An adjustable shield propulsion guide structure

Abstract

The utility model discloses an adjustable shield propulsion guiding structure belongs to shield machine technical field, this structure includes the cutter head and propulsion assembly, still includes: protection mechanism and cleaning mechanism, the protection mechanism can with shield machine telescoping and adaptively shelter the top of propulsion hydraulic stem between front shield body and rear shield body, the cleaning mechanism is set up on the propulsion hydraulic stem, is used for scraping the dirt of pole wall in real time when its reciprocating motion. The utility model discloses through the dynamic protection and initiative cleaning design of integration, has effectively prevented the physical damage and pollution of component, has improved the operation reliability and service life of equipment significantly, and the replacement of vulnerable spare part is convenient.

Description

Technical Field

[0001] This utility model relates to the field of tunnel boring machine technology, and in particular to an adjustable tunnel boring machine propulsion guide structure. Background Technology

[0002] As an advanced engineering machine for tunnel excavation, the working principle of a tunnel boring machine relies on a powerful propulsion system to provide forward power and a guidance system to control the direction of excavation. In existing tunnel boring machines, the propulsion and guidance functions are usually accomplished by multiple sets of hydraulic cylinders, namely propulsion hydraulic rods and steering hydraulic rods, working together. During the propulsion cycle, these hydraulic rods extend to propel the entire tunnel boring machine forward.

[0003] However, in the harsh underground environment of tunnel boring machine (TBM) construction, this conventional working method exposed its inherent defects. When the hydraulic rod extends, its precision-machined metal wall is directly exposed inside the tunnel. This area is filled with dust and mud generated during construction, and debris such as gravel and concrete blocks often fall from above. If these falling hard debris hit the exposed hydraulic rod wall, they can easily cause permanent damage such as scratches and dents. When the damaged rod wall retracts, it will severely wear down the seals of the hydraulic cylinder like a file, eventually leading to hydraulic oil leakage. This not only pollutes the environment but also causes the propulsion system to fail, seriously affecting the construction progress.

[0004] Furthermore, even without direct impact from hard objects, the large amounts of dust and mud present in the construction environment adhere to the greasy surface of the hydraulic rods. When the hydraulic rods retract, these contaminants are carried into the hydraulic cylinder. These tiny, hard particles contaminate the entire hydraulic system, accelerating the wear of precision components such as pumps and valves, significantly shortening the equipment's lifespan and increasing the failure rate. Current technology lacks a structure integrated into the tunnel boring machine body that can effectively and continuously protect the reciprocating hydraulic rods.

[0005] Therefore, this utility model proposes an adjustable shield tunneling propulsion guidance structure to address the shortcomings of existing technologies. Utility Model Content

[0006] In view of the problems existing in the shield tunneling propulsion guide structure, such as exposed propulsion hydraulic rods and other transmission components, which are easily damaged by construction debris and are also easily contaminated by dust, resulting in low system reliability and shortened service life, this utility model aims to provide an adjustable shield tunneling propulsion guide structure with improved structure that can effectively solve the above problems.

[0007] This utility model provides an adjustable shield tunneling propulsion guide structure, including: a cutter head and a propulsion assembly connected to the rear side of the cutter head, the propulsion assembly including a front shield body, a rear shield body and a propulsion hydraulic rod disposed between the front shield body and the rear shield body and driving the relative movement of the two; as well as a protection mechanism and a cleaning mechanism.

[0008] The protective mechanism is used to shield the area between the front shield and the rear shield.

[0009] Furthermore, the cleaning mechanism and the propulsion hydraulic rod are combined by means of being sleeved on the propulsion hydraulic rod and used to clean its rod wall.

[0010] Preferably, the protective mechanism includes a guide frame fixed to the front shield body by a support plate and a frame; a pulley device installed on the rear shield body and slidingly engaged with the guide frame; and a steel mesh covering the propulsion hydraulic rod.

[0011] Preferably, the guide frame is provided with a limiting groove for the pulley device to roll.

[0012] Preferably, the guide frame is further provided with a guide groove for detachably installing the steel mesh; the protective mechanism also includes fixing bolts for locking the steel mesh to the guide frame.

[0013] Preferably, the propulsion assembly further includes a steering hydraulic rod, and the protective mechanism simultaneously shields the steering hydraulic rod.

