Fabricated building grouting hole quality detection device and detection method thereof

Abstract

This invention discloses a quality testing device for grouting holes in prefabricated buildings, comprising: a main unit, including a base and a support frame that matches the base; a hydraulic cylinder is fixedly installed at the top of the inner wall of the support frame; when the pressure plate moves down, the bidirectional screw is driven to rotate via a toothed plate, activating an electric latch; the latch inserts into a sliding groove, causing the slide to move towards the center, which in turn causes a limiting plate to clamp the sample; simultaneously, the electric latch retracts, causing the slide to rotate within the connecting frame, stopping the movement of the moving block, ensuring stable clamping of the sample and preventing displacement or deformation from affecting the test results; simultaneously, when the bidirectional screw rotates, it also drives the connecting rod and the sliding rod, causing the cleaning block to clean the testing platform, ensuring no debris affects the test; when the left slider reaches the leftmost end, the right slider is pulled by a rope, causing the two sets of cleaning blocks to move relative to each other, clamping both sides of the limiting plate, enhancing clamping stability and avoiding insufficient clamping force.

Description

Technical Field

[0001] This invention relates to the field of borehole sampling and testing technology, and in particular to a device and method for testing the quality of grouting holes in prefabricated buildings. Background Technology

[0002] With the continuous development of prefabricated building technology, more and more buildings are beginning to adopt this technology for construction. After construction is completed, it is necessary to drill holes and take samples of the concrete at the grouting joints of the prefabricated components to test the strength of the concrete core samples, in order to ensure the reliability of the prefabricated building.

[0003] After core sampling, the sample needs to be placed on the testing device for testing. During pressure testing, the sample usually needs to be limited. The main purpose of limiting is to ensure that the sample remains stable during the test and avoids accidental displacement or deformation, which would affect the accuracy of the test results. At the same time, if the sample placed on the testing table fails the test, it will break, resulting in debris on the testing table. This debris may cause uneven stress on the next sample to be tested, causing additional pressure on certain parts, leading to concrete breakage or damage in those parts. This damage will interfere with the normal pressure testing process, making the test results inaccurate. Summary of the Invention

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0005] In view of the problems existing in the above-mentioned prefabricated building grouting hole quality detection device and detection method, the present invention is proposed.

[0006] Therefore, the purpose of this invention is to provide a quality testing device and method for grouting holes in prefabricated buildings. It is applicable to solving the problems that after core sampling, the sample needs to be limited to ensure stability during pressure testing to avoid displacement or deformation affecting the results. The debris generated after the unqualified sample breaks may interfere with the next test, causing uneven local stress and inaccurate results.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a quality detection device for grouting holes in prefabricated buildings, comprising:

[0008] The main unit includes a base and a support frame that matches and is installed on the base. A hydraulic cylinder is fixedly installed on the top of the inner wall of the support frame, and a pressure plate is installed on the bottom of the hydraulic cylinder. A connecting plate is fixedly installed on the top of the pressure plate, and a toothed plate is fixedly installed on one side of the connecting plate. A detection platform is provided on the top of the base.

[0009] The limiting unit includes a connecting frame fixedly installed on both sides of the testing platform. A bidirectional lead screw is rotatably connected to the inner wall of the supporting frame, and the bidirectional lead screw passes through one side of the testing platform and the connecting frame. A gear is fixedly installed on the outer surface of the bidirectional lead screw near the toothed plate, and the gear meshes with the toothed plate. A slide seat is provided in the inner cavity of the connecting frame, and the slide seat is threadedly connected to the bidirectional lead screw. An electric pin is provided at both ends of the slide seat. A first sliding groove is opened on both sides of the inner cavity of the connecting frame, and the first sliding groove is slidably connected to the electric pin. Movable blocks are slidably connected to both ends of the bidirectional lead screw, and the surfaces of the movable blocks are in contact with each other. An L-shaped rod is fixedly installed on the top of each movable block, and a limiting plate is fixedly installed on the opposite surfaces of the two sets of L-shaped rods.

