Improved device for cleaning tunnel bedrock surface

Abstract

The utility model discloses an improved device for cleaning a tunnel bedrock surface, and belongs to the technical field of tunnel construction. A water inlet connector section and an air inlet connector section are arranged at the tail end, and a long pipe with a flat nozzle is assembled at the head end; the flat nozzle is composed of an internal thread pipe section at the rear end, a deformation transition pipe section in the middle and a flat outlet section at the front end. The opening of the flat outlet section is strip-shaped; and a flow guide inclined plate is arranged in an opening of the flat outlet section. According to the utility model, efficient cleaning of the excavated bedrock surface is realized, and the quality and efficiency of cleaning the bedrock surface in tunnel engineering are improved; an auxiliary device is arranged to facilitate personnel operation and improve the comfort level; the air supply pipeline is swung to different positions through the rotatable connecting structure, so that adverse effects on operators are reduced as much as possible; the handle is arranged, so that use is more flexible and comfortable.

Description

Technical Field

[0001] This utility model relates to the field of tunnel construction technology, and in particular to an improved device for cleaning the bedrock surface of tunnels. Background Technology

[0002] Currently, in engineering construction, the cleaning of bedrock surfaces after excavation typically involves manual sweeping, shoveling, and water pipe cleaning. However, ordinary water pipes have low pressure and low cleaning efficiency, leaving many stubborn deposits on the bedrock surface. Manual cleaning not only consumes a lot of manpower and time but may also affect the quality of subsequent projects due to incomplete cleaning. For example, in concrete pouring projects, inadequate bedrock surface cleaning can lead to weak bonding between the concrete and the bedrock, reducing structural stability. Therefore, to improve the efficiency and quality of bedrock surface cleaning, the applicant has developed a new type of bedrock surface cleaning device based on work experience and practical needs. Utility Model Content

[0003] The purpose of this invention is to propose an improved device for cleaning the bedrock surface of tunnels.

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

[0005] An improved device for cleaning bedrock surfaces in tunnels includes: a long pipe with a water inlet section and an air inlet section at its tail end, and a flat nozzle at its head end.

[0006] The flat nozzle consists of: a rear internally threaded tube section, a middle deformable transition tube section, and a front flat outlet section; the opening of the flat outlet section is elongated.

[0007] A guide vane is installed inside the opening of the flat outlet section.

[0008] In some embodiments, the water inlet section, the air inlet section, and the long pipe cooperate to form a Y-shaped structure.

[0009] In some embodiments, the air intake section is equipped with a swingable connecting elbow.

[0010] In some embodiments, valves are respectively provided on the water inlet section and the air inlet section.

[0011] In some embodiments, a handle is provided at the tail end of the long tube.

[0012] In some embodiments, the handle includes: a handle base consisting of a collar and a stand, and a handle bar mounted on the handle base;

[0013] The angle of the handle is adjustable.

[0014] In some embodiments, the front opening of the handle clamps the upright plate and a locking screw is inserted through it;

[0015] One side of the handle has a multi-faceted groove for inserting a mounting nut.

[0016] In some embodiments, an auxiliary strap seat is provided on the long tube;

[0017] The auxiliary strap seat includes: a sliding seat fitted on a long tube, and a tear-off strap threaded through the sliding seat.

[0018] In some embodiments, the sliding seat includes: a sleeve and a triangular shell integrally connected to the lower end of the sleeve, the triangular shell having openings on both sides for tear-off straps to pass through;

[0019] A rubber pad is provided at the lower end of the triangular shell.

[0020] In some embodiments, two auxiliary straps are provided; the arm is secured to the body via the two auxiliary straps.

[0021] Compared with the prior art, the present invention provides an improved device for cleaning the bedrock surface of tunnels, which has the following beneficial effects.

[0022] 1. This utility model enables efficient cleaning of the bedrock surface after excavation, improving the quality and efficiency of bedrock surface cleaning in tunnel engineering; the auxiliary device facilitates personnel operation and improves comfort.

[0023] This utility model features a rotatable connection structure that allows the air supply pipeline to swing to different positions, minimizing adverse effects on operators; it also includes a handle for more flexible and comfortable use; and the handle angle is adjustable to better suit different users and usage scenarios.

[0024] Other advantages, objectives and features of this invention will be set forth in part in the description which follows; and in part will be apparent to those skilled in the art upon examination of the following description; or may be taught from practice of this invention. Attached Figure Description

[0025] Figure 1 This is a view of the tail end of the present invention.

[0026] Figure 2 This is a side view of the present invention.

[0027] Figure 3 This is a front-end view of the present invention.

