Temporary awning device for subway construction and construction method thereof

Abstract

The invention relates to the technical field of metro construction, in particular to a temporary awning device for metro construction, which comprises an awning body and a base fixed on the ground, a plurality of sliding bases are arranged at the bottoms of two sides of the awning body, a double-row guide rail is arranged on the base, and the double-row guide rail is in sliding fit with the sliding bases; an auxiliary moving mechanism is rotationally connected into the double-row guide rail, locking mechanisms are arranged below the two sides of the auxiliary moving mechanism in a matched mode, and locking mechanisms are arranged on the front portion and the rear portion of the sliding base in a matched mode. The base is further provided with a sliding rail, an inhaul cable adjusting mechanism is arranged in the sliding rail in a sliding mode, the bottom of the inhaul cable adjusting mechanism is fixedly connected with the sliding base, the top of the inhaul cable adjusting mechanism is fixedly connected with the awning body, and locking mechanisms are arranged on the inhaul cable adjusting mechanism in a front-back matched mode. Through mutual cooperation of the locking mechanism, the auxiliary moving mechanism and the inhaul cable mechanism, the awning body is more stable, and the problem that in the prior art, it is difficult to move the awning body with great effort is solved.

Description

Technical Field

[0001] This invention relates to the field of subway construction technology, and in particular to a temporary canopy device for subway construction and its construction method. Background Technology

[0002] With the large-scale development of urban subway construction, environmental protection, construction efficiency, and safety during the construction process have received increasing attention. Traditional fixed or simple canopies are insufficient to meet the complex and ever-changing site requirements of subway construction, and cannot simultaneously meet the requirements of dust and noise reduction, flexible movement, and stable support.

[0003] A search revealed Chinese patent application number 202221334074.5, which discloses a canopy device for subway construction. The device includes multiple sets of columns forming side walls. These columns are spaced apart along the length of the base, and adjacent columns are interconnected. The spacing between adjacent columns is adjustable. Each column has a pull-out arc rod at its top, forming the canopy. The width of the canopy is adjustable, and a canopy membrane covers the pull-out arc rods. The adjustable width of the canopy allows for adjustment based on actual usage, and the adjustable spacing between adjacent columns allows for adjustment of the canopy's length. This subway construction canopy device facilitates installation, ensures the canopy's strength, and allows for adjustments based on actual usage.

[0004] Although the canopy device in the prior art can achieve length and width adjustment, it cannot achieve sliding segmented installation or removal, making installation or removal more difficult, and the canopy device cannot automatically adjust to keep it in a stable state. Summary of the Invention

[0005] The existing canopy devices in the above-mentioned technologies cannot achieve sliding segmented installation or removal, making installation or removal more difficult, and the canopy devices cannot automatically adjust to maintain a stable state.

[0006] Technical approach: Starting from the problems of existing technology and combined with the actual needs of subway construction, this application provides a temporary canopy device for subway construction. By setting a segmented canopy body, it is easy to install or dismantle the canopy body in segments according to the actual situation. Furthermore, through the cooperation of the locking mechanism and the auxiliary moving mechanism, the canopy body can be moved more effortlessly. The setting of the cable adjustment mechanism can keep the canopy body in a stable state at all times, thereby improving the safety of the construction process.

[0007] To achieve the above technical concept, the technical solution adopted by this invention is as follows: This application provides a temporary canopy device for subway construction, including a canopy body and a base fixed to the ground. It further includes: a double-track guide rail and a sliding track mounted on the base; an auxiliary moving mechanism rotatably connected within the double-track guide rail; and locking mechanisms fitted on both sides below the auxiliary moving mechanism. A cable adjustment mechanism is slidably mounted within the sliding track, fixedly connected to the canopy body, and fitted with locking mechanisms at its front and rear.

[0008] Multiple sliding bases are provided on both sides of the bottom of the canopy body. The sliding bases slide in cooperation with the double-track guide rails. Locking mechanisms are provided at the front and rear of the sliding bases. A lubrication mechanism is fixedly connected to the end of the auxiliary moving mechanism. The lubrication mechanism is rotatably connected to the inner walls of both sides of the double-track guide rails. The sliding track is located on the outer side of the double-track guide rails.