[0010] As a preferred embodiment of the prefabricated building grouting hole quality inspection device of the present invention, the inspection device further includes a cleaning unit, which includes four sets of first support plates fixedly installed on the top of the base. Reciprocating screws and sliding rods are respectively installed on the opposite surfaces of the four sets of first support plates, and the reciprocating screws and sliding rods are connected. Worm gears are installed on the outer surfaces of one end of each of the two sets of sliding rods, and worms are provided at the bottom ends of the worm gears. Slider blocks are provided on the outer surfaces of one end of the reciprocating screw and one end of the sliding rod, and the sliders are threadedly connected to the reciprocating screw. The sliders and sliding rods are slidably connected. Ropes are installed on the opposite surfaces of the sliders, and cleaning blocks are fixedly installed on the opposite surfaces of the sliders.

[0011] As a preferred embodiment of the prefabricated building grouting hole quality detection device of the present invention, the base has a second support plate fixedly installed on both sides of the top end, and a connecting rod is rotatably connected to the opposite surface of the second support plate. The outer surface of the connecting rod is connected to two sets of worm gears, and the connecting rod and the bidirectional lead screw are connected by a transmission structure.

[0012] As a preferred embodiment of the prefabricated building grouting hole quality detection device of the present invention, the transmission structure includes a second transmission wheel and a first transmission wheel respectively fixedly installed on the outer surfaces of the connecting rod and the bidirectional lead screw, and the outer surfaces of the second transmission wheel and the first transmission wheel are sleeved with transmission belts.

[0013] As a preferred embodiment of the prefabricated building grouting hole quality detection device of the present invention, the outer surfaces of the two sets of sliding rods are provided with limit blocks, and a guide rod is fixedly installed on one side of the limit block, and the guide rod and the slider are slidably connected.

[0014] In a preferred embodiment of the prefabricated building grouting hole quality inspection device of the present invention, the distance the slider moves on the slide rod is one-quarter of the distance the slider moves on the surface of the reciprocating screw, and the length of the rope is equal to the distance the left slider moves to the left end of the reciprocating screw. The distance the slider moves on the slide rod is equal to the distance the two sets of limiting plates move together.

[0015] As a preferred embodiment of the prefabricated building grouting hole quality inspection device of the present invention, the inspection device further includes an auxiliary unit, which includes a U-shaped plate fixedly installed on the opposite sides of two sets of cleaning blocks. A mounting frame is fixedly installed on one side of the U-shaped plate, and a rotating rod is fixedly installed in the middle of the mounting frame. Clamping blocks are movably connected to both sides of the surface of the rotating rod.

[0016] As a preferred embodiment of the prefabricated building grouting hole quality detection device of the present invention, wherein: a telescopic spring is fixedly installed between the clamping block and the U-shaped plate, and the number of telescopic springs is several.

[0017] As a preferred embodiment of the prefabricated building grouting hole quality detection device of the present invention, wherein: the top of both sets of connecting frames are provided with a second sliding groove, and the second sliding groove and the L-shaped rod are slidably connected.

[0018] This invention further provides a method for detecting the quality of grouting holes in prefabricated buildings, applicable to the aforementioned detection device, and specifically includes the following steps:

[0019] S1: The core sampler is used to drill and sample the target structure. The sample to be tested is placed on the top of the test platform. The hydraulic cylinder retractable pressure plate and the connecting plate move up and down. When the connecting plate moves, it will drive the toothed plate to move down. The toothed plate drives the bidirectional screw to rotate through the gear. The bidirectional screw drives the connecting rod to rotate synchronously through the transmission structure. The worm and worm wheel drive the slide bar and the reciprocating screw to rotate synchronously.

[0020] S2: When the reciprocating screw rotates, the slider on the left moves to the left. The slider drives the cleaning block to clean the surface of the testing stage. When the slider has moved more than half the distance on the surface of the reciprocating screw, the electric latch is activated. The latch inserts into the first slide groove to limit the slide block, causing the two sets of slide blocks to move towards the middle of the testing stage, pushing the movable block to move until the movable block drives the two sets of limit plates to clamp and limit the sample. At the same time, the latch of the electric latch retracts, and the slide block will rotate in the inner cavity of the connecting frame and no longer push the movable block to move.

[0021] S3: When the slider moves to the leftmost end on the surface of the reciprocating screw, the left slider pulls the right slider to the surface of the reciprocating screw through the rope. Due to the setting of the reciprocating screw, the two sets of cleaning blocks move relative to each other. The cleaning blocks clamp the two sides of the limit plate through the auxiliary unit, which strengthens the stability of the limit plate clamping and avoids insufficient clamping force.

