Plugging transmission device facilitating under-pressure replacement of pressure sensor in shield tunneling machine cabin

Abstract

The utility model discloses a plugging transmission device convenient for replacing a pressure sensor in a shield machine cabin under pressure, which relates to the technical field of tunnel construction and comprises a plugging plate arranged on the front side surface of a rigid partition plate of the machine cabin and a detection through cavity arranged on the rigid partition plate of the machine cabin, a detachable fixed sleeve part is installed in the detection through cavity, a detachable pressure sensor is arranged in the fixed sleeve part, a transmission through cavity is further formed in the rigid partition plate of the engine room, a rotating shaft is installed in the transmission through cavity, and one end of the rotating shaft is connected with the end face, facing the rigid partition plate of the engine room, of the plugging plate; the other end of the rotating shaft is connected with a hydraulic driving part which is located in the machine room. According to the utility model, the hole of the pressure sensor outside the cabin is blocked, so that the maintenance in the cabin is realized, the safety risk of opening the cabin under pressure for replacement is avoided, more labor cost and material cost are saved, and the life safety of maintenance personnel is ensured.

Description

Technical Field

[0001] This utility model relates to the field of tunnel construction technology, specifically a sealing transmission device that facilitates the replacement of pressure sensors inside a tunnel boring machine chamber under pressure. Background Technology

[0002] Currently, tunnel construction primarily utilizes the shield tunneling method. Under varying geological conditions, it is crucial to monitor the pressure at the tunnel face in a timely manner to optimize tunneling parameters based on the shield machine's posture. Currently, pressure sensors within the shield machine's chamber are installed on the earth chamber partition. If a sensor malfunctions or is damaged during tunneling, it cannot be repaired or replaced inside the shield machine. In such cases, the shield machine's main control interface may fail to display pressure values ​​or display inaccurate values, making it impossible for operators to determine the true chamber pressure data and severely impacting normal tunneling operations. Utility Model Content

[0003] The purpose of this invention is to provide a sealing transmission device that facilitates the replacement of pressure sensors inside a tunnel boring machine chamber under pressure, thereby solving the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A sealing and transmission device for facilitating the replacement of pressure sensors inside a tunnel boring machine (TBM) cabin under pressure includes a sealing plate installed on the front side of a rigid partition in the cabin and a detection cavity formed in the rigid partition. A detachable fixing sleeve is installed in the detection cavity, and a detachable pressure sensor is located inside the fixing sleeve. A transmission cavity is also formed in the rigid partition, and a rotating shaft is installed inside the transmission cavity. One end of the rotating shaft extends to the front side of the rigid partition and is connected to the end face of the sealing plate facing the rigid partition. The connection between the rotating shaft and the sealing plate is located near one end of the sealing plate and on the centerline of the length direction. The other end of the rotating shaft is connected to a hydraulic drive component located inside the cabin.

[0006] Based on the above technical solutions, this utility model also provides the following optional technical solutions:

[0007] In one alternative: the four corners of the sealing plate are all chamfered at 45 degrees.

[0008] In one alternative: the end of the rotating shaft away from the sealing plate has a gear disk, the hydraulic drive component includes a hydraulic cylinder, a piston part, a piston rod and a steering switch part, the piston part is disposed inside the hydraulic cylinder, one end of the piston rod extends into the hydraulic cylinder and is connected to the piston part, and the other end has a rack part that meshes with the gear disk, and the steering switch part is connected to the hydraulic cylinder through a hydraulic conduit.

[0009] In one alternative: the sealing plate has an annular groove on its end face facing the rigid partition of the nacelle, which is directly opposite the transmission cavity, and an elastic sealing strip is installed in the annular groove.

