An auxiliary device for collecting test data from a vehicle frame accompanying detection mechanism

Abstract

The utility model discloses an auxiliary device for collecting test data from a vehicle-mounted traveling detection mechanism, which relates to the fields of civil engineering, tunneling and geophysical engineering, and comprises a test simulation device, an auxiliary framework body arranged at the bottom of the test simulation device and a vehicle-mounted traveling detection mechanism; the detection mechanism comprises a ground-penetrating radar and an annular guide rail, and the ground-penetrating radar detects the pipe segment along the annular guide rail; the auxiliary framework body comprises a support assembly for fixing the detection mechanism and a drive assembly for driving the support assembly to move equidistantly along the direction of a "V"-shaped slide rail; the drive assembly is arranged in a vertical direction of the center of the support assembly, and the drive assembly comprises a hand wheel and a screw rod, and the hand wheel controls the movement of the detection mechanism by controlling the screw rod, so as to realize stable and equidistant operation of the vehicle-mounted traveling detection mechanism, realize stable data collection, and help improve data quality.

Description

Technical Field

[0001] The utility model relates to the fields of civil engineering, tunneling and geophysical engineering, and in particular to an auxiliary device for collecting test data from a vehicle frame accompanying detection mechanism. Background Art

[0002] Grouting behind the shield tunnel wall is an important means to control stratum loss and improve the stress of the pipe segment during tunnel excavation. However, since the synchronous grouting behind the wall is injected through the shield grouting pipe, the grouting process and the final form of the grouting cannot be observed intuitively due to the obstruction of structures such as the shield tail brush, shield shell and pipe segment. In order to realize the automatic detection of grouting behind the shield tunnel wall, a frame-mounted detection mechanism has been formed on the market, which can be installed on the shield tunnel. The frame-mounted detection mechanism can realize the movement of the ground penetrating radar along the circular guide rail, and then realize the detection of the circumferential local range of the shield tunnel. However, in the experiment, when the frame-mounted detection mechanism is used to detect the model, it is difficult to fix and move the frame-mounted detection mechanism, which is not conducive to the efficient development of the experiment and the stability of the collected data.

[0003] The collection of ground penetrating radar data is greatly affected by the stability of the equipment, so the collection process should be stable. Therefore, it is very important to ensure the stability of the ground penetrating radar during the test using a vehicle-mounted detection mechanism. It is very necessary to propose an auxiliary device for the vehicle-mounted detection mechanism used in model tests.

[0004] In view of this, the utility model proposes an auxiliary device for collecting test data from a vehicle frame accompanying detection mechanism. Utility Model Content

[0005] The utility model aims to provide an auxiliary device for collecting test data from a vehicle frame accompanying detection mechanism, so as to realize longitudinal equidistant movement of the vehicle frame accompanying detection mechanism and solve the shortcomings of the background technology.

[0006] According to one aspect of the utility model, there is provided an auxiliary device for collecting test data from a vehicle frame accompanying detection mechanism, comprising a test simulation device, an auxiliary framework body arranged at the bottom of the test simulation device, and a vehicle frame accompanying detection mechanism;

[0007] The detection mechanism includes a ground penetrating radar and an annular guide rail, and the ground penetrating radar detects the pipe segment along the annular guide rail;

[0008] The auxiliary structure body includes a support component for fixing the detection mechanism and a driving component for driving the support component to move equidistantly along the direction of the "V"-shaped slide rail; the driving component is arranged in the vertical direction of the center of the support component, and the driving component includes a handwheel and a screw rod, and the handwheel controls the movement of the detection mechanism by controlling the screw rod.

[0009] As a preferred technical solution of the utility model, the test simulation device includes concrete pedestals arranged on both sides, retaining baffles and pipe segments arranged on the upper part of the concrete pedestals on both sides, and grouting and filling areas are formed based on the retaining baffles and pipe segments to form a three-layer complex medium of pipe segments-slurry-soil with the same structure as the actual tunnel engineering.

[0010] As a preferred technical solution of the utility model, the lower space of the enclosure baffle and the pipe segment is the installation space for the frame accompanying detection mechanism and the auxiliary structure body.

[0011] As a preferred technical solution of the utility model, the ground penetrating radar is fixedly connected to the annular guide rail through a stepper motor, and moves along the direction of the annular guide rail based on the driving force provided by the stepper motor. A lifting mechanism is arranged between the ground penetrating radar and the stepper motor, and the height of the ground penetrating radar is adjusted by the lifting mechanism.

[0012] As a preferred technical solution of the utility model, the support assembly includes a transverse support, a longitudinal support, a triangular support and a roller. The longitudinal support is fixed at both ends of the annular guide rail, a transverse support is fixedly connected between the two longitudinal supports, and a triangular support is arranged at the bottom of the longitudinal support. The roller is connected through the triangular support, and the roller is adapted to be connected to the "V"-shaped slide rail.

[0013] As a preferred technical solution of the utility model, the "V"-shaped slide rail is welded with two front and rear steel plates to form a stable quadrilateral structure and is fixed to the ground by bolts. The "V"-shaped slide rail complements the "V"-shaped profile of the wheels on the support assembly.

