Vehicle shunting system for small cross-section tunnel construction

Abstract

The utility model discloses a vehicle error system of small section tunnel construction. In the traditional small section tunnel construction process, two -way traffic vehicle needs to set the error lane. The utility model discloses jacking platform is provided with hydraulic oil cylinder below, and the fixed end of hydraulic oil cylinder is connected with inverted arch filling surface, and the jacking platform is guided through the guide rail column in the jacking platform lifting process, and the jacking platform includes the fixed section of square, and the fixed section both sides are respectively connected with the climbing section of hinged connection, and the fixed section top surface four corner position of jacking platform is provided with the pulley support respectively, and the top of pulley support is connected with the fixed pulley, and the traction rope is set up in the fixed pulley surface, and the traction rope both ends are fixedly connected with the guide rail column and the climbing section respectively. The utility model realizes small section tunnel construction vehicle error, and the construction cost is low, and the construction efficiency is high, and guarantees the tunnel construction safety.

Description

Technical Field

[0001] This utility model belongs to the field of tunnel engineering construction technology, specifically relating to a vehicle passing system for small-section tunnel construction. Background Technology

[0002] There are numerous small-section tunnel projects in my country, and most tunnels are constructed using mechanized methods. Passing between vehicles in narrow spaces has become a major challenge. During the construction of traditional small-section tunnels (width < 5m), passing lanes are required for vehicles traveling in both directions. Conventional horizontal widening methods have three major drawbacks: (1) the excavation volume increases significantly, leading to a substantial increase in support costs; (2) the widened section is inconvenient to construct, delaying the overall progress; and (3) widening in geologically risky areas may induce landslides. Utility Model Content

[0003] To overcome the shortcomings of existing technologies, this utility model provides a vehicle passing system for small-section tunnel construction. It enables vehicles to pass each other in small-section tunnel construction without changing the tunnel's structural dimensions, resulting in low construction costs, high construction efficiency, and guaranteed tunnel construction safety.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A vehicle passing system for small-section tunnel construction includes a lifting platform, a hydraulic cylinder is installed below the lifting platform, and the fixed end of the hydraulic cylinder is connected to the invert arch filling surface.

[0006] The lifting platform is guided by guide rails during its lifting and lowering process.

[0007] The lifting platform includes a square fixed section, and climbing sections are hinged to both sides of the fixed section.

[0008] At the four corners of the top surface of the fixed section of the lifting platform, pulley supports are respectively installed, and fixed pulleys are connected to the top of the pulley supports; traction ropes are installed on the surface of the fixed pulleys, and the two ends of the traction ropes are fixedly connected to the guide rail column and the climbing section respectively.

[0009] Furthermore, the fixed end of the hydraulic cylinder is connected to the invert arch filling surface via a cylinder fixing flange.

[0010] Furthermore, four hydraulic cylinders are evenly distributed below the lifting platform, one each on the left, right, front, and back.

[0011] Furthermore, the guide rail column extends through the interior of the lifting platform and is slidably connected to the lifting platform. The top and bottom ends of the guide rail column are fixed to the secondary lining of the tunnel, respectively.

[0012] Furthermore, the guide rail column is positioned between two hydraulic cylinders on each side.

[0013] Furthermore, the guide rail column is arranged collinearly with the pulley support column on the same side.

[0014] Furthermore, the surface of the lifting platform is provided with anti-slip texture.

[0015] The beneficial effects of this utility model are:

[0016] 1) This utility model enables vehicles to pass each other in small-section tunnels without changing the tunnel structure dimensions by setting up a lifting platform, resulting in low construction costs, high construction efficiency, and guaranteed tunnel construction safety.

[0017] 2) The climbing section of the lifting platform of this utility model can be rotated and raised to provide upper limit protection for vehicles in the front and rear directions, thereby improving the safety of the device. Attached Figure Description

[0018] Figure 1 This is a front view of the utility model in its normal passage state;

[0019] Figure 2 This is a side view of the utility model in its normal passage state;

[0020] Figure 3 This is a front view of the vehicle passing state of this utility model;

[0021] Figure 4 This is a side view of the vehicle passing each other in the present invention.

[0022] In the diagram, 1-lifting platform, 101-fixed section, 102-climbing section, 2-hydraulic cylinder, 3-inverted arch filling surface, 4-cylinder fixing flange, 5-guide rail column, 6-pulley support column, 7-fixed pulley, 8-traction rope. Detailed Implementation

[0023] The present invention will now be described in detail with reference to specific embodiments.

[0024] This utility model is applicable to small-section tunnels such as railways, water conservancy projects, and mine roadways. It enables construction vehicles to pass each other in small-section tunnels without changing the tunnel's structural dimensions, resulting in low construction costs, high construction efficiency, and guaranteed tunnel construction safety.

[0025] like Figure 1 , 2 As shown, the vehicle passing system for small-section tunnel construction of this utility model includes a lifting platform 1. To ensure the stability of vehicle parking, the surface of the lifting platform 1 is provided with anti-slip texture.

