A temporary hydraulic support walking device for roadway excavation advance support

Abstract

The application discloses a kind of temporary hydraulic support walking device for roadway excavation advance support, including upper roof, the upper end surface of upper roof and located central position is fixed with intermediate support seat, both sides of intermediate support seat are rotatably provided with intermediate track, the upper end surface of upper roof and located two sides position symmetry is fixed with two side edge support seat, two side edge support frames are inclined to be arranged, both sides of each side edge support seat are rotatably provided with side edge track, the lower end surface of upper roof is symmetrically provided with two walking frames, and upper roof is movably arranged in the upper end surface of two walking frames;In the process of using, when excavator continues to drill, two walking frames follow behind, in this process, intermediate track and side edge track also follow movement under the driving of upper roof, intermediate track and side edge track are in contact with the top surface of roadway and move, continuously support roadway, do not need to repeatedly extend telescopic hydraulic rod, improve the overall moving speed, and high use safety.

Description

Technical Field

[0001] This invention relates to the field of tunnel excavation technology, and in particular to a temporary hydraulic support traveling device for advance support in tunnel excavation. Background Technology

[0002] During tunnel excavation, temporary hydraulic supports are needed to support the newly excavated tunnel roof to ensure the safety of the excavation. Existing temporary hydraulic support traveling devices have certain drawbacks. For example, these devices use multiple hydraulic support arms and plates to support the tunnel roof. When the tunneling machine continues to move forward, the traveling device needs to lower each hydraulic support arm and plate a certain distance before raising them to support the tunnel roof. This process of lowering and raising the hydraulic support arms and plates takes time. During this gap, the newly excavated tunnel roof is unsupported, posing a certain safety hazard. Summary of the Invention

[0003] The purpose of this invention is to solve the problems existing in the prior art and to propose a temporary hydraulic support traveling device for advance support in tunnel excavation.

[0004] To achieve the above objectives, the present invention adopts the following technical solutions:

[0005] A temporary hydraulic support traveling device for advance support in tunnel excavation includes an upper roof plate. A central support seat is fixed on the upper surface of the upper roof plate at its center. A central track is rotatably mounted on both sides of the central support seat. Two side support seats are symmetrically fixed on the upper surface of the upper roof plate at both sides. Both side support seats are inclined. A side track is rotatably mounted on both sides of each side support seat. Two traveling frames are symmetrically mounted on the lower surface of the upper roof plate. The upper roof plate is movably mounted on the upper surface of the two traveling frames. A bottom track is rotatably mounted on both sides of each traveling frame at its lower end. A cleaning mechanism one and a cleaning mechanism two are provided on the upper roof plate.

[0006] As a further technical solution of the present invention, each of the walking frames has multiple mounting slots on its upper surface, and a hydraulic rod is fixed to the bottom of each mounting slot. The ends of the telescopic ends of adjacent hydraulic rods are fixed with the same connecting plate, and the upper surface of the connecting plate is fixedly connected to the bottom of the upper top plate.

[0007] As a further technical solution of the present invention, the cleaning mechanism includes a central mounting seat movably disposed on the upper end surface of the upper top plate, a central brush roller rotatably disposed in the central mounting seat, and two side mounting seats symmetrically and movably disposed on the upper end surface of the upper top plate, each side mounting seat rotatably disposed in the side brush roller.

[0008] As a further technical solution of the present invention, two telescopic rods are symmetrically fixed between the middle mounting seat and the two side mounting seats and the upper end face of the top plate, and two abutment springs are symmetrically fixed between the middle mounting seat and the two side mounting seats and the upper end face of the top plate, with the abutment springs movably sleeved on the outer side wall of the telescopic rods.

[0009] As a further technical solution of the present invention, the second cleaning mechanism includes a suction hood fixed on the inner wall of two walking frames, a dust collection box provided on one side of the top plate, a ventilation hose connected between each suction hood and the dust collection box, an air pump fixed on the upper end face of the top plate, and a ventilation hose connected between the air pump and the dust collection box.

