Full-automatic soaking and drying circulating equipment for sandstone firmness test

Abstract

The invention relates to the technical field of sandstone firmness tests, in particular to sandstone firmness test full-automatic soaking and drying circulation equipment which comprises a test device main body, a through opening penetrating into the test device main body, a mounting opening formed in the inner bottom surface of the test device main body and a test frame mounted in the mounting opening. A filter shell used for containing gravel is installed in the test frame body, a heating device used for heating the test device body is arranged in the test device body, a cabinet door connected with the test device body through a hinge is arranged on one side of the through opening, and a vibration device used for vibrating the test frame body is arranged at the upper end in the test device body. A connecting structure used for enabling the test frame body to be conveniently separated from the vibration device is arranged between the vibration device and the test frame body, the vibration device is connected with the test frame body through the connecting structure, and a plugging structure used for enabling the test frame body to be conveniently separated from the test device body is arranged at the position, located at the lower end of the through opening, of the test device body. The device can be vibrated by the vibration device.

Description

Technical Field

[0001] The present application relates to the technical field of sand and gravel solidity test, and in particular to a fully automatic immersion and drying circulation equipment for sand and gravel solidity test. Background Art

[0002] The fully automatic immersion and drying cycle equipment for sand and gravel solidity test has a main structure including a test device body, a through opening that passes through the interior of the test device body, an installation opening provided on the bottom surface of the interior of the test device body, and a test frame installed in the installation opening. Leakage holes and installation holes are evenly provided inside the test frame. A filter shell for placing sand and gravel is installed in the installation hole. A heating device for heating the test device body is provided in the test device body. Sand and gravel are placed in the filter shell and sodium sulfate solution is added to the test frame. The test device body is heated by starting the heating device. After the heating is completed, the sodium sulfate solution is discharged, and the sand and gravel are dried by the heating device. Then the test device body is quickly cooled to complete the immersion and drying test on the sand and gravel.

[0003] However, during the heating process, the sand and gravel are immersed in the sodium sulfate solution without moving, which may cause bubbles to appear in some sand and gravel piles, affecting the final test results. In order to solve this technical problem, a vibration device for vibrating the test frame is provided in the prior art, and the output end of the vibration device and the test frame are welded to the upper surfaces on both sides of the test frame. During the soaking process of the sand and gravel, the vibration device is started to drive the test frame to vibrate, thereby making the sand and gravel vibrate and preventing bubbles from appearing in the sand and gravel pile. However, since the test frame needs to be in frequent contact with the sodium sulfate solution, after the test frame is used for a long time, the mounting hole inside the test frame is worn and enlarged, which will cause the filter housing placed in the mounting hole to be unable to be driven by the test frame, resulting in the sand and gravel inside being unable to be vibrated. At this time, the test frame needs to be replaced, but the connection between the test frame and the vibration device makes it quite troublesome for the staff to replace the test frame. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of this application is to provide a fully automatic immersion and baking cycle equipment for sand and gravel firmness testing, which is used to solve the technical problem in the prior art that it is very troublesome to replace the test frame in the main body of the test device due to the connection between the test frame and the vibration device.

[0005] The above-mentioned purpose of the present application is achieved through the following technical solutions: a fully automatic immersion and baking cycle equipment for sand and gravel firmness test, comprising a test device main body, a through opening penetrating into the interior of the test device main body, a mounting opening provided on the bottom surface of the interior of the test device main body, and a test frame installed in the mounting opening, the interior of the test frame is evenly provided with leakage holes and mounting holes, a filter shell for placing sand and gravel is installed in the mounting hole, a heating device for heating the test device main body is provided in the test device main body, a cabinet door hingedly connected to the test device main body is provided on one side of the through opening, a vibration device for vibrating the test frame is provided at the upper end of the test device main body, a connecting structure for facilitating the test frame to detach from the vibration device is provided between the vibration device and the test frame, the vibration device is connected to the test frame via the connecting structure, and a sealing structure is provided at the lower end of the through opening of the test device main body to facilitate the test frame to detach from the test device main body.

[0006] Furthermore, the connection structure includes a connecting strip fixedly connected to the output end of the vibration device and a fixing strip fixedly connected to the upper surface of the test frame, a T-shaped slot extending along the length direction of the connecting strip is provided at one end of the connecting strip opposite to the through opening, the T-shaped slot passes through the bottom surface of the connecting strip, a T-shaped strip corresponding to the T-shaped slot is fixedly provided on the upper surface of the fixing strip, and the T-shaped strip is inserted into the T-shaped slot.

