A device for detecting the strength of cement

By designing a cement strength testing device that includes detection, rotation, and cleaning mechanisms, the problem of low detection efficiency in existing technologies has been solved, achieving uninterrupted detection and improved device cleanliness.

CN224681978UActive Publication Date: 2026-08-25浙江红狮建材科技有限公司
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202521582601.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-07-28
Publication Date
2026-08-25
Estimated Expiration
2035-07-28

AI Technical Summary

Technical Problem

Existing cement testing equipment requires shutdown and cleaning before testing another cement module if the test result is unsatisfactory, resulting in low testing efficiency.

Method used

A cement strength testing device was designed, which includes a detection, rotation and cleaning mechanism. By setting up a cross placement platform, guide rod and hydraulic system, uninterrupted detection can be achieved, and a cleaning mechanism is provided to ensure the cleanliness of the device.

Benefits of technology

It enables uninterrupted testing of cement modules, improving testing efficiency, and maintains the cleanliness of the device through a cleaning mechanism, avoiding the hassle of downtime for cleaning.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224681978U_ABST
    Figure CN224681978U_ABST
Patent Text Reader

Abstract

The application provides a cement strength detection device, and relates to the field of cement detection. The cement strength detection device comprises a detection table, a detection mechanism arranged in the detection table, rotating mechanisms arranged on the two sides of the detection table, a rotating mechanism connected with the detection mechanism, and a cleaning mechanism arranged on one side of the detection table. The detection mechanism comprises a base arranged in the detection table, a rotating shaft penetrating through the surface of the base and rotatably connected to the base, a cross-shaped placement table fixedly connected to the surface of the rotating shaft, an installation plate arranged above the base, a driving oil cylinder fixedly connected to the surface of the installation plate, an output end of the driving oil cylinder slidably connected to the inside of the installation plate and penetrating through the surface of the installation plate, and a pressing plate fixedly connected to the output end of the driving oil cylinder. The detection mechanism is arranged to realize the effect that the device continuously detects cement modules, and solves the problem that the cement modules need to be placed and detected in the prior art after the device is stopped, thereby reducing the cement module detection efficiency.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This utility model relates to the field of cement testing, and more specifically, to a cement strength testing device. Background Technology

[0002] To ensure the quality of construction projects, the cement products used must be inspected, and the strength of cement is an important indicator for evaluating its quality.

[0003] However, existing cement testing devices only have one cement placement platform, which means that the device can only squeeze one cement module at a time. When the test result of the cement module is not good, and another cement module needs to be tested, the machine often needs to be stopped and the device cleaned before another cement module can be placed for testing, which is inefficient.

[0004] Therefore, we have made improvements to this and proposed a cement strength testing device. Utility Model Content

[0005] The purpose of this invention is to solve the problem that when the test results of a cement module are not good, it is often necessary to stop the machine and clean the device when testing another cement module.

[0006] In order to achieve the above-mentioned utility model objectives and improve the above-mentioned problems, this utility model provides a cement strength testing device, including a testing platform, a testing mechanism is provided inside the testing platform, a rotating mechanism is provided on both sides of the testing platform, the rotating mechanism is connected to the testing mechanism, and a cleaning mechanism is provided on one side of the testing platform.

[0007] The testing mechanism includes a base located inside the testing platform. A rotating shaft is rotatably connected inside the base and passes through the surface of the base. A cross-shaped placement platform is fixedly connected to the surface of the rotating shaft. A mounting plate is set on top of the base. A drive cylinder is fixedly connected to the surface of the mounting plate. The output end of the drive cylinder passes through the surface of the mounting plate and is slidably connected to the inside of the mounting plate. A pressure plate is fixedly connected to the output end of the drive cylinder. Two guide rods are fixedly connected to the surface of the pressure plate. Two guide sleeves protruding from the surface of the base are rotatably connected inside the base. The surfaces of the guide rods slide against the inner walls of the guide rods.

