CN219220436U

CN219220436U - Injection apparatus of tunnel lining support

Info

Publication number: CN219220436U
Application number: CN202223217288.7U
Authority: CN
Inventors: 章玉伟; 蔡元成; 杨如刚; 赖金星; 谢永利; 邱军领; 李吉刚; 闫钰丰; 杨桃; 冯志华
Original assignee: Shudao Investment Group Co ltd; Changan University
Current assignee: Shudao Investment Group Co ltd; Changan University
Priority date: 2022-11-30
Filing date: 2022-11-30
Publication date: 2023-06-20
Anticipated expiration: 2032-11-30

Abstract

The utility model discloses a tunnel lining supporting spraying device, which adopts a crawler-type moving device as a traveling device, and compared with the existing wheeled vehicle, the crawler-type moving device can adapt to various terrains in a tunnel, the problem that the vehicle is difficult to move due to the fact that the interior of the tunnel is muddy is avoided, the oil extraction oil cylinder and the horizontal turntable are combined to adjust the coupling adjustment of the horizontal and pitching angles of a spraying head assembly, so that the full-directional angle spraying can be achieved, the spraying lining coverage rate of a small-section tunnel can be greatly improved, the chassis is connected with the crawler-type moving device through a rotating device, the large-angle adjustment of the spraying angle is realized, finally, a cable reel is arranged on the chassis, a cable with a certain length is wound on the cable reel, the power provided by an electric facility in the tunnel for the spraying device is effectively utilized, and the spraying efficiency of the spraying device is improved.

Description

Injection apparatus of tunnel lining support

Technical Field

The utility model relates to the technical field of wet spraying machines, in particular to a spraying device for tunnel lining support.

Background

At present, when tunnel engineering construction is carried out in China, a wet spraying technology is often used for spraying tunnel lining, the principle of the technology utilizes compressed air or other power to convey mixed materials matched according to a certain proportion through a pipeline and spray the mixed materials on a sprayed surface at a high speed for condensation and hardening, so that a concrete supporting layer is formed, but most devices for spraying the tunnel lining comprise a moving vehicle and a spray head fixed on the moving vehicle, the spraying angle of the spray head is controlled by adjusting the direction of the moving vehicle, the moving vehicle is operated to adjust and control the spraying angle in a tunnel, the flexibility of the spraying angle is poor, dead angles exist in spraying, the spraying is inconvenient, the timely construction cannot be realized, and the working efficiency is greatly reduced. And most of the device spray heads are single, the coverage rate requirement of the small-section tunnel spray lining cannot be met, and great inconvenience is brought to constructors.

Disclosure of Invention

Aiming at the problems in the prior art, the utility model provides a spraying device for tunnel lining support, which improves the efficiency of tunnel spraying lining.

The utility model is realized by the following technical scheme:

the utility model provides a tunnel lining support's injection apparatus, includes injection apparatus, injection head subassembly, cantilever crane, horizontal carousel, running gear, chassis and rotary device;

the chassis is arranged at the top of the walking device through a rotating device, and the rotating device is used for driving the chassis to horizontally rotate around the whole circumference; the spraying device is arranged at the top of the chassis, the horizontal turntable is arranged on the chassis and positioned at one end of the spraying device, the lower end of the arm support is connected with the horizontal turntable, the spraying head assembly is arranged at the upper end of the arm support and connected with the spraying device, and the arm support and the horizontal turntable are used for adjusting the horizontal and pitching spraying angles of the spraying head assembly.

Preferably, the arm support comprises an oil cylinder, a fixed arm and a telescopic arm;

the vertical setting of fixed arm its lower extreme is connected with the horizontal carousel, and flexible arm sets up in the upper end of fixed arm, and the one end of flexible arm is articulated with the upper end of fixed arm, and the injection head subassembly is connected with the other end of flexible arm, and the cylinder body lower extreme of hydro-cylinder passes through the articulated elements and articulates with the lower extreme of fixed arm, and the piston rod of hydro-cylinder is connected with the middle part of flexible arm.

Preferably, the spray head assembly comprises three spray heads, the end part of the arm support is provided with a spray bracket, the fixed end of the spray heads is rotationally connected with the spray bracket through a rotating shaft, and the three spray heads are respectively connected with the outlet of the discharge pipeline of the spray device through branch pipelines.

Preferably, the horizontal turntable comprises a base, a rotating shaft and a steering arm;

the base is fixed on the chassis, the lower extreme rotation of pivot sets up in the base, and the axis of steering arm sets up perpendicularly with the axis of pivot, and the one end of steering arm is fixed connection with the upper end of pivot, and the lower extreme of fixed arm is fixed connection with the other end of steering arm, and the steering arm passes through gear train and drive arrangement.

