Extensible tunnel personnel carrier structure and method of implementing same

Abstract

The present application relates to the technical field of tunnel transportation, and discloses an extendable tunnel passenger trailer structure and an implementation method thereof, which comprises a front pulley disc, a rear driving disc, a winch, a steel strand and a passenger trailer, and is characterized in that it further comprises two pulley sets A, n pulley sets B and m pulley sets C, the pulley sets A and the pulley sets B are arranged on the same side of the steel strand, the two pulley sets A are adjacent and symmetrically arranged along the center line between the two pulley sets A, n and m are positive integers, m is greater than n, and the steel strand forms a closed ring through the front pulley disc, the pulley sets C and the rear driving disc after multiple rounds of back and forth between the pulley sets A and the pulley sets B. The extendable tunnel passenger trailer is beneficial to the continuous transportation of personnel in tunnel excavation.

Description

Technical Field

[0001] This invention relates to the field of tunnel transportation technology, specifically to an extendable tunnel passenger trailer structure and its implementation method. Background Technology

[0002] Tunnel passenger trailers are a mature technology. The main principle involves laying a continuous cable along the tunnel axis, with passenger trailers suspended from the cable. Workers can ride in the trailers to quickly traverse a section of the tunnel. Tunnel passenger trailers are frequently used in inclined tunnels and tunnel entrance sections, yielding significant benefits. In recent years, this technology has been improved; the trailers are no longer fixed to the cable, but rather the passengers are attached to the cable, making it more flexible to use.

[0003] Chinese patent document CN109677423A discloses a closed-loop overhead passenger cableway for mixed roadways in coal mines, including a drive unit, a detour wheel device, a tensioning device, a traction wire rope, a rope support device, a passenger device, a horizontal turning device, a safety protection device, and an electrical control device. The drive unit is a single unit. The traction wire rope starts from the drive unit, connects to the detour wheel device and the tensioning device through the horizontal turning device located at the intersection of transition roadway one and roadway one, and then connects to the passenger device located in roadway one through the rope support device. The wire rope then passes sequentially through the horizontal turning devices located at the intersections of transition roadway two and roadway one, and transition roadway two and roadway two, and then connects to the passenger device located in roadway two. Finally, it connects back to the drive unit through the horizontal turning device located at the intersection of transition roadway one and roadway two, thus forming a complete closed loop.

[0004] The existing technology has the following shortcomings: Since the running cable is a closed loop cable, the total length of the tunnel passenger trailer is often fixed and cannot be changed at any time. If it is to be used as an escape route in the event of mudslides or water inrushes in the tunnel, the tunnel passenger trailer needs to increase the transportation distance as the tunnel is excavated. However, the current tunnel passenger trailer technology cannot solve this problem. Summary of the Invention

[0005] To address the technical problem of how the transport distance of a tunnel-carrying trailer varies with the tunneling distance, this invention provides an extendable tunnel-carrying trailer structure, including a front pulley disc, a rear drive disc, a winch, steel strands, and a trailer. The key feature is that it further includes two pulley groups A, n pulley groups B, and m pulley groups C. Pulley groups A and B are located on the same side of the steel strands. The two pulley groups A are adjacent and symmetrically arranged along the center line between them. n and m are positive integers, with m greater than n. After the steel strands make multiple round trips between pulley groups A and B, they form a closed loop through the front pulley disc, pulley groups C, and the rear drive disc.

[0006] To facilitate the repeated back-and-forth movement of the steel strands and increase the extension distance, pulley block A includes a vertical pulley A, a horizontal pulley A, and a pulley block A fixing structure, with the pulley block A fixing structure fixed to the top of the tunnel; pulley block B includes a vertical pulley B and a pulley block B fixing structure, with the pulley block B fixing structure fixed to the top of the tunnel.

[0007] Furthermore, each of the pulley groups A has one or more vertical pulleys A and horizontal pulleys A, and the number of vertical pulleys B on each of the pulley groups B is the same as the number of vertical pulleys A on each of the pulley groups A.

