A telescopic track type mobile spraying curing bench and its curing method

Abstract

The present invention belongs to the technical field of tunnel lining maintenance construction, and particularly relates to a telescopic track type mobile spraying maintenance gantry and a maintenance method thereof. The present invention comprises a telescopic walking track, a track fixing groove, a track sliding device, a track walking drive system, a spraying maintenance gantry and a gantry walking system; the telescopic walking track is connected with the track walking drive system, and the telescopic walking track moves along its trend in the track fixing groove; a water collecting tank, a water pipe fixing arch and a spraying pipeline are arranged on the spraying maintenance gantry, the water pipe fixing arch is fixed above the spraying maintenance gantry, the spraying pipeline is arranged along the top of the water pipe fixing arch, a plurality of 360° atomizing nozzles are evenly arranged at equal intervals on the spraying pipeline, and the spraying maintenance gantry performs spraying maintenance while walking along the telescopic walking track. The present invention reduces the occupation of the effective space in the tunnel; does not occupy the upper space of tunnel construction; greatly reduces the construction cost; and improves the maintenance efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of tunnel lining maintenance construction, and particularly relates to a telescopic track type mobile spray maintenance gantry and a maintenance method thereof. Background Art

[0002] At present, the tunnel secondary lining concrete technology is generally divided into three categories. One is to use a tunnel secondary lining spray maintenance trolley to maintain the secondary lining concrete. For example, Chinese Utility Model Patent CN202021556501.5 proposes a wheeled tunnel secondary lining maintenance trolley, which is integrated by a traveling mechanism, a supporting device, a water supply device and a spray device. The driving motor drives the traveling wheels to move through a chain, thereby driving the movement, and realizes the secondary lining spray maintenance through the spray device. Another example is Chinese Invention Patent CN201810045330.0, which proposes a full-automatic track type secondary lining maintenance system and a maintenance method. The system includes a gantry, a traveling device, a spray system, a water supply system and a control system. The intelligent maintenance system controls the movement or stop of the traveling device and the spray pipe to complete the secondary lining spray maintenance. However, the above methods have the following problems: 1. It is necessary to manufacture a large-section gantry according to the cross-section, and the manufacturing cost is high; 2. The maintenance trolley uses self-propelled rollers to travel or is provided with a track to travel on the track. The former is greatly affected by the flatness of the traveling surface in the tunnel, and there are obstacles in front of the traveling mixing wheels. The latter needs to lay the traveling track in advance, occupying a certain tunnel operation surface; The second is to directly use a sprinkler (fog cannon vehicle) for sprinkler maintenance. Further, Chinese Invention Patent CN201911173011.9 proposes a telescopic cantilever type secondary lining spray maintenance device, which can be installed on a sprinkler, and realizes the maintenance of the tunnel secondary lining concrete through the spray device on the telescopic cantilever. However, when using this method for maintenance, due to the limited size of the spray device, it is necessary to carry the vehicle back and forth to realize the all-round maintenance of the tunnel secondary lining concrete, which is severely affected by other construction operations in the tunnel. The third is in Chinese Utility Model Patent CN201822016680.2 and the "Automatic Spraying Maintenance Technology for the Top Pipe Laying of Single-track Railway Tunnel Lining" published by Wang Yanwei and Cheng Qi in "Railway Construction Technology", a cantilever rotary spraying type secondary lining maintenance device is proposed. The cantilever truss is installed on the secondary lining trolley, and a 360° rotatable nozzle installed on the seamless steel pipe at the vertex of the cantilever truss is used to realize the maintenance of the secondary lining concrete. However, in this method, the cantilever truss on the secondary lining trolley is integrally suspended above the secondary lining operation surface, occupying a large amount of construction operation space, having a certain impact on the construction operation, having a certain safety risk, and at the same time, when the rotary nozzle is damaged, it is necessary to set up a bracket for maintenance or replacement, and the maintenance operation is difficult. Summary of the Invention

[0003] The invention aims to solve the above problems and provides a telescopic track type mobile spray maintenance gantry and a maintenance method thereof.

