A device for detecting water seepage performance of machine-made sand concrete

Abstract

The present invention belongs to the technical field of concrete anti-seepage detection, and particularly relates to a device for detecting water seepage performance of machine-made sand concrete, comprising a frame, a forward and backward moving mechanism is provided on the top of the frame, a mounting plate is connected to the forward and backward moving mechanism, a test mold is evenly spaced on the right side of the mounting plate, a slide is connected to the right rear side of the top of the frame, a support plate is connected in the slide, a pushing mechanism for pushing the test block forward to the discharge port is provided on the slide, a pushing piece for pushing the test block to the left into the test mold is provided on the slide, and a pushing piece for pushing the test block out of the test mold is evenly spaced on the mounting plate. The present invention realizes the functions of automatically removing the cement slurry film at both ends of the test block, automatically sealing the side of the test block, and automatically loading and unloading the test block, effectively overcoming the shortcomings of the traditional method of repeatedly loading and unloading the test block manually, manually removing the cement slurry film at both ends of the test block, and manually sealing the side of the test block, significantly reducing the workload of the detection personnel and improving the overall efficiency of the detection operation.

Description

Technical Field

[0001] The invention belongs to the technical field of concrete anti-seepage detection, and in particular relates to a device for detecting water seepage performance of machine-made sand concrete. Background Art

[0002] Machine-made sand concrete refers to concrete made with machine-made sand as fine aggregate. Machine-made sand concrete has been widely used in modern construction and infrastructure construction due to its controllable performance, high strength, and good durability. Machine-made sand concrete needs to be tested for water seepage resistance before it is put into use.

[0003] At present, the water seepage resistance test of machine-made sand concrete generally relies on concrete water resistance testers. However, the loading and unloading operations during the test still need to be completed manually, including pressing the machine-made sand concrete test block into the test mold, fixing the test mold to the test mold seat of the concrete water resistance tester with bolts, and disassembling and removing the test block after the test is completed. This series of manual operations is not only time-consuming and labor-intensive, but also when faced with multiple test molds, the repeated loading and unloading process significantly increases the labor intensity, seriously restricting the test efficiency.

[0004] In order to ensure the accuracy of the water-resistance test results, the cement slurry film on both ends of the machine-made sand concrete test block must be removed before the test to ensure that the pressurized water can penetrate unimpeded and truly reflect the water-resistance performance of the concrete. In addition, the test block needs to be sealed, which involves rotating the test block in a container filled with melted paraffin to form a paraffin sealing layer on the annular side of the test block. The formation of the sealing layer enhances the sealing between the test block and the test mold, effectively reduces side leakage, and ensures the accuracy of the test. However, the existing concrete water-resistance tester does not integrate the functions of automatically removing the cement slurry film and sealing the sides of the test block, resulting in additional manual operations for these two preparatory treatments, which further increases the burden on testers and reduces test efficiency. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a machine-made sand concrete water seepage performance detection device which can automatically remove the cement slurry film at both ends of the test block, automatically seal the side of the test block, and automatically load and unload the test block.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a device for detecting water seepage performance of machine-made sand concrete, comprising a frame, a forward and backward moving mechanism is provided on the top of the frame, a mounting plate is connected to the forward and backward moving mechanism, a test mold is evenly spaced on the right side of the mounting plate, a pressure water supply system for inputting water into the test mold is provided on the frame, a heating cylinder is installed on the outside of the test mold, a slide is connected to the right rear side of the top of the frame, a discharge port is opened on the left front side of the slide, a support plate is connected in the slide, a groove is opened on the top front side of the support plate, a heater facing the groove is connected to the bottom of the support plate, a pushing mechanism for pushing the test block forward to the discharge port is provided on the slide, a pushing piece for pushing the test block to the left into the test mold is provided on the slide, a pushing piece for pushing the test block out of the test mold is evenly spaced on the mounting plate, wire brushes are slidably connected to the left and right sides of the slide, through openings are opened on the left and right sides of the slide for the wire brush to extend into the slide, and a driving mechanism for driving the wire brush to reciprocate back and forth is provided on the slide.

[0007] Preferably, the front and rear edges of the support plate are both arc-shaped.

[0008] Preferably, the inner walls on both the front and rear sides of the groove are designed to be inclined surfaces.

