An experimental device and experimental method for rubber sand alluvial soft soil roadbed

Abstract

The invention provides an experimental device and an experimental method for a rubber sand alluvial soft soil roadbed, which are used to solve the problem of low utilization efficiency of the experimental device for the rubber sand alluvial soft soil roadbed in the prior art. The experimental device comprises a detection platform, a shear box module, a transfer module, a material pushing module and a detection module; the shear box module, the transfer module, the material pushing module and the detection module are arranged on the detection platform; the transfer module is used to automatically transfer the rubber sand to be detected and the rubber sand after monitoring, and the material pushing module is used to automatically put the rubber sand to be detected into a containing cavity and push the rubber sand after detection out of the containing cavity; that is, the steps of loading, detecting and pushing are all automatically completed, and there is no need for an experimenter to perform manual operation, so the workload of the experimenter is reduced and the shear strength detection efficiency of the rubber sand is improved.

Description

Technical Field

[0001] The invention belongs to the field of rubber sand alluvial soft soil roadbed experiments, and in particular relates to an experimental device and an experimental method for a rubber sand alluvial soft soil roadbed. Background Art

[0002] Soft soil roadbed is a common roadbed form in my country's highway engineering construction. The high compressibility and instability of soft soil roadbed make the bearing capacity of soft soil roadbed low and prone to roadbed settlement. In addition, with the rapid development of modern automobile manufacturing technology, vehicle loads are constantly increasing, which also places increasing demands on the bearing capacity of the roadbed. Common soft foundation treatment technologies include drainage preloading, deep treatment of powder mixing piles, lightweight roadbed, cushion and shallow treatment, self-weight preloading, overload preloading, chemical methods, and geotextile reinforcement methods. However, in the actual construction process, such reinforcement methods have a long construction period and are not suitable for projects with tight construction periods.

[0003] In addition, with the continuous increase in the number of cars in my country, the problem of how to properly dispose of discarded rubber tires is becoming increasingly severe. Making rubber into roadbed filler is an effective way to solve this problem. When rubber is made into roadbed filler, the rubber is usually made into rubber particles, which are then mixed with sand to make rubber sand. However, the content of rubber particles, the size of rubber particles, and the overall gradation of rubber and sand have different effects on the shear strength of soft soil roadbed during actual construction. Therefore, when making rubber sand, it is necessary to use an experimental device to simulate the effect of rubber sand on the shear strength of soft soil roadbed during actual use.

[0004] In the prior art, in order to conduct a shear strength test on the roadbed filler, a direct shear test device is usually used. When using the device, the experimenter needs to open the upper shear box and the lower shear box, and then insert the pin to position the upper shear box and the lower shear box. After positioning, the rubber sand used for the experiment is placed in the upper shear box and the lower shear box; after placing, the pin is taken out, and then a certain force is applied to the lower shear box to conduct the shear test. It can be seen that manual operation is required during the experiment, which takes too long and is time-consuming and laborious.

[0005] In addition, the Chinese patent with announcement number: CN118424850B proposes a frozen soil mechanical parameter determination device. The patent sets an automatic loading unit, an automatic propulsion unit and an automatic detection unit on the detection platform. After the frozen soil to be detected is transferred to the corresponding position of the fixed upper box by the automatic loading unit, the frozen soil to be detected is pushed into the fixed upper box and the fixed lower box by the automatic propulsion unit, and then the detection is performed by the automatic detection unit. Although this method can realize the automatic loading of frozen soil, after the detection is completed, the removal of frozen soil is still done manually, and automatic operation cannot be realized. Summary of the invention

[0006] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide an experimental device and an experimental method for a rubber sand alluvial soft soil roadbed, so as to solve the problem of low utilization efficiency of the experimental device for the rubber sand alluvial soft soil roadbed in the prior art.

[0007] To achieve the above-mentioned purpose and other related purposes, the present invention provides an experimental device for rubber sand alluvial soft soil roadbed, which comprises: a detection platform, a shear box module, a transfer module, a pushing module and a detection module; the shear box module, the transfer module, the pushing module and the detection module are arranged on the detection platform; the shear box module comprises an upper shear box, a lower shear box and a guide assembly; the upper shear box is arranged at the upper end of the lower shear box, and the lower end of the lower shear box is slidably connected with the guide assembly in a direction perpendicular to the detection platform; the guide assembly is slidably connected with the detection platform in a direction parallel to the detection platform; the upper shear box and the lower shear box are provided with a first through hole and a accommodating cavity for accommodating rubber sand; a first pushing member is provided in the accommodating cavity, and one end of the first pushing member extends out of the accommodating cavity and abuts against the guide assembly; the pushing module comprises an upper pushing assembly, a lower pushing assembly and a first driving assembly; one end of the first driving assembly is connected to the upper pushing assembly, and the other end is connected to the lower pushing assembly, and the first driving assembly is used to drive the upper pushing assembly and the lower pushing assembly to move up and down in a direction perpendicular to the detection platform; the upper The pushing assembly includes a first mounting member connected to the first driving assembly, and the first mounting member is slidably provided with a positioning column for cooperating with the first through hole and a second pushing member for driving the shearing upper box and the shearing lower box to move downward, and a third pushing member for driving the rubber sand to be tested to move downward into the accommodating chamber; the length of the positioning column is greater than the length of the second pushing member and the third pushing member; the length of the second pushing member is less than or equal to the length of the third pushing member; when the first driving assembly drives the upper pushing assembly and the lower pushing assembly to move downward, the guide assembly is also used to abut against the positioning column to drive the positioning column to exit the first through hole set in the shearing lower box; a fourth pushing member is provided on the lower pushing assembly, and when the first driving assembly drives the upper pushing assembly and the lower pushing assembly to move upward, the first pushing member is connected to the fourth pushing member to drive the rubber sand that has been tested to move upward outside the accommodating chamber; the transfer module is used to transfer the rubber sand to be tested and the rubber sand that has been tested; the detection module is used to drive the shearing lower box and the guide assembly to move in a direction parallel to the detection platform to detect the shear strength of the rubber sand.

[0008] Optionally, the upper pushing assembly also includes a first elastic member; a second through hole is also provided on the first mounting member, and a first limiting portion is provided at one end of the positioning column; the positioning column is passed through the second through hole, and the first elastic member is sleeved on the positioning column, one end of which is connected to the positioning column, and the other end is connected to a side of the first mounting member away from the first limiting portion.