[0004] The present invention is implemented by the following technical solutions: A telescopic rail type mobile spraying and curing gantry, including a secondary lining trolley truss; further including a telescopic walking rail, a rail fixing groove, a rail sliding device, a rail walking drive system, a spraying and curing gantry, and a gantry walking system;

[0005] The rail fixing groove is fixed on the secondary lining trolley truss, and the telescopic walking rail is rollingly connected to the rail fixing groove through the rail sliding device; the telescopic walking rail is connected to the rail walking drive system, and the telescopic walking rail moves along its direction in the rail fixing groove; the telescopic walking rail is connected to the spraying and curing gantry through the gantry walking system. A water collecting tank, a water pipe fixing arch, and a spraying pipeline are provided on the spraying and curing gantry. The water pipe fixing arch is fixed above the spraying and curing gantry, the spraying pipeline is arranged along the top of the water pipe fixing arch, and a number of 360° atomizing nozzles are evenly arranged at equal intervals on the spraying pipeline. The spraying and curing gantry performs spraying and curing while walking along the telescopic walking rail.

[0006] Further, the telescopic walking rail is an I-beam;

[0007] A plurality of rows of rail sliding devices are arranged along the length direction in the rail fixing groove. Each row of rail sliding devices includes upper and lower groups of pulley sets. The two groups of pulley sets are rotatably connected to the top and bottom surfaces of the rail fixing groove. The telescopic walking rail is rollingly connected between the two groups of pulley sets. Each group of pulley sets includes four pulleys, and the four pulleys are arranged in sequence and rollingly connected to the web of the telescopic walking rail.

[0008] Further, the rail walking drive system includes a drive gear, a drive shaft, and a running drive device;

[0009] The running drive device is connected to the drive shaft, and the drive shaft is connected to the drive gear through a drive bearing;

[0010] A rack is provided on the telescopic walking rail along its running direction, and the rack meshes with the drive gear.

[0011] Further, the gantry walking system includes four rollers and a gantry walking roller drive device for driving the rollers to rotate;

[0012] The four rollers are symmetrically rotatably connected to the four corners at the bottom of the spraying and curing gantry in pairs;

[0013] There are two telescopic walking rails, and the two telescopic walking rails are arranged side by side. Two rollers are respectively rollingly connected to the tops of the two telescopic walking rails.

[0014] Further, a limiting device is provided at the top of the end of the telescopic walking rail;

[0015] A limit mark is provided at the bottom of the starting end of the telescopic walking track.

[0016] Furthermore, this application also includes a remote control system for controlling the walking roller drive device of the console frame, the 360° atomizing nozzle, and the traveling drive device.

[0017] Furthermore, a time relay is provided inside the walking roller drive device of the gantry.

[0018] Furthermore, this application also includes a maintenance ladder, which is located outside the truss of the secondary lining trolley.

[0019] Furthermore, the spray pipe is arranged along the tunnel contour, and the spray pipe is 25 cm away from the secondary lining concrete surface of the tunnel.

[0020] A maintenance method for a telescopic track type mobile spray maintenance gantry. The telescopic walking track extends and travels outward; while the spray maintenance gantry travels back and forth on the telescopic walking track, the secondary lining concrete of the tunnel is spray-maintained through the 360° atomizing nozzle.

[0021] The beneficial effects of the present invention compared with the prior art:

[0022] 1. In this application, the telescopic walking track is arranged on both sides of the top of the main truss of the trolley instead of on the tunnel invert filling layer, reducing the occupation of the effective space inside the tunnel and not affecting the construction operation.

[0023] 2. After the spray maintenance in this application is completed, the telescopic walking track can be retracted to the minimum stroke, without occupying the upper space of the tunnel construction and not affecting the use of large mechanical equipment. At the same time, the 360° atomizing nozzle can be repaired and replaced using the maintenance ladder.

[0024] 3. This application uses a small spray maintenance gantry (1 / 7 of the length of the traditional secondary lining maintenance trolley). A water pipe fixing arch and a 360° atomizing nozzle are arranged on the top of the spray maintenance gantry. The spray maintenance gantry sprays while moving driven by the gantry traveling system, without the need to separately process a large maintenance trolley according to the secondary lining maintenance section of the tunnel and the single-cycle construction length, reducing the processing cost by about 70%, greatly reducing the construction cost; in addition, spraying and maintaining while moving makes the maintenance more uniform and the maintenance effect better.

[0025] 4. This application can achieve all-round maintenance without a carrier vehicle or other equipment and is not affected by other construction processes inside the tunnel.