[0009] Specifically, multiple sliding bases are provided on both sides of the bottom of the canopy body, and the double-row guide rail is slidably engaged with the sliding bases.

[0010] In detail, the bottom of the cable adjustment mechanism is fixedly connected to the sliding base, and the top of the cable adjustment mechanism is fixedly connected to the canopy body.

[0011] Specifically, the canopy body is composed of multiple canopies of different diameters that are interlocked, and the front and rear sides of the canopy body are provided with entrances and exits, and the top of the canopy body is provided with multiple light-transmitting windows.

[0012] It should be noted that the canopy body is an arched structure, and the canopy body is formed by segmented interlocking.

[0013] In detail, the sliding base has an inverted T-shaped structure.

[0014] In the above technical solution, the auxiliary moving mechanism includes a roller that cooperates with the sliding base, and gears are fixedly connected to both ends of the roller.

[0015] Furthermore, the locking mechanism includes a rack and pinion plate that meshes with a gear. A push rod is fixedly connected to the lower end of the rack and pinion plate, and a pull rope is fixedly connected to the outer side of the rack and pinion plate. A spring is sleeved on the pull rope, and a limit block is fixedly connected to the end of the pull rope. The limit block slides in cooperation with a limit groove formed on the base. One end of the spring is fixedly connected to the limit block, and the other end abuts against the inner wall of the limit groove.

[0016] It should be noted that the bottom end of the push rod is fixedly connected to the bottom of the double-row guide rail.

[0017] Preferably, a limit block is slidably provided on both the front and rear sides of the sliding base.

[0018] Furthermore, the lubrication mechanism includes an eccentric wheel fixedly connected to the end of the gear. The eccentric wheel is rotatably connected to the inner walls of both sides of the double-track guide rail. A piston rod is rotatably connected to the eccentric wheel. A piston plate is provided at the end of the piston rod. The piston plate is slidably connected to a lubricant storage tank located above the gear. The bottom of the lubricant storage tank has multiple drainage holes. A lubricant feeding pipe is provided on the lubricant storage tank, and the lubricant feeding pipe extends out of the top of the base.

[0019] In a further embodiment of the technical solution, the cable adjustment mechanism includes a slider slidably connected within a sliding track, a coil spring rotatably connected to the slider, a ratchet fixedly connected to the end of the coil spring, the ratchet rotatably connected to the slider, a spring plate fixedly connected to the slider, a pawl fixedly connected to the spring plate, and the pawl cooperating with the ratchet.

[0020] Furthermore, a cable is fixedly connected to the top of the coil spring, the cable is fixedly connected to the canopy body, the sliding track is connected to the adjacent double-row guide rail, and the slider is fixedly connected to the sliding base through a connecting block.

[0021] The above technical solution includes a construction method for a temporary canopy used in subway construction, comprising the following steps: S1: Lay the base and fix it with anchor bolts, then fit the canopy body onto the base; S2: The locking mechanism moves downward to release the restriction on the auxiliary moving mechanism and the sliding base, and pulls the canopy body so that the sliding base moves in and out with the cooperation of the auxiliary moving mechanism; S3: During the rotation of the auxiliary moving mechanism, the lubrication mechanism moves up and down to lubricate the auxiliary moving mechanism; S4: The canopy body is restricted during movement by a cable adjustment mechanism.

[0022] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention, through the segmented design of the canopy body, significantly reduces weight compared to traditional steel structure canopies, thereby making on-site assembly more convenient and greatly shortening construction time. Furthermore, the segmented design facilitates the segmented installation or dismantling of the canopy body, thus improving the flexibility of its application in subway construction.

[0023] 2. The present invention uses a base laid along the subway construction line to slide the canopy body into a double-track guide rail on the base, thereby facilitating the movement and fixing of the canopy body and improving the convenience of canopy body installation during construction.