[0009] Optionally, the first driving assembly includes a first mounting plate, a first driving member, a first guide member and a first screw rod; the first mounting plate is arranged on the detection platform; the first guide member is arranged on the first mounting plate; the upper pushing assembly and the lower pushing assembly are slidably connected to the first guide member; the first driving member is arranged on the detection platform, and the first screw rod is connected to the first driving member, one end of which is connected to the upper pushing assembly, and the other end is connected to the lower pushing assembly; the first driving member is used to drive the first screw rod to rotate, and then drive the upper pushing assembly and the lower pushing assembly to slide along the first guide member; and / or, a third through hole is arranged on the detection platform, and the fourth pushing member passes through the third through hole and is connected to the first pushing member.

[0010] Optionally, the guide assembly includes a second mounting plate, a plurality of guide columns and a plurality of second elastic members, wherein the side of the second mounting plate close to the detection platform is slidably connected to the detection module; one end of the plurality of guide columns is connected to the side of the second mounting plate away from the detection platform, and the other end extends into a first through hole provided on the shear box; the second elastic member is sleeved on the guide column, one end of which is connected to the second mounting plate, and the other end of which is connected to the shear box; the second elastic member and the guide column are provided in a one-to-one correspondence.

[0011] Optionally, a fourth through hole is provided on the second mounting plate, and the fourth pushing member passes through the fourth through hole to be connected with the first pushing member; the diameter of the fourth through hole is smaller than the diameter of the first pushing member, and is greater than or equal to the diameter of the third pushing member.

[0012] Optionally, a connecting component is provided at the connecting end of the first pushing member and the fourth pushing member; the connecting component is a cross groove provided on the first pushing member and a cross protrusion provided on the fourth pushing member; or, the connecting component is a cross protrusion provided on the first pushing member and a cross groove provided on the fourth pushing member.

[0013] Optionally, the transfer module includes a second drive component, a third mounting component, a third drive component and two relatively arranged first clamping components for clamping rubber sand; the second drive component is arranged on the detection platform, and the third mounting component is connected to the second drive component; the third drive component is arranged on the third mounting component, and the third drive component is used to drive the two first clamping components to move in opposite directions; the second drive component is used to drive the third mounting component to move in a direction close to or away from the shear box.

[0014] The second transmission gear of the second end is connected with the third transmission gear of the second end support, and the transmission gear of the second end is connected with the third transmission gear of the second end support. The third driving member is used to drive the third screw rod to rotate, and then drive the two first clamping members to move in opposite directions along the third guide member; and / or the transfer module also includes a second clamping member, a fourth guide member, a first limit block, a second limit block and a third elastic member; the second clamping member is used to be connected to the bottom of the rubber sand; the fourth guide member and the first limit block are arranged on the other side of the third mounting member opposite to the side where the third driving assembly is arranged; the second clamping member is arranged on the fourth guide, and the second limit block is arranged on the second clamping member; one end of the third elastic member is connected to the first limit block, and the other end is connected to the second limit block; the second limit block is used to abut against the first fixing member arranged on the detection platform to limit the maximum movement distance of the second clamping member approaching the shearing box.

[0015] Optionally, the detection module includes a propulsion assembly and a detection assembly; the propulsion assembly includes a fourth driving member and a fifth guide member; the fourth driving member and the fifth guide member are arranged on the detection platform; the fourth driving member is used to drive the shear box and the guide assembly to slide along the fifth guide member; the detection assembly includes a detection member and an abutment member, one end of the abutment member is connected to the shear box, and the other end is connected to the detection member, and the detection member is used to detect the movement displacement of the shear box and / or detect the load size applied to the shear box by the fourth driving member.

[0016] On the other hand, the present invention also provides an experimental method for rubber sand alluvial soft soil roadbed, including an experimental device for rubber sand alluvial soft soil roadbed as described above, and also including: a loading step: using a transfer module to transfer the rubber sand to be tested to the top of the accommodating cavity of the shear upper box, and then using a pushing module to push the rubber sand to be tested into the accommodating cavity of the shear upper box and the shear lower box; a detection step: the propulsion component pushes the shear lower box and the guide component to move, and then using the detection component to detect the movement displacement of the shear lower box and / or detect the load size applied to the shear lower box by the fourth driving member; a material taking step: using the pushing module to push the rubber sand after the detection out of the accommodating cavity of the shear upper box and the shear lower box, and then using the transfer module to transfer the rubber sand after the detection to a position away from the shear upper box.

[0017] As described above, the experimental device and experimental method of a rubber sand alluvial soft soil roadbed of the present invention have at least the following beneficial effects: the present invention automatically transfers the rubber sand to be detected to the top of the shear upper box in the transfer module, and then uses the first driving component to drive the upper push assembly and the lower push assembly to move downward, so that the positioning column of the upper push assembly is inserted into the first through hole of the shear upper box and the shear lower box to realize the positioning of the shear upper box and the shear lower box; and after the positioning column locates the shear upper box and the shear lower box, the third pusher is used to push the rubber sand to be detected into the accommodating cavity of the shear upper box and the shear lower box, and finally the second pusher is used to drive the shear upper box and the shear lower box to move as a whole, so that the positioning column exits the first through hole of the shear lower box to complete the loading operation. After the detection is completed, the first driving component is used to drive the upper push assembly and the lower push assembly to move upward, so that the fourth pusher is connected to the first pusher, and drives the fourth pusher to move upward, thereby driving the rubber sand after the detection to exit the accommodating cavity, so as to facilitate the transfer of the transfer module. That is, the loading, testing, and pushing steps of the experimental device of this scheme are all completed automatically, without the need for manual operation by the experimenter, thereby reducing the workload of the experimenter and improving the shear strength testing efficiency of the rubber sand. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Shown is a structural schematic diagram of an experimental device for a rubber sand alluvial soft soil roadbed according to the present invention.

[0019] Figure 2 It is a schematic structural diagram showing an experimental device for a rubber sand alluvial soft soil roadbed according to the present invention, omitting the pushing module.

[0020] Figure 3 Shown is a schematic structural diagram of a pusher module of an experimental device for a rubber sand alluvial soft soil roadbed according to the present invention.

[0021] Figure 4 Shown is a structural schematic diagram of a detection module and a shear box module of an experimental device for a rubber sand alluvial soft soil roadbed of the present invention.

[0022] Figure 5 It is a schematic structural diagram of a first pushing member and a fourth pushing member of an experimental device for a rubber sand alluvial soft soil roadbed according to the present invention.

[0023] Figure 6 Shown is a structural schematic diagram of a transfer module of an experimental device for a rubber sand alluvial soft soil roadbed according to the present invention.

[0024] Figure 7 It is a schematic diagram showing the structure of the first clamping member of the present invention with the closing member omitted from an angle.

[0025] Figure 8 It is a schematic structural diagram of the first clamping member of the present invention from another angle.

