Device and method for detecting erosive wear performance of hydraulic concrete

Abstract

The invention discloses a device and a method for detecting erosive wear performance of hydraulic concrete, and relates to the technical field of durability detection of the hydraulic concrete. The detection box is provided with a detection cavity for placing a test piece and a scouring medium; the driving mechanism comprises a driving assembly, a stirring assembly and a transmission part; the transmission part is rotationally arranged in the detection cavity, at least one test piece is placed on the transmission part, and each test piece can be rotationally or fixedly connected to the transmission part; one end of the driving assembly can extend into the detection cavity and is detachably connected with the transmission part; the stirring assembly is detachably arranged on the part, located in the detection cavity, of the driving assembly; when the transmission parts are connected with the stirring assemblies, the driving assemblies can drive the corresponding transmission discs and the stirring assemblies to rotate. According to the device and the method for detecting the erosive wear performance of the hydraulic concrete, the high efficiency and the reliability of testing the wear performance of the hydraulic concrete are improved.

Description

Technical Field

[0001] This invention relates to the field of hydraulic concrete durability testing technology, and in particular to a device and method for testing the scouring and abrasion performance of hydraulic concrete. Background Technology

[0002] Spillway structures, as a major component of reservoir dams, play a crucial role in water passage and flood discharge, and are fundamental to the safe operation of hydraulic engineering structures. However, during long-term service, spillway structures are highly susceptible to concrete crack expansion, surface spalling, and performance degradation due to factors such as water erosion and sediment abrasion. Surveys of typical hydraulic structures have revealed that these parts experience recurring erosion and wear, with some requiring multiple repairs. One reason for this repeated repair work can be attributed to the fact that current erosion and wear tests are insufficient to simulate the complex erosion and abrasion environment, making efficient and reliable simulation testing impossible. Summary of the Invention

[0003] The purpose of this invention is to provide a device and method for testing the erosion and wear performance of hydraulic concrete, so as to solve the problems existing in the prior art and improve the efficiency and reliability of testing the wear performance of hydraulic concrete.

[0004] To achieve the above objectives, the present invention provides the following solution:

[0005] This invention provides a device for testing the erosion and wear performance of hydraulic concrete, comprising a testing chamber and a driving mechanism. The testing chamber has a testing cavity for placing test specimens and erosion media. The driving mechanism includes a driving component, a stirring component, and a transmission component. The transmission component is rotatably disposed within the testing cavity, and at least one test specimen is placed on the transmission component, with each test specimen rotatably or fixedly connected to the transmission component. One end of the driving component can extend into the testing cavity and is detachably connected to the transmission component. The stirring component is detachably disposed on the portion of the driving component located within the testing cavity. When the transmission component and the stirring component are connected, the driving component can drive the corresponding transmission disc and the stirring component to rotate.

[0006] Preferably, when the transmission component and the stirring assembly are connected, the drive component can drive the corresponding transmission disk and the stirring assembly to rotate in opposite directions.

[0007] Preferably, the transmission component includes a transmission gear, a transmission ring disk, and a plurality of driven gears; at least one of the test pieces is rotatably or fixedly connected to the transmission ring disk; the transmission gear is coaxially arranged with the transmission ring disk and is detachably connected to the drive assembly; the plurality of driven gears are distributed on the outer periphery of the transmission gear, and each driven gear is meshed with the outer periphery of the transmission gear and the inner periphery of the transmission ring disk; each driven gear is capable of rotating about its own axis within the detection cavity.

[0008] Preferably, the transmission ring disk has a plurality of insert rods for placing the test piece fixedly distributed circumferentially, each insert rod being adjustable in height, and each insert rod being detachably rotatably provided with a rotating component; when the rotating component is connected to the insert rod, the test piece can be connected to the rotating component so as to rotate relative to the insert rod under the action of fluid; when the rotating component is not connected to the insert rod, the test piece can be fixedly connected to the insert rod.

[0009] Preferably, the detection chamber includes a medium chamber and a water-proof chamber arranged isolated from top to bottom; the medium chamber and the water-proof chamber are isolated by a water-proof layer; the medium chamber is used to fill the flushing medium, and the stirring assembly can stir within the medium chamber; the transmission component is rotatably disposed within the water-proof chamber, and the insertion rod can extend out of the water-proof layer, and the rotating component is disposed within the medium chamber; one end of the driving component can pass through the water-proof layer and be connected to the transmission gear for transmission.

[0010] Preferably, the detection box is movably provided with an opening and closing cover and a transparent observation window, both of which enable the detection chamber to communicate with the outside world; the side wall of the detection box is also provided with an arched drain port that can communicate with the detection chamber, the arched drain port being inclined and with its outer side facing downward.