[0010] As a further technical solution of the present invention, the lower section of the dust collection box is trapezoidal in shape, a V-shaped partition is fixed on the inner wall of the dust collection box, a discharge pipe is fixedly installed through the bottom of the V-shaped partition, a solenoid valve is installed inside the discharge pipe, and a discharge pipe is fixedly installed through the bottom of the dust collection box, a second discharge pipe is installed inside the discharge pipe, a second solenoid valve is installed inside the discharge pipe.

[0011] As a further technical solution of the present invention, an air vent is provided on the inner wall of the dust collection box, a filter screen is fixed in the air vent, a second ventilation hose is connected to the air vent, a support frame is fixed on the inner wall of the dust collection box, a rotating column is rotatably provided on the side of the support frame near the air vent, a plurality of blades are fixedly connected on the outer wall of the rotating column, a first bristle layer is fixed on the side of each blade near the air vent, and a second bristle layer is fixed on the side of the rotating column near the air vent.

[0012] As a further technical solution of the present invention, an electric push rod is inclinedly provided on the lower end face of the upper top plate, and a connecting frame is fixed at the end of the telescopic end of the electric push rod, and the dust collection box is fixedly connected to the inner wall of the connecting frame.

[0013] The beneficial effects of this invention are:

[0014] 1. When the tunneling machine continues to drill, the two traveling frames move forward under the drive of the bottom track, following behind the tunneling machine. During this process, the middle track and side track also move under the drive of the top plate. The middle track and side track move against the top surface of the tunnel, providing continuous support to the tunnel. There is no need to repeatedly extend and retract the hydraulic rod, which improves the overall movement speed and has high safety.

[0015] 2. After the side brush rollers and the middle brush rollers come into contact with the inner top of the tunnel, each motor drives the corresponding side brush rollers and the middle brush rollers to rotate, cleaning part of the inner top of the tunnel. The positions corresponding to the middle brush rollers and the side brush rollers lay the groundwork for the subsequent construction of protective supports for the tunnel. After the middle brush rollers and the side brush rollers come into contact with the inner top of the tunnel, the middle brush rollers and the side brush rollers continue to rotate, cleaning up the small gravel that has not fallen off the inner top of the tunnel, making it easier for the operators to build the protective supports later.

[0016] 3. As the two traveling frames move forward, the air pump generates airflow at the air intake of the suction hood. Dust floating in the air is then carried into the dust collection box by the airflow, reducing the dust content in the tunnel. This prevents workers from inhaling the dust and affecting their health, and also prevents dust from being stirred up by subsequent vehicles in the tunnel, thus reducing visibility and affecting driving safety. When a certain amount of dust accumulates at the bottom of the dust collection box, the extension end of the electric actuator extends, pushing the connecting frame and the dust collection box diagonally downwards, closer to the crushed stone conveyor belt. When the dust collection box reaches the designated position, it is directly above the crushed stone conveyor belt. Then, the second solenoid valve opens, and the dust in the dust collection box falls onto the crushed stone conveyor belt under gravity. Because the dust collection box is close to the crushed stone conveyor belt, it does not cause much dust. After the dust has been emptied, the second solenoid valve closes, and the dust collection box returns to its initial position under the action of the electric actuator to continue dust collection operations. This system is convenient to use. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention;

[0018] Figure 2 Side view of the present invention Figure 1 ;

[0019] Figure 3 Side view of the present invention Figure 2 ;

[0020] Figure 4 This is a schematic diagram showing the connection between the walking frame and the hydraulic rod of the present invention;

[0021] Figure 5 This is a schematic diagram of the internal structure of the dust collection box of the present invention;

[0022] Figure 6 This is a schematic diagram showing the connection between the rotating column and the blade of the present invention;

[0023] Figure 7 This is a schematic diagram showing the connection between the electric actuator and the connecting frame of the present invention.

