratory, and then the controller 102 and the data processor 103 are connected to the external power supply, and then all the second hand-tightening bolts 111 are loosened, and then the two mounting frames 110 are moved away. At this time, the two moving mounting frames 110 will drive the corresponding laser displacement sensors 113, the corresponding second hand-tightening bolts 111 and the corresponding pads 112 to move, and then the prepared ultra-high performance concrete is injected into the shell 104. When the shell 104 is filled with ultra-high performance concrete, the two porous plates 1 08 are all submerged in the ultra-high performance concrete inside the shell 104, and then the controller 102 is used to start the motor 203. At this time, the started motor 203 will drive the slider 204 to move horizontally inside the slide 202 with the cooperation of the threaded rod 205 and the rectangular plate 201, and the horizontally moving slider 204 will drive the L-shaped plate 206 to move horizontally with the cooperation of four groups of rectangular blocks 210, four round tubes 211, four T-shaped rods 212 and four springs 213. At the same time, the horizontally moving L-shaped plate 206 will drive the vibrator 209 to move horizontally with the cooperation of the servo electric cylinder 207 and the mounting block 208. When the bottom end of the vibrator 209 moves to a suitable position (a suitable position above the shell 104), At this time, the controller 102 is used to first turn off the motor 203, and then start the vibrator 209. At this time, the turned-off motor 203 will stop the horizontal movement of the vibrator 209 under the cooperation of the above-mentioned components, and the started vibrator 209 will vibrate its bottom end. Then, the controller 102 is used to start the servo electric cylinder 207. At this time, the started servo electric cylinder 207 will drive the started vibrator 209 to move vertically downward under the cooperation of the mounting block 208 and the L-shaped plate 206. When the bottom end of the vibrator 209 enters the ultra-high performance concrete inside the shell 104, the ultra-high performance concrete inside the shell 104 can be vibrated. When the bottom end of the vibrator 209 moves to a suitable position (depending on the actual situation), At this time, the controller 102, the servo electric cylinder 207 and the mounting block 208 are used to cooperate to make the vibrator 209 move vertically upward until the vibrator 209 is reset to its original position, and then the above-mentioned operation steps are followed to vibrate the ultra-high performance concrete in other parts of the shell 104. When the ultra-high performance concrete in the shell 104 is vibrated, the vibrator 209 is reset to its initial position by using the cooperation of the above-mentioned components, and then the excess ultra-high performance concrete on the top of the shell 104 is scraped off with the prepared scraper, so that the top of the ultra-high performance concrete in the shell 104 is on the same horizontal plane as the top of the shell 104, and then all the first hand-tightened bolts 106 are loosened.Then, the two U-shaped frames 105 are moved vertically upward, and the two movable U-shaped frames 105 will drive the corresponding first hand-tightening bolts 106 to move together. When the two porous plates 108 are not in contact with the inner walls of the corresponding rectangular holes 107, the two U-shaped frames 105 can be directly moved away, and then the two mounting frames 110 are reset and moved. At this time, the two movable mounting frames 110 will drive the corresponding pads 112 and the corresponding laser displacement sensors 113 to move. When the two mounting frames 110 are reset to their original positions, all the second hand-tightening bolts 111 are tightened first, and then the data processor 103 is started, and then the data processor 103 is used to 3, and simultaneously start the two laser displacement sensors 113. At this time, the two started laser displacement sensors 113 will continuously measure the distance between them and the corresponding porous plate 108 with the cooperation of the corresponding reflective bull's eye 109, and transmit the measured distance data to the data processor 103 in the form of electrical signals. At this time, the data processor 103 will store the distance data received each time. When the ultra-high performance concrete inside the shell 104 is completely contracted, the self-contraction detection operation of the ultra-high performance concrete can be completed with the cooperation of the two laser displacement sensors 113, the two porous plates 108, the two reflective bull's eyes 109 and the data processor 103.

[0026] One side of one of the porous plates 108 and one side of one of the reflective bull's eye 109 are in the same plane, and the side of the other porous plate 108 close to the controller 102 and the side of the other reflective bull's eye 109 close to the controller 102 are in the same plane.

[0027] Among them, the controller 102 (PLC controller), the data processor 103, the motor 203, the servo electric cylinder 207 and the laser displacement sensor 113 are all existing technologies, and their working principles are all public technologies. Their models can be selected according to actual conditions and no further explanation is given here.