[0026] Fig. 9 Shown is a schematic flow chart of an experimental method for a rubber sand alluvial soft soil roadbed of the present invention. DETAILED DESCRIPTION

[0027] The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0028] Please refer to all the following drawings. It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0029] The following embodiments are only for illustration purposes and can be combined with each other, and are not limited to the contents presented in the following single embodiments.

[0030] See also Figure 1-3The present invention provides an experimental device for rubber sand alluvial soft soil roadbed, which comprises: a detection platform 1, a shear box module 2, a transfer module 3, a pusher module 4 and a detection module 5; the shear box module 2, the transfer module 3, the pusher module 4 and the detection module 5 are arranged on the detection platform 1; the shear box module 2 comprises a shear upper box 21, a shear lower box 22 and a guide component 23; the shear upper box 21 is arranged at the upper end of the shear lower box 22, and the lower end of the shear lower box 22 is slidably connected to the guide component 23 in a direction perpendicular to the detection platform 1; the guide component 23 is slidably connected to the detection platform 1 in a direction parallel to the detection platform 1 ... 1 and the shear lower box 22 are provided with a first through hole 24 and a receiving chamber 25 for receiving rubber sand; a first pushing member 26 is provided in the receiving chamber 25, one end of the first pushing member 26 extends out of the receiving chamber 25 and abuts against the guide assembly 23; the pushing module 4 includes an upper pushing assembly 41, a lower pushing assembly 42 and a first driving assembly 43; one end of the first driving assembly 43 is connected to the upper pushing assembly 41, and the other end is connected to the lower pushing assembly 42, and the first driving assembly 43 is used to drive the upper pushing assembly 41 and the lower pushing assembly 42 to move up and down in a direction perpendicular to the detection platform 1; the upper pushing assembly 41 includes the first driving assembly connected to the upper pushing assembly 41 and the lower pushing assembly 42. The first mounting member 411 connected to 43 is slidably provided with a positioning column 412 for cooperating with the first through hole 24 and a second pushing member 413 for driving the shearing upper box 21 and the shearing lower box 22 to move downward, and a third pushing member 414 for driving the rubber sand to be tested to move downward into the accommodating chamber 25; the length of the positioning column 412 is greater than the length of the second pushing member 413 and the third pushing member 414; the length of the second pushing member 413 is less than or equal to the length of the third pushing member 414; when the first driving assembly 43 drives the upper pushing assembly 41 and the lower pushing assembly 42 to move downward, the guide assembly 23 is also used to cooperate with The positioning column 412 abuts to drive the positioning column 412 to withdraw from the first through hole 24 set in the shear box 22; a fourth pushing member 421 is set on the lower pushing assembly 42, and when the first driving assembly 43 drives the upper pushing assembly 41 and the lower pushing assembly 42 to move upward, the first pushing member 26 is connected to the fourth pushing member 421, which is used to drive the rubber sand that has been tested to move upward to the outside of the accommodating chamber 25; the transfer module 3 is used to transfer the rubber sand to be tested and the rubber sand that has been tested; the detection module 5 is used to drive the shear box 22 and the guide assembly 23 to move in a direction parallel to the detection platform 1 to detect the shear strength of the rubber sand.

[0031] Specifically, the first mounting member 411 may be a plate-like structure. The accommodating chamber 25 is a through hole for accommodating rubber sand, which is arranged at the center of the shear upper box 21 and the shear lower box 22. The accommodating chamber 25 may be a cylindrical through hole, and the corresponding first pusher 26, the second pusher 413, the third pusher 414, and the fourth pusher 421 may be cylindrical structures. The central axis of the third pusher 414 and the fourth pusher 421 coincides with the central axis of the accommodating chamber 25, so that the third pusher 414 can push the rubber sand to be detected into the accommodating chamber 25, and the fourth pusher 421 can be connected to the first pusher 26 arranged in the accommodating chamber 25, so as to drive the first pusher 26 to move. The diameter of the first pusher 26 is equal to the diameter of the accommodating chamber 25, one end of the first pusher 26 is connected to the bottom of the rubber sand, and the other end is connected to the fourth pusher 421, that is, the first pusher 26 is used as the bottom of the accommodating chamber 25 of the shear lower box 22, ensuring that the rubber sand can be accommodated in the accommodating chamber 25. It is understandable that due to the material characteristics of the rubber sand, the inside of the rubber sand will be in a loose state during the experiment. After the rubber sand is pushed into the accommodating chamber 25 by the third pushing member 414, that is, after the first pushing member 26 and the third pushing member 414 fix the two ends of the rubber sand, the first driving assembly 43 is used to change the downward force of the third pushing member 414, which can also play a role in changing the loose rubber sand into a compacted state, thereby simulating the actual application scenario of rubber sand in impacting soft soil roadbed.

[0032] The central axis of the positioning column 412 coincides with the central axis of the first through hole 24, and the diameter of the positioning column 412 may be less than or equal to the diameter of the first through hole 24, so as to ensure that the positioning column 412 can extend into the first through hole 24. The length of the positioning column 412 is greater than the length of the second pusher 413 and the third pusher 414. Therefore, when the first driving assembly 43 drives the upper pusher assembly 41 and the lower pusher assembly 42 to move downward, it can be ensured that the positioning column 412 is first inserted into the first through hole 24 of the shear upper box 21, and then the third pusher 414 can drive the rubber sand to be detected into the accommodating chamber 25, so as to ensure that the relative position of the shear upper box 21 is fixed before the rubber sand enters the accommodating chamber 25, so as to avoid relative displacement of the shear upper box 21 and the shear lower box 22 when the rubber sand enters the accommodating chamber 25. More specifically, the length of the positioning column 412 is greater than the height of the rubber sand to be detected plus the height of the shear upper box 21 plus the length of the third pusher 414. Therefore, when the rubber sand enters the accommodating chamber 25, the positioning column 412 has been inserted into the first through hole 24 of the shear upper box 21 and the shear lower box 22, so as to realize the positioning of the shear upper box 21 and the shear lower box 22, and further prevent the shear upper box 21 and the shear lower box 22 from relative displacement when the rubber sand enters the accommodating chamber 25. In addition, the length of the second pusher 413 is less than or equal to the length of the third pusher 414, so as to ensure that before the second pusher 413 drives the shear upper box 21 and the shear lower box 22 to move downward, the third pusher 414 has completely pushed the rubber sand to be detected into the accommodating chamber 25.