[0022] S4: The pressure plate moves up and down to apply top pressure to the sample. A preset top pressure test force can be applied to the sample to be tested through the pressure plate. If the sample can withstand the preset top pressure, the sample's compressive strength is deemed qualified; otherwise, it is unqualified. After the test, the pressure plate is reset, the limit unit returns to its position, and when the two sets of cleaning blocks move relative to each other to the two ends of the reciprocating screw, the left cleaning block moves to the right, the right block moves slightly and stops on the surface of the slide bar, and the left slider moves to the right end of the reciprocating screw, ready for the next operation.

[0023] The beneficial effects of this invention are:

[0024] 1. The pressure plate moves down, and the connecting plate drives the toothed plate to rotate the bidirectional lead screw, which activates the electric latch. The latch inserts into the slide groove, causing the slide to move towards the center and push the movable block until the movable block drives the limit plate to clamp the sample. At the same time, the electric latch retracts, and the slide rotates within the connecting frame, stopping the push of the movable block. This ensures stable clamping of the sample and prevents displacement or deformation from affecting the test results.

[0025] 2. When the bidirectional lead screw rotates, the transmission structure causes the connecting rod to rotate synchronously. The worm and worm wheel drive the slide bar and reciprocating lead screw to rotate. The left slider moves to the left, and the cleaning block cleans the surface of the test table to ensure that no debris affects the test. When the left slider reaches the leftmost end, the right slider is pulled by the rope. The two sets of cleaning blocks move relative to each other, clamping the two sides of the limit plate to enhance the clamping stability and avoid insufficient clamping force. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0027] Figure 1 This is a schematic diagram of the overall structure of a prefabricated building grouting hole quality detection device proposed in this invention.

[0028] Figure 2 This is a side view of the grouting hole quality detection device for prefabricated buildings proposed in this invention.

[0029] Figure 3 This is a schematic diagram of the internal structure of the connecting frame of a prefabricated building grouting hole quality detection device proposed in this invention.

[0030] Figure 4 This is an exploded structural diagram of the connecting frame of a prefabricated building grouting hole quality detection device proposed in this invention.

[0031] Figure 5 This is a schematic diagram of the cleaning unit structure of a prefabricated building grouting hole quality detection device proposed in this invention;

[0032] Figure 6 This is a schematic diagram of the reciprocating lead screw and slide bar connection of a prefabricated building grouting hole quality detection device proposed in this invention;

[0033] Figure 7 This is a schematic diagram of the auxiliary unit structure of a prefabricated building grouting hole quality detection device proposed in this invention;

[0034] Figure 8 This is a schematic diagram of the engineering steps of a prefabricated building grouting hole quality detection device proposed in this invention;

[0035] Figure 9 This is a schematic diagram illustrating the operation method of the grouting hole quality detection device for prefabricated buildings proposed in this invention.

[0036] Figure Descriptions: 100. Main body unit; 101. Base; 102. Support frame; 103. Hydraulic cylinder; 104. Pressure plate; 105. Connecting plate; 106. Gear plate; 107. Detection table; 200. Limiting unit; 201. Bidirectional lead screw; 202. Connecting frame; 203. First transmission wheel; 204. Transmission belt; 205. Second transmission wheel; 206. Gear; 207. Slide; 208. Electric latch; 209. Movable block; 210. First slide groove; 211. ... 212. Slide rail; 213. L-shaped rod; 300. Limiting plate; 301. Cleaning unit; 302. First support plate; 303. Slide rod; 304. Reciprocating screw; 305. Worm gear; 306. Cleaning block; 307. Rope; 308. Slider; 309. Worm; 310. Second support plate; 311. Connecting rod; 312. Guide rod; 400. Auxiliary unit; 401. U-shaped plate; 402. Mounting bracket; 403. Telescopic spring; 404. Rotating rod; 405. Clamping block. Detailed Implementation

[0037] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0038] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0039] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0040] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0041] Example 1

[0042] Reference Figures 1-9 As an embodiment of the present invention, a grouting hole quality detection device for prefabricated buildings is provided, including a main body unit 100, a limiting unit 200 and a cleaning unit 300.