[0010] In one alternative: a clamping plate is provided at the end of the rotating shaft away from the sealing plate, and a spring groove is provided on the end face of the clamping plate facing the rigid partition of the nacelle. A rigid spring is provided between the clamping plate and the rigid partition of the nacelle, and one end of the rigid spring is connected to the inside of the spring groove. The clamping plate has a plurality of circumferentially distributed bolt holes, and an adjusting bolt that can be threadedly connected to the rigid partition of the nacelle is installed inside the bolt holes.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] This invention enables in-chamber maintenance by sealing the external pressure sensor holes, avoiding the safety risks of opening the chamber under pressure for replacement, saving significant labor and material costs, and ensuring the safety of maintenance personnel. It allows for regular maintenance of the pressure sensors based on pressure changes on the central control interface, ensuring accurate and valid data, preventing risks during tunnel boring, and reducing maintenance labor costs. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the sealing transmission device in one embodiment of the present invention.

[0014] Figure 2 This is a schematic diagram of the sealing plate position structure in one embodiment of the present invention.

[0015] Figure 3 This is a schematic diagram of the pressure sensor mounting structure in one embodiment of the present invention.

[0016] Figure 4 This is a schematic diagram of the hydraulic drive component structure in one embodiment of the present invention.

[0017] Figure 5 This is a schematic diagram of the pressing plate structure in one embodiment of the present invention.

[0018] Figure reference numerals: rigid partition plate 100, hydraulic cylinder body 110, piston part 120, piston rod 130, directional switch part 140, hydraulic conduit 150, sealing plate 200, elastic sealing strip 210, transmission cavity 220, rotating shaft 300, detection cavity 400, fixed sleeve part 500, pressure sensor 600, rigid spring part 700, clamping plate 800, adjusting bolt part 810, spring slot part 820, bolt hole 830. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. In the drawings and description, similar or identical parts are referred to by the same reference numerals, and in practical applications, the shape, thickness, or height of each component may be enlarged or reduced. The embodiments listed in this utility model are merely illustrative and not intended to limit the scope of this utility model. Any obvious modifications or changes made to this utility model do not depart from its spirit and scope.

[0020] The left, right, up, and down positions of the various components shown in the attached diagram are just one arrangement method; the specific positions should be set according to specific needs.

[0021] In one embodiment, such as Figures 1-5 As shown, a sealing transmission device for facilitating the replacement of pressure sensors inside a tunnel boring machine (TBM) cabin under pressure includes a sealing plate 200 installed on the front side of a rigid partition 100 in the cabin and a detection cavity 400 opened on the rigid partition 100. A detachable fixing sleeve 500 is installed inside the detection cavity 400, and a detachable pressure sensor 600 is located inside the fixing sleeve 500. A transmission cavity 220 is also opened on the rigid partition 100, and a rotating shaft 300 is installed inside the transmission cavity 220. One end of the rotating shaft 300 extends to the front side of the rigid partition 100 and is connected to the end face of the sealing plate 200 facing the rigid partition 100. The connection between the rotating shaft 300 and the sealing plate 200 is located near one end of the sealing plate 200 and is located on the centerline of the length direction. The other end of the rotating shaft 300 is connected to a hydraulic drive component, which is located inside the cabin.

[0022] In this embodiment of the invention, initially, the sealing plate 200 does not cover the port of the detection cavity 400, and the port of the detection cavity 400 is open. The pressure sensor 600 inside the fixed sleeve 500 is used to sense the pressure at the working face. When the fixed sleeve 500 and the pressure sensor 600 need to be replaced, the hydraulic drive component drives the rotating shaft 300 to rotate, and the rotating shaft 300 drives the sealing plate 200 to rotate. The sealing plate 200 rotates 90 degrees and covers the port of the detection cavity 400, thereby sealing the port of the detection cavity 400. The fixed sleeve 500 and the pressure sensor 600 can be disassembled and repaired inside the machine room, realizing in-room maintenance, avoiding the safety risks of opening the machine room under pressure for replacement, and saving more labor and material costs.