[0024] 3. This invention provides a double-track guide with rollers that cooperate with the sliding base. Gears are fixedly connected to both ends of the rollers, and rack and pinion plates are meshed on the gears. A push rod is fixedly connected to the lower end of the rack and pinion plates. The push rod controls the meshing of the rack and pinion plates with the gears, thereby achieving the technical effect of locking and restricting the canopy body and avoiding the technical problem of the canopy body shifting under strong winds or vibrations.

[0025] 4. This invention controls the rack and pinion plate to engage with the gear via a push rod, thereby causing the rack and pinion plate to pull the pull rope. The pull rope then moves the limit block to release the restriction on the sliding base at the bottom of the canopy body. During the removal or installation of the canopy body, the canopy body is pulled, and with the help of the rolling rollers, the movement of the canopy body is more effortless, making it easier for construction personnel to install or remove it.

[0026] 5. This invention uses the rotation of rollers to drive the rotation of gears, which in turn drives the rotation of eccentric wheels. The rotation of the eccentric wheels causes the piston rod to move the piston plate up and down in the lubricant storage tank, thereby allowing the lubricant in the lubricant storage tank to be delivered to the gears through the leakage holes, thus lubricating the gears. On the one hand, this achieves the technical effect of maintaining the gears, and on the other hand, it makes the gears rotate more smoothly, thereby making the canopy body more labor-saving during movement.

[0027] 6. This invention utilizes precisely calculated and adjusted coil spring settings. When the cable slacks, the coil spring automatically tightens, generating torque that drives the cable to rotate around its axis, achieving an automatic tightening effect and ensuring the canopy body remains stable. The ratchet and coil spring are coaxially mounted, with a pawl engaged in the ratchet's tooth groove to prevent the cable from reversing and loosening under the spring's action, ensuring the cable is always taut and providing continuous and reliable lateral wind-resistant support for the canopy body. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a perspective view of the overall structure of the present invention; Figure 2 For the present invention Figure 1 Partial sectional view; Figure 3 This is a schematic diagram of the base structure of the present invention; Figure 4 For the present invention Figure 3 Enlarged view of section A in the middle; Figure 5 This is a schematic diagram showing the positional relationship between the double-row guide rail and the limiting block of the present invention; Figure 6 This is a schematic diagram showing the positional relationship between the sliding base and the limiting block of the present invention; Figure 7 This is a three-dimensional view of part of the structure of the present invention; Figure 8 For the present invention Figure 7 Enlarged view of section B; Figure 9 This is a schematic diagram showing the positional relationship between the roller and the limiting block of the present invention; Figure 10 This is a schematic diagram of the structural connection relationship of the present invention; Figure 11 For the present invention Figure 10 Enlarged view of section C; Figure 12 For the present invention Figure 10 Enlarged view of section D in the middle; Figure 13 This is a perspective view of the cable adjustment mechanism structure of the present invention; Figure 14 For the present invention Figure 13 Enlarged view of section E in the middle; In the diagram: 1. Canopy body; 11. Sliding base; 12. Doorway; 13. Skylight; 2. Base; 21. Double-track guide rail; 22. Sliding track; 3. Auxiliary moving mechanism; 31. Roller; 32. Gear; 4. Locking mechanism; 41. Rack and pinion plate; 42. Push rod; 43. Pull rope; 44. Spring; 45. Limit block; 5. Lubrication mechanism; 51. Eccentric wheel; 52. Piston rod; 53. Piston plate; 54. Lubricant storage tank; 55. Lubricant feeding pipe; 6. Cable adjustment mechanism; 61. Slider; 62. Coil spring; 63. Ratchet; 64. Spring; 65. Pad; 66. Cable; 67. Connecting block. Detailed Implementation

[0030] To enable those skilled in the art to better understand the technical solutions of the present invention, the technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0031] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "front end", "rear end", "inner side", "outer side", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0032] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0033] The inventors discovered during subway construction that when a certain stage of subway construction is completed and temporary canopies need to be dismantled, the existing canopies are difficult to dismantle. The dismantling process may damage the canopy itself and the surrounding construction environment, and the recycling and reuse of the dismantled parts are also quite difficult.

