Rotary U-turn platform for tunnel construction

Abstract

The utility model belongs to the field of tunnel construction, particularly relates to a rotary U-turn platform for tunnel construction, and aims to solve the problems that the mileage of an existing tunnel is longer and longer, the distance between a tunnel face and a portal is longer and longer, and a single-track railway tunnel is narrow in width, narrow and small in space, large in reversing difficulty, low in efficiency and poor in safety. A front approach bridge is arranged at the front end of the trestle main body, a rear approach bridge is arranged at the rear end of the trestle main body, a supporting platform is arranged at one end of the rear approach bridge, a groove is formed in the top of the supporting platform, and a rotating shaft is rotationally connected into the groove. The driving motor drives the driving gear and the driven gear to rotate in a meshed mode, stable and rapid rotation of the rotary U-turn platform is achieved, so that a vehicle above is driven to achieve U-turn operation, the stability of the rotary U-turn platform in the rotating process is guaranteed through the arrangement of the fixed supporting wheels, and potential safety hazards caused by shaking or deviation are prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to a tunnel construction technology field especially relates to a tunnel construction rotation turning platform. BACKGROUND

[0002] At present, in the tunnel construction process of single line railway, the traditional concrete tank truck and the slag vehicle need to back up from the hole to the working face, and then open out the hole after the work is completed. Because the tunnel mileage is getting longer and longer, the distance between the working face and the hole is getting farther and farther, the single line railway tunnel width is relatively narrow, and the back-up process needs to pass through the door frame of water ditch cable trolley, maintenance trolley, secondary lining trolley and waterproof board steel trolley in turn, the space is narrow, the back-up difficulty is big, the efficiency is low, and the safety is poor. UTILITARY MODEL CONTENT

[0003] The utility model discloses a tunnel construction rotation turning platform, which solves the problems of long tunnel mileage, long distance between the working face and the hole, narrow single line railway tunnel width, narrow space, big back-up difficulty, low efficiency and poor safety in the prior art.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] A tunnel construction rotation turning platform, comprising a trestle main body, a front approach bridge is arranged at the front end of the trestle main body, a rear approach bridge is arranged at the rear end of the trestle main body, a support platform is arranged at one end of the rear approach bridge, a groove is formed in the top of the support platform, a rotating shaft is rotatably connected in the groove, a rotation turning platform is fixedly connected to the top of the rotating shaft, and a driving assembly for driving the rotation of the rotation turning platform is arranged in the groove.

[0006] A support assembly for supporting the rotation turning platform is arranged in the groove.

[0007] In a possible design, the driving assembly comprises a hydraulic motor fixedly connected to the inner wall of the bottom of the groove, a driving gear is fixedly connected to the output shaft of the hydraulic motor, a driven gear is fixedly sleeved on the outer wall of the rotating shaft, and the driven gear is engaged with the driving gear.

[0008] In a possible design, the support assembly comprises a fixed track fixedly connected to the bottom of the rotation turning platform, and a plurality of rotating wheels are fixedly connected to the inner wall of the bottom of the groove and used in cooperation with the fixed track.

[0009] In a possible design, a plurality of fixed support wheels are fixedly connected to the inner wall of the bottom of the groove and abut against the bottom of the rotation turning platform.

[0010] In a possible design, a hydraulic operating valve and an electric control box are respectively provided on both sides of the trestle body, and a rear walking mechanism is provided at one end of the rear approach bridge.

[0011] In a possible design, a travel lifting motor is provided on both sides of the rotary U-turn platform, and a piston rod of the travel lifting motor is fixedly connected to a travel wheel.

[0012] In a possible design, one end of the rotating U-turn platform is rotatably connected to a small approach bridge, and one end of the rotating U-turn platform is rotatably provided with a lifting cylinder, and one end of the piston rod of the lifting cylinder is rotatably connected to one side of the bottom of the small approach bridge.

[0013] In a possible design, a movable support leg and a front support leg are provided at one end of the trestle body close to the front approach bridge.

[0014] In this application, the rotating U-turn platform is driven by a hydraulic motor, equipped with a slewing bearing and gear transmission, with a maximum load-bearing capacity of 35 tons. The size can be customized according to the size of the tunnel section. The rotating U-turn platform is equipped with multiple sets of fixed support wheels and rotating wheels. There is a lifting cylinder on the upper part of the walking wheel, which can move forward and backward in conjunction with the traction of the trestle. The rear approach bridge of the rotating U-turn platform is equipped with a cylinder for lifting.

[0015] By starting the hydraulic motor, the output shaft of the hydraulic motor drives the driving gear to rotate, the driving gear drives the driven gear to rotate, the driven gear drives the rotary turning platform to rotate, and the rotary turning platform drives the vehicle above to perform the U-turn operation, saving time. At the same time, the setting of the fixed support wheel ensures the stability of the rotation of the rotary turning platform. The cooperation of the rotating wheel and the fixed track further improves the stability of the device, making it more convenient to use.