[0009] Preferably, the pushing member comprises a hydraulic rod I installed on the right front side of the slideway, a push block I is connected to the telescopic rod of the hydraulic rod I, the push block I is slidably matched with the slideway, and the push block I is aligned with the discharge port.

[0010] Preferably, the ejection member comprises a hydraulic rod II mounted on the mounting plate, a telescopic rod of the hydraulic rod II is connected to a push block II, and the push block II penetrates the mounting plate and is slidably matched with the test mold.

[0011] Preferably, the pushing mechanism includes two front and rear rotating shafts rotatably connected to the upper part of the slide, a chain is arranged between the two rotating shafts through a sprocket sleeve, pushing plates are connected to the chain at even intervals along its motion trajectory, and a roller is rotatably connected to the side of the pushing plate away from the chain, and a motor II is installed on the outside of the slide, and the output shaft of motor II is connected to the corresponding rotating shaft.

[0012] Preferably, the driving mechanism includes a motor III installed on the right outer wall of the slide, a disc is connected to the output shaft of motor III, a vertical groove is opened on the wire brush on the right, a push rod is connected to the eccentric position of the disc, the push rod is located in the vertical groove, a connecting plate is connected between the upper parts of the two wire brushes, and the connecting plate is slidably matched with the slide.

[0013] Preferably, a water collecting box with an open top is connected to the upper right side of the frame, the water collecting box is located below the test mold, and a valve pipe is connected to the water collecting box.

[0014] Beneficial effects: 1. The present invention can push the machine-made sand concrete test block forward through the pushing mechanism. During the rolling process of the test block, it first contacts with the wire brush to automatically remove the cement slurry film at both ends. After the cement slurry film is removed, the test block continues to roll into the groove, and the paraffin adheres to the annular side of the test block to complete the automatic sealing process. The test block can be pushed into the test mold through the pushing piece to complete the automatic loading of the test block. The test block can be pushed out of the test mold through the pushing piece to complete the automatic unloading of the test block. In this way, the present invention realizes the functions of automatically removing the cement slurry film at both ends of the test block, automatically sealing the side of the test block, and automatically loading and unloading the test block, which effectively overcomes the shortcomings of the traditional method that requires repeated manual loading and unloading of the test block, manual removal of the cement slurry film at both ends of the test block, and manual sealing of the side of the test block, significantly reduces the workload of the inspection personnel, and improves the overall efficiency of the inspection operation.

[0015] 2. The water collecting tank of the present invention adopts a stepped structure design inside, which can not only collect the water discharged from the test mold, but also allow the larger particulate matter in the water to naturally settle to the bottom of the water collecting tank, initially filtering out some impurities and improving the cleanliness of the water. The relatively clear water after the initial sedimentation can be returned to the water storage tank through the reflux pipe, thereby maintaining the water storage quality, while realizing water recycling and reducing the waste of water resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0017] Figure 2 It is a schematic diagram of the installation of the pushing mechanism of the present invention.

[0018] Figure 3 It is a schematic diagram of the three-dimensional structure of the pressure water delivery system and the push-in member of the present invention.

[0019] Figure 4 It is a three-dimensional structural schematic diagram of the pushing mechanism of the present invention.

[0020] Figure 5 It is a three-dimensional structural schematic diagram of the forward and backward moving mechanism and the ejection member of the present invention.

[0021] Figure 6 It is a three-dimensional structural schematic diagram of the ejection member of the present invention.

[0022] Figure 7 It is a schematic diagram of the installation of the driving mechanism of the present invention.

[0023] Figure 8 It is an exploded view of the driving mechanism of the present invention.

[0024] Serial numbers in the figure: 1-frame, 23-water pump, 24-pressure vessel, 25-water pipe, 26-control valve, 27-housing, 28-hose, 29-regulating valve, 210-water injection pipe, 31-slide rail, 32-slider Ⅰ, 33-screw pair, 34-motor Ⅰ, 4-mounting plate, 5-test mold, 51-sealing ring, 52-heating cylinder, 6-slideway, 61-discharge port, 62-through port, 7-support plate, 71-groove, 8-heating Device, 91-shaft, 92-chain, 93-push plate, 94-motor II, 95-roller, 10-push piece, 101-hydraulic rod I, 102-push block I, 11-push piece, 111-hydraulic rod II, 112-push block II, 12-guide sleeve, 13-wire brush, 141-motor III, 142-disc, 143-connecting plate, 144-vertical groove, 145-push rod, 15-water collecting tank, 16-valve pipe, 17-test block. DETAILED DESCRIPTION