[0033] In the process of the second pusher 413 driving the upper shear box 21 and the lower shear box 22 to move downward, the guide assembly 23 keeps in contact with the positioning column 412, and because the positioning column 412 and the first mounting member 411 are slidably connected, and at this time the guide assembly 23 is fixed relative to the detection platform 1 in the direction perpendicular to the detection platform 1, so in the process of the second pusher 413 driving the upper shear box 21 and the lower shear box 22 to move downward, the relative position of the positioning column 412 relative to the upper shear box 21 and the lower shear box 22 changes, and then gradually exits the first through hole 24 of the lower shear box 22. It can be understood that, since the detection module 5 will drive the lower shear box 22 and the guide assembly 23 to move during detection, the limit position of the second pusher 413 driving the upper shear box 21 and the lower shear box 22 to move downward is the position where the guide column 232 just leaves the first through hole 24 of the lower shear box 22, so that the detection module 5 can drive the lower shear box 22 and the upper shear box 21 to move.

[0034] The upper pushing assembly 41 of the pushing module 4 can be arranged above the detection platform 1, and the lower pushing assembly 42 can be arranged below the detection platform 1, that is, they are respectively located on the upper and lower sides of the detection platform 1. At this time, when the first driving assembly 43 drives the upper and lower material assemblies to move downward, the fourth pusher 421 can be disengaged from the first pusher 26, that is, the two are not in contact, to ensure that when the detection module 5 drives the shearing lower box 22 and the guide assembly 23 to move in a direction parallel to the detection platform 1, the fourth pusher 421 will not interfere with the guide member and the shearing lower box 22. Of course, in other implementations, both the upper pushing assembly 41 and the lower pushing assembly 42 can be arranged above the detection platform 1, as long as the fourth pusher 421 of the lower pushing assembly 42 can be connected to the first pusher 26, and does not interfere with the detection module 5 driving the shearing lower box 22 and the guide assembly 23 to move in a direction parallel to the detection platform 1.

[0035] See also Figure 3 The upper pusher assembly 41 also includes a first elastic member 415, a second through hole 4111 is further provided on the first mounting member 411, and a first limiting portion 4121 is provided at one end of the positioning column 412; the positioning column 412 is provided on the second through hole 4111, and the first elastic member 415 is sleeved on the positioning column 412, one end of which is connected to the positioning column 412, and the other end is connected to a side of the first mounting member 411 away from the first limiting portion 4121. Specifically, the first limiting portion 4121 is a convex structure protruding from the positioning column 412, and the first limiting portion 4121 is used to limit the maximum displacement of the positioning column 412 moving downward relative to the first mounting member 411. When the positioning column 412 passes through the second through hole 4111 and is provided on the first mounting member 411, the first limiting portion 4121 is located at the upper end surface of the first mounting member 411, and the first elastic member 415 is located at the lower end surface of the first mounting member 411. The first elastic member 415 is used to drive the positioning column 412 to move downward and restore the positioning column 412 to its initial position when the positioning column 412 loses the abutment of the guide assembly 23. The first elastic member 415 can be a spring, or other elastic structures, which is not limited in this embodiment.

[0036] Please continue reading Figure 3 The push-down assembly 42 includes a second mounting member 422, and the fourth pushing member 421 is connected to the first driving assembly 43 through the second mounting member 422. Specifically, the second mounting member 422 can be a plate-like structure, which is connected to the first screw rod 434 of the first driving assembly 43, and the fourth pushing member 421 is arranged on the second mounting member 422.

[0037] The first driving assembly 43 includes a first mounting plate 431, a first driving member 432, a first guide member 433 and a first screw rod 434; the first mounting plate 431 is arranged on the detection platform 1; the first guide member 433 is arranged on the first mounting plate 431; the upper pushing assembly 41 and the lower pushing assembly 42 are slidably connected with the first guide member 433; the first driving member 432 is arranged on the detection platform 1, and the first screw rod 434 is connected to the first driving member 432, one end of which is connected to the upper pushing assembly 41, and the other end is connected to the lower pushing assembly 42; the first driving member 432 is used to drive the first screw rod 434 to rotate, thereby driving the upper pushing assembly 41 and the lower pushing assembly 42 to slide along the first guide member 433.

[0038] Specifically, the first mounting plate 431 is a plate-like structure, which is arranged perpendicular to the detection platform 1; the first guide member 433 can be a guide rail, which is used to guide the first mounting member 411 and the second mounting member 422. Preferably, there are two first guide members 433, and a first guide member 433 is respectively arranged on both sides of the first screw rod 434 to ensure the smooth movement of the first mounting member 411 and the second mounting member 422. The first mounting member 411 and the second mounting member 422 can be respectively provided with a screw nut, which is connected to the first screw rod 434 by the screw nut, so that the rotation of the first screw rod 434 is converted into the linear movement of the first mounting member 411 and the second mounting member 422. The first driving member 432 can be a motor, and of course it can also be other driving elements, which is not limited in this embodiment. It can be understood that in this embodiment, the first screw rod 434 has the same thread rotation direction as the connecting end of the upper push assembly and the lower push assembly.

[0039] In one implementation, there may be two first mounting plates 431, one on the upper side and one on the lower side of the detection platform 1, respectively. Two first guide members 433 are provided on the first mounting plate 431 located on the upper side of the detection platform 1, which are used to guide the first mounting member 411. The first mounting plate 431 located on the lower side of the detection platform 1 is also provided with two first guide members 433, which are used to guide the second mounting member 422. The first driving member 432 is provided on the detection platform 1, and the first screw rod 434 is provided on the first driving member 432, one end of which passes through the detection platform 1 and is connected to the second mounting member 422, and the other end is connected to the first mounting member 411. This arrangement enables the first mounting member 411 and the second mounting member 422 to be respectively provided on one side of the detection platform 1, so as to prevent the second mounting member 422 and the fourth pusher 421 provided on the second mounting member 422 from interfering with the guide assembly 23 and the shear lower box 22. A third through hole 11 may be provided on the detection platform 1, and the fourth pushing member 421 passes through the third through hole 11 and is connected to the first pushing member 26; the central axis of the third through hole 11 is aligned with the central axis of the accommodating cavity 25 of the shear upper box 21 and the shear lower box 22, that is, when the second mounting member 422 is provided on the lower side of the detection platform 1, the third through hole 11 is used to avoid the fourth pushing member 421, ensuring that the fourth pushing member 421 can be smoothly connected to the first pushing member 26.

[0040] See also Figure 1 , 2 4. The guide assembly 23 includes a second mounting plate 231, a plurality of guide posts 232 and a plurality of second elastic members 233. The second mounting plate 231 is slidably connected to the detection module 5 on one side close to the detection platform 1; one end of the plurality of guide posts 232 is connected to the side of the second mounting plate 231 away from the detection platform 1, and the other end extends into the first through hole 24 provided on the shear lower box 22; the second elastic member 233 is sleeved on the guide post 232, one end is connected to the second mounting plate 231, and the other end is connected to the shear lower box 22; the second elastic member 233 and the guide post 232 are provided in a one-to-one correspondence. Specifically, the guide posts 232 are provided in 4 numbers, the corresponding second elastic members 233 are also 4, and the first through holes 24 of the shear lower box 22 are also 4, and the three are provided in a one-to-one correspondence. The guide posts 232 can be 2, which are used to connect with the two first through holes 24 on the diagonal of the shear lower box 22.