[0007] Furthermore, the blocking structure includes a blocking port that passes through the test device body and is connected to the installation port, plug-in slots provided on both sides and the bottom of the blocking port, and a blocking plate that is plugged into the test device body through the plug-in slots and blocks the blocking port.

[0008] By adopting the above technical solution, when the test frame needs to be replaced, the blocking plate is pulled upward to disengage the blocking port, and then the test frame is pulled outward of the test device body so that the T-shaped bar is disengaged from the T-shaped slot, so that the test frame can be directly disassembled, and then the new test frame is picked up so that the T-shaped bar is aligned with the T-shaped slot, and then the new test frame is pushed to insert into the installation port so that the T-shaped bar is inserted into the T-shaped slot, and then the blocking plate is aligned with the plug-in slot and inserted so that the two sides and the bottom end of the blocking plate are embedded in the plug-in slot to form a concave-convex fit to prevent the sodium sulfate solution from flowing out of the gap between the blocking plate and the plug-in slot, so that the replacement of the test frame is completed, so that the test frame can be easily replaced and can be vibrated by the vibration device, making the replacement of the test frame more convenient.

[0009] Furthermore, extruded rubber is fixedly provided on both sides of the plug-in slot.

[0010] By adopting the above technical solution, the extruded rubber is used to increase the friction of the sealing plate, so that the sealing plate can be stably installed in the plug-in slot, and further fills the gap between the sealing plate and the plug-in slot, thereby improving the sealing effect of the sealing plate.

[0011] Furthermore, the test frame includes a frame body and a mounting plate plugged into the bottom end of the frame body, the leakage hole and the mounting hole are provided on the mounting plate, the upper and lower end surfaces of the test frame are penetrated, and a plug interface is provided at the bottom end of one side of the test frame close to the through opening, and the mounting plate is plugged into the frame body through the plug interface.

[0012] By adopting the above technical solution, although the setting of the blocking structure and the connecting structure makes it easy to replace the test frame, the position of the test frame with the mounting hole is the most seriously damaged by the corrosion of the sodium sulfate solution. The damage of other parts of the test frame after corrosion will not cause the test frame to be unusable, which leads to a high cost of directly replacing the entire test frame. The present application solves this technical problem by setting the test frame as a frame body and a mounting plate. When only the mounting plate in the test frame is severely damaged and makes the test frame unusable, it is only necessary to pull the blocking plate upwards to separate the blocking plate from the blocking port, and then pull the mounting plate toward the outside of the test device body to separate the mounting plate from the frame body, and then replace the new mounting plate, which saves costs and increases the service life of the test frame.

[0013] Furthermore, a gripping plate is provided on the upper surface of the blocking plate, a through hole penetrating the gripping plate is opened in the middle of the gripping plate, and a storage structure for storing the gripping plate is provided on the upper surface of the blocking plate.

[0014] Furthermore, the storage structure includes a storage groove opened on the upper surface of the blocking plate and a support spring arranged in the storage groove for pushing the grip plate to extend out of the storage groove. One end of the support spring is fixedly connected to the bottom surface of the storage groove, and the other end is fixedly connected to the bottom surface of the grip plate.

[0015] By adopting the above technical solution, although the setting of the blocking structure makes it easy to replace the test frame, when the staff pulls out the blocking plate, the blocking plate blocks the sodium sulfate solution for a long time, making the side that contacts the sodium sulfate solution very smooth, causing the staff to slip when pulling out the blocking plate. Although this problem can be solved by providing a handle on the upper surface of the blocking plate, the setting of the handle will cause the cabinet door to be unable to close. The setting of the storage structure solves this technical problem. When the cabinet door is in a closed state, the bottom end of the cabinet door presses the grip plate to retract into the storage groove. When the cabinet door is in an open state, the support spring pushes the grip plate out of the storage groove. The staff can hold the grip plate through the through-hole of the grip plate, thereby making it easy for the staff to pull out the blocking plate.

[0016] Furthermore, the storage structure and the gripping plate completely cover the upper surface of the blocking plate.