[0014] Preferably, the cleaning mechanism includes a fixing ring sleeved on the wall of the propulsion hydraulic rod; and a cleaning sponge detachably connected to the fixing ring via a connecting ring, the cleaning sponge abutting against the wall of the propulsion hydraulic rod.

[0015] Preferably, the fixing ring is provided with a buckle seat, and the connecting ring is provided with a buckle head that engages or unlocks with the buckle seat.

[0016] Preferably, the inner wall of the connecting ring is provided with a locking groove, and the cleaning sponge is provided with a protrusion that mates with the locking groove.

[0017] This utility model has the following beneficial effects:

[0018] 1. This utility model solves the problem in the prior art that the propulsion components are easily damaged by falling debris during construction by setting up a protective mechanism that can adaptively extend and retract with the relative movement of the front and rear shields of the tunnel boring machine. It uses steel mesh to continuously shield the components such as the propulsion hydraulic rod. This achieves the technical effect of providing dynamic physical protection for the transmission components throughout the entire stroke and significantly improving the structural stability and operational safety of the equipment.

[0019] 2. This utility model solves the problem in the prior art that dust and dirt can easily enter the hydraulic system, cause wear on seals, and cause equipment failure by adding a cleaning mechanism to the hydraulic rod that cleans synchronously with its reciprocating motion. It uses a cleaning sponge to scrape off the construction dust attached to the wall of the hydraulic rod in real time. This achieves the technical effect of actively cleaning from the source, effectively ensuring the cleanliness of the hydraulic system, extending the service life of the equipment, and reducing maintenance costs.

[0020] 3. This utility model, by designing the steel mesh of the protective mechanism and the cleaning sponge of the cleaning mechanism as structures that can be quickly disassembled and replaced, and by cleverly cooperating with guide grooves, fixing bolts and buckles, solves the problems of complicated replacement of vulnerable parts and low maintenance efficiency in similar protective devices in the prior art, and achieves the technical effects of simplifying on-site maintenance operations, shortening equipment downtime for maintenance, and improving the overall efficiency of equipment use. Attached Figure Description

[0021] Figure 1 This is a perspective view of an adjustable shield tunneling propulsion and guidance structure proposed in this utility model;

[0022] Figure 2 This is a front view of an adjustable shield tunneling propulsion guide structure proposed in this utility model;

[0023] Figure 3 This is an exploded view of the protective mechanism of an adjustable shield tunneling propulsion guide structure proposed in this utility model;

[0024] Figure 4 This is an exploded view of the cleaning mechanism of an adjustable shield tunnel propulsion guide structure proposed in this utility model.

[0025] Legend:

[0026] 1. Cutting head; 2. Propulsion assembly; 201. Front shield body; 202. Propulsion hydraulic rod; 203. Steering hydraulic rod; 204. Rear shield body; 3. Protective mechanism; 301. Support plate; 302. Frame; 303. Guide frame; 304. Guide groove; 305. Limiting groove; 306. Pulley device; 307. Steel mesh; 308. Fixing bolt; 4. Cleaning mechanism; 401. Fixing ring; 402. Buckle seat; 403. Buckle head; 404. Connecting ring; 405. Engaging groove; 406. Cleaning sponge; 407. Protrusion. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0028] Example:

[0029] Please refer to Figures 1 to 4 This utility model provides an adjustable shield tunneling propulsion guide structure, which aims to solve the problem that components such as the propulsion hydraulic rod of existing shield machines are easily damaged by construction debris and dust.

[0030] like Figure 1 and Figure 2 As shown, the adjustable shield tunneling propulsion and guidance structure includes a cutter head 1 and a propulsion assembly 2 connected to the rear side of the cutter head 1. The cutter head 1 is used for tunneling, and the propulsion assembly 2 is used to provide propulsion and guidance power for the entire structure. The propulsion assembly 2 specifically includes a front shield body 201, a rear shield body 204, and a propulsion hydraulic rod 202 located between the front shield body 201 and the rear shield body 204 and driving the relative movement of the two.

[0031] To solve the above-mentioned technical problems, the technical solution of this embodiment is that the shield tunneling propulsion guide structure with protection and cleaning functions also includes a protection mechanism 3 and a cleaning mechanism 4, and the protection mechanism 3 and the cleaning mechanism 4 respectively form a specific structural cooperation and connection relationship with the aforementioned propulsion component 2.

