A suspended track laying device and its usage method

Abstract

This invention relates to the field of subway tunnel rail panel construction technology, and particularly to a suspended rail laying equipment and its usage method. The equipment includes a slide rail, hoisting equipment, a reversing clamp, lifting equipment, and an electromagnetic air pump. The hoisting equipment includes a fixing component and multiple sets of fixing devices spaced apart. Each set of fixing devices includes a gantry and two retraction devices. The fixing component is mounted on the slide rail, and the two retraction devices are symmetrically arranged on both sides of the gantry. The retraction axis of the retraction devices is perpendicular to the tunnel excavation axis. One end of the retraction device is fixedly connected to the fixing component, and the other end is connected to the bottom of the gantry. The reversing clamp is installed below the gantry, and the lifting equipment is located below the reversing clamp. This invention allows the rail laying equipment to be moved to the next cycle position via the slide rail for rail panel hoisting, resulting in a more advanced technology. The hoisting equipment enables rapid installation, utilizes more space inside the tunnel, avoids secondary damage to the main tunnel structure, and is beneficial for finished product protection.

Description

Technical Field

[0001] This invention relates to the field of subway tunnel rail panel construction technology, specifically a suspended rail laying device and its usage method. Background Technology

[0002] Subways have the advantages of large passenger capacity, high speed, and saving urban land, making them an indispensable mode of transportation in modern society.

[0003] Subway track laying mainly employs precast track panels and loose track laying. Loose track laying, however, suffers from low efficiency, limited space, difficulties in material transport, poor protection of finished materials, and high labor costs. Domestically and internationally, precast track panel laying often utilizes small track-laying cranes traveling on temporary tracks or employs tire-mounted track-laying machinery. Therefore, both loose track laying and small track-laying crane methods have numerous drawbacks. With the continuous expansion of subway construction in my country, traditional track laying methods are increasingly unable to adapt to the new demands of subway construction.

[0004] The installation and subsequent dismantling of temporary rails on the tunnel walls, carried out by a small crane traveling on temporary tracks, are entirely manual. This is difficult, labor-intensive, and inefficient; it is also largely wasted time and slows down the project. Installing temporary rails requires drilling into the tunnel walls, damaging the tunnel structure and potentially reducing the lifespan of prefabricated components or even creating safety hazards. The installation and dismantling of temporary rails not only increases labor costs but also material usage, raising the overall construction cost. Furthermore, the heavy weight of the tire-mounted track-laying equipment can easily damage the tunnel lining segments, negatively impacting the long-term operational safety of the subway tunnel. In addition, the rough surface of the tunnel segments causes the tire-mounted track-laying equipment to sway when transporting materials, posing a construction risk. Summary of the Invention

[0005] In view of the problems existing in the prior art, the present invention provides a suspended track laying device and its usage method, aiming to achieve rapid and safe construction of subway track laying, so as to improve work efficiency and reduce costs.

[0006] This invention is achieved through the following technical solution:

[0007] A suspended track-laying device includes a slide rail, a hoisting device, a reversing clamp, a lifting device, and an electromagnetic air pump. The slide rail is installed on the inner wall of the tunnel. The hoisting device includes a fixing component and multiple sets of fixing devices spaced apart. Each set of fixing devices includes a gantry and two retraction devices. The fixing component is installed on the slide rail, and the two retraction devices are symmetrically arranged on both sides of the gantry. The retraction axis of the retraction device is perpendicular to the excavation axis of the tunnel. One end of the retraction device is fixedly connected to the fixing component, and the other end is connected to the bottom of the gantry. The reversing clamp is installed below the gantry, and the lifting device is located below the reversing clamp. The electromagnetic air pump is installed on the surface of the fixing component. When hoisting the rail section, the electromagnetic air pump squeezes the fixing component and makes the fixing component and the slide rail fit tightly against the inner wall of the tunnel.

[0008] Preferably, it also includes longitudinal rails set along the tunnel excavation direction, with the longitudinal rails located below the reverse clamps, and the lifting equipment installed below the longitudinal rails.

[0009] Preferably, the cross-section of the slide rail is arc-shaped.

[0010] Preferably, the outer wall of the slide rail fits into the inner wall of the tunnel.

[0011] Preferably, the lifting equipment includes an electric hoist crane and a clamp-type clamp, with the electric hoist crane installed below the longitudinal rails and the clamp-type clamp installed below the electric hoist crane.

[0012] Preferably, there are two electric hoist cranes, which are symmetrically arranged along the central axis of the tunnel.

[0013] Preferably, the distance between the clamp-type fixture and the top of the tunnel is 1 / 3 to 1 / 2 of the tunnel height.