[0008] As a preferred technical solution of this application, the surface of the cross-shaped placement platform is provided with four placement grooves arranged equidistantly in a circle, and the inner wall of the placement grooves is provided with a through groove penetrating the surface of the cross-shaped placement platform.

[0009] As a preferred technical solution of this application, the base is characterized by having a sliding rod fixedly connected to its surface, and the inner wall of the testing platform having an arc-shaped groove, wherein the surface of the sliding rod is slidably connected to the inner wall of the groove.

[0010] As a preferred technical solution of this application, the guide rod is characterized in that four arc-shaped grooves and vertical grooves are arranged circumferentially at equal intervals on the surface of the guide rod. The arc-shaped grooves and vertical grooves are interconnected. The depth of the arc-shaped grooves gradually decreases from low to high, and the depth of the upper end of the arc-shaped groove is shallower than the depth of the vertical groove, while the depth of the lower end of the arc-shaped groove is deeper than the depth of the lower end of the vertical groove. The guide rod is also characterized by four extension grooves arranged circumferentially at equal intervals on the surface of the guide rod. The extension grooves are interconnected with the vertical grooves and are located above the vertical grooves. Two telescopic rods are fixedly connected to the inner wall of the guide sleeve, and the surfaces of the telescopic rods slide against the inner walls of the arc-shaped grooves, extension grooves, and vertical grooves.

[0011] As a preferred technical solution of this application, the guide sleeve is fixedly connected to a first gear at one end inside the base, and an intermediate gear is rotatably connected inside the base. The surface of the intermediate gear meshes with the surface of the first gear, and a second gear is fixedly connected to one end of the rotating shaft inside the base. The surface of the second gear also meshes with the surface of the intermediate gear.

[0012] As a preferred technical solution of this application, the rotating mechanism includes a fixed plate, a vertical plate is fixedly connected to the surface of the fixed plate, a rack is slidably connected inside the vertical plate, a drive shaft is rotatably connected inside the fixed plate and passes through the surface of the fixed plate, a flip gear that meshes with the rack is fixedly connected to one end of the drive shaft, and the end of the drive shaft that is away from and close to the mounting plate is fixedly connected to the surface of the mounting plate.

[0013] As a preferred technical solution of this application, the surface of the testing platform is fixedly connected to a hydraulic cylinder, the output end of the hydraulic cylinder passes through the surface of the fixed plate and is slidably connected to the inside of the fixed plate, and the output end of the hydraulic cylinder is fixedly connected to the bottom of the rack.

[0014] As a preferred technical solution of this application, the cleaning mechanism includes a water pump fixedly installed on the surface of the testing platform, a water outlet pipe fixedly connected to the water outlet end of the water pump, the water outlet pipe being installed on the surface of the testing platform, a nozzle fixedly connected to the end of the water outlet pipe away from the water pump, a water inlet pipe fixedly connected to the water inlet end of the water pump, and the end of the water inlet pipe away from the water pump being fixedly connected to and communicating with the interior of the testing platform.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] In the scheme of this application:

[0017] 1. By setting up a detection mechanism, the device can continuously detect cement modules, solving the problem in the existing technology that requires stopping the machine before another cement module can be placed for detection, thus reducing the detection efficiency of cement modules;

[0018] 2. The rotating and cleaning mechanisms enable the cleaning of the testing mechanism and the interior of the testing platform, effectively ensuring the overall cleanliness of the device and preventing it from becoming cluttered and affecting its use. Attached Figure Description

[0019] Figure 1 A schematic diagram of the cement strength testing device provided in this application;

[0020] Figure 2 A schematic diagram of the internal structure of the testing platform in the cement strength testing device provided in this application;

[0021] Figure 3 A schematic diagram of the surface structure of the guide rod in the cement strength testing device provided in this application;

[0022] Figure 4 This is a schematic diagram of the internal structure of the base in the cement strength testing device provided in this application.