[0041] When the second mounting member 422 is disposed on the lower side of the detection platform 1, a fourth through hole 2311 is disposed on the second mounting plate 231, and the fourth pusher 421 passes through the fourth through hole 2311 to connect with the first pusher 26; the diameter of the fourth through hole 2311 is smaller than the diameter of the first pusher 26, and is greater than or equal to the diameter of the third pusher 414. Specifically, the second mounting plate 231 is a rectangular plate-shaped structure, the fourth through hole 2311 can be located on the center line of the second mounting plate 231, and the central axis of the fourth through hole 2311 is aligned with the central axis of the shear upper box 21 and the shear lower box 22, and the guide column 232 is located at the four corners of the second mounting plate 231. The diameter of the fourth through hole 2311 is smaller than the diameter of the first pushing member 26 and is greater than or equal to the diameter of the third pushing member 414. The setting of the fourth through hole 2311 is used, on the one hand, to position the lower end of the first pushing member 26 to prevent the first pushing member 26 from escaping from the accommodating chamber 25; on the other hand, it can ensure that the fourth pushing member 421 can pass through the fourth through hole 2311 to connect with the first pushing member 26, thereby driving the first pushing member 26 to move upward along the accommodating chamber 25.

[0042] See also Figure 5 , a connecting component is provided at the connecting end of the first pusher 26 and the fourth pusher 421; the connecting component is a cross groove 261 provided on the first pusher 26 and a cross protrusion 4211 provided on the fourth pusher; or the connecting component is a cross protrusion 4211 provided on the first pusher 26 and a cross groove 261 provided on the fourth pusher. By providing the cross protrusion 4211 and the cross groove 261 structure, the first pusher 26 and the fourth pusher 421 can be connected together, and the central axis of the first pusher 26 and the fourth pusher 421 can be aligned, so that the fourth pusher 421 can smoothly push the first pusher 26 to move upward

[0043] See also Figure 1-2 6. The transfer module 3 includes a second drive assembly 31, a third mounting member 32, a third drive assembly 33 and two first clamping members 34 arranged opposite to each other for clamping the rubber sand; the second drive assembly 31 is arranged on the detection platform 1, and the third mounting member 32 is connected to the second drive assembly 31; the third drive assembly 33 is arranged on the third mounting member 32, and the third drive assembly 33 is used to drive the two first clamping members 34 to move in opposite directions; the second drive assembly 31 is used to drive the third mounting member 32 to move in a direction close to or away from the shear upper box 21. Specifically, the third mounting member 32 is an L-shaped plate structure, which is used to connect with the second drive assembly 31, and can also provide an installation place for the third drive assembly 33 and the first clamping member 34.

[0044] The second driving assembly 31 includes a second driving member 311, a second screw rod 312, a second guide member 313, and a first fixing member 314; the second driving member 311, the second guide member 313, and the first fixing member 314 are arranged on the detection platform 1; one end of the second screw rod 312 is connected to the second driving member 311, and the other end is connected to the first fixing member 314; the third mounting member 32 is connected to the second screw rod 312, and is slidably connected to the second guide member 313; the second driving member 311 is used to drive the second screw rod 312 to rotate, and then drive the third mounting member 32 to slide along the second guide member 313. Specifically, the second driving member 311 can be a motor. The second guide member 313 can be a guide rail, and there are two second guide members 313. A second guide member 313 is respectively arranged on both sides of the second screw rod 312 to ensure the movement stability of the third mounting member 32. The first fixing member 314 is a plate-like structure, which is used to position one end of the second screw rod 312. It can be understood that the other end of the second screw rod 312 is transmission-connected to the second driving member 311 and also plays a positioning role.

[0045] The third driving assembly 33 includes a third driving member 331, a third screw rod 332 and a third guide member 333; the third driving member 331 and the third guide member 333 are arranged on the second mounting member 422, the third screw rod 332 is connected to the third driving member 331, one end of which is connected to one of the first clamping members 34, and the other end is connected to the other first clamping member 34; the two first clamping members 34 are slidably connected to the third guide member 333; the third driving member 331 is used to drive the third screw rod 332 to rotate, and then drive the two first clamping members 34 to move in opposite directions along the third guide member 333. The first clamping member 34 is provided with a clamping portion and a connecting portion for clamping the rubber sand, the clamping portion is in an arc shape, and after the two first clamping members 34 move toward each other, the two clamping portions are enclosed into a cylindrical shape for clamping the rubber sand. The connecting portion is used to connect with the third screw rod 332, the third driving member 331 is arranged between the two first clamping members 34, and the two ends of the third screw rod 332 are used to connect with the clamping portion of the first clamping member 34. The third driving member 331 can be a motor, and the third guide member 333 can be a guide rail. Of course, the third guide member 333 can also be other guide structures, and this embodiment does not limit this. It can be understood that in order to realize the movement towards and away from each other of the two first clamping members 34, the thread rotation directions of the two ends of the third screw rod 332 are opposite. For example, the thread rotation direction of the connection end of the third screw rod 332 with one of the first clamping members 34 is right-handed, and the thread rotation direction of the connection end with the other first clamping member 34 is left-handed.

[0046] The transfer module 3 also includes a second clamping member 35, a fourth guide member 36, a first limit block 37, a second limit block 38 and a third elastic member 39; the second clamping member 35 is used to connect with the bottom of the rubber sand; the fourth guide member 36 and the first limit block 37 are arranged on the other side of the third mounting member 32 opposite to the side where the third driving assembly 33 is arranged; the second clamping member 35 is arranged on the fourth guide member 36, and the second limit block 38 is arranged on the second clamping member 35; one end of the third elastic member 39 is connected to the first limit block 37, and the other end is connected to the second limit block 38; the second limit block 38 is used to abut against the first fixing member 314 arranged on the detection platform 1 to limit the maximum movement distance of the second clamping member to move close to the shear upper box 21. Specifically, the second clamping member 35, the fourth guide member 36, the first limit block 37, the second limit block 38 and the third elastic member 39 are arranged on the side of the third mounting member 32 close to the detection platform 1, and the first clamping member 34 is arranged on the side away from the detection platform 1. The clamping part of the second clamping member 35 is a circular structure. When the clamping parts of the two first clamping members 34 are enclosed into a cylindrical shape, the second clamping member 35 acts as the bottom of the cylinder to form a cylindrical groove structure for fixing the rubber sand in the cylindrical groove structure. The first limit block 37 is connected to the side of the third mounting member 32, and the second limit block 38 is arranged on the connecting part of the second clamping member 35. One end of the second limit block 38 is used to abut against the first fixing member 314 to limit the displacement of the second clamping member 35. The fourth guide member 36 can be a guide rail, and the third elastic member 39 can be a tension spring. Of course, the fourth guide member 36 and the third elastic member 39 can also be other structures, which are not limited in this embodiment.