[0024] In the diagram: 1. Top plate; 2. Intermediate support seat; 3. Intermediate track; 4. Side support seat; 5. Side track; 6. Walking frame; 7. Bottom track; 8. Hydraulic rod; 9. Connecting plate; 10. Intermediate mounting seat; 11. Intermediate brush roller; 12. Side mounting seat; 13. Side brush roller; 14. Telescopic rod; 15. Suction hood; 16. Dust collection box; 17. Ventilation hose one; 18. V-shaped partition; 19. Discharge pipe one; 20. Discharge pipe two; 21. Filter screen; 22. Support frame; 23. Rotating column; 24. Blade; 25. Brush layer one; 26. Brush layer two; 27. Electric actuator; 28. Connecting frame. Detailed Implementation

[0025] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0026] Reference Figures 1-7 A temporary hydraulic support traveling device for advance support in tunnel excavation includes an upper roof plate 1. A central support seat 2 is fixed at the center of the upper end face of the upper roof plate 1. Central tracks 3 are rotatably mounted on both sides of the central support seat 2. Two side support seats 4 are symmetrically fixed at both sides of the upper end face of the upper roof plate 1. Both side support frames 22 are inclined. Side tracks 5 are rotatably mounted on both sides of each side support seat 4. Two traveling frames 6 are symmetrically mounted on the lower end face of the upper roof plate 1. The upper roof plate 1 is movably mounted on the upper end face of the two traveling frames 6. Bottom tracks 7 are rotatably mounted on both sides and near the lower end of each traveling frame 6. Each traveling frame 6 contains a drive box for driving the bottom tracks 7 to rotate. First, when this traveling device is used in conjunction with a tunneling machine, the two traveling frames 6 follow behind the tunneling machine. Then, the upper top plate 1 moves upward under the action of multiple hydraulic rods 8 until the upper surfaces of the middle track 3 and the side track 5 abut against the top of the tunnel, providing temporary support for the excavated tunnel. As the tunneling machine continues to drill, the two traveling frames 6 move forward under the drive of the bottom track 7, following behind the tunneling machine. During this process, the middle track 3 and the side track 5 also move under the drive of the upper top plate 1. The middle track 3 and the side track 5 move against the top surface of the tunnel, providing continuous support for the tunnel. There is no need to repeatedly extend and retract the hydraulic rods 8, which improves the overall moving speed and ensures high safety in use.

[0027] The top plate 1 is equipped with a cleaning mechanism 1 and a cleaning mechanism 2. Each traveling frame 6 has multiple mounting slots on its upper surface. A hydraulic rod 8 is fixed to the bottom of each mounting slot. The ends of the telescopic ends of adjacent hydraulic rods 8 are fixed with the same connecting plate 9. The upper surface of the connecting plate 9 is fixedly connected to the bottom of the top plate 1. When the telescopic ends of each hydraulic rod 8 extend, the top plate 1 can be pushed upward, thereby pushing the middle track 3 and the side track 5 upward to provide temporary support for the roadway. When the traveling device is used up, the telescopic ends of each hydraulic rod 8 shorten, thereby driving the top plate 1, the middle track 3 and the side track 5 back to their initial positions, facilitating the movement of the traveling device in the roadway and avoiding collisions with the already erected support structures.

[0028] The cleaning mechanism includes a central mounting seat 10 movably mounted on the upper surface of the top plate 1. A central brush roller 11 is rotatably mounted inside the central mounting seat 10. Two side mounting seats 12 are also symmetrically and movably mounted on the upper surface of the top plate 1. A side brush roller 13 is rotatably mounted inside each side mounting seat 12. Two telescopic rods 14 are symmetrically fixed between the central mounting seat 10 and the two side mounting seats 12 and the upper surface of the top plate 1. Two abutment springs are symmetrically fixed between the central mounting seat 10 and the two side mounting seats 12 and the upper surface of the top plate 1. The abutment springs are movably sleeved on the outer side wall of the telescopic rods 14.

