An experimental device and method for the coupling effect between a spiral structure and a sand body

Abstract

The present invention provides an experimental device for the coupling effect between a spiral structure and a sand body, comprising: a sand tank and a support frame, the support frame being placed above the sand tank; a set of translation slide bar assemblies are installed on the support frame, and a translation mechanism is installed on the translation slide bar assemblies in a sliding manner; an angle sensor is installed on the translation mechanism for measuring the rotation angle of the translation mechanism, and a displacement sensor is installed on the translation slide bar assemblies for measuring the displacement of the translation mechanism on the translation slide bar assemblies; the translation mechanism fixes a spiral mechanism, and a spiral structure is installed on the spiral mechanism, and the spiral structure is configured to rotate along a first rotation direction and along a second rotation direction; a spiral drive motor electronic speed controller is installed on the spiral mechanism for measuring the rotational speed and torque when the spiral structure rotates. The present invention provides a reference basis for the matching between the spiral structure and the spiral motor by measuring the torque parameters of the spiral structure under different sand body conditions, different immersion depths, and different motion modes.

Description

Technical Field

[0001] The present invention relates to the technical field of sub - sand spiral structure - sand body test technology, and particularly relates to a test device and a test method for the coupling effect between a spiral structure and a sand body. Background Art

[0002] Spiral structures are relatively common in fields such as transportation and civil engineering, such as horizontal directional drills, shield machines, and spiral propulsion vehicles. When calculating the torque of a spiral structure entering sand, due to the changes in sand body conditions and movement modes, it is difficult to design the spiral structure and match the spiral structure with the spiral motor. Summary of the Invention

[0003] The present invention provides a test device and a test method for the coupling effect between a spiral structure and a sand body to solve the technical problem in the prior art that due to the changes in sand body conditions and movement modes, it is difficult to design the spiral structure and match the spiral structure with the spiral motor.

[0004] The technical solution provided by the present invention is as follows:

[0005] An object of the present invention is to provide a test device for the coupling effect between a spiral structure and a sand body. The test device includes: a sand tank and a support frame, the support frame is placed above the sand tank; a set of translation slide bar components is installed on the support frame, and a translation mechanism is installed on the translation slide bar components in a sliding manner;

[0006] Among them, an angle sensor is installed on the translation mechanism for measuring the rotation angle of the translation mechanism, and a displacement sensor is installed on the translation slide bar components for measuring the displacement of the translation mechanism on the translation slide bar components;

[0007] Among them, the translation mechanism fixes a spiral mechanism, and a spiral structure is installed on the spiral mechanism. Among them, the spiral structure is configured to rotate in a first rotation direction and rotate in a second rotation direction;

[0008] A spiral drive motor electronic speed controller is installed on the spiral mechanism for measuring the rotational speed and torque when the spiral structure rotates.

[0009] In a preferred embodiment, the translation mechanism includes a translation slider assembly, a balance link, a translation connecting rod, and an angle measuring rod. The translation slider assembly is sleeved on the translation slide bar components in a sliding manner;

[0010] The translation slider assembly includes a first end located above the translation slide bar components and a second end located below the translation slide bar components;

[0011] One end of the balance link is provided with a first heavy object block. The other end of the balance link is hinged to one end of the translation connecting rod. The other end of the translation connecting rod is hinged to one end of the angle measuring rod. The other end of the angle measuring rod is hinged to the second end of the translation slider assembly. The first end of the translation slider assembly is hinged to the balance link;

[0012] The angle sensor is installed at the second end of the translation slider assembly.

[0013] In a preferred embodiment, a balance base is fixed to at least one end of the translation slider assembly;

[0014] A pulley is installed on the balance base. A connecting rope is fixed to the first end of the translation slider assembly. The connecting rope suspends a second heavy object block through the balance base;

[0015] The displacement sensor is fixed to the balance base.