[0011] Preferably, it further includes a lifting mechanism disposed below the detection box. The lifting mechanism is used to support the drive assembly in adjusting its position vertically so that the drive assembly can be plugged into or disconnected from the transmission component.

[0012] Preferably, the system further includes a limiting component, which comprises two limiting plates and multiple limiting rods. The two limiting plates are respectively disposed on both sides of the driving component. The lower end of each limiting plate is rotatably connected to the lifting mechanism. Each limiting plate is connected to the driving component through at least one limiting rod. The two ends of each limiting rod are rotatably connected to the limiting plate and the driving component, respectively. The upper end of the limiting plate is a limiting end. Limiting portions are provided at different heights on both sides of the driving component that cooperate with the limiting plate. During the process of the lifting mechanism driving the driving component to rise and fall, the limiting rods can rotate to push the corresponding limiting plate to rotate so that the limiting end moves closer to or away from the driving component, so that the limiting end can cooperate with the limiting portions at different heights for limiting, allowing the driving component to be plugged into or disconnected from the transmission component.

[0013] Preferably, it further includes a control mechanism, which is communicatively connected to both the lifting mechanism and the drive component. The control mechanism is capable of controlling the actions of the lifting mechanism and the drive component. The control mechanism is also capable of controlling the action time of the drive component and issuing early warning information that can be acquired by the outside world.

[0014] The present invention also provides a method for using the above-mentioned hydraulic concrete erosion wear performance testing device, comprising the following steps:

[0015] The test piece is placed on the transmission component inside the detection chamber, so that the test piece is rotatably connected to the transmission component. The drive assembly is connected to the stirring assembly and the transmission component. A flushing medium is introduced into the detection chamber. The drive assembly drives the stirring assembly and the transmission component to rotate synchronously, and the test piece can rotate relative to the transmission component under the action of the fluid.

[0016] Alternatively, the test piece can be placed on the transmission component and fixedly connected to the transmission component, the drive assembly can be connected to the stirring assembly, a flushing medium can be introduced into the detection chamber, and the stirring assembly can be driven to rotate by the drive assembly.

[0017] Alternatively, the test piece is placed on the transmission component and rotatably connected to the transmission component, the drive assembly is connected to the transmission component, a flushing medium is introduced into the detection chamber, the drive assembly drives the transmission component to rotate, and the test piece can rotate relative to the transmission component under the action of the fluid.

[0018] The present invention achieves the following technical effects compared to the prior art:

[0019] The device for testing the erosion and wear performance of hydraulic concrete and its method of use provided by this invention have multiple test modes:

[0020] Test Mode 1: The test piece is placed on the transmission component in the test chamber, so that the test piece and the transmission component are rotatably connected. The drive component is connected to the stirring component and the transmission component. The flushing medium is introduced into the test chamber. The drive component drives the stirring component and the transmission component to rotate synchronously. The test piece can rotate relative to the transmission component under the action of the fluid. This allows the surface of the test piece to fully receive the flushing and improves the flushing efficiency.

[0021] Test Mode 2: Place the test piece on the transmission component and fix it to the transmission component. Connect the drive component to the stirring component. Introduce the flushing medium into the test chamber. Drive the stirring component to rotate through the drive component, so that the test piece is flushed on one side.

[0022] Test Mode 3: Place the test piece on the transmission component and rotatably connect it to the transmission component. Connect the drive assembly to the transmission component and introduce the flushing medium into the test chamber. Drive the transmission component to rotate through the drive assembly. The test piece can rotate relative to the transmission component under the action of the fluid. Only the test piece rotates in the flushing medium.

[0023] In this way, multiple test modes can meet the scouring test requirements of different types and scenarios, improve efficiency, reliability and flexibility, and the scouring medium can be selected according to the requirements to meet the scouring test requirements. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in 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.

[0025] Figure 1 This is a schematic diagram of the external structure of the hydraulic concrete erosion and wear performance testing device provided by the present invention.

[0026] Figure 2 This is a schematic diagram of the structure of the test mode one (without test specimen) of the hydraulic concrete scouring and abrasion performance testing device provided by the present invention;

[0027] Figure 3 This is a schematic diagram of the test mode (with test specimen) of the hydraulic concrete scouring and abrasion performance testing device provided by the present invention.

[0028] Figure 4 This is a schematic diagram of the test mode 2 (with test specimen) of the hydraulic concrete scouring and abrasion performance testing device provided by the present invention;

[0029] Figure 5This is a schematic diagram of the test mode three (with test specimen) of the hydraulic concrete scouring and abrasion performance testing device provided by the present invention;

[0030] Figure 6 This is a schematic diagram of the structure of the transmission component provided by the present invention;

[0031] Figure 7 This is a schematic diagram of the structure of the opening and closing cover plate provided by the present invention.