[0014] As a preferred technical solution of the present utility model, the hand wheel is fixed by a hand wheel support.

[0015] As a preferred technical solution of the utility model, the screw rod passes through a hole on the handwheel support to be fixedly connected to the support assembly, and the hole is a smooth hole arranged on the top of the handwheel support.

[0016] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0017] The utility model can realize the stable and equidistant operation of the frame accompanying detection mechanism, simulate the movement of the shield machine during excavation, truly reflect the changes of the behind-the-wall grouting during the actual excavation process, accurately understand the grouting effect, and realize stable data collection, which is conducive to improving data quality, and enhancing the quality of model tests and the representativeness of their results. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0019] Figure 1 This is a front view of the auxiliary device of the utility model;

[0020] Figure 2 This is a structural schematic diagram of the vehicle frame accompanying detection mechanism of the utility model;

[0021] Figure 3 This is a side view of the structure of the vehicle frame accompanying detection mechanism of the utility model;

[0022] Figure 4 This is the principle diagram of the ground penetrating radar detection test for the back grouting of the shield tunnel wall of this utility model.

[0023] Among them: 1. Auxiliary structure body; 11. Handwheel; 12. Screw rod; 13. "V"-shaped slide rail; 14. Triangular support; 15. Handwheel support; 16. Fixing nut; 17. Roller; 18. Longitudinal support; 19. Horizontal support; 20. Hole; 2. Concrete pedestal; 3. Enclosure baffle; 4. Grouting and filling area; 5. Pipe segment; 6. Detection mechanism; 61. Ground penetrating radar; 62. Lifting mechanism; 63. Stepper motor; 64. Annular guide rail. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Example 1

[0026] like Figure 1-4 As shown, this embodiment provides an auxiliary device for collecting test data from a vehicle frame accompanying detection mechanism, comprising: a test simulation device, a vehicle frame accompanying detection mechanism 6, and an auxiliary framework body 1 arranged at the bottom of the detection mechanism 6;

[0027] The test simulation device comprises concrete caps 2 arranged on both sides, retaining baffles 3 and segments 5 arranged on the upper parts of the concrete caps 2 on both sides, and a grouting and earth filling area 4 is formed based on the retaining baffles 3 and the segments 5; wherein a grouting and earth filling area 4 which can be filled with grout and soil is arranged between the segments 5 and the retaining baffles 3, forming a three-layer complex medium of segments-grout-soil with the same structure as that of an actual tunnel project,

[0028] It should be noted that: in the shield tunnel wall rear grouting model test, the supporting frame traveling detection mechanism 6 performs stable and equidistant movement along the direction of the "V"-shaped track 13, simulating the process of the frame traveling detection mechanism 6 performing circumferential detection of the segment 5 during the actual excavation process of the shield tunnel, and performing ground penetrating radar detection on the three-layer medium of the segment-grouting body-soil body in the test, and the test results provide valuable reference for the actual project, wherein: the segment 5 is placed on the concrete pedestal 2, and the space enclosed by the wooden retaining baffle 3 on the upper part of the segment 5 is used to fill the grouting layer and the soil layer; the lower space is the installation space for the frame traveling detection mechanism 6 and the auxiliary structure body 1.

[0029] The detection mechanism 6 includes a ground penetrating radar 61 and an annular guide rail 64. The ground penetrating radar 61 detects the pipe segment 5 along the annular guide rail 64.

[0030] The vehicle-mounted detection mechanism 6 is an automated detection device. The ground penetrating radar 61 is fixedly connected to the annular guide rail 64 via a stepper motor 63. Based on the driving force provided by the stepper motor 63, it moves along the direction of the annular guide rail 64. A lifting mechanism 62 is preferably provided between the ground penetrating radar 61 and the stepper motor 63, and the height of the ground penetrating radar 61 is adjusted by the lifting mechanism 62.

[0031] It should be noted that the function of the detection mechanism 6 is to realize the smooth and automatic operation of the ground penetrating radar 61 along the guide rail, and to keep the distance between the ground penetrating radar antenna and the pipe segment constant, so as to realize the stability of data collection. The component used to support the detection mechanism 6 and realize its smooth movement on the longitudinal survey line is the auxiliary structure body 1.

[0032] The auxiliary structure body 1 includes a support assembly for fixing the detection mechanism 6 and a driving assembly for driving the support assembly to move equidistantly along the direction of the "V"-shaped slide rail 13;

[0033] The support assembly includes a transverse support 19, a longitudinal support 18, a triangular support 14 and a roller 17. The longitudinal support 18 is fixed at both ends of the annular guide rail 64. The transverse support 19 is fixedly connected between the two longitudinal supports 18. A triangular support 14 is provided at the bottom of the longitudinal support 18. The roller 17 is connected through the triangular support 14. The roller 17 is adapted to be connected to the "V"-shaped slide rail 13. The support assembly can ensure the stability of the frame accompanying detection mechanism 6 and the auxiliary device 1 and the ability to translate along the "V"-shaped track.

