Tunnel portal support structure

Abstract

The utility model discloses a tunnel portal support structure which comprises an arched portal, pulley devices and two guide rails, each guide rail is provided with two groups of pulley devices, and four sides of the arched portal are fixed on the pulley devices. The pulley device comprises a roller carrier, rolling grooved wheels, a driving device, a linkage device and a cleaning device; the lower end of the roller carrier is rotationally connected with two groups of rolling grooved wheels, and one group of rolling grooved wheels is driven by the driving device; the cleaning devices are fixed to the two sides of the roller carrier and are in transmission connection with the rolling grooved wheels through the linkage devices, when the driving device is started, the rolling grooved wheels move the portal frame along the guide rails, meanwhile, the linkage devices transmit power of the rolling grooved wheels to the cleaning devices, and dust and broken stones on the rails are synchronously removed. By means of the integrated driving and sweeping linkage design, the problems that a traditional structure is prone to rail clamping and tedious in maintenance are solved, and the device has the advantages of being stable in operation, efficient in cleaning and low in maintenance cost and is suitable for complex tunnel construction environments.

Description

TECHNICAL FIELD

[0001] The utility model relates to a tunnel construction technical field, and specifically relates to a tunnel portal frame support structure. BACKGROUND

[0002] In tunnel engineering construction, the mobile portal frame support structure is the important equipment of guaranteeing construction safety and improving operation efficiency, and it is usually composed of an arch portal frame, a pulley assembly and a track system, and the translation of the portal frame is realized through a driving device to adapt to the needs of different construction sections. However, the tunnel portal frame support structure in the prior art still has significant defects in actual application:

[0003] Firstly, the tunnel construction environment is complex, and the track surface is easy to accumulate dust, gravel and other sundries. The traditional pulley device lacks an effective self-cleaning mechanism, and long-term operation is easy to cause the pulley to slip, jam or even derail due to track pollution, which seriously affects the stability of the equipment and the safety of the construction. Artificial cleaning is inefficient and has safety hazards.

[0004] Secondly, the conventional driving system usually adopts single-track driving or independent power design, which has low transmission efficiency and poor synchronicity, and is easy to cause the portal frame to be skewed, increasing the risk of track wear;

[0005] Thirdly, the structure with cleaning function often relies on an independent power source or a complex external transmission device, resulting in a large overall volume of the equipment, high maintenance cost, and difficulty in dynamically matching the cleaning action and the moving speed, and poor cleaning effect.

[0006] In view of the above problems, an integrated tunnel portal frame support scheme with efficient driving, self-adaptive cleaning and compact structure is needed to improve the reliability of the equipment and reduce the operation and maintenance cost. INVENTION CONTENTS

[0007] In view of the above deficiencies in the prior art, the utility model aims to provide a tunnel portal frame support structure with reliability, convenient maintenance and reduced maintenance cost.

[0008] The technical scheme adopted by the utility model to achieve the above purpose is: a tunnel portal frame support structure, comprising an arch portal frame, a pulley device and a guide rail, the guide rail is provided with two, and each guide rail is drivingly connected with two groups of pulley devices, and the four edges of the arch portal frame are fixedly connected with the pulley devices.

[0009] The utility model provides a specific structure of the pulley device, it includes gyro wheel frame, rolling groove wheel, drive arrangement, linkage device, cleaning device, the lower end of gyro wheel frame is rotatably connected with two groups of rolling groove wheel, is used for rolling movement along the guide rail, the rotation axis of one group of rolling groove wheel is connected with drive arrangement transmission after going out gyro wheel frame, drive arrangement is the movement of pulley device and provides drive power, drive arrangement fixedly connected in gyro wheel frame one side, gyro wheel frame both ends are fixedly connected with cleaning device respectively, the cleaning device is used for cleaning the dust or the boulder that accumulates on the guide rail, prevents rolling groove wheel from slipping or directly happening rail card on the guide rail, the cleaning device is connected with rolling groove wheel transmission through linkage device, is used for converting the rotation of rolling groove wheel into the power of cleaning device.