[0023] The image shows:

[0024] 1. Testing table; 2. Rotating mechanism; 201. Hydraulic cylinder; 202. Fixing plate; 203. Rack;

[0025] 3. Testing mechanism; 301. Drive cylinder; 302. Mounting plate; 303. Pressure plate; 304. Guide rod; 305. Guide sleeve; 306. Slide groove; 307. Sliding rod; 308. Base; 309. Rotating shaft; 310. Cross placement platform; 311. Placement groove; 312. Through groove; 313. Telescopic rod; 314. Vertical groove; 315. Arc groove; 316. Extension groove; 317. Gear;

[0026] 4. Cleaning mechanism; 401. Outlet pipe; 402. Water pump; 403. Inlet pipe. Detailed Implementation

[0027] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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 should fall within the protection scope of the present invention.

[0028] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0029] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0030] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0031] Example 1

[0032] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 A cement strength testing device includes a testing platform 1 with casters at the bottom for easy movement and relocation. The testing platform 1 has a testing mechanism 3 inside, and rotating mechanisms 2 on both sides for connecting to the testing mechanism 3, allowing the testing mechanism 3 to be removed for subsequent cleaning. A cleaning mechanism 4 is located on one side of the testing platform 1 to clean its interior and ensure overall cleanliness.

[0033] Example 2

[0034] The cement strength testing device provided in Example 1 has been further optimized, specifically, as follows: Figure 2 As shown, the testing mechanism 3 includes a base 308 located inside the testing platform 1. A rotating shaft 309 is rotatably connected inside the base 308 and passes through the surface of the base 308. A cross-shaped placement platform 310 is fixedly connected to the surface of the rotating shaft 309 to provide placement space for the cement module.

[0035] Furthermore, such as Figure 2 As shown, the surface of the cross-shaped placement platform 310 has four placement grooves 311 arranged equidistantly in a circle to position the cement modules for installation, ensuring that the subsequent device can smoothly crush the cement modules. The inner wall of the placement groove 311 has a through groove 312 that penetrates the surface of the cross-shaped placement platform 310. The through groove 312 allows cement debris in the placement groove 311 to be flushed out when the subsequent cleaning mechanism 4 washes the cross-shaped placement platform 310, thus facilitating the cleaning of the device by the staff and improving the device's performance.

[0036] Furthermore, such as Figure 2As shown, a mounting plate 302 is provided above the base 308. A drive cylinder 301 is fixedly connected to the surface of the mounting plate 302. The output end of the drive cylinder 301 passes through the surface of the mounting plate 302 and is slidably connected to the interior of the mounting plate 302. A pressure plate 303 is fixedly connected to the output end of the drive cylinder 301 to compress the cement module. At the same time, a pressure sensor is provided on the pressure plate 303. Both the pressure sensor 8 and the drive cylinder 5 are connected to the control system signal, so that the drive cylinder 5 can gradually pressurize the cement module. Meanwhile, the pressure sensor 8 can transmit the pressure value to facilitate the staff to calculate or judge the strength of the cement module.

[0037] Furthermore, such as Figure 2 As shown, two guide rods 304 are fixedly connected to the surface of the pressure plate 303, and two guide sleeves 305 protruding from the surface of the base 308 are rotatably connected inside the base 308. The surface of the guide rod 304 slides against the inner wall of the guide rod 304, thereby guiding the movement of the pressure plate 303 and ensuring the smooth operation of the device.

[0038] Furthermore, such as Figure 2 As shown, a sliding rod 307 is fixedly connected to the surface of the base 308, and an arc-shaped groove 306 is provided on the inner wall of the detection table 1. The surface of the sliding rod 307 is slidably connected to the inner wall of the groove 306 to support the base 308.