[0034] Based on the above findings, this application provides a temporary canopy device for subway construction, including a canopy body 1 and a base 2 fixed on the ground, and further including: a double-track guide rail 21 and a sliding track 22 disposed on the base 2, an auxiliary moving mechanism 3 rotatably connected in the double-track guide rail 21, and locking mechanisms 4 disposed on both sides below the auxiliary moving mechanism 3; a cable adjustment mechanism 6 slidably disposed in the sliding track 22, the cable adjustment mechanism 6 being fixedly connected to the canopy body 1, and locking mechanisms 4 being disposed at the front and rear of the cable adjustment mechanism 6. Example

[0035] Reference Figure 1-14 As shown, this application provides a temporary canopy device for subway construction, including a canopy body 1. Multiple sliding bases 11 are provided on both sides of the bottom of the canopy body 1. It also includes a base 2 fixed on the ground. A double-track guide rail 21 is provided on the base 2. The double-track guide rail 21 is slidably engaged with the sliding base 11.

[0036] Preferably, the canopy body 1 adopts a high-strength steel structure supporting the membrane structure, ensuring that the canopy body can withstand the harsh environmental effects such as ultraviolet rays and wind and rain erosion during long-term outdoor use, and is not prone to aging or damage. Compared with traditional steel structure canopies, the weight is significantly reduced, making on-site assembly more convenient and greatly shortening the construction time. Furthermore, the segmented design facilitates the segmented installation or dismantling of the canopy body 1, thereby improving the flexibility of its application in subway construction.

[0037] It should be noted that the base 2 is laid in advance on both sides of the planned subway construction area, and the base 2 is fixed to the ground by anchor bolts, so that the base 2 is in a stable state.

[0038] As an example, the base 2 is made of high-strength alloy steel and undergoes a special heat treatment process, with a surface hardness of HRC50-60. It has extremely strong wear resistance and pressure resistance, can withstand the weight of the canopy body 1, and is not easily deformed after long-term use.

[0039] Furthermore, each of the double-track guide rails 21 is rotatably connected to an auxiliary moving mechanism 3, and a locking mechanism 4 is provided on both sides below the auxiliary moving mechanism 3. The sliding base 11 is also provided with a locking mechanism 4 at both the front and rear.

[0040] Specifically, the auxiliary moving mechanism 3 includes a roller 31 that cooperates with the sliding base 11, and gears 32 are fixedly connected to both ends of the roller 31.

[0041] In detail, the locking mechanism 4 includes a rack and pinion plate 41 that meshes with the gear 32. A push rod 42 is fixedly connected to the lower end of the rack and pinion plate 41. A pull rope 43 is fixedly connected to the outer side of the rack and pinion plate 41. A spring 44 is sleeved on the pull rope 43. A limit block 45 is fixedly connected to the end of the pull rope 43. The limit block 45 slides in a limit groove opened on the base 2. One end of the spring 44 is fixedly connected to the limit block 45, and the other end abuts against the inner wall of the limit groove.

[0042] The push rod 42 drives the rack and pinion plate 41 to rise, so that the rack and pinion plate 41 meshes with the gear 32 and locks the rack and pinion plate 41 meshing with the gear 32. At this time, the limit block 45 restricts the sliding base 11 to move forward and backward, thereby making the sliding base 11 in a stable state, thus ensuring that the canopy body 1 is in a stable state.

[0043] When the canopy body 1 needs to be moved, the push rod 42 causes the rack and pinion plate 41 to descend, thereby releasing the rack and pinion plate 41 from the restriction of the gear 32. This allows the sliding base 11 to rotate the roller 31 during the movement. The rotation of the roller 31 can assist the sliding base 11 to move more easily and quickly, thus making the canopy body 1 easier and faster to move during installation or removal.

[0044] More specifically, during the descent, the rack and pinion plate 41 pulls the pull rope 43, which in turn pulls the limit block 45 to move. At this time, the spring 44 is in a compressed state, and the movement of the limit block 45 releases the restriction on the sliding base 11, thereby facilitating the sliding base 11 to slide on the roller 31, and finally realizing the movement of the canopy body 1.