[0016] Beneficial Effects: Efficient U-turn Operation: The drive motor drives the meshing rotation of the driving and driven gears, achieving smooth and rapid rotation of the rotating U-turn platform, thereby driving the vehicles above to complete the U-turn operation. This process significantly saves time and improves the efficiency of vehicle scheduling during tunnel construction.

[0017] Stable Support and Rotation: The fixed support wheels ensure the stability of the rotating U-turn platform during rotation, preventing safety hazards caused by shaking or deviation. At the same time, the combination of the rotating wheels and the fixed track further enhances the stability of the device, making the rotation more smooth and controllable.

[0018] Flexible customization and strong adaptability: The size of the rotary turning platform can be customized according to the size of the tunnel section, which means that the device can be widely used in tunnel projects of different specifications and different construction requirements, with strong adaptability and flexibility.

[0019] Convenient movement and lifting: The travel lifting motor enables the rotating turning platform to move forward and backward in coordination with the trestles. The lifting cylinder also allows the small approach bridge to be raised and lowered. These functions together improve the mobility and convenience of the device in tunnel construction.

[0020] Comprehensive control and management: The setting of hydraulic operating valves and electric control box allows operators to easily control various functions of the rotary turning platform, including rotation, movement, lifting, etc., thereby realizing comprehensive control and management of the entire construction process.

[0021] Improve construction safety: Through optimized design and stable support, this application effectively reduces the safety risks caused by vehicle U-turns during tunnel construction, providing a safer and more reliable working environment for construction personnel and vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the main structure of a rotating turning platform for tunnel construction proposed by the utility model;

[0023] Figure 2 This is a schematic diagram of the top view of the structure of a rotating turning platform for tunnel construction proposed by the utility model;

[0024] Figure 3 This is a schematic diagram of the main structure of the small approach bridge and the rear approach bridge in a rotating U-turn platform for tunnel construction proposed by the utility model;

[0025] Figure 4 This is a schematic diagram of the main structure of a small approach bridge and a supporting platform in a rotating turning platform for tunnel construction proposed by the utility model;

[0026] Figure 5 for Figure 4 Cross-sectional view of AA;

[0027] Figure 6 for Figure 4 Cross-sectional view of the middle BB;

[0028] Figure 7 The utility model provides a schematic diagram of the top view of the rotating U-turn platform for tunnel construction.

[0029] In the figure: 1. Main body of the trestle; 2. Rear traveling mechanism; 3. Rear approach bridge; 4. Rotating turning platform; 5. Movable outriggers; 6. Front outriggers; 7. Front approach bridge; 8. Hydraulic operating valve; 9. Electric control box; 10. Lifting cylinder; 11. Small approach bridge; 12. Travel and lifting motor; 13. Support platform; 14. Fixed support wheel; 15. Rotating wheel; 16. Rotating shaft; 17. Driven gear; 18. Hydraulic motor; 19. Driving gear; 20. Travel wheel; 21. Fixed track. DETAILED DESCRIPTION

[0030] 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.

[0031] Embodiment 1; reference Figure 1-7 A tunnel construction rotary turning platform is applied in the field of tunnel construction, comprising: a trestle main body 1, the front end of the trestle main body 1 is provided with a front approach bridge 7, the rear end of the trestle main body 1 is provided with a rear approach bridge 3, one end of the rear approach bridge 3 is provided with a support platform 13, a groove is opened in the top of the support platform 13, a rotating shaft 16 is rotatably connected in the groove, the top of the rotating shaft 16 is fixedly connected with a rotary turning platform 4, a driving assembly for driving the rotary turning platform 4 to rotate is arranged in the groove, the driving assembly comprises a hydraulic motor 18 fixedly connected to the inner wall of the bottom of the groove, the output shaft of the hydraulic motor 18 is fixedly connected with a driving gear 19, the outer wall of the rotating shaft 16 is fixedly sleeved with a driven gear 17, the driven gear 17 is engaged with the driving gear 19, by starting the hydraulic motor 18, the output shaft of the hydraulic motor 18 drives the driving gear 19 to rotate, the driving gear 19 drives the driven gear 17 to rotate, the driven gear 17 drives the rotary turning platform 4 to rotate, the rotary turning platform 4 drives the vehicle above to realize turning operation, time is saved;

[0032] A support assembly for supporting the rotary turning platform 4 is arranged in the groove, the support assembly comprises a fixed track 21 fixedly connected to the bottom of the rotary turning platform 4, a plurality of rotating wheels 15 are fixedly connected to the inner wall of the bottom of the groove, the rotating wheels 15 are used in cooperation with the fixed track 21, a plurality of fixed support wheels 14 are fixedly connected to the inner wall of the bottom of the groove, the fixed support wheels 14 abut against the bottom of the rotary turning platform 4, and meanwhile the arrangement of the fixed support wheels 14 ensures the stability of the rotary turning platform 4, the cooperation of the rotating wheels 15 and the fixed track 21 further improves the stability of the device, and the use is more convenient.