[0028] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An ultra-high performance concrete shrinkage detection device, characterized in that: It comprises a detection mechanism (1), wherein the detection mechanism (1) is provided with an auxiliary mechanism (2); The auxiliary mechanism (2) comprises a rectangular plate (201) and an L-shaped plate (206); a slide groove (202) is provided on the top of the rectangular plate (201); a motor (203) is installed on one side of the rectangular plate (201); a slider (204) is slidably connected to the inside of the slide groove (202); a threaded rod (205) is movably penetrated on the other side of the rectangular plate (201); a servo electric cylinder (207) is installed on the top of the L-shaped plate (206); and the servo electric cylinder (207) A mounting block (208) is installed at one end of the telescopic end, a vibrator (209) is installed on the top of the mounting block (208), four rectangular blocks (210) are installed on the top of the slider (204) and the bottom of the L-shaped plate (206), round tubes (211) are fixed on the tops of the four rectangular blocks (210), and T-shaped rods (212) are fixed on the bottoms of the other four rectangular blocks (210), and springs (213) are installed on the tops of the four rectangular blocks (210).

2. The ultra-high performance concrete shrinkage detection device according to claim 1, characterized in that: One end of the threaded rod (205) movably penetrates one side of the inner wall of the slide groove (202), one end of the threaded rod (205) is installed with the output end of the motor (203), the other end of the threaded rod (205) is threadedly penetrated one side of the slider (204), and one end of the telescopic end of the servo electric cylinder (207) movably penetrates the top of the L-shaped plate (206).

3. The ultra-high performance concrete shrinkage detection device according to claim 1 is characterized in that: The bottom end of the vibrator (209) movably penetrates the top of the mounting block (208), the bottom end of each T-shaped rod (212) is movably sleeved inside each round tube (211), each round tube (211) is movably sleeved inside each spring (213), each T-shaped rod (212) is movably sleeved inside each spring (213), and the top ends of the four springs (213) are respectively mounted on the bottoms of the other four rectangular blocks (210).

4. The ultra-high performance concrete shrinkage detection device according to claim 1, characterized in that: The detection mechanism (1) comprises a workbench (101), a controller (102) is installed on the top of the workbench (101), a data processor (103) is placed on the top of the workbench (101), a shell (104) is fixed on the top of the workbench (101), and two symmetrical U-shaped frames (105) are slidably connected to the top of the shell (104).

5. The ultra-high performance concrete shrinkage detection device according to claim 4, characterized in that: A first hand-tightened bolt (106) is threadedly penetrated through the front surface of each U-shaped frame (105) and the rear surface of each U-shaped frame (105); a rectangular hole (107) is opened at the top of each U-shaped frame (105); a porous plate (108) is movably sleeved inside each rectangular hole (107); a reflective bull's eye (109) is fixedly embedded on opposite sides of two porous plates (108); and a mounting frame (110) is slidably connected to the top of the housing (104).

6. The ultra-high performance concrete shrinkage detection device according to claim 5, characterized in that: Two symmetrical second hand-tightened bolts (111) are threadedly penetrated on the front surface of each mounting frame (110) and the rear surface of each mounting frame (110); two symmetrical cushion blocks (112) are fixed to the lower sides of the two mounting frames (110); and laser displacement sensors (113) are installed on the tops of the two mounting frames (110).

7. The ultra-high performance concrete shrinkage detection device according to claim 6, characterized in that: The lower side of each U-shaped frame (105) contacts the top of the shell (104), the threaded end of each first hand-tightening bolt (106) abuts against the outer surface of the shell (104), and the threaded end of each second hand-tightening bolt (111) abuts against the outer surface of the shell (104).

8. The ultra-high performance concrete shrinkage detection device according to claim 6, characterized in that: The bottom of each porous plate (108) contacts the bottom of the inner wall of the shell (104), the bottom of each cushion block (112) contacts the top of the shell (104), and the two mounting frames (110) are located between the two U-shaped frames (105).

9. The ultra-high performance concrete shrinkage detection device according to claim 6, characterized in that: The two laser displacement sensors (113) are both electrically connected to the data processor (103), and the detection probes of the two laser displacement sensors (113) are respectively located on the same horizontal line as the centers of the two reflective bull's eyes (109).

10. The ultra-high performance concrete shrinkage detection device according to claim 4, characterized in that: The bottom of the rectangular plate (201) is fixed to the top of the workbench (101), the vibration end of the vibrator (209) is located above the housing (104), the motor (203) is electrically connected to the controller (102), the servo electric cylinder (207) is electrically connected to the controller (102), and the vibrator (209) is electrically connected to the controller (102).

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