[0032] In the diagram: 1-Detection box; 11-Detection chamber; 111-Media chamber; 112-Waterproof chamber; 113-Waterproof layer; 12-Opening and closing cover; 13-Transparent observation window; 14-Arched drain port; 2-Drive mechanism; 21-Drive assembly; 211-Limiting part; 212-Drive motor; 213-Motor base; 214-Drive rod; 22-Stirring assembly; 23-Transmission component; 231-Transmission gear; 232-Transmission ring; 233-Driven gear; 234-Insertion rod; 235-Rotating part; 236-Fixed plate; 3-Test piece; 4-Lifting mechanism; 41-Piston column; 42-Hydraulic platform; 43-Motor; 44-Oil pump; 45-Overflow valve; 46-Filter; 47-Solenoid directional valve; 5-Limiting assembly; 51-Limiting plate; 52-Limiting rod; 53-Limiting end; 6-Control mechanism. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] The purpose of this invention is to provide a device and method for testing the erosion and wear performance of hydraulic concrete, so as to solve the problems existing in the prior art and improve the efficiency and reliability of testing the wear performance of hydraulic concrete.

[0035] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] Example 1

[0037] This embodiment provides a device for testing the erosion and wear performance of hydraulic concrete. Please refer to [link / reference]. Figure 1The system includes a testing chamber 1 and a driving mechanism 2. The testing chamber 1 has a testing cavity 11 for placing test specimens 3 and flushing media. The driving mechanism 2 includes a driving component 21, a stirring component 22, and a transmission component 23. The transmission component 23 is rotatably disposed within the testing cavity 11, and at least one test specimen 3 is placed on the transmission component 23. Each test specimen 3 can be rotatably or fixedly connected to the transmission component 23. One end of the driving component 21 can extend into the testing cavity 11 and can be detachably connected to the transmission component 23. The stirring component 22 is detachably disposed on the portion of the driving component 21 located within the testing cavity 11. When the transmission component 23 and the stirring component 22 are connected, the driving component 21 can drive the corresponding transmission disk and the stirring component 22 to rotate.

[0038] The hydraulic concrete erosion and wear performance testing device and its usage method provided in this embodiment have multiple test modes:

[0039] Test Mode 1: Please refer to Figure 2 and Figure 3 The test piece 3 is placed on the transmission component 23 in the detection chamber 11, so that the test piece 3 is rotatably connected to the transmission component 23. The drive assembly 21 is connected to the stirring assembly 22 and the transmission component 23. The flushing medium is introduced into the detection chamber 11. The drive assembly 21 drives the stirring assembly 22 and the transmission component 23 to rotate synchronously. The test piece 3 can rotate relative to the transmission component 23 under the action of the fluid. In this way, the surface of the test piece 3 can fully receive the flushing and improve the flushing efficiency.

[0040] Test Mode Two: Please refer to Figure 4 The test piece 3 is placed on the transmission component 23 and fixedly connected to the transmission component 23. The drive component 21 is connected to the stirring component 22. The flushing medium is introduced into the detection chamber 11. The driving component 21 drives the stirring component 22 to rotate, so that the test piece 3 is flushed on one side.

[0041] Test Mode 3: Please refer to Figure 5 The test piece 3 is placed on the transmission component 23 and rotatably connected to the transmission component 23. The drive assembly 21 is connected to the transmission component 23. The flushing medium is introduced into the detection chamber 11. The drive assembly 21 drives the transmission component 23 to rotate. The test piece 3 can rotate relative to the transmission component 23 under the action of the fluid. Only the test piece 3 rotates in the flushing medium.

[0042] In this way, multiple test modes can meet the scouring test requirements of different types and scenarios, improve efficiency, reliability and flexibility, and the scouring medium can be selected according to the requirements to meet the scouring test requirements.

[0043] In the optional embodiments of this example, more preferably, when the transmission component 23 and the stirring component 22 are connected, the drive component 21 can drive the corresponding transmission disk and the stirring component 22 to rotate in opposite directions.

[0044] In the first test mode, the drive component 21 can drive the corresponding transmission disk and the stirring component 22 to rotate in opposite directions; the test piece 3 and the stirring component 22 rotate in opposite directions, the fluid is turbulent, and the test piece 3 can achieve a self-rotation effect due to the driving force of the fluid. The surface of the test piece 3 is more uniformly abraded and the scouring efficiency can be improved.

[0045] In an optional embodiment, more preferably, the transmission component 23 includes a transmission gear 231, a transmission ring disk 232, and a plurality of driven gears 233; at least one test piece 3 is rotatably or fixedly connected to the transmission ring disk 232; the transmission gear 231 is coaxially arranged with the transmission ring disk 232, and the transmission gear 231 is detachably connected to the drive assembly 21; the plurality of driven gears 233 are distributed on the outer periphery of the transmission gear 231, and each driven gear 233 is meshed with the outer periphery of the transmission gear 231 and the inner periphery of the transmission ring disk 232; each driven gear 233 is capable of rotating around its own axis within the detection cavity 11.