Preferably, the gear set includes an input gear and an output gear;

the input gear is sleeved on the rotating shaft and positioned at the top of the base, the output gear is sleeved on the steering arm, the input gear and the output gear are meshed with each other, and the input gear and the output gear form a reduction gear set.

Preferably, the input gear and the output gear are bevel gear sets.

Preferably, the rotating device comprises a fixed column and a rotating gear sleeve;

the lower extreme of fixed column is fixed at running gear's fixed base top, and rotatory gear cover is established on the fixed column, chassis and rotatory gear cover rigid coupling and be located fixed base's top, rotatory gear cover and driving motor meshing, driving motor fixes on running gear's fixed base.

Preferably, the rotary gear sleeve comprises a sleeve and a gear fixedly sleeved at the lower end of the outer wall of the sleeve;

the gear is meshed with an output shaft of the driving motor, the sleeve is embedded in the center of the chassis and fixedly connected with the chassis, and the sleeve is sleeved on the fixed column and can rotate.

Preferably, the chassis is further provided with a cable reel on which a length of cable is wound, the cable being used to power the spraying device.

Preferably, the spraying device is a concrete sprayer.

Compared with the prior art, the utility model has the following beneficial technical effects:

the utility model provides a spraying device for tunnel lining support, which comprises a running gear, wherein the running gear is connected with a chassis through a rotating device, an arm support, a spraying device and a horizontal turntable are arranged on the chassis, the arm support can adjust the spraying pitch angle of a spraying head assembly, the horizontal turntable can adjust the spraying horizontal angle of the spraying head assembly, the spraying head assembly can spray in all-around angles through the coupling of the pitch angle and the horizontal angle, the coverage rate of the spraying lining of a tunnel with a medium and small section is greatly improved, the problem that the spraying angle and the spraying angle of the existing device are poor in flexibility degree is solved, and secondly, the rotating device drives the chassis to rotate in a large angle of 360 degrees, so that the rapid adjustment of the large angle is realized, the secondary spraying of the lining is facilitated, and the spraying efficiency of concrete slurry is greatly improved.

Furthermore, the coupling adjustment of the horizontal angle and the pitching angle of the spray head assembly is adjusted by combining the oil cylinder and the horizontal turntable, the structure is simple, the operation is stable, and the service life and the operation stability of the device are greatly improved.

Further, a cable reel is arranged on the chassis, a cable with a certain length is wound on the chassis, and after the device enters the tunnel, the cable is pulled out and is respectively connected with the spraying device and the power supply, so that power provided by an electric facility in the tunnel for the spraying device is effectively utilized, and the spraying efficiency of the spraying device is improved.

Furthermore, the crawler-type moving device is adopted as a walking device, so that the crawler-type moving device can adapt to various terrains in a tunnel compared with the existing wheeled vehicle, and the problem that the vehicle is difficult to move due to the fact that the inside of the tunnel is muddy is avoided.

Furthermore, by adopting a plurality of injection heads, the injection area is increased, the injection efficiency is improved, and simultaneously the injection heads can independently rotate, so that the injection angle is convenient to adjust.

Drawings

FIG. 1 is a schematic diagram of a tunnel liner support injection apparatus of the present utility model;

FIG. 2 is a front view of the boom of the present utility model;

FIG. 3 is a schematic view of the structure of the spray head assembly of the present utility model;

FIG. 4 is a schematic view of a horizontal rotation of a spray head according to the present utility model;

FIG. 5 is a detailed view of the spray device of the present utility model;

fig. 6 is a top view of the rotary device of the present utility model.

In the figure: 1. a cable reel; 2. a spraying device; 3. a spray head assembly; 4. arm support; 5. a horizontal turntable; 6. a walking device; 7. a chassis; 8. a rotating device; 9. an oil cylinder; 10. a fixed arm; 11. a telescoping arm; 12. an ejection head; 13. a discharge pipe; 17. fixing the column; 18. and rotating the gear sleeve.

Detailed Description

The utility model will now be described in further detail with reference to the accompanying drawings, which illustrate but do not limit the utility model.

Referring to fig. 1, a tunnel lining supporting spraying device comprises a cable reel 1, a spraying device 2, a spraying head assembly 3, a boom 4, a horizontal turntable 5, a traveling device 6, a chassis 7 and a rotating device 8.