[0025] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0026] A device for detecting water seepage performance of machine-made sand concrete, see Figure 1-Figure 6, including a frame 1, a front-to-back moving mechanism is provided on the top of the frame 1, a mounting plate 4 is connected to the front-to-back moving mechanism, six test molds 5 are connected to the right side of the mounting plate 4 evenly spaced from front to back, a pressure water supply system for inputting water into the test mold 5 is provided on the frame 1, a heating cylinder 52 is installed on the outside of the test mold 5, a slide 6 is connected to the right rear side of the top of the frame 1, the slide 6 is located on the right side of the test mold 5, a discharge port 61 is opened on the left front side of the slide 6, a support plate 7 is connected to the slide 6, and the front and rear edges of the support plate 7 are both arc-shaped, which can effectively position the machine-made sand concrete test block 17 to prevent The machine-made sand concrete test block 17 slides down from the support plate 7. A groove 71 is provided on the front side of the top of the support plate 7. The inner walls of the front and rear sides of the groove 71 are designed as inclined surfaces, which can provide guidance for the machine-made sand concrete test block 17 and ensure that the machine-made sand concrete test block 17 can smoothly enter and exit the groove 71. A heater 8 is connected to the front side of the bottom of the support plate 7. The heater 8 is located directly below the groove 71. A pushing mechanism for pushing the machine-made sand concrete test block 17 forward to the discharge port 61 is provided on the slide 6. A pushing member 10 for pushing the machine-made sand concrete test block 17 to the left into the test mold 5 is provided on the slide 6. The push-in member 10 includes a hydraulic rod Ⅰ101 installed on the right front side of the slide 6, and a push block Ⅰ102 is connected to the telescopic rod of the hydraulic rod Ⅰ101. The push block Ⅰ102 is slidably matched with the slide 6, and the push block Ⅰ102 is aligned with the discharge port 61. Six ejection members 11 are evenly spaced from front to back on the mounting plate 4. The six ejection members 11 correspond to the six test molds 5 one by one. The ejection member 11 includes a hydraulic rod Ⅱ111 installed on the mounting plate 4, and a push block Ⅱ112 is connected to the telescopic rod of the hydraulic rod Ⅱ111. The push block Ⅱ112 penetrates the mounting plate 4 and is slidably matched with the test mold 5. The outer wall of the push block Ⅱ112 is sleeved with The sealing ring 51 is fixedly connected to the mounting plate 4, and the sliding connection between the push block II 112 and the test mold 5 is sealed by the sealing ring 51 to prevent the test mold 5 from leaking. A group of guide sleeves 12 are connected to the outer walls on both sides of the left and right sides of the slide 6. The number of each group of guide sleeves 12 is two, and the two guide sleeves 12 in each group are symmetrically arranged front to back. A wire brush 13 is slidably connected in each group of guide sleeves 12. The left and right sides of the slide 6 are provided with a through opening 62 for the wire brush 13 to extend into the slide 6. The wire brush 13 is located on the rear side of the groove 71, and the slide 6 is provided with a driving mechanism for driving the wire brush 13 to move back and forth.