[0032] Please refer to the following carefully. Figure 1 , Figure 3 and Figure 4 The structure will be described in detail below:

[0033] The protective mechanism 3 includes a support plate 301, a frame 302, a guide frame 303, a pulley device 306, a steel mesh 307, and fixing bolts 308, all fixed to the front shield 201. The support plate 301 is fixedly connected to the outer wall of the front shield 201. The frame 302 and the guide frame 303 are fixed to the front shield 201 via the support plate 301. The pulley device 306 is installed on the rear shield 204. A limiting groove 305 is provided along the length of the guide frame 303 for the pulley device 306 to roll. The pulley portion of the pulley device 306 slides within the limiting groove 305. The steel mesh 307 covers the pusher. Above the hydraulic rod 202, one end is detachably fixed to the guide frame 303 by a fixing bolt 308, and the other end is connected to the pulley device 306. The guide frame 303 is also provided with a guide groove 304 for detachably installing the steel mesh 307. This structure ensures that when the current shield body 201 and the rear shield body 204 are relatively displaced, the pulley device 306 drives the steel mesh 307 to extend and retract synchronously along the guide frame 303, thereby continuously shielding and protecting the propulsion hydraulic rod 202. At the same time, the propulsion assembly 2 also includes a steering hydraulic rod 203, and the protective mechanism 3 also shields the steering hydraulic rod 203.

[0034] The cleaning mechanism 4 is mounted on the wall of the hydraulic push rod 202. The cleaning mechanism 4 includes a fixing ring 401, a buckle seat 402, a buckle head 403, a connecting ring 404, a locking groove 405, a cleaning sponge 406, and a protrusion 407. The fixing ring 401 is slidably sleeved on the outer periphery of the hydraulic push rod 202. The cleaning sponge 406 is detachably connected to the fixing ring 401 through the connecting ring 404, and the inner surface of the cleaning sponge 406 abuts against the wall of the hydraulic push rod 202. Specifically, the fixing ring 401 is provided with a buckle seat 402, and the connecting ring 404 is provided with a buckle head 403 that engages or unlocks with the buckle seat 402 to realize quick assembly and disassembly of the connecting ring 404 and the fixing ring 401. The inner wall of the connecting ring 404 is provided with a locking groove 405, and the cleaning sponge 406 is provided with a protrusion 407 that slides with the locking groove 405 to facilitate the pull-out replacement of the cleaning sponge 406.

[0035] Based on the above embodiments, the present invention may further include the following preferred technical solutions:

[0036] As a preferred embodiment, to achieve stable extension and retraction of the protective mechanism 3 and convenient maintenance, please refer to... Figure 3The limiting groove 305 on the guide frame 303 is a long strip-shaped through groove extending along the length of the guide frame 303, which provides stable guidance for the reciprocating motion of the pulley device 306. The guide frame 303 also has a guide groove 304 parallel to the limiting groove 305. With the use of the fixing bolt 308, the steel mesh 307 can be quickly pulled out and replaced along the guide groove 304. In addition, the coverage of the protective mechanism 3 extends to the top of the steering hydraulic rod 203 of the propulsion component 2, thereby providing it with the same shielding protection.

[0037] As another preferred embodiment, in order to achieve rapid maintenance and replacement of the cleaning mechanism 4, please refer to... Figure 4 The fixing ring 401 and the connecting ring 404 are connected by a quick-release mechanism through the engagement of the buckle seat 402 and the buckle head 403. The operator can unlock the buckle head 403 by pressing the buckle seat 402, thereby quickly separating the connecting ring 404. Furthermore, the connecting ring 404 and the cleaning sponge 406 are connected by a sliding rail assembly structure through the engagement of the locking groove 405 and the protrusion 407, which allows the cleaning sponge 406 to be easily pulled out for repair or replacement.

