A noose-type non-uniform annular loading device and a method of using the same

Abstract

The present invention relates to the technical field of annular loading devices, and in particular to a noose-type non-uniform annular loading device and a method for using the same. The device includes a shell, a tension mechanism, a force application point fixing mechanism, and a data detection and acquisition mechanism; the shell is connected to the force application point fixing mechanism, and the force application point fixing mechanism is connected to the tension mechanism; the tension mechanism is connected to the data detection and acquisition mechanism, and the data detection and acquisition mechanism is used to set the tension of the tension mechanism and collect the deformation size of the experimental sample; the experimental sample is arranged inside the force application point fixing mechanism, and the force application point fixing mechanism is used to fix the position of the tension mechanism, and the force application point fixing mechanism is pulled by the tension mechanism to apply pressure to the experimental sample. The present invention has the advantages of non-uniform loading, controllable load distribution, non-unique load size, more in line with actual stress conditions, and lower requirements for outer wall strength.

Description

Technical Field

[0001] The invention relates to the technical field of annular loading devices, and in particular to a noose-type non-uniform annular loading device and a use method thereof. Background Art

[0002] The external load applied by the common circumferential loading test device when testing the ultimate bearing capacity of the test specimen is an axial uniform load, which does not conform to the actual stress conditions in the project. In addition, the test object of the traditional test instrument for testing the strength of the shield segment is a single segment, and it cannot test the actual bearing capacity after being assembled into a ring. In actual projects, due to the different buried depths of tunnel linings, soft rock interlayers, complex geological conditions, and obvious distribution of soft and hard uneven strata, the forces on each part of the shield segment are not equal. Therefore, there is an urgent need for an experimental device that can simulate the actual stress conditions of the shield segment with non-uniform circumferential loading. The traditional circumferential loading device is to set up multiple jacks on the periphery of the test specimen and apply loads by pressurizing the jacks. The existing jacks can only apply axial loads, and the test results are still inaccurate. Summary of the invention

[0003] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a noose-type non-uniform annular loading device, which loads by applying tension through multiple steel wire ropes converging to the center of the test specimen, thereby changing the traditional method of applying pressure with a jack.

[0004] In order to achieve the above object, the main technical solutions adopted by the present invention include:

[0005] The present invention provides a noose-type non-uniform annular loading device, comprising a shell, a tension mechanism, a force application point fixing mechanism, and a data detection and acquisition mechanism; the shell is connected to the force application point fixing mechanism, and the force application point fixing mechanism is connected to the tension mechanism; the tension mechanism is connected to the data detection and acquisition mechanism, and the data detection and acquisition mechanism is used to set the tension of the tension mechanism and collect the deformation size of the experimental sample; the experimental sample is arranged inside the force application point fixing mechanism, and the force application point fixing mechanism is used to fix the position of the tension mechanism, and the force application point fixing mechanism is pulled by the tension mechanism to apply pressure to the experimental sample.

[0006] Furthermore, the outer shell includes an outer wall, a connecting plate, an outer cylinder, a box body and a sliding assembly; the inner diameter of the outer wall is larger than the outer diameter of the experimental sample; one end of the outer cylinder is connected to the box body, and the other end of the outer cylinder is connected to one end of the connecting plate; the other end of the connecting plate is connected to the outer wall; a sliding assembly is also provided at the other end of the outer cylinder for carrying the tension mechanism to convert the force on the circular surface of the experimental sample pointing to the center of the circle into a force perpendicular to the circular surface of the experimental sample.

[0007] Furthermore, the sliding assembly includes a pulley and a pulley clamp, one end of the pulley clamp is fixed to the other end of the outer cylinder, and the other end of the pulley clamp is rotationally connected to the pulley.