[0046] The transmission component 23 is coaxially connected to the transmission gear 231, and the transmission component 23 can drive the transmission gear 231 to rotate in the same direction. Since the transmission gear 231 is connected to the transmission ring disk 232 through multiple driven gears 233, the driven gears 233 rotate around their own axes under the drive of the transmission gear 231, thereby driving the transmission ring disk 232 to rotate in the opposite direction relative to the transmission gear 231, so that the test piece 3 and the stirring assembly 22 rotate in opposite directions, making the fluid turbulent. The test piece 3 is rotatably connected or fixedly connected on the transmission ring disk 232 according to the test requirements, so that the test piece 3 can rotate or be relatively fixed. The upper and lower layers of the transmission component 23 are provided with fixing plates 236, and each driven gear 233 is provided with a ball bearing in the middle. The driven gear 233 is connected to the fixing plate 236 through bolts passing through the ball bearing, so that the driven gear 233 and the fixing plate 236 are fixed in relative position in the circumferential direction, but can rotate relative to the fixing plate 236.

[0047] In the optional solutions of this embodiment, a more preferred option is described in the following description: Figure 6 Multiple insertion rods 234 for placing test specimens 3 are fixedly distributed circumferentially on the transmission ring disk 232. Each insertion rod 234 can adjust its height, and each insertion rod 234 is detachably rotatably provided with a rotating component 235. When the rotating component 235 is connected to the insertion rod 234, the test specimen 3 can be connected to the rotating component 235 so that it can rotate relative to the insertion rod 234 under the action of fluid. When the rotating component 235 is not connected to the insertion rod 234, the test specimen 3 can be fixedly connected to the insertion rod 234.

[0048] Multiple insert rods 234 can meet the scouring test of multiple test pieces 3. Each transmission ring disc 324 can be fixedly connected to one end of the insert rod 234 by welding. The test piece 3 and the insert rod 234 are fixed by insertion. The rotating part 235 can be set as a rotary bearing such as a planar thrust needle roller bearing, and can be detachably nested on the insert rod 234. When it is necessary for the test piece 3 to rotate under the action of fluid, the rotating part 235 is set on the insert rod, and the test piece 3 is inserted into the insert rod 234. The test piece 3 and the insert rod 234 are clearance-fitted, and the bottom end of the test piece 3 can be connected to the rotating part 235 as follows: The test piece 3 is fitted onto the outer circumference of the rotating part 235 or pressed against the rotating part 235 under the action of gravity. The rotating part 235 reduces the rotational friction of the test piece 3, allowing it to rotate under the action of the fluid. When the rotating part 235 is removed, the test piece 3 is pressed against the insertion rod 234 under its own weight, so that the test piece 3 and the insertion rod 234 can be relatively fixed. In addition, in order to accommodate test pieces 3 of different sizes, each insertion rod 234 can be configured to include multiple insertion rods that can be detachably connected in sequence. The insertion rods can be fixed by insertion or threaded connection to achieve connection and support for test pieces 3 of different sizes.

[0049] In an optional embodiment, more preferably, the detection chamber 11 includes a medium chamber 111 and a water-proof chamber 112 arranged separately from top to bottom; the medium chamber 111 and the water-proof chamber 112 are separated by a water-proof layer 113; the medium chamber 111 is used to fill the flushing medium, and the stirring assembly 22 can stir in the medium chamber 111; the transmission component 23 is rotatably arranged in the water-proof chamber 112, and the insertion rod 234 can extend out of the water-proof layer 113, and the rotating component 235 is arranged in the medium chamber 111; one end of the drive assembly 21 can pass through the water-proof layer 113 and be connected to the transmission gear 231 for transmission.

[0050] The medium chamber 111 and the water-proof chamber 112 are separated by a water-proof layer 113. The water-proof chamber 112 facilitates the installation of the transmission component 23 and reduces the influence of fluid on the transmission. The transmission gear 231 has a plug-in interface in the middle, and the upper part of the plug-in interface is sealed and connected to the water-proof layer 113, so that the drive component 21 can be detached and connected to the plug-in interface through the water-proof layer 113 and prevent fluid leakage in the water-proof chamber 112. In addition, the upper end of the plug rod 234 is sealed through the water-proof layer 113, and the rotating component 235 is placed in the medium chamber 111 to enable the installation of the test piece 3. The water-proof layer 113 rotates synchronously with the transmission component 23. Furthermore, a sealing ring can be provided on the peripheral wall of the water-proof layer 113 to achieve a seal and prevent fluid from entering the water-proof chamber 112.