[0014] A method for using a suspended track-laying device includes the following steps:

[0015] S1, at least two hoisting cycles of slide rails are continuously arranged on the inner wall of the tunnel along the tunnel excavation direction, and hoisting equipment is installed;

[0016] S2, Install reverse clamps under the gantry;

[0017] S3, Install lifting equipment below the reverse clamp;

[0018] S4. Install the electromagnetic air pump on the fixing part and hoist the steel rail panel.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] After the hoisting equipment completes one cycle of hoisting a rail panel, the track-laying equipment can be moved to the next cycle position via a sliding rail for further rail panel hoisting, representing a more advanced technology. The hoisting equipment enables rapid installation, utilizes more space within the tunnel, avoids secondary damage to the tunnel's main structure, and facilitates the protection of finished products. The investment in developing this equipment is lower than that of conventional track-laying equipment, saving approximately 50% in investment. The equipment allows for simultaneous track laying at multiple points, effectively improving efficiency and saving construction time; compared to conventional track-laying equipment and processes, it saves approximately 30% of the construction time. It allows for easy assembly and disassembly, enabling the reuse of materials and equipment and reducing costs.

[0021] This invention reduces the pressure on the tunnel segments by incorporating fixing components, and also lowers the likelihood of swaying caused by uneven segment surfaces. Existing track-laying cranes, when traveling on temporary tracks or using tire-mounted track-laying machinery, occupy tunnel space below the lifting equipment, affecting other processes. In this invention, the rail section is lifted, creating more space below, and then moved longitudinally along the tunnel via a sliding rail, without interfering with other processes, thus improving overall efficiency and saving costs. After the lifting equipment reaches the designated position, the electromagnetic pump is activated to increase the fit between the fixing components, the sliding rail, and the tunnel segments, improving safety. After the rail section is laid, the electromagnetic pump is turned off, and the lifting equipment slides to the next designated position. Attached Figure Description

[0022] Figure 1 This is a cross-sectional schematic diagram of a suspended track-laying device according to the present invention;

[0023] Figure 2 This is a longitudinal section schematic diagram of a suspended track-laying device according to the present invention;

[0024] Figure 3 This is a three-dimensional schematic diagram of a suspended track-laying device according to the present invention.

[0025] In the diagram, 1. Tunnel inner wall; 2. Slide rail; 3. Lifting equipment; 301. Fixture; 302. Retraction device; 303. Gantry; 4. Reverse clamp; 5. Longitudinal rail; 6. Electric hoist crane; 7. Clamp clamp; 8. Electromagnetic air pump; 9. Rail panel. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to specific embodiments. These descriptions are for explanation purposes only and are not intended to limit the scope of the invention.

[0027] This invention discloses a suspended track-laying device, with reference to Figure 1 , 2It includes a slide rail 2, a hoisting device 3, a reverse clamp 4, a lifting device, an electromagnetic air pump 8, and a longitudinal steel rail 5 set along the tunnel excavation direction. The slide rail 2 is installed on the inner wall 1 of the tunnel. The cross-section of the slide rail 2 is arc-shaped, and the outer wall of the slide rail 2 is in contact with the inner wall 1 of the tunnel.

[0028] Reference Figure 3 The hoisting equipment 3 includes a fixing component 301 and multiple sets of fixing devices arranged at intervals. Each set of fixing devices includes a gantry 303 and two retraction devices 302. The fixing component 301 is set on the slide rail 2. The two retraction devices 302 are symmetrically arranged on both sides of the gantry 303. The retraction axis of the retraction device 302 is perpendicular to the excavation axis of the tunnel. One end of the retraction device 302 is fixedly connected to the fixing component 301, and the other end is connected to the bottom of the gantry 303. The reverse clamp 4 is installed below the gantry 303, and the longitudinal steel rail 5 is located below the reverse clamp 4.

[0029] The lifting equipment is located below the longitudinal rail 5 and includes an electric hoist crane 6 and a clamp-type clamp 7. The electric hoist crane 6 is installed below the longitudinal rail 5, and the clamp-type clamp 7 is installed below the electric hoist crane 6. The distance between the clamp-type clamp 7 and the tunnel ceiling is 1 / 3 to 1 / 2 of the tunnel height. There are two electric hoist cranes 6, which are symmetrically arranged along the tunnel's central axis.

[0030] The electromagnetic air pump 8 is installed on the surface of the fixing component 301. When hoisting the rail panel 9, the electromagnetic air pump 8 presses against the fixing component 301, making the fixing component 301 and the slide rail 2 fit tightly against the inner wall 1 of the tunnel. When the rail panel 9 is hoisted, there is a large space below, and it can move longitudinally along the tunnel via the slide rail 2 without affecting other processes, thereby improving overall efficiency and saving costs.

[0031] This invention also discloses a method for using a suspended track-laying device, comprising the following steps:

[0032] S1. At least two continuous lifting loop slide rails 2 are arranged on the inner wall 1 of the tunnel along the tunnel excavation direction, and lifting equipment 3 is installed. First, the slide rails 2 are installed on the inner wall 1 of the tunnel, and then the lifting equipment 3 is installed. The slide rails 2 are connected to the fixing parts 301, the fixing parts 301 are connected to the shrinking device 302 and the slide rails 2, and the shrinking device 302 is connected to the fixing parts 301 and the gantry 303. The edge distance between two adjacent fixing parts 301 is 6.20 m, the edge distance between two adjacent shrinking devices 302 is 5.80 m, and the edge distance between two adjacent gantry 303 is 8.45 m.