[0047] In one embodiment, the two first clamping members 34 are provided with a relief portion 341 for avoiding the second clamping member 35, and the diameter of the clamping portion of the second clamping member 35 is greater than or equal to the inner diameter of the cylindrical structure enclosed by the clamping portions of the two first clamping members 34, and smaller than the outer diameter of the cylindrical structure enclosed by the clamping portions of the two first clamping members 34. Specifically, the relief portion 341 is a notch provided at the bottom of the first clamping member 34, and the size of the relief portion 341 is adapted to the shape of the clamping portion of the second clamping member 35. Due to the provision of the relief portion 341, the bottoms of the first clamping member 34 and the second clamping member 35 can maintain contact with the top surface of the shear upper box 21, thereby preventing the rubber sand particles from spilling out through the gap between the first clamping member 34 and the top surface of the shear upper box 21.

[0048] When the second driving assembly 31 drives the third mounting member 32 to move in the direction close to the shear upper box 21, the bottom of the second clamping member 35 and the bottom of the first clamping member 34 contact the top surface of the shear upper box 21; then as the second driving assembly 31 continues to move, the second limit block 38 abuts against the first fixing member 314, at which time the bottom surface of the clamping portion of the second clamping member 35 keeps in contact with the top surface of the shear upper box 21, and the bottom surface of the second clamping member 35 is not above the accommodating chamber 25. When the second driving assembly 31 continues to move, the second clamping member 35 does not change its position relative to the shear upper box 21 due to the limiting effect of the second limit block 38, so the second driving assembly 31 can only drive the two first clamping members 34 to continue to move in the direction close to the shear upper box 21, and drive the rubber sand to approach the accommodating chamber 25, and finally make the rubber sand just above the accommodating chamber 25, and in the process of continuing to move, the third elastic member 39 is stretched. After the loading is completed, the third driving member 331 drives the two clamping members to move in opposite directions, and then the second driving assembly 31 drives the first clamping member 34 to move away from the shear upper box 21. When the movement reaches the position where the second limit block 38 and the first fixing member 314 are disengaged, the second clamping member 35 can be driven to reset due to the restoring force of the third elastic member 39. It can be understood that due to the material properties of the rubber sand, after the rubber sand loses the lifting force of the second clamping member 35 at the bottom, the bottom of the rubber sand gradually contacts the top surface of the shear upper box 21, and with the abutment of the clamping part of the first clamping member 34 against the side of the rubber sand, the rubber sand can also be placed directly above the accommodating cavity 25.

[0049] In one embodiment, a closing component for closing the avoidance portion 341 is further provided on the first clamping member 34. Specifically, the bottom of the first clamping member 34 is recessed inward to form a groove 342. A closing member 344 and a fourth elastic member 343 are provided in the groove 342. One end of the fourth elastic member 343 is connected to the bottom of the groove 342, and the other end is connected to the closing member 344. When the clamping portion of the second clamping member 35 is located at the bottom of the first clamping member 34, the second clamping member 35 drives the closing member 344 to move into the groove 342, so that the closing member opens the avoidance portion 341, and the fourth elastic member 343 is compressed; when the clamping portion of the second clamping member 35 is not located at the bottom of the clamping portion of the first clamping member 34, the closing member uses the elastic force of the fourth elastic member 343 to make one end of the closing member extend out of the groove 342 to close the avoidance portion 341. The closing member 344 may be an arc-shaped connecting member, and the fourth elastic member 343 may be a spring. Of course, the fourth elastic member may also be other structures as long as it can drive the closing member to return to the position of the closing avoidance portion 341. In one implementation, a first guide portion is provided on the side surface of the second clamping member 35, and a second guide portion is provided on the bottom surface of the closing member. Specifically, the first guide portion and the second guide portion are inclined surfaces for guiding the second clamping member 35 and the closing member when they are connected.

[0050] See also Figure 2 , 4 The detection module 5 includes a propulsion component 51 and a detection component 52; the propulsion component 51 includes a fourth driving member 511 and a fifth guide member 512; the fourth driving member 511 and the fifth guide member 512 are arranged on the detection platform 1; the fourth driving member 511 is used to drive the shearing box 22 and the guide component 23 to slide along the fifth guide member 512; the detection component 52 includes a detection member 521 and an abutment member 522, one end of the abutment member 522 is connected to the shearing box 22, and the other end is connected to the detection member 521, and the detection member 521 is used to detect the movement displacement of the shearing box 22 and / or detect the load size applied to the shearing box 22 by the fourth driving member 511.

[0051] Specifically, the fourth driving member 511 may be a cylinder, the fifth guide member 512 may be a guide rail, and the second mounting plate 231 of the guide assembly 23 is slidably connected to the fifth guide member 512. The abutment member 522 may be a cylindrical structure, used to connect the shear lower box 22 and the detection member 521. The detection member 521 may be a distance sensor, a dial indicator or other structures for detecting the movement displacement of the shear lower box 22, or a dynamometer or other structures for detecting the load size of the shear lower box 22.

[0052] The present invention also provides an experimental method for a rubber sand alluvial soft soil roadbed, comprising the above-mentioned experimental device for a rubber sand alluvial soft soil roadbed, and further comprising:

[0053] Loading step S100: using the transfer module 3 to transfer the rubber sand to be tested to the upper part of the accommodating cavity 25 of the shear upper box 21, and then using the pushing module 4 to push the rubber sand to be tested into the accommodating cavity 25 of the shear upper box 21 and the shear lower box 22.

[0054] The feeding step S100 is specifically as follows: in the initial state, the clamping parts of the two first clamping members 34 enclose a cylindrical through hole, and the clamping part of the second clamping member 35 is located at the bottom of the cylindrical through hole enclosed by the two first clamping members 34 to form a cylindrical groove. After the experimenter puts the rubber sand to be tested into the cylindrical groove, the second driving assembly 31 drives the third mounting member 32, and the first clamping member 34, the second clamping member 35 and other structures arranged on the third mounting member 32 to move in the direction close to the shear upper box 21. When the rubber sand to be tested is located above the shear upper box 21, the second limit block 38 abuts against the first fixing member 314, so that the second clamping member 35 remains stationary, and then the second driving assembly 31 continues to drive the first clamping member 34 to move, so that the rubber sand to be tested moves to the top of the accommodating chamber 25, and at this time the third elastic member 39 is compressed.