[0008] Furthermore, the pulling mechanism includes a steel wire rope, a U-shaped buckle and a hydraulic cylinder. One end of the steel wire rope passes through the force application point fixing mechanism and is fixed and locked by the U-shaped buckle. The other end of the steel wire rope is connected to the hydraulic cylinder. The hydraulic cylinder is arranged in the box body of the outer shell. The hydraulic cylinder is connected to the data detection and acquisition mechanism. The steel wire rope is pulled by the hydraulic cylinder, thereby applying pressure to the force application point fixing mechanism.

[0009] Furthermore, the force application point fixing mechanism includes a special-shaped gasket, a slide, a slide, a fixing clamp and a limit plate, the slide is arranged on one side of the outer wall of the shell; a plurality of slides are arranged in the slide, and a fixing clamp is arranged on the slide; the slide is connected to one end of the limit plate, and the limit plate is inserted into the notch on one side of the special-shaped gasket to enable the special-shaped gasket to move relative to the limit plate; the outer side of the special-shaped gasket is connected to the pulling mechanism, and the experimental specimen is arranged on the inner side of the special-shaped gasket.

[0010] Furthermore, the special-shaped gasket is in an arc shape as a whole, and a groove for connecting the tension mechanism is provided on the outer side surface of the special-shaped gasket.

[0011] Furthermore, the groove is arc-shaped, and the groove is arranged along the width direction of the special-shaped gasket.

[0012] Furthermore, the limiting plate is arranged along the center direction of the experimental sample.

[0013] Furthermore, the data detection and acquisition mechanism includes a host, a display, a manual input button and a video detector. The host is arranged in the box body of the shell, the display and the manual input button are arranged on the box body of the shell, and multiple video detectors are arranged on the outer wall of the shell. The host is respectively connected to the display, manual input button and video detector, and the host is also connected to the hydraulic cylinder of the pulling mechanism.

[0014] The present invention also provides a method for using a noose-type non-uniform annular loading device, comprising the following steps:

[0015] S1. According to the position of the force point required by the experiment, adjust the position of the slide of the force point fixing mechanism, the position of the experimental sample corresponding to the slide is the force point, and fix the position of the slide;

[0016] S2. Adjust the sliding assembly of the housing and install the sliding assembly according to the position of the slide to ensure that the centers of the sliding assembly, the slide, and the test specimen are connected to form a straight line;

[0017] S3, installing the special-shaped gaskets of the force application point fixing mechanism at the bottom and side, assembling the test specimen after the installation is completed, and then installing the special-shaped gasket at the top, the notch of the special-shaped gasket corresponds to the position of the limit plate on the slide;

[0018] S4, the steel wire rope of the tension mechanism passes through the special-shaped gasket, fixes the steel wire rope, passes through the sliding assembly, and the other end of the steel wire rope is connected to the hydraulic cylinder of the tension mechanism;

[0019] S5, inputting the tension required for each steel wire rope in the experiment through the manual input button of the data detection and collection mechanism, and starting to apply the tension;

[0020] S6. Observe and record the tension of each steel wire rope through the display of the data detection and acquisition mechanism, and observe and record the deformation of the experimental sample through the video detector of the data detection and acquisition mechanism.

[0021] The beneficial effects of the present invention are:

[0022] 1. The main machine controls the tension of each hydraulic cylinder to make the tension of each wire rope different and achieve non-uniform loading.

[0023] 2. Each steel wire rope is connected to the corresponding hydraulic cylinder. The force of the hydraulic cylinder is displayed through the display, which can display and record the tension in real time. The tension of each steel wire rope can be adjusted by manual input buttons, and the tension adjustment is more flexible and accurate.

[0024] 3. It can control the position of the force application point of each wire rope and the stress state to make it more in line with the actual project. There are more force application points for the experimental specimens, and the position of the force application points and the stress state of the experimental specimens can be adjusted more flexibly, which can be more accurately close to the actual project.

[0025] 4. The load applied to the test specimen is provided by a steel wire rope. The force on the test specimen is achieved through the tension of the steel wire rope. It is mainly the force between various parts and segments of the test specimen. The strength requirement for the external supporting structure of the test specimen is relatively low.