[0016] In a preferred embodiment, the screw mechanism includes a first rotating motor connecting piece and a second rotating motor connecting piece;

[0017] The first rotating motor connecting piece is fixed to the translation mechanism, and the first rotating motor connecting piece is hinged to the second rotating motor connecting piece;

[0018] A first rotating motor is fixed to the second rotating motor connecting piece. The output shaft of the first rotating motor is connected to the first rotating motor connecting piece;

[0019] When the first rotating motor rotates, it drives the second rotating motor connecting piece to rotate relative to the first rotating connecting piece in a first rotating direction.

[0020] In a preferred embodiment, the screw mechanism further includes a right-angle connecting piece,

[0021] A second rotating motor is fixed to the second rotating motor connecting piece. The output shaft of the second rotating motor is connected to the first connecting plate of the right-angle connecting piece;

[0022] When the second rotating motor rotates, the right-angle connecting piece responds to the second rotating motor and rotates relative to the second rotating connecting piece in a second rotating direction;

[0023] The second connecting plate of the right-angle connecting piece is fixed with a screw driving motor, and the electronic speed controller of the screw driving motor is installed on the right-angle connecting piece;

[0024] The screw driving motor is used to drive the screw structure to rotate.

[0025] In a preferred embodiment, a crossed roller bearing is provided between the second rotating motor connecting plate and the right-angle connecting member.

[0026] In a preferred embodiment, a motor synchronous pulley is fixed on the output shaft of the screw drive motor, and a screw synchronous pulley is provided on the screw structure;

[0027] A synchronous belt is installed between the motor synchronous pulley and the screw synchronous pulley, and the screw drive motor drives the rotation of the screw structure through the synchronous belt.

[0028] In a preferred embodiment, a screw reinforcement structure is installed at the end of the output shaft of the screw drive motor and rotates relative to the screw reinforcement structure;

[0029] The screw structure is connected to the screw reinforcement structure and rotates relative to the screw reinforcement structure.

[0030] In a preferred embodiment, a fixed vertical rod track of the sand tank is provided, and the support frame is installed on the vertical rod track;

[0031] A plurality of fixed points are provided on the vertical rod track for adjusting the position of the mounting bracket on the vertical rod track;

[0032] The translation slider assembly is installed on the support frame and slides relative to the support frame.

[0033] Another object of the present invention is to provide a test method for the coupling effect of a screw structure and sand. The test method uses the test device provided by the present invention for testing, and includes the following method steps:

[0034] S1. Adjust the position of the support frame on the vertical rod track so that the support frame is at a certain height position;

[0035] S2. Adjust the rotation of the screw structure in the first rotation direction and the second rotation direction to determine the direction of the screw structure and the angle of embedding in the sand;

[0036] S3. Adjust the masses of the first heavy block and the second heavy block so that the translation mechanism does not slide on the translation slider assembly and does not rotate itself;

[0037] S4. The screw structure rotates, interacts with the sand in the sand tank, drives the translation mechanism to slide on the translation slider assembly, and rotates itself;

[0038] S5. Electrically adjust the screw drive motor, measure the rotational speed and torque when the screw structure rotates; the displacement sensor measures the displacement of the translation mechanism on the translation slider assembly; the angle sensor measures the rotation angle of the translation mechanism.

[0039] The above technical solution of the present invention has at least the following beneficial effects compared with the prior art:

[0040] The present invention provides an experimental device and an experimental method for the coupling effect between a spiral structure and a sand body. By measuring the torque parameter data of the spiral structure under different sand body conditions, different immersion depths, and different movement modes, motor matching is carried out, providing a reference basis for the design of the spiral structure and the matching of the spiral structure and the spiral motor.

[0041] The present invention provides an experimental device and an experimental method for the coupling effect between a spiral structure and a sand body. Through the first rotating motor and the second rotating motor, the spiral structure can adjust the pitching angle and the steering angle, and measure the torque parameter data of the spiral structure under different movement states such as sand drilling and sand discharging and movement under the sand.

[0042] The present invention provides an experimental device and an experimental method for the coupling effect between a spiral structure and a sand body. By installing the first heavy object block and the second heavy object block to balance gravity and friction, the experimental data is made more accurate.