[0010] In the above technical solution, the drive device includes a drive motor, a first bevel gear and a second bevel gear, the drive motor is fixedly connected to one side of the gyro wheel frame, a first bevel gear is fixedly connected to the rotating shaft of the drive motor, the first bevel gear is meshingly connected with a second bevel gear, and the second bevel gear is fixedly connected to the rolling groove wheel on the opposite side.

[0011] In the above technical solution, the cleaning device includes a mounting frame, a cleaning wheel and a brush, the mounting frame is fixedly connected to both ends of the gyro wheel frame, the cleaning wheel is rotatably connected between the mounting frame and the gyro wheel frame, and the brush is fixedly connected to the outer periphery of the cleaning wheel.

[0012] In the above technical solution, the linkage device includes a first sprocket, an auxiliary wheel, a second sprocket, a worm, a worm gear, a drive shaft, a ratchet mechanism, a transmission shaft, a third sprocket and a fourth sprocket, one end of the rotating shaft of the rolling groove wheel is fixedly connected with a first sprocket, a second sprocket is rotatably connected to the upper end of the gyro wheel frame, an auxiliary wheel is rotatably connected to the gyro wheel frame between the second sprocket and the first sprocket, the first sprocket, the second sprocket and the auxiliary wheel are transmissionally connected with each other through a chain belt, a rotating groove hole is formed in the middle of the upper end of the gyro wheel frame, a worm is rotatably connected in the rotating groove hole, one end of the worm is fixedly connected with the second sprocket after penetrating out of the gyro wheel frame, the worm and the worm gear are meshingly connected with each other, the worm gear is fixedly connected to the middle of the drive shaft, the drive shaft is rotatably connected to the rotating shaft frame at both ends, the rotating shaft frame is fixedly connected to the upper end of the gyro wheel frame, the drive shaft is connected with the ratchet mechanism at both ends after penetrating through the rotating shaft frame, the other end of the ratchet mechanism is connected with the transmission shaft, the other end of the transmission shaft is fixedly connected with the third sprocket, the rotating shaft of the cleaning wheel is fixedly connected with the fourth sprocket after penetrating out of the mounting frame, and the fourth sprocket is transmissionally connected with the third sprocket through a chain belt.

[0013] In the above technical scheme, the upper end of the roller frame and the mounting frame is fixedly connected with a cover, the driving shaft and the transmission shaft are both rotationally connected in the cover, the cover and one side of the mounting frame are respectively fixedly connected with a protective cover, and the third sprocket and the fourth sprocket are both rotationally connected in the protective cover.

[0014] The utility model discloses the beneficial effect:

[0015] 1, adaptive cleaning ability, guarantee track environment safety: through the linkage device and transmit the rotary power of rolling groove wheel to the cleaning device, make the brush rotate with the portal frame movement synchronization, real -time removes the dust and the gravel on the track surface, need not additional power source can realize dynamic cleaning, effectively avoid the problem of pulley skidding, rail clamping caused by track pollution, significantly improve construction safety.

[0016] 2, double -track synchronous drive, enhance the stability of portal translation: adopt the gear wheel meshing transmission and double -track synchronous drive design, ensure that the rotational speed of both sides rolling groove wheel is consistent, avoids the problem of deflection or track wear caused by single -track drive, reduces the driving energy consumption simultaneously, improves portal overall movement precision and construction efficiency.

[0017] 3, integrated linkage structure, simplify the complexity of equipment: through the multistage transmission of sprocket chain, worm and worm gear and ratchet mechanism, the output power of driving device is efficiently converted into cleaning action, realizes the seamless cooperation of driving and cleaning function, cooperates the cover and the protective cover design, reduces the erosion of external environment to transmission component, prolongs the service life of equipment, and the overall structure is compact, reduces the maintenance cost.