[0026] 5. The stress-bearing area is expanded by the special-shaped gasket, and the contact position between the wire rope and the special-shaped gasket is arc-shaped, so the stress is evenly distributed.

[0027] 6. The combination of the limit plate and the special-shaped gasket can prevent the force application point of the wire rope and the special-shaped gasket from slipping, and always keep the tension of the wire rope pointing to the center of the test specimen. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1It is a front three-dimensional structural schematic diagram of a noose-type non-uniform annular loading device of the present invention;

[0029] Figure 2 It is a schematic diagram of the rear three-dimensional structure of a noose-type non-uniform annular loading device of the present invention;

[0030] Figure 3 It is a structural schematic diagram of a pulley and a pulley card of the present invention;

[0031] Figure 4 It is a structural schematic diagram of the force application point fixing mechanism of the present invention;

[0032] Figure 5 It is a schematic structural diagram of the special-shaped gasket of the present invention.

[0033] In the figure: 1. outer shell; 11. outer wall; 12. connecting plate; 13. pulley card; 14. pulley; 15. outer cylinder; 16. box body; 2. tension mechanism; 21. wire rope; 22. U-shaped buckle; 3. force point fixing mechanism; 31. special-shaped gasket; 32. slideway; 33. slide; 34. fixing clamp; 35. limit plate; 4. data detection and acquisition mechanism; 41. host; 42. display; 43. manual input button; 44. video detector; 5. experimental sample. DETAILED DESCRIPTION

[0034] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation modes in conjunction with the accompanying drawings.

[0035] Example:

[0036] The present invention is further described below in conjunction with the accompanying drawings:

[0037] like Figure 1 and Figure 2As shown, the present invention provides a noose-type non-uniform circumferential loading device. The device includes a shell 1, a tension mechanism 2, a force application point fixing mechanism 3, and a data detection and acquisition mechanism 4. The shell 1 is connected to the force application point fixing mechanism 3, and the force application point fixing mechanism 3 is connected to the tension mechanism 2. The tension mechanism 2 is connected to the data detection and acquisition mechanism 4, and the data detection and acquisition mechanism 4 is used to set the tension of the tension mechanism 2 and collect the deformation size of the experimental sample 5. The experimental sample 5 is arranged inside the force application point fixing mechanism 3, and the force application point fixing mechanism 3 is used to fix the position of the tension mechanism 2, and the force application point fixing mechanism 3 is pulled by the tension mechanism 2, thereby applying pressure to the experimental sample 5. The shell 1 of the present invention is a rigid whole connected by rigidity. The tension mechanism 2 applies a load to the experimental sample 5 with the shell 1 as the force application point, and adjusts the tension of the hydraulic cylinder of the tension mechanism 2 through the data detection and acquisition mechanism 4, thereby adjusting the tension of the steel wire rope 21 of each tension mechanism 2 to achieve non-uniform pressurization. The force application point fixing mechanism 3 is used to adjust the position of the force applied to the experimental sample 5. The data detection and acquisition mechanism 4 is used to control the tension mechanism 2 and collect and record data. The experimental sample 5 of the present invention is a shield segment, which is a circular ring-shaped component assembled from multiple segments. The present invention has the advantages of uneven loading, controllable load distribution, non-unique load size, more in line with actual stress conditions, and lower strength requirements for the outer wall 11 of the outer shell 1.