[0028] Figure 4 This is an inside view of the device using two auxiliary straps.

[0029] Figure 5 An outside view of the use of two auxiliary strap seats.

[0030] Figure 6 This is a schematic diagram of the handle's structure.

[0031] Figure 7 This is a schematic diagram of the handle in an explosion state.

[0032] Figure 8 This is a structural diagram of the auxiliary strap seat.

[0033] Figure 9 This is a schematic diagram of the sliding seat.

[0034] Figure 10 This is a schematic diagram of a flat nozzle.

[0035] Figure 11 This is a cross-sectional view of a flat nozzle.

[0036] Figure 12 This is a schematic diagram of the structure of this utility model.

[0037] In the picture:

[0038] 1. Water inlet section; 2. Air inlet section; 21. Connecting elbow; 3. Flat nozzle; 31. Internally threaded pipe section; 32. Deformed transition pipe section; 33. Flat outlet section; 34. Flow guide plate; 4. Long pipe; 5. Handle; 51. Collar; 52. Vertical plate; 53. Handle bar; 6. Auxiliary strap seat; 61. Sliding seat; 62. Tear-off strap; 63. Rubber pad. Detailed Implementation

[0039] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0040] Reference Figure 1-12 An improved device for cleaning bedrock surfaces in tunnels includes: a long pipe 4 with a water inlet section 1 and an air inlet section 2 at the tail end, and a flat nozzle 3 at the head end.

[0041] Among them, the water inlet section 1, the air inlet section 2, and the long pipe 4 are all made of steel pipes. Under normal circumstances, the long pipe 4, which is more suitable for operation, is set to a size of about 1 meter. Personnel can hold the long pipe 4 to spray water to clean the ground and walls. At the same time, it outputs high-speed water flow under air pressure to provide stronger impact force. In addition, it works with the flat nozzle 3 to make the water flow fan-shaped, increasing the coverage area per shot and improving work efficiency.

[0042] In some embodiments, the flat nozzle 3 consists of: a rear internally threaded tube section 31, a middle deformable transition tube section 32, and a front flat outlet section 33.

[0043] like Figure 1-5 As shown; the flat nozzle 3 can be detachably installed at the front end of the long pipe 4; it can be replaced when facing different working environments; for example, adjusting the spray coverage area and the size and width of the outlet, etc.

[0044] like Figure 10-12 As shown; the internally threaded pipe section 31 is assembled with the front end of the long pipe 4; the deformed transition pipe section 32 gradually deforms to a flat shape and then connects to the flat outlet section 33; it can be understood that the internally threaded pipe section 31, the deformed transition pipe section 32, and the flat outlet section 33 are an integral structure; the opening of the flat outlet section 33 is long and narrow, forming a flat and outward-expanding water flow pattern.

[0045] Furthermore, a guide vane 34 is provided inside the opening of the flat outlet section 33.

[0046] like Figure 10-12 As shown, the outlet water flow is guided, adjusted, and the coverage area is expanded; at the same time, the outlet area is reduced, which can further increase the water pressure impact force.

[0047] In some embodiments, the water inlet section 1, the air inlet section 2, and the long pipe 4 cooperate to form a Y-shaped structure to facilitate the connection of the two pipes.

[0048] like Figure 1 As shown, the water inlet section 1 is coaxially arranged with the long pipe 4, and the air inlet section 2 is connected to the long pipe 4 from the rear. In use, high-pressure gas is introduced through the air inlet section 2 to increase the impact force of the water.

[0049] Under normal circumstances, during use, the air intake section 2 is swung downwards.

[0050] Furthermore, the air intake section 2 is equipped with a swingable connecting elbow 21.

[0051] It is understandable that during use, the constant movement of personnel may cause some adverse effects such as dragging or obstruction of the pipeline. By setting up a rotatable connection structure, the air supply pipeline can be swung to different positions, minimizing the adverse effects on the operator and making it more convenient to use.

[0052] In some embodiments, valves are respectively provided on the water inlet section 1 and the air inlet section 2; the opening and closing degree can be adjusted at any time during use to control the input of water pressure and airflow.

[0053] In some embodiments, a handle 5 is provided at the tail end of the long tube 4.

[0054] like Figure 1 As shown, it is generally necessary to hold it with both hands during use; one hand holds the front end of the Y-shaped structure, and the other hand holds it near the tail end; under normal circumstances, you can directly hold the water inlet section 1. However, due to the influence of the connecting pipes and different people's operating habits, this holding method is not suitable; therefore, a handle was added; the other hand holds the handle 5, making it more flexible and comfortable to use.

[0055] Furthermore, the angle of handle 5 can be adjusted to better suit different users and usage scenarios.