[0027] First, place the paraffin block into the groove 71 on the support plate 7. The heater 8 can heat the paraffin in the groove 71 so that the paraffin melts into liquid. Then, place the cylindrical machine-made sand concrete test block 17 on the rear side of the support plate 7. The test block 17 can be pushed forward to the discharge port 61 through the pushing mechanism. Since the test block 17 is cylindrical, the test block 17 will roll when it is pushed forward by the pushing mechanism. The slideway 6 can guide the test block 17 to avoid the test block 17 from tilting when rolling forward, and can ensure that the test block 17 rolls forward smoothly. During the rolling process of the test block 17, it first contacts the wire brush 13, and the left and right wire brushes 13 can be driven by the driving mechanism to move back and forth to brush off the cement slurry film at both ends of the test block 17, so as to achieve the effect of automatically removing the cement slurry film at both ends of the test block 17. After the cement slurry film at both ends is removed, the test block 17 continues to roll forward into the groove 71, and the paraffin in the groove 71 adheres to the annular side of the test block 17 to achieve the effect of automatically sealing the annular side of the test block 17. The test block 17 behind the sealing annular side continues to roll forward to align with the discharge port 61 and the pushing piece 10, and the test block 17 is positioned by the arc edge at the front end of the support plate 7 to ensure that the test block 17 is accurately aligned with the discharge port 61, the pushing piece 10 and the test mold 5. Then, the hydraulic rod Ⅰ101 is controlled to drive the pushing block Ⅰ102 to move back and forth left and right. The pushing block Ⅰ102 moves to the left to push the test block 17 behind the sealing annular side to the left into the test mold 5, so as to realize automatic loading of the test block 17. The forward and backward moving mechanism can drive the mounting plate 4 to drive the test mold 5 to intermittently move forward, so that the six test molds 5 are aligned with the discharge port 61 one by one, and the test blocks 17 are pushed into the six test molds 5 one by one to complete the filling of the test blocks 17. Before the test blocks 17 are filled, the heating cylinder 52 is controlled to work to preheat the test mold 5, so that in the process of the test blocks 17 being moved into the test mold 5, the paraffin on the annular side of the test block 17 contacts the preheated test mold 5, and the paraffin melts and continues to adhere to the annular side of the test block 17. In order to prevent the paraffin on the test block 17 from being squeezed and crushed by the test mold 5 and falling off from the test block 17 during the process of the test block 17 being pushed to the left by the push-in member 10 into the test mold 5, a paraffin sealing layer can be formed on the annular side of the test block 17 to enhance the sealing between the test block 17 and the test mold 5; when the test block 17 is filled, the heating cylinder 52 is controlled to stop working, so that the test mold 5 is naturally cooled, and the paraffin on the annular side of the test block 17 is cooled and solidified accordingly, ensuring the sealing between the test block 17 and the test mold 5. The test mold 5 is pressurized and injected with water by the pressure water supply system to detect the water seepage resistance of the machine-made sand concrete test block 17. The pressurized water injection method for detecting the water seepage resistance of the machine-made sand concrete test block 17 is a prior art and will not be described in detail here. After the test is completed, the hydraulic rod II 111 is controlled to drive the push block II 112 to move to the right, thereby pushing the test block 17 to the right from the test mold 5 to achieve automatic unloading of the test block 17. After the test block 17 is pushed out, it can be manually picked up, and then the hydraulic rod II 111 is controlled to drive the push block II 112 to move to the left and reset.In this way, the device realizes the functions of automatically removing the cement slurry film at both ends of the test block 17, automatically sealing the side of the test block 17, and automatically loading and unloading the test block 17, effectively overcoming the shortcomings of the traditional method of manually repeatedly loading and unloading the test block 17, manually removing the cement slurry film at both ends of the test block 17, and manually sealing the side of the test block 17, significantly reducing the workload of the testing personnel and improving the overall efficiency of the testing operation.

[0028] See also Figure 3 The pressure water supply system includes a water pump 23 and a pressure vessel 24 installed at the bottom of the inner side of the frame 1. The water pump 23 is located at the rear side of the pressure vessel 24. The water pump 23 is connected to the pressure vessel 24 through a water supply pipe 25. A control valve 26 is installed at the outlet of the pressure vessel 24. A shell 27 is connected to the top of the mounting plate 4. The shell 27 is connected to the control valve 26 through a hose 28. The shell 27 is connected to the six test molds 5 through six independent water injection pipes 210, and a regulating valve 29 is installed on the water injection pipe 210.

[0029] The water pump 23 is connected to an external water source, and the water pump 23 is started to deliver water to the pressure vessel 24 through the water pipe 25. The water is pressurized and stabilized by the pressure vessel 24 to ensure a continuous and stable supply of high-pressure water. After that, the pressurized water is introduced into the shell 27 through the hose 28, and the water is injected into each test mold 5 through the water injection pipe 210 to detect the water seepage resistance of the machine-made sand concrete test block 17. The control valve 26 is responsible for controlling the opening and closing of the water and regulating the flow, and the regulating valve 29 is used to adjust the flow of the pressurized water flowing to each test mold 5.