[0039] Furthermore, such as Figure 3 As shown, the surface of the guide rod 304 has four circumferentially equidistant arc-shaped grooves 315 and vertical grooves 314. The arc-shaped grooves 315 and vertical grooves 314 are interconnected. The depth of the arc-shaped grooves 315 gradually decreases from low to high, and the depth of the upper end of the arc-shaped groove 315 is shallower than the depth of the vertical groove 314, while the depth of the lower end of the arc-shaped groove 315 is deeper than the depth of the lower end of the vertical groove 314. This creates a step at the connection between the vertical groove 314 and the arc-shaped groove 315, ensuring the smooth operation of the device. The surface of the guide rod 304 also has four circumferentially equidistant extension grooves 316, which are interconnected with the vertical grooves 314. The extension groove 316 is located above the vertical groove 314. Two telescopic rods 313 are fixedly connected to the inner wall of the guide sleeve 305. The surface of the telescopic rod 313 slides against the inner wall of the arc groove 315, the extension groove 316 and the vertical groove 314. The telescopic rod 313 includes an inner telescopic rod, an outer telescopic rod and a return spring. The inner telescopic rod can slide inside the outer telescopic rod, thereby changing the length of the telescopic rod 313. The return spring is fixed between the inner telescopic rod and the outer telescopic rod, so that the telescopic rod 313 can return to its original shape. This is a conventional technical means, so it will not be discussed in detail here.

[0040] Furthermore, such as Figure 4As shown, the guide sleeve 305 is fixedly connected to a first gear 318 at one end inside the base 308, and an intermediate gear 317 is rotatably connected inside the base 308. The surface of the intermediate gear 317 meshes with the surface of the first gear 318. The rotating shaft 309 is fixedly connected to a second gear 319 at one end inside the base 308, and the surface of the second gear 319 also meshes with the surface of the intermediate gear 317.

[0041] Example 3

[0042] The cement strength testing devices provided in Examples 1 and 2 have been further optimized, such as... Figure 1 and Figure 2 As shown, the rotating mechanism 2 includes a fixed plate 202, a vertical plate 204 fixedly connected to the surface of the fixed plate 202, and a rack 203 slidably connected inside the vertical plate 204. The vertical plate 204 guides the movement of the rack 203. A drive shaft 206 rotatably connects inside the fixed plate 202, penetrating the surface of the fixed plate 202. One end of the drive shaft 206 is fixedly connected to a reversing gear 205 that meshes with the rack 203. The end of the drive shaft 206 away from and close to the mounting plate 302 is fixedly connected to the surface of the mounting plate 302. Thus, when the drive shaft 206 rotates, it can drive the detection mechanism 3 to rotate, thereby allowing the detection mechanism 3 to be removed from the detection table 1, which facilitates subsequent cleaning of the interior of the detection table 1.

[0043] Furthermore, such as Figure 1 and Figure 2 As shown, a hydraulic cylinder 201 is fixedly connected to the surface of the testing table 1. The output end of the hydraulic cylinder 201 passes through the surface of the fixed plate 202 and is slidably connected to the inside of the fixed plate 202. The output end of the hydraulic cylinder 202 is fixedly connected to the bottom of the rack 203 to drive the rack 203 to move.

[0044] Example 4

[0045] The cement strength testing devices provided in Examples 1, 2, and 3 have been further optimized, such as... Figure 1 and Figure 2As shown, the cleaning mechanism 4 includes a water pump 402 fixedly installed on the surface of the testing platform 1. The outlet end of the water pump 402 is fixedly connected to a water outlet pipe 401, which is installed on the surface of the testing platform 1. The end of the water outlet pipe 401 away from the water pump 402 is fixedly connected to a nozzle for discharging water and rinsing the cement residue on the testing mechanism 3. The inlet end of the water pump 402 is fixedly connected to an inlet pipe 403. The end of the inlet pipe 403 away from the water pump 402 is fixedly connected to the interior of the testing platform 1 and communicates with the interior of the testing platform 1. At the same time, a filter screen is fixedly connected to the inner wall of the testing platform 1 to filter the water after rinsing, so that impurities can be retained on the filter screen and will not enter the bottom of the testing platform 1. This allows the device to recycle the water after rinsing, saving water resources.