[0051] In the optional scheme of this embodiment, more preferably, the detection box 1 is movably provided with an opening and closing cover 12 and a transparent observation window 13, both of which can enable the detection cavity 11 to communicate with the outside world; the side wall of the detection box 1 is also provided with an arched drain port 14 that can communicate with the detection cavity 11, the arched drain port 14 is inclined and the outer side faces downward.

[0052] Please see below. Figure 7 The opening and closing cover 12 is located on the upper side of the test chamber 1. It adopts a vertically opening hinged cover, which reduces the opening and closing space, saves manpower for moving back and forth, and facilitates the addition of abrasive media. The transparent observation window 13 is made of PVC transparent wear-resistant plate, which is easy to open for operation of internal components and easy to close for observation of rinsing. The sliding rail of the transparent observation window 13 is welded to the inside of the test chamber 1 to realize sliding opening and closing. The arched drain port 14 is connected to the bottom of the medium cavity 111 and is inclined downward at 45°. It is designed as an arched gate, which is conducive to the rapid flow out of difficult-to-clean media such as sand and stones in the rinsing medium after the experiment. This avoids a small amount of liquid accumulation in the steel cylinder after the abrasion experiment, which would cause corrosion of the inner wall of the test chamber 1 and affect the service life of the device.

[0053] In the optional scheme of this embodiment, more preferably, the hydraulic concrete scouring and abrasion performance testing device provided in this embodiment also includes a lifting mechanism 4, which is set below the testing box 1. The lifting mechanism 4 is used to support the drive component 21 to adjust its position in the vertical direction so that the drive component 21 can be plugged into or disconnected from the transmission component 23.

[0054] The drive assembly 21 is positioned above the transmission component 23, and the drive assembly 21 and the transmission component 23 are connected by a plug-in joint. The lifting mechanism 4 is thus configured to achieve the plug-in joint between the drive assembly 21 and the transmission component 23 by raising and lowering the drive assembly 21.

[0055] Specifically, the lifting mechanism 4 includes piston rods 41 and a hydraulic platform 42; the detection box 1 is placed on the hydraulic platform 42, and piston rods 41 are provided on both sides of the detection box 1. The height of the drive component 21 is adjusted by lifting the two piston rods 41. The hydraulic platform 42 is equipped with a motor 43, an oil pump 44, an overflow valve 45, a filter 46, and a solenoid directional valve 47; the oil pump 44 is driven by the motor 43, and the oil inlet of the oil pump 44 is connected to the oil outlet of the filter 46 through an oil pipe; the filter 46 is installed on the oil suction line of the oil pump 44 to filter impurities in the hydraulic oil. To prevent contaminants such as particles from entering the oil pump 44 and subsequent hydraulic systems, reducing wear on hydraulic components and improving system reliability and service life, the oil pump 44's outlet is also connected to the inlet of the solenoid directional valve 47 via an oil pipe. The solenoid directional valve 47 is a key component controlling the flow direction of hydraulic oil. The solenoid directional valve 47 is connected to the piston rod 41. By changing the position of the valve core of the solenoid directional valve 47, the flow direction of hydraulic oil can be changed, thereby controlling the lifting and lowering action of the piston rod 41. In addition, an overflow valve 45 is also provided at the oil pump 44's outlet to protect the hydraulic system.

[0056] In the optional solutions of this embodiment, a more preferred option is described in the following description: Figure 1 The hydraulic concrete erosion wear performance testing device provided in this embodiment also includes a limiting component 5. The limiting component 5 includes two limiting plates 51 and multiple limiting rods 52. The two limiting plates 51 are respectively disposed on both sides of the driving component 21. The lower end of each limiting plate 51 is rotatably connected to the lifting mechanism 4. Each limiting plate 51 is connected to the driving component 21 through at least one limiting rod 52. The two ends of each limiting rod 52 are rotatably connected to the limiting plate 51 and the driving component 21, respectively. The upper end of the limiting plate 51 is a limiting end 53. Limiting portions 211 are provided at different heights on both sides of the driving component 21 that cooperate with the limiting plate 51.

[0057] During the lifting process of the lifting mechanism 4 driving the drive assembly 21, the limiting rod 52 can rotate to push the corresponding limiting plate 51 to rotate so that the limiting end 53 moves closer to or further away from the drive assembly 21, so that the limiting end 53 can cooperate with the limiting part 211 at different heights for limiting, and so that the drive assembly 21 can be inserted into or disconnected from the transmission component 23. Specifically, the limiting end 53 is set as a limiting protrusion, and the limiting part 211 is set as a limiting groove. The limiting protrusion can be embedded in the limiting groove for limiting. Since the drive assembly 21 has two mating positions, one is a downward mating and insertion mating with the transmission component 23, and the other is an upward mating and disengagement mating with the transmission component 23, correspondingly, two limiting parts 211 are set on both sides of the drive assembly 21 to satisfy the limiting of the two mating positions of the drive assembly 21.