[0055] Then the first driving assembly 43 of the pushing module 4 drives the upper pushing assembly 41 and the lower pushing assembly 42 to move downward, so that the positioning column 412 is first inserted into the first through hole 24 of the shear upper box 21, and then inserted into the first through hole 24 of the shear lower box 22. When the positioning column 412 begins to be inserted into the first through hole 24 of the shear lower box 22, the third pushing member 414 abuts against the upper end surface of the rubber sand to be tested on the transfer module 3, and in the process of continuing to move downward, drives the rubber sand to be tested to move to the accommodating cavity 25 of the shear upper box 21 and the shear lower box 22. When the rubber sand is completely accommodated in the accommodating chamber 25, the second pushing member 413 abuts against the top surface of the shear upper box 21, and the first driving assembly 43 continues to drive the upper pushing assembly 41 to move downward. At this time, the second pushing member 413 drives the shear upper box 21 and the shear lower box 22 to move downward along the guide assembly 23 as a whole. Due to the abutment of the guide column 232 of the guide assembly 23 on the positioning column 412, the positioning column 412 withdraws from the first through hole 24 of the shear lower box 22. When the positioning column 412 just withdraws from the first through hole 24 of the shear lower box 22, the loading step is completed.

[0056] Detection step S200: the propulsion assembly 51 pushes the shear box 22 and the guide assembly 23 to move, and then the detection assembly 52 is used to detect the movement displacement of the shear box 22 and / or detect the load size applied to the shear box 22 by the fourth driving member 511.

[0057] The detection step S200 is specifically as follows: using the fourth driving member 511 of the propulsion assembly 51 to push the shear box 22 and the guide assembly 23 to move as a whole, that is, move to the right, and the detection member 521 of the detection assembly 52 detects the movement displacement of the shear box 22 and / or detects the load size applied to the shear box 22 by the fourth driving member 511.

[0058] Material taking step S300: using the pushing module 4 to push the rubber sand after inspection out of the accommodating cavity 25 of the shear upper box 21 and the shear lower box 22, and then using the transfer module 3 to transfer the rubber sand after inspection to a position away from the shear upper box 21.

[0059] The material taking step S300 is specifically as follows: the first driving assembly 43 of the pushing module 4 drives the upper pushing assembly 41 and the lower pushing assembly 42 to move upward, so that the fourth pushing member 421 is connected to the first pushing member 26. The upward movement of the fourth pushing member 421 drives the rubber sand after the inspection to exit the accommodating chamber 25 of the shear upper box 21 and the shear lower box 22, and makes the rubber sand after the inspection be located in the cylindrical structure formed by the two first clamping members 34. After the rubber sand after the inspection is completely out of the accommodating chamber 25, the second driving assembly 31 of the transfer module 3 drives the first clamping member 34 to move away from the shear upper box 21. In the process of continuing to move, when the second limit block 38 and the first fixing member 314 are disengaged, the third elastic member 39 drives the second clamping member 35 to be located at the bottom of the rubber sand after the inspection, that is, the first clamping member 34 and the second clamping member 35 form a cylindrical groove for accommodating. Then, the second driving assembly 31 drives the first clamping member 34 and the second clamping member 35 to move in a direction away from the shearing upper box 21. When the second driving assembly 31 moves to the limit or when it is convenient for the operator to take off the rubber sand after the test, the movement stops; at this time, the experimenter can take off the rubber sand after the test on the transfer module 3.

[0060] To summarize, the present invention automatically transfers the rubber sand to be tested to the top of the shear upper box 21 in the transfer module 3, and then uses the first driving component 43 to drive the upper pushing component 41 and the lower pushing component 42 to move downward, so that the positioning column 412 of the upper pushing component 41 is inserted into the first through hole 24 of the shear upper box 21 and the shear lower box 22, so as to realize the positioning of the shear upper box 21 and the shear lower box 22; and after the positioning column 412 positions the shear upper box 21 and the shear lower box 22, the third pushing member 414 is used to push the rubber sand to be tested into the accommodating cavity 25 of the shear upper box 21 and the shear lower box 22, and finally the second pushing member 413 is used to drive the shear upper box 21 and the shear lower box 22 to move as a whole, so that the positioning column 412 exits the first through hole 24 of the shear lower box 22, and the loading operation is completed. After the detection is completed, the first driving assembly 43 is used to drive the upper pushing assembly 41 and the lower pushing assembly 42 to move upward, so that the fourth pushing member 421 is connected to the first pushing member 26, and the fourth pushing member 421 is driven to move upward, thereby driving the rubber sand that has been tested to exit the accommodating chamber 25, so as to facilitate the transfer of the transfer module 3. That is, the loading, testing, and pushing steps of the experimental device of this scheme are all completed automatically, without the need for manual operation by the experimenter, reducing the workload of the experimenter and improving the shear strength detection efficiency of the rubber sand. Therefore, the present invention effectively overcomes various shortcomings in the prior art and has a high industrial utilization value.

[0061] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical ideas disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. An experimental device for rubber sand alluvial soft soil roadbed, characterized in that: The experimental device comprises: a detection platform, a shear box module, a transfer module, a pusher module and a detection module; The shear box module, the transfer module, the pusher module and the detection module are arranged on the detection platform; The shear box module comprises an upper shear box, a lower shear box and a guide assembly; the upper shear box is arranged at the upper end of the lower shear box, and the lower end of the lower shear box is slidably connected with the guide assembly in a direction perpendicular to the detection platform; the guide assembly is slidably connected with the detection platform in a direction parallel to the detection platform; the upper shear box and the lower shear box are provided with a first through hole and a receiving cavity for receiving rubber sand; a first pushing member is arranged in the receiving cavity, and one end of the first pushing member extends out of the receiving cavity and abuts against the guide assembly; The pushing module includes an upper pushing assembly, a lower pushing assembly and a first driving assembly; the first driving assembly is used to drive the upper pushing assembly and the lower pushing assembly to move up and down in a direction perpendicular to the detection platform; The upper pushing assembly includes a first mounting member connected to the first driving assembly, and a positioning column for cooperating with the first through hole and a second pushing member for driving the shearing upper box and the shearing lower box to move downward, and a third pushing member for driving the rubber sand to be tested to move downward into the accommodating chamber; the length of the positioning column is greater than the length of the second pushing member and the third pushing member; the length of the second pushing member is less than or equal to the length of the third pushing member; when the first driving assembly drives the upper pushing assembly and the lower pushing assembly to move downward, the guide assembly is also used to abut against the positioning column to drive the positioning column to exit the first through hole set in the shearing lower box; The lower pushing assembly is provided with a fourth pushing member, and when the first driving assembly drives the upper pushing assembly and the lower pushing assembly to move upward, the first pushing member is connected to the fourth pushing member to drive the rubber sand after detection to move upward to the outside of the accommodating chamber; The transfer module is used to transfer the rubber sand to be tested and the rubber sand that has been tested; the detection module is used to drive the shear box and the guide assembly to move in a direction parallel to the detection platform to detect the shear strength of the rubber sand.