[0043] The main unit 100 includes a base 101 and a support frame 102 that matches the base 101. A hydraulic cylinder 103 is fixedly installed at the top of the inner wall of the support frame 102, and a pressure plate 104 is installed at the bottom of the hydraulic cylinder 103. A connecting plate 105 is fixedly installed at the top of the pressure plate 104, and a toothed plate 106 is fixedly installed on one side of the connecting plate 105. A testing platform 107 is provided at the top of the base 101. The sample to be tested is placed on the top of the testing platform 107. The hydraulic cylinder 103 can extend and retract the pressure plate 104 and the connecting plate 105 to move up and down. When the connecting plate 105 moves, it will drive the toothed plate 106 to move down. The up and down movement of 104 applies a top pressure to the sample. A preset top pressure test force can be applied to the sample to be tested through the pressure plate 104. If the sample can withstand the preset top pressure, the compressive strength of the sample is deemed qualified; otherwise, it is unqualified.

[0044] The limiting unit 200 includes a connecting frame 202 fixedly installed on both sides of the detection table 107. A bidirectional lead screw 201 is rotatably connected to the inner wall of the supporting frame 102, and the bidirectional lead screw 201 passes through one side of the detection table 107 and the connecting frame 202. A gear 206 is fixedly installed on the outer surface of the bidirectional lead screw 201 near the gear plate 106, and the gear 206 meshes with the gear plate 106. A slide seat 207 is provided in the inner cavity of the connecting frame 202, and the slide seat 207 is threadedly connected to the bidirectional lead screw 201. Electric pins 208 are provided at both ends of the slide seat 207. A first sliding groove 210 is opened on both sides of the inner cavity of the connecting frame 202, and the first sliding groove 210 is slidably connected to the electric pin 208. Movable blocks 209 are slidably connected to both ends of the bidirectional lead screw 201, and the surface of the movable block 209 and the movable block 209 are slidably connected. The surface of the 9 is fitted together. The top of the movable block 209 is fixedly installed with an L-shaped rod 212, and the opposite surfaces of the two sets of L-shaped rods 212 are fixedly installed with a limiting plate 213. The toothed plate 106 drives the bidirectional lead screw 201 to rotate through the gear 206, which activates the electric latch 208. The latch of the electric latch 208 is inserted into the first slide groove 210 to limit the slide 207, so that the two sets of slides 207 move towards the middle of the test stage 107, pushing the movable block 209 to move until the movable block 209 drives the two sets of limiting plates 213 to clamp and limit the sample. At the same time, the latch of the electric latch 208 is retracted, and the slide 207 will rotate in the inner cavity of the connecting frame 202 and no longer push the movable block 209 to move, thus clamping and limiting the sample to avoid accidental displacement or deformation, which would affect the accuracy of the test results.

[0045] The cleaning unit 300 includes four sets of first support plates 301 fixedly installed on the top of the base 101. Reciprocating screws 303 and sliding rods 302 are respectively installed on the opposite surfaces of the four sets of first support plates 301, and the reciprocating screws 303 and sliding rods 302 are connected. Worm gears 304 are installed on the outer surface of one end of each of the two sets of sliding rods 302, and a worm 308 is provided at the bottom end of the worm gears 304. Slider blocks 307 are provided on the outer surfaces of one end of the reciprocating screw 303 and one end of the sliding rod 302, and the sliders 307 are threadedly connected to the reciprocating screw 303. The sliders 307 and sliding rods 302 are slidably connected. Ropes 306 are installed on the opposite surfaces of the sliders 307, and cleaning blocks 305 are fixedly installed on the opposite surfaces of the sliders 307. When the bidirectional screw 201 rotates, it drives the connecting rods through the transmission structure. The connecting rod 310 rotates synchronously, driving the sliding rod 302 and the reciprocating screw 303 to rotate synchronously via the worm gear 308 and worm wheel 304. The left slider 307 moves to the left, and the slider 307 drives the cleaning block 305 to clean the surface of the detection table 107, preventing debris from affecting the detection results. When the slider 307 moves to the leftmost end on the surface of the reciprocating screw 303, the left slider 307 pulls the right slider 307 to the surface of the reciprocating screw 303 via the rope 306. Due to the setting of the reciprocating screw 303, the two sets of cleaning blocks 305 move relative to each other. The cleaning blocks 305 clamp the two sides of the limiting plate 213 through the auxiliary unit 400, strengthening the stability of the clamping of the limiting plate 213 and avoiding insufficient clamping force.