[0046] The cement strength testing device provided by this utility model is used as follows:

[0047] When performing strength testing on cement modules, the cement modules to be tested are first placed sequentially into the placement groove 311. Then, the drive cylinder 301 is activated, which in turn drives the pressure plate 303 to descend, thereby driving the guide rod 304 to slide down in the guide groove 305. Because the telescopic rod 313 is blocked by the step between the vertical groove 314 and the arc groove 315, the telescopic rod 313 does not slide directly along the vertical groove 314, but slides in the arc groove 315. This causes the inner wall of the arc groove 315 to squeeze and push the surface of the telescopic rod 313. This drives the guide sleeve 305 to rotate. Because the depth of the arc-shaped groove 315 gradually decreases from low to high, the telescopic rod 313 gradually contracts as it slides within the arc-shaped groove 315. This causes the return spring in the telescopic rod 313 to be gradually compressed until it enters the vertical groove 314. Since the depth of the vertical groove 314 is greater than the depth of the upper end of the arc-shaped groove 315, the telescopic rod 313 gains a certain amount of return space. Under the elastic force of the return spring, the telescopic rod 313 extends to a certain extent, but does not fully return to its original position. Meanwhile, the guide sleeve 305... While rotating, the first gear 318 is driven to rotate, and the intermediate gear 317 and the second gear 319 drive the rotating shaft 309 to rotate, thereby driving the cross placement platform 310 to rotate and causing the cement module to rotate. This causes the cement module to gradually move to the underside of the pressure plate 303. After the cross placement platform 310 rotates 90 degrees, the cement module moves to the underside of the pressure plate 303. At this time, the telescopic rod 313 moves to the uppermost end of the arc groove 315. Then, the pressure plate 303 continues to descend, and the telescopic rod 313 slides into the extension groove 3. At the connection between 16 and the vertical groove 314, since the depth of the vertical groove 314 and the extension groove 316 is shallower than the depth of the lower end of the arc groove 315, the telescopic rod 313 is slightly reset. As the pressure plate 303 continues to descend, it gradually presses the cement module. The extension groove 316 provides space for the pressure plate 303 to continue to approach the cement module, so that the cement module is limited to below the pressure plate 303, while also providing space for the pressure plate 303 to continue to press down on the cement module, thus ensuring the orderly operation of the device.

[0048] After the test is completed, the pressure plate 303 rises, which drives the guide rod 304 to slide upward in the guide sleeve 305. At the same time, the telescopic rod 313 slides in the vertical groove 314 and the extension groove 316, and enters the lower end of the next arc groove 315 again. Then, under the elastic force of the return spring, the telescopic rod 313 returns to its original state, waiting for the next operation. Thus, when the device is in use, multiple cement modules can be placed at one time. After the cement module is tested, another cement module can be automatically sent to the bottom of the pressure plate 303. This allows the device to continuously test cement modules without stopping to replace them, thereby improving the testing efficiency of the cement modules.

[0049] When it is necessary to clean the inside of the testing station 1, the hydraulic cylinder 201 is activated to push the rack 203 to move. Since the rack 203 meshes with the reversing gear 205, it drives the drive shaft 206 to rotate, thereby moving the testing mechanism 3 out of the testing station 1. Then, the cleaning mechanism 4 can be used to rinse the inside of the testing station 1.

[0050] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0051] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. A cement strength testing device, characterized in that, It includes a testing table (1), a testing mechanism (3) is provided inside the testing table (1), a rotating mechanism (2) is provided on both sides of the testing table (1), the rotating mechanism (2) is connected to the testing mechanism (3), and a cleaning mechanism (4) is provided on one side of the testing table (1). The testing mechanism (3) includes a base (308) located inside the testing table (1). The base (308) is rotatably connected to a rotating shaft (309) that passes through the surface of the base (308). A cross-shaped placement platform (310) is fixedly connected to the surface of the rotating shaft (309). An installation plate (302) is provided above the base (308). A driving cylinder (301) is fixedly connected to the surface of the installation plate (302). The output end of the driving cylinder (301) passes through the surface of the installation plate (302) and is slidably connected to the interior of the installation plate (302). A pressure plate (303) is fixedly connected to the output end of the driving cylinder (301). Two guide rods (304) are fixedly connected to the surface of the pressure plate (303). Two guide sleeves (305) protruding from the surface of the base (308) are rotatably connected to the interior of the base (308). The surface of the guide rod (304) slides against the inner wall of the guide rod (304).