[0038] Specifically, refer to Figure 1 and Figure 2 The housing 1 includes an outer wall 11, a connecting plate 12, an outer cylinder 15, a box 16 and a sliding assembly. Among them, the outer wall 11, the connecting plate 12, the outer cylinder 15 and the box 16 are connected to form a rigid whole with great strength. The outer wall 11 is a ring made of rigid material, and its inner diameter is larger than the outer diameter of the experimental sample 5. The outer cylinder 15 is a cylinder made of rigid material, which has a strong bearing capacity and large rigidity. The two ends of the outer cylinder 15 are respectively connected to the box 16 and the connecting plate 12. The connecting plate 12 is made of rigid material, which has a strong bearing capacity and large rigidity, and plays the role of connecting the outer cylinder 15 and the outer wall 11. One end of the outer cylinder 15 is connected to the box 16, and the other end of the outer cylinder 15 is connected to one end of the connecting plate 12, and the other end of the connecting plate 12 is connected to the outer wall 11. The other end of the outer cylinder 15 is also provided with a sliding assembly for carrying the tension mechanism 2 to convert the force on the circular surface of the experimental sample 5 pointing to the center of the circle into a force perpendicular to the circular surface of the experimental sample 5. Specifically, refer to Figure 3The sliding assembly includes a pulley 14 and a pulley clamp 13. One end of the pulley clamp 13 is detachably fixed to the other end of the outer cylinder 15 by bolts. The position of the pulley clamp 13 is adjustable and fixed to the end of the outer cylinder 15 by bolts. The other end of the pulley clamp 13 can be rotatably connected to the pulley 14 through a rotating shaft. The pulley 14 is used to cooperate with the steel wire rope 21 of the tension mechanism 2 to make the movement of the steel wire rope 21 smoother. The pulley clamp 13 is made of rigid material, has extremely strong bearing capacity and large rigidity, is connected to the pulley 14, can be freely installed at the end of the outer cylinder 15, and is fixed to the end of the outer cylinder 15 by bolts.

[0039] Specifically, refer to Figure 1 , the tension mechanism 2 includes a steel wire rope 21, a U-shaped buckle 22 and a hydraulic cylinder. The tension mechanism 2 applies a load to the experimental sample 5 with the outer shell 1 as the force application point, and controls the main machine 41 through the manual input button 43 of the data detection and acquisition mechanism 4 to adjust the tension of the hydraulic cylinder, thereby adjusting the tension of each steel wire rope 21 to achieve non-uniform pressurization. Each hydraulic cylinder is connected to a steel wire rope 21, and all hydraulic cylinders are arranged in the box 16 of the outer shell 1, and the main machine 41 is connected to each hydraulic cylinder. The tension of multiple hydraulic cylinders is controlled by the main machine 41, and the tension is displayed by the display 42. The hydraulic cylinder is connected to the steel wire rope 21 to control the size of the force at each force point. One end of the steel wire rope 21 passes through the force application point fixing mechanism 3 and is fixed and locked by the U-shaped buckle 22. The other end of the steel wire rope 21 is connected to the hydraulic cylinder. The hydraulic cylinder is arranged in the box 16 of the housing 1. The hydraulic cylinder is connected to the data detection and acquisition mechanism 4. The steel wire rope 21 is pulled by the hydraulic cylinder, and then pressure is applied to the force application point fixing mechanism 3. The steel wire rope 21 is sleeved on the force application point fixing mechanism 3 outside the experimental sample 5 and fixed by the U-shaped buckle 22. The tension of the steel wire rope 21 points to the center of the circle of the experimental sample 5. The pulley 14 of the housing 1 converts the force of the steel wire rope 21 pointing to the center of the circle of the experimental sample 5 into a horizontal tension perpendicular to the circular surface of the experimental sample 5. The present invention controls the tension of multiple hydraulic cylinders through the host 41, and each hydraulic cylinder is connected to a steel wire rope 21, thereby controlling the magnitude of the force at each force point of the steel wire rope 21.