[0038] Working Principle: During construction, the equipment primarily relies on the propulsion assembly 2 behind the cutter head 1 for propulsion and guidance. The propulsion hydraulic rod 202 and steering hydraulic rod 203 push the front shield 201, while the front shield 201 and steering hydraulic rod 203 drive the cutter head 1 forward and turn. The support plate 301 on the front shield 201 fixes the positions of the frame 302 and guide frame 303. When the propulsion assembly 2 advances the cutter head 1, the distance between the front shield 201 and the rear shield 204 decreases. At this time, the pulley device 306 on the rear shield 204 rolls along the limiting groove 305 on the guide frame 303, allowing the steel mesh 307 to move forward during the propulsion process. The location affects the normal use of the propulsion component 2. After the propulsion is completed, the propulsion hydraulic rod 202 and the steering hydraulic rod 203 are exposed in the excavated tunnel. At this time, the steel mesh 307 is just above them to prevent the debris generated during construction from damaging the internal equipment. When the steel mesh 307 has been used for a long time, it needs to be replaced. After the fixing bolt 308 is unlocked, the steel mesh 307 can be pulled along the guide groove 304 opened on the guide frame 303 to remove it. The protective mechanism 3 can protect the equipment components inside the propulsion component 2 during the construction process without affecting the normal operation of the equipment. It also replaces the steel mesh 307 to avoid its performance declining after long-term use.

[0039] When the propulsion component 2 is in operation, the steel mesh 307 above it can only block larger debris and stones. Dust is generated at the construction site and adheres to the wall of the propulsion hydraulic rod 202. Over time, this can cause malfunctions in its internal structure. The addition of a cleaning mechanism 4 can clean the wall. When the propulsion hydraulic rod 202 moves in extension and retraction, it drives the fixing ring 401 on its wall to move, and at the same time, it drives the cleaning sponge 406 inside the connecting ring 404 on the front side of the fixing ring 401 to move. At this time, the cleaning sponge 406 can clean the wall of the propulsion hydraulic rod 202. When the cleaning sponge 406 needs to be replaced or repaired, pressing the buckle seat 402 on the fixing ring 401 can unlock the buckle head 403. After removing the connecting ring 404, the cleaning sponge 406 can be pulled. The protrusion 407 on the cleaning sponge 406 will pull it out along the locking groove 405, which facilitates the replacement or repair of the cleaning sponge 406, extends the service life of the equipment, and enhances its performance.

Claims

1. An adjustable shield tunneling machine propulsion guide structure, comprising a cutterhead (1) and a propulsion assembly (2) connected to the rear side of the cutterhead (1), the propulsion assembly (2) comprising a front shield body (201), a rear shield body (204), and a propulsion hydraulic rod (202) disposed between the front shield body (201) and the rear shield body (204) and driving the relative movement of the two, characterized in that, The structure also includes a protective mechanism (3) for shielding the area between the front shield (201) and the rear shield (204), and a cleaning mechanism (4) which is mounted on the propulsion hydraulic rod (202) and used to clean its rod wall.

2. The adjustable shield tunneling propulsion guide structure according to claim 1, characterized in that, The protective mechanism (3) includes: a guide frame (303) fixed to the front shield body (201) by a support plate (301) and a frame (302), a pulley device (306) installed on the rear shield body (204) and slidingly engaged with the guide frame (303), and a steel mesh (307) covering the propulsion hydraulic rod (202).

3. The adjustable shield tunneling propulsion guide structure according to claim 2, characterized in that, The guide frame (303) is provided with a limiting groove (305) for the pulley device (306) to roll.

4. The adjustable shield tunneling propulsion guide structure according to claim 2, characterized in that, The guide frame (303) is also provided with a guide groove (304) for detachably installing the steel mesh (307), and the protective mechanism (3) also includes a fixing bolt (308) for locking the steel mesh (307) to the guide frame (303).

5. The adjustable shield tunneling propulsion guide structure according to claim 1, characterized in that, The propulsion assembly (2) also includes a steering hydraulic rod (203), and the protective mechanism (3) simultaneously shields the steering hydraulic rod (203).

6. The adjustable shield tunneling propulsion guide structure according to claim 1, characterized in that, The cleaning mechanism (4) includes: a fixing ring (401) sleeved on the wall of the propulsion hydraulic rod (202), and a cleaning sponge (406) detachably connected to the fixing ring (401) via a connecting ring (404), the cleaning sponge (406) abutting against the wall of the propulsion hydraulic rod (202).

7. An adjustable shield tunneling propulsion guidance structure according to claim 6, characterized in that, The fixing ring (401) is provided with a buckle seat (402), and the connecting ring (404) is provided with a buckle head (403) that engages or unlocks with the buckle seat (402).

8. An adjustable shield tunneling propulsion guide structure according to claim 6, characterized in that, The inner wall of the connecting ring (404) is provided with a locking groove (405), and the cleaning sponge (406) is provided with a protrusion (407) that cooperates with the locking groove (405).

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