[0043] The present invention provides an experimental device and an experimental method for the coupling effect between a spiral structure and a sand body, which solves the problem of measuring the spiral structure parameters under different sand body conditions, different immersion depths, and different movement modes. The present invention can realize the movement of the spiral structure under different sand body parameters and movement modes, and can accurately measure the driving torque parameters of the spiral structure, solving the problem of the lack of spiral structure-sand body coupling tests, and providing a reference basis for the design and matching of the spiral structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0045] Figure 1 is a schematic diagram of the overall structure of an experimental device for the coupling effect between a spiral structure and a sand body according to the present invention.

[0046] Figure 2 is a schematic diagram of the translation mechanism installed on the translation slide rod assembly according to the present invention.

[0047] Figure 3 is a plan view of the translation mechanism installed on the translation slide rod assembly in an embodiment of the present invention.

[0048] Figure 4 is a plan view of the translation mechanism installed on the translation slide rod assembly in another embodiment of the present invention.

[0049] Figure 5 It is a schematic structural diagram of the spiral mechanism of the present invention. Detailed implementation manners

[0050] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0051] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the ordinary meanings understood by those of ordinary skill in the art to which the present invention pertains. The "first", "second" and similar terms used in the present invention do not denote any order, quantity or importance, but are only used to distinguish different components. Similarly, the terms such as "a", "an" or "the" do not denote a quantity limitation, but mean that there is at least one. The terms such as "comprising" or "including" mean that the elements or objects appearing before this term cover the elements or objects listed after this term and their equivalents, without excluding other elements or objects. The terms such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0052] It should be noted that the "upper", "lower", "left", "right", "front", "rear", etc. used in the present invention are only used to represent relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0053] As Figure 1 shown, according to an embodiment of the present invention, a test device for the coupling action of a spiral structure and a sand body is provided, including: a sand tank 1, a vertical rod track 2, a support frame 3, a translation slide rod assembly 4, a translation mechanism 5 and a spiral mechanism 6.

[0054] The sand tank 1 contains the sand body for the test, and a fluidized bed device is installed at the bottom of the sand tank 1 to make the sand body present different fluidization state effects. By installing the fluidized bed device in the present invention to make the sand body present different fluidization state effects, the torque parameter data of the spiral structure under different sand body conditions can be tested.

[0055] The vertical rod track 2 is fixed on the sand tank 1, and the support frame 3 is installed on the vertical rod track 2. In this embodiment, there are exemplarily 4 vertical rod tracks 2, and in some embodiments, the number of vertical rod tracks 2 may be more.

[0056] The translation slider assembly 4 is installed on the support frame 3 and slides relative to the support frame 3. The direction in which the translation slider assembly 4 slides relative to the support frame 3 is as shown by the arrow a in Figure 1 The support frame 3 is installed on the vertical rod track 2 and is placed above the sand tank 1. A set of translation slider assemblies 4 is installed on the support frame 3. A translation mechanism 5 is installed on the translation slider assembly 4 in a sliding manner. The direction in which the translation mechanism 5 slides relative to the translation slider assembly 4 is as shown by the arrow b in Figure 1 The translation mechanism 5 fixes the screw mechanism 6.

[0057] According to an embodiment of the present invention, a plurality of fixing points are provided on the vertical rod track 2, and one fixing point is provided at intervals for adjusting the position of the mounting bracket 3 on the vertical rod track 2, so as to adjust the heights of the translation slider assembly 4, the translation mechanism 5, and the screw mechanism 6.

[0058] As shown in Figure 2 and Figure 3 In order to more clearly illustrate the present invention, the two ends of the translation slider assembly 4 are respectively defined as the front end and the rear end in the embodiment.

[0059] According to an embodiment of the present invention, the translation mechanism 5 includes a translation slider assembly 501, a balance link 502, a translation connecting rod 503, and an angle measuring rod 504.

[0060] The translation slider assembly 501 is sleeved on the translation slider assembly 4 in a sliding manner. The translation slider assembly 4 includes a first end 5011 located on the upper side of the translation slider assembly 4 and a second end 5012 located on the lower side of the translation slider assembly 4.