[0017] By adopting the above technical solution, the storage structure and the grip plate on the upper surface of the blocking plate can make the bottom end of the cabinet door press the grip plate and retract into the storage groove. The support spring will also push the grip plate close to the bottom surface of the cabinet door, filling the gap between the blocking plate and the cabinet door, preventing heat loss when the inside of the main body of the test device is heated.

[0018] Furthermore, the grip plate is made of high temperature resistant rubber.

[0019] By adopting the above technical solution, the rubber has elasticity, the high temperature resistant rubber can prevent the grip plate from being damaged after contacting hot air, the elastic rubber can reduce the rigid contact between the grip plate and the cabinet door, reduce the wear of the cabinet door and the grip plate, and improve the service life of the grip plate and the cabinet door.

[0020] Furthermore, a plurality of support springs are provided along the length direction of the receiving groove.

[0021] By adopting the above technical solution, sufficient supporting force is provided to the grip board.

[0022] In summary, the present application includes at least one of the following beneficial technical effects: The T-shaped bar is then pulled out of the T-slot, and the new test frame is then pushed and inserted into the installation opening, so that the T-shaped bar is inserted into the T-slot, and the blocking plate is aligned with the plug-in slot and inserted into the plug-in slot, so that both sides and the bottom end of the blocking plate are embedded in the plug-in slot to form a concave-convex fit to prevent the sodium sulfate solution from flowing out of the gap between the blocking plate and the plug-in slot, so that the test frame is replaced, and the test frame can be easily replaced and vibrated by the vibration device, so that the replacement of the test frame is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the embodiment; Figure 2 is along Figure 1 Sectional view along line AA; Figure 3 yes Figure 2 Enlarged view of part A in the middle; Figure 4 It is another view of the overall structure of the embodiment; Figure 5 is along Figure 1 Sectional view along line BB.

[0024] Figure numerals: 1. Test device body; 10. Test frame; 100. Frame body; 101. Mounting plate; 11. Cabinet door; 12. Vibration device; 2. Connection structure; 20. Connection bar; 21. Fixing bar; 22. T-slot; 23. T-slot; 3. Sealing structure; 30. Sealing port; 31. Plug slot; 32. Sealing plate; 33. Extruded rubber; 4. Grip plate; 40. Through port; 5. Storage structure; 50. Storage groove; 51. Support spring. DETAILED DESCRIPTION

[0025] The present application is further described in detail below in conjunction with the accompanying drawings.

[0026] Example, see Figure 1 , Figure 2 , Figure 3 as well as Figure 4 A fully automatic immersion and drying cycle equipment for sand and gravel solidity test includes a core component, a test device body 1, and a through hole is opened on the outside of the test device body 1. This through hole directly penetrates into the inside of the test device body 1, which is convenient for operation and observation. In the bottom area inside the test device body 1, an installation port is opened for installing a specially set test frame 10. The inside of this test frame 10 is not only evenly distributed with leakage holes to ensure that the liquid can be discharged smoothly during the test, but also has a mounting hole for fixing a filter housing, which is specially used to carry and isolate sand and gravel samples.

[0027] In order to simulate the firmness of sand and gravel under different temperature conditions, a heating device is integrated inside the test device body 1, which can accurately control the temperature of the test environment. On one side of the opening, a cabinet door 11 connected to the test device body 1 by a hinge provides a convenient access for operators.

[0028] Furthermore, in order to enhance the uniform heating and material exchange efficiency of the sand and gravel samples during the test, a set of vibration devices 12 is installed on the upper part of the main body 1 of the test device. This set of devices achieves a flexible and stable connection with the test frame 10 through an innovatively set connection structure 2. Specifically, the connection structure 2 consists of two parts: one is a connection bar 20 fixedly connected to the output end of the vibration device 12, and one end of the connection bar 20 is provided with a T-shaped groove 22 along its length, and this groove runs through the bottom of the connection bar 20; the other is a fixed bar 21 fixed to the top of the test frame 10, and a T-shaped bar 23 that perfectly matches the T-shaped groove 22 is fixed on the upper surface of the fixed bar 21. The T-shaped bar 23 can be easily inserted and fixed in the T-shaped groove 22, which not only ensures the effective transmission of vibration energy, but also facilitates the rapid disassembly and assembly of the test frame 10.