2. The cement strength testing device according to claim 1, characterized in that, The surface of the cross-shaped placement platform (310) is provided with four placement slots (311) arranged equidistantly in a circle, and the inner wall of the placement slots (311) is provided with through slots (312) that penetrate the surface of the cross-shaped placement platform (310).

3. The cement strength testing device according to claim 2, characterized in that, A sliding rod (307) is fixedly connected to the surface of the base (308), and an arc-shaped groove (306) is opened on the inner wall of the detection table (1). The surface of the sliding rod (307) is slidably connected to the inner wall of the groove (306).

4. The cement strength testing device according to claim 3, characterized in that, The guide rod (304) has four circumferentially equidistant arc-shaped grooves (315) and vertical grooves (314) on its surface. The arc-shaped grooves (315) and vertical grooves (314) are interconnected. The depth of the arc-shaped grooves (315) gradually decreases from low to high. The depth of the upper end of the arc-shaped grooves (315) is shallower than the depth of the vertical grooves (314), and the depth of the lower end of the arc-shaped grooves (315) is deeper than the depth of the lower end of the vertical grooves (314). The guide rod (304) has four circumferentially equidistant extension grooves (316) on its surface. The extension grooves (316) are interconnected with the vertical grooves (314), and the extension grooves (316) are located above the vertical grooves (314). The inner wall of the guide sleeve (305) is fixedly connected to two telescopic rods (313). The surface of the telescopic rods (313) slides against the inner walls of the arc-shaped grooves (315), extension grooves (316), and vertical grooves (314).

5. A cement strength testing device according to claim 4, characterized in that, The guide sleeve (305) is fixedly connected to a first gear (318) at one end inside the base (308). An intermediate gear (317) is rotatably connected inside the base (308). The surface of the intermediate gear (317) meshes with the surface of the first gear (318). The rotating shaft (309) is fixedly connected to a second gear (319) at one end inside the base (308). The surface of the second gear (319) also meshes with the surface of the intermediate gear (317).

6. The cement strength testing device according to claim 5, characterized in that, The rotating mechanism (2) includes a fixed plate (202), a vertical plate (204) is fixedly connected to the surface of the fixed plate (202), a rack (203) is slidably connected inside the vertical plate (204), a drive shaft (206) is rotatably connected inside the fixed plate (202) and passes through the surface of the fixed plate (202), a reversing gear (205) that meshes with the rack (203) is fixedly connected to one end of the drive shaft (206), and the end of the drive shaft (206) away from and close to the mounting plate (302) is fixedly connected to the surface of the mounting plate (302).

7. A cement strength testing device according to claim 6, characterized in that, A hydraulic cylinder (201) is fixedly connected to the surface of the testing platform (1). The output end of the hydraulic cylinder (201) passes through the surface of the fixing plate (202) and is slidably connected to the inside of the fixing plate (202). The output end of the hydraulic cylinder (201) is fixedly connected to the bottom of the rack (203).

8. A cement strength testing device according to claim 7, characterized in that, The cleaning mechanism (4) includes a water pump (402) fixedly installed on the surface of the testing platform (1). The water outlet end of the water pump (402) is fixedly connected to a water outlet pipe (401). The water outlet pipe (401) is installed on the surface of the testing platform (1). A nozzle is fixedly connected to the end of the water outlet pipe (401) away from the water pump (402). A water inlet pipe (403) is fixedly connected to the water inlet end of the water pump (402). The end of the water inlet pipe (403) away from the water pump (402) is fixedly connected to the interior of the testing platform (1) and communicates with the interior of the testing platform (1).