[0040] Specifically, refer to Figure 4The force application point fixing mechanism 3 includes a special-shaped gasket 31, a slide 32, a slide 33, a fixing clamp 34 and a limit plate 35. The slide 32 is arranged on one side of the outer wall 11 of the shell 1; the slide 32 is a rigid circular track matched with the slide 33, and is fixedly connected to the outer wall 11. A plurality of slides 33 are arranged in the slide 32, and a fixing clamp 34 is arranged on the slide 33. The slide 33 is matched with the slide 32 and can slide on the slide 32. The slide 33 is fixedly connected to the limit plate 35, and a fixing clamp 34 is arranged on the slide 33 for fixing the position of the slide 33 on the slide 32. The slide 33 is connected to one end of the limit plate 35, and the limit plate 35 is inserted into the notch on one side of the special-shaped gasket 31 so that the special-shaped gasket 31 can move relative to the limit plate 35. The limit plate 35 is fixedly connected to the slide 33. The slide 33 can slide on the slideway 32 of the outer wall 11. The position of the limit plate 35 can be adjusted by sliding the slide 33. A fixing clamp 34 is provided on the slide 33. After the position of the slide 33 is adjusted, the fixing clamp 34 is used to fix it. The outer side of the special-shaped gasket 31 is connected to the steel wire rope 21 of the tension mechanism 2, and the experimental specimen 5 is arranged on the inner side of the special-shaped gasket 31. The limit plate 35 is arranged along the center direction of the experimental specimen 5. The present invention adjusts the position of the limit plate 35 by the slide 33, and then adjusts the special-shaped gasket 31 to the corresponding position, so as to meet the force distribution required by the experiment. Specifically, refer to Figure 5 The shaped gasket 31 is in an arc shape as a whole, and a groove for connecting the tension mechanism 2 is provided on the outer surface of the shaped gasket 31. The groove is in an arc shape, and the groove is provided along the width direction of the shaped gasket 31. The shaped gasket 31 is provided with an arc groove, which can make the force on the wire rope 21 more uniform. The shaped gasket 31 is provided with a notch matching the limit plate 35, which can prevent the shaped gasket 31 from sliding along the circumference of the test specimen 5 and affecting the test results.

[0041] Specifically, refer to Figure 1 , the data detection and acquisition mechanism 4 includes a host 41, a display 42, a manual input button 43 and a video detector 44. The host 41 is arranged in the box 16 of the shell 1, the display 42 and the manual input button 43 are arranged on the box 16 of the shell 1, and a plurality of video detectors 44 are arranged on the outer wall 11 of the shell 1. The plurality of video detectors 44 can be evenly arranged along the circumference of the outer wall 11. Specifically, the host 41 of the present invention is a CPU, the display 42 is a display screen, and the video detector 44 is a camera. The host 41 is respectively connected to the display 42, the manual input button 43 and the video detector 44, and the host 41 is also connected to the hydraulic cylinder of the tension mechanism 2. The host 41 receives the signal of the manual input button 43, and then controls the magnitude of the applied tension of each hydraulic cylinder, displays the magnitude of the tension through the display 42, and collects the deformation of the experimental sample 5 through the video detector 44.

[0042] The present invention improves the traditional circumferential loading device, fixes the steel wire rope 21 by the U-shaped buckle 22, and applies a force pointing to the center of the circle to the experimental sample 5. The steel wire rope 21 converts the force pointing to the center of the circle into a force perpendicular to the circular surface through the pulley 14. One end of each steel wire rope 21 is connected to each hydraulic cylinder, and the force of each hydraulic cylinder is controlled by the main machine 41, and the magnitude of the force is displayed by the display 42. The position of the force application point of each steel wire rope 21 on the experimental sample 5 and the position of the special-shaped gasket 31 can be adjusted. By adjusting the force application position of each steel wire rope 21 on the experimental sample 5 and the tension control of each steel wire rope 21 by the main machine 41, the force condition of the experimental sample 5 in the actual project is simulated, and non-uniform circumferential loading is realized.