[0056] Specifically, the handle 5 includes: a handle base consisting of a collar 51 and a stand 52, and a handle bar 53 mounted on the handle base.

[0057] Among them, the collar 51 is fitted onto the long pipe 4 or the water inlet section 1 and can rotate, and its position is locked by tightening bolts; the upright plate 52 extends outward to form a connecting base; the handle 53 is assembled on the upright plate 52, and the angle of the handle 53 can be adjusted.

[0058] Correspondingly, the front opening of the handle 53 clamps the upright plate 52 and is fitted with a locking screw; by locking or loosening, the angle of the handle 53 can be adjusted.

[0059] Preferably, a multi-faceted groove is provided on one side of the handle 53 to accommodate the mounting nut.

[0060] In some embodiments, an auxiliary strap seat 6 is provided on the long tube 4.

[0061] As mentioned earlier, one hand needs to be forward to hold the long tube 4; with an auxiliary strap seat 6, the grip is more comfortable; at the same time, it can also be strapped to the hand or arm to reduce the burden on one hand.

[0062] Preferably, the auxiliary strap seat 6 includes: a sliding seat 61 fitted on the long tube 4, and a tear-off strap 62 threaded on the sliding seat 61; the two ends of the tear-off strap 62 are in the form of Velcro.

[0063] The sliding seat 61 includes a sleeve and a triangular shell integrally connected to the lower end of the sleeve. The triangular shell has openings on both sides for the tear-off strap 62 to pass through. The sleeve and the long tube 4 cooperate to slide and rotate, and the position is locked by the tightening bolt. The operator can adjust the position arbitrarily.

[0064] Furthermore, a rubber pad 63 is provided at the lower end of the triangular shell to reduce hard contact with the human body when it is tied up, making it more comfortable.

[0065] It should be noted that, as Figure 1-3 As shown, the tear strap 62 opening faces upwards; it does not necessarily need to be tied, and it is also acceptable for people to hold it in their hands.

[0066] In some embodiments, two auxiliary strap seats 6 are provided; the auxiliary strap seats 6 are used to secure the arm to the human body.

[0067] In this implementation, the device is strapped to the human body through two fixed points, allowing for single-arm operation of the lever while the other hand assists in adjusting the pipeline, making operation more labor-saving and convenient.

[0068] This device mainly consists of connecting steel pipes (long pipe 4, water inlet section 1, air inlet section 2), nozzles (flat nozzles 3), and rubber hoses (air delivery and water delivery pipelines).

[0069] The connecting steel pipe is made of galvanized steel, which has good strength and corrosion resistance, and can adapt to the relatively humid and complex environment inside the tunnel. The nozzle is installed at the front end of the connecting steel pipe to spray the air-water mixture onto the bedrock surface. Considering cost and equipment versatility, the power source is the air-water pipeline laid out in the tunnel, connected via a rubber hose.

[0070] The connecting steel pipe is a Y-shaped pipe, the diameter of which is selected according to the interface size of the ventilation and water pipelines in the tunnel and the actual cleaning requirements, generally using DN20 steel pipe. The length of the steel pipe can be determined according to the location of the bedrock surface in the tunnel and the convenience of operation for the operators, generally 1.0m. One end of the steel pipe is used to connect to the ventilation and water pipelines in the tunnel, and the other end is used to install the sprinkler head.

[0071] The nozzle is flat, and the width of the flat nozzle is determined by the cleaning requirements of the bedrock surface. It can be specially designed or simply made by flattening a DN20 steel pipe, depending on the actual situation. The flat nozzle design increases the effective area of ​​the air and water flow, allowing the cleaning medium to act more evenly on the bedrock surface and improving the cleaning effect.

[0072] The steel pipe is connected to the ventilation and water supply lines inside the tunnel via a rubber hose. A threaded cap connects the top of the steel pipe to the rubber hose, and valves are installed at the ventilation and water supply line interfaces. The steel pipe is Y-shaped, with its top ends connecting to the ventilation and water pipes inside the tunnel, respectively. The ventilation and water supply is opened or closed by rotating the valves. Rubber sealing gaskets are installed at all connections to ensure no leakage of ventilation or water.

[0073] Water is forced into the pipe through the inlet, while airflow from the duct propels the water forward. When the water and air reach the nozzle, they mix and are sprayed out at a specific pressure and angle, thus cleaning the bedrock surface. By controlling valves installed on the water and air lines, the mixing ratio and spray intensity can be adjusted to suit different cleaning needs. For example, for looser debris, the water flow can be reduced and the airflow increased; for stubborn stains, both the water flow and airflow increased.