2. The experimental device for rubber sand alluvial soft soil roadbed according to claim 1, characterized in that: The upper pusher assembly also includes a first elastic member; A second through hole is also provided on the first mounting member, and a first limiting portion is provided at one end of the positioning column; the positioning column is passed through the second through hole, and the first elastic member is sleeved on the positioning column, with one end of the first elastic member connected to the positioning column and the other end connected to a side of the first mounting member away from the first limiting portion.

3. The experimental device for rubber sand alluvial soft soil roadbed according to claim 1 is characterized by: The first driving assembly includes a first mounting plate, a first driving member, a first guide member and a first screw rod; The first mounting plate is disposed on the detection platform; the first guide member is disposed on the first mounting plate; the upper pusher assembly and the lower pusher assembly are slidably connected to the first guide member; The first driving member is arranged on the detection platform, the first screw rod is connected to the first driving member, one end of the first screw rod is connected to the upper pushing assembly, and the other end of the first screw rod is connected to the lower pushing assembly; The first driving member is used to drive the first screw rod to rotate, thereby driving the upper pusher assembly and the lower pusher assembly to slide along the first guide member; And / or, a third through hole is provided on the detection platform, and the fourth pushing member passes through the third through hole and is connected to the first pushing member.

4. The experimental device for rubber sand alluvial soft soil roadbed according to claim 1 is characterized by: The guide assembly includes a second mounting plate, a plurality of guide posts and a plurality of second elastic members, wherein the second mounting plate is slidably connected to the detection module on one side close to the detection platform; one end of the plurality of guide posts is connected to the side of the second mounting plate away from the detection platform, and the other end extends into the first through hole provided on the shear lower box; the second elastic member is sleeved on the guide post, one end of which is connected to the second mounting plate, and the other end of which is connected to the shear lower box; the second elastic member and the guide post are provided in a one-to-one correspondence.

5. The experimental device for rubber sand alluvial soft soil roadbed according to claim 4 is characterized by: The second mounting plate is provided with a fourth through hole, and the fourth pushing member passes through the fourth through hole and is connected with the first pushing member; The diameter of the fourth through hole is smaller than the diameter of the first pushing member, and is greater than or equal to the diameter of the third pushing member.

6. The experimental device for rubber sand alluvial soft soil roadbed according to claim 5, characterized in that: A connecting component is provided at the connecting end of the first pushing member and the fourth pushing member; The connecting component is a cross groove arranged on the first pushing member and a cross protrusion arranged on the fourth pushing member; Alternatively, the connecting component is a cross protrusion arranged on the first pushing member and a cross groove arranged on the fourth pushing member.

7. The experimental device for rubber sand alluvial soft soil roadbed according to claim 1 is characterized by: The transfer module comprises a second drive assembly, a third mounting member, a third drive assembly and two first clamping members arranged opposite to each other for clamping the rubber sand; The second driving assembly is arranged on the detection platform, and the third mounting member is connected to the second driving assembly; the third driving assembly is arranged on the third mounting member, and the third driving assembly is used to drive the two first clamping members to move in opposite directions; the second driving assembly is used to drive the third mounting member to move in a direction close to or away from the shearing upper box.

8. The experimental device for rubber sand alluvial soft soil roadbed according to claim 7, characterized in that: The second driving assembly includes a second driving member, a second screw rod, a second guide member, and a first fixing member; The second driving member, the second guide member and the first fixing member are arranged on the detection platform; one end of the second screw rod is connected to the second driving member, and the other end is connected to the first fixing member; the third mounting member is connected to the second screw rod and is slidably connected to the second guide member; the second driving member is used to drive the second screw rod to rotate, thereby driving the third mounting member to slide along the second guide member; And / or, the third driving assembly includes a third driving member, a third screw rod and a third guide member; the third driving member and the third guide member are arranged on the third mounting member, the third screw rod is connected to the third driving member, one end of the third screw rod is connected to one of the first clamping members, and the other end is connected to the other first clamping member; the two first clamping members are slidably connected to the third guide member; the third driving member is used to drive the third screw rod to rotate, thereby driving the two first clamping members to move in opposite directions along the third guide member; And / or, the transfer module also includes a second clamping member, a fourth guide member, a first limit block, a second limit block and a third elastic member; the second clamping member is used to connect to the bottom of the rubber sand; the fourth guide member and the first limit block are arranged on the other side of the third mounting member opposite to the side on which the third driving assembly is arranged; the second clamping member is arranged on the fourth guide member, and the second limit block is arranged on the second clamping member; one end of the third elastic member is connected to the first limit block, and the other end is connected to the second limit block; the second limit block is used to abut against the first fixing member arranged on the detection platform to limit the maximum movement distance of the second clamping member approaching the shearing box.

9. The experimental device for rubber sand alluvial soft soil roadbed according to claim 1, characterized in that: The detection module includes a propulsion component and a detection component; The propulsion assembly includes a fourth driving member and a fifth guiding member; the fourth driving member and the fifth guiding member are arranged on the detection platform; the fourth driving member is used to drive the shearing lower box and the guiding assembly to slide along the fifth guiding member; The detection component includes a detection member and an abutment member, one end of the abutment member is connected to the shear box, and the other end is connected to the detection member, and the detection member is used to detect the movement displacement of the shear box and / or detect the load size applied to the shear box by the fourth driving member.

10. An experimental method for rubber sand alluvial soft soil roadbed, characterized in that: The experimental device for the rubber sand alluvial soft soil roadbed as claimed in claim 9 further comprises: Loading step: using the transfer module to transfer the rubber sand to be tested to the upper part of the accommodating cavity of the shear upper box, and then using the pushing module to push the rubber sand to be tested into the accommodating cavities of the shear upper box and the shear lower box; Detection step: the propulsion assembly pushes the shear lower box and the guide assembly to move, and then uses the detection assembly to detect the movement displacement of the shear lower box and / or detects the load size applied to the shear lower box by the fourth driving member; Material taking steps: using the pushing module to push the rubber sand after testing out of the accommodating chambers of the shear upper box and the shear lower box, and then using the transfer module to transfer the rubber sand after testing to a position away from the shear upper box.

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