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CN-224202759-U - Shield tunneling simulation test device

CN224202759UCN 224202759 UCN224202759 UCN 224202759UCN-224202759-U

Abstract

The utility model relates to the technical field of shield tunneling model tests, in particular to a shield tunneling simulation test device which comprises a frame, wherein the left side of the upper end of the frame is fixedly connected with a shell, the front side and the rear side of the upper end of the shell are fixedly connected with support columns, the outer sides of the support columns are connected with linkage plates in a sliding mode, the upper ends of the linkage plates are connected with first threaded rods in a threaded mode, the lower ends of the first threaded rods are connected with first pressing plates in a rotating mode, the lower ends of the first pressing plates are fixedly connected with sensors, the right ends of the shell are fixedly connected with a display, the inner threads of the first pressing plates are connected with second threaded rods in a threaded mode, the lower ends of the second threaded rods are connected with second pressing plates in a rotating mode, first limiting rods are arranged on the front side and the rear side of the second threaded rods, the first pressing plates are matched with the first threaded rods in a design mode, so that the first pressing plates are enabled to move downwards through rotation of the first threaded rods, drilling mediums are pressed, and tunneling working conditions of a shield tunneling machine in a high-pressure soil layer are reproduced, and the feasibility of an experiment is improved.

Inventors

  • CAI TAO
  • ZHAO YOUZHI
  • MI ZHENYUAN

Assignees

  • 中铁华铁工程设计集团有限公司

Dates

Publication Date
20260505
Application Date
20250516

Claims (7)

  1. 1. A shield tunneling simulation test device comprises a frame (1), and is characterized in that the left side of the upper end of the frame (1) is fixedly connected with a casing (2), the front side and the rear side of the upper end of the casing (2) are fixedly connected with support columns (3), the outer sides of the support columns (3) are slidably connected with a linkage plate (4), the upper end of the linkage plate (4) is in threaded connection with a first threaded rod (5), the lower end of the first threaded rod (5) is rotationally connected with a first pressing plate (6), the lower end of the first pressing plate (6) is fixedly connected with a sensor (9), the right end of the casing (2) is fixedly connected with a display (10), the inner threads of the first pressing plate (6) are connected with a second threaded rod (7), the lower end of the second threaded rod (7) is rotationally connected with a second pressing plate (8), the front side and the rear side of the second threaded rod (7) are provided with a first limit rod (11), the front side and the rear side of the lower end of the linkage plate (4) are fixedly connected with a hollow box (12), the inner part of the hollow box (12) is fixedly connected with a first spring (13), the first spring (13) is fixedly connected with a motor (13), the first spring (13) is fixedly connected with a second threaded rod (8), the right end of the first threaded rod (13) is rotationally connected with a second threaded rod (8), the shield tunneling machine simulator is characterized in that a movable plate (17) is arranged on the outer side of the propelling threaded rod (16), a second limiting rod (18) is connected inside the movable plate (17) in a sliding mode, a gear motor (19) is arranged at the right end of the movable plate (17), and a shield tunneling machine simulator (20) is arranged at the output end of the gear motor (19).
  2. 2. The shield tunneling simulation test device according to claim 1, wherein the front end and the rear end of the first pressing plate (6) are in sliding connection with the outer sides of the support columns (3), the outer sides of the first limiting rods (11) are in sliding connection with the inner parts of the first pressing plate (6), and the left end and the right end of the clamping blocks (14) are in contact with the support columns (3).
  3. 3. The shield tunneling simulation test device according to claim 1, wherein the edges of the upper end and the lower end of the linkage plate (4) are provided with through circular grooves, the diameters of the circular grooves are matched with those of the supporting columns (3), the center of the linkage plate (4) is provided with threaded holes, the diameters of the inner walls of the threaded holes are matched with those of the first threaded rods (5), and the inner walls of the threaded holes arranged at the center of the linkage plate (4) are provided with internal threads matched with the external thread intervals of the first threaded rods (5).
  4. 4. The shield tunneling simulation test device according to claim 1, wherein the lower end of the first pressing plate (6) is provided with a plurality of square grooves, and the shape and the size of the cross section of each square groove are matched with those of the cross section of the second pressing plate (8).
  5. 5. The shield tunneling simulation test device according to claim 1, wherein a square groove is formed in the right side of the upper end of the shell (2), a pushing hole is formed in the bottom of the right end of the square groove, and the diameter of the pushing hole is matched with that of a shield tunneling machine simulator (20).
  6. 6. The shield tunneling simulation test device according to claim 1, wherein an outlet (21) is formed in the lower end of the speed reducing motor (19), and a collecting box (22) is arranged at the lower end of the outlet (21).
  7. 7. The shield tunneling simulation test device according to claim 6, wherein a bayonet is arranged at the lower end of the outlet (21), and a clamping structure matched with the bayonet is arranged at the upper end of the collecting box (22).