[0061] One end of the balance link 502 is provided with a first weight block 505. The other end of the balance link 502 is hinged to one end of the translation connecting rod 503. The other end of the translation connecting rod 503 is hinged to one end of the angle measuring rod 504. The other end of the angle measuring rod 504 is hinged to the second end 5012 of the translation slider assembly 501. The first end 5011 of the translation slider assembly 501 is hinged to the balance link 502.

[0062] Specifically, the first end 5011 of the translation slider assembly 501 is hinged between the two ends of the balance link 502. Further, the first end 5011 of the translation slider assembly 501 is hinged to the middle position of the balance link 502.

[0063] The translation slider assembly 501, balance link 502, translation connecting rod 503 and angle measuring rod 504 of the present invention form a parallelogram linkage mechanism. When the screw mechanism 6 encounters resistance in the sand body, the angle measuring rod 504 of the parallelogram linkage mechanism rotates around the second end 5012 of the translation slider assembly 501, and at the same time, the translation slider assembly 501 drives the translation mechanism 5 to slide on the translation slider assembly 4.

[0064] According to an embodiment of the present invention, an angle sensor 510 is installed on the translation mechanism 5 for measuring the rotation angle of the translation mechanism 5 (the rotation angle of the angle measuring rod 504), and a displacement sensor 508 is installed on the translation slider assembly 4 for measuring the displacement of the translation mechanism 5 on the translation slider assembly 4.

[0065] Specifically, the angle sensor 510 is installed at the second end 5012 of the translation slider assembly 501, and the rotation angle of the translation mechanism 5 is measured by measuring the rotation angle of the angle measuring rod 504. In some embodiments, the angle sensor 510 can also be installed on the angle measuring rod 504.

[0066] According to an embodiment of the present invention, a balance base 506 is fixed at at least one end of the translation slider assembly 4. In this embodiment, the balance base 506 is fixed at the rear end of the translation slider assembly 4. In some embodiments, the balance base 506 is fixed at the front end of the translation slider assembly 4. In still other embodiments, balance bases 506 are fixed at both the front end and the rear end of the translation slider assembly 4.

[0067] A pulley (not shown in the figure) is installed on the balance base 506. A connecting rope 509 is fixed to the first end 5011 of the translation slider assembly 501. The connecting rope 509 suspends a second heavy object block 507 through the balance base 506. The connecting rope 509 is embedded in the pulley of the balance base 506, and the displacement sensor 508 is fixed on the balance base 506.

[0068] In a further embodiment, the connecting rope 509 is fixed to a pin shaft (pin) that hinges the balance link 502 and the first end 5011 of the translation slider assembly 501.

[0069] As Figure 5 shown, according to an embodiment of the present invention, the translation mechanism 5 fixes the screw mechanism 6, and a screw structure 613 is installed on the screw mechanism 6. The screw structure 613 is configured to rotate in a first rotation direction (the direction shown by the arrow c in Figure 5 ), and rotate in a second rotation direction (the direction shown by the arrow d in Figure 5 ). A screw drive motor speed controller 608 is installed on the screw mechanism for measuring the rotation speed and torque when the screw structure 613 rotates.

[0070] According to an embodiment of the present invention, the screw mechanism 6 further includes a first rotary motor connector 601, a second rotary motor connector 602, a right-angle connector 603, a first rotary motor 604, a second rotary motor 605, and a screw drive motor 606.

[0071] The first rotary motor connector 601 is fixed to the translation mechanism 5, and the first rotary motor connector 601 is hinged to the second rotary motor connector 602. Specifically, the first rotary motor connector 601 is fixed to the translation connecting rod 503 of the translation mechanism 5, and the resistance received by the screw mechanism 6 in the sand body is transmitted to the translation mechanism 5 through the translation connecting rod 503, so that the translation mechanism 5 rotates and slides on the translation slide rod assembly 4.