[0026] 5. This application is provided with a time relay to achieve timed automatic spray maintenance; at the same time, it can also be manually controlled for key part maintenance. Compared with the traditional maintenance process, it effectively reduces the consumption of construction maintenance water and improves the maintenance efficiency.

[0027] 6. This application conducts remote control through a remote control system, eliminating the need for working at heights and reducing construction risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is the front view of the present invention;

[0029] Figure 2 is a schematic diagram of the retracted state of the telescopic track;

[0030] Figure 3 is a schematic diagram of the working state of the telescopic track;

[0031] Figure 4 is a side view of the mobile spray curing bench;

[0032] Figure 5 is the front view of the mobile spray curing bench;

[0033] Figure 6 is a schematic diagram of the connection between the telescopic walking track, the track sliding system and the track fixing groove;

[0034] Figure 7 is a schematic diagram of the connection between the track walking drive system, the telescopic walking track and the track fixing groove;

[0035] Figure 8 is a schematic diagram of the connection between the drive gear and the middle groove structure of the telescopic walking track;

[0036] In the figures: 1 - secondary lining trolley truss, 2 - spray curing bench, 3 - water pipe fixing arch, 4 - spray pipe, 5 - 360° atomizing nozzle, 6 - water collection tank, 7 - bench traveling system, 8 - bench traveling roller drive device, 9 - track fixing groove, 10 - telescopic walking track, 11 - track sliding device, 12 - traveling drive device, 13 - drive gear, 14 - drive shaft, 15 - maintenance ladder, 16 - limiting device, 17 - rack, 18 - roller, 19 - main trolley truss. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0037] The following specific embodiments illustrate the implementation manners of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0038] It should be noted that the structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the limiting conditions under which the present invention can be implemented. Therefore, they do not have substantial technical significance. Any modification of the structure, change in the ratio relationship, or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle", and "one" cited in this specification are only for the convenience of clear narration and are not used to limit the scope under which the present invention can be implemented. The change or adjustment of their relative relationships, without substantial change in the technical content, should also be regarded as the scope under which the present invention can be implemented.

[0039] Referring to Figures 1 to 8 , the present invention provides a technical solution: a telescopic track type mobile spraying and curing gantry, including a secondary lining trolley truss 1; it also includes a telescopic walking track 10, a track fixing groove 9, a track sliding device 11, a track walking drive system, a spraying and curing gantry 2, and a gantry walking system;

[0040] The track fixing groove 9 is fixed on the secondary lining trolley truss 1, and the telescopic walking track 10 is rollingly connected to the track fixing groove 9 through the track sliding device 11; the telescopic walking track 10 is connected to the track walking drive system, and the telescopic walking track 10 moves along its direction in the track fixing groove 9; the telescopic walking track 10 is connected to the spraying and curing gantry 2 through the gantry walking system. A water collection tank 6, a water pipe fixing arch 3, and a spraying pipeline 4 are provided on the spraying and curing gantry 2. The water collection tank 6 is located on the operation platform of the spraying and curing gantry 2 and is used to supply water to the entire spraying and curing device; the water pipe fixing arch 3 is fixed above the spraying and curing gantry 2, the spraying pipeline 4 is arranged along the top of the water pipe fixing arch 3, and a number of 360° atomizing nozzles 5 are evenly arranged at equal intervals on the spraying pipeline 4. The spraying and curing gantry 2 performs spraying and curing while walking along the telescopic walking track 10.

[0041] The telescopic walking track 10 is an I-beam;

[0042] A plurality of columns of track sliding devices 11 are arranged along the length direction in the track fixing groove 9. Each column of track sliding devices 11 includes upper and lower groups of pulley sets. The two groups of pulley sets are rotatably connected to the top surface and the bottom surface of the track fixing groove 9. The telescopic walking track 10 is rollingly connected between the two groups of pulley sets. Each group of pulley sets includes four pulleys, and the four pulleys are arranged in sequence and rollingly connected to the web of the telescopic walking track 10. On the one hand, the track sliding device 11 assists in telescopic movement, facilitating the telescopic movement of the telescopic walking track 10 in the track fixing groove 9. On the other hand, it clamps and fixes the telescopic walking track 10, restricting the up, down, left, and right shaking of the telescopic walking track 10 during the telescopic process, making its telescopic process more stable.