[0029] Considering the need to replace the test frame 10 after the test, the device is also designed with an efficient blocking structure 3. This blocking structure 3 includes a blocking port 30 connected to the installation port, plug-in slots 31 provided on both sides and the bottom of the blocking port 30, and a blocking plate 32 that can be tightly inserted into the test device body 1 through the plug-in slot 31. The blocking plate 32 is used to completely block the blocking port 30. When the test frame 10 needs to be replaced, the operator only needs to simply lift the blocking plate 32 to disengage it from the blocking port 30, and then pull the test frame 10 outward to slide the T-shaped bar 23 out of the T-shaped slot 22 to complete the disassembly of the old test frame 10. Subsequently, align the new test frame 10 with the installation port and push it in until the T-shaped bar 23 is successfully inserted into the T-shaped slot 22. Finally, the sealing plate 32 is aligned with the plug-in slot 31 and inserted again, and the concave-convex design on both sides and the bottom is used to form a tight fit with the plug-in slot 31, effectively preventing the sodium sulfate solution and other test media from leaking from the tiny gap between the sealing plate 32 and the plug-in slot 31, thereby successfully completing the replacement process of the test frame 10.

[0030] In summary, the device not only realizes the rapid replacement of the test frame 10, but also ensures its stable vibration under the action of the vibration device 12, which greatly improves the convenience and efficiency of the sand and gravel firmness test.

[0031] In this embodiment, extrusion rubber 33 is fixedly provided on both sides of the plug-in slot 31. The extrusion rubber 33 is used to increase the friction of the sealing plate 32, so that the sealing plate 32 can be stably installed in the plug-in slot 31, and further fill the gap between the sealing plate 32 and the plug-in slot 31, thereby improving the sealing effect of the sealing plate 32.

[0032] Although the setting of the blocking structure 3 and the connecting structure 2 greatly facilitates the replacement process of the test frame 10, in actual use, the staff found that the strong corrosiveness of the sodium sulfate solution caused the most significant damage to specific parts of the test frame 10, especially those where the mounting holes were opened. It is worth noting that even after other areas of the test frame 10 are corroded, the degree of damage is usually not enough to directly cause the entire test frame 10 to lose its function. Therefore, if the test frame 10 needs to be replaced as a whole due to local damage, it will undoubtedly greatly increase the test cost.

[0033] In order to solve this technical problem in a targeted manner, this embodiment innovatively optimizes the structure of the test frame 10. Specifically, this embodiment designs the test frame 10 as a detachable combined structure, including a frame body 100 and a mounting plate 101 that can be plugged into the bottom of the frame body 100. This setting makes the mounting plate 101 a key component that directly bears the corrosion of the sodium sulfate solution, and the leakage hole and the mounting hole are opened on the mounting plate 101 to facilitate the placement of the sand and gravel samples and the discharge of liquid during the test.

[0034] In addition, in order to ensure smooth communication between the inside of the test frame 10 and the external environment, the upper and lower end surfaces of the test frame 10 are designed to be in a through state, which is not only conducive to the exchange of substances during the test, but also convenient for the disassembly and assembly of the mounting plate 101. In addition, a plug-in interface is provided on the bottom surface of one side of the test frame 10 close to the through opening in this embodiment, and this design enables the mounting plate 101 to be plugged into the frame body 100 through the plug-in interface.

[0035] When the mounting plate 101 in the test frame 10 is seriously worn out and affects the overall use, the operator only needs to replace it according to the established steps: first, lift the blocking plate 32 upward to easily disengage it from the blocking port 30; then, pull the mounting plate 101 outward to make it slide smoothly out of the plug interface of the frame body 100; finally, align a new mounting plate 101 with the plug interface and gently push it in until it is firmly connected to the frame body 100. This replacement process is not only simple and easy, but also greatly saves costs and significantly extends the overall service life of the test frame 10. Through such design optimization, this embodiment successfully achieves the maximum reduction of test costs while ensuring test efficiency and accuracy.

[0036] Although the setting of the blocking structure 3 greatly facilitates the replacement process of the test frame 10, in the actual operation, the staff encountered new problems when trying to pull out the blocking plate 32. Because the blocking plate 32 blocks the sodium sulfate solution for a long time, its surface contacting the sodium sulfate solution gradually becomes abnormally smooth. This change causes the staff to slip easily when pulling out the blocking plate 32, thereby increasing the difficulty and danger of the operation.