[0058] Furthermore, the number of limiting rods 52 is set to four, with two on each of the other two sides of the drive assembly 21. The two limiting rods 52 on one side are rotatably connected to the two limiting plates 51 respectively. The bottom end of the limiting plate 51 is rotatably connected to the hydraulic platform 42 through a pin. One end of each of the two limiting rods 52 on one side of the drive assembly 21 is rotatably connected to the limiting plate 51 through a pin, and the other end of each of the two limiting rods 52 is rotatably connected to the same position in the middle of the drive assembly 21 through a pin. The length of each limiting rod 52 is the same, and each exceeds half the length of the drive assembly 21 along the opposite direction of the two limiting plates 51, so that the limiting rods 52 can push the limiting plates 51 to move.

[0059] Furthermore, the drive assembly 21 provided in this embodiment includes a drive motor 212, a motor base 213, and a drive rod 214. The drive motor 212 is bolted to the motor base 213, and the top of the piston rod 41 is connected to the motor base 213 by bolts or other means to realize the lifting and lowering drive of the drive assembly 21. The drive rod 214 passes through the motor base 213 and its upper end is connected to the drive motor 212. Its lower end can extend into the detection box 1 to realize the insertion and cooperation with the transmission component 23. Correspondingly, the insertion interface between the lower end of the drive rod 214 and the transmission component 23 can be set as a circumferential limiting structure, such as the cooperation of protrusions and grooves, so as to realize synchronous circumferential rotation. The drive motor 212 is a three-phase AC power with a voltage of 380V and a speed range of 500r / min-5000r / min, preferably 1000r / min-4000r / min.

[0060] In addition, the stirring assembly 22 is configured as stirring blades, which can be detachably connected to the drive rod 214 by bolts or clamps. The stirring assembly 22 can also be adjusted to adjust its vertical relative position with the drive rod 214 to adjust different stirring positions, ensuring that the near-bottom flow velocity of the test piece 3 will not be reduced due to the size of the test piece 3 during the grinding process, so that the test piece 3 can achieve a good grinding effect.

[0061] In the optional scheme of this embodiment, more preferably, the hydraulic concrete scouring and abrasion performance testing device provided in this embodiment also includes a control mechanism 6. The control mechanism 6 is communicatively connected to the lifting mechanism 4 and the drive component 21. The control mechanism 6 can control the movement of the lifting mechanism 4 and the drive component 21. The control mechanism 6 can also control the movement time of the drive component 21 and can issue early warning information that can be obtained by the outside world.

[0062] The control mechanism 6 is set as a console. The computer program on the console controls the start of the lifting mechanism 4 and the speed of the drive motor 212. At the same time, the computer program has a built-in warning system. The warning system starts 5 minutes before the end of the grinding time set by the user and continues to warn for 5 minutes. After 5 minutes, the program controls the drive motor 212 to stop running. The warning information can be issued by a buzzer or a warning light. This facilitates automated detection. In addition, the computer program of the control mechanism 6 can also be equipped with other apps to realize other remote control functions.

[0063] Furthermore, limit switches, such as direct-acting limit switches, can be installed in each limiting groove. When the limiting protrusion can be embedded in the limiting groove for limiting, the limit switch can be triggered to send a limit signal. The limit switch will send a signal to the control mechanism 6 to control the drive component 21 or the lifting mechanism 4 to stop, thereby realizing automated control. In addition, the control mechanism 6 can preset limit parameters under different working conditions (such as grinding time, stroke limit, pressure threshold, etc.). When the system reaches the set conditions, the operating mode is switched or the system is started and stopped in stages to distribute the system load. This ensures the continuity of the grinding process and allows the system to cool down through intermittent shutdowns, greatly reducing the risk of wear and tear from long-term operation.

[0064] Example 2

[0065] This embodiment provides a method for using the hydraulic concrete erosion and wear performance testing device provided in Embodiment 1, as detailed below:

[0066] Test Mode 1, the specific testing steps are as follows:

[0067] Step 1: Before conducting the concrete erosion and wear performance test, the test specimen 3 is pretreated. This mainly includes: drilling a hole at the bottom of the test specimen 3 with a height equal to half the height of the test specimen 3, drying the test specimen 3 at 50℃ for 12 hours and then cooling it to room temperature, weighing the test specimen 3, and recording the surface morphology of the test specimen using 3D scanning analysis technology;

[0068] Step 2: Insert the test piece 3 into the insertion rod 234, as follows:

[0069] Step 2.1: First, open the transparent observation window 13;

[0070] Step 2.2: Adjust the number of connector rods according to the height of test piece 3. Each connector rod can be 50mm long, ensuring that the height of connector rods 234 is not less than half the height of test piece 3.