[0018] 4, dynamic direction adaptation, improve cleaning efficiency: the ratchet mechanism automatically switches the power output of transmission shaft according to the direction of portal advancement, ensures that the cleaning wheel only rotates and cleans when the portal advances, avoids the invalid friction of brush and track in reverse movement, further optimizes cleaning effect and energy consumption control. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is whole three-dimensional structure schematic diagram of the utility model;

[0020] Figure 2 It is right view solid structure schematic diagram of the utility model pulley device;

[0021] Figure 3 It is driving device connection structure schematic diagram of the utility model;

[0022] Figure 4 It is left view solid structure schematic diagram of the utility model pulley device;

[0023] Figure 5 It is whole disassembly structure schematic diagram of the utility model pulley device.

[0024] In the figure: 1 arched portal, 2 pulley device, 3 guide rail;

[0025] 20 roller frame, 21 rolling groove wheel, 22 driving device, 23 linkage device, 24 cleaning device;

[0026] 221 driving motor, 222 first bevel gear, 223 second bevel gear;

[0027] 231 first sprocket, 232 auxiliary wheel, 233 second sprocket, 234 worm, 235 worm wheel, 236 drive shaft, 237 ratchet mechanism, 238 transmission shaft, 239 third sprocket, 2310 fourth sprocket, 2311 rotating shaft frame, 2312 cover, 2313 protective cover;

[0028] 241 mounting frame, 242 cleaning wheel, 243 brush. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0030] Please refer to Figures 1-5 A tunnel portal support structure, comprising an arched portal 1, a pulley device 2 and a guide rail 3, the guide rail 3 is provided with two, and each guide rail 3 is drivingly connected with two groups of pulley devices 2, and the four edges of the arched portal 1 are fixedly connected on the pulley devices 2; in the utility model, the arched portal 1 is used for playing a main supporting role inside the tunnel, and the pulley device 2 realizes portal translation operation through double-rail synchronous driving;

[0031] In the utility model, the specific structure of the pulley device 2 is provided, which comprises a roller frame 20, a rolling groove wheel 21, a driving device 22, a linkage device 23 and a cleaning device 24, the lower end of the roller frame 20 is rotatably connected with two groups of rolling groove wheels 21, which are used for rolling movement along the guide rail 3, the rotating shaft of one group of rolling groove wheels 21 is connected with the driving device 22 after penetrating out of the roller frame 20, the driving device 22 provides driving power for the movement of the pulley device 2, the driving device 22 is fixedly connected on one side of the roller frame 20, the roller frame 20 is fixedly connected with the cleaning device 24 at both ends respectively, the cleaning device 24 is used for cleaning the dust or stone blocks accumulated on the guide rail 3, so as to prevent the rolling groove wheel 21 from slipping or directly causing rail jamming on the guide rail 3, and the cleaning device 24 is drivingly connected with the rolling groove wheel 21 through the linkage device 23, and is used for converting the rotation of the rolling groove wheel 21 into the power of the cleaning device 24.

[0032] In the above technical scheme, the driving device 22 comprises a driving motor 221, a first bevel gear 222 and a second bevel gear 223, the driving motor 221 is fixedly connected on one side of the roller frame 20, the driving motor 221 is fixedly connected with the first bevel gear 222 on the rotating shaft, the first bevel gear 222 is meshingly connected with the second bevel gear 223, the second bevel gear 223 is fixedly connected on the rolling groove wheel 21 on the opposite side, in use, the driving motor 221 drives the first bevel gear 222 to rotate, the first bevel gear 222 drives the second bevel gear 223 to rotate, the second bevel gear 223 drives the rolling groove wheel 21 to rotate, thereby driving the device to move along the guide rail 3.

[0033] In the above technical scheme, the cleaning device 24 comprises a mounting frame 241, a cleaning wheel 242 and a brush 243, the two ends of the roller frame 20 are respectively fixedly connected with the mounting frame 241, the mounting frame 241 is rotatably connected with the cleaning wheel 242 between the roller frame 20, the outer periphery of the cleaning wheel 242 is fixedly connected with the brush 243, in the moving process of the device, the cleaning wheel 242 is driven to rotate, the cleaning wheel 242 cleans the dust or the broken stone on the guide rail 3 through the brush 243 on the outer periphery.