[0030] See also Figure 3 and Figure 5 The forward and backward moving mechanism includes a slide rail 31 installed on the top of the frame 1, the slide rail 31 is located on the left side of the slideway 6, a slider Ⅰ32 is slidably connected to the slide rail 31, and a screw pair 33 is rotatably connected to the top of the frame 1. The screw pair 33 is located on the left side of the slide rail 31, and the nut of the screw pair 33 is fixedly connected to the left side surface of the slider Ⅰ32. A motor Ⅰ34 is installed on the top front side of the frame 1, and the output shaft of the motor Ⅰ34 is connected to the screw of the screw pair 33. The screw pair 33 is a ball screw pair, which has the advantages of high efficiency, high precision, low friction, long life and low noise. The mounting plate 4 is connected to the top of the slider Ⅰ32.

[0031] The control motor I34 is operated to drive the screw in the screw pair 33 to rotate forward, and the rotation of the screw causes the nut on the screw pair 33 to move forward, and the forward movement of the nut drives the slider I32 to move forward synchronously, thereby causing the mounting plate 4 and the test molds 5 mounted thereon to move forward, ensuring that the six test molds 5 can be aligned with the discharge port 61 one by one, thereby completing the one-by-one loading of the test blocks 17. Similarly, the control motor I34 is operated to cause the screw in the screw pair 33 to rotate in the opposite direction, and the reverse rotation of the screw causes the nut on the screw pair 33 to move backward, and the backward movement of the nut drives the slider I32 to move backward accordingly, thereby causing the mounting plate 4 and the test molds 5 mounted thereon to move backward.

[0032] See also Figure 2 and Figure 4 The pushing mechanism includes two front and rear rotating shafts 91 rotatably connected to the upper part of the slide 6, a chain 92 is arranged between the two rotating shafts 91 through a sprocket, six pushing plates 93 are evenly spaced and connected to the chain 92 along its motion trajectory, a roller 95 is rotatably connected to the side of the pushing plate 93 away from the chain 92, a motor II 94 is installed on the rear side of the right outer wall of the slide 6, and the output shaft of the motor II 94 is connected to the rotating shaft 91 on the rear side.

[0033] Controlling the operation of motor II 94 can drive the rear shaft 91 to rotate, thereby driving the chain 92 to operate. The movement of chain 92 will prompt the push plate 93 to move forward along a specific trajectory to push the machine-made sand concrete test block 17 forward. When the push plate 93 reaches the front end position, the push plate 93 will advance forward according to the set path of the chain 92 and simultaneously perform an upward rotation action, so that the test block 17 can be smoothly and effectively pushed out of the groove 71 on the support plate 7, thereby realizing the automatic pushing function of the test block 17. The roller 95 can prevent the paraffin on the test block 17 from directly rubbing against the push plate 93 during the process of the test block 17 being pushed to the left by the push-in piece 10 into the test mold 5, thereby preventing the paraffin from breaking and falling off the test block 17.

[0034] See also Figure 7-Figure 8 The driving mechanism includes a motor III 141 installed on the outer wall of the right side of the slide, a disc 142 is connected to the output shaft of the motor III 141, a vertical groove 144 is opened on the wire brush 13 on the right side, a push rod 145 is connected to the eccentric position of the disc 142, and the push rod 145 is located in the vertical groove 144. A connecting plate 143 is connected between the upper parts of the two wire brushes 13, and the connecting plate 143 is slidably matched with the slide 6, and the connecting plate 143 is located in the chain 92.

[0035] The control motor III 141 works to drive the disc 142 to drive the push rod 145 to rotate. The push rod 145 rotates to push the wire brush 13 on the right to move back and forth. The back and forth movement of the wire brush 13 on the right drives the wire brush 13 on the left to move back and forth through the connecting plate 143. The back and forth movement of the left and right wire brushes 13 can brush off the cement slurry film at both ends of the test block 17, so as to achieve the effect of automatically removing the cement slurry film at both ends of the test block 17.

[0036] See also Figure 5 A water collecting box 15 with an open top is connected to the upper right side of the frame 1. The water collecting box 15 is located below the test mold 5. A valve pipe 16 is connected to the rear side of the water collecting box 15.

[0037] When the ejector 11 pushes the machine-made sand concrete test block 17 to the right from the test mold 5, the residual water in the test mold 5 is discharged and falls into the water collecting tank 15 for collection to avoid the residual water dripping everywhere, so as to keep the surrounding environment clean. The valve on the valve pipe 16 is turned to open, and the water in the water collecting tank 15 can be discharged to the outside, which is convenient for regular maintenance and cleaning.