The chassis 7 is arranged at the top of the traveling device 6 through the rotating device 8, the spraying device 2 is arranged at the top of the chassis 7, the cable reel 1 is arranged at one end of the spraying device 2, the horizontal turntable 5 is arranged at the other end of the spraying device 2, the lower end of the arm support 4 is connected with the horizontal turntable 5, and the spraying head assembly 3 is arranged at the upper end of the arm support and connected with the spraying device 2.

The cable reel 1 and the horizontal turntable 5 are respectively arranged at two ends of the chassis, the cable reel 1 is rotatably arranged in front of the spraying device 2 according to the advancing direction of the travelling device 6, a 100m cable is coiled on the cable reel, the cable reel can be connected with a tunnel power supply box at any time, the working efficiency is improved, the horizontal turntable 5 is arranged at the rear end of the spraying device 2, the lower end of the arm support 4 is connected with the horizontal turntable 5, and the rotation center of the cable reel 1 and the spraying device 2 are kept on the same horizontal line.

Referring to fig. 2, the boom 4 includes an oil cylinder 9, a fixed arm 10 and a telescopic arm 11, the fixed arm 10 is vertically disposed and has its lower end connected with the horizontal turntable 5, the telescopic arm is horizontally disposed at an upper end of the fixed arm, and a distal end of the telescopic arm 11 is hinged with an upper end of the fixed arm 10, a front end of the telescopic arm 11 extends toward a front end of the traveling device 6, the spray head assembly 3 is disposed at a front end of the telescopic arm 11, a lower end of a cylinder body of the oil cylinder 9 is hinged with a lower end of the fixed arm 10 through a hinge, and a piston rod of the oil cylinder 9 is connected with a middle portion of the telescopic arm 11. The telescopic boom 11 is a secondary telescopic cylinder, the spray head assembly 3 is arranged at the end part of a piston rod of the secondary telescopic cylinder, when the spray pitching angle of the spray head assembly 3 needs to be adjusted, the inclination angle of the telescopic boom 11 is controlled through the extension length controlled by the cylinder 9, the adjustment of the concrete spraying angle can be realized, the telescopic boom has two-stage telescopic performance, and the telescopic length needs to meet the requirement of the small-section tunnel construction depth of 2 m.

The horizontal turntable 5 comprises a base 55, a rotating shaft 52 and a steering arm 53, wherein the base 55 is fixed at the bottom of the tail end of the chassis 7, a ball bearing is embedded in the center of the base 55, the lower end of the rotating shaft 52 is sleeved in a shaft hole of the ball bearing, the axis of the steering arm 53 is perpendicular to the axis of the rotating shaft, one end of the steering arm 53 is fixedly connected with the upper end of the rotating shaft 52, the other end of the steering arm extends to the front end of the travelling device, the lower end of the fixed arm 10 is fixedly connected with the other end of the steering arm 53, and the steering arm horizontally rotates through a gear set and a driving device.

The gear set comprises an input gear 54 and an output gear 51, the input gear 54 is sleeved on a rotating shaft and is positioned at the top of the base, the output gear 51 is sleeved on the steering arm, the input gear 54 and the output gear 51 are meshed with each other, the driving device is a motor, the motor is fixed on the chassis, a driving gear is not shown in the figure, the driving gear is arranged on an output shaft of the motor and meshed with the input gear 54, when the steering is performed, the motor drives the gear to rotate, the driving gear drives the input gear 54 to rotate, and the input gear 54 drives the output gear 51 to rotate, so that the steering arm is rotated.

In the present embodiment, the diameter of the driving gear is smaller than that of the input gear 54, forming a reduction gear set, and also a reduction gear set is formed between the input gear 54 and the output gear 51, controlling the steering speed of the fixed arm 10 by two-stage reduction. The input gear 54 and the output gear 51 are bevel gears that mesh with each other, and the input gear 54 may be a face gear.

Referring to fig. 5, the spraying device 2 is a concrete sprayer, which utilizes compressed air to convey concrete materials mixed according to a certain grading and water cement ratio to a spraying head assembly through a conveying pipe, and sprays the concrete materials at a very high speed, so that a concrete supporting layer is formed on the surface of a tunnel, a motor of the concrete sprayer drives a speed reducer through a coupler, a conveying shaft of the speed reducer drives a rotor to rotate, a stirring device on a hopper is driven to rotate, the concrete mixture materials enter a rotating rotor material cavity through a hopper, the rotor rotates for 180 degrees, the compressed air is communicated with an air inlet of the material cavity, and the materials are conveyed into the spraying head assembly through a discharging rotating head and a discharging pipeline 13 to be sprayed under the action of compressed air.