[0008] Preferably, the pulley block C includes a vertical pulley C and a pulley block C fixing structure. The upper part of the pulley block C fixing structure is anchored to the top of the tunnel, and the center line of the anchoring section coincides with the center line of the steel strand on the pulley.

[0009] Preferably, the front pulley is fixed to the anchor at the top of the tunnel by a connector; the rear drive disc is fixed to the winch, the winch is fixed to the winch foundation, and the winch foundation is fixed to the top of the tunnel.

[0010] A method for implementing an extendable tunnel-carrying trailer structure includes the following steps: Step 1: Determine the number and spacing of pulley groups A and B. There are two pulley groups A. The number n of pulley groups B, the spacing of pulley groups B, and the number of pulleys are all proportional to the planned total transport length. The number m of pulley groups C and the spacing of the pulleys are also proportional to the planned total transport length. Step 2: Process the pulley block A, pulley block B, pulley block C, the fixed structure of pulley block A, the fixed structure of pulley block B, the front pulley plate, and the rear drive plate for later use; the passenger trailer is ready for use. Step 3: Drill holes in the top of the tunnel and anchor the anchor and the upper part of the pulley block C; Step 4: Install the pulley block A, pulley block B, front pulley disc, winch foundation, winch and rear drive disc using the connectors. Place the steel strand in the slots of each pulley, front pulley disc and rear drive disc as designed. Tighten the steel strand and connect the ends to form a closed loop. Step 5, Trial Run: Step 6: During structural operation, the user attaches the passenger trailer to the steel strand on which only the pulley block C runs, and sits on the passenger trailer. Step 7: When the tunnel face advances forward, remove the foremost pulley block B, move the two pulley blocks A backward, move the front pulley plate forward, add pulley blocks C at the parts that need to be extended, and keep the steel strands in a taut closed loop state. Repeat this step to extend the carrying distance of the structural system in sections.

[0011] Furthermore, in step 5, when the winch rotates forward, the steel strand moves forward; when the winch rotates in reverse, the steel strand moves backward. The passenger trailer is then attached to the steel strand on which only the pulley block C runs for a load test. The passenger trailer is moved back and forth under load, and the test is repeated until the structural system is confirmed to be able to operate safely. After this, the trial run ends.

[0012] The present invention has the following beneficial effects: 1. By using a pulley system composed of multiple rows of pulleys to store a large amount of steel strands, the traditional fixed-distance tunnel passenger trailer technology is improved, becoming a tunnel passenger trailer with an extended transport distance. This is beneficial for transporting personnel as the tunnel is being excavated, solving the shortcomings of traditional tunnel passenger trailers that can only travel a fixed distance. It expands the structure into a tunnel passenger trailer that can be extended with the advancement of the tunnel face, improving the flexibility of the traditional tunnel passenger trailer and laying the foundation for it to become an escape route in the event of mudslides or water inrushes in the tunnel.

[0013] 2. When tunnels are excavated in complex geological conditions, mudslides and water inrushes occur in the middle and lower parts of the tunnel, while the upper part of the tunnel is relatively safe. This invention makes it possible to establish a safe passage in the upper part of the tunnel.

[0014] 3. This invention has a stable structure, is easy to implement, convenient to use, and has a high degree of safety. It can be commercialized and promoted in tunnel engineering, and has a promising market prospect. Attached Figure Description

[0015] Figure 1 This is a bottom view of the extendable tunnel trailer structure in Example 1; Figure 2 for Figure 1 A frontal view diagram; Figure 3 for Figure 1 A cross-sectional schematic diagram of the middle pulley block A1-1; Figure 4 for Figure 1 Cross-sectional schematic diagram of pulley block A2-2; Figure 5 for Figure 1 Cross-sectional schematic diagram of pulley block B3-3; Figure 6 for Figure 1 Cross-sectional schematic diagram of pulley block C4-4; Figure 7 A bottom-view schematic diagram of an extendable tunnel passenger trailer structure; Figure 8 This is a bottom-view diagram of the extended tunnel manned trailer structure during its extension process. Detailed Implementation