[0043] The present invention controls the position of the force point of the experimental sample 5 by adjusting the position of the limit plate 35 and the position of the special-shaped gasket 31 through the slide 33. The limit plate 35 is meshed with the notch of the special-shaped gasket 31, which can ensure that the special-shaped gasket 31 only produces a displacement pointing to the center of the circle during the load application process, and does not produce a displacement perpendicular to the radius. The force of the wire rope 21 is all the force pointing to the center of the circle of the experimental sample 5. The tension of each hydraulic cylinder is controlled by the manual input button 43, and the hydraulic cylinder pulls the wire rope 21 to achieve different tensions of each wire rope 21. The wire rope 21 is inside the outer cylinder 15, and the wire rope 21 converts the force pointing to the center of the circle on the circular surface of the experimental sample 5 into a force perpendicular to the circular surface of the experimental sample 5 through the pulley 14. The tension of the wire rope 21 is transmitted to the experimental sample 5 through the special-shaped gasket 31. In the process of applying force, the magnitude of the tension is displayed and recorded by the display 42, and the deformation magnitude of the experimental sample 5 is recorded by the video collector.

[0044] The present invention also provides a method for using the above-mentioned noose-type non-uniform annular loading device, comprising the following steps:

[0045] S1. According to the position of the force point required by the experiment, adjust the position of the slide 33 (i.e., adjust the limit plate 35). The position of the experimental sample 5 corresponding to the slide 33 is the force point. Fix the position of the slide 33 by the fixing clamp 34.

[0046] S2. Adjust the bolts on the pulley clamp 13 and install the pulley clamp 13 according to the position of the limit plate 35. The centers of the pulley clamp 13, the slide 33 and the experimental sample 5 are connected to form a straight line.

[0047] S3, installing the special-shaped gaskets 31 at the bottom and the side, assembling the test specimen 5 after the installation is completed, and then installing the special-shaped gasket 31 at the top, the notch of the special-shaped gasket 31 corresponds to the position of the limiting plate 35.

[0048] S4, the steel wire rope 21 passes through the groove outside the special-shaped gasket 31, and the steel wire rope 21 is fixed with the U-shaped buckle 22. The other end of the steel wire rope 21 is connected to the hydraulic cylinder through the pulley 14.

[0049] S5. Input the tension required by each steel wire rope 21 in the experiment through the manual input button 43, and control each hydraulic cylinder through the host 41 to start applying the tension.

[0050] S6. Observe and record the tension of each steel wire rope 21 through the display 42, and observe and record the deformation of the experimental sample 5 through the video detector 44.

Claims

1. A noose type non-uniform annular loading device, characterized in that: The invention comprises a shell (1), a tension mechanism (2), a force application point fixing mechanism (3), and a data detection and collection mechanism (4); the shell (1) is connected to the force application point fixing mechanism (3), and the force application point fixing mechanism (3) is connected to the tension mechanism (2); the tension mechanism (2) is connected to the data detection and collection mechanism (4), and the data detection and collection mechanism (4) is used to set the tension of the tension mechanism (2) and collect the deformation size of the experimental sample (5); the experimental sample (5) is arranged inside the force application point fixing mechanism (3), and the force application point fixing mechanism (3) is used to fix the position of the tension mechanism (2), and the force application point fixing mechanism (3) is pulled by the tension mechanism (2), thereby applying pressure to the experimental sample (5); The housing (1) comprises an outer wall (11), a connecting plate (12), an outer cylinder (15), a box body (16) and a sliding assembly; the inner diameter of the outer wall (11) is larger than the outer diameter of the test sample (5); one end of the outer cylinder (15) is connected to the box body (16), and the other end of the outer cylinder (15) is connected to one end of the connecting plate (12); the other end of the connecting plate (12) is connected to the outer wall (11); the other end of the outer cylinder (15) is also provided with a sliding assembly for carrying the tension mechanism (2) so as to convert the force on the circular surface of the test sample (5) pointing to the center of the circle into a force perpendicular to the circular surface of the test sample (5); The sliding assembly comprises a pulley (14) and a pulley clamp (13), one end of the pulley clamp (13) is fixed to the other end of the outer cylinder (15), and the other end of the pulley clamp (13) is rotatably connected to the pulley (14); The pulling mechanism (2) comprises a steel wire rope (21), a U-shaped buckle (22) and a hydraulic cylinder. One end of the steel wire rope (21) passes through the force application point fixing mechanism (3) and is fixed and locked by the U-shaped buckle (22). The other end of the steel wire rope (21) is connected to the hydraulic cylinder. The hydraulic cylinder is arranged in a box (16) of the housing (1). The hydraulic cylinder is connected to the data detection and acquisition mechanism (4). The steel wire rope (21) is pulled by the hydraulic cylinder, thereby applying pressure to the force application point fixing mechanism (3). The force application point fixing mechanism (3) comprises a special-shaped gasket (31), a slideway (32), a slide (33), a fixing clamp (34) and a limit plate (35); the slideway (32) is arranged on one side of the outer wall (11) of the housing (1); a plurality of slides (33) are arranged in the slideway (32), and a fixing clamp (34) is arranged on the slide (33); the slide (33) is connected to one end of the limit plate (35), and the limit plate (35) is inserted into a notch on one side of the special-shaped gasket (31) so that the special-shaped gasket (31) moves relative to the limit plate (35); the outer side of the special-shaped gasket (31) is connected to the tension mechanism (2), and the experimental sample (5) is arranged on the inner side of the special-shaped gasket (31); The experimental specimen is a circular ring-shaped component assembled from a plurality of shield segments.