[0046] A second support plate 309 is fixedly installed on both sides of the top of the base 101, and a connecting rod 310 is rotatably connected to the opposite surface of the second support plate 309. The outer surface of the connecting rod 310 is connected to two sets of worm gears 308, and the connecting rod 310 and the bidirectional lead screw 201 are connected through a transmission structure, which completes the rotation of the worm gear 308.

[0047] The transmission structure includes a second transmission wheel 205 and a first transmission wheel 203, which are respectively fixedly installed on the outer surfaces of the connecting rod 310 and the bidirectional lead screw 201. A transmission belt 204 is sleeved on the outer surfaces of the second transmission wheel 205 and the first transmission wheel 203. When the bidirectional lead screw 201 rotates, it drives the connecting rod 310 to rotate synchronously through the first transmission wheel 203, the transmission belt 204, and the second transmission wheel 205.

[0048] Limiting blocks are provided on the outer surfaces of the two sets of sliding rods 302, and a guide rod 311 is fixedly installed on one side of the limiting block. The guide rod 311 and the slider 307 are slidably connected. The guide rod 311 limits the slider 307 to ensure that the sliders 307 on both sides are on the same horizontal line.

[0049] The distance that slider 307 moves on slide bar 302 is one-quarter of the distance that slider 307 moves on the surface of reciprocating screw 303. The length of rope 306 is equal to the distance that left slider 307 moves to the left end of reciprocating screw 303. The distance that slider 307 moves on slide bar 302 is equal to the distance that the two sets of limiting plates 213 move together. This ensures that when left cleaning block 305 moves to the leftmost end, right cleaning block 305 also moves to the initial position of left cleaning block 305.

[0050] The auxiliary unit 400 includes a U-shaped plate 401 fixedly installed on the opposite sides of two sets of cleaning blocks 305. A mounting bracket 402 is fixedly installed on one side of the U-shaped plate 401, and a rotating rod 404 is fixedly installed in the middle of the mounting bracket 402. Clamping blocks 405 are movably connected to both sides of the surface of the rotating rod 404. The two sets of clamping blocks 405 clamp the two sides of the limiting plate 213, thereby strengthening the stability of the clamping of the limiting plate 213 and avoiding insufficient clamping force.

[0051] A telescopic spring 403 is fixedly installed between the clamping block 405 and the U-shaped plate 401, and there are several telescopic springs 403. The telescopic springs 403 can prevent the clamping block 405 from clamping too much and improve the stability of clamping.

[0052] The top of each of the two sets of connecting frames 202 is provided with a second sliding groove 211, and the second sliding groove 211 and the L-shaped rod 212 are slidably connected to ensure the sliding of the L-shaped rod 212.

[0053] Example 2

[0054] A method for detecting the quality of grouting holes in prefabricated buildings, using the grouting hole quality detection device in Example 1, specifically includes the following steps:

[0055] S1: The core sampler is used to drill and sample the target structure. The sample to be tested is placed on the top of the test platform 107. The hydraulic cylinder 103 can extend the pressure plate 104 and the connecting plate 105 move up and down. When the connecting plate 105 moves, it will drive the toothed plate 106 to move down. The toothed plate 106 drives the bidirectional lead screw 201 to rotate through the gear 206. The bidirectional lead screw 201 drives the connecting rod 310 to rotate synchronously through the transmission structure. The worm 308 and worm wheel 304 drive the slide bar 302 and the reciprocating lead screw 303 to rotate synchronously.

[0056] S2: When the reciprocating screw 303 rotates, the slider 307 on the left moves to the left. The slider 307 drives the cleaning block 305 to clean the surface of the testing stage 107. When the slider 307 has moved more than half the distance on the surface of the reciprocating screw 303, the electric latch 208 is activated. The latch of the electric latch 208 is inserted into the first slide groove 210 to limit the slide 207, so that the two sets of slides 207 move towards the middle of the testing stage 107, pushing the movable block 209 to move until the movable block 209 drives the two sets of limiting plates 213 to clamp and limit the sample. At the same time, the latch of the electric latch 208 retracts, and the slide 207 will rotate in the inner cavity of the connecting frame 202 and no longer push the movable block 209 to move.