[0038] The above-mentioned embodiments only express the preferred implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for those skilled in the art, several modifications, improvements and substitutions can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention.

Claims

1. A device for detecting water seepage performance of machine-made sand concrete, comprising a frame (1), a front-rear moving mechanism being provided on the top of the frame (1), a mounting plate (4) being connected to the front-rear moving mechanism, a test mold (5) being connected to the right side of the mounting plate (4) at even intervals, a pressure water supply system for inputting water into the test mold (5) being provided on the frame (1), characterized in that: A heating cylinder (52) is installed outside the test mold (5), a slideway (6) is connected to the right rear side of the top of the frame (1), a discharge port (61) is opened on the left front side of the slideway (6), a support plate (7) is connected inside the slideway (6), a groove (71) is opened on the top front side of the support plate (7), a heater (8) facing the groove (71) is connected to the bottom of the support plate (7), a pushing mechanism for pushing the test block (17) forward to the discharge port (61) is provided on the slideway (6), and a A pushing member (10) is provided for pushing the test block (17) leftward into the test mold (5); ejection members (11) are provided on the mounting plate (4) at even intervals for pushing the test block (17) out of the test mold (5); steel wire brushes (13) are slidably connected to the left and right sides of the slideway (6); openings (62) are provided on the left and right sides of the slideway (6) for allowing the steel wire brushes (13) to extend into the slideway (6); and a driving mechanism is provided on the slideway (6) for driving the steel wire brushes (13) to reciprocate forward and backward. The push member (10) comprises a hydraulic rod I (101) mounted on the right front side of the slideway (6), a push block I (102) being connected to the telescopic rod of the hydraulic rod I (101), the push block I (102) being slidably matched with the slideway (6), and the push block I (102) being aligned with the discharge port (61); The ejector (11) comprises a hydraulic rod II (111) mounted on a mounting plate (4), a telescopic rod of the hydraulic rod II (111) being connected to a push block II (112), and the push block II (112) passes through the mounting plate (4) and is slidably engaged with the test mold (5); The pushing mechanism comprises two front and rear rotating shafts (91) rotatably connected to the upper part of the slideway (6); a chain (92) is arranged between the two rotating shafts (91) via a sprocket sleeve; pushing plates (93) are evenly spacedly connected to the chain (92) along its motion trajectory; a roller (95) is rotatably connected to the side of the pushing plate (93) away from the chain (92); a motor II (94) is installed outside the slideway (6); and an output shaft of the motor II (94) is connected to the rotating shaft (91) corresponding to the motor II; The forward and backward moving mechanism comprises a slide rail (31) mounted on the top of the frame (1), the slide rail (31) being located on the left side of the slideway (6), a slider I (32) being slidably connected to the slide rail (31), a lead screw pair (33) being rotatably connected to the top of the frame (1), the lead screw pair (33) being located on the left side of the slide rail (31), a nut of the lead screw pair (33) being fixedly connected to the left side surface of the slider I (32), a motor I (34) being mounted on the front side of the top of the frame (1), an output shaft of the motor I (34) being connected to a lead screw of the lead screw pair (33), and a mounting plate (4) being connected to the top of the slider I (32).

2. The device for detecting water seepage performance of machine-made sand concrete according to claim 1, characterized in that: The front and rear edges of the support plate (7) are both arc-shaped.

3. The device for detecting water seepage performance of machine-made sand concrete according to claim 1, characterized in that: The inner walls on both the front and rear sides of the groove (71) are designed as inclined surfaces.

4. The device for detecting water seepage performance of machine-made sand concrete according to claim 1, characterized in that: The driving mechanism comprises a motor III (141) mounted on the right outer wall of the slideway (6); a disc (142) is connected to the output shaft of the motor III (141); a vertical groove (144) is formed on the right wire brush (13); a push rod (145) is connected to the eccentric position of the disc (142); the push rod (145) is located in the vertical groove (144); a connecting plate (143) is connected between the upper parts of the two wire brushes (13); and the connecting plate (143) is slidably matched with the slideway (6).

5. The device for detecting water seepage performance of machine-made sand concrete according to claim 1, characterized in that: A water collecting box (15) with an open top is connected to the upper right side of the frame (1). The water collecting box (15) is located below the test mold (5). A valve pipe (16) is connected to the water collecting box (15).

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