[0037] To address this problem, an intuitive solution is to add a handle to the upper surface of the blocking plate 32 so that the staff can more firmly grasp and pull out the blocking plate 32. However, this design brings another problem: the addition of a handle will interfere with the normal closing of the cabinet door 11, thereby affecting the sealing and safety of the entire test device.

[0038] In order to take into account both the convenience of operation and the overall performance of the test device, the present embodiment further optimizes the design of the blocking plate 32. Figure 5 In this embodiment, a grip plate 4 is provided on the upper surface of the blocking plate 32. A through hole 40 is provided in the middle of the grip plate 4, which not only maintains the overall structural integrity of the blocking plate 32 but also provides a reliable gripping point for the staff.

[0039] In order to realize convenient use of the grip plate 4 without interfering with the closing of the cabinet door 11, the present embodiment also provides a storage structure 5. The storage structure 5 includes a storage groove 50 provided on the upper surface of the blocking plate 32, and a support spring 51 provided inside the storage groove 50. One end of the support spring 51 is firmly fixed on the bottom surface of the storage groove 50, and the other end is fixedly connected to the bottom surface of the grip plate 4.

[0040] When the cabinet door 11 is in a closed state, the bottom end of the cabinet door 11 will naturally press on the grip plate 4, so that the grip plate 4 is retracted into the receiving groove 50 under the action of the support spring 51, thereby ensuring the smooth closing of the cabinet door 11. When the cabinet door 11 is opened, the support spring 51 will exert its elastic force to push the grip plate 4 out of the receiving groove 50, so that the staff can easily hold the grip plate 4 through the through hole 40 of the grip plate 4, and then easily pull out the blocking plate 32.

[0041] Through such design optimization, this embodiment not only solves the problem of the blocking plate 32 slipping when being pulled out, but also ensures the normal closing of the cabinet door 11 and the overall performance of the test device, thereby improving the convenience and safety of the sand and gravel solidity test operation.

[0042] In this embodiment, the storage structure 5 and the grip plate 4 are fully covered on the upper surface of the sealing plate 32. The storage structure 5 and the grip plate 4 that are fully covered on the upper surface of the sealing plate 32 can make the bottom end of the cabinet door 11 press the grip plate 4 to retract into the storage groove 50. The support spring 51 will also push the grip plate 4 to fit closely to the bottom surface of the cabinet door 11, filling the gap between the sealing plate 32 and the cabinet door 11, thereby preventing heat loss when the inside of the test device body 1 is heated.

[0043] In this embodiment, the grip plate 4 is made of high-temperature resistant rubber, and multiple support springs 51 are provided along the length direction of the storage groove 50. The rubber is elastic, and the high-temperature resistant rubber can prevent the grip plate 4 from being damaged after contacting hot air. The elastic rubber can reduce the rigid contact between the grip plate 4 and the cabinet door 11, reduce the wear of the cabinet door 11 and the grip plate 4, and improve the service life of the grip plate 4 and the cabinet door 11. Multiple support springs 51 are used to provide sufficient supporting force for the grip plate 4.

[0044] Specific implementation process: when only the mounting plate 101 in the test frame 10 is seriously damaged and makes the test frame 10 unusable, it is only necessary to pull the blocking plate 32 upward to make the blocking plate 32 separate from the blocking port 30, and then pull the mounting plate 101 outward from the test device body 1 to make the mounting plate 101 separate from the frame body 100, and then replace it with a new mounting plate 101.

[0045] When the mounting plate 101 and the frame body 100 in the test frame 10 are seriously worn out and the test frame 10 cannot be used, the blocking plate 32 is pulled upward to separate the blocking plate 32 from the blocking port 30, and then the test frame 10 is pulled outward from the test device body 1 so that the T-shaped bar 23 separates from the T-shaped slot 22, so that the test frame 10 can be directly disassembled, and then a new test frame 10 is picked up so that the T-shaped bar 23 is aligned with the T-shaped slot 22, and then the new test frame 10 is pushed and inserted into the mounting port so that the T-shaped bar 23 is inserted into the T-shaped slot, and then the blocking plate 32 is aligned with the plug-in slot 31 and inserted, so that the two sides and the bottom end of the blocking plate 32 are embedded in the plug-in slot 31, forming a concave-convex fit to prevent the sodium sulfate solution from flowing out from the gap between the blocking plate 32 and the plug-in slot 31, and thus the replacement of the test frame 10 is completed.