[0057] S3: When the slider 307 moves to the leftmost end on the surface of the reciprocating screw 303, the left slider 307 pulls the right slider 307 to the surface of the reciprocating screw 303 via the rope 306. Due to the setting of the reciprocating screw 303, the two sets of cleaning blocks 305 move relative to each other. The cleaning blocks 305 clamp the two sides of the limiting plate 213 through the auxiliary unit 400, which strengthens the stability of the clamping of the limiting plate 213 and avoids insufficient clamping force.

[0058] S4: The pressure plate 104 moves up and down to apply top pressure to the sample. A preset top pressure test force can be applied to the sample to be tested through the pressure plate 104. If the sample can withstand the preset top pressure, the compressive strength of the sample is deemed qualified; otherwise, it is unqualified. After the test, the pressure plate 104 is reset, the limit unit 200 is returned to its position, and when the two sets of cleaning blocks 305 move relative to each other to the two ends of the reciprocating screw 303, the left cleaning block 305 moves to the right, and the right side moves slightly and stops on the surface of the slide bar 302. The left slider 307 moves to the right end of the reciprocating screw 303, ready for the next operation.

[0059] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A prefabricated building grouting hole quality detection device, characterized in that, include: The main unit (100) includes a base (101) and a support frame (102) that matches and is installed with the base (101). A hydraulic cylinder (103) is fixedly installed at the top of the inner wall of the support frame (102), and a pressure plate (104) is installed at the bottom of the hydraulic cylinder (103). A connecting plate (105) is fixedly installed at the top of the pressure plate (104), and a toothed plate (106) is fixedly installed on one side of the connecting plate (105). A testing platform (107) is provided at the top of the base (101). The limiting unit (200) includes a connecting frame (202) fixedly installed on both sides of the testing table (107). The inner wall of the supporting frame (102) is rotatably connected to a bidirectional lead screw (201), and the bidirectional lead screw (201) passes through one side of the testing table (107) and the connecting frame (202). A gear (206) is fixedly installed on the outer surface of the bidirectional lead screw (201) near the toothed plate (106), and the gear (206) meshes with the toothed plate (106). The inner cavity of the connecting frame (202) is provided with a slide (207), and the slide (207) and the bidirectional lead screw (201) are connected. 01) Threaded connection, both ends of the slide (207) are provided with electric pins (208), both sides of the inner cavity of the connecting frame (202) are provided with first sliding grooves (210), and the first sliding grooves (210) and electric pins (208) are slidably connected. Both ends of the bidirectional screw (201) are slidably connected with movable blocks (209), and the surface of the movable blocks (209) is in contact with the surface of the slide (207). The top of each movable block (209) is fixedly installed with an L-shaped rod (212), and the opposite surfaces of the two sets of L-shaped rods (212) are fixedly installed with limit plates (213). The cleaning unit (300) includes four sets of first support plates (301) fixedly installed on the top of the base (101). Reciprocating screws (303) and slide bars (302) are respectively installed on the opposite surfaces of the four sets of first support plates (301), and the reciprocating screws (303) and slide bars (302) are connected. Worm gears (304) are installed on the outer surface of one end of the two sets of slide bars (302), and worm gears (308) are provided at the bottom end of the worm gears (304). Slider blocks (307) are provided on the outer surfaces of one end of the reciprocating screws (303) and one end of the slide bars (302), and the sliders (307) are threadedly connected to the reciprocating screws (303). The sliders (307) and slide bars (302) are slidably connected. Ropes (306) are installed on the opposite surfaces of the sliders (307), and cleaning blocks (305) are fixedly installed on the opposite surfaces of the sliders (307).

2. The prefabricated building grouting hole quality detection device according to claim 1, characterized in that: The base (101) has a second support plate (309) fixedly installed on both sides of the top end, and a connecting rod (310) is rotatably connected to the opposite surface of the second support plate (309). The outer surface of the connecting rod (310) is connected to two sets of worm gears (308), and the connecting rod (310) and the bidirectional lead screw (201) are connected by a transmission structure.

3. The prefabricated building grouting hole quality testing device according to claim 2, characterized in that: The transmission structure includes a second transmission wheel (205) and a first transmission wheel (203) that are respectively fixedly installed on the outer surfaces of the connecting rod (310) and the bidirectional lead screw (201), and a transmission belt (204) is sleeved on the outer surfaces of the second transmission wheel (205) and the first transmission wheel (203).