[0023] In one embodiment, such as Figure 1 As shown, the four corners of the sealing plate 200 are all chamfered at 45 degrees to facilitate the removal of adhesives on the surface of the rigid partition plate 100 of the machine compartment when it is rotated.

[0024] In one embodiment, such as Figures 1-4 As shown, the end of the rotating shaft 300 away from the sealing plate 200 has a gear disk 900. The hydraulic drive component includes a hydraulic cylinder body 110, a piston part 120, a piston rod 130, and a steering switch part 140. The piston part 120 is disposed inside the hydraulic cylinder body 110. One end of the piston rod 130 extends into the hydraulic cylinder body 110 and is connected to the piston part 120, and the other end has a rack part that meshes with the gear disk 900. The steering switch part 140 is connected to the hydraulic cylinder through a hydraulic conduit 150. The body 110 is connected; in this embodiment of the utility model, the directional switch 140 controls the amount of liquid in the cavities on both sides of the piston 120, and uses the pressure difference of the liquid on both sides of the piston 120 to realize the movement of the piston 120. The moving piston 120 drives the piston rod 130 to move, and since the rack on the piston rod 130 meshes with the gear disk 900, the gear disk 900 rotates and drives the rotating shaft 300 to rotate, thereby realizing the rotation of the sealing plate 200 to seal or open the port of the detection passage cavity 400.

[0025] In one embodiment, such as Figure 1 and Figure 2 As shown, the sealing plate 200 has an annular groove on its end face facing the rigid partition 100 of the engine compartment, which is directly opposite to the transmission cavity 220, and an elastic sealing strip 210 is installed in the annular groove; in the embodiment of this utility model, the setting of the elastic sealing strip 210 can increase the sealing performance between the sealing plate 200 and the surface of the rigid partition 100 of the engine compartment.

[0026] In one embodiment, such as Figure 1 and Figure 5 As shown, a pressing plate 800 is provided at the end of the rotating shaft 300 away from the sealing plate 200, and a spring groove 820 is provided on the end face of the pressing plate 800 facing the rigid partition 100 of the cabin. A rigid spring 700 is provided between the pressing plate 800 and the rigid partition 100 of the cabin, and one end of the rigid spring 700 is connected to the inside of the spring groove 820. The pressing plate 800 has a plurality of circumferentially distributed bolt holes 830, and an adjusting bolt 810 that can be threadedly connected to the rigid partition 100 of the cabin is installed inside the bolt holes 830. In this embodiment of the present invention, the sealing plate 200 provides sealing and pressing force through the pressing plate 800 and the rigid spring 700, thereby improving the contact tightness between the sealing plate 200 and the rigid partition 100 of the cabin and strengthening the seal.

[0027] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A blocking transmission device for facilitating replacement of a pressure sensor in a shield tunneling machine chamber under pressure, comprising a blocking plate mounted on a front side of a rigid partition of the chamber and a detection cavity opened on the rigid partition of the chamber, characterized in that, The detection cavity is provided with a detachable fixing sleeve part and a detachable pressure sensor inside the fixing sleeve part.

2. The blocking transmission for facilitating the replacement of a shield machine in- tunnel pressure sensor under pressure according to claim 1, characterized in that, The four corners of the sealing plate are provided with 45-degree chamfers.

3. The blocking transmission for facilitating the replacement of a shield machine in- tunnel pressure sensor under pressure according to claim 1, characterized in that, The end of the rotating shaft away from the sealing plate is provided with a gear disc.

4. The blocking transmission for facilitating the replacement of an in-situ pressure sensor of a shield machine, according to claim 1, wherein, The end of the rotating shaft away from the sealing plate is provided with a gear disc.

5. The blocking transmission for facilitating the replacement of a shield machine in- tunnel pressure sensor under pressure according to claim 4, characterized in that, The end of the rotating shaft away from the sealing plate is provided with a gear disc. The end of the rotating shaft away from the sealing plate is provided with a gear disc.

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