[0029] As the top plate 1 moves the middle track 3 and side track 5 upwards towards the top surface of the tunnel, it also pushes the middle brush roller 11 and side brush roller 13 upwards until they also contact the inner top of the tunnel. Motors that drive the side brush roller 13 and the middle brush roller 11 to rotate are respectively fixed on the side walls of the side mounting base 12 and the middle mounting base 10. After the side brush roller 13 and the middle brush roller 11 contact the inner top of the tunnel... Each motor drives the corresponding side brush roller 13 and middle brush roller 11 to rotate, cleaning part of the inner top of the tunnel. The positions of the middle brush roller 11 and the side brush roller 13 are used to prepare for the subsequent construction of protective supports in the tunnel. After the middle brush roller 11 and the side brush roller 13 come into contact with the inner top of the tunnel, the middle brush roller 11 and the side brush roller 13 continue to rotate to clean up the small gravel that has not fallen off the inner top of the tunnel, making it easier for the operators to build the protective supports later.

[0030] Furthermore, the set anti-collision springs create a certain squeezing force between the middle brush roller 11 and the side brush roller 13 and the inner top of the tunnel, ensuring the cleaning effect.

[0031] The second cleaning mechanism includes suction hoods 15 fixed to the inner walls of the two traveling frames 6. A dust collection box 16 is installed on one side of the upper top plate 1. Each suction hood 15 and dust collection box 16 is connected by a ventilation hose 17. An air pump is fixed to the upper end face of the upper top plate 1. A second ventilation hose is connected to the air pump and dust collection box 16. The lengths of the first and second ventilation hoses are sufficient to spray water on the area to be excavated during the tunneling machine's operation. During continuous operation and during the transportation of crushed stone, water seepage occurs. Due to factors such as evaporation, dust will be present in the tunnel. To avoid harm to the health of workers, the two traveling frames 6 generate airflow at the air intake of the suction hood 15 by means of an air pump as they move the top plate 1 forward. The dust floating in the air then follows the airflow into the dust collection box 16, reducing the dust content in the tunnel. This prevents workers from inhaling the dust and affecting their health, and also prevents dust from being stirred up when vehicles move in the tunnel, thus reducing visibility and affecting driving safety.

[0032] The lower section of the dust collection box 16 is trapezoidal. A V-shaped partition 18 is fixed on the inner wall of the dust collection box 16. A discharge pipe 19 is fixedly installed through the bottom of the V-shaped partition 18. A solenoid valve 1 is installed inside the discharge pipe 19. A second discharge pipe 20 is fixedly installed through the bottom of the dust collection box 16. A second solenoid valve 2 is installed inside the discharge pipe 20. The air pump works intermittently. When dust enters the dust collection box 16 through the suction hood 15 and the ventilation hose 17, it will first stay between the V-shaped partition 18 and the inner wall of the dust collection box 16. When the air pump stops working, the solenoid valve 1 is opened. At this time, the dust will move downward under the action of gravity until it enters the bottom of the dust collection box 16 through the discharge pipe 19, so as to avoid the dust from being in constant contact with the filter screen 21 and affecting the ventilation of the filter screen 21.

[0033] A ventilation slot is provided on the inner wall of the dust collection box 16. A filter screen 21 is fixed inside the ventilation slot. The filter screen 21 can only intercept dust. A second ventilation hose is connected to the ventilation slot. A support frame 22 is fixed on the inner wall of the dust collection box 16. A rotating column 23 is rotatably installed on the side of the support frame 22 near the ventilation slot. Multiple blades 24 are fixedly connected to the outer wall of the rotating column 23. A first brush layer 25 is fixed on the side of each blade 24 near the ventilation slot. A second brush layer 26 is fixed on the side of the rotating column 23 near the ventilation slot. When dust enters the dust collection box 16 with the airflow... Airflow passes through filter 21 and is discharged from dust collection box 16. Dust is intercepted in dust collection box 16 by filter 21. When airflow passes through ventilation groove, it will drive each blade 24 and rotating column 23 to rotate. Since the first brush layer 25 on blade 24 and the second brush layer 26 on rotating column 23 are in contact with filter 21, the filter 21 is cleaned by the first brush layer 25 and rotating column 23 during the rotation process, so as to avoid too much dust adhering to the surface of filter 21 and affecting the ventilation of filter 21.