[0016] The following detailed description illustrates the specific implementation method: 1. The reference numerals in the accompanying drawings of the instruction manual include: pulley block A1, vertical pulley A101, horizontal pulley A102, pulley block B2, vertical pulley B201, pulley block C3, vertical pulley C301, front pulley disc 4, rear drive disc 5, winch 6, steel strand 7, passenger trailer 8, tunnel top 9, tunnel face 10, pulley block A fixing structure 11, pulley block B fixing structure 12, pulley block C fixing structure 13, connector 14, anchor 15, winch foundation 16. Example 1

[0017] like Figure 1-6 As shown, an extendable tunnel passenger trailer structure includes a front pulley plate 4, a rear drive plate 5, a winch 6, steel strands 7, a passenger trailer 8, two pulley blocks A1, one pulley block B2, and three pulley blocks C3. The passenger trailer 8 is a standardized product and is hooked onto the steel strands 7 of the pulley blocks C3. The characteristic is that it can pass through the pulley blocks C3. The pulley blocks A1 and B2 are located on the same side of the steel strands 7. The two pulley blocks A1 are adjacent and symmetrically arranged along the center line between them. After the steel strands 7 make multiple back-and-forth movements between the pulley blocks A1 and B2, the steel strands 7 form a closed loop through the front pulley plate 4, pulley blocks C3, and rear drive plate 5. When the winch 6 rotates forward and backward, the drive steel strands 7 move back and forth, and the passenger trailer 8 hooked onto the steel strands 7 also moves back and forth.

[0018] The pulley block A1 includes a vertical pulley A101, a horizontal pulley A102, and a pulley block A fixing structure 11. The pulley block A1 is fixed to the anchor 15 at the tunnel top 9 via a connector 14. The pulley block B2 includes a vertical pulley B201 and a pulley block B fixing structure 12. The pulley block B fixing structure 12 is fixed to the anchor 15 at the tunnel top 9 via a connector 14. Each pulley block A1 has three vertical pulleys A101 and three horizontal pulleys A102. The number of reciprocating passes of the steel strand 7 is set according to the project requirements. The number of vertical pulleys B201 on each pulley group B2 is the same as the number of vertical pulleys A101 on each pulley group A1. Two pulley groups A1 have three vertical pulleys A101 and three horizontal pulleys A102 arranged side-by-side. One pulley group B2 has three vertical pulleys B201 arranged side-by-side. The vertical pulleys B201 are arranged in three horizontal rows with the vertical pulleys A101. The steel strand 7 passes through the front pulley plate 4 and connects sequentially to the two pulley groups A1 and B2 in the first horizontal row. 7. After winding around the pulley group B2 in the first row, it connects to the second pulley group A1 in the first horizontal row. The vertical pulley A101 and horizontal pulley A102 then change direction to the first pulley group A1 in the second horizontal row. It then sequentially connects to the two pulley groups A1 and B2 in the second horizontal row. The steel strand 7, after winding around the pulley group B2 in the second row, connects to the second pulley group A1 in the second horizontal row. The vertical pulley A101 and horizontal pulley A102 then change direction to the first pulley group A1 in the third horizontal row. (If there are more...) The vertical pulley A101, horizontal pulley A102, and vertical pulley B201 are pushed inward in sequence. The steel strand 7 is finally connected to the rear drive disc 5 through the third horizontal vertical pulley B201 and then wound back to the front pulley disc 4 to form a closed loop. The longer the tunnel, the more pulley groups B2 are prepared in the early stage, and the more vertical pulleys A101 and vertical pulleys B201 are arranged side by side. As the tunnel extends, the number of pulley groups B2 decreases to increase the length of the steel strand 7, so that the transportation distance of the tunnel-carrying trailer 8 changes with the tunneling distance.

[0019] The pulley block C3 includes a vertical pulley C301 and a pulley block C fixing structure 13. The upper part of the pulley block C fixing structure 13 is anchored to the tunnel top 9, and the center line of the anchoring section coincides with the center line of the steel strand 7 on the pulley.

[0020] The front pulley 4 is fixed to the anchor 15 on the tunnel top 9 by the connector 14; the rear drive disc 5 is fixed to the winch 6, the winch 6 is fixed to the winch foundation 16, and the winch foundation 16 is fixed to the tunnel top 9 by the anchor 15.