[0034] Among them: the "V"-shaped slide rail 13 is welded with the front and rear two steel plates to form a stable quadrilateral structure, and is fixed to the ground by bolts. The "V"-shaped slide rail 13 complements the "V"-shaped profile in the wheel on the support assembly, which can realize the movement of the trolley along the direction of the slide rail to achieve the purpose of limiting.

[0035] The driving assembly is arranged in the vertical direction of the center of the lateral support 19, and the driving assembly includes a handwheel 11 and a screw rod 12. The handwheel 11 is fixed by a handwheel support 15. The handwheel support 15 can be fixed according to the actual application scenario. The handwheel 11 is fixed based on the handwheel support 15. The handwheel 11 is connected to the screw rod 12. Turning the handwheel 11 can drive the screw rod 12 to rotate. The screw rod 12 passes through the hole 20 on the handwheel support 15 to fix the support assembly; the hole 20 is a smooth hole arranged at the top of the handwheel support 15, and is limited by two fixing nuts 16 at the hole 20, so that in the process of turning the handwheel 11, the rotation of the screw rod 12 drives the frame accompanying detection mechanism 6 and the support assembly to move along the "V"-shaped slide rail 13 to simulate the shield tunnel excavation process. By shaking the handwheel 11, the different longitudinal measurement lines of the "V"-shaped slide rail 13 are switched equidistantly. The screw rod surface has threads, and the thread width is 4mm, that is, the trolley moves forward or backward 4mm for each rotation.

[0036] The handwheel support 15 is connected to the ground by bolts and is designed in a trapezoidal shape. When it receives horizontal force, the trapezoidal structure can maintain the stability of the support, ensuring that the handwheel support does not undergo a large displacement during the force-bearing process, causing the screw to get stuck.

[0037] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. An auxiliary device for collecting test data from a vehicle frame accompanying detection mechanism, characterized in that: It comprises a test simulation device, an auxiliary frame body (1) arranged at the bottom of the test simulation device, and a vehicle frame accompanying detection mechanism (6); The detection mechanism (6) comprises a ground penetrating radar (61) and an annular guide rail (64), and the ground penetrating radar (61) detects the pipe segment (5) along the annular guide rail (64); The auxiliary structure body (1) comprises a support component for fixing the detection mechanism (6) and a drive component for driving the support component to move equidistantly along the direction of a "V"-shaped slide rail (13); the drive component is arranged in a vertical direction at the center of the support component, and the drive component comprises a hand wheel (11) and a screw rod (12); the hand wheel (11) controls the movement of the detection mechanism (6) by controlling the screw rod (12).

2. The auxiliary device for collecting test data from a vehicle frame accompanying detection mechanism according to claim 1, characterized in that: The test simulation device comprises concrete caps (2) arranged on both sides, retaining baffles (3) and pipe segments (5) arranged on the upper parts of the concrete caps (2) on both sides, and a grouting and earth filling area (4) formed based on the retaining baffles (3) and the pipe segments (5), thereby forming a three-layer complex medium of pipe segments-grouting-soil body with the same structure as that of an actual tunnel project.

3. The auxiliary device for collecting test data from a vehicle frame accompanying detection mechanism according to claim 2, characterized in that: The lower space of the enclosure baffle (3) and the pipe segment (5) is the installation space for the vehicle frame accompanying detection mechanism (6) and the auxiliary frame body (1).

4. The auxiliary device for collecting test data from a vehicle frame accompanying detection mechanism according to claim 1, characterized in that: The ground penetrating radar (61) is fixedly connected to the annular guide rail (64) via a stepper motor (63), and moves along the direction of the annular guide rail (64) based on the driving force provided by the stepper motor (63). A lifting mechanism (62) is provided between the ground penetrating radar (61) and the stepper motor (63), and the height of the ground penetrating radar (61) is adjusted by the lifting mechanism (62).

5. The auxiliary device for collecting test data from a vehicle frame accompanying detection mechanism according to claim 1, characterized in that: The support assembly comprises a transverse support (19), a longitudinal support (18), a triangular support (14) and a roller (17); the longitudinal support (18) is fixed at both ends of the annular guide rail (64); a transverse support (19) is fixedly connected between the two longitudinal supports (18); a triangular support (14) is arranged at the bottom of the longitudinal support (18); the roller (17) is connected via the triangular support (14); and the roller (17) is adapted to be connected to the "V"-shaped slide rail (13).

6. The auxiliary device for collecting test data from a vehicle frame accompanying detection mechanism according to claim 5, characterized in that: The "V"-shaped slide rail (13) is welded with the front and rear steel plates to form a stable quadrilateral structure, and is fixed to the ground surface by bolts. The "V"-shaped slide rail (13) complements the "V"-shaped profile of the wheel on the support assembly.

7. The auxiliary device for collecting test data from a vehicle frame accompanying detection mechanism according to claim 1, characterized in that: The hand wheel (11) is fixed by a hand wheel support (15).

8. The auxiliary device for collecting test data from a vehicle frame accompanying detection mechanism according to claim 1, characterized in that: The screw rod (12) passes through a hole (20) on the hand wheel support (15) to be fixedly connected to the support assembly, and the hole (20) is a smooth hole arranged on the top of the hand wheel support (15).

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