[0074] This device utilizes existing ventilation and water pipelines within the tunnel as a power source. The combined air and water jet cleaning method can quickly and effectively remove various debris from the bedrock surface, significantly improving cleaning efficiency compared to traditional manual methods. Furthermore, by adjusting the ventilation and water pressure and flow rate, it can precisely clean different types of dirt, resulting in a marked improvement in cleaning effectiveness.

[0075] A pumped storage power station in Huixian County, Henan Province, is equipped with six vertical shaft single-stage mixed-flow reversible pump-turbines with a single unit capacity of 350MW, for a total installed capacity of 2100MW and a rated head of 682m. The project is a large-scale (1) first-class project, with the main permanent buildings designed as Class 1 buildings and the secondary permanent buildings designed as Class 3 buildings. The power station mainly consists of an upper reservoir, a lower reservoir, a water diversion system, an underground powerhouse, a ground switch station, and a water replenishment project. After the excavation of the lower reservoir diversion tunnel and the access tunnel to the power plant, the bedrock surface of the tunnel had a large amount of gravel, dust, and some soil and other debris adhering to the bedrock surface. The construction workers used a bedrock surface cleaning device based on the tunnel ventilation and water pipeline to carry out the cleaning operation. The device showed good cleaning effect and ease of operation in this construction, improved the construction quality, and has great application prospects.

[0076] This utility model provides a bedrock surface cleaning device that improves cleaning efficiency by incorporating air power into pressurized water. Utilizing a steel pipe connection structure, it achieves highly efficient cleaning of excavated bedrock surfaces, addressing the problems of low efficiency, poor effectiveness, and poor equipment adaptability in existing cleaning methods, thereby improving the quality and efficiency of bedrock surface cleaning in tunnel engineering. Simultaneously, auxiliary devices are included to facilitate operation and improve comfort. A rotatable connection structure allows the air supply pipeline to be swung to different positions, minimizing adverse effects on operators. A handle 5 is provided for more flexible and comfortable use; the angle of the handle 5 is adjustable to better suit different users and usage scenarios; and an auxiliary strap seat 6 is included to reduce the burden on one hand.

[0077] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0078] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An improved device for cleaning the bedrock face of a tunnel, characterized in that, include: The tail end is provided with a water inlet section (1) and an air inlet section (2), and the head end is equipped with a long pipe (4) with a flat nozzle (3). The flat nozzle (3) consists of: a rear internal threaded pipe section (31), a middle deformable transition pipe section (32), and a front flat outlet section (33); the opening of the flat outlet section (33) is elongated. A guide plate (34) is provided inside the opening of the flat outlet section (33).

2. The improvement in tunnel bedrock face cleaning of claim 1 wherein, The water inlet section (1), the air inlet section (2), and the long pipe (4) work together to form a Y-shaped structure.

3. The improved device for cleaning the bedrock surface of tunnels according to claim 1, characterized in that, The air intake section (2) is equipped with a swingable connecting elbow (21).

4. The improved device for cleaning the bedrock surface of tunnels according to claim 1, characterized in that, Valves are respectively installed on the water inlet section (1) and the air inlet section (2).

5. The improved device for cleaning the bedrock surface of tunnels according to claim 1, characterized in that, The long tube (4) is provided with a handle (5) at its tail end.

6. The improved device for cleaning the bedrock surface of tunnels according to claim 5, characterized in that, The handle (5) includes: a handle base consisting of a collar (51) and a stand (52), and a handle bar (53) mounted on the handle base. The angle of the lever (53) can be adjusted.

7. The improved device for cleaning the bedrock surface of tunnels according to claim 6, characterized in that, The front end opening of the handle (53) clamps the upright plate (52) and a locking screw is inserted through it; A multi-faceted groove is provided on one side of the handle (53) to accommodate a mounting nut.

8. The improved device for cleaning the bedrock surface of tunnels according to claim 1, characterized in that, An auxiliary strap seat (6) is provided on the long tube (4). The auxiliary strap seat (6) includes: a sliding seat (61) fitted on the long tube (4), and a tear-off strap (62) threaded on the sliding seat (61).

9. The improved device for cleaning the bedrock surface of tunnels according to claim 8, characterized in that, The sliding seat (61) includes: a sleeve and a triangular shell integrally connected to the lower end of the sleeve, with openings on both sides of the triangular shell for the tear-off strap (62) to pass through; A rubber pad (63) is provided at the lower end of the triangular shell.

10. The improved apparatus for cleaning the bedrock surface of tunnels according to claim 8, characterized in that, Two auxiliary straps (6) are provided; the straps are fixed to the human arm by means of the two auxiliary straps (6).

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