[0021] In the n pulley systems B2 and m pulley systems C3, n and m are determined according to the engineering requirements; for example... Figure 7 As shown, the system includes two pulley blocks A1, two pulley blocks B2, and four pulley blocks C3. When the tunnel face 10 advances forward, as... Figure 8 As shown, the foremost pulley block B2 is removed, the two pulley blocks A1 are moved backward, the front pulley plate 4 is moved forward, and pulley block C3 is added at the part that needs to be extended, while keeping the steel strand 7 in a taut closed loop state. This step is repeated to extend the carrying distance of the structural system in segments. When the number of pulley blocks B2 n=0, the increase in the carrying distance of the structural system is limited. If it is necessary to further extend the carrying distance, the total length of the closed loop steel strand 7 needs to be increased.

[0022] A method for implementing an extendable tunnel-carrying trailer structure includes the following steps: Step 1: Based on engineering and geological conditions, design the structure of the extendable tunnel passenger trailer, determine the number of pulley blocks A1 and B2, the spacing between pulley blocks, and other parameters. There are two pulley blocks A1. The number n of pulley blocks B2, the spacing between pulley blocks B2, and the number of pulleys are all proportional to the planned total transport length. The number m of pulley blocks C3 and the spacing between pulleys are also proportional to the planned total transport length. Calculate and determine the structural material strength and structural dimensions, winch traction force, anchor 15, and the upper anchorage length of pulley block C3 to improve the design of the entire structural system. Step 2: Process the pulley block A1, pulley block B2, pulley block C3, pulley block A fixing structure 11, pulley block B fixing structure 12, front pulley disc 4, and rear drive disc 5 according to the design requirements and purchase the passenger trailer 8 for later use. Step 3: Drill holes in the top 9 of the tunnel and anchor the anchor 15 and the upper part of the pulley block C3; Step 4: Install the pulley block A1, pulley block B2, front pulley plate 4, winch foundation 16, winch 6 and rear drive plate 5 using the connector 14. Place the steel strand 7 in the grooves of each pulley, the front pulley plate 4 and the rear drive plate 5 as designed. Tighten the steel strand 7 and connect the ends to form a closed loop. Step 5, Trial run: When the winch 6 rotates forward, the steel strand 7 moves forward; when the winch 6 rotates in reverse, the steel strand 7 moves backward. The personnel trailer 8 is attached to the steel strand 7 on which only the pulley block C3 is running for a load test. The personnel trailer 8 moves back and forth under load, and the test is repeated. After confirming that the structural system can operate safely, the trial run ends. Step 6: During operation, the user attaches the passenger trailer 8 to the steel strand 7 on which only the pulley block C3 operates, and sits on the passenger trailer 8; the system operates while seated on the passenger trailer 8. Figure 2As shown, the upper structure of the manned trailer 8 is shortened as an escape route. When the user sits on it, his head is close to the steel strand 7. Steps are set up at the construction site to facilitate the hanging of the manned trailer 8 on the steel strand 7. Step 7: When the tunnel face 10 advances forward, remove the foremost pulley block B2, move the two pulley blocks A1 backward, move the front pulley plate 4 forward, add pulley blocks C3 at the parts that need to be extended, and keep the steel strand 7 in a taut closed loop state. Repeat this step to extend the carrying distance of the structural system in sections. Step 8: When the number of pulley blocks B2 is reduced to n=0, the carrying distance of the structural system increases only slightly. If it is necessary to further extend the carrying distance, the total length of the closed-loop steel strand 7 needs to be increased.