[0072] According to an embodiment of the present invention, the first rotary motor 604 is fixed on the second rotary motor connector 602, and the output shaft of the first rotary motor 604 is connected to the first rotary motor connector 601. When the first rotary motor 604 rotates, it drives the second rotary motor connector 602 to rotate relative to the first rotary connector 601 in the first rotation direction (such as Figure 5 the direction shown by the arrow c in the figure), thereby driving the screw structure 613 to rotate in the first rotation direction (such as Figure 5 the direction shown by the arrow c in the figure).

[0073] The second rotary motor 605 is fixed on the second rotary motor connector 602, and the output shaft of the second rotary motor 605 is connected to the first connecting plate of the right-angle connector 603. The second connecting plate of the right-angle connector 603 is fixed with the screw drive motor 606, and the electronic speed controller 608 of the screw drive motor is installed on the right-angle connector 603. Further, the electronic speed controller 608 of the screw drive motor is installed on the second connecting plate of the right-angle connector 603 that fixes the screw drive motor 606.

[0074] When the second rotary motor 605 rotates, the right-angle connector 603 responds to the second rotary motor 605 and rotates relative to the second rotary connector 602 in the second rotation direction (such as Figure 5 the direction shown by the arrow d in the figure), thereby driving the screw structure 613 to rotate in the second rotation direction (such as Figure 5 the direction shown by the arrow d in the figure).

[0075] Further, a crossed roller bearing 607 is provided between the second rotary motor connecting plate 602 and the first connecting plate of the right-angle connector 603. Furthermore, the outer ring of the crossed roller bearing 607 is fixed to the second rotary motor connecting plate 602. The inner ring of the crossed roller bearing 607 is fixed to the first connecting plate of the right-angle connector 603, and the inner ring of the crossed roller bearing 607 is connected to the output shaft of the second rotary motor 605.

[0076] According to an embodiment of the present invention, a spiral drive motor 606 is used to drive the rotation of a spiral structure 613. Specifically, a motor synchronous pulley 609 is fixed on the output shaft of the spiral drive motor 606, a spiral synchronous pulley 611 is arranged on the spiral structure 613, a synchronous belt 610 is installed between the motor synchronous pulley 609 and the spiral synchronous pulley 611, and the spiral drive motor 606 drives the rotation of the spiral structure 613 through the synchronous belt 610.

[0077] In one embodiment, a protective shell is arranged outside the motor synchronous pulley 609 and the spiral synchronous pulley 611, and the protection device will not be interfered by the sand body under the sand.

[0078] Furthermore, a spiral reinforcement structure 612 is installed at the end of the output shaft of the spiral drive motor 606, and the output shaft of the spiral drive motor 606 rotates relative to the spiral reinforcement structure 612. The spiral structure 613 is connected to the spiral reinforcement structure 612, and the spiral structure 613 rotates relative to the spiral reinforcement structure 612.

[0079] According to an embodiment of the present invention, a test method for the coupling effect between a spiral structure and a sand body is provided. The test is carried out using the test device provided by the present invention, and the method steps are as follows:

[0080] Step S1: Adjust the position of the support frame 3 on the vertical rod track 2 so that the support frame 3 is at a certain height position.

[0081] A plurality of fixed points are arranged on the vertical rod track 2 of the present invention. By adjusting the installation bracket 3 at different fixed points on the vertical rod track 2, the height of the support frame 3 is adjusted. The translation slide bar assembly 4 is adjusted to slide on the installation bracket 3, thereby adjusting the position of the translation slide bar assembly 4 on the installation bracket 3.

[0082] Step S2: Adjust the spiral structure 613 to rotate along the first rotation direction (such as Figure 5 the direction shown by the arrow c in the figure) and the second rotation direction (such as Figure 5 the direction shown by the arrow d in the figure) to determine the direction of the spiral structure 613 and the angle of embedding in the sand body.

[0083] Specifically, the first rotation motor 604 rotates to drive the second rotation motor connecting piece 602 to rotate relative to the first rotation connecting piece 601 along the first rotation direction (such as Figure 5 the direction shown by the arrow c in the figure). The second rotation motor connecting piece 602 drives the second rotation motor 605, the right-angle connecting piece 603, the spiral drive motor 606, the spiral reinforcement structure 612 and the spiral structure 613 to rotate a certain angle along the first rotation direction.