[0071] Step 2.3: Then rotate the transmission component 23 and insert the test piece 3 into the insertion rod 234 in sequence, ensuring that the bottom end of the test piece 3 is in complete contact with the rotating component 235, and close the transparent observation window 13;

[0072] Step 3: Turn on the computer, log in to the program, manipulate the piston rod 41 to engage the drive rod 214 with the transmission wheel 231, and set the speed of the drive motor 211.

[0073] Step 4: Open the opening and closing cover 12 of the ring-shaped test steel cylinder, i.e., test chamber 1, and add the abrasive medium.

[0074] Step 5: Turn on the drive motor 211. The stirring component 22 drives the water flow medium to wash the test specimen 3. The stirring component 22 and the test specimen 3 can rotate in opposite directions in the water flow carrying sand, stone, mud or composite medium, so that the water body forms turbulence. The test specimen 3 can achieve the self-rotation effect due to the driving of the water flow, which improves the washing efficiency and ensures the uniformity of the washing effect on the surface of the concrete specimen.

[0075] Step 6: After the test, first turn off the drive motor 211 and disconnect the power supply, open the arched drain port 14, and after the water flows out, open the transparent observation window 13, take out the test piece 3 after grinding, and after drying, test the morphology and weigh the test piece 3 again.

[0076] The operation steps for test mode two are as follows:

[0077] Step 1: Same as in Pattern 1.

[0078] Step 2: Insert the test piece 3 into the insertion rod 234, as follows:

[0079] Step 2.1: First, open the transparent observation window 13;

[0080] Step 2.2: Then rotate the transmission component 23, remove the rotating component 235 in sequence, insert the test piece 3 into the insertion rod 234 in sequence, and close the transparent observation window 13;

[0081] Step 3: Turn on the computer and use the program to raise the piston rod 41, so that the drive rod 214 is separated from the transmission wheel 231. Set the speed of the drive motor 211. User information can be reserved in the control program so that the user can be reminded after the operation is completed.

[0082] Step 5: Turn on the drive motor 211. The stirring component 22 drives the water flow medium to scour the test piece 3. At this time, the stirring component 22 rotates while the test piece 3 remains stationary, achieving the effect of scourting the test piece 3 on one side.

[0083] Step 6: After the test, first turn off the drive motor 211 and disconnect the power supply, open the arched drain port 14, and after the water flows out, open the transparent observation window 13, take out the test piece 3 after grinding, and after drying, test the morphology and weigh the test piece 3 again.

[0084] The operation steps for test mode three are as follows:

[0085] In Mode 3, the mixing component 22 is disassembled based on Mode 1, and the remaining steps are the same as in Mode 1; at this time, only the test piece 3 rotates in the abrasive medium to simulate the abrasive effect on cement concrete pavement.

[0086] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A device for testing the erosion and wear performance of hydraulic concrete, characterized in that: include: The test chamber (1) has a test cavity (11) for placing the test piece (3) and the flushing medium; and The driving mechanism (2) includes a driving component (21), a stirring component (22), and a transmission component (23). The transmission component (23) is rotatably disposed in the detection chamber (11). At least one test piece (3) is placed on the transmission component (23), and each test piece (3) can be rotatably connected or fixedly connected to the transmission component (23). One end of the driving component (21) can extend into the detection chamber (11) and can be detachably connected to the transmission component (23). The stirring component (22) is detachably disposed on the part of the driving component (21) located in the detection chamber (11). When the transmission component (23) and the stirring component (22) are connected, the driving component (21) can drive the corresponding transmission disk and the stirring component (22) to rotate.

2. The hydraulic concrete erosion and wear performance testing device according to claim 1, characterized in that: When the transmission component (23) and the stirring assembly (22) are connected, the drive component (21) can drive the corresponding transmission disk and the stirring assembly (22) to rotate in opposite directions.

3. The hydraulic concrete erosion wear performance testing device according to claim 2, characterized in that: The transmission component (23) includes a transmission gear (231), a transmission ring disc (232), and multiple driven gears (233); At least one of the test pieces (3) is rotatably or fixedly connected to the transmission ring disk (232); the transmission gear (231) is coaxially arranged with the transmission ring disk (232) and is detachably connected to the drive assembly (21); a plurality of driven gears (233) are distributed on the outer periphery of the transmission gear (231), and each driven gear (233) is meshed with the outer periphery of the transmission gear (231) and the inner periphery of the transmission ring disk (232); each driven gear (233) is capable of rotating around its own axis in the detection cavity (11).