2. A noose type non-uniform annular loading device according to claim 1, characterized in that: The special-shaped gasket (31) is in an arc shape as a whole, and a groove for connecting to the pulling mechanism (2) is provided on the outer side surface of the special-shaped gasket (31).

3. A noose type non-uniform annular loading device according to claim 2, characterized in that: The groove is in an arc shape, and is arranged along the width direction of the special-shaped gasket (31).

4. The noose-type non-uniform annular loading device according to claim 1, characterized in that: The limiting plate (35) is arranged along the center direction of the experimental sample (5).

5. The noose-type non-uniform annular loading device according to claim 1, characterized in that: The data detection and acquisition mechanism (4) comprises a host (41), a display (42), a manual input button (43) and a video detector (44); the host (41) is arranged in a box (16) of the housing (1); the display (42) and the manual input button (43) are arranged on the box (16) of the housing (1); a plurality of video detectors (44) are arranged on an outer wall (11) of the housing (1); the host (41) is connected to the display (42), the manual input button (43) and the video detector (44) respectively; the host (41) is also connected to the hydraulic cylinder of the pulling mechanism (2).

6. A method for using the noose-type non-uniform annular loading device according to any one of claims 1 to 5, characterized in that: The steps include: S1. According to the position of the force point required by the experiment, the position of the slide (33) of the force point fixing mechanism (3) is adjusted. The position of the experimental sample (5) corresponding to the slide (33) is the force point. The position of the slide (33) is fixed; S2, adjusting the sliding assembly of the housing (1), installing the sliding assembly according to the position of the slide (33), and ensuring that the centers of the sliding assembly, the slide (33), and the experimental sample (5) are connected to form a straight line; S3, installing the special-shaped gaskets (31) of the force application point fixing mechanism (3) at the bottom and the side, assembling the test specimen (5) after the installation is completed, and then installing the special-shaped gasket (31) at the top, wherein the notch of the special-shaped gasket (31) corresponds to the position of the limit plate (35) on the slide (33); S4, the steel wire rope (21) of the pulling mechanism (2) passes through the special-shaped gasket (31), the steel wire rope (21) is fixed, and the steel wire rope (21) passes through the sliding assembly, and the other end is connected to the hydraulic cylinder of the pulling mechanism (2); S5, inputting the tension required for each steel wire rope (21) in the experiment through the manual input button (43) of the data detection and collection mechanism (4), and starting to apply the tension; S6. Observe and record the tension of each steel wire rope (21) through the display (42) of the data detection and acquisition mechanism (4), and observe and record the deformation of the experimental sample (5) through the video detector (44) of the data detection and acquisition mechanism (4).

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