[0084] The second rotation motor 605 rotates, and the right-angle connecting piece 603 responds to the second rotation motor 605 and rotates relative to the second rotation connecting piece 602 along the second rotation direction (such asFigure 5 Rotate in the direction indicated by arrow d (in the figure), driving the spiral drive motor 606, the spiral reinforcement structure 612, and the spiral structure 613 to rotate a certain angle in the second rotation direction, thereby determining the direction of the spiral structure 613 and the angle of embedding into the sand body.

[0085] Step S3: Adjust the masses of the first weight block 505 and the second weight block 507 so that the translation mechanism 5 does not slide on the translation slider assembly 4 and the translation mechanism 5 itself does not rotate.

[0086] By adjusting the masses of the first weight block 505 and the second weight block 507, the parallelogram linkage mechanism composed of the translation slider assembly 501, the balance link 502, the translation connecting rod 503, and the angle measuring rod 504 of the translation mechanism 5 does not rotate, and at the same time, the translation slider assembly 501 of the translation mechanism 5 does not slide on the translation slider assembly 4. That is, by adjusting the masses of the first weight block 505 and the second weight block 507, the translation mechanism 5 and the spiral mechanism 6 fixed to the translation mechanism 5 are in a balanced state to balance the overall gravity of the device.

[0087] Step S4: The spiral structure 613 rotates and interacts with the sand body in the sand groove, driving the translation mechanism 5 to slide on the translation slider assembly 4 and the translation mechanism 5 itself to rotate.

[0088] Different rotation directions of the spiral structure 613 will result in different force directions of the spiral structure 613. For example, when the spiral structure 613 rotates forward, the sand body generates a resistance on the spiral structure 613 from the front end of the translation slider assembly 4 to the rear end of the translation slider assembly 4 (as Figure 2 indicated by arrow e in the figure).

[0089] When the spiral structure 613 rotates in the reverse direction, the sand body generates a resistance on the spiral structure 613 from the rear end of the translation slider assembly 4 to the front end of the translation slider assembly 4 (as Figure 2 indicated by arrow f in the figure).

[0090] In some embodiments, when the spiral structure 613 rotates forward, the sand body generates a resistance on the spiral structure 613 from the rear end of the translation slider assembly 4 to the front end of the translation slider assembly 4 (as Figure 2 indicated by arrow f in the figure). When the spiral structure 613 rotates in the reverse direction, the sand body generates a resistance on the spiral structure 613 from the front end of the translation slider assembly 4 to the rear end of the translation slider assembly 4 (as Figure 2 indicated by arrow e in the figure).

[0091] When the sand body generates a resistance on the spiral structure 6 from the front end of the translation slider assembly 4 to the rear end of the translation slider assembly 4 (as Figure 2When the resistance received by the spiral structure 613 is as shown by the arrow e in the figure, the resistance is transmitted to the translation mechanism 5 through the first rotating motor connecting member 601 and the translation connecting rod 503, causing the translation mechanism 5 to rotate (the angle measuring rod 504 rotates), and the translation slider assembly 501 slides on the translation slide rod assembly 4 from the front end of the translation slide rod assembly 4 to the rear end of the translation slide rod assembly 4. Combining Figure 3 , at this time, the translation slider assembly 501 has a tendency to rotate counterclockwise, and the extrusion force on the translation slide rod assembly 4 increases. By arranging a second heavy block 507 at the rear end of the translation slide rod assembly 4 and adjusting the mass of the second heavy block 507 arranged at the rear end of the translation slide rod assembly 4, the frictional force generated by the extrusion of the translation slider assembly 501 on the translation slide rod assembly 4 is offset.