Referring to fig. 1-4, the spray head assembly 3 comprises three spray heads 12, the end part of the arm support is provided with a spray bracket, the spray heads 12 are installed at the left end of the arm support through the spray bracket, the three spray heads are circumferentially distributed, the included angle between two adjacent spray heads is 90 degrees, the three spray heads are respectively connected with the outlet of the discharging pipeline through branch pipelines, the fixed ends of the spray heads are rotationally connected with the spray bracket through rotating shafts, so that all-dimensional angle spray can be achieved, and the coverage rate of spray lining of a tunnel with a medium or small section is greatly improved.

The walking device 6 is a crawler-type moving device, a crawler is wound on the driving wheel, the crawler is contacted with the ground, and the driving wheel is not contacted with the ground. When the motor drives the driving wheel to rotate, the driving wheel continuously rolls up the crawler belt from the rear through the meshing between the gear teeth on the driving wheel and the crawler belt chain under the action of the driving torque of the speed reducer. The ground engaging portion of the track applies a rearward force to the ground, which in turn applies a forward reaction force to the track, which is the driving force that urges the machine forward. When the driving force is enough to overcome the walking resistance, the thrust wheels roll forwards on the upper surface of the crawler belt, so that the machine runs forwards, and the front crawler belt and the rear crawler belt of the crawler belt travelling mechanism of the whole machine can independently turn, so that the turning radius of the crawler belt travelling mechanism is smaller, and the crawler belt is convenient to use in a tunnel.

Referring to fig. 6, the rotating device 8 includes a fixed column 17 and a rotating gear sleeve 18, a fixed base is formed at the top of the traveling device, the lower end of the fixed column 17 is fixed at the center of the fixed base of the traveling device, the rotating gear sleeve 18 is sleeved on the fixed column 17, the rotating gear sleeve 18 includes a sleeve and a gear fixedly sleeved at the lower end of the outer wall of the sleeve, the sleeve is embedded at the center of the chassis and fixedly connected, meanwhile, the chassis is positioned at the top of the fixed base, the gear is meshed with an output shaft of a driving motor, the driving motor is fixed on the fixed base of the traveling device, and the driving motor drives the chassis to rotate through the rotating gear sleeve, so that the upper spraying device forms 360-degree large-angle rotation, and dead-angle-free covering spraying is realized.

In this embodiment, the oil cylinder 9, the telescopic arm 11, the spraying device 2 and the running device are connected with a controller, the work of each component is controlled by the controller, the controller is connected with a terminal, and the working state of the spraying device for supporting the tunnel lining is realized by controlling the terminal.

The following describes in detail the method of using the spraying device for tunnel lining support provided by the utility model.

When the concrete spraying device is used, concrete is poured into the spraying device 2, the spraying device 2 sends the concrete into the spraying head assembly 3 through a conveying pipeline under the action of pressure, the spraying head assembly 3 sprays the concrete to the lining surface, a supporting layer is formed after solidification, a horizontal spraying angle is adjusted through the horizontal turntable 5 in the spraying process, the horizontal turntable 5 can drive the arm support to horizontally rotate, the horizontal rotation angle is-45-180 degrees, meanwhile, the spraying pitch angle is adjusted through controlling the extending length of a piston of the oil cylinder, the spraying range is effectively controlled through coupling of the horizontal angle and the pitching angle, the spraying of tunnel lining is realized, and in the spraying process, the spraying angle can be controlled through a control terminal, so that the accurate positioning spraying direction is realized; when the injection angle and depth are required to be adjusted, the pitching of the telescopic arm is controlled through the oil cylinder, the telescopic arm has two-stage telescopic action, and the telescopic length can meet the requirement of 2m of the small-section tunnel construction depth; when the concrete reaches the spray head assembly 3, the spray requirements can also be met by adjusting the rotation angle of the spray head. When secondary spraying is needed or concrete is supplemented to the missing area, the whole chassis can horizontally rotate 180 degrees through the rotating device, and then the secondary spraying can greatly improve the spraying efficiency, so that the coverage rate of the tunnel spraying lining is required.

Compared with the existing wheeled vehicle, the crawler-type moving device is adopted as a traveling device, the spraying device for tunnel lining support provided by the utility model can adapt to various terrains in a tunnel, the problem that the vehicle is difficult to move due to the fact that the interior of the tunnel is muddy is avoided, the oil cylinder and the horizontal turntable are combined to adjust the coupling adjustment of the horizontal angle and the pitching angle of the spraying head assembly, the spraying of the full-direction angle can be achieved, the coverage rate of the spraying lining of the tunnel with a medium section and a small section is greatly improved, the chassis is connected with the crawler-type moving device through the rotating device, the large-angle adjustment of the spraying angle is achieved, finally, a cable reel is arranged on the chassis, a cable with a certain length is wound on the cable reel, the power provided by electric facilities in the tunnel for the spraying device is effectively utilized, and the spraying efficiency of the spraying device is improved.