4. The prefabricated building grouting hole quality detection device according to claim 3, characterized in that: Limiting blocks are provided on the outer surfaces of the two sets of sliding rods (302), and a guide rod (311) is fixedly installed on one side of the limiting block. The guide rod (311) and the slider (307) are slidably connected.

5. The prefabricated building grouting hole quality detection device according to claim 4, characterized in that: The distance the slider (307) moves on the slide bar (302) is one-quarter of the distance the slider (307) moves on the surface of the reciprocating screw (303), and the length of the rope (306) is equal to the distance the left slider (307) moves to the left end of the reciprocating screw (303). The distance the slider (307) moves on the slide bar (302) is equal to the distance the two sets of limiting plates (213) move together.

6. The prefabricated building grouting hole quality detection device according to claim 5, characterized in that: The detection device also includes an auxiliary unit (400), which includes a U-shaped plate (401) fixedly installed on the opposite sides of two sets of cleaning blocks (305). A mounting bracket (402) is fixedly installed on one side of the U-shaped plate (401), and a rotating rod (404) is fixedly installed in the middle of the mounting bracket (402). Clamping blocks (405) are movably connected to both sides of the surface of the rotating rod (404).

7. The prefabricated building grouting hole quality detection device according to claim 6, characterized in that: A telescopic spring (403) is fixedly installed between the clamping block (405) and the U-shaped plate (401), and the number of telescopic springs (403) is several.

8. The prefabricated building grouting hole quality detection device according to claim 1, characterized in that: The top of each of the two sets of connecting frames (202) is provided with a second sliding groove (211), and the second sliding groove (211) and the L-shaped rod (212) are slidably connected.

9. A method for inspecting the quality of grouting holes in prefabricated buildings, using the inspection device described in claim 7, specifically comprising the following steps: S1: The core sampler is used to drill the core of the target structure. The sample to be tested is placed on the top of the test platform (107). The hydraulic cylinder (103) retractable pressure plate (104) and connecting plate (105) move up and down. When the connecting plate (105) moves, it will drive the toothed plate (106) to move down. The toothed plate (106) drives the double-acting screw (201) to rotate through the gear (206). The double-acting screw (201) drives the connecting rod (310) to rotate synchronously through the transmission structure. The worm (308) and worm wheel (304) drive the slide rod (302) and reciprocating screw (303) to rotate synchronously. S2: When the reciprocating screw (303) rotates, the slider (307) on the left moves to the left. The slider (307) drives the cleaning block (305) to clean the surface of the test stage (107). When the slider (307) has moved more than half the distance on the surface of the reciprocating screw (303), the electric latch (208) is activated. The latch of the electric latch (208) is inserted into the first slide groove (210) to limit the slide (207), so that the two sets of slides (207) move towards the middle of the test stage (107) and push the movable block (209) to move until the movable block (209) drives the two sets of limiting plates (213) to clamp and limit the sample. At the same time, the latch of the electric latch (208) retracts, and the slide (207) will rotate in the inner cavity of the connecting frame (202) and no longer push the movable block (209) to move. S3: When the slider (307) moves to the leftmost end on the surface of the reciprocating screw (303), the left slider (307) pulls the right slider (307) to the surface of the reciprocating screw (303) through the rope (306). Due to the setting of the reciprocating screw (303), the two sets of cleaning blocks (305) move relative to each other. The cleaning blocks (305) clamp the two sides of the limiting plate (213) through the auxiliary unit (400), which strengthens the stability of the clamping of the limiting plate (213) and avoids insufficient clamping force. S4: The pressure plate (104) moves up and down to apply top pressure to the sample. The pressure plate (104) can apply a preset top pressure test force to the sample being tested. If the sample can withstand the preset top pressure, the sample's compressive strength is deemed qualified; otherwise, it is unqualified. After the test, the pressure plate (104) is reset, the limit unit (200) is returned to its position, and when the two sets of cleaning blocks (305) move relative to each other to the two ends of the reciprocating screw (303), the left cleaning block (305) moves to the right, and the right side moves slightly and stops on the surface of the slide bar (302). The left slider (307) moves to the right end of the reciprocating screw (303) to prepare for the next operation.

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