[0092] In another embodiment, when the sand body generates a resistance on the spiral structure 613 from the rear end of the translation slide rod assembly 4 to the front end of the translation slide rod assembly 4 (as Figure 2 shown by the arrow f in the figure), the resistance received by the spiral structure 613 is transmitted to the translation mechanism 5 through the first rotating motor connecting member 601 and the translation connecting rod 503, causing the translation mechanism 5 to rotate (the angle measuring rod 504 rotates), and the translation slider assembly 501 slides on the translation slide rod assembly 4 from the rear end of the translation slide rod assembly 4 to the front end of the translation slide rod assembly 4. Combining Figure 4 , at this time, the translation slider assembly 501 has a tendency to rotate clockwise, and the extrusion force on the translation slide rod assembly 4 increases. By arranging a second heavy block 507 at the front end of the translation slide rod assembly 4 and adjusting the mass of the second heavy block 507 arranged at the front end of the translation slide rod assembly 4, the frictional force generated by the extrusion of the translation slider assembly 501 on the translation slide rod assembly 4 is offset.

[0093] In step S4, when the spiral structure 613 rotates and interacts with the sand body in the sand groove 1, the translation slider assembly 501 is in a state of being extruded on the translation slide rod assembly 4, resulting in an increase in frictional force. The present invention effectively reduces the frictional force of the translation slider assembly 501 on the translation slide rod assembly 4 by adjusting the mass of the second heavy block 507, thereby reducing the test error.

[0094] Step S5: The electronic speed controller 608 of the spiral drive motor measures the rotational speed and torque when the spiral structure 613 rotates; the displacement sensor 508 measures the displacement of the translation mechanism 5 on the translation slide rod assembly 4; the angle sensor 510 measures the rotation angle of the translation mechanism 5.

[0095] The translation slider assembly 501 slides on the translation slide rod assembly 4, and the displacement sensor 508 measures the displacement of the translation mechanism 5 on the translation slide rod assembly 4. The translation mechanism 5 rotates, and the angle sensor 510 measures the rotation angle of the angle measuring rod 504 of the translation mechanism 5.

[0096] Calculate the motion trajectory of the spiral structure 613 based on the displacement of the translation mechanism 5 on the translation slider assembly 4 and the rotation angle of the angle measuring rod 504 of the translation mechanism 5.

[0097] The electronic speed controller 608 of the spiral drive motor measures the rotational speed and torque when the spiral structure 613 rotates, and calculates the magnitude of the torque required for the spiral structure 613 to move under the sand.

[0098] Repeat steps S1 to S5, change the height of the adjustment support frame 3, the position of the translation slider assembly 4 on the mounting bracket 3, change the direction of the spiral structure 613 and the angle of embedding into the sand body, and measure the magnitude of the torque required for movement under the sand under different movement mode conditions.

[0099] The present invention can also change the sand body parameters and flow state through a fluidized bed device to make the sand body present different fluidization state effects, and measure the magnitude of the torque required for the spiral structure 613 to move under the sand under different sand body conditions.

[0100] The following points need to be explained:

[0101] (1) The attached drawings of the embodiments of the present invention only relate to the structures involved in the embodiments of the present invention, and other structures can refer to the general design.

[0102] (2) For clarity, in the attached drawings used to describe the embodiments of the present invention, the thickness of the layer or region is enlarged or reduced, that is, these attached drawings are not drawn according to the actual scale. It can be understood that when an element such as a layer, film, region or substrate is referred to as being "on" or "under" another element, the element can be "directly" on or under the other element or there can be an intermediate element.

[0103] (3) Without conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other to obtain new embodiments.