4. The hydraulic concrete erosion and wear performance testing device according to claim 3, characterized in that: The transmission ring disk (232) has a plurality of insert rods (234) fixedly distributed along the circumference for placing the test piece (3). Each insert rod (234) can adjust its own height, and each insert rod (234) is detachably rotatably provided with a rotating part (235). When the rotating part (235) is connected to the insert rod (234), the test piece (3) can be connected to the rotating part (235) so that it can rotate relative to the insert rod (234) under the action of fluid. When the rotating part (235) is not connected to the insert rod (234), the test piece (3) can be fixedly connected to the insert rod (234).

5. The hydraulic concrete erosion wear performance testing device according to claim 4, characterized in that: The detection chamber (11) includes a medium chamber (111) and a water-proof chamber (112) arranged in isolation from top to bottom; the medium chamber (111) and the water-proof chamber (112) are isolated by a water-proof layer (113); the medium chamber (111) is used to fill the flushing medium, and the stirring assembly (22) can stir in the medium chamber (111); the transmission component (23) is rotatably arranged in the water-proof chamber (112), and the insertion rod (234) can extend out of the water-proof layer (113), and the rotating component (235) is arranged in the medium chamber (111); one end of the driving assembly (21) can pass through the water-proof layer (113) and be connected to the transmission gear (231) for transmission.

6. The hydraulic concrete erosion wear performance testing device according to claim 1, characterized in that: The detection box (1) is movably provided with an opening and closing cover (12) and a transparent observation window (13). Both the opening and closing cover (12) and the transparent observation window (13) can make the detection chamber (11) communicate with the outside. The side wall of the detection box (1) is also provided with an arched drain port (14) that can communicate with the detection chamber (11). The arched drain port (14) is inclined and the outer side faces downward.

7. The device for testing the erosion and wear performance of hydraulic concrete according to claim 1, characterized in that: It also includes a lifting mechanism (4) located below the detection box (1). The lifting mechanism (4) is used to support the drive assembly (21) in adjusting its position in the vertical direction so that the drive assembly (21) can be plugged into or disconnected from the transmission component (23).

8. The hydraulic concrete erosion wear performance testing device according to claim 7, characterized in that: It also includes a limiting component (5), which includes two limiting plates (51) and multiple limiting rods (52). The two limiting plates (51) are respectively disposed on both sides of the driving component (21). The lower end of each limiting plate (51) is rotatably connected to the lifting mechanism (4). Each limiting plate (51) is connected to the driving component (21) through at least one limiting rod (52). The two ends of each limiting rod (52) are rotatably connected to the limiting plate (51) and the driving component (21). The upper end of the limiting plate (51) is a limiting end (53). The two sides of the driving component (21) that cooperate with the limiting plate (51) are provided with limiting parts (211) at different heights. During the process of the lifting mechanism (4) driving the drive assembly (21) to lift, the limiting rod (52) can rotate to push the corresponding limiting plate (51) to rotate so that the limiting end (53) moves closer to or further away from the drive assembly (21), so that the limiting end (53) can cooperate with the limiting part (211) at different heights to limit, so that the drive assembly (21) can be plugged into or disconnected from the transmission component (23).

9. The hydraulic concrete erosion wear performance testing device according to claim 7, characterized in that: It also includes a control mechanism (6), which is communicatively connected to the lifting mechanism (4) and the drive component (21). The control mechanism (6) can control the movement of the lifting mechanism (4) and the drive component (21). The control mechanism (6) can also control the movement time of the drive component (21) and issue early warning information that can be obtained by the outside world.

10. A method of using the hydraulic concrete erosion wear performance testing device as described in any one of claims 1-9, characterized in that: Includes the following steps: The test piece (3) is placed on the transmission component (23) in the detection chamber (11), so that the test piece (3) is rotatably connected to the transmission component (23). The drive assembly (21) is connected to the stirring assembly (22) and the transmission component (23). A flushing medium is introduced into the detection chamber (11). The drive assembly (21) drives the stirring assembly (22) and the transmission component (23) to rotate synchronously, and the test piece (3) can rotate relative to the transmission component (23) under the action of the fluid. Alternatively, the test piece (3) can be placed on the transmission component (23) and fixedly connected to the transmission component (23), the drive assembly (21) can be connected to the stirring assembly (22), the flushing medium can be introduced into the detection chamber (11), and the stirring assembly (22) can be driven to rotate by the drive assembly (21). Alternatively, the test piece (3) is placed on the transmission component (23) and rotatably connected to the transmission component (23), the drive assembly (21) is connected to the transmission component (23), a flushing medium is introduced into the detection chamber (11), the transmission component (23) is driven to rotate by the drive assembly (21), and the test piece (3) is able to rotate relative to the transmission component (23) under the action of the fluid.

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