[0034] In the technical scheme, the linkage device 23 comprises a first sprocket wheel 231, an auxiliary wheel 232, a second sprocket wheel 233, a worm 234, a worm wheel 235, a driving shaft 236, a ratchet mechanism 237, a transmission shaft 238, a third sprocket wheel 239, a fourth sprocket wheel 2310, the first sprocket wheel 231 is fixedly connected to one end of the rotating shaft of the rolling groove wheel 21, the second sprocket wheel 233 is rotatably connected to the upper end of the roller frame 20, the auxiliary wheel 232 is rotatably connected to the roller frame 20 between the first sprocket wheel 231 and the second sprocket wheel 233, the first sprocket wheel 231, the second sprocket wheel 233 and the auxiliary wheel 232 are connected to each other through a chain belt, a rotating groove hole is formed in the middle of the upper end of the roller frame 20, the worm 234 is rotatably connected to the rotating groove hole, one end of the worm 234 is fixedly connected to the second sprocket wheel 233 after penetrating through the roller frame 20, the worm 234 is connected to the worm wheel 235, the worm wheel 235 is fixedly connected to the middle of the driving shaft 236, the driving shaft 236 is rotatably connected to the rotating shaft frame 2311 at both ends, the rotating shaft frame 2311 is fixedly connected to the upper end of the roller frame 20, the driving shaft 236 is connected to the ratchet mechanism 237 after penetrating through the rotating shaft frame 2311 at both ends, the ratchet mechanism 237 is connected to the transmission shaft 238 at the other end, the transmission shaft 238 is fixedly connected to the third sprocket wheel 239 at the other end, the rotating shaft of the cleaning wheel 242 is fixedly connected to the fourth sprocket wheel 2310 after penetrating through the mounting frame 241, the fourth sprocket wheel 2310 is connected to the third sprocket wheel 239 through a chain belt, in the specific operation, the driving device 22 drives the rolling groove wheel 21 to rotate, at this time, the rolling groove wheel 21 drives the first sprocket wheel 231 on the other side to rotate, the first sprocket wheel 231 drives the second sprocket wheel 233 to rotate through a chain belt, the second sprocket wheel 233 drives the worm 234 to rotate, the worm 234 drives the worm wheel 235 to rotate, the worm wheel 235 drives the driving shaft 236 to rotate, the driving shaft 236 drives the transmission shaft 238 at one end to rotate through the ratchet mechanism 237 (the transmission shaft 238 rotating along the direction of the guide rail 3, and the transmission shaft 238 away from the direction of the guide rail 3 does not rotate), the transmission shaft 238 drives the third sprocket wheel 239 at the other end to rotate, the third sprocket wheel 239 drives the fourth sprocket wheel 2310 to rotate through a chain belt, the fourth sprocket wheel 2310 drives the cleaning wheel 242 to rotate, and the dust and stones on the road are swept off through the brush 243 on the cleaning wheel 242.

[0035] In the technical scheme, the upper end of the roller frame 20 and the mounting frame 241 is fixedly connected with a cover 2312, the driving shaft 236 and the transmission shaft 238 are rotatably connected in the cover 2312, the cover 2312 and one side of the mounting frame 241 are fixedly connected with a protective cover 2313, the third sprocket wheel 239 and the fourth sprocket wheel 2310 are rotatably connected in the protective cover 2313.

[0036] It is apparent for a person skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, but that it can be implemented in other concrete forms without departing from the spirit or the essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary and non-limiting, the scope of the present application being defined by the claims appended hereto rather than by the above description, and all the changes which fall within the meaning and the scope of the equivalent elements of the claims are intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the claims to the figures in which the reference signs are used.

[0037] Furthermore, it should be understood that although the present specification describes exemplary embodiments, not every embodiment contains only one independent technical solution, and the present specification is described in this way only for the sake of clarity, and a person skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that a person skilled in the art can understand.