[0034] An electric actuator 27 is inclinedly installed on the lower end face of the top plate 1. A connecting frame 28 is fixed to the end of the telescopic end of the electric actuator 27. The dust collection box 16 is fixedly connected to the inner wall of the connecting frame 28. When a certain amount of dust accumulates at the bottom of the dust collection box 16, the telescopic end of the electric actuator 27 extends, thereby pushing the connecting frame 28 and the dust collection box 16 to move obliquely downwards, close to the crushed stone conveyor belt. When the dust collection box 16 reaches the designated position, it is located directly above the crushed stone conveyor belt. Then, the solenoid valve 2 opens, and the dust in the dust collection box 16 falls onto the crushed stone conveyor belt under the action of gravity. Since the dust collection box 16 is close to the crushed stone conveyor belt, it will not cause much dust. After the dust is emptied, the solenoid valve 2 closes, and the dust collection box 16 returns to the initial position under the action of the electric actuator 27 to continue the dust collection operation. It is convenient to use.

[0035] In use, the two traveling frames 6 follow behind the tunneling machine. Then, the top plate 1 moves upward under the action of multiple hydraulic rods 8 until the upper surfaces of the middle track 3 and the side track 5 come into contact with the top of the tunnel, providing temporary support for the excavated tunnel. As the tunneling machine continues to drill, the two traveling frames 6 move forward under the drive of the bottom track 7, following behind the tunneling machine. During this process, the middle track 3 and the side track 5 also move under the drive of the top plate 1. The middle track 3 and the side track 5 move against the top surface of the tunnel, providing continuous support for the tunnel. There is no need to repeatedly extend and retract the hydraulic rods 8, which improves the overall movement speed and ensures high safety in use.

[0036] After the side brush roller 13 and the middle brush roller 11 come into contact with the inner top of the tunnel, each motor drives the corresponding side brush roller 13 and the middle brush roller 11 to rotate, cleaning part of the inner top of the tunnel. The positions corresponding to the middle brush roller 11 and the side brush roller 13 lay the groundwork for the subsequent construction of protective supports for the tunnel. After the middle brush roller 11 and the side brush roller 13 come into contact with the inner top of the tunnel, the middle brush roller 11 and the side brush roller 13 continue to rotate, cleaning up the small gravel that has not fallen off the inner top of the tunnel, making it easier for subsequent operators to build protective supports.

[0037] As the two traveling frames 6 move the top plate 1 forward, the air pump generates airflow at the air intake of the suction hood 15. Then, the dust floating in the air follows the airflow into the dust collection box 16, reducing the dust content in the tunnel. This prevents workers from inhaling the dust and affecting their health, and also prevents dust from being stirred up when subsequent vehicles move in the tunnel, thus reducing visibility and affecting driving safety.

[0038] When a certain amount of dust accumulates at the bottom of the dust collection box 16, the telescopic end of the electric push rod 27 extends, thereby pushing the connecting frame 28 and the dust collection box 16 to move diagonally downwards, closer to the crushed stone conveyor belt. When the dust collection box 16 reaches the designated position, it is now directly above the crushed stone conveyor belt. Then, the solenoid valve 2 opens, and the dust inside the dust collection box 16 falls onto the crushed stone conveyor belt under the action of gravity. Since the dust collection box 16 is close to the crushed stone conveyor belt, it will not cause much dust. After the dust has been emptied, the solenoid valve 2 closes, and the dust collection box 16 returns to its initial position under the action of the electric push rod 27 to continue the dust collection operation, which is convenient to use.