[0026] The lifting platform 1 includes a square fixed section 101, with ramp sections 102 hinged to both sides of the fixed section 101. Under normal passage conditions, the ramp sections 102 are in a descending state, forming two slopes. A hydraulic cylinder 2 is installed below the lifting platform 1, and the fixed end of the hydraulic cylinder 2 is connected to the invert arch filling surface 3 through the cylinder fixing flange 4. In this embodiment, the hydraulic cylinder 2 is a four-stage telescopic hydraulic cylinder. Four hydraulic cylinders 2 are evenly distributed below the lifting platform 1, one each on the left, right, front, and back.

[0027] During the lifting process, the lifting platform 1 is guided by the guide rail column 5. The guide rail column 5 is set between the two hydraulic cylinders 2 on each side in the front-back direction. The guide rail column 5 runs through the interior of the lifting platform 1 and is slidably connected to the lifting platform 1. The top and bottom ends of the guide rail column 5 are fixed to the tunnel lining respectively. The guide rail column 5 is an existing structure and is connected to the lifting platform through the internal guide wheels.

[0028] At the four corners of the top surface of the fixed section 101 of the lifting platform 1, pulley support columns 6 are respectively installed, and fixed pulleys 7 are connected to the top of the pulley support columns 6; traction ropes 8 are installed on the surface of the fixed pulleys 7, and the two ends of the traction ropes 8 are fixedly connected to the guide rail column 5 and the climbing section 102 respectively. The guide rail column 5 and the pulley support column 6 on the same side are arranged collinearly.

[0029] The specific usage method of the vehicle passing system for small-section tunnel construction of this utility model is as follows:

[0030] Step 1: Under normal conditions, the hydraulic cylinder is in the retracted state, and the climbing section of the lifting platform is in the descending state. Vehicles can pass through the lifting platform normally.

[0031] Step 2: In the passing position, the vehicle with the smaller weight or size should first drive to the fixed section of the lifting platform and stop and secure itself.

[0032] Step 3: The lifting platform is gradually raised using hydraulic cylinders, and the two climbing sections at both ends are raised synchronously using fixed pulleys and traction ropes to provide sufficient space for vehicles to pass below;

[0033] Step Four: After the lifting platform reaches the designated position, the platform position is locked. The fixed section of the platform is higher than the fixing point of the traction rope on the guide rail column. The climbing section of the platform is then raised. Figure 4 As shown;

[0034] Step 5: Oncoming vehicles pass through the space beneath the lifting platform, such as... Figure 3 As shown;

[0035] Step Six: After the oncoming vehicle has passed, the hydraulic cylinder drives the lifting platform to descend, the climbing section automatically returns to its original position, and the passing system returns to its initial state, completing the passing process.

[0036] The specific construction method of the vehicle passing system for small-section tunnel construction of this utility model includes the following steps:

[0037] Step 1: Initial support, secondary lining and invert arch filling of the tunnel;

[0038] Step 2: Fix the hydraulic cylinder to the invert arch filling surface using the cylinder fixing flange;

[0039] Step 3: Secure the lifting platform to the fourth-stage cylinder;

[0040] Step 4: Fix the upper and lower ends of the guide rail column to the tunnel, and connect it to the lifting platform through the guide wheels;

[0041] Step 5: Finally, the pulley support, fixed pulley, and traction rope are fixed to the lifting platform and guide rail.

[0042] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," "join," and "fix" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0043] The content of this utility model is not limited to the embodiments listed. Any equivalent modifications made by those skilled in the art to the technical solution of this utility model after reading this utility model specification shall be covered by the claims of this utility model.

Claims

1. A vehicle passing system for small-section tunnel construction, characterized in that: It includes a lifting platform (1), and a hydraulic cylinder (2) is provided below the lifting platform (1). The fixed end of the hydraulic cylinder (2) is connected to the invert arch filling surface (3). The lifting platform (1) is guided by guide rails (5) during the lifting process; The lifting platform (1) includes a square fixed section (101), and climbing sections (102) are hinged to both sides of the fixed section (101). At the four corners of the top surface of the fixed section (101) of the lifting platform (1), pulley support columns (6) are respectively provided, and fixed pulleys (7) are connected to the top of the pulley support columns (6); traction ropes (8) are set on the surface of the fixed pulleys (7), and the two ends of the traction ropes (8) are fixedly connected to the guide rail column (5) and the climbing section (102) respectively.

2. The vehicle passing system for small-section tunnel construction according to claim 1, characterized in that: The fixed end of the hydraulic cylinder (2) is connected to the invert arch filling surface (3) through the cylinder fixing flange (4).

3. A vehicle passing system for small-section tunnel construction according to claim 2, characterized in that: Four hydraulic cylinders (2) are evenly distributed below the lifting platform (1), with one cylinder on each side, front and back.

4. A vehicle passing system for small-section tunnel construction according to claim 3, characterized in that: The guide rail column (5) runs through the inside of the lifting platform (1) and is slidably connected to the lifting platform (1). The top and bottom ends of the guide rail column (5) are fixed to the tunnel lining.

5. A vehicle passing system for small-section tunnel construction according to claim 4, characterized in that: The guide rail column (5) is positioned between the two hydraulic cylinders (2) on each side.

6. A vehicle passing system for small-section tunnel construction according to claim 5, characterized in that: The guide rail post (5) is arranged collinearly with the pulley support post (6) on the same side.

7. A vehicle passing system for small-section tunnel construction according to claim 6, characterized in that: The surface of the lifting platform (1) is provided with anti-slip texture.

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