[0045] In the above technical solution, a sliding track 22 is also provided on the base 2. The sliding track 22 is located outside the double-track guide rail 21. A cable adjustment mechanism 6 is slidably arranged in the sliding track 22. The bottom of the cable adjustment mechanism 6 is fixedly connected to the sliding base 11, and the top of the cable adjustment mechanism 6 is fixedly connected to the canopy body 1. A locking mechanism 4 is provided in the front and rear of the cable adjustment mechanism 6.

[0046] Furthermore, the cable adjustment mechanism 6 includes a slider 61 slidably connected within the sliding track 22, a coil spring 62 rotatably connected to the slider 61, a ratchet 63 fixedly connected to the end of the coil spring 62, the ratchet 63 rotatably connected to the slider 61, a spring piece 64 fixedly connected to the slider 61, a pawl 65 fixedly connected to the spring piece 64, and the pawl 65 cooperating with the ratchet 63.

[0047] Furthermore, a cable 66 is fixedly connected to the top of the coil spring 62, the cable 66 is fixedly connected to the canopy body 1, the sliding track 22 is connected to the adjacent double-row guide rail 21, and the slider 61 is fixedly connected to the sliding base 11 through a connecting block 67.

[0048] The installation of cable 66 achieves the technical effect of traction and fixation for the canopy body 1. When the canopy body 1 is in the construction state, if cable 66 is slack, the coil spring 62 automatically tightens, and the resulting torque drives cable 66 to rotate around the axis, achieving the technical effect of automatic tightening and keeping the canopy body 1 in a stable state. Ratchet 63 is coaxially installed with coil spring 62, and pawl 65 is engaged in the tooth groove of ratchet 63 to prevent cable 66 from reversing and loosening under the action of coil spring 62, ensuring that cable 66 is always in a taut state and providing continuous and reliable lateral wind-resistant support for the canopy body 1.

[0049] Preferably, the cable 66 is made of high-strength steel wire rope with a diameter of 10mm-20mm and a breaking strength greater than 100KN, which can effectively resist the pulling of strong winds on the canopy body 1.

[0050] During the movement of the canopy body 1, the sliding base 11 can drive the slider 61 to move synchronously through the connection block 67 between the slider 61 and the sliding base 11, thereby enabling the canopy body 1 to be fixed in different positions and improving the practicality of the device. Example

[0051] Based on Example 1, referring to Figure 7-8 As shown, in order to make the auxiliary moving mechanism 3 rotate more smoothly and without jamming, a lubrication mechanism 5 is fixedly connected to the end of the auxiliary moving mechanism 3. The lubrication mechanism 5 is rotatably connected to the inner walls on both sides of the double-track guide rail 21.

[0052] Specifically, the lubrication mechanism 5 includes an eccentric wheel 51 fixedly connected to the end of the gear 32. The eccentric wheel 51 is rotatably connected to the inner walls of both sides of the double-track guide rail 21. A piston rod 52 is rotatably connected to the eccentric wheel 51. A piston plate 53 is provided at the end of the piston rod 52. The piston plate 53 is slidably connected to a lubricant storage tank 54 located above the gear 32. The bottom of the lubricant storage tank 54 has multiple drainage holes. A lubricant feeding pipe 55 is provided on the lubricant storage tank 54. The lubricant feeding pipe 55 extends out of the top of the base 2.

[0053] The rotation of roller 31 and gear 32 drives the eccentric wheel 51 to rotate. During the rotation of the eccentric wheel 51, the piston rod 52 moves up and down, which in turn drives the piston plate 53 to slide up and down in the lubricant storage tank 54. This allows the lubricant in the lubricant storage tank 54 to be delivered to the gear 32 through the leakage hole, making the gear 32 rotate more smoothly and achieving the technical effect of maintenance.

[0054] Specific application examples The following describes the specific application of a temporary canopy device for subway construction in the subway construction project of Section 04 of Line 1 branch line from Yungang Station to Houlucun Station, in conjunction with Embodiment 1 and Embodiment 2.