[0033] S2, install reverse clamp 4 below the gantry 303; that is, install reverse clamp 4 below the gantry 303, with the edge distance between adjacent reverse clamp 4 being 8.45 m, and then install longitudinal steel rail 5 below the reverse clamp 4. The longitudinal steel rail 5 is connected along the tunnel excavation direction to form a single beam frame.

[0034] S3. Lifting equipment, namely electric hoist cranes 6 and clamp-type fixtures 7, is installed below the longitudinal rails 5. Two electric hoist cranes 6 are installed below the longitudinal rails 5, each electric hoist crane 6 is symmetrically distributed on the left and right sides along the tunnel centerline, and the longitudinal distance between two adjacent electric hoist cranes 6 is 15 m. Clamp-type fixtures 7 are installed below the electric hoist cranes 6.

[0035] S4, install the electromagnetic air pump 8 on the fixing part 301 and hoist the rail panel 9. Install the electromagnetic air pump 8 on the surface of the fixing part 301, and then squeeze the fixing part 301 by the electromagnetic air pump 8. When the tunnel inner wall 1, the slide rail 2 and the fixing part 301 are tightly attached, the rail panel 9 is hoisted by the electric hoist crane 6 and the clamp 7.

[0036] This invention provides a suspended track-laying device that can be installed quickly, makes full use of tunnel conditions during use, requires less investment in equipment and personnel, and has high operational efficiency. During use, it will not cause secondary damage to the main tunnel structure, which is beneficial to the protection of finished products. The track-laying device can carry out track laying at multiple points simultaneously, effectively improving efficiency and saving construction time.

[0037] The above description is merely a preferred embodiment of the present invention and is not intended to limit the technical solution of the present invention in any way. Those skilled in the art should understand that, without departing from the spirit and principles of the present invention, the technical solution can be modified and replaced in several simple ways, and these modifications and replacements are all within the scope of protection covered by the claims.

Claims

1. A catenary track-laying apparatus, characterized in that, The device comprises a slide rail (2), a hoisting device (3), a reverse clamp (4), a lifting device and an electromagnetic air pump (8), the slide rail (2) is installed on the inner wall (1) of the tunnel, the hoisting device (3) comprises a fixing part (301) and a plurality of groups of fixing devices arranged at intervals, each group of fixing devices comprises a portal (303) and two contraction devices (302), the fixing part (301) is arranged on the slide rail (2), the two contraction devices (302) are symmetrically arranged on both sides of the portal (303), the contraction axis of the contraction device (302) is perpendicular to the excavation axis of the tunnel, one end of the contraction device (302) is fixedly connected with the fixing part (301), and the other end is connected with the bottom of the portal (303); the reverse clamp (4) is installed below the portal (303), and the lifting device is arranged below the reverse clamp (4); the electromagnetic air pump (8) is installed on the surface of the fixing part (301); when the steel rail track (9) is hoisted, the electromagnetic air pump (8) extrudes the fixing part (301), and the fixing part (301) and the slide rail (2) are tightly attached to the inner wall (1) of the tunnel.

2. The catenary track-laying apparatus according to claim 1, characterized in that The device further comprises a longitudinal steel rail (5) arranged along the tunnel excavation direction, the longitudinal steel rail (5) is located below the reverse clamp (4), and the lifting device is installed below the longitudinal steel rail (5).

3. The catenary track-laying apparatus according to claim 1, characterized in that The cross section of the slide rail (2) is arc-shaped.

4. The catenary track-laying apparatus according to claim 3, characterized in that The outer wall of the slide rail (2) is attached to the inner wall (1) of the tunnel.

5. The catenary track-laying apparatus according to claim 2, characterized in that, The lifting device comprises an electric hoist crane (6) and a clamp type clamp (7), the electric hoist crane (6) is installed below the longitudinal steel rail (5), and the clamp type clamp (7) is installed below the electric hoist crane (6).

6. The catenary track-laying apparatus according to claim 5, characterized in that The electric hoist crane (6) is provided with two, and is symmetrically arranged along the tunnel central axis.

7. The catenary track-laying apparatus according to claim 5, characterized in that The distance between the clamp type clamp (7) and the top of the tunnel is 1 / 3-1 / 2 of the height of the tunnel.

8. A method of using a catenary track-laying apparatus as claimed in any one of claims 1 to 7, characterised in that, The device comprises the following steps: S1, arranging at least two hoisting cycle slide rails (2) on the inner wall (1) of the tunnel in the tunnel excavation direction, and installing the hoisting device (3); S2, installing the reverse clamp (4) below the portal (303); S3, installing the lifting device below the reverse clamp (4); S4, installing the electromagnetic air pump (8) on the fixing part (301), and hoisting the steel rail track (9).

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