[0104] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. The protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. An experimental device for the coupling effect between a spiral structure and a sand body, characterized in that The test device includes: a sand tank and a support frame, and the support frame is placed above the sand tank; a set of translation slide rod assemblies are installed on the support frame, and a translation mechanism is installed on the translation slide rod assemblies in a sliding manner; Wherein, an angle sensor is installed on the translation mechanism for measuring the rotation angle of the translation mechanism, and a displacement sensor is installed on the translation slide rod assemblies for measuring the displacement of the translation mechanism on the translation slide rod assemblies; Wherein, the translation mechanism fixes a screw mechanism, and a screw structure is installed on the screw mechanism. Wherein, the screw structure is configured to rotate along a first rotation direction and along a second rotation direction; A screw drive motor electronic speed controller is installed on the screw mechanism for measuring the rotational speed and torque when the screw structure rotates; The translation mechanism includes a translation slider assembly, a balance link, a translation connecting rod and an angle measuring rod, and the translation slider assembly is sleeved on the translation slide rod assemblies in a sliding manner; The translation slider assembly includes a first end located above the translation slide rod assemblies and a second end located below the translation slide rod assemblies; One end of the balance link is provided with a first heavy object block, the other end of the balance link is hinged to one end of the translation connecting rod, the other end of the translation connecting rod is hinged to one end of the angle measuring rod, the other end of the angle measuring rod is hinged to the second end of the translation slider assembly, and the first end of the translation slider assembly is hinged to the balance link; The angle sensor is installed at the second end of the translation slider assembly; A balance base is fixed at at least one end of the translation slide rod assemblies; A pulley is installed on the balance base, a connecting rope is fixed to the first end of the translation slider assembly, and the connecting rope hangs a second heavy object block through the balance base; The displacement sensor is fixed on the balance base; The sand tank fixes a vertical rod track, and the support frame is installed on the vertical rod track; A plurality of fixing points are arranged on the vertical rod track for adjusting the position of the mounting bracket on the vertical rod track; The translation slide rod assemblies are installed on the support frame and slide relative to the support frame.

2. The test device according to claim 1, characterized in that, The screw mechanism includes a first rotation motor connecting piece and a second rotation motor connecting piece; The first rotation motor connecting piece is fixed to the translation mechanism, and the first rotation motor connecting piece is hinged to the second rotation motor connecting piece; A first rotation motor is fixed on the second rotation motor connecting piece, and the output shaft of the first rotation motor is connected to the first rotation motor connecting piece; When the first rotation motor rotates, it drives the second rotation motor connecting piece to rotate relative to the first rotation connecting piece along the first rotation direction.

3. The test device according to claim 2, wherein, The screw mechanism further includes a right-angle connecting piece, A second rotation motor is fixed on the second rotation motor connecting piece, and the output shaft of the second rotation motor is connected to the first connecting plate of the right-angle connecting piece; When the second rotation motor rotates, the right-angle connecting piece responds to the second rotation motor and rotates relative to the second rotation connecting piece along the second rotation direction; The second connecting plate of the right-angle connecting piece is fixedly provided with a screw driving motor, and the electronic speed controller of the screw driving motor is installed on the right-angle connecting piece; The screw driving motor is used for driving the screw structure to rotate.

4. The test device according to claim 3, characterized in that, A crossed roller bearing is arranged between the second rotating motor connecting plate and the right-angle connecting piece.

5. The test device according to claim 3, characterized in that, A motor synchronous pulley is fixed on the output shaft of the screw driving motor, and a screw synchronous pulley is arranged on the screw structure; A synchronous belt is installed between the motor synchronous pulley and the screw synchronous pulley, and the screw driving motor drives the screw structure to rotate through the synchronous belt.

6. The test device according to claim 5, wherein, A screw strengthening structure is installed at the end of the output shaft of the screw driving motor and rotates relative to the screw strengthening structure; The screw structure is connected with the screw strengthening structure and rotates relative to the screw strengthening structure.

7. An experimental method for the coupling effect of a spiral structure and a sand body, characterized in that The test method uses the test device described in any one of claims 1 to 6 for testing, and includes the following method steps: S1. Adjust the position of the support frame on the vertical rod track so that the support frame is at a certain height position; S2. Adjust the screw structure to rotate in the first rotation direction and the second rotation direction to determine the direction of the screw structure and the angle of embedding into the sand body; S3. Adjust the masses of the first heavy block and the second heavy block so that the translation mechanism does not slide on the translation slide rod assembly and does not rotate itself; S4. The screw structure rotates, interacts with the sand body in the sand groove, drives the translation mechanism to slide on the translation slide rod assembly, and rotates itself; S5. The electronic speed controller of the screw driving motor measures the rotational speed and torque when the screw structure rotates; the displacement sensor measures the displacement of the translation mechanism on the translation slide rod assembly; the angle sensor measures the rotation angle of the translation mechanism.

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