[0023] The above descriptions are merely embodiments of the present invention. Commonly known structures and characteristics of the solutions are not described in detail here. Those skilled in the art are aware of all common technical knowledge in the field prior to the application date or priority date, are aware of all existing technologies in that field, and have the ability to apply conventional experimental methods prior to that date. Those skilled in the art can, under the guidance of this application, improve and implement this solution in combination with their own capabilities. Some typical known structures or methods should not be obstacles for those skilled in the art to implement this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of the present invention. These should also be considered within the scope of protection of the present invention, and will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. An extendable tunnel-carrying trailer structure, comprising a front pulley disc (4), a rear drive disc (5), a winch (6), steel strands (7), and a passenger trailer (8), characterized in that, It also includes two pulley groups A (1), n ​​pulley groups B (2), and m pulley groups C (3). The pulley groups A (1) and B (2) are located on the same side of the steel strand (7). The two pulley groups A (1) are adjacent and symmetrically arranged along the center line between the two pulley groups A (1). n and m are positive integers, with m being greater than n. After the steel strand (7) makes multiple round trips between the pulley groups A (1) and B (2), the steel strand (7) passes through the front. The pulley disc (4), pulley block C (3) and rear drive disc (5) form a closed ring; the pulley block A (1) includes a vertical pulley A (101), a horizontal pulley A (102) and a pulley block A fixing structure (11), the pulley block A fixing structure (11) is fixed to the top of the tunnel (9); the pulley block B (2) includes a vertical pulley B (201) and a pulley block B fixing structure (12), the pulley block B fixing structure (12) is fixed to the top of the tunnel (9).

2. The extendable tunnel passenger trailer structure according to claim 1, characterized in that: Each of the pulley groups A (1) has one or more vertical pulleys A (101) and horizontal pulleys A (102), and the number of vertical pulleys B (201) on each of the pulley groups B (2) is the same as the number of vertical pulleys A (101) on each of the pulley groups A (1).

3. The extendable tunnel passenger trailer structure according to claim 1 or 2, characterized in that: The pulley block C (3) includes a vertical pulley C (301) and a pulley block C fixing structure (13). The upper part of the pulley block C fixing structure (13) is anchored to the top of the tunnel (9), and the center line of the anchoring section coincides with the center line of the steel strand (7) on the pulley.

4. The extendable tunnel passenger trailer structure according to claim 3, characterized in that: The front pulley disc (4) is fixed to the anchor (15) at the top of the tunnel (9) by the connector (14); the rear drive disc (5) is fixed to the winch (6), the winch (6) is fixed to the winch foundation (16), and the winch foundation (16) is fixed to the top of the tunnel (9).

5. The implementation method of the extendable tunnel passenger trailer structure according to claim 4, characterized in that, Includes the following steps: Step 1: Determine the number and spacing of pulley group A (1) and pulley group B (2). There are two pulley groups A (1). The number n, spacing and number of pulleys of pulley group B (2) are all proportional to the total planned transport length. The number m and spacing of pulley group C (3) are also proportional to the total planned transport length. Step 2: Process the pulley block A (1), pulley block B (2), pulley block C (3), pulley block A fixing structure (11), pulley block B fixing structure (12), front pulley disc (4), and rear drive disc (5) for use; the passenger trailer (8) is ready for use. Step 3: Drill a hole at the top (9) of the tunnel and anchor the anchor (15) and the upper part of the pulley block C (3); Step 4: Install the pulley block A (1), pulley block B (2), front pulley plate (4), winch foundation (16), winch (6) and rear drive plate (5) using the connector (14). Place the steel strand (7) in the grooves of each pulley, front pulley plate (4) and rear drive plate (5) as designed. Tighten the steel strand (7) and connect the ends to form a closed loop. Step 5, Trial Run: Step 6: When the structure is running, the user hangs the passenger trailer (8) on the steel strand (7) that runs only on the pulley block C (3) and sits on the passenger trailer (8); Step 7: When the tunnel face (10) advances forward, remove the foremost pulley block B (2), move the two pulley blocks A (1) backward, move the front pulley plate (4) forward, add pulley block C (3) at the part that needs to be extended, and keep the steel strand (7) in a taut closed loop state. Repeat this step to extend the carrying distance of the structural system in segments.

6. The method for implementing the extendable tunnel passenger trailer structure according to claim 5, characterized in that: In step 5, when the winch (6) rotates forward, the steel strand (7) moves forward; when the winch (6) rotates in reverse, the steel strand (7) moves backward. The manned trailer (8) is hung on the steel strand (7) running only on the pulley block C (3) for a load test. The manned trailer (8) moves back and forth under load, and the test is repeated. After confirming that the structural system can operate safely, the test run ends.

Images