Claims

1. A tunnel gantry support structure, comprising an arched gantry (1), a pulley system (2), and a guide rail (3), characterized in that: The guide rail (3) is provided in two sections, and each guide rail (3) is connected to two sets of pulley devices (2). The four sides of the arched gate frame (1) are fixedly connected to the pulley devices (2). The pulley device (2) includes a roller frame (20), rolling grooved wheels (21), a drive device (22), a linkage device (23), and a cleaning device (24). The lower end of the roller frame (20) is rotatably connected to two sets of rolling grooved wheels (21). The shaft of one set of rolling grooved wheels (21) passes through the roller frame (20) and is connected to the drive device (22) for transmission. The drive device (22) is fixedly connected to one side of the roller frame (20). The two ends of the roller frame (20) are respectively fixedly connected to the cleaning device (24). The cleaning device (24) is connected to the rolling grooved wheels (21) for transmission through the linkage device (23).

2. The tunnel gantry support structure according to claim 1, characterized in that: The drive device (22) includes a drive motor (221), a first bevel gear (222) and a second bevel gear (223). The drive motor (221) is fixedly connected to one side of the roller frame (20). The first bevel gear (222) is fixedly connected to the shaft of the drive motor (221). The first bevel gear (222) is meshed with the second bevel gear (223). The second bevel gear (223) is fixedly connected to the rolling groove wheel (21) on the opposite side.

3. The tunnel gantry support structure according to claim 1, characterized in that: The cleaning device (24) includes a mounting frame (241), a cleaning wheel (242), and a brush (243). The two ends of the roller frame (20) are respectively fixedly connected to the mounting frame (241). The cleaning wheel (242) is rotatably connected between the mounting frame (241) and the roller frame (20). The brush (243) is fixedly connected to the outer periphery of the cleaning wheel (242).

4. A tunnel gantry support structure according to claim 3, characterized in that: The linkage device (23) includes a first sprocket (231), an auxiliary wheel (232), a second sprocket (233), a worm (234), a worm gear (235), a drive shaft (236), a ratchet mechanism (237), a transmission shaft (238), a third sprocket (239), and a fourth sprocket (2310). The first sprocket (231) is fixedly connected to one end of the rotating shaft of each of the rolling grooved wheels (21). The second sprocket (233) is rotatably connected to the upper end of the roller frame (20). An auxiliary wheel (232) is rotatably connected to the roller frame (20) between the second sprocket (233) and the first sprocket (231). The first sprocket (231), the second sprocket (233), and the auxiliary wheel (232) are interconnected via a chain belt. A rotating groove is provided in the middle of the upper end of the roller frame (20), and a worm (234) is rotatably connected within the rotating groove. One end of the worm gear (234) passes through the roller frame (20) and is fixedly connected to the second sprocket (233). The worm gear (234) and the worm wheel (235) are meshed with each other. The worm wheel (235) is fixedly connected to the middle of the drive shaft (236). The two ends of the drive shaft (236) are respectively rotatably connected to the rotating shaft frame (2311). The rotating shaft frame (2311) is fixedly connected to the upper end of the roller frame (20). The two ends of the drive shaft (236) pass through the rotating shaft frame (2311). 11) The first end of the first wheel is connected to the ratchet mechanism (237). The other end of the ratchet mechanism (237) is connected to the drive shaft (238). The other end of the drive shaft (238) is fixedly connected to the third sprocket (239). The shaft of the sweeping wheel (242) passes through the mounting bracket (241) and is fixedly connected to the fourth sprocket (2310). The fourth sprocket (2310) is connected to the third sprocket (239) via a chain belt.

5. A tunnel gantry support structure according to claim 4, characterized in that: The upper ends of the roller frame (20) and the mounting frame (241) are fixedly connected to a cover (2312). The drive shaft (236) and the transmission shaft (238) are both rotatably connected inside the cover (2312). The cover (2312) and the mounting frame (241) are respectively fixedly connected to a protective cover (2313). The third sprocket (239) and the fourth sprocket (2310) are both rotatably connected inside the protective cover (2313).

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