Description

Shield tunneling simulation test device Technical Field The utility model relates to the technical field of shield tunnel model tests, in particular to a shield tunneling simulation test device. Background The shield tunneling simulation test device is an important supporting tool for shield technology development, and the technology development is directly related to the safety, efficiency and economy of tunnel engineering. The patent specification with the bulletin number of CN221053690U discloses a shield tunneling simulation test device, which comprises a simulation box body for simulating a stratum, a shield tunneling device and a reaction frame, wherein the shield tunneling device is arranged in the simulation box body and is provided with a hydraulic rod, the hydraulic rod is connected with one end of a connecting rod and used for transmitting hydraulic thrust to the reaction frame, a reaction frame front steel plate is arranged on the reaction frame, and the other end of the connecting rod is abutted with the reaction frame front steel plate and used for providing jacking thrust for the shield tunneling device. According to the utility model, the hydraulic thrust formed by the hydraulic rod is transmitted to the steel plate on the front surface of the reaction frame through the connecting rod, and the reaction force formed by the steel plate on the front surface of the reaction frame is transmitted to the hydraulic rod through the connecting rod to push the shield tunneling device, so that the jacking pressure can be continuously provided, the assembling step of the negative ring pipe piece is omitted, the experimental process is simplified, the application is simple, the application range is wide, the damage to the pipe piece caused by the direct action of the stress on the pipe piece is avoided, and the device is simple to install, disassemble and manufacture. However, in the implementation of the related technology, the shield tunneling simulation test device has the following problems that the medium in the simulation box body is drilled through the shield tunneling device to perform simulation operation, but the structure of extruding simulation pressure is lacked, so that the tunneling working condition of the shield tunneling machine in a high-pressure soil layer cannot be truly reproduced, the deviation between test data and actual construction conditions is larger, the reliability of test results is reduced, the practicability and scientific research value of the test device are weakened, and in view of the problems, the shield tunneling simulation test device is provided to overcome. Disclosure of utility model The utility model aims to solve the defects in the prior art and provides a shield tunneling simulation test device. In order to achieve the purpose, the shield tunneling simulation test device comprises a frame, wherein a shell is fixedly connected to the left side of the upper end of the frame, support columns are fixedly connected to the front side and the rear side of the upper end of the shell, a linkage plate is fixedly connected to the outer side of each support column in a sliding mode, a first threaded rod is connected to the upper end of each linkage plate in a threaded mode, a first pressing plate is rotatably connected to the lower end of each first threaded rod, a sensor is fixedly connected to the lower end of each first pressing plate, a display is fixedly connected to the right end of the shell, a second threaded rod is connected to the inner side of each first pressing plate in a threaded mode, a second pressing plate is rotatably connected to the lower end of each second threaded rod, a first limit rod is arranged on the front side and the rear side of each second threaded rod, a hollow box is fixedly connected to the front side and the rear side of each linkage plate, a first spring is fixedly connected to the inner side of each hollow box, a clamping block is fixedly connected to one end of each first spring, a pushing motor is fixedly connected to the right side of the upper end of the frame, a pushing motor is fixedly connected to the output end of each pushing motor, a moving plate is fixedly connected to a moving motor, a moving plate is arranged on the outer side of each pushing motor, a moving plate is connected to the speed reducer is connected to the right side of the driving motor, a speed reducer is connected to the driving motor is fixedly connected to the right end of the driving motor. As further description of the technical scheme, the front end and the rear end of the first pressing plate are in sliding connection with the outer sides of the supporting columns, the outer sides of the first limiting rods are in sliding connection with the inner parts of the first pressing plates, and the left end and the right end of the clamping block are in contact with the supporting columns, so that the first pressing plate can downwards squeeze the medium by ro