[0043] The track walking drive system includes a drive gear 13, a drive shaft 14, and a traveling drive device 12;

[0044] The traveling drive device 12 is connected to the drive shaft 14, and the drive shaft 14 is connected to 13 through a drive bearing;

[0045] A rack 17 is provided along the traveling direction on the telescopic walking track 10, and the rack 17 meshes with the drive gear 13; by driving the drive shaft 14 and the drive gear 13 to rotate through the traveling drive device 12, the telescopic walking of the telescopic walking track 10 is completed.

[0046] The gantry traveling system includes four rollers 18 and a gantry traveling roller drive device 8 for driving the rotation of the rollers 18;

[0047] The four rollers 18 are symmetrically rotatably connected to the four corners at the bottom of the spray curing gantry 2 in pairs;

[0048] There are two telescopic walking tracks 10, and the two telescopic walking tracks 10 are arranged side by side. Two rollers 18 are respectively rollingly connected to the tops of the two telescopic walking tracks 10;

[0049] The gantry traveling roller drive device 8 controls the gantry traveling system, driving the spray curing gantry 2 to travel on the telescopic walking track 10.

[0050] A limiting device 16 is provided at the top of the end (i.e., the end close to the tunnel entrance) of the telescopic walking track 10, which is used to control the detachment of the spray curing gantry 2 when it travels along the telescopic walking track 10;

[0051] A limiting mark is provided at the bottom of the starting end (i.e., the end far from the tunnel entrance) of the telescopic walking track 10 to assist in controlling the maximum and minimum travel of the walking track.

[0052] This application also includes a remote control system for the walking roller drive device 8 of the console frame, the 360° atomizing nozzle 5, and the traveling drive device 12. Construction workers can use the remote control system to control the telescopic movement of the telescopic walking track 10, control the movement of the spray curing bench 2 on the telescopic walking track 10, and control the spray curing of the 360° atomizing nozzle 5.

[0053] A time relay is provided inside the bench walking roller drive device 8 to achieve timed automatic spray curing.

[0054] This application also includes a maintenance ladder 15. The maintenance ladder 15 is located outside the secondary lining trolley truss 1, and the 360° atomizing nozzle 5 can be repaired and replaced through the maintenance ladder 15.

[0055] The spray pipe 4 is arranged along the tunnel contour, and the spray pipe 4 is 25 cm away from the secondary lining concrete surface of the tunnel.

[0056] Daily maintenance and repair of this application: Daily maintenance personnel can repair and replace the 360° atomizing nozzle 5 through the maintenance ladder 15.

[0057] A curing method for a telescopic track type mobile spray curing bench. The telescopic walking track 10 extends and travels outward; while the spray curing bench 2 travels back and forth on the telescopic walking track 10, the secondary lining concrete of the tunnel is spray-cured through the 360° atomizing nozzle 5.

[0058] Curing method:

[0059] S1: Construction preparation: Fill the water collection tank 6 with water;

[0060] S2: Working state, that is, the telescopic walking track 10 extends: Control the traveling drive device 12 through the remote control system, so as to drive the drive shaft 14 and the drive gear 13 to rotate, drive the telescopic walking track 10 to travel outward, observe the limit mark at the bottom of the telescopic walking track 10, and control the telescopic walking track 10 to travel to the maximum stroke;

[0061] S3: Spray curing: 1) Start the bench walking roller drive device 8 through the remote control system to control the bench walking system, drive the spray curing bench 2 to travel on the telescopic walking track 10, and at the same time achieve spray curing of the secondary lining concrete of the tunnel through the 360° atomizing nozzle 5. Control the farthest walking distance through the limit device 16. During spray curing, a time-set relay is set to achieve timed automatic spray curing, and key parts can also be cured through manual remote control;

[0062] S4: Recycling state, i.e., the telescopic walking track 10 contracts: 1) After the spray curing is completed, start the gantry walking system through the gantry walking roller drive device 8 by the remote control system, and drive the spray curing gantry 2 to travel to the farthest stroke on the telescopic walking track 10; 2) Through the remote control system, control the traveling drive device 12, thereby driving the drive shaft 14 and the drive gear 13 to rotate, driving the telescopic walking track 10 to travel inward, observe the lower limit mark of the telescopic walking track 10, and control the walking track to travel to the minimum stroke.