The above is only for illustrating the technical idea of the present utility model, and the protection scope of the present utility model is not limited by this, and any modification made on the basis of the technical scheme according to the technical idea of the present utility model falls within the protection scope of the claims of the present utility model.

Claims

1. The spraying device for the tunnel lining support is characterized by comprising a spraying device (2), a spraying head assembly (3), an arm support (4), a horizontal turntable (5), a traveling device (6), a chassis (7) and a rotating device (8);

the chassis (7) is arranged at the top of the walking device (6) through a rotating device (8), and the rotating device (8) is used for driving the chassis to horizontally rotate in a full circle; the spraying device (2) is arranged at the top of the chassis (7), the horizontal turntable (5) is arranged on the chassis and located at one end of the spraying device (2), the lower end of the arm support (4) is connected with the horizontal turntable (5), the spraying head assembly (3) is arranged at the upper end of the arm support and connected with the spraying device (2), and the arm support (4) and the horizontal turntable (5) are used for adjusting the horizontal and pitching spraying angles of the spraying head assembly (3).

2. The spraying device for tunnel lining support according to claim 1, characterized in that the boom (4) comprises an oil cylinder (9), a fixed arm (10) and a telescopic arm (11);

the vertical setting of fixed arm (10) its lower extreme is connected with horizontal carousel (5), and flexible arm sets up the upper end at the fixed arm, and the one end of flexible arm (11) is articulated with the upper end of fixed arm (10), and spray head subassembly (3) are connected with the other end of flexible arm (11), and the cylinder body lower extreme of hydro-cylinder (9) is articulated with the lower extreme of fixed arm (10) through the articulated elements, and the piston rod of hydro-cylinder (9) is connected with the middle part of flexible arm (11).

3. The spraying device for tunnel lining support according to claim 1, wherein the spraying head assembly (3) comprises three spraying heads (12), the end part of the arm support is provided with a spraying bracket, the fixed end of the spraying head is rotatably connected with the spraying bracket through a rotating shaft, and the three spraying heads are respectively connected with the outlet of a discharging pipeline of the spraying device through branch pipelines.

4. A tunnel lining support spraying device according to claim 1, characterised in that the horizontal turntable (5) comprises a base (55), a spindle (52) and a steering arm (53);

the base (55) is fixed on the chassis (7), the lower end of the rotating shaft (52) is rotatably arranged in the base (55), the axis of the steering arm (53) is perpendicular to the axis of the rotating shaft, one end of the steering arm (53) is fixedly connected with the upper end of the rotating shaft (52), the lower end of the fixed arm (10) is fixedly connected with the other end of the steering arm (53), and the steering arm is connected with the driving device through a gear set.

5. A tunnel lining support jet apparatus according to claim 4, wherein the gear set comprises an input gear (54) and an output gear (51) which are intermeshed;

the input gear (54) is sleeved on the rotating shaft and is positioned at the top of the base, the output gear (51) is sleeved on the steering arm, and the input gear (54) and the output gear (51) form a reduction gear set.

6. A tunnel lining support spraying device according to claim 5, characterised in that the input gear (54) and the output gear (51) are bevel gear sets.

7. A tunnel lining support spraying device according to claim 1, characterized in that the rotating device (8) comprises a fixed column (17) and a rotating gear sleeve (18);

the lower end of the fixed column (17) is fixed at the top of a fixed base of the running gear, the rotary gear sleeve (18) is sleeved on the fixed column (17), the chassis is fixedly connected with the rotary gear sleeve (18) and is positioned at the top of the fixed base, the rotary gear sleeve (18) is meshed with the driving motor, and the driving motor is fixed on the fixed base of the running gear.

8. A tunnel lining support spraying device according to claim 7, characterized in that the rotating gear sleeve (18) comprises a sleeve and a gear fixedly sleeved at the lower end of its outer wall;

the gear is meshed with an output shaft of the driving motor, the sleeve is embedded in the center of the chassis and fixedly connected with the chassis, and the sleeve is sleeved on the fixed column (17) and can rotate.

9. A spraying device for tunnel lining support according to claim 1, characterized in that the chassis is further provided with a cable reel (1) on which a length of cable is wound, the cable being used for powering the spraying device.

10. A spraying device for tunnel lining support according to claim 1, characterized in that the spraying device (2) is a concrete sprayer.