[0055] The ventilation shaft between Yungang Station and Houlucun Station is located north of the intersection of Taiziyu Road and Xinzhuang South Road, with its ground-level components situated within a park in the northwest quadrant. To the east of the ventilation shaft is the Zhujiang Yujing residential complex, with a minimum distance of 18.21 meters between the shaft and its buildings. To the south is the Zhangjiafen Beili residential complex, with a minimum distance of 37.88 meters between its buildings and the complex.

[0056] The ventilation shaft serves as the launching shaft for the tunnel boring machine (TBM). TBM tunneling will commence after the structural construction of the ventilation shaft is completed. Since TBM tunneling is a 24-hour continuous operation, nighttime construction will cause significant disturbance to the surrounding environment and residents.

[0057] To minimize construction noise and disturbance to residents, the project team decided to use a steel structure membrane canopy to fully enclose the shield tunneling area during the tunneling process.

[0058] In the specific construction process, firstly, the base 2 is laid in advance on both sides of the planned subway construction area. The base 2 is fixed to the ground with anchor bolts to make the base 2 stable.

[0059] Secondly, the canopy body 1 is constructed to form an arched support structure, and the sliding base 11 at the bottom of the canopy body 1 is installed in the double-row guide rail 21 opened on the base 2, and the canopy body 1 is fixed by the cable 66.

[0060] The overall laying process begins. By controlling the push rod 42 to drive the rack and pinion plate 41 to descend, the rack and pinion plate 41 is released from the restriction on the gear 32. This allows the sliding base 11 to rotate the roller 31 during its movement. The rotation of the roller 31 helps the sliding base 11 to move more easily and quickly, making the canopy body 1 easier and faster to lay or dismantle during the process.

[0061] During the descent, the rack and pinion plate 41 pulls the pull rope 43, which in turn pulls the limit block 45 to move. At this time, the spring 44 is in a compressed state, and the movement of the limit block 45 releases the restriction on the sliding base 11, thereby facilitating the sliding base 11 to slide on the roller 31, and finally realizing the movement of the canopy body 1.

[0062] The rotation of roller 31 and gear 32 drives the eccentric wheel 51 to rotate. During the rotation of the eccentric wheel 51, the piston rod 52 moves up and down, which in turn drives the piston plate 53 to slide up and down in the lubricant storage tank 54. This allows the lubricant in the lubricant storage tank 54 to be delivered to the gear 32 through the leakage hole, making the gear 32 rotate more smoothly and achieving the technical effect of maintenance.

[0063] The installation of cable 66 achieves the technical effect of traction and fixation for the canopy body 1. When the canopy body 1 is in the construction state, if cable 66 is slack, the coil spring 62 automatically tightens, and the resulting torque drives cable 66 to rotate around the axis, achieving the technical effect of automatic tightening and keeping the canopy body 1 in a stable state. Ratchet 63 is coaxially installed with coil spring 62, and pawl 65 is engaged in the tooth groove of ratchet 63 to prevent cable 66 from reversing and loosening under the action of coil spring 62, ensuring that cable 66 is always in a taut state and providing continuous and reliable lateral wind-resistant support for the canopy body 1.

[0064] During the movement of the canopy body 1, the sliding base 11 can drive the slider 61 to move synchronously through the connection block 67 between the slider 61 and the sliding base 11, thereby achieving the fixation of the canopy body 1 at different positions.

[0065] It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this invention, and these should also be considered within the scope of protection of this invention. These modifications and improvements will not affect the effectiveness of the invention or the practicality of the patent. The scope of protection claimed in this application shall 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. A temporary canopy device for subway construction, comprising a canopy body (1) and a base (2) fixed to the ground, characterized in that, Also includes: The double-track guide rail (21) and sliding rail (22) are set on the base (2). An auxiliary moving mechanism (3) is rotatably connected inside the double-track guide rail (21). Locking mechanisms (4) are provided on both sides of the auxiliary moving mechanism (3). A cable adjustment mechanism (6) is slidably installed in the sliding track (22). The cable adjustment mechanism (6) is fixedly connected to the canopy body (1), and a locking mechanism (4) is provided in front and behind the cable adjustment mechanism (6).