[0063] The above embodiments are only illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A telescopic track type mobile spraying and curing bench, comprising a secondary lining trolley truss (1); characterized in that: It also includes telescopic walking tracks (10), track fixing grooves (9), track sliding devices (11), a track walking drive system, a spray curing bench (2) and a bench walking system (7); The telescopic walking tracks (10) are arranged on both sides of the top of the main truss of the lining trolley; the track fixing grooves (9) are fixed on the lining trolley truss (1), and the telescopic walking tracks (10) are rollingly connected to the inside of the track fixing grooves (9) through the track sliding devices (11); the telescopic walking tracks (10) are connected to the track walking drive system, and the telescopic walking tracks (10) move along its direction in the track fixing grooves (9); the telescopic walking tracks (10) are connected to the spray curing bench (2) through the bench walking system (7). A water collection tank (6), a water pipe fixing arch (3) and a spray pipe (4) are provided on the spray curing bench (2). The water pipe fixing arch (3) is fixed above the spray curing bench (2), the spray pipe (4) is arranged along the top of the water pipe fixing arch (3), and a number of 360° atomizing nozzles (5) are evenly arranged at equal intervals on the spray pipe (4). The spray curing bench (2) performs spray curing while walking along the telescopic walking tracks (10); The track walking drive system includes a drive gear (13), a drive shaft (14) and a running drive device (12); The bench walking system (7) includes four rollers (18) and a bench walking roller drive device (8) for driving the rollers (18) to rotate; It also includes a remote control system for controlling the bench walking roller drive device (8), the 360° atomizing nozzles (5) and the running drive device (12).

2. The telescopic rail type movable spraying curing bench according to claim 1, wherein: The telescopic walking tracks (10) are I-beams; Multiple columns of track sliding devices (11) are arranged along the length direction inside the track fixing grooves (9). Each column of track sliding devices (11) includes upper and lower groups of pulley sets. The two groups of pulley sets are rotatably connected to the top and bottom surfaces of the track fixing grooves (9), and the telescopic walking tracks (10) are rollingly connected between the two groups of pulley sets. Each group of pulley sets includes four pulleys, and the four pulleys are arranged in sequence and rollingly connected to the web of the telescopic walking tracks (10).

3. A telescopic rail type mobile spray curing bench according to claim 1 or 2, characterized in that: The running drive device (12) is connected to the drive shaft (14), and the drive shaft (14) is connected to the drive gear (13) through a drive bearing; A rack (17) is arranged along the running direction on the telescopic walking tracks (10), and the rack (17) meshes with the drive gear (13).

4. The telescopic rail type mobile spray curing bench according to claim 3, characterized in that: The four rollers (18) are symmetrically rotatably connected to the four corners at the bottom of the spray curing bench (2) in pairs; There are two telescopic walking tracks (10), and the two telescopic walking tracks (10) are arranged side by side. The two telescopic walking tracks (10) are arranged on the tops of both sides of the main truss (19) of the lining trolley, and two rollers (18) are respectively rollingly connected to the tops of the two telescopic walking tracks (10).

5. The telescopic rail type movable spray curing bench according to claim 4, wherein: A limiting device (16) is provided at the top of the end of the telescopic walking tracks (10); A limiting mark is provided at the bottom of the starting end of the telescopic walking tracks (10).

6. The telescopic track type mobile spray curing bench according to claim 1, characterized in that: A time relay is arranged inside the bench walking roller drive device (8).

7. The telescopic rail type movable spray curing bench according to claim 6, wherein: It further includes a maintenance ladder (15), and the maintenance ladder (15) is located outside the secondary lining trolley truss (1).

8. A telescopic rail type mobile spraying curing bench according to claim 7, characterized in that: The spray pipeline (4) is arranged along the tunnel contour, and the spray pipeline (4) is 25 cm away from the secondary lining concrete surface of the tunnel.

9. A curing method for the telescopic rail type movable spraying curing bench described in claim 1, characterized in that: The telescopic walking track (10) extends and travels outward; while the spray curing gantry (2) travels back and forth on the telescopic walking track (10), it sprays and cures the secondary lining concrete of the tunnel through the 360° atomizing nozzle (5).

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