[0039] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A temporary hydraulic support traveling device for advance support in tunnel excavation, comprising an upper roof plate (1), characterized in that, The upper end face of the top plate (1) is fixed with a middle support seat (2) at the center position. The middle support seat (2) is rotatably provided with a middle track (3) on both sides. The upper end face of the top plate (1) is symmetrically fixed with two side support seats (4) at both sides. The two side support frames (22) are inclined. The side track (5) is rotatably provided on both sides of each side support seat (4). The lower end face of the top plate (1) is symmetrically provided with two walking frames (6). The top plate (1) is movably provided on the upper end face of the two walking frames (6). The bottom track (7) is rotatably provided on both sides of each walking frame (6) at the lower end position. The top plate (1) is provided with a cleaning mechanism one and a cleaning mechanism two. The cleaning mechanism includes a middle mounting seat (10) movably mounted on the upper end face of the top plate (1), a middle brush roller (11) rotatably mounted inside the middle mounting seat (10), and two side mounting seats (12) symmetrically and movably mounted on the upper end face of the top plate (1), each side mounting seat (12) rotatably mounted inside. The second cleaning mechanism includes a suction hood (15) fixed on the inner wall of two walking frames (6), a dust collection box (16) is provided on one side of the top plate (1), and a ventilation hose (17) is provided between each suction hood (15) and the dust collection box (16). An air pump is fixed on the upper end face of the top plate (1), and a ventilation hose (2) is provided between the air pump and the dust collection box (16). The lower section of the dust collection box (16) is trapezoidal. A V-shaped partition (18) is fixed on the inner wall of the dust collection box (16). A discharge pipe (19) is fixedly installed through the bottom of the V-shaped partition (18). A solenoid valve is installed inside the discharge pipe (19). A discharge pipe (20) is fixedly installed through the bottom of the dust collection box (16). A solenoid valve is installed inside the discharge pipe (20).

2. The temporary hydraulic support traveling device for advance support in tunnel excavation according to claim 1, characterized in that, Each of the walking frames (6) has multiple mounting slots on its upper surface. A hydraulic rod (8) is fixed to the bottom of each mounting slot. The ends of the telescopic ends of adjacent hydraulic rods (8) are fixed with the same connecting plate (9). The upper surface of the connecting plate (9) is fixedly connected to the bottom of the upper top plate (1).

3. The temporary hydraulic support traveling device for advance support in tunnel excavation according to claim 1, characterized in that, Two telescopic rods (14) are symmetrically fixed between the middle mounting base (10) and the two side mounting bases (12) and the upper end face of the top plate (1). Two abutment springs are symmetrically fixed between the middle mounting base (10) and the two side mounting bases (12) and the upper end face of the top plate (1). The abutment springs are movably sleeved on the outer side wall of the telescopic rods (14).

4. The temporary hydraulic support traveling device for advance support in tunnel excavation according to claim 1, characterized in that, The dust collection box (16) has an air vent groove on its inner wall. A filter screen (21) is fixed in the air vent groove. The second ventilation hose is connected to the air vent groove. A support frame (22) is fixed on the inner wall of the dust collection box (16). A rotating column (23) is rotatably installed on the side of the support frame (22) near the air vent groove. Multiple blades (24) are fixedly connected on the outer wall of the rotating column (23). A brush layer (25) is fixed on the side of each blade (24) near the air vent groove. A brush layer (26) is fixed on the side of the rotating column (23) near the air vent groove.

5. The temporary hydraulic support traveling device for advance support in tunnel excavation according to claim 1, characterized in that, An electric push rod (27) is inclinedly provided on the lower end face of the upper top plate (1). A connecting frame (28) is fixed at the end of the telescopic end of the electric push rod (27). The dust collection box (16) is fixedly connected to the inner wall of the connecting frame (28).

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