2. The temporary canopy device for subway construction according to claim 1, characterized in that: Multiple sliding bases (11) are provided on both sides of the bottom of the canopy body (1). The sliding bases (11) are slidably engaged with the double-row guide rails (21). Locking mechanisms (4) are provided at the front and rear of the sliding bases (11). The auxiliary moving mechanism (3) is fixedly connected to a lubrication mechanism (5) at its end. The lubrication mechanism (5) is rotatably connected to the inner walls of both sides of the double-track guide rail (21). The sliding track (22) is located on the outside of the double-track guide rail (21).

3. A temporary canopy device for subway construction according to claim 2, characterized in that: The canopy body (1) is composed of multiple canopies of different diameters that are interlocked, and the front and rear sides of the canopy body (1) are provided with entrances and exits (12), and the top of the canopy body (1) is provided with multiple light-transmitting windows (13).

4. A temporary canopy device for subway construction according to claim 3, characterized in that: The auxiliary moving mechanism (3) includes a roller (31) that cooperates with the sliding base (11), and gears (32) are fixedly connected to both ends of the roller (31).

5. A temporary canopy device for subway construction according to claim 4, characterized in that: The locking mechanism (4) includes a rack plate (41) that meshes with the gear (32), a push rod (42) is fixedly connected to the lower end of the rack plate (41), and a pull rope (43) is fixedly connected to the outer side of the rack plate (41). A spring (44) is fitted on the pull rope (43), and a limit block (45) is fixedly connected to the end of the pull rope (43). The limit block (45) slides in cooperation with the limit groove opened on the base (2). One end of the spring (44) is fixedly connected to the limiting block (45), and the other end abuts against the inner wall of the limiting groove.

6. A temporary canopy device for subway construction according to claim 5, characterized in that: Limiting blocks (45) are slidably provided on both the front and rear sides of the sliding base (11).

7. A temporary canopy device for subway construction according to claim 6, characterized in that: The lubrication mechanism (5) includes an eccentric wheel (51) fixedly connected to the end of the gear (32), and the eccentric wheel (51) is rotatably connected to the inner walls of both sides of the double-track guide rail (21); A piston rod (52) is rotatably connected to the eccentric wheel (51), and a piston plate (53) is provided at the end of the piston rod (52). The piston plate (53) is slidably connected to the lubricant storage tank (54) located above the gear (32). The bottom of the lubricant storage tank (54) has multiple drainage holes, and the lubricant storage tank (54) is equipped with a lubricant feeding pipe (55), which extends out of the top of the base (2).

8. A temporary canopy device for subway construction according to claim 7, characterized in that: The cable adjustment mechanism (6) includes a slider (61) slidably connected to the sliding rail (22), a coil spring (62) rotatably connected to the slider (61), a ratchet (63) fixedly connected to the end of the coil spring (62), and the ratchet (63) rotatably connected to the slider (61). A spring plate (64) is fixedly connected to the slider (61), and a pawl (65) is fixedly connected to the spring plate (64). The pawl (65) cooperates with the ratchet (63).

9. A temporary canopy device for subway construction according to claim 8, characterized in that: The top of the coil spring (62) is fixedly connected to a cable (66), which is fixedly connected to the canopy body (1). The sliding track (22) is connected to the adjacent double-row guide rail (21). The slider (61) and the sliding base (11) are fixedly connected by a connecting block (67).

10. A construction method for a temporary canopy for subway construction according to claim 9, characterized in that, Includes the following steps: S1: Lay the base (2) and fix it with anchor bolts, and install the canopy body (1) onto the base (1); S2: The locking mechanism (4) moves downward to release the restriction on the auxiliary moving mechanism (3) and the sliding base (11), and pulls the canopy body (1) so that the sliding base (11) moves in and out with the cooperation of the auxiliary moving mechanism (3); S3: During the rotation of the auxiliary moving mechanism (3), the lubrication mechanism (5) moves up and down to lubricate the auxiliary moving mechanism (3); S4: During the movement of the canopy body (1), the canopy body (1) is restricted by the cable adjustment mechanism (6).

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