[0046] The embodiments of this specific implementation method are all preferred embodiments of the present application, and are not intended to limit the protection scope of the application. Therefore, all equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A fully automatic immersion and drying cycle device for testing the firmness of sand and gravel, comprising a test device body (1), a through hole penetrating the inside of the test device body (1), a mounting hole provided on the bottom surface of the inside of the test device body (1), and a test frame (10) installed in the mounting hole, wherein the inside of the test frame (10) is evenly provided with leakage holes and mounting holes, a filter housing for placing sand and gravel is installed in the mounting hole, a heating device for heating the test device body (1) is provided in the test device body (1), a cabinet door (11) hingedly connected to the test device body (1) is provided on one side of the through hole, a vibration device (12) for vibrating the test frame (10) is provided at the upper end of the inside of the test device body (1), and the test device body (1) is characterized in that: A connection structure (2) is provided between the vibration device (12) and the test frame (10) for facilitating the test frame (10) to be separated from the vibration device (12); the vibration device (12) is connected to the test frame (10) via the connection structure (2); and a blocking structure (3) is provided at the lower end of the through opening of the test device body (1) for facilitating the test frame (10) to be separated from the test device body (1).

2. According to claim 1, a fully automatic immersion and drying cycle equipment for sand and gravel firmness test is characterized in that: The connection structure (2) comprises a connection bar (20) fixedly connected to the output end of the vibration device (12) and a fixing bar (21) fixedly connected to the upper surface of the test frame (10); one end of the connection bar (20) opposite to the through opening is provided with a T-shaped groove (22) extending along the length direction of the connection bar (20); the T-shaped groove (22) passes through the bottom surface of the connection bar (20); a T-shaped bar (23) corresponding to the T-shaped groove (22) is fixedly provided on the upper surface of the fixing bar (21); the T-shaped bar (23) is inserted into the T-shaped groove (22).

3. According to claim 1, a fully automatic immersion and drying cycle equipment for sand and gravel firmness test is characterized in that: The blocking structure (3) comprises a blocking port (30) that passes through the test device body (1) and is connected to the installation port, plugging slots (31) provided on both sides and the bottom surface of the blocking port (30), and a blocking plate (32) that is plugged into the test device body (1) through the plugging slots (31) and blocks the blocking port (30).

4. According to claim 3, a fully automatic immersion and drying cycle equipment for sand and gravel firmness test is characterized in that: Extrusion rubber (33) is fixedly provided on both sides of the plug-in slot (31).

5. According to claim 1, a fully automatic immersion and drying cycle equipment for sand and gravel firmness test is characterized in that: The test frame (10) comprises a frame body (100) and a mounting plate (101) plugged into the bottom end of the frame body (100); the water leakage hole and the mounting hole are provided on the mounting plate (101); both upper and lower end surfaces of the test frame (10) are penetrated; a plug-in interface is provided at the bottom end of one side of the test frame (10) close to the through opening; the mounting plate (101) is plugged into the frame body (100) via the plug-in interface.

6. According to claim 3, a fully automatic immersion and drying cycle equipment for sand and gravel firmness test is characterized in that: A gripping plate (4) is provided on the upper surface of the blocking plate (32), a through hole (40) penetrating the gripping plate (4) is provided in the middle of the gripping plate (4), and a storage structure (5) for storing the gripping plate (4) is provided on the upper surface of the blocking plate (32).

7. The fully automatic immersion and drying cycle equipment for sand and gravel firmness test according to claim 6 is characterized in that: The storage structure (5) comprises a storage groove (50) provided on the upper surface of the blocking plate (32) and a support spring (51) arranged in the storage groove (50) for pushing the gripping plate (4) to extend out of the storage groove (50); one end of the support spring (51) is fixedly connected to the bottom surface of the storage groove (50), and the other end is fixedly connected to the bottom surface of the gripping plate (4).

8. The fully automatic immersion and drying cycle equipment for sand and gravel firmness test according to claim 6 is characterized in that: The storage structure (5) and the gripping plate (4) are fully distributed on the upper surface of the sealing plate (32).

9. The fully automatic immersion and drying cycle equipment for sand and gravel firmness test according to claim 6, characterized in that: The grip plate (4) is made of high temperature resistant rubber.

10. The fully automatic immersion and drying cycle equipment for sand and gravel firmness test according to claim 7, characterized in that: A plurality of the support springs (51) are provided along the length direction of the receiving groove (50).

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