[0033] Embodiment 2; reference Figure 1-7On the basis of improving embodiment 1: the two sides of the trestle body 1 are respectively provided with a hydraulic operating valve 8 and an electric control box 9, one end of the rear approach bridge 3 is provided with a rear traveling mechanism 2, the rear traveling mechanism 2 is consistent with the one in the announcement No. CN217810461U, wherein the outer wall of the side box girder is provided with a guide driven sprocket, the outer wall of the side box girder is provided with a driving device, the output end of the driving device is provided with a driving sprocket, the guide driven sprocket and the driving sprocket are connected through a chain transmission, the two sides of the rotary turning platform 4 are provided with a traveling lifting motor 12, the piston rod of the traveling lifting motor 12 is fixedly connected with a traveling wheel 20, one end of the rotary turning platform 4 is rotatably connected with a small approach bridge 11, one end of the rotary turning platform 4 is provided with a lifting oil cylinder 10, one end of the piston rod of the lifting oil cylinder 10 is rotatably connected with the bottom side of the small approach bridge 11, and the trestle body 1 is provided with a movable supporting leg 5 and a front supporting leg 6 close to one end of the front approach bridge 7.

[0034] However, as known to those skilled in the art, the working principle and wiring method of the hydraulic motor 18, the lifting oil cylinder 10, the hydraulic operating valve 8 and the electric control box 9 are common, the rear traveling mechanism 2 is consistent with the driving mechanism in the chain traction inverted arch trestle provided in the announcement No. CN217810461U, which belongs to the prior art, and all belong to conventional means or common knowledge, which will not be repeated here, and those skilled in the art can make any selection or arrangement according to their needs or convenience.

[0035] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A rotating turning platform for tunnel construction, characterized in that: The invention comprises a trestle bridge body (1), wherein a front approach bridge (7) is provided at the front end of the trestle bridge body (1), a rear approach bridge (3) is provided at the rear end of the trestle bridge body (1), a support platform (13) is provided at one end of the rear approach bridge (3), a groove is provided at the top of the support platform (13), a rotating shaft (16) is rotatably connected inside the groove, a rotating U-turn platform (4) is fixedly connected to the top of the rotating shaft (16), and a driving component for driving the rotating U-turn platform (4) to rotate is provided inside the groove; A support assembly for supporting the rotating U-turn platform (4) is provided inside the groove.

2. A tunnel construction rotating turning platform according to claim 1, characterized in that: The driving assembly comprises a hydraulic motor (18) fixedly connected to the inner wall of the bottom of the groove, the output shaft of the hydraulic motor (18) is fixedly connected to a driving gear (19), the outer wall of the rotating shaft (16) is fixedly sleeved with a driven gear (17), and the driven gear (17) is meshed with the driving gear (19).

3. The tunnel construction rotating turning platform according to claim 1, characterized in that: The support assembly comprises a fixed track (21) fixedly connected to the bottom of the rotating U-turn platform (4); a plurality of rotating wheels (15) are fixedly connected to the bottom inner wall of the groove; the rotating wheels (15) are used in conjunction with the fixed track (21).

4. The tunnel construction rotating turning platform according to claim 1, characterized in that: A plurality of fixed support wheels (14) are fixedly connected to the inner wall of the bottom of the groove, and the fixed support wheels (14) are in conflict with the bottom of the rotating U-turn platform (4).

5. The tunnel construction rotating turning platform according to claim 1, characterized in that: A hydraulic operating valve (8) and an electric control box (9) are respectively provided on both sides of the trestle main body (1), and a rear walking mechanism (2) is provided at one end of the rear approach bridge (3).

6. The tunnel construction rotating turning platform according to claim 1, characterized in that: Traveling and lifting motors (12) are provided on both sides of the rotating U-turn platform (4), and the piston rods of the traveling and lifting motors (12) are fixedly connected to traveling wheels (20).

7. The tunnel construction rotating turning platform according to claim 1, characterized in that: One end of the rotating U-turn platform (4) is rotatably connected to a small approach bridge (11), and one end of the rotating U-turn platform (4) is rotatably provided with a lifting cylinder (10), and one end of the piston rod of the lifting cylinder (10) is rotatably connected to one side of the bottom of the small approach bridge (11).

8. The tunnel construction rotating turning platform according to claim 1, characterized in that: The end of the trestle main body (1) close to the front approach bridge (7) is provided with a movable support leg (5) and a front support leg (6).

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